| // Copyright (c) 2026, 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 The grammar for import and export directives is modified to | |
| /// allow at most one combinator: | |
| /// ``` | |
| /// <importDirective> ::= | |
| /// <metadata> `import' <configurableUri> (`deferred'? `as' <typeIdentifier>)? | |
| /// <combinator>? `;' | |
| /// | |
| /// <exportDirective> ::= | |
| /// <metadata> `export' <configurableUri> <combinator>? `;' | |
| /// ``` | |
| /// When the `single-combinators` experiment is enabled, having more than one | |
| /// combinator (`show` or `hide`) on an `import` or `export` directive is a | |
| /// compile-time error (`multipleCombinators`). | |
| /// | |
| /// @description Checks that it is a compile-time error if an export directive | |
| /// has more than one combinator. | |
| /// @author sgrekhov22@gmail.com | |
| // SharedOptions=--enable-experiment=single-combinators | |
| export 'single_combinators_lib.dart' show a show b; | |
| // ^^^^ | |
| // [analyzer] unspecified | |
| // [cfe] unspecified | |
| export 'single_combinators_lib.dart' show a show a; | |
| // ^^^^ | |
| // [analyzer] unspecified | |
| // [cfe] unspecified | |
| export 'single_combinators_lib.dart' show a hide b; | |
| // ^^^^ | |
| // [analyzer] unspecified | |
| // [cfe] unspecified | |
| export 'single_combinators_lib.dart' hide a show b; | |
| // ^^^^ | |
| // [analyzer] unspecified | |
| // [cfe] unspecified | |
| export 'single_combinators_lib.dart' hide a hide b; | |
| // ^^^^ | |
| // [analyzer] unspecified | |
| // [cfe] unspecified | |
| export 'single_combinators_lib.dart' show a, b show a hide b; | |
| // ^^^^ | |
| // [analyzer] unspecified | |
| // [cfe] unspecified | |
| main() {} |