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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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