mirror of
https://github.com/dart-lang/sdk
synced 2024-09-16 00:19:48 +00:00
9d933d1281
Tested: No new tests. Change-Id: Idf19ce8b6743b221841e6cef6b2a80e8ab37860e Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/354260 Auto-Submit: Lasse Nielsen <lrn@google.com> Reviewed-by: Johnni Winther <johnniwinther@google.com> Reviewed-by: Nate Bosch <nbosch@google.com> Reviewed-by: Daco Harkes <dacoharkes@google.com> Commit-Queue: Lasse Nielsen <lrn@google.com>
25 lines
1 KiB
Dart
25 lines
1 KiB
Dart
// Copyright (c) 2023, 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.
|
|
|
|
extension type MyList<T>(List<T> it) implements List<T> {}
|
|
|
|
extension type MySet<T>(Set<T> it) implements Set<T> {}
|
|
|
|
extension type MyMap<K, V>(Map<K, V> it) implements Map<K, V> {}
|
|
|
|
main() {
|
|
MyList<int> list = [];
|
|
// ^^
|
|
// [analyzer] COMPILE_TIME_ERROR.INVALID_ASSIGNMENT
|
|
// [cfe] A value of type 'List<dynamic>' can't be assigned to a variable of type 'MyList<int>'.
|
|
MySet<String> set = {};
|
|
// ^^
|
|
// [analyzer] COMPILE_TIME_ERROR.INVALID_ASSIGNMENT
|
|
// [cfe] A value of type 'Set<dynamic>' can't be assigned to a variable of type 'MySet<String>'.
|
|
MyMap<String, bool> map = {};
|
|
// ^^
|
|
// [analyzer] COMPILE_TIME_ERROR.INVALID_ASSIGNMENT
|
|
// [cfe] A value of type 'Map<dynamic, dynamic>' can't be assigned to a variable of type 'MyMap<String, bool>'.
|
|
}
|