| /* |
| * Copyright (c) 2019, 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 It is a compile-time error if an extension application occurs in a |
| * place where it is not the target expression of a simple or composite member |
| * invocation. That is, the only valid use of an extension application is to |
| * invoke members on it. |
| * |
| * @description Check that it is a compile-time error if an extension |
| * application occurs in a place where it is not the target expression of a |
| * simple or composite member invocation. Test -- operator |
| * @author sgrekhov@unipro.ru |
| */ |
| |
| |
| class C { |
| int value; |
| C() : value = 0 {} |
| } |
| |
| extension Ext on C { |
| C operator -(int val) { |
| this.value += val; |
| return this; |
| } |
| } |
| |
| main() { |
| C c = C(); |
| Ext(c)--; |
| //^^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| --Ext(c); |
| //^^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| } |