LCOV - code coverage report
Current view: top level - obj-x86_64-pc-linux-gnu/dom/bindings - GamepadBinding.cpp (source / functions) Hit Total Coverage
Test: output.info Lines: 0 409 0.0 %
Date: 2017-07-14 16:53:18 Functions: 0 39 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* THIS FILE IS AUTOGENERATED FROM Gamepad.webidl BY Codegen.py - DO NOT EDIT */
       2             : 
       3             : #include "GamepadBinding.h"
       4             : #include "WrapperFactory.h"
       5             : #include "XrayWrapper.h"
       6             : #include "jsapi.h"
       7             : #include "mozilla/FloatingPoint.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/Gamepad.h"
      13             : #include "mozilla/dom/GamepadButton.h"
      14             : #include "mozilla/dom/GamepadHapticActuator.h"
      15             : #include "mozilla/dom/GamepadPose.h"
      16             : #include "mozilla/dom/NonRefcountedDOMObject.h"
      17             : #include "mozilla/dom/Nullable.h"
      18             : #include "mozilla/dom/PrimitiveConversions.h"
      19             : #include "mozilla/dom/XrayExpandoClass.h"
      20             : 
      21             : namespace mozilla {
      22             : namespace dom {
      23             : 
      24             : namespace GamepadHandValues {
      25             : extern const EnumEntry strings[4] = {
      26             :   {"", 0},
      27             :   {"left", 4},
      28             :   {"right", 5},
      29             :   { nullptr, 0 }
      30             : };
      31             : } // namespace GamepadHandValues
      32             : 
      33             : bool
      34           0 : ToJSValue(JSContext* aCx, GamepadHand aArgument, JS::MutableHandle<JS::Value> aValue)
      35             : {
      36           0 :   MOZ_ASSERT(uint32_t(aArgument) < ArrayLength(GamepadHandValues::strings));
      37             :   JSString* resultStr =
      38           0 :     JS_NewStringCopyN(aCx, GamepadHandValues::strings[uint32_t(aArgument)].value,
      39           0 :                       GamepadHandValues::strings[uint32_t(aArgument)].length);
      40           0 :   if (!resultStr) {
      41           0 :     return false;
      42             :   }
      43           0 :   aValue.setString(resultStr);
      44           0 :   return true;
      45             : }
      46             : 
      47             : 
      48             : namespace GamepadMappingTypeValues {
      49             : extern const EnumEntry strings[3] = {
      50             :   {"", 0},
      51             :   {"standard", 8},
      52             :   { nullptr, 0 }
      53             : };
      54             : } // namespace GamepadMappingTypeValues
      55             : 
      56             : bool
      57           0 : ToJSValue(JSContext* aCx, GamepadMappingType aArgument, JS::MutableHandle<JS::Value> aValue)
      58             : {
      59           0 :   MOZ_ASSERT(uint32_t(aArgument) < ArrayLength(GamepadMappingTypeValues::strings));
      60             :   JSString* resultStr =
      61           0 :     JS_NewStringCopyN(aCx, GamepadMappingTypeValues::strings[uint32_t(aArgument)].value,
      62           0 :                       GamepadMappingTypeValues::strings[uint32_t(aArgument)].length);
      63           0 :   if (!resultStr) {
      64           0 :     return false;
      65             :   }
      66           0 :   aValue.setString(resultStr);
      67           0 :   return true;
      68             : }
      69             : 
      70             : 
      71             : namespace GamepadBinding {
      72             : 
      73             : static bool
      74           0 : get_id(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::Gamepad* self, JSJitGetterCallArgs args)
      75             : {
      76           0 :   DOMString result;
      77           0 :   self->GetId(result);
      78           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
      79           0 :   if (!xpc::NonVoidStringToJsval(cx, result, args.rval())) {
      80           0 :     return false;
      81             :   }
      82           0 :   return true;
      83             : }
      84             : 
      85             : static const JSJitInfo id_getterinfo = {
      86             :   { (JSJitGetterOp)get_id },
      87             :   { prototypes::id::Gamepad },
      88             :   { PrototypeTraits<prototypes::id::Gamepad>::Depth },
      89             :   JSJitInfo::Getter,
      90             :   JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
      91             :   JSVAL_TYPE_STRING,  /* returnType.  Not relevant for setters. */
      92             :   false,  /* isInfallible. False in setters. */
      93             :   false,  /* isMovable.  Not relevant for setters. */
      94             :   false, /* isEliminatable.  Not relevant for setters. */
      95             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
      96             :   false, /* isLazilyCachedInSlot.  Only relevant for getters. */
      97             :   false,  /* isTypedMethod.  Only relevant for methods. */
      98             :   0   /* Reserved slot index, if we're stored in a slot, else 0. */
      99             : };
     100             : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
     101             : static_assert(0 < 4, "There is no slot for us");
     102             : 
     103             : static bool
     104           0 : get_index(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::Gamepad* self, JSJitGetterCallArgs args)
     105             : {
     106           0 :   uint32_t result(self->Index());
     107           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
     108           0 :   args.rval().setNumber(result);
     109           0 :   return true;
     110             : }
     111             : 
     112             : static const JSJitInfo index_getterinfo = {
     113             :   { (JSJitGetterOp)get_index },
     114             :   { prototypes::id::Gamepad },
     115             :   { PrototypeTraits<prototypes::id::Gamepad>::Depth },
     116             :   JSJitInfo::Getter,
     117             :   JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
     118             :   JSVAL_TYPE_DOUBLE,  /* returnType.  Not relevant for setters. */
     119             :   true,  /* isInfallible. False in setters. */
     120             :   false,  /* isMovable.  Not relevant for setters. */
     121             :   false, /* isEliminatable.  Not relevant for setters. */
     122             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
     123             :   false, /* isLazilyCachedInSlot.  Only relevant for getters. */
     124             :   false,  /* isTypedMethod.  Only relevant for methods. */
     125             :   0   /* Reserved slot index, if we're stored in a slot, else 0. */
     126             : };
     127             : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
     128             : static_assert(0 < 4, "There is no slot for us");
     129             : 
     130             : static bool
     131           0 : get_mapping(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::Gamepad* self, JSJitGetterCallArgs args)
     132             : {
     133           0 :   GamepadMappingType result(self->Mapping());
     134           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
     135           0 :   if (!ToJSValue(cx, result, args.rval())) {
     136           0 :     return false;
     137             :   }
     138           0 :   return true;
     139             : }
     140             : 
     141             : static const JSJitInfo mapping_getterinfo = {
     142             :   { (JSJitGetterOp)get_mapping },
     143             :   { prototypes::id::Gamepad },
     144             :   { PrototypeTraits<prototypes::id::Gamepad>::Depth },
     145             :   JSJitInfo::Getter,
     146             :   JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
     147             :   JSVAL_TYPE_STRING,  /* returnType.  Not relevant for setters. */
     148             :   false,  /* isInfallible. False in setters. */
     149             :   false,  /* isMovable.  Not relevant for setters. */
     150             :   false, /* isEliminatable.  Not relevant for setters. */
     151             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
     152             :   false, /* isLazilyCachedInSlot.  Only relevant for getters. */
     153             :   false,  /* isTypedMethod.  Only relevant for methods. */
     154             :   0   /* Reserved slot index, if we're stored in a slot, else 0. */
     155             : };
     156             : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
     157             : static_assert(0 < 4, "There is no slot for us");
     158             : 
     159             : static bool
     160           0 : get_hand(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::Gamepad* self, JSJitGetterCallArgs args)
     161             : {
     162           0 :   GamepadHand result(self->Hand());
     163           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
     164           0 :   if (!ToJSValue(cx, result, args.rval())) {
     165           0 :     return false;
     166             :   }
     167           0 :   return true;
     168             : }
     169             : 
     170             : static const JSJitInfo hand_getterinfo = {
     171             :   { (JSJitGetterOp)get_hand },
     172             :   { prototypes::id::Gamepad },
     173             :   { PrototypeTraits<prototypes::id::Gamepad>::Depth },
     174             :   JSJitInfo::Getter,
     175             :   JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
     176             :   JSVAL_TYPE_STRING,  /* returnType.  Not relevant for setters. */
     177             :   false,  /* isInfallible. False in setters. */
     178             :   false,  /* isMovable.  Not relevant for setters. */
     179             :   false, /* isEliminatable.  Not relevant for setters. */
     180             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
     181             :   false, /* isLazilyCachedInSlot.  Only relevant for getters. */
     182             :   false,  /* isTypedMethod.  Only relevant for methods. */
     183             :   0   /* Reserved slot index, if we're stored in a slot, else 0. */
     184             : };
     185             : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
     186             : static_assert(0 < 4, "There is no slot for us");
     187             : 
     188             : static bool
     189           0 : get_connected(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::Gamepad* self, JSJitGetterCallArgs args)
     190             : {
     191           0 :   bool result(self->Connected());
     192           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
     193           0 :   args.rval().setBoolean(result);
     194           0 :   return true;
     195             : }
     196             : 
     197             : static const JSJitInfo connected_getterinfo = {
     198             :   { (JSJitGetterOp)get_connected },
     199             :   { prototypes::id::Gamepad },
     200             :   { PrototypeTraits<prototypes::id::Gamepad>::Depth },
     201             :   JSJitInfo::Getter,
     202             :   JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
     203             :   JSVAL_TYPE_BOOLEAN,  /* returnType.  Not relevant for setters. */
     204             :   true,  /* isInfallible. False in setters. */
     205             :   false,  /* isMovable.  Not relevant for setters. */
     206             :   false, /* isEliminatable.  Not relevant for setters. */
     207             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
     208             :   false, /* isLazilyCachedInSlot.  Only relevant for getters. */
     209             :   false,  /* isTypedMethod.  Only relevant for methods. */
     210             :   0   /* Reserved slot index, if we're stored in a slot, else 0. */
     211             : };
     212             : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
     213             : static_assert(0 < 4, "There is no slot for us");
     214             : 
     215             : static bool
     216           0 : get_buttons(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::Gamepad* self, JSJitGetterCallArgs args)
     217             : {
     218             :   // Have to either root across the getter call or reget after.
