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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_FORMAT
#define _LIBCPP_FORMAT
/*
namespace std {
// [format.context], class template basic_format_context
template<class Out, class charT> class basic_format_context;
using format_context = basic_format_context<unspecified, char>;
using wformat_context = basic_format_context<unspecified, wchar_t>;
// [format.args], class template basic_format_args
template<class Context> class basic_format_args;
using format_args = basic_format_args<format_context>;
using wformat_args = basic_format_args<wformat_context>;
// [format.fmt.string], class template basic-format-string
template<class charT, class... Args>
struct basic-format-string; // exposition only
template<class... Args>
using format-string = // exposition only
basic-format-string<char, type_identity_t<Args>...>;
template<class... Args>
using wformat-string = // exposition only
basic-format-string<wchar_t, type_identity_t<Args>...>;
// [format.functions], formatting functions
template<class... Args>
string format(format-string<Args...> fmt, Args&&... args);
template<class... Args>
wstring format(wformat-string<Args...> fmt, Args&&... args);
template<class... Args>
string format(const locale& loc, format-string<Args...> fmt, Args&&... args);
template<class... Args>
wstring format(const locale& loc, wformat-string<Args...> fmt, Args&&... args);
string vformat(string_view fmt, format_args args);
wstring vformat(wstring_view fmt, wformat_args args);
string vformat(const locale& loc, string_view fmt, format_args args);
wstring vformat(const locale& loc, wstring_view fmt, wformat_args args);
template<class Out, class... Args>
Out format_to(Out out, format-string<Args...> fmt, Args&&... args);
template<class Out, class... Args>
Out format_to(Out out, wformat-string<Args...> fmt, Args&&... args);
template<class Out, class... Args>
Out format_to(Out out, const locale& loc, format-string<Args...> fmt, Args&&... args);
template<class Out, class... Args>
Out format_to(Out out, const locale& loc, wformat-string<Args...> fmt, Args&&... args);
template<class Out>
Out vformat_to(Out out, string_view fmt, format_args args);
template<class Out>
Out vformat_to(Out out, wstring_view fmt, wformat_args args);
template<class Out>
Out vformat_to(Out out, const locale& loc, string_view fmt,
format_args char> args);
template<class Out>
Out vformat_to(Out out, const locale& loc, wstring_view fmt,
wformat_args args);
template<class Out> struct format_to_n_result {
Out out;
iter_difference_t<Out> size;
};
template<class Out, class... Args>
format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
format-string<Args...> fmt, Args&&... args);
template<class Out, class... Args>
format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
wformat-string<Args...> fmt, Args&&... args);
template<class Out, class... Args>
format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
const locale& loc, format-string<Args...> fmt,
Args&&... args);
template<class Out, class... Args>
format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
const locale& loc, wformat-string<Args...> fmt,
Args&&... args);
template<class... Args>
size_t formatted_size(format-string<Args...> fmt, Args&&... args);
template<class... Args>
size_t formatted_size(wformat-string<Args...> fmt, Args&&... args);
template<class... Args>
size_t formatted_size(const locale& loc, format-string<Args...> fmt, Args&&... args);
template<class... Args>
size_t formatted_size(const locale& loc, wformat-string<Args...> fmt, Args&&... args);
// [format.formatter], formatter
template<class T, class charT = char> struct formatter;
// [format.parse.ctx], class template basic_format_parse_context
template<class charT> class basic_format_parse_context;
using format_parse_context = basic_format_parse_context<char>;
using wformat_parse_context = basic_format_parse_context<wchar_t>;
// [format.arguments], arguments
// [format.arg], class template basic_format_arg
template<class Context> class basic_format_arg;
template<class Visitor, class Context>
see below visit_format_arg(Visitor&& vis, basic_format_arg<Context> arg);
// [format.arg.store], class template format-arg-store
template<class Context, class... Args> struct format-arg-store; // exposition only
template<class Context = format_context, class... Args>
format-arg-store<Context, Args...>
make_format_args(Args&&... args);
template<class... Args>
format-arg-store<wformat_context, Args...>
make_wformat_args(Args&&... args);
// [format.error], class format_error
class format_error;
}
*/
#include <__assert> // all public C++ headers provide the assertion handler
// Make sure all feature-test macros are available.
