Mikhael Bogdanov
51 lines
1.2 KiB
Kotlin
Vendored
51 lines
1.2 KiB
Kotlin
Vendored
// IGNORE_BACKEND: JVM_IR
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// TARGET_BACKEND: JVM
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import java.util.IdentityHashMap
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import kotlin.reflect.KProperty
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class A {
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var foo: Int by IntHandler
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companion object {
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var bar: Any? by AnyHandler
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}
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}
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val baz: String by StringHandler
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val metadatas = IdentityHashMap<KProperty<*>, Unit>()
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fun record(p: KProperty<*>) = metadatas.put(p, Unit)
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object IntHandler {
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operator fun getValue(t: Any?, p: KProperty<*>): Int { record(p); return 42 }
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operator fun setValue(t: Any?, p: KProperty<*>, value: Int) { record(p) }
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}
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object AnyHandler {
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operator fun getValue(t: Any?, p: KProperty<*>): Any? { record(p); return 3.14 }
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operator fun setValue(t: Any?, p: KProperty<*>, value: Any?) { record(p) }
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}
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object StringHandler {
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operator fun getValue(t: Any?, p: KProperty<*>): String { record(p); return p.name }
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operator fun setValue(t: Any?, p: KProperty<*>, value: String) { record(p) }
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}
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fun box(): String {
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val a = A()
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a.foo = 42
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a.foo = a.foo + baz.length
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a.foo = 239
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A.bar = baz + a.foo
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baz + A.bar
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if (metadatas.keys.size != 3)
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return "Fail: only three instances of KProperty should have been created\n${metadatas.keys}"
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return "OK"
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}
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