mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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114 lines
3.9 KiB
C++
114 lines
3.9 KiB
C++
/*
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* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
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* Copyright (C) 2006-2020 Apple Inc. All rights reserved.
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* Copyright (C) 2009 Google Inc. All rights reserved.
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* Copyright (C) 2010 Research In Motion Limited. All rights reserved.
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*
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code, released
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* March 31, 1998.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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*/
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#pragma once
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#include "DateInstanceCache.h"
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#include <wtf/DateMath.h>
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#include <wtf/GregorianDateTime.h>
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namespace JSC {
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class JSGlobalObject;
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class OpaqueICUTimeZone;
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class VM;
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// We do not expose icu::TimeZone in this header file. And we cannot use icu::TimeZone forward declaration
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// because icu namespace can be an alias to icu$verNum namespace.
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struct OpaqueICUTimeZoneDeleter {
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JS_EXPORT_PRIVATE void operator()(OpaqueICUTimeZone*);
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};
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struct LocalTimeOffsetCache {
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LocalTimeOffsetCache() = default;
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LocalTimeOffset offset;
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double start { 0.0 };
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double end { -1.0 };
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double incrementStart { 0.0 };
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double incrementEnd { 0.0 };
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};
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class DateCache {
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WTF_MAKE_FAST_ALLOCATED;
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WTF_MAKE_NONCOPYABLE(DateCache);
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public:
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DateCache();
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~DateCache();
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JS_EXPORT_PRIVATE void reset();
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String defaultTimeZone();
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Ref<DateInstanceData> cachedDateInstanceData(double millisecondsFromEpoch);
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void msToGregorianDateTime(double millisecondsFromEpoch, WTF::TimeType outputTimeType, GregorianDateTime&);
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double gregorianDateTimeToMS(const GregorianDateTime&, double milliseconds, WTF::TimeType inputTimeType);
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double parseDate(JSGlobalObject*, VM&, const WTF::String&);
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private:
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void timeZoneCacheSlow();
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LocalTimeOffset localTimeOffset(double millisecondsFromEpoch, WTF::TimeType inputTimeType = WTF::UTCTime);
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LocalTimeOffset calculateLocalTimeOffset(double millisecondsFromEpoch, WTF::TimeType inputTimeType);
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OpaqueICUTimeZone* timeZoneCache()
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{
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if (!m_timeZoneCache)
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timeZoneCacheSlow();
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return m_timeZoneCache.get();
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}
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std::unique_ptr<OpaqueICUTimeZone, OpaqueICUTimeZoneDeleter> m_timeZoneCache;
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LocalTimeOffsetCache m_utcTimeOffsetCache;
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LocalTimeOffsetCache m_localTimeOffsetCache;
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String m_cachedDateString;
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double m_cachedDateStringValue;
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DateInstanceCache m_dateInstanceCache;
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};
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ALWAYS_INLINE bool isUTCEquivalent(StringView timeZone)
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{
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return timeZone == "Etc/UTC"_s || timeZone == "Etc/GMT"_s;
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}
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} // namespace JSC
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