Line data Source code
1 : /* THIS FILE IS AUTOGENERATED FROM Presentation.webidl BY Codegen.py - DO NOT EDIT */
2 :
3 : #include "PresentationBinding.h"
4 : #include "WrapperFactory.h"
5 : #include "mozilla/OwningNonNull.h"
6 : #include "mozilla/Preferences.h"
7 : #include "mozilla/dom/BindingUtils.h"
8 : #include "mozilla/dom/DOMJSClass.h"
9 : #include "mozilla/dom/NonRefcountedDOMObject.h"
10 : #include "mozilla/dom/Nullable.h"
11 : #include "mozilla/dom/Presentation.h"
12 : #include "mozilla/dom/PresentationReceiver.h"
13 : #include "mozilla/dom/PresentationRequest.h"
14 : #include "mozilla/dom/XrayExpandoClass.h"
15 :
16 : namespace mozilla {
17 : namespace dom {
18 :
19 : namespace PresentationBinding {
20 :
21 : static bool
22 0 : get_defaultRequest(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::Presentation* self, JSJitGetterCallArgs args)
23 : {
24 0 : auto result(StrongOrRawPtr<mozilla::dom::PresentationRequest>(self->GetDefaultRequest()));
25 0 : MOZ_ASSERT(!JS_IsExceptionPending(cx));
26 0 : if (!result) {
27 0 : args.rval().setNull();
28 0 : return true;
29 : }
30 0 : if (!GetOrCreateDOMReflector(cx, result, args.rval())) {
31 0 : MOZ_ASSERT(true || JS_IsExceptionPending(cx));
32 0 : return false;
33 : }
34 0 : return true;
35 : }
36 :
37 : static bool
38 0 : set_defaultRequest(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::Presentation* self, JSJitSetterCallArgs args)
39 : {
40 : mozilla::dom::PresentationRequest* arg0;
41 0 : if (args[0].isObject()) {
42 : {
43 0 : nsresult rv = UnwrapObject<prototypes::id::PresentationRequest, mozilla::dom::PresentationRequest>(args[0], arg0);
44 0 : if (NS_FAILED(rv)) {
45 0 : ThrowErrorMessage(cx, MSG_DOES_NOT_IMPLEMENT_INTERFACE, "Value being assigned to Presentation.defaultRequest", "PresentationRequest");
46 0 : return false;
47 : }
48 : }
49 0 : } else if (args[0].isNullOrUndefined()) {
50 0 : arg0 = nullptr;
51 : } else {
52 0 : ThrowErrorMessage(cx, MSG_NOT_OBJECT, "Value being assigned to Presentation.defaultRequest");
53 0 : return false;
54 : }
55 0 : self->SetDefaultRequest(Constify(arg0));
56 0 : MOZ_ASSERT(!JS_IsExceptionPending(cx));
57 :
58 0 : return true;
59 : }
60 :
61 : static const JSJitInfo defaultRequest_getterinfo = {
62 : { (JSJitGetterOp)get_defaultRequest },
63 : { prototypes::id::Presentation },
64 : { PrototypeTraits<prototypes::id::Presentation>::Depth },
65 : JSJitInfo::Getter,
66 : JSJitInfo::AliasEverything, /* aliasSet. Not relevant for setters. */
67 : JSVAL_TYPE_UNKNOWN, /* returnType. Not relevant for setters. */
68 : false, /* isInfallible. False in setters. */
69 : false, /* isMovable. Not relevant for setters. */
70 : false, /* isEliminatable. Not relevant for setters. */
71 : false, /* isAlwaysInSlot. Only relevant for getters. */
72 : false, /* isLazilyCachedInSlot. Only relevant for getters. */
73 : false, /* isTypedMethod. Only relevant for methods. */
74 : 0 /* Reserved slot index, if we're stored in a slot, else 0. */
75 : };
76 : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
77 : static_assert(0 < 1, "There is no slot for us");
78 : static const JSJitInfo defaultRequest_setterinfo = {
79 : { (JSJitGetterOp)set_defaultRequest },
80 : { prototypes::id::Presentation },
81 : { PrototypeTraits<prototypes::id::Presentation>::Depth },
82 : JSJitInfo::Setter,