#include <version>
// Enable the contents of the header only when libc++ was built with LIBCXX_ENABLE_INCOMPLETE_FEATURES.
#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_FORMAT)
#include <__algorithm/clamp.h>
#include <__config>
#include <__debug>
#include <__format/buffer.h>
#include <__format/concepts.h>
#include <__format/enable_insertable.h>
#include <__format/format_arg.h>
#include <__format/format_arg_store.h>
#include <__format/format_args.h>
#include <__format/format_context.h>
#include <__format/format_error.h>
#include <__format/format_fwd.h>
#include <__format/format_parse_context.h>
#include <__format/format_string.h>
#include <__format/format_to_n_result.h>
#include <__format/formatter.h>
#include <__format/formatter_bool.h>
#include <__format/formatter_char.h>
#include <__format/formatter_floating_point.h>
#include <__format/formatter_integer.h>
#include <__format/formatter_pointer.h>
#include <__format/formatter_string.h>
#include <__format/parser_std_format_spec.h>
#include <__iterator/back_insert_iterator.h>
#include <__iterator/incrementable_traits.h>
#include <__variant/monostate.h>
#include <array>
#include <concepts>
#include <string>
#include <string_view>
#include <type_traits>
#ifndef _LIBCPP_HAS_NO_LOCALIZATION
#include <locale>
#endif
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER > 17
// TODO FMT Move the implementation in this file to its own granular headers.
// TODO FMT Evaluate which templates should be external templates. This
// improves the efficiency of the header. However since the header is still
// under heavy development and not all classes are stable it makes no sense
// to do this optimization now.
using format_args = basic_format_args<format_context>;
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
using wformat_args = basic_format_args<wformat_context>;
#endif
template <class _Context = format_context, class... _Args>
_LIBCPP_HIDE_FROM_ABI __format_arg_store<_Context, _Args...> make_format_args(_Args&&... __args) {
return _VSTD::__format_arg_store<_Context, _Args...>(__args...);
}
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI __format_arg_store<wformat_context, _Args...> make_wformat_args(_Args&&... __args) {
return _VSTD::__format_arg_store<wformat_context, _Args...>(__args...);
}
#endif
namespace __format {
/// Helper class parse and handle argument.
///
/// When parsing a handle which is not enabled the code is ill-formed.
/// This helper uses the parser of the appropriate formatter for the stored type.
template <class _CharT>
class _LIBCPP_TEMPLATE_VIS __compile_time_handle {
public:
_LIBCPP_HIDE_FROM_ABI
constexpr void __parse(basic_format_parse_context<_CharT>& __parse_ctx) const { __parse_(__parse_ctx); }
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI constexpr void __enable() {
__parse_ = [](basic_format_parse_context<_CharT>& __parse_ctx) {
formatter<_Tp, _CharT> __f;
__parse_ctx.advance_to(__f.parse(__parse_ctx));
};
}
// Before calling __parse the proper handler needs to be set with __enable.
// The default handler isn't a core constant expression.
_LIBCPP_HIDE_FROM_ABI constexpr __compile_time_handle()
: __parse_([](basic_format_parse_context<_CharT>&) { __throw_format_error("Not a handle"); }) {}
private:
void (*__parse_)(basic_format_parse_context<_CharT>&);
};
// Dummy format_context only providing the parts used during constant
// validation of the basic-format-string.
template <class _CharT>
struct _LIBCPP_TEMPLATE_VIS __compile_time_basic_format_context {
public:
using char_type = _CharT;
_LIBCPP_HIDE_FROM_ABI constexpr explicit __compile_time_basic_format_context(
const __arg_t* __args, const __compile_time_handle<_CharT>* __handles, size_t __size)
: __args_(__args), __handles_(__handles), __size_(__size) {}
// During the compile-time validation nothing needs to be written.
