diff options
Diffstat (limited to 'libcxx/include/__format/format_functions.h')
| -rw-r--r-- | libcxx/include/__format/format_functions.h | 661 |
1 files changed, 661 insertions, 0 deletions
diff --git a/libcxx/include/__format/format_functions.h b/libcxx/include/__format/format_functions.h new file mode 100644 index 000000000000..185148ccba53 --- /dev/null +++ b/libcxx/include/__format/format_functions.h @@ -0,0 +1,661 @@ +// -*- 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_FORMAT_FUNCTIONS +#define _LIBCPP___FORMAT_FORMAT_FUNCTIONS + +// TODO FMT This is added to fix Apple back-deployment. +#include <version> +#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_FORMAT) + +#include <__algorithm/clamp.h> +#include <__availability> +#include <__concepts/convertible_to.h> +#include <__concepts/same_as.h> +#include <__config> +#include <__debug> +#include <__format/buffer.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_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 <string> +#include <string_view> + +#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 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>&) { std::__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_) + std::__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_) + std::__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: + std::__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 (__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_)); +} + +// This function is not user facing, so it can directly use the non-standard types of the "variant". +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: + std::__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 + std::__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 + std::__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: + std::__throw_format_error("Handle should use __compile_time_validate_handle_argument"); + } + std::__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: + std::__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>) + std::__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('}')) + std::__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) + std::__throw_format_error("The format string terminates at a '{'"); + + if (*__begin != _CharT('{')) [[likely]] { + __ctx.advance_to(_VSTD::move(__out_it)); + __begin = + __format::__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('}')) + std::__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 { + 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)}); + } + + _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT constexpr basic_string_view<_CharT> get() const noexcept { + return __str_; + } + +private: + basic_string_view<_CharT> __str_; + + 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 = basic_format_string<char, type_identity_t<_Args>...>; + +#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS +template <class... _Args> +using wformat_string = 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_it(); + } +} + +// 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<_Args...> __fmt, _Args&&... __args) { + return _VSTD::vformat_to(_VSTD::move(__out_it), __fmt.get(), + _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<_Args...> __fmt, _Args&&... __args) { + return _VSTD::vformat_to(_VSTD::move(__out_it), __fmt.get(), + _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<_Args...> __fmt, + _Args&&... __args) { + return _VSTD::vformat(__fmt.get(), _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<_Args...> __fmt, _Args&&... __args) { + return _VSTD::vformat(__fmt.get(), _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<_Args...> __fmt, _Args&&... __args) { + return _VSTD::__vformat_to_n<format_context>(_VSTD::move(__out_it), __n, __fmt.get(), _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<_Args...> __fmt, + _Args&&... __args) { + return _VSTD::__vformat_to_n<wformat_context>(_VSTD::move(__out_it), __n, __fmt.get(), _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<_Args...> __fmt, _Args&&... __args) { + return _VSTD::__vformatted_size(__fmt.get(), 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<_Args...> __fmt, _Args&&... __args) { + return _VSTD::__vformatted_size(__fmt.get(), 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_it(); + } +} + +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<_Args...> __fmt, _Args&&... __args) { + return _VSTD::vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt.get(), + _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<_Args...> __fmt, _Args&&... __args) { + return _VSTD::vformat_to(_VSTD::move(__out_it), _VSTD::move(__loc), __fmt.get(), + _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<_Args...> __fmt, + _Args&&... __args) { + return _VSTD::vformat(_VSTD::move(__loc), __fmt.get(), + _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<_Args...> __fmt, _Args&&... __args) { + return _VSTD::vformat(_VSTD::move(__loc), __fmt.get(), + _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<_Args...> __fmt, + _Args&&... __args) { + return _VSTD::__vformat_to_n<format_context>(_VSTD::move(__out_it), __n, _VSTD::move(__loc), __fmt.get(), + _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<_Args...> __fmt, + _Args&&... __args) { + return _VSTD::__vformat_to_n<wformat_context>(_VSTD::move(__out_it), __n, _VSTD::move(__loc), __fmt.get(), + _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<_Args...> __fmt, _Args&&... __args) { + return _VSTD::__vformatted_size(_VSTD::move(__loc), __fmt.get(), 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<_Args...> __fmt, _Args&&... __args) { + return _VSTD::__vformatted_size(_VSTD::move(__loc), __fmt.get(), 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_FORMAT_FUNCTIONS |