| // 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. |
| |
| // @dart = 2.9 |
| |
| import "package:expect/expect.dart"; |
| |
| var string = ''; |
| |
| append(x) { |
| string += x; |
| return x; |
| } |
| |
| class A { |
| var x = append('x'); |
| var y; |
| var z; |
| |
| // Should append y but not yet x. |
| A() : this.foo(append('y')); |
| |
| // Append x and z. |
| A.foo(this.y) : z = append('z'); |
| } |
| |
| class B extends A { |
| var w; |
| |
| // Call the redirecting constructor using super. |
| B() |
| : w = append('w'), |
| super(); |
| } |
| |
| main() { |
| string = ''; |
| new A(); |
| Expect.equals('yxz', string); |
| |
| string = ''; |
| new B(); |
| Expect.equals('wyxz', string); |
| } |