bool
BaseDOMProxyHandler::getOwnPropertyDescriptor(JSContext* cx,
JS::Handle<JSObject*> proxy,
JS::Handle<jsid> id,
MutableHandle<PropertyDescriptor> desc) const
{
return getOwnPropDescriptor(cx, proxy, id, /* ignoreNamedProps = */ false,
desc);
}
bool
DOMProxyHandler::set(JSContext *cx, Handle<JSObject*> proxy, Handle<JSObject*> receiver,
Handle<jsid> id, bool strict, MutableHandle<JS::Value> vp) const
{
MOZ_ASSERT(!xpc::WrapperFactory::IsXrayWrapper(proxy),
"Should not have a XrayWrapper here");
bool done;
if (!setCustom(cx, proxy, id, vp, &done)) {
return false;
}
if (done) {
return true;
}
// Make sure to ignore our named properties when checking for own
// property descriptors for a set.
JS::Rooted<JSPropertyDescriptor> desc(cx);
if (!getOwnPropDescriptor(cx, proxy, id, /* ignoreNamedProps = */ true,
&desc)) {
return false;
}
bool descIsOwn = desc.object() != nullptr;
if (!desc.object()) {
// Don't just use getPropertyDescriptor, unlike BaseProxyHandler::set,
// because that would call getOwnPropertyDescriptor on ourselves. Instead,
// directly delegate to the proto, if any.
JS::Rooted<JSObject*> proto(cx);
if (!js::GetObjectProto(cx, proxy, &proto)) {
return false;
}
if (proto && !JS_GetPropertyDescriptorById(cx, proto, id, &desc)) {
return false;
}
}
return js::SetPropertyIgnoringNamedGetter(cx, this, proxy, receiver, id,
&desc, descIsOwn, strict, vp);
}
bool
DOMProxyHandler::set(JSContext *cx, Handle<JSObject*> proxy, Handle<jsid> id,
Handle<JS::Value> v, Handle<JS::Value> receiver,
ObjectOpResult &result) const
{
MOZ_ASSERT(!xpc::WrapperFactory::IsXrayWrapper(proxy),
"Should not have a XrayWrapper here");
bool done;
if (!setCustom(cx, proxy, id, v, &done)) {
return false;
}
if (done) {
return result.succeed();
}
// Make sure to ignore our named properties when checking for own
// property descriptors for a set.
JS::Rooted<PropertyDescriptor> ownDesc(cx);
if (!getOwnPropDescriptor(cx, proxy, id, /* ignoreNamedProps = */ true,
&ownDesc)) {
return false;
}
return js::SetPropertyIgnoringNamedGetter(cx, proxy, id, v, receiver, ownDesc, result);
}
