From a5acd559d67b36fd5f086fc870c1b25dec6e1ade Mon Sep 17 00:00:00 2001 From: meleu Date: Sat, 16 Mar 2019 22:13:57 -0300 Subject: [PATCH 1/9] namespace both cheevos implementations & add a runtime setting to allow debugging --- Makefile.common | 126 +++++++++++++++----------------- cheevos-new/cheevos.c | 118 +++++++++++++++--------------- cheevos-new/cheevos.h | 44 +++++------ cheevos-new/fixup.c | 12 +-- cheevos-new/fixup.h | 8 +- cheevos-new/util.h | 4 +- cheevos/cheevos.h | 2 +- command.c | 114 ++++++++++++++++++----------- configuration.c | 2 + configuration.h | 1 + discord/discord.c | 1 + dynamic.c | 4 +- griffin/griffin.c | 15 ---- managers/cheat_manager.c | 6 +- menu/cbs/menu_cbs_ok.c | 1 + menu/cbs/menu_cbs_sublabel.c | 5 +- menu/menu_displaylist.c | 18 +++-- menu/menu_setting.c | 4 +- menu/widgets/menu_dialog.c | 13 +++- network/httpserver/httpserver.c | 1 + retroarch.c | 22 +++--- tasks/task_content.c | 7 +- 22 files changed, 286 insertions(+), 242 deletions(-) diff --git a/Makefile.common b/Makefile.common index 88e4439225..0b487d01b0 100644 --- a/Makefile.common +++ b/Makefile.common @@ -1688,76 +1688,70 @@ ifeq ($(HAVE_NETWORKING), 1) # RetroAchievements ifeq ($(HAVE_CHEEVOS), 1) - DEFINES += -DHAVE_CHEEVOS + DEFINES += -DHAVE_CHEEVOS \ + -Ideps/rcheevos/include - ifeq ($(HAVE_NEW_CHEEVOS), 1) - DEFINES += -DHAVE_NEW_CHEEVOS \ - -Ideps/rcheevos/include - OBJ += cheevos-new/cheevos.o \ - cheevos-new/badges.o \ - cheevos-new/fixup.o \ - cheevos-new/parser.o \ - cheevos-new/hash.o \ - deps/rcheevos/src/rcheevos/trigger.o \ - deps/rcheevos/src/rcheevos/condset.o \ - deps/rcheevos/src/rcheevos/condition.o \ - deps/rcheevos/src/rcheevos/operand.o \ - deps/rcheevos/src/rcheevos/term.o \ - deps/rcheevos/src/rcheevos/expression.o \ - deps/rcheevos/src/rcheevos/value.o \ - deps/rcheevos/src/rcheevos/lboard.o \ - deps/rcheevos/src/rcheevos/alloc.o \ - deps/rcheevos/src/rcheevos/format.o \ - deps/rcheevos/src/rurl/url.o + OBJ += cheevos/cheevos.o \ + cheevos/badges.o \ + cheevos/var.o \ + cheevos/cond.o \ + cheevos-new/cheevos.o \ + cheevos-new/fixup.o \ + cheevos-new/parser.o \ + cheevos-new/hash.o \ + deps/rcheevos/src/rcheevos/trigger.o \ + deps/rcheevos/src/rcheevos/condset.o \ + deps/rcheevos/src/rcheevos/condition.o \ + deps/rcheevos/src/rcheevos/operand.o \ + deps/rcheevos/src/rcheevos/term.o \ + deps/rcheevos/src/rcheevos/expression.o \ + deps/rcheevos/src/rcheevos/value.o \ + deps/rcheevos/src/rcheevos/lboard.o \ + deps/rcheevos/src/rcheevos/alloc.o \ + deps/rcheevos/src/rcheevos/format.o \ + deps/rcheevos/src/rurl/url.o - ifeq ($(HAVE_LUA), 1) - DEFINES += -DHAVE_LUA \ - -DLUA_32BITS \ - -Ideps/lua/src - OBJ += deps/lua/src/lapi.o \ - deps/lua/src/lcode.o \ - deps/lua/src/lctype.o \ - deps/lua/src/ldebug.o \ - deps/lua/src/ldo.o \ - deps/lua/src/ldump.o \ - deps/lua/src/lfunc.o \ - deps/lua/src/lgc.o \ - deps/lua/src/llex.o \ - deps/lua/src/lmem.o \ - deps/lua/src/lobject.o \ - deps/lua/src/lopcodes.o \ - deps/lua/src/lparser.o \ - deps/lua/src/lstate.o \ - deps/lua/src/lstring.o \ - deps/lua/src/ltable.o \ - deps/lua/src/ltm.o \ - deps/lua/src/lundump.o \ - deps/lua/src/lvm.o \ - deps/lua/src/lzio.o \ - deps/lua/src/lauxlib.o \ - deps/lua/src/lbaselib.o \ - deps/lua/src/lbitlib.o \ - deps/lua/src/lcorolib.o \ - deps/lua/src/ldblib.o \ - deps/lua/src/liolib.o \ - deps/lua/src/lmathlib.o \ - deps/lua/src/loslib.o \ - deps/lua/src/lstrlib.o \ - deps/lua/src/ltablib.o \ - deps/lua/src/lutf8lib.o \ - deps/lua/src/loadlib.o \ - deps/lua/src/linit.o - else - DEFINES += -DRC_DISABLE_LUA - endif - - # if not HAVE_NEW_CHEEVOS + ifeq ($(HAVE_LUA), 1) + DEFINES += -DHAVE_LUA \ + -DLUA_32BITS \ + -Ideps/lua/src + OBJ += deps/lua/src/lapi.o \ + deps/lua/src/lcode.o \ + deps/lua/src/lctype.o \ + deps/lua/src/ldebug.o \ + deps/lua/src/ldo.o \ + deps/lua/src/ldump.o \ + deps/lua/src/lfunc.o \ + deps/lua/src/lgc.o \ + deps/lua/src/llex.o \ + deps/lua/src/lmem.o \ + deps/lua/src/lobject.o \ + deps/lua/src/lopcodes.o \ + deps/lua/src/lparser.o \ + deps/lua/src/lstate.o \ + deps/lua/src/lstring.o \ + deps/lua/src/ltable.o \ + deps/lua/src/ltm.o \ + deps/lua/src/lundump.o \ + deps/lua/src/lvm.o \ + deps/lua/src/lzio.o \ + deps/lua/src/lauxlib.o \ + deps/lua/src/lbaselib.o \ + deps/lua/src/lbitlib.o \ + deps/lua/src/lcorolib.o \ + deps/lua/src/ldblib.o \ + deps/lua/src/liolib.o \ + deps/lua/src/lmathlib.o \ + deps/lua/src/loslib.o \ + deps/lua/src/lstrlib.o \ + deps/lua/src/ltablib.o \ + deps/lua/src/lutf8lib.o \ + deps/lua/src/loadlib.o \ + deps/lua/src/linit.o else - OBJ += cheevos/cheevos.o \ - cheevos/badges.o \ - cheevos/var.o \ - cheevos/cond.o + DEFINES += -DRC_DISABLE_LUA endif + endif ifeq ($(HAVE_DISCORD), 1) diff --git a/cheevos-new/cheevos.c b/cheevos-new/cheevos.c index 435a154f08..c37a9e68f6 100644 --- a/cheevos-new/cheevos.c +++ b/cheevos-new/cheevos.c @@ -41,7 +41,7 @@ #include #endif -#include "badges.h" +#include "../cheevos/badges.h" /* RCHEEVOS TODO: fix path */ #include "cheevos.h" #include "fixup.h" #include "parser.h" @@ -159,12 +159,12 @@ static cheevos_locals_t cheevos_locals = {0}, /* token */ }; -bool cheevos_loaded = false; -bool cheevos_hardcore_active = false; -bool cheevos_hardcore_paused = false; -bool cheevos_state_loaded_flag = false; -int cheats_are_enabled = 0; -int cheats_were_enabled = 0; +bool rcheevos_loaded = false; +bool rcheevos_hardcore_active = false; +bool rcheevos_hardcore_paused = false; +bool rcheevos_state_loaded_flag = false; +int rcheevos_cheats_are_enabled = 0; +int rcheevos_cheats_were_enabled = 0; #ifdef HAVE_THREADS #define CHEEVOS_LOCK(l) do { slock_lock(l); } while (0) @@ -288,7 +288,7 @@ static int cheevos_parse(const char* json) cheevos_lboard_t* lboard = NULL; cheevos_racheevo_t* rac = NULL; - cheevos_fixup_init(&cheevos_locals.fixups); + rcheevos_fixup_init(&cheevos_locals.fixups); res = cheevos_get_patchdata(json, &cheevos_locals.patchdata); @@ -364,7 +364,7 @@ static int cheevos_parse(const char* json) } rc_parse_trigger(cheevo->trigger, cheevo->info->memaddr, NULL, 0); - cheevo->active = CHEEVOS_ACTIVE_SOFTCORE | CHEEVOS_ACTIVE_HARDCORE; + cheevo->active = RCHEEVOS_ACTIVE_SOFTCORE | RCHEEVOS_ACTIVE_HARDCORE; cheevo->last = 1; } } @@ -406,7 +406,7 @@ error: CHEEVOS_FREE(cheevos_locals.unofficial); CHEEVOS_FREE(cheevos_locals.lboards); cheevos_free_patchdata(&cheevos_locals.patchdata); - cheevos_fixup_destroy(&cheevos_locals.fixups); + rcheevos_fixup_destroy(&cheevos_locals.fixups); return -1; } @@ -488,8 +488,8 @@ static void cheevos_award(cheevos_cheevo_t* cheevo, int mode) /* Deactivates the cheevo. */ cheevo->active &= ~mode; - if (mode == CHEEVOS_ACTIVE_HARDCORE) - cheevo->active &= ~CHEEVOS_ACTIVE_SOFTCORE; + if (mode == RCHEEVOS_ACTIVE_HARDCORE) + cheevo->active &= ~RCHEEVOS_ACTIVE_SOFTCORE; /* Show the OSD message. */ snprintf(buffer, sizeof(buffer), "Achievement Unlocked: %s", cheevo->info->title); @@ -497,7 +497,7 @@ static void cheevos_award(cheevos_cheevo_t* cheevo, int mode) runloop_msg_queue_push(cheevo->info->description, 0, 3 * 60, false, NULL, MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO); /* Start the award task. */ - if ((mode & CHEEVOS_ACTIVE_HARDCORE) != 0) + if ((mode & RCHEEVOS_ACTIVE_HARDCORE) != 0) cheevos_award_task_hardcore(NULL, NULL, cheevo, ""); else cheevos_award_task_softcore(NULL, NULL, cheevo, ""); @@ -523,7 +523,7 @@ static void cheevos_award(cheevos_cheevo_t* cheevo, int mode) static unsigned cheevos_peek(unsigned address, unsigned num_bytes, void* ud) { - const uint8_t* data = cheevos_fixup_find(&cheevos_locals.fixups, + const uint8_t* data = rcheevos_fixup_find(&cheevos_locals.fixups, address, cheevos_locals.patchdata.console_id); unsigned value = 0; @@ -540,12 +540,12 @@ static unsigned cheevos_peek(unsigned address, unsigned num_bytes, void* ud) static void cheevos_test_cheevo_set(bool official) { settings_t *settings = config_get_ptr(); - int mode = CHEEVOS_ACTIVE_SOFTCORE; + int mode = RCHEEVOS_ACTIVE_SOFTCORE; cheevos_cheevo_t* cheevo; int i, count; - if (settings && settings->bools.cheevos_hardcore_mode_enable && !cheevos_hardcore_paused) - mode = CHEEVOS_ACTIVE_HARDCORE; + if (settings && settings->bools.cheevos_hardcore_mode_enable && !rcheevos_hardcore_paused) + mode = RCHEEVOS_ACTIVE_HARDCORE; if (official) { @@ -696,7 +696,7 @@ static void cheevos_test_leaderboards(void) } } -void cheevos_reset_game(void) +void rcheevos_reset_game(void) { cheevos_cheevo_t* cheevo; cheevos_lboard_t* lboard; @@ -721,7 +721,7 @@ void cheevos_reset_game(void) } } -void cheevos_populate_menu(void* data) +void rcheevos_populate_menu(void* data) { #ifdef HAVE_MENU int i = 0; @@ -732,9 +732,9 @@ void cheevos_populate_menu(void* data) if ( settings->bools.cheevos_enable && settings->bools.cheevos_hardcore_mode_enable - && cheevos_loaded) + && rcheevos_loaded) { - if (!cheevos_hardcore_paused) + if (!rcheevos_hardcore_paused) menu_entries_append_enum(info->list, msg_hash_to_str(MENU_ENUM_LABEL_VALUE_ACHIEVEMENT_PAUSE), msg_hash_to_str(MENU_ENUM_LABEL_ACHIEVEMENT_PAUSE), @@ -752,7 +752,7 @@ void cheevos_populate_menu(void* data) for (i = 0, count = cheevos_locals.patchdata.core_count; i < count; i++, cheevo++) { - if (!(cheevo->active & CHEEVOS_ACTIVE_HARDCORE)) + if (!(cheevo->active & RCHEEVOS_ACTIVE_HARDCORE)) { menu_entries_append_enum(info->list, cheevo->info->title, cheevo->info->description, @@ -760,9 +760,9 @@ void cheevos_populate_menu(void* data) MENU_SETTINGS_CHEEVOS_START + i, 0, 0); set_badge_info(&badges_ctx, i, cheevo->info->badge, - (cheevo->active & CHEEVOS_ACTIVE_HARDCORE)); + (cheevo->active & RCHEEVOS_ACTIVE_HARDCORE)); } - else if (!(cheevo->active & CHEEVOS_ACTIVE_SOFTCORE)) + else if (!(cheevo->active & RCHEEVOS_ACTIVE_SOFTCORE)) { menu_entries_append_enum(info->list, cheevo->info->title, cheevo->info->description, @@ -770,7 +770,7 @@ void cheevos_populate_menu(void* data) MENU_SETTINGS_CHEEVOS_START + i, 0, 0); set_badge_info(&badges_ctx, i, cheevo->info->badge, - (cheevo->active & CHEEVOS_ACTIVE_SOFTCORE)); + (cheevo->active & RCHEEVOS_ACTIVE_SOFTCORE)); } else { @@ -780,7 +780,7 @@ void cheevos_populate_menu(void* data) MENU_SETTINGS_CHEEVOS_START + i, 0, 0); set_badge_info(&badges_ctx, i, cheevo->info->badge, - (cheevo->active & CHEEVOS_ACTIVE_SOFTCORE)); + (cheevo->active & RCHEEVOS_ACTIVE_SOFTCORE)); } } @@ -790,7 +790,7 @@ void cheevos_populate_menu(void* data) for (i = 0, count = cheevos_locals.patchdata.unofficial_count; i < count; i++, cheevo++) { - if (!(cheevo->active & CHEEVOS_ACTIVE_HARDCORE)) + if (!(cheevo->active & RCHEEVOS_ACTIVE_HARDCORE)) { menu_entries_append_enum(info->list, cheevo->info->title, cheevo->info->description, @@ -798,9 +798,9 @@ void cheevos_populate_menu(void* data) MENU_SETTINGS_CHEEVOS_START + i, 0, 0); set_badge_info(&badges_ctx, i, cheevo->info->badge, - (cheevo->active & CHEEVOS_ACTIVE_HARDCORE)); + (cheevo->active & RCHEEVOS_ACTIVE_HARDCORE)); } - else if (!(cheevo->active & CHEEVOS_ACTIVE_SOFTCORE)) + else if (!(cheevo->active & RCHEEVOS_ACTIVE_SOFTCORE)) { menu_entries_append_enum(info->list, cheevo->info->title, cheevo->info->description, @@ -808,7 +808,7 @@ void cheevos_populate_menu(void* data) MENU_SETTINGS_CHEEVOS_START + i, 0, 0); set_badge_info(&badges_ctx, i, cheevo->info->badge, - (cheevo->active & CHEEVOS_ACTIVE_SOFTCORE)); + (cheevo->active & RCHEEVOS_ACTIVE_SOFTCORE)); } else { @@ -818,7 +818,7 @@ void cheevos_populate_menu(void* data) MENU_SETTINGS_CHEEVOS_START + i, 0, 0); set_badge_info(&badges_ctx, i, cheevo->info->badge, - (cheevo->active & CHEEVOS_ACTIVE_SOFTCORE)); + (cheevo->active & RCHEEVOS_ACTIVE_SOFTCORE)); } } } @@ -839,7 +839,7 @@ void cheevos_populate_menu(void* data) #endif } -bool cheevos_get_description(cheevos_ctx_desc_t* desc) +bool rcheevos_get_description(rcheevos_ctx_desc_t* desc) { unsigned idx; const cheevos_cheevo_t* cheevo; @@ -849,7 +849,7 @@ bool cheevos_get_description(cheevos_ctx_desc_t* desc) *desc->s = 0; - if (cheevos_loaded) + if (rcheevos_loaded) { idx = desc->idx; @@ -871,15 +871,15 @@ bool cheevos_get_description(cheevos_ctx_desc_t* desc) return true; } -bool cheevos_apply_cheats(bool* data_bool) +bool rcheevos_apply_cheats(bool* data_bool) { - cheats_are_enabled = *data_bool; - cheats_were_enabled |= cheats_are_enabled; + rcheevos_cheats_are_enabled = *data_bool; + rcheevos_cheats_were_enabled |= rcheevos_cheats_are_enabled; return true; } -bool cheevos_unload(void) +bool rcheevos_unload(void) { bool running = false; unsigned i = 0, count = 0; @@ -904,7 +904,7 @@ bool cheevos_unload(void) #endif } - if (cheevos_loaded) + if (rcheevos_loaded) { for (i = 0, count = cheevos_locals.patchdata.core_count; i < count; i++) { @@ -925,20 +925,20 @@ bool cheevos_unload(void) CHEEVOS_FREE(cheevos_locals.unofficial); CHEEVOS_FREE(cheevos_locals.lboards); cheevos_free_patchdata(&cheevos_locals.patchdata); - cheevos_fixup_destroy(&cheevos_locals.fixups); + rcheevos_fixup_destroy(&cheevos_locals.fixups); cheevos_locals.core = NULL; cheevos_locals.unofficial = NULL; cheevos_locals.lboards = NULL; - cheevos_loaded = false; - cheevos_hardcore_paused = false; + rcheevos_loaded = false; + rcheevos_hardcore_paused = false; } return true; } -bool cheevos_toggle_hardcore_mode(void) +bool rcheevos_toggle_hardcore_mode(void) { settings_t *settings = config_get_ptr(); @@ -947,13 +947,13 @@ bool cheevos_toggle_hardcore_mode(void) /* reset and deinit rewind to avoid cheat the score */ if ( settings->bools.cheevos_hardcore_mode_enable - && !cheevos_hardcore_paused) + && !rcheevos_hardcore_paused) { const char *msg = msg_hash_to_str( MSG_CHEEVOS_HARDCORE_MODE_ENABLE); /* reset the state loaded flag in case it was set */ - cheevos_state_loaded_flag = false; + rcheevos_state_loaded_flag = false; /* send reset core cmd to avoid any user * savestate previusly loaded. */ @@ -974,7 +974,7 @@ bool cheevos_toggle_hardcore_mode(void) return true; } -void cheevos_test(void) +void rcheevos_test(void) { settings_t *settings = config_get_ptr(); @@ -987,28 +987,28 @@ void cheevos_test(void) if (settings->bools.cheevos_hardcore_mode_enable && settings->bools.cheevos_leaderboards_enable && - !cheevos_hardcore_paused) + !rcheevos_hardcore_paused) cheevos_test_leaderboards(); } } -bool cheevos_set_cheats(void) +bool rcheevos_set_cheats(void) { - cheats_were_enabled = cheats_are_enabled; + rcheevos_cheats_were_enabled = rcheevos_cheats_are_enabled; return true; } -void cheevos_set_support_cheevos(bool state) +void rcheevos_set_support_cheevos(bool state) { cheevos_locals.core_supports = state; } -bool cheevos_get_support_cheevos(void) +bool rcheevos_get_support_cheevos(void) { return cheevos_locals.core_supports; } -int cheevos_get_console(void) +int rcheevos_get_console(void) { return cheevos_locals.patchdata.console_id; } @@ -1365,7 +1365,7 @@ found: CORO_STOP(); } - cheevos_loaded = true; + rcheevos_loaded = true; /* * Inputs: CHEEVOS_VAR_GAMEID @@ -1382,13 +1382,13 @@ found: if (coro->settings->bools.cheevos_verbose_enable && cheevos_locals.patchdata.core_count > 0) { char msg[256]; - int mode = CHEEVOS_ACTIVE_SOFTCORE; + int mode = RCHEEVOS_ACTIVE_SOFTCORE; const cheevos_cheevo_t* cheevo = cheevos_locals.core; const cheevos_cheevo_t* end = cheevo + cheevos_locals.patchdata.core_count; int number_of_unlocked = cheevos_locals.patchdata.core_count; - if (coro->settings->bools.cheevos_hardcore_mode_enable && !cheevos_hardcore_paused) - mode = CHEEVOS_ACTIVE_HARDCORE; + if (coro->settings->bools.cheevos_hardcore_mode_enable && !rcheevos_hardcore_paused) + mode = RCHEEVOS_ACTIVE_HARDCORE; for (; cheevo < end; cheevo++) if (cheevo->active & mode) @@ -1961,7 +1961,7 @@ found: if (coro->json) { - mode = coro->i == 0 ? CHEEVOS_ACTIVE_SOFTCORE : CHEEVOS_ACTIVE_HARDCORE; + mode = coro->i == 0 ? RCHEEVOS_ACTIVE_SOFTCORE : RCHEEVOS_ACTIVE_HARDCORE; cheevos_deactivate_unlocks(coro->json, cheevos_unlock_cb, &mode); CHEEVOS_FREE(coro->json); } @@ -2035,14 +2035,14 @@ static void cheevos_task_handler(retro_task_t *task) } } -bool cheevos_load(const void *data) +bool rcheevos_load(const void *data) { retro_task_t *task; const struct retro_game_info *info = NULL; coro_t *coro = NULL; - cheevos_loaded = false; - cheevos_hardcore_paused = false; + rcheevos_loaded = false; + rcheevos_hardcore_paused = false; if (!cheevos_locals.core_supports || !data) return false; diff --git a/cheevos-new/cheevos.h b/cheevos-new/cheevos.h index 65aaabc31b..fce51e482c 100644 --- a/cheevos-new/cheevos.h +++ b/cheevos-new/cheevos.h @@ -27,49 +27,49 @@ RETRO_BEGIN_DECLS -typedef struct cheevos_ctx_desc +typedef struct rcheevos_ctx_desc { unsigned idx; char *s; size_t len; -} cheevos_ctx_desc_t; +} rcheevos_ctx_desc_t; enum { - CHEEVOS_ACTIVE_SOFTCORE = 1 << 0, - CHEEVOS_ACTIVE_HARDCORE = 1 << 1 + RCHEEVOS_ACTIVE_SOFTCORE = 1 << 0, + RCHEEVOS_ACTIVE_HARDCORE = 1 << 1 }; -bool cheevos_load(const void *data); +bool rcheevos_load(const void *data); -void cheevos_reset_game(void); +void rcheevos_reset_game(void); -void cheevos_populate_menu(void *data); +void rcheevos_populate_menu(void *data); -bool cheevos_get_description(cheevos_ctx_desc_t *desc); +bool rcheevos_get_description(rcheevos_ctx_desc_t *desc); -bool cheevos_apply_cheats(bool *data_bool); +bool rcheevos_apply_cheats(bool *data_bool); -bool cheevos_unload(void); +bool rcheevos_unload(void); -bool cheevos_toggle_hardcore_mode(void); +bool rcheevos_toggle_hardcore_mode(void); -void cheevos_test(void); +void rcheevos_test(void); -bool cheevos_set_cheats(void); +bool rcheevos_set_cheats(void); -void cheevos_set_support_cheevos(bool state); +void rcheevos_set_support_cheevos(bool state); -bool cheevos_get_support_cheevos(void); +bool rcheevos_get_support_cheevos(void); -int cheevos_get_console(void); +int rcheevos_get_console(void); -extern bool cheevos_loaded; -extern bool cheevos_hardcore_active; -extern bool cheevos_hardcore_paused; -extern bool cheevos_state_loaded_flag; -extern int cheats_are_enabled; -extern int cheats_were_enabled; +extern bool rcheevos_loaded; +extern bool rcheevos_hardcore_active; +extern bool rcheevos_hardcore_paused; +extern bool rcheevos_state_loaded_flag; +extern int rcheevos_cheats_are_enabled; +extern int rcheevos_cheats_were_enabled; RETRO_END_DECLS diff --git a/cheevos-new/fixup.c b/cheevos-new/fixup.c index 56e0436cb6..a81e90d1a1 100644 --- a/cheevos-new/fixup.c +++ b/cheevos-new/fixup.c @@ -64,20 +64,20 @@ static size_t cheevos_var_highest_bit(size_t n) return n ^ (n >> 1); } -void cheevos_fixup_init(cheevos_fixups_t* fixups) +void rcheevos_fixup_init(cheevos_fixups_t* fixups) { fixups->elements = NULL; fixups->capacity = fixups->count = 0; fixups->dirty = false; } -void cheevos_fixup_destroy(cheevos_fixups_t* fixups) +void rcheevos_fixup_destroy(cheevos_fixups_t* fixups) { CHEEVOS_FREE(fixups->elements); - cheevos_fixup_init(fixups); + rcheevos_fixup_init(fixups); } -const uint8_t* cheevos_fixup_find(cheevos_fixups_t* fixups, unsigned address, int console) +const uint8_t* rcheevos_fixup_find(cheevos_fixups_t* fixups, unsigned address, int console) { cheevos_fixup_t key; cheevos_fixup_t* found; @@ -114,13 +114,13 @@ const uint8_t* cheevos_fixup_find(cheevos_fixups_t* fixups, unsigned address, in fixups->elements[fixups->count].address = address; fixups->elements[fixups->count++].location = location = - cheevos_patch_address(address, console); + rcheevos_patch_address(address, console); fixups->dirty = true; return location; } -const uint8_t* cheevos_patch_address(unsigned address, int console) +const uint8_t* rcheevos_patch_address(unsigned address, int console) { rarch_system_info_t* system = runloop_get_system_info(); const void* pointer = NULL; diff --git a/cheevos-new/fixup.h b/cheevos-new/fixup.h index 41893a0ba8..e2b9946a0d 100644 --- a/cheevos-new/fixup.h +++ b/cheevos-new/fixup.h @@ -36,12 +36,12 @@ typedef struct bool dirty; } cheevos_fixups_t; -void cheevos_fixup_init(cheevos_fixups_t* fixups); -void cheevos_fixup_destroy(cheevos_fixups_t* fixups); +void rcheevos_fixup_init(cheevos_fixups_t* fixups); +void rcheevos_fixup_destroy(cheevos_fixups_t* fixups); -const uint8_t* cheevos_fixup_find(cheevos_fixups_t* fixups, unsigned address, int console); +const uint8_t* rcheevos_fixup_find(cheevos_fixups_t* fixups, unsigned address, int console); -const uint8_t* cheevos_patch_address(unsigned address, int console); +const uint8_t* rcheevos_patch_address(unsigned address, int console); RETRO_END_DECLS diff --git a/cheevos-new/util.h b/cheevos-new/util.h index 4e389cf404..ac556bf681 100644 --- a/cheevos-new/util.h +++ b/cheevos-new/util.h @@ -25,13 +25,13 @@ Setup - mainly for debugging *****************************************************************************/ /* Define this macro to get extra-verbose log for cheevos. */ -#undef CHEEVOS_VERBOSE +#define CHEEVOS_VERBOSE /***************************************************************************** End of setup *****************************************************************************/ -#define CHEEVOS_TAG "[CHEEVOS]: " +#define CHEEVOS_TAG "[RCHEEVOS]: " #define CHEEVOS_FREE(p) do { void* q = (void*)p; if (q != NULL) free(q); } while (0) #ifdef CHEEVOS_VERBOSE diff --git a/cheevos/cheevos.h b/cheevos/cheevos.h index c65c2afbc9..14c91380eb 100644 --- a/cheevos/cheevos.h +++ b/cheevos/cheevos.h @@ -34,7 +34,7 @@ Setup - mainly for debugging *****************************************************************************/ /* Define this macro to get extra-verbose log for cheevos. */ -#undef CHEEVOS_VERBOSE +#define CHEEVOS_VERBOSE /***************************************************************************** End of setup diff --git a/command.c b/command.c index aefc2fe531..b061525f6a 100755 --- a/command.c +++ b/command.c @@ -41,11 +41,9 @@ #ifdef HAVE_CHEEVOS #include "cheevos/cheevos.h" -#ifdef HAVE_NEW_CHEEVOS -#include "cheevos-new/fixup.h" -#else #include "cheevos/var.h" -#endif +#include "cheevos-new/cheevos.h" /* RCHEEVOS TODO: remove lines */ +#include "cheevos-new/fixup.h" #endif #ifdef HAVE_DISCORD @@ -276,9 +274,10 @@ bool command_set_shader(const char *arg) #define SMY_CMD_STR "READ_CORE_RAM" static bool command_read_ram(const char *arg) { -#if !defined(HAVE_NEW_CHEEVOS) + /* RCHEEVOS TODO: remove settings init and test */ + settings_t *settings = config_get_ptr(); cheevos_var_t var; -#endif + unsigned i; char *reply = NULL; const uint8_t *data = NULL; @@ -294,13 +293,18 @@ static bool command_read_ram(const char *arg) reply[0] = '\0'; reply_at = reply + snprintf(reply, alloc_size - 1, SMY_CMD_STR " %x", addr); -#if defined(HAVE_NEW_CHEEVOS) - data = cheevos_patch_address(addr, cheevos_get_console()); -#else - var.value = addr; - cheevos_var_patch_addr(&var, cheevos_get_console()); - data = cheevos_var_get_memory(&var); -#endif + /* RCHEEVOS TODO: remove if condition below */ + if (settings->bools.cheevos_rcheevos_enable) + { + data = rcheevos_patch_address(addr, rcheevos_get_console()); + } + /* RCHEEVOS TODO: remove whole else block below */ + else + { + var.value = addr; + cheevos_var_patch_addr(&var, cheevos_get_console()); + data = cheevos_var_get_memory(&var); + } if (data) { @@ -321,19 +325,28 @@ static bool command_read_ram(const char *arg) static bool command_write_ram(const char *arg) { - unsigned nbytes = 0; -#if defined(HAVE_NEW_CHEEVOS) - unsigned int addr = strtoul(arg, (char**)&arg, 16); - uint8_t *data = (uint8_t *)cheevos_patch_address(addr, cheevos_get_console()); -#else - cheevos_var_t var; - uint8_t *data = NULL; + unsigned nbytes = 0; + uint8_t *data = NULL; + unsigned int addr = 0; - var.value = strtoul(arg, (char**)&arg, 16); - cheevos_var_patch_addr(&var, cheevos_get_console()); + /* RCHEEVOS TODO: remove settings init and test */ + settings_t *settings = config_get_ptr(); - data = cheevos_var_get_memory(&var); -#endif + if (settings->bools.cheevos_rcheevos_enable) + { + addr = strtoul(arg, (char**)&arg, 16); + data = (uint8_t *)rcheevos_patch_address(addr, rcheevos_get_console()); + } + /* RCHEEVOS TODO: remove the whole else block below */ + else + { + cheevos_var_t var; + + var.value = strtoul(arg, (char**)&arg, 16); + cheevos_var_patch_addr(&var, cheevos_get_console()); + + data = cheevos_var_get_memory(&var); + } if (data) { @@ -1089,7 +1102,9 @@ static void command_event_init_controllers(void) static void command_event_deinit_core(bool reinit) { #ifdef HAVE_CHEEVOS - cheevos_unload(); + /* RCHEEVOS TODO: remove settings init and test */ + settings_t *settings = config_get_ptr(); + settings->bools.cheevos_rcheevos_enable ? rcheevos_unload() : cheevos_unload(); #endif RARCH_LOG("Unloading game..\n"); @@ -1144,7 +1159,8 @@ static void command_event_load_auto_state(void) #endif #ifdef HAVE_CHEEVOS - if (cheevos_hardcore_active) + /* RCHEEVOS TODO: remove OR below */ + if (cheevos_hardcore_active || rcheevos_hardcore_active) goto error; #endif @@ -1395,7 +1411,8 @@ static bool command_event_save_auto_state(void) goto error; #ifdef HAVE_CHEEVOS - if (cheevos_hardcore_active) + /* RCHEEVOS TODO: remove OR below */ + if (cheevos_hardcore_active || rcheevos_hardcore_active) goto error; #endif @@ -1695,7 +1712,8 @@ static bool command_event_main_state(unsigned cmd) if (content_load_state(state_path, false, false)) { #ifdef HAVE_CHEEVOS - cheevos_state_loaded_flag = true; + /* RCHEEVOS TODO: remove duplication below */ + rcheevos_state_loaded_flag = cheevos_state_loaded_flag = true; #endif ret = true; #ifdef HAVE_NETWORKING @@ -1842,7 +1860,8 @@ bool command_event(enum event_command cmd, void *data) return false; #ifdef HAVE_CHEEVOS - if (cheevos_hardcore_active) + /* RCHEEVOS TODO: remove OR below */ + if (cheevos_hardcore_active || rcheevos_hardcore_active) return false; #endif if (!command_event_main_state(cmd)) @@ -1872,29 +1891,34 @@ bool command_event(enum event_command cmd, void *data) command_event_init_controllers(); break; case CMD_EVENT_RESET: + /* RCHEEVOS TODO: remove starting block bracket, settings init and tests */ + { #ifdef HAVE_CHEEVOS - cheevos_state_loaded_flag = false; - cheevos_hardcore_paused = false; + settings_t *settings = config_get_ptr(); + rcheevos_state_loaded_flag = cheevos_state_loaded_flag = false; + rcheevos_hardcore_paused = cheevos_hardcore_paused = false; #endif - RARCH_LOG("%s.\n", msg_hash_to_str(MSG_RESET)); - runloop_msg_queue_push(msg_hash_to_str(MSG_RESET), 1, 120, true, NULL, MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO); + RARCH_LOG("%s.\n", msg_hash_to_str(MSG_RESET)); + runloop_msg_queue_push(msg_hash_to_str(MSG_RESET), 1, 120, true, NULL, MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO); #ifdef HAVE_CHEEVOS - cheevos_set_cheats(); + settings->bools.cheevos_rcheevos_enable ? rcheevos_set_cheats() : cheevos_set_cheats(); #endif - core_reset(); + core_reset(); #ifdef HAVE_CHEEVOS - cheevos_reset_game(); + settings->bools.cheevos_rcheevos_enable ? rcheevos_reset_game() : cheevos_reset_game(); #endif #if HAVE_NETWORKING - netplay_driver_ctl(RARCH_NETPLAY_CTL_RESET, NULL); + netplay_driver_ctl(RARCH_NETPLAY_CTL_RESET, NULL); #endif - return false; + return false; + } case CMD_EVENT_SAVE_STATE: { settings_t *settings = config_get_ptr(); #ifdef HAVE_CHEEVOS - if (cheevos_hardcore_active) + /* RCHEEVOS TODO: remove OR below */ + if (cheevos_hardcore_active || rcheevos_hardcore_active) return false; #endif @@ -1976,7 +2000,11 @@ bool command_event(enum event_command cmd, void *data) break; case CMD_EVENT_CHEEVOS_HARDCORE_MODE_TOGGLE: #ifdef HAVE_CHEEVOS - cheevos_toggle_hardcore_mode(); + /* RCHEEVOS TODO: remove starting block bracket, settings init and test */ + { + settings_t *settings = config_get_ptr(); + settings->bools.cheevos_rcheevos_enable ? rcheevos_toggle_hardcore_mode() : cheevos_toggle_hardcore_mode(); + } #endif break; /* this fallthrough is on purpose, it should do @@ -2017,7 +2045,8 @@ bool command_event(enum event_command cmd, void *data) break; case CMD_EVENT_REWIND_DEINIT: #ifdef HAVE_CHEEVOS - if (cheevos_hardcore_active) + /* RCHEEVOS TODO: remove OR below */ + if (cheevos_hardcore_active || rcheevos_hardcore_active) return false; #endif state_manager_event_deinit(); @@ -2026,7 +2055,8 @@ bool command_event(enum event_command cmd, void *data) { settings_t *settings = config_get_ptr(); #ifdef HAVE_CHEEVOS - if (cheevos_hardcore_active) + /* RCHEEVOS TODO: remove OR below */ + if (cheevos_hardcore_active || rcheevos_hardcore_active) return false; #endif if (settings->bools.rewind_enable) diff --git a/configuration.c b/configuration.c index 8aecd689c3..d06da91870 100644 --- a/configuration.c +++ b/configuration.c @@ -1521,6 +1521,8 @@ static struct config_bool_setting *populate_settings_bool(settings_t *settings, SETTING_BOOL("cheevos_leaderboards_enable", &settings->bools.cheevos_leaderboards_enable, true, false, false); SETTING_BOOL("cheevos_verbose_enable", &settings->bools.cheevos_verbose_enable, true, false, false); SETTING_BOOL("cheevos_auto_screenshot", &settings->bools.cheevos_auto_screenshot, true, false, false); + SETTING_BOOL("cheevos_rcheevos_enable", &settings->bools.cheevos_rcheevos_enable, true, false, false); + /* RCHEEVOS TODO: remove line above */ #ifdef HAVE_XMB SETTING_BOOL("cheevos_badges_enable", &settings->bools.cheevos_badges_enable, true, false, false); #endif diff --git a/configuration.h b/configuration.h index f1ea2f6b3b..029c1fade3 100644 --- a/configuration.h +++ b/configuration.h @@ -237,6 +237,7 @@ typedef struct settings bool cheevos_badges_enable; bool cheevos_verbose_enable; bool cheevos_auto_screenshot; + bool cheevos_rcheevos_enable; /* RCHEEVOS TODO: remove line */ /* Camera */ bool camera_allow; diff --git a/discord/discord.c b/discord/discord.c index 8e8f339709..af36ee22b9 100644 --- a/discord/discord.c +++ b/discord/discord.c @@ -41,6 +41,7 @@ #ifdef HAVE_CHEEVOS #include "../cheevos/cheevos.h" +#include "../cheevos-new/cheevos.h" /* RCHEEVOS TODO: remove line */ #endif #ifdef HAVE_MENU diff --git a/dynamic.c b/dynamic.c index 0cf7bd830c..3b0f4ee49b 100644 --- a/dynamic.c +++ b/dynamic.c @@ -37,6 +37,7 @@ #ifdef HAVE_CHEEVOS #include "cheevos/cheevos.h" +#include "cheevos-new/cheevos.h" /* RCHEEVOS TODO: remove line */ #endif #ifdef HAVE_OPENGL @@ -1924,7 +1925,8 @@ bool rarch_environment_cb(unsigned cmd, void *data) { bool state = *(const bool*)data; RARCH_LOG("Environ SET_SUPPORT_ACHIEVEMENTS: %s.\n", state ? "yes" : "no"); - cheevos_set_support_cheevos(state); + /* RCHEEVOS TODO: remove settings test */ + settings->bools.cheevos_rcheevos_enable ? rcheevos_set_support_cheevos(state) : cheevos_set_support_cheevos(state); } #endif break; diff --git a/griffin/griffin.c b/griffin/griffin.c index 4c7deb0202..6a629b413b 100644 --- a/griffin/griffin.c +++ b/griffin/griffin.c @@ -158,30 +158,15 @@ ACHIEVEMENTS #include "../libretro-common/formats/json/jsonsax.c" #include "../network/net_http_special.c" -#ifdef HAVE_NEW_CHEEVOS #include "../cheevos-new/cheevos.c" -#include "../cheevos-new/badges.c" #include "../cheevos-new/fixup.c" #include "../cheevos-new/hash.c" #include "../cheevos-new/parser.c" -#include "../deps/rcheevos/src/rcheevos/alloc.c" -#include "../deps/rcheevos/src/rcheevos/condition.c" -#include "../deps/rcheevos/src/rcheevos/condset.c" -#include "../deps/rcheevos/src/rcheevos/expression.c" -#include "../deps/rcheevos/src/rcheevos/format.c" -#include "../deps/rcheevos/src/rcheevos/lboard.c" -#include "../deps/rcheevos/src/rcheevos/operand.c" -#include "../deps/rcheevos/src/rcheevos/term.c" -#include "../deps/rcheevos/src/rcheevos/trigger.c" -#include "../deps/rcheevos/src/rcheevos/value.c" -#include "../deps/rcheevos/src/rurl/url.c" -#else #include "../cheevos/cheevos.c" #include "../cheevos/badges.c" #include "../cheevos/cond.c" #include "../cheevos/var.c" -#endif #endif diff --git a/managers/cheat_manager.c b/managers/cheat_manager.c index 9dec2d8ac0..7f14060c6a 100644 --- a/managers/cheat_manager.c +++ b/managers/cheat_manager.c @@ -41,6 +41,7 @@ #ifdef HAVE_CHEEVOS #include "../cheevos/cheevos.h" +#include "../cheevos-new/cheevos.h" /* RCHEEVOS TODO: remove line */ #endif #include "cheat_manager.h" @@ -68,6 +69,8 @@ unsigned cheat_manager_get_size(void) void cheat_manager_apply_cheats(void) { #ifdef HAVE_CHEEVOS + /* RCHEEVOS TODO: remove settings init */ + settings_t *settings = config_get_ptr(); bool data_bool = false; #endif unsigned i, idx = 0; @@ -100,7 +103,8 @@ void cheat_manager_apply_cheats(void) #ifdef HAVE_CHEEVOS data_bool = idx != 0; - cheevos_apply_cheats(&data_bool); + /* RCHEEVOS TODO: remove settings test */ + settings->bools.cheevos_rcheevos_enable ? rcheevos_apply_cheats(&data_bool) : cheevos_apply_cheats(&data_bool); #endif } diff --git a/menu/cbs/menu_cbs_ok.c b/menu/cbs/menu_cbs_ok.c index 6e83490a12..4cf1ec542c 100644 --- a/menu/cbs/menu_cbs_ok.c +++ b/menu/cbs/menu_cbs_ok.c @@ -78,6 +78,7 @@ #ifdef HAVE_CHEEVOS #include "../cheevos/cheevos.h" +#include "../cheevos-new/cheevos.h" /* RCHEEVOS TODO: remove line */ #endif #include "../../record/record_driver.h" diff --git a/menu/cbs/menu_cbs_sublabel.c b/menu/cbs/menu_cbs_sublabel.c index 108446b63c..9b446e85a3 100644 --- a/menu/cbs/menu_cbs_sublabel.c +++ b/menu/cbs/menu_cbs_sublabel.c @@ -21,6 +21,7 @@ #ifdef HAVE_CHEEVOS #include "../../cheevos/cheevos.h" +#include "../../cheevos-new/cheevos.h" /* RCHEEVOS TODO: remove line */ #endif #include "../../verbosity.h" @@ -572,12 +573,14 @@ static int action_bind_sublabel_cheevos_entry( char *s, size_t len) { #ifdef HAVE_CHEEVOS + settings_t *settings = config_get_ptr(); /* RCHEEVOS TODO: remove line */ cheevos_ctx_desc_t desc_info; unsigned new_id = type - MENU_SETTINGS_CHEEVOS_START; desc_info.idx = new_id; desc_info.s = s; desc_info.len = len; - cheevos_get_description(&desc_info); + /* RCHEEVOS TODO: remove test */ + settings->bools.cheevos_rcheevos_enable ? rcheevos_get_description((rcheevos_ctx_desc_t*) &desc_info) : cheevos_get_description(&desc_info); strlcpy(s, desc_info.s, len); #endif diff --git a/menu/menu_displaylist.c b/menu/menu_displaylist.c index 7d3f2b7652..8f48e54846 100644 --- a/menu/menu_displaylist.c +++ b/menu/menu_displaylist.c @@ -39,6 +39,7 @@ #ifdef HAVE_CHEEVOS #include "../cheevos/cheevos.h" +#include "../cheevos-new/cheevos.h" /* RCHEEVOS TODO: remove line */ #endif #ifdef HAVE_NETWORKING @@ -2686,7 +2687,8 @@ static int menu_displaylist_parse_load_content_settings( if (settings->bools.quick_menu_show_save_load_state #ifdef HAVE_CHEEVOS - && !cheevos_hardcore_active + /* RCHEEVOS TODO: remove 'rcheevos_*' below */ + && !(rcheevos_hardcore_active || cheevos_hardcore_active) #endif ) { @@ -2709,7 +2711,8 @@ static int menu_displaylist_parse_load_content_settings( if (settings->bools.quick_menu_show_save_load_state && settings->bools.quick_menu_show_undo_save_load_state #ifdef HAVE_CHEEVOS - && !cheevos_hardcore_active + /* RCHEEVOS TODO: remove 'rcheevos_*' below */ + && !(rcheevos_hardcore_active || cheevos_hardcore_active) #endif ) { @@ -5040,10 +5043,13 @@ bool menu_displaylist_ctl(enum menu_displaylist_ctl_state type, menu_displaylist break; case DISPLAYLIST_ACHIEVEMENT_LIST: #ifdef HAVE_CHEEVOS - menu_entries_ctl(MENU_ENTRIES_CTL_CLEAR, info->list); - cheevos_populate_menu(info); - info->need_push = true; - info->need_refresh = true; + { /* RCHEEVOS TODO: remove brackets, settings and settings test */ + settings_t *settings = config_get_ptr(); + menu_entries_ctl(MENU_ENTRIES_CTL_CLEAR, info->list); + settings->bools.cheevos_rcheevos_enable ? rcheevos_populate_menu(info) : cheevos_populate_menu(info); + info->need_push = true; + info->need_refresh = true; + } #endif break; diff --git a/menu/menu_setting.c b/menu/menu_setting.c index 2bad35bb7d..2c14999471 100644 --- a/menu/menu_setting.c +++ b/menu/menu_setting.c @@ -50,6 +50,7 @@ #ifdef HAVE_CHEEVOS #include "../cheevos/cheevos.h" +#include "../cheevos-new/cheevos.h" /* RCHEEVOS TODO: remove line */ #endif #include "../frontend/frontend_driver.h" @@ -3465,7 +3466,8 @@ static void achievement_hardcore_mode_write_handler(rarch_setting_t *setting) if (settings && settings->bools.cheevos_enable && settings->bools.cheevos_hardcore_mode_enable) { - cheevos_toggle_hardcore_mode(); + /* RCHEEVOS TODO: remove settings test */ + settings->bools.cheevos_rcheevos_enable ? rcheevos_toggle_hardcore_mode() : cheevos_toggle_hardcore_mode(); command_event(CMD_EVENT_RESET, NULL); return; } diff --git a/menu/widgets/menu_dialog.c b/menu/widgets/menu_dialog.c index 2fbd65d0b0..5fd0a35c0a 100644 --- a/menu/widgets/menu_dialog.c +++ b/menu/widgets/menu_dialog.c @@ -23,6 +23,7 @@ #ifdef HAVE_CHEEVOS #include "../../cheevos/cheevos.h" +#include "../../cheevos-new/cheevos.h" /* RCHEEVOS TODO: remove line */ #endif #include "menu_dialog.h" @@ -173,10 +174,14 @@ int menu_dialog_iterate(char *s, size_t len, const char *label) #ifdef HAVE_CHEEVOS case MENU_DIALOG_HELP_CHEEVOS_DESCRIPTION: - desc_info.idx = menu_dialog_current_id; - desc_info.s = s; - desc_info.len = len; - cheevos_get_description(&desc_info); + { /* RCHEEVOS TODO: remove brackets, settings and settings test */ + settings_t *settings = config_get_ptr(); + desc_info.idx = menu_dialog_current_id; + desc_info.s = s; + desc_info.len = len; + settings->bools.cheevos_rcheevos_enable ? rcheevos_get_description((rcheevos_ctx_desc_t*) &desc_info) : cheevos_get_description(&desc_info); + + } break; #endif diff --git a/network/httpserver/httpserver.c b/network/httpserver/httpserver.c index 607c340511..8831bbf3ae 100644 --- a/network/httpserver/httpserver.c +++ b/network/httpserver/httpserver.c @@ -30,6 +30,7 @@ #include "../../gfx/video_driver.h" #include "../../managers/core_option_manager.h" #include "../../cheevos/cheevos.h" +#include "../../cheevos-new/cheevos.h" /* RCHEEVOS TODO: remove line */ #include "../../content.h" #define BASIC_INFO "info" diff --git a/retroarch.c b/retroarch.c index e7afc9bfff..91347ea49a 100644 --- a/retroarch.c +++ b/retroarch.c @@ -78,6 +78,7 @@ #ifdef HAVE_CHEEVOS #include "cheevos/cheevos.h" +#include "cheevos-new/cheevos.h" /* RCHEEVOS TODO: remove line */ #endif #ifdef HAVE_DISCORD @@ -3231,7 +3232,8 @@ bool runloop_msg_queue_pull(const char **ret) */ #define time_to_exit(quit_key_pressed) (runloop_shutdown_initiated || quit_key_pressed || !is_alive || bsv_movie_is_end_of_file() || ((runloop_max_frames != 0) && (frame_count >= runloop_max_frames)) || runloop_exec) -#define runloop_check_cheevos() (settings->bools.cheevos_enable && cheevos_loaded && (!cheats_are_enabled && !cheats_were_enabled)) +/* RCHEEVOS TODO: remove 'rcheevos_*' tests below */ +#define runloop_check_cheevos() (settings->bools.cheevos_enable && (rcheevos_loaded || cheevos_loaded) && (!(rcheevos_cheats_are_enabled || cheats_are_enabled) && !(rcheevos_cheats_were_enabled || cheats_were_enabled))) #ifdef HAVE_NETWORKING /* FIXME: This is an ugly way to tell Netplay this... */ @@ -4118,17 +4120,18 @@ static enum runloop_state runloop_check_state( } #ifdef HAVE_CHEEVOS - cheevos_hardcore_active = settings->bools.cheevos_enable + /* RCHEEVOS TODO: remove the 'rcheevos_*' below */ + rcheevos_hardcore_active = cheevos_hardcore_active = settings->bools.cheevos_enable && settings->bools.cheevos_hardcore_mode_enable - && cheevos_loaded && !cheevos_hardcore_paused; + && (rcheevos_loaded || cheevos_loaded) && !(rcheevos_hardcore_paused || cheevos_hardcore_paused); - if (cheevos_hardcore_active && cheevos_state_loaded_flag) + if ((rcheevos_hardcore_active || cheevos_hardcore_active) && (rcheevos_state_loaded_flag || cheevos_state_loaded_flag)) { - cheevos_hardcore_paused = true; + rcheevos_hardcore_paused = cheevos_hardcore_paused = true; runloop_msg_queue_push(msg_hash_to_str(MSG_CHEEVOS_HARDCORE_MODE_DISABLED), 0, 180, true, NULL, MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO); } - if (!cheevos_hardcore_active) + if (!(rcheevos_hardcore_active || cheevos_hardcore_active)) #endif { char s[128]; @@ -4144,7 +4147,8 @@ static enum runloop_state runloop_check_state( /* Checks if slowmotion toggle/hold was being pressed and/or held. */ #ifdef HAVE_CHEEVOS - if (!cheevos_hardcore_active) + /* RCHEEVOS TODO: remove the 'rcheevos_*' below */ + if (!(rcheevos_hardcore_active || cheevos_hardcore_active)) #endif { static bool old_slowmotion_button_state = false; @@ -4493,8 +4497,8 @@ int runloop_iterate(unsigned *sleep_ms) rarch_core_runtime_tick(); #ifdef HAVE_CHEEVOS - if (runloop_check_cheevos()) - cheevos_test(); + if (runloop_check_cheevos()) /* RCHEEVOS TODO: remove settings test */ + settings->bools.cheevos_rcheevos_enable ? rcheevos_test() : cheevos_test(); #endif cheat_manager_apply_retro_cheats(); diff --git a/tasks/task_content.c b/tasks/task_content.c index ec809fa14f..6cc586c5c0 100644 --- a/tasks/task_content.c +++ b/tasks/task_content.c @@ -71,6 +71,7 @@ #ifdef HAVE_CHEEVOS #include "../cheevos/cheevos.h" +#include "../cheevos-new/cheevos.h" /* RCHEEVOS TODO: remove line */ #endif #include "task_content.h" @@ -738,13 +739,15 @@ static bool content_file_load( #ifdef HAVE_CHEEVOS if (!special) { + /* RCHEEVOS TODO: remove settings and settings tests */ + settings_t *settings = config_get_ptr(); const char *content_path = content->elems[0].data; enum rarch_content_type type = path_is_media_type(content_path); - cheevos_set_cheats(); + settings->bools.cheevos_rcheevos_enable ? rcheevos_set_cheats() : cheevos_set_cheats(); if (type == RARCH_CONTENT_NONE && !string_is_empty(content_path)) - cheevos_load(info); + settings->bools.cheevos_rcheevos_enable ? rcheevos_load(info) : cheevos_load(info); } #endif From 4506a58e3169d4afe23b9dc1acf75087cab474ad Mon Sep 17 00:00:00 2001 From: meleu Date: Tue, 19 Mar 2019 21:08:26 -0300 Subject: [PATCH 2/9] update rcheevos files --- deps/rcheevos/include/rcheevos.h | 66 +- deps/rcheevos/src/rcheevos/alloc.c | 14 + deps/rcheevos/src/rcheevos/condition.c | 1 + deps/rcheevos/src/rcheevos/condset.c | 17 +- deps/rcheevos/src/rcheevos/format.c | 18 +- deps/rcheevos/src/rcheevos/internal.h | 13 +- deps/rcheevos/src/rcheevos/operand.c | 13 + deps/rcheevos/src/rcheevos/richpresence.c | 418 + deps/rcheevos/src/rcheevos/trigger.c | 2 + deps/rcheevos/test/Makefile | 2 +- deps/rcheevos/test/lua/Makefile | 114 + deps/rcheevos/test/lua/README | 6 + deps/rcheevos/test/lua/doc/contents.html | 619 + deps/rcheevos/test/lua/doc/index.css | 21 + deps/rcheevos/test/lua/doc/logo.gif | Bin 0 -> 9893 bytes deps/rcheevos/test/lua/doc/lua.1 | 112 + deps/rcheevos/test/lua/doc/lua.css | 164 + deps/rcheevos/test/lua/doc/luac.1 | 118 + deps/rcheevos/test/lua/doc/manual.css | 21 + deps/rcheevos/test/lua/doc/manual.html | 10985 ++++++++++++++++ .../test/lua/doc/osi-certified-72x60.png | Bin 0 -> 3774 bytes deps/rcheevos/test/lua/doc/readme.html | 365 + deps/rcheevos/test/lua/src/Makefile | 197 + deps/rcheevos/test/lua/src/lapi.c | 1298 ++ deps/rcheevos/test/lua/src/lapi.h | 24 + deps/rcheevos/test/lua/src/lauxlib.c | 1043 ++ deps/rcheevos/test/lua/src/lauxlib.h | 264 + deps/rcheevos/test/lua/src/lbaselib.c | 498 + deps/rcheevos/test/lua/src/lbitlib.c | 233 + deps/rcheevos/test/lua/src/lcode.c | 1203 ++ deps/rcheevos/test/lua/src/lcode.h | 88 + deps/rcheevos/test/lua/src/lcorolib.c | 168 + deps/rcheevos/test/lua/src/lctype.c | 55 + deps/rcheevos/test/lua/src/lctype.h | 95 + deps/rcheevos/test/lua/src/ldblib.c | 456 + deps/rcheevos/test/lua/src/ldebug.c | 698 + deps/rcheevos/test/lua/src/ldebug.h | 39 + deps/rcheevos/test/lua/src/ldo.c | 802 ++ deps/rcheevos/test/lua/src/ldo.h | 58 + deps/rcheevos/test/lua/src/ldump.c | 215 + deps/rcheevos/test/lua/src/lfunc.c | 151 + deps/rcheevos/test/lua/src/lfunc.h | 61 + deps/rcheevos/test/lua/src/lgc.c | 1178 ++ deps/rcheevos/test/lua/src/lgc.h | 147 + deps/rcheevos/test/lua/src/linit.c | 68 + deps/rcheevos/test/lua/src/liolib.c | 771 ++ deps/rcheevos/test/lua/src/llex.c | 565 + deps/rcheevos/test/lua/src/llex.h | 85 + deps/rcheevos/test/lua/src/llimits.h | 323 + deps/rcheevos/test/lua/src/lmathlib.c | 410 + deps/rcheevos/test/lua/src/lmem.c | 100 + deps/rcheevos/test/lua/src/lmem.h | 69 + deps/rcheevos/test/lua/src/loadlib.c | 790 ++ deps/rcheevos/test/lua/src/lobject.c | 521 + deps/rcheevos/test/lua/src/lobject.h | 549 + deps/rcheevos/test/lua/src/lopcodes.c | 124 + deps/rcheevos/test/lua/src/lopcodes.h | 297 + deps/rcheevos/test/lua/src/loslib.c | 407 + deps/rcheevos/test/lua/src/lparser.c | 1650 +++ deps/rcheevos/test/lua/src/lparser.h | 133 + deps/rcheevos/test/lua/src/lprefix.h | 45 + deps/rcheevos/test/lua/src/lstate.c | 347 + deps/rcheevos/test/lua/src/lstate.h | 235 + deps/rcheevos/test/lua/src/lstring.c | 248 + deps/rcheevos/test/lua/src/lstring.h | 49 + deps/rcheevos/test/lua/src/lstrlib.c | 1584 +++ deps/rcheevos/test/lua/src/ltable.c | 669 + deps/rcheevos/test/lua/src/ltable.h | 66 + deps/rcheevos/test/lua/src/ltablib.c | 450 + deps/rcheevos/test/lua/src/ltm.c | 165 + deps/rcheevos/test/lua/src/ltm.h | 76 + deps/rcheevos/test/lua/src/lua.c | 612 + deps/rcheevos/test/lua/src/lua.h | 486 + deps/rcheevos/test/lua/src/lua.hpp | 9 + deps/rcheevos/test/lua/src/luac.c | 449 + deps/rcheevos/test/lua/src/luaconf.h | 783 ++ deps/rcheevos/test/lua/src/lualib.h | 61 + deps/rcheevos/test/lua/src/lundump.c | 279 + deps/rcheevos/test/lua/src/lundump.h | 32 + deps/rcheevos/test/lua/src/lutf8lib.c | 256 + deps/rcheevos/test/lua/src/lvm.c | 1322 ++ deps/rcheevos/test/lua/src/lvm.h | 113 + deps/rcheevos/test/lua/src/lzio.c | 68 + deps/rcheevos/test/lua/src/lzio.h | 66 + deps/rcheevos/test/rcheevos-test.sln | 31 + deps/rcheevos/test/rcheevos-test.vcxproj | 176 + .../test/rcheevos-test.vcxproj.filters | 151 + deps/rcheevos/test/test.c | 1205 +- 88 files changed, 38910 insertions(+), 45 deletions(-) create mode 100644 deps/rcheevos/src/rcheevos/richpresence.c create mode 100644 deps/rcheevos/test/lua/Makefile create mode 100644 deps/rcheevos/test/lua/README create mode 100644 deps/rcheevos/test/lua/doc/contents.html create mode 100644 deps/rcheevos/test/lua/doc/index.css create mode 100644 deps/rcheevos/test/lua/doc/logo.gif create mode 100644 deps/rcheevos/test/lua/doc/lua.1 create mode 100644 deps/rcheevos/test/lua/doc/lua.css create mode 100644 deps/rcheevos/test/lua/doc/luac.1 create mode 100644 deps/rcheevos/test/lua/doc/manual.css create mode 100644 deps/rcheevos/test/lua/doc/manual.html create mode 100644 deps/rcheevos/test/lua/doc/osi-certified-72x60.png create mode 100644 deps/rcheevos/test/lua/doc/readme.html create mode 100644 deps/rcheevos/test/lua/src/Makefile create mode 100644 deps/rcheevos/test/lua/src/lapi.c create mode 100644 deps/rcheevos/test/lua/src/lapi.h create mode 100644 deps/rcheevos/test/lua/src/lauxlib.c create mode 100644 deps/rcheevos/test/lua/src/lauxlib.h create mode 100644 deps/rcheevos/test/lua/src/lbaselib.c create mode 100644 deps/rcheevos/test/lua/src/lbitlib.c create mode 100644 deps/rcheevos/test/lua/src/lcode.c create mode 100644 deps/rcheevos/test/lua/src/lcode.h create mode 100644 deps/rcheevos/test/lua/src/lcorolib.c create mode 100644 deps/rcheevos/test/lua/src/lctype.c create mode 100644 deps/rcheevos/test/lua/src/lctype.h create mode 100644 deps/rcheevos/test/lua/src/ldblib.c create mode 100644 deps/rcheevos/test/lua/src/ldebug.c create mode 100644 deps/rcheevos/test/lua/src/ldebug.h create mode 100644 deps/rcheevos/test/lua/src/ldo.c create mode 100644 deps/rcheevos/test/lua/src/ldo.h create mode 100644 deps/rcheevos/test/lua/src/ldump.c create mode 100644 deps/rcheevos/test/lua/src/lfunc.c create mode 100644 deps/rcheevos/test/lua/src/lfunc.h create mode 100644 deps/rcheevos/test/lua/src/lgc.c create mode 100644 deps/rcheevos/test/lua/src/lgc.h create mode 100644 deps/rcheevos/test/lua/src/linit.c create mode 100644 deps/rcheevos/test/lua/src/liolib.c create mode 100644 deps/rcheevos/test/lua/src/llex.c create mode 100644 deps/rcheevos/test/lua/src/llex.h create mode 100644 deps/rcheevos/test/lua/src/llimits.h create mode 100644 deps/rcheevos/test/lua/src/lmathlib.c create mode 100644 deps/rcheevos/test/lua/src/lmem.c create mode 100644 deps/rcheevos/test/lua/src/lmem.h create mode 100644 deps/rcheevos/test/lua/src/loadlib.c create mode 100644 deps/rcheevos/test/lua/src/lobject.c create mode 100644 deps/rcheevos/test/lua/src/lobject.h create mode 100644 deps/rcheevos/test/lua/src/lopcodes.c create mode 100644 deps/rcheevos/test/lua/src/lopcodes.h create mode 100644 deps/rcheevos/test/lua/src/loslib.c create mode 100644 deps/rcheevos/test/lua/src/lparser.c create mode 100644 deps/rcheevos/test/lua/src/lparser.h create mode 100644 deps/rcheevos/test/lua/src/lprefix.h create mode 100644 deps/rcheevos/test/lua/src/lstate.c create mode 100644 deps/rcheevos/test/lua/src/lstate.h create mode 100644 deps/rcheevos/test/lua/src/lstring.c create mode 100644 deps/rcheevos/test/lua/src/lstring.h create mode 100644 deps/rcheevos/test/lua/src/lstrlib.c create mode 100644 deps/rcheevos/test/lua/src/ltable.c create mode 100644 deps/rcheevos/test/lua/src/ltable.h create mode 100644 deps/rcheevos/test/lua/src/ltablib.c create mode 100644 deps/rcheevos/test/lua/src/ltm.c create mode 100644 deps/rcheevos/test/lua/src/ltm.h create mode 100644 deps/rcheevos/test/lua/src/lua.c create mode 100644 deps/rcheevos/test/lua/src/lua.h create mode 100644 deps/rcheevos/test/lua/src/lua.hpp create mode 100644 deps/rcheevos/test/lua/src/luac.c create mode 100644 deps/rcheevos/test/lua/src/luaconf.h create mode 100644 deps/rcheevos/test/lua/src/lualib.h create mode 100644 deps/rcheevos/test/lua/src/lundump.c create mode 100644 deps/rcheevos/test/lua/src/lundump.h create mode 100644 deps/rcheevos/test/lua/src/lutf8lib.c create mode 100644 deps/rcheevos/test/lua/src/lvm.c create mode 100644 deps/rcheevos/test/lua/src/lvm.h create mode 100644 deps/rcheevos/test/lua/src/lzio.c create mode 100644 deps/rcheevos/test/lua/src/lzio.h create mode 100644 deps/rcheevos/test/rcheevos-test.sln create mode 100644 deps/rcheevos/test/rcheevos-test.vcxproj create mode 100644 deps/rcheevos/test/rcheevos-test.vcxproj.filters diff --git a/deps/rcheevos/include/rcheevos.h b/deps/rcheevos/include/rcheevos.h index 4ccf3c623d..898ed9845d 100644 --- a/deps/rcheevos/include/rcheevos.h +++ b/deps/rcheevos/include/rcheevos.h @@ -29,7 +29,8 @@ enum { RC_MISSING_CANCEL = -14, RC_MISSING_SUBMIT = -15, RC_MISSING_VALUE = -16, - RC_INVALID_LBOARD_FIELD = -17 + RC_INVALID_LBOARD_FIELD = -17, + RC_MISSING_DISPLAY_STRING = -18 }; /*****************************************************************************\ @@ -109,7 +110,8 @@ enum { RC_OPERAND_DELTA, /* The value last known at this address. */ RC_OPERAND_CONST, /* A 32-bit unsigned integer. */ RC_OPERAND_FP, /* A floating point value. */ - RC_OPERAND_LUA /* A Lua function that provides the value. */ + RC_OPERAND_LUA, /* A Lua function that provides the value. */ + RC_OPERAND_PRIOR /* The last differing value at this address. */ }; typedef struct { @@ -118,8 +120,10 @@ typedef struct { struct { /* The memory address or constant value of this variable. */ unsigned value; - /* The previous memory contents if RC_OPERAND_DELTA. */ + /* The previous memory contents if RC_OPERAND_DELTA or RC_OPERAND_PRIOR. */ unsigned previous; + /* The last differing value if RC_OPERAND_PRIOR. */ + unsigned prior; /* The size of the variable. */ char size; @@ -150,7 +154,8 @@ enum { RC_CONDITION_RESET_IF, RC_CONDITION_ADD_SOURCE, RC_CONDITION_SUB_SOURCE, - RC_CONDITION_ADD_HITS + RC_CONDITION_ADD_HITS, + RC_CONDITION_AND_NEXT }; /* operators */ @@ -300,7 +305,7 @@ void rc_reset_lboard(rc_lboard_t* lboard); /* Supported formats. */ enum { - RC_FORMAT_FRAMES = 0, + RC_FORMAT_FRAMES, RC_FORMAT_SECONDS, RC_FORMAT_CENTISECS, RC_FORMAT_SCORE, @@ -309,7 +314,56 @@ enum { }; int rc_parse_format(const char* format_str); -void rc_format_value(char* buffer, int size, unsigned value, int format); +int rc_format_value(char* buffer, int size, unsigned value, int format); + +/*****************************************************************************\ +| Rich Presence | +\*****************************************************************************/ + +typedef struct rc_richpresence_lookup_item_t rc_richpresence_lookup_item_t; + +struct rc_richpresence_lookup_item_t { + unsigned value; + rc_richpresence_lookup_item_t* next_item; + const char* label; +}; + +typedef struct rc_richpresence_lookup_t rc_richpresence_lookup_t; + +struct rc_richpresence_lookup_t { + rc_richpresence_lookup_item_t* first_item; + rc_richpresence_lookup_t* next; + const char* name; + unsigned short format; +}; + +typedef struct rc_richpresence_display_part_t rc_richpresence_display_part_t; + +struct rc_richpresence_display_part_t { + rc_richpresence_display_part_t* next; + const char* text; + rc_richpresence_lookup_item_t* first_lookup_item; + rc_value_t value; + unsigned short display_type; +}; + +typedef struct rc_richpresence_display_t rc_richpresence_display_t; + +struct rc_richpresence_display_t { + rc_trigger_t trigger; + rc_richpresence_display_t* next; + rc_richpresence_display_part_t* display; +}; + +typedef struct { + rc_richpresence_display_t* first_display; + rc_richpresence_lookup_t* first_lookup; +} +rc_richpresence_t; + +int rc_richpresence_size(const char* script); +rc_richpresence_t* rc_parse_richpresence(void* buffer, const char* script, lua_State* L, int funcs_ndx); +int rc_evaluate_richpresence(rc_richpresence_t* richpresence, char* buffer, unsigned buffersize, rc_peek_t peek, void* peek_ud, lua_State* L); #ifdef __cplusplus } diff --git a/deps/rcheevos/src/rcheevos/alloc.c b/deps/rcheevos/src/rcheevos/alloc.c index fb573666b9..09da6e6524 100644 --- a/deps/rcheevos/src/rcheevos/alloc.c +++ b/deps/rcheevos/src/rcheevos/alloc.c @@ -1,5 +1,7 @@ #include "internal.h" +#include + void* rc_alloc(void* pointer, int* offset, int size, int alignment, rc_scratch_t* scratch) { void* ptr; @@ -15,3 +17,15 @@ void* rc_alloc(void* pointer, int* offset, int size, int alignment, rc_scratch_t *offset += size; return ptr; } + +char* rc_alloc_str(void* pointer, int* offset, const char* text, int length) { + char* ptr; + + ptr = (char*)rc_alloc(pointer, offset, length + 1, RC_ALIGNOF(char), 0); + if (ptr) { + memcpy(ptr, text, length); + ptr[length] = '\0'; + } + + return ptr; +} diff --git a/deps/rcheevos/src/rcheevos/condition.c b/deps/rcheevos/src/rcheevos/condition.c index f6f17204eb..d97cb9db59 100644 --- a/deps/rcheevos/src/rcheevos/condition.c +++ b/deps/rcheevos/src/rcheevos/condition.c @@ -18,6 +18,7 @@ rc_condition_t* rc_parse_condition(int* ret, void* buffer, rc_scratch_t* scratch case 'a': case 'A': self->type = RC_CONDITION_ADD_SOURCE; break; case 'b': case 'B': self->type = RC_CONDITION_SUB_SOURCE; break; case 'c': case 'C': self->type = RC_CONDITION_ADD_HITS; break; + case 'n': case 'N': self->type = RC_CONDITION_AND_NEXT; break; default: *ret = RC_INVALID_CONDITION_TYPE; return 0; } diff --git a/deps/rcheevos/src/rcheevos/condset.c b/deps/rcheevos/src/rcheevos/condset.c index 5062bd1490..13d086f937 100644 --- a/deps/rcheevos/src/rcheevos/condset.c +++ b/deps/rcheevos/src/rcheevos/condset.c @@ -13,6 +13,7 @@ static void rc_update_condition_pause(rc_condition_t* condition, int* in_pause) case RC_CONDITION_ADD_SOURCE: case RC_CONDITION_SUB_SOURCE: case RC_CONDITION_ADD_HITS: + case RC_CONDITION_AND_NEXT: condition->pause = *in_pause; break; @@ -61,10 +62,11 @@ rc_condset_t* rc_parse_condset(int* ret, void* buffer, rc_scratch_t* scratch, co static int rc_test_condset_internal(rc_condset_t* self, int processing_pause, int* reset, rc_peek_t peek, void* ud, lua_State* L) { rc_condition_t* condition; - int set_valid, cond_valid; + int set_valid, cond_valid, prev_cond; unsigned add_buffer, add_hits; set_valid = 1; + prev_cond = 1; add_buffer = add_hits = 0; for (condition = self->conditions; condition != 0; condition = condition->next) { @@ -88,13 +90,23 @@ static int rc_test_condset_internal(rc_condset_t* self, int processing_pause, in } } + add_buffer = 0; add_hits += condition->current_hits; continue; + + case RC_CONDITION_AND_NEXT: + prev_cond &= rc_test_condition(condition, add_buffer, peek, ud, L); + add_buffer = 0; + continue; } /* always evaluate the condition to ensure delta values get tracked correctly */ cond_valid = rc_test_condition(condition, add_buffer, peek, ud, L); + /* merge AndNext value and reset it for the next condition */ + cond_valid &= prev_cond; + prev_cond = 1; + /* if the condition has a target hit count that has already been met, it's automatically true, even if not currently true. */ if (condition->required_hits != 0 && (condition->current_hits + add_hits) >= condition->required_hits) { cond_valid = 1; @@ -111,6 +123,7 @@ static int rc_test_condset_internal(rc_condset_t* self, int processing_pause, in } } + /* reset AddHits and AddSource/SubSource values */ add_buffer = add_hits = 0; switch (condition->type) { @@ -141,7 +154,7 @@ static int rc_test_condset_internal(rc_condset_t* self, int processing_pause, in } break; - + default: set_valid &= cond_valid; break; diff --git a/deps/rcheevos/src/rcheevos/format.c b/deps/rcheevos/src/rcheevos/format.c index e9084064c2..e03ced8070 100644 --- a/deps/rcheevos/src/rcheevos/format.c +++ b/deps/rcheevos/src/rcheevos/format.c @@ -64,8 +64,9 @@ int rc_parse_format(const char* format_str) { return RC_FORMAT_VALUE; } -void rc_format_value(char* buffer, int size, unsigned value, int format) { +int rc_format_value(char* buffer, int size, unsigned value, int format) { unsigned a, b, c; + int chars; switch (format) { case RC_FORMAT_FRAMES: @@ -74,13 +75,13 @@ void rc_format_value(char* buffer, int size, unsigned value, int format) { a -= b * 100; c = b / 60; /* minutes */ b -= c * 60; - snprintf(buffer, size, "%02u:%02u.%02u", c, b, a); + chars = snprintf(buffer, size, "%02u:%02u.%02u", c, b, a); break; case RC_FORMAT_SECONDS: a = value / 60; /* minutes */ value -= a * 60; - snprintf(buffer, size, "%02u:%02u", a, value); + chars = snprintf(buffer, size, "%02u:%02u", a, value); break; case RC_FORMAT_CENTISECS: @@ -88,19 +89,22 @@ void rc_format_value(char* buffer, int size, unsigned value, int format) { value -= a * 100; b = a / 60; /* minutes */ a -= b * 60; - snprintf(buffer, size, "%02u:%02u.%02u", b, a, value); + chars = snprintf(buffer, size, "%02u:%02u.%02u", b, a, value); break; case RC_FORMAT_SCORE: - snprintf(buffer, size, "%06u Points", value); + chars = snprintf(buffer, size, "%06u Points", value); break; case RC_FORMAT_VALUE: - snprintf(buffer, size, "%01u", value); + chars = snprintf(buffer, size, "%01u", value); break; case RC_FORMAT_OTHER: default: - snprintf(buffer, size, "%06u", value); + chars = snprintf(buffer, size, "%06u", value); + break; } + + return chars; } diff --git a/deps/rcheevos/src/rcheevos/internal.h b/deps/rcheevos/src/rcheevos/internal.h index 52a3623105..5968aafe6e 100644 --- a/deps/rcheevos/src/rcheevos/internal.h +++ b/deps/rcheevos/src/rcheevos/internal.h @@ -3,8 +3,10 @@ #include "rcheevos.h" +#define RC_TAG2(x,y) x ## y +#define RC_TAG(x,y) RC_TAG2(x,y) #define RC_OFFSETOF(s, f) ((int)(long long)(&((s*)0)->f)) -#define RC_ALIGNOF(t) RC_OFFSETOF(struct{char c; t d;}, d) +#define RC_ALIGNOF(t) RC_OFFSETOF(struct RC_TAG(_unnamed, __LINE__) {char c; t d;}, d) #define RC_ALLOC(t, p, o, s) ((t*)rc_alloc(p, o, sizeof(t), RC_ALIGNOF(t), s)) @@ -16,10 +18,16 @@ typedef union { rc_term_t term; rc_expression_t expression; rc_lboard_t lboard; + rc_richpresence_t richpresence; + rc_richpresence_display_t richpresence_display; + rc_richpresence_display_part_t richpresence_part; + rc_richpresence_lookup_t richpresence_lookup; + rc_richpresence_lookup_item_t richpresence_lookup_item; } rc_scratch_t; void* rc_alloc(void* pointer, int* offset, int size, int alignment, rc_scratch_t* scratch); +char* rc_alloc_str(void* pointer, int* offset, const char* text, int length); void rc_parse_trigger_internal(rc_trigger_t* self, int* ret, void* buffer, rc_scratch_t* scratch, const char** memaddr, lua_State* L, int funcs_ndx); @@ -43,4 +51,7 @@ void rc_parse_value_internal(rc_value_t* self, int* ret, void* buffer, void* scr void rc_parse_lboard_internal(rc_lboard_t* self, int* ret, void* buffer, void* scratch, const char* memaddr, lua_State* L, int funcs_ndx); +const char* rc_parse_line(const char* line, const char** end); +void rc_parse_richpresence_internal(rc_richpresence_t* self, int* ret, void* buffer, void* scratch, const char* script, lua_State* L, int funcs_ndx); + #endif /* INTERNAL_H */ diff --git a/deps/rcheevos/src/rcheevos/operand.c b/deps/rcheevos/src/rcheevos/operand.c index 1e760daa16..941ab75f24 100644 --- a/deps/rcheevos/src/rcheevos/operand.c +++ b/deps/rcheevos/src/rcheevos/operand.c @@ -76,6 +76,10 @@ static int rc_parse_operand_memory(rc_operand_t* self, const char** memaddr) { self->is_bcd = 1; break; + case 'p': case 'P': + self->type = RC_OPERAND_PRIOR; + break; + default: self->type = RC_OPERAND_ADDRESS; aux--; @@ -256,6 +260,7 @@ static int rc_parse_operand_term(rc_operand_t* self, const char** memaddr, lua_S } /* fall through */ + case '.': case '+': case '-': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': @@ -287,6 +292,7 @@ int rc_parse_operand(rc_operand_t* self, const char** memaddr, int is_trigger, l self->size = RC_OPERAND_8_BITS; self->is_bcd = 0; self->previous = 0; + self->prior = 0; if (is_trigger) { return rc_parse_operand_trigger(self, memaddr, L, funcs_ndx); @@ -363,6 +369,7 @@ unsigned rc_evaluate_operand(rc_operand_t* self, rc_peek_t peek, void* ud, lua_S case RC_OPERAND_ADDRESS: case RC_OPERAND_DELTA: + case RC_OPERAND_PRIOR: switch (self->size) { case RC_OPERAND_BIT_0: value = (peek(self->value, 1, ud) >> 0) & 1; @@ -460,6 +467,12 @@ unsigned rc_evaluate_operand(rc_operand_t* self, rc_peek_t peek, void* ud, lua_S unsigned previous = self->previous; self->previous = value; value = previous; + } else if (self->type == RC_OPERAND_PRIOR) { + if (self->previous != value) { + self->prior = self->previous; + self->previous = value; + } + value = self->prior; } break; diff --git a/deps/rcheevos/src/rcheevos/richpresence.c b/deps/rcheevos/src/rcheevos/richpresence.c new file mode 100644 index 0000000000..910e66afe9 --- /dev/null +++ b/deps/rcheevos/src/rcheevos/richpresence.c @@ -0,0 +1,418 @@ +#include "internal.h" + +#include +#include +#include +#include + +/* special formats only used by rc_richpresence_display_part_t.display_type. must not overlap other RC_FORMAT values */ +enum { + RC_FORMAT_STRING = 101, + RC_FORMAT_LOOKUP = 102 +}; + +const char* rc_parse_line(const char* line, const char** end) { + const char* nextline; + const char* endline; + + /* get a single line */ + nextline = line; + while (*nextline && *nextline != '\n') + ++nextline; + + /* find a trailing comment marker (//) */ + endline = line; + while (endline < nextline && (endline[0] != '/' || endline[1] != '/' || (endline > line && endline[-1] == '\\'))) + ++endline; + + /* remove trailing whitespace */ + if (endline == nextline) { + if (endline > line && endline[-1] == '\r') + --endline; + } else { + while (endline > line && isspace(endline[-1])) + --endline; + } + + /* end is pointing at the first character to ignore - makes subtraction for length easier */ + *end = endline; + + if (*nextline == '\n') + ++nextline; + return nextline; +} + +rc_richpresence_display_t* rc_parse_richpresence_display_internal(void* buffer, int* ret, rc_scratch_t* scratch, const char* line, const char* endline, lua_State* L, int funcs_ndx, rc_richpresence_t* richpresence) { + rc_richpresence_display_t* self; + rc_richpresence_display_part_t* part; + rc_richpresence_display_part_t** next; + rc_richpresence_lookup_t* lookup; + const char* ptr; + const char* in; + char* out; + + if (endline - line < 1) + return 0; + + { + self = RC_ALLOC(rc_richpresence_display_t, buffer, ret, scratch); + memset(self, 0, sizeof(rc_richpresence_display_t)); + next = &self->display; + } + + /* break the string up on macros: text @macro() moretext */ + do { + ptr = line; + while (ptr < endline) { + if (*ptr == '@' && (ptr == line || ptr[-1] != '\\')) /* ignore escaped @s */ + break; + + ++ptr; + } + + if (ptr > line) { + part = RC_ALLOC(rc_richpresence_display_part_t, buffer, ret, scratch); + memset(part, 0, sizeof(rc_richpresence_display_part_t)); + *next = part; + next = &part->next; + + /* handle string part */ + part->display_type = RC_FORMAT_STRING; + part->text = rc_alloc_str(buffer, ret, line, ptr - line); + if (part->text) { + /* remove backslashes used for escaping */ + in = part->text; + while (*in && *in != '\\') + ++in; + + if (*in == '\\') { + out = (char*)in++; + while (*in) { + *out++ = *in++; + if (*in == '\\') + ++in; + } + *out = '\0'; + } + } + } + + if (*ptr == '@') { + /* handle macro part */ + line = ++ptr; + while (ptr < endline && *ptr != '(') + ++ptr; + + if (ptr > line) { + if (!buffer) { + /* just calculating size, can't confirm lookup exists */ + part = RC_ALLOC(rc_richpresence_display_part_t, buffer, ret, scratch); + + line = ++ptr; + while (ptr < endline && *ptr != ')') + ++ptr; + if (*ptr == ')') { + rc_parse_value_internal(&part->value, ret, buffer, scratch, &line, L, funcs_ndx); + if (ret < 0) + return 0; + ++ptr; + } + + } else { + /* find the lookup and hook it up */ + lookup = richpresence->first_lookup; + while (lookup) { + if (strncmp(lookup->name, line, ptr - line) == 0 && lookup->name[ptr - line] == '\0') { + part = RC_ALLOC(rc_richpresence_display_part_t, buffer, ret, scratch); + *next = part; + next = &part->next; + + part->text = lookup->name; + part->first_lookup_item = lookup->first_item; + part->display_type = lookup->format; + + line = ++ptr; + while (ptr < endline && *ptr != ')') + ++ptr; + if (*ptr == ')') { + rc_parse_value_internal(&part->value, ret, buffer, scratch, &line, L, funcs_ndx); + if (ret < 0) + return 0; + ++ptr; + } + + break; + } + + lookup = lookup->next; + } + + if (!lookup) { + part = RC_ALLOC(rc_richpresence_display_part_t, buffer, ret, scratch); + memset(part, 0, sizeof(rc_richpresence_display_part_t)); + *next = part; + next = &part->next; + + ptr = line; + + part->display_type = RC_FORMAT_STRING; + part->text = rc_alloc_str(buffer, ret, "[Unknown macro]", 15); + } + } + } + } + + line = ptr; + } while (line < endline); + + *next = 0; + + return self; +} + +const char* rc_parse_richpresence_lookup(rc_richpresence_lookup_t* lookup, const char* nextline, int* ret, void* buffer, void* scratch, lua_State* L, int funcs_ndx) +{ + rc_richpresence_lookup_item_t** next; + rc_richpresence_lookup_item_t* item; + char number[64]; + const char* line; + const char* endline; + const char* defaultlabel = 0; + unsigned key; + int chars; + + next = &lookup->first_item; + + do + { + line = nextline; + nextline = rc_parse_line(line, &endline); + + if (endline - line < 2) + break; + + chars = 0; + while (chars < (sizeof(number) - 1) && line + chars < endline && line[chars] != '=') { + number[chars] = line[chars]; + ++chars; + } + number[chars] = '\0'; + + if (line[chars] == '=') { + line += chars + 1; + + if (chars == 1 && number[0] == '*') { + defaultlabel = rc_alloc_str(buffer, ret, line, endline - line); + continue; + } + + if (number[0] == '0' && number[1] == 'x') + key = strtoul(&number[2], 0, 16); + else + key = strtoul(&number[0], 0, 10); + + item = RC_ALLOC(rc_richpresence_lookup_item_t, buffer, ret, scratch); + item->value = key; + item->label = rc_alloc_str(buffer, ret, line, endline - line); + *next = item; + next = &item->next_item; + } + } while (1); + + if (!defaultlabel) + defaultlabel = rc_alloc_str(buffer, ret, "", 0); + + item = RC_ALLOC(rc_richpresence_lookup_item_t, buffer, ret, scratch); + item->value = 0; + item->label = defaultlabel; + item->next_item = 0; + *next = item; + + return nextline; +} + +void rc_parse_richpresence_internal(rc_richpresence_t* self, int* ret, void* buffer, void* scratch, const char* script, lua_State* L, int funcs_ndx) { + rc_richpresence_display_t** nextdisplay; + rc_richpresence_lookup_t** nextlookup; + rc_richpresence_lookup_t* lookup; + char format[64]; + const char* display = 0; + const char* line; + const char* nextline; + const char* endline; + const char* ptr; + int hasdisplay = 0; + int chars; + + nextlookup = &self->first_lookup; + + /* first pass: process macro initializers */ + line = script; + while (*line) + { + nextline = rc_parse_line(line, &endline); + if (strncmp(line, "Lookup:", 7) == 0) { + line += 7; + + lookup = RC_ALLOC(rc_richpresence_lookup_t, buffer, ret, scratch); + lookup->name = rc_alloc_str(buffer, ret, line, endline - line); + lookup->format = RC_FORMAT_LOOKUP; + *nextlookup = lookup; + nextlookup = &lookup->next; + + nextline = rc_parse_richpresence_lookup(lookup, nextline, ret, buffer, scratch, L, funcs_ndx); + + } else if (strncmp(line, "Format:", 7) == 0) { + line += 7; + + lookup = RC_ALLOC(rc_richpresence_lookup_t, buffer, ret, scratch); + lookup->name = rc_alloc_str(buffer, ret, line, endline - line); + lookup->first_item = 0; + *nextlookup = lookup; + nextlookup = &lookup->next; + + line = nextline; + nextline = rc_parse_line(line, &endline); + if (buffer && strncmp(line, "FormatType=", 11) == 0) { + line += 11; + + chars = endline - line; + if (chars > 63) + chars = 63; + memcpy(format, line, chars); + format[chars] = '\0'; + + lookup->format = rc_parse_format(format); + } else { + lookup->format = RC_FORMAT_VALUE; + } + } else if (strncmp(line, "Display:", 8) == 0) { + display = nextline; + + do { + line = nextline; + nextline = rc_parse_line(line, &endline); + } while (*line == '?'); + } + + line = nextline; + } + + *nextlookup = 0; + nextdisplay = &self->first_display; + + /* second pass, process display string*/ + if (display) { + line = display; + nextline = rc_parse_line(line, &endline); + + while (*line == '?') { + /* conditional display: ?trigger?string */ + ptr = ++line; + while (ptr < endline && *ptr != '?') + ++ptr; + + if (ptr < endline) { + *nextdisplay = rc_parse_richpresence_display_internal(buffer, ret, scratch, ptr + 1, endline, L, funcs_ndx, self); + rc_parse_trigger_internal(&((*nextdisplay)->trigger), ret, buffer, scratch, &line, L, funcs_ndx); + if (*ret < 0) + return; + if (buffer) + nextdisplay = &((*nextdisplay)->next); + } + + line = nextline; + nextline = rc_parse_line(line, &endline); + } + + /* non-conditional display: string */ + *nextdisplay = rc_parse_richpresence_display_internal(buffer, ret, scratch, line, endline, L, funcs_ndx, self); + hasdisplay = (*nextdisplay != NULL); + if (buffer) + nextdisplay = &((*nextdisplay)->next); + } + + /* finalize */ + *nextdisplay = 0; + + if (!hasdisplay && ret > 0) + *ret = RC_MISSING_DISPLAY_STRING; +} + +int rc_richpresence_size(const char* script) { + int ret; + rc_richpresence_t* self; + rc_scratch_t scratch; + + ret = 0; + self = RC_ALLOC(rc_richpresence_t, 0, &ret, &scratch); + rc_parse_richpresence_internal(self, &ret, 0, &scratch, script, 0, 0); + return ret; +} + +rc_richpresence_t* rc_parse_richpresence(void* buffer, const char* script, lua_State* L, int funcs_ndx) { + int ret; + rc_richpresence_t* self; + rc_scratch_t scratch; + + ret = 0; + self = RC_ALLOC(rc_richpresence_t, buffer, &ret, &scratch); + rc_parse_richpresence_internal(self, &ret, buffer, 0, script, L, funcs_ndx); + return ret >= 0 ? self : 0; +} + +int rc_evaluate_richpresence(rc_richpresence_t* richpresence, char* buffer, unsigned buffersize, rc_peek_t peek, void* peek_ud, lua_State* L) { + rc_richpresence_display_t* display; + rc_richpresence_display_part_t* part; + rc_richpresence_lookup_item_t* item; + char* ptr; + int chars; + unsigned value; + + ptr = buffer; + display = richpresence->first_display; + while (display) { + if (!display->next || rc_test_trigger(&display->trigger, peek, peek_ud, L)) { + part = display->display; + while (part) { + switch (part->display_type) { + case RC_FORMAT_STRING: + chars = snprintf(ptr, buffersize, "%s", part->text); + break; + + case RC_FORMAT_LOOKUP: + value = rc_evaluate_value(&part->value, peek, peek_ud, L); + item = part->first_lookup_item; + if (!item) { + chars = 0; + } else { + while (item->next_item && item->value != value) + item = item->next_item; + + chars = snprintf(ptr, buffersize, "%s", item->label); + } + break; + + default: + value = rc_evaluate_value(&part->value, peek, peek_ud, L); + chars = rc_format_value(ptr, buffersize, value, part->display_type); + break; + } + + if (chars > 0) { + ptr += chars; + buffersize -= chars; + } + + part = part->next; + } + + return (ptr - buffer); + } + + display = display->next; + } + + buffer[0] = '\0'; + return 0; +} diff --git a/deps/rcheevos/src/rcheevos/trigger.c b/deps/rcheevos/src/rcheevos/trigger.c index bbc6cae080..77113938af 100644 --- a/deps/rcheevos/src/rcheevos/trigger.c +++ b/deps/rcheevos/src/rcheevos/trigger.c @@ -18,6 +18,8 @@ void rc_parse_trigger_internal(rc_trigger_t* self, int* ret, void* buffer, rc_sc if (*ret < 0) { return; } + + self->requirement->next = 0; } while (*aux == 's' || *aux == 'S') { diff --git a/deps/rcheevos/test/Makefile b/deps/rcheevos/test/Makefile index 3900938851..4dc28dd152 100644 --- a/deps/rcheevos/test/Makefile +++ b/deps/rcheevos/test/Makefile @@ -4,7 +4,7 @@ LUA_SRC=lua/src OBJ=$(RC_SRC)/trigger.o $(RC_SRC)/condset.o $(RC_SRC)/condition.o $(RC_SRC)/operand.o \ $(RC_SRC)/term.o $(RC_SRC)/expression.o $(RC_SRC)/value.o $(RC_SRC)/lboard.o \ - $(RC_SRC)/alloc.o $(RC_SRC)/format.o \ + $(RC_SRC)/alloc.o $(RC_SRC)/format.o $(RC_SRC)/richpresence.o \ $(RC_URL_SRC)/url.o \ $(LUA_SRC)/lapi.o $(LUA_SRC)/lcode.o $(LUA_SRC)/lctype.o $(LUA_SRC)/ldebug.o \ $(LUA_SRC)/ldo.o $(LUA_SRC)/ldump.o $(LUA_SRC)/lfunc.o $(LUA_SRC)/lgc.o $(LUA_SRC)/llex.o \ diff --git a/deps/rcheevos/test/lua/Makefile b/deps/rcheevos/test/lua/Makefile new file mode 100644 index 0000000000..119110d2f0 --- /dev/null +++ b/deps/rcheevos/test/lua/Makefile @@ -0,0 +1,114 @@ +# Makefile for installing Lua +# See doc/readme.html for installation and customization instructions. + +# == CHANGE THE SETTINGS BELOW TO SUIT YOUR ENVIRONMENT ======================= + +# Your platform. See PLATS for possible values. +PLAT= none + +# Where to install. The installation starts in the src and doc directories, +# so take care if INSTALL_TOP is not an absolute path. See the local target. +# You may want to make INSTALL_LMOD and INSTALL_CMOD consistent with +# LUA_ROOT, LUA_LDIR, and LUA_CDIR in luaconf.h. +INSTALL_TOP= /usr/local +INSTALL_BIN= $(INSTALL_TOP)/bin +INSTALL_INC= $(INSTALL_TOP)/include +INSTALL_LIB= $(INSTALL_TOP)/lib +INSTALL_MAN= $(INSTALL_TOP)/man/man1 +INSTALL_LMOD= $(INSTALL_TOP)/share/lua/$V +INSTALL_CMOD= $(INSTALL_TOP)/lib/lua/$V + +# How to install. If your install program does not support "-p", then +# you may have to run ranlib on the installed liblua.a. +INSTALL= install -p +INSTALL_EXEC= $(INSTALL) -m 0755 +INSTALL_DATA= $(INSTALL) -m 0644 +# +# If you don't have "install" you can use "cp" instead. +# INSTALL= cp -p +# INSTALL_EXEC= $(INSTALL) +# INSTALL_DATA= $(INSTALL) + +# Other utilities. +MKDIR= mkdir -p +RM= rm -f + +# == END OF USER SETTINGS -- NO NEED TO CHANGE ANYTHING BELOW THIS LINE ======= + +# Convenience platforms targets. +PLATS= aix bsd c89 freebsd generic linux macosx mingw posix solaris + +# What to install. +TO_BIN= lua luac +TO_INC= lua.h luaconf.h lualib.h lauxlib.h lua.hpp +TO_LIB= liblua.a +TO_MAN= lua.1 luac.1 + +# Lua version and release. +V= 5.3 +R= $V.4 + +# Targets start here. +all: $(PLAT) + +$(PLATS) clean: + cd src && $(MAKE) $@ + +test: dummy + src/lua -v + +install: dummy + cd src && $(MKDIR) $(INSTALL_BIN) $(INSTALL_INC) $(INSTALL_LIB) $(INSTALL_MAN) $(INSTALL_LMOD) $(INSTALL_CMOD) + cd src && $(INSTALL_EXEC) $(TO_BIN) $(INSTALL_BIN) + cd src && $(INSTALL_DATA) $(TO_INC) $(INSTALL_INC) + cd src && $(INSTALL_DATA) $(TO_LIB) $(INSTALL_LIB) + cd doc && $(INSTALL_DATA) $(TO_MAN) $(INSTALL_MAN) + +uninstall: + cd src && cd $(INSTALL_BIN) && $(RM) $(TO_BIN) + cd src && cd $(INSTALL_INC) && $(RM) $(TO_INC) + cd src && cd $(INSTALL_LIB) && $(RM) $(TO_LIB) + cd doc && cd $(INSTALL_MAN) && $(RM) $(TO_MAN) + +local: + $(MAKE) install INSTALL_TOP=../install + +none: + @echo "Please do 'make PLATFORM' where PLATFORM is one of these:" + @echo " $(PLATS)" + @echo "See doc/readme.html for complete instructions." + +# make may get confused with test/ and install/ +dummy: + +# echo config parameters +echo: + @cd src && $(MAKE) -s echo + @echo "PLAT= $(PLAT)" + @echo "V= $V" + @echo "R= $R" + @echo "TO_BIN= $(TO_BIN)" + @echo "TO_INC= $(TO_INC)" + @echo "TO_LIB= $(TO_LIB)" + @echo "TO_MAN= $(TO_MAN)" + @echo "INSTALL_TOP= $(INSTALL_TOP)" + @echo "INSTALL_BIN= $(INSTALL_BIN)" + @echo "INSTALL_INC= $(INSTALL_INC)" + @echo "INSTALL_LIB= $(INSTALL_LIB)" + @echo "INSTALL_MAN= $(INSTALL_MAN)" + @echo "INSTALL_LMOD= $(INSTALL_LMOD)" + @echo "INSTALL_CMOD= $(INSTALL_CMOD)" + @echo "INSTALL_EXEC= $(INSTALL_EXEC)" + @echo "INSTALL_DATA= $(INSTALL_DATA)" + +# echo pkg-config data +pc: + @echo "version=$R" + @echo "prefix=$(INSTALL_TOP)" + @echo "libdir=$(INSTALL_LIB)" + @echo "includedir=$(INSTALL_INC)" + +# list targets that do not create files (but not all makes understand .PHONY) +.PHONY: all $(PLATS) clean test install local none dummy echo pecho lecho + +# (end of Makefile) diff --git a/deps/rcheevos/test/lua/README b/deps/rcheevos/test/lua/README new file mode 100644 index 0000000000..0b31908a06 --- /dev/null +++ b/deps/rcheevos/test/lua/README @@ -0,0 +1,6 @@ + +This is Lua 5.3.4, released on 12 Jan 2017. + +For installation instructions, license details, and +further information about Lua, see doc/readme.html. + diff --git a/deps/rcheevos/test/lua/doc/contents.html b/deps/rcheevos/test/lua/doc/contents.html new file mode 100644 index 0000000000..445556f964 --- /dev/null +++ b/deps/rcheevos/test/lua/doc/contents.html @@ -0,0 +1,619 @@ + + + +Lua 5.3 Reference Manual - contents + + + + + + + +

+Lua +Lua 5.3 Reference Manual +

+ +

+The reference manual is the official definition of the Lua language. +
+For a complete introduction to Lua programming, see the book +Programming in Lua. + +

+start +· +contents +· +index +· +other versions +
+ +

+ +Copyright © 2015–2017 Lua.org, PUC-Rio. +Freely available under the terms of the +Lua license. + + +

Contents

+ + +

Index

+ + + + + + + +
+

Lua functions

+

+basic
+_G
+_VERSION
+assert
+collectgarbage
+dofile
+error
+getmetatable
+ipairs
+load
+loadfile
+next
+pairs
+pcall
+print
+rawequal
+rawget
+rawlen
+rawset
+require
+select
+setmetatable
+tonumber
+tostring
+type
+xpcall
+ +

+coroutine
+coroutine.create
+coroutine.isyieldable
+coroutine.resume
+coroutine.running
+coroutine.status
+coroutine.wrap
+coroutine.yield
+ +

+debug
+debug.debug
+debug.gethook
+debug.getinfo
+debug.getlocal
+debug.getmetatable
+debug.getregistry
+debug.getupvalue
+debug.getuservalue
+debug.sethook
+debug.setlocal
+debug.setmetatable
+debug.setupvalue
+debug.setuservalue
+debug.traceback
+debug.upvalueid
+debug.upvaluejoin
+ +

+io
+io.close
+io.flush
+io.input
+io.lines
+io.open
+io.output
+io.popen
+io.read
+io.stderr
+io.stdin
+io.stdout
+io.tmpfile
+io.type
+io.write
+ +file:close
+file:flush
+file:lines
+file:read
+file:seek
+file:setvbuf
+file:write
+ +

 +

 

+

+math
+math.abs
+math.acos
+math.asin
+math.atan
+math.ceil
+math.cos
+math.deg
+math.exp
+math.floor
+math.fmod
+math.huge
+math.log
+math.max
+math.maxinteger
+math.min
+math.mininteger
+math.modf
+math.pi
+math.rad
+math.random
+math.randomseed
+math.sin
+math.sqrt
+math.tan
+math.tointeger
+math.type
+math.ult
+ +

+os
+os.clock
+os.date
+os.difftime
+os.execute
+os.exit
+os.getenv
+os.remove
+os.rename
+os.setlocale
+os.time
+os.tmpname
+ +

+package
+package.config
+package.cpath
+package.loaded
+package.loadlib
+package.path
+package.preload
+package.searchers
+package.searchpath
+ +

+string
+string.byte
+string.char
+string.dump
+string.find
+string.format
+string.gmatch
+string.gsub
+string.len
+string.lower
+string.match
+string.pack
+string.packsize
+string.rep
+string.reverse
+string.sub
+string.unpack
+string.upper
+ +

+table
+table.concat
+table.insert
+table.move
+table.pack
+table.remove
+table.sort
+table.unpack
+ +

+utf8
+utf8.char
+utf8.charpattern
+utf8.codepoint
+utf8.codes
+utf8.len
+utf8.offset
+ +

environment
variables

+

+LUA_CPATH
+LUA_CPATH_5_3
+LUA_INIT
+LUA_INIT_5_3
+LUA_PATH
+LUA_PATH_5_3
+ +

 +

C API

+

+lua_Alloc
+lua_CFunction
+lua_Debug
+lua_Hook
+lua_Integer
+lua_KContext
+lua_KFunction
+lua_Number
+lua_Reader
+lua_State
+lua_Unsigned
+lua_Writer
+ +

+lua_absindex
+lua_arith
+lua_atpanic
+lua_call
+lua_callk
+lua_checkstack
+lua_close
+lua_compare
+lua_concat
+lua_copy
+lua_createtable
+lua_dump
+lua_error
+lua_gc
+lua_getallocf
+lua_getextraspace
+lua_getfield
+lua_getglobal
+lua_gethook
+lua_gethookcount
+lua_gethookmask
+lua_geti
+lua_getinfo
+lua_getlocal
+lua_getmetatable
+lua_getstack
+lua_gettable
+lua_gettop
+lua_getupvalue
+lua_getuservalue
+lua_insert
+lua_isboolean
+lua_iscfunction
+lua_isfunction
+lua_isinteger
+lua_islightuserdata
+lua_isnil
+lua_isnone
+lua_isnoneornil
+lua_isnumber
+lua_isstring
+lua_istable
+lua_isthread
+lua_isuserdata
+lua_isyieldable
+lua_len
+lua_load
+lua_newstate
+lua_newtable
+lua_newthread
+lua_newuserdata
+lua_next
+lua_numbertointeger
+lua_pcall
+lua_pcallk
+lua_pop
+lua_pushboolean
+lua_pushcclosure
+lua_pushcfunction
+lua_pushfstring
+lua_pushglobaltable
+lua_pushinteger
+lua_pushlightuserdata
+lua_pushliteral
+lua_pushlstring
+lua_pushnil
+lua_pushnumber
+lua_pushstring
+lua_pushthread
+lua_pushvalue
+lua_pushvfstring
+lua_rawequal
+lua_rawget
+lua_rawgeti
+lua_rawgetp
+lua_rawlen
+lua_rawset
+lua_rawseti
+lua_rawsetp
+lua_register
+lua_remove
+lua_replace
+lua_resume
+lua_rotate
+lua_setallocf
+lua_setfield
+lua_setglobal
+lua_sethook
+lua_seti
+lua_setlocal
+lua_setmetatable
+lua_settable
+lua_settop
+lua_setupvalue
+lua_setuservalue
+lua_status
+lua_stringtonumber
+lua_toboolean
+lua_tocfunction
+lua_tointeger
+lua_tointegerx
+lua_tolstring
+lua_tonumber
+lua_tonumberx
+lua_topointer
+lua_tostring
+lua_tothread
+lua_touserdata
+lua_type
+lua_typename
+lua_upvalueid
+lua_upvalueindex
+lua_upvaluejoin
+lua_version
+lua_xmove
+lua_yield
+lua_yieldk
+ +

 +

auxiliary library

+

+luaL_Buffer
+luaL_Reg
+luaL_Stream
+ +

+luaL_addchar
+luaL_addlstring
+luaL_addsize
+luaL_addstring
+luaL_addvalue
+luaL_argcheck
+luaL_argerror
+luaL_buffinit
+luaL_buffinitsize
+luaL_callmeta
+luaL_checkany
+luaL_checkinteger
+luaL_checklstring
+luaL_checknumber
+luaL_checkoption
+luaL_checkstack
+luaL_checkstring
+luaL_checktype
+luaL_checkudata
+luaL_checkversion
+luaL_dofile
+luaL_dostring
+luaL_error
+luaL_execresult
+luaL_fileresult
+luaL_getmetafield
+luaL_getmetatable
+luaL_getsubtable
+luaL_gsub
+luaL_len
+luaL_loadbuffer
+luaL_loadbufferx
+luaL_loadfile
+luaL_loadfilex
+luaL_loadstring
+luaL_newlib
+luaL_newlibtable
+luaL_newmetatable
+luaL_newstate
+luaL_openlibs
+luaL_opt
+luaL_optinteger
+luaL_optlstring
+luaL_optnumber
+luaL_optstring
+luaL_prepbuffer
+luaL_prepbuffsize
+luaL_pushresult
+luaL_pushresultsize
+luaL_ref
+luaL_requiref
+luaL_setfuncs
+luaL_setmetatable
+luaL_testudata
+luaL_tolstring
+luaL_traceback
+luaL_typename
+luaL_unref
+luaL_where
+ +

standard library

+

+luaopen_base
+luaopen_coroutine
+luaopen_debug
+luaopen_io
+luaopen_math
+luaopen_os
+luaopen_package
+luaopen_string
+luaopen_table
+luaopen_utf8
+ +

constants

+

+LUA_ERRERR
+LUA_ERRFILE
+LUA_ERRGCMM
+LUA_ERRMEM
+LUA_ERRRUN
+LUA_ERRSYNTAX
+LUA_HOOKCALL
+LUA_HOOKCOUNT
+LUA_HOOKLINE
+LUA_HOOKRET
+LUA_HOOKTAILCALL
+LUA_MASKCALL
+LUA_MASKCOUNT
+LUA_MASKLINE
+LUA_MASKRET
+LUA_MAXINTEGER
+LUA_MININTEGER
+LUA_MINSTACK
+LUA_MULTRET
+LUA_NOREF
+LUA_OK
+LUA_OPADD
+LUA_OPBAND
+LUA_OPBNOT
+LUA_OPBOR
+LUA_OPBXOR
+LUA_OPDIV
+LUA_OPEQ
+LUA_OPIDIV
+LUA_OPLE
+LUA_OPLT
+LUA_OPMOD
+LUA_OPMUL
+LUA_OPPOW
+LUA_OPSHL
+LUA_OPSHR
+LUA_OPSUB
+LUA_OPUNM
+LUA_REFNIL
+LUA_REGISTRYINDEX
+LUA_RIDX_GLOBALS
+LUA_RIDX_MAINTHREAD
+LUA_TBOOLEAN
+LUA_TFUNCTION
+LUA_TLIGHTUSERDATA
+LUA_TNIL
+LUA_TNONE
+LUA_TNUMBER
+LUA_TSTRING
+LUA_TTABLE
+LUA_TTHREAD
+LUA_TUSERDATA
+LUA_USE_APICHECK
+LUA_YIELD
+LUAL_BUFFERSIZE
+ +

+ +

+Last update: +Thu Dec 22 18:29:39 BRST 2016 +

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NAME +lua \- Lua interpreter +.SH SYNOPSIS +.B lua +[ +.I options +] +[ +.I script +[ +.I args +] +] +.SH DESCRIPTION +.B lua +is the standalone Lua interpreter. +It loads and executes Lua programs, +either in textual source form or +in precompiled binary form. +(Precompiled binaries are output by +.BR luac , +the Lua compiler.) +.B lua +can be used as a batch interpreter and also interactively. +.LP +The given +.I options +are handled in order and then +the Lua program in file +.I script +is loaded and executed. +The given +.I args +are available to +.I script +as strings in a global table named +.BR arg . +If no options or arguments are given, +then +.B "\-v \-i" +is assumed when the standard input is a terminal; +otherwise, +.B "\-" +is assumed. +.LP +In interactive mode, +.B lua +prompts the user, +reads lines from the standard input, +and executes them as they are read. +If the line contains an expression or list of expressions, +then the line is evaluated and the results are printed. +If a line does not contain a complete statement, +then a secondary prompt is displayed and +lines are read until a complete statement is formed or +a syntax error is found. +.LP +At the very start, +before even handling the command line, +.B lua +checks the contents of the environment variables +.B LUA_INIT_5_3 +or +.BR LUA_INIT , +in that order. +If the contents is of the form +.RI '@ filename ', +then +.I filename +is executed. +Otherwise, the string is assumed to be a Lua statement and is executed. +.SH OPTIONS +.TP +.BI \-e " stat" +execute statement +.IR stat . +.TP +.B \-i +enter interactive mode after executing +.IR script . +.TP +.BI \-l " name" +execute the equivalent of +.IB name =require(' name ') +before executing +.IR script . +.TP +.B \-v +show version information. +.TP +.B \-E +ignore environment variables. +.TP +.B \-\- +stop handling options. +.TP +.B \- +stop handling options and execute the standard input as a file. +.SH "SEE ALSO" +.BR luac (1) +.br +The documentation at lua.org, +especially section 7 of the reference manual. +.SH DIAGNOSTICS +Error messages should be self explanatory. +.SH AUTHORS +R. Ierusalimschy, +L. H. de Figueiredo, +W. Celes +.\" EOF diff --git a/deps/rcheevos/test/lua/doc/lua.css b/deps/rcheevos/test/lua/doc/lua.css new file mode 100644 index 0000000000..5bedf7eb89 --- /dev/null +++ b/deps/rcheevos/test/lua/doc/lua.css @@ -0,0 +1,164 @@ +html { + background-color: #F8F8F8 ; +} + +body { + background-color: #FFFFFF ; + color: #000000 ; + font-family: Helvetica, Arial, sans-serif ; + text-align: justify ; + line-height: 1.25 ; + margin: 16px auto ; + padding: 32px ; + border: solid #a0a0a0 1px ; + border-radius: 20px ; + max-width: 70em ; + width: 90% ; +} + +h1, h2, h3, h4 { + color: #000080 ; + font-family: Verdana, Geneva, sans-serif ; + font-weight: normal ; + font-style: normal ; + text-align: left ; +} + +h1 { + font-size: 28pt ; +} + +h1 img { + vertical-align: text-bottom ; +} + +h2:before { + content: "\2756" ; + padding-right: 0.5em ; +} + +a { + text-decoration: none ; +} + +a:link { + color: #000080 ; +} + +a:link:hover, a:visited:hover { + background-color: #D0D0FF ; + color: #000080 ; + border-radius: 4px ; +} + +a:link:active, a:visited:active { + color: #FF0000 ; +} + +div.menubar { + padding-bottom: 0.5em ; +} + +p.menubar { + margin-left: 2.5em ; +} + +.menubar a:hover { + margin: -3px -3px -3px -3px ; + padding: 3px 3px 3px 3px ; + border-radius: 4px ; +} + +:target { + background-color: #F0F0F0 ; + margin: -8px ; + padding: 8px ; + border-radius: 8px ; + outline: none ; +} + +hr { + display: none ; +} + +table hr { + background-color: #a0a0a0 ; + color: #a0a0a0 ; + border: 0 ; + height: 1px ; + display: block ; +} + +.footer { + color: gray ; + font-size: x-small ; + text-transform: lowercase ; +} + +input[type=text] { + border: solid #a0a0a0 2px ; + border-radius: 2em ; + background-image: url('images/search.png') ; + background-repeat: no-repeat ; + background-position: 4px center ; + padding-left: 20px ; + height: 2em ; +} + +pre.session { + background-color: #F8F8F8 ; + padding: 1em ; + border-radius: 8px ; +} + +td.gutter { + width: 4% ; +} + +table.columns { + border: none ; + border-spacing: 0 ; + border-collapse: collapse ; +} + +table.columns td { + vertical-align: top ; + padding: 0 ; + padding-bottom: 1em ; + text-align: justify ; + line-height: 1.25 ; +} + +p.logos a:link:hover, p.logos a:visited:hover { + background-color: inherit ; +} + +table.book { + border: none ; + border-spacing: 0 ; + border-collapse: collapse ; +} + +table.book td { + padding: 0 ; + vertical-align: top ; +} + +table.book td.cover { + padding-right: 1em ; +} + +table.book img { + border: solid #000080 1px ; +} + +table.book span { + font-size: small ; + text-align: left ; + display: block ; + margin-top: 0.25em ; +} + +img { + background-color: white ; +} diff --git a/deps/rcheevos/test/lua/doc/luac.1 b/deps/rcheevos/test/lua/doc/luac.1 new file mode 100644 index 0000000000..33a4ed00ac --- /dev/null +++ b/deps/rcheevos/test/lua/doc/luac.1 @@ -0,0 +1,118 @@ +.\" $Id: luac.man,v 1.29 2011/11/16 13:53:40 lhf Exp $ +.TH LUAC 1 "$Date: 2011/11/16 13:53:40 $" +.SH NAME +luac \- Lua compiler +.SH SYNOPSIS +.B luac +[ +.I options +] [ +.I filenames +] +.SH DESCRIPTION +.B luac +is the Lua compiler. +It translates programs written in the Lua programming language +into binary files containing precompiled chunks +that can be later loaded and executed. +.LP +The main advantages of precompiling chunks are: +faster loading, +protecting source code from accidental user changes, +and +off-line syntax checking. +Precompiling does not imply faster execution +because in Lua chunks are always compiled into bytecodes before being executed. +.B luac +simply allows those bytecodes to be saved in a file for later execution. +Precompiled chunks are not necessarily smaller than the corresponding source. +The main goal in precompiling is faster loading. +.LP +In the command line, +you can mix +text files containing Lua source and +binary files containing precompiled chunks. +.B luac +produces a single output file containing the combined bytecodes +for all files given. +Executing the combined file is equivalent to executing the given files. +By default, +the output file is named +.BR luac.out , +but you can change this with the +.B \-o +option. +.LP +Precompiled chunks are +.I not +portable across different architectures. +Moreover, +the internal format of precompiled chunks +is likely to change when a new version of Lua is released. +Make sure you save the source files of all Lua programs that you precompile. +.LP +.SH OPTIONS +.TP +.B \-l +produce a listing of the compiled bytecode for Lua's virtual machine. +Listing bytecodes is useful to learn about Lua's virtual machine. +If no files are given, then +.B luac +loads +.B luac.out +and lists its contents. +Use +.B \-l \-l +for a full listing. +.TP +.BI \-o " file" +output to +.IR file , +instead of the default +.BR luac.out . +(You can use +.B "'\-'" +for standard output, +but not on platforms that open standard output in text mode.) +The output file may be one of the given files because +all files are loaded before the output file is written. +Be careful not to overwrite precious files. +.TP +.B \-p +load files but do not generate any output file. +Used mainly for syntax checking and for testing precompiled chunks: +corrupted files will probably generate errors when loaded. +If no files are given, then +.B luac +loads +.B luac.out +and tests its contents. +No messages are displayed if the file loads without errors. +.TP +.B \-s +strip debug information before writing the output file. +This saves some space in very large chunks, +but if errors occur when running a stripped chunk, +then the error messages may not contain the full information they usually do. +In particular, +line numbers and names of local variables are lost. +.TP +.B \-v +show version information. +.TP +.B \-\- +stop handling options. +.TP +.B \- +stop handling options and process standard input. +.SH "SEE ALSO" +.BR lua (1) +.br +The documentation at lua.org. +.SH DIAGNOSTICS +Error messages should be self explanatory. +.SH AUTHORS +R. Ierusalimschy, +L. H. de Figueiredo, +W. Celes +.\" EOF diff --git a/deps/rcheevos/test/lua/doc/manual.css b/deps/rcheevos/test/lua/doc/manual.css new file mode 100644 index 0000000000..aa0e677dd5 --- /dev/null +++ b/deps/rcheevos/test/lua/doc/manual.css @@ -0,0 +1,21 @@ +h3 code { + font-family: inherit ; + font-size: inherit ; +} + +pre, code { + font-size: 12pt ; +} + +span.apii { + color: gray ; + float: right ; + font-family: inherit ; + font-style: normal ; + font-size: small ; +} + +h2:before { + content: "" ; + padding-right: 0em ; +} diff --git a/deps/rcheevos/test/lua/doc/manual.html b/deps/rcheevos/test/lua/doc/manual.html new file mode 100644 index 0000000000..3126b5d6af --- /dev/null +++ b/deps/rcheevos/test/lua/doc/manual.html @@ -0,0 +1,10985 @@ + + + +Lua 5.3 Reference Manual + + + + + + + +

+Lua +Lua 5.3 Reference Manual +

+ +

+by Roberto Ierusalimschy, Luiz Henrique de Figueiredo, Waldemar Celes + +

+ +Copyright © 2015–2017 Lua.org, PUC-Rio. +Freely available under the terms of the +Lua license. + + +

+contents +· +index +· +other versions +
+ + +

+ + + + + + +

1 – Introduction

+ +

+Lua is a powerful, efficient, lightweight, embeddable scripting language. +It supports procedural programming, +object-oriented programming, functional programming, +data-driven programming, and data description. + + +

+Lua combines simple procedural syntax with powerful data description +constructs based on associative arrays and extensible semantics. +Lua is dynamically typed, +runs by interpreting bytecode with a register-based +virtual machine, +and has automatic memory management with +incremental garbage collection, +making it ideal for configuration, scripting, +and rapid prototyping. + + +

+Lua is implemented as a library, written in clean C, +the common subset of Standard C and C++. +The Lua distribution includes a host program called lua, +which uses the Lua library to offer a complete, +standalone Lua interpreter, +for interactive or batch use. +Lua is intended to be used both as a powerful, lightweight, +embeddable scripting language for any program that needs one, +and as a powerful but lightweight and efficient stand-alone language. + + +

+As an extension language, Lua has no notion of a "main" program: +it works embedded in a host client, +called the embedding program or simply the host. +(Frequently, this host is the stand-alone lua program.) +The host program can invoke functions to execute a piece of Lua code, +can write and read Lua variables, +and can register C functions to be called by Lua code. +Through the use of C functions, Lua can be augmented to cope with +a wide range of different domains, +thus creating customized programming languages sharing a syntactical framework. + + +

+Lua is free software, +and is provided as usual with no guarantees, +as stated in its license. +The implementation described in this manual is available +at Lua's official web site, www.lua.org. + + +

+Like any other reference manual, +this document is dry in places. +For a discussion of the decisions behind the design of Lua, +see the technical papers available at Lua's web site. +For a detailed introduction to programming in Lua, +see Roberto's book, Programming in Lua. + + + +

2 – Basic Concepts

+ +

+This section describes the basic concepts of the language. + + + +

2.1 – Values and Types

+ +

+Lua is a dynamically typed language. +This means that +variables do not have types; only values do. +There are no type definitions in the language. +All values carry their own type. + + +

+All values in Lua are first-class values. +This means that all values can be stored in variables, +passed as arguments to other functions, and returned as results. + + +

+There are eight basic types in Lua: +nil, boolean, number, +string, function, userdata, +thread, and table. +The type nil has one single value, nil, +whose main property is to be different from any other value; +it usually represents the absence of a useful value. +The type boolean has two values, false and true. +Both nil and false make a condition false; +any other value makes it true. +The type number represents both +integer numbers and real (floating-point) numbers. +The type string represents immutable sequences of bytes. + +Lua is 8-bit clean: +strings can contain any 8-bit value, +including embedded zeros ('\0'). +Lua is also encoding-agnostic; +it makes no assumptions about the contents of a string. + + +

+The type number uses two internal representations, +or two subtypes, +one called integer and the other called float. +Lua has explicit rules about when each representation is used, +but it also converts between them automatically as needed (see §3.4.3). +Therefore, +the programmer may choose to mostly ignore the difference +between integers and floats +or to assume complete control over the representation of each number. +Standard Lua uses 64-bit integers and double-precision (64-bit) floats, +but you can also compile Lua so that it +uses 32-bit integers and/or single-precision (32-bit) floats. +The option with 32 bits for both integers and floats +is particularly attractive +for small machines and embedded systems. +(See macro LUA_32BITS in file luaconf.h.) + + +

+Lua can call (and manipulate) functions written in Lua and +functions written in C (see §3.4.10). +Both are represented by the type function. + + +

+The type userdata is provided to allow arbitrary C data to +be stored in Lua variables. +A userdata value represents a block of raw memory. +There are two kinds of userdata: +full userdata, +which is an object with a block of memory managed by Lua, +and light userdata, +which is simply a C pointer value. +Userdata has no predefined operations in Lua, +except assignment and identity test. +By using metatables, +the programmer can define operations for full userdata values +(see §2.4). +Userdata values cannot be created or modified in Lua, +only through the C API. +This guarantees the integrity of data owned by the host program. + + +

+The type thread represents independent threads of execution +and it is used to implement coroutines (see §2.6). +Lua threads are not related to operating-system threads. +Lua supports coroutines on all systems, +even those that do not support threads natively. + + +

+The type table implements associative arrays, +that is, arrays that can be indexed not only with numbers, +but with any Lua value except nil and NaN. +(Not a Number is a special value used to represent +undefined or unrepresentable numerical results, such as 0/0.) +Tables can be heterogeneous; +that is, they can contain values of all types (except nil). +Any key with value nil is not considered part of the table. +Conversely, any key that is not part of a table has +an associated value nil. + + +

+Tables are the sole data-structuring mechanism in Lua; +they can be used to represent ordinary arrays, lists, +symbol tables, sets, records, graphs, trees, etc. +To represent records, Lua uses the field name as an index. +The language supports this representation by +providing a.name as syntactic sugar for a["name"]. +There are several convenient ways to create tables in Lua +(see §3.4.9). + + +

+Like indices, +the values of table fields can be of any type. +In particular, +because functions are first-class values, +table fields can contain functions. +Thus tables can also carry methods (see §3.4.11). + + +

+The indexing of tables follows +the definition of raw equality in the language. +The expressions a[i] and a[j] +denote the same table element +if and only if i and j are raw equal +(that is, equal without metamethods). +In particular, floats with integral values +are equal to their respective integers +(e.g., 1.0 == 1). +To avoid ambiguities, +any float with integral value used as a key +is converted to its respective integer. +For instance, if you write a[2.0] = true, +the actual key inserted into the table will be the +integer 2. +(On the other hand, +2 and "2" are different Lua values and therefore +denote different table entries.) + + +

+Tables, functions, threads, and (full) userdata values are objects: +variables do not actually contain these values, +only references to them. +Assignment, parameter passing, and function returns +always manipulate references to such values; +these operations do not imply any kind of copy. + + +

+The library function type returns a string describing the type +of a given value (see §6.1). + + + + + +

2.2 – Environments and the Global Environment

+ +

+As will be discussed in §3.2 and §3.3.3, +any reference to a free name +(that is, a name not bound to any declaration) var +is syntactically translated to _ENV.var. +Moreover, every chunk is compiled in the scope of +an external local variable named _ENV (see §3.3.2), +so _ENV itself is never a free name in a chunk. + + +

+Despite the existence of this external _ENV variable and +the translation of free names, +_ENV is a completely regular name. +In particular, +you can define new variables and parameters with that name. +Each reference to a free name uses the _ENV that is +visible at that point in the program, +following the usual visibility rules of Lua (see §3.5). + + +

+Any table used as the value of _ENV is called an environment. + + +

+Lua keeps a distinguished environment called the global environment. +This value is kept at a special index in the C registry (see §4.5). +In Lua, the global variable _G is initialized with this same value. +(_G is never used internally.) + + +

+When Lua loads a chunk, +the default value for its _ENV upvalue +is the global environment (see load). +Therefore, by default, +free names in Lua code refer to entries in the global environment +(and, therefore, they are also called global variables). +Moreover, all standard libraries are loaded in the global environment +and some functions there operate on that environment. +You can use load (or loadfile) +to load a chunk with a different environment. +(In C, you have to load the chunk and then change the value +of its first upvalue.) + + + + + +

2.3 – Error Handling

+ +

+Because Lua is an embedded extension language, +all Lua actions start from C code in the host program +calling a function from the Lua library. +(When you use Lua standalone, +the lua application is the host program.) +Whenever an error occurs during +the compilation or execution of a Lua chunk, +control returns to the host, +which can take appropriate measures +(such as printing an error message). + + +

+Lua code can explicitly generate an error by calling the +error function. +If you need to catch errors in Lua, +you can use pcall or xpcall +to call a given function in protected mode. + + +

+Whenever there is an error, +an error object (also called an error message) +is propagated with information about the error. +Lua itself only generates errors whose error object is a string, +but programs may generate errors with +any value as the error object. +It is up to the Lua program or its host to handle such error objects. + + +

+When you use xpcall or lua_pcall, +you may give a message handler +to be called in case of errors. +This function is called with the original error object +and returns a new error object. +It is called before the error unwinds the stack, +so that it can gather more information about the error, +for instance by inspecting the stack and creating a stack traceback. +This message handler is still protected by the protected call; +so, an error inside the message handler +will call the message handler again. +If this loop goes on for too long, +Lua breaks it and returns an appropriate message. +(The message handler is called only for regular runtime errors. +It is not called for memory-allocation errors +nor for errors while running finalizers.) + + + + + +

2.4 – Metatables and Metamethods

+ +

+Every value in Lua can have a metatable. +This metatable is an ordinary Lua table +that defines the behavior of the original value +under certain special operations. +You can change several aspects of the behavior +of operations over a value by setting specific fields in its metatable. +For instance, when a non-numeric value is the operand of an addition, +Lua checks for a function in the field "__add" of the value's metatable. +If it finds one, +Lua calls this function to perform the addition. + + +

+The key for each event in a metatable is a string +with the event name prefixed by two underscores; +the corresponding values are called metamethods. +In the previous example, the key is "__add" +and the metamethod is the function that performs the addition. + + +

+You can query the metatable of any value +using the getmetatable function. +Lua queries metamethods in metatables using a raw access (see rawget). +So, to retrieve the metamethod for event ev in object o, +Lua does the equivalent to the following code: + +

+     rawget(getmetatable(o) or {}, "__ev")
+
+ +

+You can replace the metatable of tables +using the setmetatable function. +You cannot change the metatable of other types from Lua code +(except by using the debug library (§6.10)); +you should use the C API for that. + + +

+Tables and full userdata have individual metatables +(although multiple tables and userdata can share their metatables). +Values of all other types share one single metatable per type; +that is, there is one single metatable for all numbers, +one for all strings, etc. +By default, a value has no metatable, +but the string library sets a metatable for the string type (see §6.4). + + +

+A metatable controls how an object behaves in +arithmetic operations, bitwise operations, +order comparisons, concatenation, length operation, calls, and indexing. +A metatable also can define a function to be called +when a userdata or a table is garbage collected (§2.5). + + +

+For the unary operators (negation, length, and bitwise NOT), +the metamethod is computed and called with a dummy second operand, +equal to the first one. +This extra operand is only to simplify Lua's internals +(by making these operators behave like a binary operation) +and may be removed in future versions. +(For most uses this extra operand is irrelevant.) + + +

+A detailed list of events controlled by metatables is given next. +Each operation is identified by its corresponding key. + + + +

    + +
  • __add: +the addition (+) operation. +If any operand for an addition is not a number +(nor a string coercible to a number), +Lua will try to call a metamethod. +First, Lua will check the first operand (even if it is valid). +If that operand does not define a metamethod for __add, +then Lua will check the second operand. +If Lua can find a metamethod, +it calls the metamethod with the two operands as arguments, +and the result of the call +(adjusted to one value) +is the result of the operation. +Otherwise, +it raises an error. +
    • + +
  • __sub: +the subtraction (-) operation. +Behavior similar to the addition operation. +
    • + +
  • __mul: +the multiplication (*) operation. +Behavior similar to the addition operation. +
    • + +
  • __div: +the division (/) operation. +Behavior similar to the addition operation. +
    • + +
  • __mod: +the modulo (%) operation. +Behavior similar to the addition operation. +
    • + +
  • __pow: +the exponentiation (^) operation. +Behavior similar to the addition operation. +
    • + +
  • __unm: +the negation (unary -) operation. +Behavior similar to the addition operation. +
    • + +
  • __idiv: +the floor division (//) operation. +Behavior similar to the addition operation. +
    • + +
  • __band: +the bitwise AND (&) operation. +Behavior similar to the addition operation, +except that Lua will try a metamethod +if any operand is neither an integer +nor a value coercible to an integer (see §3.4.3). +
    • + +
  • __bor: +the bitwise OR (|) operation. +Behavior similar to the bitwise AND operation. +
    • + +
  • __bxor: +the bitwise exclusive OR (binary ~) operation. +Behavior similar to the bitwise AND operation. +
    • + +
  • __bnot: +the bitwise NOT (unary ~) operation. +Behavior similar to the bitwise AND operation. +
    • + +
  • __shl: +the bitwise left shift (<<) operation. +Behavior similar to the bitwise AND operation. +
    • + +
  • __shr: +the bitwise right shift (>>) operation. +Behavior similar to the bitwise AND operation. +
    • + +
  • __concat: +the concatenation (..) operation. +Behavior similar to the addition operation, +except that Lua will try a metamethod +if any operand is neither a string nor a number +(which is always coercible to a string). +
    • + +
  • __len: +the length (#) operation. +If the object is not a string, +Lua will try its metamethod. +If there is a metamethod, +Lua calls it with the object as argument, +and the result of the call +(always adjusted to one value) +is the result of the operation. +If there is no metamethod but the object is a table, +then Lua uses the table length operation (see §3.4.7). +Otherwise, Lua raises an error. +
    • + +
  • __eq: +the equal (==) operation. +Behavior similar to the addition operation, +except that Lua will try a metamethod only when the values +being compared are either both tables or both full userdata +and they are not primitively equal. +The result of the call is always converted to a boolean. +
    • + +
  • __lt: +the less than (<) operation. +Behavior similar to the addition operation, +except that Lua will try a metamethod only when the values +being compared are neither both numbers nor both strings. +The result of the call is always converted to a boolean. +
    • + +
  • __le: +the less equal (<=) operation. +Unlike other operations, +the less-equal operation can use two different events. +First, Lua looks for the __le metamethod in both operands, +like in the less than operation. +If it cannot find such a metamethod, +then it will try the __lt metamethod, +assuming that a <= b is equivalent to not (b < a). +As with the other comparison operators, +the result is always a boolean. +(This use of the __lt event can be removed in future versions; +it is also slower than a real __le metamethod.) +
    • + +
  • __index: +The indexing access table[key]. +This event happens when table is not a table or +when key is not present in table. +The metamethod is looked up in table. + + +

    +Despite the name, +the metamethod for this event can be either a function or a table. +If it is a function, +it is called with table and key as arguments, +and the result of the call +(adjusted to one value) +is the result of the operation. +If it is a table, +the final result is the result of indexing this table with key. +(This indexing is regular, not raw, +and therefore can trigger another metamethod.) +

    • + +
  • __newindex: +The indexing assignment table[key] = value. +Like the index event, +this event happens when table is not a table or +when key is not present in table. +The metamethod is looked up in table. + + +

    +Like with indexing, +the metamethod for this event can be either a function or a table. +If it is a function, +it is called with table, key, and value as arguments. +If it is a table, +Lua does an indexing assignment to this table with the same key and value. +(This assignment is regular, not raw, +and therefore can trigger another metamethod.) + + +

    +Whenever there is a __newindex metamethod, +Lua does not perform the primitive assignment. +(If necessary, +the metamethod itself can call rawset +to do the assignment.) +

    • + +
  • __call: +The call operation func(args). +This event happens when Lua tries to call a non-function value +(that is, func is not a function). +The metamethod is looked up in func. +If present, +the metamethod is called with func as its first argument, +followed by the arguments of the original call (args). +All results of the call +are the result of the operation. +(This is the only metamethod that allows multiple results.) +
    • + +
+ +

+It is a good practice to add all needed metamethods to a table +before setting it as a metatable of some object. +In particular, the __gc metamethod works only when this order +is followed (see §2.5.1). + + +

+Because metatables are regular tables, +they can contain arbitrary fields, +not only the event names defined above. +Some functions in the standard library +(e.g., tostring) +use other fields in metatables for their own purposes. + + + + + +

2.5 – Garbage Collection

+ +

+Lua performs automatic memory management. +This means that +you do not have to worry about allocating memory for new objects +or freeing it when the objects are no longer needed. +Lua manages memory automatically by running +a garbage collector to collect all dead objects +(that is, objects that are no longer accessible from Lua). +All memory used by Lua is subject to automatic management: +strings, tables, userdata, functions, threads, internal structures, etc. + + +

+Lua implements an incremental mark-and-sweep collector. +It uses two numbers to control its garbage-collection cycles: +the garbage-collector pause and +the garbage-collector step multiplier. +Both use percentage points as units +(e.g., a value of 100 means an internal value of 1). + + +

+The garbage-collector pause +controls how long the collector waits before starting a new cycle. +Larger values make the collector less aggressive. +Values smaller than 100 mean the collector will not wait to +start a new cycle. +A value of 200 means that the collector waits for the total memory in use +to double before starting a new cycle. + + +

+The garbage-collector step multiplier +controls the relative speed of the collector relative to +memory allocation. +Larger values make the collector more aggressive but also increase +the size of each incremental step. +You should not use values smaller than 100, +because they make the collector too slow and +can result in the collector never finishing a cycle. +The default is 200, +which means that the collector runs at "twice" +the speed of memory allocation. + + +

+If you set the step multiplier to a very large number +(larger than 10% of the maximum number of +bytes that the program may use), +the collector behaves like a stop-the-world collector. +If you then set the pause to 200, +the collector behaves as in old Lua versions, +doing a complete collection every time Lua doubles its +memory usage. + + +

+You can change these numbers by calling lua_gc in C +or collectgarbage in Lua. +You can also use these functions to control +the collector directly (e.g., stop and restart it). + + + +

2.5.1 – Garbage-Collection Metamethods

+ +

+You can set garbage-collector metamethods for tables +and, using the C API, +for full userdata (see §2.4). +These metamethods are also called finalizers. +Finalizers allow you to coordinate Lua's garbage collection +with external resource management +(such as closing files, network or database connections, +or freeing your own memory). + + +

+For an object (table or userdata) to be finalized when collected, +you must mark it for finalization. + +You mark an object for finalization when you set its metatable +and the metatable has a field indexed by the string "__gc". +Note that if you set a metatable without a __gc field +and later create that field in the metatable, +the object will not be marked for finalization. + + +

+When a marked object becomes garbage, +it is not collected immediately by the garbage collector. +Instead, Lua puts it in a list. +After the collection, +Lua goes through that list. +For each object in the list, +it checks the object's __gc metamethod: +If it is a function, +Lua calls it with the object as its single argument; +if the metamethod is not a function, +Lua simply ignores it. + + +

+At the end of each garbage-collection cycle, +the finalizers for objects are called in +the reverse order that the objects were marked for finalization, +among those collected in that cycle; +that is, the first finalizer to be called is the one associated +with the object marked last in the program. +The execution of each finalizer may occur at any point during +the execution of the regular code. + + +

+Because the object being collected must still be used by the finalizer, +that object (and other objects accessible only through it) +must be resurrected by Lua. +Usually, this resurrection is transient, +and the object memory is freed in the next garbage-collection cycle. +However, if the finalizer stores the object in some global place +(e.g., a global variable), +then the resurrection is permanent. +Moreover, if the finalizer marks a finalizing object for finalization again, +its finalizer will be called again in the next cycle where the +object is unreachable. +In any case, +the object memory is freed only in a GC cycle where +the object is unreachable and not marked for finalization. + + +

+When you close a state (see lua_close), +Lua calls the finalizers of all objects marked for finalization, +following the reverse order that they were marked. +If any finalizer marks objects for collection during that phase, +these marks have no effect. + + + + + +

2.5.2 – Weak Tables

+ +

+A weak table is a table whose elements are +weak references. +A weak reference is ignored by the garbage collector. +In other words, +if the only references to an object are weak references, +then the garbage collector will collect that object. + + +

+A weak table can have weak keys, weak values, or both. +A table with weak values allows the collection of its values, +but prevents the collection of its keys. +A table with both weak keys and weak values allows the collection of +both keys and values. +In any case, if either the key or the value is collected, +the whole pair is removed from the table. +The weakness of a table is controlled by the +__mode field of its metatable. +If the __mode field is a string containing the character 'k', +the keys in the table are weak. +If __mode contains 'v', +the values in the table are weak. + + +

+A table with weak keys and strong values +is also called an ephemeron table. +In an ephemeron table, +a value is considered reachable only if its key is reachable. +In particular, +if the only reference to a key comes through its value, +the pair is removed. + + +

+Any change in the weakness of a table may take effect only +at the next collect cycle. +In particular, if you change the weakness to a stronger mode, +Lua may still collect some items from that table +before the change takes effect. + + +

+Only objects that have an explicit construction +are removed from weak tables. +Values, such as numbers and light C functions, +are not subject to garbage collection, +and therefore are not removed from weak tables +(unless their associated values are collected). +Although strings are subject to garbage collection, +they do not have an explicit construction, +and therefore are not removed from weak tables. + + +

+Resurrected objects +(that is, objects being finalized +and objects accessible only through objects being finalized) +have a special behavior in weak tables. +They are removed from weak values before running their finalizers, +but are removed from weak keys only in the next collection +after running their finalizers, when such objects are actually freed. +This behavior allows the finalizer to access properties +associated with the object through weak tables. + + +

+If a weak table is among the resurrected objects in a collection cycle, +it may not be properly cleared until the next cycle. + + + + + + + +

2.6 – Coroutines

+ +

+Lua supports coroutines, +also called collaborative multithreading. +A coroutine in Lua represents an independent thread of execution. +Unlike threads in multithread systems, however, +a coroutine only suspends its execution by explicitly calling +a yield function. + + +

+You create a coroutine by calling coroutine.create. +Its sole argument is a function +that is the main function of the coroutine. +The create function only creates a new coroutine and +returns a handle to it (an object of type thread); +it does not start the coroutine. + + +

+You execute a coroutine by calling coroutine.resume. +When you first call coroutine.resume, +passing as its first argument +a thread returned by coroutine.create, +the coroutine starts its execution by +calling its main function. +Extra arguments passed to coroutine.resume are passed +as arguments to that function. +After the coroutine starts running, +it runs until it terminates or yields. + + +

+A coroutine can terminate its execution in two ways: +normally, when its main function returns +(explicitly or implicitly, after the last instruction); +and abnormally, if there is an unprotected error. +In case of normal termination, +coroutine.resume returns true, +plus any values returned by the coroutine main function. +In case of errors, coroutine.resume returns false +plus an error object. + + +

+A coroutine yields by calling coroutine.yield. +When a coroutine yields, +the corresponding coroutine.resume returns immediately, +even if the yield happens inside nested function calls +(that is, not in the main function, +but in a function directly or indirectly called by the main function). +In the case of a yield, coroutine.resume also returns true, +plus any values passed to coroutine.yield. +The next time you resume the same coroutine, +it continues its execution from the point where it yielded, +with the call to coroutine.yield returning any extra +arguments passed to coroutine.resume. + + +

+Like coroutine.create, +the coroutine.wrap function also creates a coroutine, +but instead of returning the coroutine itself, +it returns a function that, when called, resumes the coroutine. +Any arguments passed to this function +go as extra arguments to coroutine.resume. +coroutine.wrap returns all the values returned by coroutine.resume, +except the first one (the boolean error code). +Unlike coroutine.resume, +coroutine.wrap does not catch errors; +any error is propagated to the caller. + + +

+As an example of how coroutines work, +consider the following code: + +

+     function foo (a)
+       print("foo", a)
+       return coroutine.yield(2*a)
+     end
+     
+     co = coroutine.create(function (a,b)
+           print("co-body", a, b)
+           local r = foo(a+1)
+           print("co-body", r)
+           local r, s = coroutine.yield(a+b, a-b)
+           print("co-body", r, s)
+           return b, "end"
+     end)
+     
+     print("main", coroutine.resume(co, 1, 10))
+     print("main", coroutine.resume(co, "r"))
+     print("main", coroutine.resume(co, "x", "y"))
+     print("main", coroutine.resume(co, "x", "y"))
+

+When you run it, it produces the following output: + +

+     co-body 1       10
+     foo     2
+     main    true    4
+     co-body r
+     main    true    11      -9
+     co-body x       y
+     main    true    10      end
+     main    false   cannot resume dead coroutine
+
+ +

+You can also create and manipulate coroutines through the C API: +see functions lua_newthread, lua_resume, +and lua_yield. + + + + + +

3 – The Language

+ +

+This section describes the lexis, the syntax, and the semantics of Lua. +In other words, +this section describes +which tokens are valid, +how they can be combined, +and what their combinations mean. + + +

+Language constructs will be explained using the usual extended BNF notation, +in which +{a} means 0 or more a's, and +[a] means an optional a. +Non-terminals are shown like non-terminal, +keywords are shown like kword, +and other terminal symbols are shown like ‘=’. +The complete syntax of Lua can be found in §9 +at the end of this manual. + + + +

3.1 – Lexical Conventions

+ +

+Lua is a free-form language. +It ignores spaces (including new lines) and comments +between lexical elements (tokens), +except as delimiters between names and keywords. + + +

+Names +(also called identifiers) +in Lua can be any string of letters, +digits, and underscores, +not beginning with a digit and +not being a reserved word. +Identifiers are used to name variables, table fields, and labels. + + +

+The following keywords are reserved +and cannot be used as names: + + +

+     and       break     do        else      elseif    end
+     false     for       function  goto      if        in
+     local     nil       not       or        repeat    return
+     then      true      until     while
+
+ +

+Lua is a case-sensitive language: +and is a reserved word, but And and AND +are two different, valid names. +As a convention, +programs should avoid creating +names that start with an underscore followed by +one or more uppercase letters (such as _VERSION). + + +

+The following strings denote other tokens: + +

+     +     -     *     /     %     ^     #
+     &     ~     |     <<    >>    //
+     ==    ~=    <=    >=    <     >     =
+     (     )     {     }     [     ]     ::
+     ;     :     ,     .     ..    ...
+
+ +

+A short literal string +can be delimited by matching single or double quotes, +and can contain the following C-like escape sequences: +'\a' (bell), +'\b' (backspace), +'\f' (form feed), +'\n' (newline), +'\r' (carriage return), +'\t' (horizontal tab), +'\v' (vertical tab), +'\\' (backslash), +'\"' (quotation mark [double quote]), +and '\'' (apostrophe [single quote]). +A backslash followed by a line break +results in a newline in the string. +The escape sequence '\z' skips the following span +of white-space characters, +including line breaks; +it is particularly useful to break and indent a long literal string +into multiple lines without adding the newlines and spaces +into the string contents. +A short literal string cannot contain unescaped line breaks +nor escapes not forming a valid escape sequence. + + +

+We can specify any byte in a short literal string by its numeric value +(including embedded zeros). +This can be done +with the escape sequence \xXX, +where XX is a sequence of exactly two hexadecimal digits, +or with the escape sequence \ddd, +where ddd is a sequence of up to three decimal digits. +(Note that if a decimal escape sequence is to be followed by a digit, +it must be expressed using exactly three digits.) + + +

+The UTF-8 encoding of a Unicode character +can be inserted in a literal string with +the escape sequence \u{XXX} +(note the mandatory enclosing brackets), +where XXX is a sequence of one or more hexadecimal digits +representing the character code point. + + +

+Literal strings can also be defined using a long format +enclosed by long brackets. +We define an opening long bracket of level n as an opening +square bracket followed by n equal signs followed by another +opening square bracket. +So, an opening long bracket of level 0 is written as [[, +an opening long bracket of level 1 is written as [=[, +and so on. +A closing long bracket is defined similarly; +for instance, +a closing long bracket of level 4 is written as ]====]. +A long literal starts with an opening long bracket of any level and +ends at the first closing long bracket of the same level. +It can contain any text except a closing bracket of the same level. +Literals in this bracketed form can run for several lines, +do not interpret any escape sequences, +and ignore long brackets of any other level. +Any kind of end-of-line sequence +(carriage return, newline, carriage return followed by newline, +or newline followed by carriage return) +is converted to a simple newline. + + +

+For convenience, +when the opening long bracket is immediately followed by a newline, +the newline is not included in the string. +As an example, in a system using ASCII +(in which 'a' is coded as 97, +newline is coded as 10, and '1' is coded as 49), +the five literal strings below denote the same string: + +

+     a = 'alo\n123"'
+     a = "alo\n123\""
+     a = '\97lo\10\04923"'
+     a = [[alo
+     123"]]
+     a = [==[
+     alo
+     123"]==]
+
+ +

+Any byte in a literal string not +explicitly affected by the previous rules represents itself. +However, Lua opens files for parsing in text mode, +and the system file functions may have problems with +some control characters. +So, it is safer to represent +non-text data as a quoted literal with +explicit escape sequences for the non-text characters. + + +

+A numeric constant (or numeral) +can be written with an optional fractional part +and an optional decimal exponent, +marked by a letter 'e' or 'E'. +Lua also accepts hexadecimal constants, +which start with 0x or 0X. +Hexadecimal constants also accept an optional fractional part +plus an optional binary exponent, +marked by a letter 'p' or 'P'. +A numeric constant with a radix point or an exponent +denotes a float; +otherwise, +if its value fits in an integer, +it denotes an integer. +Examples of valid integer constants are + +

+     3   345   0xff   0xBEBADA
+

+Examples of valid float constants are + +

+     3.0     3.1416     314.16e-2     0.31416E1     34e1
+     0x0.1E  0xA23p-4   0X1.921FB54442D18P+1
+
+ +

+A comment starts with a double hyphen (--) +anywhere outside a string. +If the text immediately after -- is not an opening long bracket, +the comment is a short comment, +which runs until the end of the line. +Otherwise, it is a long comment, +which runs until the corresponding closing long bracket. +Long comments are frequently used to disable code temporarily. + + + + + +

3.2 – Variables

+ +

+Variables are places that store values. +There are three kinds of variables in Lua: +global variables, local variables, and table fields. + + +

+A single name can denote a global variable or a local variable +(or a function's formal parameter, +which is a particular kind of local variable): + +

+	var ::= Name
+

+Name denotes identifiers, as defined in §3.1. + + +

+Any variable name is assumed to be global unless explicitly declared +as a local (see §3.3.7). +Local variables are lexically scoped: +local variables can be freely accessed by functions +defined inside their scope (see §3.5). + + +

+Before the first assignment to a variable, its value is nil. + + +

+Square brackets are used to index a table: + +

+	var ::= prefixexp ‘[’ exp ‘]’
+

+The meaning of accesses to table fields can be changed via metatables. +An access to an indexed variable t[i] is equivalent to +a call gettable_event(t,i). +(See §2.4 for a complete description of the +gettable_event function. +This function is not defined or callable in Lua. +We use it here only for explanatory purposes.) + + +

+The syntax var.Name is just syntactic sugar for +var["Name"]: + +

+	var ::= prefixexp ‘.’ Name
+
+ +

+An access to a global variable x +is equivalent to _ENV.x. +Due to the way that chunks are compiled, +_ENV is never a global name (see §2.2). + + + + + +

3.3 – Statements

+ +

+Lua supports an almost conventional set of statements, +similar to those in Pascal or C. +This set includes +assignments, control structures, function calls, +and variable declarations. + + + +

3.3.1 – Blocks

+ +

+A block is a list of statements, +which are executed sequentially: + +

+	block ::= {stat}
+

+Lua has empty statements +that allow you to separate statements with semicolons, +start a block with a semicolon +or write two semicolons in sequence: + +

+	stat ::= ‘;’
+
+ +

+Function calls and assignments +can start with an open parenthesis. +This possibility leads to an ambiguity in Lua's grammar. +Consider the following fragment: + +

+     a = b + c
+     (print or io.write)('done')
+

+The grammar could see it in two ways: + +

+     a = b + c(print or io.write)('done')
+     
+     a = b + c; (print or io.write)('done')
+

+The current parser always sees such constructions +in the first way, +interpreting the open parenthesis +as the start of the arguments to a call. +To avoid this ambiguity, +it is a good practice to always precede with a semicolon +statements that start with a parenthesis: + +

+     ;(print or io.write)('done')
+
+ +

+A block can be explicitly delimited to produce a single statement: + +

+	stat ::= do block end
+

+Explicit blocks are useful +to control the scope of variable declarations. +Explicit blocks are also sometimes used to +add a return statement in the middle +of another block (see §3.3.4). + + + + + +

3.3.2 – Chunks

+ +

+The unit of compilation of Lua is called a chunk. +Syntactically, +a chunk is simply a block: + +

+	chunk ::= block
+
+ +

+Lua handles a chunk as the body of an anonymous function +with a variable number of arguments +(see §3.4.11). +As such, chunks can define local variables, +receive arguments, and return values. +Moreover, such anonymous function is compiled as in the +scope of an external local variable called _ENV (see §2.2). +The resulting function always has _ENV as its only upvalue, +even if it does not use that variable. + + +

+A chunk can be stored in a file or in a string inside the host program. +To execute a chunk, +Lua first loads it, +precompiling the chunk's code into instructions for a virtual machine, +and then Lua executes the compiled code +with an interpreter for the virtual machine. + + +

+Chunks can also be precompiled into binary form; +see program luac and function string.dump for details. +Programs in source and compiled forms are interchangeable; +Lua automatically detects the file type and acts accordingly (see load). + + + + + +

3.3.3 – Assignment

+ +

+Lua allows multiple assignments. +Therefore, the syntax for assignment +defines a list of variables on the left side +and a list of expressions on the right side. +The elements in both lists are separated by commas: + +

+	stat ::= varlist ‘=’ explist
+	varlist ::= var {‘,’ var}
+	explist ::= exp {‘,’ exp}
+

+Expressions are discussed in §3.4. + + +

+Before the assignment, +the list of values is adjusted to the length of +the list of variables. +If there are more values than needed, +the excess values are thrown away. +If there are fewer values than needed, +the list is extended with as many nil's as needed. +If the list of expressions ends with a function call, +then all values returned by that call enter the list of values, +before the adjustment +(except when the call is enclosed in parentheses; see §3.4). + + +

+The assignment statement first evaluates all its expressions +and only then the assignments are performed. +Thus the code + +

+     i = 3
+     i, a[i] = i+1, 20
+

+sets a[3] to 20, without affecting a[4] +because the i in a[i] is evaluated (to 3) +before it is assigned 4. +Similarly, the line + +

+     x, y = y, x
+

+exchanges the values of x and y, +and + +

+     x, y, z = y, z, x
+

+cyclically permutes the values of x, y, and z. + + +

+The meaning of assignments to global variables +and table fields can be changed via metatables. +An assignment to an indexed variable t[i] = val is equivalent to +settable_event(t,i,val). +(See §2.4 for a complete description of the +settable_event function. +This function is not defined or callable in Lua. +We use it here only for explanatory purposes.) + + +

+An assignment to a global name x = val +is equivalent to the assignment +_ENV.x = val (see §2.2). + + + + + +

3.3.4 – Control Structures

+The control structures +if, while, and repeat have the usual meaning and +familiar syntax: + + + + +

+	stat ::= while exp do block end
+	stat ::= repeat block until exp
+	stat ::= if exp then block {elseif exp then block} [else block] end
+

+Lua also has a for statement, in two flavors (see §3.3.5). + + +

+The condition expression of a +control structure can return any value. +Both false and nil are considered false. +All values different from nil and false are considered true +(in particular, the number 0 and the empty string are also true). + + +

+In the repeat–until loop, +the inner block does not end at the until keyword, +but only after the condition. +So, the condition can refer to local variables +declared inside the loop block. + + +

+The goto statement transfers the program control to a label. +For syntactical reasons, +labels in Lua are considered statements too: + + + +

+	stat ::= goto Name
+	stat ::= label
+	label ::= ‘::’ Name ‘::’
+
+ +

+A label is visible in the entire block where it is defined, +except +inside nested blocks where a label with the same name is defined and +inside nested functions. +A goto may jump to any visible label as long as it does not +enter into the scope of a local variable. + + +

+Labels and empty statements are called void statements, +as they perform no actions. + + +

+The break statement terminates the execution of a +while, repeat, or for loop, +skipping to the next statement after the loop: + + +

+	stat ::= break
+

+A break ends the innermost enclosing loop. + + +

+The return statement is used to return values +from a function or a chunk +(which is an anonymous function). + +Functions can return more than one value, +so the syntax for the return statement is + +

+	stat ::= return [explist] [‘;’]
+
+ +

+The return statement can only be written +as the last statement of a block. +If it is really necessary to return in the middle of a block, +then an explicit inner block can be used, +as in the idiom do return end, +because now return is the last statement in its (inner) block. + + + + + +

3.3.5 – For Statement

+ +

+ +The for statement has two forms: +one numerical and one generic. + + +

+The numerical for loop repeats a block of code while a +control variable runs through an arithmetic progression. +It has the following syntax: + +

+	stat ::= for Name ‘=’ exp ‘,’ exp [‘,’ exp] do block end
+

+The block is repeated for name starting at the value of +the first exp, until it passes the second exp by steps of the +third exp. +More precisely, a for statement like + +

+     for v = e1, e2, e3 do block end
+

+is equivalent to the code: + +

+     do
+       local var, limit, step = tonumber(e1), tonumber(e2), tonumber(e3)
+       if not (var and limit and step) then error() end
+       var = var - step
+       while true do
+         var = var + step
+         if (step >= 0 and var > limit) or (step < 0 and var < limit) then
+           break
+         end
+         local v = var
+         block
+       end
+     end
+
+ +

+Note the following: + +

    + +
  • +All three control expressions are evaluated only once, +before the loop starts. +They must all result in numbers. +
    • + +
  • +var, limit, and step are invisible variables. +The names shown here are for explanatory purposes only. +
    • + +
  • +If the third expression (the step) is absent, +then a step of 1 is used. +
    • + +
  • +You can use break and goto to exit a for loop. +
    • + +
  • +The loop variable v is local to the loop body. +If you need its value after the loop, +assign it to another variable before exiting the loop. +
    • + +
+ +

+The generic for statement works over functions, +called iterators. +On each iteration, the iterator function is called to produce a new value, +stopping when this new value is nil. +The generic for loop has the following syntax: + +

+	stat ::= for namelist in explist do block end
+	namelist ::= Name {‘,’ Name}
+

+A for statement like + +

+     for var_1, ···, var_n in explist do block end
+

+is equivalent to the code: + +

+     do
+       local f, s, var = explist
+       while true do
+         local var_1, ···, var_n = f(s, var)
+         if var_1 == nil then break end
+         var = var_1
+         block
+       end
+     end
+

+Note the following: + +

    + +
  • +explist is evaluated only once. +Its results are an iterator function, +a state, +and an initial value for the first iterator variable. +
    • + +
  • +f, s, and var are invisible variables. +The names are here for explanatory purposes only. +
    • + +
  • +You can use break to exit a for loop. +
    • + +
  • +The loop variables var_i are local to the loop; +you cannot use their values after the for ends. +If you need these values, +then assign them to other variables before breaking or exiting the loop. +
    • + +
+ + + + +

3.3.6 – Function Calls as Statements

+To allow possible side-effects, +function calls can be executed as statements: + +

+	stat ::= functioncall
+

+In this case, all returned values are thrown away. +Function calls are explained in §3.4.10. + + + + + +

3.3.7 – Local Declarations

+Local variables can be declared anywhere inside a block. +The declaration can include an initial assignment: + +

+	stat ::= local namelist [‘=’ explist]
+

+If present, an initial assignment has the same semantics +of a multiple assignment (see §3.3.3). +Otherwise, all variables are initialized with nil. + + +

+A chunk is also a block (see §3.3.2), +and so local variables can be declared in a chunk outside any explicit block. + + +

+The visibility rules for local variables are explained in §3.5. + + + + + + + +

3.4 – Expressions

+ +

+The basic expressions in Lua are the following: + +

+	exp ::= prefixexp
+	exp ::= nil | false | true
+	exp ::= Numeral
+	exp ::= LiteralString
+	exp ::= functiondef
+	exp ::= tableconstructor
+	exp ::= ‘...’
+	exp ::= exp binop exp
+	exp ::= unop exp
+	prefixexp ::= var | functioncall | ‘(’ exp ‘)’
+
+ +

+Numerals and literal strings are explained in §3.1; +variables are explained in §3.2; +function definitions are explained in §3.4.11; +function calls are explained in §3.4.10; +table constructors are explained in §3.4.9. +Vararg expressions, +denoted by three dots ('...'), can only be used when +directly inside a vararg function; +they are explained in §3.4.11. + + +

+Binary operators comprise arithmetic operators (see §3.4.1), +bitwise operators (see §3.4.2), +relational operators (see §3.4.4), logical operators (see §3.4.5), +and the concatenation operator (see §3.4.6). +Unary operators comprise the unary minus (see §3.4.1), +the unary bitwise NOT (see §3.4.2), +the unary logical not (see §3.4.5), +and the unary length operator (see §3.4.7). + + +

+Both function calls and vararg expressions can result in multiple values. +If a function call is used as a statement (see §3.3.6), +then its return list is adjusted to zero elements, +thus discarding all returned values. +If an expression is used as the last (or the only) element +of a list of expressions, +then no adjustment is made +(unless the expression is enclosed in parentheses). +In all other contexts, +Lua adjusts the result list to one element, +either discarding all values except the first one +or adding a single nil if there are no values. + + +

+Here are some examples: + +

+     f()                -- adjusted to 0 results
+     g(f(), x)          -- f() is adjusted to 1 result
+     g(x, f())          -- g gets x plus all results from f()
+     a,b,c = f(), x     -- f() is adjusted to 1 result (c gets nil)
+     a,b = ...          -- a gets the first vararg parameter, b gets
+                        -- the second (both a and b can get nil if there
+                        -- is no corresponding vararg parameter)
+     
+     a,b,c = x, f()     -- f() is adjusted to 2 results
+     a,b,c = f()        -- f() is adjusted to 3 results
+     return f()         -- returns all results from f()
+     return ...         -- returns all received vararg parameters
+     return x,y,f()     -- returns x, y, and all results from f()
+     {f()}              -- creates a list with all results from f()
+     {...}              -- creates a list with all vararg parameters
+     {f(), nil}         -- f() is adjusted to 1 result
+
+ +

+Any expression enclosed in parentheses always results in only one value. +Thus, +(f(x,y,z)) is always a single value, +even if f returns several values. +(The value of (f(x,y,z)) is the first value returned by f +or nil if f does not return any values.) + + + +

3.4.1 – Arithmetic Operators

+Lua supports the following arithmetic operators: + +

    +
  • +: addition
    • +
  • -: subtraction
    • +
  • *: multiplication
    • +
  • /: float division
    • +
  • //: floor division
    • +
  • %: modulo
    • +
  • ^: exponentiation
    • +
  • -: unary minus
    • +
+ +

+With the exception of exponentiation and float division, +the arithmetic operators work as follows: +If both operands are integers, +the operation is performed over integers and the result is an integer. +Otherwise, if both operands are numbers +or strings that can be converted to +numbers (see §3.4.3), +then they are converted to floats, +the operation is performed following the usual rules +for floating-point arithmetic +(usually the IEEE 754 standard), +and the result is a float. + + +

+Exponentiation and float division (/) +always convert their operands to floats +and the result is always a float. +Exponentiation uses the ISO C function pow, +so that it works for non-integer exponents too. + + +

+Floor division (//) is a division +that rounds the quotient towards minus infinity, +that is, the floor of the division of its operands. + + +

+Modulo is defined as the remainder of a division +that rounds the quotient towards minus infinity (floor division). + + +

+In case of overflows in integer arithmetic, +all operations wrap around, +according to the usual rules of two-complement arithmetic. +(In other words, +they return the unique representable integer +that is equal modulo 264 to the mathematical result.) + + + +

3.4.2 – Bitwise Operators

+Lua supports the following bitwise operators: + +

    +
  • &: bitwise AND
    • +
  • |: bitwise OR
    • +
  • ~: bitwise exclusive OR
    • +
  • >>: right shift
    • +
  • <<: left shift
    • +
  • ~: unary bitwise NOT
    • +
+ +

+All bitwise operations convert its operands to integers +(see §3.4.3), +operate on all bits of those integers, +and result in an integer. + + +

+Both right and left shifts fill the vacant bits with zeros. +Negative displacements shift to the other direction; +displacements with absolute values equal to or higher than +the number of bits in an integer +result in zero (as all bits are shifted out). + + + + + +

3.4.3 – Coercions and Conversions

+Lua provides some automatic conversions between some +types and representations at run time. +Bitwise operators always convert float operands to integers. +Exponentiation and float division +always convert integer operands to floats. +All other arithmetic operations applied to mixed numbers +(integers and floats) convert the integer operand to a float; +this is called the usual rule. +The C API also converts both integers to floats and +floats to integers, as needed. +Moreover, string concatenation accepts numbers as arguments, +besides strings. + + +

+Lua also converts strings to numbers, +whenever a number is expected. + + +

+In a conversion from integer to float, +if the integer value has an exact representation as a float, +that is the result. +Otherwise, +the conversion gets the nearest higher or +the nearest lower representable value. +This kind of conversion never fails. + + +

+The conversion from float to integer +checks whether the float has an exact representation as an integer +(that is, the float has an integral value and +it is in the range of integer representation). +If it does, that representation is the result. +Otherwise, the conversion fails. + + +

+The conversion from strings to numbers goes as follows: +First, the string is converted to an integer or a float, +following its syntax and the rules of the Lua lexer. +(The string may have also leading and trailing spaces and a sign.) +Then, the resulting number (float or integer) +is converted to the type (float or integer) required by the context +(e.g., the operation that forced the conversion). + + +

+All conversions from strings to numbers +accept both a dot and the current locale mark +as the radix character. +(The Lua lexer, however, accepts only a dot.) + + +

+The conversion from numbers to strings uses a +non-specified human-readable format. +For complete control over how numbers are converted to strings, +use the format function from the string library +(see string.format). + + + + + +

3.4.4 – Relational Operators

+Lua supports the following relational operators: + +

    +
  • ==: equality
    • +
  • ~=: inequality
    • +
  • <: less than
    • +
  • >: greater than
    • +
  • <=: less or equal
    • +
  • >=: greater or equal
    • +

+These operators always result in false or true. + + +

+Equality (==) first compares the type of its operands. +If the types are different, then the result is false. +Otherwise, the values of the operands are compared. +Strings are compared in the obvious way. +Numbers are equal if they denote the same mathematical value. + + +

+Tables, userdata, and threads +are compared by reference: +two objects are considered equal only if they are the same object. +Every time you create a new object +(a table, userdata, or thread), +this new object is different from any previously existing object. +Closures with the same reference are always equal. +Closures with any detectable difference +(different behavior, different definition) are always different. + + +

+You can change the way that Lua compares tables and userdata +by using the "eq" metamethod (see §2.4). + + +

+Equality comparisons do not convert strings to numbers +or vice versa. +Thus, "0"==0 evaluates to false, +and t[0] and t["0"] denote different +entries in a table. + + +

+The operator ~= is exactly the negation of equality (==). + + +

+The order operators work as follows. +If both arguments are numbers, +then they are compared according to their mathematical values +(regardless of their subtypes). +Otherwise, if both arguments are strings, +then their values are compared according to the current locale. +Otherwise, Lua tries to call the "lt" or the "le" +metamethod (see §2.4). +A comparison a > b is translated to b < a +and a >= b is translated to b <= a. + + +

+Following the IEEE 754 standard, +NaN is considered neither smaller than, +nor equal to, nor greater than any value (including itself). + + + + + +

3.4.5 – Logical Operators

+The logical operators in Lua are +and, or, and not. +Like the control structures (see §3.3.4), +all logical operators consider both false and nil as false +and anything else as true. + + +

+The negation operator not always returns false or true. +The conjunction operator and returns its first argument +if this value is false or nil; +otherwise, and returns its second argument. +The disjunction operator or returns its first argument +if this value is different from nil and false; +otherwise, or returns its second argument. +Both and and or use short-circuit evaluation; +that is, +the second operand is evaluated only if necessary. +Here are some examples: + +

+     10 or 20            --> 10
+     10 or error()       --> 10
+     nil or "a"          --> "a"
+     nil and 10          --> nil
+     false and error()   --> false
+     false and nil       --> false
+     false or nil        --> nil
+     10 and 20           --> 20
+

+(In this manual, +--> indicates the result of the preceding expression.) + + + + + +

3.4.6 – Concatenation

+The string concatenation operator in Lua is +denoted by two dots ('..'). +If both operands are strings or numbers, then they are converted to +strings according to the rules described in §3.4.3. +Otherwise, the __concat metamethod is called (see §2.4). + + + + + +

3.4.7 – The Length Operator

+ +

+The length operator is denoted by the unary prefix operator #. + + +

+The length of a string is its number of bytes +(that is, the usual meaning of string length when each +character is one byte). + + +

+The length operator applied on a table +returns a border in that table. +A border in a table t is any natural number +that satisfies the following condition: + +

+     (border == 0 or t[border] ~= nil) and t[border + 1] == nil
+

+In words, +a border is any (natural) index in a table +where a non-nil value is followed by a nil value +(or zero, when index 1 is nil). + + +

+A table with exactly one border is called a sequence. +For instance, the table {10, 20, 30, 40, 50} is a sequence, +as it has only one border (5). +The table {10, 20, 30, nil, 50} has two borders (3 and 5), +and therefore it is not a sequence. +The table {nil, 20, 30, nil, nil, 60, nil} +has three borders (0, 3, and 6), +so it is not a sequence, too. +The table {} is a sequence with border 0. +Note that non-natural keys do not interfere +with whether a table is a sequence. + + +

+When t is a sequence, +#t returns its only border, +which corresponds to the intuitive notion of the length of the sequence. +When t is not a sequence, +#t can return any of its borders. +(The exact one depends on details of +the internal representation of the table, +which in turn can depend on how the table was populated and +the memory addresses of its non-numeric keys.) + + +

+The computation of the length of a table +has a guaranteed worst time of O(log n), +where n is the largest natural key in the table. + + +

+A program can modify the behavior of the length operator for +any value but strings through the __len metamethod (see §2.4). + + + + + +

3.4.8 – Precedence

+Operator precedence in Lua follows the table below, +from lower to higher priority: + +

+     or
+     and
+     <     >     <=    >=    ~=    ==
+     |
+     ~
+     &
+     <<    >>
+     ..
+     +     -
+     *     /     //    %
+     unary operators (not   #     -     ~)
+     ^
+

+As usual, +you can use parentheses to change the precedences of an expression. +The concatenation ('..') and exponentiation ('^') +operators are right associative. +All other binary operators are left associative. + + + + + +

3.4.9 – Table Constructors

+Table constructors are expressions that create tables. +Every time a constructor is evaluated, a new table is created. +A constructor can be used to create an empty table +or to create a table and initialize some of its fields. +The general syntax for constructors is + +

+	tableconstructor ::= ‘{’ [fieldlist] ‘}’
+	fieldlist ::= field {fieldsep field} [fieldsep]
+	field ::= ‘[’ exp ‘]’ ‘=’ exp | Name ‘=’ exp | exp
+	fieldsep ::= ‘,’ | ‘;’
+
+ +

+Each field of the form [exp1] = exp2 adds to the new table an entry +with key exp1 and value exp2. +A field of the form name = exp is equivalent to +["name"] = exp. +Finally, fields of the form exp are equivalent to +[i] = exp, where i are consecutive integers +starting with 1. +Fields in the other formats do not affect this counting. +For example, + +

+     a = { [f(1)] = g; "x", "y"; x = 1, f(x), [30] = 23; 45 }
+

+is equivalent to + +

+     do
+       local t = {}
+       t[f(1)] = g
+       t[1] = "x"         -- 1st exp
+       t[2] = "y"         -- 2nd exp
+       t.x = 1            -- t["x"] = 1
+       t[3] = f(x)        -- 3rd exp
+       t[30] = 23
+       t[4] = 45          -- 4th exp
+       a = t
+     end
+
+ +

+The order of the assignments in a constructor is undefined. +(This order would be relevant only when there are repeated keys.) + + +

+If the last field in the list has the form exp +and the expression is a function call or a vararg expression, +then all values returned by this expression enter the list consecutively +(see §3.4.10). + + +

+The field list can have an optional trailing separator, +as a convenience for machine-generated code. + + + + + +

3.4.10 – Function Calls

+A function call in Lua has the following syntax: + +

+	functioncall ::= prefixexp args
+

+In a function call, +first prefixexp and args are evaluated. +If the value of prefixexp has type function, +then this function is called +with the given arguments. +Otherwise, the prefixexp "call" metamethod is called, +having as first parameter the value of prefixexp, +followed by the original call arguments +(see §2.4). + + +

+The form + +

+	functioncall ::= prefixexp ‘:’ Name args
+

+can be used to call "methods". +A call v:name(args) +is syntactic sugar for v.name(v,args), +except that v is evaluated only once. + + +

+Arguments have the following syntax: + +

+	args ::= ‘(’ [explist] ‘)’
+	args ::= tableconstructor
+	args ::= LiteralString
+

+All argument expressions are evaluated before the call. +A call of the form f{fields} is +syntactic sugar for f({fields}); +that is, the argument list is a single new table. +A call of the form f'string' +(or f"string" or f[[string]]) +is syntactic sugar for f('string'); +that is, the argument list is a single literal string. + + +

+A call of the form return functioncall is called +a tail call. +Lua implements proper tail calls +(or proper tail recursion): +in a tail call, +the called function reuses the stack entry of the calling function. +Therefore, there is no limit on the number of nested tail calls that +a program can execute. +However, a tail call erases any debug information about the +calling function. +Note that a tail call only happens with a particular syntax, +where the return has one single function call as argument; +this syntax makes the calling function return exactly +the returns of the called function. +So, none of the following examples are tail calls: + +

+     return (f(x))        -- results adjusted to 1
+     return 2 * f(x)
+     return x, f(x)       -- additional results
+     f(x); return         -- results discarded
+     return x or f(x)     -- results adjusted to 1
+
+ + + + +

3.4.11 – Function Definitions

+ +

+The syntax for function definition is + +

+	functiondef ::= function funcbody
+	funcbody ::= ‘(’ [parlist] ‘)’ block end
+
+ +

+The following syntactic sugar simplifies function definitions: + +

+	stat ::= function funcname funcbody
+	stat ::= local function Name funcbody
+	funcname ::= Name {‘.’ Name} [‘:’ Name]
+

+The statement + +

+     function f () body end
+

+translates to + +

+     f = function () body end
+

+The statement + +

+     function t.a.b.c.f () body end
+

+translates to + +

+     t.a.b.c.f = function () body end
+

+The statement + +

+     local function f () body end
+

+translates to + +

+     local f; f = function () body end
+

+not to + +

+     local f = function () body end
+

+(This only makes a difference when the body of the function +contains references to f.) + + +

+A function definition is an executable expression, +whose value has type function. +When Lua precompiles a chunk, +all its function bodies are precompiled too. +Then, whenever Lua executes the function definition, +the function is instantiated (or closed). +This function instance (or closure) +is the final value of the expression. + + +

+Parameters act as local variables that are +initialized with the argument values: + +

+	parlist ::= namelist [‘,’ ‘...’] | ‘...’
+

+When a function is called, +the list of arguments is adjusted to +the length of the list of parameters, +unless the function is a vararg function, +which is indicated by three dots ('...') +at the end of its parameter list. +A vararg function does not adjust its argument list; +instead, it collects all extra arguments and supplies them +to the function through a vararg expression, +which is also written as three dots. +The value of this expression is a list of all actual extra arguments, +similar to a function with multiple results. +If a vararg expression is used inside another expression +or in the middle of a list of expressions, +then its return list is adjusted to one element. +If the expression is used as the last element of a list of expressions, +then no adjustment is made +(unless that last expression is enclosed in parentheses). + + +

+As an example, consider the following definitions: + +

+     function f(a, b) end
+     function g(a, b, ...) end
+     function r() return 1,2,3 end
+

+Then, we have the following mapping from arguments to parameters and +to the vararg expression: + +

+     CALL            PARAMETERS
+     
+     f(3)             a=3, b=nil
+     f(3, 4)          a=3, b=4
+     f(3, 4, 5)       a=3, b=4
+     f(r(), 10)       a=1, b=10
+     f(r())           a=1, b=2
+     
+     g(3)             a=3, b=nil, ... -->  (nothing)
+     g(3, 4)          a=3, b=4,   ... -->  (nothing)
+     g(3, 4, 5, 8)    a=3, b=4,   ... -->  5  8
+     g(5, r())        a=5, b=1,   ... -->  2  3
+
+ +

+Results are returned using the return statement (see §3.3.4). +If control reaches the end of a function +without encountering a return statement, +then the function returns with no results. + + +

+ +There is a system-dependent limit on the number of values +that a function may return. +This limit is guaranteed to be larger than 1000. + + +

+The colon syntax +is used for defining methods, +that is, functions that have an implicit extra parameter self. +Thus, the statement + +

+     function t.a.b.c:f (params) body end
+

+is syntactic sugar for + +

+     t.a.b.c.f = function (self, params) body end
+
+ + + + + + +

3.5 – Visibility Rules

+ +

+ +Lua is a lexically scoped language. +The scope of a local variable begins at the first statement after +its declaration and lasts until the last non-void statement +of the innermost block that includes the declaration. +Consider the following example: + +

+     x = 10                -- global variable
+     do                    -- new block
+       local x = x         -- new 'x', with value 10
+       print(x)            --> 10
+       x = x+1
+       do                  -- another block
+         local x = x+1     -- another 'x'
+         print(x)          --> 12
+       end
+       print(x)            --> 11
+     end
+     print(x)              --> 10  (the global one)
+
+ +

+Notice that, in a declaration like local x = x, +the new x being declared is not in scope yet, +and so the second x refers to the outside variable. + + +

+Because of the lexical scoping rules, +local variables can be freely accessed by functions +defined inside their scope. +A local variable used by an inner function is called +an upvalue, or external local variable, +inside the inner function. + + +

+Notice that each execution of a local statement +defines new local variables. +Consider the following example: + +

+     a = {}
+     local x = 20
+     for i=1,10 do
+       local y = 0
+       a[i] = function () y=y+1; return x+y end
+     end
+

+The loop creates ten closures +(that is, ten instances of the anonymous function). +Each of these closures uses a different y variable, +while all of them share the same x. + + + + + +

4 – The Application Program Interface

+ +

+ +This section describes the C API for Lua, that is, +the set of C functions available to the host program to communicate +with Lua. +All API functions and related types and constants +are declared in the header file lua.h. + + +

+Even when we use the term "function", +any facility in the API may be provided as a macro instead. +Except where stated otherwise, +all such macros use each of their arguments exactly once +(except for the first argument, which is always a Lua state), +and so do not generate any hidden side-effects. + + +

+As in most C libraries, +the Lua API functions do not check their arguments for validity or consistency. +However, you can change this behavior by compiling Lua +with the macro LUA_USE_APICHECK defined. + + +

+The Lua library is fully reentrant: +it has no global variables. +It keeps all information it needs in a dynamic structure, +called the Lua state. + + +

+Each Lua state has one or more threads, +which correspond to independent, cooperative lines of execution. +The type lua_State (despite its name) refers to a thread. +(Indirectly, through the thread, it also refers to the +Lua state associated to the thread.) + + +

+A pointer to a thread must be passed as the first argument to +every function in the library, except to lua_newstate, +which creates a Lua state from scratch and returns a pointer +to the main thread in the new state. + + + +

4.1 – The Stack

+ +

+Lua uses a virtual stack to pass values to and from C. +Each element in this stack represents a Lua value +(nil, number, string, etc.). +Functions in the API can access this stack through the +Lua state parameter that they receive. + + +

+Whenever Lua calls C, the called function gets a new stack, +which is independent of previous stacks and of stacks of +C functions that are still active. +This stack initially contains any arguments to the C function +and it is where the C function can store temporary +Lua values and must push its results +to be returned to the caller (see lua_CFunction). + + +

+For convenience, +most query operations in the API do not follow a strict stack discipline. +Instead, they can refer to any element in the stack +by using an index: +A positive index represents an absolute stack position +(starting at 1); +a negative index represents an offset relative to the top of the stack. +More specifically, if the stack has n elements, +then index 1 represents the first element +(that is, the element that was pushed onto the stack first) +and +index n represents the last element; +index -1 also represents the last element +(that is, the element at the top) +and index -n represents the first element. + + + + + +

4.2 – Stack Size

+ +

+When you interact with the Lua API, +you are responsible for ensuring consistency. +In particular, +you are responsible for controlling stack overflow. +You can use the function lua_checkstack +to ensure that the stack has enough space for pushing new elements. + + +

+Whenever Lua calls C, +it ensures that the stack has space for +at least LUA_MINSTACK extra slots. +LUA_MINSTACK is defined as 20, +so that usually you do not have to worry about stack space +unless your code has loops pushing elements onto the stack. + + +

+When you call a Lua function +without a fixed number of results (see lua_call), +Lua ensures that the stack has enough space for all results, +but it does not ensure any extra space. +So, before pushing anything in the stack after such a call +you should use lua_checkstack. + + + + + +

4.3 – Valid and Acceptable Indices

+ +

+Any function in the API that receives stack indices +works only with valid indices or acceptable indices. + + +

+A valid index is an index that refers to a +position that stores a modifiable Lua value. +It comprises stack indices between 1 and the stack top +(1 ≤ abs(index) ≤ top) + +plus pseudo-indices, +which represent some positions that are accessible to C code +but that are not in the stack. +Pseudo-indices are used to access the registry (see §4.5) +and the upvalues of a C function (see §4.4). + + +

+Functions that do not need a specific mutable position, +but only a value (e.g., query functions), +can be called with acceptable indices. +An acceptable index can be any valid index, +but it also can be any positive index after the stack top +within the space allocated for the stack, +that is, indices up to the stack size. +(Note that 0 is never an acceptable index.) +Except when noted otherwise, +functions in the API work with acceptable indices. + + +

+Acceptable indices serve to avoid extra tests +against the stack top when querying the stack. +For instance, a C function can query its third argument +without the need to first check whether there is a third argument, +that is, without the need to check whether 3 is a valid index. + + +

+For functions that can be called with acceptable indices, +any non-valid index is treated as if it +contains a value of a virtual type LUA_TNONE, +which behaves like a nil value. + + + + + +

4.4 – C Closures

+ +

+When a C function is created, +it is possible to associate some values with it, +thus creating a C closure +(see lua_pushcclosure); +these values are called upvalues and are +accessible to the function whenever it is called. + + +

+Whenever a C function is called, +its upvalues are located at specific pseudo-indices. +These pseudo-indices are produced by the macro +lua_upvalueindex. +The first upvalue associated with a function is at index +lua_upvalueindex(1), and so on. +Any access to lua_upvalueindex(n), +where n is greater than the number of upvalues of the +current function +(but not greater than 256, +which is one plus the maximum number of upvalues in a closure), +produces an acceptable but invalid index. + + + + + +

4.5 – Registry

+ +

+Lua provides a registry, +a predefined table that can be used by any C code to +store whatever Lua values it needs to store. +The registry table is always located at pseudo-index +LUA_REGISTRYINDEX. +Any C library can store data into this table, +but it must take care to choose keys +that are different from those used +by other libraries, to avoid collisions. +Typically, you should use as key a string containing your library name, +or a light userdata with the address of a C object in your code, +or any Lua object created by your code. +As with variable names, +string keys starting with an underscore followed by +uppercase letters are reserved for Lua. + + +

+The integer keys in the registry are used +by the reference mechanism (see luaL_ref) +and by some predefined values. +Therefore, integer keys must not be used for other purposes. + + +

+When you create a new Lua state, +its registry comes with some predefined values. +These predefined values are indexed with integer keys +defined as constants in lua.h. +The following constants are defined: + +

    +
  • LUA_RIDX_MAINTHREAD: At this index the registry has +the main thread of the state. +(The main thread is the one created together with the state.) +
    • + +
  • LUA_RIDX_GLOBALS: At this index the registry has +the global environment. +
    • +
+ + + + +

4.6 – Error Handling in C

+ +

+Internally, Lua uses the C longjmp facility to handle errors. +(Lua will use exceptions if you compile it as C++; +search for LUAI_THROW in the source code for details.) +When Lua faces any error +(such as a memory allocation error or a type error) +it raises an error; +that is, it does a long jump. +A protected environment uses setjmp +to set a recovery point; +any error jumps to the most recent active recovery point. + + +

+Inside a C function you can raise an error by calling lua_error. + + +

+Most functions in the API can raise an error, +for instance due to a memory allocation error. +The documentation for each function indicates whether +it can raise errors. + + +

+If an error happens outside any protected environment, +Lua calls a panic function (see lua_atpanic) +and then calls abort, +thus exiting the host application. +Your panic function can avoid this exit by +never returning +(e.g., doing a long jump to your own recovery point outside Lua). + + +

+The panic function, +as its name implies, +is a mechanism of last resort. +Programs should avoid it. +As a general rule, +when a C function is called by Lua with a Lua state, +it can do whatever it wants on that Lua state, +as it should be already protected. +However, +when C code operates on other Lua states +(e.g., a Lua parameter to the function, +a Lua state stored in the registry, or +the result of lua_newthread), +it should use them only in API calls that cannot raise errors. + + +

+The panic function runs as if it were a message handler (see §2.3); +in particular, the error object is at the top of the stack. +However, there is no guarantee about stack space. +To push anything on the stack, +the panic function must first check the available space (see §4.2). + + + + + +

4.7 – Handling Yields in C

+ +

+Internally, Lua uses the C longjmp facility to yield a coroutine. +Therefore, if a C function foo calls an API function +and this API function yields +(directly or indirectly by calling another function that yields), +Lua cannot return to foo any more, +because the longjmp removes its frame from the C stack. + + +

+To avoid this kind of problem, +Lua raises an error whenever it tries to yield across an API call, +except for three functions: +lua_yieldk, lua_callk, and lua_pcallk. +All those functions receive a continuation function +(as a parameter named k) to continue execution after a yield. + + +

+We need to set some terminology to explain continuations. +We have a C function called from Lua which we will call +the original function. +This original function then calls one of those three functions in the C API, +which we will call the callee function, +that then yields the current thread. +(This can happen when the callee function is lua_yieldk, +or when the callee function is either lua_callk or lua_pcallk +and the function called by them yields.) + + +

+Suppose the running thread yields while executing the callee function. +After the thread resumes, +it eventually will finish running the callee function. +However, +the callee function cannot return to the original function, +because its frame in the C stack was destroyed by the yield. +Instead, Lua calls a continuation function, +which was given as an argument to the callee function. +As the name implies, +the continuation function should continue the task +of the original function. + + +

+As an illustration, consider the following function: + +

+     int original_function (lua_State *L) {
+       ...     /* code 1 */
+       status = lua_pcall(L, n, m, h);  /* calls Lua */
+       ...     /* code 2 */
+     }
+

+Now we want to allow +the Lua code being run by lua_pcall to yield. +First, we can rewrite our function like here: + +

+     int k (lua_State *L, int status, lua_KContext ctx) {
+       ...  /* code 2 */
+     }
+     
+     int original_function (lua_State *L) {
+       ...     /* code 1 */
+       return k(L, lua_pcall(L, n, m, h), ctx);
+     }
+

+In the above code, +the new function k is a +continuation function (with type lua_KFunction), +which should do all the work that the original function +was doing after calling lua_pcall. +Now, we must inform Lua that it must call k if the Lua code +being executed by lua_pcall gets interrupted in some way +(errors or yielding), +so we rewrite the code as here, +replacing lua_pcall by lua_pcallk: + +

+     int original_function (lua_State *L) {
+       ...     /* code 1 */
+       return k(L, lua_pcallk(L, n, m, h, ctx2, k), ctx1);
+     }
+

+Note the external, explicit call to the continuation: +Lua will call the continuation only if needed, that is, +in case of errors or resuming after a yield. +If the called function returns normally without ever yielding, +lua_pcallk (and lua_callk) will also return normally. +(Of course, instead of calling the continuation in that case, +you can do the equivalent work directly inside the original function.) + + +

+Besides the Lua state, +the continuation function has two other parameters: +the final status of the call plus the context value (ctx) that +was passed originally to lua_pcallk. +(Lua does not use this context value; +it only passes this value from the original function to the +continuation function.) +For lua_pcallk, +the status is the same value that would be returned by lua_pcallk, +except that it is LUA_YIELD when being executed after a yield +(instead of LUA_OK). +For lua_yieldk and lua_callk, +the status is always LUA_YIELD when Lua calls the continuation. +(For these two functions, +Lua will not call the continuation in case of errors, +because they do not handle errors.) +Similarly, when using lua_callk, +you should call the continuation function +with LUA_OK as the status. +(For lua_yieldk, there is not much point in calling +directly the continuation function, +because lua_yieldk usually does not return.) + + +

+Lua treats the continuation function as if it were the original function. +The continuation function receives the same Lua stack +from the original function, +in the same state it would be if the callee function had returned. +(For instance, +after a lua_callk the function and its arguments are +removed from the stack and replaced by the results from the call.) +It also has the same upvalues. +Whatever it returns is handled by Lua as if it were the return +of the original function. + + + + + +

4.8 – Functions and Types

+ +

+Here we list all functions and types from the C API in +alphabetical order. +Each function has an indicator like this: +[-o, +p, x] + + +

+The first field, o, +is how many elements the function pops from the stack. +The second field, p, +is how many elements the function pushes onto the stack. +(Any function always pushes its results after popping its arguments.) +A field in the form x|y means the function can push (or pop) +x or y elements, +depending on the situation; +an interrogation mark '?' means that +we cannot know how many elements the function pops/pushes +by looking only at its arguments +(e.g., they may depend on what is on the stack). +The third field, x, +tells whether the function may raise errors: +'-' means the function never raises any error; +'m' means the function may raise out-of-memory errors +and errors running a __gc metamethod; +'e' means the function may raise any errors +(it can run arbitrary Lua code, +either directly or through metamethods); +'v' means the function may raise an error on purpose. + + + +

lua_absindex

+[-0, +0, –] +

int lua_absindex (lua_State *L, int idx);
+ +

+Converts the acceptable index idx +into an equivalent absolute index +(that is, one that does not depend on the stack top). + + + + + +

lua_Alloc

+
typedef void * (*lua_Alloc) (void *ud,
+                             void *ptr,
+                             size_t osize,
+                             size_t nsize);
+ +

+The type of the memory-allocation function used by Lua states. +The allocator function must provide a +functionality similar to realloc, +but not exactly the same. +Its arguments are +ud, an opaque pointer passed to lua_newstate; +ptr, a pointer to the block being allocated/reallocated/freed; +osize, the original size of the block or some code about what +is being allocated; +and nsize, the new size of the block. + + +

+When ptr is not NULL, +osize is the size of the block pointed by ptr, +that is, the size given when it was allocated or reallocated. + + +

+When ptr is NULL, +osize encodes the kind of object that Lua is allocating. +osize is any of +LUA_TSTRING, LUA_TTABLE, LUA_TFUNCTION, +LUA_TUSERDATA, or LUA_TTHREAD when (and only when) +Lua is creating a new object of that type. +When osize is some other value, +Lua is allocating memory for something else. + + +

+Lua assumes the following behavior from the allocator function: + + +

+When nsize is zero, +the allocator must behave like free +and return NULL. + + +

+When nsize is not zero, +the allocator must behave like realloc. +The allocator returns NULL +if and only if it cannot fulfill the request. +Lua assumes that the allocator never fails when +osize >= nsize. + + +

+Here is a simple implementation for the allocator function. +It is used in the auxiliary library by luaL_newstate. + +

+     static void *l_alloc (void *ud, void *ptr, size_t osize,
+                                                size_t nsize) {
+       (void)ud;  (void)osize;  /* not used */
+       if (nsize == 0) {
+         free(ptr);
+         return NULL;
+       }
+       else
+         return realloc(ptr, nsize);
+     }
+

+Note that Standard C ensures +that free(NULL) has no effect and that +realloc(NULL,size) is equivalent to malloc(size). +This code assumes that realloc does not fail when shrinking a block. +(Although Standard C does not ensure this behavior, +it seems to be a safe assumption.) + + + + + +

lua_arith

+[-(2|1), +1, e] +

void lua_arith (lua_State *L, int op);
+ +

+Performs an arithmetic or bitwise operation over the two values +(or one, in the case of negations) +at the top of the stack, +with the value at the top being the second operand, +pops these values, and pushes the result of the operation. +The function follows the semantics of the corresponding Lua operator +(that is, it may call metamethods). + + +

+The value of op must be one of the following constants: + +

+ + + + +

lua_atpanic

+[-0, +0, –] +

lua_CFunction lua_atpanic (lua_State *L, lua_CFunction panicf);
+ +

+Sets a new panic function and returns the old one (see §4.6). + + + + + +

lua_call

+[-(nargs+1), +nresults, e] +

void lua_call (lua_State *L, int nargs, int nresults);
+ +

+Calls a function. + + +

+To call a function you must use the following protocol: +first, the function to be called is pushed onto the stack; +then, the arguments to the function are pushed +in direct order; +that is, the first argument is pushed first. +Finally you call lua_call; +nargs is the number of arguments that you pushed onto the stack. +All arguments and the function value are popped from the stack +when the function is called. +The function results are pushed onto the stack when the function returns. +The number of results is adjusted to nresults, +unless nresults is LUA_MULTRET. +In this case, all results from the function are pushed; +Lua takes care that the returned values fit into the stack space, +but it does not ensure any extra space in the stack. +The function results are pushed onto the stack in direct order +(the first result is pushed first), +so that after the call the last result is on the top of the stack. + + +

+Any error inside the called function is propagated upwards +(with a longjmp). + + +

+The following example shows how the host program can do the +equivalent to this Lua code: + +

+     a = f("how", t.x, 14)
+

+Here it is in C: + +

+     lua_getglobal(L, "f");                  /* function to be called */
+     lua_pushliteral(L, "how");                       /* 1st argument */
+     lua_getglobal(L, "t");                    /* table to be indexed */
+     lua_getfield(L, -1, "x");        /* push result of t.x (2nd arg) */
+     lua_remove(L, -2);                  /* remove 't' from the stack */
+     lua_pushinteger(L, 14);                          /* 3rd argument */
+     lua_call(L, 3, 1);     /* call 'f' with 3 arguments and 1 result */
+     lua_setglobal(L, "a");                         /* set global 'a' */
+

+Note that the code above is balanced: +at its end, the stack is back to its original configuration. +This is considered good programming practice. + + + + + +

lua_callk

+[-(nargs + 1), +nresults, e] +

void lua_callk (lua_State *L,
+                int nargs,
+                int nresults,
+                lua_KContext ctx,
+                lua_KFunction k);
+ +

+This function behaves exactly like lua_call, +but allows the called function to yield (see §4.7). + + + + + +

lua_CFunction

+
typedef int (*lua_CFunction) (lua_State *L);
+ +

+Type for C functions. + + +

+In order to communicate properly with Lua, +a C function must use the following protocol, +which defines the way parameters and results are passed: +a C function receives its arguments from Lua in its stack +in direct order (the first argument is pushed first). +So, when the function starts, +lua_gettop(L) returns the number of arguments received by the function. +The first argument (if any) is at index 1 +and its last argument is at index lua_gettop(L). +To return values to Lua, a C function just pushes them onto the stack, +in direct order (the first result is pushed first), +and returns the number of results. +Any other value in the stack below the results will be properly +discarded by Lua. +Like a Lua function, a C function called by Lua can also return +many results. + + +

+As an example, the following function receives a variable number +of numeric arguments and returns their average and their sum: + +

+     static int foo (lua_State *L) {
+       int n = lua_gettop(L);    /* number of arguments */
+       lua_Number sum = 0.0;
+       int i;
+       for (i = 1; i <= n; i++) {
+         if (!lua_isnumber(L, i)) {
+           lua_pushliteral(L, "incorrect argument");
+           lua_error(L);
+         }
+         sum += lua_tonumber(L, i);
+       }
+       lua_pushnumber(L, sum/n);        /* first result */
+       lua_pushnumber(L, sum);         /* second result */
+       return 2;                   /* number of results */
+     }
+
+ + + + +

lua_checkstack

+[-0, +0, –] +

int lua_checkstack (lua_State *L, int n);
+ +

+Ensures that the stack has space for at least n extra slots +(that is, that you can safely push up to n values into it). +It returns false if it cannot fulfill the request, +either because it would cause the stack +to be larger than a fixed maximum size +(typically at least several thousand elements) or +because it cannot allocate memory for the extra space. +This function never shrinks the stack; +if the stack already has space for the extra slots, +it is left unchanged. + + + + + +

lua_close

+[-0, +0, –] +

void lua_close (lua_State *L);
+ +

+Destroys all objects in the given Lua state +(calling the corresponding garbage-collection metamethods, if any) +and frees all dynamic memory used by this state. +On several platforms, you may not need to call this function, +because all resources are naturally released when the host program ends. +On the other hand, long-running programs that create multiple states, +such as daemons or web servers, +will probably need to close states as soon as they are not needed. + + + + + +

lua_compare

+[-0, +0, e] +

int lua_compare (lua_State *L, int index1, int index2, int op);
+ +

+Compares two Lua values. +Returns 1 if the value at index index1 satisfies op +when compared with the value at index index2, +following the semantics of the corresponding Lua operator +(that is, it may call metamethods). +Otherwise returns 0. +Also returns 0 if any of the indices is not valid. + + +

+The value of op must be one of the following constants: + +

    + +
  • LUA_OPEQ: compares for equality (==)
    • +
  • LUA_OPLT: compares for less than (<)
    • +
  • LUA_OPLE: compares for less or equal (<=)
    • + +
+ + + + +

lua_concat

+[-n, +1, e] +

void lua_concat (lua_State *L, int n);
+ +

+Concatenates the n values at the top of the stack, +pops them, and leaves the result at the top. +If n is 1, the result is the single value on the stack +(that is, the function does nothing); +if n is 0, the result is the empty string. +Concatenation is performed following the usual semantics of Lua +(see §3.4.6). + + + + + +

lua_copy

+[-0, +0, –] +

void lua_copy (lua_State *L, int fromidx, int toidx);
+ +

+Copies the element at index fromidx +into the valid index toidx, +replacing the value at that position. +Values at other positions are not affected. + + + + + +

lua_createtable

+[-0, +1, m] +

void lua_createtable (lua_State *L, int narr, int nrec);
+ +

+Creates a new empty table and pushes it onto the stack. +Parameter narr is a hint for how many elements the table +will have as a sequence; +parameter nrec is a hint for how many other elements +the table will have. +Lua may use these hints to preallocate memory for the new table. +This preallocation is useful for performance when you know in advance +how many elements the table will have. +Otherwise you can use the function lua_newtable. + + + + + +

lua_dump

+[-0, +0, –] +

int lua_dump (lua_State *L,
+                        lua_Writer writer,
+                        void *data,
+                        int strip);
+ +

+Dumps a function as a binary chunk. +Receives a Lua function on the top of the stack +and produces a binary chunk that, +if loaded again, +results in a function equivalent to the one dumped. +As it produces parts of the chunk, +lua_dump calls function writer (see lua_Writer) +with the given data +to write them. + + +

+If strip is true, +the binary representation may not include all debug information +about the function, +to save space. + + +

+The value returned is the error code returned by the last +call to the writer; +0 means no errors. + + +

+This function does not pop the Lua function from the stack. + + + + + +

lua_error

+[-1, +0, v] +

int lua_error (lua_State *L);
+ +

+Generates a Lua error, +using the value at the top of the stack as the error object. +This function does a long jump, +and therefore never returns +(see luaL_error). + + + + + +

lua_gc

+[-0, +0, m] +

int lua_gc (lua_State *L, int what, int data);
+ +

+Controls the garbage collector. + + +

+This function performs several tasks, +according to the value of the parameter what: + +

    + +
  • LUA_GCSTOP: +stops the garbage collector. +
    • + +
  • LUA_GCRESTART: +restarts the garbage collector. +
    • + +
  • LUA_GCCOLLECT: +performs a full garbage-collection cycle. +
    • + +
  • LUA_GCCOUNT: +returns the current amount of memory (in Kbytes) in use by Lua. +
    • + +
  • LUA_GCCOUNTB: +returns the remainder of dividing the current amount of bytes of +memory in use by Lua by 1024. +
    • + +
  • LUA_GCSTEP: +performs an incremental step of garbage collection. +
    • + +
  • LUA_GCSETPAUSE: +sets data as the new value +for the pause of the collector (see §2.5) +and returns the previous value of the pause. +
    • + +
  • LUA_GCSETSTEPMUL: +sets data as the new value for the step multiplier of +the collector (see §2.5) +and returns the previous value of the step multiplier. +
    • + +
  • LUA_GCISRUNNING: +returns a boolean that tells whether the collector is running +(i.e., not stopped). +
    • + +
+ +

+For more details about these options, +see collectgarbage. + + + + + +

lua_getallocf

+[-0, +0, –] +

lua_Alloc lua_getallocf (lua_State *L, void **ud);
+ +

+Returns the memory-allocation function of a given state. +If ud is not NULL, Lua stores in *ud the +opaque pointer given when the memory-allocator function was set. + + + + + +

lua_getfield

+[-0, +1, e] +

int lua_getfield (lua_State *L, int index, const char *k);
+ +

+Pushes onto the stack the value t[k], +where t is the value at the given index. +As in Lua, this function may trigger a metamethod +for the "index" event (see §2.4). + + +

+Returns the type of the pushed value. + + + + + +

lua_getextraspace

+[-0, +0, –] +

void *lua_getextraspace (lua_State *L);
+ +

+Returns a pointer to a raw memory area associated with the +given Lua state. +The application can use this area for any purpose; +Lua does not use it for anything. + + +

+Each new thread has this area initialized with a copy +of the area of the main thread. + + +

+By default, this area has the size of a pointer to void, +but you can recompile Lua with a different size for this area. +(See LUA_EXTRASPACE in luaconf.h.) + + + + + +

lua_getglobal

+[-0, +1, e] +

int lua_getglobal (lua_State *L, const char *name);
+ +

+Pushes onto the stack the value of the global name. +Returns the type of that value. + + + + + +

lua_geti

+[-0, +1, e] +

int lua_geti (lua_State *L, int index, lua_Integer i);
+ +

+Pushes onto the stack the value t[i], +where t is the value at the given index. +As in Lua, this function may trigger a metamethod +for the "index" event (see §2.4). + + +

+Returns the type of the pushed value. + + + + + +

lua_getmetatable

+[-0, +(0|1), –] +

int lua_getmetatable (lua_State *L, int index);
+ +

+If the value at the given index has a metatable, +the function pushes that metatable onto the stack and returns 1. +Otherwise, +the function returns 0 and pushes nothing on the stack. + + + + + +

lua_gettable

+[-1, +1, e] +

int lua_gettable (lua_State *L, int index);
+ +

+Pushes onto the stack the value t[k], +where t is the value at the given index +and k is the value at the top of the stack. + + +

+This function pops the key from the stack, +pushing the resulting value in its place. +As in Lua, this function may trigger a metamethod +for the "index" event (see §2.4). + + +

+Returns the type of the pushed value. + + + + + +

lua_gettop

+[-0, +0, –] +

int lua_gettop (lua_State *L);
+ +

+Returns the index of the top element in the stack. +Because indices start at 1, +this result is equal to the number of elements in the stack; +in particular, 0 means an empty stack. + + + + + +

lua_getuservalue

+[-0, +1, –] +

int lua_getuservalue (lua_State *L, int index);
+ +

+Pushes onto the stack the Lua value associated with the full userdata +at the given index. + + +

+Returns the type of the pushed value. + + + + + +

lua_insert

+[-1, +1, –] +

void lua_insert (lua_State *L, int index);
+ +

+Moves the top element into the given valid index, +shifting up the elements above this index to open space. +This function cannot be called with a pseudo-index, +because a pseudo-index is not an actual stack position. + + + + + +

lua_Integer

+
typedef ... lua_Integer;
+ +

+The type of integers in Lua. + + +

+By default this type is long long, +(usually a 64-bit two-complement integer), +but that can be changed to long or int +(usually a 32-bit two-complement integer). +(See LUA_INT_TYPE in luaconf.h.) + + +

+Lua also defines the constants +LUA_MININTEGER and LUA_MAXINTEGER, +with the minimum and the maximum values that fit in this type. + + + + + +

lua_isboolean

+[-0, +0, –] +

int lua_isboolean (lua_State *L, int index);
+ +

+Returns 1 if the value at the given index is a boolean, +and 0 otherwise. + + + + + +

lua_iscfunction

+[-0, +0, –] +

int lua_iscfunction (lua_State *L, int index);
+ +

+Returns 1 if the value at the given index is a C function, +and 0 otherwise. + + + + + +

lua_isfunction

+[-0, +0, –] +

int lua_isfunction (lua_State *L, int index);
+ +

+Returns 1 if the value at the given index is a function +(either C or Lua), and 0 otherwise. + + + + + +

lua_isinteger

+[-0, +0, –] +

int lua_isinteger (lua_State *L, int index);
+ +

+Returns 1 if the value at the given index is an integer +(that is, the value is a number and is represented as an integer), +and 0 otherwise. + + + + + +

lua_islightuserdata

+[-0, +0, –] +

int lua_islightuserdata (lua_State *L, int index);
+ +

+Returns 1 if the value at the given index is a light userdata, +and 0 otherwise. + + + + + +

lua_isnil

+[-0, +0, –] +

int lua_isnil (lua_State *L, int index);
+ +

+Returns 1 if the value at the given index is nil, +and 0 otherwise. + + + + + +

lua_isnone

+[-0, +0, –] +

int lua_isnone (lua_State *L, int index);
+ +

+Returns 1 if the given index is not valid, +and 0 otherwise. + + + + + +

lua_isnoneornil

+[-0, +0, –] +

int lua_isnoneornil (lua_State *L, int index);
+ +

+Returns 1 if the given index is not valid +or if the value at this index is nil, +and 0 otherwise. + + + + + +

lua_isnumber

+[-0, +0, –] +

int lua_isnumber (lua_State *L, int index);
+ +

+Returns 1 if the value at the given index is a number +or a string convertible to a number, +and 0 otherwise. + + + + + +

lua_isstring

+[-0, +0, –] +

int lua_isstring (lua_State *L, int index);
+ +

+Returns 1 if the value at the given index is a string +or a number (which is always convertible to a string), +and 0 otherwise. + + + + + +

lua_istable

+[-0, +0, –] +

int lua_istable (lua_State *L, int index);
+ +

+Returns 1 if the value at the given index is a table, +and 0 otherwise. + + + + + +

lua_isthread

+[-0, +0, –] +

int lua_isthread (lua_State *L, int index);
+ +

+Returns 1 if the value at the given index is a thread, +and 0 otherwise. + + + + + +

lua_isuserdata

+[-0, +0, –] +

int lua_isuserdata (lua_State *L, int index);
+ +

+Returns 1 if the value at the given index is a userdata +(either full or light), and 0 otherwise. + + + + + +

lua_isyieldable

+[-0, +0, –] +

int lua_isyieldable (lua_State *L);
+ +

+Returns 1 if the given coroutine can yield, +and 0 otherwise. + + + + + +

lua_KContext

+
typedef ... lua_KContext;
+ +

+The type for continuation-function contexts. +It must be a numeric type. +This type is defined as intptr_t +when intptr_t is available, +so that it can store pointers too. +Otherwise, it is defined as ptrdiff_t. + + + + + +

lua_KFunction

+
typedef int (*lua_KFunction) (lua_State *L, int status, lua_KContext ctx);
+ +

+Type for continuation functions (see §4.7). + + + + + +

lua_len

+[-0, +1, e] +

void lua_len (lua_State *L, int index);
+ +

+Returns the length of the value at the given index. +It is equivalent to the '#' operator in Lua (see §3.4.7) and +may trigger a metamethod for the "length" event (see §2.4). +The result is pushed on the stack. + + + + + +

lua_load

+[-0, +1, –] +

int lua_load (lua_State *L,
+              lua_Reader reader,
+              void *data,
+              const char *chunkname,
+              const char *mode);
+ +

+Loads a Lua chunk without running it. +If there are no errors, +lua_load pushes the compiled chunk as a Lua +function on top of the stack. +Otherwise, it pushes an error message. + + +

+The return values of lua_load are: + +

    + +
  • LUA_OK: no errors;
    • + +
  • LUA_ERRSYNTAX: +syntax error during precompilation;
    • + +
  • LUA_ERRMEM: +memory allocation (out-of-memory) error;
    • + +
  • LUA_ERRGCMM: +error while running a __gc metamethod. +(This error has no relation with the chunk being loaded. +It is generated by the garbage collector.) +
    • + +
+ +

+The lua_load function uses a user-supplied reader function +to read the chunk (see lua_Reader). +The data argument is an opaque value passed to the reader function. + + +

+The chunkname argument gives a name to the chunk, +which is used for error messages and in debug information (see §4.9). + + +

+lua_load automatically detects whether the chunk is text or binary +and loads it accordingly (see program luac). +The string mode works as in function load, +with the addition that +a NULL value is equivalent to the string "bt". + + +

+lua_load uses the stack internally, +so the reader function must always leave the stack +unmodified when returning. + + +

+If the resulting function has upvalues, +its first upvalue is set to the value of the global environment +stored at index LUA_RIDX_GLOBALS in the registry (see §4.5). +When loading main chunks, +this upvalue will be the _ENV variable (see §2.2). +Other upvalues are initialized with nil. + + + + + +

lua_newstate

+[-0, +0, –] +

lua_State *lua_newstate (lua_Alloc f, void *ud);
+ +

+Creates a new thread running in a new, independent state. +Returns NULL if it cannot create the thread or the state +(due to lack of memory). +The argument f is the allocator function; +Lua does all memory allocation for this state +through this function (see lua_Alloc). +The second argument, ud, is an opaque pointer that Lua +passes to the allocator in every call. + + + + + +

lua_newtable

+[-0, +1, m] +

void lua_newtable (lua_State *L);
+ +

+Creates a new empty table and pushes it onto the stack. +It is equivalent to lua_createtable(L, 0, 0). + + + + + +

lua_newthread

+[-0, +1, m] +

lua_State *lua_newthread (lua_State *L);
+ +

+Creates a new thread, pushes it on the stack, +and returns a pointer to a lua_State that represents this new thread. +The new thread returned by this function shares with the original thread +its global environment, +but has an independent execution stack. + + +

+There is no explicit function to close or to destroy a thread. +Threads are subject to garbage collection, +like any Lua object. + + + + + +

lua_newuserdata

+[-0, +1, m] +

void *lua_newuserdata (lua_State *L, size_t size);
+ +

+This function allocates a new block of memory with the given size, +pushes onto the stack a new full userdata with the block address, +and returns this address. +The host program can freely use this memory. + + + + + +

lua_next

+[-1, +(2|0), e] +

int lua_next (lua_State *L, int index);
+ +

+Pops a key from the stack, +and pushes a key–value pair from the table at the given index +(the "next" pair after the given key). +If there are no more elements in the table, +then lua_next returns 0 (and pushes nothing). + + +

+A typical traversal looks like this: + +

+     /* table is in the stack at index 't' */
+     lua_pushnil(L);  /* first key */
+     while (lua_next(L, t) != 0) {
+       /* uses 'key' (at index -2) and 'value' (at index -1) */
+       printf("%s - %s\n",
+              lua_typename(L, lua_type(L, -2)),
+              lua_typename(L, lua_type(L, -1)));
+       /* removes 'value'; keeps 'key' for next iteration */
+       lua_pop(L, 1);
+     }
+
+ +

+While traversing a table, +do not call lua_tolstring directly on a key, +unless you know that the key is actually a string. +Recall that lua_tolstring may change +the value at the given index; +this confuses the next call to lua_next. + + +

+See function next for the caveats of modifying +the table during its traversal. + + + + + +

lua_Number

+
typedef ... lua_Number;
+ +

+The type of floats in Lua. + + +

+By default this type is double, +but that can be changed to a single float or a long double. +(See LUA_FLOAT_TYPE in luaconf.h.) + + + + + +

lua_numbertointeger

+
int lua_numbertointeger (lua_Number n, lua_Integer *p);
+ +

+Converts a Lua float to a Lua integer. +This macro assumes that n has an integral value. +If that value is within the range of Lua integers, +it is converted to an integer and assigned to *p. +The macro results in a boolean indicating whether the +conversion was successful. +(Note that this range test can be tricky to do +correctly without this macro, +due to roundings.) + + +

+This macro may evaluate its arguments more than once. + + + + + +

lua_pcall

+[-(nargs + 1), +(nresults|1), –] +

int lua_pcall (lua_State *L, int nargs, int nresults, int msgh);
+ +

+Calls a function in protected mode. + + +

+Both nargs and nresults have the same meaning as +in lua_call. +If there are no errors during the call, +lua_pcall behaves exactly like lua_call. +However, if there is any error, +lua_pcall catches it, +pushes a single value on the stack (the error object), +and returns an error code. +Like lua_call, +lua_pcall always removes the function +and its arguments from the stack. + + +

+If msgh is 0, +then the error object returned on the stack +is exactly the original error object. +Otherwise, msgh is the stack index of a +message handler. +(This index cannot be a pseudo-index.) +In case of runtime errors, +this function will be called with the error object +and its return value will be the object +returned on the stack by lua_pcall. + + +

+Typically, the message handler is used to add more debug +information to the error object, such as a stack traceback. +Such information cannot be gathered after the return of lua_pcall, +since by then the stack has unwound. + + +

+The lua_pcall function returns one of the following constants +(defined in lua.h): + +

    + +
  • LUA_OK (0): +success.
    • + +
  • LUA_ERRRUN: +a runtime error. +
    • + +
  • LUA_ERRMEM: +memory allocation error. +For such errors, Lua does not call the message handler. +
    • + +
  • LUA_ERRERR: +error while running the message handler. +
    • + +
  • LUA_ERRGCMM: +error while running a __gc metamethod. +For such errors, Lua does not call the message handler +(as this kind of error typically has no relation +with the function being called). +
    • + +
+ + + + +

lua_pcallk

+[-(nargs + 1), +(nresults|1), –] +

int lua_pcallk (lua_State *L,
+                int nargs,
+                int nresults,
+                int msgh,
+                lua_KContext ctx,
+                lua_KFunction k);
+ +

+This function behaves exactly like lua_pcall, +but allows the called function to yield (see §4.7). + + + + + +

lua_pop

+[-n, +0, –] +

void lua_pop (lua_State *L, int n);
+ +

+Pops n elements from the stack. + + + + + +

lua_pushboolean

+[-0, +1, –] +

void lua_pushboolean (lua_State *L, int b);
+ +

+Pushes a boolean value with value b onto the stack. + + + + + +

lua_pushcclosure

+[-n, +1, m] +

void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n);
+ +

+Pushes a new C closure onto the stack. + + +

+When a C function is created, +it is possible to associate some values with it, +thus creating a C closure (see §4.4); +these values are then accessible to the function whenever it is called. +To associate values with a C function, +first these values must be pushed onto the stack +(when there are multiple values, the first value is pushed first). +Then lua_pushcclosure +is called to create and push the C function onto the stack, +with the argument n telling how many values will be +associated with the function. +lua_pushcclosure also pops these values from the stack. + + +

+The maximum value for n is 255. + + +

+When n is zero, +this function creates a light C function, +which is just a pointer to the C function. +In that case, it never raises a memory error. + + + + + +

lua_pushcfunction

+[-0, +1, –] +

void lua_pushcfunction (lua_State *L, lua_CFunction f);
+ +

+Pushes a C function onto the stack. +This function receives a pointer to a C function +and pushes onto the stack a Lua value of type function that, +when called, invokes the corresponding C function. + + +

+Any function to be callable by Lua must +follow the correct protocol to receive its parameters +and return its results (see lua_CFunction). + + + + + +

lua_pushfstring

+[-0, +1, e] +

const char *lua_pushfstring (lua_State *L, const char *fmt, ...);
+ +

+Pushes onto the stack a formatted string +and returns a pointer to this string. +It is similar to the ISO C function sprintf, +but has some important differences: + +

    + +
  • +You do not have to allocate space for the result: +the result is a Lua string and Lua takes care of memory allocation +(and deallocation, through garbage collection). +
    • + +
  • +The conversion specifiers are quite restricted. +There are no flags, widths, or precisions. +The conversion specifiers can only be +'%%' (inserts the character '%'), +'%s' (inserts a zero-terminated string, with no size restrictions), +'%f' (inserts a lua_Number), +'%I' (inserts a lua_Integer), +'%p' (inserts a pointer as a hexadecimal numeral), +'%d' (inserts an int), +'%c' (inserts an int as a one-byte character), and +'%U' (inserts a long int as a UTF-8 byte sequence). +
    • + +
+ +

+Unlike other push functions, +this function checks for the stack space it needs, +including the slot for its result. + + + + + +

lua_pushglobaltable

+[-0, +1, –] +

void lua_pushglobaltable (lua_State *L);
+ +

+Pushes the global environment onto the stack. + + + + + +

lua_pushinteger

+[-0, +1, –] +

void lua_pushinteger (lua_State *L, lua_Integer n);
+ +

+Pushes an integer with value n onto the stack. + + + + + +

lua_pushlightuserdata

+[-0, +1, –] +

void lua_pushlightuserdata (lua_State *L, void *p);
+ +

+Pushes a light userdata onto the stack. + + +

+Userdata represent C values in Lua. +A light userdata represents a pointer, a void*. +It is a value (like a number): +you do not create it, it has no individual metatable, +and it is not collected (as it was never created). +A light userdata is equal to "any" +light userdata with the same C address. + + + + + +

lua_pushliteral

+[-0, +1, m] +

const char *lua_pushliteral (lua_State *L, const char *s);
+ +

+This macro is equivalent to lua_pushstring, +but should be used only when s is a literal string. + + + + + +

lua_pushlstring

+[-0, +1, m] +

const char *lua_pushlstring (lua_State *L, const char *s, size_t len);
+ +

+Pushes the string pointed to by s with size len +onto the stack. +Lua makes (or reuses) an internal copy of the given string, +so the memory at s can be freed or reused immediately after +the function returns. +The string can contain any binary data, +including embedded zeros. + + +

+Returns a pointer to the internal copy of the string. + + + + + +

lua_pushnil

+[-0, +1, –] +

void lua_pushnil (lua_State *L);
+ +

+Pushes a nil value onto the stack. + + + + + +

lua_pushnumber

+[-0, +1, –] +

void lua_pushnumber (lua_State *L, lua_Number n);
+ +

+Pushes a float with value n onto the stack. + + + + + +

lua_pushstring

+[-0, +1, m] +

const char *lua_pushstring (lua_State *L, const char *s);
+ +

+Pushes the zero-terminated string pointed to by s +onto the stack. +Lua makes (or reuses) an internal copy of the given string, +so the memory at s can be freed or reused immediately after +the function returns. + + +

+Returns a pointer to the internal copy of the string. + + +

+If s is NULL, pushes nil and returns NULL. + + + + + +

lua_pushthread

+[-0, +1, –] +

int lua_pushthread (lua_State *L);
+ +

+Pushes the thread represented by L onto the stack. +Returns 1 if this thread is the main thread of its state. + + + + + +

lua_pushvalue

+[-0, +1, –] +

void lua_pushvalue (lua_State *L, int index);
+ +

+Pushes a copy of the element at the given index +onto the stack. + + + + + +

lua_pushvfstring

+[-0, +1, m] +

const char *lua_pushvfstring (lua_State *L,
+                              const char *fmt,
+                              va_list argp);
+ +

+Equivalent to lua_pushfstring, except that it receives a va_list +instead of a variable number of arguments. + + + + + +

lua_rawequal

+[-0, +0, –] +

int lua_rawequal (lua_State *L, int index1, int index2);
+ +

+Returns 1 if the two values in indices index1 and +index2 are primitively equal +(that is, without calling the __eq metamethod). +Otherwise returns 0. +Also returns 0 if any of the indices are not valid. + + + + + +

lua_rawget

+[-1, +1, –] +

int lua_rawget (lua_State *L, int index);
+ +

+Similar to lua_gettable, but does a raw access +(i.e., without metamethods). + + + + + +

lua_rawgeti

+[-0, +1, –] +

int lua_rawgeti (lua_State *L, int index, lua_Integer n);
+ +

+Pushes onto the stack the value t[n], +where t is the table at the given index. +The access is raw, +that is, it does not invoke the __index metamethod. + + +

+Returns the type of the pushed value. + + + + + +

lua_rawgetp

+[-0, +1, –] +

int lua_rawgetp (lua_State *L, int index, const void *p);
+ +

+Pushes onto the stack the value t[k], +where t is the table at the given index and +k is the pointer p represented as a light userdata. +The access is raw; +that is, it does not invoke the __index metamethod. + + +

+Returns the type of the pushed value. + + + + + +

lua_rawlen

+[-0, +0, –] +

size_t lua_rawlen (lua_State *L, int index);
+ +

+Returns the raw "length" of the value at the given index: +for strings, this is the string length; +for tables, this is the result of the length operator ('#') +with no metamethods; +for userdata, this is the size of the block of memory allocated +for the userdata; +for other values, it is 0. + + + + + +

lua_rawset

+[-2, +0, m] +

void lua_rawset (lua_State *L, int index);
+ +

+Similar to lua_settable, but does a raw assignment +(i.e., without metamethods). + + + + + +

lua_rawseti

+[-1, +0, m] +

void lua_rawseti (lua_State *L, int index, lua_Integer i);
+ +

+Does the equivalent of t[i] = v, +where t is the table at the given index +and v is the value at the top of the stack. + + +

+This function pops the value from the stack. +The assignment is raw, +that is, it does not invoke the __newindex metamethod. + + + + + +

lua_rawsetp

+[-1, +0, m] +

void lua_rawsetp (lua_State *L, int index, const void *p);
+ +

+Does the equivalent of t[p] = v, +where t is the table at the given index, +p is encoded as a light userdata, +and v is the value at the top of the stack. + + +

+This function pops the value from the stack. +The assignment is raw, +that is, it does not invoke __newindex metamethod. + + + + + +

lua_Reader

+
typedef const char * (*lua_Reader) (lua_State *L,
+                                    void *data,
+                                    size_t *size);
+ +

+The reader function used by lua_load. +Every time it needs another piece of the chunk, +lua_load calls the reader, +passing along its data parameter. +The reader must return a pointer to a block of memory +with a new piece of the chunk +and set size to the block size. +The block must exist until the reader function is called again. +To signal the end of the chunk, +the reader must return NULL or set size to zero. +The reader function may return pieces of any size greater than zero. + + + + + +

lua_register

+[-0, +0, e] +

void lua_register (lua_State *L, const char *name, lua_CFunction f);
+ +

+Sets the C function f as the new value of global name. +It is defined as a macro: + +

+     #define lua_register(L,n,f) \
+            (lua_pushcfunction(L, f), lua_setglobal(L, n))
+
+ + + + +

lua_remove

+[-1, +0, –] +

void lua_remove (lua_State *L, int index);
+ +

+Removes the element at the given valid index, +shifting down the elements above this index to fill the gap. +This function cannot be called with a pseudo-index, +because a pseudo-index is not an actual stack position. + + + + + +

lua_replace

+[-1, +0, –] +

void lua_replace (lua_State *L, int index);
+ +

+Moves the top element into the given valid index +without shifting any element +(therefore replacing the value at that given index), +and then pops the top element. + + + + + +

lua_resume

+[-?, +?, –] +

int lua_resume (lua_State *L, lua_State *from, int nargs);
+ +

+Starts and resumes a coroutine in the given thread L. + + +

+To start a coroutine, +you push onto the thread stack the main function plus any arguments; +then you call lua_resume, +with nargs being the number of arguments. +This call returns when the coroutine suspends or finishes its execution. +When it returns, the stack contains all values passed to lua_yield, +or all values returned by the body function. +lua_resume returns +LUA_YIELD if the coroutine yields, +LUA_OK if the coroutine finishes its execution +without errors, +or an error code in case of errors (see lua_pcall). + + +

+In case of errors, +the stack is not unwound, +so you can use the debug API over it. +The error object is on the top of the stack. + + +

+To resume a coroutine, +you remove any results from the last lua_yield, +put on its stack only the values to +be passed as results from yield, +and then call lua_resume. + + +

+The parameter from represents the coroutine that is resuming L. +If there is no such coroutine, +this parameter can be NULL. + + + + + +

lua_rotate

+[-0, +0, –] +

void lua_rotate (lua_State *L, int idx, int n);
+ +

+Rotates the stack elements between the valid index idx +and the top of the stack. +The elements are rotated n positions in the direction of the top, +for a positive n, +or -n positions in the direction of the bottom, +for a negative n. +The absolute value of n must not be greater than the size +of the slice being rotated. +This function cannot be called with a pseudo-index, +because a pseudo-index is not an actual stack position. + + + + + +

lua_setallocf

+[-0, +0, –] +

void lua_setallocf (lua_State *L, lua_Alloc f, void *ud);
+ +

+Changes the allocator function of a given state to f +with user data ud. + + + + + +

lua_setfield

+[-1, +0, e] +

void lua_setfield (lua_State *L, int index, const char *k);
+ +

+Does the equivalent to t[k] = v, +where t is the value at the given index +and v is the value at the top of the stack. + + +

+This function pops the value from the stack. +As in Lua, this function may trigger a metamethod +for the "newindex" event (see §2.4). + + + + + +

lua_setglobal

+[-1, +0, e] +

void lua_setglobal (lua_State *L, const char *name);
+ +

+Pops a value from the stack and +sets it as the new value of global name. + + + + + +

lua_seti

+[-1, +0, e] +

void lua_seti (lua_State *L, int index, lua_Integer n);
+ +

+Does the equivalent to t[n] = v, +where t is the value at the given index +and v is the value at the top of the stack. + + +

+This function pops the value from the stack. +As in Lua, this function may trigger a metamethod +for the "newindex" event (see §2.4). + + + + + +

lua_setmetatable

+[-1, +0, –] +

void lua_setmetatable (lua_State *L, int index);
+ +

+Pops a table from the stack and +sets it as the new metatable for the value at the given index. + + + + + +

lua_settable

+[-2, +0, e] +

void lua_settable (lua_State *L, int index);
+ +

+Does the equivalent to t[k] = v, +where t is the value at the given index, +v is the value at the top of the stack, +and k is the value just below the top. + + +

+This function pops both the key and the value from the stack. +As in Lua, this function may trigger a metamethod +for the "newindex" event (see §2.4). + + + + + +

lua_settop

+[-?, +?, –] +

void lua_settop (lua_State *L, int index);
+ +

+Accepts any index, or 0, +and sets the stack top to this index. +If the new top is larger than the old one, +then the new elements are filled with nil. +If index is 0, then all stack elements are removed. + + + + + +

lua_setuservalue

+[-1, +0, –] +

void lua_setuservalue (lua_State *L, int index);
+ +

+Pops a value from the stack and sets it as +the new value associated to the full userdata at the given index. + + + + + +

lua_State

+
typedef struct lua_State lua_State;
+ +

+An opaque structure that points to a thread and indirectly +(through the thread) to the whole state of a Lua interpreter. +The Lua library is fully reentrant: +it has no global variables. +All information about a state is accessible through this structure. + + +

+A pointer to this structure must be passed as the first argument to +every function in the library, except to lua_newstate, +which creates a Lua state from scratch. + + + + + +

lua_status

+[-0, +0, –] +

int lua_status (lua_State *L);
+ +

+Returns the status of the thread L. + + +

+The status can be 0 (LUA_OK) for a normal thread, +an error code if the thread finished the execution +of a lua_resume with an error, +or LUA_YIELD if the thread is suspended. + + +

+You can only call functions in threads with status LUA_OK. +You can resume threads with status LUA_OK +(to start a new coroutine) or LUA_YIELD +(to resume a coroutine). + + + + + +

lua_stringtonumber

+[-0, +1, –] +

size_t lua_stringtonumber (lua_State *L, const char *s);
+ +

+Converts the zero-terminated string s to a number, +pushes that number into the stack, +and returns the total size of the string, +that is, its length plus one. +The conversion can result in an integer or a float, +according to the lexical conventions of Lua (see §3.1). +The string may have leading and trailing spaces and a sign. +If the string is not a valid numeral, +returns 0 and pushes nothing. +(Note that the result can be used as a boolean, +true if the conversion succeeds.) + + + + + +

lua_toboolean

+[-0, +0, –] +

int lua_toboolean (lua_State *L, int index);
+ +

+Converts the Lua value at the given index to a C boolean +value (0 or 1). +Like all tests in Lua, +lua_toboolean returns true for any Lua value +different from false and nil; +otherwise it returns false. +(If you want to accept only actual boolean values, +use lua_isboolean to test the value's type.) + + + + + +

lua_tocfunction

+[-0, +0, –] +

lua_CFunction lua_tocfunction (lua_State *L, int index);
+ +

+Converts a value at the given index to a C function. +That value must be a C function; +otherwise, returns NULL. + + + + + +

lua_tointeger

+[-0, +0, –] +

lua_Integer lua_tointeger (lua_State *L, int index);
+ +

+Equivalent to lua_tointegerx with isnum equal to NULL. + + + + + +

lua_tointegerx

+[-0, +0, –] +

lua_Integer lua_tointegerx (lua_State *L, int index, int *isnum);
+ +

+Converts the Lua value at the given index +to the signed integral type lua_Integer. +The Lua value must be an integer, +or a number or string convertible to an integer (see §3.4.3); +otherwise, lua_tointegerx returns 0. + + +

+If isnum is not NULL, +its referent is assigned a boolean value that +indicates whether the operation succeeded. + + + + + +

lua_tolstring

+[-0, +0, m] +

const char *lua_tolstring (lua_State *L, int index, size_t *len);
+ +

+Converts the Lua value at the given index to a C string. +If len is not NULL, +it sets *len with the string length. +The Lua value must be a string or a number; +otherwise, the function returns NULL. +If the value is a number, +then lua_tolstring also +changes the actual value in the stack to a string. +(This change confuses lua_next +when lua_tolstring is applied to keys during a table traversal.) + + +

+lua_tolstring returns a pointer +to a string inside the Lua state. +This string always has a zero ('\0') +after its last character (as in C), +but can contain other zeros in its body. + + +

+Because Lua has garbage collection, +there is no guarantee that the pointer returned by lua_tolstring +will be valid after the corresponding Lua value is removed from the stack. + + + + + +

lua_tonumber

+[-0, +0, –] +

lua_Number lua_tonumber (lua_State *L, int index);
+ +

+Equivalent to lua_tonumberx with isnum equal to NULL. + + + + + +

lua_tonumberx

+[-0, +0, –] +

lua_Number lua_tonumberx (lua_State *L, int index, int *isnum);
+ +

+Converts the Lua value at the given index +to the C type lua_Number (see lua_Number). +The Lua value must be a number or a string convertible to a number +(see §3.4.3); +otherwise, lua_tonumberx returns 0. + + +

+If isnum is not NULL, +its referent is assigned a boolean value that +indicates whether the operation succeeded. + + + + + +

lua_topointer

+[-0, +0, –] +

const void *lua_topointer (lua_State *L, int index);
+ +

+Converts the value at the given index to a generic +C pointer (void*). +The value can be a userdata, a table, a thread, or a function; +otherwise, lua_topointer returns NULL. +Different objects will give different pointers. +There is no way to convert the pointer back to its original value. + + +

+Typically this function is used only for hashing and debug information. + + + + + +

lua_tostring

+[-0, +0, m] +

const char *lua_tostring (lua_State *L, int index);
+ +

+Equivalent to lua_tolstring with len equal to NULL. + + + + + +

lua_tothread

+[-0, +0, –] +

lua_State *lua_tothread (lua_State *L, int index);
+ +

+Converts the value at the given index to a Lua thread +(represented as lua_State*). +This value must be a thread; +otherwise, the function returns NULL. + + + + + +

lua_touserdata

+[-0, +0, –] +

void *lua_touserdata (lua_State *L, int index);
+ +

+If the value at the given index is a full userdata, +returns its block address. +If the value is a light userdata, +returns its pointer. +Otherwise, returns NULL. + + + + + +

lua_type

+[-0, +0, –] +

int lua_type (lua_State *L, int index);
+ +

+Returns the type of the value in the given valid index, +or LUA_TNONE for a non-valid (but acceptable) index. +The types returned by lua_type are coded by the following constants +defined in lua.h: +LUA_TNIL (0), +LUA_TNUMBER, +LUA_TBOOLEAN, +LUA_TSTRING, +LUA_TTABLE, +LUA_TFUNCTION, +LUA_TUSERDATA, +LUA_TTHREAD, +and +LUA_TLIGHTUSERDATA. + + + + + +

lua_typename

+[-0, +0, –] +

const char *lua_typename (lua_State *L, int tp);
+ +

+Returns the name of the type encoded by the value tp, +which must be one the values returned by lua_type. + + + + + +

lua_Unsigned

+
typedef ... lua_Unsigned;
+ +

+The unsigned version of lua_Integer. + + + + + +

lua_upvalueindex

+[-0, +0, –] +

int lua_upvalueindex (int i);
+ +

+Returns the pseudo-index that represents the i-th upvalue of +the running function (see §4.4). + + + + + +

lua_version

+[-0, +0, –] +

const lua_Number *lua_version (lua_State *L);
+ +

+Returns the address of the version number +(a C static variable) +stored in the Lua core. +When called with a valid lua_State, +returns the address of the version used to create that state. +When called with NULL, +returns the address of the version running the call. + + + + + +

lua_Writer

+
typedef int (*lua_Writer) (lua_State *L,
+                           const void* p,
+                           size_t sz,
+                           void* ud);
+ +

+The type of the writer function used by lua_dump. +Every time it produces another piece of chunk, +lua_dump calls the writer, +passing along the buffer to be written (p), +its size (sz), +and the data parameter supplied to lua_dump. + + +

+The writer returns an error code: +0 means no errors; +any other value means an error and stops lua_dump from +calling the writer again. + + + + + +

lua_xmove

+[-?, +?, –] +

void lua_xmove (lua_State *from, lua_State *to, int n);
+ +

+Exchange values between different threads of the same state. + + +

+This function pops n values from the stack from, +and pushes them onto the stack to. + + + + + +

lua_yield

+[-?, +?, e] +

int lua_yield (lua_State *L, int nresults);
+ +

+This function is equivalent to lua_yieldk, +but it has no continuation (see §4.7). +Therefore, when the thread resumes, +it continues the function that called +the function calling lua_yield. + + + + + +

lua_yieldk

+[-?, +?, e] +

int lua_yieldk (lua_State *L,
+                int nresults,
+                lua_KContext ctx,
+                lua_KFunction k);
+ +

+Yields a coroutine (thread). + + +

+When a C function calls lua_yieldk, +the running coroutine suspends its execution, +and the call to lua_resume that started this coroutine returns. +The parameter nresults is the number of values from the stack +that will be passed as results to lua_resume. + + +

+When the coroutine is resumed again, +Lua calls the given continuation function k to continue +the execution of the C function that yielded (see §4.7). +This continuation function receives the same stack +from the previous function, +with the n results removed and +replaced by the arguments passed to lua_resume. +Moreover, +the continuation function receives the value ctx +that was passed to lua_yieldk. + + +

+Usually, this function does not return; +when the coroutine eventually resumes, +it continues executing the continuation function. +However, there is one special case, +which is when this function is called +from inside a line or a count hook (see §4.9). +In that case, lua_yieldk should be called with no continuation +(probably in the form of lua_yield) and no results, +and the hook should return immediately after the call. +Lua will yield and, +when the coroutine resumes again, +it will continue the normal execution +of the (Lua) function that triggered the hook. + + +

+This function can raise an error if it is called from a thread +with a pending C call with no continuation function, +or it is called from a thread that is not running inside a resume +(e.g., the main thread). + + + + + + + +

4.9 – The Debug Interface

+ +

+Lua has no built-in debugging facilities. +Instead, it offers a special interface +by means of functions and hooks. +This interface allows the construction of different +kinds of debuggers, profilers, and other tools +that need "inside information" from the interpreter. + + + +

lua_Debug

+
typedef struct lua_Debug {
+  int event;
+  const char *name;           /* (n) */
+  const char *namewhat;       /* (n) */
+  const char *what;           /* (S) */
+  const char *source;         /* (S) */
+  int currentline;            /* (l) */
+  int linedefined;            /* (S) */
+  int lastlinedefined;        /* (S) */
+  unsigned char nups;         /* (u) number of upvalues */
+  unsigned char nparams;      /* (u) number of parameters */
+  char isvararg;              /* (u) */
+  char istailcall;            /* (t) */
+  char short_src[LUA_IDSIZE]; /* (S) */
+  /* private part */
+  other fields
+} lua_Debug;
+ +

+A structure used to carry different pieces of +information about a function or an activation record. +lua_getstack fills only the private part +of this structure, for later use. +To fill the other fields of lua_Debug with useful information, +call lua_getinfo. + + +

+The fields of lua_Debug have the following meaning: + +

    + +
  • source: +the name of the chunk that created the function. +If source starts with a '@', +it means that the function was defined in a file where +the file name follows the '@'. +If source starts with a '=', +the remainder of its contents describe the source in a user-dependent manner. +Otherwise, +the function was defined in a string where +source is that string. +
    • + +
  • short_src: +a "printable" version of source, to be used in error messages. +
    • + +
  • linedefined: +the line number where the definition of the function starts. +
    • + +
  • lastlinedefined: +the line number where the definition of the function ends. +
    • + +
  • what: +the string "Lua" if the function is a Lua function, +"C" if it is a C function, +"main" if it is the main part of a chunk. +
    • + +
  • currentline: +the current line where the given function is executing. +When no line information is available, +currentline is set to -1. +
    • + +
  • name: +a reasonable name for the given function. +Because functions in Lua are first-class values, +they do not have a fixed name: +some functions can be the value of multiple global variables, +while others can be stored only in a table field. +The lua_getinfo function checks how the function was +called to find a suitable name. +If it cannot find a name, +then name is set to NULL. +
    • + +
  • namewhat: +explains the name field. +The value of namewhat can be +"global", "local", "method", +"field", "upvalue", or "" (the empty string), +according to how the function was called. +(Lua uses the empty string when no other option seems to apply.) +
    • + +
  • istailcall: +true if this function invocation was called by a tail call. +In this case, the caller of this level is not in the stack. +
    • + +
  • nups: +the number of upvalues of the function. +
    • + +
  • nparams: +the number of fixed parameters of the function +(always 0 for C functions). +
    • + +
  • isvararg: +true if the function is a vararg function +(always true for C functions). +
    • + +
+ + + + +

lua_gethook

+[-0, +0, –] +

lua_Hook lua_gethook (lua_State *L);
+ +

+Returns the current hook function. + + + + + +

lua_gethookcount

+[-0, +0, –] +

int lua_gethookcount (lua_State *L);
+ +

+Returns the current hook count. + + + + + +

lua_gethookmask

+[-0, +0, –] +

int lua_gethookmask (lua_State *L);
+ +

+Returns the current hook mask. + + + + + +

lua_getinfo

+[-(0|1), +(0|1|2), e] +

int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar);
+ +

+Gets information about a specific function or function invocation. + + +

+To get information about a function invocation, +the parameter ar must be a valid activation record that was +filled by a previous call to lua_getstack or +given as argument to a hook (see lua_Hook). + + +

+To get information about a function you push it onto the stack +and start the what string with the character '>'. +(In that case, +lua_getinfo pops the function from the top of the stack.) +For instance, to know in which line a function f was defined, +you can write the following code: + +

+     lua_Debug ar;
+     lua_getglobal(L, "f");  /* get global 'f' */
+     lua_getinfo(L, ">S", &ar);
+     printf("%d\n", ar.linedefined);
+
+ +

+Each character in the string what +selects some fields of the structure ar to be filled or +a value to be pushed on the stack: + +

    + +
  • 'n': fills in the field name and namewhat; +
    • + +
  • 'S': +fills in the fields source, short_src, +linedefined, lastlinedefined, and what; +
    • + +
  • 'l': fills in the field currentline; +
    • + +
  • 't': fills in the field istailcall; +
    • + +
  • 'u': fills in the fields +nups, nparams, and isvararg; +
    • + +
  • 'f': +pushes onto the stack the function that is +running at the given level; +
    • + +
  • 'L': +pushes onto the stack a table whose indices are the +numbers of the lines that are valid on the function. +(A valid line is a line with some associated code, +that is, a line where you can put a break point. +Non-valid lines include empty lines and comments.) + + +

    +If this option is given together with option 'f', +its table is pushed after the function. +

    • + +
+ +

+This function returns 0 on error +(for instance, an invalid option in what). + + + + + +

lua_getlocal

+[-0, +(0|1), –] +

const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n);
+ +

+Gets information about a local variable of +a given activation record or a given function. + + +

+In the first case, +the parameter ar must be a valid activation record that was +filled by a previous call to lua_getstack or +given as argument to a hook (see lua_Hook). +The index n selects which local variable to inspect; +see debug.getlocal for details about variable indices +and names. + + +

+lua_getlocal pushes the variable's value onto the stack +and returns its name. + + +

+In the second case, ar must be NULL and the function +to be inspected must be at the top of the stack. +In this case, only parameters of Lua functions are visible +(as there is no information about what variables are active) +and no values are pushed onto the stack. + + +

+Returns NULL (and pushes nothing) +when the index is greater than +the number of active local variables. + + + + + +

lua_getstack

+[-0, +0, –] +

int lua_getstack (lua_State *L, int level, lua_Debug *ar);
+ +

+Gets information about the interpreter runtime stack. + + +

+This function fills parts of a lua_Debug structure with +an identification of the activation record +of the function executing at a given level. +Level 0 is the current running function, +whereas level n+1 is the function that has called level n +(except for tail calls, which do not count on the stack). +When there are no errors, lua_getstack returns 1; +when called with a level greater than the stack depth, +it returns 0. + + + + + +

lua_getupvalue

+[-0, +(0|1), –] +

const char *lua_getupvalue (lua_State *L, int funcindex, int n);
+ +

+Gets information about the n-th upvalue +of the closure at index funcindex. +It pushes the upvalue's value onto the stack +and returns its name. +Returns NULL (and pushes nothing) +when the index n is greater than the number of upvalues. + + +

+For C functions, this function uses the empty string "" +as a name for all upvalues. +(For Lua functions, +upvalues are the external local variables that the function uses, +and that are consequently included in its closure.) + + +

+Upvalues have no particular order, +as they are active through the whole function. +They are numbered in an arbitrary order. + + + + + +

lua_Hook

+
typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar);
+ +

+Type for debugging hook functions. + + +

+Whenever a hook is called, its ar argument has its field +event set to the specific event that triggered the hook. +Lua identifies these events with the following constants: +LUA_HOOKCALL, LUA_HOOKRET, +LUA_HOOKTAILCALL, LUA_HOOKLINE, +and LUA_HOOKCOUNT. +Moreover, for line events, the field currentline is also set. +To get the value of any other field in ar, +the hook must call lua_getinfo. + + +

+For call events, event can be LUA_HOOKCALL, +the normal value, or LUA_HOOKTAILCALL, for a tail call; +in this case, there will be no corresponding return event. + + +

+While Lua is running a hook, it disables other calls to hooks. +Therefore, if a hook calls back Lua to execute a function or a chunk, +this execution occurs without any calls to hooks. + + +

+Hook functions cannot have continuations, +that is, they cannot call lua_yieldk, +lua_pcallk, or lua_callk with a non-null k. + + +

+Hook functions can yield under the following conditions: +Only count and line events can yield; +to yield, a hook function must finish its execution +calling lua_yield with nresults equal to zero +(that is, with no values). + + + + + +

lua_sethook

+[-0, +0, –] +

void lua_sethook (lua_State *L, lua_Hook f, int mask, int count);
+ +

+Sets the debugging hook function. + + +

+Argument f is the hook function. +mask specifies on which events the hook will be called: +it is formed by a bitwise OR of the constants +LUA_MASKCALL, +LUA_MASKRET, +LUA_MASKLINE, +and LUA_MASKCOUNT. +The count argument is only meaningful when the mask +includes LUA_MASKCOUNT. +For each event, the hook is called as explained below: + +

    + +
  • The call hook: is called when the interpreter calls a function. +The hook is called just after Lua enters the new function, +before the function gets its arguments. +
    • + +
  • The return hook: is called when the interpreter returns from a function. +The hook is called just before Lua leaves the function. +There is no standard way to access the values +to be returned by the function. +
    • + +
  • The line hook: is called when the interpreter is about to +start the execution of a new line of code, +or when it jumps back in the code (even to the same line). +(This event only happens while Lua is executing a Lua function.) +
    • + +
  • The count hook: is called after the interpreter executes every +count instructions. +(This event only happens while Lua is executing a Lua function.) +
    • + +
+ +

+A hook is disabled by setting mask to zero. + + + + + +

lua_setlocal

+[-(0|1), +0, –] +

const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n);
+ +

+Sets the value of a local variable of a given activation record. +It assigns the value at the top of the stack +to the variable and returns its name. +It also pops the value from the stack. + + +

+Returns NULL (and pops nothing) +when the index is greater than +the number of active local variables. + + +

+Parameters ar and n are as in function lua_getlocal. + + + + + +

lua_setupvalue

+[-(0|1), +0, –] +

const char *lua_setupvalue (lua_State *L, int funcindex, int n);
+ +

+Sets the value of a closure's upvalue. +It assigns the value at the top of the stack +to the upvalue and returns its name. +It also pops the value from the stack. + + +

+Returns NULL (and pops nothing) +when the index n is greater than the number of upvalues. + + +

+Parameters funcindex and n are as in function lua_getupvalue. + + + + + +

lua_upvalueid

+[-0, +0, –] +

void *lua_upvalueid (lua_State *L, int funcindex, int n);
+ +

+Returns a unique identifier for the upvalue numbered n +from the closure at index funcindex. + + +

+These unique identifiers allow a program to check whether different +closures share upvalues. +Lua closures that share an upvalue +(that is, that access a same external local variable) +will return identical ids for those upvalue indices. + + +

+Parameters funcindex and n are as in function lua_getupvalue, +but n cannot be greater than the number of upvalues. + + + + + +

lua_upvaluejoin

+[-0, +0, –] +

void lua_upvaluejoin (lua_State *L, int funcindex1, int n1,
+                                    int funcindex2, int n2);
+ +

+Make the n1-th upvalue of the Lua closure at index funcindex1 +refer to the n2-th upvalue of the Lua closure at index funcindex2. + + + + + + + +

5 – The Auxiliary Library

+ +

+ +The auxiliary library provides several convenient functions +to interface C with Lua. +While the basic API provides the primitive functions for all +interactions between C and Lua, +the auxiliary library provides higher-level functions for some +common tasks. + + +

+All functions and types from the auxiliary library +are defined in header file lauxlib.h and +have a prefix luaL_. + + +

+All functions in the auxiliary library are built on +top of the basic API, +and so they provide nothing that cannot be done with that API. +Nevertheless, the use of the auxiliary library ensures +more consistency to your code. + + +

+Several functions in the auxiliary library use internally some +extra stack slots. +When a function in the auxiliary library uses less than five slots, +it does not check the stack size; +it simply assumes that there are enough slots. + + +

+Several functions in the auxiliary library are used to +check C function arguments. +Because the error message is formatted for arguments +(e.g., "bad argument #1"), +you should not use these functions for other stack values. + + +

+Functions called luaL_check* +always raise an error if the check is not satisfied. + + + +

5.1 – Functions and Types

+ +

+Here we list all functions and types from the auxiliary library +in alphabetical order. + + + +

luaL_addchar

+[-?, +?, m] +

void luaL_addchar (luaL_Buffer *B, char c);
+ +

+Adds the byte c to the buffer B +(see luaL_Buffer). + + + + + +

luaL_addlstring

+[-?, +?, m] +

void luaL_addlstring (luaL_Buffer *B, const char *s, size_t l);
+ +

+Adds the string pointed to by s with length l to +the buffer B +(see luaL_Buffer). +The string can contain embedded zeros. + + + + + +

luaL_addsize

+[-?, +?, –] +

void luaL_addsize (luaL_Buffer *B, size_t n);
+ +

+Adds to the buffer B (see luaL_Buffer) +a string of length n previously copied to the +buffer area (see luaL_prepbuffer). + + + + + +

luaL_addstring

+[-?, +?, m] +

void luaL_addstring (luaL_Buffer *B, const char *s);
+ +

+Adds the zero-terminated string pointed to by s +to the buffer B +(see luaL_Buffer). + + + + + +

luaL_addvalue

+[-1, +?, m] +

void luaL_addvalue (luaL_Buffer *B);
+ +

+Adds the value at the top of the stack +to the buffer B +(see luaL_Buffer). +Pops the value. + + +

+This is the only function on string buffers that can (and must) +be called with an extra element on the stack, +which is the value to be added to the buffer. + + + + + +

luaL_argcheck

+[-0, +0, v] +

void luaL_argcheck (lua_State *L,
+                    int cond,
+                    int arg,
+                    const char *extramsg);
+ +

+Checks whether cond is true. +If it is not, raises an error with a standard message (see luaL_argerror). + + + + + +

luaL_argerror

+[-0, +0, v] +

int luaL_argerror (lua_State *L, int arg, const char *extramsg);
+ +

+Raises an error reporting a problem with argument arg +of the C function that called it, +using a standard message +that includes extramsg as a comment: + +

+     bad argument #arg to 'funcname' (extramsg)
+

+This function never returns. + + + + + +

luaL_Buffer

+
typedef struct luaL_Buffer luaL_Buffer;
+ +

+Type for a string buffer. + + +

+A string buffer allows C code to build Lua strings piecemeal. +Its pattern of use is as follows: + +

    + +
  • First declare a variable b of type luaL_Buffer.
    • + +
  • Then initialize it with a call luaL_buffinit(L, &b).
    • + +
  • +Then add string pieces to the buffer calling any of +the luaL_add* functions. +
    • + +
  • +Finish by calling luaL_pushresult(&b). +This call leaves the final string on the top of the stack. +
    • + +
+ +

+If you know beforehand the total size of the resulting string, +you can use the buffer like this: + +

    + +
  • First declare a variable b of type luaL_Buffer.
    • + +
  • Then initialize it and preallocate a space of +size sz with a call luaL_buffinitsize(L, &b, sz).
    • + +
  • Then copy the string into that space.
    • + +
  • +Finish by calling luaL_pushresultsize(&b, sz), +where sz is the total size of the resulting string +copied into that space. +
    • + +
+ +

+During its normal operation, +a string buffer uses a variable number of stack slots. +So, while using a buffer, you cannot assume that you know where +the top of the stack is. +You can use the stack between successive calls to buffer operations +as long as that use is balanced; +that is, +when you call a buffer operation, +the stack is at the same level +it was immediately after the previous buffer operation. +(The only exception to this rule is luaL_addvalue.) +After calling luaL_pushresult the stack is back to its +level when the buffer was initialized, +plus the final string on its top. + + + + + +

luaL_buffinit

+[-0, +0, –] +

void luaL_buffinit (lua_State *L, luaL_Buffer *B);
+ +

+Initializes a buffer B. +This function does not allocate any space; +the buffer must be declared as a variable +(see luaL_Buffer). + + + + + +

luaL_buffinitsize

+[-?, +?, m] +

char *luaL_buffinitsize (lua_State *L, luaL_Buffer *B, size_t sz);
+ +

+Equivalent to the sequence +luaL_buffinit, luaL_prepbuffsize. + + + + + +

luaL_callmeta

+[-0, +(0|1), e] +

int luaL_callmeta (lua_State *L, int obj, const char *e);
+ +

+Calls a metamethod. + + +

+If the object at index obj has a metatable and this +metatable has a field e, +this function calls this field passing the object as its only argument. +In this case this function returns true and pushes onto the +stack the value returned by the call. +If there is no metatable or no metamethod, +this function returns false (without pushing any value on the stack). + + + + + +

luaL_checkany

+[-0, +0, v] +

void luaL_checkany (lua_State *L, int arg);
+ +

+Checks whether the function has an argument +of any type (including nil) at position arg. + + + + + +

luaL_checkinteger

+[-0, +0, v] +

lua_Integer luaL_checkinteger (lua_State *L, int arg);
+ +

+Checks whether the function argument arg is an integer +(or can be converted to an integer) +and returns this integer cast to a lua_Integer. + + + + + +

luaL_checklstring

+[-0, +0, v] +

const char *luaL_checklstring (lua_State *L, int arg, size_t *l);
+ +

+Checks whether the function argument arg is a string +and returns this string; +if l is not NULL fills *l +with the string's length. + + +

+This function uses lua_tolstring to get its result, +so all conversions and caveats of that function apply here. + + + + + +

luaL_checknumber

+[-0, +0, v] +

lua_Number luaL_checknumber (lua_State *L, int arg);
+ +

+Checks whether the function argument arg is a number +and returns this number. + + + + + +

luaL_checkoption

+[-0, +0, v] +

int luaL_checkoption (lua_State *L,
+                      int arg,
+                      const char *def,
+                      const char *const lst[]);
+ +

+Checks whether the function argument arg is a string and +searches for this string in the array lst +(which must be NULL-terminated). +Returns the index in the array where the string was found. +Raises an error if the argument is not a string or +if the string cannot be found. + + +

+If def is not NULL, +the function uses def as a default value when +there is no argument arg or when this argument is nil. + + +

+This is a useful function for mapping strings to C enums. +(The usual convention in Lua libraries is +to use strings instead of numbers to select options.) + + + + + +

luaL_checkstack

+[-0, +0, v] +

void luaL_checkstack (lua_State *L, int sz, const char *msg);
+ +

+Grows the stack size to top + sz elements, +raising an error if the stack cannot grow to that size. +msg is an additional text to go into the error message +(or NULL for no additional text). + + + + + +

luaL_checkstring

+[-0, +0, v] +

const char *luaL_checkstring (lua_State *L, int arg);
+ +

+Checks whether the function argument arg is a string +and returns this string. + + +

+This function uses lua_tolstring to get its result, +so all conversions and caveats of that function apply here. + + + + + +

luaL_checktype

+[-0, +0, v] +

void luaL_checktype (lua_State *L, int arg, int t);
+ +

+Checks whether the function argument arg has type t. +See lua_type for the encoding of types for t. + + + + + +

luaL_checkudata

+[-0, +0, v] +

void *luaL_checkudata (lua_State *L, int arg, const char *tname);
+ +

+Checks whether the function argument arg is a userdata +of the type tname (see luaL_newmetatable) and +returns the userdata address (see lua_touserdata). + + + + + +

luaL_checkversion

+[-0, +0, v] +

void luaL_checkversion (lua_State *L);
+ +

+Checks whether the core running the call, +the core that created the Lua state, +and the code making the call are all using the same version of Lua. +Also checks whether the core running the call +and the core that created the Lua state +are using the same address space. + + + + + +

luaL_dofile

+[-0, +?, e] +

int luaL_dofile (lua_State *L, const char *filename);
+ +

+Loads and runs the given file. +It is defined as the following macro: + +

+     (luaL_loadfile(L, filename) || lua_pcall(L, 0, LUA_MULTRET, 0))
+

+It returns false if there are no errors +or true in case of errors. + + + + + +

luaL_dostring

+[-0, +?, –] +

int luaL_dostring (lua_State *L, const char *str);
+ +

+Loads and runs the given string. +It is defined as the following macro: + +

+     (luaL_loadstring(L, str) || lua_pcall(L, 0, LUA_MULTRET, 0))
+

+It returns false if there are no errors +or true in case of errors. + + + + + +

luaL_error

+[-0, +0, v] +

int luaL_error (lua_State *L, const char *fmt, ...);
+ +

+Raises an error. +The error message format is given by fmt +plus any extra arguments, +following the same rules of lua_pushfstring. +It also adds at the beginning of the message the file name and +the line number where the error occurred, +if this information is available. + + +

+This function never returns, +but it is an idiom to use it in C functions +as return luaL_error(args). + + + + + +

luaL_execresult

+[-0, +3, m] +

int luaL_execresult (lua_State *L, int stat);
+ +

+This function produces the return values for +process-related functions in the standard library +(os.execute and io.close). + + + + + +

luaL_fileresult

+[-0, +(1|3), m] +

int luaL_fileresult (lua_State *L, int stat, const char *fname);
+ +

+This function produces the return values for +file-related functions in the standard library +(io.open, os.rename, file:seek, etc.). + + + + + +

luaL_getmetafield

+[-0, +(0|1), m] +

int luaL_getmetafield (lua_State *L, int obj, const char *e);
+ +

+Pushes onto the stack the field e from the metatable +of the object at index obj and returns the type of pushed value. +If the object does not have a metatable, +or if the metatable does not have this field, +pushes nothing and returns LUA_TNIL. + + + + + +

luaL_getmetatable

+[-0, +1, m] +

int luaL_getmetatable (lua_State *L, const char *tname);
+ +

+Pushes onto the stack the metatable associated with name tname +in the registry (see luaL_newmetatable) +(nil if there is no metatable associated with that name). +Returns the type of the pushed value. + + + + + +

luaL_getsubtable

+[-0, +1, e] +

int luaL_getsubtable (lua_State *L, int idx, const char *fname);
+ +

+Ensures that the value t[fname], +where t is the value at index idx, +is a table, +and pushes that table onto the stack. +Returns true if it finds a previous table there +and false if it creates a new table. + + + + + +

luaL_gsub

+[-0, +1, m] +

const char *luaL_gsub (lua_State *L,
+                       const char *s,
+                       const char *p,
+                       const char *r);
+ +

+Creates a copy of string s by replacing +any occurrence of the string p +with the string r. +Pushes the resulting string on the stack and returns it. + + + + + +

luaL_len

+[-0, +0, e] +

lua_Integer luaL_len (lua_State *L, int index);
+ +

+Returns the "length" of the value at the given index +as a number; +it is equivalent to the '#' operator in Lua (see §3.4.7). +Raises an error if the result of the operation is not an integer. +(This case only can happen through metamethods.) + + + + + +

luaL_loadbuffer

+[-0, +1, –] +

int luaL_loadbuffer (lua_State *L,
+                     const char *buff,
+                     size_t sz,
+                     const char *name);
+ +

+Equivalent to luaL_loadbufferx with mode equal to NULL. + + + + + +

luaL_loadbufferx

+[-0, +1, –] +

int luaL_loadbufferx (lua_State *L,
+                      const char *buff,
+                      size_t sz,
+                      const char *name,
+                      const char *mode);
+ +

+Loads a buffer as a Lua chunk. +This function uses lua_load to load the chunk in the +buffer pointed to by buff with size sz. + + +

+This function returns the same results as lua_load. +name is the chunk name, +used for debug information and error messages. +The string mode works as in function lua_load. + + + + + +

luaL_loadfile

+[-0, +1, m] +

int luaL_loadfile (lua_State *L, const char *filename);
+ +

+Equivalent to luaL_loadfilex with mode equal to NULL. + + + + + +

luaL_loadfilex

+[-0, +1, m] +

int luaL_loadfilex (lua_State *L, const char *filename,
+                                            const char *mode);
+ +

+Loads a file as a Lua chunk. +This function uses lua_load to load the chunk in the file +named filename. +If filename is NULL, +then it loads from the standard input. +The first line in the file is ignored if it starts with a #. + + +

+The string mode works as in function lua_load. + + +

+This function returns the same results as lua_load, +but it has an extra error code LUA_ERRFILE +for file-related errors +(e.g., it cannot open or read the file). + + +

+As lua_load, this function only loads the chunk; +it does not run it. + + + + + +

luaL_loadstring

+[-0, +1, –] +

int luaL_loadstring (lua_State *L, const char *s);
+ +

+Loads a string as a Lua chunk. +This function uses lua_load to load the chunk in +the zero-terminated string s. + + +

+This function returns the same results as lua_load. + + +

+Also as lua_load, this function only loads the chunk; +it does not run it. + + + + + +

luaL_newlib

+[-0, +1, m] +

void luaL_newlib (lua_State *L, const luaL_Reg l[]);
+ +

+Creates a new table and registers there +the functions in list l. + + +

+It is implemented as the following macro: + +

+     (luaL_newlibtable(L,l), luaL_setfuncs(L,l,0))
+

+The array l must be the actual array, +not a pointer to it. + + + + + +

luaL_newlibtable

+[-0, +1, m] +

void luaL_newlibtable (lua_State *L, const luaL_Reg l[]);
+ +

+Creates a new table with a size optimized +to store all entries in the array l +(but does not actually store them). +It is intended to be used in conjunction with luaL_setfuncs +(see luaL_newlib). + + +

+It is implemented as a macro. +The array l must be the actual array, +not a pointer to it. + + + + + +

luaL_newmetatable

+[-0, +1, m] +

int luaL_newmetatable (lua_State *L, const char *tname);
+ +

+If the registry already has the key tname, +returns 0. +Otherwise, +creates a new table to be used as a metatable for userdata, +adds to this new table the pair __name = tname, +adds to the registry the pair [tname] = new table, +and returns 1. +(The entry __name is used by some error-reporting functions.) + + +

+In both cases pushes onto the stack the final value associated +with tname in the registry. + + + + + +

luaL_newstate

+[-0, +0, –] +

lua_State *luaL_newstate (void);
+ +

+Creates a new Lua state. +It calls lua_newstate with an +allocator based on the standard C realloc function +and then sets a panic function (see §4.6) that prints +an error message to the standard error output in case of fatal +errors. + + +

+Returns the new state, +or NULL if there is a memory allocation error. + + + + + +

luaL_openlibs

+[-0, +0, e] +

void luaL_openlibs (lua_State *L);
+ +

+Opens all standard Lua libraries into the given state. + + + + + +

luaL_opt

+[-0, +0, e] +

T luaL_opt (L, func, arg, dflt);
+ +

+This macro is defined as follows: + +

+     (lua_isnoneornil(L,(arg)) ? (dflt) : func(L,(arg)))
+

+In words, if the argument arg is nil or absent, +the macro results in the default dflt. +Otherwise, it results in the result of calling func +with the state L and the argument index arg as +parameters. +Note that it evaluates the expression dflt only if needed. + + + + + +

luaL_optinteger

+[-0, +0, v] +

lua_Integer luaL_optinteger (lua_State *L,
+                             int arg,
+                             lua_Integer d);
+ +

+If the function argument arg is an integer +(or convertible to an integer), +returns this integer. +If this argument is absent or is nil, +returns d. +Otherwise, raises an error. + + + + + +

luaL_optlstring

+[-0, +0, v] +

const char *luaL_optlstring (lua_State *L,
+                             int arg,
+                             const char *d,
+                             size_t *l);
+ +

+If the function argument arg is a string, +returns this string. +If this argument is absent or is nil, +returns d. +Otherwise, raises an error. + + +

+If l is not NULL, +fills the position *l with the result's length. +If the result is NULL +(only possible when returning d and d == NULL), +its length is considered zero. + + +

+This function uses lua_tolstring to get its result, +so all conversions and caveats of that function apply here. + + + + + +

luaL_optnumber

+[-0, +0, v] +

lua_Number luaL_optnumber (lua_State *L, int arg, lua_Number d);
+ +

+If the function argument arg is a number, +returns this number. +If this argument is absent or is nil, +returns d. +Otherwise, raises an error. + + + + + +

luaL_optstring

+[-0, +0, v] +

const char *luaL_optstring (lua_State *L,
+                            int arg,
+                            const char *d);
+ +

+If the function argument arg is a string, +returns this string. +If this argument is absent or is nil, +returns d. +Otherwise, raises an error. + + + + + +

luaL_prepbuffer

+[-?, +?, m] +

char *luaL_prepbuffer (luaL_Buffer *B);
+ +

+Equivalent to luaL_prepbuffsize +with the predefined size LUAL_BUFFERSIZE. + + + + + +

luaL_prepbuffsize

+[-?, +?, m] +

char *luaL_prepbuffsize (luaL_Buffer *B, size_t sz);
+ +

+Returns an address to a space of size sz +where you can copy a string to be added to buffer B +(see luaL_Buffer). +After copying the string into this space you must call +luaL_addsize with the size of the string to actually add +it to the buffer. + + + + + +

luaL_pushresult

+[-?, +1, m] +

void luaL_pushresult (luaL_Buffer *B);
+ +

+Finishes the use of buffer B leaving the final string on +the top of the stack. + + + + + +

luaL_pushresultsize

+[-?, +1, m] +

void luaL_pushresultsize (luaL_Buffer *B, size_t sz);
+ +

+Equivalent to the sequence luaL_addsize, luaL_pushresult. + + + + + +

luaL_ref

+[-1, +0, m] +

int luaL_ref (lua_State *L, int t);
+ +

+Creates and returns a reference, +in the table at index t, +for the object at the top of the stack (and pops the object). + + +

+A reference is a unique integer key. +As long as you do not manually add integer keys into table t, +luaL_ref ensures the uniqueness of the key it returns. +You can retrieve an object referred by reference r +by calling lua_rawgeti(L, t, r). +Function luaL_unref frees a reference and its associated object. + + +

+If the object at the top of the stack is nil, +luaL_ref returns the constant LUA_REFNIL. +The constant LUA_NOREF is guaranteed to be different +from any reference returned by luaL_ref. + + + + + +

luaL_Reg

+
typedef struct luaL_Reg {
+  const char *name;
+  lua_CFunction func;
+} luaL_Reg;
+ +

+Type for arrays of functions to be registered by +luaL_setfuncs. +name is the function name and func is a pointer to +the function. +Any array of luaL_Reg must end with a sentinel entry +in which both name and func are NULL. + + + + + +

luaL_requiref

+[-0, +1, e] +

void luaL_requiref (lua_State *L, const char *modname,
+                    lua_CFunction openf, int glb);
+ +

+If modname is not already present in package.loaded, +calls function openf with string modname as an argument +and sets the call result in package.loaded[modname], +as if that function has been called through require. + + +

+If glb is true, +also stores the module into global modname. + + +

+Leaves a copy of the module on the stack. + + + + + +

luaL_setfuncs

+[-nup, +0, m] +

void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup);
+ +

+Registers all functions in the array l +(see luaL_Reg) into the table on the top of the stack +(below optional upvalues, see next). + + +

+When nup is not zero, +all functions are created sharing nup upvalues, +which must be previously pushed on the stack +on top of the library table. +These values are popped from the stack after the registration. + + + + + +

luaL_setmetatable

+[-0, +0, –] +

void luaL_setmetatable (lua_State *L, const char *tname);
+ +

+Sets the metatable of the object at the top of the stack +as the metatable associated with name tname +in the registry (see luaL_newmetatable). + + + + + +

luaL_Stream

+
typedef struct luaL_Stream {
+  FILE *f;
+  lua_CFunction closef;
+} luaL_Stream;
+ +

+The standard representation for file handles, +which is used by the standard I/O library. + + +

+A file handle is implemented as a full userdata, +with a metatable called LUA_FILEHANDLE +(where LUA_FILEHANDLE is a macro with the actual metatable's name). +The metatable is created by the I/O library +(see luaL_newmetatable). + + +

+This userdata must start with the structure luaL_Stream; +it can contain other data after this initial structure. +Field f points to the corresponding C stream +(or it can be NULL to indicate an incompletely created handle). +Field closef points to a Lua function +that will be called to close the stream +when the handle is closed or collected; +this function receives the file handle as its sole argument and +must return either true (in case of success) +or nil plus an error message (in case of error). +Once Lua calls this field, +it changes the field value to NULL +to signal that the handle is closed. + + + + + +

luaL_testudata

+[-0, +0, m] +

void *luaL_testudata (lua_State *L, int arg, const char *tname);
+ +

+This function works like luaL_checkudata, +except that, when the test fails, +it returns NULL instead of raising an error. + + + + + +

luaL_tolstring

+[-0, +1, e] +

const char *luaL_tolstring (lua_State *L, int idx, size_t *len);
+ +

+Converts any Lua value at the given index to a C string +in a reasonable format. +The resulting string is pushed onto the stack and also +returned by the function. +If len is not NULL, +the function also sets *len with the string length. + + +

+If the value has a metatable with a __tostring field, +then luaL_tolstring calls the corresponding metamethod +with the value as argument, +and uses the result of the call as its result. + + + + + +

luaL_traceback

+[-0, +1, m] +

void luaL_traceback (lua_State *L, lua_State *L1, const char *msg,
+                     int level);
+ +

+Creates and pushes a traceback of the stack L1. +If msg is not NULL it is appended +at the beginning of the traceback. +The level parameter tells at which level +to start the traceback. + + + + + +

luaL_typename

+[-0, +0, –] +

const char *luaL_typename (lua_State *L, int index);
+ +

+Returns the name of the type of the value at the given index. + + + + + +

luaL_unref

+[-0, +0, –] +

void luaL_unref (lua_State *L, int t, int ref);
+ +

+Releases reference ref from the table at index t +(see luaL_ref). +The entry is removed from the table, +so that the referred object can be collected. +The reference ref is also freed to be used again. + + +

+If ref is LUA_NOREF or LUA_REFNIL, +luaL_unref does nothing. + + + + + +

luaL_where

+[-0, +1, m] +

void luaL_where (lua_State *L, int lvl);
+ +

+Pushes onto the stack a string identifying the current position +of the control at level lvl in the call stack. +Typically this string has the following format: + +

+     chunkname:currentline:
+

+Level 0 is the running function, +level 1 is the function that called the running function, +etc. + + +

+This function is used to build a prefix for error messages. + + + + + + + +

6 – Standard Libraries

+ +

+The standard Lua libraries provide useful functions +that are implemented directly through the C API. +Some of these functions provide essential services to the language +(e.g., type and getmetatable); +others provide access to "outside" services (e.g., I/O); +and others could be implemented in Lua itself, +but are quite useful or have critical performance requirements that +deserve an implementation in C (e.g., table.sort). + + +

+All libraries are implemented through the official C API +and are provided as separate C modules. +Currently, Lua has the following standard libraries: + +

    + +
  • basic library (§6.1);
    • + +
  • coroutine library (§6.2);
    • + +
  • package library (§6.3);
    • + +
  • string manipulation (§6.4);
    • + +
  • basic UTF-8 support (§6.5);
    • + +
  • table manipulation (§6.6);
    • + +
  • mathematical functions (§6.7) (sin, log, etc.);
    • + +
  • input and output (§6.8);
    • + +
  • operating system facilities (§6.9);
    • + +
  • debug facilities (§6.10).
    • + +

+Except for the basic and the package libraries, +each library provides all its functions as fields of a global table +or as methods of its objects. + + +

+To have access to these libraries, +the C host program should call the luaL_openlibs function, +which opens all standard libraries. +Alternatively, +the host program can open them individually by using +luaL_requiref to call +luaopen_base (for the basic library), +luaopen_package (for the package library), +luaopen_coroutine (for the coroutine library), +luaopen_string (for the string library), +luaopen_utf8 (for the UTF8 library), +luaopen_table (for the table library), +luaopen_math (for the mathematical library), +luaopen_io (for the I/O library), +luaopen_os (for the operating system library), +and luaopen_debug (for the debug library). +These functions are declared in lualib.h. + + + +

6.1 – Basic Functions

+ +

+The basic library provides core functions to Lua. +If you do not include this library in your application, +you should check carefully whether you need to provide +implementations for some of its facilities. + + +

+

assert (v [, message])

+ + +

+Calls error if +the value of its argument v is false (i.e., nil or false); +otherwise, returns all its arguments. +In case of error, +message is the error object; +when absent, it defaults to "assertion failed!" + + + + +

+

collectgarbage ([opt [, arg]])

+ + +

+This function is a generic interface to the garbage collector. +It performs different functions according to its first argument, opt: + +

    + +
  • "collect": +performs a full garbage-collection cycle. +This is the default option. +
    • + +
  • "stop": +stops automatic execution of the garbage collector. +The collector will run only when explicitly invoked, +until a call to restart it. +
    • + +
  • "restart": +restarts automatic execution of the garbage collector. +
    • + +
  • "count": +returns the total memory in use by Lua in Kbytes. +The value has a fractional part, +so that it multiplied by 1024 +gives the exact number of bytes in use by Lua +(except for overflows). +
    • + +
  • "step": +performs a garbage-collection step. +The step "size" is controlled by arg. +With a zero value, +the collector will perform one basic (indivisible) step. +For non-zero values, +the collector will perform as if that amount of memory +(in KBytes) had been allocated by Lua. +Returns true if the step finished a collection cycle. +
    • + +
  • "setpause": +sets arg as the new value for the pause of +the collector (see §2.5). +Returns the previous value for pause. +
    • + +
  • "setstepmul": +sets arg as the new value for the step multiplier of +the collector (see §2.5). +Returns the previous value for step. +
    • + +
  • "isrunning": +returns a boolean that tells whether the collector is running +(i.e., not stopped). +
    • + +
+ + + +

+

dofile ([filename])

+Opens the named file and executes its contents as a Lua chunk. +When called without arguments, +dofile executes the contents of the standard input (stdin). +Returns all values returned by the chunk. +In case of errors, dofile propagates the error +to its caller (that is, dofile does not run in protected mode). + + + + +

+

error (message [, level])

+Terminates the last protected function called +and returns message as the error object. +Function error never returns. + + +

+Usually, error adds some information about the error position +at the beginning of the message, if the message is a string. +The level argument specifies how to get the error position. +With level 1 (the default), the error position is where the +error function was called. +Level 2 points the error to where the function +that called error was called; and so on. +Passing a level 0 avoids the addition of error position information +to the message. + + + + +

+

_G

+A global variable (not a function) that +holds the global environment (see §2.2). +Lua itself does not use this variable; +changing its value does not affect any environment, +nor vice versa. + + + + +

+

getmetatable (object)

+ + +

+If object does not have a metatable, returns nil. +Otherwise, +if the object's metatable has a __metatable field, +returns the associated value. +Otherwise, returns the metatable of the given object. + + + + +

+

ipairs (t)

+ + +

+Returns three values (an iterator function, the table t, and 0) +so that the construction + +

+     for i,v in ipairs(t) do body end
+

+will iterate over the key–value pairs +(1,t[1]), (2,t[2]), ..., +up to the first nil value. + + + + +

+

load (chunk [, chunkname [, mode [, env]]])

+ + +

+Loads a chunk. + + +

+If chunk is a string, the chunk is this string. +If chunk is a function, +load calls it repeatedly to get the chunk pieces. +Each call to chunk must return a string that concatenates +with previous results. +A return of an empty string, nil, or no value signals the end of the chunk. + + +

+If there are no syntactic errors, +returns the compiled chunk as a function; +otherwise, returns nil plus the error message. + + +

+If the resulting function has upvalues, +the first upvalue is set to the value of env, +if that parameter is given, +or to the value of the global environment. +Other upvalues are initialized with nil. +(When you load a main chunk, +the resulting function will always have exactly one upvalue, +the _ENV variable (see §2.2). +However, +when you load a binary chunk created from a function (see string.dump), +the resulting function can have an arbitrary number of upvalues.) +All upvalues are fresh, that is, +they are not shared with any other function. + + +

+chunkname is used as the name of the chunk for error messages +and debug information (see §4.9). +When absent, +it defaults to chunk, if chunk is a string, +or to "=(load)" otherwise. + + +

+The string mode controls whether the chunk can be text or binary +(that is, a precompiled chunk). +It may be the string "b" (only binary chunks), +"t" (only text chunks), +or "bt" (both binary and text). +The default is "bt". + + +

+Lua does not check the consistency of binary chunks. +Maliciously crafted binary chunks can crash +the interpreter. + + + + +

+

loadfile ([filename [, mode [, env]]])

+ + +

+Similar to load, +but gets the chunk from file filename +or from the standard input, +if no file name is given. + + + + +

+

next (table [, index])

+ + +

+Allows a program to traverse all fields of a table. +Its first argument is a table and its second argument +is an index in this table. +next returns the next index of the table +and its associated value. +When called with nil as its second argument, +next returns an initial index +and its associated value. +When called with the last index, +or with nil in an empty table, +next returns nil. +If the second argument is absent, then it is interpreted as nil. +In particular, +you can use next(t) to check whether a table is empty. + + +

+The order in which the indices are enumerated is not specified, +even for numeric indices. +(To traverse a table in numerical order, +use a numerical for.) + + +

+The behavior of next is undefined if, +during the traversal, +you assign any value to a non-existent field in the table. +You may however modify existing fields. +In particular, you may clear existing fields. + + + + +

+

pairs (t)

+ + +

+If t has a metamethod __pairs, +calls it with t as argument and returns the first three +results from the call. + + +

+Otherwise, +returns three values: the next function, the table t, and nil, +so that the construction + +

+     for k,v in pairs(t) do body end
+

+will iterate over all key–value pairs of table t. + + +

+See function next for the caveats of modifying +the table during its traversal. + + + + +

+

pcall (f [, arg1, ···])

+ + +

+Calls function f with +the given arguments in protected mode. +This means that any error inside f is not propagated; +instead, pcall catches the error +and returns a status code. +Its first result is the status code (a boolean), +which is true if the call succeeds without errors. +In such case, pcall also returns all results from the call, +after this first result. +In case of any error, pcall returns false plus the error message. + + + + +

+

print (···)

+Receives any number of arguments +and prints their values to stdout, +using the tostring function to convert each argument to a string. +print is not intended for formatted output, +but only as a quick way to show a value, +for instance for debugging. +For complete control over the output, +use string.format and io.write. + + + + +

+

rawequal (v1, v2)

+Checks whether v1 is equal to v2, +without invoking the __eq metamethod. +Returns a boolean. + + + + +

+

rawget (table, index)

+Gets the real value of table[index], +without invoking the __index metamethod. +table must be a table; +index may be any value. + + + + +

+

rawlen (v)

+Returns the length of the object v, +which must be a table or a string, +without invoking the __len metamethod. +Returns an integer. + + + + +

+

rawset (table, index, value)

+Sets the real value of table[index] to value, +without invoking the __newindex metamethod. +table must be a table, +index any value different from nil and NaN, +and value any Lua value. + + +

+This function returns table. + + + + +

+

select (index, ···)

+ + +

+If index is a number, +returns all arguments after argument number index; +a negative number indexes from the end (-1 is the last argument). +Otherwise, index must be the string "#", +and select returns the total number of extra arguments it received. + + + + +

+

setmetatable (table, metatable)

+ + +

+Sets the metatable for the given table. +(To change the metatable of other types from Lua code, +you must use the debug library (§6.10).) +If metatable is nil, +removes the metatable of the given table. +If the original metatable has a __metatable field, +raises an error. + + +

+This function returns table. + + + + +

+

tonumber (e [, base])

+ + +

+When called with no base, +tonumber tries to convert its argument to a number. +If the argument is already a number or +a string convertible to a number, +then tonumber returns this number; +otherwise, it returns nil. + + +

+The conversion of strings can result in integers or floats, +according to the lexical conventions of Lua (see §3.1). +(The string may have leading and trailing spaces and a sign.) + + +

+When called with base, +then e must be a string to be interpreted as +an integer numeral in that base. +The base may be any integer between 2 and 36, inclusive. +In bases above 10, the letter 'A' (in either upper or lower case) +represents 10, 'B' represents 11, and so forth, +with 'Z' representing 35. +If the string e is not a valid numeral in the given base, +the function returns nil. + + + + +

+

tostring (v)

+Receives a value of any type and +converts it to a string in a human-readable format. +(For complete control of how numbers are converted, +use string.format.) + + +

+If the metatable of v has a __tostring field, +then tostring calls the corresponding value +with v as argument, +and uses the result of the call as its result. + + + + +

+

type (v)

+Returns the type of its only argument, coded as a string. +The possible results of this function are +"nil" (a string, not the value nil), +"number", +"string", +"boolean", +"table", +"function", +"thread", +and "userdata". + + + + +

+

_VERSION

+ + +

+A global variable (not a function) that +holds a string containing the running Lua version. +The current value of this variable is "Lua 5.3". + + + + +

+

xpcall (f, msgh [, arg1, ···])

+ + +

+This function is similar to pcall, +except that it sets a new message handler msgh. + + + + + + + +

6.2 – Coroutine Manipulation

+ +

+This library comprises the operations to manipulate coroutines, +which come inside the table coroutine. +See §2.6 for a general description of coroutines. + + +

+

coroutine.create (f)

+ + +

+Creates a new coroutine, with body f. +f must be a function. +Returns this new coroutine, +an object with type "thread". + + + + +

+

coroutine.isyieldable ()

+ + +

+Returns true when the running coroutine can yield. + + +

+A running coroutine is yieldable if it is not the main thread and +it is not inside a non-yieldable C function. + + + + +

+

coroutine.resume (co [, val1, ···])

+ + +

+Starts or continues the execution of coroutine co. +The first time you resume a coroutine, +it starts running its body. +The values val1, ... are passed +as the arguments to the body function. +If the coroutine has yielded, +resume restarts it; +the values val1, ... are passed +as the results from the yield. + + +

+If the coroutine runs without any errors, +resume returns true plus any values passed to yield +(when the coroutine yields) or any values returned by the body function +(when the coroutine terminates). +If there is any error, +resume returns false plus the error message. + + + + +

+

coroutine.running ()

+ + +

+Returns the running coroutine plus a boolean, +true when the running coroutine is the main one. + + + + +

+

coroutine.status (co)

+ + +

+Returns the status of coroutine co, as a string: +"running", +if the coroutine is running (that is, it called status); +"suspended", if the coroutine is suspended in a call to yield, +or if it has not started running yet; +"normal" if the coroutine is active but not running +(that is, it has resumed another coroutine); +and "dead" if the coroutine has finished its body function, +or if it has stopped with an error. + + + + +

+

coroutine.wrap (f)

+ + +

+Creates a new coroutine, with body f. +f must be a function. +Returns a function that resumes the coroutine each time it is called. +Any arguments passed to the function behave as the +extra arguments to resume. +Returns the same values returned by resume, +except the first boolean. +In case of error, propagates the error. + + + + +

+

coroutine.yield (···)

+ + +

+Suspends the execution of the calling coroutine. +Any arguments to yield are passed as extra results to resume. + + + + + + + +

6.3 – Modules

+ +

+The package library provides basic +facilities for loading modules in Lua. +It exports one function directly in the global environment: +require. +Everything else is exported in a table package. + + +

+

require (modname)

+ + +

+Loads the given module. +The function starts by looking into the package.loaded table +to determine whether modname is already loaded. +If it is, then require returns the value stored +at package.loaded[modname]. +Otherwise, it tries to find a loader for the module. + + +

+To find a loader, +require is guided by the package.searchers sequence. +By changing this sequence, +we can change how require looks for a module. +The following explanation is based on the default configuration +for package.searchers. + + +

+First require queries package.preload[modname]. +If it has a value, +this value (which must be a function) is the loader. +Otherwise require searches for a Lua loader using the +path stored in package.path. +If that also fails, it searches for a C loader using the +path stored in package.cpath. +If that also fails, +it tries an all-in-one loader (see package.searchers). + + +

+Once a loader is found, +require calls the loader with two arguments: +modname and an extra value dependent on how it got the loader. +(If the loader came from a file, +this extra value is the file name.) +If the loader returns any non-nil value, +require assigns the returned value to package.loaded[modname]. +If the loader does not return a non-nil value and +has not assigned any value to package.loaded[modname], +then require assigns true to this entry. +In any case, require returns the +final value of package.loaded[modname]. + + +

+If there is any error loading or running the module, +or if it cannot find any loader for the module, +then require raises an error. + + + + +

+

package.config

+ + +

+A string describing some compile-time configurations for packages. +This string is a sequence of lines: + +

    + +
  • The first line is the directory separator string. +Default is '\' for Windows and '/' for all other systems.
    • + +
  • The second line is the character that separates templates in a path. +Default is ';'.
    • + +
  • The third line is the string that marks the +substitution points in a template. +Default is '?'.
    • + +
  • The fourth line is a string that, in a path in Windows, +is replaced by the executable's directory. +Default is '!'.
    • + +
  • The fifth line is a mark to ignore all text after it +when building the luaopen_ function name. +Default is '-'.
    • + +
+ + + +

+

package.cpath

+ + +

+The path used by require to search for a C loader. + + +

+Lua initializes the C path package.cpath in the same way +it initializes the Lua path package.path, +using the environment variable LUA_CPATH_5_3, +or the environment variable LUA_CPATH, +or a default path defined in luaconf.h. + + + + +

+

package.loaded

+ + +

+A table used by require to control which +modules are already loaded. +When you require a module modname and +package.loaded[modname] is not false, +require simply returns the value stored there. + + +

+This variable is only a reference to the real table; +assignments to this variable do not change the +table used by require. + + + + +

+

package.loadlib (libname, funcname)

+ + +

+Dynamically links the host program with the C library libname. + + +

+If funcname is "*", +then it only links with the library, +making the symbols exported by the library +available to other dynamically linked libraries. +Otherwise, +it looks for a function funcname inside the library +and returns this function as a C function. +So, funcname must follow the lua_CFunction prototype +(see lua_CFunction). + + +

+This is a low-level function. +It completely bypasses the package and module system. +Unlike require, +it does not perform any path searching and +does not automatically adds extensions. +libname must be the complete file name of the C library, +including if necessary a path and an extension. +funcname must be the exact name exported by the C library +(which may depend on the C compiler and linker used). + + +

+This function is not supported by Standard C. +As such, it is only available on some platforms +(Windows, Linux, Mac OS X, Solaris, BSD, +plus other Unix systems that support the dlfcn standard). + + + + +

+

package.path

+ + +

+The path used by require to search for a Lua loader. + + +

+At start-up, Lua initializes this variable with +the value of the environment variable LUA_PATH_5_3 or +the environment variable LUA_PATH or +with a default path defined in luaconf.h, +if those environment variables are not defined. +Any ";;" in the value of the environment variable +is replaced by the default path. + + + + +

+

package.preload

+ + +

+A table to store loaders for specific modules +(see require). + + +

+This variable is only a reference to the real table; +assignments to this variable do not change the +table used by require. + + + + +

+

package.searchers

+ + +

+A table used by require to control how to load modules. + + +

+Each entry in this table is a searcher function. +When looking for a module, +require calls each of these searchers in ascending order, +with the module name (the argument given to require) as its +sole parameter. +The function can return another function (the module loader) +plus an extra value that will be passed to that loader, +or a string explaining why it did not find that module +(or nil if it has nothing to say). + + +

+Lua initializes this table with four searcher functions. + + +

+The first searcher simply looks for a loader in the +package.preload table. + + +

+The second searcher looks for a loader as a Lua library, +using the path stored at package.path. +The search is done as described in function package.searchpath. + + +

+The third searcher looks for a loader as a C library, +using the path given by the variable package.cpath. +Again, +the search is done as described in function package.searchpath. +For instance, +if the C path is the string + +

+     "./?.so;./?.dll;/usr/local/?/init.so"
+

+the searcher for module foo +will try to open the files ./foo.so, ./foo.dll, +and /usr/local/foo/init.so, in that order. +Once it finds a C library, +this searcher first uses a dynamic link facility to link the +application with the library. +Then it tries to find a C function inside the library to +be used as the loader. +The name of this C function is the string "luaopen_" +concatenated with a copy of the module name where each dot +is replaced by an underscore. +Moreover, if the module name has a hyphen, +its suffix after (and including) the first hyphen is removed. +For instance, if the module name is a.b.c-v2.1, +the function name will be luaopen_a_b_c. + + +

+The fourth searcher tries an all-in-one loader. +It searches the C path for a library for +the root name of the given module. +For instance, when requiring a.b.c, +it will search for a C library for a. +If found, it looks into it for an open function for +the submodule; +in our example, that would be luaopen_a_b_c. +With this facility, a package can pack several C submodules +into one single library, +with each submodule keeping its original open function. + + +

+All searchers except the first one (preload) return as the extra value +the file name where the module was found, +as returned by package.searchpath. +The first searcher returns no extra value. + + + + +

+

package.searchpath (name, path [, sep [, rep]])

+ + +

+Searches for the given name in the given path. + + +

+A path is a string containing a sequence of +templates separated by semicolons. +For each template, +the function replaces each interrogation mark (if any) +in the template with a copy of name +wherein all occurrences of sep +(a dot, by default) +were replaced by rep +(the system's directory separator, by default), +and then tries to open the resulting file name. + + +

+For instance, if the path is the string + +

+     "./?.lua;./?.lc;/usr/local/?/init.lua"
+

+the search for the name foo.a +will try to open the files +./foo/a.lua, ./foo/a.lc, and +/usr/local/foo/a/init.lua, in that order. + + +

+Returns the resulting name of the first file that it can +open in read mode (after closing the file), +or nil plus an error message if none succeeds. +(This error message lists all file names it tried to open.) + + + + + + + +

6.4 – String Manipulation

+ +

+This library provides generic functions for string manipulation, +such as finding and extracting substrings, and pattern matching. +When indexing a string in Lua, the first character is at position 1 +(not at 0, as in C). +Indices are allowed to be negative and are interpreted as indexing backwards, +from the end of the string. +Thus, the last character is at position -1, and so on. + + +

+The string library provides all its functions inside the table +string. +It also sets a metatable for strings +where the __index field points to the string table. +Therefore, you can use the string functions in object-oriented style. +For instance, string.byte(s,i) +can be written as s:byte(i). + + +

+The string library assumes one-byte character encodings. + + +

+

string.byte (s [, i [, j]])

+Returns the internal numeric codes of the characters s[i], +s[i+1], ..., s[j]. +The default value for i is 1; +the default value for j is i. +These indices are corrected +following the same rules of function string.sub. + + +

+Numeric codes are not necessarily portable across platforms. + + + + +

+

string.char (···)

+Receives zero or more integers. +Returns a string with length equal to the number of arguments, +in which each character has the internal numeric code equal +to its corresponding argument. + + +

+Numeric codes are not necessarily portable across platforms. + + + + +

+

string.dump (function [, strip])

+ + +

+Returns a string containing a binary representation +(a binary chunk) +of the given function, +so that a later load on this string returns +a copy of the function (but with new upvalues). +If strip is a true value, +the binary representation may not include all debug information +about the function, +to save space. + + +

+Functions with upvalues have only their number of upvalues saved. +When (re)loaded, +those upvalues receive fresh instances containing nil. +(You can use the debug library to serialize +and reload the upvalues of a function +in a way adequate to your needs.) + + + + +

+

string.find (s, pattern [, init [, plain]])

+ + +

+Looks for the first match of +pattern (see §6.4.1) in the string s. +If it finds a match, then find returns the indices of s +where this occurrence starts and ends; +otherwise, it returns nil. +A third, optional numeric argument init specifies +where to start the search; +its default value is 1 and can be negative. +A value of true as a fourth, optional argument plain +turns off the pattern matching facilities, +so the function does a plain "find substring" operation, +with no characters in pattern being considered magic. +Note that if plain is given, then init must be given as well. + + +

+If the pattern has captures, +then in a successful match +the captured values are also returned, +after the two indices. + + + + +

+

string.format (formatstring, ···)

+ + +

+Returns a formatted version of its variable number of arguments +following the description given in its first argument (which must be a string). +The format string follows the same rules as the ISO C function sprintf. +The only differences are that the options/modifiers +*, h, L, l, n, +and p are not supported +and that there is an extra option, q. + + +

+The q option formats a string between double quotes, +using escape sequences when necessary to ensure that +it can safely be read back by the Lua interpreter. +For instance, the call + +

+     string.format('%q', 'a string with "quotes" and \n new line')
+

+may produce the string: + +

+     "a string with \"quotes\" and \
+      new line"
+
+ +

+Options +A, a, E, e, f, +G, and g all expect a number as argument. +Options c, d, +i, o, u, X, and x +expect an integer. +When Lua is compiled with a C89 compiler, +options A and a (hexadecimal floats) +do not support any modifier (flags, width, length). + + +

+Option s expects a string; +if its argument is not a string, +it is converted to one following the same rules of tostring. +If the option has any modifier (flags, width, length), +the string argument should not contain embedded zeros. + + + + +

+

string.gmatch (s, pattern)

+Returns an iterator function that, +each time it is called, +returns the next captures from pattern (see §6.4.1) +over the string s. +If pattern specifies no captures, +then the whole match is produced in each call. + + +

+As an example, the following loop +will iterate over all the words from string s, +printing one per line: + +

+     s = "hello world from Lua"
+     for w in string.gmatch(s, "%a+") do
+       print(w)
+     end
+

+The next example collects all pairs key=value from the +given string into a table: + +

+     t = {}
+     s = "from=world, to=Lua"
+     for k, v in string.gmatch(s, "(%w+)=(%w+)") do
+       t[k] = v
+     end
+
+ +

+For this function, a caret '^' at the start of a pattern does not +work as an anchor, as this would prevent the iteration. + + + + +

+

string.gsub (s, pattern, repl [, n])

+Returns a copy of s +in which all (or the first n, if given) +occurrences of the pattern (see §6.4.1) have been +replaced by a replacement string specified by repl, +which can be a string, a table, or a function. +gsub also returns, as its second value, +the total number of matches that occurred. +The name gsub comes from Global SUBstitution. + + +

+If repl is a string, then its value is used for replacement. +The character % works as an escape character: +any sequence in repl of the form %d, +with d between 1 and 9, +stands for the value of the d-th captured substring. +The sequence %0 stands for the whole match. +The sequence %% stands for a single %. + + +

+If repl is a table, then the table is queried for every match, +using the first capture as the key. + + +

+If repl is a function, then this function is called every time a +match occurs, with all captured substrings passed as arguments, +in order. + + +

+In any case, +if the pattern specifies no captures, +then it behaves as if the whole pattern was inside a capture. + + +

+If the value returned by the table query or by the function call +is a string or a number, +then it is used as the replacement string; +otherwise, if it is false or nil, +then there is no replacement +(that is, the original match is kept in the string). + + +

+Here are some examples: + +

+     x = string.gsub("hello world", "(%w+)", "%1 %1")
+     --> x="hello hello world world"
+     
+     x = string.gsub("hello world", "%w+", "%0 %0", 1)
+     --> x="hello hello world"
+     
+     x = string.gsub("hello world from Lua", "(%w+)%s*(%w+)", "%2 %1")
+     --> x="world hello Lua from"
+     
+     x = string.gsub("home = $HOME, user = $USER", "%$(%w+)", os.getenv)
+     --> x="home = /home/roberto, user = roberto"
+     
+     x = string.gsub("4+5 = $return 4+5$", "%$(.-)%$", function (s)
+           return load(s)()
+         end)
+     --> x="4+5 = 9"
+     
+     local t = {name="lua", version="5.3"}
+     x = string.gsub("$name-$version.tar.gz", "%$(%w+)", t)
+     --> x="lua-5.3.tar.gz"
+
+ + + +

+

string.len (s)

+Receives a string and returns its length. +The empty string "" has length 0. +Embedded zeros are counted, +so "a\000bc\000" has length 5. + + + + +

+

string.lower (s)

+Receives a string and returns a copy of this string with all +uppercase letters changed to lowercase. +All other characters are left unchanged. +The definition of what an uppercase letter is depends on the current locale. + + + + +

+

string.match (s, pattern [, init])

+Looks for the first match of +pattern (see §6.4.1) in the string s. +If it finds one, then match returns +the captures from the pattern; +otherwise it returns nil. +If pattern specifies no captures, +then the whole match is returned. +A third, optional numeric argument init specifies +where to start the search; +its default value is 1 and can be negative. + + + + +

+

string.pack (fmt, v1, v2, ···)

+ + +

+Returns a binary string containing the values v1, v2, etc. +packed (that is, serialized in binary form) +according to the format string fmt (see §6.4.2). + + + + +

+

string.packsize (fmt)

+ + +

+Returns the size of a string resulting from string.pack +with the given format. +The format string cannot have the variable-length options +'s' or 'z' (see §6.4.2). + + + + +

+

string.rep (s, n [, sep])

+Returns a string that is the concatenation of n copies of +the string s separated by the string sep. +The default value for sep is the empty string +(that is, no separator). +Returns the empty string if n is not positive. + + +

+(Note that it is very easy to exhaust the memory of your machine +with a single call to this function.) + + + + +

+

string.reverse (s)

+Returns a string that is the string s reversed. + + + + +

+

string.sub (s, i [, j])

+Returns the substring of s that +starts at i and continues until j; +i and j can be negative. +If j is absent, then it is assumed to be equal to -1 +(which is the same as the string length). +In particular, +the call string.sub(s,1,j) returns a prefix of s +with length j, +and string.sub(s, -i) (for a positive i) +returns a suffix of s +with length i. + + +

+If, after the translation of negative indices, +i is less than 1, +it is corrected to 1. +If j is greater than the string length, +it is corrected to that length. +If, after these corrections, +i is greater than j, +the function returns the empty string. + + + + +

+

string.unpack (fmt, s [, pos])

+ + +

+Returns the values packed in string s (see string.pack) +according to the format string fmt (see §6.4.2). +An optional pos marks where +to start reading in s (default is 1). +After the read values, +this function also returns the index of the first unread byte in s. + + + + +

+

string.upper (s)

+Receives a string and returns a copy of this string with all +lowercase letters changed to uppercase. +All other characters are left unchanged. +The definition of what a lowercase letter is depends on the current locale. + + + + + +

6.4.1 – Patterns

+ +

+Patterns in Lua are described by regular strings, +which are interpreted as patterns by the pattern-matching functions +string.find, +string.gmatch, +string.gsub, +and string.match. +This section describes the syntax and the meaning +(that is, what they match) of these strings. + + + +

Character Class:

+A character class is used to represent a set of characters. +The following combinations are allowed in describing a character class: + +

    + +
  • x: +(where x is not one of the magic characters +^$()%.[]*+-?) +represents the character x itself. +
    • + +
  • .: (a dot) represents all characters.
    • + +
  • %a: represents all letters.
    • + +
  • %c: represents all control characters.
    • + +
  • %d: represents all digits.
    • + +
  • %g: represents all printable characters except space.
    • + +
  • %l: represents all lowercase letters.
    • + +
  • %p: represents all punctuation characters.
    • + +
  • %s: represents all space characters.
    • + +
  • %u: represents all uppercase letters.
    • + +
  • %w: represents all alphanumeric characters.
    • + +
  • %x: represents all hexadecimal digits.
    • + +
  • %x: (where x is any non-alphanumeric character) +represents the character x. +This is the standard way to escape the magic characters. +Any non-alphanumeric character +(including all punctuation characters, even the non-magical) +can be preceded by a '%' +when used to represent itself in a pattern. +
    • + +
  • [set]: +represents the class which is the union of all +characters in set. +A range of characters can be specified by +separating the end characters of the range, +in ascending order, with a '-'. +All classes %x described above can also be used as +components in set. +All other characters in set represent themselves. +For example, [%w_] (or [_%w]) +represents all alphanumeric characters plus the underscore, +[0-7] represents the octal digits, +and [0-7%l%-] represents the octal digits plus +the lowercase letters plus the '-' character. + + +

    +You can put a closing square bracket in a set +by positioning it as the first character in the set. +You can put an hyphen in a set +by positioning it as the first or the last character in the set. +(You can also use an escape for both cases.) + + +

    +The interaction between ranges and classes is not defined. +Therefore, patterns like [%a-z] or [a-%%] +have no meaning. +

    • + +
  • [^set]: +represents the complement of set, +where set is interpreted as above. +
    • + +

+For all classes represented by single letters (%a, %c, etc.), +the corresponding uppercase letter represents the complement of the class. +For instance, %S represents all non-space characters. + + +

+The definitions of letter, space, and other character groups +depend on the current locale. +In particular, the class [a-z] may not be equivalent to %l. + + + + + +

Pattern Item:

+A pattern item can be + +

    + +
  • +a single character class, +which matches any single character in the class; +
    • + +
  • +a single character class followed by '*', +which matches zero or more repetitions of characters in the class. +These repetition items will always match the longest possible sequence; +
    • + +
  • +a single character class followed by '+', +which matches one or more repetitions of characters in the class. +These repetition items will always match the longest possible sequence; +
    • + +
  • +a single character class followed by '-', +which also matches zero or more repetitions of characters in the class. +Unlike '*', +these repetition items will always match the shortest possible sequence; +
    • + +
  • +a single character class followed by '?', +which matches zero or one occurrence of a character in the class. +It always matches one occurrence if possible; +
    • + +
  • +%n, for n between 1 and 9; +such item matches a substring equal to the n-th captured string +(see below); +
    • + +
  • +%bxy, where x and y are two distinct characters; +such item matches strings that start with x, end with y, +and where the x and y are balanced. +This means that, if one reads the string from left to right, +counting +1 for an x and -1 for a y, +the ending y is the first y where the count reaches 0. +For instance, the item %b() matches expressions with +balanced parentheses. +
    • + +
  • +%f[set], a frontier pattern; +such item matches an empty string at any position such that +the next character belongs to set +and the previous character does not belong to set. +The set set is interpreted as previously described. +The beginning and the end of the subject are handled as if +they were the character '\0'. +
    • + +
+ + + + +

Pattern:

+A pattern is a sequence of pattern items. +A caret '^' at the beginning of a pattern anchors the match at the +beginning of the subject string. +A '$' at the end of a pattern anchors the match at the +end of the subject string. +At other positions, +'^' and '$' have no special meaning and represent themselves. + + + + + +

Captures:

+A pattern can contain sub-patterns enclosed in parentheses; +they describe captures. +When a match succeeds, the substrings of the subject string +that match captures are stored (captured) for future use. +Captures are numbered according to their left parentheses. +For instance, in the pattern "(a*(.)%w(%s*))", +the part of the string matching "a*(.)%w(%s*)" is +stored as the first capture (and therefore has number 1); +the character matching "." is captured with number 2, +and the part matching "%s*" has number 3. + + +

+As a special case, the empty capture () captures +the current string position (a number). +For instance, if we apply the pattern "()aa()" on the +string "flaaap", there will be two captures: 3 and 5. + + + + + + + +

6.4.2 – Format Strings for Pack and Unpack

+ +

+The first argument to string.pack, +string.packsize, and string.unpack +is a format string, +which describes the layout of the structure being created or read. + + +

+A format string is a sequence of conversion options. +The conversion options are as follows: + +

    +
  • <: sets little endian
    • +
  • >: sets big endian
    • +
  • =: sets native endian
    • +
  • ![n]: sets maximum alignment to n +(default is native alignment)
    • +
  • b: a signed byte (char)
    • +
  • B: an unsigned byte (char)
    • +
  • h: a signed short (native size)
    • +
  • H: an unsigned short (native size)
    • +
  • l: a signed long (native size)
    • +
  • L: an unsigned long (native size)
    • +
  • j: a lua_Integer
    • +
  • J: a lua_Unsigned
    • +
  • T: a size_t (native size)
    • +
  • i[n]: a signed int with n bytes +(default is native size)
    • +
  • I[n]: an unsigned int with n bytes +(default is native size)
    • +
  • f: a float (native size)
    • +
  • d: a double (native size)
    • +
  • n: a lua_Number
    • +
  • cn: a fixed-sized string with n bytes
    • +
  • z: a zero-terminated string
    • +
  • s[n]: a string preceded by its length +coded as an unsigned integer with n bytes +(default is a size_t)
    • +
  • x: one byte of padding
    • +
  • Xop: an empty item that aligns +according to option op +(which is otherwise ignored)
    • +
  • ' ': (empty space) ignored
    • +

+(A "[n]" means an optional integral numeral.) +Except for padding, spaces, and configurations +(options "xX <=>!"), +each option corresponds to an argument (in string.pack) +or a result (in string.unpack). + + +

+For options "!n", "sn", "in", and "In", +n can be any integer between 1 and 16. +All integral options check overflows; +string.pack checks whether the given value fits in the given size; +string.unpack checks whether the read value fits in a Lua integer. + + +

+Any format string starts as if prefixed by "!1=", +that is, +with maximum alignment of 1 (no alignment) +and native endianness. + + +

+Alignment works as follows: +For each option, +the format gets extra padding until the data starts +at an offset that is a multiple of the minimum between the +option size and the maximum alignment; +this minimum must be a power of 2. +Options "c" and "z" are not aligned; +option "s" follows the alignment of its starting integer. + + +

+All padding is filled with zeros by string.pack +(and ignored by string.unpack). + + + + + + + +

6.5 – UTF-8 Support

+ +

+This library provides basic support for UTF-8 encoding. +It provides all its functions inside the table utf8. +This library does not provide any support for Unicode other +than the handling of the encoding. +Any operation that needs the meaning of a character, +such as character classification, is outside its scope. + + +

+Unless stated otherwise, +all functions that expect a byte position as a parameter +assume that the given position is either the start of a byte sequence +or one plus the length of the subject string. +As in the string library, +negative indices count from the end of the string. + + +

+

utf8.char (···)

+Receives zero or more integers, +converts each one to its corresponding UTF-8 byte sequence +and returns a string with the concatenation of all these sequences. + + + + +

+

utf8.charpattern

+The pattern (a string, not a function) "[\0-\x7F\xC2-\xF4][\x80-\xBF]*" +(see §6.4.1), +which matches exactly one UTF-8 byte sequence, +assuming that the subject is a valid UTF-8 string. + + + + +

+

utf8.codes (s)

+ + +

+Returns values so that the construction + +

+     for p, c in utf8.codes(s) do body end
+

+will iterate over all characters in string s, +with p being the position (in bytes) and c the code point +of each character. +It raises an error if it meets any invalid byte sequence. + + + + +

+

utf8.codepoint (s [, i [, j]])

+Returns the codepoints (as integers) from all characters in s +that start between byte position i and j (both included). +The default for i is 1 and for j is i. +It raises an error if it meets any invalid byte sequence. + + + + +

+

utf8.len (s [, i [, j]])

+Returns the number of UTF-8 characters in string s +that start between positions i and j (both inclusive). +The default for i is 1 and for j is -1. +If it finds any invalid byte sequence, +returns a false value plus the position of the first invalid byte. + + + + +

+

utf8.offset (s, n [, i])

+Returns the position (in bytes) where the encoding of the +n-th character of s +(counting from position i) starts. +A negative n gets characters before position i. +The default for i is 1 when n is non-negative +and #s + 1 otherwise, +so that utf8.offset(s, -n) gets the offset of the +n-th character from the end of the string. +If the specified character is neither in the subject +nor right after its end, +the function returns nil. + + +

+As a special case, +when n is 0 the function returns the start of the encoding +of the character that contains the i-th byte of s. + + +

+This function assumes that s is a valid UTF-8 string. + + + + + + + +

6.6 – Table Manipulation

+ +

+This library provides generic functions for table manipulation. +It provides all its functions inside the table table. + + +

+Remember that, whenever an operation needs the length of a table, +all caveats about the length operator apply (see §3.4.7). +All functions ignore non-numeric keys +in the tables given as arguments. + + +

+

table.concat (list [, sep [, i [, j]]])

+ + +

+Given a list where all elements are strings or numbers, +returns the string list[i]..sep..list[i+1] ··· sep..list[j]. +The default value for sep is the empty string, +the default for i is 1, +and the default for j is #list. +If i is greater than j, returns the empty string. + + + + +

+

table.insert (list, [pos,] value)

+ + +

+Inserts element value at position pos in list, +shifting up the elements +list[pos], list[pos+1], ···, list[#list]. +The default value for pos is #list+1, +so that a call table.insert(t,x) inserts x at the end +of list t. + + + + +

+

table.move (a1, f, e, t [,a2])

+ + +

+Moves elements from table a1 to table a2, +performing the equivalent to the following +multiple assignment: +a2[t],··· = a1[f],···,a1[e]. +The default for a2 is a1. +The destination range can overlap with the source range. +The number of elements to be moved must fit in a Lua integer. + + +

+Returns the destination table a2. + + + + +

+

table.pack (···)

+ + +

+Returns a new table with all parameters stored into keys 1, 2, etc. +and with a field "n" with the total number of parameters. +Note that the resulting table may not be a sequence. + + + + +

+

table.remove (list [, pos])

+ + +

+Removes from list the element at position pos, +returning the value of the removed element. +When pos is an integer between 1 and #list, +it shifts down the elements +list[pos+1], list[pos+2], ···, list[#list] +and erases element list[#list]; +The index pos can also be 0 when #list is 0, +or #list + 1; +in those cases, the function erases the element list[pos]. + + +

+The default value for pos is #list, +so that a call table.remove(l) removes the last element +of list l. + + + + +

+

table.sort (list [, comp])

+ + +

+Sorts list elements in a given order, in-place, +from list[1] to list[#list]. +If comp is given, +then it must be a function that receives two list elements +and returns true when the first element must come +before the second in the final order +(so that, after the sort, +i < j implies not comp(list[j],list[i])). +If comp is not given, +then the standard Lua operator < is used instead. + + +

+Note that the comp function must define +a strict partial order over the elements in the list; +that is, it must be asymmetric and transitive. +Otherwise, no valid sort may be possible. + + +

+The sort algorithm is not stable: +elements considered equal by the given order +may have their relative positions changed by the sort. + + + + +

+

table.unpack (list [, i [, j]])

+ + +

+Returns the elements from the given list. +This function is equivalent to + +

+     return list[i], list[i+1], ···, list[j]
+

+By default, i is 1 and j is #list. + + + + + + + +

6.7 – Mathematical Functions

+ +

+This library provides basic mathematical functions. +It provides all its functions and constants inside the table math. +Functions with the annotation "integer/float" give +integer results for integer arguments +and float results for float (or mixed) arguments. +Rounding functions +(math.ceil, math.floor, and math.modf) +return an integer when the result fits in the range of an integer, +or a float otherwise. + + +

+

math.abs (x)

+ + +

+Returns the absolute value of x. (integer/float) + + + + +

+

math.acos (x)

+ + +

+Returns the arc cosine of x (in radians). + + + + +

+

math.asin (x)

+ + +

+Returns the arc sine of x (in radians). + + + + +

+

math.atan (y [, x])

+ + +

+ +Returns the arc tangent of y/x (in radians), +but uses the signs of both parameters to find the +quadrant of the result. +(It also handles correctly the case of x being zero.) + + +

+The default value for x is 1, +so that the call math.atan(y) +returns the arc tangent of y. + + + + +

+

math.ceil (x)

+ + +

+Returns the smallest integral value larger than or equal to x. + + + + +

+

math.cos (x)

+ + +

+Returns the cosine of x (assumed to be in radians). + + + + +

+

math.deg (x)

+ + +

+Converts the angle x from radians to degrees. + + + + +

+

math.exp (x)

+ + +

+Returns the value ex +(where e is the base of natural logarithms). + + + + +

+

math.floor (x)

+ + +

+Returns the largest integral value smaller than or equal to x. + + + + +

+

math.fmod (x, y)

+ + +

+Returns the remainder of the division of x by y +that rounds the quotient towards zero. (integer/float) + + + + +

+

math.huge

+ + +

+The float value HUGE_VAL, +a value larger than any other numeric value. + + + + +

+

math.log (x [, base])

+ + +

+Returns the logarithm of x in the given base. +The default for base is e +(so that the function returns the natural logarithm of x). + + + + +

+

math.max (x, ···)

+ + +

+Returns the argument with the maximum value, +according to the Lua operator <. (integer/float) + + + + +

+

math.maxinteger

+An integer with the maximum value for an integer. + + + + +

+

math.min (x, ···)

+ + +

+Returns the argument with the minimum value, +according to the Lua operator <. (integer/float) + + + + +

+

math.mininteger

+An integer with the minimum value for an integer. + + + + +

+

math.modf (x)

+ + +

+Returns the integral part of x and the fractional part of x. +Its second result is always a float. + + + + +

+

math.pi

+ + +

+The value of π. + + + + +

+

math.rad (x)

+ + +

+Converts the angle x from degrees to radians. + + + + +

+

math.random ([m [, n]])

+ + +

+When called without arguments, +returns a pseudo-random float with uniform distribution +in the range [0,1). +When called with two integers m and n, +math.random returns a pseudo-random integer +with uniform distribution in the range [m, n]. +(The value n-m cannot be negative and must fit in a Lua integer.) +The call math.random(n) is equivalent to math.random(1,n). + + +

+This function is an interface to the underling +pseudo-random generator function provided by C. + + + + +

+

math.randomseed (x)

+ + +

+Sets x as the "seed" +for the pseudo-random generator: +equal seeds produce equal sequences of numbers. + + + + +

+

math.sin (x)

