/* THIS FILE IS AUTOGENERATED FROM FileList.webidl BY Codegen.py - DO NOT EDIT */

#include "FileListBinding.h"

#include "WrapperFactory.h"

#include "mozilla/OwningNonNull.h"

#include "mozilla/dom/BindingUtils.h"

#include "mozilla/dom/DOMJSClass.h"

#include "mozilla/dom/DOMJSProxyHandler.h"

#include "mozilla/dom/File.h"

#include "mozilla/dom/FileList.h"

#include "mozilla/dom/NonRefcountedDOMObject.h"

#include "mozilla/dom/Nullable.h"

#include "mozilla/dom/PrimitiveConversions.h"

#include "mozilla/dom/XrayExpandoClass.h"

namespace mozilla {

namespace dom {

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

using namespace mozilla::dom::binding_detail;

namespace FileList_Binding {

MOZ_CAN_RUN_SCRIPT static bool

item(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::FileList* self, const JSJitMethodCallArgs& args)

{

  AUTO_PROFILER_LABEL_FAST("FileList.item", DOM, cx);

  if (MOZ_UNLIKELY(args.length() < 1)) {

    return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "FileList.item");

  }

  uint32_t arg0;

  if (!ValueToPrimitive<uint32_t, eDefault>(cx, args[0], &arg0)) {

    return false;

  }

  auto result(StrongOrRawPtr<mozilla::dom::File>(self->Item(arg0)));

  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 item_methodinfo = {

  { (JSJitGetterOp)item },

  { prototypes::id::FileList },

  { PrototypeTraits<prototypes::id::FileList>::Depth },

  JSJitInfo::Method,

  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

get_length(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::FileList* self, JSJitGetterCallArgs args)

{

  AUTO_PROFILER_LABEL_FAST("get FileList.length", DOM, cx);

  uint32_t result(self->Length());

  MOZ_ASSERT(!JS_IsExceptionPending(cx));

  args.rval().setNumber(result);

  return true;

}

static const JSJitInfo length_getterinfo = {

  { (JSJitGetterOp)get_length },

  { prototypes::id::FileList },

  { PrototypeTraits<prototypes::id::FileList>::Depth },

  JSJitInfo::Getter,

  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */

  JSVAL_TYPE_DOUBLE,  /* 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 < 1, "There is no slot for us");

// 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("item", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&item_methodinfo), 1, JSPROP_ENUMERATE, nullptr),

  JS_SYM_FNSPEC(iterator, nullptr, nullptr, 0, 0, "ArrayValues"),

  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(2 <= 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[] = {

  { "length", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &length_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)");

static uint16_t sNativeProperties_sortedPropertyIndices[3];

static PropertyInfo sNativeProperties_propertyInfos[3];

static const NativePropertiesN<2> sNativeProperties = {

  false, 0,

  false, 0,

  true,  0 /* sMethods */,

  true,  1 /* sAttributes */,

  false, 0,

  false, 0,

  false, 0,

  -1,

  3,

  sNativeProperties_sortedPropertyIndices,

  {

    { sMethods, &sNativeProperties_propertyInfos[0] },

    { sAttributes, &sNativeProperties_propertyInfos[2] }

  }

};

static_assert(3 < 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::FileList,

  PrototypeTraits<prototypes::id::FileList>::Depth,

  sNativePropertyHooks,

  "function FileList() {\n    [native code]\n}",

  JS::GetRealmFunctionPrototype

};

static const DOMIfaceAndProtoJSClass sPrototypeClass = {

  {

    "FileListPrototype",

    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::FileList,

  PrototypeTraits<prototypes::id::FileList>::Depth,

  sNativePropertyHooks,

  "[object FileListPrototype]",

  JS::GetRealmObjectPrototype

};

static_assert(IsBaseOf<nsISupports, mozilla::dom::FileList >::value,

                  "We don't support non-nsISupports native classes for "

                  "proxy-based bindings yet");

class DOMProxyHandler : public mozilla::dom::DOMProxyHandler

{

public:

  explicit constexpr DOMProxyHandler()

