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Side by Side Diff: lib/src/delegate/event_sink.dart

Issue 2660333005: Change generic comment syntax to real generic syntax. (Closed)
Patch Set: Created 3 years, 10 months ago
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1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file 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 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 import 'dart:async'; 5 import 'dart:async';
6 6
7 /// Simple delegating wrapper around an [EventSink]. 7 /// Simple delegating wrapper around an [EventSink].
8 /// 8 ///
9 /// Subclasses can override individual methods, or use this to expose only the 9 /// Subclasses can override individual methods, or use this to expose only the
10 /// [EventSink] methods of a subclass. 10 /// [EventSink] methods of a subclass.
11 class DelegatingEventSink<T> implements EventSink<T> { 11 class DelegatingEventSink<T> implements EventSink<T> {
12 final EventSink _sink; 12 final EventSink _sink;
13 13
14 /// Create a delegating sink forwarding calls to [sink]. 14 /// Create a delegating sink forwarding calls to [sink].
15 DelegatingEventSink(EventSink<T> sink) : _sink = sink; 15 DelegatingEventSink(EventSink<T> sink) : _sink = sink;
16 16
17 DelegatingEventSink._(this._sink); 17 DelegatingEventSink._(this._sink);
18 18
19 /// Creates a wrapper that coerces the type of [sink]. 19 /// Creates a wrapper that coerces the type of [sink].
20 /// 20 ///
21 /// Unlike [new DelegatingEventSink], this only requires its argument to be an 21 /// Unlike [new DelegatingEventSink], this only requires its argument to be an
22 /// instance of `EventSink`, not `EventSink<T>`. This means that calls to 22 /// instance of `EventSink`, not `EventSink<T>`. This means that calls to
23 /// [add] may throw a [CastError] if the argument type doesn't match the 23 /// [add] may throw a [CastError] if the argument type doesn't match the
24 /// reified type of [sink]. 24 /// reified type of [sink].
25 static EventSink/*<T>*/ typed/*<T>*/(EventSink sink) => 25 static EventSink<T> typed<T>(EventSink sink) => sink is EventSink<T>
26 sink is EventSink/*<T>*/ ? sink : new DelegatingEventSink._(sink); 26 ? sink
27 : new DelegatingEventSink._(sink);
27 28
28 void add(T data) { 29 void add(T data) {
29 _sink.add(data); 30 _sink.add(data);
30 } 31 }
31 32
32 void addError(error, [StackTrace stackTrace]) { 33 void addError(error, [StackTrace stackTrace]) {
33 _sink.addError(error, stackTrace); 34 _sink.addError(error, stackTrace);
34 } 35 }
35 36
36 void close() { 37 void close() {
37 _sink.close(); 38 _sink.close();
38 } 39 }
39 } 40 }
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