| // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| import '../../stream_channel.dart'; |
| |
| /// A wrapper that coerces the generic type of the channel returned by an inner |
| /// transformer to `S`. |
| class TypeSafeStreamChannelTransformer<S, T> |
| implements StreamChannelTransformer<S, T> { |
| final StreamChannelTransformer _inner; |
| |
| TypeSafeStreamChannelTransformer(this._inner); |
| |
| @override |
| StreamChannel<S> bind(StreamChannel<T> channel) => |
| _inner.bind(channel).cast(); |
| } |
