blob: 311e83fece833242de36dd3bfad4c473c8c3c929 [file] [log] [blame]
// Copyright (c) 2015, 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.
library async.result_future;
import 'dart:async';
import '../result.dart';
import 'delegate/future.dart';
/// A [Future] wrapper that provides synchronous access to the result of the
/// wrapped [Future] once it's completed.
class ResultFuture<T> extends DelegatingFuture<T> {
/// Whether the future has fired and [result] is available.
bool get isComplete => result != null;
/// The result of the wrapped [Future], if it's completed.
/// If it hasn't completed yet, this will be `null`.
Result<T> get result => _result;
Result<T> _result;
factory ResultFuture(Future<T> future) {
var resultFuture;
resultFuture = new ResultFuture._(Result.capture(future).then((result) {
resultFuture._result = result;
return result.asFuture;
return resultFuture;
ResultFuture._(Future<T> future)
: super(future);