| // Copyright (c) 2020, 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 implicit tear-off conversion which converts uses of instances |
| * of classes with call methods to the tear-off of their .call method when the |
| * context type is a function type is performed when the context type is a |
| * function type, or the nullable version of a context type. |
| * |
| * @description Check that the implicit tear-off conversion which converts uses |
| * of instances of classes with call methods to the tear-off of their .call |
| * method when the context type is a function type is performed when the context |
| * type is a nullable version of a context type |
| * @author sgrekhov@unipro.ru |
| */ |
| // Requirements=nnbd-strong |
| import "../../Utils/expect.dart"; |
| |
| typedef int Foo(); |
| |
| class C { |
| int call() => 42; |
| } |
| |
| main() { |
| C c = new C(); |
| Function? f = c; |
| if (f != null) { |
| Expect.equals(42, f()); |
| } |
| test(c); |
| } |
| |
| test(Foo? f) { |
| if (f != null) { |
| Expect.equals(42, f()); |
| } |
| } |