83 : JSJitInfo::AliasEverything, /* aliasSet. Not relevant for setters. */
84 : JSVAL_TYPE_UNDEFINED, /* returnType. Not relevant for setters. */
85 : false, /* isInfallible. False in setters. */
86 : false, /* isMovable. Not relevant for setters. */
87 : false, /* isEliminatable. Not relevant for setters. */
88 : false, /* isAlwaysInSlot. Only relevant for getters. */
89 : false, /* isLazilyCachedInSlot. Only relevant for getters. */
90 : false, /* isTypedMethod. Only relevant for methods. */
91 : 0 /* Reserved slot index, if we're stored in a slot, else 0. */
92 : };
93 : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
94 : static_assert(0 < 1, "There is no slot for us");
95 :
96 : static bool
97 0 : get_receiver(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::Presentation* self, JSJitGetterCallArgs args)
98 : {
99 0 : auto result(StrongOrRawPtr<mozilla::dom::PresentationReceiver>(self->GetReceiver()));
100 0 : MOZ_ASSERT(!JS_IsExceptionPending(cx));
101 0 : if (!result) {
102 0 : args.rval().setNull();
103 0 : return true;
104 : }
105 0 : if (!GetOrCreateDOMReflector(cx, result, args.rval())) {
106 0 : MOZ_ASSERT(true || JS_IsExceptionPending(cx));
107 0 : return false;
108 : }
109 0 : return true;
110 : }
111 :
112 : static const JSJitInfo receiver_getterinfo = {
113 : { (JSJitGetterOp)get_receiver },
114 : { prototypes::id::Presentation },
115 : { PrototypeTraits<prototypes::id::Presentation>::Depth },
116 : JSJitInfo::Getter,
117 : JSJitInfo::AliasNone, /* aliasSet. Not relevant for setters. */
118 : JSVAL_TYPE_UNKNOWN, /* returnType. Not relevant for setters. */
119 : false, /* isInfallible. False in setters. */
120 : true, /* isMovable. Not relevant for setters. */
121 : true, /* isEliminatable. Not relevant for setters. */
122 : false, /* isAlwaysInSlot. Only relevant for getters. */
123 : false, /* isLazilyCachedInSlot. Only relevant for getters. */
124 : false, /* isTypedMethod. Only relevant for methods. */
125 : 0 /* Reserved slot index, if we're stored in a slot, else 0. */
126 : };
127 : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
128 : static_assert(0 < 1, "There is no slot for us");
129 :
130 : static bool
131 0 : _addProperty(JSContext* cx, JS::Handle<JSObject*> obj, JS::Handle<jsid> id, JS::Handle<JS::Value> val)
132 : {
133 0 : mozilla::dom::Presentation* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::Presentation>(obj);
134 : // We don't want to preserve if we don't have a wrapper, and we
135 : // obviously can't preserve if we're not initialized.
136 0 : if (self && self->GetWrapperPreserveColor()) {
137 0 : PreserveWrapper(self);
138 : }
139 0 : return true;
140 : }
141 :
142 : static void
143 0 : _finalize(js::FreeOp* fop, JSObject* obj)
144 : {
145 0 : mozilla::dom::Presentation* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::Presentation>(obj);
146 0 : if (self) {
147 0 : ClearWrapper(self, self, obj);
148 0 : AddForDeferredFinalization<mozilla::dom::Presentation>(self);
149 : }
150 0 : }
151 :
152 : static void
153 0 : _objectMoved(JSObject* obj, const JSObject* old)
154 : {
155 0 : mozilla::dom::Presentation* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::Presentation>(obj);
156 0 : if (self) {
157 0 : UpdateWrapper(self, self, obj, old);
158 : }
159 0 : }
160 :
161 : // We deliberately use brace-elision to make Visual Studio produce better initalization code.