// Therefore all operations of this iterator are a NOP.
struct iterator {
_LIBCPP_HIDE_FROM_ABI constexpr iterator& operator=(_CharT) { return *this; }
_LIBCPP_HIDE_FROM_ABI constexpr iterator& operator*() { return *this; }
_LIBCPP_HIDE_FROM_ABI constexpr iterator operator++(int) { return *this; }
};
_LIBCPP_HIDE_FROM_ABI constexpr __arg_t arg(size_t __id) const {
if (__id >= __size_)
__throw_format_error("Argument index out of bounds");
return __args_[__id];
}
_LIBCPP_HIDE_FROM_ABI constexpr const __compile_time_handle<_CharT>& __handle(size_t __id) const {
if (__id >= __size_)
__throw_format_error("Argument index out of bounds");
return __handles_[__id];
}
_LIBCPP_HIDE_FROM_ABI constexpr iterator out() { return {}; }
_LIBCPP_HIDE_FROM_ABI constexpr void advance_to(iterator) {}
private:
const __arg_t* __args_;
const __compile_time_handle<_CharT>* __handles_;
size_t __size_;
};
_LIBCPP_HIDE_FROM_ABI
constexpr void __compile_time_validate_integral(__arg_t __type) {
switch (__type) {
case __arg_t::__int:
case __arg_t::__long_long:
case __arg_t::__i128:
case __arg_t::__unsigned:
case __arg_t::__unsigned_long_long:
case __arg_t::__u128:
return;
default:
__throw_format_error("Argument isn't an integral type");
}
}
// _HasPrecision does the formatter have a precision?
template <class _CharT, class _Tp, bool _HasPrecision = false>
_LIBCPP_HIDE_FROM_ABI constexpr void
__compile_time_validate_argument(basic_format_parse_context<_CharT>& __parse_ctx,
__compile_time_basic_format_context<_CharT>& __ctx) {
formatter<_Tp, _CharT> __formatter;
__parse_ctx.advance_to(__formatter.parse(__parse_ctx));
// [format.string.std]/7
// ... If the corresponding formatting argument is not of integral type, or
// its value is negative for precision or non-positive for width, an
// exception of type format_error is thrown.
//
// Validate whether the arguments are integrals.
if constexpr (requires(formatter<_Tp, _CharT> __f) { __f.__width_needs_substitution(); }) {
// TODO FMT Remove this when parser v1 has been phased out.
if (__formatter.__width_needs_substitution())
__format::__compile_time_validate_integral(__ctx.arg(__formatter.__width));
if constexpr (_HasPrecision)
if (__formatter.__precision_needs_substitution())
__format::__compile_time_validate_integral(__ctx.arg(__formatter.__precision));
} else {
if (__formatter.__parser_.__width_as_arg_)
__format::__compile_time_validate_integral(__ctx.arg(__formatter.__parser_.__width_));
if constexpr (_HasPrecision)
if (__formatter.__parser_.__precision_as_arg_)
__format::__compile_time_validate_integral(__ctx.arg(__formatter.__parser_.__precision_));
}
}
template <class _CharT>
_LIBCPP_HIDE_FROM_ABI constexpr void __compile_time_visit_format_arg(basic_format_parse_context<_CharT>& __parse_ctx,
