void
Promise::Then(JSContext* aCx,
// aCalleeGlobal may not be in the compartment of aCx, when called over
// Xrays.
JS::Handle<JSObject*> aCalleeGlobal,
AnyCallback* aResolveCallback, AnyCallback* aRejectCallback,
JS::MutableHandle<JS::Value> aRetval,
ErrorResult& aRv)
{
NS_ASSERT_OWNINGTHREAD(Promise);
// Let's hope this does the right thing with Xrays... Ensure everything is
// just in the caller compartment; that ought to do the trick. In theory we
// should consider aCalleeGlobal, but in practice our only caller is
// DOMRequest::Then, which is not working with a Promise subclass, so things
// should be OK.
JS::Rooted<JSObject*> promise(aCx, PromiseObj());
if (!JS_WrapObject(aCx, &promise)) {
aRv.NoteJSContextException(aCx);
return;
}
JS::Rooted<JSObject*> resolveCallback(aCx);
if (aResolveCallback) {
resolveCallback = aResolveCallback->CallbackOrNull();
if (!JS_WrapObject(aCx, &resolveCallback)) {
aRv.NoteJSContextException(aCx);
return;
}
}
JS::Rooted<JSObject*> rejectCallback(aCx);
if (aRejectCallback) {
rejectCallback = aRejectCallback->CallbackOrNull();
if (!JS_WrapObject(aCx, &rejectCallback)) {
aRv.NoteJSContextException(aCx);
return;
}
}
JS::Rooted<JSObject*> retval(aCx);
retval = JS::CallOriginalPromiseThen(aCx, promise, resolveCallback,
rejectCallback);
if (!retval) {
aRv.NoteJSContextException(aCx);
return;
}
aRetval.setObject(*retval);
}
bool
WrapperFactory::WaiveXrayAndWrap(JSContext *cx, MutableHandleObject argObj)
{
MOZ_ASSERT(argObj);
RootedObject obj(cx, js::UncheckedUnwrap(argObj));
MOZ_ASSERT(!js::IsInnerObject(obj));
if (js::IsObjectInContextCompartment(obj, cx)) {
argObj.set(obj);
return true;
}
// Even though waivers have no effect on access by scopes that don't subsume
// the underlying object, good defense-in-depth dictates that we should avoid
// handing out waivers to callers that can't use them. The transitive waiving
// machinery unconditionally calls WaiveXrayAndWrap on return values from
// waived functions, even though the return value might be not be same-origin
// with the function. So if we find ourselves trying to create a waiver for
// |cx|, we should check whether the caller has any business with waivers
// to things in |obj|'s compartment.
JSCompartment *target = js::GetContextCompartment(cx);
JSCompartment *origin = js::GetObjectCompartment(obj);
obj = AccessCheck::subsumes(target, origin) ? WaiveXray(cx, obj) : obj;
if (!obj)
return false;
if (!JS_WrapObject(cx, &obj))
return false;
argObj.set(obj);
return true;
}
void
WorkerDebuggerGlobalScope::CreateSandbox(JSContext* aCx, const nsAString& aName,
JS::Handle<JSObject*> aPrototype,
JS::MutableHandle<JSObject*> aResult,
ErrorResult& aRv)
{
mWorkerPrivate->AssertIsOnWorkerThread();
aResult.set(nullptr);
JS::Rooted<JS::Value> protoVal(aCx);
protoVal.setObjectOrNull(aPrototype);
JS::Rooted<JSObject*> sandbox(aCx,
SimpleGlobalObject::Create(SimpleGlobalObject::GlobalType::WorkerDebuggerSandbox,
protoVal));
if (!sandbox) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
if (!JS_WrapObject(aCx, &sandbox)) {
aRv.NoteJSContextException(aCx);
return;
}
aResult.set(sandbox);
}
NS_IMETHODIMP
xpcJSWeakReference::Get(JSContext* aCx, JS::Value* aRetval)
{
*aRetval = JSVAL_NULL;
if (!mWrappedJSObject) {
return NS_OK;
}
nsCOMPtr<nsIXPConnectWrappedJS> wrappedObj = do_QueryReferent(mWrappedJSObject);
if (!wrappedObj) {
return NS_OK;
}
JSObject *obj;
wrappedObj->GetJSObject(&obj);
if (!obj) {
return NS_OK;
}
// Most users of XPCWrappedJS don't need to worry about
// re-wrapping because things are implicitly rewrapped by
// xpcconvert. However, because we're doing this directly
// through the native call context, we need to call
// JS_WrapObject().
