| library; |
| // |
| // Problems in library: |
| // |
| // pkg/front_end/testcases/class_modifiers/subtype_function.dart:5:17: Error: The class 'Function' can't be extended outside of its library because it's a final class. |
| // class A extends Function {} |
| // ^ |
| // |
| // pkg/front_end/testcases/class_modifiers/subtype_function.dart:7:20: Error: The class 'Function' can't be implemented outside of its library because it's a final class. |
| // class B implements Function {} |
| // ^ |
| // |
| // pkg/front_end/testcases/class_modifiers/subtype_function.dart:9:14: Error: The class 'Function' can't be used as a mixin because it isn't a mixin class nor a mixin. |
| // class C with Function {} |
| // ^ |
| // |
| // pkg/front_end/testcases/class_modifiers/subtype_function.dart:9:7: Error: The type 'C' must be 'base', 'final' or 'sealed' because the supertype 'Function' is 'final'. |
| // Try adding 'base', 'final', or 'sealed' to the type. |
| // class C with Function {} |
| // ^ |
| // |
| import self as self; |
| import "dart:core" as core; |
| |
| class A extends core::Object { |
| synthetic constructor •() → self::A |
| ; |
| } |
| class B extends core::Object { |
| synthetic constructor •() → self::B |
| ; |
| } |
| abstract class _C&Object&Function extends core::Object { |
| synthetic constructor •() → self::_C&Object&Function |
| ; |
| } |
| class C extends self::_C&Object&Function { |
| synthetic constructor •() → self::C |
| ; |
| } |