+ + +

+Returns the sine of x (assumed to be in radians). + + + + +

+

math.sqrt (x)

+ + +

+Returns the square root of x. +(You can also use the expression x^0.5 to compute this value.) + + + + +

+

math.tan (x)

+ + +

+Returns the tangent of x (assumed to be in radians). + + + + +

+

math.tointeger (x)

+ + +

+If the value x is convertible to an integer, +returns that integer. +Otherwise, returns nil. + + + + +

+

math.type (x)

+ + +

+Returns "integer" if x is an integer, +"float" if it is a float, +or nil if x is not a number. + + + + +

+

math.ult (m, n)

+ + +

+Returns a boolean, +true if and only if integer m is below integer n when +they are compared as unsigned integers. + + + + + + + +

6.8 – Input and Output Facilities

+ +

+The I/O library provides two different styles for file manipulation. +The first one uses implicit file handles; +that is, there are operations to set a default input file and a +default output file, +and all input/output operations are over these default files. +The second style uses explicit file handles. + + +

+When using implicit file handles, +all operations are supplied by table io. +When using explicit file handles, +the operation io.open returns a file handle +and then all operations are supplied as methods of the file handle. + + +

+The table io also provides +three predefined file handles with their usual meanings from C: +io.stdin, io.stdout, and io.stderr. +The I/O library never closes these files. + + +

+Unless otherwise stated, +all I/O functions return nil on failure +(plus an error message as a second result and +a system-dependent error code as a third result) +and some value different from nil on success. +On non-POSIX systems, +the computation of the error message and error code +in case of errors +may be not thread safe, +because they rely on the global C variable errno. + + +

+

io.close ([file])

+ + +

+Equivalent to file:close(). +Without a file, closes the default output file. + + + + +

+

io.flush ()

+ + +

+Equivalent to io.output():flush(). + + + + +

+

io.input ([file])

+ + +

+When called with a file name, it opens the named file (in text mode), +and sets its handle as the default input file. +When called with a file handle, +it simply sets this file handle as the default input file. +When called without parameters, +it returns the current default input file. + + +

+In case of errors this function raises the error, +instead of returning an error code. + + + + +

+

io.lines ([filename, ···])

+ + +

+Opens the given file name in read mode +and returns an iterator function that +works like file:lines(···) over the opened file. +When the iterator function detects the end of file, +it returns no values (to finish the loop) and automatically closes the file. + + +

+The call io.lines() (with no file name) is equivalent +to io.input():lines("*l"); +that is, it iterates over the lines of the default input file. +In this case it does not close the file when the loop ends. + + +

+In case of errors this function raises the error, +instead of returning an error code. + + + + +

+

io.open (filename [, mode])

+ + +

+This function opens a file, +in the mode specified in the string mode. +In case of success, +it returns a new file handle. + + +

+The mode string can be any of the following: + +

    +
  • "r": read mode (the default);
    • +
  • "w": write mode;
    • +
  • "a": append mode;
    • +
  • "r+": update mode, all previous data is preserved;
    • +
  • "w+": update mode, all previous data is erased;
    • +
  • "a+": append update mode, previous data is preserved, + writing is only allowed at the end of file.
    • +

+The mode string can also have a 'b' at the end, +which is needed in some systems to open the file in binary mode. + + + + +

+

io.output ([file])

+ + +

+Similar to io.input, but operates over the default output file. + + + + +

+

io.popen (prog [, mode])

+ + +

+This function is system dependent and is not available +on all platforms. + + +

+Starts program prog in a separated process and returns +a file handle that you can use to read data from this program +(if mode is "r", the default) +or to write data to this program +(if mode is "w"). + + + + +

+

io.read (···)

+ + +

+Equivalent to io.input():read(···). + + + + +

+

io.tmpfile ()

+ + +

+In case of success, +returns a handle for a temporary file. +This file is opened in update mode +and it is automatically removed when the program ends. + + + + +

+

io.type (obj)

+ + +

+Checks whether obj is a valid file handle. +Returns the string "file" if obj is an open file handle, +"closed file" if obj is a closed file handle, +or nil if obj is not a file handle. + + + + +

+

io.write (···)

+ + +

+Equivalent to io.output():write(···). + + + + +

+

file:close ()

+ + +

+Closes file. +Note that files are automatically closed when +their handles are garbage collected, +but that takes an unpredictable amount of time to happen. + + +

+When closing a file handle created with io.popen, +file:close returns the same values +returned by os.execute. + + + + +

+

file:flush ()

+ + +

+Saves any written data to file. + + + + +

+

file:lines (···)

+ + +

+Returns an iterator function that, +each time it is called, +reads the file according to the given formats. +When no format is given, +uses "l" as a default. +As an example, the construction + +

+     for c in file:lines(1) do body end
+

+will iterate over all characters of the file, +starting at the current position. +Unlike io.lines, this function does not close the file +when the loop ends. + + +

+In case of errors this function raises the error, +instead of returning an error code. + + + + +

+

file:read (···)

+ + +

+Reads the file file, +according to the given formats, which specify what to read. +For each format, +the function returns a string or a number with the characters read, +or nil if it cannot read data with the specified format. +(In this latter case, +the function does not read subsequent formats.) +When called without formats, +it uses a default format that reads the next line +(see below). + + +

+The available formats are + +

    + +
  • "n": +reads a numeral and returns it as a float or an integer, +following the lexical conventions of Lua. +(The numeral may have leading spaces and a sign.) +This format always reads the longest input sequence that +is a valid prefix for a numeral; +if that prefix does not form a valid numeral +(e.g., an empty string, "0x", or "3.4e-"), +it is discarded and the function returns nil. +
    • + +
  • "a": +reads the whole file, starting at the current position. +On end of file, it returns the empty string. +
    • + +
  • "l": +reads the next line skipping the end of line, +returning nil on end of file. +This is the default format. +
    • + +
  • "L": +reads the next line keeping the end-of-line character (if present), +returning nil on end of file. +
    • + +
  • number: +reads a string with up to this number of bytes, +returning nil on end of file. +If number is zero, +it reads nothing and returns an empty string, +or nil on end of file. +
    • + +

+The formats "l" and "L" should be used only for text files. + + + + +

+

file:seek ([whence [, offset]])

+ + +

+Sets and gets the file position, +measured from the beginning of the file, +to the position given by offset plus a base +specified by the string whence, as follows: + +

    +
  • "set": base is position 0 (beginning of the file);
    • +
  • "cur": base is current position;
    • +
  • "end": base is end of file;
    • +

+In case of success, seek returns the final file position, +measured in bytes from the beginning of the file. +If seek fails, it returns nil, +plus a string describing the error. + + +

+The default value for whence is "cur", +and for offset is 0. +Therefore, the call file:seek() returns the current +file position, without changing it; +the call file:seek("set") sets the position to the +beginning of the file (and returns 0); +and the call file:seek("end") sets the position to the +end of the file, and returns its size. + + + + +

+

file:setvbuf (mode [, size])

+ + +

+Sets the buffering mode for an output file. +There are three available modes: + +

    + +
  • "no": +no buffering; the result of any output operation appears immediately. +
    • + +
  • "full": +full buffering; output operation is performed only +when the buffer is full or when +you explicitly flush the file (see io.flush). +
    • + +
  • "line": +line buffering; output is buffered until a newline is output +or there is any input from some special files +(such as a terminal device). +
    • + +

+For the last two cases, size +specifies the size of the buffer, in bytes. +The default is an appropriate size. + + + + +

+

file:write (···)

+ + +

+Writes the value of each of its arguments to file. +The arguments must be strings or numbers. + + +

+In case of success, this function returns file. +Otherwise it returns nil plus a string describing the error. + + + + + + + +

6.9 – Operating System Facilities

+ +

+This library is implemented through table os. + + +

+

os.clock ()

+ + +

+Returns an approximation of the amount in seconds of CPU time +used by the program. + + + + +

+

os.date ([format [, time]])

+ + +

+Returns a string or a table containing date and time, +formatted according to the given string format. + + +

+If the time argument is present, +this is the time to be formatted +(see the os.time function for a description of this value). +Otherwise, date formats the current time. + + +

+If format starts with '!', +then the date is formatted in Coordinated Universal Time. +After this optional character, +if format is the string "*t", +then date returns a table with the following fields: +year, month (1–12), day (1–31), +hour (0–23), min (0–59), sec (0–61), +wday (weekday, 1–7, Sunday is 1), +yday (day of the year, 1–366), +and isdst (daylight saving flag, a boolean). +This last field may be absent +if the information is not available. + + +

+If format is not "*t", +then date returns the date as a string, +formatted according to the same rules as the ISO C function strftime. + + +

+When called without arguments, +date returns a reasonable date and time representation that depends on +the host system and on the current locale. +(More specifically, os.date() is equivalent to os.date("%c").) + + +

+On non-POSIX systems, +this function may be not thread safe +because of its reliance on C function gmtime and C function localtime. + + + + +

+

os.difftime (t2, t1)

+ + +

+Returns the difference, in seconds, +from time t1 to time t2 +(where the times are values returned by os.time). +In POSIX, Windows, and some other systems, +this value is exactly t2-t1. + + + + +

+

os.execute ([command])

+ + +

+This function is equivalent to the ISO C function system. +It passes command to be executed by an operating system shell. +Its first result is true +if the command terminated successfully, +or nil otherwise. +After this first result +the function returns a string plus a number, +as follows: + +

    + +
  • "exit": +the command terminated normally; +the following number is the exit status of the command. +
    • + +
  • "signal": +the command was terminated by a signal; +the following number is the signal that terminated the command. +
    • + +
+ +

+When called without a command, +os.execute returns a boolean that is true if a shell is available. + + + + +

+

os.exit ([code [, close]])

+ + +

+Calls the ISO C function exit to terminate the host program. +If code is true, +the returned status is EXIT_SUCCESS; +if code is false, +the returned status is EXIT_FAILURE; +if code is a number, +the returned status is this number. +The default value for code is true. + + +

+If the optional second argument close is true, +closes the Lua state before exiting. + + + + +

+

os.getenv (varname)

+ + +

+Returns the value of the process environment variable varname, +or nil if the variable is not defined. + + + + +

+

os.remove (filename)

+ + +

+Deletes the file (or empty directory, on POSIX systems) +with the given name. +If this function fails, it returns nil, +plus a string describing the error and the error code. +Otherwise, it returns true. + + + + +

+

os.rename (oldname, newname)

+ + +

+Renames the file or directory named oldname to newname. +If this function fails, it returns nil, +plus a string describing the error and the error code. +Otherwise, it returns true. + + + + +

+

os.setlocale (locale [, category])

+ + +

+Sets the current locale of the program. +locale is a system-dependent string specifying a locale; +category is an optional string describing which category to change: +"all", "collate", "ctype", +"monetary", "numeric", or "time"; +the default category is "all". +The function returns the name of the new locale, +or nil if the request cannot be honored. + + +

+If locale is the empty string, +the current locale is set to an implementation-defined native locale. +If locale is the string "C", +the current locale is set to the standard C locale. + + +

+When called with nil as the first argument, +this function only returns the name of the current locale +for the given category. + + +

+This function may be not thread safe +because of its reliance on C function setlocale. + + + + +

+

os.time ([table])

+ + +

+Returns the current time when called without arguments, +or a time representing the local date and time specified by the given table. +This table must have fields year, month, and day, +and may have fields +hour (default is 12), +min (default is 0), +sec (default is 0), +and isdst (default is nil). +Other fields are ignored. +For a description of these fields, see the os.date function. + + +

+The values in these fields do not need to be inside their valid ranges. +For instance, if sec is -10, +it means -10 seconds from the time specified by the other fields; +if hour is 1000, +it means +1000 hours from the time specified by the other fields. + + +

+The returned value is a number, whose meaning depends on your system. +In POSIX, Windows, and some other systems, +this number counts the number +of seconds since some given start time (the "epoch"). +In other systems, the meaning is not specified, +and the number returned by time can be used only as an argument to +os.date and os.difftime. + + + + +

+

os.tmpname ()

+ + +

+Returns a string with a file name that can +be used for a temporary file. +The file must be explicitly opened before its use +and explicitly removed when no longer needed. + + +

+On POSIX systems, +this function also creates a file with that name, +to avoid security risks. +(Someone else might create the file with wrong permissions +in the time between getting the name and creating the file.) +You still have to open the file to use it +and to remove it (even if you do not use it). + + +

+When possible, +you may prefer to use io.tmpfile, +which automatically removes the file when the program ends. + + + + + + + +

6.10 – The Debug Library

+ +

+This library provides +the functionality of the debug interface (§4.9) to Lua programs. +You should exert care when using this library. +Several of its functions +violate basic assumptions about Lua code +(e.g., that variables local to a function +cannot be accessed from outside; +that userdata metatables cannot be changed by Lua code; +that Lua programs do not crash) +and therefore can compromise otherwise secure code. +Moreover, some functions in this library may be slow. + + +

+All functions in this library are provided +inside the debug table. +All functions that operate over a thread +have an optional first argument which is the +thread to operate over. +The default is always the current thread. + + +

+

debug.debug ()

+ + +

+Enters an interactive mode with the user, +running each string that the user enters. +Using simple commands and other debug facilities, +the user can inspect global and local variables, +change their values, evaluate expressions, and so on. +A line containing only the word cont finishes this function, +so that the caller continues its execution. + + +

+Note that commands for debug.debug are not lexically nested +within any function and so have no direct access to local variables. + + + + +

+

debug.gethook ([thread])

+ + +

+Returns the current hook settings of the thread, as three values: +the current hook function, the current hook mask, +and the current hook count +(as set by the debug.sethook function). + + + + +

+

debug.getinfo ([thread,] f [, what])

+ + +

+Returns a table with information about a function. +You can give the function directly +or you can give a number as the value of f, +which means the function running at level f of the call stack +of the given thread: +level 0 is the current function (getinfo itself); +level 1 is the function that called getinfo +(except for tail calls, which do not count on the stack); +and so on. +If f is a number larger than the number of active functions, +then getinfo returns nil. + + +

+The returned table can contain all the fields returned by lua_getinfo, +with the string what describing which fields to fill in. +The default for what is to get all information available, +except the table of valid lines. +If present, +the option 'f' +adds a field named func with the function itself. +If present, +the option 'L' +adds a field named activelines with the table of +valid lines. + + +

+For instance, the expression debug.getinfo(1,"n").name returns +a name for the current function, +if a reasonable name can be found, +and the expression debug.getinfo(print) +returns a table with all available information +about the print function. + + + + +

+

debug.getlocal ([thread,] f, local)

+ + +

+This function returns the name and the value of the local variable +with index local of the function at level f of the stack. +This function accesses not only explicit local variables, +but also parameters, temporaries, etc. + + +

+The first parameter or local variable has index 1, and so on, +following the order that they are declared in the code, +counting only the variables that are active +in the current scope of the function. +Negative indices refer to vararg parameters; +-1 is the first vararg parameter. +The function returns nil if there is no variable with the given index, +and raises an error when called with a level out of range. +(You can call debug.getinfo to check whether the level is valid.) + + +

+Variable names starting with '(' (open parenthesis) +represent variables with no known names +(internal variables such as loop control variables, +and variables from chunks saved without debug information). + + +

+The parameter f may also be a function. +In that case, getlocal returns only the name of function parameters. + + + + +

+

debug.getmetatable (value)

+ + +

+Returns the metatable of the given value +or nil if it does not have a metatable. + + + + +

+

debug.getregistry ()

+ + +

+Returns the registry table (see §4.5). + + + + +

+

debug.getupvalue (f, up)

+ + +

+This function returns the name and the value of the upvalue +with index up of the function f. +The function returns nil if there is no upvalue with the given index. + + +

+Variable names starting with '(' (open parenthesis) +represent variables with no known names +(variables from chunks saved without debug information). + + + + +

+

debug.getuservalue (u)

+ + +

+Returns the Lua value associated to u. +If u is not a full userdata, +returns nil. + + + + +

+

debug.sethook ([thread,] hook, mask [, count])

+ + +

+Sets the given function as a hook. +The string mask and the number count describe +when the hook will be called. +The string mask may have any combination of the following characters, +with the given meaning: + +

    +
  • 'c': the hook is called every time Lua calls a function;
    • +
  • 'r': the hook is called every time Lua returns from a function;
    • +
  • 'l': the hook is called every time Lua enters a new line of code.
    • +

+Moreover, +with a count different from zero, +the hook is called also after every count instructions. + + +

+When called without arguments, +debug.sethook turns off the hook. + + +

+When the hook is called, its first parameter is a string +describing the event that has triggered its call: +"call" (or "tail call"), +"return", +"line", and "count". +For line events, +the hook also gets the new line number as its second parameter. +Inside a hook, +you can call getinfo with level 2 to get more information about +the running function +(level 0 is the getinfo function, +and level 1 is the hook function). + + + + +

+

debug.setlocal ([thread,] level, local, value)

+ + +

+This function assigns the value value to the local variable +with index local of the function at level level of the stack. +The function returns nil if there is no local +variable with the given index, +and raises an error when called with a level out of range. +(You can call getinfo to check whether the level is valid.) +Otherwise, it returns the name of the local variable. + + +

+See debug.getlocal for more information about +variable indices and names. + + + + +

+

debug.setmetatable (value, table)

+ + +

+Sets the metatable for the given value to the given table +(which can be nil). +Returns value. + + + + +

+

debug.setupvalue (f, up, value)

+ + +

+This function assigns the value value to the upvalue +with index up of the function f. +The function returns nil if there is no upvalue +with the given index. +Otherwise, it returns the name of the upvalue. + + + + +

+

debug.setuservalue (udata, value)

+ + +

+Sets the given value as +the Lua value associated to the given udata. +udata must be a full userdata. + + +

+Returns udata. + + + + +

+

debug.traceback ([thread,] [message [, level]])

+ + +

+If message is present but is neither a string nor nil, +this function returns message without further processing. +Otherwise, +it returns a string with a traceback of the call stack. +The optional message string is appended +at the beginning of the traceback. +An optional level number tells at which level +to start the traceback +(default is 1, the function calling traceback). + + + + +

+

debug.upvalueid (f, n)

+ + +

+Returns a unique identifier (as a light userdata) +for the upvalue numbered n +from the given function. + + +

+These unique identifiers allow a program to check whether different +closures share upvalues. +Lua closures that share an upvalue +(that is, that access a same external local variable) +will return identical ids for those upvalue indices. + + + + +

+

debug.upvaluejoin (f1, n1, f2, n2)

+ + +

+Make the n1-th upvalue of the Lua closure f1 +refer to the n2-th upvalue of the Lua closure f2. + + + + + + + +

7 – Lua Standalone

+ +

+Although Lua has been designed as an extension language, +to be embedded in a host C program, +it is also frequently used as a standalone language. +An interpreter for Lua as a standalone language, +called simply lua, +is provided with the standard distribution. +The standalone interpreter includes +all standard libraries, including the debug library. +Its usage is: + +

+     lua [options] [script [args]]
+

+The options are: + +

    +
  • -e stat: executes string stat;
    • +
  • -l mod: "requires" mod;
    • +
  • -i: enters interactive mode after running script;
    • +
  • -v: prints version information;
    • +
  • -E: ignores environment variables;
    • +
  • --: stops handling options;
    • +
  • -: executes stdin as a file and stops handling options.
    • +

+After handling its options, lua runs the given script. +When called without arguments, +lua behaves as lua -v -i +when the standard input (stdin) is a terminal, +and as lua - otherwise. + + +

+When called without option -E, +the interpreter checks for an environment variable LUA_INIT_5_3 +(or LUA_INIT if the versioned name is not defined) +before running any argument. +If the variable content has the format @filename, +then lua executes the file. +Otherwise, lua executes the string itself. + + +

+When called with option -E, +besides ignoring LUA_INIT, +Lua also ignores +the values of LUA_PATH and LUA_CPATH, +setting the values of +package.path and package.cpath +with the default paths defined in luaconf.h. + + +

+All options are handled in order, except -i and -E. +For instance, an invocation like + +

+     $ lua -e'a=1' -e 'print(a)' script.lua
+

+will first set a to 1, then print the value of a, +and finally run the file script.lua with no arguments. +(Here $ is the shell prompt. Your prompt may be different.) + + +

+Before running any code, +lua collects all command-line arguments +in a global table called arg. +The script name goes to index 0, +the first argument after the script name goes to index 1, +and so on. +Any arguments before the script name +(that is, the interpreter name plus its options) +go to negative indices. +For instance, in the call + +

+     $ lua -la b.lua t1 t2
+

+the table is like this: + +

+     arg = { [-2] = "lua", [-1] = "-la",
+             [0] = "b.lua",
+             [1] = "t1", [2] = "t2" }
+

+If there is no script in the call, +the interpreter name goes to index 0, +followed by the other arguments. +For instance, the call + +

+     $ lua -e "print(arg[1])"
+

+will print "-e". +If there is a script, +the script is called with parameters +arg[1], ···, arg[#arg]. +(Like all chunks in Lua, +the script is compiled as a vararg function.) + + +

+In interactive mode, +Lua repeatedly prompts and waits for a line. +After reading a line, +Lua first try to interpret the line as an expression. +If it succeeds, it prints its value. +Otherwise, it interprets the line as a statement. +If you write an incomplete statement, +the interpreter waits for its completion +by issuing a different prompt. + + +

+If the global variable _PROMPT contains a string, +then its value is used as the prompt. +Similarly, if the global variable _PROMPT2 contains a string, +its value is used as the secondary prompt +(issued during incomplete statements). + + +

+In case of unprotected errors in the script, +the interpreter reports the error to the standard error stream. +If the error object is not a string but +has a metamethod __tostring, +the interpreter calls this metamethod to produce the final message. +Otherwise, the interpreter converts the error object to a string +and adds a stack traceback to it. + + +

+When finishing normally, +the interpreter closes its main Lua state +(see lua_close). +The script can avoid this step by +calling os.exit to terminate. + + +

+To allow the use of Lua as a +script interpreter in Unix systems, +the standalone interpreter skips +the first line of a chunk if it starts with #. +Therefore, Lua scripts can be made into executable programs +by using chmod +x and the #! form, +as in + +

+     #!/usr/local/bin/lua
+

+(Of course, +the location of the Lua interpreter may be different in your machine. +If lua is in your PATH, +then + +

+     #!/usr/bin/env lua
+

+is a more portable solution.) + + + +

8 – Incompatibilities with the Previous Version

+ +

+Here we list the incompatibilities that you may find when moving a program +from Lua 5.2 to Lua 5.3. +You can avoid some incompatibilities by compiling Lua with +appropriate options (see file luaconf.h). +However, +all these compatibility options will be removed in the future. + + +

+Lua versions can always change the C API in ways that +do not imply source-code changes in a program, +such as the numeric values for constants +or the implementation of functions as macros. +Therefore, +you should not assume that binaries are compatible between +different Lua versions. +Always recompile clients of the Lua API when +using a new version. + + +

+Similarly, Lua versions can always change the internal representation +of precompiled chunks; +precompiled chunks are not compatible between different Lua versions. + + +

+The standard paths in the official distribution may +change between versions. + + + +

8.1 – Changes in the Language

+
    + +
  • +The main difference between Lua 5.2 and Lua 5.3 is the +introduction of an integer subtype for numbers. +Although this change should not affect "normal" computations, +some computations +(mainly those that involve some kind of overflow) +can give different results. + + +

    +You can fix these differences by forcing a number to be a float +(in Lua 5.2 all numbers were float), +in particular writing constants with an ending .0 +or using x = x + 0.0 to convert a variable. +(This recommendation is only for a quick fix +for an occasional incompatibility; +it is not a general guideline for good programming. +For good programming, +use floats where you need floats +and integers where you need integers.) +

    • + +
  • +The conversion of a float to a string now adds a .0 suffix +to the result if it looks like an integer. +(For instance, the float 2.0 will be printed as 2.0, +not as 2.) +You should always use an explicit format +when you need a specific format for numbers. + + +

    +(Formally this is not an incompatibility, +because Lua does not specify how numbers are formatted as strings, +but some programs assumed a specific format.) +

    • + +
  • +The generational mode for the garbage collector was removed. +(It was an experimental feature in Lua 5.2.) +
    • + +
+ + + + +

8.2 – Changes in the Libraries

+
    + +
  • +The bit32 library has been deprecated. +It is easy to require a compatible external library or, +better yet, to replace its functions with appropriate bitwise operations. +(Keep in mind that bit32 operates on 32-bit integers, +while the bitwise operators in Lua 5.3 operate on Lua integers, +which by default have 64 bits.) +
    • + +
  • +The Table library now respects metamethods +for setting and getting elements. +
    • + +
  • +The ipairs iterator now respects metamethods and +its __ipairs metamethod has been deprecated. +
    • + +
  • +Option names in io.read do not have a starting '*' anymore. +For compatibility, Lua will continue to accept (and ignore) this character. +
    • + +
  • +The following functions were deprecated in the mathematical library: +atan2, cosh, sinh, tanh, pow, +frexp, and ldexp. +You can replace math.pow(x,y) with x^y; +you can replace math.atan2 with math.atan, +which now accepts one or two parameters; +you can replace math.ldexp(x,exp) with x * 2.0^exp. +For the other operations, +you can either use an external library or +implement them in Lua. +
    • + +
  • +The searcher for C loaders used by require +changed the way it handles versioned names. +Now, the version should come after the module name +(as is usual in most other tools). +For compatibility, that searcher still tries the old format +if it cannot find an open function according to the new style. +(Lua 5.2 already worked that way, +but it did not document the change.) +
    • + +
  • +The call collectgarbage("count") now returns only one result. +(You can compute that second result from the fractional part +of the first result.) +
    • + +
+ + + + +

8.3 – Changes in the API

+ + +
    + +
  • +Continuation functions now receive as parameters what they needed +to get through lua_getctx, +so lua_getctx has been removed. +Adapt your code accordingly. +
    • + +
  • +Function lua_dump has an extra parameter, strip. +Use 0 as the value of this parameter to get the old behavior. +
    • + +
  • +Functions to inject/project unsigned integers +(lua_pushunsigned, lua_tounsigned, lua_tounsignedx, +luaL_checkunsigned, luaL_optunsigned) +were deprecated. +Use their signed equivalents with a type cast. +
    • + +
  • +Macros to project non-default integer types +(luaL_checkint, luaL_optint, luaL_checklong, luaL_optlong) +were deprecated. +Use their equivalent over lua_Integer with a type cast +(or, when possible, use lua_Integer in your code). +
    • + +
+ + + + +

9 – The Complete Syntax of Lua

+ +

+Here is the complete syntax of Lua in extended BNF. +As usual in extended BNF, +{A} means 0 or more As, +and [A] means an optional A. +(For operator precedences, see §3.4.8; +for a description of the terminals +Name, Numeral, +and LiteralString, see §3.1.) + + + + +

+
+	chunk ::= block
+
+	block ::= {stat} [retstat]
+
+	stat ::=  ‘;’ | 
+		 varlist ‘=’ explist | 
+		 functioncall | 
+		 label | 
+		 break | 
+		 goto Name | 
+		 do block end | 
+		 while exp do block end | 
+		 repeat block until exp | 
+		 if exp then block {elseif exp then block} [else block] end | 
+		 for Name ‘=’ exp ‘,’ exp [‘,’ exp] do block end | 
+		 for namelist in explist do block end | 
+		 function funcname funcbody | 
+		 local function Name funcbody | 
+		 local namelist [‘=’ explist] 
+
+	retstat ::= return [explist] [‘;’]
+
+	label ::= ‘::’ Name ‘::’
+
+	funcname ::= Name {‘.’ Name} [‘:’ Name]
+
+	varlist ::= var {‘,’ var}
+
+	var ::=  Name | prefixexp ‘[’ exp ‘]’ | prefixexp ‘.’ Name 
+
+	namelist ::= Name {‘,’ Name}
+
+	explist ::= exp {‘,’ exp}
+
+	exp ::=  nil | false | true | Numeral | LiteralString | ‘...’ | functiondef | 
+		 prefixexp | tableconstructor | exp binop exp | unop exp 
+
+	prefixexp ::= var | functioncall | ‘(’ exp ‘)’
+
+	functioncall ::=  prefixexp args | prefixexp ‘:’ Name args 
+
+	args ::=  ‘(’ [explist] ‘)’ | tableconstructor | LiteralString 
+
+	functiondef ::= function funcbody
+
+	funcbody ::= ‘(’ [parlist] ‘)’ block end
+
+	parlist ::= namelist [‘,’ ‘...’] | ‘...’
+
+	tableconstructor ::= ‘{’ [fieldlist] ‘}’
+
+	fieldlist ::= field {fieldsep field} [fieldsep]
+
+	field ::= ‘[’ exp ‘]’ ‘=’ exp | Name ‘=’ exp | exp
+
+	fieldsep ::= ‘,’ | ‘;’
+
+	binop ::=  ‘+’ | ‘-’ | ‘*’ | ‘/’ | ‘//’ | ‘^’ | ‘%’ | 
+		 ‘&’ | ‘~’ | ‘|’ | ‘>>’ | ‘<<’ | ‘..’ | 
+		 ‘<’ | ‘<=’ | ‘>’ | ‘>=’ | ‘==’ | ‘~=’ | 
+		 and | or
+
+	unop ::= ‘-’ | not | ‘#’ | ‘~’
+
+
+ +

+ + + + + + + +

+Last update: +Mon Jan 9 13:30:53 BRST 2017 +

+ + + + diff --git a/deps/rcheevos/test/lua/doc/osi-certified-72x60.png b/deps/rcheevos/test/lua/doc/osi-certified-72x60.png new file mode 100644 index 0000000000000000000000000000000000000000..07df5f6ee7a7a8b2108025dcd815f73f145a83af GIT binary patch literal 3774 zcmV;v4ngsWP)$kl5 zqcT7g&?zu8?ezWYz4zUB-|zR9d+&Qy2xAN{qY(ew0A7^*gV^7jytKqPFV3{hZfovn zs%x!l>(m&Gdb8C+5XeR7>h0kj=o=X3A39;2KLYfEMt>p1YMW~dt`rpAC{lN~P>5pq zH1L4nAdCT17}*hN=LnEsvMl=5Ij^QArAa&_V~zoht-Ei~)E~(Ivhe0#jik{t$isEK znCH$TxCB8EKmcF>3@pRaHpbR%Gqm*dsZA4H{j(NjZFp^iNFW+RBx6R*X19J*`0XG5 z^Y>cR=^Hi9#ovYGlbFSr#Q*^PgCGC^gb*SC5TcBfzQLe-r2m!Quik&_g9XzTj0qSR zD`FkG_RYWDa^+#UUxL&t+!K+&(ion@Fd`5l5p7{Qsva9vegC|4^NzJUMvn)^gqWsF zvu^j=%FfCVg^cgbXDRl1DE$lsfe;BjjmFmRHER~E-MeWoNsyyNHCpG%Y}igd_(Md;&9La8_B075NDRX9gTD zIHY`}9E~aGi9Kk1@P~rmPna=*=gz~UTdTpsQmjX)J23%v9NliQS)8`xJh6Qz_nE~e z&tP|!dcJdo;JMNa3>afSx$lko8>fp-I}OiCVz(dOF1u6e8$IrsSP?=5mp~lkaFqm? zAUMxRq%ecIu3WE)Uf=%p8g z+RSY?G=VO%wAfdICj?Uzb+5jr{8m|)i#{M}JjaDIoXf#1=DYLwX;1EW&sijPvm6EkBGuOx6r~lKv`g`yH?)|&PRUr$5Ibw2HBM7C74XvE@gaPjN+@;j$J)AgYhnT-U5m+wj|Wz8K630AfO8PUoGD^^Mcq zY9C<~%wUm^u%ox5P21)KNN0$(v^OI$A~?iwsS_fRu1+`EH|CRdpA4zsk8Z#|?x@^vVEAL+2JxH%&^{JUU%B=?EU7`Ar*Q|JvqPofcBt765(*f5JI$>=3{<%K)4ei zogo$)5XP}_X$y^pIYyWTt}EAnhTq}u4sAdBvC(WC{I#x4^>$vCvQ0UDs^18sAQG9o zEaP0qjrSSv1W0FyO%9&y$@em~n@8}}EXBG6x%ew49J_q%l@As_XnNpi|MTTPr~ca_ zW%uon6dBKL*pvzYFvf<~p6K8hK9BDNNN0$7xp^hWC3n^7FoQ?P(=m(6!Pj&S2f1fqH=`(w)KcPl5aEi2}~4hF*f*g}vaS-=c7v>N8c z{yNM*%+azq=@prWtgpi~^3?^AsJqS(>=pb=6PrGH#=O{Hcho$_F#MtsK$$3e2fZvg zy}!-V%`+uFMOW87LIgu3vKuMgqwY0}*Sd;aokQp(F#-{}Ss(Iy1iekY1ZQX?1WEL? z7=zq`lH-#Hw=bHRio3yPun%`c5rI1Hb|wTSWTs|12Mg#QkkwTmy zAYul0H*_b(BnkP#!R_&p@d54uz0JKthGv3C^fdKS%~alookE`QX@%#MQN2=SFWrOha7Ij7ImStNaWsy~? zsylUeT02_-z-G4s0L!v=+Wx|cxr$tmY&$a1by8z#6HBp!*9{@mU9XQ0h@L%V_R}4g z&s#2{MCOj4`5ux-SUautC5@{U895o-biKMWWoQ09{|jx8wz}@_(ep%Yk4{90C#s6-sa}fU5{}m>#>VtE_b#5bn8O+3k{&6GoEkB;yGie;A_5Uy zqPN*tU()pE+_&~``5XX({el-xT_}%`%fsc>_0@m5{+FhXru>rpyLESe31R>cK^FFrCm+#WL$-D{Z3*9>Lg{wi}xEYn_`@Hy`-d z1N}kIY%@Eu&Bpe|Rr6N;%Yk>6&RI$lgpIO26BYT%C!dU-o4bqqQpGY?p6lPru6Hzc z@WuSDI^BYaDH*>R)~)$V1J0Edn4r(9vo>E<2XjOJr2*G124;t^U+p{iUnZN5oapCpCk(F}}<#3ZZli!Nk z^UWT;Q9qm-i`i$kJS}5P%puBJ<&krTO;*#$Y7d$o96EbQ{aF1XFpTj}wf}eI|IOba z%w}_CWu?JjkV>U-ad9L$@Mu$CU;pUQBZgt5QmI@n=W@9K(A(SF-rnxzy|_!5ekKqCQTad`sa|&&Q6jfy}iAEst?|mH*emIjg9SB zRVWlHl?r3bvh2qnf6V6(+>4TulB%kzFveeh{k1?K*t&J=m>dk9P8SjqQdn4sF;*&- z(b3VFnVH$y*$Rb%rs zefJ#z#KpyZ_0?C$jvY%)O?7a?7#}%u1OT>d*)keF*REZ=c=4j6tkr5MilS*cB_$;< zFArmEv)Oby-7}4>TD9uE_ulKT4s6Bp@^Y0*rBEo&o;?cy8#Zi^%jH+DTv4f1SFc_L zfc5LwXJ=;vKt@K!?%liR&!6Almmq$2R@G|tg$oyGnpP+jQBhF<(9qCOR8%AuiBtJCSc zyu1LQw6wIQre^Zw$^E0N)#}R1%J}$rkw`Qc#z0A{)dIkjDN`I(PfyS2=x9f~R4N64 zPe1*1=gytQ#l=RWao4V0bLY-=?Bpl*dQDA@LZMJ9l{Gar$;rvzfB$`Tb#+==T0=ua zSy@?1N{UXWyL9Q&#*G`Zv$GE#JXljxBauj2T3VD!rO9N<%F3#*uP-Sn(P%W=w{Jgx z{(NC!VNOmC0OaN6ZQHg@tJQw^;fGtdZUulVSFX&NGv~~iGoO9-nNq0~2n78w23E{L zmth7T3|W>10ISuSm6cUgRCMXmr5!tV0D!x@`?6)rcI?<8lgZ#IIehqVOiYYpi@x#3 z8xau^+1c4ER;th&( zVHk--A`l3|!os9dsYatANm8TH96x@%qM{-&FmUtc&2qVX-MV%A_U(J~%{TY#*<&ym zX3Ur|c$No?u%e>k#EBDaZEY7XUVLH`0zh|n zw_~XRz;RH!y1MS)zn_X$Km70mNs@ZKo~G$z$BuD09F}FpVzEY}F&d2ug#rLPJUpgPpKh}a^y$-i zJl@%}XHT6vRaaNHckf=MQYn>6Fk&*D<+ja0B z5C{a#&CQN-V`HPyXe3EeAP~gH#>U3RayT5ZSd1}tbaaSNDAZ^)j%n&QHMoE=7KubA zlWEeVNpiV7Dk=&gzM|0Dz(>0HA5Q-_F}_znz(xxqbU~E|+`a#EH|V zPjA|^DJLg~rs?+f_6rv-T)upnAP7fChoq;cFJHcV=gyt)zWXjs(+gZ<%kMDTlOd1+TFW%&z(D`)oKF*0@Bmd zLqkIy?RvewprGK+ojWv5%Ve?@D^>&r1p$CcrMhuv}x1&joiO~|IC>)G) + + +Lua 5.3 readme + + + + + + + +

+Lua +Welcome to Lua 5.3 +

+ +
+about +· +installation +· +changes +· +license +· +reference manual +
+ +

About Lua

+

+Lua is a powerful, fast, lightweight, embeddable scripting language +developed by a +team +at +PUC-Rio, +the Pontifical Catholic University of Rio de Janeiro in Brazil. +Lua is +free software +used in many products and projects around the world. + +

+Lua's +official web site +provides complete information +about Lua, +including +an +executive summary +and +updated +documentation, +especially the +reference manual, +which may differ slightly from the +local copy +distributed in this package. + +

Installing Lua

+

+Lua is distributed in +source +form. +You need to build it before using it. +Building Lua should be straightforward +because +Lua is implemented in pure ANSI C and compiles unmodified in all known +platforms that have an ANSI C compiler. +Lua also compiles unmodified as C++. +The instructions given below for building Lua are for Unix-like platforms. +See also +instructions for other systems +and +customization options. + +

+If you don't have the time or the inclination to compile Lua yourself, +get a binary from +LuaBinaries. +Try also +LuaDist, +a multi-platform distribution of Lua that includes batteries. + +

Building Lua

+

+In most Unix-like platforms, simply do "make" with a suitable target. +Here are the details. + +

    +
  1. +Open a terminal window and move to +the top-level directory, which is named lua-5.3.x. +The Makefile there controls both the build process and the installation process. +

    +

  2. + Do "make" and see if your platform is listed. + The platforms currently supported are: +

    +

    + aix bsd c89 freebsd generic linux macosx mingw posix solaris +

    +

    + If your platform is listed, just do "make xxx", where xxx + is your platform name. +

    + If your platform is not listed, try the closest one or posix, generic, + c89, in this order. +

    +

  3. +The compilation takes only a few moments +and produces three files in the src directory: +lua (the interpreter), +luac (the compiler), +and liblua.a (the library). +

    +

  4. + To check that Lua has been built correctly, do "make test" + after building Lua. This will run the interpreter and print its version. +
+

+If you're running Linux and get compilation errors, +make sure you have installed the readline development package +(which is probably named libreadline-dev or readline-devel). +If you get link errors after that, +then try "make linux MYLIBS=-ltermcap". + +

Installing Lua

+

+ Once you have built Lua, you may want to install it in an official + place in your system. In this case, do "make install". The official + place and the way to install files are defined in the Makefile. You'll + probably need the right permissions to install files. + +

+ To build and install Lua in one step, do "make xxx install", + where xxx is your platform name. + +

+ To install Lua locally, do "make local". + This will create a directory install with subdirectories + bin, include, lib, man, share, + and install Lua as listed below. + + To install Lua locally, but in some other directory, do + "make install INSTALL_TOP=xxx", where xxx is your chosen directory. + The installation starts in the src and doc directories, + so take care if INSTALL_TOP is not an absolute path. + +

+
+ bin: +
+ lua luac +
+ include: +
+ lua.h luaconf.h lualib.h lauxlib.h lua.hpp +
+ lib: +
+ liblua.a +
+ man/man1: +
+ lua.1 luac.1 +
+ +

+ These are the only directories you need for development. + If you only want to run Lua programs, + you only need the files in bin and man. + The files in include and lib are needed for + embedding Lua in C or C++ programs. + +

Customization

+

+ Three kinds of things can be customized by editing a file: +

    +
  • Where and how to install Lua — edit Makefile. +
  • How to build Lua — edit src/Makefile. +
  • Lua features — edit src/luaconf.h. +
+ +

+ You don't actually need to edit the Makefiles because you may set the + relevant variables in the command line when invoking make. + Nevertheless, it's probably best to edit and save the Makefiles to + record the changes you've made. + +

+ On the other hand, if you need to customize some Lua features, you'll need + to edit src/luaconf.h before building and installing Lua. + The edited file will be the one installed, and + it will be used by any Lua clients that you build, to ensure consistency. + Further customization is available to experts by editing the Lua sources. + +

Building Lua on other systems

+

+ If you're not using the usual Unix tools, then the instructions for + building Lua depend on the compiler you use. You'll need to create + projects (or whatever your compiler uses) for building the library, + the interpreter, and the compiler, as follows: + +

+
+library: +
+lapi.c lcode.c lctype.c ldebug.c ldo.c ldump.c lfunc.c lgc.c llex.c +lmem.c lobject.c lopcodes.c lparser.c lstate.c lstring.c ltable.c +ltm.c lundump.c lvm.c lzio.c +lauxlib.c lbaselib.c lbitlib.c lcorolib.c ldblib.c liolib.c +lmathlib.c loslib.c lstrlib.c ltablib.c lutf8lib.c loadlib.c linit.c +
+interpreter: +
+ library, lua.c +
+compiler: +
+ library, luac.c +
+ +

+ To use Lua as a library in your own programs you'll need to know how to + create and use libraries with your compiler. Moreover, to dynamically load + C libraries for Lua you'll need to know how to create dynamic libraries + and you'll need to make sure that the Lua API functions are accessible to + those dynamic libraries — but don't link the Lua library + into each dynamic library. For Unix, we recommend that the Lua library + be linked statically into the host program and its symbols exported for + dynamic linking; src/Makefile does this for the Lua interpreter. + For Windows, we recommend that the Lua library be a DLL. + In all cases, the compiler luac should be linked statically. + +

+ As mentioned above, you may edit src/luaconf.h to customize + some features before building Lua. + +

Changes since Lua 5.2

+

+Here are the main changes introduced in Lua 5.3. +The +reference manual +lists the +incompatibilities that had to be introduced. + +

Main changes

+
    +
  • integers (64-bit by default) +
  • official support for 32-bit numbers +
  • bitwise operators +
  • basic utf-8 support +
  • functions for packing and unpacking values + +
+ +Here are the other changes introduced in Lua 5.3: +

Language

+
    +
  • userdata can have any Lua value as uservalue +
  • floor division +
  • more flexible rules for some metamethods +
+ +

Libraries

+
    +
  • ipairs and the table library respect metamethods +
  • strip option in string.dump +
  • table library respects metamethods +
  • new function table.move +
  • new function string.pack +
  • new function string.unpack +
  • new function string.packsize +
+ +

C API

+
    +
  • simpler API for continuation functions in C +
  • lua_gettable and similar functions return type of resulted value +
  • strip option in lua_dump +
  • new function: lua_geti +
  • new function: lua_seti +
  • new function: lua_isyieldable +
  • new function: lua_numbertointeger +
  • new function: lua_rotate +
  • new function: lua_stringtonumber +
+ +

Lua standalone interpreter

+
    +
  • can be used as calculator; no need to prefix with '=' +
  • arg table available to all code +
+ +

License

+

+ +[osi certified] + +Lua is free software distributed under the terms of the +MIT license +reproduced below; +it may be used for any purpose, including commercial purposes, +at absolutely no cost without having to ask us. + +The only requirement is that if you do use Lua, +then you should give us credit by including the appropriate copyright notice somewhere in your product or its documentation. + +For details, see +this. + +

+Copyright © 1994–2017 Lua.org, PUC-Rio. + +

+Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +

+The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +

+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +

+

+ +

+Last update: +Thu Dec 22 18:22:57 BRST 2016 +

+ + + + diff --git a/deps/rcheevos/test/lua/src/Makefile b/deps/rcheevos/test/lua/src/Makefile new file mode 100644 index 0000000000..d71c75c873 --- /dev/null +++ b/deps/rcheevos/test/lua/src/Makefile @@ -0,0 +1,197 @@ +# Makefile for building Lua +# See ../doc/readme.html for installation and customization instructions. + +# == CHANGE THE SETTINGS BELOW TO SUIT YOUR ENVIRONMENT ======================= + +# Your platform. See PLATS for possible values. +PLAT= none + +CC= gcc -std=gnu99 +CFLAGS= -O2 -Wall -Wextra -DLUA_COMPAT_5_2 $(SYSCFLAGS) $(MYCFLAGS) +LDFLAGS= $(SYSLDFLAGS) $(MYLDFLAGS) +LIBS= -lm $(SYSLIBS) $(MYLIBS) + +AR= ar rcu +RANLIB= ranlib +RM= rm -f + +SYSCFLAGS= +SYSLDFLAGS= +SYSLIBS= + +MYCFLAGS= +MYLDFLAGS= +MYLIBS= +MYOBJS= + +# == END OF USER SETTINGS -- NO NEED TO CHANGE ANYTHING BELOW THIS LINE ======= + +PLATS= aix bsd c89 freebsd generic linux macosx mingw posix solaris + +LUA_A= liblua.a +CORE_O= lapi.o lcode.o lctype.o ldebug.o ldo.o ldump.o lfunc.o lgc.o llex.o \ + lmem.o lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o \ + ltm.o lundump.o lvm.o lzio.o +LIB_O= lauxlib.o lbaselib.o lbitlib.o lcorolib.o ldblib.o liolib.o \ + lmathlib.o loslib.o lstrlib.o ltablib.o lutf8lib.o loadlib.o linit.o +BASE_O= $(CORE_O) $(LIB_O) $(MYOBJS) + +LUA_T= lua +LUA_O= lua.o + +LUAC_T= luac +LUAC_O= luac.o + +ALL_O= $(BASE_O) $(LUA_O) $(LUAC_O) +ALL_T= $(LUA_A) $(LUA_T) $(LUAC_T) +ALL_A= $(LUA_A) + +# Targets start here. +default: $(PLAT) + +all: $(ALL_T) + +o: $(ALL_O) + +a: $(ALL_A) + +$(LUA_A): $(BASE_O) + $(AR) $@ $(BASE_O) + $(RANLIB) $@ + +$(LUA_T): $(LUA_O) $(LUA_A) + $(CC) -o $@ $(LDFLAGS) $(LUA_O) $(LUA_A) $(LIBS) + +$(LUAC_T): $(LUAC_O) $(LUA_A) + $(CC) -o $@ $(LDFLAGS) $(LUAC_O) $(LUA_A) $(LIBS) + +clean: + $(RM) $(ALL_T) $(ALL_O) + +depend: + @$(CC) $(CFLAGS) -MM l*.c + +echo: + @echo "PLAT= $(PLAT)" + @echo "CC= $(CC)" + @echo "CFLAGS= $(CFLAGS)" + @echo "LDFLAGS= $(SYSLDFLAGS)" + @echo "LIBS= $(LIBS)" + @echo "AR= $(AR)" + @echo "RANLIB= $(RANLIB)" + @echo "RM= $(RM)" + +# Convenience targets for popular platforms +ALL= all + +none: + @echo "Please do 'make PLATFORM' where PLATFORM is one of these:" + @echo " $(PLATS)" + +aix: + $(MAKE) $(ALL) CC="xlc" CFLAGS="-O2 -DLUA_USE_POSIX -DLUA_USE_DLOPEN" SYSLIBS="-ldl" SYSLDFLAGS="-brtl -bexpall" + +bsd: + $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN" SYSLIBS="-Wl,-E" + +c89: + $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_C89" CC="gcc -std=c89" + @echo '' + @echo '*** C89 does not guarantee 64-bit integers for Lua.' + @echo '' + + +freebsd: + $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E -lreadline" + +generic: $(ALL) + +linux: + $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E -ldl -lreadline" + +macosx: + $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_MACOSX" SYSLIBS="-lreadline" CC=cc + +mingw: + $(MAKE) "LUA_A=lua53.dll" "LUA_T=lua.exe" \ + "AR=$(CC) -shared -o" "RANLIB=strip --strip-unneeded" \ + "SYSCFLAGS=-DLUA_BUILD_AS_DLL" "SYSLIBS=" "SYSLDFLAGS=-s" lua.exe + $(MAKE) "LUAC_T=luac.exe" luac.exe + +posix: + $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX" + +solaris: + $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN -D_REENTRANT" SYSLIBS="-ldl" + +# list targets that do not create files (but not all makes understand .PHONY) +.PHONY: all $(PLATS) default o a clean depend echo none + +# DO NOT DELETE + +lapi.o: lapi.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \ + lobject.h ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h lstring.h \ + ltable.h lundump.h lvm.h +lauxlib.o: lauxlib.c lprefix.h lua.h luaconf.h lauxlib.h +lbaselib.o: lbaselib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h +lbitlib.o: lbitlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h +lcode.o: lcode.c lprefix.h lua.h luaconf.h lcode.h llex.h lobject.h \ + llimits.h lzio.h lmem.h lopcodes.h lparser.h ldebug.h lstate.h ltm.h \ + ldo.h lgc.h lstring.h ltable.h lvm.h +lcorolib.o: lcorolib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h +lctype.o: lctype.c lprefix.h lctype.h lua.h luaconf.h llimits.h +ldblib.o: ldblib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h +ldebug.o: ldebug.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \ + lobject.h ltm.h lzio.h lmem.h lcode.h llex.h lopcodes.h lparser.h \ + ldebug.h ldo.h lfunc.h lstring.h lgc.h ltable.h lvm.h +ldo.o: ldo.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \ + lobject.h ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h lopcodes.h \ + lparser.h lstring.h ltable.h lundump.h lvm.h +ldump.o: ldump.c lprefix.h lua.h luaconf.h lobject.h llimits.h lstate.h \ + ltm.h lzio.h lmem.h lundump.h +lfunc.o: lfunc.c lprefix.h lua.h luaconf.h lfunc.h lobject.h llimits.h \ + lgc.h lstate.h ltm.h lzio.h lmem.h +lgc.o: lgc.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \ + llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h lstring.h ltable.h +linit.o: linit.c lprefix.h lua.h luaconf.h lualib.h lauxlib.h +liolib.o: liolib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h +llex.o: llex.c lprefix.h lua.h luaconf.h lctype.h llimits.h ldebug.h \ + lstate.h lobject.h ltm.h lzio.h lmem.h ldo.h lgc.h llex.h lparser.h \ + lstring.h ltable.h +lmathlib.o: lmathlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h +lmem.o: lmem.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \ + llimits.h ltm.h lzio.h lmem.h ldo.h lgc.h +loadlib.o: loadlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h +lobject.o: lobject.c lprefix.h lua.h luaconf.h lctype.h llimits.h \ + ldebug.h lstate.h lobject.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h \ + lvm.h +lopcodes.o: lopcodes.c lprefix.h lopcodes.h llimits.h lua.h luaconf.h +loslib.o: loslib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h +lparser.o: lparser.c lprefix.h lua.h luaconf.h lcode.h llex.h lobject.h \ + llimits.h lzio.h lmem.h lopcodes.h lparser.h ldebug.h lstate.h ltm.h \ + ldo.h lfunc.h lstring.h lgc.h ltable.h +lstate.o: lstate.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \ + lobject.h ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h llex.h \ + lstring.h ltable.h +lstring.o: lstring.c lprefix.h lua.h luaconf.h ldebug.h lstate.h \ + lobject.h llimits.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h +lstrlib.o: lstrlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h +ltable.o: ltable.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \ + llimits.h ltm.h lzio.h lmem.h ldo.h lgc.h lstring.h ltable.h lvm.h +ltablib.o: ltablib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h +ltm.o: ltm.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \ + llimits.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h ltable.h lvm.h +lua.o: lua.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h +luac.o: luac.c lprefix.h lua.h luaconf.h lauxlib.h lobject.h llimits.h \ + lstate.h ltm.h lzio.h lmem.h lundump.h ldebug.h lopcodes.h +lundump.o: lundump.c lprefix.h lua.h luaconf.h ldebug.h lstate.h \ + lobject.h llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lstring.h lgc.h \ + lundump.h +lutf8lib.o: lutf8lib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h +lvm.o: lvm.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \ + llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h lopcodes.h lstring.h \ + ltable.h lvm.h +lzio.o: lzio.c lprefix.h lua.h luaconf.h llimits.h lmem.h lstate.h \ + lobject.h ltm.h lzio.h + +# (end of Makefile) diff --git a/deps/rcheevos/test/lua/src/lapi.c b/deps/rcheevos/test/lua/src/lapi.c new file mode 100644 index 0000000000..0097d070b2 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lapi.c @@ -0,0 +1,1298 @@ +/* +** $Id: lapi.c,v 2.259 2016/02/29 14:27:14 roberto Exp $ +** Lua API +** See Copyright Notice in lua.h +*/ + +#define lapi_c +#define LUA_CORE + +#include "lprefix.h" + + +#include +#include + +#include "lua.h" + +#include "lapi.h" +#include "ldebug.h" +#include "ldo.h" +#include "lfunc.h" +#include "lgc.h" +#include "lmem.h" +#include "lobject.h" +#include "lstate.h" +#include "lstring.h" +#include "ltable.h" +#include "ltm.h" +#include "lundump.h" +#include "lvm.h" + + + +const char lua_ident[] = + "$LuaVersion: " LUA_COPYRIGHT " $" + "$LuaAuthors: " LUA_AUTHORS " $"; + + +/* value at a non-valid index */ +#define NONVALIDVALUE cast(TValue *, luaO_nilobject) + +/* corresponding test */ +#define isvalid(o) ((o) != luaO_nilobject) + +/* test for pseudo index */ +#define ispseudo(i) ((i) <= LUA_REGISTRYINDEX) + +/* test for upvalue */ +#define isupvalue(i) ((i) < LUA_REGISTRYINDEX) + +/* test for valid but not pseudo index */ +#define isstackindex(i, o) (isvalid(o) && !ispseudo(i)) + +#define api_checkvalidindex(l,o) api_check(l, isvalid(o), "invalid index") + +#define api_checkstackindex(l, i, o) \ + api_check(l, isstackindex(i, o), "index not in the stack") + + +static TValue *index2addr (lua_State *L, int idx) { + CallInfo *ci = L->ci; + if (idx > 0) { + TValue *o = ci->func + idx; + api_check(L, idx <= ci->top - (ci->func + 1), "unacceptable index"); + if (o >= L->top) return NONVALIDVALUE; + else return o; + } + else if (!ispseudo(idx)) { /* negative index */ + api_check(L, idx != 0 && -idx <= L->top - (ci->func + 1), "invalid index"); + return L->top + idx; + } + else if (idx == LUA_REGISTRYINDEX) + return &G(L)->l_registry; + else { /* upvalues */ + idx = LUA_REGISTRYINDEX - idx; + api_check(L, idx <= MAXUPVAL + 1, "upvalue index too large"); + if (ttislcf(ci->func)) /* light C function? */ + return NONVALIDVALUE; /* it has no upvalues */ + else { + CClosure *func = clCvalue(ci->func); + return (idx <= func->nupvalues) ? &func->upvalue[idx-1] : NONVALIDVALUE; + } + } +} + + +/* +** to be called by 'lua_checkstack' in protected mode, to grow stack +** capturing memory errors +*/ +static void growstack (lua_State *L, void *ud) { + int size = *(int *)ud; + luaD_growstack(L, size); +} + + +LUA_API int lua_checkstack (lua_State *L, int n) { + int res; + CallInfo *ci = L->ci; + lua_lock(L); + api_check(L, n >= 0, "negative 'n'"); + if (L->stack_last - L->top > n) /* stack large enough? */ + res = 1; /* yes; check is OK */ + else { /* no; need to grow stack */ + int inuse = cast_int(L->top - L->stack) + EXTRC_STACK; + if (inuse > LUAI_MAXSTACK - n) /* can grow without overflow? */ + res = 0; /* no */ + else /* try to grow stack */ + res = (luaD_rawrunprotected(L, &growstack, &n) == LUA_OK); + } + if (res && ci->top < L->top + n) + ci->top = L->top + n; /* adjust frame top */ + lua_unlock(L); + return res; +} + + +LUA_API void lua_xmove (lua_State *from, lua_State *to, int n) { + int i; + if (from == to) return; + lua_lock(to); + api_checknelems(from, n); + api_check(from, G(from) == G(to), "moving among independent states"); + api_check(from, to->ci->top - to->top >= n, "stack overflow"); + from->top -= n; + for (i = 0; i < n; i++) { + setobj2s(to, to->top, from->top + i); + to->top++; /* stack already checked by previous 'api_check' */ + } + lua_unlock(to); +} + + +LUA_API lua_CFunction lua_atpanic (lua_State *L, lua_CFunction panicf) { + lua_CFunction old; + lua_lock(L); + old = G(L)->panic; + G(L)->panic = panicf; + lua_unlock(L); + return old; +} + + +LUA_API const lua_Number *lua_version (lua_State *L) { + static const lua_Number version = LUA_VERSION_NUM; + if (L == NULL) return &version; + else return G(L)->version; +} + + + +/* +** basic stack manipulation +*/ + + +/* +** convert an acceptable stack index into an absolute index +*/ +LUA_API int lua_absindex (lua_State *L, int idx) { + return (idx > 0 || ispseudo(idx)) + ? idx + : cast_int(L->top - L->ci->func) + idx; +} + + +LUA_API int lua_gettop (lua_State *L) { + return cast_int(L->top - (L->ci->func + 1)); +} + + +LUA_API void lua_settop (lua_State *L, int idx) { + StkId func = L->ci->func; + lua_lock(L); + if (idx >= 0) { + api_check(L, idx <= L->stack_last - (func + 1), "new top too large"); + while (L->top < (func + 1) + idx) + setnilvalue(L->top++); + L->top = (func + 1) + idx; + } + else { + api_check(L, -(idx+1) <= (L->top - (func + 1)), "invalid new top"); + L->top += idx+1; /* 'subtract' index (index is negative) */ + } + lua_unlock(L); +} + + +/* +** Reverse the stack segment from 'from' to 'to' +** (auxiliary to 'lua_rotate') +*/ +static void reverse (lua_State *L, StkId from, StkId to) { + for (; from < to; from++, to--) { + TValue temp; + setobj(L, &temp, from); + setobjs2s(L, from, to); + setobj2s(L, to, &temp); + } +} + + +/* +** Let x = AB, where A is a prefix of length 'n'. Then, +** rotate x n == BA. But BA == (A^r . B^r)^r. +*/ +LUA_API void lua_rotate (lua_State *L, int idx, int n) { + StkId p, t, m; + lua_lock(L); + t = L->top - 1; /* end of stack segment being rotated */ + p = index2addr(L, idx); /* start of segment */ + api_checkstackindex(L, idx, p); + api_check(L, (n >= 0 ? n : -n) <= (t - p + 1), "invalid 'n'"); + m = (n >= 0 ? t - n : p - n - 1); /* end of prefix */ + reverse(L, p, m); /* reverse the prefix with length 'n' */ + reverse(L, m + 1, t); /* reverse the suffix */ + reverse(L, p, t); /* reverse the entire segment */ + lua_unlock(L); +} + + +LUA_API void lua_copy (lua_State *L, int fromidx, int toidx) { + TValue *fr, *to; + lua_lock(L); + fr = index2addr(L, fromidx); + to = index2addr(L, toidx); + api_checkvalidindex(L, to); + setobj(L, to, fr); + if (isupvalue(toidx)) /* function upvalue? */ + luaC_barrier(L, clCvalue(L->ci->func), fr); + /* LUA_REGISTRYINDEX does not need gc barrier + (collector revisits it before finishing collection) */ + lua_unlock(L); +} + + +LUA_API void lua_pushvalue (lua_State *L, int idx) { + lua_lock(L); + setobj2s(L, L->top, index2addr(L, idx)); + api_incr_top(L); + lua_unlock(L); +} + + + +/* +** access functions (stack -> C) +*/ + + +LUA_API int lua_type (lua_State *L, int idx) { + StkId o = index2addr(L, idx); + return (isvalid(o) ? ttnov(o) : LUA_TNONE); +} + + +LUA_API const char *lua_typename (lua_State *L, int t) { + UNUSED(L); + api_check(L, LUA_TNONE <= t && t < LUA_NUMTAGS, "invalid tag"); + return ttypename(t); +} + + +LUA_API int lua_iscfunction (lua_State *L, int idx) { + StkId o = index2addr(L, idx); + return (ttislcf(o) || (ttisCclosure(o))); +} + + +LUA_API int lua_isinteger (lua_State *L, int idx) { + StkId o = index2addr(L, idx); + return ttisinteger(o); +} + + +LUA_API int lua_isnumber (lua_State *L, int idx) { + lua_Number n; + const TValue *o = index2addr(L, idx); + return tonumber(o, &n); +} + + +LUA_API int lua_isstring (lua_State *L, int idx) { + const TValue *o = index2addr(L, idx); + return (ttisstring(o) || cvt2str(o)); +} + + +LUA_API int lua_isuserdata (lua_State *L, int idx) { + const TValue *o = index2addr(L, idx); + return (ttisfulluserdata(o) || ttislightuserdata(o)); +} + + +LUA_API int lua_rawequal (lua_State *L, int index1, int index2) { + StkId o1 = index2addr(L, index1); + StkId o2 = index2addr(L, index2); + return (isvalid(o1) && isvalid(o2)) ? luaV_rawequalobj(o1, o2) : 0; +} + + +LUA_API void lua_arith (lua_State *L, int op) { + lua_lock(L); + if (op != LUA_OPUNM && op != LUA_OPBNOT) + api_checknelems(L, 2); /* all other operations expect two operands */ + else { /* for unary operations, add fake 2nd operand */ + api_checknelems(L, 1); + setobjs2s(L, L->top, L->top - 1); + api_incr_top(L); + } + /* first operand at top - 2, second at top - 1; result go to top - 2 */ + luaO_arith(L, op, L->top - 2, L->top - 1, L->top - 2); + L->top--; /* remove second operand */ + lua_unlock(L); +} + + +LUA_API int lua_compare (lua_State *L, int index1, int index2, int op) { + StkId o1, o2; + int i = 0; + lua_lock(L); /* may call tag method */ + o1 = index2addr(L, index1); + o2 = index2addr(L, index2); + if (isvalid(o1) && isvalid(o2)) { + switch (op) { + case LUA_OPEQ: i = luaV_equalobj(L, o1, o2); break; + case LUA_OPLT: i = luaV_lessthan(L, o1, o2); break; + case LUA_OPLE: i = luaV_lessequal(L, o1, o2); break; + default: api_check(L, 0, "invalid option"); + } + } + lua_unlock(L); + return i; +} + + +LUA_API size_t lua_stringtonumber (lua_State *L, const char *s) { + size_t sz = luaO_str2num(s, L->top); + if (sz != 0) + api_incr_top(L); + return sz; +} + + +LUA_API lua_Number lua_tonumberx (lua_State *L, int idx, int *pisnum) { + lua_Number n; + const TValue *o = index2addr(L, idx); + int isnum = tonumber(o, &n); + if (!isnum) + n = 0; /* call to 'tonumber' may change 'n' even if it fails */ + if (pisnum) *pisnum = isnum; + return n; +} + + +LUA_API lua_Integer lua_tointegerx (lua_State *L, int idx, int *pisnum) { + lua_Integer res; + const TValue *o = index2addr(L, idx); + int isnum = tointeger(o, &res); + if (!isnum) + res = 0; /* call to 'tointeger' may change 'n' even if it fails */ + if (pisnum) *pisnum = isnum; + return res; +} + + +LUA_API int lua_toboolean (lua_State *L, int idx) { + const TValue *o = index2addr(L, idx); + return !l_isfalse(o); +} + + +LUA_API const char *lua_tolstring (lua_State *L, int idx, size_t *len) { + StkId o = index2addr(L, idx); + if (!ttisstring(o)) { + if (!cvt2str(o)) { /* not convertible? */ + if (len != NULL) *len = 0; + return NULL; + } + lua_lock(L); /* 'luaO_tostring' may create a new string */ + luaO_tostring(L, o); + luaC_checkGC(L); + o = index2addr(L, idx); /* previous call may reallocate the stack */ + lua_unlock(L); + } + if (len != NULL) + *len = vslen(o); + return svalue(o); +} + + +LUA_API size_t lua_rawlen (lua_State *L, int idx) { + StkId o = index2addr(L, idx); + switch (ttype(o)) { + case LUA_TSHRSTR: return tsvalue(o)->shrlen; + case LUA_TLNGSTR: return tsvalue(o)->u.lnglen; + case LUA_TUSERDATA: return uvalue(o)->len; + case LUA_TTABLE: return luaH_getn(hvalue(o)); + default: return 0; + } +} + + +LUA_API lua_CFunction lua_tocfunction (lua_State *L, int idx) { + StkId o = index2addr(L, idx); + if (ttislcf(o)) return fvalue(o); + else if (ttisCclosure(o)) + return clCvalue(o)->f; + else return NULL; /* not a C function */ +} + + +LUA_API void *lua_touserdata (lua_State *L, int idx) { + StkId o = index2addr(L, idx); + switch (ttnov(o)) { + case LUA_TUSERDATA: return getudatamem(uvalue(o)); + case LUA_TLIGHTUSERDATA: return pvalue(o); + default: return NULL; + } +} + + +LUA_API lua_State *lua_tothread (lua_State *L, int idx) { + StkId o = index2addr(L, idx); + return (!ttisthread(o)) ? NULL : thvalue(o); +} + + +LUA_API const void *lua_topointer (lua_State *L, int idx) { + StkId o = index2addr(L, idx); + switch (ttype(o)) { + case LUA_TTABLE: return hvalue(o); + case LUA_TLCL: return clLvalue(o); + case LUA_TCCL: return clCvalue(o); + case LUA_TLCF: return cast(void *, cast(size_t, fvalue(o))); + case LUA_TTHREAD: return thvalue(o); + case LUA_TUSERDATA: return getudatamem(uvalue(o)); + case LUA_TLIGHTUSERDATA: return pvalue(o); + default: return NULL; + } +} + + + +/* +** push functions (C -> stack) +*/ + + +LUA_API void lua_pushnil (lua_State *L) { + lua_lock(L); + setnilvalue(L->top); + api_incr_top(L); + lua_unlock(L); +} + + +LUA_API void lua_pushnumber (lua_State *L, lua_Number n) { + lua_lock(L); + setfltvalue(L->top, n); + api_incr_top(L); + lua_unlock(L); +} + + +LUA_API void lua_pushinteger (lua_State *L, lua_Integer n) { + lua_lock(L); + setivalue(L->top, n); + api_incr_top(L); + lua_unlock(L); +} + + +/* +** Pushes on the stack a string with given length. Avoid using 's' when +** 'len' == 0 (as 's' can be NULL in that case), due to later use of +** 'memcmp' and 'memcpy'. +*/ +LUA_API const char *lua_pushlstring (lua_State *L, const char *s, size_t len) { + TString *ts; + lua_lock(L); + ts = (len == 0) ? luaS_new(L, "") : luaS_newlstr(L, s, len); + setsvalue2s(L, L->top, ts); + api_incr_top(L); + luaC_checkGC(L); + lua_unlock(L); + return getstr(ts); +} + + +LUA_API const char *lua_pushstring (lua_State *L, const char *s) { + lua_lock(L); + if (s == NULL) + setnilvalue(L->top); + else { + TString *ts; + ts = luaS_new(L, s); + setsvalue2s(L, L->top, ts); + s = getstr(ts); /* internal copy's address */ + } + api_incr_top(L); + luaC_checkGC(L); + lua_unlock(L); + return s; +} + + +LUA_API const char *lua_pushvfstring (lua_State *L, const char *fmt, + va_list argp) { + const char *ret; + lua_lock(L); + ret = luaO_pushvfstring(L, fmt, argp); + luaC_checkGC(L); + lua_unlock(L); + return ret; +} + + +LUA_API const char *lua_pushfstring (lua_State *L, const char *fmt, ...) { + const char *ret; + va_list argp; + lua_lock(L); + va_start(argp, fmt); + ret = luaO_pushvfstring(L, fmt, argp); + va_end(argp); + luaC_checkGC(L); + lua_unlock(L); + return ret; +} + + +LUA_API void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n) { + lua_lock(L); + if (n == 0) { + setfvalue(L->top, fn); + } + else { + CClosure *cl; + api_checknelems(L, n); + api_check(L, n <= MAXUPVAL, "upvalue index too large"); + cl = luaF_newCclosure(L, n); + cl->f = fn; + L->top -= n; + while (n--) { + setobj2n(L, &cl->upvalue[n], L->top + n); + /* does not need barrier because closure is white */ + } + setclCvalue(L, L->top, cl); + } + api_incr_top(L); + luaC_checkGC(L); + lua_unlock(L); +} + + +LUA_API void lua_pushboolean (lua_State *L, int b) { + lua_lock(L); + setbvalue(L->top, (b != 0)); /* ensure that true is 1 */ + api_incr_top(L); + lua_unlock(L); +} + + +LUA_API void lua_pushlightuserdata (lua_State *L, void *p) { + lua_lock(L); + setpvalue(L->top, p); + api_incr_top(L); + lua_unlock(L); +} + + +LUA_API int lua_pushthread (lua_State *L) { + lua_lock(L); + setthvalue(L, L->top, L); + api_incr_top(L); + lua_unlock(L); + return (G(L)->mainthread == L); +} + + + +/* +** get functions (Lua -> stack) +*/ + + +static int auxgetstr (lua_State *L, const TValue *t, const char *k) { + const TValue *slot; + TString *str = luaS_new(L, k); + if (luaV_fastget(L, t, str, slot, luaH_getstr)) { + setobj2s(L, L->top, slot); + api_incr_top(L); + } + else { + setsvalue2s(L, L->top, str); + api_incr_top(L); + luaV_finishget(L, t, L->top - 1, L->top - 1, slot); + } + lua_unlock(L); + return ttnov(L->top - 1); +} + + +LUA_API int lua_getglobal (lua_State *L, const char *name) { + Table *reg = hvalue(&G(L)->l_registry); + lua_lock(L); + return auxgetstr(L, luaH_getint(reg, LUA_RIDX_GLOBALS), name); +} + + +LUA_API int lua_gettable (lua_State *L, int idx) { + StkId t; + lua_lock(L); + t = index2addr(L, idx); + luaV_gettable(L, t, L->top - 1, L->top - 1); + lua_unlock(L); + return ttnov(L->top - 1); +} + + +LUA_API int lua_getfield (lua_State *L, int idx, const char *k) { + lua_lock(L); + return auxgetstr(L, index2addr(L, idx), k); +} + + +LUA_API int lua_geti (lua_State *L, int idx, lua_Integer n) { + StkId t; + const TValue *slot; + lua_lock(L); + t = index2addr(L, idx); + if (luaV_fastget(L, t, n, slot, luaH_getint)) { + setobj2s(L, L->top, slot); + api_incr_top(L); + } + else { + setivalue(L->top, n); + api_incr_top(L); + luaV_finishget(L, t, L->top - 1, L->top - 1, slot); + } + lua_unlock(L); + return ttnov(L->top - 1); +} + + +LUA_API int lua_rawget (lua_State *L, int idx) { + StkId t; + lua_lock(L); + t = index2addr(L, idx); + api_check(L, ttistable(t), "table expected"); + setobj2s(L, L->top - 1, luaH_get(hvalue(t), L->top - 1)); + lua_unlock(L); + return ttnov(L->top - 1); +} + + +LUA_API int lua_rawgeti (lua_State *L, int idx, lua_Integer n) { + StkId t; + lua_lock(L); + t = index2addr(L, idx); + api_check(L, ttistable(t), "table expected"); + setobj2s(L, L->top, luaH_getint(hvalue(t), n)); + api_incr_top(L); + lua_unlock(L); + return ttnov(L->top - 1); +} + + +LUA_API int lua_rawgetp (lua_State *L, int idx, const void *p) { + StkId t; + TValue k; + lua_lock(L); + t = index2addr(L, idx); + api_check(L, ttistable(t), "table expected"); + setpvalue(&k, cast(void *, p)); + setobj2s(L, L->top, luaH_get(hvalue(t), &k)); + api_incr_top(L); + lua_unlock(L); + return ttnov(L->top - 1); +} + + +LUA_API void lua_createtable (lua_State *L, int narray, int nrec) { + Table *t; + lua_lock(L); + t = luaH_new(L); + sethvalue(L, L->top, t); + api_incr_top(L); + if (narray > 0 || nrec > 0) + luaH_resize(L, t, narray, nrec); + luaC_checkGC(L); + lua_unlock(L); +} + + +LUA_API int lua_getmetatable (lua_State *L, int objindex) { + const TValue *obj; + Table *mt; + int res = 0; + lua_lock(L); + obj = index2addr(L, objindex); + switch (ttnov(obj)) { + case LUA_TTABLE: + mt = hvalue(obj)->metatable; + break; + case LUA_TUSERDATA: + mt = uvalue(obj)->metatable; + break; + default: + mt = G(L)->mt[ttnov(obj)]; + break; + } + if (mt != NULL) { + sethvalue(L, L->top, mt); + api_incr_top(L); + res = 1; + } + lua_unlock(L); + return res; +} + + +LUA_API int lua_getuservalue (lua_State *L, int idx) { + StkId o; + lua_lock(L); + o = index2addr(L, idx); + api_check(L, ttisfulluserdata(o), "full userdata expected"); + getuservalue(L, uvalue(o), L->top); + api_incr_top(L); + lua_unlock(L); + return ttnov(L->top - 1); +} + + +/* +** set functions (stack -> Lua) +*/ + +/* +** t[k] = value at the top of the stack (where 'k' is a string) +*/ +static void auxsetstr (lua_State *L, const TValue *t, const char *k) { + const TValue *slot; + TString *str = luaS_new(L, k); + api_checknelems(L, 1); + if (luaV_fastset(L, t, str, slot, luaH_getstr, L->top - 1)) + L->top--; /* pop value */ + else { + setsvalue2s(L, L->top, str); /* push 'str' (to make it a TValue) */ + api_incr_top(L); + luaV_finishset(L, t, L->top - 1, L->top - 2, slot); + L->top -= 2; /* pop value and key */ + } + lua_unlock(L); /* lock done by caller */ +} + + +LUA_API void lua_setglobal (lua_State *L, const char *name) { + Table *reg = hvalue(&G(L)->l_registry); + lua_lock(L); /* unlock done in 'auxsetstr' */ + auxsetstr(L, luaH_getint(reg, LUA_RIDX_GLOBALS), name); +} + + +LUA_API void lua_settable (lua_State *L, int idx) { + StkId t; + lua_lock(L); + api_checknelems(L, 2); + t = index2addr(L, idx); + luaV_settable(L, t, L->top - 2, L->top - 1); + L->top -= 2; /* pop index and value */ + lua_unlock(L); +} + + +LUA_API void lua_setfield (lua_State *L, int idx, const char *k) { + lua_lock(L); /* unlock done in 'auxsetstr' */ + auxsetstr(L, index2addr(L, idx), k); +} + + +LUA_API void lua_seti (lua_State *L, int idx, lua_Integer n) { + StkId t; + const TValue *slot; + lua_lock(L); + api_checknelems(L, 1); + t = index2addr(L, idx); + if (luaV_fastset(L, t, n, slot, luaH_getint, L->top - 1)) + L->top--; /* pop value */ + else { + setivalue(L->top, n); + api_incr_top(L); + luaV_finishset(L, t, L->top - 1, L->top - 2, slot); + L->top -= 2; /* pop value and key */ + } + lua_unlock(L); +} + + +LUA_API void lua_rawset (lua_State *L, int idx) { + StkId o; + TValue *slot; + lua_lock(L); + api_checknelems(L, 2); + o = index2addr(L, idx); + api_check(L, ttistable(o), "table expected"); + slot = luaH_set(L, hvalue(o), L->top - 2); + setobj2t(L, slot, L->top - 1); + invalidateTMcache(hvalue(o)); + luaC_barrierback(L, hvalue(o), L->top-1); + L->top -= 2; + lua_unlock(L); +} + + +LUA_API void lua_rawseti (lua_State *L, int idx, lua_Integer n) { + StkId o; + lua_lock(L); + api_checknelems(L, 1); + o = index2addr(L, idx); + api_check(L, ttistable(o), "table expected"); + luaH_setint(L, hvalue(o), n, L->top - 1); + luaC_barrierback(L, hvalue(o), L->top-1); + L->top--; + lua_unlock(L); +} + + +LUA_API void lua_rawsetp (lua_State *L, int idx, const void *p) { + StkId o; + TValue k, *slot; + lua_lock(L); + api_checknelems(L, 1); + o = index2addr(L, idx); + api_check(L, ttistable(o), "table expected"); + setpvalue(&k, cast(void *, p)); + slot = luaH_set(L, hvalue(o), &k); + setobj2t(L, slot, L->top - 1); + luaC_barrierback(L, hvalue(o), L->top - 1); + L->top--; + lua_unlock(L); +} + + +LUA_API int lua_setmetatable (lua_State *L, int objindex) { + TValue *obj; + Table *mt; + lua_lock(L); + api_checknelems(L, 1); + obj = index2addr(L, objindex); + if (ttisnil(L->top - 1)) + mt = NULL; + else { + api_check(L, ttistable(L->top - 1), "table expected"); + mt = hvalue(L->top - 1); + } + switch (ttnov(obj)) { + case LUA_TTABLE: { + hvalue(obj)->metatable = mt; + if (mt) { + luaC_objbarrier(L, gcvalue(obj), mt); + luaC_checkfinalizer(L, gcvalue(obj), mt); + } + break; + } + case LUA_TUSERDATA: { + uvalue(obj)->metatable = mt; + if (mt) { + luaC_objbarrier(L, uvalue(obj), mt); + luaC_checkfinalizer(L, gcvalue(obj), mt); + } + break; + } + default: { + G(L)->mt[ttnov(obj)] = mt; + break; + } + } + L->top--; + lua_unlock(L); + return 1; +} + + +LUA_API void lua_setuservalue (lua_State *L, int idx) { + StkId o; + lua_lock(L); + api_checknelems(L, 1); + o = index2addr(L, idx); + api_check(L, ttisfulluserdata(o), "full userdata expected"); + setuservalue(L, uvalue(o), L->top - 1); + luaC_barrier(L, gcvalue(o), L->top - 1); + L->top--; + lua_unlock(L); +} + + +/* +** 'load' and 'call' functions (run Lua code) +*/ + + +#define checkresults(L,na,nr) \ + api_check(L, (nr) == LUA_MULTRET || (L->ci->top - L->top >= (nr) - (na)), \ + "results from function overflow current stack size") + + +LUA_API void lua_callk (lua_State *L, int nargs, int nresults, + lua_KContext ctx, lua_KFunction k) { + StkId func; + lua_lock(L); + api_check(L, k == NULL || !isLua(L->ci), + "cannot use continuations inside hooks"); + api_checknelems(L, nargs+1); + api_check(L, L->status == LUA_OK, "cannot do calls on non-normal thread"); + checkresults(L, nargs, nresults); + func = L->top - (nargs+1); + if (k != NULL && L->nny == 0) { /* need to prepare continuation? */ + L->ci->u.c.k = k; /* save continuation */ + L->ci->u.c.ctx = ctx; /* save context */ + luaD_call(L, func, nresults); /* do the call */ + } + else /* no continuation or no yieldable */ + luaD_callnoyield(L, func, nresults); /* just do the call */ + adjustresults(L, nresults); + lua_unlock(L); +} + + + +/* +** Execute a protected call. +*/ +struct CallS { /* data to 'f_call' */ + StkId func; + int nresults; +}; + + +static void f_call (lua_State *L, void *ud) { + struct CallS *c = cast(struct CallS *, ud); + luaD_callnoyield(L, c->func, c->nresults); +} + + + +LUA_API int lua_pcallk (lua_State *L, int nargs, int nresults, int errfunc, + lua_KContext ctx, lua_KFunction k) { + struct CallS c; + int status; + ptrdiff_t func; + lua_lock(L); + api_check(L, k == NULL || !isLua(L->ci), + "cannot use continuations inside hooks"); + api_checknelems(L, nargs+1); + api_check(L, L->status == LUA_OK, "cannot do calls on non-normal thread"); + checkresults(L, nargs, nresults); + if (errfunc == 0) + func = 0; + else { + StkId o = index2addr(L, errfunc); + api_checkstackindex(L, errfunc, o); + func = savestack(L, o); + } + c.func = L->top - (nargs+1); /* function to be called */ + if (k == NULL || L->nny > 0) { /* no continuation or no yieldable? */ + c.nresults = nresults; /* do a 'conventional' protected call */ + status = luaD_pcall(L, f_call, &c, savestack(L, c.func), func); + } + else { /* prepare continuation (call is already protected by 'resume') */ + CallInfo *ci = L->ci; + ci->u.c.k = k; /* save continuation */ + ci->u.c.ctx = ctx; /* save context */ + /* save information for error recovery */ + ci->extra = savestack(L, c.func); + ci->u.c.old_errfunc = L->errfunc; + L->errfunc = func; + setoah(ci->callstatus, L->allowhook); /* save value of 'allowhook' */ + ci->callstatus |= CIST_YPCALL; /* function can do error recovery */ + luaD_call(L, c.func, nresults); /* do the call */ + ci->callstatus &= ~CIST_YPCALL; + L->errfunc = ci->u.c.old_errfunc; + status = LUA_OK; /* if it is here, there were no errors */ + } + adjustresults(L, nresults); + lua_unlock(L); + return status; +} + + +LUA_API int lua_load (lua_State *L, lua_Reader reader, void *data, + const char *chunkname, const char *mode) { + ZIO z; + int status; + lua_lock(L); + if (!chunkname) chunkname = "?"; + luaZ_init(L, &z, reader, data); + status = luaD_protectedparser(L, &z, chunkname, mode); + if (status == LUA_OK) { /* no errors? */ + LClosure *f = clLvalue(L->top - 1); /* get newly created function */ + if (f->nupvalues >= 1) { /* does it have an upvalue? */ + /* get global table from registry */ + Table *reg = hvalue(&G(L)->l_registry); + const TValue *gt = luaH_getint(reg, LUA_RIDX_GLOBALS); + /* set global table as 1st upvalue of 'f' (may be LUA_ENV) */ + setobj(L, f->upvals[0]->v, gt); + luaC_upvalbarrier(L, f->upvals[0]); + } + } + lua_unlock(L); + return status; +} + + +LUA_API int lua_dump (lua_State *L, lua_Writer writer, void *data, int strip) { + int status; + TValue *o; + lua_lock(L); + api_checknelems(L, 1); + o = L->top - 1; + if (isLfunction(o)) + status = luaU_dump(L, getproto(o), writer, data, strip); + else + status = 1; + lua_unlock(L); + return status; +} + + +LUA_API int lua_status (lua_State *L) { + return L->status; +} + + +/* +** Garbage-collection function +*/ + +LUA_API int lua_gc (lua_State *L, int what, int data) { + int res = 0; + global_State *g; + lua_lock(L); + g = G(L); + switch (what) { + case LUA_GCSTOP: { + g->gcrunning = 0; + break; + } + case LUA_GCRESTART: { + luaE_setdebt(g, 0); + g->gcrunning = 1; + break; + } + case LUA_GCCOLLECT: { + luaC_fullgc(L, 0); + break; + } + case LUA_GCCOUNT: { + /* GC values are expressed in Kbytes: #bytes/2^10 */ + res = cast_int(gettotalbytes(g) >> 10); + break; + } + case LUA_GCCOUNTB: { + res = cast_int(gettotalbytes(g) & 0x3ff); + break; + } + case LUA_GCSTEP: { + l_mem debt = 1; /* =1 to signal that it did an actual step */ + lu_byte oldrunning = g->gcrunning; + g->gcrunning = 1; /* allow GC to run */ + if (data == 0) { + luaE_setdebt(g, -GCSTEPSIZE); /* to do a "small" step */ + luaC_step(L); + } + else { /* add 'data' to total debt */ + debt = cast(l_mem, data) * 1024 + g->GCdebt; + luaE_setdebt(g, debt); + luaC_checkGC(L); + } + g->gcrunning = oldrunning; /* restore previous state */ + if (debt > 0 && g->gcstate == GCSpause) /* end of cycle? */ + res = 1; /* signal it */ + break; + } + case LUA_GCSETPAUSE: { + res = g->gcpause; + g->gcpause = data; + break; + } + case LUA_GCSETSTEPMUL: { + res = g->gcstepmul; + if (data < 40) data = 40; /* avoid ridiculous low values (and 0) */ + g->gcstepmul = data; + break; + } + case LUA_GCISRUNNING: { + res = g->gcrunning; + break; + } + default: res = -1; /* invalid option */ + } + lua_unlock(L); + return res; +} + + + +/* +** miscellaneous functions +*/ + + +LUA_API int lua_error (lua_State *L) { + lua_lock(L); + api_checknelems(L, 1); + luaG_errormsg(L); + /* code unreachable; will unlock when control actually leaves the kernel */ + return 0; /* to avoid warnings */ +} + + +LUA_API int lua_next (lua_State *L, int idx) { + StkId t; + int more; + lua_lock(L); + t = index2addr(L, idx); + api_check(L, ttistable(t), "table expected"); + more = luaH_next(L, hvalue(t), L->top - 1); + if (more) { + api_incr_top(L); + } + else /* no more elements */ + L->top -= 1; /* remove key */ + lua_unlock(L); + return more; +} + + +LUA_API void lua_concat (lua_State *L, int n) { + lua_lock(L); + api_checknelems(L, n); + if (n >= 2) { + luaV_concat(L, n); + } + else if (n == 0) { /* push empty string */ + setsvalue2s(L, L->top, luaS_newlstr(L, "", 0)); + api_incr_top(L); + } + /* else n == 1; nothing to do */ + luaC_checkGC(L); + lua_unlock(L); +} + + +LUA_API void lua_len (lua_State *L, int idx) { + StkId t; + lua_lock(L); + t = index2addr(L, idx); + luaV_objlen(L, L->top, t); + api_incr_top(L); + lua_unlock(L); +} + + +LUA_API lua_Alloc lua_getallocf (lua_State *L, void **ud) { + lua_Alloc f; + lua_lock(L); + if (ud) *ud = G(L)->ud; + f = G(L)->frealloc; + lua_unlock(L); + return f; +} + + +LUA_API void lua_setallocf (lua_State *L, lua_Alloc f, void *ud) { + lua_lock(L); + G(L)->ud = ud; + G(L)->frealloc = f; + lua_unlock(L); +} + + +LUA_API void *lua_newuserdata (lua_State *L, size_t size) { + Udata *u; + lua_lock(L); + u = luaS_newudata(L, size); + setuvalue(L, L->top, u); + api_incr_top(L); + luaC_checkGC(L); + lua_unlock(L); + return getudatamem(u); +} + + + +static const char *aux_upvalue (StkId fi, int n, TValue **val, + CClosure **owner, UpVal **uv) { + switch (ttype(fi)) { + case LUA_TCCL: { /* C closure */ + CClosure *f = clCvalue(fi); + if (!(1 <= n && n <= f->nupvalues)) return NULL; + *val = &f->upvalue[n-1]; + if (owner) *owner = f; + return ""; + } + case LUA_TLCL: { /* Lua closure */ + LClosure *f = clLvalue(fi); + TString *name; + Proto *p = f->p; + if (!(1 <= n && n <= p->sizeupvalues)) return NULL; + *val = f->upvals[n-1]->v; + if (uv) *uv = f->upvals[n - 1]; + name = p->upvalues[n-1].name; + return (name == NULL) ? "(*no name)" : getstr(name); + } + default: return NULL; /* not a closure */ + } +} + + +LUA_API const char *lua_getupvalue (lua_State *L, int funcindex, int n) { + const char *name; + TValue *val = NULL; /* to avoid warnings */ + lua_lock(L); + name = aux_upvalue(index2addr(L, funcindex), n, &val, NULL, NULL); + if (name) { + setobj2s(L, L->top, val); + api_incr_top(L); + } + lua_unlock(L); + return name; +} + + +LUA_API const char *lua_setupvalue (lua_State *L, int funcindex, int n) { + const char *name; + TValue *val = NULL; /* to avoid warnings */ + CClosure *owner = NULL; + UpVal *uv = NULL; + StkId fi; + lua_lock(L); + fi = index2addr(L, funcindex); + api_checknelems(L, 1); + name = aux_upvalue(fi, n, &val, &owner, &uv); + if (name) { + L->top--; + setobj(L, val, L->top); + if (owner) { luaC_barrier(L, owner, L->top); } + else if (uv) { luaC_upvalbarrier(L, uv); } + } + lua_unlock(L); + return name; +} + + +static UpVal **getupvalref (lua_State *L, int fidx, int n, LClosure **pf) { + LClosure *f; + StkId fi = index2addr(L, fidx); + api_check(L, ttisLclosure(fi), "Lua function expected"); + f = clLvalue(fi); + api_check(L, (1 <= n && n <= f->p->sizeupvalues), "invalid upvalue index"); + if (pf) *pf = f; + return &f->upvals[n - 1]; /* get its upvalue pointer */ +} + + +LUA_API void *lua_upvalueid (lua_State *L, int fidx, int n) { + StkId fi = index2addr(L, fidx); + switch (ttype(fi)) { + case LUA_TLCL: { /* lua closure */ + return *getupvalref(L, fidx, n, NULL); + } + case LUA_TCCL: { /* C closure */ + CClosure *f = clCvalue(fi); + api_check(L, 1 <= n && n <= f->nupvalues, "invalid upvalue index"); + return &f->upvalue[n - 1]; + } + default: { + api_check(L, 0, "closure expected"); + return NULL; + } + } +} + + +LUA_API void lua_upvaluejoin (lua_State *L, int fidx1, int n1, + int fidx2, int n2) { + LClosure *f1; + UpVal **up1 = getupvalref(L, fidx1, n1, &f1); + UpVal **up2 = getupvalref(L, fidx2, n2, NULL); + luaC_upvdeccount(L, *up1); + *up1 = *up2; + (*up1)->refcount++; + if (upisopen(*up1)) (*up1)->u.open.touched = 1; + luaC_upvalbarrier(L, *up1); +} + + diff --git a/deps/rcheevos/test/lua/src/lapi.h b/deps/rcheevos/test/lua/src/lapi.h new file mode 100644 index 0000000000..6d36dee3fb --- /dev/null +++ b/deps/rcheevos/test/lua/src/lapi.h @@ -0,0 +1,24 @@ +/* +** $Id: lapi.h,v 2.9 2015/03/06 19:49:50 roberto Exp $ +** Auxiliary functions from Lua API +** See Copyright Notice in lua.h +*/ + +#ifndef lapi_h +#define lapi_h + + +#include "llimits.h" +#include "lstate.h" + +#define api_incr_top(L) {L->top++; api_check(L, L->top <= L->ci->top, \ + "stack overflow");} + +#define adjustresults(L,nres) \ + { if ((nres) == LUA_MULTRET && L->ci->top < L->top) L->ci->top = L->top; } + +#define api_checknelems(L,n) api_check(L, (n) < (L->top - L->ci->func), \ + "not enough elements in the stack") + + +#endif diff --git a/deps/rcheevos/test/lua/src/lauxlib.c b/deps/rcheevos/test/lua/src/lauxlib.c new file mode 100644 index 0000000000..f7a383663e --- /dev/null +++ b/deps/rcheevos/test/lua/src/lauxlib.c @@ -0,0 +1,1043 @@ +/* +** $Id: lauxlib.c,v 1.289 2016/12/20 18:37:00 roberto Exp $ +** Auxiliary functions for building Lua libraries +** See Copyright Notice in lua.h +*/ + +#define lauxlib_c +#define LUA_LIB + +#include "lprefix.h" + + +#include +#include +#include +#include +#include + + +/* +** This file uses only the official API of Lua. +** Any function declared here could be written as an application function. +*/ + +#include "lua.h" + +#include "lauxlib.h" + + +/* +** {====================================================== +** Traceback +** ======================================================= +*/ + + +#define LEVELS1 10 /* size of the first part of the stack */ +#define LEVELS2 11 /* size of the second part of the stack */ + + + +/* +** search for 'objidx' in table at index -1. +** return 1 + string at top if find a good name. +*/ +static int findfield (lua_State *L, int objidx, int level) { + if (level == 0 || !lua_istable(L, -1)) + return 0; /* not found */ + lua_pushnil(L); /* start 'next' loop */ + while (lua_next(L, -2)) { /* for each pair in table */ + if (lua_type(L, -2) == LUA_TSTRING) { /* ignore non-string keys */ + if (lua_rawequal(L, objidx, -1)) { /* found object? */ + lua_pop(L, 1); /* remove value (but keep name) */ + return 1; + } + else if (findfield(L, objidx, level - 1)) { /* try recursively */ + lua_remove(L, -2); /* remove table (but keep name) */ + lua_pushliteral(L, "."); + lua_insert(L, -2); /* place '.' between the two names */ + lua_concat(L, 3); + return 1; + } + } + lua_pop(L, 1); /* remove value */ + } + return 0; /* not found */ +} + + +/* +** Search for a name for a function in all loaded modules +*/ +static int pushglobalfuncname (lua_State *L, lua_Debug *ar) { + int top = lua_gettop(L); + lua_getinfo(L, "f", ar); /* push function */ + lua_getfield(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE); + if (findfield(L, top + 1, 2)) { + const char *name = lua_tostring(L, -1); + if (strncmp(name, "_G.", 3) == 0) { /* name start with '_G.'? */ + lua_pushstring(L, name + 3); /* push name without prefix */ + lua_remove(L, -2); /* remove original name */ + } + lua_copy(L, -1, top + 1); /* move name to proper place */ + lua_pop(L, 2); /* remove pushed values */ + return 1; + } + else { + lua_settop(L, top); /* remove function and global table */ + return 0; + } +} + + +static void pushfuncname (lua_State *L, lua_Debug *ar) { + if (pushglobalfuncname(L, ar)) { /* try first a global name */ + lua_pushfstring(L, "function '%s'", lua_tostring(L, -1)); + lua_remove(L, -2); /* remove name */ + } + else if (*ar->namewhat != '\0') /* is there a name from code? */ + lua_pushfstring(L, "%s '%s'", ar->namewhat, ar->name); /* use it */ + else if (*ar->what == 'm') /* main? */ + lua_pushliteral(L, "main chunk"); + else if (*ar->what != 'C') /* for Lua functions, use */ + lua_pushfstring(L, "function <%s:%d>", ar->short_src, ar->linedefined); + else /* nothing left... */ + lua_pushliteral(L, "?"); +} + + +static int lastlevel (lua_State *L) { + lua_Debug ar; + int li = 1, le = 1; + /* find an upper bound */ + while (lua_getstack(L, le, &ar)) { li = le; le *= 2; } + /* do a binary search */ + while (li < le) { + int m = (li + le)/2; + if (lua_getstack(L, m, &ar)) li = m + 1; + else le = m; + } + return le - 1; +} + + +LUALIB_API void luaL_traceback (lua_State *L, lua_State *L1, + const char *msg, int level) { + lua_Debug ar; + int top = lua_gettop(L); + int last = lastlevel(L1); + int n1 = (last - level > LEVELS1 + LEVELS2) ? LEVELS1 : -1; + if (msg) + lua_pushfstring(L, "%s\n", msg); + luaL_checkstack(L, 10, NULL); + lua_pushliteral(L, "stack traceback:"); + while (lua_getstack(L1, level++, &ar)) { + if (n1-- == 0) { /* too many levels? */ + lua_pushliteral(L, "\n\t..."); /* add a '...' */ + level = last - LEVELS2 + 1; /* and skip to last ones */ + } + else { + lua_getinfo(L1, "Slnt", &ar); + lua_pushfstring(L, "\n\t%s:", ar.short_src); + if (ar.currentline > 0) + lua_pushfstring(L, "%d:", ar.currentline); + lua_pushliteral(L, " in "); + pushfuncname(L, &ar); + if (ar.istailcall) + lua_pushliteral(L, "\n\t(...tail calls...)"); + lua_concat(L, lua_gettop(L) - top); + } + } + lua_concat(L, lua_gettop(L) - top); +} + +/* }====================================================== */ + + +/* +** {====================================================== +** Error-report functions +** ======================================================= +*/ + +LUALIB_API int luaL_argerror (lua_State *L, int arg, const char *extramsg) { + lua_Debug ar; + if (!lua_getstack(L, 0, &ar)) /* no stack frame? */ + return luaL_error(L, "bad argument #%d (%s)", arg, extramsg); + lua_getinfo(L, "n", &ar); + if (strcmp(ar.namewhat, "method") == 0) { + arg--; /* do not count 'self' */ + if (arg == 0) /* error is in the self argument itself? */ + return luaL_error(L, "calling '%s' on bad self (%s)", + ar.name, extramsg); + } + if (ar.name == NULL) + ar.name = (pushglobalfuncname(L, &ar)) ? lua_tostring(L, -1) : "?"; + return luaL_error(L, "bad argument #%d to '%s' (%s)", + arg, ar.name, extramsg); +} + + +static int typeerror (lua_State *L, int arg, const char *tname) { + const char *msg; + const char *typearg; /* name for the type of the actual argument */ + if (luaL_getmetafield(L, arg, "__name") == LUA_TSTRING) + typearg = lua_tostring(L, -1); /* use the given type name */ + else if (lua_type(L, arg) == LUA_TLIGHTUSERDATA) + typearg = "light userdata"; /* special name for messages */ + else + typearg = luaL_typename(L, arg); /* standard name */ + msg = lua_pushfstring(L, "%s expected, got %s", tname, typearg); + return luaL_argerror(L, arg, msg); +} + + +static void tag_error (lua_State *L, int arg, int tag) { + typeerror(L, arg, lua_typename(L, tag)); +} + + +/* +** The use of 'lua_pushfstring' ensures this function does not +** need reserved stack space when called. +*/ +LUALIB_API void luaL_where (lua_State *L, int level) { + lua_Debug ar; + if (lua_getstack(L, level, &ar)) { /* check function at level */ + lua_getinfo(L, "Sl", &ar); /* get info about it */ + if (ar.currentline > 0) { /* is there info? */ + lua_pushfstring(L, "%s:%d: ", ar.short_src, ar.currentline); + return; + } + } + lua_pushfstring(L, ""); /* else, no information available... */ +} + + +/* +** Again, the use of 'lua_pushvfstring' ensures this function does +** not need reserved stack space when called. (At worst, it generates +** an error with "stack overflow" instead of the given message.) +*/ +LUALIB_API int luaL_error (lua_State *L, const char *fmt, ...) { + va_list argp; + va_start(argp, fmt); + luaL_where(L, 1); + lua_pushvfstring(L, fmt, argp); + va_end(argp); + lua_concat(L, 2); + return lua_error(L); +} + + +LUALIB_API int luaL_fileresult (lua_State *L, int stat, const char *fname) { + int en = errno; /* calls to Lua API may change this value */ + if (stat) { + lua_pushboolean(L, 1); + return 1; + } + else { + lua_pushnil(L); + if (fname) + lua_pushfstring(L, "%s: %s", fname, strerror(en)); + else + lua_pushstring(L, strerror(en)); + lua_pushinteger(L, en); + return 3; + } +} + + +#if !defined(l_inspectstat) /* { */ + +#if defined(LUA_USE_POSIX) + +#include + +/* +** use appropriate macros to interpret 'pclose' return status +*/ +#define l_inspectstat(stat,what) \ + if (WIFEXITED(stat)) { stat = WEXITSTATUS(stat); } \ + else if (WIFSIGNALED(stat)) { stat = WTERMSIG(stat); what = "signal"; } + +#else + +#define l_inspectstat(stat,what) /* no op */ + +#endif + +#endif /* } */ + + +LUALIB_API int luaL_execresult (lua_State *L, int stat) { + const char *what = "exit"; /* type of termination */ + if (stat == -1) /* error? */ + return luaL_fileresult(L, 0, NULL); + else { + l_inspectstat(stat, what); /* interpret result */ + if (*what == 'e' && stat == 0) /* successful termination? */ + lua_pushboolean(L, 1); + else + lua_pushnil(L); + lua_pushstring(L, what); + lua_pushinteger(L, stat); + return 3; /* return true/nil,what,code */ + } +} + +/* }====================================================== */ + + +/* +** {====================================================== +** Userdata's metatable manipulation +** ======================================================= +*/ + +LUALIB_API int luaL_newmetatable (lua_State *L, const char *tname) { + if (luaL_getmetatable(L, tname) != LUA_TNIL) /* name already in use? */ + return 0; /* leave previous value on top, but return 0 */ + lua_pop(L, 1); + lua_createtable(L, 0, 2); /* create metatable */ + lua_pushstring(L, tname); + lua_setfield(L, -2, "__name"); /* metatable.__name = tname */ + lua_pushvalue(L, -1); + lua_setfield(L, LUA_REGISTRYINDEX, tname); /* registry.name = metatable */ + return 1; +} + + +LUALIB_API void luaL_setmetatable (lua_State *L, const char *tname) { + luaL_getmetatable(L, tname); + lua_setmetatable(L, -2); +} + + +LUALIB_API void *luaL_testudata (lua_State *L, int ud, const char *tname) { + void *p = lua_touserdata(L, ud); + if (p != NULL) { /* value is a userdata? */ + if (lua_getmetatable(L, ud)) { /* does it have a metatable? */ + luaL_getmetatable(L, tname); /* get correct metatable */ + if (!lua_rawequal(L, -1, -2)) /* not the same? */ + p = NULL; /* value is a userdata with wrong metatable */ + lua_pop(L, 2); /* remove both metatables */ + return p; + } + } + return NULL; /* value is not a userdata with a metatable */ +} + + +LUALIB_API void *luaL_checkudata (lua_State *L, int ud, const char *tname) { + void *p = luaL_testudata(L, ud, tname); + if (p == NULL) typeerror(L, ud, tname); + return p; +} + +/* }====================================================== */ + + +/* +** {====================================================== +** Argument check functions +** ======================================================= +*/ + +LUALIB_API int luaL_checkoption (lua_State *L, int arg, const char *def, + const char *const lst[]) { + const char *name = (def) ? luaL_optstring(L, arg, def) : + luaL_checkstring(L, arg); + int i; + for (i=0; lst[i]; i++) + if (strcmp(lst[i], name) == 0) + return i; + return luaL_argerror(L, arg, + lua_pushfstring(L, "invalid option '%s'", name)); +} + + +/* +** Ensures the stack has at least 'space' extra slots, raising an error +** if it cannot fulfill the request. (The error handling needs a few +** extra slots to format the error message. In case of an error without +** this extra space, Lua will generate the same 'stack overflow' error, +** but without 'msg'.) +*/ +LUALIB_API void luaL_checkstack (lua_State *L, int space, const char *msg) { + if (!lua_checkstack(L, space)) { + if (msg) + luaL_error(L, "stack overflow (%s)", msg); + else + luaL_error(L, "stack overflow"); + } +} + + +LUALIB_API void luaL_checktype (lua_State *L, int arg, int t) { + if (lua_type(L, arg) != t) + tag_error(L, arg, t); +} + + +LUALIB_API void luaL_checkany (lua_State *L, int arg) { + if (lua_type(L, arg) == LUA_TNONE) + luaL_argerror(L, arg, "value expected"); +} + + +LUALIB_API const char *luaL_checklstring (lua_State *L, int arg, size_t *len) { + const char *s = lua_tolstring(L, arg, len); + if (!s) tag_error(L, arg, LUA_TSTRING); + return s; +} + + +LUALIB_API const char *luaL_optlstring (lua_State *L, int arg, + const char *def, size_t *len) { + if (lua_isnoneornil(L, arg)) { + if (len) + *len = (def ? strlen(def) : 0); + return def; + } + else return luaL_checklstring(L, arg, len); +} + + +LUALIB_API lua_Number luaL_checknumber (lua_State *L, int arg) { + int isnum; + lua_Number d = lua_tonumberx(L, arg, &isnum); + if (!isnum) + tag_error(L, arg, LUA_TNUMBER); + return d; +} + + +LUALIB_API lua_Number luaL_optnumber (lua_State *L, int arg, lua_Number def) { + return luaL_opt(L, luaL_checknumber, arg, def); +} + + +static void interror (lua_State *L, int arg) { + if (lua_isnumber(L, arg)) + luaL_argerror(L, arg, "number has no integer representation"); + else + tag_error(L, arg, LUA_TNUMBER); +} + + +LUALIB_API lua_Integer luaL_checkinteger (lua_State *L, int arg) { + int isnum; + lua_Integer d = lua_tointegerx(L, arg, &isnum); + if (!isnum) { + interror(L, arg); + } + return d; +} + + +LUALIB_API lua_Integer luaL_optinteger (lua_State *L, int arg, + lua_Integer def) { + return luaL_opt(L, luaL_checkinteger, arg, def); +} + +/* }====================================================== */ + + +/* +** {====================================================== +** Generic Buffer manipulation +** ======================================================= +*/ + +/* userdata to box arbitrary data */ +typedef struct UBox { + void *box; + size_t bsize; +} UBox; + + +static void *resizebox (lua_State *L, int idx, size_t newsize) { + void *ud; + lua_Alloc allocf = lua_getallocf(L, &ud); + UBox *box = (UBox *)lua_touserdata(L, idx); + void *temp = allocf(ud, box->box, box->bsize, newsize); + if (temp == NULL && newsize > 0) { /* allocation error? */ + resizebox(L, idx, 0); /* free buffer */ + luaL_error(L, "not enough memory for buffer allocation"); + } + box->box = temp; + box->bsize = newsize; + return temp; +} + + +static int boxgc (lua_State *L) { + resizebox(L, 1, 0); + return 0; +} + + +static void *newbox (lua_State *L, size_t newsize) { + UBox *box = (UBox *)lua_newuserdata(L, sizeof(UBox)); + box->box = NULL; + box->bsize = 0; + if (luaL_newmetatable(L, "LUABOX")) { /* creating metatable? */ + lua_pushcfunction(L, boxgc); + lua_setfield(L, -2, "__gc"); /* metatable.__gc = boxgc */ + } + lua_setmetatable(L, -2); + return resizebox(L, -1, newsize); +} + + +/* +** check whether buffer is using a userdata on the stack as a temporary +** buffer +*/ +#define buffonstack(B) ((B)->b != (B)->initb) + + +/* +** returns a pointer to a free area with at least 'sz' bytes +*/ +LUALIB_API char *luaL_prepbuffsize (luaL_Buffer *B, size_t sz) { + lua_State *L = B->L; + if (B->size - B->n < sz) { /* not enough space? */ + char *newbuff; + size_t newsize = B->size * 2; /* double buffer size */ + if (newsize - B->n < sz) /* not big enough? */ + newsize = B->n + sz; + if (newsize < B->n || newsize - B->n < sz) + luaL_error(L, "buffer too large"); + /* create larger buffer */ + if (buffonstack(B)) + newbuff = (char *)resizebox(L, -1, newsize); + else { /* no buffer yet */ + newbuff = (char *)newbox(L, newsize); + memcpy(newbuff, B->b, B->n * sizeof(char)); /* copy original content */ + } + B->b = newbuff; + B->size = newsize; + } + return &B->b[B->n]; +} + + +LUALIB_API void luaL_addlstring (luaL_Buffer *B, const char *s, size_t l) { + if (l > 0) { /* avoid 'memcpy' when 's' can be NULL */ + char *b = luaL_prepbuffsize(B, l); + memcpy(b, s, l * sizeof(char)); + luaL_addsize(B, l); + } +} + + +LUALIB_API void luaL_addstring (luaL_Buffer *B, const char *s) { + luaL_addlstring(B, s, strlen(s)); +} + + +LUALIB_API void luaL_pushresult (luaL_Buffer *B) { + lua_State *L = B->L; + lua_pushlstring(L, B->b, B->n); + if (buffonstack(B)) { + resizebox(L, -2, 0); /* delete old buffer */ + lua_remove(L, -2); /* remove its header from the stack */ + } +} + + +LUALIB_API void luaL_pushresultsize (luaL_Buffer *B, size_t sz) { + luaL_addsize(B, sz); + luaL_pushresult(B); +} + + +LUALIB_API void luaL_addvalue (luaL_Buffer *B) { + lua_State *L = B->L; + size_t l; + const char *s = lua_tolstring(L, -1, &l); + if (buffonstack(B)) + lua_insert(L, -2); /* put value below buffer */ + luaL_addlstring(B, s, l); + lua_remove(L, (buffonstack(B)) ? -2 : -1); /* remove value */ +} + + +LUALIB_API void luaL_buffinit (lua_State *L, luaL_Buffer *B) { + B->L = L; + B->b = B->initb; + B->n = 0; + B->size = LUAL_BUFFERSIZE; +} + + +LUALIB_API char *luaL_buffinitsize (lua_State *L, luaL_Buffer *B, size_t sz) { + luaL_buffinit(L, B); + return luaL_prepbuffsize(B, sz); +} + +/* }====================================================== */ + + +/* +** {====================================================== +** Reference system +** ======================================================= +*/ + +/* index of free-list header */ +#define freelist 0 + + +LUALIB_API int luaL_ref (lua_State *L, int t) { + int ref; + if (lua_isnil(L, -1)) { + lua_pop(L, 1); /* remove from stack */ + return LUA_REFNIL; /* 'nil' has a unique fixed reference */ + } + t = lua_absindex(L, t); + lua_rawgeti(L, t, freelist); /* get first free element */ + ref = (int)lua_tointeger(L, -1); /* ref = t[freelist] */ + lua_pop(L, 1); /* remove it from stack */ + if (ref != 0) { /* any free element? */ + lua_rawgeti(L, t, ref); /* remove it from list */ + lua_rawseti(L, t, freelist); /* (t[freelist] = t[ref]) */ + } + else /* no free elements */ + ref = (int)lua_rawlen(L, t) + 1; /* get a new reference */ + lua_rawseti(L, t, ref); + return ref; +} + + +LUALIB_API void luaL_unref (lua_State *L, int t, int ref) { + if (ref >= 0) { + t = lua_absindex(L, t); + lua_rawgeti(L, t, freelist); + lua_rawseti(L, t, ref); /* t[ref] = t[freelist] */ + lua_pushinteger(L, ref); + lua_rawseti(L, t, freelist); /* t[freelist] = ref */ + } +} + +/* }====================================================== */ + + +/* +** {====================================================== +** Load functions +** ======================================================= +*/ + +typedef struct LoadF { + int n; /* number of pre-read characters */ + FILE *f; /* file being read */ + char buff[BUFSIZ]; /* area for reading file */ +} LoadF; + + +static const char *getF (lua_State *L, void *ud, size_t *size) { + LoadF *lf = (LoadF *)ud; + (void)L; /* not used */ + if (lf->n > 0) { /* are there pre-read characters to be read? */ + *size = lf->n; /* return them (chars already in buffer) */ + lf->n = 0; /* no more pre-read characters */ + } + else { /* read a block from file */ + /* 'fread' can return > 0 *and* set the EOF flag. If next call to + 'getF' called 'fread', it might still wait for user input. + The next check avoids this problem. */ + if (feof(lf->f)) return NULL; + *size = fread(lf->buff, 1, sizeof(lf->buff), lf->f); /* read block */ + } + return lf->buff; +} + + +static int errfile (lua_State *L, const char *what, int fnameindex) { + const char *serr = strerror(errno); + const char *filename = lua_tostring(L, fnameindex) + 1; + lua_pushfstring(L, "cannot %s %s: %s", what, filename, serr); + lua_remove(L, fnameindex); + return LUA_ERRFILE; +} + + +static int skipBOM (LoadF *lf) { + const char *p = "\xEF\xBB\xBF"; /* UTF-8 BOM mark */ + int c; + lf->n = 0; + do { + c = getc(lf->f); + if (c == EOF || c != *(const unsigned char *)p++) return c; + lf->buff[lf->n++] = c; /* to be read by the parser */ + } while (*p != '\0'); + lf->n = 0; /* prefix matched; discard it */ + return getc(lf->f); /* return next character */ +} + + +/* +** reads the first character of file 'f' and skips an optional BOM mark +** in its beginning plus its first line if it starts with '#'. Returns +** true if it skipped the first line. In any case, '*cp' has the +** first "valid" character of the file (after the optional BOM and +** a first-line comment). +*/ +static int skipcomment (LoadF *lf, int *cp) { + int c = *cp = skipBOM(lf); + if (c == '#') { /* first line is a comment (Unix exec. file)? */ + do { /* skip first line */ + c = getc(lf->f); + } while (c != EOF && c != '\n'); + *cp = getc(lf->f); /* skip end-of-line, if present */ + return 1; /* there was a comment */ + } + else return 0; /* no comment */ +} + + +LUALIB_API int luaL_loadfilex (lua_State *L, const char *filename, + const char *mode) { + LoadF lf; + int status, readstatus; + int c; + int fnameindex = lua_gettop(L) + 1; /* index of filename on the stack */ + if (filename == NULL) { + lua_pushliteral(L, "=stdin"); + lf.f = stdin; + } + else { + lua_pushfstring(L, "@%s", filename); + lf.f = fopen(filename, "r"); + if (lf.f == NULL) return errfile(L, "open", fnameindex); + } + if (skipcomment(&lf, &c)) /* read initial portion */ + lf.buff[lf.n++] = '\n'; /* add line to correct line numbers */ + if (c == LUA_SIGNATURE[0] && filename) { /* binary file? */ + lf.f = freopen(filename, "rb", lf.f); /* reopen in binary mode */ + if (lf.f == NULL) return errfile(L, "reopen", fnameindex); + skipcomment(&lf, &c); /* re-read initial portion */ + } + if (c != EOF) + lf.buff[lf.n++] = c; /* 'c' is the first character of the stream */ + status = lua_load(L, getF, &lf, lua_tostring(L, -1), mode); + readstatus = ferror(lf.f); + if (filename) fclose(lf.f); /* close file (even in case of errors) */ + if (readstatus) { + lua_settop(L, fnameindex); /* ignore results from 'lua_load' */ + return errfile(L, "read", fnameindex); + } + lua_remove(L, fnameindex); + return status; +} + + +typedef struct LoadS { + const char *s; + size_t size; +} LoadS; + + +static const char *getS (lua_State *L, void *ud, size_t *size) { + LoadS *ls = (LoadS *)ud; + (void)L; /* not used */ + if (ls->size == 0) return NULL; + *size = ls->size; + ls->size = 0; + return ls->s; +} + + +LUALIB_API int luaL_loadbufferx (lua_State *L, const char *buff, size_t size, + const char *name, const char *mode) { + LoadS ls; + ls.s = buff; + ls.size = size; + return lua_load(L, getS, &ls, name, mode); +} + + +LUALIB_API int luaL_loadstring (lua_State *L, const char *s) { + return luaL_loadbuffer(L, s, strlen(s), s); +} + +/* }====================================================== */ + + + +LUALIB_API int luaL_getmetafield (lua_State *L, int obj, const char *event) { + if (!lua_getmetatable(L, obj)) /* no metatable? */ + return LUA_TNIL; + else { + int tt; + lua_pushstring(L, event); + tt = lua_rawget(L, -2); + if (tt == LUA_TNIL) /* is metafield nil? */ + lua_pop(L, 2); /* remove metatable and metafield */ + else + lua_remove(L, -2); /* remove only metatable */ + return tt; /* return metafield type */ + } +} + + +LUALIB_API int luaL_callmeta (lua_State *L, int obj, const char *event) { + obj = lua_absindex(L, obj); + if (luaL_getmetafield(L, obj, event) == LUA_TNIL) /* no metafield? */ + return 0; + lua_pushvalue(L, obj); + lua_call(L, 1, 1); + return 1; +} + + +LUALIB_API lua_Integer luaL_len (lua_State *L, int idx) { + lua_Integer l; + int isnum; + lua_len(L, idx); + l = lua_tointegerx(L, -1, &isnum); + if (!isnum) + luaL_error(L, "object length is not an integer"); + lua_pop(L, 1); /* remove object */ + return l; +} + + +LUALIB_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len) { + if (luaL_callmeta(L, idx, "__tostring")) { /* metafield? */ + if (!lua_isstring(L, -1)) + luaL_error(L, "'__tostring' must return a string"); + } + else { + switch (lua_type(L, idx)) { + case LUA_TNUMBER: { + if (lua_isinteger(L, idx)) + lua_pushfstring(L, "%I", (LUAI_UACINT)lua_tointeger(L, idx)); + else + lua_pushfstring(L, "%f", (LUAI_UACNUMBER)lua_tonumber(L, idx)); + break; + } + case LUA_TSTRING: + lua_pushvalue(L, idx); + break; + case LUA_TBOOLEAN: + lua_pushstring(L, (lua_toboolean(L, idx) ? "true" : "false")); + break; + case LUA_TNIL: + lua_pushliteral(L, "nil"); + break; + default: { + int tt = luaL_getmetafield(L, idx, "__name"); /* try name */ + const char *kind = (tt == LUA_TSTRING) ? lua_tostring(L, -1) : + luaL_typename(L, idx); + lua_pushfstring(L, "%s: %p", kind, lua_topointer(L, idx)); + if (tt != LUA_TNIL) + lua_remove(L, -2); /* remove '__name' */ + break; + } + } + } + return lua_tolstring(L, -1, len); +} + + +/* +** {====================================================== +** Compatibility with 5.1 module functions +** ======================================================= +*/ +#if defined(LUA_COMPAT_MODULE) + +static const char *luaL_findtable (lua_State *L, int idx, + const char *fname, int szhint) { + const char *e; + if (idx) lua_pushvalue(L, idx); + do { + e = strchr(fname, '.'); + if (e == NULL) e = fname + strlen(fname); + lua_pushlstring(L, fname, e - fname); + if (lua_rawget(L, -2) == LUA_TNIL) { /* no such field? */ + lua_pop(L, 1); /* remove this nil */ + lua_createtable(L, 0, (*e == '.' ? 1 : szhint)); /* new table for field */ + lua_pushlstring(L, fname, e - fname); + lua_pushvalue(L, -2); + lua_settable(L, -4); /* set new table into field */ + } + else if (!lua_istable(L, -1)) { /* field has a non-table value? */ + lua_pop(L, 2); /* remove table and value */ + return fname; /* return problematic part of the name */ + } + lua_remove(L, -2); /* remove previous table */ + fname = e + 1; + } while (*e == '.'); + return NULL; +} + + +/* +** Count number of elements in a luaL_Reg list. +*/ +static int libsize (const luaL_Reg *l) { + int size = 0; + for (; l && l->name; l++) size++; + return size; +} + + +/* +** Find or create a module table with a given name. The function +** first looks at the LOADED table and, if that fails, try a +** global variable with that name. In any case, leaves on the stack +** the module table. +*/ +LUALIB_API void luaL_pushmodule (lua_State *L, const char *modname, + int sizehint) { + luaL_findtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE, 1); + if (lua_getfield(L, -1, modname) != LUA_TTABLE) { /* no LOADED[modname]? */ + lua_pop(L, 1); /* remove previous result */ + /* try global variable (and create one if it does not exist) */ + lua_pushglobaltable(L); + if (luaL_findtable(L, 0, modname, sizehint) != NULL) + luaL_error(L, "name conflict for module '%s'", modname); + lua_pushvalue(L, -1); + lua_setfield(L, -3, modname); /* LOADED[modname] = new table */ + } + lua_remove(L, -2); /* remove LOADED table */ +} + + +LUALIB_API void luaL_openlib (lua_State *L, const char *libname, + const luaL_Reg *l, int nup) { + luaL_checkversion(L); + if (libname) { + luaL_pushmodule(L, libname, libsize(l)); /* get/create library table */ + lua_insert(L, -(nup + 1)); /* move library table to below upvalues */ + } + if (l) + luaL_setfuncs(L, l, nup); + else + lua_pop(L, nup); /* remove upvalues */ +} + +#endif +/* }====================================================== */ + +/* +** set functions from list 'l' into table at top - 'nup'; each +** function gets the 'nup' elements at the top as upvalues. +** Returns with only the table at the stack. +*/ +LUALIB_API void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup) { + luaL_checkstack(L, nup, "too many upvalues"); + for (; l->name != NULL; l++) { /* fill the table with given functions */ + int i; + for (i = 0; i < nup; i++) /* copy upvalues to the top */ + lua_pushvalue(L, -nup); + lua_pushcclosure(L, l->func, nup); /* closure with those upvalues */ + lua_setfield(L, -(nup + 2), l->name); + } + lua_pop(L, nup); /* remove upvalues */ +} + + +/* +** ensure that stack[idx][fname] has a table and push that table +** into the stack +*/ +LUALIB_API int luaL_getsubtable (lua_State *L, int idx, const char *fname) { + if (lua_getfield(L, idx, fname) == LUA_TTABLE) + return 1; /* table already there */ + else { + lua_pop(L, 1); /* remove previous result */ + idx = lua_absindex(L, idx); + lua_newtable(L); + lua_pushvalue(L, -1); /* copy to be left at top */ + lua_setfield(L, idx, fname); /* assign new table to field */ + return 0; /* false, because did not find table there */ + } +} + + +/* +** Stripped-down 'require': After checking "loaded" table, calls 'openf' +** to open a module, registers the result in 'package.loaded' table and, +** if 'glb' is true, also registers the result in the global table. +** Leaves resulting module on the top. +*/ +LUALIB_API void luaL_requiref (lua_State *L, const char *modname, + lua_CFunction openf, int glb) { + luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE); + lua_getfield(L, -1, modname); /* LOADED[modname] */ + if (!lua_toboolean(L, -1)) { /* package not already loaded? */ + lua_pop(L, 1); /* remove field */ + lua_pushcfunction(L, openf); + lua_pushstring(L, modname); /* argument to open function */ + lua_call(L, 1, 1); /* call 'openf' to open module */ + lua_pushvalue(L, -1); /* make copy of module (call result) */ + lua_setfield(L, -3, modname); /* LOADED[modname] = module */ + } + lua_remove(L, -2); /* remove LOADED table */ + if (glb) { + lua_pushvalue(L, -1); /* copy of module */ + lua_setglobal(L, modname); /* _G[modname] = module */ + } +} + + +LUALIB_API const char *luaL_gsub (lua_State *L, const char *s, const char *p, + const char *r) { + const char *wild; + size_t l = strlen(p); + luaL_Buffer b; + luaL_buffinit(L, &b); + while ((wild = strstr(s, p)) != NULL) { + luaL_addlstring(&b, s, wild - s); /* push prefix */ + luaL_addstring(&b, r); /* push replacement in place of pattern */ + s = wild + l; /* continue after 'p' */ + } + luaL_addstring(&b, s); /* push last suffix */ + luaL_pushresult(&b); + return lua_tostring(L, -1); +} + + +static void *l_alloc (void *ud, void *ptr, size_t osize, size_t nsize) { + (void)ud; (void)osize; /* not used */ + if (nsize == 0) { + free(ptr); + return NULL; + } + else + return realloc(ptr, nsize); +} + + +static int panic (lua_State *L) { + lua_writestringerror("PANIC: unprotected error in call to Lua API (%s)\n", + lua_tostring(L, -1)); + return 0; /* return to Lua to abort */ +} + + +LUALIB_API lua_State *luaL_newstate (void) { + lua_State *L = lua_newstate(l_alloc, NULL); + if (L) lua_atpanic(L, &panic); + return L; +} + + +LUALIB_API void luaL_checkversion_ (lua_State *L, lua_Number ver, size_t sz) { + const lua_Number *v = lua_version(L); + if (sz != LUAL_NUMSIZES) /* check numeric types */ + luaL_error(L, "core and library have incompatible numeric types"); + if (v != lua_version(NULL)) + luaL_error(L, "multiple Lua VMs detected"); + else if (*v != ver) + luaL_error(L, "version mismatch: app. needs %f, Lua core provides %f", + (LUAI_UACNUMBER)ver, (LUAI_UACNUMBER)*v); +} + diff --git a/deps/rcheevos/test/lua/src/lauxlib.h b/deps/rcheevos/test/lua/src/lauxlib.h new file mode 100644 index 0000000000..9a2e66aa06 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lauxlib.h @@ -0,0 +1,264 @@ +/* +** $Id: lauxlib.h,v 1.131 2016/12/06 14:54:31 roberto Exp $ +** Auxiliary functions for building Lua libraries +** See Copyright Notice in lua.h +*/ + + +#ifndef lauxlib_h +#define lauxlib_h + + +#include +#include + +#include "lua.h" + + + +/* extra error code for 'luaL_loadfilex' */ +#define LUA_ERRFILE (LUA_ERRERR+1) + + +/* key, in the registry, for table of loaded modules */ +#define LUA_LOADED_TABLE "_LOADED" + + +/* key, in the registry, for table of preloaded loaders */ +#define LUA_PRELOAD_TABLE "_PRELOAD" + + +typedef struct luaL_Reg { + const char *name; + lua_CFunction func; +} luaL_Reg; + + +#define LUAL_NUMSIZES (sizeof(lua_Integer)*16 + sizeof(lua_Number)) + +LUALIB_API void (luaL_checkversion_) (lua_State *L, lua_Number ver, size_t sz); +#define luaL_checkversion(L) \ + luaL_checkversion_(L, LUA_VERSION_NUM, LUAL_NUMSIZES) + +LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e); +LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e); +LUALIB_API const char *(luaL_tolstring) (lua_State *L, int idx, size_t *len); +LUALIB_API int (luaL_argerror) (lua_State *L, int arg, const char *extramsg); +LUALIB_API const char *(luaL_checklstring) (lua_State *L, int arg, + size_t *l); +LUALIB_API const char *(luaL_optlstring) (lua_State *L, int arg, + const char *def, size_t *l); +LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int arg); +LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int arg, lua_Number def); + +LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int arg); +LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int arg, + lua_Integer def); + +LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg); +LUALIB_API void (luaL_checktype) (lua_State *L, int arg, int t); +LUALIB_API void (luaL_checkany) (lua_State *L, int arg); + +LUALIB_API int (luaL_newmetatable) (lua_State *L, const char *tname); +LUALIB_API void (luaL_setmetatable) (lua_State *L, const char *tname); +LUALIB_API void *(luaL_testudata) (lua_State *L, int ud, const char *tname); +LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname); + +LUALIB_API void (luaL_where) (lua_State *L, int lvl); +LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...); + +LUALIB_API int (luaL_checkoption) (lua_State *L, int arg, const char *def, + const char *const lst[]); + +LUALIB_API int (luaL_fileresult) (lua_State *L, int stat, const char *fname); +LUALIB_API int (luaL_execresult) (lua_State *L, int stat); + +/* predefined references */ +#define LUA_NOREF (-2) +#define LUA_REFNIL (-1) + +LUALIB_API int (luaL_ref) (lua_State *L, int t); +LUALIB_API void (luaL_unref) (lua_State *L, int t, int ref); + +LUALIB_API int (luaL_loadfilex) (lua_State *L, const char *filename, + const char *mode); + +#define luaL_loadfile(L,f) luaL_loadfilex(L,f,NULL) + +LUALIB_API int (luaL_loadbufferx) (lua_State *L, const char *buff, size_t sz, + const char *name, const char *mode); +LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s); + +LUALIB_API lua_State *(luaL_newstate) (void); + +LUALIB_API lua_Integer (luaL_len) (lua_State *L, int idx); + +LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p, + const char *r); + +LUALIB_API void (luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup); + +LUALIB_API int (luaL_getsubtable) (lua_State *L, int idx, const char *fname); + +LUALIB_API void (luaL_traceback) (lua_State *L, lua_State *L1, + const char *msg, int level); + +LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname, + lua_CFunction openf, int glb); + +/* +** =============================================================== +** some useful macros +** =============================================================== +*/ + + +#define luaL_newlibtable(L,l) \ + lua_createtable(L, 0, sizeof(l)/sizeof((l)[0]) - 1) + +#define luaL_newlib(L,l) \ + (luaL_checkversion(L), luaL_newlibtable(L,l), luaL_setfuncs(L,l,0)) + +#define luaL_argcheck(L, cond,arg,extramsg) \ + ((void)((cond) || luaL_argerror(L, (arg), (extramsg)))) +#define luaL_checkstring(L,n) (luaL_checklstring(L, (n), NULL)) +#define luaL_optstring(L,n,d) (luaL_optlstring(L, (n), (d), NULL)) + +#define luaL_typename(L,i) lua_typename(L, lua_type(L,(i))) + +#define luaL_dofile(L, fn) \ + (luaL_loadfile(L, fn) || lua_pcall(L, 0, LUA_MULTRET, 0)) + +#define luaL_dostring(L, s) \ + (luaL_loadstring(L, s) || lua_pcall(L, 0, LUA_MULTRET, 0)) + +#define luaL_getmetatable(L,n) (lua_getfield(L, LUA_REGISTRYINDEX, (n))) + +#define luaL_opt(L,f,n,d) (lua_isnoneornil(L,(n)) ? (d) : f(L,(n))) + +#define luaL_loadbuffer(L,s,sz,n) luaL_loadbufferx(L,s,sz,n,NULL) + + +/* +** {====================================================== +** Generic Buffer manipulation +** ======================================================= +*/ + +typedef struct luaL_Buffer { + char *b; /* buffer address */ + size_t size; /* buffer size */ + size_t n; /* number of characters in buffer */ + lua_State *L; + char initb[LUAL_BUFFERSIZE]; /* initial buffer */ +} luaL_Buffer; + + +#define luaL_addchar(B,c) \ + ((void)((B)->n < (B)->size || luaL_prepbuffsize((B), 1)), \ + ((B)->b[(B)->n++] = (c))) + +#define luaL_addsize(B,s) ((B)->n += (s)) + +LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B); +LUALIB_API char *(luaL_prepbuffsize) (luaL_Buffer *B, size_t sz); +LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l); +LUALIB_API void (luaL_addstring) (luaL_Buffer *B, const char *s); +LUALIB_API void (luaL_addvalue) (luaL_Buffer *B); +LUALIB_API void (luaL_pushresult) (luaL_Buffer *B); +LUALIB_API void (luaL_pushresultsize) (luaL_Buffer *B, size_t sz); +LUALIB_API char *(luaL_buffinitsize) (lua_State *L, luaL_Buffer *B, size_t sz); + +#define luaL_prepbuffer(B) luaL_prepbuffsize(B, LUAL_BUFFERSIZE) + +/* }====================================================== */ + + + +/* +** {====================================================== +** File handles for IO library +** ======================================================= +*/ + +/* +** A file handle is a userdata with metatable 'LUA_FILEHANDLE' and +** initial structure 'luaL_Stream' (it may contain other fields +** after that initial structure). +*/ + +#define LUA_FILEHANDLE "FILE*" + + +typedef struct luaL_Stream { + FILE *f; /* stream (NULL for incompletely created streams) */ + lua_CFunction closef; /* to close stream (NULL for closed streams) */ +} luaL_Stream; + +/* }====================================================== */ + + + +/* compatibility with old module system */ +#if defined(LUA_COMPAT_MODULE) + +LUALIB_API void (luaL_pushmodule) (lua_State *L, const char *modname, + int sizehint); +LUALIB_API void (luaL_openlib) (lua_State *L, const char *libname, + const luaL_Reg *l, int nup); + +#define luaL_register(L,n,l) (luaL_openlib(L,(n),(l),0)) + +#endif + + +/* +** {================================================================== +** "Abstraction Layer" for basic report of messages and errors +** =================================================================== +*/ + +/* print a string */ +#if !defined(lua_writestring) +#define lua_writestring(s,l) fwrite((s), sizeof(char), (l), stdout) +#endif + +/* print a newline and flush the output */ +#if !defined(lua_writeline) +#define lua_writeline() (lua_writestring("\n", 1), fflush(stdout)) +#endif + +/* print an error message */ +#if !defined(lua_writestringerror) +#define lua_writestringerror(s,p) \ + (fprintf(stderr, (s), (p)), fflush(stderr)) +#endif + +/* }================================================================== */ + + +/* +** {============================================================ +** Compatibility with deprecated conversions +** ============================================================= +*/ +#if defined(LUA_COMPAT_APIINTCASTS) + +#define luaL_checkunsigned(L,a) ((lua_Unsigned)luaL_checkinteger(L,a)) +#define luaL_optunsigned(L,a,d) \ + ((lua_Unsigned)luaL_optinteger(L,a,(lua_Integer)(d))) + +#define luaL_checkint(L,n) ((int)luaL_checkinteger(L, (n))) +#define luaL_optint(L,n,d) ((int)luaL_optinteger(L, (n), (d))) + +#define luaL_checklong(L,n) ((long)luaL_checkinteger(L, (n))) +#define luaL_optlong(L,n,d) ((long)luaL_optinteger(L, (n), (d))) + +#endif +/* }============================================================ */ + + + +#endif + + diff --git a/deps/rcheevos/test/lua/src/lbaselib.c b/deps/rcheevos/test/lua/src/lbaselib.c new file mode 100644 index 0000000000..08523e6e75 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lbaselib.c @@ -0,0 +1,498 @@ +/* +** $Id: lbaselib.c,v 1.314 2016/09/05 19:06:34 roberto Exp $ +** Basic library +** See Copyright Notice in lua.h +*/ + +#define lbaselib_c +#define LUA_LIB + +#include "lprefix.h" + + +#include +#include +#include +#include + +#include "lua.h" + +#include "lauxlib.h" +#include "lualib.h" + + +static int luaB_print (lua_State *L) { + int n = lua_gettop(L); /* number of arguments */ + int i; + lua_getglobal(L, "tostring"); + for (i=1; i<=n; i++) { + const char *s; + size_t l; + lua_pushvalue(L, -1); /* function to be called */ + lua_pushvalue(L, i); /* value to print */ + lua_call(L, 1, 1); + s = lua_tolstring(L, -1, &l); /* get result */ + if (s == NULL) + return luaL_error(L, "'tostring' must return a string to 'print'"); + if (i>1) lua_writestring("\t", 1); + lua_writestring(s, l); + lua_pop(L, 1); /* pop result */ + } + lua_writeline(); + return 0; +} + + +#define SPACECHARS " \f\n\r\t\v" + +static const char *b_str2int (const char *s, int base, lua_Integer *pn) { + lua_Unsigned n = 0; + int neg = 0; + s += strspn(s, SPACECHARS); /* skip initial spaces */ + if (*s == '-') { s++; neg = 1; } /* handle signal */ + else if (*s == '+') s++; + if (!isalnum((unsigned char)*s)) /* no digit? */ + return NULL; + do { + int digit = (isdigit((unsigned char)*s)) ? *s - '0' + : (toupper((unsigned char)*s) - 'A') + 10; + if (digit >= base) return NULL; /* invalid numeral */ + n = n * base + digit; + s++; + } while (isalnum((unsigned char)*s)); + s += strspn(s, SPACECHARS); /* skip trailing spaces */ + *pn = (lua_Integer)((neg) ? (0u - n) : n); + return s; +} + + +static int luaB_tonumber (lua_State *L) { + if (lua_isnoneornil(L, 2)) { /* standard conversion? */ + luaL_checkany(L, 1); + if (lua_type(L, 1) == LUA_TNUMBER) { /* already a number? */ + lua_settop(L, 1); /* yes; return it */ + return 1; + } + else { + size_t l; + const char *s = lua_tolstring(L, 1, &l); + if (s != NULL && lua_stringtonumber(L, s) == l + 1) + return 1; /* successful conversion to number */ + /* else not a number */ + } + } + else { + size_t l; + const char *s; + lua_Integer n = 0; /* to avoid warnings */ + lua_Integer base = luaL_checkinteger(L, 2); + luaL_checktype(L, 1, LUA_TSTRING); /* no numbers as strings */ + s = lua_tolstring(L, 1, &l); + luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range"); + if (b_str2int(s, (int)base, &n) == s + l) { + lua_pushinteger(L, n); + return 1; + } /* else not a number */ + } /* else not a number */ + lua_pushnil(L); /* not a number */ + return 1; +} + + +static int luaB_error (lua_State *L) { + int level = (int)luaL_optinteger(L, 2, 1); + lua_settop(L, 1); + if (lua_type(L, 1) == LUA_TSTRING && level > 0) { + luaL_where(L, level); /* add extra information */ + lua_pushvalue(L, 1); + lua_concat(L, 2); + } + return lua_error(L); +} + + +static int luaB_getmetatable (lua_State *L) { + luaL_checkany(L, 1); + if (!lua_getmetatable(L, 1)) { + lua_pushnil(L); + return 1; /* no metatable */ + } + luaL_getmetafield(L, 1, "__metatable"); + return 1; /* returns either __metatable field (if present) or metatable */ +} + + +static int luaB_setmetatable (lua_State *L) { + int t = lua_type(L, 2); + luaL_checktype(L, 1, LUA_TTABLE); + luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2, + "nil or table expected"); + if (luaL_getmetafield(L, 1, "__metatable") != LUA_TNIL) + return luaL_error(L, "cannot change a protected metatable"); + lua_settop(L, 2); + lua_setmetatable(L, 1); + return 1; +} + + +static int luaB_rawequal (lua_State *L) { + luaL_checkany(L, 1); + luaL_checkany(L, 2); + lua_pushboolean(L, lua_rawequal(L, 1, 2)); + return 1; +} + + +static int luaB_rawlen (lua_State *L) { + int t = lua_type(L, 1); + luaL_argcheck(L, t == LUA_TTABLE || t == LUA_TSTRING, 1, + "table or string expected"); + lua_pushinteger(L, lua_rawlen(L, 1)); + return 1; +} + + +static int luaB_rawget (lua_State *L) { + luaL_checktype(L, 1, LUA_TTABLE); + luaL_checkany(L, 2); + lua_settop(L, 2); + lua_rawget(L, 1); + return 1; +} + +static int luaB_rawset (lua_State *L) { + luaL_checktype(L, 1, LUA_TTABLE); + luaL_checkany(L, 2); + luaL_checkany(L, 3); + lua_settop(L, 3); + lua_rawset(L, 1); + return 1; +} + + +static int luaB_collectgarbage (lua_State *L) { + static const char *const opts[] = {"stop", "restart", "collect", + "count", "step", "setpause", "setstepmul", + "isrunning", NULL}; + static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT, + LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL, + LUA_GCISRUNNING}; + int o = optsnum[luaL_checkoption(L, 1, "collect", opts)]; + int ex = (int)luaL_optinteger(L, 2, 0); + int res = lua_gc(L, o, ex); + switch (o) { + case LUA_GCCOUNT: { + int b = lua_gc(L, LUA_GCCOUNTB, 0); + lua_pushnumber(L, (lua_Number)res + ((lua_Number)b/1024)); + return 1; + } + case LUA_GCSTEP: case LUA_GCISRUNNING: { + lua_pushboolean(L, res); + return 1; + } + default: { + lua_pushinteger(L, res); + return 1; + } + } +} + + +static int luaB_type (lua_State *L) { + int t = lua_type(L, 1); + luaL_argcheck(L, t != LUA_TNONE, 1, "value expected"); + lua_pushstring(L, lua_typename(L, t)); + return 1; +} + + +static int pairsmeta (lua_State *L, const char *method, int iszero, + lua_CFunction iter) { + luaL_checkany(L, 1); + if (luaL_getmetafield(L, 1, method) == LUA_TNIL) { /* no metamethod? */ + lua_pushcfunction(L, iter); /* will return generator, */ + lua_pushvalue(L, 1); /* state, */ + if (iszero) lua_pushinteger(L, 0); /* and initial value */ + else lua_pushnil(L); + } + else { + lua_pushvalue(L, 1); /* argument 'self' to metamethod */ + lua_call(L, 1, 3); /* get 3 values from metamethod */ + } + return 3; +} + + +static int luaB_next (lua_State *L) { + luaL_checktype(L, 1, LUA_TTABLE); + lua_settop(L, 2); /* create a 2nd argument if there isn't one */ + if (lua_next(L, 1)) + return 2; + else { + lua_pushnil(L); + return 1; + } +} + + +static int luaB_pairs (lua_State *L) { + return pairsmeta(L, "__pairs", 0, luaB_next); +} + + +/* +** Traversal function for 'ipairs' +*/ +static int ipairsaux (lua_State *L) { + lua_Integer i = luaL_checkinteger(L, 2) + 1; + lua_pushinteger(L, i); + return (lua_geti(L, 1, i) == LUA_TNIL) ? 1 : 2; +} + + +/* +** 'ipairs' function. Returns 'ipairsaux', given "table", 0. +** (The given "table" may not be a table.) +*/ +static int luaB_ipairs (lua_State *L) { +#if defined(LUA_COMPAT_IPAIRS) + return pairsmeta(L, "__ipairs", 1, ipairsaux); +#else + luaL_checkany(L, 1); + lua_pushcfunction(L, ipairsaux); /* iteration function */ + lua_pushvalue(L, 1); /* state */ + lua_pushinteger(L, 0); /* initial value */ + return 3; +#endif +} + + +static int load_aux (lua_State *L, int status, int envidx) { + if (status == LUA_OK) { + if (envidx != 0) { /* 'env' parameter? */ + lua_pushvalue(L, envidx); /* environment for loaded function */ + if (!lua_setupvalue(L, -2, 1)) /* set it as 1st upvalue */ + lua_pop(L, 1); /* remove 'env' if not used by previous call */ + } + return 1; + } + else { /* error (message is on top of the stack) */ + lua_pushnil(L); + lua_insert(L, -2); /* put before error message */ + return 2; /* return nil plus error message */ + } +} + + +static int luaB_loadfile (lua_State *L) { + const char *fname = luaL_optstring(L, 1, NULL); + const char *mode = luaL_optstring(L, 2, NULL); + int env = (!lua_isnone(L, 3) ? 3 : 0); /* 'env' index or 0 if no 'env' */ + int status = luaL_loadfilex(L, fname, mode); + return load_aux(L, status, env); +} + + +/* +** {====================================================== +** Generic Read function +** ======================================================= +*/ + + +/* +** reserved slot, above all arguments, to hold a copy of the returned +** string to avoid it being collected while parsed. 'load' has four +** optional arguments (chunk, source name, mode, and environment). +*/ +#define RESERVEDSLOT 5 + + +/* +** Reader for generic 'load' function: 'lua_load' uses the +** stack for internal stuff, so the reader cannot change the +** stack top. Instead, it keeps its resulting string in a +** reserved slot inside the stack. +*/ +static const char *generic_reader (lua_State *L, void *ud, size_t *size) { + (void)(ud); /* not used */ + luaL_checkstack(L, 2, "too many nested functions"); + lua_pushvalue(L, 1); /* get function */ + lua_call(L, 0, 1); /* call it */ + if (lua_isnil(L, -1)) { + lua_pop(L, 1); /* pop result */ + *size = 0; + return NULL; + } + else if (!lua_isstring(L, -1)) + luaL_error(L, "reader function must return a string"); + lua_replace(L, RESERVEDSLOT); /* save string in reserved slot */ + return lua_tolstring(L, RESERVEDSLOT, size); +} + + +static int luaB_load (lua_State *L) { + int status; + size_t l; + const char *s = lua_tolstring(L, 1, &l); + const char *mode = luaL_optstring(L, 3, "bt"); + int env = (!lua_isnone(L, 4) ? 4 : 0); /* 'env' index or 0 if no 'env' */ + if (s != NULL) { /* loading a string? */ + const char *chunkname = luaL_optstring(L, 2, s); + status = luaL_loadbufferx(L, s, l, chunkname, mode); + } + else { /* loading from a reader function */ + const char *chunkname = luaL_optstring(L, 2, "=(load)"); + luaL_checktype(L, 1, LUA_TFUNCTION); + lua_settop(L, RESERVEDSLOT); /* create reserved slot */ + status = lua_load(L, generic_reader, NULL, chunkname, mode); + } + return load_aux(L, status, env); +} + +/* }====================================================== */ + + +static int dofilecont (lua_State *L, int d1, lua_KContext d2) { + (void)d1; (void)d2; /* only to match 'lua_Kfunction' prototype */ + return lua_gettop(L) - 1; +} + + +static int luaB_dofile (lua_State *L) { + const char *fname = luaL_optstring(L, 1, NULL); + lua_settop(L, 1); + if (luaL_loadfile(L, fname) != LUA_OK) + return lua_error(L); + lua_callk(L, 0, LUA_MULTRET, 0, dofilecont); + return dofilecont(L, 0, 0); +} + + +static int luaB_assert (lua_State *L) { + if (lua_toboolean(L, 1)) /* condition is true? */ + return lua_gettop(L); /* return all arguments */ + else { /* error */ + luaL_checkany(L, 1); /* there must be a condition */ + lua_remove(L, 1); /* remove it */ + lua_pushliteral(L, "assertion failed!"); /* default message */ + lua_settop(L, 1); /* leave only message (default if no other one) */ + return luaB_error(L); /* call 'error' */ + } +} + + +static int luaB_select (lua_State *L) { + int n = lua_gettop(L); + if (lua_type(L, 1) == LUA_TSTRING && *lua_tostring(L, 1) == '#') { + lua_pushinteger(L, n-1); + return 1; + } + else { + lua_Integer i = luaL_checkinteger(L, 1); + if (i < 0) i = n + i; + else if (i > n) i = n; + luaL_argcheck(L, 1 <= i, 1, "index out of range"); + return n - (int)i; + } +} + + +/* +** Continuation function for 'pcall' and 'xpcall'. Both functions +** already pushed a 'true' before doing the call, so in case of success +** 'finishpcall' only has to return everything in the stack minus +** 'extra' values (where 'extra' is exactly the number of items to be +** ignored). +*/ +static int finishpcall (lua_State *L, int status, lua_KContext extra) { + if (status != LUA_OK && status != LUA_YIELD) { /* error? */ + lua_pushboolean(L, 0); /* first result (false) */ + lua_pushvalue(L, -2); /* error message */ + return 2; /* return false, msg */ + } + else + return lua_gettop(L) - (int)extra; /* return all results */ +} + + +static int luaB_pcall (lua_State *L) { + int status; + luaL_checkany(L, 1); + lua_pushboolean(L, 1); /* first result if no errors */ + lua_insert(L, 1); /* put it in place */ + status = lua_pcallk(L, lua_gettop(L) - 2, LUA_MULTRET, 0, 0, finishpcall); + return finishpcall(L, status, 0); +} + + +/* +** Do a protected call with error handling. After 'lua_rotate', the +** stack will have ; so, the function passes +** 2 to 'finishpcall' to skip the 2 first values when returning results. +*/ +static int luaB_xpcall (lua_State *L) { + int status; + int n = lua_gettop(L); + luaL_checktype(L, 2, LUA_TFUNCTION); /* check error function */ + lua_pushboolean(L, 1); /* first result */ + lua_pushvalue(L, 1); /* function */ + lua_rotate(L, 3, 2); /* move them below function's arguments */ + status = lua_pcallk(L, n - 2, LUA_MULTRET, 2, 2, finishpcall); + return finishpcall(L, status, 2); +} + + +static int luaB_tostring (lua_State *L) { + luaL_checkany(L, 1); + luaL_tolstring(L, 1, NULL); + return 1; +} + + +static const luaL_Reg base_funcs[] = { + {"assert", luaB_assert}, + {"collectgarbage", luaB_collectgarbage}, + {"dofile", luaB_dofile}, + {"error", luaB_error}, + {"getmetatable", luaB_getmetatable}, + {"ipairs", luaB_ipairs}, + {"loadfile", luaB_loadfile}, + {"load", luaB_load}, +#if defined(LUA_COMPAT_LOADSTRING) + {"loadstring", luaB_load}, +#endif + {"next", luaB_next}, + {"pairs", luaB_pairs}, + {"pcall", luaB_pcall}, + {"print", luaB_print}, + {"rawequal", luaB_rawequal}, + {"rawlen", luaB_rawlen}, + {"rawget", luaB_rawget}, + {"rawset", luaB_rawset}, + {"select", luaB_select}, + {"setmetatable", luaB_setmetatable}, + {"tonumber", luaB_tonumber}, + {"tostring", luaB_tostring}, + {"type", luaB_type}, + {"xpcall", luaB_xpcall}, + /* placeholders */ + {"_G", NULL}, + {"_VERSION", NULL}, + {NULL, NULL} +}; + + +LUAMOD_API int luaopen_base (lua_State *L) { + /* open lib into global table */ + lua_pushglobaltable(L); + luaL_setfuncs(L, base_funcs, 0); + /* set global _G */ + lua_pushvalue(L, -1); + lua_setfield(L, -2, "_G"); + /* set global _VERSION */ + lua_pushliteral(L, LUA_VERSION); + lua_setfield(L, -2, "_VERSION"); + return 1; +} + diff --git a/deps/rcheevos/test/lua/src/lbitlib.c b/deps/rcheevos/test/lua/src/lbitlib.c new file mode 100644 index 0000000000..1cb1d5b932 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lbitlib.c @@ -0,0 +1,233 @@ +/* +** $Id: lbitlib.c,v 1.30 2015/11/11 19:08:09 roberto Exp $ +** Standard library for bitwise operations +** See Copyright Notice in lua.h +*/ + +#define lbitlib_c +#define LUA_LIB + +#include "lprefix.h" + + +#include "lua.h" + +#include "lauxlib.h" +#include "lualib.h" + + +#if defined(LUA_COMPAT_BITLIB) /* { */ + + +#define pushunsigned(L,n) lua_pushinteger(L, (lua_Integer)(n)) +#define checkunsigned(L,i) ((lua_Unsigned)luaL_checkinteger(L,i)) + + +/* number of bits to consider in a number */ +#if !defined(LUA_NBITS) +#define LUA_NBITS 32 +#endif + + +/* +** a lua_Unsigned with its first LUA_NBITS bits equal to 1. (Shift must +** be made in two parts to avoid problems when LUA_NBITS is equal to the +** number of bits in a lua_Unsigned.) +*/ +#define ALLONES (~(((~(lua_Unsigned)0) << (LUA_NBITS - 1)) << 1)) + + +/* macro to trim extra bits */ +#define trim(x) ((x) & ALLONES) + + +/* builds a number with 'n' ones (1 <= n <= LUA_NBITS) */ +#define mask(n) (~((ALLONES << 1) << ((n) - 1))) + + + +static lua_Unsigned andaux (lua_State *L) { + int i, n = lua_gettop(L); + lua_Unsigned r = ~(lua_Unsigned)0; + for (i = 1; i <= n; i++) + r &= checkunsigned(L, i); + return trim(r); +} + + +static int b_and (lua_State *L) { + lua_Unsigned r = andaux(L); + pushunsigned(L, r); + return 1; +} + + +static int b_test (lua_State *L) { + lua_Unsigned r = andaux(L); + lua_pushboolean(L, r != 0); + return 1; +} + + +static int b_or (lua_State *L) { + int i, n = lua_gettop(L); + lua_Unsigned r = 0; + for (i = 1; i <= n; i++) + r |= checkunsigned(L, i); + pushunsigned(L, trim(r)); + return 1; +} + + +static int b_xor (lua_State *L) { + int i, n = lua_gettop(L); + lua_Unsigned r = 0; + for (i = 1; i <= n; i++) + r ^= checkunsigned(L, i); + pushunsigned(L, trim(r)); + return 1; +} + + +static int b_not (lua_State *L) { + lua_Unsigned r = ~checkunsigned(L, 1); + pushunsigned(L, trim(r)); + return 1; +} + + +static int b_shift (lua_State *L, lua_Unsigned r, lua_Integer i) { + if (i < 0) { /* shift right? */ + i = -i; + r = trim(r); + if (i >= LUA_NBITS) r = 0; + else r >>= i; + } + else { /* shift left */ + if (i >= LUA_NBITS) r = 0; + else r <<= i; + r = trim(r); + } + pushunsigned(L, r); + return 1; +} + + +static int b_lshift (lua_State *L) { + return b_shift(L, checkunsigned(L, 1), luaL_checkinteger(L, 2)); +} + + +static int b_rshift (lua_State *L) { + return b_shift(L, checkunsigned(L, 1), -luaL_checkinteger(L, 2)); +} + + +static int b_arshift (lua_State *L) { + lua_Unsigned r = checkunsigned(L, 1); + lua_Integer i = luaL_checkinteger(L, 2); + if (i < 0 || !(r & ((lua_Unsigned)1 << (LUA_NBITS - 1)))) + return b_shift(L, r, -i); + else { /* arithmetic shift for 'negative' number */ + if (i >= LUA_NBITS) r = ALLONES; + else + r = trim((r >> i) | ~(trim(~(lua_Unsigned)0) >> i)); /* add signal bit */ + pushunsigned(L, r); + return 1; + } +} + + +static int b_rot (lua_State *L, lua_Integer d) { + lua_Unsigned r = checkunsigned(L, 1); + int i = d & (LUA_NBITS - 1); /* i = d % NBITS */ + r = trim(r); + if (i != 0) /* avoid undefined shift of LUA_NBITS when i == 0 */ + r = (r << i) | (r >> (LUA_NBITS - i)); + pushunsigned(L, trim(r)); + return 1; +} + + +static int b_lrot (lua_State *L) { + return b_rot(L, luaL_checkinteger(L, 2)); +} + + +static int b_rrot (lua_State *L) { + return b_rot(L, -luaL_checkinteger(L, 2)); +} + + +/* +** get field and width arguments for field-manipulation functions, +** checking whether they are valid. +** ('luaL_error' called without 'return' to avoid later warnings about +** 'width' being used uninitialized.) +*/ +static int fieldargs (lua_State *L, int farg, int *width) { + lua_Integer f = luaL_checkinteger(L, farg); + lua_Integer w = luaL_optinteger(L, farg + 1, 1); + luaL_argcheck(L, 0 <= f, farg, "field cannot be negative"); + luaL_argcheck(L, 0 < w, farg + 1, "width must be positive"); + if (f + w > LUA_NBITS) + luaL_error(L, "trying to access non-existent bits"); + *width = (int)w; + return (int)f; +} + + +static int b_extract (lua_State *L) { + int w; + lua_Unsigned r = trim(checkunsigned(L, 1)); + int f = fieldargs(L, 2, &w); + r = (r >> f) & mask(w); + pushunsigned(L, r); + return 1; +} + + +static int b_replace (lua_State *L) { + int w; + lua_Unsigned r = trim(checkunsigned(L, 1)); + lua_Unsigned v = trim(checkunsigned(L, 2)); + int f = fieldargs(L, 3, &w); + lua_Unsigned m = mask(w); + r = (r & ~(m << f)) | ((v & m) << f); + pushunsigned(L, r); + return 1; +} + + +static const luaL_Reg bitlib[] = { + {"arshift", b_arshift}, + {"band", b_and}, + {"bnot", b_not}, + {"bor", b_or}, + {"bxor", b_xor}, + {"btest", b_test}, + {"extract", b_extract}, + {"lrotate", b_lrot}, + {"lshift", b_lshift}, + {"replace", b_replace}, + {"rrotate", b_rrot}, + {"rshift", b_rshift}, + {NULL, NULL} +}; + + + +LUAMOD_API int luaopen_bit32 (lua_State *L) { + luaL_newlib(L, bitlib); + return 1; +} + + +#else /* }{ */ + + +LUAMOD_API int luaopen_bit32 (lua_State *L) { + return luaL_error(L, "library 'bit32' has been deprecated"); +} + +#endif /* } */ diff --git a/deps/rcheevos/test/lua/src/lcode.c b/deps/rcheevos/test/lua/src/lcode.c new file mode 100644 index 0000000000..0bb414262e --- /dev/null +++ b/deps/rcheevos/test/lua/src/lcode.c @@ -0,0 +1,1203 @@ +/* +** $Id: lcode.c,v 2.112 2016/12/22 13:08:50 roberto Exp $ +** Code generator for Lua +** See Copyright Notice in lua.h +*/ + +#define lcode_c +#define LUA_CORE + +#include "lprefix.h" + + +#include +#include + +#include "lua.h" + +#include "lcode.h" +#include "ldebug.h" +#include "ldo.h" +#include "lgc.h" +#include "llex.h" +#include "lmem.h" +#include "lobject.h" +#include "lopcodes.h" +#include "lparser.h" +#include "lstring.h" +#include "ltable.h" +#include "lvm.h" + + +/* Maximum number of registers in a Lua function (must fit in 8 bits) */ +#define MAXREGS 255 + + +#define hasjumps(e) ((e)->t != (e)->f) + + +/* +** If expression is a numeric constant, fills 'v' with its value +** and returns 1. Otherwise, returns 0. +*/ +static int tonumeral(const expdesc *e, TValue *v) { + if (hasjumps(e)) + return 0; /* not a numeral */ + switch (e->k) { + case VKINT: + if (v) setivalue(v, e->u.ival); + return 1; + case VKFLT: + if (v) setfltvalue(v, e->u.nval); + return 1; + default: return 0; + } +} + + +/* +** Create a OP_LOADNIL instruction, but try to optimize: if the previous +** instruction is also OP_LOADNIL and ranges are compatible, adjust +** range of previous instruction instead of emitting a new one. (For +** instance, 'local a; local b' will generate a single opcode.) +*/ +void luaK_nil (FuncState *fs, int from, int n) { + Instruction *previous; + int l = from + n - 1; /* last register to set nil */ + if (fs->pc > fs->lasttarget) { /* no jumps to current position? */ + previous = &fs->f->code[fs->pc-1]; + if (GET_OPCODE(*previous) == OP_LOADNIL) { /* previous is LOADNIL? */ + int pfrom = GETARG_A(*previous); /* get previous range */ + int pl = pfrom + GETARG_B(*previous); + if ((pfrom <= from && from <= pl + 1) || + (from <= pfrom && pfrom <= l + 1)) { /* can connect both? */ + if (pfrom < from) from = pfrom; /* from = min(from, pfrom) */ + if (pl > l) l = pl; /* l = max(l, pl) */ + SETARG_A(*previous, from); + SETARG_B(*previous, l - from); + return; + } + } /* else go through */ + } + luaK_codeABC(fs, OP_LOADNIL, from, n - 1, 0); /* else no optimization */ +} + + +/* +** Gets the destination address of a jump instruction. Used to traverse +** a list of jumps. +*/ +static int getjump (FuncState *fs, int pc) { + int offset = GETARG_sBx(fs->f->code[pc]); + if (offset == NO_JUMP) /* point to itself represents end of list */ + return NO_JUMP; /* end of list */ + else + return (pc+1)+offset; /* turn offset into absolute position */ +} + + +/* +** Fix jump instruction at position 'pc' to jump to 'dest'. +** (Jump addresses are relative in Lua) +*/ +static void fixjump (FuncState *fs, int pc, int dest) { + Instruction *jmp = &fs->f->code[pc]; + int offset = dest - (pc + 1); + lua_assert(dest != NO_JUMP); + if (abs(offset) > MAXARG_sBx) + luaX_syntaxerror(fs->ls, "control structure too long"); + SETARG_sBx(*jmp, offset); +} + + +/* +** Concatenate jump-list 'l2' into jump-list 'l1' +*/ +void luaK_concat (FuncState *fs, int *l1, int l2) { + if (l2 == NO_JUMP) return; /* nothing to concatenate? */ + else if (*l1 == NO_JUMP) /* no original list? */ + *l1 = l2; /* 'l1' points to 'l2' */ + else { + int list = *l1; + int next; + while ((next = getjump(fs, list)) != NO_JUMP) /* find last element */ + list = next; + fixjump(fs, list, l2); /* last element links to 'l2' */ + } +} + + +/* +** Create a jump instruction and return its position, so its destination +** can be fixed later (with 'fixjump'). If there are jumps to +** this position (kept in 'jpc'), link them all together so that +** 'patchlistaux' will fix all them directly to the final destination. +*/ +int luaK_jump (FuncState *fs) { + int jpc = fs->jpc; /* save list of jumps to here */ + int j; + fs->jpc = NO_JUMP; /* no more jumps to here */ + j = luaK_codeAsBx(fs, OP_JMP, 0, NO_JUMP); + luaK_concat(fs, &j, jpc); /* keep them on hold */ + return j; +} + + +/* +** Code a 'return' instruction +*/ +void luaK_ret (FuncState *fs, int first, int nret) { + luaK_codeABC(fs, OP_RETURN, first, nret+1, 0); +} + + +/* +** Code a "conditional jump", that is, a test or comparison opcode +** followed by a jump. Return jump position. +*/ +static int condjump (FuncState *fs, OpCode op, int A, int B, int C) { + luaK_codeABC(fs, op, A, B, C); + return luaK_jump(fs); +} + + +/* +** returns current 'pc' and marks it as a jump target (to avoid wrong +** optimizations with consecutive instructions not in the same basic block). +*/ +int luaK_getlabel (FuncState *fs) { + fs->lasttarget = fs->pc; + return fs->pc; +} + + +/* +** Returns the position of the instruction "controlling" a given +** jump (that is, its condition), or the jump itself if it is +** unconditional. +*/ +static Instruction *getjumpcontrol (FuncState *fs, int pc) { + Instruction *pi = &fs->f->code[pc]; + if (pc >= 1 && testTMode(GET_OPCODE(*(pi-1)))) + return pi-1; + else + return pi; +} + + +/* +** Patch destination register for a TESTSET instruction. +** If instruction in position 'node' is not a TESTSET, return 0 ("fails"). +** Otherwise, if 'reg' is not 'NO_REG', set it as the destination +** register. Otherwise, change instruction to a simple 'TEST' (produces +** no register value) +*/ +static int patchtestreg (FuncState *fs, int node, int reg) { + Instruction *i = getjumpcontrol(fs, node); + if (GET_OPCODE(*i) != OP_TESTSET) + return 0; /* cannot patch other instructions */ + if (reg != NO_REG && reg != GETARG_B(*i)) + SETARG_A(*i, reg); + else { + /* no register to put value or register already has the value; + change instruction to simple test */ + *i = CREATE_ABC(OP_TEST, GETARG_B(*i), 0, GETARG_C(*i)); + } + return 1; +} + + +/* +** Traverse a list of tests ensuring no one produces a value +*/ +static void removevalues (FuncState *fs, int list) { + for (; list != NO_JUMP; list = getjump(fs, list)) + patchtestreg(fs, list, NO_REG); +} + + +/* +** Traverse a list of tests, patching their destination address and +** registers: tests producing values jump to 'vtarget' (and put their +** values in 'reg'), other tests jump to 'dtarget'. +*/ +static void patchlistaux (FuncState *fs, int list, int vtarget, int reg, + int dtarget) { + while (list != NO_JUMP) { + int next = getjump(fs, list); + if (patchtestreg(fs, list, reg)) + fixjump(fs, list, vtarget); + else + fixjump(fs, list, dtarget); /* jump to default target */ + list = next; + } +} + + +/* +** Ensure all pending jumps to current position are fixed (jumping +** to current position with no values) and reset list of pending +** jumps +*/ +static void dischargejpc (FuncState *fs) { + patchlistaux(fs, fs->jpc, fs->pc, NO_REG, fs->pc); + fs->jpc = NO_JUMP; +} + + +/* +** Add elements in 'list' to list of pending jumps to "here" +** (current position) +*/ +void luaK_patchtohere (FuncState *fs, int list) { + luaK_getlabel(fs); /* mark "here" as a jump target */ + luaK_concat(fs, &fs->jpc, list); +} + + +/* +** Path all jumps in 'list' to jump to 'target'. +** (The assert means that we cannot fix a jump to a forward address +** because we only know addresses once code is generated.) +*/ +void luaK_patchlist (FuncState *fs, int list, int target) { + if (target == fs->pc) /* 'target' is current position? */ + luaK_patchtohere(fs, list); /* add list to pending jumps */ + else { + lua_assert(target < fs->pc); + patchlistaux(fs, list, target, NO_REG, target); + } +} + + +/* +** Path all jumps in 'list' to close upvalues up to given 'level' +** (The assertion checks that jumps either were closing nothing +** or were closing higher levels, from inner blocks.) +*/ +void luaK_patchclose (FuncState *fs, int list, int level) { + level++; /* argument is +1 to reserve 0 as non-op */ + for (; list != NO_JUMP; list = getjump(fs, list)) { + lua_assert(GET_OPCODE(fs->f->code[list]) == OP_JMP && + (GETARG_A(fs->f->code[list]) == 0 || + GETARG_A(fs->f->code[list]) >= level)); + SETARG_A(fs->f->code[list], level); + } +} + + +/* +** Emit instruction 'i', checking for array sizes and saving also its +** line information. Return 'i' position. +*/ +static int luaK_code (FuncState *fs, Instruction i) { + Proto *f = fs->f; + dischargejpc(fs); /* 'pc' will change */ + /* put new instruction in code array */ + luaM_growvector(fs->ls->L, f->code, fs->pc, f->sizecode, Instruction, + MAX_INT, "opcodes"); + f->code[fs->pc] = i; + /* save corresponding line information */ + luaM_growvector(fs->ls->L, f->lineinfo, fs->pc, f->sizelineinfo, int, + MAX_INT, "opcodes"); + f->lineinfo[fs->pc] = fs->ls->lastline; + return fs->pc++; +} + + +/* +** Format and emit an 'iABC' instruction. (Assertions check consistency +** of parameters versus opcode.) +*/ +int luaK_codeABC (FuncState *fs, OpCode o, int a, int b, int c) { + lua_assert(getOpMode(o) == iABC); + lua_assert(getBMode(o) != OpArgN || b == 0); + lua_assert(getCMode(o) != OpArgN || c == 0); + lua_assert(a <= MAXARG_A && b <= MAXARG_B && c <= MAXARG_C); + return luaK_code(fs, CREATE_ABC(o, a, b, c)); +} + + +/* +** Format and emit an 'iABx' instruction. +*/ +int luaK_codeABx (FuncState *fs, OpCode o, int a, unsigned int bc) { + lua_assert(getOpMode(o) == iABx || getOpMode(o) == iAsBx); + lua_assert(getCMode(o) == OpArgN); + lua_assert(a <= MAXARG_A && bc <= MAXARG_Bx); + return luaK_code(fs, CREATE_ABx(o, a, bc)); +} + + +/* +** Emit an "extra argument" instruction (format 'iAx') +*/ +static int codeextraarg (FuncState *fs, int a) { + lua_assert(a <= MAXARG_Ax); + return luaK_code(fs, CREATE_Ax(OP_EXTRAARG, a)); +} + + +/* +** Emit a "load constant" instruction, using either 'OP_LOADK' +** (if constant index 'k' fits in 18 bits) or an 'OP_LOADKX' +** instruction with "extra argument". +*/ +int luaK_codek (FuncState *fs, int reg, int k) { + if (k <= MAXARG_Bx) + return luaK_codeABx(fs, OP_LOADK, reg, k); + else { + int p = luaK_codeABx(fs, OP_LOADKX, reg, 0); + codeextraarg(fs, k); + return p; + } +} + + +/* +** Check register-stack level, keeping track of its maximum size +** in field 'maxstacksize' +*/ +void luaK_checkstack (FuncState *fs, int n) { + int newstack = fs->freereg + n; + if (newstack > fs->f->maxstacksize) { + if (newstack >= MAXREGS) + luaX_syntaxerror(fs->ls, + "function or expression needs too many registers"); + fs->f->maxstacksize = cast_byte(newstack); + } +} + + +/* +** Reserve 'n' registers in register stack +*/ +void luaK_reserveregs (FuncState *fs, int n) { + luaK_checkstack(fs, n); + fs->freereg += n; +} + + +/* +** Free register 'reg', if it is neither a constant index nor +** a local variable. +) +*/ +static void freereg (FuncState *fs, int reg) { + if (!ISK(reg) && reg >= fs->nactvar) { + fs->freereg--; + lua_assert(reg == fs->freereg); + } +} + + +/* +** Free register used by expression 'e' (if any) +*/ +static void freeexp (FuncState *fs, expdesc *e) { + if (e->k == VNONRELOC) + freereg(fs, e->u.info); +} + + +/* +** Free registers used by expressions 'e1' and 'e2' (if any) in proper +** order. +*/ +static void freeexps (FuncState *fs, expdesc *e1, expdesc *e2) { + int r1 = (e1->k == VNONRELOC) ? e1->u.info : -1; + int r2 = (e2->k == VNONRELOC) ? e2->u.info : -1; + if (r1 > r2) { + freereg(fs, r1); + freereg(fs, r2); + } + else { + freereg(fs, r2); + freereg(fs, r1); + } +} + + +/* +** Add constant 'v' to prototype's list of constants (field 'k'). +** Use scanner's table to cache position of constants in constant list +** and try to reuse constants. Because some values should not be used +** as keys (nil cannot be a key, integer keys can collapse with float +** keys), the caller must provide a useful 'key' for indexing the cache. +*/ +static int addk (FuncState *fs, TValue *key, TValue *v) { + lua_State *L = fs->ls->L; + Proto *f = fs->f; + TValue *idx = luaH_set(L, fs->ls->h, key); /* index scanner table */ + int k, oldsize; + if (ttisinteger(idx)) { /* is there an index there? */ + k = cast_int(ivalue(idx)); + /* correct value? (warning: must distinguish floats from integers!) */ + if (k < fs->nk && ttype(&f->k[k]) == ttype(v) && + luaV_rawequalobj(&f->k[k], v)) + return k; /* reuse index */ + } + /* constant not found; create a new entry */ + oldsize = f->sizek; + k = fs->nk; + /* numerical value does not need GC barrier; + table has no metatable, so it does not need to invalidate cache */ + setivalue(idx, k); + luaM_growvector(L, f->k, k, f->sizek, TValue, MAXARG_Ax, "constants"); + while (oldsize < f->sizek) setnilvalue(&f->k[oldsize++]); + setobj(L, &f->k[k], v); + fs->nk++; + luaC_barrier(L, f, v); + return k; +} + + +/* +** Add a string to list of constants and return its index. +*/ +int luaK_stringK (FuncState *fs, TString *s) { + TValue o; + setsvalue(fs->ls->L, &o, s); + return addk(fs, &o, &o); /* use string itself as key */ +} + + +/* +** Add an integer to list of constants and return its index. +** Integers use userdata as keys to avoid collision with floats with +** same value; conversion to 'void*' is used only for hashing, so there +** are no "precision" problems. +*/ +int luaK_intK (FuncState *fs, lua_Integer n) { + TValue k, o; + setpvalue(&k, cast(void*, cast(size_t, n))); + setivalue(&o, n); + return addk(fs, &k, &o); +} + +/* +** Add a float to list of constants and return its index. +*/ +static int luaK_numberK (FuncState *fs, lua_Number r) { + TValue o; + setfltvalue(&o, r); + return addk(fs, &o, &o); /* use number itself as key */ +} + + +/* +** Add a boolean to list of constants and return its index. +*/ +static int boolK (FuncState *fs, int b) { + TValue o; + setbvalue(&o, b); + return addk(fs, &o, &o); /* use boolean itself as key */ +} + + +/* +** Add nil to list of constants and return its index. +*/ +static int nilK (FuncState *fs) { + TValue k, v; + setnilvalue(&v); + /* cannot use nil as key; instead use table itself to represent nil */ + sethvalue(fs->ls->L, &k, fs->ls->h); + return addk(fs, &k, &v); +} + + +/* +** Fix an expression to return the number of results 'nresults'. +** Either 'e' is a multi-ret expression (function call or vararg) +** or 'nresults' is LUA_MULTRET (as any expression can satisfy that). +*/ +void luaK_setreturns (FuncState *fs, expdesc *e, int nresults) { + if (e->k == VCALL) { /* expression is an open function call? */ + SETARG_C(getinstruction(fs, e), nresults + 1); + } + else if (e->k == VVARARG) { + Instruction *pc = &getinstruction(fs, e); + SETARG_B(*pc, nresults + 1); + SETARG_A(*pc, fs->freereg); + luaK_reserveregs(fs, 1); + } + else lua_assert(nresults == LUA_MULTRET); +} + + +/* +** Fix an expression to return one result. +** If expression is not a multi-ret expression (function call or +** vararg), it already returns one result, so nothing needs to be done. +** Function calls become VNONRELOC expressions (as its result comes +** fixed in the base register of the call), while vararg expressions +** become VRELOCABLE (as OP_VARARG puts its results where it wants). +** (Calls are created returning one result, so that does not need +** to be fixed.) +*/ +void luaK_setoneret (FuncState *fs, expdesc *e) { + if (e->k == VCALL) { /* expression is an open function call? */ + /* already returns 1 value */ + lua_assert(GETARG_C(getinstruction(fs, e)) == 2); + e->k = VNONRELOC; /* result has fixed position */ + e->u.info = GETARG_A(getinstruction(fs, e)); + } + else if (e->k == VVARARG) { + SETARG_B(getinstruction(fs, e), 2); + e->k = VRELOCABLE; /* can relocate its simple result */ + } +} + + +/* +** Ensure that expression 'e' is not a variable. +*/ +void luaK_dischargevars (FuncState *fs, expdesc *e) { + switch (e->k) { + case VLOCAL: { /* already in a register */ + e->k = VNONRELOC; /* becomes a non-relocatable value */ + break; + } + case VUPVAL: { /* move value to some (pending) register */ + e->u.info = luaK_codeABC(fs, OP_GETUPVAL, 0, e->u.info, 0); + e->k = VRELOCABLE; + break; + } + case VINDEXED: { + OpCode op; + freereg(fs, e->u.ind.idx); + if (e->u.ind.vt == VLOCAL) { /* is 't' in a register? */ + freereg(fs, e->u.ind.t); + op = OP_GETTABLE; + } + else { + lua_assert(e->u.ind.vt == VUPVAL); + op = OP_GETTABUP; /* 't' is in an upvalue */ + } + e->u.info = luaK_codeABC(fs, op, 0, e->u.ind.t, e->u.ind.idx); + e->k = VRELOCABLE; + break; + } + case VVARARG: case VCALL: { + luaK_setoneret(fs, e); + break; + } + default: break; /* there is one value available (somewhere) */ + } +} + + +/* +** Ensures expression value is in register 'reg' (and therefore +** 'e' will become a non-relocatable expression). +*/ +static void discharge2reg (FuncState *fs, expdesc *e, int reg) { + luaK_dischargevars(fs, e); + switch (e->k) { + case VNIL: { + luaK_nil(fs, reg, 1); + break; + } + case VFALSE: case VTRUE: { + luaK_codeABC(fs, OP_LOADBOOL, reg, e->k == VTRUE, 0); + break; + } + case VK: { + luaK_codek(fs, reg, e->u.info); + break; + } + case VKFLT: { + luaK_codek(fs, reg, luaK_numberK(fs, e->u.nval)); + break; + } + case VKINT: { + luaK_codek(fs, reg, luaK_intK(fs, e->u.ival)); + break; + } + case VRELOCABLE: { + Instruction *pc = &getinstruction(fs, e); + SETARG_A(*pc, reg); /* instruction will put result in 'reg' */ + break; + } + case VNONRELOC: { + if (reg != e->u.info) + luaK_codeABC(fs, OP_MOVE, reg, e->u.info, 0); + break; + } + default: { + lua_assert(e->k == VJMP); + return; /* nothing to do... */ + } + } + e->u.info = reg; + e->k = VNONRELOC; +} + + +/* +** Ensures expression value is in any register. +*/ +static void discharge2anyreg (FuncState *fs, expdesc *e) { + if (e->k != VNONRELOC) { /* no fixed register yet? */ + luaK_reserveregs(fs, 1); /* get a register */ + discharge2reg(fs, e, fs->freereg-1); /* put value there */ + } +} + + +static int code_loadbool (FuncState *fs, int A, int b, int jump) { + luaK_getlabel(fs); /* those instructions may be jump targets */ + return luaK_codeABC(fs, OP_LOADBOOL, A, b, jump); +} + + +/* +** check whether list has any jump that do not produce a value +** or produce an inverted value +*/ +static int need_value (FuncState *fs, int list) { + for (; list != NO_JUMP; list = getjump(fs, list)) { + Instruction i = *getjumpcontrol(fs, list); + if (GET_OPCODE(i) != OP_TESTSET) return 1; + } + return 0; /* not found */ +} + + +/* +** Ensures final expression result (including results from its jump +** lists) is in register 'reg'. +** If expression has jumps, need to patch these jumps either to +** its final position or to "load" instructions (for those tests +** that do not produce values). +*/ +static void exp2reg (FuncState *fs, expdesc *e, int reg) { + discharge2reg(fs, e, reg); + if (e->k == VJMP) /* expression itself is a test? */ + luaK_concat(fs, &e->t, e->u.info); /* put this jump in 't' list */ + if (hasjumps(e)) { + int final; /* position after whole expression */ + int p_f = NO_JUMP; /* position of an eventual LOAD false */ + int p_t = NO_JUMP; /* position of an eventual LOAD true */ + if (need_value(fs, e->t) || need_value(fs, e->f)) { + int fj = (e->k == VJMP) ? NO_JUMP : luaK_jump(fs); + p_f = code_loadbool(fs, reg, 0, 1); + p_t = code_loadbool(fs, reg, 1, 0); + luaK_patchtohere(fs, fj); + } + final = luaK_getlabel(fs); + patchlistaux(fs, e->f, final, reg, p_f); + patchlistaux(fs, e->t, final, reg, p_t); + } + e->f = e->t = NO_JUMP; + e->u.info = reg; + e->k = VNONRELOC; +} + + +/* +** Ensures final expression result (including results from its jump +** lists) is in next available register. +*/ +void luaK_exp2nextreg (FuncState *fs, expdesc *e) { + luaK_dischargevars(fs, e); + freeexp(fs, e); + luaK_reserveregs(fs, 1); + exp2reg(fs, e, fs->freereg - 1); +} + + +/* +** Ensures final expression result (including results from its jump +** lists) is in some (any) register and return that register. +*/ +int luaK_exp2anyreg (FuncState *fs, expdesc *e) { + luaK_dischargevars(fs, e); + if (e->k == VNONRELOC) { /* expression already has a register? */ + if (!hasjumps(e)) /* no jumps? */ + return e->u.info; /* result is already in a register */ + if (e->u.info >= fs->nactvar) { /* reg. is not a local? */ + exp2reg(fs, e, e->u.info); /* put final result in it */ + return e->u.info; + } + } + luaK_exp2nextreg(fs, e); /* otherwise, use next available register */ + return e->u.info; +} + + +/* +** Ensures final expression result is either in a register or in an +** upvalue. +*/ +void luaK_exp2anyregup (FuncState *fs, expdesc *e) { + if (e->k != VUPVAL || hasjumps(e)) + luaK_exp2anyreg(fs, e); +} + + +/* +** Ensures final expression result is either in a register or it is +** a constant. +*/ +void luaK_exp2val (FuncState *fs, expdesc *e) { + if (hasjumps(e)) + luaK_exp2anyreg(fs, e); + else + luaK_dischargevars(fs, e); +} + + +/* +** Ensures final expression result is in a valid R/K index +** (that is, it is either in a register or in 'k' with an index +** in the range of R/K indices). +** Returns R/K index. +*/ +int luaK_exp2RK (FuncState *fs, expdesc *e) { + luaK_exp2val(fs, e); + switch (e->k) { /* move constants to 'k' */ + case VTRUE: e->u.info = boolK(fs, 1); goto vk; + case VFALSE: e->u.info = boolK(fs, 0); goto vk; + case VNIL: e->u.info = nilK(fs); goto vk; + case VKINT: e->u.info = luaK_intK(fs, e->u.ival); goto vk; + case VKFLT: e->u.info = luaK_numberK(fs, e->u.nval); goto vk; + case VK: + vk: + e->k = VK; + if (e->u.info <= MAXINDEXRK) /* constant fits in 'argC'? */ + return RKASK(e->u.info); + else break; + default: break; + } + /* not a constant in the right range: put it in a register */ + return luaK_exp2anyreg(fs, e); +} + + +/* +** Generate code to store result of expression 'ex' into variable 'var'. +*/ +void luaK_storevar (FuncState *fs, expdesc *var, expdesc *ex) { + switch (var->k) { + case VLOCAL: { + freeexp(fs, ex); + exp2reg(fs, ex, var->u.info); /* compute 'ex' into proper place */ + return; + } + case VUPVAL: { + int e = luaK_exp2anyreg(fs, ex); + luaK_codeABC(fs, OP_SETUPVAL, e, var->u.info, 0); + break; + } + case VINDEXED: { + OpCode op = (var->u.ind.vt == VLOCAL) ? OP_SETTABLE : OP_SETTABUP; + int e = luaK_exp2RK(fs, ex); + luaK_codeABC(fs, op, var->u.ind.t, var->u.ind.idx, e); + break; + } + default: lua_assert(0); /* invalid var kind to store */ + } + freeexp(fs, ex); +} + + +/* +** Emit SELF instruction (convert expression 'e' into 'e:key(e,'). +*/ +void luaK_self (FuncState *fs, expdesc *e, expdesc *key) { + int ereg; + luaK_exp2anyreg(fs, e); + ereg = e->u.info; /* register where 'e' was placed */ + freeexp(fs, e); + e->u.info = fs->freereg; /* base register for op_self */ + e->k = VNONRELOC; /* self expression has a fixed register */ + luaK_reserveregs(fs, 2); /* function and 'self' produced by op_self */ + luaK_codeABC(fs, OP_SELF, e->u.info, ereg, luaK_exp2RK(fs, key)); + freeexp(fs, key); +} + + +/* +** Negate condition 'e' (where 'e' is a comparison). +*/ +static void negatecondition (FuncState *fs, expdesc *e) { + Instruction *pc = getjumpcontrol(fs, e->u.info); + lua_assert(testTMode(GET_OPCODE(*pc)) && GET_OPCODE(*pc) != OP_TESTSET && + GET_OPCODE(*pc) != OP_TEST); + SETARG_A(*pc, !(GETARG_A(*pc))); +} + + +/* +** Emit instruction to jump if 'e' is 'cond' (that is, if 'cond' +** is true, code will jump if 'e' is true.) Return jump position. +** Optimize when 'e' is 'not' something, inverting the condition +** and removing the 'not'. +*/ +static int jumponcond (FuncState *fs, expdesc *e, int cond) { + if (e->k == VRELOCABLE) { + Instruction ie = getinstruction(fs, e); + if (GET_OPCODE(ie) == OP_NOT) { + fs->pc--; /* remove previous OP_NOT */ + return condjump(fs, OP_TEST, GETARG_B(ie), 0, !cond); + } + /* else go through */ + } + discharge2anyreg(fs, e); + freeexp(fs, e); + return condjump(fs, OP_TESTSET, NO_REG, e->u.info, cond); +} + + +/* +** Emit code to go through if 'e' is true, jump otherwise. +*/ +void luaK_goiftrue (FuncState *fs, expdesc *e) { + int pc; /* pc of new jump */ + luaK_dischargevars(fs, e); + switch (e->k) { + case VJMP: { /* condition? */ + negatecondition(fs, e); /* jump when it is false */ + pc = e->u.info; /* save jump position */ + break; + } + case VK: case VKFLT: case VKINT: case VTRUE: { + pc = NO_JUMP; /* always true; do nothing */ + break; + } + default: { + pc = jumponcond(fs, e, 0); /* jump when false */ + break; + } + } + luaK_concat(fs, &e->f, pc); /* insert new jump in false list */ + luaK_patchtohere(fs, e->t); /* true list jumps to here (to go through) */ + e->t = NO_JUMP; +} + + +/* +** Emit code to go through if 'e' is false, jump otherwise. +*/ +void luaK_goiffalse (FuncState *fs, expdesc *e) { + int pc; /* pc of new jump */ + luaK_dischargevars(fs, e); + switch (e->k) { + case VJMP: { + pc = e->u.info; /* already jump if true */ + break; + } + case VNIL: case VFALSE: { + pc = NO_JUMP; /* always false; do nothing */ + break; + } + default: { + pc = jumponcond(fs, e, 1); /* jump if true */ + break; + } + } + luaK_concat(fs, &e->t, pc); /* insert new jump in 't' list */ + luaK_patchtohere(fs, e->f); /* false list jumps to here (to go through) */ + e->f = NO_JUMP; +} + + +/* +** Code 'not e', doing constant folding. +*/ +static void codenot (FuncState *fs, expdesc *e) { + luaK_dischargevars(fs, e); + switch (e->k) { + case VNIL: case VFALSE: { + e->k = VTRUE; /* true == not nil == not false */ + break; + } + case VK: case VKFLT: case VKINT: case VTRUE: { + e->k = VFALSE; /* false == not "x" == not 0.5 == not 1 == not true */ + break; + } + case VJMP: { + negatecondition(fs, e); + break; + } + case VRELOCABLE: + case VNONRELOC: { + discharge2anyreg(fs, e); + freeexp(fs, e); + e->u.info = luaK_codeABC(fs, OP_NOT, 0, e->u.info, 0); + e->k = VRELOCABLE; + break; + } + default: lua_assert(0); /* cannot happen */ + } + /* interchange true and false lists */ + { int temp = e->f; e->f = e->t; e->t = temp; } + removevalues(fs, e->f); /* values are useless when negated */ + removevalues(fs, e->t); +} + + +/* +** Create expression 't[k]'. 't' must have its final result already in a +** register or upvalue. +*/ +void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k) { + lua_assert(!hasjumps(t) && (vkisinreg(t->k) || t->k == VUPVAL)); + t->u.ind.t = t->u.info; /* register or upvalue index */ + t->u.ind.idx = luaK_exp2RK(fs, k); /* R/K index for key */ + t->u.ind.vt = (t->k == VUPVAL) ? VUPVAL : VLOCAL; + t->k = VINDEXED; +} + + +/* +** Return false if folding can raise an error. +** Bitwise operations need operands convertible to integers; division +** operations cannot have 0 as divisor. +*/ +static int validop (int op, TValue *v1, TValue *v2) { + switch (op) { + case LUA_OPBAND: case LUA_OPBOR: case LUA_OPBXOR: + case LUA_OPSHL: case LUA_OPSHR: case LUA_OPBNOT: { /* conversion errors */ + lua_Integer i; + return (tointeger(v1, &i) && tointeger(v2, &i)); + } + case LUA_OPDIV: case LUA_OPIDIV: case LUA_OPMOD: /* division by 0 */ + return (nvalue(v2) != 0); + default: return 1; /* everything else is valid */ + } +} + + +/* +** Try to "constant-fold" an operation; return 1 iff successful. +** (In this case, 'e1' has the final result.) +*/ +static int constfolding (FuncState *fs, int op, expdesc *e1, + const expdesc *e2) { + TValue v1, v2, res; + if (!tonumeral(e1, &v1) || !tonumeral(e2, &v2) || !validop(op, &v1, &v2)) + return 0; /* non-numeric operands or not safe to fold */ + luaO_arith(fs->ls->L, op, &v1, &v2, &res); /* does operation */ + if (ttisinteger(&res)) { + e1->k = VKINT; + e1->u.ival = ivalue(&res); + } + else { /* folds neither NaN nor 0.0 (to avoid problems with -0.0) */ + lua_Number n = fltvalue(&res); + if (luai_numisnan(n) || n == 0) + return 0; + e1->k = VKFLT; + e1->u.nval = n; + } + return 1; +} + + +/* +** Emit code for unary expressions that "produce values" +** (everything but 'not'). +** Expression to produce final result will be encoded in 'e'. +*/ +static void codeunexpval (FuncState *fs, OpCode op, expdesc *e, int line) { + int r = luaK_exp2anyreg(fs, e); /* opcodes operate only on registers */ + freeexp(fs, e); + e->u.info = luaK_codeABC(fs, op, 0, r, 0); /* generate opcode */ + e->k = VRELOCABLE; /* all those operations are relocatable */ + luaK_fixline(fs, line); +} + + +/* +** Emit code for binary expressions that "produce values" +** (everything but logical operators 'and'/'or' and comparison +** operators). +** Expression to produce final result will be encoded in 'e1'. +** Because 'luaK_exp2RK' can free registers, its calls must be +** in "stack order" (that is, first on 'e2', which may have more +** recent registers to be released). +*/ +static void codebinexpval (FuncState *fs, OpCode op, + expdesc *e1, expdesc *e2, int line) { + int rk2 = luaK_exp2RK(fs, e2); /* both operands are "RK" */ + int rk1 = luaK_exp2RK(fs, e1); + freeexps(fs, e1, e2); + e1->u.info = luaK_codeABC(fs, op, 0, rk1, rk2); /* generate opcode */ + e1->k = VRELOCABLE; /* all those operations are relocatable */ + luaK_fixline(fs, line); +} + + +/* +** Emit code for comparisons. +** 'e1' was already put in R/K form by 'luaK_infix'. +*/ +static void codecomp (FuncState *fs, BinOpr opr, expdesc *e1, expdesc *e2) { + int rk1 = (e1->k == VK) ? RKASK(e1->u.info) + : check_exp(e1->k == VNONRELOC, e1->u.info); + int rk2 = luaK_exp2RK(fs, e2); + freeexps(fs, e1, e2); + switch (opr) { + case OPR_NE: { /* '(a ~= b)' ==> 'not (a == b)' */ + e1->u.info = condjump(fs, OP_EQ, 0, rk1, rk2); + break; + } + case OPR_GT: case OPR_GE: { + /* '(a > b)' ==> '(b < a)'; '(a >= b)' ==> '(b <= a)' */ + OpCode op = cast(OpCode, (opr - OPR_NE) + OP_EQ); + e1->u.info = condjump(fs, op, 1, rk2, rk1); /* invert operands */ + break; + } + default: { /* '==', '<', '<=' use their own opcodes */ + OpCode op = cast(OpCode, (opr - OPR_EQ) + OP_EQ); + e1->u.info = condjump(fs, op, 1, rk1, rk2); + break; + } + } + e1->k = VJMP; +} + + +/* +** Aplly prefix operation 'op' to expression 'e'. +*/ +void luaK_prefix (FuncState *fs, UnOpr op, expdesc *e, int line) { + static const expdesc ef = {VKINT, {0}, NO_JUMP, NO_JUMP}; + switch (op) { + case OPR_MINUS: case OPR_BNOT: /* use 'ef' as fake 2nd operand */ + if (constfolding(fs, op + LUA_OPUNM, e, &ef)) + break; + /* FALLTHROUGH */ + case OPR_LEN: + codeunexpval(fs, cast(OpCode, op + OP_UNM), e, line); + break; + case OPR_NOT: codenot(fs, e); break; + default: lua_assert(0); + } +} + + +/* +** Process 1st operand 'v' of binary operation 'op' before reading +** 2nd operand. +*/ +void luaK_infix (FuncState *fs, BinOpr op, expdesc *v) { + switch (op) { + case OPR_AND: { + luaK_goiftrue(fs, v); /* go ahead only if 'v' is true */ + break; + } + case OPR_OR: { + luaK_goiffalse(fs, v); /* go ahead only if 'v' is false */ + break; + } + case OPR_CONCAT: { + luaK_exp2nextreg(fs, v); /* operand must be on the 'stack' */ + break; + } + case OPR_ADD: case OPR_SUB: + case OPR_MUL: case OPR_DIV: case OPR_IDIV: + case OPR_MOD: case OPR_POW: + case OPR_BAND: case OPR_BOR: case OPR_BXOR: + case OPR_SHL: case OPR_SHR: { + if (!tonumeral(v, NULL)) + luaK_exp2RK(fs, v); + /* else keep numeral, which may be folded with 2nd operand */ + break; + } + default: { + luaK_exp2RK(fs, v); + break; + } + } +} + + +/* +** Finalize code for binary operation, after reading 2nd operand. +** For '(a .. b .. c)' (which is '(a .. (b .. c))', because +** concatenation is right associative), merge second CONCAT into first +** one. +*/ +void luaK_posfix (FuncState *fs, BinOpr op, + expdesc *e1, expdesc *e2, int line) { + switch (op) { + case OPR_AND: { + lua_assert(e1->t == NO_JUMP); /* list closed by 'luK_infix' */ + luaK_dischargevars(fs, e2); + luaK_concat(fs, &e2->f, e1->f); + *e1 = *e2; + break; + } + case OPR_OR: { + lua_assert(e1->f == NO_JUMP); /* list closed by 'luK_infix' */ + luaK_dischargevars(fs, e2); + luaK_concat(fs, &e2->t, e1->t); + *e1 = *e2; + break; + } + case OPR_CONCAT: { + luaK_exp2val(fs, e2); + if (e2->k == VRELOCABLE && + GET_OPCODE(getinstruction(fs, e2)) == OP_CONCAT) { + lua_assert(e1->u.info == GETARG_B(getinstruction(fs, e2))-1); + freeexp(fs, e1); + SETARG_B(getinstruction(fs, e2), e1->u.info); + e1->k = VRELOCABLE; e1->u.info = e2->u.info; + } + else { + luaK_exp2nextreg(fs, e2); /* operand must be on the 'stack' */ + codebinexpval(fs, OP_CONCAT, e1, e2, line); + } + break; + } + case OPR_ADD: case OPR_SUB: case OPR_MUL: case OPR_DIV: + case OPR_IDIV: case OPR_MOD: case OPR_POW: + case OPR_BAND: case OPR_BOR: case OPR_BXOR: + case OPR_SHL: case OPR_SHR: { + if (!constfolding(fs, op + LUA_OPADD, e1, e2)) + codebinexpval(fs, cast(OpCode, op + OP_ADD), e1, e2, line); + break; + } + case OPR_EQ: case OPR_LT: case OPR_LE: + case OPR_NE: case OPR_GT: case OPR_GE: { + codecomp(fs, op, e1, e2); + break; + } + default: lua_assert(0); + } +} + + +/* +** Change line information associated with current position. +*/ +void luaK_fixline (FuncState *fs, int line) { + fs->f->lineinfo[fs->pc - 1] = line; +} + + +/* +** Emit a SETLIST instruction. +** 'base' is register that keeps table; +** 'nelems' is #table plus those to be stored now; +** 'tostore' is number of values (in registers 'base + 1',...) to add to +** table (or LUA_MULTRET to add up to stack top). +*/ +void luaK_setlist (FuncState *fs, int base, int nelems, int tostore) { + int c = (nelems - 1)/LFIELDS_PER_FLUSH + 1; + int b = (tostore == LUA_MULTRET) ? 0 : tostore; + lua_assert(tostore != 0 && tostore <= LFIELDS_PER_FLUSH); + if (c <= MAXARG_C) + luaK_codeABC(fs, OP_SETLIST, base, b, c); + else if (c <= MAXARG_Ax) { + luaK_codeABC(fs, OP_SETLIST, base, b, 0); + codeextraarg(fs, c); + } + else + luaX_syntaxerror(fs->ls, "constructor too long"); + fs->freereg = base + 1; /* free registers with list values */ +} + diff --git a/deps/rcheevos/test/lua/src/lcode.h b/deps/rcheevos/test/lua/src/lcode.h new file mode 100644 index 0000000000..cd306d573a --- /dev/null +++ b/deps/rcheevos/test/lua/src/lcode.h @@ -0,0 +1,88 @@ +/* +** $Id: lcode.h,v 1.64 2016/01/05 16:22:37 roberto Exp $ +** Code generator for Lua +** See Copyright Notice in lua.h +*/ + +#ifndef lcode_h +#define lcode_h + +#include "llex.h" +#include "lobject.h" +#include "lopcodes.h" +#include "lparser.h" + + +/* +** Marks the end of a patch list. It is an invalid value both as an absolute +** address, and as a list link (would link an element to itself). +*/ +#define NO_JUMP (-1) + + +/* +** grep "ORDER OPR" if you change these enums (ORDER OP) +*/ +typedef enum BinOpr { + OPR_ADD, OPR_SUB, OPR_MUL, OPR_MOD, OPR_POW, + OPR_DIV, + OPR_IDIV, + OPR_BAND, OPR_BOR, OPR_BXOR, + OPR_SHL, OPR_SHR, + OPR_CONCAT, + OPR_EQ, OPR_LT, OPR_LE, + OPR_NE, OPR_GT, OPR_GE, + OPR_AND, OPR_OR, + OPR_NOBINOPR +} BinOpr; + + +typedef enum UnOpr { OPR_MINUS, OPR_BNOT, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr; + + +/* get (pointer to) instruction of given 'expdesc' */ +#define getinstruction(fs,e) ((fs)->f->code[(e)->u.info]) + +#define luaK_codeAsBx(fs,o,A,sBx) luaK_codeABx(fs,o,A,(sBx)+MAXARG_sBx) + +#define luaK_setmultret(fs,e) luaK_setreturns(fs, e, LUA_MULTRET) + +#define luaK_jumpto(fs,t) luaK_patchlist(fs, luaK_jump(fs), t) + +LUAI_FUNC int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx); +LUAI_FUNC int luaK_codeABC (FuncState *fs, OpCode o, int A, int B, int C); +LUAI_FUNC int luaK_codek (FuncState *fs, int reg, int k); +LUAI_FUNC void luaK_fixline (FuncState *fs, int line); +LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n); +LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n); +LUAI_FUNC void luaK_checkstack (FuncState *fs, int n); +LUAI_FUNC int luaK_stringK (FuncState *fs, TString *s); +LUAI_FUNC int luaK_intK (FuncState *fs, lua_Integer n); +LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e); +LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e); +LUAI_FUNC void luaK_exp2anyregup (FuncState *fs, expdesc *e); +LUAI_FUNC void luaK_exp2nextreg (FuncState *fs, expdesc *e); +LUAI_FUNC void luaK_exp2val (FuncState *fs, expdesc *e); +LUAI_FUNC int luaK_exp2RK (FuncState *fs, expdesc *e); +LUAI_FUNC void luaK_self (FuncState *fs, expdesc *e, expdesc *key); +LUAI_FUNC void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k); +LUAI_FUNC void luaK_goiftrue (FuncState *fs, expdesc *e); +LUAI_FUNC void luaK_goiffalse (FuncState *fs, expdesc *e); +LUAI_FUNC void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e); +LUAI_FUNC void luaK_setreturns (FuncState *fs, expdesc *e, int nresults); +LUAI_FUNC void luaK_setoneret (FuncState *fs, expdesc *e); +LUAI_FUNC int luaK_jump (FuncState *fs); +LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret); +LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target); +LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list); +LUAI_FUNC void luaK_patchclose (FuncState *fs, int list, int level); +LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2); +LUAI_FUNC int luaK_getlabel (FuncState *fs); +LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v, int line); +LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v); +LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1, + expdesc *v2, int line); +LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore); + + +#endif diff --git a/deps/rcheevos/test/lua/src/lcorolib.c b/deps/rcheevos/test/lua/src/lcorolib.c new file mode 100644 index 0000000000..2303429e7b --- /dev/null +++ b/deps/rcheevos/test/lua/src/lcorolib.c @@ -0,0 +1,168 @@ +/* +** $Id: lcorolib.c,v 1.10 2016/04/11 19:19:55 roberto Exp $ +** Coroutine Library +** See Copyright Notice in lua.h +*/ + +#define lcorolib_c +#define LUA_LIB + +#include "lprefix.h" + + +#include + +#include "lua.h" + +#include "lauxlib.h" +#include "lualib.h" + + +static lua_State *getco (lua_State *L) { + lua_State *co = lua_tothread(L, 1); + luaL_argcheck(L, co, 1, "thread expected"); + return co; +} + + +static int auxresume (lua_State *L, lua_State *co, int narg) { + int status; + if (!lua_checkstack(co, narg)) { + lua_pushliteral(L, "too many arguments to resume"); + return -1; /* error flag */ + } + if (lua_status(co) == LUA_OK && lua_gettop(co) == 0) { + lua_pushliteral(L, "cannot resume dead coroutine"); + return -1; /* error flag */ + } + lua_xmove(L, co, narg); + status = lua_resume(co, L, narg); + if (status == LUA_OK || status == LUA_YIELD) { + int nres = lua_gettop(co); + if (!lua_checkstack(L, nres + 1)) { + lua_pop(co, nres); /* remove results anyway */ + lua_pushliteral(L, "too many results to resume"); + return -1; /* error flag */ + } + lua_xmove(co, L, nres); /* move yielded values */ + return nres; + } + else { + lua_xmove(co, L, 1); /* move error message */ + return -1; /* error flag */ + } +} + + +static int luaB_coresume (lua_State *L) { + lua_State *co = getco(L); + int r; + r = auxresume(L, co, lua_gettop(L) - 1); + if (r < 0) { + lua_pushboolean(L, 0); + lua_insert(L, -2); + return 2; /* return false + error message */ + } + else { + lua_pushboolean(L, 1); + lua_insert(L, -(r + 1)); + return r + 1; /* return true + 'resume' returns */ + } +} + + +static int luaB_auxwrap (lua_State *L) { + lua_State *co = lua_tothread(L, lua_upvalueindex(1)); + int r = auxresume(L, co, lua_gettop(L)); + if (r < 0) { + if (lua_type(L, -1) == LUA_TSTRING) { /* error object is a string? */ + luaL_where(L, 1); /* add extra info */ + lua_insert(L, -2); + lua_concat(L, 2); + } + return lua_error(L); /* propagate error */ + } + return r; +} + + +static int luaB_cocreate (lua_State *L) { + lua_State *NL; + luaL_checktype(L, 1, LUA_TFUNCTION); + NL = lua_newthread(L); + lua_pushvalue(L, 1); /* move function to top */ + lua_xmove(L, NL, 1); /* move function from L to NL */ + return 1; +} + + +static int luaB_cowrap (lua_State *L) { + luaB_cocreate(L); + lua_pushcclosure(L, luaB_auxwrap, 1); + return 1; +} + + +static int luaB_yield (lua_State *L) { + return lua_yield(L, lua_gettop(L)); +} + + +static int luaB_costatus (lua_State *L) { + lua_State *co = getco(L); + if (L == co) lua_pushliteral(L, "running"); + else { + switch (lua_status(co)) { + case LUA_YIELD: + lua_pushliteral(L, "suspended"); + break; + case LUA_OK: { + lua_Debug ar; + if (lua_getstack(co, 0, &ar) > 0) /* does it have frames? */ + lua_pushliteral(L, "normal"); /* it is running */ + else if (lua_gettop(co) == 0) + lua_pushliteral(L, "dead"); + else + lua_pushliteral(L, "suspended"); /* initial state */ + break; + } + default: /* some error occurred */ + lua_pushliteral(L, "dead"); + break; + } + } + return 1; +} + + +static int luaB_yieldable (lua_State *L) { + lua_pushboolean(L, lua_isyieldable(L)); + return 1; +} + + +static int luaB_corunning (lua_State *L) { + int ismain = lua_pushthread(L); + lua_pushboolean(L, ismain); + return 2; +} + + +static const luaL_Reg co_funcs[] = { + {"create", luaB_cocreate}, + {"resume", luaB_coresume}, + {"running", luaB_corunning}, + {"status", luaB_costatus}, + {"wrap", luaB_cowrap}, + {"yield", luaB_yield}, + {"isyieldable", luaB_yieldable}, + {NULL, NULL} +}; + + + +LUAMOD_API int luaopen_coroutine (lua_State *L) { + luaL_newlib(L, co_funcs); + return 1; +} + diff --git a/deps/rcheevos/test/lua/src/lctype.c b/deps/rcheevos/test/lua/src/lctype.c new file mode 100644 index 0000000000..ae9367e691 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lctype.c @@ -0,0 +1,55 @@ +/* +** $Id: lctype.c,v 1.12 2014/11/02 19:19:04 roberto Exp $ +** 'ctype' functions for Lua +** See Copyright Notice in lua.h +*/ + +#define lctype_c +#define LUA_CORE + +#include "lprefix.h" + + +#include "lctype.h" + +#if !LUA_USE_CTYPE /* { */ + +#include + +LUAI_DDEF const lu_byte luai_ctype_[UCHAR_MAX + 2] = { + 0x00, /* EOZ */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0. */ + 0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1. */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x0c, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, /* 2. */ + 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, + 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, /* 3. */ + 0x16, 0x16, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, + 0x04, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x05, /* 4. */ + 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, + 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, /* 5. */ + 0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x05, + 0x04, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x05, /* 6. */ + 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, + 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, /* 7. */ + 0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 8. */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 9. */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* a. */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* b. */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* c. */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* d. */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* e. */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* f. */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +}; + +#endif /* } */ diff --git a/deps/rcheevos/test/lua/src/lctype.h b/deps/rcheevos/test/lua/src/lctype.h new file mode 100644 index 0000000000..99c7d12237 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lctype.h @@ -0,0 +1,95 @@ +/* +** $Id: lctype.h,v 1.12 2011/07/15 12:50:29 roberto Exp $ +** 'ctype' functions for Lua +** See Copyright Notice in lua.h +*/ + +#ifndef lctype_h +#define lctype_h + +#include "lua.h" + + +/* +** WARNING: the functions defined here do not necessarily correspond +** to the similar functions in the standard C ctype.h. They are +** optimized for the specific needs of Lua +*/ + +#if !defined(LUA_USE_CTYPE) + +#if 'A' == 65 && '0' == 48 +/* ASCII case: can use its own tables; faster and fixed */ +#define LUA_USE_CTYPE 0 +#else +/* must use standard C ctype */ +#define LUA_USE_CTYPE 1 +#endif + +#endif + + +#if !LUA_USE_CTYPE /* { */ + +#include + +#include "llimits.h" + + +#define ALPHABIT 0 +#define DIGITBIT 1 +#define PRINTBIT 2 +#define SPACEBIT 3 +#define XDIGITBIT 4 + + +#define MASK(B) (1 << (B)) + + +/* +** add 1 to char to allow index -1 (EOZ) +*/ +#define testprop(c,p) (luai_ctype_[(c)+1] & (p)) + +/* +** 'lalpha' (Lua alphabetic) and 'lalnum' (Lua alphanumeric) both include '_' +*/ +#define lislalpha(c) testprop(c, MASK(ALPHABIT)) +#define lislalnum(c) testprop(c, (MASK(ALPHABIT) | MASK(DIGITBIT))) +#define lisdigit(c) testprop(c, MASK(DIGITBIT)) +#define lisspace(c) testprop(c, MASK(SPACEBIT)) +#define lisprint(c) testprop(c, MASK(PRINTBIT)) +#define lisxdigit(c) testprop(c, MASK(XDIGITBIT)) + +/* +** this 'ltolower' only works for alphabetic characters +*/ +#define ltolower(c) ((c) | ('A' ^ 'a')) + + +/* two more entries for 0 and -1 (EOZ) */ +LUAI_DDEC const lu_byte luai_ctype_[UCHAR_MAX + 2]; + + +#else /* }{ */ + +/* +** use standard C ctypes +*/ + +#include + + +#define lislalpha(c) (isalpha(c) || (c) == '_') +#define lislalnum(c) (isalnum(c) || (c) == '_') +#define lisdigit(c) (isdigit(c)) +#define lisspace(c) (isspace(c)) +#define lisprint(c) (isprint(c)) +#define lisxdigit(c) (isxdigit(c)) + +#define ltolower(c) (tolower(c)) + +#endif /* } */ + +#endif + diff --git a/deps/rcheevos/test/lua/src/ldblib.c b/deps/rcheevos/test/lua/src/ldblib.c new file mode 100644 index 0000000000..786f6cd95d --- /dev/null +++ b/deps/rcheevos/test/lua/src/ldblib.c @@ -0,0 +1,456 @@ +/* +** $Id: ldblib.c,v 1.151 2015/11/23 11:29:43 roberto Exp $ +** Interface from Lua to its debug API +** See Copyright Notice in lua.h +*/ + +#define ldblib_c +#define LUA_LIB + +#include "lprefix.h" + + +#include +#include +#include + +#include "lua.h" + +#include "lauxlib.h" +#include "lualib.h" + + +/* +** The hook table at registry[&HOOKKEY] maps threads to their current +** hook function. (We only need the unique address of 'HOOKKEY'.) +*/ +static const int HOOKKEY = 0; + + +/* +** If L1 != L, L1 can be in any state, and therefore there are no +** guarantees about its stack space; any push in L1 must be +** checked. +*/ +static void checkstack (lua_State *L, lua_State *L1, int n) { + if (L != L1 && !lua_checkstack(L1, n)) + luaL_error(L, "stack overflow"); +} + + +static int db_getregistry (lua_State *L) { + lua_pushvalue(L, LUA_REGISTRYINDEX); + return 1; +} + + +static int db_getmetatable (lua_State *L) { + luaL_checkany(L, 1); + if (!lua_getmetatable(L, 1)) { + lua_pushnil(L); /* no metatable */ + } + return 1; +} + + +static int db_setmetatable (lua_State *L) { + int t = lua_type(L, 2); + luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2, + "nil or table expected"); + lua_settop(L, 2); + lua_setmetatable(L, 1); + return 1; /* return 1st argument */ +} + + +static int db_getuservalue (lua_State *L) { + if (lua_type(L, 1) != LUA_TUSERDATA) + lua_pushnil(L); + else + lua_getuservalue(L, 1); + return 1; +} + + +static int db_setuservalue (lua_State *L) { + luaL_checktype(L, 1, LUA_TUSERDATA); + luaL_checkany(L, 2); + lua_settop(L, 2); + lua_setuservalue(L, 1); + return 1; +} + + +/* +** Auxiliary function used by several library functions: check for +** an optional thread as function's first argument and set 'arg' with +** 1 if this argument is present (so that functions can skip it to +** access their other arguments) +*/ +static lua_State *getthread (lua_State *L, int *arg) { + if (lua_isthread(L, 1)) { + *arg = 1; + return lua_tothread(L, 1); + } + else { + *arg = 0; + return L; /* function will operate over current thread */ + } +} + + +/* +** Variations of 'lua_settable', used by 'db_getinfo' to put results +** from 'lua_getinfo' into result table. Key is always a string; +** value can be a string, an int, or a boolean. +*/ +static void settabss (lua_State *L, const char *k, const char *v) { + lua_pushstring(L, v); + lua_setfield(L, -2, k); +} + +static void settabsi (lua_State *L, const char *k, int v) { + lua_pushinteger(L, v); + lua_setfield(L, -2, k); +} + +static void settabsb (lua_State *L, const char *k, int v) { + lua_pushboolean(L, v); + lua_setfield(L, -2, k); +} + + +/* +** In function 'db_getinfo', the call to 'lua_getinfo' may push +** results on the stack; later it creates the result table to put +** these objects. Function 'treatstackoption' puts the result from +** 'lua_getinfo' on top of the result table so that it can call +** 'lua_setfield'. +*/ +static void treatstackoption (lua_State *L, lua_State *L1, const char *fname) { + if (L == L1) + lua_rotate(L, -2, 1); /* exchange object and table */ + else + lua_xmove(L1, L, 1); /* move object to the "main" stack */ + lua_setfield(L, -2, fname); /* put object into table */ +} + + +/* +** Calls 'lua_getinfo' and collects all results in a new table. +** L1 needs stack space for an optional input (function) plus +** two optional outputs (function and line table) from function +** 'lua_getinfo'. +*/ +static int db_getinfo (lua_State *L) { + lua_Debug ar; + int arg; + lua_State *L1 = getthread(L, &arg); + const char *options = luaL_optstring(L, arg+2, "flnStu"); + checkstack(L, L1, 3); + if (lua_isfunction(L, arg + 1)) { /* info about a function? */ + options = lua_pushfstring(L, ">%s", options); /* add '>' to 'options' */ + lua_pushvalue(L, arg + 1); /* move function to 'L1' stack */ + lua_xmove(L, L1, 1); + } + else { /* stack level */ + if (!lua_getstack(L1, (int)luaL_checkinteger(L, arg + 1), &ar)) { + lua_pushnil(L); /* level out of range */ + return 1; + } + } + if (!lua_getinfo(L1, options, &ar)) + return luaL_argerror(L, arg+2, "invalid option"); + lua_newtable(L); /* table to collect results */ + if (strchr(options, 'S')) { + settabss(L, "source", ar.source); + settabss(L, "short_src", ar.short_src); + settabsi(L, "linedefined", ar.linedefined); + settabsi(L, "lastlinedefined", ar.lastlinedefined); + settabss(L, "what", ar.what); + } + if (strchr(options, 'l')) + settabsi(L, "currentline", ar.currentline); + if (strchr(options, 'u')) { + settabsi(L, "nups", ar.nups); + settabsi(L, "nparams", ar.nparams); + settabsb(L, "isvararg", ar.isvararg); + } + if (strchr(options, 'n')) { + settabss(L, "name", ar.name); + settabss(L, "namewhat", ar.namewhat); + } + if (strchr(options, 't')) + settabsb(L, "istailcall", ar.istailcall); + if (strchr(options, 'L')) + treatstackoption(L, L1, "activelines"); + if (strchr(options, 'f')) + treatstackoption(L, L1, "func"); + return 1; /* return table */ +} + + +static int db_getlocal (lua_State *L) { + int arg; + lua_State *L1 = getthread(L, &arg); + lua_Debug ar; + const char *name; + int nvar = (int)luaL_checkinteger(L, arg + 2); /* local-variable index */ + if (lua_isfunction(L, arg + 1)) { /* function argument? */ + lua_pushvalue(L, arg + 1); /* push function */ + lua_pushstring(L, lua_getlocal(L, NULL, nvar)); /* push local name */ + return 1; /* return only name (there is no value) */ + } + else { /* stack-level argument */ + int level = (int)luaL_checkinteger(L, arg + 1); + if (!lua_getstack(L1, level, &ar)) /* out of range? */ + return luaL_argerror(L, arg+1, "level out of range"); + checkstack(L, L1, 1); + name = lua_getlocal(L1, &ar, nvar); + if (name) { + lua_xmove(L1, L, 1); /* move local value */ + lua_pushstring(L, name); /* push name */ + lua_rotate(L, -2, 1); /* re-order */ + return 2; + } + else { + lua_pushnil(L); /* no name (nor value) */ + return 1; + } + } +} + + +static int db_setlocal (lua_State *L) { + int arg; + const char *name; + lua_State *L1 = getthread(L, &arg); + lua_Debug ar; + int level = (int)luaL_checkinteger(L, arg + 1); + int nvar = (int)luaL_checkinteger(L, arg + 2); + if (!lua_getstack(L1, level, &ar)) /* out of range? */ + return luaL_argerror(L, arg+1, "level out of range"); + luaL_checkany(L, arg+3); + lua_settop(L, arg+3); + checkstack(L, L1, 1); + lua_xmove(L, L1, 1); + name = lua_setlocal(L1, &ar, nvar); + if (name == NULL) + lua_pop(L1, 1); /* pop value (if not popped by 'lua_setlocal') */ + lua_pushstring(L, name); + return 1; +} + + +/* +** get (if 'get' is true) or set an upvalue from a closure +*/ +static int auxupvalue (lua_State *L, int get) { + const char *name; + int n = (int)luaL_checkinteger(L, 2); /* upvalue index */ + luaL_checktype(L, 1, LUA_TFUNCTION); /* closure */ + name = get ? lua_getupvalue(L, 1, n) : lua_setupvalue(L, 1, n); + if (name == NULL) return 0; + lua_pushstring(L, name); + lua_insert(L, -(get+1)); /* no-op if get is false */ + return get + 1; +} + + +static int db_getupvalue (lua_State *L) { + return auxupvalue(L, 1); +} + + +static int db_setupvalue (lua_State *L) { + luaL_checkany(L, 3); + return auxupvalue(L, 0); +} + + +/* +** Check whether a given upvalue from a given closure exists and +** returns its index +*/ +static int checkupval (lua_State *L, int argf, int argnup) { + int nup = (int)luaL_checkinteger(L, argnup); /* upvalue index */ + luaL_checktype(L, argf, LUA_TFUNCTION); /* closure */ + luaL_argcheck(L, (lua_getupvalue(L, argf, nup) != NULL), argnup, + "invalid upvalue index"); + return nup; +} + + +static int db_upvalueid (lua_State *L) { + int n = checkupval(L, 1, 2); + lua_pushlightuserdata(L, lua_upvalueid(L, 1, n)); + return 1; +} + + +static int db_upvaluejoin (lua_State *L) { + int n1 = checkupval(L, 1, 2); + int n2 = checkupval(L, 3, 4); + luaL_argcheck(L, !lua_iscfunction(L, 1), 1, "Lua function expected"); + luaL_argcheck(L, !lua_iscfunction(L, 3), 3, "Lua function expected"); + lua_upvaluejoin(L, 1, n1, 3, n2); + return 0; +} + + +/* +** Call hook function registered at hook table for the current +** thread (if there is one) +*/ +static void hookf (lua_State *L, lua_Debug *ar) { + static const char *const hooknames[] = + {"call", "return", "line", "count", "tail call"}; + lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY); + lua_pushthread(L); + if (lua_rawget(L, -2) == LUA_TFUNCTION) { /* is there a hook function? */ + lua_pushstring(L, hooknames[(int)ar->event]); /* push event name */ + if (ar->currentline >= 0) + lua_pushinteger(L, ar->currentline); /* push current line */ + else lua_pushnil(L); + lua_assert(lua_getinfo(L, "lS", ar)); + lua_call(L, 2, 0); /* call hook function */ + } +} + + +/* +** Convert a string mask (for 'sethook') into a bit mask +*/ +static int makemask (const char *smask, int count) { + int mask = 0; + if (strchr(smask, 'c')) mask |= LUA_MASKCALL; + if (strchr(smask, 'r')) mask |= LUA_MASKRET; + if (strchr(smask, 'l')) mask |= LUA_MASKLINE; + if (count > 0) mask |= LUA_MASKCOUNT; + return mask; +} + + +/* +** Convert a bit mask (for 'gethook') into a string mask +*/ +static char *unmakemask (int mask, char *smask) { + int i = 0; + if (mask & LUA_MASKCALL) smask[i++] = 'c'; + if (mask & LUA_MASKRET) smask[i++] = 'r'; + if (mask & LUA_MASKLINE) smask[i++] = 'l'; + smask[i] = '\0'; + return smask; +} + + +static int db_sethook (lua_State *L) { + int arg, mask, count; + lua_Hook func; + lua_State *L1 = getthread(L, &arg); + if (lua_isnoneornil(L, arg+1)) { /* no hook? */ + lua_settop(L, arg+1); + func = NULL; mask = 0; count = 0; /* turn off hooks */ + } + else { + const char *smask = luaL_checkstring(L, arg+2); + luaL_checktype(L, arg+1, LUA_TFUNCTION); + count = (int)luaL_optinteger(L, arg + 3, 0); + func = hookf; mask = makemask(smask, count); + } + if (lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY) == LUA_TNIL) { + lua_createtable(L, 0, 2); /* create a hook table */ + lua_pushvalue(L, -1); + lua_rawsetp(L, LUA_REGISTRYINDEX, &HOOKKEY); /* set it in position */ + lua_pushstring(L, "k"); + lua_setfield(L, -2, "__mode"); /** hooktable.__mode = "k" */ + lua_pushvalue(L, -1); + lua_setmetatable(L, -2); /* setmetatable(hooktable) = hooktable */ + } + checkstack(L, L1, 1); + lua_pushthread(L1); lua_xmove(L1, L, 1); /* key (thread) */ + lua_pushvalue(L, arg + 1); /* value (hook function) */ + lua_rawset(L, -3); /* hooktable[L1] = new Lua hook */ + lua_sethook(L1, func, mask, count); + return 0; +} + + +static int db_gethook (lua_State *L) { + int arg; + lua_State *L1 = getthread(L, &arg); + char buff[5]; + int mask = lua_gethookmask(L1); + lua_Hook hook = lua_gethook(L1); + if (hook == NULL) /* no hook? */ + lua_pushnil(L); + else if (hook != hookf) /* external hook? */ + lua_pushliteral(L, "external hook"); + else { /* hook table must exist */ + lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY); + checkstack(L, L1, 1); + lua_pushthread(L1); lua_xmove(L1, L, 1); + lua_rawget(L, -2); /* 1st result = hooktable[L1] */ + lua_remove(L, -2); /* remove hook table */ + } + lua_pushstring(L, unmakemask(mask, buff)); /* 2nd result = mask */ + lua_pushinteger(L, lua_gethookcount(L1)); /* 3rd result = count */ + return 3; +} + + +static int db_debug (lua_State *L) { + for (;;) { + char buffer[250]; + lua_writestringerror("%s", "lua_debug> "); + if (fgets(buffer, sizeof(buffer), stdin) == 0 || + strcmp(buffer, "cont\n") == 0) + return 0; + if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") || + lua_pcall(L, 0, 0, 0)) + lua_writestringerror("%s\n", lua_tostring(L, -1)); + lua_settop(L, 0); /* remove eventual returns */ + } +} + + +static int db_traceback (lua_State *L) { + int arg; + lua_State *L1 = getthread(L, &arg); + const char *msg = lua_tostring(L, arg + 1); + if (msg == NULL && !lua_isnoneornil(L, arg + 1)) /* non-string 'msg'? */ + lua_pushvalue(L, arg + 1); /* return it untouched */ + else { + int level = (int)luaL_optinteger(L, arg + 2, (L == L1) ? 1 : 0); + luaL_traceback(L, L1, msg, level); + } + return 1; +} + + +static const luaL_Reg dblib[] = { + {"debug", db_debug}, + {"getuservalue", db_getuservalue}, + {"gethook", db_gethook}, + {"getinfo", db_getinfo}, + {"getlocal", db_getlocal}, + {"getregistry", db_getregistry}, + {"getmetatable", db_getmetatable}, + {"getupvalue", db_getupvalue}, + {"upvaluejoin", db_upvaluejoin}, + {"upvalueid", db_upvalueid}, + {"setuservalue", db_setuservalue}, + {"sethook", db_sethook}, + {"setlocal", db_setlocal}, + {"setmetatable", db_setmetatable}, + {"setupvalue", db_setupvalue}, + {"traceback", db_traceback}, + {NULL, NULL} +}; + + +LUAMOD_API int luaopen_debug (lua_State *L) { + luaL_newlib(L, dblib); + return 1; +} + diff --git a/deps/rcheevos/test/lua/src/ldebug.c b/deps/rcheevos/test/lua/src/ldebug.c new file mode 100644 index 0000000000..4a98cd4116 --- /dev/null +++ b/deps/rcheevos/test/lua/src/ldebug.c @@ -0,0 +1,698 @@ +/* +** $Id: ldebug.c,v 2.121 2016/10/19 12:32:10 roberto Exp $ +** Debug Interface +** See Copyright Notice in lua.h +*/ + +#define ldebug_c +#define LUA_CORE + +#include "lprefix.h" + + +#include +#include +#include + +#include "lua.h" + +#include "lapi.h" +#include "lcode.h" +#include "ldebug.h" +#include "ldo.h" +#include "lfunc.h" +#include "lobject.h" +#include "lopcodes.h" +#include "lstate.h" +#include "lstring.h" +#include "ltable.h" +#include "ltm.h" +#include "lvm.h" + + + +#define noLuaClosure(f) ((f) == NULL || (f)->c.tt == LUA_TCCL) + + +/* Active Lua function (given call info) */ +#define ci_func(ci) (clLvalue((ci)->func)) + + +static const char *funcnamefromcode (lua_State *L, CallInfo *ci, + const char **name); + + +static int currentpc (CallInfo *ci) { + lua_assert(isLua(ci)); + return pcRel(ci->u.l.savedpc, ci_func(ci)->p); +} + + +static int currentline (CallInfo *ci) { + return getfuncline(ci_func(ci)->p, currentpc(ci)); +} + + +/* +** If function yielded, its 'func' can be in the 'extra' field. The +** next function restores 'func' to its correct value for debugging +** purposes. (It exchanges 'func' and 'extra'; so, when called again, +** after debugging, it also "re-restores" ** 'func' to its altered value. +*/ +static void swapextra (lua_State *L) { + if (L->status == LUA_YIELD) { + CallInfo *ci = L->ci; /* get function that yielded */ + StkId temp = ci->func; /* exchange its 'func' and 'extra' values */ + ci->func = restorestack(L, ci->extra); + ci->extra = savestack(L, temp); + } +} + + +/* +** This function can be called asynchronously (e.g. during a signal). +** Fields 'oldpc', 'basehookcount', and 'hookcount' (set by +** 'resethookcount') are for debug only, and it is no problem if they +** get arbitrary values (causes at most one wrong hook call). 'hookmask' +** is an atomic value. We assume that pointers are atomic too (e.g., gcc +** ensures that for all platforms where it runs). Moreover, 'hook' is +** always checked before being called (see 'luaD_hook'). +*/ +LUA_API void lua_sethook (lua_State *L, lua_Hook func, int mask, int count) { + if (func == NULL || mask == 0) { /* turn off hooks? */ + mask = 0; + func = NULL; + } + if (isLua(L->ci)) + L->oldpc = L->ci->u.l.savedpc; + L->hook = func; + L->basehookcount = count; + resethookcount(L); + L->hookmask = cast_byte(mask); +} + + +LUA_API lua_Hook lua_gethook (lua_State *L) { + return L->hook; +} + + +LUA_API int lua_gethookmask (lua_State *L) { + return L->hookmask; +} + + +LUA_API int lua_gethookcount (lua_State *L) { + return L->basehookcount; +} + + +LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar) { + int status; + CallInfo *ci; + if (level < 0) return 0; /* invalid (negative) level */ + lua_lock(L); + for (ci = L->ci; level > 0 && ci != &L->base_ci; ci = ci->previous) + level--; + if (level == 0 && ci != &L->base_ci) { /* level found? */ + status = 1; + ar->i_ci = ci; + } + else status = 0; /* no such level */ + lua_unlock(L); + return status; +} + + +static const char *upvalname (Proto *p, int uv) { + TString *s = check_exp(uv < p->sizeupvalues, p->upvalues[uv].name); + if (s == NULL) return "?"; + else return getstr(s); +} + + +static const char *findvararg (CallInfo *ci, int n, StkId *pos) { + int nparams = clLvalue(ci->func)->p->numparams; + if (n >= cast_int(ci->u.l.base - ci->func) - nparams) + return NULL; /* no such vararg */ + else { + *pos = ci->func + nparams + n; + return "(*vararg)"; /* generic name for any vararg */ + } +} + + +static const char *findlocal (lua_State *L, CallInfo *ci, int n, + StkId *pos) { + const char *name = NULL; + StkId base; + if (isLua(ci)) { + if (n < 0) /* access to vararg values? */ + return findvararg(ci, -n, pos); + else { + base = ci->u.l.base; + name = luaF_getlocalname(ci_func(ci)->p, n, currentpc(ci)); + } + } + else + base = ci->func + 1; + if (name == NULL) { /* no 'standard' name? */ + StkId limit = (ci == L->ci) ? L->top : ci->next->func; + if (limit - base >= n && n > 0) /* is 'n' inside 'ci' stack? */ + name = "(*temporary)"; /* generic name for any valid slot */ + else + return NULL; /* no name */ + } + *pos = base + (n - 1); + return name; +} + + +LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n) { + const char *name; + lua_lock(L); + swapextra(L); + if (ar == NULL) { /* information about non-active function? */ + if (!isLfunction(L->top - 1)) /* not a Lua function? */ + name = NULL; + else /* consider live variables at function start (parameters) */ + name = luaF_getlocalname(clLvalue(L->top - 1)->p, n, 0); + } + else { /* active function; get information through 'ar' */ + StkId pos = NULL; /* to avoid warnings */ + name = findlocal(L, ar->i_ci, n, &pos); + if (name) { + setobj2s(L, L->top, pos); + api_incr_top(L); + } + } + swapextra(L); + lua_unlock(L); + return name; +} + + +LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n) { + StkId pos = NULL; /* to avoid warnings */ + const char *name; + lua_lock(L); + swapextra(L); + name = findlocal(L, ar->i_ci, n, &pos); + if (name) { + setobjs2s(L, pos, L->top - 1); + L->top--; /* pop value */ + } + swapextra(L); + lua_unlock(L); + return name; +} + + +static void funcinfo (lua_Debug *ar, Closure *cl) { + if (noLuaClosure(cl)) { + ar->source = "=[C]"; + ar->linedefined = -1; + ar->lastlinedefined = -1; + ar->what = "C"; + } + else { + Proto *p = cl->l.p; + ar->source = p->source ? getstr(p->source) : "=?"; + ar->linedefined = p->linedefined; + ar->lastlinedefined = p->lastlinedefined; + ar->what = (ar->linedefined == 0) ? "main" : "Lua"; + } + luaO_chunkid(ar->short_src, ar->source, LUA_IDSIZE); +} + + +static void collectvalidlines (lua_State *L, Closure *f) { + if (noLuaClosure(f)) { + setnilvalue(L->top); + api_incr_top(L); + } + else { + int i; + TValue v; + int *lineinfo = f->l.p->lineinfo; + Table *t = luaH_new(L); /* new table to store active lines */ + sethvalue(L, L->top, t); /* push it on stack */ + api_incr_top(L); + setbvalue(&v, 1); /* boolean 'true' to be the value of all indices */ + for (i = 0; i < f->l.p->sizelineinfo; i++) /* for all lines with code */ + luaH_setint(L, t, lineinfo[i], &v); /* table[line] = true */ + } +} + + +static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) { + if (ci == NULL) /* no 'ci'? */ + return NULL; /* no info */ + else if (ci->callstatus & CIST_FIN) { /* is this a finalizer? */ + *name = "__gc"; + return "metamethod"; /* report it as such */ + } + /* calling function is a known Lua function? */ + else if (!(ci->callstatus & CIST_TAIL) && isLua(ci->previous)) + return funcnamefromcode(L, ci->previous, name); + else return NULL; /* no way to find a name */ +} + + +static int auxgetinfo (lua_State *L, const char *what, lua_Debug *ar, + Closure *f, CallInfo *ci) { + int status = 1; + for (; *what; what++) { + switch (*what) { + case 'S': { + funcinfo(ar, f); + break; + } + case 'l': { + ar->currentline = (ci && isLua(ci)) ? currentline(ci) : -1; + break; + } + case 'u': { + ar->nups = (f == NULL) ? 0 : f->c.nupvalues; + if (noLuaClosure(f)) { + ar->isvararg = 1; + ar->nparams = 0; + } + else { + ar->isvararg = f->l.p->is_vararg; + ar->nparams = f->l.p->numparams; + } + break; + } + case 't': { + ar->istailcall = (ci) ? ci->callstatus & CIST_TAIL : 0; + break; + } + case 'n': { + ar->namewhat = getfuncname(L, ci, &ar->name); + if (ar->namewhat == NULL) { + ar->namewhat = ""; /* not found */ + ar->name = NULL; + } + break; + } + case 'L': + case 'f': /* handled by lua_getinfo */ + break; + default: status = 0; /* invalid option */ + } + } + return status; +} + + +LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar) { + int status; + Closure *cl; + CallInfo *ci; + StkId func; + lua_lock(L); + swapextra(L); + if (*what == '>') { + ci = NULL; + func = L->top - 1; + api_check(L, ttisfunction(func), "function expected"); + what++; /* skip the '>' */ + L->top--; /* pop function */ + } + else { + ci = ar->i_ci; + func = ci->func; + lua_assert(ttisfunction(ci->func)); + } + cl = ttisclosure(func) ? clvalue(func) : NULL; + status = auxgetinfo(L, what, ar, cl, ci); + if (strchr(what, 'f')) { + setobjs2s(L, L->top, func); + api_incr_top(L); + } + swapextra(L); /* correct before option 'L', which can raise a mem. error */ + if (strchr(what, 'L')) + collectvalidlines(L, cl); + lua_unlock(L); + return status; +} + + +/* +** {====================================================== +** Symbolic Execution +** ======================================================= +*/ + +static const char *getobjname (Proto *p, int lastpc, int reg, + const char **name); + + +/* +** find a "name" for the RK value 'c' +*/ +static void kname (Proto *p, int pc, int c, const char **name) { + if (ISK(c)) { /* is 'c' a constant? */ + TValue *kvalue = &p->k[INDEXK(c)]; + if (ttisstring(kvalue)) { /* literal constant? */ + *name = svalue(kvalue); /* it is its own name */ + return; + } + /* else no reasonable name found */ + } + else { /* 'c' is a register */ + const char *what = getobjname(p, pc, c, name); /* search for 'c' */ + if (what && *what == 'c') { /* found a constant name? */ + return; /* 'name' already filled */ + } + /* else no reasonable name found */ + } + *name = "?"; /* no reasonable name found */ +} + + +static int filterpc (int pc, int jmptarget) { + if (pc < jmptarget) /* is code conditional (inside a jump)? */ + return -1; /* cannot know who sets that register */ + else return pc; /* current position sets that register */ +} + + +/* +** try to find last instruction before 'lastpc' that modified register 'reg' +*/ +static int findsetreg (Proto *p, int lastpc, int reg) { + int pc; + int setreg = -1; /* keep last instruction that changed 'reg' */ + int jmptarget = 0; /* any code before this address is conditional */ + for (pc = 0; pc < lastpc; pc++) { + Instruction i = p->code[pc]; + OpCode op = GET_OPCODE(i); + int a = GETARG_A(i); + switch (op) { + case OP_LOADNIL: { + int b = GETARG_B(i); + if (a <= reg && reg <= a + b) /* set registers from 'a' to 'a+b' */ + setreg = filterpc(pc, jmptarget); + break; + } + case OP_TFORCALL: { + if (reg >= a + 2) /* affect all regs above its base */ + setreg = filterpc(pc, jmptarget); + break; + } + case OP_CALL: + case OP_TAILCALL: { + if (reg >= a) /* affect all registers above base */ + setreg = filterpc(pc, jmptarget); + break; + } + case OP_JMP: { + int b = GETARG_sBx(i); + int dest = pc + 1 + b; + /* jump is forward and do not skip 'lastpc'? */ + if (pc < dest && dest <= lastpc) { + if (dest > jmptarget) + jmptarget = dest; /* update 'jmptarget' */ + } + break; + } + default: + if (testAMode(op) && reg == a) /* any instruction that set A */ + setreg = filterpc(pc, jmptarget); + break; + } + } + return setreg; +} + + +static const char *getobjname (Proto *p, int lastpc, int reg, + const char **name) { + int pc; + *name = luaF_getlocalname(p, reg + 1, lastpc); + if (*name) /* is a local? */ + return "local"; + /* else try symbolic execution */ + pc = findsetreg(p, lastpc, reg); + if (pc != -1) { /* could find instruction? */ + Instruction i = p->code[pc]; + OpCode op = GET_OPCODE(i); + switch (op) { + case OP_MOVE: { + int b = GETARG_B(i); /* move from 'b' to 'a' */ + if (b < GETARG_A(i)) + return getobjname(p, pc, b, name); /* get name for 'b' */ + break; + } + case OP_GETTABUP: + case OP_GETTABLE: { + int k = GETARG_C(i); /* key index */ + int t = GETARG_B(i); /* table index */ + const char *vn = (op == OP_GETTABLE) /* name of indexed variable */ + ? luaF_getlocalname(p, t + 1, pc) + : upvalname(p, t); + kname(p, pc, k, name); + return (vn && strcmp(vn, LUA_ENV) == 0) ? "global" : "field"; + } + case OP_GETUPVAL: { + *name = upvalname(p, GETARG_B(i)); + return "upvalue"; + } + case OP_LOADK: + case OP_LOADKX: { + int b = (op == OP_LOADK) ? GETARG_Bx(i) + : GETARG_Ax(p->code[pc + 1]); + if (ttisstring(&p->k[b])) { + *name = svalue(&p->k[b]); + return "constant"; + } + break; + } + case OP_SELF: { + int k = GETARG_C(i); /* key index */ + kname(p, pc, k, name); + return "method"; + } + default: break; /* go through to return NULL */ + } + } + return NULL; /* could not find reasonable name */ +} + + +/* +** Try to find a name for a function based on the code that called it. +** (Only works when function was called by a Lua function.) +** Returns what the name is (e.g., "for iterator", "method", +** "metamethod") and sets '*name' to point to the name. +*/ +static const char *funcnamefromcode (lua_State *L, CallInfo *ci, + const char **name) { + TMS tm = (TMS)0; /* (initial value avoids warnings) */ + Proto *p = ci_func(ci)->p; /* calling function */ + int pc = currentpc(ci); /* calling instruction index */ + Instruction i = p->code[pc]; /* calling instruction */ + if (ci->callstatus & CIST_HOOKED) { /* was it called inside a hook? */ + *name = "?"; + return "hook"; + } + switch (GET_OPCODE(i)) { + case OP_CALL: + case OP_TAILCALL: + return getobjname(p, pc, GETARG_A(i), name); /* get function name */ + case OP_TFORCALL: { /* for iterator */ + *name = "for iterator"; + return "for iterator"; + } + /* other instructions can do calls through metamethods */ + case OP_SELF: case OP_GETTABUP: case OP_GETTABLE: + tm = TM_INDEX; + break; + case OP_SETTABUP: case OP_SETTABLE: + tm = TM_NEWINDEX; + break; + case OP_ADD: case OP_SUB: case OP_MUL: case OP_MOD: + case OP_POW: case OP_DIV: case OP_IDIV: case OP_BAND: + case OP_BOR: case OP_BXOR: case OP_SHL: case OP_SHR: { + int offset = cast_int(GET_OPCODE(i)) - cast_int(OP_ADD); /* ORDER OP */ + tm = cast(TMS, offset + cast_int(TM_ADD)); /* ORDER TM */ + break; + } + case OP_UNM: tm = TM_UNM; break; + case OP_BNOT: tm = TM_BNOT; break; + case OP_LEN: tm = TM_LEN; break; + case OP_CONCAT: tm = TM_CONCAT; break; + case OP_EQ: tm = TM_EQ; break; + case OP_LT: tm = TM_LT; break; + case OP_LE: tm = TM_LE; break; + default: + return NULL; /* cannot find a reasonable name */ + } + *name = getstr(G(L)->tmname[tm]); + return "metamethod"; +} + +/* }====================================================== */ + + + +/* +** The subtraction of two potentially unrelated pointers is +** not ISO C, but it should not crash a program; the subsequent +** checks are ISO C and ensure a correct result. +*/ +static int isinstack (CallInfo *ci, const TValue *o) { + ptrdiff_t i = o - ci->u.l.base; + return (0 <= i && i < (ci->top - ci->u.l.base) && ci->u.l.base + i == o); +} + + +/* +** Checks whether value 'o' came from an upvalue. (That can only happen +** with instructions OP_GETTABUP/OP_SETTABUP, which operate directly on +** upvalues.) +*/ +static const char *getupvalname (CallInfo *ci, const TValue *o, + const char **name) { + LClosure *c = ci_func(ci); + int i; + for (i = 0; i < c->nupvalues; i++) { + if (c->upvals[i]->v == o) { + *name = upvalname(c->p, i); + return "upvalue"; + } + } + return NULL; +} + + +static const char *varinfo (lua_State *L, const TValue *o) { + const char *name = NULL; /* to avoid warnings */ + CallInfo *ci = L->ci; + const char *kind = NULL; + if (isLua(ci)) { + kind = getupvalname(ci, o, &name); /* check whether 'o' is an upvalue */ + if (!kind && isinstack(ci, o)) /* no? try a register */ + kind = getobjname(ci_func(ci)->p, currentpc(ci), + cast_int(o - ci->u.l.base), &name); + } + return (kind) ? luaO_pushfstring(L, " (%s '%s')", kind, name) : ""; +} + + +l_noret luaG_typeerror (lua_State *L, const TValue *o, const char *op) { + const char *t = luaT_objtypename(L, o); + luaG_runerror(L, "attempt to %s a %s value%s", op, t, varinfo(L, o)); +} + + +l_noret luaG_concaterror (lua_State *L, const TValue *p1, const TValue *p2) { + if (ttisstring(p1) || cvt2str(p1)) p1 = p2; + luaG_typeerror(L, p1, "concatenate"); +} + + +l_noret luaG_opinterror (lua_State *L, const TValue *p1, + const TValue *p2, const char *msg) { + lua_Number temp; + if (!tonumber(p1, &temp)) /* first operand is wrong? */ + p2 = p1; /* now second is wrong */ + luaG_typeerror(L, p2, msg); +} + + +/* +** Error when both values are convertible to numbers, but not to integers +*/ +l_noret luaG_tointerror (lua_State *L, const TValue *p1, const TValue *p2) { + lua_Integer temp; + if (!tointeger(p1, &temp)) + p2 = p1; + luaG_runerror(L, "number%s has no integer representation", varinfo(L, p2)); +} + + +l_noret luaG_ordererror (lua_State *L, const TValue *p1, const TValue *p2) { + const char *t1 = luaT_objtypename(L, p1); + const char *t2 = luaT_objtypename(L, p2); + if (strcmp(t1, t2) == 0) + luaG_runerror(L, "attempt to compare two %s values", t1); + else + luaG_runerror(L, "attempt to compare %s with %s", t1, t2); +} + + +/* add src:line information to 'msg' */ +const char *luaG_addinfo (lua_State *L, const char *msg, TString *src, + int line) { + char buff[LUA_IDSIZE]; + if (src) + luaO_chunkid(buff, getstr(src), LUA_IDSIZE); + else { /* no source available; use "?" instead */ + buff[0] = '?'; buff[1] = '\0'; + } + return luaO_pushfstring(L, "%s:%d: %s", buff, line, msg); +} + + +l_noret luaG_errormsg (lua_State *L) { + if (L->errfunc != 0) { /* is there an error handling function? */ + StkId errfunc = restorestack(L, L->errfunc); + setobjs2s(L, L->top, L->top - 1); /* move argument */ + setobjs2s(L, L->top - 1, errfunc); /* push function */ + L->top++; /* assume EXTRC_STACK */ + luaD_callnoyield(L, L->top - 2, 1); /* call it */ + } + luaD_throw(L, LUA_ERRRUN); +} + + +l_noret luaG_runerror (lua_State *L, const char *fmt, ...) { + CallInfo *ci = L->ci; + const char *msg; + va_list argp; + va_start(argp, fmt); + msg = luaO_pushvfstring(L, fmt, argp); /* format message */ + va_end(argp); + if (isLua(ci)) /* if Lua function, add source:line information */ + luaG_addinfo(L, msg, ci_func(ci)->p->source, currentline(ci)); + luaG_errormsg(L); +} + + +void luaG_traceexec (lua_State *L) { + CallInfo *ci = L->ci; + lu_byte mask = L->hookmask; + int counthook = (--L->hookcount == 0 && (mask & LUA_MASKCOUNT)); + if (counthook) + resethookcount(L); /* reset count */ + else if (!(mask & LUA_MASKLINE)) + return; /* no line hook and count != 0; nothing to be done */ + if (ci->callstatus & CIST_HOOKYIELD) { /* called hook last time? */ + ci->callstatus &= ~CIST_HOOKYIELD; /* erase mark */ + return; /* do not call hook again (VM yielded, so it did not move) */ + } + if (counthook) + luaD_hook(L, LUA_HOOKCOUNT, -1); /* call count hook */ + if (mask & LUA_MASKLINE) { + Proto *p = ci_func(ci)->p; + int npc = pcRel(ci->u.l.savedpc, p); + int newline = getfuncline(p, npc); + if (npc == 0 || /* call linehook when enter a new function, */ + ci->u.l.savedpc <= L->oldpc || /* when jump back (loop), or when */ + newline != getfuncline(p, pcRel(L->oldpc, p))) /* enter a new line */ + luaD_hook(L, LUA_HOOKLINE, newline); /* call line hook */ + } + L->oldpc = ci->u.l.savedpc; + if (L->status == LUA_YIELD) { /* did hook yield? */ + if (counthook) + L->hookcount = 1; /* undo decrement to zero */ + ci->u.l.savedpc--; /* undo increment (resume will increment it again) */ + ci->callstatus |= CIST_HOOKYIELD; /* mark that it yielded */ + ci->func = L->top - 1; /* protect stack below results */ + luaD_throw(L, LUA_YIELD); + } +} + diff --git a/deps/rcheevos/test/lua/src/ldebug.h b/deps/rcheevos/test/lua/src/ldebug.h new file mode 100644 index 0000000000..0e31546b1b --- /dev/null +++ b/deps/rcheevos/test/lua/src/ldebug.h @@ -0,0 +1,39 @@ +/* +** $Id: ldebug.h,v 2.14 2015/05/22 17:45:56 roberto Exp $ +** Auxiliary functions from Debug Interface module +** See Copyright Notice in lua.h +*/ + +#ifndef ldebug_h +#define ldebug_h + + +#include "lstate.h" + + +#define pcRel(pc, p) (cast(int, (pc) - (p)->code) - 1) + +#define getfuncline(f,pc) (((f)->lineinfo) ? (f)->lineinfo[pc] : -1) + +#define resethookcount(L) (L->hookcount = L->basehookcount) + + +LUAI_FUNC l_noret luaG_typeerror (lua_State *L, const TValue *o, + const char *opname); +LUAI_FUNC l_noret luaG_concaterror (lua_State *L, const TValue *p1, + const TValue *p2); +LUAI_FUNC l_noret luaG_opinterror (lua_State *L, const TValue *p1, + const TValue *p2, + const char *msg); +LUAI_FUNC l_noret luaG_tointerror (lua_State *L, const TValue *p1, + const TValue *p2); +LUAI_FUNC l_noret luaG_ordererror (lua_State *L, const TValue *p1, + const TValue *p2); +LUAI_FUNC l_noret luaG_runerror (lua_State *L, const char *fmt, ...); +LUAI_FUNC const char *luaG_addinfo (lua_State *L, const char *msg, + TString *src, int line); +LUAI_FUNC l_noret luaG_errormsg (lua_State *L); +LUAI_FUNC void luaG_traceexec (lua_State *L); + + +#endif diff --git a/deps/rcheevos/test/lua/src/ldo.c b/deps/rcheevos/test/lua/src/ldo.c new file mode 100644 index 0000000000..0a0132ce90 --- /dev/null +++ b/deps/rcheevos/test/lua/src/ldo.c @@ -0,0 +1,802 @@ +/* +** $Id: ldo.c,v 2.157 2016/12/13 15:52:21 roberto Exp $ +** Stack and Call structure of Lua +** See Copyright Notice in lua.h +*/ + +#define ldo_c +#define LUA_CORE + +#include "lprefix.h" + + +#include +#include +#include + +#include "lua.h" + +#include "lapi.h" +#include "ldebug.h" +#include "ldo.h" +#include "lfunc.h" +#include "lgc.h" +#include "lmem.h" +#include "lobject.h" +#include "lopcodes.h" +#include "lparser.h" +#include "lstate.h" +#include "lstring.h" +#include "ltable.h" +#include "ltm.h" +#include "lundump.h" +#include "lvm.h" +#include "lzio.h" + + + +#define errorstatus(s) ((s) > LUA_YIELD) + + +/* +** {====================================================== +** Error-recovery functions +** ======================================================= +*/ + +/* +** LUAI_THROW/LUAI_TRY define how Lua does exception handling. By +** default, Lua handles errors with exceptions when compiling as +** C++ code, with _longjmp/_setjmp when asked to use them, and with +** longjmp/setjmp otherwise. +*/ +#if !defined(LUAI_THROW) /* { */ + +#if defined(__cplusplus) && !defined(LUA_USE_LONGJMP) /* { */ + +/* C++ exceptions */ +#define LUAI_THROW(L,c) throw(c) +#define LUAI_TRY(L,c,a) \ + try { a } catch(...) { if ((c)->status == 0) (c)->status = -1; } +#define luai_jmpbuf int /* dummy variable */ + +#elif defined(LUA_USE_POSIX) /* }{ */ + +/* in POSIX, try _longjmp/_setjmp (more efficient) */ +#define LUAI_THROW(L,c) _longjmp((c)->b, 1) +#define LUAI_TRY(L,c,a) if (_setjmp((c)->b) == 0) { a } +#define luai_jmpbuf jmp_buf + +#else /* }{ */ + +/* ISO C handling with long jumps */ +#define LUAI_THROW(L,c) longjmp((c)->b, 1) +#define LUAI_TRY(L,c,a) if (setjmp((c)->b) == 0) { a } +#define luai_jmpbuf jmp_buf + +#endif /* } */ + +#endif /* } */ + + + +/* chain list of long jump buffers */ +struct lua_longjmp { + struct lua_longjmp *previous; + luai_jmpbuf b; + volatile int status; /* error code */ +}; + + +static void seterrorobj (lua_State *L, int errcode, StkId oldtop) { + switch (errcode) { + case LUA_ERRMEM: { /* memory error? */ + setsvalue2s(L, oldtop, G(L)->memerrmsg); /* reuse preregistered msg. */ + break; + } + case LUA_ERRERR: { + setsvalue2s(L, oldtop, luaS_newliteral(L, "error in error handling")); + break; + } + default: { + setobjs2s(L, oldtop, L->top - 1); /* error message on current top */ + break; + } + } + L->top = oldtop + 1; +} + + +l_noret luaD_throw (lua_State *L, int errcode) { + if (L->errorJmp) { /* thread has an error handler? */ + L->errorJmp->status = errcode; /* set status */ + LUAI_THROW(L, L->errorJmp); /* jump to it */ + } + else { /* thread has no error handler */ + global_State *g = G(L); + L->status = cast_byte(errcode); /* mark it as dead */ + if (g->mainthread->errorJmp) { /* main thread has a handler? */ + setobjs2s(L, g->mainthread->top++, L->top - 1); /* copy error obj. */ + luaD_throw(g->mainthread, errcode); /* re-throw in main thread */ + } + else { /* no handler at all; abort */ + if (g->panic) { /* panic function? */ + seterrorobj(L, errcode, L->top); /* assume EXTRC_STACK */ + if (L->ci->top < L->top) + L->ci->top = L->top; /* pushing msg. can break this invariant */ + lua_unlock(L); + g->panic(L); /* call panic function (last chance to jump out) */ + } + abort(); + } + } +} + + +int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud) { + unsigned short oldnCcalls = L->nCcalls; + struct lua_longjmp lj; + lj.status = LUA_OK; + lj.previous = L->errorJmp; /* chain new error handler */ + L->errorJmp = &lj; + LUAI_TRY(L, &lj, + (*f)(L, ud); + ); + L->errorJmp = lj.previous; /* restore old error handler */ + L->nCcalls = oldnCcalls; + return lj.status; +} + +/* }====================================================== */ + + +/* +** {================================================================== +** Stack reallocation +** =================================================================== +*/ +static void correctstack (lua_State *L, TValue *oldstack) { + CallInfo *ci; + UpVal *up; + L->top = (L->top - oldstack) + L->stack; + for (up = L->openupval; up != NULL; up = up->u.open.next) + up->v = (up->v - oldstack) + L->stack; + for (ci = L->ci; ci != NULL; ci = ci->previous) { + ci->top = (ci->top - oldstack) + L->stack; + ci->func = (ci->func - oldstack) + L->stack; + if (isLua(ci)) + ci->u.l.base = (ci->u.l.base - oldstack) + L->stack; + } +} + + +/* some space for error handling */ +#define ERRORSTACKSIZE (LUAI_MAXSTACK + 200) + + +void luaD_reallocstack (lua_State *L, int newsize) { + TValue *oldstack = L->stack; + int lim = L->stacksize; + lua_assert(newsize <= LUAI_MAXSTACK || newsize == ERRORSTACKSIZE); + lua_assert(L->stack_last - L->stack == L->stacksize - EXTRC_STACK); + luaM_reallocvector(L, L->stack, L->stacksize, newsize, TValue); + for (; lim < newsize; lim++) + setnilvalue(L->stack + lim); /* erase new segment */ + L->stacksize = newsize; + L->stack_last = L->stack + newsize - EXTRC_STACK; + correctstack(L, oldstack); +} + + +void luaD_growstack (lua_State *L, int n) { + int size = L->stacksize; + if (size > LUAI_MAXSTACK) /* error after extra size? */ + luaD_throw(L, LUA_ERRERR); + else { + int needed = cast_int(L->top - L->stack) + n + EXTRC_STACK; + int newsize = 2 * size; + if (newsize > LUAI_MAXSTACK) newsize = LUAI_MAXSTACK; + if (newsize < needed) newsize = needed; + if (newsize > LUAI_MAXSTACK) { /* stack overflow? */ + luaD_reallocstack(L, ERRORSTACKSIZE); + luaG_runerror(L, "stack overflow"); + } + else + luaD_reallocstack(L, newsize); + } +} + + +static int stackinuse (lua_State *L) { + CallInfo *ci; + StkId lim = L->top; + for (ci = L->ci; ci != NULL; ci = ci->previous) { + if (lim < ci->top) lim = ci->top; + } + lua_assert(lim <= L->stack_last); + return cast_int(lim - L->stack) + 1; /* part of stack in use */ +} + + +void luaD_shrinkstack (lua_State *L) { + int inuse = stackinuse(L); + int goodsize = inuse + (inuse / 8) + 2*EXTRC_STACK; + if (goodsize > LUAI_MAXSTACK) + goodsize = LUAI_MAXSTACK; /* respect stack limit */ + if (L->stacksize > LUAI_MAXSTACK) /* had been handling stack overflow? */ + luaE_freeCI(L); /* free all CIs (list grew because of an error) */ + else + luaE_shrinkCI(L); /* shrink list */ + /* if thread is currently not handling a stack overflow and its + good size is smaller than current size, shrink its stack */ + if (inuse <= (LUAI_MAXSTACK - EXTRC_STACK) && + goodsize < L->stacksize) + luaD_reallocstack(L, goodsize); + else /* don't change stack */ + condmovestack(L,{},{}); /* (change only for debugging) */ +} + + +void luaD_inctop (lua_State *L) { + luaD_checkstack(L, 1); + L->top++; +} + +/* }================================================================== */ + + +/* +** Call a hook for the given event. Make sure there is a hook to be +** called. (Both 'L->hook' and 'L->hookmask', which triggers this +** function, can be changed asynchronously by signals.) +*/ +void luaD_hook (lua_State *L, int event, int line) { + lua_Hook hook = L->hook; + if (hook && L->allowhook) { /* make sure there is a hook */ + CallInfo *ci = L->ci; + ptrdiff_t top = savestack(L, L->top); + ptrdiff_t ci_top = savestack(L, ci->top); + lua_Debug ar; + ar.event = event; + ar.currentline = line; + ar.i_ci = ci; + luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */ + ci->top = L->top + LUA_MINSTACK; + lua_assert(ci->top <= L->stack_last); + L->allowhook = 0; /* cannot call hooks inside a hook */ + ci->callstatus |= CIST_HOOKED; + lua_unlock(L); + (*hook)(L, &ar); + lua_lock(L); + lua_assert(!L->allowhook); + L->allowhook = 1; + ci->top = restorestack(L, ci_top); + L->top = restorestack(L, top); + ci->callstatus &= ~CIST_HOOKED; + } +} + + +static void callhook (lua_State *L, CallInfo *ci) { + int hook = LUA_HOOKCALL; + ci->u.l.savedpc++; /* hooks assume 'pc' is already incremented */ + if (isLua(ci->previous) && + GET_OPCODE(*(ci->previous->u.l.savedpc - 1)) == OP_TAILCALL) { + ci->callstatus |= CIST_TAIL; + hook = LUA_HOOKTAILCALL; + } + luaD_hook(L, hook, -1); + ci->u.l.savedpc--; /* correct 'pc' */ +} + + +static StkId adjust_varargs (lua_State *L, Proto *p, int actual) { + int i; + int nfixargs = p->numparams; + StkId base, fixed; + /* move fixed parameters to final position */ + fixed = L->top - actual; /* first fixed argument */ + base = L->top; /* final position of first argument */ + for (i = 0; i < nfixargs && i < actual; i++) { + setobjs2s(L, L->top++, fixed + i); + setnilvalue(fixed + i); /* erase original copy (for GC) */ + } + for (; i < nfixargs; i++) + setnilvalue(L->top++); /* complete missing arguments */ + return base; +} + + +/* +** Check whether __call metafield of 'func' is a function. If so, put +** it in stack below original 'func' so that 'luaD_precall' can call +** it. Raise an error if __call metafield is not a function. +*/ +static void tryfuncTM (lua_State *L, StkId func) { + const TValue *tm = luaT_gettmbyobj(L, func, TM_CALL); + StkId p; + if (!ttisfunction(tm)) + luaG_typeerror(L, func, "call"); + /* Open a hole inside the stack at 'func' */ + for (p = L->top; p > func; p--) + setobjs2s(L, p, p-1); + L->top++; /* slot ensured by caller */ + setobj2s(L, func, tm); /* tag method is the new function to be called */ +} + + +/* +** Given 'nres' results at 'firstResult', move 'wanted' of them to 'res'. +** Handle most typical cases (zero results for commands, one result for +** expressions, multiple results for tail calls/single parameters) +** separated. +*/ +static int moveresults (lua_State *L, const TValue *firstResult, StkId res, + int nres, int wanted) { + switch (wanted) { /* handle typical cases separately */ + case 0: break; /* nothing to move */ + case 1: { /* one result needed */ + if (nres == 0) /* no results? */ + firstResult = luaO_nilobject; /* adjust with nil */ + setobjs2s(L, res, firstResult); /* move it to proper place */ + break; + } + case LUA_MULTRET: { + int i; + for (i = 0; i < nres; i++) /* move all results to correct place */ + setobjs2s(L, res + i, firstResult + i); + L->top = res + nres; + return 0; /* wanted == LUA_MULTRET */ + } + default: { + int i; + if (wanted <= nres) { /* enough results? */ + for (i = 0; i < wanted; i++) /* move wanted results to correct place */ + setobjs2s(L, res + i, firstResult + i); + } + else { /* not enough results; use all of them plus nils */ + for (i = 0; i < nres; i++) /* move all results to correct place */ + setobjs2s(L, res + i, firstResult + i); + for (; i < wanted; i++) /* complete wanted number of results */ + setnilvalue(res + i); + } + break; + } + } + L->top = res + wanted; /* top points after the last result */ + return 1; +} + + +/* +** Finishes a function call: calls hook if necessary, removes CallInfo, +** moves current number of results to proper place; returns 0 iff call +** wanted multiple (variable number of) results. +*/ +int luaD_poscall (lua_State *L, CallInfo *ci, StkId firstResult, int nres) { + StkId res; + int wanted = ci->nresults; + if (L->hookmask & (LUA_MASKRET | LUA_MASKLINE)) { + if (L->hookmask & LUA_MASKRET) { + ptrdiff_t fr = savestack(L, firstResult); /* hook may change stack */ + luaD_hook(L, LUA_HOOKRET, -1); + firstResult = restorestack(L, fr); + } + L->oldpc = ci->previous->u.l.savedpc; /* 'oldpc' for caller function */ + } + res = ci->func; /* res == final position of 1st result */ + L->ci = ci->previous; /* back to caller */ + /* move results to proper place */ + return moveresults(L, firstResult, res, nres, wanted); +} + + + +#define next_ci(L) (L->ci = (L->ci->next ? L->ci->next : luaE_extendCI(L))) + + +/* macro to check stack size, preserving 'p' */ +#define checkstackp(L,n,p) \ + luaD_checkstackaux(L, n, \ + ptrdiff_t t__ = savestack(L, p); /* save 'p' */ \ + luaC_checkGC(L), /* stack grow uses memory */ \ + p = restorestack(L, t__)) /* 'pos' part: restore 'p' */ + + +/* +** Prepares a function call: checks the stack, creates a new CallInfo +** entry, fills in the relevant information, calls hook if needed. +** If function is a C function, does the call, too. (Otherwise, leave +** the execution ('luaV_execute') to the caller, to allow stackless +** calls.) Returns true iff function has been executed (C function). +*/ +int luaD_precall (lua_State *L, StkId func, int nresults) { + lua_CFunction f; + CallInfo *ci; + switch (ttype(func)) { + case LUA_TCCL: /* C closure */ + f = clCvalue(func)->f; + goto Cfunc; + case LUA_TLCF: /* light C function */ + f = fvalue(func); + Cfunc: { + int n; /* number of returns */ + checkstackp(L, LUA_MINSTACK, func); /* ensure minimum stack size */ + ci = next_ci(L); /* now 'enter' new function */ + ci->nresults = nresults; + ci->func = func; + ci->top = L->top + LUA_MINSTACK; + lua_assert(ci->top <= L->stack_last); + ci->callstatus = 0; + if (L->hookmask & LUA_MASKCALL) + luaD_hook(L, LUA_HOOKCALL, -1); + lua_unlock(L); + n = (*f)(L); /* do the actual call */ + lua_lock(L); + api_checknelems(L, n); + luaD_poscall(L, ci, L->top - n, n); + return 1; + } + case LUA_TLCL: { /* Lua function: prepare its call */ + StkId base; + Proto *p = clLvalue(func)->p; + int n = cast_int(L->top - func) - 1; /* number of real arguments */ + int fsize = p->maxstacksize; /* frame size */ + checkstackp(L, fsize, func); + if (p->is_vararg) + base = adjust_varargs(L, p, n); + else { /* non vararg function */ + for (; n < p->numparams; n++) + setnilvalue(L->top++); /* complete missing arguments */ + base = func + 1; + } + ci = next_ci(L); /* now 'enter' new function */ + ci->nresults = nresults; + ci->func = func; + ci->u.l.base = base; + L->top = ci->top = base + fsize; + lua_assert(ci->top <= L->stack_last); + ci->u.l.savedpc = p->code; /* starting point */ + ci->callstatus = CIST_LUA; + if (L->hookmask & LUA_MASKCALL) + callhook(L, ci); + return 0; + } + default: { /* not a function */ + checkstackp(L, 1, func); /* ensure space for metamethod */ + tryfuncTM(L, func); /* try to get '__call' metamethod */ + return luaD_precall(L, func, nresults); /* now it must be a function */ + } + } +} + + +/* +** Check appropriate error for stack overflow ("regular" overflow or +** overflow while handling stack overflow). If 'nCalls' is larger than +** LUAI_MAXCCALLS (which means it is handling a "regular" overflow) but +** smaller than 9/8 of LUAI_MAXCCALLS, does not report an error (to +** allow overflow handling to work) +*/ +static void stackerror (lua_State *L) { + if (L->nCcalls == LUAI_MAXCCALLS) + luaG_runerror(L, "C stack overflow"); + else if (L->nCcalls >= (LUAI_MAXCCALLS + (LUAI_MAXCCALLS>>3))) + luaD_throw(L, LUA_ERRERR); /* error while handing stack error */ +} + + +/* +** Call a function (C or Lua). The function to be called is at *func. +** The arguments are on the stack, right after the function. +** When returns, all the results are on the stack, starting at the original +** function position. +*/ +void luaD_call (lua_State *L, StkId func, int nResults) { + if (++L->nCcalls >= LUAI_MAXCCALLS) + stackerror(L); + if (!luaD_precall(L, func, nResults)) /* is a Lua function? */ + luaV_execute(L); /* call it */ + L->nCcalls--; +} + + +/* +** Similar to 'luaD_call', but does not allow yields during the call +*/ +void luaD_callnoyield (lua_State *L, StkId func, int nResults) { + L->nny++; + luaD_call(L, func, nResults); + L->nny--; +} + + +/* +** Completes the execution of an interrupted C function, calling its +** continuation function. +*/ +static void finishCcall (lua_State *L, int status) { + CallInfo *ci = L->ci; + int n; + /* must have a continuation and must be able to call it */ + lua_assert(ci->u.c.k != NULL && L->nny == 0); + /* error status can only happen in a protected call */ + lua_assert((ci->callstatus & CIST_YPCALL) || status == LUA_YIELD); + if (ci->callstatus & CIST_YPCALL) { /* was inside a pcall? */ + ci->callstatus &= ~CIST_YPCALL; /* continuation is also inside it */ + L->errfunc = ci->u.c.old_errfunc; /* with the same error function */ + } + /* finish 'lua_callk'/'lua_pcall'; CIST_YPCALL and 'errfunc' already + handled */ + adjustresults(L, ci->nresults); + lua_unlock(L); + n = (*ci->u.c.k)(L, status, ci->u.c.ctx); /* call continuation function */ + lua_lock(L); + api_checknelems(L, n); + luaD_poscall(L, ci, L->top - n, n); /* finish 'luaD_precall' */ +} + + +/* +** Executes "full continuation" (everything in the stack) of a +** previously interrupted coroutine until the stack is empty (or another +** interruption long-jumps out of the loop). If the coroutine is +** recovering from an error, 'ud' points to the error status, which must +** be passed to the first continuation function (otherwise the default +** status is LUA_YIELD). +*/ +static void unroll (lua_State *L, void *ud) { + if (ud != NULL) /* error status? */ + finishCcall(L, *(int *)ud); /* finish 'lua_pcallk' callee */ + while (L->ci != &L->base_ci) { /* something in the stack */ + if (!isLua(L->ci)) /* C function? */ + finishCcall(L, LUA_YIELD); /* complete its execution */ + else { /* Lua function */ + luaV_finishOp(L); /* finish interrupted instruction */ + luaV_execute(L); /* execute down to higher C 'boundary' */ + } + } +} + + +/* +** Try to find a suspended protected call (a "recover point") for the +** given thread. +*/ +static CallInfo *findpcall (lua_State *L) { + CallInfo *ci; + for (ci = L->ci; ci != NULL; ci = ci->previous) { /* search for a pcall */ + if (ci->callstatus & CIST_YPCALL) + return ci; + } + return NULL; /* no pending pcall */ +} + + +/* +** Recovers from an error in a coroutine. Finds a recover point (if +** there is one) and completes the execution of the interrupted +** 'luaD_pcall'. If there is no recover point, returns zero. +*/ +static int recover (lua_State *L, int status) { + StkId oldtop; + CallInfo *ci = findpcall(L); + if (ci == NULL) return 0; /* no recovery point */ + /* "finish" luaD_pcall */ + oldtop = restorestack(L, ci->extra); + luaF_close(L, oldtop); + seterrorobj(L, status, oldtop); + L->ci = ci; + L->allowhook = getoah(ci->callstatus); /* restore original 'allowhook' */ + L->nny = 0; /* should be zero to be yieldable */ + luaD_shrinkstack(L); + L->errfunc = ci->u.c.old_errfunc; + return 1; /* continue running the coroutine */ +} + + +/* +** Signal an error in the call to 'lua_resume', not in the execution +** of the coroutine itself. (Such errors should not be handled by any +** coroutine error handler and should not kill the coroutine.) +*/ +static int resume_error (lua_State *L, const char *msg, int narg) { + L->top -= narg; /* remove args from the stack */ + setsvalue2s(L, L->top, luaS_new(L, msg)); /* push error message */ + api_incr_top(L); + lua_unlock(L); + return LUA_ERRRUN; +} + + +/* +** Do the work for 'lua_resume' in protected mode. Most of the work +** depends on the status of the coroutine: initial state, suspended +** inside a hook, or regularly suspended (optionally with a continuation +** function), plus erroneous cases: non-suspended coroutine or dead +** coroutine. +*/ +static void resume (lua_State *L, void *ud) { + int n = *(cast(int*, ud)); /* number of arguments */ + StkId firstArg = L->top - n; /* first argument */ + CallInfo *ci = L->ci; + if (L->status == LUA_OK) { /* starting a coroutine? */ + if (!luaD_precall(L, firstArg - 1, LUA_MULTRET)) /* Lua function? */ + luaV_execute(L); /* call it */ + } + else { /* resuming from previous yield */ + lua_assert(L->status == LUA_YIELD); + L->status = LUA_OK; /* mark that it is running (again) */ + ci->func = restorestack(L, ci->extra); + if (isLua(ci)) /* yielded inside a hook? */ + luaV_execute(L); /* just continue running Lua code */ + else { /* 'common' yield */ + if (ci->u.c.k != NULL) { /* does it have a continuation function? */ + lua_unlock(L); + n = (*ci->u.c.k)(L, LUA_YIELD, ci->u.c.ctx); /* call continuation */ + lua_lock(L); + api_checknelems(L, n); + firstArg = L->top - n; /* yield results come from continuation */ + } + luaD_poscall(L, ci, firstArg, n); /* finish 'luaD_precall' */ + } + unroll(L, NULL); /* run continuation */ + } +} + + +LUA_API int lua_resume (lua_State *L, lua_State *from, int nargs) { + int status; + unsigned short oldnny = L->nny; /* save "number of non-yieldable" calls */ + lua_lock(L); + if (L->status == LUA_OK) { /* may be starting a coroutine */ + if (L->ci != &L->base_ci) /* not in base level? */ + return resume_error(L, "cannot resume non-suspended coroutine", nargs); + } + else if (L->status != LUA_YIELD) + return resume_error(L, "cannot resume dead coroutine", nargs); + L->nCcalls = (from) ? from->nCcalls + 1 : 1; + if (L->nCcalls >= LUAI_MAXCCALLS) + return resume_error(L, "C stack overflow", nargs); + luai_userstateresume(L, nargs); + L->nny = 0; /* allow yields */ + api_checknelems(L, (L->status == LUA_OK) ? nargs + 1 : nargs); + status = luaD_rawrunprotected(L, resume, &nargs); + if (status == -1) /* error calling 'lua_resume'? */ + status = LUA_ERRRUN; + else { /* continue running after recoverable errors */ + while (errorstatus(status) && recover(L, status)) { + /* unroll continuation */ + status = luaD_rawrunprotected(L, unroll, &status); + } + if (errorstatus(status)) { /* unrecoverable error? */ + L->status = cast_byte(status); /* mark thread as 'dead' */ + seterrorobj(L, status, L->top); /* push error message */ + L->ci->top = L->top; + } + else lua_assert(status == L->status); /* normal end or yield */ + } + L->nny = oldnny; /* restore 'nny' */ + L->nCcalls--; + lua_assert(L->nCcalls == ((from) ? from->nCcalls : 0)); + lua_unlock(L); + return status; +} + + +LUA_API int lua_isyieldable (lua_State *L) { + return (L->nny == 0); +} + + +LUA_API int lua_yieldk (lua_State *L, int nresults, lua_KContext ctx, + lua_KFunction k) { + CallInfo *ci = L->ci; + luai_userstateyield(L, nresults); + lua_lock(L); + api_checknelems(L, nresults); + if (L->nny > 0) { + if (L != G(L)->mainthread) + luaG_runerror(L, "attempt to yield across a C-call boundary"); + else + luaG_runerror(L, "attempt to yield from outside a coroutine"); + } + L->status = LUA_YIELD; + ci->extra = savestack(L, ci->func); /* save current 'func' */ + if (isLua(ci)) { /* inside a hook? */ + api_check(L, k == NULL, "hooks cannot continue after yielding"); + } + else { + if ((ci->u.c.k = k) != NULL) /* is there a continuation? */ + ci->u.c.ctx = ctx; /* save context */ + ci->func = L->top - nresults - 1; /* protect stack below results */ + luaD_throw(L, LUA_YIELD); + } + lua_assert(ci->callstatus & CIST_HOOKED); /* must be inside a hook */ + lua_unlock(L); + return 0; /* return to 'luaD_hook' */ +} + + +int luaD_pcall (lua_State *L, Pfunc func, void *u, + ptrdiff_t old_top, ptrdiff_t ef) { + int status; + CallInfo *old_ci = L->ci; + lu_byte old_allowhooks = L->allowhook; + unsigned short old_nny = L->nny; + ptrdiff_t old_errfunc = L->errfunc; + L->errfunc = ef; + status = luaD_rawrunprotected(L, func, u); + if (status != LUA_OK) { /* an error occurred? */ + StkId oldtop = restorestack(L, old_top); + luaF_close(L, oldtop); /* close possible pending closures */ + seterrorobj(L, status, oldtop); + L->ci = old_ci; + L->allowhook = old_allowhooks; + L->nny = old_nny; + luaD_shrinkstack(L); + } + L->errfunc = old_errfunc; + return status; +} + + + +/* +** Execute a protected parser. +*/ +struct SParser { /* data to 'f_parser' */ + ZIO *z; + Mbuffer buff; /* dynamic structure used by the scanner */ + Dyndata dyd; /* dynamic structures used by the parser */ + const char *mode; + const char *name; +}; + + +static void checkmode (lua_State *L, const char *mode, const char *x) { + if (mode && strchr(mode, x[0]) == NULL) { + luaO_pushfstring(L, + "attempt to load a %s chunk (mode is '%s')", x, mode); + luaD_throw(L, LUA_ERRSYNTAX); + } +} + + +static void f_parser (lua_State *L, void *ud) { + LClosure *cl; + struct SParser *p = cast(struct SParser *, ud); + int c = zgetc(p->z); /* read first character */ + if (c == LUA_SIGNATURE[0]) { + checkmode(L, p->mode, "binary"); + cl = luaU_undump(L, p->z, p->name); + } + else { + checkmode(L, p->mode, "text"); + cl = luaY_parser(L, p->z, &p->buff, &p->dyd, p->name, c); + } + lua_assert(cl->nupvalues == cl->p->sizeupvalues); + luaF_initupvals(L, cl); +} + + +int luaD_protectedparser (lua_State *L, ZIO *z, const char *name, + const char *mode) { + struct SParser p; + int status; + L->nny++; /* cannot yield during parsing */ + p.z = z; p.name = name; p.mode = mode; + p.dyd.actvar.arr = NULL; p.dyd.actvar.size = 0; + p.dyd.gt.arr = NULL; p.dyd.gt.size = 0; + p.dyd.label.arr = NULL; p.dyd.label.size = 0; + luaZ_initbuffer(L, &p.buff); + status = luaD_pcall(L, f_parser, &p, savestack(L, L->top), L->errfunc); + luaZ_freebuffer(L, &p.buff); + luaM_freearray(L, p.dyd.actvar.arr, p.dyd.actvar.size); + luaM_freearray(L, p.dyd.gt.arr, p.dyd.gt.size); + luaM_freearray(L, p.dyd.label.arr, p.dyd.label.size); + L->nny--; + return status; +} + + diff --git a/deps/rcheevos/test/lua/src/ldo.h b/deps/rcheevos/test/lua/src/ldo.h new file mode 100644 index 0000000000..4f5d51c3c7 --- /dev/null +++ b/deps/rcheevos/test/lua/src/ldo.h @@ -0,0 +1,58 @@ +/* +** $Id: ldo.h,v 2.29 2015/12/21 13:02:14 roberto Exp $ +** Stack and Call structure of Lua +** See Copyright Notice in lua.h +*/ + +#ifndef ldo_h +#define ldo_h + + +#include "lobject.h" +#include "lstate.h" +#include "lzio.h" + + +/* +** Macro to check stack size and grow stack if needed. Parameters +** 'pre'/'pos' allow the macro to preserve a pointer into the +** stack across reallocations, doing the work only when needed. +** 'condmovestack' is used in heavy tests to force a stack reallocation +** at every check. +*/ +#define luaD_checkstackaux(L,n,pre,pos) \ + if (L->stack_last - L->top <= (n)) \ + { pre; luaD_growstack(L, n); pos; } else { condmovestack(L,pre,pos); } + +/* In general, 'pre'/'pos' are empty (nothing to save) */ +#define luaD_checkstack(L,n) luaD_checkstackaux(L,n,(void)0,(void)0) + + + +#define savestack(L,p) ((char *)(p) - (char *)L->stack) +#define restorestack(L,n) ((TValue *)((char *)L->stack + (n))) + + +/* type of protected functions, to be ran by 'runprotected' */ +typedef void (*Pfunc) (lua_State *L, void *ud); + +LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name, + const char *mode); +LUAI_FUNC void luaD_hook (lua_State *L, int event, int line); +LUAI_FUNC int luaD_precall (lua_State *L, StkId func, int nresults); +LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults); +LUAI_FUNC void luaD_callnoyield (lua_State *L, StkId func, int nResults); +LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u, + ptrdiff_t oldtop, ptrdiff_t ef); +LUAI_FUNC int luaD_poscall (lua_State *L, CallInfo *ci, StkId firstResult, + int nres); +LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize); +LUAI_FUNC void luaD_growstack (lua_State *L, int n); +LUAI_FUNC void luaD_shrinkstack (lua_State *L); +LUAI_FUNC void luaD_inctop (lua_State *L); + +LUAI_FUNC l_noret luaD_throw (lua_State *L, int errcode); +LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud); + +#endif + diff --git a/deps/rcheevos/test/lua/src/ldump.c b/deps/rcheevos/test/lua/src/ldump.c new file mode 100644 index 0000000000..016e300822 --- /dev/null +++ b/deps/rcheevos/test/lua/src/ldump.c @@ -0,0 +1,215 @@ +/* +** $Id: ldump.c,v 2.37 2015/10/08 15:53:49 roberto Exp $ +** save precompiled Lua chunks +** See Copyright Notice in lua.h +*/ + +#define ldump_c +#define LUA_CORE + +#include "lprefix.h" + + +#include + +#include "lua.h" + +#include "lobject.h" +#include "lstate.h" +#include "lundump.h" + + +typedef struct { + lua_State *L; + lua_Writer writer; + void *data; + int strip; + int status; +} DumpState; + + +/* +** All high-level dumps go through DumpVector; you can change it to +** change the endianness of the result +*/ +#define DumpVector(v,n,D) DumpBlock(v,(n)*sizeof((v)[0]),D) + +#define DumpLiteral(s,D) DumpBlock(s, sizeof(s) - sizeof(char), D) + + +static void DumpBlock (const void *b, size_t size, DumpState *D) { + if (D->status == 0 && size > 0) { + lua_unlock(D->L); + D->status = (*D->writer)(D->L, b, size, D->data); + lua_lock(D->L); + } +} + + +#define DumpVar(x,D) DumpVector(&x,1,D) + + +static void DumpByte (int y, DumpState *D) { + lu_byte x = (lu_byte)y; + DumpVar(x, D); +} + + +static void DumpInt (int x, DumpState *D) { + DumpVar(x, D); +} + + +static void DumpNumber (lua_Number x, DumpState *D) { + DumpVar(x, D); +} + + +static void DumpInteger (lua_Integer x, DumpState *D) { + DumpVar(x, D); +} + + +static void DumpString (const TString *s, DumpState *D) { + if (s == NULL) + DumpByte(0, D); + else { + size_t size = tsslen(s) + 1; /* include trailing '\0' */ + const char *str = getstr(s); + if (size < 0xFF) + DumpByte(cast_int(size), D); + else { + DumpByte(0xFF, D); + DumpVar(size, D); + } + DumpVector(str, size - 1, D); /* no need to save '\0' */ + } +} + + +static void DumpCode (const Proto *f, DumpState *D) { + DumpInt(f->sizecode, D); + DumpVector(f->code, f->sizecode, D); +} + + +static void DumpFunction(const Proto *f, TString *psource, DumpState *D); + +static void DumpConstants (const Proto *f, DumpState *D) { + int i; + int n = f->sizek; + DumpInt(n, D); + for (i = 0; i < n; i++) { + const TValue *o = &f->k[i]; + DumpByte(ttype(o), D); + switch (ttype(o)) { + case LUA_TNIL: + break; + case LUA_TBOOLEAN: + DumpByte(bvalue(o), D); + break; + case LUA_TNUMFLT: + DumpNumber(fltvalue(o), D); + break; + case LUA_TNUMINT: + DumpInteger(ivalue(o), D); + break; + case LUA_TSHRSTR: + case LUA_TLNGSTR: + DumpString(tsvalue(o), D); + break; + default: + lua_assert(0); + } + } +} + + +static void DumpProtos (const Proto *f, DumpState *D) { + int i; + int n = f->sizep; + DumpInt(n, D); + for (i = 0; i < n; i++) + DumpFunction(f->p[i], f->source, D); +} + + +static void DumpUpvalues (const Proto *f, DumpState *D) { + int i, n = f->sizeupvalues; + DumpInt(n, D); + for (i = 0; i < n; i++) { + DumpByte(f->upvalues[i].instack, D); + DumpByte(f->upvalues[i].idx, D); + } +} + + +static void DumpDebug (const Proto *f, DumpState *D) { + int i, n; + n = (D->strip) ? 0 : f->sizelineinfo; + DumpInt(n, D); + DumpVector(f->lineinfo, n, D); + n = (D->strip) ? 0 : f->sizelocvars; + DumpInt(n, D); + for (i = 0; i < n; i++) { + DumpString(f->locvars[i].varname, D); + DumpInt(f->locvars[i].startpc, D); + DumpInt(f->locvars[i].endpc, D); + } + n = (D->strip) ? 0 : f->sizeupvalues; + DumpInt(n, D); + for (i = 0; i < n; i++) + DumpString(f->upvalues[i].name, D); +} + + +static void DumpFunction (const Proto *f, TString *psource, DumpState *D) { + if (D->strip || f->source == psource) + DumpString(NULL, D); /* no debug info or same source as its parent */ + else + DumpString(f->source, D); + DumpInt(f->linedefined, D); + DumpInt(f->lastlinedefined, D); + DumpByte(f->numparams, D); + DumpByte(f->is_vararg, D); + DumpByte(f->maxstacksize, D); + DumpCode(f, D); + DumpConstants(f, D); + DumpUpvalues(f, D); + DumpProtos(f, D); + DumpDebug(f, D); +} + + +static void DumpHeader (DumpState *D) { + DumpLiteral(LUA_SIGNATURE, D); + DumpByte(LUAC_VERSION, D); + DumpByte(LUAC_FORMAT, D); + DumpLiteral(LUAC_DATA, D); + DumpByte(sizeof(int), D); + DumpByte(sizeof(size_t), D); + DumpByte(sizeof(Instruction), D); + DumpByte(sizeof(lua_Integer), D); + DumpByte(sizeof(lua_Number), D); + DumpInteger(LUAC_INT, D); + DumpNumber(LUAC_NUM, D); +} + + +/* +** dump Lua function as precompiled chunk +*/ +int luaU_dump(lua_State *L, const Proto *f, lua_Writer w, void *data, + int strip) { + DumpState D; + D.L = L; + D.writer = w; + D.data = data; + D.strip = strip; + D.status = 0; + DumpHeader(&D); + DumpByte(f->sizeupvalues, &D); + DumpFunction(f, NULL, &D); + return D.status; +} + diff --git a/deps/rcheevos/test/lua/src/lfunc.c b/deps/rcheevos/test/lua/src/lfunc.c new file mode 100644 index 0000000000..67967dab3f --- /dev/null +++ b/deps/rcheevos/test/lua/src/lfunc.c @@ -0,0 +1,151 @@ +/* +** $Id: lfunc.c,v 2.45 2014/11/02 19:19:04 roberto Exp $ +** Auxiliary functions to manipulate prototypes and closures +** See Copyright Notice in lua.h +*/ + +#define lfunc_c +#define LUA_CORE + +#include "lprefix.h" + + +#include + +#include "lua.h" + +#include "lfunc.h" +#include "lgc.h" +#include "lmem.h" +#include "lobject.h" +#include "lstate.h" + + + +CClosure *luaF_newCclosure (lua_State *L, int n) { + GCObject *o = luaC_newobj(L, LUA_TCCL, sizeCclosure(n)); + CClosure *c = gco2ccl(o); + c->nupvalues = cast_byte(n); + return c; +} + + +LClosure *luaF_newLclosure (lua_State *L, int n) { + GCObject *o = luaC_newobj(L, LUA_TLCL, sizeLclosure(n)); + LClosure *c = gco2lcl(o); + c->p = NULL; + c->nupvalues = cast_byte(n); + while (n--) c->upvals[n] = NULL; + return c; +} + +/* +** fill a closure with new closed upvalues +*/ +void luaF_initupvals (lua_State *L, LClosure *cl) { + int i; + for (i = 0; i < cl->nupvalues; i++) { + UpVal *uv = luaM_new(L, UpVal); + uv->refcount = 1; + uv->v = &uv->u.value; /* make it closed */ + setnilvalue(uv->v); + cl->upvals[i] = uv; + } +} + + +UpVal *luaF_findupval (lua_State *L, StkId level) { + UpVal **pp = &L->openupval; + UpVal *p; + UpVal *uv; + lua_assert(isintwups(L) || L->openupval == NULL); + while (*pp != NULL && (p = *pp)->v >= level) { + lua_assert(upisopen(p)); + if (p->v == level) /* found a corresponding upvalue? */ + return p; /* return it */ + pp = &p->u.open.next; + } + /* not found: create a new upvalue */ + uv = luaM_new(L, UpVal); + uv->refcount = 0; + uv->u.open.next = *pp; /* link it to list of open upvalues */ + uv->u.open.touched = 1; + *pp = uv; + uv->v = level; /* current value lives in the stack */ + if (!isintwups(L)) { /* thread not in list of threads with upvalues? */ + L->twups = G(L)->twups; /* link it to the list */ + G(L)->twups = L; + } + return uv; +} + + +void luaF_close (lua_State *L, StkId level) { + UpVal *uv; + while (L->openupval != NULL && (uv = L->openupval)->v >= level) { + lua_assert(upisopen(uv)); + L->openupval = uv->u.open.next; /* remove from 'open' list */ + if (uv->refcount == 0) /* no references? */ + luaM_free(L, uv); /* free upvalue */ + else { + setobj(L, &uv->u.value, uv->v); /* move value to upvalue slot */ + uv->v = &uv->u.value; /* now current value lives here */ + luaC_upvalbarrier(L, uv); + } + } +} + + +Proto *luaF_newproto (lua_State *L) { + GCObject *o = luaC_newobj(L, LUA_TPROTO, sizeof(Proto)); + Proto *f = gco2p(o); + f->k = NULL; + f->sizek = 0; + f->p = NULL; + f->sizep = 0; + f->code = NULL; + f->cache = NULL; + f->sizecode = 0; + f->lineinfo = NULL; + f->sizelineinfo = 0; + f->upvalues = NULL; + f->sizeupvalues = 0; + f->numparams = 0; + f->is_vararg = 0; + f->maxstacksize = 0; + f->locvars = NULL; + f->sizelocvars = 0; + f->linedefined = 0; + f->lastlinedefined = 0; + f->source = NULL; + return f; +} + + +void luaF_freeproto (lua_State *L, Proto *f) { + luaM_freearray(L, f->code, f->sizecode); + luaM_freearray(L, f->p, f->sizep); + luaM_freearray(L, f->k, f->sizek); + luaM_freearray(L, f->lineinfo, f->sizelineinfo); + luaM_freearray(L, f->locvars, f->sizelocvars); + luaM_freearray(L, f->upvalues, f->sizeupvalues); + luaM_free(L, f); +} + + +/* +** Look for n-th local variable at line 'line' in function 'func'. +** Returns NULL if not found. +*/ +const char *luaF_getlocalname (const Proto *f, int local_number, int pc) { + int i; + for (i = 0; isizelocvars && f->locvars[i].startpc <= pc; i++) { + if (pc < f->locvars[i].endpc) { /* is variable active? */ + local_number--; + if (local_number == 0) + return getstr(f->locvars[i].varname); + } + } + return NULL; /* not found */ +} + diff --git a/deps/rcheevos/test/lua/src/lfunc.h b/deps/rcheevos/test/lua/src/lfunc.h new file mode 100644 index 0000000000..2eeb0d5a48 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lfunc.h @@ -0,0 +1,61 @@ +/* +** $Id: lfunc.h,v 2.15 2015/01/13 15:49:11 roberto Exp $ +** Auxiliary functions to manipulate prototypes and closures +** See Copyright Notice in lua.h +*/ + +#ifndef lfunc_h +#define lfunc_h + + +#include "lobject.h" + + +#define sizeCclosure(n) (cast(int, sizeof(CClosure)) + \ + cast(int, sizeof(TValue)*((n)-1))) + +#define sizeLclosure(n) (cast(int, sizeof(LClosure)) + \ + cast(int, sizeof(TValue *)*((n)-1))) + + +/* test whether thread is in 'twups' list */ +#define isintwups(L) (L->twups != L) + + +/* +** maximum number of upvalues in a closure (both C and Lua). (Value +** must fit in a VM register.) +*/ +#define MAXUPVAL 255 + + +/* +** Upvalues for Lua closures +*/ +struct UpVal { + TValue *v; /* points to stack or to its own value */ + lu_mem refcount; /* reference counter */ + union { + struct { /* (when open) */ + UpVal *next; /* linked list */ + int touched; /* mark to avoid cycles with dead threads */ + } open; + TValue value; /* the value (when closed) */ + } u; +}; + +#define upisopen(up) ((up)->v != &(up)->u.value) + + +LUAI_FUNC Proto *luaF_newproto (lua_State *L); +LUAI_FUNC CClosure *luaF_newCclosure (lua_State *L, int nelems); +LUAI_FUNC LClosure *luaF_newLclosure (lua_State *L, int nelems); +LUAI_FUNC void luaF_initupvals (lua_State *L, LClosure *cl); +LUAI_FUNC UpVal *luaF_findupval (lua_State *L, StkId level); +LUAI_FUNC void luaF_close (lua_State *L, StkId level); +LUAI_FUNC void luaF_freeproto (lua_State *L, Proto *f); +LUAI_FUNC const char *luaF_getlocalname (const Proto *func, int local_number, + int pc); + + +#endif diff --git a/deps/rcheevos/test/lua/src/lgc.c b/deps/rcheevos/test/lua/src/lgc.c new file mode 100644 index 0000000000..ba2c19e14e --- /dev/null +++ b/deps/rcheevos/test/lua/src/lgc.c @@ -0,0 +1,1178 @@ +/* +** $Id: lgc.c,v 2.215 2016/12/22 13:08:50 roberto Exp $ +** Garbage Collector +** See Copyright Notice in lua.h +*/ + +#define lgc_c +#define LUA_CORE + +#include "lprefix.h" + + +#include + +#include "lua.h" + +#include "ldebug.h" +#include "ldo.h" +#include "lfunc.h" +#include "lgc.h" +#include "lmem.h" +#include "lobject.h" +#include "lstate.h" +#include "lstring.h" +#include "ltable.h" +#include "ltm.h" + + +/* +** internal state for collector while inside the atomic phase. The +** collector should never be in this state while running regular code. +*/ +#define GCSinsideatomic (GCSpause + 1) + +/* +** cost of sweeping one element (the size of a small object divided +** by some adjust for the sweep speed) +*/ +#define GCSWEEPCOST ((sizeof(TString) + 4) / 4) + +/* maximum number of elements to sweep in each single step */ +#define GCSWEEPMAX (cast_int((GCSTEPSIZE / GCSWEEPCOST) / 4)) + +/* cost of calling one finalizer */ +#define GCFINALIZECOST GCSWEEPCOST + + +/* +** macro to adjust 'stepmul': 'stepmul' is actually used like +** 'stepmul / STEPMULADJ' (value chosen by tests) +*/ +#define STEPMULADJ 200 + + +/* +** macro to adjust 'pause': 'pause' is actually used like +** 'pause / PAUSEADJ' (value chosen by tests) +*/ +#define PAUSEADJ 100 + + +/* +** 'makewhite' erases all color bits then sets only the current white +** bit +*/ +#define maskcolors (~(bitmask(BLACKBIT) | WHITEBITS)) +#define makewhite(g,x) \ + (x->marked = cast_byte((x->marked & maskcolors) | luaC_white(g))) + +#define white2gray(x) resetbits(x->marked, WHITEBITS) +#define black2gray(x) resetbit(x->marked, BLACKBIT) + + +#define valiswhite(x) (iscollectable(x) && iswhite(gcvalue(x))) + +#define checkdeadkey(n) lua_assert(!ttisdeadkey(gkey(n)) || ttisnil(gval(n))) + + +#define checkconsistency(obj) \ + lua_longassert(!iscollectable(obj) || righttt(obj)) + + +#define markvalue(g,o) { checkconsistency(o); \ + if (valiswhite(o)) reallymarkobject(g,gcvalue(o)); } + +#define markobject(g,t) { if (iswhite(t)) reallymarkobject(g, obj2gco(t)); } + +/* +** mark an object that can be NULL (either because it is really optional, +** or it was stripped as debug info, or inside an uncompleted structure) +*/ +#define markobjectN(g,t) { if (t) markobject(g,t); } + +static void reallymarkobject (global_State *g, GCObject *o); + + +/* +** {====================================================== +** Generic functions +** ======================================================= +*/ + + +/* +** one after last element in a hash array +*/ +#define gnodelast(h) gnode(h, cast(size_t, sizenode(h))) + + +/* +** link collectable object 'o' into list pointed by 'p' +*/ +#define linkgclist(o,p) ((o)->gclist = (p), (p) = obj2gco(o)) + + +/* +** If key is not marked, mark its entry as dead. This allows key to be +** collected, but keeps its entry in the table. A dead node is needed +** when Lua looks up for a key (it may be part of a chain) and when +** traversing a weak table (key might be removed from the table during +** traversal). Other places never manipulate dead keys, because its +** associated nil value is enough to signal that the entry is logically +** empty. +*/ +static void removeentry (Node *n) { + lua_assert(ttisnil(gval(n))); + if (valiswhite(gkey(n))) + setdeadvalue(wgkey(n)); /* unused and unmarked key; remove it */ +} + + +/* +** tells whether a key or value can be cleared from a weak +** table. Non-collectable objects are never removed from weak +** tables. Strings behave as 'values', so are never removed too. for +** other objects: if really collected, cannot keep them; for objects +** being finalized, keep them in keys, but not in values +*/ +static int iscleared (global_State *g, const TValue *o) { + if (!iscollectable(o)) return 0; + else if (ttisstring(o)) { + markobject(g, tsvalue(o)); /* strings are 'values', so are never weak */ + return 0; + } + else return iswhite(gcvalue(o)); +} + + +/* +** barrier that moves collector forward, that is, mark the white object +** being pointed by a black object. (If in sweep phase, clear the black +** object to white [sweep it] to avoid other barrier calls for this +** same object.) +*/ +void luaC_barrier_ (lua_State *L, GCObject *o, GCObject *v) { + global_State *g = G(L); + lua_assert(isblack(o) && iswhite(v) && !isdead(g, v) && !isdead(g, o)); + if (keepinvariant(g)) /* must keep invariant? */ + reallymarkobject(g, v); /* restore invariant */ + else { /* sweep phase */ + lua_assert(issweepphase(g)); + makewhite(g, o); /* mark main obj. as white to avoid other barriers */ + } +} + + +/* +** barrier that moves collector backward, that is, mark the black object +** pointing to a white object as gray again. +*/ +void luaC_barrierback_ (lua_State *L, Table *t) { + global_State *g = G(L); + lua_assert(isblack(t) && !isdead(g, t)); + black2gray(t); /* make table gray (again) */ + linkgclist(t, g->grayagain); +} + + +/* +** barrier for assignments to closed upvalues. Because upvalues are +** shared among closures, it is impossible to know the color of all +** closures pointing to it. So, we assume that the object being assigned +** must be marked. +*/ +void luaC_upvalbarrier_ (lua_State *L, UpVal *uv) { + global_State *g = G(L); + GCObject *o = gcvalue(uv->v); + lua_assert(!upisopen(uv)); /* ensured by macro luaC_upvalbarrier */ + if (keepinvariant(g)) + markobject(g, o); +} + + +void luaC_fix (lua_State *L, GCObject *o) { + global_State *g = G(L); + lua_assert(g->allgc == o); /* object must be 1st in 'allgc' list! */ + white2gray(o); /* they will be gray forever */ + g->allgc = o->next; /* remove object from 'allgc' list */ + o->next = g->fixedgc; /* link it to 'fixedgc' list */ + g->fixedgc = o; +} + + +/* +** create a new collectable object (with given type and size) and link +** it to 'allgc' list. +*/ +GCObject *luaC_newobj (lua_State *L, int tt, size_t sz) { + global_State *g = G(L); + GCObject *o = cast(GCObject *, luaM_newobject(L, novariant(tt), sz)); + o->marked = luaC_white(g); + o->tt = tt; + o->next = g->allgc; + g->allgc = o; + return o; +} + +/* }====================================================== */ + + + +/* +** {====================================================== +** Mark functions +** ======================================================= +*/ + + +/* +** mark an object. Userdata, strings, and closed upvalues are visited +** and turned black here. Other objects are marked gray and added +** to appropriate list to be visited (and turned black) later. (Open +** upvalues are already linked in 'headuv' list.) +*/ +static void reallymarkobject (global_State *g, GCObject *o) { + reentry: + white2gray(o); + switch (o->tt) { + case LUA_TSHRSTR: { + gray2black(o); + g->GCmemtrav += sizelstring(gco2ts(o)->shrlen); + break; + } + case LUA_TLNGSTR: { + gray2black(o); + g->GCmemtrav += sizelstring(gco2ts(o)->u.lnglen); + break; + } + case LUA_TUSERDATA: { + TValue uvalue; + markobjectN(g, gco2u(o)->metatable); /* mark its metatable */ + gray2black(o); + g->GCmemtrav += sizeudata(gco2u(o)); + getuservalue(g->mainthread, gco2u(o), &uvalue); + if (valiswhite(&uvalue)) { /* markvalue(g, &uvalue); */ + o = gcvalue(&uvalue); + goto reentry; + } + break; + } + case LUA_TLCL: { + linkgclist(gco2lcl(o), g->gray); + break; + } + case LUA_TCCL: { + linkgclist(gco2ccl(o), g->gray); + break; + } + case LUA_TTABLE: { + linkgclist(gco2t(o), g->gray); + break; + } + case LUA_TTHREAD: { + linkgclist(gco2th(o), g->gray); + break; + } + case LUA_TPROTO: { + linkgclist(gco2p(o), g->gray); + break; + } + default: lua_assert(0); break; + } +} + + +/* +** mark metamethods for basic types +*/ +static void markmt (global_State *g) { + int i; + for (i=0; i < LUA_NUMTAGS; i++) + markobjectN(g, g->mt[i]); +} + + +/* +** mark all objects in list of being-finalized +*/ +static void markbeingfnz (global_State *g) { + GCObject *o; + for (o = g->tobefnz; o != NULL; o = o->next) + markobject(g, o); +} + + +/* +** Mark all values stored in marked open upvalues from non-marked threads. +** (Values from marked threads were already marked when traversing the +** thread.) Remove from the list threads that no longer have upvalues and +** not-marked threads. +*/ +static void remarkupvals (global_State *g) { + lua_State *thread; + lua_State **p = &g->twups; + while ((thread = *p) != NULL) { + lua_assert(!isblack(thread)); /* threads are never black */ + if (isgray(thread) && thread->openupval != NULL) + p = &thread->twups; /* keep marked thread with upvalues in the list */ + else { /* thread is not marked or without upvalues */ + UpVal *uv; + *p = thread->twups; /* remove thread from the list */ + thread->twups = thread; /* mark that it is out of list */ + for (uv = thread->openupval; uv != NULL; uv = uv->u.open.next) { + if (uv->u.open.touched) { + markvalue(g, uv->v); /* remark upvalue's value */ + uv->u.open.touched = 0; + } + } + } + } +} + + +/* +** mark root set and reset all gray lists, to start a new collection +*/ +static void restartcollection (global_State *g) { + g->gray = g->grayagain = NULL; + g->weak = g->allweak = g->ephemeron = NULL; + markobject(g, g->mainthread); + markvalue(g, &g->l_registry); + markmt(g); + markbeingfnz(g); /* mark any finalizing object left from previous cycle */ +} + +/* }====================================================== */ + + +/* +** {====================================================== +** Traverse functions +** ======================================================= +*/ + +/* +** Traverse a table with weak values and link it to proper list. During +** propagate phase, keep it in 'grayagain' list, to be revisited in the +** atomic phase. In the atomic phase, if table has any white value, +** put it in 'weak' list, to be cleared. +*/ +static void traverseweakvalue (global_State *g, Table *h) { + Node *n, *limit = gnodelast(h); + /* if there is array part, assume it may have white values (it is not + worth traversing it now just to check) */ + int hasclears = (h->sizearray > 0); + for (n = gnode(h, 0); n < limit; n++) { /* traverse hash part */ + checkdeadkey(n); + if (ttisnil(gval(n))) /* entry is empty? */ + removeentry(n); /* remove it */ + else { + lua_assert(!ttisnil(gkey(n))); + markvalue(g, gkey(n)); /* mark key */ + if (!hasclears && iscleared(g, gval(n))) /* is there a white value? */ + hasclears = 1; /* table will have to be cleared */ + } + } + if (g->gcstate == GCSpropagate) + linkgclist(h, g->grayagain); /* must retraverse it in atomic phase */ + else if (hasclears) + linkgclist(h, g->weak); /* has to be cleared later */ +} + + +/* +** Traverse an ephemeron table and link it to proper list. Returns true +** iff any object was marked during this traversal (which implies that +** convergence has to continue). During propagation phase, keep table +** in 'grayagain' list, to be visited again in the atomic phase. In +** the atomic phase, if table has any white->white entry, it has to +** be revisited during ephemeron convergence (as that key may turn +** black). Otherwise, if it has any white key, table has to be cleared +** (in the atomic phase). +*/ +static int traverseephemeron (global_State *g, Table *h) { + int marked = 0; /* true if an object is marked in this traversal */ + int hasclears = 0; /* true if table has white keys */ + int hasww = 0; /* true if table has entry "white-key -> white-value" */ + Node *n, *limit = gnodelast(h); + unsigned int i; + /* traverse array part */ + for (i = 0; i < h->sizearray; i++) { + if (valiswhite(&h->array[i])) { + marked = 1; + reallymarkobject(g, gcvalue(&h->array[i])); + } + } + /* traverse hash part */ + for (n = gnode(h, 0); n < limit; n++) { + checkdeadkey(n); + if (ttisnil(gval(n))) /* entry is empty? */ + removeentry(n); /* remove it */ + else if (iscleared(g, gkey(n))) { /* key is not marked (yet)? */ + hasclears = 1; /* table must be cleared */ + if (valiswhite(gval(n))) /* value not marked yet? */ + hasww = 1; /* white-white entry */ + } + else if (valiswhite(gval(n))) { /* value not marked yet? */ + marked = 1; + reallymarkobject(g, gcvalue(gval(n))); /* mark it now */ + } + } + /* link table into proper list */ + if (g->gcstate == GCSpropagate) + linkgclist(h, g->grayagain); /* must retraverse it in atomic phase */ + else if (hasww) /* table has white->white entries? */ + linkgclist(h, g->ephemeron); /* have to propagate again */ + else if (hasclears) /* table has white keys? */ + linkgclist(h, g->allweak); /* may have to clean white keys */ + return marked; +} + + +static void traversestrongtable (global_State *g, Table *h) { + Node *n, *limit = gnodelast(h); + unsigned int i; + for (i = 0; i < h->sizearray; i++) /* traverse array part */ + markvalue(g, &h->array[i]); + for (n = gnode(h, 0); n < limit; n++) { /* traverse hash part */ + checkdeadkey(n); + if (ttisnil(gval(n))) /* entry is empty? */ + removeentry(n); /* remove it */ + else { + lua_assert(!ttisnil(gkey(n))); + markvalue(g, gkey(n)); /* mark key */ + markvalue(g, gval(n)); /* mark value */ + } + } +} + + +static lu_mem traversetable (global_State *g, Table *h) { + const char *weakkey, *weakvalue; + const TValue *mode = gfasttm(g, h->metatable, TM_MODE); + markobjectN(g, h->metatable); + if (mode && ttisstring(mode) && /* is there a weak mode? */ + ((weakkey = strchr(svalue(mode), 'k')), + (weakvalue = strchr(svalue(mode), 'v')), + (weakkey || weakvalue))) { /* is really weak? */ + black2gray(h); /* keep table gray */ + if (!weakkey) /* strong keys? */ + traverseweakvalue(g, h); + else if (!weakvalue) /* strong values? */ + traverseephemeron(g, h); + else /* all weak */ + linkgclist(h, g->allweak); /* nothing to traverse now */ + } + else /* not weak */ + traversestrongtable(g, h); + return sizeof(Table) + sizeof(TValue) * h->sizearray + + sizeof(Node) * cast(size_t, allocsizenode(h)); +} + + +/* +** Traverse a prototype. (While a prototype is being build, its +** arrays can be larger than needed; the extra slots are filled with +** NULL, so the use of 'markobjectN') +*/ +static int traverseproto (global_State *g, Proto *f) { + int i; + if (f->cache && iswhite(f->cache)) + f->cache = NULL; /* allow cache to be collected */ + markobjectN(g, f->source); + for (i = 0; i < f->sizek; i++) /* mark literals */ + markvalue(g, &f->k[i]); + for (i = 0; i < f->sizeupvalues; i++) /* mark upvalue names */ + markobjectN(g, f->upvalues[i].name); + for (i = 0; i < f->sizep; i++) /* mark nested protos */ + markobjectN(g, f->p[i]); + for (i = 0; i < f->sizelocvars; i++) /* mark local-variable names */ + markobjectN(g, f->locvars[i].varname); + return sizeof(Proto) + sizeof(Instruction) * f->sizecode + + sizeof(Proto *) * f->sizep + + sizeof(TValue) * f->sizek + + sizeof(int) * f->sizelineinfo + + sizeof(LocVar) * f->sizelocvars + + sizeof(Upvaldesc) * f->sizeupvalues; +} + + +static lu_mem traverseCclosure (global_State *g, CClosure *cl) { + int i; + for (i = 0; i < cl->nupvalues; i++) /* mark its upvalues */ + markvalue(g, &cl->upvalue[i]); + return sizeCclosure(cl->nupvalues); +} + +/* +** open upvalues point to values in a thread, so those values should +** be marked when the thread is traversed except in the atomic phase +** (because then the value cannot be changed by the thread and the +** thread may not be traversed again) +*/ +static lu_mem traverseLclosure (global_State *g, LClosure *cl) { + int i; + markobjectN(g, cl->p); /* mark its prototype */ + for (i = 0; i < cl->nupvalues; i++) { /* mark its upvalues */ + UpVal *uv = cl->upvals[i]; + if (uv != NULL) { + if (upisopen(uv) && g->gcstate != GCSinsideatomic) + uv->u.open.touched = 1; /* can be marked in 'remarkupvals' */ + else + markvalue(g, uv->v); + } + } + return sizeLclosure(cl->nupvalues); +} + + +static lu_mem traversethread (global_State *g, lua_State *th) { + StkId o = th->stack; + if (o == NULL) + return 1; /* stack not completely built yet */ + lua_assert(g->gcstate == GCSinsideatomic || + th->openupval == NULL || isintwups(th)); + for (; o < th->top; o++) /* mark live elements in the stack */ + markvalue(g, o); + if (g->gcstate == GCSinsideatomic) { /* final traversal? */ + StkId lim = th->stack + th->stacksize; /* real end of stack */ + for (; o < lim; o++) /* clear not-marked stack slice */ + setnilvalue(o); + /* 'remarkupvals' may have removed thread from 'twups' list */ + if (!isintwups(th) && th->openupval != NULL) { + th->twups = g->twups; /* link it back to the list */ + g->twups = th; + } + } + else if (g->gckind != KGC_EMERGENCY) + luaD_shrinkstack(th); /* do not change stack in emergency cycle */ + return (sizeof(lua_State) + sizeof(TValue) * th->stacksize + + sizeof(CallInfo) * th->nci); +} + + +/* +** traverse one gray object, turning it to black (except for threads, +** which are always gray). +*/ +static void propagatemark (global_State *g) { + lu_mem size; + GCObject *o = g->gray; + lua_assert(isgray(o)); + gray2black(o); + switch (o->tt) { + case LUA_TTABLE: { + Table *h = gco2t(o); + g->gray = h->gclist; /* remove from 'gray' list */ + size = traversetable(g, h); + break; + } + case LUA_TLCL: { + LClosure *cl = gco2lcl(o); + g->gray = cl->gclist; /* remove from 'gray' list */ + size = traverseLclosure(g, cl); + break; + } + case LUA_TCCL: { + CClosure *cl = gco2ccl(o); + g->gray = cl->gclist; /* remove from 'gray' list */ + size = traverseCclosure(g, cl); + break; + } + case LUA_TTHREAD: { + lua_State *th = gco2th(o); + g->gray = th->gclist; /* remove from 'gray' list */ + linkgclist(th, g->grayagain); /* insert into 'grayagain' list */ + black2gray(o); + size = traversethread(g, th); + break; + } + case LUA_TPROTO: { + Proto *p = gco2p(o); + g->gray = p->gclist; /* remove from 'gray' list */ + size = traverseproto(g, p); + break; + } + default: lua_assert(0); return; + } + g->GCmemtrav += size; +} + + +static void propagateall (global_State *g) { + while (g->gray) propagatemark(g); +} + + +static void convergeephemerons (global_State *g) { + int changed; + do { + GCObject *w; + GCObject *next = g->ephemeron; /* get ephemeron list */ + g->ephemeron = NULL; /* tables may return to this list when traversed */ + changed = 0; + while ((w = next) != NULL) { + next = gco2t(w)->gclist; + if (traverseephemeron(g, gco2t(w))) { /* traverse marked some value? */ + propagateall(g); /* propagate changes */ + changed = 1; /* will have to revisit all ephemeron tables */ + } + } + } while (changed); +} + +/* }====================================================== */ + + +/* +** {====================================================== +** Sweep Functions +** ======================================================= +*/ + + +/* +** clear entries with unmarked keys from all weaktables in list 'l' up +** to element 'f' +*/ +static void clearkeys (global_State *g, GCObject *l, GCObject *f) { + for (; l != f; l = gco2t(l)->gclist) { + Table *h = gco2t(l); + Node *n, *limit = gnodelast(h); + for (n = gnode(h, 0); n < limit; n++) { + if (!ttisnil(gval(n)) && (iscleared(g, gkey(n)))) { + setnilvalue(gval(n)); /* remove value ... */ + removeentry(n); /* and remove entry from table */ + } + } + } +} + + +/* +** clear entries with unmarked values from all weaktables in list 'l' up +** to element 'f' +*/ +static void clearvalues (global_State *g, GCObject *l, GCObject *f) { + for (; l != f; l = gco2t(l)->gclist) { + Table *h = gco2t(l); + Node *n, *limit = gnodelast(h); + unsigned int i; + for (i = 0; i < h->sizearray; i++) { + TValue *o = &h->array[i]; + if (iscleared(g, o)) /* value was collected? */ + setnilvalue(o); /* remove value */ + } + for (n = gnode(h, 0); n < limit; n++) { + if (!ttisnil(gval(n)) && iscleared(g, gval(n))) { + setnilvalue(gval(n)); /* remove value ... */ + removeentry(n); /* and remove entry from table */ + } + } + } +} + + +void luaC_upvdeccount (lua_State *L, UpVal *uv) { + lua_assert(uv->refcount > 0); + uv->refcount--; + if (uv->refcount == 0 && !upisopen(uv)) + luaM_free(L, uv); +} + + +static void freeLclosure (lua_State *L, LClosure *cl) { + int i; + for (i = 0; i < cl->nupvalues; i++) { + UpVal *uv = cl->upvals[i]; + if (uv) + luaC_upvdeccount(L, uv); + } + luaM_freemem(L, cl, sizeLclosure(cl->nupvalues)); +} + + +static void freeobj (lua_State *L, GCObject *o) { + switch (o->tt) { + case LUA_TPROTO: luaF_freeproto(L, gco2p(o)); break; + case LUA_TLCL: { + freeLclosure(L, gco2lcl(o)); + break; + } + case LUA_TCCL: { + luaM_freemem(L, o, sizeCclosure(gco2ccl(o)->nupvalues)); + break; + } + case LUA_TTABLE: luaH_free(L, gco2t(o)); break; + case LUA_TTHREAD: luaE_freethread(L, gco2th(o)); break; + case LUA_TUSERDATA: luaM_freemem(L, o, sizeudata(gco2u(o))); break; + case LUA_TSHRSTR: + luaS_remove(L, gco2ts(o)); /* remove it from hash table */ + luaM_freemem(L, o, sizelstring(gco2ts(o)->shrlen)); + break; + case LUA_TLNGSTR: { + luaM_freemem(L, o, sizelstring(gco2ts(o)->u.lnglen)); + break; + } + default: lua_assert(0); + } +} + + +#define sweepwholelist(L,p) sweeplist(L,p,MAX_LUMEM) +static GCObject **sweeplist (lua_State *L, GCObject **p, lu_mem count); + + +/* +** sweep at most 'count' elements from a list of GCObjects erasing dead +** objects, where a dead object is one marked with the old (non current) +** white; change all non-dead objects back to white, preparing for next +** collection cycle. Return where to continue the traversal or NULL if +** list is finished. +*/ +static GCObject **sweeplist (lua_State *L, GCObject **p, lu_mem count) { + global_State *g = G(L); + int ow = otherwhite(g); + int white = luaC_white(g); /* current white */ + while (*p != NULL && count-- > 0) { + GCObject *curr = *p; + int marked = curr->marked; + if (isdeadm(ow, marked)) { /* is 'curr' dead? */ + *p = curr->next; /* remove 'curr' from list */ + freeobj(L, curr); /* erase 'curr' */ + } + else { /* change mark to 'white' */ + curr->marked = cast_byte((marked & maskcolors) | white); + p = &curr->next; /* go to next element */ + } + } + return (*p == NULL) ? NULL : p; +} + + +/* +** sweep a list until a live object (or end of list) +*/ +static GCObject **sweeptolive (lua_State *L, GCObject **p) { + GCObject **old = p; + do { + p = sweeplist(L, p, 1); + } while (p == old); + return p; +} + +/* }====================================================== */ + + +/* +** {====================================================== +** Finalization +** ======================================================= +*/ + +/* +** If possible, shrink string table +*/ +static void checkSizes (lua_State *L, global_State *g) { + if (g->gckind != KGC_EMERGENCY) { + l_mem olddebt = g->GCdebt; + if (g->strt.nuse < g->strt.size / 4) /* string table too big? */ + luaS_resize(L, g->strt.size / 2); /* shrink it a little */ + g->GCestimate += g->GCdebt - olddebt; /* update estimate */ + } +} + + +static GCObject *udata2finalize (global_State *g) { + GCObject *o = g->tobefnz; /* get first element */ + lua_assert(tofinalize(o)); + g->tobefnz = o->next; /* remove it from 'tobefnz' list */ + o->next = g->allgc; /* return it to 'allgc' list */ + g->allgc = o; + resetbit(o->marked, FINALIZEDBIT); /* object is "normal" again */ + if (issweepphase(g)) + makewhite(g, o); /* "sweep" object */ + return o; +} + + +static void dothecall (lua_State *L, void *ud) { + UNUSED(ud); + luaD_callnoyield(L, L->top - 2, 0); +} + + +static void GCTM (lua_State *L, int propagateerrors) { + global_State *g = G(L); + const TValue *tm; + TValue v; + setgcovalue(L, &v, udata2finalize(g)); + tm = luaT_gettmbyobj(L, &v, TM_GC); + if (tm != NULL && ttisfunction(tm)) { /* is there a finalizer? */ + int status; + lu_byte oldah = L->allowhook; + int running = g->gcrunning; + L->allowhook = 0; /* stop debug hooks during GC metamethod */ + g->gcrunning = 0; /* avoid GC steps */ + setobj2s(L, L->top, tm); /* push finalizer... */ + setobj2s(L, L->top + 1, &v); /* ... and its argument */ + L->top += 2; /* and (next line) call the finalizer */ + L->ci->callstatus |= CIST_FIN; /* will run a finalizer */ + status = luaD_pcall(L, dothecall, NULL, savestack(L, L->top - 2), 0); + L->ci->callstatus &= ~CIST_FIN; /* not running a finalizer anymore */ + L->allowhook = oldah; /* restore hooks */ + g->gcrunning = running; /* restore state */ + if (status != LUA_OK && propagateerrors) { /* error while running __gc? */ + if (status == LUA_ERRRUN) { /* is there an error object? */ + const char *msg = (ttisstring(L->top - 1)) + ? svalue(L->top - 1) + : "no message"; + luaO_pushfstring(L, "error in __gc metamethod (%s)", msg); + status = LUA_ERRGCMM; /* error in __gc metamethod */ + } + luaD_throw(L, status); /* re-throw error */ + } + } +} + + +/* +** call a few (up to 'g->gcfinnum') finalizers +*/ +static int runafewfinalizers (lua_State *L) { + global_State *g = G(L); + unsigned int i; + lua_assert(!g->tobefnz || g->gcfinnum > 0); + for (i = 0; g->tobefnz && i < g->gcfinnum; i++) + GCTM(L, 1); /* call one finalizer */ + g->gcfinnum = (!g->tobefnz) ? 0 /* nothing more to finalize? */ + : g->gcfinnum * 2; /* else call a few more next time */ + return i; +} + + +/* +** call all pending finalizers +*/ +static void callallpendingfinalizers (lua_State *L) { + global_State *g = G(L); + while (g->tobefnz) + GCTM(L, 0); +} + + +/* +** find last 'next' field in list 'p' list (to add elements in its end) +*/ +static GCObject **findlast (GCObject **p) { + while (*p != NULL) + p = &(*p)->next; + return p; +} + + +/* +** move all unreachable objects (or 'all' objects) that need +** finalization from list 'finobj' to list 'tobefnz' (to be finalized) +*/ +static void separatetobefnz (global_State *g, int all) { + GCObject *curr; + GCObject **p = &g->finobj; + GCObject **lastnext = findlast(&g->tobefnz); + while ((curr = *p) != NULL) { /* traverse all finalizable objects */ + lua_assert(tofinalize(curr)); + if (!(iswhite(curr) || all)) /* not being collected? */ + p = &curr->next; /* don't bother with it */ + else { + *p = curr->next; /* remove 'curr' from 'finobj' list */ + curr->next = *lastnext; /* link at the end of 'tobefnz' list */ + *lastnext = curr; + lastnext = &curr->next; + } + } +} + + +/* +** if object 'o' has a finalizer, remove it from 'allgc' list (must +** search the list to find it) and link it in 'finobj' list. +*/ +void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt) { + global_State *g = G(L); + if (tofinalize(o) || /* obj. is already marked... */ + gfasttm(g, mt, TM_GC) == NULL) /* or has no finalizer? */ + return; /* nothing to be done */ + else { /* move 'o' to 'finobj' list */ + GCObject **p; + if (issweepphase(g)) { + makewhite(g, o); /* "sweep" object 'o' */ + if (g->sweepgc == &o->next) /* should not remove 'sweepgc' object */ + g->sweepgc = sweeptolive(L, g->sweepgc); /* change 'sweepgc' */ + } + /* search for pointer pointing to 'o' */ + for (p = &g->allgc; *p != o; p = &(*p)->next) { /* empty */ } + *p = o->next; /* remove 'o' from 'allgc' list */ + o->next = g->finobj; /* link it in 'finobj' list */ + g->finobj = o; + l_setbit(o->marked, FINALIZEDBIT); /* mark it as such */ + } +} + +/* }====================================================== */ + + + +/* +** {====================================================== +** GC control +** ======================================================= +*/ + + +/* +** Set a reasonable "time" to wait before starting a new GC cycle; cycle +** will start when memory use hits threshold. (Division by 'estimate' +** should be OK: it cannot be zero (because Lua cannot even start with +** less than PAUSEADJ bytes). +*/ +static void setpause (global_State *g) { + l_mem threshold, debt; + l_mem estimate = g->GCestimate / PAUSEADJ; /* adjust 'estimate' */ + lua_assert(estimate > 0); + threshold = (g->gcpause < MAX_LMEM / estimate) /* overflow? */ + ? estimate * g->gcpause /* no overflow */ + : MAX_LMEM; /* overflow; truncate to maximum */ + debt = gettotalbytes(g) - threshold; + luaE_setdebt(g, debt); +} + + +/* +** Enter first sweep phase. +** The call to 'sweeplist' tries to make pointer point to an object +** inside the list (instead of to the header), so that the real sweep do +** not need to skip objects created between "now" and the start of the +** real sweep. +*/ +static void entersweep (lua_State *L) { + global_State *g = G(L); + g->gcstate = GCSswpallgc; + lua_assert(g->sweepgc == NULL); + g->sweepgc = sweeplist(L, &g->allgc, 1); +} + + +void luaC_freeallobjects (lua_State *L) { + global_State *g = G(L); + separatetobefnz(g, 1); /* separate all objects with finalizers */ + lua_assert(g->finobj == NULL); + callallpendingfinalizers(L); + lua_assert(g->tobefnz == NULL); + g->currentwhite = WHITEBITS; /* this "white" makes all objects look dead */ + g->gckind = KGC_NORMAL; + sweepwholelist(L, &g->finobj); + sweepwholelist(L, &g->allgc); + sweepwholelist(L, &g->fixedgc); /* collect fixed objects */ + lua_assert(g->strt.nuse == 0); +} + + +static l_mem atomic (lua_State *L) { + global_State *g = G(L); + l_mem work; + GCObject *origweak, *origall; + GCObject *grayagain = g->grayagain; /* save original list */ + lua_assert(g->ephemeron == NULL && g->weak == NULL); + lua_assert(!iswhite(g->mainthread)); + g->gcstate = GCSinsideatomic; + g->GCmemtrav = 0; /* start counting work */ + markobject(g, L); /* mark running thread */ + /* registry and global metatables may be changed by API */ + markvalue(g, &g->l_registry); + markmt(g); /* mark global metatables */ + /* remark occasional upvalues of (maybe) dead threads */ + remarkupvals(g); + propagateall(g); /* propagate changes */ + work = g->GCmemtrav; /* stop counting (do not recount 'grayagain') */ + g->gray = grayagain; + propagateall(g); /* traverse 'grayagain' list */ + g->GCmemtrav = 0; /* restart counting */ + convergeephemerons(g); + /* at this point, all strongly accessible objects are marked. */ + /* Clear values from weak tables, before checking finalizers */ + clearvalues(g, g->weak, NULL); + clearvalues(g, g->allweak, NULL); + origweak = g->weak; origall = g->allweak; + work += g->GCmemtrav; /* stop counting (objects being finalized) */ + separatetobefnz(g, 0); /* separate objects to be finalized */ + g->gcfinnum = 1; /* there may be objects to be finalized */ + markbeingfnz(g); /* mark objects that will be finalized */ + propagateall(g); /* remark, to propagate 'resurrection' */ + g->GCmemtrav = 0; /* restart counting */ + convergeephemerons(g); + /* at this point, all resurrected objects are marked. */ + /* remove dead objects from weak tables */ + clearkeys(g, g->ephemeron, NULL); /* clear keys from all ephemeron tables */ + clearkeys(g, g->allweak, NULL); /* clear keys from all 'allweak' tables */ + /* clear values from resurrected weak tables */ + clearvalues(g, g->weak, origweak); + clearvalues(g, g->allweak, origall); + luaS_clearcache(g); + g->currentwhite = cast_byte(otherwhite(g)); /* flip current white */ + work += g->GCmemtrav; /* complete counting */ + return work; /* estimate of memory marked by 'atomic' */ +} + + +static lu_mem sweepstep (lua_State *L, global_State *g, + int nextstate, GCObject **nextlist) { + if (g->sweepgc) { + l_mem olddebt = g->GCdebt; + g->sweepgc = sweeplist(L, g->sweepgc, GCSWEEPMAX); + g->GCestimate += g->GCdebt - olddebt; /* update estimate */ + if (g->sweepgc) /* is there still something to sweep? */ + return (GCSWEEPMAX * GCSWEEPCOST); + } + /* else enter next state */ + g->gcstate = nextstate; + g->sweepgc = nextlist; + return 0; +} + + +static lu_mem singlestep (lua_State *L) { + global_State *g = G(L); + switch (g->gcstate) { + case GCSpause: { + g->GCmemtrav = g->strt.size * sizeof(GCObject*); + restartcollection(g); + g->gcstate = GCSpropagate; + return g->GCmemtrav; + } + case GCSpropagate: { + g->GCmemtrav = 0; + lua_assert(g->gray); + propagatemark(g); + if (g->gray == NULL) /* no more gray objects? */ + g->gcstate = GCSatomic; /* finish propagate phase */ + return g->GCmemtrav; /* memory traversed in this step */ + } + case GCSatomic: { + lu_mem work; + propagateall(g); /* make sure gray list is empty */ + work = atomic(L); /* work is what was traversed by 'atomic' */ + entersweep(L); + g->GCestimate = gettotalbytes(g); /* first estimate */; + return work; + } + case GCSswpallgc: { /* sweep "regular" objects */ + return sweepstep(L, g, GCSswpfinobj, &g->finobj); + } + case GCSswpfinobj: { /* sweep objects with finalizers */ + return sweepstep(L, g, GCSswptobefnz, &g->tobefnz); + } + case GCSswptobefnz: { /* sweep objects to be finalized */ + return sweepstep(L, g, GCSswpend, NULL); + } + case GCSswpend: { /* finish sweeps */ + makewhite(g, g->mainthread); /* sweep main thread */ + checkSizes(L, g); + g->gcstate = GCScallfin; + return 0; + } + case GCScallfin: { /* call remaining finalizers */ + if (g->tobefnz && g->gckind != KGC_EMERGENCY) { + int n = runafewfinalizers(L); + return (n * GCFINALIZECOST); + } + else { /* emergency mode or no more finalizers */ + g->gcstate = GCSpause; /* finish collection */ + return 0; + } + } + default: lua_assert(0); return 0; + } +} + + +/* +** advances the garbage collector until it reaches a state allowed +** by 'statemask' +*/ +void luaC_runtilstate (lua_State *L, int statesmask) { + global_State *g = G(L); + while (!testbit(statesmask, g->gcstate)) + singlestep(L); +} + + +/* +** get GC debt and convert it from Kb to 'work units' (avoid zero debt +** and overflows) +*/ +static l_mem getdebt (global_State *g) { + l_mem debt = g->GCdebt; + int stepmul = g->gcstepmul; + if (debt <= 0) return 0; /* minimal debt */ + else { + debt = (debt / STEPMULADJ) + 1; + debt = (debt < MAX_LMEM / stepmul) ? debt * stepmul : MAX_LMEM; + return debt; + } +} + +/* +** performs a basic GC step when collector is running +*/ +void luaC_step (lua_State *L) { + global_State *g = G(L); + l_mem debt = getdebt(g); /* GC deficit (be paid now) */ + if (!g->gcrunning) { /* not running? */ + luaE_setdebt(g, -GCSTEPSIZE * 10); /* avoid being called too often */ + return; + } + do { /* repeat until pause or enough "credit" (negative debt) */ + lu_mem work = singlestep(L); /* perform one single step */ + debt -= work; + } while (debt > -GCSTEPSIZE && g->gcstate != GCSpause); + if (g->gcstate == GCSpause) + setpause(g); /* pause until next cycle */ + else { + debt = (debt / g->gcstepmul) * STEPMULADJ; /* convert 'work units' to Kb */ + luaE_setdebt(g, debt); + runafewfinalizers(L); + } +} + + +/* +** Performs a full GC cycle; if 'isemergency', set a flag to avoid +** some operations which could change the interpreter state in some +** unexpected ways (running finalizers and shrinking some structures). +** Before running the collection, check 'keepinvariant'; if it is true, +** there may be some objects marked as black, so the collector has +** to sweep all objects to turn them back to white (as white has not +** changed, nothing will be collected). +*/ +void luaC_fullgc (lua_State *L, int isemergency) { + global_State *g = G(L); + lua_assert(g->gckind == KGC_NORMAL); + if (isemergency) g->gckind = KGC_EMERGENCY; /* set flag */ + if (keepinvariant(g)) { /* black objects? */ + entersweep(L); /* sweep everything to turn them back to white */ + } + /* finish any pending sweep phase to start a new cycle */ + luaC_runtilstate(L, bitmask(GCSpause)); + luaC_runtilstate(L, ~bitmask(GCSpause)); /* start new collection */ + luaC_runtilstate(L, bitmask(GCScallfin)); /* run up to finalizers */ + /* estimate must be correct after a full GC cycle */ + lua_assert(g->GCestimate == gettotalbytes(g)); + luaC_runtilstate(L, bitmask(GCSpause)); /* finish collection */ + g->gckind = KGC_NORMAL; + setpause(g); +} + +/* }====================================================== */ + + diff --git a/deps/rcheevos/test/lua/src/lgc.h b/deps/rcheevos/test/lua/src/lgc.h new file mode 100644 index 0000000000..aed3e18a5f --- /dev/null +++ b/deps/rcheevos/test/lua/src/lgc.h @@ -0,0 +1,147 @@ +/* +** $Id: lgc.h,v 2.91 2015/12/21 13:02:14 roberto Exp $ +** Garbage Collector +** See Copyright Notice in lua.h +*/ + +#ifndef lgc_h +#define lgc_h + + +#include "lobject.h" +#include "lstate.h" + +/* +** Collectable objects may have one of three colors: white, which +** means the object is not marked; gray, which means the +** object is marked, but its references may be not marked; and +** black, which means that the object and all its references are marked. +** The main invariant of the garbage collector, while marking objects, +** is that a black object can never point to a white one. Moreover, +** any gray object must be in a "gray list" (gray, grayagain, weak, +** allweak, ephemeron) so that it can be visited again before finishing +** the collection cycle. These lists have no meaning when the invariant +** is not being enforced (e.g., sweep phase). +*/ + + + +/* how much to allocate before next GC step */ +#if !defined(GCSTEPSIZE) +/* ~100 small strings */ +#define GCSTEPSIZE (cast_int(100 * sizeof(TString))) +#endif + + +/* +** Possible states of the Garbage Collector +*/ +#define GCSpropagate 0 +#define GCSatomic 1 +#define GCSswpallgc 2 +#define GCSswpfinobj 3 +#define GCSswptobefnz 4 +#define GCSswpend 5 +#define GCScallfin 6 +#define GCSpause 7 + + +#define issweepphase(g) \ + (GCSswpallgc <= (g)->gcstate && (g)->gcstate <= GCSswpend) + + +/* +** macro to tell when main invariant (white objects cannot point to black +** ones) must be kept. During a collection, the sweep +** phase may break the invariant, as objects turned white may point to +** still-black objects. The invariant is restored when sweep ends and +** all objects are white again. +*/ + +#define keepinvariant(g) ((g)->gcstate <= GCSatomic) + + +/* +** some useful bit tricks +*/ +#define resetbits(x,m) ((x) &= cast(lu_byte, ~(m))) +#define setbits(x,m) ((x) |= (m)) +#define testbits(x,m) ((x) & (m)) +#define bitmask(b) (1<<(b)) +#define bit2mask(b1,b2) (bitmask(b1) | bitmask(b2)) +#define l_setbit(x,b) setbits(x, bitmask(b)) +#define resetbit(x,b) resetbits(x, bitmask(b)) +#define testbit(x,b) testbits(x, bitmask(b)) + + +/* Layout for bit use in 'marked' field: */ +#define WHITE0BIT 0 /* object is white (type 0) */ +#define WHITE1BIT 1 /* object is white (type 1) */ +#define BLACKBIT 2 /* object is black */ +#define FINALIZEDBIT 3 /* object has been marked for finalization */ +/* bit 7 is currently used by tests (luaL_checkmemory) */ + +#define WHITEBITS bit2mask(WHITE0BIT, WHITE1BIT) + + +#define iswhite(x) testbits((x)->marked, WHITEBITS) +#define isblack(x) testbit((x)->marked, BLACKBIT) +#define isgray(x) /* neither white nor black */ \ + (!testbits((x)->marked, WHITEBITS | bitmask(BLACKBIT))) + +#define tofinalize(x) testbit((x)->marked, FINALIZEDBIT) + +#define otherwhite(g) ((g)->currentwhite ^ WHITEBITS) +#define isdeadm(ow,m) (!(((m) ^ WHITEBITS) & (ow))) +#define isdead(g,v) isdeadm(otherwhite(g), (v)->marked) + +#define changewhite(x) ((x)->marked ^= WHITEBITS) +#define gray2black(x) l_setbit((x)->marked, BLACKBIT) + +#define luaC_white(g) cast(lu_byte, (g)->currentwhite & WHITEBITS) + + +/* +** Does one step of collection when debt becomes positive. 'pre'/'pos' +** allows some adjustments to be done only when needed. macro +** 'condchangemem' is used only for heavy tests (forcing a full +** GC cycle on every opportunity) +*/ +#define luaC_condGC(L,pre,pos) \ + { if (G(L)->GCdebt > 0) { pre; luaC_step(L); pos;}; \ + condchangemem(L,pre,pos); } + +/* more often than not, 'pre'/'pos' are empty */ +#define luaC_checkGC(L) luaC_condGC(L,(void)0,(void)0) + + +#define luaC_barrier(L,p,v) ( \ + (iscollectable(v) && isblack(p) && iswhite(gcvalue(v))) ? \ + luaC_barrier_(L,obj2gco(p),gcvalue(v)) : cast_void(0)) + +#define luaC_barrierback(L,p,v) ( \ + (iscollectable(v) && isblack(p) && iswhite(gcvalue(v))) ? \ + luaC_barrierback_(L,p) : cast_void(0)) + +#define luaC_objbarrier(L,p,o) ( \ + (isblack(p) && iswhite(o)) ? \ + luaC_barrier_(L,obj2gco(p),obj2gco(o)) : cast_void(0)) + +#define luaC_upvalbarrier(L,uv) ( \ + (iscollectable((uv)->v) && !upisopen(uv)) ? \ + luaC_upvalbarrier_(L,uv) : cast_void(0)) + +LUAI_FUNC void luaC_fix (lua_State *L, GCObject *o); +LUAI_FUNC void luaC_freeallobjects (lua_State *L); +LUAI_FUNC void luaC_step (lua_State *L); +LUAI_FUNC void luaC_runtilstate (lua_State *L, int statesmask); +LUAI_FUNC void luaC_fullgc (lua_State *L, int isemergency); +LUAI_FUNC GCObject *luaC_newobj (lua_State *L, int tt, size_t sz); +LUAI_FUNC void luaC_barrier_ (lua_State *L, GCObject *o, GCObject *v); +LUAI_FUNC void luaC_barrierback_ (lua_State *L, Table *o); +LUAI_FUNC void luaC_upvalbarrier_ (lua_State *L, UpVal *uv); +LUAI_FUNC void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt); +LUAI_FUNC void luaC_upvdeccount (lua_State *L, UpVal *uv); + + +#endif diff --git a/deps/rcheevos/test/lua/src/linit.c b/deps/rcheevos/test/lua/src/linit.c new file mode 100644 index 0000000000..afcaf98b24 --- /dev/null +++ b/deps/rcheevos/test/lua/src/linit.c @@ -0,0 +1,68 @@ +/* +** $Id: linit.c,v 1.39 2016/12/04 20:17:24 roberto Exp $ +** Initialization of libraries for lua.c and other clients +** See Copyright Notice in lua.h +*/ + + +#define linit_c +#define LUA_LIB + +/* +** If you embed Lua in your program and need to open the standard +** libraries, call luaL_openlibs in your program. If you need a +** different set of libraries, copy this file to your project and edit +** it to suit your needs. +** +** You can also *preload* libraries, so that a later 'require' can +** open the library, which is already linked to the application. +** For that, do the following code: +** +** luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE); +** lua_pushcfunction(L, luaopen_modname); +** lua_setfield(L, -2, modname); +** lua_pop(L, 1); // remove PRELOAD table +*/ + +#include "lprefix.h" + + +#include + +#include "lua.h" + +#include "lualib.h" +#include "lauxlib.h" + + +/* +** these libs are loaded by lua.c and are readily available to any Lua +** program +*/ +static const luaL_Reg loadedlibs[] = { + {"_G", luaopen_base}, + {LUA_LOADLIBNAME, luaopen_package}, + {LUA_COLIBNAME, luaopen_coroutine}, + {LUA_TABLIBNAME, luaopen_table}, + {LUA_IOLIBNAME, luaopen_io}, + {LUA_OSLIBNAME, luaopen_os}, + {LUA_STRLIBNAME, luaopen_string}, + {LUA_MATHLIBNAME, luaopen_math}, + {LUA_UTF8LIBNAME, luaopen_utf8}, + {LUA_DBLIBNAME, luaopen_debug}, +#if defined(LUA_COMPAT_BITLIB) + {LUA_BITLIBNAME, luaopen_bit32}, +#endif + {NULL, NULL} +}; + + +LUALIB_API void luaL_openlibs (lua_State *L) { + const luaL_Reg *lib; + /* "require" functions from 'loadedlibs' and set results to global table */ + for (lib = loadedlibs; lib->func; lib++) { + luaL_requiref(L, lib->name, lib->func, 1); + lua_pop(L, 1); /* remove lib */ + } +} + diff --git a/deps/rcheevos/test/lua/src/liolib.c b/deps/rcheevos/test/lua/src/liolib.c new file mode 100644 index 0000000000..156840358d --- /dev/null +++ b/deps/rcheevos/test/lua/src/liolib.c @@ -0,0 +1,771 @@ +/* +** $Id: liolib.c,v 2.151 2016/12/20 18:37:00 roberto Exp $ +** Standard I/O (and system) library +** See Copyright Notice in lua.h +*/ + +#define liolib_c +#define LUA_LIB + +#include "lprefix.h" + + +#include +#include +#include +#include +#include +#include + +#include "lua.h" + +#include "lauxlib.h" +#include "lualib.h" + + + + +/* +** Change this macro to accept other modes for 'fopen' besides +** the standard ones. +*/ +#if !defined(l_checkmode) + +/* accepted extensions to 'mode' in 'fopen' */ +#if !defined(L_MODEEXT) +#define L_MODEEXT "b" +#endif + +/* Check whether 'mode' matches '[rwa]%+?[L_MODEEXT]*' */ +static int l_checkmode (const char *mode) { + return (*mode != '\0' && strchr("rwa", *(mode++)) != NULL && + (*mode != '+' || (++mode, 1)) && /* skip if char is '+' */ + (strspn(mode, L_MODEEXT) == strlen(mode))); /* check extensions */ +} + +#endif + +/* +** {====================================================== +** l_popen spawns a new process connected to the current +** one through the file streams. +** ======================================================= +*/ + +#if !defined(l_popen) /* { */ + +#if defined(LUA_USE_POSIX) /* { */ + +#define l_popen(L,c,m) (fflush(NULL), popen(c,m)) +#define l_pclose(L,file) (pclose(file)) + +#elif defined(LUA_USE_WINDOWS) /* }{ */ + +#define l_popen(L,c,m) (_popen(c,m)) +#define l_pclose(L,file) (_pclose(file)) + +#else /* }{ */ + +/* ISO C definitions */ +#define l_popen(L,c,m) \ + ((void)((void)c, m), \ + luaL_error(L, "'popen' not supported"), \ + (FILE*)0) +#define l_pclose(L,file) ((void)L, (void)file, -1) + +#endif /* } */ + +#endif /* } */ + +/* }====================================================== */ + + +#if !defined(l_getc) /* { */ + +#if defined(LUA_USE_POSIX) +#define l_getc(f) getc_unlocked(f) +#define l_lockfile(f) flockfile(f) +#define l_unlockfile(f) funlockfile(f) +#else +#define l_getc(f) getc(f) +#define l_lockfile(f) ((void)0) +#define l_unlockfile(f) ((void)0) +#endif + +#endif /* } */ + + +/* +** {====================================================== +** l_fseek: configuration for longer offsets +** ======================================================= +*/ + +#if !defined(l_fseek) /* { */ + +#if defined(LUA_USE_POSIX) /* { */ + +#include + +#define l_fseek(f,o,w) fseeko(f,o,w) +#define l_ftell(f) ftello(f) +#define l_seeknum off_t + +#elif defined(LUA_USE_WINDOWS) && !defined(_CRTIMP_TYPEINFO) \ + && defined(_MSC_VER) && (_MSC_VER >= 1400) /* }{ */ + +/* Windows (but not DDK) and Visual C++ 2005 or higher */ +#define l_fseek(f,o,w) _fseeki64(f,o,w) +#define l_ftell(f) _ftelli64(f) +#define l_seeknum __int64 + +#else /* }{ */ + +/* ISO C definitions */ +#define l_fseek(f,o,w) fseek(f,o,w) +#define l_ftell(f) ftell(f) +#define l_seeknum long + +#endif /* } */ + +#endif /* } */ + +/* }====================================================== */ + + +#define IO_PREFIX "_IO_" +#define IOPREF_LEN (sizeof(IO_PREFIX)/sizeof(char) - 1) +#define IO_INPUT (IO_PREFIX "input") +#define IO_OUTPUT (IO_PREFIX "output") + + +typedef luaL_Stream LStream; + + +#define tolstream(L) ((LStream *)luaL_checkudata(L, 1, LUA_FILEHANDLE)) + +#define isclosed(p) ((p)->closef == NULL) + + +static int io_type (lua_State *L) { + LStream *p; + luaL_checkany(L, 1); + p = (LStream *)luaL_testudata(L, 1, LUA_FILEHANDLE); + if (p == NULL) + lua_pushnil(L); /* not a file */ + else if (isclosed(p)) + lua_pushliteral(L, "closed file"); + else + lua_pushliteral(L, "file"); + return 1; +} + + +static int f_tostring (lua_State *L) { + LStream *p = tolstream(L); + if (isclosed(p)) + lua_pushliteral(L, "file (closed)"); + else + lua_pushfstring(L, "file (%p)", p->f); + return 1; +} + + +static FILE *tofile (lua_State *L) { + LStream *p = tolstream(L); + if (isclosed(p)) + luaL_error(L, "attempt to use a closed file"); + lua_assert(p->f); + return p->f; +} + + +/* +** When creating file handles, always creates a 'closed' file handle +** before opening the actual file; so, if there is a memory error, the +** handle is in a consistent state. +*/ +static LStream *newprefile (lua_State *L) { + LStream *p = (LStream *)lua_newuserdata(L, sizeof(LStream)); + p->closef = NULL; /* mark file handle as 'closed' */ + luaL_setmetatable(L, LUA_FILEHANDLE); + return p; +} + + +/* +** Calls the 'close' function from a file handle. The 'volatile' avoids +** a bug in some versions of the Clang compiler (e.g., clang 3.0 for +** 32 bits). +*/ +static int aux_close (lua_State *L) { + LStream *p = tolstream(L); + volatile lua_CFunction cf = p->closef; + p->closef = NULL; /* mark stream as closed */ + return (*cf)(L); /* close it */ +} + + +static int io_close (lua_State *L) { + if (lua_isnone(L, 1)) /* no argument? */ + lua_getfield(L, LUA_REGISTRYINDEX, IO_OUTPUT); /* use standard output */ + tofile(L); /* make sure argument is an open stream */ + return aux_close(L); +} + + +static int f_gc (lua_State *L) { + LStream *p = tolstream(L); + if (!isclosed(p) && p->f != NULL) + aux_close(L); /* ignore closed and incompletely open files */ + return 0; +} + + +/* +** function to close regular files +*/ +static int io_fclose (lua_State *L) { + LStream *p = tolstream(L); + int res = fclose(p->f); + return luaL_fileresult(L, (res == 0), NULL); +} + + +static LStream *newfile (lua_State *L) { + LStream *p = newprefile(L); + p->f = NULL; + p->closef = &io_fclose; + return p; +} + + +static void opencheck (lua_State *L, const char *fname, const char *mode) { + LStream *p = newfile(L); + p->f = fopen(fname, mode); + if (p->f == NULL) + luaL_error(L, "cannot open file '%s' (%s)", fname, strerror(errno)); +} + + +static int io_open (lua_State *L) { + const char *filename = luaL_checkstring(L, 1); + const char *mode = luaL_optstring(L, 2, "r"); + LStream *p = newfile(L); + const char *md = mode; /* to traverse/check mode */ + luaL_argcheck(L, l_checkmode(md), 2, "invalid mode"); + p->f = fopen(filename, mode); + return (p->f == NULL) ? luaL_fileresult(L, 0, filename) : 1; +} + + +/* +** function to close 'popen' files +*/ +static int io_pclose (lua_State *L) { + LStream *p = tolstream(L); + return luaL_execresult(L, l_pclose(L, p->f)); +} + + +static int io_popen (lua_State *L) { + const char *filename = luaL_checkstring(L, 1); + const char *mode = luaL_optstring(L, 2, "r"); + LStream *p = newprefile(L); + p->f = l_popen(L, filename, mode); + p->closef = &io_pclose; + return (p->f == NULL) ? luaL_fileresult(L, 0, filename) : 1; +} + + +static int io_tmpfile (lua_State *L) { + LStream *p = newfile(L); + p->f = tmpfile(); + return (p->f == NULL) ? luaL_fileresult(L, 0, NULL) : 1; +} + + +static FILE *getiofile (lua_State *L, const char *findex) { + LStream *p; + lua_getfield(L, LUA_REGISTRYINDEX, findex); + p = (LStream *)lua_touserdata(L, -1); + if (isclosed(p)) + luaL_error(L, "standard %s file is closed", findex + IOPREF_LEN); + return p->f; +} + + +static int g_iofile (lua_State *L, const char *f, const char *mode) { + if (!lua_isnoneornil(L, 1)) { + const char *filename = lua_tostring(L, 1); + if (filename) + opencheck(L, filename, mode); + else { + tofile(L); /* check that it's a valid file handle */ + lua_pushvalue(L, 1); + } + lua_setfield(L, LUA_REGISTRYINDEX, f); + } + /* return current value */ + lua_getfield(L, LUA_REGISTRYINDEX, f); + return 1; +} + + +static int io_input (lua_State *L) { + return g_iofile(L, IO_INPUT, "r"); +} + + +static int io_output (lua_State *L) { + return g_iofile(L, IO_OUTPUT, "w"); +} + + +static int io_readline (lua_State *L); + + +/* +** maximum number of arguments to 'f:lines'/'io.lines' (it + 3 must fit +** in the limit for upvalues of a closure) +*/ +#define MAXARGLINE 250 + +static void aux_lines (lua_State *L, int toclose) { + int n = lua_gettop(L) - 1; /* number of arguments to read */ + luaL_argcheck(L, n <= MAXARGLINE, MAXARGLINE + 2, "too many arguments"); + lua_pushinteger(L, n); /* number of arguments to read */ + lua_pushboolean(L, toclose); /* close/not close file when finished */ + lua_rotate(L, 2, 2); /* move 'n' and 'toclose' to their positions */ + lua_pushcclosure(L, io_readline, 3 + n); +} + + +static int f_lines (lua_State *L) { + tofile(L); /* check that it's a valid file handle */ + aux_lines(L, 0); + return 1; +} + + +static int io_lines (lua_State *L) { + int toclose; + if (lua_isnone(L, 1)) lua_pushnil(L); /* at least one argument */ + if (lua_isnil(L, 1)) { /* no file name? */ + lua_getfield(L, LUA_REGISTRYINDEX, IO_INPUT); /* get default input */ + lua_replace(L, 1); /* put it at index 1 */ + tofile(L); /* check that it's a valid file handle */ + toclose = 0; /* do not close it after iteration */ + } + else { /* open a new file */ + const char *filename = luaL_checkstring(L, 1); + opencheck(L, filename, "r"); + lua_replace(L, 1); /* put file at index 1 */ + toclose = 1; /* close it after iteration */ + } + aux_lines(L, toclose); + return 1; +} + + +/* +** {====================================================== +** READ +** ======================================================= +*/ + + +/* maximum length of a numeral */ +#if !defined (L_MAXLENNUM) +#define L_MAXLENNUM 200 +#endif + + +/* auxiliary structure used by 'read_number' */ +typedef struct { + FILE *f; /* file being read */ + int c; /* current character (look ahead) */ + int n; /* number of elements in buffer 'buff' */ + char buff[L_MAXLENNUM + 1]; /* +1 for ending '\0' */ +} RN; + + +/* +** Add current char to buffer (if not out of space) and read next one +*/ +static int nextc (RN *rn) { + if (rn->n >= L_MAXLENNUM) { /* buffer overflow? */ + rn->buff[0] = '\0'; /* invalidate result */ + return 0; /* fail */ + } + else { + rn->buff[rn->n++] = rn->c; /* save current char */ + rn->c = l_getc(rn->f); /* read next one */ + return 1; + } +} + + +/* +** Accept current char if it is in 'set' (of size 2) +*/ +static int test2 (RN *rn, const char *set) { + if (rn->c == set[0] || rn->c == set[1]) + return nextc(rn); + else return 0; +} + + +/* +** Read a sequence of (hex)digits +*/ +static int readdigits (RN *rn, int hex) { + int count = 0; + while ((hex ? isxdigit(rn->c) : isdigit(rn->c)) && nextc(rn)) + count++; + return count; +} + + +/* +** Read a number: first reads a valid prefix of a numeral into a buffer. +** Then it calls 'lua_stringtonumber' to check whether the format is +** correct and to convert it to a Lua number +*/ +static int read_number (lua_State *L, FILE *f) { + RN rn; + int count = 0; + int hex = 0; + char decp[2]; + rn.f = f; rn.n = 0; + decp[0] = lua_getlocaledecpoint(); /* get decimal point from locale */ + decp[1] = '.'; /* always accept a dot */ + l_lockfile(rn.f); + do { rn.c = l_getc(rn.f); } while (isspace(rn.c)); /* skip spaces */ + test2(&rn, "-+"); /* optional signal */ + if (test2(&rn, "00")) { + if (test2(&rn, "xX")) hex = 1; /* numeral is hexadecimal */ + else count = 1; /* count initial '0' as a valid digit */ + } + count += readdigits(&rn, hex); /* integral part */ + if (test2(&rn, decp)) /* decimal point? */ + count += readdigits(&rn, hex); /* fractional part */ + if (count > 0 && test2(&rn, (hex ? "pP" : "eE"))) { /* exponent mark? */ + test2(&rn, "-+"); /* exponent signal */ + readdigits(&rn, 0); /* exponent digits */ + } + ungetc(rn.c, rn.f); /* unread look-ahead char */ + l_unlockfile(rn.f); + rn.buff[rn.n] = '\0'; /* finish string */ + if (lua_stringtonumber(L, rn.buff)) /* is this a valid number? */ + return 1; /* ok */ + else { /* invalid format */ + lua_pushnil(L); /* "result" to be removed */ + return 0; /* read fails */ + } +} + + +static int test_eof (lua_State *L, FILE *f) { + int c = getc(f); + ungetc(c, f); /* no-op when c == EOF */ + lua_pushliteral(L, ""); + return (c != EOF); +} + + +static int read_line (lua_State *L, FILE *f, int chop) { + luaL_Buffer b; + int c = '\0'; + luaL_buffinit(L, &b); + while (c != EOF && c != '\n') { /* repeat until end of line */ + char *buff = luaL_prepbuffer(&b); /* preallocate buffer */ + int i = 0; + l_lockfile(f); /* no memory errors can happen inside the lock */ + while (i < LUAL_BUFFERSIZE && (c = l_getc(f)) != EOF && c != '\n') + buff[i++] = c; + l_unlockfile(f); + luaL_addsize(&b, i); + } + if (!chop && c == '\n') /* want a newline and have one? */ + luaL_addchar(&b, c); /* add ending newline to result */ + luaL_pushresult(&b); /* close buffer */ + /* return ok if read something (either a newline or something else) */ + return (c == '\n' || lua_rawlen(L, -1) > 0); +} + + +static void read_all (lua_State *L, FILE *f) { + size_t nr; + luaL_Buffer b; + luaL_buffinit(L, &b); + do { /* read file in chunks of LUAL_BUFFERSIZE bytes */ + char *p = luaL_prepbuffer(&b); + nr = fread(p, sizeof(char), LUAL_BUFFERSIZE, f); + luaL_addsize(&b, nr); + } while (nr == LUAL_BUFFERSIZE); + luaL_pushresult(&b); /* close buffer */ +} + + +static int read_chars (lua_State *L, FILE *f, size_t n) { + size_t nr; /* number of chars actually read */ + char *p; + luaL_Buffer b; + luaL_buffinit(L, &b); + p = luaL_prepbuffsize(&b, n); /* prepare buffer to read whole block */ + nr = fread(p, sizeof(char), n, f); /* try to read 'n' chars */ + luaL_addsize(&b, nr); + luaL_pushresult(&b); /* close buffer */ + return (nr > 0); /* true iff read something */ +} + + +static int g_read (lua_State *L, FILE *f, int first) { + int nargs = lua_gettop(L) - 1; + int success; + int n; + clearerr(f); + if (nargs == 0) { /* no arguments? */ + success = read_line(L, f, 1); + n = first+1; /* to return 1 result */ + } + else { /* ensure stack space for all results and for auxlib's buffer */ + luaL_checkstack(L, nargs+LUA_MINSTACK, "too many arguments"); + success = 1; + for (n = first; nargs-- && success; n++) { + if (lua_type(L, n) == LUA_TNUMBER) { + size_t l = (size_t)luaL_checkinteger(L, n); + success = (l == 0) ? test_eof(L, f) : read_chars(L, f, l); + } + else { + const char *p = luaL_checkstring(L, n); + if (*p == '*') p++; /* skip optional '*' (for compatibility) */ + switch (*p) { + case 'n': /* number */ + success = read_number(L, f); + break; + case 'l': /* line */ + success = read_line(L, f, 1); + break; + case 'L': /* line with end-of-line */ + success = read_line(L, f, 0); + break; + case 'a': /* file */ + read_all(L, f); /* read entire file */ + success = 1; /* always success */ + break; + default: + return luaL_argerror(L, n, "invalid format"); + } + } + } + } + if (ferror(f)) + return luaL_fileresult(L, 0, NULL); + if (!success) { + lua_pop(L, 1); /* remove last result */ + lua_pushnil(L); /* push nil instead */ + } + return n - first; +} + + +static int io_read (lua_State *L) { + return g_read(L, getiofile(L, IO_INPUT), 1); +} + + +static int f_read (lua_State *L) { + return g_read(L, tofile(L), 2); +} + + +static int io_readline (lua_State *L) { + LStream *p = (LStream *)lua_touserdata(L, lua_upvalueindex(1)); + int i; + int n = (int)lua_tointeger(L, lua_upvalueindex(2)); + if (isclosed(p)) /* file is already closed? */ + return luaL_error(L, "file is already closed"); + lua_settop(L , 1); + luaL_checkstack(L, n, "too many arguments"); + for (i = 1; i <= n; i++) /* push arguments to 'g_read' */ + lua_pushvalue(L, lua_upvalueindex(3 + i)); + n = g_read(L, p->f, 2); /* 'n' is number of results */ + lua_assert(n > 0); /* should return at least a nil */ + if (lua_toboolean(L, -n)) /* read at least one value? */ + return n; /* return them */ + else { /* first result is nil: EOF or error */ + if (n > 1) { /* is there error information? */ + /* 2nd result is error message */ + return luaL_error(L, "%s", lua_tostring(L, -n + 1)); + } + if (lua_toboolean(L, lua_upvalueindex(3))) { /* generator created file? */ + lua_settop(L, 0); + lua_pushvalue(L, lua_upvalueindex(1)); + aux_close(L); /* close it */ + } + return 0; + } +} + +/* }====================================================== */ + + +static int g_write (lua_State *L, FILE *f, int arg) { + int nargs = lua_gettop(L) - arg; + int status = 1; + for (; nargs--; arg++) { + if (lua_type(L, arg) == LUA_TNUMBER) { + /* optimization: could be done exactly as for strings */ + int len = lua_isinteger(L, arg) + ? fprintf(f, LUA_INTEGER_FMT, + (LUAI_UACINT)lua_tointeger(L, arg)) + : fprintf(f, LUA_NUMBER_FMT, + (LUAI_UACNUMBER)lua_tonumber(L, arg)); + status = status && (len > 0); + } + else { + size_t l; + const char *s = luaL_checklstring(L, arg, &l); + status = status && (fwrite(s, sizeof(char), l, f) == l); + } + } + if (status) return 1; /* file handle already on stack top */ + else return luaL_fileresult(L, status, NULL); +} + + +static int io_write (lua_State *L) { + return g_write(L, getiofile(L, IO_OUTPUT), 1); +} + + +static int f_write (lua_State *L) { + FILE *f = tofile(L); + lua_pushvalue(L, 1); /* push file at the stack top (to be returned) */ + return g_write(L, f, 2); +} + + +static int f_seek (lua_State *L) { + static const int mode[] = {SEEK_SET, SEEK_CUR, SEEK_END}; + static const char *const modenames[] = {"set", "cur", "end", NULL}; + FILE *f = tofile(L); + int op = luaL_checkoption(L, 2, "cur", modenames); + lua_Integer p3 = luaL_optinteger(L, 3, 0); + l_seeknum offset = (l_seeknum)p3; + luaL_argcheck(L, (lua_Integer)offset == p3, 3, + "not an integer in proper range"); + op = l_fseek(f, offset, mode[op]); + if (op) + return luaL_fileresult(L, 0, NULL); /* error */ + else { + lua_pushinteger(L, (lua_Integer)l_ftell(f)); + return 1; + } +} + + +static int f_setvbuf (lua_State *L) { + static const int mode[] = {_IONBF, _IOFBF, _IOLBF}; + static const char *const modenames[] = {"no", "full", "line", NULL}; + FILE *f = tofile(L); + int op = luaL_checkoption(L, 2, NULL, modenames); + lua_Integer sz = luaL_optinteger(L, 3, LUAL_BUFFERSIZE); + int res = setvbuf(f, NULL, mode[op], (size_t)sz); + return luaL_fileresult(L, res == 0, NULL); +} + + + +static int io_flush (lua_State *L) { + return luaL_fileresult(L, fflush(getiofile(L, IO_OUTPUT)) == 0, NULL); +} + + +static int f_flush (lua_State *L) { + return luaL_fileresult(L, fflush(tofile(L)) == 0, NULL); +} + + +/* +** functions for 'io' library +*/ +static const luaL_Reg iolib[] = { + {"close", io_close}, + {"flush", io_flush}, + {"input", io_input}, + {"lines", io_lines}, + {"open", io_open}, + {"output", io_output}, + {"popen", io_popen}, + {"read", io_read}, + {"tmpfile", io_tmpfile}, + {"type", io_type}, + {"write", io_write}, + {NULL, NULL} +}; + + +/* +** methods for file handles +*/ +static const luaL_Reg flib[] = { + {"close", io_close}, + {"flush", f_flush}, + {"lines", f_lines}, + {"read", f_read}, + {"seek", f_seek}, + {"setvbuf", f_setvbuf}, + {"write", f_write}, + {"__gc", f_gc}, + {"__tostring", f_tostring}, + {NULL, NULL} +}; + + +static void createmeta (lua_State *L) { + luaL_newmetatable(L, LUA_FILEHANDLE); /* create metatable for file handles */ + lua_pushvalue(L, -1); /* push metatable */ + lua_setfield(L, -2, "__index"); /* metatable.__index = metatable */ + luaL_setfuncs(L, flib, 0); /* add file methods to new metatable */ + lua_pop(L, 1); /* pop new metatable */ +} + + +/* +** function to (not) close the standard files stdin, stdout, and stderr +*/ +static int io_noclose (lua_State *L) { + LStream *p = tolstream(L); + p->closef = &io_noclose; /* keep file opened */ + lua_pushnil(L); + lua_pushliteral(L, "cannot close standard file"); + return 2; +} + + +static void createstdfile (lua_State *L, FILE *f, const char *k, + const char *fname) { + LStream *p = newprefile(L); + p->f = f; + p->closef = &io_noclose; + if (k != NULL) { + lua_pushvalue(L, -1); + lua_setfield(L, LUA_REGISTRYINDEX, k); /* add file to registry */ + } + lua_setfield(L, -2, fname); /* add file to module */ +} + + +LUAMOD_API int luaopen_io (lua_State *L) { + luaL_newlib(L, iolib); /* new module */ + createmeta(L); + /* create (and set) default files */ + createstdfile(L, stdin, IO_INPUT, "stdin"); + createstdfile(L, stdout, IO_OUTPUT, "stdout"); + createstdfile(L, stderr, NULL, "stderr"); + return 1; +} + diff --git a/deps/rcheevos/test/lua/src/llex.c b/deps/rcheevos/test/lua/src/llex.c new file mode 100644 index 0000000000..70328273f7 --- /dev/null +++ b/deps/rcheevos/test/lua/src/llex.c @@ -0,0 +1,565 @@ +/* +** $Id: llex.c,v 2.96 2016/05/02 14:02:12 roberto Exp $ +** Lexical Analyzer +** See Copyright Notice in lua.h +*/ + +#define llex_c +#define LUA_CORE + +#include "lprefix.h" + + +#include +#include + +#include "lua.h" + +#include "lctype.h" +#include "ldebug.h" +#include "ldo.h" +#include "lgc.h" +#include "llex.h" +#include "lobject.h" +#include "lparser.h" +#include "lstate.h" +#include "lstring.h" +#include "ltable.h" +#include "lzio.h" + + + +#define next(ls) (ls->current = zgetc(ls->z)) + + + +#define currIsNewline(ls) (ls->current == '\n' || ls->current == '\r') + + +/* ORDER RESERVED */ +static const char *const luaX_tokens [] = { + "and", "break", "do", "else", "elseif", + "end", "false", "for", "function", "goto", "if", + "in", "local", "nil", "not", "or", "repeat", + "return", "then", "true", "until", "while", + "//", "..", "...", "==", ">=", "<=", "~=", + "<<", ">>", "::", "", + "", "", "", "" +}; + + +#define save_and_next(ls) (save(ls, ls->current), next(ls)) + + +static l_noret lexerror (LexState *ls, const char *msg, int token); + + +static void save (LexState *ls, int c) { + Mbuffer *b = ls->buff; + if (luaZ_bufflen(b) + 1 > luaZ_sizebuffer(b)) { + size_t newsize; + if (luaZ_sizebuffer(b) >= MAX_SIZE/2) + lexerror(ls, "lexical element too long", 0); + newsize = luaZ_sizebuffer(b) * 2; + luaZ_resizebuffer(ls->L, b, newsize); + } + b->buffer[luaZ_bufflen(b)++] = cast(char, c); +} + + +void luaX_init (lua_State *L) { + int i; + TString *e = luaS_newliteral(L, LUA_ENV); /* create env name */ + luaC_fix(L, obj2gco(e)); /* never collect this name */ + for (i=0; iextra = cast_byte(i+1); /* reserved word */ + } +} + + +const char *luaX_token2str (LexState *ls, int token) { + if (token < FIRST_RESERVED) { /* single-byte symbols? */ + lua_assert(token == cast_uchar(token)); + return luaO_pushfstring(ls->L, "'%c'", token); + } + else { + const char *s = luaX_tokens[token - FIRST_RESERVED]; + if (token < TK_EOS) /* fixed format (symbols and reserved words)? */ + return luaO_pushfstring(ls->L, "'%s'", s); + else /* names, strings, and numerals */ + return s; + } +} + + +static const char *txtToken (LexState *ls, int token) { + switch (token) { + case TK_NAME: case TK_STRING: + case TK_FLT: case TK_INT: + save(ls, '\0'); + return luaO_pushfstring(ls->L, "'%s'", luaZ_buffer(ls->buff)); + default: + return luaX_token2str(ls, token); + } +} + + +static l_noret lexerror (LexState *ls, const char *msg, int token) { + msg = luaG_addinfo(ls->L, msg, ls->source, ls->linenumber); + if (token) + luaO_pushfstring(ls->L, "%s near %s", msg, txtToken(ls, token)); + luaD_throw(ls->L, LUA_ERRSYNTAX); +} + + +l_noret luaX_syntaxerror (LexState *ls, const char *msg) { + lexerror(ls, msg, ls->t.token); +} + + +/* +** creates a new string and anchors it in scanner's table so that +** it will not be collected until the end of the compilation +** (by that time it should be anchored somewhere) +*/ +TString *luaX_newstring (LexState *ls, const char *str, size_t l) { + lua_State *L = ls->L; + TValue *o; /* entry for 'str' */ + TString *ts = luaS_newlstr(L, str, l); /* create new string */ + setsvalue2s(L, L->top++, ts); /* temporarily anchor it in stack */ + o = luaH_set(L, ls->h, L->top - 1); + if (ttisnil(o)) { /* not in use yet? */ + /* boolean value does not need GC barrier; + table has no metatable, so it does not need to invalidate cache */ + setbvalue(o, 1); /* t[string] = true */ + luaC_checkGC(L); + } + else { /* string already present */ + ts = tsvalue(keyfromval(o)); /* re-use value previously stored */ + } + L->top--; /* remove string from stack */ + return ts; +} + + +/* +** increment line number and skips newline sequence (any of +** \n, \r, \n\r, or \r\n) +*/ +static void inclinenumber (LexState *ls) { + int old = ls->current; + lua_assert(currIsNewline(ls)); + next(ls); /* skip '\n' or '\r' */ + if (currIsNewline(ls) && ls->current != old) + next(ls); /* skip '\n\r' or '\r\n' */ + if (++ls->linenumber >= MAX_INT) + lexerror(ls, "chunk has too many lines", 0); +} + + +void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, TString *source, + int firstchar) { + ls->t.token = 0; + ls->L = L; + ls->current = firstchar; + ls->lookahead.token = TK_EOS; /* no look-ahead token */ + ls->z = z; + ls->fs = NULL; + ls->linenumber = 1; + ls->lastline = 1; + ls->source = source; + ls->envn = luaS_newliteral(L, LUA_ENV); /* get env name */ + luaZ_resizebuffer(ls->L, ls->buff, LUA_MINBUFFER); /* initialize buffer */ +} + + + +/* +** ======================================================= +** LEXICAL ANALYZER +** ======================================================= +*/ + + +static int check_next1 (LexState *ls, int c) { + if (ls->current == c) { + next(ls); + return 1; + } + else return 0; +} + + +/* +** Check whether current char is in set 'set' (with two chars) and +** saves it +*/ +static int check_next2 (LexState *ls, const char *set) { + lua_assert(set[2] == '\0'); + if (ls->current == set[0] || ls->current == set[1]) { + save_and_next(ls); + return 1; + } + else return 0; +} + + +/* LUA_NUMBER */ +/* +** this function is quite liberal in what it accepts, as 'luaO_str2num' +** will reject ill-formed numerals. +*/ +static int read_numeral (LexState *ls, SemInfo *seminfo) { + TValue obj; + const char *expo = "Ee"; + int first = ls->current; + lua_assert(lisdigit(ls->current)); + save_and_next(ls); + if (first == '0' && check_next2(ls, "xX")) /* hexadecimal? */ + expo = "Pp"; + for (;;) { + if (check_next2(ls, expo)) /* exponent part? */ + check_next2(ls, "-+"); /* optional exponent sign */ + if (lisxdigit(ls->current)) + save_and_next(ls); + else if (ls->current == '.') + save_and_next(ls); + else break; + } + save(ls, '\0'); + if (luaO_str2num(luaZ_buffer(ls->buff), &obj) == 0) /* format error? */ + lexerror(ls, "malformed number", TK_FLT); + if (ttisinteger(&obj)) { + seminfo->i = ivalue(&obj); + return TK_INT; + } + else { + lua_assert(ttisfloat(&obj)); + seminfo->r = fltvalue(&obj); + return TK_FLT; + } +} + + +/* +** skip a sequence '[=*[' or ']=*]'; if sequence is well formed, return +** its number of '='s; otherwise, return a negative number (-1 iff there +** are no '='s after initial bracket) +*/ +static int skip_sep (LexState *ls) { + int count = 0; + int s = ls->current; + lua_assert(s == '[' || s == ']'); + save_and_next(ls); + while (ls->current == '=') { + save_and_next(ls); + count++; + } + return (ls->current == s) ? count : (-count) - 1; +} + + +static void read_long_string (LexState *ls, SemInfo *seminfo, int sep) { + int line = ls->linenumber; /* initial line (for error message) */ + save_and_next(ls); /* skip 2nd '[' */ + if (currIsNewline(ls)) /* string starts with a newline? */ + inclinenumber(ls); /* skip it */ + for (;;) { + switch (ls->current) { + case EOZ: { /* error */ + const char *what = (seminfo ? "string" : "comment"); + const char *msg = luaO_pushfstring(ls->L, + "unfinished long %s (starting at line %d)", what, line); + lexerror(ls, msg, TK_EOS); + break; /* to avoid warnings */ + } + case ']': { + if (skip_sep(ls) == sep) { + save_and_next(ls); /* skip 2nd ']' */ + goto endloop; + } + break; + } + case '\n': case '\r': { + save(ls, '\n'); + inclinenumber(ls); + if (!seminfo) luaZ_resetbuffer(ls->buff); /* avoid wasting space */ + break; + } + default: { + if (seminfo) save_and_next(ls); + else next(ls); + } + } + } endloop: + if (seminfo) + seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + (2 + sep), + luaZ_bufflen(ls->buff) - 2*(2 + sep)); +} + + +static void esccheck (LexState *ls, int c, const char *msg) { + if (!c) { + if (ls->current != EOZ) + save_and_next(ls); /* add current to buffer for error message */ + lexerror(ls, msg, TK_STRING); + } +} + + +static int gethexa (LexState *ls) { + save_and_next(ls); + esccheck (ls, lisxdigit(ls->current), "hexadecimal digit expected"); + return luaO_hexavalue(ls->current); +} + + +static int readhexaesc (LexState *ls) { + int r = gethexa(ls); + r = (r << 4) + gethexa(ls); + luaZ_buffremove(ls->buff, 2); /* remove saved chars from buffer */ + return r; +} + + +static unsigned long readutf8esc (LexState *ls) { + unsigned long r; + int i = 4; /* chars to be removed: '\', 'u', '{', and first digit */ + save_and_next(ls); /* skip 'u' */ + esccheck(ls, ls->current == '{', "missing '{'"); + r = gethexa(ls); /* must have at least one digit */ + while ((save_and_next(ls), lisxdigit(ls->current))) { + i++; + r = (r << 4) + luaO_hexavalue(ls->current); + esccheck(ls, r <= 0x10FFFF, "UTF-8 value too large"); + } + esccheck(ls, ls->current == '}', "missing '}'"); + next(ls); /* skip '}' */ + luaZ_buffremove(ls->buff, i); /* remove saved chars from buffer */ + return r; +} + + +static void utf8esc (LexState *ls) { + char buff[UTF8BUFFSZ]; + int n = luaO_utf8esc(buff, readutf8esc(ls)); + for (; n > 0; n--) /* add 'buff' to string */ + save(ls, buff[UTF8BUFFSZ - n]); +} + + +static int readdecesc (LexState *ls) { + int i; + int r = 0; /* result accumulator */ + for (i = 0; i < 3 && lisdigit(ls->current); i++) { /* read up to 3 digits */ + r = 10*r + ls->current - '0'; + save_and_next(ls); + } + esccheck(ls, r <= UCHAR_MAX, "decimal escape too large"); + luaZ_buffremove(ls->buff, i); /* remove read digits from buffer */ + return r; +} + + +static void read_string (LexState *ls, int del, SemInfo *seminfo) { + save_and_next(ls); /* keep delimiter (for error messages) */ + while (ls->current != del) { + switch (ls->current) { + case EOZ: + lexerror(ls, "unfinished string", TK_EOS); + break; /* to avoid warnings */ + case '\n': + case '\r': + lexerror(ls, "unfinished string", TK_STRING); + break; /* to avoid warnings */ + case '\\': { /* escape sequences */ + int c; /* final character to be saved */ + save_and_next(ls); /* keep '\\' for error messages */ + switch (ls->current) { + case 'a': c = '\a'; goto read_save; + case 'b': c = '\b'; goto read_save; + case 'f': c = '\f'; goto read_save; + case 'n': c = '\n'; goto read_save; + case 'r': c = '\r'; goto read_save; + case 't': c = '\t'; goto read_save; + case 'v': c = '\v'; goto read_save; + case 'x': c = readhexaesc(ls); goto read_save; + case 'u': utf8esc(ls); goto no_save; + case '\n': case '\r': + inclinenumber(ls); c = '\n'; goto only_save; + case '\\': case '\"': case '\'': + c = ls->current; goto read_save; + case EOZ: goto no_save; /* will raise an error next loop */ + case 'z': { /* zap following span of spaces */ + luaZ_buffremove(ls->buff, 1); /* remove '\\' */ + next(ls); /* skip the 'z' */ + while (lisspace(ls->current)) { + if (currIsNewline(ls)) inclinenumber(ls); + else next(ls); + } + goto no_save; + } + default: { + esccheck(ls, lisdigit(ls->current), "invalid escape sequence"); + c = readdecesc(ls); /* digital escape '\ddd' */ + goto only_save; + } + } + read_save: + next(ls); + /* go through */ + only_save: + luaZ_buffremove(ls->buff, 1); /* remove '\\' */ + save(ls, c); + /* go through */ + no_save: break; + } + default: + save_and_next(ls); + } + } + save_and_next(ls); /* skip delimiter */ + seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + 1, + luaZ_bufflen(ls->buff) - 2); +} + + +static int llex (LexState *ls, SemInfo *seminfo) { + luaZ_resetbuffer(ls->buff); + for (;;) { + switch (ls->current) { + case '\n': case '\r': { /* line breaks */ + inclinenumber(ls); + break; + } + case ' ': case '\f': case '\t': case '\v': { /* spaces */ + next(ls); + break; + } + case '-': { /* '-' or '--' (comment) */ + next(ls); + if (ls->current != '-') return '-'; + /* else is a comment */ + next(ls); + if (ls->current == '[') { /* long comment? */ + int sep = skip_sep(ls); + luaZ_resetbuffer(ls->buff); /* 'skip_sep' may dirty the buffer */ + if (sep >= 0) { + read_long_string(ls, NULL, sep); /* skip long comment */ + luaZ_resetbuffer(ls->buff); /* previous call may dirty the buff. */ + break; + } + } + /* else short comment */ + while (!currIsNewline(ls) && ls->current != EOZ) + next(ls); /* skip until end of line (or end of file) */ + break; + } + case '[': { /* long string or simply '[' */ + int sep = skip_sep(ls); + if (sep >= 0) { + read_long_string(ls, seminfo, sep); + return TK_STRING; + } + else if (sep != -1) /* '[=...' missing second bracket */ + lexerror(ls, "invalid long string delimiter", TK_STRING); + return '['; + } + case '=': { + next(ls); + if (check_next1(ls, '=')) return TK_EQ; + else return '='; + } + case '<': { + next(ls); + if (check_next1(ls, '=')) return TK_LE; + else if (check_next1(ls, '<')) return TK_SHL; + else return '<'; + } + case '>': { + next(ls); + if (check_next1(ls, '=')) return TK_GE; + else if (check_next1(ls, '>')) return TK_SHR; + else return '>'; + } + case '/': { + next(ls); + if (check_next1(ls, '/')) return TK_IDIV; + else return '/'; + } + case '~': { + next(ls); + if (check_next1(ls, '=')) return TK_NE; + else return '~'; + } + case ':': { + next(ls); + if (check_next1(ls, ':')) return TK_DBCOLON; + else return ':'; + } + case '"': case '\'': { /* short literal strings */ + read_string(ls, ls->current, seminfo); + return TK_STRING; + } + case '.': { /* '.', '..', '...', or number */ + save_and_next(ls); + if (check_next1(ls, '.')) { + if (check_next1(ls, '.')) + return TK_DOTS; /* '...' */ + else return TK_CONCAT; /* '..' */ + } + else if (!lisdigit(ls->current)) return '.'; + else return read_numeral(ls, seminfo); + } + case '0': case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': { + return read_numeral(ls, seminfo); + } + case EOZ: { + return TK_EOS; + } + default: { + if (lislalpha(ls->current)) { /* identifier or reserved word? */ + TString *ts; + do { + save_and_next(ls); + } while (lislalnum(ls->current)); + ts = luaX_newstring(ls, luaZ_buffer(ls->buff), + luaZ_bufflen(ls->buff)); + seminfo->ts = ts; + if (isreserved(ts)) /* reserved word? */ + return ts->extra - 1 + FIRST_RESERVED; + else { + return TK_NAME; + } + } + else { /* single-char tokens (+ - / ...) */ + int c = ls->current; + next(ls); + return c; + } + } + } + } +} + + +void luaX_next (LexState *ls) { + ls->lastline = ls->linenumber; + if (ls->lookahead.token != TK_EOS) { /* is there a look-ahead token? */ + ls->t = ls->lookahead; /* use this one */ + ls->lookahead.token = TK_EOS; /* and discharge it */ + } + else + ls->t.token = llex(ls, &ls->t.seminfo); /* read next token */ +} + + +int luaX_lookahead (LexState *ls) { + lua_assert(ls->lookahead.token == TK_EOS); + ls->lookahead.token = llex(ls, &ls->lookahead.seminfo); + return ls->lookahead.token; +} + diff --git a/deps/rcheevos/test/lua/src/llex.h b/deps/rcheevos/test/lua/src/llex.h new file mode 100644 index 0000000000..2363d87e40 --- /dev/null +++ b/deps/rcheevos/test/lua/src/llex.h @@ -0,0 +1,85 @@ +/* +** $Id: llex.h,v 1.79 2016/05/02 14:02:12 roberto Exp $ +** Lexical Analyzer +** See Copyright Notice in lua.h +*/ + +#ifndef llex_h +#define llex_h + +#include "lobject.h" +#include "lzio.h" + + +#define FIRST_RESERVED 257 + + +#if !defined(LUA_ENV) +#define LUA_ENV "_ENV" +#endif + + +/* +* WARNING: if you change the order of this enumeration, +* grep "ORDER RESERVED" +*/ +enum RESERVED { + /* terminal symbols denoted by reserved words */ + TK_AND = FIRST_RESERVED, TK_BREAK, + TK_DO, TK_ELSE, TK_ELSEIF, TK_END, TK_FALSE, TK_FOR, TK_FUNCTION, + TK_GOTO, TK_IF, TK_IN, TK_LOCAL, TK_NIL, TK_NOT, TK_OR, TK_REPEAT, + TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE, + /* other terminal symbols */ + TK_IDIV, TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE, + TK_SHL, TK_SHR, + TK_DBCOLON, TK_EOS, + TK_FLT, TK_INT, TK_NAME, TK_STRING +}; + +/* number of reserved words */ +#define NUM_RESERVED (cast(int, TK_WHILE-FIRST_RESERVED+1)) + + +typedef union { + lua_Number r; + lua_Integer i; + TString *ts; +} SemInfo; /* semantics information */ + + +typedef struct Token { + int token; + SemInfo seminfo; +} Token; + + +/* state of the lexer plus state of the parser when shared by all + functions */ +typedef struct LexState { + int current; /* current character (charint) */ + int linenumber; /* input line counter */ + int lastline; /* line of last token 'consumed' */ + Token t; /* current token */ + Token lookahead; /* look ahead token */ + struct FuncState *fs; /* current function (parser) */ + struct lua_State *L; + ZIO *z; /* input stream */ + Mbuffer *buff; /* buffer for tokens */ + Table *h; /* to avoid collection/reuse strings */ + struct Dyndata *dyd; /* dynamic structures used by the parser */ + TString *source; /* current source name */ + TString *envn; /* environment variable name */ +} LexState; + + +LUAI_FUNC void luaX_init (lua_State *L); +LUAI_FUNC void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, + TString *source, int firstchar); +LUAI_FUNC TString *luaX_newstring (LexState *ls, const char *str, size_t l); +LUAI_FUNC void luaX_next (LexState *ls); +LUAI_FUNC int luaX_lookahead (LexState *ls); +LUAI_FUNC l_noret luaX_syntaxerror (LexState *ls, const char *s); +LUAI_FUNC const char *luaX_token2str (LexState *ls, int token); + + +#endif diff --git a/deps/rcheevos/test/lua/src/llimits.h b/deps/rcheevos/test/lua/src/llimits.h new file mode 100644 index 0000000000..f21377fef9 --- /dev/null +++ b/deps/rcheevos/test/lua/src/llimits.h @@ -0,0 +1,323 @@ +/* +** $Id: llimits.h,v 1.141 2015/11/19 19:16:22 roberto Exp $ +** Limits, basic types, and some other 'installation-dependent' definitions +** See Copyright Notice in lua.h +*/ + +#ifndef llimits_h +#define llimits_h + + +#include +#include + + +#include "lua.h" + +/* +** 'lu_mem' and 'l_mem' are unsigned/signed integers big enough to count +** the total memory used by Lua (in bytes). Usually, 'size_t' and +** 'ptrdiff_t' should work, but we use 'long' for 16-bit machines. +*/ +#if defined(LUAI_MEM) /* { external definitions? */ +typedef LUAI_UMEM lu_mem; +typedef LUAI_MEM l_mem; +#elif LUAI_BITSINT >= 32 /* }{ */ +typedef size_t lu_mem; +typedef ptrdiff_t l_mem; +#else /* 16-bit ints */ /* }{ */ +typedef unsigned long lu_mem; +typedef long l_mem; +#endif /* } */ + + +/* chars used as small naturals (so that 'char' is reserved for characters) */ +typedef unsigned char lu_byte; + + +/* maximum value for size_t */ +#define MAX_SIZET ((size_t)(~(size_t)0)) + +/* maximum size visible for Lua (must be representable in a lua_Integer */ +#define MAX_SIZE (sizeof(size_t) < sizeof(lua_Integer) ? MAX_SIZET \ + : (size_t)(LUA_MAXINTEGER)) + + +#define MAX_LUMEM ((lu_mem)(~(lu_mem)0)) + +#define MAX_LMEM ((l_mem)(MAX_LUMEM >> 1)) + + +#define MAX_INT INT_MAX /* maximum value of an int */ + + +/* +** conversion of pointer to unsigned integer: +** this is for hashing only; there is no problem if the integer +** cannot hold the whole pointer value +*/ +#define point2uint(p) ((unsigned int)((size_t)(p) & UINT_MAX)) + + + +/* type to ensure maximum alignment */ +#if defined(LUAI_USER_ALIGNMENT_T) +typedef LUAI_USER_ALIGNMENT_T L_Umaxalign; +#else +typedef union { + lua_Number n; + double u; + void *s; + lua_Integer i; + long l; +} L_Umaxalign; +#endif + + + +/* types of 'usual argument conversions' for lua_Number and lua_Integer */ +typedef LUAI_UACNUMBER l_uacNumber; +typedef LUAI_UACINT l_uacInt; + + +/* internal assertions for in-house debugging */ +#if defined(lua_assert) +#define check_exp(c,e) (lua_assert(c), (e)) +/* to avoid problems with conditions too long */ +#define lua_longassert(c) ((c) ? (void)0 : lua_assert(0)) +#else +#define lua_assert(c) ((void)0) +#define check_exp(c,e) (e) +#define lua_longassert(c) ((void)0) +#endif + +/* +** assertion for checking API calls +*/ +#if !defined(luai_apicheck) +#define luai_apicheck(l,e) lua_assert(e) +#endif + +#define api_check(l,e,msg) luai_apicheck(l,(e) && msg) + + +/* macro to avoid warnings about unused variables */ +#if !defined(UNUSED) +#define UNUSED(x) ((void)(x)) +#endif + + +/* type casts (a macro highlights casts in the code) */ +#define cast(t, exp) ((t)(exp)) + +#define cast_void(i) cast(void, (i)) +#define cast_byte(i) cast(lu_byte, (i)) +#define cast_num(i) cast(lua_Number, (i)) +#define cast_int(i) cast(int, (i)) +#define cast_uchar(i) cast(unsigned char, (i)) + + +/* cast a signed lua_Integer to lua_Unsigned */ +#if !defined(l_castS2U) +#define l_castS2U(i) ((lua_Unsigned)(i)) +#endif + +/* +** cast a lua_Unsigned to a signed lua_Integer; this cast is +** not strict ISO C, but two-complement architectures should +** work fine. +*/ +#if !defined(l_castU2S) +#define l_castU2S(i) ((lua_Integer)(i)) +#endif + + +/* +** non-return type +*/ +#if defined(__GNUC__) +#define l_noret void __attribute__((noreturn)) +#elif defined(_MSC_VER) && _MSC_VER >= 1200 +#define l_noret void __declspec(noreturn) +#else +#define l_noret void +#endif + + + +/* +** maximum depth for nested C calls and syntactical nested non-terminals +** in a program. (Value must fit in an unsigned short int.) +*/ +#if !defined(LUAI_MAXCCALLS) +#define LUAI_MAXCCALLS 200 +#endif + + + +/* +** type for virtual-machine instructions; +** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h) +*/ +#if LUAI_BITSINT >= 32 +typedef unsigned int Instruction; +#else +typedef unsigned long Instruction; +#endif + + + +/* +** Maximum length for short strings, that is, strings that are +** internalized. (Cannot be smaller than reserved words or tags for +** metamethods, as these strings must be internalized; +** #("function") = 8, #("__newindex") = 10.) +*/ +#if !defined(LUAI_MAXSHORTLEN) +#define LUAI_MAXSHORTLEN 40 +#endif + + +/* +** Initial size for the string table (must be power of 2). +** The Lua core alone registers ~50 strings (reserved words + +** metaevent keys + a few others). Libraries would typically add +** a few dozens more. +*/ +#if !defined(MINSTRTABSIZE) +#define MINSTRTABSIZE 128 +#endif + + +/* +** Size of cache for strings in the API. 'N' is the number of +** sets (better be a prime) and "M" is the size of each set (M == 1 +** makes a direct cache.) +*/ +#if !defined(STRCACHE_N) +#define STRCACHE_N 53 +#define STRCACHE_M 2 +#endif + + +/* minimum size for string buffer */ +#if !defined(LUA_MINBUFFER) +#define LUA_MINBUFFER 32 +#endif + + +/* +** macros that are executed whenever program enters the Lua core +** ('lua_lock') and leaves the core ('lua_unlock') +*/ +#if !defined(lua_lock) +#define lua_lock(L) ((void) 0) +#define lua_unlock(L) ((void) 0) +#endif + +/* +** macro executed during Lua functions at points where the +** function can yield. +*/ +#if !defined(luai_threadyield) +#define luai_threadyield(L) {lua_unlock(L); lua_lock(L);} +#endif + + +/* +** these macros allow user-specific actions on threads when you defined +** LUAI_EXTRASPACE and need to do something extra when a thread is +** created/deleted/resumed/yielded. +*/ +#if !defined(luai_userstateopen) +#define luai_userstateopen(L) ((void)L) +#endif + +#if !defined(luai_userstateclose) +#define luai_userstateclose(L) ((void)L) +#endif + +#if !defined(luai_userstatethread) +#define luai_userstatethread(L,L1) ((void)L) +#endif + +#if !defined(luai_userstatefree) +#define luai_userstatefree(L,L1) ((void)L) +#endif + +#if !defined(luai_userstateresume) +#define luai_userstateresume(L,n) ((void)L) +#endif + +#if !defined(luai_userstateyield) +#define luai_userstateyield(L,n) ((void)L) +#endif + + + +/* +** The luai_num* macros define the primitive operations over numbers. +*/ + +/* floor division (defined as 'floor(a/b)') */ +#if !defined(luai_numidiv) +#define luai_numidiv(L,a,b) ((void)L, l_floor(luai_numdiv(L,a,b))) +#endif + +/* float division */ +#if !defined(luai_numdiv) +#define luai_numdiv(L,a,b) ((a)/(b)) +#endif + +/* +** modulo: defined as 'a - floor(a/b)*b'; this definition gives NaN when +** 'b' is huge, but the result should be 'a'. 'fmod' gives the result of +** 'a - trunc(a/b)*b', and therefore must be corrected when 'trunc(a/b) +** ~= floor(a/b)'. That happens when the division has a non-integer +** negative result, which is equivalent to the test below. +*/ +#if !defined(luai_nummod) +#define luai_nummod(L,a,b,m) \ + { (m) = l_mathop(fmod)(a,b); if ((m)*(b) < 0) (m) += (b); } +#endif + +/* exponentiation */ +#if !defined(luai_numpow) +#define luai_numpow(L,a,b) ((void)L, l_mathop(pow)(a,b)) +#endif + +/* the others are quite standard operations */ +#if !defined(luai_numadd) +#define luai_numadd(L,a,b) ((a)+(b)) +#define luai_numsub(L,a,b) ((a)-(b)) +#define luai_nummul(L,a,b) ((a)*(b)) +#define luai_numunm(L,a) (-(a)) +#define luai_numeq(a,b) ((a)==(b)) +#define luai_numlt(a,b) ((a)<(b)) +#define luai_numle(a,b) ((a)<=(b)) +#define luai_numisnan(a) (!luai_numeq((a), (a))) +#endif + + + + + +/* +** macro to control inclusion of some hard tests on stack reallocation +*/ +#if !defined(HARDSTACKTESTS) +#define condmovestack(L,pre,pos) ((void)0) +#else +/* realloc stack keeping its size */ +#define condmovestack(L,pre,pos) \ + { int sz_ = (L)->stacksize; pre; luaD_reallocstack((L), sz_); pos; } +#endif + +#if !defined(HARDMEMTESTS) +#define condchangemem(L,pre,pos) ((void)0) +#else +#define condchangemem(L,pre,pos) \ + { if (G(L)->gcrunning) { pre; luaC_fullgc(L, 0); pos; } } +#endif + +#endif diff --git a/deps/rcheevos/test/lua/src/lmathlib.c b/deps/rcheevos/test/lua/src/lmathlib.c new file mode 100644 index 0000000000..b7f8baee07 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lmathlib.c @@ -0,0 +1,410 @@ +/* +** $Id: lmathlib.c,v 1.119 2016/12/22 13:08:50 roberto Exp $ +** Standard mathematical library +** See Copyright Notice in lua.h +*/ + +#define lmathlib_c +#define LUA_LIB + +#include "lprefix.h" + + +#include +#include + +#include "lua.h" + +#include "lauxlib.h" +#include "lualib.h" + + +#undef PI +#define PI (l_mathop(3.141592653589793238462643383279502884)) + + +#if !defined(l_rand) /* { */ +#if defined(LUA_USE_POSIX) +#define l_rand() random() +#define l_srand(x) srandom(x) +#define L_RANDMAX 2147483647 /* (2^31 - 1), following POSIX */ +#else +#define l_rand() rand() +#define l_srand(x) srand(x) +#define L_RANDMAX RAND_MAX +#endif +#endif /* } */ + + +static int math_abs (lua_State *L) { + if (lua_isinteger(L, 1)) { + lua_Integer n = lua_tointeger(L, 1); + if (n < 0) n = (lua_Integer)(0u - (lua_Unsigned)n); + lua_pushinteger(L, n); + } + else + lua_pushnumber(L, l_mathop(fabs)(luaL_checknumber(L, 1))); + return 1; +} + +static int math_sin (lua_State *L) { + lua_pushnumber(L, l_mathop(sin)(luaL_checknumber(L, 1))); + return 1; +} + +static int math_cos (lua_State *L) { + lua_pushnumber(L, l_mathop(cos)(luaL_checknumber(L, 1))); + return 1; +} + +static int math_tan (lua_State *L) { + lua_pushnumber(L, l_mathop(tan)(luaL_checknumber(L, 1))); + return 1; +} + +static int math_asin (lua_State *L) { + lua_pushnumber(L, l_mathop(asin)(luaL_checknumber(L, 1))); + return 1; +} + +static int math_acos (lua_State *L) { + lua_pushnumber(L, l_mathop(acos)(luaL_checknumber(L, 1))); + return 1; +} + +static int math_atan (lua_State *L) { + lua_Number y = luaL_checknumber(L, 1); + lua_Number x = luaL_optnumber(L, 2, 1); + lua_pushnumber(L, l_mathop(atan2)(y, x)); + return 1; +} + + +static int math_toint (lua_State *L) { + int valid; + lua_Integer n = lua_tointegerx(L, 1, &valid); + if (valid) + lua_pushinteger(L, n); + else { + luaL_checkany(L, 1); + lua_pushnil(L); /* value is not convertible to integer */ + } + return 1; +} + + +static void pushnumint (lua_State *L, lua_Number d) { + lua_Integer n; + if (lua_numbertointeger(d, &n)) /* does 'd' fit in an integer? */ + lua_pushinteger(L, n); /* result is integer */ + else + lua_pushnumber(L, d); /* result is float */ +} + + +static int math_floor (lua_State *L) { + if (lua_isinteger(L, 1)) + lua_settop(L, 1); /* integer is its own floor */ + else { + lua_Number d = l_mathop(floor)(luaL_checknumber(L, 1)); + pushnumint(L, d); + } + return 1; +} + + +static int math_ceil (lua_State *L) { + if (lua_isinteger(L, 1)) + lua_settop(L, 1); /* integer is its own ceil */ + else { + lua_Number d = l_mathop(ceil)(luaL_checknumber(L, 1)); + pushnumint(L, d); + } + return 1; +} + + +static int math_fmod (lua_State *L) { + if (lua_isinteger(L, 1) && lua_isinteger(L, 2)) { + lua_Integer d = lua_tointeger(L, 2); + if ((lua_Unsigned)d + 1u <= 1u) { /* special cases: -1 or 0 */ + luaL_argcheck(L, d != 0, 2, "zero"); + lua_pushinteger(L, 0); /* avoid overflow with 0x80000... / -1 */ + } + else + lua_pushinteger(L, lua_tointeger(L, 1) % d); + } + else + lua_pushnumber(L, l_mathop(fmod)(luaL_checknumber(L, 1), + luaL_checknumber(L, 2))); + return 1; +} + + +/* +** next function does not use 'modf', avoiding problems with 'double*' +** (which is not compatible with 'float*') when lua_Number is not +** 'double'. +*/ +static int math_modf (lua_State *L) { + if (lua_isinteger(L ,1)) { + lua_settop(L, 1); /* number is its own integer part */ + lua_pushnumber(L, 0); /* no fractional part */ + } + else { + lua_Number n = luaL_checknumber(L, 1); + /* integer part (rounds toward zero) */ + lua_Number ip = (n < 0) ? l_mathop(ceil)(n) : l_mathop(floor)(n); + pushnumint(L, ip); + /* fractional part (test needed for inf/-inf) */ + lua_pushnumber(L, (n == ip) ? l_mathop(0.0) : (n - ip)); + } + return 2; +} + + +static int math_sqrt (lua_State *L) { + lua_pushnumber(L, l_mathop(sqrt)(luaL_checknumber(L, 1))); + return 1; +} + + +static int math_ult (lua_State *L) { + lua_Integer a = luaL_checkinteger(L, 1); + lua_Integer b = luaL_checkinteger(L, 2); + lua_pushboolean(L, (lua_Unsigned)a < (lua_Unsigned)b); + return 1; +} + +static int math_log (lua_State *L) { + lua_Number x = luaL_checknumber(L, 1); + lua_Number res; + if (lua_isnoneornil(L, 2)) + res = l_mathop(log)(x); + else { + lua_Number base = luaL_checknumber(L, 2); +#if !defined(LUA_USE_C89) + if (base == l_mathop(2.0)) + res = l_mathop(log2)(x); else +#endif + if (base == l_mathop(10.0)) + res = l_mathop(log10)(x); + else + res = l_mathop(log)(x)/l_mathop(log)(base); + } + lua_pushnumber(L, res); + return 1; +} + +static int math_exp (lua_State *L) { + lua_pushnumber(L, l_mathop(exp)(luaL_checknumber(L, 1))); + return 1; +} + +static int math_deg (lua_State *L) { + lua_pushnumber(L, luaL_checknumber(L, 1) * (l_mathop(180.0) / PI)); + return 1; +} + +static int math_rad (lua_State *L) { + lua_pushnumber(L, luaL_checknumber(L, 1) * (PI / l_mathop(180.0))); + return 1; +} + + +static int math_min (lua_State *L) { + int n = lua_gettop(L); /* number of arguments */ + int imin = 1; /* index of current minimum value */ + int i; + luaL_argcheck(L, n >= 1, 1, "value expected"); + for (i = 2; i <= n; i++) { + if (lua_compare(L, i, imin, LUA_OPLT)) + imin = i; + } + lua_pushvalue(L, imin); + return 1; +} + + +static int math_max (lua_State *L) { + int n = lua_gettop(L); /* number of arguments */ + int imax = 1; /* index of current maximum value */ + int i; + luaL_argcheck(L, n >= 1, 1, "value expected"); + for (i = 2; i <= n; i++) { + if (lua_compare(L, imax, i, LUA_OPLT)) + imax = i; + } + lua_pushvalue(L, imax); + return 1; +} + +/* +** This function uses 'double' (instead of 'lua_Number') to ensure that +** all bits from 'l_rand' can be represented, and that 'RANDMAX + 1.0' +** will keep full precision (ensuring that 'r' is always less than 1.0.) +*/ +static int math_random (lua_State *L) { + lua_Integer low, up; + double r = (double)l_rand() * (1.0 / ((double)L_RANDMAX + 1.0)); + switch (lua_gettop(L)) { /* check number of arguments */ + case 0: { /* no arguments */ + lua_pushnumber(L, (lua_Number)r); /* Number between 0 and 1 */ + return 1; + } + case 1: { /* only upper limit */ + low = 1; + up = luaL_checkinteger(L, 1); + break; + } + case 2: { /* lower and upper limits */ + low = luaL_checkinteger(L, 1); + up = luaL_checkinteger(L, 2); + break; + } + default: return luaL_error(L, "wrong number of arguments"); + } + /* random integer in the interval [low, up] */ + luaL_argcheck(L, low <= up, 1, "interval is empty"); + luaL_argcheck(L, low >= 0 || up <= LUA_MAXINTEGER + low, 1, + "interval too large"); + r *= (double)(up - low) + 1.0; + lua_pushinteger(L, (lua_Integer)r + low); + return 1; +} + + +static int math_randomseed (lua_State *L) { + l_srand((unsigned int)(lua_Integer)luaL_checknumber(L, 1)); + (void)l_rand(); /* discard first value to avoid undesirable correlations */ + return 0; +} + + +static int math_type (lua_State *L) { + if (lua_type(L, 1) == LUA_TNUMBER) { + if (lua_isinteger(L, 1)) + lua_pushliteral(L, "integer"); + else + lua_pushliteral(L, "float"); + } + else { + luaL_checkany(L, 1); + lua_pushnil(L); + } + return 1; +} + + +/* +** {================================================================== +** Deprecated functions (for compatibility only) +** =================================================================== +*/ +#if defined(LUA_COMPAT_MATHLIB) + +static int math_cosh (lua_State *L) { + lua_pushnumber(L, l_mathop(cosh)(luaL_checknumber(L, 1))); + return 1; +} + +static int math_sinh (lua_State *L) { + lua_pushnumber(L, l_mathop(sinh)(luaL_checknumber(L, 1))); + return 1; +} + +static int math_tanh (lua_State *L) { + lua_pushnumber(L, l_mathop(tanh)(luaL_checknumber(L, 1))); + return 1; +} + +static int math_pow (lua_State *L) { + lua_Number x = luaL_checknumber(L, 1); + lua_Number y = luaL_checknumber(L, 2); + lua_pushnumber(L, l_mathop(pow)(x, y)); + return 1; +} + +static int math_frexp (lua_State *L) { + int e; + lua_pushnumber(L, l_mathop(frexp)(luaL_checknumber(L, 1), &e)); + lua_pushinteger(L, e); + return 2; +} + +static int math_ldexp (lua_State *L) { + lua_Number x = luaL_checknumber(L, 1); + int ep = (int)luaL_checkinteger(L, 2); + lua_pushnumber(L, l_mathop(ldexp)(x, ep)); + return 1; +} + +static int math_log10 (lua_State *L) { + lua_pushnumber(L, l_mathop(log10)(luaL_checknumber(L, 1))); + return 1; +} + +#endif +/* }================================================================== */ + + + +static const luaL_Reg mathlib[] = { + {"abs", math_abs}, + {"acos", math_acos}, + {"asin", math_asin}, + {"atan", math_atan}, + {"ceil", math_ceil}, + {"cos", math_cos}, + {"deg", math_deg}, + {"exp", math_exp}, + {"tointeger", math_toint}, + {"floor", math_floor}, + {"fmod", math_fmod}, + {"ult", math_ult}, + {"log", math_log}, + {"max", math_max}, + {"min", math_min}, + {"modf", math_modf}, + {"rad", math_rad}, + {"random", math_random}, + {"randomseed", math_randomseed}, + {"sin", math_sin}, + {"sqrt", math_sqrt}, + {"tan", math_tan}, + {"type", math_type}, +#if defined(LUA_COMPAT_MATHLIB) + {"atan2", math_atan}, + {"cosh", math_cosh}, + {"sinh", math_sinh}, + {"tanh", math_tanh}, + {"pow", math_pow}, + {"frexp", math_frexp}, + {"ldexp", math_ldexp}, + {"log10", math_log10}, +#endif + /* placeholders */ + {"pi", NULL}, + {"huge", NULL}, + {"maxinteger", NULL}, + {"mininteger", NULL}, + {NULL, NULL} +}; + + +/* +** Open math library +*/ +LUAMOD_API int luaopen_math (lua_State *L) { + luaL_newlib(L, mathlib); + lua_pushnumber(L, PI); + lua_setfield(L, -2, "pi"); + lua_pushnumber(L, (lua_Number)HUGE_VAL); + lua_setfield(L, -2, "huge"); + lua_pushinteger(L, LUA_MAXINTEGER); + lua_setfield(L, -2, "maxinteger"); + lua_pushinteger(L, LUA_MININTEGER); + lua_setfield(L, -2, "mininteger"); + return 1; +} + diff --git a/deps/rcheevos/test/lua/src/lmem.c b/deps/rcheevos/test/lua/src/lmem.c new file mode 100644 index 0000000000..0a0476cc77 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lmem.c @@ -0,0 +1,100 @@ +/* +** $Id: lmem.c,v 1.91 2015/03/06 19:45:54 roberto Exp $ +** Interface to Memory Manager +** See Copyright Notice in lua.h +*/ + +#define lmem_c +#define LUA_CORE + +#include "lprefix.h" + + +#include + +#include "lua.h" + +#include "ldebug.h" +#include "ldo.h" +#include "lgc.h" +#include "lmem.h" +#include "lobject.h" +#include "lstate.h" + + + +/* +** About the realloc function: +** void * frealloc (void *ud, void *ptr, size_t osize, size_t nsize); +** ('osize' is the old size, 'nsize' is the new size) +** +** * frealloc(ud, NULL, x, s) creates a new block of size 's' (no +** matter 'x'). +** +** * frealloc(ud, p, x, 0) frees the block 'p' +** (in this specific case, frealloc must return NULL); +** particularly, frealloc(ud, NULL, 0, 0) does nothing +** (which is equivalent to free(NULL) in ISO C) +** +** frealloc returns NULL if it cannot create or reallocate the area +** (any reallocation to an equal or smaller size cannot fail!) +*/ + + + +#define MINSIZEARRAY 4 + + +void *luaM_growaux_ (lua_State *L, void *block, int *size, size_t size_elems, + int limit, const char *what) { + void *newblock; + int newsize; + if (*size >= limit/2) { /* cannot double it? */ + if (*size >= limit) /* cannot grow even a little? */ + luaG_runerror(L, "too many %s (limit is %d)", what, limit); + newsize = limit; /* still have at least one free place */ + } + else { + newsize = (*size)*2; + if (newsize < MINSIZEARRAY) + newsize = MINSIZEARRAY; /* minimum size */ + } + newblock = luaM_reallocv(L, block, *size, newsize, size_elems); + *size = newsize; /* update only when everything else is OK */ + return newblock; +} + + +l_noret luaM_toobig (lua_State *L) { + luaG_runerror(L, "memory allocation error: block too big"); +} + + + +/* +** generic allocation routine. +*/ +void *luaM_realloc_ (lua_State *L, void *block, size_t osize, size_t nsize) { + void *newblock; + global_State *g = G(L); + size_t realosize = (block) ? osize : 0; + lua_assert((realosize == 0) == (block == NULL)); +#if defined(HARDMEMTESTS) + if (nsize > realosize && g->gcrunning) + luaC_fullgc(L, 1); /* force a GC whenever possible */ +#endif + newblock = (*g->frealloc)(g->ud, block, osize, nsize); + if (newblock == NULL && nsize > 0) { + lua_assert(nsize > realosize); /* cannot fail when shrinking a block */ + if (g->version) { /* is state fully built? */ + luaC_fullgc(L, 1); /* try to free some memory... */ + newblock = (*g->frealloc)(g->ud, block, osize, nsize); /* try again */ + } + if (newblock == NULL) + luaD_throw(L, LUA_ERRMEM); + } + lua_assert((nsize == 0) == (newblock == NULL)); + g->GCdebt = (g->GCdebt + nsize) - realosize; + return newblock; +} + diff --git a/deps/rcheevos/test/lua/src/lmem.h b/deps/rcheevos/test/lua/src/lmem.h new file mode 100644 index 0000000000..30f484895e --- /dev/null +++ b/deps/rcheevos/test/lua/src/lmem.h @@ -0,0 +1,69 @@ +/* +** $Id: lmem.h,v 1.43 2014/12/19 17:26:14 roberto Exp $ +** Interface to Memory Manager +** See Copyright Notice in lua.h +*/ + +#ifndef lmem_h +#define lmem_h + + +#include + +#include "llimits.h" +#include "lua.h" + + +/* +** This macro reallocs a vector 'b' from 'on' to 'n' elements, where +** each element has size 'e'. In case of arithmetic overflow of the +** product 'n'*'e', it raises an error (calling 'luaM_toobig'). Because +** 'e' is always constant, it avoids the runtime division MAX_SIZET/(e). +** +** (The macro is somewhat complex to avoid warnings: The 'sizeof' +** comparison avoids a runtime comparison when overflow cannot occur. +** The compiler should be able to optimize the real test by itself, but +** when it does it, it may give a warning about "comparison is always +** false due to limited range of data type"; the +1 tricks the compiler, +** avoiding this warning but also this optimization.) +*/ +#define luaM_reallocv(L,b,on,n,e) \ + (((sizeof(n) >= sizeof(size_t) && cast(size_t, (n)) + 1 > MAX_SIZET/(e)) \ + ? luaM_toobig(L) : cast_void(0)) , \ + luaM_realloc_(L, (b), (on)*(e), (n)*(e))) + +/* +** Arrays of chars do not need any test +*/ +#define luaM_reallocvchar(L,b,on,n) \ + cast(char *, luaM_realloc_(L, (b), (on)*sizeof(char), (n)*sizeof(char))) + +#define luaM_freemem(L, b, s) luaM_realloc_(L, (b), (s), 0) +#define luaM_free(L, b) luaM_realloc_(L, (b), sizeof(*(b)), 0) +#define luaM_freearray(L, b, n) luaM_realloc_(L, (b), (n)*sizeof(*(b)), 0) + +#define luaM_malloc(L,s) luaM_realloc_(L, NULL, 0, (s)) +#define luaM_new(L,t) cast(t *, luaM_malloc(L, sizeof(t))) +#define luaM_newvector(L,n,t) \ + cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t))) + +#define luaM_newobject(L,tag,s) luaM_realloc_(L, NULL, tag, (s)) + +#define luaM_growvector(L,v,nelems,size,t,limit,e) \ + if ((nelems)+1 > (size)) \ + ((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e))) + +#define luaM_reallocvector(L, v,oldn,n,t) \ + ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t)))) + +LUAI_FUNC l_noret luaM_toobig (lua_State *L); + +/* not to be called directly */ +LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize, + size_t size); +LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int *size, + size_t size_elem, int limit, + const char *what); + +#endif + diff --git a/deps/rcheevos/test/lua/src/loadlib.c b/deps/rcheevos/test/lua/src/loadlib.c new file mode 100644 index 0000000000..4791e748b1 --- /dev/null +++ b/deps/rcheevos/test/lua/src/loadlib.c @@ -0,0 +1,790 @@ +/* +** $Id: loadlib.c,v 1.130 2017/01/12 17:14:26 roberto Exp $ +** Dynamic library loader for Lua +** See Copyright Notice in lua.h +** +** This module contains an implementation of loadlib for Unix systems +** that have dlfcn, an implementation for Windows, and a stub for other +** systems. +*/ + +#define loadlib_c +#define LUA_LIB + +#include "lprefix.h" + + +#include +#include +#include + +#include "lua.h" + +#include "lauxlib.h" +#include "lualib.h" + + +/* +** LUA_IGMARK is a mark to ignore all before it when building the +** luaopen_ function name. +*/ +#if !defined (LUA_IGMARK) +#define LUA_IGMARK "-" +#endif + + +/* +** LUA_CSUBSEP is the character that replaces dots in submodule names +** when searching for a C loader. +** LUA_LSUBSEP is the character that replaces dots in submodule names +** when searching for a Lua loader. +*/ +#if !defined(LUA_CSUBSEP) +#define LUA_CSUBSEP LUA_DIRSEP +#endif + +#if !defined(LUA_LSUBSEP) +#define LUA_LSUBSEP LUA_DIRSEP +#endif + + +/* prefix for open functions in C libraries */ +#define LUA_POF "luaopen_" + +/* separator for open functions in C libraries */ +#define LUA_OFSEP "_" + + +/* +** unique key for table in the registry that keeps handles +** for all loaded C libraries +*/ +static const int CLIBS = 0; + +#define LIB_FAIL "open" + + +#define setprogdir(L) ((void)0) + + +/* +** system-dependent functions +*/ + +/* +** unload library 'lib' +*/ +static void lsys_unloadlib (void *lib); + +/* +** load C library in file 'path'. If 'seeglb', load with all names in +** the library global. +** Returns the library; in case of error, returns NULL plus an +** error string in the stack. +*/ +static void *lsys_load (lua_State *L, const char *path, int seeglb); + +/* +** Try to find a function named 'sym' in library 'lib'. +** Returns the function; in case of error, returns NULL plus an +** error string in the stack. +*/ +static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym); + + + + +#if defined(LUA_USE_DLOPEN) /* { */ +/* +** {======================================================================== +** This is an implementation of loadlib based on the dlfcn interface. +** The dlfcn interface is available in Linux, SunOS, Solaris, IRIX, FreeBSD, +** NetBSD, AIX 4.2, HPUX 11, and probably most other Unix flavors, at least +** as an emulation layer on top of native functions. +** ========================================================================= +*/ + +#include + +/* +** Macro to convert pointer-to-void* to pointer-to-function. This cast +** is undefined according to ISO C, but POSIX assumes that it works. +** (The '__extension__' in gnu compilers is only to avoid warnings.) +*/ +#if defined(__GNUC__) +#define cast_func(p) (__extension__ (lua_CFunction)(p)) +#else +#define cast_func(p) ((lua_CFunction)(p)) +#endif + + +static void lsys_unloadlib (void *lib) { + dlclose(lib); +} + + +static void *lsys_load (lua_State *L, const char *path, int seeglb) { + void *lib = dlopen(path, RTLD_NOW | (seeglb ? RTLD_GLOBAL : RTLD_LOCAL)); + if (lib == NULL) lua_pushstring(L, dlerror()); + return lib; +} + + +static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) { + lua_CFunction f = cast_func(dlsym(lib, sym)); + if (f == NULL) lua_pushstring(L, dlerror()); + return f; +} + +/* }====================================================== */ + + + +#elif defined(LUA_DL_DLL) /* }{ */ +/* +** {====================================================================== +** This is an implementation of loadlib for Windows using native functions. +** ======================================================================= +*/ + +#include + + +/* +** optional flags for LoadLibraryEx +*/ +#if !defined(LUA_LLE_FLAGS) +#define LUA_LLE_FLAGS 0 +#endif + + +#undef setprogdir + + +/* +** Replace in the path (on the top of the stack) any occurrence +** of LUA_EXEC_DIR with the executable's path. +*/ +static void setprogdir (lua_State *L) { + char buff[MAX_PATH + 1]; + char *lb; + DWORD nsize = sizeof(buff)/sizeof(char); + DWORD n = GetModuleFileNameA(NULL, buff, nsize); /* get exec. name */ + if (n == 0 || n == nsize || (lb = strrchr(buff, '\\')) == NULL) + luaL_error(L, "unable to get ModuleFileName"); + else { + *lb = '\0'; /* cut name on the last '\\' to get the path */ + luaL_gsub(L, lua_tostring(L, -1), LUA_EXEC_DIR, buff); + lua_remove(L, -2); /* remove original string */ + } +} + + + + +static void pusherror (lua_State *L) { + int error = GetLastError(); + char buffer[128]; + if (FormatMessageA(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM, + NULL, error, 0, buffer, sizeof(buffer)/sizeof(char), NULL)) + lua_pushstring(L, buffer); + else + lua_pushfstring(L, "system error %d\n", error); +} + +static void lsys_unloadlib (void *lib) { + FreeLibrary((HMODULE)lib); +} + + +static void *lsys_load (lua_State *L, const char *path, int seeglb) { + HMODULE lib = LoadLibraryExA(path, NULL, LUA_LLE_FLAGS); + (void)(seeglb); /* not used: symbols are 'global' by default */ + if (lib == NULL) pusherror(L); + return lib; +} + + +static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) { + lua_CFunction f = (lua_CFunction)GetProcAddress((HMODULE)lib, sym); + if (f == NULL) pusherror(L); + return f; +} + +/* }====================================================== */ + + +#else /* }{ */ +/* +** {====================================================== +** Fallback for other systems +** ======================================================= +*/ + +#undef LIB_FAIL +#define LIB_FAIL "absent" + + +#define DLMSG "dynamic libraries not enabled; check your Lua installation" + + +static void lsys_unloadlib (void *lib) { + (void)(lib); /* not used */ +} + + +static void *lsys_load (lua_State *L, const char *path, int seeglb) { + (void)(path); (void)(seeglb); /* not used */ + lua_pushliteral(L, DLMSG); + return NULL; +} + + +static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) { + (void)(lib); (void)(sym); /* not used */ + lua_pushliteral(L, DLMSG); + return NULL; +} + +/* }====================================================== */ +#endif /* } */ + + +/* +** {================================================================== +** Set Paths +** =================================================================== +*/ + +/* +** LUA_PATH_VAR and LUA_CPATH_VAR are the names of the environment +** variables that Lua check to set its paths. +*/ +#if !defined(LUA_PATH_VAR) +#define LUA_PATH_VAR "LUA_PATH" +#endif + +#if !defined(LUA_CPATH_VAR) +#define LUA_CPATH_VAR "LUA_CPATH" +#endif + + +#define AUXMARK "\1" /* auxiliary mark */ + + +/* +** return registry.LUA_NOENV as a boolean +*/ +static int noenv (lua_State *L) { + int b; + lua_getfield(L, LUA_REGISTRYINDEX, "LUA_NOENV"); + b = lua_toboolean(L, -1); + lua_pop(L, 1); /* remove value */ + return b; +} + + +/* +** Set a path +*/ +static void setpath (lua_State *L, const char *fieldname, + const char *envname, + const char *dft) { + const char *nver = lua_pushfstring(L, "%s%s", envname, LUA_VERSUFFIX); + const char *path = getenv(nver); /* use versioned name */ + if (path == NULL) /* no environment variable? */ + path = getenv(envname); /* try unversioned name */ + if (path == NULL || noenv(L)) /* no environment variable? */ + lua_pushstring(L, dft); /* use default */ + else { + /* replace ";;" by ";AUXMARK;" and then AUXMARK by default path */ + path = luaL_gsub(L, path, LUA_PATH_SEP LUA_PATH_SEP, + LUA_PATH_SEP AUXMARK LUA_PATH_SEP); + luaL_gsub(L, path, AUXMARK, dft); + lua_remove(L, -2); /* remove result from 1st 'gsub' */ + } + setprogdir(L); + lua_setfield(L, -3, fieldname); /* package[fieldname] = path value */ + lua_pop(L, 1); /* pop versioned variable name */ +} + +/* }================================================================== */ + + +/* +** return registry.CLIBS[path] +*/ +static void *checkclib (lua_State *L, const char *path) { + void *plib; + lua_rawgetp(L, LUA_REGISTRYINDEX, &CLIBS); + lua_getfield(L, -1, path); + plib = lua_touserdata(L, -1); /* plib = CLIBS[path] */ + lua_pop(L, 2); /* pop CLIBS table and 'plib' */ + return plib; +} + + +/* +** registry.CLIBS[path] = plib -- for queries +** registry.CLIBS[#CLIBS + 1] = plib -- also keep a list of all libraries +*/ +static void addtoclib (lua_State *L, const char *path, void *plib) { + lua_rawgetp(L, LUA_REGISTRYINDEX, &CLIBS); + lua_pushlightuserdata(L, plib); + lua_pushvalue(L, -1); + lua_setfield(L, -3, path); /* CLIBS[path] = plib */ + lua_rawseti(L, -2, luaL_len(L, -2) + 1); /* CLIBS[#CLIBS + 1] = plib */ + lua_pop(L, 1); /* pop CLIBS table */ +} + + +/* +** __gc tag method for CLIBS table: calls 'lsys_unloadlib' for all lib +** handles in list CLIBS +*/ +static int gctm (lua_State *L) { + lua_Integer n = luaL_len(L, 1); + for (; n >= 1; n--) { /* for each handle, in reverse order */ + lua_rawgeti(L, 1, n); /* get handle CLIBS[n] */ + lsys_unloadlib(lua_touserdata(L, -1)); + lua_pop(L, 1); /* pop handle */ + } + return 0; +} + + + +/* error codes for 'lookforfunc' */ +#define ERRLIB 1 +#define ERRFUNC 2 + +/* +** Look for a C function named 'sym' in a dynamically loaded library +** 'path'. +** First, check whether the library is already loaded; if not, try +** to load it. +** Then, if 'sym' is '*', return true (as library has been loaded). +** Otherwise, look for symbol 'sym' in the library and push a +** C function with that symbol. +** Return 0 and 'true' or a function in the stack; in case of +** errors, return an error code and an error message in the stack. +*/ +static int lookforfunc (lua_State *L, const char *path, const char *sym) { + void *reg = checkclib(L, path); /* check loaded C libraries */ + if (reg == NULL) { /* must load library? */ + reg = lsys_load(L, path, *sym == '*'); /* global symbols if 'sym'=='*' */ + if (reg == NULL) return ERRLIB; /* unable to load library */ + addtoclib(L, path, reg); + } + if (*sym == '*') { /* loading only library (no function)? */ + lua_pushboolean(L, 1); /* return 'true' */ + return 0; /* no errors */ + } + else { + lua_CFunction f = lsys_sym(L, reg, sym); + if (f == NULL) + return ERRFUNC; /* unable to find function */ + lua_pushcfunction(L, f); /* else create new function */ + return 0; /* no errors */ + } +} + + +static int ll_loadlib (lua_State *L) { + const char *path = luaL_checkstring(L, 1); + const char *init = luaL_checkstring(L, 2); + int stat = lookforfunc(L, path, init); + if (stat == 0) /* no errors? */ + return 1; /* return the loaded function */ + else { /* error; error message is on stack top */ + lua_pushnil(L); + lua_insert(L, -2); + lua_pushstring(L, (stat == ERRLIB) ? LIB_FAIL : "init"); + return 3; /* return nil, error message, and where */ + } +} + + + +/* +** {====================================================== +** 'require' function +** ======================================================= +*/ + + +static int readable (const char *filename) { + FILE *f = fopen(filename, "r"); /* try to open file */ + if (f == NULL) return 0; /* open failed */ + fclose(f); + return 1; +} + + +static const char *pushnexttemplate (lua_State *L, const char *path) { + const char *l; + while (*path == *LUA_PATH_SEP) path++; /* skip separators */ + if (*path == '\0') return NULL; /* no more templates */ + l = strchr(path, *LUA_PATH_SEP); /* find next separator */ + if (l == NULL) l = path + strlen(path); + lua_pushlstring(L, path, l - path); /* template */ + return l; +} + + +static const char *searchpath (lua_State *L, const char *name, + const char *path, + const char *sep, + const char *dirsep) { + luaL_Buffer msg; /* to build error message */ + luaL_buffinit(L, &msg); + if (*sep != '\0') /* non-empty separator? */ + name = luaL_gsub(L, name, sep, dirsep); /* replace it by 'dirsep' */ + while ((path = pushnexttemplate(L, path)) != NULL) { + const char *filename = luaL_gsub(L, lua_tostring(L, -1), + LUA_PATH_MARK, name); + lua_remove(L, -2); /* remove path template */ + if (readable(filename)) /* does file exist and is readable? */ + return filename; /* return that file name */ + lua_pushfstring(L, "\n\tno file '%s'", filename); + lua_remove(L, -2); /* remove file name */ + luaL_addvalue(&msg); /* concatenate error msg. entry */ + } + luaL_pushresult(&msg); /* create error message */ + return NULL; /* not found */ +} + + +static int ll_searchpath (lua_State *L) { + const char *f = searchpath(L, luaL_checkstring(L, 1), + luaL_checkstring(L, 2), + luaL_optstring(L, 3, "."), + luaL_optstring(L, 4, LUA_DIRSEP)); + if (f != NULL) return 1; + else { /* error message is on top of the stack */ + lua_pushnil(L); + lua_insert(L, -2); + return 2; /* return nil + error message */ + } +} + + +static const char *findfile (lua_State *L, const char *name, + const char *pname, + const char *dirsep) { + const char *path; + lua_getfield(L, lua_upvalueindex(1), pname); + path = lua_tostring(L, -1); + if (path == NULL) + luaL_error(L, "'package.%s' must be a string", pname); + return searchpath(L, name, path, ".", dirsep); +} + + +static int checkload (lua_State *L, int stat, const char *filename) { + if (stat) { /* module loaded successfully? */ + lua_pushstring(L, filename); /* will be 2nd argument to module */ + return 2; /* return open function and file name */ + } + else + return luaL_error(L, "error loading module '%s' from file '%s':\n\t%s", + lua_tostring(L, 1), filename, lua_tostring(L, -1)); +} + + +static int searcher_Lua (lua_State *L) { + const char *filename; + const char *name = luaL_checkstring(L, 1); + filename = findfile(L, name, "path", LUA_LSUBSEP); + if (filename == NULL) return 1; /* module not found in this path */ + return checkload(L, (luaL_loadfile(L, filename) == LUA_OK), filename); +} + + +/* +** Try to find a load function for module 'modname' at file 'filename'. +** First, change '.' to '_' in 'modname'; then, if 'modname' has +** the form X-Y (that is, it has an "ignore mark"), build a function +** name "luaopen_X" and look for it. (For compatibility, if that +** fails, it also tries "luaopen_Y".) If there is no ignore mark, +** look for a function named "luaopen_modname". +*/ +static int loadfunc (lua_State *L, const char *filename, const char *modname) { + const char *openfunc; + const char *mark; + modname = luaL_gsub(L, modname, ".", LUA_OFSEP); + mark = strchr(modname, *LUA_IGMARK); + if (mark) { + int stat; + openfunc = lua_pushlstring(L, modname, mark - modname); + openfunc = lua_pushfstring(L, LUA_POF"%s", openfunc); + stat = lookforfunc(L, filename, openfunc); + if (stat != ERRFUNC) return stat; + modname = mark + 1; /* else go ahead and try old-style name */ + } + openfunc = lua_pushfstring(L, LUA_POF"%s", modname); + return lookforfunc(L, filename, openfunc); +} + + +static int searcher_C (lua_State *L) { + const char *name = luaL_checkstring(L, 1); + const char *filename = findfile(L, name, "cpath", LUA_CSUBSEP); + if (filename == NULL) return 1; /* module not found in this path */ + return checkload(L, (loadfunc(L, filename, name) == 0), filename); +} + + +static int searcher_Croot (lua_State *L) { + const char *filename; + const char *name = luaL_checkstring(L, 1); + const char *p = strchr(name, '.'); + int stat; + if (p == NULL) return 0; /* is root */ + lua_pushlstring(L, name, p - name); + filename = findfile(L, lua_tostring(L, -1), "cpath", LUA_CSUBSEP); + if (filename == NULL) return 1; /* root not found */ + if ((stat = loadfunc(L, filename, name)) != 0) { + if (stat != ERRFUNC) + return checkload(L, 0, filename); /* real error */ + else { /* open function not found */ + lua_pushfstring(L, "\n\tno module '%s' in file '%s'", name, filename); + return 1; + } + } + lua_pushstring(L, filename); /* will be 2nd argument to module */ + return 2; +} + + +static int searcher_preload (lua_State *L) { + const char *name = luaL_checkstring(L, 1); + lua_getfield(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE); + if (lua_getfield(L, -1, name) == LUA_TNIL) /* not found? */ + lua_pushfstring(L, "\n\tno field package.preload['%s']", name); + return 1; +} + + +static void findloader (lua_State *L, const char *name) { + int i; + luaL_Buffer msg; /* to build error message */ + luaL_buffinit(L, &msg); + /* push 'package.searchers' to index 3 in the stack */ + if (lua_getfield(L, lua_upvalueindex(1), "searchers") != LUA_TTABLE) + luaL_error(L, "'package.searchers' must be a table"); + /* iterate over available searchers to find a loader */ + for (i = 1; ; i++) { + if (lua_rawgeti(L, 3, i) == LUA_TNIL) { /* no more searchers? */ + lua_pop(L, 1); /* remove nil */ + luaL_pushresult(&msg); /* create error message */ + luaL_error(L, "module '%s' not found:%s", name, lua_tostring(L, -1)); + } + lua_pushstring(L, name); + lua_call(L, 1, 2); /* call it */ + if (lua_isfunction(L, -2)) /* did it find a loader? */ + return; /* module loader found */ + else if (lua_isstring(L, -2)) { /* searcher returned error message? */ + lua_pop(L, 1); /* remove extra return */ + luaL_addvalue(&msg); /* concatenate error message */ + } + else + lua_pop(L, 2); /* remove both returns */ + } +} + + +static int ll_require (lua_State *L) { + const char *name = luaL_checkstring(L, 1); + lua_settop(L, 1); /* LOADED table will be at index 2 */ + lua_getfield(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE); + lua_getfield(L, 2, name); /* LOADED[name] */ + if (lua_toboolean(L, -1)) /* is it there? */ + return 1; /* package is already loaded */ + /* else must load package */ + lua_pop(L, 1); /* remove 'getfield' result */ + findloader(L, name); + lua_pushstring(L, name); /* pass name as argument to module loader */ + lua_insert(L, -2); /* name is 1st argument (before search data) */ + lua_call(L, 2, 1); /* run loader to load module */ + if (!lua_isnil(L, -1)) /* non-nil return? */ + lua_setfield(L, 2, name); /* LOADED[name] = returned value */ + if (lua_getfield(L, 2, name) == LUA_TNIL) { /* module set no value? */ + lua_pushboolean(L, 1); /* use true as result */ + lua_pushvalue(L, -1); /* extra copy to be returned */ + lua_setfield(L, 2, name); /* LOADED[name] = true */ + } + return 1; +} + +/* }====================================================== */ + + + +/* +** {====================================================== +** 'module' function +** ======================================================= +*/ +#if defined(LUA_COMPAT_MODULE) + +/* +** changes the environment variable of calling function +*/ +static void set_env (lua_State *L) { + lua_Debug ar; + if (lua_getstack(L, 1, &ar) == 0 || + lua_getinfo(L, "f", &ar) == 0 || /* get calling function */ + lua_iscfunction(L, -1)) + luaL_error(L, "'module' not called from a Lua function"); + lua_pushvalue(L, -2); /* copy new environment table to top */ + lua_setupvalue(L, -2, 1); + lua_pop(L, 1); /* remove function */ +} + + +static void dooptions (lua_State *L, int n) { + int i; + for (i = 2; i <= n; i++) { + if (lua_isfunction(L, i)) { /* avoid 'calling' extra info. */ + lua_pushvalue(L, i); /* get option (a function) */ + lua_pushvalue(L, -2); /* module */ + lua_call(L, 1, 0); + } + } +} + + +static void modinit (lua_State *L, const char *modname) { + const char *dot; + lua_pushvalue(L, -1); + lua_setfield(L, -2, "_M"); /* module._M = module */ + lua_pushstring(L, modname); + lua_setfield(L, -2, "_NAME"); + dot = strrchr(modname, '.'); /* look for last dot in module name */ + if (dot == NULL) dot = modname; + else dot++; + /* set _PACKAGE as package name (full module name minus last part) */ + lua_pushlstring(L, modname, dot - modname); + lua_setfield(L, -2, "_PACKAGE"); +} + + +static int ll_module (lua_State *L) { + const char *modname = luaL_checkstring(L, 1); + int lastarg = lua_gettop(L); /* last parameter */ + luaL_pushmodule(L, modname, 1); /* get/create module table */ + /* check whether table already has a _NAME field */ + if (lua_getfield(L, -1, "_NAME") != LUA_TNIL) + lua_pop(L, 1); /* table is an initialized module */ + else { /* no; initialize it */ + lua_pop(L, 1); + modinit(L, modname); + } + lua_pushvalue(L, -1); + set_env(L); + dooptions(L, lastarg); + return 1; +} + + +static int ll_seeall (lua_State *L) { + luaL_checktype(L, 1, LUA_TTABLE); + if (!lua_getmetatable(L, 1)) { + lua_createtable(L, 0, 1); /* create new metatable */ + lua_pushvalue(L, -1); + lua_setmetatable(L, 1); + } + lua_pushglobaltable(L); + lua_setfield(L, -2, "__index"); /* mt.__index = _G */ + return 0; +} + +#endif +/* }====================================================== */ + + + +static const luaL_Reg pk_funcs[] = { + {"loadlib", ll_loadlib}, + {"searchpath", ll_searchpath}, +#if defined(LUA_COMPAT_MODULE) + {"seeall", ll_seeall}, +#endif + /* placeholders */ + {"preload", NULL}, + {"cpath", NULL}, + {"path", NULL}, + {"searchers", NULL}, + {"loaded", NULL}, + {NULL, NULL} +}; + + +static const luaL_Reg ll_funcs[] = { +#if defined(LUA_COMPAT_MODULE) + {"module", ll_module}, +#endif + {"require", ll_require}, + {NULL, NULL} +}; + + +static void createsearcherstable (lua_State *L) { + static const lua_CFunction searchers[] = + {searcher_preload, searcher_Lua, searcher_C, searcher_Croot, NULL}; + int i; + /* create 'searchers' table */ + lua_createtable(L, sizeof(searchers)/sizeof(searchers[0]) - 1, 0); + /* fill it with predefined searchers */ + for (i=0; searchers[i] != NULL; i++) { + lua_pushvalue(L, -2); /* set 'package' as upvalue for all searchers */ + lua_pushcclosure(L, searchers[i], 1); + lua_rawseti(L, -2, i+1); + } +#if defined(LUA_COMPAT_LOADERS) + lua_pushvalue(L, -1); /* make a copy of 'searchers' table */ + lua_setfield(L, -3, "loaders"); /* put it in field 'loaders' */ +#endif + lua_setfield(L, -2, "searchers"); /* put it in field 'searchers' */ +} + + +/* +** create table CLIBS to keep track of loaded C libraries, +** setting a finalizer to close all libraries when closing state. +*/ +static void createclibstable (lua_State *L) { + lua_newtable(L); /* create CLIBS table */ + lua_createtable(L, 0, 1); /* create metatable for CLIBS */ + lua_pushcfunction(L, gctm); + lua_setfield(L, -2, "__gc"); /* set finalizer for CLIBS table */ + lua_setmetatable(L, -2); + lua_rawsetp(L, LUA_REGISTRYINDEX, &CLIBS); /* set CLIBS table in registry */ +} + + +LUAMOD_API int luaopen_package (lua_State *L) { + createclibstable(L); + luaL_newlib(L, pk_funcs); /* create 'package' table */ + createsearcherstable(L); + /* set paths */ + setpath(L, "path", LUA_PATH_VAR, LUA_PATH_DEFAULT); + setpath(L, "cpath", LUA_CPATH_VAR, LUA_CPATH_DEFAULT); + /* store config information */ + lua_pushliteral(L, LUA_DIRSEP "\n" LUA_PATH_SEP "\n" LUA_PATH_MARK "\n" + LUA_EXEC_DIR "\n" LUA_IGMARK "\n"); + lua_setfield(L, -2, "config"); + /* set field 'loaded' */ + luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE); + lua_setfield(L, -2, "loaded"); + /* set field 'preload' */ + luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE); + lua_setfield(L, -2, "preload"); + lua_pushglobaltable(L); + lua_pushvalue(L, -2); /* set 'package' as upvalue for next lib */ + luaL_setfuncs(L, ll_funcs, 1); /* open lib into global table */ + lua_pop(L, 1); /* pop global table */ + return 1; /* return 'package' table */ +} + diff --git a/deps/rcheevos/test/lua/src/lobject.c b/deps/rcheevos/test/lua/src/lobject.c new file mode 100644 index 0000000000..2da76899a2 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lobject.c @@ -0,0 +1,521 @@ +/* +** $Id: lobject.c,v 2.113 2016/12/22 13:08:50 roberto Exp $ +** Some generic functions over Lua objects +** See Copyright Notice in lua.h +*/ + +#define lobject_c +#define LUA_CORE + +#include "lprefix.h" + + +#include +#include +#include +#include +#include +#include + +#include "lua.h" + +#include "lctype.h" +#include "ldebug.h" +#include "ldo.h" +#include "lmem.h" +#include "lobject.h" +#include "lstate.h" +#include "lstring.h" +#include "lvm.h" + + + +LUAI_DDEF const TValue luaO_nilobject_ = {NILCONSTANT}; + + +/* +** converts an integer to a "floating point byte", represented as +** (eeeeexxx), where the real value is (1xxx) * 2^(eeeee - 1) if +** eeeee != 0 and (xxx) otherwise. +*/ +int luaO_int2fb (unsigned int x) { + int e = 0; /* exponent */ + if (x < 8) return x; + while (x >= (8 << 4)) { /* coarse steps */ + x = (x + 0xf) >> 4; /* x = ceil(x / 16) */ + e += 4; + } + while (x >= (8 << 1)) { /* fine steps */ + x = (x + 1) >> 1; /* x = ceil(x / 2) */ + e++; + } + return ((e+1) << 3) | (cast_int(x) - 8); +} + + +/* converts back */ +int luaO_fb2int (int x) { + return (x < 8) ? x : ((x & 7) + 8) << ((x >> 3) - 1); +} + + +/* +** Computes ceil(log2(x)) +*/ +int luaO_ceillog2 (unsigned int x) { + static const lu_byte log_2[256] = { /* log_2[i] = ceil(log2(i - 1)) */ + 0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5, + 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6, + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8 + }; + int l = 0; + x--; + while (x >= 256) { l += 8; x >>= 8; } + return l + log_2[x]; +} + + +static lua_Integer intarith (lua_State *L, int op, lua_Integer v1, + lua_Integer v2) { + switch (op) { + case LUA_OPADD: return intop(+, v1, v2); + case LUA_OPSUB:return intop(-, v1, v2); + case LUA_OPMUL:return intop(*, v1, v2); + case LUA_OPMOD: return luaV_mod(L, v1, v2); + case LUA_OPIDIV: return luaV_div(L, v1, v2); + case LUA_OPBAND: return intop(&, v1, v2); + case LUA_OPBOR: return intop(|, v1, v2); + case LUA_OPBXOR: return intop(^, v1, v2); + case LUA_OPSHL: return luaV_shiftl(v1, v2); + case LUA_OPSHR: return luaV_shiftl(v1, -v2); + case LUA_OPUNM: return intop(-, 0, v1); + case LUA_OPBNOT: return intop(^, ~l_castS2U(0), v1); + default: lua_assert(0); return 0; + } +} + + +static lua_Number numarith (lua_State *L, int op, lua_Number v1, + lua_Number v2) { + switch (op) { + case LUA_OPADD: return luai_numadd(L, v1, v2); + case LUA_OPSUB: return luai_numsub(L, v1, v2); + case LUA_OPMUL: return luai_nummul(L, v1, v2); + case LUA_OPDIV: return luai_numdiv(L, v1, v2); + case LUA_OPPOW: return luai_numpow(L, v1, v2); + case LUA_OPIDIV: return luai_numidiv(L, v1, v2); + case LUA_OPUNM: return luai_numunm(L, v1); + case LUA_OPMOD: { + lua_Number m; + luai_nummod(L, v1, v2, m); + return m; + } + default: lua_assert(0); return 0; + } +} + + +void luaO_arith (lua_State *L, int op, const TValue *p1, const TValue *p2, + TValue *res) { + switch (op) { + case LUA_OPBAND: case LUA_OPBOR: case LUA_OPBXOR: + case LUA_OPSHL: case LUA_OPSHR: + case LUA_OPBNOT: { /* operate only on integers */ + lua_Integer i1; lua_Integer i2; + if (tointeger(p1, &i1) && tointeger(p2, &i2)) { + setivalue(res, intarith(L, op, i1, i2)); + return; + } + else break; /* go to the end */ + } + case LUA_OPDIV: case LUA_OPPOW: { /* operate only on floats */ + lua_Number n1; lua_Number n2; + if (tonumber(p1, &n1) && tonumber(p2, &n2)) { + setfltvalue(res, numarith(L, op, n1, n2)); + return; + } + else break; /* go to the end */ + } + default: { /* other operations */ + lua_Number n1; lua_Number n2; + if (ttisinteger(p1) && ttisinteger(p2)) { + setivalue(res, intarith(L, op, ivalue(p1), ivalue(p2))); + return; + } + else if (tonumber(p1, &n1) && tonumber(p2, &n2)) { + setfltvalue(res, numarith(L, op, n1, n2)); + return; + } + else break; /* go to the end */ + } + } + /* could not perform raw operation; try metamethod */ + lua_assert(L != NULL); /* should not fail when folding (compile time) */ + luaT_trybinTM(L, p1, p2, res, cast(TMS, (op - LUA_OPADD) + TM_ADD)); +} + + +int luaO_hexavalue (int c) { + if (lisdigit(c)) return c - '0'; + else return (ltolower(c) - 'a') + 10; +} + + +static int isneg (const char **s) { + if (**s == '-') { (*s)++; return 1; } + else if (**s == '+') (*s)++; + return 0; +} + + + +/* +** {================================================================== +** Lua's implementation for 'lua_strx2number' +** =================================================================== +*/ + +#if !defined(lua_strx2number) + +/* maximum number of significant digits to read (to avoid overflows + even with single floats) */ +#define MAXSIGDIG 30 + +/* +** convert an hexadecimal numeric string to a number, following +** C99 specification for 'strtod' +*/ +static lua_Number lua_strx2number (const char *s, char **endptr) { + int dot = lua_getlocaledecpoint(); + lua_Number r = 0.0; /* result (accumulator) */ + int sigdig = 0; /* number of significant digits */ + int nosigdig = 0; /* number of non-significant digits */ + int e = 0; /* exponent correction */ + int neg; /* 1 if number is negative */ + int hasdot = 0; /* true after seen a dot */ + *endptr = cast(char *, s); /* nothing is valid yet */ + while (lisspace(cast_uchar(*s))) s++; /* skip initial spaces */ + neg = isneg(&s); /* check signal */ + if (!(*s == '0' && (*(s + 1) == 'x' || *(s + 1) == 'X'))) /* check '0x' */ + return 0.0; /* invalid format (no '0x') */ + for (s += 2; ; s++) { /* skip '0x' and read numeral */ + if (*s == dot) { + if (hasdot) break; /* second dot? stop loop */ + else hasdot = 1; + } + else if (lisxdigit(cast_uchar(*s))) { + if (sigdig == 0 && *s == '0') /* non-significant digit (zero)? */ + nosigdig++; + else if (++sigdig <= MAXSIGDIG) /* can read it without overflow? */ + r = (r * cast_num(16.0)) + luaO_hexavalue(*s); + else e++; /* too many digits; ignore, but still count for exponent */ + if (hasdot) e--; /* decimal digit? correct exponent */ + } + else break; /* neither a dot nor a digit */ + } + if (nosigdig + sigdig == 0) /* no digits? */ + return 0.0; /* invalid format */ + *endptr = cast(char *, s); /* valid up to here */ + e *= 4; /* each digit multiplies/divides value by 2^4 */ + if (*s == 'p' || *s == 'P') { /* exponent part? */ + int exp1 = 0; /* exponent value */ + int neg1; /* exponent signal */ + s++; /* skip 'p' */ + neg1 = isneg(&s); /* signal */ + if (!lisdigit(cast_uchar(*s))) + return 0.0; /* invalid; must have at least one digit */ + while (lisdigit(cast_uchar(*s))) /* read exponent */ + exp1 = exp1 * 10 + *(s++) - '0'; + if (neg1) exp1 = -exp1; + e += exp1; + *endptr = cast(char *, s); /* valid up to here */ + } + if (neg) r = -r; + return l_mathop(ldexp)(r, e); +} + +#endif +/* }====================================================== */ + + +/* maximum length of a numeral */ +#if !defined (L_MAXLENNUM) +#define L_MAXLENNUM 200 +#endif + +static const char *l_str2dloc (const char *s, lua_Number *result, int mode) { + char *endptr; + *result = (mode == 'x') ? lua_strx2number(s, &endptr) /* try to convert */ + : lua_str2number(s, &endptr); + if (endptr == s) return NULL; /* nothing recognized? */ + while (lisspace(cast_uchar(*endptr))) endptr++; /* skip trailing spaces */ + return (*endptr == '\0') ? endptr : NULL; /* OK if no trailing characters */ +} + + +/* +** Convert string 's' to a Lua number (put in 'result'). Return NULL +** on fail or the address of the ending '\0' on success. +** 'pmode' points to (and 'mode' contains) special things in the string: +** - 'x'/'X' means an hexadecimal numeral +** - 'n'/'N' means 'inf' or 'nan' (which should be rejected) +** - '.' just optimizes the search for the common case (nothing special) +** This function accepts both the current locale or a dot as the radix +** mark. If the convertion fails, it may mean number has a dot but +** locale accepts something else. In that case, the code copies 's' +** to a buffer (because 's' is read-only), changes the dot to the +** current locale radix mark, and tries to convert again. +*/ +static const char *l_str2d (const char *s, lua_Number *result) { + const char *endptr; + const char *pmode = strpbrk(s, ".xXnN"); + int mode = pmode ? ltolower(cast_uchar(*pmode)) : 0; + if (mode == 'n') /* reject 'inf' and 'nan' */ + return NULL; + endptr = l_str2dloc(s, result, mode); /* try to convert */ + if (endptr == NULL) { /* failed? may be a different locale */ + char buff[L_MAXLENNUM + 1]; + const char *pdot = strchr(s, '.'); + if (strlen(s) > L_MAXLENNUM || pdot == NULL) + return NULL; /* string too long or no dot; fail */ + strcpy(buff, s); /* copy string to buffer */ + buff[pdot - s] = lua_getlocaledecpoint(); /* correct decimal point */ + endptr = l_str2dloc(buff, result, mode); /* try again */ + if (endptr != NULL) + endptr = s + (endptr - buff); /* make relative to 's' */ + } + return endptr; +} + + +#define MAXBY10 cast(lua_Unsigned, LUA_MAXINTEGER / 10) +#define MAXLASTD cast_int(LUA_MAXINTEGER % 10) + +static const char *l_str2int (const char *s, lua_Integer *result) { + lua_Unsigned a = 0; + int empty = 1; + int neg; + while (lisspace(cast_uchar(*s))) s++; /* skip initial spaces */ + neg = isneg(&s); + if (s[0] == '0' && + (s[1] == 'x' || s[1] == 'X')) { /* hex? */ + s += 2; /* skip '0x' */ + for (; lisxdigit(cast_uchar(*s)); s++) { + a = a * 16 + luaO_hexavalue(*s); + empty = 0; + } + } + else { /* decimal */ + for (; lisdigit(cast_uchar(*s)); s++) { + int d = *s - '0'; + if (a >= MAXBY10 && (a > MAXBY10 || d > MAXLASTD + neg)) /* overflow? */ + return NULL; /* do not accept it (as integer) */ + a = a * 10 + d; + empty = 0; + } + } + while (lisspace(cast_uchar(*s))) s++; /* skip trailing spaces */ + if (empty || *s != '\0') return NULL; /* something wrong in the numeral */ + else { + *result = l_castU2S((neg) ? 0u - a : a); + return s; + } +} + + +size_t luaO_str2num (const char *s, TValue *o) { + lua_Integer i; lua_Number n; + const char *e; + if ((e = l_str2int(s, &i)) != NULL) { /* try as an integer */ + setivalue(o, i); + } + else if ((e = l_str2d(s, &n)) != NULL) { /* else try as a float */ + setfltvalue(o, n); + } + else + return 0; /* conversion failed */ + return (e - s) + 1; /* success; return string size */ +} + + +int luaO_utf8esc (char *buff, unsigned long x) { + int n = 1; /* number of bytes put in buffer (backwards) */ + lua_assert(x <= 0x10FFFF); + if (x < 0x80) /* ascii? */ + buff[UTF8BUFFSZ - 1] = cast(char, x); + else { /* need continuation bytes */ + unsigned int mfb = 0x3f; /* maximum that fits in first byte */ + do { /* add continuation bytes */ + buff[UTF8BUFFSZ - (n++)] = cast(char, 0x80 | (x & 0x3f)); + x >>= 6; /* remove added bits */ + mfb >>= 1; /* now there is one less bit available in first byte */ + } while (x > mfb); /* still needs continuation byte? */ + buff[UTF8BUFFSZ - n] = cast(char, (~mfb << 1) | x); /* add first byte */ + } + return n; +} + + +/* maximum length of the conversion of a number to a string */ +#define MAXNUMBER2STR 50 + + +/* +** Convert a number object to a string +*/ +void luaO_tostring (lua_State *L, StkId obj) { + char buff[MAXNUMBER2STR]; + size_t len; + lua_assert(ttisnumber(obj)); + if (ttisinteger(obj)) + len = lua_integer2str(buff, sizeof(buff), ivalue(obj)); + else { + len = lua_number2str(buff, sizeof(buff), fltvalue(obj)); +#if !defined(LUA_COMPAT_FLOATSTRING) + if (buff[strspn(buff, "-0123456789")] == '\0') { /* looks like an int? */ + buff[len++] = lua_getlocaledecpoint(); + buff[len++] = '0'; /* adds '.0' to result */ + } +#endif + } + setsvalue2s(L, obj, luaS_newlstr(L, buff, len)); +} + + +static void pushstr (lua_State *L, const char *str, size_t l) { + setsvalue2s(L, L->top, luaS_newlstr(L, str, l)); + luaD_inctop(L); +} + + +/* +** this function handles only '%d', '%c', '%f', '%p', and '%s' + conventional formats, plus Lua-specific '%I' and '%U' +*/ +const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) { + int n = 0; + for (;;) { + const char *e = strchr(fmt, '%'); + if (e == NULL) break; + pushstr(L, fmt, e - fmt); + switch (*(e+1)) { + case 's': { /* zero-terminated string */ + const char *s = va_arg(argp, char *); + if (s == NULL) s = "(null)"; + pushstr(L, s, strlen(s)); + break; + } + case 'c': { /* an 'int' as a character */ + char buff = cast(char, va_arg(argp, int)); + if (lisprint(cast_uchar(buff))) + pushstr(L, &buff, 1); + else /* non-printable character; print its code */ + luaO_pushfstring(L, "<\\%d>", cast_uchar(buff)); + break; + } + case 'd': { /* an 'int' */ + setivalue(L->top, va_arg(argp, int)); + goto top2str; + } + case 'I': { /* a 'lua_Integer' */ + setivalue(L->top, cast(lua_Integer, va_arg(argp, l_uacInt))); + goto top2str; + } + case 'f': { /* a 'lua_Number' */ + setfltvalue(L->top, cast_num(va_arg(argp, l_uacNumber))); + top2str: /* convert the top element to a string */ + luaD_inctop(L); + luaO_tostring(L, L->top - 1); + break; + } + case 'p': { /* a pointer */ + char buff[4*sizeof(void *) + 8]; /* should be enough space for a '%p' */ + int l = l_sprintf(buff, sizeof(buff), "%p", va_arg(argp, void *)); + pushstr(L, buff, l); + break; + } + case 'U': { /* an 'int' as a UTF-8 sequence */ + char buff[UTF8BUFFSZ]; + int l = luaO_utf8esc(buff, cast(long, va_arg(argp, long))); + pushstr(L, buff + UTF8BUFFSZ - l, l); + break; + } + case '%': { + pushstr(L, "%", 1); + break; + } + default: { + luaG_runerror(L, "invalid option '%%%c' to 'lua_pushfstring'", + *(e + 1)); + } + } + n += 2; + fmt = e+2; + } + luaD_checkstack(L, 1); + pushstr(L, fmt, strlen(fmt)); + if (n > 0) luaV_concat(L, n + 1); + return svalue(L->top - 1); +} + + +const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) { + const char *msg; + va_list argp; + va_start(argp, fmt); + msg = luaO_pushvfstring(L, fmt, argp); + va_end(argp); + return msg; +} + + +/* number of chars of a literal string without the ending \0 */ +#define LL(x) (sizeof(x)/sizeof(char) - 1) + +#define RETS "..." +#define PRE "[string \"" +#define POS "\"]" + +#define addstr(a,b,l) ( memcpy(a,b,(l) * sizeof(char)), a += (l) ) + +void luaO_chunkid (char *out, const char *source, size_t bufflen) { + size_t l = strlen(source); + if (*source == '=') { /* 'literal' source */ + if (l <= bufflen) /* small enough? */ + memcpy(out, source + 1, l * sizeof(char)); + else { /* truncate it */ + addstr(out, source + 1, bufflen - 1); + *out = '\0'; + } + } + else if (*source == '@') { /* file name */ + if (l <= bufflen) /* small enough? */ + memcpy(out, source + 1, l * sizeof(char)); + else { /* add '...' before rest of name */ + addstr(out, RETS, LL(RETS)); + bufflen -= LL(RETS); + memcpy(out, source + 1 + l - bufflen, bufflen * sizeof(char)); + } + } + else { /* string; format as [string "source"] */ + const char *nl = strchr(source, '\n'); /* find first new line (if any) */ + addstr(out, PRE, LL(PRE)); /* add prefix */ + bufflen -= LL(PRE RETS POS) + 1; /* save space for prefix+suffix+'\0' */ + if (l < bufflen && nl == NULL) { /* small one-line source? */ + addstr(out, source, l); /* keep it */ + } + else { + if (nl != NULL) l = nl - source; /* stop at first newline */ + if (l > bufflen) l = bufflen; + addstr(out, source, l); + addstr(out, RETS, LL(RETS)); + } + memcpy(out, POS, (LL(POS) + 1) * sizeof(char)); + } +} + diff --git a/deps/rcheevos/test/lua/src/lobject.h b/deps/rcheevos/test/lua/src/lobject.h new file mode 100644 index 0000000000..3c04228949 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lobject.h @@ -0,0 +1,549 @@ +/* +** $Id: lobject.h,v 2.117 2016/08/01 19:51:24 roberto Exp $ +** Type definitions for Lua objects +** See Copyright Notice in lua.h +*/ + + +#ifndef lobject_h +#define lobject_h + + +#include + + +#include "llimits.h" +#include "lua.h" + + +/* +** Extra tags for non-values +*/ +#define LUA_TPROTO LUA_NUMTAGS /* function prototypes */ +#define LUA_TDEADKEY (LUA_NUMTAGS+1) /* removed keys in tables */ + +/* +** number of all possible tags (including LUA_TNONE but excluding DEADKEY) +*/ +#define LUA_TOTALTAGS (LUA_TPROTO + 2) + + +/* +** tags for Tagged Values have the following use of bits: +** bits 0-3: actual tag (a LUA_T* value) +** bits 4-5: variant bits +** bit 6: whether value is collectable +*/ + + +/* +** LUA_TFUNCTION variants: +** 0 - Lua function +** 1 - light C function +** 2 - regular C function (closure) +*/ + +/* Variant tags for functions */ +#define LUA_TLCL (LUA_TFUNCTION | (0 << 4)) /* Lua closure */ +#define LUA_TLCF (LUA_TFUNCTION | (1 << 4)) /* light C function */ +#define LUA_TCCL (LUA_TFUNCTION | (2 << 4)) /* C closure */ + + +/* Variant tags for strings */ +#define LUA_TSHRSTR (LUA_TSTRING | (0 << 4)) /* short strings */ +#define LUA_TLNGSTR (LUA_TSTRING | (1 << 4)) /* long strings */ + + +/* Variant tags for numbers */ +#define LUA_TNUMFLT (LUA_TNUMBER | (0 << 4)) /* float numbers */ +#define LUA_TNUMINT (LUA_TNUMBER | (1 << 4)) /* integer numbers */ + + +/* Bit mark for collectable types */ +#define BIT_ISCOLLECTABLE (1 << 6) + +/* mark a tag as collectable */ +#define ctb(t) ((t) | BIT_ISCOLLECTABLE) + + +/* +** Common type for all collectable objects +*/ +typedef struct GCObject GCObject; + + +/* +** Common Header for all collectable objects (in macro form, to be +** included in other objects) +*/ +#define CommonHeader GCObject *next; lu_byte tt; lu_byte marked + + +/* +** Common type has only the common header +*/ +struct GCObject { + CommonHeader; +}; + + + + +/* +** Tagged Values. This is the basic representation of values in Lua, +** an actual value plus a tag with its type. +*/ + +/* +** Union of all Lua values +*/ +typedef union Value { + GCObject *gc; /* collectable objects */ + void *p; /* light userdata */ + int b; /* booleans */ + lua_CFunction f; /* light C functions */ + lua_Integer i; /* integer numbers */ + lua_Number n; /* float numbers */ +} Value; + + +#define TValuefields Value value_; int tt_ + + +typedef struct lua_TValue { + TValuefields; +} TValue; + + + +/* macro defining a nil value */ +#define NILCONSTANT {NULL}, LUA_TNIL + + +#define val_(o) ((o)->value_) + + +/* raw type tag of a TValue */ +#define rttype(o) ((o)->tt_) + +/* tag with no variants (bits 0-3) */ +#define novariant(x) ((x) & 0x0F) + +/* type tag of a TValue (bits 0-3 for tags + variant bits 4-5) */ +#define ttype(o) (rttype(o) & 0x3F) + +/* type tag of a TValue with no variants (bits 0-3) */ +#define ttnov(o) (novariant(rttype(o))) + + +/* Macros to test type */ +#define checktag(o,t) (rttype(o) == (t)) +#define checktype(o,t) (ttnov(o) == (t)) +#define ttisnumber(o) checktype((o), LUA_TNUMBER) +#define ttisfloat(o) checktag((o), LUA_TNUMFLT) +#define ttisinteger(o) checktag((o), LUA_TNUMINT) +#define ttisnil(o) checktag((o), LUA_TNIL) +#define ttisboolean(o) checktag((o), LUA_TBOOLEAN) +#define ttislightuserdata(o) checktag((o), LUA_TLIGHTUSERDATA) +#define ttisstring(o) checktype((o), LUA_TSTRING) +#define ttisshrstring(o) checktag((o), ctb(LUA_TSHRSTR)) +#define ttislngstring(o) checktag((o), ctb(LUA_TLNGSTR)) +#define ttistable(o) checktag((o), ctb(LUA_TTABLE)) +#define ttisfunction(o) checktype(o, LUA_TFUNCTION) +#define ttisclosure(o) ((rttype(o) & 0x1F) == LUA_TFUNCTION) +#define ttisCclosure(o) checktag((o), ctb(LUA_TCCL)) +#define ttisLclosure(o) checktag((o), ctb(LUA_TLCL)) +#define ttislcf(o) checktag((o), LUA_TLCF) +#define ttisfulluserdata(o) checktag((o), ctb(LUA_TUSERDATA)) +#define ttisthread(o) checktag((o), ctb(LUA_TTHREAD)) +#define ttisdeadkey(o) checktag((o), LUA_TDEADKEY) + + +/* Macros to access values */ +#define ivalue(o) check_exp(ttisinteger(o), val_(o).i) +#define fltvalue(o) check_exp(ttisfloat(o), val_(o).n) +#define nvalue(o) check_exp(ttisnumber(o), \ + (ttisinteger(o) ? cast_num(ivalue(o)) : fltvalue(o))) +#define gcvalue(o) check_exp(iscollectable(o), val_(o).gc) +#define pvalue(o) check_exp(ttislightuserdata(o), val_(o).p) +#define tsvalue(o) check_exp(ttisstring(o), gco2ts(val_(o).gc)) +#define uvalue(o) check_exp(ttisfulluserdata(o), gco2u(val_(o).gc)) +#define clvalue(o) check_exp(ttisclosure(o), gco2cl(val_(o).gc)) +#define clLvalue(o) check_exp(ttisLclosure(o), gco2lcl(val_(o).gc)) +#define clCvalue(o) check_exp(ttisCclosure(o), gco2ccl(val_(o).gc)) +#define fvalue(o) check_exp(ttislcf(o), val_(o).f) +#define hvalue(o) check_exp(ttistable(o), gco2t(val_(o).gc)) +#define bvalue(o) check_exp(ttisboolean(o), val_(o).b) +#define thvalue(o) check_exp(ttisthread(o), gco2th(val_(o).gc)) +/* a dead value may get the 'gc' field, but cannot access its contents */ +#define deadvalue(o) check_exp(ttisdeadkey(o), cast(void *, val_(o).gc)) + +#define l_isfalse(o) (ttisnil(o) || (ttisboolean(o) && bvalue(o) == 0)) + + +#define iscollectable(o) (rttype(o) & BIT_ISCOLLECTABLE) + + +/* Macros for internal tests */ +#define righttt(obj) (ttype(obj) == gcvalue(obj)->tt) + +#define checkliveness(L,obj) \ + lua_longassert(!iscollectable(obj) || \ + (righttt(obj) && (L == NULL || !isdead(G(L),gcvalue(obj))))) + + +/* Macros to set values */ +#define settt_(o,t) ((o)->tt_=(t)) + +#define setfltvalue(obj,x) \ + { TValue *io=(obj); val_(io).n=(x); settt_(io, LUA_TNUMFLT); } + +#define chgfltvalue(obj,x) \ + { TValue *io=(obj); lua_assert(ttisfloat(io)); val_(io).n=(x); } + +#define setivalue(obj,x) \ + { TValue *io=(obj); val_(io).i=(x); settt_(io, LUA_TNUMINT); } + +#define chgivalue(obj,x) \ + { TValue *io=(obj); lua_assert(ttisinteger(io)); val_(io).i=(x); } + +#define setnilvalue(obj) settt_(obj, LUA_TNIL) + +#define setfvalue(obj,x) \ + { TValue *io=(obj); val_(io).f=(x); settt_(io, LUA_TLCF); } + +#define setpvalue(obj,x) \ + { TValue *io=(obj); val_(io).p=(x); settt_(io, LUA_TLIGHTUSERDATA); } + +#define setbvalue(obj,x) \ + { TValue *io=(obj); val_(io).b=(x); settt_(io, LUA_TBOOLEAN); } + +#define setgcovalue(L,obj,x) \ + { TValue *io = (obj); GCObject *i_g=(x); \ + val_(io).gc = i_g; settt_(io, ctb(i_g->tt)); } + +#define setsvalue(L,obj,x) \ + { TValue *io = (obj); TString *x_ = (x); \ + val_(io).gc = obj2gco(x_); settt_(io, ctb(x_->tt)); \ + checkliveness(L,io); } + +#define setuvalue(L,obj,x) \ + { TValue *io = (obj); Udata *x_ = (x); \ + val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TUSERDATA)); \ + checkliveness(L,io); } + +#define setthvalue(L,obj,x) \ + { TValue *io = (obj); lua_State *x_ = (x); \ + val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TTHREAD)); \ + checkliveness(L,io); } + +#define setclLvalue(L,obj,x) \ + { TValue *io = (obj); LClosure *x_ = (x); \ + val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TLCL)); \ + checkliveness(L,io); } + +#define setclCvalue(L,obj,x) \ + { TValue *io = (obj); CClosure *x_ = (x); \ + val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TCCL)); \ + checkliveness(L,io); } + +#define sethvalue(L,obj,x) \ + { TValue *io = (obj); Table *x_ = (x); \ + val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TTABLE)); \ + checkliveness(L,io); } + +#define setdeadvalue(obj) settt_(obj, LUA_TDEADKEY) + + + +#define setobj(L,obj1,obj2) \ + { TValue *io1=(obj1); *io1 = *(obj2); \ + (void)L; checkliveness(L,io1); } + + +/* +** different types of assignments, according to destination +*/ + +/* from stack to (same) stack */ +#define setobjs2s setobj +/* to stack (not from same stack) */ +#define setobj2s setobj +#define setsvalue2s setsvalue +#define sethvalue2s sethvalue +#define setptvalue2s setptvalue +/* from table to same table */ +#define setobjt2t setobj +/* to new object */ +#define setobj2n setobj +#define setsvalue2n setsvalue + +/* to table (define it as an expression to be used in macros) */ +#define setobj2t(L,o1,o2) ((void)L, *(o1)=*(o2), checkliveness(L,(o1))) + + + + +/* +** {====================================================== +** types and prototypes +** ======================================================= +*/ + + +typedef TValue *StkId; /* index to stack elements */ + + + + +/* +** Header for string value; string bytes follow the end of this structure +** (aligned according to 'UTString'; see next). +*/ +typedef struct TString { + CommonHeader; + lu_byte extra; /* reserved words for short strings; "has hash" for longs */ + lu_byte shrlen; /* length for short strings */ + unsigned int hash; + union { + size_t lnglen; /* length for long strings */ + struct TString *hnext; /* linked list for hash table */ + } u; +} TString; + + +/* +** Ensures that address after this type is always fully aligned. +*/ +typedef union UTString { + L_Umaxalign dummy; /* ensures maximum alignment for strings */ + TString tsv; +} UTString; + + +/* +** Get the actual string (array of bytes) from a 'TString'. +** (Access to 'extra' ensures that value is really a 'TString'.) +*/ +#define getstr(ts) \ + check_exp(sizeof((ts)->extra), cast(char *, (ts)) + sizeof(UTString)) + + +/* get the actual string (array of bytes) from a Lua value */ +#define svalue(o) getstr(tsvalue(o)) + +/* get string length from 'TString *s' */ +#define tsslen(s) ((s)->tt == LUA_TSHRSTR ? (s)->shrlen : (s)->u.lnglen) + +/* get string length from 'TValue *o' */ +#define vslen(o) tsslen(tsvalue(o)) + + +/* +** Header for userdata; memory area follows the end of this structure +** (aligned according to 'UUdata'; see next). +*/ +typedef struct Udata { + CommonHeader; + lu_byte ttuv_; /* user value's tag */ + struct Table *metatable; + size_t len; /* number of bytes */ + union Value user_; /* user value */ +} Udata; + + +/* +** Ensures that address after this type is always fully aligned. +*/ +typedef union UUdata { + L_Umaxalign dummy; /* ensures maximum alignment for 'local' udata */ + Udata uv; +} UUdata; + + +/* +** Get the address of memory block inside 'Udata'. +** (Access to 'ttuv_' ensures that value is really a 'Udata'.) +*/ +#define getudatamem(u) \ + check_exp(sizeof((u)->ttuv_), (cast(char*, (u)) + sizeof(UUdata))) + +#define setuservalue(L,u,o) \ + { const TValue *io=(o); Udata *iu = (u); \ + iu->user_ = io->value_; iu->ttuv_ = rttype(io); \ + checkliveness(L,io); } + + +#define getuservalue(L,u,o) \ + { TValue *io=(o); const Udata *iu = (u); \ + io->value_ = iu->user_; settt_(io, iu->ttuv_); \ + checkliveness(L,io); } + + +/* +** Description of an upvalue for function prototypes +*/ +typedef struct Upvaldesc { + TString *name; /* upvalue name (for debug information) */ + lu_byte instack; /* whether it is in stack (register) */ + lu_byte idx; /* index of upvalue (in stack or in outer function's list) */ +} Upvaldesc; + + +/* +** Description of a local variable for function prototypes +** (used for debug information) +*/ +typedef struct LocVar { + TString *varname; + int startpc; /* first point where variable is active */ + int endpc; /* first point where variable is dead */ +} LocVar; + + +/* +** Function Prototypes +*/ +typedef struct Proto { + CommonHeader; + lu_byte numparams; /* number of fixed parameters */ + lu_byte is_vararg; + lu_byte maxstacksize; /* number of registers needed by this function */ + int sizeupvalues; /* size of 'upvalues' */ + int sizek; /* size of 'k' */ + int sizecode; + int sizelineinfo; + int sizep; /* size of 'p' */ + int sizelocvars; + int linedefined; /* debug information */ + int lastlinedefined; /* debug information */ + TValue *k; /* constants used by the function */ + Instruction *code; /* opcodes */ + struct Proto **p; /* functions defined inside the function */ + int *lineinfo; /* map from opcodes to source lines (debug information) */ + LocVar *locvars; /* information about local variables (debug information) */ + Upvaldesc *upvalues; /* upvalue information */ + struct LClosure *cache; /* last-created closure with this prototype */ + TString *source; /* used for debug information */ + GCObject *gclist; +} Proto; + + + +/* +** Lua Upvalues +*/ +typedef struct UpVal UpVal; + + +/* +** Closures +*/ + +#define ClosureHeader \ + CommonHeader; lu_byte nupvalues; GCObject *gclist + +typedef struct CClosure { + ClosureHeader; + lua_CFunction f; + TValue upvalue[1]; /* list of upvalues */ +} CClosure; + + +typedef struct LClosure { + ClosureHeader; + struct Proto *p; + UpVal *upvals[1]; /* list of upvalues */ +} LClosure; + + +typedef union Closure { + CClosure c; + LClosure l; +} Closure; + + +#define isLfunction(o) ttisLclosure(o) + +#define getproto(o) (clLvalue(o)->p) + + +/* +** Tables +*/ + +typedef union TKey { + struct { + TValuefields; + int next; /* for chaining (offset for next node) */ + } nk; + TValue tvk; +} TKey; + + +/* copy a value into a key without messing up field 'next' */ +#define setnodekey(L,key,obj) \ + { TKey *k_=(key); const TValue *io_=(obj); \ + k_->nk.value_ = io_->value_; k_->nk.tt_ = io_->tt_; \ + (void)L; checkliveness(L,io_); } + + +typedef struct Node { + TValue i_val; + TKey i_key; +} Node; + + +typedef struct Table { + CommonHeader; + lu_byte flags; /* 1<

