LCOV - code coverage report
Current view: top level - obj-x86_64-pc-linux-gnu/dom/bindings - FileSystemBinding.cpp (source / functions) Hit Total Coverage
Test: output.info Lines: 0 286 0.0 %
Date: 2017-07-14 16:53:18 Functions: 0 26 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* THIS FILE IS AUTOGENERATED FROM FileSystem.webidl BY Codegen.py - DO NOT EDIT */
       2             : 
       3             : #include "AtomList.h"
       4             : #include "FileSystemBinding.h"
       5             : #include "WrapperFactory.h"
       6             : #include "mozilla/OwningNonNull.h"
       7             : #include "mozilla/dom/BindingUtils.h"
       8             : #include "mozilla/dom/DOMException.h"
       9             : #include "mozilla/dom/DOMJSClass.h"
      10             : #include "mozilla/dom/FileSystem.h"
      11             : #include "mozilla/dom/FileSystemDirectoryEntry.h"
      12             : #include "mozilla/dom/FileSystemEntry.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 : FileSystemFlags::FileSystemFlags()
      24             : {
      25             :   // Safe to pass a null context if we pass a null value
      26           0 :   Init(nullptr, JS::NullHandleValue);
      27           0 : }
      28             : 
      29             : 
      30             : 
      31             : bool
      32           0 : FileSystemFlags::InitIds(JSContext* cx, FileSystemFlagsAtoms* atomsCache)
      33             : {
      34           0 :   MOZ_ASSERT(!*reinterpret_cast<jsid**>(atomsCache));
      35             : 
      36             :   // Initialize these in reverse order so that any failure leaves the first one
      37             :   // uninitialized.
      38           0 :   if (!atomsCache->exclusive_id.init(cx, "exclusive") ||
      39           0 :       !atomsCache->create_id.init(cx, "create")) {
      40           0 :     return false;
      41             :   }
      42           0 :   return true;
      43             : }
      44             : 
      45             : bool
      46           0 : FileSystemFlags::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 :   FileSystemFlagsAtoms* atomsCache = nullptr;
      54           0 :   if (cx) {
      55           0 :     atomsCache = GetAtomCache<FileSystemFlagsAtoms>(cx);
      56           0 :     if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {
      57           0 :       return false;
      58             :     }
      59             :   }
      60             : 
      61           0 :   if (!IsConvertibleToDictionary(val)) {
      62           0 :     return ThrowErrorMessage(cx, MSG_NOT_DICTIONARY, sourceDescription);
      63             :   }
      64             : 
      65           0 :   bool isNull = val.isNullOrUndefined();
      66             :   // We only need these if !isNull, in which case we have |cx|.
      67           0 :   Maybe<JS::Rooted<JSObject *> > object;
      68           0 :   Maybe<JS::Rooted<JS::Value> > temp;
      69           0 :   if (!isNull) {
      70           0 :     MOZ_ASSERT(cx);
      71           0 :     object.emplace(cx, &val.toObject());
      72           0 :     temp.emplace(cx);
      73             :   }
      74           0 :   if (!isNull) {
      75           0 :     if (!JS_GetPropertyById(cx, *object, atomsCache->create_id, temp.ptr())) {
      76           0 :       return false;
      77             :     }
      78             :   }
      79           0 :   if (!isNull && !temp->isUndefined()) {
      80           0 :     if (!ValueToPrimitive<bool, eDefault>(cx, temp.ref(), &mCreate)) {
      81           0 :       return false;
      82             :     }
      83             :   } else {
      84           0 :     mCreate = false;
      85             :   }
      86           0 :   mIsAnyMemberPresent = true;
      87             : 
      88           0 :   if (!isNull) {
      89           0 :     if (!JS_GetPropertyById(cx, *object, atomsCache->exclusive_id, temp.ptr())) {
      90           0 :       return false;
      91             :     }
      92             :   }
      93           0 :   if (!isNull && !temp->isUndefined()) {
      94           0 :     if (!ValueToPrimitive<bool, eDefault>(cx, temp.ref(), &mExclusive)) {
      95           0 :       return false;
      96             :     }
      97             :   } else {
      98           0 :     mExclusive = false;
      99             :   }
     100           0 :   mIsAnyMemberPresent = true;
     101           0 :   return true;
     102             : }
     103             : 
     104             : bool
     105           0 : FileSystemFlags::Init(const nsAString& aJSON)
     106             : {
     107           0 :   AutoJSAPI jsapi;
     108           0 :   JSObject* cleanGlobal = SimpleGlobalObject::Create(SimpleGlobalObject::GlobalType::BindingDetail);
     109           0 :   if (!cleanGlobal) {