162 : #if defined(__clang__)
163 : #pragma clang diagnostic push
164 : #pragma clang diagnostic ignored "-Wmissing-braces"
165 : #endif
166 : static const JSPropertySpec sAttributes_specs[] = {
167 : { "defaultRequest", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &defaultRequest_getterinfo, GenericBindingSetter, &defaultRequest_setterinfo },
168 : { nullptr, 0, nullptr, nullptr, nullptr, nullptr },
169 : { "receiver", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &receiver_getterinfo, nullptr, nullptr },
170 : { nullptr, 0, nullptr, nullptr, nullptr, nullptr }
171 : };
172 : #if defined(__clang__)
173 : #pragma clang diagnostic pop
174 : #endif
175 :
176 : static PrefableDisablers sAttributes_disablers0 = {
177 : true, false, 0, nullptr
178 : };
179 :
180 : static PrefableDisablers sAttributes_disablers2 = {
181 : true, false, 0, nullptr
182 : };
183 :
184 : // Can't be const because the pref-enabled boolean needs to be writable
185 : static Prefable<const JSPropertySpec> sAttributes[] = {
186 : { &sAttributes_disablers0, &sAttributes_specs[0] },
187 : { &sAttributes_disablers2, &sAttributes_specs[2] },
188 : { nullptr, nullptr }
189 : };
190 :
191 : static_assert(2 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
192 : "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
193 : static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
194 : "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");
195 :
196 :
197 : static uint16_t sNativeProperties_sortedPropertyIndices[2];
198 : static PropertyInfo sNativeProperties_propertyInfos[2];
199 :
200 : static const NativePropertiesN<1> sNativeProperties = {
201 : false, 0,
202 : false, 0,
203 : false, 0,
204 : true, 0 /* sAttributes */,
205 : false, 0,
206 : false, 0,
207 : false, 0,
208 : -1,
209 : 2,
210 : sNativeProperties_sortedPropertyIndices,
211 : {
212 : { sAttributes, &sNativeProperties_propertyInfos[0] }
213 : }
214 : };
215 : static_assert(2 < 1ull << CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount),
216 : "We have a property info count that is oversized");
217 :
218 : static const DOMIfaceAndProtoJSClass sInterfaceObjectClass = {
219 : {
220 : "Function",
221 : JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_SLOTS_BASE),
222 : &sBoringInterfaceObjectClassClassOps,
223 : JS_NULL_CLASS_SPEC,
224 : JS_NULL_CLASS_EXT,
225 : &sInterfaceObjectClassObjectOps
226 : },
227 : eInterface,
228 : true,
229 : prototypes::id::Presentation,
230 : PrototypeTraits<prototypes::id::Presentation>::Depth,
231 : sNativePropertyHooks,
232 : "function Presentation() {\n [native code]\n}",
233 : JS::GetRealmFunctionPrototype
234 : };
235 :
236 : static const DOMIfaceAndProtoJSClass sPrototypeClass = {
237 : {
238 : "PresentationPrototype",
239 : JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE),
240 : JS_NULL_CLASS_OPS,
241 : JS_NULL_CLASS_SPEC,
242 : JS_NULL_CLASS_EXT,
243 : JS_NULL_OBJECT_OPS
244 : },
245 : eInterfacePrototype,
246 : false,
247 : prototypes::id::Presentation,
248 : PrototypeTraits<prototypes::id::Presentation>::Depth,
249 : sNativePropertyHooks,
250 : "[object PresentationPrototype]",
251 : JS::GetRealmObjectPrototype
252 : };
253 :
254 : bool
255 0 : ConstructorEnabled(JSContext* aCx, JS::Handle<JSObject*> aObj)
256 : {
257 : static bool sPrefValue;
258 : static bool sPrefCacheSetUp = false;
259 0 : if (!sPrefCacheSetUp) {
260 0 : sPrefCacheSetUp = true;
261 0 : Preferences::AddBoolVarCache(&sPrefValue, "dom.presentation.enabled");
262 : }
263 :
264 0 : return sPrefValue;
265 : }
266 :
267 : JSObject*