  {

  }

  virtual bool

  getOwnPropDescriptor(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, bool ignoreNamedProps, JS::MutableHandle<JS::PropertyDescriptor> desc) const override;

  virtual bool

  defineProperty(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, JS::Handle<JS::PropertyDescriptor> desc, JS::ObjectOpResult& opresult, bool* defined) const override;

  using mozilla::dom::DOMProxyHandler::defineProperty;

  virtual bool

  ownPropNames(JSContext* cx, JS::Handle<JSObject*> proxy, unsigned flags, JS::AutoIdVector& props) const override;

  virtual bool

  hasOwn(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, bool* bp) const override;

  virtual bool

  get(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<JS::Value> receiver, JS::Handle<jsid> id, JS::MutableHandle<JS::Value> vp) const override;

  virtual const char*

  className(JSContext* cx, JS::Handle<JSObject*> proxy) const override;

  virtual bool

  finalizeInBackground(const JS::Value& priv) const override;

  virtual void

  finalize(JSFreeOp* fop, JSObject* proxy) const override;

  static const DOMProxyHandler*

  getInstance();

  virtual bool

  delete_(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, JS::ObjectOpResult& opresult) const override;

  virtual bool

  getElements(JSContext* cx, JS::Handle<JSObject*> proxy, uint32_t begin, uint32_t end, js::ElementAdder* adder) const override;

  virtual size_t

  objectMoved(JSObject* obj, JSObject* old) const override;

};

MOZ_ALWAYS_INLINE bool

IsProxy(JSObject* obj)

{

  return js::IsProxy(obj) && js::GetProxyHandler(obj) == DOMProxyHandler::getInstance();

}

MOZ_ALWAYS_INLINE mozilla::dom::FileList*

UnwrapProxy(JSObject* obj)

{

  MOZ_ASSERT(js::IsProxy(obj));

  if (js::GetProxyHandler(obj) != DOMProxyHandler::getInstance()) {

    MOZ_ASSERT(xpc::WrapperFactory::IsXrayWrapper(obj));

    obj = js::UncheckedUnwrap(obj);

  }

  MOZ_ASSERT(IsProxy(obj));

  return static_cast<mozilla::dom::FileList*>(js::GetProxyReservedSlot(obj, DOM_OBJECT_SLOT).toPrivate());

}

bool

DOMProxyHandler::getOwnPropDescriptor(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, bool ignoreNamedProps, JS::MutableHandle<JS::PropertyDescriptor> desc) const

{

  bool isXray = xpc::WrapperFactory::IsXrayWrapper(proxy);

  uint32_t index = GetArrayIndexFromId(cx, id);

  if (IsArrayIndex(index)) {

    mozilla::dom::FileList* self = UnwrapProxy(proxy);

    bool found = false;

    auto result(StrongOrRawPtr<mozilla::dom::File>(self->IndexedGetter(index, found)));

    MOZ_ASSERT(!JS_IsExceptionPending(cx));

    if (found) {

      if (!result) {

        desc.value().setNull();

        FillPropertyDescriptor(desc, proxy, true);

        return true;

      }

      if (!GetOrCreateDOMReflector(cx, result, desc.value())) {

        MOZ_ASSERT(JS_IsExceptionPending(cx));

        return false;

      }

      FillPropertyDescriptor(desc, proxy, true);

      return true;

    }

  }

  JS::Rooted<JSObject*> expando(cx);

  if (!isXray && (expando = GetExpandoObject(proxy))) {

    if (!JS_GetOwnPropertyDescriptorById(cx, expando, id, desc)) {

      return false;

    }

    if (desc.object()) {

      // Pretend the property lives on the wrapper.

      desc.object().set(proxy);

      return true;

    }

  }

  desc.object().set(nullptr);

  return true;

}

bool

DOMProxyHandler::defineProperty(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, JS::Handle<JS::PropertyDescriptor> desc, JS::ObjectOpResult& opresult, bool* defined) const

{

  if (IsArrayIndex(GetArrayIndexFromId(cx, id))) {

    *defined = true;

    return opresult.failNoIndexedSetter();

  }

  return mozilla::dom::DOMProxyHandler::defineProperty(cx, proxy, id, desc, opresult, defined);

}

bool

DOMProxyHandler::ownPropNames(JSContext* cx, JS::Handle<JSObject*> proxy, unsigned flags, JS::AutoIdVector& props) const

{

  bool isXray = xpc::WrapperFactory::IsXrayWrapper(proxy);

  uint32_t length = UnwrapProxy(proxy)->Length();

  MOZ_ASSERT(int32_t(length) >= 0);

  for (int32_t i = 0; i < int32_t(length); ++i) {

    if (!props.append(INT_TO_JSID(i))) {

      return false;

    }

  }

  JS::Rooted<JSObject*> expando(cx);

  if (!isXray && (expando = DOMProxyHandler::GetExpandoObject(proxy)) &&

      !js::GetPropertyKeys(cx, expando, flags, &props)) {

    return false;