__compile_time_basic_format_context<_CharT>& __ctx,
__arg_t __type) {
switch (__type) {
case __arg_t::__none:
__throw_format_error("Invalid argument");
case __arg_t::__boolean:
return __format::__compile_time_validate_argument<_CharT, bool>(__parse_ctx, __ctx);
case __arg_t::__char_type:
return __format::__compile_time_validate_argument<_CharT, _CharT>(__parse_ctx, __ctx);
case __arg_t::__int:
return __format::__compile_time_validate_argument<_CharT, int>(__parse_ctx, __ctx);
case __arg_t::__long_long:
return __format::__compile_time_validate_argument<_CharT, long long>(__parse_ctx, __ctx);
case __arg_t::__i128:
# ifndef _LIBCPP_HAS_NO_INT128
return __format::__compile_time_validate_argument<_CharT, __int128_t>(__parse_ctx, __ctx);
# else
__throw_format_error("Invalid argument");
# endif
return;
case __arg_t::__unsigned:
return __format::__compile_time_validate_argument<_CharT, unsigned>(__parse_ctx, __ctx);
case __arg_t::__unsigned_long_long:
return __format::__compile_time_validate_argument<_CharT, unsigned long long>(__parse_ctx, __ctx);
case __arg_t::__u128:
# ifndef _LIBCPP_HAS_NO_INT128
return __format::__compile_time_validate_argument<_CharT, __uint128_t>(__parse_ctx, __ctx);
# else
__throw_format_error("Invalid argument");
# endif
return;
case __arg_t::__float:
return __format::__compile_time_validate_argument<_CharT, float, true>(__parse_ctx, __ctx);
case __arg_t::__double:
return __format::__compile_time_validate_argument<_CharT, double, true>(__parse_ctx, __ctx);
case __arg_t::__long_double:
return __format::__compile_time_validate_argument<_CharT, long double, true>(__parse_ctx, __ctx);
case __arg_t::__const_char_type_ptr:
return __format::__compile_time_validate_argument<_CharT, const _CharT*, true>(__parse_ctx, __ctx);
case __arg_t::__string_view:
return __format::__compile_time_validate_argument<_CharT, basic_string_view<_CharT>, true>(__parse_ctx, __ctx);
case __arg_t::__ptr:
return __format::__compile_time_validate_argument<_CharT, const void*>(__parse_ctx, __ctx);
case __arg_t::__handle:
__throw_format_error("Handle should use __compile_time_validate_handle_argument");
}
__throw_format_error("Invalid argument");
}
template <class _CharT, class _ParseCtx, class _Ctx>
_LIBCPP_HIDE_FROM_ABI constexpr const _CharT*
__handle_replacement_field(const _CharT* __begin, const _CharT* __end,
_ParseCtx& __parse_ctx, _Ctx& __ctx) {
__format::__parse_number_result __r =
__format::__parse_arg_id(__begin, __end, __parse_ctx);
bool __parse = *__r.__ptr == _CharT(':');
switch (*__r.__ptr) {
case _CharT(':'):
// The arg-id has a format-specifier, advance the input to the format-spec.
__parse_ctx.advance_to(__r.__ptr + 1);
break;
case _CharT('}'):
// The arg-id has no format-specifier.
