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_BOOL_H 11 #define _LIBCPP___FORMAT_FORMATTER_BOOL_H 12 13 #include <__algorithm/copy.h> 14 #include <__assert> 15 #include <__config> 16 #include <__format/concepts.h> 17 #include <__format/format_parse_context.h> 18 #include <__format/formatter.h> 19 #include <__format/formatter_integral.h> 20 #include <__format/parser_std_format_spec.h> 21 #include <__utility/unreachable.h> 22 23 #ifndef _LIBCPP_HAS_NO_LOCALIZATION 24 # include <__locale> 25 #endif 26 27 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 28 # pragma GCC system_header 29 #endif 30 31 _LIBCPP_BEGIN_NAMESPACE_STD 32 33 #if _LIBCPP_STD_VER >= 20 34 35 template <__fmt_char_type _CharT> 36 struct _LIBCPP_TEMPLATE_VIS formatter<bool, _CharT> { 37 public: 38 template <class _ParseContext> 39 _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { 40 typename _ParseContext::iterator __result = __parser_.__parse(__ctx, __format_spec::__fields_integral); 41 __format_spec::__process_parsed_bool(__parser_, "a bool"); 42 return __result; 43 } 44 45 template <class _FormatContext> 46 _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(bool __value, _FormatContext& __ctx) const { 47 switch (__parser_.__type_) { 48 case __format_spec::__type::__default: 49 case __format_spec::__type::__string: 50 return __formatter::__format_bool(__value, __ctx, __parser_.__get_parsed_std_specifications(__ctx)); 51 52 case __format_spec::__type::__binary_lower_case: 53 case __format_spec::__type::__binary_upper_case: 54 case __format_spec::__type::__octal: 55 case __format_spec::__type::__decimal: 56 case __format_spec::__type::__hexadecimal_lower_case: 57 case __format_spec::__type::__hexadecimal_upper_case: 58 // Promotes bool to an integral type. This reduces the number of 59 // instantiations of __format_integer reducing code size. 60 return __formatter::__format_integer( 61 static_cast<unsigned>(__value), __ctx, __parser_.__get_parsed_std_specifications(__ctx)); 62 63 default: 64 _LIBCPP_ASSERT_INTERNAL(false, "The parse function should have validated the type"); 65 __libcpp_unreachable(); 66 } 67 } 68 69 __format_spec::__parser<_CharT> __parser_; 70 }; 71 72 #endif //_LIBCPP_STD_VER >= 20 73 74 _LIBCPP_END_NAMESPACE_STD 75 76 #endif // _LIBCPP___FORMAT_FORMATTER_BOOL_H 77