     110           0 :     return false;
     111             :   }
     112           0 :   if (!jsapi.Init(cleanGlobal)) {
     113           0 :     return false;
     114             :   }
     115           0 :   JSContext* cx = jsapi.cx();
     116           0 :   JS::Rooted<JS::Value> json(cx);
     117           0 :   bool ok = ParseJSON(cx, aJSON, &json);
     118           0 :   NS_ENSURE_TRUE(ok, false);
     119           0 :   return Init(cx, json);
     120             : }
     121             : 
     122             : bool
     123           0 : FileSystemFlags::ToObjectInternal(JSContext* cx, JS::MutableHandle<JS::Value> rval) const
     124             : {
     125           0 :   FileSystemFlagsAtoms* atomsCache = GetAtomCache<FileSystemFlagsAtoms>(cx);
     126           0 :   if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {
     127           0 :     return false;
     128             :   }
     129             : 
     130           0 :   JS::Rooted<JSObject*> obj(cx, JS_NewPlainObject(cx));
     131           0 :   if (!obj) {
     132           0 :     return false;
     133             :   }
     134           0 :   rval.set(JS::ObjectValue(*obj));
     135             : 
     136             :   do {
     137             :     // block for our 'break' successCode and scope for 'temp' and 'currentValue'
     138           0 :     JS::Rooted<JS::Value> temp(cx);
     139           0 :     bool const & currentValue = mCreate;
     140           0 :     temp.setBoolean(currentValue);
     141           0 :     if (!JS_DefinePropertyById(cx, obj, atomsCache->create_id, temp, JSPROP_ENUMERATE)) {
     142           0 :       return false;
     143             :     }
     144           0 :     break;
     145             :   } while(0);
     146             : 
     147             :   do {
     148             :     // block for our 'break' successCode and scope for 'temp' and 'currentValue'
     149           0 :     JS::Rooted<JS::Value> temp(cx);
     150           0 :     bool const & currentValue = mExclusive;
     151           0 :     temp.setBoolean(currentValue);
     152           0 :     if (!JS_DefinePropertyById(cx, obj, atomsCache->exclusive_id, temp, JSPROP_ENUMERATE)) {
     153           0 :       return false;
     154             :     }
     155           0 :     break;
     156             :   } while(0);
     157             : 
     158           0 :   return true;
     159             : }
     160             : 
     161             : bool
     162           0 : FileSystemFlags::ToJSON(nsAString& aJSON) const
     163             : {
     164           0 :   AutoJSAPI jsapi;
     165           0 :   jsapi.Init();
     166           0 :   JSContext *cx = jsapi.cx();
     167             :   // It's safe to use UnprivilegedJunkScopeOrWorkerGlobal here
     168             :   // because we'll only be creating objects, in ways that have no
     169             :   // side-effects, followed by a call to JS::ToJSONMaybeSafely,
     170             :   // which likewise guarantees no side-effects for the sorts of
     171             :   // things we will pass it.
     172           0 :   JSAutoCompartment ac(cx, binding_detail::UnprivilegedJunkScopeOrWorkerGlobal());
     173           0 :   JS::Rooted<JS::Value> val(cx);
     174           0 :   if (!ToObjectInternal(cx, &val)) {
     175           0 :     return false;
     176             :   }
     177           0 :   JS::Rooted<JSObject*> obj(cx, &val.toObject());
     178           0 :   return StringifyToJSON(cx, obj, aJSON);
     179             : }
     180             : 
     181             : void
     182           0 : FileSystemFlags::TraceDictionary(JSTracer* trc)
     183             : {
     184           0 : }
     185             : 
     186             : FileSystemFlags&
     187           0 : FileSystemFlags::operator=(const FileSystemFlags& aOther)
     188             : {
     189           0 :   mCreate = aOther.mCreate;
     190           0 :   mExclusive = aOther.mExclusive;
     191           0 :   return *this;
     192             : }
     193             : 
     194             : namespace binding_detail {
     195             : } // namespace binding_detail
     196             : 
     197             : 
     198             : namespace FileSystemBinding {
     199             : 
     200             : static bool
     201           0 : get_name(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::FileSystem* self, JSJitGetterCallArgs args)
     202             : {
     203           0 :   DOMString result;
     204           0 :   self->GetName(result);
     205           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
     206           0 :   if (!xpc::NonVoidStringToJsval(cx, result, args.rval())) {
     207           0 :     return false;
     208             :   }
     209           0 :   return true;
     210             : }
