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Side by Side Diff: tests/language/src/Factory3Test.dart

Issue 10248007: test rename overhaul: step 8 - language tests (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Created 8 years, 7 months ago
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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file.
4 // VMOptions=--enable_type_checks --enable_asserts
5
6 interface Link<T> extends Iterable<T> default LinkFactory<T> {
7 Link(T head, [Link<T> tail]);
8 Link<T> prepend(T element);
9 }
10
11 interface EmptyLink<T> extends Link<T> default LinkTail<T> {
12 const EmptyLink();
13 }
14
15 class LinkFactory<T> {
16 factory Link(T head, [Link<T> tail]) {
17 return new LinkEntry<T>(head, tail);
18 }
19 }
20
21 class AbstractLink<T> implements Link<T> {
22 const AbstractLink();
23 Link<T> prepend(T element) {
24 print("$element");
25 if (0 is T) {
26 throw "0 is not a T";
27 }
28 return new Link<T>(element, this);
29 }
30 }
31
32 class LinkTail<T> extends AbstractLink<T> implements EmptyLink<T> {
33 const LinkTail();
34 }
35
36 class LinkEntry<T> extends AbstractLink<T> {
37 LinkEntry(T head, Link<T> realTail);
38 }
39
40 class Fisk {
41 Link<Fisk> nodes = const EmptyLink<Fisk>();
42 final int id;
43 Fisk(this.id);
44 toString() => id.toString();
45 }
46
47 main() {
48 new Fisk(0).nodes.prepend(new Fisk(1)).prepend(new Fisk(2));
49 }
50
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