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24e70e3930
This is a continuation of what's been started in #89178. As a drive-by, this also changes the PSTL macro to say `EXPERIMENTAL` instead of `INCOMPLETE`.
109 lines
3.9 KiB
C++
109 lines
3.9 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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// For information see https://libcxx.llvm.org/DesignDocs/TimeZone.html
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#ifndef _LIBCPP___CHRONO_TZDB_LIST_H
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#define _LIBCPP___CHRONO_TZDB_LIST_H
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#include <version>
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// Enable the contents of the header only when libc++ was built with experimental features enabled.
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#if _LIBCPP_HAS_EXPERIMENTAL_TZDB
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# include <__chrono/time_zone.h>
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# include <__chrono/tzdb.h>
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# include <__config>
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# include <__fwd/string.h>
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# include <forward_list>
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# include <string_view>
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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_BEGIN_NAMESPACE_STD
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# if _LIBCPP_STD_VER >= 20 && _LIBCPP_HAS_TIME_ZONE_DATABASE && _LIBCPP_HAS_FILESYSTEM && _LIBCPP_HAS_LOCALIZATION
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namespace chrono {
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// TODO TZDB
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// Libc++ recently switched to only export __ugly_names from the dylib.
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// Since the library is still experimental the functions in this header
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// should be adapted to this new style. The other tzdb headers should be
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// evaluated too.
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class _LIBCPP_AVAILABILITY_TZDB tzdb_list {
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public:
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class __impl; // public to allow construction in dylib
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_LIBCPP_HIDE_FROM_ABI explicit tzdb_list(__impl* __p) : __impl_(__p) {
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_LIBCPP_ASSERT_NON_NULL(__impl_ != nullptr, "initialized time_zone without a valid pimpl object");
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}
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_LIBCPP_EXPORTED_FROM_ABI ~tzdb_list();
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tzdb_list(const tzdb_list&) = delete;
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tzdb_list& operator=(const tzdb_list&) = delete;
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using const_iterator = forward_list<tzdb>::const_iterator;
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI const tzdb& front() const noexcept { return __front(); }
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_LIBCPP_HIDE_FROM_ABI const_iterator erase_after(const_iterator __p) { return __erase_after(__p); }
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI const_iterator begin() const noexcept { return __begin(); }
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI const_iterator end() const noexcept { return __end(); }
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI const_iterator cbegin() const noexcept { return __cbegin(); }
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI const_iterator cend() const noexcept { return __cend(); }
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI __impl& __implementation() { return *__impl_; }
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private:
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[[nodiscard]] _LIBCPP_EXPORTED_FROM_ABI const tzdb& __front() const noexcept;
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_LIBCPP_EXPORTED_FROM_ABI const_iterator __erase_after(const_iterator __p);
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[[nodiscard]] _LIBCPP_EXPORTED_FROM_ABI const_iterator __begin() const noexcept;
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[[nodiscard]] _LIBCPP_EXPORTED_FROM_ABI const_iterator __end() const noexcept;
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[[nodiscard]] _LIBCPP_EXPORTED_FROM_ABI const_iterator __cbegin() const noexcept;
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[[nodiscard]] _LIBCPP_EXPORTED_FROM_ABI const_iterator __cend() const noexcept;
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__impl* __impl_;
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};
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[[nodiscard]] _LIBCPP_AVAILABILITY_TZDB _LIBCPP_EXPORTED_FROM_ABI tzdb_list& get_tzdb_list();
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[[nodiscard]] _LIBCPP_AVAILABILITY_TZDB _LIBCPP_HIDE_FROM_ABI inline const tzdb& get_tzdb() {
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return get_tzdb_list().front();
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}
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[[nodiscard]] _LIBCPP_AVAILABILITY_TZDB _LIBCPP_HIDE_FROM_ABI inline const time_zone* locate_zone(string_view __name) {
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return get_tzdb().locate_zone(__name);
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}
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[[nodiscard]] _LIBCPP_AVAILABILITY_TZDB _LIBCPP_HIDE_FROM_ABI inline const time_zone* current_zone() {
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return get_tzdb().current_zone();
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}
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_LIBCPP_AVAILABILITY_TZDB _LIBCPP_EXPORTED_FROM_ABI const tzdb& reload_tzdb();
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[[nodiscard]] _LIBCPP_AVAILABILITY_TZDB _LIBCPP_EXPORTED_FROM_ABI string remote_version();
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} // namespace chrono
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# endif // _LIBCPP_STD_VER >= 20 && _LIBCPP_HAS_TIME_ZONE_DATABASE && _LIBCPP_HAS_FILESYSTEM &&
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// _LIBCPP_HAS_LOCALIZATION
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_HAS_EXPERIMENTAL_TZDB
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#endif // _LIBCPP___CHRONO_TZDB_LIST_H
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