LCOV - code coverage report
Current view: top level - obj-x86_64-pc-linux-gnu/dom/bindings - PresentationConnectionListBinding.cpp (source / functions) Hit Total Coverage
Test: output.info Lines: 0 165 0.0 %
Date: 2017-07-14 16:53:18 Functions: 0 15 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* THIS FILE IS AUTOGENERATED FROM PresentationConnectionList.webidl BY Codegen.py - DO NOT EDIT */
       2             : 
       3             : #include "EventHandlerBinding.h"
       4             : #include "EventTargetBinding.h"
       5             : #include "PresentationConnectionListBinding.h"
       6             : #include "WrapperFactory.h"
       7             : #include "XrayWrapper.h"
       8             : #include "mozilla/OwningNonNull.h"
       9             : #include "mozilla/Preferences.h"
      10             : #include "mozilla/dom/BindingUtils.h"
      11             : #include "mozilla/dom/DOMJSClass.h"
      12             : #include "mozilla/dom/NonRefcountedDOMObject.h"
      13             : #include "mozilla/dom/Nullable.h"
      14             : #include "mozilla/dom/PresentationConnection.h"
      15             : #include "mozilla/dom/PresentationConnectionList.h"
      16             : #include "mozilla/dom/XrayExpandoClass.h"
      17             : 
      18             : namespace mozilla {
      19             : namespace dom {
      20             : 
      21             : namespace PresentationConnectionListBinding {
      22             : 
      23             : static_assert(IsRefcounted<NativeType>::value == IsRefcounted<EventTargetBinding::NativeType>::value,
      24             :               "Can't inherit from an interface with a different ownership model.");
      25             : 
      26             : static bool
      27           0 : get_connections(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::PresentationConnectionList* self, JSJitGetterCallArgs args)
      28             : {
      29             :   // Have to either root across the getter call or reget after.
      30             :   bool isXray;
      31           0 :   JS::Rooted<JSObject*> slotStorage(cx, GetCachedSlotStorageObject(cx, obj, &isXray));
      32           0 :   if (!slotStorage) {
      33           0 :     return false;
      34             :   }
      35           0 :   const size_t slotIndex = isXray ? (xpc::JSSLOT_EXPANDO_COUNT + 0) : (DOM_INSTANCE_RESERVED_SLOTS + 0);
      36           0 :   MOZ_ASSERT(JSCLASS_RESERVED_SLOTS(js::GetObjectClass(slotStorage)) > slotIndex);
      37             :   {
      38             :     // Scope for cachedVal
      39           0 :     JS::Value cachedVal = js::GetReservedSlot(slotStorage, slotIndex);
      40           0 :     if (!cachedVal.isUndefined()) {
      41           0 :       args.rval().set(cachedVal);
      42             :       // The cached value is in the compartment of slotStorage,
      43             :       // so wrap into the caller compartment as needed.
      44           0 :       return MaybeWrapNonDOMObjectValue(cx, args.rval());
      45             :     }
      46             :   }
      47             : 
      48           0 :   nsTArray<StrongPtrForMember<mozilla::dom::PresentationConnection>::Type> result;
      49           0 :   self->GetConnections(result);
      50           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
      51             :   {
      52           0 :     JS::Rooted<JSObject*> conversionScope(cx, isXray ? obj : slotStorage);
      53           0 :     JSAutoCompartment ac(cx, conversionScope);
      54             :     do { // block we break out of when done wrapping
      55             : 
      56           0 :       uint32_t length = result.Length();
      57           0 :       JS::Rooted<JSObject*> returnArray(cx, JS_NewArrayObject(cx, length));
      58           0 :       if (!returnArray) {
      59           0 :         return false;
      60             :       }
      61             :       // Scope for 'tmp'
      62             :       {
      63           0 :         JS::Rooted<JS::Value> tmp(cx);
      64           0 :         for (uint32_t sequenceIdx0 = 0; sequenceIdx0 < length; ++sequenceIdx0) {
      65             :           // Control block to let us common up the JS_DefineElement calls when there
      66             :           // are different ways to succeed at wrapping the object.