lsizenode)) + + +/* +** (address of) a fixed nil value +*/ +#define luaO_nilobject (&luaO_nilobject_) + + +LUAI_DDEC const TValue luaO_nilobject_; + +/* size of buffer for 'luaO_utf8esc' function */ +#define UTF8BUFFSZ 8 + +LUAI_FUNC int luaO_int2fb (unsigned int x); +LUAI_FUNC int luaO_fb2int (int x); +LUAI_FUNC int luaO_utf8esc (char *buff, unsigned long x); +LUAI_FUNC int luaO_ceillog2 (unsigned int x); +LUAI_FUNC void luaO_arith (lua_State *L, int op, const TValue *p1, + const TValue *p2, TValue *res); +LUAI_FUNC size_t luaO_str2num (const char *s, TValue *o); +LUAI_FUNC int luaO_hexavalue (int c); +LUAI_FUNC void luaO_tostring (lua_State *L, StkId obj); +LUAI_FUNC const char *luaO_pushvfstring (lua_State *L, const char *fmt, + va_list argp); +LUAI_FUNC const char *luaO_pushfstring (lua_State *L, const char *fmt, ...); +LUAI_FUNC void luaO_chunkid (char *out, const char *source, size_t len); + + +#endif + diff --git a/deps/rcheevos/test/lua/src/lopcodes.c b/deps/rcheevos/test/lua/src/lopcodes.c new file mode 100644 index 0000000000..a1cbef8573 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lopcodes.c @@ -0,0 +1,124 @@ +/* +** $Id: lopcodes.c,v 1.55 2015/01/05 13:48:33 roberto Exp $ +** Opcodes for Lua virtual machine +** See Copyright Notice in lua.h +*/ + +#define lopcodes_c +#define LUA_CORE + +#include "lprefix.h" + + +#include + +#include "lopcodes.h" + + +/* ORDER OP */ + +LUAI_DDEF const char *const luaP_opnames[NUM_OPCODES+1] = { + "MOVE", + "LOADK", + "LOADKX", + "LOADBOOL", + "LOADNIL", + "GETUPVAL", + "GETTABUP", + "GETTABLE", + "SETTABUP", + "SETUPVAL", + "SETTABLE", + "NEWTABLE", + "SELF", + "ADD", + "SUB", + "MUL", + "MOD", + "POW", + "DIV", + "IDIV", + "BAND", + "BOR", + "BXOR", + "SHL", + "SHR", + "UNM", + "BNOT", + "NOT", + "LEN", + "CONCAT", + "JMP", + "EQ", + "LT", + "LE", + "TEST", + "TESTSET", + "CALL", + "TAILCALL", + "RETURN", + "FORLOOP", + "FORPREP", + "TFORCALL", + "TFORLOOP", + "SETLIST", + "CLOSURE", + "VARARG", + "EXTRAARG", + NULL +}; + + +#define opmode(t,a,b,c,m) (((t)<<7) | ((a)<<6) | ((b)<<4) | ((c)<<2) | (m)) + +LUAI_DDEF const lu_byte luaP_opmodes[NUM_OPCODES] = { +/* T A B C mode opcode */ + opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_MOVE */ + ,opmode(0, 1, OpArgK, OpArgN, iABx) /* OP_LOADK */ + ,opmode(0, 1, OpArgN, OpArgN, iABx) /* OP_LOADKX */ + ,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_LOADBOOL */ + ,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_LOADNIL */ + ,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_GETUPVAL */ + ,opmode(0, 1, OpArgU, OpArgK, iABC) /* OP_GETTABUP */ + ,opmode(0, 1, OpArgR, OpArgK, iABC) /* OP_GETTABLE */ + ,opmode(0, 0, OpArgK, OpArgK, iABC) /* OP_SETTABUP */ + ,opmode(0, 0, OpArgU, OpArgN, iABC) /* OP_SETUPVAL */ + ,opmode(0, 0, OpArgK, OpArgK, iABC) /* OP_SETTABLE */ + ,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_NEWTABLE */ + ,opmode(0, 1, OpArgR, OpArgK, iABC) /* OP_SELF */ + ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_ADD */ + ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_SUB */ + ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_MUL */ + ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_MOD */ + ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_POW */ + ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_DIV */ + ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_IDIV */ + ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_BAND */ + ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_BOR */ + ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_BXOR */ + ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_SHL */ + ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_SHR */ + ,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_UNM */ + ,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_BNOT */ + ,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_NOT */ + ,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_LEN */ + ,opmode(0, 1, OpArgR, OpArgR, iABC) /* OP_CONCAT */ + ,opmode(0, 0, OpArgR, OpArgN, iAsBx) /* OP_JMP */ + ,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_EQ */ + ,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_LT */ + ,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_LE */ + ,opmode(1, 0, OpArgN, OpArgU, iABC) /* OP_TEST */ + ,opmode(1, 1, OpArgR, OpArgU, iABC) /* OP_TESTSET */ + ,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_CALL */ + ,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_TAILCALL */ + ,opmode(0, 0, OpArgU, OpArgN, iABC) /* OP_RETURN */ + ,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_FORLOOP */ + ,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_FORPREP */ + ,opmode(0, 0, OpArgN, OpArgU, iABC) /* OP_TFORCALL */ + ,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_TFORLOOP */ + ,opmode(0, 0, OpArgU, OpArgU, iABC) /* OP_SETLIST */ + ,opmode(0, 1, OpArgU, OpArgN, iABx) /* OP_CLOSURE */ + ,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_VARARG */ + ,opmode(0, 0, OpArgU, OpArgU, iAx) /* OP_EXTRAARG */ +}; + diff --git a/deps/rcheevos/test/lua/src/lopcodes.h b/deps/rcheevos/test/lua/src/lopcodes.h new file mode 100644 index 0000000000..bbc4b61968 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lopcodes.h @@ -0,0 +1,297 @@ +/* +** $Id: lopcodes.h,v 1.149 2016/07/19 17:12:21 roberto Exp $ +** Opcodes for Lua virtual machine +** See Copyright Notice in lua.h +*/ + +#ifndef lopcodes_h +#define lopcodes_h + +#include "llimits.h" + + +/*=========================================================================== + We assume that instructions are unsigned numbers. + All instructions have an opcode in the first 6 bits. + Instructions can have the following fields: + 'A' : 8 bits + 'B' : 9 bits + 'C' : 9 bits + 'Ax' : 26 bits ('A', 'B', and 'C' together) + 'Bx' : 18 bits ('B' and 'C' together) + 'sBx' : signed Bx + + A signed argument is represented in excess K; that is, the number + value is the unsigned value minus K. K is exactly the maximum value + for that argument (so that -max is represented by 0, and +max is + represented by 2*max), which is half the maximum for the corresponding + unsigned argument. +===========================================================================*/ + + +enum OpMode {iABC, iABx, iAsBx, iAx}; /* basic instruction format */ + + +/* +** size and position of opcode arguments. +*/ +#define SIZE_C 9 +#define SIZE_B 9 +#define SIZE_Bx (SIZE_C + SIZE_B) +#define SIZE_A 8 +#define SIZE_Ax (SIZE_C + SIZE_B + SIZE_A) + +#define SIZE_OP 6 + +#define POS_OP 0 +#define POS_A (POS_OP + SIZE_OP) +#define POS_C (POS_A + SIZE_A) +#define POS_B (POS_C + SIZE_C) +#define POS_Bx POS_C +#define POS_Ax POS_A + + +/* +** limits for opcode arguments. +** we use (signed) int to manipulate most arguments, +** so they must fit in LUAI_BITSINT-1 bits (-1 for sign) +*/ +#if SIZE_Bx < LUAI_BITSINT-1 +#define MAXARG_Bx ((1<>1) /* 'sBx' is signed */ +#else +#define MAXARG_Bx MAX_INT +#define MAXARG_sBx MAX_INT +#endif + +#if SIZE_Ax < LUAI_BITSINT-1 +#define MAXARG_Ax ((1<>POS_OP) & MASK1(SIZE_OP,0))) +#define SET_OPCODE(i,o) ((i) = (((i)&MASK0(SIZE_OP,POS_OP)) | \ + ((cast(Instruction, o)<>pos) & MASK1(size,0))) +#define setarg(i,v,pos,size) ((i) = (((i)&MASK0(size,pos)) | \ + ((cast(Instruction, v)<> RK(C) */ +OP_UNM,/* A B R(A) := -R(B) */ +OP_BNOT,/* A B R(A) := ~R(B) */ +OP_NOT,/* A B R(A) := not R(B) */ +OP_LEN,/* A B R(A) := length of R(B) */ + +OP_CONCAT,/* A B C R(A) := R(B).. ... ..R(C) */ + +OP_JMP,/* A sBx pc+=sBx; if (A) close all upvalues >= R(A - 1) */ +OP_EQ,/* A B C if ((RK(B) == RK(C)) ~= A) then pc++ */ +OP_LT,/* A B C if ((RK(B) < RK(C)) ~= A) then pc++ */ +OP_LE,/* A B C if ((RK(B) <= RK(C)) ~= A) then pc++ */ + +OP_TEST,/* A C if not (R(A) <=> C) then pc++ */ +OP_TESTSET,/* A B C if (R(B) <=> C) then R(A) := R(B) else pc++ */ + +OP_CALL,/* A B C R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */ +OP_TAILCALL,/* A B C return R(A)(R(A+1), ... ,R(A+B-1)) */ +OP_RETURN,/* A B return R(A), ... ,R(A+B-2) (see note) */ + +OP_FORLOOP,/* A sBx R(A)+=R(A+2); + if R(A) > 4) & 3)) +#define getCMode(m) (cast(enum OpArgMask, (luaP_opmodes[m] >> 2) & 3)) +#define testAMode(m) (luaP_opmodes[m] & (1 << 6)) +#define testTMode(m) (luaP_opmodes[m] & (1 << 7)) + + +LUAI_DDEC const char *const luaP_opnames[NUM_OPCODES+1]; /* opcode names */ + + +/* number of list items to accumulate before a SETLIST instruction */ +#define LFIELDS_PER_FLUSH 50 + + +#endif diff --git a/deps/rcheevos/test/lua/src/loslib.c b/deps/rcheevos/test/lua/src/loslib.c new file mode 100644 index 0000000000..5a94eb9068 --- /dev/null +++ b/deps/rcheevos/test/lua/src/loslib.c @@ -0,0 +1,407 @@ +/* +** $Id: loslib.c,v 1.65 2016/07/18 17:58:58 roberto Exp $ +** Standard Operating System library +** See Copyright Notice in lua.h +*/ + +#define loslib_c +#define LUA_LIB + +#include "lprefix.h" + + +#include +#include +#include +#include +#include + +#include "lua.h" + +#include "lauxlib.h" +#include "lualib.h" + + +/* +** {================================================================== +** List of valid conversion specifiers for the 'strftime' function; +** options are grouped by length; group of length 2 start with '||'. +** =================================================================== +*/ +#if !defined(LUA_STRFTIMEOPTIONS) /* { */ + +/* options for ANSI C 89 (only 1-char options) */ +#define L_STRFTIMEC89 "aAbBcdHIjmMpSUwWxXyYZ%" + +/* options for ISO C 99 and POSIX */ +#define L_STRFTIMEC99 "aAbBcCdDeFgGhHIjmMnprRStTuUVwWxXyYzZ%" \ + "||" "EcECExEXEyEY" "OdOeOHOIOmOMOSOuOUOVOwOWOy" /* two-char options */ + +/* options for Windows */ +#define L_STRFTIMEWIN "aAbBcdHIjmMpSUwWxXyYzZ%" \ + "||" "#c#x#d#H#I#j#m#M#S#U#w#W#y#Y" /* two-char options */ + +#if defined(LUA_USE_WINDOWS) +#define LUA_STRFTIMEOPTIONS L_STRFTIMEWIN +#elif defined(LUA_USE_C89) +#define LUA_STRFTIMEOPTIONS L_STRFTIMEC89 +#else /* C99 specification */ +#define LUA_STRFTIMEOPTIONS L_STRFTIMEC99 +#endif + +#endif /* } */ +/* }================================================================== */ + + +/* +** {================================================================== +** Configuration for time-related stuff +** =================================================================== +*/ + +#if !defined(l_time_t) /* { */ +/* +** type to represent time_t in Lua +*/ +#define l_timet lua_Integer +#define l_pushtime(L,t) lua_pushinteger(L,(lua_Integer)(t)) + +static time_t l_checktime (lua_State *L, int arg) { + lua_Integer t = luaL_checkinteger(L, arg); + luaL_argcheck(L, (time_t)t == t, arg, "time out-of-bounds"); + return (time_t)t; +} + +#endif /* } */ + + +#if !defined(l_gmtime) /* { */ +/* +** By default, Lua uses gmtime/localtime, except when POSIX is available, +** where it uses gmtime_r/localtime_r +*/ + +#if defined(LUA_USE_POSIX) /* { */ + +#define l_gmtime(t,r) gmtime_r(t,r) +#define l_localtime(t,r) localtime_r(t,r) + +#else /* }{ */ + +/* ISO C definitions */ +#define l_gmtime(t,r) ((void)(r)->tm_sec, gmtime(t)) +#define l_localtime(t,r) ((void)(r)->tm_sec, localtime(t)) + +#endif /* } */ + +#endif /* } */ + +/* }================================================================== */ + + +/* +** {================================================================== +** Configuration for 'tmpnam': +** By default, Lua uses tmpnam except when POSIX is available, where +** it uses mkstemp. +** =================================================================== +*/ +#if !defined(lua_tmpnam) /* { */ + +#if defined(LUA_USE_POSIX) /* { */ + +#include + +#define LUA_TMPNAMBUFSIZE 32 + +#if !defined(LUA_TMPNAMTEMPLATE) +#define LUA_TMPNAMTEMPLATE "/tmp/lua_XXXXXX" +#endif + +#define lua_tmpnam(b,e) { \ + strcpy(b, LUA_TMPNAMTEMPLATE); \ + e = mkstemp(b); \ + if (e != -1) close(e); \ + e = (e == -1); } + +#else /* }{ */ + +/* ISO C definitions */ +#define LUA_TMPNAMBUFSIZE L_tmpnam +#define lua_tmpnam(b,e) { e = (tmpnam(b) == NULL); } + +#endif /* } */ + +#endif /* } */ +/* }================================================================== */ + + + + +static int os_execute (lua_State *L) { + const char *cmd = luaL_optstring(L, 1, NULL); + int stat = system(cmd); + if (cmd != NULL) + return luaL_execresult(L, stat); + else { + lua_pushboolean(L, stat); /* true if there is a shell */ + return 1; + } +} + + +static int os_remove (lua_State *L) { + const char *filename = luaL_checkstring(L, 1); + return luaL_fileresult(L, remove(filename) == 0, filename); +} + + +static int os_rename (lua_State *L) { + const char *fromname = luaL_checkstring(L, 1); + const char *toname = luaL_checkstring(L, 2); + return luaL_fileresult(L, rename(fromname, toname) == 0, NULL); +} + + +static int os_tmpname (lua_State *L) { + char buff[LUA_TMPNAMBUFSIZE]; + int err; + lua_tmpnam(buff, err); + if (err) + return luaL_error(L, "unable to generate a unique filename"); + lua_pushstring(L, buff); + return 1; +} + + +static int os_getenv (lua_State *L) { + lua_pushstring(L, getenv(luaL_checkstring(L, 1))); /* if NULL push nil */ + return 1; +} + + +static int os_clock (lua_State *L) { + lua_pushnumber(L, ((lua_Number)clock())/(lua_Number)CLOCKS_PER_SEC); + return 1; +} + + +/* +** {====================================================== +** Time/Date operations +** { year=%Y, month=%m, day=%d, hour=%H, min=%M, sec=%S, +** wday=%w+1, yday=%j, isdst=? } +** ======================================================= +*/ + +static void setfield (lua_State *L, const char *key, int value) { + lua_pushinteger(L, value); + lua_setfield(L, -2, key); +} + +static void setboolfield (lua_State *L, const char *key, int value) { + if (value < 0) /* undefined? */ + return; /* does not set field */ + lua_pushboolean(L, value); + lua_setfield(L, -2, key); +} + + +/* +** Set all fields from structure 'tm' in the table on top of the stack +*/ +static void setallfields (lua_State *L, struct tm *stm) { + setfield(L, "sec", stm->tm_sec); + setfield(L, "min", stm->tm_min); + setfield(L, "hour", stm->tm_hour); + setfield(L, "day", stm->tm_mday); + setfield(L, "month", stm->tm_mon + 1); + setfield(L, "year", stm->tm_year + 1900); + setfield(L, "wday", stm->tm_wday + 1); + setfield(L, "yday", stm->tm_yday + 1); + setboolfield(L, "isdst", stm->tm_isdst); +} + + +static int getboolfield (lua_State *L, const char *key) { + int res; + res = (lua_getfield(L, -1, key) == LUA_TNIL) ? -1 : lua_toboolean(L, -1); + lua_pop(L, 1); + return res; +} + + +/* maximum value for date fields (to avoid arithmetic overflows with 'int') */ +#if !defined(L_MAXDATEFIELD) +#define L_MAXDATEFIELD (INT_MAX / 2) +#endif + +static int getfield (lua_State *L, const char *key, int d, int delta) { + int isnum; + int t = lua_getfield(L, -1, key); /* get field and its type */ + lua_Integer res = lua_tointegerx(L, -1, &isnum); + if (!isnum) { /* field is not an integer? */ + if (t != LUA_TNIL) /* some other value? */ + return luaL_error(L, "field '%s' is not an integer", key); + else if (d < 0) /* absent field; no default? */ + return luaL_error(L, "field '%s' missing in date table", key); + res = d; + } + else { + if (!(-L_MAXDATEFIELD <= res && res <= L_MAXDATEFIELD)) + return luaL_error(L, "field '%s' is out-of-bound", key); + res -= delta; + } + lua_pop(L, 1); + return (int)res; +} + + +static const char *checkoption (lua_State *L, const char *conv, + ptrdiff_t convlen, char *buff) { + const char *option = LUA_STRFTIMEOPTIONS; + int oplen = 1; /* length of options being checked */ + for (; *option != '\0' && oplen <= convlen; option += oplen) { + if (*option == '|') /* next block? */ + oplen++; /* will check options with next length (+1) */ + else if (memcmp(conv, option, oplen) == 0) { /* match? */ + memcpy(buff, conv, oplen); /* copy valid option to buffer */ + buff[oplen] = '\0'; + return conv + oplen; /* return next item */ + } + } + luaL_argerror(L, 1, + lua_pushfstring(L, "invalid conversion specifier '%%%s'", conv)); + return conv; /* to avoid warnings */ +} + + +/* maximum size for an individual 'strftime' item */ +#define SIZETIMEFMT 250 + + +static int os_date (lua_State *L) { + size_t slen; + const char *s = luaL_optlstring(L, 1, "%c", &slen); + time_t t = luaL_opt(L, l_checktime, 2, time(NULL)); + const char *se = s + slen; /* 's' end */ + struct tm tmr, *stm; + if (*s == '!') { /* UTC? */ + stm = l_gmtime(&t, &tmr); + s++; /* skip '!' */ + } + else + stm = l_localtime(&t, &tmr); + if (stm == NULL) /* invalid date? */ + luaL_error(L, "time result cannot be represented in this installation"); + if (strcmp(s, "*t") == 0) { + lua_createtable(L, 0, 9); /* 9 = number of fields */ + setallfields(L, stm); + } + else { + char cc[4]; /* buffer for individual conversion specifiers */ + luaL_Buffer b; + cc[0] = '%'; + luaL_buffinit(L, &b); + while (s < se) { + if (*s != '%') /* not a conversion specifier? */ + luaL_addchar(&b, *s++); + else { + size_t reslen; + char *buff = luaL_prepbuffsize(&b, SIZETIMEFMT); + s++; /* skip '%' */ + s = checkoption(L, s, se - s, cc + 1); /* copy specifier to 'cc' */ + reslen = strftime(buff, SIZETIMEFMT, cc, stm); + luaL_addsize(&b, reslen); + } + } + luaL_pushresult(&b); + } + return 1; +} + + +static int os_time (lua_State *L) { + time_t t; + if (lua_isnoneornil(L, 1)) /* called without args? */ + t = time(NULL); /* get current time */ + else { + struct tm ts; + luaL_checktype(L, 1, LUA_TTABLE); + lua_settop(L, 1); /* make sure table is at the top */ + ts.tm_sec = getfield(L, "sec", 0, 0); + ts.tm_min = getfield(L, "min", 0, 0); + ts.tm_hour = getfield(L, "hour", 12, 0); + ts.tm_mday = getfield(L, "day", -1, 0); + ts.tm_mon = getfield(L, "month", -1, 1); + ts.tm_year = getfield(L, "year", -1, 1900); + ts.tm_isdst = getboolfield(L, "isdst"); + t = mktime(&ts); + setallfields(L, &ts); /* update fields with normalized values */ + } + if (t != (time_t)(l_timet)t || t == (time_t)(-1)) + luaL_error(L, "time result cannot be represented in this installation"); + l_pushtime(L, t); + return 1; +} + + +static int os_difftime (lua_State *L) { + time_t t1 = l_checktime(L, 1); + time_t t2 = l_checktime(L, 2); + lua_pushnumber(L, (lua_Number)difftime(t1, t2)); + return 1; +} + +/* }====================================================== */ + + +static int os_setlocale (lua_State *L) { + static const int cat[] = {LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY, + LC_NUMERIC, LC_TIME}; + static const char *const catnames[] = {"all", "collate", "ctype", "monetary", + "numeric", "time", NULL}; + const char *l = luaL_optstring(L, 1, NULL); + int op = luaL_checkoption(L, 2, "all", catnames); + lua_pushstring(L, setlocale(cat[op], l)); + return 1; +} + + +static int os_exit (lua_State *L) { + int status; + if (lua_isboolean(L, 1)) + status = (lua_toboolean(L, 1) ? EXIT_SUCCESS : EXIT_FAILURE); + else + status = (int)luaL_optinteger(L, 1, EXIT_SUCCESS); + if (lua_toboolean(L, 2)) + lua_close(L); + if (L) exit(status); /* 'if' to avoid warnings for unreachable 'return' */ + return 0; +} + + +static const luaL_Reg syslib[] = { + {"clock", os_clock}, + {"date", os_date}, + {"difftime", os_difftime}, + {"execute", os_execute}, + {"exit", os_exit}, + {"getenv", os_getenv}, + {"remove", os_remove}, + {"rename", os_rename}, + {"setlocale", os_setlocale}, + {"time", os_time}, + {"tmpname", os_tmpname}, + {NULL, NULL} +}; + +/* }====================================================== */ + + + +LUAMOD_API int luaopen_os (lua_State *L) { + luaL_newlib(L, syslib); + return 1; +} + diff --git a/deps/rcheevos/test/lua/src/lparser.c b/deps/rcheevos/test/lua/src/lparser.c new file mode 100644 index 0000000000..cd4512d4d4 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lparser.c @@ -0,0 +1,1650 @@ +/* +** $Id: lparser.c,v 2.155 2016/08/01 19:51:24 roberto Exp $ +** Lua Parser +** See Copyright Notice in lua.h +*/ + +#define lparser_c +#define LUA_CORE + +#include "lprefix.h" + + +#include + +#include "lua.h" + +#include "lcode.h" +#include "ldebug.h" +#include "ldo.h" +#include "lfunc.h" +#include "llex.h" +#include "lmem.h" +#include "lobject.h" +#include "lopcodes.h" +#include "lparser.h" +#include "lstate.h" +#include "lstring.h" +#include "ltable.h" + + + +/* maximum number of local variables per function (must be smaller + than 250, due to the bytecode format) */ +#define MAXVARS 200 + + +#define hasmultret(k) ((k) == VCALL || (k) == VVARARG) + + +/* because all strings are unified by the scanner, the parser + can use pointer equality for string equality */ +#define eqstr(a,b) ((a) == (b)) + + +/* +** nodes for block list (list of active blocks) +*/ +typedef struct BlockCnt { + struct BlockCnt *previous; /* chain */ + int firstlabel; /* index of first label in this block */ + int firstgoto; /* index of first pending goto in this block */ + lu_byte nactvar; /* # active locals outside the block */ + lu_byte upval; /* true if some variable in the block is an upvalue */ + lu_byte isloop; /* true if 'block' is a loop */ +} BlockCnt; + + + +/* +** prototypes for recursive non-terminal functions +*/ +static void statement (LexState *ls); +static void expr (LexState *ls, expdesc *v); + + +/* semantic error */ +static l_noret semerror (LexState *ls, const char *msg) { + ls->t.token = 0; /* remove "near " from final message */ + luaX_syntaxerror(ls, msg); +} + + +static l_noret error_expected (LexState *ls, int token) { + luaX_syntaxerror(ls, + luaO_pushfstring(ls->L, "%s expected", luaX_token2str(ls, token))); +} + + +static l_noret errorlimit (FuncState *fs, int limit, const char *what) { + lua_State *L = fs->ls->L; + const char *msg; + int line = fs->f->linedefined; + const char *where = (line == 0) + ? "main function" + : luaO_pushfstring(L, "function at line %d", line); + msg = luaO_pushfstring(L, "too many %s (limit is %d) in %s", + what, limit, where); + luaX_syntaxerror(fs->ls, msg); +} + + +static void checklimit (FuncState *fs, int v, int l, const char *what) { + if (v > l) errorlimit(fs, l, what); +} + + +static int testnext (LexState *ls, int c) { + if (ls->t.token == c) { + luaX_next(ls); + return 1; + } + else return 0; +} + + +static void check (LexState *ls, int c) { + if (ls->t.token != c) + error_expected(ls, c); +} + + +static void checknext (LexState *ls, int c) { + check(ls, c); + luaX_next(ls); +} + + +#define check_condition(ls,c,msg) { if (!(c)) luaX_syntaxerror(ls, msg); } + + + +static void check_match (LexState *ls, int what, int who, int where) { + if (!testnext(ls, what)) { + if (where == ls->linenumber) + error_expected(ls, what); + else { + luaX_syntaxerror(ls, luaO_pushfstring(ls->L, + "%s expected (to close %s at line %d)", + luaX_token2str(ls, what), luaX_token2str(ls, who), where)); + } + } +} + + +static TString *str_checkname (LexState *ls) { + TString *ts; + check(ls, TK_NAME); + ts = ls->t.seminfo.ts; + luaX_next(ls); + return ts; +} + + +static void init_exp (expdesc *e, expkind k, int i) { + e->f = e->t = NO_JUMP; + e->k = k; + e->u.info = i; +} + + +static void codestring (LexState *ls, expdesc *e, TString *s) { + init_exp(e, VK, luaK_stringK(ls->fs, s)); +} + + +static void checkname (LexState *ls, expdesc *e) { + codestring(ls, e, str_checkname(ls)); +} + + +static int registerlocalvar (LexState *ls, TString *varname) { + FuncState *fs = ls->fs; + Proto *f = fs->f; + int oldsize = f->sizelocvars; + luaM_growvector(ls->L, f->locvars, fs->nlocvars, f->sizelocvars, + LocVar, SHRT_MAX, "local variables"); + while (oldsize < f->sizelocvars) + f->locvars[oldsize++].varname = NULL; + f->locvars[fs->nlocvars].varname = varname; + luaC_objbarrier(ls->L, f, varname); + return fs->nlocvars++; +} + + +static void new_localvar (LexState *ls, TString *name) { + FuncState *fs = ls->fs; + Dyndata *dyd = ls->dyd; + int reg = registerlocalvar(ls, name); + checklimit(fs, dyd->actvar.n + 1 - fs->firstlocal, + MAXVARS, "local variables"); + luaM_growvector(ls->L, dyd->actvar.arr, dyd->actvar.n + 1, + dyd->actvar.size, Vardesc, MAX_INT, "local variables"); + dyd->actvar.arr[dyd->actvar.n++].idx = cast(short, reg); +} + + +static void new_localvarliteral_ (LexState *ls, const char *name, size_t sz) { + new_localvar(ls, luaX_newstring(ls, name, sz)); +} + +#define new_localvarliteral(ls,v) \ + new_localvarliteral_(ls, "" v, (sizeof(v)/sizeof(char))-1) + + +static LocVar *getlocvar (FuncState *fs, int i) { + int idx = fs->ls->dyd->actvar.arr[fs->firstlocal + i].idx; + lua_assert(idx < fs->nlocvars); + return &fs->f->locvars[idx]; +} + + +static void adjustlocalvars (LexState *ls, int nvars) { + FuncState *fs = ls->fs; + fs->nactvar = cast_byte(fs->nactvar + nvars); + for (; nvars; nvars--) { + getlocvar(fs, fs->nactvar - nvars)->startpc = fs->pc; + } +} + + +static void removevars (FuncState *fs, int tolevel) { + fs->ls->dyd->actvar.n -= (fs->nactvar - tolevel); + while (fs->nactvar > tolevel) + getlocvar(fs, --fs->nactvar)->endpc = fs->pc; +} + + +static int searchupvalue (FuncState *fs, TString *name) { + int i; + Upvaldesc *up = fs->f->upvalues; + for (i = 0; i < fs->nups; i++) { + if (eqstr(up[i].name, name)) return i; + } + return -1; /* not found */ +} + + +static int newupvalue (FuncState *fs, TString *name, expdesc *v) { + Proto *f = fs->f; + int oldsize = f->sizeupvalues; + checklimit(fs, fs->nups + 1, MAXUPVAL, "upvalues"); + luaM_growvector(fs->ls->L, f->upvalues, fs->nups, f->sizeupvalues, + Upvaldesc, MAXUPVAL, "upvalues"); + while (oldsize < f->sizeupvalues) + f->upvalues[oldsize++].name = NULL; + f->upvalues[fs->nups].instack = (v->k == VLOCAL); + f->upvalues[fs->nups].idx = cast_byte(v->u.info); + f->upvalues[fs->nups].name = name; + luaC_objbarrier(fs->ls->L, f, name); + return fs->nups++; +} + + +static int searchvar (FuncState *fs, TString *n) { + int i; + for (i = cast_int(fs->nactvar) - 1; i >= 0; i--) { + if (eqstr(n, getlocvar(fs, i)->varname)) + return i; + } + return -1; /* not found */ +} + + +/* + Mark block where variable at given level was defined + (to emit close instructions later). +*/ +static void markupval (FuncState *fs, int level) { + BlockCnt *bl = fs->bl; + while (bl->nactvar > level) + bl = bl->previous; + bl->upval = 1; +} + + +/* + Find variable with given name 'n'. If it is an upvalue, add this + upvalue into all intermediate functions. +*/ +static void singlevaraux (FuncState *fs, TString *n, expdesc *var, int base) { + if (fs == NULL) /* no more levels? */ + init_exp(var, VVOID, 0); /* default is global */ + else { + int v = searchvar(fs, n); /* look up locals at current level */ + if (v >= 0) { /* found? */ + init_exp(var, VLOCAL, v); /* variable is local */ + if (!base) + markupval(fs, v); /* local will be used as an upval */ + } + else { /* not found as local at current level; try upvalues */ + int idx = searchupvalue(fs, n); /* try existing upvalues */ + if (idx < 0) { /* not found? */ + singlevaraux(fs->prev, n, var, 0); /* try upper levels */ + if (var->k == VVOID) /* not found? */ + return; /* it is a global */ + /* else was LOCAL or UPVAL */ + idx = newupvalue(fs, n, var); /* will be a new upvalue */ + } + init_exp(var, VUPVAL, idx); /* new or old upvalue */ + } + } +} + + +static void singlevar (LexState *ls, expdesc *var) { + TString *varname = str_checkname(ls); + FuncState *fs = ls->fs; + singlevaraux(fs, varname, var, 1); + if (var->k == VVOID) { /* global name? */ + expdesc key; + singlevaraux(fs, ls->envn, var, 1); /* get environment variable */ + lua_assert(var->k != VVOID); /* this one must exist */ + codestring(ls, &key, varname); /* key is variable name */ + luaK_indexed(fs, var, &key); /* env[varname] */ + } +} + + +static void adjust_assign (LexState *ls, int nvars, int nexps, expdesc *e) { + FuncState *fs = ls->fs; + int extra = nvars - nexps; + if (hasmultret(e->k)) { + extra++; /* includes call itself */ + if (extra < 0) extra = 0; + luaK_setreturns(fs, e, extra); /* last exp. provides the difference */ + if (extra > 1) luaK_reserveregs(fs, extra-1); + } + else { + if (e->k != VVOID) luaK_exp2nextreg(fs, e); /* close last expression */ + if (extra > 0) { + int reg = fs->freereg; + luaK_reserveregs(fs, extra); + luaK_nil(fs, reg, extra); + } + } + if (nexps > nvars) + ls->fs->freereg -= nexps - nvars; /* remove extra values */ +} + + +static void enterlevel (LexState *ls) { + lua_State *L = ls->L; + ++L->nCcalls; + checklimit(ls->fs, L->nCcalls, LUAI_MAXCCALLS, "C levels"); +} + + +#define leavelevel(ls) ((ls)->L->nCcalls--) + + +static void closegoto (LexState *ls, int g, Labeldesc *label) { + int i; + FuncState *fs = ls->fs; + Labellist *gl = &ls->dyd->gt; + Labeldesc *gt = &gl->arr[g]; + lua_assert(eqstr(gt->name, label->name)); + if (gt->nactvar < label->nactvar) { + TString *vname = getlocvar(fs, gt->nactvar)->varname; + const char *msg = luaO_pushfstring(ls->L, + " at line %d jumps into the scope of local '%s'", + getstr(gt->name), gt->line, getstr(vname)); + semerror(ls, msg); + } + luaK_patchlist(fs, gt->pc, label->pc); + /* remove goto from pending list */ + for (i = g; i < gl->n - 1; i++) + gl->arr[i] = gl->arr[i + 1]; + gl->n--; +} + + +/* +** try to close a goto with existing labels; this solves backward jumps +*/ +static int findlabel (LexState *ls, int g) { + int i; + BlockCnt *bl = ls->fs->bl; + Dyndata *dyd = ls->dyd; + Labeldesc *gt = &dyd->gt.arr[g]; + /* check labels in current block for a match */ + for (i = bl->firstlabel; i < dyd->label.n; i++) { + Labeldesc *lb = &dyd->label.arr[i]; + if (eqstr(lb->name, gt->name)) { /* correct label? */ + if (gt->nactvar > lb->nactvar && + (bl->upval || dyd->label.n > bl->firstlabel)) + luaK_patchclose(ls->fs, gt->pc, lb->nactvar); + closegoto(ls, g, lb); /* close it */ + return 1; + } + } + return 0; /* label not found; cannot close goto */ +} + + +static int newlabelentry (LexState *ls, Labellist *l, TString *name, + int line, int pc) { + int n = l->n; + luaM_growvector(ls->L, l->arr, n, l->size, + Labeldesc, SHRT_MAX, "labels/gotos"); + l->arr[n].name = name; + l->arr[n].line = line; + l->arr[n].nactvar = ls->fs->nactvar; + l->arr[n].pc = pc; + l->n = n + 1; + return n; +} + + +/* +** check whether new label 'lb' matches any pending gotos in current +** block; solves forward jumps +*/ +static void findgotos (LexState *ls, Labeldesc *lb) { + Labellist *gl = &ls->dyd->gt; + int i = ls->fs->bl->firstgoto; + while (i < gl->n) { + if (eqstr(gl->arr[i].name, lb->name)) + closegoto(ls, i, lb); + else + i++; + } +} + + +/* +** export pending gotos to outer level, to check them against +** outer labels; if the block being exited has upvalues, and +** the goto exits the scope of any variable (which can be the +** upvalue), close those variables being exited. +*/ +static void movegotosout (FuncState *fs, BlockCnt *bl) { + int i = bl->firstgoto; + Labellist *gl = &fs->ls->dyd->gt; + /* correct pending gotos to current block and try to close it + with visible labels */ + while (i < gl->n) { + Labeldesc *gt = &gl->arr[i]; + if (gt->nactvar > bl->nactvar) { + if (bl->upval) + luaK_patchclose(fs, gt->pc, bl->nactvar); + gt->nactvar = bl->nactvar; + } + if (!findlabel(fs->ls, i)) + i++; /* move to next one */ + } +} + + +static void enterblock (FuncState *fs, BlockCnt *bl, lu_byte isloop) { + bl->isloop = isloop; + bl->nactvar = fs->nactvar; + bl->firstlabel = fs->ls->dyd->label.n; + bl->firstgoto = fs->ls->dyd->gt.n; + bl->upval = 0; + bl->previous = fs->bl; + fs->bl = bl; + lua_assert(fs->freereg == fs->nactvar); +} + + +/* +** create a label named 'break' to resolve break statements +*/ +static void breaklabel (LexState *ls) { + TString *n = luaS_new(ls->L, "break"); + int l = newlabelentry(ls, &ls->dyd->label, n, 0, ls->fs->pc); + findgotos(ls, &ls->dyd->label.arr[l]); +} + +/* +** generates an error for an undefined 'goto'; choose appropriate +** message when label name is a reserved word (which can only be 'break') +*/ +static l_noret undefgoto (LexState *ls, Labeldesc *gt) { + const char *msg = isreserved(gt->name) + ? "<%s> at line %d not inside a loop" + : "no visible label '%s' for at line %d"; + msg = luaO_pushfstring(ls->L, msg, getstr(gt->name), gt->line); + semerror(ls, msg); +} + + +static void leaveblock (FuncState *fs) { + BlockCnt *bl = fs->bl; + LexState *ls = fs->ls; + if (bl->previous && bl->upval) { + /* create a 'jump to here' to close upvalues */ + int j = luaK_jump(fs); + luaK_patchclose(fs, j, bl->nactvar); + luaK_patchtohere(fs, j); + } + if (bl->isloop) + breaklabel(ls); /* close pending breaks */ + fs->bl = bl->previous; + removevars(fs, bl->nactvar); + lua_assert(bl->nactvar == fs->nactvar); + fs->freereg = fs->nactvar; /* free registers */ + ls->dyd->label.n = bl->firstlabel; /* remove local labels */ + if (bl->previous) /* inner block? */ + movegotosout(fs, bl); /* update pending gotos to outer block */ + else if (bl->firstgoto < ls->dyd->gt.n) /* pending gotos in outer block? */ + undefgoto(ls, &ls->dyd->gt.arr[bl->firstgoto]); /* error */ +} + + +/* +** adds a new prototype into list of prototypes +*/ +static Proto *addprototype (LexState *ls) { + Proto *clp; + lua_State *L = ls->L; + FuncState *fs = ls->fs; + Proto *f = fs->f; /* prototype of current function */ + if (fs->np >= f->sizep) { + int oldsize = f->sizep; + luaM_growvector(L, f->p, fs->np, f->sizep, Proto *, MAXARG_Bx, "functions"); + while (oldsize < f->sizep) + f->p[oldsize++] = NULL; + } + f->p[fs->np++] = clp = luaF_newproto(L); + luaC_objbarrier(L, f, clp); + return clp; +} + + +/* +** codes instruction to create new closure in parent function. +** The OP_CLOSURE instruction must use the last available register, +** so that, if it invokes the GC, the GC knows which registers +** are in use at that time. +*/ +static void codeclosure (LexState *ls, expdesc *v) { + FuncState *fs = ls->fs->prev; + init_exp(v, VRELOCABLE, luaK_codeABx(fs, OP_CLOSURE, 0, fs->np - 1)); + luaK_exp2nextreg(fs, v); /* fix it at the last register */ +} + + +static void open_func (LexState *ls, FuncState *fs, BlockCnt *bl) { + Proto *f; + fs->prev = ls->fs; /* linked list of funcstates */ + fs->ls = ls; + ls->fs = fs; + fs->pc = 0; + fs->lasttarget = 0; + fs->jpc = NO_JUMP; + fs->freereg = 0; + fs->nk = 0; + fs->np = 0; + fs->nups = 0; + fs->nlocvars = 0; + fs->nactvar = 0; + fs->firstlocal = ls->dyd->actvar.n; + fs->bl = NULL; + f = fs->f; + f->source = ls->source; + f->maxstacksize = 2; /* registers 0/1 are always valid */ + enterblock(fs, bl, 0); +} + + +static void close_func (LexState *ls) { + lua_State *L = ls->L; + FuncState *fs = ls->fs; + Proto *f = fs->f; + luaK_ret(fs, 0, 0); /* final return */ + leaveblock(fs); + luaM_reallocvector(L, f->code, f->sizecode, fs->pc, Instruction); + f->sizecode = fs->pc; + luaM_reallocvector(L, f->lineinfo, f->sizelineinfo, fs->pc, int); + f->sizelineinfo = fs->pc; + luaM_reallocvector(L, f->k, f->sizek, fs->nk, TValue); + f->sizek = fs->nk; + luaM_reallocvector(L, f->p, f->sizep, fs->np, Proto *); + f->sizep = fs->np; + luaM_reallocvector(L, f->locvars, f->sizelocvars, fs->nlocvars, LocVar); + f->sizelocvars = fs->nlocvars; + luaM_reallocvector(L, f->upvalues, f->sizeupvalues, fs->nups, Upvaldesc); + f->sizeupvalues = fs->nups; + lua_assert(fs->bl == NULL); + ls->fs = fs->prev; + luaC_checkGC(L); +} + + + +/*============================================================*/ +/* GRAMMAR RULES */ +/*============================================================*/ + + +/* +** check whether current token is in the follow set of a block. +** 'until' closes syntactical blocks, but do not close scope, +** so it is handled in separate. +*/ +static int block_follow (LexState *ls, int withuntil) { + switch (ls->t.token) { + case TK_ELSE: case TK_ELSEIF: + case TK_END: case TK_EOS: + return 1; + case TK_UNTIL: return withuntil; + default: return 0; + } +} + + +static void statlist (LexState *ls) { + /* statlist -> { stat [';'] } */ + while (!block_follow(ls, 1)) { + if (ls->t.token == TK_RETURN) { + statement(ls); + return; /* 'return' must be last statement */ + } + statement(ls); + } +} + + +static void fieldsel (LexState *ls, expdesc *v) { + /* fieldsel -> ['.' | ':'] NAME */ + FuncState *fs = ls->fs; + expdesc key; + luaK_exp2anyregup(fs, v); + luaX_next(ls); /* skip the dot or colon */ + checkname(ls, &key); + luaK_indexed(fs, v, &key); +} + + +static void yindex (LexState *ls, expdesc *v) { + /* index -> '[' expr ']' */ + luaX_next(ls); /* skip the '[' */ + expr(ls, v); + luaK_exp2val(ls->fs, v); + checknext(ls, ']'); +} + + +/* +** {====================================================================== +** Rules for Constructors +** ======================================================================= +*/ + + +struct ConsControl { + expdesc v; /* last list item read */ + expdesc *t; /* table descriptor */ + int nh; /* total number of 'record' elements */ + int na; /* total number of array elements */ + int tostore; /* number of array elements pending to be stored */ +}; + + +static void recfield (LexState *ls, struct ConsControl *cc) { + /* recfield -> (NAME | '['exp1']') = exp1 */ + FuncState *fs = ls->fs; + int reg = ls->fs->freereg; + expdesc key, val; + int rkkey; + if (ls->t.token == TK_NAME) { + checklimit(fs, cc->nh, MAX_INT, "items in a constructor"); + checkname(ls, &key); + } + else /* ls->t.token == '[' */ + yindex(ls, &key); + cc->nh++; + checknext(ls, '='); + rkkey = luaK_exp2RK(fs, &key); + expr(ls, &val); + luaK_codeABC(fs, OP_SETTABLE, cc->t->u.info, rkkey, luaK_exp2RK(fs, &val)); + fs->freereg = reg; /* free registers */ +} + + +static void closelistfield (FuncState *fs, struct ConsControl *cc) { + if (cc->v.k == VVOID) return; /* there is no list item */ + luaK_exp2nextreg(fs, &cc->v); + cc->v.k = VVOID; + if (cc->tostore == LFIELDS_PER_FLUSH) { + luaK_setlist(fs, cc->t->u.info, cc->na, cc->tostore); /* flush */ + cc->tostore = 0; /* no more items pending */ + } +} + + +static void lastlistfield (FuncState *fs, struct ConsControl *cc) { + if (cc->tostore == 0) return; + if (hasmultret(cc->v.k)) { + luaK_setmultret(fs, &cc->v); + luaK_setlist(fs, cc->t->u.info, cc->na, LUA_MULTRET); + cc->na--; /* do not count last expression (unknown number of elements) */ + } + else { + if (cc->v.k != VVOID) + luaK_exp2nextreg(fs, &cc->v); + luaK_setlist(fs, cc->t->u.info, cc->na, cc->tostore); + } +} + + +static void listfield (LexState *ls, struct ConsControl *cc) { + /* listfield -> exp */ + expr(ls, &cc->v); + checklimit(ls->fs, cc->na, MAX_INT, "items in a constructor"); + cc->na++; + cc->tostore++; +} + + +static void field (LexState *ls, struct ConsControl *cc) { + /* field -> listfield | recfield */ + switch(ls->t.token) { + case TK_NAME: { /* may be 'listfield' or 'recfield' */ + if (luaX_lookahead(ls) != '=') /* expression? */ + listfield(ls, cc); + else + recfield(ls, cc); + break; + } + case '[': { + recfield(ls, cc); + break; + } + default: { + listfield(ls, cc); + break; + } + } +} + + +static void constructor (LexState *ls, expdesc *t) { + /* constructor -> '{' [ field { sep field } [sep] ] '}' + sep -> ',' | ';' */ + FuncState *fs = ls->fs; + int line = ls->linenumber; + int pc = luaK_codeABC(fs, OP_NEWTABLE, 0, 0, 0); + struct ConsControl cc; + cc.na = cc.nh = cc.tostore = 0; + cc.t = t; + init_exp(t, VRELOCABLE, pc); + init_exp(&cc.v, VVOID, 0); /* no value (yet) */ + luaK_exp2nextreg(ls->fs, t); /* fix it at stack top */ + checknext(ls, '{'); + do { + lua_assert(cc.v.k == VVOID || cc.tostore > 0); + if (ls->t.token == '}') break; + closelistfield(fs, &cc); + field(ls, &cc); + } while (testnext(ls, ',') || testnext(ls, ';')); + check_match(ls, '}', '{', line); + lastlistfield(fs, &cc); + SETARG_B(fs->f->code[pc], luaO_int2fb(cc.na)); /* set initial array size */ + SETARG_C(fs->f->code[pc], luaO_int2fb(cc.nh)); /* set initial table size */ +} + +/* }====================================================================== */ + + + +static void parlist (LexState *ls) { + /* parlist -> [ param { ',' param } ] */ + FuncState *fs = ls->fs; + Proto *f = fs->f; + int nparams = 0; + f->is_vararg = 0; + if (ls->t.token != ')') { /* is 'parlist' not empty? */ + do { + switch (ls->t.token) { + case TK_NAME: { /* param -> NAME */ + new_localvar(ls, str_checkname(ls)); + nparams++; + break; + } + case TK_DOTS: { /* param -> '...' */ + luaX_next(ls); + f->is_vararg = 1; /* declared vararg */ + break; + } + default: luaX_syntaxerror(ls, " or '...' expected"); + } + } while (!f->is_vararg && testnext(ls, ',')); + } + adjustlocalvars(ls, nparams); + f->numparams = cast_byte(fs->nactvar); + luaK_reserveregs(fs, fs->nactvar); /* reserve register for parameters */ +} + + +static void body (LexState *ls, expdesc *e, int ismethod, int line) { + /* body -> '(' parlist ')' block END */ + FuncState new_fs; + BlockCnt bl; + new_fs.f = addprototype(ls); + new_fs.f->linedefined = line; + open_func(ls, &new_fs, &bl); + checknext(ls, '('); + if (ismethod) { + new_localvarliteral(ls, "self"); /* create 'self' parameter */ + adjustlocalvars(ls, 1); + } + parlist(ls); + checknext(ls, ')'); + statlist(ls); + new_fs.f->lastlinedefined = ls->linenumber; + check_match(ls, TK_END, TK_FUNCTION, line); + codeclosure(ls, e); + close_func(ls); +} + + +static int explist (LexState *ls, expdesc *v) { + /* explist -> expr { ',' expr } */ + int n = 1; /* at least one expression */ + expr(ls, v); + while (testnext(ls, ',')) { + luaK_exp2nextreg(ls->fs, v); + expr(ls, v); + n++; + } + return n; +} + + +static void funcargs (LexState *ls, expdesc *f, int line) { + FuncState *fs = ls->fs; + expdesc args; + int base, nparams; + switch (ls->t.token) { + case '(': { /* funcargs -> '(' [ explist ] ')' */ + luaX_next(ls); + if (ls->t.token == ')') /* arg list is empty? */ + args.k = VVOID; + else { + explist(ls, &args); + luaK_setmultret(fs, &args); + } + check_match(ls, ')', '(', line); + break; + } + case '{': { /* funcargs -> constructor */ + constructor(ls, &args); + break; + } + case TK_STRING: { /* funcargs -> STRING */ + codestring(ls, &args, ls->t.seminfo.ts); + luaX_next(ls); /* must use 'seminfo' before 'next' */ + break; + } + default: { + luaX_syntaxerror(ls, "function arguments expected"); + } + } + lua_assert(f->k == VNONRELOC); + base = f->u.info; /* base register for call */ + if (hasmultret(args.k)) + nparams = LUA_MULTRET; /* open call */ + else { + if (args.k != VVOID) + luaK_exp2nextreg(fs, &args); /* close last argument */ + nparams = fs->freereg - (base+1); + } + init_exp(f, VCALL, luaK_codeABC(fs, OP_CALL, base, nparams+1, 2)); + luaK_fixline(fs, line); + fs->freereg = base+1; /* call remove function and arguments and leaves + (unless changed) one result */ +} + + + + +/* +** {====================================================================== +** Expression parsing +** ======================================================================= +*/ + + +static void primaryexp (LexState *ls, expdesc *v) { + /* primaryexp -> NAME | '(' expr ')' */ + switch (ls->t.token) { + case '(': { + int line = ls->linenumber; + luaX_next(ls); + expr(ls, v); + check_match(ls, ')', '(', line); + luaK_dischargevars(ls->fs, v); + return; + } + case TK_NAME: { + singlevar(ls, v); + return; + } + default: { + luaX_syntaxerror(ls, "unexpected symbol"); + } + } +} + + +static void suffixedexp (LexState *ls, expdesc *v) { + /* suffixedexp -> + primaryexp { '.' NAME | '[' exp ']' | ':' NAME funcargs | funcargs } */ + FuncState *fs = ls->fs; + int line = ls->linenumber; + primaryexp(ls, v); + for (;;) { + switch (ls->t.token) { + case '.': { /* fieldsel */ + fieldsel(ls, v); + break; + } + case '[': { /* '[' exp1 ']' */ + expdesc key; + luaK_exp2anyregup(fs, v); + yindex(ls, &key); + luaK_indexed(fs, v, &key); + break; + } + case ':': { /* ':' NAME funcargs */ + expdesc key; + luaX_next(ls); + checkname(ls, &key); + luaK_self(fs, v, &key); + funcargs(ls, v, line); + break; + } + case '(': case TK_STRING: case '{': { /* funcargs */ + luaK_exp2nextreg(fs, v); + funcargs(ls, v, line); + break; + } + default: return; + } + } +} + + +static void simpleexp (LexState *ls, expdesc *v) { + /* simpleexp -> FLT | INT | STRING | NIL | TRUE | FALSE | ... | + constructor | FUNCTION body | suffixedexp */ + switch (ls->t.token) { + case TK_FLT: { + init_exp(v, VKFLT, 0); + v->u.nval = ls->t.seminfo.r; + break; + } + case TK_INT: { + init_exp(v, VKINT, 0); + v->u.ival = ls->t.seminfo.i; + break; + } + case TK_STRING: { + codestring(ls, v, ls->t.seminfo.ts); + break; + } + case TK_NIL: { + init_exp(v, VNIL, 0); + break; + } + case TK_TRUE: { + init_exp(v, VTRUE, 0); + break; + } + case TK_FALSE: { + init_exp(v, VFALSE, 0); + break; + } + case TK_DOTS: { /* vararg */ + FuncState *fs = ls->fs; + check_condition(ls, fs->f->is_vararg, + "cannot use '...' outside a vararg function"); + init_exp(v, VVARARG, luaK_codeABC(fs, OP_VARARG, 0, 1, 0)); + break; + } + case '{': { /* constructor */ + constructor(ls, v); + return; + } + case TK_FUNCTION: { + luaX_next(ls); + body(ls, v, 0, ls->linenumber); + return; + } + default: { + suffixedexp(ls, v); + return; + } + } + luaX_next(ls); +} + + +static UnOpr getunopr (int op) { + switch (op) { + case TK_NOT: return OPR_NOT; + case '-': return OPR_MINUS; + case '~': return OPR_BNOT; + case '#': return OPR_LEN; + default: return OPR_NOUNOPR; + } +} + + +static BinOpr getbinopr (int op) { + switch (op) { + case '+': return OPR_ADD; + case '-': return OPR_SUB; + case '*': return OPR_MUL; + case '%': return OPR_MOD; + case '^': return OPR_POW; + case '/': return OPR_DIV; + case TK_IDIV: return OPR_IDIV; + case '&': return OPR_BAND; + case '|': return OPR_BOR; + case '~': return OPR_BXOR; + case TK_SHL: return OPR_SHL; + case TK_SHR: return OPR_SHR; + case TK_CONCAT: return OPR_CONCAT; + case TK_NE: return OPR_NE; + case TK_EQ: return OPR_EQ; + case '<': return OPR_LT; + case TK_LE: return OPR_LE; + case '>': return OPR_GT; + case TK_GE: return OPR_GE; + case TK_AND: return OPR_AND; + case TK_OR: return OPR_OR; + default: return OPR_NOBINOPR; + } +} + + +static const struct { + lu_byte left; /* left priority for each binary operator */ + lu_byte right; /* right priority */ +} priority[] = { /* ORDER OPR */ + {10, 10}, {10, 10}, /* '+' '-' */ + {11, 11}, {11, 11}, /* '*' '%' */ + {14, 13}, /* '^' (right associative) */ + {11, 11}, {11, 11}, /* '/' '//' */ + {6, 6}, {4, 4}, {5, 5}, /* '&' '|' '~' */ + {7, 7}, {7, 7}, /* '<<' '>>' */ + {9, 8}, /* '..' (right associative) */ + {3, 3}, {3, 3}, {3, 3}, /* ==, <, <= */ + {3, 3}, {3, 3}, {3, 3}, /* ~=, >, >= */ + {2, 2}, {1, 1} /* and, or */ +}; + +#define UNARY_PRIORITY 12 /* priority for unary operators */ + + +/* +** subexpr -> (simpleexp | unop subexpr) { binop subexpr } +** where 'binop' is any binary operator with a priority higher than 'limit' +*/ +static BinOpr subexpr (LexState *ls, expdesc *v, int limit) { + BinOpr op; + UnOpr uop; + enterlevel(ls); + uop = getunopr(ls->t.token); + if (uop != OPR_NOUNOPR) { + int line = ls->linenumber; + luaX_next(ls); + subexpr(ls, v, UNARY_PRIORITY); + luaK_prefix(ls->fs, uop, v, line); + } + else simpleexp(ls, v); + /* expand while operators have priorities higher than 'limit' */ + op = getbinopr(ls->t.token); + while (op != OPR_NOBINOPR && priority[op].left > limit) { + expdesc v2; + BinOpr nextop; + int line = ls->linenumber; + luaX_next(ls); + luaK_infix(ls->fs, op, v); + /* read sub-expression with higher priority */ + nextop = subexpr(ls, &v2, priority[op].right); + luaK_posfix(ls->fs, op, v, &v2, line); + op = nextop; + } + leavelevel(ls); + return op; /* return first untreated operator */ +} + + +static void expr (LexState *ls, expdesc *v) { + subexpr(ls, v, 0); +} + +/* }==================================================================== */ + + + +/* +** {====================================================================== +** Rules for Statements +** ======================================================================= +*/ + + +static void block (LexState *ls) { + /* block -> statlist */ + FuncState *fs = ls->fs; + BlockCnt bl; + enterblock(fs, &bl, 0); + statlist(ls); + leaveblock(fs); +} + + +/* +** structure to chain all variables in the left-hand side of an +** assignment +*/ +struct LHS_assign { + struct LHS_assign *prev; + expdesc v; /* variable (global, local, upvalue, or indexed) */ +}; + + +/* +** check whether, in an assignment to an upvalue/local variable, the +** upvalue/local variable is begin used in a previous assignment to a +** table. If so, save original upvalue/local value in a safe place and +** use this safe copy in the previous assignment. +*/ +static void check_conflict (LexState *ls, struct LHS_assign *lh, expdesc *v) { + FuncState *fs = ls->fs; + int extra = fs->freereg; /* eventual position to save local variable */ + int conflict = 0; + for (; lh; lh = lh->prev) { /* check all previous assignments */ + if (lh->v.k == VINDEXED) { /* assigning to a table? */ + /* table is the upvalue/local being assigned now? */ + if (lh->v.u.ind.vt == v->k && lh->v.u.ind.t == v->u.info) { + conflict = 1; + lh->v.u.ind.vt = VLOCAL; + lh->v.u.ind.t = extra; /* previous assignment will use safe copy */ + } + /* index is the local being assigned? (index cannot be upvalue) */ + if (v->k == VLOCAL && lh->v.u.ind.idx == v->u.info) { + conflict = 1; + lh->v.u.ind.idx = extra; /* previous assignment will use safe copy */ + } + } + } + if (conflict) { + /* copy upvalue/local value to a temporary (in position 'extra') */ + OpCode op = (v->k == VLOCAL) ? OP_MOVE : OP_GETUPVAL; + luaK_codeABC(fs, op, extra, v->u.info, 0); + luaK_reserveregs(fs, 1); + } +} + + +static void assignment (LexState *ls, struct LHS_assign *lh, int nvars) { + expdesc e; + check_condition(ls, vkisvar(lh->v.k), "syntax error"); + if (testnext(ls, ',')) { /* assignment -> ',' suffixedexp assignment */ + struct LHS_assign nv; + nv.prev = lh; + suffixedexp(ls, &nv.v); + if (nv.v.k != VINDEXED) + check_conflict(ls, lh, &nv.v); + checklimit(ls->fs, nvars + ls->L->nCcalls, LUAI_MAXCCALLS, + "C levels"); + assignment(ls, &nv, nvars+1); + } + else { /* assignment -> '=' explist */ + int nexps; + checknext(ls, '='); + nexps = explist(ls, &e); + if (nexps != nvars) + adjust_assign(ls, nvars, nexps, &e); + else { + luaK_setoneret(ls->fs, &e); /* close last expression */ + luaK_storevar(ls->fs, &lh->v, &e); + return; /* avoid default */ + } + } + init_exp(&e, VNONRELOC, ls->fs->freereg-1); /* default assignment */ + luaK_storevar(ls->fs, &lh->v, &e); +} + + +static int cond (LexState *ls) { + /* cond -> exp */ + expdesc v; + expr(ls, &v); /* read condition */ + if (v.k == VNIL) v.k = VFALSE; /* 'falses' are all equal here */ + luaK_goiftrue(ls->fs, &v); + return v.f; +} + + +static void gotostat (LexState *ls, int pc) { + int line = ls->linenumber; + TString *label; + int g; + if (testnext(ls, TK_GOTO)) + label = str_checkname(ls); + else { + luaX_next(ls); /* skip break */ + label = luaS_new(ls->L, "break"); + } + g = newlabelentry(ls, &ls->dyd->gt, label, line, pc); + findlabel(ls, g); /* close it if label already defined */ +} + + +/* check for repeated labels on the same block */ +static void checkrepeated (FuncState *fs, Labellist *ll, TString *label) { + int i; + for (i = fs->bl->firstlabel; i < ll->n; i++) { + if (eqstr(label, ll->arr[i].name)) { + const char *msg = luaO_pushfstring(fs->ls->L, + "label '%s' already defined on line %d", + getstr(label), ll->arr[i].line); + semerror(fs->ls, msg); + } + } +} + + +/* skip no-op statements */ +static void skipnoopstat (LexState *ls) { + while (ls->t.token == ';' || ls->t.token == TK_DBCOLON) + statement(ls); +} + + +static void labelstat (LexState *ls, TString *label, int line) { + /* label -> '::' NAME '::' */ + FuncState *fs = ls->fs; + Labellist *ll = &ls->dyd->label; + int l; /* index of new label being created */ + checkrepeated(fs, ll, label); /* check for repeated labels */ + checknext(ls, TK_DBCOLON); /* skip double colon */ + /* create new entry for this label */ + l = newlabelentry(ls, ll, label, line, luaK_getlabel(fs)); + skipnoopstat(ls); /* skip other no-op statements */ + if (block_follow(ls, 0)) { /* label is last no-op statement in the block? */ + /* assume that locals are already out of scope */ + ll->arr[l].nactvar = fs->bl->nactvar; + } + findgotos(ls, &ll->arr[l]); +} + + +static void whilestat (LexState *ls, int line) { + /* whilestat -> WHILE cond DO block END */ + FuncState *fs = ls->fs; + int whileinit; + int condexit; + BlockCnt bl; + luaX_next(ls); /* skip WHILE */ + whileinit = luaK_getlabel(fs); + condexit = cond(ls); + enterblock(fs, &bl, 1); + checknext(ls, TK_DO); + block(ls); + luaK_jumpto(fs, whileinit); + check_match(ls, TK_END, TK_WHILE, line); + leaveblock(fs); + luaK_patchtohere(fs, condexit); /* false conditions finish the loop */ +} + + +static void repeatstat (LexState *ls, int line) { + /* repeatstat -> REPEAT block UNTIL cond */ + int condexit; + FuncState *fs = ls->fs; + int repeat_init = luaK_getlabel(fs); + BlockCnt bl1, bl2; + enterblock(fs, &bl1, 1); /* loop block */ + enterblock(fs, &bl2, 0); /* scope block */ + luaX_next(ls); /* skip REPEAT */ + statlist(ls); + check_match(ls, TK_UNTIL, TK_REPEAT, line); + condexit = cond(ls); /* read condition (inside scope block) */ + if (bl2.upval) /* upvalues? */ + luaK_patchclose(fs, condexit, bl2.nactvar); + leaveblock(fs); /* finish scope */ + luaK_patchlist(fs, condexit, repeat_init); /* close the loop */ + leaveblock(fs); /* finish loop */ +} + + +static int exp1 (LexState *ls) { + expdesc e; + int reg; + expr(ls, &e); + luaK_exp2nextreg(ls->fs, &e); + lua_assert(e.k == VNONRELOC); + reg = e.u.info; + return reg; +} + + +static void forbody (LexState *ls, int base, int line, int nvars, int isnum) { + /* forbody -> DO block */ + BlockCnt bl; + FuncState *fs = ls->fs; + int prep, endfor; + adjustlocalvars(ls, 3); /* control variables */ + checknext(ls, TK_DO); + prep = isnum ? luaK_codeAsBx(fs, OP_FORPREP, base, NO_JUMP) : luaK_jump(fs); + enterblock(fs, &bl, 0); /* scope for declared variables */ + adjustlocalvars(ls, nvars); + luaK_reserveregs(fs, nvars); + block(ls); + leaveblock(fs); /* end of scope for declared variables */ + luaK_patchtohere(fs, prep); + if (isnum) /* numeric for? */ + endfor = luaK_codeAsBx(fs, OP_FORLOOP, base, NO_JUMP); + else { /* generic for */ + luaK_codeABC(fs, OP_TFORCALL, base, 0, nvars); + luaK_fixline(fs, line); + endfor = luaK_codeAsBx(fs, OP_TFORLOOP, base + 2, NO_JUMP); + } + luaK_patchlist(fs, endfor, prep + 1); + luaK_fixline(fs, line); +} + + +static void fornum (LexState *ls, TString *varname, int line) { + /* fornum -> NAME = exp1,exp1[,exp1] forbody */ + FuncState *fs = ls->fs; + int base = fs->freereg; + new_localvarliteral(ls, "(for index)"); + new_localvarliteral(ls, "(for limit)"); + new_localvarliteral(ls, "(for step)"); + new_localvar(ls, varname); + checknext(ls, '='); + exp1(ls); /* initial value */ + checknext(ls, ','); + exp1(ls); /* limit */ + if (testnext(ls, ',')) + exp1(ls); /* optional step */ + else { /* default step = 1 */ + luaK_codek(fs, fs->freereg, luaK_intK(fs, 1)); + luaK_reserveregs(fs, 1); + } + forbody(ls, base, line, 1, 1); +} + + +static void forlist (LexState *ls, TString *indexname) { + /* forlist -> NAME {,NAME} IN explist forbody */ + FuncState *fs = ls->fs; + expdesc e; + int nvars = 4; /* gen, state, control, plus at least one declared var */ + int line; + int base = fs->freereg; + /* create control variables */ + new_localvarliteral(ls, "(for generator)"); + new_localvarliteral(ls, "(for state)"); + new_localvarliteral(ls, "(for control)"); + /* create declared variables */ + new_localvar(ls, indexname); + while (testnext(ls, ',')) { + new_localvar(ls, str_checkname(ls)); + nvars++; + } + checknext(ls, TK_IN); + line = ls->linenumber; + adjust_assign(ls, 3, explist(ls, &e), &e); + luaK_checkstack(fs, 3); /* extra space to call generator */ + forbody(ls, base, line, nvars - 3, 0); +} + + +static void forstat (LexState *ls, int line) { + /* forstat -> FOR (fornum | forlist) END */ + FuncState *fs = ls->fs; + TString *varname; + BlockCnt bl; + enterblock(fs, &bl, 1); /* scope for loop and control variables */ + luaX_next(ls); /* skip 'for' */ + varname = str_checkname(ls); /* first variable name */ + switch (ls->t.token) { + case '=': fornum(ls, varname, line); break; + case ',': case TK_IN: forlist(ls, varname); break; + default: luaX_syntaxerror(ls, "'=' or 'in' expected"); + } + check_match(ls, TK_END, TK_FOR, line); + leaveblock(fs); /* loop scope ('break' jumps to this point) */ +} + + +static void test_then_block (LexState *ls, int *escapelist) { + /* test_then_block -> [IF | ELSEIF] cond THEN block */ + BlockCnt bl; + FuncState *fs = ls->fs; + expdesc v; + int jf; /* instruction to skip 'then' code (if condition is false) */ + luaX_next(ls); /* skip IF or ELSEIF */ + expr(ls, &v); /* read condition */ + checknext(ls, TK_THEN); + if (ls->t.token == TK_GOTO || ls->t.token == TK_BREAK) { + luaK_goiffalse(ls->fs, &v); /* will jump to label if condition is true */ + enterblock(fs, &bl, 0); /* must enter block before 'goto' */ + gotostat(ls, v.t); /* handle goto/break */ + skipnoopstat(ls); /* skip other no-op statements */ + if (block_follow(ls, 0)) { /* 'goto' is the entire block? */ + leaveblock(fs); + return; /* and that is it */ + } + else /* must skip over 'then' part if condition is false */ + jf = luaK_jump(fs); + } + else { /* regular case (not goto/break) */ + luaK_goiftrue(ls->fs, &v); /* skip over block if condition is false */ + enterblock(fs, &bl, 0); + jf = v.f; + } + statlist(ls); /* 'then' part */ + leaveblock(fs); + if (ls->t.token == TK_ELSE || + ls->t.token == TK_ELSEIF) /* followed by 'else'/'elseif'? */ + luaK_concat(fs, escapelist, luaK_jump(fs)); /* must jump over it */ + luaK_patchtohere(fs, jf); +} + + +static void ifstat (LexState *ls, int line) { + /* ifstat -> IF cond THEN block {ELSEIF cond THEN block} [ELSE block] END */ + FuncState *fs = ls->fs; + int escapelist = NO_JUMP; /* exit list for finished parts */ + test_then_block(ls, &escapelist); /* IF cond THEN block */ + while (ls->t.token == TK_ELSEIF) + test_then_block(ls, &escapelist); /* ELSEIF cond THEN block */ + if (testnext(ls, TK_ELSE)) + block(ls); /* 'else' part */ + check_match(ls, TK_END, TK_IF, line); + luaK_patchtohere(fs, escapelist); /* patch escape list to 'if' end */ +} + + +static void localfunc (LexState *ls) { + expdesc b; + FuncState *fs = ls->fs; + new_localvar(ls, str_checkname(ls)); /* new local variable */ + adjustlocalvars(ls, 1); /* enter its scope */ + body(ls, &b, 0, ls->linenumber); /* function created in next register */ + /* debug information will only see the variable after this point! */ + getlocvar(fs, b.u.info)->startpc = fs->pc; +} + + +static void localstat (LexState *ls) { + /* stat -> LOCAL NAME {',' NAME} ['=' explist] */ + int nvars = 0; + int nexps; + expdesc e; + do { + new_localvar(ls, str_checkname(ls)); + nvars++; + } while (testnext(ls, ',')); + if (testnext(ls, '=')) + nexps = explist(ls, &e); + else { + e.k = VVOID; + nexps = 0; + } + adjust_assign(ls, nvars, nexps, &e); + adjustlocalvars(ls, nvars); +} + + +static int funcname (LexState *ls, expdesc *v) { + /* funcname -> NAME {fieldsel} [':' NAME] */ + int ismethod = 0; + singlevar(ls, v); + while (ls->t.token == '.') + fieldsel(ls, v); + if (ls->t.token == ':') { + ismethod = 1; + fieldsel(ls, v); + } + return ismethod; +} + + +static void funcstat (LexState *ls, int line) { + /* funcstat -> FUNCTION funcname body */ + int ismethod; + expdesc v, b; + luaX_next(ls); /* skip FUNCTION */ + ismethod = funcname(ls, &v); + body(ls, &b, ismethod, line); + luaK_storevar(ls->fs, &v, &b); + luaK_fixline(ls->fs, line); /* definition "happens" in the first line */ +} + + +static void exprstat (LexState *ls) { + /* stat -> func | assignment */ + FuncState *fs = ls->fs; + struct LHS_assign v; + suffixedexp(ls, &v.v); + if (ls->t.token == '=' || ls->t.token == ',') { /* stat -> assignment ? */ + v.prev = NULL; + assignment(ls, &v, 1); + } + else { /* stat -> func */ + check_condition(ls, v.v.k == VCALL, "syntax error"); + SETARG_C(getinstruction(fs, &v.v), 1); /* call statement uses no results */ + } +} + + +static void retstat (LexState *ls) { + /* stat -> RETURN [explist] [';'] */ + FuncState *fs = ls->fs; + expdesc e; + int first, nret; /* registers with returned values */ + if (block_follow(ls, 1) || ls->t.token == ';') + first = nret = 0; /* return no values */ + else { + nret = explist(ls, &e); /* optional return values */ + if (hasmultret(e.k)) { + luaK_setmultret(fs, &e); + if (e.k == VCALL && nret == 1) { /* tail call? */ + SET_OPCODE(getinstruction(fs,&e), OP_TAILCALL); + lua_assert(GETARG_A(getinstruction(fs,&e)) == fs->nactvar); + } + first = fs->nactvar; + nret = LUA_MULTRET; /* return all values */ + } + else { + if (nret == 1) /* only one single value? */ + first = luaK_exp2anyreg(fs, &e); + else { + luaK_exp2nextreg(fs, &e); /* values must go to the stack */ + first = fs->nactvar; /* return all active values */ + lua_assert(nret == fs->freereg - first); + } + } + } + luaK_ret(fs, first, nret); + testnext(ls, ';'); /* skip optional semicolon */ +} + + +static void statement (LexState *ls) { + int line = ls->linenumber; /* may be needed for error messages */ + enterlevel(ls); + switch (ls->t.token) { + case ';': { /* stat -> ';' (empty statement) */ + luaX_next(ls); /* skip ';' */ + break; + } + case TK_IF: { /* stat -> ifstat */ + ifstat(ls, line); + break; + } + case TK_WHILE: { /* stat -> whilestat */ + whilestat(ls, line); + break; + } + case TK_DO: { /* stat -> DO block END */ + luaX_next(ls); /* skip DO */ + block(ls); + check_match(ls, TK_END, TK_DO, line); + break; + } + case TK_FOR: { /* stat -> forstat */ + forstat(ls, line); + break; + } + case TK_REPEAT: { /* stat -> repeatstat */ + repeatstat(ls, line); + break; + } + case TK_FUNCTION: { /* stat -> funcstat */ + funcstat(ls, line); + break; + } + case TK_LOCAL: { /* stat -> localstat */ + luaX_next(ls); /* skip LOCAL */ + if (testnext(ls, TK_FUNCTION)) /* local function? */ + localfunc(ls); + else + localstat(ls); + break; + } + case TK_DBCOLON: { /* stat -> label */ + luaX_next(ls); /* skip double colon */ + labelstat(ls, str_checkname(ls), line); + break; + } + case TK_RETURN: { /* stat -> retstat */ + luaX_next(ls); /* skip RETURN */ + retstat(ls); + break; + } + case TK_BREAK: /* stat -> breakstat */ + case TK_GOTO: { /* stat -> 'goto' NAME */ + gotostat(ls, luaK_jump(ls->fs)); + break; + } + default: { /* stat -> func | assignment */ + exprstat(ls); + break; + } + } + lua_assert(ls->fs->f->maxstacksize >= ls->fs->freereg && + ls->fs->freereg >= ls->fs->nactvar); + ls->fs->freereg = ls->fs->nactvar; /* free registers */ + leavelevel(ls); +} + +/* }====================================================================== */ + + +/* +** compiles the main function, which is a regular vararg function with an +** upvalue named LUA_ENV +*/ +static void mainfunc (LexState *ls, FuncState *fs) { + BlockCnt bl; + expdesc v; + open_func(ls, fs, &bl); + fs->f->is_vararg = 1; /* main function is always declared vararg */ + init_exp(&v, VLOCAL, 0); /* create and... */ + newupvalue(fs, ls->envn, &v); /* ...set environment upvalue */ + luaX_next(ls); /* read first token */ + statlist(ls); /* parse main body */ + check(ls, TK_EOS); + close_func(ls); +} + + +LClosure *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff, + Dyndata *dyd, const char *name, int firstchar) { + LexState lexstate; + FuncState funcstate; + LClosure *cl = luaF_newLclosure(L, 1); /* create main closure */ + setclLvalue(L, L->top, cl); /* anchor it (to avoid being collected) */ + luaD_inctop(L); + lexstate.h = luaH_new(L); /* create table for scanner */ + sethvalue(L, L->top, lexstate.h); /* anchor it */ + luaD_inctop(L); + funcstate.f = cl->p = luaF_newproto(L); + funcstate.f->source = luaS_new(L, name); /* create and anchor TString */ + lua_assert(iswhite(funcstate.f)); /* do not need barrier here */ + lexstate.buff = buff; + lexstate.dyd = dyd; + dyd->actvar.n = dyd->gt.n = dyd->label.n = 0; + luaX_setinput(L, &lexstate, z, funcstate.f->source, firstchar); + mainfunc(&lexstate, &funcstate); + lua_assert(!funcstate.prev && funcstate.nups == 1 && !lexstate.fs); + /* all scopes should be correctly finished */ + lua_assert(dyd->actvar.n == 0 && dyd->gt.n == 0 && dyd->label.n == 0); + L->top--; /* remove scanner's table */ + return cl; /* closure is on the stack, too */ +} + diff --git a/deps/rcheevos/test/lua/src/lparser.h b/deps/rcheevos/test/lua/src/lparser.h new file mode 100644 index 0000000000..02e9b03aeb --- /dev/null +++ b/deps/rcheevos/test/lua/src/lparser.h @@ -0,0 +1,133 @@ +/* +** $Id: lparser.h,v 1.76 2015/12/30 18:16:13 roberto Exp $ +** Lua Parser +** See Copyright Notice in lua.h +*/ + +#ifndef lparser_h +#define lparser_h + +#include "llimits.h" +#include "lobject.h" +#include "lzio.h" + + +/* +** Expression and variable descriptor. +** Code generation for variables and expressions can be delayed to allow +** optimizations; An 'expdesc' structure describes a potentially-delayed +** variable/expression. It has a description of its "main" value plus a +** list of conditional jumps that can also produce its value (generated +** by short-circuit operators 'and'/'or'). +*/ + +/* kinds of variables/expressions */ +typedef enum { + VVOID, /* when 'expdesc' describes the last expression a list, + this kind means an empty list (so, no expression) */ + VNIL, /* constant nil */ + VTRUE, /* constant true */ + VFALSE, /* constant false */ + VK, /* constant in 'k'; info = index of constant in 'k' */ + VKFLT, /* floating constant; nval = numerical float value */ + VKINT, /* integer constant; nval = numerical integer value */ + VNONRELOC, /* expression has its value in a fixed register; + info = result register */ + VLOCAL, /* local variable; info = local register */ + VUPVAL, /* upvalue variable; info = index of upvalue in 'upvalues' */ + VINDEXED, /* indexed variable; + ind.vt = whether 't' is register or upvalue; + ind.t = table register or upvalue; + ind.idx = key's R/K index */ + VJMP, /* expression is a test/comparison; + info = pc of corresponding jump instruction */ + VRELOCABLE, /* expression can put result in any register; + info = instruction pc */ + VCALL, /* expression is a function call; info = instruction pc */ + VVARARG /* vararg expression; info = instruction pc */ +} expkind; + + +#define vkisvar(k) (VLOCAL <= (k) && (k) <= VINDEXED) +#define vkisinreg(k) ((k) == VNONRELOC || (k) == VLOCAL) + +typedef struct expdesc { + expkind k; + union { + lua_Integer ival; /* for VKINT */ + lua_Number nval; /* for VKFLT */ + int info; /* for generic use */ + struct { /* for indexed variables (VINDEXED) */ + short idx; /* index (R/K) */ + lu_byte t; /* table (register or upvalue) */ + lu_byte vt; /* whether 't' is register (VLOCAL) or upvalue (VUPVAL) */ + } ind; + } u; + int t; /* patch list of 'exit when true' */ + int f; /* patch list of 'exit when false' */ +} expdesc; + + +/* description of active local variable */ +typedef struct Vardesc { + short idx; /* variable index in stack */ +} Vardesc; + + +/* description of pending goto statements and label statements */ +typedef struct Labeldesc { + TString *name; /* label identifier */ + int pc; /* position in code */ + int line; /* line where it appeared */ + lu_byte nactvar; /* local level where it appears in current block */ +} Labeldesc; + + +/* list of labels or gotos */ +typedef struct Labellist { + Labeldesc *arr; /* array */ + int n; /* number of entries in use */ + int size; /* array size */ +} Labellist; + + +/* dynamic structures used by the parser */ +typedef struct Dyndata { + struct { /* list of active local variables */ + Vardesc *arr; + int n; + int size; + } actvar; + Labellist gt; /* list of pending gotos */ + Labellist label; /* list of active labels */ +} Dyndata; + + +/* control of blocks */ +struct BlockCnt; /* defined in lparser.c */ + + +/* state needed to generate code for a given function */ +typedef struct FuncState { + Proto *f; /* current function header */ + struct FuncState *prev; /* enclosing function */ + struct LexState *ls; /* lexical state */ + struct BlockCnt *bl; /* chain of current blocks */ + int pc; /* next position to code (equivalent to 'ncode') */ + int lasttarget; /* 'label' of last 'jump label' */ + int jpc; /* list of pending jumps to 'pc' */ + int nk; /* number of elements in 'k' */ + int np; /* number of elements in 'p' */ + int firstlocal; /* index of first local var (in Dyndata array) */ + short nlocvars; /* number of elements in 'f->locvars' */ + lu_byte nactvar; /* number of active local variables */ + lu_byte nups; /* number of upvalues */ + lu_byte freereg; /* first free register */ +} FuncState; + + +LUAI_FUNC LClosure *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff, + Dyndata *dyd, const char *name, int firstchar); + + +#endif diff --git a/deps/rcheevos/test/lua/src/lprefix.h b/deps/rcheevos/test/lua/src/lprefix.h new file mode 100644 index 0000000000..02daa837f5 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lprefix.h @@ -0,0 +1,45 @@ +/* +** $Id: lprefix.h,v 1.2 2014/12/29 16:54:13 roberto Exp $ +** Definitions for Lua code that must come before any other header file +** See Copyright Notice in lua.h +*/ + +#ifndef lprefix_h +#define lprefix_h + + +/* +** Allows POSIX/XSI stuff +*/ +#if !defined(LUA_USE_C89) /* { */ + +#if !defined(_XOPEN_SOURCE) +#define _XOPEN_SOURCE 600 +#elif _XOPEN_SOURCE == 0 +#undef _XOPEN_SOURCE /* use -D_XOPEN_SOURCE=0 to undefine it */ +#endif + +/* +** Allows manipulation of large files in gcc and some other compilers +*/ +#if !defined(LUA_32BITS) && !defined(_FILE_OFFSET_BITS) +#define _LARGEFILE_SOURCE 1 +#define _FILE_OFFSET_BITS 64 +#endif + +#endif /* } */ + + +/* +** Windows stuff +*/ +#if defined(_WIN32) /* { */ + +#if !defined(_CRT_SECURE_NO_WARNINGS) +#define _CRT_SECURE_NO_WARNINGS /* avoid warnings about ISO C functions */ +#endif + +#endif /* } */ + +#endif + diff --git a/deps/rcheevos/test/lua/src/lstate.c b/deps/rcheevos/test/lua/src/lstate.c new file mode 100644 index 0000000000..9e4c8f0616 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lstate.c @@ -0,0 +1,347 @@ +/* +** $Id: lstate.c,v 2.133 2015/11/13 12:16:51 roberto Exp $ +** Global State +** See Copyright Notice in lua.h +*/ + +#define lstate_c +#define LUA_CORE + +#include "lprefix.h" + + +#include +#include + +#include "lua.h" + +#include "lapi.h" +#include "ldebug.h" +#include "ldo.h" +#include "lfunc.h" +#include "lgc.h" +#include "llex.h" +#include "lmem.h" +#include "lstate.h" +#include "lstring.h" +#include "ltable.h" +#include "ltm.h" + + +#if !defined(LUAI_GCPAUSE) +#define LUAI_GCPAUSE 200 /* 200% */ +#endif + +#if !defined(LUAI_GCMUL) +#define LUAI_GCMUL 200 /* GC runs 'twice the speed' of memory allocation */ +#endif + + +/* +** a macro to help the creation of a unique random seed when a state is +** created; the seed is used to randomize hashes. +*/ +#if !defined(luai_makeseed) +#include +#define luai_makeseed() cast(unsigned int, time(NULL)) +#endif + + + +/* +** thread state + extra space +*/ +typedef struct LX { + lu_byte extrc_[LUA_EXTRASPACE]; + lua_State l; +} LX; + + +/* +** Main thread combines a thread state and the global state +*/ +typedef struct LG { + LX l; + global_State g; +} LG; + + + +#define fromstate(L) (cast(LX *, cast(lu_byte *, (L)) - offsetof(LX, l))) + + +/* +** Compute an initial seed as random as possible. Rely on Address Space +** Layout Randomization (if present) to increase randomness.. +*/ +#define addbuff(b,p,e) \ + { size_t t = cast(size_t, e); \ + memcpy(b + p, &t, sizeof(t)); p += sizeof(t); } + +static unsigned int makeseed (lua_State *L) { + char buff[4 * sizeof(size_t)]; + unsigned int h = luai_makeseed(); + int p = 0; + addbuff(buff, p, L); /* heap variable */ + addbuff(buff, p, &h); /* local variable */ + addbuff(buff, p, luaO_nilobject); /* global variable */ + addbuff(buff, p, &lua_newstate); /* public function */ + lua_assert(p == sizeof(buff)); + return luaS_hash(buff, p, h); +} + + +/* +** set GCdebt to a new value keeping the value (totalbytes + GCdebt) +** invariant (and avoiding underflows in 'totalbytes') +*/ +void luaE_setdebt (global_State *g, l_mem debt) { + l_mem tb = gettotalbytes(g); + lua_assert(tb > 0); + if (debt < tb - MAX_LMEM) + debt = tb - MAX_LMEM; /* will make 'totalbytes == MAX_LMEM' */ + g->totalbytes = tb - debt; + g->GCdebt = debt; +} + + +CallInfo *luaE_extendCI (lua_State *L) { + CallInfo *ci = luaM_new(L, CallInfo); + lua_assert(L->ci->next == NULL); + L->ci->next = ci; + ci->previous = L->ci; + ci->next = NULL; + L->nci++; + return ci; +} + + +/* +** free all CallInfo structures not in use by a thread +*/ +void luaE_freeCI (lua_State *L) { + CallInfo *ci = L->ci; + CallInfo *next = ci->next; + ci->next = NULL; + while ((ci = next) != NULL) { + next = ci->next; + luaM_free(L, ci); + L->nci--; + } +} + + +/* +** free half of the CallInfo structures not in use by a thread +*/ +void luaE_shrinkCI (lua_State *L) { + CallInfo *ci = L->ci; + CallInfo *next2; /* next's next */ + /* while there are two nexts */ + while (ci->next != NULL && (next2 = ci->next->next) != NULL) { + luaM_free(L, ci->next); /* free next */ + L->nci--; + ci->next = next2; /* remove 'next' from the list */ + next2->previous = ci; + ci = next2; /* keep next's next */ + } +} + + +static void stack_init (lua_State *L1, lua_State *L) { + int i; CallInfo *ci; + /* initialize stack array */ + L1->stack = luaM_newvector(L, BASIC_STACK_SIZE, TValue); + L1->stacksize = BASIC_STACK_SIZE; + for (i = 0; i < BASIC_STACK_SIZE; i++) + setnilvalue(L1->stack + i); /* erase new stack */ + L1->top = L1->stack; + L1->stack_last = L1->stack + L1->stacksize - EXTRC_STACK; + /* initialize first ci */ + ci = &L1->base_ci; + ci->next = ci->previous = NULL; + ci->callstatus = 0; + ci->func = L1->top; + setnilvalue(L1->top++); /* 'function' entry for this 'ci' */ + ci->top = L1->top + LUA_MINSTACK; + L1->ci = ci; +} + + +static void freestack (lua_State *L) { + if (L->stack == NULL) + return; /* stack not completely built yet */ + L->ci = &L->base_ci; /* free the entire 'ci' list */ + luaE_freeCI(L); + lua_assert(L->nci == 0); + luaM_freearray(L, L->stack, L->stacksize); /* free stack array */ +} + + +/* +** Create registry table and its predefined values +*/ +static void init_registry (lua_State *L, global_State *g) { + TValue temp; + /* create registry */ + Table *registry = luaH_new(L); + sethvalue(L, &g->l_registry, registry); + luaH_resize(L, registry, LUA_RIDX_LAST, 0); + /* registry[LUA_RIDX_MAINTHREAD] = L */ + setthvalue(L, &temp, L); /* temp = L */ + luaH_setint(L, registry, LUA_RIDX_MAINTHREAD, &temp); + /* registry[LUA_RIDX_GLOBALS] = table of globals */ + sethvalue(L, &temp, luaH_new(L)); /* temp = new table (global table) */ + luaH_setint(L, registry, LUA_RIDX_GLOBALS, &temp); +} + + +/* +** open parts of the state that may cause memory-allocation errors. +** ('g->version' != NULL flags that the state was completely build) +*/ +static void f_luaopen (lua_State *L, void *ud) { + global_State *g = G(L); + UNUSED(ud); + stack_init(L, L); /* init stack */ + init_registry(L, g); + luaS_init(L); + luaT_init(L); + luaX_init(L); + g->gcrunning = 1; /* allow gc */ + g->version = lua_version(NULL); + luai_userstateopen(L); +} + + +/* +** preinitialize a thread with consistent values without allocating +** any memory (to avoid errors) +*/ +static void preinit_thread (lua_State *L, global_State *g) { + G(L) = g; + L->stack = NULL; + L->ci = NULL; + L->nci = 0; + L->stacksize = 0; + L->twups = L; /* thread has no upvalues */ + L->errorJmp = NULL; + L->nCcalls = 0; + L->hook = NULL; + L->hookmask = 0; + L->basehookcount = 0; + L->allowhook = 1; + resethookcount(L); + L->openupval = NULL; + L->nny = 1; + L->status = LUA_OK; + L->errfunc = 0; +} + + +static void close_state (lua_State *L) { + global_State *g = G(L); + luaF_close(L, L->stack); /* close all upvalues for this thread */ + luaC_freeallobjects(L); /* collect all objects */ + if (g->version) /* closing a fully built state? */ + luai_userstateclose(L); + luaM_freearray(L, G(L)->strt.hash, G(L)->strt.size); + freestack(L); + lua_assert(gettotalbytes(g) == sizeof(LG)); + (*g->frealloc)(g->ud, fromstate(L), sizeof(LG), 0); /* free main block */ +} + + +LUA_API lua_State *lua_newthread (lua_State *L) { + global_State *g = G(L); + lua_State *L1; + lua_lock(L); + luaC_checkGC(L); + /* create new thread */ + L1 = &cast(LX *, luaM_newobject(L, LUA_TTHREAD, sizeof(LX)))->l; + L1->marked = luaC_white(g); + L1->tt = LUA_TTHREAD; + /* link it on list 'allgc' */ + L1->next = g->allgc; + g->allgc = obj2gco(L1); + /* anchor it on L stack */ + setthvalue(L, L->top, L1); + api_incr_top(L); + preinit_thread(L1, g); + L1->hookmask = L->hookmask; + L1->basehookcount = L->basehookcount; + L1->hook = L->hook; + resethookcount(L1); + /* initialize L1 extra space */ + memcpy(lua_getextraspace(L1), lua_getextraspace(g->mainthread), + LUA_EXTRASPACE); + luai_userstatethread(L, L1); + stack_init(L1, L); /* init stack */ + lua_unlock(L); + return L1; +} + + +void luaE_freethread (lua_State *L, lua_State *L1) { + LX *l = fromstate(L1); + luaF_close(L1, L1->stack); /* close all upvalues for this thread */ + lua_assert(L1->openupval == NULL); + luai_userstatefree(L, L1); + freestack(L1); + luaM_free(L, l); +} + + +LUA_API lua_State *lua_newstate (lua_Alloc f, void *ud) { + int i; + lua_State *L; + global_State *g; + LG *l = cast(LG *, (*f)(ud, NULL, LUA_TTHREAD, sizeof(LG))); + if (l == NULL) return NULL; + L = &l->l.l; + g = &l->g; + L->next = NULL; + L->tt = LUA_TTHREAD; + g->currentwhite = bitmask(WHITE0BIT); + L->marked = luaC_white(g); + preinit_thread(L, g); + g->frealloc = f; + g->ud = ud; + g->mainthread = L; + g->seed = makeseed(L); + g->gcrunning = 0; /* no GC while building state */ + g->GCestimate = 0; + g->strt.size = g->strt.nuse = 0; + g->strt.hash = NULL; + setnilvalue(&g->l_registry); + g->panic = NULL; + g->version = NULL; + g->gcstate = GCSpause; + g->gckind = KGC_NORMAL; + g->allgc = g->finobj = g->tobefnz = g->fixedgc = NULL; + g->sweepgc = NULL; + g->gray = g->grayagain = NULL; + g->weak = g->ephemeron = g->allweak = NULL; + g->twups = NULL; + g->totalbytes = sizeof(LG); + g->GCdebt = 0; + g->gcfinnum = 0; + g->gcpause = LUAI_GCPAUSE; + g->gcstepmul = LUAI_GCMUL; + for (i=0; i < LUA_NUMTAGS; i++) g->mt[i] = NULL; + if (luaD_rawrunprotected(L, f_luaopen, NULL) != LUA_OK) { + /* memory allocation error: free partial state */ + close_state(L); + L = NULL; + } + return L; +} + + +LUA_API void lua_close (lua_State *L) { + L = G(L)->mainthread; /* only the main thread can be closed */ + lua_lock(L); + close_state(L); +} + + diff --git a/deps/rcheevos/test/lua/src/lstate.h b/deps/rcheevos/test/lua/src/lstate.h new file mode 100644 index 0000000000..ed621c4dfa --- /dev/null +++ b/deps/rcheevos/test/lua/src/lstate.h @@ -0,0 +1,235 @@ +/* +** $Id: lstate.h,v 2.133 2016/12/22 13:08:50 roberto Exp $ +** Global State +** See Copyright Notice in lua.h +*/ + +#ifndef lstate_h +#define lstate_h + +#include "lua.h" + +#include "lobject.h" +#include "ltm.h" +#include "lzio.h" + + +/* + +** Some notes about garbage-collected objects: All objects in Lua must +** be kept somehow accessible until being freed, so all objects always +** belong to one (and only one) of these lists, using field 'next' of +** the 'CommonHeader' for the link: +** +** 'allgc': all objects not marked for finalization; +** 'finobj': all objects marked for finalization; +** 'tobefnz': all objects ready to be finalized; +** 'fixedgc': all objects that are not to be collected (currently +** only small strings, such as reserved words). + +*/ + + +struct lua_longjmp; /* defined in ldo.c */ + + +/* +** Atomic type (relative to signals) to better ensure that 'lua_sethook' +** is thread safe +*/ +#if !defined(l_signalT) +#include +#define l_signalT sig_atomic_t +#endif + + +/* extra stack space to handle TM calls and some other extras */ +#define EXTRC_STACK 5 + + +#define BASIC_STACK_SIZE (2*LUA_MINSTACK) + + +/* kinds of Garbage Collection */ +#define KGC_NORMAL 0 +#define KGC_EMERGENCY 1 /* gc was forced by an allocation failure */ + + +typedef struct stringtable { + TString **hash; + int nuse; /* number of elements */ + int size; +} stringtable; + + +/* +** Information about a call. +** When a thread yields, 'func' is adjusted to pretend that the +** top function has only the yielded values in its stack; in that +** case, the actual 'func' value is saved in field 'extra'. +** When a function calls another with a continuation, 'extra' keeps +** the function index so that, in case of errors, the continuation +** function can be called with the correct top. +*/ +typedef struct CallInfo { + StkId func; /* function index in the stack */ + StkId top; /* top for this function */ + struct CallInfo *previous, *next; /* dynamic call link */ + union { + struct { /* only for Lua functions */ + StkId base; /* base for this function */ + const Instruction *savedpc; + } l; + struct { /* only for C functions */ + lua_KFunction k; /* continuation in case of yields */ + ptrdiff_t old_errfunc; + lua_KContext ctx; /* context info. in case of yields */ + } c; + } u; + ptrdiff_t extra; + short nresults; /* expected number of results from this function */ + unsigned short callstatus; +} CallInfo; + + +/* +** Bits in CallInfo status +*/ +#define CIST_OAH (1<<0) /* original value of 'allowhook' */ +#define CIST_LUA (1<<1) /* call is running a Lua function */ +#define CIST_HOOKED (1<<2) /* call is running a debug hook */ +#define CIST_FRESH (1<<3) /* call is running on a fresh invocation + of luaV_execute */ +#define CIST_YPCALL (1<<4) /* call is a yieldable protected call */ +#define CIST_TAIL (1<<5) /* call was tail called */ +#define CIST_HOOKYIELD (1<<6) /* last hook called yielded */ +#define CIST_LEQ (1<<7) /* using __lt for __le */ +#define CIST_FIN (1<<8) /* call is running a finalizer */ + +#define isLua(ci) ((ci)->callstatus & CIST_LUA) + +/* assume that CIST_OAH has offset 0 and that 'v' is strictly 0/1 */ +#define setoah(st,v) ((st) = ((st) & ~CIST_OAH) | (v)) +#define getoah(st) ((st) & CIST_OAH) + + +/* +** 'global state', shared by all threads of this state +*/ +typedef struct global_State { + lua_Alloc frealloc; /* function to reallocate memory */ + void *ud; /* auxiliary data to 'frealloc' */ + l_mem totalbytes; /* number of bytes currently allocated - GCdebt */ + l_mem GCdebt; /* bytes allocated not yet compensated by the collector */ + lu_mem GCmemtrav; /* memory traversed by the GC */ + lu_mem GCestimate; /* an estimate of the non-garbage memory in use */ + stringtable strt; /* hash table for strings */ + TValue l_registry; + unsigned int seed; /* randomized seed for hashes */ + lu_byte currentwhite; + lu_byte gcstate; /* state of garbage collector */ + lu_byte gckind; /* kind of GC running */ + lu_byte gcrunning; /* true if GC is running */ + GCObject *allgc; /* list of all collectable objects */ + GCObject **sweepgc; /* current position of sweep in list */ + GCObject *finobj; /* list of collectable objects with finalizers */ + GCObject *gray; /* list of gray objects */ + GCObject *grayagain; /* list of objects to be traversed atomically */ + GCObject *weak; /* list of tables with weak values */ + GCObject *ephemeron; /* list of ephemeron tables (weak keys) */ + GCObject *allweak; /* list of all-weak tables */ + GCObject *tobefnz; /* list of userdata to be GC */ + GCObject *fixedgc; /* list of objects not to be collected */ + struct lua_State *twups; /* list of threads with open upvalues */ + unsigned int gcfinnum; /* number of finalizers to call in each GC step */ + int gcpause; /* size of pause between successive GCs */ + int gcstepmul; /* GC 'granularity' */ + lua_CFunction panic; /* to be called in unprotected errors */ + struct lua_State *mainthread; + const lua_Number *version; /* pointer to version number */ + TString *memerrmsg; /* memory-error message */ + TString *tmname[TM_N]; /* array with tag-method names */ + struct Table *mt[LUA_NUMTAGS]; /* metatables for basic types */ + TString *strcache[STRCACHE_N][STRCACHE_M]; /* cache for strings in API */ +} global_State; + + +/* +** 'per thread' state +*/ +struct lua_State { + CommonHeader; + unsigned short nci; /* number of items in 'ci' list */ + lu_byte status; + StkId top; /* first free slot in the stack */ + global_State *l_G; + CallInfo *ci; /* call info for current function */ + const Instruction *oldpc; /* last pc traced */ + StkId stack_last; /* last free slot in the stack */ + StkId stack; /* stack base */ + UpVal *openupval; /* list of open upvalues in this stack */ + GCObject *gclist; + struct lua_State *twups; /* list of threads with open upvalues */ + struct lua_longjmp *errorJmp; /* current error recover point */ + CallInfo base_ci; /* CallInfo for first level (C calling Lua) */ + volatile lua_Hook hook; + ptrdiff_t errfunc; /* current error handling function (stack index) */ + int stacksize; + int basehookcount; + int hookcount; + unsigned short nny; /* number of non-yieldable calls in stack */ + unsigned short nCcalls; /* number of nested C calls */ + l_signalT hookmask; + lu_byte allowhook; +}; + + +#define G(L) (L->l_G) + + +/* +** Union of all collectable objects (only for conversions) +*/ +union GCUnion { + GCObject gc; /* common header */ + struct TString ts; + struct Udata u; + union Closure cl; + struct Table h; + struct Proto p; + struct lua_State th; /* thread */ +}; + + +#define cast_u(o) cast(union GCUnion *, (o)) + +/* macros to convert a GCObject into a specific value */ +#define gco2ts(o) \ + check_exp(novariant((o)->tt) == LUA_TSTRING, &((cast_u(o))->ts)) +#define gco2u(o) check_exp((o)->tt == LUA_TUSERDATA, &((cast_u(o))->u)) +#define gco2lcl(o) check_exp((o)->tt == LUA_TLCL, &((cast_u(o))->cl.l)) +#define gco2ccl(o) check_exp((o)->tt == LUA_TCCL, &((cast_u(o))->cl.c)) +#define gco2cl(o) \ + check_exp(novariant((o)->tt) == LUA_TFUNCTION, &((cast_u(o))->cl)) +#define gco2t(o) check_exp((o)->tt == LUA_TTABLE, &((cast_u(o))->h)) +#define gco2p(o) check_exp((o)->tt == LUA_TPROTO, &((cast_u(o))->p)) +#define gco2th(o) check_exp((o)->tt == LUA_TTHREAD, &((cast_u(o))->th)) + + +/* macro to convert a Lua object into a GCObject */ +#define obj2gco(v) \ + check_exp(novariant((v)->tt) < LUA_TDEADKEY, (&(cast_u(v)->gc))) + + +/* actual number of total bytes allocated */ +#define gettotalbytes(g) cast(lu_mem, (g)->totalbytes + (g)->GCdebt) + +LUAI_FUNC void luaE_setdebt (global_State *g, l_mem debt); +LUAI_FUNC void luaE_freethread (lua_State *L, lua_State *L1); +LUAI_FUNC CallInfo *luaE_extendCI (lua_State *L); +LUAI_FUNC void luaE_freeCI (lua_State *L); +LUAI_FUNC void luaE_shrinkCI (lua_State *L); + + +#endif + diff --git a/deps/rcheevos/test/lua/src/lstring.c b/deps/rcheevos/test/lua/src/lstring.c new file mode 100644 index 0000000000..9351766fd6 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lstring.c @@ -0,0 +1,248 @@ +/* +** $Id: lstring.c,v 2.56 2015/11/23 11:32:51 roberto Exp $ +** String table (keeps all strings handled by Lua) +** See Copyright Notice in lua.h +*/ + +#define lstring_c +#define LUA_CORE + +#include "lprefix.h" + + +#include + +#include "lua.h" + +#include "ldebug.h" +#include "ldo.h" +#include "lmem.h" +#include "lobject.h" +#include "lstate.h" +#include "lstring.h" + + +#define MEMERRMSG "not enough memory" + + +/* +** Lua will use at most ~(2^LUAI_HASHLIMIT) bytes from a string to +** compute its hash +*/ +#if !defined(LUAI_HASHLIMIT) +#define LUAI_HASHLIMIT 5 +#endif + + +/* +** equality for long strings +*/ +int luaS_eqlngstr (TString *a, TString *b) { + size_t len = a->u.lnglen; + lua_assert(a->tt == LUA_TLNGSTR && b->tt == LUA_TLNGSTR); + return (a == b) || /* same instance or... */ + ((len == b->u.lnglen) && /* equal length and ... */ + (memcmp(getstr(a), getstr(b), len) == 0)); /* equal contents */ +} + + +unsigned int luaS_hash (const char *str, size_t l, unsigned int seed) { + unsigned int h = seed ^ cast(unsigned int, l); + size_t step = (l >> LUAI_HASHLIMIT) + 1; + for (; l >= step; l -= step) + h ^= ((h<<5) + (h>>2) + cast_byte(str[l - 1])); + return h; +} + + +unsigned int luaS_hashlongstr (TString *ts) { + lua_assert(ts->tt == LUA_TLNGSTR); + if (ts->extra == 0) { /* no hash? */ + ts->hash = luaS_hash(getstr(ts), ts->u.lnglen, ts->hash); + ts->extra = 1; /* now it has its hash */ + } + return ts->hash; +} + + +/* +** resizes the string table +*/ +void luaS_resize (lua_State *L, int newsize) { + int i; + stringtable *tb = &G(L)->strt; + if (newsize > tb->size) { /* grow table if needed */ + luaM_reallocvector(L, tb->hash, tb->size, newsize, TString *); + for (i = tb->size; i < newsize; i++) + tb->hash[i] = NULL; + } + for (i = 0; i < tb->size; i++) { /* rehash */ + TString *p = tb->hash[i]; + tb->hash[i] = NULL; + while (p) { /* for each node in the list */ + TString *hnext = p->u.hnext; /* save next */ + unsigned int h = lmod(p->hash, newsize); /* new position */ + p->u.hnext = tb->hash[h]; /* chain it */ + tb->hash[h] = p; + p = hnext; + } + } + if (newsize < tb->size) { /* shrink table if needed */ + /* vanishing slice should be empty */ + lua_assert(tb->hash[newsize] == NULL && tb->hash[tb->size - 1] == NULL); + luaM_reallocvector(L, tb->hash, tb->size, newsize, TString *); + } + tb->size = newsize; +} + + +/* +** Clear API string cache. (Entries cannot be empty, so fill them with +** a non-collectable string.) +*/ +void luaS_clearcache (global_State *g) { + int i, j; + for (i = 0; i < STRCACHE_N; i++) + for (j = 0; j < STRCACHE_M; j++) { + if (iswhite(g->strcache[i][j])) /* will entry be collected? */ + g->strcache[i][j] = g->memerrmsg; /* replace it with something fixed */ + } +} + + +/* +** Initialize the string table and the string cache +*/ +void luaS_init (lua_State *L) { + global_State *g = G(L); + int i, j; + luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */ + /* pre-create memory-error message */ + g->memerrmsg = luaS_newliteral(L, MEMERRMSG); + luaC_fix(L, obj2gco(g->memerrmsg)); /* it should never be collected */ + for (i = 0; i < STRCACHE_N; i++) /* fill cache with valid strings */ + for (j = 0; j < STRCACHE_M; j++) + g->strcache[i][j] = g->memerrmsg; +} + + + +/* +** creates a new string object +*/ +static TString *createstrobj (lua_State *L, size_t l, int tag, unsigned int h) { + TString *ts; + GCObject *o; + size_t totalsize; /* total size of TString object */ + totalsize = sizelstring(l); + o = luaC_newobj(L, tag, totalsize); + ts = gco2ts(o); + ts->hash = h; + ts->extra = 0; + getstr(ts)[l] = '\0'; /* ending 0 */ + return ts; +} + + +TString *luaS_createlngstrobj (lua_State *L, size_t l) { + TString *ts = createstrobj(L, l, LUA_TLNGSTR, G(L)->seed); + ts->u.lnglen = l; + return ts; +} + + +void luaS_remove (lua_State *L, TString *ts) { + stringtable *tb = &G(L)->strt; + TString **p = &tb->hash[lmod(ts->hash, tb->size)]; + while (*p != ts) /* find previous element */ + p = &(*p)->u.hnext; + *p = (*p)->u.hnext; /* remove element from its list */ + tb->nuse--; +} + + +/* +** checks whether short string exists and reuses it or creates a new one +*/ +static TString *internshrstr (lua_State *L, const char *str, size_t l) { + TString *ts; + global_State *g = G(L); + unsigned int h = luaS_hash(str, l, g->seed); + TString **list = &g->strt.hash[lmod(h, g->strt.size)]; + lua_assert(str != NULL); /* otherwise 'memcmp'/'memcpy' are undefined */ + for (ts = *list; ts != NULL; ts = ts->u.hnext) { + if (l == ts->shrlen && + (memcmp(str, getstr(ts), l * sizeof(char)) == 0)) { + /* found! */ + if (isdead(g, ts)) /* dead (but not collected yet)? */ + changewhite(ts); /* resurrect it */ + return ts; + } + } + if (g->strt.nuse >= g->strt.size && g->strt.size <= MAX_INT/2) { + luaS_resize(L, g->strt.size * 2); + list = &g->strt.hash[lmod(h, g->strt.size)]; /* recompute with new size */ + } + ts = createstrobj(L, l, LUA_TSHRSTR, h); + memcpy(getstr(ts), str, l * sizeof(char)); + ts->shrlen = cast_byte(l); + ts->u.hnext = *list; + *list = ts; + g->strt.nuse++; + return ts; +} + + +/* +** new string (with explicit length) +*/ +TString *luaS_newlstr (lua_State *L, const char *str, size_t l) { + if (l <= LUAI_MAXSHORTLEN) /* short string? */ + return internshrstr(L, str, l); + else { + TString *ts; + if (l >= (MAX_SIZE - sizeof(TString))/sizeof(char)) + luaM_toobig(L); + ts = luaS_createlngstrobj(L, l); + memcpy(getstr(ts), str, l * sizeof(char)); + return ts; + } +} + + +/* +** Create or reuse a zero-terminated string, first checking in the +** cache (using the string address as a key). The cache can contain +** only zero-terminated strings, so it is safe to use 'strcmp' to +** check hits. +*/ +TString *luaS_new (lua_State *L, const char *str) { + unsigned int i = point2uint(str) % STRCACHE_N; /* hash */ + int j; + TString **p = G(L)->strcache[i]; + for (j = 0; j < STRCACHE_M; j++) { + if (strcmp(str, getstr(p[j])) == 0) /* hit? */ + return p[j]; /* that is it */ + } + /* normal route */ + for (j = STRCACHE_M - 1; j > 0; j--) + p[j] = p[j - 1]; /* move out last element */ + /* new element is first in the list */ + p[0] = luaS_newlstr(L, str, strlen(str)); + return p[0]; +} + + +Udata *luaS_newudata (lua_State *L, size_t s) { + Udata *u; + GCObject *o; + if (s > MAX_SIZE - sizeof(Udata)) + luaM_toobig(L); + o = luaC_newobj(L, LUA_TUSERDATA, sizeludata(s)); + u = gco2u(o); + u->len = s; + u->metatable = NULL; + setuservalue(L, u, luaO_nilobject); + return u; +} + diff --git a/deps/rcheevos/test/lua/src/lstring.h b/deps/rcheevos/test/lua/src/lstring.h new file mode 100644 index 0000000000..27efd20772 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lstring.h @@ -0,0 +1,49 @@ +/* +** $Id: lstring.h,v 1.61 2015/11/03 15:36:01 roberto Exp $ +** String table (keep all strings handled by Lua) +** See Copyright Notice in lua.h +*/ + +#ifndef lstring_h +#define lstring_h + +#include "lgc.h" +#include "lobject.h" +#include "lstate.h" + + +#define sizelstring(l) (sizeof(union UTString) + ((l) + 1) * sizeof(char)) + +#define sizeludata(l) (sizeof(union UUdata) + (l)) +#define sizeudata(u) sizeludata((u)->len) + +#define luaS_newliteral(L, s) (luaS_newlstr(L, "" s, \ + (sizeof(s)/sizeof(char))-1)) + + +/* +** test whether a string is a reserved word +*/ +#define isreserved(s) ((s)->tt == LUA_TSHRSTR && (s)->extra > 0) + + +/* +** equality for short strings, which are always internalized +*/ +#define eqshrstr(a,b) check_exp((a)->tt == LUA_TSHRSTR, (a) == (b)) + + +LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed); +LUAI_FUNC unsigned int luaS_hashlongstr (TString *ts); +LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b); +LUAI_FUNC void luaS_resize (lua_State *L, int newsize); +LUAI_FUNC void luaS_clearcache (global_State *g); +LUAI_FUNC void luaS_init (lua_State *L); +LUAI_FUNC void luaS_remove (lua_State *L, TString *ts); +LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s); +LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l); +LUAI_FUNC TString *luaS_new (lua_State *L, const char *str); +LUAI_FUNC TString *luaS_createlngstrobj (lua_State *L, size_t l); + + +#endif diff --git a/deps/rcheevos/test/lua/src/lstrlib.c b/deps/rcheevos/test/lua/src/lstrlib.c new file mode 100644 index 0000000000..c7aa755fab --- /dev/null +++ b/deps/rcheevos/test/lua/src/lstrlib.c @@ -0,0 +1,1584 @@ +/* +** $Id: lstrlib.c,v 1.254 2016/12/22 13:08:50 roberto Exp $ +** Standard library for string operations and pattern-matching +** See Copyright Notice in lua.h +*/ + +#define lstrlib_c +#define LUA_LIB + +#include "lprefix.h" + + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "lua.h" + +#include "lauxlib.h" +#include "lualib.h" + + +/* +** maximum number of captures that a pattern can do during +** pattern-matching. This limit is arbitrary, but must fit in +** an unsigned char. +*/ +#if !defined(LUA_MAXCAPTURES) +#define LUA_MAXCAPTURES 32 +#endif + + +/* macro to 'unsign' a character */ +#define uchar(c) ((unsigned char)(c)) + + +/* +** Some sizes are better limited to fit in 'int', but must also fit in +** 'size_t'. (We assume that 'lua_Integer' cannot be smaller than 'int'.) +*/ +#define MAX_SIZET ((size_t)(~(size_t)0)) + +#define MAXSIZE \ + (sizeof(size_t) < sizeof(int) ? MAX_SIZET : (size_t)(INT_MAX)) + + + + +static int str_len (lua_State *L) { + size_t l; + luaL_checklstring(L, 1, &l); + lua_pushinteger(L, (lua_Integer)l); + return 1; +} + + +/* translate a relative string position: negative means back from end */ +static lua_Integer posrelat (lua_Integer pos, size_t len) { + if (pos >= 0) return pos; + else if (0u - (size_t)pos > len) return 0; + else return (lua_Integer)len + pos + 1; +} + + +static int str_sub (lua_State *L) { + size_t l; + const char *s = luaL_checklstring(L, 1, &l); + lua_Integer start = posrelat(luaL_checkinteger(L, 2), l); + lua_Integer end = posrelat(luaL_optinteger(L, 3, -1), l); + if (start < 1) start = 1; + if (end > (lua_Integer)l) end = l; + if (start <= end) + lua_pushlstring(L, s + start - 1, (size_t)(end - start) + 1); + else lua_pushliteral(L, ""); + return 1; +} + + +static int str_reverse (lua_State *L) { + size_t l, i; + luaL_Buffer b; + const char *s = luaL_checklstring(L, 1, &l); + char *p = luaL_buffinitsize(L, &b, l); + for (i = 0; i < l; i++) + p[i] = s[l - i - 1]; + luaL_pushresultsize(&b, l); + return 1; +} + + +static int str_lower (lua_State *L) { + size_t l; + size_t i; + luaL_Buffer b; + const char *s = luaL_checklstring(L, 1, &l); + char *p = luaL_buffinitsize(L, &b, l); + for (i=0; i MAXSIZE / n) /* may overflow? */ + return luaL_error(L, "resulting string too large"); + else { + size_t totallen = (size_t)n * l + (size_t)(n - 1) * lsep; + luaL_Buffer b; + char *p = luaL_buffinitsize(L, &b, totallen); + while (n-- > 1) { /* first n-1 copies (followed by separator) */ + memcpy(p, s, l * sizeof(char)); p += l; + if (lsep > 0) { /* empty 'memcpy' is not that cheap */ + memcpy(p, sep, lsep * sizeof(char)); + p += lsep; + } + } + memcpy(p, s, l * sizeof(char)); /* last copy (not followed by separator) */ + luaL_pushresultsize(&b, totallen); + } + return 1; +} + + +static int str_byte (lua_State *L) { + size_t l; + const char *s = luaL_checklstring(L, 1, &l); + lua_Integer posi = posrelat(luaL_optinteger(L, 2, 1), l); + lua_Integer pose = posrelat(luaL_optinteger(L, 3, posi), l); + int n, i; + if (posi < 1) posi = 1; + if (pose > (lua_Integer)l) pose = l; + if (posi > pose) return 0; /* empty interval; return no values */ + if (pose - posi >= INT_MAX) /* arithmetic overflow? */ + return luaL_error(L, "string slice too long"); + n = (int)(pose - posi) + 1; + luaL_checkstack(L, n, "string slice too long"); + for (i=0; i= ms->level || ms->capture[l].len == CAP_UNFINISHED) + return luaL_error(ms->L, "invalid capture index %%%d", l + 1); + return l; +} + + +static int capture_to_close (MatchState *ms) { + int level = ms->level; + for (level--; level>=0; level--) + if (ms->capture[level].len == CAP_UNFINISHED) return level; + return luaL_error(ms->L, "invalid pattern capture"); +} + + +static const char *classend (MatchState *ms, const char *p) { + switch (*p++) { + case L_ESC: { + if (p == ms->p_end) + luaL_error(ms->L, "malformed pattern (ends with '%%')"); + return p+1; + } + case '[': { + if (*p == '^') p++; + do { /* look for a ']' */ + if (p == ms->p_end) + luaL_error(ms->L, "malformed pattern (missing ']')"); + if (*(p++) == L_ESC && p < ms->p_end) + p++; /* skip escapes (e.g. '%]') */ + } while (*p != ']'); + return p+1; + } + default: { + return p; + } + } +} + + +static int match_class (int c, int cl) { + int res; + switch (tolower(cl)) { + case 'a' : res = isalpha(c); break; + case 'c' : res = iscntrl(c); break; + case 'd' : res = isdigit(c); break; + case 'g' : res = isgraph(c); break; + case 'l' : res = islower(c); break; + case 'p' : res = ispunct(c); break; + case 's' : res = isspace(c); break; + case 'u' : res = isupper(c); break; + case 'w' : res = isalnum(c); break; + case 'x' : res = isxdigit(c); break; + case 'z' : res = (c == 0); break; /* deprecated option */ + default: return (cl == c); + } + return (islower(cl) ? res : !res); +} + + +static int matchbracketclass (int c, const char *p, const char *ec) { + int sig = 1; + if (*(p+1) == '^') { + sig = 0; + p++; /* skip the '^' */ + } + while (++p < ec) { + if (*p == L_ESC) { + p++; + if (match_class(c, uchar(*p))) + return sig; + } + else if ((*(p+1) == '-') && (p+2 < ec)) { + p+=2; + if (uchar(*(p-2)) <= c && c <= uchar(*p)) + return sig; + } + else if (uchar(*p) == c) return sig; + } + return !sig; +} + + +static int singlematch (MatchState *ms, const char *s, const char *p, + const char *ep) { + if (s >= ms->src_end) + return 0; + else { + int c = uchar(*s); + switch (*p) { + case '.': return 1; /* matches any char */ + case L_ESC: return match_class(c, uchar(*(p+1))); + case '[': return matchbracketclass(c, p, ep-1); + default: return (uchar(*p) == c); + } + } +} + + +static const char *matchbalance (MatchState *ms, const char *s, + const char *p) { + if (p >= ms->p_end - 1) + luaL_error(ms->L, "malformed pattern (missing arguments to '%%b')"); + if (*s != *p) return NULL; + else { + int b = *p; + int e = *(p+1); + int cont = 1; + while (++s < ms->src_end) { + if (*s == e) { + if (--cont == 0) return s+1; + } + else if (*s == b) cont++; + } + } + return NULL; /* string ends out of balance */ +} + + +static const char *max_expand (MatchState *ms, const char *s, + const char *p, const char *ep) { + ptrdiff_t i = 0; /* counts maximum expand for item */ + while (singlematch(ms, s + i, p, ep)) + i++; + /* keeps trying to match with the maximum repetitions */ + while (i>=0) { + const char *res = match(ms, (s+i), ep+1); + if (res) return res; + i--; /* else didn't match; reduce 1 repetition to try again */ + } + return NULL; +} + + +static const char *min_expand (MatchState *ms, const char *s, + const char *p, const char *ep) { + for (;;) { + const char *res = match(ms, s, ep+1); + if (res != NULL) + return res; + else if (singlematch(ms, s, p, ep)) + s++; /* try with one more repetition */ + else return NULL; + } +} + + +static const char *start_capture (MatchState *ms, const char *s, + const char *p, int what) { + const char *res; + int level = ms->level; + if (level >= LUA_MAXCAPTURES) luaL_error(ms->L, "too many captures"); + ms->capture[level].init = s; + ms->capture[level].len = what; + ms->level = level+1; + if ((res=match(ms, s, p)) == NULL) /* match failed? */ + ms->level--; /* undo capture */ + return res; +} + + +static const char *end_capture (MatchState *ms, const char *s, + const char *p) { + int l = capture_to_close(ms); + const char *res; + ms->capture[l].len = s - ms->capture[l].init; /* close capture */ + if ((res = match(ms, s, p)) == NULL) /* match failed? */ + ms->capture[l].len = CAP_UNFINISHED; /* undo capture */ + return res; +} + + +static const char *match_capture (MatchState *ms, const char *s, int l) { + size_t len; + l = check_capture(ms, l); + len = ms->capture[l].len; + if ((size_t)(ms->src_end-s) >= len && + memcmp(ms->capture[l].init, s, len) == 0) + return s+len; + else return NULL; +} + + +static const char *match (MatchState *ms, const char *s, const char *p) { + if (ms->matchdepth-- == 0) + luaL_error(ms->L, "pattern too complex"); + init: /* using goto's to optimize tail recursion */ + if (p != ms->p_end) { /* end of pattern? */ + switch (*p) { + case '(': { /* start capture */ + if (*(p + 1) == ')') /* position capture? */ + s = start_capture(ms, s, p + 2, CAP_POSITION); + else + s = start_capture(ms, s, p + 1, CAP_UNFINISHED); + break; + } + case ')': { /* end capture */ + s = end_capture(ms, s, p + 1); + break; + } + case '$': { + if ((p + 1) != ms->p_end) /* is the '$' the last char in pattern? */ + goto dflt; /* no; go to default */ + s = (s == ms->src_end) ? s : NULL; /* check end of string */ + break; + } + case L_ESC: { /* escaped sequences not in the format class[*+?-]? */ + switch (*(p + 1)) { + case 'b': { /* balanced string? */ + s = matchbalance(ms, s, p + 2); + if (s != NULL) { + p += 4; goto init; /* return match(ms, s, p + 4); */ + } /* else fail (s == NULL) */ + break; + } + case 'f': { /* frontier? */ + const char *ep; char previous; + p += 2; + if (*p != '[') + luaL_error(ms->L, "missing '[' after '%%f' in pattern"); + ep = classend(ms, p); /* points to what is next */ + previous = (s == ms->src_init) ? '\0' : *(s - 1); + if (!matchbracketclass(uchar(previous), p, ep - 1) && + matchbracketclass(uchar(*s), p, ep - 1)) { + p = ep; goto init; /* return match(ms, s, ep); */ + } + s = NULL; /* match failed */ + break; + } + case '0': case '1': case '2': case '3': + case '4': case '5': case '6': case '7': + case '8': case '9': { /* capture results (%0-%9)? */ + s = match_capture(ms, s, uchar(*(p + 1))); + if (s != NULL) { + p += 2; goto init; /* return match(ms, s, p + 2) */ + } + break; + } + default: goto dflt; + } + break; + } + default: dflt: { /* pattern class plus optional suffix */ + const char *ep = classend(ms, p); /* points to optional suffix */ + /* does not match at least once? */ + if (!singlematch(ms, s, p, ep)) { + if (*ep == '*' || *ep == '?' || *ep == '-') { /* accept empty? */ + p = ep + 1; goto init; /* return match(ms, s, ep + 1); */ + } + else /* '+' or no suffix */ + s = NULL; /* fail */ + } + else { /* matched once */ + switch (*ep) { /* handle optional suffix */ + case '?': { /* optional */ + const char *res; + if ((res = match(ms, s + 1, ep + 1)) != NULL) + s = res; + else { + p = ep + 1; goto init; /* else return match(ms, s, ep + 1); */ + } + break; + } + case '+': /* 1 or more repetitions */ + s++; /* 1 match already done */ + /* FALLTHROUGH */ + case '*': /* 0 or more repetitions */ + s = max_expand(ms, s, p, ep); + break; + case '-': /* 0 or more repetitions (minimum) */ + s = min_expand(ms, s, p, ep); + break; + default: /* no suffix */ + s++; p = ep; goto init; /* return match(ms, s + 1, ep); */ + } + } + break; + } + } + } + ms->matchdepth++; + return s; +} + + + +static const char *lmemfind (const char *s1, size_t l1, + const char *s2, size_t l2) { + if (l2 == 0) return s1; /* empty strings are everywhere */ + else if (l2 > l1) return NULL; /* avoids a negative 'l1' */ + else { + const char *init; /* to search for a '*s2' inside 's1' */ + l2--; /* 1st char will be checked by 'memchr' */ + l1 = l1-l2; /* 's2' cannot be found after that */ + while (l1 > 0 && (init = (const char *)memchr(s1, *s2, l1)) != NULL) { + init++; /* 1st char is already checked */ + if (memcmp(init, s2+1, l2) == 0) + return init-1; + else { /* correct 'l1' and 's1' to try again */ + l1 -= init-s1; + s1 = init; + } + } + return NULL; /* not found */ + } +} + + +static void push_onecapture (MatchState *ms, int i, const char *s, + const char *e) { + if (i >= ms->level) { + if (i == 0) /* ms->level == 0, too */ + lua_pushlstring(ms->L, s, e - s); /* add whole match */ + else + luaL_error(ms->L, "invalid capture index %%%d", i + 1); + } + else { + ptrdiff_t l = ms->capture[i].len; + if (l == CAP_UNFINISHED) luaL_error(ms->L, "unfinished capture"); + if (l == CAP_POSITION) + lua_pushinteger(ms->L, (ms->capture[i].init - ms->src_init) + 1); + else + lua_pushlstring(ms->L, ms->capture[i].init, l); + } +} + + +static int push_captures (MatchState *ms, const char *s, const char *e) { + int i; + int nlevels = (ms->level == 0 && s) ? 1 : ms->level; + luaL_checkstack(ms->L, nlevels, "too many captures"); + for (i = 0; i < nlevels; i++) + push_onecapture(ms, i, s, e); + return nlevels; /* number of strings pushed */ +} + + +/* check whether pattern has no special characters */ +static int nospecials (const char *p, size_t l) { + size_t upto = 0; + do { + if (strpbrk(p + upto, SPECIALS)) + return 0; /* pattern has a special character */ + upto += strlen(p + upto) + 1; /* may have more after \0 */ + } while (upto <= l); + return 1; /* no special chars found */ +} + + +static void prepstate (MatchState *ms, lua_State *L, + const char *s, size_t ls, const char *p, size_t lp) { + ms->L = L; + ms->matchdepth = MAXCCALLS; + ms->src_init = s; + ms->src_end = s + ls; + ms->p_end = p + lp; +} + + +static void reprepstate (MatchState *ms) { + ms->level = 0; + lua_assert(ms->matchdepth == MAXCCALLS); +} + + +static int str_find_aux (lua_State *L, int find) { + size_t ls, lp; + const char *s = luaL_checklstring(L, 1, &ls); + const char *p = luaL_checklstring(L, 2, &lp); + lua_Integer init = posrelat(luaL_optinteger(L, 3, 1), ls); + if (init < 1) init = 1; + else if (init > (lua_Integer)ls + 1) { /* start after string's end? */ + lua_pushnil(L); /* cannot find anything */ + return 1; + } + /* explicit request or no special characters? */ + if (find && (lua_toboolean(L, 4) || nospecials(p, lp))) { + /* do a plain search */ + const char *s2 = lmemfind(s + init - 1, ls - (size_t)init + 1, p, lp); + if (s2) { + lua_pushinteger(L, (s2 - s) + 1); + lua_pushinteger(L, (s2 - s) + lp); + return 2; + } + } + else { + MatchState ms; + const char *s1 = s + init - 1; + int anchor = (*p == '^'); + if (anchor) { + p++; lp--; /* skip anchor character */ + } + prepstate(&ms, L, s, ls, p, lp); + do { + const char *res; + reprepstate(&ms); + if ((res=match(&ms, s1, p)) != NULL) { + if (find) { + lua_pushinteger(L, (s1 - s) + 1); /* start */ + lua_pushinteger(L, res - s); /* end */ + return push_captures(&ms, NULL, 0) + 2; + } + else + return push_captures(&ms, s1, res); + } + } while (s1++ < ms.src_end && !anchor); + } + lua_pushnil(L); /* not found */ + return 1; +} + + +static int str_find (lua_State *L) { + return str_find_aux(L, 1); +} + + +static int str_match (lua_State *L) { + return str_find_aux(L, 0); +} + + +/* state for 'gmatch' */ +typedef struct GMatchState { + const char *src; /* current position */ + const char *p; /* pattern */ + const char *lastmatch; /* end of last match */ + MatchState ms; /* match state */ +} GMatchState; + + +static int gmatch_aux (lua_State *L) { + GMatchState *gm = (GMatchState *)lua_touserdata(L, lua_upvalueindex(3)); + const char *src; + gm->ms.L = L; + for (src = gm->src; src <= gm->ms.src_end; src++) { + const char *e; + reprepstate(&gm->ms); + if ((e = match(&gm->ms, src, gm->p)) != NULL && e != gm->lastmatch) { + gm->src = gm->lastmatch = e; + return push_captures(&gm->ms, src, e); + } + } + return 0; /* not found */ +} + + +static int gmatch (lua_State *L) { + size_t ls, lp; + const char *s = luaL_checklstring(L, 1, &ls); + const char *p = luaL_checklstring(L, 2, &lp); + GMatchState *gm; + lua_settop(L, 2); /* keep them on closure to avoid being collected */ + gm = (GMatchState *)lua_newuserdata(L, sizeof(GMatchState)); + prepstate(&gm->ms, L, s, ls, p, lp); + gm->src = s; gm->p = p; gm->lastmatch = NULL; + lua_pushcclosure(L, gmatch_aux, 3); + return 1; +} + + +static void add_s (MatchState *ms, luaL_Buffer *b, const char *s, + const char *e) { + size_t l, i; + lua_State *L = ms->L; + const char *news = lua_tolstring(L, 3, &l); + for (i = 0; i < l; i++) { + if (news[i] != L_ESC) + luaL_addchar(b, news[i]); + else { + i++; /* skip ESC */ + if (!isdigit(uchar(news[i]))) { + if (news[i] != L_ESC) + luaL_error(L, "invalid use of '%c' in replacement string", L_ESC); + luaL_addchar(b, news[i]); + } + else if (news[i] == '0') + luaL_addlstring(b, s, e - s); + else { + push_onecapture(ms, news[i] - '1', s, e); + luaL_tolstring(L, -1, NULL); /* if number, convert it to string */ + lua_remove(L, -2); /* remove original value */ + luaL_addvalue(b); /* add capture to accumulated result */ + } + } + } +} + + +static void add_value (MatchState *ms, luaL_Buffer *b, const char *s, + const char *e, int tr) { + lua_State *L = ms->L; + switch (tr) { + case LUA_TFUNCTION: { + int n; + lua_pushvalue(L, 3); + n = push_captures(ms, s, e); + lua_call(L, n, 1); + break; + } + case LUA_TTABLE: { + push_onecapture(ms, 0, s, e); + lua_gettable(L, 3); + break; + } + default: { /* LUA_TNUMBER or LUA_TSTRING */ + add_s(ms, b, s, e); + return; + } + } + if (!lua_toboolean(L, -1)) { /* nil or false? */ + lua_pop(L, 1); + lua_pushlstring(L, s, e - s); /* keep original text */ + } + else if (!lua_isstring(L, -1)) + luaL_error(L, "invalid replacement value (a %s)", luaL_typename(L, -1)); + luaL_addvalue(b); /* add result to accumulator */ +} + + +static int str_gsub (lua_State *L) { + size_t srcl, lp; + const char *src = luaL_checklstring(L, 1, &srcl); /* subject */ + const char *p = luaL_checklstring(L, 2, &lp); /* pattern */ + const char *lastmatch = NULL; /* end of last match */ + int tr = lua_type(L, 3); /* replacement type */ + lua_Integer max_s = luaL_optinteger(L, 4, srcl + 1); /* max replacements */ + int anchor = (*p == '^'); + lua_Integer n = 0; /* replacement count */ + MatchState ms; + luaL_Buffer b; + luaL_argcheck(L, tr == LUA_TNUMBER || tr == LUA_TSTRING || + tr == LUA_TFUNCTION || tr == LUA_TTABLE, 3, + "string/function/table expected"); + luaL_buffinit(L, &b); + if (anchor) { + p++; lp--; /* skip anchor character */ + } + prepstate(&ms, L, src, srcl, p, lp); + while (n < max_s) { + const char *e; + reprepstate(&ms); /* (re)prepare state for new match */ + if ((e = match(&ms, src, p)) != NULL && e != lastmatch) { /* match? */ + n++; + add_value(&ms, &b, src, e, tr); /* add replacement to buffer */ + src = lastmatch = e; + } + else if (src < ms.src_end) /* otherwise, skip one character */ + luaL_addchar(&b, *src++); + else break; /* end of subject */ + if (anchor) break; + } + luaL_addlstring(&b, src, ms.src_end-src); + luaL_pushresult(&b); + lua_pushinteger(L, n); /* number of substitutions */ + return 2; +} + +/* }====================================================== */ + + + +/* +** {====================================================== +** STRING FORMAT +** ======================================================= +*/ + +#if !defined(lua_number2strx) /* { */ + +/* +** Hexadecimal floating-point formatter +*/ + +#include + +#define SIZELENMOD (sizeof(LUA_NUMBER_FRMLEN)/sizeof(char)) + + +/* +** Number of bits that goes into the first digit. It can be any value +** between 1 and 4; the following definition tries to align the number +** to nibble boundaries by making what is left after that first digit a +** multiple of 4. +*/ +#define L_NBFD ((l_mathlim(MANT_DIG) - 1)%4 + 1) + + +/* +** Add integer part of 'x' to buffer and return new 'x' +*/ +static lua_Number adddigit (char *buff, int n, lua_Number x) { + lua_Number dd = l_mathop(floor)(x); /* get integer part from 'x' */ + int d = (int)dd; + buff[n] = (d < 10 ? d + '0' : d - 10 + 'a'); /* add to buffer */ + return x - dd; /* return what is left */ +} + + +static int num2straux (char *buff, int sz, lua_Number x) { + /* if 'inf' or 'NaN', format it like '%g' */ + if (x != x || x == (lua_Number)HUGE_VAL || x == -(lua_Number)HUGE_VAL) + return l_sprintf(buff, sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)x); + else if (x == 0) { /* can be -0... */ + /* create "0" or "-0" followed by exponent */ + return l_sprintf(buff, sz, LUA_NUMBER_FMT "x0p+0", (LUAI_UACNUMBER)x); + } + else { + int e; + lua_Number m = l_mathop(frexp)(x, &e); /* 'x' fraction and exponent */ + int n = 0; /* character count */ + if (m < 0) { /* is number negative? */ + buff[n++] = '-'; /* add signal */ + m = -m; /* make it positive */ + } + buff[n++] = '0'; buff[n++] = 'x'; /* add "0x" */ + m = adddigit(buff, n++, m * (1 << L_NBFD)); /* add first digit */ + e -= L_NBFD; /* this digit goes before the radix point */ + if (m > 0) { /* more digits? */ + buff[n++] = lua_getlocaledecpoint(); /* add radix point */ + do { /* add as many digits as needed */ + m = adddigit(buff, n++, m * 16); + } while (m > 0); + } + n += l_sprintf(buff + n, sz - n, "p%+d", e); /* add exponent */ + lua_assert(n < sz); + return n; + } +} + + +static int lua_number2strx (lua_State *L, char *buff, int sz, + const char *fmt, lua_Number x) { + int n = num2straux(buff, sz, x); + if (fmt[SIZELENMOD] == 'A') { + int i; + for (i = 0; i < n; i++) + buff[i] = toupper(uchar(buff[i])); + } + else if (fmt[SIZELENMOD] != 'a') + luaL_error(L, "modifiers for format '%%a'/'%%A' not implemented"); + return n; +} + +#endif /* } */ + + +/* +** Maximum size of each formatted item. This maximum size is produced +** by format('%.99f', -maxfloat), and is equal to 99 + 3 ('-', '.', +** and '\0') + number of decimal digits to represent maxfloat (which +** is maximum exponent + 1). (99+3+1 then rounded to 120 for "extra +** expenses", such as locale-dependent stuff) +*/ +#define MAX_ITEM (120 + l_mathlim(MAX_10_EXP)) + + +/* valid flags in a format specification */ +#define FLAGS "-+ #0" + +/* +** maximum size of each format specification (such as "%-099.99d") +*/ +#define MAX_FORMAT 32 + + +static void addquoted (luaL_Buffer *b, const char *s, size_t len) { + luaL_addchar(b, '"'); + while (len--) { + if (*s == '"' || *s == '\\' || *s == '\n') { + luaL_addchar(b, '\\'); + luaL_addchar(b, *s); + } + else if (iscntrl(uchar(*s))) { + char buff[10]; + if (!isdigit(uchar(*(s+1)))) + l_sprintf(buff, sizeof(buff), "\\%d", (int)uchar(*s)); + else + l_sprintf(buff, sizeof(buff), "\\%03d", (int)uchar(*s)); + luaL_addstring(b, buff); + } + else + luaL_addchar(b, *s); + s++; + } + luaL_addchar(b, '"'); +} + + +/* +** Ensures the 'buff' string uses a dot as the radix character. +*/ +static void checkdp (char *buff, int nb) { + if (memchr(buff, '.', nb) == NULL) { /* no dot? */ + char point = lua_getlocaledecpoint(); /* try locale point */ + char *ppoint = (char *)memchr(buff, point, nb); + if (ppoint) *ppoint = '.'; /* change it to a dot */ + } +} + + +static void addliteral (lua_State *L, luaL_Buffer *b, int arg) { + switch (lua_type(L, arg)) { + case LUA_TSTRING: { + size_t len; + const char *s = lua_tolstring(L, arg, &len); + addquoted(b, s, len); + break; + } + case LUA_TNUMBER: { + char *buff = luaL_prepbuffsize(b, MAX_ITEM); + int nb; + if (!lua_isinteger(L, arg)) { /* float? */ + lua_Number n = lua_tonumber(L, arg); /* write as hexa ('%a') */ + nb = lua_number2strx(L, buff, MAX_ITEM, "%" LUA_NUMBER_FRMLEN "a", n); + checkdp(buff, nb); /* ensure it uses a dot */ + } + else { /* integers */ + lua_Integer n = lua_tointeger(L, arg); + const char *format = (n == LUA_MININTEGER) /* corner case? */ + ? "0x%" LUA_INTEGER_FRMLEN "x" /* use hexa */ + : LUA_INTEGER_FMT; /* else use default format */ + nb = l_sprintf(buff, MAX_ITEM, format, (LUAI_UACINT)n); + } + luaL_addsize(b, nb); + break; + } + case LUA_TNIL: case LUA_TBOOLEAN: { + luaL_tolstring(L, arg, NULL); + luaL_addvalue(b); + break; + } + default: { + luaL_argerror(L, arg, "value has no literal form"); + } + } +} + + +static const char *scanformat (lua_State *L, const char *strfrmt, char *form) { + const char *p = strfrmt; + while (*p != '\0' && strchr(FLAGS, *p) != NULL) p++; /* skip flags */ + if ((size_t)(p - strfrmt) >= sizeof(FLAGS)/sizeof(char)) + luaL_error(L, "invalid format (repeated flags)"); + if (isdigit(uchar(*p))) p++; /* skip width */ + if (isdigit(uchar(*p))) p++; /* (2 digits at most) */ + if (*p == '.') { + p++; + if (isdigit(uchar(*p))) p++; /* skip precision */ + if (isdigit(uchar(*p))) p++; /* (2 digits at most) */ + } + if (isdigit(uchar(*p))) + luaL_error(L, "invalid format (width or precision too long)"); + *(form++) = '%'; + memcpy(form, strfrmt, ((p - strfrmt) + 1) * sizeof(char)); + form += (p - strfrmt) + 1; + *form = '\0'; + return p; +} + + +/* +** add length modifier into formats +*/ +static void addlenmod (char *form, const char *lenmod) { + size_t l = strlen(form); + size_t lm = strlen(lenmod); + char spec = form[l - 1]; + strcpy(form + l - 1, lenmod); + form[l + lm - 1] = spec; + form[l + lm] = '\0'; +} + + +static int str_format (lua_State *L) { + int top = lua_gettop(L); + int arg = 1; + size_t sfl; + const char *strfrmt = luaL_checklstring(L, arg, &sfl); + const char *strfrmt_end = strfrmt+sfl; + luaL_Buffer b; + luaL_buffinit(L, &b); + while (strfrmt < strfrmt_end) { + if (*strfrmt != L_ESC) + luaL_addchar(&b, *strfrmt++); + else if (*++strfrmt == L_ESC) + luaL_addchar(&b, *strfrmt++); /* %% */ + else { /* format item */ + char form[MAX_FORMAT]; /* to store the format ('%...') */ + char *buff = luaL_prepbuffsize(&b, MAX_ITEM); /* to put formatted item */ + int nb = 0; /* number of bytes in added item */ + if (++arg > top) + luaL_argerror(L, arg, "no value"); + strfrmt = scanformat(L, strfrmt, form); + switch (*strfrmt++) { + case 'c': { + nb = l_sprintf(buff, MAX_ITEM, form, (int)luaL_checkinteger(L, arg)); + break; + } + case 'd': case 'i': + case 'o': case 'u': case 'x': case 'X': { + lua_Integer n = luaL_checkinteger(L, arg); + addlenmod(form, LUA_INTEGER_FRMLEN); + nb = l_sprintf(buff, MAX_ITEM, form, (LUAI_UACINT)n); + break; + } + case 'a': case 'A': + addlenmod(form, LUA_NUMBER_FRMLEN); + nb = lua_number2strx(L, buff, MAX_ITEM, form, + luaL_checknumber(L, arg)); + break; + case 'e': case 'E': case 'f': + case 'g': case 'G': { + lua_Number n = luaL_checknumber(L, arg); + addlenmod(form, LUA_NUMBER_FRMLEN); + nb = l_sprintf(buff, MAX_ITEM, form, (LUAI_UACNUMBER)n); + break; + } + case 'q': { + addliteral(L, &b, arg); + break; + } + case 's': { + size_t l; + const char *s = luaL_tolstring(L, arg, &l); + if (form[2] == '\0') /* no modifiers? */ + luaL_addvalue(&b); /* keep entire string */ + else { + luaL_argcheck(L, l == strlen(s), arg, "string contains zeros"); + if (!strchr(form, '.') && l >= 100) { + /* no precision and string is too long to be formatted */ + luaL_addvalue(&b); /* keep entire string */ + } + else { /* format the string into 'buff' */ + nb = l_sprintf(buff, MAX_ITEM, form, s); + lua_pop(L, 1); /* remove result from 'luaL_tolstring' */ + } + } + break; + } + default: { /* also treat cases 'pnLlh' */ + return luaL_error(L, "invalid option '%%%c' to 'format'", + *(strfrmt - 1)); + } + } + lua_assert(nb < MAX_ITEM); + luaL_addsize(&b, nb); + } + } + luaL_pushresult(&b); + return 1; +} + +/* }====================================================== */ + + +/* +** {====================================================== +** PACK/UNPACK +** ======================================================= +*/ + + +/* value used for padding */ +#if !defined(LUAL_PACKPADBYTE) +#define LUAL_PACKPADBYTE 0x00 +#endif + +/* maximum size for the binary representation of an integer */ +#define MAXINTSIZE 16 + +/* number of bits in a character */ +#define NB CHAR_BIT + +/* mask for one character (NB 1's) */ +#define MC ((1 << NB) - 1) + +/* size of a lua_Integer */ +#define SZINT ((int)sizeof(lua_Integer)) + + +/* dummy union to get native endianness */ +static const union { + int dummy; + char little; /* true iff machine is little endian */ +} nativeendian = {1}; + + +/* dummy structure to get native alignment requirements */ +struct cD { + char c; + union { double d; void *p; lua_Integer i; lua_Number n; } u; +}; + +#define MAXALIGN (offsetof(struct cD, u)) + + +/* +** Union for serializing floats +*/ +typedef union Ftypes { + float f; + double d; + lua_Number n; + char buff[5 * sizeof(lua_Number)]; /* enough for any float type */ +} Ftypes; + + +/* +** information to pack/unpack stuff +*/ +typedef struct Header { + lua_State *L; + int islittle; + int maxalign; +} Header; + + +/* +** options for pack/unpack +*/ +typedef enum KOption { + Kint, /* signed integers */ + Kuint, /* unsigned integers */ + Kfloat, /* floating-point numbers */ + Kchar, /* fixed-length strings */ + Kstring, /* strings with prefixed length */ + Kzstr, /* zero-terminated strings */ + Kpadding, /* padding */ + Kpaddalign, /* padding for alignment */ + Knop /* no-op (configuration or spaces) */ +} KOption; + + +/* +** Read an integer numeral from string 'fmt' or return 'df' if +** there is no numeral +*/ +static int digit (int c) { return '0' <= c && c <= '9'; } + +static int getnum (const char **fmt, int df) { + if (!digit(**fmt)) /* no number? */ + return df; /* return default value */ + else { + int a = 0; + do { + a = a*10 + (*((*fmt)++) - '0'); + } while (digit(**fmt) && a <= ((int)MAXSIZE - 9)/10); + return a; + } +} + + +/* +** Read an integer numeral and raises an error if it is larger +** than the maximum size for integers. +*/ +static int getnumlimit (Header *h, const char **fmt, int df) { + int sz = getnum(fmt, df); + if (sz > MAXINTSIZE || sz <= 0) + luaL_error(h->L, "integral size (%d) out of limits [1,%d]", + sz, MAXINTSIZE); + return sz; +} + + +/* +** Initialize Header +*/ +static void initheader (lua_State *L, Header *h) { + h->L = L; + h->islittle = nativeendian.little; + h->maxalign = 1; +} + + +/* +** Read and classify next option. 'size' is filled with option's size. +*/ +static KOption getoption (Header *h, const char **fmt, int *size) { + int opt = *((*fmt)++); + *size = 0; /* default */ + switch (opt) { + case 'b': *size = sizeof(char); return Kint; + case 'B': *size = sizeof(char); return Kuint; + case 'h': *size = sizeof(short); return Kint; + case 'H': *size = sizeof(short); return Kuint; + case 'l': *size = sizeof(long); return Kint; + case 'L': *size = sizeof(long); return Kuint; + case 'j': *size = sizeof(lua_Integer); return Kint; + case 'J': *size = sizeof(lua_Integer); return Kuint; + case 'T': *size = sizeof(size_t); return Kuint; + case 'f': *size = sizeof(float); return Kfloat; + case 'd': *size = sizeof(double); return Kfloat; + case 'n': *size = sizeof(lua_Number); return Kfloat; + case 'i': *size = getnumlimit(h, fmt, sizeof(int)); return Kint; + case 'I': *size = getnumlimit(h, fmt, sizeof(int)); return Kuint; + case 's': *size = getnumlimit(h, fmt, sizeof(size_t)); return Kstring; + case 'c': + *size = getnum(fmt, -1); + if (*size == -1) + luaL_error(h->L, "missing size for format option 'c'"); + return Kchar; + case 'z': return Kzstr; + case 'x': *size = 1; return Kpadding; + case 'X': return Kpaddalign; + case ' ': break; + case '<': h->islittle = 1; break; + case '>': h->islittle = 0; break; + case '=': h->islittle = nativeendian.little; break; + case '!': h->maxalign = getnumlimit(h, fmt, MAXALIGN); break; + default: luaL_error(h->L, "invalid format option '%c'", opt); + } + return Knop; +} + + +/* +** Read, classify, and fill other details about the next option. +** 'psize' is filled with option's size, 'notoalign' with its +** alignment requirements. +** Local variable 'size' gets the size to be aligned. (Kpadal option +** always gets its full alignment, other options are limited by +** the maximum alignment ('maxalign'). Kchar option needs no alignment +** despite its size. +*/ +static KOption getdetails (Header *h, size_t totalsize, + const char **fmt, int *psize, int *ntoalign) { + KOption opt = getoption(h, fmt, psize); + int align = *psize; /* usually, alignment follows size */ + if (opt == Kpaddalign) { /* 'X' gets alignment from following option */ + if (**fmt == '\0' || getoption(h, fmt, &align) == Kchar || align == 0) + luaL_argerror(h->L, 1, "invalid next option for option 'X'"); + } + if (align <= 1 || opt == Kchar) /* need no alignment? */ + *ntoalign = 0; + else { + if (align > h->maxalign) /* enforce maximum alignment */ + align = h->maxalign; + if ((align & (align - 1)) != 0) /* is 'align' not a power of 2? */ + luaL_argerror(h->L, 1, "format asks for alignment not power of 2"); + *ntoalign = (align - (int)(totalsize & (align - 1))) & (align - 1); + } + return opt; +} + + +/* +** Pack integer 'n' with 'size' bytes and 'islittle' endianness. +** The final 'if' handles the case when 'size' is larger than +** the size of a Lua integer, correcting the extra sign-extension +** bytes if necessary (by default they would be zeros). +*/ +static void packint (luaL_Buffer *b, lua_Unsigned n, + int islittle, int size, int neg) { + char *buff = luaL_prepbuffsize(b, size); + int i; + buff[islittle ? 0 : size - 1] = (char)(n & MC); /* first byte */ + for (i = 1; i < size; i++) { + n >>= NB; + buff[islittle ? i : size - 1 - i] = (char)(n & MC); + } + if (neg && size > SZINT) { /* negative number need sign extension? */ + for (i = SZINT; i < size; i++) /* correct extra bytes */ + buff[islittle ? i : size - 1 - i] = (char)MC; + } + luaL_addsize(b, size); /* add result to buffer */ +} + + +/* +** Copy 'size' bytes from 'src' to 'dest', correcting endianness if +** given 'islittle' is different from native endianness. +*/ +static void copywithendian (volatile char *dest, volatile const char *src, + int size, int islittle) { + if (islittle == nativeendian.little) { + while (size-- != 0) + *(dest++) = *(src++); + } + else { + dest += size - 1; + while (size-- != 0) + *(dest--) = *(src++); + } +} + + +static int str_pack (lua_State *L) { + luaL_Buffer b; + Header h; + const char *fmt = luaL_checkstring(L, 1); /* format string */ + int arg = 1; /* current argument to pack */ + size_t totalsize = 0; /* accumulate total size of result */ + initheader(L, &h); + lua_pushnil(L); /* mark to separate arguments from string buffer */ + luaL_buffinit(L, &b); + while (*fmt != '\0') { + int size, ntoalign; + KOption opt = getdetails(&h, totalsize, &fmt, &size, &ntoalign); + totalsize += ntoalign + size; + while (ntoalign-- > 0) + luaL_addchar(&b, LUAL_PACKPADBYTE); /* fill alignment */ + arg++; + switch (opt) { + case Kint: { /* signed integers */ + lua_Integer n = luaL_checkinteger(L, arg); + if (size < SZINT) { /* need overflow check? */ + lua_Integer lim = (lua_Integer)1 << ((size * NB) - 1); + luaL_argcheck(L, -lim <= n && n < lim, arg, "integer overflow"); + } + packint(&b, (lua_Unsigned)n, h.islittle, size, (n < 0)); + break; + } + case Kuint: { /* unsigned integers */ + lua_Integer n = luaL_checkinteger(L, arg); + if (size < SZINT) /* need overflow check? */ + luaL_argcheck(L, (lua_Unsigned)n < ((lua_Unsigned)1 << (size * NB)), + arg, "unsigned overflow"); + packint(&b, (lua_Unsigned)n, h.islittle, size, 0); + break; + } + case Kfloat: { /* floating-point options */ + volatile Ftypes u; + char *buff = luaL_prepbuffsize(&b, size); + lua_Number n = luaL_checknumber(L, arg); /* get argument */ + if (size == sizeof(u.f)) u.f = (float)n; /* copy it into 'u' */ + else if (size == sizeof(u.d)) u.d = (double)n; + else u.n = n; + /* move 'u' to final result, correcting endianness if needed */ + copywithendian(buff, u.buff, size, h.islittle); + luaL_addsize(&b, size); + break; + } + case Kchar: { /* fixed-size string */ + size_t len; + const char *s = luaL_checklstring(L, arg, &len); + luaL_argcheck(L, len <= (size_t)size, arg, + "string longer than given size"); + luaL_addlstring(&b, s, len); /* add string */ + while (len++ < (size_t)size) /* pad extra space */ + luaL_addchar(&b, LUAL_PACKPADBYTE); + break; + } + case Kstring: { /* strings with length count */ + size_t len; + const char *s = luaL_checklstring(L, arg, &len); + luaL_argcheck(L, size >= (int)sizeof(size_t) || + len < ((size_t)1 << (size * NB)), + arg, "string length does not fit in given size"); + packint(&b, (lua_Unsigned)len, h.islittle, size, 0); /* pack length */ + luaL_addlstring(&b, s, len); + totalsize += len; + break; + } + case Kzstr: { /* zero-terminated string */ + size_t len; + const char *s = luaL_checklstring(L, arg, &len); + luaL_argcheck(L, strlen(s) == len, arg, "string contains zeros"); + luaL_addlstring(&b, s, len); + luaL_addchar(&b, '\0'); /* add zero at the end */ + totalsize += len + 1; + break; + } + case Kpadding: luaL_addchar(&b, LUAL_PACKPADBYTE); /* FALLTHROUGH */ + case Kpaddalign: case Knop: + arg--; /* undo increment */ + break; + } + } + luaL_pushresult(&b); + return 1; +} + + +static int str_packsize (lua_State *L) { + Header h; + const char *fmt = luaL_checkstring(L, 1); /* format string */ + size_t totalsize = 0; /* accumulate total size of result */ + initheader(L, &h); + while (*fmt != '\0') { + int size, ntoalign; + KOption opt = getdetails(&h, totalsize, &fmt, &size, &ntoalign); + size += ntoalign; /* total space used by option */ + luaL_argcheck(L, totalsize <= MAXSIZE - size, 1, + "format result too large"); + totalsize += size; + switch (opt) { + case Kstring: /* strings with length count */ + case Kzstr: /* zero-terminated string */ + luaL_argerror(L, 1, "variable-length format"); + /* call never return, but to avoid warnings: *//* FALLTHROUGH */ + default: break; + } + } + lua_pushinteger(L, (lua_Integer)totalsize); + return 1; +} + + +/* +** Unpack an integer with 'size' bytes and 'islittle' endianness. +** If size is smaller than the size of a Lua integer and integer +** is signed, must do sign extension (propagating the sign to the +** higher bits); if size is larger than the size of a Lua integer, +** it must check the unread bytes to see whether they do not cause an +** overflow. +*/ +static lua_Integer unpackint (lua_State *L, const char *str, + int islittle, int size, int issigned) { + lua_Unsigned res = 0; + int i; + int limit = (size <= SZINT) ? size : SZINT; + for (i = limit - 1; i >= 0; i--) { + res <<= NB; + res |= (lua_Unsigned)(unsigned char)str[islittle ? i : size - 1 - i]; + } + if (size < SZINT) { /* real size smaller than lua_Integer? */ + if (issigned) { /* needs sign extension? */ + lua_Unsigned mask = (lua_Unsigned)1 << (size*NB - 1); + res = ((res ^ mask) - mask); /* do sign extension */ + } + } + else if (size > SZINT) { /* must check unread bytes */ + int mask = (!issigned || (lua_Integer)res >= 0) ? 0 : MC; + for (i = limit; i < size; i++) { + if ((unsigned char)str[islittle ? i : size - 1 - i] != mask) + luaL_error(L, "%d-byte integer does not fit into Lua Integer", size); + } + } + return (lua_Integer)res; +} + + +static int str_unpack (lua_State *L) { + Header h; + const char *fmt = luaL_checkstring(L, 1); + size_t ld; + const char *data = luaL_checklstring(L, 2, &ld); + size_t pos = (size_t)posrelat(luaL_optinteger(L, 3, 1), ld) - 1; + int n = 0; /* number of results */ + luaL_argcheck(L, pos <= ld, 3, "initial position out of string"); + initheader(L, &h); + while (*fmt != '\0') { + int size, ntoalign; + KOption opt = getdetails(&h, pos, &fmt, &size, &ntoalign); + if ((size_t)ntoalign + size > ~pos || pos + ntoalign + size > ld) + luaL_argerror(L, 2, "data string too short"); + pos += ntoalign; /* skip alignment */ + /* stack space for item + next position */ + luaL_checkstack(L, 2, "too many results"); + n++; + switch (opt) { + case Kint: + case Kuint: { + lua_Integer res = unpackint(L, data + pos, h.islittle, size, + (opt == Kint)); + lua_pushinteger(L, res); + break; + } + case Kfloat: { + volatile Ftypes u; + lua_Number num; + copywithendian(u.buff, data + pos, size, h.islittle); + if (size == sizeof(u.f)) num = (lua_Number)u.f; + else if (size == sizeof(u.d)) num = (lua_Number)u.d; + else num = u.n; + lua_pushnumber(L, num); + break; + } + case Kchar: { + lua_pushlstring(L, data + pos, size); + break; + } + case Kstring: { + size_t len = (size_t)unpackint(L, data + pos, h.islittle, size, 0); + luaL_argcheck(L, pos + len + size <= ld, 2, "data string too short"); + lua_pushlstring(L, data + pos + size, len); + pos += len; /* skip string */ + break; + } + case Kzstr: { + size_t len = (int)strlen(data + pos); + lua_pushlstring(L, data + pos, len); + pos += len + 1; /* skip string plus final '\0' */ + break; + } + case Kpaddalign: case Kpadding: case Knop: + n--; /* undo increment */ + break; + } + pos += size; + } + lua_pushinteger(L, pos + 1); /* next position */ + return n + 1; +} + +/* }====================================================== */ + + +static const luaL_Reg strlib[] = { + {"byte", str_byte}, + {"char", str_char}, + {"dump", str_dump}, + {"find", str_find}, + {"format", str_format}, + {"gmatch", gmatch}, + {"gsub", str_gsub}, + {"len", str_len}, + {"lower", str_lower}, + {"match", str_match}, + {"rep", str_rep}, + {"reverse", str_reverse}, + {"sub", str_sub}, + {"upper", str_upper}, + {"pack", str_pack}, + {"packsize", str_packsize}, + {"unpack", str_unpack}, + {NULL, NULL} +}; + + +static void createmetatable (lua_State *L) { + lua_createtable(L, 0, 1); /* table to be metatable for strings */ + lua_pushliteral(L, ""); /* dummy string */ + lua_pushvalue(L, -2); /* copy table */ + lua_setmetatable(L, -2); /* set table as metatable for strings */ + lua_pop(L, 1); /* pop dummy string */ + lua_pushvalue(L, -2); /* get string library */ + lua_setfield(L, -2, "__index"); /* metatable.__index = string */ + lua_pop(L, 1); /* pop metatable */ +} + + +/* +** Open string library +*/ +LUAMOD_API int luaopen_string (lua_State *L) { + luaL_newlib(L, strlib); + createmetatable(L); + return 1; +} + diff --git a/deps/rcheevos/test/lua/src/ltable.c b/deps/rcheevos/test/lua/src/ltable.c new file mode 100644 index 0000000000..d080189f28 --- /dev/null +++ b/deps/rcheevos/test/lua/src/ltable.c @@ -0,0 +1,669 @@ +/* +** $Id: ltable.c,v 2.118 2016/11/07 12:38:35 roberto Exp $ +** Lua tables (hash) +** See Copyright Notice in lua.h +*/ + +#define ltable_c +#define LUA_CORE + +#include "lprefix.h" + + +/* +** Implementation of tables (aka arrays, objects, or hash tables). +** Tables keep its elements in two parts: an array part and a hash part. +** Non-negative integer keys are all candidates to be kept in the array +** part. The actual size of the array is the largest 'n' such that +** more than half the slots between 1 and n are in use. +** Hash uses a mix of chained scatter table with Brent's variation. +** A main invariant of these tables is that, if an element is not +** in its main position (i.e. the 'original' position that its hash gives +** to it), then the colliding element is in its own main position. +** Hence even when the load factor reaches 100%, performance remains good. +*/ + +#include +#include + +#include "lua.h" + +#include "ldebug.h" +#include "ldo.h" +#include "lgc.h" +#include "lmem.h" +#include "lobject.h" +#include "lstate.h" +#include "lstring.h" +#include "ltable.h" +#include "lvm.h" + + +/* +** Maximum size of array part (MAXASIZE) is 2^MAXABITS. MAXABITS is +** the largest integer such that MAXASIZE fits in an unsigned int. +*/ +#define MAXABITS cast_int(sizeof(int) * CHAR_BIT - 1) +#define MAXASIZE (1u << MAXABITS) + +/* +** Maximum size of hash part is 2^MAXHBITS. MAXHBITS is the largest +** integer such that 2^MAXHBITS fits in a signed int. (Note that the +** maximum number of elements in a table, 2^MAXABITS + 2^MAXHBITS, still +** fits comfortably in an unsigned int.) +*/ +#define MAXHBITS (MAXABITS - 1) + + +#define hashpow2(t,n) (gnode(t, lmod((n), sizenode(t)))) + +#define hashstr(t,str) hashpow2(t, (str)->hash) +#define hashboolean(t,p) hashpow2(t, p) +#define hashint(t,i) hashpow2(t, i) + + +/* +** for some types, it is better to avoid modulus by power of 2, as +** they tend to have many 2 factors. +*/ +#define hashmod(t,n) (gnode(t, ((n) % ((sizenode(t)-1)|1)))) + + +#define hashpointer(t,p) hashmod(t, point2uint(p)) + + +#define dummynode (&dummynode_) + +static const Node dummynode_ = { + {NILCONSTANT}, /* value */ + {{NILCONSTANT, 0}} /* key */ +}; + + +/* +** Hash for floating-point numbers. +** The main computation should be just +** n = frexp(n, &i); return (n * INT_MAX) + i +** but there are some numerical subtleties. +** In a two-complement representation, INT_MAX does not has an exact +** representation as a float, but INT_MIN does; because the absolute +** value of 'frexp' is smaller than 1 (unless 'n' is inf/NaN), the +** absolute value of the product 'frexp * -INT_MIN' is smaller or equal +** to INT_MAX. Next, the use of 'unsigned int' avoids overflows when +** adding 'i'; the use of '~u' (instead of '-u') avoids problems with +** INT_MIN. +*/ +#if !defined(l_hashfloat) +static int l_hashfloat (lua_Number n) { + int i; + lua_Integer ni; + n = l_mathop(frexp)(n, &i) * -cast_num(INT_MIN); + if (!lua_numbertointeger(n, &ni)) { /* is 'n' inf/-inf/NaN? */ + lua_assert(luai_numisnan(n) || l_mathop(fabs)(n) == cast_num(HUGE_VAL)); + return 0; + } + else { /* normal case */ + unsigned int u = cast(unsigned int, i) + cast(unsigned int, ni); + return cast_int(u <= cast(unsigned int, INT_MAX) ? u : ~u); + } +} +#endif + + +/* +** returns the 'main' position of an element in a table (that is, the index +** of its hash value) +*/ +static Node *mainposition (const Table *t, const TValue *key) { + switch (ttype(key)) { + case LUA_TNUMINT: + return hashint(t, ivalue(key)); + case LUA_TNUMFLT: + return hashmod(t, l_hashfloat(fltvalue(key))); + case LUA_TSHRSTR: + return hashstr(t, tsvalue(key)); + case LUA_TLNGSTR: + return hashpow2(t, luaS_hashlongstr(tsvalue(key))); + case LUA_TBOOLEAN: + return hashboolean(t, bvalue(key)); + case LUA_TLIGHTUSERDATA: + return hashpointer(t, pvalue(key)); + case LUA_TLCF: + return hashpointer(t, fvalue(key)); + default: + lua_assert(!ttisdeadkey(key)); + return hashpointer(t, gcvalue(key)); + } +} + + +/* +** returns the index for 'key' if 'key' is an appropriate key to live in +** the array part of the table, 0 otherwise. +*/ +static unsigned int arrayindex (const TValue *key) { + if (ttisinteger(key)) { + lua_Integer k = ivalue(key); + if (0 < k && (lua_Unsigned)k <= MAXASIZE) + return cast(unsigned int, k); /* 'key' is an appropriate array index */ + } + return 0; /* 'key' did not match some condition */ +} + + +/* +** returns the index of a 'key' for table traversals. First goes all +** elements in the array part, then elements in the hash part. The +** beginning of a traversal is signaled by 0. +*/ +static unsigned int findindex (lua_State *L, Table *t, StkId key) { + unsigned int i; + if (ttisnil(key)) return 0; /* first iteration */ + i = arrayindex(key); + if (i != 0 && i <= t->sizearray) /* is 'key' inside array part? */ + return i; /* yes; that's the index */ + else { + int nx; + Node *n = mainposition(t, key); + for (;;) { /* check whether 'key' is somewhere in the chain */ + /* key may be dead already, but it is ok to use it in 'next' */ + if (luaV_rawequalobj(gkey(n), key) || + (ttisdeadkey(gkey(n)) && iscollectable(key) && + deadvalue(gkey(n)) == gcvalue(key))) { + i = cast_int(n - gnode(t, 0)); /* key index in hash table */ + /* hash elements are numbered after array ones */ + return (i + 1) + t->sizearray; + } + nx = gnext(n); + if (nx == 0) + luaG_runerror(L, "invalid key to 'next'"); /* key not found */ + else n += nx; + } + } +} + + +int luaH_next (lua_State *L, Table *t, StkId key) { + unsigned int i = findindex(L, t, key); /* find original element */ + for (; i < t->sizearray; i++) { /* try first array part */ + if (!ttisnil(&t->array[i])) { /* a non-nil value? */ + setivalue(key, i + 1); + setobj2s(L, key+1, &t->array[i]); + return 1; + } + } + for (i -= t->sizearray; cast_int(i) < sizenode(t); i++) { /* hash part */ + if (!ttisnil(gval(gnode(t, i)))) { /* a non-nil value? */ + setobj2s(L, key, gkey(gnode(t, i))); + setobj2s(L, key+1, gval(gnode(t, i))); + return 1; + } + } + return 0; /* no more elements */ +} + + +/* +** {============================================================= +** Rehash +** ============================================================== +*/ + +/* +** Compute the optimal size for the array part of table 't'. 'nums' is a +** "count array" where 'nums[i]' is the number of integers in the table +** between 2^(i - 1) + 1 and 2^i. 'pna' enters with the total number of +** integer keys in the table and leaves with the number of keys that +** will go to the array part; return the optimal size. +*/ +static unsigned int computesizes (unsigned int nums[], unsigned int *pna) { + int i; + unsigned int twotoi; /* 2^i (candidate for optimal size) */ + unsigned int a = 0; /* number of elements smaller than 2^i */ + unsigned int na = 0; /* number of elements to go to array part */ + unsigned int optimal = 0; /* optimal size for array part */ + /* loop while keys can fill more than half of total size */ + for (i = 0, twotoi = 1; *pna > twotoi / 2; i++, twotoi *= 2) { + if (nums[i] > 0) { + a += nums[i]; + if (a > twotoi/2) { /* more than half elements present? */ + optimal = twotoi; /* optimal size (till now) */ + na = a; /* all elements up to 'optimal' will go to array part */ + } + } + } + lua_assert((optimal == 0 || optimal / 2 < na) && na <= optimal); + *pna = na; + return optimal; +} + + +static int countint (const TValue *key, unsigned int *nums) { + unsigned int k = arrayindex(key); + if (k != 0) { /* is 'key' an appropriate array index? */ + nums[luaO_ceillog2(k)]++; /* count as such */ + return 1; + } + else + return 0; +} + + +/* +** Count keys in array part of table 't': Fill 'nums[i]' with +** number of keys that will go into corresponding slice and return +** total number of non-nil keys. +*/ +static unsigned int numusearray (const Table *t, unsigned int *nums) { + int lg; + unsigned int ttlg; /* 2^lg */ + unsigned int ause = 0; /* summation of 'nums' */ + unsigned int i = 1; /* count to traverse all array keys */ + /* traverse each slice */ + for (lg = 0, ttlg = 1; lg <= MAXABITS; lg++, ttlg *= 2) { + unsigned int lc = 0; /* counter */ + unsigned int lim = ttlg; + if (lim > t->sizearray) { + lim = t->sizearray; /* adjust upper limit */ + if (i > lim) + break; /* no more elements to count */ + } + /* count elements in range (2^(lg - 1), 2^lg] */ + for (; i <= lim; i++) { + if (!ttisnil(&t->array[i-1])) + lc++; + } + nums[lg] += lc; + ause += lc; + } + return ause; +} + + +static int numusehash (const Table *t, unsigned int *nums, unsigned int *pna) { + int totaluse = 0; /* total number of elements */ + int ause = 0; /* elements added to 'nums' (can go to array part) */ + int i = sizenode(t); + while (i--) { + Node *n = &t->node[i]; + if (!ttisnil(gval(n))) { + ause += countint(gkey(n), nums); + totaluse++; + } + } + *pna += ause; + return totaluse; +} + + +static void setarrayvector (lua_State *L, Table *t, unsigned int size) { + unsigned int i; + luaM_reallocvector(L, t->array, t->sizearray, size, TValue); + for (i=t->sizearray; iarray[i]); + t->sizearray = size; +} + + +static void setnodevector (lua_State *L, Table *t, unsigned int size) { + if (size == 0) { /* no elements to hash part? */ + t->node = cast(Node *, dummynode); /* use common 'dummynode' */ + t->lsizenode = 0; + t->lastfree = NULL; /* signal that it is using dummy node */ + } + else { + int i; + int lsize = luaO_ceillog2(size); + if (lsize > MAXHBITS) + luaG_runerror(L, "table overflow"); + size = twoto(lsize); + t->node = luaM_newvector(L, size, Node); + for (i = 0; i < (int)size; i++) { + Node *n = gnode(t, i); + gnext(n) = 0; + setnilvalue(wgkey(n)); + setnilvalue(gval(n)); + } + t->lsizenode = cast_byte(lsize); + t->lastfree = gnode(t, size); /* all positions are free */ + } +} + + +void luaH_resize (lua_State *L, Table *t, unsigned int nasize, + unsigned int nhsize) { + unsigned int i; + int j; + unsigned int oldasize = t->sizearray; + int oldhsize = allocsizenode(t); + Node *nold = t->node; /* save old hash ... */ + if (nasize > oldasize) /* array part must grow? */ + setarrayvector(L, t, nasize); + /* create new hash part with appropriate size */ + setnodevector(L, t, nhsize); + if (nasize < oldasize) { /* array part must shrink? */ + t->sizearray = nasize; + /* re-insert elements from vanishing slice */ + for (i=nasize; iarray[i])) + luaH_setint(L, t, i + 1, &t->array[i]); + } + /* shrink array */ + luaM_reallocvector(L, t->array, oldasize, nasize, TValue); + } + /* re-insert elements from hash part */ + for (j = oldhsize - 1; j >= 0; j--) { + Node *old = nold + j; + if (!ttisnil(gval(old))) { + /* doesn't need barrier/invalidate cache, as entry was + already present in the table */ + setobjt2t(L, luaH_set(L, t, gkey(old)), gval(old)); + } + } + if (oldhsize > 0) /* not the dummy node? */ + luaM_freearray(L, nold, cast(size_t, oldhsize)); /* free old hash */ +} + + +void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize) { + int nsize = allocsizenode(t); + luaH_resize(L, t, nasize, nsize); +} + +/* +** nums[i] = number of keys 'k' where 2^(i - 1) < k <= 2^i +*/ +static void rehash (lua_State *L, Table *t, const TValue *ek) { + unsigned int asize; /* optimal size for array part */ + unsigned int na; /* number of keys in the array part */ + unsigned int nums[MAXABITS + 1]; + int i; + int totaluse; + for (i = 0; i <= MAXABITS; i++) nums[i] = 0; /* reset counts */ + na = numusearray(t, nums); /* count keys in array part */ + totaluse = na; /* all those keys are integer keys */ + totaluse += numusehash(t, nums, &na); /* count keys in hash part */ + /* count extra key */ + na += countint(ek, nums); + totaluse++; + /* compute new size for array part */ + asize = computesizes(nums, &na); + /* resize the table to new computed sizes */ + luaH_resize(L, t, asize, totaluse - na); +} + + + +/* +** }============================================================= +*/ + + +Table *luaH_new (lua_State *L) { + GCObject *o = luaC_newobj(L, LUA_TTABLE, sizeof(Table)); + Table *t = gco2t(o); + t->metatable = NULL; + t->flags = cast_byte(~0); + t->array = NULL; + t->sizearray = 0; + setnodevector(L, t, 0); + return t; +} + + +void luaH_free (lua_State *L, Table *t) { + if (!isdummy(t)) + luaM_freearray(L, t->node, cast(size_t, sizenode(t))); + luaM_freearray(L, t->array, t->sizearray); + luaM_free(L, t); +} + + +static Node *getfreepos (Table *t) { + if (!isdummy(t)) { + while (t->lastfree > t->node) { + t->lastfree--; + if (ttisnil(gkey(t->lastfree))) + return t->lastfree; + } + } + return NULL; /* could not find a free place */ +} + + + +/* +** inserts a new key into a hash table; first, check whether key's main +** position is free. If not, check whether colliding node is in its main +** position or not: if it is not, move colliding node to an empty place and +** put new key in its main position; otherwise (colliding node is in its main +** position), new key goes to an empty position. +*/ +TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key) { + Node *mp; + TValue aux; + if (ttisnil(key)) luaG_runerror(L, "table index is nil"); + else if (ttisfloat(key)) { + lua_Integer k; + if (luaV_tointeger(key, &k, 0)) { /* does index fit in an integer? */ + setivalue(&aux, k); + key = &aux; /* insert it as an integer */ + } + else if (luai_numisnan(fltvalue(key))) + luaG_runerror(L, "table index is NaN"); + } + mp = mainposition(t, key); + if (!ttisnil(gval(mp)) || isdummy(t)) { /* main position is taken? */ + Node *othern; + Node *f = getfreepos(t); /* get a free place */ + if (f == NULL) { /* cannot find a free place? */ + rehash(L, t, key); /* grow table */ + /* whatever called 'newkey' takes care of TM cache */ + return luaH_set(L, t, key); /* insert key into grown table */ + } + lua_assert(!isdummy(t)); + othern = mainposition(t, gkey(mp)); + if (othern != mp) { /* is colliding node out of its main position? */ + /* yes; move colliding node into free position */ + while (othern + gnext(othern) != mp) /* find previous */ + othern += gnext(othern); + gnext(othern) = cast_int(f - othern); /* rechain to point to 'f' */ + *f = *mp; /* copy colliding node into free pos. (mp->next also goes) */ + if (gnext(mp) != 0) { + gnext(f) += cast_int(mp - f); /* correct 'next' */ + gnext(mp) = 0; /* now 'mp' is free */ + } + setnilvalue(gval(mp)); + } + else { /* colliding node is in its own main position */ + /* new node will go into free position */ + if (gnext(mp) != 0) + gnext(f) = cast_int((mp + gnext(mp)) - f); /* chain new position */ + else lua_assert(gnext(f) == 0); + gnext(mp) = cast_int(f - mp); + mp = f; + } + } + setnodekey(L, &mp->i_key, key); + luaC_barrierback(L, t, key); + lua_assert(ttisnil(gval(mp))); + return gval(mp); +} + + +/* +** search function for integers +*/ +const TValue *luaH_getint (Table *t, lua_Integer key) { + /* (1 <= key && key <= t->sizearray) */ + if (l_castS2U(key) - 1 < t->sizearray) + return &t->array[key - 1]; + else { + Node *n = hashint(t, key); + for (;;) { /* check whether 'key' is somewhere in the chain */ + if (ttisinteger(gkey(n)) && ivalue(gkey(n)) == key) + return gval(n); /* that's it */ + else { + int nx = gnext(n); + if (nx == 0) break; + n += nx; + } + } + return luaO_nilobject; + } +} + + +/* +** search function for short strings +*/ +const TValue *luaH_getshortstr (Table *t, TString *key) { + Node *n = hashstr(t, key); + lua_assert(key->tt == LUA_TSHRSTR); + for (;;) { /* check whether 'key' is somewhere in the chain */ + const TValue *k = gkey(n); + if (ttisshrstring(k) && eqshrstr(tsvalue(k), key)) + return gval(n); /* that's it */ + else { + int nx = gnext(n); + if (nx == 0) + return luaO_nilobject; /* not found */ + n += nx; + } + } +} + + +/* +** "Generic" get version. (Not that generic: not valid for integers, +** which may be in array part, nor for floats with integral values.) +*/ +static const TValue *getgeneric (Table *t, const TValue *key) { + Node *n = mainposition(t, key); + for (;;) { /* check whether 'key' is somewhere in the chain */ + if (luaV_rawequalobj(gkey(n), key)) + return gval(n); /* that's it */ + else { + int nx = gnext(n); + if (nx == 0) + return luaO_nilobject; /* not found */ + n += nx; + } + } +} + + +const TValue *luaH_getstr (Table *t, TString *key) { + if (key->tt == LUA_TSHRSTR) + return luaH_getshortstr(t, key); + else { /* for long strings, use generic case */ + TValue ko; + setsvalue(cast(lua_State *, NULL), &ko, key); + return getgeneric(t, &ko); + } +} + + +/* +** main search function +*/ +const TValue *luaH_get (Table *t, const TValue *key) { + switch (ttype(key)) { + case LUA_TSHRSTR: return luaH_getshortstr(t, tsvalue(key)); + case LUA_TNUMINT: return luaH_getint(t, ivalue(key)); + case LUA_TNIL: return luaO_nilobject; + case LUA_TNUMFLT: { + lua_Integer k; + if (luaV_tointeger(key, &k, 0)) /* index is int? */ + return luaH_getint(t, k); /* use specialized version */ + /* else... */ + } /* FALLTHROUGH */ + default: + return getgeneric(t, key); + } +} + + +/* +** beware: when using this function you probably need to check a GC +** barrier and invalidate the TM cache. +*/ +TValue *luaH_set (lua_State *L, Table *t, const TValue *key) { + const TValue *p = luaH_get(t, key); + if (p != luaO_nilobject) + return cast(TValue *, p); + else return luaH_newkey(L, t, key); +} + + +void luaH_setint (lua_State *L, Table *t, lua_Integer key, TValue *value) { + const TValue *p = luaH_getint(t, key); + TValue *cell; + if (p != luaO_nilobject) + cell = cast(TValue *, p); + else { + TValue k; + setivalue(&k, key); + cell = luaH_newkey(L, t, &k); + } + setobj2t(L, cell, value); +} + + +static int unbound_search (Table *t, unsigned int j) { + unsigned int i = j; /* i is zero or a present index */ + j++; + /* find 'i' and 'j' such that i is present and j is not */ + while (!ttisnil(luaH_getint(t, j))) { + i = j; + if (j > cast(unsigned int, MAX_INT)/2) { /* overflow? */ + /* table was built with bad purposes: resort to linear search */ + i = 1; + while (!ttisnil(luaH_getint(t, i))) i++; + return i - 1; + } + j *= 2; + } + /* now do a binary search between them */ + while (j - i > 1) { + unsigned int m = (i+j)/2; + if (ttisnil(luaH_getint(t, m))) j = m; + else i = m; + } + return i; +} + + +/* +** Try to find a boundary in table 't'. A 'boundary' is an integer index +** such that t[i] is non-nil and t[i+1] is nil (and 0 if t[1] is nil). +*/ +int luaH_getn (Table *t) { + unsigned int j = t->sizearray; + if (j > 0 && ttisnil(&t->array[j - 1])) { + /* there is a boundary in the array part: (binary) search for it */ + unsigned int i = 0; + while (j - i > 1) { + unsigned int m = (i+j)/2; + if (ttisnil(&t->array[m - 1])) j = m; + else i = m; + } + return i; + } + /* else must find a boundary in hash part */ + else if (isdummy(t)) /* hash part is empty? */ + return j; /* that is easy... */ + else return unbound_search(t, j); +} + + + +#if defined(LUA_DEBUG) + +Node *luaH_mainposition (const Table *t, const TValue *key) { + return mainposition(t, key); +} + +int luaH_isdummy (const Table *t) { return isdummy(t); } + +#endif diff --git a/deps/rcheevos/test/lua/src/ltable.h b/deps/rcheevos/test/lua/src/ltable.h new file mode 100644 index 0000000000..6da9024fe1 --- /dev/null +++ b/deps/rcheevos/test/lua/src/ltable.h @@ -0,0 +1,66 @@ +/* +** $Id: ltable.h,v 2.23 2016/12/22 13:08:50 roberto Exp $ +** Lua tables (hash) +** See Copyright Notice in lua.h +*/ + +#ifndef ltable_h +#define ltable_h + +#include "lobject.h" + + +#define gnode(t,i) (&(t)->node[i]) +#define gval(n) (&(n)->i_val) +#define gnext(n) ((n)->i_key.nk.next) + + +/* 'const' to avoid wrong writings that can mess up field 'next' */ +#define gkey(n) cast(const TValue*, (&(n)->i_key.tvk)) + +/* +** writable version of 'gkey'; allows updates to individual fields, +** but not to the whole (which has incompatible type) +*/ +#define wgkey(n) (&(n)->i_key.nk) + +#define invalidateTMcache(t) ((t)->flags = 0) + + +/* true when 't' is using 'dummynode' as its hash part */ +#define isdummy(t) ((t)->lastfree == NULL) + + +/* allocated size for hash nodes */ +#define allocsizenode(t) (isdummy(t) ? 0 : sizenode(t)) + + +/* returns the key, given the value of a table entry */ +#define keyfromval(v) \ + (gkey(cast(Node *, cast(char *, (v)) - offsetof(Node, i_val)))) + + +LUAI_FUNC const TValue *luaH_getint (Table *t, lua_Integer key); +LUAI_FUNC void luaH_setint (lua_State *L, Table *t, lua_Integer key, + TValue *value); +LUAI_FUNC const TValue *luaH_getshortstr (Table *t, TString *key); +LUAI_FUNC const TValue *luaH_getstr (Table *t, TString *key); +LUAI_FUNC const TValue *luaH_get (Table *t, const TValue *key); +LUAI_FUNC TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key); +LUAI_FUNC TValue *luaH_set (lua_State *L, Table *t, const TValue *key); +LUAI_FUNC Table *luaH_new (lua_State *L); +LUAI_FUNC void luaH_resize (lua_State *L, Table *t, unsigned int nasize, + unsigned int nhsize); +LUAI_FUNC void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize); +LUAI_FUNC void luaH_free (lua_State *L, Table *t); +LUAI_FUNC int luaH_next (lua_State *L, Table *t, StkId key); +LUAI_FUNC int luaH_getn (Table *t); + + +#if defined(LUA_DEBUG) +LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key); +LUAI_FUNC int luaH_isdummy (const Table *t); +#endif + + +#endif diff --git a/deps/rcheevos/test/lua/src/ltablib.c b/deps/rcheevos/test/lua/src/ltablib.c new file mode 100644 index 0000000000..98b2f87137 --- /dev/null +++ b/deps/rcheevos/test/lua/src/ltablib.c @@ -0,0 +1,450 @@ +/* +** $Id: ltablib.c,v 1.93 2016/02/25 19:41:54 roberto Exp $ +** Library for Table Manipulation +** See Copyright Notice in lua.h +*/ + +#define ltablib_c +#define LUA_LIB + +#include "lprefix.h" + + +#include +#include +#include + +#include "lua.h" + +#include "lauxlib.h" +#include "lualib.h" + + +/* +** Operations that an object must define to mimic a table +** (some functions only need some of them) +*/ +#define TAB_R 1 /* read */ +#define TAB_W 2 /* write */ +#define TAB_L 4 /* length */ +#define TAB_RW (TAB_R | TAB_W) /* read/write */ + + +#define aux_getn(L,n,w) (checktab(L, n, (w) | TAB_L), luaL_len(L, n)) + + +static int checkfield (lua_State *L, const char *key, int n) { + lua_pushstring(L, key); + return (lua_rawget(L, -n) != LUA_TNIL); +} + + +/* +** Check that 'arg' either is a table or can behave like one (that is, +** has a metatable with the required metamethods) +*/ +static void checktab (lua_State *L, int arg, int what) { + if (lua_type(L, arg) != LUA_TTABLE) { /* is it not a table? */ + int n = 1; /* number of elements to pop */ + if (lua_getmetatable(L, arg) && /* must have metatable */ + (!(what & TAB_R) || checkfield(L, "__index", ++n)) && + (!(what & TAB_W) || checkfield(L, "__newindex", ++n)) && + (!(what & TAB_L) || checkfield(L, "__len", ++n))) { + lua_pop(L, n); /* pop metatable and tested metamethods */ + } + else + luaL_checktype(L, arg, LUA_TTABLE); /* force an error */ + } +} + + +#if defined(LUA_COMPAT_MAXN) +static int maxn (lua_State *L) { + lua_Number max = 0; + luaL_checktype(L, 1, LUA_TTABLE); + lua_pushnil(L); /* first key */ + while (lua_next(L, 1)) { + lua_pop(L, 1); /* remove value */ + if (lua_type(L, -1) == LUA_TNUMBER) { + lua_Number v = lua_tonumber(L, -1); + if (v > max) max = v; + } + } + lua_pushnumber(L, max); + return 1; +} +#endif + + +static int tinsert (lua_State *L) { + lua_Integer e = aux_getn(L, 1, TAB_RW) + 1; /* first empty element */ + lua_Integer pos; /* where to insert new element */ + switch (lua_gettop(L)) { + case 2: { /* called with only 2 arguments */ + pos = e; /* insert new element at the end */ + break; + } + case 3: { + lua_Integer i; + pos = luaL_checkinteger(L, 2); /* 2nd argument is the position */ + luaL_argcheck(L, 1 <= pos && pos <= e, 2, "position out of bounds"); + for (i = e; i > pos; i--) { /* move up elements */ + lua_geti(L, 1, i - 1); + lua_seti(L, 1, i); /* t[i] = t[i - 1] */ + } + break; + } + default: { + return luaL_error(L, "wrong number of arguments to 'insert'"); + } + } + lua_seti(L, 1, pos); /* t[pos] = v */ + return 0; +} + + +static int tremove (lua_State *L) { + lua_Integer size = aux_getn(L, 1, TAB_RW); + lua_Integer pos = luaL_optinteger(L, 2, size); + if (pos != size) /* validate 'pos' if given */ + luaL_argcheck(L, 1 <= pos && pos <= size + 1, 1, "position out of bounds"); + lua_geti(L, 1, pos); /* result = t[pos] */ + for ( ; pos < size; pos++) { + lua_geti(L, 1, pos + 1); + lua_seti(L, 1, pos); /* t[pos] = t[pos + 1] */ + } + lua_pushnil(L); + lua_seti(L, 1, pos); /* t[pos] = nil */ + return 1; +} + + +/* +** Copy elements (1[f], ..., 1[e]) into (tt[t], tt[t+1], ...). Whenever +** possible, copy in increasing order, which is better for rehashing. +** "possible" means destination after original range, or smaller +** than origin, or copying to another table. +*/ +static int tmove (lua_State *L) { + lua_Integer f = luaL_checkinteger(L, 2); + lua_Integer e = luaL_checkinteger(L, 3); + lua_Integer t = luaL_checkinteger(L, 4); + int tt = !lua_isnoneornil(L, 5) ? 5 : 1; /* destination table */ + checktab(L, 1, TAB_R); + checktab(L, tt, TAB_W); + if (e >= f) { /* otherwise, nothing to move */ + lua_Integer n, i; + luaL_argcheck(L, f > 0 || e < LUA_MAXINTEGER + f, 3, + "too many elements to move"); + n = e - f + 1; /* number of elements to move */ + luaL_argcheck(L, t <= LUA_MAXINTEGER - n + 1, 4, + "destination wrap around"); + if (t > e || t <= f || (tt != 1 && !lua_compare(L, 1, tt, LUA_OPEQ))) { + for (i = 0; i < n; i++) { + lua_geti(L, 1, f + i); + lua_seti(L, tt, t + i); + } + } + else { + for (i = n - 1; i >= 0; i--) { + lua_geti(L, 1, f + i); + lua_seti(L, tt, t + i); + } + } + } + lua_pushvalue(L, tt); /* return destination table */ + return 1; +} + + +static void addfield (lua_State *L, luaL_Buffer *b, lua_Integer i) { + lua_geti(L, 1, i); + if (!lua_isstring(L, -1)) + luaL_error(L, "invalid value (%s) at index %d in table for 'concat'", + luaL_typename(L, -1), i); + luaL_addvalue(b); +} + + +static int tconcat (lua_State *L) { + luaL_Buffer b; + lua_Integer last = aux_getn(L, 1, TAB_R); + size_t lsep; + const char *sep = luaL_optlstring(L, 2, "", &lsep); + lua_Integer i = luaL_optinteger(L, 3, 1); + last = luaL_optinteger(L, 4, last); + luaL_buffinit(L, &b); + for (; i < last; i++) { + addfield(L, &b, i); + luaL_addlstring(&b, sep, lsep); + } + if (i == last) /* add last value (if interval was not empty) */ + addfield(L, &b, i); + luaL_pushresult(&b); + return 1; +} + + +/* +** {====================================================== +** Pack/unpack +** ======================================================= +*/ + +static int pack (lua_State *L) { + int i; + int n = lua_gettop(L); /* number of elements to pack */ + lua_createtable(L, n, 1); /* create result table */ + lua_insert(L, 1); /* put it at index 1 */ + for (i = n; i >= 1; i--) /* assign elements */ + lua_seti(L, 1, i); + lua_pushinteger(L, n); + lua_setfield(L, 1, "n"); /* t.n = number of elements */ + return 1; /* return table */ +} + + +static int unpack (lua_State *L) { + lua_Unsigned n; + lua_Integer i = luaL_optinteger(L, 2, 1); + lua_Integer e = luaL_opt(L, luaL_checkinteger, 3, luaL_len(L, 1)); + if (i > e) return 0; /* empty range */ + n = (lua_Unsigned)e - i; /* number of elements minus 1 (avoid overflows) */ + if (n >= (unsigned int)INT_MAX || !lua_checkstack(L, (int)(++n))) + return luaL_error(L, "too many results to unpack"); + for (; i < e; i++) { /* push arg[i..e - 1] (to avoid overflows) */ + lua_geti(L, 1, i); + } + lua_geti(L, 1, e); /* push last element */ + return (int)n; +} + +/* }====================================================== */ + + + +/* +** {====================================================== +** Quicksort +** (based on 'Algorithms in MODULA-3', Robert Sedgewick; +** Addison-Wesley, 1993.) +** ======================================================= +*/ + + +/* type for array indices */ +typedef unsigned int IdxT; + + +/* +** Produce a "random" 'unsigned int' to randomize pivot choice. This +** macro is used only when 'sort' detects a big imbalance in the result +** of a partition. (If you don't want/need this "randomness", ~0 is a +** good choice.) +*/ +#if !defined(l_randomizePivot) /* { */ + +#include + +/* size of 'e' measured in number of 'unsigned int's */ +#define sof(e) (sizeof(e) / sizeof(unsigned int)) + +/* +** Use 'time' and 'clock' as sources of "randomness". Because we don't +** know the types 'clock_t' and 'time_t', we cannot cast them to +** anything without risking overflows. A safe way to use their values +** is to copy them to an array of a known type and use the array values. +*/ +static unsigned int l_randomizePivot (void) { + clock_t c = clock(); + time_t t = time(NULL); + unsigned int buff[sof(c) + sof(t)]; + unsigned int i, rnd = 0; + memcpy(buff, &c, sof(c) * sizeof(unsigned int)); + memcpy(buff + sof(c), &t, sof(t) * sizeof(unsigned int)); + for (i = 0; i < sof(buff); i++) + rnd += buff[i]; + return rnd; +} + +#endif /* } */ + + +/* arrays larger than 'RANLIMIT' may use randomized pivots */ +#define RANLIMIT 100u + + +static void set2 (lua_State *L, IdxT i, IdxT j) { + lua_seti(L, 1, i); + lua_seti(L, 1, j); +} + + +/* +** Return true iff value at stack index 'a' is less than the value at +** index 'b' (according to the order of the sort). +*/ +static int sort_comp (lua_State *L, int a, int b) { + if (lua_isnil(L, 2)) /* no function? */ + return lua_compare(L, a, b, LUA_OPLT); /* a < b */ + else { /* function */ + int res; + lua_pushvalue(L, 2); /* push function */ + lua_pushvalue(L, a-1); /* -1 to compensate function */ + lua_pushvalue(L, b-2); /* -2 to compensate function and 'a' */ + lua_call(L, 2, 1); /* call function */ + res = lua_toboolean(L, -1); /* get result */ + lua_pop(L, 1); /* pop result */ + return res; + } +} + + +/* +** Does the partition: Pivot P is at the top of the stack. +** precondition: a[lo] <= P == a[up-1] <= a[up], +** so it only needs to do the partition from lo + 1 to up - 2. +** Pos-condition: a[lo .. i - 1] <= a[i] == P <= a[i + 1 .. up] +** returns 'i'. +*/ +static IdxT partition (lua_State *L, IdxT lo, IdxT up) { + IdxT i = lo; /* will be incremented before first use */ + IdxT j = up - 1; /* will be decremented before first use */ + /* loop invariant: a[lo .. i] <= P <= a[j .. up] */ + for (;;) { + /* next loop: repeat ++i while a[i] < P */ + while (lua_geti(L, 1, ++i), sort_comp(L, -1, -2)) { + if (i == up - 1) /* a[i] < P but a[up - 1] == P ?? */ + luaL_error(L, "invalid order function for sorting"); + lua_pop(L, 1); /* remove a[i] */ + } + /* after the loop, a[i] >= P and a[lo .. i - 1] < P */ + /* next loop: repeat --j while P < a[j] */ + while (lua_geti(L, 1, --j), sort_comp(L, -3, -1)) { + if (j < i) /* j < i but a[j] > P ?? */ + luaL_error(L, "invalid order function for sorting"); + lua_pop(L, 1); /* remove a[j] */ + } + /* after the loop, a[j] <= P and a[j + 1 .. up] >= P */ + if (j < i) { /* no elements out of place? */ + /* a[lo .. i - 1] <= P <= a[j + 1 .. i .. up] */ + lua_pop(L, 1); /* pop a[j] */ + /* swap pivot (a[up - 1]) with a[i] to satisfy pos-condition */ + set2(L, up - 1, i); + return i; + } + /* otherwise, swap a[i] - a[j] to restore invariant and repeat */ + set2(L, i, j); + } +} + + +/* +** Choose an element in the middle (2nd-3th quarters) of [lo,up] +** "randomized" by 'rnd' +*/ +static IdxT choosePivot (IdxT lo, IdxT up, unsigned int rnd) { + IdxT r4 = (up - lo) / 4; /* range/4 */ + IdxT p = rnd % (r4 * 2) + (lo + r4); + lua_assert(lo + r4 <= p && p <= up - r4); + return p; +} + + +/* +** QuickSort algorithm (recursive function) +*/ +static void auxsort (lua_State *L, IdxT lo, IdxT up, + unsigned int rnd) { + while (lo < up) { /* loop for tail recursion */ + IdxT p; /* Pivot index */ + IdxT n; /* to be used later */ + /* sort elements 'lo', 'p', and 'up' */ + lua_geti(L, 1, lo); + lua_geti(L, 1, up); + if (sort_comp(L, -1, -2)) /* a[up] < a[lo]? */ + set2(L, lo, up); /* swap a[lo] - a[up] */ + else + lua_pop(L, 2); /* remove both values */ + if (up - lo == 1) /* only 2 elements? */ + return; /* already sorted */ + if (up - lo < RANLIMIT || rnd == 0) /* small interval or no randomize? */ + p = (lo + up)/2; /* middle element is a good pivot */ + else /* for larger intervals, it is worth a random pivot */ + p = choosePivot(lo, up, rnd); + lua_geti(L, 1, p); + lua_geti(L, 1, lo); + if (sort_comp(L, -2, -1)) /* a[p] < a[lo]? */ + set2(L, p, lo); /* swap a[p] - a[lo] */ + else { + lua_pop(L, 1); /* remove a[lo] */ + lua_geti(L, 1, up); + if (sort_comp(L, -1, -2)) /* a[up] < a[p]? */ + set2(L, p, up); /* swap a[up] - a[p] */ + else + lua_pop(L, 2); + } + if (up - lo == 2) /* only 3 elements? */ + return; /* already sorted */ + lua_geti(L, 1, p); /* get middle element (Pivot) */ + lua_pushvalue(L, -1); /* push Pivot */ + lua_geti(L, 1, up - 1); /* push a[up - 1] */ + set2(L, p, up - 1); /* swap Pivot (a[p]) with a[up - 1] */ + p = partition(L, lo, up); + /* a[lo .. p - 1] <= a[p] == P <= a[p + 1 .. up] */ + if (p - lo < up - p) { /* lower interval is smaller? */ + auxsort(L, lo, p - 1, rnd); /* call recursively for lower interval */ + n = p - lo; /* size of smaller interval */ + lo = p + 1; /* tail call for [p + 1 .. up] (upper interval) */ + } + else { + auxsort(L, p + 1, up, rnd); /* call recursively for upper interval */ + n = up - p; /* size of smaller interval */ + up = p - 1; /* tail call for [lo .. p - 1] (lower interval) */ + } + if ((up - lo) / 128 > n) /* partition too imbalanced? */ + rnd = l_randomizePivot(); /* try a new randomization */ + } /* tail call auxsort(L, lo, up, rnd) */ +} + + +static int sort (lua_State *L) { + lua_Integer n = aux_getn(L, 1, TAB_RW); + if (n > 1) { /* non-trivial interval? */ + luaL_argcheck(L, n < INT_MAX, 1, "array too big"); + if (!lua_isnoneornil(L, 2)) /* is there a 2nd argument? */ + luaL_checktype(L, 2, LUA_TFUNCTION); /* must be a function */ + lua_settop(L, 2); /* make sure there are two arguments */ + auxsort(L, 1, (IdxT)n, 0); + } + return 0; +} + +/* }====================================================== */ + + +static const luaL_Reg tab_funcs[] = { + {"concat", tconcat}, +#if defined(LUA_COMPAT_MAXN) + {"maxn", maxn}, +#endif + {"insert", tinsert}, + {"pack", pack}, + {"unpack", unpack}, + {"remove", tremove}, + {"move", tmove}, + {"sort", sort}, + {NULL, NULL} +}; + + +LUAMOD_API int luaopen_table (lua_State *L) { + luaL_newlib(L, tab_funcs); +#if defined(LUA_COMPAT_UNPACK) + /* _G.unpack = table.unpack */ + lua_getfield(L, -1, "unpack"); + lua_setglobal(L, "unpack"); +#endif + return 1; +} + diff --git a/deps/rcheevos/test/lua/src/ltm.c b/deps/rcheevos/test/lua/src/ltm.c new file mode 100644 index 0000000000..bc8f64eb31 --- /dev/null +++ b/deps/rcheevos/test/lua/src/ltm.c @@ -0,0 +1,165 @@ +/* +** $Id: ltm.c,v 2.38 2016/12/22 13:08:50 roberto Exp $ +** Tag methods +** See Copyright Notice in lua.h +*/ + +#define ltm_c +#define LUA_CORE + +#include "lprefix.h" + + +#include + +#include "lua.h" + +#include "ldebug.h" +#include "ldo.h" +#include "lobject.h" +#include "lstate.h" +#include "lstring.h" +#include "ltable.h" +#include "ltm.h" +#include "lvm.h" + + +static const char udatatypename[] = "userdata"; + +LUAI_DDEF const char *const luaT_typenames_[LUA_TOTALTAGS] = { + "no value", + "nil", "boolean", udatatypename, "number", + "string", "table", "function", udatatypename, "thread", + "proto" /* this last case is used for tests only */ +}; + + +void luaT_init (lua_State *L) { + static const char *const luaT_eventname[] = { /* ORDER TM */ + "__index", "__newindex", + "__gc", "__mode", "__len", "__eq", + "__add", "__sub", "__mul", "__mod", "__pow", + "__div", "__idiv", + "__band", "__bor", "__bxor", "__shl", "__shr", + "__unm", "__bnot", "__lt", "__le", + "__concat", "__call" + }; + int i; + for (i=0; itmname[i] = luaS_new(L, luaT_eventname[i]); + luaC_fix(L, obj2gco(G(L)->tmname[i])); /* never collect these names */ + } +} + + +/* +** function to be used with macro "fasttm": optimized for absence of +** tag methods +*/ +const TValue *luaT_gettm (Table *events, TMS event, TString *ename) { + const TValue *tm = luaH_getshortstr(events, ename); + lua_assert(event <= TM_EQ); + if (ttisnil(tm)) { /* no tag method? */ + events->flags |= cast_byte(1u<metatable; + break; + case LUA_TUSERDATA: + mt = uvalue(o)->metatable; + break; + default: + mt = G(L)->mt[ttnov(o)]; + } + return (mt ? luaH_getshortstr(mt, G(L)->tmname[event]) : luaO_nilobject); +} + + +/* +** Return the name of the type of an object. For tables and userdata +** with metatable, use their '__name' metafield, if present. +*/ +const char *luaT_objtypename (lua_State *L, const TValue *o) { + Table *mt; + if ((ttistable(o) && (mt = hvalue(o)->metatable) != NULL) || + (ttisfulluserdata(o) && (mt = uvalue(o)->metatable) != NULL)) { + const TValue *name = luaH_getshortstr(mt, luaS_new(L, "__name")); + if (ttisstring(name)) /* is '__name' a string? */ + return getstr(tsvalue(name)); /* use it as type name */ + } + return ttypename(ttnov(o)); /* else use standard type name */ +} + + +void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1, + const TValue *p2, TValue *p3, int hasres) { + ptrdiff_t result = savestack(L, p3); + StkId func = L->top; + setobj2s(L, func, f); /* push function (assume EXTRC_STACK) */ + setobj2s(L, func + 1, p1); /* 1st argument */ + setobj2s(L, func + 2, p2); /* 2nd argument */ + L->top += 3; + if (!hasres) /* no result? 'p3' is third argument */ + setobj2s(L, L->top++, p3); /* 3rd argument */ + /* metamethod may yield only when called from Lua code */ + if (isLua(L->ci)) + luaD_call(L, func, hasres); + else + luaD_callnoyield(L, func, hasres); + if (hasres) { /* if has result, move it to its place */ + p3 = restorestack(L, result); + setobjs2s(L, p3, --L->top); + } +} + + +int luaT_callbinTM (lua_State *L, const TValue *p1, const TValue *p2, + StkId res, TMS event) { + const TValue *tm = luaT_gettmbyobj(L, p1, event); /* try first operand */ + if (ttisnil(tm)) + tm = luaT_gettmbyobj(L, p2, event); /* try second operand */ + if (ttisnil(tm)) return 0; + luaT_callTM(L, tm, p1, p2, res, 1); + return 1; +} + + +void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2, + StkId res, TMS event) { + if (!luaT_callbinTM(L, p1, p2, res, event)) { + switch (event) { + case TM_CONCAT: + luaG_concaterror(L, p1, p2); + /* call never returns, but to avoid warnings: *//* FALLTHROUGH */ + case TM_BAND: case TM_BOR: case TM_BXOR: + case TM_SHL: case TM_SHR: case TM_BNOT: { + lua_Number dummy; + if (tonumber(p1, &dummy) && tonumber(p2, &dummy)) + luaG_tointerror(L, p1, p2); + else + luaG_opinterror(L, p1, p2, "perform bitwise operation on"); + } + /* calls never return, but to avoid warnings: *//* FALLTHROUGH */ + default: + luaG_opinterror(L, p1, p2, "perform arithmetic on"); + } + } +} + + +int luaT_callorderTM (lua_State *L, const TValue *p1, const TValue *p2, + TMS event) { + if (!luaT_callbinTM(L, p1, p2, L->top, event)) + return -1; /* no metamethod */ + else + return !l_isfalse(L->top); +} + diff --git a/deps/rcheevos/test/lua/src/ltm.h b/deps/rcheevos/test/lua/src/ltm.h new file mode 100644 index 0000000000..63db7269bb --- /dev/null +++ b/deps/rcheevos/test/lua/src/ltm.h @@ -0,0 +1,76 @@ +/* +** $Id: ltm.h,v 2.22 2016/02/26 19:20:15 roberto Exp $ +** Tag methods +** See Copyright Notice in lua.h +*/ + +#ifndef ltm_h +#define ltm_h + + +#include "lobject.h" + + +/* +* WARNING: if you change the order of this enumeration, +* grep "ORDER TM" and "ORDER OP" +*/ +typedef enum { + TM_INDEX, + TM_NEWINDEX, + TM_GC, + TM_MODE, + TM_LEN, + TM_EQ, /* last tag method with fast access */ + TM_ADD, + TM_SUB, + TM_MUL, + TM_MOD, + TM_POW, + TM_DIV, + TM_IDIV, + TM_BAND, + TM_BOR, + TM_BXOR, + TM_SHL, + TM_SHR, + TM_UNM, + TM_BNOT, + TM_LT, + TM_LE, + TM_CONCAT, + TM_CALL, + TM_N /* number of elements in the enum */ +} TMS; + + + +#define gfasttm(g,et,e) ((et) == NULL ? NULL : \ + ((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, (g)->tmname[e])) + +#define fasttm(l,et,e) gfasttm(G(l), et, e) + +#define ttypename(x) luaT_typenames_[(x) + 1] + +LUAI_DDEC const char *const luaT_typenames_[LUA_TOTALTAGS]; + + +LUAI_FUNC const char *luaT_objtypename (lua_State *L, const TValue *o); + +LUAI_FUNC const TValue *luaT_gettm (Table *events, TMS event, TString *ename); +LUAI_FUNC const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, + TMS event); +LUAI_FUNC void luaT_init (lua_State *L); + +LUAI_FUNC void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1, + const TValue *p2, TValue *p3, int hasres); +LUAI_FUNC int luaT_callbinTM (lua_State *L, const TValue *p1, const TValue *p2, + StkId res, TMS event); +LUAI_FUNC void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2, + StkId res, TMS event); +LUAI_FUNC int luaT_callorderTM (lua_State *L, const TValue *p1, + const TValue *p2, TMS event); + + + +#endif diff --git a/deps/rcheevos/test/lua/src/lua.c b/deps/rcheevos/test/lua/src/lua.c new file mode 100644 index 0000000000..3f082da6be --- /dev/null +++ b/deps/rcheevos/test/lua/src/lua.c @@ -0,0 +1,612 @@ +/* +** $Id: lua.c,v 1.230 2017/01/12 17:14:26 roberto Exp $ +** Lua stand-alone interpreter +** See Copyright Notice in lua.h +*/ + +#define lua_c + +#include "lprefix.h" + + +#include +#include +#include +#include + +#include "lua.h" + +#include "lauxlib.h" +#include "lualib.h" + + + +#if !defined(LUA_PROMPT) +#define LUA_PROMPT "> " +#define LUA_PROMPT2 ">> " +#endif + +#if !defined(LUA_PROGNAME) +#define LUA_PROGNAME "lua" +#endif + +#if !defined(LUA_MAXINPUT) +#define LUA_MAXINPUT 512 +#endif + +#if !defined(LUA_INIT_VAR) +#define LUA_INIT_VAR "LUA_INIT" +#endif + +#define LUA_INITVARVERSION LUA_INIT_VAR LUA_VERSUFFIX + + +/* +** lua_stdin_is_tty detects whether the standard input is a 'tty' (that +** is, whether we're running lua interactively). +*/ +#if !defined(lua_stdin_is_tty) /* { */ + +#if defined(LUA_USE_POSIX) /* { */ + +#include +#define lua_stdin_is_tty() isatty(0) + +#elif defined(LUA_USE_WINDOWS) /* }{ */ + +#include +#include + +#define lua_stdin_is_tty() _isatty(_fileno(stdin)) + +#else /* }{ */ + +/* ISO C definition */ +#define lua_stdin_is_tty() 1 /* assume stdin is a tty */ + +#endif /* } */ + +#endif /* } */ + + +/* +** lua_readline defines how to show a prompt and then read a line from +** the standard input. +** lua_saveline defines how to "save" a read line in a "history". +** lua_freeline defines how to free a line read by lua_readline. +*/ +#if !defined(lua_readline) /* { */ + +#if defined(LUA_USE_READLINE) /* { */ + +#include +#include +#define lua_readline(L,b,p) ((void)L, ((b)=readline(p)) != NULL) +#define lua_saveline(L,line) ((void)L, add_history(line)) +#define lua_freeline(L,b) ((void)L, free(b)) + +#else /* }{ */ + +#define lua_readline(L,b,p) \ + ((void)L, fputs(p, stdout), fflush(stdout), /* show prompt */ \ + fgets(b, LUA_MAXINPUT, stdin) != NULL) /* get line */ +#define lua_saveline(L,line) { (void)L; (void)line; } +#define lua_freeline(L,b) { (void)L; (void)b; } + +#endif /* } */ + +#endif /* } */ + + + + +static lua_State *globalL = NULL; + +static const char *progname = LUA_PROGNAME; + + +/* +** Hook set by signal function to stop the interpreter. +*/ +static void lstop (lua_State *L, lua_Debug *ar) { + (void)ar; /* unused arg. */ + lua_sethook(L, NULL, 0, 0); /* reset hook */ + luaL_error(L, "interrupted!"); +} + + +/* +** Function to be called at a C signal. Because a C signal cannot +** just change a Lua state (as there is no proper synchronization), +** this function only sets a hook that, when called, will stop the +** interpreter. +*/ +static void laction (int i) { + signal(i, SIG_DFL); /* if another SIGINT happens, terminate process */ + lua_sethook(globalL, lstop, LUA_MASKCALL | LUA_MASKRET | LUA_MASKCOUNT, 1); +} + + +static void print_usage (const char *badoption) { + lua_writestringerror("%s: ", progname); + if (badoption[1] == 'e' || badoption[1] == 'l') + lua_writestringerror("'%s' needs argument\n", badoption); + else + lua_writestringerror("unrecognized option '%s'\n", badoption); + lua_writestringerror( + "usage: %s [options] [script [args]]\n" + "Available options are:\n" + " -e stat execute string 'stat'\n" + " -i enter interactive mode after executing 'script'\n" + " -l name require library 'name'\n" + " -v show version information\n" + " -E ignore environment variables\n" + " -- stop handling options\n" + " - stop handling options and execute stdin\n" + , + progname); +} + + +/* +** Prints an error message, adding the program name in front of it +** (if present) +*/ +static void l_message (const char *pname, const char *msg) { + if (pname) lua_writestringerror("%s: ", pname); + lua_writestringerror("%s\n", msg); +} + + +/* +** Check whether 'status' is not OK and, if so, prints the error +** message on the top of the stack. It assumes that the error object +** is a string, as it was either generated by Lua or by 'msghandler'. +*/ +static int report (lua_State *L, int status) { + if (status != LUA_OK) { + const char *msg = lua_tostring(L, -1); + l_message(progname, msg); + lua_pop(L, 1); /* remove message */ + } + return status; +} + + +/* +** Message handler used to run all chunks +*/ +static int msghandler (lua_State *L) { + const char *msg = lua_tostring(L, 1); + if (msg == NULL) { /* is error object not a string? */ + if (luaL_callmeta(L, 1, "__tostring") && /* does it have a metamethod */ + lua_type(L, -1) == LUA_TSTRING) /* that produces a string? */ + return 1; /* that is the message */ + else + msg = lua_pushfstring(L, "(error object is a %s value)", + luaL_typename(L, 1)); + } + luaL_traceback(L, L, msg, 1); /* append a standard traceback */ + return 1; /* return the traceback */ +} + + +/* +** Interface to 'lua_pcall', which sets appropriate message function +** and C-signal handler. Used to run all chunks. +*/ +static int docall (lua_State *L, int narg, int nres) { + int status; + int base = lua_gettop(L) - narg; /* function index */ + lua_pushcfunction(L, msghandler); /* push message handler */ + lua_insert(L, base); /* put it under function and args */ + globalL = L; /* to be available to 'laction' */ + signal(SIGINT, laction); /* set C-signal handler */ + status = lua_pcall(L, narg, nres, base); + signal(SIGINT, SIG_DFL); /* reset C-signal handler */ + lua_remove(L, base); /* remove message handler from the stack */ + return status; +} + + +static void print_version (void) { + lua_writestring(LUA_COPYRIGHT, strlen(LUA_COPYRIGHT)); + lua_writeline(); +} + + +/* +** Create the 'arg' table, which stores all arguments from the +** command line ('argv'). It should be aligned so that, at index 0, +** it has 'argv[script]', which is the script name. The arguments +** to the script (everything after 'script') go to positive indices; +** other arguments (before the script name) go to negative indices. +** If there is no script name, assume interpreter's name as base. +*/ +static void createargtable (lua_State *L, char **argv, int argc, int script) { + int i, narg; + if (script == argc) script = 0; /* no script name? */ + narg = argc - (script + 1); /* number of positive indices */ + lua_createtable(L, narg, script + 1); + for (i = 0; i < argc; i++) { + lua_pushstring(L, argv[i]); + lua_rawseti(L, -2, i - script); + } + lua_setglobal(L, "arg"); +} + + +static int dochunk (lua_State *L, int status) { + if (status == LUA_OK) status = docall(L, 0, 0); + return report(L, status); +} + + +static int dofile (lua_State *L, const char *name) { + return dochunk(L, luaL_loadfile(L, name)); +} + + +static int dostring (lua_State *L, const char *s, const char *name) { + return dochunk(L, luaL_loadbuffer(L, s, strlen(s), name)); +} + + +/* +** Calls 'require(name)' and stores the result in a global variable +** with the given name. +*/ +static int dolibrary (lua_State *L, const char *name) { + int status; + lua_getglobal(L, "require"); + lua_pushstring(L, name); + status = docall(L, 1, 1); /* call 'require(name)' */ + if (status == LUA_OK) + lua_setglobal(L, name); /* global[name] = require return */ + return report(L, status); +} + + +/* +** Returns the string to be used as a prompt by the interpreter. +*/ +static const char *get_prompt (lua_State *L, int firstline) { + const char *p; + lua_getglobal(L, firstline ? "_PROMPT" : "_PROMPT2"); + p = lua_tostring(L, -1); + if (p == NULL) p = (firstline ? LUA_PROMPT : LUA_PROMPT2); + return p; +} + +/* mark in error messages for incomplete statements */ +#define EOFMARK "" +#define marklen (sizeof(EOFMARK)/sizeof(char) - 1) + + +/* +** Check whether 'status' signals a syntax error and the error +** message at the top of the stack ends with the above mark for +** incomplete statements. +*/ +static int incomplete (lua_State *L, int status) { + if (status == LUA_ERRSYNTAX) { + size_t lmsg; + const char *msg = lua_tolstring(L, -1, &lmsg); + if (lmsg >= marklen && strcmp(msg + lmsg - marklen, EOFMARK) == 0) { + lua_pop(L, 1); + return 1; + } + } + return 0; /* else... */ +} + + +/* +** Prompt the user, read a line, and push it into the Lua stack. +*/ +static int pushline (lua_State *L, int firstline) { + char buffer[LUA_MAXINPUT]; + char *b = buffer; + size_t l; + const char *prmt = get_prompt(L, firstline); + int readstatus = lua_readline(L, b, prmt); + if (readstatus == 0) + return 0; /* no input (prompt will be popped by caller) */ + lua_pop(L, 1); /* remove prompt */ + l = strlen(b); + if (l > 0 && b[l-1] == '\n') /* line ends with newline? */ + b[--l] = '\0'; /* remove it */ + if (firstline && b[0] == '=') /* for compatibility with 5.2, ... */ + lua_pushfstring(L, "return %s", b + 1); /* change '=' to 'return' */ + else + lua_pushlstring(L, b, l); + lua_freeline(L, b); + return 1; +} + + +/* +** Try to compile line on the stack as 'return ;'; on return, stack +** has either compiled chunk or original line (if compilation failed). +*/ +static int addreturn (lua_State *L) { + const char *line = lua_tostring(L, -1); /* original line */ + const char *retline = lua_pushfstring(L, "return %s;", line); + int status = luaL_loadbuffer(L, retline, strlen(retline), "=stdin"); + if (status == LUA_OK) { + lua_remove(L, -2); /* remove modified line */ + if (line[0] != '\0') /* non empty? */ + lua_saveline(L, line); /* keep history */ + } + else + lua_pop(L, 2); /* pop result from 'luaL_loadbuffer' and modified line */ + return status; +} + + +/* +** Read multiple lines until a complete Lua statement +*/ +static int multiline (lua_State *L) { + for (;;) { /* repeat until gets a complete statement */ + size_t len; + const char *line = lua_tolstring(L, 1, &len); /* get what it has */ + int status = luaL_loadbuffer(L, line, len, "=stdin"); /* try it */ + if (!incomplete(L, status) || !pushline(L, 0)) { + lua_saveline(L, line); /* keep history */ + return status; /* cannot or should not try to add continuation line */ + } + lua_pushliteral(L, "\n"); /* add newline... */ + lua_insert(L, -2); /* ...between the two lines */ + lua_concat(L, 3); /* join them */ + } +} + + +/* +** Read a line and try to load (compile) it first as an expression (by +** adding "return " in front of it) and second as a statement. Return +** the final status of load/call with the resulting function (if any) +** in the top of the stack. +*/ +static int loadline (lua_State *L) { + int status; + lua_settop(L, 0); + if (!pushline(L, 1)) + return -1; /* no input */ + if ((status = addreturn(L)) != LUA_OK) /* 'return ...' did not work? */ + status = multiline(L); /* try as command, maybe with continuation lines */ + lua_remove(L, 1); /* remove line from the stack */ + lua_assert(lua_gettop(L) == 1); + return status; +} + + +/* +** Prints (calling the Lua 'print' function) any values on the stack +*/ +static void l_print (lua_State *L) { + int n = lua_gettop(L); + if (n > 0) { /* any result to be printed? */ + luaL_checkstack(L, LUA_MINSTACK, "too many results to print"); + lua_getglobal(L, "print"); + lua_insert(L, 1); + if (lua_pcall(L, n, 0, 0) != LUA_OK) + l_message(progname, lua_pushfstring(L, "error calling 'print' (%s)", + lua_tostring(L, -1))); + } +} + + +/* +** Do the REPL: repeatedly read (load) a line, evaluate (call) it, and +** print any results. +*/ +static void doREPL (lua_State *L) { + int status; + const char *oldprogname = progname; + progname = NULL; /* no 'progname' on errors in interactive mode */ + while ((status = loadline(L)) != -1) { + if (status == LUA_OK) + status = docall(L, 0, LUA_MULTRET); + if (status == LUA_OK) l_print(L); + else report(L, status); + } + lua_settop(L, 0); /* clear stack */ + lua_writeline(); + progname = oldprogname; +} + + +/* +** Push on the stack the contents of table 'arg' from 1 to #arg +*/ +static int pushargs (lua_State *L) { + int i, n; + if (lua_getglobal(L, "arg") != LUA_TTABLE) + luaL_error(L, "'arg' is not a table"); + n = (int)luaL_len(L, -1); + luaL_checkstack(L, n + 3, "too many arguments to script"); + for (i = 1; i <= n; i++) + lua_rawgeti(L, -i, i); + lua_remove(L, -i); /* remove table from the stack */ + return n; +} + + +static int handle_script (lua_State *L, char **argv) { + int status; + const char *fname = argv[0]; + if (strcmp(fname, "-") == 0 && strcmp(argv[-1], "--") != 0) + fname = NULL; /* stdin */ + status = luaL_loadfile(L, fname); + if (status == LUA_OK) { + int n = pushargs(L); /* push arguments to script */ + status = docall(L, n, LUA_MULTRET); + } + return report(L, status); +} + + + +/* bits of various argument indicators in 'args' */ +#define has_error 1 /* bad option */ +#define has_i 2 /* -i */ +#define has_v 4 /* -v */ +#define has_e 8 /* -e */ +#define has_E 16 /* -E */ + +/* +** Traverses all arguments from 'argv', returning a mask with those +** needed before running any Lua code (or an error code if it finds +** any invalid argument). 'first' returns the first not-handled argument +** (either the script name or a bad argument in case of error). +*/ +static int collectargs (char **argv, int *first) { + int args = 0; + int i; + for (i = 1; argv[i] != NULL; i++) { + *first = i; + if (argv[i][0] != '-') /* not an option? */ + return args; /* stop handling options */ + switch (argv[i][1]) { /* else check option */ + case '-': /* '--' */ + if (argv[i][2] != '\0') /* extra characters after '--'? */ + return has_error; /* invalid option */ + *first = i + 1; + return args; + case '\0': /* '-' */ + return args; /* script "name" is '-' */ + case 'E': + if (argv[i][2] != '\0') /* extra characters after 1st? */ + return has_error; /* invalid option */ + args |= has_E; + break; + case 'i': + args |= has_i; /* (-i implies -v) *//* FALLTHROUGH */ + case 'v': + if (argv[i][2] != '\0') /* extra characters after 1st? */ + return has_error; /* invalid option */ + args |= has_v; + break; + case 'e': + args |= has_e; /* FALLTHROUGH */ + case 'l': /* both options need an argument */ + if (argv[i][2] == '\0') { /* no concatenated argument? */ + i++; /* try next 'argv' */ + if (argv[i] == NULL || argv[i][0] == '-') + return has_error; /* no next argument or it is another option */ + } + break; + default: /* invalid option */ + return has_error; + } + } + *first = i; /* no script name */ + return args; +} + + +/* +** Processes options 'e' and 'l', which involve running Lua code. +** Returns 0 if some code raises an error. +*/ +static int runargs (lua_State *L, char **argv, int n) { + int i; + for (i = 1; i < n; i++) { + int option = argv[i][1]; + lua_assert(argv[i][0] == '-'); /* already checked */ + if (option == 'e' || option == 'l') { + int status; + const char *extra = argv[i] + 2; /* both options need an argument */ + if (*extra == '\0') extra = argv[++i]; + lua_assert(extra != NULL); + status = (option == 'e') + ? dostring(L, extra, "=(command line)") + : dolibrary(L, extra); + if (status != LUA_OK) return 0; + } + } + return 1; +} + + + +static int handle_luainit (lua_State *L) { + const char *name = "=" LUA_INITVARVERSION; + const char *init = getenv(name + 1); + if (init == NULL) { + name = "=" LUA_INIT_VAR; + init = getenv(name + 1); /* try alternative name */ + } + if (init == NULL) return LUA_OK; + else if (init[0] == '@') + return dofile(L, init+1); + else + return dostring(L, init, name); +} + + +/* +** Main body of stand-alone interpreter (to be called in protected mode). +** Reads the options and handles them all. +*/ +static int pmain (lua_State *L) { + int argc = (int)lua_tointeger(L, 1); + char **argv = (char **)lua_touserdata(L, 2); + int script; + int args = collectargs(argv, &script); + luaL_checkversion(L); /* check that interpreter has correct version */ + if (argv[0] && argv[0][0]) progname = argv[0]; + if (args == has_error) { /* bad arg? */ + print_usage(argv[script]); /* 'script' has index of bad arg. */ + return 0; + } + if (args & has_v) /* option '-v'? */ + print_version(); + if (args & has_E) { /* option '-E'? */ + lua_pushboolean(L, 1); /* signal for libraries to ignore env. vars. */ + lua_setfield(L, LUA_REGISTRYINDEX, "LUA_NOENV"); + } + luaL_openlibs(L); /* open standard libraries */ + createargtable(L, argv, argc, script); /* create table 'arg' */ + if (!(args & has_E)) { /* no option '-E'? */ + if (handle_luainit(L) != LUA_OK) /* run LUA_INIT */ + return 0; /* error running LUA_INIT */ + } + if (!runargs(L, argv, script)) /* execute arguments -e and -l */ + return 0; /* something failed */ + if (script < argc && /* execute main script (if there is one) */ + handle_script(L, argv + script) != LUA_OK) + return 0; + if (args & has_i) /* -i option? */ + doREPL(L); /* do read-eval-print loop */ + else if (script == argc && !(args & (has_e | has_v))) { /* no arguments? */ + if (lua_stdin_is_tty()) { /* running in interactive mode? */ + print_version(); + doREPL(L); /* do read-eval-print loop */ + } + else dofile(L, NULL); /* executes stdin as a file */ + } + lua_pushboolean(L, 1); /* signal no errors */ + return 1; +} + + +int main (int argc, char **argv) { + int status, result; + lua_State *L = luaL_newstate(); /* create state */ + if (L == NULL) { + l_message(argv[0], "cannot create state: not enough memory"); + return EXIT_FAILURE; + } + lua_pushcfunction(L, &pmain); /* to call 'pmain' in protected mode */ + lua_pushinteger(L, argc); /* 1st argument */ + lua_pushlightuserdata(L, argv); /* 2nd argument */ + status = lua_pcall(L, 2, 1, 0); /* do the call */ + result = lua_toboolean(L, -1); /* get result */ + report(L, status); + lua_close(L); + return (result && status == LUA_OK) ? EXIT_SUCCESS : EXIT_FAILURE; +} + diff --git a/deps/rcheevos/test/lua/src/lua.h b/deps/rcheevos/test/lua/src/lua.h new file mode 100644 index 0000000000..26c0e2d698 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lua.h @@ -0,0 +1,486 @@ +/* +** $Id: lua.h,v 1.332 2016/12/22 15:51:20 roberto Exp $ +** Lua - A Scripting Language +** Lua.org, PUC-Rio, Brazil (http://www.lua.org) +** See Copyright Notice at the end of this file +*/ + + +#ifndef lua_h +#define lua_h + +#include +#include + + +#include "luaconf.h" + + +#define LUA_VERSION_MAJOR "5" +#define LUA_VERSION_MINOR "3" +#define LUA_VERSION_NUM 503 +#define LUA_VERSION_RELEASE "4" + +#define LUA_VERSION "Lua " LUA_VERSION_MAJOR "." LUA_VERSION_MINOR +#define LUA_RELEASE LUA_VERSION "." LUA_VERSION_RELEASE +#define LUA_COPYRIGHT LUA_RELEASE " Copyright (C) 1994-2017 Lua.org, PUC-Rio" +#define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo, W. Celes" + + +/* mark for precompiled code ('Lua') */ +#define LUA_SIGNATURE "\x1bLua" + +/* option for multiple returns in 'lua_pcall' and 'lua_call' */ +#define LUA_MULTRET (-1) + + +/* +** Pseudo-indices +** (-LUAI_MAXSTACK is the minimum valid index; we keep some free empty +** space after that to help overflow detection) +*/ +#define LUA_REGISTRYINDEX (-LUAI_MAXSTACK - 1000) +#define lua_upvalueindex(i) (LUA_REGISTRYINDEX - (i)) + + +/* thread status */ +#define LUA_OK 0 +#define LUA_YIELD 1 +#define LUA_ERRRUN 2 +#define LUA_ERRSYNTAX 3 +#define LUA_ERRMEM 4 +#define LUA_ERRGCMM 5 +#define LUA_ERRERR 6 + + +typedef struct lua_State lua_State; + + +/* +** basic types +*/ +#define LUA_TNONE (-1) + +#define LUA_TNIL 0 +#define LUA_TBOOLEAN 1 +#define LUA_TLIGHTUSERDATA 2 +#define LUA_TNUMBER 3 +#define LUA_TSTRING 4 +#define LUA_TTABLE 5 +#define LUA_TFUNCTION 6 +#define LUA_TUSERDATA 7 +#define LUA_TTHREAD 8 + +#define LUA_NUMTAGS 9 + + + +/* minimum Lua stack available to a C function */ +#define LUA_MINSTACK 20 + + +/* predefined values in the registry */ +#define LUA_RIDX_MAINTHREAD 1 +#define LUA_RIDX_GLOBALS 2 +#define LUA_RIDX_LAST LUA_RIDX_GLOBALS + + +/* type of numbers in Lua */ +typedef LUA_NUMBER lua_Number; + + +/* type for integer functions */ +typedef LUA_INTEGER lua_Integer; + +/* unsigned integer type */ +typedef LUA_UNSIGNED lua_Unsigned; + +/* type for continuation-function contexts */ +typedef LUA_KCONTEXT lua_KContext; + + +/* +** Type for C functions registered with Lua +*/ +typedef int (*lua_CFunction) (lua_State *L); + +/* +** Type for continuation functions +*/ +typedef int (*lua_KFunction) (lua_State *L, int status, lua_KContext ctx); + + +/* +** Type for functions that read/write blocks when loading/dumping Lua chunks +*/ +typedef const char * (*lua_Reader) (lua_State *L, void *ud, size_t *sz); + +typedef int (*lua_Writer) (lua_State *L, const void *p, size_t sz, void *ud); + + +/* +** Type for memory-allocation functions +*/ +typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize, size_t nsize); + + + +/* +** generic extra include file +*/ +#if defined(LUA_USER_H) +#include LUA_USER_H +#endif + + +/* +** RCS ident string +*/ +extern const char lua_ident[]; + + +/* +** state manipulation +*/ +LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud); +LUA_API void (lua_close) (lua_State *L); +LUA_API lua_State *(lua_newthread) (lua_State *L); + +LUA_API lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf); + + +LUA_API const lua_Number *(lua_version) (lua_State *L); + + +/* +** basic stack manipulation +*/ +LUA_API int (lua_absindex) (lua_State *L, int idx); +LUA_API int (lua_gettop) (lua_State *L); +LUA_API void (lua_settop) (lua_State *L, int idx); +LUA_API void (lua_pushvalue) (lua_State *L, int idx); +LUA_API void (lua_rotate) (lua_State *L, int idx, int n); +LUA_API void (lua_copy) (lua_State *L, int fromidx, int toidx); +LUA_API int (lua_checkstack) (lua_State *L, int n); + +LUA_API void (lua_xmove) (lua_State *from, lua_State *to, int n); + + +/* +** access functions (stack -> C) +*/ + +LUA_API int (lua_isnumber) (lua_State *L, int idx); +LUA_API int (lua_isstring) (lua_State *L, int idx); +LUA_API int (lua_iscfunction) (lua_State *L, int idx); +LUA_API int (lua_isinteger) (lua_State *L, int idx); +LUA_API int (lua_isuserdata) (lua_State *L, int idx); +LUA_API int (lua_type) (lua_State *L, int idx); +LUA_API const char *(lua_typename) (lua_State *L, int tp); + +LUA_API lua_Number (lua_tonumberx) (lua_State *L, int idx, int *isnum); +LUA_API lua_Integer (lua_tointegerx) (lua_State *L, int idx, int *isnum); +LUA_API int (lua_toboolean) (lua_State *L, int idx); +LUA_API const char *(lua_tolstring) (lua_State *L, int idx, size_t *len); +LUA_API size_t (lua_rawlen) (lua_State *L, int idx); +LUA_API lua_CFunction (lua_tocfunction) (lua_State *L, int idx); +LUA_API void *(lua_touserdata) (lua_State *L, int idx); +LUA_API lua_State *(lua_tothread) (lua_State *L, int idx); +LUA_API const void *(lua_topointer) (lua_State *L, int idx); + + +/* +** Comparison and arithmetic functions +*/ + +#define LUA_OPADD 0 /* ORDER TM, ORDER OP */ +#define LUA_OPSUB 1 +#define LUA_OPMUL 2 +#define LUA_OPMOD 3 +#define LUA_OPPOW 4 +#define LUA_OPDIV 5 +#define LUA_OPIDIV 6 +#define LUA_OPBAND 7 +#define LUA_OPBOR 8 +#define LUA_OPBXOR 9 +#define LUA_OPSHL 10 +#define LUA_OPSHR 11 +#define LUA_OPUNM 12 +#define LUA_OPBNOT 13 + +LUA_API void (lua_arith) (lua_State *L, int op); + +#define LUA_OPEQ 0 +#define LUA_OPLT 1 +#define LUA_OPLE 2 + +LUA_API int (lua_rawequal) (lua_State *L, int idx1, int idx2); +LUA_API int (lua_compare) (lua_State *L, int idx1, int idx2, int op); + + +/* +** push functions (C -> stack) +*/ +LUA_API void (lua_pushnil) (lua_State *L); +LUA_API void (lua_pushnumber) (lua_State *L, lua_Number n); +LUA_API void (lua_pushinteger) (lua_State *L, lua_Integer n); +LUA_API const char *(lua_pushlstring) (lua_State *L, const char *s, size_t len); +LUA_API const char *(lua_pushstring) (lua_State *L, const char *s); +LUA_API const char *(lua_pushvfstring) (lua_State *L, const char *fmt, + va_list argp); +LUA_API const char *(lua_pushfstring) (lua_State *L, const char *fmt, ...); +LUA_API void (lua_pushcclosure) (lua_State *L, lua_CFunction fn, int n); +LUA_API void (lua_pushboolean) (lua_State *L, int b); +LUA_API void (lua_pushlightuserdata) (lua_State *L, void *p); +LUA_API int (lua_pushthread) (lua_State *L); + + +/* +** get functions (Lua -> stack) +*/ +LUA_API int (lua_getglobal) (lua_State *L, const char *name); +LUA_API int (lua_gettable) (lua_State *L, int idx); +LUA_API int (lua_getfield) (lua_State *L, int idx, const char *k); +LUA_API int (lua_geti) (lua_State *L, int idx, lua_Integer n); +LUA_API int (lua_rawget) (lua_State *L, int idx); +LUA_API int (lua_rawgeti) (lua_State *L, int idx, lua_Integer n); +LUA_API int (lua_rawgetp) (lua_State *L, int idx, const void *p); + +LUA_API void (lua_createtable) (lua_State *L, int narr, int nrec); +LUA_API void *(lua_newuserdata) (lua_State *L, size_t sz); +LUA_API int (lua_getmetatable) (lua_State *L, int objindex); +LUA_API int (lua_getuservalue) (lua_State *L, int idx); + + +/* +** set functions (stack -> Lua) +*/ +LUA_API void (lua_setglobal) (lua_State *L, const char *name); +LUA_API void (lua_settable) (lua_State *L, int idx); +LUA_API void (lua_setfield) (lua_State *L, int idx, const char *k); +LUA_API void (lua_seti) (lua_State *L, int idx, lua_Integer n); +LUA_API void (lua_rawset) (lua_State *L, int idx); +LUA_API void (lua_rawseti) (lua_State *L, int idx, lua_Integer n); +LUA_API void (lua_rawsetp) (lua_State *L, int idx, const void *p); +LUA_API int (lua_setmetatable) (lua_State *L, int objindex); +LUA_API void (lua_setuservalue) (lua_State *L, int idx); + + +/* +** 'load' and 'call' functions (load and run Lua code) +*/ +LUA_API void (lua_callk) (lua_State *L, int nargs, int nresults, + lua_KContext ctx, lua_KFunction k); +#define lua_call(L,n,r) lua_callk(L, (n), (r), 0, NULL) + +LUA_API int (lua_pcallk) (lua_State *L, int nargs, int nresults, int errfunc, + lua_KContext ctx, lua_KFunction k); +#define lua_pcall(L,n,r,f) lua_pcallk(L, (n), (r), (f), 0, NULL) + +LUA_API int (lua_load) (lua_State *L, lua_Reader reader, void *dt, + const char *chunkname, const char *mode); + +LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data, int strip); + + +/* +** coroutine functions +*/ +LUA_API int (lua_yieldk) (lua_State *L, int nresults, lua_KContext ctx, + lua_KFunction k); +LUA_API int (lua_resume) (lua_State *L, lua_State *from, int narg); +LUA_API int (lua_status) (lua_State *L); +LUA_API int (lua_isyieldable) (lua_State *L); + +#define lua_yield(L,n) lua_yieldk(L, (n), 0, NULL) + + +/* +** garbage-collection function and options +*/ + +#define LUA_GCSTOP 0 +#define LUA_GCRESTART 1 +#define LUA_GCCOLLECT 2 +#define LUA_GCCOUNT 3 +#define LUA_GCCOUNTB 4 +#define LUA_GCSTEP 5 +#define LUA_GCSETPAUSE 6 +#define LUA_GCSETSTEPMUL 7 +#define LUA_GCISRUNNING 9 + +LUA_API int (lua_gc) (lua_State *L, int what, int data); + + +/* +** miscellaneous functions +*/ + +LUA_API int (lua_error) (lua_State *L); + +LUA_API int (lua_next) (lua_State *L, int idx); + +LUA_API void (lua_concat) (lua_State *L, int n); +LUA_API void (lua_len) (lua_State *L, int idx); + +LUA_API size_t (lua_stringtonumber) (lua_State *L, const char *s); + +LUA_API lua_Alloc (lua_getallocf) (lua_State *L, void **ud); +LUA_API void (lua_setallocf) (lua_State *L, lua_Alloc f, void *ud); + + + +/* +** {============================================================== +** some useful macros +** =============================================================== +*/ + +#define lua_getextraspace(L) ((void *)((char *)(L) - LUA_EXTRASPACE)) + +#define lua_tonumber(L,i) lua_tonumberx(L,(i),NULL) +#define lua_tointeger(L,i) lua_tointegerx(L,(i),NULL) + +#define lua_pop(L,n) lua_settop(L, -(n)-1) + +#define lua_newtable(L) lua_createtable(L, 0, 0) + +#define lua_register(L,n,f) (lua_pushcfunction(L, (f)), lua_setglobal(L, (n))) + +#define lua_pushcfunction(L,f) lua_pushcclosure(L, (f), 0) + +#define lua_isfunction(L,n) (lua_type(L, (n)) == LUA_TFUNCTION) +#define lua_istable(L,n) (lua_type(L, (n)) == LUA_TTABLE) +#define lua_islightuserdata(L,n) (lua_type(L, (n)) == LUA_TLIGHTUSERDATA) +#define lua_isnil(L,n) (lua_type(L, (n)) == LUA_TNIL) +#define lua_isboolean(L,n) (lua_type(L, (n)) == LUA_TBOOLEAN) +#define lua_isthread(L,n) (lua_type(L, (n)) == LUA_TTHREAD) +#define lua_isnone(L,n) (lua_type(L, (n)) == LUA_TNONE) +#define lua_isnoneornil(L, n) (lua_type(L, (n)) <= 0) + +#define lua_pushliteral(L, s) lua_pushstring(L, "" s) + +#define lua_pushglobaltable(L) \ + ((void)lua_rawgeti(L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS)) + +#define lua_tostring(L,i) lua_tolstring(L, (i), NULL) + + +#define lua_insert(L,idx) lua_rotate(L, (idx), 1) + +#define lua_remove(L,idx) (lua_rotate(L, (idx), -1), lua_pop(L, 1)) + +#define lua_replace(L,idx) (lua_copy(L, -1, (idx)), lua_pop(L, 1)) + +/* }============================================================== */ + + +/* +** {============================================================== +** compatibility macros for unsigned conversions +** =============================================================== +*/ +#if defined(LUA_COMPAT_APIINTCASTS) + +#define lua_pushunsigned(L,n) lua_pushinteger(L, (lua_Integer)(n)) +#define lua_tounsignedx(L,i,is) ((lua_Unsigned)lua_tointegerx(L,i,is)) +#define lua_tounsigned(L,i) lua_tounsignedx(L,(i),NULL) + +#endif +/* }============================================================== */ + +/* +** {====================================================================== +** Debug API +** ======================================================================= +*/ + + +/* +** Event codes +*/ +#define LUA_HOOKCALL 0 +#define LUA_HOOKRET 1 +#define LUA_HOOKLINE 2 +#define LUA_HOOKCOUNT 3 +#define LUA_HOOKTAILCALL 4 + + +/* +** Event masks +*/ +#define LUA_MASKCALL (1 << LUA_HOOKCALL) +#define LUA_MASKRET (1 << LUA_HOOKRET) +#define LUA_MASKLINE (1 << LUA_HOOKLINE) +#define LUA_MASKCOUNT (1 << LUA_HOOKCOUNT) + +typedef struct lua_Debug lua_Debug; /* activation record */ + + +/* Functions to be called by the debugger in specific events */ +typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar); + + +LUA_API int (lua_getstack) (lua_State *L, int level, lua_Debug *ar); +LUA_API int (lua_getinfo) (lua_State *L, const char *what, lua_Debug *ar); +LUA_API const char *(lua_getlocal) (lua_State *L, const lua_Debug *ar, int n); +LUA_API const char *(lua_setlocal) (lua_State *L, const lua_Debug *ar, int n); +LUA_API const char *(lua_getupvalue) (lua_State *L, int funcindex, int n); +LUA_API const char *(lua_setupvalue) (lua_State *L, int funcindex, int n); + +LUA_API void *(lua_upvalueid) (lua_State *L, int fidx, int n); +LUA_API void (lua_upvaluejoin) (lua_State *L, int fidx1, int n1, + int fidx2, int n2); + +LUA_API void (lua_sethook) (lua_State *L, lua_Hook func, int mask, int count); +LUA_API lua_Hook (lua_gethook) (lua_State *L); +LUA_API int (lua_gethookmask) (lua_State *L); +LUA_API int (lua_gethookcount) (lua_State *L); + + +struct lua_Debug { + int event; + const char *name; /* (n) */ + const char *namewhat; /* (n) 'global', 'local', 'field', 'method' */ + const char *what; /* (S) 'Lua', 'C', 'main', 'tail' */ + const char *source; /* (S) */ + int currentline; /* (l) */ + int linedefined; /* (S) */ + int lastlinedefined; /* (S) */ + unsigned char nups; /* (u) number of upvalues */ + unsigned char nparams;/* (u) number of parameters */ + char isvararg; /* (u) */ + char istailcall; /* (t) */ + char short_src[LUA_IDSIZE]; /* (S) */ + /* private part */ + struct CallInfo *i_ci; /* active function */ +}; + +/* }====================================================================== */ + + +/****************************************************************************** +* Copyright (C) 1994-2017 Lua.org, PUC-Rio. +* +* Permission is hereby granted, free of charge, to any person obtaining +* a copy of this software and associated documentation files (the +* "Software"), to deal in the Software without restriction, including +* without limitation the rights to use, copy, modify, merge, publish, +* distribute, sublicense, and/or sell copies of the Software, and to +* permit persons to whom the Software is furnished to do so, subject to +* the following conditions: +* +* The above copyright notice and this permission notice shall be +* included in all copies or substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +******************************************************************************/ + + +#endif diff --git a/deps/rcheevos/test/lua/src/lua.hpp b/deps/rcheevos/test/lua/src/lua.hpp new file mode 100644 index 0000000000..ec417f5946 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lua.hpp @@ -0,0 +1,9 @@ +// lua.hpp +// Lua header files for C++ +// <> not supplied automatically because Lua also compiles as C++ + +extern "C" { +#include "lua.h" +#include "lualib.h" +#include "lauxlib.h" +} diff --git a/deps/rcheevos/test/lua/src/luac.c b/deps/rcheevos/test/lua/src/luac.c new file mode 100644 index 0000000000..c0c91d017a --- /dev/null +++ b/deps/rcheevos/test/lua/src/luac.c @@ -0,0 +1,449 @@ +/* +** $Id: luac.c,v 1.75 2015/03/12 01:58:27 lhf Exp $ +** Lua compiler (saves bytecodes to files; also lists bytecodes) +** See Copyright Notice in lua.h +*/ + +#define luac_c +#define LUA_CORE + +#include "lprefix.h" + +#include +#include +#include +#include +#include + +#include "lua.h" +#include "lauxlib.h" + +#include "lobject.h" +#include "lstate.h" +#include "lundump.h" + +static void PrintFunction(const Proto* f, int full); +#define luaU_print PrintFunction + +#define PROGNAME "luac" /* default program name */ +#define OUTPUT PROGNAME ".out" /* default output file */ + +static int listing=0; /* list bytecodes? */ +static int dumping=1; /* dump bytecodes? */ +static int stripping=0; /* strip debug information? */ +static char Output[]={ OUTPUT }; /* default output file name */ +static const char* output=Output; /* actual output file name */ +static const char* progname=PROGNAME; /* actual program name */ + +static void fatal(const char* message) +{ + fprintf(stderr,"%s: %s\n",progname,message); + exit(EXIT_FAILURE); +} + +static void cannot(const char* what) +{ + fprintf(stderr,"%s: cannot %s %s: %s\n",progname,what,output,strerror(errno)); + exit(EXIT_FAILURE); +} + +static void usage(const char* message) +{ + if (*message=='-') + fprintf(stderr,"%s: unrecognized option '%s'\n",progname,message); + else + fprintf(stderr,"%s: %s\n",progname,message); + fprintf(stderr, + "usage: %s [options] [filenames]\n" + "Available options are:\n" + " -l list (use -l -l for full listing)\n" + " -o name output to file 'name' (default is \"%s\")\n" + " -p parse only\n" + " -s strip debug information\n" + " -v show version information\n" + " -- stop handling options\n" + " - stop handling options and process stdin\n" + ,progname,Output); + exit(EXIT_FAILURE); +} + +#define IS(s) (strcmp(argv[i],s)==0) + +static int doargs(int argc, char* argv[]) +{ + int i; + int version=0; + if (argv[0]!=NULL && *argv[0]!=0) progname=argv[0]; + for (i=1; itop+(i)) + +static const Proto* combine(lua_State* L, int n) +{ + if (n==1) + return toproto(L,-1); + else + { + Proto* f; + int i=n; + if (lua_load(L,reader,&i,"=(" PROGNAME ")",NULL)!=LUA_OK) fatal(lua_tostring(L,-1)); + f=toproto(L,-1); + for (i=0; ip[i]=toproto(L,i-n-1); + if (f->p[i]->sizeupvalues>0) f->p[i]->upvalues[0].instack=0; + } + f->sizelineinfo=0; + return f; + } +} + +static int writer(lua_State* L, const void* p, size_t size, void* u) +{ + UNUSED(L); + return (fwrite(p,size,1,(FILE*)u)!=1) && (size!=0); +} + +static int pmain(lua_State* L) +{ + int argc=(int)lua_tointeger(L,1); + char** argv=(char**)lua_touserdata(L,2); + const Proto* f; + int i; + if (!lua_checkstack(L,argc)) fatal("too many input files"); + for (i=0; i1); + if (dumping) + { + FILE* D= (output==NULL) ? stdout : fopen(output,"wb"); + if (D==NULL) cannot("open"); + lua_lock(L); + luaU_dump(L,f,writer,D,stripping); + lua_unlock(L); + if (ferror(D)) cannot("write"); + if (fclose(D)) cannot("close"); + } + return 0; +} + +int main(int argc, char* argv[]) +{ + lua_State* L; + int i=doargs(argc,argv); + argc-=i; argv+=i; + if (argc<=0) usage("no input files given"); + L=luaL_newstate(); + if (L==NULL) fatal("cannot create state: not enough memory"); + lua_pushcfunction(L,&pmain); + lua_pushinteger(L,argc); + lua_pushlightuserdata(L,argv); + if (lua_pcall(L,2,0,0)!=LUA_OK) fatal(lua_tostring(L,-1)); + lua_close(L); + return EXIT_SUCCESS; +} + +/* +** $Id: luac.c,v 1.75 2015/03/12 01:58:27 lhf Exp $ +** print bytecodes +** See Copyright Notice in lua.h +*/ + +#include +#include + +#define luac_c +#define LUA_CORE + +#include "ldebug.h" +#include "lobject.h" +#include "lopcodes.h" + +#define VOID(p) ((const void*)(p)) + +static void PrintString(const TString* ts) +{ + const char* s=getstr(ts); + size_t i,n=tsslen(ts); + printf("%c",'"'); + for (i=0; ik[i]; + switch (ttype(o)) + { + case LUA_TNIL: + printf("nil"); + break; + case LUA_TBOOLEAN: + printf(bvalue(o) ? "true" : "false"); + break; + case LUA_TNUMFLT: + { + char buff[100]; + sprintf(buff,LUA_NUMBER_FMT,fltvalue(o)); + printf("%s",buff); + if (buff[strspn(buff,"-0123456789")]=='\0') printf(".0"); + break; + } + case LUA_TNUMINT: + printf(LUA_INTEGER_FMT,ivalue(o)); + break; + case LUA_TSHRSTR: case LUA_TLNGSTR: + PrintString(tsvalue(o)); + break; + default: /* cannot happen */ + printf("? type=%d",ttype(o)); + break; + } +} + +#define UPVALNAME(x) ((f->upvalues[x].name) ? getstr(f->upvalues[x].name) : "-") +#define MYK(x) (-1-(x)) + +static void PrintCode(const Proto* f) +{ + const Instruction* code=f->code; + int pc,n=f->sizecode; + for (pc=0; pc0) printf("[%d]\t",line); else printf("[-]\t"); + printf("%-9s\t",luaP_opnames[o]); + switch (getOpMode(o)) + { + case iABC: + printf("%d",a); + if (getBMode(o)!=OpArgN) printf(" %d",ISK(b) ? (MYK(INDEXK(b))) : b); + if (getCMode(o)!