     211             : 
     212             : static const JSJitInfo name_getterinfo = {
     213             :   { (JSJitGetterOp)get_name },
     214             :   { prototypes::id::FileSystem },
     215             :   { PrototypeTraits<prototypes::id::FileSystem>::Depth },
     216             :   JSJitInfo::Getter,
     217             :   JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
     218             :   JSVAL_TYPE_STRING,  /* returnType.  Not relevant for setters. */
     219             :   false,  /* isInfallible. False in setters. */
     220             :   false,  /* isMovable.  Not relevant for setters. */
     221             :   false, /* isEliminatable.  Not relevant for setters. */
     222             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
     223             :   false, /* isLazilyCachedInSlot.  Only relevant for getters. */
     224             :   false,  /* isTypedMethod.  Only relevant for methods. */
     225             :   0   /* Reserved slot index, if we're stored in a slot, else 0. */
     226             : };
     227             : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
     228             : static_assert(0 < 1, "There is no slot for us");
     229             : 
     230             : static bool
     231           0 : get_root(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::FileSystem* self, JSJitGetterCallArgs args)
     232             : {
     233           0 :   auto result(StrongOrRawPtr<mozilla::dom::FileSystemDirectoryEntry>(self->Root()));
     234           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
     235           0 :   if (!GetOrCreateDOMReflector(cx, result, args.rval())) {
     236           0 :     MOZ_ASSERT(true || JS_IsExceptionPending(cx));
     237           0 :     return false;
     238             :   }
     239           0 :   return true;
     240             : }
     241             : 
     242             : static const JSJitInfo root_getterinfo = {
     243             :   { (JSJitGetterOp)get_root },
     244             :   { prototypes::id::FileSystem },
     245             :   { PrototypeTraits<prototypes::id::FileSystem>::Depth },
     246             :   JSJitInfo::Getter,
     247             :   JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
     248             :   JSVAL_TYPE_OBJECT,  /* returnType.  Not relevant for setters. */
     249             :   false,  /* isInfallible. False in setters. */
     250             :   false,  /* isMovable.  Not relevant for setters. */
     251             :   false, /* isEliminatable.  Not relevant for setters. */
     252             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
     253             :   false, /* isLazilyCachedInSlot.  Only relevant for getters. */
     254             :   false,  /* isTypedMethod.  Only relevant for methods. */
     255             :   0   /* Reserved slot index, if we're stored in a slot, else 0. */
     256             : };
     257             : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
     258             : static_assert(0 < 1, "There is no slot for us");
     259             : 
     260             : static bool
     261           0 : _addProperty(JSContext* cx, JS::Handle<JSObject*> obj, JS::Handle<jsid> id, JS::Handle<JS::Value> val)
     262             : {
     263           0 :   mozilla::dom::FileSystem* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::FileSystem>(obj);
     264             :   // We don't want to preserve if we don't have a wrapper, and we
     265             :   // obviously can't preserve if we're not initialized.
     266           0 :   if (self && self->GetWrapperPreserveColor()) {
     267           0 :     PreserveWrapper(self);
     268             :   }
     269           0 :   return true;
     270             : }
     271             : 
     272             : static void
     273           0 : _finalize(js::FreeOp* fop, JSObject* obj)
     274             : {
     275           0 :   mozilla::dom::FileSystem* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::FileSystem>(obj);
     276           0 :   if (self) {
     277           0 :     ClearWrapper(self, self, obj);
     278           0 :     AddForDeferredFinalization<mozilla::dom::FileSystem>(self);
     279             :   }
     280           0 : }
     281             : 
     282             : static void
     283           0 : _objectMoved(JSObject* obj, const JSObject* old)
     284             : {
     285           0 :   mozilla::dom::FileSystem* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::FileSystem>(obj);
     286           0 :   if (self) {
     287           0 :     UpdateWrapper(self, self, obj, old);
     288             :   }
     289           0 : }
     290             : 
     291             : // We deliberately use brace-elision to make Visual Studio produce better initalization code.