     219             :   bool isXray;
     220           0 :   JS::Rooted<JSObject*> slotStorage(cx, GetCachedSlotStorageObject(cx, obj, &isXray));
     221           0 :   if (!slotStorage) {
     222           0 :     return false;
     223             :   }
     224           0 :   const size_t slotIndex = isXray ? (xpc::JSSLOT_EXPANDO_COUNT + 0) : (DOM_INSTANCE_RESERVED_SLOTS + 0);
     225           0 :   MOZ_ASSERT(JSCLASS_RESERVED_SLOTS(js::GetObjectClass(slotStorage)) > slotIndex);
     226             :   {
     227             :     // Scope for cachedVal
     228           0 :     JS::Value cachedVal = js::GetReservedSlot(slotStorage, slotIndex);
     229           0 :     if (!cachedVal.isUndefined()) {
     230           0 :       args.rval().set(cachedVal);
     231             :       // The cached value is in the compartment of slotStorage,
     232             :       // so wrap into the caller compartment as needed.
     233           0 :       return MaybeWrapNonDOMObjectValue(cx, args.rval());
     234             :     }
     235             :   }
     236             : 
     237           0 :   nsTArray<StrongPtrForMember<mozilla::dom::GamepadButton>::Type> result;
     238           0 :   self->GetButtons(result);
     239           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
     240             :   {
     241           0 :     JS::Rooted<JSObject*> conversionScope(cx, isXray ? obj : slotStorage);
     242           0 :     JSAutoCompartment ac(cx, conversionScope);
     243             :     do { // block we break out of when done wrapping
     244             : 
     245           0 :       uint32_t length = result.Length();
     246           0 :       JS::Rooted<JSObject*> returnArray(cx, JS_NewArrayObject(cx, length));
     247           0 :       if (!returnArray) {
     248           0 :         return false;
     249             :       }
     250             :       // Scope for 'tmp'
     251             :       {
     252           0 :         JS::Rooted<JS::Value> tmp(cx);
     253           0 :         for (uint32_t sequenceIdx0 = 0; sequenceIdx0 < length; ++sequenceIdx0) {
     254             :           // Control block to let us common up the JS_DefineElement calls when there
     255             :           // are different ways to succeed at wrapping the object.
     256             :           do {
     257           0 :             if (!GetOrCreateDOMReflector(cx, result[sequenceIdx0], &tmp)) {
     258           0 :               MOZ_ASSERT(true || JS_IsExceptionPending(cx));
     259           0 :               return false;
     260             :             }
     261           0 :             break;
     262             :           } while (0);
     263           0 :           if (!JS_DefineElement(cx, returnArray, sequenceIdx0, tmp,
     264             :                                 JSPROP_ENUMERATE)) {
     265           0 :             return false;
     266             :           }
     267             :         }
     268             :       }
     269           0 :       args.rval().setObject(*returnArray);
     270           0 :       break;
     271             :     } while (0);
     272           0 :     JS::Rooted<JSObject*> rvalObj(cx, &args.rval().toObject());
     273           0 :     if (!JS_FreezeObject(cx, rvalObj)) {
     274           0 :       return false;
     275             :     }
     276             :   }
     277             :   { // And now store things in the compartment of our slotStorage.
     278           0 :     JSAutoCompartment ac(cx, slotStorage);
     279             :     // Make a copy so that we don't do unnecessary wrapping on args.rval().
     280           0 :     JS::Rooted<JS::Value> storedVal(cx, args.rval());
     281           0 :     if (!MaybeWrapNonDOMObjectValue(cx, &storedVal)) {
     282           0 :       return false;
     283             :     }
     284           0 :     js::SetReservedSlot(slotStorage, slotIndex, storedVal);
     285           0 :     if (!isXray) {
     286             :       // In the Xray case we don't need to do this, because getting the
     287             :       // expando object already preserved our wrapper.
     288           0 :       PreserveWrapper(self);
     289             :     }
     290             :   }
     291             :   // And now make sure args.rval() is in the caller compartment
     292           0 :   return MaybeWrapNonDOMObjectValue(cx, args.rval());
     293             : }
     294             : 
     295             : static const JSJitInfo buttons_getterinfo = {
     296             :   { (JSJitGetterOp)get_buttons },
     297             :   { prototypes::id::Gamepad },
     298             :   { PrototypeTraits<prototypes::id::Gamepad>::Depth },
     299             :   JSJitInfo::Getter,
     300             :   JSJitInfo::AliasDOMSets, /* aliasSet.  Not relevant for setters. */
     301             :   JSVAL_TYPE_OBJECT,  /* returnType.  Not relevant for setters. */
     302             :   false,  /* isInfallible. False in setters. */
     303             :   true,  /* isMovable.  Not relevant for setters. */
     304             :   true, /* isEliminatable.  Not relevant for setters. */
     305             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
     306             :   true, /* isLazilyCachedInSlot.  Only relevant for getters. */
     307             :   false,  /* isTypedMethod.  Only relevant for methods. */
     308             :   (DOM_INSTANCE_RESERVED_SLOTS + 0)   /* Reserved slot index, if we're stored in a slot, else 0. */
     309             : };
     310             : static_assert((DOM_INSTANCE_RESERVED_SLOTS + 0) <= JSJitInfo::maxSlotIndex, "We won't fit");
     311             : static_assert((DOM_INSTANCE_RESERVED_SLOTS + 0) < 4, "There is no slot for us");
     312             : 
     313             : static bool
     314           0 : get_axes(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::Gamepad* self, JSJitGetterCallArgs args)
     315             : {
     316             :   // Have to either root across the getter call or reget after.
     317             :   bool isXray;
     318           0 :   JS::Rooted<JSObject*> slotStorage(cx, GetCachedSlotStorageObject(cx, obj, &isXray));
     319           0 :   if (!slotStorage) {
     320           0 :     return false;
     321             :   }
     322           0 :   const size_t slotIndex = isXray ? (xpc::JSSLOT_EXPANDO_COUNT + 1) : (DOM_INSTANCE_RESERVED_SLOTS + 1);
     323           0 :   MOZ_ASSERT(JSCLASS_RESERVED_SLOTS(js::GetObjectClass(slotStorage)) > slotIndex);
     324             :   {
     325             :     // Scope for cachedVal
     326           0 :     JS::Value cachedVal = js::GetReservedSlot(slotStorage, slotIndex);
     327           0 :     if (!cachedVal.isUndefined()) {
     328           0 :       args.rval().set(cachedVal);
     329             :       // The cached value is in the compartment of slotStorage,
     330             :       // so wrap into the caller compartment as needed.
     331           0 :       return MaybeWrapNonDOMObjectValue(cx, args.rval());
     332             :     }
     333             :   }
     334             : 
     335           0 :   nsTArray<double> result;
     336           0 :   self->GetAxes(result);
     337           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
     338             :   {
     339           0 :     JS::Rooted<JSObject*> conversionScope(cx, isXray ? obj : slotStorage);
     340           0 :     JSAutoCompartment ac(cx, conversionScope);
     341             :     do { // block we break out of when done wrapping
     342             : 
     343           0 :       uint32_t length = result.Length();
     344           0 :       JS::Rooted<JSObject*> returnArray(cx, JS_NewArrayObject(cx, length));
     345           0 :       if (!returnArray) {
     346           0 :         return false;
     347             :       }
     348             :       // Scope for 'tmp'
     349             :       {
     350           0 :         JS::Rooted<JS::Value> tmp(cx);
     351           0 :         for (uint32_t sequenceIdx0 = 0; sequenceIdx0 < length; ++sequenceIdx0) {
     352             :           // Control block to let us common up the JS_DefineElement calls when there
     353             :           // are different ways to succeed at wrapping the object.
     354             :           do {
     355           0 :             tmp.set(JS_NumberValue(double(result[sequenceIdx0])));
     356           0 :             break;
     357             :           } while (0);
     358           0 :           if (!JS_DefineElement(cx, returnArray, sequenceIdx0, tmp,
     359             :                                 JSPROP_ENUMERATE)) {
     360           0 :             return false;
     361             :           }
     362             :         }
     363             :       }
     364           0 :       args.rval().setObject(*returnArray);
     365           0 :       break;
     366             :     } while (0);
     367           0 :     JS::Rooted<JSObject*> rvalObj(cx, &args.rval().toObject());
     368           0 :     if (!JS_FreezeObject(cx, rvalObj)) {
     369           0 :       return false;
     370             :     }
     371             :   }
     372             :   { // And now store things in the compartment of our slotStorage.
