internal _SinkTransformerStreamSubscription(Stream <S> source, _async._SinkMapper <S, T> mapper,
Action <T> onData, Action <object, string> onError, Action onDone, bool cancelOnError)
// We set the adapter's target only when the user is allowed to send data.
: base(onData, onError, onDone, cancelOnError)
{
_EventSinkWrapper <T> eventSink = new _EventSinkWrapper <T>(this);
_transformerSink = mapper(eventSink);
_subscription =
source.listen(_handleData, onError: _handleError, onDone: _handleDone);
}
public _StreamSinkTransformer(_async._SinkMapper <S, T> _sinkMapper)
{
this._sinkMapper = _sinkMapper;
}
internal _BoundSinkStream(Stream <S> _stream, _async._SinkMapper <S, T> _sinkMapper)
{
this._stream = _stream;
this._sinkMapper = _sinkMapper;
}
public static Stream <T> eventTransformed(
Stream <T> source, _async._SinkMapper <T, T> mapSink)
{
return(new _BoundSinkStream <T, T>(source, mapSink));
}
