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 <__availability> 16 #include <__config> 17 #include <__format/concepts.h> 18 #include <__format/format_parse_context.h> 19 #include <__format/formatter.h> 20 #include <__format/formatter_integral.h> 21 #include <__format/parser_std_format_spec.h> 22 #include <__utility/unreachable.h> 23 24 #ifndef _LIBCPP_HAS_NO_LOCALIZATION 25 # include <locale> 26 #endif 27 28 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 29 # pragma GCC system_header 30 #endif 31 32 _LIBCPP_BEGIN_NAMESPACE_STD 33 34 #if _LIBCPP_STD_VER >= 20 35 36 template <__fmt_char_type _CharT> 37 struct _LIBCPP_TEMPLATE_VIS formatter<bool, _CharT> { 38 public: 39 template <class _ParseContext> 40 _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { 41 typename _ParseContext::iterator __result = __parser_.__parse(__ctx, __format_spec::__fields_integral); 42 __format_spec::__process_parsed_bool(__parser_, "a bool"); 43 return __result; 44 } 45 46 template <class _FormatContext> 47 _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(bool __value, _FormatContext& __ctx) const { 48 switch (__parser_.__type_) { 49 case __format_spec::__type::__default: 50 case __format_spec::__type::__string: 51 return __formatter::__format_bool(__value, __ctx, __parser_.__get_parsed_std_specifications(__ctx)); 52 53 case __format_spec::__type::__binary_lower_case: 54 case __format_spec::__type::__binary_upper_case: 55 case __format_spec::__type::__octal: 56 case __format_spec::__type::__decimal: 57 case __format_spec::__type::__hexadecimal_lower_case: 58 case __format_spec::__type::__hexadecimal_upper_case: 59 // Promotes bool to an integral type. This reduces the number of 60 // instantiations of __format_integer reducing code size. 61 return __formatter::__format_integer( 62 static_cast<unsigned>(__value), __ctx, __parser_.__get_parsed_std_specifications(__ctx)); 63 64 default: 65 _LIBCPP_ASSERT_UNCATEGORIZED(false, "The parse function should have validated the type"); 66 __libcpp_unreachable(); 67 } 68 } 69 70 __format_spec::__parser<_CharT> __parser_; 71 }; 72 73 #endif //_LIBCPP_STD_VER >= 20 74 75 _LIBCPP_END_NAMESPACE_STD 76 77 #endif // _LIBCPP___FORMAT_FORMATTER_BOOL_H 78