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

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

#include "AtomList.h"
#include "DOMIntersectionObserver.h"
#include "IntersectionObserverBinding.h"
#include "WrapperFactory.h"
#include "XrayWrapper.h"
#include "mozilla/FloatingPoint.h"
#include "mozilla/OwningNonNull.h"
#include "mozilla/Preferences.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/DOMIntersectionObserver.h"
#include "mozilla/dom/DOMJSClass.h"
#include "mozilla/dom/DOMRect.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/NonRefcountedDOMObject.h"
#include "mozilla/dom/Nullable.h"
#include "mozilla/dom/PrimitiveConversions.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/dom/UnionConversions.h"
#include "mozilla/dom/XrayExpandoClass.h"
#include "nsContentUtils.h"

namespace mozilla {
namespace dom {

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


bool
DoubleOrDoubleSequence::ToJSVal(JSContext* cx, JS::Handle<JSObject*> scopeObj, JS::MutableHandle<JS::Value> rval) const
{
  switch (mType) {
    case eUninitialized: {
      return false;
      break;
    }
    case eDouble: {
      rval.set(JS_NumberValue(double(mValue.mDouble.Value())));
      return true;
      break;
    }
    case eDoubleSequence: {

      uint32_t length = mValue.mDoubleSequence.Value().Length();
      JS::Rooted<JSObject*> returnArray(cx, JS_NewArrayObject(cx, length));
      if (!returnArray) {
        return false;
      }
      // Scope for 'tmp'
      {
        JS::Rooted<JS::Value> tmp(cx);
        for (uint32_t sequenceIdx0 = 0; sequenceIdx0 < length; ++sequenceIdx0) {
          // Control block to let us common up the JS_DefineElement calls when there
          // are different ways to succeed at wrapping the object.
          do {
            tmp.set(JS_NumberValue(double(mValue.mDoubleSequence.Value()[sequenceIdx0])));
            break;
          } while (false);
          if (!JS_DefineElement(cx, returnArray, sequenceIdx0, tmp,
                                JSPROP_ENUMERATE)) {
            return false;
          }
        }
      }
      rval.setObject(*returnArray);
      return true;
      break;
    }
    default: {
      return false;
      break;
    }
  }

  return false;
}


double&
OwningDoubleOrDoubleSequence::RawSetAsDouble()
{
  if (mType == eDouble) {
    return mValue.mDouble.Value();
  }
  MOZ_ASSERT(mType == eUninitialized);
  mType = eDouble;
  return mValue.mDouble.SetValue();
}

double&
OwningDoubleOrDoubleSequence::SetAsDouble()
{
  if (mType == eDouble) {
    return mValue.mDouble.Value();
  }
  Uninit();
  mType = eDouble;
  return mValue.mDouble.SetValue();
}

bool
OwningDoubleOrDoubleSequence::TrySetToDouble(JSContext* cx, JS::Handle<JS::Value> value, bool& tryNext, bool passedToJSImpl)
{
  tryNext = false;
  { // scope for memberSlot
    double& memberSlot = RawSetAsDouble();
    if (!ValueToPrimitive<double, eDefault>(cx, value, &memberSlot)) {
      return false;
    } else if (!mozilla::IsFinite(memberSlot)) {
      ThrowErrorMessage(cx, MSG_NOT_FINITE, "Member of DoubleOrDoubleSequence");
      return false;
    }
  }
  return true;
}

void
OwningDoubleOrDoubleSequence::DestroyDouble()
{
  MOZ_ASSERT(IsDouble(), "Wrong type!");
  mValue.mDouble.Destroy();
  mType = eUninitialized;
}




Sequence<double>&
OwningDoubleOrDoubleSequence::RawSetAsDoubleSequence()
{
  if (mType == eDoubleSequence) {
    return mValue.mDoubleSequence.Value();
  }
  MOZ_ASSERT(mType == eUninitialized);
  mType = eDoubleSequence;
  return mValue.mDoubleSequence.SetValue();
}

Sequence<double>&
OwningDoubleOrDoubleSequence::SetAsDoubleSequence()
{
  if (mType == eDoubleSequence) {
    return mValue.mDoubleSequence.Value();
  }
  Uninit();
  mType = eDoubleSequence;
  return mValue.mDoubleSequence.SetValue();
}

bool
OwningDoubleOrDoubleSequence::TrySetToDoubleSequence(JSContext* cx, JS::Handle<JS::Value> value, bool& tryNext, bool passedToJSImpl)
{
  tryNext = false;
  { // scope for memberSlot
    Sequence<double>& memberSlot = RawSetAsDoubleSequence();
    JS::ForOfIterator iter(cx);
    if (!iter.init(value, JS::ForOfIterator::AllowNonIterable)) {
      return false;
    }
    if (!iter.valueIsIterable()) {
      DestroyDoubleSequence();
      tryNext = true;
      return true;
    }
    Sequence<double> &arr = memberSlot;
    JS::Rooted<JS::Value> temp(cx);
    while (true) {
      bool done;
      if (!iter.next(&temp, &done)) {
        return false;
      }
      if (done) {
        break;
      }
      double* slotPtr = arr.AppendElement(mozilla::fallible);
      if (!slotPtr) {
        JS_ReportOutOfMemory(cx);
        return false;
      }
      double& slot = *slotPtr;
      if (!ValueToPrimitive<double, eDefault>(cx, temp, &slot)) {
        return false;
      } else if (!mozilla::IsFinite(slot)) {
        ThrowErrorMessage(cx, MSG_NOT_FINITE, "Element of member of DoubleOrDoubleSequence");
        return false;
      }
    }
  }
  return true;
}

void
OwningDoubleOrDoubleSequence::DestroyDoubleSequence()
{
  MOZ_ASSERT(IsDoubleSequence(), "Wrong type!");
  mValue.mDoubleSequence.Destroy();
  mType = eUninitialized;
}




