Line data Source code
1 : /* THIS FILE IS AUTOGENERATED FROM ChannelMergerNode.webidl BY Codegen.py - DO NOT EDIT */
2 :
3 : #include "AtomList.h"
4 : #include "AudioNodeBinding.h"
5 : #include "ChannelMergerNodeBinding.h"
6 : #include "WrapperFactory.h"
7 : #include "mozilla/OwningNonNull.h"
8 : #include "mozilla/Preferences.h"
9 : #include "mozilla/dom/AudioContext.h"
10 : #include "mozilla/dom/BindingUtils.h"
11 : #include "mozilla/dom/ChannelMergerNode.h"
12 : #include "mozilla/dom/DOMJSClass.h"
13 : #include "mozilla/dom/NonRefcountedDOMObject.h"
14 : #include "mozilla/dom/PrimitiveConversions.h"
15 : #include "mozilla/dom/ScriptSettings.h"
16 : #include "mozilla/dom/SimpleGlobalObject.h"
17 : #include "mozilla/dom/XrayExpandoClass.h"
18 :
19 : namespace mozilla {
20 : namespace dom {
21 :
22 :
23 0 : ChannelMergerOptions::ChannelMergerOptions()
24 0 : : AudioNodeOptions(FastDictionaryInitializer())
25 : {
26 : // Safe to pass a null context if we pass a null value
27 0 : Init(nullptr, JS::NullHandleValue);
28 0 : }
29 :
30 :
31 :
32 : bool
33 0 : ChannelMergerOptions::InitIds(JSContext* cx, ChannelMergerOptionsAtoms* atomsCache)
34 : {
35 0 : MOZ_ASSERT(!*reinterpret_cast<jsid**>(atomsCache));
36 :
37 : // Initialize these in reverse order so that any failure leaves the first one
38 : // uninitialized.
39 0 : if (!atomsCache->numberOfInputs_id.init(cx, "numberOfInputs")) {
40 0 : return false;
41 : }
42 0 : return true;
43 : }
44 :
45 : bool
46 0 : ChannelMergerOptions::Init(JSContext* cx, JS::Handle<JS::Value> val, const char* sourceDescription, bool passedToJSImpl)
47 : {
48 : // Passing a null JSContext is OK only if we're initing from null,
49 : // Since in that case we will not have to do any property gets
50 : // Also evaluate isNullOrUndefined in order to avoid false-positive
51 : // checkers by static analysis tools
52 0 : MOZ_ASSERT_IF(!cx, val.isNull() && val.isNullOrUndefined());
53 0 : ChannelMergerOptionsAtoms* atomsCache = nullptr;
54 0 : if (cx) {
55 0 : atomsCache = GetAtomCache<ChannelMergerOptionsAtoms>(cx);
56 0 : if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {
57 0 : return false;
58 : }
59 : }
60 :
61 : // Per spec, we init the parent's members first
62 0 : if (!AudioNodeOptions::Init(cx, val)) {
63 0 : return false;
64 : }
65 :
66 0 : bool isNull = val.isNullOrUndefined();
67 : // We only need these if !isNull, in which case we have |cx|.