__parse_ctx.advance_to(__r.__ptr);
break;
default:
__throw_format_error(
"The replacement field arg-id should terminate at a ':' or '}'");
}
if constexpr (same_as<_Ctx, __compile_time_basic_format_context<_CharT>>) {
__arg_t __type = __ctx.arg(__r.__value);
if (__type == __arg_t::__handle)
__ctx.__handle(__r.__value).__parse(__parse_ctx);
else
__format::__compile_time_visit_format_arg(__parse_ctx, __ctx, __type);
} else
_VSTD::visit_format_arg(
[&](auto __arg) {
if constexpr (same_as<decltype(__arg), monostate>)
__throw_format_error("Argument index out of bounds");
else if constexpr (same_as<decltype(__arg), typename basic_format_arg<_Ctx>::handle>)
__arg.format(__parse_ctx, __ctx);
else {
formatter<decltype(__arg), _CharT> __formatter;
if (__parse)
__parse_ctx.advance_to(__formatter.parse(__parse_ctx));
__ctx.advance_to(__formatter.format(__arg, __ctx));
}
},
__ctx.arg(__r.__value));
__begin = __parse_ctx.begin();
if (__begin == __end || *__begin != _CharT('}'))
__throw_format_error("The replacement field misses a terminating '}'");
return ++__begin;
}
template <class _ParseCtx, class _Ctx>
_LIBCPP_HIDE_FROM_ABI constexpr typename _Ctx::iterator
__vformat_to(_ParseCtx&& __parse_ctx, _Ctx&& __ctx) {
using _CharT = typename _ParseCtx::char_type;
static_assert(same_as<typename _Ctx::char_type, _CharT>);
const _CharT* __begin = __parse_ctx.begin();
const _CharT* __end = __parse_ctx.end();
typename _Ctx::iterator __out_it = __ctx.out();
while (__begin != __end) {
switch (*__begin) {
case _CharT('{'):
++__begin;
if (__begin == __end)
__throw_format_error("The format string terminates at a '{'");
if (*__begin != _CharT('{')) [[likely]] {
__ctx.advance_to(_VSTD::move(__out_it));
__begin =
__handle_replacement_field(__begin, __end, __parse_ctx, __ctx);
__out_it = __ctx.out();
// The output is written and __begin points to the next character. So
// start the next iteration.
continue;
}
// The string is an escape character.
break;
case _CharT('}'):
++__begin;
if (__begin == __end || *__begin != _CharT('}'))
__throw_format_error(
"The format string contains an invalid escape sequence");
break;
}
// Copy the character to the output verbatim.
*__out_it++ = *__begin++;
}
return __out_it;
}
} // namespace __format
template <class _CharT, class... _Args>
struct _LIBCPP_TEMPLATE_VIS __basic_format_string {
basic_string_view<_CharT> __str_;
template <class _Tp>
requires convertible_to<const _Tp&, basic_string_view<_CharT>>
consteval __basic_format_string(const _Tp& __str) : __str_{__str} {
__format::__vformat_to(basic_format_parse_context<_CharT>{__str_, sizeof...(_Args)},
_Context{__types_.data(), __handles_.data(), sizeof...(_Args)});
}
private:
using _Context = __format::__compile_time_basic_format_context<_CharT>;
static constexpr array<__format::__arg_t, sizeof...(_Args)> __types_{
__format::__determine_arg_t<_Context, remove_cvref_t<_Args>>()...};
// TODO FMT remove this work-around when the AIX ICE has been resolved.
# if defined(_AIX) && defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER < 1400
template <class _Tp>
static constexpr __format::__compile_time_handle<_CharT> __get_handle() {
__format::__compile_time_handle<_CharT> __handle;
if (__format::__determine_arg_t<_Context, _Tp>() == __format::__arg_t::__handle)
__handle.template __enable<_Tp>();
return __handle;
}
static constexpr array<__format::__compile_time_handle<_CharT>, sizeof...(_Args)> __handles_{
__get_handle<_Args>()...};
# else
static constexpr array<__format::__compile_time_handle<_CharT>, sizeof...(_Args)> __handles_{[] {
using _Tp = remove_cvref_t<_Args>;
__format::__compile_time_handle<_CharT> __handle;
if (__format::__determine_arg_t<_Context, _Tp>() == __format::__arg_t::__handle)
__handle.template __enable<_Tp>();
return __handle;
}()...};
# endif
};
template <class... _Args>
using __format_string_t = __basic_format_string<char, type_identity_t<_Args>...>;
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
template <class... _Args>
using __wformat_string_t = __basic_format_string<wchar_t, type_identity_t<_Args>...>;
#endif
template <class _OutIt, class _CharT, class _FormatOutIt>
requires(output_iterator<_OutIt, const _CharT&>) _LIBCPP_HIDE_FROM_ABI _OutIt
__vformat_to(
_OutIt __out_it, basic_string_view<_CharT> __fmt,
basic_format_args<basic_format_context<_FormatOutIt, _CharT>> __args) {
if constexpr (same_as<_OutIt, _FormatOutIt>)
return _VSTD::__format::__vformat_to(
basic_format_parse_context{__fmt, __args.__size()},
_VSTD::__format_context_create(_VSTD::move(__out_it), __args));
else {
__format::__format_buffer<_OutIt, _CharT> __buffer{_VSTD::move(__out_it)};
_VSTD::__format::__vformat_to(
basic_format_parse_context{__fmt, __args.__size()},
_VSTD::__format_context_create(__buffer.make_output_iterator(),
__args));
return _VSTD::move(__buffer).out();
}
}
// The function is _LIBCPP_ALWAYS_INLINE since the compiler is bad at inlining
// https://reviews.llvm.org/D110499#inline-1180704
// TODO FMT Evaluate whether we want to file a Clang bug report regarding this.
