Files
kotlin-fork/compiler/testData/codegen/box/closures/kt11634_3.kt
T
Juan Chen d163853c97 [FIR] add support for implementation by delgation
This commit handles "subclass: super-interface by delegate-expression".

During Psi2Fir, for each delegate, we add to the subclass a synthetic
field (which has type super-interface), and an assignment of the
delegate-expression to the synthetic field in the primary constructor,
so that the delegate-expression can be resolved and transformed along
the way.

During Fir2Ir, we look up delegatable members from the super-interface
and generate corresponding functions/properties for the subclass.

TODO: support for generic delegatable members and generic
super-interface.
2020-07-08 09:42:24 +03:00

27 lines
492 B
Kotlin
Vendored

interface A {
fun foo(): String
}
class AImpl(val z: String) : A {
override fun foo(): String = z
}
open class AFabric {
open fun createA(z: String): A = AImpl(z)
}
class AWrapperFabric : AFabric() {
override fun createA(z: String): A {
return AImpl("fail: $z")
}
fun createMyA(): A {
val z = "OK"
return object : A by super<AFabric>@AWrapperFabric.createA(z) {}
}
}
fun box(): String {
return AWrapperFabric().createMyA().foo()
}