EncodedJSValue JSC_HOST_CALL jsJavaScriptCallFrameAttributeThisObject(ExecState* exec)
{
    JSValue thisValue = exec->thisValue();
    JSJavaScriptCallFrame* castedThis = jsDynamicCast<JSJavaScriptCallFrame*>(thisValue);
    if (!castedThis)
        return throwVMTypeError(exec);

    ASSERT_GC_OBJECT_INHERITS(castedThis, JSJavaScriptCallFrame::info());
    return JSValue::encode(castedThis->thisObject(exec));
}
JSValue jsJavaScriptCallFrameThisObject(ExecState* exec, JSValue slotBase, const Identifier&)
{
    JSJavaScriptCallFrame* castedThis = static_cast<JSJavaScriptCallFrame*>(asObject(slotBase));
    return castedThis->thisObject(exec);
}