зеркало из https://github.com/mozilla/gecko-dev.git
92 строки
3.2 KiB
C++
92 строки
3.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim:set ts=2 sw=2 sts=2 et cindent: */
|
|
/* 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 http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef mozilla_dom_ReadableStreamTee_h
|
|
#define mozilla_dom_ReadableStreamTee_h
|
|
|
|
#include "mozilla/dom/ReadRequest.h"
|
|
#include "mozilla/dom/ReadableStreamController.h"
|
|
#include "mozilla/dom/UnderlyingSourceCallbackHelpers.h"
|
|
#include "nsCycleCollectionParticipant.h"
|
|
#include "nsISupportsImpl.h"
|
|
|
|
namespace mozilla::dom {
|
|
struct TeeState;
|
|
enum class TeeBranch : bool;
|
|
class ReadableStream;
|
|
|
|
// Implementation of the Pull algorithm steps for ReadableStreamDefaultTee,
|
|
// from
|
|
// https://streams.spec.whatwg.org/#abstract-opdef-readablestreamdefaulttee
|
|
// Step 12.
|
|
class ReadableStreamDefaultTeeSourceAlgorithms final
|
|
: public UnderlyingSourceAlgorithmsBase {
|
|
public:
|
|
NS_DECL_ISUPPORTS_INHERITED
|
|
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(
|
|
ReadableStreamDefaultTeeSourceAlgorithms, UnderlyingSourceAlgorithmsBase)
|
|
|
|
ReadableStreamDefaultTeeSourceAlgorithms(TeeState* aTeeState,
|
|
TeeBranch aBranch)
|
|
: mTeeState(aTeeState), mBranch(aBranch) {}
|
|
|
|
MOZ_CAN_RUN_SCRIPT void StartCallback(JSContext* aCx,
|
|
ReadableStreamController& aController,
|
|
JS::MutableHandle<JS::Value> aRetVal,
|
|
ErrorResult& aRv) override {
|
|
aRetVal.setUndefined();
|
|
}
|
|
|
|
MOZ_CAN_RUN_SCRIPT already_AddRefed<Promise> PullCallback(
|
|
JSContext* aCx, ReadableStreamController& aController,
|
|
ErrorResult& aRv) override;
|
|
|
|
MOZ_CAN_RUN_SCRIPT already_AddRefed<Promise> CancelCallback(
|
|
JSContext* aCx, const Optional<JS::Handle<JS::Value>>& aReason,
|
|
ErrorResult& aRv) override;
|
|
|
|
protected:
|
|
~ReadableStreamDefaultTeeSourceAlgorithms() override = default;
|
|
|
|
private:
|
|
// Virtually const, but is cycle collected
|
|
MOZ_KNOWN_LIVE RefPtr<TeeState> mTeeState;
|
|
TeeBranch mBranch;
|
|
};
|
|
|
|
// https://streams.spec.whatwg.org/#abstract-opdef-readablestreamdefaulttee
|
|
// Step 12.3
|
|
struct ReadableStreamDefaultTeeReadRequest final : public ReadRequest {
|
|
NS_DECL_ISUPPORTS_INHERITED
|
|
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ReadableStreamDefaultTeeReadRequest,
|
|
ReadRequest)
|
|
|
|
RefPtr<TeeState> mTeeState;
|
|
|
|
explicit ReadableStreamDefaultTeeReadRequest(TeeState* aTeeState)
|
|
: mTeeState(aTeeState) {}
|
|
|
|
void ChunkSteps(JSContext* aCx, JS::Handle<JS::Value> aChunk,
|
|
ErrorResult& aRv) override;
|
|
|
|
MOZ_CAN_RUN_SCRIPT void CloseSteps(JSContext* aCx, ErrorResult& aRv) override;
|
|
|
|
void ErrorSteps(JSContext* aCx, JS::Handle<JS::Value> aError,
|
|
ErrorResult& aRv) override;
|
|
|
|
protected:
|
|
~ReadableStreamDefaultTeeReadRequest() override = default;
|
|
};
|
|
|
|
namespace streams_abstract {
|
|
MOZ_CAN_RUN_SCRIPT void ReadableByteStreamTee(
|
|
JSContext* aCx, ReadableStream* aStream,
|
|
nsTArray<RefPtr<ReadableStream>>& aResult, ErrorResult& aRv);
|
|
}
|
|
|
|
} // namespace mozilla::dom
|
|
#endif
|