      67             :           do {
      68           0 :             if (!GetOrCreateDOMReflector(cx, result[sequenceIdx0], &tmp)) {
      69           0 :               MOZ_ASSERT(true || JS_IsExceptionPending(cx));
      70           0 :               return false;
      71             :             }
      72           0 :             break;
      73             :           } while (0);
      74           0 :           if (!JS_DefineElement(cx, returnArray, sequenceIdx0, tmp,
      75             :                                 JSPROP_ENUMERATE)) {
      76           0 :             return false;
      77             :           }
      78             :         }
      79             :       }
      80           0 :       args.rval().setObject(*returnArray);
      81           0 :       break;
      82             :     } while (0);
      83           0 :     JS::Rooted<JSObject*> rvalObj(cx, &args.rval().toObject());
      84           0 :     if (!JS_FreezeObject(cx, rvalObj)) {
      85           0 :       return false;
      86             :     }
      87             :   }
      88             :   { // And now store things in the compartment of our slotStorage.
      89           0 :     JSAutoCompartment ac(cx, slotStorage);
      90             :     // Make a copy so that we don't do unnecessary wrapping on args.rval().
      91           0 :     JS::Rooted<JS::Value> storedVal(cx, args.rval());
      92           0 :     if (!MaybeWrapNonDOMObjectValue(cx, &storedVal)) {
      93           0 :       return false;
      94             :     }
      95           0 :     js::SetReservedSlot(slotStorage, slotIndex, storedVal);
      96           0 :     if (!isXray) {
      97             :       // In the Xray case we don't need to do this, because getting the
      98             :       // expando object already preserved our wrapper.
      99           0 :       PreserveWrapper(self);
     100             :     }
     101             :   }
     102             :   // And now make sure args.rval() is in the caller compartment
     103           0 :   return MaybeWrapNonDOMObjectValue(cx, args.rval());
     104             : }
     105             : 
     106             : static const JSJitInfo connections_getterinfo = {
     107             :   { (JSJitGetterOp)get_connections },
     108             :   { prototypes::id::PresentationConnectionList },
     109             :   { PrototypeTraits<prototypes::id::PresentationConnectionList>::Depth },
     110             :   JSJitInfo::Getter,
     111             :   JSJitInfo::AliasDOMSets, /* aliasSet.  Not relevant for setters. */
     112             :   JSVAL_TYPE_OBJECT,  /* returnType.  Not relevant for setters. */
     113             :   false,  /* isInfallible. False in setters. */
     114             :   true,  /* isMovable.  Not relevant for setters. */
     115             :   true, /* isEliminatable.  Not relevant for setters. */
     116             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
     117             :   true, /* isLazilyCachedInSlot.  Only relevant for getters. */
     118             :   false,  /* isTypedMethod.  Only relevant for methods. */
     119             :   (DOM_INSTANCE_RESERVED_SLOTS + 0)   /* Reserved slot index, if we're stored in a slot, else 0. */
     120             : };
     121             : static_assert((DOM_INSTANCE_RESERVED_SLOTS + 0) <= JSJitInfo::maxSlotIndex, "We won't fit");
     122             : static_assert((DOM_INSTANCE_RESERVED_SLOTS + 0) < 2, "There is no slot for us");
     123             : 
     124             : static bool
     125           0 : get_onconnectionavailable(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::PresentationConnectionList* self, JSJitGetterCallArgs args)
     126             : {
     127           0 :   RefPtr<EventHandlerNonNull> result(self->GetOnconnectionavailable());
     128           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
     129           0 :   if (result) {
     130           0 :     args.rval().setObjectOrNull(GetCallbackFromCallbackObject(result));
     131           0 :     if (!MaybeWrapObjectOrNullValue(cx, args.rval())) {
     132           0 :       return false;
     133             :     }
     134           0 :     return true;
