bool JSActivation::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
{
JSActivation* thisObject = jsCast<JSActivation*>(object);
if (propertyName == exec->propertyNames().arguments) {
// Defend against the inspector asking for the arguments object after it has been optimized out.
CallFrame* callFrame = CallFrame::create(reinterpret_cast<Register*>(thisObject->m_registers));
if (!thisObject->isTornOff() && (callFrame->codeBlock()->usesArguments() || callFrame->codeBlock()->usesEval())) {
slot.setCustom(thisObject, DontEnum, argumentsGetter);
return true;
}
}
if (thisObject->symbolTableGet(propertyName, slot))
return true;
unsigned attributes;
if (JSValue value = thisObject->getDirect(exec->vm(), propertyName, attributes)) {
slot.setValue(thisObject, attributes, value);
return true;
}
// We don't call through to JSObject because there's no way to give an
// activation object getter properties or a prototype.
ASSERT(!thisObject->hasGetterSetterProperties());
ASSERT(thisObject->prototype().isNull());
return false;
}
bool JSActivation::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
{
JSActivation* thisObject = jsCast<JSActivation*>(object);
if (propertyName == exec->propertyNames().arguments) {
// Defend against the inspector asking for the arguments object after it has been optimized out.
if (!thisObject->isTornOff()) {
slot.setCustom(thisObject, thisObject->getArgumentsGetter());
return true;
}
}
if (thisObject->symbolTableGet(propertyName, slot))
return true;
if (JSValue value = thisObject->getDirect(exec->vm(), propertyName)) {
slot.setValue(value);
return true;
}
// We don't call through to JSObject because there's no way to give an
// activation object getter properties or a prototype.
ASSERT(!thisObject->hasGetterSetterProperties());
ASSERT(thisObject->prototype().isNull());
return false;
}
bool JSActivation::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor& descriptor)
{
JSActivation* thisObject = jsCast<JSActivation*>(object);
if (propertyName == exec->propertyNames().arguments) {
// Defend against the inspector asking for the arguments object after it has been optimized out.
if (!thisObject->isTornOff()) {
PropertySlot slot(thisObject);
JSActivation::getOwnPropertySlot(thisObject, exec, propertyName, slot);
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontEnum);
return true;
}
}
if (thisObject->symbolTableGet(propertyName, descriptor))
return true;
return Base::getOwnPropertyDescriptor(object, exec, propertyName, descriptor);
}
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;
}
bool JSActivation::getOwnPropertySlot(JSCell* cell, ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
{
JSActivation* thisObject = static_cast<JSActivation*>(cell);
if (propertyName == exec->propertyNames().arguments) {
slot.setCustom(thisObject, thisObject->getArgumentsGetter());
return true;
}
if (thisObject->symbolTableGet(propertyName, slot))
return true;
if (WriteBarrierBase<Unknown>* location = thisObject->getDirectLocation(exec->globalData(), propertyName)) {
slot.setValue(location->get());
return true;
}
// We don't call through to JSObject because there's no way to give an
// activation object getter properties or a prototype.
ASSERT(!thisObject->hasGetterSetterProperties());
ASSERT(thisObject->prototype().isNull());
return false;
}
