| // 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 expression of the form [e is T] or [e is! T] is accepted as a |
| /// potentially and compile-time constant expression if [e] is potentially |
| /// constant or compile-time constant, respectively, and [T] is a compile-time |
| /// constant type. |
| /// @description Checks that an expression of the form [e is! T] is not accepted |
| /// if [e] is not a constant |
| /// @author iarkh@unipro.ru |
| |
| |
| String anObject = ""; |
| |
| class MyClass { |
| final String obj; |
| const MyClass(Object o) : obj = o is! String ? "OK" : "incorrect"; |
| } |
| |
| main() { |
| const MyClass c = MyClass(anObject); |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| } |
