| // Copyright (c) 2011, 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. |
| // Operator dart test program. |
| |
| // @dart = 2.9 |
| |
| import "package:expect/expect.dart"; |
| |
| class Helper { |
| int i; |
| Helper(int val) : i = val {} |
| operator [](int index) { |
| return i + index; |
| } |
| |
| void operator []=(int index, int val) { |
| i = val; |
| } |
| } |
| |
| main() { |
| Helper obj = new Helper(10); |
| Expect.equals(10, obj.i); |
| obj[10] = 20; |
| Expect.equals(30, obj[10]); |
| |
| regress32754(); |
| } |
| |
| // Regression test for https://github.com/dart-lang/sdk/issues/32754 |
| class C { |
| operator []=(i, value) { |
| value = 'OOPS'; |
| } |
| } |
| |
| class C2 { |
| int data; |
| operator []=(i, value) { |
| // The return expression must be evaluated, then ignored. |
| return () { |
| data = i + value; |
| return null; |
| }(); |
| } |
| } |
| |
| regress32754() { |
| var c = new C(); |
| Expect.equals('ok', c[0] = 'ok'); |
| |
| var c2 = new C2(); |
| Expect.equals(23, c2[100] = 23); |
| Expect.equals(123, c2.data); |
| } |