| // 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 If a class [C] in an opted-in library implements the same generic |
| /// class [I] more than once as [I0], .., [In], and at least one of the [Ii] is |
| /// not syntactically equal to the others, then it is an error if |
| /// [NNBD_TOP_MERGE(S0, ..., Sn)] is not defined where [Si] is [NORM(Ii)]. |
| /// Otherwise, for the purposes of runtime subtyping checks, [C] is considered to |
| /// implement the canonical interface given by [NNBD_TOP_MERGE(S0, ..., Sn)]. |
| /// |
| /// @description Check that error occurs as a result of [NNBD_TOP_MERGE] of |
| /// [Futureor] and [int], [int?], [Function], [Function?]. |
| /// |
| /// @author iarkh@unipro.ru |
| |
| |
| import "dart:async"; |
| |
| class A<T> {} |
| class B implements A<FutureOr> {} |
| |
| class C_int implements A<int> {} |
| class C_nullable_int implements A<int?> {} |
| class C_Function implements A<Function> {} |
| class C_nullable_Function implements A<Function?> {} |
| |
| class D_int extends B implements C_int {} |
| // ^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| class D_int1 extends C_int implements B {} |
| // ^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| class D_nullable_int extends B implements C_nullable_int {} |
| // ^^^^^^^^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| class D_nullable_int1 extends C_nullable_int implements B {} |
| // ^^^^^^^^^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| class D_Function extends B implements C_Function {} |
| // ^^^^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| class D_Function1 extends C_Function implements B {} |
| // ^^^^^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| class D_nullable_Function extends B implements C_nullable_Function {} |
| // ^^^^^^^^^^^^^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| class D_nullable_Function1 extends C_nullable_Function implements B {} |
| // ^^^^^^^^^^^^^^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| void main() {} |