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

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

#include "AtomList.h"
#include "BaseAudioContextBinding.h"
#include "EventHandlerBinding.h"
#include "OfflineAudioContextBinding.h"
#include "WrapperFactory.h"
#include "mozilla/FloatingPoint.h"
#include "mozilla/OwningNonNull.h"
#include "mozilla/Preferences.h"
#include "mozilla/dom/AudioContext.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/DOMJSClass.h"
#include "mozilla/dom/NonRefcountedDOMObject.h"
#include "mozilla/dom/Nullable.h"
#include "mozilla/dom/PrimitiveConversions.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/dom/SimpleGlobalObject.h"
#include "mozilla/dom/ToJSValue.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;



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



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

  // Initialize these in reverse order so that any failure leaves the first one
  // uninitialized.
  if (!atomsCache->sampleRate_id.init(cx, "sampleRate") ||
      !atomsCache->numberOfChannels_id.init(cx, "numberOfChannels") ||
      !atomsCache->length_id.init(cx, "length")) {
    return false;
  }
  return true;
}

bool
OfflineAudioContextOptions::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());
  OfflineAudioContextOptionsAtoms* atomsCache = nullptr;
  if (cx) {
    atomsCache = GetAtomCache<OfflineAudioContextOptionsAtoms>(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->length_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    if (!ValueToPrimitive<uint32_t, eDefault>(cx, temp.ref(), &mLength)) {
      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,
                             "'length' member of OfflineAudioContextOptions");
  }

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->numberOfChannels_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    if (!ValueToPrimitive<uint32_t, eDefault>(cx, temp.ref(), &mNumberOfChannels)) {
      return false;
    }
  } else {
    mNumberOfChannels = 1U;
  }
  mIsAnyMemberPresent = true;

  if (!isNull) {
    if (!JS_GetPropertyById(cx, *object, atomsCache->sampleRate_id, temp.ptr())) {
      return false;
    }
  }
  if (!isNull && !temp->isUndefined()) {
    if (!ValueToPrimitive<float, eDefault>(cx, temp.ref(), &mSampleRate)) {
      return false;
    } else if (!mozilla::IsFinite(mSampleRate)) {
      ThrowErrorMessage(cx, MSG_NOT_FINITE, "'sampleRate' member of OfflineAudioContextOptions");
      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,
                             "'sampleRate' member of OfflineAudioContextOptions");
  }
  return true;
}

bool
OfflineAudioContextOptions::Init(const nsAString& aJSON)
{
  AutoJSAPI jsapi;
  JSObject* cleanGlobal = SimpleGlobalObject::Create(SimpleGlobalObject::GlobalType::BindingDetail);
  if (!cleanGlobal) {
    return false;
  }
  if (!jsapi.Init(cleanGlobal)) {
    return false;
  }
  JSContext* cx = jsapi.cx();
  JS::Rooted<JS::Value> json(cx);
  bool ok = ParseJSON(cx, aJSON, &json);
  NS_ENSURE_TRUE(ok, false);
  return Init(cx, json);
}

bool
OfflineAudioContextOptions::ToObjectInternal(JSContext* cx, JS::MutableHandle<JS::Value> rval) const
{
  OfflineAudioContextOptionsAtoms* atomsCache = GetAtomCache<OfflineAudioContextOptionsAtoms>(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);
    uint32_t const & currentValue = mLength;
    temp.setNumber(currentValue);
    if (!JS_DefinePropertyById(cx, obj, atomsCache->length_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);
    uint32_t const & currentValue = mNumberOfChannels;
    temp.setNumber(currentValue);
    if (!JS_DefinePropertyById(cx, obj, atomsCache->numberOfChannels_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);
    float const & currentValue = mSampleRate;
    temp.set(JS_NumberValue(double(currentValue)));
    if (!JS_DefinePropertyById(cx, obj, atomsCache->sampleRate_id, temp, JSPROP_ENUMERATE)) {
      return false;
    }
    break;
  } while(false);

  return true;
}

bool
OfflineAudioContextOptions::ToJSON(nsAString& aJSON) const
{
  AutoJSAPI jsapi;
  jsapi.Init();
  JSContext *cx = jsapi.cx();
  // It's safe to use UnprivilegedJunkScopeOrWorkerGlobal here
  // because we'll only be creating objects, in ways that have no
  // side-effects, followed by a call to JS::ToJSONMaybeSafely,
  // which likewise guarantees no side-effects for the sorts of
  // things we will pass it.
  JSAutoRealm ar(cx, UnprivilegedJunkScopeOrWorkerGlobal());
  JS::Rooted<JS::Value> val(cx);
  if (!ToObjectInternal(cx, &val)) {
    return false;
  }
  JS::Rooted<JSObject*> obj(cx, &val.toObject());
  return StringifyToJSON(cx, obj, aJSON);
}