     373           0 :     JSAutoCompartment ac(cx, slotStorage);
     374             :     // Make a copy so that we don't do unnecessary wrapping on args.rval().
     375           0 :     JS::Rooted<JS::Value> storedVal(cx, args.rval());
     376           0 :     if (!MaybeWrapNonDOMObjectValue(cx, &storedVal)) {
     377           0 :       return false;
     378             :     }
     379           0 :     js::SetReservedSlot(slotStorage, slotIndex, storedVal);
     380           0 :     if (!isXray) {
     381             :       // In the Xray case we don't need to do this, because getting the
     382             :       // expando object already preserved our wrapper.
     383           0 :       PreserveWrapper(self);
     384             :     }
     385             :   }
     386             :   // And now make sure args.rval() is in the caller compartment
     387           0 :   return MaybeWrapNonDOMObjectValue(cx, args.rval());
     388             : }
     389             : 
     390             : static const JSJitInfo axes_getterinfo = {
     391             :   { (JSJitGetterOp)get_axes },
     392             :   { prototypes::id::Gamepad },
     393             :   { PrototypeTraits<prototypes::id::Gamepad>::Depth },
     394             :   JSJitInfo::Getter,
     395             :   JSJitInfo::AliasDOMSets, /* aliasSet.  Not relevant for setters. */
     396             :   JSVAL_TYPE_OBJECT,  /* returnType.  Not relevant for setters. */
     397             :   false,  /* isInfallible. False in setters. */
     398             :   true,  /* isMovable.  Not relevant for setters. */
     399             :   true, /* isEliminatable.  Not relevant for setters. */
     400             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
     401             :   true, /* isLazilyCachedInSlot.  Only relevant for getters. */
     402             :   false,  /* isTypedMethod.  Only relevant for methods. */
     403             :   (DOM_INSTANCE_RESERVED_SLOTS + 1)   /* Reserved slot index, if we're stored in a slot, else 0. */
     404             : };
     405             : static_assert((DOM_INSTANCE_RESERVED_SLOTS + 1) <= JSJitInfo::maxSlotIndex, "We won't fit");
     406             : static_assert((DOM_INSTANCE_RESERVED_SLOTS + 1) < 4, "There is no slot for us");
     407             : 
     408             : static bool
     409           0 : get_timestamp(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::Gamepad* self, JSJitGetterCallArgs args)
     410             : {
     411           0 :   double result(self->Timestamp());
     412           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
     413           0 :   args.rval().set(JS_NumberValue(double(result)));
     414           0 :   return true;
     415             : }
     416             : 
     417             : static const JSJitInfo timestamp_getterinfo = {
     418             :   { (JSJitGetterOp)get_timestamp },
     419             :   { prototypes::id::Gamepad },
     420             :   { PrototypeTraits<prototypes::id::Gamepad>::Depth },
     421             :   JSJitInfo::Getter,
     422             :   JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
     423             :   JSVAL_TYPE_DOUBLE,  /* returnType.  Not relevant for setters. */
     424             :   true,  /* isInfallible. False in setters. */
     425             :   false,  /* isMovable.  Not relevant for setters. */
     426             :   false, /* isEliminatable.  Not relevant for setters. */
     427             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
     428             :   false, /* isLazilyCachedInSlot.  Only relevant for getters. */
     429             :   false,  /* isTypedMethod.  Only relevant for methods. */
     430             :   0   /* Reserved slot index, if we're stored in a slot, else 0. */
     431             : };
     432             : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
     433             : static_assert(0 < 4, "There is no slot for us");
     434             : 
     435             : static bool
     436           0 : get_pose(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::Gamepad* self, JSJitGetterCallArgs args)
     437             : {
     438           0 :   auto result(StrongOrRawPtr<mozilla::dom::GamepadPose>(self->GetPose()));
     439           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
     440           0 :   if (!result) {
     441           0 :     args.rval().setNull();
     442           0 :     return true;
     443             :   }
     444           0 :   if (!GetOrCreateDOMReflector(cx, result, args.rval())) {
     445           0 :     MOZ_ASSERT(true || JS_IsExceptionPending(cx));
     446           0 :     return false;
     447             :   }
     448           0 :   return true;
     449             : }
     450             : 
     451             : static const JSJitInfo pose_getterinfo = {
     452             :   { (JSJitGetterOp)get_pose },
     453             :   { prototypes::id::Gamepad },
     454             :   { PrototypeTraits<prototypes::id::Gamepad>::Depth },
     455             :   JSJitInfo::Getter,
     456             :   JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
     457             :   JSVAL_TYPE_UNKNOWN,  /* returnType.  Not relevant for setters. */
     458             :   false,  /* isInfallible. False in setters. */
     459             :   false,  /* isMovable.  Not relevant for setters. */
     460             :   false, /* isEliminatable.  Not relevant for setters. */
     461             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
     462             :   false, /* isLazilyCachedInSlot.  Only relevant for getters. */
     463             :   false,  /* isTypedMethod.  Only relevant for methods. */
     464             :   0   /* Reserved slot index, if we're stored in a slot, else 0. */
     465             : };
     466             : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
     467             : static_assert(0 < 4, "There is no slot for us");
     468             : 
     469             : static bool
     470           0 : get_hapticActuators(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::Gamepad* self, JSJitGetterCallArgs args)
     471             : {
     472             :   // Have to either root across the getter call or reget after.
     473             :   bool isXray;
     474           0 :   JS::Rooted<JSObject*> slotStorage(cx, GetCachedSlotStorageObject(cx, obj, &isXray));
     475           0 :   if (!slotStorage) {
     476           0 :     return false;
     477             :   }
     478           0 :   const size_t slotIndex = isXray ? (xpc::JSSLOT_EXPANDO_COUNT + 2) : (DOM_INSTANCE_RESERVED_SLOTS + 2);
     479           0 :   MOZ_ASSERT(JSCLASS_RESERVED_SLOTS(js::GetObjectClass(slotStorage)) > slotIndex);
     480             :   {
     481             :     // Scope for cachedVal
     482           0 :     JS::Value cachedVal = js::GetReservedSlot(slotStorage, slotIndex);
     483           0 :     if (!cachedVal.isUndefined()) {
     484           0 :       args.rval().set(cachedVal);
     485             :       // The cached value is in the compartment of slotStorage,
     486             :       // so wrap into the caller compartment as needed.
     487           0 :       return MaybeWrapNonDOMObjectValue(cx, args.rval());
     488             :     }
     489             :   }
     490             : 
     491           0 :   nsTArray<StrongPtrForMember<mozilla::dom::GamepadHapticActuator>::Type> result;
     492           0 :   self->GetHapticActuators(result);
     493           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
     494             :   {
     495           0 :     JS::Rooted<JSObject*> conversionScope(cx, isXray ? obj : slotStorage);
     496           0 :     JSAutoCompartment ac(cx, conversionScope);
     497             :     do { // block we break out of when done wrapping
     498             : 
     499           0 :       uint32_t length = result.Length();
     500           0 :       JS::Rooted<JSObject*> returnArray(cx, JS_NewArrayObject(cx, length));
     501           0 :       if (!returnArray) {
     502           0 :         return false;
     503             :       }
     504             :       // Scope for 'tmp'
     505             :       {
     506           0 :         JS::Rooted<JS::Value> tmp(cx);
     507           0 :         for (uint32_t sequenceIdx0 = 0; sequenceIdx0 < length; ++sequenceIdx0) {
     508             :           // Control block to let us common up the JS_DefineElement calls when there
     509             :           // are different ways to succeed at wrapping the object.
     510             :           do {
     511           0 :             if (!GetOrCreateDOMReflector(cx, result[sequenceIdx0], &tmp)) {
     512           0 :               MOZ_ASSERT(true || JS_IsExceptionPending(cx));
     513           0 :               return false;
     514             :             }
     515           0 :             break;
     516             :           } while (0);
     517           0 :           if (!JS_DefineElement(cx, returnArray, sequenceIdx0, tmp,
     518             :                                 JSPROP_ENUMERATE)) {
     519           0 :             return false;
     520             :           }
     521             :         }
     522             :       }
     523           0 :       args.rval().setObject(*returnArray);
     524           0 :       break;
     525             :     } while (0);
     526           0 :     JS::Rooted<JSObject*> rvalObj(cx, &args.rval().toObject());
     527           0 :     if (!JS_FreezeObject(cx, rvalObj)) {
     528           0 :       return false;
     529             :     }
     530             :   }
     531             :   { // And now store things in the compartment of our slotStorage.
     532           0 :     JSAutoCompartment ac(cx, slotStorage);
     533             :     // Make a copy so that we don't do unnecessary wrapping on args.rval().
     534           0 :     JS::Rooted<JS::Value> storedVal(cx, args.rval());
     535           0 :     if (!MaybeWrapNonDOMObjectValue(cx, &storedVal)) {
     536           0 :       return false;
     537             :     }
     538           0 :     js::SetReservedSlot(slotStorage, slotIndex, storedVal);
     539           0 :     if (!isXray) {
     540             :       // In the Xray case we don't need to do this, because getting the
     541             :       // expando object already preserved our wrapper.
