| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // For information see https://libcxx.llvm.org/DesignDocs/TimeZone.html |
| |
| #ifndef _LIBCPP___CHRONO_LEAP_SECOND_H |
| #define _LIBCPP___CHRONO_LEAP_SECOND_H |
| |
| #include <version> |
| // Enable the contents of the header only when libc++ was built with experimental features enabled. |
| #if !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_TZDB) |
| |
| # include <__chrono/duration.h> |
| # include <__chrono/system_clock.h> |
| # include <__chrono/time_point.h> |
| # include <__compare/ordering.h> |
| # include <__compare/three_way_comparable.h> |
| # include <__config> |
| # include <__utility/private_constructor_tag.h> |
| |
| # if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| # endif |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| # if _LIBCPP_STD_VER >= 20 |
| |
| namespace chrono { |
| |
| class leap_second { |
| public: |
| [[nodiscard]] |
| _LIBCPP_HIDE_FROM_ABI explicit constexpr leap_second(__private_constructor_tag, sys_seconds __date, seconds __value) |
| : __date_(__date), __value_(__value) {} |
| |
| _LIBCPP_HIDE_FROM_ABI leap_second(const leap_second&) = default; |
| _LIBCPP_HIDE_FROM_ABI leap_second& operator=(const leap_second&) = default; |
| |
| _LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI constexpr sys_seconds date() const noexcept { return __date_; } |
| |
| _LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI constexpr seconds value() const noexcept { return __value_; } |
| |
| private: |
| sys_seconds __date_; |
| seconds __value_; |
| }; |
| |
| _LIBCPP_HIDE_FROM_ABI inline constexpr bool operator==(const leap_second& __x, const leap_second& __y) { |
| return __x.date() == __y.date(); |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI inline constexpr strong_ordering operator<=>(const leap_second& __x, const leap_second& __y) { |
| return __x.date() <=> __y.date(); |
| } |
| |
| template <class _Duration> |
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator==(const leap_second& __x, const sys_time<_Duration>& __y) { |
| return __x.date() == __y; |
| } |
| |
| template <class _Duration> |
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator<(const leap_second& __x, const sys_time<_Duration>& __y) { |
| return __x.date() < __y; |
| } |
| |
| template <class _Duration> |
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator<(const sys_time<_Duration>& __x, const leap_second& __y) { |
| return __x < __y.date(); |
| } |
| |
| template <class _Duration> |
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator>(const leap_second& __x, const sys_time<_Duration>& __y) { |
| return __y < __x; |
| } |
| |
| template <class _Duration> |
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator>(const sys_time<_Duration>& __x, const leap_second& __y) { |
| return __y < __x; |
| } |
| |
| template <class _Duration> |
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator<=(const leap_second& __x, const sys_time<_Duration>& __y) { |
| return !(__y < __x); |
| } |
| |
| template <class _Duration> |
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator<=(const sys_time<_Duration>& __x, const leap_second& __y) { |
| return !(__y < __x); |
| } |
| |
| template <class _Duration> |
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator>=(const leap_second& __x, const sys_time<_Duration>& __y) { |
| return !(__x < __y); |
| } |
| |
| template <class _Duration> |
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator>=(const sys_time<_Duration>& __x, const leap_second& __y) { |
| return !(__x < __y); |
| } |
| |
| # ifndef _LIBCPP_COMPILER_GCC |
| // This requirement cause a compilation loop in GCC-13 and running out of memory. |
| // TODO TZDB Test whether GCC-14 fixes this. |
| template <class _Duration> |
| requires three_way_comparable_with<sys_seconds, sys_time<_Duration>> |
| _LIBCPP_HIDE_FROM_ABI constexpr auto operator<=>(const leap_second& __x, const sys_time<_Duration>& __y) { |
| return __x.date() <=> __y; |
| } |
| # endif |
| |
| } // namespace chrono |
| |
| # endif //_LIBCPP_STD_VER >= 20 |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_TZDB) |
| |
| #endif // _LIBCPP___CHRONO_LEAP_SECOND_H |