     135             :   } else {
     136           0 :     args.rval().setNull();
     137           0 :     return true;
     138             :   }
     139             : }
     140             : 
     141             : static bool
     142           0 : set_onconnectionavailable(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::PresentationConnectionList* self, JSJitSetterCallArgs args)
     143             : {
     144           0 :   RootedCallback<RefPtr<binding_detail::FastEventHandlerNonNull>> arg0(cx);
     145           0 :   if (args[0].isObject()) {
     146             :     { // scope for tempRoot
     147           0 :       JS::Rooted<JSObject*> tempRoot(cx, &args[0].toObject());
     148           0 :       arg0 = new binding_detail::FastEventHandlerNonNull(tempRoot);
     149             :     }
     150             :   } else {
     151           0 :     arg0 = nullptr;
     152             :   }
     153           0 :   self->SetOnconnectionavailable(Constify(arg0));
     154           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
     155             : 
     156           0 :   return true;
     157             : }
     158             : 
     159             : static const JSJitInfo onconnectionavailable_getterinfo = {
     160             :   { (JSJitGetterOp)get_onconnectionavailable },
     161             :   { prototypes::id::PresentationConnectionList },
     162             :   { PrototypeTraits<prototypes::id::PresentationConnectionList>::Depth },
     163             :   JSJitInfo::Getter,
     164             :   JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
     165             :   JSVAL_TYPE_UNKNOWN,  /* returnType.  Not relevant for setters. */
     166             :   false,  /* isInfallible. False in setters. */
     167             :   false,  /* isMovable.  Not relevant for setters. */
     168             :   false, /* isEliminatable.  Not relevant for setters. */
     169             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
     170             :   false, /* isLazilyCachedInSlot.  Only relevant for getters. */
     171             :   false,  /* isTypedMethod.  Only relevant for methods. */
     172             :   0   /* Reserved slot index, if we're stored in a slot, else 0. */
     173             : };
     174             : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
     175             : static_assert(0 < 2, "There is no slot for us");
     176             : static const JSJitInfo onconnectionavailable_setterinfo = {
     177             :   { (JSJitGetterOp)set_onconnectionavailable },
     178             :   { prototypes::id::PresentationConnectionList },
     179             :   { PrototypeTraits<prototypes::id::PresentationConnectionList>::Depth },
     180             :   JSJitInfo::Setter,
     181             :   JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
     182             :   JSVAL_TYPE_UNDEFINED,  /* returnType.  Not relevant for setters. */
     183             :   false,  /* isInfallible. False in setters. */
     184             :   false,  /* isMovable.  Not relevant for setters. */
     185             :   false, /* isEliminatable.  Not relevant for setters. */
     186             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
     187             :   false, /* isLazilyCachedInSlot.  Only relevant for getters. */
     188             :   false,  /* isTypedMethod.  Only relevant for methods. */
     189             :   0   /* Reserved slot index, if we're stored in a slot, else 0. */
     190             : };
     191             : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
     192             : static_assert(0 < 2, "There is no slot for us");
     193             : 
     194             : static bool
     195           0 : _addProperty(JSContext* cx, JS::Handle<JSObject*> obj, JS::Handle<jsid> id, JS::Handle<JS::Value> val)
     196             : {
     197           0 :   mozilla::dom::PresentationConnectionList* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::PresentationConnectionList>(obj);
     198             :   // We don't want to preserve if we don't have a wrapper, and we
     199             :   // obviously can't preserve if we're not initialized.
