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| 1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. |
| 4 |
| 5 library async.delegate.stream_consumer; |
| 6 |
| 7 import 'dart:async'; |
| 8 |
| 9 /// Simple delegating wrapper around a [StreamConsumer]. |
| 10 /// |
| 11 /// Subclasses can override individual methods, or use this to expose only the |
| 12 /// [StreamConsumer] methods of a subclass. |
| 13 class DelegatingStreamConsumer<T> implements StreamConsumer<T> { |
| 14 final StreamConsumer _consumer; |
| 15 |
| 16 /// Create a delegating consumer forwarding calls to [consumer]. |
| 17 DelegatingStreamConsumer(StreamConsumer consumer) |
| 18 : _consumer = consumer; |
| 19 |
| 20 Future addStream(Stream<T> stream) => _consumer.addStream(stream); |
| 21 |
| 22 Future close() => _consumer.close(); |
| 23 } |
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