| // Copyright (c) 2011, 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 The cast expression ensures that an object is a member of a type. |
| /// typeCast: |
| /// asOperator type |
| /// ; |
| /// asOperator: |
| /// as |
| /// ; |
| /// @description Checks that there're no errors or warnings when the type cast |
| /// operator is used correctly (testing simple types as well as generics and |
| /// function types). |
| /// @author rodionov |
| |
| import '../../../Utils/expect.dart'; |
| |
| abstract class I {} |
| class C implements I {} |
| |
| class G<Q, R> {} |
| class GG<S, T> extends G<S, T> {} |
| |
| typedef String func(num n, String p); |
| num f(double d, Pattern p) { return double.nan; } |
| |
| main() { |
| 1 as int; |
| 0 as num; |
| double.nan as num; |
| "foo" as String; |
| "bar" as Pattern; |
| new C() as I; |
| new GG<int, bool>() as G<int, bool>; |
| ((num x, String y) => "$x$y") as func; |
| Expect.throws(() { f as func; }); |
| f as Function; |
| f as Object; |
| } |
