EncodedJSValue JSC_HOST_CALL jsHTMLDocumentPrototypeFunctionOpen(ExecState* exec) { JSValue thisValue = exec->hostThisValue(); if (!thisValue.inherits(&JSHTMLDocument::s_info)) return throwVMTypeError(exec); JSHTMLDocument* castedThis = static_cast<JSHTMLDocument*>(asObject(thisValue)); return JSValue::encode(castedThis->open(exec)); }