| /* |
| * 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] translates to: |
| * SHORT[EXP(e1), fn[x] => x[EXP(e2)]] |
| * |
| * @description Check that if e1 translates to F then e1?[e2] translates to: |
| * SHORT[EXP(e1), fn[x] => x[EXP(e2)]] |
| * @author sgrekhov@unipro.ru |
| */ |
| // Requirements=nnbd-strong |
| import "../../Utils/expect.dart"; |
| |
| class C { |
| int operator[](int index) => index; |
| } |
| |
| void testShort(C? x) { |
| var actual1 = x?[42]; |
| var n0 = x; |
| var expected1 = n0 == null ? null : n0[42]; |
| Expect.equals(expected1, actual1); |
| } |
| |
| main() { |
| C? c1 = null; |
| testShort(c1); |
| c1 = new C(); |
| testShort(c1); |
| |
| C c2 = new C(); |
| testShort(c2); |
| } |