if (!JS_WrapObject(aCx, &obj)) {
return NS_ERROR_FAILURE;
}
*aRetval = OBJECT_TO_JSVAL(obj);
return NS_OK;
}
static bool
bootstrap_coverage(GjsCoverage *coverage)
{
GjsCoveragePrivate *priv = (GjsCoveragePrivate *) gjs_coverage_get_instance_private(coverage);
JSContext *context = (JSContext *) gjs_context_get_native_context(priv->context);
JSAutoRequest ar(context);
JSObject *debuggee = gjs_get_import_global(context);
JS::RootedObject debugger_compartment(context,
gjs_create_global_object(context));
{
JSAutoCompartment compartment(context, debugger_compartment);
JS::RootedObject debuggeeWrapper(context, debuggee);
if (!JS_WrapObject(context, &debuggeeWrapper))
return false;
JS::RootedValue debuggeeWrapperValue(context, JS::ObjectValue(*debuggeeWrapper));
if (!JS_SetProperty(context, debugger_compartment, "debuggee",
debuggeeWrapperValue) ||
!gjs_define_global_properties(context, debugger_compartment,
"coverage"))
return false;
/* Add a tracer, as suggested by jdm on #jsapi */
JS_AddExtraGCRootsTracer(context, coverage_tracer, coverage);
priv->compartment = debugger_compartment;
}
return true;
}
static JSObject*
GetDataStoresStructuredCloneCallbacksRead(JSContext* aCx,
JSStructuredCloneReader* aReader,
uint32_t aTag,
uint32_t aData,
void* aClosure)
{
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
MOZ_ASSERT(workerPrivate);
workerPrivate->AssertIsOnWorkerThread();
if (aTag != WORKER_DATA_STORES_TAG) {
MOZ_ASSERT(false, "aTag must be WORKER_DATA_STORES_TAG!");
return nullptr;
}
NS_ASSERTION(!aData, "aData should be empty");
// Read the holder from the buffer, which points to the data store.
nsMainThreadPtrHolder<DataStore>* dataStoreholder;
if (!JS_ReadBytes(aReader, &dataStoreholder, sizeof(dataStoreholder))) {
MOZ_ASSERT(false, "cannot read bytes for dataStoreholder!");
return nullptr;
}
// Protect workerStoreObj from moving GC during ~nsRefPtr.
JS::Rooted<JSObject*> workerStoreObj(aCx, nullptr);
{
nsRefPtr<WorkerDataStore> workerStore =
new WorkerDataStore(workerPrivate->GlobalScope());
nsMainThreadPtrHandle<DataStore> backingStore(dataStoreholder);
// When we're on the worker thread, prepare a DataStoreChangeEventProxy.
nsRefPtr<DataStoreChangeEventProxy> eventProxy =
new DataStoreChangeEventProxy(workerPrivate, workerStore);
// Add the DataStoreChangeEventProxy as an event listener on the main thread.
nsRefPtr<DataStoreAddEventListenerRunnable> runnable =
new DataStoreAddEventListenerRunnable(workerPrivate,
backingStore,
eventProxy);
runnable->Dispatch(aCx);
// Point WorkerDataStore to DataStore.
workerStore->SetBackingDataStore(backingStore);
JS::Rooted<JSObject*> global(aCx, JS::CurrentGlobalOrNull(aCx));
if (!global) {
MOZ_ASSERT(false, "cannot get global!");
} else {
workerStoreObj = workerStore->WrapObject(aCx);
if (!JS_WrapObject(aCx, &workerStoreObj)) {
MOZ_ASSERT(false, "cannot wrap object for workerStoreObj!");
workerStoreObj = nullptr;
}
}
}
return workerStoreObj;
}
static JSObject*
wrap(JSContext* cx, JS::HandleObject toWrap, JS::HandleObject target)
{
JSAutoCompartment ac(cx, target);
JS::RootedObject wrapper(cx, toWrap);
if (!JS_WrapObject(cx, &wrapper))
return nullptr;
return wrapper;
}
static JSObject *
wrap(JSContext *cx, JS::HandleObject toWrap, JS::HandleObject target)
{
JSAutoCompartment ac(cx, target);
JS::RootedObject wrapper(cx, toWrap);
if (!JS_WrapObject(cx, wrapper.address()))
return NULL;
return wrapper;
}
static JSObject *
wrap(JSContext *cx, JSObject *toWrap, JSObject *target)
{
JSAutoEnterCompartment ac;
if (!ac.enter(cx, target))
return NULL;
JSObject *wrapper = toWrap;
if (!JS_WrapObject(cx, &wrapper))
return NULL;
return wrapper;
}
JSObject *
WrapperFactory::WaiveXray(JSContext *cx, JSObject *obj)
{
obj = UnwrapObject(obj);
// We have to make sure that if we're wrapping an outer window, that
// the .wrappedJSObject also wraps the outer window.
obj = GetCurrentOuter(cx, obj);
{
// See if we already have a waiver wrapper for this object.
