/* THIS FILE IS AUTOGENERATED FROM ReadableStreamDefaultReader.webidl BY Codegen.py - DO NOT EDIT */ #include #include "AtomList.h" #include "MainThreadUtils.h" #include "ReadableStreamDefaultReaderBinding.h" #include "WrapperFactory.h" #include "js/CallAndConstruct.h" #include "js/Exception.h" #include "js/MapAndSet.h" #include "js/Object.h" #include "js/PropertyAndElement.h" #include "js/PropertyDescriptor.h" #include "js/experimental/JitInfo.h" #include "jsapi.h" #include "mozilla/Atomics.h" #include "mozilla/OwningNonNull.h" #include "mozilla/ProfilerLabels.h" #include "mozilla/dom/BindingCallContext.h" #include "mozilla/dom/BindingUtils.h" #include "mozilla/dom/DOMJSClass.h" #include "mozilla/dom/NonRefcountedDOMObject.h" #include "mozilla/dom/PrimitiveConversions.h" #include "mozilla/dom/Promise.h" #include "mozilla/dom/ReadableStream.h" #include "mozilla/dom/ReadableStreamBYOBReader.h" #include "mozilla/dom/ReadableStreamDefaultReader.h" #include "mozilla/dom/ScriptSettings.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; namespace binding_detail { constexpr nsLiteralCString EnumStrings::Values[1]; } // namespace binding_detail bool ToJSValue(JSContext* aCx, ReadableStreamType aArgument, JS::MutableHandle aValue) { MOZ_ASSERT(uint32_t(aArgument) < std::size(binding_detail::EnumStrings::Values)); JSString* resultStr = JS_NewStringCopyN(aCx, binding_detail::EnumStrings::Values[uint32_t(aArgument)].BeginReading(), binding_detail::EnumStrings::Values[uint32_t(aArgument)].Length()); if (!resultStr) { return false; } aValue.setString(resultStr); return true; } void ImplCycleCollectionTraverse(nsCycleCollectionTraversalCallback& aCallback, OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader& aUnion, const char* aName, uint32_t aFlags) { if (aUnion.IsReadableStreamDefaultReader()) { ImplCycleCollectionTraverse(aCallback, aUnion.GetAsReadableStreamDefaultReader(), "mReadableStreamDefaultReader", aFlags); } else if (aUnion.IsReadableStreamBYOBReader()) { ImplCycleCollectionTraverse(aCallback, aUnion.GetAsReadableStreamBYOBReader(), "mReadableStreamBYOBReader", aFlags); } } void ImplCycleCollectionUnlink(OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader& aUnion) { aUnion.Uninit(); } bool ReadableStreamDefaultReaderOrReadableStreamBYOBReader::TrySetToReadableStreamDefaultReader(BindingCallContext& cx, JS::Handle value, bool& tryNext, bool passedToJSImpl) { tryNext = false; { // scope for memberSlot NonNull& memberSlot = RawSetAsReadableStreamDefaultReader(); { // Our JSContext should be in the right global to do unwrapping in. nsresult rv = UnwrapObject(value, memberSlot, cx); if (NS_FAILED(rv)) { DestroyReadableStreamDefaultReader(); tryNext = true; return true; } } } return true; } bool ReadableStreamDefaultReaderOrReadableStreamBYOBReader::TrySetToReadableStreamDefaultReader(JSContext* cx_, JS::Handle value, bool& tryNext, bool passedToJSImpl) { BindingCallContext cx(cx_, nullptr); return TrySetToReadableStreamDefaultReader(cx, value, tryNext, passedToJSImpl); } bool ReadableStreamDefaultReaderOrReadableStreamBYOBReader::TrySetToReadableStreamBYOBReader(BindingCallContext& cx, JS::Handle value, bool& tryNext, bool passedToJSImpl) { tryNext = false; { // scope for memberSlot NonNull& memberSlot = RawSetAsReadableStreamBYOBReader(); { // Our JSContext should be in the right global to do unwrapping in. nsresult rv = UnwrapObject(value, memberSlot, cx); if (NS_FAILED(rv)) { DestroyReadableStreamBYOBReader(); tryNext = true; return true; } } } return true; } bool ReadableStreamDefaultReaderOrReadableStreamBYOBReader::TrySetToReadableStreamBYOBReader(JSContext* cx_, JS::Handle value, bool& tryNext, bool passedToJSImpl) { BindingCallContext cx(cx_, nullptr); return TrySetToReadableStreamBYOBReader(cx, value, tryNext, passedToJSImpl); } bool