268 0 : DefineDOMInterface(JSContext* aCx, JS::Handle<JSObject*> aGlobal, JS::Handle<jsid> id, bool aDefineOnGlobal)
269 : {
270 0 : return GetConstructorObjectHandle(aCx, aDefineOnGlobal);
271 : }
272 :
273 : static const js::ClassOps sClassOps = {
274 : _addProperty, /* addProperty */
275 : nullptr, /* delProperty */
276 : nullptr, /* getProperty */
277 : nullptr, /* setProperty */
278 : nullptr, /* enumerate */
279 : nullptr, /* newEnumerate */
280 : nullptr, /* resolve */
281 : nullptr, /* mayResolve */
282 : _finalize, /* finalize */
283 : nullptr, /* call */
284 : nullptr, /* hasInstance */
285 : nullptr, /* construct */
286 : nullptr, /* trace */
287 : };
288 :
289 : static const js::ClassExtension sClassExtension = {
290 : nullptr, /* weakmapKeyDelegateOp */
291 : _objectMoved /* objectMovedOp */
292 : };
293 :
294 : static const DOMJSClass sClass = {
295 : { "Presentation",
296 : JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(1),
297 : &sClassOps,
298 : JS_NULL_CLASS_SPEC,
299 : &sClassExtension,
300 : JS_NULL_OBJECT_OPS
301 : },
302 : { prototypes::id::Presentation, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count },
303 : IsBaseOf<nsISupports, mozilla::dom::Presentation >::value,
304 : sNativePropertyHooks,
305 : FindAssociatedGlobalForNative<mozilla::dom::Presentation>::Get,
306 : GetProtoObjectHandle,
307 : GetCCParticipant<mozilla::dom::Presentation>::Get()
308 : };
309 : static_assert(1 == DOM_INSTANCE_RESERVED_SLOTS,
310 : "Must have the right minimal number of reserved slots.");
311 : static_assert(1 >= 1,
312 : "Must have enough reserved slots.");
313 :
314 : const JSClass*
315 0 : GetJSClass()
316 : {
317 0 : return sClass.ToJSClass();
318 : }
319 :
320 : bool
321 0 : Wrap(JSContext* aCx, mozilla::dom::Presentation* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
322 : {
323 : MOZ_ASSERT(static_cast<mozilla::dom::Presentation*>(aObject) ==
324 : reinterpret_cast<mozilla::dom::Presentation*>(aObject),
325 : "Multiple inheritance for mozilla::dom::Presentation is broken.");
326 0 : MOZ_ASSERT(ToSupportsIsCorrect(aObject));
327 0 : MOZ_ASSERT_IF(aGivenProto, js::IsObjectInContextCompartment(aGivenProto, aCx));
328 0 : MOZ_ASSERT(!aCache->GetWrapper(),
329 : "You should probably not be using Wrap() directly; use "
330 : "GetOrCreateDOMReflector instead");
331 :
332 0 : MOZ_ASSERT(ToSupportsIsOnPrimaryInheritanceChain(aObject, aCache),
333 : "nsISupports must be on our primary inheritance chain");
334 :
335 0 : JS::Rooted<JSObject*> global(aCx, FindAssociatedGlobal(aCx, aObject->GetParentObject()));
336 0 : if (!global) {
337 0 : return false;
338 : }
339 0 : MOZ_ASSERT(JS_IsGlobalObject(global));
340 0 : MOZ_ASSERT(JS::ObjectIsNotGray(global));
341 :
342 : // That might have ended up wrapping us already, due to the wonders
343 : // of XBL. Check for that, and bail out as needed.
344 0 : aReflector.set(aCache->GetWrapper());
345 0 : if (aReflector) {
346 : #ifdef DEBUG
347 0 : binding_detail::AssertReflectorHasGivenProto(aCx, aReflector, aGivenProto);
348 : #endif // DEBUG
349 0 : return true;
350 : }
351 :
352 0 : JSAutoCompartment ac(aCx, global);
353 0 : JS::Handle<JSObject*> canonicalProto = GetProtoObjectHandle(aCx);
354 0 : if (!canonicalProto) {
355 0 : return false;
356 : }
357 0 : JS::Rooted<JSObject*> proto(aCx);
358 0 : if (aGivenProto) {
359 0 : proto = aGivenProto;
360 : // Unfortunately, while aGivenProto was in the compartment of aCx
361 : // coming in, we changed compartments to that of "parent" so may need
362 : // to wrap the proto here.
