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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 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. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 part of dart.async; | 5 part of dart.async; |
6 | 6 |
7 typedef void _CollectionSinkCallback<T>(Collection<T> collection); | 7 typedef void _CollectionSinkCallback<T>(Collection<T> collection); |
8 typedef void _CollectionSinkErrorCallback(AsyncError error); | 8 typedef void _CollectionSinkErrorCallback(AsyncError error); |
9 | 9 |
10 /** StreamSink that stores incoming data in a collection. */ | 10 /** EventSink that stores incoming data in a collection. */ |
11 class CollectionSink<T> implements StreamSink<T> { | 11 class CollectionSink<T> implements EventSink<T> { |
12 final Collection<T> collection; | 12 final Collection<T> collection; |
13 final _CollectionSinkCallback<T> _callback; | 13 final _CollectionSinkCallback<T> _callback; |
14 final _CollectionSinkErrorCallback _errorCallback; | 14 final _CollectionSinkErrorCallback _errorCallback; |
15 bool _isClosed = false; | 15 bool _isClosed = false; |
16 | 16 |
17 /** | 17 /** |
18 * Create a sink that stores incoming values in a collection. | 18 * Create a sink that stores incoming values in a collection. |
19 * | 19 * |
20 * The [collection] is the collection to add the values to. | 20 * The [collection] is the collection to add the values to. |
21 * | 21 * |
22 * If [callback] is provided, then it's called with the collection as arugment | 22 * If [callback] is provided, then it's called with the collection as arugment |
23 * when the sink's [close] method is called. | 23 * when the sink's [close] method is called. |
24 */ | 24 */ |
25 CollectionSink(this.collection, | 25 CollectionSink(this.collection, |
26 { void onClose(Collection<T> collection), | 26 { void onClose(Collection<T> collection), |
27 void onError(AsyncError error) }) | 27 void onError(AsyncError error) }) |
28 : this._callback = onClose, | 28 : this._callback = onClose, |
29 this._errorCallback = onError; | 29 this._errorCallback = onError; |
30 | 30 |
31 add(T value) { | 31 add(T value) { |
32 if (_isClosed) throw new StateError("Adding to closed sink"); | 32 if (_isClosed) throw new StateError("Adding to closed sink"); |
33 collection.add(value); | 33 collection.add(value); |
34 } | 34 } |
35 | 35 |
36 void signalError(AsyncError error) { | 36 void addError(AsyncError error) { |
37 if (_isClosed) throw new StateError("Singalling error on closed sink"); | 37 if (_isClosed) throw new StateError("Singalling error on closed sink"); |
floitsch
2013/03/07 14:19:34
Signalling
Lasse Reichstein Nielsen
2013/03/08 10:18:25
Reworded to say "Adding".
| |
38 if (_errorCallback != null) _errorCallback(error); | 38 if (_errorCallback != null) _errorCallback(error); |
39 } | 39 } |
40 | 40 |
41 void signalError(AsyncError error) { | |
42 addError(error); | |
43 } | |
44 | |
41 void close() { | 45 void close() { |
42 if (_isClosed) throw new StateError("Closing closed sink"); | 46 if (_isClosed) throw new StateError("Closing closed sink"); |
43 _isClosed = true; | 47 _isClosed = true; |
44 if (_callback != null) _callback(collection); | 48 if (_callback != null) _callback(collection); |
45 } | 49 } |
46 } | 50 } |
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