Files
kotlin-fork/compiler/testData/codegen/box/inlineClasses/interfaceDelegation/interfaceImplementationByDelegation.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

17 lines
332 B
Kotlin
Vendored

// !LANGUAGE: +InlineClasses
interface IFoo {
fun getO(): String
val k: String
val ok: String get() = getO() + k
}
inline class InlineFooImpl(val s: String): IFoo {
override fun getO(): String = s
override val k: String get() = "K"
}
class Test(s: String) : IFoo by InlineFooImpl(s)
fun box() = Test("O").ok