/work/obj-fuzz/dom/bindings/DragEventBinding.cpp

Source (jump to first uncovered line)
/* THIS FILE IS AUTOGENERATED FROM DragEvent.webidl BY Codegen.py - DO NOT EDIT */

#include "AtomList.h"
#include "DragEventBinding.h"
#include "MouseEventBinding.h"
#include "WrapperFactory.h"
#include "mozilla/OwningNonNull.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/DOMJSClass.h"
#include "mozilla/dom/DataTransfer.h"
#include "mozilla/dom/DragEvent.h"
#include "mozilla/dom/EventTarget.h"
#include "mozilla/dom/NonRefcountedDOMObject.h"
#include "mozilla/dom/Nullable.h"
#include "mozilla/dom/PrimitiveConversions.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/dom/XrayExpandoClass.h"
#include "nsGlobalWindow.h"

namespace mozilla {
namespace dom {

namespace binding_detail {}; // Just to make sure it's known as a namespace
using namespace mozilla::dom::binding_detail;



DragEventInit::DragEventInit()
  : MouseEventInit(FastDictionaryInitializer())
{
  // Safe to pass a null context if we pass a null value
  Init(nullptr, JS::NullHandleValue);
}



bool
DragEventInit::InitIds(JSContext* cx, DragEventInitAtoms* atomsCache)
{
  MOZ_ASSERT(!*reinterpret_cast<jsid**>(atomsCache));

  // Initialize these in reverse order so that any failure leaves the first one
  // uninitialized.
  if (!atomsCache->dataTransfer_id.init(cx, "dataTransfer")) {
    return false;
  }
  return true;
}

bool
DragEventInit::Init(JSContext* cx, JS::Handle<JS::Value> val, const char* sourceDescription, bool passedToJSImpl)
{
  // Passing a null JSContext is OK only if we're initing from null,
  // Since in that case we will not have to do any property gets
  // Also evaluate isNullOrUndefined in order to avoid false-positive
  // checkers by static analysis tools
  MOZ_ASSERT_IF(!cx, val.isNull() && val.isNullOrUndefined());
  DragEventInitAtoms* atomsCache = nullptr;
  if (cx) {
    atomsCache = GetAtomCache<DragEventInitAtoms>(cx);
    if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {
      return false;
    }
  }

  // Per spec, we init the parent's members first
  if (!MouseEventInit::Init(cx, val)) {
    return false;
  }

  bool isNull = val.isNullOrUndefined();
  // We only need these if !isNull, in which case we have |cx|.
  Maybe<JS::Rooted<JSObject *> > object;
  Maybe<JS::Rooted<JS::Value> > temp;
  if (!isNull) {
    MOZ_ASSERT(cx);
    object.emplace(cx, &val.toObject());
    temp.emplace(cx);
  }
  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->dataTransfer_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    if (temp.ref().isObject()) {
      static_assert(IsRefcounted<mozilla::dom::DataTransfer>::value, "We can only store refcounted classes.");{
        nsresult rv = UnwrapObject<prototypes::id::DataTransfer, mozilla::dom::DataTransfer>(temp.ptr(), mDataTransfer);
        if (NS_FAILED(rv)) {
          ThrowErrorMessage(cx, MSG_DOES_NOT_IMPLEMENT_INTERFACE, "'dataTransfer' member of DragEventInit", "DataTransfer");
          return false;
        }
      }
    } else if (temp.ref().isNullOrUndefined()) {
      mDataTransfer = nullptr;
    } else {
      ThrowErrorMessage(cx, MSG_NOT_OBJECT, "'dataTransfer' member of DragEventInit");
      return false;
    }
  } else {
    mDataTransfer = nullptr;
  }
  mIsAnyMemberPresent = true;
  return true;
}

bool
DragEventInit::ToObjectInternal(JSContext* cx, JS::MutableHandle<JS::Value> rval) const
{
  DragEventInitAtoms* atomsCache = GetAtomCache<DragEventInitAtoms>(cx);
  if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {
    return false;
  }

