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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-exception |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #ifndef _LIBCPP___FORMAT_FORMATTER_CHAR_H |
| 11 | #define _LIBCPP___FORMAT_FORMATTER_CHAR_H |
| 12 | |
| 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_header |
| 27 | #endif |
| 28 | |
| 29 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 30 | |
| 31 | #if _LIBCPP_STD_VER >= 20 |
| 32 | |
| 33 | template <__fmt_char_type _CharT> |
| 34 | struct __formatter_char { |
| 35 | public: |
| 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 >= 23 |
| 49 | if (__parser_.__type_ == __format_spec::__type::__debug) |
| 50 | return __formatter::__format_escaped_char(__value, __ctx.out(), __parser_.__get_parsed_std_specifications(__ctx)); |
| 51 | # endif |
| 52 | |
| 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 | else |
| 59 | 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) const |
| 65 | 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 >= 23 |
| 71 | _LIBCPP_HIDE_FROM_ABI constexpr void set_debug_format() { __parser_.__type_ = __format_spec::__type::__debug; } |
| 72 | # endif |
| 73 | |
| 74 | __format_spec::__parser<_CharT> __parser_; |
| 75 | }; |
| 76 | |
| 77 | template <> |
| 78 | struct formatter<char, char> : public __formatter_char<char> {}; |
| 79 | |
| 80 | # if _LIBCPP_HAS_WIDE_CHARACTERS |
| 81 | template <> |
| 82 | struct formatter<char, wchar_t> : public __formatter_char<wchar_t> {}; |
| 83 | |
| 84 | template <> |
| 85 | struct formatter<wchar_t, wchar_t> : public __formatter_char<wchar_t> {}; |
| 86 | # endif // _LIBCPP_HAS_WIDE_CHARACTERS |
| 87 | |
| 88 | # if _LIBCPP_STD_VER >= 23 |
| 89 | template <> |
| 90 | inline constexpr bool enable_nonlocking_formatter_optimization<char> = true; |
| 91 | # if _LIBCPP_HAS_WIDE_CHARACTERS |
| 92 | template <> |
| 93 | inline constexpr bool enable_nonlocking_formatter_optimization<wchar_t> = true; |
| 94 | # endif // _LIBCPP_HAS_WIDE_CHARACTERS |
| 95 | # endif // _LIBCPP_STD_VER >= 23 |
| 96 | |
| 97 | #endif // _LIBCPP_STD_VER >= 20 |
| 98 | |
| 99 | _LIBCPP_END_NAMESPACE_STD |
| 100 | |
| 101 | #endif // _LIBCPP___FORMAT_FORMATTER_CHAR_H |
| 102 |
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