     542           0 :       PreserveWrapper(self);
     543             :     }
     544             :   }
     545             :   // And now make sure args.rval() is in the caller compartment
     546           0 :   return MaybeWrapNonDOMObjectValue(cx, args.rval());
     547             : }
     548             : 
     549             : static const JSJitInfo hapticActuators_getterinfo = {
     550             :   { (JSJitGetterOp)get_hapticActuators },
     551             :   { prototypes::id::Gamepad },
     552             :   { PrototypeTraits<prototypes::id::Gamepad>::Depth },
     553             :   JSJitInfo::Getter,
     554             :   JSJitInfo::AliasNone, /* aliasSet.  Not relevant for setters. */
     555             :   JSVAL_TYPE_OBJECT,  /* returnType.  Not relevant for setters. */
     556             :   false,  /* isInfallible. False in setters. */
     557             :   true,  /* isMovable.  Not relevant for setters. */
     558             :   true, /* isEliminatable.  Not relevant for setters. */
     559             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
     560             :   true, /* isLazilyCachedInSlot.  Only relevant for getters. */
     561             :   false,  /* isTypedMethod.  Only relevant for methods. */
     562             :   (DOM_INSTANCE_RESERVED_SLOTS + 2)   /* Reserved slot index, if we're stored in a slot, else 0. */
     563             : };
     564             : static_assert((DOM_INSTANCE_RESERVED_SLOTS + 2) <= JSJitInfo::maxSlotIndex, "We won't fit");
     565             : static_assert((DOM_INSTANCE_RESERVED_SLOTS + 2) < 4, "There is no slot for us");
     566             : 
     567             : static bool
     568           0 : _addProperty(JSContext* cx, JS::Handle<JSObject*> obj, JS::Handle<jsid> id, JS::Handle<JS::Value> val)
     569             : {
     570           0 :   mozilla::dom::Gamepad* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::Gamepad>(obj);
     571             :   // We don't want to preserve if we don't have a wrapper, and we
     572             :   // obviously can't preserve if we're not initialized.
     573           0 :   if (self && self->GetWrapperPreserveColor()) {
     574           0 :     PreserveWrapper(self);
     575             :   }
     576           0 :   return true;
     577             : }
     578             : 
     579             : static void
     580           0 : _finalize(js::FreeOp* fop, JSObject* obj)
     581             : {
     582           0 :   mozilla::dom::Gamepad* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::Gamepad>(obj);
     583           0 :   if (self) {
     584           0 :     ClearWrapper(self, self, obj);
     585           0 :     AddForDeferredFinalization<mozilla::dom::Gamepad>(self);
     586             :   }
     587           0 : }
     588             : 
     589             : static void
     590           0 : _objectMoved(JSObject* obj, const JSObject* old)
     591             : {
     592           0 :   mozilla::dom::Gamepad* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::Gamepad>(obj);
     593           0 :   if (self) {
     594           0 :     UpdateWrapper(self, self, obj, old);
     595             :   }
     596           0 : }
     597             : 
     598             : // We deliberately use brace-elision to make Visual Studio produce better initalization code.
     599             : #if defined(__clang__)
     600             : #pragma clang diagnostic push
     601             : #pragma clang diagnostic ignored "-Wmissing-braces"
     602             : #endif
     603             : static const JSPropertySpec sAttributes_specs[] = {
     604             :   { "id", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &id_getterinfo, nullptr, nullptr },
     605             :   { "index", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &index_getterinfo, nullptr, nullptr },
     606             :   { "mapping", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &mapping_getterinfo, nullptr, nullptr },
     607             :   { nullptr, 0, nullptr, nullptr, nullptr, nullptr },
     608             :   { "hand", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &hand_getterinfo, nullptr, nullptr },
     609             :   { nullptr, 0, nullptr, nullptr, nullptr, nullptr },
     610             :   { "connected", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &connected_getterinfo, nullptr, nullptr },
     611             :   { "buttons", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &buttons_getterinfo, nullptr, nullptr },
     612             :   { "axes", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &axes_getterinfo, nullptr, nullptr },
     613             :   { "timestamp", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &timestamp_getterinfo, nullptr, nullptr },
     614             :   { nullptr, 0, nullptr, nullptr, nullptr, nullptr },
     615             :   { "pose", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &pose_getterinfo, nullptr, nullptr },
     616             :   { "hapticActuators", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &hapticActuators_getterinfo, nullptr, nullptr },
     617             :   { nullptr, 0, nullptr, nullptr, nullptr, nullptr }
     618             : };
     619             : #if defined(__clang__)
     620             : #pragma clang diagnostic pop
     621             : #endif
     622             : 
     623             : static PrefableDisablers sAttributes_disablers4 = {
     624             :   true, false, 0, nullptr
     625             : };
     626             : 
     627             : static PrefableDisablers sAttributes_disablers11 = {
     628             :   true, false, 0, nullptr
     629             : };
     630             : 
     631             : // Can't be const because the pref-enabled boolean needs to be writable
     632             : static Prefable<const JSPropertySpec> sAttributes[] = {
     633             :   { nullptr, &sAttributes_specs[0] },
     634             :   { &sAttributes_disablers4, &sAttributes_specs[4] },
     635             :   { nullptr, &sAttributes_specs[6] },
     636             :   { &sAttributes_disablers11, &sAttributes_specs[11] },
     637             :   { nullptr, nullptr }
     638             : };
     639             : 
     640             : static_assert(4 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
     641             :     "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
     642             : static_assert(4 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
     643             :     "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");
     644             : 
     645             : 
     646             : static uint16_t sNativeProperties_sortedPropertyIndices[10];
     647             : static PropertyInfo sNativeProperties_propertyInfos[10];
     648             : 
     649             : static const NativePropertiesN<1> sNativeProperties = {
     650             :   false, 0,
     651             :   false, 0,
     652             :   false, 0,
     653             :   true,  0 /* sAttributes */,
     654             :   false, 0,
     655             :   false, 0,
     656             :   false, 0,
     657             :   -1,
     658             :   10,
     659             :   sNativeProperties_sortedPropertyIndices,
     660             :   {
     661             :     { sAttributes, &sNativeProperties_propertyInfos[0] }
     662             :   }
     663             : };
     664             : static_assert(10 < 1ull << CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount),
     665             :     "We have a property info count that is oversized");
     666             : 
     667             : static const DOMIfaceAndProtoJSClass sInterfaceObjectClass = {
     668             :   {
     669             :     "Function",
     670             :     JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_SLOTS_BASE),
     671             :     &sBoringInterfaceObjectClassClassOps,
     672             :     JS_NULL_CLASS_SPEC,
     673             :     JS_NULL_CLASS_EXT,
     674             :     &sInterfaceObjectClassObjectOps
     675             :   },
     676             :   eInterface,
     677             :   true,
     678             :   prototypes::id::Gamepad,
     679             :   PrototypeTraits<prototypes::id::Gamepad>::Depth,
     680             :   sNativePropertyHooks,
     681             :   "function Gamepad() {\n    [native code]\n}",
     682             :   JS::GetRealmFunctionPrototype
     683             : };
     684             : 
     685             : static const DOMIfaceAndProtoJSClass sPrototypeClass = {
     686             :   {
     687             :     "GamepadPrototype",
     688             :     JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE),
     689             :     JS_NULL_CLASS_OPS,
     690             :     JS_NULL_CLASS_SPEC,
     691             :     JS_NULL_CLASS_EXT,
     692             :     JS_NULL_OBJECT_OPS
     693             :   },
     694             :   eInterfacePrototype,
     695             :   false,
     696             :   prototypes::id::Gamepad,
     697             :   PrototypeTraits<prototypes::id::Gamepad>::Depth,
     698             :   sNativePropertyHooks,
     699             :   "[object GamepadPrototype]",
     700             :   JS::GetRealmObjectPrototype
     701             : };
     702             : 
     703             : bool
     704           0 : ConstructorEnabled(JSContext* aCx, JS::Handle<JSObject*> aObj)
     705             : {
     706             :   static bool sPrefValue;
     707             :   static bool sPrefCacheSetUp = false;
     708           0 :   if (!sPrefCacheSetUp) {
     709           0 :     sPrefCacheSetUp = true;
     710           0 :     Preferences::AddBoolVarCache(&sPrefValue, "dom.gamepad.enabled");
     711             :   }
     712             : 
     713           0 :   return sPrefValue;
     714             : }
     715             : 
     716             : JSObject*
     717           0 : DefineDOMInterface(JSContext* aCx, JS::Handle<JSObject*> aGlobal, JS::Handle<jsid> id, bool aDefineOnGlobal)
     718             : {
     719           0 :   return GetConstructorObjectHandle(aCx, aDefineOnGlobal);
     720             : }
     721             : 
     722             : static const js::ClassOps sClassOps = {
     723             :   _addProperty, /* addProperty */
     724             :   nullptr,               /* delProperty */
     725             :   nullptr,               /* getProperty */
     726             :   nullptr,               /* setProperty */
     727             :   nullptr,               /* enumerate */
     728             :   nullptr, /* newEnumerate */
     729             :   nullptr, /* resolve */
     730             :   nullptr, /* mayResolve */
     731             :   _finalize, /* finalize */
     732             :   nullptr, /* call */
     733             :   nullptr,               /* hasInstance */
     734             :   nullptr,               /* construct */
     735             :   nullptr, /* trace */
     736             : };
     737             : 
     738             : static const js::ClassExtension sClassExtension = {
     739             :   nullptr, /* weakmapKeyDelegateOp */
     740             :   _objectMoved /* objectMovedOp */
     741             : };
     742             : 
     743             : static const DOMJSClass sClass = {
     744             :   { "Gamepad",
