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Issue 1400473008: Roll Observatory packages and add a roll script (Closed) Base URL: git@github.com:dart-lang/observatory_pub_packages.git@master
Patch Set: Created 5 years, 2 months ago
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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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