     200           0 :   if (self && self->GetWrapperPreserveColor()) {
     201           0 :     PreserveWrapper(self);
     202             :   }
     203           0 :   return true;
     204             : }
     205             : 
     206             : static void
     207           0 : _finalize(js::FreeOp* fop, JSObject* obj)
     208             : {
     209           0 :   mozilla::dom::PresentationConnectionList* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::PresentationConnectionList>(obj);
     210           0 :   if (self) {
     211           0 :     ClearWrapper(self, self, obj);
     212           0 :     AddForDeferredFinalization<mozilla::dom::PresentationConnectionList>(self);
     213             :   }
     214           0 : }
     215             : 
     216             : static void
     217           0 : _objectMoved(JSObject* obj, const JSObject* old)
     218             : {
     219           0 :   mozilla::dom::PresentationConnectionList* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::PresentationConnectionList>(obj);
     220           0 :   if (self) {
     221           0 :     UpdateWrapper(self, self, obj, old);
     222             :   }
     223           0 : }
     224             : 
     225             : // We deliberately use brace-elision to make Visual Studio produce better initalization code.
     226             : #if defined(__clang__)
     227             : #pragma clang diagnostic push
     228             : #pragma clang diagnostic ignored "-Wmissing-braces"
     229             : #endif
     230             : static const JSPropertySpec sAttributes_specs[] = {
     231             :   { "connections", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &connections_getterinfo, nullptr, nullptr },
     232             :   { "onconnectionavailable", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &onconnectionavailable_getterinfo, GenericBindingSetter, &onconnectionavailable_setterinfo },
     233             :   { nullptr, 0, nullptr, nullptr, nullptr, nullptr }
     234             : };
     235             : #if defined(__clang__)
     236             : #pragma clang diagnostic pop
     237             : #endif
     238             : 
     239             : 
     240             : // Can't be const because the pref-enabled boolean needs to be writable
     241             : static Prefable<const JSPropertySpec> sAttributes[] = {
     242             :   { nullptr, &sAttributes_specs[0] },
     243             :   { nullptr, nullptr }
     244             : };
     245             : 
     246             : static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
     247             :     "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
     248             : static_assert(2 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
     249             :     "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");
     250             : 
     251             : 
     252             : static uint16_t sNativeProperties_sortedPropertyIndices[2];
     253             : static PropertyInfo sNativeProperties_propertyInfos[2];
     254             : 
     255             : static const NativePropertiesN<1> sNativeProperties = {
     256             :   false, 0,
     257             :   false, 0,
     258             :   false, 0,
     259             :   true,  0 /* sAttributes */,
     260             :   false, 0,
     261             :   false, 0,
     262             :   false, 0,
     263             :   -1,
     264             :   2,
     265             :   sNativeProperties_sortedPropertyIndices,
     266             :   {
     267             :     { sAttributes, &sNativeProperties_propertyInfos[0] }
     268             :   }
     269             : };
     270             : static_assert(2 < 1ull << CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount),
     271             :     "We have a property info count that is oversized");
     272             : 
     273             : static const DOMIfaceAndProtoJSClass sInterfaceObjectClass = {
     274             :   {
     275             :     "Function",
     276             :     JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_SLOTS_BASE),
     277             :     &sBoringInterfaceObjectClassClassOps,
     278             :     JS_NULL_CLASS_SPEC,
     279             :     JS_NULL_CLASS_EXT,
     280             :     &sInterfaceObjectClassObjectOps
     281             :   },
     282             :   eInterface,
     283             :   true,
     284             :   prototypes::id::PresentationConnectionList,
