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