CompartmentPrivate *priv =
(CompartmentPrivate *)JS_GetCompartmentPrivate(js::GetObjectCompartment(obj));
JSObject *wobj = nsnull;
if (priv && priv->waiverWrapperMap) {
wobj = priv->waiverWrapperMap->Find(obj);
xpc_UnmarkGrayObject(wobj);
}
// No wrapper yet, make one.
if (!wobj) {
JSObject *proto = js::GetObjectProto(obj);
if (proto && !(proto = WaiveXray(cx, proto)))
return nsnull;
JSAutoEnterCompartment ac;
if (!ac.enter(cx, obj) || !JS_WrapObject(cx, &proto))
return nsnull;
wobj = Wrapper::New(cx, obj, proto, JS_GetGlobalForObject(cx, obj),
&WaiveXrayWrapperWrapper);
if (!wobj)
return nsnull;
// Add the new wrapper so we find it next time.
if (priv) {
if (!priv->waiverWrapperMap) {
priv->waiverWrapperMap = JSObject2JSObjectMap::newMap(XPC_WRAPPER_MAP_SIZE);
if (!priv->waiverWrapperMap)
return nsnull;
}
if (!priv->waiverWrapperMap->Add(obj, wobj))
return nsnull;
}
}
obj = wobj;
}
return obj;
}
NS_IMETHODIMP
xpcJSWeakReference::Get(JSContext* aCx, JS::Value* aRetval)
{
*aRetval = JSVAL_NULL;
if (!mReferent) {
return NS_OK;
}
nsCOMPtr<nsISupports> supports = do_QueryReferent(mReferent);
if (!supports) {
return NS_OK;
}
nsCOMPtr<nsIXPConnectWrappedJS> wrappedObj = do_QueryInterface(supports);
if (!wrappedObj) {
// We have a generic XPCOM object that supports weak references here.
// Wrap it and pass it out.
JS::Rooted<JSObject*> global(aCx, JS::CurrentGlobalOrNull(aCx));
return nsContentUtils::WrapNative(aCx, global,
supports, &NS_GET_IID(nsISupports),
aRetval);
}
JS::RootedObject obj(aCx, wrappedObj->GetJSObject());
if (!obj) {
return NS_OK;
}
// Most users of XPCWrappedJS don't need to worry about
// re-wrapping because things are implicitly rewrapped by
// xpcconvert. However, because we're doing this directly
// through the native call context, we need to call
// JS_WrapObject().
if (!JS_WrapObject(aCx, obj.address())) {
return NS_ERROR_FAILURE;
}
*aRetval = OBJECT_TO_JSVAL(obj);
return NS_OK;
}
JSObject* newCCW(JS::HandleObject sourceZone, JS::HandleObject destZone)
{
/*
* Now ensure that this zone will be swept first by adding a cross
* compartment wrapper to a new objct in the same zone as the
* delegate obejct.
*/
JS::RootedObject object(cx);
{
JSAutoCompartment ac(cx, destZone);
object = JS_NewPlainObject(cx);
if (!object)
return nullptr;
}
{
JSAutoCompartment ac(cx, sourceZone);
if (!JS_WrapObject(cx, &object))
return nullptr;
}
return object;
}
// static
already_AddRefed<Promise>
Promise::All(const GlobalObject& aGlobal,
const nsTArray<RefPtr<Promise>>& aPromiseList, ErrorResult& aRv)
{
nsCOMPtr<nsIGlobalObject> global;
global = do_QueryInterface(aGlobal.GetAsSupports());
if (!global) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return nullptr;
}
JSContext* cx = aGlobal.Context();
JS::AutoObjectVector promises(cx);
if (!promises.reserve(aPromiseList.Length())) {
aRv.NoteJSContextException(cx);
return nullptr;
}
for (auto& promise : aPromiseList) {
JS::Rooted<JSObject*> promiseObj(cx, promise->PromiseObj());
// Just in case, make sure these are all in the context compartment.
