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
 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