Mikhail Glukhikh
27 lines
698 B
Kotlin
Vendored
27 lines
698 B
Kotlin
Vendored
import kotlin.reflect.KProperty
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class Delegate {
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var inner = Derived()
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operator fun getValue(t: Any?, p: KProperty<*>): Derived {
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inner = Derived(inner.a + "-get")
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return inner
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}
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operator fun setValue(t: Any?, p: KProperty<*>, i: Base) { inner = Derived(inner.a + "-" + i.a + "-set") }
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}
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class A {
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var prop: Derived by Delegate()
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}
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fun box(): String {
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val c = A()
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if(c.prop.a != "derived-get") return "fail get ${c.prop.a}"
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c.prop = Derived()
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if (c.prop.a != "derived-get-derived-set-get") return "fail set ${c.prop.a}"
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return "OK"
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}
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open class Base(open val a: String = "base")
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class Derived(override val a: String = "derived"): Base()
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