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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-exception7//8//===----------------------------------------------------------------------===//9 10#ifndef _LIBCPP___CHRONO_YEAR_MONTH_H11#define _LIBCPP___CHRONO_YEAR_MONTH_H12 13#include <__chrono/duration.h>14#include <__chrono/month.h>15#include <__chrono/year.h>16#include <__compare/ordering.h>17#include <__config>18 19#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)20# pragma GCC system_header21#endif22 23#if _LIBCPP_STD_VER >= 2024 25_LIBCPP_BEGIN_NAMESPACE_STD26 27namespace chrono {28 29class year_month {30 chrono::year __y_;31 chrono::month __m_;32 33public:34 year_month() = default;35 _LIBCPP_HIDE_FROM_ABI constexpr year_month(const chrono::year& __yval, const chrono::month& __mval) noexcept36 : __y_{__yval}, __m_{__mval} {}37 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::year year() const noexcept { return __y_; }38 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; }39 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month& operator+=(const months& __dm) noexcept;40 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month& operator-=(const months& __dm) noexcept;41 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month& operator+=(const years& __dy) noexcept;42 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month& operator-=(const years& __dy) noexcept;43 _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __y_.ok() && __m_.ok(); }44};45 46_LIBCPP_HIDE_FROM_ABI inline constexpr year_month operator/(const year& __y, const month& __m) noexcept {47 return year_month{__y, __m};48}49 50_LIBCPP_HIDE_FROM_ABI inline constexpr year_month operator/(const year& __y, int __m) noexcept {51 return year_month{__y, month(__m)};52}53 54_LIBCPP_HIDE_FROM_ABI inline constexpr bool operator==(const year_month& __lhs, const year_month& __rhs) noexcept {55 return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month();56}57 58_LIBCPP_HIDE_FROM_ABI inline constexpr strong_ordering59operator<=>(const year_month& __lhs, const year_month& __rhs) noexcept {60 if (auto __c = __lhs.year() <=> __rhs.year(); __c != 0)61 return __c;62 return __lhs.month() <=> __rhs.month();63}64 65_LIBCPP_HIDE_FROM_ABI inline constexpr year_month operator+(const year_month& __lhs, const months& __rhs) noexcept {66 int __dmi = static_cast<int>(static_cast<unsigned>(__lhs.month())) - 1 + __rhs.count();67 const int __dy = (__dmi >= 0 ? __dmi : __dmi - 11) / 12;68 __dmi = __dmi - __dy * 12 + 1;69 return (__lhs.year() + years(__dy)) / month(static_cast<unsigned>(__dmi));70}71 72_LIBCPP_HIDE_FROM_ABI inline constexpr year_month operator+(const months& __lhs, const year_month& __rhs) noexcept {73 return __rhs + __lhs;74}75 76_LIBCPP_HIDE_FROM_ABI inline constexpr year_month operator+(const year_month& __lhs, const years& __rhs) noexcept {77 return (__lhs.year() + __rhs) / __lhs.month();78}79 80_LIBCPP_HIDE_FROM_ABI inline constexpr year_month operator+(const years& __lhs, const year_month& __rhs) noexcept {81 return __rhs + __lhs;82}83 84_LIBCPP_HIDE_FROM_ABI inline constexpr months operator-(const year_month& __lhs, const year_month& __rhs) noexcept {85 return (__lhs.year() - __rhs.year()) +86 months(static_cast<unsigned>(__lhs.month()) - static_cast<unsigned>(__rhs.month()));87}88 89_LIBCPP_HIDE_FROM_ABI inline constexpr year_month operator-(const year_month& __lhs, const months& __rhs) noexcept {90 return __lhs + -__rhs;91}92 93_LIBCPP_HIDE_FROM_ABI inline constexpr year_month operator-(const year_month& __lhs, const years& __rhs) noexcept {94 return __lhs + -__rhs;95}96 97_LIBCPP_HIDE_FROM_ABI inline constexpr year_month& year_month::operator+=(const months& __dm) noexcept {98 *this = *this + __dm;99 return *this;100}101 102_LIBCPP_HIDE_FROM_ABI inline constexpr year_month& year_month::operator-=(const months& __dm) noexcept {103 *this = *this - __dm;104 return *this;105}106 107_LIBCPP_HIDE_FROM_ABI inline constexpr year_month& year_month::operator+=(const years& __dy) noexcept {108 *this = *this + __dy;109 return *this;110}111 112_LIBCPP_HIDE_FROM_ABI inline constexpr year_month& year_month::operator-=(const years& __dy) noexcept {113 *this = *this - __dy;114 return *this;115}116 117} // namespace chrono118 119_LIBCPP_END_NAMESPACE_STD120 121#endif // _LIBCPP_STD_VER >= 20122 123#endif // _LIBCPP___CHRONO_YEAR_MONTH_H124