     285             :   PrototypeTraits<prototypes::id::PresentationConnectionList>::Depth,
     286             :   sNativePropertyHooks,
     287             :   "function PresentationConnectionList() {\n    [native code]\n}",
     288             :   EventTargetBinding::GetConstructorObject
     289             : };
     290             : 
     291             : static const DOMIfaceAndProtoJSClass sPrototypeClass = {
     292             :   {
     293             :     "PresentationConnectionListPrototype",
     294             :     JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE),
     295             :     JS_NULL_CLASS_OPS,
     296             :     JS_NULL_CLASS_SPEC,
     297             :     JS_NULL_CLASS_EXT,
     298             :     JS_NULL_OBJECT_OPS
     299             :   },
     300             :   eInterfacePrototype,
     301             :   false,
     302             :   prototypes::id::PresentationConnectionList,
     303             :   PrototypeTraits<prototypes::id::PresentationConnectionList>::Depth,
     304             :   sNativePropertyHooks,
     305             :   "[object PresentationConnectionListPrototype]",
     306             :   EventTargetBinding::GetProtoObject
     307             : };
     308             : 
     309             : bool
     310           0 : ConstructorEnabled(JSContext* aCx, JS::Handle<JSObject*> aObj)
     311             : {
     312             :   static bool sPrefValue;
     313             :   static bool sPrefCacheSetUp = false;
     314           0 :   if (!sPrefCacheSetUp) {
     315           0 :     sPrefCacheSetUp = true;
     316           0 :     Preferences::AddBoolVarCache(&sPrefValue, "dom.presentation.receiver.enabled");
     317             :   }
     318             : 
     319           0 :   return sPrefValue;
     320             : }
     321             : 
     322             : JSObject*
     323           0 : DefineDOMInterface(JSContext* aCx, JS::Handle<JSObject*> aGlobal, JS::Handle<jsid> id, bool aDefineOnGlobal)
     324             : {
     325           0 :   return GetConstructorObjectHandle(aCx, aDefineOnGlobal);
     326             : }
     327             : 
     328             : static const js::ClassOps sClassOps = {
     329             :   _addProperty, /* addProperty */
     330             :   nullptr,               /* delProperty */
     331             :   nullptr,               /* getProperty */
     332             :   nullptr,               /* setProperty */
     333             :   nullptr,               /* enumerate */
     334             :   nullptr, /* newEnumerate */
     335             :   nullptr, /* resolve */
     336             :   nullptr, /* mayResolve */
     337             :   _finalize, /* finalize */
     338             :   nullptr, /* call */
     339             :   nullptr,               /* hasInstance */
     340             :   nullptr,               /* construct */
     341             :   nullptr, /* trace */
     342             : };
     343             : 
     344             : static const js::ClassExtension sClassExtension = {
     345             :   nullptr, /* weakmapKeyDelegateOp */
     346             :   _objectMoved /* objectMovedOp */
     347             : };
     348             : 
     349             : static const DOMJSClass sClass = {
     350             :   { "PresentationConnectionList",
     351             :     JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(2),
     352             :     &sClassOps,
     353             :     JS_NULL_CLASS_SPEC,
     354             :     &sClassExtension,
     355             :     JS_NULL_OBJECT_OPS
     356             :   },
     357             :   { prototypes::id::EventTarget, prototypes::id::PresentationConnectionList, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count },
     358             :   IsBaseOf<nsISupports, mozilla::dom::PresentationConnectionList >::value,
     359             :   sNativePropertyHooks,
     360             :   FindAssociatedGlobalForNative<mozilla::dom::PresentationConnectionList>::Get,
     361             :   GetProtoObjectHandle,
     362             :   GetCCParticipant<mozilla::dom::PresentationConnectionList>::Get()
     363             : };
     364             : static_assert(1 == DOM_INSTANCE_RESERVED_SLOTS,
     365             :               "Must have the right minimal number of reserved slots.");
     366             : static_assert(2 >= 2,
     367             :               "Must have enough reserved slots.");
     368             : 
     369             : const JSClass*
     370           0 : GetJSClass()
     371             : {