     292             : #if defined(__clang__)
     293             : #pragma clang diagnostic push
     294             : #pragma clang diagnostic ignored "-Wmissing-braces"
     295             : #endif
     296             : static const JSPropertySpec sAttributes_specs[] = {
     297             :   { "name", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &name_getterinfo, nullptr, nullptr },
     298             :   { "root", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &root_getterinfo, nullptr, nullptr },
     299             :   { nullptr, 0, nullptr, nullptr, nullptr, nullptr }
     300             : };
     301             : #if defined(__clang__)
     302             : #pragma clang diagnostic pop
     303             : #endif
     304             : 
     305             : 
     306             : // Can't be const because the pref-enabled boolean needs to be writable
     307             : static Prefable<const JSPropertySpec> sAttributes[] = {
     308             :   { nullptr, &sAttributes_specs[0] },
     309             :   { nullptr, nullptr }
     310             : };
     311             : 
     312             : static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
     313             :     "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
     314             : static_assert(2 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
     315             :     "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");
     316             : 
     317             : 
     318             : static uint16_t sNativeProperties_sortedPropertyIndices[2];
     319             : static PropertyInfo sNativeProperties_propertyInfos[2];
     320             : 
     321             : static const NativePropertiesN<1> sNativeProperties = {
     322             :   false, 0,
     323             :   false, 0,
     324             :   false, 0,
     325             :   true,  0 /* sAttributes */,
     326             :   false, 0,
     327             :   false, 0,
     328             :   false, 0,
     329             :   -1,
     330             :   2,
     331             :   sNativeProperties_sortedPropertyIndices,
     332             :   {
     333             :     { sAttributes, &sNativeProperties_propertyInfos[0] }
     334             :   }
     335             : };
     336             : static_assert(2 < 1ull << CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount),
     337             :     "We have a property info count that is oversized");
     338             : 
     339             : static const DOMIfaceAndProtoJSClass sInterfaceObjectClass = {
     340             :   {
     341             :     "Function",
     342             :     JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_SLOTS_BASE),
     343             :     &sBoringInterfaceObjectClassClassOps,
     344             :     JS_NULL_CLASS_SPEC,
     345             :     JS_NULL_CLASS_EXT,
     346             :     &sInterfaceObjectClassObjectOps
     347             :   },
     348             :   eInterface,
     349             :   true,
     350             :   prototypes::id::FileSystem,
     351             :   PrototypeTraits<prototypes::id::FileSystem>::Depth,
     352             :   sNativePropertyHooks,
     353             :   "function FileSystem() {\n    [native code]\n}",
     354             :   JS::GetRealmFunctionPrototype
     355             : };
     356             : 
     357             : static const DOMIfaceAndProtoJSClass sPrototypeClass = {
     358             :   {
     359             :     "FileSystemPrototype",
     360             :     JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE),
     361             :     JS_NULL_CLASS_OPS,
     362             :     JS_NULL_CLASS_SPEC,
     363             :     JS_NULL_CLASS_EXT,
     364             :     JS_NULL_OBJECT_OPS
     365             :   },
     366             :   eInterfacePrototype,
     367             :   false,
     368             :   prototypes::id::FileSystem,
     369             :   PrototypeTraits<prototypes::id::FileSystem>::Depth,
     370             :   sNativePropertyHooks,
     371             :   "[object FileSystemPrototype]",
     372             :   JS::GetRealmObjectPrototype
     373             : };
     374             : 
     375             : JSObject*
     376           0 : DefineDOMInterface(JSContext* aCx, JS::Handle<JSObject*> aGlobal, JS::Handle<jsid> id, bool aDefineOnGlobal)
     377             : {
     378           0 :   return GetConstructorObjectHandle(aCx, aDefineOnGlobal);
     379             : }
     380             : 
     381             : static const js::ClassOps sClassOps = {
     382             :   _addProperty, /* addProperty */
     383             :   nullptr,               /* delProperty */
     384             :   nullptr,               /* getProperty */
     385             :   nullptr,               /* setProperty */
     386             :   nullptr,               /* enumerate */
     387             :   nullptr, /* newEnumerate */
     388             :   nullptr, /* resolve */
     389             :   nullptr, /* mayResolve */
     390             :   _finalize, /* finalize */
     391             :   nullptr, /* call */
     392             :   nullptr,               /* hasInstance */
     393             :   nullptr,               /* construct */
     394             :   nullptr, /* trace */
     395             : };
     396             : 
     397             : static const js::ClassExtension sClassExtension = {
     398             :   nullptr, /* weakmapKeyDelegateOp */
