blob: b9a538ab1882ee8eb6d7653cdbc0914d925cff0d [file] [log] [blame]
// 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 'dart:async';
import 'result.dart';
import 'capture_sink.dart';
/// A stream transformer that captures a stream of events into [Result]s.
/// The result of the transformation is a stream of [Result] values and no
/// error events. Exposed by [Result.captureStream].
class CaptureStreamTransformer<T> extends StreamTransformerBase<T, Result<T>> {
const CaptureStreamTransformer();
Stream<Result<T>> bind(Stream<T> source) =>
new Stream<Result<T>>.eventTransformed(
source, (sink) => new CaptureSink<T>(sink));