void
OwningDoubleOrDoubleSequence::Uninit()
{
  switch (mType) {
    case eUninitialized: {
      break;
    }
    case eDouble: {
      DestroyDouble();
      break;
    }
    case eDoubleSequence: {
      DestroyDoubleSequence();
      break;
    }
  }
}

bool
OwningDoubleOrDoubleSequence::ToJSVal(JSContext* cx, JS::Handle<JSObject*> scopeObj, JS::MutableHandle<JS::Value> rval) const
{
  switch (mType) {
    case eUninitialized: {
      return false;
      break;
    }
    case eDouble: {
      rval.set(JS_NumberValue(double(mValue.mDouble.Value())));
      return true;
      break;
    }
    case eDoubleSequence: {

      uint32_t length = mValue.mDoubleSequence.Value().Length();
      JS::Rooted<JSObject*> returnArray(cx, JS_NewArrayObject(cx, length));
      if (!returnArray) {
        return false;
      }
      // Scope for 'tmp'
      {
        JS::Rooted<JS::Value> tmp(cx);
        for (uint32_t sequenceIdx0 = 0; sequenceIdx0 < length; ++sequenceIdx0) {
          // Control block to let us common up the JS_DefineElement calls when there
          // are different ways to succeed at wrapping the object.
          do {
            tmp.set(JS_NumberValue(double(mValue.mDoubleSequence.Value()[sequenceIdx0])));
            break;
          } while (false);
          if (!JS_DefineElement(cx, returnArray, sequenceIdx0, tmp,
                                JSPROP_ENUMERATE)) {
            return false;
          }
        }
      }
      rval.setObject(*returnArray);
      return true;
      break;
    }
    default: {
      return false;
      break;
    }
  }

  return false;
}

void
OwningDoubleOrDoubleSequence::TraceUnion(JSTracer* trc)
{
}

OwningDoubleOrDoubleSequence&
OwningDoubleOrDoubleSequence::operator=(const OwningDoubleOrDoubleSequence& aOther)
{
  switch (aOther.mType) {
    case eUninitialized: {
      MOZ_ASSERT(mType == eUninitialized,
                 "We need to destroy ourselves?");
      break;
    }
    case eDouble: {
      SetAsDouble() = aOther.GetAsDouble();
      break;
    }
    case eDoubleSequence: {
      SetAsDoubleSequence() = aOther.GetAsDoubleSequence();
      break;
    }
  }
  return *this;
}



IntersectionObserverEntryInit::IntersectionObserverEntryInit()
  : mBoundingClientRect(FastDictionaryInitializer()),
    mIntersectionRect(FastDictionaryInitializer()),
    mRootBounds(FastDictionaryInitializer())
{
  // Safe to pass a null context if we pass a null value
  Init(nullptr, JS::NullHandleValue);
}



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

  // Initialize these in reverse order so that any failure leaves the first one
  // uninitialized.
  if (!atomsCache->time_id.init(cx, "time") ||
      !atomsCache->target_id.init(cx, "target") ||
      !atomsCache->rootBounds_id.init(cx, "rootBounds") ||
      !atomsCache->intersectionRect_id.init(cx, "intersectionRect") ||
      !atomsCache->boundingClientRect_id.init(cx, "boundingClientRect")) {
    return false;
  }
  return true;
}

bool
IntersectionObserverEntryInit::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());
  IntersectionObserverEntryInitAtoms* atomsCache = nullptr;
  if (cx) {
    atomsCache = GetAtomCache<IntersectionObserverEntryInitAtoms>(cx);
    if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {
      return false;
    }
  }

  if (!IsConvertibleToDictionary(val)) {
    return ThrowErrorMessage(cx, MSG_NOT_DICTIONARY, sourceDescription);
  }

  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->boundingClientRect_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    if (!mBoundingClientRect.Init(cx, temp.ref(),  "'boundingClientRect' member of IntersectionObserverEntryInit", passedToJSImpl)) {
      return false;
    }
    mIsAnyMemberPresent = true;
  } else if (cx) {
    // Don't error out if we have no cx.  In that
    // situation the caller is default-constructing us and we'll
    // just assume they know what they're doing.
    return ThrowErrorMessage(cx, MSG_MISSING_REQUIRED_DICTIONARY_MEMBER,
                             "'boundingClientRect' member of IntersectionObserverEntryInit");
  }

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->intersectionRect_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    if (!mIntersectionRect.Init(cx, temp.ref(),  "'intersectionRect' member of IntersectionObserverEntryInit", passedToJSImpl)) {
      return false;
    }
    mIsAnyMemberPresent = true;
  } else if (cx) {
    // Don't error out if we have no cx.  In that
    // situation the caller is default-constructing us and we'll
    // just assume they know what they're doing.
    return ThrowErrorMessage(cx, MSG_MISSING_REQUIRED_DICTIONARY_MEMBER,
                             "'intersectionRect' member of IntersectionObserverEntryInit");
  }

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->rootBounds_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    if (!mRootBounds.Init(cx, temp.ref(),  "'rootBounds' member of IntersectionObserverEntryInit", passedToJSImpl)) {
      return false;
    }
    mIsAnyMemberPresent = true;
  } else if (cx) {
    // Don't error out if we have no cx.  In that
    // situation the caller is default-constructing us and we'll
    // just assume they know what they're doing.
    return ThrowErrorMessage(cx, MSG_MISSING_REQUIRED_DICTIONARY_MEMBER,
                             "'rootBounds' member of IntersectionObserverEntryInit");
  }

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->target_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    if (temp.ref().isObject()) {
      static_assert(IsRefcounted<mozilla::dom::Element>::value, "We can only store refcounted classes.");{
        nsresult rv = UnwrapObject<prototypes::id::Element, mozilla::dom::Element>(temp.ptr(), mTarget);
        if (NS_FAILED(rv)) {
          ThrowErrorMessage(cx, MSG_DOES_NOT_IMPLEMENT_INTERFACE, "'target' member of IntersectionObserverEntryInit", "Element");
          return false;
        }
      }
    } else {
      ThrowErrorMessage(cx, MSG_NOT_OBJECT, "'target' member of IntersectionObserverEntryInit");
      return false;
    }
    mIsAnyMemberPresent = true;
  } else if (cx) {
    // Don't error out if we have no cx.  In that
    // situation the caller is default-constructing us and we'll
    // just assume they know what they're doing.
    return ThrowErrorMessage(cx, MSG_MISSING_REQUIRED_DICTIONARY_MEMBER,
                             "'target' member of IntersectionObserverEntryInit");
  }