     399             :   _objectMoved /* objectMovedOp */
     400             : };
     401             : 
     402             : static const DOMJSClass sClass = {
     403             :   { "FileSystem",
     404             :     JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(1),
     405             :     &sClassOps,
     406             :     JS_NULL_CLASS_SPEC,
     407             :     &sClassExtension,
     408             :     JS_NULL_OBJECT_OPS
     409             :   },
     410             :   { prototypes::id::FileSystem, 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 },
     411             :   IsBaseOf<nsISupports, mozilla::dom::FileSystem >::value,
     412             :   sNativePropertyHooks,
     413             :   FindAssociatedGlobalForNative<mozilla::dom::FileSystem>::Get,
     414             :   GetProtoObjectHandle,
     415             :   GetCCParticipant<mozilla::dom::FileSystem>::Get()
     416             : };
     417             : static_assert(1 == DOM_INSTANCE_RESERVED_SLOTS,
     418             :               "Must have the right minimal number of reserved slots.");
     419             : static_assert(1 >= 1,
     420             :               "Must have enough reserved slots.");
     421             : 
     422             : const JSClass*
     423           0 : GetJSClass()
     424             : {
     425           0 :   return sClass.ToJSClass();
     426             : }
     427             : 
     428             : bool
     429           0 : Wrap(JSContext* aCx, mozilla::dom::FileSystem* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
     430             : {
     431             :   MOZ_ASSERT(static_cast<mozilla::dom::FileSystem*>(aObject) ==
     432             :              reinterpret_cast<mozilla::dom::FileSystem*>(aObject),
     433             :              "Multiple inheritance for mozilla::dom::FileSystem is broken.");
     434           0 :   MOZ_ASSERT(ToSupportsIsCorrect(aObject));
     435           0 :   MOZ_ASSERT_IF(aGivenProto, js::IsObjectInContextCompartment(aGivenProto, aCx));
     436           0 :   MOZ_ASSERT(!aCache->GetWrapper(),
     437             :              "You should probably not be using Wrap() directly; use "
     438             :              "GetOrCreateDOMReflector instead");
     439             : 
     440           0 :   MOZ_ASSERT(ToSupportsIsOnPrimaryInheritanceChain(aObject, aCache),
     441             :              "nsISupports must be on our primary inheritance chain");
     442             : 
     443           0 :   JS::Rooted<JSObject*> global(aCx, FindAssociatedGlobal(aCx, aObject->GetParentObject()));
     444           0 :   if (!global) {
     445           0 :     return false;
     446             :   }
     447           0 :   MOZ_ASSERT(JS_IsGlobalObject(global));
     448           0 :   MOZ_ASSERT(JS::ObjectIsNotGray(global));
     449             : 
     450             :   // That might have ended up wrapping us already, due to the wonders
     451             :   // of XBL.  Check for that, and bail out as needed.
     452           0 :   aReflector.set(aCache->GetWrapper());
     453           0 :   if (aReflector) {
     454             : #ifdef DEBUG
     455           0 :     binding_detail::AssertReflectorHasGivenProto(aCx, aReflector, aGivenProto);
     456             : #endif // DEBUG
     457           0 :     return true;
     458             :   }
     459             : 
     460           0 :   JSAutoCompartment ac(aCx, global);
     461           0 :   JS::Handle<JSObject*> canonicalProto = GetProtoObjectHandle(aCx);
     462           0 :   if (!canonicalProto) {
     463           0 :     return false;
     464             :   }
     465           0 :   JS::Rooted<JSObject*> proto(aCx);
     466           0 :   if (aGivenProto) {
     467           0 :     proto = aGivenProto;
     468             :     // Unfortunately, while aGivenProto was in the compartment of aCx
     469             :     // coming in, we changed compartments to that of "parent" so may need
     470             :     // to wrap the proto here.
     471           0 :     if (js::GetContextCompartment(aCx) != js::GetObjectCompartment(proto)) {
     472           0 :       if (!JS_WrapObject(aCx, &proto)) {
     473           0 :         return false;
     474             :       }
     475             :     }
     476             :   } else {
     477           0 :     proto = canonicalProto;
     478             :   }
     479             : 
     480           0 :   BindingJSObjectCreator<mozilla::dom::FileSystem> creator(aCx);
     481           0 :   creator.CreateObject(aCx, sClass.ToJSClass(), proto, aObject, aReflector);
     482           0 :   if (!aReflector) {
     483           0 :     return false;
     484             :   }
     485             : 
     486           0 :   aCache->SetWrapper(aReflector);
     487           0 :   creator.InitializationSucceeded();
     488             : 
     489           0 :   MOZ_ASSERT(aCache->GetWrapperPreserveColor() &&
     490             :              aCache->GetWrapperPreserveColor() == aReflector);
     491             :   // If proto != canonicalProto, we have to preserve our wrapper;
     492             :   // otherwise we won't be able to properly recreate it later, since
     493             :   // we won't know what proto to use.  Note that we don't check
     494             :   // aGivenProto here, since it's entirely possible (and even
     495             :   // somewhat common) to have a non-null aGivenProto which is the
     496             :   // same as canonicalProto.