ReadableStreamDefaultReaderOrReadableStreamBYOBReader::Init(BindingCallContext& cx, JS::Handle value, const char* sourceDescription, bool passedToJSImpl) { MOZ_ASSERT(mType == eUninitialized); bool done = false, failed = false, tryNext; if (value.isObject()) { done = (failed = !TrySetToReadableStreamDefaultReader(cx, value, tryNext, passedToJSImpl)) || !tryNext || (failed = !TrySetToReadableStreamBYOBReader(cx, value, tryNext, passedToJSImpl)) || !tryNext; } if (failed) { return false; } if (!done) { cx.ThrowErrorMessage(sourceDescription, "ReadableStreamDefaultReader, ReadableStreamBYOBReader"); return false; } return true; } bool ReadableStreamDefaultReaderOrReadableStreamBYOBReader::Init(JSContext* cx_, JS::Handle value, const char* sourceDescription, bool passedToJSImpl) { BindingCallContext cx(cx_, nullptr); return Init(cx, value, sourceDescription, passedToJSImpl); } bool ReadableStreamDefaultReaderOrReadableStreamBYOBReader::ToJSVal(JSContext* cx, JS::Handle scopeObj, JS::MutableHandle rval) const { switch (mType) { case eUninitialized: { return false; } case eReadableStreamDefaultReader: { if (!GetOrCreateDOMReflector(cx, mValue.mReadableStreamDefaultReader.Value(), rval)) { MOZ_ASSERT(JS_IsExceptionPending(cx)); return false; } return true; } case eReadableStreamBYOBReader: { if (!GetOrCreateDOMReflector(cx, mValue.mReadableStreamBYOBReader.Value(), rval)) { MOZ_ASSERT(JS_IsExceptionPending(cx)); return false; } return true; } default: { return false; } } } OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader(OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader&& aOther) : mType(eUninitialized) { switch (aOther.mType) { case eUninitialized: { MOZ_ASSERT(mType == eUninitialized, "We need to destroy ourselves?"); break; } case eReadableStreamDefaultReader: { mType = eReadableStreamDefaultReader; mValue.mReadableStreamDefaultReader.SetValue(std::move(aOther.mValue.mReadableStreamDefaultReader.Value())); break; } case eReadableStreamBYOBReader: { mType = eReadableStreamBYOBReader; mValue.mReadableStreamBYOBReader.SetValue(std::move(aOther.mValue.mReadableStreamBYOBReader.Value())); break; } } } bool OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::TrySetToReadableStreamDefaultReader(BindingCallContext& cx, JS::Handle value, bool& tryNext, bool passedToJSImpl) { tryNext = false; { // scope for memberSlot OwningNonNull& memberSlot = RawSetAsReadableStreamDefaultReader(); static_assert(IsRefcounted::value, "We can only store refcounted classes."); { // Our JSContext should be in the right global to do unwrapping in. nsresult rv = UnwrapObject(value, memberSlot, cx); if (NS_FAILED(rv)) { DestroyReadableStreamDefaultReader(); tryNext = true; return true; } } } return true; } bool OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::TrySetToReadableStreamDefaultReader(JSContext* cx_, JS::Handle value, bool& tryNext, bool passedToJSImpl) { BindingCallContext cx(cx_, nullptr); return TrySetToReadableStreamDefaultReader(cx, value, tryNext, passedToJSImpl); } [[nodiscard]] OwningNonNull& OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::RawSetAsReadableStreamDefaultReader() { if (mType == eReadableStreamDefaultReader) { return mValue.mReadableStreamDefaultReader.Value(); } MOZ_ASSERT(mType == eUninitialized); mType = eReadableStreamDefaultReader; return mValue.mReadableStreamDefaultReader.SetValue(); } [[nodiscard]] OwningNonNull& OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::SetAsReadableStreamDefaultReader() { if (mType == eReadableStreamDefaultReader) { return mValue.mReadableStreamDefaultReader.Value(); } Uninit(); mType = eReadableStreamDefaultReader; return mValue.mReadableStreamDefaultReader.SetValue(); } void OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::DestroyReadableStreamDefaultReader() { MOZ_RELEASE_ASSERT(IsReadableStreamDefaultReader(), "Wrong type!"); mValue.mReadableStreamDefaultReader.Destroy(); mType = eUninitialized; } bool OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::TrySetToReadableStreamBYOBReader(BindingCallContext& cx, JS::Handle value, bool& tryNext, bool passedToJSImpl) { tryNext = false; { // scope for memberSlot OwningNonNull& memberSlot = RawSetAsReadableStreamBYOBReader(); static_assert(IsRefcounted::value, "We can only store refcounted classes."); { // Our JSContext should be in the right global to do unwrapping in. nsresult rv = UnwrapObject(value, memberSlot, cx); if (NS_FAILED(rv)) { DestroyReadableStreamBYOBReader(); tryNext = true; return true; } } } return true; } bool OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::TrySetToReadableStreamBYOBReader(JSContext* cx_, JS::Handle value, bool& tryNext, bool passedToJSImpl) { BindingCallContext cx(cx_, nullptr); return TrySetToReadableStreamBYOBReader(cx, value, tryNext, passedToJSImpl); } [[nodiscard]] OwningNonNull& OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::RawSetAsReadableStreamBYOBReader() { if (mType == eReadableStreamBYOBReader) { return mValue.mReadableStreamBYOBReader.Value(); } MOZ_ASSERT(mType == eUninitialized); mType = eReadableStreamBYOBReader; return mValue.mReadableStreamBYOBReader.SetValue(); } [[nodiscard]] OwningNonNull& OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::SetAsReadableStreamBYOBReader() { if (mType == eReadableStreamBYOBReader) { return mValue.mReadableStreamBYOBReader.Value(); } Uninit(); mType = eReadableStreamBYOBReader; return mValue.mReadableStreamBYOBReader.SetValue(); } void OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::DestroyReadableStreamBYOBReader() { MOZ_RELEASE_ASSERT(IsReadableStreamBYOBReader(), "Wrong type!"); mValue.mReadableStreamBYOBReader.Destroy(); mType = eUninitialized; } bool OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::Init(BindingCallContext& cx, JS::Handle value, const char* sourceDescription, bool passedToJSImpl) { MOZ_ASSERT(mType == eUninitialized); bool done = false, failed = false, tryNext; if (value.isObject()) { done = (failed = !TrySetToReadableStreamDefaultReader(cx, value, tryNext, passedToJSImpl)) || !tryNext || (failed = !TrySetToReadableStreamBYOBReader(cx, value, tryNext, passedToJSImpl)) || !tryNext; } if (failed) { return false; } if (!done) { cx.ThrowErrorMessage(sourceDescription, "ReadableStreamDefaultReader, ReadableStreamBYOBReader"); return false; } return true; } bool OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::Init(JSContext* cx_, JS::Handle value, const char* sourceDescription, bool passedToJSImpl) { BindingCallContext cx(cx_, nullptr); return Init(cx, value, sourceDescription, passedToJSImpl); } void OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::Uninit() { switch (mType) { case eUninitialized: { break; } case eReadableStreamDefaultReader: { DestroyReadableStreamDefaultReader(); break; } case eReadableStreamBYOBReader: { DestroyReadableStreamBYOBReader(); break; } } } bool OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::ToJSVal(JSContext* cx, JS::Handle scopeObj, JS::MutableHandle rval) const { switch (mType) { case eUninitialized: { return false; } case eReadableStreamDefaultReader: { if (!GetOrCreateDOMReflector(cx, mValue.mReadableStreamDefaultReader.Value(), rval)) { MOZ_ASSERT(JS_IsExceptionPending(cx)); return false; } return true; } case eReadableStreamBYOBReader: { if (!GetOrCreateDOMReflector(cx, mValue.mReadableStreamBYOBReader.Value(), rval)) { MOZ_ASSERT(JS_IsExceptionPending(cx)); return false; } return true; } default: { return false; } } } OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader& OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::operator=(OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader&& aOther) { this->~OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader(); new (this) OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader (std::move(aOther)); return *this; } OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader& OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader::operator=(const OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader& aOther) { switch (aOther.mType) { case eUninitialized: { MOZ_ASSERT(mType == eUninitialized, "We need to destroy ourselves?"); break; } case eReadableStreamDefaultReader: { SetAsReadableStreamDefaultReader() = aOther.GetAsReadableStreamDefaultReader(); break; } case eReadableStreamBYOBReader: { SetAsReadableStreamBYOBReader() = aOther.GetAsReadableStreamBYOBReader(); break; } } return *this; } ReadableStreamReadResult::ReadableStreamReadResult() { // Safe to pass a null context if we pass a null value Init(); } bool ReadableStreamReadResult::InitIds(JSContext* cx, ReadableStreamReadResultAtoms* atomsCache) { MOZ_ASSERT(reinterpret_cast(atomsCache)->isVoid()); // Initialize these in reverse order so that any failure leaves the first one // uninitialized. if (!atomsCache->value_id.init(cx, "value") || !atomsCache->done_id.init(cx, "done")) { return false; } return true; } bool ReadableStreamReadResult::Init(const char* sourceDescription, bool passedToJSImpl) { { // scope for any temporaries our default value setting needs. mValue = JS::UndefinedValue(); } return true; } bool ReadableStreamReadResult::ToObjectInternal(JSContext* cx, JS::MutableHandle rval) const { ReadableStreamReadResultAtoms* atomsCache = GetAtomCache(cx); if (reinterpret_cast(atomsCache)->isVoid() && !InitIds(cx, atomsCache)) { return false; } JS::Rooted obj(cx, JS_NewPlainObject(cx)); if (!obj) { return false; } rval.setObject(*obj); if (mDone.WasPassed()) { do { // block for our 'break' successCode and scope for 'temp' and 'currentValue' JS::Rooted temp(cx); bool const & currentValue = mDone.InternalValue(); temp.setBoolean(currentValue); if (!JS_DefinePropertyById(cx, obj, atomsCache->done_id, temp, JSPROP_ENUMERATE)) { return false; } break; } while(false); } do { // block for our 'break' successCode and scope for 'temp' and 'currentValue' JS::Rooted temp(cx); JS::Value const & currentValue = mValue; JS::ExposeValueToActiveJS(currentValue); temp.set(currentValue); if (!MaybeWrapValue(cx, &temp)) { return false; } if (!JS_DefinePropertyById(cx, obj, atomsCache->value_id, temp, JSPROP_ENUMERATE)) { return false; } break; } while(false); return true; } void ReadableStreamReadResult::TraceDictionary(JSTracer* trc) { JS::TraceRoot(trc, &mValue, "ReadableStreamReadResult.mValue"); } namespace ReadableStreamDefaultReader_Binding { MOZ_CAN_RUN_SCRIPT static bool read(JSContext* cx, JS::Handle obj, void* void_self, const JSJitMethodCallArgs& args) { AUTO_PROFILER_LABEL_DYNAMIC_FAST( "ReadableStreamDefaultReader", "read", DOM, cx, uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_METHOD) | uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); auto* self = static_cast(void_self); FastErrorResult rv; auto result(StrongOrRawPtr(MOZ_KnownLive(self)->Read(rv))); if (rv.MaybeSetPendingException(cx, "ReadableStreamDefaultReader.read")) [[unlikely]] { return false; } MOZ_ASSERT(!JS_IsExceptionPending(cx)); static_assert(!std::is_pointer_v, "NewObject implies that we need to keep the object alive with a strong reference."); if (!ToJSValue(cx, result, args.rval())) { return false; } return true; } MOZ_CAN_RUN_SCRIPT static bool read_promiseWrapper(JSContext* cx, JS::Handle obj, void* void_self, const JSJitMethodCallArgs& args) { bool ok = read(cx, obj, void_self, args); if (ok) { return true; } return ConvertExceptionToPromise(cx, args.rval()); } static const JSJitInfo read_methodinfo = { { (JSJitGetterOp)read_promiseWrapper }, { prototypes::id::ReadableStreamDefaultReader }, { PrototypeTraits::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. */ }; MOZ_CAN_RUN_SCRIPT