     745             :     JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(4),
     746             :     &sClassOps,
     747             :     JS_NULL_CLASS_SPEC,
     748             :     &sClassExtension,
     749             :     JS_NULL_OBJECT_OPS
     750             :   },
     751             :   { prototypes::id::Gamepad, 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 },
     752             :   IsBaseOf<nsISupports, mozilla::dom::Gamepad >::value,
     753             :   sNativePropertyHooks,
     754             :   FindAssociatedGlobalForNative<mozilla::dom::Gamepad>::Get,
     755             :   GetProtoObjectHandle,
     756             :   GetCCParticipant<mozilla::dom::Gamepad>::Get()
     757             : };
     758             : static_assert(1 == DOM_INSTANCE_RESERVED_SLOTS,
     759             :               "Must have the right minimal number of reserved slots.");
     760             : static_assert(4 >= 4,
     761             :               "Must have enough reserved slots.");
     762             : 
     763             : const JSClass*
     764           0 : GetJSClass()
     765             : {
     766           0 :   return sClass.ToJSClass();
     767             : }
     768             : 
     769             : bool
     770           0 : Wrap(JSContext* aCx, mozilla::dom::Gamepad* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
     771             : {
     772             :   MOZ_ASSERT(static_cast<mozilla::dom::Gamepad*>(aObject) ==
     773             :              reinterpret_cast<mozilla::dom::Gamepad*>(aObject),
     774             :              "Multiple inheritance for mozilla::dom::Gamepad is broken.");
     775           0 :   MOZ_ASSERT(ToSupportsIsCorrect(aObject));
     776           0 :   MOZ_ASSERT_IF(aGivenProto, js::IsObjectInContextCompartment(aGivenProto, aCx));
     777           0 :   MOZ_ASSERT(!aCache->GetWrapper(),
     778             :              "You should probably not be using Wrap() directly; use "
     779             :              "GetOrCreateDOMReflector instead");
     780             : 
     781           0 :   MOZ_ASSERT(ToSupportsIsOnPrimaryInheritanceChain(aObject, aCache),
     782             :              "nsISupports must be on our primary inheritance chain");
     783             : 
     784           0 :   JS::Rooted<JSObject*> global(aCx, FindAssociatedGlobal(aCx, aObject->GetParentObject()));
     785           0 :   if (!global) {
     786           0 :     return false;
     787             :   }
     788           0 :   MOZ_ASSERT(JS_IsGlobalObject(global));
     789           0 :   MOZ_ASSERT(JS::ObjectIsNotGray(global));
     790             : 
     791             :   // That might have ended up wrapping us already, due to the wonders
     792             :   // of XBL.  Check for that, and bail out as needed.
     793           0 :   aReflector.set(aCache->GetWrapper());
     794           0 :   if (aReflector) {
     795             : #ifdef DEBUG
     796           0 :     binding_detail::AssertReflectorHasGivenProto(aCx, aReflector, aGivenProto);
     797             : #endif // DEBUG
     798           0 :     return true;
     799             :   }
     800             : 
     801           0 :   JSAutoCompartment ac(aCx, global);
     802           0 :   JS::Handle<JSObject*> canonicalProto = GetProtoObjectHandle(aCx);
     803           0 :   if (!canonicalProto) {
     804           0 :     return false;
     805             :   }
     806           0 :   JS::Rooted<JSObject*> proto(aCx);
     807           0 :   if (aGivenProto) {
     808           0 :     proto = aGivenProto;
     809             :     // Unfortunately, while aGivenProto was in the compartment of aCx
     810             :     // coming in, we changed compartments to that of "parent" so may need
     811             :     // to wrap the proto here.
     812           0 :     if (js::GetContextCompartment(aCx) != js::GetObjectCompartment(proto)) {
     813           0 :       if (!JS_WrapObject(aCx, &proto)) {
     814           0 :         return false;
     815             :       }
     816             :     }
     817             :   } else {
     818           0 :     proto = canonicalProto;
     819             :   }
     820             : 
     821           0 :   BindingJSObjectCreator<mozilla::dom::Gamepad> creator(aCx);
     822           0 :   creator.CreateObject(aCx, sClass.ToJSClass(), proto, aObject, aReflector);
     823           0 :   if (!aReflector) {
     824           0 :     return false;
     825             :   }
     826             : 
     827           0 :   aCache->SetWrapper(aReflector);
     828           0 :   creator.InitializationSucceeded();
     829             : 
     830           0 :   MOZ_ASSERT(aCache->GetWrapperPreserveColor() &&
     831             :              aCache->GetWrapperPreserveColor() == aReflector);
     832             :   // If proto != canonicalProto, we have to preserve our wrapper;
     833             :   // otherwise we won't be able to properly recreate it later, since
     834             :   // we won't know what proto to use.  Note that we don't check
     835             :   // aGivenProto here, since it's entirely possible (and even
     836             :   // somewhat common) to have a non-null aGivenProto which is the
     837             :   // same as canonicalProto.
     838           0 :   if (proto != canonicalProto) {
     839           0 :     PreserveWrapper(aObject);
     840             :   }
     841             : 
     842           0 :   return true;
     843             : }
     844             : 
     845             : // This may allocate too many slots, because we only really need
     846             : // slots for our non-interface-typed members that we cache.  But
     847             : // allocating slots only for those would make the slot index
     848             : // computations much more complicated, so let's do this the simple
     849             : // way for now.
     850             : DEFINE_XRAY_EXPANDO_CLASS(static, sXrayExpandoObjectClass, 3);
     851             : 
     852             : const NativePropertyHooks sNativePropertyHooks[] = { {
     853             :   nullptr,
     854             :   nullptr,
     855             :   nullptr,
     856             :   { sNativeProperties.Upcast(), nullptr },
     857             :   prototypes::id::Gamepad,
     858             :   constructors::id::Gamepad,
     859             :   nullptr,
     860             :   &sXrayExpandoObjectClass
     861             : } };
     862             : 
     863             : void
     864           0 : ClearCachedButtonsValue(mozilla::dom::Gamepad* aObject)
     865             : {
     866             :   JSObject* obj;
     867           0 :   obj = aObject->GetWrapper();
     868           0 :   if (!obj) {
     869           0 :     return;
     870             :   }
     871           0 :   js::SetReservedSlot(obj, (DOM_INSTANCE_RESERVED_SLOTS + 0), JS::UndefinedValue());
     872           0 :   xpc::ClearXrayExpandoSlots(obj, (xpc::JSSLOT_EXPANDO_COUNT + 0));
     873             : }
     874             : 
     875             : void
     876           0 : ClearCachedAxesValue(mozilla::dom::Gamepad* aObject)
     877             : {
     878             :   JSObject* obj;
     879           0 :   obj = aObject->GetWrapper();
     880           0 :   if (!obj) {
     881           0 :     return;
     882             :   }
     883           0 :   js::SetReservedSlot(obj, (DOM_INSTANCE_RESERVED_SLOTS + 1), JS::UndefinedValue());
     884           0 :   xpc::ClearXrayExpandoSlots(obj, (xpc::JSSLOT_EXPANDO_COUNT + 1));
     885             : }
     886             : 
     887             : void
     888           0 : CreateInterfaceObjects(JSContext* aCx, JS::Handle<JSObject*> aGlobal, ProtoAndIfaceCache& aProtoAndIfaceCache, bool aDefineOnGlobal)
     889             : {
     890           0 :   JS::Rooted<JSObject*> parentProto(aCx, JS::GetRealmObjectPrototype(aCx));
     891           0 :   if (!parentProto) {
     892           0 :     return;
     893             :   }
     894             : 
     895           0 :   JS::Rooted<JSObject*> constructorProto(aCx, JS::GetRealmFunctionPrototype(aCx));
     896           0 :   if (!constructorProto) {
     897           0 :     return;
     898             :   }
     899             : 
     900             :   static bool sIdsInited = false;
     901           0 :   if (!sIdsInited && NS_IsMainThread()) {
     902           0 :     if (!InitIds(aCx, sNativeProperties.Upcast())) {
     903           0 :       return;
     904             :     }
     905           0 :     sIdsInited = true;
     906             :   }
     907             : 
     908             :   static bool sPrefCachesInited = false;
     909           0 :   if (!sPrefCachesInited && NS_IsMainThread()) {
     910           0 :     sPrefCachesInited = true;
     911           0 :     Preferences::AddBoolVarCache(&sAttributes[1].disablers->enabled, "dom.gamepad.extensions.enabled");
     912           0 :     Preferences::AddBoolVarCache(&sAttributes[3].disablers->enabled, "dom.gamepad.extensions.enabled");
     913             :   }
     914             : 
     915           0 :   JS::Heap<JSObject*>* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::Gamepad);
     916           0 :   JS::Heap<JSObject*>* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::Gamepad);
     917           0 :   dom::CreateInterfaceObjects(aCx, aGlobal, parentProto,
     918             :                               &sPrototypeClass.mBase, protoCache,
     919             :                               constructorProto, &sInterfaceObjectClass.mBase, 0, nullptr,
     920             :                               interfaceCache,
     921             :                               sNativeProperties.Upcast(),
     922             :                               nullptr,
     923             :                               "Gamepad", aDefineOnGlobal,
     924             :                               nullptr,
     925           0 :                               false);
     926             : }
     927             : 
     928             : JS::Handle<JSObject*>
     929           0 : GetProtoObjectHandle(JSContext* aCx)
     930             : {
     931             :   /* Get the interface prototype object for this class.  This will create the
     932             :      object as needed. */
     933           0 :   bool aDefineOnGlobal = true;
     934             : 
     935             :   /* Make sure our global is sane.  Hopefully we can remove this sometime */
     936           0 :   JSObject* global = JS::CurrentGlobalOrNull(aCx);
     937           0 :   if (!(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL)) {
     938           0 :     return nullptr;
     939             :   }
     940             : 
     941             :   /* Check to see whether the interface objects are already installed */
     942           0 :   ProtoAndIfaceCache& protoAndIfaceCache = *GetProtoAndIfaceCache(global);
     943           0 :   if (!protoAndIfaceCache.HasEntryInSlot(prototypes::id::Gamepad)) {
     944           0 :     JS::Rooted<JSObject*> rootedGlobal(aCx, global);
     945           0 :     CreateInterfaceObjects(aCx, rootedGlobal, protoAndIfaceCache, aDefineOnGlobal);
     946             :   }
     947             : 
     948             :   /*
     949             :    * The object might _still_ be null, but that's OK.
