| // 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 It is a compile-time error if a parameterized type [T] is |
| /// super-bounded when it is used in any of the following ways: |
| /// ... |
| /// [T] is an immediate subterm of an [extends] clause of a class (10.8), or it |
| /// occurs as an element in the type list of an [implements] clause (10.9), or a |
| /// [with] clause (10). |
| /// @description Checks that exception is thrown if super-bounded class occurs in |
| /// as an element in the type list of an [implements] clause |
| /// @author iarkh@unipro.ru |
| |
| |
| class A<T extends A<T>> {} |
| |
| class B1 implements A {} |
| // ^ |
| // [cfe] Inferred type argument 'A<dynamic>' doesn't conform to the bound 'A<T>' of the type variable 'T' on 'A' in the supertype 'A' of class 'B1'. |
| // ^ |
| // [analyzer] COMPILE_TIME_ERROR.TYPE_ARGUMENT_NOT_MATCHING_BOUNDS |
| class B2<X extends A<X>> implements A<X> {} |
| |
| class B3 implements A<dynamic> {} |
| // ^ |
| // [cfe] Type argument 'dynamic' doesn't conform to the bound 'A<T>' of the type variable 'T' on 'A' in the supertype 'A' of class 'B3'. |
| // ^^^^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.TYPE_ARGUMENT_NOT_MATCHING_BOUNDS |
| class B4 implements A<Object?> {} |
| // ^ |
| // [cfe] Type argument 'Object?' doesn't conform to the bound 'A<T>' of the type variable 'T' on 'A' in the supertype 'A' of class 'B4'. |
| // ^^^^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.TYPE_ARGUMENT_NOT_MATCHING_BOUNDS |
| class B5 implements A<void> {} |
| // ^ |
| // [cfe] Type argument 'void' doesn't conform to the bound 'A<T>' of the type variable 'T' on 'A' in the supertype 'A' of class 'B5'. |
| // ^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.TYPE_ARGUMENT_NOT_MATCHING_BOUNDS |
| class B6 implements A<Null> {} |
| // ^ |
| // [cfe] Type argument 'Null' doesn't conform to the bound 'A<T>' of the type variable 'T' on 'A' in the supertype 'A' of class 'B6'. |
| // ^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.TYPE_ARGUMENT_NOT_MATCHING_BOUNDS |
| |
| class B7 implements A<A<dynamic>> {} |
| // ^ |
| // [cfe] Type argument 'A<dynamic>' doesn't conform to the bound 'A<T>' of the type variable 'T' on 'A' in the supertype 'A' of class 'B7'. |
| // ^^^^^^^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.TYPE_ARGUMENT_NOT_MATCHING_BOUNDS |
| class B8 implements A<A<Object?>> {} |
| // ^ |
| // [cfe] Type argument 'A<Object?>' doesn't conform to the bound 'A<T>' of the type variable 'T' on 'A' in the supertype 'A' of class 'B8'. |
| // ^^^^^^^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.TYPE_ARGUMENT_NOT_MATCHING_BOUNDS |
| class B9 implements A<A<void>> {} |
| // ^ |
| // [cfe] Type argument 'A<void>' doesn't conform to the bound 'A<T>' of the type variable 'T' on 'A' in the supertype 'A' of class 'B9'. |
| // ^^^^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.TYPE_ARGUMENT_NOT_MATCHING_BOUNDS |
| class B10 implements A<A<Null>> {} |
| // ^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| class B6 implements A<Never> {} |
| // ^^ |
| // [analyzer] COMPILE_TIME_ERROR.DUPLICATE_DEFINITION |
| // [cfe] 'B6' is already declared in this scope. |
| class B10 implements A<A<Never>> {} |
| // ^^^ |
| // [analyzer] COMPILE_TIME_ERROR.DUPLICATE_DEFINITION |
| // [cfe] 'B10' is already declared in this scope. |
| |
| main() {} |