mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-11-23 04:09:40 +00:00
113 lines
3.5 KiB
C++
113 lines
3.5 KiB
C++
/*
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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 APPLE INC. ``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 APPLE INC. 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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#if ENABLE(DFG_JIT)
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#include "DumpContext.h"
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#include <wtf/HashMap.h>
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#include <wtf/PrintStream.h>
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namespace JSC {
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class JSGlobalObject;
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namespace DFG {
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class DesiredGlobalProperty {
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public:
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DesiredGlobalProperty() = default;
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DesiredGlobalProperty(JSGlobalObject* globalObject, unsigned identifierNumber)
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: m_globalObject(globalObject)
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, m_identifierNumber(identifierNumber)
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{
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}
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DesiredGlobalProperty(WTF::HashTableDeletedValueType)
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: m_globalObject(nullptr)
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, m_identifierNumber(UINT_MAX)
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{
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}
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JSGlobalObject* globalObject() const { return m_globalObject; }
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unsigned identifierNumber() const { return m_identifierNumber; }
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bool operator==(const DesiredGlobalProperty& other) const
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{
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return m_globalObject == other.m_globalObject && m_identifierNumber == other.m_identifierNumber;
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}
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bool operator!=(const DesiredGlobalProperty& other) const
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{
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return !(*this == other);
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}
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bool isHashTableDeletedValue() const
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{
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return !m_globalObject && m_identifierNumber == UINT_MAX;
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}
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unsigned hash() const
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{
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return WTF::PtrHash<JSGlobalObject*>::hash(m_globalObject) + m_identifierNumber * 7;
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}
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void dumpInContext(PrintStream& out, DumpContext*) const
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{
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out.print(m_identifierNumber, " for ", RawPointer(m_globalObject));
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}
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void dump(PrintStream& out) const
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{
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dumpInContext(out, nullptr);
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}
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private:
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JSGlobalObject* m_globalObject { nullptr };
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unsigned m_identifierNumber { 0 };
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};
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struct DesiredGlobalPropertyHash {
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static unsigned hash(const DesiredGlobalProperty& key) { return key.hash(); }
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static bool equal(const DesiredGlobalProperty& a, const DesiredGlobalProperty& b) { return a == b; }
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static constexpr bool safeToCompareToEmptyOrDeleted = true;
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};
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} } // namespace JSC::DFG
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namespace WTF {
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template<typename T> struct DefaultHash;
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template<> struct DefaultHash<JSC::DFG::DesiredGlobalProperty> : JSC::DFG::DesiredGlobalPropertyHash { };
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template<typename T> struct HashTraits;
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template<> struct HashTraits<JSC::DFG::DesiredGlobalProperty> : SimpleClassHashTraits<JSC::DFG::DesiredGlobalProperty> { };
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} // namespace WTF
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#endif // ENABLE(DFG_JIT)
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