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1// -*- C++ -*-2//===----------------------------------------------------------------------===//3//4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.5// See https://llvm.org/LICENSE.txt for license information.6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception7//8//===----------------------------------------------------------------------===//9 10#ifndef _LIBCPP___FORMAT_FORMATTER_CHAR_H11#define _LIBCPP___FORMAT_FORMATTER_CHAR_H12 13#include <__concepts/same_as.h>14#include <__config>15#include <__format/concepts.h>16#include <__format/format_parse_context.h>17#include <__format/formatter.h>18#include <__format/formatter_integral.h>19#include <__format/formatter_output.h>20#include <__format/parser_std_format_spec.h>21#include <__format/write_escaped.h>22#include <__type_traits/conditional.h>23#include <__type_traits/make_unsigned.h>24 25#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)26# pragma GCC system_header27#endif28 29_LIBCPP_BEGIN_NAMESPACE_STD30 31#if _LIBCPP_STD_VER >= 2032 33template <__fmt_char_type _CharT>34struct __formatter_char {35public:36 template <class _ParseContext>37 _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) {38 typename _ParseContext::iterator __result = __parser_.__parse(__ctx, __format_spec::__fields_integral);39 __format_spec::__process_parsed_char(__parser_, "a character");40 return __result;41 }42 43 template <class _FormatContext>44 _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(_CharT __value, _FormatContext& __ctx) const {45 if (__parser_.__type_ == __format_spec::__type::__default || __parser_.__type_ == __format_spec::__type::__char)46 return __formatter::__format_char(__value, __ctx.out(), __parser_.__get_parsed_std_specifications(__ctx));47 48# if _LIBCPP_STD_VER >= 2349 if (__parser_.__type_ == __format_spec::__type::__debug)50 return __formatter::__format_escaped_char(__value, __ctx.out(), __parser_.__get_parsed_std_specifications(__ctx));51# endif52 53 if constexpr (sizeof(_CharT) <= sizeof(unsigned))54 return __formatter::__format_integer(55 static_cast<unsigned>(static_cast<make_unsigned_t<_CharT>>(__value)),56 __ctx,57 __parser_.__get_parsed_std_specifications(__ctx));58 else59 return __formatter::__format_integer(60 static_cast<make_unsigned_t<_CharT>>(__value), __ctx, __parser_.__get_parsed_std_specifications(__ctx));61 }62 63 template <class _FormatContext>64 _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(char __value, _FormatContext& __ctx) const65 requires(same_as<_CharT, wchar_t>)66 {67 return format(static_cast<wchar_t>(static_cast<unsigned char>(__value)), __ctx);68 }69 70# if _LIBCPP_STD_VER >= 2371 _LIBCPP_HIDE_FROM_ABI constexpr void set_debug_format() { __parser_.__type_ = __format_spec::__type::__debug; }72# endif73 74 __format_spec::__parser<_CharT> __parser_;75};76 77template <>78struct formatter<char, char> : public __formatter_char<char> {};79 80# if _LIBCPP_HAS_WIDE_CHARACTERS81template <>82struct formatter<char, wchar_t> : public __formatter_char<wchar_t> {};83 84template <>85struct formatter<wchar_t, wchar_t> : public __formatter_char<wchar_t> {};86# endif // _LIBCPP_HAS_WIDE_CHARACTERS87 88# if _LIBCPP_STD_VER >= 2389template <>90inline constexpr bool enable_nonlocking_formatter_optimization<char> = true;91# if _LIBCPP_HAS_WIDE_CHARACTERS92template <>93inline constexpr bool enable_nonlocking_formatter_optimization<wchar_t> = true;94# endif // _LIBCPP_HAS_WIDE_CHARACTERS95# endif // _LIBCPP_STD_VER >= 2396 97#endif // _LIBCPP_STD_VER >= 2098 99_LIBCPP_END_NAMESPACE_STD100 101#endif // _LIBCPP___FORMAT_FORMATTER_CHAR_H102