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A Kotlin Multiplatform implementation of the Lightning Network

There is a newer version: 1.8.4

package fr.acinq.lightning.utils

import kotlin.native.concurrent.AtomicReference
import kotlin.properties.ReadWriteProperty
import kotlin.reflect.KProperty

internal class AtomicOnce : ReadWriteProperty {
    private val ref = AtomicReference(null)

    override fun getValue(thisRef: Any?, property: KProperty<*>): T {
        return ref.value ?: error("Property ${property.name} should be initialized before get.")
    }

    override fun setValue(thisRef: Any?, property: KProperty<*>, value: T) {
        if (!ref.compareAndSet(null, value)) error("Property ${property.name} has already been initialized.")
    }
}