if (!JS_WrapObject(cx, &promiseObj)) {
aRv.NoteJSContextException(cx);
return nullptr;
}
promises.infallibleAppend(promiseObj);
}
JS::Rooted<JSObject*> result(cx, JS::GetWaitForAllPromise(cx, promises));
if (!result) {
aRv.NoteJSContextException(cx);
return nullptr;
}
return CreateFromExisting(global, result);
}
nsresult
nsXBLProtoImplMethod::InstallMember(JSContext* aCx,
JSObject* aTargetClassObject)
{
NS_PRECONDITION(IsCompiled(),
"Should not be installing an uncompiled method");
MOZ_ASSERT(js::IsObjectInContextCompartment(aTargetClassObject, aCx));
JSObject* globalObject = JS_GetGlobalForObject(aCx, aTargetClassObject);
JSObject* scopeObject = xpc::GetXBLScope(aCx, globalObject);
// now we want to reevaluate our property using aContext and the script object for this window...
if (mJSMethodObject) {
nsDependentString name(mName);
// First, make the function in the compartment of the scope object.
JSAutoCompartment ac(aCx, scopeObject);
JSObject * method = ::JS_CloneFunctionObject(aCx, mJSMethodObject, scopeObject);
if (!method) {
return NS_ERROR_OUT_OF_MEMORY;
}
// Then, enter the content compartment, wrap the method pointer, and define
// the wrapped version on the class object.
JSAutoCompartment ac2(aCx, aTargetClassObject);
if (!JS_WrapObject(aCx, &method) ||
!::JS_DefineUCProperty(aCx, aTargetClassObject,
static_cast<const jschar*>(mName),
name.Length(), OBJECT_TO_JSVAL(method),
NULL, NULL,
JSPROP_ENUMERATE | JSPROP_READONLY | JSPROP_PERMANENT)) {
return NS_ERROR_OUT_OF_MEMORY;
}
}
return NS_OK;
}
JSObject *
WrapperFactory::CreateXrayWaiver(JSContext *cx, HandleObject obj)
{
// The caller is required to have already done a lookup.
// NB: This implictly performs the assertions of GetXrayWaiver.
MOZ_ASSERT(!GetXrayWaiver(obj));
XPCWrappedNativeScope *scope = GetObjectScope(obj);
// Get a waiver for the proto.
JSObject *proto;
if (!js::GetObjectProto(cx, obj, &proto))
return nullptr;
if (proto && !(proto = WaiveXray(cx, proto)))
return nullptr;
// Create the waiver.
JSAutoCompartment ac(cx, obj);
if (!JS_WrapObject(cx, &proto))
return nullptr;
JSObject *waiver = Wrapper::New(cx, obj, proto,
JS_GetGlobalForObject(cx, obj),
&XrayWaiver);
if (!waiver)
return nullptr;
// Add the new waiver to the map. It's important that we only ever have
// one waiver for the lifetime of the target object.
if (!scope->mWaiverWrapperMap) {
scope->mWaiverWrapperMap =
JSObject2JSObjectMap::newMap(XPC_WRAPPER_MAP_SIZE);
MOZ_ASSERT(scope->mWaiverWrapperMap);
}
if (!scope->mWaiverWrapperMap->Add(obj, waiver))
return nullptr;
return waiver;
}
nsresult
nsXBLProtoImplAnonymousMethod::Execute(nsIContent* aBoundElement)
{
NS_PRECONDITION(IsCompiled(), "Can't execute uncompiled method");
if (!mJSMethodObject) {
// Nothing to do here
return NS_OK;
}
// Get the script context the same way
// nsXBLProtoImpl::InstallImplementation does.
nsIDocument* document = aBoundElement->OwnerDoc();
nsIScriptGlobalObject* global = document->GetScriptGlobalObject();
if (!global) {
return NS_OK;
}
nsCOMPtr<nsIScriptContext> context = global->GetContext();
if (!context) {
return NS_OK;
}
nsAutoMicroTask mt;
JSContext* cx = context->GetNativeContext();
JSObject* globalObject = global->GetGlobalJSObject();
nsCOMPtr<nsIXPConnectJSObjectHolder> wrapper;
jsval v;
nsresult rv =
nsContentUtils::WrapNative(cx, globalObject, aBoundElement, &v,
getter_AddRefs(wrapper));
NS_ENSURE_SUCCESS(rv, rv);
// Use nsCxPusher to make sure we call ScriptEvaluated when we're done.