=OpArgN) printf(" %d",ISK(c) ? (MYK(INDEXK(c))) : c); + break; + case iABx: + printf("%d",a); + if (getBMode(o)==OpArgK) printf(" %d",MYK(bx)); + if (getBMode(o)==OpArgU) printf(" %d",bx); + break; + case iAsBx: + printf("%d %d",a,sbx); + break; + case iAx: + printf("%d",MYK(ax)); + break; + } + switch (o) + { + case OP_LOADK: + printf("\t; "); PrintConstant(f,bx); + break; + case OP_GETUPVAL: + case OP_SETUPVAL: + printf("\t; %s",UPVALNAME(b)); + break; + case OP_GETTABUP: + printf("\t; %s",UPVALNAME(b)); + if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); } + break; + case OP_SETTABUP: + printf("\t; %s",UPVALNAME(a)); + if (ISK(b)) { printf(" "); PrintConstant(f,INDEXK(b)); } + if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); } + break; + case OP_GETTABLE: + case OP_SELF: + if (ISK(c)) { printf("\t; "); PrintConstant(f,INDEXK(c)); } + break; + case OP_SETTABLE: + case OP_ADD: + case OP_SUB: + case OP_MUL: + case OP_POW: + case OP_DIV: + case OP_IDIV: + case OP_BAND: + case OP_BOR: + case OP_BXOR: + case OP_SHL: + case OP_SHR: + case OP_EQ: + case OP_LT: + case OP_LE: + if (ISK(b) || ISK(c)) + { + printf("\t; "); + if (ISK(b)) PrintConstant(f,INDEXK(b)); else printf("-"); + printf(" "); + if (ISK(c)) PrintConstant(f,INDEXK(c)); else printf("-"); + } + break; + case OP_JMP: + case OP_FORLOOP: + case OP_FORPREP: + case OP_TFORLOOP: + printf("\t; to %d",sbx+pc+2); + break; + case OP_CLOSURE: + printf("\t; %p",VOID(f->p[bx])); + break; + case OP_SETLIST: + if (c==0) printf("\t; %d",(int)code[++pc]); else printf("\t; %d",c); + break; + case OP_EXTRAARG: + printf("\t; "); PrintConstant(f,ax); + break; + default: + break; + } + printf("\n"); + } +} + +#define SS(x) ((x==1)?"":"s") +#define S(x) (int)(x),SS(x) + +static void PrintHeader(const Proto* f) +{ + const char* s=f->source ? getstr(f->source) : "=?"; + if (*s=='@' || *s=='=') + s++; + else if (*s==LUA_SIGNATURE[0]) + s="(bstring)"; + else + s="(string)"; + printf("\n%s <%s:%d,%d> (%d instruction%s at %p)\n", + (f->linedefined==0)?"main":"function",s, + f->linedefined,f->lastlinedefined, + S(f->sizecode),VOID(f)); + printf("%d%s param%s, %d slot%s, %d upvalue%s, ", + (int)(f->numparams),f->is_vararg?"+":"",SS(f->numparams), + S(f->maxstacksize),S(f->sizeupvalues)); + printf("%d local%s, %d constant%s, %d function%s\n", + S(f->sizelocvars),S(f->sizek),S(f->sizep)); +} + +static void PrintDebug(const Proto* f) +{ + int i,n; + n=f->sizek; + printf("constants (%d) for %p:\n",n,VOID(f)); + for (i=0; isizelocvars; + printf("locals (%d) for %p:\n",n,VOID(f)); + for (i=0; ilocvars[i].varname),f->locvars[i].startpc+1,f->locvars[i].endpc+1); + } + n=f->sizeupvalues; + printf("upvalues (%d) for %p:\n",n,VOID(f)); + for (i=0; iupvalues[i].instack,f->upvalues[i].idx); + } +} + +static void PrintFunction(const Proto* f, int full) +{ + int i,n=f->sizep; + PrintHeader(f); + PrintCode(f); + if (full) PrintDebug(f); + for (i=0; ip[i],full); +} diff --git a/deps/rcheevos/test/lua/src/luaconf.h b/deps/rcheevos/test/lua/src/luaconf.h new file mode 100644 index 0000000000..f37bea0964 --- /dev/null +++ b/deps/rcheevos/test/lua/src/luaconf.h @@ -0,0 +1,783 @@ +/* +** $Id: luaconf.h,v 1.259 2016/12/22 13:08:50 roberto Exp $ +** Configuration file for Lua +** See Copyright Notice in lua.h +*/ + + +#ifndef luaconf_h +#define luaconf_h + +#include +#include + + +/* +** =================================================================== +** Search for "@@" to find all configurable definitions. +** =================================================================== +*/ + + +/* +** {==================================================================== +** System Configuration: macros to adapt (if needed) Lua to some +** particular platform, for instance compiling it with 32-bit numbers or +** restricting it to C89. +** ===================================================================== +*/ + +/* +@@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats. You +** can also define LUA_32BITS in the make file, but changing here you +** ensure that all software connected to Lua will be compiled with the +** same configuration. +*/ +/* #define LUA_32BITS */ + + +/* +@@ LUA_USE_C89 controls the use of non-ISO-C89 features. +** Define it if you want Lua to avoid the use of a few C99 features +** or Windows-specific features on Windows. +*/ +/* #define LUA_USE_C89 */ + + +/* +** By default, Lua on Windows use (some) specific Windows features +*/ +#if !defined(LUA_USE_C89) && defined(_WIN32) && !defined(_WIN32_WCE) +#define LUA_USE_WINDOWS /* enable goodies for regular Windows */ +#endif + + +#if defined(LUA_USE_WINDOWS) +#define LUA_DL_DLL /* enable support for DLL */ +#define LUA_USE_C89 /* broadly, Windows is C89 */ +#endif + + +#if defined(LUA_USE_LINUX) +#define LUA_USE_POSIX +#define LUA_USE_DLOPEN /* needs an extra library: -ldl */ +#define LUA_USE_READLINE /* needs some extra libraries */ +#endif + + +#if defined(LUA_USE_MACOSX) +#define LUA_USE_POSIX +#define LUA_USE_DLOPEN /* MacOS does not need -ldl */ +#define LUA_USE_READLINE /* needs an extra library: -lreadline */ +#endif + + +/* +@@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for +** C89 ('long' and 'double'); Windows always has '__int64', so it does +** not need to use this case. +*/ +#if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS) +#define LUA_C89_NUMBERS +#endif + + + +/* +@@ LUAI_BITSINT defines the (minimum) number of bits in an 'int'. +*/ +/* avoid undefined shifts */ +#if ((INT_MAX >> 15) >> 15) >= 1 +#define LUAI_BITSINT 32 +#else +/* 'int' always must have at least 16 bits */ +#define LUAI_BITSINT 16 +#endif + + +/* +@@ LUA_INT_TYPE defines the type for Lua integers. +@@ LUA_FLOAT_TYPE defines the type for Lua floats. +** Lua should work fine with any mix of these options (if supported +** by your C compiler). The usual configurations are 64-bit integers +** and 'double' (the default), 32-bit integers and 'float' (for +** restricted platforms), and 'long'/'double' (for C compilers not +** compliant with C99, which may not have support for 'long long'). +*/ + +/* predefined options for LUA_INT_TYPE */ +#define LUA_INT_INT 1 +#define LUA_INT_LONG 2 +#define LUA_INT_LONGLONG 3 + +/* predefined options for LUA_FLOAT_TYPE */ +#define LUA_FLOAT_FLOAT 1 +#define LUA_FLOAT_DOUBLE 2 +#define LUA_FLOAT_LONGDOUBLE 3 + +#if defined(LUA_32BITS) /* { */ +/* +** 32-bit integers and 'float' +*/ +#if LUAI_BITSINT >= 32 /* use 'int' if big enough */ +#define LUA_INT_TYPE LUA_INT_INT +#else /* otherwise use 'long' */ +#define LUA_INT_TYPE LUA_INT_LONG +#endif +#define LUA_FLOAT_TYPE LUA_FLOAT_FLOAT + +#elif defined(LUA_C89_NUMBERS) /* }{ */ +/* +** largest types available for C89 ('long' and 'double') +*/ +#define LUA_INT_TYPE LUA_INT_LONG +#define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE + +#endif /* } */ + + +/* +** default configuration for 64-bit Lua ('long long' and 'double') +*/ +#if !defined(LUA_INT_TYPE) +#define LUA_INT_TYPE LUA_INT_LONGLONG +#endif + +#if !defined(LUA_FLOAT_TYPE) +#define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE +#endif + +/* }================================================================== */ + + + + +/* +** {================================================================== +** Configuration for Paths. +** =================================================================== +*/ + +/* +** LUA_PATH_SEP is the character that separates templates in a path. +** LUA_PATH_MARK is the string that marks the substitution points in a +** template. +** LUA_EXEC_DIR in a Windows path is replaced by the executable's +** directory. +*/ +#define LUA_PATH_SEP ";" +#define LUA_PATH_MARK "?" +#define LUA_EXEC_DIR "!" + + +/* +@@ LUA_PATH_DEFAULT is the default path that Lua uses to look for +** Lua libraries. +@@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for +** C libraries. +** CHANGE them if your machine has a non-conventional directory +** hierarchy or if you want to install your libraries in +** non-conventional directories. +*/ +#define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR +#if defined(_WIN32) /* { */ +/* +** In Windows, any exclamation mark ('!') in the path is replaced by the +** path of the directory of the executable file of the current process. +*/ +#define LUA_LDIR "!\\lua\\" +#define LUA_CDIR "!\\" +#define LUA_SHRDIR "!\\..\\share\\lua\\" LUA_VDIR "\\" +#define LUA_PATH_DEFAULT \ + LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ + LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" \ + LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \ + ".\\?.lua;" ".\\?\\init.lua" +#define LUA_CPATH_DEFAULT \ + LUA_CDIR"?.dll;" \ + LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \ + LUA_CDIR"loadall.dll;" ".\\?.dll" + +#else /* }{ */ + +#define LUA_ROOT "/usr/local/" +#define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR "/" +#define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR "/" +#define LUA_PATH_DEFAULT \ + LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ + LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" \ + "./?.lua;" "./?/init.lua" +#define LUA_CPATH_DEFAULT \ + LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so" +#endif /* } */ + + +/* +@@ LUA_DIRSEP is the directory separator (for submodules). +** CHANGE it if your machine does not use "/" as the directory separator +** and is not Windows. (On Windows Lua automatically uses "\".) +*/ +#if defined(_WIN32) +#define LUA_DIRSEP "\\" +#else +#define LUA_DIRSEP "/" +#endif + +/* }================================================================== */ + + +/* +** {================================================================== +** Marks for exported symbols in the C code +** =================================================================== +*/ + +/* +@@ LUA_API is a mark for all core API functions. +@@ LUALIB_API is a mark for all auxiliary library functions. +@@ LUAMOD_API is a mark for all standard library opening functions. +** CHANGE them if you need to define those functions in some special way. +** For instance, if you want to create one Windows DLL with the core and +** the libraries, you may want to use the following definition (define +** LUA_BUILD_AS_DLL to get it). +*/ +#if defined(LUA_BUILD_AS_DLL) /* { */ + +#if defined(LUA_CORE) || defined(LUA_LIB) /* { */ +#define LUA_API __declspec(dllexport) +#else /* }{ */ +#define LUA_API __declspec(dllimport) +#endif /* } */ + +#else /* }{ */ + +#define LUA_API extern + +#endif /* } */ + + +/* more often than not the libs go together with the core */ +#define LUALIB_API LUA_API +#define LUAMOD_API LUALIB_API + + +/* +@@ LUAI_FUNC is a mark for all extern functions that are not to be +** exported to outside modules. +@@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables +** that are not to be exported to outside modules (LUAI_DDEF for +** definitions and LUAI_DDEC for declarations). +** CHANGE them if you need to mark them in some special way. Elf/gcc +** (versions 3.2 and later) mark them as "hidden" to optimize access +** when Lua is compiled as a shared library. Not all elf targets support +** this attribute. Unfortunately, gcc does not offer a way to check +** whether the target offers that support, and those without support +** give a warning about it. To avoid these warnings, change to the +** default definition. +*/ +#if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ + defined(__ELF__) /* { */ +#define LUAI_FUNC __attribute__((visibility("hidden"))) extern +#else /* }{ */ +#define LUAI_FUNC extern +#endif /* } */ + +#define LUAI_DDEC LUAI_FUNC +#define LUAI_DDEF /* empty */ + +/* }================================================================== */ + + +/* +** {================================================================== +** Compatibility with previous versions +** =================================================================== +*/ + +/* +@@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2. +@@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1. +** You can define it to get all options, or change specific options +** to fit your specific needs. +*/ +#if defined(LUA_COMPAT_5_2) /* { */ + +/* +@@ LUA_COMPAT_MATHLIB controls the presence of several deprecated +** functions in the mathematical library. +*/ +#define LUA_COMPAT_MATHLIB + +/* +@@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'. +*/ +#define LUA_COMPAT_BITLIB + +/* +@@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod. +*/ +#define LUA_COMPAT_IPAIRS + +/* +@@ LUA_COMPAT_APIINTCASTS controls the presence of macros for +** manipulating other integer types (lua_pushunsigned, lua_tounsigned, +** luaL_checkint, luaL_checklong, etc.) +*/ +#define LUA_COMPAT_APIINTCASTS + +#endif /* } */ + + +#if defined(LUA_COMPAT_5_1) /* { */ + +/* Incompatibilities from 5.2 -> 5.3 */ +#define LUA_COMPAT_MATHLIB +#define LUA_COMPAT_APIINTCASTS + +/* +@@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'. +** You can replace it with 'table.unpack'. +*/ +#define LUA_COMPAT_UNPACK + +/* +@@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'. +** You can replace it with 'package.searchers'. +*/ +#define LUA_COMPAT_LOADERS + +/* +@@ macro 'lua_cpcall' emulates deprecated function lua_cpcall. +** You can call your C function directly (with light C functions). +*/ +#define lua_cpcall(L,f,u) \ + (lua_pushcfunction(L, (f)), \ + lua_pushlightuserdata(L,(u)), \ + lua_pcall(L,1,0,0)) + + +/* +@@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library. +** You can rewrite 'log10(x)' as 'log(x, 10)'. +*/ +#define LUA_COMPAT_LOG10 + +/* +@@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base +** library. You can rewrite 'loadstring(s)' as 'load(s)'. +*/ +#define LUA_COMPAT_LOADSTRING + +/* +@@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library. +*/ +#define LUA_COMPAT_MAXN + +/* +@@ The following macros supply trivial compatibility for some +** changes in the API. The macros themselves document how to +** change your code to avoid using them. +*/ +#define lua_strlen(L,i) lua_rawlen(L, (i)) + +#define lua_objlen(L,i) lua_rawlen(L, (i)) + +#define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ) +#define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT) + +/* +@@ LUA_COMPAT_MODULE controls compatibility with previous +** module functions 'module' (Lua) and 'luaL_register' (C). +*/ +#define LUA_COMPAT_MODULE + +#endif /* } */ + + +/* +@@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a +@@ a float mark ('.0'). +** This macro is not on by default even in compatibility mode, +** because this is not really an incompatibility. +*/ +/* #define LUA_COMPAT_FLOATSTRING */ + +/* }================================================================== */ + + + +/* +** {================================================================== +** Configuration for Numbers. +** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_* +** satisfy your needs. +** =================================================================== +*/ + +/* +@@ LUA_NUMBER is the floating-point type used by Lua. +@@ LUAI_UACNUMBER is the result of a 'default argument promotion' +@@ over a floating number. +@@ l_mathlim(x) corrects limit name 'x' to the proper float type +** by prefixing it with one of FLT/DBL/LDBL. +@@ LUA_NUMBER_FRMLEN is the length modifier for writing floats. +@@ LUA_NUMBER_FMT is the format for writing floats. +@@ lua_number2str converts a float to a string. +@@ l_mathop allows the addition of an 'l' or 'f' to all math operations. +@@ l_floor takes the floor of a float. +@@ lua_str2number converts a decimal numeric string to a number. +*/ + + +/* The following definitions are good for most cases here */ + +#define l_floor(x) (l_mathop(floor)(x)) + +#define lua_number2str(s,sz,n) \ + l_sprintf((s), sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)(n)) + +/* +@@ lua_numbertointeger converts a float number to an integer, or +** returns 0 if float is not within the range of a lua_Integer. +** (The range comparisons are tricky because of rounding. The tests +** here assume a two-complement representation, where MININTEGER always +** has an exact representation as a float; MAXINTEGER may not have one, +** and therefore its conversion to float may have an ill-defined value.) +*/ +#define lua_numbertointeger(n,p) \ + ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \ + (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \ + (*(p) = (LUA_INTEGER)(n), 1)) + + +/* now the variable definitions */ + +#if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT /* { single float */ + +#define LUA_NUMBER float + +#define l_mathlim(n) (FLT_##n) + +#define LUAI_UACNUMBER double + +#define LUA_NUMBER_FRMLEN "" +#define LUA_NUMBER_FMT "%.7g" + +#define l_mathop(op) op##f + +#define lua_str2number(s,p) strtof((s), (p)) + + +#elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE /* }{ long double */ + +#define LUA_NUMBER long double + +#define l_mathlim(n) (LDBL_##n) + +#define LUAI_UACNUMBER long double + +#define LUA_NUMBER_FRMLEN "L" +#define LUA_NUMBER_FMT "%.19Lg" + +#define l_mathop(op) op##l + +#define lua_str2number(s,p) strtold((s), (p)) + +#elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE /* }{ double */ + +#define LUA_NUMBER double + +#define l_mathlim(n) (DBL_##n) + +#define LUAI_UACNUMBER double + +#define LUA_NUMBER_FRMLEN "" +#define LUA_NUMBER_FMT "%.14g" + +#define l_mathop(op) op + +#define lua_str2number(s,p) strtod((s), (p)) + +#else /* }{ */ + +#error "numeric float type not defined" + +#endif /* } */ + + + +/* +@@ LUA_INTEGER is the integer type used by Lua. +** +@@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER. +** +@@ LUAI_UACINT is the result of a 'default argument promotion' +@@ over a lUA_INTEGER. +@@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers. +@@ LUA_INTEGER_FMT is the format for writing integers. +@@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER. +@@ LUA_MININTEGER is the minimum value for a LUA_INTEGER. +@@ lua_integer2str converts an integer to a string. +*/ + + +/* The following definitions are good for most cases here */ + +#define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d" + +#define LUAI_UACINT LUA_INTEGER + +#define lua_integer2str(s,sz,n) \ + l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n)) + +/* +** use LUAI_UACINT here to avoid problems with promotions (which +** can turn a comparison between unsigneds into a signed comparison) +*/ +#define LUA_UNSIGNED unsigned LUAI_UACINT + + +/* now the variable definitions */ + +#if LUA_INT_TYPE == LUA_INT_INT /* { int */ + +#define LUA_INTEGER int +#define LUA_INTEGER_FRMLEN "" + +#define LUA_MAXINTEGER INT_MAX +#define LUA_MININTEGER INT_MIN + +#elif LUA_INT_TYPE == LUA_INT_LONG /* }{ long */ + +#define LUA_INTEGER long +#define LUA_INTEGER_FRMLEN "l" + +#define LUA_MAXINTEGER LONG_MAX +#define LUA_MININTEGER LONG_MIN + +#elif LUA_INT_TYPE == LUA_INT_LONGLONG /* }{ long long */ + +/* use presence of macro LLONG_MAX as proxy for C99 compliance */ +#if defined(LLONG_MAX) /* { */ +/* use ISO C99 stuff */ + +#define LUA_INTEGER long long +#define LUA_INTEGER_FRMLEN "ll" + +#define LUA_MAXINTEGER LLONG_MAX +#define LUA_MININTEGER LLONG_MIN + +#elif defined(LUA_USE_WINDOWS) /* }{ */ +/* in Windows, can use specific Windows types */ + +#define LUA_INTEGER __int64 +#define LUA_INTEGER_FRMLEN "I64" + +#define LUA_MAXINTEGER _I64_MAX +#define LUA_MININTEGER _I64_MIN + +#else /* }{ */ + +#error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \ + or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)" + +#endif /* } */ + +#else /* }{ */ + +#error "numeric integer type not defined" + +#endif /* } */ + +/* }================================================================== */ + + +/* +** {================================================================== +** Dependencies with C99 and other C details +** =================================================================== +*/ + +/* +@@ l_sprintf is equivalent to 'snprintf' or 'sprintf' in C89. +** (All uses in Lua have only one format item.) +*/ +#if !defined(LUA_USE_C89) +#define l_sprintf(s,sz,f,i) snprintf(s,sz,f,i) +#else +#define l_sprintf(s,sz,f,i) ((void)(sz), sprintf(s,f,i)) +#endif + + +/* +@@ lua_strx2number converts an hexadecimal numeric string to a number. +** In C99, 'strtod' does that conversion. Otherwise, you can +** leave 'lua_strx2number' undefined and Lua will provide its own +** implementation. +*/ +#if !defined(LUA_USE_C89) +#define lua_strx2number(s,p) lua_str2number(s,p) +#endif + + +/* +@@ lua_number2strx converts a float to an hexadecimal numeric string. +** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that. +** Otherwise, you can leave 'lua_number2strx' undefined and Lua will +** provide its own implementation. +*/ +#if !defined(LUA_USE_C89) +#define lua_number2strx(L,b,sz,f,n) \ + ((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n))) +#endif + + +/* +** 'strtof' and 'opf' variants for math functions are not valid in +** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the +** availability of these variants. ('math.h' is already included in +** all files that use these macros.) +*/ +#if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF)) +#undef l_mathop /* variants not available */ +#undef lua_str2number +#define l_mathop(op) (lua_Number)op /* no variant */ +#define lua_str2number(s,p) ((lua_Number)strtod((s), (p))) +#endif + + +/* +@@ LUA_KCONTEXT is the type of the context ('ctx') for continuation +** functions. It must be a numerical type; Lua will use 'intptr_t' if +** available, otherwise it will use 'ptrdiff_t' (the nearest thing to +** 'intptr_t' in C89) +*/ +#define LUA_KCONTEXT ptrdiff_t + +#if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \ + __STDC_VERSION__ >= 199901L +#include +#if defined(INTPTR_MAX) /* even in C99 this type is optional */ +#undef LUA_KCONTEXT +#define LUA_KCONTEXT intptr_t +#endif +#endif + + +/* +@@ lua_getlocaledecpoint gets the locale "radix character" (decimal point). +** Change that if you do not want to use C locales. (Code using this +** macro must include header 'locale.h'.) +*/ +#if !defined(lua_getlocaledecpoint) +#define lua_getlocaledecpoint() (localeconv()->decimal_point[0]) +#endif + +/* }================================================================== */ + + +/* +** {================================================================== +** Language Variations +** ===================================================================== +*/ + +/* +@@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some +** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from +** numbers to strings. Define LUA_NOCVTS2N to turn off automatic +** coercion from strings to numbers. +*/ +/* #define LUA_NOCVTN2S */ +/* #define LUA_NOCVTS2N */ + + +/* +@@ LUA_USE_APICHECK turns on several consistency checks on the C API. +** Define it as a help when debugging C code. +*/ +#if defined(LUA_USE_APICHECK) +#include +#define luai_apicheck(l,e) assert(e) +#endif + +/* }================================================================== */ + + +/* +** {================================================================== +** Macros that affect the API and must be stable (that is, must be the +** same when you compile Lua and when you compile code that links to +** Lua). You probably do not want/need to change them. +** ===================================================================== +*/ + +/* +@@ LUAI_MAXSTACK limits the size of the Lua stack. +** CHANGE it if you need a different limit. This limit is arbitrary; +** its only purpose is to stop Lua from consuming unlimited stack +** space (and to reserve some numbers for pseudo-indices). +*/ +#if LUAI_BITSINT >= 32 +#define LUAI_MAXSTACK 1000000 +#else +#define LUAI_MAXSTACK 15000 +#endif + + +/* +@@ LUA_EXTRASPACE defines the size of a raw memory area associated with +** a Lua state with very fast access. +** CHANGE it if you need a different size. +*/ +#define LUA_EXTRASPACE (sizeof(void *)) + + +/* +@@ LUA_IDSIZE gives the maximum size for the description of the source +@@ of a function in debug information. +** CHANGE it if you want a different size. +*/ +#define LUA_IDSIZE 60 + + +/* +@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. +** CHANGE it if it uses too much C-stack space. (For long double, +** 'string.format("%.99f", -1e4932)' needs 5034 bytes, so a +** smaller buffer would force a memory allocation for each call to +** 'string.format'.) +*/ +#if LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE +#define LUAL_BUFFERSIZE 8192 +#else +#define LUAL_BUFFERSIZE ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer))) +#endif + +/* }================================================================== */ + + +/* +@@ LUA_QL describes how error messages quote program elements. +** Lua does not use these macros anymore; they are here for +** compatibility only. +*/ +#define LUA_QL(x) "'" x "'" +#define LUA_QS LUA_QL("%s") + + + + +/* =================================================================== */ + +/* +** Local configuration. You can use this space to add your redefinitions +** without modifying the main part of the file. +*/ + + + + + +#endif + diff --git a/deps/rcheevos/test/lua/src/lualib.h b/deps/rcheevos/test/lua/src/lualib.h new file mode 100644 index 0000000000..6c0bc4cb08 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lualib.h @@ -0,0 +1,61 @@ +/* +** $Id: lualib.h,v 1.45 2017/01/12 17:14:26 roberto Exp $ +** Lua standard libraries +** See Copyright Notice in lua.h +*/ + + +#ifndef lualib_h +#define lualib_h + +#include "lua.h" + + +/* version suffix for environment variable names */ +#define LUA_VERSUFFIX "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR + + +LUAMOD_API int (luaopen_base) (lua_State *L); + +#define LUA_COLIBNAME "coroutine" +LUAMOD_API int (luaopen_coroutine) (lua_State *L); + +#define LUA_TABLIBNAME "table" +LUAMOD_API int (luaopen_table) (lua_State *L); + +#define LUA_IOLIBNAME "io" +LUAMOD_API int (luaopen_io) (lua_State *L); + +#define LUA_OSLIBNAME "os" +LUAMOD_API int (luaopen_os) (lua_State *L); + +#define LUA_STRLIBNAME "string" +LUAMOD_API int (luaopen_string) (lua_State *L); + +#define LUA_UTF8LIBNAME "utf8" +LUAMOD_API int (luaopen_utf8) (lua_State *L); + +#define LUA_BITLIBNAME "bit32" +LUAMOD_API int (luaopen_bit32) (lua_State *L); + +#define LUA_MATHLIBNAME "math" +LUAMOD_API int (luaopen_math) (lua_State *L); + +#define LUA_DBLIBNAME "debug" +LUAMOD_API int (luaopen_debug) (lua_State *L); + +#define LUA_LOADLIBNAME "package" +LUAMOD_API int (luaopen_package) (lua_State *L); + + +/* open all previous libraries */ +LUALIB_API void (luaL_openlibs) (lua_State *L); + + + +#if !defined(lua_assert) +#define lua_assert(x) ((void)0) +#endif + + +#endif diff --git a/deps/rcheevos/test/lua/src/lundump.c b/deps/rcheevos/test/lua/src/lundump.c new file mode 100644 index 0000000000..4080af9c0d --- /dev/null +++ b/deps/rcheevos/test/lua/src/lundump.c @@ -0,0 +1,279 @@ +/* +** $Id: lundump.c,v 2.44 2015/11/02 16:09:30 roberto Exp $ +** load precompiled Lua chunks +** See Copyright Notice in lua.h +*/ + +#define lundump_c +#define LUA_CORE + +#include "lprefix.h" + + +#include + +#include "lua.h" + +#include "ldebug.h" +#include "ldo.h" +#include "lfunc.h" +#include "lmem.h" +#include "lobject.h" +#include "lstring.h" +#include "lundump.h" +#include "lzio.h" + + +#if !defined(luai_verifycode) +#define luai_verifycode(L,b,f) /* empty */ +#endif + + +typedef struct { + lua_State *L; + ZIO *Z; + const char *name; +} LoadState; + + +static l_noret error(LoadState *S, const char *why) { + luaO_pushfstring(S->L, "%s: %s precompiled chunk", S->name, why); + luaD_throw(S->L, LUA_ERRSYNTAX); +} + + +/* +** All high-level loads go through LoadVector; you can change it to +** adapt to the endianness of the input +*/ +#define LoadVector(S,b,n) LoadBlock(S,b,(n)*sizeof((b)[0])) + +static void LoadBlock (LoadState *S, void *b, size_t size) { + if (luaZ_read(S->Z, b, size) != 0) + error(S, "truncated"); +} + + +#define LoadVar(S,x) LoadVector(S,&x,1) + + +static lu_byte LoadByte (LoadState *S) { + lu_byte x; + LoadVar(S, x); + return x; +} + + +static int LoadInt (LoadState *S) { + int x; + LoadVar(S, x); + return x; +} + + +static lua_Number LoadNumber (LoadState *S) { + lua_Number x; + LoadVar(S, x); + return x; +} + + +static lua_Integer LoadInteger (LoadState *S) { + lua_Integer x; + LoadVar(S, x); + return x; +} + + +static TString *LoadString (LoadState *S) { + size_t size = LoadByte(S); + if (size == 0xFF) + LoadVar(S, size); + if (size == 0) + return NULL; + else if (--size <= LUAI_MAXSHORTLEN) { /* short string? */ + char buff[LUAI_MAXSHORTLEN]; + LoadVector(S, buff, size); + return luaS_newlstr(S->L, buff, size); + } + else { /* long string */ + TString *ts = luaS_createlngstrobj(S->L, size); + LoadVector(S, getstr(ts), size); /* load directly in final place */ + return ts; + } +} + + +static void LoadCode (LoadState *S, Proto *f) { + int n = LoadInt(S); + f->code = luaM_newvector(S->L, n, Instruction); + f->sizecode = n; + LoadVector(S, f->code, n); +} + + +static void LoadFunction(LoadState *S, Proto *f, TString *psource); + + +static void LoadConstants (LoadState *S, Proto *f) { + int i; + int n = LoadInt(S); + f->k = luaM_newvector(S->L, n, TValue); + f->sizek = n; + for (i = 0; i < n; i++) + setnilvalue(&f->k[i]); + for (i = 0; i < n; i++) { + TValue *o = &f->k[i]; + int t = LoadByte(S); + switch (t) { + case LUA_TNIL: + setnilvalue(o); + break; + case LUA_TBOOLEAN: + setbvalue(o, LoadByte(S)); + break; + case LUA_TNUMFLT: + setfltvalue(o, LoadNumber(S)); + break; + case LUA_TNUMINT: + setivalue(o, LoadInteger(S)); + break; + case LUA_TSHRSTR: + case LUA_TLNGSTR: + setsvalue2n(S->L, o, LoadString(S)); + break; + default: + lua_assert(0); + } + } +} + + +static void LoadProtos (LoadState *S, Proto *f) { + int i; + int n = LoadInt(S); + f->p = luaM_newvector(S->L, n, Proto *); + f->sizep = n; + for (i = 0; i < n; i++) + f->p[i] = NULL; + for (i = 0; i < n; i++) { + f->p[i] = luaF_newproto(S->L); + LoadFunction(S, f->p[i], f->source); + } +} + + +static void LoadUpvalues (LoadState *S, Proto *f) { + int i, n; + n = LoadInt(S); + f->upvalues = luaM_newvector(S->L, n, Upvaldesc); + f->sizeupvalues = n; + for (i = 0; i < n; i++) + f->upvalues[i].name = NULL; + for (i = 0; i < n; i++) { + f->upvalues[i].instack = LoadByte(S); + f->upvalues[i].idx = LoadByte(S); + } +} + + +static void LoadDebug (LoadState *S, Proto *f) { + int i, n; + n = LoadInt(S); + f->lineinfo = luaM_newvector(S->L, n, int); + f->sizelineinfo = n; + LoadVector(S, f->lineinfo, n); + n = LoadInt(S); + f->locvars = luaM_newvector(S->L, n, LocVar); + f->sizelocvars = n; + for (i = 0; i < n; i++) + f->locvars[i].varname = NULL; + for (i = 0; i < n; i++) { + f->locvars[i].varname = LoadString(S); + f->locvars[i].startpc = LoadInt(S); + f->locvars[i].endpc = LoadInt(S); + } + n = LoadInt(S); + for (i = 0; i < n; i++) + f->upvalues[i].name = LoadString(S); +} + + +static void LoadFunction (LoadState *S, Proto *f, TString *psource) { + f->source = LoadString(S); + if (f->source == NULL) /* no source in dump? */ + f->source = psource; /* reuse parent's source */ + f->linedefined = LoadInt(S); + f->lastlinedefined = LoadInt(S); + f->numparams = LoadByte(S); + f->is_vararg = LoadByte(S); + f->maxstacksize = LoadByte(S); + LoadCode(S, f); + LoadConstants(S, f); + LoadUpvalues(S, f); + LoadProtos(S, f); + LoadDebug(S, f); +} + + +static void checkliteral (LoadState *S, const char *s, const char *msg) { + char buff[sizeof(LUA_SIGNATURE) + sizeof(LUAC_DATA)]; /* larger than both */ + size_t len = strlen(s); + LoadVector(S, buff, len); + if (memcmp(s, buff, len) != 0) + error(S, msg); +} + + +static void fchecksize (LoadState *S, size_t size, const char *tname) { + if (LoadByte(S) != size) + error(S, luaO_pushfstring(S->L, "%s size mismatch in", tname)); +} + + +#define checksize(S,t) fchecksize(S,sizeof(t),#t) + +static void checkHeader (LoadState *S) { + checkliteral(S, LUA_SIGNATURE + 1, "not a"); /* 1st char already checked */ + if (LoadByte(S) != LUAC_VERSION) + error(S, "version mismatch in"); + if (LoadByte(S) != LUAC_FORMAT) + error(S, "format mismatch in"); + checkliteral(S, LUAC_DATA, "corrupted"); + checksize(S, int); + checksize(S, size_t); + checksize(S, Instruction); + checksize(S, lua_Integer); + checksize(S, lua_Number); + if (LoadInteger(S) != LUAC_INT) + error(S, "endianness mismatch in"); + if (LoadNumber(S) != LUAC_NUM) + error(S, "float format mismatch in"); +} + + +/* +** load precompiled chunk +*/ +LClosure *luaU_undump(lua_State *L, ZIO *Z, const char *name) { + LoadState S; + LClosure *cl; + if (*name == '@' || *name == '=') + S.name = name + 1; + else if (*name == LUA_SIGNATURE[0]) + S.name = "binary string"; + else + S.name = name; + S.L = L; + S.Z = Z; + checkHeader(&S); + cl = luaF_newLclosure(L, LoadByte(&S)); + setclLvalue(L, L->top, cl); + luaD_inctop(L); + cl->p = luaF_newproto(L); + LoadFunction(&S, cl->p, NULL); + lua_assert(cl->nupvalues == cl->p->sizeupvalues); + luai_verifycode(L, buff, cl->p); + return cl; +} + diff --git a/deps/rcheevos/test/lua/src/lundump.h b/deps/rcheevos/test/lua/src/lundump.h new file mode 100644 index 0000000000..aa5cc82f1b --- /dev/null +++ b/deps/rcheevos/test/lua/src/lundump.h @@ -0,0 +1,32 @@ +/* +** $Id: lundump.h,v 1.45 2015/09/08 15:41:05 roberto Exp $ +** load precompiled Lua chunks +** See Copyright Notice in lua.h +*/ + +#ifndef lundump_h +#define lundump_h + +#include "llimits.h" +#include "lobject.h" +#include "lzio.h" + + +/* data to catch conversion errors */ +#define LUAC_DATA "\x19\x93\r\n\x1a\n" + +#define LUAC_INT 0x5678 +#define LUAC_NUM cast_num(370.5) + +#define MYINT(s) (s[0]-'0') +#define LUAC_VERSION (MYINT(LUA_VERSION_MAJOR)*16+MYINT(LUA_VERSION_MINOR)) +#define LUAC_FORMAT 0 /* this is the official format */ + +/* load one chunk; from lundump.c */ +LUAI_FUNC LClosure* luaU_undump (lua_State* L, ZIO* Z, const char* name); + +/* dump one chunk; from ldump.c */ +LUAI_FUNC int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, + void* data, int strip); + +#endif diff --git a/deps/rcheevos/test/lua/src/lutf8lib.c b/deps/rcheevos/test/lua/src/lutf8lib.c new file mode 100644 index 0000000000..de9e3dcdd6 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lutf8lib.c @@ -0,0 +1,256 @@ +/* +** $Id: lutf8lib.c,v 1.16 2016/12/22 13:08:50 roberto Exp $ +** Standard library for UTF-8 manipulation +** See Copyright Notice in lua.h +*/ + +#define lutf8lib_c +#define LUA_LIB + +#include "lprefix.h" + + +#include +#include +#include +#include + +#include "lua.h" + +#include "lauxlib.h" +#include "lualib.h" + +#define MAXUNICODE 0x10FFFF + +#define iscont(p) ((*(p) & 0xC0) == 0x80) + + +/* from strlib */ +/* translate a relative string position: negative means back from end */ +static lua_Integer u_posrelat (lua_Integer pos, size_t len) { + if (pos >= 0) return pos; + else if (0u - (size_t)pos > len) return 0; + else return (lua_Integer)len + pos + 1; +} + + +/* +** Decode one UTF-8 sequence, returning NULL if byte sequence is invalid. +*/ +static const char *utf8_decode (const char *o, int *val) { + static const unsigned int limits[] = {0xFF, 0x7F, 0x7FF, 0xFFFF}; + const unsigned char *s = (const unsigned char *)o; + unsigned int c = s[0]; + unsigned int res = 0; /* final result */ + if (c < 0x80) /* ascii? */ + res = c; + else { + int count = 0; /* to count number of continuation bytes */ + while (c & 0x40) { /* still have continuation bytes? */ + int cc = s[++count]; /* read next byte */ + if ((cc & 0xC0) != 0x80) /* not a continuation byte? */ + return NULL; /* invalid byte sequence */ + res = (res << 6) | (cc & 0x3F); /* add lower 6 bits from cont. byte */ + c <<= 1; /* to test next bit */ + } + res |= ((c & 0x7F) << (count * 5)); /* add first byte */ + if (count > 3 || res > MAXUNICODE || res <= limits[count]) + return NULL; /* invalid byte sequence */ + s += count; /* skip continuation bytes read */ + } + if (val) *val = res; + return (const char *)s + 1; /* +1 to include first byte */ +} + + +/* +** utf8len(s [, i [, j]]) --> number of characters that start in the +** range [i,j], or nil + current position if 's' is not well formed in +** that interval +*/ +static int utflen (lua_State *L) { + int n = 0; + size_t len; + const char *s = luaL_checklstring(L, 1, &len); + lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len); + lua_Integer posj = u_posrelat(luaL_optinteger(L, 3, -1), len); + luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 2, + "initial position out of string"); + luaL_argcheck(L, --posj < (lua_Integer)len, 3, + "final position out of string"); + while (posi <= posj) { + const char *s1 = utf8_decode(s + posi, NULL); + if (s1 == NULL) { /* conversion error? */ + lua_pushnil(L); /* return nil ... */ + lua_pushinteger(L, posi + 1); /* ... and current position */ + return 2; + } + posi = s1 - s; + n++; + } + lua_pushinteger(L, n); + return 1; +} + + +/* +** codepoint(s, [i, [j]]) -> returns codepoints for all characters +** that start in the range [i,j] +*/ +static int codepoint (lua_State *L) { + size_t len; + const char *s = luaL_checklstring(L, 1, &len); + lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len); + lua_Integer pose = u_posrelat(luaL_optinteger(L, 3, posi), len); + int n; + const char *se; + luaL_argcheck(L, posi >= 1, 2, "out of range"); + luaL_argcheck(L, pose <= (lua_Integer)len, 3, "out of range"); + if (posi > pose) return 0; /* empty interval; return no values */ + if (pose - posi >= INT_MAX) /* (lua_Integer -> int) overflow? */ + return luaL_error(L, "string slice too long"); + n = (int)(pose - posi) + 1; + luaL_checkstack(L, n, "string slice too long"); + n = 0; + se = s + pose; + for (s += posi - 1; s < se;) { + int code; + s = utf8_decode(s, &code); + if (s == NULL) + return luaL_error(L, "invalid UTF-8 code"); + lua_pushinteger(L, code); + n++; + } + return n; +} + + +static void pushutfchar (lua_State *L, int arg) { + lua_Integer code = luaL_checkinteger(L, arg); + luaL_argcheck(L, 0 <= code && code <= MAXUNICODE, arg, "value out of range"); + lua_pushfstring(L, "%U", (long)code); +} + + +/* +** utfchar(n1, n2, ...) -> char(n1)..char(n2)... +*/ +static int utfchar (lua_State *L) { + int n = lua_gettop(L); /* number of arguments */ + if (n == 1) /* optimize common case of single char */ + pushutfchar(L, 1); + else { + int i; + luaL_Buffer b; + luaL_buffinit(L, &b); + for (i = 1; i <= n; i++) { + pushutfchar(L, i); + luaL_addvalue(&b); + } + luaL_pushresult(&b); + } + return 1; +} + + +/* +** offset(s, n, [i]) -> index where n-th character counting from +** position 'i' starts; 0 means character at 'i'. +*/ +static int byteoffset (lua_State *L) { + size_t len; + const char *s = luaL_checklstring(L, 1, &len); + lua_Integer n = luaL_checkinteger(L, 2); + lua_Integer posi = (n >= 0) ? 1 : len + 1; + posi = u_posrelat(luaL_optinteger(L, 3, posi), len); + luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 3, + "position out of range"); + if (n == 0) { + /* find beginning of current byte sequence */ + while (posi > 0 && iscont(s + posi)) posi--; + } + else { + if (iscont(s + posi)) + luaL_error(L, "initial position is a continuation byte"); + if (n < 0) { + while (n < 0 && posi > 0) { /* move back */ + do { /* find beginning of previous character */ + posi--; + } while (posi > 0 && iscont(s + posi)); + n++; + } + } + else { + n--; /* do not move for 1st character */ + while (n > 0 && posi < (lua_Integer)len) { + do { /* find beginning of next character */ + posi++; + } while (iscont(s + posi)); /* (cannot pass final '\0') */ + n--; + } + } + } + if (n == 0) /* did it find given character? */ + lua_pushinteger(L, posi + 1); + else /* no such character */ + lua_pushnil(L); + return 1; +} + + +static int iter_aux (lua_State *L) { + size_t len; + const char *s = luaL_checklstring(L, 1, &len); + lua_Integer n = lua_tointeger(L, 2) - 1; + if (n < 0) /* first iteration? */ + n = 0; /* start from here */ + else if (n < (lua_Integer)len) { + n++; /* skip current byte */ + while (iscont(s + n)) n++; /* and its continuations */ + } + if (n >= (lua_Integer)len) + return 0; /* no more codepoints */ + else { + int code; + const char *next = utf8_decode(s + n, &code); + if (next == NULL || iscont(next)) + return luaL_error(L, "invalid UTF-8 code"); + lua_pushinteger(L, n + 1); + lua_pushinteger(L, code); + return 2; + } +} + + +static int iter_codes (lua_State *L) { + luaL_checkstring(L, 1); + lua_pushcfunction(L, iter_aux); + lua_pushvalue(L, 1); + lua_pushinteger(L, 0); + return 3; +} + + +/* pattern to match a single UTF-8 character */ +#define UTF8PATT "[\0-\x7F\xC2-\xF4][\x80-\xBF]*" + + +static const luaL_Reg funcs[] = { + {"offset", byteoffset}, + {"codepoint", codepoint}, + {"char", utfchar}, + {"len", utflen}, + {"codes", iter_codes}, + /* placeholders */ + {"charpattern", NULL}, + {NULL, NULL} +}; + + +LUAMOD_API int luaopen_utf8 (lua_State *L) { + luaL_newlib(L, funcs); + lua_pushlstring(L, UTF8PATT, sizeof(UTF8PATT)/sizeof(char) - 1); + lua_setfield(L, -2, "charpattern"); + return 1; +} + diff --git a/deps/rcheevos/test/lua/src/lvm.c b/deps/rcheevos/test/lua/src/lvm.c new file mode 100644 index 0000000000..84ade6b2fa --- /dev/null +++ b/deps/rcheevos/test/lua/src/lvm.c @@ -0,0 +1,1322 @@ +/* +** $Id: lvm.c,v 2.268 2016/02/05 19:59:14 roberto Exp $ +** Lua virtual machine +** See Copyright Notice in lua.h +*/ + +#define lvm_c +#define LUA_CORE + +#include "lprefix.h" + +#include +#include +#include +#include +#include +#include + +#include "lua.h" + +#include "ldebug.h" +#include "ldo.h" +#include "lfunc.h" +#include "lgc.h" +#include "lobject.h" +#include "lopcodes.h" +#include "lstate.h" +#include "lstring.h" +#include "ltable.h" +#include "ltm.h" +#include "lvm.h" + + +/* limit for table tag-method chains (to avoid loops) */ +#define MAXTAGLOOP 2000 + + + +/* +** 'l_intfitsf' checks whether a given integer can be converted to a +** float without rounding. Used in comparisons. Left undefined if +** all integers fit in a float precisely. +*/ +#if !defined(l_intfitsf) + +/* number of bits in the mantissa of a float */ +#define NBM (l_mathlim(MANT_DIG)) + +/* +** Check whether some integers may not fit in a float, that is, whether +** (maxinteger >> NBM) > 0 (that implies (1 << NBM) <= maxinteger). +** (The shifts are done in parts to avoid shifting by more than the size +** of an integer. In a worst case, NBM == 113 for long double and +** sizeof(integer) == 32.) +*/ +#if ((((LUA_MAXINTEGER >> (NBM / 4)) >> (NBM / 4)) >> (NBM / 4)) \ + >> (NBM - (3 * (NBM / 4)))) > 0 + +#define l_intfitsf(i) \ + (-((lua_Integer)1 << NBM) <= (i) && (i) <= ((lua_Integer)1 << NBM)) + +#endif + +#endif + + + +/* +** Try to convert a value to a float. The float case is already handled +** by the macro 'tonumber'. +*/ +int luaV_tonumber_ (const TValue *obj, lua_Number *n) { + TValue v; + if (ttisinteger(obj)) { + *n = cast_num(ivalue(obj)); + return 1; + } + else if (cvt2num(obj) && /* string convertible to number? */ + luaO_str2num(svalue(obj), &v) == vslen(obj) + 1) { + *n = nvalue(&v); /* convert result of 'luaO_str2num' to a float */ + return 1; + } + else + return 0; /* conversion failed */ +} + + +/* +** try to convert a value to an integer, rounding according to 'mode': +** mode == 0: accepts only integral values +** mode == 1: takes the floor of the number +** mode == 2: takes the ceil of the number +*/ +int luaV_tointeger (const TValue *obj, lua_Integer *p, int mode) { + TValue v; + again: + if (ttisfloat(obj)) { + lua_Number n = fltvalue(obj); + lua_Number f = l_floor(n); + if (n != f) { /* not an integral value? */ + if (mode == 0) return 0; /* fails if mode demands integral value */ + else if (mode > 1) /* needs ceil? */ + f += 1; /* convert floor to ceil (remember: n != f) */ + } + return lua_numbertointeger(f, p); + } + else if (ttisinteger(obj)) { + *p = ivalue(obj); + return 1; + } + else if (cvt2num(obj) && + luaO_str2num(svalue(obj), &v) == vslen(obj) + 1) { + obj = &v; + goto again; /* convert result from 'luaO_str2num' to an integer */ + } + return 0; /* conversion failed */ +} + + +/* +** Try to convert a 'for' limit to an integer, preserving the +** semantics of the loop. +** (The following explanation assumes a non-negative step; it is valid +** for negative steps mutatis mutandis.) +** If the limit can be converted to an integer, rounding down, that is +** it. +** Otherwise, check whether the limit can be converted to a number. If +** the number is too large, it is OK to set the limit as LUA_MAXINTEGER, +** which means no limit. If the number is too negative, the loop +** should not run, because any initial integer value is larger than the +** limit. So, it sets the limit to LUA_MININTEGER. 'stopnow' corrects +** the extreme case when the initial value is LUA_MININTEGER, in which +** case the LUA_MININTEGER limit would still run the loop once. +*/ +static int forlimit (const TValue *obj, lua_Integer *p, lua_Integer step, + int *stopnow) { + *stopnow = 0; /* usually, let loops run */ + if (!luaV_tointeger(obj, p, (step < 0 ? 2 : 1))) { /* not fit in integer? */ + lua_Number n; /* try to convert to float */ + if (!tonumber(obj, &n)) /* cannot convert to float? */ + return 0; /* not a number */ + if (luai_numlt(0, n)) { /* if true, float is larger than max integer */ + *p = LUA_MAXINTEGER; + if (step < 0) *stopnow = 1; + } + else { /* float is smaller than min integer */ + *p = LUA_MININTEGER; + if (step >= 0) *stopnow = 1; + } + } + return 1; +} + + +/* +** Finish the table access 'val = t[key]'. +** if 'slot' is NULL, 't' is not a table; otherwise, 'slot' points to +** t[k] entry (which must be nil). +*/ +void luaV_finishget (lua_State *L, const TValue *t, TValue *key, StkId val, + const TValue *slot) { + int loop; /* counter to avoid infinite loops */ + const TValue *tm; /* metamethod */ + for (loop = 0; loop < MAXTAGLOOP; loop++) { + if (slot == NULL) { /* 't' is not a table? */ + lua_assert(!ttistable(t)); + tm = luaT_gettmbyobj(L, t, TM_INDEX); + if (ttisnil(tm)) + luaG_typeerror(L, t, "index"); /* no metamethod */ + /* else will try the metamethod */ + } + else { /* 't' is a table */ + lua_assert(ttisnil(slot)); + tm = fasttm(L, hvalue(t)->metatable, TM_INDEX); /* table's metamethod */ + if (tm == NULL) { /* no metamethod? */ + setnilvalue(val); /* result is nil */ + return; + } + /* else will try the metamethod */ + } + if (ttisfunction(tm)) { /* is metamethod a function? */ + luaT_callTM(L, tm, t, key, val, 1); /* call it */ + return; + } + t = tm; /* else try to access 'tm[key]' */ + if (luaV_fastget(L,t,key,slot,luaH_get)) { /* fast track? */ + setobj2s(L, val, slot); /* done */ + return; + } + /* else repeat (tail call 'luaV_finishget') */ + } + luaG_runerror(L, "'__index' chain too long; possible loop"); +} + + +/* +** Finish a table assignment 't[key] = val'. +** If 'slot' is NULL, 't' is not a table. Otherwise, 'slot' points +** to the entry 't[key]', or to 'luaO_nilobject' if there is no such +** entry. (The value at 'slot' must be nil, otherwise 'luaV_fastset' +** would have done the job.) +*/ +void luaV_finishset (lua_State *L, const TValue *t, TValue *key, + StkId val, const TValue *slot) { + int loop; /* counter to avoid infinite loops */ + for (loop = 0; loop < MAXTAGLOOP; loop++) { + const TValue *tm; /* '__newindex' metamethod */ + if (slot != NULL) { /* is 't' a table? */ + Table *h = hvalue(t); /* save 't' table */ + lua_assert(ttisnil(slot)); /* old value must be nil */ + tm = fasttm(L, h->metatable, TM_NEWINDEX); /* get metamethod */ + if (tm == NULL) { /* no metamethod? */ + if (slot == luaO_nilobject) /* no previous entry? */ + slot = luaH_newkey(L, h, key); /* create one */ + /* no metamethod and (now) there is an entry with given key */ + setobj2t(L, cast(TValue *, slot), val); /* set its new value */ + invalidateTMcache(h); + luaC_barrierback(L, h, val); + return; + } + /* else will try the metamethod */ + } + else { /* not a table; check metamethod */ + if (ttisnil(tm = luaT_gettmbyobj(L, t, TM_NEWINDEX))) + luaG_typeerror(L, t, "index"); + } + /* try the metamethod */ + if (ttisfunction(tm)) { + luaT_callTM(L, tm, t, key, val, 0); + return; + } + t = tm; /* else repeat assignment over 'tm' */ + if (luaV_fastset(L, t, key, slot, luaH_get, val)) + return; /* done */ + /* else loop */ + } + luaG_runerror(L, "'__newindex' chain too long; possible loop"); +} + + +/* +** Compare two strings 'ls' x 'rs', returning an integer smaller-equal- +** -larger than zero if 'ls' is smaller-equal-larger than 'rs'. +** The code is a little tricky because it allows '\0' in the strings +** and it uses 'strcoll' (to respect locales) for each segments +** of the strings. +*/ +static int l_strcmp (const TString *ls, const TString *rs) { + const char *l = getstr(ls); + size_t ll = tsslen(ls); + const char *r = getstr(rs); + size_t lr = tsslen(rs); + for (;;) { /* for each segment */ + int temp = strcoll(l, r); + if (temp != 0) /* not equal? */ + return temp; /* done */ + else { /* strings are equal up to a '\0' */ + size_t len = strlen(l); /* index of first '\0' in both strings */ + if (len == lr) /* 'rs' is finished? */ + return (len == ll) ? 0 : 1; /* check 'ls' */ + else if (len == ll) /* 'ls' is finished? */ + return -1; /* 'ls' is smaller than 'rs' ('rs' is not finished) */ + /* both strings longer than 'len'; go on comparing after the '\0' */ + len++; + l += len; ll -= len; r += len; lr -= len; + } + } +} + + +/* +** Check whether integer 'i' is less than float 'f'. If 'i' has an +** exact representation as a float ('l_intfitsf'), compare numbers as +** floats. Otherwise, if 'f' is outside the range for integers, result +** is trivial. Otherwise, compare them as integers. (When 'i' has no +** float representation, either 'f' is "far away" from 'i' or 'f' has +** no precision left for a fractional part; either way, how 'f' is +** truncated is irrelevant.) When 'f' is NaN, comparisons must result +** in false. +*/ +static int LTintfloat (lua_Integer i, lua_Number f) { +#if defined(l_intfitsf) + if (!l_intfitsf(i)) { + if (f >= -cast_num(LUA_MININTEGER)) /* -minint == maxint + 1 */ + return 1; /* f >= maxint + 1 > i */ + else if (f > cast_num(LUA_MININTEGER)) /* minint < f <= maxint ? */ + return (i < cast(lua_Integer, f)); /* compare them as integers */ + else /* f <= minint <= i (or 'f' is NaN) --> not(i < f) */ + return 0; + } +#endif + return luai_numlt(cast_num(i), f); /* compare them as floats */ +} + + +/* +** Check whether integer 'i' is less than or equal to float 'f'. +** See comments on previous function. +*/ +static int LEintfloat (lua_Integer i, lua_Number f) { +#if defined(l_intfitsf) + if (!l_intfitsf(i)) { + if (f >= -cast_num(LUA_MININTEGER)) /* -minint == maxint + 1 */ + return 1; /* f >= maxint + 1 > i */ + else if (f >= cast_num(LUA_MININTEGER)) /* minint <= f <= maxint ? */ + return (i <= cast(lua_Integer, f)); /* compare them as integers */ + else /* f < minint <= i (or 'f' is NaN) --> not(i <= f) */ + return 0; + } +#endif + return luai_numle(cast_num(i), f); /* compare them as floats */ +} + + +/* +** Return 'l < r', for numbers. +*/ +static int LTnum (const TValue *l, const TValue *r) { + if (ttisinteger(l)) { + lua_Integer li = ivalue(l); + if (ttisinteger(r)) + return li < ivalue(r); /* both are integers */ + else /* 'l' is int and 'r' is float */ + return LTintfloat(li, fltvalue(r)); /* l < r ? */ + } + else { + lua_Number lf = fltvalue(l); /* 'l' must be float */ + if (ttisfloat(r)) + return luai_numlt(lf, fltvalue(r)); /* both are float */ + else if (luai_numisnan(lf)) /* 'r' is int and 'l' is float */ + return 0; /* NaN < i is always false */ + else /* without NaN, (l < r) <--> not(r <= l) */ + return !LEintfloat(ivalue(r), lf); /* not (r <= l) ? */ + } +} + + +/* +** Return 'l <= r', for numbers. +*/ +static int LEnum (const TValue *l, const TValue *r) { + if (ttisinteger(l)) { + lua_Integer li = ivalue(l); + if (ttisinteger(r)) + return li <= ivalue(r); /* both are integers */ + else /* 'l' is int and 'r' is float */ + return LEintfloat(li, fltvalue(r)); /* l <= r ? */ + } + else { + lua_Number lf = fltvalue(l); /* 'l' must be float */ + if (ttisfloat(r)) + return luai_numle(lf, fltvalue(r)); /* both are float */ + else if (luai_numisnan(lf)) /* 'r' is int and 'l' is float */ + return 0; /* NaN <= i is always false */ + else /* without NaN, (l <= r) <--> not(r < l) */ + return !LTintfloat(ivalue(r), lf); /* not (r < l) ? */ + } +} + + +/* +** Main operation less than; return 'l < r'. +*/ +int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r) { + int res; + if (ttisnumber(l) && ttisnumber(r)) /* both operands are numbers? */ + return LTnum(l, r); + else if (ttisstring(l) && ttisstring(r)) /* both are strings? */ + return l_strcmp(tsvalue(l), tsvalue(r)) < 0; + else if ((res = luaT_callorderTM(L, l, r, TM_LT)) < 0) /* no metamethod? */ + luaG_ordererror(L, l, r); /* error */ + return res; +} + + +/* +** Main operation less than or equal to; return 'l <= r'. If it needs +** a metamethod and there is no '__le', try '__lt', based on +** l <= r iff !(r < l) (assuming a total order). If the metamethod +** yields during this substitution, the continuation has to know +** about it (to negate the result of r= 0) /* try 'le' */ + return res; + else { /* try 'lt': */ + L->ci->callstatus |= CIST_LEQ; /* mark it is doing 'lt' for 'le' */ + res = luaT_callorderTM(L, r, l, TM_LT); + L->ci->callstatus ^= CIST_LEQ; /* clear mark */ + if (res < 0) + luaG_ordererror(L, l, r); + return !res; /* result is negated */ + } +} + + +/* +** Main operation for equality of Lua values; return 't1 == t2'. +** L == NULL means raw equality (no metamethods) +*/ +int luaV_equalobj (lua_State *L, const TValue *t1, const TValue *t2) { + const TValue *tm; + if (ttype(t1) != ttype(t2)) { /* not the same variant? */ + if (ttnov(t1) != ttnov(t2) || ttnov(t1) != LUA_TNUMBER) + return 0; /* only numbers can be equal with different variants */ + else { /* two numbers with different variants */ + lua_Integer i1, i2; /* compare them as integers */ + return (tointeger(t1, &i1) && tointeger(t2, &i2) && i1 == i2); + } + } + /* values have same type and same variant */ + switch (ttype(t1)) { + case LUA_TNIL: return 1; + case LUA_TNUMINT: return (ivalue(t1) == ivalue(t2)); + case LUA_TNUMFLT: return luai_numeq(fltvalue(t1), fltvalue(t2)); + case LUA_TBOOLEAN: return bvalue(t1) == bvalue(t2); /* true must be 1 !! */ + case LUA_TLIGHTUSERDATA: return pvalue(t1) == pvalue(t2); + case LUA_TLCF: return fvalue(t1) == fvalue(t2); + case LUA_TSHRSTR: return eqshrstr(tsvalue(t1), tsvalue(t2)); + case LUA_TLNGSTR: return luaS_eqlngstr(tsvalue(t1), tsvalue(t2)); + case LUA_TUSERDATA: { + if (uvalue(t1) == uvalue(t2)) return 1; + else if (L == NULL) return 0; + tm = fasttm(L, uvalue(t1)->metatable, TM_EQ); + if (tm == NULL) + tm = fasttm(L, uvalue(t2)->metatable, TM_EQ); + break; /* will try TM */ + } + case LUA_TTABLE: { + if (hvalue(t1) == hvalue(t2)) return 1; + else if (L == NULL) return 0; + tm = fasttm(L, hvalue(t1)->metatable, TM_EQ); + if (tm == NULL) + tm = fasttm(L, hvalue(t2)->metatable, TM_EQ); + break; /* will try TM */ + } + default: + return gcvalue(t1) == gcvalue(t2); + } + if (tm == NULL) /* no TM? */ + return 0; /* objects are different */ + luaT_callTM(L, tm, t1, t2, L->top, 1); /* call TM */ + return !l_isfalse(L->top); +} + + +/* macro used by 'luaV_concat' to ensure that element at 'o' is a string */ +#define tostring(L,o) \ + (ttisstring(o) || (cvt2str(o) && (luaO_tostring(L, o), 1))) + +#define isemptystr(o) (ttisshrstring(o) && tsvalue(o)->shrlen == 0) + +/* copy strings in stack from top - n up to top - 1 to buffer */ +static void copy2buff (StkId top, int n, char *buff) { + size_t tl = 0; /* size already copied */ + do { + size_t l = vslen(top - n); /* length of string being copied */ + memcpy(buff + tl, svalue(top - n), l * sizeof(char)); + tl += l; + } while (--n > 0); +} + + +/* +** Main operation for concatenation: concat 'total' values in the stack, +** from 'L->top - total' up to 'L->top - 1'. +*/ +void luaV_concat (lua_State *L, int total) { + lua_assert(total >= 2); + do { + StkId top = L->top; + int n = 2; /* number of elements handled in this pass (at least 2) */ + if (!(ttisstring(top-2) || cvt2str(top-2)) || !tostring(L, top-1)) + luaT_trybinTM(L, top-2, top-1, top-2, TM_CONCAT); + else if (isemptystr(top - 1)) /* second operand is empty? */ + cast_void(tostring(L, top - 2)); /* result is first operand */ + else if (isemptystr(top - 2)) { /* first operand is an empty string? */ + setobjs2s(L, top - 2, top - 1); /* result is second op. */ + } + else { + /* at least two non-empty string values; get as many as possible */ + size_t tl = vslen(top - 1); + TString *ts; + /* collect total length and number of strings */ + for (n = 1; n < total && tostring(L, top - n - 1); n++) { + size_t l = vslen(top - n - 1); + if (l >= (MAX_SIZE/sizeof(char)) - tl) + luaG_runerror(L, "string length overflow"); + tl += l; + } + if (tl <= LUAI_MAXSHORTLEN) { /* is result a short string? */ + char buff[LUAI_MAXSHORTLEN]; + copy2buff(top, n, buff); /* copy strings to buffer */ + ts = luaS_newlstr(L, buff, tl); + } + else { /* long string; copy strings directly to final result */ + ts = luaS_createlngstrobj(L, tl); + copy2buff(top, n, getstr(ts)); + } + setsvalue2s(L, top - n, ts); /* create result */ + } + total -= n-1; /* got 'n' strings to create 1 new */ + L->top -= n-1; /* popped 'n' strings and pushed one */ + } while (total > 1); /* repeat until only 1 result left */ +} + + +/* +** Main operation 'ra' = #rb'. +*/ +void luaV_objlen (lua_State *L, StkId ra, const TValue *rb) { + const TValue *tm; + switch (ttype(rb)) { + case LUA_TTABLE: { + Table *h = hvalue(rb); + tm = fasttm(L, h->metatable, TM_LEN); + if (tm) break; /* metamethod? break switch to call it */ + setivalue(ra, luaH_getn(h)); /* else primitive len */ + return; + } + case LUA_TSHRSTR: { + setivalue(ra, tsvalue(rb)->shrlen); + return; + } + case LUA_TLNGSTR: { + setivalue(ra, tsvalue(rb)->u.lnglen); + return; + } + default: { /* try metamethod */ + tm = luaT_gettmbyobj(L, rb, TM_LEN); + if (ttisnil(tm)) /* no metamethod? */ + luaG_typeerror(L, rb, "get length of"); + break; + } + } + luaT_callTM(L, tm, rb, rb, ra, 1); +} + + +/* +** Integer division; return 'm // n', that is, floor(m/n). +** C division truncates its result (rounds towards zero). +** 'floor(q) == trunc(q)' when 'q >= 0' or when 'q' is integer, +** otherwise 'floor(q) == trunc(q) - 1'. +*/ +lua_Integer luaV_div (lua_State *L, lua_Integer m, lua_Integer n) { + if (l_castS2U(n) + 1u <= 1u) { /* special cases: -1 or 0 */ + if (n == 0) + luaG_runerror(L, "attempt to divide by zero"); + return intop(-, 0, m); /* n==-1; avoid overflow with 0x80000...//-1 */ + } + else { + lua_Integer q = m / n; /* perform C division */ + if ((m ^ n) < 0 && m % n != 0) /* 'm/n' would be negative non-integer? */ + q -= 1; /* correct result for different rounding */ + return q; + } +} + + +/* +** Integer modulus; return 'm % n'. (Assume that C '%' with +** negative operands follows C99 behavior. See previous comment +** about luaV_div.) +*/ +lua_Integer luaV_mod (lua_State *L, lua_Integer m, lua_Integer n) { + if (l_castS2U(n) + 1u <= 1u) { /* special cases: -1 or 0 */ + if (n == 0) + luaG_runerror(L, "attempt to perform 'n%%0'"); + return 0; /* m % -1 == 0; avoid overflow with 0x80000...%-1 */ + } + else { + lua_Integer r = m % n; + if (r != 0 && (m ^ n) < 0) /* 'm/n' would be non-integer negative? */ + r += n; /* correct result for different rounding */ + return r; + } +} + + +/* number of bits in an integer */ +#define NBITS cast_int(sizeof(lua_Integer) * CHAR_BIT) + +/* +** Shift left operation. (Shift right just negates 'y'.) +*/ +lua_Integer luaV_shiftl (lua_Integer x, lua_Integer y) { + if (y < 0) { /* shift right? */ + if (y <= -NBITS) return 0; + else return intop(>>, x, -y); + } + else { /* shift left */ + if (y >= NBITS) return 0; + else return intop(<<, x, y); + } +} + + +/* +** check whether cached closure in prototype 'p' may be reused, that is, +** whether there is a cached closure with the same upvalues needed by +** new closure to be created. +*/ +static LClosure *getcached (Proto *p, UpVal **encup, StkId base) { + LClosure *c = p->cache; + if (c != NULL) { /* is there a cached closure? */ + int nup = p->sizeupvalues; + Upvaldesc *uv = p->upvalues; + int i; + for (i = 0; i < nup; i++) { /* check whether it has right upvalues */ + TValue *v = uv[i].instack ? base + uv[i].idx : encup[uv[i].idx]->v; + if (c->upvals[i]->v != v) + return NULL; /* wrong upvalue; cannot reuse closure */ + } + } + return c; /* return cached closure (or NULL if no cached closure) */ +} + + +/* +** create a new Lua closure, push it in the stack, and initialize +** its upvalues. Note that the closure is not cached if prototype is +** already black (which means that 'cache' was already cleared by the +** GC). +*/ +static void pushclosure (lua_State *L, Proto *p, UpVal **encup, StkId base, + StkId ra) { + int nup = p->sizeupvalues; + Upvaldesc *uv = p->upvalues; + int i; + LClosure *ncl = luaF_newLclosure(L, nup); + ncl->p = p; + setclLvalue(L, ra, ncl); /* anchor new closure in stack */ + for (i = 0; i < nup; i++) { /* fill in its upvalues */ + if (uv[i].instack) /* upvalue refers to local variable? */ + ncl->upvals[i] = luaF_findupval(L, base + uv[i].idx); + else /* get upvalue from enclosing function */ + ncl->upvals[i] = encup[uv[i].idx]; + ncl->upvals[i]->refcount++; + /* new closure is white, so we do not need a barrier here */ + } + if (!isblack(p)) /* cache will not break GC invariant? */ + p->cache = ncl; /* save it on cache for reuse */ +} + + +/* +** finish execution of an opcode interrupted by an yield +*/ +void luaV_finishOp (lua_State *L) { + CallInfo *ci = L->ci; + StkId base = ci->u.l.base; + Instruction inst = *(ci->u.l.savedpc - 1); /* interrupted instruction */ + OpCode op = GET_OPCODE(inst); + switch (op) { /* finish its execution */ + case OP_ADD: case OP_SUB: case OP_MUL: case OP_DIV: case OP_IDIV: + case OP_BAND: case OP_BOR: case OP_BXOR: case OP_SHL: case OP_SHR: + case OP_MOD: case OP_POW: + case OP_UNM: case OP_BNOT: case OP_LEN: + case OP_GETTABUP: case OP_GETTABLE: case OP_SELF: { + setobjs2s(L, base + GETARG_A(inst), --L->top); + break; + } + case OP_LE: case OP_LT: case OP_EQ: { + int res = !l_isfalse(L->top - 1); + L->top--; + if (ci->callstatus & CIST_LEQ) { /* "<=" using "<" instead? */ + lua_assert(op == OP_LE); + ci->callstatus ^= CIST_LEQ; /* clear mark */ + res = !res; /* negate result */ + } + lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_JMP); + if (res != GETARG_A(inst)) /* condition failed? */ + ci->u.l.savedpc++; /* skip jump instruction */ + break; + } + case OP_CONCAT: { + StkId top = L->top - 1; /* top when 'luaT_trybinTM' was called */ + int b = GETARG_B(inst); /* first element to concatenate */ + int total = cast_int(top - 1 - (base + b)); /* yet to concatenate */ + setobj2s(L, top - 2, top); /* put TM result in proper position */ + if (total > 1) { /* are there elements to concat? */ + L->top = top - 1; /* top is one after last element (at top-2) */ + luaV_concat(L, total); /* concat them (may yield again) */ + } + /* move final result to final position */ + setobj2s(L, ci->u.l.base + GETARG_A(inst), L->top - 1); + L->top = ci->top; /* restore top */ + break; + } + case OP_TFORCALL: { + lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_TFORLOOP); + L->top = ci->top; /* correct top */ + break; + } + case OP_CALL: { + if (GETARG_C(inst) - 1 >= 0) /* nresults >= 0? */ + L->top = ci->top; /* adjust results */ + break; + } + case OP_TAILCALL: case OP_SETTABUP: case OP_SETTABLE: + break; + default: lua_assert(0); + } +} + + + + +/* +** {================================================================== +** Function 'luaV_execute': main interpreter loop +** =================================================================== +*/ + + +/* +** some macros for common tasks in 'luaV_execute' +*/ + + +#define RA(i) (base+GETARG_A(i)) +#define RB(i) check_exp(getBMode(GET_OPCODE(i)) == OpArgR, base+GETARG_B(i)) +#define RC(i) check_exp(getCMode(GET_OPCODE(i)) == OpArgR, base+GETARG_C(i)) +#define RKB(i) check_exp(getBMode(GET_OPCODE(i)) == OpArgK, \ + ISK(GETARG_B(i)) ? k+INDEXK(GETARG_B(i)) : base+GETARG_B(i)) +#define RKC(i) check_exp(getCMode(GET_OPCODE(i)) == OpArgK, \ + ISK(GETARG_C(i)) ? k+INDEXK(GETARG_C(i)) : base+GETARG_C(i)) + + +/* execute a jump instruction */ +#define dojump(ci,i,e) \ + { int a = GETARG_A(i); \ + if (a != 0) luaF_close(L, ci->u.l.base + a - 1); \ + ci->u.l.savedpc += GETARG_sBx(i) + e; } + +/* for test instructions, execute the jump instruction that follows it */ +#define donextjump(ci) { i = *ci->u.l.savedpc; dojump(ci, i, 1); } + + +#define Protect(x) { {x;}; base = ci->u.l.base; } + +#define checkGC(L,c) \ + { luaC_condGC(L, L->top = (c), /* limit of live values */ \ + Protect(L->top = ci->top)); /* restore top */ \ + luai_threadyield(L); } + + +/* fetch an instruction and prepare its execution */ +#define vmfetch() { \ + i = *(ci->u.l.savedpc++); \ + if (L->hookmask & (LUA_MASKLINE | LUA_MASKCOUNT)) \ + Protect(luaG_traceexec(L)); \ + ra = RA(i); /* WARNING: any stack reallocation invalidates 'ra' */ \ + lua_assert(base == ci->u.l.base); \ + lua_assert(base <= L->top && L->top < L->stack + L->stacksize); \ +} + +#define vmdispatch(o) switch(o) +#define vmcase(l) case l: +#define vmbreak break + + +/* +** copy of 'luaV_gettable', but protecting the call to potential +** metamethod (which can reallocate the stack) +*/ +#define gettableProtected(L,t,k,v) { const TValue *slot; \ + if (luaV_fastget(L,t,k,slot,luaH_get)) { setobj2s(L, v, slot); } \ + else Protect(luaV_finishget(L,t,k,v,slot)); } + + +/* same for 'luaV_settable' */ +#define settableProtected(L,t,k,v) { const TValue *slot; \ + if (!luaV_fastset(L,t,k,slot,luaH_get,v)) \ + Protect(luaV_finishset(L,t,k,v,slot)); } + + + +void luaV_execute (lua_State *L) { + CallInfo *ci = L->ci; + LClosure *cl; + TValue *k; + StkId base; + ci->callstatus |= CIST_FRESH; /* fresh invocation of 'luaV_execute" */ + newframe: /* reentry point when frame changes (call/return) */ + lua_assert(ci == L->ci); + cl = clLvalue(ci->func); /* local reference to function's closure */ + k = cl->p->k; /* local reference to function's constant table */ + base = ci->u.l.base; /* local copy of function's base */ + /* main loop of interpreter */ + for (;;) { + Instruction i; + StkId ra; + vmfetch(); + vmdispatch (GET_OPCODE(i)) { + vmcase(OP_MOVE) { + setobjs2s(L, ra, RB(i)); + vmbreak; + } + vmcase(OP_LOADK) { + TValue *rb = k + GETARG_Bx(i); + setobj2s(L, ra, rb); + vmbreak; + } + vmcase(OP_LOADKX) { + TValue *rb; + lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_EXTRAARG); + rb = k + GETARG_Ax(*ci->u.l.savedpc++); + setobj2s(L, ra, rb); + vmbreak; + } + vmcase(OP_LOADBOOL) { + setbvalue(ra, GETARG_B(i)); + if (GETARG_C(i)) ci->u.l.savedpc++; /* skip next instruction (if C) */ + vmbreak; + } + vmcase(OP_LOADNIL) { + int b = GETARG_B(i); + do { + setnilvalue(ra++); + } while (b--); + vmbreak; + } + vmcase(OP_GETUPVAL) { + int b = GETARG_B(i); + setobj2s(L, ra, cl->upvals[b]->v); + vmbreak; + } + vmcase(OP_GETTABUP) { + TValue *upval = cl->upvals[GETARG_B(i)]->v; + TValue *rc = RKC(i); + gettableProtected(L, upval, rc, ra); + vmbreak; + } + vmcase(OP_GETTABLE) { + StkId rb = RB(i); + TValue *rc = RKC(i); + gettableProtected(L, rb, rc, ra); + vmbreak; + } + vmcase(OP_SETTABUP) { + TValue *upval = cl->upvals[GETARG_A(i)]->v; + TValue *rb = RKB(i); + TValue *rc = RKC(i); + settableProtected(L, upval, rb, rc); + vmbreak; + } + vmcase(OP_SETUPVAL) { + UpVal *uv = cl->upvals[GETARG_B(i)]; + setobj(L, uv->v, ra); + luaC_upvalbarrier(L, uv); + vmbreak; + } + vmcase(OP_SETTABLE) { + TValue *rb = RKB(i); + TValue *rc = RKC(i); + settableProtected(L, ra, rb, rc); + vmbreak; + } + vmcase(OP_NEWTABLE) { + int b = GETARG_B(i); + int c = GETARG_C(i); + Table *t = luaH_new(L); + sethvalue(L, ra, t); + if (b != 0 || c != 0) + luaH_resize(L, t, luaO_fb2int(b), luaO_fb2int(c)); + checkGC(L, ra + 1); + vmbreak; + } + vmcase(OP_SELF) { + const TValue *aux; + StkId rb = RB(i); + TValue *rc = RKC(i); + TString *key = tsvalue(rc); /* key must be a string */ + setobjs2s(L, ra + 1, rb); + if (luaV_fastget(L, rb, key, aux, luaH_getstr)) { + setobj2s(L, ra, aux); + } + else Protect(luaV_finishget(L, rb, rc, ra, aux)); + vmbreak; + } + vmcase(OP_ADD) { + TValue *rb = RKB(i); + TValue *rc = RKC(i); + lua_Number nb; lua_Number nc; + if (ttisinteger(rb) && ttisinteger(rc)) { + lua_Integer ib = ivalue(rb); lua_Integer ic = ivalue(rc); + setivalue(ra, intop(+, ib, ic)); + } + else if (tonumber(rb, &nb) && tonumber(rc, &nc)) { + setfltvalue(ra, luai_numadd(L, nb, nc)); + } + else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_ADD)); } + vmbreak; + } + vmcase(OP_SUB) { + TValue *rb = RKB(i); + TValue *rc = RKC(i); + lua_Number nb; lua_Number nc; + if (ttisinteger(rb) && ttisinteger(rc)) { + lua_Integer ib = ivalue(rb); lua_Integer ic = ivalue(rc); + setivalue(ra, intop(-, ib, ic)); + } + else if (tonumber(rb, &nb) && tonumber(rc, &nc)) { + setfltvalue(ra, luai_numsub(L, nb, nc)); + } + else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_SUB)); } + vmbreak; + } + vmcase(OP_MUL) { + TValue *rb = RKB(i); + TValue *rc = RKC(i); + lua_Number nb; lua_Number nc; + if (ttisinteger(rb) && ttisinteger(rc)) { + lua_Integer ib = ivalue(rb); lua_Integer ic = ivalue(rc); + setivalue(ra, intop(*, ib, ic)); + } + else if (tonumber(rb, &nb) && tonumber(rc, &nc)) { + setfltvalue(ra, luai_nummul(L, nb, nc)); + } + else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_MUL)); } + vmbreak; + } + vmcase(OP_DIV) { /* float division (always with floats) */ + TValue *rb = RKB(i); + TValue *rc = RKC(i); + lua_Number nb; lua_Number nc; + if (tonumber(rb, &nb) && tonumber(rc, &nc)) { + setfltvalue(ra, luai_numdiv(L, nb, nc)); + } + else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_DIV)); } + vmbreak; + } + vmcase(OP_BAND) { + TValue *rb = RKB(i); + TValue *rc = RKC(i); + lua_Integer ib; lua_Integer ic; + if (tointeger(rb, &ib) && tointeger(rc, &ic)) { + setivalue(ra, intop(&, ib, ic)); + } + else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_BAND)); } + vmbreak; + } + vmcase(OP_BOR) { + TValue *rb = RKB(i); + TValue *rc = RKC(i); + lua_Integer ib; lua_Integer ic; + if (tointeger(rb, &ib) && tointeger(rc, &ic)) { + setivalue(ra, intop(|, ib, ic)); + } + else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_BOR)); } + vmbreak; + } + vmcase(OP_BXOR) { + TValue *rb = RKB(i); + TValue *rc = RKC(i); + lua_Integer ib; lua_Integer ic; + if (tointeger(rb, &ib) && tointeger(rc, &ic)) { + setivalue(ra, intop(^, ib, ic)); + } + else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_BXOR)); } + vmbreak; + } + vmcase(OP_SHL) { + TValue *rb = RKB(i); + TValue *rc = RKC(i); + lua_Integer ib; lua_Integer ic; + if (tointeger(rb, &ib) && tointeger(rc, &ic)) { + setivalue(ra, luaV_shiftl(ib, ic)); + } + else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_SHL)); } + vmbreak; + } + vmcase(OP_SHR) { + TValue *rb = RKB(i); + TValue *rc = RKC(i); + lua_Integer ib; lua_Integer ic; + if (tointeger(rb, &ib) && tointeger(rc, &ic)) { + setivalue(ra, luaV_shiftl(ib, -ic)); + } + else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_SHR)); } + vmbreak; + } + vmcase(OP_MOD) { + TValue *rb = RKB(i); + TValue *rc = RKC(i); + lua_Number nb; lua_Number nc; + if (ttisinteger(rb) && ttisinteger(rc)) { + lua_Integer ib = ivalue(rb); lua_Integer ic = ivalue(rc); + setivalue(ra, luaV_mod(L, ib, ic)); + } + else if (tonumber(rb, &nb) && tonumber(rc, &nc)) { + lua_Number m; + luai_nummod(L, nb, nc, m); + setfltvalue(ra, m); + } + else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_MOD)); } + vmbreak; + } + vmcase(OP_IDIV) { /* floor division */ + TValue *rb = RKB(i); + TValue *rc = RKC(i); + lua_Number nb; lua_Number nc; + if (ttisinteger(rb) && ttisinteger(rc)) { + lua_Integer ib = ivalue(rb); lua_Integer ic = ivalue(rc); + setivalue(ra, luaV_div(L, ib, ic)); + } + else if (tonumber(rb, &nb) && tonumber(rc, &nc)) { + setfltvalue(ra, luai_numidiv(L, nb, nc)); + } + else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_IDIV)); } + vmbreak; + } + vmcase(OP_POW) { + TValue *rb = RKB(i); + TValue *rc = RKC(i); + lua_Number nb; lua_Number nc; + if (tonumber(rb, &nb) && tonumber(rc, &nc)) { + setfltvalue(ra, luai_numpow(L, nb, nc)); + } + else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_POW)); } + vmbreak; + } + vmcase(OP_UNM) { + TValue *rb = RB(i); + lua_Number nb; + if (ttisinteger(rb)) { + lua_Integer ib = ivalue(rb); + setivalue(ra, intop(-, 0, ib)); + } + else if (tonumber(rb, &nb)) { + setfltvalue(ra, luai_numunm(L, nb)); + } + else { + Protect(luaT_trybinTM(L, rb, rb, ra, TM_UNM)); + } + vmbreak; + } + vmcase(OP_BNOT) { + TValue *rb = RB(i); + lua_Integer ib; + if (tointeger(rb, &ib)) { + setivalue(ra, intop(^, ~l_castS2U(0), ib)); + } + else { + Protect(luaT_trybinTM(L, rb, rb, ra, TM_BNOT)); + } + vmbreak; + } + vmcase(OP_NOT) { + TValue *rb = RB(i); + int res = l_isfalse(rb); /* next assignment may change this value */ + setbvalue(ra, res); + vmbreak; + } + vmcase(OP_LEN) { + Protect(luaV_objlen(L, ra, RB(i))); + vmbreak; + } + vmcase(OP_CONCAT) { + int b = GETARG_B(i); + int c = GETARG_C(i); + StkId rb; + L->top = base + c + 1; /* mark the end of concat operands */ + Protect(luaV_concat(L, c - b + 1)); + ra = RA(i); /* 'luaV_concat' may invoke TMs and move the stack */ + rb = base + b; + setobjs2s(L, ra, rb); + checkGC(L, (ra >= rb ? ra + 1 : rb)); + L->top = ci->top; /* restore top */ + vmbreak; + } + vmcase(OP_JMP) { + dojump(ci, i, 0); + vmbreak; + } + vmcase(OP_EQ) { + TValue *rb = RKB(i); + TValue *rc = RKC(i); + Protect( + if (luaV_equalobj(L, rb, rc) != GETARG_A(i)) + ci->u.l.savedpc++; + else + donextjump(ci); + ) + vmbreak; + } + vmcase(OP_LT) { + Protect( + if (luaV_lessthan(L, RKB(i), RKC(i)) != GETARG_A(i)) + ci->u.l.savedpc++; + else + donextjump(ci); + ) + vmbreak; + } + vmcase(OP_LE) { + Protect( + if (luaV_lessequal(L, RKB(i), RKC(i)) != GETARG_A(i)) + ci->u.l.savedpc++; + else + donextjump(ci); + ) + vmbreak; + } + vmcase(OP_TEST) { + if (GETARG_C(i) ? l_isfalse(ra) : !l_isfalse(ra)) + ci->u.l.savedpc++; + else + donextjump(ci); + vmbreak; + } + vmcase(OP_TESTSET) { + TValue *rb = RB(i); + if (GETARG_C(i) ? l_isfalse(rb) : !l_isfalse(rb)) + ci->u.l.savedpc++; + else { + setobjs2s(L, ra, rb); + donextjump(ci); + } + vmbreak; + } + vmcase(OP_CALL) { + int b = GETARG_B(i); + int nresults = GETARG_C(i) - 1; + if (b != 0) L->top = ra+b; /* else previous instruction set top */ + if (luaD_precall(L, ra, nresults)) { /* C function? */ + if (nresults >= 0) + L->top = ci->top; /* adjust results */ + Protect((void)0); /* update 'base' */ + } + else { /* Lua function */ + ci = L->ci; + goto newframe; /* restart luaV_execute over new Lua function */ + } + vmbreak; + } + vmcase(OP_TAILCALL) { + int b = GETARG_B(i); + if (b != 0) L->top = ra+b; /* else previous instruction set top */ + lua_assert(GETARG_C(i) - 1 == LUA_MULTRET); + if (luaD_precall(L, ra, LUA_MULTRET)) { /* C function? */ + Protect((void)0); /* update 'base' */ + } + else { + /* tail call: put called frame (n) in place of caller one (o) */ + CallInfo *nci = L->ci; /* called frame */ + CallInfo *oci = nci->previous; /* caller frame */ + StkId nfunc = nci->func; /* called function */ + StkId ofunc = oci->func; /* caller function */ + /* last stack slot filled by 'precall' */ + StkId lim = nci->u.l.base + getproto(nfunc)->numparams; + int aux; + /* close all upvalues from previous call */ + if (cl->p->sizep > 0) luaF_close(L, oci->u.l.base); + /* move new frame into old one */ + for (aux = 0; nfunc + aux < lim; aux++) + setobjs2s(L, ofunc + aux, nfunc + aux); + oci->u.l.base = ofunc + (nci->u.l.base - nfunc); /* correct base */ + oci->top = L->top = ofunc + (L->top - nfunc); /* correct top */ + oci->u.l.savedpc = nci->u.l.savedpc; + oci->callstatus |= CIST_TAIL; /* function was tail called */ + ci = L->ci = oci; /* remove new frame */ + lua_assert(L->top == oci->u.l.base + getproto(ofunc)->maxstacksize); + goto newframe; /* restart luaV_execute over new Lua function */ + } + vmbreak; + } + vmcase(OP_RETURN) { + int b = GETARG_B(i); + if (cl->p->sizep > 0) luaF_close(L, base); + b = luaD_poscall(L, ci, ra, (b != 0 ? b - 1 : cast_int(L->top - ra))); + if (ci->callstatus & CIST_FRESH) /* local 'ci' still from callee */ + return; /* external invocation: return */ + else { /* invocation via reentry: continue execution */ + ci = L->ci; + if (b) L->top = ci->top; + lua_assert(isLua(ci)); + lua_assert(GET_OPCODE(*((ci)->u.l.savedpc - 1)) == OP_CALL); + goto newframe; /* restart luaV_execute over new Lua function */ + } + } + vmcase(OP_FORLOOP) { + if (ttisinteger(ra)) { /* integer loop? */ + lua_Integer step = ivalue(ra + 2); + lua_Integer idx = intop(+, ivalue(ra), step); /* increment index */ + lua_Integer limit = ivalue(ra + 1); + if ((0 < step) ? (idx <= limit) : (limit <= idx)) { + ci->u.l.savedpc += GETARG_sBx(i); /* jump back */ + chgivalue(ra, idx); /* update internal index... */ + setivalue(ra + 3, idx); /* ...and external index */ + } + } + else { /* floating loop */ + lua_Number step = fltvalue(ra + 2); + lua_Number idx = luai_numadd(L, fltvalue(ra), step); /* inc. index */ + lua_Number limit = fltvalue(ra + 1); + if (luai_numlt(0, step) ? luai_numle(idx, limit) + : luai_numle(limit, idx)) { + ci->u.l.savedpc += GETARG_sBx(i); /* jump back */ + chgfltvalue(ra, idx); /* update internal index... */ + setfltvalue(ra + 3, idx); /* ...and external index */ + } + } + vmbreak; + } + vmcase(OP_FORPREP) { + TValue *init = ra; + TValue *plimit = ra + 1; + TValue *pstep = ra + 2; + lua_Integer ilimit; + int stopnow; + if (ttisinteger(init) && ttisinteger(pstep) && + forlimit(plimit, &ilimit, ivalue(pstep), &stopnow)) { + /* all values are integer */ + lua_Integer initv = (stopnow ? 0 : ivalue(init)); + setivalue(plimit, ilimit); + setivalue(init, intop(-, initv, ivalue(pstep))); + } + else { /* try making all values floats */ + lua_Number ninit; lua_Number nlimit; lua_Number nstep; + if (!tonumber(plimit, &nlimit)) + luaG_runerror(L, "'for' limit must be a number"); + setfltvalue(plimit, nlimit); + if (!tonumber(pstep, &nstep)) + luaG_runerror(L, "'for' step must be a number"); + setfltvalue(pstep, nstep); + if (!tonumber(init, &ninit)) + luaG_runerror(L, "'for' initial value must be a number"); + setfltvalue(init, luai_numsub(L, ninit, nstep)); + } + ci->u.l.savedpc += GETARG_sBx(i); + vmbreak; + } + vmcase(OP_TFORCALL) { + StkId cb = ra + 3; /* call base */ + setobjs2s(L, cb+2, ra+2); + setobjs2s(L, cb+1, ra+1); + setobjs2s(L, cb, ra); + L->top = cb + 3; /* func. + 2 args (state and index) */ + Protect(luaD_call(L, cb, GETARG_C(i))); + L->top = ci->top; + i = *(ci->u.l.savedpc++); /* go to next instruction */ + ra = RA(i); + lua_assert(GET_OPCODE(i) == OP_TFORLOOP); + goto l_tforloop; + } + vmcase(OP_TFORLOOP) { + l_tforloop: + if (!ttisnil(ra + 1)) { /* continue loop? */ + setobjs2s(L, ra, ra + 1); /* save control variable */ + ci->u.l.savedpc += GETARG_sBx(i); /* jump back */ + } + vmbreak; + } + vmcase(OP_SETLIST) { + int n = GETARG_B(i); + int c = GETARG_C(i); + unsigned int last; + Table *h; + if (n == 0) n = cast_int(L->top - ra) - 1; + if (c == 0) { + lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_EXTRAARG); + c = GETARG_Ax(*ci->u.l.savedpc++); + } + h = hvalue(ra); + last = ((c-1)*LFIELDS_PER_FLUSH) + n; + if (last > h->sizearray) /* needs more space? */ + luaH_resizearray(L, h, last); /* preallocate it at once */ + for (; n > 0; n--) { + TValue *val = ra+n; + luaH_setint(L, h, last--, val); + luaC_barrierback(L, h, val); + } + L->top = ci->top; /* correct top (in case of previous open call) */ + vmbreak; + } + vmcase(OP_CLOSURE) { + Proto *p = cl->p->p[GETARG_Bx(i)]; + LClosure *ncl = getcached(p, cl->upvals, base); /* cached closure */ + if (ncl == NULL) /* no match? */ + pushclosure(L, p, cl->upvals, base, ra); /* create a new one */ + else + setclLvalue(L, ra, ncl); /* push cashed closure */ + checkGC(L, ra + 1); + vmbreak; + } + vmcase(OP_VARARG) { + int b = GETARG_B(i) - 1; /* required results */ + int j; + int n = cast_int(base - ci->func) - cl->p->numparams - 1; + if (n < 0) /* less arguments than parameters? */ + n = 0; /* no vararg arguments */ + if (b < 0) { /* B == 0? */ + b = n; /* get all var. arguments */ + Protect(luaD_checkstack(L, n)); + ra = RA(i); /* previous call may change the stack */ + L->top = ra + n; + } + for (j = 0; j < b && j < n; j++) + setobjs2s(L, ra + j, base - n + j); + for (; j < b; j++) /* complete required results with nil */ + setnilvalue(ra + j); + vmbreak; + } + vmcase(OP_EXTRAARG) { + lua_assert(0); + vmbreak; + } + } + } +} + +/* }================================================================== */ + diff --git a/deps/rcheevos/test/lua/src/lvm.h b/deps/rcheevos/test/lua/src/lvm.h new file mode 100644 index 0000000000..422f871949 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lvm.h @@ -0,0 +1,113 @@ +/* +** $Id: lvm.h,v 2.41 2016/12/22 13:08:50 roberto Exp $ +** Lua virtual machine +** See Copyright Notice in lua.h +*/ + +#ifndef lvm_h +#define lvm_h + + +#include "ldo.h" +#include "lobject.h" +#include "ltm.h" + + +#if !defined(LUA_NOCVTN2S) +#define cvt2str(o) ttisnumber(o) +#else +#define cvt2str(o) 0 /* no conversion from numbers to strings */ +#endif + + +#if !defined(LUA_NOCVTS2N) +#define cvt2num(o) ttisstring(o) +#else +#define cvt2num(o) 0 /* no conversion from strings to numbers */ +#endif + + +/* +** You can define LUA_FLOORN2I if you want to convert floats to integers +** by flooring them (instead of raising an error if they are not +** integral values) +*/ +#if !defined(LUA_FLOORN2I) +#define LUA_FLOORN2I 0 +#endif + + +#define tonumber(o,n) \ + (ttisfloat(o) ? (*(n) = fltvalue(o), 1) : luaV_tonumber_(o,n)) + +#define tointeger(o,i) \ + (ttisinteger(o) ? (*(i) = ivalue(o), 1) : luaV_tointeger(o,i,LUA_FLOORN2I)) + +#define intop(op,v1,v2) l_castU2S(l_castS2U(v1) op l_castS2U(v2)) + +#define luaV_rawequalobj(t1,t2) luaV_equalobj(NULL,t1,t2) + + +/* +** fast track for 'gettable': if 't' is a table and 't[k]' is not nil, +** return 1 with 'slot' pointing to 't[k]' (final result). Otherwise, +** return 0 (meaning it will have to check metamethod) with 'slot' +** pointing to a nil 't[k]' (if 't' is a table) or NULL (otherwise). +** 'f' is the raw get function to use. +*/ +#define luaV_fastget(L,t,k,slot,f) \ + (!ttistable(t) \ + ? (slot = NULL, 0) /* not a table; 'slot' is NULL and result is 0 */ \ + : (slot = f(hvalue(t), k), /* else, do raw access */ \ + !ttisnil(slot))) /* result not nil? */ + +/* +** standard implementation for 'gettable' +*/ +#define luaV_gettable(L,t,k,v) { const TValue *slot; \ + if (luaV_fastget(L,t,k,slot,luaH_get)) { setobj2s(L, v, slot); } \ + else luaV_finishget(L,t,k,v,slot); } + + +/* +** Fast track for set table. If 't' is a table and 't[k]' is not nil, +** call GC barrier, do a raw 't[k]=v', and return true; otherwise, +** return false with 'slot' equal to NULL (if 't' is not a table) or +** 'nil'. (This is needed by 'luaV_finishget'.) Note that, if the macro +** returns true, there is no need to 'invalidateTMcache', because the +** call is not creating a new entry. +*/ +#define luaV_fastset(L,t,k,slot,f,v) \ + (!ttistable(t) \ + ? (slot = NULL, 0) \ + : (slot = f(hvalue(t), k), \ + ttisnil(slot) ? 0 \ + : (luaC_barrierback(L, hvalue(t), v), \ + setobj2t(L, cast(TValue *,slot), v), \ + 1))) + + +#define luaV_settable(L,t,k,v) { const TValue *slot; \ + if (!luaV_fastset(L,t,k,slot,luaH_get,v)) \ + luaV_finishset(L,t,k,v,slot); } + + + +LUAI_FUNC int luaV_equalobj (lua_State *L, const TValue *t1, const TValue *t2); +LUAI_FUNC int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r); +LUAI_FUNC int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r); +LUAI_FUNC int luaV_tonumber_ (const TValue *obj, lua_Number *n); +LUAI_FUNC int luaV_tointeger (const TValue *obj, lua_Integer *p, int mode); +LUAI_FUNC void luaV_finishget (lua_State *L, const TValue *t, TValue *key, + StkId val, const TValue *slot); +LUAI_FUNC void luaV_finishset (lua_State *L, const TValue *t, TValue *key, + StkId val, const TValue *slot); +LUAI_FUNC void luaV_finishOp (lua_State *L); +LUAI_FUNC void luaV_execute (lua_State *L); +LUAI_FUNC void luaV_concat (lua_State *L, int total); +LUAI_FUNC lua_Integer luaV_div (lua_State *L, lua_Integer x, lua_Integer y); +LUAI_FUNC lua_Integer luaV_mod (lua_State *L, lua_Integer x, lua_Integer y); +LUAI_FUNC lua_Integer luaV_shiftl (lua_Integer x, lua_Integer y); +LUAI_FUNC void luaV_objlen (lua_State *L, StkId ra, const TValue *rb); + +#endif diff --git a/deps/rcheevos/test/lua/src/lzio.c b/deps/rcheevos/test/lua/src/lzio.c new file mode 100644 index 0000000000..c9e1f491f3 --- /dev/null +++ b/deps/rcheevos/test/lua/src/lzio.c @@ -0,0 +1,68 @@ +/* +** $Id: lzio.c,v 1.37 2015/09/08 15:41:05 roberto Exp $ +** Buffered streams +** See Copyright Notice in lua.h +*/ + +#define lzio_c +#define LUA_CORE + +#include "lprefix.h" + + +#include + +#include "lua.h" + +#include "llimits.h" +#include "lmem.h" +#include "lstate.h" +#include "lzio.h" + + +int luaZ_fill (ZIO *z) { + size_t size; + lua_State *L = z->L; + const char *buff; + lua_unlock(L); + buff = z->reader(L, z->data, &size); + lua_lock(L); + if (buff == NULL || size == 0) + return EOZ; + z->n = size - 1; /* discount char being returned */ + z->p = buff; + return cast_uchar(*(z->p++)); +} + + +void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader, void *data) { + z->L = L; + z->reader = reader; + z->data = data; + z->n = 0; + z->p = NULL; +} + + +/* --------------------------------------------------------------- read --- */ +size_t luaZ_read (ZIO *z, void *b, size_t n) { + while (n) { + size_t m; + if (z->n == 0) { /* no bytes in buffer? */ + if (luaZ_fill(z) == EOZ) /* try to read more */ + return n; /* no more input; return number of missing bytes */ + else { + z->n++; /* luaZ_fill consumed first byte; put it back */ + z->p--; + } + } + m = (n <= z->n) ? n : z->n; /* min. between n and z->n */ + memcpy(b, z->p, m); + z->n -= m; + z->p += m; + b = (char *)b + m; + n -= m; + } + return 0; +} + diff --git a/deps/rcheevos/test/lua/src/lzio.h b/deps/rcheevos/test/lua/src/lzio.h new file mode 100644 index 0000000000..e7b6f34b1e --- /dev/null +++ b/deps/rcheevos/test/lua/src/lzio.h @@ -0,0 +1,66 @@ +/* +** $Id: lzio.h,v 1.31 2015/09/08 15:41:05 roberto Exp $ +** Buffered streams +** See Copyright Notice in lua.h +*/ + + +#ifndef lzio_h +#define lzio_h + +#include "lua.h" + +#include "lmem.h" + + +#define EOZ (-1) /* end of stream */ + +typedef struct Zio ZIO; + +#define zgetc(z) (((z)->n--)>0 ? cast_uchar(*(z)->p++) : luaZ_fill(z)) + + +typedef struct Mbuffer { + char *buffer; + size_t n; + size_t buffsize; +} Mbuffer; + +#define luaZ_initbuffer(L, buff) ((buff)->buffer = NULL, (buff)->buffsize = 0) + +#define luaZ_buffer(buff) ((buff)->buffer) +#define luaZ_sizebuffer(buff) ((buff)->buffsize) +#define luaZ_bufflen(buff) ((buff)->n) + +#define luaZ_buffremove(buff,i) ((buff)->n -= (i)) +#define luaZ_resetbuffer(buff) ((buff)->n = 0) + + +#define luaZ_resizebuffer(L, buff, size) \ + ((buff)->buffer = luaM_reallocvchar(L, (buff)->buffer, \ + (buff)->buffsize, size), \ + (buff)->buffsize = size) + +#define luaZ_freebuffer(L, buff) luaZ_resizebuffer(L, buff, 0) + + +LUAI_FUNC void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader, + void *data); +LUAI_FUNC size_t luaZ_read (ZIO* z, void *b, size_t n); /* read next n bytes */ + + + +/* --------- Private Part ------------------ */ + +struct Zio { + size_t n; /* bytes still unread */ + const char *p; /* current position in buffer */ + lua_Reader reader; /* reader function */ + void *data; /* additional data */ + lua_State *L; /* Lua state (for reader) */ +}; + + +LUAI_FUNC int luaZ_fill (ZIO *z); + +#endif diff --git a/deps/rcheevos/test/rcheevos-test.sln b/deps/rcheevos/test/rcheevos-test.sln new file mode 100644 index 0000000000..b7e80f6e76 --- /dev/null +++ b/deps/rcheevos/test/rcheevos-test.sln @@ -0,0 +1,31 @@ + +Microsoft Visual Studio Solution File, Format Version 12.00 +# Visual Studio 15 +VisualStudioVersion = 15.0.28010.2036 +MinimumVisualStudioVersion = 10.0.40219.1 +Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "rcheevos-test", "rcheevos-test.vcxproj", "{74FBBFC4-5AC5-4A86-B292-B2F535E9912C}" +EndProject +Global + GlobalSection(SolutionConfigurationPlatforms) = preSolution + Debug|x64 = Debug|x64 + Debug|x86 = Debug|x86 + Release|x64 = Release|x64 + Release|x86 = Release|x86 + EndGlobalSection + GlobalSection(ProjectConfigurationPlatforms) = postSolution + {74FBBFC4-5AC5-4A86-B292-B2F535E9912C}.Debug|x64.ActiveCfg = Debug|x64 + {74FBBFC4-5AC5-4A86-B292-B2F535E9912C}.Debug|x64.Build.0 = Debug|x64 + {74FBBFC4-5AC5-4A86-B292-B2F535E9912C}.Debug|x86.ActiveCfg = Debug|Win32 + {74FBBFC4-5AC5-4A86-B292-B2F535E9912C}.Debug|x86.Build.0 = Debug|Win32 + {74FBBFC4-5AC5-4A86-B292-B2F535E9912C}.Release|x64.ActiveCfg = Release|x64 + {74FBBFC4-5AC5-4A86-B292-B2F535E9912C}.Release|x64.Build.0 = Release|x64 + {74FBBFC4-5AC5-4A86-B292-B2F535E9912C}.Release|x86.ActiveCfg = Release|Win32 + {74FBBFC4-5AC5-4A86-B292-B2F535E9912C}.Release|x86.Build.0 = Release|Win32 + EndGlobalSection + GlobalSection(SolutionProperties) = preSolution + HideSolutionNode = FALSE + EndGlobalSection + GlobalSection(ExtensibilityGlobals) = postSolution + SolutionGuid = {02ADF144-5109-40C0-AA02-5BC5585A9883} + EndGlobalSection +EndGlobal diff --git a/deps/rcheevos/test/rcheevos-test.vcxproj b/deps/rcheevos/test/rcheevos-test.vcxproj new file mode 100644 index 0000000000..1c2d7a4c2d --- /dev/null +++ b/deps/rcheevos/test/rcheevos-test.vcxproj @@ -0,0 +1,176 @@ + + + + + Debug + Win32 + + + Release + Win32 + + + Debug + x64 + + + Release + x64 + + + + 15.0 + {74FBBFC4-5AC5-4A86-B292-B2F535E9912C} + rcheevostest + 10.0.17134.0 + + + + Application + true + v141 + MultiByte + + + Application + false + v141 + true + MultiByte + + + Application + true + v141 + MultiByte + + + Application + false + v141 + true + MultiByte + + + + + + + + + + + + + + + + + + + + + + + Level3 + Disabled + true + true + $(ProjectDir)..\include;$(ProjectDir)..\src\rcheevos;$(ProjectDir)lua\src + + + Console + + + + + Level3 + Disabled + true + true + + + + + Level3 + MaxSpeed + true + true + true + true + $(ProjectDir)..\include;$(ProjectDir)..\src\rcheevos;$(ProjectDir)lua\src + + + true + true + Console + + + + + Level3 + MaxSpeed + true + true + true + true + + + true + true + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/deps/rcheevos/test/rcheevos-test.vcxproj.filters b/deps/rcheevos/test/rcheevos-test.vcxproj.filters new file mode 100644 index 0000000000..078377a776 --- /dev/null +++ b/deps/rcheevos/test/rcheevos-test.vcxproj.filters @@ -0,0 +1,151 @@ + + + + + {43b6b53b-c37e-453e-97bf-df56c515f1a7} + + + {9d6d4e6d-a0b7-4181-b536-93e34de1e625} + + + + + rcheevos + + + rcheevos + + + rcheevos + + + rcheevos + + + rcheevos + + + rcheevos + + + rcheevos + + + rcheevos + + + rcheevos + + + rcheevos + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + lua + + + + rcheevos + + + + + rcheevos + + + \ No newline at end of file diff --git a/deps/rcheevos/test/test.c b/deps/rcheevos/test/test.c index 73842bfcfc..dbebe736ac 100644 --- a/deps/rcheevos/test/test.c +++ b/deps/rcheevos/test/test.c @@ -13,7 +13,7 @@ typedef struct { unsigned char* ram; - int size; + unsigned size; } memory_t; @@ -44,6 +44,7 @@ static void parse_operand(rc_operand_t* self, const char** memaddr) { assert(ret >= 0); assert(**memaddr == 0); self->previous = 0; + self->prior = 0; } static void comp_operand(rc_operand_t* self, char expected_type, char expected_size, unsigned expected_value) { @@ -159,6 +160,38 @@ static void test_operand(void) { parse_comp_operand("d0xhabcd", RC_OPERAND_DELTA, RC_OPERAND_8_BITS, 0xABCDU); } + { + /*------------------------------------------------------------------------ + TestParseVariablePriorMem + ------------------------------------------------------------------------*/ + + /* sizes */ + parse_comp_operand("p0xH1234", RC_OPERAND_PRIOR, RC_OPERAND_8_BITS, 0x1234U); + parse_comp_operand("p0x 1234", RC_OPERAND_PRIOR, RC_OPERAND_16_BITS, 0x1234U); + parse_comp_operand("p0x1234", RC_OPERAND_PRIOR, RC_OPERAND_16_BITS, 0x1234U); + parse_comp_operand("p0xW1234", RC_OPERAND_PRIOR, RC_OPERAND_24_BITS, 0x1234U); + parse_comp_operand("p0xX1234", RC_OPERAND_PRIOR, RC_OPERAND_32_BITS, 0x1234U); + parse_comp_operand("p0xL1234", RC_OPERAND_PRIOR, RC_OPERAND_LOW, 0x1234U); + parse_comp_operand("p0xU1234", RC_OPERAND_PRIOR, RC_OPERAND_HIGH, 0x1234U); + parse_comp_operand("p0xM1234", RC_OPERAND_PRIOR, RC_OPERAND_BIT_0, 0x1234U); + parse_comp_operand("p0xN1234", RC_OPERAND_PRIOR, RC_OPERAND_BIT_1, 0x1234U); + parse_comp_operand("p0xO1234", RC_OPERAND_PRIOR, RC_OPERAND_BIT_2, 0x1234U); + parse_comp_operand("p0xP1234", RC_OPERAND_PRIOR, RC_OPERAND_BIT_3, 0x1234U); + parse_comp_operand("p0xQ1234", RC_OPERAND_PRIOR, RC_OPERAND_BIT_4, 0x1234U); + parse_comp_operand("p0xR1234", RC_OPERAND_PRIOR, RC_OPERAND_BIT_5, 0x1234U); + parse_comp_operand("p0xS1234", RC_OPERAND_PRIOR, RC_OPERAND_BIT_6, 0x1234U); + parse_comp_operand("p0xT1234", RC_OPERAND_PRIOR, RC_OPERAND_BIT_7, 0x1234U); + + /* ignores case */ + parse_comp_operand("P0Xh1234", RC_OPERAND_PRIOR, RC_OPERAND_8_BITS, 0x1234U); + + /* addresses */ + parse_comp_operand("p0xH0000", RC_OPERAND_PRIOR, RC_OPERAND_8_BITS, 0x0000U); + parse_comp_operand("p0xH12345678", RC_OPERAND_PRIOR, RC_OPERAND_8_BITS, 0x12345678U); + parse_comp_operand("p0xHABCD", RC_OPERAND_PRIOR, RC_OPERAND_8_BITS, 0xABCDU); + parse_comp_operand("p0xhabcd", RC_OPERAND_PRIOR, RC_OPERAND_8_BITS, 0xABCDU); + } + { /*------------------------------------------------------------------------ TestParseVariableValue @@ -279,6 +312,44 @@ static void test_operand(void) { assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x16U); assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x16U); } + + { + /*------------------------------------------------------------------------ + TestVariableGetValueDelta + ------------------------------------------------------------------------*/ + + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_operand_t op; + const char* memaddr; + + memory.ram = ram; + memory.size = sizeof(ram); + + memaddr = "p0xh1"; + parse_operand(&op, &memaddr); + + /* RC_OPERAND_PRIOR only updates when the memory value changes */ + assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x00); /* first call gets uninitialized value */ + assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x00); /* value only changes when memory changes */ + + ram[1] = 0x13; + assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x12U); + assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x12U); + assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x12U); + assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x12U); + + ram[1] = 0x14; + assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x13U); + + ram[1] = 0x15; + assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x14U); + + ram[1] = 0x16; + assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x15U); + assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x15U); + assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x15U); + } } static void parse_condition(rc_condition_t* self, const char* memaddr) { @@ -568,9 +639,13 @@ static void test_condition(void) { } static void parse_trigger(rc_trigger_t** self, void* buffer, const char* memaddr) { - assert(rc_trigger_size(memaddr) >= 0); + int ret = rc_trigger_size(memaddr); + assert(ret >= 0); + memset(buffer, 0xEE, ret + 128); + *self = rc_parse_trigger(buffer, memaddr, NULL, 0); assert(*self != NULL); + assert(*((int*)((char*)buffer + ret)) == 0xEEEEEEEE); } static void comp_trigger(rc_trigger_t* self, memory_t* memory, int expected_result) { @@ -608,6 +683,8 @@ static rc_condset_t* trigger_get_set(rc_trigger_t* trigger, int ndx) { } static void test_trigger(void) { + char buffer[2048]; + { /*------------------------------------------------------------------------ TestSimpleSets @@ -617,7 +694,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -681,7 +757,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -713,7 +788,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -737,7 +811,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -765,7 +838,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -814,7 +886,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -863,7 +934,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -896,7 +966,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -938,7 +1007,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -975,7 +1043,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -999,7 +1066,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -1030,7 +1096,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -1070,7 +1135,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -1107,7 +1171,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -1141,7 +1204,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -1180,7 +1242,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -1225,7 +1286,6 @@ static void test_trigger(void) { unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; memory_t memory; rc_trigger_t* trigger; - char buffer[2048]; rc_condset_t* condset; @@ -1265,6 +1325,348 @@ static void test_trigger(void) { assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 3U); } + { + /*------------------------------------------------------------------------ + TestAndNext + ------------------------------------------------------------------------*/ + + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_trigger_t* trigger; + + memory.ram = ram; + memory.size = sizeof(ram); + + /* once(byte(0x0001) == 20 && byte(0x0002) == 20 && byte(0x0003) == 20) */ + parse_trigger(&trigger, buffer, "N:0xH0001=20_N:0xH0002=20_0xH0003=20.3."); + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + + ram[3] = 20; /* final condition is not enough to reset */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + + ram[2] = 20; /* two conditions is not enough to reset */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + + ram[1] = 20; /* all three conditions true, only count hit on final */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 1U); + + ram[2] = 30; /* middle condition not true */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 1U); + + ram[2] = 20; /* all three conditions true */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 2U); + + ram[3] = 30; /* third condition not true */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 2U); + + ram[3] = 20; /* all three conditions true, HitCount reached */ + comp_trigger(trigger, &memory, 1); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 3U); + + comp_trigger(trigger, &memory, 1); /* HitCount reached */ + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 3U); + } + + { + /*------------------------------------------------------------------------ + TestAndNextBoundaries + ------------------------------------------------------------------------*/ + + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_trigger_t* trigger; + char buffer[2048]; + + memory.ram = ram; + memory.size = sizeof(ram); + + /* byte(0x0000) == 0 && once(byte(0x0001) == 20 && byte(0x0002) == 20 && byte(0x0003) == 20) && byte(0x0000) == 0 */ + parse_trigger(&trigger, buffer, "0xH0000=0_N:0xH0001=20_N:0xH0002=20_0xH0003=20.1._0xH0000=0"); + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 4)->current_hits == 1U); + + ram[3] = 20; /* final condition is not enough to reset */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 4)->current_hits == 2U); + + ram[2] = 20; /* two conditions is not enough to reset */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 3U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 4)->current_hits == 3U); + + ram[1] = 20; /* all three conditions true, whole trigger is true */ + comp_trigger(trigger, &memory, 1); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 4U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 1U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 4)->current_hits == 4U); + } + + { + /*------------------------------------------------------------------------ + TestAndNextReset + ------------------------------------------------------------------------*/ + + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_trigger_t* trigger; + + memory.ram = ram; + memory.size = sizeof(ram); + + /* byte(0x0000) == 0 && never(byte(0x0001) == 20 && byte(0x0002) == 20 && byte(0x0003) == 20) */ + parse_trigger(&trigger, buffer, "0xH0000=0_N:0xH0001=20_N:0xH0002=20_R:0xH0003=20"); + comp_trigger(trigger, &memory, 1); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); + + ram[3] = 20; /* final condition is not enough to reset */ + comp_trigger(trigger, &memory, 1); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); + + ram[2] = 20; /* two conditions is not enough to reset */ + comp_trigger(trigger, &memory, 1); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 3U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); + + ram[1] = 20; /* all three conditions true, reset */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); + + ram[2] = 30; /* middle condition not true */ + comp_trigger(trigger, &memory, 1); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); + + ram[2] = 20; /* all three conditions true */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); + + ram[3] = 30; /* third condition not true */ + comp_trigger(trigger, &memory, 1); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); + + ram[3] = 20; /* all three conditions true */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); + } + + { + /*------------------------------------------------------------------------ + TestAndNextPause + ------------------------------------------------------------------------*/ + + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_trigger_t* trigger; + + memory.ram = ram; + memory.size = sizeof(ram); + + /* byte(0x0000) == 0 && never(byte(0x0001) == 20 && byte(0x0002) == 20 && byte(0x0003) == 20) */ + parse_trigger(&trigger, buffer, "0xH0000=0_N:0xH0001=20_N:0xH0002=20_P:0xH0003=20"); + comp_trigger(trigger, &memory, 1); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); + + ram[3] = 20; /* final condition is not enough to pause */ + comp_trigger(trigger, &memory, 1); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); + + ram[2] = 20; /* two conditions is not enough to pause */ + comp_trigger(trigger, &memory, 1); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 3U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); + + ram[1] = 20; /* all three conditions true, pause */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 3U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 1U); + + ram[2] = 30; /* middle condition not true */ + comp_trigger(trigger, &memory, 1); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 4U); + + ram[2] = 20; /* all three conditions true */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 4U); + + ram[3] = 30; /* third condition not true */ + comp_trigger(trigger, &memory, 1); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 5U); + + ram[3] = 20; /* all three conditions true */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 5U); + } + + { + /*------------------------------------------------------------------------ + TestAddHits + ------------------------------------------------------------------------*/ + + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_trigger_t* trigger; + char buffer[2048]; + + rc_condset_t* condset; + + memory.ram = ram; + memory.size = sizeof(ram); + + parse_trigger(&trigger, buffer, "C:0xH0001=18(2)_0xL0004=6(4)"); /* repeated(4, byte(1) == 18 || low(4) == 6) */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); + + comp_trigger(trigger, &memory, 1); /* total hits met (2 for each condition) */ + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); + + comp_trigger(trigger, &memory, 1); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); /* threshold met, stop incrementing */ + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); /* total met prevents incrementing even though individual tally has not reached total */ + + rc_reset_condset(trigger->requirement); + + for (condset = trigger->alternative; condset != NULL; condset = condset->next) + { + rc_reset_condset(condset); + } + + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); + + ram[1] = 16; + comp_trigger(trigger, &memory, 0); /* 1 + 2 < 4, not met */ + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); + + comp_trigger(trigger, &memory, 1); /* 1 + 3 = 4, met */ + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 3U); + } + + { + /*------------------------------------------------------------------------ + TestAndNextAddSource + ------------------------------------------------------------------------*/ + + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_trigger_t* trigger; + + memory.ram = ram; + memory.size = sizeof(ram); + + /* once(byte(0x0001) + byte(0x0002) == 20 && byte(0x0003) == 20) */ + parse_trigger(&trigger, buffer, "A:0xH0001=0_N:0xH0002=20_0xH0003=20.1."); + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + + ram[3] = 20; /* final condition is true */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + + ram[2] = 20; /* AddSource condition would be true if AddSource ignored */ + comp_trigger(trigger, &memory, 0); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); + + ram[2] = 10; + ram[1] = 10; /* AddSource condition true only via addition, whole trigger is true */ + comp_trigger(trigger, &memory, 1); + assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); + assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 1U); + } + + { + /*------------------------------------------------------------------------ + TestAndNextChangesTo + ------------------------------------------------------------------------*/ + + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_trigger_t* trigger; + char buffer[2048]; + + memory.ram = ram; + memory.size = sizeof(ram); + + /* byte(0x0001) ~> 18 */ + parse_trigger(&trigger, buffer, "N:0xH0001=18_d0xH0001!=18"); + + /* value already 18, initial delta value is 0, so considered changed */ + comp_trigger(trigger, &memory, 1); + + /* value already 18 */ + comp_trigger(trigger, &memory, 0); + + /* value no longer 18 */ + ram[1] = 20; + comp_trigger(trigger, &memory, 0); + + /* value changes to 18 */ + ram[1] = 18; + comp_trigger(trigger, &memory, 1); + + /* value already 18 */ + comp_trigger(trigger, &memory, 0); + } + { /*------------------------------------------------------------------------ TestAltGroups @@ -1532,6 +1934,7 @@ static void test_term(void) { parse_comp_term_fp("0xH1234*1", RC_OPERAND_8_BITS, 0x1234U, 1.0); parse_comp_term_fp("0xH1234*3", RC_OPERAND_8_BITS, 0x1234U, 3.0); parse_comp_term_fp("0xH1234*0.5", RC_OPERAND_8_BITS, 0x1234U, 0.5); + parse_comp_term_fp("0xH1234*.5", RC_OPERAND_8_BITS, 0x1234U, 0.5); parse_comp_term_fp("0xH1234*-1", RC_OPERAND_8_BITS, 0x1234U, -1.0); } @@ -1561,6 +1964,8 @@ static void test_term(void) { parse_comp_term_value("V6", &memory, 6); parse_comp_term_value("V6*2", &memory, 12); parse_comp_term_value("V6*0.5", &memory, 3); + parse_comp_term_value("V-6", &memory, (unsigned)(-6)); + parse_comp_term_value("V-6*2", &memory, (unsigned)(-12)); /* memory */ parse_comp_term_value("0xH01", &memory, 0x12); @@ -1587,9 +1992,11 @@ static void parse_comp_value(const char* memaddr, memory_t* memory, unsigned exp ret = rc_value_size(memaddr); assert(ret >= 0); + memset(buffer, 0xEE, ret + 128); self = rc_parse_value(buffer, memaddr, NULL, 0); assert(self != NULL); + assert(*((int*)((char*)buffer + ret)) == 0xEEEEEEEE); assert(rc_evaluate_value(self, peek, memory, NULL) == expected_value); } @@ -1671,8 +2078,12 @@ static rc_lboard_t* parse_lboard(const char* memaddr, void* buffer) { ret = rc_lboard_size(memaddr); assert(ret >= 0); + memset(buffer, 0xEE, ret + 128); + self = rc_parse_lboard(buffer, memaddr, NULL, 0); assert(self != NULL); + assert(*((int*)((char*)buffer + ret)) == 0xEEEEEEEE); + return self; } @@ -1713,6 +2124,8 @@ static unsigned lboard_evaluate(rc_lboard_t* lboard, lboard_test_state_t* test, } static void test_lboard(void) { + char buffer[2048]; + { /*------------------------------------------------------------------------ TestSimpleLeaderboard @@ -1722,7 +2135,6 @@ static void test_lboard(void) { memory_t memory; rc_lboard_t* lboard; lboard_test_state_t state; - char buffer[2048]; unsigned value; memory.ram = ram; @@ -1784,7 +2196,6 @@ static void test_lboard(void) { memory_t memory; rc_lboard_t* lboard; lboard_test_state_t state; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -1831,7 +2242,6 @@ static void test_lboard(void) { memory_t memory; rc_lboard_t* lboard; lboard_test_state_t state; - char buffer[2048]; unsigned value; memory.ram = ram; @@ -1867,7 +2277,6 @@ static void test_lboard(void) { memory_t memory; rc_lboard_t* lboard; lboard_test_state_t state; - char buffer[2048]; unsigned value; memory.ram = ram; @@ -1897,7 +2306,6 @@ static void test_lboard(void) { memory_t memory; rc_lboard_t* lboard; lboard_test_state_t state; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -1922,7 +2330,6 @@ static void test_lboard(void) { memory_t memory; rc_lboard_t* lboard; lboard_test_state_t state; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -1956,7 +2363,6 @@ static void test_lboard(void) { memory_t memory; rc_lboard_t* lboard; lboard_test_state_t state; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -1990,7 +2396,6 @@ static void test_lboard(void) { memory_t memory; rc_lboard_t* lboard; lboard_test_state_t state; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -2016,7 +2421,6 @@ static void test_lboard(void) { memory_t memory; rc_lboard_t* lboard; lboard_test_state_t state; - char buffer[2048]; memory.ram = ram; memory.size = sizeof(ram); @@ -2062,6 +2466,750 @@ static void test_lboard(void) { } } +static rc_richpresence_t* parse_richpresence(const char* script, void* buffer) { + int ret; + rc_richpresence_t* self; + + ret = rc_richpresence_size(script); + assert(ret >= 0); + memset(buffer, 0xEE, ret + 128); + + self = rc_parse_richpresence(buffer, script, NULL, 0); + assert(self != NULL); + assert(*((int*)((char*)buffer + ret)) == 0xEEEEEEEE); + + return self; +} + +static void test_richpresence(void) { + { + /*------------------------------------------------------------------------ + TestStaticDisplayString + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Display:\nHello, world!", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "Hello, world!") == 0); + assert(result == 13); + } + + { + /*------------------------------------------------------------------------ + TestEscapedComment + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Display:\nWhat \\// Where", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "What // Where") == 0); + assert(result == 13); + } + + { + /*------------------------------------------------------------------------ + TestEscapedBackslash + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Display:\nWhat \\\\ Where", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "What \\ Where") == 0); + assert(result == 12); + } + + { + /*------------------------------------------------------------------------ + TestPartiallyEscapedComment + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Display:\nWhat \\/// Where", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "What /") == 0); + assert(result == 6); + } + + { + /*------------------------------------------------------------------------ + TestTrailingBackslash + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Display:\nWhat \\", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "What ") == 0); + assert(result == 5); + } + + { + /*------------------------------------------------------------------------ + TestConditionalDisplay + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Display:\n?0xH0000=0?Zero\n?0xH0000=1?One\nOther", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "Zero") == 0); + assert(result == 4); + + ram[0] = 1; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "One") == 0); + assert(result == 3); + + ram[0] = 2; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "Other") == 0); + assert(result == 5); + } + + { + /*------------------------------------------------------------------------ + TestConditionalDisplayOutOfOrder + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Display:\nOther\n?0xH0000=0?Zero\n?0xH0000=1?One", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "Other") == 0); + assert(result == 5); + } + + { + /*------------------------------------------------------------------------ + TestConditionalDisplayNoDefault + ------------------------------------------------------------------------*/ + int result = rc_richpresence_size("Display:\n?0xH0000=0?Zero"); + assert(result == RC_MISSING_DISPLAY_STRING); + } + + { + /*------------------------------------------------------------------------ + TestConditionalDisplayCommonPrefix + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Display:\n?0xH0000=0_0xH0001=18?First\n?0xH0000=0?Second\nThird", buffer); + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "First") == 0); + + ram[1] = 1; + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "Second") == 0); + + ram[0] = 1; + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "Third") == 0); + + ram[0] = 0; + ram[1] = 18; + richpresence = parse_richpresence("Display:\n?0xH0000=0?First\n?0xH0000=0_0xH0001=18?Second\nThird", buffer); + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "First") == 0); + + ram[1] = 1; + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "First") == 0); + + ram[0] = 1; + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "Third") == 0); + } + + { + /*------------------------------------------------------------------------ + TestConditionalDisplayDuplicatedCondition + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Display:\n?0xH0000=0?First\n?0xH0000=0?Second\nThird", buffer); + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "First") == 0); + + ram[0] = 1; + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "Third") == 0); + } + + { + /*------------------------------------------------------------------------ + TestConditionalDisplayInvalidCondition + ------------------------------------------------------------------------*/ + int result = rc_richpresence_size("Display:\n?BANANA?First\nOther"); + assert(result == RC_INVALID_MEMORY_OPERAND); + } + + { + /*------------------------------------------------------------------------ + TestValueMacro + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Format:Points\nFormatType=VALUE\n\nDisplay:\n@Points(0x 0001) Points", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "13330 Points") == 0); + assert(result == 12); + + ram[1] = 20; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "13332 Points") == 0); + assert(result == 12); + } + + { + /*------------------------------------------------------------------------ + TestFramesMacro + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Format:Frames\nFormatType=FRAMES\n\nDisplay:\n@Frames(0x 0001)", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "03:42.16") == 0); + assert(result == 8); + + ram[1] = 20; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "03:42.20") == 0); + assert(result == 8); + } + + { + /*------------------------------------------------------------------------ + TestValueMacroFormula + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Format:Points\nFormatType=VALUE\n\nDisplay:\n@Points(0xH0001*100_0xH0002) Points", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "1852 Points") == 0); + assert(result == 11); + + ram[1] = 0x20; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "3252 Points") == 0); + assert(result == 11); + } + + { + /*------------------------------------------------------------------------ + TestUndefinedMacro + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Display:\n@Points(0x 0001) Points", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "[Unknown macro]Points(0x 0001) Points") == 0); + assert(result == 37); + } + + { + /*------------------------------------------------------------------------ + TestEscapedMacro + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Format:Points\nFormatType=VALUE\n\nDisplay:\n\\@Points(0x 0001) \\@@Points(0x 0001) Points", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "@Points(0x 0001) @13330 Points") == 0); + assert(result == 30); + } + + { + /*------------------------------------------------------------------------ + TestLookup + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Lookup:Location\n0=Zero\n1=One\n\nDisplay:\nAt @Location(0xH0000)", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Zero") == 0); + assert(result == 7); + + ram[0] = 1; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At One") == 0); + assert(result == 6); + + ram[0] = 2; /* no entry */ + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At ") == 0); + assert(result == 3); + } + + { + /*------------------------------------------------------------------------ + TestLookupFormula + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Lookup:Location\n0=Zero\n1=One\n\nDisplay:\nAt @Location(0xH0000*0.5)", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Zero") == 0); + assert(result == 7); + + ram[0] = 1; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Zero") == 0); + assert(result == 7); + + ram[0] = 2; /* no entry */ + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At One") == 0); + assert(result == 6); + } + + { + /*------------------------------------------------------------------------ + TestLookupRepeated + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Lookup:Location\n0=Zero\n1=One\n\nDisplay:\nAt @Location(0xH0000), Near @Location(0xH0001)", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Zero, Near ") == 0); + assert(result == 14); + + ram[1] = 1; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Zero, Near One") == 0); + assert(result == 17); + + ram[0] = 1; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At One, Near One") == 0); + assert(result == 16); + } + + { + /*------------------------------------------------------------------------ + TestLookupMultiple + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Lookup:Location\n0=Zero\n1=One\n\nLookup:Location2\n0=zero\n1=one\n\nDisplay:\nAt @Location(0xH0000), Near @Location2(0xH0001)", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Zero, Near ") == 0); + assert(result == 14); + + ram[1] = 1; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Zero, Near one") == 0); + assert(result == 17); + + ram[0] = 1; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At One, Near one") == 0); + assert(result == 16); + } + + { + /*------------------------------------------------------------------------ + TestLookupAndValue + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Lookup:Location\n0=Zero\n1=One\n\nFormat:Location2\nFormatType=VALUE\n\nDisplay:\nAt @Location(0xH0000), Near @Location2(0xH0001)", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Zero, Near 18") == 0); + assert(result == 16); + + ram[1] = 1; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Zero, Near 1") == 0); + assert(result == 15); + + ram[0] = 1; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At One, Near 1") == 0); + assert(result == 14); + } + + { + /*------------------------------------------------------------------------ + TestLookupHexKeys + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Lookup:Location\n0x00=Zero\n0x01=One\n\nDisplay:\nAt @Location(0xH0000)", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Zero") == 0); + assert(result == 7); + + ram[0] = 1; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At One") == 0); + assert(result == 6); + + ram[0] = 2; /* no entry */ + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At ") == 0); + assert(result == 3); + } + + { + /*------------------------------------------------------------------------ + TestLookupDefault + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Lookup:Location\n0=Zero\n1=One\n*=Star\n\nDisplay:\nAt @Location(0xH0000)", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Zero") == 0); + assert(result == 7); + + ram[0] = 1; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At One") == 0); + assert(result == 6); + + ram[0] = 2; /* no entry */ + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Star") == 0); + assert(result == 7); + } + + { + /*------------------------------------------------------------------------ + TestLookupCRLF + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Lookup:Location\r\n0=Zero\r\n1=One\r\n\r\nDisplay:\r\nAt @Location(0xH0000)\r\n", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Zero") == 0); + assert(result == 7); + + ram[0] = 1; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At One") == 0); + assert(result == 6); + + ram[0] = 2; /* no entry */ + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At ") == 0); + assert(result == 3); + } + + { + /*------------------------------------------------------------------------ + TestLookupAfterDisplay + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Display:\nAt @Location(0xH0000)\n\nLookup:Location\n0=Zero\n1=One", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Zero") == 0); + assert(result == 7); + + ram[0] = 1; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At One") == 0); + assert(result == 6); + + ram[0] = 2; /* no entry */ + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At ") == 0); + assert(result == 3); + } + + { + /*------------------------------------------------------------------------ + TestLookupWhitespace + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + int result; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Lookup:Location\n0= Zero \n1= One \n\nDisplay:\nAt '@Location(0xH0000)' ", buffer); + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At ' Zero ' ") == 0); + assert(result == 12); + + ram[0] = 1; + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At ' One ' ") == 0); + assert(result == 11); + + ram[0] = 2; /* no entry */ + result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At '' ") == 0); + assert(result == 6); + } + + { + /*------------------------------------------------------------------------ + TestRandomTextBetweenSections + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + + memory.ram = ram; + memory.size = sizeof(ram); + + /* Anything that doesn't begin with "Format:" "Lookup:" or "Display:" is ignored. People sometimes + use this logic to add comments to the Rich Presence script - particularly author comments */ + richpresence = parse_richpresence("Locations are fun!\nLookup:Location\n0=Zero\n1=One\n\nDisplay goes here\nDisplay:\nAt @Location(0xH0000)\n\nWritten by User3", buffer); + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Zero") == 0); + + ram[0] = 1; + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At One") == 0); + + ram[0] = 2; /* no entry */ + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At ") == 0); + } + + { + /*------------------------------------------------------------------------ + TestComments + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("// Locations are fun!\nLookup:Location // lookup\n0=Zero // 0\n1=One // 1\n\n//Display goes here\nDisplay: // display\nAt @Location(0xH0000) // text\n\n//Written by User3", buffer); + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Zero") == 0); + + ram[0] = 1; + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At One") == 0); + + ram[0] = 2; /* no entry */ + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At ") == 0); + } + + { + /*------------------------------------------------------------------------ + TestConditionalDisplaySharedLookup + ------------------------------------------------------------------------*/ + unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; + memory_t memory; + rc_richpresence_t* richpresence; + char buffer[2048]; + char output[128]; + + memory.ram = ram; + memory.size = sizeof(ram); + + richpresence = parse_richpresence("Lookup:Location\n0x00=Zero\n0x01=One\n\nDisplay:\n?0xH0001=18?At @Location(0xH0000)\nNear @Location(0xH0000)", buffer); + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At Zero") == 0); + + ram[0] = 1; + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "At One") == 0); + + ram[1] = 17; + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "Near One") == 0); + + ram[0] = 0; + rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); + assert(strcmp(output, "Near Zero") == 0); + } +} + static void test_lua(void) { { /*------------------------------------------------------------------------ @@ -2101,6 +3249,7 @@ int main(void) { test_term(); test_value(); test_lboard(); + test_richpresence(); test_lua(); return 0; From d444044fde99a6f0e295bb52fc9573ce972fe0c6 Mon Sep 17 00:00:00 2001 From: meleu Date: Tue, 19 Mar 2019 21:19:08 -0300 Subject: [PATCH 3/9] decrease log massive verbosity when leaderboard is active --- cheevos-new/cheevos.c | 1 - cheevos/cheevos.c | 2 -- 2 files changed, 3 deletions(-) diff --git a/cheevos-new/cheevos.c b/cheevos-new/cheevos.c index c37a9e68f6..9399856c5c 100644 --- a/cheevos-new/cheevos.c +++ b/cheevos-new/cheevos.c @@ -662,7 +662,6 @@ static void cheevos_test_leaderboards(void) if (value != lboard->last_value) { - CHEEVOS_LOG(CHEEVOS_TAG "Value lboard %s %u\n", lboard->info->title, value); lboard->last_value = value; } diff --git a/cheevos/cheevos.c b/cheevos/cheevos.c index d56afeaab5..4608b0222c 100644 --- a/cheevos/cheevos.c +++ b/cheevos/cheevos.c @@ -1853,8 +1853,6 @@ static void cheevos_test_leaderboards(void) if (value != lboard->last_value) { - CHEEVOS_LOG("[CHEEVOS]: value lboard %s %u\n", - lboard->title, value); lboard->last_value = value; } From dda6716926f097ae2e903270f9cc0c2d5cd15c08 Mon Sep 17 00:00:00 2001 From: meleu Date: Tue, 19 Mar 2019 22:36:54 -0300 Subject: [PATCH 4/9] more namespacing work & del rcheevos/test/* files --- cheevos-new/cheevos.c | 620 +- cheevos-new/coro.h | 4 +- cheevos-new/fixup.c | 48 +- cheevos-new/fixup.h | 12 +- cheevos-new/hash.c | 2 +- cheevos-new/hash.h | 2 +- cheevos-new/parser.c | 188 +- cheevos-new/parser.h | 22 +- cheevos-new/util.h | 6 +- cheevos/var.c | 2 +- deps/rcheevos/test/Makefile | 36 - deps/rcheevos/test/galaga_nes.json | 205 - deps/rcheevos/test/lua/Makefile | 114 - deps/rcheevos/test/lua/README | 6 - deps/rcheevos/test/lua/doc/contents.html | 619 - deps/rcheevos/test/lua/doc/index.css | 21 - deps/rcheevos/test/lua/doc/logo.gif | Bin 9893 -> 0 bytes deps/rcheevos/test/lua/doc/lua.1 | 112 - deps/rcheevos/test/lua/doc/lua.css | 164 - deps/rcheevos/test/lua/doc/luac.1 | 118 - deps/rcheevos/test/lua/doc/manual.css | 21 - deps/rcheevos/test/lua/doc/manual.html | 10985 ---------------- .../test/lua/doc/osi-certified-72x60.png | Bin 3774 -> 0 bytes deps/rcheevos/test/lua/doc/readme.html | 365 - deps/rcheevos/test/lua/src/Makefile | 197 - deps/rcheevos/test/lua/src/lapi.c | 1298 -- deps/rcheevos/test/lua/src/lapi.h | 24 - deps/rcheevos/test/lua/src/lauxlib.c | 1043 -- deps/rcheevos/test/lua/src/lauxlib.h | 264 - deps/rcheevos/test/lua/src/lbaselib.c | 498 - deps/rcheevos/test/lua/src/lbitlib.c | 233 - deps/rcheevos/test/lua/src/lcode.c | 1203 -- deps/rcheevos/test/lua/src/lcode.h | 88 - deps/rcheevos/test/lua/src/lcorolib.c | 168 - deps/rcheevos/test/lua/src/lctype.c | 55 - deps/rcheevos/test/lua/src/lctype.h | 95 - deps/rcheevos/test/lua/src/ldblib.c | 456 - deps/rcheevos/test/lua/src/ldebug.c | 698 - deps/rcheevos/test/lua/src/ldebug.h | 39 - deps/rcheevos/test/lua/src/ldo.c | 802 -- deps/rcheevos/test/lua/src/ldo.h | 58 - deps/rcheevos/test/lua/src/ldump.c | 215 - deps/rcheevos/test/lua/src/lfunc.c | 151 - deps/rcheevos/test/lua/src/lfunc.h | 61 - deps/rcheevos/test/lua/src/lgc.c | 1178 -- deps/rcheevos/test/lua/src/lgc.h | 147 - deps/rcheevos/test/lua/src/linit.c | 68 - deps/rcheevos/test/lua/src/liolib.c | 771 -- deps/rcheevos/test/lua/src/llex.c | 565 - deps/rcheevos/test/lua/src/llex.h | 85 - deps/rcheevos/test/lua/src/llimits.h | 323 - deps/rcheevos/test/lua/src/lmathlib.c | 410 - deps/rcheevos/test/lua/src/lmem.c | 100 - deps/rcheevos/test/lua/src/lmem.h | 69 - deps/rcheevos/test/lua/src/loadlib.c | 790 -- deps/rcheevos/test/lua/src/lobject.c | 521 - deps/rcheevos/test/lua/src/lobject.h | 549 - deps/rcheevos/test/lua/src/lopcodes.c | 124 - deps/rcheevos/test/lua/src/lopcodes.h | 297 - deps/rcheevos/test/lua/src/loslib.c | 407 - deps/rcheevos/test/lua/src/lparser.c | 1650 --- deps/rcheevos/test/lua/src/lparser.h | 133 - deps/rcheevos/test/lua/src/lprefix.h | 45 - deps/rcheevos/test/lua/src/lstate.c | 347 - deps/rcheevos/test/lua/src/lstate.h | 235 - deps/rcheevos/test/lua/src/lstring.c | 248 - deps/rcheevos/test/lua/src/lstring.h | 49 - deps/rcheevos/test/lua/src/lstrlib.c | 1584 --- deps/rcheevos/test/lua/src/ltable.c | 669 - deps/rcheevos/test/lua/src/ltable.h | 66 - deps/rcheevos/test/lua/src/ltablib.c | 450 - deps/rcheevos/test/lua/src/ltm.c | 165 - deps/rcheevos/test/lua/src/ltm.h | 76 - deps/rcheevos/test/lua/src/lua.c | 612 - deps/rcheevos/test/lua/src/lua.h | 486 - deps/rcheevos/test/lua/src/lua.hpp | 9 - deps/rcheevos/test/lua/src/luac.c | 449 - deps/rcheevos/test/lua/src/luaconf.h | 783 -- deps/rcheevos/test/lua/src/lualib.h | 61 - deps/rcheevos/test/lua/src/lundump.c | 279 - deps/rcheevos/test/lua/src/lundump.h | 32 - deps/rcheevos/test/lua/src/lutf8lib.c | 256 - deps/rcheevos/test/lua/src/lvm.c | 1322 -- deps/rcheevos/test/lua/src/lvm.h | 113 - deps/rcheevos/test/lua/src/lzio.c | 68 - deps/rcheevos/test/lua/src/lzio.h | 66 - 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rc_trigger_t* trigger; - const cheevos_racheevo_t* info; + const rcheevos_racheevo_t* info; int active; int last; -} cheevos_cheevo_t; +} rcheevos_cheevo_t; typedef struct { rc_lboard_t* lboard; - const cheevos_ralboard_t* info; + const rcheevos_ralboard_t* info; bool active; unsigned last_value; int format; -} cheevos_lboard_t; +} rcheevos_lboard_t; typedef struct { @@ -117,22 +117,22 @@ typedef struct bool core_supports; - cheevos_rapatchdata_t patchdata; - cheevos_cheevo_t* core; - cheevos_cheevo_t* unofficial; - cheevos_lboard_t* lboards; + rcheevos_rapatchdata_t patchdata; + rcheevos_cheevo_t* core; + rcheevos_cheevo_t* unofficial; + rcheevos_lboard_t* lboards; - cheevos_fixups_t fixups; + rcheevos_fixups_t fixups; char token[32]; -} cheevos_locals_t; +} rcheevos_locals_t; typedef struct { int label; const char* name; const uint32_t* ext_hashes; -} cheevos_finder_t; +} rcheevos_finder_t; typedef struct { @@ -142,9 +142,9 @@ typedef struct uint8_t rom_type; uint8_t rom_type2; uint8_t reserve[8]; -} cheevos_nes_header_t; +} rcheevos_nes_header_t; -static cheevos_locals_t cheevos_locals = +static rcheevos_locals_t rcheevos_locals = { NULL, /* task */ #ifdef HAVE_THREADS @@ -182,14 +182,14 @@ Supporting functions. #ifndef CHEEVOS_VERBOSE -void cheevos_log(const char *fmt, ...) +void rcheevos_log(const char *fmt, ...) { (void)fmt; } #endif -static void cheevos_log_url(const char* format, const char* url) +static void rcheevos_log_url(const char* format, const char* url) { #ifdef CHEEVOS_LOG_URLS #ifdef CHEEVOS_LOG_PASSWORD @@ -252,7 +252,7 @@ static void cheevos_log_url(const char* format, const char* url) #endif } -static const char* cheevos_rc_error(int ret) +static const char* rcheevos_rc_error(int ret) { switch (ret) { @@ -278,52 +278,52 @@ static const char* cheevos_rc_error(int ret) } } -static int cheevos_parse(const char* json) +static int rcheevos_parse(const char* json) { int res = 0; int i = 0; unsigned j = 0; unsigned count = 0; - cheevos_cheevo_t* cheevo = NULL; - cheevos_lboard_t* lboard = NULL; - cheevos_racheevo_t* rac = NULL; + rcheevos_cheevo_t* cheevo = NULL; + rcheevos_lboard_t* lboard = NULL; + rcheevos_racheevo_t* rac = NULL; - rcheevos_fixup_init(&cheevos_locals.fixups); + rcheevos_fixup_init(&rcheevos_locals.fixups); - res = cheevos_get_patchdata(json, &cheevos_locals.patchdata); + res = rcheevos_get_patchdata(json, &rcheevos_locals.patchdata); if (res != 0) { - RARCH_ERR(CHEEVOS_TAG "Error parsing cheevos"); + RARCH_ERR(RCHEEVOS_TAG "Error parsing cheevos"); return -1; } - if ( cheevos_locals.patchdata.core_count == 0 - && !cheevos_locals.patchdata.unofficial_count == 0 - && !cheevos_locals.patchdata.lboard_count == 0) + if ( rcheevos_locals.patchdata.core_count == 0 + && rcheevos_locals.patchdata.unofficial_count == 0 + && rcheevos_locals.patchdata.lboard_count == 0) { - cheevos_locals.core = NULL; - cheevos_locals.unofficial = NULL; - cheevos_locals.lboards = NULL; - cheevos_free_patchdata(&cheevos_locals.patchdata); + rcheevos_locals.core = NULL; + rcheevos_locals.unofficial = NULL; + rcheevos_locals.lboards = NULL; + rcheevos_free_patchdata(&rcheevos_locals.patchdata); return 0; } /* Allocate memory. */ - cheevos_locals.core = (cheevos_cheevo_t*) - calloc(cheevos_locals.patchdata.core_count, sizeof(cheevos_cheevo_t)); + rcheevos_locals.core = (rcheevos_cheevo_t*) + calloc(rcheevos_locals.patchdata.core_count, sizeof(rcheevos_cheevo_t)); - cheevos_locals.unofficial = (cheevos_cheevo_t*) - calloc(cheevos_locals.patchdata.unofficial_count, sizeof(cheevos_cheevo_t)); + rcheevos_locals.unofficial = (rcheevos_cheevo_t*) + calloc(rcheevos_locals.patchdata.unofficial_count, sizeof(rcheevos_cheevo_t)); - cheevos_locals.lboards = (cheevos_lboard_t*) - calloc(cheevos_locals.patchdata.lboard_count, sizeof(cheevos_lboard_t)); + rcheevos_locals.lboards = (rcheevos_lboard_t*) + calloc(rcheevos_locals.patchdata.lboard_count, sizeof(rcheevos_lboard_t)); - if ( !cheevos_locals.core - || !cheevos_locals.unofficial - || !cheevos_locals.lboards) + if ( !rcheevos_locals.core + || !rcheevos_locals.unofficial + || !rcheevos_locals.lboards) { - CHEEVOS_ERR(CHEEVOS_TAG "Error allocating memory for cheevos"); + CHEEVOS_ERR(RCHEEVOS_TAG "Error allocating memory for cheevos"); goto error; } @@ -332,15 +332,15 @@ static int cheevos_parse(const char* json) { if (i == 0) { - cheevo = cheevos_locals.core; - rac = cheevos_locals.patchdata.core; - count = cheevos_locals.patchdata.core_count; + cheevo = rcheevos_locals.core; + rac = rcheevos_locals.patchdata.core; + count = rcheevos_locals.patchdata.core_count; } else { - cheevo = cheevos_locals.unofficial; - rac = cheevos_locals.patchdata.unofficial; - count = cheevos_locals.patchdata.unofficial_count; + cheevo = rcheevos_locals.unofficial; + rac = rcheevos_locals.patchdata.unofficial; + count = rcheevos_locals.patchdata.unofficial_count; } for (j = 0; j < count; j++, cheevo++, rac++) @@ -350,8 +350,8 @@ static int cheevos_parse(const char* json) if (res < 0) { - CHEEVOS_ERR(CHEEVOS_TAG "Error in cheevo memaddr %s: %s", - cheevo->info->memaddr, cheevos_rc_error(res)); + CHEEVOS_ERR(RCHEEVOS_TAG "Error in cheevo memaddr %s: %s", + cheevo->info->memaddr, rcheevos_rc_error(res)); goto error; } @@ -359,7 +359,7 @@ static int cheevos_parse(const char* json) if (!cheevo->trigger) { - CHEEVOS_ERR(CHEEVOS_TAG "Error allocating memory for cheevos"); + CHEEVOS_ERR(RCHEEVOS_TAG "Error allocating memory for cheevos"); goto error; } @@ -369,18 +369,18 @@ static int cheevos_parse(const char* json) } } - lboard = cheevos_locals.lboards; - count = cheevos_locals.patchdata.lboard_count; + lboard = rcheevos_locals.lboards; + count = rcheevos_locals.patchdata.lboard_count; for (j = 0; j < count; j++, lboard++) { - lboard->info = cheevos_locals.patchdata.lboards + j; + lboard->info = rcheevos_locals.patchdata.lboards + j; res = rc_lboard_size(lboard->info->mem); if (res < 0) { - CHEEVOS_ERR(CHEEVOS_TAG "Error in leaderboard mem %s: %s", - lboard->info->mem, cheevos_rc_error(res)); + CHEEVOS_ERR(RCHEEVOS_TAG "Error in leaderboard mem %s: %s", + lboard->info->mem, rcheevos_rc_error(res)); goto error; } @@ -388,7 +388,7 @@ static int cheevos_parse(const char* json) if (!lboard->lboard) { - CHEEVOS_ERR(CHEEVOS_TAG "Error allocating memory for cheevos"); + CHEEVOS_ERR(RCHEEVOS_TAG "Error allocating memory for cheevos"); goto error; } @@ -402,11 +402,11 @@ static int cheevos_parse(const char* json) return 0; error: - CHEEVOS_FREE(cheevos_locals.core); - CHEEVOS_FREE(cheevos_locals.unofficial); - CHEEVOS_FREE(cheevos_locals.lboards); - cheevos_free_patchdata(&cheevos_locals.patchdata); - rcheevos_fixup_destroy(&cheevos_locals.fixups); + CHEEVOS_FREE(rcheevos_locals.core); + CHEEVOS_FREE(rcheevos_locals.unofficial); + CHEEVOS_FREE(rcheevos_locals.lboards); + rcheevos_free_patchdata(&rcheevos_locals.patchdata); + rcheevos_fixup_destroy(&rcheevos_locals.fixups); return -1; } @@ -414,75 +414,75 @@ error: Test all the achievements (call once per frame). *****************************************************************************/ -static void cheevos_award_task_softcore(retro_task_t *task, void* task_data, void* user_data, +static void rcheevos_award_task_softcore(retro_task_t *task, void* task_data, void* user_data, const char* error) { settings_t *settings = config_get_ptr(); - const cheevos_cheevo_t* cheevo = (const cheevos_cheevo_t*)user_data; + const rcheevos_cheevo_t* cheevo = (const rcheevos_cheevo_t*)user_data; char buffer[256]; int ret; buffer[0] = 0; if (error == NULL) { - CHEEVOS_LOG(CHEEVOS_TAG "Awarded achievement %u\n", cheevo->info->id); + CHEEVOS_LOG(RCHEEVOS_TAG "Awarded achievement %u\n", cheevo->info->id); return; } if (*error) - CHEEVOS_ERR(CHEEVOS_TAG "Error awarding achievement %u: %s\n", cheevo->info->id, error); + CHEEVOS_ERR(RCHEEVOS_TAG "Error awarding achievement %u: %s\n", cheevo->info->id, error); /* Try again. */ - ret = rc_url_award_cheevo(buffer, sizeof(buffer), settings->arrays.cheevos_username, cheevos_locals.token, cheevo->info->id, 0); + ret = rc_url_award_cheevo(buffer, sizeof(buffer), settings->arrays.cheevos_username, rcheevos_locals.token, cheevo->info->id, 0); if (ret != 0) { - CHEEVOS_ERR(CHEEVOS_TAG "Buffer to small to create URL"); + CHEEVOS_ERR(RCHEEVOS_TAG "Buffer to small to create URL"); return; } - cheevos_log_url(CHEEVOS_TAG "rc_url_award_cheevo: %s\n", buffer); - task_push_http_transfer(buffer, true, NULL, cheevos_award_task_softcore, user_data); + rcheevos_log_url(RCHEEVOS_TAG "rc_url_award_cheevo: %s\n", buffer); + task_push_http_transfer(buffer, true, NULL, rcheevos_award_task_softcore, user_data); } -static void cheevos_award_task_hardcore(retro_task_t *task, void* task_data, void* user_data, +static void rcheevos_award_task_hardcore(retro_task_t *task, void* task_data, void* user_data, const char* error) { settings_t *settings = config_get_ptr(); - const cheevos_cheevo_t* cheevo = (const cheevos_cheevo_t*)user_data; + const rcheevos_cheevo_t* cheevo = (const rcheevos_cheevo_t*)user_data; char buffer[256]; int ret; buffer[0] = 0; if (error == NULL) { - CHEEVOS_LOG(CHEEVOS_TAG "Awarded achievement %u\n", cheevo->info->id); + CHEEVOS_LOG(RCHEEVOS_TAG "Awarded achievement %u\n", cheevo->info->id); return; } if (*error) - CHEEVOS_ERR(CHEEVOS_TAG "Error awarding achievement %u: %s\n", cheevo->info->id, error); + CHEEVOS_ERR(RCHEEVOS_TAG "Error awarding achievement %u: %s\n", cheevo->info->id, error); /* Try again. */ - ret = rc_url_award_cheevo(buffer, sizeof(buffer), settings->arrays.cheevos_username, cheevos_locals.token, cheevo->info->id, 1); + ret = rc_url_award_cheevo(buffer, sizeof(buffer), settings->arrays.cheevos_username, rcheevos_locals.token, cheevo->info->id, 1); if (ret != 0) { - CHEEVOS_ERR(CHEEVOS_TAG "Buffer to small to create URL\n"); + CHEEVOS_ERR(RCHEEVOS_TAG "Buffer to small to create URL\n"); return; } - cheevos_log_url(CHEEVOS_TAG "rc_url_award_cheevo: %s\n", buffer); - task_push_http_transfer(buffer, true, NULL, cheevos_award_task_hardcore, user_data); + rcheevos_log_url(RCHEEVOS_TAG "rc_url_award_cheevo: %s\n", buffer); + task_push_http_transfer(buffer, true, NULL, rcheevos_award_task_hardcore, user_data); } -static void cheevos_award(cheevos_cheevo_t* cheevo, int mode) +static void rcheevos_award(rcheevos_cheevo_t* cheevo, int mode) { settings_t *settings = config_get_ptr(); char buffer[256]; buffer[0] = 0; - CHEEVOS_LOG(CHEEVOS_TAG "awarding cheevo %u: %s (%s)\n", + CHEEVOS_LOG(RCHEEVOS_TAG "awarding cheevo %u: %s (%s)\n", cheevo->info->id, cheevo->info->title, cheevo->info->description); /* Deactivates the cheevo. */ @@ -498,9 +498,9 @@ static void cheevos_award(cheevos_cheevo_t* cheevo, int mode) /* Start the award task. */ if ((mode & RCHEEVOS_ACTIVE_HARDCORE) != 0) - cheevos_award_task_hardcore(NULL, NULL, cheevo, ""); + rcheevos_award_task_hardcore(NULL, NULL, cheevo, ""); else - cheevos_award_task_softcore(NULL, NULL, cheevo, ""); + rcheevos_award_task_softcore(NULL, NULL, cheevo, ""); /* Take a screenshot of the achievement. */ if (settings && settings->bools.cheevos_auto_screenshot) @@ -515,16 +515,16 @@ static void cheevos_award(cheevos_cheevo_t* cheevo, int mode) if (take_screenshot(shotname, true, video_driver_cached_frame_has_valid_framebuffer(), false, true)) - CHEEVOS_LOG(CHEEVOS_TAG "got a screenshot for cheevo %u\n", cheevo->info->id); + CHEEVOS_LOG(RCHEEVOS_TAG "got a screenshot for cheevo %u\n", cheevo->info->id); else - CHEEVOS_LOG(CHEEVOS_TAG "failed to get screenshot for cheevo %u\n", cheevo->info->id); + CHEEVOS_LOG(RCHEEVOS_TAG "failed to get screenshot for cheevo %u\n", cheevo->info->id); } } -static unsigned cheevos_peek(unsigned address, unsigned num_bytes, void* ud) +static unsigned rcheevos_peek(unsigned address, unsigned num_bytes, void* ud) { - const uint8_t* data = rcheevos_fixup_find(&cheevos_locals.fixups, - address, cheevos_locals.patchdata.console_id); + const uint8_t* data = rcheevos_fixup_find(&rcheevos_locals.fixups, + address, rcheevos_locals.patchdata.console_id); unsigned value = 0; switch (num_bytes) @@ -537,11 +537,11 @@ static unsigned cheevos_peek(unsigned address, unsigned num_bytes, void* ud) return value; } -static void cheevos_test_cheevo_set(bool official) +static void rcheevos_test_cheevo_set(bool official) { settings_t *settings = config_get_ptr(); int mode = RCHEEVOS_ACTIVE_SOFTCORE; - cheevos_cheevo_t* cheevo; + rcheevos_cheevo_t* cheevo; int i, count; if (settings && settings->bools.cheevos_hardcore_mode_enable && !rcheevos_hardcore_paused) @@ -549,13 +549,13 @@ static void cheevos_test_cheevo_set(bool official) if (official) { - cheevo = cheevos_locals.core; - count = cheevos_locals.patchdata.core_count; + cheevo = rcheevos_locals.core; + count = rcheevos_locals.patchdata.core_count; } else { - cheevo = cheevos_locals.unofficial; - count = cheevos_locals.patchdata.unofficial_count; + cheevo = rcheevos_locals.unofficial; + count = rcheevos_locals.patchdata.unofficial_count; } for (i = 0; i < count; i++, cheevo++) @@ -566,23 +566,23 @@ static void cheevos_test_cheevo_set(bool official) if (cheevo->active & mode) { - int valid = rc_test_trigger(cheevo->trigger, cheevos_peek, NULL, NULL); + int valid = rc_test_trigger(cheevo->trigger, rcheevos_peek, NULL, NULL); if (cheevo->last) rc_reset_trigger(cheevo->trigger); else if (valid) - cheevos_award(cheevo, mode); + rcheevos_award(cheevo, mode); cheevo->last = valid; } } } -static void cheevos_lboard_submit_task(retro_task_t *task, void* task_data, void* user_data, +static void rcheevos_lboard_submit_task(retro_task_t *task, void* task_data, void* user_data, const char* error) { settings_t *settings = config_get_ptr(); - const cheevos_lboard_t* lboard = (const cheevos_lboard_t*)user_data; + const rcheevos_lboard_t* lboard = (const rcheevos_lboard_t*)user_data; MD5_CTX ctx; uint8_t hash[16]; char signature[64]; @@ -591,11 +591,11 @@ static void cheevos_lboard_submit_task(retro_task_t *task, void* task_data, void if (!error) { - CHEEVOS_LOG(CHEEVOS_TAG "Submitted leaderboard %u\n", lboard->info->id); + CHEEVOS_LOG(RCHEEVOS_TAG "Submitted leaderboard %u\n", lboard->info->id); return; } - CHEEVOS_ERR(CHEEVOS_TAG "Error submitting leaderboard %u: %s\n", lboard->info->id, error); + CHEEVOS_ERR(RCHEEVOS_TAG "Error submitting leaderboard %u: %s\n", lboard->info->id, error); /* Try again. */ @@ -609,19 +609,19 @@ static void cheevos_lboard_submit_task(retro_task_t *task, void* task_data, void MD5_Final(hash, &ctx); /* Start the request. */ - ret = rc_url_submit_lboard(buffer, sizeof(buffer), settings->arrays.cheevos_username, cheevos_locals.token, lboard->info->id, lboard->last_value, hash); + ret = rc_url_submit_lboard(buffer, sizeof(buffer), settings->arrays.cheevos_username, rcheevos_locals.token, lboard->info->id, lboard->last_value, hash); if (ret != 0) { - CHEEVOS_ERR(CHEEVOS_TAG "Buffer to small to create URL\n"); + CHEEVOS_ERR(RCHEEVOS_TAG "Buffer to small to create URL\n"); return; } - cheevos_log_url(CHEEVOS_TAG "rc_url_submit_lboard: %s\n", buffer); - task_push_http_transfer(buffer, true, NULL, cheevos_lboard_submit_task, user_data); + rcheevos_log_url(RCHEEVOS_TAG "rc_url_submit_lboard: %s\n", buffer); + task_push_http_transfer(buffer, true, NULL, rcheevos_lboard_submit_task, user_data); } -static void cheevos_lboard_submit(cheevos_lboard_t* lboard) +static void rcheevos_lboard_submit(rcheevos_lboard_t* lboard) { char buffer[256]; char value[16]; @@ -632,7 +632,7 @@ static void cheevos_lboard_submit(cheevos_lboard_t* lboard) /* Failsafe for improper leaderboards. */ if (lboard->last_value == 0) { - CHEEVOS_ERR(CHEEVOS_TAG "Leaderboard %s tried to submit 0\n", lboard->info->title); + CHEEVOS_ERR(RCHEEVOS_TAG "Leaderboard %s tried to submit 0\n", lboard->info->title); runloop_msg_queue_push("Leaderboard attempt cancelled!", 0, 2 * 60, false, NULL, MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO); return; } @@ -645,32 +645,32 @@ static void cheevos_lboard_submit(cheevos_lboard_t* lboard) runloop_msg_queue_push(buffer, 0, 2 * 60, false, NULL, MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO); /* Start the submit task. */ - cheevos_lboard_submit_task(NULL, NULL, lboard, "no error, first try"); + rcheevos_lboard_submit_task(NULL, NULL, lboard, "no error, first try"); } -static void cheevos_test_leaderboards(void) +static void rcheevos_test_leaderboards(void) { - cheevos_lboard_t* lboard = cheevos_locals.lboards; + rcheevos_lboard_t* lboard = rcheevos_locals.lboards; unsigned i; unsigned value; - for (i = 0; i < cheevos_locals.patchdata.lboard_count; i++, lboard++) + for (i = 0; i < rcheevos_locals.patchdata.lboard_count; i++, lboard++) { if (lboard->active) { - value = rc_evaluate_value(&lboard->lboard->value, cheevos_peek, NULL, NULL); + value = rc_evaluate_value(&lboard->lboard->value, rcheevos_peek, NULL, NULL); if (value != lboard->last_value) { lboard->last_value = value; } - if (rc_test_trigger(&lboard->lboard->submit, cheevos_peek, NULL, NULL)) - cheevos_lboard_submit(lboard); + if (rc_test_trigger(&lboard->lboard->submit, rcheevos_peek, NULL, NULL)) + rcheevos_lboard_submit(lboard); - if (rc_test_trigger(&lboard->lboard->cancel, cheevos_peek, NULL, NULL)) + if (rc_test_trigger(&lboard->lboard->cancel, rcheevos_peek, NULL, NULL)) { - CHEEVOS_LOG(CHEEVOS_TAG "Cancel leaderboard %s\n", lboard->info->title); + CHEEVOS_LOG(RCHEEVOS_TAG "Cancel leaderboard %s\n", lboard->info->title); lboard->active = 0; runloop_msg_queue_push("Leaderboard attempt cancelled!", 0, 2 * 60, false, NULL, MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO); @@ -678,11 +678,11 @@ static void cheevos_test_leaderboards(void) } else { - if (rc_test_trigger(&lboard->lboard->start, cheevos_peek, NULL, NULL)) + if (rc_test_trigger(&lboard->lboard->start, rcheevos_peek, NULL, NULL)) { char buffer[256]; - CHEEVOS_LOG(CHEEVOS_TAG "Leaderboard started: %s\n", lboard->info->title); + CHEEVOS_LOG(RCHEEVOS_TAG "Leaderboard started: %s\n", lboard->info->title); lboard->active = 1; lboard->last_value = 0; @@ -697,24 +697,24 @@ static void cheevos_test_leaderboards(void) void rcheevos_reset_game(void) { - cheevos_cheevo_t* cheevo; - cheevos_lboard_t* lboard; + rcheevos_cheevo_t* cheevo; + rcheevos_lboard_t* lboard; unsigned i; - cheevo = cheevos_locals.core; - for (i = 0; i < cheevos_locals.patchdata.core_count; i++, cheevo++) + cheevo = rcheevos_locals.core; + for (i = 0; i < rcheevos_locals.patchdata.core_count; i++, cheevo++) { cheevo->last = 1; } - cheevo = cheevos_locals.unofficial; - for (i = 0; i < cheevos_locals.patchdata.unofficial_count; i++, cheevo++) + cheevo = rcheevos_locals.unofficial; + for (i = 0; i < rcheevos_locals.patchdata.unofficial_count; i++, cheevo++) { cheevo->last = 1; } - lboard = cheevos_locals.lboards; - for (i = 0; i < cheevos_locals.patchdata.lboard_count; i++, lboard++) + lboard = rcheevos_locals.lboards; + for (i = 0; i < rcheevos_locals.patchdata.lboard_count; i++, lboard++) { lboard->active = 0; } @@ -727,7 +727,7 @@ void rcheevos_populate_menu(void* data) int count = 0; settings_t* settings = config_get_ptr(); menu_displaylist_info_t* info = (menu_displaylist_info_t*)data; - cheevos_cheevo_t* cheevo = NULL; + rcheevos_cheevo_t* cheevo = NULL; if ( settings->bools.cheevos_enable && settings->bools.cheevos_hardcore_mode_enable @@ -747,9 +747,9 @@ void rcheevos_populate_menu(void* data) MENU_SETTING_ACTION_RESUME_ACHIEVEMENTS, 0, 0); } - cheevo = cheevos_locals.core; + cheevo = rcheevos_locals.core; - for (i = 0, count = cheevos_locals.patchdata.core_count; i < count; i++, cheevo++) + for (i = 0, count = rcheevos_locals.patchdata.core_count; i < count; i++, cheevo++) { if (!(cheevo->active & RCHEEVOS_ACTIVE_HARDCORE)) { @@ -785,9 +785,9 @@ void rcheevos_populate_menu(void* data) if (settings->bools.cheevos_test_unofficial) { - cheevo = cheevos_locals.unofficial; + cheevo = rcheevos_locals.unofficial; - for (i = 0, count = cheevos_locals.patchdata.unofficial_count; i < count; i++, cheevo++) + for (i = 0, count = rcheevos_locals.patchdata.unofficial_count; i < count; i++, cheevo++) { if (!(cheevo->active & RCHEEVOS_ACTIVE_HARDCORE)) { @@ -822,10 +822,10 @@ void rcheevos_populate_menu(void* data) } } - count = cheevos_locals.patchdata.core_count; + count = rcheevos_locals.patchdata.core_count; if (settings->bools.cheevos_test_unofficial) - count += cheevos_locals.patchdata.unofficial_count; + count += rcheevos_locals.patchdata.unofficial_count; if (count == 0) { @@ -841,7 +841,7 @@ void rcheevos_populate_menu(void* data) bool rcheevos_get_description(rcheevos_ctx_desc_t* desc) { unsigned idx; - const cheevos_cheevo_t* cheevo; + const rcheevos_cheevo_t* cheevo; if (!desc) return false; @@ -852,14 +852,14 @@ bool rcheevos_get_description(rcheevos_ctx_desc_t* desc) { idx = desc->idx; - if (idx < cheevos_locals.patchdata.core_count) - cheevo = cheevos_locals.core + idx; + if (idx < rcheevos_locals.patchdata.core_count) + cheevo = rcheevos_locals.core + idx; else { - idx -= cheevos_locals.patchdata.core_count; + idx -= rcheevos_locals.patchdata.core_count; - if (idx < cheevos_locals.patchdata.unofficial_count) - cheevo = cheevos_locals.unofficial + idx; + if (idx < rcheevos_locals.patchdata.unofficial_count) + cheevo = rcheevos_locals.unofficial + idx; else return true; } @@ -883,21 +883,21 @@ bool rcheevos_unload(void) bool running = false; unsigned i = 0, count = 0; - CHEEVOS_LOCK(cheevos_locals.task_lock); - running = cheevos_locals.task != NULL; - CHEEVOS_UNLOCK(cheevos_locals.task_lock); + CHEEVOS_LOCK(rcheevos_locals.task_lock); + running = rcheevos_locals.task != NULL; + CHEEVOS_UNLOCK(rcheevos_locals.task_lock); if (running) { - CHEEVOS_LOG(CHEEVOS_TAG "Asked the load thread to terminate\n"); - task_queue_cancel_task(cheevos_locals.task); + CHEEVOS_LOG(RCHEEVOS_TAG "Asked the load thread to terminate\n"); + task_queue_cancel_task(rcheevos_locals.task); #ifdef HAVE_THREADS do { - CHEEVOS_LOCK(cheevos_locals.task_lock); - running = cheevos_locals.task != NULL; - CHEEVOS_UNLOCK(cheevos_locals.task_lock); + CHEEVOS_LOCK(rcheevos_locals.task_lock); + running = rcheevos_locals.task != NULL; + CHEEVOS_UNLOCK(rcheevos_locals.task_lock); } while (running); #endif @@ -905,30 +905,30 @@ bool rcheevos_unload(void) if (rcheevos_loaded) { - for (i = 0, count = cheevos_locals.patchdata.core_count; i < count; i++) + for (i = 0, count = rcheevos_locals.patchdata.core_count; i < count; i++) { - CHEEVOS_FREE(cheevos_locals.core[i].trigger); + CHEEVOS_FREE(rcheevos_locals.core[i].trigger); } - for (i = 0, count = cheevos_locals.patchdata.unofficial_count; i < count; i++) + for (i = 0, count = rcheevos_locals.patchdata.unofficial_count; i < count; i++) { - CHEEVOS_FREE(cheevos_locals.unofficial[i].trigger); + CHEEVOS_FREE(rcheevos_locals.unofficial[i].trigger); } - for (i = 0, count = cheevos_locals.patchdata.lboard_count; i < count; i++) + for (i = 0, count = rcheevos_locals.patchdata.lboard_count; i < count; i++) { - CHEEVOS_FREE(cheevos_locals.lboards[i].lboard); + CHEEVOS_FREE(rcheevos_locals.lboards[i].lboard); } - CHEEVOS_FREE(cheevos_locals.core); - CHEEVOS_FREE(cheevos_locals.unofficial); - CHEEVOS_FREE(cheevos_locals.lboards); - cheevos_free_patchdata(&cheevos_locals.patchdata); - rcheevos_fixup_destroy(&cheevos_locals.fixups); + CHEEVOS_FREE(rcheevos_locals.core); + CHEEVOS_FREE(rcheevos_locals.unofficial); + CHEEVOS_FREE(rcheevos_locals.lboards); + rcheevos_free_patchdata(&rcheevos_locals.patchdata); + rcheevos_fixup_destroy(&rcheevos_locals.fixups); - cheevos_locals.core = NULL; - cheevos_locals.unofficial = NULL; - cheevos_locals.lboards = NULL; + rcheevos_locals.core = NULL; + rcheevos_locals.unofficial = NULL; + rcheevos_locals.lboards = NULL; rcheevos_loaded = false; rcheevos_hardcore_paused = false; @@ -977,17 +977,17 @@ void rcheevos_test(void) { settings_t *settings = config_get_ptr(); - cheevos_test_cheevo_set(true); + rcheevos_test_cheevo_set(true); if (settings) { if (settings->bools.cheevos_test_unofficial) - cheevos_test_cheevo_set(false); + rcheevos_test_cheevo_set(false); if (settings->bools.cheevos_hardcore_mode_enable && settings->bools.cheevos_leaderboards_enable && !rcheevos_hardcore_paused) - cheevos_test_leaderboards(); + rcheevos_test_leaderboards(); } } @@ -999,22 +999,22 @@ bool rcheevos_set_cheats(void) void rcheevos_set_support_cheevos(bool state) { - cheevos_locals.core_supports = state; + rcheevos_locals.core_supports = state; } bool rcheevos_get_support_cheevos(void) { - return cheevos_locals.core_supports; + return rcheevos_locals.core_supports; } int rcheevos_get_console(void) { - return cheevos_locals.patchdata.console_id; + return rcheevos_locals.patchdata.console_id; } -static void cheevos_unlock_cb(unsigned id, void* userdata) +static void rcheevos_unlock_cb(unsigned id, void* userdata) { - cheevos_cheevo_t* cheevo = NULL; + rcheevos_cheevo_t* cheevo = NULL; int i = 0; unsigned j = 0, count = 0; @@ -1022,13 +1022,13 @@ static void cheevos_unlock_cb(unsigned id, void* userdata) { if (i == 0) { - cheevo = cheevos_locals.core; - count = cheevos_locals.patchdata.core_count; + cheevo = rcheevos_locals.core; + count = rcheevos_locals.patchdata.core_count; } else { - cheevo = cheevos_locals.unofficial; - count = cheevos_locals.patchdata.unofficial_count; + cheevo = rcheevos_locals.unofficial; + count = rcheevos_locals.patchdata.unofficial_count; } for (j = 0; j < count; j++, cheevo++) @@ -1038,7 +1038,7 @@ static void cheevos_unlock_cb(unsigned id, void* userdata) #ifndef CHEEVOS_DONT_DEACTIVATE cheevo->active &= ~*(unsigned*)userdata; #endif - CHEEVOS_LOG(CHEEVOS_TAG "cheevo %u deactivated: %s\n", id, cheevo->info->title); + CHEEVOS_LOG(RCHEEVOS_TAG "cheevo %u deactivated: %s\n", id, cheevo->info->title); return; } } @@ -1047,7 +1047,7 @@ static void cheevos_unlock_cb(unsigned id, void* userdata) #include "coro.h" -/* Uncomment the following two lines to debug cheevos_iterate, this will +/* Uncomment the following two lines to debug rcheevos_iterate, this will * disable the coroutine yielding. * * The code is very easy to understand. It's meant to be like BASIC: @@ -1081,7 +1081,7 @@ typedef struct size_t len; size_t size; MD5_CTX md5; - cheevos_nes_header_t header; + rcheevos_nes_header_t header; retro_time_t t0; struct retro_system_info sysinfo; void *data; @@ -1089,38 +1089,38 @@ typedef struct const char *path; const char *ext; intfstream_t *stream; - cheevos_cheevo_t *cheevo; + rcheevos_cheevo_t *cheevo; settings_t *settings; struct http_connection_t *conn; struct http_t *http; - const cheevos_cheevo_t *cheevo_end; + const rcheevos_cheevo_t *cheevo_end; /* co-routine required fields */ CORO_FIELDS -} coro_t; +} rcheevos_coro_t; enum { /* Negative values because CORO_SUB generates positive values */ - SNES_MD5 = -1, - GENESIS_MD5 = -2, - LYNX_MD5 = -3, - NES_MD5 = -4, - GENERIC_MD5 = -5, - FILENAME_MD5 = -6, - EVAL_MD5 = -7, - FILL_MD5 = -8, - GET_GAMEID = -9, - GET_CHEEVOS = -10, - GET_BADGES = -11, - LOGIN = -12, - HTTP_GET = -13, - DEACTIVATE = -14, - PLAYING = -15, - DELAY = -16 + RCHEEVOS_SNES_MD5 = -1, + RCHEEVOS_GENESIS_MD5 = -2, + RCHEEVOS_LYNX_MD5 = -3, + RCHEEVOS_NES_MD5 = -4, + RCHEEVOS_GENERIC_MD5 = -5, + RCHEEVOS_FILENAME_MD5 = -6, + RCHEEVOS_EVAL_MD5 = -7, + RCHEEVOS_FILL_MD5 = -8, + RCHEEVOS_GET_GAMEID = -9, + RCHEEVOS_GET_CHEEVOS = -10, + RCHEEVOS_GET_BADGES = -11, + RCHEEVOS_LOGIN = -12, + RCHEEVOS_HTTP_GET = -13, + RCHEEVOS_DEACTIVATE = -14, + RCHEEVOS_PLAYING = -15, + RCHEEVOS_DELAY = -16 }; -static int cheevos_iterate(coro_t* coro) +static int rcheevos_iterate(rcheevos_coro_t* coro) { const int snes_header_len = 0x200; const int lynx_header_len = 0x40; @@ -1163,14 +1163,14 @@ static int cheevos_iterate(coro_t* coro) 0 }; - static cheevos_finder_t finders[] = + static rcheevos_finder_t finders[] = { - {SNES_MD5, "SNES (discards header)", snes_exts}, - {GENESIS_MD5, "Genesis (6Mb padding)", genesis_exts}, - {LYNX_MD5, "Atari Lynx (discards header)", lynx_exts}, - {NES_MD5, "NES (discards header)", NULL}, - {GENERIC_MD5, "Generic (plain content)", NULL}, - {FILENAME_MD5, "Generic (filename)", NULL} + {RCHEEVOS_SNES_MD5, "SNES (discards header)", snes_exts}, + {RCHEEVOS_GENESIS_MD5, "Genesis (6Mb padding)", genesis_exts}, + {RCHEEVOS_LYNX_MD5, "Atari Lynx (discards header)", lynx_exts}, + {RCHEEVOS_NES_MD5, "NES (discards header)", NULL}, + {RCHEEVOS_GENERIC_MD5, "Generic (plain content)", NULL}, + {RCHEEVOS_FILENAME_MD5, "Generic (filename)", NULL} }; CORO_ENTER(); @@ -1256,12 +1256,12 @@ static int cheevos_iterate(coro_t* coro) if (end) { - hash = cheevos_djb2(coro->ext, end - coro->ext); + hash = rcheevos_djb2(coro->ext, end - coro->ext); coro->ext = end + 1; } else { - hash = cheevos_djb2(coro->ext, strlen(coro->ext)); + hash = rcheevos_djb2(coro->ext, strlen(coro->ext)); coro->ext = NULL; } @@ -1269,7 +1269,7 @@ static int cheevos_iterate(coro_t* coro) { if (finders[coro->i].ext_hashes[coro->j] == hash) { - CHEEVOS_LOG(CHEEVOS_TAG "testing %s\n", + CHEEVOS_LOG(RCHEEVOS_TAG "testing %s\n", finders[coro->i].name); /* @@ -1294,7 +1294,7 @@ static int cheevos_iterate(coro_t* coro) if (finders[coro->i].ext_hashes) continue; - CHEEVOS_LOG(CHEEVOS_TAG "testing %s\n", + CHEEVOS_LOG(RCHEEVOS_TAG "testing %s\n", finders[coro->i].name); /* @@ -1307,7 +1307,7 @@ static int cheevos_iterate(coro_t* coro) goto found; } - CHEEVOS_LOG(CHEEVOS_TAG "this game doesn't feature achievements\n"); + CHEEVOS_LOG(RCHEEVOS_TAG "this game doesn't feature achievements\n"); CORO_STOP(); found: @@ -1328,12 +1328,12 @@ found: coro->json[size] = 0; } #else - CORO_GOSUB(GET_CHEEVOS); + CORO_GOSUB(RCHEEVOS_GET_CHEEVOS); if (!coro->json) { runloop_msg_queue_push("Error loading achievements.", 0, 5 * 60, false, NULL, MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO); - CHEEVOS_ERR(CHEEVOS_TAG "error loading achievements\n"); + CHEEVOS_ERR(RCHEEVOS_TAG "error loading achievements\n"); CORO_STOP(); } #endif @@ -1345,7 +1345,7 @@ found: fclose(file); } #endif - if (cheevos_parse(coro->json)) + if (rcheevos_parse(coro->json)) { CHEEVOS_FREE(coro->json); CORO_STOP(); @@ -1353,9 +1353,9 @@ found: CHEEVOS_FREE(coro->json); - if ( cheevos_locals.patchdata.core_count == 0 - && cheevos_locals.patchdata.unofficial_count == 0 - && cheevos_locals.patchdata.lboard_count == 0) + if ( rcheevos_locals.patchdata.core_count == 0 + && rcheevos_locals.patchdata.unofficial_count == 0 + && rcheevos_locals.patchdata.lboard_count == 0) { runloop_msg_queue_push( "This game has no achievements.", @@ -1370,21 +1370,21 @@ found: * Inputs: CHEEVOS_VAR_GAMEID * Outputs: */ - CORO_GOSUB(DEACTIVATE); + CORO_GOSUB(RCHEEVOS_DEACTIVATE); /* * Inputs: CHEEVOS_VAR_GAMEID * Outputs: */ - CORO_GOSUB(PLAYING); + CORO_GOSUB(RCHEEVOS_PLAYING); - if (coro->settings->bools.cheevos_verbose_enable && cheevos_locals.patchdata.core_count > 0) + if (coro->settings->bools.cheevos_verbose_enable && rcheevos_locals.patchdata.core_count > 0) { char msg[256]; int mode = RCHEEVOS_ACTIVE_SOFTCORE; - const cheevos_cheevo_t* cheevo = cheevos_locals.core; - const cheevos_cheevo_t* end = cheevo + cheevos_locals.patchdata.core_count; - int number_of_unlocked = cheevos_locals.patchdata.core_count; + const rcheevos_cheevo_t* cheevo = rcheevos_locals.core; + const rcheevos_cheevo_t* end = cheevo + rcheevos_locals.patchdata.core_count; + int number_of_unlocked = rcheevos_locals.patchdata.core_count; if (coro->settings->bools.cheevos_hardcore_mode_enable && !rcheevos_hardcore_paused) mode = RCHEEVOS_ACTIVE_HARDCORE; @@ -1395,12 +1395,12 @@ found: snprintf(msg, sizeof(msg), "You have %d of %d achievements unlocked.", - number_of_unlocked, cheevos_locals.patchdata.core_count); + number_of_unlocked, rcheevos_locals.patchdata.core_count); msg[sizeof(msg) - 1] = 0; runloop_msg_queue_push(msg, 0, 6 * 60, false, NULL, MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO); } - CORO_GOSUB(GET_BADGES); + CORO_GOSUB(RCHEEVOS_GET_BADGES); CORO_STOP(); /************************************************************************** @@ -1408,11 +1408,11 @@ found: * Input CHEEVOS_VAR_INFO the content info * Output CHEEVOS_VAR_GAMEID the Retro Achievements game ID, or 0 if not found *************************************************************************/ - CORO_SUB(SNES_MD5) + CORO_SUB(RCHEEVOS_SNES_MD5) MD5_Init(&coro->md5); /* Checks for the existence of a headered SNES file. - Unheadered files fall back to GENERIC_MD5. */ + Unheadered files fall back to RCHEEVOS_GENERIC_MD5. */ if (coro->len < 0x2000 || coro->len % 0x2000 != snes_header_len) { coro->gameid = 0; @@ -1422,23 +1422,23 @@ found: coro->offset = snes_header_len; coro->count = 0; - CORO_GOSUB(EVAL_MD5); + CORO_GOSUB(RCHEEVOS_EVAL_MD5); MD5_Final(coro->hash, &coro->md5); - CORO_GOTO(GET_GAMEID); + CORO_GOTO(RCHEEVOS_GET_GAMEID); /************************************************************************** * Info Tries to identify a Genesis game * Input CHEEVOS_VAR_INFO the content info * Output CHEEVOS_VAR_GAMEID the Retro Achievements game ID, or 0 if not found *************************************************************************/ - CORO_SUB(GENESIS_MD5) + CORO_SUB(RCHEEVOS_GENESIS_MD5) MD5_Init(&coro->md5); coro->offset = 0; coro->count = 0; - CORO_GOSUB(EVAL_MD5); + CORO_GOSUB(RCHEEVOS_EVAL_MD5); if (coro->count == 0) { @@ -1451,21 +1451,21 @@ found: { coro->offset = 0; coro->count = CHEEVOS_MB(6) - coro->count; - CORO_GOSUB(FILL_MD5); + CORO_GOSUB(RCHEEVOS_FILL_MD5); } MD5_Final(coro->hash, &coro->md5); - CORO_GOTO(GET_GAMEID); + CORO_GOTO(RCHEEVOS_GET_GAMEID); /************************************************************************** * Info Tries to identify an Atari Lynx game * Input CHEEVOS_VAR_INFO the content info * Output CHEEVOS_VAR_GAMEID the Retro Achievements game ID, or 0 if not found *************************************************************************/ - CORO_SUB(LYNX_MD5) + CORO_SUB(RCHEEVOS_LYNX_MD5) /* Checks for the existence of a headered Lynx file. - Unheadered files fall back to GENERIC_MD5. */ + Unheadered files fall back to RCHEEVOS_GENERIC_MD5. */ if (coro->len <= lynx_header_len || memcmp("LYNX", (void *)coro->data, 5) != 0) { @@ -1476,20 +1476,20 @@ found: MD5_Init(&coro->md5); coro->offset = lynx_header_len; coro->count = coro->len - lynx_header_len; - CORO_GOSUB(EVAL_MD5); + CORO_GOSUB(RCHEEVOS_EVAL_MD5); MD5_Final(coro->hash, &coro->md5); - CORO_GOTO(GET_GAMEID); + CORO_GOTO(RCHEEVOS_GET_GAMEID); /************************************************************************** * Info Tries to identify a NES game * Input CHEEVOS_VAR_INFO the content info * Output CHEEVOS_VAR_GAMEID the Retro Achievements game ID, or 0 if not found *************************************************************************/ - CORO_SUB(NES_MD5) + CORO_SUB(RCHEEVOS_NES_MD5) /* Checks for the existence of a headered NES file. - Unheadered files fall back to GENERIC_MD5. */ + Unheadered files fall back to RCHEEVOS_GENERIC_MD5. */ if (coro->len < sizeof(coro->header)) { coro->gameid = 0; @@ -1511,37 +1511,37 @@ found: MD5_Init(&coro->md5); coro->offset = sizeof(coro->header); coro->count = coro->len - coro->offset; - CORO_GOSUB(EVAL_MD5); + CORO_GOSUB(RCHEEVOS_EVAL_MD5); MD5_Final(coro->hash, &coro->md5); - CORO_GOTO(GET_GAMEID); + CORO_GOTO(RCHEEVOS_GET_GAMEID); /************************************************************************** * Info Tries to identify a "generic" game * Input CHEEVOS_VAR_INFO the content info * Output CHEEVOS_VAR_GAMEID the Retro Achievements game ID, or 0 if not found *************************************************************************/ - CORO_SUB(GENERIC_MD5) + CORO_SUB(RCHEEVOS_GENERIC_MD5) MD5_Init(&coro->md5); coro->offset = 0; coro->count = 0; - CORO_GOSUB(EVAL_MD5); + CORO_GOSUB(RCHEEVOS_EVAL_MD5); MD5_Final(coro->hash, &coro->md5); if (coro->count == 0) CORO_RET(); - CORO_GOTO(GET_GAMEID); + CORO_GOTO(RCHEEVOS_GET_GAMEID); /************************************************************************** * Info Tries to identify a game based on its filename (with no extension) * Input CHEEVOS_VAR_INFO the content info * Output CHEEVOS_VAR_GAMEID the Retro Achievements game ID, or 0 if not found *************************************************************************/ - CORO_SUB(FILENAME_MD5) + CORO_SUB(RCHEEVOS_FILENAME_MD5) if (!string_is_empty(coro->path)) { char base_noext[PATH_MAX_LENGTH]; @@ -1551,7 +1551,7 @@ found: MD5_Update(&coro->md5, (void*)base_noext, strlen(base_noext)); MD5_Final(coro->hash, &coro->md5); - CORO_GOTO(GET_GAMEID); + CORO_GOTO(RCHEEVOS_GET_GAMEID); } CORO_RET(); @@ -1560,7 +1560,7 @@ found: * Inputs CHEEVOS_VAR_INFO, CHEEVOS_VAR_OFFSET, CHEEVOS_VAR_COUNT * Outputs CHEEVOS_VAR_MD5, CHEEVOS_VAR_COUNT *************************************************************************/ - CORO_SUB(EVAL_MD5) + CORO_SUB(RCHEEVOS_EVAL_MD5) if (coro->count == 0) coro->count = coro->len; @@ -1582,7 +1582,7 @@ found: * Inputs CHEEVOS_VAR_OFFSET, CHEEVOS_VAR_COUNT * Outputs CHEEVOS_VAR_MD5 *************************************************************************/ - CORO_SUB(FILL_MD5) + CORO_SUB(RCHEEVOS_FILL_MD5) { char buffer[4096]; @@ -1607,19 +1607,19 @@ found: * Inputs coro->hash * Outputs CHEEVOS_VAR_GAMEID *************************************************************************/ - CORO_SUB(GET_GAMEID) + CORO_SUB(RCHEEVOS_GET_GAMEID) { int size = rc_url_get_gameid(coro->url, sizeof(coro->url), coro->hash); if (size < 0) { - CHEEVOS_ERR(CHEEVOS_TAG "buffer too small to create URL\n"); + CHEEVOS_ERR(RCHEEVOS_TAG "buffer too small to create URL\n"); CORO_RET(); } - cheevos_log_url(CHEEVOS_TAG "rc_url_get_gameid: %s\n", coro->url); - CORO_GOSUB(HTTP_GET); + rcheevos_log_url(RCHEEVOS_TAG "rc_url_get_gameid: %s\n", coro->url); + CORO_GOSUB(RCHEEVOS_HTTP_GET); if (!coro->json) CORO_RET(); @@ -1627,7 +1627,7 @@ found: coro->gameid = chevos_get_gameid(coro->json); CHEEVOS_FREE(coro->json); - CHEEVOS_LOG(CHEEVOS_TAG "got game id %u\n", coro->gameid); + CHEEVOS_LOG(RCHEEVOS_TAG "got game id %u\n", coro->gameid); CORO_RET(); } @@ -1636,30 +1636,30 @@ found: * Inputs CHEEVOS_VAR_GAMEID * Outputs CHEEVOS_VAR_JSON *************************************************************************/ - CORO_SUB(GET_CHEEVOS) + CORO_SUB(RCHEEVOS_GET_CHEEVOS) { int ret; - CORO_GOSUB(LOGIN); + CORO_GOSUB(RCHEEVOS_LOGIN); - ret = rc_url_get_patch(coro->url, sizeof(coro->url), coro->settings->arrays.cheevos_username, cheevos_locals.token, coro->gameid); + ret = rc_url_get_patch(coro->url, sizeof(coro->url), coro->settings->arrays.cheevos_username, rcheevos_locals.token, coro->gameid); if (ret < 0) { - CHEEVOS_ERR(CHEEVOS_TAG "buffer too small to create URL\n"); + CHEEVOS_ERR(RCHEEVOS_TAG "buffer too small to create URL\n"); CORO_STOP(); } - cheevos_log_url(CHEEVOS_TAG "rc_url_get_patch: %s\n", coro->url); - CORO_GOSUB(HTTP_GET); + rcheevos_log_url(RCHEEVOS_TAG "rc_url_get_patch: %s\n", coro->url); + CORO_GOSUB(RCHEEVOS_HTTP_GET); if (!coro->json) { - CHEEVOS_ERR(CHEEVOS_TAG "error getting achievements for game id %u\n", coro->gameid); + CHEEVOS_ERR(RCHEEVOS_TAG "error getting achievements for game id %u\n", coro->gameid); CORO_STOP(); } - CHEEVOS_LOG(CHEEVOS_TAG "got achievements for game id %u\n", coro->gameid); + CHEEVOS_LOG(RCHEEVOS_TAG "got achievements for game id %u\n", coro->gameid); CORO_RET(); } @@ -1668,7 +1668,7 @@ found: * Inputs CHEEVOS_VAR_GAMEID * Outputs CHEEVOS_VAR_JSON *************************************************************************/ - CORO_SUB(GET_BADGES) + CORO_SUB(RCHEEVOS_GET_BADGES) badges_ctx = new_badges_ctx; @@ -1686,13 +1686,13 @@ found: { if (coro->i == 0) { - coro->cheevo = cheevos_locals.core; - coro->cheevo_end = coro->cheevo + cheevos_locals.patchdata.core_count; + coro->cheevo = rcheevos_locals.core; + coro->cheevo_end = coro->cheevo + rcheevos_locals.patchdata.core_count; } else { - coro->cheevo = cheevos_locals.unofficial; - coro->cheevo_end = coro->cheevo + cheevos_locals.patchdata.unofficial_count; + coro->cheevo = rcheevos_locals.unofficial; + coro->cheevo_end = coro->cheevo + rcheevos_locals.patchdata.unofficial_count; } for (; coro->cheevo < coro->cheevo_end; coro->cheevo++) @@ -1727,7 +1727,7 @@ found: { #ifdef CHEEVOS_LOG_BADGES CHEEVOS_LOG( - CHEEVOS_TAG "downloading badge %s\n", + RCHEEVOS_TAG "downloading badge %s\n", coro->badge_fullpath); #endif snprintf(coro->url, @@ -1735,13 +1735,13 @@ found: "http://i.retroachievements.org/Badge/%s", coro->badge_name); - CORO_GOSUB(HTTP_GET); + CORO_GOSUB(RCHEEVOS_HTTP_GET); if (coro->json) { if (!filestream_write_file(coro->badge_fullpath, coro->json, coro->k)) - CHEEVOS_ERR(CHEEVOS_TAG "error writing badge %s\n", coro->badge_fullpath); + CHEEVOS_ERR(RCHEEVOS_TAG "error writing badge %s\n", coro->badge_fullpath); else CHEEVOS_FREE(coro->json); } @@ -1755,7 +1755,7 @@ found: /************************************************************************** * Info Logs in the user at Retro Achievements *************************************************************************/ - CORO_SUB(LOGIN) + CORO_SUB(RCHEEVOS_LOGIN) { const char* username = coro->settings->arrays.cheevos_username; const char* password = coro->settings->arrays.cheevos_password; @@ -1763,7 +1763,7 @@ found: int ret; char tok[256]; - if (cheevos_locals.token[0]) + if (rcheevos_locals.token[0]) CORO_RET(); if (string_is_empty(username)) @@ -1774,7 +1774,7 @@ found: runloop_msg_queue_push( "Please fill in your account information in Settings.", 0, 5 * 60, false, NULL, MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO); - CHEEVOS_ERR(CHEEVOS_TAG "login info not informed\n"); + CHEEVOS_ERR(RCHEEVOS_TAG "login info not informed\n"); CORO_STOP(); } @@ -1787,22 +1787,22 @@ found: if (ret < 0) { - CHEEVOS_ERR(CHEEVOS_TAG "buffer too small to create URL\n"); + CHEEVOS_ERR(RCHEEVOS_TAG "buffer too small to create URL\n"); CORO_STOP(); } - cheevos_log_url(CHEEVOS_TAG "rc_url_login_with_password: %s\n", coro->url); - CORO_GOSUB(HTTP_GET); + rcheevos_log_url(RCHEEVOS_TAG "rc_url_login_with_password: %s\n", coro->url); + CORO_GOSUB(RCHEEVOS_HTTP_GET); if (!coro->json) { runloop_msg_queue_push("RetroAchievements: Error contacting server.", 0, 5 * 60, false, NULL, MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO); - CHEEVOS_ERR(CHEEVOS_TAG "error getting user token\n"); + CHEEVOS_ERR(RCHEEVOS_TAG "error getting user token\n"); CORO_STOP(); } - ret = cheevos_get_token(coro->json, tok, sizeof(tok)); + ret = rcheevos_get_token(coro->json, tok, sizeof(tok)); if (ret != 0) { @@ -1829,8 +1829,8 @@ found: runloop_msg_queue_push(msg, 0, 3 * 60, false, NULL, MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO); } - strlcpy(cheevos_locals.token, tok, - sizeof(cheevos_locals.token)); + strlcpy(rcheevos_locals.token, tok, + sizeof(rcheevos_locals.token)); /* Save token to config and clear pass on success */ strlcpy(coro->settings->arrays.cheevos_token, tok, @@ -1843,7 +1843,7 @@ found: /************************************************************************** * Info Pauses execution for five seconds *************************************************************************/ - CORO_SUB(DELAY) + CORO_SUB(RCHEEVOS_DELAY) { retro_time_t t1; @@ -1863,12 +1863,12 @@ found: * Inputs CHEEVOS_VAR_URL * Outputs CHEEVOS_VAR_JSON *************************************************************************/ - CORO_SUB(HTTP_GET) + CORO_SUB(RCHEEVOS_HTTP_GET) for (coro->k = 0; coro->k < 5; coro->k++) { if (coro->k != 0) - CHEEVOS_LOG(CHEEVOS_TAG "Retrying HTTP request: %u of 5\n", coro->k + 1); + CHEEVOS_LOG(RCHEEVOS_TAG "Retrying HTTP request: %u of 5\n", coro->k + 1); coro->json = NULL; coro->conn = net_http_connection_new( @@ -1876,7 +1876,7 @@ found: if (!coro->conn) { - CORO_GOSUB(DELAY); + CORO_GOSUB(RCHEEVOS_DELAY); continue; } @@ -1896,7 +1896,7 @@ found: if (!coro->http) { net_http_connection_free(coro->conn); - CORO_GOSUB(DELAY); + CORO_GOSUB(RCHEEVOS_DELAY); continue; } @@ -1930,7 +1930,7 @@ found: net_http_connection_free(coro->conn); } - CHEEVOS_LOG(CHEEVOS_TAG "Couldn't connect to server after 5 tries\n"); + CHEEVOS_LOG(RCHEEVOS_TAG "Couldn't connect to server after 5 tries\n"); CORO_RET(); /************************************************************************** @@ -1938,34 +1938,34 @@ found: * Inputs CHEEVOS_VAR_GAMEID * Outputs *************************************************************************/ - CORO_SUB(DEACTIVATE) + CORO_SUB(RCHEEVOS_DEACTIVATE) - CORO_GOSUB(LOGIN); + CORO_GOSUB(RCHEEVOS_LOGIN); { int ret; unsigned mode; for (coro->i = 0; coro->i < 2; coro->i++) { - ret = rc_url_get_unlock_list(coro->url, sizeof(coro->url), coro->settings->arrays.cheevos_username, cheevos_locals.token, coro->gameid, coro->i); + ret = rc_url_get_unlock_list(coro->url, sizeof(coro->url), coro->settings->arrays.cheevos_username, rcheevos_locals.token, coro->gameid, coro->i); if (ret < 0) { - CHEEVOS_ERR(CHEEVOS_TAG "buffer too small to create URL\n"); + CHEEVOS_ERR(RCHEEVOS_TAG "buffer too small to create URL\n"); CORO_STOP(); } - cheevos_log_url(CHEEVOS_TAG "rc_url_get_unlock_list: %s\n", coro->url); - CORO_GOSUB(HTTP_GET); + rcheevos_log_url(RCHEEVOS_TAG "rc_url_get_unlock_list: %s\n", coro->url); + CORO_GOSUB(RCHEEVOS_HTTP_GET); if (coro->json) { mode = coro->i == 0 ? RCHEEVOS_ACTIVE_SOFTCORE : RCHEEVOS_ACTIVE_HARDCORE; - cheevos_deactivate_unlocks(coro->json, cheevos_unlock_cb, &mode); + rcheevos_deactivate_unlocks(coro->json, rcheevos_unlock_cb, &mode); CHEEVOS_FREE(coro->json); } else - CHEEVOS_ERR(CHEEVOS_TAG "error retrieving list of unlocked achievements in softcore mode\n"); + CHEEVOS_ERR(RCHEEVOS_TAG "error retrieving list of unlocked achievements in softcore mode\n"); } } @@ -1976,56 +1976,56 @@ found: * Inputs CHEEVOS_VAR_GAMEID * Outputs *************************************************************************/ - CORO_SUB(PLAYING) + CORO_SUB(RCHEEVOS_PLAYING) snprintf( coro->url, sizeof(coro->url), "http://retroachievements.org/dorequest.php?r=postactivity&u=%s&t=%s&a=3&m=%u", coro->settings->arrays.cheevos_username, - cheevos_locals.token, coro->gameid + rcheevos_locals.token, coro->gameid ); coro->url[sizeof(coro->url) - 1] = 0; - cheevos_log_url(CHEEVOS_TAG "url to post the 'playing' activity: %s\n", coro->url); + rcheevos_log_url(RCHEEVOS_TAG "url to post the 'playing' activity: %s\n", coro->url); - CORO_GOSUB(HTTP_GET); + CORO_GOSUB(RCHEEVOS_HTTP_GET); if (coro->json) { - CHEEVOS_LOG(CHEEVOS_TAG "posted playing activity\n"); + CHEEVOS_LOG(RCHEEVOS_TAG "posted playing activity\n"); CHEEVOS_FREE(coro->json); } else - CHEEVOS_ERR(CHEEVOS_TAG "error posting playing activity\n"); + CHEEVOS_ERR(RCHEEVOS_TAG "error posting playing activity\n"); - CHEEVOS_LOG(CHEEVOS_TAG "posted playing activity\n"); + CHEEVOS_LOG(RCHEEVOS_TAG "posted playing activity\n"); CORO_RET(); CORO_LEAVE(); } -static void cheevos_task_handler(retro_task_t *task) +static void rcheevos_task_handler(retro_task_t *task) { - coro_t *coro = (coro_t*)task->state; + rcheevos_coro_t *coro = (rcheevos_coro_t*)task->state; if (!coro) return; - if (!cheevos_iterate(coro) || task_get_cancelled(task)) + if (!rcheevos_iterate(coro) || task_get_cancelled(task)) { task_set_finished(task, true); - CHEEVOS_LOCK(cheevos_locals.task_lock); - cheevos_locals.task = NULL; - CHEEVOS_UNLOCK(cheevos_locals.task_lock); + CHEEVOS_LOCK(rcheevos_locals.task_lock); + rcheevos_locals.task = NULL; + CHEEVOS_UNLOCK(rcheevos_locals.task_lock); if (task_get_cancelled(task)) { - CHEEVOS_LOG(CHEEVOS_TAG "Load task cancelled\n"); + CHEEVOS_LOG(RCHEEVOS_TAG "Load task cancelled\n"); } else { - CHEEVOS_LOG(CHEEVOS_TAG "Load task finished\n"); + CHEEVOS_LOG(RCHEEVOS_TAG "Load task finished\n"); } CHEEVOS_FREE(coro->data); @@ -2038,15 +2038,15 @@ bool rcheevos_load(const void *data) { retro_task_t *task; const struct retro_game_info *info = NULL; - coro_t *coro = NULL; + rcheevos_coro_t *coro = NULL; rcheevos_loaded = false; rcheevos_hardcore_paused = false; - if (!cheevos_locals.core_supports || !data) + if (!rcheevos_locals.core_supports || !data) return false; - coro = (coro_t*)calloc(1, sizeof(*coro)); + coro = (rcheevos_coro_t*)calloc(1, sizeof(*coro)); if (!coro) return false; @@ -2089,7 +2089,7 @@ bool rcheevos_load(const void *data) coro->path = strdup(info->path); } - task->handler = cheevos_task_handler; + task->handler = rcheevos_task_handler; task->state = (void*)coro; task->mute = true; task->callback = NULL; @@ -2098,15 +2098,15 @@ bool rcheevos_load(const void *data) task->title = NULL; #ifdef HAVE_THREADS - if (cheevos_locals.task_lock == NULL) + if (rcheevos_locals.task_lock == NULL) { - cheevos_locals.task_lock = slock_new(); + rcheevos_locals.task_lock = slock_new(); } #endif - CHEEVOS_LOCK(cheevos_locals.task_lock); - cheevos_locals.task = task; - CHEEVOS_UNLOCK(cheevos_locals.task_lock); + CHEEVOS_LOCK(rcheevos_locals.task_lock); + rcheevos_locals.task = task; + CHEEVOS_UNLOCK(rcheevos_locals.task_lock); task_queue_push(task); diff --git a/cheevos-new/coro.h b/cheevos-new/coro.h index a9eb7a4c8b..e81e77e7c1 100644 --- a/cheevos-new/coro.h +++ b/cheevos-new/coro.h @@ -5,7 +5,7 @@ Released under the CC0: https://creativecommons.org/publicdomain/zero/1.0/ */ -/* Use at the beginning of the coroutine, you must have declared a variable coro_t* coro */ +/* Use at the beginning of the coroutine, you must have declared a variable rcheevos_coro_t* coro */ #define CORO_ENTER() \ { \ CORO_again: ; \ @@ -67,7 +67,7 @@ Released under the CC0: https://creativecommons.org/publicdomain/zero/1.0/ return 0; \ } while ( 0 ) -/* Add this macro to your coro_t structure containing the variables for the coroutine */ +/* Add this macro to your rcheevos_coro_t structure containing the variables for the coroutine */ #define CORO_FIELDS \ int step, sp; \ int stack[ 8 ]; diff --git a/cheevos-new/fixup.c b/cheevos-new/fixup.c index a81e90d1a1..12c52b822a 100644 --- a/cheevos-new/fixup.c +++ b/cheevos-new/fixup.c @@ -22,10 +22,10 @@ #include -static int cheevos_cmpaddr(const void* e1, const void* e2) +static int rcheevos_cmpaddr(const void* e1, const void* e2) { - const cheevos_fixup_t* f1 = (const cheevos_fixup_t*)e1; - const cheevos_fixup_t* f2 = (const cheevos_fixup_t*)e2; + const rcheevos_fixup_t* f1 = (const rcheevos_fixup_t*)e1; + const rcheevos_fixup_t* f2 = (const rcheevos_fixup_t*)e2; if (f1->address < f2->address) { @@ -41,7 +41,7 @@ static int cheevos_cmpaddr(const void* e1, const void* e2) } } -static size_t cheevos_var_reduce(size_t addr, size_t mask) +static size_t rcheevos_var_reduce(size_t addr, size_t mask) { while (mask) { @@ -53,7 +53,7 @@ static size_t cheevos_var_reduce(size_t addr, size_t mask) return addr; } -static size_t cheevos_var_highest_bit(size_t n) +static size_t rcheevos_var_highest_bit(size_t n) { n |= n >> 1; n |= n >> 2; @@ -64,33 +64,33 @@ static size_t cheevos_var_highest_bit(size_t n) return n ^ (n >> 1); } -void rcheevos_fixup_init(cheevos_fixups_t* fixups) +void rcheevos_fixup_init(rcheevos_fixups_t* fixups) { fixups->elements = NULL; fixups->capacity = fixups->count = 0; fixups->dirty = false; } -void rcheevos_fixup_destroy(cheevos_fixups_t* fixups) +void rcheevos_fixup_destroy(rcheevos_fixups_t* fixups) { CHEEVOS_FREE(fixups->elements); rcheevos_fixup_init(fixups); } -const uint8_t* rcheevos_fixup_find(cheevos_fixups_t* fixups, unsigned address, int console) +const uint8_t* rcheevos_fixup_find(rcheevos_fixups_t* fixups, unsigned address, int console) { - cheevos_fixup_t key; - cheevos_fixup_t* found; + rcheevos_fixup_t key; + rcheevos_fixup_t* found; const uint8_t* location; if (fixups->dirty) { - qsort(fixups->elements, fixups->count, sizeof(cheevos_fixup_t), cheevos_cmpaddr); + qsort(fixups->elements, fixups->count, sizeof(rcheevos_fixup_t), rcheevos_cmpaddr); fixups->dirty = false; } key.address = address; - found = (cheevos_fixup_t*)bsearch(&key, fixups->elements, fixups->count, sizeof(cheevos_fixup_t), cheevos_cmpaddr); + found = (rcheevos_fixup_t*)bsearch(&key, fixups->elements, fixups->count, sizeof(rcheevos_fixup_t), rcheevos_cmpaddr); if (found != NULL) { @@ -100,8 +100,8 @@ const uint8_t* rcheevos_fixup_find(cheevos_fixups_t* fixups, unsigned address, i if (fixups->count == fixups->capacity) { unsigned new_capacity = fixups->capacity == 0 ? 16 : fixups->capacity * 2; - cheevos_fixup_t* new_elements = (cheevos_fixup_t*) - realloc(fixups->elements, new_capacity * sizeof(cheevos_fixup_t)); + rcheevos_fixup_t* new_elements = (rcheevos_fixup_t*) + realloc(fixups->elements, new_capacity * sizeof(rcheevos_fixup_t)); if (new_elements == NULL) { @@ -130,7 +130,7 @@ const uint8_t* rcheevos_patch_address(unsigned address, int console) if (address >= 0x0800 && address < 0x2000) { /* Address in the mirrorred RAM, adjust to real RAM. */ - CHEEVOS_LOG(CHEEVOS_TAG "NES memory address in mirrorred RAM %X, adjusted to %X\n", address, address & 0x07ff); + CHEEVOS_LOG(RCHEEVOS_TAG "NES memory address in mirrorred RAM %X, adjusted to %X\n", address, address & 0x07ff); address &= 0x07ff; } } @@ -139,7 +139,7 @@ const uint8_t* rcheevos_patch_address(unsigned address, int console) if (address >= 0xe000 && address <= 0xfdff) { /* Address in the echo RAM, adjust to real RAM. */ - CHEEVOS_LOG(CHEEVOS_TAG "GBC memory address in echo RAM %X, adjusted to %X\n", address, address - 0x2000); + CHEEVOS_LOG(RCHEEVOS_TAG "GBC memory address in echo RAM %X, adjusted to %X\n", address, address - 0x2000); address -= 0x2000; } } @@ -156,20 +156,20 @@ const uint8_t* rcheevos_patch_address(unsigned address, int console) if (address < 0x8000) { /* Internal RAM. */ - CHEEVOS_LOG(CHEEVOS_TAG "GBA memory address %X adjusted to %X\n", address, address + 0x3000000); + CHEEVOS_LOG(RCHEEVOS_TAG "GBA memory address %X adjusted to %X\n", address, address + 0x3000000); address += 0x3000000; } else { /* Work RAM. */ - CHEEVOS_LOG(CHEEVOS_TAG "GBA memory address %X adjusted to %X\n", address, address + 0x2000000 - 0x8000); + CHEEVOS_LOG(RCHEEVOS_TAG "GBA memory address %X adjusted to %X\n", address, address + 0x2000000 - 0x8000); address += 0x2000000 - 0x8000; } } else if (console == RC_CONSOLE_PC_ENGINE) { /* RAM. */ - CHEEVOS_LOG(CHEEVOS_TAG "PCE memory address %X adjusted to %X\n", address, address + 0x1f0000); + CHEEVOS_LOG(RCHEEVOS_TAG "PCE memory address %X adjusted to %X\n", address, address + 0x1f0000); address += 0x1f0000; } else if (console == RC_CONSOLE_SUPER_NINTENDO) @@ -177,13 +177,13 @@ const uint8_t* rcheevos_patch_address(unsigned address, int console) if (address < 0x020000) { /* Work RAM. */ - CHEEVOS_LOG(CHEEVOS_TAG "SNES memory address %X adjusted to %X\n", address, address + 0x7e0000); + CHEEVOS_LOG(RCHEEVOS_TAG "SNES memory address %X adjusted to %X\n", address, address + 0x7e0000); address += 0x7e0000; } else { /* Save RAM. */ - CHEEVOS_LOG(CHEEVOS_TAG "SNES memory address %X adjusted to %X\n", address, address + 0x006000 - 0x020000); + CHEEVOS_LOG(RCHEEVOS_TAG "SNES memory address %X adjusted to %X\n", address, address + 0x006000 - 0x020000); address += 0x006000 - 0x020000; } } @@ -198,16 +198,16 @@ const uint8_t* rcheevos_patch_address(unsigned address, int console) unsigned addr = address; pointer = desc->core.ptr; - address = (unsigned)cheevos_var_reduce( + address = (unsigned)rcheevos_var_reduce( (addr - desc->core.start) & desc->disconnect_mask, desc->core.disconnect); if (address >= desc->core.len) - address -= cheevos_var_highest_bit(address); + address -= rcheevos_var_highest_bit(address); address += desc->core.offset; - CHEEVOS_LOG(CHEEVOS_TAG "address %X set to descriptor %d at offset %X\n", addr, (int)((desc - system->mmaps.descriptors) + 1), address); + CHEEVOS_LOG(RCHEEVOS_TAG "address %X set to descriptor %d at offset %X\n", addr, (int)((desc - system->mmaps.descriptors) + 1), address); break; } } diff --git a/cheevos-new/fixup.h b/cheevos-new/fixup.h index e2b9946a0d..c0021fb6d9 100644 --- a/cheevos-new/fixup.h +++ b/cheevos-new/fixup.h @@ -27,19 +27,19 @@ typedef struct { unsigned address; const uint8_t* location; -} cheevos_fixup_t; +} rcheevos_fixup_t; typedef struct { - cheevos_fixup_t* elements; + rcheevos_fixup_t* elements; unsigned capacity, count; bool dirty; -} cheevos_fixups_t; +} rcheevos_fixups_t; -void rcheevos_fixup_init(cheevos_fixups_t* fixups); -void rcheevos_fixup_destroy(cheevos_fixups_t* fixups); +void rcheevos_fixup_init(rcheevos_fixups_t* fixups); +void rcheevos_fixup_destroy(rcheevos_fixups_t* fixups); -const uint8_t* rcheevos_fixup_find(cheevos_fixups_t* fixups, unsigned address, int console); +const uint8_t* rcheevos_fixup_find(rcheevos_fixups_t* fixups, unsigned address, int console); const uint8_t* rcheevos_patch_address(unsigned address, int console); diff --git a/cheevos-new/hash.c b/cheevos-new/hash.c index 7b84bbbc62..07d028a7f4 100644 --- a/cheevos-new/hash.c +++ b/cheevos-new/hash.c @@ -1,6 +1,6 @@ #include "hash.h" -uint32_t cheevos_djb2(const char* str, size_t length) +uint32_t rcheevos_djb2(const char* str, size_t length) { const unsigned char* aux = (const unsigned char*)str; uint32_t hash = 5381; diff --git a/cheevos-new/hash.h b/cheevos-new/hash.h index ec6e802947..c13b5ecde7 100644 --- a/cheevos-new/hash.h +++ b/cheevos-new/hash.h @@ -23,7 +23,7 @@ RETRO_BEGIN_DECLS -uint32_t cheevos_djb2(const char* str, size_t length); +uint32_t rcheevos_djb2(const char* str, size_t length); RETRO_END_DECLS diff --git a/cheevos-new/parser.c b/cheevos-new/parser.c index 19c503139d..38ec776089 100644 --- a/cheevos-new/parser.c +++ b/cheevos-new/parser.c @@ -38,21 +38,21 @@ typedef struct int is_key; const char* value; size_t length; -} cheevos_getvalueud_t; +} rcheevos_getvalueud_t; -static int cheevos_getvalue_key(void* userdata, +static int rcheevos_getvalue_key(void* userdata, const char* name, size_t length) { - cheevos_getvalueud_t* ud = (cheevos_getvalueud_t*)userdata; + rcheevos_getvalueud_t* ud = (rcheevos_getvalueud_t*)userdata; - ud->is_key = cheevos_djb2(name, length) == ud->key_hash; + ud->is_key = rcheevos_djb2(name, length) == ud->key_hash; return 0; } -static int cheevos_getvalue_string(void* userdata, +static int rcheevos_getvalue_string(void* userdata, const char* string, size_t length) { - cheevos_getvalueud_t* ud = (cheevos_getvalueud_t*)userdata; + rcheevos_getvalueud_t* ud = (rcheevos_getvalueud_t*)userdata; if (ud->is_key) { @@ -64,9 +64,9 @@ static int cheevos_getvalue_string(void* userdata, return 0; } -static int cheevos_getvalue_boolean(void* userdata, int istrue) +static int rcheevos_getvalue_boolean(void* userdata, int istrue) { - cheevos_getvalueud_t* ud = (cheevos_getvalueud_t*)userdata; + rcheevos_getvalueud_t* ud = (rcheevos_getvalueud_t*)userdata; if (ud->is_key) { @@ -87,9 +87,9 @@ static int cheevos_getvalue_boolean(void* userdata, int istrue) return 0; } -static int cheevos_getvalue_null(void* userdata) +static int rcheevos_getvalue_null(void* userdata) { - cheevos_getvalueud_t* ud = (cheevos_getvalueud_t*)userdata; + rcheevos_getvalueud_t* ud = (rcheevos_getvalueud_t*)userdata; if (ud->is_key ) { @@ -101,7 +101,7 @@ static int cheevos_getvalue_null(void* userdata) return 0; } -static int cheevos_get_value(const char* json, unsigned key_hash, +static int rcheevos_get_value(const char* json, unsigned key_hash, char* value, size_t length) { static const jsonsax_handlers_t handlers = @@ -112,15 +112,15 @@ static int cheevos_get_value(const char* json, unsigned key_hash, NULL, NULL, NULL, - cheevos_getvalue_key, + rcheevos_getvalue_key, NULL, - cheevos_getvalue_string, - cheevos_getvalue_string, /* number */ - cheevos_getvalue_boolean, - cheevos_getvalue_null + rcheevos_getvalue_string, + rcheevos_getvalue_string, /* number */ + rcheevos_getvalue_boolean, + rcheevos_getvalue_null }; - cheevos_getvalueud_t ud; + rcheevos_getvalueud_t ud; ud.key_hash = key_hash; ud.is_key = 0; @@ -142,14 +142,14 @@ static int cheevos_get_value(const char* json, unsigned key_hash, Returns the token of the error message *****************************************************************************/ -int cheevos_get_token(const char* json, char* token, size_t length) +int rcheevos_get_token(const char* json, char* token, size_t length) { - cheevos_get_value(json, CHEEVOS_JSON_KEY_ERROR, token, length); + rcheevos_get_value(json, CHEEVOS_JSON_KEY_ERROR, token, length); if (!string_is_empty(token)) return -1; - return cheevos_get_value(json, CHEEVOS_JSON_KEY_TOKEN, token, length); + return rcheevos_get_value(json, CHEEVOS_JSON_KEY_TOKEN, token, length); } /***************************************************************************** @@ -164,23 +164,23 @@ typedef struct unsigned core_count; unsigned unofficial_count; unsigned lboard_count; -} cheevos_countud_t; +} rcheevos_countud_t; -static int cheevos_count_end_array(void* userdata) +static int rcheevos_count_end_array(void* userdata) { - cheevos_countud_t* ud = (cheevos_countud_t*)userdata; + rcheevos_countud_t* ud = (rcheevos_countud_t*)userdata; ud->in_cheevos = 0; ud->in_lboards = 0; return 0; } -static int cheevos_count_key(void* userdata, +static int rcheevos_count_key(void* userdata, const char* name, size_t length) { - cheevos_countud_t* ud = (cheevos_countud_t*)userdata; + rcheevos_countud_t* ud = (rcheevos_countud_t*)userdata; - ud->field_hash = cheevos_djb2(name, length); + ud->field_hash = rcheevos_djb2(name, length); if (ud->field_hash == CHEEVOS_JSON_KEY_ACHIEVEMENTS) ud->in_cheevos = 1; @@ -190,10 +190,10 @@ static int cheevos_count_key(void* userdata, return 0; } -static int cheevos_count_number(void* userdata, +static int rcheevos_count_number(void* userdata, const char* number, size_t length) { - cheevos_countud_t* ud = (cheevos_countud_t*)userdata; + rcheevos_countud_t* ud = (rcheevos_countud_t*)userdata; if (ud->in_cheevos && ud->field_hash == CHEEVOS_JSON_KEY_FLAGS) { @@ -210,7 +210,7 @@ static int cheevos_count_number(void* userdata, return 0; } -static int cheevos_count_cheevos(const char* json, +static int rcheevos_count_cheevos(const char* json, unsigned* core_count, unsigned* unofficial_count, unsigned* lboard_count) { @@ -221,17 +221,17 @@ static int cheevos_count_cheevos(const char* json, NULL, NULL, NULL, - cheevos_count_end_array, - cheevos_count_key, + rcheevos_count_end_array, + rcheevos_count_key, NULL, NULL, - cheevos_count_number, + rcheevos_count_number, NULL, NULL }; int res; - cheevos_countud_t ud; + rcheevos_countud_t ud; ud.in_cheevos = 0; ud.in_lboards = 0; ud.core_count = 0; @@ -255,7 +255,7 @@ typedef struct { const char* string; size_t length; -} cheevos_field_t; +} rcheevos_field_t; typedef struct { @@ -266,14 +266,14 @@ typedef struct unsigned unofficial_count; unsigned lboard_count; - cheevos_field_t* field; - cheevos_field_t id, memaddr, title, desc, points, author; - cheevos_field_t modified, created, badge, flags, format; + rcheevos_field_t* field; + rcheevos_field_t id, memaddr, title, desc, points, author; + rcheevos_field_t modified, created, badge, flags, format; - cheevos_rapatchdata_t* patchdata; -} cheevos_readud_t; + rcheevos_rapatchdata_t* patchdata; +} rcheevos_readud_t; -static const char* cheevos_dupstr(const cheevos_field_t* field) +static const char* rcheevos_dupstr(const rcheevos_field_t* field) { char* string = (char*)malloc(field->length + 1); @@ -285,9 +285,9 @@ static const char* cheevos_dupstr(const cheevos_field_t* field) return string; } -static int cheevos_new_cheevo(cheevos_readud_t* ud) +static int rcheevos_new_cheevo(rcheevos_readud_t* ud) { - cheevos_racheevo_t* cheevo = NULL; + rcheevos_racheevo_t* cheevo = NULL; unsigned flags = (unsigned)strtol(ud->flags.string, NULL, 10); if (flags == 3) @@ -297,10 +297,10 @@ static int cheevos_new_cheevo(cheevos_readud_t* ud) else return 0; - cheevo->title = cheevos_dupstr(&ud->title); - cheevo->description = cheevos_dupstr(&ud->desc); - cheevo->badge = cheevos_dupstr(&ud->badge); - cheevo->memaddr = cheevos_dupstr(&ud->memaddr); + cheevo->title = rcheevos_dupstr(&ud->title); + cheevo->description = rcheevos_dupstr(&ud->desc); + cheevo->badge = rcheevos_dupstr(&ud->badge); + cheevo->memaddr = rcheevos_dupstr(&ud->memaddr); cheevo->points = (unsigned)strtol(ud->points.string, NULL, 10); cheevo->id = (unsigned)strtol(ud->id.string, NULL, 10); @@ -319,14 +319,14 @@ static int cheevos_new_cheevo(cheevos_readud_t* ud) return 0; } -static int cheevos_new_lboard(cheevos_readud_t* ud) +static int rcheevos_new_lboard(rcheevos_readud_t* ud) { - cheevos_ralboard_t* lboard = ud->patchdata->lboards + ud->lboard_count++; + rcheevos_ralboard_t* lboard = ud->patchdata->lboards + ud->lboard_count++; - lboard->title = cheevos_dupstr(&ud->title); - lboard->description = cheevos_dupstr(&ud->desc); - lboard->format = cheevos_dupstr(&ud->format); - lboard->mem = cheevos_dupstr(&ud->memaddr); + lboard->title = rcheevos_dupstr(&ud->title); + lboard->description = rcheevos_dupstr(&ud->desc); + lboard->format = rcheevos_dupstr(&ud->format); + lboard->mem = rcheevos_dupstr(&ud->memaddr); lboard->id = (unsigned)strtol(ud->id.string, NULL, 10); if ( !lboard->title @@ -344,35 +344,35 @@ static int cheevos_new_lboard(cheevos_readud_t* ud) return 0; } -static int cheevos_read_end_object(void* userdata) +static int rcheevos_read_end_object(void* userdata) { - cheevos_readud_t* ud = (cheevos_readud_t*)userdata; + rcheevos_readud_t* ud = (rcheevos_readud_t*)userdata; if (ud->in_cheevos) - return cheevos_new_cheevo(ud); + return rcheevos_new_cheevo(ud); if (ud->in_lboards) - return cheevos_new_lboard(ud); + return rcheevos_new_lboard(ud); return 0; } -static int cheevos_read_end_array(void* userdata) +static int rcheevos_read_end_array(void* userdata) { - cheevos_readud_t* ud = (cheevos_readud_t*)userdata; + rcheevos_readud_t* ud = (rcheevos_readud_t*)userdata; ud->in_cheevos = 0; ud->in_lboards = 0; return 0; } -static int cheevos_read_key(void* userdata, +static int rcheevos_read_key(void* userdata, const char* name, size_t length) { - cheevos_readud_t* ud = (cheevos_readud_t*)userdata; + rcheevos_readud_t* ud = (rcheevos_readud_t*)userdata; int common = ud->in_cheevos || ud->in_lboards; - uint32_t hash = cheevos_djb2(name, length); + uint32_t hash = rcheevos_djb2(name, length); ud->field = NULL; switch (hash) @@ -441,10 +441,10 @@ static int cheevos_read_key(void* userdata, return 0; } -static int cheevos_read_string(void* userdata, +static int rcheevos_read_string(void* userdata, const char* string, size_t length) { - cheevos_readud_t* ud = (cheevos_readud_t*)userdata; + rcheevos_readud_t* ud = (rcheevos_readud_t*)userdata; if (ud->field) { @@ -455,10 +455,10 @@ static int cheevos_read_string(void* userdata, return 0; } -static int cheevos_read_number(void* userdata, +static int rcheevos_read_number(void* userdata, const char* number, size_t length) { - cheevos_readud_t* ud = (cheevos_readud_t*)userdata; + rcheevos_readud_t* ud = (rcheevos_readud_t*)userdata; if (ud->field) { @@ -474,29 +474,29 @@ static int cheevos_read_number(void* userdata, return 0; } -int cheevos_get_patchdata(const char* json, cheevos_rapatchdata_t* patchdata) +int rcheevos_get_patchdata(const char* json, rcheevos_rapatchdata_t* patchdata) { static const jsonsax_handlers_t handlers = { NULL, NULL, NULL, - cheevos_read_end_object, + rcheevos_read_end_object, NULL, - cheevos_read_end_array, - cheevos_read_key, + rcheevos_read_end_array, + rcheevos_read_key, NULL, - cheevos_read_string, - cheevos_read_number, + rcheevos_read_string, + rcheevos_read_number, NULL, NULL }; - cheevos_readud_t ud; + rcheevos_readud_t ud; int res; /* Count the number of achievements in the JSON file. */ - res = cheevos_count_cheevos(json, &patchdata->core_count, + res = rcheevos_count_cheevos(json, &patchdata->core_count, &patchdata->unofficial_count, &patchdata->lboard_count); if (res != JSONSAX_OK) @@ -504,14 +504,14 @@ int cheevos_get_patchdata(const char* json, cheevos_rapatchdata_t* patchdata) /* Allocate the achievements. */ - patchdata->core = (cheevos_racheevo_t*) - calloc(patchdata->core_count, sizeof(cheevos_racheevo_t)); + patchdata->core = (rcheevos_racheevo_t*) + calloc(patchdata->core_count, sizeof(rcheevos_racheevo_t)); - patchdata->unofficial = (cheevos_racheevo_t*) - calloc(patchdata->unofficial_count, sizeof(cheevos_racheevo_t)); + patchdata->unofficial = (rcheevos_racheevo_t*) + calloc(patchdata->unofficial_count, sizeof(rcheevos_racheevo_t)); - patchdata->lboards = (cheevos_ralboard_t*) - calloc(patchdata->lboard_count, sizeof(cheevos_ralboard_t)); + patchdata->lboards = (rcheevos_ralboard_t*) + calloc(patchdata->lboard_count, sizeof(rcheevos_ralboard_t)); if (!patchdata->core || !patchdata->unofficial || @@ -536,7 +536,7 @@ int cheevos_get_patchdata(const char* json, cheevos_rapatchdata_t* patchdata) if (jsonsax_parse(json, &handlers, (void*)&ud) != JSONSAX_OK) { - cheevos_free_patchdata(patchdata); + rcheevos_free_patchdata(patchdata); return -1; } @@ -547,11 +547,11 @@ int cheevos_get_patchdata(const char* json, cheevos_rapatchdata_t* patchdata) Frees the patchdata *****************************************************************************/ -void cheevos_free_patchdata(cheevos_rapatchdata_t* patchdata) +void rcheevos_free_patchdata(rcheevos_rapatchdata_t* patchdata) { unsigned i = 0, count = 0; - const cheevos_racheevo_t* cheevo = NULL; - const cheevos_ralboard_t* lboard = NULL; + const rcheevos_racheevo_t* cheevo = NULL; + const rcheevos_ralboard_t* lboard = NULL; cheevo = patchdata->core; @@ -603,22 +603,22 @@ Deactivates unlocked cheevos typedef struct { int is_element; - cheevos_unlock_cb_t unlock_cb; + rcheevos_unlock_cb_t unlock_cb; void* userdata; -} cheevos_deactivate_t; +} rcheevos_deactivate_t; -static int cheevos_deactivate_index(void* userdata, unsigned int index) +static int rcheevos_deactivate_index(void* userdata, unsigned int index) { - cheevos_deactivate_t* ud = (cheevos_deactivate_t*)userdata; + rcheevos_deactivate_t* ud = (rcheevos_deactivate_t*)userdata; ud->is_element = 1; return 0; } -static int cheevos_deactivate_number(void* userdata, +static int rcheevos_deactivate_number(void* userdata, const char* number, size_t length) { - cheevos_deactivate_t* ud = (cheevos_deactivate_t*)userdata; + rcheevos_deactivate_t* ud = (rcheevos_deactivate_t*)userdata; unsigned id = 0; if (ud->is_element) @@ -632,7 +632,7 @@ static int cheevos_deactivate_number(void* userdata, return 0; } -void cheevos_deactivate_unlocks(const char* json, cheevos_unlock_cb_t unlock_cb, void* userdata) +void rcheevos_deactivate_unlocks(const char* json, rcheevos_unlock_cb_t unlock_cb, void* userdata) { static const jsonsax_handlers_t handlers = { @@ -643,14 +643,14 @@ void cheevos_deactivate_unlocks(const char* json, cheevos_unlock_cb_t unlock_cb, NULL, NULL, NULL, - cheevos_deactivate_index, + rcheevos_deactivate_index, NULL, - cheevos_deactivate_number, + rcheevos_deactivate_number, NULL, NULL }; - cheevos_deactivate_t ud; + rcheevos_deactivate_t ud; ud.is_element = 0; ud.unlock_cb = unlock_cb; @@ -667,7 +667,7 @@ unsigned chevos_get_gameid(const char* json) { char gameid[32]; - if (cheevos_get_value(json, CHEEVOS_JSON_KEY_GAMEID, gameid, sizeof(gameid)) != 0) + if (rcheevos_get_value(json, CHEEVOS_JSON_KEY_GAMEID, gameid, sizeof(gameid)) != 0) return 0; return (unsigned)strtol(gameid, NULL, 10); diff --git a/cheevos-new/parser.h b/cheevos-new/parser.h index 5b10de6236..b9706f5474 100644 --- a/cheevos-new/parser.h +++ b/cheevos-new/parser.h @@ -31,7 +31,7 @@ typedef struct { const char* memaddr; unsigned points; unsigned id; -} cheevos_racheevo_t; +} rcheevos_racheevo_t; typedef struct { const char* title; @@ -39,28 +39,28 @@ typedef struct { const char* format; const char* mem; unsigned id; -} cheevos_ralboard_t; +} rcheevos_ralboard_t; typedef struct { unsigned console_id; - cheevos_racheevo_t* core; - cheevos_racheevo_t* unofficial; - cheevos_ralboard_t* lboards; + rcheevos_racheevo_t* core; + rcheevos_racheevo_t* unofficial; + rcheevos_ralboard_t* lboards; unsigned core_count; unsigned unofficial_count; unsigned lboard_count; -} cheevos_rapatchdata_t; +} rcheevos_rapatchdata_t; -typedef void (*cheevos_unlock_cb_t)(unsigned id, void* userdata); +typedef void (*rcheevos_unlock_cb_t)(unsigned id, void* userdata); -int cheevos_get_token(const char* json, char* token, size_t length); +int rcheevos_get_token(const char* json, char* token, size_t length); -int cheevos_get_patchdata(const char* json, cheevos_rapatchdata_t* patchdata); -void cheevos_free_patchdata(cheevos_rapatchdata_t* patchdata); +int rcheevos_get_patchdata(const char* json, rcheevos_rapatchdata_t* patchdata); +void rcheevos_free_patchdata(rcheevos_rapatchdata_t* patchdata); -void cheevos_deactivate_unlocks(const char* json, cheevos_unlock_cb_t unlock_cb, void* userdata); +void rcheevos_deactivate_unlocks(const char* json, rcheevos_unlock_cb_t unlock_cb, void* userdata); unsigned chevos_get_gameid(const char* json); diff --git a/cheevos-new/util.h b/cheevos-new/util.h index ac556bf681..1794ef3ebb 100644 --- a/cheevos-new/util.h +++ b/cheevos-new/util.h @@ -31,7 +31,7 @@ Setup - mainly for debugging End of setup *****************************************************************************/ -#define CHEEVOS_TAG "[RCHEEVOS]: " +#define RCHEEVOS_TAG "[RCHEEVOS]: " #define CHEEVOS_FREE(p) do { void* q = (void*)p; if (q != NULL) free(q); } while (0) #ifdef CHEEVOS_VERBOSE @@ -41,10 +41,10 @@ End of setup #else -#define CHEEVOS_LOG cheevos_log +#define CHEEVOS_LOG rcheevos_log #define CHEEVOS_ERR RARCH_ERR -void cheevos_log(const char *fmt, ...); +void rcheevos_log(const char *fmt, ...); #endif diff --git a/cheevos/var.c b/cheevos/var.c index 18c8955dac..dfd3035681 100644 --- a/cheevos/var.c +++ b/cheevos/var.c @@ -316,7 +316,7 @@ uint8_t* cheevos_var_get_memory(const cheevos_var_t* var) meminfo.id = RETRO_MEMORY_RTC; break; default: - CHEEVOS_ERR(CHEEVOS_TAG "invalid bank id: %s\n", var->bank_id); + CHEEVOS_ERR(CHEEVOS_TAG "invalid bank id: %d\n", var->bank_id); break; } diff --git a/deps/rcheevos/test/Makefile b/deps/rcheevos/test/Makefile deleted file mode 100644 index 4dc28dd152..0000000000 --- a/deps/rcheevos/test/Makefile +++ /dev/null @@ -1,36 +0,0 @@ -RC_SRC=../src/rcheevos -RC_URL_SRC=../src/rurl -LUA_SRC=lua/src - -OBJ=$(RC_SRC)/trigger.o $(RC_SRC)/condset.o $(RC_SRC)/condition.o $(RC_SRC)/operand.o \ - $(RC_SRC)/term.o $(RC_SRC)/expression.o $(RC_SRC)/value.o $(RC_SRC)/lboard.o \ - $(RC_SRC)/alloc.o $(RC_SRC)/format.o $(RC_SRC)/richpresence.o \ - $(RC_URL_SRC)/url.o \ - $(LUA_SRC)/lapi.o $(LUA_SRC)/lcode.o $(LUA_SRC)/lctype.o $(LUA_SRC)/ldebug.o \ - $(LUA_SRC)/ldo.o $(LUA_SRC)/ldump.o $(LUA_SRC)/lfunc.o $(LUA_SRC)/lgc.o $(LUA_SRC)/llex.o \ - $(LUA_SRC)/lmem.o $(LUA_SRC)/lobject.o $(LUA_SRC)/lopcodes.o $(LUA_SRC)/lparser.o \ - $(LUA_SRC)/lstate.o $(LUA_SRC)/lstring.o $(LUA_SRC)/ltable.o $(LUA_SRC)/ltm.o \ - $(LUA_SRC)/lundump.o $(LUA_SRC)/lvm.o $(LUA_SRC)/lzio.o $(LUA_SRC)/lauxlib.o \ - $(LUA_SRC)/lbaselib.o $(LUA_SRC)/lbitlib.o $(LUA_SRC)/lcorolib.o $(LUA_SRC)/ldblib.o \ - $(LUA_SRC)/liolib.o $(LUA_SRC)/lmathlib.o $(LUA_SRC)/loslib.o $(LUA_SRC)/lstrlib.o \ - $(LUA_SRC)/ltablib.o $(LUA_SRC)/lutf8lib.o $(LUA_SRC)/loadlib.o $(LUA_SRC)/linit.o \ - test.o - -all: test - -%.o: %.c - gcc -Wall -O0 -g -std=c89 -ansi -Wno-long-long -DLUA_32BITS -I../include -I$(RC_SRC) -I$(LUA_SRC) -c $< -o $@ - -test: $(OBJ) - gcc -o $@ $+ -lm - -test.o: smw_snes.h galaga_nes.h - -smw_snes.h: smw_snes.json - xxd -i $< | sed "s@unsigned@const@" > $@ - -galaga_nes.h: galaga_nes.json - xxd -i $< | sed "s@unsigned@const@" > $@ - -clean: - rm -f test $(OBJ) smw_snes.h galaga_nes.h diff --git a/deps/rcheevos/test/galaga_nes.json b/deps/rcheevos/test/galaga_nes.json deleted file mode 100644 index 9039bec3b1..0000000000 --- a/deps/rcheevos/test/galaga_nes.json +++ /dev/null @@ -1,205 +0,0 @@ -{ - "Success": true, - "PatchData": { - "ID": 1701, - "Title": "Galaga", - "ConsoleID": 7, - "ForumTopicID": 2528, - "Flags": 0, - "ImageIcon": "\/Images\/002324.png", - "ImageTitle": "\/Images\/002322.png", - "ImageIngame": "\/Images\/002323.png", - "ImageBoxArt": "\/Images\/012173.png", - "Publisher": "Bandai America (NA), Namco (JP)", - "Developer": "Namco", - "Genre": "Fixed Shooter", - "Released": "Nov 1988 (NA), Feb 1985 (JP)", - "IsFinal": false, - "ConsoleName": "NES", - "RichPresencePatch": null, - "Achievements": [{ - "ID": 10055, - "MemAddr": "0xH0482=5", - "Title": "That Was Easy", - "Description": "Get to level 5.", - "Points": 5, - "Author": "dude1286", - "Modified": 1404761487, - "Created": 1404761423, - "BadgeName": "09723", - "Flags": 3 - }, { - "ID": 10056, - "MemAddr": "0xH0481=1", - "Title": "Getting Slightly Difficult", - "Description": "Get to level 10.", - "Points": 20, - "Author": "dude1286", - "Modified": 1404761490, - "Created": 1404761427, - "BadgeName": "09724", - "Flags": 3 - }, { - "ID": 10057, - "MemAddr": "0xH0481=2", - "Title": "Hail of Bullets", - "Description": "Get to level 20.", - "Points": 25, - "Author": "dude1286", - "Modified": 1404761493, - "Created": 1404761430, - "BadgeName": "09725", - "Flags": 3 - }, { - "ID": 10058, - "MemAddr": "0xH0481=3", - "Title": "Bulletstorm", - "Description": "Get to level 30.", - "Points": 40, - "Author": "dude1286", - "Modified": 1404761498, - "Created": 1404761435, - "BadgeName": "09726", - "Flags": 3 - }, { - "ID": 10059, - "MemAddr": "0xH0480=0_0xH0481=0_0xH0482=3_R:0xH0482!=3.1._0xH00c4=40", - "Title": "Challenge 1 Master", - "Description": "Get a perfect on Stage 3.", - "Points": 15, - "Author": "dude1286", - "Modified": 1404796406, - "Created": 1404761443, - "BadgeName": "09715", - "Flags": 3 - }, { - "ID": 10060, - "MemAddr": "0xH0480=0_0xH0481=0_0xH0482=7_0xH00c4=40_R:0xH0482!=7.1.", - "Title": "Challenge 2 Master", - "Description": "Get a perfect on Stage 7.", - "Points": 20, - "Author": "dude1286", - "Modified": 1404796449, - "Created": 1404761447, - "BadgeName": "09716", - "Flags": 3 - }, { - "ID": 10061, - "MemAddr": "0xH0480=0_0xH0481=1_0xH0482=1_R:0xH0482!=1.1._0xH00c4=40", - "Title": "Challenge 3 Master", - "Description": "Get a perfect on Stage 11.", - "Points": 25, - "Author": "dude1286", - "Modified": 1404796468, - "Created": 1404761450, - "BadgeName": "09717", - "Flags": 3 - }, { - "ID": 10062, - "MemAddr": "0xH0480=0_0xH0481=1_0xH0482=5_R:0xH0482!=5.1._0xH00c4=40", - "Title": "Challenge 4 Master", - "Description": "Get a perfect on Stage 15.", - "Points": 30, - "Author": "dude1286", - "Modified": 1404796484, - "Created": 1404761454, - "BadgeName": "09718", - "Flags": 3 - }, { - "ID": 10063, - "MemAddr": "0xH0480=0_0xH0481=1_0xH0482=9_R:0xH0482!=9.1._0xH00c4=40", - "Title": "Challenge 5 Master", - "Description": "Get a perfect on Stage 19.", - "Points": 35, - "Author": "dude1286", - "Modified": 1404796507, - "Created": 1404761457, - "BadgeName": "09719", - "Flags": 3 - }, { - "ID": 10064, - "MemAddr": "0xH0480=0_0xH0481=2_0xH0482=3_R:0xH0482!=3.1._0xH00c4=40", - "Title": "Challenge 6 Master", - "Description": "Get a perfect on Stage 23.", - "Points": 40, - "Author": "dude1286", - "Modified": 1404796523, - "Created": 1404761461, - "BadgeName": "09720", - "Flags": 3 - }, { - "ID": 10065, - "MemAddr": "0xH0480=0_0xH0481=2_0xH0482=7_R:0xH0482!=7.1._0xH00c4=40", - "Title": "Challenge 7 Master", - "Description": "Get a perfect on Stage 27.", - "Points": 45, - "Author": "dude1286", - "Modified": 1404796555, - "Created": 1404761464, - "BadgeName": "09721", - "Flags": 3 - }, { - "ID": 10066, - "MemAddr": "0xH0480=0_0xH0481=3_0xH0482=1_R:0xH0482!=1.1._0xH00c4=40", - "Title": "Challenge 8 Master", - "Description": "Get a perfect on Stage 31.", - "Points": 50, - "Author": "dude1286", - "Modified": 1404796574, - "Created": 1404761468, - "BadgeName": "09722", - "Flags": 3 - }, { - "ID": 10067, - "MemAddr": "0xH0079=4_d0xH0079=3", - "Title": "Was That On Purpose?", - "Description": "Get one of your ships captured by the enemy.", - "Points": 5, - "Author": "dude1286", - "Modified": 1404761532, - "Created": 1404761472, - "BadgeName": "09714", - "Flags": 3 - }, { - "ID": 10068, - "MemAddr": "d0xH0079=6_0xH0079=1", - "Title": "Doubled Fire", - "Description": "Save a captured ship and have double the fire power.", - "Points": 10, - "Author": "dude1286", - "Modified": 1404761536, - "Created": 1404761476, - "BadgeName": "09713", - "Flags": 3 - }, { - "ID": 10069, - "MemAddr": "0xH00e2>=3_d0xH00e2<3", - "Title": "Default Score", - "Description": "Get higher than the default hi-score.", - "Points": 10, - "Author": "dude1286", - "Modified": 1404761540, - "Created": 1404761479, - "BadgeName": "09727", - "Flags": 3 - }, { - "ID": 10070, - "MemAddr": "0xH0482=2_d0xH0482=1_0xH04af=0xH04a7_0xH04ae=0xH04a6_0xH04ad=0xH04a5", - "Title": "Perfect Shot", - "Description": "Get to the second level without missing a shot.", - "Points": 25, - "Author": "dude1286", - "Modified": 1404761543, - "Created": 1404761482, - "BadgeName": "09712", - "Flags": 3 - }], - "Leaderboards": [{ - "ID": 310, - "Mem": "STA:0xh0482=1::CAN:0xh0470=0_0xh0471=0::SUB:0xh0485=0_d0xh007a=0_0xh007a=1::VAL:0xh00e5*10_0xh00e4*100_0xh00e3*1000_0xh00e2*10000_0xh00e1*100000_0xh00e0*1000000", - "Format": "SCORE", - "Title": "Hi-Score", - "Description": "Get the highest score possible." - }] - } -} \ No newline at end of file diff --git a/deps/rcheevos/test/lua/Makefile b/deps/rcheevos/test/lua/Makefile deleted file mode 100644 index 119110d2f0..0000000000 --- a/deps/rcheevos/test/lua/Makefile +++ /dev/null @@ -1,114 +0,0 @@ -# Makefile for installing Lua -# See doc/readme.html for installation and customization instructions. - -# == CHANGE THE SETTINGS BELOW TO SUIT YOUR ENVIRONMENT ======================= - -# Your platform. See PLATS for possible values. -PLAT= none - -# Where to install. The installation starts in the src and doc directories, -# so take care if INSTALL_TOP is not an absolute path. See the local target. -# You may want to make INSTALL_LMOD and INSTALL_CMOD consistent with -# LUA_ROOT, LUA_LDIR, and LUA_CDIR in luaconf.h. -INSTALL_TOP= /usr/local -INSTALL_BIN= $(INSTALL_TOP)/bin -INSTALL_INC= $(INSTALL_TOP)/include -INSTALL_LIB= $(INSTALL_TOP)/lib -INSTALL_MAN= $(INSTALL_TOP)/man/man1 -INSTALL_LMOD= $(INSTALL_TOP)/share/lua/$V -INSTALL_CMOD= $(INSTALL_TOP)/lib/lua/$V - -# How to install. If your install program does not support "-p", then -# you may have to run ranlib on the installed liblua.a. -INSTALL= install -p -INSTALL_EXEC= $(INSTALL) -m 0755 -INSTALL_DATA= $(INSTALL) -m 0644 -# -# If you don't have "install" you can use "cp" instead. -# INSTALL= cp -p -# INSTALL_EXEC= $(INSTALL) -# INSTALL_DATA= $(INSTALL) - -# Other utilities. -MKDIR= mkdir -p -RM= rm -f - -# == END OF USER SETTINGS -- NO NEED TO CHANGE ANYTHING BELOW THIS LINE ======= - -# Convenience platforms targets. -PLATS= aix bsd c89 freebsd generic linux macosx mingw posix solaris - -# What to install. -TO_BIN= lua luac -TO_INC= lua.h luaconf.h lualib.h lauxlib.h lua.hpp -TO_LIB= liblua.a -TO_MAN= lua.1 luac.1 - -# Lua version and release. -V= 5.3 -R= $V.4 - -# Targets start here. -all: $(PLAT) - -$(PLATS) clean: - cd src && $(MAKE) $@ - -test: dummy - src/lua -v - -install: dummy - cd src && $(MKDIR) $(INSTALL_BIN) $(INSTALL_INC) $(INSTALL_LIB) $(INSTALL_MAN) $(INSTALL_LMOD) $(INSTALL_CMOD) - cd src && $(INSTALL_EXEC) $(TO_BIN) $(INSTALL_BIN) - cd src && $(INSTALL_DATA) $(TO_INC) $(INSTALL_INC) - cd src && $(INSTALL_DATA) $(TO_LIB) $(INSTALL_LIB) - cd doc && $(INSTALL_DATA) $(TO_MAN) $(INSTALL_MAN) - -uninstall: - cd src && cd $(INSTALL_BIN) && $(RM) $(TO_BIN) - cd src && cd $(INSTALL_INC) && $(RM) $(TO_INC) - cd src && cd $(INSTALL_LIB) && $(RM) $(TO_LIB) - cd doc && cd $(INSTALL_MAN) && $(RM) $(TO_MAN) - -local: - $(MAKE) install INSTALL_TOP=../install - -none: - @echo "Please do 'make PLATFORM' where PLATFORM is one of these:" - @echo " $(PLATS)" - @echo "See doc/readme.html for complete instructions." - -# make may get confused with test/ and install/ -dummy: - -# echo config parameters -echo: - @cd src && $(MAKE) -s echo - @echo "PLAT= $(PLAT)" - @echo "V= $V" - @echo "R= $R" - @echo "TO_BIN= $(TO_BIN)" - @echo "TO_INC= $(TO_INC)" - @echo "TO_LIB= $(TO_LIB)" - @echo "TO_MAN= $(TO_MAN)" - @echo "INSTALL_TOP= $(INSTALL_TOP)" - @echo "INSTALL_BIN= $(INSTALL_BIN)" - @echo "INSTALL_INC= $(INSTALL_INC)" - @echo "INSTALL_LIB= $(INSTALL_LIB)" - @echo "INSTALL_MAN= $(INSTALL_MAN)" - @echo "INSTALL_LMOD= $(INSTALL_LMOD)" - @echo "INSTALL_CMOD= $(INSTALL_CMOD)" - @echo "INSTALL_EXEC= $(INSTALL_EXEC)" - @echo "INSTALL_DATA= $(INSTALL_DATA)" - -# echo pkg-config data -pc: - @echo "version=$R" - @echo "prefix=$(INSTALL_TOP)" - @echo "libdir=$(INSTALL_LIB)" - @echo "includedir=$(INSTALL_INC)" - -# list targets that do not create files (but not all makes understand .PHONY) -.PHONY: all $(PLATS) clean test install local none dummy echo pecho lecho - -# (end of Makefile) diff --git a/deps/rcheevos/test/lua/README b/deps/rcheevos/test/lua/README deleted file mode 100644 index 0b31908a06..0000000000 --- a/deps/rcheevos/test/lua/README +++ /dev/null @@ -1,6 +0,0 @@ - -This is Lua 5.3.4, released on 12 Jan 2017. - -For installation instructions, license details, and -further information about Lua, see doc/readme.html. - diff --git a/deps/rcheevos/test/lua/doc/contents.html b/deps/rcheevos/test/lua/doc/contents.html deleted file mode 100644 index 445556f964..0000000000 --- a/deps/rcheevos/test/lua/doc/contents.html +++ /dev/null @@ -1,619 +0,0 @@ - - - -Lua 5.3 Reference Manual - contents - - - - - - - -

