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