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/*
* Copyright (C) 2017-2020 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(JIT)
#include "MacroAssemblerCodeRef.h"
#include "ProxyableAccessCase.h"
namespace JSC {
class GetterSetterAccessCase final : public ProxyableAccessCase {
public:
using Base = ProxyableAccessCase;
friend class AccessCase;
friend class InlineCacheCompiler;
// This can return null if it hasn't been generated yet. That's
// actually somewhat likely because of how we do buffering of new cases.
// CallLinkInfo's ownership is held both by generated code via GCAwareJITStubRoutine and PolymorphicAccess.
// The ownership relation is PolymorphicAccess -> GCAwareJITStubRoutine -> CallLinkInfo.
// PolymorphicAccess can be destroyed while GCAwareJITStubRoutine is alive if we are destroying PolymorphicAccess
// while we are executing GCAwareJITStubRoutine. It is not possible that GetterSetterAccessCase is alive while
// GCAwareJITStubRoutine is destroyed.
OptimizingCallLinkInfo* callLinkInfo() const { return m_callLinkInfo; }
JSObject* customSlotBase() const { return m_customSlotBase.get(); }
std::optional<DOMAttributeAnnotation> domAttribute() const { return m_domAttribute; }
static Ref<AccessCase> create(
VM&, JSCell* owner, AccessType, CacheableIdentifier, PropertyOffset, Structure*,
const ObjectPropertyConditionSet&, bool viaGlobalProxy, WatchpointSet* additionalSet, CodePtr<CustomAccessorPtrTag> customGetter,
JSObject* customSlotBase, std::optional<DOMAttributeAnnotation>, RefPtr<PolyProtoAccessChain>&&);
static Ref<AccessCase> create(VM&, JSCell* owner, AccessType, Structure*, CacheableIdentifier, PropertyOffset,
const ObjectPropertyConditionSet&, RefPtr<PolyProtoAccessChain>&&, bool viaGlobalProxy = false,
CodePtr<CustomAccessorPtrTag> customSetter = nullptr, JSObject* customSlotBase = nullptr);
CodePtr<CustomAccessorPtrTag> customAccessor() const { return m_customAccessor; }
private:
GetterSetterAccessCase(VM&, JSCell*, AccessType, CacheableIdentifier, PropertyOffset, Structure*, const ObjectPropertyConditionSet&, bool viaGlobalProxy, WatchpointSet* additionalSet, JSObject* customSlotBase, RefPtr<PolyProtoAccessChain>&&);
GetterSetterAccessCase(const GetterSetterAccessCase&);
bool hasAlternateBaseImpl() const;
JSObject* alternateBaseImpl() const;
void dumpImpl(PrintStream&, CommaPrinter&, Indenter&) const;
Ref<AccessCase> cloneImpl() const;
WriteBarrier<JSObject> m_customSlotBase;
OptimizingCallLinkInfo* m_callLinkInfo { nullptr };
CodePtr<CustomAccessorPtrTag> m_customAccessor;
std::optional<DOMAttributeAnnotation> m_domAttribute;
};
} // namespace JSC
#endif // ENABLE(JIT)
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