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/*
* Copyright (C) 2016 Canon Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted, provided that the following conditions
* are required to be met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Canon Inc. nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY CANON INC. AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL CANON INC. AND ITS CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "JSDOMPromiseDeferredForward.h"
#include "ReadableStreamDefaultController.h"
#include <wtf/AbstractRefCounted.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class ReadableStreamSource : public AbstractRefCounted {
public:
WEBCORE_EXPORT ReadableStreamSource();
WEBCORE_EXPORT virtual ~ReadableStreamSource();
void start(ReadableStreamDefaultController&&, DOMPromiseDeferred<void>&&);
void pull(DOMPromiseDeferred<void>&&);
void cancel(JSC::JSValue);
bool isPulling() const { return !!m_promise; }
protected:
ReadableStreamDefaultController& controller() { return m_controller.value(); }
const ReadableStreamDefaultController& controller() const { return m_controller.value(); }
void startFinished();
void pullFinished();
void cancelFinished();
WEBCORE_EXPORT void clean();
virtual void setActive() = 0;
virtual void setInactive() = 0;
virtual void doStart() = 0;
virtual void doPull() = 0;
virtual void doCancel() = 0;
private:
std::unique_ptr<DOMPromiseDeferred<void>> m_promise;
std::optional<ReadableStreamDefaultController> m_controller;
};
class RefCountedReadableStreamSource
: public ReadableStreamSource
, public RefCounted<RefCountedReadableStreamSource> {
public:
void ref() const final { RefCounted::ref(); }
void deref() const final { RefCounted::deref(); }
};
class SimpleReadableStreamSource
: public RefCountedReadableStreamSource
, public CanMakeWeakPtr<SimpleReadableStreamSource> {
public:
static Ref<SimpleReadableStreamSource> create() { return adoptRef(*new SimpleReadableStreamSource); }
void close();
void enqueue(JSC::JSValue);
private:
SimpleReadableStreamSource() = default;
// ReadableStreamSource
void setActive() final { }
void setInactive() final { }
void doStart() final { }
void doPull() final { }
void doCancel() final;
bool m_isCancelled { false };
};
} // namespace WebCore
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