| // 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 an extension declaration is a top-level declaration with a grammar |
| * similar to: |
| * <extension> ::= |
| * `extension' <identifier>? <typeParameters>? `on' <type> `?'? `{' |
| * memberDeclaration* |
| * `}' |
| * ... |
| * The type can be any valid Dart type, including a single type variable. It can |
| * refer to the type parameters of the extension. |
| * |
| * @description Check that the type can be any valid Dart type, including a |
| * single type variable |
| * @author sgrekhov@unipro.ru |
| */ |
| |
| class C<T> {} |
| |
| extension MyC<T> on C<T> {} |
| |
| extension MyT<T extends C> on T {} |
| |
| extension MyC2<X extends C, Y> on C<Y> {} |
| |
| main() { |
| } |
