Пример #1
0
TiValue TiObject::lookupSetter(TiExcState*, const Identifier& propertyName)
{
    TiObject* object = this;
    while (true) {
        if (TiValue value = object->getDirect(propertyName)) {
            if (!value.isGetterSetter())
                return jsUndefined();
            TiObject* functionObject = asGetterSetter(value)->setter();
            if (!functionObject)
                return jsUndefined();
            return functionObject;
        }

        if (!object->prototype() || !object->prototype().isObject())
            return jsUndefined();
        object = asObject(object->prototype());
    }
}
Пример #2
0
// ECMA 8.6.2.2
void TiObject::put(TiExcState* exec, const Identifier& propertyName, TiValue value, PutPropertySlot& slot)
{
    ASSERT(value);
    ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(this));

    if (propertyName == exec->propertyNames().underscoreProto) {
        // Setting __proto__ to a non-object, non-null value is silently ignored to match Mozilla.
        if (!value.isObject() && !value.isNull())
            return;

        TiValue nextPrototypeValue = value;
        while (nextPrototypeValue && nextPrototypeValue.isObject()) {
            TiObject* nextPrototype = asObject(nextPrototypeValue)->unwrappedObject();
            if (nextPrototype == this) {
                throwError(exec, GeneralError, "cyclic __proto__ value");
                return;
            }
            nextPrototypeValue = nextPrototype->prototype();
        }

        setPrototype(value);
        return;
    }

    // Check if there are any setters or getters in the prototype chain
    TiValue prototype;
    for (TiObject* obj = this; !obj->structure()->hasGetterSetterProperties(); obj = asObject(prototype)) {
        prototype = obj->prototype();
        if (prototype.isNull()) {
            putDirectInternal(exec->globalData(), propertyName, value, 0, true, slot);
            return;
        }
    }
    
    unsigned attributes;
    TiCell* specificValue;
    if ((m_structure->get(propertyName, attributes, specificValue) != WTI::notFound) && attributes & ReadOnly)
        return;

    for (TiObject* obj = this; ; obj = asObject(prototype)) {
        if (TiValue gs = obj->getDirect(propertyName)) {
            if (gs.isGetterSetter()) {
                TiObject* setterFunc = asGetterSetter(gs)->setter();        
                if (!setterFunc) {
                    throwSetterError(exec);
                    return;
                }
                
                CallData callData;
                CallType callType = setterFunc->getCallData(callData);
                MarkedArgumentBuffer args;
                args.append(value);
                call(exec, setterFunc, callType, callData, this, args);
                return;
            }

            // If there's an existing property on the object or one of its 
            // prototypes it should be replaced, so break here.
            break;
        }

        prototype = obj->prototype();
        if (prototype.isNull())
            break;
    }

    putDirectInternal(exec->globalData(), propertyName, value, 0, true, slot);
    return;
}