static bool releaseLock(JSContext* cx, JS::Handle obj, void* void_self, const JSJitMethodCallArgs& args) { AUTO_PROFILER_LABEL_DYNAMIC_FAST( "ReadableStreamDefaultReader", "releaseLock", DOM, cx, uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_METHOD) | uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); auto* self = static_cast(void_self); FastErrorResult rv; // NOTE: This assert does NOT call the function. static_assert(std::is_void_vReleaseLock(rv))>, "Should be returning void here"); MOZ_KnownLive(self)->ReleaseLock(rv); if (rv.MaybeSetPendingException(cx, "ReadableStreamDefaultReader.releaseLock")) [[unlikely]] { return false; } MOZ_ASSERT(!JS_IsExceptionPending(cx)); args.rval().setUndefined(); return true; } static const JSJitInfo releaseLock_methodinfo = { { (JSJitGetterOp)releaseLock }, { prototypes::id::ReadableStreamDefaultReader }, { PrototypeTraits::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. */ }; MOZ_CAN_RUN_SCRIPT static bool get_closed(JSContext* cx, JS::Handle obj, void* void_self, JSJitGetterCallArgs args) { AUTO_PROFILER_LABEL_DYNAMIC_FAST( "ReadableStreamDefaultReader", "closed", DOM, cx, uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_GETTER) | uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); auto* self = static_cast(void_self); auto result(StrongOrRawPtr(MOZ_KnownLive(self)->Closed())); MOZ_ASSERT(!JS_IsExceptionPending(cx)); if (!ToJSValue(cx, result, args.rval())) { return false; } return true; } MOZ_CAN_RUN_SCRIPT static bool get_closed_promiseWrapper(JSContext* cx, JS::Handle obj, void* void_self, JSJitGetterCallArgs args) { bool ok = get_closed(cx, obj, void_self, args); if (ok) { return true; } return ConvertExceptionToPromise(cx, args.rval()); } static const JSJitInfo closed_getterinfo = { { get_closed_promiseWrapper }, { prototypes::id::ReadableStreamDefaultReader }, { PrototypeTraits::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. */ }; MOZ_CAN_RUN_SCRIPT static bool cancel(JSContext* cx, JS::Handle obj, void* void_self, const JSJitMethodCallArgs& args) { AUTO_PROFILER_LABEL_DYNAMIC_FAST( "ReadableStreamDefaultReader", "cancel", DOM, cx, uint32_t(js::ProfilingStackFrame::Flags::STRING_TEMPLATE_METHOD) | uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); auto* self = static_cast(void_self); JS::Rooted arg0(cx); if (args.hasDefined(0)) { arg0 = args[0]; } else { arg0 = JS::UndefinedValue(); } FastErrorResult rv; auto result(StrongOrRawPtr(MOZ_KnownLive(self)->Cancel(cx, arg0, rv))); if (rv.MaybeSetPendingException(cx, "ReadableStreamDefaultReader.cancel")) [[unlikely]] { return false; } MOZ_ASSERT(!JS_IsExceptionPending(cx)); static_assert(!std::is_pointer_v, "NewObject implies that we need to keep the object alive with a strong reference."); if (!ToJSValue(cx, result, args.rval())) { return false; } return true; } MOZ_CAN_RUN_SCRIPT static bool cancel_promiseWrapper(JSContext* cx, JS::Handle obj, void* void_self, const JSJitMethodCallArgs& args) { bool ok = cancel(cx, obj, void_self, args); if (ok) { return true; } return ConvertExceptionToPromise(cx, args.rval()); } static const JSJitInfo cancel_methodinfo = { { (JSJitGetterOp)cancel_promiseWrapper }, { prototypes::id::ReadableStreamDefaultReader }, { PrototypeTraits::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 void _finalize(JS::GCContext* gcx, JSObject* obj) { mozilla::dom::ReadableStreamDefaultReader* self = UnwrapPossiblyNotInitializedDOMObject(obj); if (self) { JS::SetNativeObjectReservedSlot(obj, DOM_OBJECT_SLOT, JS::UndefinedValue()); ClearWrapper(self, self, obj); if (size_t mallocBytes = BindingJSObjectMallocBytes(self)) { JS::RemoveAssociatedMemory(obj, mallocBytes, JS::MemoryUse::DOMBinding); } AddForDeferredFinalization(self); } } MOZ_GLOBINIT static const JSFunctionSpec sMethods_specs[] = { JS_FNSPEC("read", (GenericMethod), reinterpret_cast(&read_methodinfo), 