  // Per spec, we define the parent's members first
  if (!MouseEventInit::ToObjectInternal(cx, rval)) {
    return false;
  }
  JS::Rooted<JSObject*> obj(cx, &rval.toObject());

  do {
    // block for our 'break' successCode and scope for 'temp' and 'currentValue'
    JS::Rooted<JS::Value> temp(cx);
    RefPtr<mozilla::dom::DataTransfer> const & currentValue = mDataTransfer;
    if (!currentValue) {
      temp.setNull();
      if (!JS_DefinePropertyById(cx, obj, atomsCache->dataTransfer_id, temp, JSPROP_ENUMERATE)) {
        return false;
      }
      break;
    }
    if (!GetOrCreateDOMReflector(cx, currentValue, &temp)) {
      MOZ_ASSERT(JS_IsExceptionPending(cx));
      return false;
    }
    if (!JS_DefinePropertyById(cx, obj, atomsCache->dataTransfer_id, temp, JSPROP_ENUMERATE)) {
      return false;
    }
    break;
  } while(false);

  return true;
}

void
DragEventInit::TraceDictionary(JSTracer* trc)
{
  MouseEventInit::TraceDictionary(trc);
}



DragEventInit&
DragEventInit::operator=(const DragEventInit& aOther)
{
  MouseEventInit::operator=(aOther);
  mDataTransfer = aOther.mDataTransfer;
  return *this;
}

namespace binding_detail {
} // namespace binding_detail


namespace DragEvent_Binding {

static_assert(IsRefcounted<NativeType>::value == IsRefcounted<MouseEvent_Binding::NativeType>::value,
              "Can't inherit from an interface with a different ownership model.");

MOZ_CAN_RUN_SCRIPT static bool
get_dataTransfer(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::DragEvent* self, JSJitGetterCallArgs args)
{
  AUTO_PROFILER_LABEL_FAST("get DragEvent.dataTransfer", DOM, cx);

  auto result(StrongOrRawPtr<mozilla::dom::DataTransfer>(self->GetDataTransfer()));
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!result) {
    args.rval().setNull();
    return true;
  }
  if (!GetOrCreateDOMReflector(cx, result, args.rval())) {
    MOZ_ASSERT(JS_IsExceptionPending(cx));
    return false;
  }
  return true;
}

static const JSJitInfo dataTransfer_getterinfo = {
  { (JSJitGetterOp)get_dataTransfer },
  { prototypes::id::DragEvent },
  { PrototypeTraits<prototypes::id::DragEvent>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_UNKNOWN,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};
static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
static_assert(0 < 1, "There is no slot for us");

MOZ_CAN_RUN_SCRIPT static bool
initDragEvent(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::DragEvent* self, const JSJitMethodCallArgs& args)
{
  AUTO_PROFILER_LABEL_FAST("DragEvent.initDragEvent", DOM, cx);

