blob: 075b82d60e6dac743ef3eb938123664bb3f305ec [file] [log] [blame]
* 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 A generic type alias is a declaration [D] of one of the following
* forms:
* m typedef id<X1 extends B1, . . . , Xs extends Bs> = T;
* ...
* Under the assumption that X1, . . . , Xs are types such that Xj <: Bj, for
* all j ∈ 1..s, it is a compile-time error if [T] is not regular-bounded, and
* it is a compile-time error if any type occurring in [T] is not well-bounded.
* @description Checks that there is no compile time error if [T] is well
* bounded.
* @author
class A {}
class B<X> {}
class C<X extends C<X>> {}
typedef Alias<X> = Function<Y extends X> (X x);
typedef AAlias<X extends A> = Function<Y extends X> ();
typedef BAlias1<X extends B> = Function<Y extends X> (X x);
typedef BAlias2<X extends B<num>> = X Function<Y extends X> ();
typedef CAlias1<X extends C<X>> = X Function(X x);
typedef CAlias2<X extends C<C<dynamic>>> = X Function(X x);
main() {}