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Issue #1442 - Part 13 - Implement FetchStreamReader. https://bugzilla.mozilla.org/show_bug.cgi?id=1329298

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Brian Smith 2023-09-28 17:36:52 -05:00 • committed by roytam1
commit ef550b2579
10 changed files with 569 additions and 62 deletions
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77
dom/fetch/FetchStreamReader.h Normal file
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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 http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_FetchStreamReader_h
#define mozilla_dom_FetchStreamReader_h
#include "jsapi.h"
#include "mozilla/dom/FetchBinding.h"
#include "mozilla/dom/PromiseNativeHandler.h"
#include "nsIAsyncOutputStream.h"
namespace mozilla {
namespace dom {
namespace workers {
class WorkerHolder;
}
class FetchStreamReader final : public nsIOutputStreamCallback
, public PromiseNativeHandler
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOUTPUTSTREAMCALLBACK
// This creates a nsIInputStream able to retrieve data from the ReadableStream
// object. The reading starts when StartConsuming() is called.
static nsresult
Create(JSContext* aCx, nsIGlobalObject* aGlobal,
FetchStreamReader** aStreamReader,
nsIInputStream** aInputStream);
void
ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue) override;
void
RejectedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue) override;
void
CloseAndRelease(nsresult aStatus);
void
StartConsuming(JSContext* aCx,
JS::HandleObject aStream,
JS::MutableHandle<JSObject*> aReader,
ErrorResult& aRv);
private:
explicit FetchStreamReader(nsIGlobalObject* aGlobal);
~FetchStreamReader();
nsresult
WriteBuffer();
nsCOMPtr<nsIGlobalObject> mGlobal;
nsCOMPtr<nsIEventTarget> mOwningEventTarget;
nsCOMPtr<nsIAsyncOutputStream> mPipeOut;
UniquePtr<workers::WorkerHolder> mWorkerHolder;
JS::Heap<JSObject*> mReader;
UniquePtr<FetchReadableStreamReadDataArray> mBuffer;
uint32_t mBufferRemaining;
uint32_t mBufferOffset;
bool mStreamClosed;
};
} // dom namespace
} // mozilla namespace
#endif // mozilla_dom_FetchStreamReader_h