| /* |
| * 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 An expression of the form [MyList(object)] or |
| * [MyList<String>(object)] must only be used for extension member access. It is |
| * a compile-time error to use it in any other way, similarly to how it is a |
| * compile-time error to use a prefix for anything other than member access. |
| * This also means that you cannot use an override expression as the receiver of |
| * a cascade, because a cascade does evaluate its receiver to a value, or of an |
| * assigning operator like += or ++. Unlike a prefix, it doesn't have to be |
| * followed by a [.] because extensions can also declare operators, but it must |
| * be followed by a [.], a declared operator, or an arguments part (in case the |
| * extension implements call). |
| * @description Check that overriding extensions can be used without member |
| * access call. |
| * @author iarkh@unipro.ru |
| */ |
| |
| |
| import "extension_conflict_resolution_lib.dart" as testlib; |
| |
| extension Ext1 on String { |
| bool get test => false; |
| } |
| |
| main() { |
| testlib.MySimpleExt("testme"); |
| //^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.EXTENSION_OVERRIDE_WITHOUT_ACCESS |
| // ^ |
| // [cfe] Explicit extension application cannot be used as an expression. |
| Ext1("testme"); |
| //^^^^^^^^^^^^^^ |
| // [analyzer] COMPILE_TIME_ERROR.EXTENSION_OVERRIDE_WITHOUT_ACCESS |
| // [cfe] Explicit extension application cannot be used as an expression. |
| |
| testlib.MySimpleExt("testme")++; |
| // [error line 40, column 0] |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| Ext1("testme") += 14; |
| // [error line 44, column 0] |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| testlib.MySimpleExt("testme")--; |
| // [error line 48, column 0] |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| Ext1("testme") *= 10; |
| // [error line 52, column 0] |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| Ext1("testme") = 12; |
| // [error line 57, column 0] |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| testlib.MySimpleExt("testme") = -33; |
| // [error line 61, column 0] |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| Ext1("testme") = null; |
| // [error line 65, column 0] |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| testlib.MySimpleExt("testme") = null; |
| // [error line 69, column 0] |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| } |