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/* -*- 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_ReadableStreamDefaultController_h
#define mozilla_dom_ReadableStreamDefaultController_h
#include "js/TypeDecls.h"
#include "mozilla/AlreadyAddRefed.h"
#include "mozilla/Attributes.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/dom/Nullable.h"
#include "mozilla/dom/QueueWithSizes.h"
#include "mozilla/dom/QueuingStrategyBinding.h"
#include "mozilla/dom/ReadRequest.h"
#include "mozilla/dom/ReadableStreamControllerBase.h"
#include "mozilla/dom/UnderlyingSourceCallbackHelpers.h"
#include "nsCycleCollectionParticipant.h"
#include "nsIGlobalObject.h"
#include "nsISupports.h"
#include "nsTArray.h"
#include "nsWrapperCache.h"
namespace mozilla::dom {
class ReadableStream;
class ReadableStreamDefaultReader;
struct UnderlyingSource;
class ReadableStreamGenericReader;
class ReadableStreamDefaultController final
: public ReadableStreamControllerBase,
public nsWrapperCache {
public:
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(
ReadableStreamDefaultController, ReadableStreamControllerBase)
public:
explicit ReadableStreamDefaultController(nsIGlobalObject* aGlobal);
protected:
~ReadableStreamDefaultController() override;
public:
bool IsDefault() override { return true; }
bool IsByte() override { return false; }
ReadableStreamDefaultController* AsDefault() override { return this; }
ReadableByteStreamController* AsByte() override { return nullptr; }
JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
Nullable<double> GetDesiredSize();
MOZ_CAN_RUN_SCRIPT void Close(JSContext* aCx, ErrorResult& aRv);
MOZ_CAN_RUN_SCRIPT void Enqueue(JSContext* aCx, JS::Handle<JS::Value> aChunk,
ErrorResult& aRv);
void Error(JSContext* aCx, JS::Handle<JS::Value> aError, ErrorResult& aRv);
MOZ_CAN_RUN_SCRIPT already_AddRefed<Promise> CancelSteps(
JSContext* aCx, JS::Handle<JS::Value> aReason, ErrorResult& aRv) override;
MOZ_CAN_RUN_SCRIPT void PullSteps(JSContext* aCx, ReadRequest* aReadRequest,
ErrorResult& aRv) override;
void ReleaseSteps() override;
// Internal Slot Accessors
bool CloseRequested() const { return mCloseRequested; }
void SetCloseRequested(bool aCloseRequested) {
mCloseRequested = aCloseRequested;
}
bool PullAgain() const { return mPullAgain; }
void SetPullAgain(bool aPullAgain) { mPullAgain = aPullAgain; }
bool Pulling() const { return mPulling; }
void SetPulling(bool aPulling) { mPulling = aPulling; }
QueueWithSizes& Queue() { return mQueue; }
double QueueTotalSize() const { return mQueueTotalSize; }
void SetQueueTotalSize(double aQueueTotalSize) {
mQueueTotalSize = aQueueTotalSize;
}
bool Started() const { return mStarted; }
void SetStarted(bool aStarted) { mStarted = aStarted; }
double StrategyHWM() const { return mStrategyHWM; }
void SetStrategyHWM(double aStrategyHWM) { mStrategyHWM = aStrategyHWM; }
QueuingStrategySize* StrategySizeAlgorithm() const {
return mStrategySizeAlgorithm;
}
void setStrategySizeAlgorithm(QueuingStrategySize* aStrategySizeAlgorithm) {
mStrategySizeAlgorithm = aStrategySizeAlgorithm;
}
private:
// Internal Slots:
bool mCloseRequested = false;
bool mPullAgain = false;
bool mPulling = false;
QueueWithSizes mQueue = {};
double mQueueTotalSize = 0.0;
bool mStarted = false;
double mStrategyHWM = false;
RefPtr<QueuingStrategySize> mStrategySizeAlgorithm;
};
namespace streams_abstract {
MOZ_CAN_RUN_SCRIPT void SetUpReadableStreamDefaultController(
JSContext* aCx, ReadableStream* aStream,
ReadableStreamDefaultController* aController,
UnderlyingSourceAlgorithmsBase* aAlgorithms, double aHighWaterMark,
QueuingStrategySize* aSizeAlgorithm, ErrorResult& aRv);
MOZ_CAN_RUN_SCRIPT void
SetupReadableStreamDefaultControllerFromUnderlyingSource(
JSContext* aCx, ReadableStream* aStream,
JS::Handle<JSObject*> aUnderlyingSource,
UnderlyingSource& aUnderlyingSourceDict, double aHighWaterMark,
QueuingStrategySize* aSizeAlgorithm, ErrorResult& aRv);
MOZ_CAN_RUN_SCRIPT void ReadableStreamDefaultControllerEnqueue(
JSContext* aCx, ReadableStreamDefaultController* aController,
JS::Handle<JS::Value> aChunk, ErrorResult& aRv);
MOZ_CAN_RUN_SCRIPT void ReadableStreamDefaultControllerClose(
JSContext* aCx, ReadableStreamDefaultController* aController,
ErrorResult& aRv);
MOZ_CAN_RUN_SCRIPT void ReadableStreamDefaultReaderRead(
JSContext* aCx, ReadableStreamGenericReader* reader, ReadRequest* aRequest,
ErrorResult& aRv);
void ReadableStreamDefaultControllerError(
JSContext* aCx, ReadableStreamDefaultController* aController,
JS::Handle<JS::Value> aValue, ErrorResult& aRv);
Nullable<double> ReadableStreamDefaultControllerGetDesiredSize(
ReadableStreamDefaultController* aController);
enum class CloseOrEnqueue { Close, Enqueue };
bool ReadableStreamDefaultControllerCanCloseOrEnqueueAndThrow(
ReadableStreamDefaultController* aController,
CloseOrEnqueue aCloseOrEnqueue, ErrorResult& aRv);
bool ReadableStreamDefaultControllerShouldCallPull(
ReadableStreamDefaultController* aController);
} // namespace streams_abstract
} // namespace mozilla::dom
#endif // mozilla_dom_ReadableStreamDefaultController_h
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