tor-browser

The Tor Browser
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ReadableStreamGenericReader.h (2477B)

      1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef mozilla_dom_ReadableStreamGenericReader_h
      8 #define mozilla_dom_ReadableStreamGenericReader_h
      9 
     10 #include "mozilla/dom/Promise.h"
     11 #include "mozilla/dom/ReadableStreamDefaultReaderBinding.h"
     12 #include "nsCycleCollectionParticipant.h"
     13 #include "nsISupports.h"
     14 
     15 namespace mozilla::dom {
     16 
     17 class ReadableStream;
     18 class ReadableStreamDefaultReader;
     19 class ReadableStreamBYOBReader;
     20 
     21 // Base class for internal slots of readable stream readers
     22 class ReadableStreamGenericReader : public nsISupports {
     23 public:
     24  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
     25  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(ReadableStreamGenericReader)
     26 
     27  explicit ReadableStreamGenericReader(nsCOMPtr<nsIGlobalObject> aGlobal)
     28      : mGlobal(std::move(aGlobal)) {}
     29 
     30  nsIGlobalObject* GetParentObject() const { return mGlobal; }
     31 
     32  virtual bool IsDefault() = 0;
     33  virtual bool IsBYOB() = 0;
     34  virtual ReadableStreamDefaultReader* AsDefault() = 0;
     35  virtual ReadableStreamBYOBReader* AsBYOB() = 0;
     36 
     37  Promise* ClosedPromise() { return mClosedPromise; }
     38  void SetClosedPromise(already_AddRefed<Promise>&& aClosedPromise) {
     39    mClosedPromise = aClosedPromise;
     40  }
     41 
     42  ReadableStream* GetStream() { return mStream; }
     43  void SetStream(already_AddRefed<ReadableStream>&& aStream) {
     44    mStream = aStream;
     45  }
     46  void SetStream(ReadableStream* aStream) {
     47    RefPtr<ReadableStream> stream(aStream);
     48    SetStream(stream.forget());
     49  }
     50 
     51  // IDL Methods
     52  already_AddRefed<Promise> Closed() const;
     53 
     54  MOZ_CAN_RUN_SCRIPT already_AddRefed<Promise> Cancel(
     55      JSContext* aCx, JS::Handle<JS::Value> aReason, ErrorResult& aRv);
     56 
     57 protected:
     58  virtual ~ReadableStreamGenericReader() = default;
     59 
     60  nsCOMPtr<nsIGlobalObject> mGlobal;
     61  RefPtr<Promise> mClosedPromise;
     62  RefPtr<ReadableStream> mStream;
     63 };
     64 
     65 namespace streams_abstract {
     66 
     67 bool ReadableStreamReaderGenericInitialize(ReadableStreamGenericReader* aReader,
     68                                           ReadableStream* aStream);
     69 
     70 void ReadableStreamReaderGenericRelease(ReadableStreamGenericReader* aReader,
     71                                        ErrorResult& aRv);
     72 
     73 }  // namespace streams_abstract
     74 
     75 }  // namespace mozilla::dom
     76 
     77 #endif