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->time_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    if (!ValueToPrimitive<double, eDefault>(cx, temp.ref(), &mTime)) {
      return false;
    } else if (!mozilla::IsFinite(mTime)) {
      ThrowErrorMessage(cx, MSG_NOT_FINITE, "'time' member of IntersectionObserverEntryInit");
      return false;
    }
    mIsAnyMemberPresent = true;
  } else if (cx) {
    // Don't error out if we have no cx.  In that
    // situation the caller is default-constructing us and we'll
    // just assume they know what they're doing.
    return ThrowErrorMessage(cx, MSG_MISSING_REQUIRED_DICTIONARY_MEMBER,
                             "'time' member of IntersectionObserverEntryInit");
  }
  return true;
}

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

  JS::Rooted<JSObject*> obj(cx, JS_NewPlainObject(cx));
  if (!obj) {
    return false;
  }
  rval.set(JS::ObjectValue(*obj));

  do {
    // block for our 'break' successCode and scope for 'temp' and 'currentValue'
    JS::Rooted<JS::Value> temp(cx);
    DOMRectInit const & currentValue = mBoundingClientRect;
    if (!currentValue.ToObjectInternal(cx, &temp)) {
      return false;
    }
    if (!JS_DefinePropertyById(cx, obj, atomsCache->boundingClientRect_id, temp, JSPROP_ENUMERATE)) {
      return false;
    }
    break;
  } while(false);

  do {
    // block for our 'break' successCode and scope for 'temp' and 'currentValue'
    JS::Rooted<JS::Value> temp(cx);
    DOMRectInit const & currentValue = mIntersectionRect;
    if (!currentValue.ToObjectInternal(cx, &temp)) {
      return false;
    }
    if (!JS_DefinePropertyById(cx, obj, atomsCache->intersectionRect_id, temp, JSPROP_ENUMERATE)) {
      return false;
    }
    break;
  } while(false);

  do {
    // block for our 'break' successCode and scope for 'temp' and 'currentValue'
    JS::Rooted<JS::Value> temp(cx);
    DOMRectInit const & currentValue = mRootBounds;
    if (!currentValue.ToObjectInternal(cx, &temp)) {
      return false;
    }
    if (!JS_DefinePropertyById(cx, obj, atomsCache->rootBounds_id, temp, JSPROP_ENUMERATE)) {
      return false;
    }
    break;
  } while(false);

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

  do {
    // block for our 'break' successCode and scope for 'temp' and 'currentValue'
    JS::Rooted<JS::Value> temp(cx);
    double const & currentValue = mTime;
    temp.set(JS_NumberValue(double(currentValue)));
    if (!JS_DefinePropertyById(cx, obj, atomsCache->time_id, temp, JSPROP_ENUMERATE)) {
      return false;
    }
    break;
  } while(false);

  return true;
}

void
IntersectionObserverEntryInit::TraceDictionary(JSTracer* trc)
{
}



IntersectionObserverEntryInit&
IntersectionObserverEntryInit::operator=(const IntersectionObserverEntryInit& aOther)
{
  DictionaryBase::operator=(aOther);
  mBoundingClientRect = aOther.mBoundingClientRect;
  mIntersectionRect = aOther.mIntersectionRect;
  mRootBounds = aOther.mRootBounds;
  mTarget = aOther.mTarget;
  mTime = aOther.mTime;
  return *this;
}

namespace binding_detail {
} // namespace binding_detail



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



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

  // Initialize these in reverse order so that any failure leaves the first one
  // uninitialized.
  if (!atomsCache->threshold_id.init(cx, "threshold") ||
      !atomsCache->rootMargin_id.init(cx, "rootMargin") ||
      !atomsCache->root_id.init(cx, "root")) {
    return false;
  }
  return true;
}

bool
IntersectionObserverInit::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());
  IntersectionObserverInitAtoms* atomsCache = nullptr;
  if (cx) {
    atomsCache = GetAtomCache<IntersectionObserverInitAtoms>(cx);
    if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {
      return false;
    }
  }

  if (!IsConvertibleToDictionary(val)) {
    return ThrowErrorMessage(cx, MSG_NOT_DICTIONARY, sourceDescription);
  }

  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->root_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    if (temp.ref().isObject()) {
      static_assert(IsRefcounted<mozilla::dom::Element>::value, "We can only store refcounted classes.");{
        nsresult rv = UnwrapObject<prototypes::id::Element, mozilla::dom::Element>(temp.ptr(), mRoot);
        if (NS_FAILED(rv)) {
          ThrowErrorMessage(cx, MSG_DOES_NOT_IMPLEMENT_INTERFACE, "'root' member of IntersectionObserverInit", "Element");
          return false;
        }
      }
    } else if (temp.ref().isNullOrUndefined()) {
      mRoot = nullptr;
    } else {
      ThrowErrorMessage(cx, MSG_NOT_OBJECT, "'root' member of IntersectionObserverInit");
      return false;
    }
  } else {
    mRoot = nullptr;
  }
  mIsAnyMemberPresent = true;

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->rootMargin_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    if (!ConvertJSValueToString(cx, temp.ref(), eStringify, eStringify, mRootMargin)) {
      return false;
    }
  } else {
    static const char16_t data[] = { '0', 'p', 'x', 0 };
    mRootMargin.Rebind(data, ArrayLength(data) - 1);
  }
  mIsAnyMemberPresent = true;