     497           0 :   if (proto != canonicalProto) {
     498           0 :     PreserveWrapper(aObject);
     499             :   }
     500             : 
     501           0 :   return true;
     502             : }
     503             : 
     504             : const NativePropertyHooks sNativePropertyHooks[] = { {
     505             :   nullptr,
     506             :   nullptr,
     507             :   nullptr,
     508             :   { sNativeProperties.Upcast(), nullptr },
     509             :   prototypes::id::FileSystem,
     510             :   constructors::id::FileSystem,
     511             :   nullptr,
     512             :   &DefaultXrayExpandoObjectClass
     513             : } };
     514             : 
     515             : void
     516           0 : CreateInterfaceObjects(JSContext* aCx, JS::Handle<JSObject*> aGlobal, ProtoAndIfaceCache& aProtoAndIfaceCache, bool aDefineOnGlobal)
     517             : {
     518           0 :   JS::Rooted<JSObject*> parentProto(aCx, JS::GetRealmObjectPrototype(aCx));
     519           0 :   if (!parentProto) {
     520           0 :     return;
     521             :   }
     522             : 
     523           0 :   JS::Rooted<JSObject*> constructorProto(aCx, JS::GetRealmFunctionPrototype(aCx));
     524           0 :   if (!constructorProto) {
     525           0 :     return;
     526             :   }
     527             : 
     528             :   static bool sIdsInited = false;
     529           0 :   if (!sIdsInited && NS_IsMainThread()) {
     530           0 :     if (!InitIds(aCx, sNativeProperties.Upcast())) {
     531           0 :       return;
     532             :     }
     533           0 :     sIdsInited = true;
     534             :   }
     535             : 
     536           0 :   JS::Heap<JSObject*>* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::FileSystem);
     537           0 :   JS::Heap<JSObject*>* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::FileSystem);
     538           0 :   dom::CreateInterfaceObjects(aCx, aGlobal, parentProto,
     539             :                               &sPrototypeClass.mBase, protoCache,
     540             :                               constructorProto, &sInterfaceObjectClass.mBase, 0, nullptr,
     541             :                               interfaceCache,
     542             :                               sNativeProperties.Upcast(),
     543             :                               nullptr,
     544             :                               "FileSystem", aDefineOnGlobal,
     545             :                               nullptr,
     546           0 :                               false);
     547             : }
     548             : 
     549             : JS::Handle<JSObject*>
     550           0 : GetProtoObjectHandle(JSContext* aCx)
     551             : {
     552             :   /* Get the interface prototype object for this class.  This will create the
     553             :      object as needed. */
     554           0 :   bool aDefineOnGlobal = true;
     555             : 
     556             :   /* Make sure our global is sane.  Hopefully we can remove this sometime */
     557           0 :   JSObject* global = JS::CurrentGlobalOrNull(aCx);
     558           0 :   if (!(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL)) {
     559           0 :     return nullptr;
     560             :   }
     561             : 
     562             :   /* Check to see whether the interface objects are already installed */
     563           0 :   ProtoAndIfaceCache& protoAndIfaceCache = *GetProtoAndIfaceCache(global);
     564           0 :   if (!protoAndIfaceCache.HasEntryInSlot(prototypes::id::FileSystem)) {
     565           0 :     JS::Rooted<JSObject*> rootedGlobal(aCx, global);
     566           0 :     CreateInterfaceObjects(aCx, rootedGlobal, protoAndIfaceCache, aDefineOnGlobal);
     567             :   }
     568             : 
     569             :   /*
     570             :    * The object might _still_ be null, but that's OK.
     571             :    *
     572             :    * Calling fromMarkedLocation() is safe because protoAndIfaceCache is
     573             :    * traced by TraceProtoAndIfaceCache() and its contents are never
     574             :    * changed after they have been set.
     575             :    *
     576             :    * Calling address() avoids the read read barrier that does gray
     577             :    * unmarking, but it's not possible for the object to be gray here.
     578             :    */
     579             : 
     580           0 :   const JS::Heap<JSObject*>& entrySlot = protoAndIfaceCache.EntrySlotMustExist(prototypes::id::FileSystem);
     581           0 :   MOZ_ASSERT(JS::ObjectIsNotGray(entrySlot));
     582           0 :   return JS::Handle<JSObject*>::fromMarkedLocation(entrySlot.address());
     583             : }
     584             : 
     585             : JS::Handle<JSObject*>
     586           0 : GetConstructorObjectHandle(JSContext* aCx, bool aDefineOnGlobal)
     587             : {
     588             :   /* Get the interface object for this class.  This will create the object as
     589             :      needed. */
     590             : 
     591             :   /* Make sure our global is sane.  Hopefully we can remove this sometime */
     592           0 :   JSObject* global = JS::CurrentGlobalOrNull(aCx);
     593           0 :   if (!(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL)) {
     594           0 :     return nullptr;
     595             :   }
     596             : 
     597             :   /* Check to see whether the interface objects are already installed */
     598           0 :   ProtoAndIfaceCache& protoAndIfaceCache = *GetProtoAndIfaceCache(global);
     599           0 :   if (!protoAndIfaceCache.HasEntryInSlot(constructors::id::FileSystem)) {
     600           0 :     JS::Rooted<JSObject*> rootedGlobal(aCx, global);
     601           0 :     CreateInterfaceObjects(aCx, rootedGlobal, protoAndIfaceCache, aDefineOnGlobal);
     602             :   }
     603             : 
     604             :   /*
     605             :    * The object might _still_ be null, but that's OK.
