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___CHRONO_MONTHDAY_H
11#define _LIBCPP___CHRONO_MONTHDAY_H
12
13#include <__chrono/calendar.h>
14#include <__chrono/day.h>
15#include <__chrono/month.h>
16#include <__compare/ordering.h>
17#include <__config>
18#include <__cstddef/size_t.h>
19#include <__functional/hash.h>
20
21#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
22# pragma GCC system_header
23#endif
24
25#if _LIBCPP_STD_VER >= 20
26
27_LIBCPP_BEGIN_NAMESPACE_STD
28
29namespace chrono {
30
31class month_day {
32private:
33 chrono::month __m_;
34 chrono::day __d_;
35
36public:
37 month_day() = default;
38 constexpr month_day(const chrono::month& __mval, const chrono::day& __dval) noexcept : __m_{__mval}, __d_{__dval} {}
39 [[nodiscard]] inline constexpr chrono::month month() const noexcept { return __m_; }
40 [[nodiscard]] inline constexpr chrono::day day() const noexcept { return __d_; }
41 [[nodiscard]] constexpr bool ok() const noexcept;
42};
43
44inline constexpr bool month_day::ok() const noexcept {
45 if (!__m_.ok())
46 return false;
47 const unsigned __dval = static_cast<unsigned>(__d_);
48 if (__dval < 1 || __dval > 31)
49 return false;
50 if (__dval <= 29)
51 return true;
52 // Now we've got either 30 or 31
53 const unsigned __mval = static_cast<unsigned>(__m_);
54 if (__mval == 2)
55 return false;
56 if (__mval == 4 || __mval == 6 || __mval == 9 || __mval == 11)
57 return __dval == 30;
58 return true;
59}
60
61inline constexpr bool operator==(const month_day& __lhs, const month_day& __rhs) noexcept {
62 return __lhs.month() == __rhs.month() && __lhs.day() == __rhs.day();
63}
64
65inline constexpr strong_ordering operator<=>(const month_day& __lhs, const month_day& __rhs) noexcept {
66 if (auto __c = __lhs.month() <=> __rhs.month(); __c != 0)
67 return __c;
68 return __lhs.day() <=> __rhs.day();
69}
70
71[[nodiscard]] inline constexpr month_day operator/(const month& __lhs, const day& __rhs) noexcept {
72 return month_day{__lhs, __rhs};
73}
74
75[[nodiscard]] inline constexpr month_day operator/(const day& __lhs, const month& __rhs) noexcept {
76 return __rhs / __lhs;
77}
78
79[[nodiscard]] inline constexpr month_day operator/(const month& __lhs, int __rhs) noexcept {
80 return __lhs / day(__rhs);
81}
82
83[[nodiscard]] inline constexpr month_day operator/(int __lhs, const day& __rhs) noexcept {
84 return month(__lhs) / __rhs;
85}
86
87[[nodiscard]] inline constexpr month_day operator/(const day& __lhs, int __rhs) noexcept {
88 return month(__rhs) / __lhs;
89}
90
91class month_day_last {
92private:
93 chrono::month __m_;
94
95public:
96 explicit constexpr month_day_last(const chrono::month& __val) noexcept : __m_{__val} {}
97 [[nodiscard]] inline constexpr chrono::month month() const noexcept { return __m_; }
98 [[nodiscard]] inline constexpr bool ok() const noexcept { return __m_.ok(); }
99};
100
101inline constexpr bool operator==(const month_day_last& __lhs, const month_day_last& __rhs) noexcept {
102 return __lhs.month() == __rhs.month();
103}
104
105inline constexpr strong_ordering operator<=>(const month_day_last& __lhs, const month_day_last& __rhs) noexcept {
106 return __lhs.month() <=> __rhs.month();
107}
108
109[[nodiscard]] inline constexpr month_day_last operator/(const month& __lhs, last_spec) noexcept {
110 return month_day_last{__lhs};
111}
112
113[[nodiscard]] inline constexpr month_day_last operator/(last_spec, const month& __rhs) noexcept {
114 return month_day_last{__rhs};
115}
116
117[[nodiscard]] inline constexpr month_day_last operator/(int __lhs, last_spec) noexcept {
118 return month_day_last{month(__lhs)};
119}
120
121[[nodiscard]] inline constexpr month_day_last operator/(last_spec, int __rhs) noexcept {
122 return month_day_last{month(__rhs)};
123}
124
125} // namespace chrono
126
127# if _LIBCPP_STD_VER >= 26
128
129template <>
130struct hash<chrono::month_day> {
131 [[nodiscard]] static size_t operator()(const chrono::month_day& __md) noexcept {
132 return std::__hash_combine(lhs: hash<chrono::month>{}(__md.month()), rhs: hash<chrono::day>{}(__md.day()));
133 }
134};
135
136template <>
137struct hash<chrono::month_day_last> {
138 [[nodiscard]] static size_t operator()(const chrono::month_day_last& __mdl) noexcept {
139 return hash<chrono::month>{}(__mdl.month());
140 }
141};
142
143# endif // _LIBCPP_STD_VER >= 26
144
145_LIBCPP_END_NAMESPACE_STD
146
147#endif // _LIBCPP_STD_VER >= 20
148
149#endif // _LIBCPP___CHRONO_MONTHDAY_H
150