  if (MOZ_UNLIKELY(args.length() < 1)) {
    return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "DragEvent.initDragEvent");
  }
  binding_detail::FakeString arg0;
  if (!ConvertJSValueToString(cx, args[0], eStringify, eStringify, arg0)) {
    return false;
  }
  bool arg1;
  if (args.hasDefined(1)) {
    if (!ValueToPrimitive<bool, eDefault>(cx, args[1], &arg1)) {
      return false;
    }
  } else {
    arg1 = false;
  }
  bool arg2;
  if (args.hasDefined(2)) {
    if (!ValueToPrimitive<bool, eDefault>(cx, args[2], &arg2)) {
      return false;
    }
  } else {
    arg2 = false;
  }
  nsGlobalWindowInner* arg3;
  if (args.hasDefined(3)) {
    if (args[3].isObject()) {
      {
        nsresult rv = UnwrapObject<prototypes::id::Window, nsGlobalWindowInner>(args[3], arg3);
        if (NS_FAILED(rv)) {
          ThrowErrorMessage(cx, MSG_DOES_NOT_IMPLEMENT_INTERFACE, "Argument 4 of DragEvent.initDragEvent", "Window");
          return false;
        }
      }
    } else if (args[3].isNullOrUndefined()) {
      arg3 = nullptr;
    } else {
      ThrowErrorMessage(cx, MSG_NOT_OBJECT, "Argument 4 of DragEvent.initDragEvent");
      return false;
    }
  } else {
    arg3 = nullptr;
  }
  int32_t arg4;
  if (args.hasDefined(4)) {
    if (!ValueToPrimitive<int32_t, eDefault>(cx, args[4], &arg4)) {
      return false;
    }
  } else {
    arg4 = 0;
  }
  int32_t arg5;
  if (args.hasDefined(5)) {
    if (!ValueToPrimitive<int32_t, eDefault>(cx, args[5], &arg5)) {
      return false;
    }
  } else {
    arg5 = 0;
  }
  int32_t arg6;
  if (args.hasDefined(6)) {
    if (!ValueToPrimitive<int32_t, eDefault>(cx, args[6], &arg6)) {
      return false;
    }
  } else {
    arg6 = 0;
  }
  int32_t arg7;
  if (args.hasDefined(7)) {
    if (!ValueToPrimitive<int32_t, eDefault>(cx, args[7], &arg7)) {
      return false;
    }
  } else {
    arg7 = 0;
  }
  int32_t arg8;
  if (args.hasDefined(8)) {
    if (!ValueToPrimitive<int32_t, eDefault>(cx, args[8], &arg8)) {
      return false;
    }
  } else {
    arg8 = 0;
  }
  bool arg9;
  if (args.hasDefined(9)) {
    if (!ValueToPrimitive<bool, eDefault>(cx, args[9], &arg9)) {
      return false;
    }
  } else {
    arg9 = false;
  }
  bool arg10;
  if (args.hasDefined(10)) {
    if (!ValueToPrimitive<bool, eDefault>(cx, args[10], &arg10)) {
      return false;
    }
  } else {
    arg10 = false;
  }
  bool arg11;
  if (args.hasDefined(11)) {
    if (!ValueToPrimitive<bool, eDefault>(cx, args[11], &arg11)) {
      return false;
    }
  } else {
    arg11 = false;
  }
  bool arg12;
  if (args.hasDefined(12)) {
    if (!ValueToPrimitive<bool, eDefault>(cx, args[12], &arg12)) {
      return false;
    }
  } else {
    arg12 = false;
  }
  uint16_t arg13;
  if (args.hasDefined(13)) {
    if (!ValueToPrimitive<uint16_t, eDefault>(cx, args[13], &arg13)) {
      return false;
    }
  } else {
    arg13 = 0;
  }
  mozilla::dom::EventTarget* arg14;
  if (args.hasDefined(14)) {
    if (args[14].isObject()) {
      {
        nsresult rv = UnwrapObject<prototypes::id::EventTarget, mozilla::dom::EventTarget>(args[14], arg14);
        if (NS_FAILED(rv)) {
          ThrowErrorMessage(cx, MSG_DOES_NOT_IMPLEMENT_INTERFACE, "Argument 15 of DragEvent.initDragEvent", "EventTarget");
          return false;
        }
      }
    } else if (args[14].isNullOrUndefined()) {
      arg14 = nullptr;
    } else {
      ThrowErrorMessage(cx, MSG_NOT_OBJECT, "Argument 15 of DragEvent.initDragEvent");
      return false;
    }
  } else {
    arg14 = nullptr;
  }
  mozilla::dom::DataTransfer* arg15;
  if (args.hasDefined(15)) {
    if (args[15].isObject()) {
      {
        nsresult rv = UnwrapObject<prototypes::id::DataTransfer, mozilla::dom::DataTransfer>(args[15], arg15);
        if (NS_FAILED(rv)) {
          ThrowErrorMessage(cx, MSG_DOES_NOT_IMPLEMENT_INTERFACE, "Argument 16 of DragEvent.initDragEvent", "DataTransfer");
          return false;
        }
      }
    } else if (args[15].isNullOrUndefined()) {
      arg15 = nullptr;
    } else {
      ThrowErrorMessage(cx, MSG_NOT_OBJECT, "Argument 16 of DragEvent.initDragEvent");
      return false;
    }
  } else {
    arg15 = nullptr;
  }
  self->InitDragEvent(NonNullHelper(Constify(arg0)), arg1, arg2, MOZ_KnownLive(Constify(arg3)), arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11, arg12, arg13, MOZ_KnownLive(Constify(arg14)), MOZ_KnownLive(Constify(arg15)));
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().setUndefined();
  return true;
}

static const JSJitInfo initDragEvent_methodinfo = {
  { (JSJitGetterOp)initDragEvent },
  { prototypes::id::DragEvent },
  { PrototypeTraits<prototypes::id::DragEvent>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_UNDEFINED,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};
static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
static_assert(0 < 1, "There is no slot for us");

