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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_H11#define _LIBCPP___CHRONO_YEAR_H12 13#include <__chrono/duration.h>14#include <__compare/ordering.h>15#include <__config>16#include <limits>17 18#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)19# pragma GCC system_header20#endif21 22_LIBCPP_PUSH_MACROS23#include <__undef_macros>24 25#if _LIBCPP_STD_VER >= 2026 27_LIBCPP_BEGIN_NAMESPACE_STD28 29namespace chrono {30 31class year {32private:33 short __y_;34 35public:36 year() = default;37 _LIBCPP_HIDE_FROM_ABI explicit inline constexpr year(int __val) noexcept : __y_(static_cast<short>(__val)) {}38 39 _LIBCPP_HIDE_FROM_ABI inline constexpr year& operator++() noexcept {40 ++__y_;41 return *this;42 }43 _LIBCPP_HIDE_FROM_ABI inline constexpr year operator++(int) noexcept {44 year __tmp = *this;45 ++(*this);46 return __tmp;47 }48 _LIBCPP_HIDE_FROM_ABI inline constexpr year& operator--() noexcept {49 --__y_;50 return *this;51 }52 _LIBCPP_HIDE_FROM_ABI inline constexpr year operator--(int) noexcept {53 year __tmp = *this;54 --(*this);55 return __tmp;56 }57 _LIBCPP_HIDE_FROM_ABI constexpr year& operator+=(const years& __dy) noexcept;58 _LIBCPP_HIDE_FROM_ABI constexpr year& operator-=(const years& __dy) noexcept;59 _LIBCPP_HIDE_FROM_ABI inline constexpr year operator+() const noexcept { return *this; }60 _LIBCPP_HIDE_FROM_ABI inline constexpr year operator-() const noexcept { return year{-__y_}; }61 62 _LIBCPP_HIDE_FROM_ABI inline constexpr bool is_leap() const noexcept {63 return __y_ % 4 == 0 && (__y_ % 100 != 0 || __y_ % 400 == 0);64 }65 _LIBCPP_HIDE_FROM_ABI explicit inline constexpr operator int() const noexcept { return __y_; }66 _LIBCPP_HIDE_FROM_ABI constexpr bool ok() const noexcept;67 _LIBCPP_HIDE_FROM_ABI static inline constexpr year min() noexcept { return year{-32767}; }68 _LIBCPP_HIDE_FROM_ABI static inline constexpr year max() noexcept { return year{32767}; }69};70 71_LIBCPP_HIDE_FROM_ABI inline constexpr bool operator==(const year& __lhs, const year& __rhs) noexcept {72 return static_cast<int>(__lhs) == static_cast<int>(__rhs);73}74 75_LIBCPP_HIDE_FROM_ABI constexpr strong_ordering operator<=>(const year& __lhs, const year& __rhs) noexcept {76 return static_cast<int>(__lhs) <=> static_cast<int>(__rhs);77}78 79_LIBCPP_HIDE_FROM_ABI inline constexpr year operator+(const year& __lhs, const years& __rhs) noexcept {80 return year(static_cast<int>(__lhs) + __rhs.count());81}82 83_LIBCPP_HIDE_FROM_ABI inline constexpr year operator+(const years& __lhs, const year& __rhs) noexcept {84 return __rhs + __lhs;85}86 87_LIBCPP_HIDE_FROM_ABI inline constexpr year operator-(const year& __lhs, const years& __rhs) noexcept {88 return __lhs + -__rhs;89}90 91_LIBCPP_HIDE_FROM_ABI inline constexpr years operator-(const year& __lhs, const year& __rhs) noexcept {92 return years{static_cast<int>(__lhs) - static_cast<int>(__rhs)};93}94 95_LIBCPP_HIDE_FROM_ABI inline constexpr year& year::operator+=(const years& __dy) noexcept {96 *this = *this + __dy;97 return *this;98}99 100_LIBCPP_HIDE_FROM_ABI inline constexpr year& year::operator-=(const years& __dy) noexcept {101 *this = *this - __dy;102 return *this;103}104 105_LIBCPP_HIDE_FROM_ABI constexpr bool year::ok() const noexcept {106 static_assert(static_cast<int>(std::numeric_limits<decltype(__y_)>::max()) == static_cast<int>(max()));107 return static_cast<int>(min()) <= __y_;108}109 110} // namespace chrono111 112_LIBCPP_END_NAMESPACE_STD113 114#endif // _LIBCPP_STD_VER >= 20115 116_LIBCPP_POP_MACROS117 118#endif // _LIBCPP___CHRONO_YEAR_H119