template <output_iterator<const char&> _OutIt>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt
vformat_to(_OutIt __out_it, string_view __fmt, format_args __args) {
return _VSTD::__vformat_to(_VSTD::move(__out_it), __fmt, __args);
}
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
template <output_iterator<const wchar_t&> _OutIt>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt
vformat_to(_OutIt __out_it, wstring_view __fmt, wformat_args __args) {
return _VSTD::__vformat_to(_VSTD::move(__out_it), __fmt, __args);
}
#endif
template <output_iterator<const char&> _OutIt, class... _Args>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt
format_to(_OutIt __out_it, __format_string_t<_Args...> __fmt, _Args&&... __args) {
return _VSTD::vformat_to(_VSTD::move(__out_it), __fmt.__str_,
_VSTD::make_format_args(__args...));
}
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
template <output_iterator<const wchar_t&> _OutIt, class... _Args>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt
format_to(_OutIt __out_it, __wformat_string_t<_Args...> __fmt, _Args&&... __args) {
return _VSTD::vformat_to(_VSTD::move(__out_it), __fmt.__str_,
_VSTD::make_wformat_args(__args...));
}
#endif
_LIBCPP_ALWAYS_INLINE inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT string
vformat(string_view __fmt, format_args __args) {
string __res;
_VSTD::vformat_to(_VSTD::back_inserter(__res), __fmt, __args);
return __res;
}
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
_LIBCPP_ALWAYS_INLINE inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT wstring
vformat(wstring_view __fmt, wformat_args __args) {
wstring __res;
_VSTD::vformat_to(_VSTD::back_inserter(__res), __fmt, __args);
return __res;
}
#endif
template <class... _Args>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT string format(__format_string_t<_Args...> __fmt,
_Args&&... __args) {
return _VSTD::vformat(__fmt.__str_, _VSTD::make_format_args(__args...));
}
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
template <class... _Args>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT wstring
format(__wformat_string_t<_Args...> __fmt, _Args&&... __args) {
return _VSTD::vformat(__fmt.__str_, _VSTD::make_wformat_args(__args...));
}
#endif
template <class _Context, class _OutIt, class _CharT>
_LIBCPP_HIDE_FROM_ABI format_to_n_result<_OutIt> __vformat_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n,
basic_string_view<_CharT> __fmt,
basic_format_args<_Context> __args) {
__format::__format_to_n_buffer<_OutIt, _CharT> __buffer{_VSTD::move(__out_it), __n};
_VSTD::__format::__vformat_to(basic_format_parse_context{__fmt, __args.__size()},
_VSTD::__format_context_create(__buffer.make_output_iterator(), __args));
return _VSTD::move(__buffer).result();
}
template <output_iterator<const char&> _OutIt, class... _Args>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT format_to_n_result<_OutIt>
format_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, __format_string_t<_Args...> __fmt, _Args&&... __args) {
return _VSTD::__vformat_to_n<format_context>(_VSTD::move(__out_it), __n, __fmt.__str_, _VSTD::make_format_args(__args...));
}
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
template <output_iterator<const wchar_t&> _OutIt, class... _Args>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT format_to_n_result<_OutIt>
format_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, __wformat_string_t<_Args...> __fmt,
_Args&&... __args) {
return _VSTD::__vformat_to_n<wformat_context>(_VSTD::move(__out_it), __n, __fmt.__str_, _VSTD::make_wformat_args(__args...));