68 0 : Maybe<JS::Rooted<JSObject *> > object;
69 0 : Maybe<JS::Rooted<JS::Value> > temp;
70 0 : if (!isNull) {
71 0 : MOZ_ASSERT(cx);
72 0 : object.emplace(cx, &val.toObject());
73 0 : temp.emplace(cx);
74 : }
75 0 : if (!isNull) {
76 0 : if (!JS_GetPropertyById(cx, *object, atomsCache->numberOfInputs_id, temp.ptr())) {
77 0 : return false;
78 : }
79 : }
80 0 : if (!isNull && !temp->isUndefined()) {
81 0 : if (!ValueToPrimitive<uint32_t, eDefault>(cx, temp.ref(), &mNumberOfInputs)) {
82 0 : return false;
83 : }
84 : } else {
85 0 : mNumberOfInputs = 6U;
86 : }
87 0 : mIsAnyMemberPresent = true;
88 0 : return true;
89 : }
90 :
91 : bool
92 0 : ChannelMergerOptions::Init(const nsAString& aJSON)
93 : {
94 0 : AutoJSAPI jsapi;
95 0 : JSObject* cleanGlobal = SimpleGlobalObject::Create(SimpleGlobalObject::GlobalType::BindingDetail);
96 0 : if (!cleanGlobal) {
97 0 : return false;
98 : }
99 0 : if (!jsapi.Init(cleanGlobal)) {
100 0 : return false;
101 : }
102 0 : JSContext* cx = jsapi.cx();
103 0 : JS::Rooted<JS::Value> json(cx);
104 0 : bool ok = ParseJSON(cx, aJSON, &json);
105 0 : NS_ENSURE_TRUE(ok, false);
106 0 : return Init(cx, json);
107 : }
108 :
109 : bool
110 0 : ChannelMergerOptions::ToObjectInternal(JSContext* cx, JS::MutableHandle<JS::Value> rval) const
111 : {
112 0 : ChannelMergerOptionsAtoms* atomsCache = GetAtomCache<ChannelMergerOptionsAtoms>(cx);
113 0 : if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {
114 0 : return false;
115 : }
116 :
117 : // Per spec, we define the parent's members first
118 0 : if (!AudioNodeOptions::ToObjectInternal(cx, rval)) {
119 0 : return false;
120 : }
121 0 : JS::Rooted<JSObject*> obj(cx, &rval.toObject());
122 :
123 : do {
124 : // block for our 'break' successCode and scope for 'temp' and 'currentValue'
125 0 : JS::Rooted<JS::Value> temp(cx);
126 0 : uint32_t const & currentValue = mNumberOfInputs;
127 0 : temp.setNumber(currentValue);
128 0 : if (!JS_DefinePropertyById(cx, obj, atomsCache->numberOfInputs_id, temp, JSPROP_ENUMERATE)) {
129 0 : return false;
130 : }
131 0 : break;
132 : } while(0);
133 :
134 0 : return true;
135 : }
136 :
137 : bool
138 0 : ChannelMergerOptions::ToJSON(nsAString& aJSON) const
139 : {
140 0 : AutoJSAPI jsapi;
141 0 : jsapi.Init();
142 0 : JSContext *cx = jsapi.cx();
143 : // It's safe to use UnprivilegedJunkScopeOrWorkerGlobal here
144 : // because we'll only be creating objects, in ways that have no
145 : // side-effects, followed by a call to JS::ToJSONMaybeSafely,
146 : // which likewise guarantees no side-effects for the sorts of
147 : // things we will pass it.
148 0 : JSAutoCompartment ac(cx, binding_detail::UnprivilegedJunkScopeOrWorkerGlobal());
149 0 : JS::Rooted<JS::Value> val(cx);
150 0 : if (!ToObjectInternal(cx, &val)) {
151 0 : return false;
152 : }
153 0 : JS::Rooted<JSObject*> obj(cx, &val.toObject());
154 0 : return StringifyToJSON(cx, obj, aJSON);
155 : }
156 :
157 : void
158 0 : ChannelMergerOptions::TraceDictionary(JSTracer* trc)
159 : {
160 0 : AudioNodeOptions::TraceDictionary(trc);
161 0 : }
162 :
163 : ChannelMergerOptions&
164 0 : ChannelMergerOptions::operator=(const ChannelMergerOptions& aOther)
165 : {
166 0 : AudioNodeOptions::operator=(aOther);
167 0 : mNumberOfInputs = aOther.mNumberOfInputs;
168 0 : return *this;
169 : }
170 :
171 : namespace binding_detail {
172 : } // namespace binding_detail
173 :
174 :
175 : namespace ChannelMergerNodeBinding {
176 :
177 : static_assert(IsRefcounted<NativeType>::value == IsRefcounted<AudioNodeBinding::NativeType>::value,
178 : "Can't inherit from an interface with a different ownership model.");
179 :
180 : static bool
181 0 : _addProperty(JSContext* cx, JS::Handle<JSObject*> obj, JS::Handle<jsid> id, JS::Handle<JS::Value> val)
182 : {
183 0 : mozilla::dom::ChannelMergerNode* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::ChannelMergerNode>(obj);
184 : // We don't want to preserve if we don't have a wrapper, and we
185 : // obviously can't preserve if we're not initialized.