363 0 : if (js::GetContextCompartment(aCx) != js::GetObjectCompartment(proto)) {
364 0 : if (!JS_WrapObject(aCx, &proto)) {
365 0 : return false;
366 : }
367 : }
368 : } else {
369 0 : proto = canonicalProto;
370 : }
371 :
372 0 : BindingJSObjectCreator<mozilla::dom::Presentation> creator(aCx);
373 0 : creator.CreateObject(aCx, sClass.ToJSClass(), proto, aObject, aReflector);
374 0 : if (!aReflector) {
375 0 : return false;
376 : }
377 :
378 0 : aCache->SetWrapper(aReflector);
379 0 : creator.InitializationSucceeded();
380 :
381 0 : MOZ_ASSERT(aCache->GetWrapperPreserveColor() &&
382 : aCache->GetWrapperPreserveColor() == aReflector);
383 : // If proto != canonicalProto, we have to preserve our wrapper;
384 : // otherwise we won't be able to properly recreate it later, since
385 : // we won't know what proto to use. Note that we don't check
386 : // aGivenProto here, since it's entirely possible (and even
387 : // somewhat common) to have a non-null aGivenProto which is the
388 : // same as canonicalProto.
389 0 : if (proto != canonicalProto) {
390 0 : PreserveWrapper(aObject);
391 : }
392 :
393 0 : return true;
394 : }
395 :
396 : const NativePropertyHooks sNativePropertyHooks[] = { {
397 : nullptr,
398 : nullptr,
399 : nullptr,
400 : { sNativeProperties.Upcast(), nullptr },
401 : prototypes::id::Presentation,
402 : constructors::id::Presentation,
403 : nullptr,
404 : &DefaultXrayExpandoObjectClass
405 : } };
406 :
407 : void
408 0 : CreateInterfaceObjects(JSContext* aCx, JS::Handle<JSObject*> aGlobal, ProtoAndIfaceCache& aProtoAndIfaceCache, bool aDefineOnGlobal)
409 : {
410 0 : JS::Rooted<JSObject*> parentProto(aCx, JS::GetRealmObjectPrototype(aCx));
411 0 : if (!parentProto) {
412 0 : return;
413 : }
414 :
415 0 : JS::Rooted<JSObject*> constructorProto(aCx, JS::GetRealmFunctionPrototype(aCx));
416 0 : if (!constructorProto) {
417 0 : return;
418 : }
419 :
420 : static bool sIdsInited = false;
421 0 : if (!sIdsInited && NS_IsMainThread()) {
422 0 : if (!InitIds(aCx, sNativeProperties.Upcast())) {
423 0 : return;
424 : }
425 0 : sIdsInited = true;
426 : }
427 :
428 : static bool sPrefCachesInited = false;
429 0 : if (!sPrefCachesInited && NS_IsMainThread()) {
430 0 : sPrefCachesInited = true;
431 0 : Preferences::AddBoolVarCache(&sAttributes[0].disablers->enabled, "dom.presentation.controller.enabled");
432 0 : Preferences::AddBoolVarCache(&sAttributes[1].disablers->enabled, "dom.presentation.receiver.enabled");
433 : }
434 :
435 0 : JS::Heap<JSObject*>* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::Presentation);
436 0 : JS::Heap<JSObject*>* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::Presentation);
437 0 : dom::CreateInterfaceObjects(aCx, aGlobal, parentProto,
438 : &sPrototypeClass.mBase, protoCache,
439 : constructorProto, &sInterfaceObjectClass.mBase, 0, nullptr,
440 : interfaceCache,
441 : sNativeProperties.Upcast(),
442 : nullptr,
443 : "Presentation", aDefineOnGlobal,
444 : nullptr,
445 0 : false);
446 : }
447 :
448 : JS::Handle<JSObject*>
449 0 : GetProtoObjectHandle(JSContext* aCx)
450 : {
451 : /* Get the interface prototype object for this class. This will create the
452 : object as needed. */
453 0 : bool aDefineOnGlobal = true;
454 :
455 : /* Make sure our global is sane. Hopefully we can remove this sometime */
456 0 : JSObject* global = JS::CurrentGlobalOrNull(aCx);
457 0 : if (!(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL)) {
458 0 : return nullptr;
459 : }
460 :
461 : /* Check to see whether the interface objects are already installed */
462 0 : ProtoAndIfaceCache& protoAndIfaceCache = *GetProtoAndIfaceCache(global);
463 0 : if (!protoAndIfaceCache.HasEntryInSlot(prototypes::id::Presentation)) {
464 0 : JS::Rooted<JSObject*> rootedGlobal(aCx, global);
465 0 : CreateInterfaceObjects(aCx, rootedGlobal, protoAndIfaceCache, aDefineOnGlobal);
466 : }
467 :
468 : /*
469 : * The object might _still_ be null, but that's OK.
