| // Copyright (c) 2016, 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 Execution of a postfix expression of the form e1?.v-- is |
| * equivalent to executing ((x) => x == null? null: x.v--)(e1) unless e1 is |
| * a type literal, in which case it is equivalent to e1.v-- |
| * @description Checks that evaluation of an expression of the form e1?.v-- is |
| * equivalent to executing ((x) => x == null? null: x.v--)(e1) |
| * @author sgrekhov@unipro.ru |
| */ |
| import '../../../Utils/expect.dart'; |
| |
| class C { |
| int v = 0; |
| } |
| |
| main() { |
| C? c1 = null; |
| Expect.equals(c1?.v--, null); |
| |
| var c2 = new C() as C?; |
| Expect.equals(c2?.v--, 0); |
| Expect.equals(c2?.v, -1); |
| } |