| // 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 The assignment e1?.f = e2 translates to: |
| /// SHORT[EXP(e1), fn[x] => x.f = EXP(e2)] |
| /// |
| /// The other assignment operators are handled equivalently. |
| /// |
| /// @description Check that assignments like e1?.f ??= e2 translates to: |
| /// SHORT[EXP(e1), fn[x] => x.f ??= EXP(e2)] |
| /// @author sgrekhov@unipro.ru |
| |
| // Requirements=nnbd-strong |
| import "../../Utils/expect.dart"; |
| |
| class C { |
| int? test = 13; |
| } |
| |
| void testShort(C? x, int e2) { |
| var actual1 = x?.test ??= e2; |
| var n0 = x; |
| var expected1 = n0 == null ? null : n0.test ??= e2; |
| Expect.equals(expected1, actual1); |
| } |
| |
| main() { |
| C? c1 = null; |
| testShort(c1, 42); |
| c1 = new C(); |
| testShort(c1, 42); |
| if (c1 != null) { |
| c1.test = null; |
| testShort(c1, 42); |
| } |
| |
| C c2 = new C(); |
| testShort(c2, 42); |
| c2.test = null; |
| testShort(c2, 42); |
| } |