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Merge more format overloads

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This commit is contained in:
Victor Zverovich 2018-07-22 09:39:50 -07:00
parent 4f16409730
commit 35538ca66c
5 changed files with 81 additions and 83 deletions
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2
doc/api.rst
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@ -38,7 +38,7 @@ arguments in the resulting string.
.. _format:
.. doxygenfunction:: format(string_view, const Args&...)
.. doxygenfunction:: format(const String&, const Args&...)
.. doxygenfunction:: vformat(string_view, format_args)
.. _print:

120
include/fmt/core.h
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@ -9,14 +9,13 @@
#define FMT_CORE_H_
#include <cassert>
#include <cstdio>
#include <cstring>
#include <iterator>
#include <string>
#include <type_traits>
// The fmt library version in the form major * 10000 + minor * 100 + patch.
#define FMT_VERSION 50100
#define FMT_VERSION 50200
#ifdef __has_feature
# define FMT_HAS_FEATURE(x) __has_feature(x)
@ -181,13 +180,6 @@
# define FMT_ASSERT(condition, message) assert((condition) && message)
#endif
#define FMT_DELETED = delete
// A macro to disallow the copy construction and assignment.
#define FMT_DISALLOW_COPY_AND_ASSIGN(Type) \
Type(const Type &) FMT_DELETED; \
void operator=(const Type &) FMT_DELETED
// libc++ supports string_view in pre-c++17.
#if (FMT_HAS_INCLUDE(<string_view>) && \
(__cplusplus > 201402L || defined(_LIBCPP_VERSION))) || \
@ -343,7 +335,8 @@ namespace internal {
template <typename T>
class basic_buffer {
private:
FMT_DISALLOW_COPY_AND_ASSIGN(basic_buffer);
basic_buffer(const basic_buffer &) = delete;
void operator=(const basic_buffer &) = delete;
T *ptr_;
std::size_t size_;
@ -815,7 +808,8 @@ namespace internal {
template <typename Context>
class arg_map {
private:
FMT_DISALLOW_COPY_AND_ASSIGN(arg_map);
arg_map(const arg_map &) = delete;
void operator=(const arg_map &) = delete;
typedef typename Context::char_type char_type;
@ -930,7 +924,8 @@ class basic_format_context :
private:
internal::arg_map<basic_format_context> map_;
FMT_DISALLOW_COPY_AND_ASSIGN(basic_format_context);
basic_format_context(const basic_format_context &) = delete;
void operator=(const basic_format_context &) = delete;
typedef internal::context_base<OutputIt, basic_format_context, Char> base;
typedef typename base::format_arg format_arg;
@ -1233,7 +1228,7 @@ inline internal::named_arg<T, wchar_t> arg(wstring_view name, const T &arg) {
// This function template is deleted intentionally to disable nested named
// arguments as in ``format("{}", arg("a", arg("b", 42)))``.
template <typename S, typename T, typename Char>
void arg(S, internal::named_arg<T, Char>) FMT_DELETED;
void arg(S, internal::named_arg<T, Char>) = delete;
#ifndef FMT_EXTENDED_COLORS
// color and (v)print_colored are deprecated.
@ -1252,6 +1247,61 @@ inline void print_colored(color c, wstring_view format_str,
}
#endif
// A base class for compile-time strings. It is defined in the fmt namespace to
// make formatting functions visible via ADL, e.g. format(fmt("{}"), 42).
struct compile_string {};
namespace internal {
// If S is a format string type, format_string_traints<S>::char_type gives its
// character type.
template <typename S, typename Enable = void>
struct format_string_traits {
private:
// Use constructability as a way to detect if format_string_traits is
// specialized because other methods are broken on MSVC2013.
format_string_traits();
};
template <typename Char>
struct format_string_traits_base { typedef Char char_type; };
template <typename Char>
struct format_string_traits<Char *> : format_string_traits_base<Char> {};
template <typename Char>
struct format_string_traits<const Char *> : format_string_traits_base<Char> {};
template <typename Char, std::size_t N>
struct format_string_traits<Char[N]> : format_string_traits_base<Char> {};
template <typename Char, std::size_t N>
struct format_string_traits<const Char[N]> : format_string_traits_base<Char> {};
template <typename Char>
struct format_string_traits<std::basic_string<Char>> :
format_string_traits_base<Char> {};
template <typename Char>
struct format_string_traits<basic_string_view<Char>> :
format_string_traits_base<Char> {};
template <typename S>
struct is_format_string :
std::integral_constant<
bool, std::is_constructible<format_string_traits<S>>::value> {};
template <typename S>
struct is_compile_string :
std::integral_constant<bool, std::is_base_of<compile_string, S>::value> {};
template <typename... Args, typename S>
typename std::enable_if<!is_compile_string<S>::value>::type
check_format_string(S) {}
template <typename... Args, typename S>
typename std::enable_if<is_compile_string<S>::value>::type
check_format_string(S);
} // namespace internal
format_context::iterator vformat_to(
internal::buffer &buf, string_view format_str, format_args args);
wformat_context::iterator vformat_to(
@ -1292,44 +1342,6 @@ typename std::enable_if<
std::string vformat(string_view format_str, format_args args);
std::wstring vformat(wstring_view format_str, wformat_args args);
namespace internal {
// If S is a format string type, format_string_traints<S>::char_type gives its
// character type.
template <typename S>
struct format_string_traits {
private:
// Use construtbility as a way to detect if format_string_traits is
// specialized because other methods are broken on MSVC2013.
format_string_traits();
};
template <typename Char>
struct format_string_traits_base { typedef Char char_type; };
template <typename Char>
struct format_string_traits<const Char *>: format_string_traits_base<Char> {};
template <typename Char>
struct format_string_traits<Char *>: format_string_traits_base<Char> {};
template <typename Char>
struct format_string_traits<std::basic_string<Char>>:
format_string_traits_base<Char> {};
template <typename Char>
struct format_string_traits<basic_string_view<Char>>:
format_string_traits_base<Char> {};
template <typename S>
struct is_format_string:
std::integral_constant<
bool, std::is_constructible<format_string_traits<S>>::value> {};
template <typename... Args, typename S>
typename std::enable_if<is_format_string<S>::value>::type
check_format_string(S) {}
} // namespace internal
/**
\rst
Formats arguments and returns the result as a string.
@ -1343,15 +1355,15 @@ typename std::enable_if<is_format_string<S>::value>::type
template <typename String, typename... Args>
inline std::basic_string<
typename internal::format_string_traits<String>::char_type>
format(String format_str, const Args & ... args) {
format(const String &format_str, const Args & ... args) {
typedef typename internal::format_string_traits<String>::char_type char_type;
internal::check_format_string<Args...>(format_str);
// This should be just
// return vformat(format_str, make_format_args(args...));
// return vformat(format_str, make_format_args(args...));
// but gcc has trouble optimizing the latter, so break it down.
typedef typename buffer_context<char_type>::type context_type;
format_arg_store<context_type, Args...> as{args...};
return vformat(format_str, as);
return vformat(basic_string_view<char_type>(format_str), as);
}
FMT_API void vprint(std::FILE *f, string_view format_str, format_args args);

