| // 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. |
| |
| /// @assertion If sE is an asynchronous for loop, let ak be the set of |
| /// asynchronous for loops and yield-each statements enclosing sc that are |
| /// enclosed in sE , 1 ≤ k ≤ m, where ak is enclosed in ak+1 . The stream |
| /// subscriptions associated with aj are canceled, 1 ≤ j ≤ m, innermost first, |
| /// so that aj is canceled before aj+1 . |
| /// |
| /// @description Check that continue statement cancels all streams associated |
| /// with enclosing asynchronous loops, except sE |
| /// |
| /// @author a.semenov@unipro.ru |
| |
| import 'dart:async'; |
| import '../../../Utils/expect.dart'; |
| import 'stream_utils.dart' as StreamUtils; |
| |
| Stream makeStream(Iterable iterable, int id, List log) { |
| return StreamUtils.makeStream(iterable, beforeCancel: () { log.add(id); }); |
| } |
| |
| Future test1() async { |
| List log = []; |
| int i = 0; |
| L: |
| await for (String s in makeStream(['a0', 'b0'], i++, log)) { |
| log.add(s); |
| await for (String s in makeStream(['a1', 'b1'], i++, log)) { |
| continue L; |
| log.add(s); |
| } |
| } |
| Expect.listEquals(['a0', 1, 'b0', 2], log); |
| } |
| |
| Future test2() async { |
| List log = []; |
| int i = 0; |
| |
| L: |
| await for (String s in makeStream(['a0', 'b0'], i++, log)) { |
| await for (String s in makeStream(['a1', 'b1'], i++, log)) { |
| await for (String s in makeStream(['a2', 'b2'], i++, log)) { |
| await for (String s in makeStream(['a3', 'b3'], i++, log)) { |
| await for (String s in makeStream(['a4', 'b4'], i++, log)) { |
| continue L; |
| log.add(s); |
| } |
| log.add(s); |
| } |
| log.add(s); |
| } |
| log.add(s); |
| } |
| log.add(s); |
| } |
| Expect.listEquals([4, 3, 2, 1, 8, 7, 6, 5], log); |
| } |
| |
| main() { |
| asyncStart(); |
| Future.wait([test1(), test2()]).then((v) => asyncEnd()); |
| } |