| /* |
| * Copyright (c) 2020, 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 abstract instance variable declaration D is treated as an |
| * abstract getter declaration and possibly an abstract setter declaration. The |
| * setter is included if and only if D is non-final. The return type of the |
| * getter and the parameter type of the setter, if present, is the type of D |
| * (which may be declared explicitly, obtained by override inference, or |
| * defaulted to dynamic). The parameter of the setter, if present, has the |
| * modifier covariant if and only if D has the modifier covariant |
| * |
| * @description Checks that declaration |
| * abstract covariant var cx; |
| * desugared as |
| * dynamic get cx; |
| * void set cx(covariant dynamic _); |
| * @author sgrekhov@unipro.ru |
| */ |
| |
| abstract class A { |
| abstract covariant var cn; |
| } |
| |
| class C1 extends A { |
| dynamic get cn => 3.14; |
| void set cn(covariant dynamic _) {} |
| } |
| |
| class C2 extends C1 { |
| int get cn => 42; |
| @override |
| void set cn(int _) {} |
| } |
| test(A a, C1 c1, C2 c2) { |
| a.cn; |
| a.cn = 42; |
| a.cn = 3.14; |
| |
| c1.cn; |
| c1.cn = 42; |
| c1.cn = 3.14; |
| |
| c2.cn; |
| c2.cn = 42; |
| } |
| |
| main() { |
| } |