| // Copyright (c) 2021, 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 If [C] denotes a class, an expression of [C] by itself already |
| /// has a meaning, it evaluates to a [Type] object representing the class, so it |
| /// cannot also denote the unnamed constructor. |
| /// |
| /// @description Checks that unnamed constructor tear off can be used in a |
| /// factory constructor |
| /// |
| /// @author sgrekhov@unipro.ru |
| |
| // SharedOptions=--enable-experiment=constructor-tearoffs |
| |
| import "../../Utils/expect.dart"; |
| |
| class C { |
| C(); |
| factory C.f1() = C.new; |
| factory C.f2() = D; |
| factory C.f3() = D.new; |
| } |
| |
| class D extends C { |
| D() : super.new(); |
| } |
| |
| main() { |
| Expect.isFalse(C.f1() is D); |
| Expect.isTrue(C.f2() is D); |
| Expect.isTrue(C.f3() is D); |
| } |