| // 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 some disambiguilty cases for sets and maps. |
| /// @author iarkh@unipro.ru |
| |
| |
| const List? l1 = []; |
| List? l2 = []; |
| |
| const Set? s1 = {11}; |
| Set? s2 = {}; |
| |
| const Map? m1 = {1: 1}; |
| Map? m2 = {2: 2}; |
| |
| const int? i1 = 25; |
| int? i2 = 25; |
| |
| const n = null; |
| |
| main() { |
| const res1 = {...?l2}; |
| // ^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| const res2 = {...?s2}; |
| // ^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| const res3 = {...?l1, 123: 2}; |
| // ^^^^^^^^^^^^^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.AMBIGUOUS_SET_OR_MAP_LITERAL_BOTH |
| // [cfe] Both Iterable and Map spread elements encountered in ambiguous literal. |
| const res4 = {14: 3, ...?s1}; |
| // ^^^^^^^^^^^^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.AMBIGUOUS_SET_OR_MAP_LITERAL_BOTH |
| // [cfe] Both Iterable and Map spread elements encountered in ambiguous literal. |
| const res5 = {...?m1, 13}; |
| // ^^^^^^^^^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.AMBIGUOUS_SET_OR_MAP_LITERAL_BOTH |
| // ^ |
| // [cfe] Unexpected type 'Map<dynamic, dynamic>?' of a spread. Expected 'dynamic' or an Iterable. |
| const res6 = {...?m2}; |
| // ^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| const res7 = {...?i1}; |
| // ^^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| const res8 = {...?i2}; |
| // ^^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| const res9 = {...?n}; |
| // ^^^^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.AMBIGUOUS_SET_OR_MAP_LITERAL_EITHER |
| // [cfe] Not enough type information to disambiguate between literal set and literal map. |
| const res10 = {...?null}; |
| // ^^^^^^^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.AMBIGUOUS_SET_OR_MAP_LITERAL_EITHER |
| // [cfe] Not enough type information to disambiguate between literal set and literal map. |
| } |