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 | |
36 | namespace WebCore { |
37 | |
38 | class BufferSource; |
39 | class ReadableStream; |
40 | struct ReadableStreamChunk; |
41 | class SharedBuffer; |
42 | |
43 | class ReadableStreamSink : public RefCounted<ReadableStreamSink> { |
44 | public: |
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 | |
52 | class ReadableStreamToSharedBufferSink final : public ReadableStreamSink { |
53 | public: |
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 | |
59 | private: |
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 | |