186 0 : if (self && self->GetWrapperPreserveColor()) {
187 0 : PreserveWrapper(self);
188 : }
189 0 : return true;
190 : }
191 :
192 : static void
193 0 : _finalize(js::FreeOp* fop, JSObject* obj)
194 : {
195 0 : mozilla::dom::ChannelMergerNode* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::ChannelMergerNode>(obj);
196 0 : if (self) {
197 0 : ClearWrapper(self, self, obj);
198 0 : AddForDeferredFinalization<mozilla::dom::ChannelMergerNode>(self);
199 : }
200 0 : }
201 :
202 : static void
203 0 : _objectMoved(JSObject* obj, const JSObject* old)
204 : {
205 0 : mozilla::dom::ChannelMergerNode* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::ChannelMergerNode>(obj);
206 0 : if (self) {
207 0 : UpdateWrapper(self, self, obj, old);
208 : }
209 0 : }
210 :
211 : static bool
212 0 : _constructor(JSContext* cx, unsigned argc, JS::Value* vp)
213 : {
214 0 : JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
215 0 : JS::Rooted<JSObject*> obj(cx, &args.callee());
216 0 : if (!args.isConstructing()) {
217 : // XXXbz wish I could get the name from the callee instead of
218 : // Adding more relocations
219 0 : return ThrowConstructorWithoutNew(cx, "ChannelMergerNode");
220 : }
221 :
222 0 : GlobalObject global(cx, obj);
223 0 : if (global.Failed()) {
224 0 : return false;
225 : }
226 :
227 0 : JS::Rooted<JSObject*> desiredProto(cx);
228 0 : if (!GetDesiredProto(cx, args, &desiredProto)) {
229 0 : return false;
230 : }
231 :
232 0 : if (MOZ_UNLIKELY(args.length() < 1)) {
233 0 : return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "ChannelMergerNode");
234 : }
235 0 : bool objIsXray = xpc::WrapperFactory::IsXrayWrapper(obj);
236 0 : NonNull<mozilla::dom::AudioContext> arg0;
237 0 : if (args[0].isObject()) {
238 : {
239 0 : nsresult rv = UnwrapObject<prototypes::id::BaseAudioContext, mozilla::dom::AudioContext>(args[0], arg0);
240 0 : if (NS_FAILED(rv)) {
241 0 : ThrowErrorMessage(cx, MSG_DOES_NOT_IMPLEMENT_INTERFACE, "Argument 1 of ChannelMergerNode.constructor", "BaseAudioContext");
242 0 : return false;
243 : }
244 : }
245 : } else {
246 0 : ThrowErrorMessage(cx, MSG_NOT_OBJECT, "Argument 1 of ChannelMergerNode.constructor");
247 0 : return false;
248 : }
249 0 : binding_detail::FastChannelMergerOptions arg1;
250 0 : if (!arg1.Init(cx, (args.hasDefined(1)) ? args[1] : JS::NullHandleValue, "Argument 2 of ChannelMergerNode.constructor", false)) {
251 0 : return false;
252 : }
253 0 : Maybe<JSAutoCompartment> ac;
254 0 : if (objIsXray) {
255 0 : obj = js::CheckedUnwrap(obj);
256 0 : if (!obj) {
257 0 : return false;
258 : }
259 0 : ac.emplace(cx, obj);
260 0 : if (!JS_WrapObject(cx, &desiredProto)) {
261 0 : return false;
262 : }
263 : }
264 0 : binding_detail::FastErrorResult rv;
265 0 : auto result(StrongOrRawPtr<mozilla::dom::ChannelMergerNode>(mozilla::dom::ChannelMergerNode::Constructor(global, NonNullHelper(arg0), Constify(arg1), rv)));
