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Side by Side Diff: third_party/WebKit/Source/modules/fetch/ReadableStreamDataConsumerHandle.h

Issue 2365853002: Implement ReadableStreamBytesConsumer (Closed)
Patch Set: fix Created 4 years, 2 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef ReadableStreamDataConsumerHandle_h
6 #define ReadableStreamDataConsumerHandle_h
7
8 #include "bindings/core/v8/ScriptValue.h"
9 #include "modules/ModulesExport.h"
10 #include "modules/fetch/FetchDataConsumerHandle.h"
11 #include "wtf/Forward.h"
12 #include "wtf/PtrUtil.h"
13 #include "wtf/RefPtr.h"
14 #include <memory>
15
16 namespace blink {
17
18 class ScriptState;
19
20 // This class is a FetchDataConsumerHandle pulling bytes from ReadableStream
21 // implemented with V8 Extras.
22 // The stream will be immediately locked by the handle and will never be
23 // released.
24 //
25 // The ReadableStreamReader handle held in a ReadableStreamDataConsumerHandle
26 // is weak. A user must guarantee that the ReadableStreamReader object is kept
27 // alive appropriately.
28 // TODO(yhirano): CURRENTLY THIS HANDLE SUPPORTS READING ONLY FROM THE THREAD ON
29 // WHICH IT IS CREATED. FIX THIS.
30 class MODULES_EXPORT ReadableStreamDataConsumerHandle final : public FetchDataCo nsumerHandle {
31 WTF_MAKE_NONCOPYABLE(ReadableStreamDataConsumerHandle);
32 public:
33 static std::unique_ptr<ReadableStreamDataConsumerHandle> create(ScriptState* scriptState, ScriptValue streamReader)
34 {
35 return wrapUnique(new ReadableStreamDataConsumerHandle(scriptState, stre amReader));
36 }
37 ~ReadableStreamDataConsumerHandle() override;
38
39 std::unique_ptr<Reader> obtainFetchDataReader(Client*) override;
40
41 private:
42 class ReadingContext;
43 ReadableStreamDataConsumerHandle(ScriptState*, ScriptValue streamReader);
44 const char* debugName() const override { return "ReadableStreamDataConsumerH andle"; }
45
46 RefPtr<ReadingContext> m_readingContext;
47 };
48
49 } // namespace blink
50
51 #endif // ReadableStreamDataConsumerHandle_h
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