//
// Make sure to do this before entering the compartment, since pushing Push()
// may call JS_SaveFrameChain(), which puts us back in an unentered state.
nsCxPusher pusher;
NS_ENSURE_STATE(pusher.Push(aBoundElement));
MOZ_ASSERT(cx == nsContentUtils::GetCurrentJSContext());
JSObject* thisObject = JSVAL_TO_OBJECT(v);
JSObject* scopeObject = xpc::GetXBLScope(cx, globalObject);
JSAutoRequest ar(cx);
JSAutoCompartment ac(cx, scopeObject);
if (!JS_WrapObject(cx, &thisObject))
return NS_ERROR_OUT_OF_MEMORY;
// Clone the function object, using thisObject as the parent so "this" is in
// the scope chain of the resulting function (for backwards compat to the
// days when this was an event handler).
JSObject* method = ::JS_CloneFunctionObject(cx, mJSMethodObject, thisObject);
if (!method)
return NS_ERROR_OUT_OF_MEMORY;
// Now call the method
// Check whether it's OK to call the method.
rv = nsContentUtils::GetSecurityManager()->CheckFunctionAccess(cx, method,
thisObject);
JSBool ok = JS_TRUE;
if (NS_SUCCEEDED(rv)) {
jsval retval;
ok = ::JS_CallFunctionValue(cx, thisObject, OBJECT_TO_JSVAL(method),
0 /* argc */, nullptr /* argv */, &retval);
}
if (!ok) {
// If a constructor or destructor threw an exception, it doesn't stop
// anything else. We just report it. Note that we need to set aside the
// frame chain here, since the constructor invocation is not related to
// whatever is on the stack right now, really.
JSBool saved = JS_SaveFrameChain(cx);
JS_ReportPendingException(cx);
if (saved)
JS_RestoreFrameChain(cx);
return NS_ERROR_FAILURE;
}
return NS_OK;
}
// static
JSObject*
SimpleGlobalObject::Create(GlobalType globalType, JS::Handle<JS::Value> proto)
{
// We can't root our return value with our AutoJSAPI because the rooting
// analysis thinks ~AutoJSAPI can GC. So we need to root in a scope outside
// the lifetime of the AutoJSAPI.
JS::Rooted<JSObject*> global(RootingCx());
{ // Scope to ensure the AutoJSAPI destructor runs before we end up returning
AutoJSAPI jsapi;
jsapi.Init();
JSContext* cx = jsapi.cx();
JS::CompartmentOptions options;
options.creationOptions()
.setInvisibleToDebugger(true)
// Put our SimpleGlobalObjects in the system zone, so we won't create
// lots of zones for what are probably very short-lived
// compartments. This should help them be GCed quicker and take up
// less memory before they're GCed.
.setZone(JS::SystemZone);
if (NS_IsMainThread()) {
nsCOMPtr<nsIPrincipal> principal = nsNullPrincipal::Create();
options.creationOptions().setTrace(xpc::TraceXPCGlobal);
global = xpc::CreateGlobalObject(cx, js::Jsvalify(&SimpleGlobalClass),
nsJSPrincipals::get(principal),
options);
} else {
global = JS_NewGlobalObject(cx, js::Jsvalify(&SimpleGlobalClass),
nullptr,
JS::DontFireOnNewGlobalHook, options);
}
if (!global) {
jsapi.ClearException();
return nullptr;
}
JSAutoCompartment ac(cx, global);
// It's important to create the nsIGlobalObject for our new global before we
// start trying to wrap things like the prototype into its compartment,
// because the wrap operation relies on the global having its
// nsIGlobalObject already.
RefPtr<SimpleGlobalObject> globalObject =
new SimpleGlobalObject(global, globalType);
// Pass on ownership of globalObject to |global|.
JS_SetPrivate(global, globalObject.forget().take());
if (proto.isObjectOrNull()) {
JS::Rooted<JSObject*> protoObj(cx, proto.toObjectOrNull());
if (!JS_WrapObject(cx, &protoObj)) {
jsapi.ClearException();
return nullptr;
}
if (!JS_SplicePrototype(cx, global, protoObj)) {
jsapi.ClearException();
return nullptr;
}
} else if (!proto.isUndefined()) {
// Bogus proto.
return nullptr;
}
JS_FireOnNewGlobalObject(cx, global);
}
return global;
}
/* static */
bool WebIDLGlobalNameHash::DefineIfEnabled(
JSContext* aCx, JS::Handle<JSObject*> aObj, JS::Handle<jsid> aId,
JS::MutableHandle<JS::PropertyDescriptor> aDesc, bool* aFound) {
MOZ_ASSERT(JSID_IS_STRING(aId), "Check for string id before calling this!");
const WebIDLNameTableEntry* entry;
{ entry = GetEntry(JSID_TO_FLAT_STRING(aId)); }
if (!entry) {
*aFound = false;
return true;
}
*aFound = true;
ConstructorEnabled checkEnabledForScope = entry->mEnabled;
// We do the enabled check on the current Realm of aCx, but for the
// actual object we pass in the underlying object in the Xray case. That
// way the callee can decide whether to allow access based on the caller
// or the window being touched.
