// ECMA 8.6.2.2
void JSObject::put(ExecState* exec, const Identifier& propertyName, JSValue 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;
if (!setPrototypeWithCycleCheck(value))
throwError(exec, createError(exec, "cyclic __proto__ value"));
return;
}
// Check if there are any setters or getters in the prototype chain
JSValue prototype;
for (JSObject* 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;
JSCell* specificValue;
if ((m_structure->get(propertyName, attributes, specificValue) != WTF::notFound) && attributes & ReadOnly)
return;
for (JSObject* obj = this; ; obj = asObject(prototype)) {
if (JSValue gs = obj->getDirect(propertyName)) {
if (gs.isGetterSetter()) {
JSObject* 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;
}
void JSObject::defineSetter(ExecState* exec, const Identifier& propertyName, JSObject* setterFunction, unsigned attributes)
{
JSValue object = getDirect(propertyName);
if (object && object.isGetterSetter()) {
ASSERT(m_structure->hasGetterSetterProperties());
asGetterSetter(object)->setSetter(setterFunction);
return;
}
PutPropertySlot slot;
GetterSetter* getterSetter = new (exec) GetterSetter(exec);
putDirectInternal(exec->globalData(), propertyName, getterSetter, attributes | Setter, true, slot);
// putDirect will change our Structure if we add a new property. For
// getters and setters, though, we also need to change our Structure
// if we override an existing non-getter or non-setter.
if (slot.type() != PutPropertySlot::NewProperty) {
if (!m_structure->isDictionary()) {
RefPtr<Structure> structure = Structure::getterSetterTransition(m_structure);
setStructure(structure.release());
}
}
m_structure->setHasGetterSetterProperties(true);
getterSetter->setSetter(setterFunction);
}
void JSObject::putWithAttributes(ExecState* exec, const Identifier& propertyName, JSValue value, unsigned attributes)
{
putDirectInternal(exec->globalData(), propertyName, value, attributes);
}
void JSObject::putWithAttributes(ExecState* exec, const Identifier& propertyName, JSValue value, unsigned attributes, bool checkReadOnly, PutPropertySlot& slot)
{
putDirectInternal(exec->globalData(), propertyName, value, attributes, checkReadOnly, slot);
}
void JSObject::putWithAttributes(JSGlobalData* globalData, const Identifier& propertyName, JSValue value, unsigned attributes)
{
putDirectInternal(*globalData, propertyName, value, attributes);
}
void JSObject::putWithAttributes(JSGlobalData* globalData, const Identifier& propertyName, JSValue value, unsigned attributes, bool checkReadOnly, PutPropertySlot& slot)
{
putDirectInternal(*globalData, propertyName, value, attributes, checkReadOnly, slot);
}
