/* * Copyright (C) 2017 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are 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. * * THIS SOFTWARE IS PROVIDED BY APPLE 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 APPLE INC. OR 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 #if ENABLE(STREAMS_API) #include "ExceptionOr.h" #include "ReadableStreamChunk.h" #include <wtf/Function.h> #include <wtf/RefCounted.h> namespace WebCore { class BufferSource; class ReadableStream; struct ReadableStreamChunk; class SharedBuffer; class ReadableStreamSink : public RefCounted<ReadableStreamSink> { public: virtual ~ReadableStreamSink() = default; virtual void enqueue(const BufferSource&) = 0; virtual void close() = 0; virtual void error(String&&) = 0; }; class ReadableStreamToSharedBufferSink final : public ReadableStreamSink { public: using Callback = WTF::Function<void(ExceptionOr<ReadableStreamChunk*>&&)>; static Ref<ReadableStreamToSharedBufferSink> create(Callback&& callback) { return adoptRef(*new ReadableStreamToSharedBufferSink(WTFMove(callback))); } void pipeFrom(ReadableStream&); void clearCallback() { m_callback = { }; } private: explicit ReadableStreamToSharedBufferSink(Callback&&); void enqueue(const BufferSource&) final; void close() final; void error(String&&) final; Callback m_callback; }; } // namespace WebCore #endif // ENABLE(STREAMS_API)