     372           0 :   return sClass.ToJSClass();
     373             : }
     374             : 
     375             : bool
     376           0 : Wrap(JSContext* aCx, mozilla::dom::PresentationConnectionList* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
     377             : {
     378             :   MOZ_ASSERT(static_cast<mozilla::dom::PresentationConnectionList*>(aObject) ==
     379             :              reinterpret_cast<mozilla::dom::PresentationConnectionList*>(aObject),
     380             :              "Multiple inheritance for mozilla::dom::PresentationConnectionList is broken.");
     381             :   MOZ_ASSERT(static_cast<mozilla::dom::EventTarget*>(aObject) ==
     382             :              reinterpret_cast<mozilla::dom::EventTarget*>(aObject),
     383             :              "Multiple inheritance for mozilla::dom::EventTarget is broken.");
     384           0 :   MOZ_ASSERT(ToSupportsIsCorrect(aObject));
     385           0 :   MOZ_ASSERT_IF(aGivenProto, js::IsObjectInContextCompartment(aGivenProto, aCx));
     386           0 :   MOZ_ASSERT(!aCache->GetWrapper(),
     387             :              "You should probably not be using Wrap() directly; use "
     388             :              "GetOrCreateDOMReflector instead");
     389             : 
     390           0 :   MOZ_ASSERT(ToSupportsIsOnPrimaryInheritanceChain(aObject, aCache),
     391             :              "nsISupports must be on our primary inheritance chain");
     392             : 
     393           0 :   JS::Rooted<JSObject*> global(aCx, FindAssociatedGlobal(aCx, aObject->GetParentObject()));
     394           0 :   if (!global) {
     395           0 :     return false;
     396             :   }
     397           0 :   MOZ_ASSERT(JS_IsGlobalObject(global));
     398           0 :   MOZ_ASSERT(JS::ObjectIsNotGray(global));
     399             : 
     400             :   // That might have ended up wrapping us already, due to the wonders
     401             :   // of XBL.  Check for that, and bail out as needed.
     402           0 :   aReflector.set(aCache->GetWrapper());
     403           0 :   if (aReflector) {
     404             : #ifdef DEBUG
     405           0 :     binding_detail::AssertReflectorHasGivenProto(aCx, aReflector, aGivenProto);
     406             : #endif // DEBUG
     407           0 :     return true;
     408             :   }
     409             : 
     410           0 :   JSAutoCompartment ac(aCx, global);
     411           0 :   JS::Handle<JSObject*> canonicalProto = GetProtoObjectHandle(aCx);
     412           0 :   if (!canonicalProto) {
     413           0 :     return false;
     414             :   }
     415           0 :   JS::Rooted<JSObject*> proto(aCx);
     416           0 :   if (aGivenProto) {
     417           0 :     proto = aGivenProto;
     418             :     // Unfortunately, while aGivenProto was in the compartment of aCx
     419             :     // coming in, we changed compartments to that of "parent" so may need
     420             :     // to wrap the proto here.
     421           0 :     if (js::GetContextCompartment(aCx) != js::GetObjectCompartment(proto)) {
     422           0 :       if (!JS_WrapObject(aCx, &proto)) {
     423           0 :         return false;
     424             :       }
     425             :     }
     426             :   } else {
     427           0 :     proto = canonicalProto;
     428             :   }
     429             : 
     430           0 :   BindingJSObjectCreator<mozilla::dom::PresentationConnectionList> creator(aCx);
     431           0 :   creator.CreateObject(aCx, sClass.ToJSClass(), proto, aObject, aReflector);
     432           0 :   if (!aReflector) {
     433           0 :     return false;
     434             :   }
     435             : 
     436           0 :   aCache->SetWrapper(aReflector);
     437           0 :   creator.InitializationSucceeded();
     438             : 
     439           0 :   MOZ_ASSERT(aCache->GetWrapperPreserveColor() &&
     440             :              aCache->GetWrapperPreserveColor() == aReflector);
     441             :   // If proto != canonicalProto, we have to preserve our wrapper;
     442             :   // otherwise we won't be able to properly recreate it later, since
     443             :   // we won't know what proto to use.  Note that we don't check
     444             :   // aGivenProto here, since it's entirely possible (and even
     445             :   // somewhat common) to have a non-null aGivenProto which is the
     446             :   // same as canonicalProto.