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->threshold_id, temp.ptr())) {
      return false;
    }
  }
  mThreshold.Uninit();
  if (!(!isNull && !temp->isUndefined())) {
    mThreshold.RawSetAsDouble() = 0.0;
  } else {
    {
      bool done = false, failed = false, tryNext;
      if (temp.ref().isObject()) {
        done = (failed = !mThreshold.TrySetToDoubleSequence(cx, temp.ref(), tryNext, passedToJSImpl)) || !tryNext;
      }
      if (!done) {
        do {
          done = (failed = !mThreshold.TrySetToDouble(cx, temp.ref(), tryNext)) || !tryNext;
          break;
        } while (false);
      }
      if (failed) {
        return false;
      }
      if (!done) {
        ThrowErrorMessage(cx, MSG_NOT_IN_UNION, "'threshold' member of IntersectionObserverInit", "DoubleSequence");
        return false;
      }
    }
  }
  mIsAnyMemberPresent = true;
  return true;
}

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

  JS::Rooted<JSObject*> obj(cx, JS_NewPlainObject(cx));
  if (!obj) {
    return false;
  }
  rval.set(JS::ObjectValue(*obj));

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

  do {
    // block for our 'break' successCode and scope for 'temp' and 'currentValue'
    JS::Rooted<JS::Value> temp(cx);
    nsString const & currentValue = mRootMargin;
    if (!xpc::NonVoidStringToJsval(cx, currentValue, &temp)) {
      return false;
    }
    if (!JS_DefinePropertyById(cx, obj, atomsCache->rootMargin_id, temp, JSPROP_ENUMERATE)) {
      return false;
    }
    break;
  } while(false);

  do {
    // block for our 'break' successCode and scope for 'temp' and 'currentValue'
    JS::Rooted<JS::Value> temp(cx);
    OwningDoubleOrDoubleSequence const & currentValue = mThreshold;
    if (!currentValue.ToJSVal(cx, obj, &temp)) {
      return false;
    }
    if (!JS_DefinePropertyById(cx, obj, atomsCache->threshold_id, temp, JSPROP_ENUMERATE)) {
      return false;
    }
    break;
  } while(false);

  return true;
}

void
IntersectionObserverInit::TraceDictionary(JSTracer* trc)
{
}



IntersectionObserverInit&
IntersectionObserverInit::operator=(const IntersectionObserverInit& aOther)
{
  DictionaryBase::operator=(aOther);
  mRoot = aOther.mRoot;
  mRootMargin = aOther.mRootMargin;
  mThreshold = aOther.mThreshold;
  return *this;
}

namespace binding_detail {
} // namespace binding_detail


void
IntersectionCallback::Call(JSContext* cx, JS::Handle<JS::Value> aThisVal, const Sequence<OwningNonNull<DOMIntersectionObserverEntry>>& entries, DOMIntersectionObserver& observer, ErrorResult& aRv)
{
  JS::Rooted<JS::Value> rval(cx, JS::UndefinedValue());
  JS::AutoValueVector argv(cx);
  if (!argv.resize(2)) {
    aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
    return;
  }
  unsigned argc = 2;

  do {
    if (!GetOrCreateDOMReflector(cx, observer, argv[1])) {
      MOZ_ASSERT(JS_IsExceptionPending(cx));
      aRv.Throw(NS_ERROR_UNEXPECTED);
      return;
    }
    break;
  } while (false);

  do {

    uint32_t length = entries.Length();
    JS::Rooted<JSObject*> returnArray(cx, JS_NewArrayObject(cx, length));
    if (!returnArray) {
      aRv.Throw(NS_ERROR_UNEXPECTED);
      return;
    }
    // Scope for 'tmp'
    {
      JS::Rooted<JS::Value> tmp(cx);
      for (uint32_t sequenceIdx0 = 0; sequenceIdx0 < length; ++sequenceIdx0) {
        // Control block to let us common up the JS_DefineElement calls when there
        // are different ways to succeed at wrapping the object.
        do {
          if (!GetOrCreateDOMReflector(cx, entries[sequenceIdx0], &tmp)) {
            MOZ_ASSERT(JS_IsExceptionPending(cx));
            aRv.Throw(NS_ERROR_UNEXPECTED);
            return;
          }
          break;
        } while (false);
        if (!JS_DefineElement(cx, returnArray, sequenceIdx0, tmp,
                              JSPROP_ENUMERATE)) {
          aRv.Throw(NS_ERROR_UNEXPECTED);
          return;
        }
      }
    }
    argv[0].setObject(*returnArray);
    break;
  } while (false);

  JS::Rooted<JS::Value> callable(cx, JS::ObjectValue(*mCallback));
  if (!JS::Call(cx, aThisVal, callable,
                JS::HandleValueArray::subarray(argv, 0, argc), &rval)) {
    aRv.NoteJSContextException(cx);
    return;
  }
}



namespace binding_detail {
} // namespace binding_detail


namespace IntersectionObserver_Binding {

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

  auto result(StrongOrRawPtr<mozilla::dom::Element>(self->GetRoot()));
  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 root_getterinfo = {
  { (JSJitGetterOp)get_root },
  { prototypes::id::IntersectionObserver },
  { PrototypeTraits<prototypes::id::IntersectionObserver>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasNone, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_UNKNOWN,  /* returnType.  Not relevant for setters. */
  false,  /* 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 < 2, "There is no slot for us");

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

  DOMString result;
  self->GetRootMargin(result);
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!xpc::NonVoidStringToJsval(cx, result, args.rval())) {
    return false;
  }
  return true;
}

static const JSJitInfo rootMargin_getterinfo = {
  { (JSJitGetterOp)get_rootMargin },
  { prototypes::id::IntersectionObserver },
  { PrototypeTraits<prototypes::id::IntersectionObserver>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasNone, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_STRING,  /* returnType.  Not relevant for setters. */
  false,  /* 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 < 2, "There is no slot for us");

