| // 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 |
| /// typeParameter ::= metadata identifier (extends typeNotVoid)? |
| /// typeParameters ::= ‘<’ typeParameter (‘,’ typeParameter)* ‘>’ |
| /// ... |
| /// Type parameters are declared in the type parameter scope of a class or |
| /// function. The type parameters of a generic [G] are in scope in the bounds of |
| /// all of the type parameters of [G]. |
| /// @description Checks that non-function typedef type parameter is in the type |
| /// parameter scope. |
| /// @author iarkh@unipro.ru |
| |
| // SharedOptions=--enable-experiment=nonfunction-type-aliases |
| |
| import "../../Utils/expect.dart"; |
| |
| class A {} |
| class B extends A {} |
| |
| class C<X, Y> { |
| check(exp1, exp2) { |
| Expect.equals(exp1, X); |
| Expect.equals(exp2, Y); |
| } |
| } |
| |
| typedef Alias<X extends A, Y extends X> = C<X, Y>; |
| |
| main() { |
| Alias().check(A, A); |
| Alias<A, A>().check(A, A); |
| Alias<A, B>().check(A, B); |
| Alias<B, B>().check(B, B); |
| } |