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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be | 
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. | 
| 4 | 4 | 
| 5 #ifndef ReadableStreamOperations_h | 5 #ifndef ReadableStreamOperations_h | 
| 6 #define ReadableStreamOperations_h | 6 #define ReadableStreamOperations_h | 
| 7 | 7 | 
| 8 #include "bindings/core/v8/ScriptPromise.h" | 8 #include "bindings/core/v8/ScriptPromise.h" | 
| 9 #include "bindings/core/v8/ScriptValue.h" | 9 #include "bindings/core/v8/ScriptValue.h" | 
| 10 #include <v8.h> | 10 #include <v8.h> | 
| 11 | 11 | 
| 12 namespace blink { | 12 namespace blink { | 
| 13 | 13 | 
| 14 class ExceptionState; | 14 class ExceptionState; | 
| 15 class ScriptState; | 15 class ScriptState; | 
| 16 | 16 | 
| 17 // This class has various methods for ReadableStream[Reader] implemented with | 17 // This class has various methods for ReadableStream[Reader] implemented with | 
| 18 // V8 Extras. | 18 // V8 Extras. | 
| 19 // All methods should be called in an appropriate V8 context. All v8 handle | 19 // All methods should be called in an appropriate V8 context. All ScriptValue | 
| 20 // arguments must not be empty. | 20 // arguments must not be empty. | 
| 21 class CORE_EXPORT ReadableStreamOperations { | 21 class CORE_EXPORT ReadableStreamOperations { | 
| 22     STATIC_ONLY(ReadableStreamOperations); | 22     STATIC_ONLY(ReadableStreamOperations); | 
| 23 public: | 23 public: | 
| 24     // AcquireReadableStreamReader | 24     // AcquireReadableStreamReader | 
| 25     // This function assumes |isReadableStream(stream)|. | 25     // This function assumes |isReadableStream(stream)|. | 
| 26     // Returns an empty value and throws an error via the ExceptionState when | 26     // Returns an empty value and throws an error via the ExceptionState when | 
| 27     // errored. | 27     // errored. | 
| 28     static ScriptValue getReader(ScriptState*, v8::Local<v8::Value> stream, Exce
    ptionState&); | 28     static ScriptValue getReader(ScriptState*, ScriptValue stream, ExceptionStat
    e&); | 
| 29 | 29 | 
| 30     // IsReadableStream | 30     // IsReadableStream | 
| 31     static bool isReadableStream(ScriptState*, v8::Local<v8::Value>); | 31     static bool isReadableStream(ScriptState*, ScriptValue); | 
| 32 | 32 | 
| 33     // IsReadableStreamDisturbed | 33     // IsReadableStreamDisturbed | 
| 34     // This function assumes |isReadableStream(stream)|. | 34     // This function assumes |isReadableStream(stream)|. | 
| 35     static bool isDisturbed(ScriptState*, v8::Local<v8::Value> stream); | 35     static bool isDisturbed(ScriptState*, ScriptValue stream); | 
| 36 | 36 | 
| 37     // IsReadableStreamLocked | 37     // IsReadableStreamLocked | 
| 38     // This function assumes |isReadableStream(stream)|. | 38     // This function assumes |isReadableStream(stream)|. | 
| 39     static bool isLocked(ScriptState*, v8::Local<v8::Value> stream); | 39     static bool isLocked(ScriptState*, ScriptValue stream); | 
| 40 | 40 | 
| 41     // IsReadableStreamReader | 41     // IsReadableStreamReader | 
| 42     static bool isReadableStreamReader(ScriptState*, v8::Local<v8::Value>); | 42     static bool isReadableStreamReader(ScriptState*, ScriptValue); | 
| 43 | 43 | 
| 44     // ReadFromReadableStreamReader | 44     // ReadFromReadableStreamReader | 
| 45     // This function assumes |isReadableStreamReader(reader)|. | 45     // This function assumes |isReadableStreamReader(reader)|. | 
| 46     static ScriptPromise read(ScriptState*, v8::Local<v8::Value> reader); | 46     static ScriptPromise read(ScriptState*, ScriptValue reader); | 
| 47 }; | 47 }; | 
| 48 | 48 | 
| 49 } // namespace blink | 49 } // namespace blink | 
| 50 | 50 | 
| 51 #endif // ReadableStreamOperations_h | 51 #endif // ReadableStreamOperations_h | 
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