| // -*- 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_FORMATTER_CHAR_H |
| #define _LIBCPP___FORMAT_FORMATTER_CHAR_H |
| |
| #include <__availability> |
| #include <__concepts/same_as.h> |
| #include <__config> |
| #include <__format/concepts.h> |
| #include <__format/format_parse_context.h> |
| #include <__format/formatter.h> |
| #include <__format/formatter_integral.h> |
| #include <__format/formatter_output.h> |
| #include <__format/parser_std_format_spec.h> |
| #include <__type_traits/conditional.h> |
| #include <__type_traits/is_signed.h> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| #if _LIBCPP_STD_VER >= 20 |
| |
| template <__fmt_char_type _CharT> |
| struct _LIBCPP_TEMPLATE_VIS __formatter_char { |
| public: |
| _LIBCPP_HIDE_FROM_ABI constexpr auto |
| parse(basic_format_parse_context<_CharT>& __parse_ctx) -> decltype(__parse_ctx.begin()) { |
| auto __result = __parser_.__parse(__parse_ctx, __format_spec::__fields_integral); |
| __format_spec::__process_parsed_char(__parser_); |
| return __result; |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI auto format(_CharT __value, auto& __ctx) const -> decltype(__ctx.out()) { |
| if (__parser_.__type_ == __format_spec::__type::__default || __parser_.__type_ == __format_spec::__type::__char) |
| return __formatter::__format_char(__value, __ctx.out(), __parser_.__get_parsed_std_specifications(__ctx)); |
| |
| # if _LIBCPP_STD_VER >= 23 |
| if (__parser_.__type_ == __format_spec::__type::__debug) |
| return __formatter::__format_escaped_char(__value, __ctx.out(), __parser_.__get_parsed_std_specifications(__ctx)); |
| # endif |
| |
| if constexpr (sizeof(_CharT) <= sizeof(int)) |
| // Promotes _CharT to an integral type. This reduces the number of |
| // instantiations of __format_integer reducing code size. |
| return __formatter::__format_integer( |
| static_cast<conditional_t<is_signed_v<_CharT>, int, unsigned>>(__value), |
| __ctx, |
| __parser_.__get_parsed_std_specifications(__ctx)); |
| else |
| return __formatter::__format_integer(__value, __ctx, __parser_.__get_parsed_std_specifications(__ctx)); |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI auto format(char __value, auto& __ctx) const -> decltype(__ctx.out()) |
| requires(same_as<_CharT, wchar_t>) |
| { |
| return format(static_cast<wchar_t>(__value), __ctx); |
| } |
| |
| # if _LIBCPP_STD_VER >= 23 |
| _LIBCPP_HIDE_FROM_ABI constexpr void set_debug_format() { __parser_.__type_ = __format_spec::__type::__debug; } |
| # endif |
| |
| __format_spec::__parser<_CharT> __parser_; |
| }; |
| |
| template <> |
| struct _LIBCPP_TEMPLATE_VIS formatter<char, char> : public __formatter_char<char> {}; |
| |
| # ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS |
| template <> |
| struct _LIBCPP_TEMPLATE_VIS formatter<char, wchar_t> : public __formatter_char<wchar_t> {}; |
| |
| template <> |
| struct _LIBCPP_TEMPLATE_VIS formatter<wchar_t, wchar_t> : public __formatter_char<wchar_t> { |
| }; |
| |
| # endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS |
| |
| #endif //_LIBCPP_STD_VER >= 20 |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP___FORMAT_FORMATTER_CHAR_H |