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| 1 // Copyright (c) 2016, 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 import 'dart:async'; |
| 6 |
| 7 import '../delegate/stream_sink.dart'; |
| 8 import '../stream_sink_transformer.dart'; |
| 9 |
| 10 /// A wrapper that coerces the generic type of the sink returned by an inner |
| 11 /// transformer to `S`. |
| 12 class TypeSafeStreamSinkTransformer<S, T> |
| 13 implements StreamSinkTransformer<S, T> { |
| 14 final StreamSinkTransformer _inner; |
| 15 |
| 16 TypeSafeStreamSinkTransformer(this._inner); |
| 17 |
| 18 StreamSink<S> bind(StreamSink<T> sink) => |
| 19 DelegatingStreamSink.typed(_inner.bind(sink)); |
| 20 } |
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