266 0 : if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
267 0 : return false;
268 : }
269 0 : MOZ_ASSERT(!JS_IsExceptionPending(cx));
270 : static_assert(!IsPointer<decltype(result)>::value,
271 : "NewObject implies that we need to keep the object alive with a strong reference.");
272 0 : if (!GetOrCreateDOMReflector(cx, result, args.rval(), desiredProto)) {
273 0 : MOZ_ASSERT(true || JS_IsExceptionPending(cx));
274 0 : return false;
275 : }
276 0 : return true;
277 : }
278 :
279 : static const js::ClassOps sInterfaceObjectClassOps = {
280 : nullptr, /* addProperty */
281 : nullptr, /* delProperty */
282 : nullptr, /* getProperty */
283 : nullptr, /* setProperty */
284 : nullptr, /* enumerate */
285 : nullptr, /* newEnumerate */
286 : nullptr, /* resolve */
287 : nullptr, /* mayResolve */
288 : nullptr, /* finalize */
289 : _constructor, /* call */
290 : nullptr, /* hasInstance */
291 : _constructor, /* construct */
292 : nullptr, /* trace */
293 : };
294 :
295 : static const DOMIfaceAndProtoJSClass sInterfaceObjectClass = {
296 : {
297 : "Function",
298 : JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_SLOTS_BASE),
299 : &sInterfaceObjectClassOps,
300 : JS_NULL_CLASS_SPEC,
301 : JS_NULL_CLASS_EXT,
302 : &sInterfaceObjectClassObjectOps
303 : },
304 : eInterface,
305 : true,
306 : prototypes::id::ChannelMergerNode,
307 : PrototypeTraits<prototypes::id::ChannelMergerNode>::Depth,
308 : sNativePropertyHooks,
309 : "function ChannelMergerNode() {\n [native code]\n}",
310 : AudioNodeBinding::GetConstructorObject
311 : };
312 :
313 : static const DOMIfaceAndProtoJSClass sPrototypeClass = {
314 : {
315 : "ChannelMergerNodePrototype",
316 : JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE),
317 : JS_NULL_CLASS_OPS,
318 : JS_NULL_CLASS_SPEC,
319 : JS_NULL_CLASS_EXT,
320 : JS_NULL_OBJECT_OPS
321 : },
322 : eInterfacePrototype,
323 : false,
324 : prototypes::id::ChannelMergerNode,
325 : PrototypeTraits<prototypes::id::ChannelMergerNode>::Depth,
326 : sNativePropertyHooks,
327 : "[object ChannelMergerNodePrototype]",
328 : AudioNodeBinding::GetProtoObject
329 : };
330 :
331 : bool
332 0 : ConstructorEnabled(JSContext* aCx, JS::Handle<JSObject*> aObj)
333 : {
334 : static bool sPrefValue;
335 : static bool sPrefCacheSetUp = false;
336 0 : if (!sPrefCacheSetUp) {
337 0 : sPrefCacheSetUp = true;
338 0 : Preferences::AddBoolVarCache(&sPrefValue, "dom.webaudio.enabled");
339 : }
340 :
341 0 : return sPrefValue;
342 : }
343 :
344 : JSObject*
345 0 : DefineDOMInterface(JSContext* aCx, JS::Handle<JSObject*> aGlobal, JS::Handle<jsid> id, bool aDefineOnGlobal)
346 : {
347 0 : return GetConstructorObjectHandle(aCx, aDefineOnGlobal);
348 : }
349 :
350 : static const js::ClassOps sClassOps = {
351 : _addProperty, /* addProperty */
352 : nullptr, /* delProperty */
353 : nullptr, /* getProperty */
354 : nullptr, /* setProperty */
355 : nullptr, /* enumerate */
356 : nullptr, /* newEnumerate */
