| /* |
| * 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 An expression of the form e! evaluates e to a value v, throws a |
| * runtime error if v is null, and otherwise evaluates to v. |
| * |
| * @description Check that an expression of the form e! evaluates e to a value |
| * v, throws no runtime error if v is not null. Test 'this!()' and 'this()!' |
| * @author sgrekhov@unipro.ru |
| * @issue 39723 |
| * @issue 39598 |
| */ |
| // SharedOptions=--enable-experiment=non-nullable,extension-methods |
| import "../../Utils/expect.dart"; |
| class C {} |
| |
| extension on C { |
| test() { |
| Expect.equals("Lily was here: 42", this!(42)); //# 01: static type warning |
| Expect.equals("Lily was here: 42", this(42)!); //# 02: static type warning |
| } |
| String call(int v) => "Lily was here: $v"; |
| } |
| |
| main() { |
| C c = new C(); |
| c.test(); |
| } |