}
#endif
template <class _CharT>
_LIBCPP_HIDE_FROM_ABI size_t __vformatted_size(basic_string_view<_CharT> __fmt, auto __args) {
__format::__formatted_size_buffer<_CharT> __buffer;
_VSTD::__format::__vformat_to(basic_format_parse_context{__fmt, __args.__size()},
_VSTD::__format_context_create(__buffer.make_output_iterator(), __args));
return _VSTD::move(__buffer).result();
}
template <class... _Args>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT size_t
formatted_size(__format_string_t<_Args...> __fmt, _Args&&... __args) {
return _VSTD::__vformatted_size(__fmt.__str_, basic_format_args{_VSTD::make_format_args(__args...)});
}
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
template <class... _Args>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT size_t
formatted_size(__wformat_string_t<_Args...> __fmt, _Args&&... __args) {
return _VSTD::__vformatted_size(__fmt.__str_, basic_format_args{_VSTD::make_wformat_args(__args...)});
}
#endif
#ifndef _LIBCPP_HAS_NO_LOCALIZATION
template <class _OutIt, class _CharT, class _FormatOutIt>
requires(output_iterator<_OutIt, const _CharT&>) _LIBCPP_HIDE_FROM_ABI _OutIt
__vformat_to(
_OutIt __out_it, locale __loc, basic_string_view<_CharT> __fmt,
basic_format_args<basic_format_context<_FormatOutIt, _CharT>> __args) {
if constexpr (same_as<_OutIt, _FormatOutIt>)
return _VSTD::__format::__vformat_to(
basic_format_parse_context{__fmt, __args.__size()},
_VSTD::__format_context_create(_VSTD::move(__out_it), __args,
_VSTD::move(__loc)));
else {
__format::__format_buffer<_OutIt, _CharT> __buffer{_VSTD::move(__out_it)};
_VSTD::__format::__vformat_to(
basic_format_parse_context{__fmt, __args.__size()},
_VSTD::__format_context_create(__buffer.make_output_iterator(),
__args, _VSTD::move(__loc)));
return _VSTD::move(__buffer).out();
}
}
template <output_iterator<const char&> _OutIt>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt vformat_to(
_OutIt __out_it, locale __loc, string_view __fmt, format_args __args) {
return _VSTD::__vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt,
__args);
}
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
template <output_iterator<const wchar_t&> _OutIt>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt vformat_to(
_OutIt __out_it, locale __loc, wstring_view __fmt, wformat_args __args) {
return _VSTD::__vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt,
__args);
}
#endif
template <output_iterator<const char&> _OutIt, class... _Args>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt
format_to(_OutIt __out_it, locale __loc, __format_string_t<_Args...> __fmt, _Args&&... __args) {
return _VSTD::vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt.__str_,
_VSTD::make_format_args(__args...));
}
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
template <output_iterator<const wchar_t&> _OutIt, class... _Args>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT _OutIt
format_to(_OutIt __out_it, locale __loc, __wformat_string_t<_Args...> __fmt, _Args&&... __args) {
return _VSTD::vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt.__str_,
_VSTD::make_wformat_args(__args...));
}
#endif
_LIBCPP_ALWAYS_INLINE inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT string
vformat(locale __loc, string_view __fmt, format_args __args) {
string __res;
_VSTD::vformat_to(_VSTD::back_inserter(__res), _VSTD::move(__loc), __fmt,
__args);
return __res;
}
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
_LIBCPP_ALWAYS_INLINE inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT wstring
