| // 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 The goal is that you can always tear off a constructor, then |
| /// invoke the torn off function and get the same result as invoking the |
| /// constructor directly. For a named constructor it means that |
| /// |
| /// var v1 = C.name(args); |
| /// var v2 = (C.name)(args); |
| // |
| /// // and |
| /// |
| /// var v3 = C<typeArgs>.name(args); |
| /// var v4 = (C<typeArgs>.name)(args); |
| /// var v5 = (C.name)<typeArgs>(args); |
| /// |
| /// should always give equivalent values for [v1] and [v2], and for [v3], [v4] |
| /// and [v5]. |
| /// |
| /// @description Checks that [v1] and [v2] are allowed and equivalent |
| /// constructions. |
| /// @author iarkh@unipro.ru |
| |
| // SharedOptions=--enable-experiment=constructor-tearoffs |
| |
| import "../../Utils/expect.dart"; |
| |
| class C { |
| int? i; |
| |
| C() { i = 0; } |
| |
| C.constr1(int i) { this.i = 1; } |
| C.constr2(int num, String str) { this.i = 2; } |
| C.constr3() { i = 3; } |
| } |
| |
| main() { |
| Expect.equals(0, C.new().i); |
| Expect.equals(0, (C.new)().i); |
| |
| Expect.equals(1, C.constr1(42).i); |
| Expect.equals(1, (C.constr1)(42).i); |
| |
| Expect.equals(2, C.constr2(1, "123").i); |
| Expect.equals(2, (C.constr2)(1, "123").i); |
| |
| Expect.equals(3, C.constr3().i); |
| Expect.equals(3, (C.constr3)().i); |
| } |