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

OfflineAudioContextOptions&
OfflineAudioContextOptions::operator=(const OfflineAudioContextOptions& aOther)
{
  DictionaryBase::operator=(aOther);
  mLength = aOther.mLength;
  mNumberOfChannels = aOther.mNumberOfChannels;
  mSampleRate = aOther.mSampleRate;
  return *this;
}

namespace binding_detail {
} // namespace binding_detail


namespace OfflineAudioContext_Binding {

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

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

  FastErrorResult rv;
  auto result(StrongOrRawPtr<Promise>(self->StartRendering(rv)));
  if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
    return false;
  }
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!ToJSValue(cx, result, args.rval())) {
    return false;
  }
  return true;
}

MOZ_CAN_RUN_SCRIPT static bool
startRendering_promiseWrapper(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::AudioContext* self, const JSJitMethodCallArgs& args)
{
  bool ok = startRendering(cx, obj, self, args);
  if (ok) {
    return true;
  }
  return ConvertExceptionToPromise(cx, args.rval());
}

static const JSJitInfo startRendering_methodinfo = {
  { (JSJitGetterOp)startRendering_promiseWrapper },
  { prototypes::id::OfflineAudioContext },
  { PrototypeTraits<prototypes::id::OfflineAudioContext>::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 < 1, "There is no slot for us");

MOZ_CAN_RUN_SCRIPT static bool
get_length(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::AudioContext* self, JSJitGetterCallArgs args)
{
  AUTO_PROFILER_LABEL_FAST("get OfflineAudioContext.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::OfflineAudioContext },
  { PrototypeTraits<prototypes::id::OfflineAudioContext>::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");

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

  RefPtr<EventHandlerNonNull> result(self->GetOncomplete());
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (result) {
    args.rval().setObjectOrNull(GetCallbackFromCallbackObject(cx, result));
    if (!MaybeWrapObjectOrNullValue(cx, args.rval())) {
      return false;
    }
    return true;
  } else {
    args.rval().setNull();
    return true;
  }
}

MOZ_CAN_RUN_SCRIPT static bool
set_oncomplete(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::AudioContext* self, JSJitSetterCallArgs args)
{
  AUTO_PROFILER_LABEL_FAST("set OfflineAudioContext.oncomplete", DOM, cx);

  RootedCallback<RefPtr<binding_detail::FastEventHandlerNonNull>> arg0(cx);
  if (args[0].isObject()) {
    { // scope for tempRoot and tempGlobalRoot if needed
      arg0 = new binding_detail::FastEventHandlerNonNull(&args[0].toObject(), JS::CurrentGlobalOrNull(cx));
    }
  } else {
    arg0 = nullptr;
  }
  self->SetOncomplete(Constify(arg0));
  MOZ_ASSERT(!JS_IsExceptionPending(cx));

  return true;
}

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

static bool
_addProperty(JSContext* cx, JS::Handle<JSObject*> obj, JS::Handle<jsid> id, JS::Handle<JS::Value> val)
{
  mozilla::dom::AudioContext* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::AudioContext>(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::AudioContext* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::AudioContext>(obj);
  if (self) {
    ClearWrapper(self, self, obj);
    AddForDeferredFinalization<mozilla::dom::AudioContext>(self);
  }
}

static size_t
_objectMoved(JSObject* obj, JSObject* old)
{
  mozilla::dom::AudioContext* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::AudioContext>(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("startRendering", (GenericMethod<NormalThisPolicy, ConvertExceptionsToPromises>), reinterpret_cast<const JSJitInfo*>(&startRendering_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(1 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
    "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");

// We deliberately use brace-elision to make Visual Studio produce better initalization code.
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wmissing-braces"
#endif
static const JSPropertySpec sAttributes_specs[] = {
  { "length", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &length_getterinfo, nullptr, nullptr },
  { "oncomplete", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &oncomplete_getterinfo, GenericSetter<NormalThisPolicy>, &oncomplete_setterinfo },
  { 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(2 <= 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[1] }
  }
};
static_assert(3 < 1ull << CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount),
    "We have a property info count that is oversized");