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

  // Have to either root across the getter call or reget after.
  bool isXray;
  JS::Rooted<JSObject*> slotStorage(cx, GetCachedSlotStorageObject(cx, obj, &isXray));
  if (!slotStorage) {
    return false;
  }
  const size_t slotIndex = isXray ? (xpc::JSSLOT_EXPANDO_COUNT + 0) : (DOM_INSTANCE_RESERVED_SLOTS + 0);
  MOZ_ASSERT(JSCLASS_RESERVED_SLOTS(js::GetObjectClass(slotStorage)) > slotIndex);
  {
    // Scope for cachedVal
    JS::Value cachedVal = js::GetReservedSlot(slotStorage, slotIndex);
    if (!cachedVal.isUndefined()) {
      args.rval().set(cachedVal);
      // The cached value is in the compartment of slotStorage,
      // so wrap into the caller compartment as needed.
      if (MaybeWrapNonDOMObjectValue(cx, args.rval())) {
        return true;
      }
      return false;
    }
  }

  nsTArray<double> result;
  self->GetThresholds(result);
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  {
    JS::Rooted<JSObject*> conversionScope(cx, isXray ? JS::CurrentGlobalOrNull(cx) : slotStorage);
    JSAutoRealm ar(cx, conversionScope);
    do { // block we break out of when done wrapping

      uint32_t length = result.Length();
      JS::Rooted<JSObject*> returnArray(cx, JS_NewArrayObject(cx, length));
      if (!returnArray) {
        return false;
      }
      // Scope for 'tmp'
      {
        JS::Rooted<JS::Value> tmp(cx);
        for (uint32_t sequenceIdx0 = 0; sequenceIdx0 < length; ++sequenceIdx0) {
          // Control block to let us common up the JS_DefineElement calls when there
          // are different ways to succeed at wrapping the object.
          do {
            tmp.set(JS_NumberValue(double(result[sequenceIdx0])));
            break;
          } while (false);
          if (!JS_DefineElement(cx, returnArray, sequenceIdx0, tmp,
                                JSPROP_ENUMERATE)) {
            return false;
          }
        }
      }
      args.rval().setObject(*returnArray);
      break;
    } while (false);
  }
  { // And now store things in the realm of our slotStorage.
    JSAutoRealm ar(cx, slotStorage);
    // Make a copy so that we don't do unnecessary wrapping on args.rval().
    JS::Rooted<JS::Value> storedVal(cx, args.rval());
    if (!MaybeWrapNonDOMObjectValue(cx, &storedVal)) {
      return false;
    }
    js::SetReservedSlot(slotStorage, slotIndex, storedVal);
    if (!isXray) {
      // In the Xray case we don't need to do this, because getting the
      // expando object already preserved our wrapper.
      PreserveWrapper(self);
    }
  }
  // And now make sure args.rval() is in the caller realm.
  if (MaybeWrapNonDOMObjectValue(cx, args.rval())) {
    return true;
  }
  return false;
}

static const JSJitInfo thresholds_getterinfo = {
  { (JSJitGetterOp)get_thresholds },
  { prototypes::id::IntersectionObserver },
  { PrototypeTraits<prototypes::id::IntersectionObserver>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasNone, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_OBJECT,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  true,  /* isMovable.  Not relevant for setters. */
  true, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  true, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  (DOM_INSTANCE_RESERVED_SLOTS + 0)   /* Reserved slot index, if we're stored in a slot, else 0. */
};
static_assert((DOM_INSTANCE_RESERVED_SLOTS + 0) <= JSJitInfo::maxSlotIndex, "We won't fit");
static_assert((DOM_INSTANCE_RESERVED_SLOTS + 0) < 2, "There is no slot for us");

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

  if (MOZ_UNLIKELY(args.length() < 1)) {
    return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "IntersectionObserver.observe");
  }
  NonNull<mozilla::dom::Element> arg0;
  if (args[0].isObject()) {
    {
      nsresult rv = UnwrapObject<prototypes::id::Element, mozilla::dom::Element>(args[0], arg0);
      if (NS_FAILED(rv)) {
        ThrowErrorMessage(cx, MSG_DOES_NOT_IMPLEMENT_INTERFACE, "Argument 1 of IntersectionObserver.observe", "Element");
        return false;
      }
    }
  } else {
    ThrowErrorMessage(cx, MSG_NOT_OBJECT, "Argument 1 of IntersectionObserver.observe");
    return false;
  }
  self->Observe(MOZ_KnownLive(NonNullHelper(arg0)));
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().setUndefined();
  return true;
}

static const JSJitInfo observe_methodinfo = {
  { (JSJitGetterOp)observe },
  { prototypes::id::IntersectionObserver },
  { PrototypeTraits<prototypes::id::IntersectionObserver>::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 < 2, "There is no slot for us");

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

  if (MOZ_UNLIKELY(args.length() < 1)) {
    return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "IntersectionObserver.unobserve");
  }
  NonNull<mozilla::dom::Element> arg0;
  if (args[0].isObject()) {
    {
      nsresult rv = UnwrapObject<prototypes::id::Element, mozilla::dom::Element>(args[0], arg0);
      if (NS_FAILED(rv)) {
        ThrowErrorMessage(cx, MSG_DOES_NOT_IMPLEMENT_INTERFACE, "Argument 1 of IntersectionObserver.unobserve", "Element");
        return false;
      }
    }
  } else {
    ThrowErrorMessage(cx, MSG_NOT_OBJECT, "Argument 1 of IntersectionObserver.unobserve");
    return false;
  }
  self->Unobserve(MOZ_KnownLive(NonNullHelper(arg0)));
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().setUndefined();
  return true;
}

static const JSJitInfo unobserve_methodinfo = {
  { (JSJitGetterOp)unobserve },
  { prototypes::id::IntersectionObserver },
  { PrototypeTraits<prototypes::id::IntersectionObserver>::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 < 2, "There is no slot for us");

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

  self->Disconnect();
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().setUndefined();
  return true;
}

static const JSJitInfo disconnect_methodinfo = {
  { (JSJitGetterOp)disconnect },
  { prototypes::id::IntersectionObserver },
  { PrototypeTraits<prototypes::id::IntersectionObserver>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_UNDEFINED,  /* returnType.  Not relevant for setters. */
  true,  /* 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 < 2, "There is no slot for us");

