Svyatoslav Kuzmich
36 lines
838 B
Kotlin
Vendored
36 lines
838 B
Kotlin
Vendored
import kotlin.reflect.KProperty
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public open class TestDelegate<T: Any>(private val initializer: () -> T) {
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private var value: T? = null
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operator open fun getValue(thisRef: Any?, desc: KProperty<*>): T {
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if (value == null) {
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value = initializer()
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}
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return value!!
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}
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operator open fun setValue(thisRef: Any?, desc: KProperty<*>, svalue : T) {
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value = svalue
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}
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}
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class A
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class B
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class C
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class D
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public val A.s: String by TestDelegate({"A"})
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public val B.s: String by TestDelegate({"B"})
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public val C.s: String by TestDelegate({"C"})
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public val D.s: String by TestDelegate({"D"})
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fun box() : String {
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if (A().s != "A") return "Fail A"
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if (B().s != "B") return "Fail B"
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if (C().s != "C") return "Fail C"
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if (D().s != "D") return "Fail D"
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return "OK"
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}
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