| // 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. |
| |
| // @dart = 2.9 |
| |
| /// @assertion An if element: |
| /// ... |
| /// It is a compile-time error if the then and else branches are not potentially |
| /// const expressions. The "potentially const" is to allow a the unchosen branch |
| /// to throw an exception. In other words, if elements short-circuit. |
| /// |
| /// @description Checks that it is a compile-time error if the then and else |
| /// branches are not potentially const expressions. |
| /// @author sgrekhov@unipro.ru |
| |
| main() { |
| const t = true; |
| var x = 1; |
| List<int> list1 = const [if (t) x else 1 ]; //# 01: compile-time error |
| const List<int> list2 = [if (!t) 1 else x ]; //# 02: compile-time error |
| var list3 = const [if (t) x else 1, ]; //# 03: compile-time error |
| var list4 = const <int>[if (!t) 1 else x, ]; //# 04: compile-time error |
| const list5 = [if (t) 1 else x ]; //# 05: compile-time error |
| |
| Set<int> set1 = const {if (t) x else 1, -1 }; //# 06: compile-time error |
| const Set<int> set2 = {if (!t) 1 else x, -1 }; //# 07: compile-time error |
| var set3 = const {if (t) x else 1, -1, }; //# 08: compile-time error |
| var set4 = const <int>{if (!t) 1 else x, -1, }; //# 09: compile-time error |
| const set5 = {if (!t) 1 else x, -1 }; //# 10: compile-time error |
| |
| Map<int, String> map1 = const {if (!t) 1: "1" else x: "1"}; //# 11: compile-time error |
| const Map<int, String> map2 = {if (t) x: "x" else 1: "x"}; //# 12: compile-time error |
| var map3 = const {if (!t) 1: "x" else x: "x"}; //# 13: compile-time error |
| var map4 = const <int, String>{if (!t) 1: "x" else x: "x"}; //# 14: compile-time error |
| const map5 = {if (!t) 1: "x" else x: "x"}; //# 15: compile-time error |
| } |
