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
36template <__fmt_char_type _CharT>
37struct _LIBCPP_TEMPLATE_VIS formatter<bool, _CharT> {
38public:
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_INTERNAL(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