1/*
2 * Copyright (C) 2017 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26
27#pragma once
28
29#if ENABLE(STREAMS_API)
30
31#include "ExceptionOr.h"
32#include "ReadableStreamChunk.h"
33#include <wtf/Function.h>
34#include <wtf/RefCounted.h>
35
36namespace WebCore {
37
38class BufferSource;
39class ReadableStream;
40struct ReadableStreamChunk;
41class SharedBuffer;
42
43class ReadableStreamSink : public RefCounted<ReadableStreamSink> {
44public:
45 virtual ~ReadableStreamSink() = default;
46
47 virtual void enqueue(const BufferSource&) = 0;
48 virtual void close() = 0;
49 virtual void error(String&&) = 0;
50};
51
52class ReadableStreamToSharedBufferSink final : public ReadableStreamSink {
53public:
54 using Callback = WTF::Function<void(ExceptionOr<ReadableStreamChunk*>&&)>;
55 static Ref<ReadableStreamToSharedBufferSink> create(Callback&& callback) { return adoptRef(*new ReadableStreamToSharedBufferSink(WTFMove(callback))); }
56 void pipeFrom(ReadableStream&);
57 void clearCallback() { m_callback = { }; }
58
59private:
60 explicit ReadableStreamToSharedBufferSink(Callback&&);
61
62 void enqueue(const BufferSource&) final;
63 void close() final;
64 void error(String&&) final;
65
66 Callback m_callback;
67};
68
69} // namespace WebCore
70
71#endif // ENABLE(STREAMS_API)
72