| /* |
| * 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 A simple member invocation on a target expression X is an |
| * expression of one of the forms: |
| * Member invocation on target X Corresponding member name |
| * -X unary- |
| * @description Check explicit extension member invocation in form of -X |
| * @author sgrekhov@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=extension-methods |
| |
| class C { |
| String operator -() => "Lily was here"; |
| } |
| |
| extension Extension1 on C { |
| String operator ~() => "Show must go on"; |
| } |
| |
| main() { |
| C c = new C(); |
| -Extension1(c); |
| //^^^^^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| } |