  }

  return true;

}

bool

DOMProxyHandler::hasOwn(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, bool* bp) const

{

  MOZ_ASSERT(!xpc::WrapperFactory::IsXrayWrapper(proxy),

            "Should not have a XrayWrapper here");

  uint32_t index = GetArrayIndexFromId(cx, id);

  if (IsArrayIndex(index)) {

    bool found = false;

    mozilla::dom::FileList* self = UnwrapProxy(proxy);

    auto result(StrongOrRawPtr<mozilla::dom::File>(self->IndexedGetter(index, found)));

    MOZ_ASSERT(!JS_IsExceptionPending(cx));

    (void)result;

    *bp = found;

    return true;

  }

  JS::Rooted<JSObject*> expando(cx, GetExpandoObject(proxy));

  if (expando) {

    bool b = true;

    bool ok = JS_HasPropertyById(cx, expando, id, &b);

    *bp = !!b;

    if (!ok || *bp) {

      return ok;

    }

  }

  *bp = false;

  return true;

}

bool

DOMProxyHandler::get(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<JS::Value> receiver, JS::Handle<jsid> id, JS::MutableHandle<JS::Value> vp) const

{

  MOZ_ASSERT(!xpc::WrapperFactory::IsXrayWrapper(proxy),

              "Should not have a XrayWrapper here");

  uint32_t index = GetArrayIndexFromId(cx, id);

  if (IsArrayIndex(index)) {

    mozilla::dom::FileList* self = UnwrapProxy(proxy);

    bool found = false;

    auto result(StrongOrRawPtr<mozilla::dom::File>(self->IndexedGetter(index, found)));

    MOZ_ASSERT(!JS_IsExceptionPending(cx));

    if (found) {

      if (!result) {

        vp.setNull();

        return true;

      }

      if (!GetOrCreateDOMReflector(cx, result, vp)) {

        MOZ_ASSERT(JS_IsExceptionPending(cx));

        return false;

      }

      return true;

    }

    // Even if we don't have this index, we don't forward the

    // get on to our expando object.

  } else {

    { // Scope for expando

      JS::Rooted<JSObject*> expando(cx, DOMProxyHandler::GetExpandoObject(proxy));

      if (expando) {

        bool hasProp;

        if (!JS_HasPropertyById(cx, expando, id, &hasProp)) {

          return false;

        }

        if (hasProp) {

          // Forward the get to the expando object, but our receiver is whatever our

          // receiver is.

          return JS_ForwardGetPropertyTo(cx, expando, id, receiver, vp);

        }

      }

    }

  }

  bool foundOnPrototype;

  if (!GetPropertyOnPrototype(cx, proxy, receiver, id, &foundOnPrototype, vp)) {

    return false;

  }

  if (foundOnPrototype) {

    return true;

  }

  vp.setUndefined();

  return true;

}

const char*

DOMProxyHandler::className(JSContext* cx, JS::Handle<JSObject*> proxy) const

{

  return "FileList";

}

bool

DOMProxyHandler::finalizeInBackground(const JS::Value& priv) const

{

  return false;

}

void

DOMProxyHandler::finalize(JSFreeOp* fop, JSObject* proxy) const

{

  mozilla::dom::FileList* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::FileList>(proxy);

  if (self) {

    ClearWrapper(self, self, proxy);

    AddForDeferredFinalization<mozilla::dom::FileList>(self);

  }

}

const DOMProxyHandler*

DOMProxyHandler::getInstance()

{

  static const DOMProxyHandler instance;

  return &instance;

}

bool

DOMProxyHandler::delete_(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, JS::ObjectOpResult& opresult) const

{

  MOZ_ASSERT(!xpc::WrapperFactory::IsXrayWrapper(proxy),

            "Should not have a XrayWrapper here");

  uint32_t index = GetArrayIndexFromId(cx, id);

  if (IsArrayIndex(index)) {

    bool deleteSucceeded;

    bool found = false;

    mozilla::dom::FileList* self = UnwrapProxy(proxy);

    auto result(StrongOrRawPtr<mozilla::dom::File>(self->IndexedGetter(index, found)));

    MOZ_ASSERT(!JS_IsExceptionPending(cx));

    (void)result;

    deleteSucceeded = !found;

    return deleteSucceeded ? opresult.succeed() : opresult.failCantDelete();

  }

  return dom::DOMProxyHandler::delete_(cx, proxy, id, opresult);