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

  nsTArray<StrongPtrForMember<mozilla::dom::DOMIntersectionObserverEntry>::Type> result;
  self->TakeRecords(result);
  MOZ_ASSERT(!JS_IsExceptionPending(cx));

  uint32_t length = result.Length();
  JS::Rooted<JSObject*> returnArray(cx, JS_NewArrayObject(cx, length));
  if (!returnArray) {
    return false;
  }
  // Scope for 'tmp'
  {
    JS::Rooted<JS::Value> tmp(cx);
    for (uint32_t sequenceIdx0 = 0; sequenceIdx0 < length; ++sequenceIdx0) {
      // Control block to let us common up the JS_DefineElement calls when there
      // are different ways to succeed at wrapping the object.
      do {
        if (!GetOrCreateDOMReflector(cx, result[sequenceIdx0], &tmp)) {
          MOZ_ASSERT(JS_IsExceptionPending(cx));
          return false;
        }
        break;
      } while (false);
      if (!JS_DefineElement(cx, returnArray, sequenceIdx0, tmp,
                            JSPROP_ENUMERATE)) {
        return false;
      }
    }
  }
  args.rval().setObject(*returnArray);
  return true;
}

static const JSJitInfo takeRecords_methodinfo = {
  { (JSJitGetterOp)takeRecords },
  { prototypes::id::IntersectionObserver },
  { PrototypeTraits<prototypes::id::IntersectionObserver>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_OBJECT,  /* 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 < 2, "There is no slot for us");

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

  RefPtr<IntersectionCallback> result(self->IntersectionCallback());
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().setObjectOrNull(GetCallbackFromCallbackObject(cx, result));
  if (!MaybeWrapObjectValue(cx, args.rval())) {
    return false;
  }
  return true;
}

static const JSJitInfo intersectionCallback_getterinfo = {
  { (JSJitGetterOp)get_intersectionCallback },
  { prototypes::id::IntersectionObserver },
  { PrototypeTraits<prototypes::id::IntersectionObserver>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_OBJECT,  /* 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 < 2, "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::DOMIntersectionObserver* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::DOMIntersectionObserver>(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::DOMIntersectionObserver* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::DOMIntersectionObserver>(obj);
  if (self) {
    ClearWrapper(self, self, obj);
    AddForDeferredFinalization<mozilla::dom::DOMIntersectionObserver>(self);
  }
}

static size_t
_objectMoved(JSObject* obj, JSObject* old)
{
  mozilla::dom::DOMIntersectionObserver* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::DOMIntersectionObserver>(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("observe", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&observe_methodinfo), 1, JSPROP_ENUMERATE, nullptr),
  JS_FNSPEC("unobserve", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&unobserve_methodinfo), 1, JSPROP_ENUMERATE, nullptr),
  JS_FNSPEC("disconnect", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&disconnect_methodinfo), 0, JSPROP_ENUMERATE, nullptr),
  JS_FNSPEC("takeRecords", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&takeRecords_methodinfo), 0, 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(4 <= 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[] = {
  { "root", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &root_getterinfo, nullptr, nullptr },
  { "rootMargin", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &rootMargin_getterinfo, nullptr, nullptr },
  { "thresholds", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &thresholds_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(3 <= 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 sChromeAttributes_specs[] = {
  { "intersectionCallback", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &intersectionCallback_getterinfo, nullptr, nullptr },
  { nullptr, 0, nullptr, nullptr, nullptr, nullptr }
};
#if defined(__clang__)
#pragma clang diagnostic pop
#endif


static const Prefable<const JSPropertySpec> sChromeAttributes[] = {
  { nullptr, &sChromeAttributes_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[7];
static PropertyInfo sNativeProperties_propertyInfos[7];

static const NativePropertiesN<2> sNativeProperties = {
  false, 0,
  false, 0,
  true,  0 /* sMethods */,
  true,  1 /* sAttributes */,
  false, 0,
  false, 0,
  false, 0,
  -1,
  7,
  sNativeProperties_sortedPropertyIndices,
  {
    { sMethods, &sNativeProperties_propertyInfos[0] },
    { sAttributes, &sNativeProperties_propertyInfos[4] }
  }
};
static_assert(7 < 1ull << CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount),
    "We have a property info count that is oversized");

static uint16_t sChromeOnlyNativeProperties_sortedPropertyIndices[1];
static PropertyInfo sChromeOnlyNativeProperties_propertyInfos[1];

static const NativePropertiesN<1> sChromeOnlyNativeProperties = {
  false, 0,
  false, 0,
  false, 0,
  true,  0 /* sChromeAttributes */,
  false, 0,
  false, 0,
  false, 0,
  -1,
  1,
  sChromeOnlyNativeProperties_sortedPropertyIndices,
  {
    { sChromeAttributes, &sChromeOnlyNativeProperties_propertyInfos[0] }
  }
};
static_assert(1 < 1ull << CHAR_BIT * sizeof(sChromeOnlyNativeProperties.propertyInfoCount),
    "We have a property info count that is oversized");

static bool
_constructor(JSContext* cx, unsigned argc, JS::Value* vp)
{
  AUTO_PROFILER_LABEL_FAST("IntersectionObserver 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, "IntersectionObserver");
  }