     950             :    *
     951             :    * Calling fromMarkedLocation() is safe because protoAndIfaceCache is
     952             :    * traced by TraceProtoAndIfaceCache() and its contents are never
     953             :    * changed after they have been set.
     954             :    *
     955             :    * Calling address() avoids the read read barrier that does gray
     956             :    * unmarking, but it's not possible for the object to be gray here.
     957             :    */
     958             : 
     959           0 :   const JS::Heap<JSObject*>& entrySlot = protoAndIfaceCache.EntrySlotMustExist(prototypes::id::Gamepad);
     960           0 :   MOZ_ASSERT(JS::ObjectIsNotGray(entrySlot));
     961           0 :   return JS::Handle<JSObject*>::fromMarkedLocation(entrySlot.address());
     962             : }
     963             : 
     964             : JS::Handle<JSObject*>
     965           0 : GetConstructorObjectHandle(JSContext* aCx, bool aDefineOnGlobal)
     966             : {
     967             :   /* Get the interface object for this class.  This will create the object as
     968             :      needed. */
     969             : 
     970             :   /* Make sure our global is sane.  Hopefully we can remove this sometime */
     971           0 :   JSObject* global = JS::CurrentGlobalOrNull(aCx);
     972           0 :   if (!(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL)) {
     973           0 :     return nullptr;
     974             :   }
     975             : 
     976             :   /* Check to see whether the interface objects are already installed */
     977           0 :   ProtoAndIfaceCache& protoAndIfaceCache = *GetProtoAndIfaceCache(global);
     978           0 :   if (!protoAndIfaceCache.HasEntryInSlot(constructors::id::Gamepad)) {
     979           0 :     JS::Rooted<JSObject*> rootedGlobal(aCx, global);
     980           0 :     CreateInterfaceObjects(aCx, rootedGlobal, protoAndIfaceCache, aDefineOnGlobal);
     981             :   }
     982             : 
     983             :   /*
     984             :    * The object might _still_ be null, but that's OK.
     985             :    *
     986             :    * Calling fromMarkedLocation() is safe because protoAndIfaceCache is
     987             :    * traced by TraceProtoAndIfaceCache() and its contents are never
     988             :    * changed after they have been set.
     989             :    *
     990             :    * Calling address() avoids the read read barrier that does gray
     991             :    * unmarking, but it's not possible for the object to be gray here.
     992             :    */
     993             : 
     994           0 :   const JS::Heap<JSObject*>& entrySlot = protoAndIfaceCache.EntrySlotMustExist(constructors::id::Gamepad);
     995           0 :   MOZ_ASSERT(JS::ObjectIsNotGray(entrySlot));
     996           0 :   return JS::Handle<JSObject*>::fromMarkedLocation(entrySlot.address());
     997             : }
     998             : 
     999             : JSObject*
    1000           0 : GetConstructorObject(JSContext* aCx)
    1001             : {
    1002           0 :   return GetConstructorObjectHandle(aCx);
    1003             : }
    1004             : 
    1005             : } // namespace GamepadBinding
    1006             : 
    1007             : 
    1008             : 
    1009             : namespace GamepadButtonBinding {
    1010             : 
    1011             : static bool
    1012           0 : get_pressed(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::GamepadButton* self, JSJitGetterCallArgs args)
    1013             : {
    1014           0 :   bool result(self->Pressed());
    1015           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
    1016           0 :   args.rval().setBoolean(result);
    1017           0 :   return true;
    1018             : }
    1019             : 
    1020             : static const JSJitInfo pressed_getterinfo = {
    1021             :   { (JSJitGetterOp)get_pressed },
    1022             :   { prototypes::id::GamepadButton },
    1023             :   { PrototypeTraits<prototypes::id::GamepadButton>::Depth },
    1024             :   JSJitInfo::Getter,
    1025             :   JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
    1026             :   JSVAL_TYPE_BOOLEAN,  /* returnType.  Not relevant for setters. */
    1027             :   true,  /* isInfallible. False in setters. */
    1028             :   false,  /* isMovable.  Not relevant for setters. */
    1029             :   false, /* isEliminatable.  Not relevant for setters. */
    1030             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
    1031             :   false, /* isLazilyCachedInSlot.  Only relevant for getters. */
    1032             :   false,  /* isTypedMethod.  Only relevant for methods. */
    1033             :   0   /* Reserved slot index, if we're stored in a slot, else 0. */
    1034             : };
    1035             : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
    1036             : static_assert(0 < 1, "There is no slot for us");
    1037             : 
    1038             : static bool
    1039           0 : get_touched(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::GamepadButton* self, JSJitGetterCallArgs args)
    1040             : {
    1041           0 :   bool result(self->Touched());
    1042           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
    1043           0 :   args.rval().setBoolean(result);
    1044           0 :   return true;
    1045             : }
    1046             : 
    1047             : static const JSJitInfo touched_getterinfo = {
    1048             :   { (JSJitGetterOp)get_touched },
    1049             :   { prototypes::id::GamepadButton },
    1050             :   { PrototypeTraits<prototypes::id::GamepadButton>::Depth },
    1051             :   JSJitInfo::Getter,
    1052             :   JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
    1053             :   JSVAL_TYPE_BOOLEAN,  /* returnType.  Not relevant for setters. */
    1054             :   true,  /* isInfallible. False in setters. */
    1055             :   false,  /* isMovable.  Not relevant for setters. */
    1056             :   false, /* isEliminatable.  Not relevant for setters. */
    1057             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
    1058             :   false, /* isLazilyCachedInSlot.  Only relevant for getters. */
    1059             :   false,  /* isTypedMethod.  Only relevant for methods. */
    1060             :   0   /* Reserved slot index, if we're stored in a slot, else 0. */
    1061             : };
    1062             : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
    1063             : static_assert(0 < 1, "There is no slot for us");
    1064             : 
    1065             : static bool
    1066           0 : get_value(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::GamepadButton* self, JSJitGetterCallArgs args)
    1067             : {
    1068           0 :   double result(self->Value());
    1069           0 :   MOZ_ASSERT(!JS_IsExceptionPending(cx));
    1070           0 :   args.rval().set(JS_NumberValue(double(result)));
    1071           0 :   return true;
    1072             : }
    1073             : 
    1074             : static const JSJitInfo value_getterinfo = {
    1075             :   { (JSJitGetterOp)get_value },
    1076             :   { prototypes::id::GamepadButton },
    1077             :   { PrototypeTraits<prototypes::id::GamepadButton>::Depth },
    1078             :   JSJitInfo::Getter,
    1079             :   JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
    1080             :   JSVAL_TYPE_DOUBLE,  /* returnType.  Not relevant for setters. */
    1081             :   true,  /* isInfallible. False in setters. */
    1082             :   false,  /* isMovable.  Not relevant for setters. */
    1083             :   false, /* isEliminatable.  Not relevant for setters. */
    1084             :   false, /* isAlwaysInSlot.  Only relevant for getters. */
    1085             :   false, /* isLazilyCachedInSlot.  Only relevant for getters. */
    1086             :   false,  /* isTypedMethod.  Only relevant for methods. */
    1087             :   0   /* Reserved slot index, if we're stored in a slot, else 0. */
    1088             : };
    1089             : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
    1090             : static_assert(0 < 1, "There is no slot for us");
    1091             : 
    1092             : static bool
    1093           0 : _addProperty(JSContext* cx, JS::Handle<JSObject*> obj, JS::Handle<jsid> id, JS::Handle<JS::Value> val)
    1094             : {
    1095           0 :   mozilla::dom::GamepadButton* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::GamepadButton>(obj);
    1096             :   // We don't want to preserve if we don't have a wrapper, and we
    1097             :   // obviously can't preserve if we're not initialized.