     606             :    *
     607             :    * Calling fromMarkedLocation() is safe because protoAndIfaceCache is
     608             :    * traced by TraceProtoAndIfaceCache() and its contents are never
     609             :    * changed after they have been set.
     610             :    *
     611             :    * Calling address() avoids the read read barrier that does gray
     612             :    * unmarking, but it's not possible for the object to be gray here.
     613             :    */
     614             : 
     615           0 :   const JS::Heap<JSObject*>& entrySlot = protoAndIfaceCache.EntrySlotMustExist(constructors::id::FileSystem);
     616           0 :   MOZ_ASSERT(JS::ObjectIsNotGray(entrySlot));
     617           0 :   return JS::Handle<JSObject*>::fromMarkedLocation(entrySlot.address());
     618             : }
     619             : 
     620             : JSObject*
     621           0 : GetConstructorObject(JSContext* aCx)
     622             : {
     623           0 :   return GetConstructorObjectHandle(aCx);
     624             : }
     625             : 
     626             : } // namespace FileSystemBinding
     627             : 
     628             : 
     629             : 
     630             : void
     631           0 : ErrorCallback::HandleEvent(JSContext* cx, JS::Handle<JS::Value> aThisVal, DOMException& err, ErrorResult& aRv)
     632             : {
     633           0 :   JS::Rooted<JS::Value> rval(cx, JS::UndefinedValue());
     634           0 :   JS::AutoValueVector argv(cx);
     635           0 :   if (!argv.resize(1)) {
     636           0 :     aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
     637           0 :     return;
     638             :   }
     639           0 :   unsigned argc = 1;
     640             : 
     641             :   do {
     642           0 :     if (!GetOrCreateDOMReflector(cx, err, argv[0])) {
     643           0 :       MOZ_ASSERT(true || JS_IsExceptionPending(cx));
     644           0 :       aRv.Throw(NS_ERROR_UNEXPECTED);
     645           0 :       return;
     646             :     }
     647           0 :     break;
     648             :   } while (0);
     649             : 
     650           0 :   bool isCallable = JS::IsCallable(mCallback);
     651           0 :   JS::Rooted<JS::Value> callable(cx);
     652           0 :   if (isCallable) {
     653           0 :     callable = JS::ObjectValue(*mCallback);
     654             :   } else {
     655           0 :     ErrorCallbackAtoms* atomsCache = GetAtomCache<ErrorCallbackAtoms>(cx);
     656           0 :     if ((!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) ||
     657           0 :         !GetCallableProperty(cx, atomsCache->handleEvent_id, &callable)) {
     658           0 :       aRv.Throw(NS_ERROR_UNEXPECTED);
     659           0 :       return;
     660             :     }
     661             :   }
     662           0 :   JS::Rooted<JS::Value> thisValue(cx, isCallable ? aThisVal.get()
     663           0 :                                                  : JS::ObjectValue(*mCallback));
     664           0 :   if (!JS::Call(cx, thisValue, callable,
     665           0 :                 JS::HandleValueArray::subarray(argv, 0, argc), &rval)) {
     666           0 :     aRv.NoteJSContextException(cx);
     667           0 :     return;
     668             :   }
     669             : }
     670             : 
     671             : bool
     672           0 : ErrorCallback::InitIds(JSContext* cx, ErrorCallbackAtoms* atomsCache)
     673             : {
     674           0 :   MOZ_ASSERT(!*reinterpret_cast<jsid**>(atomsCache));
     675             : 
     676             :   // Initialize these in reverse order so that any failure leaves the first one
     677             :   // uninitialized.
