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lua: include stacktrace when we access an invalid property

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This commit is contained in:
David Capello 2018-09-10 16:00:02 -03:00
parent 0b72249fcd
commit 5a6ff70edc
1 changed files with 13 additions and 4 deletions
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17
src/app/script/luacpp.cpp
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@ -10,10 +10,12 @@
#include "app/script/luacpp.h"
#include <cstdio>
namespace app {
namespace script {
static const char* mt_index_code =
static const char mt_index_code[] =
"__generic_mt_index = function(t, k) "
" local mt = getmetatable(t) "
" local f = mt[k] "
@ -21,7 +23,7 @@ static const char* mt_index_code =
" f = mt.__getters[k] "
" if f then return f(t) end "
" if type(t) == 'table' then return rawget(t, k) end "
" error('Field '..tostring(k)..' does not exist')"
" error(debug.traceback()..': Field '..tostring(k)..' does not exist')"
"end "
"__generic_mt_newindex = function(t, k, v) "
" local mt = getmetatable(t) "
@ -30,12 +32,19 @@ static const char* mt_index_code =
" f = mt.__setters[k] "
" if f then return f(t, v) end "
" if type(t) == 'table' then return rawset(t, k, v) end "
" error('Cannot set field '..tostring(k))"
" error(debug.traceback()..': Cannot set field '..tostring(k))"
"end";
void run_mt_index_code(lua_State* L)
{
luaL_dostring(L, mt_index_code);
if (luaL_loadbuffer(L, mt_index_code, sizeof(mt_index_code)-1, "internal") ||
lua_pcall(L, 0, 0, 0)) {
// Error case
std::string err;
const char* s = lua_tostring(L, -1);
if (s)
std::puts(s);
}
}
void create_mt_getters_setters(lua_State* L,