-Lua -Lua 5.3 Reference Manual -

- -

-The reference manual is the official definition of the Lua language. -
-For a complete introduction to Lua programming, see the book -Programming in Lua. - -

-start -· -contents -· -index -· -other versions -
- -

- -Copyright © 2015–2017 Lua.org, PUC-Rio. -Freely available under the terms of the -Lua license. - - -

Contents

- - -

Index

- - - - - - - -
-

Lua functions

-

-basic
-_G
-_VERSION
-assert
-collectgarbage
-dofile
-error
-getmetatable
-ipairs
-load
-loadfile
-next
-pairs
-pcall
-print
-rawequal
-rawget
-rawlen
-rawset
-require
-select
-setmetatable
-tonumber
-tostring
-type
-xpcall
- -

-coroutine
-coroutine.create
-coroutine.isyieldable
-coroutine.resume
-coroutine.running
-coroutine.status
-coroutine.wrap
-coroutine.yield
- -

-debug
-debug.debug
-debug.gethook
-debug.getinfo
-debug.getlocal
-debug.getmetatable
-debug.getregistry
-debug.getupvalue
-debug.getuservalue
-debug.sethook
-debug.setlocal
-debug.setmetatable
-debug.setupvalue
-debug.setuservalue
-debug.traceback
-debug.upvalueid
-debug.upvaluejoin
- -

-io
-io.close
-io.flush
-io.input
-io.lines
-io.open
-io.output
-io.popen
-io.read
-io.stderr
-io.stdin
-io.stdout
-io.tmpfile
-io.type
-io.write
- -file:close
-file:flush
-file:lines
-file:read
-file:seek
-file:setvbuf
-file:write
- -

 -

 

-

-math
-math.abs
-math.acos
-math.asin
-math.atan
-math.ceil
-math.cos
-math.deg
-math.exp
-math.floor
-math.fmod
-math.huge
-math.log
-math.max
-math.maxinteger
-math.min
-math.mininteger
-math.modf
-math.pi
-math.rad
-math.random
-math.randomseed
-math.sin
-math.sqrt
-math.tan
-math.tointeger
-math.type
-math.ult
- -

-os
-os.clock
-os.date
-os.difftime
-os.execute
-os.exit
-os.getenv
-os.remove
-os.rename
-os.setlocale
-os.time
-os.tmpname
- -

-package
-package.config
-package.cpath
-package.loaded
-package.loadlib
-package.path
-package.preload
-package.searchers
-package.searchpath
- -

-string
-string.byte
-string.char
-string.dump
-string.find
-string.format
-string.gmatch
-string.gsub
-string.len
-string.lower
-string.match
-string.pack
-string.packsize
-string.rep
-string.reverse
-string.sub
-string.unpack
-string.upper
- -

-table
-table.concat
-table.insert
-table.move
-table.pack
-table.remove
-table.sort
-table.unpack
- -

-utf8
-utf8.char
-utf8.charpattern
-utf8.codepoint
-utf8.codes
-utf8.len
-utf8.offset
- -

environment
variables

-

-LUA_CPATH
-LUA_CPATH_5_3
-LUA_INIT
-LUA_INIT_5_3
-LUA_PATH
-LUA_PATH_5_3
- -

 -

C API

-

-lua_Alloc
-lua_CFunction
-lua_Debug
-lua_Hook
-lua_Integer
-lua_KContext
-lua_KFunction
-lua_Number
-lua_Reader
-lua_State
-lua_Unsigned
-lua_Writer
- -

-lua_absindex
-lua_arith
-lua_atpanic
-lua_call
-lua_callk
-lua_checkstack
-lua_close
-lua_compare
-lua_concat
-lua_copy
-lua_createtable
-lua_dump
-lua_error
-lua_gc
-lua_getallocf
-lua_getextraspace
-lua_getfield
-lua_getglobal
-lua_gethook
-lua_gethookcount
-lua_gethookmask
-lua_geti
-lua_getinfo
-lua_getlocal
-lua_getmetatable
-lua_getstack
-lua_gettable
-lua_gettop
-lua_getupvalue
-lua_getuservalue
-lua_insert
-lua_isboolean
-lua_iscfunction
-lua_isfunction
-lua_isinteger
-lua_islightuserdata
-lua_isnil
-lua_isnone
-lua_isnoneornil
-lua_isnumber
-lua_isstring
-lua_istable
-lua_isthread
-lua_isuserdata
-lua_isyieldable
-lua_len
-lua_load
-lua_newstate
-lua_newtable
-lua_newthread
-lua_newuserdata
-lua_next
-lua_numbertointeger
-lua_pcall
-lua_pcallk
-lua_pop
-lua_pushboolean
-lua_pushcclosure
-lua_pushcfunction
-lua_pushfstring
-lua_pushglobaltable
-lua_pushinteger
-lua_pushlightuserdata
-lua_pushliteral
-lua_pushlstring
-lua_pushnil
-lua_pushnumber
-lua_pushstring
-lua_pushthread
-lua_pushvalue
-lua_pushvfstring
-lua_rawequal
-lua_rawget
-lua_rawgeti
-lua_rawgetp
-lua_rawlen
-lua_rawset
-lua_rawseti
-lua_rawsetp
-lua_register
-lua_remove
-lua_replace
-lua_resume
-lua_rotate
-lua_setallocf
-lua_setfield
-lua_setglobal
-lua_sethook
-lua_seti
-lua_setlocal
-lua_setmetatable
-lua_settable
-lua_settop
-lua_setupvalue
-lua_setuservalue
-lua_status
-lua_stringtonumber
-lua_toboolean
-lua_tocfunction
-lua_tointeger
-lua_tointegerx
-lua_tolstring
-lua_tonumber
-lua_tonumberx
-lua_topointer
-lua_tostring
-lua_tothread
-lua_touserdata
-lua_type
-lua_typename
-lua_upvalueid
-lua_upvalueindex
-lua_upvaluejoin
-lua_version
-lua_xmove
-lua_yield
-lua_yieldk
- -

 -

auxiliary library

-

-luaL_Buffer
-luaL_Reg
-luaL_Stream
- -

-luaL_addchar
-luaL_addlstring
-luaL_addsize
-luaL_addstring
-luaL_addvalue
-luaL_argcheck
-luaL_argerror
-luaL_buffinit
-luaL_buffinitsize
-luaL_callmeta
-luaL_checkany
-luaL_checkinteger
-luaL_checklstring
-luaL_checknumber
-luaL_checkoption
-luaL_checkstack
-luaL_checkstring
-luaL_checktype
-luaL_checkudata
-luaL_checkversion
-luaL_dofile
-luaL_dostring
-luaL_error
-luaL_execresult
-luaL_fileresult
-luaL_getmetafield
-luaL_getmetatable
-luaL_getsubtable
-luaL_gsub
-luaL_len
-luaL_loadbuffer
-luaL_loadbufferx
-luaL_loadfile
-luaL_loadfilex
-luaL_loadstring
-luaL_newlib
-luaL_newlibtable
-luaL_newmetatable
-luaL_newstate
-luaL_openlibs
-luaL_opt
-luaL_optinteger
-luaL_optlstring
-luaL_optnumber
-luaL_optstring
-luaL_prepbuffer
-luaL_prepbuffsize
-luaL_pushresult
-luaL_pushresultsize
-luaL_ref
-luaL_requiref
-luaL_setfuncs
-luaL_setmetatable
-luaL_testudata
-luaL_tolstring
-luaL_traceback
-luaL_typename
-luaL_unref
-luaL_where
- -

standard library

-

-luaopen_base
-luaopen_coroutine
-luaopen_debug
-luaopen_io
-luaopen_math
-luaopen_os
-luaopen_package
-luaopen_string
-luaopen_table
-luaopen_utf8
- -

constants

-

-LUA_ERRERR
-LUA_ERRFILE
-LUA_ERRGCMM
-LUA_ERRMEM
-LUA_ERRRUN
-LUA_ERRSYNTAX
-LUA_HOOKCALL
-LUA_HOOKCOUNT
-LUA_HOOKLINE
-LUA_HOOKRET
-LUA_HOOKTAILCALL
-LUA_MASKCALL
-LUA_MASKCOUNT
-LUA_MASKLINE
-LUA_MASKRET
-LUA_MAXINTEGER
-LUA_MININTEGER
-LUA_MINSTACK
-LUA_MULTRET
-LUA_NOREF
-LUA_OK
-LUA_OPADD
-LUA_OPBAND
-LUA_OPBNOT
-LUA_OPBOR
-LUA_OPBXOR
-LUA_OPDIV
-LUA_OPEQ
-LUA_OPIDIV
-LUA_OPLE
-LUA_OPLT
-LUA_OPMOD
-LUA_OPMUL
-LUA_OPPOW
-LUA_OPSHL
-LUA_OPSHR
-LUA_OPSUB
-LUA_OPUNM
-LUA_REFNIL
-LUA_REGISTRYINDEX
-LUA_RIDX_GLOBALS
-LUA_RIDX_MAINTHREAD
-LUA_TBOOLEAN
-LUA_TFUNCTION
-LUA_TLIGHTUSERDATA
-LUA_TNIL
-LUA_TNONE
-LUA_TNUMBER
-LUA_TSTRING
-LUA_TTABLE
-LUA_TTHREAD
-LUA_TUSERDATA
-LUA_USE_APICHECK
-LUA_YIELD
-LUAL_BUFFERSIZE
- -

- -

-Last update: -Thu Dec 22 18:29:39 BRST 2016 -

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interpreter -.SH SYNOPSIS -.B lua -[ -.I options -] -[ -.I script -[ -.I args -] -] -.SH DESCRIPTION -.B lua -is the standalone Lua interpreter. -It loads and executes Lua programs, -either in textual source form or -in precompiled binary form. -(Precompiled binaries are output by -.BR luac , -the Lua compiler.) -.B lua -can be used as a batch interpreter and also interactively. -.LP -The given -.I options -are handled in order and then -the Lua program in file -.I script -is loaded and executed. -The given -.I args -are available to -.I script -as strings in a global table named -.BR arg . -If no options or arguments are given, -then -.B "\-v \-i" -is assumed when the standard input is a terminal; -otherwise, -.B "\-" -is assumed. -.LP -In interactive mode, -.B lua -prompts the user, -reads lines from the standard input, -and executes them as they are read. -If the line contains an expression or list of expressions, -then the line is evaluated and the results are printed. -If a line does not contain a complete statement, -then a secondary prompt is displayed and -lines are read until a complete statement is formed or -a syntax error is found. -.LP -At the very start, -before even handling the command line, -.B lua -checks the contents of the environment variables -.B LUA_INIT_5_3 -or -.BR LUA_INIT , -in that order. -If the contents is of the form -.RI '@ filename ', -then -.I filename -is executed. -Otherwise, the string is assumed to be a Lua statement and is executed. -.SH OPTIONS -.TP -.BI \-e " stat" -execute statement -.IR stat . -.TP -.B \-i -enter interactive mode after executing -.IR script . -.TP -.BI \-l " name" -execute the equivalent of -.IB name =require(' name ') -before executing -.IR script . -.TP -.B \-v -show version information. -.TP -.B \-E -ignore environment variables. -.TP -.B \-\- -stop handling options. -.TP -.B \- -stop handling options and execute the standard input as a file. -.SH "SEE ALSO" -.BR luac (1) -.br -The documentation at lua.org, -especially section 7 of the reference manual. -.SH DIAGNOSTICS -Error messages should be self explanatory. -.SH AUTHORS -R. Ierusalimschy, -L. H. de Figueiredo, -W. Celes -.\" EOF diff --git a/deps/rcheevos/test/lua/doc/lua.css b/deps/rcheevos/test/lua/doc/lua.css deleted file mode 100644 index 5bedf7eb89..0000000000 --- a/deps/rcheevos/test/lua/doc/lua.css +++ /dev/null @@ -1,164 +0,0 @@ -html { - background-color: #F8F8F8 ; -} - -body { - background-color: #FFFFFF ; - color: #000000 ; - font-family: Helvetica, Arial, sans-serif ; - text-align: justify ; - line-height: 1.25 ; - margin: 16px auto ; - padding: 32px ; - border: solid #a0a0a0 1px ; - border-radius: 20px ; - max-width: 70em ; - width: 90% ; -} - -h1, h2, h3, h4 { - color: #000080 ; - font-family: Verdana, Geneva, sans-serif ; - font-weight: normal ; - font-style: normal ; - text-align: left ; -} - -h1 { - font-size: 28pt ; -} - -h1 img { - vertical-align: text-bottom ; -} - -h2:before { - content: "\2756" ; - padding-right: 0.5em ; -} - -a { - text-decoration: none ; -} - -a:link { - color: #000080 ; -} - -a:link:hover, a:visited:hover { - background-color: #D0D0FF ; - color: #000080 ; 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- border-spacing: 0 ; - border-collapse: collapse ; -} - -table.columns td { - vertical-align: top ; - padding: 0 ; - padding-bottom: 1em ; - text-align: justify ; - line-height: 1.25 ; -} - -p.logos a:link:hover, p.logos a:visited:hover { - background-color: inherit ; -} - -table.book { - border: none ; - border-spacing: 0 ; - border-collapse: collapse ; -} - -table.book td { - padding: 0 ; - vertical-align: top ; -} - -table.book td.cover { - padding-right: 1em ; -} - -table.book img { - border: solid #000080 1px ; -} - -table.book span { - font-size: small ; - text-align: left ; - display: block ; - margin-top: 0.25em ; -} - -img { - background-color: white ; -} diff --git a/deps/rcheevos/test/lua/doc/luac.1 b/deps/rcheevos/test/lua/doc/luac.1 deleted file mode 100644 index 33a4ed00ac..0000000000 --- a/deps/rcheevos/test/lua/doc/luac.1 +++ /dev/null @@ -1,118 +0,0 @@ -.\" $Id: luac.man,v 1.29 2011/11/16 13:53:40 lhf Exp $ -.TH LUAC 1 "$Date: 2011/11/16 13:53:40 $" -.SH NAME -luac \- Lua compiler -.SH SYNOPSIS -.B luac -[ -.I options -] [ -.I filenames -] -.SH DESCRIPTION -.B luac -is the Lua compiler. -It translates programs written in the Lua programming language -into binary files containing precompiled chunks -that can be later loaded and executed. -.LP -The main advantages of precompiling chunks are: -faster loading, -protecting source code from accidental user changes, -and -off-line syntax checking. -Precompiling does not imply faster execution -because in Lua chunks are always compiled into bytecodes before being executed. -.B luac -simply allows those bytecodes to be saved in a file for later execution. -Precompiled chunks are not necessarily smaller than the corresponding source. -The main goal in precompiling is faster loading. -.LP -In the command line, -you can mix -text files containing Lua source and -binary files containing precompiled chunks. -.B luac -produces a single output file containing the combined bytecodes -for all files given. -Executing the combined file is equivalent to executing the given files. -By default, -the output file is named -.BR luac.out , -but you can change this with the -.B \-o -option. -.LP -Precompiled chunks are -.I not -portable across different architectures. -Moreover, -the internal format of precompiled chunks -is likely to change when a new version of Lua is released. -Make sure you save the source files of all Lua programs that you precompile. -.LP -.SH OPTIONS -.TP -.B \-l -produce a listing of the compiled bytecode for Lua's virtual machine. -Listing bytecodes is useful to learn about Lua's virtual machine. -If no files are given, then -.B luac -loads -.B luac.out -and lists its contents. -Use -.B \-l \-l -for a full listing. -.TP -.BI \-o " file" -output to -.IR file , -instead of the default -.BR luac.out . -(You can use -.B "'\-'" -for standard output, -but not on platforms that open standard output in text mode.) -The output file may be one of the given files because -all files are loaded before the output file is written. -Be careful not to overwrite precious files. -.TP -.B \-p -load files but do not generate any output file. -Used mainly for syntax checking and for testing precompiled chunks: -corrupted files will probably generate errors when loaded. -If no files are given, then -.B luac -loads -.B luac.out -and tests its contents. -No messages are displayed if the file loads without errors. -.TP -.B \-s -strip debug information before writing the output file. -This saves some space in very large chunks, -but if errors occur when running a stripped chunk, -then the error messages may not contain the full information they usually do. -In particular, -line numbers and names of local variables are lost. -.TP -.B \-v -show version information. -.TP -.B \-\- -stop handling options. -.TP -.B \- -stop handling options and process standard input. -.SH "SEE ALSO" -.BR lua (1) -.br -The documentation at lua.org. -.SH DIAGNOSTICS -Error messages should be self explanatory. -.SH AUTHORS -R. Ierusalimschy, -L. H. de Figueiredo, -W. Celes -.\" EOF diff --git a/deps/rcheevos/test/lua/doc/manual.css b/deps/rcheevos/test/lua/doc/manual.css deleted file mode 100644 index aa0e677dd5..0000000000 --- a/deps/rcheevos/test/lua/doc/manual.css +++ /dev/null @@ -1,21 +0,0 @@ -h3 code { - font-family: inherit ; - font-size: inherit ; -} - -pre, code { - font-size: 12pt ; -} - -span.apii { - color: gray ; - float: right ; - font-family: inherit ; - font-style: normal ; - font-size: small ; -} - -h2:before { - content: "" ; - padding-right: 0em ; -} diff --git a/deps/rcheevos/test/lua/doc/manual.html b/deps/rcheevos/test/lua/doc/manual.html deleted file mode 100644 index 3126b5d6af..0000000000 --- a/deps/rcheevos/test/lua/doc/manual.html +++ /dev/null @@ -1,10985 +0,0 @@ - - - -Lua 5.3 Reference Manual - - - - - - - -

-Lua -Lua 5.3 Reference Manual -

- -

-by Roberto Ierusalimschy, Luiz Henrique de Figueiredo, Waldemar Celes - -

- -Copyright © 2015–2017 Lua.org, PUC-Rio. -Freely available under the terms of the -Lua license. - - -

-contents -· -index -· -other versions -
- - -

- - - - - - -

1 – Introduction

- -

-Lua is a powerful, efficient, lightweight, embeddable scripting language. -It supports procedural programming, -object-oriented programming, functional programming, -data-driven programming, and data description. - - -

-Lua combines simple procedural syntax with powerful data description -constructs based on associative arrays and extensible semantics. -Lua is dynamically typed, -runs by interpreting bytecode with a register-based -virtual machine, -and has automatic memory management with -incremental garbage collection, -making it ideal for configuration, scripting, -and rapid prototyping. - - -

-Lua is implemented as a library, written in clean C, -the common subset of Standard C and C++. -The Lua distribution includes a host program called lua, -which uses the Lua library to offer a complete, -standalone Lua interpreter, -for interactive or batch use. -Lua is intended to be used both as a powerful, lightweight, -embeddable scripting language for any program that needs one, -and as a powerful but lightweight and efficient stand-alone language. - - -

-As an extension language, Lua has no notion of a "main" program: -it works embedded in a host client, -called the embedding program or simply the host. -(Frequently, this host is the stand-alone lua program.) -The host program can invoke functions to execute a piece of Lua code, -can write and read Lua variables, -and can register C functions to be called by Lua code. -Through the use of C functions, Lua can be augmented to cope with -a wide range of different domains, -thus creating customized programming languages sharing a syntactical framework. - - -

-Lua is free software, -and is provided as usual with no guarantees, -as stated in its license. -The implementation described in this manual is available -at Lua's official web site, www.lua.org. - - -

-Like any other reference manual, -this document is dry in places. -For a discussion of the decisions behind the design of Lua, -see the technical papers available at Lua's web site. -For a detailed introduction to programming in Lua, -see Roberto's book, Programming in Lua. - - - -

2 – Basic Concepts

- -

-This section describes the basic concepts of the language. - - - -

2.1 – Values and Types

- -

-Lua is a dynamically typed language. -This means that -variables do not have types; only values do. -There are no type definitions in the language. -All values carry their own type. - - -

-All values in Lua are first-class values. -This means that all values can be stored in variables, -passed as arguments to other functions, and returned as results. - - -

-There are eight basic types in Lua: -nil, boolean, number, -string, function, userdata, -thread, and table. -The type nil has one single value, nil, -whose main property is to be different from any other value; -it usually represents the absence of a useful value. -The type boolean has two values, false and true. -Both nil and false make a condition false; -any other value makes it true. -The type number represents both -integer numbers and real (floating-point) numbers. -The type string represents immutable sequences of bytes. - -Lua is 8-bit clean: -strings can contain any 8-bit value, -including embedded zeros ('\0'). -Lua is also encoding-agnostic; -it makes no assumptions about the contents of a string. - - -

-The type number uses two internal representations, -or two subtypes, -one called integer and the other called float. -Lua has explicit rules about when each representation is used, -but it also converts between them automatically as needed (see §3.4.3). -Therefore, -the programmer may choose to mostly ignore the difference -between integers and floats -or to assume complete control over the representation of each number. -Standard Lua uses 64-bit integers and double-precision (64-bit) floats, -but you can also compile Lua so that it -uses 32-bit integers and/or single-precision (32-bit) floats. -The option with 32 bits for both integers and floats -is particularly attractive -for small machines and embedded systems. -(See macro LUA_32BITS in file luaconf.h.) - - -

-Lua can call (and manipulate) functions written in Lua and -functions written in C (see §3.4.10). -Both are represented by the type function. - - -

-The type userdata is provided to allow arbitrary C data to -be stored in Lua variables. -A userdata value represents a block of raw memory. -There are two kinds of userdata: -full userdata, -which is an object with a block of memory managed by Lua, -and light userdata, -which is simply a C pointer value. -Userdata has no predefined operations in Lua, -except assignment and identity test. -By using metatables, -the programmer can define operations for full userdata values -(see §2.4). -Userdata values cannot be created or modified in Lua, -only through the C API. -This guarantees the integrity of data owned by the host program. - - -

-The type thread represents independent threads of execution -and it is used to implement coroutines (see §2.6). -Lua threads are not related to operating-system threads. -Lua supports coroutines on all systems, -even those that do not support threads natively. - - -

-The type table implements associative arrays, -that is, arrays that can be indexed not only with numbers, -but with any Lua value except nil and NaN. -(Not a Number is a special value used to represent -undefined or unrepresentable numerical results, such as 0/0.) -Tables can be heterogeneous; -that is, they can contain values of all types (except nil). -Any key with value nil is not considered part of the table. -Conversely, any key that is not part of a table has -an associated value nil. - - -

-Tables are the sole data-structuring mechanism in Lua; -they can be used to represent ordinary arrays, lists, -symbol tables, sets, records, graphs, trees, etc. -To represent records, Lua uses the field name as an index. -The language supports this representation by -providing a.name as syntactic sugar for a["name"]. -There are several convenient ways to create tables in Lua -(see §3.4.9). - - -

-Like indices, -the values of table fields can be of any type. -In particular, -because functions are first-class values, -table fields can contain functions. -Thus tables can also carry methods (see §3.4.11). - - -

-The indexing of tables follows -the definition of raw equality in the language. -The expressions a[i] and a[j] -denote the same table element -if and only if i and j are raw equal -(that is, equal without metamethods). -In particular, floats with integral values -are equal to their respective integers -(e.g., 1.0 == 1). -To avoid ambiguities, -any float with integral value used as a key -is converted to its respective integer. -For instance, if you write a[2.0] = true, -the actual key inserted into the table will be the -integer 2. -(On the other hand, -2 and "2" are different Lua values and therefore -denote different table entries.) - - -

-Tables, functions, threads, and (full) userdata values are objects: -variables do not actually contain these values, -only references to them. -Assignment, parameter passing, and function returns -always manipulate references to such values; -these operations do not imply any kind of copy. - - -

-The library function type returns a string describing the type -of a given value (see §6.1). - - - - - -

2.2 – Environments and the Global Environment

- -

-As will be discussed in §3.2 and §3.3.3, -any reference to a free name -(that is, a name not bound to any declaration) var -is syntactically translated to _ENV.var. -Moreover, every chunk is compiled in the scope of -an external local variable named _ENV (see §3.3.2), -so _ENV itself is never a free name in a chunk. - - -

-Despite the existence of this external _ENV variable and -the translation of free names, -_ENV is a completely regular name. -In particular, -you can define new variables and parameters with that name. -Each reference to a free name uses the _ENV that is -visible at that point in the program, -following the usual visibility rules of Lua (see §3.5). - - -

-Any table used as the value of _ENV is called an environment. - - -

-Lua keeps a distinguished environment called the global environment. -This value is kept at a special index in the C registry (see §4.5). -In Lua, the global variable _G is initialized with this same value. -(_G is never used internally.) - - -

-When Lua loads a chunk, -the default value for its _ENV upvalue -is the global environment (see load). -Therefore, by default, -free names in Lua code refer to entries in the global environment -(and, therefore, they are also called global variables). -Moreover, all standard libraries are loaded in the global environment -and some functions there operate on that environment. -You can use load (or loadfile) -to load a chunk with a different environment. -(In C, you have to load the chunk and then change the value -of its first upvalue.) - - - - - -

2.3 – Error Handling

- -

-Because Lua is an embedded extension language, -all Lua actions start from C code in the host program -calling a function from the Lua library. -(When you use Lua standalone, -the lua application is the host program.) -Whenever an error occurs during -the compilation or execution of a Lua chunk, -control returns to the host, -which can take appropriate measures -(such as printing an error message). - - -

-Lua code can explicitly generate an error by calling the -error function. -If you need to catch errors in Lua, -you can use pcall or xpcall -to call a given function in protected mode. - - -

-Whenever there is an error, -an error object (also called an error message) -is propagated with information about the error. -Lua itself only generates errors whose error object is a string, -but programs may generate errors with -any value as the error object. -It is up to the Lua program or its host to handle such error objects. - - -

-When you use xpcall or lua_pcall, -you may give a message handler -to be called in case of errors. -This function is called with the original error object -and returns a new error object. -It is called before the error unwinds the stack, -so that it can gather more information about the error, -for instance by inspecting the stack and creating a stack traceback. -This message handler is still protected by the protected call; -so, an error inside the message handler -will call the message handler again. -If this loop goes on for too long, -Lua breaks it and returns an appropriate message. -(The message handler is called only for regular runtime errors. -It is not called for memory-allocation errors -nor for errors while running finalizers.) - - - - - -

2.4 – Metatables and Metamethods

- -

-Every value in Lua can have a metatable. -This metatable is an ordinary Lua table -that defines the behavior of the original value -under certain special operations. -You can change several aspects of the behavior -of operations over a value by setting specific fields in its metatable. -For instance, when a non-numeric value is the operand of an addition, -Lua checks for a function in the field "__add" of the value's metatable. -If it finds one, -Lua calls this function to perform the addition. - - -

-The key for each event in a metatable is a string -with the event name prefixed by two underscores; -the corresponding values are called metamethods. -In the previous example, the key is "__add" -and the metamethod is the function that performs the addition. - - -

-You can query the metatable of any value -using the getmetatable function. -Lua queries metamethods in metatables using a raw access (see rawget). -So, to retrieve the metamethod for event ev in object o, -Lua does the equivalent to the following code: - -

-     rawget(getmetatable(o) or {}, "__ev")
-
- -

-You can replace the metatable of tables -using the setmetatable function. -You cannot change the metatable of other types from Lua code -(except by using the debug library (§6.10)); -you should use the C API for that. - - -

-Tables and full userdata have individual metatables -(although multiple tables and userdata can share their metatables). -Values of all other types share one single metatable per type; -that is, there is one single metatable for all numbers, -one for all strings, etc. -By default, a value has no metatable, -but the string library sets a metatable for the string type (see §6.4). - - -

-A metatable controls how an object behaves in -arithmetic operations, bitwise operations, -order comparisons, concatenation, length operation, calls, and indexing. -A metatable also can define a function to be called -when a userdata or a table is garbage collected (§2.5). - - -

-For the unary operators (negation, length, and bitwise NOT), -the metamethod is computed and called with a dummy second operand, -equal to the first one. -This extra operand is only to simplify Lua's internals -(by making these operators behave like a binary operation) -and may be removed in future versions. -(For most uses this extra operand is irrelevant.) - - -

-A detailed list of events controlled by metatables is given next. -Each operation is identified by its corresponding key. - - - -

    - -
  • __add: -the addition (+) operation. -If any operand for an addition is not a number -(nor a string coercible to a number), -Lua will try to call a metamethod. -First, Lua will check the first operand (even if it is valid). -If that operand does not define a metamethod for __add, -then Lua will check the second operand. -If Lua can find a metamethod, -it calls the metamethod with the two operands as arguments, -and the result of the call -(adjusted to one value) -is the result of the operation. -Otherwise, -it raises an error. -
    • - -
  • __sub: -the subtraction (-) operation. -Behavior similar to the addition operation. -
    • - -
  • __mul: -the multiplication (*) operation. -Behavior similar to the addition operation. -
    • - -
  • __div: -the division (/) operation. -Behavior similar to the addition operation. -
    • - -
  • __mod: -the modulo (%) operation. -Behavior similar to the addition operation. -
    • - -
  • __pow: -the exponentiation (^) operation. -Behavior similar to the addition operation. -
    • - -
  • __unm: -the negation (unary -) operation. -Behavior similar to the addition operation. -
    • - -
  • __idiv: -the floor division (//) operation. -Behavior similar to the addition operation. -
    • - -
  • __band: -the bitwise AND (&) operation. -Behavior similar to the addition operation, -except that Lua will try a metamethod -if any operand is neither an integer -nor a value coercible to an integer (see §3.4.3). -
    • - -
  • __bor: -the bitwise OR (|) operation. -Behavior similar to the bitwise AND operation. -
    • - -
  • __bxor: -the bitwise exclusive OR (binary ~) operation. -Behavior similar to the bitwise AND operation. -
    • - -
  • __bnot: -the bitwise NOT (unary ~) operation. -Behavior similar to the bitwise AND operation. -
    • - -
  • __shl: -the bitwise left shift (<<) operation. -Behavior similar to the bitwise AND operation. -
    • - -
  • __shr: -the bitwise right shift (>>) operation. -Behavior similar to the bitwise AND operation. -
    • - -
  • __concat: -the concatenation (..) operation. -Behavior similar to the addition operation, -except that Lua will try a metamethod -if any operand is neither a string nor a number -(which is always coercible to a string). -
    • - -
  • __len: -the length (#) operation. -If the object is not a string, -Lua will try its metamethod. -If there is a metamethod, -Lua calls it with the object as argument, -and the result of the call -(always adjusted to one value) -is the result of the operation. -If there is no metamethod but the object is a table, -then Lua uses the table length operation (see §3.4.7). -Otherwise, Lua raises an error. -
    • - -
  • __eq: -the equal (==) operation. -Behavior similar to the addition operation, -except that Lua will try a metamethod only when the values -being compared are either both tables or both full userdata -and they are not primitively equal. -The result of the call is always converted to a boolean. -
    • - -
  • __lt: -the less than (<) operation. -Behavior similar to the addition operation, -except that Lua will try a metamethod only when the values -being compared are neither both numbers nor both strings. -The result of the call is always converted to a boolean. -
    • - -
  • __le: -the less equal (<=) operation. -Unlike other operations, -the less-equal operation can use two different events. -First, Lua looks for the __le metamethod in both operands, -like in the less than operation. -If it cannot find such a metamethod, -then it will try the __lt metamethod, -assuming that a <= b is equivalent to not (b < a). -As with the other comparison operators, -the result is always a boolean. -(This use of the __lt event can be removed in future versions; -it is also slower than a real __le metamethod.) -
    • - -
  • __index: -The indexing access table[key]. -This event happens when table is not a table or -when key is not present in table. -The metamethod is looked up in table. - - -

    -Despite the name, -the metamethod for this event can be either a function or a table. -If it is a function, -it is called with table and key as arguments, -and the result of the call -(adjusted to one value) -is the result of the operation. -If it is a table, -the final result is the result of indexing this table with key. -(This indexing is regular, not raw, -and therefore can trigger another metamethod.) -

    • - -
  • __newindex: -The indexing assignment table[key] = value. -Like the index event, -this event happens when table is not a table or -when key is not present in table. -The metamethod is looked up in table. - - -

    -Like with indexing, -the metamethod for this event can be either a function or a table. -If it is a function, -it is called with table, key, and value as arguments. -If it is a table, -Lua does an indexing assignment to this table with the same key and value. -(This assignment is regular, not raw, -and therefore can trigger another metamethod.) - - -

    -Whenever there is a __newindex metamethod, -Lua does not perform the primitive assignment. -(If necessary, -the metamethod itself can call rawset -to do the assignment.) -

    • - -
  • __call: -The call operation func(args). -This event happens when Lua tries to call a non-function value -(that is, func is not a function). -The metamethod is looked up in func. -If present, -the metamethod is called with func as its first argument, -followed by the arguments of the original call (args). -All results of the call -are the result of the operation. -(This is the only metamethod that allows multiple results.) -
    • - -
- -

-It is a good practice to add all needed metamethods to a table -before setting it as a metatable of some object. -In particular, the __gc metamethod works only when this order -is followed (see §2.5.1). - - -

-Because metatables are regular tables, -they can contain arbitrary fields, -not only the event names defined above. -Some functions in the standard library -(e.g., tostring) -use other fields in metatables for their own purposes. - - - - - -

2.5 – Garbage Collection

- -

-Lua performs automatic memory management. -This means that -you do not have to worry about allocating memory for new objects -or freeing it when the objects are no longer needed. -Lua manages memory automatically by running -a garbage collector to collect all dead objects -(that is, objects that are no longer accessible from Lua). -All memory used by Lua is subject to automatic management: -strings, tables, userdata, functions, threads, internal structures, etc. - - -

-Lua implements an incremental mark-and-sweep collector. -It uses two numbers to control its garbage-collection cycles: -the garbage-collector pause and -the garbage-collector step multiplier. -Both use percentage points as units -(e.g., a value of 100 means an internal value of 1). - - -

-The garbage-collector pause -controls how long the collector waits before starting a new cycle. -Larger values make the collector less aggressive. -Values smaller than 100 mean the collector will not wait to -start a new cycle. -A value of 200 means that the collector waits for the total memory in use -to double before starting a new cycle. - - -

-The garbage-collector step multiplier -controls the relative speed of the collector relative to -memory allocation. -Larger values make the collector more aggressive but also increase -the size of each incremental step. -You should not use values smaller than 100, -because they make the collector too slow and -can result in the collector never finishing a cycle. -The default is 200, -which means that the collector runs at "twice" -the speed of memory allocation. - - -

-If you set the step multiplier to a very large number -(larger than 10% of the maximum number of -bytes that the program may use), -the collector behaves like a stop-the-world collector. -If you then set the pause to 200, -the collector behaves as in old Lua versions, -doing a complete collection every time Lua doubles its -memory usage. - - -

-You can change these numbers by calling lua_gc in C -or collectgarbage in Lua. -You can also use these functions to control -the collector directly (e.g., stop and restart it). - - - -

2.5.1 – Garbage-Collection Metamethods

- -

-You can set garbage-collector metamethods for tables -and, using the C API, -for full userdata (see §2.4). -These metamethods are also called finalizers. -Finalizers allow you to coordinate Lua's garbage collection -with external resource management -(such as closing files, network or database connections, -or freeing your own memory). - - -

-For an object (table or userdata) to be finalized when collected, -you must mark it for finalization. - -You mark an object for finalization when you set its metatable -and the metatable has a field indexed by the string "__gc". -Note that if you set a metatable without a __gc field -and later create that field in the metatable, -the object will not be marked for finalization. - - -

-When a marked object becomes garbage, -it is not collected immediately by the garbage collector. -Instead, Lua puts it in a list. -After the collection, -Lua goes through that list. -For each object in the list, -it checks the object's __gc metamethod: -If it is a function, -Lua calls it with the object as its single argument; -if the metamethod is not a function, -Lua simply ignores it. - - -

-At the end of each garbage-collection cycle, -the finalizers for objects are called in -the reverse order that the objects were marked for finalization, -among those collected in that cycle; -that is, the first finalizer to be called is the one associated -with the object marked last in the program. -The execution of each finalizer may occur at any point during -the execution of the regular code. - - -

-Because the object being collected must still be used by the finalizer, -that object (and other objects accessible only through it) -must be resurrected by Lua. -Usually, this resurrection is transient, -and the object memory is freed in the next garbage-collection cycle. -However, if the finalizer stores the object in some global place -(e.g., a global variable), -then the resurrection is permanent. -Moreover, if the finalizer marks a finalizing object for finalization again, -its finalizer will be called again in the next cycle where the -object is unreachable. -In any case, -the object memory is freed only in a GC cycle where -the object is unreachable and not marked for finalization. - - -

-When you close a state (see lua_close), -Lua calls the finalizers of all objects marked for finalization, -following the reverse order that they were marked. -If any finalizer marks objects for collection during that phase, -these marks have no effect. - - - - - -

2.5.2 – Weak Tables

- -

-A weak table is a table whose elements are -weak references. -A weak reference is ignored by the garbage collector. -In other words, -if the only references to an object are weak references, -then the garbage collector will collect that object. - - -

-A weak table can have weak keys, weak values, or both. -A table with weak values allows the collection of its values, -but prevents the collection of its keys. -A table with both weak keys and weak values allows the collection of -both keys and values. -In any case, if either the key or the value is collected, -the whole pair is removed from the table. -The weakness of a table is controlled by the -__mode field of its metatable. -If the __mode field is a string containing the character 'k', -the keys in the table are weak. -If __mode contains 'v', -the values in the table are weak. - - -

-A table with weak keys and strong values -is also called an ephemeron table. -In an ephemeron table, -a value is considered reachable only if its key is reachable. -In particular, -if the only reference to a key comes through its value, -the pair is removed. - - -

-Any change in the weakness of a table may take effect only -at the next collect cycle. -In particular, if you change the weakness to a stronger mode, -Lua may still collect some items from that table -before the change takes effect. - - -

-Only objects that have an explicit construction -are removed from weak tables. -Values, such as numbers and light C functions, -are not subject to garbage collection, -and therefore are not removed from weak tables -(unless their associated values are collected). -Although strings are subject to garbage collection, -they do not have an explicit construction, -and therefore are not removed from weak tables. - - -

-Resurrected objects -(that is, objects being finalized -and objects accessible only through objects being finalized) -have a special behavior in weak tables. -They are removed from weak values before running their finalizers, -but are removed from weak keys only in the next collection -after running their finalizers, when such objects are actually freed. -This behavior allows the finalizer to access properties -associated with the object through weak tables. - - -

-If a weak table is among the resurrected objects in a collection cycle, -it may not be properly cleared until the next cycle. - - - - - - - -

2.6 – Coroutines

- -

-Lua supports coroutines, -also called collaborative multithreading. -A coroutine in Lua represents an independent thread of execution. -Unlike threads in multithread systems, however, -a coroutine only suspends its execution by explicitly calling -a yield function. - - -

-You create a coroutine by calling coroutine.create. -Its sole argument is a function -that is the main function of the coroutine. -The create function only creates a new coroutine and -returns a handle to it (an object of type thread); -it does not start the coroutine. - - -

-You execute a coroutine by calling coroutine.resume. -When you first call coroutine.resume, -passing as its first argument -a thread returned by coroutine.create, -the coroutine starts its execution by -calling its main function. -Extra arguments passed to coroutine.resume are passed -as arguments to that function. -After the coroutine starts running, -it runs until it terminates or yields. - - -

-A coroutine can terminate its execution in two ways: -normally, when its main function returns -(explicitly or implicitly, after the last instruction); -and abnormally, if there is an unprotected error. -In case of normal termination, -coroutine.resume returns true, -plus any values returned by the coroutine main function. -In case of errors, coroutine.resume returns false -plus an error object. - - -

-A coroutine yields by calling coroutine.yield. -When a coroutine yields, -the corresponding coroutine.resume returns immediately, -even if the yield happens inside nested function calls -(that is, not in the main function, -but in a function directly or indirectly called by the main function). -In the case of a yield, coroutine.resume also returns true, -plus any values passed to coroutine.yield. -The next time you resume the same coroutine, -it continues its execution from the point where it yielded, -with the call to coroutine.yield returning any extra -arguments passed to coroutine.resume. - - -

-Like coroutine.create, -the coroutine.wrap function also creates a coroutine, -but instead of returning the coroutine itself, -it returns a function that, when called, resumes the coroutine. -Any arguments passed to this function -go as extra arguments to coroutine.resume. -coroutine.wrap returns all the values returned by coroutine.resume, -except the first one (the boolean error code). -Unlike coroutine.resume, -coroutine.wrap does not catch errors; -any error is propagated to the caller. - - -

-As an example of how coroutines work, -consider the following code: - -

-     function foo (a)
-       print("foo", a)
-       return coroutine.yield(2*a)
-     end
-     
-     co = coroutine.create(function (a,b)
-           print("co-body", a, b)
-           local r = foo(a+1)
-           print("co-body", r)
-           local r, s = coroutine.yield(a+b, a-b)
-           print("co-body", r, s)
-           return b, "end"
-     end)
-     
-     print("main", coroutine.resume(co, 1, 10))
-     print("main", coroutine.resume(co, "r"))
-     print("main", coroutine.resume(co, "x", "y"))
-     print("main", coroutine.resume(co, "x", "y"))
-

-When you run it, it produces the following output: - -

-     co-body 1       10
-     foo     2
-     main    true    4
-     co-body r
-     main    true    11      -9
-     co-body x       y
-     main    true    10      end
-     main    false   cannot resume dead coroutine
-
- -

-You can also create and manipulate coroutines through the C API: -see functions lua_newthread, lua_resume, -and lua_yield. - - - - - -

3 – The Language

- -

-This section describes the lexis, the syntax, and the semantics of Lua. -In other words, -this section describes -which tokens are valid, -how they can be combined, -and what their combinations mean. - - -

-Language constructs will be explained using the usual extended BNF notation, -in which -{a} means 0 or more a's, and -[a] means an optional a. -Non-terminals are shown like non-terminal, -keywords are shown like kword, -and other terminal symbols are shown like ‘=’. -The complete syntax of Lua can be found in §9 -at the end of this manual. - - - -

3.1 – Lexical Conventions

- -

-Lua is a free-form language. -It ignores spaces (including new lines) and comments -between lexical elements (tokens), -except as delimiters between names and keywords. - - -

-Names -(also called identifiers) -in Lua can be any string of letters, -digits, and underscores, -not beginning with a digit and -not being a reserved word. -Identifiers are used to name variables, table fields, and labels. - - -

-The following keywords are reserved -and cannot be used as names: - - -

-     and       break     do        else      elseif    end
-     false     for       function  goto      if        in
-     local     nil       not       or        repeat    return
-     then      true      until     while
-
- -

-Lua is a case-sensitive language: -and is a reserved word, but And and AND -are two different, valid names. -As a convention, -programs should avoid creating -names that start with an underscore followed by -one or more uppercase letters (such as _VERSION). - - -

-The following strings denote other tokens: - -

-     +     -     *     /     %     ^     #
-     &     ~     |     <<    >>    //
-     ==    ~=    <=    >=    <     >     =
-     (     )     {     }     [     ]     ::
-     ;     :     ,     .     ..    ...
-
- -

-A short literal string -can be delimited by matching single or double quotes, -and can contain the following C-like escape sequences: -'\a' (bell), -'\b' (backspace), -'\f' (form feed), -'\n' (newline), -'\r' (carriage return), -'\t' (horizontal tab), -'\v' (vertical tab), -'\\' (backslash), -'\"' (quotation mark [double quote]), -and '\'' (apostrophe [single quote]). -A backslash followed by a line break -results in a newline in the string. -The escape sequence '\z' skips the following span -of white-space characters, -including line breaks; -it is particularly useful to break and indent a long literal string -into multiple lines without adding the newlines and spaces -into the string contents. -A short literal string cannot contain unescaped line breaks -nor escapes not forming a valid escape sequence. - - -

-We can specify any byte in a short literal string by its numeric value -(including embedded zeros). -This can be done -with the escape sequence \xXX, -where XX is a sequence of exactly two hexadecimal digits, -or with the escape sequence \ddd, -where ddd is a sequence of up to three decimal digits. -(Note that if a decimal escape sequence is to be followed by a digit, -it must be expressed using exactly three digits.) - - -

-The UTF-8 encoding of a Unicode character -can be inserted in a literal string with -the escape sequence \u{XXX} -(note the mandatory enclosing brackets), -where XXX is a sequence of one or more hexadecimal digits -representing the character code point. - - -

-Literal strings can also be defined using a long format -enclosed by long brackets. -We define an opening long bracket of level n as an opening -square bracket followed by n equal signs followed by another -opening square bracket. -So, an opening long bracket of level 0 is written as [[, -an opening long bracket of level 1 is written as [=[, -and so on. -A closing long bracket is defined similarly; -for instance, -a closing long bracket of level 4 is written as ]====]. -A long literal starts with an opening long bracket of any level and -ends at the first closing long bracket of the same level. -It can contain any text except a closing bracket of the same level. -Literals in this bracketed form can run for several lines, -do not interpret any escape sequences, -and ignore long brackets of any other level. -Any kind of end-of-line sequence -(carriage return, newline, carriage return followed by newline, -or newline followed by carriage return) -is converted to a simple newline. - - -

-For convenience, -when the opening long bracket is immediately followed by a newline, -the newline is not included in the string. -As an example, in a system using ASCII -(in which 'a' is coded as 97, -newline is coded as 10, and '1' is coded as 49), -the five literal strings below denote the same string: - -

-     a = 'alo\n123"'
-     a = "alo\n123\""
-     a = '\97lo\10\04923"'
-     a = [[alo
-     123"]]
-     a = [==[
-     alo
-     123"]==]
-
- -

-Any byte in a literal string not -explicitly affected by the previous rules represents itself. -However, Lua opens files for parsing in text mode, -and the system file functions may have problems with -some control characters. -So, it is safer to represent -non-text data as a quoted literal with -explicit escape sequences for the non-text characters. - - -

-A numeric constant (or numeral) -can be written with an optional fractional part -and an optional decimal exponent, -marked by a letter 'e' or 'E'. -Lua also accepts hexadecimal constants, -which start with 0x or 0X. -Hexadecimal constants also accept an optional fractional part -plus an optional binary exponent, -marked by a letter 'p' or 'P'. -A numeric constant with a radix point or an exponent -denotes a float; -otherwise, -if its value fits in an integer, -it denotes an integer. -Examples of valid integer constants are - -

-     3   345   0xff   0xBEBADA
-

-Examples of valid float constants are - -

-     3.0     3.1416     314.16e-2     0.31416E1     34e1
-     0x0.1E  0xA23p-4   0X1.921FB54442D18P+1
-
- -

-A comment starts with a double hyphen (--) -anywhere outside a string. -If the text immediately after -- is not an opening long bracket, -the comment is a short comment, -which runs until the end of the line. -Otherwise, it is a long comment, -which runs until the corresponding closing long bracket. -Long comments are frequently used to disable code temporarily. - - - - - -

3.2 – Variables

- -

-Variables are places that store values. -There are three kinds of variables in Lua: -global variables, local variables, and table fields. - - -

-A single name can denote a global variable or a local variable -(or a function's formal parameter, -which is a particular kind of local variable): - -

-	var ::= Name
-

-Name denotes identifiers, as defined in §3.1. - - -

-Any variable name is assumed to be global unless explicitly declared -as a local (see §3.3.7). -Local variables are lexically scoped: -local variables can be freely accessed by functions -defined inside their scope (see §3.5). - - -

-Before the first assignment to a variable, its value is nil. - - -

-Square brackets are used to index a table: - -

-	var ::= prefixexp ‘[’ exp ‘]’
-

-The meaning of accesses to table fields can be changed via metatables. -An access to an indexed variable t[i] is equivalent to -a call gettable_event(t,i). -(See §2.4 for a complete description of the -gettable_event function. -This function is not defined or callable in Lua. -We use it here only for explanatory purposes.) - - -

-The syntax var.Name is just syntactic sugar for -var["Name"]: - -

-	var ::= prefixexp ‘.’ Name
-
- -

-An access to a global variable x -is equivalent to _ENV.x. -Due to the way that chunks are compiled, -_ENV is never a global name (see §2.2). - - - - - -

3.3 – Statements

- -

-Lua supports an almost conventional set of statements, -similar to those in Pascal or C. -This set includes -assignments, control structures, function calls, -and variable declarations. - - - -

3.3.1 – Blocks

- -

-A block is a list of statements, -which are executed sequentially: - -

-	block ::= {stat}
-

-Lua has empty statements -that allow you to separate statements with semicolons, -start a block with a semicolon -or write two semicolons in sequence: - -

-	stat ::= ‘;’
-
- -

-Function calls and assignments -can start with an open parenthesis. -This possibility leads to an ambiguity in Lua's grammar. -Consider the following fragment: - -

-     a = b + c
-     (print or io.write)('done')
-

-The grammar could see it in two ways: - -

-     a = b + c(print or io.write)('done')
-     
-     a = b + c; (print or io.write)('done')
-

-The current parser always sees such constructions -in the first way, -interpreting the open parenthesis -as the start of the arguments to a call. -To avoid this ambiguity, -it is a good practice to always precede with a semicolon -statements that start with a parenthesis: - -

-     ;(print or io.write)('done')
-
- -

-A block can be explicitly delimited to produce a single statement: - -

-	stat ::= do block end
-

-Explicit blocks are useful -to control the scope of variable declarations. -Explicit blocks are also sometimes used to -add a return statement in the middle -of another block (see §3.3.4). - - - - - -

3.3.2 – Chunks

- -

-The unit of compilation of Lua is called a chunk. -Syntactically, -a chunk is simply a block: - -

-	chunk ::= block
-
- -

-Lua handles a chunk as the body of an anonymous function -with a variable number of arguments -(see §3.4.11). -As such, chunks can define local variables, -receive arguments, and return values. -Moreover, such anonymous function is compiled as in the -scope of an external local variable called _ENV (see §2.2). -The resulting function always has _ENV as its only upvalue, -even if it does not use that variable. - - -

-A chunk can be stored in a file or in a string inside the host program. -To execute a chunk, -Lua first loads it, -precompiling the chunk's code into instructions for a virtual machine, -and then Lua executes the compiled code -with an interpreter for the virtual machine. - - -

-Chunks can also be precompiled into binary form; -see program luac and function string.dump for details. -Programs in source and compiled forms are interchangeable; -Lua automatically detects the file type and acts accordingly (see load). - - - - - -

3.3.3 – Assignment

- -

-Lua allows multiple assignments. -Therefore, the syntax for assignment -defines a list of variables on the left side -and a list of expressions on the right side. -The elements in both lists are separated by commas: - -

-	stat ::= varlist ‘=’ explist
-	varlist ::= var {‘,’ var}
-	explist ::= exp {‘,’ exp}
-

-Expressions are discussed in §3.4. - - -

-Before the assignment, -the list of values is adjusted to the length of -the list of variables. -If there are more values than needed, -the excess values are thrown away. -If there are fewer values than needed, -the list is extended with as many nil's as needed. -If the list of expressions ends with a function call, -then all values returned by that call enter the list of values, -before the adjustment -(except when the call is enclosed in parentheses; see §3.4). - - -

-The assignment statement first evaluates all its expressions -and only then the assignments are performed. -Thus the code - -

-     i = 3
-     i, a[i] = i+1, 20
-

-sets a[3] to 20, without affecting a[4] -because the i in a[i] is evaluated (to 3) -before it is assigned 4. -Similarly, the line - -

-     x, y = y, x
-

-exchanges the values of x and y, -and - -

-     x, y, z = y, z, x
-

-cyclically permutes the values of x, y, and z. - - -

-The meaning of assignments to global variables -and table fields can be changed via metatables. -An assignment to an indexed variable t[i] = val is equivalent to -settable_event(t,i,val). -(See §2.4 for a complete description of the -settable_event function. -This function is not defined or callable in Lua. -We use it here only for explanatory purposes.) - - -

-An assignment to a global name x = val -is equivalent to the assignment -_ENV.x = val (see §2.2). - - - - - -

3.3.4 – Control Structures

-The control structures -if, while, and repeat have the usual meaning and -familiar syntax: - - - - -

-	stat ::= while exp do block end
-	stat ::= repeat block until exp
-	stat ::= if exp then block {elseif exp then block} [else block] end
-

-Lua also has a for statement, in two flavors (see §3.3.5). - - -

-The condition expression of a -control structure can return any value. -Both false and nil are considered false. -All values different from nil and false are considered true -(in particular, the number 0 and the empty string are also true). - - -

-In the repeat–until loop, -the inner block does not end at the until keyword, -but only after the condition. -So, the condition can refer to local variables -declared inside the loop block. - - -

-The goto statement transfers the program control to a label. -For syntactical reasons, -labels in Lua are considered statements too: - - - -

-	stat ::= goto Name
-	stat ::= label
-	label ::= ‘::’ Name ‘::’
-
- -

-A label is visible in the entire block where it is defined, -except -inside nested blocks where a label with the same name is defined and -inside nested functions. -A goto may jump to any visible label as long as it does not -enter into the scope of a local variable. - - -

-Labels and empty statements are called void statements, -as they perform no actions. - - -

-The break statement terminates the execution of a -while, repeat, or for loop, -skipping to the next statement after the loop: - - -

-	stat ::= break
-

-A break ends the innermost enclosing loop. - - -

-The return statement is used to return values -from a function or a chunk -(which is an anonymous function). - -Functions can return more than one value, -so the syntax for the return statement is - -

-	stat ::= return [explist] [‘;’]
-
- -

-The return statement can only be written -as the last statement of a block. -If it is really necessary to return in the middle of a block, -then an explicit inner block can be used, -as in the idiom do return end, -because now return is the last statement in its (inner) block. - - - - - -

3.3.5 – For Statement

- -

- -The for statement has two forms: -one numerical and one generic. - - -

-The numerical for loop repeats a block of code while a -control variable runs through an arithmetic progression. -It has the following syntax: - -

-	stat ::= for Name ‘=’ exp ‘,’ exp [‘,’ exp] do block end
-

-The block is repeated for name starting at the value of -the first exp, until it passes the second exp by steps of the -third exp. -More precisely, a for statement like - -

-     for v = e1, e2, e3 do block end
-

-is equivalent to the code: - -

-     do
-       local var, limit, step = tonumber(e1), tonumber(e2), tonumber(e3)
-       if not (var and limit and step) then error() end
-       var = var - step
-       while true do
-         var = var + step
-         if (step >= 0 and var > limit) or (step < 0 and var < limit) then
-           break
-         end
-         local v = var
-         block
-       end
-     end
-
- -

-Note the following: - -

    - -
  • -All three control expressions are evaluated only once, -before the loop starts. -They must all result in numbers. -
    • - -
  • -var, limit, and step are invisible variables. -The names shown here are for explanatory purposes only. -
    • - -
  • -If the third expression (the step) is absent, -then a step of 1 is used. -
    • - -
  • -You can use break and goto to exit a for loop. -
    • - -
  • -The loop variable v is local to the loop body. -If you need its value after the loop, -assign it to another variable before exiting the loop. -
    • - -
- -

-The generic for statement works over functions, -called iterators. -On each iteration, the iterator function is called to produce a new value, -stopping when this new value is nil. -The generic for loop has the following syntax: - -

-	stat ::= for namelist in explist do block end
-	namelist ::= Name {‘,’ Name}
-

-A for statement like - -

-     for var_1, ···, var_n in explist do block end
-

-is equivalent to the code: - -

-     do
-       local f, s, var = explist
-       while true do
-         local var_1, ···, var_n = f(s, var)
-         if var_1 == nil then break end
-         var = var_1
-         block
-       end
-     end
-

-Note the following: - -

    - -
  • -explist is evaluated only once. -Its results are an iterator function, -a state, -and an initial value for the first iterator variable. -
    • - -
  • -f, s, and var are invisible variables. -The names are here for explanatory purposes only. -
    • - -
  • -You can use break to exit a for loop. -
    • - -
  • -The loop variables var_i are local to the loop; -you cannot use their values after the for ends. -If you need these values, -then assign them to other variables before breaking or exiting the loop. -
    • - -
- - - - -

3.3.6 – Function Calls as Statements

-To allow possible side-effects, -function calls can be executed as statements: - -

-	stat ::= functioncall
-

-In this case, all returned values are thrown away. -Function calls are explained in §3.4.10. - - - - - -

3.3.7 – Local Declarations

-Local variables can be declared anywhere inside a block. -The declaration can include an initial assignment: - -

-	stat ::= local namelist [‘=’ explist]
-

-If present, an initial assignment has the same semantics -of a multiple assignment (see §3.3.3). -Otherwise, all variables are initialized with nil. - - -

-A chunk is also a block (see §3.3.2), -and so local variables can be declared in a chunk outside any explicit block. - - -

-The visibility rules for local variables are explained in §3.5. - - - - - - - -

3.4 – Expressions

- -

-The basic expressions in Lua are the following: - -

-	exp ::= prefixexp
-	exp ::= nil | false | true
-	exp ::= Numeral
-	exp ::= LiteralString
-	exp ::= functiondef
-	exp ::= tableconstructor
-	exp ::= ‘...’
-	exp ::= exp binop exp
-	exp ::= unop exp
-	prefixexp ::= var | functioncall | ‘(’ exp ‘)’
-
- -

-Numerals and literal strings are explained in §3.1; -variables are explained in §3.2; -function definitions are explained in §3.4.11; -function calls are explained in §3.4.10; -table constructors are explained in §3.4.9. -Vararg expressions, -denoted by three dots ('...'), can only be used when -directly inside a vararg function; -they are explained in §3.4.11. - - -

-Binary operators comprise arithmetic operators (see §3.4.1), -bitwise operators (see §3.4.2), -relational operators (see §3.4.4), logical operators (see §3.4.5), -and the concatenation operator (see §3.4.6). -Unary operators comprise the unary minus (see §3.4.1), -the unary bitwise NOT (see §3.4.2), -the unary logical not (see §3.4.5), -and the unary length operator (see §3.4.7). - - -

-Both function calls and vararg expressions can result in multiple values. -If a function call is used as a statement (see §3.3.6), -then its return list is adjusted to zero elements, -thus discarding all returned values. -If an expression is used as the last (or the only) element -of a list of expressions, -then no adjustment is made -(unless the expression is enclosed in parentheses). -In all other contexts, -Lua adjusts the result list to one element, -either discarding all values except the first one -or adding a single nil if there are no values. - - -

-Here are some examples: - -

-     f()                -- adjusted to 0 results
-     g(f(), x)          -- f() is adjusted to 1 result
-     g(x, f())          -- g gets x plus all results from f()
-     a,b,c = f(), x     -- f() is adjusted to 1 result (c gets nil)
-     a,b = ...          -- a gets the first vararg parameter, b gets
-                        -- the second (both a and b can get nil if there
-                        -- is no corresponding vararg parameter)
-     
-     a,b,c = x, f()     -- f() is adjusted to 2 results
-     a,b,c = f()        -- f() is adjusted to 3 results
-     return f()         -- returns all results from f()
-     return ...         -- returns all received vararg parameters
-     return x,y,f()     -- returns x, y, and all results from f()
-     {f()}              -- creates a list with all results from f()
-     {...}              -- creates a list with all vararg parameters
-     {f(), nil}         -- f() is adjusted to 1 result
-
- -

-Any expression enclosed in parentheses always results in only one value. -Thus, -(f(x,y,z)) is always a single value, -even if f returns several values. -(The value of (f(x,y,z)) is the first value returned by f -or nil if f does not return any values.) - - - -

3.4.1 – Arithmetic Operators

-Lua supports the following arithmetic operators: - -

    -
  • +: addition
    • -
  • -: subtraction
    • -
  • *: multiplication
    • -
  • /: float division
    • -
  • //: floor division
    • -
  • %: modulo
    • -
  • ^: exponentiation
    • -
  • -: unary minus
    • -
- -

-With the exception of exponentiation and float division, -the arithmetic operators work as follows: -If both operands are integers, -the operation is performed over integers and the result is an integer. -Otherwise, if both operands are numbers -or strings that can be converted to -numbers (see §3.4.3), -then they are converted to floats, -the operation is performed following the usual rules -for floating-point arithmetic -(usually the IEEE 754 standard), -and the result is a float. - - -

-Exponentiation and float division (/) -always convert their operands to floats -and the result is always a float. -Exponentiation uses the ISO C function pow, -so that it works for non-integer exponents too. - - -

-Floor division (//) is a division -that rounds the quotient towards minus infinity, -that is, the floor of the division of its operands. - - -

-Modulo is defined as the remainder of a division -that rounds the quotient towards minus infinity (floor division). - - -

-In case of overflows in integer arithmetic, -all operations wrap around, -according to the usual rules of two-complement arithmetic. -(In other words, -they return the unique representable integer -that is equal modulo 264 to the mathematical result.) - - - -

3.4.2 – Bitwise Operators

-Lua supports the following bitwise operators: - -

    -
  • &: bitwise AND
    • -
  • |: bitwise OR
    • -
  • ~: bitwise exclusive OR
    • -
  • >>: right shift
    • -
  • <<: left shift
    • -
  • ~: unary bitwise NOT
    • -
- -

-All bitwise operations convert its operands to integers -(see §3.4.3), -operate on all bits of those integers, -and result in an integer. - - -

-Both right and left shifts fill the vacant bits with zeros. -Negative displacements shift to the other direction; -displacements with absolute values equal to or higher than -the number of bits in an integer -result in zero (as all bits are shifted out). - - - - - -

3.4.3 – Coercions and Conversions

-Lua provides some automatic conversions between some -types and representations at run time. -Bitwise operators always convert float operands to integers. -Exponentiation and float division -always convert integer operands to floats. -All other arithmetic operations applied to mixed numbers -(integers and floats) convert the integer operand to a float; -this is called the usual rule. -The C API also converts both integers to floats and -floats to integers, as needed. -Moreover, string concatenation accepts numbers as arguments, -besides strings. - - -

-Lua also converts strings to numbers, -whenever a number is expected. - - -

-In a conversion from integer to float, -if the integer value has an exact representation as a float, -that is the result. -Otherwise, -the conversion gets the nearest higher or -the nearest lower representable value. -This kind of conversion never fails. - - -

-The conversion from float to integer -checks whether the float has an exact representation as an integer -(that is, the float has an integral value and -it is in the range of integer representation). -If it does, that representation is the result. -Otherwise, the conversion fails. - - -

-The conversion from strings to numbers goes as follows: -First, the string is converted to an integer or a float, -following its syntax and the rules of the Lua lexer. -(The string may have also leading and trailing spaces and a sign.) -Then, the resulting number (float or integer) -is converted to the type (float or integer) required by the context -(e.g., the operation that forced the conversion). - - -

-All conversions from strings to numbers -accept both a dot and the current locale mark -as the radix character. -(The Lua lexer, however, accepts only a dot.) - - -

-The conversion from numbers to strings uses a -non-specified human-readable format. -For complete control over how numbers are converted to strings, -use the format function from the string library -(see string.format). - - - - - -

3.4.4 – Relational Operators

-Lua supports the following relational operators: - -

    -
  • ==: equality
    • -
  • ~=: inequality
    • -
  • <: less than
    • -
  • >: greater than
    • -
  • <=: less or equal
    • -
  • >=: greater or equal
    • -

-These operators always result in false or true. - - -

-Equality (==) first compares the type of its operands. -If the types are different, then the result is false. -Otherwise, the values of the operands are compared. -Strings are compared in the obvious way. -Numbers are equal if they denote the same mathematical value. - - -

-Tables, userdata, and threads -are compared by reference: -two objects are considered equal only if they are the same object. -Every time you create a new object -(a table, userdata, or thread), -this new object is different from any previously existing object. -Closures with the same reference are always equal. -Closures with any detectable difference -(different behavior, different definition) are always different. - - -

-You can change the way that Lua compares tables and userdata -by using the "eq" metamethod (see §2.4). - - -

-Equality comparisons do not convert strings to numbers -or vice versa. -Thus, "0"==0 evaluates to false, -and t[0] and t["0"] denote different -entries in a table. - - -

-The operator ~= is exactly the negation of equality (==). - - -

-The order operators work as follows. -If both arguments are numbers, -then they are compared according to their mathematical values -(regardless of their subtypes). -Otherwise, if both arguments are strings, -then their values are compared according to the current locale. -Otherwise, Lua tries to call the "lt" or the "le" -metamethod (see §2.4). -A comparison a > b is translated to b < a -and a >= b is translated to b <= a. - - -

-Following the IEEE 754 standard, -NaN is considered neither smaller than, -nor equal to, nor greater than any value (including itself). - - - - - -

3.4.5 – Logical Operators

-The logical operators in Lua are -and, or, and not. -Like the control structures (see §3.3.4), -all logical operators consider both false and nil as false -and anything else as true. - - -

-The negation operator not always returns false or true. -The conjunction operator and returns its first argument -if this value is false or nil; -otherwise, and returns its second argument. -The disjunction operator or returns its first argument -if this value is different from nil and false; -otherwise, or returns its second argument. -Both and and or use short-circuit evaluation; -that is, -the second operand is evaluated only if necessary. -Here are some examples: - -

-     10 or 20            --> 10
-     10 or error()       --> 10
-     nil or "a"          --> "a"
-     nil and 10          --> nil
-     false and error()   --> false
-     false and nil       --> false
-     false or nil        --> nil
-     10 and 20           --> 20
-

-(In this manual, ---> indicates the result of the preceding expression.) - - - - - -

3.4.6 – Concatenation

-The string concatenation operator in Lua is -denoted by two dots ('..'). -If both operands are strings or numbers, then they are converted to -strings according to the rules described in §3.4.3. -Otherwise, the __concat metamethod is called (see §2.4). - - - - - -

3.4.7 – The Length Operator

- -

-The length operator is denoted by the unary prefix operator #. - - -

-The length of a string is its number of bytes -(that is, the usual meaning of string length when each -character is one byte). - - -

-The length operator applied on a table -returns a border in that table. -A border in a table t is any natural number -that satisfies the following condition: - -

-     (border == 0 or t[border] ~= nil) and t[border + 1] == nil
-

-In words, -a border is any (natural) index in a table -where a non-nil value is followed by a nil value -(or zero, when index 1 is nil). - - -

-A table with exactly one border is called a sequence. -For instance, the table {10, 20, 30, 40, 50} is a sequence, -as it has only one border (5). -The table {10, 20, 30, nil, 50} has two borders (3 and 5), -and therefore it is not a sequence. -The table {nil, 20, 30, nil, nil, 60, nil} -has three borders (0, 3, and 6), -so it is not a sequence, too. -The table {} is a sequence with border 0. -Note that non-natural keys do not interfere -with whether a table is a sequence. - - -

-When t is a sequence, -#t returns its only border, -which corresponds to the intuitive notion of the length of the sequence. -When t is not a sequence, -#t can return any of its borders. -(The exact one depends on details of -the internal representation of the table, -which in turn can depend on how the table was populated and -the memory addresses of its non-numeric keys.) - - -

-The computation of the length of a table -has a guaranteed worst time of O(log n), -where n is the largest natural key in the table. - - -

-A program can modify the behavior of the length operator for -any value but strings through the __len metamethod (see §2.4). - - - - - -

3.4.8 – Precedence

-Operator precedence in Lua follows the table below, -from lower to higher priority: - -

-     or
-     and
-     <     >     <=    >=    ~=    ==
-     |
-     ~
-     &
-     <<    >>
-     ..
-     +     -
-     *     /     //    %
-     unary operators (not   #     -     ~)
-     ^
-

-As usual, -you can use parentheses to change the precedences of an expression. -The concatenation ('..') and exponentiation ('^') -operators are right associative. -All other binary operators are left associative. - - - - - -

3.4.9 – Table Constructors

-Table constructors are expressions that create tables. -Every time a constructor is evaluated, a new table is created. -A constructor can be used to create an empty table -or to create a table and initialize some of its fields. -The general syntax for constructors is - -

-	tableconstructor ::= ‘{’ [fieldlist] ‘}’
-	fieldlist ::= field {fieldsep field} [fieldsep]
-	field ::= ‘[’ exp ‘]’ ‘=’ exp | Name ‘=’ exp | exp
-	fieldsep ::= ‘,’ | ‘;’
-
- -

-Each field of the form [exp1] = exp2 adds to the new table an entry -with key exp1 and value exp2. -A field of the form name = exp is equivalent to -["name"] = exp. -Finally, fields of the form exp are equivalent to -[i] = exp, where i are consecutive integers -starting with 1. -Fields in the other formats do not affect this counting. -For example, - -

-     a = { [f(1)] = g; "x", "y"; x = 1, f(x), [30] = 23; 45 }
-

-is equivalent to - -

-     do
-       local t = {}
-       t[f(1)] = g
-       t[1] = "x"         -- 1st exp
-       t[2] = "y"         -- 2nd exp
-       t.x = 1            -- t["x"] = 1
-       t[3] = f(x)        -- 3rd exp
-       t[30] = 23
-       t[4] = 45          -- 4th exp
-       a = t
-     end
-
- -

-The order of the assignments in a constructor is undefined. -(This order would be relevant only when there are repeated keys.) - - -

-If the last field in the list has the form exp -and the expression is a function call or a vararg expression, -then all values returned by this expression enter the list consecutively -(see §3.4.10). - - -

-The field list can have an optional trailing separator, -as a convenience for machine-generated code. - - - - - -

3.4.10 – Function Calls

-A function call in Lua has the following syntax: - -

-	functioncall ::= prefixexp args
-

-In a function call, -first prefixexp and args are evaluated. -If the value of prefixexp has type function, -then this function is called -with the given arguments. -Otherwise, the prefixexp "call" metamethod is called, -having as first parameter the value of prefixexp, -followed by the original call arguments -(see §2.4). - - -

-The form - -

-	functioncall ::= prefixexp ‘:’ Name args
-

-can be used to call "methods". -A call v:name(args) -is syntactic sugar for v.name(v,args), -except that v is evaluated only once. - - -

-Arguments have the following syntax: - -

-	args ::= ‘(’ [explist] ‘)’
-	args ::= tableconstructor
-	args ::= LiteralString
-

-All argument expressions are evaluated before the call. -A call of the form f{fields} is -syntactic sugar for f({fields}); -that is, the argument list is a single new table. -A call of the form f'string' -(or f"string" or f[[string]]) -is syntactic sugar for f('string'); -that is, the argument list is a single literal string. - - -

-A call of the form return functioncall is called -a tail call. -Lua implements proper tail calls -(or proper tail recursion): -in a tail call, -the called function reuses the stack entry of the calling function. -Therefore, there is no limit on the number of nested tail calls that -a program can execute. -However, a tail call erases any debug information about the -calling function. -Note that a tail call only happens with a particular syntax, -where the return has one single function call as argument; -this syntax makes the calling function return exactly -the returns of the called function. -So, none of the following examples are tail calls: - -

-     return (f(x))        -- results adjusted to 1
-     return 2 * f(x)
-     return x, f(x)       -- additional results
-     f(x); return         -- results discarded
-     return x or f(x)     -- results adjusted to 1
-
- - - - -

3.4.11 – Function Definitions

- -

-The syntax for function definition is - -

-	functiondef ::= function funcbody
-	funcbody ::= ‘(’ [parlist] ‘)’ block end
-
- -

-The following syntactic sugar simplifies function definitions: - -

-	stat ::= function funcname funcbody
-	stat ::= local function Name funcbody
-	funcname ::= Name {‘.’ Name} [‘:’ Name]
-

-The statement - -

-     function f () body end
-

-translates to - -

-     f = function () body end
-

-The statement - -

-     function t.a.b.c.f () body end
-

-translates to - -

-     t.a.b.c.f = function () body end
-

-The statement - -

-     local function f () body end
-

-translates to - -

-     local f; f = function () body end
-

-not to - -

-     local f = function () body end
-

-(This only makes a difference when the body of the function -contains references to f.) - - -

-A function definition is an executable expression, -whose value has type function. -When Lua precompiles a chunk, -all its function bodies are precompiled too. -Then, whenever Lua executes the function definition, -the function is instantiated (or closed). -This function instance (or closure) -is the final value of the expression. - - -

-Parameters act as local variables that are -initialized with the argument values: - -

-	parlist ::= namelist [‘,’ ‘...’] | ‘...’
-

-When a function is called, -the list of arguments is adjusted to -the length of the list of parameters, -unless the function is a vararg function, -which is indicated by three dots ('...') -at the end of its parameter list. -A vararg function does not adjust its argument list; -instead, it collects all extra arguments and supplies them -to the function through a vararg expression, -which is also written as three dots. -The value of this expression is a list of all actual extra arguments, -similar to a function with multiple results. -If a vararg expression is used inside another expression -or in the middle of a list of expressions, -then its return list is adjusted to one element. -If the expression is used as the last element of a list of expressions, -then no adjustment is made -(unless that last expression is enclosed in parentheses). - - -

-As an example, consider the following definitions: - -

-     function f(a, b) end
-     function g(a, b, ...) end
-     function r() return 1,2,3 end
-

-Then, we have the following mapping from arguments to parameters and -to the vararg expression: - -

-     CALL            PARAMETERS
-     
-     f(3)             a=3, b=nil
-     f(3, 4)          a=3, b=4
-     f(3, 4, 5)       a=3, b=4
-     f(r(), 10)       a=1, b=10
-     f(r())           a=1, b=2
-     
-     g(3)             a=3, b=nil, ... -->  (nothing)
-     g(3, 4)          a=3, b=4,   ... -->  (nothing)
-     g(3, 4, 5, 8)    a=3, b=4,   ... -->  5  8
-     g(5, r())        a=5, b=1,   ... -->  2  3
-
- -

-Results are returned using the return statement (see §3.3.4). -If control reaches the end of a function -without encountering a return statement, -then the function returns with no results. - - -

- -There is a system-dependent limit on the number of values -that a function may return. -This limit is guaranteed to be larger than 1000. - - -

-The colon syntax -is used for defining methods, -that is, functions that have an implicit extra parameter self. -Thus, the statement - -

-     function t.a.b.c:f (params) body end
-

-is syntactic sugar for - -

-     t.a.b.c.f = function (self, params) body end
-
- - - - - - -

3.5 – Visibility Rules

- -

- -Lua is a lexically scoped language. -The scope of a local variable begins at the first statement after -its declaration and lasts until the last non-void statement -of the innermost block that includes the declaration. -Consider the following example: - -

-     x = 10                -- global variable
-     do                    -- new block
-       local x = x         -- new 'x', with value 10
-       print(x)            --> 10
-       x = x+1
-       do                  -- another block
-         local x = x+1     -- another 'x'
-         print(x)          --> 12
-       end
-       print(x)            --> 11
-     end
-     print(x)              --> 10  (the global one)
-
- -

-Notice that, in a declaration like local x = x, -the new x being declared is not in scope yet, -and so the second x refers to the outside variable. - - -

-Because of the lexical scoping rules, -local variables can be freely accessed by functions -defined inside their scope. -A local variable used by an inner function is called -an upvalue, or external local variable, -inside the inner function. - - -

-Notice that each execution of a local statement -defines new local variables. -Consider the following example: - -

-     a = {}
-     local x = 20
-     for i=1,10 do
-       local y = 0
-       a[i] = function () y=y+1; return x+y end
-     end
-

-The loop creates ten closures -(that is, ten instances of the anonymous function). -Each of these closures uses a different y variable, -while all of them share the same x. - - - - - -

4 – The Application Program Interface

- -

- -This section describes the C API for Lua, that is, -the set of C functions available to the host program to communicate -with Lua. -All API functions and related types and constants -are declared in the header file lua.h. - - -

-Even when we use the term "function", -any facility in the API may be provided as a macro instead. -Except where stated otherwise, -all such macros use each of their arguments exactly once -(except for the first argument, which is always a Lua state), -and so do not generate any hidden side-effects. - - -

-As in most C libraries, -the Lua API functions do not check their arguments for validity or consistency. -However, you can change this behavior by compiling Lua -with the macro LUA_USE_APICHECK defined. - - -

-The Lua library is fully reentrant: -it has no global variables. -It keeps all information it needs in a dynamic structure, -called the Lua state. - - -

-Each Lua state has one or more threads, -which correspond to independent, cooperative lines of execution. -The type lua_State (despite its name) refers to a thread. -(Indirectly, through the thread, it also refers to the -Lua state associated to the thread.) - - -

-A pointer to a thread must be passed as the first argument to -every function in the library, except to lua_newstate, -which creates a Lua state from scratch and returns a pointer -to the main thread in the new state. - - - -

4.1 – The Stack

- -

-Lua uses a virtual stack to pass values to and from C. -Each element in this stack represents a Lua value -(nil, number, string, etc.). -Functions in the API can access this stack through the -Lua state parameter that they receive. - - -

-Whenever Lua calls C, the called function gets a new stack, -which is independent of previous stacks and of stacks of -C functions that are still active. -This stack initially contains any arguments to the C function -and it is where the C function can store temporary -Lua values and must push its results -to be returned to the caller (see lua_CFunction). - - -

-For convenience, -most query operations in the API do not follow a strict stack discipline. -Instead, they can refer to any element in the stack -by using an index: -A positive index represents an absolute stack position -(starting at 1); -a negative index represents an offset relative to the top of the stack. -More specifically, if the stack has n elements, -then index 1 represents the first element -(that is, the element that was pushed onto the stack first) -and -index n represents the last element; -index -1 also represents the last element -(that is, the element at the top) -and index -n represents the first element. - - - - - -

4.2 – Stack Size

- -

-When you interact with the Lua API, -you are responsible for ensuring consistency. -In particular, -you are responsible for controlling stack overflow. -You can use the function lua_checkstack -to ensure that the stack has enough space for pushing new elements. - - -

-Whenever Lua calls C, -it ensures that the stack has space for -at least LUA_MINSTACK extra slots. -LUA_MINSTACK is defined as 20, -so that usually you do not have to worry about stack space -unless your code has loops pushing elements onto the stack. - - -

-When you call a Lua function -without a fixed number of results (see lua_call), -Lua ensures that the stack has enough space for all results, -but it does not ensure any extra space. -So, before pushing anything in the stack after such a call -you should use lua_checkstack. - - - - - -

4.3 – Valid and Acceptable Indices

- -

-Any function in the API that receives stack indices -works only with valid indices or acceptable indices. - - -

-A valid index is an index that refers to a -position that stores a modifiable Lua value. -It comprises stack indices between 1 and the stack top -(1 ≤ abs(index) ≤ top) - -plus pseudo-indices, -which represent some positions that are accessible to C code -but that are not in the stack. -Pseudo-indices are used to access the registry (see §4.5) -and the upvalues of a C function (see §4.4). - - -

-Functions that do not need a specific mutable position, -but only a value (e.g., query functions), -can be called with acceptable indices. -An acceptable index can be any valid index, -but it also can be any positive index after the stack top -within the space allocated for the stack, -that is, indices up to the stack size. -(Note that 0 is never an acceptable index.) -Except when noted otherwise, -functions in the API work with acceptable indices. - - -

-Acceptable indices serve to avoid extra tests -against the stack top when querying the stack. -For instance, a C function can query its third argument -without the need to first check whether there is a third argument, -that is, without the need to check whether 3 is a valid index. - - -

-For functions that can be called with acceptable indices, -any non-valid index is treated as if it -contains a value of a virtual type LUA_TNONE, -which behaves like a nil value. - - - - - -

4.4 – C Closures

- -

-When a C function is created, -it is possible to associate some values with it, -thus creating a C closure -(see lua_pushcclosure); -these values are called upvalues and are -accessible to the function whenever it is called. - - -

-Whenever a C function is called, -its upvalues are located at specific pseudo-indices. -These pseudo-indices are produced by the macro -lua_upvalueindex. -The first upvalue associated with a function is at index -lua_upvalueindex(1), and so on. -Any access to lua_upvalueindex(n), -where n is greater than the number of upvalues of the -current function -(but not greater than 256, -which is one plus the maximum number of upvalues in a closure), -produces an acceptable but invalid index. - - - - - -

4.5 – Registry

- -

-Lua provides a registry, -a predefined table that can be used by any C code to -store whatever Lua values it needs to store. -The registry table is always located at pseudo-index -LUA_REGISTRYINDEX. -Any C library can store data into this table, -but it must take care to choose keys -that are different from those used -by other libraries, to avoid collisions. -Typically, you should use as key a string containing your library name, -or a light userdata with the address of a C object in your code, -or any Lua object created by your code. -As with variable names, -string keys starting with an underscore followed by -uppercase letters are reserved for Lua. - - -

-The integer keys in the registry are used -by the reference mechanism (see luaL_ref) -and by some predefined values. -Therefore, integer keys must not be used for other purposes. - - -

-When you create a new Lua state, -its registry comes with some predefined values. -These predefined values are indexed with integer keys -defined as constants in lua.h. -The following constants are defined: - -

    -
  • LUA_RIDX_MAINTHREAD: At this index the registry has -the main thread of the state. -(The main thread is the one created together with the state.) -
    • - -
  • LUA_RIDX_GLOBALS: At this index the registry has -the global environment. -
    • -
- - - - -

4.6 – Error Handling in C

- -

-Internally, Lua uses the C longjmp facility to handle errors. -(Lua will use exceptions if you compile it as C++; -search for LUAI_THROW in the source code for details.) -When Lua faces any error -(such as a memory allocation error or a type error) -it raises an error; -that is, it does a long jump. -A protected environment uses setjmp -to set a recovery point; -any error jumps to the most recent active recovery point. - - -

-Inside a C function you can raise an error by calling lua_error. - - -

-Most functions in the API can raise an error, -for instance due to a memory allocation error. -The documentation for each function indicates whether -it can raise errors. - - -

-If an error happens outside any protected environment, -Lua calls a panic function (see lua_atpanic) -and then calls abort, -thus exiting the host application. -Your panic function can avoid this exit by -never returning -(e.g., doing a long jump to your own recovery point outside Lua). - - -

-The panic function, -as its name implies, -is a mechanism of last resort. -Programs should avoid it. -As a general rule, -when a C function is called by Lua with a Lua state, -it can do whatever it wants on that Lua state, -as it should be already protected. -However, -when C code operates on other Lua states -(e.g., a Lua parameter to the function, -a Lua state stored in the registry, or -the result of lua_newthread), -it should use them only in API calls that cannot raise errors. - - -

-The panic function runs as if it were a message handler (see §2.3); -in particular, the error object is at the top of the stack. -However, there is no guarantee about stack space. -To push anything on the stack, -the panic function must first check the available space (see §4.2). - - - - - -

4.7 – Handling Yields in C

- -

-Internally, Lua uses the C longjmp facility to yield a coroutine. -Therefore, if a C function foo calls an API function -and this API function yields -(directly or indirectly by calling another function that yields), -Lua cannot return to foo any more, -because the longjmp removes its frame from the C stack. - - -

-To avoid this kind of problem, -Lua raises an error whenever it tries to yield across an API call, -except for three functions: -lua_yieldk, lua_callk, and lua_pcallk. -All those functions receive a continuation function -(as a parameter named k) to continue execution after a yield. - - -

-We need to set some terminology to explain continuations. -We have a C function called from Lua which we will call -the original function. -This original function then calls one of those three functions in the C API, -which we will call the callee function, -that then yields the current thread. -(This can happen when the callee function is lua_yieldk, -or when the callee function is either lua_callk or lua_pcallk -and the function called by them yields.) - - -

-Suppose the running thread yields while executing the callee function. -After the thread resumes, -it eventually will finish running the callee function. -However, -the callee function cannot return to the original function, -because its frame in the C stack was destroyed by the yield. -Instead, Lua calls a continuation function, -which was given as an argument to the callee function. -As the name implies, -the continuation function should continue the task -of the original function. - - -

-As an illustration, consider the following function: - -

-     int original_function (lua_State *L) {
-       ...     /* code 1 */
-       status = lua_pcall(L, n, m, h);  /* calls Lua */
-       ...     /* code 2 */
-     }
-

-Now we want to allow -the Lua code being run by lua_pcall to yield. -First, we can rewrite our function like here: - -

-     int k (lua_State *L, int status, lua_KContext ctx) {
-       ...  /* code 2 */
-     }
-     
-     int original_function (lua_State *L) {
-       ...     /* code 1 */
-       return k(L, lua_pcall(L, n, m, h), ctx);
-     }
-

-In the above code, -the new function k is a -continuation function (with type lua_KFunction), -which should do all the work that the original function -was doing after calling lua_pcall. -Now, we must inform Lua that it must call k if the Lua code -being executed by lua_pcall gets interrupted in some way -(errors or yielding), -so we rewrite the code as here, -replacing lua_pcall by lua_pcallk: - -

-     int original_function (lua_State *L) {
-       ...     /* code 1 */
-       return k(L, lua_pcallk(L, n, m, h, ctx2, k), ctx1);
-     }
-

-Note the external, explicit call to the continuation: -Lua will call the continuation only if needed, that is, -in case of errors or resuming after a yield. -If the called function returns normally without ever yielding, -lua_pcallk (and lua_callk) will also return normally. -(Of course, instead of calling the continuation in that case, -you can do the equivalent work directly inside the original function.) - - -

-Besides the Lua state, -the continuation function has two other parameters: -the final status of the call plus the context value (ctx) that -was passed originally to lua_pcallk. -(Lua does not use this context value; -it only passes this value from the original function to the -continuation function.) -For lua_pcallk, -the status is the same value that would be returned by lua_pcallk, -except that it is LUA_YIELD when being executed after a yield -(instead of LUA_OK). -For lua_yieldk and lua_callk, -the status is always LUA_YIELD when Lua calls the continuation. -(For these two functions, -Lua will not call the continuation in case of errors, -because they do not handle errors.) -Similarly, when using lua_callk, -you should call the continuation function -with LUA_OK as the status. -(For lua_yieldk, there is not much point in calling -directly the continuation function, -because lua_yieldk usually does not return.) - - -

-Lua treats the continuation function as if it were the original function. -The continuation function receives the same Lua stack -from the original function, -in the same state it would be if the callee function had returned. -(For instance, -after a lua_callk the function and its arguments are -removed from the stack and replaced by the results from the call.) -It also has the same upvalues. -Whatever it returns is handled by Lua as if it were the return -of the original function. - - - - - -

4.8 – Functions and Types

- -

-Here we list all functions and types from the C API in -alphabetical order. -Each function has an indicator like this: -[-o, +p, x] - - -

-The first field, o, -is how many elements the function pops from the stack. -The second field, p, -is how many elements the function pushes onto the stack. -(Any function always pushes its results after popping its arguments.) -A field in the form x|y means the function can push (or pop) -x or y elements, -depending on the situation; -an interrogation mark '?' means that -we cannot know how many elements the function pops/pushes -by looking only at its arguments -(e.g., they may depend on what is on the stack). -The third field, x, -tells whether the function may raise errors: -'-' means the function never raises any error; -'m' means the function may raise out-of-memory errors -and errors running a __gc metamethod; -'e' means the function may raise any errors -(it can run arbitrary Lua code, -either directly or through metamethods); -'v' means the function may raise an error on purpose. - - - -

lua_absindex

-[-0, +0, –] -

int lua_absindex (lua_State *L, int idx);
- -

-Converts the acceptable index idx -into an equivalent absolute index -(that is, one that does not depend on the stack top). - - - - - -

lua_Alloc

-
typedef void * (*lua_Alloc) (void *ud,
-                             void *ptr,
-                             size_t osize,
-                             size_t nsize);
- -

-The type of the memory-allocation function used by Lua states. -The allocator function must provide a -functionality similar to realloc, -but not exactly the same. -Its arguments are -ud, an opaque pointer passed to lua_newstate; -ptr, a pointer to the block being allocated/reallocated/freed; -osize, the original size of the block or some code about what -is being allocated; -and nsize, the new size of the block. - - -

-When ptr is not NULL, -osize is the size of the block pointed by ptr, -that is, the size given when it was allocated or reallocated. - - -

-When ptr is NULL, -osize encodes the kind of object that Lua is allocating. -osize is any of -LUA_TSTRING, LUA_TTABLE, LUA_TFUNCTION, -LUA_TUSERDATA, or LUA_TTHREAD when (and only when) -Lua is creating a new object of that type. -When osize is some other value, -Lua is allocating memory for something else. - - -

-Lua assumes the following behavior from the allocator function: - - -

-When nsize is zero, -the allocator must behave like free -and return NULL. - - -

-When nsize is not zero, -the allocator must behave like realloc. -The allocator returns NULL -if and only if it cannot fulfill the request. -Lua assumes that the allocator never fails when -osize >= nsize. - - -

-Here is a simple implementation for the allocator function. -It is used in the auxiliary library by luaL_newstate. - -

-     static void *l_alloc (void *ud, void *ptr, size_t osize,
-                                                size_t nsize) {
-       (void)ud;  (void)osize;  /* not used */
-       if (nsize == 0) {
-         free(ptr);
-         return NULL;
-       }
-       else
-         return realloc(ptr, nsize);
-     }
-

-Note that Standard C ensures -that free(NULL) has no effect and that -realloc(NULL,size) is equivalent to malloc(size). -This code assumes that realloc does not fail when shrinking a block. -(Although Standard C does not ensure this behavior, -it seems to be a safe assumption.) - - - - - -

lua_arith

-[-(2|1), +1, e] -

void lua_arith (lua_State *L, int op);
- -

-Performs an arithmetic or bitwise operation over the two values -(or one, in the case of negations) -at the top of the stack, -with the value at the top being the second operand, -pops these values, and pushes the result of the operation. -The function follows the semantics of the corresponding Lua operator -(that is, it may call metamethods). - - -

-The value of op must be one of the following constants: - -

- - - - -

lua_atpanic

-[-0, +0, –] -

lua_CFunction lua_atpanic (lua_State *L, lua_CFunction panicf);
- -

-Sets a new panic function and returns the old one (see §4.6). - - - - - -

lua_call

-[-(nargs+1), +nresults, e] -

void lua_call (lua_State *L, int nargs, int nresults);
- -

-Calls a function. - - -

-To call a function you must use the following protocol: -first, the function to be called is pushed onto the stack; -then, the arguments to the function are pushed -in direct order; -that is, the first argument is pushed first. -Finally you call lua_call; -nargs is the number of arguments that you pushed onto the stack. -All arguments and the function value are popped from the stack -when the function is called. -The function results are pushed onto the stack when the function returns. -The number of results is adjusted to nresults, -unless nresults is LUA_MULTRET. -In this case, all results from the function are pushed; -Lua takes care that the returned values fit into the stack space, -but it does not ensure any extra space in the stack. -The function results are pushed onto the stack in direct order -(the first result is pushed first), -so that after the call the last result is on the top of the stack. - - -

-Any error inside the called function is propagated upwards -(with a longjmp). - - -

-The following example shows how the host program can do the -equivalent to this Lua code: - -

-     a = f("how", t.x, 14)
-

-Here it is in C: - -

-     lua_getglobal(L, "f");                  /* function to be called */
-     lua_pushliteral(L, "how");                       /* 1st argument */
-     lua_getglobal(L, "t");                    /* table to be indexed */
-     lua_getfield(L, -1, "x");        /* push result of t.x (2nd arg) */
-     lua_remove(L, -2);                  /* remove 't' from the stack */
-     lua_pushinteger(L, 14);                          /* 3rd argument */
-     lua_call(L, 3, 1);     /* call 'f' with 3 arguments and 1 result */
-     lua_setglobal(L, "a");                         /* set global 'a' */
-

-Note that the code above is balanced: -at its end, the stack is back to its original configuration. -This is considered good programming practice. - - - - - -

lua_callk

-[-(nargs + 1), +nresults, e] -

void lua_callk (lua_State *L,
-                int nargs,
-                int nresults,
-                lua_KContext ctx,
-                lua_KFunction k);
- -

-This function behaves exactly like lua_call, -but allows the called function to yield (see §4.7). - - - - - -

lua_CFunction

-
typedef int (*lua_CFunction) (lua_State *L);
- -

-Type for C functions. - - -

-In order to communicate properly with Lua, -a C function must use the following protocol, -which defines the way parameters and results are passed: -a C function receives its arguments from Lua in its stack -in direct order (the first argument is pushed first). -So, when the function starts, -lua_gettop(L) returns the number of arguments received by the function. -The first argument (if any) is at index 1 -and its last argument is at index lua_gettop(L). -To return values to Lua, a C function just pushes them onto the stack, -in direct order (the first result is pushed first), -and returns the number of results. -Any other value in the stack below the results will be properly -discarded by Lua. -Like a Lua function, a C function called by Lua can also return -many results. - - -

-As an example, the following function receives a variable number -of numeric arguments and returns their average and their sum: - -

-     static int foo (lua_State *L) {
-       int n = lua_gettop(L);    /* number of arguments */
-       lua_Number sum = 0.0;
-       int i;
-       for (i = 1; i <= n; i++) {
-         if (!lua_isnumber(L, i)) {
-           lua_pushliteral(L, "incorrect argument");
-           lua_error(L);
-         }
-         sum += lua_tonumber(L, i);
-       }
-       lua_pushnumber(L, sum/n);        /* first result */
-       lua_pushnumber(L, sum);         /* second result */
-       return 2;                   /* number of results */
-     }
-
- - - - -

lua_checkstack

-[-0, +0, –] -

int lua_checkstack (lua_State *L, int n);
- -

-Ensures that the stack has space for at least n extra slots -(that is, that you can safely push up to n values into it). -It returns false if it cannot fulfill the request, -either because it would cause the stack -to be larger than a fixed maximum size -(typically at least several thousand elements) or -because it cannot allocate memory for the extra space. -This function never shrinks the stack; -if the stack already has space for the extra slots, -it is left unchanged. - - - - - -

lua_close

-[-0, +0, –] -

void lua_close (lua_State *L);
- -

-Destroys all objects in the given Lua state -(calling the corresponding garbage-collection metamethods, if any) -and frees all dynamic memory used by this state. -On several platforms, you may not need to call this function, -because all resources are naturally released when the host program ends. -On the other hand, long-running programs that create multiple states, -such as daemons or web servers, -will probably need to close states as soon as they are not needed. - - - - - -

lua_compare

-[-0, +0, e] -

int lua_compare (lua_State *L, int index1, int index2, int op);
- -

-Compares two Lua values. -Returns 1 if the value at index index1 satisfies op -when compared with the value at index index2, -following the semantics of the corresponding Lua operator -(that is, it may call metamethods). -Otherwise returns 0. -Also returns 0 if any of the indices is not valid. - - -

-The value of op must be one of the following constants: - -

    - -
  • LUA_OPEQ: compares for equality (==)
    • -
  • LUA_OPLT: compares for less than (<)
    • -
  • LUA_OPLE: compares for less or equal (<=)
    • - -
- - - - -

lua_concat

-[-n, +1, e] -

void lua_concat (lua_State *L, int n);
- -

-Concatenates the n values at the top of the stack, -pops them, and leaves the result at the top. -If n is 1, the result is the single value on the stack -(that is, the function does nothing); -if n is 0, the result is the empty string. -Concatenation is performed following the usual semantics of Lua -(see §3.4.6). - - - - - -

lua_copy

-[-0, +0, –] -

void lua_copy (lua_State *L, int fromidx, int toidx);
- -

-Copies the element at index fromidx -into the valid index toidx, -replacing the value at that position. -Values at other positions are not affected. - - - - - -

lua_createtable

-[-0, +1, m] -

void lua_createtable (lua_State *L, int narr, int nrec);
- -

-Creates a new empty table and pushes it onto the stack. -Parameter narr is a hint for how many elements the table -will have as a sequence; -parameter nrec is a hint for how many other elements -the table will have. -Lua may use these hints to preallocate memory for the new table. -This preallocation is useful for performance when you know in advance -how many elements the table will have. -Otherwise you can use the function lua_newtable. - - - - - -

lua_dump

-[-0, +0, –] -

int lua_dump (lua_State *L,
-                        lua_Writer writer,
-                        void *data,
-                        int strip);
- -

-Dumps a function as a binary chunk. -Receives a Lua function on the top of the stack -and produces a binary chunk that, -if loaded again, -results in a function equivalent to the one dumped. -As it produces parts of the chunk, -lua_dump calls function writer (see lua_Writer) -with the given data -to write them. - - -

-If strip is true, -the binary representation may not include all debug information -about the function, -to save space. - - -

-The value returned is the error code returned by the last -call to the writer; -0 means no errors. - - -

-This function does not pop the Lua function from the stack. - - - - - -

lua_error

-[-1, +0, v] -

int lua_error (lua_State *L);
- -

-Generates a Lua error, -using the value at the top of the stack as the error object. -This function does a long jump, -and therefore never returns -(see luaL_error). - - - - - -

lua_gc

-[-0, +0, m] -

int lua_gc (lua_State *L, int what, int data);
- -

-Controls the garbage collector. - - -

-This function performs several tasks, -according to the value of the parameter what: - -

    - -
  • LUA_GCSTOP: -stops the garbage collector. -
    • - -
  • LUA_GCRESTART: -restarts the garbage collector. -
    • - -
  • LUA_GCCOLLECT: -performs a full garbage-collection cycle. -
    • - -
  • LUA_GCCOUNT: -returns the current amount of memory (in Kbytes) in use by Lua. -
    • - -
  • LUA_GCCOUNTB: -returns the remainder of dividing the current amount of bytes of -memory in use by Lua by 1024. -
    • - -
  • LUA_GCSTEP: -performs an incremental step of garbage collection. -
    • - -
  • LUA_GCSETPAUSE: -sets data as the new value -for the pause of the collector (see §2.5) -and returns the previous value of the pause. -
    • - -
  • LUA_GCSETSTEPMUL: -sets data as the new value for the step multiplier of -the collector (see §2.5) -and returns the previous value of the step multiplier. -
    • - -
  • LUA_GCISRUNNING: -returns a boolean that tells whether the collector is running -(i.e., not stopped). -
    • - -
- -

-For more details about these options, -see collectgarbage. - - - - - -

lua_getallocf

-[-0, +0, –] -

lua_Alloc lua_getallocf (lua_State *L, void **ud);
- -

-Returns the memory-allocation function of a given state. -If ud is not NULL, Lua stores in *ud the -opaque pointer given when the memory-allocator function was set. - - - - - -

lua_getfield

-[-0, +1, e] -

int lua_getfield (lua_State *L, int index, const char *k);
- -

-Pushes onto the stack the value t[k], -where t is the value at the given index. -As in Lua, this function may trigger a metamethod -for the "index" event (see §2.4). - - -

-Returns the type of the pushed value. - - - - - -

lua_getextraspace

-[-0, +0, –] -

void *lua_getextraspace (lua_State *L);
- -

-Returns a pointer to a raw memory area associated with the -given Lua state. -The application can use this area for any purpose; -Lua does not use it for anything. - - -

-Each new thread has this area initialized with a copy -of the area of the main thread. - - -

-By default, this area has the size of a pointer to void, -but you can recompile Lua with a different size for this area. -(See LUA_EXTRASPACE in luaconf.h.) - - - - - -

lua_getglobal

-[-0, +1, e] -

int lua_getglobal (lua_State *L, const char *name);
- -

-Pushes onto the stack the value of the global name. -Returns the type of that value. - - - - - -

lua_geti

-[-0, +1, e] -

int lua_geti (lua_State *L, int index, lua_Integer i);
- -

-Pushes onto the stack the value t[i], -where t is the value at the given index. -As in Lua, this function may trigger a metamethod -for the "index" event (see §2.4). - - -

-Returns the type of the pushed value. - - - - - -

lua_getmetatable

-[-0, +(0|1), –] -

int lua_getmetatable (lua_State *L, int index);
- -

-If the value at the given index has a metatable, -the function pushes that metatable onto the stack and returns 1. -Otherwise, -the function returns 0 and pushes nothing on the stack. - - - - - -

lua_gettable

-[-1, +1, e] -

int lua_gettable (lua_State *L, int index);
- -

-Pushes onto the stack the value t[k], -where t is the value at the given index -and k is the value at the top of the stack. - - -

-This function pops the key from the stack, -pushing the resulting value in its place. -As in Lua, this function may trigger a metamethod -for the "index" event (see §2.4). - - -

-Returns the type of the pushed value. - - - - - -

lua_gettop

-[-0, +0, –] -

int lua_gettop (lua_State *L);
- -

-Returns the index of the top element in the stack. -Because indices start at 1, -this result is equal to the number of elements in the stack; -in particular, 0 means an empty stack. - - - - - -

lua_getuservalue

-[-0, +1, –] -

int lua_getuservalue (lua_State *L, int index);
- -

-Pushes onto the stack the Lua value associated with the full userdata -at the given index. - - -

-Returns the type of the pushed value. - - - - - -

lua_insert

-[-1, +1, –] -

void lua_insert (lua_State *L, int index);
- -

-Moves the top element into the given valid index, -shifting up the elements above this index to open space. -This function cannot be called with a pseudo-index, -because a pseudo-index is not an actual stack position. - - - - - -

lua_Integer

-
typedef ... lua_Integer;
- -

-The type of integers in Lua. - - -

-By default this type is long long, -(usually a 64-bit two-complement integer), -but that can be changed to long or int -(usually a 32-bit two-complement integer). -(See LUA_INT_TYPE in luaconf.h.) - - -

-Lua also defines the constants -LUA_MININTEGER and LUA_MAXINTEGER, -with the minimum and the maximum values that fit in this type. - - - - - -

lua_isboolean

-[-0, +0, –] -

int lua_isboolean (lua_State *L, int index);
- -

-Returns 1 if the value at the given index is a boolean, -and 0 otherwise. - - - - - -

lua_iscfunction

-[-0, +0, –] -

int lua_iscfunction (lua_State *L, int index);
- -

-Returns 1 if the value at the given index is a C function, -and 0 otherwise. - - - - - -

lua_isfunction

-[-0, +0, –] -

int lua_isfunction (lua_State *L, int index);
- -

-Returns 1 if the value at the given index is a function -(either C or Lua), and 0 otherwise. - - - - - -

lua_isinteger

-[-0, +0, –] -

int lua_isinteger (lua_State *L, int index);
- -

-Returns 1 if the value at the given index is an integer -(that is, the value is a number and is represented as an integer), -and 0 otherwise. - - - - - -

lua_islightuserdata

-[-0, +0, –] -

int lua_islightuserdata (lua_State *L, int index);
- -

-Returns 1 if the value at the given index is a light userdata, -and 0 otherwise. - - - - - -

lua_isnil

-[-0, +0, –] -

int lua_isnil (lua_State *L, int index);
- -

-Returns 1 if the value at the given index is nil, -and 0 otherwise. - - - - - -

lua_isnone

-[-0, +0, –] -

int lua_isnone (lua_State *L, int index);
- -

-Returns 1 if the given index is not valid, -and 0 otherwise. - - - - - -

lua_isnoneornil

-[-0, +0, –] -

int lua_isnoneornil (lua_State *L, int index);
- -

-Returns 1 if the given index is not valid -or if the value at this index is nil, -and 0 otherwise. - - - - - -

lua_isnumber

-[-0, +0, –] -

int lua_isnumber (lua_State *L, int index);
- -

-Returns 1 if the value at the given index is a number -or a string convertible to a number, -and 0 otherwise. - - - - - -

lua_isstring

-[-0, +0, –] -

int lua_isstring (lua_State *L, int index);
- -

-Returns 1 if the value at the given index is a string -or a number (which is always convertible to a string), -and 0 otherwise. - - - - - -

lua_istable

-[-0, +0, –] -

int lua_istable (lua_State *L, int index);
- -

-Returns 1 if the value at the given index is a table, -and 0 otherwise. - - - - - -

lua_isthread

-[-0, +0, –] -

int lua_isthread (lua_State *L, int index);
- -

-Returns 1 if the value at the given index is a thread, -and 0 otherwise. - - - - - -

lua_isuserdata

-[-0, +0, –] -

int lua_isuserdata (lua_State *L, int index);
- -

-Returns 1 if the value at the given index is a userdata -(either full or light), and 0 otherwise. - - - - - -

lua_isyieldable

-[-0, +0, –] -

int lua_isyieldable (lua_State *L);
- -

-Returns 1 if the given coroutine can yield, -and 0 otherwise. - - - - - -

lua_KContext

-
typedef ... lua_KContext;
- -

-The type for continuation-function contexts. -It must be a numeric type. -This type is defined as intptr_t -when intptr_t is available, -so that it can store pointers too. -Otherwise, it is defined as ptrdiff_t. - - - - - -

lua_KFunction

-
typedef int (*lua_KFunction) (lua_State *L, int status, lua_KContext ctx);
- -

-Type for continuation functions (see §4.7). - - - - - -

lua_len

-[-0, +1, e] -

void lua_len (lua_State *L, int index);
- -

-Returns the length of the value at the given index. -It is equivalent to the '#' operator in Lua (see §3.4.7) and -may trigger a metamethod for the "length" event (see §2.4). -The result is pushed on the stack. - - - - - -

lua_load

-[-0, +1, –] -

int lua_load (lua_State *L,
-              lua_Reader reader,
-              void *data,
-              const char *chunkname,
-              const char *mode);
- -

-Loads a Lua chunk without running it. -If there are no errors, -lua_load pushes the compiled chunk as a Lua -function on top of the stack. -Otherwise, it pushes an error message. - - -

-The return values of lua_load are: - -

    - -
  • LUA_OK: no errors;
    • - -
  • LUA_ERRSYNTAX: -syntax error during precompilation;
    • - -
  • LUA_ERRMEM: -memory allocation (out-of-memory) error;
    • - -
  • LUA_ERRGCMM: -error while running a __gc metamethod. -(This error has no relation with the chunk being loaded. -It is generated by the garbage collector.) -
    • - -
- -

-The lua_load function uses a user-supplied reader function -to read the chunk (see lua_Reader). -The data argument is an opaque value passed to the reader function. - - -

-The chunkname argument gives a name to the chunk, -which is used for error messages and in debug information (see §4.9). - - -

-lua_load automatically detects whether the chunk is text or binary -and loads it accordingly (see program luac). -The string mode works as in function load, -with the addition that -a NULL value is equivalent to the string "bt". - - -

-lua_load uses the stack internally, -so the reader function must always leave the stack -unmodified when returning. - - -

-If the resulting function has upvalues, -its first upvalue is set to the value of the global environment -stored at index LUA_RIDX_GLOBALS in the registry (see §4.5). -When loading main chunks, -this upvalue will be the _ENV variable (see §2.2). -Other upvalues are initialized with nil. - - - - - -

lua_newstate

-[-0, +0, –] -

lua_State *lua_newstate (lua_Alloc f, void *ud);
- -

-Creates a new thread running in a new, independent state. -Returns NULL if it cannot create the thread or the state -(due to lack of memory). -The argument f is the allocator function; -Lua does all memory allocation for this state -through this function (see lua_Alloc). -The second argument, ud, is an opaque pointer that Lua -passes to the allocator in every call. - - - - - -

lua_newtable

-[-0, +1, m] -

void lua_newtable (lua_State *L);
- -

-Creates a new empty table and pushes it onto the stack. -It is equivalent to lua_createtable(L, 0, 0). - - - - - -

lua_newthread

-[-0, +1, m] -

lua_State *lua_newthread (lua_State *L);
- -

-Creates a new thread, pushes it on the stack, -and returns a pointer to a lua_State that represents this new thread. -The new thread returned by this function shares with the original thread -its global environment, -but has an independent execution stack. - - -

-There is no explicit function to close or to destroy a thread. -Threads are subject to garbage collection, -like any Lua object. - - - - - -

lua_newuserdata

-[-0, +1, m] -

void *lua_newuserdata (lua_State *L, size_t size);
- -

-This function allocates a new block of memory with the given size, -pushes onto the stack a new full userdata with the block address, -and returns this address. -The host program can freely use this memory. - - - - - -

lua_next

-[-1, +(2|0), e] -

int lua_next (lua_State *L, int index);
- -

-Pops a key from the stack, -and pushes a key–value pair from the table at the given index -(the "next" pair after the given key). -If there are no more elements in the table, -then lua_next returns 0 (and pushes nothing). - - -

-A typical traversal looks like this: - -

-     /* table is in the stack at index 't' */
-     lua_pushnil(L);  /* first key */
-     while (lua_next(L, t) != 0) {
-       /* uses 'key' (at index -2) and 'value' (at index -1) */
-       printf("%s - %s\n",
-              lua_typename(L, lua_type(L, -2)),
-              lua_typename(L, lua_type(L, -1)));
-       /* removes 'value'; keeps 'key' for next iteration */
-       lua_pop(L, 1);
-     }
-
- -

-While traversing a table, -do not call lua_tolstring directly on a key, -unless you know that the key is actually a string. -Recall that lua_tolstring may change -the value at the given index; -this confuses the next call to lua_next. - - -

-See function next for the caveats of modifying -the table during its traversal. - - - - - -

lua_Number

-
typedef ... lua_Number;
- -

-The type of floats in Lua. - - -

-By default this type is double, -but that can be changed to a single float or a long double. -(See LUA_FLOAT_TYPE in luaconf.h.) - - - - - -

lua_numbertointeger

-
int lua_numbertointeger (lua_Number n, lua_Integer *p);
- -

-Converts a Lua float to a Lua integer. -This macro assumes that n has an integral value. -If that value is within the range of Lua integers, -it is converted to an integer and assigned to *p. -The macro results in a boolean indicating whether the -conversion was successful. -(Note that this range test can be tricky to do -correctly without this macro, -due to roundings.) - - -

-This macro may evaluate its arguments more than once. - - - - - -

lua_pcall

-[-(nargs + 1), +(nresults|1), –] -

int lua_pcall (lua_State *L, int nargs, int nresults, int msgh);
- -

-Calls a function in protected mode. - - -

-Both nargs and nresults have the same meaning as -in lua_call. -If there are no errors during the call, -lua_pcall behaves exactly like lua_call. -However, if there is any error, -lua_pcall catches it, -pushes a single value on the stack (the error object), -and returns an error code. -Like lua_call, -lua_pcall always removes the function -and its arguments from the stack. - - -

-If msgh is 0, -then the error object returned on the stack -is exactly the original error object. -Otherwise, msgh is the stack index of a -message handler. -(This index cannot be a pseudo-index.) -In case of runtime errors, -this function will be called with the error object -and its return value will be the object -returned on the stack by lua_pcall. - - -

-Typically, the message handler is used to add more debug -information to the error object, such as a stack traceback. -Such information cannot be gathered after the return of lua_pcall, -since by then the stack has unwound. - - -

-The lua_pcall function returns one of the following constants -(defined in lua.h): - -

    - -
  • LUA_OK (0): -success.
    • - -
  • LUA_ERRRUN: -a runtime error. -
    • - -
  • LUA_ERRMEM: -memory allocation error. -For such errors, Lua does not call the message handler. -
    • - -
  • LUA_ERRERR: -error while running the message handler. -
    • - -
  • LUA_ERRGCMM: -error while running a __gc metamethod. -For such errors, Lua does not call the message handler -(as this kind of error typically has no relation -with the function being called). -
    • - -
- - - - -

lua_pcallk

-[-(nargs + 1), +(nresults|1), –] -

int lua_pcallk (lua_State *L,
-                int nargs,
-                int nresults,
-                int msgh,
-                lua_KContext ctx,
-                lua_KFunction k);
- -

-This function behaves exactly like lua_pcall, -but allows the called function to yield (see §4.7). - - - - - -

lua_pop

-[-n, +0, –] -

void lua_pop (lua_State *L, int n);
- -

-Pops n elements from the stack. - - - - - -

lua_pushboolean

-[-0, +1, –] -

void lua_pushboolean (lua_State *L, int b);
- -

-Pushes a boolean value with value b onto the stack. - - - - - -

lua_pushcclosure

-[-n, +1, m] -

void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n);
- -

-Pushes a new C closure onto the stack. - - -

-When a C function is created, -it is possible to associate some values with it, -thus creating a C closure (see §4.4); -these values are then accessible to the function whenever it is called. -To associate values with a C function, -first these values must be pushed onto the stack -(when there are multiple values, the first value is pushed first). -Then lua_pushcclosure -is called to create and push the C function onto the stack, -with the argument n telling how many values will be -associated with the function. -lua_pushcclosure also pops these values from the stack. - - -

-The maximum value for n is 255. - - -

-When n is zero, -this function creates a light C function, -which is just a pointer to the C function. -In that case, it never raises a memory error. - - - - - -

lua_pushcfunction

-[-0, +1, –] -

void lua_pushcfunction (lua_State *L, lua_CFunction f);
- -

-Pushes a C function onto the stack. -This function receives a pointer to a C function -and pushes onto the stack a Lua value of type function that, -when called, invokes the corresponding C function. - - -

-Any function to be callable by Lua must -follow the correct protocol to receive its parameters -and return its results (see lua_CFunction). - - - - - -

lua_pushfstring

-[-0, +1, e] -

const char *lua_pushfstring (lua_State *L, const char *fmt, ...);
- -

-Pushes onto the stack a formatted string -and returns a pointer to this string. -It is similar to the ISO C function sprintf, -but has some important differences: - -

    - -
  • -You do not have to allocate space for the result: -the result is a Lua string and Lua takes care of memory allocation -(and deallocation, through garbage collection). -
    • - -
  • -The conversion specifiers are quite restricted. -There are no flags, widths, or precisions. -The conversion specifiers can only be -'%%' (inserts the character '%'), -'%s' (inserts a zero-terminated string, with no size restrictions), -'%f' (inserts a lua_Number), -'%I' (inserts a lua_Integer), -'%p' (inserts a pointer as a hexadecimal numeral), -'%d' (inserts an int), -'%c' (inserts an int as a one-byte character), and -'%U' (inserts a long int as a UTF-8 byte sequence). -
    • - -
- -

-Unlike other push functions, -this function checks for the stack space it needs, -including the slot for its result. - - - - - -

lua_pushglobaltable

-[-0, +1, –] -

void lua_pushglobaltable (lua_State *L);
- -

-Pushes the global environment onto the stack. - - - - - -

lua_pushinteger

-[-0, +1, –] -

void lua_pushinteger (lua_State *L, lua_Integer n);
- -

-Pushes an integer with value n onto the stack. - - - - - -

lua_pushlightuserdata

-[-0, +1, –] -

void lua_pushlightuserdata (lua_State *L, void *p);
- -

-Pushes a light userdata onto the stack. - - -

-Userdata represent C values in Lua. -A light userdata represents a pointer, a void*. -It is a value (like a number): -you do not create it, it has no individual metatable, -and it is not collected (as it was never created). -A light userdata is equal to "any" -light userdata with the same C address. - - - - - -

lua_pushliteral

-[-0, +1, m] -

const char *lua_pushliteral (lua_State *L, const char *s);
- -

-This macro is equivalent to lua_pushstring, -but should be used only when s is a literal string. - - - - - -

lua_pushlstring

-[-0, +1, m] -

const char *lua_pushlstring (lua_State *L, const char *s, size_t len);
- -

-Pushes the string pointed to by s with size len -onto the stack. -Lua makes (or reuses) an internal copy of the given string, -so the memory at s can be freed or reused immediately after -the function returns. -The string can contain any binary data, -including embedded zeros. - - -

-Returns a pointer to the internal copy of the string. - - - - - -

lua_pushnil

-[-0, +1, –] -

void lua_pushnil (lua_State *L);
- -

-Pushes a nil value onto the stack. - - - - - -

lua_pushnumber

-[-0, +1, –] -

void lua_pushnumber (lua_State *L, lua_Number n);
- -

-Pushes a float with value n onto the stack. - - - - - -

lua_pushstring

-[-0, +1, m] -

const char *lua_pushstring (lua_State *L, const char *s);
- -

-Pushes the zero-terminated string pointed to by s -onto the stack. -Lua makes (or reuses) an internal copy of the given string, -so the memory at s can be freed or reused immediately after -the function returns. - - -

-Returns a pointer to the internal copy of the string. - - -

-If s is NULL, pushes nil and returns NULL. - - - - - -

lua_pushthread

-[-0, +1, –] -

int lua_pushthread (lua_State *L);
- -

-Pushes the thread represented by L onto the stack. -Returns 1 if this thread is the main thread of its state. - - - - - -

lua_pushvalue

-[-0, +1, –] -

void lua_pushvalue (lua_State *L, int index);
- -

-Pushes a copy of the element at the given index -onto the stack. - - - - - -

lua_pushvfstring

-[-0, +1, m] -

const char *lua_pushvfstring (lua_State *L,
-                              const char *fmt,
-                              va_list argp);
- -

-Equivalent to lua_pushfstring, except that it receives a va_list -instead of a variable number of arguments. - - - - - -

lua_rawequal

-[-0, +0, –] -

int lua_rawequal (lua_State *L, int index1, int index2);
- -

-Returns 1 if the two values in indices index1 and -index2 are primitively equal -(that is, without calling the __eq metamethod). -Otherwise returns 0. -Also returns 0 if any of the indices are not valid. - - - - - -

lua_rawget

-[-1, +1, –] -

int lua_rawget (lua_State *L, int index);
- -

-Similar to lua_gettable, but does a raw access -(i.e., without metamethods). - - - - - -

lua_rawgeti

-[-0, +1, –] -

int lua_rawgeti (lua_State *L, int index, lua_Integer n);
- -

-Pushes onto the stack the value t[n], -where t is the table at the given index. -The access is raw, -that is, it does not invoke the __index metamethod. - - -

-Returns the type of the pushed value. - - - - - -

lua_rawgetp

-[-0, +1, –] -

int lua_rawgetp (lua_State *L, int index, const void *p);
- -

-Pushes onto the stack the value t[k], -where t is the table at the given index and -k is the pointer p represented as a light userdata. -The access is raw; -that is, it does not invoke the __index metamethod. - - -

-Returns the type of the pushed value. - - - - - -

lua_rawlen

-[-0, +0, –] -

size_t lua_rawlen (lua_State *L, int index);
- -

-Returns the raw "length" of the value at the given index: -for strings, this is the string length; -for tables, this is the result of the length operator ('#') -with no metamethods; -for userdata, this is the size of the block of memory allocated -for the userdata; -for other values, it is 0. - - - - - -

lua_rawset

-[-2, +0, m] -

void lua_rawset (lua_State *L, int index);
- -

-Similar to lua_settable, but does a raw assignment -(i.e., without metamethods). - - - - - -

lua_rawseti

-[-1, +0, m] -

void lua_rawseti (lua_State *L, int index, lua_Integer i);
- -

-Does the equivalent of t[i] = v, -where t is the table at the given index -and v is the value at the top of the stack. - - -

-This function pops the value from the stack. -The assignment is raw, -that is, it does not invoke the __newindex metamethod. - - - - - -

lua_rawsetp

-[-1, +0, m] -

void lua_rawsetp (lua_State *L, int index, const void *p);
- -

-Does the equivalent of t[p] = v, -where t is the table at the given index, -p is encoded as a light userdata, -and v is the value at the top of the stack. - - -

-This function pops the value from the stack. -The assignment is raw, -that is, it does not invoke __newindex metamethod. - - - - - -

lua_Reader

-
typedef const char * (*lua_Reader) (lua_State *L,
-                                    void *data,
-                                    size_t *size);
- -

-The reader function used by lua_load. -Every time it needs another piece of the chunk, -lua_load calls the reader, -passing along its data parameter. -The reader must return a pointer to a block of memory -with a new piece of the chunk -and set size to the block size. -The block must exist until the reader function is called again. -To signal the end of the chunk, -the reader must return NULL or set size to zero. -The reader function may return pieces of any size greater than zero. - - - - - -

lua_register

-[-0, +0, e] -

void lua_register (lua_State *L, const char *name, lua_CFunction f);
- -

-Sets the C function f as the new value of global name. -It is defined as a macro: - -

-     #define lua_register(L,n,f) \
-            (lua_pushcfunction(L, f), lua_setglobal(L, n))
-
- - - - -

lua_remove

-[-1, +0, –] -

void lua_remove (lua_State *L, int index);
- -

-Removes the element at the given valid index, -shifting down the elements above this index to fill the gap. -This function cannot be called with a pseudo-index, -because a pseudo-index is not an actual stack position. - - - - - -

lua_replace

-[-1, +0, –] -

void lua_replace (lua_State *L, int index);
- -

-Moves the top element into the given valid index -without shifting any element -(therefore replacing the value at that given index), -and then pops the top element. - - - - - -

lua_resume

-[-?, +?, –] -

int lua_resume (lua_State *L, lua_State *from, int nargs);
- -

-Starts and resumes a coroutine in the given thread L. - - -

-To start a coroutine, -you push onto the thread stack the main function plus any arguments; -then you call lua_resume, -with nargs being the number of arguments. -This call returns when the coroutine suspends or finishes its execution. -When it returns, the stack contains all values passed to lua_yield, -or all values returned by the body function. -lua_resume returns -LUA_YIELD if the coroutine yields, -LUA_OK if the coroutine finishes its execution -without errors, -or an error code in case of errors (see lua_pcall). - - -

-In case of errors, -the stack is not unwound, -so you can use the debug API over it. -The error object is on the top of the stack. - - -

-To resume a coroutine, -you remove any results from the last lua_yield, -put on its stack only the values to -be passed as results from yield, -and then call lua_resume. - - -

-The parameter from represents the coroutine that is resuming L. -If there is no such coroutine, -this parameter can be NULL. - - - - - -

lua_rotate

-[-0, +0, –] -

void lua_rotate (lua_State *L, int idx, int n);
- -

-Rotates the stack elements between the valid index idx -and the top of the stack. -The elements are rotated n positions in the direction of the top, -for a positive n, -or -n positions in the direction of the bottom, -for a negative n. -The absolute value of n must not be greater than the size -of the slice being rotated. -This function cannot be called with a pseudo-index, -because a pseudo-index is not an actual stack position. - - - - - -

lua_setallocf

-[-0, +0, –] -

void lua_setallocf (lua_State *L, lua_Alloc f, void *ud);
- -

-Changes the allocator function of a given state to f -with user data ud. - - - - - -

lua_setfield

-[-1, +0, e] -

void lua_setfield (lua_State *L, int index, const char *k);
- -

-Does the equivalent to t[k] = v, -where t is the value at the given index -and v is the value at the top of the stack. - - -

-This function pops the value from the stack. -As in Lua, this function may trigger a metamethod -for the "newindex" event (see §2.4). - - - - - -

lua_setglobal

-[-1, +0, e] -

void lua_setglobal (lua_State *L, const char *name);
- -

-Pops a value from the stack and -sets it as the new value of global name. - - - - - -

lua_seti

-[-1, +0, e] -

void lua_seti (lua_State *L, int index, lua_Integer n);
- -

-Does the equivalent to t[n] = v, -where t is the value at the given index -and v is the value at the top of the stack. - - -

-This function pops the value from the stack. -As in Lua, this function may trigger a metamethod -for the "newindex" event (see §2.4). - - - - - -

lua_setmetatable

-[-1, +0, –] -

void lua_setmetatable (lua_State *L, int index);
- -

-Pops a table from the stack and -sets it as the new metatable for the value at the given index. - - - - - -

lua_settable

-[-2, +0, e] -

void lua_settable (lua_State *L, int index);
- -

-Does the equivalent to t[k] = v, -where t is the value at the given index, -v is the value at the top of the stack, -and k is the value just below the top. - - -

-This function pops both the key and the value from the stack. -As in Lua, this function may trigger a metamethod -for the "newindex" event (see §2.4). - - - - - -

lua_settop

-[-?, +?, –] -

void lua_settop (lua_State *L, int index);
- -

-Accepts any index, or 0, -and sets the stack top to this index. -If the new top is larger than the old one, -then the new elements are filled with nil. -If index is 0, then all stack elements are removed. - - - - - -

lua_setuservalue

-[-1, +0, –] -

void lua_setuservalue (lua_State *L, int index);
- -

-Pops a value from the stack and sets it as -the new value associated to the full userdata at the given index. - - - - - -

lua_State

-
typedef struct lua_State lua_State;
- -

-An opaque structure that points to a thread and indirectly -(through the thread) to the whole state of a Lua interpreter. -The Lua library is fully reentrant: -it has no global variables. -All information about a state is accessible through this structure. - - -

-A pointer to this structure must be passed as the first argument to -every function in the library, except to lua_newstate, -which creates a Lua state from scratch. - - - - - -

lua_status

-[-0, +0, –] -

int lua_status (lua_State *L);
- -

-Returns the status of the thread L. - - -

-The status can be 0 (LUA_OK) for a normal thread, -an error code if the thread finished the execution -of a lua_resume with an error, -or LUA_YIELD if the thread is suspended. - - -

-You can only call functions in threads with status LUA_OK. -You can resume threads with status LUA_OK -(to start a new coroutine) or LUA_YIELD -(to resume a coroutine). - - - - - -

lua_stringtonumber

-[-0, +1, –] -

size_t lua_stringtonumber (lua_State *L, const char *s);
- -

-Converts the zero-terminated string s to a number, -pushes that number into the stack, -and returns the total size of the string, -that is, its length plus one. -The conversion can result in an integer or a float, -according to the lexical conventions of Lua (see §3.1). -The string may have leading and trailing spaces and a sign. -If the string is not a valid numeral, -returns 0 and pushes nothing. -(Note that the result can be used as a boolean, -true if the conversion succeeds.) - - - - - -

lua_toboolean

-[-0, +0, –] -

int lua_toboolean (lua_State *L, int index);
- -

-Converts the Lua value at the given index to a C boolean -value (0 or 1). -Like all tests in Lua, -lua_toboolean returns true for any Lua value -different from false and nil; -otherwise it returns false. -(If you want to accept only actual boolean values, -use lua_isboolean to test the value's type.) - - - - - -

lua_tocfunction

-[-0, +0, –] -

lua_CFunction lua_tocfunction (lua_State *L, int index);
- -

-Converts a value at the given index to a C function. -That value must be a C function; -otherwise, returns NULL. - - - - - -

lua_tointeger

-[-0, +0, –] -

lua_Integer lua_tointeger (lua_State *L, int index);
- -

-Equivalent to lua_tointegerx with isnum equal to NULL. - - - - - -

lua_tointegerx

-[-0, +0, –] -

lua_Integer lua_tointegerx (lua_State *L, int index, int *isnum);
- -

-Converts the Lua value at the given index -to the signed integral type lua_Integer. -The Lua value must be an integer, -or a number or string convertible to an integer (see §3.4.3); -otherwise, lua_tointegerx returns 0. - - -

-If isnum is not NULL, -its referent is assigned a boolean value that -indicates whether the operation succeeded. - - - - - -

lua_tolstring

-[-0, +0, m] -

const char *lua_tolstring (lua_State *L, int index, size_t *len);
- -

-Converts the Lua value at the given index to a C string. -If len is not NULL, -it sets *len with the string length. -The Lua value must be a string or a number; -otherwise, the function returns NULL. -If the value is a number, -then lua_tolstring also -changes the actual value in the stack to a string. -(This change confuses lua_next -when lua_tolstring is applied to keys during a table traversal.) - - -

-lua_tolstring returns a pointer -to a string inside the Lua state. -This string always has a zero ('\0') -after its last character (as in C), -but can contain other zeros in its body. - - -

-Because Lua has garbage collection, -there is no guarantee that the pointer returned by lua_tolstring -will be valid after the corresponding Lua value is removed from the stack. - - - - - -

lua_tonumber

-[-0, +0, –] -

lua_Number lua_tonumber (lua_State *L, int index);
- -

-Equivalent to lua_tonumberx with isnum equal to NULL. - - - - - -

lua_tonumberx

-[-0, +0, –] -

lua_Number lua_tonumberx (lua_State *L, int index, int *isnum);
- -

-Converts the Lua value at the given index -to the C type lua_Number (see lua_Number). -The Lua value must be a number or a string convertible to a number -(see §3.4.3); -otherwise, lua_tonumberx returns 0. - - -

-If isnum is not NULL, -its referent is assigned a boolean value that -indicates whether the operation succeeded. - - - - - -

lua_topointer

-[-0, +0, –] -

const void *lua_topointer (lua_State *L, int index);
- -

-Converts the value at the given index to a generic -C pointer (void*). -The value can be a userdata, a table, a thread, or a function; -otherwise, lua_topointer returns NULL. -Different objects will give different pointers. -There is no way to convert the pointer back to its original value. - - -

-Typically this function is used only for hashing and debug information. - - - - - -

lua_tostring

-[-0, +0, m] -

const char *lua_tostring (lua_State *L, int index);
- -

-Equivalent to lua_tolstring with len equal to NULL. - - - - - -

lua_tothread

-[-0, +0, –] -

lua_State *lua_tothread (lua_State *L, int index);
- -

-Converts the value at the given index to a Lua thread -(represented as lua_State*). -This value must be a thread; -otherwise, the function returns NULL. - - - - - -

lua_touserdata

-[-0, +0, –] -

void *lua_touserdata (lua_State *L, int index);
- -

-If the value at the given index is a full userdata, -returns its block address. -If the value is a light userdata, -returns its pointer. -Otherwise, returns NULL. - - - - - -

lua_type

-[-0, +0, –] -

int lua_type (lua_State *L, int index);
- -

-Returns the type of the value in the given valid index, -or LUA_TNONE for a non-valid (but acceptable) index. -The types returned by lua_type are coded by the following constants -defined in lua.h: -LUA_TNIL (0), -LUA_TNUMBER, -LUA_TBOOLEAN, -LUA_TSTRING, -LUA_TTABLE, -LUA_TFUNCTION, -LUA_TUSERDATA, -LUA_TTHREAD, -and -LUA_TLIGHTUSERDATA. - - - - - -

lua_typename

-[-0, +0, –] -

const char *lua_typename (lua_State *L, int tp);
- -

-Returns the name of the type encoded by the value tp, -which must be one the values returned by lua_type. - - - - - -

lua_Unsigned

-
typedef ... lua_Unsigned;
- -

-The unsigned version of lua_Integer. - - - - - -

lua_upvalueindex

-[-0, +0, –] -

int lua_upvalueindex (int i);
- -

-Returns the pseudo-index that represents the i-th upvalue of -the running function (see §4.4). - - - - - -

lua_version

-[-0, +0, –] -

const lua_Number *lua_version (lua_State *L);
- -

-Returns the address of the version number -(a C static variable) -stored in the Lua core. -When called with a valid lua_State, -returns the address of the version used to create that state. -When called with NULL, -returns the address of the version running the call. - - - - - -

lua_Writer

-
typedef int (*lua_Writer) (lua_State *L,
-                           const void* p,
-                           size_t sz,
-                           void* ud);
- -

-The type of the writer function used by lua_dump. -Every time it produces another piece of chunk, -lua_dump calls the writer, -passing along the buffer to be written (p), -its size (sz), -and the data parameter supplied to lua_dump. - - -

-The writer returns an error code: -0 means no errors; -any other value means an error and stops lua_dump from -calling the writer again. - - - - - -

lua_xmove

-[-?, +?, –] -

void lua_xmove (lua_State *from, lua_State *to, int n);
- -

-Exchange values between different threads of the same state. - - -

-This function pops n values from the stack from, -and pushes them onto the stack to. - - - - - -

lua_yield

-[-?, +?, e] -

int lua_yield (lua_State *L, int nresults);
- -

-This function is equivalent to lua_yieldk, -but it has no continuation (see §4.7). -Therefore, when the thread resumes, -it continues the function that called -the function calling lua_yield. - - - - - -

lua_yieldk

-[-?, +?, e] -

int lua_yieldk (lua_State *L,
-                int nresults,
-                lua_KContext ctx,
-                lua_KFunction k);
- -

-Yields a coroutine (thread). - - -

-When a C function calls lua_yieldk, -the running coroutine suspends its execution, -and the call to lua_resume that started this coroutine returns. -The parameter nresults is the number of values from the stack -that will be passed as results to lua_resume. - - -

-When the coroutine is resumed again, -Lua calls the given continuation function k to continue -the execution of the C function that yielded (see §4.7). -This continuation function receives the same stack -from the previous function, -with the n results removed and -replaced by the arguments passed to lua_resume. -Moreover, -the continuation function receives the value ctx -that was passed to lua_yieldk. - - -

-Usually, this function does not return; -when the coroutine eventually resumes, -it continues executing the continuation function. -However, there is one special case, -which is when this function is called -from inside a line or a count hook (see §4.9). -In that case, lua_yieldk should be called with no continuation -(probably in the form of lua_yield) and no results, -and the hook should return immediately after the call. -Lua will yield and, -when the coroutine resumes again, -it will continue the normal execution -of the (Lua) function that triggered the hook. - - -

-This function can raise an error if it is called from a thread -with a pending C call with no continuation function, -or it is called from a thread that is not running inside a resume -(e.g., the main thread). - - - - - - - -

4.9 – The Debug Interface

- -

-Lua has no built-in debugging facilities. -Instead, it offers a special interface -by means of functions and hooks. -This interface allows the construction of different -kinds of debuggers, profilers, and other tools -that need "inside information" from the interpreter. - - - -

lua_Debug

-
typedef struct lua_Debug {
-  int event;
-  const char *name;           /* (n) */
-  const char *namewhat;       /* (n) */
-  const char *what;           /* (S) */
-  const char *source;         /* (S) */
-  int currentline;            /* (l) */
-  int linedefined;            /* (S) */
-  int lastlinedefined;        /* (S) */
-  unsigned char nups;         /* (u) number of upvalues */
-  unsigned char nparams;      /* (u) number of parameters */
-  char isvararg;              /* (u) */
-  char istailcall;            /* (t) */
-  char short_src[LUA_IDSIZE]; /* (S) */
-  /* private part */
-  other fields
-} lua_Debug;
- -

-A structure used to carry different pieces of -information about a function or an activation record. -lua_getstack fills only the private part -of this structure, for later use. -To fill the other fields of lua_Debug with useful information, -call lua_getinfo. - - -

-The fields of lua_Debug have the following meaning: - -

    - -
  • source: -the name of the chunk that created the function. -If source starts with a '@', -it means that the function was defined in a file where -the file name follows the '@'. -If source starts with a '=', -the remainder of its contents describe the source in a user-dependent manner. -Otherwise, -the function was defined in a string where -source is that string. -
    • - -
  • short_src: -a "printable" version of source, to be used in error messages. -
    • - -
  • linedefined: -the line number where the definition of the function starts. -
    • - -
  • lastlinedefined: -the line number where the definition of the function ends. -
    • - -
  • what: -the string "Lua" if the function is a Lua function, -"C" if it is a C function, -"main" if it is the main part of a chunk. -
    • - -
  • currentline: -the current line where the given function is executing. -When no line information is available, -currentline is set to -1. -
    • - -
  • name: -a reasonable name for the given function. -Because functions in Lua are first-class values, -they do not have a fixed name: -some functions can be the value of multiple global variables, -while others can be stored only in a table field. -The lua_getinfo function checks how the function was -called to find a suitable name. -If it cannot find a name, -then name is set to NULL. -
    • - -
  • namewhat: -explains the name field. -The value of namewhat can be -"global", "local", "method", -"field", "upvalue", or "" (the empty string), -according to how the function was called. -(Lua uses the empty string when no other option seems to apply.) -
    • - -
  • istailcall: -true if this function invocation was called by a tail call. -In this case, the caller of this level is not in the stack. -
    • - -
  • nups: -the number of upvalues of the function. -
    • - -
  • nparams: -the number of fixed parameters of the function -(always 0 for C functions). -
    • - -
  • isvararg: -true if the function is a vararg function -(always true for C functions). -
    • - -
- - - - -

lua_gethook

-[-0, +0, –] -

lua_Hook lua_gethook (lua_State *L);
- -

-Returns the current hook function. - - - - - -

lua_gethookcount

-[-0, +0, –] -

int lua_gethookcount (lua_State *L);
- -

-Returns the current hook count. - - - - - -

lua_gethookmask

-[-0, +0, –] -

int lua_gethookmask (lua_State *L);
- -

-Returns the current hook mask. - - - - - -

lua_getinfo

-[-(0|1), +(0|1|2), e] -

int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar);
- -

-Gets information about a specific function or function invocation. - - -

-To get information about a function invocation, -the parameter ar must be a valid activation record that was -filled by a previous call to lua_getstack or -given as argument to a hook (see lua_Hook). - - -

-To get information about a function you push it onto the stack -and start the what string with the character '>'. -(In that case, -lua_getinfo pops the function from the top of the stack.) -For instance, to know in which line a function f was defined, -you can write the following code: - -

-     lua_Debug ar;
-     lua_getglobal(L, "f");  /* get global 'f' */
-     lua_getinfo(L, ">S", &ar);
-     printf("%d\n", ar.linedefined);
-
- -

-Each character in the string what -selects some fields of the structure ar to be filled or -a value to be pushed on the stack: - -

    - -
  • 'n': fills in the field name and namewhat; -
    • - -
  • 'S': -fills in the fields source, short_src, -linedefined, lastlinedefined, and what; -
    • - -
  • 'l': fills in the field currentline; -
    • - -
  • 't': fills in the field istailcall; -
    • - -
  • 'u': fills in the fields -nups, nparams, and isvararg; -
    • - -
  • 'f': -pushes onto the stack the function that is -running at the given level; -
    • - -
  • 'L': -pushes onto the stack a table whose indices are the -numbers of the lines that are valid on the function. -(A valid line is a line with some associated code, -that is, a line where you can put a break point. -Non-valid lines include empty lines and comments.) - - -

    -If this option is given together with option 'f', -its table is pushed after the function. -

    • - -
- -

-This function returns 0 on error -(for instance, an invalid option in what). - - - - - -

lua_getlocal

-[-0, +(0|1), –] -

const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n);
- -

-Gets information about a local variable of -a given activation record or a given function. - - -

-In the first case, -the parameter ar must be a valid activation record that was -filled by a previous call to lua_getstack or -given as argument to a hook (see lua_Hook). -The index n selects which local variable to inspect; -see debug.getlocal for details about variable indices -and names. - - -

-lua_getlocal pushes the variable's value onto the stack -and returns its name. - - -

-In the second case, ar must be NULL and the function -to be inspected must be at the top of the stack. -In this case, only parameters of Lua functions are visible -(as there is no information about what variables are active) -and no values are pushed onto the stack. - - -

-Returns NULL (and pushes nothing) -when the index is greater than -the number of active local variables. - - - - - -

lua_getstack

-[-0, +0, –] -

int lua_getstack (lua_State *L, int level, lua_Debug *ar);
- -

-Gets information about the interpreter runtime stack. - - -

-This function fills parts of a lua_Debug structure with -an identification of the activation record -of the function executing at a given level. -Level 0 is the current running function, -whereas level n+1 is the function that has called level n -(except for tail calls, which do not count on the stack). -When there are no errors, lua_getstack returns 1; -when called with a level greater than the stack depth, -it returns 0. - - - - - -

lua_getupvalue

-[-0, +(0|1), –] -

const char *lua_getupvalue (lua_State *L, int funcindex, int n);
- -

-Gets information about the n-th upvalue -of the closure at index funcindex. -It pushes the upvalue's value onto the stack -and returns its name. -Returns NULL (and pushes nothing) -when the index n is greater than the number of upvalues. - - -

-For C functions, this function uses the empty string "" -as a name for all upvalues. -(For Lua functions, -upvalues are the external local variables that the function uses, -and that are consequently included in its closure.) - - -

-Upvalues have no particular order, -as they are active through the whole function. -They are numbered in an arbitrary order. - - - - - -

lua_Hook

-
typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar);
- -

-Type for debugging hook functions. - - -

-Whenever a hook is called, its ar argument has its field -event set to the specific event that triggered the hook. -Lua identifies these events with the following constants: -LUA_HOOKCALL, LUA_HOOKRET, -LUA_HOOKTAILCALL, LUA_HOOKLINE, -and LUA_HOOKCOUNT. -Moreover, for line events, the field currentline is also set. -To get the value of any other field in ar, -the hook must call lua_getinfo. - - -

-For call events, event can be LUA_HOOKCALL, -the normal value, or LUA_HOOKTAILCALL, for a tail call; -in this case, there will be no corresponding return event. - - -

-While Lua is running a hook, it disables other calls to hooks. -Therefore, if a hook calls back Lua to execute a function or a chunk, -this execution occurs without any calls to hooks. - - -

-Hook functions cannot have continuations, -that is, they cannot call lua_yieldk, -lua_pcallk, or lua_callk with a non-null k. - - -

-Hook functions can yield under the following conditions: -Only count and line events can yield; -to yield, a hook function must finish its execution -calling lua_yield with nresults equal to zero -(that is, with no values). - - - - - -

lua_sethook

-[-0, +0, –] -

void lua_sethook (lua_State *L, lua_Hook f, int mask, int count);
- -

-Sets the debugging hook function. - - -

-Argument f is the hook function. -mask specifies on which events the hook will be called: -it is formed by a bitwise OR of the constants -LUA_MASKCALL, -LUA_MASKRET, -LUA_MASKLINE, -and LUA_MASKCOUNT. -The count argument is only meaningful when the mask -includes LUA_MASKCOUNT. -For each event, the hook is called as explained below: - -

    - -
  • The call hook: is called when the interpreter calls a function. -The hook is called just after Lua enters the new function, -before the function gets its arguments. -
    • - -
  • The return hook: is called when the interpreter returns from a function. -The hook is called just before Lua leaves the function. -There is no standard way to access the values -to be returned by the function. -
    • - -
  • The line hook: is called when the interpreter is about to -start the execution of a new line of code, -or when it jumps back in the code (even to the same line). -(This event only happens while Lua is executing a Lua function.) -
    • - -
  • The count hook: is called after the interpreter executes every -count instructions. -(This event only happens while Lua is executing a Lua function.) -
    • - -
- -

-A hook is disabled by setting mask to zero. - - - - - -

lua_setlocal

-[-(0|1), +0, –] -

const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n);
- -

-Sets the value of a local variable of a given activation record. -It assigns the value at the top of the stack -to the variable and returns its name. -It also pops the value from the stack. - - -

-Returns NULL (and pops nothing) -when the index is greater than -the number of active local variables. - - -

-Parameters ar and n are as in function lua_getlocal. - - - - - -

lua_setupvalue

-[-(0|1), +0, –] -

const char *lua_setupvalue (lua_State *L, int funcindex, int n);
- -

-Sets the value of a closure's upvalue. -It assigns the value at the top of the stack -to the upvalue and returns its name. -It also pops the value from the stack. - - -

-Returns NULL (and pops nothing) -when the index n is greater than the number of upvalues. - - -

-Parameters funcindex and n are as in function lua_getupvalue. - - - - - -

lua_upvalueid

-[-0, +0, –] -

void *lua_upvalueid (lua_State *L, int funcindex, int n);
- -

-Returns a unique identifier for the upvalue numbered n -from the closure at index funcindex. - - -

-These unique identifiers allow a program to check whether different -closures share upvalues. -Lua closures that share an upvalue -(that is, that access a same external local variable) -will return identical ids for those upvalue indices. - - -

-Parameters funcindex and n are as in function lua_getupvalue, -but n cannot be greater than the number of upvalues. - - - - - -

lua_upvaluejoin

-[-0, +0, –] -

void lua_upvaluejoin (lua_State *L, int funcindex1, int n1,
-                                    int funcindex2, int n2);
- -

-Make the n1-th upvalue of the Lua closure at index funcindex1 -refer to the n2-th upvalue of the Lua closure at index funcindex2. - - - - - - - -

5 – The Auxiliary Library

- -

- -The auxiliary library provides several convenient functions -to interface C with Lua. -While the basic API provides the primitive functions for all -interactions between C and Lua, -the auxiliary library provides higher-level functions for some -common tasks. - - -

-All functions and types from the auxiliary library -are defined in header file lauxlib.h and -have a prefix luaL_. - - -

-All functions in the auxiliary library are built on -top of the basic API, -and so they provide nothing that cannot be done with that API. -Nevertheless, the use of the auxiliary library ensures -more consistency to your code. - - -

-Several functions in the auxiliary library use internally some -extra stack slots. -When a function in the auxiliary library uses less than five slots, -it does not check the stack size; -it simply assumes that there are enough slots. - - -

-Several functions in the auxiliary library are used to -check C function arguments. -Because the error message is formatted for arguments -(e.g., "bad argument #1"), -you should not use these functions for other stack values. - - -

-Functions called luaL_check* -always raise an error if the check is not satisfied. - - - -

5.1 – Functions and Types

- -

-Here we list all functions and types from the auxiliary library -in alphabetical order. - - - -

luaL_addchar

-[-?, +?, m] -

void luaL_addchar (luaL_Buffer *B, char c);
- -

-Adds the byte c to the buffer B -(see luaL_Buffer). - - - - - -

luaL_addlstring

-[-?, +?, m] -

void luaL_addlstring (luaL_Buffer *B, const char *s, size_t l);
- -

-Adds the string pointed to by s with length l to -the buffer B -(see luaL_Buffer). -The string can contain embedded zeros. - - - - - -

luaL_addsize

-[-?, +?, –] -

void luaL_addsize (luaL_Buffer *B, size_t n);
- -

-Adds to the buffer B (see luaL_Buffer) -a string of length n previously copied to the -buffer area (see luaL_prepbuffer). - - - - - -

luaL_addstring

-[-?, +?, m] -

void luaL_addstring (luaL_Buffer *B, const char *s);
- -

-Adds the zero-terminated string pointed to by s -to the buffer B -(see luaL_Buffer). - - - - - -

luaL_addvalue

-[-1, +?, m] -

void luaL_addvalue (luaL_Buffer *B);
- -

-Adds the value at the top of the stack -to the buffer B -(see luaL_Buffer). -Pops the value. - - -

-This is the only function on string buffers that can (and must) -be called with an extra element on the stack, -which is the value to be added to the buffer. - - - - - -

luaL_argcheck

-[-0, +0, v] -

void luaL_argcheck (lua_State *L,
-                    int cond,
-                    int arg,
-                    const char *extramsg);
- -

-Checks whether cond is true. -If it is not, raises an error with a standard message (see luaL_argerror). - - - - - -

luaL_argerror

-[-0, +0, v] -

int luaL_argerror (lua_State *L, int arg, const char *extramsg);
- -

-Raises an error reporting a problem with argument arg -of the C function that called it, -using a standard message -that includes extramsg as a comment: - -

-     bad argument #arg to 'funcname' (extramsg)
-

-This function never returns. - - - - - -

luaL_Buffer

-
typedef struct luaL_Buffer luaL_Buffer;
- -

-Type for a string buffer. - - -

-A string buffer allows C code to build Lua strings piecemeal. -Its pattern of use is as follows: - -

    - -
  • First declare a variable b of type luaL_Buffer.
    • - -
  • Then initialize it with a call luaL_buffinit(L, &b).
    • - -
  • -Then add string pieces to the buffer calling any of -the luaL_add* functions. -
    • - -
  • -Finish by calling luaL_pushresult(&b). -This call leaves the final string on the top of the stack. -
    • - -
- -

-If you know beforehand the total size of the resulting string, -you can use the buffer like this: - -

    - -
  • First declare a variable b of type luaL_Buffer.
    • - -
  • Then initialize it and preallocate a space of -size sz with a call luaL_buffinitsize(L, &b, sz).
    • - -
  • Then copy the string into that space.
    • - -
  • -Finish by calling luaL_pushresultsize(&b, sz), -where sz is the total size of the resulting string -copied into that space. -
    • - -
- -

-During its normal operation, -a string buffer uses a variable number of stack slots. -So, while using a buffer, you cannot assume that you know where -the top of the stack is. -You can use the stack between successive calls to buffer operations -as long as that use is balanced; -that is, -when you call a buffer operation, -the stack is at the same level -it was immediately after the previous buffer operation. -(The only exception to this rule is luaL_addvalue.) -After calling luaL_pushresult the stack is back to its -level when the buffer was initialized, -plus the final string on its top. - - - - - -

luaL_buffinit

-[-0, +0, –] -

void luaL_buffinit (lua_State *L, luaL_Buffer *B);
- -

-Initializes a buffer B. -This function does not allocate any space; -the buffer must be declared as a variable -(see luaL_Buffer). - - - - - -

luaL_buffinitsize

-[-?, +?, m] -

char *luaL_buffinitsize (lua_State *L, luaL_Buffer *B, size_t sz);
- -

-Equivalent to the sequence -luaL_buffinit, luaL_prepbuffsize. - - - - - -

luaL_callmeta

-[-0, +(0|1), e] -

int luaL_callmeta (lua_State *L, int obj, const char *e);
- -

-Calls a metamethod. - - -

-If the object at index obj has a metatable and this -metatable has a field e, -this function calls this field passing the object as its only argument. -In this case this function returns true and pushes onto the -stack the value returned by the call. -If there is no metatable or no metamethod, -this function returns false (without pushing any value on the stack). - - - - - -

luaL_checkany

-[-0, +0, v] -

void luaL_checkany (lua_State *L, int arg);
- -

-Checks whether the function has an argument -of any type (including nil) at position arg. - - - - - -

luaL_checkinteger

-[-0, +0, v] -

lua_Integer luaL_checkinteger (lua_State *L, int arg);
- -

-Checks whether the function argument arg is an integer -(or can be converted to an integer) -and returns this integer cast to a lua_Integer. - - - - - -

luaL_checklstring

-[-0, +0, v] -

const char *luaL_checklstring (lua_State *L, int arg, size_t *l);
- -

-Checks whether the function argument arg is a string -and returns this string; -if l is not NULL fills *l -with the string's length. - - -

-This function uses lua_tolstring to get its result, -so all conversions and caveats of that function apply here. - - - - - -

luaL_checknumber

-[-0, +0, v] -

lua_Number luaL_checknumber (lua_State *L, int arg);
- -

-Checks whether the function argument arg is a number -and returns this number. - - - - - -

luaL_checkoption

-[-0, +0, v] -

int luaL_checkoption (lua_State *L,
-                      int arg,
-                      const char *def,
-                      const char *const lst[]);
- -

-Checks whether the function argument arg is a string and -searches for this string in the array lst -(which must be NULL-terminated). -Returns the index in the array where the string was found. -Raises an error if the argument is not a string or -if the string cannot be found. - - -

-If def is not NULL, -the function uses def as a default value when -there is no argument arg or when this argument is nil. - - -

-This is a useful function for mapping strings to C enums. -(The usual convention in Lua libraries is -to use strings instead of numbers to select options.) - - - - - -

luaL_checkstack

-[-0, +0, v] -

void luaL_checkstack (lua_State *L, int sz, const char *msg);
- -

-Grows the stack size to top + sz elements, -raising an error if the stack cannot grow to that size. -msg is an additional text to go into the error message -(or NULL for no additional text). - - - - - -

luaL_checkstring

-[-0, +0, v] -

const char *luaL_checkstring (lua_State *L, int arg);
- -

-Checks whether the function argument arg is a string -and returns this string. - - -

-This function uses lua_tolstring to get its result, -so all conversions and caveats of that function apply here. - - - - - -

luaL_checktype

-[-0, +0, v] -

void luaL_checktype (lua_State *L, int arg, int t);
- -

-Checks whether the function argument arg has type t. -See lua_type for the encoding of types for t. - - - - - -

luaL_checkudata

-[-0, +0, v] -

void *luaL_checkudata (lua_State *L, int arg, const char *tname);
- -

-Checks whether the function argument arg is a userdata -of the type tname (see luaL_newmetatable) and -returns the userdata address (see lua_touserdata). - - - - - -

luaL_checkversion

-[-0, +0, v] -

void luaL_checkversion (lua_State *L);
- -

-Checks whether the core running the call, -the core that created the Lua state, -and the code making the call are all using the same version of Lua. -Also checks whether the core running the call -and the core that created the Lua state -are using the same address space. - - - - - -

luaL_dofile

-[-0, +?, e] -

int luaL_dofile (lua_State *L, const char *filename);
- -

-Loads and runs the given file. -It is defined as the following macro: - -

-     (luaL_loadfile(L, filename) || lua_pcall(L, 0, LUA_MULTRET, 0))
-

-It returns false if there are no errors -or true in case of errors. - - - - - -

luaL_dostring

-[-0, +?, –] -

int luaL_dostring (lua_State *L, const char *str);
- -

-Loads and runs the given string. -It is defined as the following macro: - -

-     (luaL_loadstring(L, str) || lua_pcall(L, 0, LUA_MULTRET, 0))
-

-It returns false if there are no errors -or true in case of errors. - - - - - -

luaL_error

-[-0, +0, v] -

int luaL_error (lua_State *L, const char *fmt, ...);
- -

-Raises an error. -The error message format is given by fmt -plus any extra arguments, -following the same rules of lua_pushfstring. -It also adds at the beginning of the message the file name and -the line number where the error occurred, -if this information is available. - - -

-This function never returns, -but it is an idiom to use it in C functions -as return luaL_error(args). - - - - - -

luaL_execresult

-[-0, +3, m] -

int luaL_execresult (lua_State *L, int stat);
- -

-This function produces the return values for -process-related functions in the standard library -(os.execute and io.close). - - - - - -

luaL_fileresult

-[-0, +(1|3), m] -

int luaL_fileresult (lua_State *L, int stat, const char *fname);
- -

-This function produces the return values for -file-related functions in the standard library -(io.open, os.rename, file:seek, etc.). - - - - - -

luaL_getmetafield

-[-0, +(0|1), m] -

int luaL_getmetafield (lua_State *L, int obj, const char *e);
- -

-Pushes onto the stack the field e from the metatable -of the object at index obj and returns the type of pushed value. -If the object does not have a metatable, -or if the metatable does not have this field, -pushes nothing and returns LUA_TNIL. - - - - - -

luaL_getmetatable

-[-0, +1, m] -

int luaL_getmetatable (lua_State *L, const char *tname);
- -

-Pushes onto the stack the metatable associated with name tname -in the registry (see luaL_newmetatable) -(nil if there is no metatable associated with that name). -Returns the type of the pushed value. - - - - - -

luaL_getsubtable

-[-0, +1, e] -

int luaL_getsubtable (lua_State *L, int idx, const char *fname);
- -

-Ensures that the value t[fname], -where t is the value at index idx, -is a table, -and pushes that table onto the stack. -Returns true if it finds a previous table there -and false if it creates a new table. - - - - - -

luaL_gsub

-[-0, +1, m] -

const char *luaL_gsub (lua_State *L,
-                       const char *s,
-                       const char *p,
-                       const char *r);
- -

-Creates a copy of string s by replacing -any occurrence of the string p -with the string r. -Pushes the resulting string on the stack and returns it. - - - - - -

luaL_len

-[-0, +0, e] -

lua_Integer luaL_len (lua_State *L, int index);
- -

-Returns the "length" of the value at the given index -as a number; -it is equivalent to the '#' operator in Lua (see §3.4.7). -Raises an error if the result of the operation is not an integer. -(This case only can happen through metamethods.) - - - - - -

luaL_loadbuffer

-[-0, +1, –] -

int luaL_loadbuffer (lua_State *L,
-                     const char *buff,
-                     size_t sz,
-                     const char *name);
- -

-Equivalent to luaL_loadbufferx with mode equal to NULL. - - - - - -

luaL_loadbufferx

-[-0, +1, –] -

int luaL_loadbufferx (lua_State *L,
-                      const char *buff,
-                      size_t sz,
-                      const char *name,
-                      const char *mode);
- -

-Loads a buffer as a Lua chunk. -This function uses lua_load to load the chunk in the -buffer pointed to by buff with size sz. - - -

-This function returns the same results as lua_load. -name is the chunk name, -used for debug information and error messages. -The string mode works as in function lua_load. - - - - - -

luaL_loadfile

-[-0, +1, m] -

int luaL_loadfile (lua_State *L, const char *filename);
- -

-Equivalent to luaL_loadfilex with mode equal to NULL. - - - - - -

luaL_loadfilex

-[-0, +1, m] -

int luaL_loadfilex (lua_State *L, const char *filename,
-                                            const char *mode);
- -

-Loads a file as a Lua chunk. -This function uses lua_load to load the chunk in the file -named filename. -If filename is NULL, -then it loads from the standard input. -The first line in the file is ignored if it starts with a #. - - -

-The string mode works as in function lua_load. - - -

-This function returns the same results as lua_load, -but it has an extra error code LUA_ERRFILE -for file-related errors -(e.g., it cannot open or read the file). - - -

-As lua_load, this function only loads the chunk; -it does not run it. - - - - - -

luaL_loadstring

-[-0, +1, –] -

int luaL_loadstring (lua_State *L, const char *s);
- -

-Loads a string as a Lua chunk. -This function uses lua_load to load the chunk in -the zero-terminated string s. - - -

-This function returns the same results as lua_load. - - -

-Also as lua_load, this function only loads the chunk; -it does not run it. - - - - - -

luaL_newlib

-[-0, +1, m] -

void luaL_newlib (lua_State *L, const luaL_Reg l[]);
- -

-Creates a new table and registers there -the functions in list l. - - -

-It is implemented as the following macro: - -

-     (luaL_newlibtable(L,l), luaL_setfuncs(L,l,0))
-

-The array l must be the actual array, -not a pointer to it. - - - - - -

luaL_newlibtable

-[-0, +1, m] -

void luaL_newlibtable (lua_State *L, const luaL_Reg l[]);
- -

-Creates a new table with a size optimized -to store all entries in the array l -(but does not actually store them). -It is intended to be used in conjunction with luaL_setfuncs -(see luaL_newlib). - - -

-It is implemented as a macro. -The array l must be the actual array, -not a pointer to it. - - - - - -

luaL_newmetatable

-[-0, +1, m] -

int luaL_newmetatable (lua_State *L, const char *tname);
- -

-If the registry already has the key tname, -returns 0. -Otherwise, -creates a new table to be used as a metatable for userdata, -adds to this new table the pair __name = tname, -adds to the registry the pair [tname] = new table, -and returns 1. -(The entry __name is used by some error-reporting functions.) - - -

-In both cases pushes onto the stack the final value associated -with tname in the registry. - - - - - -

luaL_newstate

-[-0, +0, –] -

lua_State *luaL_newstate (void);
- -

-Creates a new Lua state. -It calls lua_newstate with an -allocator based on the standard C realloc function -and then sets a panic function (see §4.6) that prints -an error message to the standard error output in case of fatal -errors. - - -

-Returns the new state, -or NULL if there is a memory allocation error. - - - - - -

luaL_openlibs

-[-0, +0, e] -

void luaL_openlibs (lua_State *L);
- -

-Opens all standard Lua libraries into the given state. - - - - - -

luaL_opt

-[-0, +0, e] -

T luaL_opt (L, func, arg, dflt);
- -

-This macro is defined as follows: - -

-     (lua_isnoneornil(L,(arg)) ? (dflt) : func(L,(arg)))
-

-In words, if the argument arg is nil or absent, -the macro results in the default dflt. -Otherwise, it results in the result of calling func -with the state L and the argument index arg as -parameters. -Note that it evaluates the expression dflt only if needed. - - - - - -

luaL_optinteger

-[-0, +0, v] -

lua_Integer luaL_optinteger (lua_State *L,
-                             int arg,
-                             lua_Integer d);
- -

-If the function argument arg is an integer -(or convertible to an integer), -returns this integer. -If this argument is absent or is nil, -returns d. -Otherwise, raises an error. - - - - - -

luaL_optlstring

-[-0, +0, v] -

const char *luaL_optlstring (lua_State *L,
-                             int arg,
-                             const char *d,
-                             size_t *l);
- -

-If the function argument arg is a string, -returns this string. -If this argument is absent or is nil, -returns d. -Otherwise, raises an error. - - -

-If l is not NULL, -fills the position *l with the result's length. -If the result is NULL -(only possible when returning d and d == NULL), -its length is considered zero. - - -

-This function uses lua_tolstring to get its result, -so all conversions and caveats of that function apply here. - - - - - -

luaL_optnumber

-[-0, +0, v] -

lua_Number luaL_optnumber (lua_State *L, int arg, lua_Number d);
- -

-If the function argument arg is a number, -returns this number. -If this argument is absent or is nil, -returns d. -Otherwise, raises an error. - - - - - -

luaL_optstring

-[-0, +0, v] -

const char *luaL_optstring (lua_State *L,
-                            int arg,
-                            const char *d);
- -

-If the function argument arg is a string, -returns this string. -If this argument is absent or is nil, -returns d. -Otherwise, raises an error. - - - - - -

luaL_prepbuffer

-[-?, +?, m] -

char *luaL_prepbuffer (luaL_Buffer *B);
- -

-Equivalent to luaL_prepbuffsize -with the predefined size LUAL_BUFFERSIZE. - - - - - -

luaL_prepbuffsize

-[-?, +?, m] -

char *luaL_prepbuffsize (luaL_Buffer *B, size_t sz);
- -

-Returns an address to a space of size sz -where you can copy a string to be added to buffer B -(see luaL_Buffer). -After copying the string into this space you must call -luaL_addsize with the size of the string to actually add -it to the buffer. - - - - - -

luaL_pushresult

-[-?, +1, m] -

void luaL_pushresult (luaL_Buffer *B);
- -

-Finishes the use of buffer B leaving the final string on -the top of the stack. - - - - - -

luaL_pushresultsize

-[-?, +1, m] -

void luaL_pushresultsize (luaL_Buffer *B, size_t sz);
- -

-Equivalent to the sequence luaL_addsize, luaL_pushresult. - - - - - -

luaL_ref

-[-1, +0, m] -

int luaL_ref (lua_State *L, int t);
- -

-Creates and returns a reference, -in the table at index t, -for the object at the top of the stack (and pops the object). - - -

-A reference is a unique integer key. -As long as you do not manually add integer keys into table t, -luaL_ref ensures the uniqueness of the key it returns. -You can retrieve an object referred by reference r -by calling lua_rawgeti(L, t, r). -Function luaL_unref frees a reference and its associated object. - - -

-If the object at the top of the stack is nil, -luaL_ref returns the constant LUA_REFNIL. -The constant LUA_NOREF is guaranteed to be different -from any reference returned by luaL_ref. - - - - - -

luaL_Reg

-
typedef struct luaL_Reg {
-  const char *name;
-  lua_CFunction func;
-} luaL_Reg;
- -

-Type for arrays of functions to be registered by -luaL_setfuncs. -name is the function name and func is a pointer to -the function. -Any array of luaL_Reg must end with a sentinel entry -in which both name and func are NULL. - - - - - -

luaL_requiref

-[-0, +1, e] -

void luaL_requiref (lua_State *L, const char *modname,
-                    lua_CFunction openf, int glb);
- -

-If modname is not already present in package.loaded, -calls function openf with string modname as an argument -and sets the call result in package.loaded[modname], -as if that function has been called through require. - - -

-If glb is true, -also stores the module into global modname. - - -

-Leaves a copy of the module on the stack. - - - - - -

luaL_setfuncs

-[-nup, +0, m] -

void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup);
- -

-Registers all functions in the array l -(see luaL_Reg) into the table on the top of the stack -(below optional upvalues, see next). - - -

-When nup is not zero, -all functions are created sharing nup upvalues, -which must be previously pushed on the stack -on top of the library table. -These values are popped from the stack after the registration. - - - - - -

luaL_setmetatable

-[-0, +0, –] -

void luaL_setmetatable (lua_State *L, const char *tname);
- -

-Sets the metatable of the object at the top of the stack -as the metatable associated with name tname -in the registry (see luaL_newmetatable). - - - - - -

luaL_Stream

-
typedef struct luaL_Stream {
-  FILE *f;
-  lua_CFunction closef;
-} luaL_Stream;
- -

-The standard representation for file handles, -which is used by the standard I/O library. - - -

-A file handle is implemented as a full userdata, -with a metatable called LUA_FILEHANDLE -(where LUA_FILEHANDLE is a macro with the actual metatable's name). -The metatable is created by the I/O library -(see luaL_newmetatable). - - -

-This userdata must start with the structure luaL_Stream; -it can contain other data after this initial structure. -Field f points to the corresponding C stream -(or it can be NULL to indicate an incompletely created handle). -Field closef points to a Lua function -that will be called to close the stream -when the handle is closed or collected; -this function receives the file handle as its sole argument and -must return either true (in case of success) -or nil plus an error message (in case of error). -Once Lua calls this field, -it changes the field value to NULL -to signal that the handle is closed. - - - - - -

luaL_testudata

-[-0, +0, m] -

void *luaL_testudata (lua_State *L, int arg, const char *tname);
- -

-This function works like luaL_checkudata, -except that, when the test fails, -it returns NULL instead of raising an error. - - - - - -

luaL_tolstring

-[-0, +1, e] -

const char *luaL_tolstring (lua_State *L, int idx, size_t *len);
- -

-Converts any Lua value at the given index to a C string -in a reasonable format. -The resulting string is pushed onto the stack and also -returned by the function. -If len is not NULL, -the function also sets *len with the string length. - - -

-If the value has a metatable with a __tostring field, -then luaL_tolstring calls the corresponding metamethod -with the value as argument, -and uses the result of the call as its result. - - - - - -

luaL_traceback

-[-0, +1, m] -

void luaL_traceback (lua_State *L, lua_State *L1, const char *msg,
-                     int level);
- -

-Creates and pushes a traceback of the stack L1. -If msg is not NULL it is appended -at the beginning of the traceback. -The level parameter tells at which level -to start the traceback. - - - - - -

luaL_typename

-[-0, +0, –] -

const char *luaL_typename (lua_State *L, int index);
- -

-Returns the name of the type of the value at the given index. - - - - - -

luaL_unref

-[-0, +0, –] -

void luaL_unref (lua_State *L, int t, int ref);
- -

-Releases reference ref from the table at index t -(see luaL_ref). -The entry is removed from the table, -so that the referred object can be collected. -The reference ref is also freed to be used again. - - -

-If ref is LUA_NOREF or LUA_REFNIL, -luaL_unref does nothing. - - - - - -

luaL_where

-[-0, +1, m] -

void luaL_where (lua_State *L, int lvl);
- -

-Pushes onto the stack a string identifying the current position -of the control at level lvl in the call stack. -Typically this string has the following format: - -

-     chunkname:currentline:
-

-Level 0 is the running function, -level 1 is the function that called the running function, -etc. - - -

-This function is used to build a prefix for error messages. - - - - - - - -

6 – Standard Libraries

- -

-The standard Lua libraries provide useful functions -that are implemented directly through the C API. -Some of these functions provide essential services to the language -(e.g., type and getmetatable); -others provide access to "outside" services (e.g., I/O); -and others could be implemented in Lua itself, -but are quite useful or have critical performance requirements that -deserve an implementation in C (e.g., table.sort). - - -

-All libraries are implemented through the official C API -and are provided as separate C modules. -Currently, Lua has the following standard libraries: - -

    - -
  • basic library (§6.1);
    • - -
  • coroutine library (§6.2);
    • - -
  • package library (§6.3);
    • - -
  • string manipulation (§6.4);
    • - -
  • basic UTF-8 support (§6.5);
    • - -
  • table manipulation (§6.6);
    • - -
  • mathematical functions (§6.7) (sin, log, etc.);
    • - -
  • input and output (§6.8);
    • - -
  • operating system facilities (§6.9);
    • - -
  • debug facilities (§6.10).
    • - -

-Except for the basic and the package libraries, -each library provides all its functions as fields of a global table -or as methods of its objects. - - -

-To have access to these libraries, -the C host program should call the luaL_openlibs function, -which opens all standard libraries. -Alternatively, -the host program can open them individually by using -luaL_requiref to call -luaopen_base (for the basic library), -luaopen_package (for the package library), -luaopen_coroutine (for the coroutine library), -luaopen_string (for the string library), -luaopen_utf8 (for the UTF8 library), -luaopen_table (for the table library), -luaopen_math (for the mathematical library), -luaopen_io (for the I/O library), -luaopen_os (for the operating system library), -and luaopen_debug (for the debug library). -These functions are declared in lualib.h. - - - -

6.1 – Basic Functions

- -

-The basic library provides core functions to Lua. -If you do not include this library in your application, -you should check carefully whether you need to provide -implementations for some of its facilities. - - -

-

assert (v [, message])

- - -

-Calls error if -the value of its argument v is false (i.e., nil or false); -otherwise, returns all its arguments. -In case of error, -message is the error object; -when absent, it defaults to "assertion failed!" - - - - -

-

collectgarbage ([opt [, arg]])

- - -

-This function is a generic interface to the garbage collector. -It performs different functions according to its first argument, opt: - -

    - -
  • "collect": -performs a full garbage-collection cycle. -This is the default option. -
    • - -
  • "stop": -stops automatic execution of the garbage collector. -The collector will run only when explicitly invoked, -until a call to restart it. -
    • - -
  • "restart": -restarts automatic execution of the garbage collector. -
    • - -
  • "count": -returns the total memory in use by Lua in Kbytes. -The value has a fractional part, -so that it multiplied by 1024 -gives the exact number of bytes in use by Lua -(except for overflows). -
    • - -
  • "step": -performs a garbage-collection step. -The step "size" is controlled by arg. -With a zero value, -the collector will perform one basic (indivisible) step. -For non-zero values, -the collector will perform as if that amount of memory -(in KBytes) had been allocated by Lua. -Returns true if the step finished a collection cycle. -
    • - -
  • "setpause": -sets arg as the new value for the pause of -the collector (see §2.5). -Returns the previous value for pause. -
    • - -
  • "setstepmul": -sets arg as the new value for the step multiplier of -the collector (see §2.5). -Returns the previous value for step. -
    • - -
  • "isrunning": -returns a boolean that tells whether the collector is running -(i.e., not stopped). -
    • - -
- - - -

-

dofile ([filename])

-Opens the named file and executes its contents as a Lua chunk. -When called without arguments, -dofile executes the contents of the standard input (stdin). -Returns all values returned by the chunk. -In case of errors, dofile propagates the error -to its caller (that is, dofile does not run in protected mode). - - - - -

-

error (message [, level])

-Terminates the last protected function called -and returns message as the error object. -Function error never returns. - - -

-Usually, error adds some information about the error position -at the beginning of the message, if the message is a string. -The level argument specifies how to get the error position. -With level 1 (the default), the error position is where the -error function was called. -Level 2 points the error to where the function -that called error was called; and so on. -Passing a level 0 avoids the addition of error position information -to the message. - - - - -

-

_G

-A global variable (not a function) that -holds the global environment (see §2.2). -Lua itself does not use this variable; -changing its value does not affect any environment, -nor vice versa. - - - - -

-

getmetatable (object)

- - -

-If object does not have a metatable, returns nil. -Otherwise, -if the object's metatable has a __metatable field, -returns the associated value. -Otherwise, returns the metatable of the given object. - - - - -

-

ipairs (t)

- - -

-Returns three values (an iterator function, the table t, and 0) -so that the construction - -

-     for i,v in ipairs(t) do body end
-

-will iterate over the key–value pairs -(1,t[1]), (2,t[2]), ..., -up to the first nil value. - - - - -

-

load (chunk [, chunkname [, mode [, env]]])

- - -

-Loads a chunk. - - -

-If chunk is a string, the chunk is this string. -If chunk is a function, -load calls it repeatedly to get the chunk pieces. -Each call to chunk must return a string that concatenates -with previous results. -A return of an empty string, nil, or no value signals the end of the chunk. - - -

-If there are no syntactic errors, -returns the compiled chunk as a function; -otherwise, returns nil plus the error message. - - -

-If the resulting function has upvalues, -the first upvalue is set to the value of env, -if that parameter is given, -or to the value of the global environment. -Other upvalues are initialized with nil. -(When you load a main chunk, -the resulting function will always have exactly one upvalue, -the _ENV variable (see §2.2). -However, -when you load a binary chunk created from a function (see string.dump), -the resulting function can have an arbitrary number of upvalues.) -All upvalues are fresh, that is, -they are not shared with any other function. - - -

-chunkname is used as the name of the chunk for error messages -and debug information (see §4.9). -When absent, -it defaults to chunk, if chunk is a string, -or to "=(load)" otherwise. - - -

-The string mode controls whether the chunk can be text or binary -(that is, a precompiled chunk). -It may be the string "b" (only binary chunks), -"t" (only text chunks), -or "bt" (both binary and text). -The default is "bt". - - -

-Lua does not check the consistency of binary chunks. -Maliciously crafted binary chunks can crash -the interpreter. - - - - -

-

loadfile ([filename [, mode [, env]]])

- - -

-Similar to load, -but gets the chunk from file filename -or from the standard input, -if no file name is given. - - - - -

-

next (table [, index])

- - -

-Allows a program to traverse all fields of a table. -Its first argument is a table and its second argument -is an index in this table. -next returns the next index of the table -and its associated value. -When called with nil as its second argument, -next returns an initial index -and its associated value. -When called with the last index, -or with nil in an empty table, -next returns nil. -If the second argument is absent, then it is interpreted as nil. -In particular, -you can use next(t) to check whether a table is empty. - - -

-The order in which the indices are enumerated is not specified, -even for numeric indices. -(To traverse a table in numerical order, -use a numerical for.) - - -

-The behavior of next is undefined if, -during the traversal, -you assign any value to a non-existent field in the table. -You may however modify existing fields. -In particular, you may clear existing fields. - - - - -

-

pairs (t)

- - -

-If t has a metamethod __pairs, -calls it with t as argument and returns the first three -results from the call. - - -

-Otherwise, -returns three values: the next function, the table t, and nil, -so that the construction - -

-     for k,v in pairs(t) do body end
-

-will iterate over all key–value pairs of table t. - - -

-See function next for the caveats of modifying -the table during its traversal. - - - - -

-

pcall (f [, arg1, ···])

- - -

-Calls function f with -the given arguments in protected mode. -This means that any error inside f is not propagated; -instead, pcall catches the error -and returns a status code. -Its first result is the status code (a boolean), -which is true if the call succeeds without errors. -In such case, pcall also returns all results from the call, -after this first result. -In case of any error, pcall returns false plus the error message. - - - - -

-

print (···)

-Receives any number of arguments -and prints their values to stdout, -using the tostring function to convert each argument to a string. -print is not intended for formatted output, -but only as a quick way to show a value, -for instance for debugging. -For complete control over the output, -use string.format and io.write. - - - - -

-

rawequal (v1, v2)

-Checks whether v1 is equal to v2, -without invoking the __eq metamethod. -Returns a boolean. - - - - -

-

rawget (table, index)

-Gets the real value of table[index], -without invoking the __index metamethod. -table must be a table; -index may be any value. - - - - -

-

rawlen (v)

-Returns the length of the object v, -which must be a table or a string, -without invoking the __len metamethod. -Returns an integer. - - - - -

-

rawset (table, index, value)

-Sets the real value of table[index] to value, -without invoking the __newindex metamethod. -table must be a table, -index any value different from nil and NaN, -and value any Lua value. - - -

-This function returns table. - - - - -

-

select (index, ···)

- - -

-If index is a number, -returns all arguments after argument number index; -a negative number indexes from the end (-1 is the last argument). -Otherwise, index must be the string "#", -and select returns the total number of extra arguments it received. - - - - -

-

setmetatable (table, metatable)

- - -

-Sets the metatable for the given table. -(To change the metatable of other types from Lua code, -you must use the debug library (§6.10).) -If metatable is nil, -removes the metatable of the given table. -If the original metatable has a __metatable field, -raises an error. - - -

-This function returns table. - - - - -

-

tonumber (e [, base])

- - -

-When called with no base, -tonumber tries to convert its argument to a number. -If the argument is already a number or -a string convertible to a number, -then tonumber returns this number; -otherwise, it returns nil. - - -

-The conversion of strings can result in integers or floats, -according to the lexical conventions of Lua (see §3.1). -(The string may have leading and trailing spaces and a sign.) - - -

-When called with base, -then e must be a string to be interpreted as -an integer numeral in that base. -The base may be any integer between 2 and 36, inclusive. -In bases above 10, the letter 'A' (in either upper or lower case) -represents 10, 'B' represents 11, and so forth, -with 'Z' representing 35. -If the string e is not a valid numeral in the given base, -the function returns nil. - - - - -

-

tostring (v)

-Receives a value of any type and -converts it to a string in a human-readable format. -(For complete control of how numbers are converted, -use string.format.) - - -

-If the metatable of v has a __tostring field, -then tostring calls the corresponding value -with v as argument, -and uses the result of the call as its result. - - - - -

-

type (v)

-Returns the type of its only argument, coded as a string. -The possible results of this function are -"nil" (a string, not the value nil), -"number", -"string", -"boolean", -"table", -"function", -"thread", -and "userdata". - - - - -

-

_VERSION

- - -

-A global variable (not a function) that -holds a string containing the running Lua version. -The current value of this variable is "Lua 5.3". - - - - -

-

xpcall (f, msgh [, arg1, ···])

- - -

-This function is similar to pcall, -except that it sets a new message handler msgh. - - - - - - - -

6.2 – Coroutine Manipulation

- -

-This library comprises the operations to manipulate coroutines, -which come inside the table coroutine. -See §2.6 for a general description of coroutines. - - -

-

coroutine.create (f)

- - -

-Creates a new coroutine, with body f. -f must be a function. -Returns this new coroutine, -an object with type "thread". - - - - -

-

coroutine.isyieldable ()

- - -

-Returns true when the running coroutine can yield. - - -

-A running coroutine is yieldable if it is not the main thread and -it is not inside a non-yieldable C function. - - - - -

-

coroutine.resume (co [, val1, ···])

- - -

-Starts or continues the execution of coroutine co. -The first time you resume a coroutine, -it starts running its body. -The values val1, ... are passed -as the arguments to the body function. -If the coroutine has yielded, -resume restarts it; -the values val1, ... are passed -as the results from the yield. - - -

-If the coroutine runs without any errors, -resume returns true plus any values passed to yield -(when the coroutine yields) or any values returned by the body function -(when the coroutine terminates). -If there is any error, -resume returns false plus the error message. - - - - -

-

coroutine.running ()

- - -

-Returns the running coroutine plus a boolean, -true when the running coroutine is the main one. - - - - -

-

coroutine.status (co)

- - -

-Returns the status of coroutine co, as a string: -"running", -if the coroutine is running (that is, it called status); -"suspended", if the coroutine is suspended in a call to yield, -or if it has not started running yet; -"normal" if the coroutine is active but not running -(that is, it has resumed another coroutine); -and "dead" if the coroutine has finished its body function, -or if it has stopped with an error. - - - - -

-

coroutine.wrap (f)

- - -

-Creates a new coroutine, with body f. -f must be a function. -Returns a function that resumes the coroutine each time it is called. -Any arguments passed to the function behave as the -extra arguments to resume. -Returns the same values returned by resume, -except the first boolean. -In case of error, propagates the error. - - - - -

-

coroutine.yield (···)

- - -

-Suspends the execution of the calling coroutine. -Any arguments to yield are passed as extra results to resume. - - - - - - - -

6.3 – Modules

- -

-The package library provides basic -facilities for loading modules in Lua. -It exports one function directly in the global environment: -require. -Everything else is exported in a table package. - - -

-

require (modname)

- - -

-Loads the given module. -The function starts by looking into the package.loaded table -to determine whether modname is already loaded. -If it is, then require returns the value stored -at package.loaded[modname]. -Otherwise, it tries to find a loader for the module. - - -

-To find a loader, -require is guided by the package.searchers sequence. -By changing this sequence, -we can change how require looks for a module. -The following explanation is based on the default configuration -for package.searchers. - - -

-First require queries package.preload[modname]. -If it has a value, -this value (which must be a function) is the loader. -Otherwise require searches for a Lua loader using the -path stored in package.path. -If that also fails, it searches for a C loader using the -path stored in package.cpath. -If that also fails, -it tries an all-in-one loader (see package.searchers). - - -

-Once a loader is found, -require calls the loader with two arguments: -modname and an extra value dependent on how it got the loader. -(If the loader came from a file, -this extra value is the file name.) -If the loader returns any non-nil value, -require assigns the returned value to package.loaded[modname]. -If the loader does not return a non-nil value and -has not assigned any value to package.loaded[modname], -then require assigns true to this entry. -In any case, require returns the -final value of package.loaded[modname]. - - -

-If there is any error loading or running the module, -or if it cannot find any loader for the module, -then require raises an error. - - - - -

-

package.config

- - -

-A string describing some compile-time configurations for packages. -This string is a sequence of lines: - -

    - -
  • The first line is the directory separator string. -Default is '\' for Windows and '/' for all other systems.
    • - -
  • The second line is the character that separates templates in a path. -Default is ';'.
    • - -
  • The third line is the string that marks the -substitution points in a template. -Default is '?'.
    • - -
  • The fourth line is a string that, in a path in Windows, -is replaced by the executable's directory. -Default is '!'.
    • - -
  • The fifth line is a mark to ignore all text after it -when building the luaopen_ function name. -Default is '-'.
    • - -
- - - -

-

package.cpath

- - -

-The path used by require to search for a C loader. - - -

-Lua initializes the C path package.cpath in the same way -it initializes the Lua path package.path, -using the environment variable LUA_CPATH_5_3, -or the environment variable LUA_CPATH, -or a default path defined in luaconf.h. - - - - -

-

package.loaded

- - -

-A table used by require to control which -modules are already loaded. -When you require a module modname and -package.loaded[modname] is not false, -require simply returns the value stored there. - - -

-This variable is only a reference to the real table; -assignments to this variable do not change the -table used by require. - - - - -

-

package.loadlib (libname, funcname)

- - -

-Dynamically links the host program with the C library libname. - - -

-If funcname is "*", -then it only links with the library, -making the symbols exported by the library -available to other dynamically linked libraries. -Otherwise, -it looks for a function funcname inside the library -and returns this function as a C function. -So, funcname must follow the lua_CFunction prototype -(see lua_CFunction). - - -

-This is a low-level function. -It completely bypasses the package and module system. -Unlike require, -it does not perform any path searching and -does not automatically adds extensions. -libname must be the complete file name of the C library, -including if necessary a path and an extension. -funcname must be the exact name exported by the C library -(which may depend on the C compiler and linker used). - - -

-This function is not supported by Standard C. -As such, it is only available on some platforms -(Windows, Linux, Mac OS X, Solaris, BSD, -plus other Unix systems that support the dlfcn standard). - - - - -

-

package.path

- - -

-The path used by require to search for a Lua loader. - - -

-At start-up, Lua initializes this variable with -the value of the environment variable LUA_PATH_5_3 or -the environment variable LUA_PATH or -with a default path defined in luaconf.h, -if those environment variables are not defined. -Any ";;" in the value of the environment variable -is replaced by the default path. - - - - -

-

package.preload

- - -

-A table to store loaders for specific modules -(see require). - - -

-This variable is only a reference to the real table; -assignments to this variable do not change the -table used by require. - - - - -

-

package.searchers

- - -

-A table used by require to control how to load modules. - - -

-Each entry in this table is a searcher function. -When looking for a module, -require calls each of these searchers in ascending order, -with the module name (the argument given to require) as its -sole parameter. -The function can return another function (the module loader) -plus an extra value that will be passed to that loader, -or a string explaining why it did not find that module -(or nil if it has nothing to say). - - -

-Lua initializes this table with four searcher functions. - - -

-The first searcher simply looks for a loader in the -package.preload table. - - -

-The second searcher looks for a loader as a Lua library, -using the path stored at package.path. -The search is done as described in function package.searchpath. - - -

-The third searcher looks for a loader as a C library, -using the path given by the variable package.cpath. -Again, -the search is done as described in function package.searchpath. -For instance, -if the C path is the string - -

-     "./?.so;./?.dll;/usr/local/?/init.so"
-

-the searcher for module foo -will try to open the files ./foo.so, ./foo.dll, -and /usr/local/foo/init.so, in that order. -Once it finds a C library, -this searcher first uses a dynamic link facility to link the -application with the library. -Then it tries to find a C function inside the library to -be used as the loader. -The name of this C function is the string "luaopen_" -concatenated with a copy of the module name where each dot -is replaced by an underscore. -Moreover, if the module name has a hyphen, -its suffix after (and including) the first hyphen is removed. -For instance, if the module name is a.b.c-v2.1, -the function name will be luaopen_a_b_c. - - -

-The fourth searcher tries an all-in-one loader. -It searches the C path for a library for -the root name of the given module. -For instance, when requiring a.b.c, -it will search for a C library for a. -If found, it looks into it for an open function for -the submodule; -in our example, that would be luaopen_a_b_c. -With this facility, a package can pack several C submodules -into one single library, -with each submodule keeping its original open function. - - -

-All searchers except the first one (preload) return as the extra value -the file name where the module was found, -as returned by package.searchpath. -The first searcher returns no extra value. - - - - -

-

package.searchpath (name, path [, sep [, rep]])

- - -

-Searches for the given name in the given path. - - -

-A path is a string containing a sequence of -templates separated by semicolons. -For each template, -the function replaces each interrogation mark (if any) -in the template with a copy of name -wherein all occurrences of sep -(a dot, by default) -were replaced by rep -(the system's directory separator, by default), -and then tries to open the resulting file name. - - -

-For instance, if the path is the string - -

-     "./?.lua;./?.lc;/usr/local/?/init.lua"
-

-the search for the name foo.a -will try to open the files -./foo/a.lua, ./foo/a.lc, and -/usr/local/foo/a/init.lua, in that order. - - -

-Returns the resulting name of the first file that it can -open in read mode (after closing the file), -or nil plus an error message if none succeeds. -(This error message lists all file names it tried to open.) - - - - - - - -

6.4 – String Manipulation

- -

-This library provides generic functions for string manipulation, -such as finding and extracting substrings, and pattern matching. -When indexing a string in Lua, the first character is at position 1 -(not at 0, as in C). -Indices are allowed to be negative and are interpreted as indexing backwards, -from the end of the string. -Thus, the last character is at position -1, and so on. - - -

-The string library provides all its functions inside the table -string. -It also sets a metatable for strings -where the __index field points to the string table. -Therefore, you can use the string functions in object-oriented style. -For instance, string.byte(s,i) -can be written as s:byte(i). - - -

-The string library assumes one-byte character encodings. - - -

-

string.byte (s [, i [, j]])

-Returns the internal numeric codes of the characters s[i], -s[i+1], ..., s[j]. -The default value for i is 1; -the default value for j is i. -These indices are corrected -following the same rules of function string.sub. - - -

-Numeric codes are not necessarily portable across platforms. - - - - -

-

string.char (···)

-Receives zero or more integers. -Returns a string with length equal to the number of arguments, -in which each character has the internal numeric code equal -to its corresponding argument. - - -

-Numeric codes are not necessarily portable across platforms. - - - - -

-

string.dump (function [, strip])

- - -

-Returns a string containing a binary representation -(a binary chunk) -of the given function, -so that a later load on this string returns -a copy of the function (but with new upvalues). -If strip is a true value, -the binary representation may not include all debug information -about the function, -to save space. - - -

-Functions with upvalues have only their number of upvalues saved. -When (re)loaded, -those upvalues receive fresh instances containing nil. -(You can use the debug library to serialize -and reload the upvalues of a function -in a way adequate to your needs.) - - - - -

-

string.find (s, pattern [, init [, plain]])

- - -

-Looks for the first match of -pattern (see §6.4.1) in the string s. -If it finds a match, then find returns the indices of s -where this occurrence starts and ends; -otherwise, it returns nil. -A third, optional numeric argument init specifies -where to start the search; -its default value is 1 and can be negative. -A value of true as a fourth, optional argument plain -turns off the pattern matching facilities, -so the function does a plain "find substring" operation, -with no characters in pattern being considered magic. -Note that if plain is given, then init must be given as well. - - -

-If the pattern has captures, -then in a successful match -the captured values are also returned, -after the two indices. - - - - -

-

string.format (formatstring, ···)

- - -

-Returns a formatted version of its variable number of arguments -following the description given in its first argument (which must be a string). -The format string follows the same rules as the ISO C function sprintf. -The only differences are that the options/modifiers -*, h, L, l, n, -and p are not supported -and that there is an extra option, q. - - -

-The q option formats a string between double quotes, -using escape sequences when necessary to ensure that -it can safely be read back by the Lua interpreter. -For instance, the call - -

-     string.format('%q', 'a string with "quotes" and \n new line')
-

-may produce the string: - -

-     "a string with \"quotes\" and \
-      new line"
-
- -

-Options -A, a, E, e, f, -G, and g all expect a number as argument. -Options c, d, -i, o, u, X, and x -expect an integer. -When Lua is compiled with a C89 compiler, -options A and a (hexadecimal floats) -do not support any modifier (flags, width, length). - - -

-Option s expects a string; -if its argument is not a string, -it is converted to one following the same rules of tostring. -If the option has any modifier (flags, width, length), -the string argument should not contain embedded zeros. - - - - -

-

string.gmatch (s, pattern)

-Returns an iterator function that, -each time it is called, -returns the next captures from pattern (see §6.4.1) -over the string s. -If pattern specifies no captures, -then the whole match is produced in each call. - - -

-As an example, the following loop -will iterate over all the words from string s, -printing one per line: - -

-     s = "hello world from Lua"
-     for w in string.gmatch(s, "%a+") do
-       print(w)
-     end
-

-The next example collects all pairs key=value from the -given string into a table: - -

-     t = {}
-     s = "from=world, to=Lua"
-     for k, v in string.gmatch(s, "(%w+)=(%w+)") do
-       t[k] = v
-     end
-
- -

-For this function, a caret '^' at the start of a pattern does not -work as an anchor, as this would prevent the iteration. - - - - -

-

string.gsub (s, pattern, repl [, n])

-Returns a copy of s -in which all (or the first n, if given) -occurrences of the pattern (see §6.4.1) have been -replaced by a replacement string specified by repl, -which can be a string, a table, or a function. -gsub also returns, as its second value, -the total number of matches that occurred. -The name gsub comes from Global SUBstitution. - - -

-If repl is a string, then its value is used for replacement. -The character % works as an escape character: -any sequence in repl of the form %d, -with d between 1 and 9, -stands for the value of the d-th captured substring. -The sequence %0 stands for the whole match. -The sequence %% stands for a single %. - - -

-If repl is a table, then the table is queried for every match, -using the first capture as the key. - - -

-If repl is a function, then this function is called every time a -match occurs, with all captured substrings passed as arguments, -in order. - - -

-In any case, -if the pattern specifies no captures, -then it behaves as if the whole pattern was inside a capture. - - -

-If the value returned by the table query or by the function call -is a string or a number, -then it is used as the replacement string; -otherwise, if it is false or nil, -then there is no replacement -(that is, the original match is kept in the string). - - -

-Here are some examples: - -

-     x = string.gsub("hello world", "(%w+)", "%1 %1")
-     --> x="hello hello world world"
-     
-     x = string.gsub("hello world", "%w+", "%0 %0", 1)
-     --> x="hello hello world"
-     
-     x = string.gsub("hello world from Lua", "(%w+)%s*(%w+)", "%2 %1")
-     --> x="world hello Lua from"
-     
-     x = string.gsub("home = $HOME, user = $USER", "%$(%w+)", os.getenv)
-     --> x="home = /home/roberto, user = roberto"
-     
-     x = string.gsub("4+5 = $return 4+5$", "%$(.-)%$", function (s)
-           return load(s)()
-         end)
-     --> x="4+5 = 9"
-     
-     local t = {name="lua", version="5.3"}
-     x = string.gsub("$name-$version.tar.gz", "%$(%w+)", t)
-     --> x="lua-5.3.tar.gz"
-
- - - -

-

string.len (s)

-Receives a string and returns its length. -The empty string "" has length 0. -Embedded zeros are counted, -so "a\000bc\000" has length 5. - - - - -

-

string.lower (s)

-Receives a string and returns a copy of this string with all -uppercase letters changed to lowercase. -All other characters are left unchanged. -The definition of what an uppercase letter is depends on the current locale. - - - - -

-

string.match (s, pattern [, init])

-Looks for the first match of -pattern (see §6.4.1) in the string s. -If it finds one, then match returns -the captures from the pattern; -otherwise it returns nil. -If pattern specifies no captures, -then the whole match is returned. -A third, optional numeric argument init specifies -where to start the search; -its default value is 1 and can be negative. - - - - -

-

string.pack (fmt, v1, v2, ···)

- - -

-Returns a binary string containing the values v1, v2, etc. -packed (that is, serialized in binary form) -according to the format string fmt (see §6.4.2). - - - - -

-

string.packsize (fmt)

- - -

-Returns the size of a string resulting from string.pack -with the given format. -The format string cannot have the variable-length options -'s' or 'z' (see §6.4.2). - - - - -

-

string.rep (s, n [, sep])

-Returns a string that is the concatenation of n copies of -the string s separated by the string sep. -The default value for sep is the empty string -(that is, no separator). -Returns the empty string if n is not positive. - - -

-(Note that it is very easy to exhaust the memory of your machine -with a single call to this function.) - - - - -

-

string.reverse (s)

-Returns a string that is the string s reversed. - - - - -

-

string.sub (s, i [, j])

-Returns the substring of s that -starts at i and continues until j; -i and j can be negative. -If j is absent, then it is assumed to be equal to -1 -(which is the same as the string length). -In particular, -the call string.sub(s,1,j) returns a prefix of s -with length j, -and string.sub(s, -i) (for a positive i) -returns a suffix of s -with length i. - - -

-If, after the translation of negative indices, -i is less than 1, -it is corrected to 1. -If j is greater than the string length, -it is corrected to that length. -If, after these corrections, -i is greater than j, -the function returns the empty string. - - - - -

-

string.unpack (fmt, s [, pos])

- - -

-Returns the values packed in string s (see string.pack) -according to the format string fmt (see §6.4.2). -An optional pos marks where -to start reading in s (default is 1). -After the read values, -this function also returns the index of the first unread byte in s. - - - - -

-

string.upper (s)

-Receives a string and returns a copy of this string with all -lowercase letters changed to uppercase. -All other characters are left unchanged. -The definition of what a lowercase letter is depends on the current locale. - - - - - -

6.4.1 – Patterns

- -

-Patterns in Lua are described by regular strings, -which are interpreted as patterns by the pattern-matching functions -string.find, -string.gmatch, -string.gsub, -and string.match. -This section describes the syntax and the meaning -(that is, what they match) of these strings. - - - -

Character Class:

-A character class is used to represent a set of characters. -The following combinations are allowed in describing a character class: - -

    - -
  • x: -(where x is not one of the magic characters -^$()%.[]*+-?) -represents the character x itself. -
    • - -
  • .: (a dot) represents all characters.
    • - -
  • %a: represents all letters.
    • - -
  • %c: represents all control characters.
    • - -
  • %d: represents all digits.
    • - -
  • %g: represents all printable characters except space.
    • - -
  • %l: represents all lowercase letters.
    • - -
  • %p: represents all punctuation characters.
    • - -
  • %s: represents all space characters.
    • - -
  • %u: represents all uppercase letters.
    • - -
  • %w: represents all alphanumeric characters.
    • - -
  • %x: represents all hexadecimal digits.
    • - -
  • %x: (where x is any non-alphanumeric character) -represents the character x. -This is the standard way to escape the magic characters. -Any non-alphanumeric character -(including all punctuation characters, even the non-magical) -can be preceded by a '%' -when used to represent itself in a pattern. -
    • - -
  • [set]: -represents the class which is the union of all -characters in set. -A range of characters can be specified by -separating the end characters of the range, -in ascending order, with a '-'. -All classes %x described above can also be used as -components in set. -All other characters in set represent themselves. -For example, [%w_] (or [_%w]) -represents all alphanumeric characters plus the underscore, -[0-7] represents the octal digits, -and [0-7%l%-] represents the octal digits plus -the lowercase letters plus the '-' character. - - -

    -You can put a closing square bracket in a set -by positioning it as the first character in the set. -You can put an hyphen in a set -by positioning it as the first or the last character in the set. -(You can also use an escape for both cases.) - - -

    -The interaction between ranges and classes is not defined. -Therefore, patterns like [%a-z] or [a-%%] -have no meaning. -

    • - -
  • [^set]: -represents the complement of set, -where set is interpreted as above. -
    • - -

-For all classes represented by single letters (%a, %c, etc.), -the corresponding uppercase letter represents the complement of the class. -For instance, %S represents all non-space characters. - - -

-The definitions of letter, space, and other character groups -depend on the current locale. -In particular, the class [a-z] may not be equivalent to %l. - - - - - -

Pattern Item:

-A pattern item can be - -

    - -
  • -a single character class, -which matches any single character in the class; -
    • - -
  • -a single character class followed by '*', -which matches zero or more repetitions of characters in the class. -These repetition items will always match the longest possible sequence; -
    • - -
  • -a single character class followed by '+', -which matches one or more repetitions of characters in the class. -These repetition items will always match the longest possible sequence; -
    • - -
  • -a single character class followed by '-', -which also matches zero or more repetitions of characters in the class. -Unlike '*', -these repetition items will always match the shortest possible sequence; -
    • - -
  • -a single character class followed by '?', -which matches zero or one occurrence of a character in the class. -It always matches one occurrence if possible; -
    • - -
  • -%n, for n between 1 and 9; -such item matches a substring equal to the n-th captured string -(see below); -
    • - -
  • -%bxy, where x and y are two distinct characters; -such item matches strings that start with x, end with y, -and where the x and y are balanced. -This means that, if one reads the string from left to right, -counting +1 for an x and -1 for a y, -the ending y is the first y where the count reaches 0. -For instance, the item %b() matches expressions with -balanced parentheses. -
    • - -
  • -%f[set], a frontier pattern; -such item matches an empty string at any position such that -the next character belongs to set -and the previous character does not belong to set. -The set set is interpreted as previously described. -The beginning and the end of the subject are handled as if -they were the character '\0'. -
    • - -
- - - - -

Pattern:

-A pattern is a sequence of pattern items. -A caret '^' at the beginning of a pattern anchors the match at the -beginning of the subject string. -A '$' at the end of a pattern anchors the match at the -end of the subject string. -At other positions, -'^' and '$' have no special meaning and represent themselves. - - - - - -

Captures:

-A pattern can contain sub-patterns enclosed in parentheses; -they describe captures. -When a match succeeds, the substrings of the subject string -that match captures are stored (captured) for future use. -Captures are numbered according to their left parentheses. -For instance, in the pattern "(a*(.)%w(%s*))", -the part of the string matching "a*(.)%w(%s*)" is -stored as the first capture (and therefore has number 1); -the character matching "." is captured with number 2, -and the part matching "%s*" has number 3. - - -

-As a special case, the empty capture () captures -the current string position (a number). -For instance, if we apply the pattern "()aa()" on the -string "flaaap", there will be two captures: 3 and 5. - - - - - - - -

6.4.2 – Format Strings for Pack and Unpack

- -

-The first argument to string.pack, -string.packsize, and string.unpack -is a format string, -which describes the layout of the structure being created or read. - - -

-A format string is a sequence of conversion options. -The conversion options are as follows: - -

    -
  • <: sets little endian
    • -
  • >: sets big endian
    • -
  • =: sets native endian
    • -
  • ![n]: sets maximum alignment to n -(default is native alignment)
    • -
  • b: a signed byte (char)
    • -
  • B: an unsigned byte (char)
    • -
  • h: a signed short (native size)
    • -
  • H: an unsigned short (native size)
    • -
  • l: a signed long (native size)
    • -
  • L: an unsigned long (native size)
    • -
  • j: a lua_Integer
    • -
  • J: a lua_Unsigned
    • -
  • T: a size_t (native size)
    • -
  • i[n]: a signed int with n bytes -(default is native size)
    • -
  • I[n]: an unsigned int with n bytes -(default is native size)
    • -
  • f: a float (native size)
    • -
  • d: a double (native size)
    • -
  • n: a lua_Number
    • -
  • cn: a fixed-sized string with n bytes
    • -
  • z: a zero-terminated string
    • -
  • s[n]: a string preceded by its length -coded as an unsigned integer with n bytes -(default is a size_t)
    • -
  • x: one byte of padding
    • -
  • Xop: an empty item that aligns -according to option op -(which is otherwise ignored)
    • -
  • ' ': (empty space) ignored
    • -

-(A "[n]" means an optional integral numeral.) -Except for padding, spaces, and configurations -(options "xX <=>!"), -each option corresponds to an argument (in string.pack) -or a result (in string.unpack). - - -

-For options "!n", "sn", "in", and "In", -n can be any integer between 1 and 16. -All integral options check overflows; -string.pack checks whether the given value fits in the given size; -string.unpack checks whether the read value fits in a Lua integer. - - -

-Any format string starts as if prefixed by "!1=", -that is, -with maximum alignment of 1 (no alignment) -and native endianness. - - -

-Alignment works as follows: -For each option, -the format gets extra padding until the data starts -at an offset that is a multiple of the minimum between the -option size and the maximum alignment; -this minimum must be a power of 2. -Options "c" and "z" are not aligned; -option "s" follows the alignment of its starting integer. - - -

-All padding is filled with zeros by string.pack -(and ignored by string.unpack). - - - - - - - -

6.5 – UTF-8 Support

- -

-This library provides basic support for UTF-8 encoding. -It provides all its functions inside the table utf8. -This library does not provide any support for Unicode other -than the handling of the encoding. -Any operation that needs the meaning of a character, -such as character classification, is outside its scope. - - -

-Unless stated otherwise, -all functions that expect a byte position as a parameter -assume that the given position is either the start of a byte sequence -or one plus the length of the subject string. -As in the string library, -negative indices count from the end of the string. - - -

-

utf8.char (···)

-Receives zero or more integers, -converts each one to its corresponding UTF-8 byte sequence -and returns a string with the concatenation of all these sequences. - - - - -

-

utf8.charpattern

-The pattern (a string, not a function) "[\0-\x7F\xC2-\xF4][\x80-\xBF]*" -(see §6.4.1), -which matches exactly one UTF-8 byte sequence, -assuming that the subject is a valid UTF-8 string. - - - - -

-

utf8.codes (s)

- - -

-Returns values so that the construction - -

-     for p, c in utf8.codes(s) do body end
-

-will iterate over all characters in string s, -with p being the position (in bytes) and c the code point -of each character. -It raises an error if it meets any invalid byte sequence. - - - - -

-

utf8.codepoint (s [, i [, j]])

-Returns the codepoints (as integers) from all characters in s -that start between byte position i and j (both included). -The default for i is 1 and for j is i. -It raises an error if it meets any invalid byte sequence. - - - - -

-

utf8.len (s [, i [, j]])

-Returns the number of UTF-8 characters in string s -that start between positions i and j (both inclusive). -The default for i is 1 and for j is -1. -If it finds any invalid byte sequence, -returns a false value plus the position of the first invalid byte. - - - - -

-

utf8.offset (s, n [, i])

-Returns the position (in bytes) where the encoding of the -n-th character of s -(counting from position i) starts. -A negative n gets characters before position i. -The default for i is 1 when n is non-negative -and #s + 1 otherwise, -so that utf8.offset(s, -n) gets the offset of the -n-th character from the end of the string. -If the specified character is neither in the subject -nor right after its end, -the function returns nil. - - -

-As a special case, -when n is 0 the function returns the start of the encoding -of the character that contains the i-th byte of s. - - -

-This function assumes that s is a valid UTF-8 string. - - - - - - - -

6.6 – Table Manipulation

- -

-This library provides generic functions for table manipulation. -It provides all its functions inside the table table. - - -

-Remember that, whenever an operation needs the length of a table, -all caveats about the length operator apply (see §3.4.7). -All functions ignore non-numeric keys -in the tables given as arguments. - - -

-

table.concat (list [, sep [, i [, j]]])

- - -

-Given a list where all elements are strings or numbers, -returns the string list[i]..sep..list[i+1] ··· sep..list[j]. -The default value for sep is the empty string, -the default for i is 1, -and the default for j is #list. -If i is greater than j, returns the empty string. - - - - -

-

table.insert (list, [pos,] value)

- - -

-Inserts element value at position pos in list, -shifting up the elements -list[pos], list[pos+1], ···, list[#list]. -The default value for pos is #list+1, -so that a call table.insert(t,x) inserts x at the end -of list t. - - - - -

-

table.move (a1, f, e, t [,a2])

- - -

-Moves elements from table a1 to table a2, -performing the equivalent to the following -multiple assignment: -a2[t],··· = a1[f],···,a1[e]. -The default for a2 is a1. -The destination range can overlap with the source range. -The number of elements to be moved must fit in a Lua integer. - - -

-Returns the destination table a2. - - - - -

-

table.pack (···)

- - -

-Returns a new table with all parameters stored into keys 1, 2, etc. -and with a field "n" with the total number of parameters. -Note that the resulting table may not be a sequence. - - - - -

-

table.remove (list [, pos])

- - -

-Removes from list the element at position pos, -returning the value of the removed element. -When pos is an integer between 1 and #list, -it shifts down the elements -list[pos+1], list[pos+2], ···, list[#list] -and erases element list[#list]; -The index pos can also be 0 when #list is 0, -or #list + 1; -in those cases, the function erases the element list[pos]. - - -

-The default value for pos is #list, -so that a call table.remove(l) removes the last element -of list l. - - - - -

-

table.sort (list [, comp])

- - -

-Sorts list elements in a given order, in-place, -from list[1] to list[#list]. -If comp is given, -then it must be a function that receives two list elements -and returns true when the first element must come -before the second in the final order -(so that, after the sort, -i < j implies not comp(list[j],list[i])). -If comp is not given, -then the standard Lua operator < is used instead. - - -

-Note that the comp function must define -a strict partial order over the elements in the list; -that is, it must be asymmetric and transitive. -Otherwise, no valid sort may be possible. - - -

-The sort algorithm is not stable: -elements considered equal by the given order -may have their relative positions changed by the sort. - - - - -

-

table.unpack (list [, i [, j]])

- - -

-Returns the elements from the given list. -This function is equivalent to - -

-     return list[i], list[i+1], ···, list[j]
-

-By default, i is 1 and j is #list. - - - - - - - -

6.7 – Mathematical Functions

- -

-This library provides basic mathematical functions. -It provides all its functions and constants inside the table math. -Functions with the annotation "integer/float" give -integer results for integer arguments -and float results for float (or mixed) arguments. -Rounding functions -(math.ceil, math.floor, and math.modf) -return an integer when the result fits in the range of an integer, -or a float otherwise. - - -

-

math.abs (x)

- - -

-Returns the absolute value of x. (integer/float) - - - - -

-

math.acos (x)

- - -

-Returns the arc cosine of x (in radians). - - - - -

-

math.asin (x)

- - -

-Returns the arc sine of x (in radians). - - - - -

-

math.atan (y [, x])

- - -

- -Returns the arc tangent of y/x (in radians), -but uses the signs of both parameters to find the -quadrant of the result. -(It also handles correctly the case of x being zero.) - - -

-The default value for x is 1, -so that the call math.atan(y) -returns the arc tangent of y. - - - - -

-

math.ceil (x)

- - -

-Returns the smallest integral value larger than or equal to x. - - - - -

-

math.cos (x)

- - -

-Returns the cosine of x (assumed to be in radians). - - - - -

-

math.deg (x)

- - -

-Converts the angle x from radians to degrees. - - - - -

-

math.exp (x)

- - -

-Returns the value ex -(where e is the base of natural logarithms). - - - - -

-

math.floor (x)

- - -

-Returns the largest integral value smaller than or equal to x. - - - - -

-

math.fmod (x, y)

- - -

-Returns the remainder of the division of x by y -that rounds the quotient towards zero. (integer/float) - - - - -

-

math.huge

- - -

-The float value HUGE_VAL, -a value larger than any other numeric value. - - - - -

-

math.log (x [, base])

- - -

-Returns the logarithm of x in the given base. -The default for base is e -(so that the function returns the natural logarithm of x). - - - - -

-

math.max (x, ···)

- - -

-Returns the argument with the maximum value, -according to the Lua operator <. (integer/float) - - - - -

-

math.maxinteger

-An integer with the maximum value for an integer. - - - - -

-

math.min (x, ···)

- - -

-Returns the argument with the minimum value, -according to the Lua operator <. (integer/float) - - - - -

-

math.mininteger

-An integer with the minimum value for an integer. - - - - -

-

math.modf (x)

- - -

-Returns the integral part of x and the fractional part of x. -Its second result is always a float. - - - - -

-

math.pi

- - -

-The value of π. - - - - -

-

math.rad (x)

- - -

-Converts the angle x from degrees to radians. - - - - -

-

math.random ([m [, n]])

- - -

-When called without arguments, -returns a pseudo-random float with uniform distribution -in the range [0,1). -When called with two integers m and n, -math.random returns a pseudo-random integer -with uniform distribution in the range [m, n]. -(The value n-m cannot be negative and must fit in a Lua integer.) -The call math.random(n) is equivalent to math.random(1,n). - - -

-This function is an interface to the underling -pseudo-random generator function provided by C. - - - - -

-

math.randomseed (x)

- - -

-Sets x as the "seed" -for the pseudo-random generator: -equal seeds produce equal sequences of numbers. - - - - -

-

math.sin (x)

- - -

-Returns the sine of x (assumed to be in radians). - - - - -

-

math.sqrt (x)

- - -

-Returns the square root of x. -(You can also use the expression x^0.5 to compute this value.) - - - - -

-

math.tan (x)

- - -

-Returns the tangent of x (assumed to be in radians). - - - - -

-

math.tointeger (x)

- - -

-If the value x is convertible to an integer, -returns that integer. -Otherwise, returns nil. - - - - -

-

math.type (x)

- - -

-Returns "integer" if x is an integer, -"float" if it is a float, -or nil if x is not a number. - - - - -

-

math.ult (m, n)

- - -

-Returns a boolean, -true if and only if integer m is below integer n when -they are compared as unsigned integers. - - - - - - - -

6.8 – Input and Output Facilities

- -

-The I/O library provides two different styles for file manipulation. -The first one uses implicit file handles; -that is, there are operations to set a default input file and a -default output file, -and all input/output operations are over these default files. -The second style uses explicit file handles. - - -

-When using implicit file handles, -all operations are supplied by table io. -When using explicit file handles, -the operation io.open returns a file handle -and then all operations are supplied as methods of the file handle. - - -

-The table io also provides -three predefined file handles with their usual meanings from C: -io.stdin, io.stdout, and io.stderr. -The I/O library never closes these files. - - -

-Unless otherwise stated, -all I/O functions return nil on failure -(plus an error message as a second result and -a system-dependent error code as a third result) -and some value different from nil on success. -On non-POSIX systems, -the computation of the error message and error code -in case of errors -may be not thread safe, -because they rely on the global C variable errno. - - -

-

io.close ([file])

- - -

-Equivalent to file:close(). -Without a file, closes the default output file. - - - - -

-

io.flush ()

- - -

-Equivalent to io.output():flush(). - - - - -

-

io.input ([file])

- - -

-When called with a file name, it opens the named file (in text mode), -and sets its handle as the default input file. -When called with a file handle, -it simply sets this file handle as the default input file. -When called without parameters, -it returns the current default input file. - - -

-In case of errors this function raises the error, -instead of returning an error code. - - - - -

-

io.lines ([filename, ···])

- - -

-Opens the given file name in read mode -and returns an iterator function that -works like file:lines(···) over the opened file. -When the iterator function detects the end of file, -it returns no values (to finish the loop) and automatically closes the file. - - -

-The call io.lines() (with no file name) is equivalent -to io.input():lines("*l"); -that is, it iterates over the lines of the default input file. -In this case it does not close the file when the loop ends. - - -

-In case of errors this function raises the error, -instead of returning an error code. - - - - -

-

io.open (filename [, mode])

- - -

-This function opens a file, -in the mode specified in the string mode. -In case of success, -it returns a new file handle. - - -

-The mode string can be any of the following: - -

    -
  • "r": read mode (the default);
    • -
  • "w": write mode;
    • -
  • "a": append mode;
    • -
  • "r+": update mode, all previous data is preserved;
    • -
  • "w+": update mode, all previous data is erased;
    • -
  • "a+": append update mode, previous data is preserved, - writing is only allowed at the end of file.
    • -

-The mode string can also have a 'b' at the end, -which is needed in some systems to open the file in binary mode. - - - - -

-

io.output ([file])

- - -

-Similar to io.input, but operates over the default output file. - - - - -

-

io.popen (prog [, mode])

- - -

-This function is system dependent and is not available -on all platforms. - - -

-Starts program prog in a separated process and returns -a file handle that you can use to read data from this program -(if mode is "r", the default) -or to write data to this program -(if mode is "w"). - - - - -

-

io.read (···)

- - -

-Equivalent to io.input():read(···). - - - - -

-

io.tmpfile ()

- - -

-In case of success, -returns a handle for a temporary file. -This file is opened in update mode -and it is automatically removed when the program ends. - - - - -

-

io.type (obj)

- - -

-Checks whether obj is a valid file handle. -Returns the string "file" if obj is an open file handle, -"closed file" if obj is a closed file handle, -or nil if obj is not a file handle. - - - - -

-

io.write (···)

- - -

-Equivalent to io.output():write(···). - - - - -

-

file:close ()

- - -

-Closes file. -Note that files are automatically closed when -their handles are garbage collected, -but that takes an unpredictable amount of time to happen. - - -

-When closing a file handle created with io.popen, -file:close returns the same values -returned by os.execute. - - - - -

-

file:flush ()

- - -

-Saves any written data to file. - - - - -

-

file:lines (···)

- - -

-Returns an iterator function that, -each time it is called, -reads the file according to the given formats. -When no format is given, -uses "l" as a default. -As an example, the construction - -

-     for c in file:lines(1) do body end
-

-will iterate over all characters of the file, -starting at the current position. -Unlike io.lines, this function does not close the file -when the loop ends. - - -

-In case of errors this function raises the error, -instead of returning an error code. - - - - -

-

file:read (···)

- - -

-Reads the file file, -according to the given formats, which specify what to read. -For each format, -the function returns a string or a number with the characters read, -or nil if it cannot read data with the specified format. -(In this latter case, -the function does not read subsequent formats.) -When called without formats, -it uses a default format that reads the next line -(see below). - - -

-The available formats are - -

    - -
  • "n": -reads a numeral and returns it as a float or an integer, -following the lexical conventions of Lua. -(The numeral may have leading spaces and a sign.) -This format always reads the longest input sequence that -is a valid prefix for a numeral; -if that prefix does not form a valid numeral -(e.g., an empty string, "0x", or "3.4e-"), -it is discarded and the function returns nil. -
    • - -
  • "a": -reads the whole file, starting at the current position. -On end of file, it returns the empty string. -
    • - -
  • "l": -reads the next line skipping the end of line, -returning nil on end of file. -This is the default format. -
    • - -
  • "L": -reads the next line keeping the end-of-line character (if present), -returning nil on end of file. -
    • - -
  • number: -reads a string with up to this number of bytes, -returning nil on end of file. -If number is zero, -it reads nothing and returns an empty string, -or nil on end of file. -
    • - -

-The formats "l" and "L" should be used only for text files. - - - - -

-

file:seek ([whence [, offset]])

- - -

-Sets and gets the file position, -measured from the beginning of the file, -to the position given by offset plus a base -specified by the string whence, as follows: - -

    -
  • "set": base is position 0 (beginning of the file);
    • -
  • "cur": base is current position;
    • -
  • "end": base is end of file;
    • -

-In case of success, seek returns the final file position, -measured in bytes from the beginning of the file. -If seek fails, it returns nil, -plus a string describing the error. - - -

-The default value for whence is "cur", -and for offset is 0. -Therefore, the call file:seek() returns the current -file position, without changing it; -the call file:seek("set") sets the position to the -beginning of the file (and returns 0); -and the call file:seek("end") sets the position to the -end of the file, and returns its size. - - - - -

-

file:setvbuf (mode [, size])

- - -

-Sets the buffering mode for an output file. -There are three available modes: - -

    - -
  • "no": -no buffering; the result of any output operation appears immediately. -
    • - -
  • "full": -full buffering; output operation is performed only -when the buffer is full or when -you explicitly flush the file (see io.flush). -
    • - -
  • "line": -line buffering; output is buffered until a newline is output -or there is any input from some special files -(such as a terminal device). -
    • - -

-For the last two cases, size -specifies the size of the buffer, in bytes. -The default is an appropriate size. - - - - -

-

file:write (···)

- - -

-Writes the value of each of its arguments to file. -The arguments must be strings or numbers. - - -

-In case of success, this function returns file. -Otherwise it returns nil plus a string describing the error. - - - - - - - -

6.9 – Operating System Facilities

- -

-This library is implemented through table os. - - -

-

os.clock ()

- - -

-Returns an approximation of the amount in seconds of CPU time -used by the program. - - - - -

-

os.date ([format [, time]])

- - -

-Returns a string or a table containing date and time, -formatted according to the given string format. - - -

-If the time argument is present, -this is the time to be formatted -(see the os.time function for a description of this value). -Otherwise, date formats the current time. - - -

-If format starts with '!', -then the date is formatted in Coordinated Universal Time. -After this optional character, -if format is the string "*t", -then date returns a table with the following fields: -year, month (1–12), day (1–31), -hour (0–23), min (0–59), sec (0–61), -wday (weekday, 1–7, Sunday is 1), -yday (day of the year, 1–366), -and isdst (daylight saving flag, a boolean). -This last field may be absent -if the information is not available. - - -

-If format is not "*t", -then date returns the date as a string, -formatted according to the same rules as the ISO C function strftime. - - -

-When called without arguments, -date returns a reasonable date and time representation that depends on -the host system and on the current locale. -(More specifically, os.date() is equivalent to os.date("%c").) - - -

-On non-POSIX systems, -this function may be not thread safe -because of its reliance on C function gmtime and C function localtime. - - - - -

-

os.difftime (t2, t1)

- - -

-Returns the difference, in seconds, -from time t1 to time t2 -(where the times are values returned by os.time). -In POSIX, Windows, and some other systems, -this value is exactly t2-t1. - - - - -

-

os.execute ([command])

- - -

-This function is equivalent to the ISO C function system. -It passes command to be executed by an operating system shell. -Its first result is true -if the command terminated successfully, -or nil otherwise. -After this first result -the function returns a string plus a number, -as follows: - -

    - -
  • "exit": -the command terminated normally; -the following number is the exit status of the command. -
    • - -
  • "signal": -the command was terminated by a signal; -the following number is the signal that terminated the command. -
    • - -
- -

-When called without a command, -os.execute returns a boolean that is true if a shell is available. - - - - -

-

os.exit ([code [, close]])

- - -

-Calls the ISO C function exit to terminate the host program. -If code is true, -the returned status is EXIT_SUCCESS; -if code is false, -the returned status is EXIT_FAILURE; -if code is a number, -the returned status is this number. -The default value for code is true. - - -

-If the optional second argument close is true, -closes the Lua state before exiting. - - - - -

-

os.getenv (varname)

- - -

-Returns the value of the process environment variable varname, -or nil if the variable is not defined. - - - - -

-

os.remove (filename)

- - -

-Deletes the file (or empty directory, on POSIX systems) -with the given name. -If this function fails, it returns nil, -plus a string describing the error and the error code. -Otherwise, it returns true. - - - - -

-

os.rename (oldname, newname)

- - -

-Renames the file or directory named oldname to newname. -If this function fails, it returns nil, -plus a string describing the error and the error code. -Otherwise, it returns true. - - - - -

-

os.setlocale (locale [, category])

- - -

-Sets the current locale of the program. -locale is a system-dependent string specifying a locale; -category is an optional string describing which category to change: -"all", "collate", "ctype", -"monetary", "numeric", or "time"; -the default category is "all". -The function returns the name of the new locale, -or nil if the request cannot be honored. - - -

-If locale is the empty string, -the current locale is set to an implementation-defined native locale. -If locale is the string "C", -the current locale is set to the standard C locale. - - -

-When called with nil as the first argument, -this function only returns the name of the current locale -for the given category. - - -

-This function may be not thread safe -because of its reliance on C function setlocale. - - - - -

-

os.time ([table])

- - -

-Returns the current time when called without arguments, -or a time representing the local date and time specified by the given table. -This table must have fields year, month, and day, -and may have fields -hour (default is 12), -min (default is 0), -sec (default is 0), -and isdst (default is nil). -Other fields are ignored. -For a description of these fields, see the os.date function. - - -

-The values in these fields do not need to be inside their valid ranges. -For instance, if sec is -10, -it means -10 seconds from the time specified by the other fields; -if hour is 1000, -it means +1000 hours from the time specified by the other fields. - - -

-The returned value is a number, whose meaning depends on your system. -In POSIX, Windows, and some other systems, -this number counts the number -of seconds since some given start time (the "epoch"). -In other systems, the meaning is not specified, -and the number returned by time can be used only as an argument to -os.date and os.difftime. - - - - -

-

os.tmpname ()

- - -

-Returns a string with a file name that can -be used for a temporary file. -The file must be explicitly opened before its use -and explicitly removed when no longer needed. - - -

-On POSIX systems, -this function also creates a file with that name, -to avoid security risks. -(Someone else might create the file with wrong permissions -in the time between getting the name and creating the file.) -You still have to open the file to use it -and to remove it (even if you do not use it). - - -

-When possible, -you may prefer to use io.tmpfile, -which automatically removes the file when the program ends. - - - - - - - -

6.10 – The Debug Library

- -

-This library provides -the functionality of the debug interface (§4.9) to Lua programs. -You should exert care when using this library. -Several of its functions -violate basic assumptions about Lua code -(e.g., that variables local to a function -cannot be accessed from outside; -that userdata metatables cannot be changed by Lua code; -that Lua programs do not crash) -and therefore can compromise otherwise secure code. -Moreover, some functions in this library may be slow. - - -

-All functions in this library are provided -inside the debug table. -All functions that operate over a thread -have an optional first argument which is the -thread to operate over. -The default is always the current thread. - - -

-

debug.debug ()

- - -

-Enters an interactive mode with the user, -running each string that the user enters. -Using simple commands and other debug facilities, -the user can inspect global and local variables, -change their values, evaluate expressions, and so on. -A line containing only the word cont finishes this function, -so that the caller continues its execution. - - -

-Note that commands for debug.debug are not lexically nested -within any function and so have no direct access to local variables. - - - - -

-

debug.gethook ([thread])

- - -

-Returns the current hook settings of the thread, as three values: -the current hook function, the current hook mask, -and the current hook count -(as set by the debug.sethook function). - - - - -

-

debug.getinfo ([thread,] f [, what])

- - -

-Returns a table with information about a function. -You can give the function directly -or you can give a number as the value of f, -which means the function running at level f of the call stack -of the given thread: -level 0 is the current function (getinfo itself); -level 1 is the function that called getinfo -(except for tail calls, which do not count on the stack); -and so on. -If f is a number larger than the number of active functions, -then getinfo returns nil. - - -

-The returned table can contain all the fields returned by lua_getinfo, -with the string what describing which fields to fill in. -The default for what is to get all information available, -except the table of valid lines. -If present, -the option 'f' -adds a field named func with the function itself. -If present, -the option 'L' -adds a field named activelines with the table of -valid lines. - - -

-For instance, the expression debug.getinfo(1,"n").name returns -a name for the current function, -if a reasonable name can be found, -and the expression debug.getinfo(print) -returns a table with all available information -about the print function. - - - - -

-

debug.getlocal ([thread,] f, local)

- - -

-This function returns the name and the value of the local variable -with index local of the function at level f of the stack. -This function accesses not only explicit local variables, -but also parameters, temporaries, etc. - - -

-The first parameter or local variable has index 1, and so on, -following the order that they are declared in the code, -counting only the variables that are active -in the current scope of the function. -Negative indices refer to vararg parameters; --1 is the first vararg parameter. -The function returns nil if there is no variable with the given index, -and raises an error when called with a level out of range. -(You can call debug.getinfo to check whether the level is valid.) - - -

-Variable names starting with '(' (open parenthesis) -represent variables with no known names -(internal variables such as loop control variables, -and variables from chunks saved without debug information). - - -

-The parameter f may also be a function. -In that case, getlocal returns only the name of function parameters. - - - - -

-

debug.getmetatable (value)

- - -

-Returns the metatable of the given value -or nil if it does not have a metatable. - - - - -

-

debug.getregistry ()

- - -

-Returns the registry table (see §4.5). - - - - -

-

debug.getupvalue (f, up)

- - -

-This function returns the name and the value of the upvalue -with index up of the function f. -The function returns nil if there is no upvalue with the given index. - - -

-Variable names starting with '(' (open parenthesis) -represent variables with no known names -(variables from chunks saved without debug information). - - - - -

-

debug.getuservalue (u)

- - -

-Returns the Lua value associated to u. -If u is not a full userdata, -returns nil. - - - - -

-

debug.sethook ([thread,] hook, mask [, count])

- - -

-Sets the given function as a hook. -The string mask and the number count describe -when the hook will be called. -The string mask may have any combination of the following characters, -with the given meaning: - -

    -
  • 'c': the hook is called every time Lua calls a function;
    • -
  • 'r': the hook is called every time Lua returns from a function;
    • -
  • 'l': the hook is called every time Lua enters a new line of code.
    • -

-Moreover, -with a count different from zero, -the hook is called also after every count instructions. - - -

-When called without arguments, -debug.sethook turns off the hook. - - -

-When the hook is called, its first parameter is a string -describing the event that has triggered its call: -"call" (or "tail call"), -"return", -"line", and "count". -For line events, -the hook also gets the new line number as its second parameter. -Inside a hook, -you can call getinfo with level 2 to get more information about -the running function -(level 0 is the getinfo function, -and level 1 is the hook function). - - - - -

-

debug.setlocal ([thread,] level, local, value)

- - -

-This function assigns the value value to the local variable -with index local of the function at level level of the stack. -The function returns nil if there is no local -variable with the given index, -and raises an error when called with a level out of range. -(You can call getinfo to check whether the level is valid.) -Otherwise, it returns the name of the local variable. - - -

-See debug.getlocal for more information about -variable indices and names. - - - - -

-

debug.setmetatable (value, table)

- - -

-Sets the metatable for the given value to the given table -(which can be nil). -Returns value. - - - - -

-

debug.setupvalue (f, up, value)

- - -

-This function assigns the value value to the upvalue -with index up of the function f. -The function returns nil if there is no upvalue -with the given index. -Otherwise, it returns the name of the upvalue. - - - - -

-

debug.setuservalue (udata, value)

- - -

-Sets the given value as -the Lua value associated to the given udata. -udata must be a full userdata. - - -

-Returns udata. - - - - -

-

debug.traceback ([thread,] [message [, level]])

- - -

-If message is present but is neither a string nor nil, -this function returns message without further processing. -Otherwise, -it returns a string with a traceback of the call stack. -The optional message string is appended -at the beginning of the traceback. -An optional level number tells at which level -to start the traceback -(default is 1, the function calling traceback). - - - - -

-

debug.upvalueid (f, n)

- - -

-Returns a unique identifier (as a light userdata) -for the upvalue numbered n -from the given function. - - -

-These unique identifiers allow a program to check whether different -closures share upvalues. -Lua closures that share an upvalue -(that is, that access a same external local variable) -will return identical ids for those upvalue indices. - - - - -

-

debug.upvaluejoin (f1, n1, f2, n2)

- - -

-Make the n1-th upvalue of the Lua closure f1 -refer to the n2-th upvalue of the Lua closure f2. - - - - - - - -

7 – Lua Standalone

- -

-Although Lua has been designed as an extension language, -to be embedded in a host C program, -it is also frequently used as a standalone language. -An interpreter for Lua as a standalone language, -called simply lua, -is provided with the standard distribution. -The standalone interpreter includes -all standard libraries, including the debug library. -Its usage is: - -

-     lua [options] [script [args]]
-

-The options are: - -

    -
  • -e stat: executes string stat;
    • -
  • -l mod: "requires" mod;
    • -
  • -i: enters interactive mode after running script;
    • -
  • -v: prints version information;
    • -
  • -E: ignores environment variables;
    • -
  • --: stops handling options;
    • -
  • -: executes stdin as a file and stops handling options.
    • -

-After handling its options, lua runs the given script. -When called without arguments, -lua behaves as lua -v -i -when the standard input (stdin) is a terminal, -and as lua - otherwise. - - -

-When called without option -E, -the interpreter checks for an environment variable LUA_INIT_5_3 -(or LUA_INIT if the versioned name is not defined) -before running any argument. -If the variable content has the format @filename, -then lua executes the file. -Otherwise, lua executes the string itself. - - -

-When called with option -E, -besides ignoring LUA_INIT, -Lua also ignores -the values of LUA_PATH and LUA_CPATH, -setting the values of -package.path and package.cpath -with the default paths defined in luaconf.h. - - -

-All options are handled in order, except -i and -E. -For instance, an invocation like - -

-     $ lua -e'a=1' -e 'print(a)' script.lua
-

-will first set a to 1, then print the value of a, -and finally run the file script.lua with no arguments. -(Here $ is the shell prompt. Your prompt may be different.) - - -

-Before running any code, -lua collects all command-line arguments -in a global table called arg. -The script name goes to index 0, -the first argument after the script name goes to index 1, -and so on. -Any arguments before the script name -(that is, the interpreter name plus its options) -go to negative indices. -For instance, in the call - -

-     $ lua -la b.lua t1 t2
-

-the table is like this: - -

-     arg = { [-2] = "lua", [-1] = "-la",
-             [0] = "b.lua",
-             [1] = "t1", [2] = "t2" }
-

-If there is no script in the call, -the interpreter name goes to index 0, -followed by the other arguments. -For instance, the call - -

-     $ lua -e "print(arg[1])"
-

-will print "-e". -If there is a script, -the script is called with parameters -arg[1], ···, arg[#arg]. -(Like all chunks in Lua, -the script is compiled as a vararg function.) - - -

-In interactive mode, -Lua repeatedly prompts and waits for a line. -After reading a line, -Lua first try to interpret the line as an expression. -If it succeeds, it prints its value. -Otherwise, it interprets the line as a statement. -If you write an incomplete statement, -the interpreter waits for its completion -by issuing a different prompt. - - -

-If the global variable _PROMPT contains a string, -then its value is used as the prompt. -Similarly, if the global variable _PROMPT2 contains a string, -its value is used as the secondary prompt -(issued during incomplete statements). - - -

-In case of unprotected errors in the script, -the interpreter reports the error to the standard error stream. -If the error object is not a string but -has a metamethod __tostring, -the interpreter calls this metamethod to produce the final message. -Otherwise, the interpreter converts the error object to a string -and adds a stack traceback to it. - - -

-When finishing normally, -the interpreter closes its main Lua state -(see lua_close). -The script can avoid this step by -calling os.exit to terminate. - - -

-To allow the use of Lua as a -script interpreter in Unix systems, -the standalone interpreter skips -the first line of a chunk if it starts with #. -Therefore, Lua scripts can be made into executable programs -by using chmod +x and the #! form, -as in - -

-     #!/usr/local/bin/lua
-

-(Of course, -the location of the Lua interpreter may be different in your machine. -If lua is in your PATH, -then - -

-     #!/usr/bin/env lua
-

-is a more portable solution.) - - - -

8 – Incompatibilities with the Previous Version

- -

-Here we list the incompatibilities that you may find when moving a program -from Lua 5.2 to Lua 5.3. -You can avoid some incompatibilities by compiling Lua with -appropriate options (see file luaconf.h). -However, -all these compatibility options will be removed in the future. - - -

-Lua versions can always change the C API in ways that -do not imply source-code changes in a program, -such as the numeric values for constants -or the implementation of functions as macros. -Therefore, -you should not assume that binaries are compatible between -different Lua versions. -Always recompile clients of the Lua API when -using a new version. - - -

-Similarly, Lua versions can always change the internal representation -of precompiled chunks; -precompiled chunks are not compatible between different Lua versions. - - -

-The standard paths in the official distribution may -change between versions. - - - -

8.1 – Changes in the Language

-
    - -
  • -The main difference between Lua 5.2 and Lua 5.3 is the -introduction of an integer subtype for numbers. -Although this change should not affect "normal" computations, -some computations -(mainly those that involve some kind of overflow) -can give different results. - - -

    -You can fix these differences by forcing a number to be a float -(in Lua 5.2 all numbers were float), -in particular writing constants with an ending .0 -or using x = x + 0.0 to convert a variable. -(This recommendation is only for a quick fix -for an occasional incompatibility; -it is not a general guideline for good programming. -For good programming, -use floats where you need floats -and integers where you need integers.) -

    • - -
  • -The conversion of a float to a string now adds a .0 suffix -to the result if it looks like an integer. -(For instance, the float 2.0 will be printed as 2.0, -not as 2.) -You should always use an explicit format -when you need a specific format for numbers. - - -

    -(Formally this is not an incompatibility, -because Lua does not specify how numbers are formatted as strings, -but some programs assumed a specific format.) -

    • - -
  • -The generational mode for the garbage collector was removed. -(It was an experimental feature in Lua 5.2.) -
    • - -
- - - - -

8.2 – Changes in the Libraries

-
    - -
  • -The bit32 library has been deprecated. -It is easy to require a compatible external library or, -better yet, to replace its functions with appropriate bitwise operations. -(Keep in mind that bit32 operates on 32-bit integers, -while the bitwise operators in Lua 5.3 operate on Lua integers, -which by default have 64 bits.) -
    • - -
  • -The Table library now respects metamethods -for setting and getting elements. -
    • - -
  • -The ipairs iterator now respects metamethods and -its __ipairs metamethod has been deprecated. -
    • - -
  • -Option names in io.read do not have a starting '*' anymore. -For compatibility, Lua will continue to accept (and ignore) this character. -
    • - -
  • -The following functions were deprecated in the mathematical library: -atan2, cosh, sinh, tanh, pow, -frexp, and ldexp. -You can replace math.pow(x,y) with x^y; -you can replace math.atan2 with math.atan, -which now accepts one or two parameters; -you can replace math.ldexp(x,exp) with x * 2.0^exp. -For the other operations, -you can either use an external library or -implement them in Lua. -
    • - -
  • -The searcher for C loaders used by require -changed the way it handles versioned names. -Now, the version should come after the module name -(as is usual in most other tools). -For compatibility, that searcher still tries the old format -if it cannot find an open function according to the new style. -(Lua 5.2 already worked that way, -but it did not document the change.) -
    • - -
  • -The call collectgarbage("count") now returns only one result. -(You can compute that second result from the fractional part -of the first result.) -
    • - -
- - - - -

8.3 – Changes in the API

- - -
    - -
  • -Continuation functions now receive as parameters what they needed -to get through lua_getctx, -so lua_getctx has been removed. -Adapt your code accordingly. -
    • - -
  • -Function lua_dump has an extra parameter, strip. -Use 0 as the value of this parameter to get the old behavior. -
    • - -
  • -Functions to inject/project unsigned integers -(lua_pushunsigned, lua_tounsigned, lua_tounsignedx, -luaL_checkunsigned, luaL_optunsigned) -were deprecated. -Use their signed equivalents with a type cast. -
    • - -
  • -Macros to project non-default integer types -(luaL_checkint, luaL_optint, luaL_checklong, luaL_optlong) -were deprecated. -Use their equivalent over lua_Integer with a type cast -(or, when possible, use lua_Integer in your code). -
    • - -
- - - - -

9 – The Complete Syntax of Lua

- -

-Here is the complete syntax of Lua in extended BNF. -As usual in extended BNF, -{A} means 0 or more As, -and [A] means an optional A. -(For operator precedences, see §3.4.8; -for a description of the terminals -Name, Numeral, -and LiteralString, see §3.1.) - - - - -

-
-	chunk ::= block
-
-	block ::= {stat} [retstat]
-
-	stat ::=  ‘;’ | 
-		 varlist ‘=’ explist | 
-		 functioncall | 
-		 label | 
-		 break | 
-		 goto Name | 
-		 do block end | 
-		 while exp do block end | 
-		 repeat block until exp | 
-		 if exp then block {elseif exp then block} [else block] end | 
-		 for Name ‘=’ exp ‘,’ exp [‘,’ exp] do block end | 
-		 for namelist in explist do block end | 
-		 function funcname funcbody | 
-		 local function Name funcbody | 
-		 local namelist [‘=’ explist] 
-
-	retstat ::= return [explist] [‘;’]
-
-	label ::= ‘::’ Name ‘::’
-
-	funcname ::= Name {‘.’ Name} [‘:’ Name]
-
-	varlist ::= var {‘,’ var}
-
-	var ::=  Name | prefixexp ‘[’ exp ‘]’ | prefixexp ‘.’ Name 
-
-	namelist ::= Name {‘,’ Name}
-
-	explist ::= exp {‘,’ exp}
-
-	exp ::=  nil | false | true | Numeral | LiteralString | ‘...’ | functiondef | 
-		 prefixexp | tableconstructor | exp binop exp | unop exp 
-
-	prefixexp ::= var | functioncall | ‘(’ exp ‘)’
-
-	functioncall ::=  prefixexp args | prefixexp ‘:’ Name args 
-
-	args ::=  ‘(’ [explist] ‘)’ | tableconstructor | LiteralString 
-
-	functiondef ::= function funcbody
-
-	funcbody ::= ‘(’ [parlist] ‘)’ block end
-
-	parlist ::= namelist [‘,’ ‘...’] | ‘...’
-
-	tableconstructor ::= ‘{’ [fieldlist] ‘}’
-
-	fieldlist ::= field {fieldsep field} [fieldsep]
-
-	field ::= ‘[’ exp ‘]’ ‘=’ exp | Name ‘=’ exp | exp
-
-	fieldsep ::= ‘,’ | ‘;’
-
-	binop ::=  ‘+’ | ‘-’ | ‘*’ | ‘/’ | ‘//’ | ‘^’ | ‘%’ | 
-		 ‘&’ | ‘~’ | ‘|’ | ‘>>’ | ‘<<’ | ‘..’ | 
-		 ‘<’ | ‘<=’ | ‘>’ | ‘>=’ | ‘==’ | ‘~=’ | 
-		 and | or
-
-	unop ::= ‘-’ | not | ‘#’ | ‘~’
-
-
- -

- - - - - - - -

-Last update: -Mon Jan 9 13:30:53 BRST 2017 -

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-Lua -Welcome to Lua 5.3 -

- -
-about -· -installation -· -changes -· -license -· -reference manual -
- -

About Lua

-

-Lua is a powerful, fast, lightweight, embeddable scripting language -developed by a -team -at -PUC-Rio, -the Pontifical Catholic University of Rio de Janeiro in Brazil. -Lua is -free software -used in many products and projects around the world. - -

-Lua's -official web site -provides complete information -about Lua, -including -an -executive summary -and -updated -documentation, -especially the -reference manual, -which may differ slightly from the -local copy -distributed in this package. - -

Installing Lua

-

-Lua is distributed in -source -form. -You need to build it before using it. -Building Lua should be straightforward -because -Lua is implemented in pure ANSI C and compiles unmodified in all known -platforms that have an ANSI C compiler. -Lua also compiles unmodified as C++. -The instructions given below for building Lua are for Unix-like platforms. -See also -instructions for other systems -and -customization options. - -

-If you don't have the time or the inclination to compile Lua yourself, -get a binary from -LuaBinaries. -Try also -LuaDist, -a multi-platform distribution of Lua that includes batteries. - -

Building Lua

-

-In most Unix-like platforms, simply do "make" with a suitable target. -Here are the details. - -

    -
  1. -Open a terminal window and move to -the top-level directory, which is named lua-5.3.x. -The Makefile there controls both the build process and the installation process. -

    -

  2. - Do "make" and see if your platform is listed. - The platforms currently supported are: -

    -

    - aix bsd c89 freebsd generic linux macosx mingw posix solaris -

    -

    - If your platform is listed, just do "make xxx", where xxx - is your platform name. -

    - If your platform is not listed, try the closest one or posix, generic, - c89, in this order. -

    -

  3. -The compilation takes only a few moments -and produces three files in the src directory: -lua (the interpreter), -luac (the compiler), -and liblua.a (the library). -

    -

  4. - To check that Lua has been built correctly, do "make test" - after building Lua. This will run the interpreter and print its version. -
-

-If you're running Linux and get compilation errors, -make sure you have installed the readline development package -(which is probably named libreadline-dev or readline-devel). -If you get link errors after that, -then try "make linux MYLIBS=-ltermcap". - -

Installing Lua

-

- Once you have built Lua, you may want to install it in an official - place in your system. In this case, do "make install". The official - place and the way to install files are defined in the Makefile. You'll - probably need the right permissions to install files. - -

- To build and install Lua in one step, do "make xxx install", - where xxx is your platform name. - -

- To install Lua locally, do "make local". - This will create a directory install with subdirectories - bin, include, lib, man, share, - and install Lua as listed below. - - To install Lua locally, but in some other directory, do - "make install INSTALL_TOP=xxx", where xxx is your chosen directory. - The installation starts in the src and doc directories, - so take care if INSTALL_TOP is not an absolute path. - -

-
- bin: -
- lua luac -
- include: -
- lua.h luaconf.h lualib.h lauxlib.h lua.hpp -
- lib: -
- liblua.a -
- man/man1: -
- lua.1 luac.1 -
- -

- These are the only directories you need for development. - If you only want to run Lua programs, - you only need the files in bin and man. - The files in include and lib are needed for - embedding Lua in C or C++ programs. - -

Customization

-

- Three kinds of things can be customized by editing a file: -

    -
  • Where and how to install Lua — edit Makefile. -
  • How to build Lua — edit src/Makefile. -
  • Lua features — edit src/luaconf.h. -
- -

- You don't actually need to edit the Makefiles because you may set the - relevant variables in the command line when invoking make. - Nevertheless, it's probably best to edit and save the Makefiles to - record the changes you've made. - -

- On the other hand, if you need to customize some Lua features, you'll need - to edit src/luaconf.h before building and installing Lua. - The edited file will be the one installed, and - it will be used by any Lua clients that you build, to ensure consistency. - Further customization is available to experts by editing the Lua sources. - -

Building Lua on other systems

-

- If you're not using the usual Unix tools, then the instructions for - building Lua depend on the compiler you use. You'll need to create - projects (or whatever your compiler uses) for building the library, - the interpreter, and the compiler, as follows: - -

-
-library: -
-lapi.c lcode.c lctype.c ldebug.c ldo.c ldump.c lfunc.c lgc.c llex.c -lmem.c lobject.c lopcodes.c lparser.c lstate.c lstring.c ltable.c -ltm.c lundump.c lvm.c lzio.c -lauxlib.c lbaselib.c lbitlib.c lcorolib.c ldblib.c liolib.c -lmathlib.c loslib.c lstrlib.c ltablib.c lutf8lib.c loadlib.c linit.c -
-interpreter: -
- library, lua.c -
-compiler: -
- library, luac.c -
- -

- To use Lua as a library in your own programs you'll need to know how to - create and use libraries with your compiler. Moreover, to dynamically load - C libraries for Lua you'll need to know how to create dynamic libraries - and you'll need to make sure that the Lua API functions are accessible to - those dynamic libraries — but don't link the Lua library - into each dynamic library. For Unix, we recommend that the Lua library - be linked statically into the host program and its symbols exported for - dynamic linking; src/Makefile does this for the Lua interpreter. - For Windows, we recommend that the Lua library be a DLL. - In all cases, the compiler luac should be linked statically. - -

- As mentioned above, you may edit src/luaconf.h to customize - some features before building Lua. - -

Changes since Lua 5.2

-

-Here are the main changes introduced in Lua 5.3. -The -reference manual -lists the -incompatibilities that had to be introduced. - -

Main changes

-
    -
  • integers (64-bit by default) -
  • official support for 32-bit numbers -
  • bitwise operators -
  • basic utf-8 support -
  • functions for packing and unpacking values - -
- -Here are the other changes introduced in Lua 5.3: -

Language

-
    -
  • userdata can have any Lua value as uservalue -
  • floor division -
  • more flexible rules for some metamethods -
- -

Libraries

-
    -
  • ipairs and the table library respect metamethods -
  • strip option in string.dump -
  • table library respects metamethods -
  • new function table.move -
  • new function string.pack -
  • new function string.unpack -
  • new function string.packsize -
- -

C API

-
    -
  • simpler API for continuation functions in C -
  • lua_gettable and similar functions return type of resulted value -
  • strip option in lua_dump -
  • new function: lua_geti -
  • new function: lua_seti -
  • new function: lua_isyieldable -
  • new function: lua_numbertointeger -
  • new function: lua_rotate -
  • new function: lua_stringtonumber -
- -

Lua standalone interpreter

-
    -
  • can be used as calculator; no need to prefix with '=' -
  • arg table available to all code -
- -

License

-

- -[osi certified] - -Lua is free software distributed under the terms of the -MIT license -reproduced below; -it may be used for any purpose, including commercial purposes, -at absolutely no cost without having to ask us. - -The only requirement is that if you do use Lua, -then you should give us credit by including the appropriate copyright notice somewhere in your product or its documentation. - -For details, see -this. - -

-Copyright © 1994–2017 Lua.org, PUC-Rio. - -

-Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -

-The above copyright notice and this permission notice shall be included in -all copies or substantial portions of the Software. - -

