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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_INTEGER_H
11#define _LIBCPP___FORMAT_FORMATTER_INTEGER_H
12
13#include <__concepts/arithmetic.h>
14#include <__config>
15#include <__format/concepts.h>
16#include <__format/format_parse_context.h>
17#include <__format/formatter.h>
18#include <__format/formatter_integral.h>
19#include <__format/formatter_output.h>
20#include <__format/parser_std_format_spec.h>
21#include <__type_traits/is_void.h>
22#include <__type_traits/make_32_64_or_128_bit.h>
23
24#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
25# pragma GCC system_header
26#endif
27
28_LIBCPP_BEGIN_NAMESPACE_STD
29
30#if _LIBCPP_STD_VER >= 20
31
32template <__fmt_char_type _CharT>
33struct __formatter_integer {
34public:
35 template <class _ParseContext>
36 _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) {
37 typename _ParseContext::iterator __result = __parser_.__parse(__ctx, __format_spec::__fields_integral);
38 __format_spec::__process_parsed_integer(__parser_, "an integer");
39 return __result;
40 }
41
42 template <integral _Tp, class _FormatContext>
43 _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(_Tp __value, _FormatContext& __ctx) const {
44 __format_spec::__parsed_specifications<_CharT> __specs = __parser_.__get_parsed_std_specifications(__ctx);
45
46 if (__specs.__std_.__type_ == __format_spec::__type::__char)
47 return __formatter::__format_char(__value, __ctx.out(), __specs);
48
49 using _Type = __make_32_64_or_128_bit_t<_Tp>;
50 static_assert(!is_void<_Type>::value, "unsupported integral type used in __formatter_integer::__format");
51
52 // Reduce the number of instantiation of the integer formatter
53 return __formatter::__format_integer(static_cast<_Type>(__value), __ctx, __specs);
54 }
55
56 __format_spec::__parser<_CharT> __parser_;
57};
58
59// Signed integral types.
60template <__fmt_char_type _CharT>
61struct formatter<signed char, _CharT> : public __formatter_integer<_CharT> {};
62template <__fmt_char_type _CharT>
63struct formatter<short, _CharT> : public __formatter_integer<_CharT> {};
64template <__fmt_char_type _CharT>
65struct formatter<int, _CharT> : public __formatter_integer<_CharT> {};
66template <__fmt_char_type _CharT>
67struct formatter<long, _CharT> : public __formatter_integer<_CharT> {};
68template <__fmt_char_type _CharT>
69struct formatter<long long, _CharT> : public __formatter_integer<_CharT> {};
70# if _LIBCPP_HAS_INT128
71template <__fmt_char_type _CharT>
72struct formatter<__int128_t, _CharT> : public __formatter_integer<_CharT> {};
73# endif
74
75// Unsigned integral types.
76template <__fmt_char_type _CharT>
77struct formatter<unsigned char, _CharT> : public __formatter_integer<_CharT> {};
78template <__fmt_char_type _CharT>
79struct formatter<unsigned short, _CharT> : public __formatter_integer<_CharT> {};
80template <__fmt_char_type _CharT>
81struct formatter<unsigned, _CharT> : public __formatter_integer<_CharT> {};
82template <__fmt_char_type _CharT>
83struct formatter<unsigned long, _CharT> : public __formatter_integer<_CharT> {};
84template <__fmt_char_type _CharT>
85struct formatter<unsigned long long, _CharT> : public __formatter_integer<_CharT> {};
86# if _LIBCPP_HAS_INT128
87template <__fmt_char_type _CharT>
88struct formatter<__uint128_t, _CharT> : public __formatter_integer<_CharT> {};
89# endif
90
91# if _LIBCPP_STD_VER >= 23
92template <>
93inline constexpr bool enable_nonlocking_formatter_optimization<signed char> = true;
94template <>
95inline constexpr bool enable_nonlocking_formatter_optimization<short> = true;
96template <>
97inline constexpr bool enable_nonlocking_formatter_optimization<int> = true;
98template <>
99inline constexpr bool enable_nonlocking_formatter_optimization<long> = true;
100template <>
101inline constexpr bool enable_nonlocking_formatter_optimization<long long> = true;
102# if _LIBCPP_HAS_INT128
103template <>
104inline constexpr bool enable_nonlocking_formatter_optimization<__int128_t> = true;
105# endif
106
107template <>
108inline constexpr bool enable_nonlocking_formatter_optimization<unsigned char> = true;
109template <>
110inline constexpr bool enable_nonlocking_formatter_optimization<unsigned short> = true;
111template <>
112inline constexpr bool enable_nonlocking_formatter_optimization<unsigned> = true;
113template <>
114inline constexpr bool enable_nonlocking_formatter_optimization<unsigned long> = true;
115template <>
116inline constexpr bool enable_nonlocking_formatter_optimization<unsigned long long> = true;
117# if _LIBCPP_HAS_INT128
118template <>
119inline constexpr bool enable_nonlocking_formatter_optimization<__uint128_t> = true;
120# endif
121# endif // _LIBCPP_STD_VER >= 23
122#endif // _LIBCPP_STD_VER >= 20
123
124_LIBCPP_END_NAMESPACE_STD
125
126#endif // _LIBCPP___FORMAT_FORMATTER_INTEGER_H
127

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source code of libcxx/include/__format/formatter_integer.h