470 : *
471 : * Calling fromMarkedLocation() is safe because protoAndIfaceCache is
472 : * traced by TraceProtoAndIfaceCache() and its contents are never
473 : * changed after they have been set.
474 : *
475 : * Calling address() avoids the read read barrier that does gray
476 : * unmarking, but it's not possible for the object to be gray here.
477 : */
478 :
479 0 : const JS::Heap<JSObject*>& entrySlot = protoAndIfaceCache.EntrySlotMustExist(prototypes::id::Presentation);
480 0 : MOZ_ASSERT(JS::ObjectIsNotGray(entrySlot));
481 0 : return JS::Handle<JSObject*>::fromMarkedLocation(entrySlot.address());
482 : }
483 :
484 : JS::Handle<JSObject*>
485 0 : GetConstructorObjectHandle(JSContext* aCx, bool aDefineOnGlobal)
486 : {
487 : /* Get the interface object for this class. This will create the object as
488 : needed. */
489 :
490 : /* Make sure our global is sane. Hopefully we can remove this sometime */
491 0 : JSObject* global = JS::CurrentGlobalOrNull(aCx);
492 0 : if (!(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL)) {
493 0 : return nullptr;
494 : }
495 :
496 : /* Check to see whether the interface objects are already installed */
497 0 : ProtoAndIfaceCache& protoAndIfaceCache = *GetProtoAndIfaceCache(global);
498 0 : if (!protoAndIfaceCache.HasEntryInSlot(constructors::id::Presentation)) {
499 0 : JS::Rooted<JSObject*> rootedGlobal(aCx, global);
500 0 : CreateInterfaceObjects(aCx, rootedGlobal, protoAndIfaceCache, aDefineOnGlobal);
501 : }
502 :
503 : /*
504 : * The object might _still_ be null, but that's OK.
505 : *
506 : * Calling fromMarkedLocation() is safe because protoAndIfaceCache is
507 : * traced by TraceProtoAndIfaceCache() and its contents are never
508 : * changed after they have been set.
509 : *
510 : * Calling address() avoids the read read barrier that does gray
511 : * unmarking, but it's not possible for the object to be gray here.
512 : */
513 :
514 0 : const JS::Heap<JSObject*>& entrySlot = protoAndIfaceCache.EntrySlotMustExist(constructors::id::Presentation);
515 0 : MOZ_ASSERT(JS::ObjectIsNotGray(entrySlot));
516 0 : return JS::Handle<JSObject*>::fromMarkedLocation(entrySlot.address());
517 : }
518 :
519 : JSObject*
520 0 : GetConstructorObject(JSContext* aCx)
521 : {
522 0 : return GetConstructorObjectHandle(aCx);
523 : }
524 :
525 : } // namespace PresentationBinding
526 :
527 :
528 :
529 : } // namespace dom
530 : } // namespace mozilla
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