-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -THE SOFTWARE. -

-

- -

-Last update: -Thu Dec 22 18:22:57 BRST 2016 -

- - - - diff --git a/deps/rcheevos/test/lua/src/Makefile b/deps/rcheevos/test/lua/src/Makefile deleted file mode 100644 index d71c75c873..0000000000 --- a/deps/rcheevos/test/lua/src/Makefile +++ /dev/null @@ -1,197 +0,0 @@ -# Makefile for building Lua -# See ../doc/readme.html for installation and customization instructions. - -# == CHANGE THE SETTINGS BELOW TO SUIT YOUR ENVIRONMENT ======================= - -# Your platform. See PLATS for possible values. -PLAT= none - -CC= gcc -std=gnu99 -CFLAGS= -O2 -Wall -Wextra -DLUA_COMPAT_5_2 $(SYSCFLAGS) $(MYCFLAGS) -LDFLAGS= $(SYSLDFLAGS) $(MYLDFLAGS) -LIBS= -lm $(SYSLIBS) $(MYLIBS) - -AR= ar rcu -RANLIB= ranlib -RM= rm -f - -SYSCFLAGS= -SYSLDFLAGS= -SYSLIBS= - -MYCFLAGS= -MYLDFLAGS= -MYLIBS= -MYOBJS= - -# == END OF USER SETTINGS -- NO NEED TO CHANGE ANYTHING BELOW THIS LINE ======= - -PLATS= aix bsd c89 freebsd generic linux macosx mingw posix solaris - -LUA_A= liblua.a -CORE_O= lapi.o lcode.o lctype.o ldebug.o ldo.o ldump.o lfunc.o lgc.o llex.o \ - lmem.o lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o \ - ltm.o lundump.o lvm.o lzio.o -LIB_O= lauxlib.o lbaselib.o lbitlib.o lcorolib.o ldblib.o liolib.o \ - lmathlib.o loslib.o lstrlib.o ltablib.o lutf8lib.o loadlib.o linit.o -BASE_O= $(CORE_O) $(LIB_O) $(MYOBJS) - -LUA_T= lua -LUA_O= lua.o - -LUAC_T= luac -LUAC_O= luac.o - -ALL_O= $(BASE_O) $(LUA_O) $(LUAC_O) -ALL_T= $(LUA_A) $(LUA_T) $(LUAC_T) -ALL_A= $(LUA_A) - -# Targets start here. -default: $(PLAT) - -all: $(ALL_T) - -o: $(ALL_O) - -a: $(ALL_A) - -$(LUA_A): $(BASE_O) - $(AR) $@ $(BASE_O) - $(RANLIB) $@ - -$(LUA_T): $(LUA_O) $(LUA_A) - $(CC) -o $@ $(LDFLAGS) $(LUA_O) $(LUA_A) $(LIBS) - -$(LUAC_T): $(LUAC_O) $(LUA_A) - $(CC) -o $@ $(LDFLAGS) $(LUAC_O) $(LUA_A) $(LIBS) - -clean: - $(RM) $(ALL_T) $(ALL_O) - -depend: - @$(CC) $(CFLAGS) -MM l*.c - -echo: - @echo "PLAT= $(PLAT)" - @echo "CC= $(CC)" - @echo "CFLAGS= $(CFLAGS)" - @echo "LDFLAGS= $(SYSLDFLAGS)" - @echo "LIBS= $(LIBS)" - @echo "AR= $(AR)" - @echo "RANLIB= $(RANLIB)" - @echo "RM= $(RM)" - -# Convenience targets for popular platforms -ALL= all - -none: - @echo "Please do 'make PLATFORM' where PLATFORM is one of these:" - @echo " $(PLATS)" - -aix: - $(MAKE) $(ALL) CC="xlc" CFLAGS="-O2 -DLUA_USE_POSIX -DLUA_USE_DLOPEN" SYSLIBS="-ldl" SYSLDFLAGS="-brtl -bexpall" - -bsd: - $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN" SYSLIBS="-Wl,-E" - -c89: - $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_C89" CC="gcc -std=c89" - @echo '' - @echo '*** C89 does not guarantee 64-bit integers for Lua.' - @echo '' - - -freebsd: - $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E -lreadline" - -generic: $(ALL) - -linux: - $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E -ldl -lreadline" - -macosx: - $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_MACOSX" SYSLIBS="-lreadline" CC=cc - -mingw: - $(MAKE) "LUA_A=lua53.dll" "LUA_T=lua.exe" \ - "AR=$(CC) -shared -o" "RANLIB=strip --strip-unneeded" \ - "SYSCFLAGS=-DLUA_BUILD_AS_DLL" "SYSLIBS=" "SYSLDFLAGS=-s" lua.exe - $(MAKE) "LUAC_T=luac.exe" luac.exe - -posix: - $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX" - -solaris: - $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN -D_REENTRANT" SYSLIBS="-ldl" - -# list targets that do not create files (but not all makes understand .PHONY) -.PHONY: all $(PLATS) default o a clean depend echo none - -# DO NOT DELETE - -lapi.o: lapi.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \ - lobject.h ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h lstring.h \ - ltable.h lundump.h lvm.h -lauxlib.o: lauxlib.c lprefix.h lua.h luaconf.h lauxlib.h -lbaselib.o: lbaselib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h -lbitlib.o: lbitlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h -lcode.o: lcode.c lprefix.h lua.h luaconf.h lcode.h llex.h lobject.h \ - llimits.h lzio.h lmem.h lopcodes.h lparser.h ldebug.h lstate.h ltm.h \ - ldo.h lgc.h lstring.h ltable.h lvm.h -lcorolib.o: lcorolib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h -lctype.o: lctype.c lprefix.h lctype.h lua.h luaconf.h llimits.h -ldblib.o: ldblib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h -ldebug.o: ldebug.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \ - lobject.h ltm.h lzio.h lmem.h lcode.h llex.h lopcodes.h lparser.h \ - ldebug.h ldo.h lfunc.h lstring.h lgc.h ltable.h lvm.h -ldo.o: ldo.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \ - lobject.h ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h lopcodes.h \ - lparser.h lstring.h ltable.h lundump.h lvm.h -ldump.o: ldump.c lprefix.h lua.h luaconf.h lobject.h llimits.h lstate.h \ - ltm.h lzio.h lmem.h lundump.h -lfunc.o: lfunc.c lprefix.h lua.h luaconf.h lfunc.h lobject.h llimits.h \ - lgc.h lstate.h ltm.h lzio.h lmem.h -lgc.o: lgc.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \ - llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h lstring.h ltable.h -linit.o: linit.c lprefix.h lua.h luaconf.h lualib.h lauxlib.h -liolib.o: liolib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h -llex.o: llex.c lprefix.h lua.h luaconf.h lctype.h llimits.h ldebug.h \ - lstate.h lobject.h ltm.h lzio.h lmem.h ldo.h lgc.h llex.h lparser.h \ - lstring.h ltable.h -lmathlib.o: lmathlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h -lmem.o: lmem.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \ - llimits.h ltm.h lzio.h lmem.h ldo.h lgc.h -loadlib.o: loadlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h -lobject.o: lobject.c lprefix.h lua.h luaconf.h lctype.h llimits.h \ - ldebug.h lstate.h lobject.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h \ - lvm.h -lopcodes.o: lopcodes.c lprefix.h lopcodes.h llimits.h lua.h luaconf.h -loslib.o: loslib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h -lparser.o: lparser.c lprefix.h lua.h luaconf.h lcode.h llex.h lobject.h \ - llimits.h lzio.h lmem.h lopcodes.h lparser.h ldebug.h lstate.h ltm.h \ - ldo.h lfunc.h lstring.h lgc.h ltable.h -lstate.o: lstate.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \ - lobject.h ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h llex.h \ - lstring.h ltable.h -lstring.o: lstring.c lprefix.h lua.h luaconf.h ldebug.h lstate.h \ - lobject.h llimits.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h -lstrlib.o: lstrlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h -ltable.o: ltable.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \ - llimits.h ltm.h lzio.h lmem.h ldo.h lgc.h lstring.h ltable.h lvm.h -ltablib.o: ltablib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h -ltm.o: ltm.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \ - llimits.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h ltable.h lvm.h -lua.o: lua.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h -luac.o: luac.c lprefix.h lua.h luaconf.h lauxlib.h lobject.h llimits.h \ - lstate.h ltm.h lzio.h lmem.h lundump.h ldebug.h lopcodes.h -lundump.o: lundump.c lprefix.h lua.h luaconf.h ldebug.h lstate.h \ - lobject.h llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lstring.h lgc.h \ - lundump.h -lutf8lib.o: lutf8lib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h -lvm.o: lvm.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \ - llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h lopcodes.h lstring.h \ - ltable.h lvm.h -lzio.o: lzio.c lprefix.h lua.h luaconf.h llimits.h lmem.h lstate.h \ - lobject.h ltm.h lzio.h - -# (end of Makefile) diff --git a/deps/rcheevos/test/lua/src/lapi.c b/deps/rcheevos/test/lua/src/lapi.c deleted file mode 100644 index 0097d070b2..0000000000 --- a/deps/rcheevos/test/lua/src/lapi.c +++ /dev/null @@ -1,1298 +0,0 @@ -/* -** $Id: lapi.c,v 2.259 2016/02/29 14:27:14 roberto Exp $ -** Lua API -** See Copyright Notice in lua.h -*/ - -#define lapi_c -#define LUA_CORE - -#include "lprefix.h" - - -#include -#include - -#include "lua.h" - -#include "lapi.h" -#include "ldebug.h" -#include "ldo.h" -#include "lfunc.h" -#include "lgc.h" -#include "lmem.h" -#include "lobject.h" -#include "lstate.h" -#include "lstring.h" -#include "ltable.h" -#include "ltm.h" -#include "lundump.h" -#include "lvm.h" - - - -const char lua_ident[] = - "$LuaVersion: " LUA_COPYRIGHT " $" - "$LuaAuthors: " LUA_AUTHORS " $"; - - -/* value at a non-valid index */ -#define NONVALIDVALUE cast(TValue *, luaO_nilobject) - -/* corresponding test */ -#define isvalid(o) ((o) != luaO_nilobject) - -/* test for pseudo index */ -#define ispseudo(i) ((i) <= LUA_REGISTRYINDEX) - -/* test for upvalue */ -#define isupvalue(i) ((i) < LUA_REGISTRYINDEX) - -/* test for valid but not pseudo index */ -#define isstackindex(i, o) (isvalid(o) && !ispseudo(i)) - -#define api_checkvalidindex(l,o) api_check(l, isvalid(o), "invalid index") - -#define api_checkstackindex(l, i, o) \ - api_check(l, isstackindex(i, o), "index not in the stack") - - -static TValue *index2addr (lua_State *L, int idx) { - CallInfo *ci = L->ci; - if (idx > 0) { - TValue *o = ci->func + idx; - api_check(L, idx <= ci->top - (ci->func + 1), "unacceptable index"); - if (o >= L->top) return NONVALIDVALUE; - else return o; - } - else if (!ispseudo(idx)) { /* negative index */ - api_check(L, idx != 0 && -idx <= L->top - (ci->func + 1), "invalid index"); - return L->top + idx; - } - else if (idx == LUA_REGISTRYINDEX) - return &G(L)->l_registry; - else { /* upvalues */ - idx = LUA_REGISTRYINDEX - idx; - api_check(L, idx <= MAXUPVAL + 1, "upvalue index too large"); - if (ttislcf(ci->func)) /* light C function? */ - return NONVALIDVALUE; /* it has no upvalues */ - else { - CClosure *func = clCvalue(ci->func); - return (idx <= func->nupvalues) ? &func->upvalue[idx-1] : NONVALIDVALUE; - } - } -} - - -/* -** to be called by 'lua_checkstack' in protected mode, to grow stack -** capturing memory errors -*/ -static void growstack (lua_State *L, void *ud) { - int size = *(int *)ud; - luaD_growstack(L, size); -} - - -LUA_API int lua_checkstack (lua_State *L, int n) { - int res; - CallInfo *ci = L->ci; - lua_lock(L); - api_check(L, n >= 0, "negative 'n'"); - if (L->stack_last - L->top > n) /* stack large enough? */ - res = 1; /* yes; check is OK */ - else { /* no; need to grow stack */ - int inuse = cast_int(L->top - L->stack) + EXTRC_STACK; - if (inuse > LUAI_MAXSTACK - n) /* can grow without overflow? */ - res = 0; /* no */ - else /* try to grow stack */ - res = (luaD_rawrunprotected(L, &growstack, &n) == LUA_OK); - } - if (res && ci->top < L->top + n) - ci->top = L->top + n; /* adjust frame top */ - lua_unlock(L); - return res; -} - - -LUA_API void lua_xmove (lua_State *from, lua_State *to, int n) { - int i; - if (from == to) return; - lua_lock(to); - api_checknelems(from, n); - api_check(from, G(from) == G(to), "moving among independent states"); - api_check(from, to->ci->top - to->top >= n, "stack overflow"); - from->top -= n; - for (i = 0; i < n; i++) { - setobj2s(to, to->top, from->top + i); - to->top++; /* stack already checked by previous 'api_check' */ - } - lua_unlock(to); -} - - -LUA_API lua_CFunction lua_atpanic (lua_State *L, lua_CFunction panicf) { - lua_CFunction old; - lua_lock(L); - old = G(L)->panic; - G(L)->panic = panicf; - lua_unlock(L); - return old; -} - - -LUA_API const lua_Number *lua_version (lua_State *L) { - static const lua_Number version = LUA_VERSION_NUM; - if (L == NULL) return &version; - else return G(L)->version; -} - - - -/* -** basic stack manipulation -*/ - - -/* -** convert an acceptable stack index into an absolute index -*/ -LUA_API int lua_absindex (lua_State *L, int idx) { - return (idx > 0 || ispseudo(idx)) - ? idx - : cast_int(L->top - L->ci->func) + idx; -} - - -LUA_API int lua_gettop (lua_State *L) { - return cast_int(L->top - (L->ci->func + 1)); -} - - -LUA_API void lua_settop (lua_State *L, int idx) { - StkId func = L->ci->func; - lua_lock(L); - if (idx >= 0) { - api_check(L, idx <= L->stack_last - (func + 1), "new top too large"); - while (L->top < (func + 1) + idx) - setnilvalue(L->top++); - L->top = (func + 1) + idx; - } - else { - api_check(L, -(idx+1) <= (L->top - (func + 1)), "invalid new top"); - L->top += idx+1; /* 'subtract' index (index is negative) */ - } - lua_unlock(L); -} - - -/* -** Reverse the stack segment from 'from' to 'to' -** (auxiliary to 'lua_rotate') -*/ -static void reverse (lua_State *L, StkId from, StkId to) { - for (; from < to; from++, to--) { - TValue temp; - setobj(L, &temp, from); - setobjs2s(L, from, to); - setobj2s(L, to, &temp); - } -} - - -/* -** Let x = AB, where A is a prefix of length 'n'. Then, -** rotate x n == BA. But BA == (A^r . B^r)^r. -*/ -LUA_API void lua_rotate (lua_State *L, int idx, int n) { - StkId p, t, m; - lua_lock(L); - t = L->top - 1; /* end of stack segment being rotated */ - p = index2addr(L, idx); /* start of segment */ - api_checkstackindex(L, idx, p); - api_check(L, (n >= 0 ? n : -n) <= (t - p + 1), "invalid 'n'"); - m = (n >= 0 ? t - n : p - n - 1); /* end of prefix */ - reverse(L, p, m); /* reverse the prefix with length 'n' */ - reverse(L, m + 1, t); /* reverse the suffix */ - reverse(L, p, t); /* reverse the entire segment */ - lua_unlock(L); -} - - -LUA_API void lua_copy (lua_State *L, int fromidx, int toidx) { - TValue *fr, *to; - lua_lock(L); - fr = index2addr(L, fromidx); - to = index2addr(L, toidx); - api_checkvalidindex(L, to); - setobj(L, to, fr); - if (isupvalue(toidx)) /* function upvalue? */ - luaC_barrier(L, clCvalue(L->ci->func), fr); - /* LUA_REGISTRYINDEX does not need gc barrier - (collector revisits it before finishing collection) */ - lua_unlock(L); -} - - -LUA_API void lua_pushvalue (lua_State *L, int idx) { - lua_lock(L); - setobj2s(L, L->top, index2addr(L, idx)); - api_incr_top(L); - lua_unlock(L); -} - - - -/* -** access functions (stack -> C) -*/ - - -LUA_API int lua_type (lua_State *L, int idx) { - StkId o = index2addr(L, idx); - return (isvalid(o) ? ttnov(o) : LUA_TNONE); -} - - -LUA_API const char *lua_typename (lua_State *L, int t) { - UNUSED(L); - api_check(L, LUA_TNONE <= t && t < LUA_NUMTAGS, "invalid tag"); - return ttypename(t); -} - - -LUA_API int lua_iscfunction (lua_State *L, int idx) { - StkId o = index2addr(L, idx); - return (ttislcf(o) || (ttisCclosure(o))); -} - - -LUA_API int lua_isinteger (lua_State *L, int idx) { - StkId o = index2addr(L, idx); - return ttisinteger(o); -} - - -LUA_API int lua_isnumber (lua_State *L, int idx) { - lua_Number n; - const TValue *o = index2addr(L, idx); - return tonumber(o, &n); -} - - -LUA_API int lua_isstring (lua_State *L, int idx) { - const TValue *o = index2addr(L, idx); - return (ttisstring(o) || cvt2str(o)); -} - - -LUA_API int lua_isuserdata (lua_State *L, int idx) { - const TValue *o = index2addr(L, idx); - return (ttisfulluserdata(o) || ttislightuserdata(o)); -} - - -LUA_API int lua_rawequal (lua_State *L, int index1, int index2) { - StkId o1 = index2addr(L, index1); - StkId o2 = index2addr(L, index2); - return (isvalid(o1) && isvalid(o2)) ? luaV_rawequalobj(o1, o2) : 0; -} - - -LUA_API void lua_arith (lua_State *L, int op) { - lua_lock(L); - if (op != LUA_OPUNM && op != LUA_OPBNOT) - api_checknelems(L, 2); /* all other operations expect two operands */ - else { /* for unary operations, add fake 2nd operand */ - api_checknelems(L, 1); - setobjs2s(L, L->top, L->top - 1); - api_incr_top(L); - } - /* first operand at top - 2, second at top - 1; result go to top - 2 */ - luaO_arith(L, op, L->top - 2, L->top - 1, L->top - 2); - L->top--; /* remove second operand */ - lua_unlock(L); -} - - -LUA_API int lua_compare (lua_State *L, int index1, int index2, int op) { - StkId o1, o2; - int i = 0; - lua_lock(L); /* may call tag method */ - o1 = index2addr(L, index1); - o2 = index2addr(L, index2); - if (isvalid(o1) && isvalid(o2)) { - switch (op) { - case LUA_OPEQ: i = luaV_equalobj(L, o1, o2); break; - case LUA_OPLT: i = luaV_lessthan(L, o1, o2); break; - case LUA_OPLE: i = luaV_lessequal(L, o1, o2); break; - default: api_check(L, 0, "invalid option"); - } - } - lua_unlock(L); - return i; -} - - -LUA_API size_t lua_stringtonumber (lua_State *L, const char *s) { - size_t sz = luaO_str2num(s, L->top); - if (sz != 0) - api_incr_top(L); - return sz; -} - - -LUA_API lua_Number lua_tonumberx (lua_State *L, int idx, int *pisnum) { - lua_Number n; - const TValue *o = index2addr(L, idx); - int isnum = tonumber(o, &n); - if (!isnum) - n = 0; /* call to 'tonumber' may change 'n' even if it fails */ - if (pisnum) *pisnum = isnum; - return n; -} - - -LUA_API lua_Integer lua_tointegerx (lua_State *L, int idx, int *pisnum) { - lua_Integer res; - const TValue *o = index2addr(L, idx); - int isnum = tointeger(o, &res); - if (!isnum) - res = 0; /* call to 'tointeger' may change 'n' even if it fails */ - if (pisnum) *pisnum = isnum; - return res; -} - - -LUA_API int lua_toboolean (lua_State *L, int idx) { - const TValue *o = index2addr(L, idx); - return !l_isfalse(o); -} - - -LUA_API const char *lua_tolstring (lua_State *L, int idx, size_t *len) { - StkId o = index2addr(L, idx); - if (!ttisstring(o)) { - if (!cvt2str(o)) { /* not convertible? */ - if (len != NULL) *len = 0; - return NULL; - } - lua_lock(L); /* 'luaO_tostring' may create a new string */ - luaO_tostring(L, o); - luaC_checkGC(L); - o = index2addr(L, idx); /* previous call may reallocate the stack */ - lua_unlock(L); - } - if (len != NULL) - *len = vslen(o); - return svalue(o); -} - - -LUA_API size_t lua_rawlen (lua_State *L, int idx) { - StkId o = index2addr(L, idx); - switch (ttype(o)) { - case LUA_TSHRSTR: return tsvalue(o)->shrlen; - case LUA_TLNGSTR: return tsvalue(o)->u.lnglen; - case LUA_TUSERDATA: return uvalue(o)->len; - case LUA_TTABLE: return luaH_getn(hvalue(o)); - default: return 0; - } -} - - -LUA_API lua_CFunction lua_tocfunction (lua_State *L, int idx) { - StkId o = index2addr(L, idx); - if (ttislcf(o)) return fvalue(o); - else if (ttisCclosure(o)) - return clCvalue(o)->f; - else return NULL; /* not a C function */ -} - - -LUA_API void *lua_touserdata (lua_State *L, int idx) { - StkId o = index2addr(L, idx); - switch (ttnov(o)) { - case LUA_TUSERDATA: return getudatamem(uvalue(o)); - case LUA_TLIGHTUSERDATA: return pvalue(o); - default: return NULL; - } -} - - -LUA_API lua_State *lua_tothread (lua_State *L, int idx) { - StkId o = index2addr(L, idx); - return (!ttisthread(o)) ? NULL : thvalue(o); -} - - -LUA_API const void *lua_topointer (lua_State *L, int idx) { - StkId o = index2addr(L, idx); - switch (ttype(o)) { - case LUA_TTABLE: return hvalue(o); - case LUA_TLCL: return clLvalue(o); - case LUA_TCCL: return clCvalue(o); - case LUA_TLCF: return cast(void *, cast(size_t, fvalue(o))); - case LUA_TTHREAD: return thvalue(o); - case LUA_TUSERDATA: return getudatamem(uvalue(o)); - case LUA_TLIGHTUSERDATA: return pvalue(o); - default: return NULL; - } -} - - - -/* -** push functions (C -> stack) -*/ - - -LUA_API void lua_pushnil (lua_State *L) { - lua_lock(L); - setnilvalue(L->top); - api_incr_top(L); - lua_unlock(L); -} - - -LUA_API void lua_pushnumber (lua_State *L, lua_Number n) { - lua_lock(L); - setfltvalue(L->top, n); - api_incr_top(L); - lua_unlock(L); -} - - -LUA_API void lua_pushinteger (lua_State *L, lua_Integer n) { - lua_lock(L); - setivalue(L->top, n); - api_incr_top(L); - lua_unlock(L); -} - - -/* -** Pushes on the stack a string with given length. Avoid using 's' when -** 'len' == 0 (as 's' can be NULL in that case), due to later use of -** 'memcmp' and 'memcpy'. -*/ -LUA_API const char *lua_pushlstring (lua_State *L, const char *s, size_t len) { - TString *ts; - lua_lock(L); - ts = (len == 0) ? luaS_new(L, "") : luaS_newlstr(L, s, len); - setsvalue2s(L, L->top, ts); - api_incr_top(L); - luaC_checkGC(L); - lua_unlock(L); - return getstr(ts); -} - - -LUA_API const char *lua_pushstring (lua_State *L, const char *s) { - lua_lock(L); - if (s == NULL) - setnilvalue(L->top); - else { - TString *ts; - ts = luaS_new(L, s); - setsvalue2s(L, L->top, ts); - s = getstr(ts); /* internal copy's address */ - } - api_incr_top(L); - luaC_checkGC(L); - lua_unlock(L); - return s; -} - - -LUA_API const char *lua_pushvfstring (lua_State *L, const char *fmt, - va_list argp) { - const char *ret; - lua_lock(L); - ret = luaO_pushvfstring(L, fmt, argp); - luaC_checkGC(L); - lua_unlock(L); - return ret; -} - - -LUA_API const char *lua_pushfstring (lua_State *L, const char *fmt, ...) { - const char *ret; - va_list argp; - lua_lock(L); - va_start(argp, fmt); - ret = luaO_pushvfstring(L, fmt, argp); - va_end(argp); - luaC_checkGC(L); - lua_unlock(L); - return ret; -} - - -LUA_API void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n) { - lua_lock(L); - if (n == 0) { - setfvalue(L->top, fn); - } - else { - CClosure *cl; - api_checknelems(L, n); - api_check(L, n <= MAXUPVAL, "upvalue index too large"); - cl = luaF_newCclosure(L, n); - cl->f = fn; - L->top -= n; - while (n--) { - setobj2n(L, &cl->upvalue[n], L->top + n); - /* does not need barrier because closure is white */ - } - setclCvalue(L, L->top, cl); - } - api_incr_top(L); - luaC_checkGC(L); - lua_unlock(L); -} - - -LUA_API void lua_pushboolean (lua_State *L, int b) { - lua_lock(L); - setbvalue(L->top, (b != 0)); /* ensure that true is 1 */ - api_incr_top(L); - lua_unlock(L); -} - - -LUA_API void lua_pushlightuserdata (lua_State *L, void *p) { - lua_lock(L); - setpvalue(L->top, p); - api_incr_top(L); - lua_unlock(L); -} - - -LUA_API int lua_pushthread (lua_State *L) { - lua_lock(L); - setthvalue(L, L->top, L); - api_incr_top(L); - lua_unlock(L); - return (G(L)->mainthread == L); -} - - - -/* -** get functions (Lua -> stack) -*/ - - -static int auxgetstr (lua_State *L, const TValue *t, const char *k) { - const TValue *slot; - TString *str = luaS_new(L, k); - if (luaV_fastget(L, t, str, slot, luaH_getstr)) { - setobj2s(L, L->top, slot); - api_incr_top(L); - } - else { - setsvalue2s(L, L->top, str); - api_incr_top(L); - luaV_finishget(L, t, L->top - 1, L->top - 1, slot); - } - lua_unlock(L); - return ttnov(L->top - 1); -} - - -LUA_API int lua_getglobal (lua_State *L, const char *name) { - Table *reg = hvalue(&G(L)->l_registry); - lua_lock(L); - return auxgetstr(L, luaH_getint(reg, LUA_RIDX_GLOBALS), name); -} - - -LUA_API int lua_gettable (lua_State *L, int idx) { - StkId t; - lua_lock(L); - t = index2addr(L, idx); - luaV_gettable(L, t, L->top - 1, L->top - 1); - lua_unlock(L); - return ttnov(L->top - 1); -} - - -LUA_API int lua_getfield (lua_State *L, int idx, const char *k) { - lua_lock(L); - return auxgetstr(L, index2addr(L, idx), k); -} - - -LUA_API int lua_geti (lua_State *L, int idx, lua_Integer n) { - StkId t; - const TValue *slot; - lua_lock(L); - t = index2addr(L, idx); - if (luaV_fastget(L, t, n, slot, luaH_getint)) { - setobj2s(L, L->top, slot); - api_incr_top(L); - } - else { - setivalue(L->top, n); - api_incr_top(L); - luaV_finishget(L, t, L->top - 1, L->top - 1, slot); - } - lua_unlock(L); - return ttnov(L->top - 1); -} - - -LUA_API int lua_rawget (lua_State *L, int idx) { - StkId t; - lua_lock(L); - t = index2addr(L, idx); - api_check(L, ttistable(t), "table expected"); - setobj2s(L, L->top - 1, luaH_get(hvalue(t), L->top - 1)); - lua_unlock(L); - return ttnov(L->top - 1); -} - - -LUA_API int lua_rawgeti (lua_State *L, int idx, lua_Integer n) { - StkId t; - lua_lock(L); - t = index2addr(L, idx); - api_check(L, ttistable(t), "table expected"); - setobj2s(L, L->top, luaH_getint(hvalue(t), n)); - api_incr_top(L); - lua_unlock(L); - return ttnov(L->top - 1); -} - - -LUA_API int lua_rawgetp (lua_State *L, int idx, const void *p) { - StkId t; - TValue k; - lua_lock(L); - t = index2addr(L, idx); - api_check(L, ttistable(t), "table expected"); - setpvalue(&k, cast(void *, p)); - setobj2s(L, L->top, luaH_get(hvalue(t), &k)); - api_incr_top(L); - lua_unlock(L); - return ttnov(L->top - 1); -} - - -LUA_API void lua_createtable (lua_State *L, int narray, int nrec) { - Table *t; - lua_lock(L); - t = luaH_new(L); - sethvalue(L, L->top, t); - api_incr_top(L); - if (narray > 0 || nrec > 0) - luaH_resize(L, t, narray, nrec); - luaC_checkGC(L); - lua_unlock(L); -} - - -LUA_API int lua_getmetatable (lua_State *L, int objindex) { - const TValue *obj; - Table *mt; - int res = 0; - lua_lock(L); - obj = index2addr(L, objindex); - switch (ttnov(obj)) { - case LUA_TTABLE: - mt = hvalue(obj)->metatable; - break; - case LUA_TUSERDATA: - mt = uvalue(obj)->metatable; - break; - default: - mt = G(L)->mt[ttnov(obj)]; - break; - } - if (mt != NULL) { - sethvalue(L, L->top, mt); - api_incr_top(L); - res = 1; - } - lua_unlock(L); - return res; -} - - -LUA_API int lua_getuservalue (lua_State *L, int idx) { - StkId o; - lua_lock(L); - o = index2addr(L, idx); - api_check(L, ttisfulluserdata(o), "full userdata expected"); - getuservalue(L, uvalue(o), L->top); - api_incr_top(L); - lua_unlock(L); - return ttnov(L->top - 1); -} - - -/* -** set functions (stack -> Lua) -*/ - -/* -** t[k] = value at the top of the stack (where 'k' is a string) -*/ -static void auxsetstr (lua_State *L, const TValue *t, const char *k) { - const TValue *slot; - TString *str = luaS_new(L, k); - api_checknelems(L, 1); - if (luaV_fastset(L, t, str, slot, luaH_getstr, L->top - 1)) - L->top--; /* pop value */ - else { - setsvalue2s(L, L->top, str); /* push 'str' (to make it a TValue) */ - api_incr_top(L); - luaV_finishset(L, t, L->top - 1, L->top - 2, slot); - L->top -= 2; /* pop value and key */ - } - lua_unlock(L); /* lock done by caller */ -} - - -LUA_API void lua_setglobal (lua_State *L, const char *name) { - Table *reg = hvalue(&G(L)->l_registry); - lua_lock(L); /* unlock done in 'auxsetstr' */ - auxsetstr(L, luaH_getint(reg, LUA_RIDX_GLOBALS), name); -} - - -LUA_API void lua_settable (lua_State *L, int idx) { - StkId t; - lua_lock(L); - api_checknelems(L, 2); - t = index2addr(L, idx); - luaV_settable(L, t, L->top - 2, L->top - 1); - L->top -= 2; /* pop index and value */ - lua_unlock(L); -} - - -LUA_API void lua_setfield (lua_State *L, int idx, const char *k) { - lua_lock(L); /* unlock done in 'auxsetstr' */ - auxsetstr(L, index2addr(L, idx), k); -} - - -LUA_API void lua_seti (lua_State *L, int idx, lua_Integer n) { - StkId t; - const TValue *slot; - lua_lock(L); - api_checknelems(L, 1); - t = index2addr(L, idx); - if (luaV_fastset(L, t, n, slot, luaH_getint, L->top - 1)) - L->top--; /* pop value */ - else { - setivalue(L->top, n); - api_incr_top(L); - luaV_finishset(L, t, L->top - 1, L->top - 2, slot); - L->top -= 2; /* pop value and key */ - } - lua_unlock(L); -} - - -LUA_API void lua_rawset (lua_State *L, int idx) { - StkId o; - TValue *slot; - lua_lock(L); - api_checknelems(L, 2); - o = index2addr(L, idx); - api_check(L, ttistable(o), "table expected"); - slot = luaH_set(L, hvalue(o), L->top - 2); - setobj2t(L, slot, L->top - 1); - invalidateTMcache(hvalue(o)); - luaC_barrierback(L, hvalue(o), L->top-1); - L->top -= 2; - lua_unlock(L); -} - - -LUA_API void lua_rawseti (lua_State *L, int idx, lua_Integer n) { - StkId o; - lua_lock(L); - api_checknelems(L, 1); - o = index2addr(L, idx); - api_check(L, ttistable(o), "table expected"); - luaH_setint(L, hvalue(o), n, L->top - 1); - luaC_barrierback(L, hvalue(o), L->top-1); - L->top--; - lua_unlock(L); -} - - -LUA_API void lua_rawsetp (lua_State *L, int idx, const void *p) { - StkId o; - TValue k, *slot; - lua_lock(L); - api_checknelems(L, 1); - o = index2addr(L, idx); - api_check(L, ttistable(o), "table expected"); - setpvalue(&k, cast(void *, p)); - slot = luaH_set(L, hvalue(o), &k); - setobj2t(L, slot, L->top - 1); - luaC_barrierback(L, hvalue(o), L->top - 1); - L->top--; - lua_unlock(L); -} - - -LUA_API int lua_setmetatable (lua_State *L, int objindex) { - TValue *obj; - Table *mt; - lua_lock(L); - api_checknelems(L, 1); - obj = index2addr(L, objindex); - if (ttisnil(L->top - 1)) - mt = NULL; - else { - api_check(L, ttistable(L->top - 1), "table expected"); - mt = hvalue(L->top - 1); - } - switch (ttnov(obj)) { - case LUA_TTABLE: { - hvalue(obj)->metatable = mt; - if (mt) { - luaC_objbarrier(L, gcvalue(obj), mt); - luaC_checkfinalizer(L, gcvalue(obj), mt); - } - break; - } - case LUA_TUSERDATA: { - uvalue(obj)->metatable = mt; - if (mt) { - luaC_objbarrier(L, uvalue(obj), mt); - luaC_checkfinalizer(L, gcvalue(obj), mt); - } - break; - } - default: { - G(L)->mt[ttnov(obj)] = mt; - break; - } - } - L->top--; - lua_unlock(L); - return 1; -} - - -LUA_API void lua_setuservalue (lua_State *L, int idx) { - StkId o; - lua_lock(L); - api_checknelems(L, 1); - o = index2addr(L, idx); - api_check(L, ttisfulluserdata(o), "full userdata expected"); - setuservalue(L, uvalue(o), L->top - 1); - luaC_barrier(L, gcvalue(o), L->top - 1); - L->top--; - lua_unlock(L); -} - - -/* -** 'load' and 'call' functions (run Lua code) -*/ - - -#define checkresults(L,na,nr) \ - api_check(L, (nr) == LUA_MULTRET || (L->ci->top - L->top >= (nr) - (na)), \ - "results from function overflow current stack size") - - -LUA_API void lua_callk (lua_State *L, int nargs, int nresults, - lua_KContext ctx, lua_KFunction k) { - StkId func; - lua_lock(L); - api_check(L, k == NULL || !isLua(L->ci), - "cannot use continuations inside hooks"); - api_checknelems(L, nargs+1); - api_check(L, L->status == LUA_OK, "cannot do calls on non-normal thread"); - checkresults(L, nargs, nresults); - func = L->top - (nargs+1); - if (k != NULL && L->nny == 0) { /* need to prepare continuation? */ - L->ci->u.c.k = k; /* save continuation */ - L->ci->u.c.ctx = ctx; /* save context */ - luaD_call(L, func, nresults); /* do the call */ - } - else /* no continuation or no yieldable */ - luaD_callnoyield(L, func, nresults); /* just do the call */ - adjustresults(L, nresults); - lua_unlock(L); -} - - - -/* -** Execute a protected call. -*/ -struct CallS { /* data to 'f_call' */ - StkId func; - int nresults; -}; - - -static void f_call (lua_State *L, void *ud) { - struct CallS *c = cast(struct CallS *, ud); - luaD_callnoyield(L, c->func, c->nresults); -} - - - -LUA_API int lua_pcallk (lua_State *L, int nargs, int nresults, int errfunc, - lua_KContext ctx, lua_KFunction k) { - struct CallS c; - int status; - ptrdiff_t func; - lua_lock(L); - api_check(L, k == NULL || !isLua(L->ci), - "cannot use continuations inside hooks"); - api_checknelems(L, nargs+1); - api_check(L, L->status == LUA_OK, "cannot do calls on non-normal thread"); - checkresults(L, nargs, nresults); - if (errfunc == 0) - func = 0; - else { - StkId o = index2addr(L, errfunc); - api_checkstackindex(L, errfunc, o); - func = savestack(L, o); - } - c.func = L->top - (nargs+1); /* function to be called */ - if (k == NULL || L->nny > 0) { /* no continuation or no yieldable? */ - c.nresults = nresults; /* do a 'conventional' protected call */ - status = luaD_pcall(L, f_call, &c, savestack(L, c.func), func); - } - else { /* prepare continuation (call is already protected by 'resume') */ - CallInfo *ci = L->ci; - ci->u.c.k = k; /* save continuation */ - ci->u.c.ctx = ctx; /* save context */ - /* save information for error recovery */ - ci->extra = savestack(L, c.func); - ci->u.c.old_errfunc = L->errfunc; - L->errfunc = func; - setoah(ci->callstatus, L->allowhook); /* save value of 'allowhook' */ - ci->callstatus |= CIST_YPCALL; /* function can do error recovery */ - luaD_call(L, c.func, nresults); /* do the call */ - ci->callstatus &= ~CIST_YPCALL; - L->errfunc = ci->u.c.old_errfunc; - status = LUA_OK; /* if it is here, there were no errors */ - } - adjustresults(L, nresults); - lua_unlock(L); - return status; -} - - -LUA_API int lua_load (lua_State *L, lua_Reader reader, void *data, - const char *chunkname, const char *mode) { - ZIO z; - int status; - lua_lock(L); - if (!chunkname) chunkname = "?"; - luaZ_init(L, &z, reader, data); - status = luaD_protectedparser(L, &z, chunkname, mode); - if (status == LUA_OK) { /* no errors? */ - LClosure *f = clLvalue(L->top - 1); /* get newly created function */ - if (f->nupvalues >= 1) { /* does it have an upvalue? */ - /* get global table from registry */ - Table *reg = hvalue(&G(L)->l_registry); - const TValue *gt = luaH_getint(reg, LUA_RIDX_GLOBALS); - /* set global table as 1st upvalue of 'f' (may be LUA_ENV) */ - setobj(L, f->upvals[0]->v, gt); - luaC_upvalbarrier(L, f->upvals[0]); - } - } - lua_unlock(L); - return status; -} - - -LUA_API int lua_dump (lua_State *L, lua_Writer writer, void *data, int strip) { - int status; - TValue *o; - lua_lock(L); - api_checknelems(L, 1); - o = L->top - 1; - if (isLfunction(o)) - status = luaU_dump(L, getproto(o), writer, data, strip); - else - status = 1; - lua_unlock(L); - return status; -} - - -LUA_API int lua_status (lua_State *L) { - return L->status; -} - - -/* -** Garbage-collection function -*/ - -LUA_API int lua_gc (lua_State *L, int what, int data) { - int res = 0; - global_State *g; - lua_lock(L); - g = G(L); - switch (what) { - case LUA_GCSTOP: { - g->gcrunning = 0; - break; - } - case LUA_GCRESTART: { - luaE_setdebt(g, 0); - g->gcrunning = 1; - break; - } - case LUA_GCCOLLECT: { - luaC_fullgc(L, 0); - break; - } - case LUA_GCCOUNT: { - /* GC values are expressed in Kbytes: #bytes/2^10 */ - res = cast_int(gettotalbytes(g) >> 10); - break; - } - case LUA_GCCOUNTB: { - res = cast_int(gettotalbytes(g) & 0x3ff); - break; - } - case LUA_GCSTEP: { - l_mem debt = 1; /* =1 to signal that it did an actual step */ - lu_byte oldrunning = g->gcrunning; - g->gcrunning = 1; /* allow GC to run */ - if (data == 0) { - luaE_setdebt(g, -GCSTEPSIZE); /* to do a "small" step */ - luaC_step(L); - } - else { /* add 'data' to total debt */ - debt = cast(l_mem, data) * 1024 + g->GCdebt; - luaE_setdebt(g, debt); - luaC_checkGC(L); - } - g->gcrunning = oldrunning; /* restore previous state */ - if (debt > 0 && g->gcstate == GCSpause) /* end of cycle? */ - res = 1; /* signal it */ - break; - } - case LUA_GCSETPAUSE: { - res = g->gcpause; - g->gcpause = data; - break; - } - case LUA_GCSETSTEPMUL: { - res = g->gcstepmul; - if (data < 40) data = 40; /* avoid ridiculous low values (and 0) */ - g->gcstepmul = data; - break; - } - case LUA_GCISRUNNING: { - res = g->gcrunning; - break; - } - default: res = -1; /* invalid option */ - } - lua_unlock(L); - return res; -} - - - -/* -** miscellaneous functions -*/ - - -LUA_API int lua_error (lua_State *L) { - lua_lock(L); - api_checknelems(L, 1); - luaG_errormsg(L); - /* code unreachable; will unlock when control actually leaves the kernel */ - return 0; /* to avoid warnings */ -} - - -LUA_API int lua_next (lua_State *L, int idx) { - StkId t; - int more; - lua_lock(L); - t = index2addr(L, idx); - api_check(L, ttistable(t), "table expected"); - more = luaH_next(L, hvalue(t), L->top - 1); - if (more) { - api_incr_top(L); - } - else /* no more elements */ - L->top -= 1; /* remove key */ - lua_unlock(L); - return more; -} - - -LUA_API void lua_concat (lua_State *L, int n) { - lua_lock(L); - api_checknelems(L, n); - if (n >= 2) { - luaV_concat(L, n); - } - else if (n == 0) { /* push empty string */ - setsvalue2s(L, L->top, luaS_newlstr(L, "", 0)); - api_incr_top(L); - } - /* else n == 1; nothing to do */ - luaC_checkGC(L); - lua_unlock(L); -} - - -LUA_API void lua_len (lua_State *L, int idx) { - StkId t; - lua_lock(L); - t = index2addr(L, idx); - luaV_objlen(L, L->top, t); - api_incr_top(L); - lua_unlock(L); -} - - -LUA_API lua_Alloc lua_getallocf (lua_State *L, void **ud) { - lua_Alloc f; - lua_lock(L); - if (ud) *ud = G(L)->ud; - f = G(L)->frealloc; - lua_unlock(L); - return f; -} - - -LUA_API void lua_setallocf (lua_State *L, lua_Alloc f, void *ud) { - lua_lock(L); - G(L)->ud = ud; - G(L)->frealloc = f; - lua_unlock(L); -} - - -LUA_API void *lua_newuserdata (lua_State *L, size_t size) { - Udata *u; - lua_lock(L); - u = luaS_newudata(L, size); - setuvalue(L, L->top, u); - api_incr_top(L); - luaC_checkGC(L); - lua_unlock(L); - return getudatamem(u); -} - - - -static const char *aux_upvalue (StkId fi, int n, TValue **val, - CClosure **owner, UpVal **uv) { - switch (ttype(fi)) { - case LUA_TCCL: { /* C closure */ - CClosure *f = clCvalue(fi); - if (!(1 <= n && n <= f->nupvalues)) return NULL; - *val = &f->upvalue[n-1]; - if (owner) *owner = f; - return ""; - } - case LUA_TLCL: { /* Lua closure */ - LClosure *f = clLvalue(fi); - TString *name; - Proto *p = f->p; - if (!(1 <= n && n <= p->sizeupvalues)) return NULL; - *val = f->upvals[n-1]->v; - if (uv) *uv = f->upvals[n - 1]; - name = p->upvalues[n-1].name; - return (name == NULL) ? "(*no name)" : getstr(name); - } - default: return NULL; /* not a closure */ - } -} - - -LUA_API const char *lua_getupvalue (lua_State *L, int funcindex, int n) { - const char *name; - TValue *val = NULL; /* to avoid warnings */ - lua_lock(L); - name = aux_upvalue(index2addr(L, funcindex), n, &val, NULL, NULL); - if (name) { - setobj2s(L, L->top, val); - api_incr_top(L); - } - lua_unlock(L); - return name; -} - - -LUA_API const char *lua_setupvalue (lua_State *L, int funcindex, int n) { - const char *name; - TValue *val = NULL; /* to avoid warnings */ - CClosure *owner = NULL; - UpVal *uv = NULL; - StkId fi; - lua_lock(L); - fi = index2addr(L, funcindex); - api_checknelems(L, 1); - name = aux_upvalue(fi, n, &val, &owner, &uv); - if (name) { - L->top--; - setobj(L, val, L->top); - if (owner) { luaC_barrier(L, owner, L->top); } - else if (uv) { luaC_upvalbarrier(L, uv); } - } - lua_unlock(L); - return name; -} - - -static UpVal **getupvalref (lua_State *L, int fidx, int n, LClosure **pf) { - LClosure *f; - StkId fi = index2addr(L, fidx); - api_check(L, ttisLclosure(fi), "Lua function expected"); - f = clLvalue(fi); - api_check(L, (1 <= n && n <= f->p->sizeupvalues), "invalid upvalue index"); - if (pf) *pf = f; - return &f->upvals[n - 1]; /* get its upvalue pointer */ -} - - -LUA_API void *lua_upvalueid (lua_State *L, int fidx, int n) { - StkId fi = index2addr(L, fidx); - switch (ttype(fi)) { - case LUA_TLCL: { /* lua closure */ - return *getupvalref(L, fidx, n, NULL); - } - case LUA_TCCL: { /* C closure */ - CClosure *f = clCvalue(fi); - api_check(L, 1 <= n && n <= f->nupvalues, "invalid upvalue index"); - return &f->upvalue[n - 1]; - } - default: { - api_check(L, 0, "closure expected"); - return NULL; - } - } -} - - -LUA_API void lua_upvaluejoin (lua_State *L, int fidx1, int n1, - int fidx2, int n2) { - LClosure *f1; - UpVal **up1 = getupvalref(L, fidx1, n1, &f1); - UpVal **up2 = getupvalref(L, fidx2, n2, NULL); - luaC_upvdeccount(L, *up1); - *up1 = *up2; - (*up1)->refcount++; - if (upisopen(*up1)) (*up1)->u.open.touched = 1; - luaC_upvalbarrier(L, *up1); -} - - diff --git a/deps/rcheevos/test/lua/src/lapi.h b/deps/rcheevos/test/lua/src/lapi.h deleted file mode 100644 index 6d36dee3fb..0000000000 --- a/deps/rcheevos/test/lua/src/lapi.h +++ /dev/null @@ -1,24 +0,0 @@ -/* -** $Id: lapi.h,v 2.9 2015/03/06 19:49:50 roberto Exp $ -** Auxiliary functions from Lua API -** See Copyright Notice in lua.h -*/ - -#ifndef lapi_h -#define lapi_h - - -#include "llimits.h" -#include "lstate.h" - -#define api_incr_top(L) {L->top++; api_check(L, L->top <= L->ci->top, \ - "stack overflow");} - -#define adjustresults(L,nres) \ - { if ((nres) == LUA_MULTRET && L->ci->top < L->top) L->ci->top = L->top; } - -#define api_checknelems(L,n) api_check(L, (n) < (L->top - L->ci->func), \ - "not enough elements in the stack") - - -#endif diff --git a/deps/rcheevos/test/lua/src/lauxlib.c b/deps/rcheevos/test/lua/src/lauxlib.c deleted file mode 100644 index f7a383663e..0000000000 --- a/deps/rcheevos/test/lua/src/lauxlib.c +++ /dev/null @@ -1,1043 +0,0 @@ -/* -** $Id: lauxlib.c,v 1.289 2016/12/20 18:37:00 roberto Exp $ -** Auxiliary functions for building Lua libraries -** See Copyright Notice in lua.h -*/ - -#define lauxlib_c -#define LUA_LIB - -#include "lprefix.h" - - -#include -#include -#include -#include -#include - - -/* -** This file uses only the official API of Lua. -** Any function declared here could be written as an application function. -*/ - -#include "lua.h" - -#include "lauxlib.h" - - -/* -** {====================================================== -** Traceback -** ======================================================= -*/ - - -#define LEVELS1 10 /* size of the first part of the stack */ -#define LEVELS2 11 /* size of the second part of the stack */ - - - -/* -** search for 'objidx' in table at index -1. -** return 1 + string at top if find a good name. -*/ -static int findfield (lua_State *L, int objidx, int level) { - if (level == 0 || !lua_istable(L, -1)) - return 0; /* not found */ - lua_pushnil(L); /* start 'next' loop */ - while (lua_next(L, -2)) { /* for each pair in table */ - if (lua_type(L, -2) == LUA_TSTRING) { /* ignore non-string keys */ - if (lua_rawequal(L, objidx, -1)) { /* found object? */ - lua_pop(L, 1); /* remove value (but keep name) */ - return 1; - } - else if (findfield(L, objidx, level - 1)) { /* try recursively */ - lua_remove(L, -2); /* remove table (but keep name) */ - lua_pushliteral(L, "."); - lua_insert(L, -2); /* place '.' between the two names */ - lua_concat(L, 3); - return 1; - } - } - lua_pop(L, 1); /* remove value */ - } - return 0; /* not found */ -} - - -/* -** Search for a name for a function in all loaded modules -*/ -static int pushglobalfuncname (lua_State *L, lua_Debug *ar) { - int top = lua_gettop(L); - lua_getinfo(L, "f", ar); /* push function */ - lua_getfield(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE); - if (findfield(L, top + 1, 2)) { - const char *name = lua_tostring(L, -1); - if (strncmp(name, "_G.", 3) == 0) { /* name start with '_G.'? */ - lua_pushstring(L, name + 3); /* push name without prefix */ - lua_remove(L, -2); /* remove original name */ - } - lua_copy(L, -1, top + 1); /* move name to proper place */ - lua_pop(L, 2); /* remove pushed values */ - return 1; - } - else { - lua_settop(L, top); /* remove function and global table */ - return 0; - } -} - - -static void pushfuncname (lua_State *L, lua_Debug *ar) { - if (pushglobalfuncname(L, ar)) { /* try first a global name */ - lua_pushfstring(L, "function '%s'", lua_tostring(L, -1)); - lua_remove(L, -2); /* remove name */ - } - else if (*ar->namewhat != '\0') /* is there a name from code? */ - lua_pushfstring(L, "%s '%s'", ar->namewhat, ar->name); /* use it */ - else if (*ar->what == 'm') /* main? */ - lua_pushliteral(L, "main chunk"); - else if (*ar->what != 'C') /* for Lua functions, use */ - lua_pushfstring(L, "function <%s:%d>", ar->short_src, ar->linedefined); - else /* nothing left... */ - lua_pushliteral(L, "?"); -} - - -static int lastlevel (lua_State *L) { - lua_Debug ar; - int li = 1, le = 1; - /* find an upper bound */ - while (lua_getstack(L, le, &ar)) { li = le; le *= 2; } - /* do a binary search */ - while (li < le) { - int m = (li + le)/2; - if (lua_getstack(L, m, &ar)) li = m + 1; - else le = m; - } - return le - 1; -} - - -LUALIB_API void luaL_traceback (lua_State *L, lua_State *L1, - const char *msg, int level) { - lua_Debug ar; - int top = lua_gettop(L); - int last = lastlevel(L1); - int n1 = (last - level > LEVELS1 + LEVELS2) ? LEVELS1 : -1; - if (msg) - lua_pushfstring(L, "%s\n", msg); - luaL_checkstack(L, 10, NULL); - lua_pushliteral(L, "stack traceback:"); - while (lua_getstack(L1, level++, &ar)) { - if (n1-- == 0) { /* too many levels? */ - lua_pushliteral(L, "\n\t..."); /* add a '...' */ - level = last - LEVELS2 + 1; /* and skip to last ones */ - } - else { - lua_getinfo(L1, "Slnt", &ar); - lua_pushfstring(L, "\n\t%s:", ar.short_src); - if (ar.currentline > 0) - lua_pushfstring(L, "%d:", ar.currentline); - lua_pushliteral(L, " in "); - pushfuncname(L, &ar); - if (ar.istailcall) - lua_pushliteral(L, "\n\t(...tail calls...)"); - lua_concat(L, lua_gettop(L) - top); - } - } - lua_concat(L, lua_gettop(L) - top); -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Error-report functions -** ======================================================= -*/ - -LUALIB_API int luaL_argerror (lua_State *L, int arg, const char *extramsg) { - lua_Debug ar; - if (!lua_getstack(L, 0, &ar)) /* no stack frame? */ - return luaL_error(L, "bad argument #%d (%s)", arg, extramsg); - lua_getinfo(L, "n", &ar); - if (strcmp(ar.namewhat, "method") == 0) { - arg--; /* do not count 'self' */ - if (arg == 0) /* error is in the self argument itself? */ - return luaL_error(L, "calling '%s' on bad self (%s)", - ar.name, extramsg); - } - if (ar.name == NULL) - ar.name = (pushglobalfuncname(L, &ar)) ? lua_tostring(L, -1) : "?"; - return luaL_error(L, "bad argument #%d to '%s' (%s)", - arg, ar.name, extramsg); -} - - -static int typeerror (lua_State *L, int arg, const char *tname) { - const char *msg; - const char *typearg; /* name for the type of the actual argument */ - if (luaL_getmetafield(L, arg, "__name") == LUA_TSTRING) - typearg = lua_tostring(L, -1); /* use the given type name */ - else if (lua_type(L, arg) == LUA_TLIGHTUSERDATA) - typearg = "light userdata"; /* special name for messages */ - else - typearg = luaL_typename(L, arg); /* standard name */ - msg = lua_pushfstring(L, "%s expected, got %s", tname, typearg); - return luaL_argerror(L, arg, msg); -} - - -static void tag_error (lua_State *L, int arg, int tag) { - typeerror(L, arg, lua_typename(L, tag)); -} - - -/* -** The use of 'lua_pushfstring' ensures this function does not -** need reserved stack space when called. -*/ -LUALIB_API void luaL_where (lua_State *L, int level) { - lua_Debug ar; - if (lua_getstack(L, level, &ar)) { /* check function at level */ - lua_getinfo(L, "Sl", &ar); /* get info about it */ - if (ar.currentline > 0) { /* is there info? */ - lua_pushfstring(L, "%s:%d: ", ar.short_src, ar.currentline); - return; - } - } - lua_pushfstring(L, ""); /* else, no information available... */ -} - - -/* -** Again, the use of 'lua_pushvfstring' ensures this function does -** not need reserved stack space when called. (At worst, it generates -** an error with "stack overflow" instead of the given message.) -*/ -LUALIB_API int luaL_error (lua_State *L, const char *fmt, ...) { - va_list argp; - va_start(argp, fmt); - luaL_where(L, 1); - lua_pushvfstring(L, fmt, argp); - va_end(argp); - lua_concat(L, 2); - return lua_error(L); -} - - -LUALIB_API int luaL_fileresult (lua_State *L, int stat, const char *fname) { - int en = errno; /* calls to Lua API may change this value */ - if (stat) { - lua_pushboolean(L, 1); - return 1; - } - else { - lua_pushnil(L); - if (fname) - lua_pushfstring(L, "%s: %s", fname, strerror(en)); - else - lua_pushstring(L, strerror(en)); - lua_pushinteger(L, en); - return 3; - } -} - - -#if !defined(l_inspectstat) /* { */ - -#if defined(LUA_USE_POSIX) - -#include - -/* -** use appropriate macros to interpret 'pclose' return status -*/ -#define l_inspectstat(stat,what) \ - if (WIFEXITED(stat)) { stat = WEXITSTATUS(stat); } \ - else if (WIFSIGNALED(stat)) { stat = WTERMSIG(stat); what = "signal"; } - -#else - -#define l_inspectstat(stat,what) /* no op */ - -#endif - -#endif /* } */ - - -LUALIB_API int luaL_execresult (lua_State *L, int stat) { - const char *what = "exit"; /* type of termination */ - if (stat == -1) /* error? */ - return luaL_fileresult(L, 0, NULL); - else { - l_inspectstat(stat, what); /* interpret result */ - if (*what == 'e' && stat == 0) /* successful termination? */ - lua_pushboolean(L, 1); - else - lua_pushnil(L); - lua_pushstring(L, what); - lua_pushinteger(L, stat); - return 3; /* return true/nil,what,code */ - } -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Userdata's metatable manipulation -** ======================================================= -*/ - -LUALIB_API int luaL_newmetatable (lua_State *L, const char *tname) { - if (luaL_getmetatable(L, tname) != LUA_TNIL) /* name already in use? */ - return 0; /* leave previous value on top, but return 0 */ - lua_pop(L, 1); - lua_createtable(L, 0, 2); /* create metatable */ - lua_pushstring(L, tname); - lua_setfield(L, -2, "__name"); /* metatable.__name = tname */ - lua_pushvalue(L, -1); - lua_setfield(L, LUA_REGISTRYINDEX, tname); /* registry.name = metatable */ - return 1; -} - - -LUALIB_API void luaL_setmetatable (lua_State *L, const char *tname) { - luaL_getmetatable(L, tname); - lua_setmetatable(L, -2); -} - - -LUALIB_API void *luaL_testudata (lua_State *L, int ud, const char *tname) { - void *p = lua_touserdata(L, ud); - if (p != NULL) { /* value is a userdata? */ - if (lua_getmetatable(L, ud)) { /* does it have a metatable? */ - luaL_getmetatable(L, tname); /* get correct metatable */ - if (!lua_rawequal(L, -1, -2)) /* not the same? */ - p = NULL; /* value is a userdata with wrong metatable */ - lua_pop(L, 2); /* remove both metatables */ - return p; - } - } - return NULL; /* value is not a userdata with a metatable */ -} - - -LUALIB_API void *luaL_checkudata (lua_State *L, int ud, const char *tname) { - void *p = luaL_testudata(L, ud, tname); - if (p == NULL) typeerror(L, ud, tname); - return p; -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Argument check functions -** ======================================================= -*/ - -LUALIB_API int luaL_checkoption (lua_State *L, int arg, const char *def, - const char *const lst[]) { - const char *name = (def) ? luaL_optstring(L, arg, def) : - luaL_checkstring(L, arg); - int i; - for (i=0; lst[i]; i++) - if (strcmp(lst[i], name) == 0) - return i; - return luaL_argerror(L, arg, - lua_pushfstring(L, "invalid option '%s'", name)); -} - - -/* -** Ensures the stack has at least 'space' extra slots, raising an error -** if it cannot fulfill the request. (The error handling needs a few -** extra slots to format the error message. In case of an error without -** this extra space, Lua will generate the same 'stack overflow' error, -** but without 'msg'.) -*/ -LUALIB_API void luaL_checkstack (lua_State *L, int space, const char *msg) { - if (!lua_checkstack(L, space)) { - if (msg) - luaL_error(L, "stack overflow (%s)", msg); - else - luaL_error(L, "stack overflow"); - } -} - - -LUALIB_API void luaL_checktype (lua_State *L, int arg, int t) { - if (lua_type(L, arg) != t) - tag_error(L, arg, t); -} - - -LUALIB_API void luaL_checkany (lua_State *L, int arg) { - if (lua_type(L, arg) == LUA_TNONE) - luaL_argerror(L, arg, "value expected"); -} - - -LUALIB_API const char *luaL_checklstring (lua_State *L, int arg, size_t *len) { - const char *s = lua_tolstring(L, arg, len); - if (!s) tag_error(L, arg, LUA_TSTRING); - return s; -} - - -LUALIB_API const char *luaL_optlstring (lua_State *L, int arg, - const char *def, size_t *len) { - if (lua_isnoneornil(L, arg)) { - if (len) - *len = (def ? strlen(def) : 0); - return def; - } - else return luaL_checklstring(L, arg, len); -} - - -LUALIB_API lua_Number luaL_checknumber (lua_State *L, int arg) { - int isnum; - lua_Number d = lua_tonumberx(L, arg, &isnum); - if (!isnum) - tag_error(L, arg, LUA_TNUMBER); - return d; -} - - -LUALIB_API lua_Number luaL_optnumber (lua_State *L, int arg, lua_Number def) { - return luaL_opt(L, luaL_checknumber, arg, def); -} - - -static void interror (lua_State *L, int arg) { - if (lua_isnumber(L, arg)) - luaL_argerror(L, arg, "number has no integer representation"); - else - tag_error(L, arg, LUA_TNUMBER); -} - - -LUALIB_API lua_Integer luaL_checkinteger (lua_State *L, int arg) { - int isnum; - lua_Integer d = lua_tointegerx(L, arg, &isnum); - if (!isnum) { - interror(L, arg); - } - return d; -} - - -LUALIB_API lua_Integer luaL_optinteger (lua_State *L, int arg, - lua_Integer def) { - return luaL_opt(L, luaL_checkinteger, arg, def); -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Generic Buffer manipulation -** ======================================================= -*/ - -/* userdata to box arbitrary data */ -typedef struct UBox { - void *box; - size_t bsize; -} UBox; - - -static void *resizebox (lua_State *L, int idx, size_t newsize) { - void *ud; - lua_Alloc allocf = lua_getallocf(L, &ud); - UBox *box = (UBox *)lua_touserdata(L, idx); - void *temp = allocf(ud, box->box, box->bsize, newsize); - if (temp == NULL && newsize > 0) { /* allocation error? */ - resizebox(L, idx, 0); /* free buffer */ - luaL_error(L, "not enough memory for buffer allocation"); - } - box->box = temp; - box->bsize = newsize; - return temp; -} - - -static int boxgc (lua_State *L) { - resizebox(L, 1, 0); - return 0; -} - - -static void *newbox (lua_State *L, size_t newsize) { - UBox *box = (UBox *)lua_newuserdata(L, sizeof(UBox)); - box->box = NULL; - box->bsize = 0; - if (luaL_newmetatable(L, "LUABOX")) { /* creating metatable? */ - lua_pushcfunction(L, boxgc); - lua_setfield(L, -2, "__gc"); /* metatable.__gc = boxgc */ - } - lua_setmetatable(L, -2); - return resizebox(L, -1, newsize); -} - - -/* -** check whether buffer is using a userdata on the stack as a temporary -** buffer -*/ -#define buffonstack(B) ((B)->b != (B)->initb) - - -/* -** returns a pointer to a free area with at least 'sz' bytes -*/ -LUALIB_API char *luaL_prepbuffsize (luaL_Buffer *B, size_t sz) { - lua_State *L = B->L; - if (B->size - B->n < sz) { /* not enough space? */ - char *newbuff; - size_t newsize = B->size * 2; /* double buffer size */ - if (newsize - B->n < sz) /* not big enough? */ - newsize = B->n + sz; - if (newsize < B->n || newsize - B->n < sz) - luaL_error(L, "buffer too large"); - /* create larger buffer */ - if (buffonstack(B)) - newbuff = (char *)resizebox(L, -1, newsize); - else { /* no buffer yet */ - newbuff = (char *)newbox(L, newsize); - memcpy(newbuff, B->b, B->n * sizeof(char)); /* copy original content */ - } - B->b = newbuff; - B->size = newsize; - } - return &B->b[B->n]; -} - - -LUALIB_API void luaL_addlstring (luaL_Buffer *B, const char *s, size_t l) { - if (l > 0) { /* avoid 'memcpy' when 's' can be NULL */ - char *b = luaL_prepbuffsize(B, l); - memcpy(b, s, l * sizeof(char)); - luaL_addsize(B, l); - } -} - - -LUALIB_API void luaL_addstring (luaL_Buffer *B, const char *s) { - luaL_addlstring(B, s, strlen(s)); -} - - -LUALIB_API void luaL_pushresult (luaL_Buffer *B) { - lua_State *L = B->L; - lua_pushlstring(L, B->b, B->n); - if (buffonstack(B)) { - resizebox(L, -2, 0); /* delete old buffer */ - lua_remove(L, -2); /* remove its header from the stack */ - } -} - - -LUALIB_API void luaL_pushresultsize (luaL_Buffer *B, size_t sz) { - luaL_addsize(B, sz); - luaL_pushresult(B); -} - - -LUALIB_API void luaL_addvalue (luaL_Buffer *B) { - lua_State *L = B->L; - size_t l; - const char *s = lua_tolstring(L, -1, &l); - if (buffonstack(B)) - lua_insert(L, -2); /* put value below buffer */ - luaL_addlstring(B, s, l); - lua_remove(L, (buffonstack(B)) ? -2 : -1); /* remove value */ -} - - -LUALIB_API void luaL_buffinit (lua_State *L, luaL_Buffer *B) { - B->L = L; - B->b = B->initb; - B->n = 0; - B->size = LUAL_BUFFERSIZE; -} - - -LUALIB_API char *luaL_buffinitsize (lua_State *L, luaL_Buffer *B, size_t sz) { - luaL_buffinit(L, B); - return luaL_prepbuffsize(B, sz); -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Reference system -** ======================================================= -*/ - -/* index of free-list header */ -#define freelist 0 - - -LUALIB_API int luaL_ref (lua_State *L, int t) { - int ref; - if (lua_isnil(L, -1)) { - lua_pop(L, 1); /* remove from stack */ - return LUA_REFNIL; /* 'nil' has a unique fixed reference */ - } - t = lua_absindex(L, t); - lua_rawgeti(L, t, freelist); /* get first free element */ - ref = (int)lua_tointeger(L, -1); /* ref = t[freelist] */ - lua_pop(L, 1); /* remove it from stack */ - if (ref != 0) { /* any free element? */ - lua_rawgeti(L, t, ref); /* remove it from list */ - lua_rawseti(L, t, freelist); /* (t[freelist] = t[ref]) */ - } - else /* no free elements */ - ref = (int)lua_rawlen(L, t) + 1; /* get a new reference */ - lua_rawseti(L, t, ref); - return ref; -} - - -LUALIB_API void luaL_unref (lua_State *L, int t, int ref) { - if (ref >= 0) { - t = lua_absindex(L, t); - lua_rawgeti(L, t, freelist); - lua_rawseti(L, t, ref); /* t[ref] = t[freelist] */ - lua_pushinteger(L, ref); - lua_rawseti(L, t, freelist); /* t[freelist] = ref */ - } -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Load functions -** ======================================================= -*/ - -typedef struct LoadF { - int n; /* number of pre-read characters */ - FILE *f; /* file being read */ - char buff[BUFSIZ]; /* area for reading file */ -} LoadF; - - -static const char *getF (lua_State *L, void *ud, size_t *size) { - LoadF *lf = (LoadF *)ud; - (void)L; /* not used */ - if (lf->n > 0) { /* are there pre-read characters to be read? */ - *size = lf->n; /* return them (chars already in buffer) */ - lf->n = 0; /* no more pre-read characters */ - } - else { /* read a block from file */ - /* 'fread' can return > 0 *and* set the EOF flag. If next call to - 'getF' called 'fread', it might still wait for user input. - The next check avoids this problem. */ - if (feof(lf->f)) return NULL; - *size = fread(lf->buff, 1, sizeof(lf->buff), lf->f); /* read block */ - } - return lf->buff; -} - - -static int errfile (lua_State *L, const char *what, int fnameindex) { - const char *serr = strerror(errno); - const char *filename = lua_tostring(L, fnameindex) + 1; - lua_pushfstring(L, "cannot %s %s: %s", what, filename, serr); - lua_remove(L, fnameindex); - return LUA_ERRFILE; -} - - -static int skipBOM (LoadF *lf) { - const char *p = "\xEF\xBB\xBF"; /* UTF-8 BOM mark */ - int c; - lf->n = 0; - do { - c = getc(lf->f); - if (c == EOF || c != *(const unsigned char *)p++) return c; - lf->buff[lf->n++] = c; /* to be read by the parser */ - } while (*p != '\0'); - lf->n = 0; /* prefix matched; discard it */ - return getc(lf->f); /* return next character */ -} - - -/* -** reads the first character of file 'f' and skips an optional BOM mark -** in its beginning plus its first line if it starts with '#'. Returns -** true if it skipped the first line. In any case, '*cp' has the -** first "valid" character of the file (after the optional BOM and -** a first-line comment). -*/ -static int skipcomment (LoadF *lf, int *cp) { - int c = *cp = skipBOM(lf); - if (c == '#') { /* first line is a comment (Unix exec. file)? */ - do { /* skip first line */ - c = getc(lf->f); - } while (c != EOF && c != '\n'); - *cp = getc(lf->f); /* skip end-of-line, if present */ - return 1; /* there was a comment */ - } - else return 0; /* no comment */ -} - - -LUALIB_API int luaL_loadfilex (lua_State *L, const char *filename, - const char *mode) { - LoadF lf; - int status, readstatus; - int c; - int fnameindex = lua_gettop(L) + 1; /* index of filename on the stack */ - if (filename == NULL) { - lua_pushliteral(L, "=stdin"); - lf.f = stdin; - } - else { - lua_pushfstring(L, "@%s", filename); - lf.f = fopen(filename, "r"); - if (lf.f == NULL) return errfile(L, "open", fnameindex); - } - if (skipcomment(&lf, &c)) /* read initial portion */ - lf.buff[lf.n++] = '\n'; /* add line to correct line numbers */ - if (c == LUA_SIGNATURE[0] && filename) { /* binary file? */ - lf.f = freopen(filename, "rb", lf.f); /* reopen in binary mode */ - if (lf.f == NULL) return errfile(L, "reopen", fnameindex); - skipcomment(&lf, &c); /* re-read initial portion */ - } - if (c != EOF) - lf.buff[lf.n++] = c; /* 'c' is the first character of the stream */ - status = lua_load(L, getF, &lf, lua_tostring(L, -1), mode); - readstatus = ferror(lf.f); - if (filename) fclose(lf.f); /* close file (even in case of errors) */ - if (readstatus) { - lua_settop(L, fnameindex); /* ignore results from 'lua_load' */ - return errfile(L, "read", fnameindex); - } - lua_remove(L, fnameindex); - return status; -} - - -typedef struct LoadS { - const char *s; - size_t size; -} LoadS; - - -static const char *getS (lua_State *L, void *ud, size_t *size) { - LoadS *ls = (LoadS *)ud; - (void)L; /* not used */ - if (ls->size == 0) return NULL; - *size = ls->size; - ls->size = 0; - return ls->s; -} - - -LUALIB_API int luaL_loadbufferx (lua_State *L, const char *buff, size_t size, - const char *name, const char *mode) { - LoadS ls; - ls.s = buff; - ls.size = size; - return lua_load(L, getS, &ls, name, mode); -} - - -LUALIB_API int luaL_loadstring (lua_State *L, const char *s) { - return luaL_loadbuffer(L, s, strlen(s), s); -} - -/* }====================================================== */ - - - -LUALIB_API int luaL_getmetafield (lua_State *L, int obj, const char *event) { - if (!lua_getmetatable(L, obj)) /* no metatable? */ - return LUA_TNIL; - else { - int tt; - lua_pushstring(L, event); - tt = lua_rawget(L, -2); - if (tt == LUA_TNIL) /* is metafield nil? */ - lua_pop(L, 2); /* remove metatable and metafield */ - else - lua_remove(L, -2); /* remove only metatable */ - return tt; /* return metafield type */ - } -} - - -LUALIB_API int luaL_callmeta (lua_State *L, int obj, const char *event) { - obj = lua_absindex(L, obj); - if (luaL_getmetafield(L, obj, event) == LUA_TNIL) /* no metafield? */ - return 0; - lua_pushvalue(L, obj); - lua_call(L, 1, 1); - return 1; -} - - -LUALIB_API lua_Integer luaL_len (lua_State *L, int idx) { - lua_Integer l; - int isnum; - lua_len(L, idx); - l = lua_tointegerx(L, -1, &isnum); - if (!isnum) - luaL_error(L, "object length is not an integer"); - lua_pop(L, 1); /* remove object */ - return l; -} - - -LUALIB_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len) { - if (luaL_callmeta(L, idx, "__tostring")) { /* metafield? */ - if (!lua_isstring(L, -1)) - luaL_error(L, "'__tostring' must return a string"); - } - else { - switch (lua_type(L, idx)) { - case LUA_TNUMBER: { - if (lua_isinteger(L, idx)) - lua_pushfstring(L, "%I", (LUAI_UACINT)lua_tointeger(L, idx)); - else - lua_pushfstring(L, "%f", (LUAI_UACNUMBER)lua_tonumber(L, idx)); - break; - } - case LUA_TSTRING: - lua_pushvalue(L, idx); - break; - case LUA_TBOOLEAN: - lua_pushstring(L, (lua_toboolean(L, idx) ? "true" : "false")); - break; - case LUA_TNIL: - lua_pushliteral(L, "nil"); - break; - default: { - int tt = luaL_getmetafield(L, idx, "__name"); /* try name */ - const char *kind = (tt == LUA_TSTRING) ? lua_tostring(L, -1) : - luaL_typename(L, idx); - lua_pushfstring(L, "%s: %p", kind, lua_topointer(L, idx)); - if (tt != LUA_TNIL) - lua_remove(L, -2); /* remove '__name' */ - break; - } - } - } - return lua_tolstring(L, -1, len); -} - - -/* -** {====================================================== -** Compatibility with 5.1 module functions -** ======================================================= -*/ -#if defined(LUA_COMPAT_MODULE) - -static const char *luaL_findtable (lua_State *L, int idx, - const char *fname, int szhint) { - const char *e; - if (idx) lua_pushvalue(L, idx); - do { - e = strchr(fname, '.'); - if (e == NULL) e = fname + strlen(fname); - lua_pushlstring(L, fname, e - fname); - if (lua_rawget(L, -2) == LUA_TNIL) { /* no such field? */ - lua_pop(L, 1); /* remove this nil */ - lua_createtable(L, 0, (*e == '.' ? 1 : szhint)); /* new table for field */ - lua_pushlstring(L, fname, e - fname); - lua_pushvalue(L, -2); - lua_settable(L, -4); /* set new table into field */ - } - else if (!lua_istable(L, -1)) { /* field has a non-table value? */ - lua_pop(L, 2); /* remove table and value */ - return fname; /* return problematic part of the name */ - } - lua_remove(L, -2); /* remove previous table */ - fname = e + 1; - } while (*e == '.'); - return NULL; -} - - -/* -** Count number of elements in a luaL_Reg list. -*/ -static int libsize (const luaL_Reg *l) { - int size = 0; - for (; l && l->name; l++) size++; - return size; -} - - -/* -** Find or create a module table with a given name. The function -** first looks at the LOADED table and, if that fails, try a -** global variable with that name. In any case, leaves on the stack -** the module table. -*/ -LUALIB_API void luaL_pushmodule (lua_State *L, const char *modname, - int sizehint) { - luaL_findtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE, 1); - if (lua_getfield(L, -1, modname) != LUA_TTABLE) { /* no LOADED[modname]? */ - lua_pop(L, 1); /* remove previous result */ - /* try global variable (and create one if it does not exist) */ - lua_pushglobaltable(L); - if (luaL_findtable(L, 0, modname, sizehint) != NULL) - luaL_error(L, "name conflict for module '%s'", modname); - lua_pushvalue(L, -1); - lua_setfield(L, -3, modname); /* LOADED[modname] = new table */ - } - lua_remove(L, -2); /* remove LOADED table */ -} - - -LUALIB_API void luaL_openlib (lua_State *L, const char *libname, - const luaL_Reg *l, int nup) { - luaL_checkversion(L); - if (libname) { - luaL_pushmodule(L, libname, libsize(l)); /* get/create library table */ - lua_insert(L, -(nup + 1)); /* move library table to below upvalues */ - } - if (l) - luaL_setfuncs(L, l, nup); - else - lua_pop(L, nup); /* remove upvalues */ -} - -#endif -/* }====================================================== */ - -/* -** set functions from list 'l' into table at top - 'nup'; each -** function gets the 'nup' elements at the top as upvalues. -** Returns with only the table at the stack. -*/ -LUALIB_API void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup) { - luaL_checkstack(L, nup, "too many upvalues"); - for (; l->name != NULL; l++) { /* fill the table with given functions */ - int i; - for (i = 0; i < nup; i++) /* copy upvalues to the top */ - lua_pushvalue(L, -nup); - lua_pushcclosure(L, l->func, nup); /* closure with those upvalues */ - lua_setfield(L, -(nup + 2), l->name); - } - lua_pop(L, nup); /* remove upvalues */ -} - - -/* -** ensure that stack[idx][fname] has a table and push that table -** into the stack -*/ -LUALIB_API int luaL_getsubtable (lua_State *L, int idx, const char *fname) { - if (lua_getfield(L, idx, fname) == LUA_TTABLE) - return 1; /* table already there */ - else { - lua_pop(L, 1); /* remove previous result */ - idx = lua_absindex(L, idx); - lua_newtable(L); - lua_pushvalue(L, -1); /* copy to be left at top */ - lua_setfield(L, idx, fname); /* assign new table to field */ - return 0; /* false, because did not find table there */ - } -} - - -/* -** Stripped-down 'require': After checking "loaded" table, calls 'openf' -** to open a module, registers the result in 'package.loaded' table and, -** if 'glb' is true, also registers the result in the global table. -** Leaves resulting module on the top. -*/ -LUALIB_API void luaL_requiref (lua_State *L, const char *modname, - lua_CFunction openf, int glb) { - luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE); - lua_getfield(L, -1, modname); /* LOADED[modname] */ - if (!lua_toboolean(L, -1)) { /* package not already loaded? */ - lua_pop(L, 1); /* remove field */ - lua_pushcfunction(L, openf); - lua_pushstring(L, modname); /* argument to open function */ - lua_call(L, 1, 1); /* call 'openf' to open module */ - lua_pushvalue(L, -1); /* make copy of module (call result) */ - lua_setfield(L, -3, modname); /* LOADED[modname] = module */ - } - lua_remove(L, -2); /* remove LOADED table */ - if (glb) { - lua_pushvalue(L, -1); /* copy of module */ - lua_setglobal(L, modname); /* _G[modname] = module */ - } -} - - -LUALIB_API const char *luaL_gsub (lua_State *L, const char *s, const char *p, - const char *r) { - const char *wild; - size_t l = strlen(p); - luaL_Buffer b; - luaL_buffinit(L, &b); - while ((wild = strstr(s, p)) != NULL) { - luaL_addlstring(&b, s, wild - s); /* push prefix */ - luaL_addstring(&b, r); /* push replacement in place of pattern */ - s = wild + l; /* continue after 'p' */ - } - luaL_addstring(&b, s); /* push last suffix */ - luaL_pushresult(&b); - return lua_tostring(L, -1); -} - - -static void *l_alloc (void *ud, void *ptr, size_t osize, size_t nsize) { - (void)ud; (void)osize; /* not used */ - if (nsize == 0) { - free(ptr); - return NULL; - } - else - return realloc(ptr, nsize); -} - - -static int panic (lua_State *L) { - lua_writestringerror("PANIC: unprotected error in call to Lua API (%s)\n", - lua_tostring(L, -1)); - return 0; /* return to Lua to abort */ -} - - -LUALIB_API lua_State *luaL_newstate (void) { - lua_State *L = lua_newstate(l_alloc, NULL); - if (L) lua_atpanic(L, &panic); - return L; -} - - -LUALIB_API void luaL_checkversion_ (lua_State *L, lua_Number ver, size_t sz) { - const lua_Number *v = lua_version(L); - if (sz != LUAL_NUMSIZES) /* check numeric types */ - luaL_error(L, "core and library have incompatible numeric types"); - if (v != lua_version(NULL)) - luaL_error(L, "multiple Lua VMs detected"); - else if (*v != ver) - luaL_error(L, "version mismatch: app. needs %f, Lua core provides %f", - (LUAI_UACNUMBER)ver, (LUAI_UACNUMBER)*v); -} - diff --git a/deps/rcheevos/test/lua/src/lauxlib.h b/deps/rcheevos/test/lua/src/lauxlib.h deleted file mode 100644 index 9a2e66aa06..0000000000 --- a/deps/rcheevos/test/lua/src/lauxlib.h +++ /dev/null @@ -1,264 +0,0 @@ -/* -** $Id: lauxlib.h,v 1.131 2016/12/06 14:54:31 roberto Exp $ -** Auxiliary functions for building Lua libraries -** See Copyright Notice in lua.h -*/ - - -#ifndef lauxlib_h -#define lauxlib_h - - -#include -#include - -#include "lua.h" - - - -/* extra error code for 'luaL_loadfilex' */ -#define LUA_ERRFILE (LUA_ERRERR+1) - - -/* key, in the registry, for table of loaded modules */ -#define LUA_LOADED_TABLE "_LOADED" - - -/* key, in the registry, for table of preloaded loaders */ -#define LUA_PRELOAD_TABLE "_PRELOAD" - - -typedef struct luaL_Reg { - const char *name; - lua_CFunction func; -} luaL_Reg; - - -#define LUAL_NUMSIZES (sizeof(lua_Integer)*16 + sizeof(lua_Number)) - -LUALIB_API void (luaL_checkversion_) (lua_State *L, lua_Number ver, size_t sz); -#define luaL_checkversion(L) \ - luaL_checkversion_(L, LUA_VERSION_NUM, LUAL_NUMSIZES) - -LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e); -LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e); -LUALIB_API const char *(luaL_tolstring) (lua_State *L, int idx, size_t *len); -LUALIB_API int (luaL_argerror) (lua_State *L, int arg, const char *extramsg); -LUALIB_API const char *(luaL_checklstring) (lua_State *L, int arg, - size_t *l); -LUALIB_API const char *(luaL_optlstring) (lua_State *L, int arg, - const char *def, size_t *l); -LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int arg); -LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int arg, lua_Number def); - -LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int arg); -LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int arg, - lua_Integer def); - -LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg); -LUALIB_API void (luaL_checktype) (lua_State *L, int arg, int t); -LUALIB_API void (luaL_checkany) (lua_State *L, int arg); - -LUALIB_API int (luaL_newmetatable) (lua_State *L, const char *tname); -LUALIB_API void (luaL_setmetatable) (lua_State *L, const char *tname); -LUALIB_API void *(luaL_testudata) (lua_State *L, int ud, const char *tname); -LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname); - -LUALIB_API void (luaL_where) (lua_State *L, int lvl); -LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...); - -LUALIB_API int (luaL_checkoption) (lua_State *L, int arg, const char *def, - const char *const lst[]); - -LUALIB_API int (luaL_fileresult) (lua_State *L, int stat, const char *fname); -LUALIB_API int (luaL_execresult) (lua_State *L, int stat); - -/* predefined references */ -#define LUA_NOREF (-2) -#define LUA_REFNIL (-1) - -LUALIB_API int (luaL_ref) (lua_State *L, int t); -LUALIB_API void (luaL_unref) (lua_State *L, int t, int ref); - -LUALIB_API int (luaL_loadfilex) (lua_State *L, const char *filename, - const char *mode); - -#define luaL_loadfile(L,f) luaL_loadfilex(L,f,NULL) - -LUALIB_API int (luaL_loadbufferx) (lua_State *L, const char *buff, size_t sz, - const char *name, const char *mode); -LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s); - -LUALIB_API lua_State *(luaL_newstate) (void); - -LUALIB_API lua_Integer (luaL_len) (lua_State *L, int idx); - -LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p, - const char *r); - -LUALIB_API void (luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup); - -LUALIB_API int (luaL_getsubtable) (lua_State *L, int idx, const char *fname); - -LUALIB_API void (luaL_traceback) (lua_State *L, lua_State *L1, - const char *msg, int level); - -LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname, - lua_CFunction openf, int glb); - -/* -** =============================================================== -** some useful macros -** =============================================================== -*/ - - -#define luaL_newlibtable(L,l) \ - lua_createtable(L, 0, sizeof(l)/sizeof((l)[0]) - 1) - -#define luaL_newlib(L,l) \ - (luaL_checkversion(L), luaL_newlibtable(L,l), luaL_setfuncs(L,l,0)) - -#define luaL_argcheck(L, cond,arg,extramsg) \ - ((void)((cond) || luaL_argerror(L, (arg), (extramsg)))) -#define luaL_checkstring(L,n) (luaL_checklstring(L, (n), NULL)) -#define luaL_optstring(L,n,d) (luaL_optlstring(L, (n), (d), NULL)) - -#define luaL_typename(L,i) lua_typename(L, lua_type(L,(i))) - -#define luaL_dofile(L, fn) \ - (luaL_loadfile(L, fn) || lua_pcall(L, 0, LUA_MULTRET, 0)) - -#define luaL_dostring(L, s) \ - (luaL_loadstring(L, s) || lua_pcall(L, 0, LUA_MULTRET, 0)) - -#define luaL_getmetatable(L,n) (lua_getfield(L, LUA_REGISTRYINDEX, (n))) - -#define luaL_opt(L,f,n,d) (lua_isnoneornil(L,(n)) ? (d) : f(L,(n))) - -#define luaL_loadbuffer(L,s,sz,n) luaL_loadbufferx(L,s,sz,n,NULL) - - -/* -** {====================================================== -** Generic Buffer manipulation -** ======================================================= -*/ - -typedef struct luaL_Buffer { - char *b; /* buffer address */ - size_t size; /* buffer size */ - size_t n; /* number of characters in buffer */ - lua_State *L; - char initb[LUAL_BUFFERSIZE]; /* initial buffer */ -} luaL_Buffer; - - -#define luaL_addchar(B,c) \ - ((void)((B)->n < (B)->size || luaL_prepbuffsize((B), 1)), \ - ((B)->b[(B)->n++] = (c))) - -#define luaL_addsize(B,s) ((B)->n += (s)) - -LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B); -LUALIB_API char *(luaL_prepbuffsize) (luaL_Buffer *B, size_t sz); -LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l); -LUALIB_API void (luaL_addstring) (luaL_Buffer *B, const char *s); -LUALIB_API void (luaL_addvalue) (luaL_Buffer *B); -LUALIB_API void (luaL_pushresult) (luaL_Buffer *B); -LUALIB_API void (luaL_pushresultsize) (luaL_Buffer *B, size_t sz); -LUALIB_API char *(luaL_buffinitsize) (lua_State *L, luaL_Buffer *B, size_t sz); - -#define luaL_prepbuffer(B) luaL_prepbuffsize(B, LUAL_BUFFERSIZE) - -/* }====================================================== */ - - - -/* -** {====================================================== -** File handles for IO library -** ======================================================= -*/ - -/* -** A file handle is a userdata with metatable 'LUA_FILEHANDLE' and -** initial structure 'luaL_Stream' (it may contain other fields -** after that initial structure). -*/ - -#define LUA_FILEHANDLE "FILE*" - - -typedef struct luaL_Stream { - FILE *f; /* stream (NULL for incompletely created streams) */ - lua_CFunction closef; /* to close stream (NULL for closed streams) */ -} luaL_Stream; - -/* }====================================================== */ - - - -/* compatibility with old module system */ -#if defined(LUA_COMPAT_MODULE) - -LUALIB_API void (luaL_pushmodule) (lua_State *L, const char *modname, - int sizehint); -LUALIB_API void (luaL_openlib) (lua_State *L, const char *libname, - const luaL_Reg *l, int nup); - -#define luaL_register(L,n,l) (luaL_openlib(L,(n),(l),0)) - -#endif - - -/* -** {================================================================== -** "Abstraction Layer" for basic report of messages and errors -** =================================================================== -*/ - -/* print a string */ -#if !defined(lua_writestring) -#define lua_writestring(s,l) fwrite((s), sizeof(char), (l), stdout) -#endif - -/* print a newline and flush the output */ -#if !defined(lua_writeline) -#define lua_writeline() (lua_writestring("\n", 1), fflush(stdout)) -#endif - -/* print an error message */ -#if !defined(lua_writestringerror) -#define lua_writestringerror(s,p) \ - (fprintf(stderr, (s), (p)), fflush(stderr)) -#endif - -/* }================================================================== */ - - -/* -** {============================================================ -** Compatibility with deprecated conversions -** ============================================================= -*/ -#if defined(LUA_COMPAT_APIINTCASTS) - -#define luaL_checkunsigned(L,a) ((lua_Unsigned)luaL_checkinteger(L,a)) -#define luaL_optunsigned(L,a,d) \ - ((lua_Unsigned)luaL_optinteger(L,a,(lua_Integer)(d))) - -#define luaL_checkint(L,n) ((int)luaL_checkinteger(L, (n))) -#define luaL_optint(L,n,d) ((int)luaL_optinteger(L, (n), (d))) - -#define luaL_checklong(L,n) ((long)luaL_checkinteger(L, (n))) -#define luaL_optlong(L,n,d) ((long)luaL_optinteger(L, (n), (d))) - -#endif -/* }============================================================ */ - - - -#endif - - diff --git a/deps/rcheevos/test/lua/src/lbaselib.c b/deps/rcheevos/test/lua/src/lbaselib.c deleted file mode 100644 index 08523e6e75..0000000000 --- a/deps/rcheevos/test/lua/src/lbaselib.c +++ /dev/null @@ -1,498 +0,0 @@ -/* -** $Id: lbaselib.c,v 1.314 2016/09/05 19:06:34 roberto Exp $ -** Basic library -** See Copyright Notice in lua.h -*/ - -#define lbaselib_c -#define LUA_LIB - -#include "lprefix.h" - - -#include -#include -#include -#include - -#include "lua.h" - -#include "lauxlib.h" -#include "lualib.h" - - -static int luaB_print (lua_State *L) { - int n = lua_gettop(L); /* number of arguments */ - int i; - lua_getglobal(L, "tostring"); - for (i=1; i<=n; i++) { - const char *s; - size_t l; - lua_pushvalue(L, -1); /* function to be called */ - lua_pushvalue(L, i); /* value to print */ - lua_call(L, 1, 1); - s = lua_tolstring(L, -1, &l); /* get result */ - if (s == NULL) - return luaL_error(L, "'tostring' must return a string to 'print'"); - if (i>1) lua_writestring("\t", 1); - lua_writestring(s, l); - lua_pop(L, 1); /* pop result */ - } - lua_writeline(); - return 0; -} - - -#define SPACECHARS " \f\n\r\t\v" - -static const char *b_str2int (const char *s, int base, lua_Integer *pn) { - lua_Unsigned n = 0; - int neg = 0; - s += strspn(s, SPACECHARS); /* skip initial spaces */ - if (*s == '-') { s++; neg = 1; } /* handle signal */ - else if (*s == '+') s++; - if (!isalnum((unsigned char)*s)) /* no digit? */ - return NULL; - do { - int digit = (isdigit((unsigned char)*s)) ? *s - '0' - : (toupper((unsigned char)*s) - 'A') + 10; - if (digit >= base) return NULL; /* invalid numeral */ - n = n * base + digit; - s++; - } while (isalnum((unsigned char)*s)); - s += strspn(s, SPACECHARS); /* skip trailing spaces */ - *pn = (lua_Integer)((neg) ? (0u - n) : n); - return s; -} - - -static int luaB_tonumber (lua_State *L) { - if (lua_isnoneornil(L, 2)) { /* standard conversion? */ - luaL_checkany(L, 1); - if (lua_type(L, 1) == LUA_TNUMBER) { /* already a number? */ - lua_settop(L, 1); /* yes; return it */ - return 1; - } - else { - size_t l; - const char *s = lua_tolstring(L, 1, &l); - if (s != NULL && lua_stringtonumber(L, s) == l + 1) - return 1; /* successful conversion to number */ - /* else not a number */ - } - } - else { - size_t l; - const char *s; - lua_Integer n = 0; /* to avoid warnings */ - lua_Integer base = luaL_checkinteger(L, 2); - luaL_checktype(L, 1, LUA_TSTRING); /* no numbers as strings */ - s = lua_tolstring(L, 1, &l); - luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range"); - if (b_str2int(s, (int)base, &n) == s + l) { - lua_pushinteger(L, n); - return 1; - } /* else not a number */ - } /* else not a number */ - lua_pushnil(L); /* not a number */ - return 1; -} - - -static int luaB_error (lua_State *L) { - int level = (int)luaL_optinteger(L, 2, 1); - lua_settop(L, 1); - if (lua_type(L, 1) == LUA_TSTRING && level > 0) { - luaL_where(L, level); /* add extra information */ - lua_pushvalue(L, 1); - lua_concat(L, 2); - } - return lua_error(L); -} - - -static int luaB_getmetatable (lua_State *L) { - luaL_checkany(L, 1); - if (!lua_getmetatable(L, 1)) { - lua_pushnil(L); - return 1; /* no metatable */ - } - luaL_getmetafield(L, 1, "__metatable"); - return 1; /* returns either __metatable field (if present) or metatable */ -} - - -static int luaB_setmetatable (lua_State *L) { - int t = lua_type(L, 2); - luaL_checktype(L, 1, LUA_TTABLE); - luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2, - "nil or table expected"); - if (luaL_getmetafield(L, 1, "__metatable") != LUA_TNIL) - return luaL_error(L, "cannot change a protected metatable"); - lua_settop(L, 2); - lua_setmetatable(L, 1); - return 1; -} - - -static int luaB_rawequal (lua_State *L) { - luaL_checkany(L, 1); - luaL_checkany(L, 2); - lua_pushboolean(L, lua_rawequal(L, 1, 2)); - return 1; -} - - -static int luaB_rawlen (lua_State *L) { - int t = lua_type(L, 1); - luaL_argcheck(L, t == LUA_TTABLE || t == LUA_TSTRING, 1, - "table or string expected"); - lua_pushinteger(L, lua_rawlen(L, 1)); - return 1; -} - - -static int luaB_rawget (lua_State *L) { - luaL_checktype(L, 1, LUA_TTABLE); - luaL_checkany(L, 2); - lua_settop(L, 2); - lua_rawget(L, 1); - return 1; -} - -static int luaB_rawset (lua_State *L) { - luaL_checktype(L, 1, LUA_TTABLE); - luaL_checkany(L, 2); - luaL_checkany(L, 3); - lua_settop(L, 3); - lua_rawset(L, 1); - return 1; -} - - -static int luaB_collectgarbage (lua_State *L) { - static const char *const opts[] = {"stop", "restart", "collect", - "count", "step", "setpause", "setstepmul", - "isrunning", NULL}; - static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT, - LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL, - LUA_GCISRUNNING}; - int o = optsnum[luaL_checkoption(L, 1, "collect", opts)]; - int ex = (int)luaL_optinteger(L, 2, 0); - int res = lua_gc(L, o, ex); - switch (o) { - case LUA_GCCOUNT: { - int b = lua_gc(L, LUA_GCCOUNTB, 0); - lua_pushnumber(L, (lua_Number)res + ((lua_Number)b/1024)); - return 1; - } - case LUA_GCSTEP: case LUA_GCISRUNNING: { - lua_pushboolean(L, res); - return 1; - } - default: { - lua_pushinteger(L, res); - return 1; - } - } -} - - -static int luaB_type (lua_State *L) { - int t = lua_type(L, 1); - luaL_argcheck(L, t != LUA_TNONE, 1, "value expected"); - lua_pushstring(L, lua_typename(L, t)); - return 1; -} - - -static int pairsmeta (lua_State *L, const char *method, int iszero, - lua_CFunction iter) { - luaL_checkany(L, 1); - if (luaL_getmetafield(L, 1, method) == LUA_TNIL) { /* no metamethod? */ - lua_pushcfunction(L, iter); /* will return generator, */ - lua_pushvalue(L, 1); /* state, */ - if (iszero) lua_pushinteger(L, 0); /* and initial value */ - else lua_pushnil(L); - } - else { - lua_pushvalue(L, 1); /* argument 'self' to metamethod */ - lua_call(L, 1, 3); /* get 3 values from metamethod */ - } - return 3; -} - - -static int luaB_next (lua_State *L) { - luaL_checktype(L, 1, LUA_TTABLE); - lua_settop(L, 2); /* create a 2nd argument if there isn't one */ - if (lua_next(L, 1)) - return 2; - else { - lua_pushnil(L); - return 1; - } -} - - -static int luaB_pairs (lua_State *L) { - return pairsmeta(L, "__pairs", 0, luaB_next); -} - - -/* -** Traversal function for 'ipairs' -*/ -static int ipairsaux (lua_State *L) { - lua_Integer i = luaL_checkinteger(L, 2) + 1; - lua_pushinteger(L, i); - return (lua_geti(L, 1, i) == LUA_TNIL) ? 1 : 2; -} - - -/* -** 'ipairs' function. Returns 'ipairsaux', given "table", 0. -** (The given "table" may not be a table.) -*/ -static int luaB_ipairs (lua_State *L) { -#if defined(LUA_COMPAT_IPAIRS) - return pairsmeta(L, "__ipairs", 1, ipairsaux); -#else - luaL_checkany(L, 1); - lua_pushcfunction(L, ipairsaux); /* iteration function */ - lua_pushvalue(L, 1); /* state */ - lua_pushinteger(L, 0); /* initial value */ - return 3; -#endif -} - - -static int load_aux (lua_State *L, int status, int envidx) { - if (status == LUA_OK) { - if (envidx != 0) { /* 'env' parameter? */ - lua_pushvalue(L, envidx); /* environment for loaded function */ - if (!lua_setupvalue(L, -2, 1)) /* set it as 1st upvalue */ - lua_pop(L, 1); /* remove 'env' if not used by previous call */ - } - return 1; - } - else { /* error (message is on top of the stack) */ - lua_pushnil(L); - lua_insert(L, -2); /* put before error message */ - return 2; /* return nil plus error message */ - } -} - - -static int luaB_loadfile (lua_State *L) { - const char *fname = luaL_optstring(L, 1, NULL); - const char *mode = luaL_optstring(L, 2, NULL); - int env = (!lua_isnone(L, 3) ? 3 : 0); /* 'env' index or 0 if no 'env' */ - int status = luaL_loadfilex(L, fname, mode); - return load_aux(L, status, env); -} - - -/* -** {====================================================== -** Generic Read function -** ======================================================= -*/ - - -/* -** reserved slot, above all arguments, to hold a copy of the returned -** string to avoid it being collected while parsed. 'load' has four -** optional arguments (chunk, source name, mode, and environment). -*/ -#define RESERVEDSLOT 5 - - -/* -** Reader for generic 'load' function: 'lua_load' uses the -** stack for internal stuff, so the reader cannot change the -** stack top. Instead, it keeps its resulting string in a -** reserved slot inside the stack. -*/ -static const char *generic_reader (lua_State *L, void *ud, size_t *size) { - (void)(ud); /* not used */ - luaL_checkstack(L, 2, "too many nested functions"); - lua_pushvalue(L, 1); /* get function */ - lua_call(L, 0, 1); /* call it */ - if (lua_isnil(L, -1)) { - lua_pop(L, 1); /* pop result */ - *size = 0; - return NULL; - } - else if (!lua_isstring(L, -1)) - luaL_error(L, "reader function must return a string"); - lua_replace(L, RESERVEDSLOT); /* save string in reserved slot */ - return lua_tolstring(L, RESERVEDSLOT, size); -} - - -static int luaB_load (lua_State *L) { - int status; - size_t l; - const char *s = lua_tolstring(L, 1, &l); - const char *mode = luaL_optstring(L, 3, "bt"); - int env = (!lua_isnone(L, 4) ? 4 : 0); /* 'env' index or 0 if no 'env' */ - if (s != NULL) { /* loading a string? */ - const char *chunkname = luaL_optstring(L, 2, s); - status = luaL_loadbufferx(L, s, l, chunkname, mode); - } - else { /* loading from a reader function */ - const char *chunkname = luaL_optstring(L, 2, "=(load)"); - luaL_checktype(L, 1, LUA_TFUNCTION); - lua_settop(L, RESERVEDSLOT); /* create reserved slot */ - status = lua_load(L, generic_reader, NULL, chunkname, mode); - } - return load_aux(L, status, env); -} - -/* }====================================================== */ - - -static int dofilecont (lua_State *L, int d1, lua_KContext d2) { - (void)d1; (void)d2; /* only to match 'lua_Kfunction' prototype */ - return lua_gettop(L) - 1; -} - - -static int luaB_dofile (lua_State *L) { - const char *fname = luaL_optstring(L, 1, NULL); - lua_settop(L, 1); - if (luaL_loadfile(L, fname) != LUA_OK) - return lua_error(L); - lua_callk(L, 0, LUA_MULTRET, 0, dofilecont); - return dofilecont(L, 0, 0); -} - - -static int luaB_assert (lua_State *L) { - if (lua_toboolean(L, 1)) /* condition is true? */ - return lua_gettop(L); /* return all arguments */ - else { /* error */ - luaL_checkany(L, 1); /* there must be a condition */ - lua_remove(L, 1); /* remove it */ - lua_pushliteral(L, "assertion failed!"); /* default message */ - lua_settop(L, 1); /* leave only message (default if no other one) */ - return luaB_error(L); /* call 'error' */ - } -} - - -static int luaB_select (lua_State *L) { - int n = lua_gettop(L); - if (lua_type(L, 1) == LUA_TSTRING && *lua_tostring(L, 1) == '#') { - lua_pushinteger(L, n-1); - return 1; - } - else { - lua_Integer i = luaL_checkinteger(L, 1); - if (i < 0) i = n + i; - else if (i > n) i = n; - luaL_argcheck(L, 1 <= i, 1, "index out of range"); - return n - (int)i; - } -} - - -/* -** Continuation function for 'pcall' and 'xpcall'. Both functions -** already pushed a 'true' before doing the call, so in case of success -** 'finishpcall' only has to return everything in the stack minus -** 'extra' values (where 'extra' is exactly the number of items to be -** ignored). -*/ -static int finishpcall (lua_State *L, int status, lua_KContext extra) { - if (status != LUA_OK && status != LUA_YIELD) { /* error? */ - lua_pushboolean(L, 0); /* first result (false) */ - lua_pushvalue(L, -2); /* error message */ - return 2; /* return false, msg */ - } - else - return lua_gettop(L) - (int)extra; /* return all results */ -} - - -static int luaB_pcall (lua_State *L) { - int status; - luaL_checkany(L, 1); - lua_pushboolean(L, 1); /* first result if no errors */ - lua_insert(L, 1); /* put it in place */ - status = lua_pcallk(L, lua_gettop(L) - 2, LUA_MULTRET, 0, 0, finishpcall); - return finishpcall(L, status, 0); -} - - -/* -** Do a protected call with error handling. After 'lua_rotate', the -** stack will have ; so, the function passes -** 2 to 'finishpcall' to skip the 2 first values when returning results. -*/ -static int luaB_xpcall (lua_State *L) { - int status; - int n = lua_gettop(L); - luaL_checktype(L, 2, LUA_TFUNCTION); /* check error function */ - lua_pushboolean(L, 1); /* first result */ - lua_pushvalue(L, 1); /* function */ - lua_rotate(L, 3, 2); /* move them below function's arguments */ - status = lua_pcallk(L, n - 2, LUA_MULTRET, 2, 2, finishpcall); - return finishpcall(L, status, 2); -} - - -static int luaB_tostring (lua_State *L) { - luaL_checkany(L, 1); - luaL_tolstring(L, 1, NULL); - return 1; -} - - -static const luaL_Reg base_funcs[] = { - {"assert", luaB_assert}, - {"collectgarbage", luaB_collectgarbage}, - {"dofile", luaB_dofile}, - {"error", luaB_error}, - {"getmetatable", luaB_getmetatable}, - {"ipairs", luaB_ipairs}, - {"loadfile", luaB_loadfile}, - {"load", luaB_load}, -#if defined(LUA_COMPAT_LOADSTRING) - {"loadstring", luaB_load}, -#endif - {"next", luaB_next}, - {"pairs", luaB_pairs}, - {"pcall", luaB_pcall}, - {"print", luaB_print}, - {"rawequal", luaB_rawequal}, - {"rawlen", luaB_rawlen}, - {"rawget", luaB_rawget}, - {"rawset", luaB_rawset}, - {"select", luaB_select}, - {"setmetatable", luaB_setmetatable}, - {"tonumber", luaB_tonumber}, - {"tostring", luaB_tostring}, - {"type", luaB_type}, - {"xpcall", luaB_xpcall}, - /* placeholders */ - {"_G", NULL}, - {"_VERSION", NULL}, - {NULL, NULL} -}; - - -LUAMOD_API int luaopen_base (lua_State *L) { - /* open lib into global table */ - lua_pushglobaltable(L); - luaL_setfuncs(L, base_funcs, 0); - /* set global _G */ - lua_pushvalue(L, -1); - lua_setfield(L, -2, "_G"); - /* set global _VERSION */ - lua_pushliteral(L, LUA_VERSION); - lua_setfield(L, -2, "_VERSION"); - return 1; -} - diff --git a/deps/rcheevos/test/lua/src/lbitlib.c b/deps/rcheevos/test/lua/src/lbitlib.c deleted file mode 100644 index 1cb1d5b932..0000000000 --- a/deps/rcheevos/test/lua/src/lbitlib.c +++ /dev/null @@ -1,233 +0,0 @@ -/* -** $Id: lbitlib.c,v 1.30 2015/11/11 19:08:09 roberto Exp $ -** Standard library for bitwise operations -** See Copyright Notice in lua.h -*/ - -#define lbitlib_c -#define LUA_LIB - -#include "lprefix.h" - - -#include "lua.h" - -#include "lauxlib.h" -#include "lualib.h" - - -#if defined(LUA_COMPAT_BITLIB) /* { */ - - -#define pushunsigned(L,n) lua_pushinteger(L, (lua_Integer)(n)) -#define checkunsigned(L,i) ((lua_Unsigned)luaL_checkinteger(L,i)) - - -/* number of bits to consider in a number */ -#if !defined(LUA_NBITS) -#define LUA_NBITS 32 -#endif - - -/* -** a lua_Unsigned with its first LUA_NBITS bits equal to 1. (Shift must -** be made in two parts to avoid problems when LUA_NBITS is equal to the -** number of bits in a lua_Unsigned.) -*/ -#define ALLONES (~(((~(lua_Unsigned)0) << (LUA_NBITS - 1)) << 1)) - - -/* macro to trim extra bits */ -#define trim(x) ((x) & ALLONES) - - -/* builds a number with 'n' ones (1 <= n <= LUA_NBITS) */ -#define mask(n) (~((ALLONES << 1) << ((n) - 1))) - - - -static lua_Unsigned andaux (lua_State *L) { - int i, n = lua_gettop(L); - lua_Unsigned r = ~(lua_Unsigned)0; - for (i = 1; i <= n; i++) - r &= checkunsigned(L, i); - return trim(r); -} - - -static int b_and (lua_State *L) { - lua_Unsigned r = andaux(L); - pushunsigned(L, r); - return 1; -} - - -static int b_test (lua_State *L) { - lua_Unsigned r = andaux(L); - lua_pushboolean(L, r != 0); - return 1; -} - - -static int b_or (lua_State *L) { - int i, n = lua_gettop(L); - lua_Unsigned r = 0; - for (i = 1; i <= n; i++) - r |= checkunsigned(L, i); - pushunsigned(L, trim(r)); - return 1; -} - - -static int b_xor (lua_State *L) { - int i, n = lua_gettop(L); - lua_Unsigned r = 0; - for (i = 1; i <= n; i++) - r ^= checkunsigned(L, i); - pushunsigned(L, trim(r)); - return 1; -} - - -static int b_not (lua_State *L) { - lua_Unsigned r = ~checkunsigned(L, 1); - pushunsigned(L, trim(r)); - return 1; -} - - -static int b_shift (lua_State *L, lua_Unsigned r, lua_Integer i) { - if (i < 0) { /* shift right? */ - i = -i; - r = trim(r); - if (i >= LUA_NBITS) r = 0; - else r >>= i; - } - else { /* shift left */ - if (i >= LUA_NBITS) r = 0; - else r <<= i; - r = trim(r); - } - pushunsigned(L, r); - return 1; -} - - -static int b_lshift (lua_State *L) { - return b_shift(L, checkunsigned(L, 1), luaL_checkinteger(L, 2)); -} - - -static int b_rshift (lua_State *L) { - return b_shift(L, checkunsigned(L, 1), -luaL_checkinteger(L, 2)); -} - - -static int b_arshift (lua_State *L) { - lua_Unsigned r = checkunsigned(L, 1); - lua_Integer i = luaL_checkinteger(L, 2); - if (i < 0 || !(r & ((lua_Unsigned)1 << (LUA_NBITS - 1)))) - return b_shift(L, r, -i); - else { /* arithmetic shift for 'negative' number */ - if (i >= LUA_NBITS) r = ALLONES; - else - r = trim((r >> i) | ~(trim(~(lua_Unsigned)0) >> i)); /* add signal bit */ - pushunsigned(L, r); - return 1; - } -} - - -static int b_rot (lua_State *L, lua_Integer d) { - lua_Unsigned r = checkunsigned(L, 1); - int i = d & (LUA_NBITS - 1); /* i = d % NBITS */ - r = trim(r); - if (i != 0) /* avoid undefined shift of LUA_NBITS when i == 0 */ - r = (r << i) | (r >> (LUA_NBITS - i)); - pushunsigned(L, trim(r)); - return 1; -} - - -static int b_lrot (lua_State *L) { - return b_rot(L, luaL_checkinteger(L, 2)); -} - - -static int b_rrot (lua_State *L) { - return b_rot(L, -luaL_checkinteger(L, 2)); -} - - -/* -** get field and width arguments for field-manipulation functions, -** checking whether they are valid. -** ('luaL_error' called without 'return' to avoid later warnings about -** 'width' being used uninitialized.) -*/ -static int fieldargs (lua_State *L, int farg, int *width) { - lua_Integer f = luaL_checkinteger(L, farg); - lua_Integer w = luaL_optinteger(L, farg + 1, 1); - luaL_argcheck(L, 0 <= f, farg, "field cannot be negative"); - luaL_argcheck(L, 0 < w, farg + 1, "width must be positive"); - if (f + w > LUA_NBITS) - luaL_error(L, "trying to access non-existent bits"); - *width = (int)w; - return (int)f; -} - - -static int b_extract (lua_State *L) { - int w; - lua_Unsigned r = trim(checkunsigned(L, 1)); - int f = fieldargs(L, 2, &w); - r = (r >> f) & mask(w); - pushunsigned(L, r); - return 1; -} - - -static int b_replace (lua_State *L) { - int w; - lua_Unsigned r = trim(checkunsigned(L, 1)); - lua_Unsigned v = trim(checkunsigned(L, 2)); - int f = fieldargs(L, 3, &w); - lua_Unsigned m = mask(w); - r = (r & ~(m << f)) | ((v & m) << f); - pushunsigned(L, r); - return 1; -} - - -static const luaL_Reg bitlib[] = { - {"arshift", b_arshift}, - {"band", b_and}, - {"bnot", b_not}, - {"bor", b_or}, - {"bxor", b_xor}, - {"btest", b_test}, - {"extract", b_extract}, - {"lrotate", b_lrot}, - {"lshift", b_lshift}, - {"replace", b_replace}, - {"rrotate", b_rrot}, - {"rshift", b_rshift}, - {NULL, NULL} -}; - - - -LUAMOD_API int luaopen_bit32 (lua_State *L) { - luaL_newlib(L, bitlib); - return 1; -} - - -#else /* }{ */ - - -LUAMOD_API int luaopen_bit32 (lua_State *L) { - return luaL_error(L, "library 'bit32' has been deprecated"); -} - -#endif /* } */ diff --git a/deps/rcheevos/test/lua/src/lcode.c b/deps/rcheevos/test/lua/src/lcode.c deleted file mode 100644 index 0bb414262e..0000000000 --- a/deps/rcheevos/test/lua/src/lcode.c +++ /dev/null @@ -1,1203 +0,0 @@ -/* -** $Id: lcode.c,v 2.112 2016/12/22 13:08:50 roberto Exp $ -** Code generator for Lua -** See Copyright Notice in lua.h -*/ - -#define lcode_c -#define LUA_CORE - -#include "lprefix.h" - - -#include -#include - -#include "lua.h" - -#include "lcode.h" -#include "ldebug.h" -#include "ldo.h" -#include "lgc.h" -#include "llex.h" -#include "lmem.h" -#include "lobject.h" -#include "lopcodes.h" -#include "lparser.h" -#include "lstring.h" -#include "ltable.h" -#include "lvm.h" - - -/* Maximum number of registers in a Lua function (must fit in 8 bits) */ -#define MAXREGS 255 - - -#define hasjumps(e) ((e)->t != (e)->f) - - -/* -** If expression is a numeric constant, fills 'v' with its value -** and returns 1. Otherwise, returns 0. -*/ -static int tonumeral(const expdesc *e, TValue *v) { - if (hasjumps(e)) - return 0; /* not a numeral */ - switch (e->k) { - case VKINT: - if (v) setivalue(v, e->u.ival); - return 1; - case VKFLT: - if (v) setfltvalue(v, e->u.nval); - return 1; - default: return 0; - } -} - - -/* -** Create a OP_LOADNIL instruction, but try to optimize: if the previous -** instruction is also OP_LOADNIL and ranges are compatible, adjust -** range of previous instruction instead of emitting a new one. (For -** instance, 'local a; local b' will generate a single opcode.) -*/ -void luaK_nil (FuncState *fs, int from, int n) { - Instruction *previous; - int l = from + n - 1; /* last register to set nil */ - if (fs->pc > fs->lasttarget) { /* no jumps to current position? */ - previous = &fs->f->code[fs->pc-1]; - if (GET_OPCODE(*previous) == OP_LOADNIL) { /* previous is LOADNIL? */ - int pfrom = GETARG_A(*previous); /* get previous range */ - int pl = pfrom + GETARG_B(*previous); - if ((pfrom <= from && from <= pl + 1) || - (from <= pfrom && pfrom <= l + 1)) { /* can connect both? */ - if (pfrom < from) from = pfrom; /* from = min(from, pfrom) */ - if (pl > l) l = pl; /* l = max(l, pl) */ - SETARG_A(*previous, from); - SETARG_B(*previous, l - from); - return; - } - } /* else go through */ - } - luaK_codeABC(fs, OP_LOADNIL, from, n - 1, 0); /* else no optimization */ -} - - -/* -** Gets the destination address of a jump instruction. Used to traverse -** a list of jumps. -*/ -static int getjump (FuncState *fs, int pc) { - int offset = GETARG_sBx(fs->f->code[pc]); - if (offset == NO_JUMP) /* point to itself represents end of list */ - return NO_JUMP; /* end of list */ - else - return (pc+1)+offset; /* turn offset into absolute position */ -} - - -/* -** Fix jump instruction at position 'pc' to jump to 'dest'. -** (Jump addresses are relative in Lua) -*/ -static void fixjump (FuncState *fs, int pc, int dest) { - Instruction *jmp = &fs->f->code[pc]; - int offset = dest - (pc + 1); - lua_assert(dest != NO_JUMP); - if (abs(offset) > MAXARG_sBx) - luaX_syntaxerror(fs->ls, "control structure too long"); - SETARG_sBx(*jmp, offset); -} - - -/* -** Concatenate jump-list 'l2' into jump-list 'l1' -*/ -void luaK_concat (FuncState *fs, int *l1, int l2) { - if (l2 == NO_JUMP) return; /* nothing to concatenate? */ - else if (*l1 == NO_JUMP) /* no original list? */ - *l1 = l2; /* 'l1' points to 'l2' */ - else { - int list = *l1; - int next; - while ((next = getjump(fs, list)) != NO_JUMP) /* find last element */ - list = next; - fixjump(fs, list, l2); /* last element links to 'l2' */ - } -} - - -/* -** Create a jump instruction and return its position, so its destination -** can be fixed later (with 'fixjump'). If there are jumps to -** this position (kept in 'jpc'), link them all together so that -** 'patchlistaux' will fix all them directly to the final destination. -*/ -int luaK_jump (FuncState *fs) { - int jpc = fs->jpc; /* save list of jumps to here */ - int j; - fs->jpc = NO_JUMP; /* no more jumps to here */ - j = luaK_codeAsBx(fs, OP_JMP, 0, NO_JUMP); - luaK_concat(fs, &j, jpc); /* keep them on hold */ - return j; -} - - -/* -** Code a 'return' instruction -*/ -void luaK_ret (FuncState *fs, int first, int nret) { - luaK_codeABC(fs, OP_RETURN, first, nret+1, 0); -} - - -/* -** Code a "conditional jump", that is, a test or comparison opcode -** followed by a jump. Return jump position. -*/ -static int condjump (FuncState *fs, OpCode op, int A, int B, int C) { - luaK_codeABC(fs, op, A, B, C); - return luaK_jump(fs); -} - - -/* -** returns current 'pc' and marks it as a jump target (to avoid wrong -** optimizations with consecutive instructions not in the same basic block). -*/ -int luaK_getlabel (FuncState *fs) { - fs->lasttarget = fs->pc; - return fs->pc; -} - - -/* -** Returns the position of the instruction "controlling" a given -** jump (that is, its condition), or the jump itself if it is -** unconditional. -*/ -static Instruction *getjumpcontrol (FuncState *fs, int pc) { - Instruction *pi = &fs->f->code[pc]; - if (pc >= 1 && testTMode(GET_OPCODE(*(pi-1)))) - return pi-1; - else - return pi; -} - - -/* -** Patch destination register for a TESTSET instruction. -** If instruction in position 'node' is not a TESTSET, return 0 ("fails"). -** Otherwise, if 'reg' is not 'NO_REG', set it as the destination -** register. Otherwise, change instruction to a simple 'TEST' (produces -** no register value) -*/ -static int patchtestreg (FuncState *fs, int node, int reg) { - Instruction *i = getjumpcontrol(fs, node); - if (GET_OPCODE(*i) != OP_TESTSET) - return 0; /* cannot patch other instructions */ - if (reg != NO_REG && reg != GETARG_B(*i)) - SETARG_A(*i, reg); - else { - /* no register to put value or register already has the value; - change instruction to simple test */ - *i = CREATE_ABC(OP_TEST, GETARG_B(*i), 0, GETARG_C(*i)); - } - return 1; -} - - -/* -** Traverse a list of tests ensuring no one produces a value -*/ -static void removevalues (FuncState *fs, int list) { - for (; list != NO_JUMP; list = getjump(fs, list)) - patchtestreg(fs, list, NO_REG); -} - - -/* -** Traverse a list of tests, patching their destination address and -** registers: tests producing values jump to 'vtarget' (and put their -** values in 'reg'), other tests jump to 'dtarget'. -*/ -static void patchlistaux (FuncState *fs, int list, int vtarget, int reg, - int dtarget) { - while (list != NO_JUMP) { - int next = getjump(fs, list); - if (patchtestreg(fs, list, reg)) - fixjump(fs, list, vtarget); - else - fixjump(fs, list, dtarget); /* jump to default target */ - list = next; - } -} - - -/* -** Ensure all pending jumps to current position are fixed (jumping -** to current position with no values) and reset list of pending -** jumps -*/ -static void dischargejpc (FuncState *fs) { - patchlistaux(fs, fs->jpc, fs->pc, NO_REG, fs->pc); - fs->jpc = NO_JUMP; -} - - -/* -** Add elements in 'list' to list of pending jumps to "here" -** (current position) -*/ -void luaK_patchtohere (FuncState *fs, int list) { - luaK_getlabel(fs); /* mark "here" as a jump target */ - luaK_concat(fs, &fs->jpc, list); -} - - -/* -** Path all jumps in 'list' to jump to 'target'. -** (The assert means that we cannot fix a jump to a forward address -** because we only know addresses once code is generated.) -*/ -void luaK_patchlist (FuncState *fs, int list, int target) { - if (target == fs->pc) /* 'target' is current position? */ - luaK_patchtohere(fs, list); /* add list to pending jumps */ - else { - lua_assert(target < fs->pc); - patchlistaux(fs, list, target, NO_REG, target); - } -} - - -/* -** Path all jumps in 'list' to close upvalues up to given 'level' -** (The assertion checks that jumps either were closing nothing -** or were closing higher levels, from inner blocks.) -*/ -void luaK_patchclose (FuncState *fs, int list, int level) { - level++; /* argument is +1 to reserve 0 as non-op */ - for (; list != NO_JUMP; list = getjump(fs, list)) { - lua_assert(GET_OPCODE(fs->f->code[list]) == OP_JMP && - (GETARG_A(fs->f->code[list]) == 0 || - GETARG_A(fs->f->code[list]) >= level)); - SETARG_A(fs->f->code[list], level); - } -} - - -/* -** Emit instruction 'i', checking for array sizes and saving also its -** line information. Return 'i' position. -*/ -static int luaK_code (FuncState *fs, Instruction i) { - Proto *f = fs->f; - dischargejpc(fs); /* 'pc' will change */ - /* put new instruction in code array */ - luaM_growvector(fs->ls->L, f->code, fs->pc, f->sizecode, Instruction, - MAX_INT, "opcodes"); - f->code[fs->pc] = i; - /* save corresponding line information */ - luaM_growvector(fs->ls->L, f->lineinfo, fs->pc, f->sizelineinfo, int, - MAX_INT, "opcodes"); - f->lineinfo[fs->pc] = fs->ls->lastline; - return fs->pc++; -} - - -/* -** Format and emit an 'iABC' instruction. (Assertions check consistency -** of parameters versus opcode.) -*/ -int luaK_codeABC (FuncState *fs, OpCode o, int a, int b, int c) { - lua_assert(getOpMode(o) == iABC); - lua_assert(getBMode(o) != OpArgN || b == 0); - lua_assert(getCMode(o) != OpArgN || c == 0); - lua_assert(a <= MAXARG_A && b <= MAXARG_B && c <= MAXARG_C); - return luaK_code(fs, CREATE_ABC(o, a, b, c)); -} - - -/* -** Format and emit an 'iABx' instruction. -*/ -int luaK_codeABx (FuncState *fs, OpCode o, int a, unsigned int bc) { - lua_assert(getOpMode(o) == iABx || getOpMode(o) == iAsBx); - lua_assert(getCMode(o) == OpArgN); - lua_assert(a <= MAXARG_A && bc <= MAXARG_Bx); - return luaK_code(fs, CREATE_ABx(o, a, bc)); -} - - -/* -** Emit an "extra argument" instruction (format 'iAx') -*/ -static int codeextraarg (FuncState *fs, int a) { - lua_assert(a <= MAXARG_Ax); - return luaK_code(fs, CREATE_Ax(OP_EXTRAARG, a)); -} - - -/* -** Emit a "load constant" instruction, using either 'OP_LOADK' -** (if constant index 'k' fits in 18 bits) or an 'OP_LOADKX' -** instruction with "extra argument". -*/ -int luaK_codek (FuncState *fs, int reg, int k) { - if (k <= MAXARG_Bx) - return luaK_codeABx(fs, OP_LOADK, reg, k); - else { - int p = luaK_codeABx(fs, OP_LOADKX, reg, 0); - codeextraarg(fs, k); - return p; - } -} - - -/* -** Check register-stack level, keeping track of its maximum size -** in field 'maxstacksize' -*/ -void luaK_checkstack (FuncState *fs, int n) { - int newstack = fs->freereg + n; - if (newstack > fs->f->maxstacksize) { - if (newstack >= MAXREGS) - luaX_syntaxerror(fs->ls, - "function or expression needs too many registers"); - fs->f->maxstacksize = cast_byte(newstack); - } -} - - -/* -** Reserve 'n' registers in register stack -*/ -void luaK_reserveregs (FuncState *fs, int n) { - luaK_checkstack(fs, n); - fs->freereg += n; -} - - -/* -** Free register 'reg', if it is neither a constant index nor -** a local variable. -) -*/ -static void freereg (FuncState *fs, int reg) { - if (!ISK(reg) && reg >= fs->nactvar) { - fs->freereg--; - lua_assert(reg == fs->freereg); - } -} - - -/* -** Free register used by expression 'e' (if any) -*/ -static void freeexp (FuncState *fs, expdesc *e) { - if (e->k == VNONRELOC) - freereg(fs, e->u.info); -} - - -/* -** Free registers used by expressions 'e1' and 'e2' (if any) in proper -** order. -*/ -static void freeexps (FuncState *fs, expdesc *e1, expdesc *e2) { - int r1 = (e1->k == VNONRELOC) ? e1->u.info : -1; - int r2 = (e2->k == VNONRELOC) ? e2->u.info : -1; - if (r1 > r2) { - freereg(fs, r1); - freereg(fs, r2); - } - else { - freereg(fs, r2); - freereg(fs, r1); - } -} - - -/* -** Add constant 'v' to prototype's list of constants (field 'k'). -** Use scanner's table to cache position of constants in constant list -** and try to reuse constants. Because some values should not be used -** as keys (nil cannot be a key, integer keys can collapse with float -** keys), the caller must provide a useful 'key' for indexing the cache. -*/ -static int addk (FuncState *fs, TValue *key, TValue *v) { - lua_State *L = fs->ls->L; - Proto *f = fs->f; - TValue *idx = luaH_set(L, fs->ls->h, key); /* index scanner table */ - int k, oldsize; - if (ttisinteger(idx)) { /* is there an index there? */ - k = cast_int(ivalue(idx)); - /* correct value? (warning: must distinguish floats from integers!) */ - if (k < fs->nk && ttype(&f->k[k]) == ttype(v) && - luaV_rawequalobj(&f->k[k], v)) - return k; /* reuse index */ - } - /* constant not found; create a new entry */ - oldsize = f->sizek; - k = fs->nk; - /* numerical value does not need GC barrier; - table has no metatable, so it does not need to invalidate cache */ - setivalue(idx, k); - luaM_growvector(L, f->k, k, f->sizek, TValue, MAXARG_Ax, "constants"); - while (oldsize < f->sizek) setnilvalue(&f->k[oldsize++]); - setobj(L, &f->k[k], v); - fs->nk++; - luaC_barrier(L, f, v); - return k; -} - - -/* -** Add a string to list of constants and return its index. -*/ -int luaK_stringK (FuncState *fs, TString *s) { - TValue o; - setsvalue(fs->ls->L, &o, s); - return addk(fs, &o, &o); /* use string itself as key */ -} - - -/* -** Add an integer to list of constants and return its index. -** Integers use userdata as keys to avoid collision with floats with -** same value; conversion to 'void*' is used only for hashing, so there -** are no "precision" problems. -*/ -int luaK_intK (FuncState *fs, lua_Integer n) { - TValue k, o; - setpvalue(&k, cast(void*, cast(size_t, n))); - setivalue(&o, n); - return addk(fs, &k, &o); -} - -/* -** Add a float to list of constants and return its index. -*/ -static int luaK_numberK (FuncState *fs, lua_Number r) { - TValue o; - setfltvalue(&o, r); - return addk(fs, &o, &o); /* use number itself as key */ -} - - -/* -** Add a boolean to list of constants and return its index. -*/ -static int boolK (FuncState *fs, int b) { - TValue o; - setbvalue(&o, b); - return addk(fs, &o, &o); /* use boolean itself as key */ -} - - -/* -** Add nil to list of constants and return its index. -*/ -static int nilK (FuncState *fs) { - TValue k, v; - setnilvalue(&v); - /* cannot use nil as key; instead use table itself to represent nil */ - sethvalue(fs->ls->L, &k, fs->ls->h); - return addk(fs, &k, &v); -} - - -/* -** Fix an expression to return the number of results 'nresults'. -** Either 'e' is a multi-ret expression (function call or vararg) -** or 'nresults' is LUA_MULTRET (as any expression can satisfy that). -*/ -void luaK_setreturns (FuncState *fs, expdesc *e, int nresults) { - if (e->k == VCALL) { /* expression is an open function call? */ - SETARG_C(getinstruction(fs, e), nresults + 1); - } - else if (e->k == VVARARG) { - Instruction *pc = &getinstruction(fs, e); - SETARG_B(*pc, nresults + 1); - SETARG_A(*pc, fs->freereg); - luaK_reserveregs(fs, 1); - } - else lua_assert(nresults == LUA_MULTRET); -} - - -/* -** Fix an expression to return one result. -** If expression is not a multi-ret expression (function call or -** vararg), it already returns one result, so nothing needs to be done. -** Function calls become VNONRELOC expressions (as its result comes -** fixed in the base register of the call), while vararg expressions -** become VRELOCABLE (as OP_VARARG puts its results where it wants). -** (Calls are created returning one result, so that does not need -** to be fixed.) -*/ -void luaK_setoneret (FuncState *fs, expdesc *e) { - if (e->k == VCALL) { /* expression is an open function call? */ - /* already returns 1 value */ - lua_assert(GETARG_C(getinstruction(fs, e)) == 2); - e->k = VNONRELOC; /* result has fixed position */ - e->u.info = GETARG_A(getinstruction(fs, e)); - } - else if (e->k == VVARARG) { - SETARG_B(getinstruction(fs, e), 2); - e->k = VRELOCABLE; /* can relocate its simple result */ - } -} - - -/* -** Ensure that expression 'e' is not a variable. -*/ -void luaK_dischargevars (FuncState *fs, expdesc *e) { - switch (e->k) { - case VLOCAL: { /* already in a register */ - e->k = VNONRELOC; /* becomes a non-relocatable value */ - break; - } - case VUPVAL: { /* move value to some (pending) register */ - e->u.info = luaK_codeABC(fs, OP_GETUPVAL, 0, e->u.info, 0); - e->k = VRELOCABLE; - break; - } - case VINDEXED: { - OpCode op; - freereg(fs, e->u.ind.idx); - if (e->u.ind.vt == VLOCAL) { /* is 't' in a register? */ - freereg(fs, e->u.ind.t); - op = OP_GETTABLE; - } - else { - lua_assert(e->u.ind.vt == VUPVAL); - op = OP_GETTABUP; /* 't' is in an upvalue */ - } - e->u.info = luaK_codeABC(fs, op, 0, e->u.ind.t, e->u.ind.idx); - e->k = VRELOCABLE; - break; - } - case VVARARG: case VCALL: { - luaK_setoneret(fs, e); - break; - } - default: break; /* there is one value available (somewhere) */ - } -} - - -/* -** Ensures expression value is in register 'reg' (and therefore -** 'e' will become a non-relocatable expression). -*/ -static void discharge2reg (FuncState *fs, expdesc *e, int reg) { - luaK_dischargevars(fs, e); - switch (e->k) { - case VNIL: { - luaK_nil(fs, reg, 1); - break; - } - case VFALSE: case VTRUE: { - luaK_codeABC(fs, OP_LOADBOOL, reg, e->k == VTRUE, 0); - break; - } - case VK: { - luaK_codek(fs, reg, e->u.info); - break; - } - case VKFLT: { - luaK_codek(fs, reg, luaK_numberK(fs, e->u.nval)); - break; - } - case VKINT: { - luaK_codek(fs, reg, luaK_intK(fs, e->u.ival)); - break; - } - case VRELOCABLE: { - Instruction *pc = &getinstruction(fs, e); - SETARG_A(*pc, reg); /* instruction will put result in 'reg' */ - break; - } - case VNONRELOC: { - if (reg != e->u.info) - luaK_codeABC(fs, OP_MOVE, reg, e->u.info, 0); - break; - } - default: { - lua_assert(e->k == VJMP); - return; /* nothing to do... */ - } - } - e->u.info = reg; - e->k = VNONRELOC; -} - - -/* -** Ensures expression value is in any register. -*/ -static void discharge2anyreg (FuncState *fs, expdesc *e) { - if (e->k != VNONRELOC) { /* no fixed register yet? */ - luaK_reserveregs(fs, 1); /* get a register */ - discharge2reg(fs, e, fs->freereg-1); /* put value there */ - } -} - - -static int code_loadbool (FuncState *fs, int A, int b, int jump) { - luaK_getlabel(fs); /* those instructions may be jump targets */ - return luaK_codeABC(fs, OP_LOADBOOL, A, b, jump); -} - - -/* -** check whether list has any jump that do not produce a value -** or produce an inverted value -*/ -static int need_value (FuncState *fs, int list) { - for (; list != NO_JUMP; list = getjump(fs, list)) { - Instruction i = *getjumpcontrol(fs, list); - if (GET_OPCODE(i) != OP_TESTSET) return 1; - } - return 0; /* not found */ -} - - -/* -** Ensures final expression result (including results from its jump -** lists) is in register 'reg'. -** If expression has jumps, need to patch these jumps either to -** its final position or to "load" instructions (for those tests -** that do not produce values). -*/ -static void exp2reg (FuncState *fs, expdesc *e, int reg) { - discharge2reg(fs, e, reg); - if (e->k == VJMP) /* expression itself is a test? */ - luaK_concat(fs, &e->t, e->u.info); /* put this jump in 't' list */ - if (hasjumps(e)) { - int final; /* position after whole expression */ - int p_f = NO_JUMP; /* position of an eventual LOAD false */ - int p_t = NO_JUMP; /* position of an eventual LOAD true */ - if (need_value(fs, e->t) || need_value(fs, e->f)) { - int fj = (e->k == VJMP) ? NO_JUMP : luaK_jump(fs); - p_f = code_loadbool(fs, reg, 0, 1); - p_t = code_loadbool(fs, reg, 1, 0); - luaK_patchtohere(fs, fj); - } - final = luaK_getlabel(fs); - patchlistaux(fs, e->f, final, reg, p_f); - patchlistaux(fs, e->t, final, reg, p_t); - } - e->f = e->t = NO_JUMP; - e->u.info = reg; - e->k = VNONRELOC; -} - - -/* -** Ensures final expression result (including results from its jump -** lists) is in next available register. -*/ -void luaK_exp2nextreg (FuncState *fs, expdesc *e) { - luaK_dischargevars(fs, e); - freeexp(fs, e); - luaK_reserveregs(fs, 1); - exp2reg(fs, e, fs->freereg - 1); -} - - -/* -** Ensures final expression result (including results from its jump -** lists) is in some (any) register and return that register. -*/ -int luaK_exp2anyreg (FuncState *fs, expdesc *e) { - luaK_dischargevars(fs, e); - if (e->k == VNONRELOC) { /* expression already has a register? */ - if (!hasjumps(e)) /* no jumps? */ - return e->u.info; /* result is already in a register */ - if (e->u.info >= fs->nactvar) { /* reg. is not a local? */ - exp2reg(fs, e, e->u.info); /* put final result in it */ - return e->u.info; - } - } - luaK_exp2nextreg(fs, e); /* otherwise, use next available register */ - return e->u.info; -} - - -/* -** Ensures final expression result is either in a register or in an -** upvalue. -*/ -void luaK_exp2anyregup (FuncState *fs, expdesc *e) { - if (e->k != VUPVAL || hasjumps(e)) - luaK_exp2anyreg(fs, e); -} - - -/* -** Ensures final expression result is either in a register or it is -** a constant. -*/ -void luaK_exp2val (FuncState *fs, expdesc *e) { - if (hasjumps(e)) - luaK_exp2anyreg(fs, e); - else - luaK_dischargevars(fs, e); -} - - -/* -** Ensures final expression result is in a valid R/K index -** (that is, it is either in a register or in 'k' with an index -** in the range of R/K indices). -** Returns R/K index. -*/ -int luaK_exp2RK (FuncState *fs, expdesc *e) { - luaK_exp2val(fs, e); - switch (e->k) { /* move constants to 'k' */ - case VTRUE: e->u.info = boolK(fs, 1); goto vk; - case VFALSE: e->u.info = boolK(fs, 0); goto vk; - case VNIL: e->u.info = nilK(fs); goto vk; - case VKINT: e->u.info = luaK_intK(fs, e->u.ival); goto vk; - case VKFLT: e->u.info = luaK_numberK(fs, e->u.nval); goto vk; - case VK: - vk: - e->k = VK; - if (e->u.info <= MAXINDEXRK) /* constant fits in 'argC'? */ - return RKASK(e->u.info); - else break; - default: break; - } - /* not a constant in the right range: put it in a register */ - return luaK_exp2anyreg(fs, e); -} - - -/* -** Generate code to store result of expression 'ex' into variable 'var'. -*/ -void luaK_storevar (FuncState *fs, expdesc *var, expdesc *ex) { - switch (var->k) { - case VLOCAL: { - freeexp(fs, ex); - exp2reg(fs, ex, var->u.info); /* compute 'ex' into proper place */ - return; - } - case VUPVAL: { - int e = luaK_exp2anyreg(fs, ex); - luaK_codeABC(fs, OP_SETUPVAL, e, var->u.info, 0); - break; - } - case VINDEXED: { - OpCode op = (var->u.ind.vt == VLOCAL) ? OP_SETTABLE : OP_SETTABUP; - int e = luaK_exp2RK(fs, ex); - luaK_codeABC(fs, op, var->u.ind.t, var->u.ind.idx, e); - break; - } - default: lua_assert(0); /* invalid var kind to store */ - } - freeexp(fs, ex); -} - - -/* -** Emit SELF instruction (convert expression 'e' into 'e:key(e,'). -*/ -void luaK_self (FuncState *fs, expdesc *e, expdesc *key) { - int ereg; - luaK_exp2anyreg(fs, e); - ereg = e->u.info; /* register where 'e' was placed */ - freeexp(fs, e); - e->u.info = fs->freereg; /* base register for op_self */ - e->k = VNONRELOC; /* self expression has a fixed register */ - luaK_reserveregs(fs, 2); /* function and 'self' produced by op_self */ - luaK_codeABC(fs, OP_SELF, e->u.info, ereg, luaK_exp2RK(fs, key)); - freeexp(fs, key); -} - - -/* -** Negate condition 'e' (where 'e' is a comparison). -*/ -static void negatecondition (FuncState *fs, expdesc *e) { - Instruction *pc = getjumpcontrol(fs, e->u.info); - lua_assert(testTMode(GET_OPCODE(*pc)) && GET_OPCODE(*pc) != OP_TESTSET && - GET_OPCODE(*pc) != OP_TEST); - SETARG_A(*pc, !(GETARG_A(*pc))); -} - - -/* -** Emit instruction to jump if 'e' is 'cond' (that is, if 'cond' -** is true, code will jump if 'e' is true.) Return jump position. -** Optimize when 'e' is 'not' something, inverting the condition -** and removing the 'not'. -*/ -static int jumponcond (FuncState *fs, expdesc *e, int cond) { - if (e->k == VRELOCABLE) { - Instruction ie = getinstruction(fs, e); - if (GET_OPCODE(ie) == OP_NOT) { - fs->pc--; /* remove previous OP_NOT */ - return condjump(fs, OP_TEST, GETARG_B(ie), 0, !cond); - } - /* else go through */ - } - discharge2anyreg(fs, e); - freeexp(fs, e); - return condjump(fs, OP_TESTSET, NO_REG, e->u.info, cond); -} - - -/* -** Emit code to go through if 'e' is true, jump otherwise. -*/ -void luaK_goiftrue (FuncState *fs, expdesc *e) { - int pc; /* pc of new jump */ - luaK_dischargevars(fs, e); - switch (e->k) { - case VJMP: { /* condition? */ - negatecondition(fs, e); /* jump when it is false */ - pc = e->u.info; /* save jump position */ - break; - } - case VK: case VKFLT: case VKINT: case VTRUE: { - pc = NO_JUMP; /* always true; do nothing */ - break; - } - default: { - pc = jumponcond(fs, e, 0); /* jump when false */ - break; - } - } - luaK_concat(fs, &e->f, pc); /* insert new jump in false list */ - luaK_patchtohere(fs, e->t); /* true list jumps to here (to go through) */ - e->t = NO_JUMP; -} - - -/* -** Emit code to go through if 'e' is false, jump otherwise. -*/ -void luaK_goiffalse (FuncState *fs, expdesc *e) { - int pc; /* pc of new jump */ - luaK_dischargevars(fs, e); - switch (e->k) { - case VJMP: { - pc = e->u.info; /* already jump if true */ - break; - } - case VNIL: case VFALSE: { - pc = NO_JUMP; /* always false; do nothing */ - break; - } - default: { - pc = jumponcond(fs, e, 1); /* jump if true */ - break; - } - } - luaK_concat(fs, &e->t, pc); /* insert new jump in 't' list */ - luaK_patchtohere(fs, e->f); /* false list jumps to here (to go through) */ - e->f = NO_JUMP; -} - - -/* -** Code 'not e', doing constant folding. -*/ -static void codenot (FuncState *fs, expdesc *e) { - luaK_dischargevars(fs, e); - switch (e->k) { - case VNIL: case VFALSE: { - e->k = VTRUE; /* true == not nil == not false */ - break; - } - case VK: case VKFLT: case VKINT: case VTRUE: { - e->k = VFALSE; /* false == not "x" == not 0.5 == not 1 == not true */ - break; - } - case VJMP: { - negatecondition(fs, e); - break; - } - case VRELOCABLE: - case VNONRELOC: { - discharge2anyreg(fs, e); - freeexp(fs, e); - e->u.info = luaK_codeABC(fs, OP_NOT, 0, e->u.info, 0); - e->k = VRELOCABLE; - break; - } - default: lua_assert(0); /* cannot happen */ - } - /* interchange true and false lists */ - { int temp = e->f; e->f = e->t; e->t = temp; } - removevalues(fs, e->f); /* values are useless when negated */ - removevalues(fs, e->t); -} - - -/* -** Create expression 't[k]'. 't' must have its final result already in a -** register or upvalue. -*/ -void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k) { - lua_assert(!hasjumps(t) && (vkisinreg(t->k) || t->k == VUPVAL)); - t->u.ind.t = t->u.info; /* register or upvalue index */ - t->u.ind.idx = luaK_exp2RK(fs, k); /* R/K index for key */ - t->u.ind.vt = (t->k == VUPVAL) ? VUPVAL : VLOCAL; - t->k = VINDEXED; -} - - -/* -** Return false if folding can raise an error. -** Bitwise operations need operands convertible to integers; division -** operations cannot have 0 as divisor. -*/ -static int validop (int op, TValue *v1, TValue *v2) { - switch (op) { - case LUA_OPBAND: case LUA_OPBOR: case LUA_OPBXOR: - case LUA_OPSHL: case LUA_OPSHR: case LUA_OPBNOT: { /* conversion errors */ - lua_Integer i; - return (tointeger(v1, &i) && tointeger(v2, &i)); - } - case LUA_OPDIV: case LUA_OPIDIV: case LUA_OPMOD: /* division by 0 */ - return (nvalue(v2) != 0); - default: return 1; /* everything else is valid */ - } -} - - -/* -** Try to "constant-fold" an operation; return 1 iff successful. -** (In this case, 'e1' has the final result.) -*/ -static int constfolding (FuncState *fs, int op, expdesc *e1, - const expdesc *e2) { - TValue v1, v2, res; - if (!tonumeral(e1, &v1) || !tonumeral(e2, &v2) || !validop(op, &v1, &v2)) - return 0; /* non-numeric operands or not safe to fold */ - luaO_arith(fs->ls->L, op, &v1, &v2, &res); /* does operation */ - if (ttisinteger(&res)) { - e1->k = VKINT; - e1->u.ival = ivalue(&res); - } - else { /* folds neither NaN nor 0.0 (to avoid problems with -0.0) */ - lua_Number n = fltvalue(&res); - if (luai_numisnan(n) || n == 0) - return 0; - e1->k = VKFLT; - e1->u.nval = n; - } - return 1; -} - - -/* -** Emit code for unary expressions that "produce values" -** (everything but 'not'). -** Expression to produce final result will be encoded in 'e'. -*/ -static void codeunexpval (FuncState *fs, OpCode op, expdesc *e, int line) { - int r = luaK_exp2anyreg(fs, e); /* opcodes operate only on registers */ - freeexp(fs, e); - e->u.info = luaK_codeABC(fs, op, 0, r, 0); /* generate opcode */ - e->k = VRELOCABLE; /* all those operations are relocatable */ - luaK_fixline(fs, line); -} - - -/* -** Emit code for binary expressions that "produce values" -** (everything but logical operators 'and'/'or' and comparison -** operators). -** Expression to produce final result will be encoded in 'e1'. -** Because 'luaK_exp2RK' can free registers, its calls must be -** in "stack order" (that is, first on 'e2', which may have more -** recent registers to be released). -*/ -static void codebinexpval (FuncState *fs, OpCode op, - expdesc *e1, expdesc *e2, int line) { - int rk2 = luaK_exp2RK(fs, e2); /* both operands are "RK" */ - int rk1 = luaK_exp2RK(fs, e1); - freeexps(fs, e1, e2); - e1->u.info = luaK_codeABC(fs, op, 0, rk1, rk2); /* generate opcode */ - e1->k = VRELOCABLE; /* all those operations are relocatable */ - luaK_fixline(fs, line); -} - - -/* -** Emit code for comparisons. -** 'e1' was already put in R/K form by 'luaK_infix'. -*/ -static void codecomp (FuncState *fs, BinOpr opr, expdesc *e1, expdesc *e2) { - int rk1 = (e1->k == VK) ? RKASK(e1->u.info) - : check_exp(e1->k == VNONRELOC, e1->u.info); - int rk2 = luaK_exp2RK(fs, e2); - freeexps(fs, e1, e2); - switch (opr) { - case OPR_NE: { /* '(a ~= b)' ==> 'not (a == b)' */ - e1->u.info = condjump(fs, OP_EQ, 0, rk1, rk2); - break; - } - case OPR_GT: case OPR_GE: { - /* '(a > b)' ==> '(b < a)'; '(a >= b)' ==> '(b <= a)' */ - OpCode op = cast(OpCode, (opr - OPR_NE) + OP_EQ); - e1->u.info = condjump(fs, op, 1, rk2, rk1); /* invert operands */ - break; - } - default: { /* '==', '<', '<=' use their own opcodes */ - OpCode op = cast(OpCode, (opr - OPR_EQ) + OP_EQ); - e1->u.info = condjump(fs, op, 1, rk1, rk2); - break; - } - } - e1->k = VJMP; -} - - -/* -** Aplly prefix operation 'op' to expression 'e'. -*/ -void luaK_prefix (FuncState *fs, UnOpr op, expdesc *e, int line) { - static const expdesc ef = {VKINT, {0}, NO_JUMP, NO_JUMP}; - switch (op) { - case OPR_MINUS: case OPR_BNOT: /* use 'ef' as fake 2nd operand */ - if (constfolding(fs, op + LUA_OPUNM, e, &ef)) - break; - /* FALLTHROUGH */ - case OPR_LEN: - codeunexpval(fs, cast(OpCode, op + OP_UNM), e, line); - break; - case OPR_NOT: codenot(fs, e); break; - default: lua_assert(0); - } -} - - -/* -** Process 1st operand 'v' of binary operation 'op' before reading -** 2nd operand. -*/ -void luaK_infix (FuncState *fs, BinOpr op, expdesc *v) { - switch (op) { - case OPR_AND: { - luaK_goiftrue(fs, v); /* go ahead only if 'v' is true */ - break; - } - case OPR_OR: { - luaK_goiffalse(fs, v); /* go ahead only if 'v' is false */ - break; - } - case OPR_CONCAT: { - luaK_exp2nextreg(fs, v); /* operand must be on the 'stack' */ - break; - } - case OPR_ADD: case OPR_SUB: - case OPR_MUL: case OPR_DIV: case OPR_IDIV: - case OPR_MOD: case OPR_POW: - case OPR_BAND: case OPR_BOR: case OPR_BXOR: - case OPR_SHL: case OPR_SHR: { - if (!tonumeral(v, NULL)) - luaK_exp2RK(fs, v); - /* else keep numeral, which may be folded with 2nd operand */ - break; - } - default: { - luaK_exp2RK(fs, v); - break; - } - } -} - - -/* -** Finalize code for binary operation, after reading 2nd operand. -** For '(a .. b .. c)' (which is '(a .. (b .. c))', because -** concatenation is right associative), merge second CONCAT into first -** one. -*/ -void luaK_posfix (FuncState *fs, BinOpr op, - expdesc *e1, expdesc *e2, int line) { - switch (op) { - case OPR_AND: { - lua_assert(e1->t == NO_JUMP); /* list closed by 'luK_infix' */ - luaK_dischargevars(fs, e2); - luaK_concat(fs, &e2->f, e1->f); - *e1 = *e2; - break; - } - case OPR_OR: { - lua_assert(e1->f == NO_JUMP); /* list closed by 'luK_infix' */ - luaK_dischargevars(fs, e2); - luaK_concat(fs, &e2->t, e1->t); - *e1 = *e2; - break; - } - case OPR_CONCAT: { - luaK_exp2val(fs, e2); - if (e2->k == VRELOCABLE && - GET_OPCODE(getinstruction(fs, e2)) == OP_CONCAT) { - lua_assert(e1->u.info == GETARG_B(getinstruction(fs, e2))-1); - freeexp(fs, e1); - SETARG_B(getinstruction(fs, e2), e1->u.info); - e1->k = VRELOCABLE; e1->u.info = e2->u.info; - } - else { - luaK_exp2nextreg(fs, e2); /* operand must be on the 'stack' */ - codebinexpval(fs, OP_CONCAT, e1, e2, line); - } - break; - } - case OPR_ADD: case OPR_SUB: case OPR_MUL: case OPR_DIV: - case OPR_IDIV: case OPR_MOD: case OPR_POW: - case OPR_BAND: case OPR_BOR: case OPR_BXOR: - case OPR_SHL: case OPR_SHR: { - if (!constfolding(fs, op + LUA_OPADD, e1, e2)) - codebinexpval(fs, cast(OpCode, op + OP_ADD), e1, e2, line); - break; - } - case OPR_EQ: case OPR_LT: case OPR_LE: - case OPR_NE: case OPR_GT: case OPR_GE: { - codecomp(fs, op, e1, e2); - break; - } - default: lua_assert(0); - } -} - - -/* -** Change line information associated with current position. -*/ -void luaK_fixline (FuncState *fs, int line) { - fs->f->lineinfo[fs->pc - 1] = line; -} - - -/* -** Emit a SETLIST instruction. -** 'base' is register that keeps table; -** 'nelems' is #table plus those to be stored now; -** 'tostore' is number of values (in registers 'base + 1',...) to add to -** table (or LUA_MULTRET to add up to stack top). -*/ -void luaK_setlist (FuncState *fs, int base, int nelems, int tostore) { - int c = (nelems - 1)/LFIELDS_PER_FLUSH + 1; - int b = (tostore == LUA_MULTRET) ? 0 : tostore; - lua_assert(tostore != 0 && tostore <= LFIELDS_PER_FLUSH); - if (c <= MAXARG_C) - luaK_codeABC(fs, OP_SETLIST, base, b, c); - else if (c <= MAXARG_Ax) { - luaK_codeABC(fs, OP_SETLIST, base, b, 0); - codeextraarg(fs, c); - } - else - luaX_syntaxerror(fs->ls, "constructor too long"); - fs->freereg = base + 1; /* free registers with list values */ -} - diff --git a/deps/rcheevos/test/lua/src/lcode.h b/deps/rcheevos/test/lua/src/lcode.h deleted file mode 100644 index cd306d573a..0000000000 --- a/deps/rcheevos/test/lua/src/lcode.h +++ /dev/null @@ -1,88 +0,0 @@ -/* -** $Id: lcode.h,v 1.64 2016/01/05 16:22:37 roberto Exp $ -** Code generator for Lua -** See Copyright Notice in lua.h -*/ - -#ifndef lcode_h -#define lcode_h - -#include "llex.h" -#include "lobject.h" -#include "lopcodes.h" -#include "lparser.h" - - -/* -** Marks the end of a patch list. It is an invalid value both as an absolute -** address, and as a list link (would link an element to itself). -*/ -#define NO_JUMP (-1) - - -/* -** grep "ORDER OPR" if you change these enums (ORDER OP) -*/ -typedef enum BinOpr { - OPR_ADD, OPR_SUB, OPR_MUL, OPR_MOD, OPR_POW, - OPR_DIV, - OPR_IDIV, - OPR_BAND, OPR_BOR, OPR_BXOR, - OPR_SHL, OPR_SHR, - OPR_CONCAT, - OPR_EQ, OPR_LT, OPR_LE, - OPR_NE, OPR_GT, OPR_GE, - OPR_AND, OPR_OR, - OPR_NOBINOPR -} BinOpr; - - -typedef enum UnOpr { OPR_MINUS, OPR_BNOT, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr; - - -/* get (pointer to) instruction of given 'expdesc' */ -#define getinstruction(fs,e) ((fs)->f->code[(e)->u.info]) - -#define luaK_codeAsBx(fs,o,A,sBx) luaK_codeABx(fs,o,A,(sBx)+MAXARG_sBx) - -#define luaK_setmultret(fs,e) luaK_setreturns(fs, e, LUA_MULTRET) - -#define luaK_jumpto(fs,t) luaK_patchlist(fs, luaK_jump(fs), t) - -LUAI_FUNC int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx); -LUAI_FUNC int luaK_codeABC (FuncState *fs, OpCode o, int A, int B, int C); -LUAI_FUNC int luaK_codek (FuncState *fs, int reg, int k); -LUAI_FUNC void luaK_fixline (FuncState *fs, int line); -LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n); -LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n); -LUAI_FUNC void luaK_checkstack (FuncState *fs, int n); -LUAI_FUNC int luaK_stringK (FuncState *fs, TString *s); -LUAI_FUNC int luaK_intK (FuncState *fs, lua_Integer n); -LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e); -LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e); -LUAI_FUNC void luaK_exp2anyregup (FuncState *fs, expdesc *e); -LUAI_FUNC void luaK_exp2nextreg (FuncState *fs, expdesc *e); -LUAI_FUNC void luaK_exp2val (FuncState *fs, expdesc *e); -LUAI_FUNC int luaK_exp2RK (FuncState *fs, expdesc *e); -LUAI_FUNC void luaK_self (FuncState *fs, expdesc *e, expdesc *key); -LUAI_FUNC void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k); -LUAI_FUNC void luaK_goiftrue (FuncState *fs, expdesc *e); -LUAI_FUNC void luaK_goiffalse (FuncState *fs, expdesc *e); -LUAI_FUNC void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e); -LUAI_FUNC void luaK_setreturns (FuncState *fs, expdesc *e, int nresults); -LUAI_FUNC void luaK_setoneret (FuncState *fs, expdesc *e); -LUAI_FUNC int luaK_jump (FuncState *fs); -LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret); -LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target); -LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list); -LUAI_FUNC void luaK_patchclose (FuncState *fs, int list, int level); -LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2); -LUAI_FUNC int luaK_getlabel (FuncState *fs); -LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v, int line); -LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v); -LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1, - expdesc *v2, int line); -LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore); - - -#endif diff --git a/deps/rcheevos/test/lua/src/lcorolib.c b/deps/rcheevos/test/lua/src/lcorolib.c deleted file mode 100644 index 2303429e7b..0000000000 --- a/deps/rcheevos/test/lua/src/lcorolib.c +++ /dev/null @@ -1,168 +0,0 @@ -/* -** $Id: lcorolib.c,v 1.10 2016/04/11 19:19:55 roberto Exp $ -** Coroutine Library -** See Copyright Notice in lua.h -*/ - -#define lcorolib_c -#define LUA_LIB - -#include "lprefix.h" - - -#include - -#include "lua.h" - -#include "lauxlib.h" -#include "lualib.h" - - -static lua_State *getco (lua_State *L) { - lua_State *co = lua_tothread(L, 1); - luaL_argcheck(L, co, 1, "thread expected"); - return co; -} - - -static int auxresume (lua_State *L, lua_State *co, int narg) { - int status; - if (!lua_checkstack(co, narg)) { - lua_pushliteral(L, "too many arguments to resume"); - return -1; /* error flag */ - } - if (lua_status(co) == LUA_OK && lua_gettop(co) == 0) { - lua_pushliteral(L, "cannot resume dead coroutine"); - return -1; /* error flag */ - } - lua_xmove(L, co, narg); - status = lua_resume(co, L, narg); - if (status == LUA_OK || status == LUA_YIELD) { - int nres = lua_gettop(co); - if (!lua_checkstack(L, nres + 1)) { - lua_pop(co, nres); /* remove results anyway */ - lua_pushliteral(L, "too many results to resume"); - return -1; /* error flag */ - } - lua_xmove(co, L, nres); /* move yielded values */ - return nres; - } - else { - lua_xmove(co, L, 1); /* move error message */ - return -1; /* error flag */ - } -} - - -static int luaB_coresume (lua_State *L) { - lua_State *co = getco(L); - int r; - r = auxresume(L, co, lua_gettop(L) - 1); - if (r < 0) { - lua_pushboolean(L, 0); - lua_insert(L, -2); - return 2; /* return false + error message */ - } - else { - lua_pushboolean(L, 1); - lua_insert(L, -(r + 1)); - return r + 1; /* return true + 'resume' returns */ - } -} - - -static int luaB_auxwrap (lua_State *L) { - lua_State *co = lua_tothread(L, lua_upvalueindex(1)); - int r = auxresume(L, co, lua_gettop(L)); - if (r < 0) { - if (lua_type(L, -1) == LUA_TSTRING) { /* error object is a string? */ - luaL_where(L, 1); /* add extra info */ - lua_insert(L, -2); - lua_concat(L, 2); - } - return lua_error(L); /* propagate error */ - } - return r; -} - - -static int luaB_cocreate (lua_State *L) { - lua_State *NL; - luaL_checktype(L, 1, LUA_TFUNCTION); - NL = lua_newthread(L); - lua_pushvalue(L, 1); /* move function to top */ - lua_xmove(L, NL, 1); /* move function from L to NL */ - return 1; -} - - -static int luaB_cowrap (lua_State *L) { - luaB_cocreate(L); - lua_pushcclosure(L, luaB_auxwrap, 1); - return 1; -} - - -static int luaB_yield (lua_State *L) { - return lua_yield(L, lua_gettop(L)); -} - - -static int luaB_costatus (lua_State *L) { - lua_State *co = getco(L); - if (L == co) lua_pushliteral(L, "running"); - else { - switch (lua_status(co)) { - case LUA_YIELD: - lua_pushliteral(L, "suspended"); - break; - case LUA_OK: { - lua_Debug ar; - if (lua_getstack(co, 0, &ar) > 0) /* does it have frames? */ - lua_pushliteral(L, "normal"); /* it is running */ - else if (lua_gettop(co) == 0) - lua_pushliteral(L, "dead"); - else - lua_pushliteral(L, "suspended"); /* initial state */ - break; - } - default: /* some error occurred */ - lua_pushliteral(L, "dead"); - break; - } - } - return 1; -} - - -static int luaB_yieldable (lua_State *L) { - lua_pushboolean(L, lua_isyieldable(L)); - return 1; -} - - -static int luaB_corunning (lua_State *L) { - int ismain = lua_pushthread(L); - lua_pushboolean(L, ismain); - return 2; -} - - -static const luaL_Reg co_funcs[] = { - {"create", luaB_cocreate}, - {"resume", luaB_coresume}, - {"running", luaB_corunning}, - {"status", luaB_costatus}, - {"wrap", luaB_cowrap}, - {"yield", luaB_yield}, - {"isyieldable", luaB_yieldable}, - {NULL, NULL} -}; - - - -LUAMOD_API int luaopen_coroutine (lua_State *L) { - luaL_newlib(L, co_funcs); - return 1; -} - diff --git a/deps/rcheevos/test/lua/src/lctype.c b/deps/rcheevos/test/lua/src/lctype.c deleted file mode 100644 index ae9367e691..0000000000 --- a/deps/rcheevos/test/lua/src/lctype.c +++ /dev/null @@ -1,55 +0,0 @@ -/* -** $Id: lctype.c,v 1.12 2014/11/02 19:19:04 roberto Exp $ -** 'ctype' functions for Lua -** See Copyright Notice in lua.h -*/ - -#define lctype_c -#define LUA_CORE - -#include "lprefix.h" - - -#include "lctype.h" - -#if !LUA_USE_CTYPE /* { */ - -#include - -LUAI_DDEF const lu_byte luai_ctype_[UCHAR_MAX + 2] = { - 0x00, /* EOZ */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0. */ - 0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x0c, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, /* 2. */ - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, /* 3. */ - 0x16, 0x16, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x05, /* 4. */ - 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, - 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, /* 5. */ - 0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x05, - 0x04, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x05, /* 6. */ - 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, - 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, /* 7. */ - 0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 8. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 9. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* a. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* b. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* c. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* d. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* e. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* f. */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -}; - -#endif /* } */ diff --git a/deps/rcheevos/test/lua/src/lctype.h b/deps/rcheevos/test/lua/src/lctype.h deleted file mode 100644 index 99c7d12237..0000000000 --- a/deps/rcheevos/test/lua/src/lctype.h +++ /dev/null @@ -1,95 +0,0 @@ -/* -** $Id: lctype.h,v 1.12 2011/07/15 12:50:29 roberto Exp $ -** 'ctype' functions for Lua -** See Copyright Notice in lua.h -*/ - -#ifndef lctype_h -#define lctype_h - -#include "lua.h" - - -/* -** WARNING: the functions defined here do not necessarily correspond -** to the similar functions in the standard C ctype.h. They are -** optimized for the specific needs of Lua -*/ - -#if !defined(LUA_USE_CTYPE) - -#if 'A' == 65 && '0' == 48 -/* ASCII case: can use its own tables; faster and fixed */ -#define LUA_USE_CTYPE 0 -#else -/* must use standard C ctype */ -#define LUA_USE_CTYPE 1 -#endif - -#endif - - -#if !LUA_USE_CTYPE /* { */ - -#include - -#include "llimits.h" - - -#define ALPHABIT 0 -#define DIGITBIT 1 -#define PRINTBIT 2 -#define SPACEBIT 3 -#define XDIGITBIT 4 - - -#define MASK(B) (1 << (B)) - - -/* -** add 1 to char to allow index -1 (EOZ) -*/ -#define testprop(c,p) (luai_ctype_[(c)+1] & (p)) - -/* -** 'lalpha' (Lua alphabetic) and 'lalnum' (Lua alphanumeric) both include '_' -*/ -#define lislalpha(c) testprop(c, MASK(ALPHABIT)) -#define lislalnum(c) testprop(c, (MASK(ALPHABIT) | MASK(DIGITBIT))) -#define lisdigit(c) testprop(c, MASK(DIGITBIT)) -#define lisspace(c) testprop(c, MASK(SPACEBIT)) -#define lisprint(c) testprop(c, MASK(PRINTBIT)) -#define lisxdigit(c) testprop(c, MASK(XDIGITBIT)) - -/* -** this 'ltolower' only works for alphabetic characters -*/ -#define ltolower(c) ((c) | ('A' ^ 'a')) - - -/* two more entries for 0 and -1 (EOZ) */ -LUAI_DDEC const lu_byte luai_ctype_[UCHAR_MAX + 2]; - - -#else /* }{ */ - -/* -** use standard C ctypes -*/ - -#include - - -#define lislalpha(c) (isalpha(c) || (c) == '_') -#define lislalnum(c) (isalnum(c) || (c) == '_') -#define lisdigit(c) (isdigit(c)) -#define lisspace(c) (isspace(c)) -#define lisprint(c) (isprint(c)) -#define lisxdigit(c) (isxdigit(c)) - -#define ltolower(c) (tolower(c)) - -#endif /* } */ - -#endif - diff --git a/deps/rcheevos/test/lua/src/ldblib.c b/deps/rcheevos/test/lua/src/ldblib.c deleted file mode 100644 index 786f6cd95d..0000000000 --- a/deps/rcheevos/test/lua/src/ldblib.c +++ /dev/null @@ -1,456 +0,0 @@ -/* -** $Id: ldblib.c,v 1.151 2015/11/23 11:29:43 roberto Exp $ -** Interface from Lua to its debug API -** See Copyright Notice in lua.h -*/ - -#define ldblib_c -#define LUA_LIB - -#include "lprefix.h" - - -#include -#include -#include - -#include "lua.h" - -#include "lauxlib.h" -#include "lualib.h" - - -/* -** The hook table at registry[&HOOKKEY] maps threads to their current -** hook function. (We only need the unique address of 'HOOKKEY'.) -*/ -static const int HOOKKEY = 0; - - -/* -** If L1 != L, L1 can be in any state, and therefore there are no -** guarantees about its stack space; any push in L1 must be -** checked. -*/ -static void checkstack (lua_State *L, lua_State *L1, int n) { - if (L != L1 && !lua_checkstack(L1, n)) - luaL_error(L, "stack overflow"); -} - - -static int db_getregistry (lua_State *L) { - lua_pushvalue(L, LUA_REGISTRYINDEX); - return 1; -} - - -static int db_getmetatable (lua_State *L) { - luaL_checkany(L, 1); - if (!lua_getmetatable(L, 1)) { - lua_pushnil(L); /* no metatable */ - } - return 1; -} - - -static int db_setmetatable (lua_State *L) { - int t = lua_type(L, 2); - luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2, - "nil or table expected"); - lua_settop(L, 2); - lua_setmetatable(L, 1); - return 1; /* return 1st argument */ -} - - -static int db_getuservalue (lua_State *L) { - if (lua_type(L, 1) != LUA_TUSERDATA) - lua_pushnil(L); - else - lua_getuservalue(L, 1); - return 1; -} - - -static int db_setuservalue (lua_State *L) { - luaL_checktype(L, 1, LUA_TUSERDATA); - luaL_checkany(L, 2); - lua_settop(L, 2); - lua_setuservalue(L, 1); - return 1; -} - - -/* -** Auxiliary function used by several library functions: check for -** an optional thread as function's first argument and set 'arg' with -** 1 if this argument is present (so that functions can skip it to -** access their other arguments) -*/ -static lua_State *getthread (lua_State *L, int *arg) { - if (lua_isthread(L, 1)) { - *arg = 1; - return lua_tothread(L, 1); - } - else { - *arg = 0; - return L; /* function will operate over current thread */ - } -} - - -/* -** Variations of 'lua_settable', used by 'db_getinfo' to put results -** from 'lua_getinfo' into result table. Key is always a string; -** value can be a string, an int, or a boolean. -*/ -static void settabss (lua_State *L, const char *k, const char *v) { - lua_pushstring(L, v); - lua_setfield(L, -2, k); -} - -static void settabsi (lua_State *L, const char *k, int v) { - lua_pushinteger(L, v); - lua_setfield(L, -2, k); -} - -static void settabsb (lua_State *L, const char *k, int v) { - lua_pushboolean(L, v); - lua_setfield(L, -2, k); -} - - -/* -** In function 'db_getinfo', the call to 'lua_getinfo' may push -** results on the stack; later it creates the result table to put -** these objects. Function 'treatstackoption' puts the result from -** 'lua_getinfo' on top of the result table so that it can call -** 'lua_setfield'. -*/ -static void treatstackoption (lua_State *L, lua_State *L1, const char *fname) { - if (L == L1) - lua_rotate(L, -2, 1); /* exchange object and table */ - else - lua_xmove(L1, L, 1); /* move object to the "main" stack */ - lua_setfield(L, -2, fname); /* put object into table */ -} - - -/* -** Calls 'lua_getinfo' and collects all results in a new table. -** L1 needs stack space for an optional input (function) plus -** two optional outputs (function and line table) from function -** 'lua_getinfo'. -*/ -static int db_getinfo (lua_State *L) { - lua_Debug ar; - int arg; - lua_State *L1 = getthread(L, &arg); - const char *options = luaL_optstring(L, arg+2, "flnStu"); - checkstack(L, L1, 3); - if (lua_isfunction(L, arg + 1)) { /* info about a function? */ - options = lua_pushfstring(L, ">%s", options); /* add '>' to 'options' */ - lua_pushvalue(L, arg + 1); /* move function to 'L1' stack */ - lua_xmove(L, L1, 1); - } - else { /* stack level */ - if (!lua_getstack(L1, (int)luaL_checkinteger(L, arg + 1), &ar)) { - lua_pushnil(L); /* level out of range */ - return 1; - } - } - if (!lua_getinfo(L1, options, &ar)) - return luaL_argerror(L, arg+2, "invalid option"); - lua_newtable(L); /* table to collect results */ - if (strchr(options, 'S')) { - settabss(L, "source", ar.source); - settabss(L, "short_src", ar.short_src); - settabsi(L, "linedefined", ar.linedefined); - settabsi(L, "lastlinedefined", ar.lastlinedefined); - settabss(L, "what", ar.what); - } - if (strchr(options, 'l')) - settabsi(L, "currentline", ar.currentline); - if (strchr(options, 'u')) { - settabsi(L, "nups", ar.nups); - settabsi(L, "nparams", ar.nparams); - settabsb(L, "isvararg", ar.isvararg); - } - if (strchr(options, 'n')) { - settabss(L, "name", ar.name); - settabss(L, "namewhat", ar.namewhat); - } - if (strchr(options, 't')) - settabsb(L, "istailcall", ar.istailcall); - if (strchr(options, 'L')) - treatstackoption(L, L1, "activelines"); - if (strchr(options, 'f')) - treatstackoption(L, L1, "func"); - return 1; /* return table */ -} - - -static int db_getlocal (lua_State *L) { - int arg; - lua_State *L1 = getthread(L, &arg); - lua_Debug ar; - const char *name; - int nvar = (int)luaL_checkinteger(L, arg + 2); /* local-variable index */ - if (lua_isfunction(L, arg + 1)) { /* function argument? */ - lua_pushvalue(L, arg + 1); /* push function */ - lua_pushstring(L, lua_getlocal(L, NULL, nvar)); /* push local name */ - return 1; /* return only name (there is no value) */ - } - else { /* stack-level argument */ - int level = (int)luaL_checkinteger(L, arg + 1); - if (!lua_getstack(L1, level, &ar)) /* out of range? */ - return luaL_argerror(L, arg+1, "level out of range"); - checkstack(L, L1, 1); - name = lua_getlocal(L1, &ar, nvar); - if (name) { - lua_xmove(L1, L, 1); /* move local value */ - lua_pushstring(L, name); /* push name */ - lua_rotate(L, -2, 1); /* re-order */ - return 2; - } - else { - lua_pushnil(L); /* no name (nor value) */ - return 1; - } - } -} - - -static int db_setlocal (lua_State *L) { - int arg; - const char *name; - lua_State *L1 = getthread(L, &arg); - lua_Debug ar; - int level = (int)luaL_checkinteger(L, arg + 1); - int nvar = (int)luaL_checkinteger(L, arg + 2); - if (!lua_getstack(L1, level, &ar)) /* out of range? */ - return luaL_argerror(L, arg+1, "level out of range"); - luaL_checkany(L, arg+3); - lua_settop(L, arg+3); - checkstack(L, L1, 1); - lua_xmove(L, L1, 1); - name = lua_setlocal(L1, &ar, nvar); - if (name == NULL) - lua_pop(L1, 1); /* pop value (if not popped by 'lua_setlocal') */ - lua_pushstring(L, name); - return 1; -} - - -/* -** get (if 'get' is true) or set an upvalue from a closure -*/ -static int auxupvalue (lua_State *L, int get) { - const char *name; - int n = (int)luaL_checkinteger(L, 2); /* upvalue index */ - luaL_checktype(L, 1, LUA_TFUNCTION); /* closure */ - name = get ? lua_getupvalue(L, 1, n) : lua_setupvalue(L, 1, n); - if (name == NULL) return 0; - lua_pushstring(L, name); - lua_insert(L, -(get+1)); /* no-op if get is false */ - return get + 1; -} - - -static int db_getupvalue (lua_State *L) { - return auxupvalue(L, 1); -} - - -static int db_setupvalue (lua_State *L) { - luaL_checkany(L, 3); - return auxupvalue(L, 0); -} - - -/* -** Check whether a given upvalue from a given closure exists and -** returns its index -*/ -static int checkupval (lua_State *L, int argf, int argnup) { - int nup = (int)luaL_checkinteger(L, argnup); /* upvalue index */ - luaL_checktype(L, argf, LUA_TFUNCTION); /* closure */ - luaL_argcheck(L, (lua_getupvalue(L, argf, nup) != NULL), argnup, - "invalid upvalue index"); - return nup; -} - - -static int db_upvalueid (lua_State *L) { - int n = checkupval(L, 1, 2); - lua_pushlightuserdata(L, lua_upvalueid(L, 1, n)); - return 1; -} - - -static int db_upvaluejoin (lua_State *L) { - int n1 = checkupval(L, 1, 2); - int n2 = checkupval(L, 3, 4); - luaL_argcheck(L, !lua_iscfunction(L, 1), 1, "Lua function expected"); - luaL_argcheck(L, !lua_iscfunction(L, 3), 3, "Lua function expected"); - lua_upvaluejoin(L, 1, n1, 3, n2); - return 0; -} - - -/* -** Call hook function registered at hook table for the current -** thread (if there is one) -*/ -static void hookf (lua_State *L, lua_Debug *ar) { - static const char *const hooknames[] = - {"call", "return", "line", "count", "tail call"}; - lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY); - lua_pushthread(L); - if (lua_rawget(L, -2) == LUA_TFUNCTION) { /* is there a hook function? */ - lua_pushstring(L, hooknames[(int)ar->event]); /* push event name */ - if (ar->currentline >= 0) - lua_pushinteger(L, ar->currentline); /* push current line */ - else lua_pushnil(L); - lua_assert(lua_getinfo(L, "lS", ar)); - lua_call(L, 2, 0); /* call hook function */ - } -} - - -/* -** Convert a string mask (for 'sethook') into a bit mask -*/ -static int makemask (const char *smask, int count) { - int mask = 0; - if (strchr(smask, 'c')) mask |= LUA_MASKCALL; - if (strchr(smask, 'r')) mask |= LUA_MASKRET; - if (strchr(smask, 'l')) mask |= LUA_MASKLINE; - if (count > 0) mask |= LUA_MASKCOUNT; - return mask; -} - - -/* -** Convert a bit mask (for 'gethook') into a string mask -*/ -static char *unmakemask (int mask, char *smask) { - int i = 0; - if (mask & LUA_MASKCALL) smask[i++] = 'c'; - if (mask & LUA_MASKRET) smask[i++] = 'r'; - if (mask & LUA_MASKLINE) smask[i++] = 'l'; - smask[i] = '\0'; - return smask; -} - - -static int db_sethook (lua_State *L) { - int arg, mask, count; - lua_Hook func; - lua_State *L1 = getthread(L, &arg); - if (lua_isnoneornil(L, arg+1)) { /* no hook? */ - lua_settop(L, arg+1); - func = NULL; mask = 0; count = 0; /* turn off hooks */ - } - else { - const char *smask = luaL_checkstring(L, arg+2); - luaL_checktype(L, arg+1, LUA_TFUNCTION); - count = (int)luaL_optinteger(L, arg + 3, 0); - func = hookf; mask = makemask(smask, count); - } - if (lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY) == LUA_TNIL) { - lua_createtable(L, 0, 2); /* create a hook table */ - lua_pushvalue(L, -1); - lua_rawsetp(L, LUA_REGISTRYINDEX, &HOOKKEY); /* set it in position */ - lua_pushstring(L, "k"); - lua_setfield(L, -2, "__mode"); /** hooktable.__mode = "k" */ - lua_pushvalue(L, -1); - lua_setmetatable(L, -2); /* setmetatable(hooktable) = hooktable */ - } - checkstack(L, L1, 1); - lua_pushthread(L1); lua_xmove(L1, L, 1); /* key (thread) */ - lua_pushvalue(L, arg + 1); /* value (hook function) */ - lua_rawset(L, -3); /* hooktable[L1] = new Lua hook */ - lua_sethook(L1, func, mask, count); - return 0; -} - - -static int db_gethook (lua_State *L) { - int arg; - lua_State *L1 = getthread(L, &arg); - char buff[5]; - int mask = lua_gethookmask(L1); - lua_Hook hook = lua_gethook(L1); - if (hook == NULL) /* no hook? */ - lua_pushnil(L); - else if (hook != hookf) /* external hook? */ - lua_pushliteral(L, "external hook"); - else { /* hook table must exist */ - lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY); - checkstack(L, L1, 1); - lua_pushthread(L1); lua_xmove(L1, L, 1); - lua_rawget(L, -2); /* 1st result = hooktable[L1] */ - lua_remove(L, -2); /* remove hook table */ - } - lua_pushstring(L, unmakemask(mask, buff)); /* 2nd result = mask */ - lua_pushinteger(L, lua_gethookcount(L1)); /* 3rd result = count */ - return 3; -} - - -static int db_debug (lua_State *L) { - for (;;) { - char buffer[250]; - lua_writestringerror("%s", "lua_debug> "); - if (fgets(buffer, sizeof(buffer), stdin) == 0 || - strcmp(buffer, "cont\n") == 0) - return 0; - if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") || - lua_pcall(L, 0, 0, 0)) - lua_writestringerror("%s\n", lua_tostring(L, -1)); - lua_settop(L, 0); /* remove eventual returns */ - } -} - - -static int db_traceback (lua_State *L) { - int arg; - lua_State *L1 = getthread(L, &arg); - const char *msg = lua_tostring(L, arg + 1); - if (msg == NULL && !lua_isnoneornil(L, arg + 1)) /* non-string 'msg'? */ - lua_pushvalue(L, arg + 1); /* return it untouched */ - else { - int level = (int)luaL_optinteger(L, arg + 2, (L == L1) ? 1 : 0); - luaL_traceback(L, L1, msg, level); - } - return 1; -} - - -static const luaL_Reg dblib[] = { - {"debug", db_debug}, - {"getuservalue", db_getuservalue}, - {"gethook", db_gethook}, - {"getinfo", db_getinfo}, - {"getlocal", db_getlocal}, - {"getregistry", db_getregistry}, - {"getmetatable", db_getmetatable}, - {"getupvalue", db_getupvalue}, - {"upvaluejoin", db_upvaluejoin}, - {"upvalueid", db_upvalueid}, - {"setuservalue", db_setuservalue}, - {"sethook", db_sethook}, - {"setlocal", db_setlocal}, - {"setmetatable", db_setmetatable}, - {"setupvalue", db_setupvalue}, - {"traceback", db_traceback}, - {NULL, NULL} -}; - - -LUAMOD_API int luaopen_debug (lua_State *L) { - luaL_newlib(L, dblib); - return 1; -} - diff --git a/deps/rcheevos/test/lua/src/ldebug.c b/deps/rcheevos/test/lua/src/ldebug.c deleted file mode 100644 index 4a98cd4116..0000000000 --- a/deps/rcheevos/test/lua/src/ldebug.c +++ /dev/null @@ -1,698 +0,0 @@ -/* -** $Id: ldebug.c,v 2.121 2016/10/19 12:32:10 roberto Exp $ -** Debug Interface -** See Copyright Notice in lua.h -*/ - -#define ldebug_c -#define LUA_CORE - -#include "lprefix.h" - - -#include -#include -#include - -#include "lua.h" - -#include "lapi.h" -#include "lcode.h" -#include "ldebug.h" -#include "ldo.h" -#include "lfunc.h" -#include "lobject.h" -#include "lopcodes.h" -#include "lstate.h" -#include "lstring.h" -#include "ltable.h" -#include "ltm.h" -#include "lvm.h" - - - -#define noLuaClosure(f) ((f) == NULL || (f)->c.tt == LUA_TCCL) - - -/* Active Lua function (given call info) */ -#define ci_func(ci) (clLvalue((ci)->func)) - - -static const char *funcnamefromcode (lua_State *L, CallInfo *ci, - const char **name); - - -static int currentpc (CallInfo *ci) { - lua_assert(isLua(ci)); - return pcRel(ci->u.l.savedpc, ci_func(ci)->p); -} - - -static int currentline (CallInfo *ci) { - return getfuncline(ci_func(ci)->p, currentpc(ci)); -} - - -/* -** If function yielded, its 'func' can be in the 'extra' field. The -** next function restores 'func' to its correct value for debugging -** purposes. (It exchanges 'func' and 'extra'; so, when called again, -** after debugging, it also "re-restores" ** 'func' to its altered value. -*/ -static void swapextra (lua_State *L) { - if (L->status == LUA_YIELD) { - CallInfo *ci = L->ci; /* get function that yielded */ - StkId temp = ci->func; /* exchange its 'func' and 'extra' values */ - ci->func = restorestack(L, ci->extra); - ci->extra = savestack(L, temp); - } -} - - -/* -** This function can be called asynchronously (e.g. during a signal). -** Fields 'oldpc', 'basehookcount', and 'hookcount' (set by -** 'resethookcount') are for debug only, and it is no problem if they -** get arbitrary values (causes at most one wrong hook call). 'hookmask' -** is an atomic value. We assume that pointers are atomic too (e.g., gcc -** ensures that for all platforms where it runs). Moreover, 'hook' is -** always checked before being called (see 'luaD_hook'). -*/ -LUA_API void lua_sethook (lua_State *L, lua_Hook func, int mask, int count) { - if (func == NULL || mask == 0) { /* turn off hooks? */ - mask = 0; - func = NULL; - } - if (isLua(L->ci)) - L->oldpc = L->ci->u.l.savedpc; - L->hook = func; - L->basehookcount = count; - resethookcount(L); - L->hookmask = cast_byte(mask); -} - - -LUA_API lua_Hook lua_gethook (lua_State *L) { - return L->hook; -} - - -LUA_API int lua_gethookmask (lua_State *L) { - return L->hookmask; -} - - -LUA_API int lua_gethookcount (lua_State *L) { - return L->basehookcount; -} - - -LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar) { - int status; - CallInfo *ci; - if (level < 0) return 0; /* invalid (negative) level */ - lua_lock(L); - for (ci = L->ci; level > 0 && ci != &L->base_ci; ci = ci->previous) - level--; - if (level == 0 && ci != &L->base_ci) { /* level found? */ - status = 1; - ar->i_ci = ci; - } - else status = 0; /* no such level */ - lua_unlock(L); - return status; -} - - -static const char *upvalname (Proto *p, int uv) { - TString *s = check_exp(uv < p->sizeupvalues, p->upvalues[uv].name); - if (s == NULL) return "?"; - else return getstr(s); -} - - -static const char *findvararg (CallInfo *ci, int n, StkId *pos) { - int nparams = clLvalue(ci->func)->p->numparams; - if (n >= cast_int(ci->u.l.base - ci->func) - nparams) - return NULL; /* no such vararg */ - else { - *pos = ci->func + nparams + n; - return "(*vararg)"; /* generic name for any vararg */ - } -} - - -static const char *findlocal (lua_State *L, CallInfo *ci, int n, - StkId *pos) { - const char *name = NULL; - StkId base; - if (isLua(ci)) { - if (n < 0) /* access to vararg values? */ - return findvararg(ci, -n, pos); - else { - base = ci->u.l.base; - name = luaF_getlocalname(ci_func(ci)->p, n, currentpc(ci)); - } - } - else - base = ci->func + 1; - if (name == NULL) { /* no 'standard' name? */ - StkId limit = (ci == L->ci) ? L->top : ci->next->func; - if (limit - base >= n && n > 0) /* is 'n' inside 'ci' stack? */ - name = "(*temporary)"; /* generic name for any valid slot */ - else - return NULL; /* no name */ - } - *pos = base + (n - 1); - return name; -} - - -LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n) { - const char *name; - lua_lock(L); - swapextra(L); - if (ar == NULL) { /* information about non-active function? */ - if (!isLfunction(L->top - 1)) /* not a Lua function? */ - name = NULL; - else /* consider live variables at function start (parameters) */ - name = luaF_getlocalname(clLvalue(L->top - 1)->p, n, 0); - } - else { /* active function; get information through 'ar' */ - StkId pos = NULL; /* to avoid warnings */ - name = findlocal(L, ar->i_ci, n, &pos); - if (name) { - setobj2s(L, L->top, pos); - api_incr_top(L); - } - } - swapextra(L); - lua_unlock(L); - return name; -} - - -LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n) { - StkId pos = NULL; /* to avoid warnings */ - const char *name; - lua_lock(L); - swapextra(L); - name = findlocal(L, ar->i_ci, n, &pos); - if (name) { - setobjs2s(L, pos, L->top - 1); - L->top--; /* pop value */ - } - swapextra(L); - lua_unlock(L); - return name; -} - - -static void funcinfo (lua_Debug *ar, Closure *cl) { - if (noLuaClosure(cl)) { - ar->source = "=[C]"; - ar->linedefined = -1; - ar->lastlinedefined = -1; - ar->what = "C"; - } - else { - Proto *p = cl->l.p; - ar->source = p->source ? getstr(p->source) : "=?"; - ar->linedefined = p->linedefined; - ar->lastlinedefined = p->lastlinedefined; - ar->what = (ar->linedefined == 0) ? "main" : "Lua"; - } - luaO_chunkid(ar->short_src, ar->source, LUA_IDSIZE); -} - - -static void collectvalidlines (lua_State *L, Closure *f) { - if (noLuaClosure(f)) { - setnilvalue(L->top); - api_incr_top(L); - } - else { - int i; - TValue v; - int *lineinfo = f->l.p->lineinfo; - Table *t = luaH_new(L); /* new table to store active lines */ - sethvalue(L, L->top, t); /* push it on stack */ - api_incr_top(L); - setbvalue(&v, 1); /* boolean 'true' to be the value of all indices */ - for (i = 0; i < f->l.p->sizelineinfo; i++) /* for all lines with code */ - luaH_setint(L, t, lineinfo[i], &v); /* table[line] = true */ - } -} - - -static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) { - if (ci == NULL) /* no 'ci'? */ - return NULL; /* no info */ - else if (ci->callstatus & CIST_FIN) { /* is this a finalizer? */ - *name = "__gc"; - return "metamethod"; /* report it as such */ - } - /* calling function is a known Lua function? */ - else if (!(ci->callstatus & CIST_TAIL) && isLua(ci->previous)) - return funcnamefromcode(L, ci->previous, name); - else return NULL; /* no way to find a name */ -} - - -static int auxgetinfo (lua_State *L, const char *what, lua_Debug *ar, - Closure *f, CallInfo *ci) { - int status = 1; - for (; *what; what++) { - switch (*what) { - case 'S': { - funcinfo(ar, f); - break; - } - case 'l': { - ar->currentline = (ci && isLua(ci)) ? currentline(ci) : -1; - break; - } - case 'u': { - ar->nups = (f == NULL) ? 0 : f->c.nupvalues; - if (noLuaClosure(f)) { - ar->isvararg = 1; - ar->nparams = 0; - } - else { - ar->isvararg = f->l.p->is_vararg; - ar->nparams = f->l.p->numparams; - } - break; - } - case 't': { - ar->istailcall = (ci) ? ci->callstatus & CIST_TAIL : 0; - break; - } - case 'n': { - ar->namewhat = getfuncname(L, ci, &ar->name); - if (ar->namewhat == NULL) { - ar->namewhat = ""; /* not found */ - ar->name = NULL; - } - break; - } - case 'L': - case 'f': /* handled by lua_getinfo */ - break; - default: status = 0; /* invalid option */ - } - } - return status; -} - - -LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar) { - int status; - Closure *cl; - CallInfo *ci; - StkId func; - lua_lock(L); - swapextra(L); - if (*what == '>') { - ci = NULL; - func = L->top - 1; - api_check(L, ttisfunction(func), "function expected"); - what++; /* skip the '>' */ - L->top--; /* pop function */ - } - else { - ci = ar->i_ci; - func = ci->func; - lua_assert(ttisfunction(ci->func)); - } - cl = ttisclosure(func) ? clvalue(func) : NULL; - status = auxgetinfo(L, what, ar, cl, ci); - if (strchr(what, 'f')) { - setobjs2s(L, L->top, func); - api_incr_top(L); - } - swapextra(L); /* correct before option 'L', which can raise a mem. error */ - if (strchr(what, 'L')) - collectvalidlines(L, cl); - lua_unlock(L); - return status; -} - - -/* -** {====================================================== -** Symbolic Execution -** ======================================================= -*/ - -static const char *getobjname (Proto *p, int lastpc, int reg, - const char **name); - - -/* -** find a "name" for the RK value 'c' -*/ -static void kname (Proto *p, int pc, int c, const char **name) { - if (ISK(c)) { /* is 'c' a constant? */ - TValue *kvalue = &p->k[INDEXK(c)]; - if (ttisstring(kvalue)) { /* literal constant? */ - *name = svalue(kvalue); /* it is its own name */ - return; - } - /* else no reasonable name found */ - } - else { /* 'c' is a register */ - const char *what = getobjname(p, pc, c, name); /* search for 'c' */ - if (what && *what == 'c') { /* found a constant name? */ - return; /* 'name' already filled */ - } - /* else no reasonable name found */ - } - *name = "?"; /* no reasonable name found */ -} - - -static int filterpc (int pc, int jmptarget) { - if (pc < jmptarget) /* is code conditional (inside a jump)? */ - return -1; /* cannot know who sets that register */ - else return pc; /* current position sets that register */ -} - - -/* -** try to find last instruction before 'lastpc' that modified register 'reg' -*/ -static int findsetreg (Proto *p, int lastpc, int reg) { - int pc; - int setreg = -1; /* keep last instruction that changed 'reg' */ - int jmptarget = 0; /* any code before this address is conditional */ - for (pc = 0; pc < lastpc; pc++) { - Instruction i = p->code[pc]; - OpCode op = GET_OPCODE(i); - int a = GETARG_A(i); - switch (op) { - case OP_LOADNIL: { - int b = GETARG_B(i); - if (a <= reg && reg <= a + b) /* set registers from 'a' to 'a+b' */ - setreg = filterpc(pc, jmptarget); - break; - } - case OP_TFORCALL: { - if (reg >= a + 2) /* affect all regs above its base */ - setreg = filterpc(pc, jmptarget); - break; - } - case OP_CALL: - case OP_TAILCALL: { - if (reg >= a) /* affect all registers above base */ - setreg = filterpc(pc, jmptarget); - break; - } - case OP_JMP: { - int b = GETARG_sBx(i); - int dest = pc + 1 + b; - /* jump is forward and do not skip 'lastpc'? */ - if (pc < dest && dest <= lastpc) { - if (dest > jmptarget) - jmptarget = dest; /* update 'jmptarget' */ - } - break; - } - default: - if (testAMode(op) && reg == a) /* any instruction that set A */ - setreg = filterpc(pc, jmptarget); - break; - } - } - return setreg; -} - - -static const char *getobjname (Proto *p, int lastpc, int reg, - const char **name) { - int pc; - *name = luaF_getlocalname(p, reg + 1, lastpc); - if (*name) /* is a local? */ - return "local"; - /* else try symbolic execution */ - pc = findsetreg(p, lastpc, reg); - if (pc != -1) { /* could find instruction? */ - Instruction i = p->code[pc]; - OpCode op = GET_OPCODE(i); - switch (op) { - case OP_MOVE: { - int b = GETARG_B(i); /* move from 'b' to 'a' */ - if (b < GETARG_A(i)) - return getobjname(p, pc, b, name); /* get name for 'b' */ - break; - } - case OP_GETTABUP: - case OP_GETTABLE: { - int k = GETARG_C(i); /* key index */ - int t = GETARG_B(i); /* table index */ - const char *vn = (op == OP_GETTABLE) /* name of indexed variable */ - ? luaF_getlocalname(p, t + 1, pc) - : upvalname(p, t); - kname(p, pc, k, name); - return (vn && strcmp(vn, LUA_ENV) == 0) ? "global" : "field"; - } - case OP_GETUPVAL: { - *name = upvalname(p, GETARG_B(i)); - return "upvalue"; - } - case OP_LOADK: - case OP_LOADKX: { - int b = (op == OP_LOADK) ? GETARG_Bx(i) - : GETARG_Ax(p->code[pc + 1]); - if (ttisstring(&p->k[b])) { - *name = svalue(&p->k[b]); - return "constant"; - } - break; - } - case OP_SELF: { - int k = GETARG_C(i); /* key index */ - kname(p, pc, k, name); - return "method"; - } - default: break; /* go through to return NULL */ - } - } - return NULL; /* could not find reasonable name */ -} - - -/* -** Try to find a name for a function based on the code that called it. -** (Only works when function was called by a Lua function.) -** Returns what the name is (e.g., "for iterator", "method", -** "metamethod") and sets '*name' to point to the name. -*/ -static const char *funcnamefromcode (lua_State *L, CallInfo *ci, - const char **name) { - TMS tm = (TMS)0; /* (initial value avoids warnings) */ - Proto *p = ci_func(ci)->p; /* calling function */ - int pc = currentpc(ci); /* calling instruction index */ - Instruction i = p->code[pc]; /* calling instruction */ - if (ci->callstatus & CIST_HOOKED) { /* was it called inside a hook? */ - *name = "?"; - return "hook"; - } - switch (GET_OPCODE(i)) { - case OP_CALL: - case OP_TAILCALL: - return getobjname(p, pc, GETARG_A(i), name); /* get function name */ - case OP_TFORCALL: { /* for iterator */ - *name = "for iterator"; - return "for iterator"; - } - /* other instructions can do calls through metamethods */ - case OP_SELF: case OP_GETTABUP: case OP_GETTABLE: - tm = TM_INDEX; - break; - case OP_SETTABUP: case OP_SETTABLE: - tm = TM_NEWINDEX; - break; - case OP_ADD: case OP_SUB: case OP_MUL: case OP_MOD: - case OP_POW: case OP_DIV: case OP_IDIV: case OP_BAND: - case OP_BOR: case OP_BXOR: case OP_SHL: case OP_SHR: { - int offset = cast_int(GET_OPCODE(i)) - cast_int(OP_ADD); /* ORDER OP */ - tm = cast(TMS, offset + cast_int(TM_ADD)); /* ORDER TM */ - break; - } - case OP_UNM: tm = TM_UNM; break; - case OP_BNOT: tm = TM_BNOT; break; - case OP_LEN: tm = TM_LEN; break; - case OP_CONCAT: tm = TM_CONCAT; break; - case OP_EQ: tm = TM_EQ; break; - case OP_LT: tm = TM_LT; break; - case OP_LE: tm = TM_LE; break; - default: - return NULL; /* cannot find a reasonable name */ - } - *name = getstr(G(L)->tmname[tm]); - return "metamethod"; -} - -/* }====================================================== */ - - - -/* -** The subtraction of two potentially unrelated pointers is -** not ISO C, but it should not crash a program; the subsequent -** checks are ISO C and ensure a correct result. -*/ -static int isinstack (CallInfo *ci, const TValue *o) { - ptrdiff_t i = o - ci->u.l.base; - return (0 <= i && i < (ci->top - ci->u.l.base) && ci->u.l.base + i == o); -} - - -/* -** Checks whether value 'o' came from an upvalue. (That can only happen -** with instructions OP_GETTABUP/OP_SETTABUP, which operate directly on -** upvalues.) -*/ -static const char *getupvalname (CallInfo *ci, const TValue *o, - const char **name) { - LClosure *c = ci_func(ci); - int i; - for (i = 0; i < c->nupvalues; i++) { - if (c->upvals[i]->v == o) { - *name = upvalname(c->p, i); - return "upvalue"; - } - } - return NULL; -} - - -static const char *varinfo (lua_State *L, const TValue *o) { - const char *name = NULL; /* to avoid warnings */ - CallInfo *ci = L->ci; - const char *kind = NULL; - if (isLua(ci)) { - kind = getupvalname(ci, o, &name); /* check whether 'o' is an upvalue */ - if (!kind && isinstack(ci, o)) /* no? try a register */ - kind = getobjname(ci_func(ci)->p, currentpc(ci), - cast_int(o - ci->u.l.base), &name); - } - return (kind) ? luaO_pushfstring(L, " (%s '%s')", kind, name) : ""; -} - - -l_noret luaG_typeerror (lua_State *L, const TValue *o, const char *op) { - const char *t = luaT_objtypename(L, o); - luaG_runerror(L, "attempt to %s a %s value%s", op, t, varinfo(L, o)); -} - - -l_noret luaG_concaterror (lua_State *L, const TValue *p1, const TValue *p2) { - if (ttisstring(p1) || cvt2str(p1)) p1 = p2; - luaG_typeerror(L, p1, "concatenate"); -} - - -l_noret luaG_opinterror (lua_State *L, const TValue *p1, - const TValue *p2, const char *msg) { - lua_Number temp; - if (!tonumber(p1, &temp)) /* first operand is wrong? */ - p2 = p1; /* now second is wrong */ - luaG_typeerror(L, p2, msg); -} - - -/* -** Error when both values are convertible to numbers, but not to integers -*/ -l_noret luaG_tointerror (lua_State *L, const TValue *p1, const TValue *p2) { - lua_Integer temp; - if (!tointeger(p1, &temp)) - p2 = p1; - luaG_runerror(L, "number%s has no integer representation", varinfo(L, p2)); -} - - -l_noret luaG_ordererror (lua_State *L, const TValue *p1, const TValue *p2) { - const char *t1 = luaT_objtypename(L, p1); - const char *t2 = luaT_objtypename(L, p2); - if (strcmp(t1, t2) == 0) - luaG_runerror(L, "attempt to compare two %s values", t1); - else - luaG_runerror(L, "attempt to compare %s with %s", t1, t2); -} - - -/* add src:line information to 'msg' */ -const char *luaG_addinfo (lua_State *L, const char *msg, TString *src, - int line) { - char buff[LUA_IDSIZE]; - if (src) - luaO_chunkid(buff, getstr(src), LUA_IDSIZE); - else { /* no source available; use "?" instead */ - buff[0] = '?'; buff[1] = '\0'; - } - return luaO_pushfstring(L, "%s:%d: %s", buff, line, msg); -} - - -l_noret luaG_errormsg (lua_State *L) { - if (L->errfunc != 0) { /* is there an error handling function? */ - StkId errfunc = restorestack(L, L->errfunc); - setobjs2s(L, L->top, L->top - 1); /* move argument */ - setobjs2s(L, L->top - 1, errfunc); /* push function */ - L->top++; /* assume EXTRC_STACK */ - luaD_callnoyield(L, L->top - 2, 1); /* call it */ - } - luaD_throw(L, LUA_ERRRUN); -} - - -l_noret luaG_runerror (lua_State *L, const char *fmt, ...) { - CallInfo *ci = L->ci; - const char *msg; - va_list argp; - va_start(argp, fmt); - msg = luaO_pushvfstring(L, fmt, argp); /* format message */ - va_end(argp); - if (isLua(ci)) /* if Lua function, add source:line information */ - luaG_addinfo(L, msg, ci_func(ci)->p->source, currentline(ci)); - luaG_errormsg(L); -} - - -void luaG_traceexec (lua_State *L) { - CallInfo *ci = L->ci; - lu_byte mask = L->hookmask; - int counthook = (--L->hookcount == 0 && (mask & LUA_MASKCOUNT)); - if (counthook) - resethookcount(L); /* reset count */ - else if (!(mask & LUA_MASKLINE)) - return; /* no line hook and count != 0; nothing to be done */ - if (ci->callstatus & CIST_HOOKYIELD) { /* called hook last time? */ - ci->callstatus &= ~CIST_HOOKYIELD; /* erase mark */ - return; /* do not call hook again (VM yielded, so it did not move) */ - } - if (counthook) - luaD_hook(L, LUA_HOOKCOUNT, -1); /* call count hook */ - if (mask & LUA_MASKLINE) { - Proto *p = ci_func(ci)->p; - int npc = pcRel(ci->u.l.savedpc, p); - int newline = getfuncline(p, npc); - if (npc == 0 || /* call linehook when enter a new function, */ - ci->u.l.savedpc <= L->oldpc || /* when jump back (loop), or when */ - newline != getfuncline(p, pcRel(L->oldpc, p))) /* enter a new line */ - luaD_hook(L, LUA_HOOKLINE, newline); /* call line hook */ - } - L->oldpc = ci->u.l.savedpc; - if (L->status == LUA_YIELD) { /* did hook yield? */ - if (counthook) - L->hookcount = 1; /* undo decrement to zero */ - ci->u.l.savedpc--; /* undo increment (resume will increment it again) */ - ci->callstatus |= CIST_HOOKYIELD; /* mark that it yielded */ - ci->func = L->top - 1; /* protect stack below results */ - luaD_throw(L, LUA_YIELD); - } -} - diff --git a/deps/rcheevos/test/lua/src/ldebug.h b/deps/rcheevos/test/lua/src/ldebug.h deleted file mode 100644 index 0e31546b1b..0000000000 --- a/deps/rcheevos/test/lua/src/ldebug.h +++ /dev/null @@ -1,39 +0,0 @@ -/* -** $Id: ldebug.h,v 2.14 2015/05/22 17:45:56 roberto Exp $ -** Auxiliary functions from Debug Interface module -** See Copyright Notice in lua.h -*/ - -#ifndef ldebug_h -#define ldebug_h - - -#include "lstate.h" - - -#define pcRel(pc, p) (cast(int, (pc) - (p)->code) - 1) - -#define getfuncline(f,pc) (((f)->lineinfo) ? (f)->lineinfo[pc] : -1) - -#define resethookcount(L) (L->hookcount = L->basehookcount) - - -LUAI_FUNC l_noret luaG_typeerror (lua_State *L, const TValue *o, - const char *opname); -LUAI_FUNC l_noret luaG_concaterror (lua_State *L, const TValue *p1, - const TValue *p2); -LUAI_FUNC l_noret luaG_opinterror (lua_State *L, const TValue *p1, - const TValue *p2, - const char *msg); -LUAI_FUNC l_noret luaG_tointerror (lua_State *L, const TValue *p1, - const TValue *p2); -LUAI_FUNC l_noret luaG_ordererror (lua_State *L, const TValue *p1, - const TValue *p2); -LUAI_FUNC l_noret luaG_runerror (lua_State *L, const char *fmt, ...); -LUAI_FUNC const char *luaG_addinfo (lua_State *L, const char *msg, - TString *src, int line); -LUAI_FUNC l_noret luaG_errormsg (lua_State *L); -LUAI_FUNC void luaG_traceexec (lua_State *L); - - -#endif diff --git a/deps/rcheevos/test/lua/src/ldo.c b/deps/rcheevos/test/lua/src/ldo.c deleted file mode 100644 index 0a0132ce90..0000000000 --- a/deps/rcheevos/test/lua/src/ldo.c +++ /dev/null @@ -1,802 +0,0 @@ -/* -** $Id: ldo.c,v 2.157 2016/12/13 15:52:21 roberto Exp $ -** Stack and Call structure of Lua -** See Copyright Notice in lua.h -*/ - -#define ldo_c -#define LUA_CORE - -#include "lprefix.h" - - -#include -#include -#include - -#include "lua.h" - -#include "lapi.h" -#include "ldebug.h" -#include "ldo.h" -#include "lfunc.h" -#include "lgc.h" -#include "lmem.h" -#include "lobject.h" -#include "lopcodes.h" -#include "lparser.h" -#include "lstate.h" -#include "lstring.h" -#include "ltable.h" -#include "ltm.h" -#include "lundump.h" -#include "lvm.h" -#include "lzio.h" - - - -#define errorstatus(s) ((s) > LUA_YIELD) - - -/* -** {====================================================== -** Error-recovery functions -** ======================================================= -*/ - -/* -** LUAI_THROW/LUAI_TRY define how Lua does exception handling. By -** default, Lua handles errors with exceptions when compiling as -** C++ code, with _longjmp/_setjmp when asked to use them, and with -** longjmp/setjmp otherwise. -*/ -#if !defined(LUAI_THROW) /* { */ - -#if defined(__cplusplus) && !defined(LUA_USE_LONGJMP) /* { */ - -/* C++ exceptions */ -#define LUAI_THROW(L,c) throw(c) -#define LUAI_TRY(L,c,a) \ - try { a } catch(...) { if ((c)->status == 0) (c)->status = -1; } -#define luai_jmpbuf int /* dummy variable */ - -#elif defined(LUA_USE_POSIX) /* }{ */ - -/* in POSIX, try _longjmp/_setjmp (more efficient) */ -#define LUAI_THROW(L,c) _longjmp((c)->b, 1) -#define LUAI_TRY(L,c,a) if (_setjmp((c)->b) == 0) { a } -#define luai_jmpbuf jmp_buf - -#else /* }{ */ - -/* ISO C handling with long jumps */ -#define LUAI_THROW(L,c) longjmp((c)->b, 1) -#define LUAI_TRY(L,c,a) if (setjmp((c)->b) == 0) { a } -#define luai_jmpbuf jmp_buf - -#endif /* } */ - -#endif /* } */ - - - -/* chain list of long jump buffers */ -struct lua_longjmp { - struct lua_longjmp *previous; - luai_jmpbuf b; - volatile int status; /* error code */ -}; - - -static void seterrorobj (lua_State *L, int errcode, StkId oldtop) { - switch (errcode) { - case LUA_ERRMEM: { /* memory error? */ - setsvalue2s(L, oldtop, G(L)->memerrmsg); /* reuse preregistered msg. */ - break; - } - case LUA_ERRERR: { - setsvalue2s(L, oldtop, luaS_newliteral(L, "error in error handling")); - break; - } - default: { - setobjs2s(L, oldtop, L->top - 1); /* error message on current top */ - break; - } - } - L->top = oldtop + 1; -} - - -l_noret luaD_throw (lua_State *L, int errcode) { - if (L->errorJmp) { /* thread has an error handler? */ - L->errorJmp->status = errcode; /* set status */ - LUAI_THROW(L, L->errorJmp); /* jump to it */ - } - else { /* thread has no error handler */ - global_State *g = G(L); - L->status = cast_byte(errcode); /* mark it as dead */ - if (g->mainthread->errorJmp) { /* main thread has a handler? */ - setobjs2s(L, g->mainthread->top++, L->top - 1); /* copy error obj. */ - luaD_throw(g->mainthread, errcode); /* re-throw in main thread */ - } - else { /* no handler at all; abort */ - if (g->panic) { /* panic function? */ - seterrorobj(L, errcode, L->top); /* assume EXTRC_STACK */ - if (L->ci->top < L->top) - L->ci->top = L->top; /* pushing msg. can break this invariant */ - lua_unlock(L); - g->panic(L); /* call panic function (last chance to jump out) */ - } - abort(); - } - } -} - - -int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud) { - unsigned short oldnCcalls = L->nCcalls; - struct lua_longjmp lj; - lj.status = LUA_OK; - lj.previous = L->errorJmp; /* chain new error handler */ - L->errorJmp = &lj; - LUAI_TRY(L, &lj, - (*f)(L, ud); - ); - L->errorJmp = lj.previous; /* restore old error handler */ - L->nCcalls = oldnCcalls; - return lj.status; -} - -/* }====================================================== */ - - -/* -** {================================================================== -** Stack reallocation -** =================================================================== -*/ -static void correctstack (lua_State *L, TValue *oldstack) { - CallInfo *ci; - UpVal *up; - L->top = (L->top - oldstack) + L->stack; - for (up = L->openupval; up != NULL; up = up->u.open.next) - up->v = (up->v - oldstack) + L->stack; - for (ci = L->ci; ci != NULL; ci = ci->previous) { - ci->top = (ci->top - oldstack) + L->stack; - ci->func = (ci->func - oldstack) + L->stack; - if (isLua(ci)) - ci->u.l.base = (ci->u.l.base - oldstack) + L->stack; - } -} - - -/* some space for error handling */ -#define ERRORSTACKSIZE (LUAI_MAXSTACK + 200) - - -void luaD_reallocstack (lua_State *L, int newsize) { - TValue *oldstack = L->stack; - int lim = L->stacksize; - lua_assert(newsize <= LUAI_MAXSTACK || newsize == ERRORSTACKSIZE); - lua_assert(L->stack_last - L->stack == L->stacksize - EXTRC_STACK); - luaM_reallocvector(L, L->stack, L->stacksize, newsize, TValue); - for (; lim < newsize; lim++) - setnilvalue(L->stack + lim); /* erase new segment */ - L->stacksize = newsize; - L->stack_last = L->stack + newsize - EXTRC_STACK; - correctstack(L, oldstack); -} - - -void luaD_growstack (lua_State *L, int n) { - int size = L->stacksize; - if (size > LUAI_MAXSTACK) /* error after extra size? */ - luaD_throw(L, LUA_ERRERR); - else { - int needed = cast_int(L->top - L->stack) + n + EXTRC_STACK; - int newsize = 2 * size; - if (newsize > LUAI_MAXSTACK) newsize = LUAI_MAXSTACK; - if (newsize < needed) newsize = needed; - if (newsize > LUAI_MAXSTACK) { /* stack overflow? */ - luaD_reallocstack(L, ERRORSTACKSIZE); - luaG_runerror(L, "stack overflow"); - } - else - luaD_reallocstack(L, newsize); - } -} - - -static int stackinuse (lua_State *L) { - CallInfo *ci; - StkId lim = L->top; - for (ci = L->ci; ci != NULL; ci = ci->previous) { - if (lim < ci->top) lim = ci->top; - } - lua_assert(lim <= L->stack_last); - return cast_int(lim - L->stack) + 1; /* part of stack in use */ -} - - -void luaD_shrinkstack (lua_State *L) { - int inuse = stackinuse(L); - int goodsize = inuse + (inuse / 8) + 2*EXTRC_STACK; - if (goodsize > LUAI_MAXSTACK) - goodsize = LUAI_MAXSTACK; /* respect stack limit */ - if (L->stacksize > LUAI_MAXSTACK) /* had been handling stack overflow? */ - luaE_freeCI(L); /* free all CIs (list grew because of an error) */ - else - luaE_shrinkCI(L); /* shrink list */ - /* if thread is currently not handling a stack overflow and its - good size is smaller than current size, shrink its stack */ - if (inuse <= (LUAI_MAXSTACK - EXTRC_STACK) && - goodsize < L->stacksize) - luaD_reallocstack(L, goodsize); - else /* don't change stack */ - condmovestack(L,{},{}); /* (change only for debugging) */ -} - - -void luaD_inctop (lua_State *L) { - luaD_checkstack(L, 1); - L->top++; -} - -/* }================================================================== */ - - -/* -** Call a hook for the given event. Make sure there is a hook to be -** called. (Both 'L->hook' and 'L->hookmask', which triggers this -** function, can be changed asynchronously by signals.) -*/ -void luaD_hook (lua_State *L, int event, int line) { - lua_Hook hook = L->hook; - if (hook && L->allowhook) { /* make sure there is a hook */ - CallInfo *ci = L->ci; - ptrdiff_t top = savestack(L, L->top); - ptrdiff_t ci_top = savestack(L, ci->top); - lua_Debug ar; - ar.event = event; - ar.currentline = line; - ar.i_ci = ci; - luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */ - ci->top = L->top + LUA_MINSTACK; - lua_assert(ci->top <= L->stack_last); - L->allowhook = 0; /* cannot call hooks inside a hook */ - ci->callstatus |= CIST_HOOKED; - lua_unlock(L); - (*hook)(L, &ar); - lua_lock(L); - lua_assert(!L->allowhook); - L->allowhook = 1; - ci->top = restorestack(L, ci_top); - L->top = restorestack(L, top); - ci->callstatus &= ~CIST_HOOKED; - } -} - - -static void callhook (lua_State *L, CallInfo *ci) { - int hook = LUA_HOOKCALL; - ci->u.l.savedpc++; /* hooks assume 'pc' is already incremented */ - if (isLua(ci->previous) && - GET_OPCODE(*(ci->previous->u.l.savedpc - 1)) == OP_TAILCALL) { - ci->callstatus |= CIST_TAIL; - hook = LUA_HOOKTAILCALL; - } - luaD_hook(L, hook, -1); - ci->u.l.savedpc--; /* correct 'pc' */ -} - - -static StkId adjust_varargs (lua_State *L, Proto *p, int actual) { - int i; - int nfixargs = p->numparams; - StkId base, fixed; - /* move fixed parameters to final position */ - fixed = L->top - actual; /* first fixed argument */ - base = L->top; /* final position of first argument */ - for (i = 0; i < nfixargs && i < actual; i++) { - setobjs2s(L, L->top++, fixed + i); - setnilvalue(fixed + i); /* erase original copy (for GC) */ - } - for (; i < nfixargs; i++) - setnilvalue(L->top++); /* complete missing arguments */ - return base; -} - - -/* -** Check whether __call metafield of 'func' is a function. If so, put -** it in stack below original 'func' so that 'luaD_precall' can call -** it. Raise an error if __call metafield is not a function. -*/ -static void tryfuncTM (lua_State *L, StkId func) { - const TValue *tm = luaT_gettmbyobj(L, func, TM_CALL); - StkId p; - if (!ttisfunction(tm)) - luaG_typeerror(L, func, "call"); - /* Open a hole inside the stack at 'func' */ - for (p = L->top; p > func; p--) - setobjs2s(L, p, p-1); - L->top++; /* slot ensured by caller */ - setobj2s(L, func, tm); /* tag method is the new function to be called */ -} - - -/* -** Given 'nres' results at 'firstResult', move 'wanted' of them to 'res'. -** Handle most typical cases (zero results for commands, one result for -** expressions, multiple results for tail calls/single parameters) -** separated. -*/ -static int moveresults (lua_State *L, const TValue *firstResult, StkId res, - int nres, int wanted) { - switch (wanted) { /* handle typical cases separately */ - case 0: break; /* nothing to move */ - case 1: { /* one result needed */ - if (nres == 0) /* no results? */ - firstResult = luaO_nilobject; /* adjust with nil */ - setobjs2s(L, res, firstResult); /* move it to proper place */ - break; - } - case LUA_MULTRET: { - int i; - for (i = 0; i < nres; i++) /* move all results to correct place */ - setobjs2s(L, res + i, firstResult + i); - L->top = res + nres; - return 0; /* wanted == LUA_MULTRET */ - } - default: { - int i; - if (wanted <= nres) { /* enough results? */ - for (i = 0; i < wanted; i++) /* move wanted results to correct place */ - setobjs2s(L, res + i, firstResult + i); - } - else { /* not enough results; use all of them plus nils */ - for (i = 0; i < nres; i++) /* move all results to correct place */ - setobjs2s(L, res + i, firstResult + i); - for (; i < wanted; i++) /* complete wanted number of results */ - setnilvalue(res + i); - } - break; - } - } - L->top = res + wanted; /* top points after the last result */ - return 1; -} - - -/* -** Finishes a function call: calls hook if necessary, removes CallInfo, -** moves current number of results to proper place; returns 0 iff call -** wanted multiple (variable number of) results. -*/ -int luaD_poscall (lua_State *L, CallInfo *ci, StkId firstResult, int nres) { - StkId res; - int wanted = ci->nresults; - if (L->hookmask & (LUA_MASKRET | LUA_MASKLINE)) { - if (L->hookmask & LUA_MASKRET) { - ptrdiff_t fr = savestack(L, firstResult); /* hook may change stack */ - luaD_hook(L, LUA_HOOKRET, -1); - firstResult = restorestack(L, fr); - } - L->oldpc = ci->previous->u.l.savedpc; /* 'oldpc' for caller function */ - } - res = ci->func; /* res == final position of 1st result */ - L->ci = ci->previous; /* back to caller */ - /* move results to proper place */ - return moveresults(L, firstResult, res, nres, wanted); -} - - - -#define next_ci(L) (L->ci = (L->ci->next ? L->ci->next : luaE_extendCI(L))) - - -/* macro to check stack size, preserving 'p' */ -#define checkstackp(L,n,p) \ - luaD_checkstackaux(L, n, \ - ptrdiff_t t__ = savestack(L, p); /* save 'p' */ \ - luaC_checkGC(L), /* stack grow uses memory */ \ - p = restorestack(L, t__)) /* 'pos' part: restore 'p' */ - - -/* -** Prepares a function call: checks the stack, creates a new CallInfo -** entry, fills in the relevant information, calls hook if needed. -** If function is a C function, does the call, too. (Otherwise, leave -** the execution ('luaV_execute') to the caller, to allow stackless -** calls.) Returns true iff function has been executed (C function). -*/ -int luaD_precall (lua_State *L, StkId func, int nresults) { - lua_CFunction f; - CallInfo *ci; - switch (ttype(func)) { - case LUA_TCCL: /* C closure */ - f = clCvalue(func)->f; - goto Cfunc; - case LUA_TLCF: /* light C function */ - f = fvalue(func); - Cfunc: { - int n; /* number of returns */ - checkstackp(L, LUA_MINSTACK, func); /* ensure minimum stack size */ - ci = next_ci(L); /* now 'enter' new function */ - ci->nresults = nresults; - ci->func = func; - ci->top = L->top + LUA_MINSTACK; - lua_assert(ci->top <= L->stack_last); - ci->callstatus = 0; - if (L->hookmask & LUA_MASKCALL) - luaD_hook(L, LUA_HOOKCALL, -1); - lua_unlock(L); - n = (*f)(L); /* do the actual call */ - lua_lock(L); - api_checknelems(L, n); - luaD_poscall(L, ci, L->top - n, n); - return 1; - } - case LUA_TLCL: { /* Lua function: prepare its call */ - StkId base; - Proto *p = clLvalue(func)->p; - int n = cast_int(L->top - func) - 1; /* number of real arguments */ - int fsize = p->maxstacksize; /* frame size */ - checkstackp(L, fsize, func); - if (p->is_vararg) - base = adjust_varargs(L, p, n); - else { /* non vararg function */ - for (; n < p->numparams; n++) - setnilvalue(L->top++); /* complete missing arguments */ - base = func + 1; - } - ci = next_ci(L); /* now 'enter' new function */ - ci->nresults = nresults; - ci->func = func; - ci->u.l.base = base; - L->top = ci->top = base + fsize; - lua_assert(ci->top <= L->stack_last); - ci->u.l.savedpc = p->code; /* starting point */ - ci->callstatus = CIST_LUA; - if (L->hookmask & LUA_MASKCALL) - callhook(L, ci); - return 0; - } - default: { /* not a function */ - checkstackp(L, 1, func); /* ensure space for metamethod */ - tryfuncTM(L, func); /* try to get '__call' metamethod */ - return luaD_precall(L, func, nresults); /* now it must be a function */ - } - } -} - - -/* -** Check appropriate error for stack overflow ("regular" overflow or -** overflow while handling stack overflow). If 'nCalls' is larger than -** LUAI_MAXCCALLS (which means it is handling a "regular" overflow) but -** smaller than 9/8 of LUAI_MAXCCALLS, does not report an error (to -** allow overflow handling to work) -*/ -static void stackerror (lua_State *L) { - if (L->nCcalls == LUAI_MAXCCALLS) - luaG_runerror(L, "C stack overflow"); - else if (L->nCcalls >= (LUAI_MAXCCALLS + (LUAI_MAXCCALLS>>3))) - luaD_throw(L, LUA_ERRERR); /* error while handing stack error */ -} - - -/* -** Call a function (C or Lua). The function to be called is at *func. -** The arguments are on the stack, right after the function. -** When returns, all the results are on the stack, starting at the original -** function position. -*/ -void luaD_call (lua_State *L, StkId func, int nResults) { - if (++L->nCcalls >= LUAI_MAXCCALLS) - stackerror(L); - if (!luaD_precall(L, func, nResults)) /* is a Lua function? */ - luaV_execute(L); /* call it */ - L->nCcalls--; -} - - -/* -** Similar to 'luaD_call', but does not allow yields during the call -*/ -void luaD_callnoyield (lua_State *L, StkId func, int nResults) { - L->nny++; - luaD_call(L, func, nResults); - L->nny--; -} - - -/* -** Completes the execution of an interrupted C function, calling its -** continuation function. -*/ -static void finishCcall (lua_State *L, int status) { - CallInfo *ci = L->ci; - int n; - /* must have a continuation and must be able to call it */ - lua_assert(ci->u.c.k != NULL && L->nny == 0); - /* error status can only happen in a protected call */ - lua_assert((ci->callstatus & CIST_YPCALL) || status == LUA_YIELD); - if (ci->callstatus & CIST_YPCALL) { /* was inside a pcall? */ - ci->callstatus &= ~CIST_YPCALL; /* continuation is also inside it */ - L->errfunc = ci->u.c.old_errfunc; /* with the same error function */ - } - /* finish 'lua_callk'/'lua_pcall'; CIST_YPCALL and 'errfunc' already - handled */ - adjustresults(L, ci->nresults); - lua_unlock(L); - n = (*ci->u.c.k)(L, status, ci->u.c.ctx); /* call continuation function */ - lua_lock(L); - api_checknelems(L, n); - luaD_poscall(L, ci, L->top - n, n); /* finish 'luaD_precall' */ -} - - -/* -** Executes "full continuation" (everything in the stack) of a -** previously interrupted coroutine until the stack is empty (or another -** interruption long-jumps out of the loop). If the coroutine is -** recovering from an error, 'ud' points to the error status, which must -** be passed to the first continuation function (otherwise the default -** status is LUA_YIELD). -*/ -static void unroll (lua_State *L, void *ud) { - if (ud != NULL) /* error status? */ - finishCcall(L, *(int *)ud); /* finish 'lua_pcallk' callee */ - while (L->ci != &L->base_ci) { /* something in the stack */ - if (!isLua(L->ci)) /* C function? */ - finishCcall(L, LUA_YIELD); /* complete its execution */ - else { /* Lua function */ - luaV_finishOp(L); /* finish interrupted instruction */ - luaV_execute(L); /* execute down to higher C 'boundary' */ - } - } -} - - -/* -** Try to find a suspended protected call (a "recover point") for the -** given thread. -*/ -static CallInfo *findpcall (lua_State *L) { - CallInfo *ci; - for (ci = L->ci; ci != NULL; ci = ci->previous) { /* search for a pcall */ - if (ci->callstatus & CIST_YPCALL) - return ci; - } - return NULL; /* no pending pcall */ -} - - -/* -** Recovers from an error in a coroutine. Finds a recover point (if -** there is one) and completes the execution of the interrupted -** 'luaD_pcall'. If there is no recover point, returns zero. -*/ -static int recover (lua_State *L, int status) { - StkId oldtop; - CallInfo *ci = findpcall(L); - if (ci == NULL) return 0; /* no recovery point */ - /* "finish" luaD_pcall */ - oldtop = restorestack(L, ci->extra); - luaF_close(L, oldtop); - seterrorobj(L, status, oldtop); - L->ci = ci; - L->allowhook = getoah(ci->callstatus); /* restore original 'allowhook' */ - L->nny = 0; /* should be zero to be yieldable */ - luaD_shrinkstack(L); - L->errfunc = ci->u.c.old_errfunc; - return 1; /* continue running the coroutine */ -} - - -/* -** Signal an error in the call to 'lua_resume', not in the execution -** of the coroutine itself. (Such errors should not be handled by any -** coroutine error handler and should not kill the coroutine.) -*/ -static int resume_error (lua_State *L, const char *msg, int narg) { - L->top -= narg; /* remove args from the stack */ - setsvalue2s(L, L->top, luaS_new(L, msg)); /* push error message */ - api_incr_top(L); - lua_unlock(L); - return LUA_ERRRUN; -} - - -/* -** Do the work for 'lua_resume' in protected mode. Most of the work -** depends on the status of the coroutine: initial state, suspended -** inside a hook, or regularly suspended (optionally with a continuation -** function), plus erroneous cases: non-suspended coroutine or dead -** coroutine. -*/ -static void resume (lua_State *L, void *ud) { - int n = *(cast(int*, ud)); /* number of arguments */ - StkId firstArg = L->top - n; /* first argument */ - CallInfo *ci = L->ci; - if (L->status == LUA_OK) { /* starting a coroutine? */ - if (!luaD_precall(L, firstArg - 1, LUA_MULTRET)) /* Lua function? */ - luaV_execute(L); /* call it */ - } - else { /* resuming from previous yield */ - lua_assert(L->status == LUA_YIELD); - L->status = LUA_OK; /* mark that it is running (again) */ - ci->func = restorestack(L, ci->extra); - if (isLua(ci)) /* yielded inside a hook? */ - luaV_execute(L); /* just continue running Lua code */ - else { /* 'common' yield */ - if (ci->u.c.k != NULL) { /* does it have a continuation function? */ - lua_unlock(L); - n = (*ci->u.c.k)(L, LUA_YIELD, ci->u.c.ctx); /* call continuation */ - lua_lock(L); - api_checknelems(L, n); - firstArg = L->top - n; /* yield results come from continuation */ - } - luaD_poscall(L, ci, firstArg, n); /* finish 'luaD_precall' */ - } - unroll(L, NULL); /* run continuation */ - } -} - - -LUA_API int lua_resume (lua_State *L, lua_State *from, int nargs) { - int status; - unsigned short oldnny = L->nny; /* save "number of non-yieldable" calls */ - lua_lock(L); - if (L->status == LUA_OK) { /* may be starting a coroutine */ - if (L->ci != &L->base_ci) /* not in base level? */ - return resume_error(L, "cannot resume non-suspended coroutine", nargs); - } - else if (L->status != LUA_YIELD) - return resume_error(L, "cannot resume dead coroutine", nargs); - L->nCcalls = (from) ? from->nCcalls + 1 : 1; - if (L->nCcalls >= LUAI_MAXCCALLS) - return resume_error(L, "C stack overflow", nargs); - luai_userstateresume(L, nargs); - L->nny = 0; /* allow yields */ - api_checknelems(L, (L->status == LUA_OK) ? nargs + 1 : nargs); - status = luaD_rawrunprotected(L, resume, &nargs); - if (status == -1) /* error calling 'lua_resume'? */ - status = LUA_ERRRUN; - else { /* continue running after recoverable errors */ - while (errorstatus(status) && recover(L, status)) { - /* unroll continuation */ - status = luaD_rawrunprotected(L, unroll, &status); - } - if (errorstatus(status)) { /* unrecoverable error? */ - L->status = cast_byte(status); /* mark thread as 'dead' */ - seterrorobj(L, status, L->top); /* push error message */ - L->ci->top = L->top; - } - else lua_assert(status == L->status); /* normal end or yield */ - } - L->nny = oldnny; /* restore 'nny' */ - L->nCcalls--; - lua_assert(L->nCcalls == ((from) ? from->nCcalls : 0)); - lua_unlock(L); - return status; -} - - -LUA_API int lua_isyieldable (lua_State *L) { - return (L->nny == 0); -} - - -LUA_API int lua_yieldk (lua_State *L, int nresults, lua_KContext ctx, - lua_KFunction k) { - CallInfo *ci = L->ci; - luai_userstateyield(L, nresults); - lua_lock(L); - api_checknelems(L, nresults); - if (L->nny > 0) { - if (L != G(L)->mainthread) - luaG_runerror(L, "attempt to yield across a C-call boundary"); - else - luaG_runerror(L, "attempt to yield from outside a coroutine"); - } - L->status = LUA_YIELD; - ci->extra = savestack(L, ci->func); /* save current 'func' */ - if (isLua(ci)) { /* inside a hook? */ - api_check(L, k == NULL, "hooks cannot continue after yielding"); - } - else { - if ((ci->u.c.k = k) != NULL) /* is there a continuation? */ - ci->u.c.ctx = ctx; /* save context */ - ci->func = L->top - nresults - 1; /* protect stack below results */ - luaD_throw(L, LUA_YIELD); - } - lua_assert(ci->callstatus & CIST_HOOKED); /* must be inside a hook */ - lua_unlock(L); - return 0; /* return to 'luaD_hook' */ -} - - -int luaD_pcall (lua_State *L, Pfunc func, void *u, - ptrdiff_t old_top, ptrdiff_t ef) { - int status; - CallInfo *old_ci = L->ci; - lu_byte old_allowhooks = L->allowhook; - unsigned short old_nny = L->nny; - ptrdiff_t old_errfunc = L->errfunc; - L->errfunc = ef; - status = luaD_rawrunprotected(L, func, u); - if (status != LUA_OK) { /* an error occurred? */ - StkId oldtop = restorestack(L, old_top); - luaF_close(L, oldtop); /* close possible pending closures */ - seterrorobj(L, status, oldtop); - L->ci = old_ci; - L->allowhook = old_allowhooks; - L->nny = old_nny; - luaD_shrinkstack(L); - } - L->errfunc = old_errfunc; - return status; -} - - - -/* -** Execute a protected parser. -*/ -struct SParser { /* data to 'f_parser' */ - ZIO *z; - Mbuffer buff; /* dynamic structure used by the scanner */ - Dyndata dyd; /* dynamic structures used by the parser */ - const char *mode; - const char *name; -}; - - -static void checkmode (lua_State *L, const char *mode, const char *x) { - if (mode && strchr(mode, x[0]) == NULL) { - luaO_pushfstring(L, - "attempt to load a %s chunk (mode is '%s')", x, mode); - luaD_throw(L, LUA_ERRSYNTAX); - } -} - - -static void f_parser (lua_State *L, void *ud) { - LClosure *cl; - struct SParser *p = cast(struct SParser *, ud); - int c = zgetc(p->z); /* read first character */ - if (c == LUA_SIGNATURE[0]) { - checkmode(L, p->mode, "binary"); - cl = luaU_undump(L, p->z, p->name); - } - else { - checkmode(L, p->mode, "text"); - cl = luaY_parser(L, p->z, &p->buff, &p->dyd, p->name, c); - } - lua_assert(cl->nupvalues == cl->p->sizeupvalues); - luaF_initupvals(L, cl); -} - - -int luaD_protectedparser (lua_State *L, ZIO *z, const char *name, - const char *mode) { - struct SParser p; - int status; - L->nny++; /* cannot yield during parsing */ - p.z = z; p.name = name; p.mode = mode; - p.dyd.actvar.arr = NULL; p.dyd.actvar.size = 0; - p.dyd.gt.arr = NULL; p.dyd.gt.size = 0; - p.dyd.label.arr = NULL; p.dyd.label.size = 0; - luaZ_initbuffer(L, &p.buff); - status = luaD_pcall(L, f_parser, &p, savestack(L, L->top), L->errfunc); - luaZ_freebuffer(L, &p.buff); - luaM_freearray(L, p.dyd.actvar.arr, p.dyd.actvar.size); - luaM_freearray(L, p.dyd.gt.arr, p.dyd.gt.size); - luaM_freearray(L, p.dyd.label.arr, p.dyd.label.size); - L->nny--; - return status; -} - - diff --git a/deps/rcheevos/test/lua/src/ldo.h b/deps/rcheevos/test/lua/src/ldo.h deleted file mode 100644 index 4f5d51c3c7..0000000000 --- a/deps/rcheevos/test/lua/src/ldo.h +++ /dev/null @@ -1,58 +0,0 @@ -/* -** $Id: ldo.h,v 2.29 2015/12/21 13:02:14 roberto Exp $ -** Stack and Call structure of Lua -** See Copyright Notice in lua.h -*/ - -#ifndef ldo_h -#define ldo_h - - -#include "lobject.h" -#include "lstate.h" -#include "lzio.h" - - -/* -** Macro to check stack size and grow stack if needed. Parameters -** 'pre'/'pos' allow the macro to preserve a pointer into the -** stack across reallocations, doing the work only when needed. -** 'condmovestack' is used in heavy tests to force a stack reallocation -** at every check. -*/ -#define luaD_checkstackaux(L,n,pre,pos) \ - if (L->stack_last - L->top <= (n)) \ - { pre; luaD_growstack(L, n); pos; } else { condmovestack(L,pre,pos); } - -/* In general, 'pre'/'pos' are empty (nothing to save) */ -#define luaD_checkstack(L,n) luaD_checkstackaux(L,n,(void)0,(void)0) - - - -#define savestack(L,p) ((char *)(p) - (char *)L->stack) -#define restorestack(L,n) ((TValue *)((char *)L->stack + (n))) - - -/* type of protected functions, to be ran by 'runprotected' */ -typedef void (*Pfunc) (lua_State *L, void *ud); - -LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name, - const char *mode); -LUAI_FUNC void luaD_hook (lua_State *L, int event, int line); -LUAI_FUNC int luaD_precall (lua_State *L, StkId func, int nresults); -LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults); -LUAI_FUNC void luaD_callnoyield (lua_State *L, StkId func, int nResults); -LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u, - ptrdiff_t oldtop, ptrdiff_t ef); -LUAI_FUNC int luaD_poscall (lua_State *L, CallInfo *ci, StkId firstResult, - int nres); -LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize); -LUAI_FUNC void luaD_growstack (lua_State *L, int n); -LUAI_FUNC void luaD_shrinkstack (lua_State *L); -LUAI_FUNC void luaD_inctop (lua_State *L); - -LUAI_FUNC l_noret luaD_throw (lua_State *L, int errcode); -LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud); - -#endif - diff --git a/deps/rcheevos/test/lua/src/ldump.c b/deps/rcheevos/test/lua/src/ldump.c deleted file mode 100644 index 016e300822..0000000000 --- a/deps/rcheevos/test/lua/src/ldump.c +++ /dev/null @@ -1,215 +0,0 @@ -/* -** $Id: ldump.c,v 2.37 2015/10/08 15:53:49 roberto Exp $ -** save precompiled Lua chunks -** See Copyright Notice in lua.h -*/ - -#define ldump_c -#define LUA_CORE - -#include "lprefix.h" - - -#include - -#include "lua.h" - -#include "lobject.h" -#include "lstate.h" -#include "lundump.h" - - -typedef struct { - lua_State *L; - lua_Writer writer; - void *data; - int strip; - int status; -} DumpState; - - -/* -** All high-level dumps go through DumpVector; you can change it to -** change the endianness of the result -*/ -#define DumpVector(v,n,D) DumpBlock(v,(n)*sizeof((v)[0]),D) - -#define DumpLiteral(s,D) DumpBlock(s, sizeof(s) - sizeof(char), D) - - -static void DumpBlock (const void *b, size_t size, DumpState *D) { - if (D->status == 0 && size > 0) { - lua_unlock(D->L); - D->status = (*D->writer)(D->L, b, size, D->data); - lua_lock(D->L); - } -} - - -#define DumpVar(x,D) DumpVector(&x,1,D) - - -static void DumpByte (int y, DumpState *D) { - lu_byte x = (lu_byte)y; - DumpVar(x, D); -} - - -static void DumpInt (int x, DumpState *D) { - DumpVar(x, D); -} - - -static void DumpNumber (lua_Number x, DumpState *D) { - DumpVar(x, D); -} - - -static void DumpInteger (lua_Integer x, DumpState *D) { - DumpVar(x, D); -} - - -static void DumpString (const TString *s, DumpState *D) { - if (s == NULL) - DumpByte(0, D); - else { - size_t size = tsslen(s) + 1; /* include trailing '\0' */ - const char *str = getstr(s); - if (size < 0xFF) - DumpByte(cast_int(size), D); - else { - DumpByte(0xFF, D); - DumpVar(size, D); - } - DumpVector(str, size - 1, D); /* no need to save '\0' */ - } -} - - -static void DumpCode (const Proto *f, DumpState *D) { - DumpInt(f->sizecode, D); - DumpVector(f->code, f->sizecode, D); -} - - -static void DumpFunction(const Proto *f, TString *psource, DumpState *D); - -static void DumpConstants (const Proto *f, DumpState *D) { - int i; - int n = f->sizek; - DumpInt(n, D); - for (i = 0; i < n; i++) { - const TValue *o = &f->k[i]; - DumpByte(ttype(o), D); - switch (ttype(o)) { - case LUA_TNIL: - break; - case LUA_TBOOLEAN: - DumpByte(bvalue(o), D); - break; - case LUA_TNUMFLT: - DumpNumber(fltvalue(o), D); - break; - case LUA_TNUMINT: - DumpInteger(ivalue(o), D); - break; - case LUA_TSHRSTR: - case LUA_TLNGSTR: - DumpString(tsvalue(o), D); - break; - default: - lua_assert(0); - } - } -} - - -static void DumpProtos (const Proto *f, DumpState *D) { - int i; - int n = f->sizep; - DumpInt(n, D); - for (i = 0; i < n; i++) - DumpFunction(f->p[i], f->source, D); -} - - -static void DumpUpvalues (const Proto *f, DumpState *D) { - int i, n = f->sizeupvalues; - DumpInt(n, D); - for (i = 0; i < n; i++) { - DumpByte(f->upvalues[i].instack, D); - DumpByte(f->upvalues[i].idx, D); - } -} - - -static void DumpDebug (const Proto *f, DumpState *D) { - int i, n; - n = (D->strip) ? 0 : f->sizelineinfo; - DumpInt(n, D); - DumpVector(f->lineinfo, n, D); - n = (D->strip) ? 0 : f->sizelocvars; - DumpInt(n, D); - for (i = 0; i < n; i++) { - DumpString(f->locvars[i].varname, D); - DumpInt(f->locvars[i].startpc, D); - DumpInt(f->locvars[i].endpc, D); - } - n = (D->strip) ? 0 : f->sizeupvalues; - DumpInt(n, D); - for (i = 0; i < n; i++) - DumpString(f->upvalues[i].name, D); -} - - -static void DumpFunction (const Proto *f, TString *psource, DumpState *D) { - if (D->strip || f->source == psource) - DumpString(NULL, D); /* no debug info or same source as its parent */ - else - DumpString(f->source, D); - DumpInt(f->linedefined, D); - DumpInt(f->lastlinedefined, D); - DumpByte(f->numparams, D); - DumpByte(f->is_vararg, D); - DumpByte(f->maxstacksize, D); - DumpCode(f, D); - DumpConstants(f, D); - DumpUpvalues(f, D); - DumpProtos(f, D); - DumpDebug(f, D); -} - - -static void DumpHeader (DumpState *D) { - DumpLiteral(LUA_SIGNATURE, D); - DumpByte(LUAC_VERSION, D); - DumpByte(LUAC_FORMAT, D); - DumpLiteral(LUAC_DATA, D); - DumpByte(sizeof(int), D); - DumpByte(sizeof(size_t), D); - DumpByte(sizeof(Instruction), D); - DumpByte(sizeof(lua_Integer), D); - DumpByte(sizeof(lua_Number), D); - DumpInteger(LUAC_INT, D); - DumpNumber(LUAC_NUM, D); -} - - -/* -** dump Lua function as precompiled chunk -*/ -int luaU_dump(lua_State *L, const Proto *f, lua_Writer w, void *data, - int strip) { - DumpState D; - D.L = L; - D.writer = w; - D.data = data; - D.strip = strip; - D.status = 0; - DumpHeader(&D); - DumpByte(f->sizeupvalues, &D); - DumpFunction(f, NULL, &D); - return D.status; -} - diff --git a/deps/rcheevos/test/lua/src/lfunc.c b/deps/rcheevos/test/lua/src/lfunc.c deleted file mode 100644 index 67967dab3f..0000000000 --- a/deps/rcheevos/test/lua/src/lfunc.c +++ /dev/null @@ -1,151 +0,0 @@ -/* -** $Id: lfunc.c,v 2.45 2014/11/02 19:19:04 roberto Exp $ -** Auxiliary functions to manipulate prototypes and closures -** See Copyright Notice in lua.h -*/ - -#define lfunc_c -#define LUA_CORE - -#include "lprefix.h" - - -#include - -#include "lua.h" - -#include "lfunc.h" -#include "lgc.h" -#include "lmem.h" -#include "lobject.h" -#include "lstate.h" - - - -CClosure *luaF_newCclosure (lua_State *L, int n) { - GCObject *o = luaC_newobj(L, LUA_TCCL, sizeCclosure(n)); - CClosure *c = gco2ccl(o); - c->nupvalues = cast_byte(n); - return c; -} - - -LClosure *luaF_newLclosure (lua_State *L, int n) { - GCObject *o = luaC_newobj(L, LUA_TLCL, sizeLclosure(n)); - LClosure *c = gco2lcl(o); - c->p = NULL; - c->nupvalues = cast_byte(n); - while (n--) c->upvals[n] = NULL; - return c; -} - -/* -** fill a closure with new closed upvalues -*/ -void luaF_initupvals (lua_State *L, LClosure *cl) { - int i; - for (i = 0; i < cl->nupvalues; i++) { - UpVal *uv = luaM_new(L, UpVal); - uv->refcount = 1; - uv->v = &uv->u.value; /* make it closed */ - setnilvalue(uv->v); - cl->upvals[i] = uv; - } -} - - -UpVal *luaF_findupval (lua_State *L, StkId level) { - UpVal **pp = &L->openupval; - UpVal *p; - UpVal *uv; - lua_assert(isintwups(L) || L->openupval == NULL); - while (*pp != NULL && (p = *pp)->v >= level) { - lua_assert(upisopen(p)); - if (p->v == level) /* found a corresponding upvalue? */ - return p; /* return it */ - pp = &p->u.open.next; - } - /* not found: create a new upvalue */ - uv = luaM_new(L, UpVal); - uv->refcount = 0; - uv->u.open.next = *pp; /* link it to list of open upvalues */ - uv->u.open.touched = 1; - *pp = uv; - uv->v = level; /* current value lives in the stack */ - if (!isintwups(L)) { /* thread not in list of threads with upvalues? */ - L->twups = G(L)->twups; /* link it to the list */ - G(L)->twups = L; - } - return uv; -} - - -void luaF_close (lua_State *L, StkId level) { - UpVal *uv; - while (L->openupval != NULL && (uv = L->openupval)->v >= level) { - lua_assert(upisopen(uv)); - L->openupval = uv->u.open.next; /* remove from 'open' list */ - if (uv->refcount == 0) /* no references? */ - luaM_free(L, uv); /* free upvalue */ - else { - setobj(L, &uv->u.value, uv->v); /* move value to upvalue slot */ - uv->v = &uv->u.value; /* now current value lives here */ - luaC_upvalbarrier(L, uv); - } - } -} - - -Proto *luaF_newproto (lua_State *L) { - GCObject *o = luaC_newobj(L, LUA_TPROTO, sizeof(Proto)); - Proto *f = gco2p(o); - f->k = NULL; - f->sizek = 0; - f->p = NULL; - f->sizep = 0; - f->code = NULL; - f->cache = NULL; - f->sizecode = 0; - f->lineinfo = NULL; - f->sizelineinfo = 0; - f->upvalues = NULL; - f->sizeupvalues = 0; - f->numparams = 0; - f->is_vararg = 0; - f->maxstacksize = 0; - f->locvars = NULL; - f->sizelocvars = 0; - f->linedefined = 0; - f->lastlinedefined = 0; - f->source = NULL; - return f; -} - - -void luaF_freeproto (lua_State *L, Proto *f) { - luaM_freearray(L, f->code, f->sizecode); - luaM_freearray(L, f->p, f->sizep); - luaM_freearray(L, f->k, f->sizek); - luaM_freearray(L, f->lineinfo, f->sizelineinfo); - luaM_freearray(L, f->locvars, f->sizelocvars); - luaM_freearray(L, f->upvalues, f->sizeupvalues); - luaM_free(L, f); -} - - -/* -** Look for n-th local variable at line 'line' in function 'func'. -** Returns NULL if not found. -*/ -const char *luaF_getlocalname (const Proto *f, int local_number, int pc) { - int i; - for (i = 0; isizelocvars && f->locvars[i].startpc <= pc; i++) { - if (pc < f->locvars[i].endpc) { /* is variable active? */ - local_number--; - if (local_number == 0) - return getstr(f->locvars[i].varname); - } - } - return NULL; /* not found */ -} - diff --git a/deps/rcheevos/test/lua/src/lfunc.h b/deps/rcheevos/test/lua/src/lfunc.h deleted file mode 100644 index 2eeb0d5a48..0000000000 --- a/deps/rcheevos/test/lua/src/lfunc.h +++ /dev/null @@ -1,61 +0,0 @@ -/* -** $Id: lfunc.h,v 2.15 2015/01/13 15:49:11 roberto Exp $ -** Auxiliary functions to manipulate prototypes and closures -** See Copyright Notice in lua.h -*/ - -#ifndef lfunc_h -#define lfunc_h - - -#include "lobject.h" - - -#define sizeCclosure(n) (cast(int, sizeof(CClosure)) + \ - cast(int, sizeof(TValue)*((n)-1))) - -#define sizeLclosure(n) (cast(int, sizeof(LClosure)) + \ - cast(int, sizeof(TValue *)*((n)-1))) - - -/* test whether thread is in 'twups' list */ -#define isintwups(L) (L->twups != L) - - -/* -** maximum number of upvalues in a closure (both C and Lua). (Value -** must fit in a VM register.) -*/ -#define MAXUPVAL 255 - - -/* -** Upvalues for Lua closures -*/ -struct UpVal { - TValue *v; /* points to stack or to its own value */ - lu_mem refcount; /* reference counter */ - union { - struct { /* (when open) */ - UpVal *next; /* linked list */ - int touched; /* mark to avoid cycles with dead threads */ - } open; - TValue value; /* the value (when closed) */ - } u; -}; - -#define upisopen(up) ((up)->v != &(up)->u.value) - - -LUAI_FUNC Proto *luaF_newproto (lua_State *L); -LUAI_FUNC CClosure *luaF_newCclosure (lua_State *L, int nelems); -LUAI_FUNC LClosure *luaF_newLclosure (lua_State *L, int nelems); -LUAI_FUNC void luaF_initupvals (lua_State *L, LClosure *cl); -LUAI_FUNC UpVal *luaF_findupval (lua_State *L, StkId level); -LUAI_FUNC void luaF_close (lua_State *L, StkId level); -LUAI_FUNC void luaF_freeproto (lua_State *L, Proto *f); -LUAI_FUNC const char *luaF_getlocalname (const Proto *func, int local_number, - int pc); - - -#endif diff --git a/deps/rcheevos/test/lua/src/lgc.c b/deps/rcheevos/test/lua/src/lgc.c deleted file mode 100644 index ba2c19e14e..0000000000 --- a/deps/rcheevos/test/lua/src/lgc.c +++ /dev/null @@ -1,1178 +0,0 @@ -/* -** $Id: lgc.c,v 2.215 2016/12/22 13:08:50 roberto Exp $ -** Garbage Collector -** See Copyright Notice in lua.h -*/ - -#define lgc_c -#define LUA_CORE - -#include "lprefix.h" - - -#include - -#include "lua.h" - -#include "ldebug.h" -#include "ldo.h" -#include "lfunc.h" -#include "lgc.h" -#include "lmem.h" -#include "lobject.h" -#include "lstate.h" -#include "lstring.h" -#include "ltable.h" -#include "ltm.h" - - -/* -** internal state for collector while inside the atomic phase. The -** collector should never be in this state while running regular code. -*/ -#define GCSinsideatomic (GCSpause + 1) - -/* -** cost of sweeping one element (the size of a small object divided -** by some adjust for the sweep speed) -*/ -#define GCSWEEPCOST ((sizeof(TString) + 4) / 4) - -/* maximum number of elements to sweep in each single step */ -#define GCSWEEPMAX (cast_int((GCSTEPSIZE / GCSWEEPCOST) / 4)) - -/* cost of calling one finalizer */ -#define GCFINALIZECOST GCSWEEPCOST - - -/* -** macro to adjust 'stepmul': 'stepmul' is actually used like -** 'stepmul / STEPMULADJ' (value chosen by tests) -*/ -#define STEPMULADJ 200 - - -/* -** macro to adjust 'pause': 'pause' is actually used like -** 'pause / PAUSEADJ' (value chosen by tests) -*/ -#define PAUSEADJ 100 - - -/* -** 'makewhite' erases all color bits then sets only the current white -** bit -*/ -#define maskcolors (~(bitmask(BLACKBIT) | WHITEBITS)) -#define makewhite(g,x) \ - (x->marked = cast_byte((x->marked & maskcolors) | luaC_white(g))) - -#define white2gray(x) resetbits(x->marked, WHITEBITS) -#define black2gray(x) resetbit(x->marked, BLACKBIT) - - -#define valiswhite(x) (iscollectable(x) && iswhite(gcvalue(x))) - -#define checkdeadkey(n) lua_assert(!ttisdeadkey(gkey(n)) || ttisnil(gval(n))) - - -#define checkconsistency(obj) \ - lua_longassert(!iscollectable(obj) || righttt(obj)) - - -#define markvalue(g,o) { checkconsistency(o); \ - if (valiswhite(o)) reallymarkobject(g,gcvalue(o)); } - -#define markobject(g,t) { if (iswhite(t)) reallymarkobject(g, obj2gco(t)); } - -/* -** mark an object that can be NULL (either because it is really optional, -** or it was stripped as debug info, or inside an uncompleted structure) -*/ -#define markobjectN(g,t) { if (t) markobject(g,t); } - -static void reallymarkobject (global_State *g, GCObject *o); - - -/* -** {====================================================== -** Generic functions -** ======================================================= -*/ - - -/* -** one after last element in a hash array -*/ -#define gnodelast(h) gnode(h, cast(size_t, sizenode(h))) - - -/* -** link collectable object 'o' into list pointed by 'p' -*/ -#define linkgclist(o,p) ((o)->gclist = (p), (p) = obj2gco(o)) - - -/* -** If key is not marked, mark its entry as dead. This allows key to be -** collected, but keeps its entry in the table. A dead node is needed -** when Lua looks up for a key (it may be part of a chain) and when -** traversing a weak table (key might be removed from the table during -** traversal). Other places never manipulate dead keys, because its -** associated nil value is enough to signal that the entry is logically -** empty. -*/ -static void removeentry (Node *n) { - lua_assert(ttisnil(gval(n))); - if (valiswhite(gkey(n))) - setdeadvalue(wgkey(n)); /* unused and unmarked key; remove it */ -} - - -/* -** tells whether a key or value can be cleared from a weak -** table. Non-collectable objects are never removed from weak -** tables. Strings behave as 'values', so are never removed too. for -** other objects: if really collected, cannot keep them; for objects -** being finalized, keep them in keys, but not in values -*/ -static int iscleared (global_State *g, const TValue *o) { - if (!iscollectable(o)) return 0; - else if (ttisstring(o)) { - markobject(g, tsvalue(o)); /* strings are 'values', so are never weak */ - return 0; - } - else return iswhite(gcvalue(o)); -} - - -/* -** barrier that moves collector forward, that is, mark the white object -** being pointed by a black object. (If in sweep phase, clear the black -** object to white [sweep it] to avoid other barrier calls for this -** same object.) -*/ -void luaC_barrier_ (lua_State *L, GCObject *o, GCObject *v) { - global_State *g = G(L); - lua_assert(isblack(o) && iswhite(v) && !isdead(g, v) && !isdead(g, o)); - if (keepinvariant(g)) /* must keep invariant? */ - reallymarkobject(g, v); /* restore invariant */ - else { /* sweep phase */ - lua_assert(issweepphase(g)); - makewhite(g, o); /* mark main obj. as white to avoid other barriers */ - } -} - - -/* -** barrier that moves collector backward, that is, mark the black object -** pointing to a white object as gray again. -*/ -void luaC_barrierback_ (lua_State *L, Table *t) { - global_State *g = G(L); - lua_assert(isblack(t) && !isdead(g, t)); - black2gray(t); /* make table gray (again) */ - linkgclist(t, g->grayagain); -} - - -/* -** barrier for assignments to closed upvalues. Because upvalues are -** shared among closures, it is impossible to know the color of all -** closures pointing to it. So, we assume that the object being assigned -** must be marked. -*/ -void luaC_upvalbarrier_ (lua_State *L, UpVal *uv) { - global_State *g = G(L); - GCObject *o = gcvalue(uv->v); - lua_assert(!upisopen(uv)); /* ensured by macro luaC_upvalbarrier */ - if (keepinvariant(g)) - markobject(g, o); -} - - -void luaC_fix (lua_State *L, GCObject *o) { - global_State *g = G(L); - lua_assert(g->allgc == o); /* object must be 1st in 'allgc' list! */ - white2gray(o); /* they will be gray forever */ - g->allgc = o->next; /* remove object from 'allgc' list */ - o->next = g->fixedgc; /* link it to 'fixedgc' list */ - g->fixedgc = o; -} - - -/* -** create a new collectable object (with given type and size) and link -** it to 'allgc' list. -*/ -GCObject *luaC_newobj (lua_State *L, int tt, size_t sz) { - global_State *g = G(L); - GCObject *o = cast(GCObject *, luaM_newobject(L, novariant(tt), sz)); - o->marked = luaC_white(g); - o->tt = tt; - o->next = g->allgc; - g->allgc = o; - return o; -} - -/* }====================================================== */ - - - -/* -** {====================================================== -** Mark functions -** ======================================================= -*/ - - -/* -** mark an object. Userdata, strings, and closed upvalues are visited -** and turned black here. Other objects are marked gray and added -** to appropriate list to be visited (and turned black) later. (Open -** upvalues are already linked in 'headuv' list.) -*/ -static void reallymarkobject (global_State *g, GCObject *o) { - reentry: - white2gray(o); - switch (o->tt) { - case LUA_TSHRSTR: { - gray2black(o); - g->GCmemtrav += sizelstring(gco2ts(o)->shrlen); - break; - } - case LUA_TLNGSTR: { - gray2black(o); - g->GCmemtrav += sizelstring(gco2ts(o)->u.lnglen); - break; - } - case LUA_TUSERDATA: { - TValue uvalue; - markobjectN(g, gco2u(o)->metatable); /* mark its metatable */ - gray2black(o); - g->GCmemtrav += sizeudata(gco2u(o)); - getuservalue(g->mainthread, gco2u(o), &uvalue); - if (valiswhite(&uvalue)) { /* markvalue(g, &uvalue); */ - o = gcvalue(&uvalue); - goto reentry; - } - break; - } - case LUA_TLCL: { - linkgclist(gco2lcl(o), g->gray); - break; - } - case LUA_TCCL: { - linkgclist(gco2ccl(o), g->gray); - break; - } - case LUA_TTABLE: { - linkgclist(gco2t(o), g->gray); - break; - } - case LUA_TTHREAD: { - linkgclist(gco2th(o), g->gray); - break; - } - case LUA_TPROTO: { - linkgclist(gco2p(o), g->gray); - break; - } - default: lua_assert(0); break; - } -} - - -/* -** mark metamethods for basic types -*/ -static void markmt (global_State *g) { - int i; - for (i=0; i < LUA_NUMTAGS; i++) - markobjectN(g, g->mt[i]); -} - - -/* -** mark all objects in list of being-finalized -*/ -static void markbeingfnz (global_State *g) { - GCObject *o; - for (o = g->tobefnz; o != NULL; o = o->next) - markobject(g, o); -} - - -/* -** Mark all values stored in marked open upvalues from non-marked threads. -** (Values from marked threads were already marked when traversing the -** thread.) Remove from the list threads that no longer have upvalues and -** not-marked threads. -*/ -static void remarkupvals (global_State *g) { - lua_State *thread; - lua_State **p = &g->twups; - while ((thread = *p) != NULL) { - lua_assert(!isblack(thread)); /* threads are never black */ - if (isgray(thread) && thread->openupval != NULL) - p = &thread->twups; /* keep marked thread with upvalues in the list */ - else { /* thread is not marked or without upvalues */ - UpVal *uv; - *p = thread->twups; /* remove thread from the list */ - thread->twups = thread; /* mark that it is out of list */ - for (uv = thread->openupval; uv != NULL; uv = uv->u.open.next) { - if (uv->u.open.touched) { - markvalue(g, uv->v); /* remark upvalue's value */ - uv->u.open.touched = 0; - } - } - } - } -} - - -/* -** mark root set and reset all gray lists, to start a new collection -*/ -static void restartcollection (global_State *g) { - g->gray = g->grayagain = NULL; - g->weak = g->allweak = g->ephemeron = NULL; - markobject(g, g->mainthread); - markvalue(g, &g->l_registry); - markmt(g); - markbeingfnz(g); /* mark any finalizing object left from previous cycle */ -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Traverse functions -** ======================================================= -*/ - -/* -** Traverse a table with weak values and link it to proper list. During -** propagate phase, keep it in 'grayagain' list, to be revisited in the -** atomic phase. In the atomic phase, if table has any white value, -** put it in 'weak' list, to be cleared. -*/ -static void traverseweakvalue (global_State *g, Table *h) { - Node *n, *limit = gnodelast(h); - /* if there is array part, assume it may have white values (it is not - worth traversing it now just to check) */ - int hasclears = (h->sizearray > 0); - for (n = gnode(h, 0); n < limit; n++) { /* traverse hash part */ - checkdeadkey(n); - if (ttisnil(gval(n))) /* entry is empty? */ - removeentry(n); /* remove it */ - else { - lua_assert(!ttisnil(gkey(n))); - markvalue(g, gkey(n)); /* mark key */ - if (!hasclears && iscleared(g, gval(n))) /* is there a white value? */ - hasclears = 1; /* table will have to be cleared */ - } - } - if (g->gcstate == GCSpropagate) - linkgclist(h, g->grayagain); /* must retraverse it in atomic phase */ - else if (hasclears) - linkgclist(h, g->weak); /* has to be cleared later */ -} - - -/* -** Traverse an ephemeron table and link it to proper list. Returns true -** iff any object was marked during this traversal (which implies that -** convergence has to continue). During propagation phase, keep table -** in 'grayagain' list, to be visited again in the atomic phase. In -** the atomic phase, if table has any white->white entry, it has to -** be revisited during ephemeron convergence (as that key may turn -** black). Otherwise, if it has any white key, table has to be cleared -** (in the atomic phase). -*/ -static int traverseephemeron (global_State *g, Table *h) { - int marked = 0; /* true if an object is marked in this traversal */ - int hasclears = 0; /* true if table has white keys */ - int hasww = 0; /* true if table has entry "white-key -> white-value" */ - Node *n, *limit = gnodelast(h); - unsigned int i; - /* traverse array part */ - for (i = 0; i < h->sizearray; i++) { - if (valiswhite(&h->array[i])) { - marked = 1; - reallymarkobject(g, gcvalue(&h->array[i])); - } - } - /* traverse hash part */ - for (n = gnode(h, 0); n < limit; n++) { - checkdeadkey(n); - if (ttisnil(gval(n))) /* entry is empty? */ - removeentry(n); /* remove it */ - else if (iscleared(g, gkey(n))) { /* key is not marked (yet)? */ - hasclears = 1; /* table must be cleared */ - if (valiswhite(gval(n))) /* value not marked yet? */ - hasww = 1; /* white-white entry */ - } - else if (valiswhite(gval(n))) { /* value not marked yet? */ - marked = 1; - reallymarkobject(g, gcvalue(gval(n))); /* mark it now */ - } - } - /* link table into proper list */ - if (g->gcstate == GCSpropagate) - linkgclist(h, g->grayagain); /* must retraverse it in atomic phase */ - else if (hasww) /* table has white->white entries? */ - linkgclist(h, g->ephemeron); /* have to propagate again */ - else if (hasclears) /* table has white keys? */ - linkgclist(h, g->allweak); /* may have to clean white keys */ - return marked; -} - - -static void traversestrongtable (global_State *g, Table *h) { - Node *n, *limit = gnodelast(h); - unsigned int i; - for (i = 0; i < h->sizearray; i++) /* traverse array part */ - markvalue(g, &h->array[i]); - for (n = gnode(h, 0); n < limit; n++) { /* traverse hash part */ - checkdeadkey(n); - if (ttisnil(gval(n))) /* entry is empty? */ - removeentry(n); /* remove it */ - else { - lua_assert(!ttisnil(gkey(n))); - markvalue(g, gkey(n)); /* mark key */ - markvalue(g, gval(n)); /* mark value */ - } - } -} - - -static lu_mem traversetable (global_State *g, Table *h) { - const char *weakkey, *weakvalue; - const TValue *mode = gfasttm(g, h->metatable, TM_MODE); - markobjectN(g, h->metatable); - if (mode && ttisstring(mode) && /* is there a weak mode? */ - ((weakkey = strchr(svalue(mode), 'k')), - (weakvalue = strchr(svalue(mode), 'v')), - (weakkey || weakvalue))) { /* is really weak? */ - black2gray(h); /* keep table gray */ - if (!weakkey) /* strong keys? */ - traverseweakvalue(g, h); - else if (!weakvalue) /* strong values? */ - traverseephemeron(g, h); - else /* all weak */ - linkgclist(h, g->allweak); /* nothing to traverse now */ - } - else /* not weak */ - traversestrongtable(g, h); - return sizeof(Table) + sizeof(TValue) * h->sizearray + - sizeof(Node) * cast(size_t, allocsizenode(h)); -} - - -/* -** Traverse a prototype. (While a prototype is being build, its -** arrays can be larger than needed; the extra slots are filled with -** NULL, so the use of 'markobjectN') -*/ -static int traverseproto (global_State *g, Proto *f) { - int i; - if (f->cache && iswhite(f->cache)) - f->cache = NULL; /* allow cache to be collected */ - markobjectN(g, f->source); - for (i = 0; i < f->sizek; i++) /* mark literals */ - markvalue(g, &f->k[i]); - for (i = 0; i < f->sizeupvalues; i++) /* mark upvalue names */ - markobjectN(g, f->upvalues[i].name); - for (i = 0; i < f->sizep; i++) /* mark nested protos */ - markobjectN(g, f->p[i]); - for (i = 0; i < f->sizelocvars; i++) /* mark local-variable names */ - markobjectN(g, f->locvars[i].varname); - return sizeof(Proto) + sizeof(Instruction) * f->sizecode + - sizeof(Proto *) * f->sizep + - sizeof(TValue) * f->sizek + - sizeof(int) * f->sizelineinfo + - sizeof(LocVar) * f->sizelocvars + - sizeof(Upvaldesc) * f->sizeupvalues; -} - - -static lu_mem traverseCclosure (global_State *g, CClosure *cl) { - int i; - for (i = 0; i < cl->nupvalues; i++) /* mark its upvalues */ - markvalue(g, &cl->upvalue[i]); - return sizeCclosure(cl->nupvalues); -} - -/* -** open upvalues point to values in a thread, so those values should -** be marked when the thread is traversed except in the atomic phase -** (because then the value cannot be changed by the thread and the -** thread may not be traversed again) -*/ -static lu_mem traverseLclosure (global_State *g, LClosure *cl) { - int i; - markobjectN(g, cl->p); /* mark its prototype */ - for (i = 0; i < cl->nupvalues; i++) { /* mark its upvalues */ - UpVal *uv = cl->upvals[i]; - if (uv != NULL) { - if (upisopen(uv) && g->gcstate != GCSinsideatomic) - uv->u.open.touched = 1; /* can be marked in 'remarkupvals' */ - else - markvalue(g, uv->v); - } - } - return sizeLclosure(cl->nupvalues); -} - - -static lu_mem traversethread (global_State *g, lua_State *th) { - StkId o = th->stack; - if (o == NULL) - return 1; /* stack not completely built yet */ - lua_assert(g->gcstate == GCSinsideatomic || - th->openupval == NULL || isintwups(th)); - for (; o < th->top; o++) /* mark live elements in the stack */ - markvalue(g, o); - if (g->gcstate == GCSinsideatomic) { /* final traversal? */ - StkId lim = th->stack + th->stacksize; /* real end of stack */ - for (; o < lim; o++) /* clear not-marked stack slice */ - setnilvalue(o); - /* 'remarkupvals' may have removed thread from 'twups' list */ - if (!isintwups(th) && th->openupval != NULL) { - th->twups = g->twups; /* link it back to the list */ - g->twups = th; - } - } - else if (g->gckind != KGC_EMERGENCY) - luaD_shrinkstack(th); /* do not change stack in emergency cycle */ - return (sizeof(lua_State) + sizeof(TValue) * th->stacksize + - sizeof(CallInfo) * th->nci); -} - - -/* -** traverse one gray object, turning it to black (except for threads, -** which are always gray). -*/ -static void propagatemark (global_State *g) { - lu_mem size; - GCObject *o = g->gray; - lua_assert(isgray(o)); - gray2black(o); - switch (o->tt) { - case LUA_TTABLE: { - Table *h = gco2t(o); - g->gray = h->gclist; /* remove from 'gray' list */ - size = traversetable(g, h); - break; - } - case LUA_TLCL: { - LClosure *cl = gco2lcl(o); - g->gray = cl->gclist; /* remove from 'gray' list */ - size = traverseLclosure(g, cl); - break; - } - case LUA_TCCL: { - CClosure *cl = gco2ccl(o); - g->gray = cl->gclist; /* remove from 'gray' list */ - size = traverseCclosure(g, cl); - break; - } - case LUA_TTHREAD: { - lua_State *th = gco2th(o); - g->gray = th->gclist; /* remove from 'gray' list */ - linkgclist(th, g->grayagain); /* insert into 'grayagain' list */ - black2gray(o); - size = traversethread(g, th); - break; - } - case LUA_TPROTO: { - Proto *p = gco2p(o); - g->gray = p->gclist; /* remove from 'gray' list */ - size = traverseproto(g, p); - break; - } - default: lua_assert(0); return; - } - g->GCmemtrav += size; -} - - -static void propagateall (global_State *g) { - while (g->gray) propagatemark(g); -} - - -static void convergeephemerons (global_State *g) { - int changed; - do { - GCObject *w; - GCObject *next = g->ephemeron; /* get ephemeron list */ - g->ephemeron = NULL; /* tables may return to this list when traversed */ - changed = 0; - while ((w = next) != NULL) { - next = gco2t(w)->gclist; - if (traverseephemeron(g, gco2t(w))) { /* traverse marked some value? */ - propagateall(g); /* propagate changes */ - changed = 1; /* will have to revisit all ephemeron tables */ - } - } - } while (changed); -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Sweep Functions -** ======================================================= -*/ - - -/* -** clear entries with unmarked keys from all weaktables in list 'l' up -** to element 'f' -*/ -static void clearkeys (global_State *g, GCObject *l, GCObject *f) { - for (; l != f; l = gco2t(l)->gclist) { - Table *h = gco2t(l); - Node *n, *limit = gnodelast(h); - for (n = gnode(h, 0); n < limit; n++) { - if (!ttisnil(gval(n)) && (iscleared(g, gkey(n)))) { - setnilvalue(gval(n)); /* remove value ... */ - removeentry(n); /* and remove entry from table */ - } - } - } -} - - -/* -** clear entries with unmarked values from all weaktables in list 'l' up -** to element 'f' -*/ -static void clearvalues (global_State *g, GCObject *l, GCObject *f) { - for (; l != f; l = gco2t(l)->gclist) { - Table *h = gco2t(l); - Node *n, *limit = gnodelast(h); - unsigned int i; - for (i = 0; i < h->sizearray; i++) { - TValue *o = &h->array[i]; - if (iscleared(g, o)) /* value was collected? */ - setnilvalue(o); /* remove value */ - } - for (n = gnode(h, 0); n < limit; n++) { - if (!ttisnil(gval(n)) && iscleared(g, gval(n))) { - setnilvalue(gval(n)); /* remove value ... */ - removeentry(n); /* and remove entry from table */ - } - } - } -} - - -void luaC_upvdeccount (lua_State *L, UpVal *uv) { - lua_assert(uv->refcount > 0); - uv->refcount--; - if (uv->refcount == 0 && !upisopen(uv)) - luaM_free(L, uv); -} - - -static void freeLclosure (lua_State *L, LClosure *cl) { - int i; - for (i = 0; i < cl->nupvalues; i++) { - UpVal *uv = cl->upvals[i]; - if (uv) - luaC_upvdeccount(L, uv); - } - luaM_freemem(L, cl, sizeLclosure(cl->nupvalues)); -} - - -static void freeobj (lua_State *L, GCObject *o) { - switch (o->tt) { - case LUA_TPROTO: luaF_freeproto(L, gco2p(o)); break; - case LUA_TLCL: { - freeLclosure(L, gco2lcl(o)); - break; - } - case LUA_TCCL: { - luaM_freemem(L, o, sizeCclosure(gco2ccl(o)->nupvalues)); - break; - } - case LUA_TTABLE: luaH_free(L, gco2t(o)); break; - case LUA_TTHREAD: luaE_freethread(L, gco2th(o)); break; - case LUA_TUSERDATA: luaM_freemem(L, o, sizeudata(gco2u(o))); break; - case LUA_TSHRSTR: - luaS_remove(L, gco2ts(o)); /* remove it from hash table */ - luaM_freemem(L, o, sizelstring(gco2ts(o)->shrlen)); - break; - case LUA_TLNGSTR: { - luaM_freemem(L, o, sizelstring(gco2ts(o)->u.lnglen)); - break; - } - default: lua_assert(0); - } -} - - -#define sweepwholelist(L,p) sweeplist(L,p,MAX_LUMEM) -static GCObject **sweeplist (lua_State *L, GCObject **p, lu_mem count); - - -/* -** sweep at most 'count' elements from a list of GCObjects erasing dead -** objects, where a dead object is one marked with the old (non current) -** white; change all non-dead objects back to white, preparing for next -** collection cycle. Return where to continue the traversal or NULL if -** list is finished. -*/ -static GCObject **sweeplist (lua_State *L, GCObject **p, lu_mem count) { - global_State *g = G(L); - int ow = otherwhite(g); - int white = luaC_white(g); /* current white */ - while (*p != NULL && count-- > 0) { - GCObject *curr = *p; - int marked = curr->marked; - if (isdeadm(ow, marked)) { /* is 'curr' dead? */ - *p = curr->next; /* remove 'curr' from list */ - freeobj(L, curr); /* erase 'curr' */ - } - else { /* change mark to 'white' */ - curr->marked = cast_byte((marked & maskcolors) | white); - p = &curr->next; /* go to next element */ - } - } - return (*p == NULL) ? NULL : p; -} - - -/* -** sweep a list until a live object (or end of list) -*/ -static GCObject **sweeptolive (lua_State *L, GCObject **p) { - GCObject **old = p; - do { - p = sweeplist(L, p, 1); - } while (p == old); - return p; -} - -/* }====================================================== */ - - -/* -** {====================================================== -** Finalization -** ======================================================= -*/ - -/* -** If possible, shrink string table -*/ -static void checkSizes (lua_State *L, global_State *g) { - if (g->gckind != KGC_EMERGENCY) { - l_mem olddebt = g->GCdebt; - if (g->strt.nuse < g->strt.size / 4) /* string table too big? */ - luaS_resize(L, g->strt.size / 2); /* shrink it a little */ - g->GCestimate += g->GCdebt - olddebt; /* update estimate */ - } -} - - -static GCObject *udata2finalize (global_State *g) { - GCObject *o = g->tobefnz; /* get first element */ - lua_assert(tofinalize(o)); - g->tobefnz = o->next; /* remove it from 'tobefnz' list */ - o->next = g->allgc; /* return it to 'allgc' list */ - g->allgc = o; - resetbit(o->marked, FINALIZEDBIT); /* object is "normal" again */ - if (issweepphase(g)) - makewhite(g, o); /* "sweep" object */ - return o; -} - - -static void dothecall (lua_State *L, void *ud) { - UNUSED(ud); - luaD_callnoyield(L, L->top - 2, 0); -} - - -static void GCTM (lua_State *L, int propagateerrors) { - global_State *g = G(L); - const TValue *tm; - TValue v; - setgcovalue(L, &v, udata2finalize(g)); - tm = luaT_gettmbyobj(L, &v, TM_GC); - if (tm != NULL && ttisfunction(tm)) { /* is there a finalizer? */ - int status; - lu_byte oldah = L->allowhook; - int running = g->gcrunning; - L->allowhook = 0; /* stop debug hooks during GC metamethod */ - g->gcrunning = 0; /* avoid GC steps */ - setobj2s(L, L->top, tm); /* push finalizer... */ - setobj2s(L, L->top + 1, &v); /* ... and its argument */ - L->top += 2; /* and (next line) call the finalizer */ - L->ci->callstatus |= CIST_FIN; /* will run a finalizer */ - status = luaD_pcall(L, dothecall, NULL, savestack(L, L->top - 2), 0); - L->ci->callstatus &= ~CIST_FIN; /* not running a finalizer anymore */ - L->allowhook = oldah; /* restore hooks */ - g->gcrunning = running; /* restore state */ - if (status != LUA_OK && propagateerrors) { /* error while running __gc? */ - if (status == LUA_ERRRUN) { /* is there an error object? */ - const char *msg = (ttisstring(L->top - 1)) - ? svalue(L->top - 1) - : "no message"; - luaO_pushfstring(L, "error in __gc metamethod (%s)", msg); - status = LUA_ERRGCMM; /* error in __gc metamethod */ - } - luaD_throw(L, status); /* re-throw error */ - } - } -} - - -/* -** call a few (up to 'g->gcfinnum') finalizers -*/ -static int runafewfinalizers (lua_State *L) { - global_State *g = G(L); - unsigned int i; - lua_assert(!g->tobefnz || g->gcfinnum > 0); - for (i = 0; g->tobefnz && i < g->gcfinnum; i++) - GCTM(L, 1); /* call one finalizer */ - g->gcfinnum = (!g->tobefnz) ? 0 /* nothing more to finalize? */ - : g->gcfinnum * 2; /* else call a few more next time */ - return i; -} - - -/* -** call all pending finalizers -*/ -static void callallpendingfinalizers (lua_State *L) { - global_State *g = G(L); - while (g->tobefnz) - GCTM(L, 0); -} - - -/* -** find last 'next' field in list 'p' list (to add elements in its end) -*/ -static GCObject **findlast (GCObject **p) { - while (*p != NULL) - p = &(*p)->next; - return p; -} - - -/* -** move all unreachable objects (or 'all' objects) that need -** finalization from list 'finobj' to list 'tobefnz' (to be finalized) -*/ -static void separatetobefnz (global_State *g, int all) { - GCObject *curr; - GCObject **p = &g->finobj; - GCObject **lastnext = findlast(&g->tobefnz); - while ((curr = *p) != NULL) { /* traverse all finalizable objects */ - lua_assert(tofinalize(curr)); - if (!(iswhite(curr) || all)) /* not being collected? */ - p = &curr->next; /* don't bother with it */ - else { - *p = curr->next; /* remove 'curr' from 'finobj' list */ - curr->next = *lastnext; /* link at the end of 'tobefnz' list */ - *lastnext = curr; - lastnext = &curr->next; - } - } -} - - -/* -** if object 'o' has a finalizer, remove it from 'allgc' list (must -** search the list to find it) and link it in 'finobj' list. -*/ -void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt) { - global_State *g = G(L); - if (tofinalize(o) || /* obj. is already marked... */ - gfasttm(g, mt, TM_GC) == NULL) /* or has no finalizer? */ - return; /* nothing to be done */ - else { /* move 'o' to 'finobj' list */ - GCObject **p; - if (issweepphase(g)) { - makewhite(g, o); /* "sweep" object 'o' */ - if (g->sweepgc == &o->next) /* should not remove 'sweepgc' object */ - g->sweepgc = sweeptolive(L, g->sweepgc); /* change 'sweepgc' */ - } - /* search for pointer pointing to 'o' */ - for (p = &g->allgc; *p != o; p = &(*p)->next) { /* empty */ } - *p = o->next; /* remove 'o' from 'allgc' list */ - o->next = g->finobj; /* link it in 'finobj' list */ - g->finobj = o; - l_setbit(o->marked, FINALIZEDBIT); /* mark it as such */ - } -} - -/* }====================================================== */ - - - -/* -** {====================================================== -** GC control -** ======================================================= -*/ - - -/* -** Set a reasonable "time" to wait before starting a new GC cycle; cycle -** will start when memory use hits threshold. (Division by 'estimate' -** should be OK: it cannot be zero (because Lua cannot even start with -** less than PAUSEADJ bytes). -*/ -static void setpause (global_State *g) { - l_mem threshold, debt; - l_mem estimate = g->GCestimate / PAUSEADJ; /* adjust 'estimate' */ - lua_assert(estimate > 0); - threshold = (g->gcpause < MAX_LMEM / estimate) /* overflow? */ - ? estimate * g->gcpause /* no overflow */ - : MAX_LMEM; /* overflow; truncate to maximum */ - debt = gettotalbytes(g) - threshold; - luaE_setdebt(g, debt); -} - - -/* -** Enter first sweep phase. -** The call to 'sweeplist' tries to make pointer point to an object -** inside the list (instead of to the header), so that the real sweep do -** not need to skip objects created between "now" and the start of the -** real sweep. -*/ -static void entersweep (lua_State *L) { - global_State *g = G(L); - g->gcstate = GCSswpallgc; - lua_assert(g->sweepgc == NULL); - g->sweepgc = sweeplist(L, &g->allgc, 1); -} - - -void luaC_freeallobjects (lua_State *L) { - global_State *g = G(L); - separatetobefnz(g, 1); /* separate all objects with finalizers */ - lua_assert(g->finobj == NULL); - callallpendingfinalizers(L); - lua_assert(g->tobefnz == NULL); - g->currentwhite = WHITEBITS; /* this "white" makes all objects look dead */ - g->gckind = KGC_NORMAL; - sweepwholelist(L, &g->finobj); - sweepwholelist(L, &g->allgc); - sweepwholelist(L, &g->fixedgc); /* collect fixed objects */ - lua_assert(g->strt.nuse == 0); -} - - -static l_mem atomic (lua_State *L) { - global_State *g = G(L); - l_mem work; - GCObject *origweak, *origall; - GCObject *grayagain = g->grayagain; /* save original list */ - lua_assert(g->ephemeron == NULL && g->weak == NULL); - lua_assert(!iswhite(g->mainthread)); - g->gcstate = GCSinsideatomic; - g->GCmemtrav = 0; /* start counting work */ - markobject(g, L); /* mark running thread */ - /* registry and global metatables may be changed by API */ - markvalue(g, &g->l_registry); - markmt(g); /* mark global metatables */ - /* remark occasional upvalues of (maybe) dead threads */ - remarkupvals(g); - propagateall(g); /* propagate changes */ - work = g->GCmemtrav; /* stop counting (do not recount 'grayagain') */ - g->gray = grayagain; - propagateall(g); /* traverse 'grayagain' list */ - g->GCmemtrav = 0; /* restart counting */ - convergeephemerons(g); - /* at this point, all strongly accessible objects are marked. */ - /* Clear values from weak tables, before checking finalizers */ - clearvalues(g, g->weak, NULL); - clearvalues(g, g->allweak, NULL); - origweak = g->weak; origall = g->allweak; - work += g->GCmemtrav; /* stop counting (objects being finalized) */ - separatetobefnz(g, 0); /* separate objects to be finalized */ - g->gcfinnum = 1; /* there may be objects to be finalized */ - markbeingfnz(g); /* mark objects that will be finalized */ - propagateall(g); /* remark, to propagate 'resurrection' */ - g->GCmemtrav = 0; /* restart counting */ - convergeephemerons(g); - /* at this point, all resurrected objects are marked. */ - /* remove dead objects from weak tables */ - clearkeys(g, g->ephemeron, NULL); /* clear keys from all ephemeron tables */ - clearkeys(g, g->allweak, NULL); /* clear keys from all 'allweak' tables */ - /* clear values from resurrected weak tables */ - clearvalues(g, g->weak, origweak); - clearvalues(g, g->allweak, origall); - luaS_clearcache(g); - g->currentwhite = cast_byte(otherwhite(g)); /* flip current white */ - work += g->GCmemtrav; /* complete counting */ - return work; /* estimate of memory marked by 'atomic' */ -} - - -static lu_mem sweepstep (lua_State *L, global_State *g, - int nextstate, GCObject **nextlist) { - if (g->sweepgc) { - l_mem olddebt = g->GCdebt; - g->sweepgc = sweeplist(L, g->sweepgc, GCSWEEPMAX); - g->GCestimate += g->GCdebt - olddebt; /* update estimate */ - if (g->sweepgc) /* is there still something to sweep? */ - return (GCSWEEPMAX * GCSWEEPCOST); - } - /* else enter next state */ - g->gcstate = nextstate; - g->sweepgc = nextlist; - return 0; -} - - -static lu_mem singlestep (lua_State *L) { - global_State *g = G(L); - switch (g->gcstate) { - case GCSpause: { - g->GCmemtrav = g->strt.size * sizeof(GCObject*); - restartcollection(g); - g->gcstate = GCSpropagate; - return g->GCmemtrav; - } - case GCSpropagate: { - g->GCmemtrav = 0; - lua_assert(g->gray); - propagatemark(g); - if (g->gray == NULL) /* no more gray objects? */ - g->gcstate = GCSatomic; /* finish propagate phase */ - return g->GCmemtrav; /* memory traversed in this step */ - } - case GCSatomic: { - lu_mem work; - propagateall(g); /* make sure gray list is empty */ - work = atomic(L); /* work is what was traversed by 'atomic' */ - entersweep(L); - g->GCestimate = gettotalbytes(g); /* first estimate */; - return work; - } - case GCSswpallgc: { /* sweep "regular" objects */ - return sweepstep(L, g, GCSswpfinobj, &g->finobj); - } - case GCSswpfinobj: { /* sweep objects with finalizers */ - return sweepstep(L, g, GCSswptobefnz, &g->tobefnz); - } - case GCSswptobefnz: { /* sweep objects to be finalized */ - return sweepstep(L, g, GCSswpend, NULL); - } - case GCSswpend: { /* finish sweeps */ - makewhite(g, g->mainthread); /* sweep main thread */ - checkSizes(L, g); - g->gcstate = GCScallfin; - return 0; - } - case GCScallfin: { /* call remaining finalizers */ - if (g->tobefnz && g->gckind != KGC_EMERGENCY) { - int n = runafewfinalizers(L); - return (n * GCFINALIZECOST); - } - else { /* emergency mode or no more finalizers */ - g->gcstate = GCSpause; /* finish collection */ - return 0; - } - } - default: lua_assert(0); return 0; - } -} - - -/* -** advances the garbage collector until it reaches a state allowed -** by 'statemask' -*/ -void luaC_runtilstate (lua_State *L, int statesmask) { - global_State *g = G(L); - while (!testbit(statesmask, g->gcstate)) - singlestep(L); -} - - -/* -** get GC debt and convert it from Kb to 'work units' (avoid zero debt -** and overflows) -*/ -static l_mem getdebt (global_State *g) { - l_mem debt = g->GCdebt; - int stepmul = g->gcstepmul; - if (debt <= 0) return 0; /* minimal debt */ - else { - debt = (debt / STEPMULADJ) + 1; - debt = (debt < MAX_LMEM / stepmul) ? debt * stepmul : MAX_LMEM; - return debt; - } -} - -/* -** performs a basic GC step when collector is running -*/ -void luaC_step (lua_State *L) { - global_State *g = G(L); - l_mem debt = getdebt(g); /* GC deficit (be paid now) */ - if (!g->gcrunning) { /* not running? */ - luaE_setdebt(g, -GCSTEPSIZE * 10); /* avoid being called too often */ - return; - } - do { /* repeat until pause or enough "credit" (negative debt) */ - lu_mem work = singlestep(L); /* perform one single step */ - debt -= work; - } while (debt > -GCSTEPSIZE && g->gcstate != GCSpause); - if (g->gcstate == GCSpause) - setpause(g); /* pause until next cycle */ - else { - debt = (debt / g->gcstepmul) * STEPMULADJ; /* convert 'work units' to Kb */ - luaE_setdebt(g, debt); - runafewfinalizers(L); - } -} - - -/* -** Performs a full GC cycle; if 'isemergency', set a flag to avoid -** some operations which could change the interpreter state in some -** unexpected ways (running finalizers and shrinking some structures). -** Before running the collection, check 'keepinvariant'; if it is true, -** there may be some objects marked as black, so the collector has -** to sweep all objects to turn them back to white (as white has not -** changed, nothing will be collected). -*/ -void luaC_fullgc (lua_State *L, int isemergency) { - global_State *g = G(L); - lua_assert(g->gckind == KGC_NORMAL); - if (isemergency) g->gckind = KGC_EMERGENCY; /* set flag */ - if (keepinvariant(g)) { /* black objects? */ - entersweep(L); /* sweep everything to turn them back to white */ - } - /* finish any pending sweep phase to start a new cycle */ - luaC_runtilstate(L, bitmask(GCSpause)); - luaC_runtilstate(L, ~bitmask(GCSpause)); /* start new collection */ - luaC_runtilstate(L, bitmask(GCScallfin)); /* run up to finalizers */ - /* estimate must be correct after a full GC cycle */ - lua_assert(g->GCestimate == gettotalbytes(g)); - luaC_runtilstate(L, bitmask(GCSpause)); /* finish collection */ - g->gckind = KGC_NORMAL; - setpause(g); -} - -/* }====================================================== */ - - diff --git a/deps/rcheevos/test/lua/src/lgc.h b/deps/rcheevos/test/lua/src/lgc.h deleted file mode 100644 index aed3e18a5f..0000000000 --- a/deps/rcheevos/test/lua/src/lgc.h +++ /dev/null @@ -1,147 +0,0 @@ -/* -** $Id: lgc.h,v 2.91 2015/12/21 13:02:14 roberto Exp $ -** Garbage Collector -** See Copyright Notice in lua.h -*/ - -#ifndef lgc_h -#define lgc_h - - -#include "lobject.h" -#include "lstate.h" - -/* -** Collectable objects may have one of three colors: white, which -** means the object is not marked; gray, which means the -** object is marked, but its references may be not marked; and -** black, which means that the object and all its references are marked. -** The main invariant of the garbage collector, while marking objects, -** is that a black object can never point to a white one. Moreover, -** any gray object must be in a "gray list" (gray, grayagain, weak, -** allweak, ephemeron) so that it can be visited again before finishing -** the collection cycle. These lists have no meaning when the invariant -** is not being enforced (e.g., sweep phase). -*/ - - - -/* how much to allocate before next GC step */ -#if !defined(GCSTEPSIZE) -/* ~100 small strings */ -#define GCSTEPSIZE (cast_int(100 * sizeof(TString))) -#endif - - -/* -** Possible states of the Garbage Collector -*/ -#define GCSpropagate 0 -#define GCSatomic 1 -#define GCSswpallgc 2 -#define GCSswpfinobj 3 -#define GCSswptobefnz 4 -#define GCSswpend 5 -#define GCScallfin 6 -#define GCSpause 7 - - -#define issweepphase(g) \ - (GCSswpallgc <= (g)->gcstate && (g)->gcstate <= GCSswpend) - - -/* -** macro to tell when main invariant (white objects cannot point to black -** ones) must be kept. During a collection, the sweep -** phase may break the invariant, as objects turned white may point to -** still-black objects. The invariant is restored when sweep ends and -** all objects are white again. -*/ - -#define keepinvariant(g) ((g)->gcstate <= GCSatomic) - - -/* -** some useful bit tricks -*/ -#define resetbits(x,m) ((x) &= cast(lu_byte, ~(m))) -#define setbits(x,m) ((x) |= (m)) -#define testbits(x,m) ((x) & (m)) -#define bitmask(b) (1<<(b)) -#define bit2mask(b1,b2) (bitmask(b1) | bitmask(b2)) -#define l_setbit(x,b) setbits(x, bitmask(b)) -#define resetbit(x,b) resetbits(x, bitmask(b)) -#define testbit(x,b) testbits(x, bitmask(b)) - - -/* Layout for bit use in 'marked' field: */ -#define WHITE0BIT 0 /* object is white (type 0) */ -#define WHITE1BIT 1 /* object is white (type 1) */ -#define BLACKBIT 2 /* object is black */ -#define FINALIZEDBIT 3 /* object has been marked for finalization */ -/* bit 7 is currently used by tests (luaL_checkmemory) */ - -#define WHITEBITS bit2mask(WHITE0BIT, WHITE1BIT) - - -#define iswhite(x) testbits((x)->marked, WHITEBITS) -#define isblack(x) testbit((x)->marked, BLACKBIT) -#define isgray(x) /* neither white nor black */ \ - (!testbits((x)->marked, WHITEBITS | bitmask(BLACKBIT))) - -#define tofinalize(x) testbit((x)->marked, FINALIZEDBIT) - -#define otherwhite(g) ((g)->currentwhite ^ WHITEBITS) -#define isdeadm(ow,m) (!(((m) ^ WHITEBITS) & (ow))) -#define isdead(g,v) isdeadm(otherwhite(g), (v)->marked) - -#define changewhite(x) ((x)->marked ^= WHITEBITS) -#define gray2black(x) l_setbit((x)->marked, BLACKBIT) - -#define luaC_white(g) cast(lu_byte, (g)->currentwhite & WHITEBITS) - - -/* -** Does one step of collection when debt becomes positive. 'pre'/'pos' -** allows some adjustments to be done only when needed. macro -** 'condchangemem' is used only for heavy tests (forcing a full -** GC cycle on every opportunity) -*/ -#define luaC_condGC(L,pre,pos) \ - { if (G(L)->GCdebt > 0) { pre; luaC_step(L); pos;}; \ - condchangemem(L,pre,pos); } - -/* more often than not, 'pre'/'pos' are empty */ -#define luaC_checkGC(L) luaC_condGC(L,(void)0,(void)0) - - -#define luaC_barrier(L,p,v) ( \ - (iscollectable(v) && isblack(p) && iswhite(gcvalue(v))) ? \ - luaC_barrier_(L,obj2gco(p),gcvalue(v)) : cast_void(0)) - -#define luaC_barrierback(L,p,v) ( \ - (iscollectable(v) && isblack(p) && iswhite(gcvalue(v))) ? \ - luaC_barrierback_(L,p) : cast_void(0)) - -#define luaC_objbarrier(L,p,o) ( \ - (isblack(p) && iswhite(o)) ? \ - luaC_barrier_(L,obj2gco(p),obj2gco(o)) : cast_void(0)) - -#define luaC_upvalbarrier(L,uv) ( \ - (iscollectable((uv)->v) && !upisopen(uv)) ? \ - luaC_upvalbarrier_(L,uv) : cast_void(0)) - -LUAI_FUNC void luaC_fix (lua_State *L, GCObject *o); -LUAI_FUNC void luaC_freeallobjects (lua_State *L); -LUAI_FUNC void luaC_step (lua_State *L); -LUAI_FUNC void luaC_runtilstate (lua_State *L, int statesmask); -LUAI_FUNC void luaC_fullgc (lua_State *L, int isemergency); -LUAI_FUNC GCObject *luaC_newobj (lua_State *L, int tt, size_t sz); -LUAI_FUNC void luaC_barrier_ (lua_State *L, GCObject *o, GCObject *v); -LUAI_FUNC void luaC_barrierback_ (lua_State *L, Table *o); -LUAI_FUNC void luaC_upvalbarrier_ (lua_State *L, UpVal *uv); -LUAI_FUNC void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt); -LUAI_FUNC void luaC_upvdeccount (lua_State *L, UpVal *uv); - - -#endif diff --git a/deps/rcheevos/test/lua/src/linit.c b/deps/rcheevos/test/lua/src/linit.c deleted file mode 100644 index afcaf98b24..0000000000 --- a/deps/rcheevos/test/lua/src/linit.c +++ /dev/null @@ -1,68 +0,0 @@ -/* -** $Id: linit.c,v 1.39 2016/12/04 20:17:24 roberto Exp $ -** Initialization of libraries for lua.c and other clients -** See Copyright Notice in lua.h -*/ - - -#define linit_c -#define LUA_LIB - -/* -** If you embed Lua in your program and need to open the standard -** libraries, call luaL_openlibs in your program. If you need a -** different set of libraries, copy this file to your project and edit -** it to suit your needs. -** -** You can also *preload* libraries, so that a later 'require' can -** open the library, which is already linked to the application. -** For that, do the following code: -** -** luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE); -** lua_pushcfunction(L, luaopen_modname); -** lua_setfield(L, -2, modname); -** lua_pop(L, 1); // remove PRELOAD table -*/ - -#include "lprefix.h" - - -#include - -#include "lua.h" - -#include "lualib.h" -#include "lauxlib.h" - - -/* -** these libs are loaded by lua.c and are readily available to any Lua -** program -*/ -static const luaL_Reg loadedlibs[] = { - {"_G", luaopen_base}, - {LUA_LOADLIBNAME, luaopen_package}, - {LUA_COLIBNAME, luaopen_coroutine}, - {LUA_TABLIBNAME, luaopen_table}, - {LUA_IOLIBNAME, luaopen_io}, - {LUA_OSLIBNAME, luaopen_os}, - {LUA_STRLIBNAME, luaopen_string}, - {LUA_MATHLIBNAME, luaopen_math}, - {LUA_UTF8LIBNAME, luaopen_utf8}, - {LUA_DBLIBNAME, luaopen_debug}, -#if defined(LUA_COMPAT_BITLIB) - {LUA_BITLIBNAME, luaopen_bit32}, -#endif - {NULL, NULL} -}; - - -LUALIB_API void luaL_openlibs (lua_State *L) { - const luaL_Reg *lib; - /* "require" functions from 'loadedlibs' and set results to global table */ - for (lib = loadedlibs; lib->func; lib++) { - luaL_requiref(L, lib->name, lib->func, 1); - lua_pop(L, 1); /* remove lib */ - } -} - diff --git a/deps/rcheevos/test/lua/src/liolib.c b/deps/rcheevos/test/lua/src/liolib.c deleted file mode 100644 index 156840358d..0000000000 --- a/deps/rcheevos/test/lua/src/liolib.c +++ /dev/null @@ -1,771 +0,0 @@ -/* -** $Id: liolib.c,v 2.151 2016/12/20 18:37:00 roberto Exp $ -** Standard I/O (and system) library -** See Copyright Notice in lua.h -*/ - -#define liolib_c -#define LUA_LIB - -#include "lprefix.h" - - -#include -#include -#include -#include -#include -#include - -#include "lua.h" - -#include "lauxlib.h" -#include "lualib.h" - - - - -/* -** Change this macro to accept other modes for 'fopen' besides -** the standard ones. -*/ -#if !defined(l_checkmode) - -/* accepted extensions to 'mode' in 'fopen' */ -#if !defined(L_MODEEXT) -#define L_MODEEXT "b" -#endif - -/* Check whether 'mode' matches '[rwa]%+?[L_MODEEXT]*' */ -static int l_checkmode (const char *mode) { - return (*mode != '\0' && strchr("rwa", *(mode++)) != NULL && - (*mode != '+' || (++mode, 1)) && /* skip if char is '+' */ - (strspn(mode, L_MODEEXT) == strlen(mode))); /* check extensions */ -} - -#endif - -/* -** {====================================================== -** l_popen spawns a new process connected to the current -** one through the file streams. -** ======================================================= -*/ - -#if !defined(l_popen) /* { */ - -#if defined(LUA_USE_POSIX) /* { */ - -#define l_popen(L,c,m) (fflush(NULL), popen(c,m)) -#define l_pclose(L,file) (pclose(file)) - -#elif defined(LUA_USE_WINDOWS) /* }{ */ - -#define l_popen(L,c,m) (_popen(c,m)) -#define l_pclose(L,file) (_pclose(file)) - -#else /* }{ */ - -/* ISO C definitions */ -#define l_popen(L,c,m) \ - ((void)((void)c, m), \ - luaL_error(L, "'popen' not supported"), \ - (FILE*)0) -#define l_pclose(L,file) ((void)L, (void)file, -1) - -#endif /* } */ - -#endif /* } */ - -/* }====================================================== */ - - -#if !defined(l_getc) /* { */ - -#if defined(LUA_USE_POSIX) -#define l_getc(f) getc_unlocked(f) -#define l_lockfile(f) flockfile(f) -#define l_unlockfile(f) funlockfile(f) -#else -#define l_getc(f) getc(f) -#define l_lockfile(f) ((void)0) -#define l_unlockfile(f) ((void)0) -#endif - -#endif /* } */ - - -/* -** {====================================================== -** l_fseek: configuration for longer offsets -** ======================================================= -*/ - -#if !defined(l_fseek) /* { */ - -#if defined(LUA_USE_POSIX) /* { */ - -#include - -#define l_fseek(f,o,w) fseeko(f,o,w) -#define l_ftell(f) ftello(f) -#define l_seeknum off_t - -#elif defined(LUA_USE_WINDOWS) && !defined(_CRTIMP_TYPEINFO) \ - && defined(_MSC_VER) && (_MSC_VER >= 1400) /* }{ */ - -/* Windows (but not DDK) and Visual C++ 2005 or higher */ -#define l_fseek(f,o,w) _fseeki64(f,o,w) -#define l_ftell(f) _ftelli64(f) -#define l_seeknum __int64 - -#else /* }{ */ - -/* ISO C definitions */ -#define l_fseek(f,o,w) fseek(f,o,w) -#define l_ftell(f) ftell(f) -#define l_seeknum long - -#endif /* } */ - -#endif /* } */ - -/* }====================================================== */ - - -#define IO_PREFIX "_IO_" -#define IOPREF_LEN (sizeof(IO_PREFIX)/sizeof(char) - 1) -#define IO_INPUT (IO_PREFIX "input") -#define IO_OUTPUT (IO_PREFIX "output") - - -typedef luaL_Stream LStream; - - -#define tolstream(L) ((LStream *)luaL_checkudata(L, 1, LUA_FILEHANDLE)) - -#define isclosed(p) ((p)->closef == NULL) - - -static int io_type (lua_State *L) { - LStream *p; - luaL_checkany(L, 1); - p = (LStream *)luaL_testudata(L, 1, LUA_FILEHANDLE); - if (p == NULL) - lua_pushnil(L); /* not a file */ - else if (isclosed(p)) - lua_pushliteral(L, "closed file"); - else - lua_pushliteral(L, "file"); - return 1; -} - - -static int f_tostring (lua_State *L) { - LStream *p = tolstream(L); - if (isclosed(p)) - lua_pushliteral(L, "file (closed)"); - else - lua_pushfstring(L, "file (%p)", p->f); - return 1; -} - - -static FILE *tofile (lua_State *L) { - LStream *p = tolstream(L); - if (isclosed(p)) - luaL_error(L, "attempt to use a closed file"); - lua_assert(p->f); - return p->f; -} - - -/* -** When creating file handles, always creates a 'closed' file handle -** before opening the actual file; so, if there is a memory error, the -** handle is in a consistent state. -*/ -static LStream *newprefile (lua_State *L) { - LStream *p = (LStream *)lua_newuserdata(L, sizeof(LStream)); - p->closef = NULL; /* mark file handle as 'closed' */ - luaL_setmetatable(L, LUA_FILEHANDLE); - return p; -} - - -/* -** Calls the 'close' function from a file handle. The 'volatile' avoids -** a bug in some versions of the Clang compiler (e.g., clang 3.0 for -** 32 bits). -*/ -static int aux_close (lua_State *L) { - LStream *p = tolstream(L); - volatile lua_CFunction cf = p->closef; - p->closef = NULL; /* mark stream as closed */ - return (*cf)(L); /* close it */ -} - - -static int io_close (lua_State *L) { - if (lua_isnone(L, 1)) /* no argument? */ - lua_getfield(L, LUA_REGISTRYINDEX, IO_OUTPUT); /* use standard output */ - tofile(L); /* make sure argument is an open stream */ - return aux_close(L); -} - - -static int f_gc (lua_State *L) { - LStream *p = tolstream(L); - if (!isclosed(p) && p->f != NULL) - aux_close(L); /* ignore closed and incompletely open files */ - return 0; -} - - -/* -** function to close regular files -*/ -static int io_fclose (lua_State *L) { - LStream *p = tolstream(L); - int res = fclose(p->f); - return luaL_fileresult(L, (res == 0), NULL); -} - - -static LStream *newfile (lua_State *L) { - LStream *p = newprefile(L); - p->f = NULL; - p->closef = &io_fclose; - return p; -} - - -static void opencheck (lua_State *L, const char *fname, const char *mode) { - LStream *p = newfile(L); - p->f = fopen(fname, mode); - if (p->f == NULL) - luaL_error(L, "cannot open file '%s' (%s)", fname, strerror(errno)); -} - - -static int io_open (lua_State *L) { - const char *filename = luaL_checkstring(L, 1); - const char *mode = luaL_optstring(L, 2, "r"); - LStream *p = newfile(L); - const char *md = mode; /* to traverse/check mode */ - luaL_argcheck(L, l_checkmode(md), 2, "invalid mode"); - p->f = fopen(filename, mode); - return (p->f == NULL) ? luaL_fileresult(L, 0, filename) : 1; -} - - -/* -** function to close 'popen' files -*/ -static int io_pclose (lua_State *L) { - LStream *p = tolstream(L); - return luaL_execresult(L, l_pclose(L, p->f)); -} - - -static int io_popen (lua_State *L) { - const char *filename = luaL_checkstring(L, 1); - const char *mode = luaL_optstring(L, 2, "r"); - LStream *p = newprefile(L); - p->f = l_popen(L, filename, mode); - p->closef = &io_pclose; - return (p->f == NULL) ? luaL_fileresult(L, 0, filename) : 1; -} - - -static int io_tmpfile (lua_State *L) { - LStream *p = newfile(L); - p->f = tmpfile(); - return (p->f == NULL) ? luaL_fileresult(L, 0, NULL) : 1; -} - - -static FILE *getiofile (lua_State *L, const char *findex) { - LStream *p; - lua_getfield(L, LUA_REGISTRYINDEX, findex); - p = (LStream *)lua_touserdata(L, -1); - if (isclosed(p)) - luaL_error(L, "standard %s file is closed", findex + IOPREF_LEN); - return p->f; -} - - -static int g_iofile (lua_State *L, const char *f, const char *mode) { - if (!lua_isnoneornil(L, 1)) { - const char *filename = lua_tostring(L, 1); - if (filename) - opencheck(L, filename, mode); - else { - tofile(L); /* check that it's a valid file handle */ - lua_pushvalue(L, 1); - } - lua_setfield(L, LUA_REGISTRYINDEX, f); - } - /* return current value */ - lua_getfield(L, LUA_REGISTRYINDEX, f); - return 1; -} - - -static int io_input (lua_State *L) { - return g_iofile(L, IO_INPUT, "r"); -} - - -static int io_output (lua_State *L) { - return g_iofile(L, IO_OUTPUT, "w"); -} - - -static int io_readline (lua_State *L); - - -/* -** maximum number of arguments to 'f:lines'/'io.lines' (it + 3 must fit -** in the limit for upvalues of a closure) -*/ -#define MAXARGLINE 250 - -static void aux_lines (lua_State *L, int toclose) { - int n = lua_gettop(L) - 1; /* number of arguments to read */ - luaL_argcheck(L, n <= MAXARGLINE, MAXARGLINE + 2, "too many arguments"); - lua_pushinteger(L, n); /* number of arguments to read */ - lua_pushboolean(L, toclose); /* close/not close file when finished */ - lua_rotate(L, 2, 2); /* move 'n' and 'toclose' to their positions */ - lua_pushcclosure(L, io_readline, 3 + n); -} - - -static int f_lines (lua_State *L) { - tofile(L); /* check that it's a valid file handle */ - aux_lines(L, 0); - return 1; -} - - -static int io_lines (lua_State *L) { - int toclose; - if (lua_isnone(L, 1)) lua_pushnil(L); /* at least one argument */ - if (lua_isnil(L, 1)) { /* no file name? */ - lua_getfield(L, LUA_REGISTRYINDEX, IO_INPUT); /* get default input */ - lua_replace(L, 1); /* put it at index 1 */ - tofile(L); /* check that it's a valid file handle */ - toclose = 0; /* do not close it after iteration */ - } - else { /* open a new file */ - const char *filename = luaL_checkstring(L, 1); - opencheck(L, filename, "r"); - lua_replace(L, 1); /* put file at index 1 */ - toclose = 1; /* close it after iteration */ - } - aux_lines(L, toclose); - return 1; -} - - -/* -** {====================================================== -** READ -** ======================================================= -*/ - - -/* maximum length of a numeral */ -#if !defined (L_MAXLENNUM) -#define L_MAXLENNUM 200 -#endif - - -/* auxiliary structure used by 'read_number' */ -typedef struct { - FILE *f; /* file being read */ - int c; /* current character (look ahead) */ - int n; /* number of elements in buffer 'buff' */ - char buff[L_MAXLENNUM + 1]; /* +1 for ending '\0' */ -} RN; - - -/* -** Add current char to buffer (if not out of space) and read next one -*/ -static int nextc (RN *rn) { - if (rn->n >= L_MAXLENNUM) { /* buffer overflow? */ - rn->buff[0] = '\0'; /* invalidate result */ - return 0; /* fail */ - } - else { - rn->buff[rn->n++] = rn->c; /* save current char */ - rn->c = l_getc(rn->f); /* read next one */ - return 1; - } -} - - -/* -** Accept current char if it is in 'set' (of size 2) -*/ -static int test2 (RN *rn, const char *set) { - if (rn->c == set[0] || rn->c == set[1]) - return nextc(rn); - else return 0; -} - - -/* -** Read a sequence of (hex)digits -*/ -static int readdigits (RN *rn, int hex) { - int count = 0; - while ((hex ? isxdigit(rn->c) : isdigit(rn->c)) && nextc(rn)) - count++; - return count; -} - - -/* -** Read a number: first reads a valid prefix of a numeral into a buffer. -** Then it calls 'lua_stringtonumber' to check whether the format is -** correct and to convert it to a Lua number -*/ -static int read_number (lua_State *L, FILE *f) { - RN rn; - int count = 0; - int hex = 0; - char decp[2]; - rn.f = f; rn.n = 0; - decp[0] = lua_getlocaledecpoint(); /* get decimal point from locale */ - decp[1] = '.'; /* always accept a dot */ - l_lockfile(rn.f); - do { rn.c = l_getc(rn.f); } while (isspace(rn.c)); /* skip spaces */ - test2(&rn, "-+"); /* optional signal */ - if (test2(&rn, "00")) { - if (test2(&rn, "xX")) hex = 1; /* numeral is hexadecimal */ - else count = 1; /* count initial '0' as a valid digit */ - } - count += readdigits(&rn, hex); /* integral part */ - if (test2(&rn, decp)) /* decimal point? */ - count += readdigits(&rn, hex); /* fractional part */ - if (count > 0 && test2(&rn, (hex ? "pP" : "eE"))) { /* exponent mark? */ - test2(&rn, "-+"); /* exponent signal */ - readdigits(&rn, 0); /* exponent digits */ - } - ungetc(rn.c, rn.f); /* unread look-ahead char */ - l_unlockfile(rn.f); - rn.buff[rn.n] = '\0'; /* finish string */ - if (lua_stringtonumber(L, rn.buff)) /* is this a valid number? */ - return 1; /* ok */ - else { /* invalid format */ - lua_pushnil(L); /* "result" to be removed */ - return 0; /* read fails */ - } -} - - -static int test_eof (lua_State *L, FILE *f) { - int c = getc(f); - ungetc(c, f); /* no-op when c == EOF */ - lua_pushliteral(L, ""); - return (c != EOF); -} - - -static int read_line (lua_State *L, FILE *f, int chop) { - luaL_Buffer b; - int c = '\0'; - luaL_buffinit(L, &b); - while (c != EOF && c != '\n') { /* repeat until end of line */ - char *buff = luaL_prepbuffer(&b); /* preallocate buffer */ - int i = 0; - l_lockfile(f); /* no memory errors can happen inside the lock */ - while (i < LUAL_BUFFERSIZE && (c = l_getc(f)) != EOF && c != '\n') - buff[i++] = c; - l_unlockfile(f); - luaL_addsize(&b, i); - } - if (!chop && c == '\n') /* want a newline and have one? */ - luaL_addchar(&b, c); /* add ending newline to result */ - luaL_pushresult(&b); /* close buffer */ - /* return ok if read something (either a newline or something else) */ - return (c == '\n' || lua_rawlen(L, -1) > 0); -} - - -static void read_all (lua_State *L, FILE *f) { - size_t nr; - luaL_Buffer b; - luaL_buffinit(L, &b); - do { /* read file in chunks of LUAL_BUFFERSIZE bytes */ - char *p = luaL_prepbuffer(&b); - nr = fread(p, sizeof(char), LUAL_BUFFERSIZE, f); - luaL_addsize(&b, nr); - } while (nr == LUAL_BUFFERSIZE); - luaL_pushresult(&b); /* close buffer */ -} - - -static int read_chars (lua_State *L, FILE *f, size_t n) { - size_t nr; /* number of chars actually read */ - char *p; - luaL_Buffer b; - luaL_buffinit(L, &b); - p = luaL_prepbuffsize(&b, n); /* prepare buffer to read whole block */ - nr = fread(p, sizeof(char), n, f); /* try to read 'n' chars */ - luaL_addsize(&b, nr); - luaL_pushresult(&b); /* close buffer */ - return (nr > 0); /* true iff read something */ -} - - -static int g_read (lua_State *L, FILE *f, int first) { - int nargs = lua_gettop(L) - 1; - int success; - int n; - clearerr(f); - if (nargs == 0) { /* no arguments? */ - success = read_line(L, f, 1); - n = first+1; /* to return 1 result */ - } - else { /* ensure stack space for all results and for auxlib's buffer */ - luaL_checkstack(L, nargs+LUA_MINSTACK, "too many arguments"); - success = 1; - for (n = first; nargs-- && success; n++) { - if (lua_type(L, n) == LUA_TNUMBER) { - size_t l = (size_t)luaL_checkinteger(L, n); - success = (l == 0) ? test_eof(L, f) : read_chars(L, f, l); - } - else { - const char *p = luaL_checkstring(L, n); - if (*p == '*') p++; /* skip optional '*' (for compatibility) */ - switch (*p) { - case 'n': /* number */ - success = read_number(L, f); - break; - case 'l': /* line */ - success = read_line(L, f, 1); - break; - case 'L': /* line with end-of-line */ - success = read_line(L, f, 0); - break; - case 'a': /* file */ - read_all(L, f); /* read entire file */ - success = 1; /* always success */ - break; - default: - return luaL_argerror(L, n, "invalid format"); - } - } - } - } - if (ferror(f)) - return luaL_fileresult(L, 0, NULL); - if (!success) { - lua_pop(L, 1); /* remove last result */ - lua_pushnil(L); /* push nil instead */ - } - return n - first; -} - - -static int io_read (lua_State *L) { - return g_read(L, getiofile(L, IO_INPUT), 1); -} - - -static int f_read (lua_State *L) { - return g_read(L, tofile(L), 2); -} - - -static int io_readline (lua_State *L) { - LStream *p = (LStream *)lua_touserdata(L, lua_upvalueindex(1)); - int i; - int n = (int)lua_tointeger(L, lua_upvalueindex(2)); - if (isclosed(p)) /* file is already closed? */ - return luaL_error(L, "file is already closed"); - lua_settop(L , 1); - luaL_checkstack(L, n, "too many arguments"); - for (i = 1; i <= n; i++) /* push arguments to 'g_read' */ - lua_pushvalue(L, lua_upvalueindex(3 + i)); - n = g_read(L, p->f, 2); /* 'n' is number of results */ - lua_assert(n > 0); /* should return at least a nil */ - if (lua_toboolean(L, -n)) /* read at least one value? */ - return n; /* return them */ - else { /* first result is nil: EOF or error */ - if (n > 1) { /* is there error information? */ - /* 2nd result is error message */ - return luaL_error(L, "%s", lua_tostring(L, -n + 1)); - } - if (lua_toboolean(L, lua_upvalueindex(3))) { /* generator created file? */ - lua_settop(L, 0); - lua_pushvalue(L, lua_upvalueindex(1)); - aux_close(L); /* close it */ - } - return 0; - } -} - -/* }====================================================== */ - - -static int g_write (lua_State *L, FILE *f, int arg) { - int nargs = lua_gettop(L) - arg; - int status = 1; - for (; nargs--; arg++) { - if (lua_type(L, arg) == LUA_TNUMBER) { - /* optimization: could be done exactly as for strings */ - int len = lua_isinteger(L, arg) - ? fprintf(f, LUA_INTEGER_FMT, - (LUAI_UACINT)lua_tointeger(L, arg)) - : fprintf(f, LUA_NUMBER_FMT, - (LUAI_UACNUMBER)lua_tonumber(L, arg)); - status = status && (len > 0); - } - else { - size_t l; - const char *s = luaL_checklstring(L, arg, &l); - status = status && (fwrite(s, sizeof(char), l, f) == l); - } - } - if (status) return 1; /* file handle already on stack top */ - else return luaL_fileresult(L, status, NULL); -} - - -static int io_write (lua_State *L) { - return g_write(L, getiofile(L, IO_OUTPUT), 1); -} - - -static int f_write (lua_State *L) { - FILE *f = tofile(L); - lua_pushvalue(L, 1); /* push file at the stack top (to be returned) */ - return g_write(L, f, 2); -} - - -static int f_seek (lua_State *L) { - static const int mode[] = {SEEK_SET, SEEK_CUR, SEEK_END}; - static const char *const modenames[] = {"set", "cur", "end", NULL}; - FILE *f = tofile(L); - int op = luaL_checkoption(L, 2, "cur", modenames); - lua_Integer p3 = luaL_optinteger(L, 3, 0); - l_seeknum offset = (l_seeknum)p3; - luaL_argcheck(L, (lua_Integer)offset == p3, 3, - "not an integer in proper range"); - op = l_fseek(f, offset, mode[op]); - if (op) - return luaL_fileresult(L, 0, NULL); /* error */ - else { - lua_pushinteger(L, (lua_Integer)l_ftell(f)); - return 1; - } -} - - -static int f_setvbuf (lua_State *L) { - static const int mode[] = {_IONBF, _IOFBF, _IOLBF}; - static const char *const modenames[] = {"no", "full", "line", NULL}; - FILE *f = tofile(L); - int op = luaL_checkoption(L, 2, NULL, modenames); - lua_Integer sz = luaL_optinteger(L, 3, LUAL_BUFFERSIZE); - int res = setvbuf(f, NULL, mode[op], (size_t)sz); - return luaL_fileresult(L, res == 0, NULL); -} - - - -static int io_flush (lua_State *L) { - return luaL_fileresult(L, fflush(getiofile(L, IO_OUTPUT)) == 0, NULL); -} - - -static int f_flush (lua_State *L) { - return luaL_fileresult(L, fflush(tofile(L)) == 0, NULL); -} - - -/* -** functions for 'io' library -*/ -static const luaL_Reg iolib[] = { - {"close", io_close}, - {"flush", io_flush}, - {"input", io_input}, - {"lines", io_lines}, - {"open", io_open}, - {"output", io_output}, - {"popen", io_popen}, - {"read", io_read}, - {"tmpfile", io_tmpfile}, - {"type", io_type}, - {"write", io_write}, - {NULL, NULL} -}; - - -/* -** methods for file handles -*/ -static const luaL_Reg flib[] = { - {"close", io_close}, - {"flush", f_flush}, - {"lines", f_lines}, - {"read", f_read}, - {"seek", f_seek}, - {"setvbuf", f_setvbuf}, - {"write", f_write}, - {"__gc", f_gc}, - {"__tostring", f_tostring}, - {NULL, NULL} -}; - - -static void createmeta (lua_State *L) { - luaL_newmetatable(L, LUA_FILEHANDLE); /* create metatable for file handles */ - lua_pushvalue(L, -1); /* push metatable */ - lua_setfield(L, -2, "__index"); /* metatable.__index = metatable */ - luaL_setfuncs(L, flib, 0); /* add file methods to new metatable */ - lua_pop(L, 1); /* pop new metatable */ -} - - -/* -** function to (not) close the standard files stdin, stdout, and stderr -*/ -static int io_noclose (lua_State *L) { - LStream *p = tolstream(L); - p->closef = &io_noclose; /* keep file opened */ - lua_pushnil(L); - lua_pushliteral(L, "cannot close standard file"); - return 2; -} - - -static void createstdfile (lua_State *L, FILE *f, const char *k, - const char *fname) { - LStream *p = newprefile(L); - p->f = f; - p->closef = &io_noclose; - if (k != NULL) { - lua_pushvalue(L, -1); - lua_setfield(L, LUA_REGISTRYINDEX, k); /* add file to registry */ - } - lua_setfield(L, -2, fname); /* add file to module */ -} - - -LUAMOD_API int luaopen_io (lua_State *L) { - luaL_newlib(L, iolib); /* new module */ - createmeta(L); - /* create (and set) default files */ - createstdfile(L, stdin, IO_INPUT, "stdin"); - createstdfile(L, stdout, IO_OUTPUT, "stdout"); - createstdfile(L, stderr, NULL, "stderr"); - return 1; -} - diff --git a/deps/rcheevos/test/lua/src/llex.c b/deps/rcheevos/test/lua/src/llex.c deleted file mode 100644 index 70328273f7..0000000000 --- a/deps/rcheevos/test/lua/src/llex.c +++ /dev/null @@ -1,565 +0,0 @@ -/* -** $Id: llex.c,v 2.96 2016/05/02 14:02:12 roberto Exp $ -** Lexical Analyzer -** See Copyright Notice in lua.h -*/ - -#define llex_c -#define LUA_CORE - -#include "lprefix.h" - - -#include -#include - -#include "lua.h" - -#include "lctype.h" -#include "ldebug.h" -#include "ldo.h" -#include "lgc.h" -#include "llex.h" -#include "lobject.h" -#include "lparser.h" -#include "lstate.h" -#include "lstring.h" -#include "ltable.h" -#include "lzio.h" - - - -#define next(ls) (ls->current = zgetc(ls->z)) - - - -#define currIsNewline(ls) (ls->current == '\n' || ls->current == '\r') - - -/* ORDER RESERVED */ -static const char *const luaX_tokens [] = { - "and", "break", "do", "else", "elseif", - "end", "false", "for", "function", "goto", "if", - "in", "local", "nil", "not", "or", "repeat", - "return", "then", "true", "until", "while", - "//", "..", "...", "==", ">=", "<=", "~=", - "<<", ">>", "::", "", - "", "", "", "" -}; - - -#define save_and_next(ls) (save(ls, ls->current), next(ls)) - - -static l_noret lexerror (LexState *ls, const char *msg, int token); - - -static void save (LexState *ls, int c) { - Mbuffer *b = ls->buff; - if (luaZ_bufflen(b) + 1 > luaZ_sizebuffer(b)) { - size_t newsize; - if (luaZ_sizebuffer(b) >= MAX_SIZE/2) - lexerror(ls, "lexical element too long", 0); - newsize = luaZ_sizebuffer(b) * 2; - luaZ_resizebuffer(ls->L, b, newsize); - } - b->buffer[luaZ_bufflen(b)++] = cast(char, c); -} - - -void luaX_init (lua_State *L) { - int i; - TString *e = luaS_newliteral(L, LUA_ENV); /* create env name */ - luaC_fix(L, obj2gco(e)); /* never collect this name */ - for (i=0; iextra = cast_byte(i+1); /* reserved word */ - } -} - - -const char *luaX_token2str (LexState *ls, int token) { - if (token < FIRST_RESERVED) { /* single-byte symbols? */ - lua_assert(token == cast_uchar(token)); - return luaO_pushfstring(ls->L, "'%c'", token); - } - else { - const char *s = luaX_tokens[token - FIRST_RESERVED]; - if (token < TK_EOS) /* fixed format (symbols and reserved words)? */ - return luaO_pushfstring(ls->L, "'%s'", s); - else /* names, strings, and numerals */ - return s; - } -} - - -static const char *txtToken (LexState *ls, int token) { - switch (token) { - case TK_NAME: case TK_STRING: - case TK_FLT: case TK_INT: - save(ls, '\0'); - return luaO_pushfstring(ls->L, "'%s'", luaZ_buffer(ls->buff)); - default: - return luaX_token2str(ls, token); - } -} - - -static l_noret lexerror (LexState *ls, const char *msg, int token) { - msg = luaG_addinfo(ls->L, msg, ls->source, ls->linenumber); - if (token) - luaO_pushfstring(ls->L, "%s near %s", msg, txtToken(ls, token)); - luaD_throw(ls->L, LUA_ERRSYNTAX); -} - - -l_noret luaX_syntaxerror (LexState *ls, const char *msg) { - lexerror(ls, msg, ls->t.token); -} - - -/* -** creates a new string and anchors it in scanner's table so that -** it will not be collected until the end of the compilation -** (by that time it should be anchored somewhere) -*/ -TString *luaX_newstring (LexState *ls, const char *str, size_t l) { - lua_State *L = ls->L; - TValue *o; /* entry for 'str' */ - TString *ts = luaS_newlstr(L, str, l); /* create new string */ - setsvalue2s(L, L->top++, ts); /* temporarily anchor it in stack */ - o = luaH_set(L, ls->h, L->top - 1); - if (ttisnil(o)) { /* not in use yet? */ - /* boolean value does not need GC barrier; - table has no metatable, so it does not need to invalidate cache */ - setbvalue(o, 1); /* t[string] = true */ - luaC_checkGC(L); - } - else { /* string already present */ - ts = tsvalue(keyfromval(o)); /* re-use value previously stored */ - } - L->top--; /* remove string from stack */ - return ts; -} - - -/* -** increment line number and skips newline sequence (any of -** \n, \r, \n\r, or \r\n) -*/ -static void inclinenumber (LexState *ls) { - int old = ls->current; - lua_assert(currIsNewline(ls)); - next(ls); /* skip '\n' or '\r' */ - if (currIsNewline(ls) && ls->current != old) - next(ls); /* skip '\n\r' or '\r\n' */ - if (++ls->linenumber >= MAX_INT) - lexerror(ls, "chunk has too many lines", 0); -} - - -void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, TString *source, - int firstchar) { - ls->t.token = 0; - ls->L = L; - ls->current = firstchar; - ls->lookahead.token = TK_EOS; /* no look-ahead token */ - ls->z = z; - ls->fs = NULL; - ls->linenumber = 1; - ls->lastline = 1; - ls->source = source; - ls->envn = luaS_newliteral(L, LUA_ENV); /* get env name */ - luaZ_resizebuffer(ls->L, ls->buff, LUA_MINBUFFER); /* initialize buffer */ -} - - - -/* -** ======================================================= -** LEXICAL ANALYZER -** ======================================================= -*/ - - -static int check_next1 (LexState *ls, int c) { - if (ls->current == c) { - next(ls); - return 1; - } - else return 0; -} - - -/* -** Check whether current char is in set 'set' (with two chars) and -** saves it -*/ -static int check_next2 (LexState *ls, const char *set) { - lua_assert(set[2] == '\0'); - if (ls->current == set[0] || ls->current == set[1]) { - save_and_next(ls); - return 1; - } - else return 0; -} - - -/* LUA_NUMBER */ -/* -** this function is quite liberal in what it accepts, as 'luaO_str2num' -** will reject ill-formed numerals. -*/ -static int read_numeral (LexState *ls, SemInfo *seminfo) { - TValue obj; - const char *expo = "Ee"; - int first = ls->current; - lua_assert(lisdigit(ls->current)); - save_and_next(ls); - if (first == '0' && check_next2(ls, "xX")) /* hexadecimal? */ - expo = "Pp"; - for (;;) { - if (check_next2(ls, expo)) /* exponent part? */ - check_next2(ls, "-+"); /* optional exponent sign */ - if (lisxdigit(ls->current)) - save_and_next(ls); - else if (ls->current == '.') - save_and_next(ls); - else break; - } - save(ls, '\0'); - if (luaO_str2num(luaZ_buffer(ls->buff), &obj) == 0) /* format error? */ - lexerror(ls, "malformed number", TK_FLT); - if (ttisinteger(&obj)) { - seminfo->i = ivalue(&obj); - return TK_INT; - } - else { - lua_assert(ttisfloat(&obj)); - seminfo->r = fltvalue(&obj); - return TK_FLT; - } -} - - -/* -** skip a sequence '[=*[' or ']=*]'; if sequence is well formed, return -** its number of '='s; otherwise, return a negative number (-1 iff there -** are no '='s after initial bracket) -*/ -static int skip_sep (LexState *ls) { - int count = 0; - int s = ls->current; - lua_assert(s == '[' || s == ']'); - save_and_next(ls); - while (ls->current == '=') { - save_and_next(ls); - count++; - } - return (ls->current == s) ? count : (-count) - 1; -} - - -static void read_long_string (LexState *ls, SemInfo *seminfo, int sep) { - int line = ls->linenumber; /* initial line (for error message) */ - save_and_next(ls); /* skip 2nd '[' */ - if (currIsNewline(ls)) /* string starts with a newline? */ - inclinenumber(ls); /* skip it */ - for (;;) { - switch (ls->current) { - case EOZ: { /* error */ - const char *what = (seminfo ? "string" : "comment"); - const char *msg = luaO_pushfstring(ls->L, - "unfinished long %s (starting at line %d)", what, line); - lexerror(ls, msg, TK_EOS); - break; /* to avoid warnings */ - } - case ']': { - if (skip_sep(ls) == sep) { - save_and_next(ls); /* skip 2nd ']' */ - goto endloop; - } - break; - } - case '\n': case '\r': { - save(ls, '\n'); - inclinenumber(ls); - if (!seminfo) luaZ_resetbuffer(ls->buff); /* avoid wasting space */ - break; - } - default: { - if (seminfo) save_and_next(ls); - else next(ls); - } - } - } endloop: - if (seminfo) - seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + (2 + sep), - luaZ_bufflen(ls->buff) - 2*(2 + sep)); -} - - -static void esccheck (LexState *ls, int c, const char *msg) { - if (!c) { - if (ls->current != EOZ) - save_and_next(ls); /* add current to buffer for error message */ - lexerror(ls, msg, TK_STRING); - } -} - - -static int gethexa (LexState *ls) { - save_and_next(ls); - esccheck (ls, lisxdigit(ls->current), "hexadecimal digit expected"); - return luaO_hexavalue(ls->current); -} - - -static int readhexaesc (LexState *ls) { - int r = gethexa(ls); - r = (r << 4) + gethexa(ls); - luaZ_buffremove(ls->buff, 2); /* remove saved chars from buffer */ - return r; -} - - -static unsigned long readutf8esc (LexState *ls) { - unsigned long r; - int i = 4; /* chars to be removed: '\', 'u', '{', and first digit */ - save_and_next(ls); /* skip 'u' */ - esccheck(ls, ls->current == '{', "missing '{'"); - r = gethexa(ls); /* must have at least one digit */ - while ((save_and_next(ls), lisxdigit(ls->current))) { - i++; - r = (r << 4) + luaO_hexavalue(ls->current); - esccheck(ls, r <= 0x10FFFF, "UTF-8 value too large"); - } - esccheck(ls, ls->current == '}', "missing '}'"); - next(ls); /* skip '}' */ - luaZ_buffremove(ls->buff, i); /* remove saved chars from buffer */ - return r; -} - - -static void utf8esc (LexState *ls) { - char buff[UTF8BUFFSZ]; - int n = luaO_utf8esc(buff, readutf8esc(ls)); - for (; n > 0; n--) /* add 'buff' to string */ - save(ls, buff[UTF8BUFFSZ - n]); -} - - -static int readdecesc (LexState *ls) { - int i; - int r = 0; /* result accumulator */ - for (i = 0; i < 3 && lisdigit(ls->current); i++) { /* read up to 3 digits */ - r = 10*r + ls->current - '0'; - save_and_next(ls); - } - esccheck(ls, r <= UCHAR_MAX, "decimal escape too large"); - luaZ_buffremove(ls->buff, i); /* remove read digits from buffer */ - return r; -} - - -static void read_string (LexState *ls, int del, SemInfo *seminfo) { - save_and_next(ls); /* keep delimiter (for error messages) */ - while (ls->current != del) { - switch (ls->current) { - case EOZ: - lexerror(ls, "unfinished string", TK_EOS); - break; /* to avoid warnings */ - case '\n': - case '\r': - lexerror(ls, "unfinished string", TK_STRING); - break; /* to avoid warnings */ - case '\\': { /* escape sequences */ - int c; /* final character to be saved */ - save_and_next(ls); /* keep '\\' for error messages */ - switch (ls->current) { - case 'a': c = '\a'; goto read_save; - case 'b': c = '\b'; goto read_save; - case 'f': c = '\f'; goto read_save; - case 'n': c = '\n'; goto read_save; - case 'r': c = '\r'; goto read_save; - case 't': c = '\t'; goto read_save; - case 'v': c = '\v'; goto read_save; - case 'x': c = readhexaesc(ls); goto read_save; - case 'u': utf8esc(ls); goto no_save; - case '\n': case '\r': - inclinenumber(ls); c = '\n'; goto only_save; - case '\\': case '\"': case '\'': - c = ls->current; goto read_save; - case EOZ: goto no_save; /* will raise an error next loop */ - case 'z': { /* zap following span of spaces */ - luaZ_buffremove(ls->buff, 1); /* remove '\\' */ - next(ls); /* skip the 'z' */ - while (lisspace(ls->current)) { - if (currIsNewline(ls)) inclinenumber(ls); - else next(ls); - } - goto no_save; - } - default: { - esccheck(ls, lisdigit(ls->current), "invalid escape sequence"); - c = readdecesc(ls); /* digital escape '\ddd' */ - goto only_save; - } - } - read_save: - next(ls); - /* go through */ - only_save: - luaZ_buffremove(ls->buff, 1); /* remove '\\' */ - save(ls, c); - /* go through */ - no_save: break; - } - default: - save_and_next(ls); - } - } - save_and_next(ls); /* skip delimiter */ - seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + 1, - luaZ_bufflen(ls->buff) - 2); -} - - -static int llex (LexState *ls, SemInfo *seminfo) { - luaZ_resetbuffer(ls->buff); - for (;;) { - switch (ls->current) { - case '\n': case '\r': { /* line breaks */ - inclinenumber(ls); - break; - } - case ' ': case '\f': case '\t': case '\v': { /* spaces */ - next(ls); - break; - } - case '-': { /* '-' or '--' (comment) */ - next(ls); - if (ls->current != '-') return '-'; - /* else is a comment */ - next(ls); - if (ls->current == '[') { /* long comment? */ - int sep = skip_sep(ls); - luaZ_resetbuffer(ls->buff); /* 'skip_sep' may dirty the buffer */ - if (sep >= 0) { - read_long_string(ls, NULL, sep); /* skip long comment */ - luaZ_resetbuffer(ls->buff); /* previous call may dirty the buff. */ - break; - } - } - /* else short comment */ - while (!currIsNewline(ls) && ls->current != EOZ) - next(ls); /* skip until end of line (or end of file) */ - break; - } - case '[': { /* long string or simply '[' */ - int sep = skip_sep(ls); - if (sep >= 0) { - read_long_string(ls, seminfo, sep); - return TK_STRING; - } - else if (sep != -1) /* '[=...' missing second bracket */ - lexerror(ls, "invalid long string delimiter", TK_STRING); - return '['; - } - case '=': { - next(ls); - if (check_next1(ls, '=')) return TK_EQ; - else return '='; - } - case '<': { - next(ls); - if (check_next1(ls, '=')) return TK_LE; - else if (check_next1(ls, '<')) return TK_SHL; - else return '<'; - } - case '>': { - next(ls); - if (check_next1(ls, '=')) return TK_GE; - else if (check_next1(ls, '>')) return TK_SHR; - else return '>'; - } - case '/': { - next(ls); - if (check_next1(ls, '/')) return TK_IDIV; - else return '/'; - } - case '~': { - next(ls); - if (check_next1(ls, '=')) return TK_NE; - else return '~'; - } - case ':': { - next(ls); - if (check_next1(ls, ':')) return TK_DBCOLON; - else return ':'; - } - case '"': case '\'': { /* short literal strings */ - read_string(ls, ls->current, seminfo); - return TK_STRING; - } - case '.': { /* '.', '..', '...', or number */ - save_and_next(ls); - if (check_next1(ls, '.')) { - if (check_next1(ls, '.')) - return TK_DOTS; /* '...' */ - else return TK_CONCAT; /* '..' */ - } - else if (!lisdigit(ls->current)) return '.'; - else return read_numeral(ls, seminfo); - } - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': { - return read_numeral(ls, seminfo); - } - case EOZ: { - return TK_EOS; - } - default: { - if (lislalpha(ls->current)) { /* identifier or reserved word? */ - TString *ts; - do { - save_and_next(ls); - } while (lislalnum(ls->current)); - ts = luaX_newstring(ls, luaZ_buffer(ls->buff), - luaZ_bufflen(ls->buff)); - seminfo->ts = ts; - if (isreserved(ts)) /* reserved word? */ - return ts->extra - 1 + FIRST_RESERVED; - else { - return TK_NAME; - } - } - else { /* single-char tokens (+ - / ...) */ - int c = ls->current; - next(ls); - return c; - } - } - } - } -} - - -void luaX_next (LexState *ls) { - ls->lastline = ls->linenumber; - if (ls->lookahead.token != TK_EOS) { /* is there a look-ahead token? */ - ls->t = ls->lookahead; /* use this one */ - ls->lookahead.token = TK_EOS; /* and discharge it */ - } - else - ls->t.token = llex(ls, &ls->t.seminfo); /* read next token */ -} - - -int luaX_lookahead (LexState *ls) { - lua_assert(ls->lookahead.token == TK_EOS); - ls->lookahead.token = llex(ls, &ls->lookahead.seminfo); - return ls->lookahead.token; -} - diff --git a/deps/rcheevos/test/lua/src/llex.h b/deps/rcheevos/test/lua/src/llex.h deleted file mode 100644 index 2363d87e40..0000000000 --- a/deps/rcheevos/test/lua/src/llex.h +++ /dev/null @@ -1,85 +0,0 @@ -/* -** $Id: llex.h,v 1.79 2016/05/02 14:02:12 roberto Exp $ -** Lexical Analyzer -** See Copyright Notice in lua.h -*/ - -#ifndef llex_h -#define llex_h - -#include "lobject.h" -#include "lzio.h" - - -#define FIRST_RESERVED 257 - - -#if !defined(LUA_ENV) -#define LUA_ENV "_ENV" -#endif - - -/* -* WARNING: if you change the order of this enumeration, -* grep "ORDER RESERVED" -*/ -enum RESERVED { - /* terminal symbols denoted by reserved words */ - TK_AND = FIRST_RESERVED, TK_BREAK, - TK_DO, TK_ELSE, TK_ELSEIF, TK_END, TK_FALSE, TK_FOR, TK_FUNCTION, - TK_GOTO, TK_IF, TK_IN, TK_LOCAL, TK_NIL, TK_NOT, TK_OR, TK_REPEAT, - TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE, - /* other terminal symbols */ - TK_IDIV, TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE, - TK_SHL, TK_SHR, - TK_DBCOLON, TK_EOS, - TK_FLT, TK_INT, TK_NAME, TK_STRING -}; - -/* number of reserved words */ -#define NUM_RESERVED (cast(int, TK_WHILE-FIRST_RESERVED+1)) - - -typedef union { - lua_Number r; - lua_Integer i; - TString *ts; -} SemInfo; /* semantics information */ - - -typedef struct Token { - int token; - SemInfo seminfo; -} Token; - - -/* state of the lexer plus state of the parser when shared by all - functions */ -typedef struct LexState { - int current; /* current character (charint) */ - int linenumber; /* input line counter */ - int lastline; /* line of last token 'consumed' */ - Token t; /* current token */ - Token lookahead; /* look ahead token */ - struct FuncState *fs; /* current function (parser) */ - struct lua_State *L; - ZIO *z; /* input stream */ - Mbuffer *buff; /* buffer for tokens */ - Table *h; /* to avoid collection/reuse strings */ - struct Dyndata *dyd; /* dynamic structures used by the parser */ - TString *source; /* current source name */ - TString *envn; /* environment variable name */ -} LexState; - - -LUAI_FUNC void luaX_init (lua_State *L); -LUAI_FUNC void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, - TString *source, int firstchar); -LUAI_FUNC TString *luaX_newstring (LexState *ls, const char *str, size_t l); -LUAI_FUNC void luaX_next (LexState *ls); -LUAI_FUNC int luaX_lookahead (LexState *ls); -LUAI_FUNC l_noret luaX_syntaxerror (LexState *ls, const char *s); -LUAI_FUNC const char *luaX_token2str (LexState *ls, int token); - - -#endif diff --git a/deps/rcheevos/test/lua/src/llimits.h b/deps/rcheevos/test/lua/src/llimits.h deleted file mode 100644 index f21377fef9..0000000000 --- a/deps/rcheevos/test/lua/src/llimits.h +++ /dev/null @@ -1,323 +0,0 @@ -/* -** $Id: llimits.h,v 1.141 2015/11/19 19:16:22 roberto Exp $ -** Limits, basic types, and some other 'installation-dependent' definitions -** See Copyright Notice in lua.h -*/ - -#ifndef llimits_h -#define llimits_h - - -#include -#include - - -#include "lua.h" - -/* -** 'lu_mem' and 'l_mem' are unsigned/signed integers big enough to count -** the total memory used by Lua (in bytes). Usually, 'size_t' and -** 'ptrdiff_t' should work, but we use 'long' for 16-bit machines. -*/ -#if defined(LUAI_MEM) /* { external definitions? */ -typedef LUAI_UMEM lu_mem; -typedef LUAI_MEM l_mem; -#elif LUAI_BITSINT >= 32 /* }{ */ -typedef size_t lu_mem; -typedef ptrdiff_t l_mem; -#else /* 16-bit ints */ /* }{ */ -typedef unsigned long lu_mem; -typedef long l_mem; -#endif /* } */ - - -/* chars used as small naturals (so that 'char' is reserved for characters) */ -typedef unsigned char lu_byte; - - -/* maximum value for size_t */ -#define MAX_SIZET ((size_t)(~(size_t)0)) - -/* maximum size visible for Lua (must be representable in a lua_Integer */ -#define MAX_SIZE (sizeof(size_t) < sizeof(lua_Integer) ? MAX_SIZET \ - : (size_t)(LUA_MAXINTEGER)) - - -#define MAX_LUMEM ((lu_mem)(~(lu_mem)0)) - -#define MAX_LMEM ((l_mem)(MAX_LUMEM >> 1)) - - -#define MAX_INT INT_MAX /* maximum value of an int */ - - -/* -** conversion of pointer to unsigned integer: -** this is for hashing only; there is no problem if the integer -** cannot hold the whole pointer value -*/ -#define point2uint(p) ((unsigned int)((size_t)(p) & UINT_MAX)) - - - -/* type to ensure maximum alignment */ -#if defined(LUAI_USER_ALIGNMENT_T) -typedef LUAI_USER_ALIGNMENT_T L_Umaxalign; -#else -typedef union { - lua_Number n; - double u; - void *s; - lua_Integer i; - long l; -} L_Umaxalign; -#endif - - - -/* types of 'usual argument conversions' for lua_Number and lua_Integer */ -typedef LUAI_UACNUMBER l_uacNumber; -typedef LUAI_UACINT l_uacInt; - - -/* internal assertions for in-house debugging */ -#if defined(lua_assert) -#define check_exp(c,e) (lua_assert(c), (e)) -/* to avoid problems with conditions too long */ -#define lua_longassert(c) ((c) ? (void)0 : lua_assert(0)) -#else -#define lua_assert(c) ((void)0) -#define check_exp(c,e) (e) -#define lua_longassert(c) ((void)0) -#endif - -/* -** assertion for checking API calls -*/ -#if !defined(luai_apicheck) -#define luai_apicheck(l,e) lua_assert(e) -#endif - -#define api_check(l,e,msg) luai_apicheck(l,(e) && msg) - - -/* macro to avoid warnings about unused variables */ -#if !defined(UNUSED) -#define UNUSED(x) ((void)(x)) -#endif - - -/* type casts (a macro highlights casts in the code) */ -#define cast(t, exp) ((t)(exp)) - -#define cast_void(i) cast(void, (i)) -#define cast_byte(i) cast(lu_byte, (i)) -#define cast_num(i) cast(lua_Number, (i)) -#define cast_int(i) cast(int, (i)) -#define cast_uchar(i) cast(unsigned char, (i)) - - -/* cast a signed lua_Integer to lua_Unsigned */ -#if !defined(l_castS2U) -#define l_castS2U(i) ((lua_Unsigned)(i)) -#endif - -/* -** cast a lua_Unsigned to a signed lua_Integer; this cast is -** not strict ISO C, but two-complement architectures should -** work fine. -*/ -#if !defined(l_castU2S) -#define l_castU2S(i) ((lua_Integer)(i)) -#endif - - -/* -** non-return type -*/ -#if defined(__GNUC__) -#define l_noret void __attribute__((noreturn)) -#elif defined(_MSC_VER) && _MSC_VER >= 1200 -#define l_noret void __declspec(noreturn) -#else -#define l_noret void -#endif - - - -/* -** maximum depth for nested C calls and syntactical nested non-terminals -** in a program. (Value must fit in an unsigned short int.) -*/ -#if !defined(LUAI_MAXCCALLS) -#define LUAI_MAXCCALLS 200 -#endif - - - -/* -** type for virtual-machine instructions; -** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h) -*/ -#if LUAI_BITSINT >= 32 -typedef unsigned int Instruction; -#else -typedef unsigned long Instruction; -#endif - - - -/* -** Maximum length for short strings, that is, strings that are -** internalized. (Cannot be smaller than reserved words or tags for -** metamethods, as these strings must be internalized; -** #("function") = 8, #("__newindex") = 10.) -*/ -#if !defined(LUAI_MAXSHORTLEN) -#define LUAI_MAXSHORTLEN 40 -#endif - - -/* -** Initial size for the string table (must be power of 2). -** The Lua core alone registers ~50 strings (reserved words + -** metaevent keys + a few others). Libraries would typically add -** a few dozens more. -*/ -#if !defined(MINSTRTABSIZE) -#define MINSTRTABSIZE 128 -#endif - - -/* -** Size of cache for strings in the API. 'N' is the number of -** sets (better be a prime) and "M" is the size of each set (M == 1 -** makes a direct cache.) -*/ -#if !defined(STRCACHE_N) -#define STRCACHE_N 53 -#define STRCACHE_M 2 -#endif - - -/* minimum size for string buffer */ -#if !defined(LUA_MINBUFFER) -#define LUA_MINBUFFER 32 -#endif - - -/* -** macros that are executed whenever program enters the Lua core -** ('lua_lock') and leaves the core ('lua_unlock') -*/ -#if !defined(lua_lock) -#define lua_lock(L) ((void) 0) -#define lua_unlock(L) ((void) 0) -#endif - -/* -** macro executed during Lua functions at points where the -** function can yield. -*/ -#if !defined(luai_threadyield) -#define luai_threadyield(L) {lua_unlock(L); lua_lock(L);} -#endif - - -/* -** these macros allow user-specific actions on threads when you defined -** LUAI_EXTRASPACE and need to do something extra when a thread is -** created/deleted/resumed/yielded. -*/ -#if !defined(luai_userstateopen) -#define luai_userstateopen(L) ((void)L) -#endif - -#if !defined(luai_userstateclose) -#define luai_userstateclose(L) ((void)L) -#endif - -#if !defined(luai_userstatethread) -#define luai_userstatethread(L,L1) ((void)L) -#endif - -#if !defined(luai_userstatefree) -#define luai_userstatefree(L,L1) ((void)L) -#endif - -#if !defined(luai_userstateresume) -#define luai_userstateresume(L,n) ((void)L) -#endif - -#if !defined(luai_userstateyield) -#define luai_userstateyield(L,n) ((void)L) -#endif - - - -/* -** The luai_num* macros define the primitive operations over numbers. -*/ - -/* floor division (defined as 'floor(a/b)') */ -#if !defined(luai_numidiv) -#define luai_numidiv(L,a,b) ((void)L, l_floor(luai_numdiv(L,a,b))) -#endif - -/* float division */ -#if !defined(luai_numdiv) -#define luai_numdiv(L,a,b) ((a)/(b)) -#endif - -/* -** modulo: defined as 'a - floor(a/b)*b'; this definition gives NaN when -** 'b' is huge, but the result should be 'a'. 'fmod' gives the result of -** 'a - trunc(a/b)*b', and therefore must be corrected when 'trunc(a/b) -** ~= floor(a/b)'. That happens when the division has a non-integer -** negative result, which is equivalent to the test below. -*/ -#if !defined(luai_nummod) -#define luai_nummod(L,a,b,m) \ - { (m) = l_mathop(fmod)(a,b); if ((m)*(b) < 0) (m) += (b); } -#endif - -/* exponentiation */ -#if !defined(luai_numpow) -#define luai_numpow(L,a,b) ((void)L, l_mathop(pow)(a,b)) -#endif - -/* the others are quite standard operations */ -#if !defined(luai_numadd) -#define luai_numadd(L,a,b) ((a)+(b)) -#define luai_numsub(L,a,b) ((a)-(b)) -#define luai_nummul(L,a,b) ((a)*(b)) -#define luai_numunm(L,a) (-(a)) -#define luai_numeq(a,b) ((a)==(b)) -#define luai_numlt(a,b) ((a)<(b)) -#define luai_numle(a,b) ((a)<=(b)) -#define luai_numisnan(a) (!luai_numeq((a), (a))) -#endif - - - - - -/* -** macro to control inclusion of some hard tests on stack reallocation -*/ -#if !defined(HARDSTACKTESTS) -#define condmovestack(L,pre,pos) ((void)0) -#else -/* realloc stack keeping its size */ -#define condmovestack(L,pre,pos) \ - { int sz_ = (L)->stacksize; pre; luaD_reallocstack((L), sz_); pos; } -#endif - -#if !defined(HARDMEMTESTS) -#define condchangemem(L,pre,pos) ((void)0) -#else -#define condchangemem(L,pre,pos) \ - { if (G(L)->gcrunning) { pre; luaC_fullgc(L, 0); pos; } } -#endif - -#endif diff --git a/deps/rcheevos/test/lua/src/lmathlib.c b/deps/rcheevos/test/lua/src/lmathlib.c deleted file mode 100644 index b7f8baee07..0000000000 --- a/deps/rcheevos/test/lua/src/lmathlib.c +++ /dev/null @@ -1,410 +0,0 @@ -/* -** $Id: lmathlib.c,v 1.119 2016/12/22 13:08:50 roberto Exp $ -** Standard mathematical library -** See Copyright Notice in lua.h -*/ - -#define lmathlib_c -#define LUA_LIB - -#include "lprefix.h" - - -#include -#include - -#include "lua.h" - -#include "lauxlib.h" -#include "lualib.h" - - -#undef PI -#define PI (l_mathop(3.141592653589793238462643383279502884)) - - -#if !defined(l_rand) /* { */ -#if defined(LUA_USE_POSIX) -#define l_rand() random() -#define l_srand(x) srandom(x) -#define L_RANDMAX 2147483647 /* (2^31 - 1), following POSIX */ -#else -#define l_rand() rand() -#define l_srand(x) srand(x) -#define L_RANDMAX RAND_MAX -#endif -#endif /* } */ - - -static int math_abs (lua_State *L) { - if (lua_isinteger(L, 1)) { - lua_Integer n = lua_tointeger(L, 1); - if (n < 0) n = (lua_Integer)(0u - (lua_Unsigned)n); - lua_pushinteger(L, n); - } - else - lua_pushnumber(L, l_mathop(fabs)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_sin (lua_State *L) { - lua_pushnumber(L, l_mathop(sin)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_cos (lua_State *L) { - lua_pushnumber(L, l_mathop(cos)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_tan (lua_State *L) { - lua_pushnumber(L, l_mathop(tan)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_asin (lua_State *L) { - lua_pushnumber(L, l_mathop(asin)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_acos (lua_State *L) { - lua_pushnumber(L, l_mathop(acos)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_atan (lua_State *L) { - lua_Number y = luaL_checknumber(L, 1); - lua_Number x = luaL_optnumber(L, 2, 1); - lua_pushnumber(L, l_mathop(atan2)(y, x)); - return 1; -} - - -static int math_toint (lua_State *L) { - int valid; - lua_Integer n = lua_tointegerx(L, 1, &valid); - if (valid) - lua_pushinteger(L, n); - else { - luaL_checkany(L, 1); - lua_pushnil(L); /* value is not convertible to integer */ - } - return 1; -} - - -static void pushnumint (lua_State *L, lua_Number d) { - lua_Integer n; - if (lua_numbertointeger(d, &n)) /* does 'd' fit in an integer? */ - lua_pushinteger(L, n); /* result is integer */ - else - lua_pushnumber(L, d); /* result is float */ -} - - -static int math_floor (lua_State *L) { - if (lua_isinteger(L, 1)) - lua_settop(L, 1); /* integer is its own floor */ - else { - lua_Number d = l_mathop(floor)(luaL_checknumber(L, 1)); - pushnumint(L, d); - } - return 1; -} - - -static int math_ceil (lua_State *L) { - if (lua_isinteger(L, 1)) - lua_settop(L, 1); /* integer is its own ceil */ - else { - lua_Number d = l_mathop(ceil)(luaL_checknumber(L, 1)); - pushnumint(L, d); - } - return 1; -} - - -static int math_fmod (lua_State *L) { - if (lua_isinteger(L, 1) && lua_isinteger(L, 2)) { - lua_Integer d = lua_tointeger(L, 2); - if ((lua_Unsigned)d + 1u <= 1u) { /* special cases: -1 or 0 */ - luaL_argcheck(L, d != 0, 2, "zero"); - lua_pushinteger(L, 0); /* avoid overflow with 0x80000... / -1 */ - } - else - lua_pushinteger(L, lua_tointeger(L, 1) % d); - } - else - lua_pushnumber(L, l_mathop(fmod)(luaL_checknumber(L, 1), - luaL_checknumber(L, 2))); - return 1; -} - - -/* -** next function does not use 'modf', avoiding problems with 'double*' -** (which is not compatible with 'float*') when lua_Number is not -** 'double'. -*/ -static int math_modf (lua_State *L) { - if (lua_isinteger(L ,1)) { - lua_settop(L, 1); /* number is its own integer part */ - lua_pushnumber(L, 0); /* no fractional part */ - } - else { - lua_Number n = luaL_checknumber(L, 1); - /* integer part (rounds toward zero) */ - lua_Number ip = (n < 0) ? l_mathop(ceil)(n) : l_mathop(floor)(n); - pushnumint(L, ip); - /* fractional part (test needed for inf/-inf) */ - lua_pushnumber(L, (n == ip) ? l_mathop(0.0) : (n - ip)); - } - return 2; -} - - -static int math_sqrt (lua_State *L) { - lua_pushnumber(L, l_mathop(sqrt)(luaL_checknumber(L, 1))); - return 1; -} - - -static int math_ult (lua_State *L) { - lua_Integer a = luaL_checkinteger(L, 1); - lua_Integer b = luaL_checkinteger(L, 2); - lua_pushboolean(L, (lua_Unsigned)a < (lua_Unsigned)b); - return 1; -} - -static int math_log (lua_State *L) { - lua_Number x = luaL_checknumber(L, 1); - lua_Number res; - if (lua_isnoneornil(L, 2)) - res = l_mathop(log)(x); - else { - lua_Number base = luaL_checknumber(L, 2); -#if !defined(LUA_USE_C89) - if (base == l_mathop(2.0)) - res = l_mathop(log2)(x); else -#endif - if (base == l_mathop(10.0)) - res = l_mathop(log10)(x); - else - res = l_mathop(log)(x)/l_mathop(log)(base); - } - lua_pushnumber(L, res); - return 1; -} - -static int math_exp (lua_State *L) { - lua_pushnumber(L, l_mathop(exp)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_deg (lua_State *L) { - lua_pushnumber(L, luaL_checknumber(L, 1) * (l_mathop(180.0) / PI)); - return 1; -} - -static int math_rad (lua_State *L) { - lua_pushnumber(L, luaL_checknumber(L, 1) * (PI / l_mathop(180.0))); - return 1; -} - - -static int math_min (lua_State *L) { - int n = lua_gettop(L); /* number of arguments */ - int imin = 1; /* index of current minimum value */ - int i; - luaL_argcheck(L, n >= 1, 1, "value expected"); - for (i = 2; i <= n; i++) { - if (lua_compare(L, i, imin, LUA_OPLT)) - imin = i; - } - lua_pushvalue(L, imin); - return 1; -} - - -static int math_max (lua_State *L) { - int n = lua_gettop(L); /* number of arguments */ - int imax = 1; /* index of current maximum value */ - int i; - luaL_argcheck(L, n >= 1, 1, "value expected"); - for (i = 2; i <= n; i++) { - if (lua_compare(L, imax, i, LUA_OPLT)) - imax = i; - } - lua_pushvalue(L, imax); - return 1; -} - -/* -** This function uses 'double' (instead of 'lua_Number') to ensure that -** all bits from 'l_rand' can be represented, and that 'RANDMAX + 1.0' -** will keep full precision (ensuring that 'r' is always less than 1.0.) -*/ -static int math_random (lua_State *L) { - lua_Integer low, up; - double r = (double)l_rand() * (1.0 / ((double)L_RANDMAX + 1.0)); - switch (lua_gettop(L)) { /* check number of arguments */ - case 0: { /* no arguments */ - lua_pushnumber(L, (lua_Number)r); /* Number between 0 and 1 */ - return 1; - } - case 1: { /* only upper limit */ - low = 1; - up = luaL_checkinteger(L, 1); - break; - } - case 2: { /* lower and upper limits */ - low = luaL_checkinteger(L, 1); - up = luaL_checkinteger(L, 2); - break; - } - default: return luaL_error(L, "wrong number of arguments"); - } - /* random integer in the interval [low, up] */ - luaL_argcheck(L, low <= up, 1, "interval is empty"); - luaL_argcheck(L, low >= 0 || up <= LUA_MAXINTEGER + low, 1, - "interval too large"); - r *= (double)(up - low) + 1.0; - lua_pushinteger(L, (lua_Integer)r + low); - return 1; -} - - -static int math_randomseed (lua_State *L) { - l_srand((unsigned int)(lua_Integer)luaL_checknumber(L, 1)); - (void)l_rand(); /* discard first value to avoid undesirable correlations */ - return 0; -} - - -static int math_type (lua_State *L) { - if (lua_type(L, 1) == LUA_TNUMBER) { - if (lua_isinteger(L, 1)) - lua_pushliteral(L, "integer"); - else - lua_pushliteral(L, "float"); - } - else { - luaL_checkany(L, 1); - lua_pushnil(L); - } - return 1; -} - - -/* -** {================================================================== -** Deprecated functions (for compatibility only) -** =================================================================== -*/ -#if defined(LUA_COMPAT_MATHLIB) - -static int math_cosh (lua_State *L) { - lua_pushnumber(L, l_mathop(cosh)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_sinh (lua_State *L) { - lua_pushnumber(L, l_mathop(sinh)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_tanh (lua_State *L) { - lua_pushnumber(L, l_mathop(tanh)(luaL_checknumber(L, 1))); - return 1; -} - -static int math_pow (lua_State *L) { - lua_Number x = luaL_checknumber(L, 1); - lua_Number y = luaL_checknumber(L, 2); - lua_pushnumber(L, l_mathop(pow)(x, y)); - return 1; -} - -static int math_frexp (lua_State *L) { - int e; - lua_pushnumber(L, l_mathop(frexp)(luaL_checknumber(L, 1), &e)); - lua_pushinteger(L, e); - return 2; -} - -static int math_ldexp (lua_State *L) { - lua_Number x = luaL_checknumber(L, 1); - int ep = (int)luaL_checkinteger(L, 2); - lua_pushnumber(L, l_mathop(ldexp)(x, ep)); - return 1; -} - -static int math_log10 (lua_State *L) { - lua_pushnumber(L, l_mathop(log10)(luaL_checknumber(L, 1))); - return 1; -} - -#endif -/* }================================================================== */ - - - -static const luaL_Reg mathlib[] = { - {"abs", math_abs}, - {"acos", math_acos}, - {"asin", math_asin}, - {"atan", math_atan}, - {"ceil", math_ceil}, - {"cos", math_cos}, - {"deg", math_deg}, - {"exp", math_exp}, - {"tointeger", math_toint}, - {"floor", math_floor}, - {"fmod", math_fmod}, - {"ult", math_ult}, - {"log", math_log}, - {"max", math_max}, - {"min", math_min}, - {"modf", math_modf}, - {"rad", math_rad}, - {"random", math_random}, - {"randomseed", math_randomseed}, - {"sin", math_sin}, - {"sqrt", math_sqrt}, - {"tan", math_tan}, - {"type", math_type}, -#if defined(LUA_COMPAT_MATHLIB) - {"atan2", math_atan}, - {"cosh", math_cosh}, - {"sinh", math_sinh}, - {"tanh", math_tanh}, - {"pow", math_pow}, - {"frexp", math_frexp}, - {"ldexp", math_ldexp}, - {"log10", math_log10}, -#endif - /* placeholders */ - {"pi", NULL}, - {"huge", NULL}, - {"maxinteger", NULL}, - {"mininteger", NULL}, - {NULL, NULL} -}; - - -/* -** Open math library -*/ -LUAMOD_API int luaopen_math (lua_State *L) { - luaL_newlib(L, mathlib); - lua_pushnumber(L, PI); - lua_setfield(L, -2, "pi"); - lua_pushnumber(L, (lua_Number)HUGE_VAL); - lua_setfield(L, -2, "huge"); - lua_pushinteger(L, LUA_MAXINTEGER); - lua_setfield(L, -2, "maxinteger"); - lua_pushinteger(L, LUA_MININTEGER); - lua_setfield(L, -2, "mininteger"); - return 1; -} - diff --git a/deps/rcheevos/test/lua/src/lmem.c b/deps/rcheevos/test/lua/src/lmem.c deleted file mode 100644 index 0a0476cc77..0000000000 --- a/deps/rcheevos/test/lua/src/lmem.c +++ /dev/null @@ -1,100 +0,0 @@ -/* -** $Id: lmem.c,v 1.91 2015/03/06 19:45:54 roberto Exp $ -** Interface to Memory Manager -** See Copyright Notice in lua.h -*/ - -#define lmem_c -#define LUA_CORE - -#include "lprefix.h" - - -#include - -#include "lua.h" - -#include "ldebug.h" -#include "ldo.h" -#include "lgc.h" -#include "lmem.h" -#include "lobject.h" -#include "lstate.h" - - - -/* -** About the realloc function: -** void * frealloc (void *ud, void *ptr, size_t osize, size_t nsize); -** ('osize' is the old size, 'nsize' is the new size) -** -** * frealloc(ud, NULL, x, s) creates a new block of size 's' (no -** matter 'x'). -** -** * frealloc(ud, p, x, 0) frees the block 'p' -** (in this specific case, frealloc must return NULL); -** particularly, frealloc(ud, NULL, 0, 0) does nothing -** (which is equivalent to free(NULL) in ISO C) -** -** frealloc returns NULL if it cannot create or reallocate the area -** (any reallocation to an equal or smaller size cannot fail!) -*/ - - - -#define MINSIZEARRAY 4 - - -void *luaM_growaux_ (lua_State *L, void *block, int *size, size_t size_elems, - int limit, const char *what) { - void *newblock; - int newsize; - if (*size >= limit/2) { /* cannot double it? */ - if (*size >= limit) /* cannot grow even a little? */ - luaG_runerror(L, "too many %s (limit is %d)", what, limit); - newsize = limit; /* still have at least one free place */ - } - else { - newsize = (*size)*2; - if (newsize < MINSIZEARRAY) - newsize = MINSIZEARRAY; /* minimum size */ - } - newblock = luaM_reallocv(L, block, *size, newsize, size_elems); - *size = newsize; /* update only when everything else is OK */ - return newblock; -} - - -l_noret luaM_toobig (lua_State *L) { - luaG_runerror(L, "memory allocation error: block too big"); -} - - - -/* -** generic allocation routine. -*/ -void *luaM_realloc_ (lua_State *L, void *block, size_t osize, size_t nsize) { - void *newblock; - global_State *g = G(L); - size_t realosize = (block) ? osize : 0; - lua_assert((realosize == 0) == (block == NULL)); -#if defined(HARDMEMTESTS) - if (nsize > realosize && g->gcrunning) - luaC_fullgc(L, 1); /* force a GC whenever possible */ -#endif - newblock = (*g->frealloc)(g->ud, block, osize, nsize); - if (newblock == NULL && nsize > 0) { - lua_assert(nsize > realosize); /* cannot fail when shrinking a block */ - if (g->version) { /* is state fully built? */ - luaC_fullgc(L, 1); /* try to free some memory... */ - newblock = (*g->frealloc)(g->ud, block, osize, nsize); /* try again */ - } - if (newblock == NULL) - luaD_throw(L, LUA_ERRMEM); - } - lua_assert((nsize == 0) == (newblock == NULL)); - g->GCdebt = (g->GCdebt + nsize) - realosize; - return newblock; -} - diff --git a/deps/rcheevos/test/lua/src/lmem.h b/deps/rcheevos/test/lua/src/lmem.h deleted file mode 100644 index 30f484895e..0000000000 --- a/deps/rcheevos/test/lua/src/lmem.h +++ /dev/null @@ -1,69 +0,0 @@ -/* -** $Id: lmem.h,v 1.43 2014/12/19 17:26:14 roberto Exp $ -** Interface to Memory Manager -** See Copyright Notice in lua.h -*/ - -#ifndef lmem_h -#define lmem_h - - -#include - -#include "llimits.h" -#include "lua.h" - - -/* -** This macro reallocs a vector 'b' from 'on' to 'n' elements, where -** each element has size 'e'. In case of arithmetic overflow of the -** product 'n'*'e', it raises an error (calling 'luaM_toobig'). Because -** 'e' is always constant, it avoids the runtime division MAX_SIZET/(e). -** -** (The macro is somewhat complex to avoid warnings: The 'sizeof' -** comparison avoids a runtime comparison when overflow cannot occur. -** The compiler should be able to optimize the real test by itself, but -** when it does it, it may give a warning about "comparison is always -** false due to limited range of data type"; the +1 tricks the compiler, -** avoiding this warning but also this optimization.) -*/ -#define luaM_reallocv(L,b,on,n,e) \ - (((sizeof(n) >= sizeof(size_t) && cast(size_t, (n)) + 1 > MAX_SIZET/(e)) \ - ? luaM_toobig(L) : cast_void(0)) , \ - luaM_realloc_(L, (b), (on)*(e), (n)*(e))) - -/* -** Arrays of chars do not need any test -*/ -#define luaM_reallocvchar(L,b,on,n) \ - cast(char *, luaM_realloc_(L, (b), (on)*sizeof(char), (n)*sizeof(char))) - -#define luaM_freemem(L, b, s) luaM_realloc_(L, (b), (s), 0) -#define luaM_free(L, b) luaM_realloc_(L, (b), sizeof(*(b)), 0) -#define luaM_freearray(L, b, n) luaM_realloc_(L, (b), (n)*sizeof(*(b)), 0) - -#define luaM_malloc(L,s) luaM_realloc_(L, NULL, 0, (s)) -#define luaM_new(L,t) cast(t *, luaM_malloc(L, sizeof(t))) -#define luaM_newvector(L,n,t) \ - cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t))) - -#define luaM_newobject(L,tag,s) luaM_realloc_(L, NULL, tag, (s)) - -#define luaM_growvector(L,v,nelems,size,t,limit,e) \ - if ((nelems)+1 > (size)) \ - ((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e))) - -#define luaM_reallocvector(L, v,oldn,n,t) \ - ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t)))) - -LUAI_FUNC l_noret luaM_toobig (lua_State *L); - -/* not to be called directly */ -LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize, - size_t size); -LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int *size, - size_t size_elem, int limit, - const char *what); - -#endif - diff --git a/deps/rcheevos/test/lua/src/loadlib.c b/deps/rcheevos/test/lua/src/loadlib.c deleted file mode 100644 index 4791e748b1..0000000000 --- a/deps/rcheevos/test/lua/src/loadlib.c +++ /dev/null @@ -1,790 +0,0 @@ -/* -** $Id: loadlib.c,v 1.130 2017/01/12 17:14:26 roberto Exp $ -** Dynamic library loader for Lua -** See Copyright Notice in lua.h -** -** This module contains an implementation of loadlib for Unix systems -** that have dlfcn, an implementation for Windows, and a stub for other -** systems. -*/ - -#define loadlib_c -#define LUA_LIB - -#include "lprefix.h" - - -#include -#include -#include - -#include "lua.h" - -#include "lauxlib.h" -#include "lualib.h" - - -/* -** LUA_IGMARK is a mark to ignore all before it when building the -** luaopen_ function name. -*/ -#if !defined (LUA_IGMARK) -#define LUA_IGMARK "-" -#endif - - -/* -** LUA_CSUBSEP is the character that replaces dots in submodule names -** when searching for a C loader. -** LUA_LSUBSEP is the character that replaces dots in submodule names -** when searching for a Lua loader. -*/ -#if !defined(LUA_CSUBSEP) -#define LUA_CSUBSEP LUA_DIRSEP -#endif - -#if !defined(LUA_LSUBSEP) -#define LUA_LSUBSEP LUA_DIRSEP -#endif - - -/* prefix for open functions in C libraries */ -#define LUA_POF "luaopen_" - -/* separator for open functions in C libraries */ -#define LUA_OFSEP "_" - - -/* -** unique key for table in the registry that keeps handles -** for all loaded C libraries -*/ -static const int CLIBS = 0; - -#define LIB_FAIL "open" - - -#define setprogdir(L) ((void)0) - - -/* -** system-dependent functions -*/ - -/* -** unload library 'lib' -*/ -static void lsys_unloadlib (void *lib); - -/* -** load C library in file 'path'. If 'seeglb', load with all names in -** the library global. -** Returns the library; in case of error, returns NULL plus an -** error string in the stack. -*/ -static void *lsys_load (lua_State *L, const char *path, int seeglb); - -/* -** Try to find a function named 'sym' in library 'lib'. -** Returns the function; in case of error, returns NULL plus an -** error string in the stack. -*/ -static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym); - - - - -#if defined(LUA_USE_DLOPEN) /* { */ -/* -** {======================================================================== -** This is an implementation of loadlib based on the dlfcn interface. -** The dlfcn interface is available in Linux, SunOS, Solaris, IRIX, FreeBSD, -** NetBSD, AIX 4.2, HPUX 11, and probably most other Unix flavors, at least -** as an emulation layer on top of native functions. -** ========================================================================= -*/ - -#include - -/* -** Macro to convert pointer-to-void* to pointer-to-function. This cast -** is undefined according to ISO C, but POSIX assumes that it works. -** (The '__extension__' in gnu compilers is only to avoid warnings.) -*/ -#if defined(__GNUC__) -#define cast_func(p) (__extension__ (lua_CFunction)(p)) -#else -#define cast_func(p) ((lua_CFunction)(p)) -#endif - - -static void lsys_unloadlib (void *lib) { - dlclose(lib); -} - - -static void *lsys_load (lua_State *L, const char *path, int seeglb) { - void *lib = dlopen(path, RTLD_NOW | (seeglb ? RTLD_GLOBAL : RTLD_LOCAL)); - if (lib == NULL) lua_pushstring(L, dlerror()); - return lib; -} - - -static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) { - lua_CFunction f = cast_func(dlsym(lib, sym)); - if (f == NULL) lua_pushstring(L, dlerror()); - return f; -} - -/* }====================================================== */ - - - -#elif defined(LUA_DL_DLL) /* }{ */ -/* -** {====================================================================== -** This is an implementation of loadlib for Windows using native functions. -** ======================================================================= -*/ - -#include - - -/* -** optional flags for LoadLibraryEx -*/ -#if !defined(LUA_LLE_FLAGS) -#define LUA_LLE_FLAGS 0 -#endif - - -#undef setprogdir - - -/* -** Replace in the path (on the top of the stack) any occurrence -** of LUA_EXEC_DIR with the executable's path. -*/ -static void setprogdir (lua_State *L) { - char buff[MAX_PATH + 1]; - char *lb; - DWORD nsize = sizeof(buff)/sizeof(char); - DWORD n = GetModuleFileNameA(NULL, buff, nsize); /* get exec. name */ - if (n == 0 || n == nsize || (lb = strrchr(buff, '\\')) == NULL) - luaL_error(L, "unable to get ModuleFileName"); - else { - *lb = '\0'; /* cut name on the last '\\' to get the path */ - luaL_gsub(L, lua_tostring(L, -1), LUA_EXEC_DIR, buff); - lua_remove(L, -2); /* remove original string */ - } -} - - - - -static void pusherror (lua_State *L) { - int error = GetLastError(); - char buffer[128]; - if (FormatMessageA(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM, - NULL, error, 0, buffer, sizeof(buffer)/sizeof(char), NULL)) - lua_pushstring(L, buffer); - else - lua_pushfstring(L, "system error %d\n", error); -} - -static void lsys_unloadlib (void *lib) { - FreeLibrary((HMODULE)lib); -} - - -static void *lsys_load (lua_State *L, const char *path, int seeglb) { - HMODULE lib = LoadLibraryExA(path, NULL, LUA_LLE_FLAGS); - (void)(seeglb); /* not used: symbols are 'global' by default */ - if (lib == NULL) pusherror(L); - return lib; -} - - -static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) { - lua_CFunction f = (lua_CFunction)GetProcAddress((HMODULE)lib, sym); - if (f == NULL) pusherror(L); - return f; -} - -/* }====================================================== */ - - -#else /* }{ */ -/* -** {====================================================== -** Fallback for other systems -** ======================================================= -*/ - -#undef LIB_FAIL -#define LIB_FAIL "absent" - - -#define DLMSG "dynamic libraries not enabled; check your Lua installation" - - -static void lsys_unloadlib (void *lib) { - (void)(lib); /* not used */ -} - - -static void *lsys_load (lua_State *L, const char *path, int seeglb) { - (void)(path); (void)(seeglb); /* not used */ - lua_pushliteral(L, DLMSG); - return NULL; -} - - -static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) { - (void)(lib); (void)(sym); /* not used */ - lua_pushliteral(L, DLMSG); - return NULL; -} - -/* }====================================================== */ -#endif /* } */ - - -/* -** {================================================================== -** Set Paths -** =================================================================== -*/ - -/* -** LUA_PATH_VAR and LUA_CPATH_VAR are the names of the environment -** variables that Lua check to set its paths. -*/ -#if !defined(LUA_PATH_VAR) -#define LUA_PATH_VAR "LUA_PATH" -#endif - -#if !defined(LUA_CPATH_VAR) -#define LUA_CPATH_VAR "LUA_CPATH" -#endif - - -#define AUXMARK "\1" /* auxiliary mark */ - - -/* -** return registry.LUA_NOENV as a boolean -*/ -static int noenv (lua_State *L) { - int b; - lua_getfield(L, LUA_REGISTRYINDEX, "LUA_NOENV"); - b = lua_toboolean(L, -1); - lua_pop(L, 1); /* remove value */ - return b; -} - - -/* -** Set a path -*/ -static void setpath (lua_State *L, const char *fieldname, - const char *envname, - const char *dft) { - const char *nver = lua_pushfstring(L, "%s%s", envname, LUA_VERSUFFIX); - const char *path = getenv(nver); /* use versioned name */ - if (path == NULL) /* no environment variable? */ - path = getenv(envname); /* try unversioned name */ - if (path == NULL || noenv(L)) /* no environment variable? */ - lua_pushstring(L, dft); /* use default */ - else { - /* replace ";;" by ";AUXMARK;" and then AUXMARK by default path */ - path = luaL_gsub(L, path, LUA_PATH_SEP LUA_PATH_SEP, - LUA_PATH_SEP AUXMARK LUA_PATH_SEP); - luaL_gsub(L, path, AUXMARK, dft); - lua_remove(L, -2); /* remove result from 1st 'gsub' */ - } - setprogdir(L); - lua_setfield(L, -3, fieldname); /* package[fieldname] = path value */ - lua_pop(L, 1); /* pop versioned variable name */ -} - -/* }================================================================== */ - - -/* -** return registry.CLIBS[path] -*/ -static void *checkclib (lua_State *L, const char *path) { - void *plib; - lua_rawgetp(L, LUA_REGISTRYINDEX, &CLIBS); - lua_getfield(L, -1, path); - plib = lua_touserdata(L, -1); /* plib = CLIBS[path] */ - lua_pop(L, 2); /* pop CLIBS table and 'plib' */ - return plib; -} - - -/* -** registry.CLIBS[path] = plib -- for queries -** registry.CLIBS[#CLIBS + 1] = plib -- also keep a list of all libraries -*/ -static void addtoclib (lua_State *L, const char *path, void *plib) { - lua_rawgetp(L, LUA_REGISTRYINDEX, &CLIBS); - lua_pushlightuserdata(L, plib); - lua_pushvalue(L, -1); - lua_setfield(L, -3, path); /* CLIBS[path] = plib */ - lua_rawseti(L, -2, luaL_len(L, -2) + 1); /* CLIBS[#CLIBS + 1] = plib */ - lua_pop(L, 1); /* pop CLIBS table */ -} - - -/* -** __gc tag method for CLIBS table: calls 'lsys_unloadlib' for all lib -** handles in list CLIBS -*/ -static int gctm (lua_State *L) { - lua_Integer n = luaL_len(L, 1); - for (; n >= 1; n--) { /* for each handle, in reverse order */ - lua_rawgeti(L, 1, n); /* get handle CLIBS[n] */ - lsys_unloadlib(lua_touserdata(L, -1)); - lua_pop(L, 1); /* pop handle */ - } - return 0; -} - - - -/* error codes for 'lookforfunc' */ -#define ERRLIB 1 -#define ERRFUNC 2 - -/* -** Look for a C function named 'sym' in a dynamically loaded library -** 'path'. -** First, check whether the library is already loaded; if not, try -** to load it. -** Then, if 'sym' is '*', return true (as library has been loaded). -** Otherwise, look for symbol 'sym' in the library and push a -** C function with that symbol. -** Return 0 and 'true' or a function in the stack; in case of -** errors, return an error code and an error message in the stack. -*/ -static int lookforfunc (lua_State *L, const char *path, const char *sym) { - void *reg = checkclib(L, path); /* check loaded C libraries */ - if (reg == NULL) { /* must load library? */ - reg = lsys_load(L, path, *sym == '*'); /* global symbols if 'sym'=='*' */ - if (reg == NULL) return ERRLIB; /* unable to load library */ - addtoclib(L, path, reg); - } - if (*sym == '*') { /* loading only library (no function)? */ - lua_pushboolean(L, 1); /* return 'true' */ - return 0; /* no errors */ - } - else { - lua_CFunction f = lsys_sym(L, reg, sym); - if (f == NULL) - return ERRFUNC; /* unable to find function */ - lua_pushcfunction(L, f); /* else create new function */ - return 0; /* no errors */ - } -} - - -static int ll_loadlib (lua_State *L) { - const char *path = luaL_checkstring(L, 1); - const char *init = luaL_checkstring(L, 2); - int stat = lookforfunc(L, path, init); - if (stat == 0) /* no errors? */ - return 1; /* return the loaded function */ - else { /* error; error message is on stack top */ - lua_pushnil(L); - lua_insert(L, -2); - lua_pushstring(L, (stat == ERRLIB) ? LIB_FAIL : "init"); - return 3; /* return nil, error message, and where */ - } -} - - - -/* -** {====================================================== -** 'require' function -** ======================================================= -*/ - - -static int readable (const char *filename) { - FILE *f = fopen(filename, "r"); /* try to open file */ - if (f == NULL) return 0; /* open failed */ - fclose(f); - return 1; -} - - -static const char *pushnexttemplate (lua_State *L, const char *path) { - const char *l; - while (*path == *LUA_PATH_SEP) path++; /* skip separators */ - if (*path == '\0') return NULL; /* no more templates */ - l = strchr(path, *LUA_PATH_SEP); /* find next separator */ - if (l == NULL) l = path + strlen(path); - lua_pushlstring(L, path, l - path); /* template */ - return l; -} - - -static const char *searchpath (lua_State *L, const char *name, - const char *path, - const char *sep, - const char *dirsep) { - luaL_Buffer msg; /* to build error message */ - luaL_buffinit(L, &msg); - if (*sep != '\0') /* non-empty separator? */ - name = luaL_gsub(L, name, sep, dirsep); /* replace it by 'dirsep' */ - while ((path = pushnexttemplate(L, path)) != NULL) { - const char *filename = luaL_gsub(L, lua_tostring(L, -1), - LUA_PATH_MARK, name); - lua_remove(L, -2); /* remove path template */ - if (readable(filename)) /* does file exist and is readable? */ - return filename; /* return that file name */ - lua_pushfstring(L, "\n\tno file '%s'", filename); - lua_remove(L, -2); /* remove file name */ - luaL_addvalue(&msg); /* concatenate error msg. entry */ - } - luaL_pushresult(&msg); /* create error message */ - return NULL; /* not found */ -} - - -static int ll_searchpath (lua_State *L) { - const char *f = searchpath(L, luaL_checkstring(L, 1), - luaL_checkstring(L, 2), - luaL_optstring(L, 3, "."), - luaL_optstring(L, 4, LUA_DIRSEP)); - if (f != NULL) return 1; - else { /* error message is on top of the stack */ - lua_pushnil(L); - lua_insert(L, -2); - return 2; /* return nil + error message */ - } -} - - -static const char *findfile (lua_State *L, const char *name, - const char *pname, - const char *dirsep) { - const char *path; - lua_getfield(L, lua_upvalueindex(1), pname); - path = lua_tostring(L, -1); - if (path == NULL) - luaL_error(L, "'package.%s' must be a string", pname); - return searchpath(L, name, path, ".", dirsep); -} - - -static int checkload (lua_State *L, int stat, const char *filename) { - if (stat) { /* module loaded successfully? */ - lua_pushstring(L, filename); /* will be 2nd argument to module */ - return 2; /* return open function and file name */ - } - else - return luaL_error(L, "error loading module '%s' from file '%s':\n\t%s", - lua_tostring(L, 1), filename, lua_tostring(L, -1)); -} - - -static int searcher_Lua (lua_State *L) { - const char *filename; - const char *name = luaL_checkstring(L, 1); - filename = findfile(L, name, "path", LUA_LSUBSEP); - if (filename == NULL) return 1; /* module not found in this path */ - return checkload(L, (luaL_loadfile(L, filename) == LUA_OK), filename); -} - - -/* -** Try to find a load function for module 'modname' at file 'filename'. -** First, change '.' to '_' in 'modname'; then, if 'modname' has -** the form X-Y (that is, it has an "ignore mark"), build a function -** name "luaopen_X" and look for it. (For compatibility, if that -** fails, it also tries "luaopen_Y".) If there is no ignore mark, -** look for a function named "luaopen_modname". -*/ -static int loadfunc (lua_State *L, const char *filename, const char *modname) { - const char *openfunc; - const char *mark; - modname = luaL_gsub(L, modname, ".", LUA_OFSEP); - mark = strchr(modname, *LUA_IGMARK); - if (mark) { - int stat; - openfunc = lua_pushlstring(L, modname, mark - modname); - openfunc = lua_pushfstring(L, LUA_POF"%s", openfunc); - stat = lookforfunc(L, filename, openfunc); - if (stat != ERRFUNC) return stat; - modname = mark + 1; /* else go ahead and try old-style name */ - } - openfunc = lua_pushfstring(L, LUA_POF"%s", modname); - return lookforfunc(L, filename, openfunc); -} - - -static int searcher_C (lua_State *L) { - const char *name = luaL_checkstring(L, 1); - const char *filename = findfile(L, name, "cpath", LUA_CSUBSEP); - if (filename == NULL) return 1; /* module not found in this path */ - return checkload(L, (loadfunc(L, filename, name) == 0), filename); -} - - -static int searcher_Croot (lua_State *L) { - const char *filename; - const char *name = luaL_checkstring(L, 1); - const char *p = strchr(name, '.'); - int stat; - if (p == NULL) return 0; /* is root */ - lua_pushlstring(L, name, p - name); - filename = findfile(L, lua_tostring(L, -1), "cpath", LUA_CSUBSEP); - if (filename == NULL) return 1; /* root not found */ - if ((stat = loadfunc(L, filename, name)) != 0) { - if (stat != ERRFUNC) - return checkload(L, 0, filename); /* real error */ - else { /* open function not found */ - lua_pushfstring(L, "\n\tno module '%s' in file '%s'", name, filename); - return 1; - } - } - lua_pushstring(L, filename); /* will be 2nd argument to module */ - return 2; -} - - -static int searcher_preload (lua_State *L) { - const char *name = luaL_checkstring(L, 1); - lua_getfield(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE); - if (lua_getfield(L, -1, name) == LUA_TNIL) /* not found? */ - lua_pushfstring(L, "\n\tno field package.preload['%s']", name); - return 1; -} - - -static void findloader (lua_State *L, const char *name) { - int i; - luaL_Buffer msg; /* to build error message */ - luaL_buffinit(L, &msg); - /* push 'package.searchers' to index 3 in the stack */ - if (lua_getfield(L, lua_upvalueindex(1), "searchers") != LUA_TTABLE) - luaL_error(L, "'package.searchers' must be a table"); - /* iterate over available searchers to find a loader */ - for (i = 1; ; i++) { - if (lua_rawgeti(L, 3, i) == LUA_TNIL) { /* no more searchers? */ - lua_pop(L, 1); /* remove nil */ - luaL_pushresult(&msg); /* create error message */ - luaL_error(L, "module '%s' not found:%s", name, lua_tostring(L, -1)); - } - lua_pushstring(L, name); - lua_call(L, 1, 2); /* call it */ - if (lua_isfunction(L, -2)) /* did it find a loader? */ - return; /* module loader found */ - else if (lua_isstring(L, -2)) { /* searcher returned error message? */ - lua_pop(L, 1); /* remove extra return */ - luaL_addvalue(&msg); /* concatenate error message */ - } - else - lua_pop(L, 2); /* remove both returns */ - } -} - - -static int ll_require (lua_State *L) { - const char *name = luaL_checkstring(L, 1); - lua_settop(L, 1); /* LOADED table will be at index 2 */ - lua_getfield(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE); - lua_getfield(L, 2, name); /* LOADED[name] */ - if (lua_toboolean(L, -1)) /* is it there? */ - return 1; /* package is already loaded */ - /* else must load package */ - lua_pop(L, 1); /* remove 'getfield' result */ - findloader(L, name); - lua_pushstring(L, name); /* pass name as argument to module loader */ - lua_insert(L, -2); /* name is 1st argument (before search data) */ - lua_call(L, 2, 1); /* run loader to load module */ - if (!lua_isnil(L, -1)) /* non-nil return? */ - lua_setfield(L, 2, name); /* LOADED[name] = returned value */ - if (lua_getfield(L, 2, name) == LUA_TNIL) { /* module set no value? */ - lua_pushboolean(L, 1); /* use true as result */ - lua_pushvalue(L, -1); /* extra copy to be returned */ - lua_setfield(L, 2, name); /* LOADED[name] = true */ - } - return 1; -} - -/* }====================================================== */ - - - -/* -** {====================================================== -** 'module' function -** ======================================================= -*/ -#if defined(LUA_COMPAT_MODULE) - -/* -** changes the environment variable of calling function -*/ -static void set_env (lua_State *L) { - lua_Debug ar; - if (lua_getstack(L, 1, &ar) == 0 || - lua_getinfo(L, "f", &ar) == 0 || /* get calling function */ - lua_iscfunction(L, -1)) - luaL_error(L, "'module' not called from a Lua function"); - lua_pushvalue(L, -2); /* copy new environment table to top */ - lua_setupvalue(L, -2, 1); - lua_pop(L, 1); /* remove function */ -} - - -static void dooptions (lua_State *L, int n) { - int i; - for (i = 2; i <= n; i++) { - if (lua_isfunction(L, i)) { /* avoid 'calling' extra info. */ - lua_pushvalue(L, i); /* get option (a function) */ - lua_pushvalue(L, -2); /* module */ - lua_call(L, 1, 0); - } - } -} - - -static void modinit (lua_State *L, const char *modname) { - const char *dot; - lua_pushvalue(L, -1); - lua_setfield(L, -2, "_M"); /* module._M = module */ - lua_pushstring(L, modname); - lua_setfield(L, -2, "_NAME"); - dot = strrchr(modname, '.'); /* look for last dot in module name */ - if (dot == NULL) dot = modname; - else dot++; - /* set _PACKAGE as package name (full module name minus last part) */ - lua_pushlstring(L, modname, dot - modname); - lua_setfield(L, -2, "_PACKAGE"); -} - - -static int ll_module (lua_State *L) { - const char *modname = luaL_checkstring(L, 1); - int lastarg = lua_gettop(L); /* last parameter */ - luaL_pushmodule(L, modname, 1); /* get/create module table */ - /* check whether table already has a _NAME field */ - if (lua_getfield(L, -1, "_NAME") != LUA_TNIL) - lua_pop(L, 1); /* table is an initialized module */ - else { /* no; initialize it */ - lua_pop(L, 1); - modinit(L, modname); - } - lua_pushvalue(L, -1); - set_env(L); - dooptions(L, lastarg); - return 1; -} - - -static int ll_seeall (lua_State *L) { - luaL_checktype(L, 1, LUA_TTABLE); - if (!lua_getmetatable(L, 1)) { - lua_createtable(L, 0, 1); /* create new metatable */ - lua_pushvalue(L, -1); - lua_setmetatable(L, 1); - } - lua_pushglobaltable(L); - lua_setfield(L, -2, "__index"); /* mt.__index = _G */ - return 0; -} - -#endif -/* }====================================================== */ - - - -static const luaL_Reg pk_funcs[] = { - {"loadlib", ll_loadlib}, - {"searchpath", ll_searchpath}, -#if defined(LUA_COMPAT_MODULE) - {"seeall", ll_seeall}, -#endif - /* placeholders */ - {"preload", NULL}, - {"cpath", NULL}, - {"path", NULL}, - {"searchers", NULL}, - {"loaded", NULL}, - {NULL, NULL} -}; - - -static const luaL_Reg ll_funcs[] = { -#if defined(LUA_COMPAT_MODULE) - {"module", ll_module}, -#endif - {"require", ll_require}, - {NULL, NULL} -}; - - -static void createsearcherstable (lua_State *L) { - static const lua_CFunction searchers[] = - {searcher_preload, searcher_Lua, searcher_C, searcher_Croot, NULL}; - int i; - /* create 'searchers' table */ - lua_createtable(L, sizeof(searchers)/sizeof(searchers[0]) - 1, 0); - /* fill it with predefined searchers */ - for (i=0; searchers[i] != NULL; i++) { - lua_pushvalue(L, -2); /* set 'package' as upvalue for all searchers */ - lua_pushcclosure(L, searchers[i], 1); - lua_rawseti(L, -2, i+1); - } -#if defined(LUA_COMPAT_LOADERS) - lua_pushvalue(L, -1); /* make a copy of 'searchers' table */ - lua_setfield(L, -3, "loaders"); /* put it in field 'loaders' */ -#endif - lua_setfield(L, -2, "searchers"); /* put it in field 'searchers' */ -} - - -/* -** create table CLIBS to keep track of loaded C libraries, -** setting a finalizer to close all libraries when closing state. -*/ -static void createclibstable (lua_State *L) { - lua_newtable(L); /* create CLIBS table */ - lua_createtable(L, 0, 1); /* create metatable for CLIBS */ - lua_pushcfunction(L, gctm); - lua_setfield(L, -2, "__gc"); /* set finalizer for CLIBS table */ - lua_setmetatable(L, -2); - lua_rawsetp(L, LUA_REGISTRYINDEX, &CLIBS); /* set CLIBS table in registry */ -} - - -LUAMOD_API int luaopen_package (lua_State *L) { - createclibstable(L); - luaL_newlib(L, pk_funcs); /* create 'package' table */ - createsearcherstable(L); - /* set paths */ - setpath(L, "path", LUA_PATH_VAR, LUA_PATH_DEFAULT); - setpath(L, "cpath", LUA_CPATH_VAR, LUA_CPATH_DEFAULT); - /* store config information */ - lua_pushliteral(L, LUA_DIRSEP "\n" LUA_PATH_SEP "\n" LUA_PATH_MARK "\n" - LUA_EXEC_DIR "\n" LUA_IGMARK "\n"); - lua_setfield(L, -2, "config"); - /* set field 'loaded' */ - luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE); - lua_setfield(L, -2, "loaded"); - /* set field 'preload' */ - luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE); - lua_setfield(L, -2, "preload"); - lua_pushglobaltable(L); - lua_pushvalue(L, -2); /* set 'package' as upvalue for next lib */ - luaL_setfuncs(L, ll_funcs, 1); /* open lib into global table */ - lua_pop(L, 1); /* pop global table */ - return 1; /* return 'package' table */ -} - diff --git a/deps/rcheevos/test/lua/src/lobject.c b/deps/rcheevos/test/lua/src/lobject.c deleted file mode 100644 index 2da76899a2..0000000000 --- a/deps/rcheevos/test/lua/src/lobject.c +++ /dev/null @@ -1,521 +0,0 @@ -/* -** $Id: lobject.c,v 2.113 2016/12/22 13:08:50 roberto Exp $ -** Some generic functions over Lua objects -** See Copyright Notice in lua.h -*/ - -#define lobject_c -#define LUA_CORE - -#include "lprefix.h" - - -#include -#include -#include -#include -#include -#include - -#include "lua.h" - -#include "lctype.h" -#include "ldebug.h" -#include "ldo.h" -#include "lmem.h" -#include "lobject.h" -#include "lstate.h" -#include "lstring.h" -#include "lvm.h" - - - -LUAI_DDEF const TValue luaO_nilobject_ = {NILCONSTANT}; - - -/* -** converts an integer to a "floating point byte", represented as -** (eeeeexxx), where the real value is (1xxx) * 2^(eeeee - 1) if -** eeeee != 0 and (xxx) otherwise. -*/ -int luaO_int2fb (unsigned int x) { - int e = 0; /* exponent */ - if (x < 8) return x; - while (x >= (8 << 4)) { /* coarse steps */ - x = (x + 0xf) >> 4; /* x = ceil(x / 16) */ - e += 4; - } - while (x >= (8 << 1)) { /* fine steps */ - x = (x + 1) >> 1; /* x = ceil(x / 2) */ - e++; - } - return ((e+1) << 3) | (cast_int(x) - 8); -} - - -/* converts back */ -int luaO_fb2int (int x) { - return (x < 8) ? x : ((x & 7) + 8) << ((x >> 3) - 1); -} - - -/* -** Computes ceil(log2(x)) -*/ -int luaO_ceillog2 (unsigned int x) { - static const lu_byte log_2[256] = { /* log_2[i] = ceil(log2(i - 1)) */ - 0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5, - 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6, - 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, - 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8 - }; - int l = 0; - x--; - while (x >= 256) { l += 8; x >>= 8; } - return l + log_2[x]; -} - - -static lua_Integer intarith (lua_State *L, int op, lua_Integer v1, - lua_Integer v2) { - switch (op) { - case LUA_OPADD: return intop(+, v1, v2); - case LUA_OPSUB:return intop(-, v1, v2); - case LUA_OPMUL:return intop(*, v1, v2); - case LUA_OPMOD: return luaV_mod(L, v1, v2); - case LUA_OPIDIV: return luaV_div(L, v1, v2); - case LUA_OPBAND: return intop(&, v1, v2); - case LUA_OPBOR: return intop(|, v1, v2); - case LUA_OPBXOR: return intop(^, v1, v2); - case LUA_OPSHL: return luaV_shiftl(v1, v2); - case LUA_OPSHR: return luaV_shiftl(v1, -v2); - case LUA_OPUNM: return intop(-, 0, v1); - case LUA_OPBNOT: return intop(^, ~l_castS2U(0), v1); - default: lua_assert(0); return 0; - } -} - - -static lua_Number numarith (lua_State *L, int op, lua_Number v1, - lua_Number v2) { - switch (op) { - case LUA_OPADD: return luai_numadd(L, v1, v2); - case LUA_OPSUB: return luai_numsub(L, v1, v2); - case LUA_OPMUL: return luai_nummul(L, v1, v2); - case LUA_OPDIV: return luai_numdiv(L, v1, v2); - case LUA_OPPOW: return luai_numpow(L, v1, v2); - case LUA_OPIDIV: return luai_numidiv(L, v1, v2); - case LUA_OPUNM: return luai_numunm(L, v1); - case LUA_OPMOD: { - lua_Number m; - luai_nummod(L, v1, v2, m); - return m; - } - default: lua_assert(0); return 0; - } -} - - -void luaO_arith (lua_State *L, int op, const TValue *p1, const TValue *p2, - TValue *res) { - switch (op) { - case LUA_OPBAND: case LUA_OPBOR: case LUA_OPBXOR: - case LUA_OPSHL: case LUA_OPSHR: - case LUA_OPBNOT: { /* operate only on integers */ - lua_Integer i1; lua_Integer i2; - if (tointeger(p1, &i1) && tointeger(p2, &i2)) { - setivalue(res, intarith(L, op, i1, i2)); - return; - } - else break; /* go to the end */ - } - case LUA_OPDIV: case LUA_OPPOW: { /* operate only on floats */ - lua_Number n1; lua_Number n2; - if (tonumber(p1, &n1) && tonumber(p2, &n2)) { - setfltvalue(res, numarith(L, op, n1, n2)); - return; - } - else break; /* go to the end */ - } - default: { /* other operations */ - lua_Number n1; lua_Number n2; - if (ttisinteger(p1) && ttisinteger(p2)) { - setivalue(res, intarith(L, op, ivalue(p1), ivalue(p2))); - return; - } - else if (tonumber(p1, &n1) && tonumber(p2, &n2)) { - setfltvalue(res, numarith(L, op, n1, n2)); - return; - } - else break; /* go to the end */ - } - } - /* could not perform raw operation; try metamethod */ - lua_assert(L != NULL); /* should not fail when folding (compile time) */ - luaT_trybinTM(L, p1, p2, res, cast(TMS, (op - LUA_OPADD) + TM_ADD)); -} - - -int luaO_hexavalue (int c) { - if (lisdigit(c)) return c - '0'; - else return (ltolower(c) - 'a') + 10; -} - - -static int isneg (const char **s) { - if (**s == '-') { (*s)++; return 1; } - else if (**s == '+') (*s)++; - return 0; -} - - - -/* -** {================================================================== -** Lua's implementation for 'lua_strx2number' -** =================================================================== -*/ - -#if !defined(lua_strx2number) - -/* maximum number of significant digits to read (to avoid overflows - even with single floats) */ -#define MAXSIGDIG 30 - -/* -** convert an hexadecimal numeric string to a number, following -** C99 specification for 'strtod' -*/ -static lua_Number lua_strx2number (const char *s, char **endptr) { - int dot = lua_getlocaledecpoint(); - lua_Number r = 0.0; /* result (accumulator) */ - int sigdig = 0; /* number of significant digits */ - int nosigdig = 0; /* number of non-significant digits */ - int e = 0; /* exponent correction */ - int neg; /* 1 if number is negative */ - int hasdot = 0; /* true after seen a dot */ - *endptr = cast(char *, s); /* nothing is valid yet */ - while (lisspace(cast_uchar(*s))) s++; /* skip initial spaces */ - neg = isneg(&s); /* check signal */ - if (!(*s == '0' && (*(s + 1) == 'x' || *(s + 1) == 'X'))) /* check '0x' */ - return 0.0; /* invalid format (no '0x') */ - for (s += 2; ; s++) { /* skip '0x' and read numeral */ - if (*s == dot) { - if (hasdot) break; /* second dot? stop loop */ - else hasdot = 1; - } - else if (lisxdigit(cast_uchar(*s))) { - if (sigdig == 0 && *s == '0') /* non-significant digit (zero)? */ - nosigdig++; - else if (++sigdig <= MAXSIGDIG) /* can read it without overflow? */ - r = (r * cast_num(16.0)) + luaO_hexavalue(*s); - else e++; /* too many digits; ignore, but still count for exponent */ - if (hasdot) e--; /* decimal digit? correct exponent */ - } - else break; /* neither a dot nor a digit */ - } - if (nosigdig + sigdig == 0) /* no digits? */ - return 0.0; /* invalid format */ - *endptr = cast(char *, s); /* valid up to here */ - e *= 4; /* each digit multiplies/divides value by 2^4 */ - if (*s == 'p' || *s == 'P') { /* exponent part? */ - int exp1 = 0; /* exponent value */ - int neg1; /* exponent signal */ - s++; /* skip 'p' */ - neg1 = isneg(&s); /* signal */ - if (!lisdigit(cast_uchar(*s))) - return 0.0; /* invalid; must have at least one digit */ - while (lisdigit(cast_uchar(*s))) /* read exponent */ - exp1 = exp1 * 10 + *(s++) - '0'; - if (neg1) exp1 = -exp1; - e += exp1; - *endptr = cast(char *, s); /* valid up to here */ - } - if (neg) r = -r; - return l_mathop(ldexp)(r, e); -} - -#endif -/* }====================================================== */ - - -/* maximum length of a numeral */ -#if !defined (L_MAXLENNUM) -#define L_MAXLENNUM 200 -#endif - -static const char *l_str2dloc (const char *s, lua_Number *result, int mode) { - char *endptr; - *result = (mode == 'x') ? lua_strx2number(s, &endptr) /* try to convert */ - : lua_str2number(s, &endptr); - if (endptr == s) return NULL; /* nothing recognized? */ - while (lisspace(cast_uchar(*endptr))) endptr++; /* skip trailing spaces */ - return (*endptr == '\0') ? endptr : NULL; /* OK if no trailing characters */ -} - - -/* -** Convert string 's' to a Lua number (put in 'result'). Return NULL -** on fail or the address of the ending '\0' on success. -** 'pmode' points to (and 'mode' contains) special things in the string: -** - 'x'/'X' means an hexadecimal numeral -** - 'n'/'N' means 'inf' or 'nan' (which should be rejected) -** - '.' just optimizes the search for the common case (nothing special) -** This function accepts both the current locale or a dot as the radix -** mark. If the convertion fails, it may mean number has a dot but -** locale accepts something else. In that case, the code copies 's' -** to a buffer (because 's' is read-only), changes the dot to the -** current locale radix mark, and tries to convert again. -*/ -static const char *l_str2d (const char *s, lua_Number *result) { - const char *endptr; - const char *pmode = strpbrk(s, ".xXnN"); - int mode = pmode ? ltolower(cast_uchar(*pmode)) : 0; - if (mode == 'n') /* reject 'inf' and 'nan' */ - return NULL; - endptr = l_str2dloc(s, result, mode); /* try to convert */ - if (endptr == NULL) { /* failed? may be a different locale */ - char buff[L_MAXLENNUM + 1]; - const char *pdot = strchr(s, '.'); - if (strlen(s) > L_MAXLENNUM || pdot == NULL) - return NULL; /* string too long or no dot; fail */ - strcpy(buff, s); /* copy string to buffer */ - buff[pdot - s] = lua_getlocaledecpoint(); /* correct decimal point */ - endptr = l_str2dloc(buff, result, mode); /* try again */ - if (endptr != NULL) - endptr = s + (endptr - buff); /* make relative to 's' */ - } - return endptr; -} - - -#define MAXBY10 cast(lua_Unsigned, LUA_MAXINTEGER / 10) -#define MAXLASTD cast_int(LUA_MAXINTEGER % 10) - -static const char *l_str2int (const char *s, lua_Integer *result) { - lua_Unsigned a = 0; - int empty = 1; - int neg; - while (lisspace(cast_uchar(*s))) s++; /* skip initial spaces */ - neg = isneg(&s); - if (s[0] == '0' && - (s[1] == 'x' || s[1] == 'X')) { /* hex? */ - s += 2; /* skip '0x' */ - for (; lisxdigit(cast_uchar(*s)); s++) { - a = a * 16 + luaO_hexavalue(*s); - empty = 0; - } - } - else { /* decimal */ - for (; lisdigit(cast_uchar(*s)); s++) { - int d = *s - '0'; - if (a >= MAXBY10 && (a > MAXBY10 || d > MAXLASTD + neg)) /* overflow? */ - return NULL; /* do not accept it (as integer) */ - a = a * 10 + d; - empty = 0; - } - } - while (lisspace(cast_uchar(*s))) s++; /* skip trailing spaces */ - if (empty || *s != '\0') return NULL; /* something wrong in the numeral */ - else { - *result = l_castU2S((neg) ? 0u - a : a); - return s; - } -} - - -size_t luaO_str2num (const char *s, TValue *o) { - lua_Integer i; lua_Number n; - const char *e; - if ((e = l_str2int(s, &i)) != NULL) { /* try as an integer */ - setivalue(o, i); - } - else if ((e = l_str2d(s, &n)) != NULL) { /* else try as a float */ - setfltvalue(o, n); - } - else - return 0; /* conversion failed */ - return (e - s) + 1; /* success; return string size */ -} - - -int luaO_utf8esc (char *buff, unsigned long x) { - int n = 1; /* number of bytes put in buffer (backwards) */ - lua_assert(x <= 0x10FFFF); - if (x < 0x80) /* ascii? */ - buff[UTF8BUFFSZ - 1] = cast(char, x); - else { /* need continuation bytes */ - unsigned int mfb = 0x3f; /* maximum that fits in first byte */ - do { /* add continuation bytes */ - buff[UTF8BUFFSZ - (n++)] = cast(char, 0x80 | (x & 0x3f)); - x >>= 6; /* remove added bits */ - mfb >>= 1; /* now there is one less bit available in first byte */ - } while (x > mfb); /* still needs continuation byte? */ - buff[UTF8BUFFSZ - n] = cast(char, (~mfb << 1) | x); /* add first byte */ - } - return n; -} - - -/* maximum length of the conversion of a number to a string */ -#define MAXNUMBER2STR 50 - - -/* -** Convert a number object to a string -*/ -void luaO_tostring (lua_State *L, StkId obj) { - char buff[MAXNUMBER2STR]; - size_t len; - lua_assert(ttisnumber(obj)); - if (ttisinteger(obj)) - len = lua_integer2str(buff, sizeof(buff), ivalue(obj)); - else { - len = lua_number2str(buff, sizeof(buff), fltvalue(obj)); -#if !defined(LUA_COMPAT_FLOATSTRING) - if (buff[strspn(buff, "-0123456789")] == '\0') { /* looks like an int? */ - buff[len++] = lua_getlocaledecpoint(); - buff[len++] = '0'; /* adds '.0' to result */ - } -#endif - } - setsvalue2s(L, obj, luaS_newlstr(L, buff, len)); -} - - -static void pushstr (lua_State *L, const char *str, size_t l) { - setsvalue2s(L, L->top, luaS_newlstr(L, str, l)); - luaD_inctop(L); -} - - -/* -** this function handles only '%d', '%c', '%f', '%p', and '%s' - conventional formats, plus Lua-specific '%I' and '%U' -*/ -const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) { - int n = 0; - for (;;) { - const char *e = strchr(fmt, '%'); - if (e == NULL) break; - pushstr(L, fmt, e - fmt); - switch (*(e+1)) { - case 's': { /* zero-terminated string */ - const char *s = va_arg(argp, char *); - if (s == NULL) s = "(null)"; - pushstr(L, s, strlen(s)); - break; - } - case 'c': { /* an 'int' as a character */ - char buff = cast(char, va_arg(argp, int)); - if (lisprint(cast_uchar(buff))) - pushstr(L, &buff, 1); - else /* non-printable character; print its code */ - luaO_pushfstring(L, "<\\%d>", cast_uchar(buff)); - break; - } - case 'd': { /* an 'int' */ - setivalue(L->top, va_arg(argp, int)); - goto top2str; - } - case 'I': { /* a 'lua_Integer' */ - setivalue(L->top, cast(lua_Integer, va_arg(argp, l_uacInt))); - goto top2str; - } - case 'f': { /* a 'lua_Number' */ - setfltvalue(L->top, cast_num(va_arg(argp, l_uacNumber))); - top2str: /* convert the top element to a string */ - luaD_inctop(L); - luaO_tostring(L, L->top - 1); - break; - } - case 'p': { /* a pointer */ - char buff[4*sizeof(void *) + 8]; /* should be enough space for a '%p' */ - int l = l_sprintf(buff, sizeof(buff), "%p", va_arg(argp, void *)); - pushstr(L, buff, l); - break; - } - case 'U': { /* an 'int' as a UTF-8 sequence */ - char buff[UTF8BUFFSZ]; - int l = luaO_utf8esc(buff, cast(long, va_arg(argp, long))); - pushstr(L, buff + UTF8BUFFSZ - l, l); - break; - } - case '%': { - pushstr(L, "%", 1); - break; - } - default: { - luaG_runerror(L, "invalid option '%%%c' to 'lua_pushfstring'", - *(e + 1)); - } - } - n += 2; - fmt = e+2; - } - luaD_checkstack(L, 1); - pushstr(L, fmt, strlen(fmt)); - if (n > 0) luaV_concat(L, n + 1); - return svalue(L->top - 1); -} - - -const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) { - const char *msg; - va_list argp; - va_start(argp, fmt); - msg = luaO_pushvfstring(L, fmt, argp); - va_end(argp); - return msg; -} - - -/* number of chars of a literal string without the ending \0 */ -#define LL(x) (sizeof(x)/sizeof(char) - 1) - -#define RETS "..." -#define PRE "[string \"" -#define POS "\"]" - -#define addstr(a,b,l) ( memcpy(a,b,(l) * sizeof(char)), a += (l) ) - -void luaO_chunkid (char *out, const char *source, size_t bufflen) { - size_t l = strlen(source); - if (*source == '=') { /* 'literal' source */ - if (l <= bufflen) /* small enough? */ - memcpy(out, source + 1, l * sizeof(char)); - else { /* truncate it */ - addstr(out, source + 1, bufflen - 1); - *out = '\0'; - } - } - else if (*source == '@') { /* file name */ - if (l <= bufflen) /* small enough? */ - memcpy(out, source + 1, l * sizeof(char)); - else { /* add '...' before rest of name */ - addstr(out, RETS, LL(RETS)); - bufflen -= LL(RETS); - memcpy(out, source + 1 + l - bufflen, bufflen * sizeof(char)); - } - } - else { /* string; format as [string "source"] */ - const char *nl = strchr(source, '\n'); /* find first new line (if any) */ - addstr(out, PRE, LL(PRE)); /* add prefix */ - bufflen -= LL(PRE RETS POS) + 1; /* save space for prefix+suffix+'\0' */ - if (l < bufflen && nl == NULL) { /* small one-line source? */ - addstr(out, source, l); /* keep it */ - } - else { - if (nl != NULL) l = nl - source; /* stop at first newline */ - if (l > bufflen) l = bufflen; - addstr(out, source, l); - addstr(out, RETS, LL(RETS)); - } - memcpy(out, POS, (LL(POS) + 1) * sizeof(char)); - } -} - diff --git a/deps/rcheevos/test/lua/src/lobject.h b/deps/rcheevos/test/lua/src/lobject.h deleted file mode 100644 index 3c04228949..0000000000 --- a/deps/rcheevos/test/lua/src/lobject.h +++ /dev/null @@ -1,549 +0,0 @@ -/* -** $Id: lobject.h,v 2.117 2016/08/01 19:51:24 roberto Exp $ -** Type definitions for Lua objects -** See Copyright Notice in lua.h -*/ - - -#ifndef lobject_h -#define lobject_h - - -#include - - -#include "llimits.h" -#include "lua.h" - - -/* -** Extra tags for non-values -*/ -#define LUA_TPROTO LUA_NUMTAGS /* function prototypes */ -#define LUA_TDEADKEY (LUA_NUMTAGS+1) /* removed keys in tables */ - -/* -** number of all possible tags (including LUA_TNONE but excluding DEADKEY) -*/ -#define LUA_TOTALTAGS (LUA_TPROTO + 2) - - -/* -** tags for Tagged Values have the following use of bits: -** bits 0-3: actual tag (a LUA_T* value) -** bits 4-5: variant bits -** bit 6: whether value is collectable -*/ - - -/* -** LUA_TFUNCTION variants: -** 0 - Lua function -** 1 - light C function -** 2 - regular C function (closure) -*/ - -/* Variant tags for functions */ -#define LUA_TLCL (LUA_TFUNCTION | (0 << 4)) /* Lua closure */ -#define LUA_TLCF (LUA_TFUNCTION | (1 << 4)) /* light C function */ -#define LUA_TCCL (LUA_TFUNCTION | (2 << 4)) /* C closure */ - - -/* Variant tags for strings */ -#define LUA_TSHRSTR (LUA_TSTRING | (0 << 4)) /* short strings */ -#define LUA_TLNGSTR (LUA_TSTRING | (1 << 4)) /* long strings */ - - -/* Variant tags for numbers */ -#define LUA_TNUMFLT (LUA_TNUMBER | (0 << 4)) /* float numbers */ -#define LUA_TNUMINT (LUA_TNUMBER | (1 << 4)) /* integer numbers */ - - -/* Bit mark for collectable types */ -#define BIT_ISCOLLECTABLE (1 << 6) - -/* mark a tag as collectable */ -#define ctb(t) ((t) | BIT_ISCOLLECTABLE) - - -/* -** Common type for all collectable objects -*/ -typedef struct GCObject GCObject; - - -/* -** Common Header for all collectable objects (in macro form, to be -** included in other objects) -*/ -#define CommonHeader GCObject *next; lu_byte tt; lu_byte marked - - -/* -** Common type has only the common header -*/ -struct GCObject { - CommonHeader; -}; - - - - -/* -** Tagged Values. This is the basic representation of values in Lua, -** an actual value plus a tag with its type. -*/ - -/* -** Union of all Lua values -*/ -typedef union Value { - GCObject *gc; /* collectable objects */ - void *p; /* light userdata */ - int b; /* booleans */ - lua_CFunction f; /* light C functions */ - lua_Integer i; /* integer numbers */ - lua_Number n; /* float numbers */ -} Value; - - -#define TValuefields Value value_; int tt_ - - -typedef struct lua_TValue { - TValuefields; -} TValue; - - - -/* macro defining a nil value */ -#define NILCONSTANT {NULL}, LUA_TNIL - - -#define val_(o) ((o)->value_) - - -/* raw type tag of a TValue */ -#define rttype(o) ((o)->tt_) - -/* tag with no variants (bits 0-3) */ -#define novariant(x) ((x) & 0x0F) - -/* type tag of a TValue (bits 0-3 for tags + variant bits 4-5) */ -#define ttype(o) (rttype(o) & 0x3F) - -/* type tag of a TValue with no variants (bits 0-3) */ -#define ttnov(o) (novariant(rttype(o))) - - -/* Macros to test type */ -#define checktag(o,t) (rttype(o) == (t)) -#define checktype(o,t) (ttnov(o) == (t)) -#define ttisnumber(o) checktype((o), LUA_TNUMBER) -#define ttisfloat(o) checktag((o), LUA_TNUMFLT) -#define ttisinteger(o) checktag((o), LUA_TNUMINT) -#define ttisnil(o) checktag((o), LUA_TNIL) -#define ttisboolean(o) checktag((o), LUA_TBOOLEAN) -#define ttislightuserdata(o) checktag((o), LUA_TLIGHTUSERDATA) -#define ttisstring(o) checktype((o), LUA_TSTRING) -#define ttisshrstring(o) checktag((o), ctb(LUA_TSHRSTR)) -#define ttislngstring(o) checktag((o), ctb(LUA_TLNGSTR)) -#define ttistable(o) checktag((o), ctb(LUA_TTABLE)) -#define ttisfunction(o) checktype(o, LUA_TFUNCTION) -#define ttisclosure(o) ((rttype(o) & 0x1F) == LUA_TFUNCTION) -#define ttisCclosure(o) checktag((o), ctb(LUA_TCCL)) -#define ttisLclosure(o) checktag((o), ctb(LUA_TLCL)) -#define ttislcf(o) checktag((o), LUA_TLCF) -#define ttisfulluserdata(o) checktag((o), ctb(LUA_TUSERDATA)) -#define ttisthread(o) checktag((o), ctb(LUA_TTHREAD)) -#define ttisdeadkey(o) checktag((o), LUA_TDEADKEY) - - -/* Macros to access values */ -#define ivalue(o) check_exp(ttisinteger(o), val_(o).i) -#define fltvalue(o) check_exp(ttisfloat(o), val_(o).n) -#define nvalue(o) check_exp(ttisnumber(o), \ - (ttisinteger(o) ? cast_num(ivalue(o)) : fltvalue(o))) -#define gcvalue(o) check_exp(iscollectable(o), val_(o).gc) -#define pvalue(o) check_exp(ttislightuserdata(o), val_(o).p) -#define tsvalue(o) check_exp(ttisstring(o), gco2ts(val_(o).gc)) -#define uvalue(o) check_exp(ttisfulluserdata(o), gco2u(val_(o).gc)) -#define clvalue(o) check_exp(ttisclosure(o), gco2cl(val_(o).gc)) -#define clLvalue(o) check_exp(ttisLclosure(o), gco2lcl(val_(o).gc)) -#define clCvalue(o) check_exp(ttisCclosure(o), gco2ccl(val_(o).gc)) -#define fvalue(o) check_exp(ttislcf(o), val_(o).f) -#define hvalue(o) check_exp(ttistable(o), gco2t(val_(o).gc)) -#define bvalue(o) check_exp(ttisboolean(o), val_(o).b) -#define thvalue(o) check_exp(ttisthread(o), gco2th(val_(o).gc)) -/* a dead value may get the 'gc' field, but cannot access its contents */ -#define deadvalue(o) check_exp(ttisdeadkey(o), cast(void *, val_(o).gc)) - -#define l_isfalse(o) (ttisnil(o) || (ttisboolean(o) && bvalue(o) == 0)) - - -#define iscollectable(o) (rttype(o) & BIT_ISCOLLECTABLE) - - -/* Macros for internal tests */ -#define righttt(obj) (ttype(obj) == gcvalue(obj)->tt) - -#define checkliveness(L,obj) \ - lua_longassert(!iscollectable(obj) || \ - (righttt(obj) && (L == NULL || !isdead(G(L),gcvalue(obj))))) - - -/* Macros to set values */ -#define settt_(o,t) ((o)->tt_=(t)) - -#define setfltvalue(obj,x) \ - { TValue *io=(obj); val_(io).n=(x); settt_(io, LUA_TNUMFLT); } - -#define chgfltvalue(obj,x) \ - { TValue *io=(obj); lua_assert(ttisfloat(io)); val_(io).n=(x); } - -#define setivalue(obj,x) \ - { TValue *io=(obj); val_(io).i=(x); settt_(io, LUA_TNUMINT); } - -#define chgivalue(obj,x) \ - { TValue *io=(obj); lua_assert(ttisinteger(io)); val_(io).i=(x); } - -#define setnilvalue(obj) settt_(obj, LUA_TNIL) - -#define setfvalue(obj,x) \ - { TValue *io=(obj); val_(io).f=(x); settt_(io, LUA_TLCF); } - -#define setpvalue(obj,x) \ - { TValue *io=(obj); val_(io).p=(x); settt_(io, LUA_TLIGHTUSERDATA); } - -#define setbvalue(obj,x) \ - { TValue *io=(obj); val_(io).b=(x); settt_(io, LUA_TBOOLEAN); } - -#define setgcovalue(L,obj,x) \ - { TValue *io = (obj); GCObject *i_g=(x); \ - val_(io).gc = i_g; settt_(io, ctb(i_g->tt)); } - -#define setsvalue(L,obj,x) \ - { TValue *io = (obj); TString *x_ = (x); \ - val_(io).gc = obj2gco(x_); settt_(io, ctb(x_->tt)); \ - checkliveness(L,io); } - -#define setuvalue(L,obj,x) \ - { TValue *io = (obj); Udata *x_ = (x); \ - val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TUSERDATA)); \ - checkliveness(L,io); } - -#define setthvalue(L,obj,x) \ - { TValue *io = (obj); lua_State *x_ = (x); \ - val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TTHREAD)); \ - checkliveness(L,io); } - -#define setclLvalue(L,obj,x) \ - { TValue *io = (obj); LClosure *x_ = (x); \ - val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TLCL)); \ - checkliveness(L,io); } - -#define setclCvalue(L,obj,x) \ - { TValue *io = (obj); CClosure *x_ = (x); \ - val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TCCL)); \ - checkliveness(L,io); } - -#define sethvalue(L,obj,x) \ - { TValue *io = (obj); Table *x_ = (x); \ - val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TTABLE)); \ - checkliveness(L,io); } - -#define setdeadvalue(obj) settt_(obj, LUA_TDEADKEY) - - - -#define setobj(L,obj1,obj2) \ - { TValue *io1=(obj1); *io1 = *(obj2); \ - (void)L; checkliveness(L,io1); } - - -/* -** different types of assignments, according to destination -*/ - -/* from stack to (same) stack */ -#define setobjs2s setobj -/* to stack (not from same stack) */ -#define setobj2s setobj -#define setsvalue2s setsvalue -#define sethvalue2s sethvalue -#define setptvalue2s setptvalue -/* from table to same table */ -#define setobjt2t setobj -/* to new object */ -#define setobj2n setobj -#define setsvalue2n setsvalue - -/* to table (define it as an expression to be used in macros) */ -#define setobj2t(L,o1,o2) ((void)L, *(o1)=*(o2), checkliveness(L,(o1))) - - - - -/* -** {====================================================== -** types and prototypes -** ======================================================= -*/ - - -typedef TValue *StkId; /* index to stack elements */ - - - - -/* -** Header for string value; string bytes follow the end of this structure -** (aligned according to 'UTString'; see next). -*/ -typedef struct TString { - CommonHeader; - lu_byte extra; /* reserved words for short strings; "has hash" for longs */ - lu_byte shrlen; /* length for short strings */ - unsigned int hash; - union { - size_t lnglen; /* length for long strings */ - struct TString *hnext; /* linked list for hash table */ - } u; -} TString; - - -/* -** Ensures that address after this type is always fully aligned. -*/ -typedef union UTString { - L_Umaxalign dummy; /* ensures maximum alignment for strings */ - TString tsv; -} UTString; - - -/* -** Get the actual string (array of bytes) from a 'TString'. -** (Access to 'extra' ensures that value is really a 'TString'.) -*/ -#define getstr(ts) \ - check_exp(sizeof((ts)->extra), cast(char *, (ts)) + sizeof(UTString)) - - -/* get the actual string (array of bytes) from a Lua value */ -#define svalue(o) getstr(tsvalue(o)) - -/* get string length from 'TString *s' */ -#define tsslen(s) ((s)->tt == LUA_TSHRSTR ? (s)->shrlen : (s)->u.lnglen) - -/* get string length from 'TValue *o' */ -#define vslen(o) tsslen(tsvalue(o)) - - -/* -** Header for userdata; memory area follows the end of this structure -** (aligned according to 'UUdata'; see next). -*/ -typedef struct Udata { - CommonHeader; - lu_byte ttuv_; /* user value's tag */ - struct Table *metatable; - size_t len; /* number of bytes */ - union Value user_; /* user value */ -} Udata; - - -/* -** Ensures that address after this type is always fully aligned. -*/ -typedef union UUdata { - L_Umaxalign dummy; /* ensures maximum alignment for 'local' udata */ - Udata uv; -} UUdata; - - -/* -** Get the address of memory block inside 'Udata'. -** (Access to 'ttuv_' ensures that value is really a 'Udata'.) -*/ -#define getudatamem(u) \ - check_exp(sizeof((u)->ttuv_), (cast(char*, (u)) + sizeof(UUdata))) - -#define setuservalue(L,u,o) \ - { const TValue *io=(o); Udata *iu = (u); \ - iu->user_ = io->value_; iu->ttuv_ = rttype(io); \ - checkliveness(L,io); } - - -#define getuservalue(L,u,o) \ - { TValue *io=(o); const Udata *iu = (u); \ - io->value_ = iu->user_; settt_(io, iu->ttuv_); \ - checkliveness(L,io); } - - -/* -** Description of an upvalue for function prototypes -*/ -typedef struct Upvaldesc { - TString *name; /* upvalue name (for debug information) */ - lu_byte instack; /* whether it is in stack (register) */ - lu_byte idx; /* index of upvalue (in stack or in outer function's list) */ -} Upvaldesc; - - -/* -** Description of a local variable for function prototypes -** (used for debug information) -*/ -typedef struct LocVar { - TString *varname; - int startpc; /* first point where variable is active */ - int endpc; /* first point where variable is dead */ -} LocVar; - - -/* -** Function Prototypes -*/ -typedef struct Proto { - CommonHeader; - lu_byte numparams; /* number of fixed parameters */ - lu_byte is_vararg; - lu_byte maxstacksize; /* number of registers needed by this function */ - int sizeupvalues; /* size of 'upvalues' */ - int sizek; /* size of 'k' */ - int sizecode; - int sizelineinfo; - int sizep; /* size of 'p' */ - int sizelocvars; - int linedefined; /* debug information */ - int lastlinedefined; /* debug information */ - TValue *k; /* constants used by the function */ - Instruction *code; /* opcodes */ - struct Proto **p; /* functions defined inside the function */ - int *lineinfo; /* map from opcodes to source lines (debug information) */ - LocVar *locvars; /* information about local variables (debug information) */ - Upvaldesc *upvalues; /* upvalue information */ - struct LClosure *cache; /* last-created closure with this prototype */ - TString *source; /* used for debug information */ - GCObject *gclist; -} Proto; - - - -/* -** Lua Upvalues -*/ -typedef struct UpVal UpVal; - - -/* -** Closures -*/ - -#define ClosureHeader \ - CommonHeader; lu_byte nupvalues; GCObject *gclist - -typedef struct CClosure { - ClosureHeader; - lua_CFunction f; - TValue upvalue[1]; /* list of upvalues */ -} CClosure; - - -typedef struct LClosure { - ClosureHeader; - struct Proto *p; - UpVal *upvals[1]; /* list of upvalues */ -} LClosure; - - -typedef union Closure { - CClosure c; - LClosure l; -} Closure; - - -#define isLfunction(o) ttisLclosure(o) - -#define getproto(o) (clLvalue(o)->p) - - -/* -** Tables -*/ - -typedef union TKey { - struct { - TValuefields; - int next; /* for chaining (offset for next node) */ - } nk; - TValue tvk; -} TKey; - - -/* copy a value into a key without messing up field 'next' */ -#define setnodekey(L,key,obj) \ - { TKey *k_=(key); const TValue *io_=(obj); \ - k_->nk.value_ = io_->value_; k_->nk.tt_ = io_->tt_; \ - (void)L; checkliveness(L,io_); } - - -typedef struct Node { - TValue i_val; - TKey i_key; -} Node; - - -typedef struct Table { - CommonHeader; - lu_byte flags; /* 1<

