| /* |
| * 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 From the Unified collection Spec: |
| * A [spreadElement] starting with [...?] is a constant element if its |
| * expression is constant and it evaluates to [null] or a constant [List], [Set] |
| * or [Map] instance originally created by a list, set or map literal. It is a |
| * potentially constant element if the expression is potentially constant |
| * expression. |
| * @description: Checks that constant map spread [...?] element can only be |
| * potentially constant map or null. |
| * @author iarkh@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=constant-update-2018 |
| |
| class MyClass { |
| final String a; |
| const MyClass(Object o) : a = o as String; |
| } |
| |
| main() { |
| const Map l1 = {...?(MyClass(12345) is MyClass ? {1: 1} : {2: 2})}; //# 01: compile-time error |
| const Map m2 = {...?(MyClass(12345) is MyClass ? {11: 124} : null)}; //# 02: compile-time error |
| const Map m3 = {...?(MyClass(12345) is MyClass ? {null} : {9: -13})}; //# 03: compile-time error |
| |
| } |