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

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

  unsigned argcount = std::min(args.length(), 3u);
  switch (argcount) {
    case 1: {
      GlobalObject global(cx, obj);
      if (global.Failed()) {
        return false;
      }

      bool objIsXray = xpc::WrapperFactory::IsXrayWrapper(obj);
      binding_detail::FastOfflineAudioContextOptions arg0;
      if (!arg0.Init(cx, args[0],  "Argument 1 of OfflineAudioContext.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::AudioContext>(mozilla::dom::AudioContext::Constructor(global, Constify(arg0), 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;
      break;
    }
    case 3: {
      GlobalObject global(cx, obj);
      if (global.Failed()) {
        return false;
      }

      bool objIsXray = xpc::WrapperFactory::IsXrayWrapper(obj);
      uint32_t arg0;
      if (!ValueToPrimitive<uint32_t, eDefault>(cx, args[0], &arg0)) {
        return false;
      }
      uint32_t arg1;
      if (!ValueToPrimitive<uint32_t, eDefault>(cx, args[1], &arg1)) {
        return false;
      }
      float arg2;
      if (!ValueToPrimitive<float, eDefault>(cx, args[2], &arg2)) {
        return false;
      } else if (!mozilla::IsFinite(arg2)) {
        ThrowErrorMessage(cx, MSG_NOT_FINITE, "Argument 3 of OfflineAudioContext.constructor");
        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::AudioContext>(mozilla::dom::AudioContext::Constructor(global, arg0, arg1, arg2, 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;
      break;
    }
    default: {
      return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "OfflineAudioContext");
      break;
    }
  }
  MOZ_CRASH("We have an always-returning default case");
  return false;
}

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::OfflineAudioContext,
  PrototypeTraits<prototypes::id::OfflineAudioContext>::Depth,
  sNativePropertyHooks,
  "function OfflineAudioContext() {\n    [native code]\n}",
  BaseAudioContext_Binding::GetConstructorObject
};

static const DOMIfaceAndProtoJSClass sPrototypeClass = {
  {
    "OfflineAudioContextPrototype",
    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::OfflineAudioContext,
  PrototypeTraits<prototypes::id::OfflineAudioContext>::Depth,
  sNativePropertyHooks,
  "[object OfflineAudioContextPrototype]",
  BaseAudioContext_Binding::GetProtoObject
};

bool
ConstructorEnabled(JSContext* aCx, JS::Handle<JSObject*> aObj)
{
  static bool sPrefValue;
  static bool sPrefCacheSetUp = false;
  if (!sPrefCacheSetUp) {
    sPrefCacheSetUp = true;
    Preferences::AddBoolVarCache(&sPrefValue, "dom.webaudio.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 = {
  { "OfflineAudioContext",
    JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(1),
    &sClassOps,
    JS_NULL_CLASS_SPEC,
    &sClassExtension,
    JS_NULL_OBJECT_OPS
  },
  { prototypes::id::EventTarget, prototypes::id::BaseAudioContext, prototypes::id::OfflineAudioContext, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count },
  IsBaseOf<nsISupports, mozilla::dom::AudioContext >::value,
  sNativePropertyHooks,
  FindAssociatedGlobalForNative<mozilla::dom::AudioContext>::Get,
  GetProtoObjectHandle,
  GetCCParticipant<mozilla::dom::AudioContext>::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::AudioContext* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
{
  static_assert(!IsBaseOf<NonRefcountedDOMObject, mozilla::dom::AudioContext>::value,
                "Shouldn't have wrappercached things that are not refcounted.");
  MOZ_ASSERT(static_cast<mozilla::dom::AudioContext*>(aObject) ==
             reinterpret_cast<mozilla::dom::AudioContext*>(aObject),
             "Multiple inheritance for mozilla::dom::AudioContext is broken.");
  MOZ_ASSERT(static_cast<mozilla::dom::AudioContext*>(aObject) ==
             reinterpret_cast<mozilla::dom::AudioContext*>(aObject),
             "Multiple inheritance for mozilla::dom::AudioContext is broken.");
  MOZ_ASSERT(static_cast<mozilla::dom::EventTarget*>(aObject) ==
             reinterpret_cast<mozilla::dom::EventTarget*>(aObject),
             "Multiple inheritance for mozilla::dom::EventTarget 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::AudioContext> 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::OfflineAudioContext,
  constructors::id::OfflineAudioContext,
  BaseAudioContext_Binding::sNativePropertyHooks,
  &DefaultXrayExpandoObjectClass
} };

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

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

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

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

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

} // namespace OfflineAudioContext_Binding



} // namespace dom
} // namespace mozilla

Coverage Report

Created: 2018-09-25 14:53