| /* |
| * 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 If e1 translates to F then e1?.[e2] = e3 translates to: |
| * SHORT[EXP(e1), fn[x] => x[EXP(e2)] = EXP(e3)] |
| * |
| * @description Check that if e1 translates to F then e1?.[e2] = e3 translates |
| * to: SHORT[EXP(e1), fn[x] => x[EXP(e2)] = EXP(e3)]. Test type aliases |
| * @author sgrekhov@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=non-nullable,nonfunction-type-aliases |
| import "../../Utils/expect.dart"; |
| |
| class A { |
| List _list; |
| dynamic operator[](int index) => _list[index]; |
| |
| A(int length) { |
| _list = new List(length); |
| } |
| } |
| |
| typedef AAlias1 = A?; |
| typedef AAlias2 = A; |
| |
| main() { |
| AAlias1 a1 = null; |
| Expect.isNull(a1?.[42] = 13); |
| Expect.isNull(a1); |
| a1 = new A(3); |
| Expect.equals(42, a1?.[0] = 42); |
| Expect.equals(42, a1[0]); |
| |
| AAlias2 a2 = new A(3); |
| Expect.equals(42, a2?.[0] = 42); /// static type warning |
| Expect.equals(42, a2[0]); |
| } |