| // 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 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 some disambiguilty cases for sets and maps. |
| /// @author iarkh@unipro.ru |
| |
| |
| const l1 = []; |
| List l2 = []; |
| |
| const s1 = {11}; |
| Set s2 = {}; |
| |
| const m1 = {1: 1}; |
| Map m2 = {2: 2}; |
| |
| const int i1 = 25; |
| int i2 = 25; |
| |
| const n = null; |
| |
| main() { |
| const res1 = {...?l2}; //# 01: compile-time error |
| const res2 = {...?s2}; //# 02: compile-time error |
| const res3 = {...?l1, 123: 2}; //# 03: compile-time error |
| const res4 = {14: 3, ...?s1}; //# 04: compile-time error |
| const res5 = {...?m1, 13}; //# 05: compile-time error |
| const res6 = {...?m2}; //# 06: compile-time error |
| const res7 = {...?i1}; //# 07: compile-time error |
| const res8 = {...?i2}; //# 08: compile-time error |
| const res9 = {...?n}; //# 09: compile-time error |
| const res10 = {...?null}; //# 10: compile-time error |
| } |
