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());
}
}
// 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;
}