| // 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 A constant expression is an expression whose value can never |
| /// change, and that can be evaluated entirely at compile time. |
| /// A constant expression is one of the following: |
| /// . . . |
| /// • A simple or qualified identifier denoting a top-level function or a static |
| /// method that is not qualified by a deferred prefix. |
| /// @description Checks that a simple or qualified identifier denoting a |
| /// top-level function or a static method can be assigned to a constant |
| /// variable. |
| /// @author ngl@unipro.ru |
| |
| import '../../../Utils/expect.dart'; |
| import 'constants_lib.dart' as clib; |
| |
| void F() {} |
| |
| class B { |
| static void M() {} |
| } |
| |
| const a = F; |
| const b = B.M; |
| const c = clib.F; |
| const d = clib.B.M; |
| |
| main() { |
| Expect.isTrue(a is Function); |
| Expect.isTrue(b is Function); |
| Expect.isTrue(c is Function); |
| Expect.isTrue(d is Function); |
| Expect.runtimeIsType<Function>(a); |
| Expect.runtimeIsType<Function>(b); |
| Expect.runtimeIsType<Function>(c); |
| Expect.runtimeIsType<Function>(d); |
| } |