//
// Using aCx to represent the current Realm for CheckedUnwrapDynamic
// purposes is OK here, because that's the Realm where we plan to do
// our property-defining.
JS::Rooted<JSObject*> global(
aCx,
js::CheckedUnwrapDynamic(aObj, aCx, /* stopAtWindowProxy = */ false));
if (!global) {
return Throw(aCx, NS_ERROR_DOM_SECURITY_ERR);
}
{
// It's safe to pass "&global" here, because we've already unwrapped it, but
// for general sanity better to not have debug code even having the
// appearance of mutating things that opt code uses.
#ifdef DEBUG
JS::Rooted<JSObject*> temp(aCx, global);
DebugOnly<nsGlobalWindowInner*> win;
MOZ_ASSERT(NS_SUCCEEDED(
UNWRAP_MAYBE_CROSS_ORIGIN_OBJECT(Window, &temp, win, aCx)));
#endif
}
if (checkEnabledForScope && !checkEnabledForScope(aCx, global)) {
return true;
}
// The DOM constructor resolve machinery interacts with Xrays in tricky
// ways, and there are some asymmetries that are important to understand.
//
// In the regular (non-Xray) case, we only want to resolve constructors
// once (so that if they're deleted, they don't reappear). We do this by
// stashing the constructor in a slot on the global, such that we can see
// during resolve whether we've created it already. This is rather
// memory-intensive, so we don't try to maintain these semantics when
// manipulating a global over Xray (so the properties just re-resolve if
// they've been deleted).
//
// Unfortunately, there's a bit of an impedance-mismatch between the Xray
// and non-Xray machinery. The Xray machinery wants an API that returns a
// JS::PropertyDescriptor, so that the resolve hook doesn't have to get
// snared up with trying to define a property on the Xray holder. At the
// same time, the DefineInterface callbacks are set up to define things
// directly on the global. And re-jiggering them to return property
// descriptors is tricky, because some DefineInterface callbacks define
// multiple things (like the Image() alias for HTMLImageElement).
//
// So the setup is as-follows:
//
// * The resolve function takes a JS::PropertyDescriptor, but in the
// non-Xray case, callees may define things directly on the global, and
// set the value on the property descriptor to |undefined| to indicate
// that there's nothing more for the caller to do. We assert against
// this behavior in the Xray case.
//
// * We make sure that we do a non-Xray resolve first, so that all the
// slots are set up. In the Xray case, this means unwrapping and doing
// a non-Xray resolve before doing the Xray resolve.
//
// This all could use some grand refactoring, but for now we just limp
// along.
if (xpc::WrapperFactory::IsXrayWrapper(aObj)) {
JS::Rooted<JSObject*> constructor(aCx);
{
JSAutoRealm ar(aCx, global);
constructor = FindNamedConstructorForXray(aCx, aId, entry);
}
if (NS_WARN_IF(!constructor)) {
return Throw(aCx, NS_ERROR_FAILURE);
}
if (!JS_WrapObject(aCx, &constructor)) {
return Throw(aCx, NS_ERROR_FAILURE);
}
FillPropertyDescriptor(aDesc, aObj, 0, JS::ObjectValue(*constructor));
return true;
}
JS::Rooted<JSObject*> interfaceObject(
aCx,
GetPerInterfaceObjectHandle(aCx, entry->mConstructorId, entry->mCreate,
/* aDefineOnGlobal = */ true));
if (NS_WARN_IF(!interfaceObject)) {
return Throw(aCx, NS_ERROR_FAILURE);
}
// We've already defined the property. We indicate this to the caller
// by filling a property descriptor with JS::UndefinedValue() as the
// value. We still have to fill in a property descriptor, though, so
// that the caller knows the property is in fact on this object. It
// doesn't matter what we pass for the "readonly" argument here.
FillPropertyDescriptor(aDesc, aObj, JS::UndefinedValue(), false);
return true;
}