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

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

  bool objIsXray = xpc::WrapperFactory::IsXrayWrapper(obj);
  RootedCallback<OwningNonNull<binding_detail::FastIntersectionCallback>> arg0(cx);
  if (args[0].isObject()) {
    if (JS::IsCallable(&args[0].toObject())) {
    { // scope for tempRoot and tempGlobalRoot if needed
      arg0 = new binding_detail::FastIntersectionCallback(&args[0].toObject(), JS::CurrentGlobalOrNull(cx));
    }
    } else {
      ThrowErrorMessage(cx, MSG_NOT_CALLABLE, "Argument 1 of IntersectionObserver.constructor");
      return false;
    }
  } else {
    ThrowErrorMessage(cx, MSG_NOT_OBJECT, "Argument 1 of IntersectionObserver.constructor");
    return false;
  }
  binding_detail::FastIntersectionObserverInit arg1;
  if (!arg1.Init(cx, (args.hasDefined(1)) ? args[1] : JS::NullHandleValue,  "Argument 2 of IntersectionObserver.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::DOMIntersectionObserver>(mozilla::dom::DOMIntersectionObserver::Constructor(global, NonNullHelper(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::IntersectionObserver,
  PrototypeTraits<prototypes::id::IntersectionObserver>::Depth,
  sNativePropertyHooks,
  "function IntersectionObserver() {\n    [native code]\n}",
  JS::GetRealmFunctionPrototype
};

static const DOMIfaceAndProtoJSClass sPrototypeClass = {
  {
    "IntersectionObserverPrototype",
    JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE),
    JS_NULL_CLASS_OPS,
    JS_NULL_CLASS_SPEC,
    JS_NULL_CLASS_EXT,
    JS_NULL_OBJECT_OPS
  },
  eInterfacePrototype,
  false,
  prototypes::id::IntersectionObserver,
  PrototypeTraits<prototypes::id::IntersectionObserver>::Depth,
  sNativePropertyHooks,
  "[object IntersectionObserverPrototype]",
  JS::GetRealmObjectPrototype
};

bool
ConstructorEnabled(JSContext* aCx, JS::Handle<JSObject*> aObj)
{
  static bool sPrefValue;
  static bool sPrefCacheSetUp = false;
  if (!sPrefCacheSetUp) {
    sPrefCacheSetUp = true;
    Preferences::AddBoolVarCache(&sPrefValue, "dom.IntersectionObserver.enabled");
  }

  return sPrefValue;
}

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 = {
  { "IntersectionObserver",
    JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(2),
    &sClassOps,
    JS_NULL_CLASS_SPEC,
    &sClassExtension,
    JS_NULL_OBJECT_OPS
  },
  { prototypes::id::IntersectionObserver, 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 },
  IsBaseOf<nsISupports, mozilla::dom::DOMIntersectionObserver >::value,
  sNativePropertyHooks,
  FindAssociatedGlobalForNative<mozilla::dom::DOMIntersectionObserver>::Get,
  GetProtoObjectHandle,
  GetCCParticipant<mozilla::dom::DOMIntersectionObserver>::Get()
};
static_assert(1 == DOM_INSTANCE_RESERVED_SLOTS,
              "Must have the right minimal number of reserved slots.");
static_assert(2 >= 2,
              "Must have enough reserved slots.");

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

bool
Wrap(JSContext* aCx, mozilla::dom::DOMIntersectionObserver* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
{
  static_assert(!IsBaseOf<NonRefcountedDOMObject, mozilla::dom::DOMIntersectionObserver>::value,
                "Shouldn't have wrappercached things that are not refcounted.");
  MOZ_ASSERT(static_cast<mozilla::dom::DOMIntersectionObserver*>(aObject) ==
             reinterpret_cast<mozilla::dom::DOMIntersectionObserver*>(aObject),
             "Multiple inheritance for mozilla::dom::DOMIntersectionObserver 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::DOMIntersectionObserver> creator(aCx);
  creator.CreateObject(aCx, sClass.ToJSClass(), proto, aObject, aReflector);
  if (!aReflector) {
    return false;
  }

  aCache->SetWrapper(aReflector);
  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;
}

// This may allocate too many slots, because we only really need
// slots for our non-interface-typed members that we cache.  But
// allocating slots only for those would make the slot index
// computations much more complicated, so let's do this the simple
// way for now.
DEFINE_XRAY_EXPANDO_CLASS(static, sXrayExpandoObjectClass, 1);

const NativePropertyHooks sNativePropertyHooks[] = { {
  nullptr,
  nullptr,
  nullptr,
  { sNativeProperties.Upcast(), sChromeOnlyNativeProperties.Upcast() },
  prototypes::id::IntersectionObserver,
  constructors::id::IntersectionObserver,
  nullptr,
  &sXrayExpandoObjectClass
} };

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

  JS::Rooted<JSObject*> constructorProto(aCx, JS::GetRealmFunctionPrototype(aCx));
  if (!constructorProto) {
    return;
  }

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

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

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

} // namespace IntersectionObserver_Binding



namespace IntersectionObserverEntry_Binding {

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

  double result(self->Time());
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().set(JS_NumberValue(double(result)));
  return true;
}

static const JSJitInfo time_getterinfo = {
  { (JSJitGetterOp)get_time },
  { prototypes::id::IntersectionObserverEntry },
  { PrototypeTraits<prototypes::id::IntersectionObserverEntry>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasNone, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_DOUBLE,  /* 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");

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

  auto result(StrongOrRawPtr<mozilla::dom::DOMRectReadOnly>(self->GetRootBounds()));
  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 rootBounds_getterinfo = {
  { (JSJitGetterOp)get_rootBounds },
  { prototypes::id::IntersectionObserverEntry },
  { PrototypeTraits<prototypes::id::IntersectionObserverEntry>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasNone, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_UNKNOWN,  /* returnType.  Not relevant for setters. */
  false,  /* 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");

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

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

static const JSJitInfo boundingClientRect_getterinfo = {
  { (JSJitGetterOp)get_boundingClientRect },
  { prototypes::id::IntersectionObserverEntry },
  { PrototypeTraits<prototypes::id::IntersectionObserverEntry>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasNone, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_OBJECT,  /* returnType.  Not relevant for setters. */
  false,  /* 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");

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

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

static const JSJitInfo intersectionRect_getterinfo = {
  { (JSJitGetterOp)get_intersectionRect },
  { prototypes::id::IntersectionObserverEntry },
  { PrototypeTraits<prototypes::id::IntersectionObserverEntry>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasNone, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_OBJECT,  /* returnType.  Not relevant for setters. */
  false,  /* 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");

