| /* |
| * 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 We extend the list grammar to allow spread elements in addition to |
| * regular elements: |
| * listLiteral: |
| * const? typeArguments? '[' spreadableList? ']' |
| * ; |
| * |
| * spreadableList: |
| * spreadableExpression ( ',' spreadableExpression )* ','? |
| * ; |
| * |
| * spreadableExpression: |
| * expression | |
| * spread |
| * ; |
| * |
| * spread: |
| * ( '...' | '...?' ) expression |
| * ; |
| * |
| * Instead of [expressionList], this uses a new [spreadableList] rule since |
| * [expressionList] is used elsewhere in the grammar where spreads aren't |
| * allowed. Each element in a list is either a normal expression or a spread |
| * element. If the spread element starts with [...?], it's a null-aware spread |
| * element. |
| * @description Checks that [spreadableList] can not be declared as constant if |
| * spreadable element is not a constant. |
| * @author iarkh@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=constant-update-2018 |
| |
| main() { |
| List list1 = ["abc", "int", "hello"]; |
| List list2; |
| int i; |
| |
| List a = const [...list2]; //# 01: compile-time error |
| a = const ["testme", ...list2]; //# 02: compile-time error |
| a = const [...list2, "testme"]; //# 03: compile-time error |
| a = const ["abc", ...list1, "int", "hello", 1, ...list2, 2, 12]; //# 04: compile-time error |
| a = const [...list1, i]; //# 05: compile-time error |
| } |