}

bool

DOMProxyHandler::getElements(JSContext* cx, JS::Handle<JSObject*> proxy, uint32_t begin, uint32_t end, js::ElementAdder* adder) const

{

  JS::Rooted<JS::Value> temp(cx);

  MOZ_ASSERT(!xpc::WrapperFactory::IsXrayWrapper(proxy),

             "Should not have a XrayWrapper here");

  mozilla::dom::FileList* self = UnwrapProxy(proxy);

  uint32_t length = self->Length();

  // Compute the end of the indices we'll get ourselves

  uint32_t ourEnd = std::max(begin, std::min(end, length));

  for (uint32_t index = begin; index < ourEnd; ++index) {

    bool found = false;

    auto result(StrongOrRawPtr<mozilla::dom::File>(self->IndexedGetter(index, found)));

    MOZ_ASSERT(!JS_IsExceptionPending(cx));

    MOZ_ASSERT(found);

    if (!result) {

      temp.setNull();

      if (!adder->append(cx, temp)) return false;

      continue;

    }

    if (!GetOrCreateDOMReflector(cx, result, &temp)) {

      MOZ_ASSERT(JS_IsExceptionPending(cx));

      return false;

    }

    if (!adder->append(cx, temp)) return false;

    continue;

  }

  if (end > ourEnd) {

    JS::Rooted<JSObject*> proto(cx);

    if (!js::GetObjectProto(cx, proxy, &proto)) {

      return false;

    }

    return js::GetElementsWithAdder(cx, proto, proxy, ourEnd, end, adder);

  }

  return true;

}

size_t

DOMProxyHandler::objectMoved(JSObject* obj, JSObject* old) const

{

  mozilla::dom::FileList* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::FileList>(obj);

  if (self) {

    UpdateWrapper(self, self, obj, old);

  }

  return 0;

}

static const DOMJSClass sClass = {

  PROXY_CLASS_DEF("FileList",

                  JSCLASS_IS_DOMJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(1)),

  { prototypes::id::FileList, 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::FileList >::value,

  sNativePropertyHooks,

  FindAssociatedGlobalForNative<mozilla::dom::FileList>::Get,

  GetProtoObjectHandle,

  GetCCParticipant<mozilla::dom::FileList>::Get()

};

bool

Wrap(JSContext* aCx, mozilla::dom::FileList* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)

{

  static_assert(!IsBaseOf<NonRefcountedDOMObject, mozilla::dom::FileList>::value,

                "Shouldn't have wrappercached things that are not refcounted.");

  MOZ_ASSERT(static_cast<mozilla::dom::FileList*>(aObject) ==

             reinterpret_cast<mozilla::dom::FileList*>(aObject),

             "Multiple inheritance for mozilla::dom::FileList 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::FileList> creator(aCx);

  creator.CreateProxyObject(aCx, &sClass.mBase, DOMProxyHandler::getInstance(),

                            proto, aObject, JS::UndefinedHandleValue, 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;

}

static bool

ResolveOwnProperty(JSContext* cx, JS::Handle<JSObject*> wrapper, JS::Handle<JSObject*> obj, JS::Handle<jsid> id, JS::MutableHandle<JS::PropertyDescriptor> desc)

{

  return js::GetProxyHandler(obj)->getOwnPropertyDescriptor(cx, wrapper, id, desc);

}

static bool

EnumerateOwnProperties(JSContext* cx, JS::Handle<JSObject*> wrapper, JS::Handle<JSObject*> obj, JS::AutoIdVector& props)

{

  return js::GetProxyHandler(obj)->ownPropertyKeys(cx, wrapper, props);

}

const NativePropertyHooks sNativePropertyHooks[] = { {

  ResolveOwnProperty,

  EnumerateOwnProperties,

  nullptr,

  { sNativeProperties.Upcast(), nullptr },

  prototypes::id::FileList,

  constructors::id::FileList,

  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::FileList);

  JS::Heap<JSObject*>* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::FileList);

  dom::CreateInterfaceObjects(aCx, aGlobal, parentProto,

                              &sPrototypeClass.mBase, protoCache,

                              nullptr,

                              constructorProto, &sInterfaceObjectClass.mBase, 0, nullptr,

                              interfaceCache,

                              sNativeProperties.Upcast(),

                              nullptr,

                              "FileList", aDefineOnGlobal,

                              nullptr,

                              false);

}

JSObject*

GetConstructorObject(JSContext* aCx)

{

  return GetConstructorObjectHandle(aCx);

}

} // namespace FileList_Binding

} // namespace dom

} // namespace mozilla