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118 lines
3.7 KiB
C++
118 lines
3.7 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_H
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#define _LIBCPP___CHRONO_YEAR_H
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#include <__chrono/duration.h>
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#include <__config>
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#include <compare>
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#include <limits>
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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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_LIBCPP_PUSH_MACROS
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#include <__undef_macros>
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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 {
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private:
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short __y_;
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public:
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year() = default;
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_LIBCPP_HIDE_FROM_ABI explicit inline constexpr year(int __val) noexcept : __y_(static_cast<short>(__val)) {}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year& operator++() noexcept {
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++__y_;
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return *this;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year operator++(int) noexcept {
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year __tmp = *this;
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++(*this);
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return __tmp;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year& operator--() noexcept {
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--__y_;
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return *this;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year operator--(int) noexcept {
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year __tmp = *this;
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--(*this);
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return __tmp;
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}
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_LIBCPP_HIDE_FROM_ABI constexpr year& operator+=(const years& __dy) noexcept;
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_LIBCPP_HIDE_FROM_ABI constexpr year& operator-=(const years& __dy) noexcept;
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_LIBCPP_HIDE_FROM_ABI inline constexpr year operator+() const noexcept { return *this; }
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_LIBCPP_HIDE_FROM_ABI inline constexpr year operator-() const noexcept { return year{-__y_}; }
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_LIBCPP_HIDE_FROM_ABI inline constexpr bool is_leap() const noexcept {
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return __y_ % 4 == 0 && (__y_ % 100 != 0 || __y_ % 400 == 0);
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}
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_LIBCPP_HIDE_FROM_ABI explicit inline constexpr operator int() const noexcept { return __y_; }
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_LIBCPP_HIDE_FROM_ABI constexpr bool ok() const noexcept;
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_LIBCPP_HIDE_FROM_ABI static inline constexpr year min() noexcept { return year{-32767}; }
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_LIBCPP_HIDE_FROM_ABI static inline constexpr year max() noexcept { return year{32767}; }
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};
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_LIBCPP_HIDE_FROM_ABI inline constexpr bool operator==(const year& __lhs, const year& __rhs) noexcept {
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return static_cast<int>(__lhs) == static_cast<int>(__rhs);
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}
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_LIBCPP_HIDE_FROM_ABI constexpr strong_ordering operator<=>(const year& __lhs, const year& __rhs) noexcept {
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return static_cast<int>(__lhs) <=> static_cast<int>(__rhs);
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year operator+(const year& __lhs, const years& __rhs) noexcept {
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return year(static_cast<int>(__lhs) + __rhs.count());
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year operator+(const years& __lhs, const year& __rhs) noexcept {
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return __rhs + __lhs;
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year operator-(const year& __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 years operator-(const year& __lhs, const year& __rhs) noexcept {
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return years{static_cast<int>(__lhs) - static_cast<int>(__rhs)};
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}
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_LIBCPP_HIDE_FROM_ABI inline constexpr year& year::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& year::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 constexpr bool year::ok() const noexcept {
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static_assert(static_cast<int>(std::numeric_limits<decltype(__y_)>::max()) == static_cast<int>(max()));
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return static_cast<int>(min()) <= __y_;
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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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_LIBCPP_POP_MACROS
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#endif // _LIBCPP___CHRONO_YEAR_H
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