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https://github.com/darlinghq/darling-JavaScriptCore.git
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101 lines
3.3 KiB
C++
101 lines
3.3 KiB
C++
/*
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* Copyright (C) 2010 University of Szeged
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* Copyright (C) 2010 Renata Hodovan (hodovan@inf.u-szeged.hu)
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* All rights reserved.
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* Copyright (C) 2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL UNIVERSITY OF SZEGED OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "YarrFlags.h"
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#include <wtf/OptionSet.h>
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#include <wtf/text/StringHash.h>
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namespace JSC {
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struct RegExpKey {
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OptionSet<Yarr::Flags> flagsValue;
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PackedRefPtr<StringImpl> pattern;
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RegExpKey()
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{
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}
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RegExpKey(OptionSet<Yarr::Flags> flags)
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: flagsValue(flags)
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{
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}
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RegExpKey(OptionSet<Yarr::Flags> flags, const String& pattern)
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: flagsValue(flags)
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, pattern(pattern.impl())
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{
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}
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RegExpKey(OptionSet<Yarr::Flags> flags, RefPtr<StringImpl>&& pattern)
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: flagsValue(flags)
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, pattern(WTFMove(pattern))
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{
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}
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RegExpKey(OptionSet<Yarr::Flags> flags, const RefPtr<StringImpl>& pattern)
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: flagsValue(flags)
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, pattern(pattern)
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{
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}
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friend inline bool operator==(const RegExpKey& a, const RegExpKey& b);
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struct Hash {
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static unsigned hash(const RegExpKey& key) { return key.pattern->hash(); }
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static bool equal(const RegExpKey& a, const RegExpKey& b) { return a == b; }
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static constexpr bool safeToCompareToEmptyOrDeleted = false;
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};
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};
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inline bool operator==(const RegExpKey& a, const RegExpKey& b)
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{
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if (a.flagsValue != b.flagsValue)
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return false;
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if (!a.pattern)
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return !b.pattern;
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if (!b.pattern)
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return false;
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return equal(a.pattern.get(), b.pattern.get());
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}
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} // namespace JSC
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namespace WTF {
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template<typename> struct DefaultHash;
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template<> struct DefaultHash<JSC::RegExpKey> : JSC::RegExpKey::Hash { };
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template<> struct HashTraits<JSC::RegExpKey> : GenericHashTraits<JSC::RegExpKey> {
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static constexpr bool emptyValueIsZero = true;
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static void constructDeletedValue(JSC::RegExpKey& slot) { slot.flagsValue = JSC::Yarr::Flags::DeletedValue; }
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static bool isDeletedValue(const JSC::RegExpKey& value) { return value.flagsValue == JSC::Yarr::Flags::DeletedValue; }
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};
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} // namespace WTF
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