vformat(locale __loc, wstring_view __fmt, wformat_args __args) {
wstring __res;
_VSTD::vformat_to(_VSTD::back_inserter(__res), _VSTD::move(__loc), __fmt,
__args);
return __res;
}
#endif
template <class... _Args>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT string format(locale __loc,
__format_string_t<_Args...> __fmt,
_Args&&... __args) {
return _VSTD::vformat(_VSTD::move(__loc), __fmt.__str_,
_VSTD::make_format_args(__args...));
}
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
template <class... _Args>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT wstring
format(locale __loc, __wformat_string_t<_Args...> __fmt, _Args&&... __args) {
return _VSTD::vformat(_VSTD::move(__loc), __fmt.__str_,
_VSTD::make_wformat_args(__args...));
}
#endif
template <class _Context, class _OutIt, class _CharT>
_LIBCPP_HIDE_FROM_ABI format_to_n_result<_OutIt> __vformat_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n,
locale __loc, basic_string_view<_CharT> __fmt,
basic_format_args<_Context> __args) {
__format::__format_to_n_buffer<_OutIt, _CharT> __buffer{_VSTD::move(__out_it), __n};
_VSTD::__format::__vformat_to(
basic_format_parse_context{__fmt, __args.__size()},
_VSTD::__format_context_create(__buffer.make_output_iterator(), __args, _VSTD::move(__loc)));
return _VSTD::move(__buffer).result();
}
template <output_iterator<const char&> _OutIt, class... _Args>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT format_to_n_result<_OutIt>
format_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, locale __loc, __format_string_t<_Args...> __fmt,
_Args&&... __args) {
return _VSTD::__vformat_to_n<format_context>(_VSTD::move(__out_it), __n, _VSTD::move(__loc), __fmt.__str_,
_VSTD::make_format_args(__args...));
}
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
template <output_iterator<const wchar_t&> _OutIt, class... _Args>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT format_to_n_result<_OutIt>
format_to_n(_OutIt __out_it, iter_difference_t<_OutIt> __n, locale __loc, __wformat_string_t<_Args...> __fmt,
_Args&&... __args) {
return _VSTD::__vformat_to_n<wformat_context>(_VSTD::move(__out_it), __n, _VSTD::move(__loc), __fmt.__str_,
_VSTD::make_wformat_args(__args...));
}
#endif
template <class _CharT>
_LIBCPP_HIDE_FROM_ABI size_t __vformatted_size(locale __loc, basic_string_view<_CharT> __fmt, auto __args) {
__format::__formatted_size_buffer<_CharT> __buffer;
_VSTD::__format::__vformat_to(
basic_format_parse_context{__fmt, __args.__size()},
_VSTD::__format_context_create(__buffer.make_output_iterator(), __args, _VSTD::move(__loc)));
return _VSTD::move(__buffer).result();
}
template <class... _Args>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT size_t
formatted_size(locale __loc, __format_string_t<_Args...> __fmt, _Args&&... __args) {
return _VSTD::__vformatted_size(_VSTD::move(__loc), __fmt.__str_, basic_format_args{_VSTD::make_format_args(__args...)});
}
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
template <class... _Args>
_LIBCPP_ALWAYS_INLINE _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT size_t
formatted_size(locale __loc, __wformat_string_t<_Args...> __fmt, _Args&&... __args) {
return _VSTD::__vformatted_size(_VSTD::move(__loc), __fmt.__str_, basic_format_args{_VSTD::make_wformat_args(__args...)});
}
#endif
#endif // _LIBCPP_HAS_NO_LOCALIZATION
#endif //_LIBCPP_STD_VER > 17
_LIBCPP_END_NAMESPACE_STD
#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_FORMAT)
#endif // _LIBCPP_FORMAT
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