     447           0 :   if (proto != canonicalProto) {
     448           0 :     PreserveWrapper(aObject);
     449             :   }
     450             : 
     451           0 :   return true;
     452             : }
     453             : 
     454             : // This may allocate too many slots, because we only really need
     455             : // slots for our non-interface-typed members that we cache.  But
     456             : // allocating slots only for those would make the slot index
     457             : // computations much more complicated, so let's do this the simple
     458             : // way for now.
     459             : DEFINE_XRAY_EXPANDO_CLASS(static, sXrayExpandoObjectClass, 1);
     460             : 
     461             : const NativePropertyHooks sNativePropertyHooks[] = { {
     462             :   nullptr,
     463             :   nullptr,
     464             :   nullptr,
     465             :   { sNativeProperties.Upcast(), nullptr },
     466             :   prototypes::id::PresentationConnectionList,
     467             :   constructors::id::PresentationConnectionList,
     468             :   EventTargetBinding::sNativePropertyHooks,
     469             :   &sXrayExpandoObjectClass
     470             : } };
     471             : 
     472             : void
     473           0 : ClearCachedConnectionsValue(mozilla::dom::PresentationConnectionList* aObject)
     474             : {
     475             :   JSObject* obj;
     476           0 :   obj = aObject->GetWrapper();
     477           0 :   if (!obj) {
     478           0 :     return;
     479             :   }
     480           0 :   js::SetReservedSlot(obj, (DOM_INSTANCE_RESERVED_SLOTS + 0), JS::UndefinedValue());
     481           0 :   xpc::ClearXrayExpandoSlots(obj, (xpc::JSSLOT_EXPANDO_COUNT + 0));
     482             : }
     483             : 
     484             : void
     485           0 : CreateInterfaceObjects(JSContext* aCx, JS::Handle<JSObject*> aGlobal, ProtoAndIfaceCache& aProtoAndIfaceCache, bool aDefineOnGlobal)
     486             : {
     487           0 :   JS::Handle<JSObject*> parentProto(EventTargetBinding::GetProtoObjectHandle(aCx));
     488           0 :   if (!parentProto) {
     489           0 :     return;
     490             :   }
     491             : 
     492           0 :   JS::Handle<JSObject*> constructorProto(EventTargetBinding::GetConstructorObjectHandle(aCx));
     493           0 :   if (!constructorProto) {
     494           0 :     return;
     495             :   }
     496             : 
     497             :   static bool sIdsInited = false;
     498           0 :   if (!sIdsInited && NS_IsMainThread()) {
     499           0 :     if (!InitIds(aCx, sNativeProperties.Upcast())) {
     500           0 :       return;
     501             :     }
     502           0 :     sIdsInited = true;
     503             :   }
     504             : 
     505           0 :   JS::Heap<JSObject*>* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::PresentationConnectionList);
     506           0 :   JS::Heap<JSObject*>* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::PresentationConnectionList);
     507           0 :   dom::CreateInterfaceObjects(aCx, aGlobal, parentProto,
     508             :                               &sPrototypeClass.mBase, protoCache,
     509             :                               constructorProto, &sInterfaceObjectClass.mBase, 0, nullptr,
     510             :                               interfaceCache,
     511             :                               sNativeProperties.Upcast(),
     512             :                               nullptr,
     513             :                               "PresentationConnectionList", aDefineOnGlobal,
     514             :                               nullptr,
     515           0 :                               false);
     516             : }
     517             : 
     518             : JS::Handle<JSObject*>
     519           0 : GetProtoObjectHandle(JSContext* aCx)
     520             : {
     521             :   /* Get the interface prototype object for this class.  This will create the
     522             :      object as needed. */
     523           0 :   bool aDefineOnGlobal = true;
     524             : 
     525             :   /* Make sure our global is sane.  Hopefully we can remove this sometime */
     526           0 :   JSObject* global = JS::CurrentGlobalOrNull(aCx);
     527           0 :   if (!(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL)) {
     528           0 :     return nullptr;
     529             :   }
     530             : 
     531             :   /* Check to see whether the interface objects are already installed */
     532           0 :   ProtoAndIfaceCache& protoAndIfaceCache = *GetProtoAndIfaceCache(global);
     533           0 :   if (!protoAndIfaceCache.HasEntryInSlot(prototypes::id::PresentationConnectionList)) {
     534           0 :     JS::Rooted<JSObject*> rootedGlobal(aCx, global);
     535           0 :     CreateInterfaceObjects(aCx, rootedGlobal, protoAndIfaceCache, aDefineOnGlobal);
     536             :   }
     537             : 
     538             :   /*
     539             :    * The object might _still_ be null, but that's OK.