lsizenode)) - - -/* -** (address of) a fixed nil value -*/ -#define luaO_nilobject (&luaO_nilobject_) - - -LUAI_DDEC const TValue luaO_nilobject_; - -/* size of buffer for 'luaO_utf8esc' function */ -#define UTF8BUFFSZ 8 - -LUAI_FUNC int luaO_int2fb (unsigned int x); -LUAI_FUNC int luaO_fb2int (int x); -LUAI_FUNC int luaO_utf8esc (char *buff, unsigned long x); -LUAI_FUNC int luaO_ceillog2 (unsigned int x); -LUAI_FUNC void luaO_arith (lua_State *L, int op, const TValue *p1, - const TValue *p2, TValue *res); -LUAI_FUNC size_t luaO_str2num (const char *s, TValue *o); -LUAI_FUNC int luaO_hexavalue (int c); -LUAI_FUNC void luaO_tostring (lua_State *L, StkId obj); -LUAI_FUNC const char *luaO_pushvfstring (lua_State *L, const char *fmt, - va_list argp); -LUAI_FUNC const char *luaO_pushfstring (lua_State *L, const char *fmt, ...); -LUAI_FUNC void luaO_chunkid (char *out, const char *source, size_t len); - - -#endif - diff --git a/deps/rcheevos/test/lua/src/lopcodes.c b/deps/rcheevos/test/lua/src/lopcodes.c deleted file mode 100644 index a1cbef8573..0000000000 --- a/deps/rcheevos/test/lua/src/lopcodes.c +++ /dev/null @@ -1,124 +0,0 @@ -/* -** $Id: lopcodes.c,v 1.55 2015/01/05 13:48:33 roberto Exp $ -** Opcodes for Lua virtual machine -** See Copyright Notice in lua.h -*/ - -#define lopcodes_c -#define LUA_CORE - -#include "lprefix.h" - - -#include - -#include "lopcodes.h" - - -/* ORDER OP */ - -LUAI_DDEF const char *const luaP_opnames[NUM_OPCODES+1] = { - "MOVE", - "LOADK", - "LOADKX", - "LOADBOOL", - "LOADNIL", - "GETUPVAL", - "GETTABUP", - "GETTABLE", - "SETTABUP", - "SETUPVAL", - "SETTABLE", - "NEWTABLE", - "SELF", - "ADD", - "SUB", - "MUL", - "MOD", - "POW", - "DIV", - "IDIV", - "BAND", - "BOR", - "BXOR", - "SHL", - "SHR", - "UNM", - "BNOT", - "NOT", - "LEN", - "CONCAT", - "JMP", - "EQ", - "LT", - "LE", - "TEST", - "TESTSET", - "CALL", - "TAILCALL", - "RETURN", - "FORLOOP", - "FORPREP", - "TFORCALL", - "TFORLOOP", - "SETLIST", - "CLOSURE", - "VARARG", - "EXTRAARG", - NULL -}; - - -#define opmode(t,a,b,c,m) (((t)<<7) | ((a)<<6) | ((b)<<4) | ((c)<<2) | (m)) - -LUAI_DDEF const lu_byte luaP_opmodes[NUM_OPCODES] = { -/* T A B C mode opcode */ - opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_MOVE */ - ,opmode(0, 1, OpArgK, OpArgN, iABx) /* OP_LOADK */ - ,opmode(0, 1, OpArgN, OpArgN, iABx) /* OP_LOADKX */ - ,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_LOADBOOL */ - ,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_LOADNIL */ - ,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_GETUPVAL */ - ,opmode(0, 1, OpArgU, OpArgK, iABC) /* OP_GETTABUP */ - ,opmode(0, 1, OpArgR, OpArgK, iABC) /* OP_GETTABLE */ - ,opmode(0, 0, OpArgK, OpArgK, iABC) /* OP_SETTABUP */ - ,opmode(0, 0, OpArgU, OpArgN, iABC) /* OP_SETUPVAL */ - ,opmode(0, 0, OpArgK, OpArgK, iABC) /* OP_SETTABLE */ - ,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_NEWTABLE */ - ,opmode(0, 1, OpArgR, OpArgK, iABC) /* OP_SELF */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_ADD */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_SUB */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_MUL */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_MOD */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_POW */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_DIV */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_IDIV */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_BAND */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_BOR */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_BXOR */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_SHL */ - ,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_SHR */ - ,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_UNM */ - ,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_BNOT */ - ,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_NOT */ - ,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_LEN */ - ,opmode(0, 1, OpArgR, OpArgR, iABC) /* OP_CONCAT */ - ,opmode(0, 0, OpArgR, OpArgN, iAsBx) /* OP_JMP */ - ,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_EQ */ - ,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_LT */ - ,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_LE */ - ,opmode(1, 0, OpArgN, OpArgU, iABC) /* OP_TEST */ - ,opmode(1, 1, OpArgR, OpArgU, iABC) /* OP_TESTSET */ - ,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_CALL */ - ,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_TAILCALL */ - ,opmode(0, 0, OpArgU, OpArgN, iABC) /* OP_RETURN */ - ,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_FORLOOP */ - ,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_FORPREP */ - ,opmode(0, 0, OpArgN, OpArgU, iABC) /* OP_TFORCALL */ - ,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_TFORLOOP */ - ,opmode(0, 0, OpArgU, OpArgU, iABC) /* OP_SETLIST */ - ,opmode(0, 1, OpArgU, OpArgN, iABx) /* OP_CLOSURE */ - ,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_VARARG */ - ,opmode(0, 0, OpArgU, OpArgU, iAx) /* OP_EXTRAARG */ -}; - diff --git a/deps/rcheevos/test/lua/src/lopcodes.h b/deps/rcheevos/test/lua/src/lopcodes.h deleted file mode 100644 index bbc4b61968..0000000000 --- a/deps/rcheevos/test/lua/src/lopcodes.h +++ /dev/null @@ -1,297 +0,0 @@ -/* -** $Id: lopcodes.h,v 1.149 2016/07/19 17:12:21 roberto Exp $ -** Opcodes for Lua virtual machine -** See Copyright Notice in lua.h -*/ - -#ifndef lopcodes_h -#define lopcodes_h - -#include "llimits.h" - - -/*=========================================================================== - We assume that instructions are unsigned numbers. - All instructions have an opcode in the first 6 bits. - Instructions can have the following fields: - 'A' : 8 bits - 'B' : 9 bits - 'C' : 9 bits - 'Ax' : 26 bits ('A', 'B', and 'C' together) - 'Bx' : 18 bits ('B' and 'C' together) - 'sBx' : signed Bx - - A signed argument is represented in excess K; that is, the number - value is the unsigned value minus K. K is exactly the maximum value - for that argument (so that -max is represented by 0, and +max is - represented by 2*max), which is half the maximum for the corresponding - unsigned argument. -===========================================================================*/ - - -enum OpMode {iABC, iABx, iAsBx, iAx}; /* basic instruction format */ - - -/* -** size and position of opcode arguments. -*/ -#define SIZE_C 9 -#define SIZE_B 9 -#define SIZE_Bx (SIZE_C + SIZE_B) -#define SIZE_A 8 -#define SIZE_Ax (SIZE_C + SIZE_B + SIZE_A) - -#define SIZE_OP 6 - -#define POS_OP 0 -#define POS_A (POS_OP + SIZE_OP) -#define POS_C (POS_A + SIZE_A) -#define POS_B (POS_C + SIZE_C) -#define POS_Bx POS_C -#define POS_Ax POS_A - - -/* -** limits for opcode arguments. -** we use (signed) int to manipulate most arguments, -** so they must fit in LUAI_BITSINT-1 bits (-1 for sign) -*/ -#if SIZE_Bx < LUAI_BITSINT-1 -#define MAXARG_Bx ((1<>1) /* 'sBx' is signed */ -#else -#define MAXARG_Bx MAX_INT -#define MAXARG_sBx MAX_INT -#endif - -#if SIZE_Ax < LUAI_BITSINT-1 -#define MAXARG_Ax ((1<>POS_OP) & MASK1(SIZE_OP,0))) -#define SET_OPCODE(i,o) ((i) = (((i)&MASK0(SIZE_OP,POS_OP)) | \ - ((cast(Instruction, o)<>pos) & MASK1(size,0))) -#define setarg(i,v,pos,size) ((i) = (((i)&MASK0(size,pos)) | \ - ((cast(Instruction, v)<> RK(C) */ -OP_UNM,/* A B R(A) := -R(B) */ -OP_BNOT,/* A B R(A) := ~R(B) */ -OP_NOT,/* A B R(A) := not R(B) */ -OP_LEN,/* A B R(A) := length of R(B) */ - -OP_CONCAT,/* A B C R(A) := R(B).. ... ..R(C) */ - -OP_JMP,/* A sBx pc+=sBx; if (A) close all upvalues >= R(A - 1) */ -OP_EQ,/* A B C if ((RK(B) == RK(C)) ~= A) then pc++ */ -OP_LT,/* A B C if ((RK(B) < RK(C)) ~= A) then pc++ */ -OP_LE,/* A B C if ((RK(B) <= RK(C)) ~= A) then pc++ */ - -OP_TEST,/* A C if not (R(A) <=> C) then pc++ */ -OP_TESTSET,/* A B C if (R(B) <=> C) then R(A) := R(B) else pc++ */ - -OP_CALL,/* A B C R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */ -OP_TAILCALL,/* A B C return R(A)(R(A+1), ... ,R(A+B-1)) */ -OP_RETURN,/* A B return R(A), ... ,R(A+B-2) (see note) */ - -OP_FORLOOP,/* A sBx R(A)+=R(A+2); - if R(A) > 4) & 3)) -#define getCMode(m) (cast(enum OpArgMask, (luaP_opmodes[m] >> 2) & 3)) -#define testAMode(m) (luaP_opmodes[m] & (1 << 6)) -#define testTMode(m) (luaP_opmodes[m] & (1 << 7)) - - -LUAI_DDEC const char *const luaP_opnames[NUM_OPCODES+1]; /* opcode names */ - - -/* number of list items to accumulate before a SETLIST instruction */ -#define LFIELDS_PER_FLUSH 50 - - -#endif diff --git a/deps/rcheevos/test/lua/src/loslib.c b/deps/rcheevos/test/lua/src/loslib.c deleted file mode 100644 index 5a94eb9068..0000000000 --- a/deps/rcheevos/test/lua/src/loslib.c +++ /dev/null @@ -1,407 +0,0 @@ -/* -** $Id: loslib.c,v 1.65 2016/07/18 17:58:58 roberto Exp $ -** Standard Operating System library -** See Copyright Notice in lua.h -*/ - -#define loslib_c -#define LUA_LIB - -#include "lprefix.h" - - -#include -#include -#include -#include -#include - -#include "lua.h" - -#include "lauxlib.h" -#include "lualib.h" - - -/* -** {================================================================== -** List of valid conversion specifiers for the 'strftime' function; -** options are grouped by length; group of length 2 start with '||'. -** =================================================================== -*/ -#if !defined(LUA_STRFTIMEOPTIONS) /* { */ - -/* options for ANSI C 89 (only 1-char options) */ -#define L_STRFTIMEC89 "aAbBcdHIjmMpSUwWxXyYZ%" - -/* options for ISO C 99 and POSIX */ -#define L_STRFTIMEC99 "aAbBcCdDeFgGhHIjmMnprRStTuUVwWxXyYzZ%" \ - "||" "EcECExEXEyEY" "OdOeOHOIOmOMOSOuOUOVOwOWOy" /* two-char options */ - -/* options for Windows */ -#define L_STRFTIMEWIN "aAbBcdHIjmMpSUwWxXyYzZ%" \ - "||" "#c#x#d#H#I#j#m#M#S#U#w#W#y#Y" /* two-char options */ - -#if defined(LUA_USE_WINDOWS) -#define LUA_STRFTIMEOPTIONS L_STRFTIMEWIN -#elif defined(LUA_USE_C89) -#define LUA_STRFTIMEOPTIONS L_STRFTIMEC89 -#else /* C99 specification */ -#define LUA_STRFTIMEOPTIONS L_STRFTIMEC99 -#endif - -#endif /* } */ -/* }================================================================== */ - - -/* -** {================================================================== -** Configuration for time-related stuff -** =================================================================== -*/ - -#if !defined(l_time_t) /* { */ -/* -** type to represent time_t in Lua -*/ -#define l_timet lua_Integer -#define l_pushtime(L,t) lua_pushinteger(L,(lua_Integer)(t)) - -static time_t l_checktime (lua_State *L, int arg) { - lua_Integer t = luaL_checkinteger(L, arg); - luaL_argcheck(L, (time_t)t == t, arg, "time out-of-bounds"); - return (time_t)t; -} - -#endif /* } */ - - -#if !defined(l_gmtime) /* { */ -/* -** By default, Lua uses gmtime/localtime, except when POSIX is available, -** where it uses gmtime_r/localtime_r -*/ - -#if defined(LUA_USE_POSIX) /* { */ - -#define l_gmtime(t,r) gmtime_r(t,r) -#define l_localtime(t,r) localtime_r(t,r) - -#else /* }{ */ - -/* ISO C definitions */ -#define l_gmtime(t,r) ((void)(r)->tm_sec, gmtime(t)) -#define l_localtime(t,r) ((void)(r)->tm_sec, localtime(t)) - -#endif /* } */ - -#endif /* } */ - -/* }================================================================== */ - - -/* -** {================================================================== -** Configuration for 'tmpnam': -** By default, Lua uses tmpnam except when POSIX is available, where -** it uses mkstemp. -** =================================================================== -*/ -#if !defined(lua_tmpnam) /* { */ - -#if defined(LUA_USE_POSIX) /* { */ - -#include - -#define LUA_TMPNAMBUFSIZE 32 - -#if !defined(LUA_TMPNAMTEMPLATE) -#define LUA_TMPNAMTEMPLATE "/tmp/lua_XXXXXX" -#endif - -#define lua_tmpnam(b,e) { \ - strcpy(b, LUA_TMPNAMTEMPLATE); \ - e = mkstemp(b); \ - if (e != -1) close(e); \ - e = (e == -1); } - -#else /* }{ */ - -/* ISO C definitions */ -#define LUA_TMPNAMBUFSIZE L_tmpnam -#define lua_tmpnam(b,e) { e = (tmpnam(b) == NULL); } - -#endif /* } */ - -#endif /* } */ -/* }================================================================== */ - - - - -static int os_execute (lua_State *L) { - const char *cmd = luaL_optstring(L, 1, NULL); - int stat = system(cmd); - if (cmd != NULL) - return luaL_execresult(L, stat); - else { - lua_pushboolean(L, stat); /* true if there is a shell */ - return 1; - } -} - - -static int os_remove (lua_State *L) { - const char *filename = luaL_checkstring(L, 1); - return luaL_fileresult(L, remove(filename) == 0, filename); -} - - -static int os_rename (lua_State *L) { - const char *fromname = luaL_checkstring(L, 1); - const char *toname = luaL_checkstring(L, 2); - return luaL_fileresult(L, rename(fromname, toname) == 0, NULL); -} - - -static int os_tmpname (lua_State *L) { - char buff[LUA_TMPNAMBUFSIZE]; - int err; - lua_tmpnam(buff, err); - if (err) - return luaL_error(L, "unable to generate a unique filename"); - lua_pushstring(L, buff); - return 1; -} - - -static int os_getenv (lua_State *L) { - lua_pushstring(L, getenv(luaL_checkstring(L, 1))); /* if NULL push nil */ - return 1; -} - - -static int os_clock (lua_State *L) { - lua_pushnumber(L, ((lua_Number)clock())/(lua_Number)CLOCKS_PER_SEC); - return 1; -} - - -/* -** {====================================================== -** Time/Date operations -** { year=%Y, month=%m, day=%d, hour=%H, min=%M, sec=%S, -** wday=%w+1, yday=%j, isdst=? } -** ======================================================= -*/ - -static void setfield (lua_State *L, const char *key, int value) { - lua_pushinteger(L, value); - lua_setfield(L, -2, key); -} - -static void setboolfield (lua_State *L, const char *key, int value) { - if (value < 0) /* undefined? */ - return; /* does not set field */ - lua_pushboolean(L, value); - lua_setfield(L, -2, key); -} - - -/* -** Set all fields from structure 'tm' in the table on top of the stack -*/ -static void setallfields (lua_State *L, struct tm *stm) { - setfield(L, "sec", stm->tm_sec); - setfield(L, "min", stm->tm_min); - setfield(L, "hour", stm->tm_hour); - setfield(L, "day", stm->tm_mday); - setfield(L, "month", stm->tm_mon + 1); - setfield(L, "year", stm->tm_year + 1900); - setfield(L, "wday", stm->tm_wday + 1); - setfield(L, "yday", stm->tm_yday + 1); - setboolfield(L, "isdst", stm->tm_isdst); -} - - -static int getboolfield (lua_State *L, const char *key) { - int res; - res = (lua_getfield(L, -1, key) == LUA_TNIL) ? -1 : lua_toboolean(L, -1); - lua_pop(L, 1); - return res; -} - - -/* maximum value for date fields (to avoid arithmetic overflows with 'int') */ -#if !defined(L_MAXDATEFIELD) -#define L_MAXDATEFIELD (INT_MAX / 2) -#endif - -static int getfield (lua_State *L, const char *key, int d, int delta) { - int isnum; - int t = lua_getfield(L, -1, key); /* get field and its type */ - lua_Integer res = lua_tointegerx(L, -1, &isnum); - if (!isnum) { /* field is not an integer? */ - if (t != LUA_TNIL) /* some other value? */ - return luaL_error(L, "field '%s' is not an integer", key); - else if (d < 0) /* absent field; no default? */ - return luaL_error(L, "field '%s' missing in date table", key); - res = d; - } - else { - if (!(-L_MAXDATEFIELD <= res && res <= L_MAXDATEFIELD)) - return luaL_error(L, "field '%s' is out-of-bound", key); - res -= delta; - } - lua_pop(L, 1); - return (int)res; -} - - -static const char *checkoption (lua_State *L, const char *conv, - ptrdiff_t convlen, char *buff) { - const char *option = LUA_STRFTIMEOPTIONS; - int oplen = 1; /* length of options being checked */ - for (; *option != '\0' && oplen <= convlen; option += oplen) { - if (*option == '|') /* next block? */ - oplen++; /* will check options with next length (+1) */ - else if (memcmp(conv, option, oplen) == 0) { /* match? */ - memcpy(buff, conv, oplen); /* copy valid option to buffer */ - buff[oplen] = '\0'; - return conv + oplen; /* return next item */ - } - } - luaL_argerror(L, 1, - lua_pushfstring(L, "invalid conversion specifier '%%%s'", conv)); - return conv; /* to avoid warnings */ -} - - -/* maximum size for an individual 'strftime' item */ -#define SIZETIMEFMT 250 - - -static int os_date (lua_State *L) { - size_t slen; - const char *s = luaL_optlstring(L, 1, "%c", &slen); - time_t t = luaL_opt(L, l_checktime, 2, time(NULL)); - const char *se = s + slen; /* 's' end */ - struct tm tmr, *stm; - if (*s == '!') { /* UTC? */ - stm = l_gmtime(&t, &tmr); - s++; /* skip '!' */ - } - else - stm = l_localtime(&t, &tmr); - if (stm == NULL) /* invalid date? */ - luaL_error(L, "time result cannot be represented in this installation"); - if (strcmp(s, "*t") == 0) { - lua_createtable(L, 0, 9); /* 9 = number of fields */ - setallfields(L, stm); - } - else { - char cc[4]; /* buffer for individual conversion specifiers */ - luaL_Buffer b; - cc[0] = '%'; - luaL_buffinit(L, &b); - while (s < se) { - if (*s != '%') /* not a conversion specifier? */ - luaL_addchar(&b, *s++); - else { - size_t reslen; - char *buff = luaL_prepbuffsize(&b, SIZETIMEFMT); - s++; /* skip '%' */ - s = checkoption(L, s, se - s, cc + 1); /* copy specifier to 'cc' */ - reslen = strftime(buff, SIZETIMEFMT, cc, stm); - luaL_addsize(&b, reslen); - } - } - luaL_pushresult(&b); - } - return 1; -} - - -static int os_time (lua_State *L) { - time_t t; - if (lua_isnoneornil(L, 1)) /* called without args? */ - t = time(NULL); /* get current time */ - else { - struct tm ts; - luaL_checktype(L, 1, LUA_TTABLE); - lua_settop(L, 1); /* make sure table is at the top */ - ts.tm_sec = getfield(L, "sec", 0, 0); - ts.tm_min = getfield(L, "min", 0, 0); - ts.tm_hour = getfield(L, "hour", 12, 0); - ts.tm_mday = getfield(L, "day", -1, 0); - ts.tm_mon = getfield(L, "month", -1, 1); - ts.tm_year = getfield(L, "year", -1, 1900); - ts.tm_isdst = getboolfield(L, "isdst"); - t = mktime(&ts); - setallfields(L, &ts); /* update fields with normalized values */ - } - if (t != (time_t)(l_timet)t || t == (time_t)(-1)) - luaL_error(L, "time result cannot be represented in this installation"); - l_pushtime(L, t); - return 1; -} - - -static int os_difftime (lua_State *L) { - time_t t1 = l_checktime(L, 1); - time_t t2 = l_checktime(L, 2); - lua_pushnumber(L, (lua_Number)difftime(t1, t2)); - return 1; -} - -/* }====================================================== */ - - -static int os_setlocale (lua_State *L) { - static const int cat[] = {LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY, - LC_NUMERIC, LC_TIME}; - static const char *const catnames[] = {"all", "collate", "ctype", "monetary", - "numeric", "time", NULL}; - const char *l = luaL_optstring(L, 1, NULL); - int op = luaL_checkoption(L, 2, "all", catnames); - lua_pushstring(L, setlocale(cat[op], l)); - return 1; -} - - -static int os_exit (lua_State *L) { - int status; - if (lua_isboolean(L, 1)) - status = (lua_toboolean(L, 1) ? EXIT_SUCCESS : EXIT_FAILURE); - else - status = (int)luaL_optinteger(L, 1, EXIT_SUCCESS); - if (lua_toboolean(L, 2)) - lua_close(L); - if (L) exit(status); /* 'if' to avoid warnings for unreachable 'return' */ - return 0; -} - - -static const luaL_Reg syslib[] = { - {"clock", os_clock}, - {"date", os_date}, - {"difftime", os_difftime}, - {"execute", os_execute}, - {"exit", os_exit}, - {"getenv", os_getenv}, - {"remove", os_remove}, - {"rename", os_rename}, - {"setlocale", os_setlocale}, - {"time", os_time}, - {"tmpname", os_tmpname}, - {NULL, NULL} -}; - -/* }====================================================== */ - - - -LUAMOD_API int luaopen_os (lua_State *L) { - luaL_newlib(L, syslib); - return 1; -} - diff --git a/deps/rcheevos/test/lua/src/lparser.c b/deps/rcheevos/test/lua/src/lparser.c deleted file mode 100644 index cd4512d4d4..0000000000 --- a/deps/rcheevos/test/lua/src/lparser.c +++ /dev/null @@ -1,1650 +0,0 @@ -/* -** $Id: lparser.c,v 2.155 2016/08/01 19:51:24 roberto Exp $ -** Lua Parser -** See Copyright Notice in lua.h -*/ - -#define lparser_c -#define LUA_CORE - -#include "lprefix.h" - - -#include - -#include "lua.h" - -#include "lcode.h" -#include "ldebug.h" -#include "ldo.h" -#include "lfunc.h" -#include "llex.h" -#include "lmem.h" -#include "lobject.h" -#include "lopcodes.h" -#include "lparser.h" -#include "lstate.h" -#include "lstring.h" -#include "ltable.h" - - - -/* maximum number of local variables per function (must be smaller - than 250, due to the bytecode format) */ -#define MAXVARS 200 - - -#define hasmultret(k) ((k) == VCALL || (k) == VVARARG) - - -/* because all strings are unified by the scanner, the parser - can use pointer equality for string equality */ -#define eqstr(a,b) ((a) == (b)) - - -/* -** nodes for block list (list of active blocks) -*/ -typedef struct BlockCnt { - struct BlockCnt *previous; /* chain */ - int firstlabel; /* index of first label in this block */ - int firstgoto; /* index of first pending goto in this block */ - lu_byte nactvar; /* # active locals outside the block */ - lu_byte upval; /* true if some variable in the block is an upvalue */ - lu_byte isloop; /* true if 'block' is a loop */ -} BlockCnt; - - - -/* -** prototypes for recursive non-terminal functions -*/ -static void statement (LexState *ls); -static void expr (LexState *ls, expdesc *v); - - -/* semantic error */ -static l_noret semerror (LexState *ls, const char *msg) { - ls->t.token = 0; /* remove "near " from final message */ - luaX_syntaxerror(ls, msg); -} - - -static l_noret error_expected (LexState *ls, int token) { - luaX_syntaxerror(ls, - luaO_pushfstring(ls->L, "%s expected", luaX_token2str(ls, token))); -} - - -static l_noret errorlimit (FuncState *fs, int limit, const char *what) { - lua_State *L = fs->ls->L; - const char *msg; - int line = fs->f->linedefined; - const char *where = (line == 0) - ? "main function" - : luaO_pushfstring(L, "function at line %d", line); - msg = luaO_pushfstring(L, "too many %s (limit is %d) in %s", - what, limit, where); - luaX_syntaxerror(fs->ls, msg); -} - - -static void checklimit (FuncState *fs, int v, int l, const char *what) { - if (v > l) errorlimit(fs, l, what); -} - - -static int testnext (LexState *ls, int c) { - if (ls->t.token == c) { - luaX_next(ls); - return 1; - } - else return 0; -} - - -static void check (LexState *ls, int c) { - if (ls->t.token != c) - error_expected(ls, c); -} - - -static void checknext (LexState *ls, int c) { - check(ls, c); - luaX_next(ls); -} - - -#define check_condition(ls,c,msg) { if (!(c)) luaX_syntaxerror(ls, msg); } - - - -static void check_match (LexState *ls, int what, int who, int where) { - if (!testnext(ls, what)) { - if (where == ls->linenumber) - error_expected(ls, what); - else { - luaX_syntaxerror(ls, luaO_pushfstring(ls->L, - "%s expected (to close %s at line %d)", - luaX_token2str(ls, what), luaX_token2str(ls, who), where)); - } - } -} - - -static TString *str_checkname (LexState *ls) { - TString *ts; - check(ls, TK_NAME); - ts = ls->t.seminfo.ts; - luaX_next(ls); - return ts; -} - - -static void init_exp (expdesc *e, expkind k, int i) { - e->f = e->t = NO_JUMP; - e->k = k; - e->u.info = i; -} - - -static void codestring (LexState *ls, expdesc *e, TString *s) { - init_exp(e, VK, luaK_stringK(ls->fs, s)); -} - - -static void checkname (LexState *ls, expdesc *e) { - codestring(ls, e, str_checkname(ls)); -} - - -static int registerlocalvar (LexState *ls, TString *varname) { - FuncState *fs = ls->fs; - Proto *f = fs->f; - int oldsize = f->sizelocvars; - luaM_growvector(ls->L, f->locvars, fs->nlocvars, f->sizelocvars, - LocVar, SHRT_MAX, "local variables"); - while (oldsize < f->sizelocvars) - f->locvars[oldsize++].varname = NULL; - f->locvars[fs->nlocvars].varname = varname; - luaC_objbarrier(ls->L, f, varname); - return fs->nlocvars++; -} - - -static void new_localvar (LexState *ls, TString *name) { - FuncState *fs = ls->fs; - Dyndata *dyd = ls->dyd; - int reg = registerlocalvar(ls, name); - checklimit(fs, dyd->actvar.n + 1 - fs->firstlocal, - MAXVARS, "local variables"); - luaM_growvector(ls->L, dyd->actvar.arr, dyd->actvar.n + 1, - dyd->actvar.size, Vardesc, MAX_INT, "local variables"); - dyd->actvar.arr[dyd->actvar.n++].idx = cast(short, reg); -} - - -static void new_localvarliteral_ (LexState *ls, const char *name, size_t sz) { - new_localvar(ls, luaX_newstring(ls, name, sz)); -} - -#define new_localvarliteral(ls,v) \ - new_localvarliteral_(ls, "" v, (sizeof(v)/sizeof(char))-1) - - -static LocVar *getlocvar (FuncState *fs, int i) { - int idx = fs->ls->dyd->actvar.arr[fs->firstlocal + i].idx; - lua_assert(idx < fs->nlocvars); - return &fs->f->locvars[idx]; -} - - -static void adjustlocalvars (LexState *ls, int nvars) { - FuncState *fs = ls->fs; - fs->nactvar = cast_byte(fs->nactvar + nvars); - for (; nvars; nvars--) { - getlocvar(fs, fs->nactvar - nvars)->startpc = fs->pc; - } -} - - -static void removevars (FuncState *fs, int tolevel) { - fs->ls->dyd->actvar.n -= (fs->nactvar - tolevel); - while (fs->nactvar > tolevel) - getlocvar(fs, --fs->nactvar)->endpc = fs->pc; -} - - -static int searchupvalue (FuncState *fs, TString *name) { - int i; - Upvaldesc *up = fs->f->upvalues; - for (i = 0; i < fs->nups; i++) { - if (eqstr(up[i].name, name)) return i; - } - return -1; /* not found */ -} - - -static int newupvalue (FuncState *fs, TString *name, expdesc *v) { - Proto *f = fs->f; - int oldsize = f->sizeupvalues; - checklimit(fs, fs->nups + 1, MAXUPVAL, "upvalues"); - luaM_growvector(fs->ls->L, f->upvalues, fs->nups, f->sizeupvalues, - Upvaldesc, MAXUPVAL, "upvalues"); - while (oldsize < f->sizeupvalues) - f->upvalues[oldsize++].name = NULL; - f->upvalues[fs->nups].instack = (v->k == VLOCAL); - f->upvalues[fs->nups].idx = cast_byte(v->u.info); - f->upvalues[fs->nups].name = name; - luaC_objbarrier(fs->ls->L, f, name); - return fs->nups++; -} - - -static int searchvar (FuncState *fs, TString *n) { - int i; - for (i = cast_int(fs->nactvar) - 1; i >= 0; i--) { - if (eqstr(n, getlocvar(fs, i)->varname)) - return i; - } - return -1; /* not found */ -} - - -/* - Mark block where variable at given level was defined - (to emit close instructions later). -*/ -static void markupval (FuncState *fs, int level) { - BlockCnt *bl = fs->bl; - while (bl->nactvar > level) - bl = bl->previous; - bl->upval = 1; -} - - -/* - Find variable with given name 'n'. If it is an upvalue, add this - upvalue into all intermediate functions. -*/ -static void singlevaraux (FuncState *fs, TString *n, expdesc *var, int base) { - if (fs == NULL) /* no more levels? */ - init_exp(var, VVOID, 0); /* default is global */ - else { - int v = searchvar(fs, n); /* look up locals at current level */ - if (v >= 0) { /* found? */ - init_exp(var, VLOCAL, v); /* variable is local */ - if (!base) - markupval(fs, v); /* local will be used as an upval */ - } - else { /* not found as local at current level; try upvalues */ - int idx = searchupvalue(fs, n); /* try existing upvalues */ - if (idx < 0) { /* not found? */ - singlevaraux(fs->prev, n, var, 0); /* try upper levels */ - if (var->k == VVOID) /* not found? */ - return; /* it is a global */ - /* else was LOCAL or UPVAL */ - idx = newupvalue(fs, n, var); /* will be a new upvalue */ - } - init_exp(var, VUPVAL, idx); /* new or old upvalue */ - } - } -} - - -static void singlevar (LexState *ls, expdesc *var) { - TString *varname = str_checkname(ls); - FuncState *fs = ls->fs; - singlevaraux(fs, varname, var, 1); - if (var->k == VVOID) { /* global name? */ - expdesc key; - singlevaraux(fs, ls->envn, var, 1); /* get environment variable */ - lua_assert(var->k != VVOID); /* this one must exist */ - codestring(ls, &key, varname); /* key is variable name */ - luaK_indexed(fs, var, &key); /* env[varname] */ - } -} - - -static void adjust_assign (LexState *ls, int nvars, int nexps, expdesc *e) { - FuncState *fs = ls->fs; - int extra = nvars - nexps; - if (hasmultret(e->k)) { - extra++; /* includes call itself */ - if (extra < 0) extra = 0; - luaK_setreturns(fs, e, extra); /* last exp. provides the difference */ - if (extra > 1) luaK_reserveregs(fs, extra-1); - } - else { - if (e->k != VVOID) luaK_exp2nextreg(fs, e); /* close last expression */ - if (extra > 0) { - int reg = fs->freereg; - luaK_reserveregs(fs, extra); - luaK_nil(fs, reg, extra); - } - } - if (nexps > nvars) - ls->fs->freereg -= nexps - nvars; /* remove extra values */ -} - - -static void enterlevel (LexState *ls) { - lua_State *L = ls->L; - ++L->nCcalls; - checklimit(ls->fs, L->nCcalls, LUAI_MAXCCALLS, "C levels"); -} - - -#define leavelevel(ls) ((ls)->L->nCcalls--) - - -static void closegoto (LexState *ls, int g, Labeldesc *label) { - int i; - FuncState *fs = ls->fs; - Labellist *gl = &ls->dyd->gt; - Labeldesc *gt = &gl->arr[g]; - lua_assert(eqstr(gt->name, label->name)); - if (gt->nactvar < label->nactvar) { - TString *vname = getlocvar(fs, gt->nactvar)->varname; - const char *msg = luaO_pushfstring(ls->L, - " at line %d jumps into the scope of local '%s'", - getstr(gt->name), gt->line, getstr(vname)); - semerror(ls, msg); - } - luaK_patchlist(fs, gt->pc, label->pc); - /* remove goto from pending list */ - for (i = g; i < gl->n - 1; i++) - gl->arr[i] = gl->arr[i + 1]; - gl->n--; -} - - -/* -** try to close a goto with existing labels; this solves backward jumps -*/ -static int findlabel (LexState *ls, int g) { - int i; - BlockCnt *bl = ls->fs->bl; - Dyndata *dyd = ls->dyd; - Labeldesc *gt = &dyd->gt.arr[g]; - /* check labels in current block for a match */ - for (i = bl->firstlabel; i < dyd->label.n; i++) { - Labeldesc *lb = &dyd->label.arr[i]; - if (eqstr(lb->name, gt->name)) { /* correct label? */ - if (gt->nactvar > lb->nactvar && - (bl->upval || dyd->label.n > bl->firstlabel)) - luaK_patchclose(ls->fs, gt->pc, lb->nactvar); - closegoto(ls, g, lb); /* close it */ - return 1; - } - } - return 0; /* label not found; cannot close goto */ -} - - -static int newlabelentry (LexState *ls, Labellist *l, TString *name, - int line, int pc) { - int n = l->n; - luaM_growvector(ls->L, l->arr, n, l->size, - Labeldesc, SHRT_MAX, "labels/gotos"); - l->arr[n].name = name; - l->arr[n].line = line; - l->arr[n].nactvar = ls->fs->nactvar; - l->arr[n].pc = pc; - l->n = n + 1; - return n; -} - - -/* -** check whether new label 'lb' matches any pending gotos in current -** block; solves forward jumps -*/ -static void findgotos (LexState *ls, Labeldesc *lb) { - Labellist *gl = &ls->dyd->gt; - int i = ls->fs->bl->firstgoto; - while (i < gl->n) { - if (eqstr(gl->arr[i].name, lb->name)) - closegoto(ls, i, lb); - else - i++; - } -} - - -/* -** export pending gotos to outer level, to check them against -** outer labels; if the block being exited has upvalues, and -** the goto exits the scope of any variable (which can be the -** upvalue), close those variables being exited. -*/ -static void movegotosout (FuncState *fs, BlockCnt *bl) { - int i = bl->firstgoto; - Labellist *gl = &fs->ls->dyd->gt; - /* correct pending gotos to current block and try to close it - with visible labels */ - while (i < gl->n) { - Labeldesc *gt = &gl->arr[i]; - if (gt->nactvar > bl->nactvar) { - if (bl->upval) - luaK_patchclose(fs, gt->pc, bl->nactvar); - gt->nactvar = bl->nactvar; - } - if (!findlabel(fs->ls, i)) - i++; /* move to next one */ - } -} - - -static void enterblock (FuncState *fs, BlockCnt *bl, lu_byte isloop) { - bl->isloop = isloop; - bl->nactvar = fs->nactvar; - bl->firstlabel = fs->ls->dyd->label.n; - bl->firstgoto = fs->ls->dyd->gt.n; - bl->upval = 0; - bl->previous = fs->bl; - fs->bl = bl; - lua_assert(fs->freereg == fs->nactvar); -} - - -/* -** create a label named 'break' to resolve break statements -*/ -static void breaklabel (LexState *ls) { - TString *n = luaS_new(ls->L, "break"); - int l = newlabelentry(ls, &ls->dyd->label, n, 0, ls->fs->pc); - findgotos(ls, &ls->dyd->label.arr[l]); -} - -/* -** generates an error for an undefined 'goto'; choose appropriate -** message when label name is a reserved word (which can only be 'break') -*/ -static l_noret undefgoto (LexState *ls, Labeldesc *gt) { - const char *msg = isreserved(gt->name) - ? "<%s> at line %d not inside a loop" - : "no visible label '%s' for at line %d"; - msg = luaO_pushfstring(ls->L, msg, getstr(gt->name), gt->line); - semerror(ls, msg); -} - - -static void leaveblock (FuncState *fs) { - BlockCnt *bl = fs->bl; - LexState *ls = fs->ls; - if (bl->previous && bl->upval) { - /* create a 'jump to here' to close upvalues */ - int j = luaK_jump(fs); - luaK_patchclose(fs, j, bl->nactvar); - luaK_patchtohere(fs, j); - } - if (bl->isloop) - breaklabel(ls); /* close pending breaks */ - fs->bl = bl->previous; - removevars(fs, bl->nactvar); - lua_assert(bl->nactvar == fs->nactvar); - fs->freereg = fs->nactvar; /* free registers */ - ls->dyd->label.n = bl->firstlabel; /* remove local labels */ - if (bl->previous) /* inner block? */ - movegotosout(fs, bl); /* update pending gotos to outer block */ - else if (bl->firstgoto < ls->dyd->gt.n) /* pending gotos in outer block? */ - undefgoto(ls, &ls->dyd->gt.arr[bl->firstgoto]); /* error */ -} - - -/* -** adds a new prototype into list of prototypes -*/ -static Proto *addprototype (LexState *ls) { - Proto *clp; - lua_State *L = ls->L; - FuncState *fs = ls->fs; - Proto *f = fs->f; /* prototype of current function */ - if (fs->np >= f->sizep) { - int oldsize = f->sizep; - luaM_growvector(L, f->p, fs->np, f->sizep, Proto *, MAXARG_Bx, "functions"); - while (oldsize < f->sizep) - f->p[oldsize++] = NULL; - } - f->p[fs->np++] = clp = luaF_newproto(L); - luaC_objbarrier(L, f, clp); - return clp; -} - - -/* -** codes instruction to create new closure in parent function. -** The OP_CLOSURE instruction must use the last available register, -** so that, if it invokes the GC, the GC knows which registers -** are in use at that time. -*/ -static void codeclosure (LexState *ls, expdesc *v) { - FuncState *fs = ls->fs->prev; - init_exp(v, VRELOCABLE, luaK_codeABx(fs, OP_CLOSURE, 0, fs->np - 1)); - luaK_exp2nextreg(fs, v); /* fix it at the last register */ -} - - -static void open_func (LexState *ls, FuncState *fs, BlockCnt *bl) { - Proto *f; - fs->prev = ls->fs; /* linked list of funcstates */ - fs->ls = ls; - ls->fs = fs; - fs->pc = 0; - fs->lasttarget = 0; - fs->jpc = NO_JUMP; - fs->freereg = 0; - fs->nk = 0; - fs->np = 0; - fs->nups = 0; - fs->nlocvars = 0; - fs->nactvar = 0; - fs->firstlocal = ls->dyd->actvar.n; - fs->bl = NULL; - f = fs->f; - f->source = ls->source; - f->maxstacksize = 2; /* registers 0/1 are always valid */ - enterblock(fs, bl, 0); -} - - -static void close_func (LexState *ls) { - lua_State *L = ls->L; - FuncState *fs = ls->fs; - Proto *f = fs->f; - luaK_ret(fs, 0, 0); /* final return */ - leaveblock(fs); - luaM_reallocvector(L, f->code, f->sizecode, fs->pc, Instruction); - f->sizecode = fs->pc; - luaM_reallocvector(L, f->lineinfo, f->sizelineinfo, fs->pc, int); - f->sizelineinfo = fs->pc; - luaM_reallocvector(L, f->k, f->sizek, fs->nk, TValue); - f->sizek = fs->nk; - luaM_reallocvector(L, f->p, f->sizep, fs->np, Proto *); - f->sizep = fs->np; - luaM_reallocvector(L, f->locvars, f->sizelocvars, fs->nlocvars, LocVar); - f->sizelocvars = fs->nlocvars; - luaM_reallocvector(L, f->upvalues, f->sizeupvalues, fs->nups, Upvaldesc); - f->sizeupvalues = fs->nups; - lua_assert(fs->bl == NULL); - ls->fs = fs->prev; - luaC_checkGC(L); -} - - - -/*============================================================*/ -/* GRAMMAR RULES */ -/*============================================================*/ - - -/* -** check whether current token is in the follow set of a block. -** 'until' closes syntactical blocks, but do not close scope, -** so it is handled in separate. -*/ -static int block_follow (LexState *ls, int withuntil) { - switch (ls->t.token) { - case TK_ELSE: case TK_ELSEIF: - case TK_END: case TK_EOS: - return 1; - case TK_UNTIL: return withuntil; - default: return 0; - } -} - - -static void statlist (LexState *ls) { - /* statlist -> { stat [';'] } */ - while (!block_follow(ls, 1)) { - if (ls->t.token == TK_RETURN) { - statement(ls); - return; /* 'return' must be last statement */ - } - statement(ls); - } -} - - -static void fieldsel (LexState *ls, expdesc *v) { - /* fieldsel -> ['.' | ':'] NAME */ - FuncState *fs = ls->fs; - expdesc key; - luaK_exp2anyregup(fs, v); - luaX_next(ls); /* skip the dot or colon */ - checkname(ls, &key); - luaK_indexed(fs, v, &key); -} - - -static void yindex (LexState *ls, expdesc *v) { - /* index -> '[' expr ']' */ - luaX_next(ls); /* skip the '[' */ - expr(ls, v); - luaK_exp2val(ls->fs, v); - checknext(ls, ']'); -} - - -/* -** {====================================================================== -** Rules for Constructors -** ======================================================================= -*/ - - -struct ConsControl { - expdesc v; /* last list item read */ - expdesc *t; /* table descriptor */ - int nh; /* total number of 'record' elements */ - int na; /* total number of array elements */ - int tostore; /* number of array elements pending to be stored */ -}; - - -static void recfield (LexState *ls, struct ConsControl *cc) { - /* recfield -> (NAME | '['exp1']') = exp1 */ - FuncState *fs = ls->fs; - int reg = ls->fs->freereg; - expdesc key, val; - int rkkey; - if (ls->t.token == TK_NAME) { - checklimit(fs, cc->nh, MAX_INT, "items in a constructor"); - checkname(ls, &key); - } - else /* ls->t.token == '[' */ - yindex(ls, &key); - cc->nh++; - checknext(ls, '='); - rkkey = luaK_exp2RK(fs, &key); - expr(ls, &val); - luaK_codeABC(fs, OP_SETTABLE, cc->t->u.info, rkkey, luaK_exp2RK(fs, &val)); - fs->freereg = reg; /* free registers */ -} - - -static void closelistfield (FuncState *fs, struct ConsControl *cc) { - if (cc->v.k == VVOID) return; /* there is no list item */ - luaK_exp2nextreg(fs, &cc->v); - cc->v.k = VVOID; - if (cc->tostore == LFIELDS_PER_FLUSH) { - luaK_setlist(fs, cc->t->u.info, cc->na, cc->tostore); /* flush */ - cc->tostore = 0; /* no more items pending */ - } -} - - -static void lastlistfield (FuncState *fs, struct ConsControl *cc) { - if (cc->tostore == 0) return; - if (hasmultret(cc->v.k)) { - luaK_setmultret(fs, &cc->v); - luaK_setlist(fs, cc->t->u.info, cc->na, LUA_MULTRET); - cc->na--; /* do not count last expression (unknown number of elements) */ - } - else { - if (cc->v.k != VVOID) - luaK_exp2nextreg(fs, &cc->v); - luaK_setlist(fs, cc->t->u.info, cc->na, cc->tostore); - } -} - - -static void listfield (LexState *ls, struct ConsControl *cc) { - /* listfield -> exp */ - expr(ls, &cc->v); - checklimit(ls->fs, cc->na, MAX_INT, "items in a constructor"); - cc->na++; - cc->tostore++; -} - - -static void field (LexState *ls, struct ConsControl *cc) { - /* field -> listfield | recfield */ - switch(ls->t.token) { - case TK_NAME: { /* may be 'listfield' or 'recfield' */ - if (luaX_lookahead(ls) != '=') /* expression? */ - listfield(ls, cc); - else - recfield(ls, cc); - break; - } - case '[': { - recfield(ls, cc); - break; - } - default: { - listfield(ls, cc); - break; - } - } -} - - -static void constructor (LexState *ls, expdesc *t) { - /* constructor -> '{' [ field { sep field } [sep] ] '}' - sep -> ',' | ';' */ - FuncState *fs = ls->fs; - int line = ls->linenumber; - int pc = luaK_codeABC(fs, OP_NEWTABLE, 0, 0, 0); - struct ConsControl cc; - cc.na = cc.nh = cc.tostore = 0; - cc.t = t; - init_exp(t, VRELOCABLE, pc); - init_exp(&cc.v, VVOID, 0); /* no value (yet) */ - luaK_exp2nextreg(ls->fs, t); /* fix it at stack top */ - checknext(ls, '{'); - do { - lua_assert(cc.v.k == VVOID || cc.tostore > 0); - if (ls->t.token == '}') break; - closelistfield(fs, &cc); - field(ls, &cc); - } while (testnext(ls, ',') || testnext(ls, ';')); - check_match(ls, '}', '{', line); - lastlistfield(fs, &cc); - SETARG_B(fs->f->code[pc], luaO_int2fb(cc.na)); /* set initial array size */ - SETARG_C(fs->f->code[pc], luaO_int2fb(cc.nh)); /* set initial table size */ -} - -/* }====================================================================== */ - - - -static void parlist (LexState *ls) { - /* parlist -> [ param { ',' param } ] */ - FuncState *fs = ls->fs; - Proto *f = fs->f; - int nparams = 0; - f->is_vararg = 0; - if (ls->t.token != ')') { /* is 'parlist' not empty? */ - do { - switch (ls->t.token) { - case TK_NAME: { /* param -> NAME */ - new_localvar(ls, str_checkname(ls)); - nparams++; - break; - } - case TK_DOTS: { /* param -> '...' */ - luaX_next(ls); - f->is_vararg = 1; /* declared vararg */ - break; - } - default: luaX_syntaxerror(ls, " or '...' expected"); - } - } while (!f->is_vararg && testnext(ls, ',')); - } - adjustlocalvars(ls, nparams); - f->numparams = cast_byte(fs->nactvar); - luaK_reserveregs(fs, fs->nactvar); /* reserve register for parameters */ -} - - -static void body (LexState *ls, expdesc *e, int ismethod, int line) { - /* body -> '(' parlist ')' block END */ - FuncState new_fs; - BlockCnt bl; - new_fs.f = addprototype(ls); - new_fs.f->linedefined = line; - open_func(ls, &new_fs, &bl); - checknext(ls, '('); - if (ismethod) { - new_localvarliteral(ls, "self"); /* create 'self' parameter */ - adjustlocalvars(ls, 1); - } - parlist(ls); - checknext(ls, ')'); - statlist(ls); - new_fs.f->lastlinedefined = ls->linenumber; - check_match(ls, TK_END, TK_FUNCTION, line); - codeclosure(ls, e); - close_func(ls); -} - - -static int explist (LexState *ls, expdesc *v) { - /* explist -> expr { ',' expr } */ - int n = 1; /* at least one expression */ - expr(ls, v); - while (testnext(ls, ',')) { - luaK_exp2nextreg(ls->fs, v); - expr(ls, v); - n++; - } - return n; -} - - -static void funcargs (LexState *ls, expdesc *f, int line) { - FuncState *fs = ls->fs; - expdesc args; - int base, nparams; - switch (ls->t.token) { - case '(': { /* funcargs -> '(' [ explist ] ')' */ - luaX_next(ls); - if (ls->t.token == ')') /* arg list is empty? */ - args.k = VVOID; - else { - explist(ls, &args); - luaK_setmultret(fs, &args); - } - check_match(ls, ')', '(', line); - break; - } - case '{': { /* funcargs -> constructor */ - constructor(ls, &args); - break; - } - case TK_STRING: { /* funcargs -> STRING */ - codestring(ls, &args, ls->t.seminfo.ts); - luaX_next(ls); /* must use 'seminfo' before 'next' */ - break; - } - default: { - luaX_syntaxerror(ls, "function arguments expected"); - } - } - lua_assert(f->k == VNONRELOC); - base = f->u.info; /* base register for call */ - if (hasmultret(args.k)) - nparams = LUA_MULTRET; /* open call */ - else { - if (args.k != VVOID) - luaK_exp2nextreg(fs, &args); /* close last argument */ - nparams = fs->freereg - (base+1); - } - init_exp(f, VCALL, luaK_codeABC(fs, OP_CALL, base, nparams+1, 2)); - luaK_fixline(fs, line); - fs->freereg = base+1; /* call remove function and arguments and leaves - (unless changed) one result */ -} - - - - -/* -** {====================================================================== -** Expression parsing -** ======================================================================= -*/ - - -static void primaryexp (LexState *ls, expdesc *v) { - /* primaryexp -> NAME | '(' expr ')' */ - switch (ls->t.token) { - case '(': { - int line = ls->linenumber; - luaX_next(ls); - expr(ls, v); - check_match(ls, ')', '(', line); - luaK_dischargevars(ls->fs, v); - return; - } - case TK_NAME: { - singlevar(ls, v); - return; - } - default: { - luaX_syntaxerror(ls, "unexpected symbol"); - } - } -} - - -static void suffixedexp (LexState *ls, expdesc *v) { - /* suffixedexp -> - primaryexp { '.' NAME | '[' exp ']' | ':' NAME funcargs | funcargs } */ - FuncState *fs = ls->fs; - int line = ls->linenumber; - primaryexp(ls, v); - for (;;) { - switch (ls->t.token) { - case '.': { /* fieldsel */ - fieldsel(ls, v); - break; - } - case '[': { /* '[' exp1 ']' */ - expdesc key; - luaK_exp2anyregup(fs, v); - yindex(ls, &key); - luaK_indexed(fs, v, &key); - break; - } - case ':': { /* ':' NAME funcargs */ - expdesc key; - luaX_next(ls); - checkname(ls, &key); - luaK_self(fs, v, &key); - funcargs(ls, v, line); - break; - } - case '(': case TK_STRING: case '{': { /* funcargs */ - luaK_exp2nextreg(fs, v); - funcargs(ls, v, line); - break; - } - default: return; - } - } -} - - -static void simpleexp (LexState *ls, expdesc *v) { - /* simpleexp -> FLT | INT | STRING | NIL | TRUE | FALSE | ... | - constructor | FUNCTION body | suffixedexp */ - switch (ls->t.token) { - case TK_FLT: { - init_exp(v, VKFLT, 0); - v->u.nval = ls->t.seminfo.r; - break; - } - case TK_INT: { - init_exp(v, VKINT, 0); - v->u.ival = ls->t.seminfo.i; - break; - } - case TK_STRING: { - codestring(ls, v, ls->t.seminfo.ts); - break; - } - case TK_NIL: { - init_exp(v, VNIL, 0); - break; - } - case TK_TRUE: { - init_exp(v, VTRUE, 0); - break; - } - case TK_FALSE: { - init_exp(v, VFALSE, 0); - break; - } - case TK_DOTS: { /* vararg */ - FuncState *fs = ls->fs; - check_condition(ls, fs->f->is_vararg, - "cannot use '...' outside a vararg function"); - init_exp(v, VVARARG, luaK_codeABC(fs, OP_VARARG, 0, 1, 0)); - break; - } - case '{': { /* constructor */ - constructor(ls, v); - return; - } - case TK_FUNCTION: { - luaX_next(ls); - body(ls, v, 0, ls->linenumber); - return; - } - default: { - suffixedexp(ls, v); - return; - } - } - luaX_next(ls); -} - - -static UnOpr getunopr (int op) { - switch (op) { - case TK_NOT: return OPR_NOT; - case '-': return OPR_MINUS; - case '~': return OPR_BNOT; - case '#': return OPR_LEN; - default: return OPR_NOUNOPR; - } -} - - -static BinOpr getbinopr (int op) { - switch (op) { - case '+': return OPR_ADD; - case '-': return OPR_SUB; - case '*': return OPR_MUL; - case '%': return OPR_MOD; - case '^': return OPR_POW; - case '/': return OPR_DIV; - case TK_IDIV: return OPR_IDIV; - case '&': return OPR_BAND; - case '|': return OPR_BOR; - case '~': return OPR_BXOR; - case TK_SHL: return OPR_SHL; - case TK_SHR: return OPR_SHR; - case TK_CONCAT: return OPR_CONCAT; - case TK_NE: return OPR_NE; - case TK_EQ: return OPR_EQ; - case '<': return OPR_LT; - case TK_LE: return OPR_LE; - case '>': return OPR_GT; - case TK_GE: return OPR_GE; - case TK_AND: return OPR_AND; - case TK_OR: return OPR_OR; - default: return OPR_NOBINOPR; - } -} - - -static const struct { - lu_byte left; /* left priority for each binary operator */ - lu_byte right; /* right priority */ -} priority[] = { /* ORDER OPR */ - {10, 10}, {10, 10}, /* '+' '-' */ - {11, 11}, {11, 11}, /* '*' '%' */ - {14, 13}, /* '^' (right associative) */ - {11, 11}, {11, 11}, /* '/' '//' */ - {6, 6}, {4, 4}, {5, 5}, /* '&' '|' '~' */ - {7, 7}, {7, 7}, /* '<<' '>>' */ - {9, 8}, /* '..' (right associative) */ - {3, 3}, {3, 3}, {3, 3}, /* ==, <, <= */ - {3, 3}, {3, 3}, {3, 3}, /* ~=, >, >= */ - {2, 2}, {1, 1} /* and, or */ -}; - -#define UNARY_PRIORITY 12 /* priority for unary operators */ - - -/* -** subexpr -> (simpleexp | unop subexpr) { binop subexpr } -** where 'binop' is any binary operator with a priority higher than 'limit' -*/ -static BinOpr subexpr (LexState *ls, expdesc *v, int limit) { - BinOpr op; - UnOpr uop; - enterlevel(ls); - uop = getunopr(ls->t.token); - if (uop != OPR_NOUNOPR) { - int line = ls->linenumber; - luaX_next(ls); - subexpr(ls, v, UNARY_PRIORITY); - luaK_prefix(ls->fs, uop, v, line); - } - else simpleexp(ls, v); - /* expand while operators have priorities higher than 'limit' */ - op = getbinopr(ls->t.token); - while (op != OPR_NOBINOPR && priority[op].left > limit) { - expdesc v2; - BinOpr nextop; - int line = ls->linenumber; - luaX_next(ls); - luaK_infix(ls->fs, op, v); - /* read sub-expression with higher priority */ - nextop = subexpr(ls, &v2, priority[op].right); - luaK_posfix(ls->fs, op, v, &v2, line); - op = nextop; - } - leavelevel(ls); - return op; /* return first untreated operator */ -} - - -static void expr (LexState *ls, expdesc *v) { - subexpr(ls, v, 0); -} - -/* }==================================================================== */ - - - -/* -** {====================================================================== -** Rules for Statements -** ======================================================================= -*/ - - -static void block (LexState *ls) { - /* block -> statlist */ - FuncState *fs = ls->fs; - BlockCnt bl; - enterblock(fs, &bl, 0); - statlist(ls); - leaveblock(fs); -} - - -/* -** structure to chain all variables in the left-hand side of an -** assignment -*/ -struct LHS_assign { - struct LHS_assign *prev; - expdesc v; /* variable (global, local, upvalue, or indexed) */ -}; - - -/* -** check whether, in an assignment to an upvalue/local variable, the -** upvalue/local variable is begin used in a previous assignment to a -** table. If so, save original upvalue/local value in a safe place and -** use this safe copy in the previous assignment. -*/ -static void check_conflict (LexState *ls, struct LHS_assign *lh, expdesc *v) { - FuncState *fs = ls->fs; - int extra = fs->freereg; /* eventual position to save local variable */ - int conflict = 0; - for (; lh; lh = lh->prev) { /* check all previous assignments */ - if (lh->v.k == VINDEXED) { /* assigning to a table? */ - /* table is the upvalue/local being assigned now? */ - if (lh->v.u.ind.vt == v->k && lh->v.u.ind.t == v->u.info) { - conflict = 1; - lh->v.u.ind.vt = VLOCAL; - lh->v.u.ind.t = extra; /* previous assignment will use safe copy */ - } - /* index is the local being assigned? (index cannot be upvalue) */ - if (v->k == VLOCAL && lh->v.u.ind.idx == v->u.info) { - conflict = 1; - lh->v.u.ind.idx = extra; /* previous assignment will use safe copy */ - } - } - } - if (conflict) { - /* copy upvalue/local value to a temporary (in position 'extra') */ - OpCode op = (v->k == VLOCAL) ? OP_MOVE : OP_GETUPVAL; - luaK_codeABC(fs, op, extra, v->u.info, 0); - luaK_reserveregs(fs, 1); - } -} - - -static void assignment (LexState *ls, struct LHS_assign *lh, int nvars) { - expdesc e; - check_condition(ls, vkisvar(lh->v.k), "syntax error"); - if (testnext(ls, ',')) { /* assignment -> ',' suffixedexp assignment */ - struct LHS_assign nv; - nv.prev = lh; - suffixedexp(ls, &nv.v); - if (nv.v.k != VINDEXED) - check_conflict(ls, lh, &nv.v); - checklimit(ls->fs, nvars + ls->L->nCcalls, LUAI_MAXCCALLS, - "C levels"); - assignment(ls, &nv, nvars+1); - } - else { /* assignment -> '=' explist */ - int nexps; - checknext(ls, '='); - nexps = explist(ls, &e); - if (nexps != nvars) - adjust_assign(ls, nvars, nexps, &e); - else { - luaK_setoneret(ls->fs, &e); /* close last expression */ - luaK_storevar(ls->fs, &lh->v, &e); - return; /* avoid default */ - } - } - init_exp(&e, VNONRELOC, ls->fs->freereg-1); /* default assignment */ - luaK_storevar(ls->fs, &lh->v, &e); -} - - -static int cond (LexState *ls) { - /* cond -> exp */ - expdesc v; - expr(ls, &v); /* read condition */ - if (v.k == VNIL) v.k = VFALSE; /* 'falses' are all equal here */ - luaK_goiftrue(ls->fs, &v); - return v.f; -} - - -static void gotostat (LexState *ls, int pc) { - int line = ls->linenumber; - TString *label; - int g; - if (testnext(ls, TK_GOTO)) - label = str_checkname(ls); - else { - luaX_next(ls); /* skip break */ - label = luaS_new(ls->L, "break"); - } - g = newlabelentry(ls, &ls->dyd->gt, label, line, pc); - findlabel(ls, g); /* close it if label already defined */ -} - - -/* check for repeated labels on the same block */ -static void checkrepeated (FuncState *fs, Labellist *ll, TString *label) { - int i; - for (i = fs->bl->firstlabel; i < ll->n; i++) { - if (eqstr(label, ll->arr[i].name)) { - const char *msg = luaO_pushfstring(fs->ls->L, - "label '%s' already defined on line %d", - getstr(label), ll->arr[i].line); - semerror(fs->ls, msg); - } - } -} - - -/* skip no-op statements */ -static void skipnoopstat (LexState *ls) { - while (ls->t.token == ';' || ls->t.token == TK_DBCOLON) - statement(ls); -} - - -static void labelstat (LexState *ls, TString *label, int line) { - /* label -> '::' NAME '::' */ - FuncState *fs = ls->fs; - Labellist *ll = &ls->dyd->label; - int l; /* index of new label being created */ - checkrepeated(fs, ll, label); /* check for repeated labels */ - checknext(ls, TK_DBCOLON); /* skip double colon */ - /* create new entry for this label */ - l = newlabelentry(ls, ll, label, line, luaK_getlabel(fs)); - skipnoopstat(ls); /* skip other no-op statements */ - if (block_follow(ls, 0)) { /* label is last no-op statement in the block? */ - /* assume that locals are already out of scope */ - ll->arr[l].nactvar = fs->bl->nactvar; - } - findgotos(ls, &ll->arr[l]); -} - - -static void whilestat (LexState *ls, int line) { - /* whilestat -> WHILE cond DO block END */ - FuncState *fs = ls->fs; - int whileinit; - int condexit; - BlockCnt bl; - luaX_next(ls); /* skip WHILE */ - whileinit = luaK_getlabel(fs); - condexit = cond(ls); - enterblock(fs, &bl, 1); - checknext(ls, TK_DO); - block(ls); - luaK_jumpto(fs, whileinit); - check_match(ls, TK_END, TK_WHILE, line); - leaveblock(fs); - luaK_patchtohere(fs, condexit); /* false conditions finish the loop */ -} - - -static void repeatstat (LexState *ls, int line) { - /* repeatstat -> REPEAT block UNTIL cond */ - int condexit; - FuncState *fs = ls->fs; - int repeat_init = luaK_getlabel(fs); - BlockCnt bl1, bl2; - enterblock(fs, &bl1, 1); /* loop block */ - enterblock(fs, &bl2, 0); /* scope block */ - luaX_next(ls); /* skip REPEAT */ - statlist(ls); - check_match(ls, TK_UNTIL, TK_REPEAT, line); - condexit = cond(ls); /* read condition (inside scope block) */ - if (bl2.upval) /* upvalues? */ - luaK_patchclose(fs, condexit, bl2.nactvar); - leaveblock(fs); /* finish scope */ - luaK_patchlist(fs, condexit, repeat_init); /* close the loop */ - leaveblock(fs); /* finish loop */ -} - - -static int exp1 (LexState *ls) { - expdesc e; - int reg; - expr(ls, &e); - luaK_exp2nextreg(ls->fs, &e); - lua_assert(e.k == VNONRELOC); - reg = e.u.info; - return reg; -} - - -static void forbody (LexState *ls, int base, int line, int nvars, int isnum) { - /* forbody -> DO block */ - BlockCnt bl; - FuncState *fs = ls->fs; - int prep, endfor; - adjustlocalvars(ls, 3); /* control variables */ - checknext(ls, TK_DO); - prep = isnum ? luaK_codeAsBx(fs, OP_FORPREP, base, NO_JUMP) : luaK_jump(fs); - enterblock(fs, &bl, 0); /* scope for declared variables */ - adjustlocalvars(ls, nvars); - luaK_reserveregs(fs, nvars); - block(ls); - leaveblock(fs); /* end of scope for declared variables */ - luaK_patchtohere(fs, prep); - if (isnum) /* numeric for? */ - endfor = luaK_codeAsBx(fs, OP_FORLOOP, base, NO_JUMP); - else { /* generic for */ - luaK_codeABC(fs, OP_TFORCALL, base, 0, nvars); - luaK_fixline(fs, line); - endfor = luaK_codeAsBx(fs, OP_TFORLOOP, base + 2, NO_JUMP); - } - luaK_patchlist(fs, endfor, prep + 1); - luaK_fixline(fs, line); -} - - -static void fornum (LexState *ls, TString *varname, int line) { - /* fornum -> NAME = exp1,exp1[,exp1] forbody */ - FuncState *fs = ls->fs; - int base = fs->freereg; - new_localvarliteral(ls, "(for index)"); - new_localvarliteral(ls, "(for limit)"); - new_localvarliteral(ls, "(for step)"); - new_localvar(ls, varname); - checknext(ls, '='); - exp1(ls); /* initial value */ - checknext(ls, ','); - exp1(ls); /* limit */ - if (testnext(ls, ',')) - exp1(ls); /* optional step */ - else { /* default step = 1 */ - luaK_codek(fs, fs->freereg, luaK_intK(fs, 1)); - luaK_reserveregs(fs, 1); - } - forbody(ls, base, line, 1, 1); -} - - -static void forlist (LexState *ls, TString *indexname) { - /* forlist -> NAME {,NAME} IN explist forbody */ - FuncState *fs = ls->fs; - expdesc e; - int nvars = 4; /* gen, state, control, plus at least one declared var */ - int line; - int base = fs->freereg; - /* create control variables */ - new_localvarliteral(ls, "(for generator)"); - new_localvarliteral(ls, "(for state)"); - new_localvarliteral(ls, "(for control)"); - /* create declared variables */ - new_localvar(ls, indexname); - while (testnext(ls, ',')) { - new_localvar(ls, str_checkname(ls)); - nvars++; - } - checknext(ls, TK_IN); - line = ls->linenumber; - adjust_assign(ls, 3, explist(ls, &e), &e); - luaK_checkstack(fs, 3); /* extra space to call generator */ - forbody(ls, base, line, nvars - 3, 0); -} - - -static void forstat (LexState *ls, int line) { - /* forstat -> FOR (fornum | forlist) END */ - FuncState *fs = ls->fs; - TString *varname; - BlockCnt bl; - enterblock(fs, &bl, 1); /* scope for loop and control variables */ - luaX_next(ls); /* skip 'for' */ - varname = str_checkname(ls); /* first variable name */ - switch (ls->t.token) { - case '=': fornum(ls, varname, line); break; - case ',': case TK_IN: forlist(ls, varname); break; - default: luaX_syntaxerror(ls, "'=' or 'in' expected"); - } - check_match(ls, TK_END, TK_FOR, line); - leaveblock(fs); /* loop scope ('break' jumps to this point) */ -} - - -static void test_then_block (LexState *ls, int *escapelist) { - /* test_then_block -> [IF | ELSEIF] cond THEN block */ - BlockCnt bl; - FuncState *fs = ls->fs; - expdesc v; - int jf; /* instruction to skip 'then' code (if condition is false) */ - luaX_next(ls); /* skip IF or ELSEIF */ - expr(ls, &v); /* read condition */ - checknext(ls, TK_THEN); - if (ls->t.token == TK_GOTO || ls->t.token == TK_BREAK) { - luaK_goiffalse(ls->fs, &v); /* will jump to label if condition is true */ - enterblock(fs, &bl, 0); /* must enter block before 'goto' */ - gotostat(ls, v.t); /* handle goto/break */ - skipnoopstat(ls); /* skip other no-op statements */ - if (block_follow(ls, 0)) { /* 'goto' is the entire block? */ - leaveblock(fs); - return; /* and that is it */ - } - else /* must skip over 'then' part if condition is false */ - jf = luaK_jump(fs); - } - else { /* regular case (not goto/break) */ - luaK_goiftrue(ls->fs, &v); /* skip over block if condition is false */ - enterblock(fs, &bl, 0); - jf = v.f; - } - statlist(ls); /* 'then' part */ - leaveblock(fs); - if (ls->t.token == TK_ELSE || - ls->t.token == TK_ELSEIF) /* followed by 'else'/'elseif'? */ - luaK_concat(fs, escapelist, luaK_jump(fs)); /* must jump over it */ - luaK_patchtohere(fs, jf); -} - - -static void ifstat (LexState *ls, int line) { - /* ifstat -> IF cond THEN block {ELSEIF cond THEN block} [ELSE block] END */ - FuncState *fs = ls->fs; - int escapelist = NO_JUMP; /* exit list for finished parts */ - test_then_block(ls, &escapelist); /* IF cond THEN block */ - while (ls->t.token == TK_ELSEIF) - test_then_block(ls, &escapelist); /* ELSEIF cond THEN block */ - if (testnext(ls, TK_ELSE)) - block(ls); /* 'else' part */ - check_match(ls, TK_END, TK_IF, line); - luaK_patchtohere(fs, escapelist); /* patch escape list to 'if' end */ -} - - -static void localfunc (LexState *ls) { - expdesc b; - FuncState *fs = ls->fs; - new_localvar(ls, str_checkname(ls)); /* new local variable */ - adjustlocalvars(ls, 1); /* enter its scope */ - body(ls, &b, 0, ls->linenumber); /* function created in next register */ - /* debug information will only see the variable after this point! */ - getlocvar(fs, b.u.info)->startpc = fs->pc; -} - - -static void localstat (LexState *ls) { - /* stat -> LOCAL NAME {',' NAME} ['=' explist] */ - int nvars = 0; - int nexps; - expdesc e; - do { - new_localvar(ls, str_checkname(ls)); - nvars++; - } while (testnext(ls, ',')); - if (testnext(ls, '=')) - nexps = explist(ls, &e); - else { - e.k = VVOID; - nexps = 0; - } - adjust_assign(ls, nvars, nexps, &e); - adjustlocalvars(ls, nvars); -} - - -static int funcname (LexState *ls, expdesc *v) { - /* funcname -> NAME {fieldsel} [':' NAME] */ - int ismethod = 0; - singlevar(ls, v); - while (ls->t.token == '.') - fieldsel(ls, v); - if (ls->t.token == ':') { - ismethod = 1; - fieldsel(ls, v); - } - return ismethod; -} - - -static void funcstat (LexState *ls, int line) { - /* funcstat -> FUNCTION funcname body */ - int ismethod; - expdesc v, b; - luaX_next(ls); /* skip FUNCTION */ - ismethod = funcname(ls, &v); - body(ls, &b, ismethod, line); - luaK_storevar(ls->fs, &v, &b); - luaK_fixline(ls->fs, line); /* definition "happens" in the first line */ -} - - -static void exprstat (LexState *ls) { - /* stat -> func | assignment */ - FuncState *fs = ls->fs; - struct LHS_assign v; - suffixedexp(ls, &v.v); - if (ls->t.token == '=' || ls->t.token == ',') { /* stat -> assignment ? */ - v.prev = NULL; - assignment(ls, &v, 1); - } - else { /* stat -> func */ - check_condition(ls, v.v.k == VCALL, "syntax error"); - SETARG_C(getinstruction(fs, &v.v), 1); /* call statement uses no results */ - } -} - - -static void retstat (LexState *ls) { - /* stat -> RETURN [explist] [';'] */ - FuncState *fs = ls->fs; - expdesc e; - int first, nret; /* registers with returned values */ - if (block_follow(ls, 1) || ls->t.token == ';') - first = nret = 0; /* return no values */ - else { - nret = explist(ls, &e); /* optional return values */ - if (hasmultret(e.k)) { - luaK_setmultret(fs, &e); - if (e.k == VCALL && nret == 1) { /* tail call? */ - SET_OPCODE(getinstruction(fs,&e), OP_TAILCALL); - lua_assert(GETARG_A(getinstruction(fs,&e)) == fs->nactvar); - } - first = fs->nactvar; - nret = LUA_MULTRET; /* return all values */ - } - else { - if (nret == 1) /* only one single value? */ - first = luaK_exp2anyreg(fs, &e); - else { - luaK_exp2nextreg(fs, &e); /* values must go to the stack */ - first = fs->nactvar; /* return all active values */ - lua_assert(nret == fs->freereg - first); - } - } - } - luaK_ret(fs, first, nret); - testnext(ls, ';'); /* skip optional semicolon */ -} - - -static void statement (LexState *ls) { - int line = ls->linenumber; /* may be needed for error messages */ - enterlevel(ls); - switch (ls->t.token) { - case ';': { /* stat -> ';' (empty statement) */ - luaX_next(ls); /* skip ';' */ - break; - } - case TK_IF: { /* stat -> ifstat */ - ifstat(ls, line); - break; - } - case TK_WHILE: { /* stat -> whilestat */ - whilestat(ls, line); - break; - } - case TK_DO: { /* stat -> DO block END */ - luaX_next(ls); /* skip DO */ - block(ls); - check_match(ls, TK_END, TK_DO, line); - break; - } - case TK_FOR: { /* stat -> forstat */ - forstat(ls, line); - break; - } - case TK_REPEAT: { /* stat -> repeatstat */ - repeatstat(ls, line); - break; - } - case TK_FUNCTION: { /* stat -> funcstat */ - funcstat(ls, line); - break; - } - case TK_LOCAL: { /* stat -> localstat */ - luaX_next(ls); /* skip LOCAL */ - if (testnext(ls, TK_FUNCTION)) /* local function? */ - localfunc(ls); - else - localstat(ls); - break; - } - case TK_DBCOLON: { /* stat -> label */ - luaX_next(ls); /* skip double colon */ - labelstat(ls, str_checkname(ls), line); - break; - } - case TK_RETURN: { /* stat -> retstat */ - luaX_next(ls); /* skip RETURN */ - retstat(ls); - break; - } - case TK_BREAK: /* stat -> breakstat */ - case TK_GOTO: { /* stat -> 'goto' NAME */ - gotostat(ls, luaK_jump(ls->fs)); - break; - } - default: { /* stat -> func | assignment */ - exprstat(ls); - break; - } - } - lua_assert(ls->fs->f->maxstacksize >= ls->fs->freereg && - ls->fs->freereg >= ls->fs->nactvar); - ls->fs->freereg = ls->fs->nactvar; /* free registers */ - leavelevel(ls); -} - -/* }====================================================================== */ - - -/* -** compiles the main function, which is a regular vararg function with an -** upvalue named LUA_ENV -*/ -static void mainfunc (LexState *ls, FuncState *fs) { - BlockCnt bl; - expdesc v; - open_func(ls, fs, &bl); - fs->f->is_vararg = 1; /* main function is always declared vararg */ - init_exp(&v, VLOCAL, 0); /* create and... */ - newupvalue(fs, ls->envn, &v); /* ...set environment upvalue */ - luaX_next(ls); /* read first token */ - statlist(ls); /* parse main body */ - check(ls, TK_EOS); - close_func(ls); -} - - -LClosure *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff, - Dyndata *dyd, const char *name, int firstchar) { - LexState lexstate; - FuncState funcstate; - LClosure *cl = luaF_newLclosure(L, 1); /* create main closure */ - setclLvalue(L, L->top, cl); /* anchor it (to avoid being collected) */ - luaD_inctop(L); - lexstate.h = luaH_new(L); /* create table for scanner */ - sethvalue(L, L->top, lexstate.h); /* anchor it */ - luaD_inctop(L); - funcstate.f = cl->p = luaF_newproto(L); - funcstate.f->source = luaS_new(L, name); /* create and anchor TString */ - lua_assert(iswhite(funcstate.f)); /* do not need barrier here */ - lexstate.buff = buff; - lexstate.dyd = dyd; - dyd->actvar.n = dyd->gt.n = dyd->label.n = 0; - luaX_setinput(L, &lexstate, z, funcstate.f->source, firstchar); - mainfunc(&lexstate, &funcstate); - lua_assert(!funcstate.prev && funcstate.nups == 1 && !lexstate.fs); - /* all scopes should be correctly finished */ - lua_assert(dyd->actvar.n == 0 && dyd->gt.n == 0 && dyd->label.n == 0); - L->top--; /* remove scanner's table */ - return cl; /* closure is on the stack, too */ -} - diff --git a/deps/rcheevos/test/lua/src/lparser.h b/deps/rcheevos/test/lua/src/lparser.h deleted file mode 100644 index 02e9b03aeb..0000000000 --- a/deps/rcheevos/test/lua/src/lparser.h +++ /dev/null @@ -1,133 +0,0 @@ -/* -** $Id: lparser.h,v 1.76 2015/12/30 18:16:13 roberto Exp $ -** Lua Parser -** See Copyright Notice in lua.h -*/ - -#ifndef lparser_h -#define lparser_h - -#include "llimits.h" -#include "lobject.h" -#include "lzio.h" - - -/* -** Expression and variable descriptor. -** Code generation for variables and expressions can be delayed to allow -** optimizations; An 'expdesc' structure describes a potentially-delayed -** variable/expression. It has a description of its "main" value plus a -** list of conditional jumps that can also produce its value (generated -** by short-circuit operators 'and'/'or'). -*/ - -/* kinds of variables/expressions */ -typedef enum { - VVOID, /* when 'expdesc' describes the last expression a list, - this kind means an empty list (so, no expression) */ - VNIL, /* constant nil */ - VTRUE, /* constant true */ - VFALSE, /* constant false */ - VK, /* constant in 'k'; info = index of constant in 'k' */ - VKFLT, /* floating constant; nval = numerical float value */ - VKINT, /* integer constant; nval = numerical integer value */ - VNONRELOC, /* expression has its value in a fixed register; - info = result register */ - VLOCAL, /* local variable; info = local register */ - VUPVAL, /* upvalue variable; info = index of upvalue in 'upvalues' */ - VINDEXED, /* indexed variable; - ind.vt = whether 't' is register or upvalue; - ind.t = table register or upvalue; - ind.idx = key's R/K index */ - VJMP, /* expression is a test/comparison; - info = pc of corresponding jump instruction */ - VRELOCABLE, /* expression can put result in any register; - info = instruction pc */ - VCALL, /* expression is a function call; info = instruction pc */ - VVARARG /* vararg expression; info = instruction pc */ -} expkind; - - -#define vkisvar(k) (VLOCAL <= (k) && (k) <= VINDEXED) -#define vkisinreg(k) ((k) == VNONRELOC || (k) == VLOCAL) - -typedef struct expdesc { - expkind k; - union { - lua_Integer ival; /* for VKINT */ - lua_Number nval; /* for VKFLT */ - int info; /* for generic use */ - struct { /* for indexed variables (VINDEXED) */ - short idx; /* index (R/K) */ - lu_byte t; /* table (register or upvalue) */ - lu_byte vt; /* whether 't' is register (VLOCAL) or upvalue (VUPVAL) */ - } ind; - } u; - int t; /* patch list of 'exit when true' */ - int f; /* patch list of 'exit when false' */ -} expdesc; - - -/* description of active local variable */ -typedef struct Vardesc { - short idx; /* variable index in stack */ -} Vardesc; - - -/* description of pending goto statements and label statements */ -typedef struct Labeldesc { - TString *name; /* label identifier */ - int pc; /* position in code */ - int line; /* line where it appeared */ - lu_byte nactvar; /* local level where it appears in current block */ -} Labeldesc; - - -/* list of labels or gotos */ -typedef struct Labellist { - Labeldesc *arr; /* array */ - int n; /* number of entries in use */ - int size; /* array size */ -} Labellist; - - -/* dynamic structures used by the parser */ -typedef struct Dyndata { - struct { /* list of active local variables */ - Vardesc *arr; - int n; - int size; - } actvar; - Labellist gt; /* list of pending gotos */ - Labellist label; /* list of active labels */ -} Dyndata; - - -/* control of blocks */ -struct BlockCnt; /* defined in lparser.c */ - - -/* state needed to generate code for a given function */ -typedef struct FuncState { - Proto *f; /* current function header */ - struct FuncState *prev; /* enclosing function */ - struct LexState *ls; /* lexical state */ - struct BlockCnt *bl; /* chain of current blocks */ - int pc; /* next position to code (equivalent to 'ncode') */ - int lasttarget; /* 'label' of last 'jump label' */ - int jpc; /* list of pending jumps to 'pc' */ - int nk; /* number of elements in 'k' */ - int np; /* number of elements in 'p' */ - int firstlocal; /* index of first local var (in Dyndata array) */ - short nlocvars; /* number of elements in 'f->locvars' */ - lu_byte nactvar; /* number of active local variables */ - lu_byte nups; /* number of upvalues */ - lu_byte freereg; /* first free register */ -} FuncState; - - -LUAI_FUNC LClosure *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff, - Dyndata *dyd, const char *name, int firstchar); - - -#endif diff --git a/deps/rcheevos/test/lua/src/lprefix.h b/deps/rcheevos/test/lua/src/lprefix.h deleted file mode 100644 index 02daa837f5..0000000000 --- a/deps/rcheevos/test/lua/src/lprefix.h +++ /dev/null @@ -1,45 +0,0 @@ -/* -** $Id: lprefix.h,v 1.2 2014/12/29 16:54:13 roberto Exp $ -** Definitions for Lua code that must come before any other header file -** See Copyright Notice in lua.h -*/ - -#ifndef lprefix_h -#define lprefix_h - - -/* -** Allows POSIX/XSI stuff -*/ -#if !defined(LUA_USE_C89) /* { */ - -#if !defined(_XOPEN_SOURCE) -#define _XOPEN_SOURCE 600 -#elif _XOPEN_SOURCE == 0 -#undef _XOPEN_SOURCE /* use -D_XOPEN_SOURCE=0 to undefine it */ -#endif - -/* -** Allows manipulation of large files in gcc and some other compilers -*/ -#if !defined(LUA_32BITS) && !defined(_FILE_OFFSET_BITS) -#define _LARGEFILE_SOURCE 1 -#define _FILE_OFFSET_BITS 64 -#endif - -#endif /* } */ - - -/* -** Windows stuff -*/ -#if defined(_WIN32) /* { */ - -#if !defined(_CRT_SECURE_NO_WARNINGS) -#define _CRT_SECURE_NO_WARNINGS /* avoid warnings about ISO C functions */ -#endif - -#endif /* } */ - -#endif - diff --git a/deps/rcheevos/test/lua/src/lstate.c b/deps/rcheevos/test/lua/src/lstate.c deleted file mode 100644 index 9e4c8f0616..0000000000 --- a/deps/rcheevos/test/lua/src/lstate.c +++ /dev/null @@ -1,347 +0,0 @@ -/* -** $Id: lstate.c,v 2.133 2015/11/13 12:16:51 roberto Exp $ -** Global State -** See Copyright Notice in lua.h -*/ - -#define lstate_c -#define LUA_CORE - -#include "lprefix.h" - - -#include -#include - -#include "lua.h" - -#include "lapi.h" -#include "ldebug.h" -#include "ldo.h" -#include "lfunc.h" -#include "lgc.h" -#include "llex.h" -#include "lmem.h" -#include "lstate.h" -#include "lstring.h" -#include "ltable.h" -#include "ltm.h" - - -#if !defined(LUAI_GCPAUSE) -#define LUAI_GCPAUSE 200 /* 200% */ -#endif - -#if !defined(LUAI_GCMUL) -#define LUAI_GCMUL 200 /* GC runs 'twice the speed' of memory allocation */ -#endif - - -/* -** a macro to help the creation of a unique random seed when a state is -** created; the seed is used to randomize hashes. -*/ -#if !defined(luai_makeseed) -#include -#define luai_makeseed() cast(unsigned int, time(NULL)) -#endif - - - -/* -** thread state + extra space -*/ -typedef struct LX { - lu_byte extrc_[LUA_EXTRASPACE]; - lua_State l; -} LX; - - -/* -** Main thread combines a thread state and the global state -*/ -typedef struct LG { - LX l; - global_State g; -} LG; - - - -#define fromstate(L) (cast(LX *, cast(lu_byte *, (L)) - offsetof(LX, l))) - - -/* -** Compute an initial seed as random as possible. Rely on Address Space -** Layout Randomization (if present) to increase randomness.. -*/ -#define addbuff(b,p,e) \ - { size_t t = cast(size_t, e); \ - memcpy(b + p, &t, sizeof(t)); p += sizeof(t); } - -static unsigned int makeseed (lua_State *L) { - char buff[4 * sizeof(size_t)]; - unsigned int h = luai_makeseed(); - int p = 0; - addbuff(buff, p, L); /* heap variable */ - addbuff(buff, p, &h); /* local variable */ - addbuff(buff, p, luaO_nilobject); /* global variable */ - addbuff(buff, p, &lua_newstate); /* public function */ - lua_assert(p == sizeof(buff)); - return luaS_hash(buff, p, h); -} - - -/* -** set GCdebt to a new value keeping the value (totalbytes + GCdebt) -** invariant (and avoiding underflows in 'totalbytes') -*/ -void luaE_setdebt (global_State *g, l_mem debt) { - l_mem tb = gettotalbytes(g); - lua_assert(tb > 0); - if (debt < tb - MAX_LMEM) - debt = tb - MAX_LMEM; /* will make 'totalbytes == MAX_LMEM' */ - g->totalbytes = tb - debt; - g->GCdebt = debt; -} - - -CallInfo *luaE_extendCI (lua_State *L) { - CallInfo *ci = luaM_new(L, CallInfo); - lua_assert(L->ci->next == NULL); - L->ci->next = ci; - ci->previous = L->ci; - ci->next = NULL; - L->nci++; - return ci; -} - - -/* -** free all CallInfo structures not in use by a thread -*/ -void luaE_freeCI (lua_State *L) { - CallInfo *ci = L->ci; - CallInfo *next = ci->next; - ci->next = NULL; - while ((ci = next) != NULL) { - next = ci->next; - luaM_free(L, ci); - L->nci--; - } -} - - -/* -** free half of the CallInfo structures not in use by a thread -*/ -void luaE_shrinkCI (lua_State *L) { - CallInfo *ci = L->ci; - CallInfo *next2; /* next's next */ - /* while there are two nexts */ - while (ci->next != NULL && (next2 = ci->next->next) != NULL) { - luaM_free(L, ci->next); /* free next */ - L->nci--; - ci->next = next2; /* remove 'next' from the list */ - next2->previous = ci; - ci = next2; /* keep next's next */ - } -} - - -static void stack_init (lua_State *L1, lua_State *L) { - int i; CallInfo *ci; - /* initialize stack array */ - L1->stack = luaM_newvector(L, BASIC_STACK_SIZE, TValue); - L1->stacksize = BASIC_STACK_SIZE; - for (i = 0; i < BASIC_STACK_SIZE; i++) - setnilvalue(L1->stack + i); /* erase new stack */ - L1->top = L1->stack; - L1->stack_last = L1->stack + L1->stacksize - EXTRC_STACK; - /* initialize first ci */ - ci = &L1->base_ci; - ci->next = ci->previous = NULL; - ci->callstatus = 0; - ci->func = L1->top; - setnilvalue(L1->top++); /* 'function' entry for this 'ci' */ - ci->top = L1->top + LUA_MINSTACK; - L1->ci = ci; -} - - -static void freestack (lua_State *L) { - if (L->stack == NULL) - return; /* stack not completely built yet */ - L->ci = &L->base_ci; /* free the entire 'ci' list */ - luaE_freeCI(L); - lua_assert(L->nci == 0); - luaM_freearray(L, L->stack, L->stacksize); /* free stack array */ -} - - -/* -** Create registry table and its predefined values -*/ -static void init_registry (lua_State *L, global_State *g) { - TValue temp; - /* create registry */ - Table *registry = luaH_new(L); - sethvalue(L, &g->l_registry, registry); - luaH_resize(L, registry, LUA_RIDX_LAST, 0); - /* registry[LUA_RIDX_MAINTHREAD] = L */ - setthvalue(L, &temp, L); /* temp = L */ - luaH_setint(L, registry, LUA_RIDX_MAINTHREAD, &temp); - /* registry[LUA_RIDX_GLOBALS] = table of globals */ - sethvalue(L, &temp, luaH_new(L)); /* temp = new table (global table) */ - luaH_setint(L, registry, LUA_RIDX_GLOBALS, &temp); -} - - -/* -** open parts of the state that may cause memory-allocation errors. -** ('g->version' != NULL flags that the state was completely build) -*/ -static void f_luaopen (lua_State *L, void *ud) { - global_State *g = G(L); - UNUSED(ud); - stack_init(L, L); /* init stack */ - init_registry(L, g); - luaS_init(L); - luaT_init(L); - luaX_init(L); - g->gcrunning = 1; /* allow gc */ - g->version = lua_version(NULL); - luai_userstateopen(L); -} - - -/* -** preinitialize a thread with consistent values without allocating -** any memory (to avoid errors) -*/ -static void preinit_thread (lua_State *L, global_State *g) { - G(L) = g; - L->stack = NULL; - L->ci = NULL; - L->nci = 0; - L->stacksize = 0; - L->twups = L; /* thread has no upvalues */ - L->errorJmp = NULL; - L->nCcalls = 0; - L->hook = NULL; - L->hookmask = 0; - L->basehookcount = 0; - L->allowhook = 1; - resethookcount(L); - L->openupval = NULL; - L->nny = 1; - L->status = LUA_OK; - L->errfunc = 0; -} - - -static void close_state (lua_State *L) { - global_State *g = G(L); - luaF_close(L, L->stack); /* close all upvalues for this thread */ - luaC_freeallobjects(L); /* collect all objects */ - if (g->version) /* closing a fully built state? */ - luai_userstateclose(L); - luaM_freearray(L, G(L)->strt.hash, G(L)->strt.size); - freestack(L); - lua_assert(gettotalbytes(g) == sizeof(LG)); - (*g->frealloc)(g->ud, fromstate(L), sizeof(LG), 0); /* free main block */ -} - - -LUA_API lua_State *lua_newthread (lua_State *L) { - global_State *g = G(L); - lua_State *L1; - lua_lock(L); - luaC_checkGC(L); - /* create new thread */ - L1 = &cast(LX *, luaM_newobject(L, LUA_TTHREAD, sizeof(LX)))->l; - L1->marked = luaC_white(g); - L1->tt = LUA_TTHREAD; - /* link it on list 'allgc' */ - L1->next = g->allgc; - g->allgc = obj2gco(L1); - /* anchor it on L stack */ - setthvalue(L, L->top, L1); - api_incr_top(L); - preinit_thread(L1, g); - L1->hookmask = L->hookmask; - L1->basehookcount = L->basehookcount; - L1->hook = L->hook; - resethookcount(L1); - /* initialize L1 extra space */ - memcpy(lua_getextraspace(L1), lua_getextraspace(g->mainthread), - LUA_EXTRASPACE); - luai_userstatethread(L, L1); - stack_init(L1, L); /* init stack */ - lua_unlock(L); - return L1; -} - - -void luaE_freethread (lua_State *L, lua_State *L1) { - LX *l = fromstate(L1); - luaF_close(L1, L1->stack); /* close all upvalues for this thread */ - lua_assert(L1->openupval == NULL); - luai_userstatefree(L, L1); - freestack(L1); - luaM_free(L, l); -} - - -LUA_API lua_State *lua_newstate (lua_Alloc f, void *ud) { - int i; - lua_State *L; - global_State *g; - LG *l = cast(LG *, (*f)(ud, NULL, LUA_TTHREAD, sizeof(LG))); - if (l == NULL) return NULL; - L = &l->l.l; - g = &l->g; - L->next = NULL; - L->tt = LUA_TTHREAD; - g->currentwhite = bitmask(WHITE0BIT); - L->marked = luaC_white(g); - preinit_thread(L, g); - g->frealloc = f; - g->ud = ud; - g->mainthread = L; - g->seed = makeseed(L); - g->gcrunning = 0; /* no GC while building state */ - g->GCestimate = 0; - g->strt.size = g->strt.nuse = 0; - g->strt.hash = NULL; - setnilvalue(&g->l_registry); - g->panic = NULL; - g->version = NULL; - g->gcstate = GCSpause; - g->gckind = KGC_NORMAL; - g->allgc = g->finobj = g->tobefnz = g->fixedgc = NULL; - g->sweepgc = NULL; - g->gray = g->grayagain = NULL; - g->weak = g->ephemeron = g->allweak = NULL; - g->twups = NULL; - g->totalbytes = sizeof(LG); - g->GCdebt = 0; - g->gcfinnum = 0; - g->gcpause = LUAI_GCPAUSE; - g->gcstepmul = LUAI_GCMUL; - for (i=0; i < LUA_NUMTAGS; i++) g->mt[i] = NULL; - if (luaD_rawrunprotected(L, f_luaopen, NULL) != LUA_OK) { - /* memory allocation error: free partial state */ - close_state(L); - L = NULL; - } - return L; -} - - -LUA_API void lua_close (lua_State *L) { - L = G(L)->mainthread; /* only the main thread can be closed */ - lua_lock(L); - close_state(L); -} - - diff --git a/deps/rcheevos/test/lua/src/lstate.h b/deps/rcheevos/test/lua/src/lstate.h deleted file mode 100644 index ed621c4dfa..0000000000 --- a/deps/rcheevos/test/lua/src/lstate.h +++ /dev/null @@ -1,235 +0,0 @@ -/* -** $Id: lstate.h,v 2.133 2016/12/22 13:08:50 roberto Exp $ -** Global State -** See Copyright Notice in lua.h -*/ - -#ifndef lstate_h -#define lstate_h - -#include "lua.h" - -#include "lobject.h" -#include "ltm.h" -#include "lzio.h" - - -/* - -** Some notes about garbage-collected objects: All objects in Lua must -** be kept somehow accessible until being freed, so all objects always -** belong to one (and only one) of these lists, using field 'next' of -** the 'CommonHeader' for the link: -** -** 'allgc': all objects not marked for finalization; -** 'finobj': all objects marked for finalization; -** 'tobefnz': all objects ready to be finalized; -** 'fixedgc': all objects that are not to be collected (currently -** only small strings, such as reserved words). - -*/ - - -struct lua_longjmp; /* defined in ldo.c */ - - -/* -** Atomic type (relative to signals) to better ensure that 'lua_sethook' -** is thread safe -*/ -#if !defined(l_signalT) -#include -#define l_signalT sig_atomic_t -#endif - - -/* extra stack space to handle TM calls and some other extras */ -#define EXTRC_STACK 5 - - -#define BASIC_STACK_SIZE (2*LUA_MINSTACK) - - -/* kinds of Garbage Collection */ -#define KGC_NORMAL 0 -#define KGC_EMERGENCY 1 /* gc was forced by an allocation failure */ - - -typedef struct stringtable { - TString **hash; - int nuse; /* number of elements */ - int size; -} stringtable; - - -/* -** Information about a call. -** When a thread yields, 'func' is adjusted to pretend that the -** top function has only the yielded values in its stack; in that -** case, the actual 'func' value is saved in field 'extra'. -** When a function calls another with a continuation, 'extra' keeps -** the function index so that, in case of errors, the continuation -** function can be called with the correct top. -*/ -typedef struct CallInfo { - StkId func; /* function index in the stack */ - StkId top; /* top for this function */ - struct CallInfo *previous, *next; /* dynamic call link */ - union { - struct { /* only for Lua functions */ - StkId base; /* base for this function */ - const Instruction *savedpc; - } l; - struct { /* only for C functions */ - lua_KFunction k; /* continuation in case of yields */ - ptrdiff_t old_errfunc; - lua_KContext ctx; /* context info. in case of yields */ - } c; - } u; - ptrdiff_t extra; - short nresults; /* expected number of results from this function */ - unsigned short callstatus; -} CallInfo; - - -/* -** Bits in CallInfo status -*/ -#define CIST_OAH (1<<0) /* original value of 'allowhook' */ -#define CIST_LUA (1<<1) /* call is running a Lua function */ -#define CIST_HOOKED (1<<2) /* call is running a debug hook */ -#define CIST_FRESH (1<<3) /* call is running on a fresh invocation - of luaV_execute */ -#define CIST_YPCALL (1<<4) /* call is a yieldable protected call */ -#define CIST_TAIL (1<<5) /* call was tail called */ -#define CIST_HOOKYIELD (1<<6) /* last hook called yielded */ -#define CIST_LEQ (1<<7) /* using __lt for __le */ -#define CIST_FIN (1<<8) /* call is running a finalizer */ - -#define isLua(ci) ((ci)->callstatus & CIST_LUA) - -/* assume that CIST_OAH has offset 0 and that 'v' is strictly 0/1 */ -#define setoah(st,v) ((st) = ((st) & ~CIST_OAH) | (v)) -#define getoah(st) ((st) & CIST_OAH) - - -/* -** 'global state', shared by all threads of this state -*/ -typedef struct global_State { - lua_Alloc frealloc; /* function to reallocate memory */ - void *ud; /* auxiliary data to 'frealloc' */ - l_mem totalbytes; /* number of bytes currently allocated - GCdebt */ - l_mem GCdebt; /* bytes allocated not yet compensated by the collector */ - lu_mem GCmemtrav; /* memory traversed by the GC */ - lu_mem GCestimate; /* an estimate of the non-garbage memory in use */ - stringtable strt; /* hash table for strings */ - TValue l_registry; - unsigned int seed; /* randomized seed for hashes */ - lu_byte currentwhite; - lu_byte gcstate; /* state of garbage collector */ - lu_byte gckind; /* kind of GC running */ - lu_byte gcrunning; /* true if GC is running */ - GCObject *allgc; /* list of all collectable objects */ - GCObject **sweepgc; /* current position of sweep in list */ - GCObject *finobj; /* list of collectable objects with finalizers */ - GCObject *gray; /* list of gray objects */ - GCObject *grayagain; /* list of objects to be traversed atomically */ - GCObject *weak; /* list of tables with weak values */ - GCObject *ephemeron; /* list of ephemeron tables (weak keys) */ - GCObject *allweak; /* list of all-weak tables */ - GCObject *tobefnz; /* list of userdata to be GC */ - GCObject *fixedgc; /* list of objects not to be collected */ - struct lua_State *twups; /* list of threads with open upvalues */ - unsigned int gcfinnum; /* number of finalizers to call in each GC step */ - int gcpause; /* size of pause between successive GCs */ - int gcstepmul; /* GC 'granularity' */ - lua_CFunction panic; /* to be called in unprotected errors */ - struct lua_State *mainthread; - const lua_Number *version; /* pointer to version number */ - TString *memerrmsg; /* memory-error message */ - TString *tmname[TM_N]; /* array with tag-method names */ - struct Table *mt[LUA_NUMTAGS]; /* metatables for basic types */ - TString *strcache[STRCACHE_N][STRCACHE_M]; /* cache for strings in API */ -} global_State; - - -/* -** 'per thread' state -*/ -struct lua_State { - CommonHeader; - unsigned short nci; /* number of items in 'ci' list */ - lu_byte status; - StkId top; /* first free slot in the stack */ - global_State *l_G; - CallInfo *ci; /* call info for current function */ - const Instruction *oldpc; /* last pc traced */ - StkId stack_last; /* last free slot in the stack */ - StkId stack; /* stack base */ - UpVal *openupval; /* list of open upvalues in this stack */ - GCObject *gclist; - struct lua_State *twups; /* list of threads with open upvalues */ - struct lua_longjmp *errorJmp; /* current error recover point */ - CallInfo base_ci; /* CallInfo for first level (C calling Lua) */ - volatile lua_Hook hook; - ptrdiff_t errfunc; /* current error handling function (stack index) */ - int stacksize; - int basehookcount; - int hookcount; - unsigned short nny; /* number of non-yieldable calls in stack */ - unsigned short nCcalls; /* number of nested C calls */ - l_signalT hookmask; - lu_byte allowhook; -}; - - -#define G(L) (L->l_G) - - -/* -** Union of all collectable objects (only for conversions) -*/ -union GCUnion { - GCObject gc; /* common header */ - struct TString ts; - struct Udata u; - union Closure cl; - struct Table h; - struct Proto p; - struct lua_State th; /* thread */ -}; - - -#define cast_u(o) cast(union GCUnion *, (o)) - -/* macros to convert a GCObject into a specific value */ -#define gco2ts(o) \ - check_exp(novariant((o)->tt) == LUA_TSTRING, &((cast_u(o))->ts)) -#define gco2u(o) check_exp((o)->tt == LUA_TUSERDATA, &((cast_u(o))->u)) -#define gco2lcl(o) check_exp((o)->tt == LUA_TLCL, &((cast_u(o))->cl.l)) -#define gco2ccl(o) check_exp((o)->tt == LUA_TCCL, &((cast_u(o))->cl.c)) -#define gco2cl(o) \ - check_exp(novariant((o)->tt) == LUA_TFUNCTION, &((cast_u(o))->cl)) -#define gco2t(o) check_exp((o)->tt == LUA_TTABLE, &((cast_u(o))->h)) -#define gco2p(o) check_exp((o)->tt == LUA_TPROTO, &((cast_u(o))->p)) -#define gco2th(o) check_exp((o)->tt == LUA_TTHREAD, &((cast_u(o))->th)) - - -/* macro to convert a Lua object into a GCObject */ -#define obj2gco(v) \ - check_exp(novariant((v)->tt) < LUA_TDEADKEY, (&(cast_u(v)->gc))) - - -/* actual number of total bytes allocated */ -#define gettotalbytes(g) cast(lu_mem, (g)->totalbytes + (g)->GCdebt) - -LUAI_FUNC void luaE_setdebt (global_State *g, l_mem debt); -LUAI_FUNC void luaE_freethread (lua_State *L, lua_State *L1); -LUAI_FUNC CallInfo *luaE_extendCI (lua_State *L); -LUAI_FUNC void luaE_freeCI (lua_State *L); -LUAI_FUNC void luaE_shrinkCI (lua_State *L); - - -#endif - diff --git a/deps/rcheevos/test/lua/src/lstring.c b/deps/rcheevos/test/lua/src/lstring.c deleted file mode 100644 index 9351766fd6..0000000000 --- a/deps/rcheevos/test/lua/src/lstring.c +++ /dev/null @@ -1,248 +0,0 @@ -/* -** $Id: lstring.c,v 2.56 2015/11/23 11:32:51 roberto Exp $ -** String table (keeps all strings handled by Lua) -** See Copyright Notice in lua.h -*/ - -#define lstring_c -#define LUA_CORE - -#include "lprefix.h" - - -#include - -#include "lua.h" - -#include "ldebug.h" -#include "ldo.h" -#include "lmem.h" -#include "lobject.h" -#include "lstate.h" -#include "lstring.h" - - -#define MEMERRMSG "not enough memory" - - -/* -** Lua will use at most ~(2^LUAI_HASHLIMIT) bytes from a string to -** compute its hash -*/ -#if !defined(LUAI_HASHLIMIT) -#define LUAI_HASHLIMIT 5 -#endif - - -/* -** equality for long strings -*/ -int luaS_eqlngstr (TString *a, TString *b) { - size_t len = a->u.lnglen; - lua_assert(a->tt == LUA_TLNGSTR && b->tt == LUA_TLNGSTR); - return (a == b) || /* same instance or... */ - ((len == b->u.lnglen) && /* equal length and ... */ - (memcmp(getstr(a), getstr(b), len) == 0)); /* equal contents */ -} - - -unsigned int luaS_hash (const char *str, size_t l, unsigned int seed) { - unsigned int h = seed ^ cast(unsigned int, l); - size_t step = (l >> LUAI_HASHLIMIT) + 1; - for (; l >= step; l -= step) - h ^= ((h<<5) + (h>>2) + cast_byte(str[l - 1])); - return h; -} - - -unsigned int luaS_hashlongstr (TString *ts) { - lua_assert(ts->tt == LUA_TLNGSTR); - if (ts->extra == 0) { /* no hash? */ - ts->hash = luaS_hash(getstr(ts), ts->u.lnglen, ts->hash); - ts->extra = 1; /* now it has its hash */ - } - return ts->hash; -} - - -/* -** resizes the string table -*/ -void luaS_resize (lua_State *L, int newsize) { - int i; - stringtable *tb = &G(L)->strt; - if (newsize > tb->size) { /* grow table if needed */ - luaM_reallocvector(L, tb->hash, tb->size, newsize, TString *); - for (i = tb->size; i < newsize; i++) - tb->hash[i] = NULL; - } - for (i = 0; i < tb->size; i++) { /* rehash */ - TString *p = tb->hash[i]; - tb->hash[i] = NULL; - while (p) { /* for each node in the list */ - TString *hnext = p->u.hnext; /* save next */ - unsigned int h = lmod(p->hash, newsize); /* new position */ - p->u.hnext = tb->hash[h]; /* chain it */ - tb->hash[h] = p; - p = hnext; - } - } - if (newsize < tb->size) { /* shrink table if needed */ - /* vanishing slice should be empty */ - lua_assert(tb->hash[newsize] == NULL && tb->hash[tb->size - 1] == NULL); - luaM_reallocvector(L, tb->hash, tb->size, newsize, TString *); - } - tb->size = newsize; -} - - -/* -** Clear API string cache. (Entries cannot be empty, so fill them with -** a non-collectable string.) -*/ -void luaS_clearcache (global_State *g) { - int i, j; - for (i = 0; i < STRCACHE_N; i++) - for (j = 0; j < STRCACHE_M; j++) { - if (iswhite(g->strcache[i][j])) /* will entry be collected? */ - g->strcache[i][j] = g->memerrmsg; /* replace it with something fixed */ - } -} - - -/* -** Initialize the string table and the string cache -*/ -void luaS_init (lua_State *L) { - global_State *g = G(L); - int i, j; - luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */ - /* pre-create memory-error message */ - g->memerrmsg = luaS_newliteral(L, MEMERRMSG); - luaC_fix(L, obj2gco(g->memerrmsg)); /* it should never be collected */ - for (i = 0; i < STRCACHE_N; i++) /* fill cache with valid strings */ - for (j = 0; j < STRCACHE_M; j++) - g->strcache[i][j] = g->memerrmsg; -} - - - -/* -** creates a new string object -*/ -static TString *createstrobj (lua_State *L, size_t l, int tag, unsigned int h) { - TString *ts; - GCObject *o; - size_t totalsize; /* total size of TString object */ - totalsize = sizelstring(l); - o = luaC_newobj(L, tag, totalsize); - ts = gco2ts(o); - ts->hash = h; - ts->extra = 0; - getstr(ts)[l] = '\0'; /* ending 0 */ - return ts; -} - - -TString *luaS_createlngstrobj (lua_State *L, size_t l) { - TString *ts = createstrobj(L, l, LUA_TLNGSTR, G(L)->seed); - ts->u.lnglen = l; - return ts; -} - - -void luaS_remove (lua_State *L, TString *ts) { - stringtable *tb = &G(L)->strt; - TString **p = &tb->hash[lmod(ts->hash, tb->size)]; - while (*p != ts) /* find previous element */ - p = &(*p)->u.hnext; - *p = (*p)->u.hnext; /* remove element from its list */ - tb->nuse--; -} - - -/* -** checks whether short string exists and reuses it or creates a new one -*/ -static TString *internshrstr (lua_State *L, const char *str, size_t l) { - TString *ts; - global_State *g = G(L); - unsigned int h = luaS_hash(str, l, g->seed); - TString **list = &g->strt.hash[lmod(h, g->strt.size)]; - lua_assert(str != NULL); /* otherwise 'memcmp'/'memcpy' are undefined */ - for (ts = *list; ts != NULL; ts = ts->u.hnext) { - if (l == ts->shrlen && - (memcmp(str, getstr(ts), l * sizeof(char)) == 0)) { - /* found! */ - if (isdead(g, ts)) /* dead (but not collected yet)? */ - changewhite(ts); /* resurrect it */ - return ts; - } - } - if (g->strt.nuse >= g->strt.size && g->strt.size <= MAX_INT/2) { - luaS_resize(L, g->strt.size * 2); - list = &g->strt.hash[lmod(h, g->strt.size)]; /* recompute with new size */ - } - ts = createstrobj(L, l, LUA_TSHRSTR, h); - memcpy(getstr(ts), str, l * sizeof(char)); - ts->shrlen = cast_byte(l); - ts->u.hnext = *list; - *list = ts; - g->strt.nuse++; - return ts; -} - - -/* -** new string (with explicit length) -*/ -TString *luaS_newlstr (lua_State *L, const char *str, size_t l) { - if (l <= LUAI_MAXSHORTLEN) /* short string? */ - return internshrstr(L, str, l); - else { - TString *ts; - if (l >= (MAX_SIZE - sizeof(TString))/sizeof(char)) - luaM_toobig(L); - ts = luaS_createlngstrobj(L, l); - memcpy(getstr(ts), str, l * sizeof(char)); - return ts; - } -} - - -/* -** Create or reuse a zero-terminated string, first checking in the -** cache (using the string address as a key). The cache can contain -** only zero-terminated strings, so it is safe to use 'strcmp' to -** check hits. -*/ -TString *luaS_new (lua_State *L, const char *str) { - unsigned int i = point2uint(str) % STRCACHE_N; /* hash */ - int j; - TString **p = G(L)->strcache[i]; - for (j = 0; j < STRCACHE_M; j++) { - if (strcmp(str, getstr(p[j])) == 0) /* hit? */ - return p[j]; /* that is it */ - } - /* normal route */ - for (j = STRCACHE_M - 1; j > 0; j--) - p[j] = p[j - 1]; /* move out last element */ - /* new element is first in the list */ - p[0] = luaS_newlstr(L, str, strlen(str)); - return p[0]; -} - - -Udata *luaS_newudata (lua_State *L, size_t s) { - Udata *u; - GCObject *o; - if (s > MAX_SIZE - sizeof(Udata)) - luaM_toobig(L); - o = luaC_newobj(L, LUA_TUSERDATA, sizeludata(s)); - u = gco2u(o); - u->len = s; - u->metatable = NULL; - setuservalue(L, u, luaO_nilobject); - return u; -} - diff --git a/deps/rcheevos/test/lua/src/lstring.h b/deps/rcheevos/test/lua/src/lstring.h deleted file mode 100644 index 27efd20772..0000000000 --- a/deps/rcheevos/test/lua/src/lstring.h +++ /dev/null @@ -1,49 +0,0 @@ -/* -** $Id: lstring.h,v 1.61 2015/11/03 15:36:01 roberto Exp $ -** String table (keep all strings handled by Lua) -** See Copyright Notice in lua.h -*/ - -#ifndef lstring_h -#define lstring_h - -#include "lgc.h" -#include "lobject.h" -#include "lstate.h" - - -#define sizelstring(l) (sizeof(union UTString) + ((l) + 1) * sizeof(char)) - -#define sizeludata(l) (sizeof(union UUdata) + (l)) -#define sizeudata(u) sizeludata((u)->len) - -#define luaS_newliteral(L, s) (luaS_newlstr(L, "" s, \ - (sizeof(s)/sizeof(char))-1)) - - -/* -** test whether a string is a reserved word -*/ -#define isreserved(s) ((s)->tt == LUA_TSHRSTR && (s)->extra > 0) - - -/* -** equality for short strings, which are always internalized -*/ -#define eqshrstr(a,b) check_exp((a)->tt == LUA_TSHRSTR, (a) == (b)) - - -LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed); -LUAI_FUNC unsigned int luaS_hashlongstr (TString *ts); -LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b); -LUAI_FUNC void luaS_resize (lua_State *L, int newsize); -LUAI_FUNC void luaS_clearcache (global_State *g); -LUAI_FUNC void luaS_init (lua_State *L); -LUAI_FUNC void luaS_remove (lua_State *L, TString *ts); -LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s); -LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l); -LUAI_FUNC TString *luaS_new (lua_State *L, const char *str); -LUAI_FUNC TString *luaS_createlngstrobj (lua_State *L, size_t l); - - -#endif diff --git a/deps/rcheevos/test/lua/src/lstrlib.c b/deps/rcheevos/test/lua/src/lstrlib.c deleted file mode 100644 index c7aa755fab..0000000000 --- a/deps/rcheevos/test/lua/src/lstrlib.c +++ /dev/null @@ -1,1584 +0,0 @@ -/* -** $Id: lstrlib.c,v 1.254 2016/12/22 13:08:50 roberto Exp $ -** Standard library for string operations and pattern-matching -** See Copyright Notice in lua.h -*/ - -#define lstrlib_c -#define LUA_LIB - -#include "lprefix.h" - - -#include -#include -#include -#include -#include -#include -#include -#include - -#include "lua.h" - -#include "lauxlib.h" -#include "lualib.h" - - -/* -** maximum number of captures that a pattern can do during -** pattern-matching. This limit is arbitrary, but must fit in -** an unsigned char. -*/ -#if !defined(LUA_MAXCAPTURES) -#define LUA_MAXCAPTURES 32 -#endif - - -/* macro to 'unsign' a character */ -#define uchar(c) ((unsigned char)(c)) - - -/* -** Some sizes are better limited to fit in 'int', but must also fit in -** 'size_t'. (We assume that 'lua_Integer' cannot be smaller than 'int'.) -*/ -#define MAX_SIZET ((size_t)(~(size_t)0)) - -#define MAXSIZE \ - (sizeof(size_t) < sizeof(int) ? MAX_SIZET : (size_t)(INT_MAX)) - - - - -static int str_len (lua_State *L) { - size_t l; - luaL_checklstring(L, 1, &l); - lua_pushinteger(L, (lua_Integer)l); - return 1; -} - - -/* translate a relative string position: negative means back from end */ -static lua_Integer posrelat (lua_Integer pos, size_t len) { - if (pos >= 0) return pos; - else if (0u - (size_t)pos > len) return 0; - else return (lua_Integer)len + pos + 1; -} - - -static int str_sub (lua_State *L) { - size_t l; - const char *s = luaL_checklstring(L, 1, &l); - lua_Integer start = posrelat(luaL_checkinteger(L, 2), l); - lua_Integer end = posrelat(luaL_optinteger(L, 3, -1), l); - if (start < 1) start = 1; - if (end > (lua_Integer)l) end = l; - if (start <= end) - lua_pushlstring(L, s + start - 1, (size_t)(end - start) + 1); - else lua_pushliteral(L, ""); - return 1; -} - - -static int str_reverse (lua_State *L) { - size_t l, i; - luaL_Buffer b; - const char *s = luaL_checklstring(L, 1, &l); - char *p = luaL_buffinitsize(L, &b, l); - for (i = 0; i < l; i++) - p[i] = s[l - i - 1]; - luaL_pushresultsize(&b, l); - return 1; -} - - -static int str_lower (lua_State *L) { - size_t l; - size_t i; - luaL_Buffer b; - const char *s = luaL_checklstring(L, 1, &l); - char *p = luaL_buffinitsize(L, &b, l); - for (i=0; i MAXSIZE / n) /* may overflow? */ - return luaL_error(L, "resulting string too large"); - else { - size_t totallen = (size_t)n * l + (size_t)(n - 1) * lsep; - luaL_Buffer b; - char *p = luaL_buffinitsize(L, &b, totallen); - while (n-- > 1) { /* first n-1 copies (followed by separator) */ - memcpy(p, s, l * sizeof(char)); p += l; - if (lsep > 0) { /* empty 'memcpy' is not that cheap */ - memcpy(p, sep, lsep * sizeof(char)); - p += lsep; - } - } - memcpy(p, s, l * sizeof(char)); /* last copy (not followed by separator) */ - luaL_pushresultsize(&b, totallen); - } - return 1; -} - - -static int str_byte (lua_State *L) { - size_t l; - const char *s = luaL_checklstring(L, 1, &l); - lua_Integer posi = posrelat(luaL_optinteger(L, 2, 1), l); - lua_Integer pose = posrelat(luaL_optinteger(L, 3, posi), l); - int n, i; - if (posi < 1) posi = 1; - if (pose > (lua_Integer)l) pose = l; - if (posi > pose) return 0; /* empty interval; return no values */ - if (pose - posi >= INT_MAX) /* arithmetic overflow? */ - return luaL_error(L, "string slice too long"); - n = (int)(pose - posi) + 1; - luaL_checkstack(L, n, "string slice too long"); - for (i=0; i= ms->level || ms->capture[l].len == CAP_UNFINISHED) - return luaL_error(ms->L, "invalid capture index %%%d", l + 1); - return l; -} - - -static int capture_to_close (MatchState *ms) { - int level = ms->level; - for (level--; level>=0; level--) - if (ms->capture[level].len == CAP_UNFINISHED) return level; - return luaL_error(ms->L, "invalid pattern capture"); -} - - -static const char *classend (MatchState *ms, const char *p) { - switch (*p++) { - case L_ESC: { - if (p == ms->p_end) - luaL_error(ms->L, "malformed pattern (ends with '%%')"); - return p+1; - } - case '[': { - if (*p == '^') p++; - do { /* look for a ']' */ - if (p == ms->p_end) - luaL_error(ms->L, "malformed pattern (missing ']')"); - if (*(p++) == L_ESC && p < ms->p_end) - p++; /* skip escapes (e.g. '%]') */ - } while (*p != ']'); - return p+1; - } - default: { - return p; - } - } -} - - -static int match_class (int c, int cl) { - int res; - switch (tolower(cl)) { - case 'a' : res = isalpha(c); break; - case 'c' : res = iscntrl(c); break; - case 'd' : res = isdigit(c); break; - case 'g' : res = isgraph(c); break; - case 'l' : res = islower(c); break; - case 'p' : res = ispunct(c); break; - case 's' : res = isspace(c); break; - case 'u' : res = isupper(c); break; - case 'w' : res = isalnum(c); break; - case 'x' : res = isxdigit(c); break; - case 'z' : res = (c == 0); break; /* deprecated option */ - default: return (cl == c); - } - return (islower(cl) ? res : !res); -} - - -static int matchbracketclass (int c, const char *p, const char *ec) { - int sig = 1; - if (*(p+1) == '^') { - sig = 0; - p++; /* skip the '^' */ - } - while (++p < ec) { - if (*p == L_ESC) { - p++; - if (match_class(c, uchar(*p))) - return sig; - } - else if ((*(p+1) == '-') && (p+2 < ec)) { - p+=2; - if (uchar(*(p-2)) <= c && c <= uchar(*p)) - return sig; - } - else if (uchar(*p) == c) return sig; - } - return !sig; -} - - -static int singlematch (MatchState *ms, const char *s, const char *p, - const char *ep) { - if (s >= ms->src_end) - return 0; - else { - int c = uchar(*s); - switch (*p) { - case '.': return 1; /* matches any char */ - case L_ESC: return match_class(c, uchar(*(p+1))); - case '[': return matchbracketclass(c, p, ep-1); - default: return (uchar(*p) == c); - } - } -} - - -static const char *matchbalance (MatchState *ms, const char *s, - const char *p) { - if (p >= ms->p_end - 1) - luaL_error(ms->L, "malformed pattern (missing arguments to '%%b')"); - if (*s != *p) return NULL; - else { - int b = *p; - int e = *(p+1); - int cont = 1; - while (++s < ms->src_end) { - if (*s == e) { - if (--cont == 0) return s+1; - } - else if (*s == b) cont++; - } - } - return NULL; /* string ends out of balance */ -} - - -static const char *max_expand (MatchState *ms, const char *s, - const char *p, const char *ep) { - ptrdiff_t i = 0; /* counts maximum expand for item */ - while (singlematch(ms, s + i, p, ep)) - i++; - /* keeps trying to match with the maximum repetitions */ - while (i>=0) { - const char *res = match(ms, (s+i), ep+1); - if (res) return res; - i--; /* else didn't match; reduce 1 repetition to try again */ - } - return NULL; -} - - -static const char *min_expand (MatchState *ms, const char *s, - const char *p, const char *ep) { - for (;;) { - const char *res = match(ms, s, ep+1); - if (res != NULL) - return res; - else if (singlematch(ms, s, p, ep)) - s++; /* try with one more repetition */ - else return NULL; - } -} - - -static const char *start_capture (MatchState *ms, const char *s, - const char *p, int what) { - const char *res; - int level = ms->level; - if (level >= LUA_MAXCAPTURES) luaL_error(ms->L, "too many captures"); - ms->capture[level].init = s; - ms->capture[level].len = what; - ms->level = level+1; - if ((res=match(ms, s, p)) == NULL) /* match failed? */ - ms->level--; /* undo capture */ - return res; -} - - -static const char *end_capture (MatchState *ms, const char *s, - const char *p) { - int l = capture_to_close(ms); - const char *res; - ms->capture[l].len = s - ms->capture[l].init; /* close capture */ - if ((res = match(ms, s, p)) == NULL) /* match failed? */ - ms->capture[l].len = CAP_UNFINISHED; /* undo capture */ - return res; -} - - -static const char *match_capture (MatchState *ms, const char *s, int l) { - size_t len; - l = check_capture(ms, l); - len = ms->capture[l].len; - if ((size_t)(ms->src_end-s) >= len && - memcmp(ms->capture[l].init, s, len) == 0) - return s+len; - else return NULL; -} - - -static const char *match (MatchState *ms, const char *s, const char *p) { - if (ms->matchdepth-- == 0) - luaL_error(ms->L, "pattern too complex"); - init: /* using goto's to optimize tail recursion */ - if (p != ms->p_end) { /* end of pattern? */ - switch (*p) { - case '(': { /* start capture */ - if (*(p + 1) == ')') /* position capture? */ - s = start_capture(ms, s, p + 2, CAP_POSITION); - else - s = start_capture(ms, s, p + 1, CAP_UNFINISHED); - break; - } - case ')': { /* end capture */ - s = end_capture(ms, s, p + 1); - break; - } - case '$': { - if ((p + 1) != ms->p_end) /* is the '$' the last char in pattern? */ - goto dflt; /* no; go to default */ - s = (s == ms->src_end) ? s : NULL; /* check end of string */ - break; - } - case L_ESC: { /* escaped sequences not in the format class[*+?-]? */ - switch (*(p + 1)) { - case 'b': { /* balanced string? */ - s = matchbalance(ms, s, p + 2); - if (s != NULL) { - p += 4; goto init; /* return match(ms, s, p + 4); */ - } /* else fail (s == NULL) */ - break; - } - case 'f': { /* frontier? */ - const char *ep; char previous; - p += 2; - if (*p != '[') - luaL_error(ms->L, "missing '[' after '%%f' in pattern"); - ep = classend(ms, p); /* points to what is next */ - previous = (s == ms->src_init) ? '\0' : *(s - 1); - if (!matchbracketclass(uchar(previous), p, ep - 1) && - matchbracketclass(uchar(*s), p, ep - 1)) { - p = ep; goto init; /* return match(ms, s, ep); */ - } - s = NULL; /* match failed */ - break; - } - case '0': case '1': case '2': case '3': - case '4': case '5': case '6': case '7': - case '8': case '9': { /* capture results (%0-%9)? */ - s = match_capture(ms, s, uchar(*(p + 1))); - if (s != NULL) { - p += 2; goto init; /* return match(ms, s, p + 2) */ - } - break; - } - default: goto dflt; - } - break; - } - default: dflt: { /* pattern class plus optional suffix */ - const char *ep = classend(ms, p); /* points to optional suffix */ - /* does not match at least once? */ - if (!singlematch(ms, s, p, ep)) { - if (*ep == '*' || *ep == '?' || *ep == '-') { /* accept empty? */ - p = ep + 1; goto init; /* return match(ms, s, ep + 1); */ - } - else /* '+' or no suffix */ - s = NULL; /* fail */ - } - else { /* matched once */ - switch (*ep) { /* handle optional suffix */ - case '?': { /* optional */ - const char *res; - if ((res = match(ms, s + 1, ep + 1)) != NULL) - s = res; - else { - p = ep + 1; goto init; /* else return match(ms, s, ep + 1); */ - } - break; - } - case '+': /* 1 or more repetitions */ - s++; /* 1 match already done */ - /* FALLTHROUGH */ - case '*': /* 0 or more repetitions */ - s = max_expand(ms, s, p, ep); - break; - case '-': /* 0 or more repetitions (minimum) */ - s = min_expand(ms, s, p, ep); - break; - default: /* no suffix */ - s++; p = ep; goto init; /* return match(ms, s + 1, ep); */ - } - } - break; - } - } - } - ms->matchdepth++; - return s; -} - - - -static const char *lmemfind (const char *s1, size_t l1, - const char *s2, size_t l2) { - if (l2 == 0) return s1; /* empty strings are everywhere */ - else if (l2 > l1) return NULL; /* avoids a negative 'l1' */ - else { - const char *init; /* to search for a '*s2' inside 's1' */ - l2--; /* 1st char will be checked by 'memchr' */ - l1 = l1-l2; /* 's2' cannot be found after that */ - while (l1 > 0 && (init = (const char *)memchr(s1, *s2, l1)) != NULL) { - init++; /* 1st char is already checked */ - if (memcmp(init, s2+1, l2) == 0) - return init-1; - else { /* correct 'l1' and 's1' to try again */ - l1 -= init-s1; - s1 = init; - } - } - return NULL; /* not found */ - } -} - - -static void push_onecapture (MatchState *ms, int i, const char *s, - const char *e) { - if (i >= ms->level) { - if (i == 0) /* ms->level == 0, too */ - lua_pushlstring(ms->L, s, e - s); /* add whole match */ - else - luaL_error(ms->L, "invalid capture index %%%d", i + 1); - } - else { - ptrdiff_t l = ms->capture[i].len; - if (l == CAP_UNFINISHED) luaL_error(ms->L, "unfinished capture"); - if (l == CAP_POSITION) - lua_pushinteger(ms->L, (ms->capture[i].init - ms->src_init) + 1); - else - lua_pushlstring(ms->L, ms->capture[i].init, l); - } -} - - -static int push_captures (MatchState *ms, const char *s, const char *e) { - int i; - int nlevels = (ms->level == 0 && s) ? 1 : ms->level; - luaL_checkstack(ms->L, nlevels, "too many captures"); - for (i = 0; i < nlevels; i++) - push_onecapture(ms, i, s, e); - return nlevels; /* number of strings pushed */ -} - - -/* check whether pattern has no special characters */ -static int nospecials (const char *p, size_t l) { - size_t upto = 0; - do { - if (strpbrk(p + upto, SPECIALS)) - return 0; /* pattern has a special character */ - upto += strlen(p + upto) + 1; /* may have more after \0 */ - } while (upto <= l); - return 1; /* no special chars found */ -} - - -static void prepstate (MatchState *ms, lua_State *L, - const char *s, size_t ls, const char *p, size_t lp) { - ms->L = L; - ms->matchdepth = MAXCCALLS; - ms->src_init = s; - ms->src_end = s + ls; - ms->p_end = p + lp; -} - - -static void reprepstate (MatchState *ms) { - ms->level = 0; - lua_assert(ms->matchdepth == MAXCCALLS); -} - - -static int str_find_aux (lua_State *L, int find) { - size_t ls, lp; - const char *s = luaL_checklstring(L, 1, &ls); - const char *p = luaL_checklstring(L, 2, &lp); - lua_Integer init = posrelat(luaL_optinteger(L, 3, 1), ls); - if (init < 1) init = 1; - else if (init > (lua_Integer)ls + 1) { /* start after string's end? */ - lua_pushnil(L); /* cannot find anything */ - return 1; - } - /* explicit request or no special characters? */ - if (find && (lua_toboolean(L, 4) || nospecials(p, lp))) { - /* do a plain search */ - const char *s2 = lmemfind(s + init - 1, ls - (size_t)init + 1, p, lp); - if (s2) { - lua_pushinteger(L, (s2 - s) + 1); - lua_pushinteger(L, (s2 - s) + lp); - return 2; - } - } - else { - MatchState ms; - const char *s1 = s + init - 1; - int anchor = (*p == '^'); - if (anchor) { - p++; lp--; /* skip anchor character */ - } - prepstate(&ms, L, s, ls, p, lp); - do { - const char *res; - reprepstate(&ms); - if ((res=match(&ms, s1, p)) != NULL) { - if (find) { - lua_pushinteger(L, (s1 - s) + 1); /* start */ - lua_pushinteger(L, res - s); /* end */ - return push_captures(&ms, NULL, 0) + 2; - } - else - return push_captures(&ms, s1, res); - } - } while (s1++ < ms.src_end && !anchor); - } - lua_pushnil(L); /* not found */ - return 1; -} - - -static int str_find (lua_State *L) { - return str_find_aux(L, 1); -} - - -static int str_match (lua_State *L) { - return str_find_aux(L, 0); -} - - -/* state for 'gmatch' */ -typedef struct GMatchState { - const char *src; /* current position */ - const char *p; /* pattern */ - const char *lastmatch; /* end of last match */ - MatchState ms; /* match state */ -} GMatchState; - - -static int gmatch_aux (lua_State *L) { - GMatchState *gm = (GMatchState *)lua_touserdata(L, lua_upvalueindex(3)); - const char *src; - gm->ms.L = L; - for (src = gm->src; src <= gm->ms.src_end; src++) { - const char *e; - reprepstate(&gm->ms); - if ((e = match(&gm->ms, src, gm->p)) != NULL && e != gm->lastmatch) { - gm->src = gm->lastmatch = e; - return push_captures(&gm->ms, src, e); - } - } - return 0; /* not found */ -} - - -static int gmatch (lua_State *L) { - size_t ls, lp; - const char *s = luaL_checklstring(L, 1, &ls); - const char *p = luaL_checklstring(L, 2, &lp); - GMatchState *gm; - lua_settop(L, 2); /* keep them on closure to avoid being collected */ - gm = (GMatchState *)lua_newuserdata(L, sizeof(GMatchState)); - prepstate(&gm->ms, L, s, ls, p, lp); - gm->src = s; gm->p = p; gm->lastmatch = NULL; - lua_pushcclosure(L, gmatch_aux, 3); - return 1; -} - - -static void add_s (MatchState *ms, luaL_Buffer *b, const char *s, - const char *e) { - size_t l, i; - lua_State *L = ms->L; - const char *news = lua_tolstring(L, 3, &l); - for (i = 0; i < l; i++) { - if (news[i] != L_ESC) - luaL_addchar(b, news[i]); - else { - i++; /* skip ESC */ - if (!isdigit(uchar(news[i]))) { - if (news[i] != L_ESC) - luaL_error(L, "invalid use of '%c' in replacement string", L_ESC); - luaL_addchar(b, news[i]); - } - else if (news[i] == '0') - luaL_addlstring(b, s, e - s); - else { - push_onecapture(ms, news[i] - '1', s, e); - luaL_tolstring(L, -1, NULL); /* if number, convert it to string */ - lua_remove(L, -2); /* remove original value */ - luaL_addvalue(b); /* add capture to accumulated result */ - } - } - } -} - - -static void add_value (MatchState *ms, luaL_Buffer *b, const char *s, - const char *e, int tr) { - lua_State *L = ms->L; - switch (tr) { - case LUA_TFUNCTION: { - int n; - lua_pushvalue(L, 3); - n = push_captures(ms, s, e); - lua_call(L, n, 1); - break; - } - case LUA_TTABLE: { - push_onecapture(ms, 0, s, e); - lua_gettable(L, 3); - break; - } - default: { /* LUA_TNUMBER or LUA_TSTRING */ - add_s(ms, b, s, e); - return; - } - } - if (!lua_toboolean(L, -1)) { /* nil or false? */ - lua_pop(L, 1); - lua_pushlstring(L, s, e - s); /* keep original text */ - } - else if (!lua_isstring(L, -1)) - luaL_error(L, "invalid replacement value (a %s)", luaL_typename(L, -1)); - luaL_addvalue(b); /* add result to accumulator */ -} - - -static int str_gsub (lua_State *L) { - size_t srcl, lp; - const char *src = luaL_checklstring(L, 1, &srcl); /* subject */ - const char *p = luaL_checklstring(L, 2, &lp); /* pattern */ - const char *lastmatch = NULL; /* end of last match */ - int tr = lua_type(L, 3); /* replacement type */ - lua_Integer max_s = luaL_optinteger(L, 4, srcl + 1); /* max replacements */ - int anchor = (*p == '^'); - lua_Integer n = 0; /* replacement count */ - MatchState ms; - luaL_Buffer b; - luaL_argcheck(L, tr == LUA_TNUMBER || tr == LUA_TSTRING || - tr == LUA_TFUNCTION || tr == LUA_TTABLE, 3, - "string/function/table expected"); - luaL_buffinit(L, &b); - if (anchor) { - p++; lp--; /* skip anchor character */ - } - prepstate(&ms, L, src, srcl, p, lp); - while (n < max_s) { - const char *e; - reprepstate(&ms); /* (re)prepare state for new match */ - if ((e = match(&ms, src, p)) != NULL && e != lastmatch) { /* match? */ - n++; - add_value(&ms, &b, src, e, tr); /* add replacement to buffer */ - src = lastmatch = e; - } - else if (src < ms.src_end) /* otherwise, skip one character */ - luaL_addchar(&b, *src++); - else break; /* end of subject */ - if (anchor) break; - } - luaL_addlstring(&b, src, ms.src_end-src); - luaL_pushresult(&b); - lua_pushinteger(L, n); /* number of substitutions */ - return 2; -} - -/* }====================================================== */ - - - -/* -** {====================================================== -** STRING FORMAT -** ======================================================= -*/ - -#if !defined(lua_number2strx) /* { */ - -/* -** Hexadecimal floating-point formatter -*/ - -#include - -#define SIZELENMOD (sizeof(LUA_NUMBER_FRMLEN)/sizeof(char)) - - -/* -** Number of bits that goes into the first digit. It can be any value -** between 1 and 4; the following definition tries to align the number -** to nibble boundaries by making what is left after that first digit a -** multiple of 4. -*/ -#define L_NBFD ((l_mathlim(MANT_DIG) - 1)%4 + 1) - - -/* -** Add integer part of 'x' to buffer and return new 'x' -*/ -static lua_Number adddigit (char *buff, int n, lua_Number x) { - lua_Number dd = l_mathop(floor)(x); /* get integer part from 'x' */ - int d = (int)dd; - buff[n] = (d < 10 ? d + '0' : d - 10 + 'a'); /* add to buffer */ - return x - dd; /* return what is left */ -} - - -static int num2straux (char *buff, int sz, lua_Number x) { - /* if 'inf' or 'NaN', format it like '%g' */ - if (x != x || x == (lua_Number)HUGE_VAL || x == -(lua_Number)HUGE_VAL) - return l_sprintf(buff, sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)x); - else if (x == 0) { /* can be -0... */ - /* create "0" or "-0" followed by exponent */ - return l_sprintf(buff, sz, LUA_NUMBER_FMT "x0p+0", (LUAI_UACNUMBER)x); - } - else { - int e; - lua_Number m = l_mathop(frexp)(x, &e); /* 'x' fraction and exponent */ - int n = 0; /* character count */ - if (m < 0) { /* is number negative? */ - buff[n++] = '-'; /* add signal */ - m = -m; /* make it positive */ - } - buff[n++] = '0'; buff[n++] = 'x'; /* add "0x" */ - m = adddigit(buff, n++, m * (1 << L_NBFD)); /* add first digit */ - e -= L_NBFD; /* this digit goes before the radix point */ - if (m > 0) { /* more digits? */ - buff[n++] = lua_getlocaledecpoint(); /* add radix point */ - do { /* add as many digits as needed */ - m = adddigit(buff, n++, m * 16); - } while (m > 0); - } - n += l_sprintf(buff + n, sz - n, "p%+d", e); /* add exponent */ - lua_assert(n < sz); - return n; - } -} - - -static int lua_number2strx (lua_State *L, char *buff, int sz, - const char *fmt, lua_Number x) { - int n = num2straux(buff, sz, x); - if (fmt[SIZELENMOD] == 'A') { - int i; - for (i = 0; i < n; i++) - buff[i] = toupper(uchar(buff[i])); - } - else if (fmt[SIZELENMOD] != 'a') - luaL_error(L, "modifiers for format '%%a'/'%%A' not implemented"); - return n; -} - -#endif /* } */ - - -/* -** Maximum size of each formatted item. This maximum size is produced -** by format('%.99f', -maxfloat), and is equal to 99 + 3 ('-', '.', -** and '\0') + number of decimal digits to represent maxfloat (which -** is maximum exponent + 1). (99+3+1 then rounded to 120 for "extra -** expenses", such as locale-dependent stuff) -*/ -#define MAX_ITEM (120 + l_mathlim(MAX_10_EXP)) - - -/* valid flags in a format specification */ -#define FLAGS "-+ #0" - -/* -** maximum size of each format specification (such as "%-099.99d") -*/ -#define MAX_FORMAT 32 - - -static void addquoted (luaL_Buffer *b, const char *s, size_t len) { - luaL_addchar(b, '"'); - while (len--) { - if (*s == '"' || *s == '\\' || *s == '\n') { - luaL_addchar(b, '\\'); - luaL_addchar(b, *s); - } - else if (iscntrl(uchar(*s))) { - char buff[10]; - if (!isdigit(uchar(*(s+1)))) - l_sprintf(buff, sizeof(buff), "\\%d", (int)uchar(*s)); - else - l_sprintf(buff, sizeof(buff), "\\%03d", (int)uchar(*s)); - luaL_addstring(b, buff); - } - else - luaL_addchar(b, *s); - s++; - } - luaL_addchar(b, '"'); -} - - -/* -** Ensures the 'buff' string uses a dot as the radix character. -*/ -static void checkdp (char *buff, int nb) { - if (memchr(buff, '.', nb) == NULL) { /* no dot? */ - char point = lua_getlocaledecpoint(); /* try locale point */ - char *ppoint = (char *)memchr(buff, point, nb); - if (ppoint) *ppoint = '.'; /* change it to a dot */ - } -} - - -static void addliteral (lua_State *L, luaL_Buffer *b, int arg) { - switch (lua_type(L, arg)) { - case LUA_TSTRING: { - size_t len; - const char *s = lua_tolstring(L, arg, &len); - addquoted(b, s, len); - break; - } - case LUA_TNUMBER: { - char *buff = luaL_prepbuffsize(b, MAX_ITEM); - int nb; - if (!lua_isinteger(L, arg)) { /* float? */ - lua_Number n = lua_tonumber(L, arg); /* write as hexa ('%a') */ - nb = lua_number2strx(L, buff, MAX_ITEM, "%" LUA_NUMBER_FRMLEN "a", n); - checkdp(buff, nb); /* ensure it uses a dot */ - } - else { /* integers */ - lua_Integer n = lua_tointeger(L, arg); - const char *format = (n == LUA_MININTEGER) /* corner case? */ - ? "0x%" LUA_INTEGER_FRMLEN "x" /* use hexa */ - : LUA_INTEGER_FMT; /* else use default format */ - nb = l_sprintf(buff, MAX_ITEM, format, (LUAI_UACINT)n); - } - luaL_addsize(b, nb); - break; - } - case LUA_TNIL: case LUA_TBOOLEAN: { - luaL_tolstring(L, arg, NULL); - luaL_addvalue(b); - break; - } - default: { - luaL_argerror(L, arg, "value has no literal form"); - } - } -} - - -static const char *scanformat (lua_State *L, const char *strfrmt, char *form) { - const char *p = strfrmt; - while (*p != '\0' && strchr(FLAGS, *p) != NULL) p++; /* skip flags */ - if ((size_t)(p - strfrmt) >= sizeof(FLAGS)/sizeof(char)) - luaL_error(L, "invalid format (repeated flags)"); - if (isdigit(uchar(*p))) p++; /* skip width */ - if (isdigit(uchar(*p))) p++; /* (2 digits at most) */ - if (*p == '.') { - p++; - if (isdigit(uchar(*p))) p++; /* skip precision */ - if (isdigit(uchar(*p))) p++; /* (2 digits at most) */ - } - if (isdigit(uchar(*p))) - luaL_error(L, "invalid format (width or precision too long)"); - *(form++) = '%'; - memcpy(form, strfrmt, ((p - strfrmt) + 1) * sizeof(char)); - form += (p - strfrmt) + 1; - *form = '\0'; - return p; -} - - -/* -** add length modifier into formats -*/ -static void addlenmod (char *form, const char *lenmod) { - size_t l = strlen(form); - size_t lm = strlen(lenmod); - char spec = form[l - 1]; - strcpy(form + l - 1, lenmod); - form[l + lm - 1] = spec; - form[l + lm] = '\0'; -} - - -static int str_format (lua_State *L) { - int top = lua_gettop(L); - int arg = 1; - size_t sfl; - const char *strfrmt = luaL_checklstring(L, arg, &sfl); - const char *strfrmt_end = strfrmt+sfl; - luaL_Buffer b; - luaL_buffinit(L, &b); - while (strfrmt < strfrmt_end) { - if (*strfrmt != L_ESC) - luaL_addchar(&b, *strfrmt++); - else if (*++strfrmt == L_ESC) - luaL_addchar(&b, *strfrmt++); /* %% */ - else { /* format item */ - char form[MAX_FORMAT]; /* to store the format ('%...') */ - char *buff = luaL_prepbuffsize(&b, MAX_ITEM); /* to put formatted item */ - int nb = 0; /* number of bytes in added item */ - if (++arg > top) - luaL_argerror(L, arg, "no value"); - strfrmt = scanformat(L, strfrmt, form); - switch (*strfrmt++) { - case 'c': { - nb = l_sprintf(buff, MAX_ITEM, form, (int)luaL_checkinteger(L, arg)); - break; - } - case 'd': case 'i': - case 'o': case 'u': case 'x': case 'X': { - lua_Integer n = luaL_checkinteger(L, arg); - addlenmod(form, LUA_INTEGER_FRMLEN); - nb = l_sprintf(buff, MAX_ITEM, form, (LUAI_UACINT)n); - break; - } - case 'a': case 'A': - addlenmod(form, LUA_NUMBER_FRMLEN); - nb = lua_number2strx(L, buff, MAX_ITEM, form, - luaL_checknumber(L, arg)); - break; - case 'e': case 'E': case 'f': - case 'g': case 'G': { - lua_Number n = luaL_checknumber(L, arg); - addlenmod(form, LUA_NUMBER_FRMLEN); - nb = l_sprintf(buff, MAX_ITEM, form, (LUAI_UACNUMBER)n); - break; - } - case 'q': { - addliteral(L, &b, arg); - break; - } - case 's': { - size_t l; - const char *s = luaL_tolstring(L, arg, &l); - if (form[2] == '\0') /* no modifiers? */ - luaL_addvalue(&b); /* keep entire string */ - else { - luaL_argcheck(L, l == strlen(s), arg, "string contains zeros"); - if (!strchr(form, '.') && l >= 100) { - /* no precision and string is too long to be formatted */ - luaL_addvalue(&b); /* keep entire string */ - } - else { /* format the string into 'buff' */ - nb = l_sprintf(buff, MAX_ITEM, form, s); - lua_pop(L, 1); /* remove result from 'luaL_tolstring' */ - } - } - break; - } - default: { /* also treat cases 'pnLlh' */ - return luaL_error(L, "invalid option '%%%c' to 'format'", - *(strfrmt - 1)); - } - } - lua_assert(nb < MAX_ITEM); - luaL_addsize(&b, nb); - } - } - luaL_pushresult(&b); - return 1; -} - -/* }====================================================== */ - - -/* -** {====================================================== -** PACK/UNPACK -** ======================================================= -*/ - - -/* value used for padding */ -#if !defined(LUAL_PACKPADBYTE) -#define LUAL_PACKPADBYTE 0x00 -#endif - -/* maximum size for the binary representation of an integer */ -#define MAXINTSIZE 16 - -/* number of bits in a character */ -#define NB CHAR_BIT - -/* mask for one character (NB 1's) */ -#define MC ((1 << NB) - 1) - -/* size of a lua_Integer */ -#define SZINT ((int)sizeof(lua_Integer)) - - -/* dummy union to get native endianness */ -static const union { - int dummy; - char little; /* true iff machine is little endian */ -} nativeendian = {1}; - - -/* dummy structure to get native alignment requirements */ -struct cD { - char c; - union { double d; void *p; lua_Integer i; lua_Number n; } u; -}; - -#define MAXALIGN (offsetof(struct cD, u)) - - -/* -** Union for serializing floats -*/ -typedef union Ftypes { - float f; - double d; - lua_Number n; - char buff[5 * sizeof(lua_Number)]; /* enough for any float type */ -} Ftypes; - - -/* -** information to pack/unpack stuff -*/ -typedef struct Header { - lua_State *L; - int islittle; - int maxalign; -} Header; - - -/* -** options for pack/unpack -*/ -typedef enum KOption { - Kint, /* signed integers */ - Kuint, /* unsigned integers */ - Kfloat, /* floating-point numbers */ - Kchar, /* fixed-length strings */ - Kstring, /* strings with prefixed length */ - Kzstr, /* zero-terminated strings */ - Kpadding, /* padding */ - Kpaddalign, /* padding for alignment */ - Knop /* no-op (configuration or spaces) */ -} KOption; - - -/* -** Read an integer numeral from string 'fmt' or return 'df' if -** there is no numeral -*/ -static int digit (int c) { return '0' <= c && c <= '9'; } - -static int getnum (const char **fmt, int df) { - if (!digit(**fmt)) /* no number? */ - return df; /* return default value */ - else { - int a = 0; - do { - a = a*10 + (*((*fmt)++) - '0'); - } while (digit(**fmt) && a <= ((int)MAXSIZE - 9)/10); - return a; - } -} - - -/* -** Read an integer numeral and raises an error if it is larger -** than the maximum size for integers. -*/ -static int getnumlimit (Header *h, const char **fmt, int df) { - int sz = getnum(fmt, df); - if (sz > MAXINTSIZE || sz <= 0) - luaL_error(h->L, "integral size (%d) out of limits [1,%d]", - sz, MAXINTSIZE); - return sz; -} - - -/* -** Initialize Header -*/ -static void initheader (lua_State *L, Header *h) { - h->L = L; - h->islittle = nativeendian.little; - h->maxalign = 1; -} - - -/* -** Read and classify next option. 'size' is filled with option's size. -*/ -static KOption getoption (Header *h, const char **fmt, int *size) { - int opt = *((*fmt)++); - *size = 0; /* default */ - switch (opt) { - case 'b': *size = sizeof(char); return Kint; - case 'B': *size = sizeof(char); return Kuint; - case 'h': *size = sizeof(short); return Kint; - case 'H': *size = sizeof(short); return Kuint; - case 'l': *size = sizeof(long); return Kint; - case 'L': *size = sizeof(long); return Kuint; - case 'j': *size = sizeof(lua_Integer); return Kint; - case 'J': *size = sizeof(lua_Integer); return Kuint; - case 'T': *size = sizeof(size_t); return Kuint; - case 'f': *size = sizeof(float); return Kfloat; - case 'd': *size = sizeof(double); return Kfloat; - case 'n': *size = sizeof(lua_Number); return Kfloat; - case 'i': *size = getnumlimit(h, fmt, sizeof(int)); return Kint; - case 'I': *size = getnumlimit(h, fmt, sizeof(int)); return Kuint; - case 's': *size = getnumlimit(h, fmt, sizeof(size_t)); return Kstring; - case 'c': - *size = getnum(fmt, -1); - if (*size == -1) - luaL_error(h->L, "missing size for format option 'c'"); - return Kchar; - case 'z': return Kzstr; - case 'x': *size = 1; return Kpadding; - case 'X': return Kpaddalign; - case ' ': break; - case '<': h->islittle = 1; break; - case '>': h->islittle = 0; break; - case '=': h->islittle = nativeendian.little; break; - case '!': h->maxalign = getnumlimit(h, fmt, MAXALIGN); break; - default: luaL_error(h->L, "invalid format option '%c'", opt); - } - return Knop; -} - - -/* -** Read, classify, and fill other details about the next option. -** 'psize' is filled with option's size, 'notoalign' with its -** alignment requirements. -** Local variable 'size' gets the size to be aligned. (Kpadal option -** always gets its full alignment, other options are limited by -** the maximum alignment ('maxalign'). Kchar option needs no alignment -** despite its size. -*/ -static KOption getdetails (Header *h, size_t totalsize, - const char **fmt, int *psize, int *ntoalign) { - KOption opt = getoption(h, fmt, psize); - int align = *psize; /* usually, alignment follows size */ - if (opt == Kpaddalign) { /* 'X' gets alignment from following option */ - if (**fmt == '\0' || getoption(h, fmt, &align) == Kchar || align == 0) - luaL_argerror(h->L, 1, "invalid next option for option 'X'"); - } - if (align <= 1 || opt == Kchar) /* need no alignment? */ - *ntoalign = 0; - else { - if (align > h->maxalign) /* enforce maximum alignment */ - align = h->maxalign; - if ((align & (align - 1)) != 0) /* is 'align' not a power of 2? */ - luaL_argerror(h->L, 1, "format asks for alignment not power of 2"); - *ntoalign = (align - (int)(totalsize & (align - 1))) & (align - 1); - } - return opt; -} - - -/* -** Pack integer 'n' with 'size' bytes and 'islittle' endianness. -** The final 'if' handles the case when 'size' is larger than -** the size of a Lua integer, correcting the extra sign-extension -** bytes if necessary (by default they would be zeros). -*/ -static void packint (luaL_Buffer *b, lua_Unsigned n, - int islittle, int size, int neg) { - char *buff = luaL_prepbuffsize(b, size); - int i; - buff[islittle ? 0 : size - 1] = (char)(n & MC); /* first byte */ - for (i = 1; i < size; i++) { - n >>= NB; - buff[islittle ? i : size - 1 - i] = (char)(n & MC); - } - if (neg && size > SZINT) { /* negative number need sign extension? */ - for (i = SZINT; i < size; i++) /* correct extra bytes */ - buff[islittle ? i : size - 1 - i] = (char)MC; - } - luaL_addsize(b, size); /* add result to buffer */ -} - - -/* -** Copy 'size' bytes from 'src' to 'dest', correcting endianness if -** given 'islittle' is different from native endianness. -*/ -static void copywithendian (volatile char *dest, volatile const char *src, - int size, int islittle) { - if (islittle == nativeendian.little) { - while (size-- != 0) - *(dest++) = *(src++); - } - else { - dest += size - 1; - while (size-- != 0) - *(dest--) = *(src++); - } -} - - -static int str_pack (lua_State *L) { - luaL_Buffer b; - Header h; - const char *fmt = luaL_checkstring(L, 1); /* format string */ - int arg = 1; /* current argument to pack */ - size_t totalsize = 0; /* accumulate total size of result */ - initheader(L, &h); - lua_pushnil(L); /* mark to separate arguments from string buffer */ - luaL_buffinit(L, &b); - while (*fmt != '\0') { - int size, ntoalign; - KOption opt = getdetails(&h, totalsize, &fmt, &size, &ntoalign); - totalsize += ntoalign + size; - while (ntoalign-- > 0) - luaL_addchar(&b, LUAL_PACKPADBYTE); /* fill alignment */ - arg++; - switch (opt) { - case Kint: { /* signed integers */ - lua_Integer n = luaL_checkinteger(L, arg); - if (size < SZINT) { /* need overflow check? */ - lua_Integer lim = (lua_Integer)1 << ((size * NB) - 1); - luaL_argcheck(L, -lim <= n && n < lim, arg, "integer overflow"); - } - packint(&b, (lua_Unsigned)n, h.islittle, size, (n < 0)); - break; - } - case Kuint: { /* unsigned integers */ - lua_Integer n = luaL_checkinteger(L, arg); - if (size < SZINT) /* need overflow check? */ - luaL_argcheck(L, (lua_Unsigned)n < ((lua_Unsigned)1 << (size * NB)), - arg, "unsigned overflow"); - packint(&b, (lua_Unsigned)n, h.islittle, size, 0); - break; - } - case Kfloat: { /* floating-point options */ - volatile Ftypes u; - char *buff = luaL_prepbuffsize(&b, size); - lua_Number n = luaL_checknumber(L, arg); /* get argument */ - if (size == sizeof(u.f)) u.f = (float)n; /* copy it into 'u' */ - else if (size == sizeof(u.d)) u.d = (double)n; - else u.n = n; - /* move 'u' to final result, correcting endianness if needed */ - copywithendian(buff, u.buff, size, h.islittle); - luaL_addsize(&b, size); - break; - } - case Kchar: { /* fixed-size string */ - size_t len; - const char *s = luaL_checklstring(L, arg, &len); - luaL_argcheck(L, len <= (size_t)size, arg, - "string longer than given size"); - luaL_addlstring(&b, s, len); /* add string */ - while (len++ < (size_t)size) /* pad extra space */ - luaL_addchar(&b, LUAL_PACKPADBYTE); - break; - } - case Kstring: { /* strings with length count */ - size_t len; - const char *s = luaL_checklstring(L, arg, &len); - luaL_argcheck(L, size >= (int)sizeof(size_t) || - len < ((size_t)1 << (size * NB)), - arg, "string length does not fit in given size"); - packint(&b, (lua_Unsigned)len, h.islittle, size, 0); /* pack length */ - luaL_addlstring(&b, s, len); - totalsize += len; - break; - } - case Kzstr: { /* zero-terminated string */ - size_t len; - const char *s = luaL_checklstring(L, arg, &len); - luaL_argcheck(L, strlen(s) == len, arg, "string contains zeros"); - luaL_addlstring(&b, s, len); - luaL_addchar(&b, '\0'); /* add zero at the end */ - totalsize += len + 1; - break; - } - case Kpadding: luaL_addchar(&b, LUAL_PACKPADBYTE); /* FALLTHROUGH */ - case Kpaddalign: case Knop: - arg--; /* undo increment */ - break; - } - } - luaL_pushresult(&b); - return 1; -} - - -static int str_packsize (lua_State *L) { - Header h; - const char *fmt = luaL_checkstring(L, 1); /* format string */ - size_t totalsize = 0; /* accumulate total size of result */ - initheader(L, &h); - while (*fmt != '\0') { - int size, ntoalign; - KOption opt = getdetails(&h, totalsize, &fmt, &size, &ntoalign); - size += ntoalign; /* total space used by option */ - luaL_argcheck(L, totalsize <= MAXSIZE - size, 1, - "format result too large"); - totalsize += size; - switch (opt) { - case Kstring: /* strings with length count */ - case Kzstr: /* zero-terminated string */ - luaL_argerror(L, 1, "variable-length format"); - /* call never return, but to avoid warnings: *//* FALLTHROUGH */ - default: break; - } - } - lua_pushinteger(L, (lua_Integer)totalsize); - return 1; -} - - -/* -** Unpack an integer with 'size' bytes and 'islittle' endianness. -** If size is smaller than the size of a Lua integer and integer -** is signed, must do sign extension (propagating the sign to the -** higher bits); if size is larger than the size of a Lua integer, -** it must check the unread bytes to see whether they do not cause an -** overflow. -*/ -static lua_Integer unpackint (lua_State *L, const char *str, - int islittle, int size, int issigned) { - lua_Unsigned res = 0; - int i; - int limit = (size <= SZINT) ? size : SZINT; - for (i = limit - 1; i >= 0; i--) { - res <<= NB; - res |= (lua_Unsigned)(unsigned char)str[islittle ? i : size - 1 - i]; - } - if (size < SZINT) { /* real size smaller than lua_Integer? */ - if (issigned) { /* needs sign extension? */ - lua_Unsigned mask = (lua_Unsigned)1 << (size*NB - 1); - res = ((res ^ mask) - mask); /* do sign extension */ - } - } - else if (size > SZINT) { /* must check unread bytes */ - int mask = (!issigned || (lua_Integer)res >= 0) ? 0 : MC; - for (i = limit; i < size; i++) { - if ((unsigned char)str[islittle ? i : size - 1 - i] != mask) - luaL_error(L, "%d-byte integer does not fit into Lua Integer", size); - } - } - return (lua_Integer)res; -} - - -static int str_unpack (lua_State *L) { - Header h; - const char *fmt = luaL_checkstring(L, 1); - size_t ld; - const char *data = luaL_checklstring(L, 2, &ld); - size_t pos = (size_t)posrelat(luaL_optinteger(L, 3, 1), ld) - 1; - int n = 0; /* number of results */ - luaL_argcheck(L, pos <= ld, 3, "initial position out of string"); - initheader(L, &h); - while (*fmt != '\0') { - int size, ntoalign; - KOption opt = getdetails(&h, pos, &fmt, &size, &ntoalign); - if ((size_t)ntoalign + size > ~pos || pos + ntoalign + size > ld) - luaL_argerror(L, 2, "data string too short"); - pos += ntoalign; /* skip alignment */ - /* stack space for item + next position */ - luaL_checkstack(L, 2, "too many results"); - n++; - switch (opt) { - case Kint: - case Kuint: { - lua_Integer res = unpackint(L, data + pos, h.islittle, size, - (opt == Kint)); - lua_pushinteger(L, res); - break; - } - case Kfloat: { - volatile Ftypes u; - lua_Number num; - copywithendian(u.buff, data + pos, size, h.islittle); - if (size == sizeof(u.f)) num = (lua_Number)u.f; - else if (size == sizeof(u.d)) num = (lua_Number)u.d; - else num = u.n; - lua_pushnumber(L, num); - break; - } - case Kchar: { - lua_pushlstring(L, data + pos, size); - break; - } - case Kstring: { - size_t len = (size_t)unpackint(L, data + pos, h.islittle, size, 0); - luaL_argcheck(L, pos + len + size <= ld, 2, "data string too short"); - lua_pushlstring(L, data + pos + size, len); - pos += len; /* skip string */ - break; - } - case Kzstr: { - size_t len = (int)strlen(data + pos); - lua_pushlstring(L, data + pos, len); - pos += len + 1; /* skip string plus final '\0' */ - break; - } - case Kpaddalign: case Kpadding: case Knop: - n--; /* undo increment */ - break; - } - pos += size; - } - lua_pushinteger(L, pos + 1); /* next position */ - return n + 1; -} - -/* }====================================================== */ - - -static const luaL_Reg strlib[] = { - {"byte", str_byte}, - {"char", str_char}, - {"dump", str_dump}, - {"find", str_find}, - {"format", str_format}, - {"gmatch", gmatch}, - {"gsub", str_gsub}, - {"len", str_len}, - {"lower", str_lower}, - {"match", str_match}, - {"rep", str_rep}, - {"reverse", str_reverse}, - {"sub", str_sub}, - {"upper", str_upper}, - {"pack", str_pack}, - {"packsize", str_packsize}, - {"unpack", str_unpack}, - {NULL, NULL} -}; - - -static void createmetatable (lua_State *L) { - lua_createtable(L, 0, 1); /* table to be metatable for strings */ - lua_pushliteral(L, ""); /* dummy string */ - lua_pushvalue(L, -2); /* copy table */ - lua_setmetatable(L, -2); /* set table as metatable for strings */ - lua_pop(L, 1); /* pop dummy string */ - lua_pushvalue(L, -2); /* get string library */ - lua_setfield(L, -2, "__index"); /* metatable.__index = string */ - lua_pop(L, 1); /* pop metatable */ -} - - -/* -** Open string library -*/ -LUAMOD_API int luaopen_string (lua_State *L) { - luaL_newlib(L, strlib); - createmetatable(L); - return 1; -} - diff --git a/deps/rcheevos/test/lua/src/ltable.c b/deps/rcheevos/test/lua/src/ltable.c deleted file mode 100644 index d080189f28..0000000000 --- a/deps/rcheevos/test/lua/src/ltable.c +++ /dev/null @@ -1,669 +0,0 @@ -/* -** $Id: ltable.c,v 2.118 2016/11/07 12:38:35 roberto Exp $ -** Lua tables (hash) -** See Copyright Notice in lua.h -*/ - -#define ltable_c -#define LUA_CORE - -#include "lprefix.h" - - -/* -** Implementation of tables (aka arrays, objects, or hash tables). -** Tables keep its elements in two parts: an array part and a hash part. -** Non-negative integer keys are all candidates to be kept in the array -** part. The actual size of the array is the largest 'n' such that -** more than half the slots between 1 and n are in use. -** Hash uses a mix of chained scatter table with Brent's variation. -** A main invariant of these tables is that, if an element is not -** in its main position (i.e. the 'original' position that its hash gives -** to it), then the colliding element is in its own main position. -** Hence even when the load factor reaches 100%, performance remains good. -*/ - -#include -#include - -#include "lua.h" - -#include "ldebug.h" -#include "ldo.h" -#include "lgc.h" -#include "lmem.h" -#include "lobject.h" -#include "lstate.h" -#include "lstring.h" -#include "ltable.h" -#include "lvm.h" - - -/* -** Maximum size of array part (MAXASIZE) is 2^MAXABITS. MAXABITS is -** the largest integer such that MAXASIZE fits in an unsigned int. -*/ -#define MAXABITS cast_int(sizeof(int) * CHAR_BIT - 1) -#define MAXASIZE (1u << MAXABITS) - -/* -** Maximum size of hash part is 2^MAXHBITS. MAXHBITS is the largest -** integer such that 2^MAXHBITS fits in a signed int. (Note that the -** maximum number of elements in a table, 2^MAXABITS + 2^MAXHBITS, still -** fits comfortably in an unsigned int.) -*/ -#define MAXHBITS (MAXABITS - 1) - - -#define hashpow2(t,n) (gnode(t, lmod((n), sizenode(t)))) - -#define hashstr(t,str) hashpow2(t, (str)->hash) -#define hashboolean(t,p) hashpow2(t, p) -#define hashint(t,i) hashpow2(t, i) - - -/* -** for some types, it is better to avoid modulus by power of 2, as -** they tend to have many 2 factors. -*/ -#define hashmod(t,n) (gnode(t, ((n) % ((sizenode(t)-1)|1)))) - - -#define hashpointer(t,p) hashmod(t, point2uint(p)) - - -#define dummynode (&dummynode_) - -static const Node dummynode_ = { - {NILCONSTANT}, /* value */ - {{NILCONSTANT, 0}} /* key */ -}; - - -/* -** Hash for floating-point numbers. -** The main computation should be just -** n = frexp(n, &i); return (n * INT_MAX) + i -** but there are some numerical subtleties. -** In a two-complement representation, INT_MAX does not has an exact -** representation as a float, but INT_MIN does; because the absolute -** value of 'frexp' is smaller than 1 (unless 'n' is inf/NaN), the -** absolute value of the product 'frexp * -INT_MIN' is smaller or equal -** to INT_MAX. Next, the use of 'unsigned int' avoids overflows when -** adding 'i'; the use of '~u' (instead of '-u') avoids problems with -** INT_MIN. -*/ -#if !defined(l_hashfloat) -static int l_hashfloat (lua_Number n) { - int i; - lua_Integer ni; - n = l_mathop(frexp)(n, &i) * -cast_num(INT_MIN); - if (!lua_numbertointeger(n, &ni)) { /* is 'n' inf/-inf/NaN? */ - lua_assert(luai_numisnan(n) || l_mathop(fabs)(n) == cast_num(HUGE_VAL)); - return 0; - } - else { /* normal case */ - unsigned int u = cast(unsigned int, i) + cast(unsigned int, ni); - return cast_int(u <= cast(unsigned int, INT_MAX) ? u : ~u); - } -} -#endif - - -/* -** returns the 'main' position of an element in a table (that is, the index -** of its hash value) -*/ -static Node *mainposition (const Table *t, const TValue *key) { - switch (ttype(key)) { - case LUA_TNUMINT: - return hashint(t, ivalue(key)); - case LUA_TNUMFLT: - return hashmod(t, l_hashfloat(fltvalue(key))); - case LUA_TSHRSTR: - return hashstr(t, tsvalue(key)); - case LUA_TLNGSTR: - return hashpow2(t, luaS_hashlongstr(tsvalue(key))); - case LUA_TBOOLEAN: - return hashboolean(t, bvalue(key)); - case LUA_TLIGHTUSERDATA: - return hashpointer(t, pvalue(key)); - case LUA_TLCF: - return hashpointer(t, fvalue(key)); - default: - lua_assert(!ttisdeadkey(key)); - return hashpointer(t, gcvalue(key)); - } -} - - -/* -** returns the index for 'key' if 'key' is an appropriate key to live in -** the array part of the table, 0 otherwise. -*/ -static unsigned int arrayindex (const TValue *key) { - if (ttisinteger(key)) { - lua_Integer k = ivalue(key); - if (0 < k && (lua_Unsigned)k <= MAXASIZE) - return cast(unsigned int, k); /* 'key' is an appropriate array index */ - } - return 0; /* 'key' did not match some condition */ -} - - -/* -** returns the index of a 'key' for table traversals. First goes all -** elements in the array part, then elements in the hash part. The -** beginning of a traversal is signaled by 0. -*/ -static unsigned int findindex (lua_State *L, Table *t, StkId key) { - unsigned int i; - if (ttisnil(key)) return 0; /* first iteration */ - i = arrayindex(key); - if (i != 0 && i <= t->sizearray) /* is 'key' inside array part? */ - return i; /* yes; that's the index */ - else { - int nx; - Node *n = mainposition(t, key); - for (;;) { /* check whether 'key' is somewhere in the chain */ - /* key may be dead already, but it is ok to use it in 'next' */ - if (luaV_rawequalobj(gkey(n), key) || - (ttisdeadkey(gkey(n)) && iscollectable(key) && - deadvalue(gkey(n)) == gcvalue(key))) { - i = cast_int(n - gnode(t, 0)); /* key index in hash table */ - /* hash elements are numbered after array ones */ - return (i + 1) + t->sizearray; - } - nx = gnext(n); - if (nx == 0) - luaG_runerror(L, "invalid key to 'next'"); /* key not found */ - else n += nx; - } - } -} - - -int luaH_next (lua_State *L, Table *t, StkId key) { - unsigned int i = findindex(L, t, key); /* find original element */ - for (; i < t->sizearray; i++) { /* try first array part */ - if (!ttisnil(&t->array[i])) { /* a non-nil value? */ - setivalue(key, i + 1); - setobj2s(L, key+1, &t->array[i]); - return 1; - } - } - for (i -= t->sizearray; cast_int(i) < sizenode(t); i++) { /* hash part */ - if (!ttisnil(gval(gnode(t, i)))) { /* a non-nil value? */ - setobj2s(L, key, gkey(gnode(t, i))); - setobj2s(L, key+1, gval(gnode(t, i))); - return 1; - } - } - return 0; /* no more elements */ -} - - -/* -** {============================================================= -** Rehash -** ============================================================== -*/ - -/* -** Compute the optimal size for the array part of table 't'. 'nums' is a -** "count array" where 'nums[i]' is the number of integers in the table -** between 2^(i - 1) + 1 and 2^i. 'pna' enters with the total number of -** integer keys in the table and leaves with the number of keys that -** will go to the array part; return the optimal size. -*/ -static unsigned int computesizes (unsigned int nums[], unsigned int *pna) { - int i; - unsigned int twotoi; /* 2^i (candidate for optimal size) */ - unsigned int a = 0; /* number of elements smaller than 2^i */ - unsigned int na = 0; /* number of elements to go to array part */ - unsigned int optimal = 0; /* optimal size for array part */ - /* loop while keys can fill more than half of total size */ - for (i = 0, twotoi = 1; *pna > twotoi / 2; i++, twotoi *= 2) { - if (nums[i] > 0) { - a += nums[i]; - if (a > twotoi/2) { /* more than half elements present? */ - optimal = twotoi; /* optimal size (till now) */ - na = a; /* all elements up to 'optimal' will go to array part */ - } - } - } - lua_assert((optimal == 0 || optimal / 2 < na) && na <= optimal); - *pna = na; - return optimal; -} - - -static int countint (const TValue *key, unsigned int *nums) { - unsigned int k = arrayindex(key); - if (k != 0) { /* is 'key' an appropriate array index? */ - nums[luaO_ceillog2(k)]++; /* count as such */ - return 1; - } - else - return 0; -} - - -/* -** Count keys in array part of table 't': Fill 'nums[i]' with -** number of keys that will go into corresponding slice and return -** total number of non-nil keys. -*/ -static unsigned int numusearray (const Table *t, unsigned int *nums) { - int lg; - unsigned int ttlg; /* 2^lg */ - unsigned int ause = 0; /* summation of 'nums' */ - unsigned int i = 1; /* count to traverse all array keys */ - /* traverse each slice */ - for (lg = 0, ttlg = 1; lg <= MAXABITS; lg++, ttlg *= 2) { - unsigned int lc = 0; /* counter */ - unsigned int lim = ttlg; - if (lim > t->sizearray) { - lim = t->sizearray; /* adjust upper limit */ - if (i > lim) - break; /* no more elements to count */ - } - /* count elements in range (2^(lg - 1), 2^lg] */ - for (; i <= lim; i++) { - if (!ttisnil(&t->array[i-1])) - lc++; - } - nums[lg] += lc; - ause += lc; - } - return ause; -} - - -static int numusehash (const Table *t, unsigned int *nums, unsigned int *pna) { - int totaluse = 0; /* total number of elements */ - int ause = 0; /* elements added to 'nums' (can go to array part) */ - int i = sizenode(t); - while (i--) { - Node *n = &t->node[i]; - if (!ttisnil(gval(n))) { - ause += countint(gkey(n), nums); - totaluse++; - } - } - *pna += ause; - return totaluse; -} - - -static void setarrayvector (lua_State *L, Table *t, unsigned int size) { - unsigned int i; - luaM_reallocvector(L, t->array, t->sizearray, size, TValue); - for (i=t->sizearray; iarray[i]); - t->sizearray = size; -} - - -static void setnodevector (lua_State *L, Table *t, unsigned int size) { - if (size == 0) { /* no elements to hash part? */ - t->node = cast(Node *, dummynode); /* use common 'dummynode' */ - t->lsizenode = 0; - t->lastfree = NULL; /* signal that it is using dummy node */ - } - else { - int i; - int lsize = luaO_ceillog2(size); - if (lsize > MAXHBITS) - luaG_runerror(L, "table overflow"); - size = twoto(lsize); - t->node = luaM_newvector(L, size, Node); - for (i = 0; i < (int)size; i++) { - Node *n = gnode(t, i); - gnext(n) = 0; - setnilvalue(wgkey(n)); - setnilvalue(gval(n)); - } - t->lsizenode = cast_byte(lsize); - t->lastfree = gnode(t, size); /* all positions are free */ - } -} - - -void luaH_resize (lua_State *L, Table *t, unsigned int nasize, - unsigned int nhsize) { - unsigned int i; - int j; - unsigned int oldasize = t->sizearray; - int oldhsize = allocsizenode(t); - Node *nold = t->node; /* save old hash ... */ - if (nasize > oldasize) /* array part must grow? */ - setarrayvector(L, t, nasize); - /* create new hash part with appropriate size */ - setnodevector(L, t, nhsize); - if (nasize < oldasize) { /* array part must shrink? */ - t->sizearray = nasize; - /* re-insert elements from vanishing slice */ - for (i=nasize; iarray[i])) - luaH_setint(L, t, i + 1, &t->array[i]); - } - /* shrink array */ - luaM_reallocvector(L, t->array, oldasize, nasize, TValue); - } - /* re-insert elements from hash part */ - for (j = oldhsize - 1; j >= 0; j--) { - Node *old = nold + j; - if (!ttisnil(gval(old))) { - /* doesn't need barrier/invalidate cache, as entry was - already present in the table */ - setobjt2t(L, luaH_set(L, t, gkey(old)), gval(old)); - } - } - if (oldhsize > 0) /* not the dummy node? */ - luaM_freearray(L, nold, cast(size_t, oldhsize)); /* free old hash */ -} - - -void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize) { - int nsize = allocsizenode(t); - luaH_resize(L, t, nasize, nsize); -} - -/* -** nums[i] = number of keys 'k' where 2^(i - 1) < k <= 2^i -*/ -static void rehash (lua_State *L, Table *t, const TValue *ek) { - unsigned int asize; /* optimal size for array part */ - unsigned int na; /* number of keys in the array part */ - unsigned int nums[MAXABITS + 1]; - int i; - int totaluse; - for (i = 0; i <= MAXABITS; i++) nums[i] = 0; /* reset counts */ - na = numusearray(t, nums); /* count keys in array part */ - totaluse = na; /* all those keys are integer keys */ - totaluse += numusehash(t, nums, &na); /* count keys in hash part */ - /* count extra key */ - na += countint(ek, nums); - totaluse++; - /* compute new size for array part */ - asize = computesizes(nums, &na); - /* resize the table to new computed sizes */ - luaH_resize(L, t, asize, totaluse - na); -} - - - -/* -** }============================================================= -*/ - - -Table *luaH_new (lua_State *L) { - GCObject *o = luaC_newobj(L, LUA_TTABLE, sizeof(Table)); - Table *t = gco2t(o); - t->metatable = NULL; - t->flags = cast_byte(~0); - t->array = NULL; - t->sizearray = 0; - setnodevector(L, t, 0); - return t; -} - - -void luaH_free (lua_State *L, Table *t) { - if (!isdummy(t)) - luaM_freearray(L, t->node, cast(size_t, sizenode(t))); - luaM_freearray(L, t->array, t->sizearray); - luaM_free(L, t); -} - - -static Node *getfreepos (Table *t) { - if (!isdummy(t)) { - while (t->lastfree > t->node) { - t->lastfree--; - if (ttisnil(gkey(t->lastfree))) - return t->lastfree; - } - } - return NULL; /* could not find a free place */ -} - - - -/* -** inserts a new key into a hash table; first, check whether key's main -** position is free. If not, check whether colliding node is in its main -** position or not: if it is not, move colliding node to an empty place and -** put new key in its main position; otherwise (colliding node is in its main -** position), new key goes to an empty position. -*/ -TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key) { - Node *mp; - TValue aux; - if (ttisnil(key)) luaG_runerror(L, "table index is nil"); - else if (ttisfloat(key)) { - lua_Integer k; - if (luaV_tointeger(key, &k, 0)) { /* does index fit in an integer? */ - setivalue(&aux, k); - key = &aux; /* insert it as an integer */ - } - else if (luai_numisnan(fltvalue(key))) - luaG_runerror(L, "table index is NaN"); - } - mp = mainposition(t, key); - if (!ttisnil(gval(mp)) || isdummy(t)) { /* main position is taken? */ - Node *othern; - Node *f = getfreepos(t); /* get a free place */ - if (f == NULL) { /* cannot find a free place? */ - rehash(L, t, key); /* grow table */ - /* whatever called 'newkey' takes care of TM cache */ - return luaH_set(L, t, key); /* insert key into grown table */ - } - lua_assert(!isdummy(t)); - othern = mainposition(t, gkey(mp)); - if (othern != mp) { /* is colliding node out of its main position? */ - /* yes; move colliding node into free position */ - while (othern + gnext(othern) != mp) /* find previous */ - othern += gnext(othern); - gnext(othern) = cast_int(f - othern); /* rechain to point to 'f' */ - *f = *mp; /* copy colliding node into free pos. (mp->next also goes) */ - if (gnext(mp) != 0) { - gnext(f) += cast_int(mp - f); /* correct 'next' */ - gnext(mp) = 0; /* now 'mp' is free */ - } - setnilvalue(gval(mp)); - } - else { /* colliding node is in its own main position */ - /* new node will go into free position */ - if (gnext(mp) != 0) - gnext(f) = cast_int((mp + gnext(mp)) - f); /* chain new position */ - else lua_assert(gnext(f) == 0); - gnext(mp) = cast_int(f - mp); - mp = f; - } - } - setnodekey(L, &mp->i_key, key); - luaC_barrierback(L, t, key); - lua_assert(ttisnil(gval(mp))); - return gval(mp); -} - - -/* -** search function for integers -*/ -const TValue *luaH_getint (Table *t, lua_Integer key) { - /* (1 <= key && key <= t->sizearray) */ - if (l_castS2U(key) - 1 < t->sizearray) - return &t->array[key - 1]; - else { - Node *n = hashint(t, key); - for (;;) { /* check whether 'key' is somewhere in the chain */ - if (ttisinteger(gkey(n)) && ivalue(gkey(n)) == key) - return gval(n); /* that's it */ - else { - int nx = gnext(n); - if (nx == 0) break; - n += nx; - } - } - return luaO_nilobject; - } -} - - -/* -** search function for short strings -*/ -const TValue *luaH_getshortstr (Table *t, TString *key) { - Node *n = hashstr(t, key); - lua_assert(key->tt == LUA_TSHRSTR); - for (;;) { /* check whether 'key' is somewhere in the chain */ - const TValue *k = gkey(n); - if (ttisshrstring(k) && eqshrstr(tsvalue(k), key)) - return gval(n); /* that's it */ - else { - int nx = gnext(n); - if (nx == 0) - return luaO_nilobject; /* not found */ - n += nx; - } - } -} - - -/* -** "Generic" get version. (Not that generic: not valid for integers, -** which may be in array part, nor for floats with integral values.) -*/ -static const TValue *getgeneric (Table *t, const TValue *key) { - Node *n = mainposition(t, key); - for (;;) { /* check whether 'key' is somewhere in the chain */ - if (luaV_rawequalobj(gkey(n), key)) - return gval(n); /* that's it */ - else { - int nx = gnext(n); - if (nx == 0) - return luaO_nilobject; /* not found */ - n += nx; - } - } -} - - -const TValue *luaH_getstr (Table *t, TString *key) { - if (key->tt == LUA_TSHRSTR) - return luaH_getshortstr(t, key); - else { /* for long strings, use generic case */ - TValue ko; - setsvalue(cast(lua_State *, NULL), &ko, key); - return getgeneric(t, &ko); - } -} - - -/* -** main search function -*/ -const TValue *luaH_get (Table *t, const TValue *key) { - switch (ttype(key)) { - case LUA_TSHRSTR: return luaH_getshortstr(t, tsvalue(key)); - case LUA_TNUMINT: return luaH_getint(t, ivalue(key)); - case LUA_TNIL: return luaO_nilobject; - case LUA_TNUMFLT: { - lua_Integer k; - if (luaV_tointeger(key, &k, 0)) /* index is int? */ - return luaH_getint(t, k); /* use specialized version */ - /* else... */ - } /* FALLTHROUGH */ - default: - return getgeneric(t, key); - } -} - - -/* -** beware: when using this function you probably need to check a GC -** barrier and invalidate the TM cache. -*/ -TValue *luaH_set (lua_State *L, Table *t, const TValue *key) { - const TValue *p = luaH_get(t, key); - if (p != luaO_nilobject) - return cast(TValue *, p); - else return luaH_newkey(L, t, key); -} - - -void luaH_setint (lua_State *L, Table *t, lua_Integer key, TValue *value) { - const TValue *p = luaH_getint(t, key); - TValue *cell; - if (p != luaO_nilobject) - cell = cast(TValue *, p); - else { - TValue k; - setivalue(&k, key); - cell = luaH_newkey(L, t, &k); - } - setobj2t(L, cell, value); -} - - -static int unbound_search (Table *t, unsigned int j) { - unsigned int i = j; /* i is zero or a present index */ - j++; - /* find 'i' and 'j' such that i is present and j is not */ - while (!ttisnil(luaH_getint(t, j))) { - i = j; - if (j > cast(unsigned int, MAX_INT)/2) { /* overflow? */ - /* table was built with bad purposes: resort to linear search */ - i = 1; - while (!ttisnil(luaH_getint(t, i))) i++; - return i - 1; - } - j *= 2; - } - /* now do a binary search between them */ - while (j - i > 1) { - unsigned int m = (i+j)/2; - if (ttisnil(luaH_getint(t, m))) j = m; - else i = m; - } - return i; -} - - -/* -** Try to find a boundary in table 't'. A 'boundary' is an integer index -** such that t[i] is non-nil and t[i+1] is nil (and 0 if t[1] is nil). -*/ -int luaH_getn (Table *t) { - unsigned int j = t->sizearray; - if (j > 0 && ttisnil(&t->array[j - 1])) { - /* there is a boundary in the array part: (binary) search for it */ - unsigned int i = 0; - while (j - i > 1) { - unsigned int m = (i+j)/2; - if (ttisnil(&t->array[m - 1])) j = m; - else i = m; - } - return i; - } - /* else must find a boundary in hash part */ - else if (isdummy(t)) /* hash part is empty? */ - return j; /* that is easy... */ - else return unbound_search(t, j); -} - - - -#if defined(LUA_DEBUG) - -Node *luaH_mainposition (const Table *t, const TValue *key) { - return mainposition(t, key); -} - -int luaH_isdummy (const Table *t) { return isdummy(t); } - -#endif diff --git a/deps/rcheevos/test/lua/src/ltable.h b/deps/rcheevos/test/lua/src/ltable.h deleted file mode 100644 index 6da9024fe1..0000000000 --- a/deps/rcheevos/test/lua/src/ltable.h +++ /dev/null @@ -1,66 +0,0 @@ -/* -** $Id: ltable.h,v 2.23 2016/12/22 13:08:50 roberto Exp $ -** Lua tables (hash) -** See Copyright Notice in lua.h -*/ - -#ifndef ltable_h -#define ltable_h - -#include "lobject.h" - - -#define gnode(t,i) (&(t)->node[i]) -#define gval(n) (&(n)->i_val) -#define gnext(n) ((n)->i_key.nk.next) - - -/* 'const' to avoid wrong writings that can mess up field 'next' */ -#define gkey(n) cast(const TValue*, (&(n)->i_key.tvk)) - -/* -** writable version of 'gkey'; allows updates to individual fields, -** but not to the whole (which has incompatible type) -*/ -#define wgkey(n) (&(n)->i_key.nk) - -#define invalidateTMcache(t) ((t)->flags = 0) - - -/* true when 't' is using 'dummynode' as its hash part */ -#define isdummy(t) ((t)->lastfree == NULL) - - -/* allocated size for hash nodes */ -#define allocsizenode(t) (isdummy(t) ? 0 : sizenode(t)) - - -/* returns the key, given the value of a table entry */ -#define keyfromval(v) \ - (gkey(cast(Node *, cast(char *, (v)) - offsetof(Node, i_val)))) - - -LUAI_FUNC const TValue *luaH_getint (Table *t, lua_Integer key); -LUAI_FUNC void luaH_setint (lua_State *L, Table *t, lua_Integer key, - TValue *value); -LUAI_FUNC const TValue *luaH_getshortstr (Table *t, TString *key); -LUAI_FUNC const TValue *luaH_getstr (Table *t, TString *key); -LUAI_FUNC const TValue *luaH_get (Table *t, const TValue *key); -LUAI_FUNC TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key); -LUAI_FUNC TValue *luaH_set (lua_State *L, Table *t, const TValue *key); -LUAI_FUNC Table *luaH_new (lua_State *L); -LUAI_FUNC void luaH_resize (lua_State *L, Table *t, unsigned int nasize, - unsigned int nhsize); -LUAI_FUNC void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize); -LUAI_FUNC void luaH_free (lua_State *L, Table *t); -LUAI_FUNC int luaH_next (lua_State *L, Table *t, StkId key); -LUAI_FUNC int luaH_getn (Table *t); - - -#if defined(LUA_DEBUG) -LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key); -LUAI_FUNC int luaH_isdummy (const Table *t); -#endif - - -#endif diff --git a/deps/rcheevos/test/lua/src/ltablib.c b/deps/rcheevos/test/lua/src/ltablib.c deleted file mode 100644 index 98b2f87137..0000000000 --- a/deps/rcheevos/test/lua/src/ltablib.c +++ /dev/null @@ -1,450 +0,0 @@ -/* -** $Id: ltablib.c,v 1.93 2016/02/25 19:41:54 roberto Exp $ -** Library for Table Manipulation -** See Copyright Notice in lua.h -*/ - -#define ltablib_c -#define LUA_LIB - -#include "lprefix.h" - - -#include -#include -#include - -#include "lua.h" - -#include "lauxlib.h" -#include "lualib.h" - - -/* -** Operations that an object must define to mimic a table -** (some functions only need some of them) -*/ -#define TAB_R 1 /* read */ -#define TAB_W 2 /* write */ -#define TAB_L 4 /* length */ -#define TAB_RW (TAB_R | TAB_W) /* read/write */ - - -#define aux_getn(L,n,w) (checktab(L, n, (w) | TAB_L), luaL_len(L, n)) - - -static int checkfield (lua_State *L, const char *key, int n) { - lua_pushstring(L, key); - return (lua_rawget(L, -n) != LUA_TNIL); -} - - -/* -** Check that 'arg' either is a table or can behave like one (that is, -** has a metatable with the required metamethods) -*/ -static void checktab (lua_State *L, int arg, int what) { - if (lua_type(L, arg) != LUA_TTABLE) { /* is it not a table? */ - int n = 1; /* number of elements to pop */ - if (lua_getmetatable(L, arg) && /* must have metatable */ - (!(what & TAB_R) || checkfield(L, "__index", ++n)) && - (!(what & TAB_W) || checkfield(L, "__newindex", ++n)) && - (!(what & TAB_L) || checkfield(L, "__len", ++n))) { - lua_pop(L, n); /* pop metatable and tested metamethods */ - } - else - luaL_checktype(L, arg, LUA_TTABLE); /* force an error */ - } -} - - -#if defined(LUA_COMPAT_MAXN) -static int maxn (lua_State *L) { - lua_Number max = 0; - luaL_checktype(L, 1, LUA_TTABLE); - lua_pushnil(L); /* first key */ - while (lua_next(L, 1)) { - lua_pop(L, 1); /* remove value */ - if (lua_type(L, -1) == LUA_TNUMBER) { - lua_Number v = lua_tonumber(L, -1); - if (v > max) max = v; - } - } - lua_pushnumber(L, max); - return 1; -} -#endif - - -static int tinsert (lua_State *L) { - lua_Integer e = aux_getn(L, 1, TAB_RW) + 1; /* first empty element */ - lua_Integer pos; /* where to insert new element */ - switch (lua_gettop(L)) { - case 2: { /* called with only 2 arguments */ - pos = e; /* insert new element at the end */ - break; - } - case 3: { - lua_Integer i; - pos = luaL_checkinteger(L, 2); /* 2nd argument is the position */ - luaL_argcheck(L, 1 <= pos && pos <= e, 2, "position out of bounds"); - for (i = e; i > pos; i--) { /* move up elements */ - lua_geti(L, 1, i - 1); - lua_seti(L, 1, i); /* t[i] = t[i - 1] */ - } - break; - } - default: { - return luaL_error(L, "wrong number of arguments to 'insert'"); - } - } - lua_seti(L, 1, pos); /* t[pos] = v */ - return 0; -} - - -static int tremove (lua_State *L) { - lua_Integer size = aux_getn(L, 1, TAB_RW); - lua_Integer pos = luaL_optinteger(L, 2, size); - if (pos != size) /* validate 'pos' if given */ - luaL_argcheck(L, 1 <= pos && pos <= size + 1, 1, "position out of bounds"); - lua_geti(L, 1, pos); /* result = t[pos] */ - for ( ; pos < size; pos++) { - lua_geti(L, 1, pos + 1); - lua_seti(L, 1, pos); /* t[pos] = t[pos + 1] */ - } - lua_pushnil(L); - lua_seti(L, 1, pos); /* t[pos] = nil */ - return 1; -} - - -/* -** Copy elements (1[f], ..., 1[e]) into (tt[t], tt[t+1], ...). Whenever -** possible, copy in increasing order, which is better for rehashing. -** "possible" means destination after original range, or smaller -** than origin, or copying to another table. -*/ -static int tmove (lua_State *L) { - lua_Integer f = luaL_checkinteger(L, 2); - lua_Integer e = luaL_checkinteger(L, 3); - lua_Integer t = luaL_checkinteger(L, 4); - int tt = !lua_isnoneornil(L, 5) ? 5 : 1; /* destination table */ - checktab(L, 1, TAB_R); - checktab(L, tt, TAB_W); - if (e >= f) { /* otherwise, nothing to move */ - lua_Integer n, i; - luaL_argcheck(L, f > 0 || e < LUA_MAXINTEGER + f, 3, - "too many elements to move"); - n = e - f + 1; /* number of elements to move */ - luaL_argcheck(L, t <= LUA_MAXINTEGER - n + 1, 4, - "destination wrap around"); - if (t > e || t <= f || (tt != 1 && !lua_compare(L, 1, tt, LUA_OPEQ))) { - for (i = 0; i < n; i++) { - lua_geti(L, 1, f + i); - lua_seti(L, tt, t + i); - } - } - else { - for (i = n - 1; i >= 0; i--) { - lua_geti(L, 1, f + i); - lua_seti(L, tt, t + i); - } - } - } - lua_pushvalue(L, tt); /* return destination table */ - return 1; -} - - -static void addfield (lua_State *L, luaL_Buffer *b, lua_Integer i) { - lua_geti(L, 1, i); - if (!lua_isstring(L, -1)) - luaL_error(L, "invalid value (%s) at index %d in table for 'concat'", - luaL_typename(L, -1), i); - luaL_addvalue(b); -} - - -static int tconcat (lua_State *L) { - luaL_Buffer b; - lua_Integer last = aux_getn(L, 1, TAB_R); - size_t lsep; - const char *sep = luaL_optlstring(L, 2, "", &lsep); - lua_Integer i = luaL_optinteger(L, 3, 1); - last = luaL_optinteger(L, 4, last); - luaL_buffinit(L, &b); - for (; i < last; i++) { - addfield(L, &b, i); - luaL_addlstring(&b, sep, lsep); - } - if (i == last) /* add last value (if interval was not empty) */ - addfield(L, &b, i); - luaL_pushresult(&b); - return 1; -} - - -/* -** {====================================================== -** Pack/unpack -** ======================================================= -*/ - -static int pack (lua_State *L) { - int i; - int n = lua_gettop(L); /* number of elements to pack */ - lua_createtable(L, n, 1); /* create result table */ - lua_insert(L, 1); /* put it at index 1 */ - for (i = n; i >= 1; i--) /* assign elements */ - lua_seti(L, 1, i); - lua_pushinteger(L, n); - lua_setfield(L, 1, "n"); /* t.n = number of elements */ - return 1; /* return table */ -} - - -static int unpack (lua_State *L) { - lua_Unsigned n; - lua_Integer i = luaL_optinteger(L, 2, 1); - lua_Integer e = luaL_opt(L, luaL_checkinteger, 3, luaL_len(L, 1)); - if (i > e) return 0; /* empty range */ - n = (lua_Unsigned)e - i; /* number of elements minus 1 (avoid overflows) */ - if (n >= (unsigned int)INT_MAX || !lua_checkstack(L, (int)(++n))) - return luaL_error(L, "too many results to unpack"); - for (; i < e; i++) { /* push arg[i..e - 1] (to avoid overflows) */ - lua_geti(L, 1, i); - } - lua_geti(L, 1, e); /* push last element */ - return (int)n; -} - -/* }====================================================== */ - - - -/* -** {====================================================== -** Quicksort -** (based on 'Algorithms in MODULA-3', Robert Sedgewick; -** Addison-Wesley, 1993.) -** ======================================================= -*/ - - -/* type for array indices */ -typedef unsigned int IdxT; - - -/* -** Produce a "random" 'unsigned int' to randomize pivot choice. This -** macro is used only when 'sort' detects a big imbalance in the result -** of a partition. (If you don't want/need this "randomness", ~0 is a -** good choice.) -*/ -#if !defined(l_randomizePivot) /* { */ - -#include - -/* size of 'e' measured in number of 'unsigned int's */ -#define sof(e) (sizeof(e) / sizeof(unsigned int)) - -/* -** Use 'time' and 'clock' as sources of "randomness". Because we don't -** know the types 'clock_t' and 'time_t', we cannot cast them to -** anything without risking overflows. A safe way to use their values -** is to copy them to an array of a known type and use the array values. -*/ -static unsigned int l_randomizePivot (void) { - clock_t c = clock(); - time_t t = time(NULL); - unsigned int buff[sof(c) + sof(t)]; - unsigned int i, rnd = 0; - memcpy(buff, &c, sof(c) * sizeof(unsigned int)); - memcpy(buff + sof(c), &t, sof(t) * sizeof(unsigned int)); - for (i = 0; i < sof(buff); i++) - rnd += buff[i]; - return rnd; -} - -#endif /* } */ - - -/* arrays larger than 'RANLIMIT' may use randomized pivots */ -#define RANLIMIT 100u - - -static void set2 (lua_State *L, IdxT i, IdxT j) { - lua_seti(L, 1, i); - lua_seti(L, 1, j); -} - - -/* -** Return true iff value at stack index 'a' is less than the value at -** index 'b' (according to the order of the sort). -*/ -static int sort_comp (lua_State *L, int a, int b) { - if (lua_isnil(L, 2)) /* no function? */ - return lua_compare(L, a, b, LUA_OPLT); /* a < b */ - else { /* function */ - int res; - lua_pushvalue(L, 2); /* push function */ - lua_pushvalue(L, a-1); /* -1 to compensate function */ - lua_pushvalue(L, b-2); /* -2 to compensate function and 'a' */ - lua_call(L, 2, 1); /* call function */ - res = lua_toboolean(L, -1); /* get result */ - lua_pop(L, 1); /* pop result */ - return res; - } -} - - -/* -** Does the partition: Pivot P is at the top of the stack. -** precondition: a[lo] <= P == a[up-1] <= a[up], -** so it only needs to do the partition from lo + 1 to up - 2. -** Pos-condition: a[lo .. i - 1] <= a[i] == P <= a[i + 1 .. up] -** returns 'i'. -*/ -static IdxT partition (lua_State *L, IdxT lo, IdxT up) { - IdxT i = lo; /* will be incremented before first use */ - IdxT j = up - 1; /* will be decremented before first use */ - /* loop invariant: a[lo .. i] <= P <= a[j .. up] */ - for (;;) { - /* next loop: repeat ++i while a[i] < P */ - while (lua_geti(L, 1, ++i), sort_comp(L, -1, -2)) { - if (i == up - 1) /* a[i] < P but a[up - 1] == P ?? */ - luaL_error(L, "invalid order function for sorting"); - lua_pop(L, 1); /* remove a[i] */ - } - /* after the loop, a[i] >= P and a[lo .. i - 1] < P */ - /* next loop: repeat --j while P < a[j] */ - while (lua_geti(L, 1, --j), sort_comp(L, -3, -1)) { - if (j < i) /* j < i but a[j] > P ?? */ - luaL_error(L, "invalid order function for sorting"); - lua_pop(L, 1); /* remove a[j] */ - } - /* after the loop, a[j] <= P and a[j + 1 .. up] >= P */ - if (j < i) { /* no elements out of place? */ - /* a[lo .. i - 1] <= P <= a[j + 1 .. i .. up] */ - lua_pop(L, 1); /* pop a[j] */ - /* swap pivot (a[up - 1]) with a[i] to satisfy pos-condition */ - set2(L, up - 1, i); - return i; - } - /* otherwise, swap a[i] - a[j] to restore invariant and repeat */ - set2(L, i, j); - } -} - - -/* -** Choose an element in the middle (2nd-3th quarters) of [lo,up] -** "randomized" by 'rnd' -*/ -static IdxT choosePivot (IdxT lo, IdxT up, unsigned int rnd) { - IdxT r4 = (up - lo) / 4; /* range/4 */ - IdxT p = rnd % (r4 * 2) + (lo + r4); - lua_assert(lo + r4 <= p && p <= up - r4); - return p; -} - - -/* -** QuickSort algorithm (recursive function) -*/ -static void auxsort (lua_State *L, IdxT lo, IdxT up, - unsigned int rnd) { - while (lo < up) { /* loop for tail recursion */ - IdxT p; /* Pivot index */ - IdxT n; /* to be used later */ - /* sort elements 'lo', 'p', and 'up' */ - lua_geti(L, 1, lo); - lua_geti(L, 1, up); - if (sort_comp(L, -1, -2)) /* a[up] < a[lo]? */ - set2(L, lo, up); /* swap a[lo] - a[up] */ - else - lua_pop(L, 2); /* remove both values */ - if (up - lo == 1) /* only 2 elements? */ - return; /* already sorted */ - if (up - lo < RANLIMIT || rnd == 0) /* small interval or no randomize? */ - p = (lo + up)/2; /* middle element is a good pivot */ - else /* for larger intervals, it is worth a random pivot */ - p = choosePivot(lo, up, rnd); - lua_geti(L, 1, p); - lua_geti(L, 1, lo); - if (sort_comp(L, -2, -1)) /* a[p] < a[lo]? */ - set2(L, p, lo); /* swap a[p] - a[lo] */ - else { - lua_pop(L, 1); /* remove a[lo] */ - lua_geti(L, 1, up); - if (sort_comp(L, -1, -2)) /* a[up] < a[p]? */ - set2(L, p, up); /* swap a[up] - a[p] */ - else - lua_pop(L, 2); - } - if (up - lo == 2) /* only 3 elements? */ - return; /* already sorted */ - lua_geti(L, 1, p); /* get middle element (Pivot) */ - lua_pushvalue(L, -1); /* push Pivot */ - lua_geti(L, 1, up - 1); /* push a[up - 1] */ - set2(L, p, up - 1); /* swap Pivot (a[p]) with a[up - 1] */ - p = partition(L, lo, up); - /* a[lo .. p - 1] <= a[p] == P <= a[p + 1 .. up] */ - if (p - lo < up - p) { /* lower interval is smaller? */ - auxsort(L, lo, p - 1, rnd); /* call recursively for lower interval */ - n = p - lo; /* size of smaller interval */ - lo = p + 1; /* tail call for [p + 1 .. up] (upper interval) */ - } - else { - auxsort(L, p + 1, up, rnd); /* call recursively for upper interval */ - n = up - p; /* size of smaller interval */ - up = p - 1; /* tail call for [lo .. p - 1] (lower interval) */ - } - if ((up - lo) / 128 > n) /* partition too imbalanced? */ - rnd = l_randomizePivot(); /* try a new randomization */ - } /* tail call auxsort(L, lo, up, rnd) */ -} - - -static int sort (lua_State *L) { - lua_Integer n = aux_getn(L, 1, TAB_RW); - if (n > 1) { /* non-trivial interval? */ - luaL_argcheck(L, n < INT_MAX, 1, "array too big"); - if (!lua_isnoneornil(L, 2)) /* is there a 2nd argument? */ - luaL_checktype(L, 2, LUA_TFUNCTION); /* must be a function */ - lua_settop(L, 2); /* make sure there are two arguments */ - auxsort(L, 1, (IdxT)n, 0); - } - return 0; -} - -/* }====================================================== */ - - -static const luaL_Reg tab_funcs[] = { - {"concat", tconcat}, -#if defined(LUA_COMPAT_MAXN) - {"maxn", maxn}, -#endif - {"insert", tinsert}, - {"pack", pack}, - {"unpack", unpack}, - {"remove", tremove}, - {"move", tmove}, - {"sort", sort}, - {NULL, NULL} -}; - - -LUAMOD_API int luaopen_table (lua_State *L) { - luaL_newlib(L, tab_funcs); -#if defined(LUA_COMPAT_UNPACK) - /* _G.unpack = table.unpack */ - lua_getfield(L, -1, "unpack"); - lua_setglobal(L, "unpack"); -#endif - return 1; -} - diff --git a/deps/rcheevos/test/lua/src/ltm.c b/deps/rcheevos/test/lua/src/ltm.c deleted file mode 100644 index bc8f64eb31..0000000000 --- a/deps/rcheevos/test/lua/src/ltm.c +++ /dev/null @@ -1,165 +0,0 @@ -/* -** $Id: ltm.c,v 2.38 2016/12/22 13:08:50 roberto Exp $ -** Tag methods -** See Copyright Notice in lua.h -*/ - -#define ltm_c -#define LUA_CORE - -#include "lprefix.h" - - -#include - -#include "lua.h" - -#include "ldebug.h" -#include "ldo.h" -#include "lobject.h" -#include "lstate.h" -#include "lstring.h" -#include "ltable.h" -#include "ltm.h" -#include "lvm.h" - - -static const char udatatypename[] = "userdata"; - -LUAI_DDEF const char *const luaT_typenames_[LUA_TOTALTAGS] = { - "no value", - "nil", "boolean", udatatypename, "number", - "string", "table", "function", udatatypename, "thread", - "proto" /* this last case is used for tests only */ -}; - - -void luaT_init (lua_State *L) { - static const char *const luaT_eventname[] = { /* ORDER TM */ - "__index", "__newindex", - "__gc", "__mode", "__len", "__eq", - "__add", "__sub", "__mul", "__mod", "__pow", - "__div", "__idiv", - "__band", "__bor", "__bxor", "__shl", "__shr", - "__unm", "__bnot", "__lt", "__le", - "__concat", "__call" - }; - int i; - for (i=0; itmname[i] = luaS_new(L, luaT_eventname[i]); - luaC_fix(L, obj2gco(G(L)->tmname[i])); /* never collect these names */ - } -} - - -/* -** function to be used with macro "fasttm": optimized for absence of -** tag methods -*/ -const TValue *luaT_gettm (Table *events, TMS event, TString *ename) { - const TValue *tm = luaH_getshortstr(events, ename); - lua_assert(event <= TM_EQ); - if (ttisnil(tm)) { /* no tag method? */ - events->flags |= cast_byte(1u<metatable; - break; - case LUA_TUSERDATA: - mt = uvalue(o)->metatable; - break; - default: - mt = G(L)->mt[ttnov(o)]; - } - return (mt ? luaH_getshortstr(mt, G(L)->tmname[event]) : luaO_nilobject); -} - - -/* -** Return the name of the type of an object. For tables and userdata -** with metatable, use their '__name' metafield, if present. -*/ -const char *luaT_objtypename (lua_State *L, const TValue *o) { - Table *mt; - if ((ttistable(o) && (mt = hvalue(o)->metatable) != NULL) || - (ttisfulluserdata(o) && (mt = uvalue(o)->metatable) != NULL)) { - const TValue *name = luaH_getshortstr(mt, luaS_new(L, "__name")); - if (ttisstring(name)) /* is '__name' a string? */ - return getstr(tsvalue(name)); /* use it as type name */ - } - return ttypename(ttnov(o)); /* else use standard type name */ -} - - -void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1, - const TValue *p2, TValue *p3, int hasres) { - ptrdiff_t result = savestack(L, p3); - StkId func = L->top; - setobj2s(L, func, f); /* push function (assume EXTRC_STACK) */ - setobj2s(L, func + 1, p1); /* 1st argument */ - setobj2s(L, func + 2, p2); /* 2nd argument */ - L->top += 3; - if (!hasres) /* no result? 'p3' is third argument */ - setobj2s(L, L->top++, p3); /* 3rd argument */ - /* metamethod may yield only when called from Lua code */ - if (isLua(L->ci)) - luaD_call(L, func, hasres); - else - luaD_callnoyield(L, func, hasres); - if (hasres) { /* if has result, move it to its place */ - p3 = restorestack(L, result); - setobjs2s(L, p3, --L->top); - } -} - - -int luaT_callbinTM (lua_State *L, const TValue *p1, const TValue *p2, - StkId res, TMS event) { - const TValue *tm = luaT_gettmbyobj(L, p1, event); /* try first operand */ - if (ttisnil(tm)) - tm = luaT_gettmbyobj(L, p2, event); /* try second operand */ - if (ttisnil(tm)) return 0; - luaT_callTM(L, tm, p1, p2, res, 1); - return 1; -} - - -void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2, - StkId res, TMS event) { - if (!luaT_callbinTM(L, p1, p2, res, event)) { - switch (event) { - case TM_CONCAT: - luaG_concaterror(L, p1, p2); - /* call never returns, but to avoid warnings: *//* FALLTHROUGH */ - case TM_BAND: case TM_BOR: case TM_BXOR: - case TM_SHL: case TM_SHR: case TM_BNOT: { - lua_Number dummy; - if (tonumber(p1, &dummy) && tonumber(p2, &dummy)) - luaG_tointerror(L, p1, p2); - else - luaG_opinterror(L, p1, p2, "perform bitwise operation on"); - } - /* calls never return, but to avoid warnings: *//* FALLTHROUGH */ - default: - luaG_opinterror(L, p1, p2, "perform arithmetic on"); - } - } -} - - -int luaT_callorderTM (lua_State *L, const TValue *p1, const TValue *p2, - TMS event) { - if (!luaT_callbinTM(L, p1, p2, L->top, event)) - return -1; /* no metamethod */ - else - return !l_isfalse(L->top); -} - diff --git a/deps/rcheevos/test/lua/src/ltm.h b/deps/rcheevos/test/lua/src/ltm.h deleted file mode 100644 index 63db7269bb..0000000000 --- a/deps/rcheevos/test/lua/src/ltm.h +++ /dev/null @@ -1,76 +0,0 @@ -/* -** $Id: ltm.h,v 2.22 2016/02/26 19:20:15 roberto Exp $ -** Tag methods -** See Copyright Notice in lua.h -*/ - -#ifndef ltm_h -#define ltm_h - - -#include "lobject.h" - - -/* -* WARNING: if you change the order of this enumeration, -* grep "ORDER TM" and "ORDER OP" -*/ -typedef enum { - TM_INDEX, - TM_NEWINDEX, - TM_GC, - TM_MODE, - TM_LEN, - TM_EQ, /* last tag method with fast access */ - TM_ADD, - TM_SUB, - TM_MUL, - TM_MOD, - TM_POW, - TM_DIV, - TM_IDIV, - TM_BAND, - TM_BOR, - TM_BXOR, - TM_SHL, - TM_SHR, - TM_UNM, - TM_BNOT, - TM_LT, - TM_LE, - TM_CONCAT, - TM_CALL, - TM_N /* number of elements in the enum */ -} TMS; - - - -#define gfasttm(g,et,e) ((et) == NULL ? NULL : \ - ((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, (g)->tmname[e])) - -#define fasttm(l,et,e) gfasttm(G(l), et, e) - -#define ttypename(x) luaT_typenames_[(x) + 1] - -LUAI_DDEC const char *const luaT_typenames_[LUA_TOTALTAGS]; - - -LUAI_FUNC const char *luaT_objtypename (lua_State *L, const TValue *o); - -LUAI_FUNC const TValue *luaT_gettm (Table *events, TMS event, TString *ename); -LUAI_FUNC const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, - TMS event); -LUAI_FUNC void luaT_init (lua_State *L); - -LUAI_FUNC void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1, - const TValue *p2, TValue *p3, int hasres); -LUAI_FUNC int luaT_callbinTM (lua_State *L, const TValue *p1, const TValue *p2, - StkId res, TMS event); -LUAI_FUNC void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2, - StkId res, TMS event); -LUAI_FUNC int luaT_callorderTM (lua_State *L, const TValue *p1, - const TValue *p2, TMS event); - - - -#endif diff --git a/deps/rcheevos/test/lua/src/lua.c b/deps/rcheevos/test/lua/src/lua.c deleted file mode 100644 index 3f082da6be..0000000000 --- a/deps/rcheevos/test/lua/src/lua.c +++ /dev/null @@ -1,612 +0,0 @@ -/* -** $Id: lua.c,v 1.230 2017/01/12 17:14:26 roberto Exp $ -** Lua stand-alone interpreter -** See Copyright Notice in lua.h -*/ - -#define lua_c - -#include "lprefix.h" - - -#include -#include -#include -#include - -#include "lua.h" - -#include "lauxlib.h" -#include "lualib.h" - - - -#if !defined(LUA_PROMPT) -#define LUA_PROMPT "> " -#define LUA_PROMPT2 ">> " -#endif - -#if !defined(LUA_PROGNAME) -#define LUA_PROGNAME "lua" -#endif - -#if !defined(LUA_MAXINPUT) -#define LUA_MAXINPUT 512 -#endif - -#if !defined(LUA_INIT_VAR) -#define LUA_INIT_VAR "LUA_INIT" -#endif - -#define LUA_INITVARVERSION LUA_INIT_VAR LUA_VERSUFFIX - - -/* -** lua_stdin_is_tty detects whether the standard input is a 'tty' (that -** is, whether we're running lua interactively). -*/ -#if !defined(lua_stdin_is_tty) /* { */ - -#if defined(LUA_USE_POSIX) /* { */ - -#include -#define lua_stdin_is_tty() isatty(0) - -#elif defined(LUA_USE_WINDOWS) /* }{ */ - -#include -#include - -#define lua_stdin_is_tty() _isatty(_fileno(stdin)) - -#else /* }{ */ - -/* ISO C definition */ -#define lua_stdin_is_tty() 1 /* assume stdin is a tty */ - -#endif /* } */ - -#endif /* } */ - - -/* -** lua_readline defines how to show a prompt and then read a line from -** the standard input. -** lua_saveline defines how to "save" a read line in a "history". -** lua_freeline defines how to free a line read by lua_readline. -*/ -#if !defined(lua_readline) /* { */ - -#if defined(LUA_USE_READLINE) /* { */ - -#include -#include -#define lua_readline(L,b,p) ((void)L, ((b)=readline(p)) != NULL) -#define lua_saveline(L,line) ((void)L, add_history(line)) -#define lua_freeline(L,b) ((void)L, free(b)) - -#else /* }{ */ - -#define lua_readline(L,b,p) \ - ((void)L, fputs(p, stdout), fflush(stdout), /* show prompt */ \ - fgets(b, LUA_MAXINPUT, stdin) != NULL) /* get line */ -#define lua_saveline(L,line) { (void)L; (void)line; } -#define lua_freeline(L,b) { (void)L; (void)b; } - -#endif /* } */ - -#endif /* } */ - - - - -static lua_State *globalL = NULL; - -static const char *progname = LUA_PROGNAME; - - -/* -** Hook set by signal function to stop the interpreter. -*/ -static void lstop (lua_State *L, lua_Debug *ar) { - (void)ar; /* unused arg. */ - lua_sethook(L, NULL, 0, 0); /* reset hook */ - luaL_error(L, "interrupted!"); -} - - -/* -** Function to be called at a C signal. Because a C signal cannot -** just change a Lua state (as there is no proper synchronization), -** this function only sets a hook that, when called, will stop the -** interpreter. -*/ -static void laction (int i) { - signal(i, SIG_DFL); /* if another SIGINT happens, terminate process */ - lua_sethook(globalL, lstop, LUA_MASKCALL | LUA_MASKRET | LUA_MASKCOUNT, 1); -} - - -static void print_usage (const char *badoption) { - lua_writestringerror("%s: ", progname); - if (badoption[1] == 'e' || badoption[1] == 'l') - lua_writestringerror("'%s' needs argument\n", badoption); - else - lua_writestringerror("unrecognized option '%s'\n", badoption); - lua_writestringerror( - "usage: %s [options] [script [args]]\n" - "Available options are:\n" - " -e stat execute string 'stat'\n" - " -i enter interactive mode after executing 'script'\n" - " -l name require library 'name'\n" - " -v show version information\n" - " -E ignore environment variables\n" - " -- stop handling options\n" - " - stop handling options and execute stdin\n" - , - progname); -} - - -/* -** Prints an error message, adding the program name in front of it -** (if present) -*/ -static void l_message (const char *pname, const char *msg) { - if (pname) lua_writestringerror("%s: ", pname); - lua_writestringerror("%s\n", msg); -} - - -/* -** Check whether 'status' is not OK and, if so, prints the error -** message on the top of the stack. It assumes that the error object -** is a string, as it was either generated by Lua or by 'msghandler'. -*/ -static int report (lua_State *L, int status) { - if (status != LUA_OK) { - const char *msg = lua_tostring(L, -1); - l_message(progname, msg); - lua_pop(L, 1); /* remove message */ - } - return status; -} - - -/* -** Message handler used to run all chunks -*/ -static int msghandler (lua_State *L) { - const char *msg = lua_tostring(L, 1); - if (msg == NULL) { /* is error object not a string? */ - if (luaL_callmeta(L, 1, "__tostring") && /* does it have a metamethod */ - lua_type(L, -1) == LUA_TSTRING) /* that produces a string? */ - return 1; /* that is the message */ - else - msg = lua_pushfstring(L, "(error object is a %s value)", - luaL_typename(L, 1)); - } - luaL_traceback(L, L, msg, 1); /* append a standard traceback */ - return 1; /* return the traceback */ -} - - -/* -** Interface to 'lua_pcall', which sets appropriate message function -** and C-signal handler. Used to run all chunks. -*/ -static int docall (lua_State *L, int narg, int nres) { - int status; - int base = lua_gettop(L) - narg; /* function index */ - lua_pushcfunction(L, msghandler); /* push message handler */ - lua_insert(L, base); /* put it under function and args */ - globalL = L; /* to be available to 'laction' */ - signal(SIGINT, laction); /* set C-signal handler */ - status = lua_pcall(L, narg, nres, base); - signal(SIGINT, SIG_DFL); /* reset C-signal handler */ - lua_remove(L, base); /* remove message handler from the stack */ - return status; -} - - -static void print_version (void) { - lua_writestring(LUA_COPYRIGHT, strlen(LUA_COPYRIGHT)); - lua_writeline(); -} - - -/* -** Create the 'arg' table, which stores all arguments from the -** command line ('argv'). It should be aligned so that, at index 0, -** it has 'argv[script]', which is the script name. The arguments -** to the script (everything after 'script') go to positive indices; -** other arguments (before the script name) go to negative indices. -** If there is no script name, assume interpreter's name as base. -*/ -static void createargtable (lua_State *L, char **argv, int argc, int script) { - int i, narg; - if (script == argc) script = 0; /* no script name? */ - narg = argc - (script + 1); /* number of positive indices */ - lua_createtable(L, narg, script + 1); - for (i = 0; i < argc; i++) { - lua_pushstring(L, argv[i]); - lua_rawseti(L, -2, i - script); - } - lua_setglobal(L, "arg"); -} - - -static int dochunk (lua_State *L, int status) { - if (status == LUA_OK) status = docall(L, 0, 0); - return report(L, status); -} - - -static int dofile (lua_State *L, const char *name) { - return dochunk(L, luaL_loadfile(L, name)); -} - - -static int dostring (lua_State *L, const char *s, const char *name) { - return dochunk(L, luaL_loadbuffer(L, s, strlen(s), name)); -} - - -/* -** Calls 'require(name)' and stores the result in a global variable -** with the given name. -*/ -static int dolibrary (lua_State *L, const char *name) { - int status; - lua_getglobal(L, "require"); - lua_pushstring(L, name); - status = docall(L, 1, 1); /* call 'require(name)' */ - if (status == LUA_OK) - lua_setglobal(L, name); /* global[name] = require return */ - return report(L, status); -} - - -/* -** Returns the string to be used as a prompt by the interpreter. -*/ -static const char *get_prompt (lua_State *L, int firstline) { - const char *p; - lua_getglobal(L, firstline ? "_PROMPT" : "_PROMPT2"); - p = lua_tostring(L, -1); - if (p == NULL) p = (firstline ? LUA_PROMPT : LUA_PROMPT2); - return p; -} - -/* mark in error messages for incomplete statements */ -#define EOFMARK "" -#define marklen (sizeof(EOFMARK)/sizeof(char) - 1) - - -/* -** Check whether 'status' signals a syntax error and the error -** message at the top of the stack ends with the above mark for -** incomplete statements. -*/ -static int incomplete (lua_State *L, int status) { - if (status == LUA_ERRSYNTAX) { - size_t lmsg; - const char *msg = lua_tolstring(L, -1, &lmsg); - if (lmsg >= marklen && strcmp(msg + lmsg - marklen, EOFMARK) == 0) { - lua_pop(L, 1); - return 1; - } - } - return 0; /* else... */ -} - - -/* -** Prompt the user, read a line, and push it into the Lua stack. -*/ -static int pushline (lua_State *L, int firstline) { - char buffer[LUA_MAXINPUT]; - char *b = buffer; - size_t l; - const char *prmt = get_prompt(L, firstline); - int readstatus = lua_readline(L, b, prmt); - if (readstatus == 0) - return 0; /* no input (prompt will be popped by caller) */ - lua_pop(L, 1); /* remove prompt */ - l = strlen(b); - if (l > 0 && b[l-1] == '\n') /* line ends with newline? */ - b[--l] = '\0'; /* remove it */ - if (firstline && b[0] == '=') /* for compatibility with 5.2, ... */ - lua_pushfstring(L, "return %s", b + 1); /* change '=' to 'return' */ - else - lua_pushlstring(L, b, l); - lua_freeline(L, b); - return 1; -} - - -/* -** Try to compile line on the stack as 'return ;'; on return, stack -** has either compiled chunk or original line (if compilation failed). -*/ -static int addreturn (lua_State *L) { - const char *line = lua_tostring(L, -1); /* original line */ - const char *retline = lua_pushfstring(L, "return %s;", line); - int status = luaL_loadbuffer(L, retline, strlen(retline), "=stdin"); - if (status == LUA_OK) { - lua_remove(L, -2); /* remove modified line */ - if (line[0] != '\0') /* non empty? */ - lua_saveline(L, line); /* keep history */ - } - else - lua_pop(L, 2); /* pop result from 'luaL_loadbuffer' and modified line */ - return status; -} - - -/* -** Read multiple lines until a complete Lua statement -*/ -static int multiline (lua_State *L) { - for (;;) { /* repeat until gets a complete statement */ - size_t len; - const char *line = lua_tolstring(L, 1, &len); /* get what it has */ - int status = luaL_loadbuffer(L, line, len, "=stdin"); /* try it */ - if (!incomplete(L, status) || !pushline(L, 0)) { - lua_saveline(L, line); /* keep history */ - return status; /* cannot or should not try to add continuation line */ - } - lua_pushliteral(L, "\n"); /* add newline... */ - lua_insert(L, -2); /* ...between the two lines */ - lua_concat(L, 3); /* join them */ - } -} - - -/* -** Read a line and try to load (compile) it first as an expression (by -** adding "return " in front of it) and second as a statement. Return -** the final status of load/call with the resulting function (if any) -** in the top of the stack. -*/ -static int loadline (lua_State *L) { - int status; - lua_settop(L, 0); - if (!pushline(L, 1)) - return -1; /* no input */ - if ((status = addreturn(L)) != LUA_OK) /* 'return ...' did not work? */ - status = multiline(L); /* try as command, maybe with continuation lines */ - lua_remove(L, 1); /* remove line from the stack */ - lua_assert(lua_gettop(L) == 1); - return status; -} - - -/* -** Prints (calling the Lua 'print' function) any values on the stack -*/ -static void l_print (lua_State *L) { - int n = lua_gettop(L); - if (n > 0) { /* any result to be printed? */ - luaL_checkstack(L, LUA_MINSTACK, "too many results to print"); - lua_getglobal(L, "print"); - lua_insert(L, 1); - if (lua_pcall(L, n, 0, 0) != LUA_OK) - l_message(progname, lua_pushfstring(L, "error calling 'print' (%s)", - lua_tostring(L, -1))); - } -} - - -/* -** Do the REPL: repeatedly read (load) a line, evaluate (call) it, and -** print any results. -*/ -static void doREPL (lua_State *L) { - int status; - const char *oldprogname = progname; - progname = NULL; /* no 'progname' on errors in interactive mode */ - while ((status = loadline(L)) != -1) { - if (status == LUA_OK) - status = docall(L, 0, LUA_MULTRET); - if (status == LUA_OK) l_print(L); - else report(L, status); - } - lua_settop(L, 0); /* clear stack */ - lua_writeline(); - progname = oldprogname; -} - - -/* -** Push on the stack the contents of table 'arg' from 1 to #arg -*/ -static int pushargs (lua_State *L) { - int i, n; - if (lua_getglobal(L, "arg") != LUA_TTABLE) - luaL_error(L, "'arg' is not a table"); - n = (int)luaL_len(L, -1); - luaL_checkstack(L, n + 3, "too many arguments to script"); - for (i = 1; i <= n; i++) - lua_rawgeti(L, -i, i); - lua_remove(L, -i); /* remove table from the stack */ - return n; -} - - -static int handle_script (lua_State *L, char **argv) { - int status; - const char *fname = argv[0]; - if (strcmp(fname, "-") == 0 && strcmp(argv[-1], "--") != 0) - fname = NULL; /* stdin */ - status = luaL_loadfile(L, fname); - if (status == LUA_OK) { - int n = pushargs(L); /* push arguments to script */ - status = docall(L, n, LUA_MULTRET); - } - return report(L, status); -} - - - -/* bits of various argument indicators in 'args' */ -#define has_error 1 /* bad option */ -#define has_i 2 /* -i */ -#define has_v 4 /* -v */ -#define has_e 8 /* -e */ -#define has_E 16 /* -E */ - -/* -** Traverses all arguments from 'argv', returning a mask with those -** needed before running any Lua code (or an error code if it finds -** any invalid argument). 'first' returns the first not-handled argument -** (either the script name or a bad argument in case of error). -*/ -static int collectargs (char **argv, int *first) { - int args = 0; - int i; - for (i = 1; argv[i] != NULL; i++) { - *first = i; - if (argv[i][0] != '-') /* not an option? */ - return args; /* stop handling options */ - switch (argv[i][1]) { /* else check option */ - case '-': /* '--' */ - if (argv[i][2] != '\0') /* extra characters after '--'? */ - return has_error; /* invalid option */ - *first = i + 1; - return args; - case '\0': /* '-' */ - return args; /* script "name" is '-' */ - case 'E': - if (argv[i][2] != '\0') /* extra characters after 1st? */ - return has_error; /* invalid option */ - args |= has_E; - break; - case 'i': - args |= has_i; /* (-i implies -v) *//* FALLTHROUGH */ - case 'v': - if (argv[i][2] != '\0') /* extra characters after 1st? */ - return has_error; /* invalid option */ - args |= has_v; - break; - case 'e': - args |= has_e; /* FALLTHROUGH */ - case 'l': /* both options need an argument */ - if (argv[i][2] == '\0') { /* no concatenated argument? */ - i++; /* try next 'argv' */ - if (argv[i] == NULL || argv[i][0] == '-') - return has_error; /* no next argument or it is another option */ - } - break; - default: /* invalid option */ - return has_error; - } - } - *first = i; /* no script name */ - return args; -} - - -/* -** Processes options 'e' and 'l', which involve running Lua code. -** Returns 0 if some code raises an error. -*/ -static int runargs (lua_State *L, char **argv, int n) { - int i; - for (i = 1; i < n; i++) { - int option = argv[i][1]; - lua_assert(argv[i][0] == '-'); /* already checked */ - if (option == 'e' || option == 'l') { - int status; - const char *extra = argv[i] + 2; /* both options need an argument */ - if (*extra == '\0') extra = argv[++i]; - lua_assert(extra != NULL); - status = (option == 'e') - ? dostring(L, extra, "=(command line)") - : dolibrary(L, extra); - if (status != LUA_OK) return 0; - } - } - return 1; -} - - - -static int handle_luainit (lua_State *L) { - const char *name = "=" LUA_INITVARVERSION; - const char *init = getenv(name + 1); - if (init == NULL) { - name = "=" LUA_INIT_VAR; - init = getenv(name + 1); /* try alternative name */ - } - if (init == NULL) return LUA_OK; - else if (init[0] == '@') - return dofile(L, init+1); - else - return dostring(L, init, name); -} - - -/* -** Main body of stand-alone interpreter (to be called in protected mode). -** Reads the options and handles them all. -*/ -static int pmain (lua_State *L) { - int argc = (int)lua_tointeger(L, 1); - char **argv = (char **)lua_touserdata(L, 2); - int script; - int args = collectargs(argv, &script); - luaL_checkversion(L); /* check that interpreter has correct version */ - if (argv[0] && argv[0][0]) progname = argv[0]; - if (args == has_error) { /* bad arg? */ - print_usage(argv[script]); /* 'script' has index of bad arg. */ - return 0; - } - if (args & has_v) /* option '-v'? */ - print_version(); - if (args & has_E) { /* option '-E'? */ - lua_pushboolean(L, 1); /* signal for libraries to ignore env. vars. */ - lua_setfield(L, LUA_REGISTRYINDEX, "LUA_NOENV"); - } - luaL_openlibs(L); /* open standard libraries */ - createargtable(L, argv, argc, script); /* create table 'arg' */ - if (!(args & has_E)) { /* no option '-E'? */ - if (handle_luainit(L) != LUA_OK) /* run LUA_INIT */ - return 0; /* error running LUA_INIT */ - } - if (!runargs(L, argv, script)) /* execute arguments -e and -l */ - return 0; /* something failed */ - if (script < argc && /* execute main script (if there is one) */ - handle_script(L, argv + script) != LUA_OK) - return 0; - if (args & has_i) /* -i option? */ - doREPL(L); /* do read-eval-print loop */ - else if (script == argc && !(args & (has_e | has_v))) { /* no arguments? */ - if (lua_stdin_is_tty()) { /* running in interactive mode? */ - print_version(); - doREPL(L); /* do read-eval-print loop */ - } - else dofile(L, NULL); /* executes stdin as a file */ - } - lua_pushboolean(L, 1); /* signal no errors */ - return 1; -} - - -int main (int argc, char **argv) { - int status, result; - lua_State *L = luaL_newstate(); /* create state */ - if (L == NULL) { - l_message(argv[0], "cannot create state: not enough memory"); - return EXIT_FAILURE; - } - lua_pushcfunction(L, &pmain); /* to call 'pmain' in protected mode */ - lua_pushinteger(L, argc); /* 1st argument */ - lua_pushlightuserdata(L, argv); /* 2nd argument */ - status = lua_pcall(L, 2, 1, 0); /* do the call */ - result = lua_toboolean(L, -1); /* get result */ - report(L, status); - lua_close(L); - return (result && status == LUA_OK) ? EXIT_SUCCESS : EXIT_FAILURE; -} - diff --git a/deps/rcheevos/test/lua/src/lua.h b/deps/rcheevos/test/lua/src/lua.h deleted file mode 100644 index 26c0e2d698..0000000000 --- a/deps/rcheevos/test/lua/src/lua.h +++ /dev/null @@ -1,486 +0,0 @@ -/* -** $Id: lua.h,v 1.332 2016/12/22 15:51:20 roberto Exp $ -** Lua - A Scripting Language -** Lua.org, PUC-Rio, Brazil (http://www.lua.org) -** See Copyright Notice at the end of this file -*/ - - -#ifndef lua_h -#define lua_h - -#include -#include - - -#include "luaconf.h" - - -#define LUA_VERSION_MAJOR "5" -#define LUA_VERSION_MINOR "3" -#define LUA_VERSION_NUM 503 -#define LUA_VERSION_RELEASE "4" - -#define LUA_VERSION "Lua " LUA_VERSION_MAJOR "." LUA_VERSION_MINOR -#define LUA_RELEASE LUA_VERSION "." LUA_VERSION_RELEASE -#define LUA_COPYRIGHT LUA_RELEASE " Copyright (C) 1994-2017 Lua.org, PUC-Rio" -#define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo, W. Celes" - - -/* mark for precompiled code ('Lua') */ -#define LUA_SIGNATURE "\x1bLua" - -/* option for multiple returns in 'lua_pcall' and 'lua_call' */ -#define LUA_MULTRET (-1) - - -/* -** Pseudo-indices -** (-LUAI_MAXSTACK is the minimum valid index; we keep some free empty -** space after that to help overflow detection) -*/ -#define LUA_REGISTRYINDEX (-LUAI_MAXSTACK - 1000) -#define lua_upvalueindex(i) (LUA_REGISTRYINDEX - (i)) - - -/* thread status */ -#define LUA_OK 0 -#define LUA_YIELD 1 -#define LUA_ERRRUN 2 -#define LUA_ERRSYNTAX 3 -#define LUA_ERRMEM 4 -#define LUA_ERRGCMM 5 -#define LUA_ERRERR 6 - - -typedef struct lua_State lua_State; - - -/* -** basic types -*/ -#define LUA_TNONE (-1) - -#define LUA_TNIL 0 -#define LUA_TBOOLEAN 1 -#define LUA_TLIGHTUSERDATA 2 -#define LUA_TNUMBER 3 -#define LUA_TSTRING 4 -#define LUA_TTABLE 5 -#define LUA_TFUNCTION 6 -#define LUA_TUSERDATA 7 -#define LUA_TTHREAD 8 - -#define LUA_NUMTAGS 9 - - - -/* minimum Lua stack available to a C function */ -#define LUA_MINSTACK 20 - - -/* predefined values in the registry */ -#define LUA_RIDX_MAINTHREAD 1 -#define LUA_RIDX_GLOBALS 2 -#define LUA_RIDX_LAST LUA_RIDX_GLOBALS - - -/* type of numbers in Lua */ -typedef LUA_NUMBER lua_Number; - - -/* type for integer functions */ -typedef LUA_INTEGER lua_Integer; - -/* unsigned integer type */ -typedef LUA_UNSIGNED lua_Unsigned; - -/* type for continuation-function contexts */ -typedef LUA_KCONTEXT lua_KContext; - - -/* -** Type for C functions registered with Lua -*/ -typedef int (*lua_CFunction) (lua_State *L); - -/* -** Type for continuation functions -*/ -typedef int (*lua_KFunction) (lua_State *L, int status, lua_KContext ctx); - - -/* -** Type for functions that read/write blocks when loading/dumping Lua chunks -*/ -typedef const char * (*lua_Reader) (lua_State *L, void *ud, size_t *sz); - -typedef int (*lua_Writer) (lua_State *L, const void *p, size_t sz, void *ud); - - -/* -** Type for memory-allocation functions -*/ -typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize, size_t nsize); - - - -/* -** generic extra include file -*/ -#if defined(LUA_USER_H) -#include LUA_USER_H -#endif - - -/* -** RCS ident string -*/ -extern const char lua_ident[]; - - -/* -** state manipulation -*/ -LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud); -LUA_API void (lua_close) (lua_State *L); -LUA_API lua_State *(lua_newthread) (lua_State *L); - -LUA_API lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf); - - -LUA_API const lua_Number *(lua_version) (lua_State *L); - - -/* -** basic stack manipulation -*/ -LUA_API int (lua_absindex) (lua_State *L, int idx); -LUA_API int (lua_gettop) (lua_State *L); -LUA_API void (lua_settop) (lua_State *L, int idx); -LUA_API void (lua_pushvalue) (lua_State *L, int idx); -LUA_API void (lua_rotate) (lua_State *L, int idx, int n); -LUA_API void (lua_copy) (lua_State *L, int fromidx, int toidx); -LUA_API int (lua_checkstack) (lua_State *L, int n); - -LUA_API void (lua_xmove) (lua_State *from, lua_State *to, int n); - - -/* -** access functions (stack -> C) -*/ - -LUA_API int (lua_isnumber) (lua_State *L, int idx); -LUA_API int (lua_isstring) (lua_State *L, int idx); -LUA_API int (lua_iscfunction) (lua_State *L, int idx); -LUA_API int (lua_isinteger) (lua_State *L, int idx); -LUA_API int (lua_isuserdata) (lua_State *L, int idx); -LUA_API int (lua_type) (lua_State *L, int idx); -LUA_API const char *(lua_typename) (lua_State *L, int tp); - -LUA_API lua_Number (lua_tonumberx) (lua_State *L, int idx, int *isnum); -LUA_API lua_Integer (lua_tointegerx) (lua_State *L, int idx, int *isnum); -LUA_API int (lua_toboolean) (lua_State *L, int idx); -LUA_API const char *(lua_tolstring) (lua_State *L, int idx, size_t *len); -LUA_API size_t (lua_rawlen) (lua_State *L, int idx); -LUA_API lua_CFunction (lua_tocfunction) (lua_State *L, int idx); -LUA_API void *(lua_touserdata) (lua_State *L, int idx); -LUA_API lua_State *(lua_tothread) (lua_State *L, int idx); -LUA_API const void *(lua_topointer) (lua_State *L, int idx); - - -/* -** Comparison and arithmetic functions -*/ - -#define LUA_OPADD 0 /* ORDER TM, ORDER OP */ -#define LUA_OPSUB 1 -#define LUA_OPMUL 2 -#define LUA_OPMOD 3 -#define LUA_OPPOW 4 -#define LUA_OPDIV 5 -#define LUA_OPIDIV 6 -#define LUA_OPBAND 7 -#define LUA_OPBOR 8 -#define LUA_OPBXOR 9 -#define LUA_OPSHL 10 -#define LUA_OPSHR 11 -#define LUA_OPUNM 12 -#define LUA_OPBNOT 13 - -LUA_API void (lua_arith) (lua_State *L, int op); - -#define LUA_OPEQ 0 -#define LUA_OPLT 1 -#define LUA_OPLE 2 - -LUA_API int (lua_rawequal) (lua_State *L, int idx1, int idx2); -LUA_API int (lua_compare) (lua_State *L, int idx1, int idx2, int op); - - -/* -** push functions (C -> stack) -*/ -LUA_API void (lua_pushnil) (lua_State *L); -LUA_API void (lua_pushnumber) (lua_State *L, lua_Number n); -LUA_API void (lua_pushinteger) (lua_State *L, lua_Integer n); -LUA_API const char *(lua_pushlstring) (lua_State *L, const char *s, size_t len); -LUA_API const char *(lua_pushstring) (lua_State *L, const char *s); -LUA_API const char *(lua_pushvfstring) (lua_State *L, const char *fmt, - va_list argp); -LUA_API const char *(lua_pushfstring) (lua_State *L, const char *fmt, ...); -LUA_API void (lua_pushcclosure) (lua_State *L, lua_CFunction fn, int n); -LUA_API void (lua_pushboolean) (lua_State *L, int b); -LUA_API void (lua_pushlightuserdata) (lua_State *L, void *p); -LUA_API int (lua_pushthread) (lua_State *L); - - -/* -** get functions (Lua -> stack) -*/ -LUA_API int (lua_getglobal) (lua_State *L, const char *name); -LUA_API int (lua_gettable) (lua_State *L, int idx); -LUA_API int (lua_getfield) (lua_State *L, int idx, const char *k); -LUA_API int (lua_geti) (lua_State *L, int idx, lua_Integer n); -LUA_API int (lua_rawget) (lua_State *L, int idx); -LUA_API int (lua_rawgeti) (lua_State *L, int idx, lua_Integer n); -LUA_API int (lua_rawgetp) (lua_State *L, int idx, const void *p); - -LUA_API void (lua_createtable) (lua_State *L, int narr, int nrec); -LUA_API void *(lua_newuserdata) (lua_State *L, size_t sz); -LUA_API int (lua_getmetatable) (lua_State *L, int objindex); -LUA_API int (lua_getuservalue) (lua_State *L, int idx); - - -/* -** set functions (stack -> Lua) -*/ -LUA_API void (lua_setglobal) (lua_State *L, const char *name); -LUA_API void (lua_settable) (lua_State *L, int idx); -LUA_API void (lua_setfield) (lua_State *L, int idx, const char *k); -LUA_API void (lua_seti) (lua_State *L, int idx, lua_Integer n); -LUA_API void (lua_rawset) (lua_State *L, int idx); -LUA_API void (lua_rawseti) (lua_State *L, int idx, lua_Integer n); -LUA_API void (lua_rawsetp) (lua_State *L, int idx, const void *p); -LUA_API int (lua_setmetatable) (lua_State *L, int objindex); -LUA_API void (lua_setuservalue) (lua_State *L, int idx); - - -/* -** 'load' and 'call' functions (load and run Lua code) -*/ -LUA_API void (lua_callk) (lua_State *L, int nargs, int nresults, - lua_KContext ctx, lua_KFunction k); -#define lua_call(L,n,r) lua_callk(L, (n), (r), 0, NULL) - -LUA_API int (lua_pcallk) (lua_State *L, int nargs, int nresults, int errfunc, - lua_KContext ctx, lua_KFunction k); -#define lua_pcall(L,n,r,f) lua_pcallk(L, (n), (r), (f), 0, NULL) - -LUA_API int (lua_load) (lua_State *L, lua_Reader reader, void *dt, - const char *chunkname, const char *mode); - -LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data, int strip); - - -/* -** coroutine functions -*/ -LUA_API int (lua_yieldk) (lua_State *L, int nresults, lua_KContext ctx, - lua_KFunction k); -LUA_API int (lua_resume) (lua_State *L, lua_State *from, int narg); -LUA_API int (lua_status) (lua_State *L); -LUA_API int (lua_isyieldable) (lua_State *L); - -#define lua_yield(L,n) lua_yieldk(L, (n), 0, NULL) - - -/* -** garbage-collection function and options -*/ - -#define LUA_GCSTOP 0 -#define LUA_GCRESTART 1 -#define LUA_GCCOLLECT 2 -#define LUA_GCCOUNT 3 -#define LUA_GCCOUNTB 4 -#define LUA_GCSTEP 5 -#define LUA_GCSETPAUSE 6 -#define LUA_GCSETSTEPMUL 7 -#define LUA_GCISRUNNING 9 - -LUA_API int (lua_gc) (lua_State *L, int what, int data); - - -/* -** miscellaneous functions -*/ - -LUA_API int (lua_error) (lua_State *L); - -LUA_API int (lua_next) (lua_State *L, int idx); - -LUA_API void (lua_concat) (lua_State *L, int n); -LUA_API void (lua_len) (lua_State *L, int idx); - -LUA_API size_t (lua_stringtonumber) (lua_State *L, const char *s); - -LUA_API lua_Alloc (lua_getallocf) (lua_State *L, void **ud); -LUA_API void (lua_setallocf) (lua_State *L, lua_Alloc f, void *ud); - - - -/* -** {============================================================== -** some useful macros -** =============================================================== -*/ - -#define lua_getextraspace(L) ((void *)((char *)(L) - LUA_EXTRASPACE)) - -#define lua_tonumber(L,i) lua_tonumberx(L,(i),NULL) -#define lua_tointeger(L,i) lua_tointegerx(L,(i),NULL) - -#define lua_pop(L,n) lua_settop(L, -(n)-1) - -#define lua_newtable(L) lua_createtable(L, 0, 0) - -#define lua_register(L,n,f) (lua_pushcfunction(L, (f)), lua_setglobal(L, (n))) - -#define lua_pushcfunction(L,f) lua_pushcclosure(L, (f), 0) - -#define lua_isfunction(L,n) (lua_type(L, (n)) == LUA_TFUNCTION) -#define lua_istable(L,n) (lua_type(L, (n)) == LUA_TTABLE) -#define lua_islightuserdata(L,n) (lua_type(L, (n)) == LUA_TLIGHTUSERDATA) -#define lua_isnil(L,n) (lua_type(L, (n)) == LUA_TNIL) -#define lua_isboolean(L,n) (lua_type(L, (n)) == LUA_TBOOLEAN) -#define lua_isthread(L,n) (lua_type(L, (n)) == LUA_TTHREAD) -#define lua_isnone(L,n) (lua_type(L, (n)) == LUA_TNONE) -#define lua_isnoneornil(L, n) (lua_type(L, (n)) <= 0) - -#define lua_pushliteral(L, s) lua_pushstring(L, "" s) - -#define lua_pushglobaltable(L) \ - ((void)lua_rawgeti(L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS)) - -#define lua_tostring(L,i) lua_tolstring(L, (i), NULL) - - -#define lua_insert(L,idx) lua_rotate(L, (idx), 1) - -#define lua_remove(L,idx) (lua_rotate(L, (idx), -1), lua_pop(L, 1)) - -#define lua_replace(L,idx) (lua_copy(L, -1, (idx)), lua_pop(L, 1)) - -/* }============================================================== */ - - -/* -** {============================================================== -** compatibility macros for unsigned conversions -** =============================================================== -*/ -#if defined(LUA_COMPAT_APIINTCASTS) - -#define lua_pushunsigned(L,n) lua_pushinteger(L, (lua_Integer)(n)) -#define lua_tounsignedx(L,i,is) ((lua_Unsigned)lua_tointegerx(L,i,is)) -#define lua_tounsigned(L,i) lua_tounsignedx(L,(i),NULL) - -#endif -/* }============================================================== */ - -/* -** {====================================================================== -** Debug API -** ======================================================================= -*/ - - -/* -** Event codes -*/ -#define LUA_HOOKCALL 0 -#define LUA_HOOKRET 1 -#define LUA_HOOKLINE 2 -#define LUA_HOOKCOUNT 3 -#define LUA_HOOKTAILCALL 4 - - -/* -** Event masks -*/ -#define LUA_MASKCALL (1 << LUA_HOOKCALL) -#define LUA_MASKRET (1 << LUA_HOOKRET) -#define LUA_MASKLINE (1 << LUA_HOOKLINE) -#define LUA_MASKCOUNT (1 << LUA_HOOKCOUNT) - -typedef struct lua_Debug lua_Debug; /* activation record */ - - -/* Functions to be called by the debugger in specific events */ -typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar); - - -LUA_API int (lua_getstack) (lua_State *L, int level, lua_Debug *ar); -LUA_API int (lua_getinfo) (lua_State *L, const char *what, lua_Debug *ar); -LUA_API const char *(lua_getlocal) (lua_State *L, const lua_Debug *ar, int n); -LUA_API const char *(lua_setlocal) (lua_State *L, const lua_Debug *ar, int n); -LUA_API const char *(lua_getupvalue) (lua_State *L, int funcindex, int n); -LUA_API const char *(lua_setupvalue) (lua_State *L, int funcindex, int n); - -LUA_API void *(lua_upvalueid) (lua_State *L, int fidx, int n); -LUA_API void (lua_upvaluejoin) (lua_State *L, int fidx1, int n1, - int fidx2, int n2); - -LUA_API void (lua_sethook) (lua_State *L, lua_Hook func, int mask, int count); -LUA_API lua_Hook (lua_gethook) (lua_State *L); -LUA_API int (lua_gethookmask) (lua_State *L); -LUA_API int (lua_gethookcount) (lua_State *L); - - -struct lua_Debug { - int event; - const char *name; /* (n) */ - const char *namewhat; /* (n) 'global', 'local', 'field', 'method' */ - const char *what; /* (S) 'Lua', 'C', 'main', 'tail' */ - const char *source; /* (S) */ - int currentline; /* (l) */ - int linedefined; /* (S) */ - int lastlinedefined; /* (S) */ - unsigned char nups; /* (u) number of upvalues */ - unsigned char nparams;/* (u) number of parameters */ - char isvararg; /* (u) */ - char istailcall; /* (t) */ - char short_src[LUA_IDSIZE]; /* (S) */ - /* private part */ - struct CallInfo *i_ci; /* active function */ -}; - -/* }====================================================================== */ - - -/****************************************************************************** -* Copyright (C) 1994-2017 Lua.org, PUC-Rio. -* -* Permission is hereby granted, free of charge, to any person obtaining -* a copy of this software and associated documentation files (the -* "Software"), to deal in the Software without restriction, including -* without limitation the rights to use, copy, modify, merge, publish, -* distribute, sublicense, and/or sell copies of the Software, and to -* permit persons to whom the Software is furnished to do so, subject to -* the following conditions: -* -* The above copyright notice and this permission notice shall be -* included in all copies or substantial portions of the Software. -* -* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, -* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. -* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY -* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, -* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE -* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. -******************************************************************************/ - - -#endif diff --git a/deps/rcheevos/test/lua/src/lua.hpp b/deps/rcheevos/test/lua/src/lua.hpp deleted file mode 100644 index ec417f5946..0000000000 --- a/deps/rcheevos/test/lua/src/lua.hpp +++ /dev/null @@ -1,9 +0,0 @@ -// lua.hpp -// Lua header files for C++ -// <> not supplied automatically because Lua also compiles as C++ - -extern "C" { -#include "lua.h" -#include "lualib.h" -#include "lauxlib.h" -} diff --git a/deps/rcheevos/test/lua/src/luac.c b/deps/rcheevos/test/lua/src/luac.c deleted file mode 100644 index c0c91d017a..0000000000 --- a/deps/rcheevos/test/lua/src/luac.c +++ /dev/null @@ -1,449 +0,0 @@ -/* -** $Id: luac.c,v 1.75 2015/03/12 01:58:27 lhf Exp $ -** Lua compiler (saves bytecodes to files; also lists bytecodes) -** See Copyright Notice in lua.h -*/ - -#define luac_c -#define LUA_CORE - -#include "lprefix.h" - -#include -#include -#include -#include -#include - -#include "lua.h" -#include "lauxlib.h" - -#include "lobject.h" -#include "lstate.h" -#include "lundump.h" - -static void PrintFunction(const Proto* f, int full); -#define luaU_print PrintFunction - -#define PROGNAME "luac" /* default program name */ -#define OUTPUT PROGNAME ".out" /* default output file */ - -static int listing=0; /* list bytecodes? */ -static int dumping=1; /* dump bytecodes? */ -static int stripping=0; /* strip debug information? */ -static char Output[]={ OUTPUT }; /* default output file name */ -static const char* output=Output; /* actual output file name */ -static const char* progname=PROGNAME; /* actual program name */ - -static void fatal(const char* message) -{ - fprintf(stderr,"%s: %s\n",progname,message); - exit(EXIT_FAILURE); -} - -static void cannot(const char* what) -{ - fprintf(stderr,"%s: cannot %s %s: %s\n",progname,what,output,strerror(errno)); - exit(EXIT_FAILURE); -} - -static void usage(const char* message) -{ - if (*message=='-') - fprintf(stderr,"%s: unrecognized option '%s'\n",progname,message); - else - fprintf(stderr,"%s: %s\n",progname,message); - fprintf(stderr, - "usage: %s [options] [filenames]\n" - "Available options are:\n" - " -l list (use -l -l for full listing)\n" - " -o name output to file 'name' (default is \"%s\")\n" - " -p parse only\n" - " -s strip debug information\n" - " -v show version information\n" - " -- stop handling options\n" - " - stop handling options and process stdin\n" - ,progname,Output); - exit(EXIT_FAILURE); -} - -#define IS(s) (strcmp(argv[i],s)==0) - -static int doargs(int argc, char* argv[]) -{ - int i; - int version=0; - if (argv[0]!=NULL && *argv[0]!=0) progname=argv[0]; - for (i=1; itop+(i)) - -static const Proto* combine(lua_State* L, int n) -{ - if (n==1) - return toproto(L,-1); - else - { - Proto* f; - int i=n; - if (lua_load(L,reader,&i,"=(" PROGNAME ")",NULL)!=LUA_OK) fatal(lua_tostring(L,-1)); - f=toproto(L,-1); - for (i=0; ip[i]=toproto(L,i-n-1); - if (f->p[i]->sizeupvalues>0) f->p[i]->upvalues[0].instack=0; - } - f->sizelineinfo=0; - return f; - } -} - -static int writer(lua_State* L, const void* p, size_t size, void* u) -{ - UNUSED(L); - return (fwrite(p,size,1,(FILE*)u)!=1) && (size!=0); -} - -static int pmain(lua_State* L) -{ - int argc=(int)lua_tointeger(L,1); - char** argv=(char**)lua_touserdata(L,2); - const Proto* f; - int i; - if (!lua_checkstack(L,argc)) fatal("too many input files"); - for (i=0; i1); - if (dumping) - { - FILE* D= (output==NULL) ? stdout : fopen(output,"wb"); - if (D==NULL) cannot("open"); - lua_lock(L); - luaU_dump(L,f,writer,D,stripping); - lua_unlock(L); - if (ferror(D)) cannot("write"); - if (fclose(D)) cannot("close"); - } - return 0; -} - -int main(int argc, char* argv[]) -{ - lua_State* L; - int i=doargs(argc,argv); - argc-=i; argv+=i; - if (argc<=0) usage("no input files given"); - L=luaL_newstate(); - if (L==NULL) fatal("cannot create state: not enough memory"); - lua_pushcfunction(L,&pmain); - lua_pushinteger(L,argc); - lua_pushlightuserdata(L,argv); - if (lua_pcall(L,2,0,0)!=LUA_OK) fatal(lua_tostring(L,-1)); - lua_close(L); - return EXIT_SUCCESS; -} - -/* -** $Id: luac.c,v 1.75 2015/03/12 01:58:27 lhf Exp $ -** print bytecodes -** See Copyright Notice in lua.h -*/ - -#include -#include - -#define luac_c -#define LUA_CORE - -#include "ldebug.h" -#include "lobject.h" -#include "lopcodes.h" - -#define VOID(p) ((const void*)(p)) - -static void PrintString(const TString* ts) -{ - const char* s=getstr(ts); - size_t i,n=tsslen(ts); - printf("%c",'"'); - for (i=0; ik[i]; - switch (ttype(o)) - { - case LUA_TNIL: - printf("nil"); - break; - case LUA_TBOOLEAN: - printf(bvalue(o) ? "true" : "false"); - break; - case LUA_TNUMFLT: - { - char buff[100]; - sprintf(buff,LUA_NUMBER_FMT,fltvalue(o)); - printf("%s",buff); - if (buff[strspn(buff,"-0123456789")]=='\0') printf(".0"); - break; - } - case LUA_TNUMINT: - printf(LUA_INTEGER_FMT,ivalue(o)); - break; - case LUA_TSHRSTR: case LUA_TLNGSTR: - PrintString(tsvalue(o)); - break; - default: /* cannot happen */ - printf("? type=%d",ttype(o)); - break; - } -} - -#define UPVALNAME(x) ((f->upvalues[x].name) ? getstr(f->upvalues[x].name) : "-") -#define MYK(x) (-1-(x)) - -static void PrintCode(const Proto* f) -{ - const Instruction* code=f->code; - int pc,n=f->sizecode; - for (pc=0; pc0) printf("[%d]\t",line); else printf("[-]\t"); - printf("%-9s\t",luaP_opnames[o]); - switch (getOpMode(o)) - { - case iABC: - printf("%d",a); - if (getBMode(o)!=OpArgN) printf(" %d",ISK(b) ? (MYK(INDEXK(b))) : b); - if (getCMode(o)!=OpArgN) printf(" %d",ISK(c) ? (MYK(INDEXK(c))) : c); - break; - case iABx: - printf("%d",a); - if (getBMode(o)==OpArgK) printf(" %d",MYK(bx)); - if (getBMode(o)==OpArgU) printf(" %d",bx); - break; - case iAsBx: - printf("%d %d",a,sbx); - break; - case iAx: - printf("%d",MYK(ax)); - break; - } - switch (o) - { - case OP_LOADK: - printf("\t; "); PrintConstant(f,bx); - break; - case OP_GETUPVAL: - case OP_SETUPVAL: - printf("\t; %s",UPVALNAME(b)); - break; - case OP_GETTABUP: - printf("\t; %s",UPVALNAME(b)); - if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); } - break; - case OP_SETTABUP: - printf("\t; %s",UPVALNAME(a)); - if (ISK(b)) { printf(" "); PrintConstant(f,INDEXK(b)); } - if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); } - break; - case OP_GETTABLE: - case OP_SELF: - if (ISK(c)) { printf("\t; "); PrintConstant(f,INDEXK(c)); } - break; - case OP_SETTABLE: - case OP_ADD: - case OP_SUB: - case OP_MUL: - case OP_POW: - case OP_DIV: - case OP_IDIV: - case OP_BAND: - case OP_BOR: - case OP_BXOR: - case OP_SHL: - case OP_SHR: - case OP_EQ: - case OP_LT: - case OP_LE: - if (ISK(b) || ISK(c)) - { - printf("\t; "); - if (ISK(b)) PrintConstant(f,INDEXK(b)); else printf("-"); - printf(" "); - if (ISK(c)) PrintConstant(f,INDEXK(c)); else printf("-"); - } - break; - case OP_JMP: - case OP_FORLOOP: - case OP_FORPREP: - case OP_TFORLOOP: - printf("\t; to %d",sbx+pc+2); - break; - case OP_CLOSURE: - printf("\t; %p",VOID(f->p[bx])); - break; - case OP_SETLIST: - if (c==0) printf("\t; %d",(int)code[++pc]); else printf("\t; %d",c); - break; - case OP_EXTRAARG: - printf("\t; "); PrintConstant(f,ax); - break; - default: - break; - } - printf("\n"); - } -} - -#define SS(x) ((x==1)?"":"s") -#define S(x) (int)(x),SS(x) - -static void PrintHeader(const Proto* f) -{ - const char* s=f->source ? getstr(f->source) : "=?"; - if (*s=='@' || *s=='=') - s++; - else if (*s==LUA_SIGNATURE[0]) - s="(bstring)"; - else - s="(string)"; - printf("\n%s <%s:%d,%d> (%d instruction%s at %p)\n", - (f->linedefined==0)?"main":"function",s, - f->linedefined,f->lastlinedefined, - S(f->sizecode),VOID(f)); - printf("%d%s param%s, %d slot%s, %d upvalue%s, ", - (int)(f->numparams),f->is_vararg?"+":"",SS(f->numparams), - S(f->maxstacksize),S(f->sizeupvalues)); - printf("%d local%s, %d constant%s, %d function%s\n", - S(f->sizelocvars),S(f->sizek),S(f->sizep)); -} - -static void PrintDebug(const Proto* f) -{ - int i,n; - n=f->sizek; - printf("constants (%d) for %p:\n",n,VOID(f)); - for (i=0; isizelocvars; - printf("locals (%d) for %p:\n",n,VOID(f)); - for (i=0; ilocvars[i].varname),f->locvars[i].startpc+1,f->locvars[i].endpc+1); - } - n=f->sizeupvalues; - printf("upvalues (%d) for %p:\n",n,VOID(f)); - for (i=0; iupvalues[i].instack,f->upvalues[i].idx); - } -} - -static void PrintFunction(const Proto* f, int full) -{ - int i,n=f->sizep; - PrintHeader(f); - PrintCode(f); - if (full) PrintDebug(f); - for (i=0; ip[i],full); -} diff --git a/deps/rcheevos/test/lua/src/luaconf.h b/deps/rcheevos/test/lua/src/luaconf.h deleted file mode 100644 index f37bea0964..0000000000 --- a/deps/rcheevos/test/lua/src/luaconf.h +++ /dev/null @@ -1,783 +0,0 @@ -/* -** $Id: luaconf.h,v 1.259 2016/12/22 13:08:50 roberto Exp $ -** Configuration file for Lua -** See Copyright Notice in lua.h -*/ - - -#ifndef luaconf_h -#define luaconf_h - -#include -#include - - -/* -** =================================================================== -** Search for "@@" to find all configurable definitions. -** =================================================================== -*/ - - -/* -** {==================================================================== -** System Configuration: macros to adapt (if needed) Lua to some -** particular platform, for instance compiling it with 32-bit numbers or -** restricting it to C89. -** ===================================================================== -*/ - -/* -@@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats. You -** can also define LUA_32BITS in the make file, but changing here you -** ensure that all software connected to Lua will be compiled with the -** same configuration. -*/ -/* #define LUA_32BITS */ - - -/* -@@ LUA_USE_C89 controls the use of non-ISO-C89 features. -** Define it if you want Lua to avoid the use of a few C99 features -** or Windows-specific features on Windows. -*/ -/* #define LUA_USE_C89 */ - - -/* -** By default, Lua on Windows use (some) specific Windows features -*/ -#if !defined(LUA_USE_C89) && defined(_WIN32) && !defined(_WIN32_WCE) -#define LUA_USE_WINDOWS /* enable goodies for regular Windows */ -#endif - - -#if defined(LUA_USE_WINDOWS) -#define LUA_DL_DLL /* enable support for DLL */ -#define LUA_USE_C89 /* broadly, Windows is C89 */ -#endif - - -#if defined(LUA_USE_LINUX) -#define LUA_USE_POSIX -#define LUA_USE_DLOPEN /* needs an extra library: -ldl */ -#define LUA_USE_READLINE /* needs some extra libraries */ -#endif - - -#if defined(LUA_USE_MACOSX) -#define LUA_USE_POSIX -#define LUA_USE_DLOPEN /* MacOS does not need -ldl */ -#define LUA_USE_READLINE /* needs an extra library: -lreadline */ -#endif - - -/* -@@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for -** C89 ('long' and 'double'); Windows always has '__int64', so it does -** not need to use this case. -*/ -#if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS) -#define LUA_C89_NUMBERS -#endif - - - -/* -@@ LUAI_BITSINT defines the (minimum) number of bits in an 'int'. -*/ -/* avoid undefined shifts */ -#if ((INT_MAX >> 15) >> 15) >= 1 -#define LUAI_BITSINT 32 -#else -/* 'int' always must have at least 16 bits */ -#define LUAI_BITSINT 16 -#endif - - -/* -@@ LUA_INT_TYPE defines the type for Lua integers. -@@ LUA_FLOAT_TYPE defines the type for Lua floats. -** Lua should work fine with any mix of these options (if supported -** by your C compiler). The usual configurations are 64-bit integers -** and 'double' (the default), 32-bit integers and 'float' (for -** restricted platforms), and 'long'/'double' (for C compilers not -** compliant with C99, which may not have support for 'long long'). -*/ - -/* predefined options for LUA_INT_TYPE */ -#define LUA_INT_INT 1 -#define LUA_INT_LONG 2 -#define LUA_INT_LONGLONG 3 - -/* predefined options for LUA_FLOAT_TYPE */ -#define LUA_FLOAT_FLOAT 1 -#define LUA_FLOAT_DOUBLE 2 -#define LUA_FLOAT_LONGDOUBLE 3 - -#if defined(LUA_32BITS) /* { */ -/* -** 32-bit integers and 'float' -*/ -#if LUAI_BITSINT >= 32 /* use 'int' if big enough */ -#define LUA_INT_TYPE LUA_INT_INT -#else /* otherwise use 'long' */ -#define LUA_INT_TYPE LUA_INT_LONG -#endif -#define LUA_FLOAT_TYPE LUA_FLOAT_FLOAT - -#elif defined(LUA_C89_NUMBERS) /* }{ */ -/* -** largest types available for C89 ('long' and 'double') -*/ -#define LUA_INT_TYPE LUA_INT_LONG -#define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE - -#endif /* } */ - - -/* -** default configuration for 64-bit Lua ('long long' and 'double') -*/ -#if !defined(LUA_INT_TYPE) -#define LUA_INT_TYPE LUA_INT_LONGLONG -#endif - -#if !defined(LUA_FLOAT_TYPE) -#define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE -#endif - -/* }================================================================== */ - - - - -/* -** {================================================================== -** Configuration for Paths. -** =================================================================== -*/ - -/* -** LUA_PATH_SEP is the character that separates templates in a path. -** LUA_PATH_MARK is the string that marks the substitution points in a -** template. -** LUA_EXEC_DIR in a Windows path is replaced by the executable's -** directory. -*/ -#define LUA_PATH_SEP ";" -#define LUA_PATH_MARK "?" -#define LUA_EXEC_DIR "!" - - -/* -@@ LUA_PATH_DEFAULT is the default path that Lua uses to look for -** Lua libraries. -@@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for -** C libraries. -** CHANGE them if your machine has a non-conventional directory -** hierarchy or if you want to install your libraries in -** non-conventional directories. -*/ -#define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR -#if defined(_WIN32) /* { */ -/* -** In Windows, any exclamation mark ('!') in the path is replaced by the -** path of the directory of the executable file of the current process. -*/ -#define LUA_LDIR "!\\lua\\" -#define LUA_CDIR "!\\" -#define LUA_SHRDIR "!\\..\\share\\lua\\" LUA_VDIR "\\" -#define LUA_PATH_DEFAULT \ - LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ - LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" \ - LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \ - ".\\?.lua;" ".\\?\\init.lua" -#define LUA_CPATH_DEFAULT \ - LUA_CDIR"?.dll;" \ - LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \ - LUA_CDIR"loadall.dll;" ".\\?.dll" - -#else /* }{ */ - -#define LUA_ROOT "/usr/local/" -#define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR "/" -#define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR "/" -#define LUA_PATH_DEFAULT \ - LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ - LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" \ - "./?.lua;" "./?