| // 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 Test various enclosing combinations of asynchronous and |
| * synchronous while loops with several continue statements |
| * |
| * @issue 25247 |
| * @issue 25234 |
| * @issue 42587 |
| * @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<int> log = []; |
| int i = 0; |
| |
| L4: |
| await for (String s in makeStream(['a0', 'b0'], i++, log)) { |
| int j = 0; |
| L3: |
| while (j < 2) { |
| j++; |
| L2: |
| await for (String s in makeStream(['a1', 'b1'], i++, log)) { |
| int k = 0; |
| L1: |
| while (k < 2) { |
| k++; |
| L0: |
| await for (String s in makeStream(['a2', 'b2'], i++, log)) { |
| continue L0; |
| } |
| continue L1; |
| } |
| continue L2; |
| } |
| continue L3; |
| } |
| continue L4; |
| } |
| Expect.listEquals([], log); |
| } |
| |
| Future test2() async { |
| List<int> log = []; |
| int i = 0; |
| |
| int j = 0; |
| L0: |
| while (j < 2) { |
| j++; |
| L1: |
| await for (String s in makeStream(['a0', 'b0'], i++, log)) { |
| int k = 0; |
| L2: |
| while (k < 2) { |
| k++; |
| L3: |
| await for (String s in makeStream(['a1', 'b1'], i++, log)) { |
| int n = 0; |
| L4: |
| while (n < 2) { |
| n++; |
| continue L4; |
| } |
| await for (String s in makeStream(['a2', 'b2'], i++, log)) { |
| continue L3; |
| } |
| } |
| int m = 0; |
| while (m < 2) { |
| m++; |
| await for (String s in makeStream(['a3', 'b3'], i++, log)) { |
| continue L1; |
| } |
| } |
| } |
| } |
| continue L0; |
| } |
| Expect.listEquals([2, 3, 4, 6, 7, 8, 11, 12, 13, 15, 16, 17], log); |
| } |
| |
| Future test3() async { |
| List<int> log = []; |
| |
| L0: |
| await for (String s in makeStream(['a', 'b'], 0, log)) { |
| L1: |
| while (log.length < 10) { |
| continue L0; |
| L2: |
| await for (String s in makeStream(['a', 'b'], 1, log)) { |
| L3: |
| while (log.length < 10) { |
| L4: |
| await for (String s in makeStream(['a', 'b'], 2, log)) { |
| continue L4; |
| } |
| for (String s in ['a','b']) { |
| continue L3; |
| } |
| } |
| await for (String s in makeStream(['a', 'b'], 3, log)) { |
| while (log.length < 10) { |
| continue L1; |
| } |
| } |
| } |
| } |
| continue L0; |
| } |
| Expect.listEquals([], log); |
| } |
| |
| Future test4() async { |
| List<int> log = []; |
| int i = 0; |
| |
| while (i < 9) { |
| L0: |
| await for (String s in makeStream(['a0', 'b0'], i++, log)) { |
| L1: |
| while (log.length < 3) { |
| await for (String s in makeStream(['a1', 'b1'], i++, log)) { |
| continue L1; |
| } |
| } |
| L2: |
| await for (String s in makeStream(['a1', 'b1'], i++, log)) { |
| while (log.length < 9) { |
| continue L0; |
| } |
| } |
| } |
| } |
| Expect.listEquals([1, 2, 3, 4, 5, 7, 8], log); |
| } |
| |
| main() { |
| asyncStart(); |
| Future.wait([test1(), test2(), test3(), test4()]).then((v) => asyncEnd()); |
| } |