MOZ_CAN_RUN_SCRIPT static bool
get_isTrusted(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::DragEvent* self, JSJitGetterCallArgs args)
{
  AUTO_PROFILER_LABEL_FAST("get DragEvent.isTrusted", DOM, cx);

  bool result(self->IsTrusted());
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().setBoolean(result);
  return true;
}

static const JSJitInfo isTrusted_getterinfo = {
  { (JSJitGetterOp)get_isTrusted },
  { prototypes::id::DragEvent },
  { PrototypeTraits<prototypes::id::DragEvent>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasDOMSets, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_BOOLEAN,  /* returnType.  Not relevant for setters. */
  true,  /* isInfallible. False in setters. */
  true,  /* isMovable.  Not relevant for setters. */
  true, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};
static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
static_assert(0 < 1, "There is no slot for us");

static bool
_addProperty(JSContext* cx, JS::Handle<JSObject*> obj, JS::Handle<jsid> id, JS::Handle<JS::Value> val)
{
  mozilla::dom::DragEvent* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::DragEvent>(obj);
  // We don't want to preserve if we don't have a wrapper, and we
  // obviously can't preserve if we're not initialized.
  if (self && self->GetWrapperPreserveColor()) {
    PreserveWrapper(self);
  }
  return true;
}

static void
_finalize(js::FreeOp* fop, JSObject* obj)
{
  mozilla::dom::DragEvent* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::DragEvent>(obj);
  if (self) {
    ClearWrapper(self, self, obj);
    AddForDeferredFinalization<mozilla::dom::DragEvent>(self);
  }
}

static size_t
_objectMoved(JSObject* obj, JSObject* old)
{
  mozilla::dom::DragEvent* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::DragEvent>(obj);
  if (self) {
    UpdateWrapper(self, self, obj, old);
  }

  return 0;
}

// We deliberately use brace-elision to make Visual Studio produce better initalization code.
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wmissing-braces"
#endif
static const JSFunctionSpec sMethods_specs[] = {
  JS_FNSPEC("initDragEvent", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&initDragEvent_methodinfo), 1, JSPROP_ENUMERATE, nullptr),
  JS_FS_END
};
#if defined(__clang__)
#pragma clang diagnostic pop
#endif


static const Prefable<const JSFunctionSpec> sMethods[] = {
  { nullptr, &sMethods_specs[0] },
  { nullptr, nullptr }
};

static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
    "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
    "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");

// We deliberately use brace-elision to make Visual Studio produce better initalization code.
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wmissing-braces"
#endif
static const JSPropertySpec sAttributes_specs[] = {
  { "dataTransfer", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &dataTransfer_getterinfo, nullptr, nullptr },
  { nullptr, 0, nullptr, nullptr, nullptr, nullptr }
};
#if defined(__clang__)
#pragma clang diagnostic pop
#endif


static const Prefable<const JSPropertySpec> sAttributes[] = {
  { nullptr, &sAttributes_specs[0] },
  { nullptr, nullptr }
};

static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
    "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
    "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");

// We deliberately use brace-elision to make Visual Studio produce better initalization code.
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wmissing-braces"
#endif
static const JSPropertySpec sUnforgeableAttributes_specs[] = {
  { "isTrusted", JSPROP_ENUMERATE | JSPROP_PERMANENT, GenericGetter<NormalThisPolicy, ThrowExceptions>, &isTrusted_getterinfo, nullptr, nullptr },
  { nullptr, 0, nullptr, nullptr, nullptr, nullptr }
};
#if defined(__clang__)
#pragma clang diagnostic pop
#endif


static const Prefable<const JSPropertySpec> sUnforgeableAttributes[] = {
  { nullptr, &sUnforgeableAttributes_specs[0] },
  { nullptr, nullptr }
};

static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
    "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
    "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");


static uint16_t sNativeProperties_sortedPropertyIndices[3];
static PropertyInfo sNativeProperties_propertyInfos[3];

static const NativePropertiesN<3> sNativeProperties = {
  false, 0,
  false, 0,
  true,  0 /* sMethods */,
  true,  1 /* sAttributes */,
  false, 0,
  true,  2 /* sUnforgeableAttributes */,
  false, 0,
  -1,
  3,
  sNativeProperties_sortedPropertyIndices,
  {
    { sMethods, &sNativeProperties_propertyInfos[0] },
    { sAttributes, &sNativeProperties_propertyInfos[1] },
    { sUnforgeableAttributes, &sNativeProperties_propertyInfos[2] }
  }
};
static_assert(3 < 1ull << CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount),
    "We have a property info count that is oversized");

static bool
_constructor(JSContext* cx, unsigned argc, JS::Value* vp)
{
  AUTO_PROFILER_LABEL_FAST("DragEvent constructor", DOM, cx);

  JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
  JS::Rooted<JSObject*> obj(cx, &args.callee());
  if (!args.isConstructing()) {
    // XXXbz wish I could get the name from the callee instead of
    // Adding more relocations
    return ThrowConstructorWithoutNew(cx, "DragEvent");
  }

  JS::Rooted<JSObject*> desiredProto(cx);
  if (!GetDesiredProto(cx, args, &desiredProto)) {
    return false;
  }

  if (MOZ_UNLIKELY(args.length() < 1)) {
    return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "DragEvent");
  }
  GlobalObject global(cx, obj);
  if (global.Failed()) {
    return false;
  }

  bool objIsXray = xpc::WrapperFactory::IsXrayWrapper(obj);
  binding_detail::FakeString arg0;
  if (!ConvertJSValueToString(cx, args[0], eStringify, eStringify, arg0)) {
    return false;
  }
  binding_detail::FastDragEventInit arg1;
  if (!arg1.Init(cx, (args.hasDefined(1)) ? args[1] : JS::NullHandleValue,  "Argument 2 of DragEvent.constructor", false)) {
    return false;
  }
  Maybe<JSAutoRealm> ar;
  if (objIsXray) {
    obj = js::CheckedUnwrap(obj);
    if (!obj) {
      return false;
    }
    ar.emplace(cx, obj);
    if (!JS_WrapObject(cx, &desiredProto)) {
      return false;
    }
  }
  FastErrorResult rv;
  auto result(StrongOrRawPtr<mozilla::dom::DragEvent>(mozilla::dom::DragEvent::Constructor(global, NonNullHelper(Constify(arg0)), Constify(arg1), rv)));
  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
    return false;
  }
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  static_assert(!IsPointer<decltype(result)>::value,
                "NewObject implies that we need to keep the object alive with a strong reference.");
  if (!GetOrCreateDOMReflector(cx, result, args.rval(), desiredProto)) {
    MOZ_ASSERT(JS_IsExceptionPending(cx));
    return false;
  }
  return true;
}

static const js::ClassOps sInterfaceObjectClassOps = {
    nullptr,               /* addProperty */
    nullptr,               /* delProperty */
    nullptr,               /* enumerate */
    nullptr,               /* newEnumerate */
    nullptr,               /* resolve */
    nullptr,               /* mayResolve */
    nullptr,               /* finalize */
    _constructor, /* call */
    nullptr,               /* hasInstance */
    _constructor, /* construct */
    nullptr,               /* trace */
};

static const DOMIfaceAndProtoJSClass sInterfaceObjectClass = {
  {
    "Function",
    JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_SLOTS_BASE),
    &sInterfaceObjectClassOps,
    JS_NULL_CLASS_SPEC,
    JS_NULL_CLASS_EXT,
    &sInterfaceObjectClassObjectOps
  },
  eInterface,
  true,
  prototypes::id::DragEvent,
  PrototypeTraits<prototypes::id::DragEvent>::Depth,
  sNativePropertyHooks,
  "function DragEvent() {\n    [native code]\n}",
  MouseEvent_Binding::GetConstructorObject
};

static const DOMIfaceAndProtoJSClass sPrototypeClass = {
  {
    "DragEventPrototype",
    JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE + 1 /* slot for the JSObject holding the unforgeable properties */),
    JS_NULL_CLASS_OPS,
    JS_NULL_CLASS_SPEC,
    JS_NULL_CLASS_EXT,
    JS_NULL_OBJECT_OPS
  },
  eInterfacePrototype,
  false,
  prototypes::id::DragEvent,
  PrototypeTraits<prototypes::id::DragEvent>::Depth,
  sNativePropertyHooks,
  "[object DragEventPrototype]",
  MouseEvent_Binding::GetProtoObject
};

static const js::ClassOps sClassOps = {
  _addProperty, /* addProperty */
  nullptr,               /* delProperty */
  nullptr,               /* enumerate */
  nullptr, /* newEnumerate */
  nullptr, /* resolve */
  nullptr, /* mayResolve */
  _finalize, /* finalize */
  nullptr, /* call */
  nullptr,               /* hasInstance */
  nullptr,               /* construct */
  nullptr, /* trace */
};