357 : nullptr, /* resolve */
358 : nullptr, /* mayResolve */
359 : _finalize, /* finalize */
360 : nullptr, /* call */
361 : nullptr, /* hasInstance */
362 : nullptr, /* construct */
363 : nullptr, /* trace */
364 : };
365 :
366 : static const js::ClassExtension sClassExtension = {
367 : nullptr, /* weakmapKeyDelegateOp */
368 : _objectMoved /* objectMovedOp */
369 : };
370 :
371 : static const DOMJSClass sClass = {
372 : { "ChannelMergerNode",
373 : JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(1),
374 : &sClassOps,
375 : JS_NULL_CLASS_SPEC,
376 : &sClassExtension,
377 : JS_NULL_OBJECT_OPS
378 : },
379 : { prototypes::id::EventTarget, prototypes::id::AudioNode, prototypes::id::ChannelMergerNode, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count },
380 : IsBaseOf<nsISupports, mozilla::dom::ChannelMergerNode >::value,
381 : sNativePropertyHooks,
382 : FindAssociatedGlobalForNative<mozilla::dom::ChannelMergerNode>::Get,
383 : GetProtoObjectHandle,
384 : GetCCParticipant<mozilla::dom::ChannelMergerNode>::Get()
385 : };
386 : static_assert(1 == DOM_INSTANCE_RESERVED_SLOTS,
387 : "Must have the right minimal number of reserved slots.");
388 : static_assert(1 >= 1,
389 : "Must have enough reserved slots.");
390 :
391 : const JSClass*
392 0 : GetJSClass()
393 : {
394 0 : return sClass.ToJSClass();
395 : }
396 :
397 : bool
398 0 : Wrap(JSContext* aCx, mozilla::dom::ChannelMergerNode* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
399 : {
400 : MOZ_ASSERT(static_cast<mozilla::dom::ChannelMergerNode*>(aObject) ==
401 : reinterpret_cast<mozilla::dom::ChannelMergerNode*>(aObject),
402 : "Multiple inheritance for mozilla::dom::ChannelMergerNode is broken.");
403 : MOZ_ASSERT(static_cast<mozilla::dom::AudioNode*>(aObject) ==
404 : reinterpret_cast<mozilla::dom::AudioNode*>(aObject),
405 : "Multiple inheritance for mozilla::dom::AudioNode is broken.");
406 : MOZ_ASSERT(static_cast<mozilla::dom::EventTarget*>(aObject) ==
407 : reinterpret_cast<mozilla::dom::EventTarget*>(aObject),
408 : "Multiple inheritance for mozilla::dom::EventTarget is broken.");
409 0 : MOZ_ASSERT(ToSupportsIsCorrect(aObject));
410 0 : MOZ_ASSERT_IF(aGivenProto, js::IsObjectInContextCompartment(aGivenProto, aCx));
411 0 : MOZ_ASSERT(!aCache->GetWrapper(),
412 : "You should probably not be using Wrap() directly; use "
413 : "GetOrCreateDOMReflector instead");
414 :
415 0 : MOZ_ASSERT(ToSupportsIsOnPrimaryInheritanceChain(aObject, aCache),
416 : "nsISupports must be on our primary inheritance chain");
417 :
418 0 : JS::Rooted<JSObject*> global(aCx, FindAssociatedGlobal(aCx, aObject->GetParentObject()));
419 0 : if (!global) {
420 0 : return false;
421 : }
422 0 : MOZ_ASSERT(JS_IsGlobalObject(global));
423 0 : MOZ_ASSERT(JS::ObjectIsNotGray(global));
424 :
425 : // That might have ended up wrapping us already, due to the wonders
426 : // of XBL. Check for that, and bail out as needed.