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

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

static const JSJitInfo isIntersecting_getterinfo = {
  { (JSJitGetterOp)get_isIntersecting },
  { prototypes::id::IntersectionObserverEntry },
  { PrototypeTraits<prototypes::id::IntersectionObserverEntry>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasNone, /* 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");

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

  double result(self->IntersectionRatio());
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().set(JS_NumberValue(double(result)));
  return true;
}

static const JSJitInfo intersectionRatio_getterinfo = {
  { (JSJitGetterOp)get_intersectionRatio },
  { prototypes::id::IntersectionObserverEntry },
  { PrototypeTraits<prototypes::id::IntersectionObserverEntry>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasNone, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_DOUBLE,  /* 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");

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

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

static const JSJitInfo target_getterinfo = {
  { (JSJitGetterOp)get_target },
  { prototypes::id::IntersectionObserverEntry },
  { PrototypeTraits<prototypes::id::IntersectionObserverEntry>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasNone, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_OBJECT,  /* returnType.  Not relevant for setters. */
  false,  /* 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::DOMIntersectionObserverEntry* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::DOMIntersectionObserverEntry>(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::DOMIntersectionObserverEntry* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::DOMIntersectionObserverEntry>(obj);
  if (self) {
    ClearWrapper(self, self, obj);
    AddForDeferredFinalization<mozilla::dom::DOMIntersectionObserverEntry>(self);
  }
}

static size_t
_objectMoved(JSObject* obj, JSObject* old)
{
  mozilla::dom::DOMIntersectionObserverEntry* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::DOMIntersectionObserverEntry>(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 JSPropertySpec sAttributes_specs[] = {
  { "time", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &time_getterinfo, nullptr, nullptr },
  { "rootBounds", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &rootBounds_getterinfo, nullptr, nullptr },
  { "boundingClientRect", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &boundingClientRect_getterinfo, nullptr, nullptr },
  { "intersectionRect", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &intersectionRect_getterinfo, nullptr, nullptr },
  { "isIntersecting", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &isIntersecting_getterinfo, nullptr, nullptr },
  { "intersectionRatio", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &intersectionRatio_getterinfo, nullptr, nullptr },
  { "target", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &target_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(7 <= 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[7];
static PropertyInfo sNativeProperties_propertyInfos[7];

static const NativePropertiesN<1> sNativeProperties = {
  false, 0,
  false, 0,
  false, 0,
  true,  0 /* sAttributes */,
  false, 0,
  false, 0,
  false, 0,
  -1,
  7,
  sNativeProperties_sortedPropertyIndices,
  {
    { sAttributes, &sNativeProperties_propertyInfos[0] }
  }
};
static_assert(7 < 1ull << CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount),
    "We have a property info count that is oversized");

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

static const DOMIfaceAndProtoJSClass sPrototypeClass = {
  {
    "IntersectionObserverEntryPrototype",
    JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE),
    JS_NULL_CLASS_OPS,
    JS_NULL_CLASS_SPEC,
    JS_NULL_CLASS_EXT,
    JS_NULL_OBJECT_OPS
  },
  eInterfacePrototype,
  false,
  prototypes::id::IntersectionObserverEntry,
  PrototypeTraits<prototypes::id::IntersectionObserverEntry>::Depth,
  sNativePropertyHooks,
  "[object IntersectionObserverEntryPrototype]",
  JS::GetRealmObjectPrototype
};

bool
ConstructorEnabled(JSContext* aCx, JS::Handle<JSObject*> aObj)
{
  static bool sPrefValue;
  static bool sPrefCacheSetUp = false;
  if (!sPrefCacheSetUp) {
    sPrefCacheSetUp = true;
    Preferences::AddBoolVarCache(&sPrefValue, "dom.IntersectionObserver.enabled");
  }

  return sPrefValue;
}

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 = {
  { "IntersectionObserverEntry",
    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::IntersectionObserverEntry, 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 },
  IsBaseOf<nsISupports, mozilla::dom::DOMIntersectionObserverEntry >::value,
  sNativePropertyHooks,
  FindAssociatedGlobalForNative<mozilla::dom::DOMIntersectionObserverEntry>::Get,
  GetProtoObjectHandle,
  GetCCParticipant<mozilla::dom::DOMIntersectionObserverEntry>::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::DOMIntersectionObserverEntry* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
{
  static_assert(!IsBaseOf<NonRefcountedDOMObject, mozilla::dom::DOMIntersectionObserverEntry>::value,
                "Shouldn't have wrappercached things that are not refcounted.");
  MOZ_ASSERT(static_cast<mozilla::dom::DOMIntersectionObserverEntry*>(aObject) ==
             reinterpret_cast<mozilla::dom::DOMIntersectionObserverEntry*>(aObject),
             "Multiple inheritance for mozilla::dom::DOMIntersectionObserverEntry 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::DOMIntersectionObserverEntry> creator(aCx);
  creator.CreateObject(aCx, sClass.ToJSClass(), proto, aObject, aReflector);
  if (!aReflector) {
    return false;
  }

  aCache->SetWrapper(aReflector);
  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::IntersectionObserverEntry,
  constructors::id::IntersectionObserverEntry,
  nullptr,
  &DefaultXrayExpandoObjectClass
} };

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

  JS::Rooted<JSObject*> constructorProto(aCx, JS::GetRealmFunctionPrototype(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::IntersectionObserverEntry);
  JS::Heap<JSObject*>* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::IntersectionObserverEntry);
  dom::CreateInterfaceObjects(aCx, aGlobal, parentProto,
                              &sPrototypeClass.mBase, protoCache,
                              nullptr,
                              constructorProto, &sInterfaceObjectClass.mBase, 0, nullptr,
                              interfaceCache,
                              sNativeProperties.Upcast(),
                              nullptr,
                              "IntersectionObserverEntry", aDefineOnGlobal,
                              nullptr,
                              false);
}

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

} // namespace IntersectionObserverEntry_Binding



} // namespace dom
} // namespace mozilla

Coverage Report

Created: 2018-09-25 14:53