static const js::ClassExtension sClassExtension = {
  nullptr, /* weakmapKeyDelegateOp */
  _objectMoved /* objectMovedOp */
};

static const DOMJSClass sClass = {
  { "DragEvent",
    JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(1) | JSCLASS_SKIP_NURSERY_FINALIZE,
    &sClassOps,
    JS_NULL_CLASS_SPEC,
    &sClassExtension,
    JS_NULL_OBJECT_OPS
  },
  { prototypes::id::Event, prototypes::id::UIEvent, prototypes::id::MouseEvent, prototypes::id::DragEvent, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count },
  IsBaseOf<nsISupports, mozilla::dom::DragEvent >::value,
  sNativePropertyHooks,
  FindAssociatedGlobalForNative<mozilla::dom::DragEvent>::Get,
  GetProtoObjectHandle,
  GetCCParticipant<mozilla::dom::DragEvent>::Get()
};
static_assert(1 == DOM_INSTANCE_RESERVED_SLOTS,
              "Must have the right minimal number of reserved slots.");
static_assert(1 >= 1,
              "Must have enough reserved slots.");

const JSClass*
GetJSClass()
{
  return sClass.ToJSClass();
}

bool
Wrap(JSContext* aCx, mozilla::dom::DragEvent* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
{
  static_assert(!IsBaseOf<NonRefcountedDOMObject, mozilla::dom::DragEvent>::value,
                "Shouldn't have wrappercached things that are not refcounted.");
  MOZ_ASSERT(static_cast<mozilla::dom::DragEvent*>(aObject) ==
             reinterpret_cast<mozilla::dom::DragEvent*>(aObject),
             "Multiple inheritance for mozilla::dom::DragEvent is broken.");
  MOZ_ASSERT(static_cast<mozilla::dom::MouseEvent*>(aObject) ==
             reinterpret_cast<mozilla::dom::MouseEvent*>(aObject),
             "Multiple inheritance for mozilla::dom::MouseEvent is broken.");
  MOZ_ASSERT(static_cast<mozilla::dom::UIEvent*>(aObject) ==
             reinterpret_cast<mozilla::dom::UIEvent*>(aObject),
             "Multiple inheritance for mozilla::dom::UIEvent is broken.");
  MOZ_ASSERT(static_cast<mozilla::dom::Event*>(aObject) ==
             reinterpret_cast<mozilla::dom::Event*>(aObject),
             "Multiple inheritance for mozilla::dom::Event is broken.");
  MOZ_ASSERT(ToSupportsIsCorrect(aObject));
  MOZ_ASSERT_IF(aGivenProto, js::IsObjectInContextCompartment(aGivenProto, aCx));
  MOZ_ASSERT(!aCache->GetWrapper(),
             "You should probably not be using Wrap() directly; use "
             "GetOrCreateDOMReflector instead");

  MOZ_ASSERT(ToSupportsIsOnPrimaryInheritanceChain(aObject, aCache),
             "nsISupports must be on our primary inheritance chain");

  JS::Rooted<JSObject*> global(aCx, FindAssociatedGlobal(aCx, aObject->GetParentObject()));
  if (!global) {
    return false;
  }
  MOZ_ASSERT(JS_IsGlobalObject(global));
  MOZ_ASSERT(JS::ObjectIsNotGray(global));

  // That might have ended up wrapping us already, due to the wonders
  // of XBL.  Check for that, and bail out as needed.
  aReflector.set(aCache->GetWrapper());
  if (aReflector) {
#ifdef DEBUG
    AssertReflectorHasGivenProto(aCx, aReflector, aGivenProto);
#endif // DEBUG
    return true;
  }

  JSAutoRealm ar(aCx, global);
  JS::Handle<JSObject*> canonicalProto = GetProtoObjectHandle(aCx);
  if (!canonicalProto) {
    return false;
  }
  JS::Rooted<JSObject*> proto(aCx);
  if (aGivenProto) {
    proto = aGivenProto;
    // Unfortunately, while aGivenProto was in the compartment of aCx
    // coming in, we changed compartments to that of "parent" so may need
    // to wrap the proto here.
    if (js::GetContextCompartment(aCx) != js::GetObjectCompartment(proto)) {
      if (!JS_WrapObject(aCx, &proto)) {
        return false;
      }
    }
  } else {
    proto = canonicalProto;
  }

