/*!
\internal
\since 4.5
Adds the given \a object to the front of this context's scope chain.
If \a object is not an object, this function does nothing.
*/
void QScriptContext::pushScope(const QScriptValue &object)
{
activationObject(); //ensure the creation of the normal scope for native context
if (!object.isObject())
return;
else if (object.engine() != engine()) {
qWarning("QScriptContext::pushScope() failed: "
"cannot push an object created in "
"a different engine");
return;
}
JSC::CallFrame *frame = QScriptEnginePrivate::frameForContext(this);
QScriptEnginePrivate *engine = QScript::scriptEngineFromExec(frame);
QScript::APIShim shim(engine);
JSC::JSObject *jscObject = JSC::asObject(engine->scriptValueToJSCValue(object));
if (jscObject == engine->originalGlobalObjectProxy)
jscObject = engine->originalGlobalObject();
JSC::ScopeChainNode *scope = frame->scopeChain();
Q_ASSERT(scope != 0);
if (!scope->object) {
// pushing to an "empty" chain
if (!jscObject->isGlobalObject()) {
qWarning("QScriptContext::pushScope() failed: initial object in scope chain has to be the Global Object");
return;
}
scope->object = jscObject;
}
else
frame->setScopeChain(scope->push(jscObject));
}
