| /* |
| * 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. Test built-in types |
| * @author sgrekhov@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=extension-methods |
| import "dart:async"; |
| |
| extension MyInt on int {} |
| |
| extension MyNum on num {} |
| |
| extension MyDouble on double {} |
| |
| extension MyNull on Null {} |
| |
| extension MyString on String {} |
| |
| extension MyVoid on void {} |
| |
| extension MyDynamic on dynamic {} |
| |
| extension MyBool on bool {} |
| |
| extension MyObject on Object {} |
| |
| extension MyFunction on Function {} |
| |
| extension MyFuture<T> on Future<T> {} |
| |
| extension MyFutureOr<T> on FutureOr<T> {} |
| |
| extension MyIterable<T> on Iterable<T> {} |
| |
| main() { |
| } |