427 0 : aReflector.set(aCache->GetWrapper());
428 0 : if (aReflector) {
429 : #ifdef DEBUG
430 0 : binding_detail::AssertReflectorHasGivenProto(aCx, aReflector, aGivenProto);
431 : #endif // DEBUG
432 0 : return true;
433 : }
434 :
435 0 : JSAutoCompartment ac(aCx, global);
436 0 : JS::Handle<JSObject*> canonicalProto = GetProtoObjectHandle(aCx);
437 0 : if (!canonicalProto) {
438 0 : return false;
439 : }
440 0 : JS::Rooted<JSObject*> proto(aCx);
441 0 : if (aGivenProto) {
442 0 : proto = aGivenProto;
443 : // Unfortunately, while aGivenProto was in the compartment of aCx
444 : // coming in, we changed compartments to that of "parent" so may need
445 : // to wrap the proto here.
446 0 : if (js::GetContextCompartment(aCx) != js::GetObjectCompartment(proto)) {
447 0 : if (!JS_WrapObject(aCx, &proto)) {
448 0 : return false;
449 : }
450 : }
451 : } else {
452 0 : proto = canonicalProto;
453 : }
454 :
455 0 : BindingJSObjectCreator<mozilla::dom::ChannelMergerNode> creator(aCx);
456 0 : creator.CreateObject(aCx, sClass.ToJSClass(), proto, aObject, aReflector);
457 0 : if (!aReflector) {
458 0 : return false;
459 : }
460 :
461 0 : aCache->SetWrapper(aReflector);
462 0 : creator.InitializationSucceeded();
463 :
464 0 : MOZ_ASSERT(aCache->GetWrapperPreserveColor() &&
465 : aCache->GetWrapperPreserveColor() == aReflector);
466 : // If proto != canonicalProto, we have to preserve our wrapper;
467 : // otherwise we won't be able to properly recreate it later, since
468 : // we won't know what proto to use. Note that we don't check
469 : // aGivenProto here, since it's entirely possible (and even
470 : // somewhat common) to have a non-null aGivenProto which is the
471 : // same as canonicalProto.
472 0 : if (proto != canonicalProto) {
473 0 : PreserveWrapper(aObject);
474 : }
475 :
476 0 : return true;
477 : }
478 :
479 : const NativePropertyHooks sNativePropertyHooks[] = { {
480 : nullptr,
481 : nullptr,
482 : nullptr,
483 : { nullptr, nullptr },
484 : prototypes::id::ChannelMergerNode,
485 : constructors::id::ChannelMergerNode,
486 : AudioNodeBinding::sNativePropertyHooks,
487 : &DefaultXrayExpandoObjectClass
488 : } };
489 :
490 : void
491 0 : CreateInterfaceObjects(JSContext* aCx, JS::Handle<JSObject*> aGlobal, ProtoAndIfaceCache& aProtoAndIfaceCache, bool aDefineOnGlobal)
492 : {
493 0 : JS::Handle<JSObject*> parentProto(AudioNodeBinding::GetProtoObjectHandle(aCx));
494 0 : if (!parentProto) {
495 0 : return;
496 : }
497 :
498 0 : JS::Handle<JSObject*> constructorProto(AudioNodeBinding::GetConstructorObjectHandle(aCx));
499 0 : if (!constructorProto) {
500 0 : return;
501 : }
502 :
503 0 : JS::Heap<JSObject*>* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::ChannelMergerNode);
504 0 : JS::Heap<JSObject*>* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::ChannelMergerNode);
505 0 : dom::CreateInterfaceObjects(aCx, aGlobal, parentProto,
506 : &sPrototypeClass.mBase, protoCache,
507 : constructorProto, &sInterfaceObjectClass.mBase, 1, nullptr,
508 : interfaceCache,
509 : nullptr,
510 : nullptr,
511 : "ChannelMergerNode", aDefineOnGlobal,
512 : nullptr,
513 0 : false);
514 : }
515 :
516 : JS::Handle<JSObject*>
517 0 : GetProtoObjectHandle(JSContext* aCx)
518 : {
519 : /* Get the interface prototype object for this class. This will create the
520 : object as needed. */
521 0 : bool aDefineOnGlobal = true;
522 :
523 : /* Make sure our global is sane. Hopefully we can remove this sometime */
524 0 : JSObject* global = JS::CurrentGlobalOrNull(aCx);
525 0 : if (!(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL)) {
526 0 : return nullptr;
527 : }
528 :
529 : /* Check to see whether the interface objects are already installed */
530 0 : ProtoAndIfaceCache& protoAndIfaceCache = *GetProtoAndIfaceCache(global);
531 0 : if (!protoAndIfaceCache.HasEntryInSlot(prototypes::id::ChannelMergerNode)) {
532 0 : JS::Rooted<JSObject*> rootedGlobal(aCx, global);
533 0 : CreateInterfaceObjects(aCx, rootedGlobal, protoAndIfaceCache, aDefineOnGlobal);
534 : }
535 :
536 : /*
537 : * The object might _still_ be null, but that's OK.