     678           0 :   if (!atomsCache->handleEvent_id.init(cx, "handleEvent")) {
     679           0 :     return false;
     680             :   }
     681           0 :   return true;
     682             : }
     683             : 
     684             : 
     685             : 
     686             : void
     687           0 : FileSystemEntryCallback::HandleEvent(JSContext* cx, JS::Handle<JS::Value> aThisVal, FileSystemEntry& entry, ErrorResult& aRv)
     688             : {
     689           0 :   JS::Rooted<JS::Value> rval(cx, JS::UndefinedValue());
     690           0 :   JS::AutoValueVector argv(cx);
     691           0 :   if (!argv.resize(1)) {
     692           0 :     aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
     693           0 :     return;
     694             :   }
     695           0 :   unsigned argc = 1;
     696             : 
     697             :   do {
     698           0 :     if (!GetOrCreateDOMReflector(cx, entry, argv[0])) {
     699           0 :       MOZ_ASSERT(true || JS_IsExceptionPending(cx));
     700           0 :       aRv.Throw(NS_ERROR_UNEXPECTED);
     701           0 :       return;
     702             :     }
     703           0 :     break;
     704             :   } while (0);
     705             : 
     706           0 :   bool isCallable = JS::IsCallable(mCallback);
     707           0 :   JS::Rooted<JS::Value> callable(cx);
     708           0 :   if (isCallable) {
     709           0 :     callable = JS::ObjectValue(*mCallback);
     710             :   } else {
     711           0 :     FileSystemEntryCallbackAtoms* atomsCache = GetAtomCache<FileSystemEntryCallbackAtoms>(cx);
     712           0 :     if ((!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) ||
     713           0 :         !GetCallableProperty(cx, atomsCache->handleEvent_id, &callable)) {
     714           0 :       aRv.Throw(NS_ERROR_UNEXPECTED);
     715           0 :       return;
     716             :     }
     717             :   }
     718           0 :   JS::Rooted<JS::Value> thisValue(cx, isCallable ? aThisVal.get()
     719           0 :                                                  : JS::ObjectValue(*mCallback));
     720           0 :   if (!JS::Call(cx, thisValue, callable,
     721           0 :                 JS::HandleValueArray::subarray(argv, 0, argc), &rval)) {
     722           0 :     aRv.NoteJSContextException(cx);
     723           0 :     return;
     724             :   }
     725             : }
     726             : 
     727             : bool
     728           0 : FileSystemEntryCallback::InitIds(JSContext* cx, FileSystemEntryCallbackAtoms* atomsCache)
     729             : {
     730           0 :   MOZ_ASSERT(!*reinterpret_cast<jsid**>(atomsCache));
     731             : 
     732             :   // Initialize these in reverse order so that any failure leaves the first one
     733             :   // uninitialized.
     734           0 :   if (!atomsCache->handleEvent_id.init(cx, "handleEvent")) {
     735           0 :     return false;
     736             :   }
     737           0 :   return true;
     738             : }
     739             : 
     740             : 
     741             : 
     742             : void
     743           0 : VoidCallback::HandleEvent(JSContext* cx, JS::Handle<JS::Value> aThisVal, ErrorResult& aRv)
     744             : {
     745           0 :   JS::Rooted<JS::Value> rval(cx, JS::UndefinedValue());
     746             : 
     747           0 :   bool isCallable = JS::IsCallable(mCallback);
     748           0 :   JS::Rooted<JS::Value> callable(cx);
     749           0 :   if (isCallable) {
     750           0 :     callable = JS::ObjectValue(*mCallback);
     751             :   } else {
     752           0 :     VoidCallbackAtoms* atomsCache = GetAtomCache<VoidCallbackAtoms>(cx);
     753           0 :     if ((!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) ||
     754           0 :         !GetCallableProperty(cx, atomsCache->handleEvent_id, &callable)) {
     755           0 :       aRv.Throw(NS_ERROR_UNEXPECTED);
     756           0 :       return;
     757             :     }
     758             :   }
     759           0 :   JS::Rooted<JS::Value> thisValue(cx, isCallable ? aThisVal.get()
     760           0 :                                                  : JS::ObjectValue(*mCallback));
     761           0 :   if (!JS::Call(cx, thisValue, callable,
     762           0 :                 JS::HandleValueArray::empty(), &rval)) {
     763           0 :     aRv.NoteJSContextException(cx);
     764           0 :     return;
     765             :   }
     766             : }
     767             : 
     768             : bool
     769           0 : VoidCallback::InitIds(JSContext* cx, VoidCallbackAtoms* atomsCache)
     770             : {
     771           0 :   MOZ_ASSERT(!*reinterpret_cast<jsid**>(atomsCache));
     772             : 
     773             :   // Initialize these in reverse order so that any failure leaves the first one
     774             :   // uninitialized.
     775           0 :   if (!atomsCache->handleEvent_id.init(cx, "handleEvent")) {
     776           0 :     return false;
     777             :   }
     778           0 :   return true;
     779             : }
     780             : 
     781             : 
     782             : 
     783             : namespace binding_detail {
     784             : } // namespace binding_detail
     785             : 
     786             : 
     787             : namespace binding_detail {
     788             : } // namespace binding_detail
     789             : 
     790             : 
     791             : namespace binding_detail {
     792             : } // namespace binding_detail
     793             : 
     794             : 
     795             : } // namespace dom
     796             : } // namespace mozilla

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