mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-11-23 04:09:40 +00:00
110 lines
3.4 KiB
C++
110 lines
3.4 KiB
C++
/*
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* Copyright (C) 2012-2019 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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#include "BytecodeIndex.h"
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#include "CodeBlockHash.h"
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#include "JSCJSValue.h"
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#include <wtf/PrintStream.h>
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namespace JSC {
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class CodeBlock;
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namespace Profiler {
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class Bytecodes;
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class Database;
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class Origin {
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public:
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Origin() = default;
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Origin(WTF::HashTableDeletedValueType)
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: m_bytecodeIndex(WTF::HashTableDeletedValue)
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{ }
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Origin(Bytecodes* bytecodes, BytecodeIndex bytecodeIndex)
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: m_bytecodes(bytecodes)
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, m_bytecodeIndex(bytecodeIndex)
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{
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ASSERT(m_bytecodeIndex.offset() < std::numeric_limits<unsigned>::max() - 1);
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}
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Origin(Database&, CodeBlock*, BytecodeIndex);
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bool operator!() const { return !m_bytecodeIndex; }
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Bytecodes* bytecodes() const { return m_bytecodes; }
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BytecodeIndex bytecodeIndex() const { return m_bytecodeIndex; }
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bool operator==(const Origin&) const;
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bool operator!=(const Origin& other) const { return !(*this == other); }
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unsigned hash() const;
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bool isHashTableDeletedValue() const;
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void dump(PrintStream&) const;
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JSValue toJS(JSGlobalObject*) const;
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private:
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Bytecodes* m_bytecodes;
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BytecodeIndex m_bytecodeIndex;
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};
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inline bool Origin::operator==(const Origin& other) const
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{
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return m_bytecodes == other.m_bytecodes
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&& m_bytecodeIndex == other.m_bytecodeIndex;
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}
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inline unsigned Origin::hash() const
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{
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return WTF::PtrHash<Bytecodes*>::hash(m_bytecodes) + m_bytecodeIndex.hash();
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}
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inline bool Origin::isHashTableDeletedValue() const
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{
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return m_bytecodeIndex.isHashTableDeletedValue();
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}
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struct OriginHash {
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static unsigned hash(const Origin& key) { return key.hash(); }
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static bool equal(const Origin& a, const Origin& b) { return a == b; }
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static constexpr bool safeToCompareToEmptyOrDeleted = true;
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};
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} } // namespace JSC::Profiler
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namespace WTF {
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template<typename T> struct DefaultHash;
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template<> struct DefaultHash<JSC::Profiler::Origin> : JSC::Profiler::OriginHash { };
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template<typename T> struct HashTraits;
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template<> struct HashTraits<JSC::Profiler::Origin> : SimpleClassHashTraits<JSC::Profiler::Origin> { };
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} // namespace WTF
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