| /* |
| * 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 grammar for types does not allow multiple successive ? |
| * operators on a type. That is, the grammar for types is nominally equivalent |
| * to: |
| * type' ::= functionType |
| * | qualified typeArguments? |
| * type ::= type' `?`? |
| * |
| * @description Check that the grammar for types does not allow multiple |
| * successive ? operators on a type. Test legacy pre-NNBD types and type aliases |
| * @author sgrekhov@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=nonfunction-type-aliases |
| // Requirements=nnbd-weak |
| import "legacy_library_aliases_lib.dart"; |
| |
| typedef AAlias2 = A??; |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| class B<X extends AAlias??> {} |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| test(AAlias?? a) {} |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| main() { |
| AAlias?? a = null; |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| } |
