JSValue* JSActivation::argumentsGetter(ExecState* exec, const Identifier&, const PropertySlot& slot)
{
JSActivation* thisObj = static_cast<JSActivation*>(slot.slotBase());
if (!thisObj->d()->argumentsObject)
thisObj->d()->argumentsObject = thisObj->createArgumentsObject(exec);
return thisObj->d()->argumentsObject;
}
JSValue JSActivation::argumentsGetter(ExecState*, JSValue slotBase, const Identifier&)
{
JSActivation* activation = asActivation(slotBase);
CallFrame* callFrame = CallFrame::create(activation->d()->registers);
int argumentsRegister = activation->d()->functionExecutable->generatedBytecode().argumentsRegister();
if (!callFrame->uncheckedR(argumentsRegister).jsValue()) {
JSValue arguments = JSValue(new (callFrame) Arguments(callFrame));
callFrame->uncheckedR(argumentsRegister) = arguments;
callFrame->uncheckedR(unmodifiedArgumentsRegister(argumentsRegister)) = arguments;
}
ASSERT(callFrame->uncheckedR(argumentsRegister).jsValue().inherits(&Arguments::info));
return callFrame->uncheckedR(argumentsRegister).jsValue();
}
JSValue JSActivation::argumentsGetter(ExecState* exec, const Identifier&, const PropertySlot& slot)
{
JSActivation* activation = asActivation(slot.slotBase());
if (activation->d()->functionExecutable->usesArguments()) {
PropertySlot slot;
activation->symbolTableGet(exec->propertyNames().arguments, slot);
return slot.getValue(exec, exec->propertyNames().arguments);
}
CallFrame* callFrame = CallFrame::create(activation->d()->registers);
Arguments* arguments = callFrame->optionalCalleeArguments();
if (!arguments) {
arguments = new (callFrame) Arguments(callFrame);
arguments->copyRegisters();
callFrame->setCalleeArguments(arguments);
}
ASSERT(arguments->inherits(&Arguments::info));
return arguments;
}
