| // 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 Any expression of the form e1(args) or e1<types>(args) where e1 |
| /// does not denote a method, and where the static type of e1 is not a function |
| /// type, an interface type declaring a call method, or dynamic, will currently |
| /// be a compile-time error. If the static type of e1 is an interface type |
| /// declaring a call getter, then this stays a compile-time error. Otherwise we |
| /// check for extensions applying to the static type of e1 and declaring a call |
| /// member. If one such most specific extension exists, and it declares a call |
| /// extension method, then the expression is equivalent to e1.call(args) or |
| /// e1.call<typeS>(args). Otherwise it is still a compile-time error. |
| /// |
| /// @description Check that extension with the 'call' method is applicable, then |
| /// it is called. Test type arguments |
| /// @author sgrekhov@unipro.ru |
| |
| |
| import "../../Utils/expect.dart"; |
| |
| class C<T extends int> { |
| T value; |
| C(this.value); |
| } |
| |
| extension IntExtWithCall<T extends int> on C<T> { |
| Iterable<T> call(int to) => |
| Iterable<T>.generate(to - this.value + 1, (i) => (i + this.value) as T); |
| } |
| |
| main() { |
| C<int> c = new C<int>(1); |
| Expect.iterableEquals([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], c(10)); |
| c.value = 2; |
| Expect.iterableEquals([2, 3, 4, 5], c(5)); |
| } |