    1098           0 :   if (self && self->GetWrapperPreserveColor()) {
    1099           0 :     PreserveWrapper(self);
    1100             :   }
    1101           0 :   return true;
    1102             : }
    1103             : 
    1104             : static void
    1105           0 : _finalize(js::FreeOp* fop, JSObject* obj)
    1106             : {
    1107           0 :   mozilla::dom::GamepadButton* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::GamepadButton>(obj);
    1108           0 :   if (self) {
    1109           0 :     ClearWrapper(self, self, obj);
    1110           0 :     AddForDeferredFinalization<mozilla::dom::GamepadButton>(self);
    1111             :   }
    1112           0 : }
    1113             : 
    1114             : static void
    1115           0 : _objectMoved(JSObject* obj, const JSObject* old)
    1116             : {
    1117           0 :   mozilla::dom::GamepadButton* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::GamepadButton>(obj);
    1118           0 :   if (self) {
    1119           0 :     UpdateWrapper(self, self, obj, old);
    1120             :   }
    1121           0 : }
    1122             : 
    1123             : // We deliberately use brace-elision to make Visual Studio produce better initalization code.
    1124             : #if defined(__clang__)
    1125             : #pragma clang diagnostic push
    1126             : #pragma clang diagnostic ignored "-Wmissing-braces"
    1127             : #endif
    1128             : static const JSPropertySpec sAttributes_specs[] = {
    1129             :   { "pressed", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &pressed_getterinfo, nullptr, nullptr },
    1130             :   { "touched", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &touched_getterinfo, nullptr, nullptr },
    1131             :   { "value", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &value_getterinfo, nullptr, nullptr },
    1132             :   { nullptr, 0, nullptr, nullptr, nullptr, nullptr }
    1133             : };
    1134             : #if defined(__clang__)
    1135             : #pragma clang diagnostic pop
    1136             : #endif
    1137             : 
    1138             : 
    1139             : // Can't be const because the pref-enabled boolean needs to be writable
    1140             : static Prefable<const JSPropertySpec> sAttributes[] = {
    1141             :   { nullptr, &sAttributes_specs[0] },
    1142             :   { nullptr, nullptr }
    1143             : };
    1144             : 
    1145             : static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
    1146             :     "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
    1147             : static_assert(3 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
    1148             :     "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");
    1149             : 
    1150             : 
    1151             : static uint16_t sNativeProperties_sortedPropertyIndices[3];
    1152             : static PropertyInfo sNativeProperties_propertyInfos[3];
    1153             : 
    1154             : static const NativePropertiesN<1> sNativeProperties = {
    1155             :   false, 0,
    1156             :   false, 0,
    1157             :   false, 0,
    1158             :   true,  0 /* sAttributes */,
    1159             :   false, 0,
    1160             :   false, 0,
    1161             :   false, 0,
    1162             :   -1,
    1163             :   3,
    1164             :   sNativeProperties_sortedPropertyIndices,
    1165             :   {
    1166             :     { sAttributes, &sNativeProperties_propertyInfos[0] }
    1167             :   }
    1168             : };
    1169             : static_assert(3 < 1ull << CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount),
    1170             :     "We have a property info count that is oversized");
    1171             : 
    1172             : static const DOMIfaceAndProtoJSClass sInterfaceObjectClass = {
    1173             :   {
    1174             :     "Function",
    1175             :     JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_SLOTS_BASE),
    1176             :     &sBoringInterfaceObjectClassClassOps,
    1177             :     JS_NULL_CLASS_SPEC,
    1178             :     JS_NULL_CLASS_EXT,
    1179             :     &sInterfaceObjectClassObjectOps
    1180             :   },
    1181             :   eInterface,
    1182             :   true,
    1183             :   prototypes::id::GamepadButton,
    1184             :   PrototypeTraits<prototypes::id::GamepadButton>::Depth,
    1185             :   sNativePropertyHooks,
    1186             :   "function GamepadButton() {\n    [native code]\n}",
    1187             :   JS::GetRealmFunctionPrototype
    1188             : };
    1189             : 
    1190             : static const DOMIfaceAndProtoJSClass sPrototypeClass = {
    1191             :   {
    1192             :     "GamepadButtonPrototype",
    1193             :     JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE),
    1194             :     JS_NULL_CLASS_OPS,
    1195             :     JS_NULL_CLASS_SPEC,
    1196             :     JS_NULL_CLASS_EXT,
    1197             :     JS_NULL_OBJECT_OPS
    1198             :   },
    1199             :   eInterfacePrototype,
    1200             :   false,
    1201             :   prototypes::id::GamepadButton,
    1202             :   PrototypeTraits<prototypes::id::GamepadButton>::Depth,
    1203             :   sNativePropertyHooks,
    1204             :   "[object GamepadButtonPrototype]",
    1205             :   JS::GetRealmObjectPrototype
    1206             : };
    1207             : 
    1208             : bool
    1209           0 : ConstructorEnabled(JSContext* aCx, JS::Handle<JSObject*> aObj)
    1210             : {
    1211             :   static bool sPrefValue;
    1212             :   static bool sPrefCacheSetUp = false;
    1213           0 :   if (!sPrefCacheSetUp) {
    1214           0 :     sPrefCacheSetUp = true;
    1215           0 :     Preferences::AddBoolVarCache(&sPrefValue, "dom.gamepad.enabled");
    1216             :   }
    1217             : 
    1218           0 :   return sPrefValue;
    1219             : }
    1220             : 
    1221             : JSObject*
    1222           0 : DefineDOMInterface(JSContext* aCx, JS::Handle<JSObject*> aGlobal, JS::Handle<jsid> id, bool aDefineOnGlobal)
    1223             : {
    1224           0 :   return GetConstructorObjectHandle(aCx, aDefineOnGlobal);
    1225             : }
    1226             : 
    1227             : static const js::ClassOps sClassOps = {
    1228             :   _addProperty, /* addProperty */
    1229             :   nullptr,               /* delProperty */
    1230             :   nullptr,               /* getProperty */
    1231             :   nullptr,               /* setProperty */
    1232             :   nullptr,               /* enumerate */
    1233             :   nullptr, /* newEnumerate */
    1234             :   nullptr, /* resolve */
    1235             :   nullptr, /* mayResolve */
    1236             :   _finalize, /* finalize */
    1237             :   nullptr, /* call */
    1238             :   nullptr,               /* hasInstance */
    1239             :   nullptr,               /* construct */
    1240             :   nullptr, /* trace */
    1241             : };
    1242             : 
    1243             : static const js::ClassExtension sClassExtension = {
    1244             :   nullptr, /* weakmapKeyDelegateOp */
    1245             :   _objectMoved /* objectMovedOp */
    1246             : };
    1247             : 
    1248             : static const DOMJSClass sClass = {
    1249             :   { "GamepadButton",
    1250             :     JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(1),
    1251             :     &sClassOps,
    1252             :     JS_NULL_CLASS_SPEC,
    1253             :     &sClassExtension,
    1254             :     JS_NULL_OBJECT_OPS
    1255             :   },
    1256             :   { prototypes::id::GamepadButton, 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 },
    1257             :   IsBaseOf<nsISupports, mozilla::dom::GamepadButton >::value,
    1258             :   sNativePropertyHooks,
    1259             :   FindAssociatedGlobalForNative<mozilla::dom::GamepadButton>::Get,
    1260             :   GetProtoObjectHandle,
    1261             :   GetCCParticipant<mozilla::dom::GamepadButton>::Get()
    1262             : };
    1263             : static_assert(1 == DOM_INSTANCE_RESERVED_SLOTS,
    1264             :               "Must have the right minimal number of reserved slots.");
    1265             : static_assert(1 >= 1,
    1266             :               "Must have enough reserved slots.");
    1267             : 
    1268             : const JSClass*
    1269           0 : GetJSClass()
    1270             : {
    1271           0 :   return sClass.ToJSClass();
    1272             : }
    1273             : 
    1274             : bool
    1275           0 : Wrap(JSContext* aCx, mozilla::dom::GamepadButton* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
    1276             : {
    1277             :   MOZ_ASSERT(static_cast<mozilla::dom::GamepadButton*>(aObject) ==
    1278             :              reinterpret_cast<mozilla::dom::GamepadButton*>(aObject),
    1279             :              "Multiple inheritance for mozilla::dom::GamepadButton is broken.");
    1280           0 :   MOZ_ASSERT(ToSupportsIsCorrect(aObject));
    1281           0 :   MOZ_ASSERT_IF(aGivenProto, js::IsObjectInContextCompartment(aGivenProto, aCx));
    1282           0 :   MOZ_ASSERT(!aCache->GetWrapper(),
    1283             :              "You should probably not be using Wrap() directly; use "
    1284             :              "GetOrCreateDOMReflector instead");
    1285             : 
    1286           0 :   MOZ_ASSERT(ToSupportsIsOnPrimaryInheritanceChain(aObject, aCache),
    1287             :              "nsISupports must be on our primary inheritance chain");
    1288             : 
    1289           0 :   JS::Rooted<JSObject*> global(aCx, FindAssociatedGlobal(aCx, aObject->GetParentObject()));
    1290           0 :   if (!global) {
    1291           0 :     return false;
    1292             :   }
    1293           0 :   MOZ_ASSERT(JS_IsGlobalObject(global));
    1294           0 :   MOZ_ASSERT(JS::ObjectIsNotGray(global));
    1295             : 
    1296             :   // That might have ended up wrapping us already, due to the wonders
    1297             :   // of XBL.  Check for that, and bail out as needed.
