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 
30 namespace chrono {
31 
32 struct _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