| // Copyright (c) 2018, 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. |
| |
| import "package:expect/expect.dart"; |
| |
| // The `on` word is not a reserved word or built-in identifier. |
| // It's a purely contextual keyword. |
| // A type can have the name `on`, and even a mixin. |
| |
| class A {} |
| |
| mixin on on A {} |
| |
| mixin M on on {} |
| |
| mixin M2 implements on {} |
| |
| class B = A with on; |
| class C = B with M; |
| class D = Object with M2; |
| |
| main() { |
| Expect.type<on>(B()); |
| Expect.type<on>(C()); |
| Expect.type<on>(D()); |
| } |