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/*
* 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.
*
* 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.
*/
#ifndef JSNameScope_h
#define JSNameScope_h
#include "JSEnvironmentRecord.h"
#include "JSGlobalObject.h"
namespace JSC {
// Used for scopes with a single named variable: catch and named function expression.
class JSNameScope : public JSEnvironmentRecord {
public:
typedef JSEnvironmentRecord Base;
static JSNameScope* create(ExecState* exec, const Identifier& identifier, JSValue value, unsigned attributes)
{
VM& vm = exec->vm();
JSNameScope* scopeObject = new (NotNull, allocateCell<JSNameScope>(vm.heap)) JSNameScope(vm, exec->lexicalGlobalObject(), exec->scope());
scopeObject->finishCreation(vm, identifier, value, attributes);
return scopeObject;
}
static JSNameScope* create(VM& vm, JSGlobalObject* globalObject, const Identifier& identifier, JSValue value, unsigned attributes, JSScope* next)
{
JSNameScope* scopeObject = new (NotNull, allocateCell<JSNameScope>(vm.heap)) JSNameScope(vm, globalObject, next);
scopeObject->finishCreation(vm, identifier, value, attributes);
return scopeObject;
}
static void visitChildren(JSCell*, SlotVisitor&);
static JSValue toThis(JSCell*, ExecState*, ECMAMode);
static bool getOwnPropertySlot(JSObject*, ExecState*, PropertyName, PropertySlot&);
static void put(JSCell*, ExecState*, PropertyName, JSValue, PutPropertySlot&);
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue proto) { return Structure::create(vm, globalObject, proto, TypeInfo(NameScopeObjectType, StructureFlags), info()); }
DECLARE_INFO;
protected:
void finishCreation(VM& vm, const Identifier& identifier, JSValue value, unsigned attributes)
{
Base::finishCreation(vm);
m_registerStore.set(vm, this, value);
symbolTable()->add(identifier.impl(), SymbolTableEntry(-1, attributes));
}
static const unsigned StructureFlags = OverridesGetOwnPropertySlot | Base::StructureFlags;
private:
JSNameScope(VM& vm, JSGlobalObject* globalObject, JSScope* next)
: Base(
vm,
globalObject->nameScopeStructure(),
reinterpret_cast<Register*>(&m_registerStore + 1),
next
)
{
}
WriteBarrier<Unknown> m_registerStore;
};
}
#endif // JSNameScope_h
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