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 <__config>
17#include <compare>
18
19#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
20# pragma GCC system_header
21#endif
22
23#if _LIBCPP_STD_VER >= 20
24
25_LIBCPP_BEGIN_NAMESPACE_STD
26
27namespace chrono {
28
29class month_day {
30private:
31 chrono::month __m_;
32 chrono::day __d_;
33
34public:
35 month_day() = default;
36 _LIBCPP_HIDE_FROM_ABI constexpr month_day(const chrono::month& __mval, const chrono::day& __dval) noexcept
37 : __m_{__mval}, __d_{__dval} {}
38 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; }
39 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::day day() const noexcept { return __d_; }
40 _LIBCPP_HIDE_FROM_ABI constexpr bool ok() const noexcept;
41};
42
43_LIBCPP_HIDE_FROM_ABI inline constexpr bool month_day::ok() const noexcept {
44 if (!__m_.ok())
45 return false;
46 const unsigned __dval = static_cast<unsigned>(__d_);
47 if (__dval < 1 || __dval > 31)
48 return false;
49 if (__dval <= 29)
50 return true;
51 // Now we've got either 30 or 31
52 const unsigned __mval = static_cast<unsigned>(__m_);
53 if (__mval == 2)
54 return false;
55 if (__mval == 4 || __mval == 6 || __mval == 9 || __mval == 11)
56 return __dval == 30;
57 return true;
58}
59
60_LIBCPP_HIDE_FROM_ABI inline constexpr bool operator==(const month_day& __lhs, const month_day& __rhs) noexcept {
61 return __lhs.month() == __rhs.month() && __lhs.day() == __rhs.day();
62}
63
64_LIBCPP_HIDE_FROM_ABI inline constexpr strong_ordering
65operator<=>(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_LIBCPP_HIDE_FROM_ABI inline constexpr month_day operator/(const month& __lhs, const day& __rhs) noexcept {
72 return month_day{__lhs, __rhs};
73}
74
75_LIBCPP_HIDE_FROM_ABI inline constexpr month_day operator/(const day& __lhs, const month& __rhs) noexcept {
76 return __rhs / __lhs;
77}
78
79_LIBCPP_HIDE_FROM_ABI inline constexpr month_day operator/(const month& __lhs, int __rhs) noexcept {
80 return __lhs / day(__rhs);
81}
82
83_LIBCPP_HIDE_FROM_ABI inline constexpr month_day operator/(int __lhs, const day& __rhs) noexcept {
84 return month(__lhs) / __rhs;
85}
86
87_LIBCPP_HIDE_FROM_ABI 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 _LIBCPP_HIDE_FROM_ABI explicit constexpr month_day_last(const chrono::month& __val) noexcept : __m_{__val} {}
97 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; }
98 _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __m_.ok(); }
99};
100
101_LIBCPP_HIDE_FROM_ABI inline constexpr bool
102operator==(const month_day_last& __lhs, const month_day_last& __rhs) noexcept {
103 return __lhs.month() == __rhs.month();
104}
105
106_LIBCPP_HIDE_FROM_ABI inline constexpr strong_ordering
107operator<=>(const month_day_last& __lhs, const month_day_last& __rhs) noexcept {
108 return __lhs.month() <=> __rhs.month();
109}
110
111_LIBCPP_HIDE_FROM_ABI inline constexpr month_day_last operator/(const month& __lhs, last_spec) noexcept {
112 return month_day_last{__lhs};
113}
114
115_LIBCPP_HIDE_FROM_ABI inline constexpr month_day_last operator/(last_spec, const month& __rhs) noexcept {
116 return month_day_last{__rhs};
117}
118
119_LIBCPP_HIDE_FROM_ABI inline constexpr month_day_last operator/(int __lhs, last_spec) noexcept {
120 return month_day_last{month(__lhs)};
121}
122
123_LIBCPP_HIDE_FROM_ABI inline constexpr month_day_last operator/(last_spec, int __rhs) noexcept {
124 return month_day_last{month(__rhs)};
125}
126
127} // namespace chrono
128
129_LIBCPP_END_NAMESPACE_STD
130
131#endif // _LIBCPP_STD_VER >= 20
132
133#endif // _LIBCPP___CHRONO_MONTHDAY_H
134