538 : *
539 : * Calling fromMarkedLocation() is safe because protoAndIfaceCache is
540 : * traced by TraceProtoAndIfaceCache() and its contents are never
541 : * changed after they have been set.
542 : *
543 : * Calling address() avoids the read read barrier that does gray
544 : * unmarking, but it's not possible for the object to be gray here.
545 : */
546 :
547 0 : const JS::Heap<JSObject*>& entrySlot = protoAndIfaceCache.EntrySlotMustExist(prototypes::id::ChannelMergerNode);
548 0 : MOZ_ASSERT(JS::ObjectIsNotGray(entrySlot));
549 0 : return JS::Handle<JSObject*>::fromMarkedLocation(entrySlot.address());
550 : }
551 :
552 : JS::Handle<JSObject*>
553 0 : GetConstructorObjectHandle(JSContext* aCx, bool aDefineOnGlobal)
554 : {
555 : /* Get the interface object for this class. This will create the object as
556 : needed. */
557 :
558 : /* Make sure our global is sane. Hopefully we can remove this sometime */
559 0 : JSObject* global = JS::CurrentGlobalOrNull(aCx);
560 0 : if (!(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL)) {
561 0 : return nullptr;
562 : }
563 :
564 : /* Check to see whether the interface objects are already installed */
565 0 : ProtoAndIfaceCache& protoAndIfaceCache = *GetProtoAndIfaceCache(global);
566 0 : if (!protoAndIfaceCache.HasEntryInSlot(constructors::id::ChannelMergerNode)) {
567 0 : JS::Rooted<JSObject*> rootedGlobal(aCx, global);
568 0 : CreateInterfaceObjects(aCx, rootedGlobal, protoAndIfaceCache, aDefineOnGlobal);
569 : }
570 :
571 : /*
572 : * The object might _still_ be null, but that's OK.
573 : *
574 : * Calling fromMarkedLocation() is safe because protoAndIfaceCache is
575 : * traced by TraceProtoAndIfaceCache() and its contents are never
576 : * changed after they have been set.
577 : *
578 : * Calling address() avoids the read read barrier that does gray
579 : * unmarking, but it's not possible for the object to be gray here.
580 : */
581 :
582 0 : const JS::Heap<JSObject*>& entrySlot = protoAndIfaceCache.EntrySlotMustExist(constructors::id::ChannelMergerNode);
583 0 : MOZ_ASSERT(JS::ObjectIsNotGray(entrySlot));
584 0 : return JS::Handle<JSObject*>::fromMarkedLocation(entrySlot.address());
585 : }
586 :
587 : JSObject*
588 0 : GetConstructorObject(JSContext* aCx)
589 : {
590 0 : return GetConstructorObjectHandle(aCx);
591 : }
592 :
593 : } // namespace ChannelMergerNodeBinding
594 :
595 :
596 :
597 : } // namespace dom
598 : } // namespace mozilla
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