| /* |
| * 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 If a list or set literal has a downwards inference type of |
| * [Iterable<T>] for some [T], then the downwards inference context type of a |
| * spread element in that list is [Iterable<T>]. |
| * @description Checks statically that a spread element inference context type |
| * is [T] in the list literal |
| * @author iarkh@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=constant-update-2018 |
| |
| class A {} |
| class B extends A {} |
| class C extends B {} |
| |
| List<T> getAList<T>(var a) { return <T>[a]; } |
| |
| main() { |
| var a_list = getAList<A>(new A()); |
| var b_list = getAList<B>(new B()); |
| var c_list = getAList<C>(new C()); |
| var int_list = getAList<int>(12); |
| var str_list = ["string"]; |
| A a = new A(); |
| B b = new B(); |
| C c = new C(); |
| |
| List list1 = <int>[...str_list]; //# 01: compile-time error |
| List list2 = <int>[1, 2, ...a_list, 14]; //# 02: compile-time error |
| List list3 = <int>[1, 14, 0, ...c_list]; //# 03: compile-time error |
| |
| List list4 = <A>[...int_list]; //# 04: compile-time error |
| List list5 = <A>[...?str_list]; //# 05: compile-time error |
| } |