    1298           0 :   aReflector.set(aCache->GetWrapper());
    1299           0 :   if (aReflector) {
    1300             : #ifdef DEBUG
    1301           0 :     binding_detail::AssertReflectorHasGivenProto(aCx, aReflector, aGivenProto);
    1302             : #endif // DEBUG
    1303           0 :     return true;
    1304             :   }
    1305             : 
    1306           0 :   JSAutoCompartment ac(aCx, global);
    1307           0 :   JS::Handle<JSObject*> canonicalProto = GetProtoObjectHandle(aCx);
    1308           0 :   if (!canonicalProto) {
    1309           0 :     return false;
    1310             :   }
    1311           0 :   JS::Rooted<JSObject*> proto(aCx);
    1312           0 :   if (aGivenProto) {
    1313           0 :     proto = aGivenProto;
    1314             :     // Unfortunately, while aGivenProto was in the compartment of aCx
    1315             :     // coming in, we changed compartments to that of "parent" so may need
    1316             :     // to wrap the proto here.
    1317           0 :     if (js::GetContextCompartment(aCx) != js::GetObjectCompartment(proto)) {
    1318           0 :       if (!JS_WrapObject(aCx, &proto)) {
    1319           0 :         return false;
    1320             :       }
    1321             :     }
    1322             :   } else {
    1323           0 :     proto = canonicalProto;
    1324             :   }
    1325             : 
    1326           0 :   BindingJSObjectCreator<mozilla::dom::GamepadButton> creator(aCx);
    1327           0 :   creator.CreateObject(aCx, sClass.ToJSClass(), proto, aObject, aReflector);
    1328           0 :   if (!aReflector) {
    1329           0 :     return false;
    1330             :   }
    1331             : 
    1332           0 :   aCache->SetWrapper(aReflector);
    1333           0 :   creator.InitializationSucceeded();
    1334             : 
    1335           0 :   MOZ_ASSERT(aCache->GetWrapperPreserveColor() &&
    1336             :              aCache->GetWrapperPreserveColor() == aReflector);
    1337             :   // If proto != canonicalProto, we have to preserve our wrapper;
    1338             :   // otherwise we won't be able to properly recreate it later, since
    1339             :   // we won't know what proto to use.  Note that we don't check
    1340             :   // aGivenProto here, since it's entirely possible (and even
    1341             :   // somewhat common) to have a non-null aGivenProto which is the
    1342             :   // same as canonicalProto.
    1343           0 :   if (proto != canonicalProto) {
    1344           0 :     PreserveWrapper(aObject);
    1345             :   }
    1346             : 
    1347           0 :   return true;
    1348             : }
    1349             : 
    1350             : const NativePropertyHooks sNativePropertyHooks[] = { {
    1351             :   nullptr,
    1352             :   nullptr,
    1353             :   nullptr,
    1354             :   { sNativeProperties.Upcast(), nullptr },
    1355             :   prototypes::id::GamepadButton,
    1356             :   constructors::id::GamepadButton,
    1357             :   nullptr,
    1358             :   &DefaultXrayExpandoObjectClass
    1359             : } };
    1360             : 
    1361             : void
    1362           0 : CreateInterfaceObjects(JSContext* aCx, JS::Handle<JSObject*> aGlobal, ProtoAndIfaceCache& aProtoAndIfaceCache, bool aDefineOnGlobal)
    1363             : {
    1364           0 :   JS::Rooted<JSObject*> parentProto(aCx, JS::GetRealmObjectPrototype(aCx));
    1365           0 :   if (!parentProto) {
    1366           0 :     return;
    1367             :   }
    1368             : 
    1369           0 :   JS::Rooted<JSObject*> constructorProto(aCx, JS::GetRealmFunctionPrototype(aCx));
    1370           0 :   if (!constructorProto) {
    1371           0 :     return;
    1372             :   }
    1373             : 
    1374             :   static bool sIdsInited = false;
    1375           0 :   if (!sIdsInited && NS_IsMainThread()) {
    1376           0 :     if (!InitIds(aCx, sNativeProperties.Upcast())) {
    1377           0 :       return;
    1378             :     }
    1379           0 :     sIdsInited = true;
    1380             :   }
    1381             : 
    1382           0 :   JS::Heap<JSObject*>* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::GamepadButton);
    1383           0 :   JS::Heap<JSObject*>* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::GamepadButton);
    1384           0 :   dom::CreateInterfaceObjects(aCx, aGlobal, parentProto,
    1385             :                               &sPrototypeClass.mBase, protoCache,
    1386             :                               constructorProto, &sInterfaceObjectClass.mBase, 0, nullptr,
    1387             :                               interfaceCache,
    1388             :                               sNativeProperties.Upcast(),
    1389             :                               nullptr,
    1390             :                               "GamepadButton", aDefineOnGlobal,
    1391             :                               nullptr,
    1392           0 :                               false);
    1393             : }
    1394             : 
    1395             : JS::Handle<JSObject*>
    1396           0 : GetProtoObjectHandle(JSContext* aCx)
    1397             : {
    1398             :   /* Get the interface prototype object for this class.  This will create the
    1399             :      object as needed. */
    1400           0 :   bool aDefineOnGlobal = true;
    1401             : 
    1402             :   /* Make sure our global is sane.  Hopefully we can remove this sometime */
    1403           0 :   JSObject* global = JS::CurrentGlobalOrNull(aCx);
    1404           0 :   if (!(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL)) {
    1405           0 :     return nullptr;
    1406             :   }
    1407             : 
    1408             :   /* Check to see whether the interface objects are already installed */
    1409           0 :   ProtoAndIfaceCache& protoAndIfaceCache = *GetProtoAndIfaceCache(global);
    1410           0 :   if (!protoAndIfaceCache.HasEntryInSlot(prototypes::id::GamepadButton)) {
    1411           0 :     JS::Rooted<JSObject*> rootedGlobal(aCx, global);
    1412           0 :     CreateInterfaceObjects(aCx, rootedGlobal, protoAndIfaceCache, aDefineOnGlobal);
    1413             :   }
    1414             : 
    1415             :   /*
    1416             :    * The object might _still_ be null, but that's OK.
    1417             :    *
    1418             :    * Calling fromMarkedLocation() is safe because protoAndIfaceCache is
    1419             :    * traced by TraceProtoAndIfaceCache() and its contents are never
    1420             :    * changed after they have been set.
    1421             :    *
    1422             :    * Calling address() avoids the read read barrier that does gray
    1423             :    * unmarking, but it's not possible for the object to be gray here.
    1424             :    */
    1425             : 
    1426           0 :   const JS::Heap<JSObject*>& entrySlot = protoAndIfaceCache.EntrySlotMustExist(prototypes::id::GamepadButton);
    1427           0 :   MOZ_ASSERT(JS::ObjectIsNotGray(entrySlot));
    1428           0 :   return JS::Handle<JSObject*>::fromMarkedLocation(entrySlot.address());
    1429             : }
    1430             : 
    1431             : JS::Handle<JSObject*>
    1432           0 : GetConstructorObjectHandle(JSContext* aCx, bool aDefineOnGlobal)
    1433             : {
    1434             :   /* Get the interface object for this class.  This will create the object as
    1435             :      needed. */
    1436             : 
    1437             :   /* Make sure our global is sane.  Hopefully we can remove this sometime */
    1438           0 :   JSObject* global = JS::CurrentGlobalOrNull(aCx);
    1439           0 :   if (!(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL)) {
    1440           0 :     return nullptr;
    1441             :   }
    1442             : 
    1443             :   /* Check to see whether the interface objects are already installed */
    1444           0 :   ProtoAndIfaceCache& protoAndIfaceCache = *GetProtoAndIfaceCache(global);
    1445           0 :   if (!protoAndIfaceCache.HasEntryInSlot(constructors::id::GamepadButton)) {
    1446           0 :     JS::Rooted<JSObject*> rootedGlobal(aCx, global);
    1447           0 :     CreateInterfaceObjects(aCx, rootedGlobal, protoAndIfaceCache, aDefineOnGlobal);
    1448             :   }
    1449             : 
    1450             :   /*
    1451             :    * The object might _still_ be null, but that's OK.
    1452             :    *
    1453             :    * Calling fromMarkedLocation() is safe because protoAndIfaceCache is
    1454             :    * traced by TraceProtoAndIfaceCache() and its contents are never
    1455             :    * changed after they have been set.
    1456             :    *
    1457             :    * Calling address() avoids the read read barrier that does gray
    1458             :    * unmarking, but it's not possible for the object to be gray here.
    1459             :    */
    1460             : 
    1461           0 :   const JS::Heap<JSObject*>& entrySlot = protoAndIfaceCache.EntrySlotMustExist(constructors::id::GamepadButton);
    1462           0 :   MOZ_ASSERT(JS::ObjectIsNotGray(entrySlot));
    1463           0 :   return JS::Handle<JSObject*>::fromMarkedLocation(entrySlot.address());
    1464             : }
    1465             : 
    1466             : JSObject*
    1467           0 : GetConstructorObject(JSContext* aCx)
    1468             : {
    1469           0 :   return GetConstructorObjectHandle(aCx);
    1470             : }
    1471             : 
    1472             : } // namespace GamepadButtonBinding
    1473             : 
    1474             : 
    1475             : 
    1476             : } // namespace dom
    1477             : } // namespace mozilla

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