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/*
* Copyright (C) 2019 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#if ENABLE(DFG_JIT)
#include "DumpContext.h"
#include <wtf/HashMap.h>
#include <wtf/PrintStream.h>
namespace JSC {
class JSGlobalObject;
namespace DFG {
class DesiredGlobalProperty {
public:
DesiredGlobalProperty() = default;
DesiredGlobalProperty(JSGlobalObject* globalObject, unsigned identifierNumber)
: m_globalObject(globalObject)
, m_identifierNumber(identifierNumber)
{
}
DesiredGlobalProperty(WTF::HashTableDeletedValueType)
: m_globalObject(nullptr)
, m_identifierNumber(UINT_MAX)
{
}
JSGlobalObject* globalObject() const { return m_globalObject; }
unsigned identifierNumber() const { return m_identifierNumber; }
friend bool operator==(const DesiredGlobalProperty&, const DesiredGlobalProperty&) = default;
bool isHashTableDeletedValue() const
{
return !m_globalObject && m_identifierNumber == UINT_MAX;
}
unsigned hash() const
{
return WTF::PtrHash<JSGlobalObject*>::hash(m_globalObject) + m_identifierNumber * 7;
}
void dumpInContext(PrintStream& out, DumpContext*) const
{
out.print(m_identifierNumber, " for ", RawPointer(m_globalObject));
}
void dump(PrintStream& out) const
{
dumpInContext(out, nullptr);
}
private:
JSGlobalObject* m_globalObject { nullptr };
unsigned m_identifierNumber { 0 };
};
struct DesiredGlobalPropertyHash {
static unsigned hash(const DesiredGlobalProperty& key) { return key.hash(); }
static bool equal(const DesiredGlobalProperty& a, const DesiredGlobalProperty& b) { return a == b; }
static constexpr bool safeToCompareToEmptyOrDeleted = true;
};
} } // namespace JSC::DFG
namespace WTF {
template<typename T> struct DefaultHash;
template<> struct DefaultHash<JSC::DFG::DesiredGlobalProperty> : JSC::DFG::DesiredGlobalPropertyHash { };
template<typename T> struct HashTraits;
template<> struct HashTraits<JSC::DFG::DesiredGlobalProperty> : SimpleClassHashTraits<JSC::DFG::DesiredGlobalProperty> { };
} // namespace WTF
#endif // ENABLE(DFG_JIT)
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