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123 lines
4.4 KiB
C++
123 lines
4.4 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___CHRONO_YEAR_MONTH_H
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#define _LIBCPP___CHRONO_YEAR_MONTH_H
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#include <__chrono/duration.h>
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#include <__chrono/month.h>
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#include <__chrono/year.h>
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#include <__config>
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#include <compare>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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#if _LIBCPP_STD_VER >= 20
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_LIBCPP_BEGIN_NAMESPACE_STD
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namespace chrono {
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class year_month {
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chrono::year __y_;
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chrono::month __m_;
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public:
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year_month() = default;
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_LIBCPP_HIDE_FROM_ABI constexpr year_month(const chrono::year& __yval, const chrono::month& __mval) noexcept
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: __y_{__yval}, __m_{__mval} {}
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_LIBCPP_HIDE_FROM_ABI inline constexpr chrono::year year() const noexcept { return __y_; }
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_LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m_; }
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_LIBCPP_HIDE_FROM_ABI inline constexpr year_month& operator+=(const months& __dm) noexcept;
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_LIBCPP_HIDE_FROM_ABI inline constexpr year_month& operator-=(const months& __dm) noexcept;
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_LIBCPP_HIDE_FROM_ABI inline constexpr year_month& operator+=(const years& __dy) noexcept;
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_LIBCPP_HIDE_FROM_ABI inline constexpr year_month& operator-=(const years& __dy) noexcept;
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_LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __y_.ok() && __m_.ok(); }
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};
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_LIBCPP_HIDE_FROM_ABI inline constexpr year_month operator/(const year& __y, const month& __m) noexcept {
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return year_month{__y, __m};
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year_month operator/(const year& __y, int __m) noexcept {
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return year_month{__y, month(__m)};
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr bool operator==(const year_month& __lhs, const year_month& __rhs) noexcept {
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return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month();
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr strong_ordering
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operator<=>(const year_month& __lhs, const year_month& __rhs) noexcept {
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if (auto __c = __lhs.year() <=> __rhs.year(); __c != 0)
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return __c;
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return __lhs.month() <=> __rhs.month();
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year_month operator+(const year_month& __lhs, const months& __rhs) noexcept {
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int __dmi = static_cast<int>(static_cast<unsigned>(__lhs.month())) - 1 + __rhs.count();
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const int __dy = (__dmi >= 0 ? __dmi : __dmi - 11) / 12;
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__dmi = __dmi - __dy * 12 + 1;
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return (__lhs.year() + years(__dy)) / month(static_cast<unsigned>(__dmi));
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year_month operator+(const months& __lhs, const year_month& __rhs) noexcept {
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return __rhs + __lhs;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year_month operator+(const year_month& __lhs, const years& __rhs) noexcept {
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return (__lhs.year() + __rhs) / __lhs.month();
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year_month operator+(const years& __lhs, const year_month& __rhs) noexcept {
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return __rhs + __lhs;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr months operator-(const year_month& __lhs, const year_month& __rhs) noexcept {
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return (__lhs.year() - __rhs.year()) +
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months(static_cast<unsigned>(__lhs.month()) - static_cast<unsigned>(__rhs.month()));
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year_month operator-(const year_month& __lhs, const months& __rhs) noexcept {
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return __lhs + -__rhs;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year_month operator-(const year_month& __lhs, const years& __rhs) noexcept {
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return __lhs + -__rhs;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year_month& year_month::operator+=(const months& __dm) noexcept {
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*this = *this + __dm;
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return *this;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year_month& year_month::operator-=(const months& __dm) noexcept {
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*this = *this - __dm;
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return *this;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year_month& year_month::operator+=(const years& __dy) noexcept {
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*this = *this + __dy;
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return *this;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year_month& year_month::operator-=(const years& __dy) noexcept {
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*this = *this - __dy;
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return *this;
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}
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} // namespace chrono
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_STD_VER >= 20
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#endif // _LIBCPP___CHRONO_YEAR_MONTH_H
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