0, JSPROP_ENUMERATE, nullptr), JS_FNSPEC("releaseLock", (GenericMethod), reinterpret_cast(&releaseLock_methodinfo), 0, JSPROP_ENUMERATE, nullptr), JS_FNSPEC("cancel", (GenericMethod), reinterpret_cast(&cancel_methodinfo), 0, JSPROP_ENUMERATE, nullptr), JS_FS_END }; static const Prefable 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(3 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX, "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)"); MOZ_GLOBINIT static const JSPropertySpec sAttributes_specs[] = { JSPropertySpec::nativeAccessors("closed", JSPROP_ENUMERATE, GenericGetter, &closed_getterinfo, nullptr, nullptr), JS_PS_END }; static const Prefable 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[4]; static PropertyInfo sNativeProperties_propertyInfos[4]; static const NativePropertiesN<2> sNativeProperties = { false, 0, false, 0, true, 0 /* sMethods */, true, 1 /* sAttributes */, false, 0, false, 0, false, 0, -1, 4, sNativeProperties_sortedPropertyIndices, { { sMethods, &sNativeProperties_propertyInfos[0] }, { sAttributes, &sNativeProperties_propertyInfos[3] } } }; static_assert(4 < 1ull << (CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount)), "We have a property info count that is oversized"); bool sNativePropertiesInited = false; const NativePropertyHooks sNativePropertyHooks = { nullptr, { sNativeProperties.Upcast(), nullptr, &sNativePropertiesInited }, prototypes::id::ReadableStreamDefaultReader, constructors::id::ReadableStreamDefaultReader, &DefaultXrayExpandoObjectClass }; static bool _constructor(JSContext* cx_, unsigned argc, JS::Value* vp) { BindingCallContext cx(cx_, "ReadableStreamDefaultReader constructor"); AUTO_PROFILER_LABEL_DYNAMIC_FAST( "ReadableStreamDefaultReader", "constructor", DOM, cx, uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); JS::CallArgs args = JS::CallArgsFromVp(argc, vp); JS::Rooted obj(cx, &args.callee()); if (!args.isConstructing()) { return ThrowConstructorWithoutNew(cx, "ReadableStreamDefaultReader"); } JS::Rooted desiredProto(cx); if (!GetDesiredProto(cx, args, prototypes::id::ReadableStreamDefaultReader, CreateInterfaceObjects, &desiredProto)) { return false; } if (!args.requireAtLeast(cx, "ReadableStreamDefaultReader constructor", 1)) { return false; } GlobalObject global(cx, obj); if (global.Failed()) { return false; } bool objIsXray = xpc::WrapperFactory::IsXrayWrapper(obj); NonNull arg0; if (args[0].isObject()) { { // Our JSContext should be in the right global to do unwrapping in. nsresult rv = UnwrapObject(args[0], arg0, cx); if (NS_FAILED(rv)) { cx.ThrowErrorMessage("Argument 1", "ReadableStream"); return false; } } } else { cx.ThrowErrorMessage("Argument 1"); return false; } Maybe ar; if (objIsXray) { // Since our object is an Xray, we can just CheckedUnwrapStatic: // we know Xrays have no dynamic unwrap behavior. obj = js::CheckedUnwrapStatic(obj); if (!obj) { return false; } ar.emplace(cx, obj); if (!JS_WrapObject(cx, &desiredProto)) { return false; } } FastErrorResult rv; auto result(StrongOrRawPtr(mozilla::dom::ReadableStreamDefaultReader::Constructor(global, MOZ_KnownLive(NonNullHelper(arg0)), rv))); if (rv.MaybeSetPendingException(cx, "ReadableStreamDefaultReader constructor")) [[unlikely]] { return false; } MOZ_ASSERT(!JS_IsExceptionPending(cx)); static_assert(!std::is_pointer_v, "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 DOMInterfaceInfo sInterfaceObjectInfo = { { _constructor, &sNativePropertyHooks }, JS::GetRealmFunctionPrototypeHandle, PrototypeTraits::Depth, prototypes::id::ReadableStreamDefaultReader, true, 1, "ReadableStreamDefaultReader", }; static const DOMIfaceAndProtoJSClass sPrototypeClass = { { "ReadableStreamDefaultReaderPrototype", 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, prototypes::id::ReadableStreamDefaultReader, PrototypeTraits::Depth, &sNativePropertyHooks, JS::GetRealmObjectPrototype }; static JS::Handle GetProtoObjectHandle(JSContext* aCx); static const JSClassOps sClassOps = { nullptr, /* addProperty */ nullptr, /* delProperty */ nullptr, /* enumerate */ nullptr, /* newEnumerate */ nullptr, /* resolve */ nullptr, /* mayResolve */ _finalize, /* finalize */ nullptr, /* call */ nullptr, /* construct */ nullptr, /* trace */ }; static const DOMJSClass sClass = { { "ReadableStreamDefaultReader", JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(1) | JSCLASS_PRESERVES_WRAPPER, &sClassOps, JS_NULL_CLASS_SPEC, &NativeTypeHelpers::sClassExtension, JS_NULL_OBJECT_OPS }, { prototypes::id::ReadableStreamDefaultReader, 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 }, std::is_base_of_v, &sNativePropertyHooks, GetProtoObjectHandle, GetCCParticipant::Get(), nullptr, NativeTypeHelpers::GetWrapperCache }; 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."); bool Wrap(JSContext* aCx, mozilla::dom::ReadableStreamDefaultReader* aObject, nsWrapperCache* aCache, JS::Handle aGivenProto, JS::MutableHandle aReflector) { static_assert(!std::is_base_of_v, "Shouldn't have wrappercached things that are not refcounted."); static_assert(std::is_same_v); 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"); // If the wrapper cache contains a dead reflector then finalize that // now, ensuring that the finalizer for the old reflector always // runs before the new reflector is created and attached. This // avoids the awkward situation where there are multiple reflector // objects that contain pointers to the same native. if (JSObject* oldReflector = aCache->GetWrapperMaybeDead()) { _finalize(nullptr /* unused */, oldReflector); MOZ_ASSERT(!aCache->GetWrapperMaybeDead()); } JS::Rooted global(aCx, FindAssociatedGlobal(aCx, aObject->GetParentObject())); if (!global) { return false; } MOZ_ASSERT(JS_IsGlobalObject(global)); JS::AssertObjectIsNotGray(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 canonicalProto = GetProtoObjectHandle(aCx); if (!canonicalProto) { return false; } JS::Rooted 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::GetCompartment(proto)) { if (!JS_WrapObject(aCx, &proto)) { return false; } } } else { proto = canonicalProto; } BindingJSObjectCreator 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; } void CreateInterfaceObjects(JSContext* aCx, JS::Handle aGlobal, ProtoAndIfaceCache& aProtoAndIfaceCache, DefineInterfaceProperty aDefineOnGlobal) { JS::Heap* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::ReadableStreamDefaultReader); JS::Heap* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::ReadableStreamDefaultReader); JS::Handle parentProto(JS::GetRealmObjectPrototypeHandle(aCx)); if (!parentProto) { return; } JS::Handle constructorProto(JS::GetRealmFunctionPrototypeHandle(aCx)); if (!constructorProto) { return; } dom::CreateInterfaceObjects(aCx, aGlobal, parentProto, &sPrototypeClass, protoCache, constructorProto, &sInterfaceObjectInfo, 1, false, Span{}, interfaceCache, sNativeProperties.Upcast(), nullptr, "ReadableStreamDefaultReader", aDefineOnGlobal != DefineInterfaceProperty::No, nullptr, false, nullptr); } static JS::Handle GetProtoObjectHandle(JSContext* aCx) { /* Get the interface prototype object for this class. This will create the object as needed. */ return GetPerInterfaceObjectHandle(aCx, prototypes::id::ReadableStreamDefaultReader, &CreateInterfaceObjects, DefineInterfaceProperty::CheckExposure); } JS::Handle GetConstructorObjectHandle(JSContext* aCx) { /* Get the interface object for this class. This will create the object as needed. */ return GetPerInterfaceObjectHandle(aCx, constructors::id::ReadableStreamDefaultReader, &CreateInterfaceObjects, DefineInterfaceProperty::CheckExposure); } } // namespace ReadableStreamDefaultReader_Binding } // namespace dom } // namespace mozilla