  BindingJSObjectCreator<mozilla::dom::DragEvent> creator(aCx);
  creator.CreateObject(aCx, sClass.ToJSClass(), proto, aObject, aReflector);
  if (!aReflector) {
    return false;
  }

  aCache->SetWrapper(aReflector);

  // Important: do unforgeable property setup after we have handed
  // over ownership of the C++ object to obj as needed, so that if
  // we fail and it ends up GCed it won't have problems in the
  // finalizer trying to drop its ownership of the C++ object.
  JS::Rooted<JSObject*> unforgeableHolder(aCx,
    &js::GetReservedSlot(canonicalProto, DOM_INTERFACE_PROTO_SLOTS_BASE).toObject());
  if (!JS_InitializePropertiesFromCompatibleNativeObject(aCx, aReflector, unforgeableHolder)) {
    aCache->ReleaseWrapper(aObject);
    aCache->ClearWrapper();
    return false;
  }
  creator.InitializationSucceeded();

  MOZ_ASSERT(aCache->GetWrapperPreserveColor() &&
             aCache->GetWrapperPreserveColor() == aReflector);
  // If proto != canonicalProto, we have to preserve our wrapper;
  // otherwise we won't be able to properly recreate it later, since
  // we won't know what proto to use.  Note that we don't check
  // aGivenProto here, since it's entirely possible (and even
  // somewhat common) to have a non-null aGivenProto which is the
  // same as canonicalProto.
  if (proto != canonicalProto) {
    PreserveWrapper(aObject);
  }

  return true;
}

const NativePropertyHooks sNativePropertyHooks[] = { {
  nullptr,
  nullptr,
  nullptr,
  { sNativeProperties.Upcast(), nullptr },
  prototypes::id::DragEvent,
  constructors::id::DragEvent,
  MouseEvent_Binding::sNativePropertyHooks,
  &DefaultXrayExpandoObjectClass
} };

void
CreateInterfaceObjects(JSContext* aCx, JS::Handle<JSObject*> aGlobal, ProtoAndIfaceCache& aProtoAndIfaceCache, bool aDefineOnGlobal)
{
  JS::Handle<JSObject*> parentProto(MouseEvent_Binding::GetProtoObjectHandle(aCx));
  if (!parentProto) {
    return;
  }

  JS::Handle<JSObject*> constructorProto(MouseEvent_Binding::GetConstructorObjectHandle(aCx));
  if (!constructorProto) {
    return;
  }

  static bool sIdsInited = false;
  if (!sIdsInited && NS_IsMainThread()) {
    if (!InitIds(aCx, sNativeProperties.Upcast())) {
      return;
    }
    sIdsInited = true;
  }

  JS::Heap<JSObject*>* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::DragEvent);
  JS::Heap<JSObject*>* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::DragEvent);
  dom::CreateInterfaceObjects(aCx, aGlobal, parentProto,
                              &sPrototypeClass.mBase, protoCache,
                              nullptr,
                              constructorProto, &sInterfaceObjectClass.mBase, 1, nullptr,
                              interfaceCache,
                              sNativeProperties.Upcast(),
                              nullptr,
                              "DragEvent", aDefineOnGlobal,
                              nullptr,
                              false);

  JS::Rooted<JSObject*> unforgeableHolder(aCx);
  {
    JS::Rooted<JSObject*> holderProto(aCx, *protoCache);
    unforgeableHolder = JS_NewObjectWithoutMetadata(aCx, sClass.ToJSClass(), holderProto);
    if (!unforgeableHolder) {
      *protoCache = nullptr;
      if (interfaceCache) {
        *interfaceCache = nullptr;
      }
      return;
    }
  }

  if (!DefineUnforgeableAttributes(aCx, unforgeableHolder, sUnforgeableAttributes)) {
    *protoCache = nullptr;
    if (interfaceCache) {
      *interfaceCache = nullptr;
    }
    return;
  }

  if (*protoCache) {
    js::SetReservedSlot(*protoCache, DOM_INTERFACE_PROTO_SLOTS_BASE,
                        JS::ObjectValue(*unforgeableHolder));
  }
}

JSObject*
GetConstructorObject(JSContext* aCx)
{
  return GetConstructorObjectHandle(aCx);
}

} // namespace DragEvent_Binding



} // namespace dom
} // namespace mozilla

Coverage Report

Created: 2018-09-25 14:53