| // LANGUAGE: +CompanionBlocks +CompanionExtensions |
| |
| interface MyInterface { |
| companion { |
| fun interfaceFun() = "InterfaceFun" |
| val interfaceVal: String get() = "InterfaceVal" |
| } |
| } |
| |
| companion fun MyInterface.extFun() = "ExtFun" |
| |
| class Impl : MyInterface { |
| fun useInterfaceCompanion() = MyInterface.interfaceFun() + MyInterface.interfaceVal |
| } |
| |
| fun box(): String { |
| // Access companion block members on interface |
| if (MyInterface.interfaceFun() != "InterfaceFun") return "FAIL: interfaceFun=${MyInterface.interfaceFun()}" |
| if (MyInterface.interfaceVal != "InterfaceVal") return "FAIL: interfaceVal=${MyInterface.interfaceVal}" |
| |
| // Access companion extensions on interface |
| if (MyInterface.extFun() != "ExtFun") return "FAIL: extFun=${MyInterface.extFun()}" |
| |
| // Access from implementing class instance |
| val impl = Impl() |
| if (impl.useInterfaceCompanion() != "InterfaceFunInterfaceVal") return "FAIL: useInterfaceCompanion=${impl.useInterfaceCompanion()}" |
| |
| return "OK" |
| } |
