79 lines
2.6 KiB
C++
79 lines
2.6 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___FORMAT_FORMATTER_BOOL_H
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#define _LIBCPP___FORMAT_FORMATTER_BOOL_H
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#include <__algorithm/copy.h>
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#include <__availability>
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#include <__config>
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#include <__debug>
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#include <__format/format_error.h>
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#include <__format/format_fwd.h>
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#include <__format/format_parse_context.h>
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#include <__format/formatter.h>
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#include <__format/formatter_integral.h>
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#include <__format/parser_std_format_spec.h>
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#include <__utility/unreachable.h>
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#include <string_view>
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#ifndef _LIBCPP_HAS_NO_LOCALIZATION
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# include <locale>
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#endif
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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#if _LIBCPP_STD_VER > 17
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template <__formatter::__char_type _CharT>
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struct _LIBCPP_TEMPLATE_VIS _LIBCPP_AVAILABILITY_FORMAT formatter<bool, _CharT> {
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public:
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_LIBCPP_HIDE_FROM_ABI constexpr auto
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parse(basic_format_parse_context<_CharT>& __parse_ctx) -> decltype(__parse_ctx.begin()) {
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auto __result = __parser_.__parse(__parse_ctx, __format_spec::__fields_integral);
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__format_spec::__process_parsed_bool(__parser_);
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return __result;
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}
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_LIBCPP_HIDE_FROM_ABI auto format(bool __value, auto& __ctx) const -> decltype(__ctx.out()) {
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switch (__parser_.__type_) {
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case __format_spec::__type::__default:
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case __format_spec::__type::__string:
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return __formatter::__format_bool(__value, __ctx, __parser_.__get_parsed_std_specifications(__ctx));
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case __format_spec::__type::__binary_lower_case:
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case __format_spec::__type::__binary_upper_case:
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case __format_spec::__type::__octal:
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case __format_spec::__type::__decimal:
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case __format_spec::__type::__hexadecimal_lower_case:
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case __format_spec::__type::__hexadecimal_upper_case:
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// Promotes bool to an integral type. This reduces the number of
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// instantiations of __format_integer reducing code size.
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return __formatter::__format_integer(
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static_cast<unsigned>(__value), __ctx, __parser_.__get_parsed_std_specifications(__ctx));
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default:
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_LIBCPP_ASSERT(false, "The parse function should have validated the type");
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__libcpp_unreachable();
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}
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}
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__format_spec::__parser<_CharT> __parser_;
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};
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#endif //_LIBCPP_STD_VER > 17
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___FORMAT_FORMATTER_BOOL_H
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