28
include/fmt/format.h
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@ -1352,10 +1352,13 @@ FMT_CONSTEXPR unsigned basic_parse_context<Char, ErrorHandler>::next_arg_id() {
return 0;
}
struct compile_string {};
namespace internal {
template <typename S>
struct format_string_traits<
S, typename std::enable_if<std::is_base_of<compile_string, S>::value>::type>:
format_string_traits_base<char> {};
template <typename Char, typename Handler>
FMT_CONSTEXPR void handle_int_type_spec(Char spec, Handler &&handler) {
switch (spec) {
@ -1536,8 +1539,6 @@ class arg_formatter_base {
writer_type writer_;
format_specs &specs_;
FMT_DISALLOW_COPY_AND_ASSIGN(arg_formatter_base);
struct char_writer {
char_type value;
template <typename It>
@ -1645,10 +1646,6 @@ class arg_formatter_base {
}
};
template <typename S>
struct is_compile_string:
std::integral_constant<bool, std::is_base_of<compile_string, S>::value> {};
template <typename Char>
FMT_CONSTEXPR bool is_name_start(Char c) {
return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c;
@ -2464,13 +2461,9 @@ class basic_writer {
typedef basic_format_specs<char_type> format_specs;
private:
// Output iterator.
iterator out_;
iterator out_; // Output iterator.
std::unique_ptr<locale_provider> locale_;
FMT_DISALLOW_COPY_AND_ASSIGN(basic_writer);
iterator out() const { return out_; }
// Attempts to reserve space for n extra characters in the output range.
@ -3677,14 +3670,6 @@ inline std::wstring vformat(wstring_view format_str, wformat_args args) {
return to_string(buffer);
}
template <typename String, typename... Args>
inline typename std::enable_if<
internal::is_compile_string<String>::value, std::string>::type
format(String format_str, const Args & ... args) {
internal::check_format_string<Args...>(format_str);
return vformat(format_str.data(), make_format_args(args...));
}
template <typename String, typename... Args>
inline typename std::enable_if<internal::is_compile_string<String>::value>::type
print(String format_str, const Args & ... args) {
@ -3983,6 +3968,7 @@ FMT_END_NAMESPACE
struct S : fmt::compile_string { \
static FMT_CONSTEXPR pointer data() { return s; } \
static FMT_CONSTEXPR size_t size() { return sizeof(s); } \
explicit operator fmt::string_view() const { return s; } \
}; \
return S{}; \
}()

10
include/fmt/posix.h
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@ -184,7 +184,9 @@ public:
#else
private:
FMT_DISALLOW_COPY_AND_ASSIGN(buffered_file);
buffered_file(const buffered_file &) = delete;
void operator=(const buffered_file &) = delete;
public:
buffered_file(buffered_file &&other) FMT_NOEXCEPT : file_(other.file_) {
@ -294,7 +296,8 @@ class file {
#else
private:
FMT_DISALLOW_COPY_AND_ASSIGN(file);
file(const file &) = delete;
void operator=(const file &) = delete;
public:
file(file &&other) FMT_NOEXCEPT : fd_(other.fd_) {
@ -381,7 +384,8 @@ class Locale {
locale_t locale_;
FMT_DISALLOW_COPY_AND_ASSIGN(Locale);
Locale(const Locale &) = delete;
void operator=(const Locale &) = delete;
public:
typedef locale_t Type;

4
include/fmt/printf.h
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@ -142,8 +142,6 @@ class char_converter: public function<void> {
private:
basic_format_arg<Context> &arg_;
FMT_DISALLOW_COPY_AND_ASSIGN(char_converter);
public:
explicit char_converter(basic_format_arg<Context> &arg) : arg_(arg) {}
@ -169,8 +167,6 @@ class printf_width_handler: public function<unsigned> {
format_specs &spec_;
FMT_DISALLOW_COPY_AND_ASSIGN(printf_width_handler);
public:
explicit printf_width_handler(format_specs &spec) : spec_(spec) {}