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-exception 7// 8//===----------------------------------------------------------------------===// 9 10// For information see https://libcxx.llvm.org/DesignDocs/TimeZone.html 11 12#ifndef _LIBCPP___CHRONO_TZDB_H 13#define _LIBCPP___CHRONO_TZDB_H 14 15#include <version> 16// Enable the contents of the header only when libc++ was built with experimental features enabled. 17#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_TZDB) 18 19# include <string> 20 21# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 22# pragma GCC system_header 23# endif 24 25_LIBCPP_BEGIN_NAMESPACE_STD 26 27# if _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_HAS_NO_TIME_ZONE_DATABASE) && !defined(_LIBCPP_HAS_NO_FILESYSTEM) && \ 28 !defined(_LIBCPP_HAS_NO_LOCALIZATION) 29 30namespace chrono { 31 32struct _LIBCPP_AVAILABILITY_TZDB tzdb { 33 string version; 34}; 35 36} // namespace chrono 37 38# endif // _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_HAS_NO_TIME_ZONE_DATABASE) && !defined(_LIBCPP_HAS_NO_FILESYSTEM) 39 // && !defined(_LIBCPP_HAS_NO_LOCALIZATION) 40 41_LIBCPP_END_NAMESPACE_STD 42 43#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_TZDB) 44 45#endif // _LIBCPP___CHRONO_TZDB_H 46