/* | |
* Copyright (C) 2008, 2009 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. | |
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of | |
* its contributors may be used to endorse or promote products derived | |
* from this software without specific prior written permission. | |
* | |
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS CONTRIBUTORS BE LIABLE FOR ANY | |
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
*/ | |
#ifndef JSActivation_h | |
#define JSActivation_h | |
#include "CodeBlock.h" | |
#include "JSVariableObject.h" | |
#include "RegisterFile.h" | |
#include "SymbolTable.h" | |
#include "Nodes.h" | |
namespace JSC { | |
class Arguments; | |
class Register; | |
class JSActivation : public JSVariableObject { | |
typedef JSVariableObject Base; | |
public: | |
JSActivation(CallFrame*, NonNullPassRefPtr<FunctionExecutable>); | |
virtual ~JSActivation(); | |
virtual void markChildren(MarkStack&); | |
virtual bool isDynamicScope() const; | |
virtual bool isActivationObject() const { return true; } | |
virtual bool getOwnPropertySlot(ExecState*, const Identifier&, PropertySlot&); | |
virtual void put(ExecState*, const Identifier&, JSValue, PutPropertySlot&); | |
virtual void putWithAttributes(ExecState*, const Identifier&, JSValue, unsigned attributes); | |
virtual bool deleteProperty(ExecState*, const Identifier& propertyName); | |
virtual JSObject* toThisObject(ExecState*) const; | |
void copyRegisters(Arguments* arguments); | |
virtual const ClassInfo* classInfo() const { return &info; } | |
static const ClassInfo info; | |
static PassRefPtr<Structure> createStructure(JSValue proto) { return Structure::create(proto, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount); } | |
protected: | |
static const unsigned StructureFlags = OverridesGetOwnPropertySlot | NeedsThisConversion | OverridesMarkChildren | OverridesGetPropertyNames | JSVariableObject::StructureFlags; | |
private: | |
struct JSActivationData : public JSVariableObjectData { | |
JSActivationData(NonNullPassRefPtr<FunctionExecutable> _functionExecutable, Register* registers) | |
: JSVariableObjectData(_functionExecutable->generatedBytecode().symbolTable(), registers) | |
, functionExecutable(_functionExecutable) | |
{ | |
// We have to manually ref and deref the symbol table as JSVariableObjectData | |
// doesn't know about SharedSymbolTable | |
functionExecutable->generatedBytecode().sharedSymbolTable()->ref(); | |
} | |
~JSActivationData() | |
{ | |
static_cast<SharedSymbolTable*>(symbolTable)->deref(); | |
} | |
RefPtr<FunctionExecutable> functionExecutable; | |
}; | |
static JSValue argumentsGetter(ExecState*, JSValue, const Identifier&); | |
NEVER_INLINE PropertySlot::GetValueFunc getArgumentsGetter(); | |
JSActivationData* d() const { return static_cast<JSActivationData*>(JSVariableObject::d); } | |
}; | |
JSActivation* asActivation(JSValue); | |
inline JSActivation* asActivation(JSValue value) | |
{ | |
ASSERT(asObject(value)->inherits(&JSActivation::info)); | |
return static_cast<JSActivation*>(asObject(value)); | |
} | |
} // namespace JSC | |
#endif // JSActivation_h |