/init.lua" -#define LUA_CPATH_DEFAULT \ - LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so" -#endif /* } */ - - -/* -@@ LUA_DIRSEP is the directory separator (for submodules). -** CHANGE it if your machine does not use "/" as the directory separator -** and is not Windows. (On Windows Lua automatically uses "\".) -*/ -#if defined(_WIN32) -#define LUA_DIRSEP "\\" -#else -#define LUA_DIRSEP "/" -#endif - -/* }================================================================== */ - - -/* -** {================================================================== -** Marks for exported symbols in the C code -** =================================================================== -*/ - -/* -@@ LUA_API is a mark for all core API functions. -@@ LUALIB_API is a mark for all auxiliary library functions. -@@ LUAMOD_API is a mark for all standard library opening functions. -** CHANGE them if you need to define those functions in some special way. -** For instance, if you want to create one Windows DLL with the core and -** the libraries, you may want to use the following definition (define -** LUA_BUILD_AS_DLL to get it). -*/ -#if defined(LUA_BUILD_AS_DLL) /* { */ - -#if defined(LUA_CORE) || defined(LUA_LIB) /* { */ -#define LUA_API __declspec(dllexport) -#else /* }{ */ -#define LUA_API __declspec(dllimport) -#endif /* } */ - -#else /* }{ */ - -#define LUA_API extern - -#endif /* } */ - - -/* more often than not the libs go together with the core */ -#define LUALIB_API LUA_API -#define LUAMOD_API LUALIB_API - - -/* -@@ LUAI_FUNC is a mark for all extern functions that are not to be -** exported to outside modules. -@@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables -** that are not to be exported to outside modules (LUAI_DDEF for -** definitions and LUAI_DDEC for declarations). -** CHANGE them if you need to mark them in some special way. Elf/gcc -** (versions 3.2 and later) mark them as "hidden" to optimize access -** when Lua is compiled as a shared library. Not all elf targets support -** this attribute. Unfortunately, gcc does not offer a way to check -** whether the target offers that support, and those without support -** give a warning about it. To avoid these warnings, change to the -** default definition. -*/ -#if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ - defined(__ELF__) /* { */ -#define LUAI_FUNC __attribute__((visibility("hidden"))) extern -#else /* }{ */ -#define LUAI_FUNC extern -#endif /* } */ - -#define LUAI_DDEC LUAI_FUNC -#define LUAI_DDEF /* empty */ - -/* }================================================================== */ - - -/* -** {================================================================== -** Compatibility with previous versions -** =================================================================== -*/ - -/* -@@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2. -@@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1. -** You can define it to get all options, or change specific options -** to fit your specific needs. -*/ -#if defined(LUA_COMPAT_5_2) /* { */ - -/* -@@ LUA_COMPAT_MATHLIB controls the presence of several deprecated -** functions in the mathematical library. -*/ -#define LUA_COMPAT_MATHLIB - -/* -@@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'. -*/ -#define LUA_COMPAT_BITLIB - -/* -@@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod. -*/ -#define LUA_COMPAT_IPAIRS - -/* -@@ LUA_COMPAT_APIINTCASTS controls the presence of macros for -** manipulating other integer types (lua_pushunsigned, lua_tounsigned, -** luaL_checkint, luaL_checklong, etc.) -*/ -#define LUA_COMPAT_APIINTCASTS - -#endif /* } */ - - -#if defined(LUA_COMPAT_5_1) /* { */ - -/* Incompatibilities from 5.2 -> 5.3 */ -#define LUA_COMPAT_MATHLIB -#define LUA_COMPAT_APIINTCASTS - -/* -@@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'. -** You can replace it with 'table.unpack'. -*/ -#define LUA_COMPAT_UNPACK - -/* -@@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'. -** You can replace it with 'package.searchers'. -*/ -#define LUA_COMPAT_LOADERS - -/* -@@ macro 'lua_cpcall' emulates deprecated function lua_cpcall. -** You can call your C function directly (with light C functions). -*/ -#define lua_cpcall(L,f,u) \ - (lua_pushcfunction(L, (f)), \ - lua_pushlightuserdata(L,(u)), \ - lua_pcall(L,1,0,0)) - - -/* -@@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library. -** You can rewrite 'log10(x)' as 'log(x, 10)'. -*/ -#define LUA_COMPAT_LOG10 - -/* -@@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base -** library. You can rewrite 'loadstring(s)' as 'load(s)'. -*/ -#define LUA_COMPAT_LOADSTRING - -/* -@@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library. -*/ -#define LUA_COMPAT_MAXN - -/* -@@ The following macros supply trivial compatibility for some -** changes in the API. The macros themselves document how to -** change your code to avoid using them. -*/ -#define lua_strlen(L,i) lua_rawlen(L, (i)) - -#define lua_objlen(L,i) lua_rawlen(L, (i)) - -#define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ) -#define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT) - -/* -@@ LUA_COMPAT_MODULE controls compatibility with previous -** module functions 'module' (Lua) and 'luaL_register' (C). -*/ -#define LUA_COMPAT_MODULE - -#endif /* } */ - - -/* -@@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a -@@ a float mark ('.0'). -** This macro is not on by default even in compatibility mode, -** because this is not really an incompatibility. -*/ -/* #define LUA_COMPAT_FLOATSTRING */ - -/* }================================================================== */ - - - -/* -** {================================================================== -** Configuration for Numbers. -** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_* -** satisfy your needs. -** =================================================================== -*/ - -/* -@@ LUA_NUMBER is the floating-point type used by Lua. -@@ LUAI_UACNUMBER is the result of a 'default argument promotion' -@@ over a floating number. -@@ l_mathlim(x) corrects limit name 'x' to the proper float type -** by prefixing it with one of FLT/DBL/LDBL. -@@ LUA_NUMBER_FRMLEN is the length modifier for writing floats. -@@ LUA_NUMBER_FMT is the format for writing floats. -@@ lua_number2str converts a float to a string. -@@ l_mathop allows the addition of an 'l' or 'f' to all math operations. -@@ l_floor takes the floor of a float. -@@ lua_str2number converts a decimal numeric string to a number. -*/ - - -/* The following definitions are good for most cases here */ - -#define l_floor(x) (l_mathop(floor)(x)) - -#define lua_number2str(s,sz,n) \ - l_sprintf((s), sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)(n)) - -/* -@@ lua_numbertointeger converts a float number to an integer, or -** returns 0 if float is not within the range of a lua_Integer. -** (The range comparisons are tricky because of rounding. The tests -** here assume a two-complement representation, where MININTEGER always -** has an exact representation as a float; MAXINTEGER may not have one, -** and therefore its conversion to float may have an ill-defined value.) -*/ -#define lua_numbertointeger(n,p) \ - ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \ - (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \ - (*(p) = (LUA_INTEGER)(n), 1)) - - -/* now the variable definitions */ - -#if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT /* { single float */ - -#define LUA_NUMBER float - -#define l_mathlim(n) (FLT_##n) - -#define LUAI_UACNUMBER double - -#define LUA_NUMBER_FRMLEN "" -#define LUA_NUMBER_FMT "%.7g" - -#define l_mathop(op) op##f - -#define lua_str2number(s,p) strtof((s), (p)) - - -#elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE /* }{ long double */ - -#define LUA_NUMBER long double - -#define l_mathlim(n) (LDBL_##n) - -#define LUAI_UACNUMBER long double - -#define LUA_NUMBER_FRMLEN "L" -#define LUA_NUMBER_FMT "%.19Lg" - -#define l_mathop(op) op##l - -#define lua_str2number(s,p) strtold((s), (p)) - -#elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE /* }{ double */ - -#define LUA_NUMBER double - -#define l_mathlim(n) (DBL_##n) - -#define LUAI_UACNUMBER double - -#define LUA_NUMBER_FRMLEN "" -#define LUA_NUMBER_FMT "%.14g" - -#define l_mathop(op) op - -#define lua_str2number(s,p) strtod((s), (p)) - -#else /* }{ */ - -#error "numeric float type not defined" - -#endif /* } */ - - - -/* -@@ LUA_INTEGER is the integer type used by Lua. -** -@@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER. -** -@@ LUAI_UACINT is the result of a 'default argument promotion' -@@ over a lUA_INTEGER. -@@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers. -@@ LUA_INTEGER_FMT is the format for writing integers. -@@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER. -@@ LUA_MININTEGER is the minimum value for a LUA_INTEGER. -@@ lua_integer2str converts an integer to a string. -*/ - - -/* The following definitions are good for most cases here */ - -#define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d" - -#define LUAI_UACINT LUA_INTEGER - -#define lua_integer2str(s,sz,n) \ - l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n)) - -/* -** use LUAI_UACINT here to avoid problems with promotions (which -** can turn a comparison between unsigneds into a signed comparison) -*/ -#define LUA_UNSIGNED unsigned LUAI_UACINT - - -/* now the variable definitions */ - -#if LUA_INT_TYPE == LUA_INT_INT /* { int */ - -#define LUA_INTEGER int -#define LUA_INTEGER_FRMLEN "" - -#define LUA_MAXINTEGER INT_MAX -#define LUA_MININTEGER INT_MIN - -#elif LUA_INT_TYPE == LUA_INT_LONG /* }{ long */ - -#define LUA_INTEGER long -#define LUA_INTEGER_FRMLEN "l" - -#define LUA_MAXINTEGER LONG_MAX -#define LUA_MININTEGER LONG_MIN - -#elif LUA_INT_TYPE == LUA_INT_LONGLONG /* }{ long long */ - -/* use presence of macro LLONG_MAX as proxy for C99 compliance */ -#if defined(LLONG_MAX) /* { */ -/* use ISO C99 stuff */ - -#define LUA_INTEGER long long -#define LUA_INTEGER_FRMLEN "ll" - -#define LUA_MAXINTEGER LLONG_MAX -#define LUA_MININTEGER LLONG_MIN - -#elif defined(LUA_USE_WINDOWS) /* }{ */ -/* in Windows, can use specific Windows types */ - -#define LUA_INTEGER __int64 -#define LUA_INTEGER_FRMLEN "I64" - -#define LUA_MAXINTEGER _I64_MAX -#define LUA_MININTEGER _I64_MIN - -#else /* }{ */ - -#error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \ - or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)" - -#endif /* } */ - -#else /* }{ */ - -#error "numeric integer type not defined" - -#endif /* } */ - -/* }================================================================== */ - - -/* -** {================================================================== -** Dependencies with C99 and other C details -** =================================================================== -*/ - -/* -@@ l_sprintf is equivalent to 'snprintf' or 'sprintf' in C89. -** (All uses in Lua have only one format item.) -*/ -#if !defined(LUA_USE_C89) -#define l_sprintf(s,sz,f,i) snprintf(s,sz,f,i) -#else -#define l_sprintf(s,sz,f,i) ((void)(sz), sprintf(s,f,i)) -#endif - - -/* -@@ lua_strx2number converts an hexadecimal numeric string to a number. -** In C99, 'strtod' does that conversion. Otherwise, you can -** leave 'lua_strx2number' undefined and Lua will provide its own -** implementation. -*/ -#if !defined(LUA_USE_C89) -#define lua_strx2number(s,p) lua_str2number(s,p) -#endif - - -/* -@@ lua_number2strx converts a float to an hexadecimal numeric string. -** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that. -** Otherwise, you can leave 'lua_number2strx' undefined and Lua will -** provide its own implementation. -*/ -#if !defined(LUA_USE_C89) -#define lua_number2strx(L,b,sz,f,n) \ - ((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n))) -#endif - - -/* -** 'strtof' and 'opf' variants for math functions are not valid in -** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the -** availability of these variants. ('math.h' is already included in -** all files that use these macros.) -*/ -#if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF)) -#undef l_mathop /* variants not available */ -#undef lua_str2number -#define l_mathop(op) (lua_Number)op /* no variant */ -#define lua_str2number(s,p) ((lua_Number)strtod((s), (p))) -#endif - - -/* -@@ LUA_KCONTEXT is the type of the context ('ctx') for continuation -** functions. It must be a numerical type; Lua will use 'intptr_t' if -** available, otherwise it will use 'ptrdiff_t' (the nearest thing to -** 'intptr_t' in C89) -*/ -#define LUA_KCONTEXT ptrdiff_t - -#if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \ - __STDC_VERSION__ >= 199901L -#include -#if defined(INTPTR_MAX) /* even in C99 this type is optional */ -#undef LUA_KCONTEXT -#define LUA_KCONTEXT intptr_t -#endif -#endif - - -/* -@@ lua_getlocaledecpoint gets the locale "radix character" (decimal point). -** Change that if you do not want to use C locales. (Code using this -** macro must include header 'locale.h'.) -*/ -#if !defined(lua_getlocaledecpoint) -#define lua_getlocaledecpoint() (localeconv()->decimal_point[0]) -#endif - -/* }================================================================== */ - - -/* -** {================================================================== -** Language Variations -** ===================================================================== -*/ - -/* -@@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some -** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from -** numbers to strings. Define LUA_NOCVTS2N to turn off automatic -** coercion from strings to numbers. -*/ -/* #define LUA_NOCVTN2S */ -/* #define LUA_NOCVTS2N */ - - -/* -@@ LUA_USE_APICHECK turns on several consistency checks on the C API. -** Define it as a help when debugging C code. -*/ -#if defined(LUA_USE_APICHECK) -#include -#define luai_apicheck(l,e) assert(e) -#endif - -/* }================================================================== */ - - -/* -** {================================================================== -** Macros that affect the API and must be stable (that is, must be the -** same when you compile Lua and when you compile code that links to -** Lua). You probably do not want/need to change them. -** ===================================================================== -*/ - -/* -@@ LUAI_MAXSTACK limits the size of the Lua stack. -** CHANGE it if you need a different limit. This limit is arbitrary; -** its only purpose is to stop Lua from consuming unlimited stack -** space (and to reserve some numbers for pseudo-indices). -*/ -#if LUAI_BITSINT >= 32 -#define LUAI_MAXSTACK 1000000 -#else -#define LUAI_MAXSTACK 15000 -#endif - - -/* -@@ LUA_EXTRASPACE defines the size of a raw memory area associated with -** a Lua state with very fast access. -** CHANGE it if you need a different size. -*/ -#define LUA_EXTRASPACE (sizeof(void *)) - - -/* -@@ LUA_IDSIZE gives the maximum size for the description of the source -@@ of a function in debug information. -** CHANGE it if you want a different size. -*/ -#define LUA_IDSIZE 60 - - -/* -@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. -** CHANGE it if it uses too much C-stack space. (For long double, -** 'string.format("%.99f", -1e4932)' needs 5034 bytes, so a -** smaller buffer would force a memory allocation for each call to -** 'string.format'.) -*/ -#if LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE -#define LUAL_BUFFERSIZE 8192 -#else -#define LUAL_BUFFERSIZE ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer))) -#endif - -/* }================================================================== */ - - -/* -@@ LUA_QL describes how error messages quote program elements. -** Lua does not use these macros anymore; they are here for -** compatibility only. -*/ -#define LUA_QL(x) "'" x "'" -#define LUA_QS LUA_QL("%s") - - - - -/* =================================================================== */ - -/* -** Local configuration. You can use this space to add your redefinitions -** without modifying the main part of the file. -*/ - - - - - -#endif - diff --git a/deps/rcheevos/test/lua/src/lualib.h b/deps/rcheevos/test/lua/src/lualib.h deleted file mode 100644 index 6c0bc4cb08..0000000000 --- a/deps/rcheevos/test/lua/src/lualib.h +++ /dev/null @@ -1,61 +0,0 @@ -/* -** $Id: lualib.h,v 1.45 2017/01/12 17:14:26 roberto Exp $ -** Lua standard libraries -** See Copyright Notice in lua.h -*/ - - -#ifndef lualib_h -#define lualib_h - -#include "lua.h" - - -/* version suffix for environment variable names */ -#define LUA_VERSUFFIX "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR - - -LUAMOD_API int (luaopen_base) (lua_State *L); - -#define LUA_COLIBNAME "coroutine" -LUAMOD_API int (luaopen_coroutine) (lua_State *L); - -#define LUA_TABLIBNAME "table" -LUAMOD_API int (luaopen_table) (lua_State *L); - -#define LUA_IOLIBNAME "io" -LUAMOD_API int (luaopen_io) (lua_State *L); - -#define LUA_OSLIBNAME "os" -LUAMOD_API int (luaopen_os) (lua_State *L); - -#define LUA_STRLIBNAME "string" -LUAMOD_API int (luaopen_string) (lua_State *L); - -#define LUA_UTF8LIBNAME "utf8" -LUAMOD_API int (luaopen_utf8) (lua_State *L); - -#define LUA_BITLIBNAME "bit32" -LUAMOD_API int (luaopen_bit32) (lua_State *L); - -#define LUA_MATHLIBNAME "math" -LUAMOD_API int (luaopen_math) (lua_State *L); - -#define LUA_DBLIBNAME "debug" -LUAMOD_API int (luaopen_debug) (lua_State *L); - -#define LUA_LOADLIBNAME "package" -LUAMOD_API int (luaopen_package) (lua_State *L); - - -/* open all previous libraries */ -LUALIB_API void (luaL_openlibs) (lua_State *L); - - - -#if !defined(lua_assert) -#define lua_assert(x) ((void)0) -#endif - - -#endif diff --git a/deps/rcheevos/test/lua/src/lundump.c b/deps/rcheevos/test/lua/src/lundump.c deleted file mode 100644 index 4080af9c0d..0000000000 --- a/deps/rcheevos/test/lua/src/lundump.c +++ /dev/null @@ -1,279 +0,0 @@ -/* -** $Id: lundump.c,v 2.44 2015/11/02 16:09:30 roberto Exp $ -** load precompiled Lua chunks -** See Copyright Notice in lua.h -*/ - -#define lundump_c -#define LUA_CORE - -#include "lprefix.h" - - -#include - -#include "lua.h" - -#include "ldebug.h" -#include "ldo.h" -#include "lfunc.h" -#include "lmem.h" -#include "lobject.h" -#include "lstring.h" -#include "lundump.h" -#include "lzio.h" - - -#if !defined(luai_verifycode) -#define luai_verifycode(L,b,f) /* empty */ -#endif - - -typedef struct { - lua_State *L; - ZIO *Z; - const char *name; -} LoadState; - - -static l_noret error(LoadState *S, const char *why) { - luaO_pushfstring(S->L, "%s: %s precompiled chunk", S->name, why); - luaD_throw(S->L, LUA_ERRSYNTAX); -} - - -/* -** All high-level loads go through LoadVector; you can change it to -** adapt to the endianness of the input -*/ -#define LoadVector(S,b,n) LoadBlock(S,b,(n)*sizeof((b)[0])) - -static void LoadBlock (LoadState *S, void *b, size_t size) { - if (luaZ_read(S->Z, b, size) != 0) - error(S, "truncated"); -} - - -#define LoadVar(S,x) LoadVector(S,&x,1) - - -static lu_byte LoadByte (LoadState *S) { - lu_byte x; - LoadVar(S, x); - return x; -} - - -static int LoadInt (LoadState *S) { - int x; - LoadVar(S, x); - return x; -} - - -static lua_Number LoadNumber (LoadState *S) { - lua_Number x; - LoadVar(S, x); - return x; -} - - -static lua_Integer LoadInteger (LoadState *S) { - lua_Integer x; - LoadVar(S, x); - return x; -} - - -static TString *LoadString (LoadState *S) { - size_t size = LoadByte(S); - if (size == 0xFF) - LoadVar(S, size); - if (size == 0) - return NULL; - else if (--size <= LUAI_MAXSHORTLEN) { /* short string? */ - char buff[LUAI_MAXSHORTLEN]; - LoadVector(S, buff, size); - return luaS_newlstr(S->L, buff, size); - } - else { /* long string */ - TString *ts = luaS_createlngstrobj(S->L, size); - LoadVector(S, getstr(ts), size); /* load directly in final place */ - return ts; - } -} - - -static void LoadCode (LoadState *S, Proto *f) { - int n = LoadInt(S); - f->code = luaM_newvector(S->L, n, Instruction); - f->sizecode = n; - LoadVector(S, f->code, n); -} - - -static void LoadFunction(LoadState *S, Proto *f, TString *psource); - - -static void LoadConstants (LoadState *S, Proto *f) { - int i; - int n = LoadInt(S); - f->k = luaM_newvector(S->L, n, TValue); - f->sizek = n; - for (i = 0; i < n; i++) - setnilvalue(&f->k[i]); - for (i = 0; i < n; i++) { - TValue *o = &f->k[i]; - int t = LoadByte(S); - switch (t) { - case LUA_TNIL: - setnilvalue(o); - break; - case LUA_TBOOLEAN: - setbvalue(o, LoadByte(S)); - break; - case LUA_TNUMFLT: - setfltvalue(o, LoadNumber(S)); - break; - case LUA_TNUMINT: - setivalue(o, LoadInteger(S)); - break; - case LUA_TSHRSTR: - case LUA_TLNGSTR: - setsvalue2n(S->L, o, LoadString(S)); - break; - default: - lua_assert(0); - } - } -} - - -static void LoadProtos (LoadState *S, Proto *f) { - int i; - int n = LoadInt(S); - f->p = luaM_newvector(S->L, n, Proto *); - f->sizep = n; - for (i = 0; i < n; i++) - f->p[i] = NULL; - for (i = 0; i < n; i++) { - f->p[i] = luaF_newproto(S->L); - LoadFunction(S, f->p[i], f->source); - } -} - - -static void LoadUpvalues (LoadState *S, Proto *f) { - int i, n; - n = LoadInt(S); - f->upvalues = luaM_newvector(S->L, n, Upvaldesc); - f->sizeupvalues = n; - for (i = 0; i < n; i++) - f->upvalues[i].name = NULL; - for (i = 0; i < n; i++) { - f->upvalues[i].instack = LoadByte(S); - f->upvalues[i].idx = LoadByte(S); - } -} - - -static void LoadDebug (LoadState *S, Proto *f) { - int i, n; - n = LoadInt(S); - f->lineinfo = luaM_newvector(S->L, n, int); - f->sizelineinfo = n; - LoadVector(S, f->lineinfo, n); - n = LoadInt(S); - f->locvars = luaM_newvector(S->L, n, LocVar); - f->sizelocvars = n; - for (i = 0; i < n; i++) - f->locvars[i].varname = NULL; - for (i = 0; i < n; i++) { - f->locvars[i].varname = LoadString(S); - f->locvars[i].startpc = LoadInt(S); - f->locvars[i].endpc = LoadInt(S); - } - n = LoadInt(S); - for (i = 0; i < n; i++) - f->upvalues[i].name = LoadString(S); -} - - -static void LoadFunction (LoadState *S, Proto *f, TString *psource) { - f->source = LoadString(S); - if (f->source == NULL) /* no source in dump? */ - f->source = psource; /* reuse parent's source */ - f->linedefined = LoadInt(S); - f->lastlinedefined = LoadInt(S); - f->numparams = LoadByte(S); - f->is_vararg = LoadByte(S); - f->maxstacksize = LoadByte(S); - LoadCode(S, f); - LoadConstants(S, f); - LoadUpvalues(S, f); - LoadProtos(S, f); - LoadDebug(S, f); -} - - -static void checkliteral (LoadState *S, const char *s, const char *msg) { - char buff[sizeof(LUA_SIGNATURE) + sizeof(LUAC_DATA)]; /* larger than both */ - size_t len = strlen(s); - LoadVector(S, buff, len); - if (memcmp(s, buff, len) != 0) - error(S, msg); -} - - -static void fchecksize (LoadState *S, size_t size, const char *tname) { - if (LoadByte(S) != size) - error(S, luaO_pushfstring(S->L, "%s size mismatch in", tname)); -} - - -#define checksize(S,t) fchecksize(S,sizeof(t),#t) - -static void checkHeader (LoadState *S) { - checkliteral(S, LUA_SIGNATURE + 1, "not a"); /* 1st char already checked */ - if (LoadByte(S) != LUAC_VERSION) - error(S, "version mismatch in"); - if (LoadByte(S) != LUAC_FORMAT) - error(S, "format mismatch in"); - checkliteral(S, LUAC_DATA, "corrupted"); - checksize(S, int); - checksize(S, size_t); - checksize(S, Instruction); - checksize(S, lua_Integer); - checksize(S, lua_Number); - if (LoadInteger(S) != LUAC_INT) - error(S, "endianness mismatch in"); - if (LoadNumber(S) != LUAC_NUM) - error(S, "float format mismatch in"); -} - - -/* -** load precompiled chunk -*/ -LClosure *luaU_undump(lua_State *L, ZIO *Z, const char *name) { - LoadState S; - LClosure *cl; - if (*name == '@' || *name == '=') - S.name = name + 1; - else if (*name == LUA_SIGNATURE[0]) - S.name = "binary string"; - else - S.name = name; - S.L = L; - S.Z = Z; - checkHeader(&S); - cl = luaF_newLclosure(L, LoadByte(&S)); - setclLvalue(L, L->top, cl); - luaD_inctop(L); - cl->p = luaF_newproto(L); - LoadFunction(&S, cl->p, NULL); - lua_assert(cl->nupvalues == cl->p->sizeupvalues); - luai_verifycode(L, buff, cl->p); - return cl; -} - diff --git a/deps/rcheevos/test/lua/src/lundump.h b/deps/rcheevos/test/lua/src/lundump.h deleted file mode 100644 index aa5cc82f1b..0000000000 --- a/deps/rcheevos/test/lua/src/lundump.h +++ /dev/null @@ -1,32 +0,0 @@ -/* -** $Id: lundump.h,v 1.45 2015/09/08 15:41:05 roberto Exp $ -** load precompiled Lua chunks -** See Copyright Notice in lua.h -*/ - -#ifndef lundump_h -#define lundump_h - -#include "llimits.h" -#include "lobject.h" -#include "lzio.h" - - -/* data to catch conversion errors */ -#define LUAC_DATA "\x19\x93\r\n\x1a\n" - -#define LUAC_INT 0x5678 -#define LUAC_NUM cast_num(370.5) - -#define MYINT(s) (s[0]-'0') -#define LUAC_VERSION (MYINT(LUA_VERSION_MAJOR)*16+MYINT(LUA_VERSION_MINOR)) -#define LUAC_FORMAT 0 /* this is the official format */ - -/* load one chunk; from lundump.c */ -LUAI_FUNC LClosure* luaU_undump (lua_State* L, ZIO* Z, const char* name); - -/* dump one chunk; from ldump.c */ -LUAI_FUNC int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, - void* data, int strip); - -#endif diff --git a/deps/rcheevos/test/lua/src/lutf8lib.c b/deps/rcheevos/test/lua/src/lutf8lib.c deleted file mode 100644 index de9e3dcdd6..0000000000 --- a/deps/rcheevos/test/lua/src/lutf8lib.c +++ /dev/null @@ -1,256 +0,0 @@ -/* -** $Id: lutf8lib.c,v 1.16 2016/12/22 13:08:50 roberto Exp $ -** Standard library for UTF-8 manipulation -** See Copyright Notice in lua.h -*/ - -#define lutf8lib_c -#define LUA_LIB - -#include "lprefix.h" - - -#include -#include -#include -#include - -#include "lua.h" - -#include "lauxlib.h" -#include "lualib.h" - -#define MAXUNICODE 0x10FFFF - -#define iscont(p) ((*(p) & 0xC0) == 0x80) - - -/* from strlib */ -/* translate a relative string position: negative means back from end */ -static lua_Integer u_posrelat (lua_Integer pos, size_t len) { - if (pos >= 0) return pos; - else if (0u - (size_t)pos > len) return 0; - else return (lua_Integer)len + pos + 1; -} - - -/* -** Decode one UTF-8 sequence, returning NULL if byte sequence is invalid. -*/ -static const char *utf8_decode (const char *o, int *val) { - static const unsigned int limits[] = {0xFF, 0x7F, 0x7FF, 0xFFFF}; - const unsigned char *s = (const unsigned char *)o; - unsigned int c = s[0]; - unsigned int res = 0; /* final result */ - if (c < 0x80) /* ascii? */ - res = c; - else { - int count = 0; /* to count number of continuation bytes */ - while (c & 0x40) { /* still have continuation bytes? */ - int cc = s[++count]; /* read next byte */ - if ((cc & 0xC0) != 0x80) /* not a continuation byte? */ - return NULL; /* invalid byte sequence */ - res = (res << 6) | (cc & 0x3F); /* add lower 6 bits from cont. byte */ - c <<= 1; /* to test next bit */ - } - res |= ((c & 0x7F) << (count * 5)); /* add first byte */ - if (count > 3 || res > MAXUNICODE || res <= limits[count]) - return NULL; /* invalid byte sequence */ - s += count; /* skip continuation bytes read */ - } - if (val) *val = res; - return (const char *)s + 1; /* +1 to include first byte */ -} - - -/* -** utf8len(s [, i [, j]]) --> number of characters that start in the -** range [i,j], or nil + current position if 's' is not well formed in -** that interval -*/ -static int utflen (lua_State *L) { - int n = 0; - size_t len; - const char *s = luaL_checklstring(L, 1, &len); - lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len); - lua_Integer posj = u_posrelat(luaL_optinteger(L, 3, -1), len); - luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 2, - "initial position out of string"); - luaL_argcheck(L, --posj < (lua_Integer)len, 3, - "final position out of string"); - while (posi <= posj) { - const char *s1 = utf8_decode(s + posi, NULL); - if (s1 == NULL) { /* conversion error? */ - lua_pushnil(L); /* return nil ... */ - lua_pushinteger(L, posi + 1); /* ... and current position */ - return 2; - } - posi = s1 - s; - n++; - } - lua_pushinteger(L, n); - return 1; -} - - -/* -** codepoint(s, [i, [j]]) -> returns codepoints for all characters -** that start in the range [i,j] -*/ -static int codepoint (lua_State *L) { - size_t len; - const char *s = luaL_checklstring(L, 1, &len); - lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len); - lua_Integer pose = u_posrelat(luaL_optinteger(L, 3, posi), len); - int n; - const char *se; - luaL_argcheck(L, posi >= 1, 2, "out of range"); - luaL_argcheck(L, pose <= (lua_Integer)len, 3, "out of range"); - if (posi > pose) return 0; /* empty interval; return no values */ - if (pose - posi >= INT_MAX) /* (lua_Integer -> int) overflow? */ - return luaL_error(L, "string slice too long"); - n = (int)(pose - posi) + 1; - luaL_checkstack(L, n, "string slice too long"); - n = 0; - se = s + pose; - for (s += posi - 1; s < se;) { - int code; - s = utf8_decode(s, &code); - if (s == NULL) - return luaL_error(L, "invalid UTF-8 code"); - lua_pushinteger(L, code); - n++; - } - return n; -} - - -static void pushutfchar (lua_State *L, int arg) { - lua_Integer code = luaL_checkinteger(L, arg); - luaL_argcheck(L, 0 <= code && code <= MAXUNICODE, arg, "value out of range"); - lua_pushfstring(L, "%U", (long)code); -} - - -/* -** utfchar(n1, n2, ...) -> char(n1)..char(n2)... -*/ -static int utfchar (lua_State *L) { - int n = lua_gettop(L); /* number of arguments */ - if (n == 1) /* optimize common case of single char */ - pushutfchar(L, 1); - else { - int i; - luaL_Buffer b; - luaL_buffinit(L, &b); - for (i = 1; i <= n; i++) { - pushutfchar(L, i); - luaL_addvalue(&b); - } - luaL_pushresult(&b); - } - return 1; -} - - -/* -** offset(s, n, [i]) -> index where n-th character counting from -** position 'i' starts; 0 means character at 'i'. -*/ -static int byteoffset (lua_State *L) { - size_t len; - const char *s = luaL_checklstring(L, 1, &len); - lua_Integer n = luaL_checkinteger(L, 2); - lua_Integer posi = (n >= 0) ? 1 : len + 1; - posi = u_posrelat(luaL_optinteger(L, 3, posi), len); - luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 3, - "position out of range"); - if (n == 0) { - /* find beginning of current byte sequence */ - while (posi > 0 && iscont(s + posi)) posi--; - } - else { - if (iscont(s + posi)) - luaL_error(L, "initial position is a continuation byte"); - if (n < 0) { - while (n < 0 && posi > 0) { /* move back */ - do { /* find beginning of previous character */ - posi--; - } while (posi > 0 && iscont(s + posi)); - n++; - } - } - else { - n--; /* do not move for 1st character */ - while (n > 0 && posi < (lua_Integer)len) { - do { /* find beginning of next character */ - posi++; - } while (iscont(s + posi)); /* (cannot pass final '\0') */ - n--; - } - } - } - if (n == 0) /* did it find given character? */ - lua_pushinteger(L, posi + 1); - else /* no such character */ - lua_pushnil(L); - return 1; -} - - -static int iter_aux (lua_State *L) { - size_t len; - const char *s = luaL_checklstring(L, 1, &len); - lua_Integer n = lua_tointeger(L, 2) - 1; - if (n < 0) /* first iteration? */ - n = 0; /* start from here */ - else if (n < (lua_Integer)len) { - n++; /* skip current byte */ - while (iscont(s + n)) n++; /* and its continuations */ - } - if (n >= (lua_Integer)len) - return 0; /* no more codepoints */ - else { - int code; - const char *next = utf8_decode(s + n, &code); - if (next == NULL || iscont(next)) - return luaL_error(L, "invalid UTF-8 code"); - lua_pushinteger(L, n + 1); - lua_pushinteger(L, code); - return 2; - } -} - - -static int iter_codes (lua_State *L) { - luaL_checkstring(L, 1); - lua_pushcfunction(L, iter_aux); - lua_pushvalue(L, 1); - lua_pushinteger(L, 0); - return 3; -} - - -/* pattern to match a single UTF-8 character */ -#define UTF8PATT "[\0-\x7F\xC2-\xF4][\x80-\xBF]*" - - -static const luaL_Reg funcs[] = { - {"offset", byteoffset}, - {"codepoint", codepoint}, - {"char", utfchar}, - {"len", utflen}, - {"codes", iter_codes}, - /* placeholders */ - {"charpattern", NULL}, - {NULL, NULL} -}; - - -LUAMOD_API int luaopen_utf8 (lua_State *L) { - luaL_newlib(L, funcs); - lua_pushlstring(L, UTF8PATT, sizeof(UTF8PATT)/sizeof(char) - 1); - lua_setfield(L, -2, "charpattern"); - return 1; -} - diff --git a/deps/rcheevos/test/lua/src/lvm.c b/deps/rcheevos/test/lua/src/lvm.c deleted file mode 100644 index 84ade6b2fa..0000000000 --- a/deps/rcheevos/test/lua/src/lvm.c +++ /dev/null @@ -1,1322 +0,0 @@ -/* -** $Id: lvm.c,v 2.268 2016/02/05 19:59:14 roberto Exp $ -** Lua virtual machine -** See Copyright Notice in lua.h -*/ - -#define lvm_c -#define LUA_CORE - -#include "lprefix.h" - -#include -#include -#include -#include -#include -#include - -#include "lua.h" - -#include "ldebug.h" -#include "ldo.h" -#include "lfunc.h" -#include "lgc.h" -#include "lobject.h" -#include "lopcodes.h" -#include "lstate.h" -#include "lstring.h" -#include "ltable.h" -#include "ltm.h" -#include "lvm.h" - - -/* limit for table tag-method chains (to avoid loops) */ -#define MAXTAGLOOP 2000 - - - -/* -** 'l_intfitsf' checks whether a given integer can be converted to a -** float without rounding. Used in comparisons. Left undefined if -** all integers fit in a float precisely. -*/ -#if !defined(l_intfitsf) - -/* number of bits in the mantissa of a float */ -#define NBM (l_mathlim(MANT_DIG)) - -/* -** Check whether some integers may not fit in a float, that is, whether -** (maxinteger >> NBM) > 0 (that implies (1 << NBM) <= maxinteger). -** (The shifts are done in parts to avoid shifting by more than the size -** of an integer. In a worst case, NBM == 113 for long double and -** sizeof(integer) == 32.) -*/ -#if ((((LUA_MAXINTEGER >> (NBM / 4)) >> (NBM / 4)) >> (NBM / 4)) \ - >> (NBM - (3 * (NBM / 4)))) > 0 - -#define l_intfitsf(i) \ - (-((lua_Integer)1 << NBM) <= (i) && (i) <= ((lua_Integer)1 << NBM)) - -#endif - -#endif - - - -/* -** Try to convert a value to a float. The float case is already handled -** by the macro 'tonumber'. -*/ -int luaV_tonumber_ (const TValue *obj, lua_Number *n) { - TValue v; - if (ttisinteger(obj)) { - *n = cast_num(ivalue(obj)); - return 1; - } - else if (cvt2num(obj) && /* string convertible to number? */ - luaO_str2num(svalue(obj), &v) == vslen(obj) + 1) { - *n = nvalue(&v); /* convert result of 'luaO_str2num' to a float */ - return 1; - } - else - return 0; /* conversion failed */ -} - - -/* -** try to convert a value to an integer, rounding according to 'mode': -** mode == 0: accepts only integral values -** mode == 1: takes the floor of the number -** mode == 2: takes the ceil of the number -*/ -int luaV_tointeger (const TValue *obj, lua_Integer *p, int mode) { - TValue v; - again: - if (ttisfloat(obj)) { - lua_Number n = fltvalue(obj); - lua_Number f = l_floor(n); - if (n != f) { /* not an integral value? */ - if (mode == 0) return 0; /* fails if mode demands integral value */ - else if (mode > 1) /* needs ceil? */ - f += 1; /* convert floor to ceil (remember: n != f) */ - } - return lua_numbertointeger(f, p); - } - else if (ttisinteger(obj)) { - *p = ivalue(obj); - return 1; - } - else if (cvt2num(obj) && - luaO_str2num(svalue(obj), &v) == vslen(obj) + 1) { - obj = &v; - goto again; /* convert result from 'luaO_str2num' to an integer */ - } - return 0; /* conversion failed */ -} - - -/* -** Try to convert a 'for' limit to an integer, preserving the -** semantics of the loop. -** (The following explanation assumes a non-negative step; it is valid -** for negative steps mutatis mutandis.) -** If the limit can be converted to an integer, rounding down, that is -** it. -** Otherwise, check whether the limit can be converted to a number. If -** the number is too large, it is OK to set the limit as LUA_MAXINTEGER, -** which means no limit. If the number is too negative, the loop -** should not run, because any initial integer value is larger than the -** limit. So, it sets the limit to LUA_MININTEGER. 'stopnow' corrects -** the extreme case when the initial value is LUA_MININTEGER, in which -** case the LUA_MININTEGER limit would still run the loop once. -*/ -static int forlimit (const TValue *obj, lua_Integer *p, lua_Integer step, - int *stopnow) { - *stopnow = 0; /* usually, let loops run */ - if (!luaV_tointeger(obj, p, (step < 0 ? 2 : 1))) { /* not fit in integer? */ - lua_Number n; /* try to convert to float */ - if (!tonumber(obj, &n)) /* cannot convert to float? */ - return 0; /* not a number */ - if (luai_numlt(0, n)) { /* if true, float is larger than max integer */ - *p = LUA_MAXINTEGER; - if (step < 0) *stopnow = 1; - } - else { /* float is smaller than min integer */ - *p = LUA_MININTEGER; - if (step >= 0) *stopnow = 1; - } - } - return 1; -} - - -/* -** Finish the table access 'val = t[key]'. -** if 'slot' is NULL, 't' is not a table; otherwise, 'slot' points to -** t[k] entry (which must be nil). -*/ -void luaV_finishget (lua_State *L, const TValue *t, TValue *key, StkId val, - const TValue *slot) { - int loop; /* counter to avoid infinite loops */ - const TValue *tm; /* metamethod */ - for (loop = 0; loop < MAXTAGLOOP; loop++) { - if (slot == NULL) { /* 't' is not a table? */ - lua_assert(!ttistable(t)); - tm = luaT_gettmbyobj(L, t, TM_INDEX); - if (ttisnil(tm)) - luaG_typeerror(L, t, "index"); /* no metamethod */ - /* else will try the metamethod */ - } - else { /* 't' is a table */ - lua_assert(ttisnil(slot)); - tm = fasttm(L, hvalue(t)->metatable, TM_INDEX); /* table's metamethod */ - if (tm == NULL) { /* no metamethod? */ - setnilvalue(val); /* result is nil */ - return; - } - /* else will try the metamethod */ - } - if (ttisfunction(tm)) { /* is metamethod a function? */ - luaT_callTM(L, tm, t, key, val, 1); /* call it */ - return; - } - t = tm; /* else try to access 'tm[key]' */ - if (luaV_fastget(L,t,key,slot,luaH_get)) { /* fast track? */ - setobj2s(L, val, slot); /* done */ - return; - } - /* else repeat (tail call 'luaV_finishget') */ - } - luaG_runerror(L, "'__index' chain too long; possible loop"); -} - - -/* -** Finish a table assignment 't[key] = val'. -** If 'slot' is NULL, 't' is not a table. Otherwise, 'slot' points -** to the entry 't[key]', or to 'luaO_nilobject' if there is no such -** entry. (The value at 'slot' must be nil, otherwise 'luaV_fastset' -** would have done the job.) -*/ -void luaV_finishset (lua_State *L, const TValue *t, TValue *key, - StkId val, const TValue *slot) { - int loop; /* counter to avoid infinite loops */ - for (loop = 0; loop < MAXTAGLOOP; loop++) { - const TValue *tm; /* '__newindex' metamethod */ - if (slot != NULL) { /* is 't' a table? */ - Table *h = hvalue(t); /* save 't' table */ - lua_assert(ttisnil(slot)); /* old value must be nil */ - tm = fasttm(L, h->metatable, TM_NEWINDEX); /* get metamethod */ - if (tm == NULL) { /* no metamethod? */ - if (slot == luaO_nilobject) /* no previous entry? */ - slot = luaH_newkey(L, h, key); /* create one */ - /* no metamethod and (now) there is an entry with given key */ - setobj2t(L, cast(TValue *, slot), val); /* set its new value */ - invalidateTMcache(h); - luaC_barrierback(L, h, val); - return; - } - /* else will try the metamethod */ - } - else { /* not a table; check metamethod */ - if (ttisnil(tm = luaT_gettmbyobj(L, t, TM_NEWINDEX))) - luaG_typeerror(L, t, "index"); - } - /* try the metamethod */ - if (ttisfunction(tm)) { - luaT_callTM(L, tm, t, key, val, 0); - return; - } - t = tm; /* else repeat assignment over 'tm' */ - if (luaV_fastset(L, t, key, slot, luaH_get, val)) - return; /* done */ - /* else loop */ - } - luaG_runerror(L, "'__newindex' chain too long; possible loop"); -} - - -/* -** Compare two strings 'ls' x 'rs', returning an integer smaller-equal- -** -larger than zero if 'ls' is smaller-equal-larger than 'rs'. -** The code is a little tricky because it allows '\0' in the strings -** and it uses 'strcoll' (to respect locales) for each segments -** of the strings. -*/ -static int l_strcmp (const TString *ls, const TString *rs) { - const char *l = getstr(ls); - size_t ll = tsslen(ls); - const char *r = getstr(rs); - size_t lr = tsslen(rs); - for (;;) { /* for each segment */ - int temp = strcoll(l, r); - if (temp != 0) /* not equal? */ - return temp; /* done */ - else { /* strings are equal up to a '\0' */ - size_t len = strlen(l); /* index of first '\0' in both strings */ - if (len == lr) /* 'rs' is finished? */ - return (len == ll) ? 0 : 1; /* check 'ls' */ - else if (len == ll) /* 'ls' is finished? */ - return -1; /* 'ls' is smaller than 'rs' ('rs' is not finished) */ - /* both strings longer than 'len'; go on comparing after the '\0' */ - len++; - l += len; ll -= len; r += len; lr -= len; - } - } -} - - -/* -** Check whether integer 'i' is less than float 'f'. If 'i' has an -** exact representation as a float ('l_intfitsf'), compare numbers as -** floats. Otherwise, if 'f' is outside the range for integers, result -** is trivial. Otherwise, compare them as integers. (When 'i' has no -** float representation, either 'f' is "far away" from 'i' or 'f' has -** no precision left for a fractional part; either way, how 'f' is -** truncated is irrelevant.) When 'f' is NaN, comparisons must result -** in false. -*/ -static int LTintfloat (lua_Integer i, lua_Number f) { -#if defined(l_intfitsf) - if (!l_intfitsf(i)) { - if (f >= -cast_num(LUA_MININTEGER)) /* -minint == maxint + 1 */ - return 1; /* f >= maxint + 1 > i */ - else if (f > cast_num(LUA_MININTEGER)) /* minint < f <= maxint ? */ - return (i < cast(lua_Integer, f)); /* compare them as integers */ - else /* f <= minint <= i (or 'f' is NaN) --> not(i < f) */ - return 0; - } -#endif - return luai_numlt(cast_num(i), f); /* compare them as floats */ -} - - -/* -** Check whether integer 'i' is less than or equal to float 'f'. -** See comments on previous function. -*/ -static int LEintfloat (lua_Integer i, lua_Number f) { -#if defined(l_intfitsf) - if (!l_intfitsf(i)) { - if (f >= -cast_num(LUA_MININTEGER)) /* -minint == maxint + 1 */ - return 1; /* f >= maxint + 1 > i */ - else if (f >= cast_num(LUA_MININTEGER)) /* minint <= f <= maxint ? */ - return (i <= cast(lua_Integer, f)); /* compare them as integers */ - else /* f < minint <= i (or 'f' is NaN) --> not(i <= f) */ - return 0; - } -#endif - return luai_numle(cast_num(i), f); /* compare them as floats */ -} - - -/* -** Return 'l < r', for numbers. -*/ -static int LTnum (const TValue *l, const TValue *r) { - if (ttisinteger(l)) { - lua_Integer li = ivalue(l); - if (ttisinteger(r)) - return li < ivalue(r); /* both are integers */ - else /* 'l' is int and 'r' is float */ - return LTintfloat(li, fltvalue(r)); /* l < r ? */ - } - else { - lua_Number lf = fltvalue(l); /* 'l' must be float */ - if (ttisfloat(r)) - return luai_numlt(lf, fltvalue(r)); /* both are float */ - else if (luai_numisnan(lf)) /* 'r' is int and 'l' is float */ - return 0; /* NaN < i is always false */ - else /* without NaN, (l < r) <--> not(r <= l) */ - return !LEintfloat(ivalue(r), lf); /* not (r <= l) ? */ - } -} - - -/* -** Return 'l <= r', for numbers. -*/ -static int LEnum (const TValue *l, const TValue *r) { - if (ttisinteger(l)) { - lua_Integer li = ivalue(l); - if (ttisinteger(r)) - return li <= ivalue(r); /* both are integers */ - else /* 'l' is int and 'r' is float */ - return LEintfloat(li, fltvalue(r)); /* l <= r ? */ - } - else { - lua_Number lf = fltvalue(l); /* 'l' must be float */ - if (ttisfloat(r)) - return luai_numle(lf, fltvalue(r)); /* both are float */ - else if (luai_numisnan(lf)) /* 'r' is int and 'l' is float */ - return 0; /* NaN <= i is always false */ - else /* without NaN, (l <= r) <--> not(r < l) */ - return !LTintfloat(ivalue(r), lf); /* not (r < l) ? */ - } -} - - -/* -** Main operation less than; return 'l < r'. -*/ -int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r) { - int res; - if (ttisnumber(l) && ttisnumber(r)) /* both operands are numbers? */ - return LTnum(l, r); - else if (ttisstring(l) && ttisstring(r)) /* both are strings? */ - return l_strcmp(tsvalue(l), tsvalue(r)) < 0; - else if ((res = luaT_callorderTM(L, l, r, TM_LT)) < 0) /* no metamethod? */ - luaG_ordererror(L, l, r); /* error */ - return res; -} - - -/* -** Main operation less than or equal to; return 'l <= r'. If it needs -** a metamethod and there is no '__le', try '__lt', based on -** l <= r iff !(r < l) (assuming a total order). If the metamethod -** yields during this substitution, the continuation has to know -** about it (to negate the result of r= 0) /* try 'le' */ - return res; - else { /* try 'lt': */ - L->ci->callstatus |= CIST_LEQ; /* mark it is doing 'lt' for 'le' */ - res = luaT_callorderTM(L, r, l, TM_LT); - L->ci->callstatus ^= CIST_LEQ; /* clear mark */ - if (res < 0) - luaG_ordererror(L, l, r); - return !res; /* result is negated */ - } -} - - -/* -** Main operation for equality of Lua values; return 't1 == t2'. -** L == NULL means raw equality (no metamethods) -*/ -int luaV_equalobj (lua_State *L, const TValue *t1, const TValue *t2) { - const TValue *tm; - if (ttype(t1) != ttype(t2)) { /* not the same variant? */ - if (ttnov(t1) != ttnov(t2) || ttnov(t1) != LUA_TNUMBER) - return 0; /* only numbers can be equal with different variants */ - else { /* two numbers with different variants */ - lua_Integer i1, i2; /* compare them as integers */ - return (tointeger(t1, &i1) && tointeger(t2, &i2) && i1 == i2); - } - } - /* values have same type and same variant */ - switch (ttype(t1)) { - case LUA_TNIL: return 1; - case LUA_TNUMINT: return (ivalue(t1) == ivalue(t2)); - case LUA_TNUMFLT: return luai_numeq(fltvalue(t1), fltvalue(t2)); - case LUA_TBOOLEAN: return bvalue(t1) == bvalue(t2); /* true must be 1 !! */ - case LUA_TLIGHTUSERDATA: return pvalue(t1) == pvalue(t2); - case LUA_TLCF: return fvalue(t1) == fvalue(t2); - case LUA_TSHRSTR: return eqshrstr(tsvalue(t1), tsvalue(t2)); - case LUA_TLNGSTR: return luaS_eqlngstr(tsvalue(t1), tsvalue(t2)); - case LUA_TUSERDATA: { - if (uvalue(t1) == uvalue(t2)) return 1; - else if (L == NULL) return 0; - tm = fasttm(L, uvalue(t1)->metatable, TM_EQ); - if (tm == NULL) - tm = fasttm(L, uvalue(t2)->metatable, TM_EQ); - break; /* will try TM */ - } - case LUA_TTABLE: { - if (hvalue(t1) == hvalue(t2)) return 1; - else if (L == NULL) return 0; - tm = fasttm(L, hvalue(t1)->metatable, TM_EQ); - if (tm == NULL) - tm = fasttm(L, hvalue(t2)->metatable, TM_EQ); - break; /* will try TM */ - } - default: - return gcvalue(t1) == gcvalue(t2); - } - if (tm == NULL) /* no TM? */ - return 0; /* objects are different */ - luaT_callTM(L, tm, t1, t2, L->top, 1); /* call TM */ - return !l_isfalse(L->top); -} - - -/* macro used by 'luaV_concat' to ensure that element at 'o' is a string */ -#define tostring(L,o) \ - (ttisstring(o) || (cvt2str(o) && (luaO_tostring(L, o), 1))) - -#define isemptystr(o) (ttisshrstring(o) && tsvalue(o)->shrlen == 0) - -/* copy strings in stack from top - n up to top - 1 to buffer */ -static void copy2buff (StkId top, int n, char *buff) { - size_t tl = 0; /* size already copied */ - do { - size_t l = vslen(top - n); /* length of string being copied */ - memcpy(buff + tl, svalue(top - n), l * sizeof(char)); - tl += l; - } while (--n > 0); -} - - -/* -** Main operation for concatenation: concat 'total' values in the stack, -** from 'L->top - total' up to 'L->top - 1'. -*/ -void luaV_concat (lua_State *L, int total) { - lua_assert(total >= 2); - do { - StkId top = L->top; - int n = 2; /* number of elements handled in this pass (at least 2) */ - if (!(ttisstring(top-2) || cvt2str(top-2)) || !tostring(L, top-1)) - luaT_trybinTM(L, top-2, top-1, top-2, TM_CONCAT); - else if (isemptystr(top - 1)) /* second operand is empty? */ - cast_void(tostring(L, top - 2)); /* result is first operand */ - else if (isemptystr(top - 2)) { /* first operand is an empty string? */ - setobjs2s(L, top - 2, top - 1); /* result is second op. */ - } - else { - /* at least two non-empty string values; get as many as possible */ - size_t tl = vslen(top - 1); - TString *ts; - /* collect total length and number of strings */ - for (n = 1; n < total && tostring(L, top - n - 1); n++) { - size_t l = vslen(top - n - 1); - if (l >= (MAX_SIZE/sizeof(char)) - tl) - luaG_runerror(L, "string length overflow"); - tl += l; - } - if (tl <= LUAI_MAXSHORTLEN) { /* is result a short string? */ - char buff[LUAI_MAXSHORTLEN]; - copy2buff(top, n, buff); /* copy strings to buffer */ - ts = luaS_newlstr(L, buff, tl); - } - else { /* long string; copy strings directly to final result */ - ts = luaS_createlngstrobj(L, tl); - copy2buff(top, n, getstr(ts)); - } - setsvalue2s(L, top - n, ts); /* create result */ - } - total -= n-1; /* got 'n' strings to create 1 new */ - L->top -= n-1; /* popped 'n' strings and pushed one */ - } while (total > 1); /* repeat until only 1 result left */ -} - - -/* -** Main operation 'ra' = #rb'. -*/ -void luaV_objlen (lua_State *L, StkId ra, const TValue *rb) { - const TValue *tm; - switch (ttype(rb)) { - case LUA_TTABLE: { - Table *h = hvalue(rb); - tm = fasttm(L, h->metatable, TM_LEN); - if (tm) break; /* metamethod? break switch to call it */ - setivalue(ra, luaH_getn(h)); /* else primitive len */ - return; - } - case LUA_TSHRSTR: { - setivalue(ra, tsvalue(rb)->shrlen); - return; - } - case LUA_TLNGSTR: { - setivalue(ra, tsvalue(rb)->u.lnglen); - return; - } - default: { /* try metamethod */ - tm = luaT_gettmbyobj(L, rb, TM_LEN); - if (ttisnil(tm)) /* no metamethod? */ - luaG_typeerror(L, rb, "get length of"); - break; - } - } - luaT_callTM(L, tm, rb, rb, ra, 1); -} - - -/* -** Integer division; return 'm // n', that is, floor(m/n). -** C division truncates its result (rounds towards zero). -** 'floor(q) == trunc(q)' when 'q >= 0' or when 'q' is integer, -** otherwise 'floor(q) == trunc(q) - 1'. -*/ -lua_Integer luaV_div (lua_State *L, lua_Integer m, lua_Integer n) { - if (l_castS2U(n) + 1u <= 1u) { /* special cases: -1 or 0 */ - if (n == 0) - luaG_runerror(L, "attempt to divide by zero"); - return intop(-, 0, m); /* n==-1; avoid overflow with 0x80000...//-1 */ - } - else { - lua_Integer q = m / n; /* perform C division */ - if ((m ^ n) < 0 && m % n != 0) /* 'm/n' would be negative non-integer? */ - q -= 1; /* correct result for different rounding */ - return q; - } -} - - -/* -** Integer modulus; return 'm % n'. (Assume that C '%' with -** negative operands follows C99 behavior. See previous comment -** about luaV_div.) -*/ -lua_Integer luaV_mod (lua_State *L, lua_Integer m, lua_Integer n) { - if (l_castS2U(n) + 1u <= 1u) { /* special cases: -1 or 0 */ - if (n == 0) - luaG_runerror(L, "attempt to perform 'n%%0'"); - return 0; /* m % -1 == 0; avoid overflow with 0x80000...%-1 */ - } - else { - lua_Integer r = m % n; - if (r != 0 && (m ^ n) < 0) /* 'm/n' would be non-integer negative? */ - r += n; /* correct result for different rounding */ - return r; - } -} - - -/* number of bits in an integer */ -#define NBITS cast_int(sizeof(lua_Integer) * CHAR_BIT) - -/* -** Shift left operation. (Shift right just negates 'y'.) -*/ -lua_Integer luaV_shiftl (lua_Integer x, lua_Integer y) { - if (y < 0) { /* shift right? */ - if (y <= -NBITS) return 0; - else return intop(>>, x, -y); - } - else { /* shift left */ - if (y >= NBITS) return 0; - else return intop(<<, x, y); - } -} - - -/* -** check whether cached closure in prototype 'p' may be reused, that is, -** whether there is a cached closure with the same upvalues needed by -** new closure to be created. -*/ -static LClosure *getcached (Proto *p, UpVal **encup, StkId base) { - LClosure *c = p->cache; - if (c != NULL) { /* is there a cached closure? */ - int nup = p->sizeupvalues; - Upvaldesc *uv = p->upvalues; - int i; - for (i = 0; i < nup; i++) { /* check whether it has right upvalues */ - TValue *v = uv[i].instack ? base + uv[i].idx : encup[uv[i].idx]->v; - if (c->upvals[i]->v != v) - return NULL; /* wrong upvalue; cannot reuse closure */ - } - } - return c; /* return cached closure (or NULL if no cached closure) */ -} - - -/* -** create a new Lua closure, push it in the stack, and initialize -** its upvalues. Note that the closure is not cached if prototype is -** already black (which means that 'cache' was already cleared by the -** GC). -*/ -static void pushclosure (lua_State *L, Proto *p, UpVal **encup, StkId base, - StkId ra) { - int nup = p->sizeupvalues; - Upvaldesc *uv = p->upvalues; - int i; - LClosure *ncl = luaF_newLclosure(L, nup); - ncl->p = p; - setclLvalue(L, ra, ncl); /* anchor new closure in stack */ - for (i = 0; i < nup; i++) { /* fill in its upvalues */ - if (uv[i].instack) /* upvalue refers to local variable? */ - ncl->upvals[i] = luaF_findupval(L, base + uv[i].idx); - else /* get upvalue from enclosing function */ - ncl->upvals[i] = encup[uv[i].idx]; - ncl->upvals[i]->refcount++; - /* new closure is white, so we do not need a barrier here */ - } - if (!isblack(p)) /* cache will not break GC invariant? */ - p->cache = ncl; /* save it on cache for reuse */ -} - - -/* -** finish execution of an opcode interrupted by an yield -*/ -void luaV_finishOp (lua_State *L) { - CallInfo *ci = L->ci; - StkId base = ci->u.l.base; - Instruction inst = *(ci->u.l.savedpc - 1); /* interrupted instruction */ - OpCode op = GET_OPCODE(inst); - switch (op) { /* finish its execution */ - case OP_ADD: case OP_SUB: case OP_MUL: case OP_DIV: case OP_IDIV: - case OP_BAND: case OP_BOR: case OP_BXOR: case OP_SHL: case OP_SHR: - case OP_MOD: case OP_POW: - case OP_UNM: case OP_BNOT: case OP_LEN: - case OP_GETTABUP: case OP_GETTABLE: case OP_SELF: { - setobjs2s(L, base + GETARG_A(inst), --L->top); - break; - } - case OP_LE: case OP_LT: case OP_EQ: { - int res = !l_isfalse(L->top - 1); - L->top--; - if (ci->callstatus & CIST_LEQ) { /* "<=" using "<" instead? */ - lua_assert(op == OP_LE); - ci->callstatus ^= CIST_LEQ; /* clear mark */ - res = !res; /* negate result */ - } - lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_JMP); - if (res != GETARG_A(inst)) /* condition failed? */ - ci->u.l.savedpc++; /* skip jump instruction */ - break; - } - case OP_CONCAT: { - StkId top = L->top - 1; /* top when 'luaT_trybinTM' was called */ - int b = GETARG_B(inst); /* first element to concatenate */ - int total = cast_int(top - 1 - (base + b)); /* yet to concatenate */ - setobj2s(L, top - 2, top); /* put TM result in proper position */ - if (total > 1) { /* are there elements to concat? */ - L->top = top - 1; /* top is one after last element (at top-2) */ - luaV_concat(L, total); /* concat them (may yield again) */ - } - /* move final result to final position */ - setobj2s(L, ci->u.l.base + GETARG_A(inst), L->top - 1); - L->top = ci->top; /* restore top */ - break; - } - case OP_TFORCALL: { - lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_TFORLOOP); - L->top = ci->top; /* correct top */ - break; - } - case OP_CALL: { - if (GETARG_C(inst) - 1 >= 0) /* nresults >= 0? */ - L->top = ci->top; /* adjust results */ - break; - } - case OP_TAILCALL: case OP_SETTABUP: case OP_SETTABLE: - break; - default: lua_assert(0); - } -} - - - - -/* -** {================================================================== -** Function 'luaV_execute': main interpreter loop -** =================================================================== -*/ - - -/* -** some macros for common tasks in 'luaV_execute' -*/ - - -#define RA(i) (base+GETARG_A(i)) -#define RB(i) check_exp(getBMode(GET_OPCODE(i)) == OpArgR, base+GETARG_B(i)) -#define RC(i) check_exp(getCMode(GET_OPCODE(i)) == OpArgR, base+GETARG_C(i)) -#define RKB(i) check_exp(getBMode(GET_OPCODE(i)) == OpArgK, \ - ISK(GETARG_B(i)) ? k+INDEXK(GETARG_B(i)) : base+GETARG_B(i)) -#define RKC(i) check_exp(getCMode(GET_OPCODE(i)) == OpArgK, \ - ISK(GETARG_C(i)) ? k+INDEXK(GETARG_C(i)) : base+GETARG_C(i)) - - -/* execute a jump instruction */ -#define dojump(ci,i,e) \ - { int a = GETARG_A(i); \ - if (a != 0) luaF_close(L, ci->u.l.base + a - 1); \ - ci->u.l.savedpc += GETARG_sBx(i) + e; } - -/* for test instructions, execute the jump instruction that follows it */ -#define donextjump(ci) { i = *ci->u.l.savedpc; dojump(ci, i, 1); } - - -#define Protect(x) { {x;}; base = ci->u.l.base; } - -#define checkGC(L,c) \ - { luaC_condGC(L, L->top = (c), /* limit of live values */ \ - Protect(L->top = ci->top)); /* restore top */ \ - luai_threadyield(L); } - - -/* fetch an instruction and prepare its execution */ -#define vmfetch() { \ - i = *(ci->u.l.savedpc++); \ - if (L->hookmask & (LUA_MASKLINE | LUA_MASKCOUNT)) \ - Protect(luaG_traceexec(L)); \ - ra = RA(i); /* WARNING: any stack reallocation invalidates 'ra' */ \ - lua_assert(base == ci->u.l.base); \ - lua_assert(base <= L->top && L->top < L->stack + L->stacksize); \ -} - -#define vmdispatch(o) switch(o) -#define vmcase(l) case l: -#define vmbreak break - - -/* -** copy of 'luaV_gettable', but protecting the call to potential -** metamethod (which can reallocate the stack) -*/ -#define gettableProtected(L,t,k,v) { const TValue *slot; \ - if (luaV_fastget(L,t,k,slot,luaH_get)) { setobj2s(L, v, slot); } \ - else Protect(luaV_finishget(L,t,k,v,slot)); } - - -/* same for 'luaV_settable' */ -#define settableProtected(L,t,k,v) { const TValue *slot; \ - if (!luaV_fastset(L,t,k,slot,luaH_get,v)) \ - Protect(luaV_finishset(L,t,k,v,slot)); } - - - -void luaV_execute (lua_State *L) { - CallInfo *ci = L->ci; - LClosure *cl; - TValue *k; - StkId base; - ci->callstatus |= CIST_FRESH; /* fresh invocation of 'luaV_execute" */ - newframe: /* reentry point when frame changes (call/return) */ - lua_assert(ci == L->ci); - cl = clLvalue(ci->func); /* local reference to function's closure */ - k = cl->p->k; /* local reference to function's constant table */ - base = ci->u.l.base; /* local copy of function's base */ - /* main loop of interpreter */ - for (;;) { - Instruction i; - StkId ra; - vmfetch(); - vmdispatch (GET_OPCODE(i)) { - vmcase(OP_MOVE) { - setobjs2s(L, ra, RB(i)); - vmbreak; - } - vmcase(OP_LOADK) { - TValue *rb = k + GETARG_Bx(i); - setobj2s(L, ra, rb); - vmbreak; - } - vmcase(OP_LOADKX) { - TValue *rb; - lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_EXTRAARG); - rb = k + GETARG_Ax(*ci->u.l.savedpc++); - setobj2s(L, ra, rb); - vmbreak; - } - vmcase(OP_LOADBOOL) { - setbvalue(ra, GETARG_B(i)); - if (GETARG_C(i)) ci->u.l.savedpc++; /* skip next instruction (if C) */ - vmbreak; - } - vmcase(OP_LOADNIL) { - int b = GETARG_B(i); - do { - setnilvalue(ra++); - } while (b--); - vmbreak; - } - vmcase(OP_GETUPVAL) { - int b = GETARG_B(i); - setobj2s(L, ra, cl->upvals[b]->v); - vmbreak; - } - vmcase(OP_GETTABUP) { - TValue *upval = cl->upvals[GETARG_B(i)]->v; - TValue *rc = RKC(i); - gettableProtected(L, upval, rc, ra); - vmbreak; - } - vmcase(OP_GETTABLE) { - StkId rb = RB(i); - TValue *rc = RKC(i); - gettableProtected(L, rb, rc, ra); - vmbreak; - } - vmcase(OP_SETTABUP) { - TValue *upval = cl->upvals[GETARG_A(i)]->v; - TValue *rb = RKB(i); - TValue *rc = RKC(i); - settableProtected(L, upval, rb, rc); - vmbreak; - } - vmcase(OP_SETUPVAL) { - UpVal *uv = cl->upvals[GETARG_B(i)]; - setobj(L, uv->v, ra); - luaC_upvalbarrier(L, uv); - vmbreak; - } - vmcase(OP_SETTABLE) { - TValue *rb = RKB(i); - TValue *rc = RKC(i); - settableProtected(L, ra, rb, rc); - vmbreak; - } - vmcase(OP_NEWTABLE) { - int b = GETARG_B(i); - int c = GETARG_C(i); - Table *t = luaH_new(L); - sethvalue(L, ra, t); - if (b != 0 || c != 0) - luaH_resize(L, t, luaO_fb2int(b), luaO_fb2int(c)); - checkGC(L, ra + 1); - vmbreak; - } - vmcase(OP_SELF) { - const TValue *aux; - StkId rb = RB(i); - TValue *rc = RKC(i); - TString *key = tsvalue(rc); /* key must be a string */ - setobjs2s(L, ra + 1, rb); - if (luaV_fastget(L, rb, key, aux, luaH_getstr)) { - setobj2s(L, ra, aux); - } - else Protect(luaV_finishget(L, rb, rc, ra, aux)); - vmbreak; - } - vmcase(OP_ADD) { - TValue *rb = RKB(i); - TValue *rc = RKC(i); - lua_Number nb; lua_Number nc; - if (ttisinteger(rb) && ttisinteger(rc)) { - lua_Integer ib = ivalue(rb); lua_Integer ic = ivalue(rc); - setivalue(ra, intop(+, ib, ic)); - } - else if (tonumber(rb, &nb) && tonumber(rc, &nc)) { - setfltvalue(ra, luai_numadd(L, nb, nc)); - } - else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_ADD)); } - vmbreak; - } - vmcase(OP_SUB) { - TValue *rb = RKB(i); - TValue *rc = RKC(i); - lua_Number nb; lua_Number nc; - if (ttisinteger(rb) && ttisinteger(rc)) { - lua_Integer ib = ivalue(rb); lua_Integer ic = ivalue(rc); - setivalue(ra, intop(-, ib, ic)); - } - else if (tonumber(rb, &nb) && tonumber(rc, &nc)) { - setfltvalue(ra, luai_numsub(L, nb, nc)); - } - else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_SUB)); } - vmbreak; - } - vmcase(OP_MUL) { - TValue *rb = RKB(i); - TValue *rc = RKC(i); - lua_Number nb; lua_Number nc; - if (ttisinteger(rb) && ttisinteger(rc)) { - lua_Integer ib = ivalue(rb); lua_Integer ic = ivalue(rc); - setivalue(ra, intop(*, ib, ic)); - } - else if (tonumber(rb, &nb) && tonumber(rc, &nc)) { - setfltvalue(ra, luai_nummul(L, nb, nc)); - } - else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_MUL)); } - vmbreak; - } - vmcase(OP_DIV) { /* float division (always with floats) */ - TValue *rb = RKB(i); - TValue *rc = RKC(i); - lua_Number nb; lua_Number nc; - if (tonumber(rb, &nb) && tonumber(rc, &nc)) { - setfltvalue(ra, luai_numdiv(L, nb, nc)); - } - else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_DIV)); } - vmbreak; - } - vmcase(OP_BAND) { - TValue *rb = RKB(i); - TValue *rc = RKC(i); - lua_Integer ib; lua_Integer ic; - if (tointeger(rb, &ib) && tointeger(rc, &ic)) { - setivalue(ra, intop(&, ib, ic)); - } - else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_BAND)); } - vmbreak; - } - vmcase(OP_BOR) { - TValue *rb = RKB(i); - TValue *rc = RKC(i); - lua_Integer ib; lua_Integer ic; - if (tointeger(rb, &ib) && tointeger(rc, &ic)) { - setivalue(ra, intop(|, ib, ic)); - } - else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_BOR)); } - vmbreak; - } - vmcase(OP_BXOR) { - TValue *rb = RKB(i); - TValue *rc = RKC(i); - lua_Integer ib; lua_Integer ic; - if (tointeger(rb, &ib) && tointeger(rc, &ic)) { - setivalue(ra, intop(^, ib, ic)); - } - else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_BXOR)); } - vmbreak; - } - vmcase(OP_SHL) { - TValue *rb = RKB(i); - TValue *rc = RKC(i); - lua_Integer ib; lua_Integer ic; - if (tointeger(rb, &ib) && tointeger(rc, &ic)) { - setivalue(ra, luaV_shiftl(ib, ic)); - } - else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_SHL)); } - vmbreak; - } - vmcase(OP_SHR) { - TValue *rb = RKB(i); - TValue *rc = RKC(i); - lua_Integer ib; lua_Integer ic; - if (tointeger(rb, &ib) && tointeger(rc, &ic)) { - setivalue(ra, luaV_shiftl(ib, -ic)); - } - else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_SHR)); } - vmbreak; - } - vmcase(OP_MOD) { - TValue *rb = RKB(i); - TValue *rc = RKC(i); - lua_Number nb; lua_Number nc; - if (ttisinteger(rb) && ttisinteger(rc)) { - lua_Integer ib = ivalue(rb); lua_Integer ic = ivalue(rc); - setivalue(ra, luaV_mod(L, ib, ic)); - } - else if (tonumber(rb, &nb) && tonumber(rc, &nc)) { - lua_Number m; - luai_nummod(L, nb, nc, m); - setfltvalue(ra, m); - } - else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_MOD)); } - vmbreak; - } - vmcase(OP_IDIV) { /* floor division */ - TValue *rb = RKB(i); - TValue *rc = RKC(i); - lua_Number nb; lua_Number nc; - if (ttisinteger(rb) && ttisinteger(rc)) { - lua_Integer ib = ivalue(rb); lua_Integer ic = ivalue(rc); - setivalue(ra, luaV_div(L, ib, ic)); - } - else if (tonumber(rb, &nb) && tonumber(rc, &nc)) { - setfltvalue(ra, luai_numidiv(L, nb, nc)); - } - else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_IDIV)); } - vmbreak; - } - vmcase(OP_POW) { - TValue *rb = RKB(i); - TValue *rc = RKC(i); - lua_Number nb; lua_Number nc; - if (tonumber(rb, &nb) && tonumber(rc, &nc)) { - setfltvalue(ra, luai_numpow(L, nb, nc)); - } - else { Protect(luaT_trybinTM(L, rb, rc, ra, TM_POW)); } - vmbreak; - } - vmcase(OP_UNM) { - TValue *rb = RB(i); - lua_Number nb; - if (ttisinteger(rb)) { - lua_Integer ib = ivalue(rb); - setivalue(ra, intop(-, 0, ib)); - } - else if (tonumber(rb, &nb)) { - setfltvalue(ra, luai_numunm(L, nb)); - } - else { - Protect(luaT_trybinTM(L, rb, rb, ra, TM_UNM)); - } - vmbreak; - } - vmcase(OP_BNOT) { - TValue *rb = RB(i); - lua_Integer ib; - if (tointeger(rb, &ib)) { - setivalue(ra, intop(^, ~l_castS2U(0), ib)); - } - else { - Protect(luaT_trybinTM(L, rb, rb, ra, TM_BNOT)); - } - vmbreak; - } - vmcase(OP_NOT) { - TValue *rb = RB(i); - int res = l_isfalse(rb); /* next assignment may change this value */ - setbvalue(ra, res); - vmbreak; - } - vmcase(OP_LEN) { - Protect(luaV_objlen(L, ra, RB(i))); - vmbreak; - } - vmcase(OP_CONCAT) { - int b = GETARG_B(i); - int c = GETARG_C(i); - StkId rb; - L->top = base + c + 1; /* mark the end of concat operands */ - Protect(luaV_concat(L, c - b + 1)); - ra = RA(i); /* 'luaV_concat' may invoke TMs and move the stack */ - rb = base + b; - setobjs2s(L, ra, rb); - checkGC(L, (ra >= rb ? ra + 1 : rb)); - L->top = ci->top; /* restore top */ - vmbreak; - } - vmcase(OP_JMP) { - dojump(ci, i, 0); - vmbreak; - } - vmcase(OP_EQ) { - TValue *rb = RKB(i); - TValue *rc = RKC(i); - Protect( - if (luaV_equalobj(L, rb, rc) != GETARG_A(i)) - ci->u.l.savedpc++; - else - donextjump(ci); - ) - vmbreak; - } - vmcase(OP_LT) { - Protect( - if (luaV_lessthan(L, RKB(i), RKC(i)) != GETARG_A(i)) - ci->u.l.savedpc++; - else - donextjump(ci); - ) - vmbreak; - } - vmcase(OP_LE) { - Protect( - if (luaV_lessequal(L, RKB(i), RKC(i)) != GETARG_A(i)) - ci->u.l.savedpc++; - else - donextjump(ci); - ) - vmbreak; - } - vmcase(OP_TEST) { - if (GETARG_C(i) ? l_isfalse(ra) : !l_isfalse(ra)) - ci->u.l.savedpc++; - else - donextjump(ci); - vmbreak; - } - vmcase(OP_TESTSET) { - TValue *rb = RB(i); - if (GETARG_C(i) ? l_isfalse(rb) : !l_isfalse(rb)) - ci->u.l.savedpc++; - else { - setobjs2s(L, ra, rb); - donextjump(ci); - } - vmbreak; - } - vmcase(OP_CALL) { - int b = GETARG_B(i); - int nresults = GETARG_C(i) - 1; - if (b != 0) L->top = ra+b; /* else previous instruction set top */ - if (luaD_precall(L, ra, nresults)) { /* C function? */ - if (nresults >= 0) - L->top = ci->top; /* adjust results */ - Protect((void)0); /* update 'base' */ - } - else { /* Lua function */ - ci = L->ci; - goto newframe; /* restart luaV_execute over new Lua function */ - } - vmbreak; - } - vmcase(OP_TAILCALL) { - int b = GETARG_B(i); - if (b != 0) L->top = ra+b; /* else previous instruction set top */ - lua_assert(GETARG_C(i) - 1 == LUA_MULTRET); - if (luaD_precall(L, ra, LUA_MULTRET)) { /* C function? */ - Protect((void)0); /* update 'base' */ - } - else { - /* tail call: put called frame (n) in place of caller one (o) */ - CallInfo *nci = L->ci; /* called frame */ - CallInfo *oci = nci->previous; /* caller frame */ - StkId nfunc = nci->func; /* called function */ - StkId ofunc = oci->func; /* caller function */ - /* last stack slot filled by 'precall' */ - StkId lim = nci->u.l.base + getproto(nfunc)->numparams; - int aux; - /* close all upvalues from previous call */ - if (cl->p->sizep > 0) luaF_close(L, oci->u.l.base); - /* move new frame into old one */ - for (aux = 0; nfunc + aux < lim; aux++) - setobjs2s(L, ofunc + aux, nfunc + aux); - oci->u.l.base = ofunc + (nci->u.l.base - nfunc); /* correct base */ - oci->top = L->top = ofunc + (L->top - nfunc); /* correct top */ - oci->u.l.savedpc = nci->u.l.savedpc; - oci->callstatus |= CIST_TAIL; /* function was tail called */ - ci = L->ci = oci; /* remove new frame */ - lua_assert(L->top == oci->u.l.base + getproto(ofunc)->maxstacksize); - goto newframe; /* restart luaV_execute over new Lua function */ - } - vmbreak; - } - vmcase(OP_RETURN) { - int b = GETARG_B(i); - if (cl->p->sizep > 0) luaF_close(L, base); - b = luaD_poscall(L, ci, ra, (b != 0 ? b - 1 : cast_int(L->top - ra))); - if (ci->callstatus & CIST_FRESH) /* local 'ci' still from callee */ - return; /* external invocation: return */ - else { /* invocation via reentry: continue execution */ - ci = L->ci; - if (b) L->top = ci->top; - lua_assert(isLua(ci)); - lua_assert(GET_OPCODE(*((ci)->u.l.savedpc - 1)) == OP_CALL); - goto newframe; /* restart luaV_execute over new Lua function */ - } - } - vmcase(OP_FORLOOP) { - if (ttisinteger(ra)) { /* integer loop? */ - lua_Integer step = ivalue(ra + 2); - lua_Integer idx = intop(+, ivalue(ra), step); /* increment index */ - lua_Integer limit = ivalue(ra + 1); - if ((0 < step) ? (idx <= limit) : (limit <= idx)) { - ci->u.l.savedpc += GETARG_sBx(i); /* jump back */ - chgivalue(ra, idx); /* update internal index... */ - setivalue(ra + 3, idx); /* ...and external index */ - } - } - else { /* floating loop */ - lua_Number step = fltvalue(ra + 2); - lua_Number idx = luai_numadd(L, fltvalue(ra), step); /* inc. index */ - lua_Number limit = fltvalue(ra + 1); - if (luai_numlt(0, step) ? luai_numle(idx, limit) - : luai_numle(limit, idx)) { - ci->u.l.savedpc += GETARG_sBx(i); /* jump back */ - chgfltvalue(ra, idx); /* update internal index... */ - setfltvalue(ra + 3, idx); /* ...and external index */ - } - } - vmbreak; - } - vmcase(OP_FORPREP) { - TValue *init = ra; - TValue *plimit = ra + 1; - TValue *pstep = ra + 2; - lua_Integer ilimit; - int stopnow; - if (ttisinteger(init) && ttisinteger(pstep) && - forlimit(plimit, &ilimit, ivalue(pstep), &stopnow)) { - /* all values are integer */ - lua_Integer initv = (stopnow ? 0 : ivalue(init)); - setivalue(plimit, ilimit); - setivalue(init, intop(-, initv, ivalue(pstep))); - } - else { /* try making all values floats */ - lua_Number ninit; lua_Number nlimit; lua_Number nstep; - if (!tonumber(plimit, &nlimit)) - luaG_runerror(L, "'for' limit must be a number"); - setfltvalue(plimit, nlimit); - if (!tonumber(pstep, &nstep)) - luaG_runerror(L, "'for' step must be a number"); - setfltvalue(pstep, nstep); - if (!tonumber(init, &ninit)) - luaG_runerror(L, "'for' initial value must be a number"); - setfltvalue(init, luai_numsub(L, ninit, nstep)); - } - ci->u.l.savedpc += GETARG_sBx(i); - vmbreak; - } - vmcase(OP_TFORCALL) { - StkId cb = ra + 3; /* call base */ - setobjs2s(L, cb+2, ra+2); - setobjs2s(L, cb+1, ra+1); - setobjs2s(L, cb, ra); - L->top = cb + 3; /* func. + 2 args (state and index) */ - Protect(luaD_call(L, cb, GETARG_C(i))); - L->top = ci->top; - i = *(ci->u.l.savedpc++); /* go to next instruction */ - ra = RA(i); - lua_assert(GET_OPCODE(i) == OP_TFORLOOP); - goto l_tforloop; - } - vmcase(OP_TFORLOOP) { - l_tforloop: - if (!ttisnil(ra + 1)) { /* continue loop? */ - setobjs2s(L, ra, ra + 1); /* save control variable */ - ci->u.l.savedpc += GETARG_sBx(i); /* jump back */ - } - vmbreak; - } - vmcase(OP_SETLIST) { - int n = GETARG_B(i); - int c = GETARG_C(i); - unsigned int last; - Table *h; - if (n == 0) n = cast_int(L->top - ra) - 1; - if (c == 0) { - lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_EXTRAARG); - c = GETARG_Ax(*ci->u.l.savedpc++); - } - h = hvalue(ra); - last = ((c-1)*LFIELDS_PER_FLUSH) + n; - if (last > h->sizearray) /* needs more space? */ - luaH_resizearray(L, h, last); /* preallocate it at once */ - for (; n > 0; n--) { - TValue *val = ra+n; - luaH_setint(L, h, last--, val); - luaC_barrierback(L, h, val); - } - L->top = ci->top; /* correct top (in case of previous open call) */ - vmbreak; - } - vmcase(OP_CLOSURE) { - Proto *p = cl->p->p[GETARG_Bx(i)]; - LClosure *ncl = getcached(p, cl->upvals, base); /* cached closure */ - if (ncl == NULL) /* no match? */ - pushclosure(L, p, cl->upvals, base, ra); /* create a new one */ - else - setclLvalue(L, ra, ncl); /* push cashed closure */ - checkGC(L, ra + 1); - vmbreak; - } - vmcase(OP_VARARG) { - int b = GETARG_B(i) - 1; /* required results */ - int j; - int n = cast_int(base - ci->func) - cl->p->numparams - 1; - if (n < 0) /* less arguments than parameters? */ - n = 0; /* no vararg arguments */ - if (b < 0) { /* B == 0? */ - b = n; /* get all var. arguments */ - Protect(luaD_checkstack(L, n)); - ra = RA(i); /* previous call may change the stack */ - L->top = ra + n; - } - for (j = 0; j < b && j < n; j++) - setobjs2s(L, ra + j, base - n + j); - for (; j < b; j++) /* complete required results with nil */ - setnilvalue(ra + j); - vmbreak; - } - vmcase(OP_EXTRAARG) { - lua_assert(0); - vmbreak; - } - } - } -} - -/* }================================================================== */ - diff --git a/deps/rcheevos/test/lua/src/lvm.h b/deps/rcheevos/test/lua/src/lvm.h deleted file mode 100644 index 422f871949..0000000000 --- a/deps/rcheevos/test/lua/src/lvm.h +++ /dev/null @@ -1,113 +0,0 @@ -/* -** $Id: lvm.h,v 2.41 2016/12/22 13:08:50 roberto Exp $ -** Lua virtual machine -** See Copyright Notice in lua.h -*/ - -#ifndef lvm_h -#define lvm_h - - -#include "ldo.h" -#include "lobject.h" -#include "ltm.h" - - -#if !defined(LUA_NOCVTN2S) -#define cvt2str(o) ttisnumber(o) -#else -#define cvt2str(o) 0 /* no conversion from numbers to strings */ -#endif - - -#if !defined(LUA_NOCVTS2N) -#define cvt2num(o) ttisstring(o) -#else -#define cvt2num(o) 0 /* no conversion from strings to numbers */ -#endif - - -/* -** You can define LUA_FLOORN2I if you want to convert floats to integers -** by flooring them (instead of raising an error if they are not -** integral values) -*/ -#if !defined(LUA_FLOORN2I) -#define LUA_FLOORN2I 0 -#endif - - -#define tonumber(o,n) \ - (ttisfloat(o) ? (*(n) = fltvalue(o), 1) : luaV_tonumber_(o,n)) - -#define tointeger(o,i) \ - (ttisinteger(o) ? (*(i) = ivalue(o), 1) : luaV_tointeger(o,i,LUA_FLOORN2I)) - -#define intop(op,v1,v2) l_castU2S(l_castS2U(v1) op l_castS2U(v2)) - -#define luaV_rawequalobj(t1,t2) luaV_equalobj(NULL,t1,t2) - - -/* -** fast track for 'gettable': if 't' is a table and 't[k]' is not nil, -** return 1 with 'slot' pointing to 't[k]' (final result). Otherwise, -** return 0 (meaning it will have to check metamethod) with 'slot' -** pointing to a nil 't[k]' (if 't' is a table) or NULL (otherwise). -** 'f' is the raw get function to use. -*/ -#define luaV_fastget(L,t,k,slot,f) \ - (!ttistable(t) \ - ? (slot = NULL, 0) /* not a table; 'slot' is NULL and result is 0 */ \ - : (slot = f(hvalue(t), k), /* else, do raw access */ \ - !ttisnil(slot))) /* result not nil? */ - -/* -** standard implementation for 'gettable' -*/ -#define luaV_gettable(L,t,k,v) { const TValue *slot; \ - if (luaV_fastget(L,t,k,slot,luaH_get)) { setobj2s(L, v, slot); } \ - else luaV_finishget(L,t,k,v,slot); } - - -/* -** Fast track for set table. If 't' is a table and 't[k]' is not nil, -** call GC barrier, do a raw 't[k]=v', and return true; otherwise, -** return false with 'slot' equal to NULL (if 't' is not a table) or -** 'nil'. (This is needed by 'luaV_finishget'.) Note that, if the macro -** returns true, there is no need to 'invalidateTMcache', because the -** call is not creating a new entry. -*/ -#define luaV_fastset(L,t,k,slot,f,v) \ - (!ttistable(t) \ - ? (slot = NULL, 0) \ - : (slot = f(hvalue(t), k), \ - ttisnil(slot) ? 0 \ - : (luaC_barrierback(L, hvalue(t), v), \ - setobj2t(L, cast(TValue *,slot), v), \ - 1))) - - -#define luaV_settable(L,t,k,v) { const TValue *slot; \ - if (!luaV_fastset(L,t,k,slot,luaH_get,v)) \ - luaV_finishset(L,t,k,v,slot); } - - - -LUAI_FUNC int luaV_equalobj (lua_State *L, const TValue *t1, const TValue *t2); -LUAI_FUNC int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r); -LUAI_FUNC int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r); -LUAI_FUNC int luaV_tonumber_ (const TValue *obj, lua_Number *n); -LUAI_FUNC int luaV_tointeger (const TValue *obj, lua_Integer *p, int mode); -LUAI_FUNC void luaV_finishget (lua_State *L, const TValue *t, TValue *key, - StkId val, const TValue *slot); -LUAI_FUNC void luaV_finishset (lua_State *L, const TValue *t, TValue *key, - StkId val, const TValue *slot); -LUAI_FUNC void luaV_finishOp (lua_State *L); -LUAI_FUNC void luaV_execute (lua_State *L); -LUAI_FUNC void luaV_concat (lua_State *L, int total); -LUAI_FUNC lua_Integer luaV_div (lua_State *L, lua_Integer x, lua_Integer y); -LUAI_FUNC lua_Integer luaV_mod (lua_State *L, lua_Integer x, lua_Integer y); -LUAI_FUNC lua_Integer luaV_shiftl (lua_Integer x, lua_Integer y); -LUAI_FUNC void luaV_objlen (lua_State *L, StkId ra, const TValue *rb); - -#endif diff --git a/deps/rcheevos/test/lua/src/lzio.c b/deps/rcheevos/test/lua/src/lzio.c deleted file mode 100644 index c9e1f491f3..0000000000 --- a/deps/rcheevos/test/lua/src/lzio.c +++ /dev/null @@ -1,68 +0,0 @@ -/* -** $Id: lzio.c,v 1.37 2015/09/08 15:41:05 roberto Exp $ -** Buffered streams -** See Copyright Notice in lua.h -*/ - -#define lzio_c -#define LUA_CORE - -#include "lprefix.h" - - -#include - -#include "lua.h" - -#include "llimits.h" -#include "lmem.h" -#include "lstate.h" -#include "lzio.h" - - -int luaZ_fill (ZIO *z) { - size_t size; - lua_State *L = z->L; - const char *buff; - lua_unlock(L); - buff = z->reader(L, z->data, &size); - lua_lock(L); - if (buff == NULL || size == 0) - return EOZ; - z->n = size - 1; /* discount char being returned */ - z->p = buff; - return cast_uchar(*(z->p++)); -} - - -void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader, void *data) { - z->L = L; - z->reader = reader; - z->data = data; - z->n = 0; - z->p = NULL; -} - - -/* --------------------------------------------------------------- read --- */ -size_t luaZ_read (ZIO *z, void *b, size_t n) { - while (n) { - size_t m; - if (z->n == 0) { /* no bytes in buffer? */ - if (luaZ_fill(z) == EOZ) /* try to read more */ - return n; /* no more input; return number of missing bytes */ - else { - z->n++; /* luaZ_fill consumed first byte; put it back */ - z->p--; - } - } - m = (n <= z->n) ? n : z->n; /* min. between n and z->n */ - memcpy(b, z->p, m); - z->n -= m; - z->p += m; - b = (char *)b + m; - n -= m; - } - return 0; -} - diff --git a/deps/rcheevos/test/lua/src/lzio.h b/deps/rcheevos/test/lua/src/lzio.h deleted file mode 100644 index e7b6f34b1e..0000000000 --- a/deps/rcheevos/test/lua/src/lzio.h +++ /dev/null @@ -1,66 +0,0 @@ -/* -** $Id: lzio.h,v 1.31 2015/09/08 15:41:05 roberto Exp $ -** Buffered streams -** See Copyright Notice in lua.h -*/ - - -#ifndef lzio_h -#define lzio_h - -#include "lua.h" - -#include "lmem.h" - - -#define EOZ (-1) /* end of stream */ - -typedef struct Zio ZIO; - -#define zgetc(z) (((z)->n--)>0 ? cast_uchar(*(z)->p++) : luaZ_fill(z)) - - -typedef struct Mbuffer { - char *buffer; - size_t n; - size_t buffsize; -} Mbuffer; - -#define luaZ_initbuffer(L, buff) ((buff)->buffer = NULL, (buff)->buffsize = 0) - -#define luaZ_buffer(buff) ((buff)->buffer) -#define luaZ_sizebuffer(buff) ((buff)->buffsize) -#define luaZ_bufflen(buff) ((buff)->n) - -#define luaZ_buffremove(buff,i) ((buff)->n -= (i)) -#define luaZ_resetbuffer(buff) ((buff)->n = 0) - - -#define luaZ_resizebuffer(L, buff, size) \ - ((buff)->buffer = luaM_reallocvchar(L, (buff)->buffer, \ - (buff)->buffsize, size), \ - (buff)->buffsize = size) - -#define luaZ_freebuffer(L, buff) luaZ_resizebuffer(L, buff, 0) - - -LUAI_FUNC void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader, - void *data); -LUAI_FUNC size_t luaZ_read (ZIO* z, void *b, size_t n); /* read next n bytes */ - - - -/* --------- Private Part ------------------ */ - -struct Zio { - size_t n; /* bytes still unread */ - const char *p; /* current position in buffer */ - lua_Reader reader; /* reader function */ - void *data; /* additional data */ - lua_State *L; /* Lua state (for reader) */ -}; - - -LUAI_FUNC int luaZ_fill (ZIO *z); - -#endif diff --git a/deps/rcheevos/test/rcheevos-test.sln b/deps/rcheevos/test/rcheevos-test.sln deleted file mode 100644 index b7e80f6e76..0000000000 --- a/deps/rcheevos/test/rcheevos-test.sln +++ /dev/null @@ -1,31 +0,0 @@ - -Microsoft Visual Studio Solution File, Format Version 12.00 -# Visual Studio 15 -VisualStudioVersion = 15.0.28010.2036 -MinimumVisualStudioVersion = 10.0.40219.1 -Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "rcheevos-test", "rcheevos-test.vcxproj", "{74FBBFC4-5AC5-4A86-B292-B2F535E9912C}" -EndProject -Global - GlobalSection(SolutionConfigurationPlatforms) = preSolution - Debug|x64 = Debug|x64 - Debug|x86 = Debug|x86 - Release|x64 = Release|x64 - Release|x86 = Release|x86 - EndGlobalSection - GlobalSection(ProjectConfigurationPlatforms) = postSolution - {74FBBFC4-5AC5-4A86-B292-B2F535E9912C}.Debug|x64.ActiveCfg = Debug|x64 - {74FBBFC4-5AC5-4A86-B292-B2F535E9912C}.Debug|x64.Build.0 = Debug|x64 - {74FBBFC4-5AC5-4A86-B292-B2F535E9912C}.Debug|x86.ActiveCfg = Debug|Win32 - {74FBBFC4-5AC5-4A86-B292-B2F535E9912C}.Debug|x86.Build.0 = Debug|Win32 - {74FBBFC4-5AC5-4A86-B292-B2F535E9912C}.Release|x64.ActiveCfg = Release|x64 - {74FBBFC4-5AC5-4A86-B292-B2F535E9912C}.Release|x64.Build.0 = Release|x64 - {74FBBFC4-5AC5-4A86-B292-B2F535E9912C}.Release|x86.ActiveCfg = Release|Win32 - {74FBBFC4-5AC5-4A86-B292-B2F535E9912C}.Release|x86.Build.0 = Release|Win32 - EndGlobalSection - GlobalSection(SolutionProperties) = preSolution - HideSolutionNode = FALSE - EndGlobalSection - GlobalSection(ExtensibilityGlobals) = postSolution - SolutionGuid = {02ADF144-5109-40C0-AA02-5BC5585A9883} - EndGlobalSection -EndGlobal diff --git a/deps/rcheevos/test/rcheevos-test.vcxproj b/deps/rcheevos/test/rcheevos-test.vcxproj deleted file mode 100644 index 1c2d7a4c2d..0000000000 --- a/deps/rcheevos/test/rcheevos-test.vcxproj +++ /dev/null @@ -1,176 +0,0 @@ - - - - - Debug - Win32 - - - Release - Win32 - - - Debug - x64 - - - Release - x64 - - - - 15.0 - {74FBBFC4-5AC5-4A86-B292-B2F535E9912C} - rcheevostest - 10.0.17134.0 - - - - Application - true - v141 - MultiByte - - - Application - false - v141 - true - MultiByte - - - Application - true - v141 - MultiByte - - - Application - false - v141 - true - MultiByte - - - - - - - - - - - - - - - - - - - - - - - Level3 - Disabled - true - true - $(ProjectDir)..\include;$(ProjectDir)..\src\rcheevos;$(ProjectDir)lua\src - - - Console - - - - - Level3 - Disabled - true - true - - - - - Level3 - MaxSpeed - true - true - true - true - $(ProjectDir)..\include;$(ProjectDir)..\src\rcheevos;$(ProjectDir)lua\src - - - true - true - Console - - - - - Level3 - MaxSpeed - true - true - true - true - - - true - true - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - \ No newline at end of file diff --git a/deps/rcheevos/test/rcheevos-test.vcxproj.filters b/deps/rcheevos/test/rcheevos-test.vcxproj.filters deleted file mode 100644 index 078377a776..0000000000 --- a/deps/rcheevos/test/rcheevos-test.vcxproj.filters +++ /dev/null @@ -1,151 +0,0 @@ - - - - - {43b6b53b-c37e-453e-97bf-df56c515f1a7} - - - {9d6d4e6d-a0b7-4181-b536-93e34de1e625} - - - - - rcheevos - - - rcheevos - - - rcheevos - - - rcheevos - - - rcheevos - - - rcheevos - - - rcheevos - - - rcheevos - - - rcheevos - - - rcheevos - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - lua - - - - rcheevos - - - - - rcheevos - - - \ No newline at end of file diff --git a/deps/rcheevos/test/smw_snes.json b/deps/rcheevos/test/smw_snes.json deleted file mode 100644 index 767b526df8..0000000000 --- a/deps/rcheevos/test/smw_snes.json +++ /dev/null @@ -1,606 +0,0 @@ -{ - "Success": true, - "PatchData": { - "ID": 228, - "Title": "Super Mario World", - "ConsoleID": 3, - "ForumTopicID": 135, - "Flags": 0, - "ImageIcon": "\/Images\/006972.png", - "ImageTitle": "\/Images\/000021.png", - "ImageIngame": "\/Images\/000022.png", - "ImageBoxArt": "\/Images\/000138.png", - "Publisher": "Nintendo", - "Developer": "Nintendo EAD", - "Genre": "Platforming", - "Released": "JP 1990 , NA 1991 Europe 1992", - "IsFinal": false, - "ConsoleName": "SNES", - "RichPresencePatch": "Lookup:LevelName\r\n0x0=Title Screen\r\n0x14=Yellow Switch Palace\r\n0x28=Yoshi's House\r\n0x29=Yoshi's Island 1\r\n0x2a=Yoshi's Island 2\r\n0x27=Yoshi's Island 3\r\n0x26=Yoshi's Island 4\r\n0x25=#1 Iggy's Castle\r\n0x15=Donut Plains 1\r\n0x9=Donut Plains 2\r\n0x8=Green Switch Palace\r\n0x4=Donut Ghost House\r\n0x3=Top Secret Area\r\n0x5=Donut Plains 3\r\n0x6=Donut Plains 4\r\n0x7=#2 Morton's Castle\r\n0xa=Donut Secret 1\r\n0x13=Donut Secret House\r\n0x2f=Donut Secret 2\r\n0x3e=Vanilla Dome 1\r\n0x3c=Vanilla Dome 2\r\n0x3f=Red Switch Palace\r\n0x2b=Vanilla Ghost House\r\n0x2e=Vanilla Dome 3\r\n0x3d=Vanilla Dome 4\r\n0x40=#3 Lemmy's Castle\r\n0x2d=Vanilla Secret 1\r\n0x1=Vanilla Secret 2\r\n0x2=Vanilla Secret 3\r\n0xb=Vanilla Fortress\r\n0xc=Butter Bridge 1\r\n0xd=Butter Bridge 2\r\n0xe=#4 Ludwig's Castle\r\n0xf=Cheese Bridge Area\r\n0x10=Cookie Mountain\r\n0x11=Soda Lake\r\n0x41=Forest Ghost House\r\n0x42=Forest of Illusion 1\r\n0x43=Forest of Illusion 4\r\n0x44=Forest of Illusion 2\r\n0x45=Blue Switch Palace\r\n0x46=Forest Secret Area\r\n0x47=Forest of Illusion 3\r\n0x1f=Forest Fortress\r\n0x20=#5 Roy's Castle\r\n0x21=Choco-Ghost House\r\n0x22=Chocolate Island 1\r\n0x23=Chocolate Island 3\r\n0x24=Chocolate Island 2\r\n0x1b=Chocolate Fortress\r\n0x1d=Chocolate Island 4\r\n0x1c=Chocolate Island 5\r\n0x1a=#6 Wendy's Castle\r\n0x18=Sunken Ghost Ship\r\n0x3b=Chocolate Secret\r\n0x3a=Valley of Bowser 1\r\n0x39=Valley of Bowser 2\r\n0x38=Valley Ghost House\r\n0x37=Valley of Bowser 3\r\n0x33=Valley of Bowser 4\r\n0x34=#7 Larry's Castle\r\n0x35=Valley Fortress\r\n0x31=Front Door\r\n0x32=Back Door\r\n0x58=Star World 1\r\n0x54=Star World 2\r\n0x56=Star World 3\r\n0x59=Star World 4\r\n0x5a=Star World 5\r\n0x4e=Gnarly\r\n0x4f=Tubular\r\n0x50=Way Cool\r\n0x51=Awesome\r\n0x4c=Groovy\r\n0x4b=Mondo\r\n0x4a=Outrageous\r\n0x49=Funky\r\n\r\nFormat:Lives\r\nFormatType=VALUE\r\n\r\nDisplay:\r\n@LevelName(0xh0013bf), @Lives(0xh0dbe_v+1) lives", - "Achievements": [{ - "ID": 4874, - "MemAddr": "0xH000019=2", - "Title": "I Believe I Can Fly", - "Description": "Collect a feather", - "Points": 2, - "Author": "UNHchabo", - "Modified": 1452548368, - "Created": 1391908064, - "BadgeName": "05506", - "Flags": 3 - }, { - "ID": 4933, - "MemAddr": "0xH0018c2=1", - "Title": "Floating Through The Clouds", - "Description": "Hijack a Lakitu's cloud", - "Points": 2, - "Author": "UNHchabo", - "Modified": 1445779700, - "Created": 1392010935, - "BadgeName": "30357", - "Flags": 3 - }, { - "ID": 341, - "MemAddr": "0x001420=5", - "Title": "Unleash The Dragon", - "Description": "Collect 5 Dragon Coins in a level", - "Points": 3, - "Author": "Scott", - "Modified": 1445783661, - "Created": 1367266583, - "BadgeName": "00549", - "Flags": 3 - }, { - "ID": 342, - "MemAddr": "0xH000dc1=1_0xH0013bf>0", - "Title": "Giddy Up!", - "Description": "Catch a ride with a friend", - "Points": 2, - "Author": "Scott", - "Modified": 1445754183, - "Created": 1367266931, - "BadgeName": "00550", - "Flags": 3 - }, { - "ID": 340, - "MemAddr": "0xH000dbf=99", - "Title": "Rich Mario", - "Description": "Collect 99 coins", - "Points": 5, - "Author": "Scott", - "Modified": 1445757056, - "Created": 1367254976, - "BadgeName": "00547", - "Flags": 3 - }, { - "ID": 1706, - "MemAddr": "0xH001900=80", - "Title": "Maximum Finish", - "Description": "Cross the finish line at the end of the stage and collect the max 50 stars", - "Points": 10, - "Author": "jackolantern", - "Modified": 1372762549, - "Created": 1372674230, - "BadgeName": "02014", - "Flags": 3 - }, { - "ID": 2246, - "MemAddr": "0xH000f31=0.20._R:0xH000f31!=0_0xH000f32=0.20._R:0xH000f32!=0_0xH000f33=0.20._R:0xH000f33!=0_0xH000dbe>d0xH000dbe.8._0xH001411=1.20._R:0xH001411=0", - "Title": "Perfect Bonus Stage", - "Description": "Score 8 extra lives in the 'Bonus Game'", - "Points": 10, - "Author": "Jaarl", - "Modified": 1445783578, - "Created": 1376582613, - "BadgeName": "02739", - "Flags": 3 - }, { - "ID": 2199, - "MemAddr": "0xH001f28=1_0xH001f27=1_0xH001f29=1_0xH001f2a=1", - "Title": "Filling All The Blocks In", - "Description": "Hit the buttons in all four coloured switch palaces", - "Points": 10, - "Author": "jackolantern", - "Modified": 1445756980, - "Created": 1376514114, - "BadgeName": "02720", - "Flags": 3 - }, { - "ID": 2253, - "MemAddr": "0xH0013bf=37_0xH000dd5=1", - "Title": "Iggy Koopa", - "Description": "Defeat Iggy Koopa of Castle #1", - "Points": 5, - "Author": "Jaarl", - "Modified": 1445751693, - "Created": 1376616356, - "BadgeName": "00562", - "Flags": 3 - }, { - "ID": 347, - "MemAddr": "0xH0013bf=7_0xH000dd5=1", - "Title": "Morton Koopa Jr.", - "Description": "Defeat Morton Koopa Jr. of Castle #2", - "Points": 5, - "Author": "Scott", - "Modified": 1445783647, - "Created": 1367322700, - "BadgeName": "00562", - "Flags": 3 - }, { - "ID": 2261, - "MemAddr": "0xH0013bf=64_0xH000dd5=1", - "Title": "Lemmy Koopa", - "Description": "Defeat Lemmy Koopa of Castle #3", - "Points": 10, - "Author": "Jaarl", - "Modified": 1425959153, - "Created": 1376652522, - "BadgeName": "00562", - "Flags": 3 - }, { - "ID": 2262, - "MemAddr": "0xH0013bf=14_0xH000dd5=1", - "Title": "Ludwig von Koopa", - "Description": "Defeat Ludwig von Koopa of Castle #4", - "Points": 10, - "Author": "Jaarl", - "Modified": 1425959133, - "Created": 1376653163, - "BadgeName": "00562", - "Flags": 3 - }, { - "ID": 2306, - "MemAddr": "0xH0013bf=32_0xH000dd5=1", - "Title": "Roy Koopa", - "Description": "Defeat Roy Koopa of Castle #5", - "Points": 10, - "Author": "Jaarl", - "Modified": 1425956637, - "Created": 1376938808, - "BadgeName": "00562", - "Flags": 3 - }, { - "ID": 2309, - "MemAddr": "0xH0013bf=26_0xH000906=1.400._R:0xH0013bf!=26", - "Title": "Wendy O. Koopa", - "Description": "Defeat Wendy O. Koopa of Castle #6", - "Points": 10, - "Author": "Jaarl", - "Modified": 1390938088, - "Created": 1376939582, - "BadgeName": "00562", - "Flags": 3 - }, { - "ID": 2342, - "MemAddr": "0xH0013bf=52_0xH000dd5=1", - "Title": "Larry Koopa", - "Description": "Defeat Larry Koopa of Castle #7", - "Points": 10, - "Author": "Jaarl", - "Modified": 1425959095, - "Created": 1376970283, - "BadgeName": "00562", - "Flags": 3 - }, { - "ID": 2250, - "MemAddr": "0xH0013bf=11(20)_0xH000906=1(20)_R:0xH001411!=1", - "Title": "Reznor", - "Description": "Defeat the Reznor atop Vanilla Dome", - "Points": 10, - "Author": "Jaarl", - "Modified": 1376615087, - "Created": 1376615073, - "BadgeName": "02742", - "Flags": 3 - }, { - "ID": 2307, - "MemAddr": "0xH0013bf=31(20)_0xH000906=1(20)_R:0xH001411!=1", - "Title": "Reznor Again?", - "Description": "Defeat the Reznor in the clearing of the Forest of Illusion", - "Points": 10, - "Author": "Jaarl", - "Modified": 1376938847, - "Created": 1376938811, - "BadgeName": "02742", - "Flags": 3 - }, { - "ID": 2308, - "MemAddr": "0xH0013bf=27.20._0xH000906=1.20._R:0xH001411!=1", - "Title": "Reznor, Do You Ever Give Up?", - "Description": "Defeat the Reznor at the center of Chocolate Island", - "Points": 10, - "Author": "Jaarl", - "Modified": 1445751771, - "Created": 1376938815, - "BadgeName": "02742", - "Flags": 3 - }, { - "ID": 2338, - "MemAddr": "0xH0013bf=53.20._0xH000906=1.20._R:0xH001411!=1", - "Title": "Reznor...", - "Description": "Defeat the Reznor in the Valley of Bowser", - "Points": 10, - "Author": "Jaarl", - "Modified": 1445783707, - "Created": 1376969412, - "BadgeName": "02742", - "Flags": 3 - }, { - "ID": 2275, - "MemAddr": "0xH0013bf=49_R:0xH0013bf!=49_0xH0013f9=3_R:0xH0013f9!=3_0xH0013ef=1_R:0xH0013ef!=1", - "Title": "King Bowser Koopa", - "Description": "Beat Bowser and save the princess (Front Door!)", - "Points": 10, - "Author": "Jaarl", - "Modified": 1445783312, - "Created": 1376742802, - "BadgeName": "02764", - "Flags": 3 - }, { - "ID": 2276, - "MemAddr": "0xH0013bf=49_R:0xH0013bf!=49_0xH0013f9=3_R:0xH0013f9!=3_0xH0013ef=1_R:0xH0013ef!=1_0xH000019=0_R:0xH000019!=0", - "Title": "Baby's First Kiss", - "Description": "Get the princess kiss as Little Mario (Front Door!)", - "Points": 5, - "Author": "Jaarl", - "Modified": 1445783313, - "Created": 1376742805, - "BadgeName": "02765", - "Flags": 3 - }, { - "ID": 2277, - "MemAddr": "0xH0013bf=49_R:0xH0013bf!=49_0xH0013f9=3_R:0xH0013f9!=3_0xH0013ef=1_R:0xH0013ef!=1_0xH000019=3_R:0xH000019!=3", - "Title": "Burning Bowser", - "Description": "Get the princess kiss as Fire Mario (Front Door!)", - "Points": 5, - "Author": "Jaarl", - "Modified": 1445783314, - "Created": 1376742808, - "BadgeName": "02766", - "Flags": 3 - }, { - "ID": 2278, - "MemAddr": "0xH0013bf=49_R:0xH0013bf!=49_0xH0013f9=3_R:0xH0013f9!=3_0xH0013ef=1_R:0xH0013ef!=1_0xH000019=2_R:0xH000019!=2", - "Title": "Flying Finish", - "Description": "Get the princess kiss as Cape Mario (Front Door!)", - "Points": 5, - "Author": "Jaarl", - "Modified": 1445783315, - "Created": 1376742811, - "BadgeName": "02767", - "Flags": 3 - }, { - "ID": 2299, - "MemAddr": "0xH000020=168_R:0xH000020!=168_0xH00001e=248_R:0xH00001e!=248_0xH0013c3=0_R:0xH0013c3!=0_0xH0013bf=19_R:0xH0013bf!=19_0xH001411=0", - "Title": "The Big Boo", - "Description": "Defeat the Big Boo in Donut Secret House", - "Points": 5, - "Author": "Jaarl", - "Modified": 1445751707, - "Created": 1376918022, - "BadgeName": "02797", - "Flags": 3 - }, { - "ID": 2298, - "MemAddr": "0xH0013c3=6", - "Title": "To the Stars!", - "Description": "Reach the Star Road", - "Points": 5, - "Author": "Jaarl", - "Modified": 1445751709, - "Created": 1376918019, - "BadgeName": "02798", - "Flags": 3 - }, { - "ID": 2264, - "MemAddr": "0xH0013c3=3_R:0xH0013c3!=3_0xH001411=0_0xH000007>112_0xH000007<128_0xH000008>112_0xH000008<128", - "Title": "I Could've Sworn...", - "Description": "Get lost in the Forest of Illusion", - "Points": 3, - "Author": "Jaarl", - "Modified": 1445751711, - "Created": 1376657732, - "BadgeName": "02753", - "Flags": 3 - }, { - "ID": 2305, - "MemAddr": "0xH00001e=169_0xH000020=28_0xH0013c3=0_0xH001411=0", - "Title": "Chocolate Donut", - "Description": "Walk in a circle on Chocolate Island", - "Points": 3, - "Author": "Jaarl", - "Modified": 1445754204, - "Created": 1376938805, - "BadgeName": "02806", - "Flags": 3 - }, { - "ID": 2300, - "MemAddr": "0xH0013c3=5", - "Title": "Mario's Special Place", - "Description": "Get to the challenging Special Zone", - "Points": 10, - "Author": "Jaarl", - "Modified": 1445783441, - "Created": 1376918026, - "BadgeName": "02800", - "Flags": 3 - }, { - "ID": 2302, - "MemAddr": "0xH0013c3=5(1)_0xH0013c3=1(1)_R:0xH0013c3=6_R:0xH0013c3=0_R:0xH001f79=0", - "Title": "Change of Scenery", - "Description": "Clear the Special Zone and change the seasons in Mushroom Kingdom", - "Points": 10, - "Author": "Jaarl", - "Modified": 1376929315, - "Created": 1376929303, - "BadgeName": "02803", - "Flags": 3 - }, { - "ID": 2252, - "MemAddr": "0xH0013f3=1.20._0xH001411=1.20._R:0xH001411=0_0xH000019=0.20._R:0xH000019!=0.20.", - "Title": "Too Much Pasta", - "Description": "Let Little Mario load up on mama Luigi's Famous P(asta)-gas!", - "Points": 5, - "Author": "Jaarl", - "Modified": 1445751717, - "Created": 1376615082, - "BadgeName": "02744", - "Flags": 3 - }, { - "ID": 2251, - "MemAddr": "0xH0013f3=1.20._0xH001411=1.20._R:0xH001411=0_0xH000019!=0_R:0xH000019=0", - "Title": "Another Kind of Flying", - "Description": "Send Mario flying with P-gas", - "Points": 5, - "Author": "Jaarl", - "Modified": 1445751754, - "Created": 1376615078, - "BadgeName": "02743", - "Flags": 3 - }, { - "ID": 2263, - "MemAddr": "0xH001697=12_0xH0013bf=66_R:0xH001697=0", - "Title": "Bother The Wigglers", - "Description": "Jump on yellow Wigglers in Forest of Illusion 12 times in a row for a surprise!", - "Points": 10, - "Author": "Jaarl", - "Modified": 1445751796, - "Created": 1376655155, - "BadgeName": "02752", - "Flags": 3 - }, { - "ID": 2274, - "MemAddr": "0xH0013bf=49_R:0xH0013bf!=49_0xH0013f9=3_R:0xH0013f9!=3_0xH001f2e=11_R:0xH001f2e!=11_0xH0013ef=1_R:0xH0013ef!=1", - "Title": "Shortest Route", - "Description": "Clear the fewest stages possible and beat the game", - "Points": 10, - "Author": "Jaarl", - "Modified": 1376742834, - "Created": 1376742799, - "BadgeName": "02768", - "Flags": 3 - }, { - "ID": 2297, - "MemAddr": "0xH001f2e=0.1._0xH001f2e=1.1._0xH001f2e=2.1._0xH001f2e=3.1._0xH001f2e=4.1._0xH001f2e=5.1._0xH001f2e=6.1._0xH001f2e=7.1._0xH001f2e=8.1._0xH001f2e=9.1._0xH001f2e=10.1._0xH001f2e=11.1._0xH0013f9=3_R:0xH000dbe -#include -#include - -#include "lua.h" -#include "lauxlib.h" - -typedef struct { - unsigned char* ram; - unsigned size; -} -memory_t; - -static unsigned peekb(unsigned address, memory_t* memory) { - return address < memory->size ? memory->ram[address] : 0; -} - -static unsigned peek(unsigned address, unsigned num_bytes, void* ud) { - memory_t* memory = (memory_t*)ud; - - switch (num_bytes) { - case 1: return peekb(address, memory); - - case 2: return peekb(address, memory) | - peekb(address + 1, memory) << 8; - - case 4: return peekb(address, memory) | - peekb(address + 1, memory) << 8 | - peekb(address + 2, memory) << 16 | - peekb(address + 3, memory) << 24; - } - - return 0; -} - -static void parse_operand(rc_operand_t* self, const char** memaddr) { - int ret = rc_parse_operand(self, memaddr, 1, NULL, 0); - assert(ret >= 0); - assert(**memaddr == 0); - self->previous = 0; - self->prior = 0; -} - -static void comp_operand(rc_operand_t* self, char expected_type, char expected_size, unsigned expected_value) { - assert(expected_type == self->type); - assert(expected_size == self->size); - assert(expected_value == self->value); -} - -static void parse_comp_operand(const char* memaddr, char expected_type, char expected_size, unsigned expected_value) { - rc_operand_t self; - int ret; - - ret = rc_parse_operand(&self, &memaddr, 1, NULL, 0); - assert(ret >= 0); - assert(*memaddr == 0); - - comp_operand(&self, expected_type, expected_size, expected_value); -} - -static void parse_error_operand(const char* memaddr, int valid_chars) { - rc_operand_t self; - int ret; - const char* begin = memaddr; - - ret = rc_parse_operand(&self, &memaddr, 1, NULL, 0); - assert(ret < 0); - assert(memaddr - begin == valid_chars); -} - -static void parse_comp_operand_value(const char* memaddr, memory_t* memory, unsigned expected_value) { - rc_operand_t self; - unsigned value; - - rc_parse_operand(&self, &memaddr, 1, NULL, 0); - value = rc_evaluate_operand(&self, peek, memory, NULL); - - assert(value == expected_value); -} - -static void test_operand(void) { - { - /*------------------------------------------------------------------------ - TestParseVariableAddress - ------------------------------------------------------------------------*/ - - /* sizes */ - parse_comp_operand("0xH1234", RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U); - parse_comp_operand("0x 1234", RC_OPERAND_ADDRESS, RC_OPERAND_16_BITS, 0x1234U); - parse_comp_operand("0x1234", RC_OPERAND_ADDRESS, RC_OPERAND_16_BITS, 0x1234U); - parse_comp_operand("0xW1234", RC_OPERAND_ADDRESS, RC_OPERAND_24_BITS, 0x1234U); - parse_comp_operand("0xX1234", RC_OPERAND_ADDRESS, RC_OPERAND_32_BITS, 0x1234U); - parse_comp_operand("0xL1234", RC_OPERAND_ADDRESS, RC_OPERAND_LOW, 0x1234U); - parse_comp_operand("0xU1234", RC_OPERAND_ADDRESS, RC_OPERAND_HIGH, 0x1234U); - parse_comp_operand("0xM1234", RC_OPERAND_ADDRESS, RC_OPERAND_BIT_0, 0x1234U); - parse_comp_operand("0xN1234", RC_OPERAND_ADDRESS, RC_OPERAND_BIT_1, 0x1234U); - parse_comp_operand("0xO1234", RC_OPERAND_ADDRESS, RC_OPERAND_BIT_2, 0x1234U); - parse_comp_operand("0xP1234", RC_OPERAND_ADDRESS, RC_OPERAND_BIT_3, 0x1234U); - parse_comp_operand("0xQ1234", RC_OPERAND_ADDRESS, RC_OPERAND_BIT_4, 0x1234U); - parse_comp_operand("0xR1234", RC_OPERAND_ADDRESS, RC_OPERAND_BIT_5, 0x1234U); - parse_comp_operand("0xS1234", RC_OPERAND_ADDRESS, RC_OPERAND_BIT_6, 0x1234U); - parse_comp_operand("0xT1234", RC_OPERAND_ADDRESS, RC_OPERAND_BIT_7, 0x1234U); - - /* sizes (ignore case) */ - parse_comp_operand("0Xh1234", RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U); - parse_comp_operand("0xx1234", RC_OPERAND_ADDRESS, RC_OPERAND_32_BITS, 0x1234U); - parse_comp_operand("0xl1234", RC_OPERAND_ADDRESS, RC_OPERAND_LOW, 0x1234U); - parse_comp_operand("0xu1234", RC_OPERAND_ADDRESS, RC_OPERAND_HIGH, 0x1234U); - parse_comp_operand("0xm1234", RC_OPERAND_ADDRESS, RC_OPERAND_BIT_0, 0x1234U); - parse_comp_operand("0xn1234", RC_OPERAND_ADDRESS, RC_OPERAND_BIT_1, 0x1234U); - parse_comp_operand("0xo1234", RC_OPERAND_ADDRESS, RC_OPERAND_BIT_2, 0x1234U); - parse_comp_operand("0xp1234", RC_OPERAND_ADDRESS, RC_OPERAND_BIT_3, 0x1234U); - parse_comp_operand("0xq1234", RC_OPERAND_ADDRESS, RC_OPERAND_BIT_4, 0x1234U); - parse_comp_operand("0xr1234", RC_OPERAND_ADDRESS, RC_OPERAND_BIT_5, 0x1234U); - parse_comp_operand("0xs1234", RC_OPERAND_ADDRESS, RC_OPERAND_BIT_6, 0x1234U); - parse_comp_operand("0xt1234", RC_OPERAND_ADDRESS, RC_OPERAND_BIT_7, 0x1234U); - - /* addresses */ - parse_comp_operand("0xH0000", RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x0000U); - parse_comp_operand("0xH12345678", RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x12345678U); - parse_comp_operand("0xHABCD", RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0xABCDU); - parse_comp_operand("0xhabcd", RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0xABCDU); - } - - { - /*------------------------------------------------------------------------ - TestParseVariableDeltaMem - ------------------------------------------------------------------------*/ - - /* sizes */ - parse_comp_operand("d0xH1234", RC_OPERAND_DELTA, RC_OPERAND_8_BITS, 0x1234U); - parse_comp_operand("d0x 1234", RC_OPERAND_DELTA, RC_OPERAND_16_BITS, 0x1234U); - parse_comp_operand("d0x1234", RC_OPERAND_DELTA, RC_OPERAND_16_BITS, 0x1234U); - parse_comp_operand("d0xW1234", RC_OPERAND_DELTA, RC_OPERAND_24_BITS, 0x1234U); - parse_comp_operand("d0xX1234", RC_OPERAND_DELTA, RC_OPERAND_32_BITS, 0x1234U); - parse_comp_operand("d0xL1234", RC_OPERAND_DELTA, RC_OPERAND_LOW, 0x1234U); - parse_comp_operand("d0xU1234", RC_OPERAND_DELTA, RC_OPERAND_HIGH, 0x1234U); - parse_comp_operand("d0xM1234", RC_OPERAND_DELTA, RC_OPERAND_BIT_0, 0x1234U); - parse_comp_operand("d0xN1234", RC_OPERAND_DELTA, RC_OPERAND_BIT_1, 0x1234U); - parse_comp_operand("d0xO1234", RC_OPERAND_DELTA, RC_OPERAND_BIT_2, 0x1234U); - parse_comp_operand("d0xP1234", RC_OPERAND_DELTA, RC_OPERAND_BIT_3, 0x1234U); - parse_comp_operand("d0xQ1234", RC_OPERAND_DELTA, RC_OPERAND_BIT_4, 0x1234U); - parse_comp_operand("d0xR1234", RC_OPERAND_DELTA, RC_OPERAND_BIT_5, 0x1234U); - parse_comp_operand("d0xS1234", RC_OPERAND_DELTA, RC_OPERAND_BIT_6, 0x1234U); - parse_comp_operand("d0xT1234", RC_OPERAND_DELTA, RC_OPERAND_BIT_7, 0x1234U); - - /* ignores case */ - parse_comp_operand("D0Xh1234", RC_OPERAND_DELTA, RC_OPERAND_8_BITS, 0x1234U); - - /* addresses */ - parse_comp_operand("d0xH0000", RC_OPERAND_DELTA, RC_OPERAND_8_BITS, 0x0000U); - parse_comp_operand("d0xH12345678", RC_OPERAND_DELTA, RC_OPERAND_8_BITS, 0x12345678U); - parse_comp_operand("d0xHABCD", RC_OPERAND_DELTA, RC_OPERAND_8_BITS, 0xABCDU); - parse_comp_operand("d0xhabcd", RC_OPERAND_DELTA, RC_OPERAND_8_BITS, 0xABCDU); - } - - { - /*------------------------------------------------------------------------ - TestParseVariablePriorMem - ------------------------------------------------------------------------*/ - - /* sizes */ - parse_comp_operand("p0xH1234", RC_OPERAND_PRIOR, RC_OPERAND_8_BITS, 0x1234U); - parse_comp_operand("p0x 1234", RC_OPERAND_PRIOR, RC_OPERAND_16_BITS, 0x1234U); - parse_comp_operand("p0x1234", RC_OPERAND_PRIOR, RC_OPERAND_16_BITS, 0x1234U); - parse_comp_operand("p0xW1234", RC_OPERAND_PRIOR, RC_OPERAND_24_BITS, 0x1234U); - parse_comp_operand("p0xX1234", RC_OPERAND_PRIOR, RC_OPERAND_32_BITS, 0x1234U); - parse_comp_operand("p0xL1234", RC_OPERAND_PRIOR, RC_OPERAND_LOW, 0x1234U); - parse_comp_operand("p0xU1234", RC_OPERAND_PRIOR, RC_OPERAND_HIGH, 0x1234U); - parse_comp_operand("p0xM1234", RC_OPERAND_PRIOR, RC_OPERAND_BIT_0, 0x1234U); - parse_comp_operand("p0xN1234", RC_OPERAND_PRIOR, RC_OPERAND_BIT_1, 0x1234U); - parse_comp_operand("p0xO1234", RC_OPERAND_PRIOR, RC_OPERAND_BIT_2, 0x1234U); - parse_comp_operand("p0xP1234", RC_OPERAND_PRIOR, RC_OPERAND_BIT_3, 0x1234U); - parse_comp_operand("p0xQ1234", RC_OPERAND_PRIOR, RC_OPERAND_BIT_4, 0x1234U); - parse_comp_operand("p0xR1234", RC_OPERAND_PRIOR, RC_OPERAND_BIT_5, 0x1234U); - parse_comp_operand("p0xS1234", RC_OPERAND_PRIOR, RC_OPERAND_BIT_6, 0x1234U); - parse_comp_operand("p0xT1234", RC_OPERAND_PRIOR, RC_OPERAND_BIT_7, 0x1234U); - - /* ignores case */ - parse_comp_operand("P0Xh1234", RC_OPERAND_PRIOR, RC_OPERAND_8_BITS, 0x1234U); - - /* addresses */ - parse_comp_operand("p0xH0000", RC_OPERAND_PRIOR, RC_OPERAND_8_BITS, 0x0000U); - parse_comp_operand("p0xH12345678", RC_OPERAND_PRIOR, RC_OPERAND_8_BITS, 0x12345678U); - parse_comp_operand("p0xHABCD", RC_OPERAND_PRIOR, RC_OPERAND_8_BITS, 0xABCDU); - parse_comp_operand("p0xhabcd", RC_OPERAND_PRIOR, RC_OPERAND_8_BITS, 0xABCDU); - } - - { - /*------------------------------------------------------------------------ - TestParseVariableValue - ------------------------------------------------------------------------*/ - - /* decimal - values don't actually have size, default is RC_OPERAND_8_BITS */ - parse_comp_operand("123", RC_OPERAND_CONST, RC_OPERAND_8_BITS, 123U); - parse_comp_operand("123456", RC_OPERAND_CONST, RC_OPERAND_8_BITS, 123456U); - parse_comp_operand("0", RC_OPERAND_CONST, RC_OPERAND_8_BITS, 0U); - parse_comp_operand("0000000000", RC_OPERAND_CONST, RC_OPERAND_8_BITS, 0U); - parse_comp_operand("4294967295", RC_OPERAND_CONST, RC_OPERAND_8_BITS, 4294967295U); - - /* hex - 'H' prefix, not '0x'! */ - parse_comp_operand("H123", RC_OPERAND_CONST, RC_OPERAND_8_BITS, 0x123U); - parse_comp_operand("HABCD", RC_OPERAND_CONST, RC_OPERAND_8_BITS, 0xABCDU); - parse_comp_operand("h123", RC_OPERAND_CONST, RC_OPERAND_8_BITS, 0x123U); - parse_comp_operand("habcd", RC_OPERAND_CONST, RC_OPERAND_8_BITS, 0xABCDU); - parse_comp_operand("HFFFFFFFF", RC_OPERAND_CONST, RC_OPERAND_8_BITS, 4294967295U); - - /* '0x' is an address */ - parse_comp_operand("0x123", RC_OPERAND_ADDRESS, RC_OPERAND_16_BITS, 0x123U); - - /* hex without prefix */ - parse_error_operand("ABCD", 0); - - /* more than 32-bits (error), will be constrained to 32-bits */ - parse_comp_operand("4294967296", RC_OPERAND_CONST, RC_OPERAND_8_BITS, 4294967295U); - - /* negative value (error), will be "wrapped around": -1 = 0x100000000 - 1 = 0xFFFFFFFF = 4294967295 */ - parse_comp_operand("-1", RC_OPERAND_CONST, RC_OPERAND_8_BITS, 4294967295U); - } - - { - /*------------------------------------------------------------------------ - TestVariableGetValue - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - memory.ram = ram; - memory.size = sizeof(ram); - - /* value */ - parse_comp_operand_value("0", &memory, 0x00U); - - /* eight-bit */ - parse_comp_operand_value("0xh0", &memory, 0x00U); - parse_comp_operand_value("0xh1", &memory, 0x12U); - parse_comp_operand_value("0xh4", &memory, 0x56U); - parse_comp_operand_value("0xh5", &memory, 0x00U); /* out of range */ - - /* sixteen-bit */ - parse_comp_operand_value("0x 0", &memory, 0x1200U); - parse_comp_operand_value("0x 3", &memory, 0x56ABU); - parse_comp_operand_value("0x 4", &memory, 0x0056U); /* out of range */ - - /* thirty-two-bit */ - parse_comp_operand_value("0xx0", &memory, 0xAB341200U); - parse_comp_operand_value("0xx1", &memory, 0x56AB3412U); - parse_comp_operand_value("0xx3", &memory, 0x000056ABU); /* out of range */ - - /* nibbles */ - parse_comp_operand_value("0xu0", &memory, 0x0U); - parse_comp_operand_value("0xu1", &memory, 0x1U); - parse_comp_operand_value("0xu4", &memory, 0x5U); - parse_comp_operand_value("0xu5", &memory, 0x0U); /* out of range */ - - parse_comp_operand_value("0xl0", &memory, 0x0U); - parse_comp_operand_value("0xl1", &memory, 0x2U); - parse_comp_operand_value("0xl4", &memory, 0x6U); - parse_comp_operand_value("0xl5", &memory, 0x0U); /* out of range */ - - /* bits */ - parse_comp_operand_value("0xm0", &memory, 0x0U); - parse_comp_operand_value("0xm3", &memory, 0x1U); - parse_comp_operand_value("0xn3", &memory, 0x1U); - parse_comp_operand_value("0xo3", &memory, 0x0U); - parse_comp_operand_value("0xp3", &memory, 0x1U); - parse_comp_operand_value("0xq3", &memory, 0x0U); - parse_comp_operand_value("0xr3", &memory, 0x1U); - parse_comp_operand_value("0xs3", &memory, 0x0U); - parse_comp_operand_value("0xt3", &memory, 0x1U); - parse_comp_operand_value("0xm5", &memory, 0x0U); /* out of range */ - } - - { - /*------------------------------------------------------------------------ - TestVariableGetValueDelta - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_operand_t op; - const char* memaddr; - - memory.ram = ram; - memory.size = sizeof(ram); - - memaddr = "d0xh1"; - parse_operand(&op, &memaddr); - - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x00); /* first call gets uninitialized value */ - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x12); /* second gets current value */ - - /* RC_OPERAND_DELTA is always one frame behind */ - ram[1] = 0x13; - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x12U); - - ram[1] = 0x14; - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x13U); - - ram[1] = 0x15; - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x14U); - - ram[1] = 0x16; - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x15U); - - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x16U); - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x16U); - } - - { - /*------------------------------------------------------------------------ - TestVariableGetValueDelta - ------------------------------------------------------------------------*/ - - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_operand_t op; - const char* memaddr; - - memory.ram = ram; - memory.size = sizeof(ram); - - memaddr = "p0xh1"; - parse_operand(&op, &memaddr); - - /* RC_OPERAND_PRIOR only updates when the memory value changes */ - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x00); /* first call gets uninitialized value */ - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x00); /* value only changes when memory changes */ - - ram[1] = 0x13; - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x12U); - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x12U); - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x12U); - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x12U); - - ram[1] = 0x14; - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x13U); - - ram[1] = 0x15; - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x14U); - - ram[1] = 0x16; - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x15U); - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x15U); - assert(rc_evaluate_operand(&op, peek, &memory, NULL) == 0x15U); - } -} - -static void parse_condition(rc_condition_t* self, const char* memaddr) { - int ret; - rc_scratch_t scratch; - - ret = 0; - rc_parse_condition(&ret, self, &scratch, &memaddr, NULL, 0); - assert(ret >= 0); - assert(*memaddr == 0); -} - -static void parse_comp_condition( - const char* memaddr, char expected_type, - char expected_left_type, char expected_left_size, unsigned expected_left_value, - char expected_operator, - char expected_right_type, char expected_right_size, unsigned expected_right_value, - int expected_required_hits -) { - rc_condition_t self; - parse_condition(&self, memaddr); - - assert(self.type == expected_type); - comp_operand(&self.operand1, expected_left_type, expected_left_size, expected_left_value); - assert(self.oper == expected_operator); - comp_operand(&self.operand2, expected_right_type, expected_right_size, expected_right_value); - assert(self.required_hits == expected_required_hits); -} - -static void parse_test_condition(const char* memaddr, memory_t* memory, int value) { - rc_condition_t self; - int ret; - rc_scratch_t scratch; - - ret = 0; - rc_parse_condition(&ret, &self, &scratch, &memaddr, NULL, 0); - assert(ret >= 0); - assert(*memaddr == 0); - - ret = rc_test_condition(&self, 0, peek, memory, NULL); - - assert((ret && value) || (!ret && !value)); -} - -static void test_condition(void) { - { - /*------------------------------------------------------------------------ - TestParseConditionMemoryComparisonValue - ------------------------------------------------------------------------*/ - - /* different comparisons */ - parse_comp_condition( - "0xH1234=8", - RC_CONDITION_STANDARD, - RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_EQ, - RC_OPERAND_CONST, RC_OPERAND_8_BITS, 8U, - 0 - ); - - parse_comp_condition( - "0xH1234==8", - RC_CONDITION_STANDARD, - RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_EQ, - RC_OPERAND_CONST, RC_OPERAND_8_BITS, 8U, - 0 - ); - - parse_comp_condition( - "0xH1234!=8", - RC_CONDITION_STANDARD, - RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_NE, - RC_OPERAND_CONST, RC_OPERAND_8_BITS, 8U, - 0 - ); - - parse_comp_condition( - "0xH1234<8", - RC_CONDITION_STANDARD, - RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_LT, - RC_OPERAND_CONST, RC_OPERAND_8_BITS, 8U, - 0 - ); - - parse_comp_condition( - "0xH1234<=8", - RC_CONDITION_STANDARD, - RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_LE, - RC_OPERAND_CONST, RC_OPERAND_8_BITS, 8U, - 0 - ); - - parse_comp_condition( - "0xH1234>8", - RC_CONDITION_STANDARD, - RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_GT, - RC_OPERAND_CONST, RC_OPERAND_8_BITS, 8U, - 0 - ); - - parse_comp_condition( - "0xH1234>=8", - RC_CONDITION_STANDARD, - RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_GE, - RC_OPERAND_CONST, RC_OPERAND_8_BITS, 8U, - 0 - ); - - /* delta */ - parse_comp_condition( - "d0xH1234=8", - RC_CONDITION_STANDARD, - RC_OPERAND_DELTA, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_EQ, - RC_OPERAND_CONST, RC_OPERAND_8_BITS, 8U, - 0 - ); - - /* flags */ - parse_comp_condition( - "R:0xH1234=8", - RC_CONDITION_RESET_IF, - RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_EQ, - RC_OPERAND_CONST, RC_OPERAND_8_BITS, 8U, - 0 - ); - - parse_comp_condition( - "P:0xH1234=8", - RC_CONDITION_PAUSE_IF, - RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_EQ, - RC_OPERAND_CONST, RC_OPERAND_8_BITS, 8U, - 0 - ); - - parse_comp_condition( - "A:0xH1234=8", - RC_CONDITION_ADD_SOURCE, - RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_EQ, - RC_OPERAND_CONST, RC_OPERAND_8_BITS, 8U, - 0 - ); - - parse_comp_condition( - "B:0xH1234=8", - RC_CONDITION_SUB_SOURCE, - RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_EQ, - RC_OPERAND_CONST, RC_OPERAND_8_BITS, 8U, - 0 - ); - - parse_comp_condition( - "C:0xH1234=8", - RC_CONDITION_ADD_HITS, - RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_EQ, - RC_OPERAND_CONST, RC_OPERAND_8_BITS, 8U, - 0 - ); - - /* hit count */ - parse_comp_condition( - "0xH1234=8(1)", - RC_CONDITION_STANDARD, - RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_EQ, - RC_OPERAND_CONST, RC_OPERAND_8_BITS, 8U, - 1 - ); - - parse_comp_condition( - "0xH1234=8.1.", /* legacy format */ - RC_CONDITION_STANDARD, - RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_EQ, - RC_OPERAND_CONST, RC_OPERAND_8_BITS, 8U, - 1 - ); - - parse_comp_condition( - "0xH1234=8(100)", - RC_CONDITION_STANDARD, - RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_EQ, - RC_OPERAND_CONST, RC_OPERAND_8_BITS, 8U, - 100 - ); - } - - { - /*------------------------------------------------------------------------ - TestParseConditionMemoryComparisonHexValue - ------------------------------------------------------------------------*/ - - /* hex value is interpreted as a 16-bit memory reference */ - parse_comp_condition( - "0xH1234=0x80", - RC_CONDITION_STANDARD, - RC_OPERAND_ADDRESS, RC_OPERAND_8_BITS, 0x1234U, - RC_CONDITION_EQ, - RC_OPERAND_ADDRESS, RC_OPERAND_16_BITS, 0x80U, - 0 - ); - } - - { - /*------------------------------------------------------------------------ - TestParseConditionMemoryComparisonMemory - ------------------------------------------------------------------------*/ - - parse_comp_condition( - "0xL1234!=0xU3456", - RC_CONDITION_STANDARD, - RC_OPERAND_ADDRESS, RC_OPERAND_LOW, 0x1234U, - RC_CONDITION_NE, - RC_OPERAND_ADDRESS, RC_OPERAND_HIGH, 0x3456U, - 0 - ); - } - - { - /*------------------------------------------------------------------------ - TestConditionCompare - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - - memory.ram = ram; - memory.size = sizeof(ram); - - /* values */ - parse_test_condition("0xH0001=18", &memory, 1); - parse_test_condition("0xH0001!=18", &memory, 0); - parse_test_condition("0xH0001<=18", &memory, 1); - parse_test_condition("0xH0001>=18", &memory, 1); - parse_test_condition("0xH0001<18", &memory, 0); - parse_test_condition("0xH0001>18", &memory, 0); - parse_test_condition("0xH0001>0", &memory, 1); - parse_test_condition("0xH0001!=0", &memory, 1); - - /* memory */ - parse_test_condition("0xH0001<0xH0002", &memory, 1); - parse_test_condition("0xH0001>0xH0002", &memory, 0); - parse_test_condition("0xH0001=0xH0001", &memory, 1); - parse_test_condition("0xH0001!=0xH0002", &memory, 1); - } - - { - /*------------------------------------------------------------------------ - TestConditionCompareDelta - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_condition_t cond; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_condition(&cond, "0xH0001>d0xH0001"); - - /* initial delta value is 0, 0x12 > 0 */ - assert(rc_test_condition(&cond, 0, peek, &memory, NULL) == 1); - - /* delta value is now 0x12, 0x12 = 0x12 */ - assert(rc_test_condition(&cond, 0, peek, &memory, NULL) == 0); - - /* delta value is now 0x12, 0x11 < 0x12 */ - ram[1] = 0x11; - assert(rc_test_condition(&cond, 0, peek, &memory, NULL) == 0); - - /* delta value is now 0x13, 0x12 > 0x11 */ - ram[1] = 0x12; - assert(rc_test_condition(&cond, 0, peek, &memory, NULL) == 1); - } -} - -static void parse_trigger(rc_trigger_t** self, void* buffer, const char* memaddr) { - int ret = rc_trigger_size(memaddr); - assert(ret >= 0); - memset(buffer, 0xEE, ret + 128); - - *self = rc_parse_trigger(buffer, memaddr, NULL, 0); - assert(*self != NULL); - assert(*((int*)((char*)buffer + ret)) == 0xEEEEEEEE); -} - -static void comp_trigger(rc_trigger_t* self, memory_t* memory, int expected_result) { - int ret = rc_test_trigger(self, peek, memory, NULL); - assert(expected_result == ret); -} - -static rc_condition_t* condset_get_cond(rc_condset_t* condset, int ndx) { - rc_condition_t* cond = condset->conditions; - - while (ndx-- != 0) { - assert(cond != NULL); - cond = cond->next; - } - - assert(cond != NULL); - return cond; -} - -static rc_condset_t* trigger_get_set(rc_trigger_t* trigger, int ndx) { - rc_condset_t* condset = trigger->alternative; - - if (ndx-- == 0) { - assert(trigger->requirement != NULL); - return trigger->requirement; - } - - while (ndx-- != 0) { - condset = condset->next; - assert(condset != NULL); - } - - assert(condset != NULL); - return condset; -} - -static void test_trigger(void) { - char buffer[2048]; - - { - /*------------------------------------------------------------------------ - TestSimpleSets - Only standard conditions, no alt groups - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "0xH0001=18"); /* one condition, true */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - - parse_trigger(&trigger, buffer, "0xH0001!=18"); /* one condition, false */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - - parse_trigger(&trigger, buffer, "0xH0001=18_0xH0002=52"); /* two conditions, true */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - parse_trigger(&trigger, buffer, "0xH0001=18_0xH0002>52"); /* two conditions, false */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - - parse_trigger(&trigger, buffer, "0xH0001=18_0xH0002=52_0xL0004=6"); /* three conditions, true */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 1U); - - parse_trigger(&trigger, buffer, "0xH0001=16_0xH0002=52_0xL0004=6"); /* three conditions, first false */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 1U); - - parse_trigger(&trigger, buffer, "0xH0001=18_0xH0002=50_0xL0004=6"); /* three conditions, first false */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 1U); - - parse_trigger(&trigger, buffer, "0xH0001=18_0xH0002=52_0xL0004=4"); /* three conditions, first false */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - - parse_trigger(&trigger, buffer, "0xH0001=16_0xH0002=50_0xL0004=4"); /* three conditions, all false */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - } - - { - /*------------------------------------------------------------------------ - TestPauseIf - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "0xH0001=18_P:0xH0002=52_P:0xL0x0004=6"); - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); /* Also true, but processing stops on first PauseIf */ - - ram[2] = 0; - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); /* PauseIf goes to 0 when false */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 1U); /* PauseIf stays at 1 when false */ - - ram[4] = 0; - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); /* PauseIf goes to 0 when false */ - } - - { - /*------------------------------------------------------------------------ - TestPauseIfHitCountOne - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "0xH0001=18_P:0xH0002=52.1."); - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - ram[2] = 0; - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); /* PauseIf with HitCount doesn't automatically go back to 0 */ - } - - { - /*------------------------------------------------------------------------ - TestPauseIfHitCountTwo - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "0xH0001=18_P:0xH0002=52.2."); - comp_trigger(trigger, &memory, 1); /* PauseIf counter hasn't reached HitCount target, non-PauseIf condition still true */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - comp_trigger(trigger, &memory, 0); /* PauseIf counter has reached HitCount target, non-PauseIf conditions ignored */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); - - ram[2] = 0; - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); /* PauseIf with HitCount doesn't automatically go back to 0 */ - } - - { - /*------------------------------------------------------------------------ - TestPauseIfHitReset - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "0xH0001=18_P:0xH0002=52.1._R:0xH0003=1SR:0xH0003=2"); - comp_trigger(trigger, &memory, 0); /* Trigger PauseIf, non-PauseIf conditions ignored */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 0U); - - ram[2] = 0; - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); /* PauseIf with HitCount doesn't automatically go back to 0 */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 0U); - - ram[3] = 1; - comp_trigger(trigger, &memory, 0); /* ResetIf in Paused group is ignored */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 0U); - - ram[3] = 2; - comp_trigger(trigger, &memory, 0); /* ResetIf in alternate group is honored, PauseIf does not retrigger and non-PauseIf condition is true */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); /* ResetIf causes entire achievement to fail */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 0U); - - ram[3] = 3; - comp_trigger(trigger, &memory, 1); /* ResetIf no longer true, achievement allowed to trigger */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 0U); - } - - { - /*------------------------------------------------------------------------ - TestResetIf - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "0xH0001=18_R:0xH0002=50_R:0xL0x0004=4"); - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - - ram[2] = 50; - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); /* True, but ResetIf also resets true marker */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - - ram[4] = 0x54; - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); /* True, but ResetIf also resets true marker */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); /* Also true, but processing stop on first ResetIf */ - - ram[2] = 52; - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); /* True, but ResetIf also resets true marker */ - - ram[4] = 0x56; - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - } - - { - /*------------------------------------------------------------------------ - TestHitCount - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "0xH0001=20(2)_0xH0002=52"); - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - ram[1] = 20; - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); - - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 3U); - - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); /* hits stop increment once count it reached */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 4U); - } - - { - /*------------------------------------------------------------------------ - TestHitCountResetIf - Verifies that ResetIf resets HitCounts - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "0xH0001=18(2)_0xH0002=52_R:0xL0004=4"); - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); - - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 3U); - - ram[4] = 0x54; - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - - ram[4] = 0x56; - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); - } - - { - /*------------------------------------------------------------------------ - TestHitCountResetIfHitCount - Verifies that ResetIf with HitCount target only resets HitCounts when target is met - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "0xH0001=18(2)_0xH0002=52_R:0xL0004=4.2."); - comp_trigger(trigger, &memory, 0); /* HitCounts on conditions 1 and 2 are incremented */ - comp_trigger(trigger, &memory, 1); /* HitCounts on conditions 1 and 2 are incremented, cond 1 is now true so entire achievement is true */ - comp_trigger(trigger, &memory, 1); /* HitCount on condition 2 is incremented, cond 1 already met its target HitCount */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 3U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); /* ResetIf HitCount should still be 0 */ - - ram[4] = 0x54; - - /* first hit on ResetIf should not reset anything */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); /* condition 1 stopped at it's HitCount target */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 4U); /* condition 2 continues to increment */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 1U); /* ResetIf HitCount should be 1 */ - - /* second hit on ResetIf should reset everything */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); /* ResetIf HitCount should also be reset */ - } - - { - /*------------------------------------------------------------------------ - TestAddHitsResetIf - Verifies that ResetIf works with AddHits - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "C:0xH0001=18_R:0xL0004=6(3)"); /* never(repeated(3, byte(1) == 18 || low(4) == 6)) */ - comp_trigger(trigger, &memory, 1); /* result is true, no non-reset conditions */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - comp_trigger(trigger, &memory, 0); /* total hits met (2 for each condition, only needed 3 total) (2 hits on condition 2 is not enough), result is always false if reset */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - } - - { - /*------------------------------------------------------------------------ - TestHitCountResetIfHitCountOne - Verifies that ResetIf HitCount(1) behaves like ResetIf without a HitCount - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "0xH0001=18(2)_0xH0002=52_R:0xL0004=4.1."); - comp_trigger(trigger, &memory, 0); /* HitCounts on conditions 1 and 2 are incremented */ - comp_trigger(trigger, &memory, 1); /* HitCounts on conditions 1 and 2 are incremented, cond 1 is now true so entire achievement is true */ - comp_trigger(trigger, &memory, 1); /* HitCount on condition 2 is incremented, cond 1 already met its target HitCount */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 3U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); /* ResetIf HitCount should still be 0 */ - - ram[4] = 0x54; - - /* ResetIf HitCount(1) should behave just like ResetIf without a HitCount - all items, including ResetIf should be reset. */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); /* ResetIf HitCount should also be reset */ - } - - { - /*------------------------------------------------------------------------ - TestHitCountPauseIf - Verifies that PauseIf stops HitCount processing - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "0xH0001=18(2)_0xH0002=52_P:0xL0004=4"); - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - ram[4] = 0x54; - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - ram[4] = 0x56; - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); - - ram[4] = 0x54; - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); - - ram[4] = 0x56; - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 3U); - } - - { - /*------------------------------------------------------------------------ - TestHitCountPauseIfResetIf - Verifies that PauseIf prevents ResetIf processing - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "0xH0001=18(2)_R:0xH0002=50_P:0xL0004=4"); - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - - ram[4] = 0x54; /* pause */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - - ram[2] = 50; /* reset (but still paused) */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - - ram[4] = 0x56; /* unpause (still reset) */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - - ram[2] = 52; /* unreset */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - } - - { - /*------------------------------------------------------------------------ - TestAddSource - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "A:0xH0001=0_0xH0002=22"); - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - - ram[2] = 4; /* sum is correct */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); /* AddSource condition does not have hit tracking */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - ram[1] = 0; /* first condition is true, but not sum */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); /* AddSource condition does not have hit tracking */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - ram[2] = 22; /* first condition is true, sum is correct */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); /* AddSource condition does not have hit tracking */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); - } - - { - /*------------------------------------------------------------------------ - TestSubSource - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "B:0xH0002=0_0xH0001=14"); /* NOTE: SubSource subtracts the first value from the second! */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - - ram[2] = 4; /* difference is correct */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); /* SubSource condition does not have hit tracking */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - ram[1] = 0; /* first condition is true, but not difference */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); /* SubSource condition does not have hit tracking */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - ram[2] = 14; /* first condition is true, value is negative inverse of expected value */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); /* SubSource condition does not have hit tracking */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - ram[1] = 28; /* difference is correct again */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); /* SubSource condition does not have hit tracking */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); - } - - { - /*------------------------------------------------------------------------ - TestAddSubSource - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "A:0xH0001=0_B:0xL0002=0_0xL0004=14"); /* byte(1) - low(2) + low(4) == 14 */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - - ram[1] = 12; /* total is correct */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); /* AddSource condition does not have hit tracking */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); /* SubSource condition does not have hit tracking */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 1U); - - ram[1] = 0; /* first condition is true, but not total */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); /* AddSource condition does not have hit tracking */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); /* SubSource condition does not have hit tracking */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 1U); - - ram[4] = 18; /* byte(4) would make total true, but not low(4) */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); /* AddSource condition does not have hit tracking */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); /* SubSource condition does not have hit tracking */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 1U); - - ram[2] = 1; - ram[4] = 15; /* difference is correct again */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); /* AddSource condition does not have hit tracking */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); /* SubSource condition does not have hit tracking */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 2U); - } - - { - /*------------------------------------------------------------------------ - TestAddHits - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - - rc_condset_t* condset; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "C:0xH0001=18(2)_0xL0004=6(4)"); /* repeated(4, byte(1) == 18 || low(4) == 6) */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - comp_trigger(trigger, &memory, 1); /* total hits met (2 for each condition) */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); - - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); /* threshold met, stop incrementing */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); /* total met prevents incrementing even though individual tally has not reached total */ - - rc_reset_condset(trigger->requirement); - - for (condset = trigger->alternative; condset != NULL; condset = condset->next) { - rc_reset_condset(condset); - } - - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - ram[1] = 16; - comp_trigger(trigger, &memory, 0); /* 1 + 2 < 4, not met */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); - - comp_trigger(trigger, &memory, 1); /* 1 + 3 = 4, met */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 3U); - } - - { - /*------------------------------------------------------------------------ - TestAndNext - ------------------------------------------------------------------------*/ - - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - /* once(byte(0x0001) == 20 && byte(0x0002) == 20 && byte(0x0003) == 20) */ - parse_trigger(&trigger, buffer, "N:0xH0001=20_N:0xH0002=20_0xH0003=20.3."); - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - - ram[3] = 20; /* final condition is not enough to reset */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - - ram[2] = 20; /* two conditions is not enough to reset */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - - ram[1] = 20; /* all three conditions true, only count hit on final */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 1U); - - ram[2] = 30; /* middle condition not true */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 1U); - - ram[2] = 20; /* all three conditions true */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 2U); - - ram[3] = 30; /* third condition not true */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 2U); - - ram[3] = 20; /* all three conditions true, HitCount reached */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 3U); - - comp_trigger(trigger, &memory, 1); /* HitCount reached */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 3U); - } - - { - /*------------------------------------------------------------------------ - TestAndNextBoundaries - ------------------------------------------------------------------------*/ - - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_trigger_t* trigger; - char buffer[2048]; - - memory.ram = ram; - memory.size = sizeof(ram); - - /* byte(0x0000) == 0 && once(byte(0x0001) == 20 && byte(0x0002) == 20 && byte(0x0003) == 20) && byte(0x0000) == 0 */ - parse_trigger(&trigger, buffer, "0xH0000=0_N:0xH0001=20_N:0xH0002=20_0xH0003=20.1._0xH0000=0"); - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 4)->current_hits == 1U); - - ram[3] = 20; /* final condition is not enough to reset */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 4)->current_hits == 2U); - - ram[2] = 20; /* two conditions is not enough to reset */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 3U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 4)->current_hits == 3U); - - ram[1] = 20; /* all three conditions true, whole trigger is true */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 4U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 4)->current_hits == 4U); - } - - { - /*------------------------------------------------------------------------ - TestAndNextReset - ------------------------------------------------------------------------*/ - - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - /* byte(0x0000) == 0 && never(byte(0x0001) == 20 && byte(0x0002) == 20 && byte(0x0003) == 20) */ - parse_trigger(&trigger, buffer, "0xH0000=0_N:0xH0001=20_N:0xH0002=20_R:0xH0003=20"); - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); - - ram[3] = 20; /* final condition is not enough to reset */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); - - ram[2] = 20; /* two conditions is not enough to reset */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 3U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); - - ram[1] = 20; /* all three conditions true, reset */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); - - ram[2] = 30; /* middle condition not true */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - - ram[2] = 20; /* all three conditions true */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - - ram[3] = 30; /* third condition not true */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - - ram[3] = 20; /* all three conditions true */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - } - - { - /*------------------------------------------------------------------------ - TestAndNextPause - ------------------------------------------------------------------------*/ - - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - /* byte(0x0000) == 0 && never(byte(0x0001) == 20 && byte(0x0002) == 20 && byte(0x0003) == 20) */ - parse_trigger(&trigger, buffer, "0xH0000=0_N:0xH0001=20_N:0xH0002=20_P:0xH0003=20"); - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); - - ram[3] = 20; /* final condition is not enough to pause */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); - - ram[2] = 20; /* two conditions is not enough to pause */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 3U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 0U); - - ram[1] = 20; /* all three conditions true, pause */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 3U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 3)->current_hits == 1U); - - ram[2] = 30; /* middle condition not true */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 4U); - - ram[2] = 20; /* all three conditions true */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 4U); - - ram[3] = 30; /* third condition not true */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 5U); - - ram[3] = 20; /* all three conditions true */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 5U); - } - - { - /*------------------------------------------------------------------------ - TestAddHits - ------------------------------------------------------------------------*/ - - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_trigger_t* trigger; - char buffer[2048]; - - rc_condset_t* condset; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "C:0xH0001=18(2)_0xL0004=6(4)"); /* repeated(4, byte(1) == 18 || low(4) == 6) */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - comp_trigger(trigger, &memory, 1); /* total hits met (2 for each condition) */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); - - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); /* threshold met, stop incrementing */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); /* total met prevents incrementing even though individual tally has not reached total */ - - rc_reset_condset(trigger->requirement); - - for (condset = trigger->alternative; condset != NULL; condset = condset->next) - { - rc_reset_condset(condset); - } - - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 1U); - - ram[1] = 16; - comp_trigger(trigger, &memory, 0); /* 1 + 2 < 4, not met */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 2U); - - comp_trigger(trigger, &memory, 1); /* 1 + 3 = 4, met */ - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 3U); - } - - { - /*------------------------------------------------------------------------ - TestAndNextAddSource - ------------------------------------------------------------------------*/ - - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_trigger_t* trigger; - - memory.ram = ram; - memory.size = sizeof(ram); - - /* once(byte(0x0001) + byte(0x0002) == 20 && byte(0x0003) == 20) */ - parse_trigger(&trigger, buffer, "A:0xH0001=0_N:0xH0002=20_0xH0003=20.1."); - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - - ram[3] = 20; /* final condition is true */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - - ram[2] = 20; /* AddSource condition would be true if AddSource ignored */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 0U); - - ram[2] = 10; - ram[1] = 10; /* AddSource condition true only via addition, whole trigger is true */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 1)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 0), 2)->current_hits == 1U); - } - - { - /*------------------------------------------------------------------------ - TestAndNextChangesTo - ------------------------------------------------------------------------*/ - - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_trigger_t* trigger; - char buffer[2048]; - - memory.ram = ram; - memory.size = sizeof(ram); - - /* byte(0x0001) ~> 18 */ - parse_trigger(&trigger, buffer, "N:0xH0001=18_d0xH0001!=18"); - - /* value already 18, initial delta value is 0, so considered changed */ - comp_trigger(trigger, &memory, 1); - - /* value already 18 */ - comp_trigger(trigger, &memory, 0); - - /* value no longer 18 */ - ram[1] = 20; - comp_trigger(trigger, &memory, 0); - - /* value changes to 18 */ - ram[1] = 18; - comp_trigger(trigger, &memory, 1); - - /* value already 18 */ - comp_trigger(trigger, &memory, 0); - } - - { - /*------------------------------------------------------------------------ - TestAltGroups - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - char buffer[2048]; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "0xH0001=16S0xH0002=52S0xL0004=6"); - - /* core not true, both alts are */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 2), 0)->current_hits == 1U); - - ram[1] = 16; /* core and both alts true */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 2), 0)->current_hits == 2U); - - ram[4] = 0; /* core and first alt true */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 3U); - assert(condset_get_cond(trigger_get_set(trigger, 2), 0)->current_hits == 2U); - - ram[2] = 0; /* core true, but neither alt is */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 3U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 3U); - assert(condset_get_cond(trigger_get_set(trigger, 2), 0)->current_hits == 2U); - - ram[4] = 6; /* core and second alt true */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 4U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 3U); - assert(condset_get_cond(trigger_get_set(trigger, 2), 0)->current_hits == 3U); - } - - { - /*------------------------------------------------------------------------ - TestResetIfInAltGroup - Verifies that a ResetIf resets everything regardless of where it is - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - char buffer[2048]; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "0xH0001=18(1)_R:0xH0000=1S0xH0002=52(1)S0xL0004=6(1)_R:0xH0000=2"); - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 2), 0)->current_hits == 1U); - - ram[0] = 1; /* reset in core group resets everything */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 2), 0)->current_hits == 0U); - - ram[0] = 0; - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 2), 0)->current_hits == 1U); - - ram[0] = 2; /* reset in alt group resets everything */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 0U); - assert(condset_get_cond(trigger_get_set(trigger, 2), 0)->current_hits == 0U); - } - - { - /*------------------------------------------------------------------------ - TestPauseIfInAltGroup - Verifies that PauseIf only pauses the group it's in - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - char buffer[2048]; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "0xH0001=18_P:0xH0000=1S0xH0002=52S0xL0004=6_P:0xH0000=2"); - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 2), 0)->current_hits == 1U); - - ram[0] = 1; /* pause in core group only pauses core group */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 2), 0)->current_hits == 2U); - - ram[0] = 0; - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 2U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 3U); - assert(condset_get_cond(trigger_get_set(trigger, 2), 0)->current_hits == 3U); - - ram[0] = 2; /* pause in alt group only pauses alt group */ - comp_trigger(trigger, &memory, 1); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 3U); - assert(condset_get_cond(trigger_get_set(trigger, 1), 0)->current_hits == 4U); - assert(condset_get_cond(trigger_get_set(trigger, 2), 0)->current_hits == 3U); - } - - { - /*------------------------------------------------------------------------ - TestPauseIfResetIfAltGroup - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - char buffer[2048]; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_trigger(&trigger, buffer, "0xH0000=0.1._0xH0000=2SP:0xH0001=18_R:0xH0002=52"); - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - - ram[0] = 1; /* move off HitCount */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - - ram[1] = 16; /* unpause alt group, HitCount should be reset */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 0U); - - ram[0] = 0; - ram[1] = 18; /* repause alt group, reset hitcount target, hitcount should be set */ - comp_trigger(trigger, &memory, 0); - assert(condset_get_cond(trigger_get_set(trigger, 0), 0)->current_hits == 1U); - - ram[0] = 2; /* trigger win condition. alt group has no normal conditions, it should be considered false */ - comp_trigger(trigger, &memory, 0); - } -} - -static void parse_comp_term(const char* memaddr, char expected_var_size, unsigned expected_address, int is_bcd, int is_const) { - rc_term_t self; - rc_scratch_t scratch; - int ret; - - ret = 0; - rc_parse_term(&ret, &self, &scratch, &memaddr, NULL, 0); - assert(ret >= 0); - assert(*memaddr == 0); - - assert(is_const || self.operand1.size == expected_var_size); - assert(self.operand1.value == expected_address); - assert(self.operand1.is_bcd == is_bcd); - assert(self.invert == 0); - assert(self.operand2.size == RC_OPERAND_8_BITS); - assert(self.operand2.value == 0U); - assert(!is_const || self.operand1.type == RC_OPERAND_CONST); -} - -static void parse_comp_term_fp(const char* memaddr, char expected_var_size, unsigned expected_address, double fp) { - rc_term_t self; - rc_scratch_t scratch; - int ret; - - ret = 0; - rc_parse_term(&ret, &self, &scratch, &memaddr, NULL, 0); - assert(ret >= 0); - assert(*memaddr == 0); - - assert(self.operand1.size == expected_var_size); - assert(self.operand1.value == expected_address); - assert(self.operand2.type == RC_OPERAND_FP); - assert(self.operand2.fp_value == fp); -} - -static void parse_comp_term_mem(const char* memaddr, char expected_size_1, unsigned expected_address_1, char expected_size_2, unsigned expected_address_2) { - rc_term_t self; - rc_scratch_t scratch; - int ret; - - ret = 0; - rc_parse_term(&ret, &self, &scratch, &memaddr, NULL, 0); - assert(ret >= 0); - assert(*memaddr == 0); - - assert(self.operand1.size == expected_size_1); - assert(self.operand1.value == expected_address_1); - assert(self.operand2.size == expected_size_2); - assert(self.operand2.value == expected_address_2); -} - -static void parse_comp_term_value(const char* memaddr, memory_t* memory, unsigned value) { - rc_term_t self; - rc_scratch_t scratch; - int ret; - - ret = 0; - rc_parse_term(&ret, &self, &scratch, &memaddr, NULL, 0); - assert(ret >= 0); - assert(*memaddr == 0); - - assert(rc_evaluate_term(&self, peek, memory, NULL) == value); -} - -static void test_term(void) { - { - /*------------------------------------------------------------------------ - TestClauseParseFromString - ------------------------------------------------------------------------*/ - - /* sizes */ - parse_comp_term("0xH1234", RC_OPERAND_8_BITS, 0x1234U, 0, 0); - parse_comp_term("0x 1234", RC_OPERAND_16_BITS, 0x1234U, 0, 0); - parse_comp_term("0x1234", RC_OPERAND_16_BITS, 0x1234U, 0, 0); - parse_comp_term("0xW1234", RC_OPERAND_24_BITS, 0x1234U, 0, 0); - parse_comp_term("0xX1234", RC_OPERAND_32_BITS, 0x1234U, 0, 0); - parse_comp_term("0xL1234", RC_OPERAND_LOW, 0x1234U, 0, 0); - parse_comp_term("0xU1234", RC_OPERAND_HIGH, 0x1234U, 0, 0); - parse_comp_term("0xM1234", RC_OPERAND_BIT_0, 0x1234U, 0, 0); - parse_comp_term("0xN1234", RC_OPERAND_BIT_1, 0x1234U, 0, 0); - parse_comp_term("0xO1234", RC_OPERAND_BIT_2, 0x1234U, 0, 0); - parse_comp_term("0xP1234", RC_OPERAND_BIT_3, 0x1234U, 0, 0); - parse_comp_term("0xQ1234", RC_OPERAND_BIT_4, 0x1234U, 0, 0); - parse_comp_term("0xR1234", RC_OPERAND_BIT_5, 0x1234U, 0, 0); - parse_comp_term("0xS1234", RC_OPERAND_BIT_6, 0x1234U, 0, 0); - parse_comp_term("0xT1234", RC_OPERAND_BIT_7, 0x1234U, 0, 0); - - /* BCD */ - parse_comp_term("B0xH1234", RC_OPERAND_8_BITS, 0x1234U, 1, 0); - parse_comp_term("B0xX1234", RC_OPERAND_32_BITS, 0x1234U, 1, 0); - parse_comp_term("b0xH1234", RC_OPERAND_8_BITS, 0x1234U, 1, 0); - - /* Value */ - parse_comp_term("V1234", 0, 1234, 0, 1); - parse_comp_term("V+1", 0, 1, 0, 1); - parse_comp_term("V-1", 0, 0xFFFFFFFFU, 0, 1); - parse_comp_term("V-2", 0, 0xFFFFFFFEU, 0, 1); /* twos compliment still works for addition */ - } - - { - /*------------------------------------------------------------------------ - TestClauseParseFromStringMultiply - ------------------------------------------------------------------------*/ - - parse_comp_term_fp("0xH1234", RC_OPERAND_8_BITS, 0x1234U, 1.0); - parse_comp_term_fp("0xH1234*1", RC_OPERAND_8_BITS, 0x1234U, 1.0); - parse_comp_term_fp("0xH1234*3", RC_OPERAND_8_BITS, 0x1234U, 3.0); - parse_comp_term_fp("0xH1234*0.5", RC_OPERAND_8_BITS, 0x1234U, 0.5); - parse_comp_term_fp("0xH1234*.5", RC_OPERAND_8_BITS, 0x1234U, 0.5); - parse_comp_term_fp("0xH1234*-1", RC_OPERAND_8_BITS, 0x1234U, -1.0); - } - - { - /*------------------------------------------------------------------------ - TestClauseParseFromStringMultiplyAddress - ------------------------------------------------------------------------*/ - - parse_comp_term_mem("0xH1234", RC_OPERAND_8_BITS, 0x1234U, RC_OPERAND_8_BITS, 0U); - parse_comp_term_mem("0xH1234*0xH3456", RC_OPERAND_8_BITS, 0x1234U, RC_OPERAND_8_BITS, 0x3456U); - parse_comp_term_mem("0xH1234*0xL2222", RC_OPERAND_8_BITS, 0x1234U, RC_OPERAND_LOW, 0x2222U); - parse_comp_term_mem("0xH1234*0x1111", RC_OPERAND_8_BITS, 0x1234U, RC_OPERAND_16_BITS, 0x1111U); - } - - { - /*------------------------------------------------------------------------ - TestClauseGetValue - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - - memory.ram = ram; - memory.size = sizeof(ram); - - /* value */ - parse_comp_term_value("V6", &memory, 6); - parse_comp_term_value("V6*2", &memory, 12); - parse_comp_term_value("V6*0.5", &memory, 3); - parse_comp_term_value("V-6", &memory, (unsigned)(-6)); - parse_comp_term_value("V-6*2", &memory, (unsigned)(-12)); - - /* memory */ - parse_comp_term_value("0xH01", &memory, 0x12); - parse_comp_term_value("0x0001", &memory, 0x3412); - - /* BCD encoding */ - parse_comp_term_value("B0xH01", &memory, 12); - parse_comp_term_value("B0x0001", &memory, 3412); - - /* multiplication */ - parse_comp_term_value("0xH01*4", &memory, 0x12 * 4); /* multiply by constant */ - parse_comp_term_value("0xH01*0.5", &memory, 0x12 / 2); /* multiply by fraction */ - parse_comp_term_value("0xH01*0xH02", &memory, 0x12 * 0x34); /* multiply by second address */ - parse_comp_term_value("0xH01*0xT02", &memory, 0); /* multiply by bit */ - parse_comp_term_value("0xH01*~0xT02", &memory, 0x12); /* multiply by inverse bit */ - parse_comp_term_value("0xH01*~0xH02", &memory, 0x12 * (0x34 ^ 0xff)); /* multiply by inverse byte */ - } -} - -static void parse_comp_value(const char* memaddr, memory_t* memory, unsigned expected_value) { - rc_value_t* self; - char buffer[2048]; - int ret; - - ret = rc_value_size(memaddr); - assert(ret >= 0); - memset(buffer, 0xEE, ret + 128); - - self = rc_parse_value(buffer, memaddr, NULL, 0); - assert(self != NULL); - assert(*((int*)((char*)buffer + ret)) == 0xEEEEEEEE); - - assert(rc_evaluate_value(self, peek, memory, NULL) == expected_value); -} - -static void test_value(void) { - { - /*------------------------------------------------------------------------ - TestAdditionSimple - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - - memory.ram = ram; - memory.size = sizeof(ram); - - parse_comp_value("0xH0001_0xH0002", &memory, 0x12U + 0x34U); /* TestAdditionSimple */ - parse_comp_value("0xH0001*100_0xH0002*0.5_0xL0003", &memory, 0x12U * 100 + 0x34U / 2 + 0x0B);/* TestAdditionComplex */ - parse_comp_value("0xH0001$0xH0002", &memory, 0x34U);/* TestMaximumSimple */ - parse_comp_value("0xH0001_0xH0004*3$0xH0002*0xL0003", &memory, 0x34U * 0xBU);/* TestMaximumComplex */ - } - - { - /*------------------------------------------------------------------------ - TestFormatValue - ------------------------------------------------------------------------*/ - - char buffer[64]; - - rc_format_value(buffer, sizeof(buffer), 12345, RC_FORMAT_VALUE); - assert(!strcmp("12345", buffer)); - - rc_format_value(buffer, sizeof(buffer), 12345, RC_FORMAT_OTHER); - assert(!strcmp("012345", buffer)); - - rc_format_value(buffer, sizeof(buffer), 12345, RC_FORMAT_SCORE); - assert(!strcmp("012345 Points", buffer)); - - rc_format_value(buffer, sizeof(buffer), 12345, RC_FORMAT_SECONDS); - assert(!strcmp("205:45", buffer)); - - rc_format_value(buffer, sizeof(buffer), 12345, RC_FORMAT_CENTISECS); - assert(!strcmp("02:03.45", buffer)); - - rc_format_value(buffer, sizeof(buffer), 12345, RC_FORMAT_FRAMES); - assert(!strcmp("03:25.75", buffer)); - - rc_format_value(buffer, sizeof(buffer), 345, RC_FORMAT_SECONDS); - assert(!strcmp("05:45", buffer)); - - rc_format_value(buffer, sizeof(buffer), 345, RC_FORMAT_CENTISECS); - assert(!strcmp("00:03.45", buffer)); - - rc_format_value(buffer, sizeof(buffer), 345, RC_FORMAT_FRAMES); - assert(!strcmp("00:05.75", buffer)); - } - - { - /*------------------------------------------------------------------------ - TestParseMemValueFormat - ------------------------------------------------------------------------*/ - - assert(rc_parse_format("VALUE") == RC_FORMAT_VALUE); - assert(rc_parse_format("SECS") == RC_FORMAT_SECONDS); - assert(rc_parse_format("TIMESECS") == RC_FORMAT_SECONDS); - assert(rc_parse_format("TIME") == RC_FORMAT_FRAMES); - assert(rc_parse_format("FRAMES") == RC_FORMAT_FRAMES); - assert(rc_parse_format("SCORE") == RC_FORMAT_SCORE); - assert(rc_parse_format("POINTS") == RC_FORMAT_SCORE); - assert(rc_parse_format("MILLISECS") == RC_FORMAT_CENTISECS); - assert(rc_parse_format("OTHER") == RC_FORMAT_OTHER); - assert(rc_parse_format("INVALID") == RC_FORMAT_VALUE); - } -} - -static rc_lboard_t* parse_lboard(const char* memaddr, void* buffer) { - int ret; - rc_lboard_t* self; - - ret = rc_lboard_size(memaddr); - assert(ret >= 0); - memset(buffer, 0xEE, ret + 128); - - self = rc_parse_lboard(buffer, memaddr, NULL, 0); - assert(self != NULL); - assert(*((int*)((char*)buffer + ret)) == 0xEEEEEEEE); - - return self; -} - -static void lboard_check(const char* memaddr, int expected_ret) { - int ret = rc_lboard_size(memaddr); - assert(ret == expected_ret); -} - -typedef struct { - int active, submitted; -} -lboard_test_state_t; - -static void lboard_reset(rc_lboard_t* lboard, lboard_test_state_t* state) { - rc_reset_lboard(lboard); - state->active = state->submitted = 0; -} - -static unsigned lboard_evaluate(rc_lboard_t* lboard, lboard_test_state_t* test, memory_t* memory) { - unsigned value; - - switch (rc_evaluate_lboard(lboard, &value, peek, memory, NULL)) { - case RC_LBOARD_STARTED: - test->active = 1; - break; - - case RC_LBOARD_CANCELED: - test->active = 0; - break; - - case RC_LBOARD_TRIGGERED: - test->active = 0; - test->submitted = 1; - break; - } - - return value; -} - -static void test_lboard(void) { - char buffer[2048]; - - { - /*------------------------------------------------------------------------ - TestSimpleLeaderboard - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_lboard_t* lboard; - lboard_test_state_t state; - unsigned value; - - memory.ram = ram; - memory.size = sizeof(ram); - - lboard = parse_lboard("STA:0xH00=1::CAN:0xH00=2::SUB:0xH00=3::VAL:0xH02", buffer); - state.active = state.submitted = 0; - - assert(!state.active); - assert(!state.submitted); - - value = lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - assert(!state.submitted); - - ram[0] = 3; /* submit value, but not active */ - value = lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - assert(!state.submitted); - - ram[0] = 2; /* cancel value, but not active */ - value = lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - assert(!state.submitted); - - ram[0] = 1; /* start value */ - value = lboard_evaluate(lboard, &state, &memory); - assert(state.active); - assert(!state.submitted); - - ram[0] = 2; /* cancel value */ - value = lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - assert(!state.submitted); - - ram[0] = 3; /* submit value, but not active */ - value = lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - assert(!state.submitted); - - ram[0] = 1; /* start value */ - value = lboard_evaluate(lboard, &state, &memory); - assert(state.active); - assert(!state.submitted); - - ram[0] = 3; /* submit value */ - value = lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - assert(state.submitted); - assert(value == 0x34U); - } - - { - /*------------------------------------------------------------------------ - TestStartAndCancelSameFrame - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_lboard_t* lboard; - lboard_test_state_t state; - - memory.ram = ram; - memory.size = sizeof(ram); - - lboard = parse_lboard("STA:0xH00=0::CAN:0xH01=18::SUB:0xH00=3::VAL:0xH02", buffer); - state.active = state.submitted = 0; - - lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - assert(!state.submitted); - - ram[1] = 0x13; /* disables cancel */ - lboard_evaluate(lboard, &state, &memory); - assert(state.active); - assert(!state.submitted); - - ram[1] = 0x12; /* enables cancel */ - lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - assert(!state.submitted); - - ram[1] = 0x13; /* disables cancel, but start condition still true, so it shouldn't restart */ - lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - assert(!state.submitted); - - ram[0] = 0x01; /* disables start; no effect this frame, but next frame can restart */ - lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - assert(!state.submitted); - - ram[0] = 0x00; /* enables start */ - lboard_evaluate(lboard, &state, &memory); - assert(state.active); - assert(!state.submitted); - } - - { - /*------------------------------------------------------------------------ - TestStartAndSubmitSameFrame - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_lboard_t* lboard; - lboard_test_state_t state; - unsigned value; - - memory.ram = ram; - memory.size = sizeof(ram); - - lboard = parse_lboard("STA:0xH00=0::CAN:0xH01=10::SUB:0xH01=18::VAL:0xH02", buffer); - state.active = state.submitted = 0; - - value = lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - assert(state.submitted); - assert(value == 0x34U); - - ram[1] = 0; /* disable submit, value should not be resubmitted, */ - value = lboard_evaluate(lboard, &state, &memory); /* start is still true, but leaderboard should not reactivate */ - assert(!state.active); - - ram[0] = 1; /* disable start */ - value = lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - - ram[0] = 0; /* reenable start, leaderboard should reactivate */ - value = lboard_evaluate(lboard, &state, &memory); - assert(state.active); - } - - { - /*------------------------------------------------------------------------ - TestProgress - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_lboard_t* lboard; - lboard_test_state_t state; - unsigned value; - - memory.ram = ram; - memory.size = sizeof(ram); - - lboard = parse_lboard("STA:0xH00=0::CAN:0xH00=2::SUB:0xH00=3::PRO:0xH04::VAL:0xH02", buffer); - state.active = state.submitted = 0; - - value = lboard_evaluate(lboard, &state, &memory); - assert(state.active); - assert(value == 0x56U); - - lboard = parse_lboard("STA:0xH00=0::CAN:0xH00=2::SUB:0xH00=3::VAL:0xH02", buffer); - state.active = state.submitted = 0; - - value = lboard_evaluate(lboard, &state, &memory); - assert(state.active); - assert(value == 0x34U); - } - - { - /*------------------------------------------------------------------------ - TestStartAndCondition - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_lboard_t* lboard; - lboard_test_state_t state; - - memory.ram = ram; - memory.size = sizeof(ram); - - lboard = parse_lboard("STA:0xH00=0_0xH01=0::CAN:0xH01=10::SUB:0xH01=18::VAL:0xH02", buffer); - state.active = state.submitted = 0; - - lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - - ram[1] = 0; /* second part of start condition is true */ - lboard_evaluate(lboard, &state, &memory); - assert(state.active); - } - - { - /*------------------------------------------------------------------------ - TestStartOrCondition - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_lboard_t* lboard; - lboard_test_state_t state; - - memory.ram = ram; - memory.size = sizeof(ram); - - lboard = parse_lboard("STA:S0xH00=1S0xH01=1::CAN:0xH01=10::SUB:0xH01=18::VAL:0xH02", buffer); - state.active = state.submitted = 0; - - lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - - ram[1] = 1; /* second part of start condition is true */ - lboard_evaluate(lboard, &state, &memory); - assert(state.active); - - ram[1] = 0; - lboard_reset(lboard, &state); - lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - - ram[0] = 1; /* first part of start condition is true */ - lboard_evaluate(lboard, &state, &memory); - assert(state.active); - } - - { - /*------------------------------------------------------------------------ - TestCancelOrCondition - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_lboard_t* lboard; - lboard_test_state_t state; - - memory.ram = ram; - memory.size = sizeof(ram); - - lboard = parse_lboard("STA:0xH00=0::CAN:S0xH01=12S0xH02=12::SUB:0xH00=3::VAL:0xH02", buffer); - state.active = state.submitted = 0; - - lboard_evaluate(lboard, &state, &memory); - assert(state.active); - - ram[2] = 12; /* second part of cancel condition is true */ - lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - - ram[2] = 0; /* second part of cancel condition is false */ - lboard_reset(lboard, &state); - lboard_evaluate(lboard, &state, &memory); - assert(state.active); - - ram[1] = 12; /* first part of cancel condition is true */ - lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - } - - { - /*------------------------------------------------------------------------ - TestSubmitAndCondition - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_lboard_t* lboard; - lboard_test_state_t state; - - memory.ram = ram; - memory.size = sizeof(ram); - - lboard = parse_lboard("STA:0xH00=0::CAN:0xH01=10::SUB:0xH01=18_0xH03=18::VAL:0xH02", buffer); - state.active = state.submitted = 0; - - lboard_evaluate(lboard, &state, &memory); - assert(state.active); - - ram[3] = 18; - lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - assert(state.submitted); - } - - { - /*------------------------------------------------------------------------ - TestSubmitOrCondition - ------------------------------------------------------------------------*/ - - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_lboard_t* lboard; - lboard_test_state_t state; - - memory.ram = ram; - memory.size = sizeof(ram); - - lboard = parse_lboard("STA:0xH00=0::CAN:0xH01=10::SUB:S0xH01=12S0xH03=12::VAL:0xH02", buffer); - state.active = state.submitted = 0; - - lboard_evaluate(lboard, &state, &memory); - assert(state.active); - - ram[3] = 12; /* second part of submit condition is true */ - lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - assert(state.submitted); - - ram[3] = 0; - lboard_reset(lboard, &state); - lboard_evaluate(lboard, &state, &memory); - assert(state.active); - - ram[1] = 12; /* first part of submit condition is true */ - lboard_evaluate(lboard, &state, &memory); - assert(!state.active); - assert(state.submitted); - } - - { - /*------------------------------------------------------------------------ - TestUnparsableStringWillNotStart - We'll test for errors in the memaddr field instead - ------------------------------------------------------------------------*/ - - lboard_check("STA:0xH00=0::CAN:0xH00=2::SUB:0xH00=3::PRO:0xH04::VAL:0xH02::GARBAGE", RC_INVALID_LBOARD_FIELD); - lboard_check("CAN:0xH00=2::SUB:0xH00=3::PRO:0xH04::VAL:0xH02", RC_MISSING_START); - lboard_check("STA:0xH00=0::SUB:0xH00=3::PRO:0xH04::VAL:0xH02", RC_MISSING_CANCEL); - lboard_check("STA:0xH00=0::CAN:0xH00=2::PRO:0xH04::VAL:0xH02", RC_MISSING_SUBMIT); - lboard_check("STA:0xH00=0::CAN:0xH00=2::SUB:0xH00=3::PRO:0xH04", RC_MISSING_VALUE); - lboard_check("STA:0xH00=0::CAN:0xH00=2::SUB:0xH00=3::PRO:0xH04::VAL:0xH02::STA:0=0", RC_DUPLICATED_START); - lboard_check("STA:0xH00=0::CAN:0xH00=2::SUB:0xH00=3::PRO:0xH04::VAL:0xH02::CAN:0=0", RC_DUPLICATED_CANCEL); - lboard_check("STA:0xH00=0::CAN:0xH00=2::SUB:0xH00=3::PRO:0xH04::VAL:0xH02::SUB:0=0", RC_DUPLICATED_SUBMIT); - lboard_check("STA:0xH00=0::CAN:0xH00=2::SUB:0xH00=3::PRO:0xH04::VAL:0xH02::VAL:0", RC_DUPLICATED_VALUE); - lboard_check("STA:0xH00=0::CAN:0xH00=2::SUB:0xH00=3::PRO:0xH04::VAL:0xH02::PRO:0", RC_DUPLICATED_PROGRESS); - } -} - -static rc_richpresence_t* parse_richpresence(const char* script, void* buffer) { - int ret; - rc_richpresence_t* self; - - ret = rc_richpresence_size(script); - assert(ret >= 0); - memset(buffer, 0xEE, ret + 128); - - self = rc_parse_richpresence(buffer, script, NULL, 0); - assert(self != NULL); - assert(*((int*)((char*)buffer + ret)) == 0xEEEEEEEE); - - return self; -} - -static void test_richpresence(void) { - { - /*------------------------------------------------------------------------ - TestStaticDisplayString - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Display:\nHello, world!", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "Hello, world!") == 0); - assert(result == 13); - } - - { - /*------------------------------------------------------------------------ - TestEscapedComment - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Display:\nWhat \\// Where", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "What // Where") == 0); - assert(result == 13); - } - - { - /*------------------------------------------------------------------------ - TestEscapedBackslash - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Display:\nWhat \\\\ Where", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "What \\ Where") == 0); - assert(result == 12); - } - - { - /*------------------------------------------------------------------------ - TestPartiallyEscapedComment - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Display:\nWhat \\/// Where", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "What /") == 0); - assert(result == 6); - } - - { - /*------------------------------------------------------------------------ - TestTrailingBackslash - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Display:\nWhat \\", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "What ") == 0); - assert(result == 5); - } - - { - /*------------------------------------------------------------------------ - TestConditionalDisplay - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Display:\n?0xH0000=0?Zero\n?0xH0000=1?One\nOther", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "Zero") == 0); - assert(result == 4); - - ram[0] = 1; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "One") == 0); - assert(result == 3); - - ram[0] = 2; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "Other") == 0); - assert(result == 5); - } - - { - /*------------------------------------------------------------------------ - TestConditionalDisplayOutOfOrder - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Display:\nOther\n?0xH0000=0?Zero\n?0xH0000=1?One", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "Other") == 0); - assert(result == 5); - } - - { - /*------------------------------------------------------------------------ - TestConditionalDisplayNoDefault - ------------------------------------------------------------------------*/ - int result = rc_richpresence_size("Display:\n?0xH0000=0?Zero"); - assert(result == RC_MISSING_DISPLAY_STRING); - } - - { - /*------------------------------------------------------------------------ - TestConditionalDisplayCommonPrefix - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Display:\n?0xH0000=0_0xH0001=18?First\n?0xH0000=0?Second\nThird", buffer); - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "First") == 0); - - ram[1] = 1; - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "Second") == 0); - - ram[0] = 1; - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "Third") == 0); - - ram[0] = 0; - ram[1] = 18; - richpresence = parse_richpresence("Display:\n?0xH0000=0?First\n?0xH0000=0_0xH0001=18?Second\nThird", buffer); - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "First") == 0); - - ram[1] = 1; - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "First") == 0); - - ram[0] = 1; - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "Third") == 0); - } - - { - /*------------------------------------------------------------------------ - TestConditionalDisplayDuplicatedCondition - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Display:\n?0xH0000=0?First\n?0xH0000=0?Second\nThird", buffer); - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "First") == 0); - - ram[0] = 1; - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "Third") == 0); - } - - { - /*------------------------------------------------------------------------ - TestConditionalDisplayInvalidCondition - ------------------------------------------------------------------------*/ - int result = rc_richpresence_size("Display:\n?BANANA?First\nOther"); - assert(result == RC_INVALID_MEMORY_OPERAND); - } - - { - /*------------------------------------------------------------------------ - TestValueMacro - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Format:Points\nFormatType=VALUE\n\nDisplay:\n@Points(0x 0001) Points", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "13330 Points") == 0); - assert(result == 12); - - ram[1] = 20; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "13332 Points") == 0); - assert(result == 12); - } - - { - /*------------------------------------------------------------------------ - TestFramesMacro - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Format:Frames\nFormatType=FRAMES\n\nDisplay:\n@Frames(0x 0001)", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "03:42.16") == 0); - assert(result == 8); - - ram[1] = 20; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "03:42.20") == 0); - assert(result == 8); - } - - { - /*------------------------------------------------------------------------ - TestValueMacroFormula - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Format:Points\nFormatType=VALUE\n\nDisplay:\n@Points(0xH0001*100_0xH0002) Points", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "1852 Points") == 0); - assert(result == 11); - - ram[1] = 0x20; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "3252 Points") == 0); - assert(result == 11); - } - - { - /*------------------------------------------------------------------------ - TestUndefinedMacro - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Display:\n@Points(0x 0001) Points", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "[Unknown macro]Points(0x 0001) Points") == 0); - assert(result == 37); - } - - { - /*------------------------------------------------------------------------ - TestEscapedMacro - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Format:Points\nFormatType=VALUE\n\nDisplay:\n\\@Points(0x 0001) \\@@Points(0x 0001) Points", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "@Points(0x 0001) @13330 Points") == 0); - assert(result == 30); - } - - { - /*------------------------------------------------------------------------ - TestLookup - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Lookup:Location\n0=Zero\n1=One\n\nDisplay:\nAt @Location(0xH0000)", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Zero") == 0); - assert(result == 7); - - ram[0] = 1; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At One") == 0); - assert(result == 6); - - ram[0] = 2; /* no entry */ - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At ") == 0); - assert(result == 3); - } - - { - /*------------------------------------------------------------------------ - TestLookupFormula - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Lookup:Location\n0=Zero\n1=One\n\nDisplay:\nAt @Location(0xH0000*0.5)", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Zero") == 0); - assert(result == 7); - - ram[0] = 1; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Zero") == 0); - assert(result == 7); - - ram[0] = 2; /* no entry */ - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At One") == 0); - assert(result == 6); - } - - { - /*------------------------------------------------------------------------ - TestLookupRepeated - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Lookup:Location\n0=Zero\n1=One\n\nDisplay:\nAt @Location(0xH0000), Near @Location(0xH0001)", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Zero, Near ") == 0); - assert(result == 14); - - ram[1] = 1; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Zero, Near One") == 0); - assert(result == 17); - - ram[0] = 1; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At One, Near One") == 0); - assert(result == 16); - } - - { - /*------------------------------------------------------------------------ - TestLookupMultiple - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Lookup:Location\n0=Zero\n1=One\n\nLookup:Location2\n0=zero\n1=one\n\nDisplay:\nAt @Location(0xH0000), Near @Location2(0xH0001)", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Zero, Near ") == 0); - assert(result == 14); - - ram[1] = 1; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Zero, Near one") == 0); - assert(result == 17); - - ram[0] = 1; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At One, Near one") == 0); - assert(result == 16); - } - - { - /*------------------------------------------------------------------------ - TestLookupAndValue - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Lookup:Location\n0=Zero\n1=One\n\nFormat:Location2\nFormatType=VALUE\n\nDisplay:\nAt @Location(0xH0000), Near @Location2(0xH0001)", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Zero, Near 18") == 0); - assert(result == 16); - - ram[1] = 1; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Zero, Near 1") == 0); - assert(result == 15); - - ram[0] = 1; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At One, Near 1") == 0); - assert(result == 14); - } - - { - /*------------------------------------------------------------------------ - TestLookupHexKeys - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Lookup:Location\n0x00=Zero\n0x01=One\n\nDisplay:\nAt @Location(0xH0000)", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Zero") == 0); - assert(result == 7); - - ram[0] = 1; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At One") == 0); - assert(result == 6); - - ram[0] = 2; /* no entry */ - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At ") == 0); - assert(result == 3); - } - - { - /*------------------------------------------------------------------------ - TestLookupDefault - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Lookup:Location\n0=Zero\n1=One\n*=Star\n\nDisplay:\nAt @Location(0xH0000)", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Zero") == 0); - assert(result == 7); - - ram[0] = 1; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At One") == 0); - assert(result == 6); - - ram[0] = 2; /* no entry */ - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Star") == 0); - assert(result == 7); - } - - { - /*------------------------------------------------------------------------ - TestLookupCRLF - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Lookup:Location\r\n0=Zero\r\n1=One\r\n\r\nDisplay:\r\nAt @Location(0xH0000)\r\n", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Zero") == 0); - assert(result == 7); - - ram[0] = 1; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At One") == 0); - assert(result == 6); - - ram[0] = 2; /* no entry */ - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At ") == 0); - assert(result == 3); - } - - { - /*------------------------------------------------------------------------ - TestLookupAfterDisplay - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Display:\nAt @Location(0xH0000)\n\nLookup:Location\n0=Zero\n1=One", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Zero") == 0); - assert(result == 7); - - ram[0] = 1; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At One") == 0); - assert(result == 6); - - ram[0] = 2; /* no entry */ - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At ") == 0); - assert(result == 3); - } - - { - /*------------------------------------------------------------------------ - TestLookupWhitespace - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - int result; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Lookup:Location\n0= Zero \n1= One \n\nDisplay:\nAt '@Location(0xH0000)' ", buffer); - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At ' Zero ' ") == 0); - assert(result == 12); - - ram[0] = 1; - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At ' One ' ") == 0); - assert(result == 11); - - ram[0] = 2; /* no entry */ - result = rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At '' ") == 0); - assert(result == 6); - } - - { - /*------------------------------------------------------------------------ - TestRandomTextBetweenSections - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - - memory.ram = ram; - memory.size = sizeof(ram); - - /* Anything that doesn't begin with "Format:" "Lookup:" or "Display:" is ignored. People sometimes - use this logic to add comments to the Rich Presence script - particularly author comments */ - richpresence = parse_richpresence("Locations are fun!\nLookup:Location\n0=Zero\n1=One\n\nDisplay goes here\nDisplay:\nAt @Location(0xH0000)\n\nWritten by User3", buffer); - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Zero") == 0); - - ram[0] = 1; - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At One") == 0); - - ram[0] = 2; /* no entry */ - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At ") == 0); - } - - { - /*------------------------------------------------------------------------ - TestComments - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("// Locations are fun!\nLookup:Location // lookup\n0=Zero // 0\n1=One // 1\n\n//Display goes here\nDisplay: // display\nAt @Location(0xH0000) // text\n\n//Written by User3", buffer); - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Zero") == 0); - - ram[0] = 1; - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At One") == 0); - - ram[0] = 2; /* no entry */ - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At ") == 0); - } - - { - /*------------------------------------------------------------------------ - TestConditionalDisplaySharedLookup - ------------------------------------------------------------------------*/ - unsigned char ram[] = { 0x00, 0x12, 0x34, 0xAB, 0x56 }; - memory_t memory; - rc_richpresence_t* richpresence; - char buffer[2048]; - char output[128]; - - memory.ram = ram; - memory.size = sizeof(ram); - - richpresence = parse_richpresence("Lookup:Location\n0x00=Zero\n0x01=One\n\nDisplay:\n?0xH0001=18?At @Location(0xH0000)\nNear @Location(0xH0000)", buffer); - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At Zero") == 0); - - ram[0] = 1; - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "At One") == 0); - - ram[1] = 17; - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "Near One") == 0); - - ram[0] = 0; - rc_evaluate_richpresence(richpresence, output, sizeof(output), peek, &memory, NULL); - assert(strcmp(output, "Near Zero") == 0); - } -} - -static void test_lua(void) { - { - /*------------------------------------------------------------------------ - TestLua - ------------------------------------------------------------------------*/ - -#ifndef RC_DISABLE_LUA - - lua_State* L; - const char* luacheevo = "return { test = function(peek, ud) return peek(0, 4, ud) end }"; - unsigned char ram[] = {0x00, 0x12, 0x34, 0xAB, 0x56}; - memory_t memory; - rc_trigger_t* trigger; - char buffer[2048]; - - memory.ram = ram; - memory.size = sizeof(ram); - - L = luaL_newstate(); - luaL_loadbufferx(L, luacheevo, strlen(luacheevo), "luacheevo.lua", "t"); - lua_call(L, 0, 1); - - memory.ram = ram; - memory.size = sizeof(ram); - - trigger = rc_parse_trigger(buffer, "@test=0xX0", L, 1); - assert(rc_test_trigger(trigger, peek, &memory, L) != 0); - -#endif /* RC_DISABLE_LUA */ - } -} - -int main(void) { - test_operand(); - test_condition(); - test_trigger(); - test_term(); - test_value(); - test_lboard(); - test_richpresence(); - test_lua(); - - return 0; -} diff --git a/griffin/griffin.c b/griffin/griffin.c index 6a629b413b..79204bf3b5 100644 --- a/griffin/griffin.c +++ b/griffin/griffin.c @@ -158,15 +158,27 @@ ACHIEVEMENTS #include "../libretro-common/formats/json/jsonsax.c" #include "../network/net_http_special.c" +#include "../cheevos/cheevos.c" +#include "../cheevos/badges.c" +#include "../cheevos/cond.c" +#include "../cheevos/var.c" + #include "../cheevos-new/cheevos.c" #include "../cheevos-new/fixup.c" #include "../cheevos-new/hash.c" #include "../cheevos-new/parser.c" -#include "../cheevos/cheevos.c" -#include "../cheevos/badges.c" -#include "../cheevos/cond.c" -#include "../cheevos/var.c" +#include "../deps/rcheevos/src/rcheevos/alloc.c" +#include "../deps/rcheevos/src/rcheevos/condition.c" +#include "../deps/rcheevos/src/rcheevos/condset.c" +#include "../deps/rcheevos/src/rcheevos/expression.c" +#include "../deps/rcheevos/src/rcheevos/format.c" +#include "../deps/rcheevos/src/rcheevos/lboard.c" +#include "../deps/rcheevos/src/rcheevos/operand.c" +#include "../deps/rcheevos/src/rcheevos/term.c" +#include "../deps/rcheevos/src/rcheevos/trigger.c" +#include "../deps/rcheevos/src/rcheevos/value.c" +#include "../deps/rcheevos/src/rurl/url.c" #endif @@ -1223,6 +1235,7 @@ MENU #include "../menu/menu_shader.c" #include "../menu/menu_displaylist.c" #include "../menu/menu_animation.c" +#include "../menu/menu_thumbnail_path.c" #include "../menu/drivers/null.c" #include "../menu/drivers/menu_generic.c" From c66b866a87a28ac3f6a06e5d9bda8ccbfba405de Mon Sep 17 00:00:00 2001 From: meleu Date: Sun, 24 Mar 2019 12:51:31 -0300 Subject: [PATCH 5/9] OSD msg when using new cheevos implementation --- cheevos-new/cheevos.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/cheevos-new/cheevos.c b/cheevos-new/cheevos.c index fb9b3bbd68..845bfdcb25 100644 --- a/cheevos-new/cheevos.c +++ b/cheevos-new/cheevos.c @@ -1386,6 +1386,11 @@ found: const rcheevos_cheevo_t* end = cheevo + rcheevos_locals.patchdata.core_count; int number_of_unlocked = rcheevos_locals.patchdata.core_count; + /* RCHEEVOS TODO: remove this msg */ + snprintf(msg, sizeof(msg), "cheevos: using the new implementation."); + msg[sizeof(msg) - 1] = 0; + runloop_msg_queue_push(msg, 0, 3 * 60, false, NULL, MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO); + if (coro->settings->bools.cheevos_hardcore_mode_enable && !rcheevos_hardcore_paused) mode = RCHEEVOS_ACTIVE_HARDCORE; From a77327d20e1ebbdbb828e613de30cb6418ab0a9f Mon Sep 17 00:00:00 2001 From: meleu Date: Sun, 24 Mar 2019 19:11:48 -0300 Subject: [PATCH 6/9] preventing "always false" alerts --- deps/rcheevos/src/rcheevos/operand.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/deps/rcheevos/src/rcheevos/operand.c b/deps/rcheevos/src/rcheevos/operand.c index 941ab75f24..4843641f5a 100644 --- a/deps/rcheevos/src/rcheevos/operand.c +++ b/deps/rcheevos/src/rcheevos/operand.c @@ -118,7 +118,7 @@ static int rc_parse_operand_memory(rc_operand_t* self, const char** memaddr) { break; } - value = (unsigned)strtoul(aux, &end, 16); + value = strtoul(aux, &end, 16); if (end == aux) { return RC_INVALID_MEMORY_OPERAND; @@ -213,7 +213,7 @@ static int rc_parse_operand_term(rc_operand_t* self, const char** memaddr, lua_S switch (*aux) { case 'h': case 'H': - value = (unsigned)strtoul(++aux, &end, 16); + value = strtoul(++aux, &end, 16); if (end == aux) { return RC_INVALID_CONST_OPERAND; @@ -230,7 +230,7 @@ static int rc_parse_operand_term(rc_operand_t* self, const char** memaddr, lua_S break; case 'v': case 'V': - value = (unsigned)strtoul(++aux, &end, 10); + value = strtoul(++aux, &end, 10); if (end == aux) { return RC_INVALID_CONST_OPERAND; From 6e730cf2ddf3c2839a37d27fd2669617aa26cdbd Mon Sep 17 00:00:00 2001 From: meleu Date: Sat, 30 Mar 2019 15:44:03 -0300 Subject: [PATCH 7/9] update rcheevos files --- Makefile.common | 2 + deps/rcheevos/include/rcheevos.h | 93 ++++++---- deps/rcheevos/src/rcheevos/alloc.c | 30 +++- deps/rcheevos/src/rcheevos/condition.c | 20 +-- deps/rcheevos/src/rcheevos/condset.c | 18 +- deps/rcheevos/src/rcheevos/expression.c | 8 +- deps/rcheevos/src/rcheevos/internal.h | 78 +++++--- deps/rcheevos/src/rcheevos/lboard.c | 79 +++++---- deps/rcheevos/src/rcheevos/memref.c | 204 +++++++++++++++++++++ deps/rcheevos/src/rcheevos/operand.c | 206 ++++++---------------- deps/rcheevos/src/rcheevos/richpresence.c | 108 +++++++----- deps/rcheevos/src/rcheevos/term.c | 61 ++++--- deps/rcheevos/src/rcheevos/trigger.c | 40 +++-- deps/rcheevos/src/rcheevos/value.c | 36 ++-- griffin/griffin.c | 2 + 15 files changed, 616 insertions(+), 369 deletions(-) create mode 100644 deps/rcheevos/src/rcheevos/memref.c diff --git a/Makefile.common b/Makefile.common index 0b487d01b0..c35f06a369 100644 --- a/Makefile.common +++ b/Makefile.common @@ -1709,6 +1709,8 @@ ifeq ($(HAVE_NETWORKING), 1) deps/rcheevos/src/rcheevos/lboard.o \ deps/rcheevos/src/rcheevos/alloc.o \ deps/rcheevos/src/rcheevos/format.o \ + deps/rcheevos/src/rcheevos/memref.o \ + deps/rcheevos/src/rcheevos/richpresence.o \ deps/rcheevos/src/rurl/url.o ifeq ($(HAVE_LUA), 1) diff --git a/deps/rcheevos/include/rcheevos.h b/deps/rcheevos/include/rcheevos.h index 898ed9845d..c15f72596e 100644 --- a/deps/rcheevos/include/rcheevos.h +++ b/deps/rcheevos/include/rcheevos.h @@ -30,7 +30,8 @@ enum { RC_MISSING_SUBMIT = -15, RC_MISSING_VALUE = -16, RC_INVALID_LBOARD_FIELD = -17, - RC_MISSING_DISPLAY_STRING = -18 + RC_MISSING_DISPLAY_STRING = -18, + RC_OUT_OF_MEMORY = -19 }; /*****************************************************************************\ @@ -83,27 +84,57 @@ enum { typedef unsigned (*rc_peek_t)(unsigned address, unsigned num_bytes, void* ud); /*****************************************************************************\ -| Operands | +| Memory References | \*****************************************************************************/ /* Sizes. */ enum { - RC_OPERAND_BIT_0, - RC_OPERAND_BIT_1, - RC_OPERAND_BIT_2, - RC_OPERAND_BIT_3, - RC_OPERAND_BIT_4, - RC_OPERAND_BIT_5, - RC_OPERAND_BIT_6, - RC_OPERAND_BIT_7, - RC_OPERAND_LOW, - RC_OPERAND_HIGH, - RC_OPERAND_8_BITS, - RC_OPERAND_16_BITS, - RC_OPERAND_24_BITS, - RC_OPERAND_32_BITS + RC_MEMSIZE_BIT_0, + RC_MEMSIZE_BIT_1, + RC_MEMSIZE_BIT_2, + RC_MEMSIZE_BIT_3, + RC_MEMSIZE_BIT_4, + RC_MEMSIZE_BIT_5, + RC_MEMSIZE_BIT_6, + RC_MEMSIZE_BIT_7, + RC_MEMSIZE_LOW, + RC_MEMSIZE_HIGH, + RC_MEMSIZE_8_BITS, + RC_MEMSIZE_16_BITS, + RC_MEMSIZE_24_BITS, + RC_MEMSIZE_32_BITS }; +typedef struct { + /* The memory address of this variable. */ + unsigned address; + /* The size of the variable. */ + char size; + /* True if the value is in BCD. */ + char is_bcd; +} rc_memref_t; + +typedef struct rc_memref_value_t rc_memref_value_t; + +struct rc_memref_value_t { + /* The value of this memory reference. */ + unsigned value; + /* The previous value of this memory reference. */ + unsigned previous; + /* The last differing value of this memory reference. */ + unsigned prior; + + /* The referenced memory */ + rc_memref_t memref; + + /* The next memory reference in the chain */ + rc_memref_value_t* next; +}; + +/*****************************************************************************\ +| Operands | +\*****************************************************************************/ + /* types */ enum { RC_OPERAND_ADDRESS, /* Compare to the value of a live address in RAM. */ @@ -117,20 +148,10 @@ enum { typedef struct { union { /* A value read from memory. */ - struct { - /* The memory address or constant value of this variable. */ - unsigned value; - /* The previous memory contents if RC_OPERAND_DELTA or RC_OPERAND_PRIOR. */ - unsigned previous; - /* The last differing value if RC_OPERAND_PRIOR. */ - unsigned prior; + rc_memref_value_t* memref; - /* The size of the variable. */ - char size; - /* True if the value is in BCD. */ - char is_bcd; - /* The type of the variable. */ - }; + /* A value. */ + unsigned value; /* A floating point value. */ double fp_value; @@ -171,9 +192,6 @@ enum { typedef struct rc_condition_t rc_condition_t; struct rc_condition_t { - /* The next condition in the chain. */ - rc_condition_t* next; - /* The condition's operands. */ rc_operand_t operand1; rc_operand_t operand2; @@ -183,6 +201,9 @@ struct rc_condition_t { /* Number of hits so far. */ unsigned current_hits; + /* The next condition in the chain. */ + rc_condition_t* next; + /** * Set if the condition needs to processed as part of the "check if paused" * pass @@ -222,6 +243,9 @@ typedef struct { /* The list of sub condition sets in this test. */ rc_condset_t* alternative; + + /* The memory references required by the trigger. */ + rc_memref_value_t* memrefs; } rc_trigger_t; @@ -262,6 +286,9 @@ struct rc_expression_t { typedef struct { /* The list of expression to evaluate. */ rc_expression_t* expressions; + + /* The memory references required by the value. */ + rc_memref_value_t* memrefs; } rc_value_t; @@ -288,6 +315,7 @@ typedef struct { rc_trigger_t cancel; rc_value_t value; rc_value_t* progress; + rc_memref_value_t* memrefs; char started; char submitted; @@ -358,6 +386,7 @@ struct rc_richpresence_display_t { typedef struct { rc_richpresence_display_t* first_display; rc_richpresence_lookup_t* first_lookup; + rc_memref_value_t* memrefs; } rc_richpresence_t; diff --git a/deps/rcheevos/src/rcheevos/alloc.c b/deps/rcheevos/src/rcheevos/alloc.c index 09da6e6524..83b9ec71ef 100644 --- a/deps/rcheevos/src/rcheevos/alloc.c +++ b/deps/rcheevos/src/rcheevos/alloc.c @@ -1,6 +1,7 @@ #include "internal.h" -#include +#include +#include void* rc_alloc(void* pointer, int* offset, int size, int alignment, rc_scratch_t* scratch) { void* ptr; @@ -10,18 +11,21 @@ void* rc_alloc(void* pointer, int* offset, int size, int alignment, rc_scratch_t if (pointer != 0) { ptr = (void*)((char*)pointer + *offset); } + else if (scratch != 0) { + ptr = &scratch->obj; + } else { - ptr = scratch; + ptr = 0; } *offset += size; return ptr; } -char* rc_alloc_str(void* pointer, int* offset, const char* text, int length) { +char* rc_alloc_str(rc_parse_state_t* parse, const char* text, int length) { char* ptr; - ptr = (char*)rc_alloc(pointer, offset, length + 1, RC_ALIGNOF(char), 0); + ptr = (char*)rc_alloc(parse->buffer, &parse->offset, length + 1, RC_ALIGNOF(char), 0); if (ptr) { memcpy(ptr, text, length); ptr[length] = '\0'; @@ -29,3 +33,21 @@ char* rc_alloc_str(void* pointer, int* offset, const char* text, int length) { return ptr; } + +void rc_init_parse_state(rc_parse_state_t* parse, void* buffer, lua_State* L, int funcs_ndx) +{ + parse->offset = 0; + parse->L = L; + parse->funcs_ndx = funcs_ndx; + parse->buffer = buffer; + parse->scratch.memref = parse->scratch.memref_buffer; + parse->scratch.memref_size = sizeof(parse->scratch.memref_buffer) / sizeof(parse->scratch.memref_buffer[0]); + parse->scratch.memref_count = 0; + parse->first_memref = 0; +} + +void rc_destroy_parse_state(rc_parse_state_t* parse) +{ + if (parse->scratch.memref != parse->scratch.memref_buffer) + free(parse->scratch.memref); +} \ No newline at end of file diff --git a/deps/rcheevos/src/rcheevos/condition.c b/deps/rcheevos/src/rcheevos/condition.c index d97cb9db59..efd172a6d2 100644 --- a/deps/rcheevos/src/rcheevos/condition.c +++ b/deps/rcheevos/src/rcheevos/condition.c @@ -2,13 +2,13 @@ #include -rc_condition_t* rc_parse_condition(int* ret, void* buffer, rc_scratch_t* scratch, const char** memaddr, lua_State* L, int funcs_ndx) { +rc_condition_t* rc_parse_condition(const char** memaddr, rc_parse_state_t* parse) { rc_condition_t* self; const char* aux; int ret2; aux = *memaddr; - self = RC_ALLOC(rc_condition_t, buffer, ret, scratch); + self = RC_ALLOC(rc_condition_t, parse); self->current_hits = 0; if (*aux != 0 && aux[1] == ':') { @@ -19,7 +19,7 @@ rc_condition_t* rc_parse_condition(int* ret, void* buffer, rc_scratch_t* scratch case 'b': case 'B': self->type = RC_CONDITION_SUB_SOURCE; break; case 'c': case 'C': self->type = RC_CONDITION_ADD_HITS; break; case 'n': case 'N': self->type = RC_CONDITION_AND_NEXT; break; - default: *ret = RC_INVALID_CONDITION_TYPE; return 0; + default: parse->offset = RC_INVALID_CONDITION_TYPE; return 0; } aux += 2; @@ -28,10 +28,10 @@ rc_condition_t* rc_parse_condition(int* ret, void* buffer, rc_scratch_t* scratch self->type = RC_CONDITION_STANDARD; } - ret2 = rc_parse_operand(&self->operand1, &aux, 1, L, funcs_ndx); + ret2 = rc_parse_operand(&self->operand1, &aux, 1, parse); if (ret2 < 0) { - *ret = ret2; + parse->offset = ret2; return 0; } @@ -45,7 +45,7 @@ rc_condition_t* rc_parse_condition(int* ret, void* buffer, rc_scratch_t* scratch if (*aux++ != '=') { /* fall through */ default: - *ret = RC_INVALID_OPERATOR; + parse->offset = RC_INVALID_OPERATOR; return 0; } @@ -73,10 +73,10 @@ rc_condition_t* rc_parse_condition(int* ret, void* buffer, rc_scratch_t* scratch break; } - ret2 = rc_parse_operand(&self->operand2, &aux, 1, L, funcs_ndx); + ret2 = rc_parse_operand(&self->operand2, &aux, 1, parse); if (ret2 < 0) { - *ret = ret2; + parse->offset = ret2; return 0; } @@ -85,7 +85,7 @@ rc_condition_t* rc_parse_condition(int* ret, void* buffer, rc_scratch_t* scratch self->required_hits = (unsigned)strtoul(++aux, &end, 10); if (end == aux || *end != ')') { - *ret = RC_INVALID_REQUIRED_HITS; + parse->offset = RC_INVALID_REQUIRED_HITS; return 0; } @@ -96,7 +96,7 @@ rc_condition_t* rc_parse_condition(int* ret, void* buffer, rc_scratch_t* scratch self->required_hits = (unsigned)strtoul(++aux, &end, 10); if (end == aux || *end != '.') { - *ret = RC_INVALID_REQUIRED_HITS; + parse->offset = RC_INVALID_REQUIRED_HITS; return 0; } diff --git a/deps/rcheevos/src/rcheevos/condset.c b/deps/rcheevos/src/rcheevos/condset.c index 13d086f937..c2d59a2691 100644 --- a/deps/rcheevos/src/rcheevos/condset.c +++ b/deps/rcheevos/src/rcheevos/condset.c @@ -23,19 +23,25 @@ static void rc_update_condition_pause(rc_condition_t* condition, int* in_pause) } } -rc_condset_t* rc_parse_condset(int* ret, void* buffer, rc_scratch_t* scratch, const char** memaddr, lua_State* L, int funcs_ndx) { +rc_condset_t* rc_parse_condset(const char** memaddr, rc_parse_state_t* parse) { rc_condset_t* self; rc_condition_t** next; int in_pause; - self = RC_ALLOC(rc_condset_t, buffer, ret, scratch); + self = RC_ALLOC(rc_condset_t, parse); self->has_pause = 0; next = &self->conditions; - for (;;) { - *next = rc_parse_condition(ret, buffer, scratch, memaddr, L, funcs_ndx); + if (**memaddr == 'S' || **memaddr == 's' || !**memaddr) { + /* empty group - editor allows it, so we have to support it */ + *next = 0; + return self; + } - if (*ret < 0) { + for (;;) { + *next = rc_parse_condition(memaddr, parse); + + if (parse->offset < 0) { return 0; } @@ -52,7 +58,7 @@ rc_condset_t* rc_parse_condset(int* ret, void* buffer, rc_scratch_t* scratch, co *next = 0; - if (buffer != 0) { + if (parse->buffer != 0) { in_pause = 0; rc_update_condition_pause(self->conditions, &in_pause); } diff --git a/deps/rcheevos/src/rcheevos/expression.c b/deps/rcheevos/src/rcheevos/expression.c index 87e458741a..f2fca1e863 100644 --- a/deps/rcheevos/src/rcheevos/expression.c +++ b/deps/rcheevos/src/rcheevos/expression.c @@ -1,16 +1,16 @@ #include "internal.h" -rc_expression_t* rc_parse_expression(int* ret, void* buffer, rc_scratch_t* scratch, const char** memaddr, lua_State* L, int funcs_ndx) { +rc_expression_t* rc_parse_expression(const char** memaddr, rc_parse_state_t* parse) { rc_expression_t* self; rc_term_t** next; - self = RC_ALLOC(rc_expression_t, buffer, ret, scratch); + self = RC_ALLOC(rc_expression_t, parse); next = &self->terms; for (;;) { - *next = rc_parse_term(ret, buffer, scratch, memaddr, L, funcs_ndx); + *next = rc_parse_term(memaddr, parse); - if (*ret < 0) { + if (parse->offset < 0) { return 0; } diff --git a/deps/rcheevos/src/rcheevos/internal.h b/deps/rcheevos/src/rcheevos/internal.h index 5968aafe6e..abdb398371 100644 --- a/deps/rcheevos/src/rcheevos/internal.h +++ b/deps/rcheevos/src/rcheevos/internal.h @@ -8,50 +8,78 @@ #define RC_OFFSETOF(s, f) ((int)(long long)(&((s*)0)->f)) #define RC_ALIGNOF(t) RC_OFFSETOF(struct RC_TAG(_unnamed, __LINE__) {char c; t d;}, d) -#define RC_ALLOC(t, p, o, s) ((t*)rc_alloc(p, o, sizeof(t), RC_ALIGNOF(t), s)) +#define RC_ALLOC(t, p) ((t*)rc_alloc((p)->buffer, &(p)->offset, sizeof(t), RC_ALIGNOF(t), &(p)->scratch)) -typedef union { - rc_operand_t operand; - rc_condition_t condition; - rc_condset_t condset; - rc_trigger_t trigger; - rc_term_t term; - rc_expression_t expression; - rc_lboard_t lboard; - rc_richpresence_t richpresence; - rc_richpresence_display_t richpresence_display; - rc_richpresence_display_part_t richpresence_part; - rc_richpresence_lookup_t richpresence_lookup; - rc_richpresence_lookup_item_t richpresence_lookup_item; +typedef struct { + rc_memref_t memref_buffer[16]; + rc_memref_t *memref; + int memref_count; + int memref_size; + + union + { + rc_operand_t operand; + rc_condition_t condition; + rc_condset_t condset; + rc_trigger_t trigger; + rc_term_t term; + rc_expression_t expression; + rc_lboard_t lboard; + rc_memref_value_t memref_value; + rc_richpresence_t richpresence; + rc_richpresence_display_t richpresence_display; + rc_richpresence_display_part_t richpresence_part; + rc_richpresence_lookup_t richpresence_lookup; + rc_richpresence_lookup_item_t richpresence_lookup_item; + } obj; } rc_scratch_t; +typedef struct { + int offset; + + lua_State* L; + int funcs_ndx; + + void* buffer; + rc_scratch_t scratch; + + rc_memref_value_t** first_memref; +} +rc_parse_state_t; + +void rc_init_parse_state(rc_parse_state_t* parse, void* buffer, lua_State* L, int funcs_ndx); +void rc_init_parse_state_memrefs(rc_parse_state_t* parse, rc_memref_value_t** memrefs); +void rc_destroy_parse_state(rc_parse_state_t* parse); + void* rc_alloc(void* pointer, int* offset, int size, int alignment, rc_scratch_t* scratch); -char* rc_alloc_str(void* pointer, int* offset, const char* text, int length); +char* rc_alloc_str(rc_parse_state_t* parse, const char* text, int length); -void rc_parse_trigger_internal(rc_trigger_t* self, int* ret, void* buffer, rc_scratch_t* scratch, const char** memaddr, lua_State* L, int funcs_ndx); +rc_memref_value_t* rc_alloc_memref_value(rc_parse_state_t* parse, unsigned address, char size, char is_bcd); +void rc_update_memref_values(rc_memref_value_t* memref, rc_peek_t peek, void* ud); -rc_condset_t* rc_parse_condset(int* ret, void* buffer, rc_scratch_t* scratch, const char** memaddr, lua_State* L, int funcs_ndx); +void rc_parse_trigger_internal(rc_trigger_t* self, const char** memaddr, rc_parse_state_t* parse); + +rc_condset_t* rc_parse_condset(const char** memaddr, rc_parse_state_t* parse); int rc_test_condset(rc_condset_t* self, int* reset, rc_peek_t peek, void* ud, lua_State* L); void rc_reset_condset(rc_condset_t* self); -rc_condition_t* rc_parse_condition(int* ret, void* buffer, rc_scratch_t* scratch, const char** memaddr, lua_State* L, int funcs_ndx); +rc_condition_t* rc_parse_condition(const char** memaddr, rc_parse_state_t* parse); int rc_test_condition(rc_condition_t* self, unsigned add_buffer, rc_peek_t peek, void* ud, lua_State* L); -int rc_parse_operand(rc_operand_t* self, const char** memaddr, int is_trigger, lua_State* L, int funcs_ndx); +int rc_parse_operand(rc_operand_t* self, const char** memaddr, int is_trigger, rc_parse_state_t* parse); unsigned rc_evaluate_operand(rc_operand_t* self, rc_peek_t peek, void* ud, lua_State* L); -rc_term_t* rc_parse_term(int* ret, void* buffer, rc_scratch_t* scratch, const char** memaddr, lua_State* L, int funcs_ndx); +rc_term_t* rc_parse_term(const char** memaddr, rc_parse_state_t* parse); unsigned rc_evaluate_term(rc_term_t* self, rc_peek_t peek, void* ud, lua_State* L); -rc_expression_t* rc_parse_expression(int* ret, void* buffer, rc_scratch_t* scratch, const char** memaddr, lua_State* L, int funcs_ndx); +rc_expression_t* rc_parse_expression(const char** memaddr, rc_parse_state_t* parse); unsigned rc_evaluate_expression(rc_expression_t* self, rc_peek_t peek, void* ud, lua_State* L); -void rc_parse_value_internal(rc_value_t* self, int* ret, void* buffer, void* scratch, const char** memaddr, lua_State* L, int funcs_ndx); +void rc_parse_value_internal(rc_value_t* self, const char** memaddr, rc_parse_state_t* parse); -void rc_parse_lboard_internal(rc_lboard_t* self, int* ret, void* buffer, void* scratch, const char* memaddr, lua_State* L, int funcs_ndx); +void rc_parse_lboard_internal(rc_lboard_t* self, const char* memaddr, rc_parse_state_t* parse); -const char* rc_parse_line(const char* line, const char** end); -void rc_parse_richpresence_internal(rc_richpresence_t* self, int* ret, void* buffer, void* scratch, const char* script, lua_State* L, int funcs_ndx); +void rc_parse_richpresence_internal(rc_richpresence_t* self, const char* script, rc_parse_state_t* parse); #endif /* INTERNAL_H */ diff --git a/deps/rcheevos/src/rcheevos/lboard.c b/deps/rcheevos/src/rcheevos/lboard.c index 56b216cd7f..a0e8334d38 100644 --- a/deps/rcheevos/src/rcheevos/lboard.c +++ b/deps/rcheevos/src/rcheevos/lboard.c @@ -9,7 +9,7 @@ enum { RC_LBOARD_COMPLETE = RC_LBOARD_START | RC_LBOARD_CANCEL | RC_LBOARD_SUBMIT | RC_LBOARD_VALUE }; -void rc_parse_lboard_internal(rc_lboard_t* self, int* ret, void* buffer, void* scratch, const char* memaddr, lua_State* L, int funcs_ndx) { +void rc_parse_lboard_internal(rc_lboard_t* self, const char* memaddr, rc_parse_state_t* parse) { int found; self->progress = 0; @@ -21,15 +21,16 @@ void rc_parse_lboard_internal(rc_lboard_t* self, int* ret, void* buffer, void* s (memaddr[1] == 't' || memaddr[1] == 'T') && (memaddr[2] == 'a' || memaddr[2] == 'A') && memaddr[3] == ':') { if ((found & RC_LBOARD_START) != 0) { - *ret = RC_DUPLICATED_START; + parse->offset = RC_DUPLICATED_START; return; } found |= RC_LBOARD_START; memaddr += 4; - rc_parse_trigger_internal(&self->start, ret, buffer, scratch, &memaddr, L, funcs_ndx); + rc_parse_trigger_internal(&self->start, &memaddr, parse); + self->start.memrefs = 0; - if (*ret < 0) { + if (parse->offset < 0) { return; } } @@ -37,15 +38,16 @@ void rc_parse_lboard_internal(rc_lboard_t* self, int* ret, void* buffer, void* s (memaddr[1] == 'a' || memaddr[1] == 'A') && (memaddr[2] == 'n' || memaddr[2] == 'N') && memaddr[3] == ':') { if ((found & RC_LBOARD_CANCEL) != 0) { - *ret = RC_DUPLICATED_CANCEL; + parse->offset = RC_DUPLICATED_CANCEL; return; } found |= RC_LBOARD_CANCEL; memaddr += 4; - rc_parse_trigger_internal(&self->cancel, ret, buffer, scratch, &memaddr, L, funcs_ndx); + rc_parse_trigger_internal(&self->cancel, &memaddr, parse); + self->cancel.memrefs = 0; - if (*ret < 0) { + if (parse->offset < 0) { return; } } @@ -53,15 +55,16 @@ void rc_parse_lboard_internal(rc_lboard_t* self, int* ret, void* buffer, void* s (memaddr[1] == 'u' || memaddr[1] == 'U') && (memaddr[2] == 'b' || memaddr[2] == 'B') && memaddr[3] == ':') { if ((found & RC_LBOARD_SUBMIT) != 0) { - *ret = RC_DUPLICATED_SUBMIT; + parse->offset = RC_DUPLICATED_SUBMIT; return; } found |= RC_LBOARD_SUBMIT; memaddr += 4; - rc_parse_trigger_internal(&self->submit, ret, buffer, scratch, &memaddr, L, funcs_ndx); + rc_parse_trigger_internal(&self->submit, &memaddr, parse); + self->submit.memrefs = 0; - if (*ret < 0) { + if (parse->offset < 0) { return; } } @@ -69,15 +72,16 @@ void rc_parse_lboard_internal(rc_lboard_t* self, int* ret, void* buffer, void* s (memaddr[1] == 'a' || memaddr[1] == 'A') && (memaddr[2] == 'l' || memaddr[2] == 'L') && memaddr[3] == ':') { if ((found & RC_LBOARD_VALUE) != 0) { - *ret = RC_DUPLICATED_VALUE; + parse->offset = RC_DUPLICATED_VALUE; return; } found |= RC_LBOARD_VALUE; memaddr += 4; - rc_parse_value_internal(&self->value, ret, buffer, scratch, &memaddr, L, funcs_ndx); + rc_parse_value_internal(&self->value, &memaddr, parse); + self->value.memrefs = 0; - if (*ret < 0) { + if (parse->offset < 0) { return; } } @@ -85,22 +89,23 @@ void rc_parse_lboard_internal(rc_lboard_t* self, int* ret, void* buffer, void* s (memaddr[1] == 'r' || memaddr[1] == 'R') && (memaddr[2] == 'o' || memaddr[2] == 'O') && memaddr[3] == ':') { if ((found & RC_LBOARD_PROGRESS) != 0) { - *ret = RC_DUPLICATED_PROGRESS; + parse->offset = RC_DUPLICATED_PROGRESS; return; } found |= RC_LBOARD_PROGRESS; memaddr += 4; - self->progress = RC_ALLOC(rc_value_t, buffer, ret, scratch); - rc_parse_value_internal(self->progress, ret, buffer, scratch, &memaddr, L, funcs_ndx); + self->progress = RC_ALLOC(rc_value_t, parse); + rc_parse_value_internal(self->progress, &memaddr, parse); + self->progress->memrefs = 0; - if (*ret < 0) { + if (parse->offset < 0) { return; } } else { - *ret = RC_INVALID_LBOARD_FIELD; + parse->offset = RC_INVALID_LBOARD_FIELD; return; } @@ -113,16 +118,16 @@ void rc_parse_lboard_internal(rc_lboard_t* self, int* ret, void* buffer, void* s if ((found & RC_LBOARD_COMPLETE) != RC_LBOARD_COMPLETE) { if ((found & RC_LBOARD_START) == 0) { - *ret = RC_MISSING_START; + parse->offset = RC_MISSING_START; } else if ((found & RC_LBOARD_CANCEL) == 0) { - *ret = RC_MISSING_CANCEL; + parse->offset = RC_MISSING_CANCEL; } else if ((found & RC_LBOARD_SUBMIT) == 0) { - *ret = RC_MISSING_SUBMIT; + parse->offset = RC_MISSING_SUBMIT; } else if ((found & RC_LBOARD_VALUE) == 0) { - *ret = RC_MISSING_VALUE; + parse->offset = RC_MISSING_VALUE; } return; @@ -132,31 +137,37 @@ void rc_parse_lboard_internal(rc_lboard_t* self, int* ret, void* buffer, void* s } int rc_lboard_size(const char* memaddr) { - int ret; rc_lboard_t* self; - rc_scratch_t scratch; + rc_parse_state_t parse; + rc_init_parse_state(&parse, 0, 0, 0); - ret = 0; - self = RC_ALLOC(rc_lboard_t, 0, &ret, &scratch); - rc_parse_lboard_internal(self, &ret, 0, &scratch, memaddr, 0, 0); - return ret; + self = RC_ALLOC(rc_lboard_t, &parse); + rc_parse_lboard_internal(self, memaddr, &parse); + + rc_destroy_parse_state(&parse); + return parse.offset; } rc_lboard_t* rc_parse_lboard(void* buffer, const char* memaddr, lua_State* L, int funcs_ndx) { - int ret; rc_lboard_t* self; - rc_scratch_t scratch; + rc_parse_state_t parse; + rc_init_parse_state(&parse, buffer, L, funcs_ndx); - ret = 0; - self = RC_ALLOC(rc_lboard_t, buffer, &ret, &scratch); - rc_parse_lboard_internal(self, &ret, buffer, 0, memaddr, L, funcs_ndx); - return ret >= 0 ? self : 0; + self = RC_ALLOC(rc_lboard_t, &parse); + rc_init_parse_state_memrefs(&parse, &self->memrefs); + + rc_parse_lboard_internal(self, memaddr, &parse); + + rc_destroy_parse_state(&parse); + return parse.offset >= 0 ? self : 0; } int rc_evaluate_lboard(rc_lboard_t* self, unsigned* value, rc_peek_t peek, void* peek_ud, lua_State* L) { int start_ok, cancel_ok, submit_ok; int action = -1; + rc_update_memref_values(self->memrefs, peek, peek_ud); + /* ASSERT: these are always tested once every frame, to ensure delta variables work properly */ start_ok = rc_test_trigger(&self->start, peek, peek_ud, L); cancel_ok = rc_test_trigger(&self->cancel, peek, peek_ud, L); diff --git a/deps/rcheevos/src/rcheevos/memref.c b/deps/rcheevos/src/rcheevos/memref.c new file mode 100644 index 0000000000..b4565bb679 --- /dev/null +++ b/deps/rcheevos/src/rcheevos/memref.c @@ -0,0 +1,204 @@ +#include "internal.h" + +#include /* malloc/realloc */ +#include /* memcpy */ + +rc_memref_value_t* rc_alloc_memref_value(rc_parse_state_t* parse, unsigned address, char size, char is_bcd) { + rc_memref_value_t** next_memref_value; + rc_memref_value_t* memref_value; + rc_memref_t* memref; + int i; + + if (!parse->first_memref) { + /* sizing mode - have to track unique address/size/bcd combinations */ + for (i = 0; i < parse->scratch.memref_count; ++i) { + memref = &parse->scratch.memref[i]; + if (memref->address == address && memref->size == size && memref->is_bcd == is_bcd) { + return &parse->scratch.obj.memref_value; + } + } + + /* resize unique tracking buffer if necessary */ + if (parse->scratch.memref_count == parse->scratch.memref_size) { + if (parse->scratch.memref == parse->scratch.memref_buffer) { + parse->scratch.memref_size += 16; + memref = malloc(parse->scratch.memref_size * sizeof(parse->scratch.memref_buffer[0])); + if (memref) { + parse->scratch.memref = memref; + memcpy(memref, parse->scratch.memref_buffer, parse->scratch.memref_count * sizeof(parse->scratch.memref_buffer[0])); + } + else { + parse->offset = RC_OUT_OF_MEMORY; + return 0; + } + } + else { + parse->scratch.memref_size += 32; + memref = realloc(parse->scratch.memref, parse->scratch.memref_size * sizeof(parse->scratch.memref_buffer[0])); + if (memref) { + parse->scratch.memref = memref; + } + else { + parse->offset = RC_OUT_OF_MEMORY; + return 0; + } + } + } + + /* add new unique tracking entry */ + if (parse->scratch.memref) { + memref = &parse->scratch.memref[parse->scratch.memref_count++]; + memref->address = address; + memref->size = size; + memref->is_bcd = is_bcd; + } + + /* allocate memory but don't actually populate, as it might overwrite the self object referencing the rc_memref_value_t */ + return RC_ALLOC(rc_memref_value_t, parse); + } + + /* construction mode - find or create the appropriate rc_memref_value_t */ + next_memref_value = parse->first_memref; + while (*next_memref_value) { + memref_value = *next_memref_value; + if (memref_value->memref.address == address && memref_value->memref.size == size && memref_value->memref.is_bcd == is_bcd) { + return memref_value; + } + + next_memref_value = &memref_value->next; + } + + memref_value = RC_ALLOC(rc_memref_value_t, parse); + memref_value->memref.address = address; + memref_value->memref.size = size; + memref_value->memref.is_bcd = is_bcd; + memref_value->value = 0; + memref_value->previous = 0; + memref_value->prior = 0; + memref_value->next = 0; + + *next_memref_value = memref_value; + + return memref_value; +} + +static unsigned rc_memref_get_value(rc_memref_t* self, rc_peek_t peek, void* ud) { + unsigned value; + + switch (self->size) + { + case RC_MEMSIZE_BIT_0: + value = (peek(self->address, 1, ud) >> 0) & 1; + break; + + case RC_MEMSIZE_BIT_1: + value = (peek(self->address, 1, ud) >> 1) & 1; + break; + + case RC_MEMSIZE_BIT_2: + value = (peek(self->address, 1, ud) >> 2) & 1; + break; + + case RC_MEMSIZE_BIT_3: + value = (peek(self->address, 1, ud) >> 3) & 1; + break; + + case RC_MEMSIZE_BIT_4: + value = (peek(self->address, 1, ud) >> 4) & 1; + break; + + case RC_MEMSIZE_BIT_5: + value = (peek(self->address, 1, ud) >> 5) & 1; + break; + + case RC_MEMSIZE_BIT_6: + value = (peek(self->address, 1, ud) >> 6) & 1; + break; + + case RC_MEMSIZE_BIT_7: + value = (peek(self->address, 1, ud) >> 7) & 1; + break; + + case RC_MEMSIZE_LOW: + value = peek(self->address, 1, ud) & 0x0f; + break; + + case RC_MEMSIZE_HIGH: + value = (peek(self->address, 1, ud) >> 4) & 0x0f; + break; + + case RC_MEMSIZE_8_BITS: + value = peek(self->address, 1, ud); + + if (self->is_bcd) { + value = ((value >> 4) & 0x0f) * 10 + (value & 0x0f); + } + + break; + + case RC_MEMSIZE_16_BITS: + value = peek(self->address, 2, ud); + + if (self->is_bcd) { + value = ((value >> 12) & 0x0f) * 1000 + + ((value >> 8) & 0x0f) * 100 + + ((value >> 4) & 0x0f) * 10 + + ((value >> 0) & 0x0f) * 1; + } + + break; + + case RC_MEMSIZE_24_BITS: + value = peek(self->address, 4, ud); + + if (self->is_bcd) { + value = ((value >> 20) & 0x0f) * 100000 + + ((value >> 16) & 0x0f) * 10000 + + ((value >> 12) & 0x0f) * 1000 + + ((value >> 8) & 0x0f) * 100 + + ((value >> 4) & 0x0f) * 10 + + ((value >> 0) & 0x0f) * 1; + } + + break; + + case RC_MEMSIZE_32_BITS: + value = peek(self->address, 4, ud); + + if (self->is_bcd) { + value = ((value >> 28) & 0x0f) * 10000000 + + ((value >> 24) & 0x0f) * 1000000 + + ((value >> 20) & 0x0f) * 100000 + + ((value >> 16) & 0x0f) * 10000 + + ((value >> 12) & 0x0f) * 1000 + + ((value >> 8) & 0x0f) * 100 + + ((value >> 4) & 0x0f) * 10 + + ((value >> 0) & 0x0f) * 1; + } + + break; + + default: + value = 0; + break; + } + + return value; +} + +void rc_update_memref_values(rc_memref_value_t* memref, rc_peek_t peek, void* ud) { + while (memref) { + memref->previous = memref->value; + memref->value = rc_memref_get_value(&memref->memref, peek, ud); + if (memref->value != memref->previous) + memref->prior = memref->previous; + + memref = memref->next; + } +} + +void rc_init_parse_state_memrefs(rc_parse_state_t* parse, rc_memref_value_t** memrefs) +{ + parse->first_memref = memrefs; + *memrefs = 0; +} diff --git a/deps/rcheevos/src/rcheevos/operand.c b/deps/rcheevos/src/rcheevos/operand.c index 4843641f5a..85502fbd1f 100644 --- a/deps/rcheevos/src/rcheevos/operand.c +++ b/deps/rcheevos/src/rcheevos/operand.c @@ -2,6 +2,7 @@ #include #include +#include #ifndef RC_DISABLE_LUA @@ -18,7 +19,7 @@ extern "C" { #endif /* RC_DISABLE_LUA */ -static int rc_parse_operand_lua(rc_operand_t* self, const char** memaddr, lua_State* L, int funcs_ndx) { +static int rc_parse_operand_lua(rc_operand_t* self, const char** memaddr, rc_parse_state_t* parse) { const char* aux = *memaddr; const char* id; @@ -38,20 +39,20 @@ static int rc_parse_operand_lua(rc_operand_t* self, const char** memaddr, lua_St #ifndef RC_DISABLE_LUA - if (L != 0) { - if (!lua_istable(L, funcs_ndx)) { + if (parse->L != 0) { + if (!lua_istable(parse->L, parse->funcs_ndx)) { return RC_INVALID_LUA_OPERAND; } - lua_pushlstring(L, id, aux - id); - lua_gettable(L, funcs_ndx); + lua_pushlstring(parse->L, id, aux - id); + lua_gettable(parse->L, parse->funcs_ndx); - if (!lua_isfunction(L, -1)) { - lua_pop(L, 1); + if (!lua_isfunction(parse->L, -1)) { + lua_pop(parse->L, 1); return RC_INVALID_LUA_OPERAND; } - self->function_ref = luaL_ref(L, LUA_REGISTRYINDEX); + self->function_ref = luaL_ref(parse->L, LUA_REGISTRYINDEX); } #endif /* RC_DISABLE_LUA */ @@ -61,10 +62,12 @@ static int rc_parse_operand_lua(rc_operand_t* self, const char** memaddr, lua_St return RC_OK; } -static int rc_parse_operand_memory(rc_operand_t* self, const char** memaddr) { +static int rc_parse_operand_memory(rc_operand_t* self, const char** memaddr, rc_parse_state_t* parse) { const char* aux = *memaddr; char* end; - unsigned long value; + unsigned long address; + char is_bcd = 0; + char size; switch (*aux++) { case 'd': case 'D': @@ -73,7 +76,7 @@ static int rc_parse_operand_memory(rc_operand_t* self, const char** memaddr) { case 'b': case 'B': self->type = RC_OPERAND_ADDRESS; - self->is_bcd = 1; + is_bcd = 1; break; case 'p': case 'P': @@ -97,44 +100,46 @@ static int rc_parse_operand_memory(rc_operand_t* self, const char** memaddr) { aux++; switch (*aux++) { - case 'm': case 'M': self->size = RC_OPERAND_BIT_0; break; - case 'n': case 'N': self->size = RC_OPERAND_BIT_1; break; - case 'o': case 'O': self->size = RC_OPERAND_BIT_2; break; - case 'p': case 'P': self->size = RC_OPERAND_BIT_3; break; - case 'q': case 'Q': self->size = RC_OPERAND_BIT_4; break; - case 'r': case 'R': self->size = RC_OPERAND_BIT_5; break; - case 's': case 'S': self->size = RC_OPERAND_BIT_6; break; - case 't': case 'T': self->size = RC_OPERAND_BIT_7; break; - case 'l': case 'L': self->size = RC_OPERAND_LOW; break; - case 'u': case 'U': self->size = RC_OPERAND_HIGH; break; - case 'h': case 'H': self->size = RC_OPERAND_8_BITS; break; - case 'w': case 'W': self->size = RC_OPERAND_24_BITS; break; - case 'x': case 'X': self->size = RC_OPERAND_32_BITS; break; + case 'm': case 'M': size = RC_MEMSIZE_BIT_0; break; + case 'n': case 'N': size = RC_MEMSIZE_BIT_1; break; + case 'o': case 'O': size = RC_MEMSIZE_BIT_2; break; + case 'p': case 'P': size = RC_MEMSIZE_BIT_3; break; + case 'q': case 'Q': size = RC_MEMSIZE_BIT_4; break; + case 'r': case 'R': size = RC_MEMSIZE_BIT_5; break; + case 's': case 'S': size = RC_MEMSIZE_BIT_6; break; + case 't': case 'T': size = RC_MEMSIZE_BIT_7; break; + case 'l': case 'L': size = RC_MEMSIZE_LOW; break; + case 'u': case 'U': size = RC_MEMSIZE_HIGH; break; + case 'h': case 'H': size = RC_MEMSIZE_8_BITS; break; + case 'w': case 'W': size = RC_MEMSIZE_24_BITS; break; + case 'x': case 'X': size = RC_MEMSIZE_32_BITS; break; default: /* fall through */ aux--; case ' ': - self->size = RC_OPERAND_16_BITS; + size = RC_MEMSIZE_16_BITS; break; } - value = strtoul(aux, &end, 16); + address = strtoul(aux, &end, 16); if (end == aux) { return RC_INVALID_MEMORY_OPERAND; } - if (value > 0xffffffffU) { - value = 0xffffffffU; + if (address > 0xffffffffU) { + address = 0xffffffffU; } - self->value = (unsigned)value; + self->memref = rc_alloc_memref_value(parse, address, size, is_bcd); + if (parse->offset < 0) + return parse->offset; *memaddr = end; return RC_OK; } -static int rc_parse_operand_trigger(rc_operand_t* self, const char** memaddr, lua_State* L, int funcs_ndx) { +static int rc_parse_operand_trigger(rc_operand_t* self, const char** memaddr, rc_parse_state_t* parse) { const char* aux = *memaddr; char* end; int ret; @@ -162,7 +167,7 @@ static int rc_parse_operand_trigger(rc_operand_t* self, const char** memaddr, lu if (aux[1] == 'x' || aux[1] == 'X') { /* fall through */ default: - ret = rc_parse_operand_memory(self, &aux); + ret = rc_parse_operand_memory(self, &aux, parse); if (ret < 0) { return ret; @@ -192,7 +197,7 @@ static int rc_parse_operand_trigger(rc_operand_t* self, const char** memaddr, lu break; case '@': - ret = rc_parse_operand_lua(self, &aux, L, funcs_ndx); + ret = rc_parse_operand_lua(self, &aux, parse); if (ret < 0) { return ret; @@ -205,7 +210,7 @@ static int rc_parse_operand_trigger(rc_operand_t* self, const char** memaddr, lu return RC_OK; } -static int rc_parse_operand_term(rc_operand_t* self, const char** memaddr, lua_State* L, int funcs_ndx) { +static int rc_parse_operand_term(rc_operand_t* self, const char** memaddr, rc_parse_state_t* parse) { const char* aux = *memaddr; char* end; int ret; @@ -250,7 +255,7 @@ static int rc_parse_operand_term(rc_operand_t* self, const char** memaddr, lua_S if (aux[1] == 'x' || aux[1] == 'X') { /* fall through */ default: - ret = rc_parse_operand_memory(self, &aux); + ret = rc_parse_operand_memory(self, &aux, parse); if (ret < 0) { return ret; @@ -264,18 +269,24 @@ static int rc_parse_operand_term(rc_operand_t* self, const char** memaddr, lua_S case '+': case '-': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': - self->type = RC_OPERAND_FP; self->fp_value = strtod(aux, &end); if (end == aux) { return RC_INVALID_FP_OPERAND; } + if (floor(self->fp_value) == self->fp_value) { + self->type = RC_OPERAND_CONST; + self->value = (unsigned)floor(self->fp_value); + } + else { + self->type = RC_OPERAND_FP; + } aux = end; break; case '@': - ret = rc_parse_operand_lua(self, &aux, L, funcs_ndx); + ret = rc_parse_operand_lua(self, &aux, parse); if (ret < 0) { return ret; @@ -288,17 +299,12 @@ static int rc_parse_operand_term(rc_operand_t* self, const char** memaddr, lua_S return RC_OK; } -int rc_parse_operand(rc_operand_t* self, const char** memaddr, int is_trigger, lua_State* L, int funcs_ndx) { - self->size = RC_OPERAND_8_BITS; - self->is_bcd = 0; - self->previous = 0; - self->prior = 0; - +int rc_parse_operand(rc_operand_t* self, const char** memaddr, int is_trigger, rc_parse_state_t* parse) { if (is_trigger) { - return rc_parse_operand_trigger(self, memaddr, L, funcs_ndx); + return rc_parse_operand_trigger(self, memaddr, parse); } else { - return rc_parse_operand_term(self, memaddr, L, funcs_ndx); + return rc_parse_operand_term(self, memaddr, parse); } } @@ -368,113 +374,15 @@ unsigned rc_evaluate_operand(rc_operand_t* self, rc_peek_t peek, void* ud, lua_S break; case RC_OPERAND_ADDRESS: + value = self->memref->value; + break; + case RC_OPERAND_DELTA: + value = self->memref->previous; + break; + case RC_OPERAND_PRIOR: - switch (self->size) { - case RC_OPERAND_BIT_0: - value = (peek(self->value, 1, ud) >> 0) & 1; - break; - - case RC_OPERAND_BIT_1: - value = (peek(self->value, 1, ud) >> 1) & 1; - break; - - case RC_OPERAND_BIT_2: - value = (peek(self->value, 1, ud) >> 2) & 1; - break; - - case RC_OPERAND_BIT_3: - value = (peek(self->value, 1, ud) >> 3) & 1; - break; - - case RC_OPERAND_BIT_4: - value = (peek(self->value, 1, ud) >> 4) & 1; - break; - - case RC_OPERAND_BIT_5: - value = (peek(self->value, 1, ud) >> 5 ) & 1; - break; - - case RC_OPERAND_BIT_6: - value = (peek(self->value, 1, ud) >> 6) & 1; - break; - - case RC_OPERAND_BIT_7: - value = (peek(self->value, 1, ud) >> 7) & 1; - break; - - case RC_OPERAND_LOW: - value = peek(self->value, 1, ud) & 0x0f; - break; - - case RC_OPERAND_HIGH: - value = (peek(self->value, 1, ud) >> 4) & 0x0f; - break; - - case RC_OPERAND_8_BITS: - value = peek(self->value, 1, ud); - - if (self->is_bcd) { - value = ((value >> 4) & 0x0f) * 10 + (value & 0x0f); - } - - break; - - case RC_OPERAND_16_BITS: - value = peek(self->value, 2, ud); - - if (self->is_bcd) { - value = ((value >> 12) & 0x0f) * 1000 - + ((value >> 8) & 0x0f) * 100 - + ((value >> 4) & 0x0f) * 10 - + ((value >> 0) & 0x0f) * 1; - } - - break; - - case RC_OPERAND_24_BITS: - value = peek(self->value, 4, ud); - - if (self->is_bcd) { - value = ((value >> 20) & 0x0f) * 100000 - + ((value >> 16) & 0x0f) * 10000 - + ((value >> 12) & 0x0f) * 1000 - + ((value >> 8) & 0x0f) * 100 - + ((value >> 4) & 0x0f) * 10 - + ((value >> 0) & 0x0f) * 1; - } - - break; - - case RC_OPERAND_32_BITS: - value = peek(self->value, 4, ud); - - if (self->is_bcd) { - value = ((value >> 28) & 0x0f) * 10000000 - + ((value >> 24) & 0x0f) * 1000000 - + ((value >> 20) & 0x0f) * 100000 - + ((value >> 16) & 0x0f) * 10000 - + ((value >> 12) & 0x0f) * 1000 - + ((value >> 8) & 0x0f) * 100 - + ((value >> 4) & 0x0f) * 10 - + ((value >> 0) & 0x0f) * 1; - } - - break; - } - - if (self->type == RC_OPERAND_DELTA) { - unsigned previous = self->previous; - self->previous = value; - value = previous; - } else if (self->type == RC_OPERAND_PRIOR) { - if (self->previous != value) { - self->prior = self->previous; - self->previous = value; - } - value = self->prior; - } - + value = self->memref->prior; break; } diff --git a/deps/rcheevos/src/rcheevos/richpresence.c b/deps/rcheevos/src/rcheevos/richpresence.c index 910e66afe9..85a7a51f57 100644 --- a/deps/rcheevos/src/rcheevos/richpresence.c +++ b/deps/rcheevos/src/rcheevos/richpresence.c @@ -11,7 +11,7 @@ enum { RC_FORMAT_LOOKUP = 102 }; -const char* rc_parse_line(const char* line, const char** end) { +static const char* rc_parse_line(const char* line, const char** end) { const char* nextline; const char* endline; @@ -42,7 +42,7 @@ const char* rc_parse_line(const char* line, const char** end) { return nextline; } -rc_richpresence_display_t* rc_parse_richpresence_display_internal(void* buffer, int* ret, rc_scratch_t* scratch, const char* line, const char* endline, lua_State* L, int funcs_ndx, rc_richpresence_t* richpresence) { +static rc_richpresence_display_t* rc_parse_richpresence_display_internal(const char* line, const char* endline, rc_parse_state_t* parse, rc_richpresence_t* richpresence) { rc_richpresence_display_t* self; rc_richpresence_display_part_t* part; rc_richpresence_display_part_t** next; @@ -55,7 +55,7 @@ rc_richpresence_display_t* rc_parse_richpresence_display_internal(void* buffer, return 0; { - self = RC_ALLOC(rc_richpresence_display_t, buffer, ret, scratch); + self = RC_ALLOC(rc_richpresence_display_t, parse); memset(self, 0, sizeof(rc_richpresence_display_t)); next = &self->display; } @@ -71,14 +71,14 @@ rc_richpresence_display_t* rc_parse_richpresence_display_internal(void* buffer, } if (ptr > line) { - part = RC_ALLOC(rc_richpresence_display_part_t, buffer, ret, scratch); + part = RC_ALLOC(rc_richpresence_display_part_t, parse); memset(part, 0, sizeof(rc_richpresence_display_part_t)); *next = part; next = &part->next; /* handle string part */ part->display_type = RC_FORMAT_STRING; - part->text = rc_alloc_str(buffer, ret, line, ptr - line); + part->text = rc_alloc_str(parse, line, ptr - line); if (part->text) { /* remove backslashes used for escaping */ in = part->text; @@ -104,16 +104,16 @@ rc_richpresence_display_t* rc_parse_richpresence_display_internal(void* buffer, ++ptr; if (ptr > line) { - if (!buffer) { + if (!parse->buffer) { /* just calculating size, can't confirm lookup exists */ - part = RC_ALLOC(rc_richpresence_display_part_t, buffer, ret, scratch); + part = RC_ALLOC(rc_richpresence_display_part_t, parse); line = ++ptr; while (ptr < endline && *ptr != ')') ++ptr; if (*ptr == ')') { - rc_parse_value_internal(&part->value, ret, buffer, scratch, &line, L, funcs_ndx); - if (ret < 0) + rc_parse_value_internal(&part->value, &line, parse); + if (parse->offset < 0) return 0; ++ptr; } @@ -123,7 +123,7 @@ rc_richpresence_display_t* rc_parse_richpresence_display_internal(void* buffer, lookup = richpresence->first_lookup; while (lookup) { if (strncmp(lookup->name, line, ptr - line) == 0 && lookup->name[ptr - line] == '\0') { - part = RC_ALLOC(rc_richpresence_display_part_t, buffer, ret, scratch); + part = RC_ALLOC(rc_richpresence_display_part_t, parse); *next = part; next = &part->next; @@ -135,8 +135,9 @@ rc_richpresence_display_t* rc_parse_richpresence_display_internal(void* buffer, while (ptr < endline && *ptr != ')') ++ptr; if (*ptr == ')') { - rc_parse_value_internal(&part->value, ret, buffer, scratch, &line, L, funcs_ndx); - if (ret < 0) + rc_parse_value_internal(&part->value, &line, parse); + part->value.memrefs = 0; + if (parse->offset < 0) return 0; ++ptr; } @@ -148,7 +149,7 @@ rc_richpresence_display_t* rc_parse_richpresence_display_internal(void* buffer, } if (!lookup) { - part = RC_ALLOC(rc_richpresence_display_part_t, buffer, ret, scratch); + part = RC_ALLOC(rc_richpresence_display_part_t, parse); memset(part, 0, sizeof(rc_richpresence_display_part_t)); *next = part; next = &part->next; @@ -156,7 +157,7 @@ rc_richpresence_display_t* rc_parse_richpresence_display_internal(void* buffer, ptr = line; part->display_type = RC_FORMAT_STRING; - part->text = rc_alloc_str(buffer, ret, "[Unknown macro]", 15); + part->text = rc_alloc_str(parse, "[Unknown macro]", 15); } } } @@ -170,7 +171,7 @@ rc_richpresence_display_t* rc_parse_richpresence_display_internal(void* buffer, return self; } -const char* rc_parse_richpresence_lookup(rc_richpresence_lookup_t* lookup, const char* nextline, int* ret, void* buffer, void* scratch, lua_State* L, int funcs_ndx) +static const char* rc_parse_richpresence_lookup(rc_richpresence_lookup_t* lookup, const char* nextline, rc_parse_state_t* parse) { rc_richpresence_lookup_item_t** next; rc_richpresence_lookup_item_t* item; @@ -202,7 +203,7 @@ const char* rc_parse_richpresence_lookup(rc_richpresence_lookup_t* lookup, const line += chars + 1; if (chars == 1 && number[0] == '*') { - defaultlabel = rc_alloc_str(buffer, ret, line, endline - line); + defaultlabel = rc_alloc_str(parse, line, endline - line); continue; } @@ -211,18 +212,18 @@ const char* rc_parse_richpresence_lookup(rc_richpresence_lookup_t* lookup, const else key = strtoul(&number[0], 0, 10); - item = RC_ALLOC(rc_richpresence_lookup_item_t, buffer, ret, scratch); + item = RC_ALLOC(rc_richpresence_lookup_item_t, parse); item->value = key; - item->label = rc_alloc_str(buffer, ret, line, endline - line); + item->label = rc_alloc_str(parse, line, endline - line); *next = item; next = &item->next_item; } } while (1); if (!defaultlabel) - defaultlabel = rc_alloc_str(buffer, ret, "", 0); + defaultlabel = rc_alloc_str(parse, "", 0); - item = RC_ALLOC(rc_richpresence_lookup_item_t, buffer, ret, scratch); + item = RC_ALLOC(rc_richpresence_lookup_item_t, parse); item->value = 0; item->label = defaultlabel; item->next_item = 0; @@ -231,10 +232,11 @@ const char* rc_parse_richpresence_lookup(rc_richpresence_lookup_t* lookup, const return nextline; } -void rc_parse_richpresence_internal(rc_richpresence_t* self, int* ret, void* buffer, void* scratch, const char* script, lua_State* L, int funcs_ndx) { +void rc_parse_richpresence_internal(rc_richpresence_t* self, const char* script, rc_parse_state_t* parse) { rc_richpresence_display_t** nextdisplay; rc_richpresence_lookup_t** nextlookup; rc_richpresence_lookup_t* lookup; + rc_trigger_t* trigger; char format[64]; const char* display = 0; const char* line; @@ -254,26 +256,26 @@ void rc_parse_richpresence_internal(rc_richpresence_t* self, int* ret, void* buf if (strncmp(line, "Lookup:", 7) == 0) { line += 7; - lookup = RC_ALLOC(rc_richpresence_lookup_t, buffer, ret, scratch); - lookup->name = rc_alloc_str(buffer, ret, line, endline - line); + lookup = RC_ALLOC(rc_richpresence_lookup_t, parse); + lookup->name = rc_alloc_str(parse, line, endline - line); lookup->format = RC_FORMAT_LOOKUP; *nextlookup = lookup; nextlookup = &lookup->next; - nextline = rc_parse_richpresence_lookup(lookup, nextline, ret, buffer, scratch, L, funcs_ndx); + nextline = rc_parse_richpresence_lookup(lookup, nextline, parse); } else if (strncmp(line, "Format:", 7) == 0) { line += 7; - lookup = RC_ALLOC(rc_richpresence_lookup_t, buffer, ret, scratch); - lookup->name = rc_alloc_str(buffer, ret, line, endline - line); + lookup = RC_ALLOC(rc_richpresence_lookup_t, parse); + lookup->name = rc_alloc_str(parse, line, endline - line); lookup->first_item = 0; *nextlookup = lookup; nextlookup = &lookup->next; line = nextline; nextline = rc_parse_line(line, &endline); - if (buffer && strncmp(line, "FormatType=", 11) == 0) { + if (parse->buffer && strncmp(line, "FormatType=", 11) == 0) { line += 11; chars = endline - line; @@ -313,11 +315,13 @@ void rc_parse_richpresence_internal(rc_richpresence_t* self, int* ret, void* buf ++ptr; if (ptr < endline) { - *nextdisplay = rc_parse_richpresence_display_internal(buffer, ret, scratch, ptr + 1, endline, L, funcs_ndx, self); - rc_parse_trigger_internal(&((*nextdisplay)->trigger), ret, buffer, scratch, &line, L, funcs_ndx); - if (*ret < 0) + *nextdisplay = rc_parse_richpresence_display_internal(ptr + 1, endline, parse, self); + trigger = &((*nextdisplay)->trigger); + rc_parse_trigger_internal(trigger, &line, parse); + trigger->memrefs = 0; + if (parse->offset < 0) return; - if (buffer) + if (parse->buffer) nextdisplay = &((*nextdisplay)->next); } @@ -326,39 +330,45 @@ void rc_parse_richpresence_internal(rc_richpresence_t* self, int* ret, void* buf } /* non-conditional display: string */ - *nextdisplay = rc_parse_richpresence_display_internal(buffer, ret, scratch, line, endline, L, funcs_ndx, self); - hasdisplay = (*nextdisplay != NULL); - if (buffer) + *nextdisplay = rc_parse_richpresence_display_internal(line, endline, parse, self); + if (*nextdisplay) { + hasdisplay = 1; nextdisplay = &((*nextdisplay)->next); + } } /* finalize */ *nextdisplay = 0; - if (!hasdisplay && ret > 0) - *ret = RC_MISSING_DISPLAY_STRING; + if (!hasdisplay && parse->offset > 0) { + parse->offset = RC_MISSING_DISPLAY_STRING; + } } int rc_richpresence_size(const char* script) { - int ret; rc_richpresence_t* self; - rc_scratch_t scratch; + rc_parse_state_t parse; + rc_init_parse_state(&parse, 0, 0, 0); + + self = RC_ALLOC(rc_richpresence_t, &parse); + rc_parse_richpresence_internal(self, script, &parse); - ret = 0; - self = RC_ALLOC(rc_richpresence_t, 0, &ret, &scratch); - rc_parse_richpresence_internal(self, &ret, 0, &scratch, script, 0, 0); - return ret; + rc_destroy_parse_state(&parse); + return parse.offset; } rc_richpresence_t* rc_parse_richpresence(void* buffer, const char* script, lua_State* L, int funcs_ndx) { - int ret; rc_richpresence_t* self; - rc_scratch_t scratch; + rc_parse_state_t parse; + rc_init_parse_state(&parse, buffer, L, funcs_ndx); - ret = 0; - self = RC_ALLOC(rc_richpresence_t, buffer, &ret, &scratch); - rc_parse_richpresence_internal(self, &ret, buffer, 0, script, L, funcs_ndx); - return ret >= 0 ? self : 0; + self = RC_ALLOC(rc_richpresence_t, &parse); + rc_init_parse_state_memrefs(&parse, &self->memrefs); + + rc_parse_richpresence_internal(self, script, &parse); + + rc_destroy_parse_state(&parse); + return parse.offset >= 0 ? self : 0; } int rc_evaluate_richpresence(rc_richpresence_t* richpresence, char* buffer, unsigned buffersize, rc_peek_t peek, void* peek_ud, lua_State* L) { @@ -369,6 +379,8 @@ int rc_evaluate_richpresence(rc_richpresence_t* richpresence, char* buffer, unsi int chars; unsigned value; + rc_update_memref_values(richpresence->memrefs, peek, peek_ud); + ptr = buffer; display = richpresence->first_display; while (display) { diff --git a/deps/rcheevos/src/rcheevos/term.c b/deps/rcheevos/src/rcheevos/term.c index 33019fa54c..de4e01e048 100644 --- a/deps/rcheevos/src/rcheevos/term.c +++ b/deps/rcheevos/src/rcheevos/term.c @@ -1,18 +1,19 @@ #include "internal.h" -rc_term_t* rc_parse_term(int* ret, void* buffer, rc_scratch_t* scratch, const char** memaddr, lua_State* L, int funcs_ndx) { +rc_term_t* rc_parse_term(const char** memaddr, rc_parse_state_t* parse) { rc_term_t* self; const char* aux; + char size; int ret2; aux = *memaddr; - self = RC_ALLOC(rc_term_t, buffer, ret, scratch); + self = RC_ALLOC(rc_term_t, parse); self->invert = 0; - ret2 = rc_parse_operand(&self->operand1, &aux, 0, L, funcs_ndx); + ret2 = rc_parse_operand(&self->operand1, &aux, 0, parse); if (ret2 < 0) { - *ret = ret2; + parse->offset = ret2; return 0; } @@ -24,53 +25,63 @@ rc_term_t* rc_parse_term(int* ret, void* buffer, rc_scratch_t* scratch, const ch self->invert = 1; } - ret2 = rc_parse_operand(&self->operand2, &aux, 0, L, funcs_ndx); + ret2 = rc_parse_operand(&self->operand2, &aux, 0, parse); if (ret2 < 0) { - *ret = ret2; + parse->offset = ret2; return 0; } if (self->invert) { - switch (self->operand2.size) { - case RC_OPERAND_BIT_0: - case RC_OPERAND_BIT_1: - case RC_OPERAND_BIT_2: - case RC_OPERAND_BIT_3: - case RC_OPERAND_BIT_4: - case RC_OPERAND_BIT_5: - case RC_OPERAND_BIT_6: - case RC_OPERAND_BIT_7: + switch (self->operand2.type) { + case RC_OPERAND_ADDRESS: + case RC_OPERAND_DELTA: + case RC_OPERAND_PRIOR: + size = self->operand2.memref->memref.size; + break; + default: + size = RC_MEMSIZE_32_BITS; + break; + } + + switch (size) { + case RC_MEMSIZE_BIT_0: + case RC_MEMSIZE_BIT_1: + case RC_MEMSIZE_BIT_2: + case RC_MEMSIZE_BIT_3: + case RC_MEMSIZE_BIT_4: + case RC_MEMSIZE_BIT_5: + case RC_MEMSIZE_BIT_6: + case RC_MEMSIZE_BIT_7: /* invert is already 1 */ break; - case RC_OPERAND_LOW: - case RC_OPERAND_HIGH: + case RC_MEMSIZE_LOW: + case RC_MEMSIZE_HIGH: self->invert = 0xf; break; - case RC_OPERAND_8_BITS: + case RC_MEMSIZE_8_BITS: self->invert = 0xffU; break; - case RC_OPERAND_16_BITS: + case RC_MEMSIZE_16_BITS: self->invert = 0xffffU; break; - case RC_OPERAND_24_BITS: + case RC_MEMSIZE_24_BITS: self->invert = 0xffffffU; break; - case RC_OPERAND_32_BITS: + case RC_MEMSIZE_32_BITS: self->invert = 0xffffffffU; break; } } } else { - self->operand2.type = RC_OPERAND_FP; - self->operand2.size = RC_OPERAND_8_BITS; - self->operand2.fp_value = 1.0; + self->operand2.type = RC_OPERAND_CONST; + self->operand2.value = 1; } *memaddr = aux; @@ -84,5 +95,5 @@ unsigned rc_evaluate_term(rc_term_t* self, rc_peek_t peek, void* ud, lua_State* return value * (rc_evaluate_operand(&self->operand2, peek, ud, L) ^ self->invert); } - return (unsigned)(value * self->operand2.fp_value); + return (unsigned)((double)value * self->operand2.fp_value); } diff --git a/deps/rcheevos/src/rcheevos/trigger.c b/deps/rcheevos/src/rcheevos/trigger.c index 77113938af..90c3388164 100644 --- a/deps/rcheevos/src/rcheevos/trigger.c +++ b/deps/rcheevos/src/rcheevos/trigger.c @@ -2,7 +2,7 @@ #include -void rc_parse_trigger_internal(rc_trigger_t* self, int* ret, void* buffer, rc_scratch_t* scratch, const char** memaddr, lua_State* L, int funcs_ndx) { +void rc_parse_trigger_internal(rc_trigger_t* self, const char** memaddr, rc_parse_state_t* parse) { rc_condset_t** next; const char* aux; @@ -13,9 +13,9 @@ void rc_parse_trigger_internal(rc_trigger_t* self, int* ret, void* buffer, rc_sc self->requirement = 0; } else { - self->requirement = rc_parse_condset(ret, buffer, scratch, &aux, L, funcs_ndx); + self->requirement = rc_parse_condset(&aux, parse); - if (*ret < 0) { + if (parse->offset < 0) { return; } @@ -24,9 +24,9 @@ void rc_parse_trigger_internal(rc_trigger_t* self, int* ret, void* buffer, rc_sc while (*aux == 's' || *aux == 'S') { aux++; - *next = rc_parse_condset(ret, buffer, scratch, &aux, L, funcs_ndx); + *next = rc_parse_condset(&aux, parse); - if (*ret < 0) { + if (parse->offset < 0) { return; } @@ -38,31 +38,37 @@ void rc_parse_trigger_internal(rc_trigger_t* self, int* ret, void* buffer, rc_sc } int rc_trigger_size(const char* memaddr) { - int ret; rc_trigger_t* self; - rc_scratch_t scratch; + rc_parse_state_t parse; + rc_init_parse_state(&parse, 0, 0, 0); - ret = 0; - self = RC_ALLOC(rc_trigger_t, 0, &ret, &scratch); - rc_parse_trigger_internal(self, &ret, 0, &scratch, &memaddr, 0, 0); - return ret; + self = RC_ALLOC(rc_trigger_t, &parse); + rc_parse_trigger_internal(self, &memaddr, &parse); + + rc_destroy_parse_state(&parse); + return parse.offset; } rc_trigger_t* rc_parse_trigger(void* buffer, const char* memaddr, lua_State* L, int funcs_ndx) { - int ret; rc_trigger_t* self; - rc_scratch_t scratch; + rc_parse_state_t parse; + rc_init_parse_state(&parse, buffer, L, funcs_ndx); - ret = 0; - self = RC_ALLOC(rc_trigger_t, buffer, &ret, &scratch); - rc_parse_trigger_internal(self, &ret, buffer, 0, &memaddr, L, funcs_ndx); - return ret >= 0 ? self : 0; + self = RC_ALLOC(rc_trigger_t, &parse); + rc_init_parse_state_memrefs(&parse, &self->memrefs); + + rc_parse_trigger_internal(self, &memaddr, &parse); + + rc_destroy_parse_state(&parse); + return parse.offset >= 0 ? self : 0; } int rc_test_trigger(rc_trigger_t* self, rc_peek_t peek, void* ud, lua_State* L) { int ret, reset; rc_condset_t* condset; + rc_update_memref_values(self->memrefs, peek, ud); + reset = 0; ret = self->requirement != 0 ? rc_test_condset(self->requirement, &reset, peek, ud, L) : 1; condset = self->alternative; diff --git a/deps/rcheevos/src/rcheevos/value.c b/deps/rcheevos/src/rcheevos/value.c index 538088c68f..7320414a3e 100644 --- a/deps/rcheevos/src/rcheevos/value.c +++ b/deps/rcheevos/src/rcheevos/value.c @@ -1,14 +1,14 @@ #include "internal.h" -void rc_parse_value_internal(rc_value_t* self, int* ret, void* buffer, void* scratch, const char** memaddr, lua_State* L, int funcs_ndx) { +void rc_parse_value_internal(rc_value_t* self, const char** memaddr, rc_parse_state_t* parse) { rc_expression_t** next; next = &self->expressions; for (;;) { - *next = rc_parse_expression(ret, buffer, scratch, memaddr, L, funcs_ndx); + *next = rc_parse_expression(memaddr, parse); - if (*ret < 0) { + if (parse->offset < 0) { return; } @@ -25,31 +25,37 @@ void rc_parse_value_internal(rc_value_t* self, int* ret, void* buffer, void* scr } int rc_value_size(const char* memaddr) { - int ret; rc_value_t* self; - rc_scratch_t scratch; + rc_parse_state_t parse; + rc_init_parse_state(&parse, 0, 0, 0); - ret = 0; - self = RC_ALLOC(rc_value_t, 0, &ret, &scratch); - rc_parse_value_internal(self, &ret, 0, &scratch, &memaddr, 0, 0); - return ret; + self = RC_ALLOC(rc_value_t, &parse); + rc_parse_value_internal(self, &memaddr, &parse); + + rc_destroy_parse_state(&parse); + return parse.offset; } rc_value_t* rc_parse_value(void* buffer, const char* memaddr, lua_State* L, int funcs_ndx) { - int ret; rc_value_t* self; - rc_scratch_t scratch; + rc_parse_state_t parse; + rc_init_parse_state(&parse, buffer, L, funcs_ndx); - ret = 0; - self = RC_ALLOC(rc_value_t, buffer, &ret, &scratch); - rc_parse_value_internal(self, &ret, buffer, 0, &memaddr, L, funcs_ndx); - return ret >= 0 ? self : 0; + self = RC_ALLOC(rc_value_t, &parse); + rc_init_parse_state_memrefs(&parse, &self->memrefs); + + rc_parse_value_internal(self, &memaddr, &parse); + + rc_destroy_parse_state(&parse); + return parse.offset >= 0 ? self : 0; } unsigned rc_evaluate_value(rc_value_t* self, rc_peek_t peek, void* ud, lua_State* L) { rc_expression_t* exp; unsigned value, max; + rc_update_memref_values(self->memrefs, peek, ud); + exp = self->expressions; max = rc_evaluate_expression(exp, peek, ud, L); diff --git a/griffin/griffin.c b/griffin/griffin.c index 79204bf3b5..8ac7a65d59 100644 --- a/griffin/griffin.c +++ b/griffin/griffin.c @@ -178,6 +178,8 @@ ACHIEVEMENTS #include "../deps/rcheevos/src/rcheevos/term.c" #include "../deps/rcheevos/src/rcheevos/trigger.c" #include "../deps/rcheevos/src/rcheevos/value.c" +#include "../deps/rcheevos/src/rcheevos/memref.c" +#include "../deps/rcheevos/src/rcheevos/richpresence.c" #include "../deps/rcheevos/src/rurl/url.c" #endif From e35a3cb08b4a01b0f234afa9b9fedec6d19c49f8 Mon Sep 17 00:00:00 2001 From: Jamiras Date: Thu, 11 Apr 2019 18:50:24 -0600 Subject: [PATCH 8/9] use rcheevos for leaderboard processing --- cheevos-new/cheevos.c | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-) diff --git a/cheevos-new/cheevos.c b/cheevos-new/cheevos.c index 845bfdcb25..a588a17bdb 100644 --- a/cheevos-new/cheevos.c +++ b/cheevos-new/cheevos.c @@ -652,33 +652,33 @@ static void rcheevos_test_leaderboards(void) { rcheevos_lboard_t* lboard = rcheevos_locals.lboards; unsigned i; - unsigned value; for (i = 0; i < rcheevos_locals.patchdata.lboard_count; i++, lboard++) { - if (lboard->active) + switch (rc_evaluate_lboard(lboard->lboard, &lboard->last_value, rcheevos_peek, NULL, NULL)) { - value = rc_evaluate_value(&lboard->lboard->value, rcheevos_peek, NULL, NULL); + default: + case RC_LBOARD_INACTIVE: + break; - if (value != lboard->last_value) - { - lboard->last_value = value; - } + case RC_LBOARD_ACTIVE: + // this is where we would update the onscreen tracker + break; - if (rc_test_trigger(&lboard->lboard->submit, rcheevos_peek, NULL, NULL)) + case RC_LBOARD_TRIGGERED: rcheevos_lboard_submit(lboard); + break; - if (rc_test_trigger(&lboard->lboard->cancel, rcheevos_peek, NULL, NULL)) + case RC_LBOARD_CANCELED: { CHEEVOS_LOG(RCHEEVOS_TAG "Cancel leaderboard %s\n", lboard->info->title); lboard->active = 0; runloop_msg_queue_push("Leaderboard attempt cancelled!", 0, 2 * 60, false, NULL, MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO); + break; } - } - else - { - if (rc_test_trigger(&lboard->lboard->start, rcheevos_peek, NULL, NULL)) + + case RC_LBOARD_STARTED: { char buffer[256]; @@ -690,6 +690,7 @@ static void rcheevos_test_leaderboards(void) "Leaderboard Active: %s", lboard->info->title); runloop_msg_queue_push(buffer, 0, 2 * 60, false, NULL, MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO); runloop_msg_queue_push(lboard->info->description, 0, 3 * 60, false, NULL, MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO); + break; } } } From 9091409efa1d7797c1ef79b09f14bcdde63ea58c Mon Sep 17 00:00:00 2001 From: meleu Date: Fri, 19 Apr 2019 23:02:08 -0300 Subject: [PATCH 9/9] remove '#ifdef HAVE_NEW_CHEEVOS' leftovers --- cheevos/badges.h | 6 ------ cheevos/cheevos.h | 6 ------ qb/config.params.sh | 2 -- 3 files changed, 14 deletions(-) diff --git a/cheevos/badges.h b/cheevos/badges.h index c8788306c0..59a5737101 100644 --- a/cheevos/badges.h +++ b/cheevos/badges.h @@ -16,10 +16,6 @@ #ifndef __RARCH_CHEEVOS_OLD_BADGE_H #define __RARCH_CHEEVOS_OLD_BADGE_H -#ifdef HAVE_NEW_CHEEVOS -#include "../cheevos-new/badges.h" -#else - #include "../menu/menu_driver.h" #include @@ -46,5 +42,3 @@ static badges_ctx_t new_badges_ctx; RETRO_END_DECLS #endif - -#endif diff --git a/cheevos/cheevos.h b/cheevos/cheevos.h index 14c91380eb..3855bef73d 100644 --- a/cheevos/cheevos.h +++ b/cheevos/cheevos.h @@ -16,10 +16,6 @@ #ifndef __RARCH_CHEEVOS_OLD_H #define __RARCH_CHEEVOS_OLD_H -#ifdef HAVE_NEW_CHEEVOS -#include "../cheevos-new/cheevos.h" -#else - #include #include @@ -166,6 +162,4 @@ extern int cheats_were_enabled; RETRO_END_DECLS -#endif - #endif /* __RARCH_CHEEVOS_H */ diff --git a/qb/config.params.sh b/qb/config.params.sh index 8bb4d964f1..34699330c5 100644 --- a/qb/config.params.sh +++ b/qb/config.params.sh @@ -121,8 +121,6 @@ HAVE_QT=auto # Qt companion support C89_QT=no HAVE_XSHM=no # XShm video driver support HAVE_CHEEVOS=yes # Retro Achievements -HAVE_NEW_CHEEVOS=no # Use rcheevos to process RetroAchievements -C89_NEW_CHEEVOS=no HAVE_LUA=no # Lua support (for Retro Achievements) HAVE_DISCORD=yes # Discord Integration C89_DISCORD=no