| // 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 entry element (the base case in maps): |
| /// |
| /// It is a compile-time error if the key and value expressions are not constant |
| /// expressions. |
| /// |
| /// As is already the case in Dart, it is a compile-time error if the key is an |
| /// instance of a class that implements the operator == unless the key is a |
| /// Boolean, string, an integer, a literal symbol or the result of invoking a |
| /// constant constructor of class Symbol. It is a compile-time error if the type |
| /// arguments of a constant map literal include a type parameter. |
| /// |
| /// The expansion is the entry formed by the key and value expression values. |
| /// |
| /// @description Checks that it is a compile-time error if the key or value |
| /// expressions are not constant expressions. |
| /// @author sgrekhov@unipro.ru |
| |
| |
| main() { |
| var x = 1; |
| var y = "y"; |
| Map<int, String> map1 = const {if (1 > 0) x: "1"}; //# 01: compile-time error |
| Map<int, String> map2 = const {if (1 > 0) 1: y}; //# 02: compile-time error |
| const Map<int, String> map3 = {if (1 > 0) x: "x"}; //# 03: compile-time error |
| const Map<int, String> map4 = {if (1 > 0) 1: y}; //# 04: compile-time error |
| var map5 = const {if (1 > 0) x: "x"}; //# 05: compile-time error |
| var map6 = const {if (1 > 0) 1: y}; //# 06: compile-time error |
| var map7 = const <int, String>{if (1 > 0) x: "x"}; //# 07: compile-time error |
| var map8 = const <int, String>{if (1 > 0) 1: y}; //# 08: compile-time error |
| const map9 = {if (1 > 0) x: "x" }; //# 09: compile-time error |
| const map10 = {if (1 > 0) -1: y }; //# 10: compile-time error |
| } |