256be56344
-- 00d42e3d5433aaf29c2ed293520b2ba178ae8bdb by Greg Falcon <gfalcon@google.com>: Import of CCTZ from GitHub. PiperOrigin-RevId: 238061818 -- 867a7ca318fac2991ea9a4107dbae3cc9fbf974a by Abseil Team <absl-team@google.com>: Added a IWYU export pragma when including a standard header for the purpose of aliasing its symbols. PiperOrigin-RevId: 238022277 -- 17047745058f2f151cd986ea9f649512542d3876 by Matt Armstrong <marmstrong@google.com>: Clarify the comment discouraging WrapUnique<T>(x) calls. PiperOrigin-RevId: 237873803 -- 3dcb2e4968243d33ca0ce53280c445df50f4a7ec by Samuel Benzaquen <sbenza@google.com>: Workaround clang bug https://bugs.llvm.org/show_bug.cgi?id=38289 PiperOrigin-RevId: 237873551 -- f348d2dc7087a990cbdfb95aa51fd7ff478ae40e by Samuel Benzaquen <sbenza@google.com>: Reduce minimum capacity to 1. This reduces memory usage for small tables. A flat_hash_set<int> of 1 element goes from 92 bytes to 24. A flat_hash_set<string> of 1 element goes from 512 bytes to 56. PiperOrigin-RevId: 237859811 -- 9c8125be5e4e5d22a7bb62bdec8c323338385c1b by Jon Cohen <cohenjon@google.com>: Bump to CMake 3.5. This is the oldest modern cmake being included by default in most popular OS distributions according to https://repology.org/project/cmake/versions. Specifically, Ubuntu LTS 16.04 uses cmake 3.5 (https://packages.ubuntu.com/xenial/cmake) PiperOrigin-RevId: 237859345 -- 07638d672e0a4dced986a62750cfd8318ed36ffa by Derek Mauro <dmauro@google.com>: Import of CCTZ from GitHub. PiperOrigin-RevId: 237714597 GitOrigin-RevId: 00d42e3d5433aaf29c2ed293520b2ba178ae8bdb Change-Id: I5faecc45add4a5a774d4f9baf06e5519091f2ccc
90 lines
3.2 KiB
C++
90 lines
3.2 KiB
C++
// Copyright 2016 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IMPL_H_
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#define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IMPL_H_
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#include <memory>
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#include <string>
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#include "absl/time/internal/cctz/include/cctz/civil_time.h"
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#include "absl/time/internal/cctz/include/cctz/time_zone.h"
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#include "time_zone_if.h"
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#include "time_zone_info.h"
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namespace absl {
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namespace time_internal {
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namespace cctz {
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// time_zone::Impl is the internal object referenced by a cctz::time_zone.
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class time_zone::Impl {
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public:
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// The UTC time zone. Also used for other time zones that fail to load.
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static time_zone UTC();
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// Load a named time zone. Returns false if the name is invalid, or if
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// some other kind of error occurs. Note that loading "UTC" never fails.
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static bool LoadTimeZone(const std::string& name, time_zone* tz);
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// Clears the map of cached time zones. Primarily for use in benchmarks
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// that gauge the performance of loading/parsing the time-zone data.
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static void ClearTimeZoneMapTestOnly();
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// The primary key is the time-zone ID (e.g., "America/New_York").
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const std::string& Name() const {
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// TODO: It would nice if the zoneinfo data included the zone name.
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return name_;
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}
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// Breaks a time_point down to civil-time components in this time zone.
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time_zone::absolute_lookup BreakTime(const time_point<seconds>& tp) const {
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return zone_->BreakTime(tp);
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}
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// Converts the civil-time components in this time zone into a time_point.
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// That is, the opposite of BreakTime(). The requested civil time may be
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// ambiguous or illegal due to a change of UTC offset.
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time_zone::civil_lookup MakeTime(const civil_second& cs) const {
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return zone_->MakeTime(cs);
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}
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// Finds the time of the next/previous offset change in this time zone.
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bool NextTransition(const time_point<seconds>& tp,
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time_zone::civil_transition* trans) const {
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return zone_->NextTransition(tp, trans);
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}
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bool PrevTransition(const time_point<seconds>& tp,
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time_zone::civil_transition* trans) const {
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return zone_->PrevTransition(tp, trans);
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}
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// Returns an implementation-defined version std::string for this time zone.
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std::string Version() const { return zone_->Version(); }
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// Returns an implementation-defined description of this time zone.
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std::string Description() const { return zone_->Description(); }
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private:
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explicit Impl(const std::string& name);
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static const Impl* UTCImpl();
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const std::string name_;
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std::unique_ptr<TimeZoneIf> zone_;
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};
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} // namespace cctz
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} // namespace time_internal
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} // namespace absl
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#endif // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_IMPL_H_
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