1 files changed, 108 insertions, 0 deletions
diff --git a/contrib/llvm-project/libcxx/include/__chrono/tzdb_list.h b/contrib/llvm-project/libcxx/include/__chrono/tzdb_list.h
new file mode 100644
index 000000000000..aeef4fe1aba3
--- /dev/null
+++ b/contrib/llvm-project/libcxx/include/__chrono/tzdb_list.h
@@ -0,0 +1,108 @@
+// -*- 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_TZDB_LIST_H
+#define _LIBCPP___CHRONO_TZDB_LIST_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/time_zone.h>
+#  include <__chrono/tzdb.h>
+#  include <__config>
+#  include <__fwd/string.h>
+#  include <forward_list>
+
+#  if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#    pragma GCC system_header
+#  endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#  if _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_HAS_NO_TIME_ZONE_DATABASE) && !defined(_LIBCPP_HAS_NO_FILESYSTEM) &&   \
+      !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+
+namespace chrono {
+
+// TODO TZDB
+// Libc++ recently switched to only export __ugly_names from the dylib.
+// Since the library is still experimental the functions in this header
+// should be adapted to this new style. The other tzdb headers should be
+// evaluated too.
+
+class _LIBCPP_AVAILABILITY_TZDB tzdb_list {
+public:
+  class __impl; // public to allow construction in dylib
+  _LIBCPP_HIDE_FROM_ABI explicit tzdb_list(__impl* __p) : __impl_(__p) {
+    _LIBCPP_ASSERT_NON_NULL(__impl_ != nullptr, "initialized time_zone without a valid pimpl object");
+  }
+  _LIBCPP_EXPORTED_FROM_ABI ~tzdb_list();
+
+  tzdb_list(const tzdb_list&)            = delete;
+  tzdb_list& operator=(const tzdb_list&) = delete;
+
+  using const_iterator = forward_list<tzdb>::const_iterator;
+
+  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const tzdb& front() const noexcept { return __front(); }
+
+  _LIBCPP_HIDE_FROM_ABI const_iterator erase_after(const_iterator __p) { return __erase_after(__p); }
+
+  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const_iterator begin() const noexcept { return __begin(); }
+  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const_iterator end() const noexcept { return __end(); }
+
+  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const_iterator cbegin() const noexcept { return __cbegin(); }
+  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const_iterator cend() const noexcept { return __cend(); }
+
+  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI __impl& __implementation() { return *__impl_; }
+
+private:
+  [[nodiscard]] _LIBCPP_EXPORTED_FROM_ABI const tzdb& __front() const noexcept;
+
+  _LIBCPP_EXPORTED_FROM_ABI const_iterator __erase_after(const_iterator __p);
+
+  [[nodiscard]] _LIBCPP_EXPORTED_FROM_ABI const_iterator __begin() const noexcept;
+  [[nodiscard]] _LIBCPP_EXPORTED_FROM_ABI const_iterator __end() const noexcept;
+
+  [[nodiscard]] _LIBCPP_EXPORTED_FROM_ABI const_iterator __cbegin() const noexcept;
+  [[nodiscard]] _LIBCPP_EXPORTED_FROM_ABI const_iterator __cend() const noexcept;
+
+  __impl* __impl_;
+};
+
+[[nodiscard]] _LIBCPP_AVAILABILITY_TZDB _LIBCPP_EXPORTED_FROM_ABI tzdb_list& get_tzdb_list();
+
+[[nodiscard]] _LIBCPP_AVAILABILITY_TZDB _LIBCPP_HIDE_FROM_ABI inline const tzdb& get_tzdb() {
+  return get_tzdb_list().front();
+}
+
+[[nodiscard]] _LIBCPP_AVAILABILITY_TZDB _LIBCPP_HIDE_FROM_ABI inline const time_zone* locate_zone(string_view __name) {
+  return get_tzdb().locate_zone(__name);
+}
+
+[[nodiscard]] _LIBCPP_AVAILABILITY_TZDB _LIBCPP_HIDE_FROM_ABI inline const time_zone* current_zone() {
+  return get_tzdb().current_zone();
+}
+
+_LIBCPP_AVAILABILITY_TZDB _LIBCPP_EXPORTED_FROM_ABI const tzdb& reload_tzdb();
+
+[[nodiscard]] _LIBCPP_AVAILABILITY_TZDB _LIBCPP_EXPORTED_FROM_ABI string remote_version();
+
+} // namespace chrono
+
+#  endif // _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_HAS_NO_TIME_ZONE_DATABASE) && !defined(_LIBCPP_HAS_NO_FILESYSTEM)
+         // && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_TZDB)
+
+#endif // _LIBCPP___CHRONO_TZDB_LIST_H