[libc++][chrono] Loads leap-seconds.list in tzdb. #82113
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| Original file line number | Diff line number | Diff line change |
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| // -*- 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 | ||
| // | ||
| //===----------------------------------------------------------------------===// | ||
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| // For information see https://libcxx.llvm.org/DesignDocs/TimeZone.html | ||
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| #ifndef _LIBCPP___CHRONO_LEAP_SECOND_H | ||
| #define _LIBCPP___CHRONO_LEAP_SECOND_H | ||
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| #include <version> | ||
| // Enable the contents of the header only when libc++ was built with experimental features enabled. | ||
| #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_TZDB) | ||
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| # 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> | ||
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| # if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) | ||
| # pragma GCC system_header | ||
| # endif | ||
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| _LIBCPP_BEGIN_NAMESPACE_STD | ||
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| # if _LIBCPP_STD_VER >= 20 | ||
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| namespace chrono { | ||
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| class leap_second { | ||
| public: | ||
| struct __constructor_tag; | ||
| [[nodiscard]] | ||
| _LIBCPP_HIDE_FROM_ABI explicit constexpr leap_second(__constructor_tag&&, sys_seconds __date, seconds __value) | ||
| : __date_(__date), __value_(__value) {} | ||
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| _LIBCPP_HIDE_FROM_ABI leap_second(const leap_second&) = default; | ||
| _LIBCPP_HIDE_FROM_ABI leap_second& operator=(const leap_second&) = default; | ||
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| _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr sys_seconds date() const noexcept { return __date_; } | ||
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| _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr seconds value() const noexcept { return __value_; } | ||
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| private: | ||
| sys_seconds __date_; | ||
| seconds __value_; | ||
| }; | ||
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| _LIBCPP_HIDE_FROM_ABI inline constexpr bool operator==(const leap_second& __x, const leap_second& __y) { | ||
| return __x.date() == __y.date(); | ||
| } | ||
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| _LIBCPP_HIDE_FROM_ABI inline constexpr strong_ordering operator<=>(const leap_second& __x, const leap_second& __y) { | ||
| return __x.date() <=> __y.date(); | ||
| } | ||
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| template <class _Duration> | ||
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator==(const leap_second& __x, const sys_time<_Duration>& __y) { | ||
| return __x.date() == __y; | ||
| } | ||
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| template <class _Duration> | ||
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator<(const leap_second& __x, const sys_time<_Duration>& __y) { | ||
| return __x.date() < __y; | ||
| } | ||
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| template <class _Duration> | ||
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator<(const sys_time<_Duration>& __x, const leap_second& __y) { | ||
| return __x < __y.date(); | ||
| } | ||
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| template <class _Duration> | ||
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator>(const leap_second& __x, const sys_time<_Duration>& __y) { | ||
| return __y < __x; | ||
| } | ||
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| template <class _Duration> | ||
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator>(const sys_time<_Duration>& __x, const leap_second& __y) { | ||
| return __y < __x; | ||
| } | ||
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| template <class _Duration> | ||
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator<=(const leap_second& __x, const sys_time<_Duration>& __y) { | ||
| return !(__y < __x); | ||
| } | ||
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| template <class _Duration> | ||
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator<=(const sys_time<_Duration>& __x, const leap_second& __y) { | ||
| return !(__y < __x); | ||
| } | ||
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| template <class _Duration> | ||
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator>=(const leap_second& __x, const sys_time<_Duration>& __y) { | ||
| return !(__x < __y); | ||
| } | ||
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| template <class _Duration> | ||
| _LIBCPP_HIDE_FROM_ABI constexpr bool operator>=(const sys_time<_Duration>& __x, const leap_second& __y) { | ||
| return !(__x < __y); | ||
| } | ||
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| # 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 | ||
|
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There was a problem hiding this comment. GCC trunk now errors on this saying the requirement is depending on itself: https://gcc.godbolt.org/z/aE5jPnnre Can we fix it? There was a problem hiding this comment. This is not conforming. There was a problem hiding this comment. |
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| } // namespace chrono | ||
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| # endif //_LIBCPP_STD_VER >= 20 | ||
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| _LIBCPP_END_NAMESPACE_STD | ||
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| #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_TZDB) | ||
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| #endif // _LIBCPP___CHRONO_LEAP_SECOND_H | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| // -*- C++ -*- | ||
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| //===----------------------------------------------------------------------===// | ||
| // | ||
| // 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 | ||
| // | ||
| //===----------------------------------------------------------------------===// | ||
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| // For information see https://libcxx.llvm.org/DesignDocs/TimeZone.html | ||
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| #ifndef _LIBCPP_SRC_INCLUDE_TZDB_LEAP_SECOND_PRIVATE_H | ||
| #define _LIBCPP_SRC_INCLUDE_TZDB_LEAP_SECOND_PRIVATE_H | ||
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| #include <chrono> | ||
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| _LIBCPP_BEGIN_NAMESPACE_STD | ||
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| namespace chrono { | ||
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| struct leap_second::__constructor_tag {}; | ||
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| } // namespace chrono | ||
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| _LIBCPP_END_NAMESPACE_STD | ||
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| #endif // _LIBCPP_SRC_INCLUDE_TZDB_LEAP_SECOND_PRIVATE_H | ||
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