     540             :    *
     541             :    * Calling fromMarkedLocation() is safe because protoAndIfaceCache is
     542             :    * traced by TraceProtoAndIfaceCache() and its contents are never
     543             :    * changed after they have been set.
     544             :    *
     545             :    * Calling address() avoids the read read barrier that does gray
     546             :    * unmarking, but it's not possible for the object to be gray here.
     547             :    */
     548             : 
     549           0 :   const JS::Heap<JSObject*>& entrySlot = protoAndIfaceCache.EntrySlotMustExist(prototypes::id::PresentationConnectionList);
     550           0 :   MOZ_ASSERT(JS::ObjectIsNotGray(entrySlot));
     551           0 :   return JS::Handle<JSObject*>::fromMarkedLocation(entrySlot.address());
     552             : }
     553             : 
     554             : JS::Handle<JSObject*>
     555           0 : GetConstructorObjectHandle(JSContext* aCx, bool aDefineOnGlobal)
     556             : {
     557             :   /* Get the interface object for this class.  This will create the object as
     558             :      needed. */
     559             : 
     560             :   /* Make sure our global is sane.  Hopefully we can remove this sometime */
     561           0 :   JSObject* global = JS::CurrentGlobalOrNull(aCx);
     562           0 :   if (!(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL)) {
     563           0 :     return nullptr;
     564             :   }
     565             : 
     566             :   /* Check to see whether the interface objects are already installed */
     567           0 :   ProtoAndIfaceCache& protoAndIfaceCache = *GetProtoAndIfaceCache(global);
     568           0 :   if (!protoAndIfaceCache.HasEntryInSlot(constructors::id::PresentationConnectionList)) {
     569           0 :     JS::Rooted<JSObject*> rootedGlobal(aCx, global);
     570           0 :     CreateInterfaceObjects(aCx, rootedGlobal, protoAndIfaceCache, aDefineOnGlobal);
     571             :   }
     572             : 
     573             :   /*
     574             :    * The object might _still_ be null, but that's OK.
     575             :    *
     576             :    * Calling fromMarkedLocation() is safe because protoAndIfaceCache is
     577             :    * traced by TraceProtoAndIfaceCache() and its contents are never
     578             :    * changed after they have been set.
     579             :    *
     580             :    * Calling address() avoids the read read barrier that does gray
     581             :    * unmarking, but it's not possible for the object to be gray here.
     582             :    */
     583             : 
     584           0 :   const JS::Heap<JSObject*>& entrySlot = protoAndIfaceCache.EntrySlotMustExist(constructors::id::PresentationConnectionList);
     585           0 :   MOZ_ASSERT(JS::ObjectIsNotGray(entrySlot));
     586           0 :   return JS::Handle<JSObject*>::fromMarkedLocation(entrySlot.address());
     587             : }
     588             : 
     589             : JSObject*
     590           0 : GetConstructorObject(JSContext* aCx)
     591             : {
     592           0 :   return GetConstructorObjectHandle(aCx);
     593             : }
     594             : 
     595             : } // namespace PresentationConnectionListBinding
     596             : 
     597             : 
     598             : 
     599             : } // namespace dom
     600             : } // namespace mozilla

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