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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at */
/* Stream teeing state. */
#include "builtin/streams/TeeState.h"
#include "builtin/streams/ReadableStream.h" // js::ReadableStream
#include "js/Class.h" // JSClass, JSCLASS_HAS_RESERVED_SLOTS
#include "js/RootingAPI.h" // JS::Handle, JS::Rooted
#include "vm/JSContext.h" // JSContext
#include "vm/PromiseObject.h" // js::PromiseObject
#include "vm/JSObject-inl.h" // js::NewBuiltinClassInstance
using js::ReadableStream;
using js::TeeState;
using JS::Handle;
using JS::Int32Value;
using JS::ObjectValue;
using JS::Rooted;
/* static */ TeeState* TeeState::create(
JSContext* cx, Handle<ReadableStream*> unwrappedStream) {
Rooted<TeeState*> state(cx, NewBuiltinClassInstance<TeeState>(cx));
if (!state) {
return nullptr;
Rooted<PromiseObject*> cancelPromise(
cx, PromiseObject::createSkippingExecutor(cx));
if (!cancelPromise) {
return nullptr;
state->setFixedSlot(Slot_Flags, Int32Value(0));
state->setFixedSlot(Slot_CancelPromise, ObjectValue(*cancelPromise));
Rooted<JSObject*> wrappedStream(cx, unwrappedStream);
if (!cx->compartment()->wrap(cx, &wrappedStream)) {
return nullptr;
state->setFixedSlot(Slot_Stream, JS::ObjectValue(*wrappedStream));
return state;
const JSClass TeeState::class_ = {"TeeState",