56 lines
1.9 KiB
Kotlin
56 lines
1.9 KiB
Kotlin
package org.openrndr.extra.olive
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import mu.KotlinLogging
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import kotlin.reflect.KMutableProperty1
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import kotlin.reflect.KProperty1
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import kotlin.reflect.full.declaredMemberProperties
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import kotlin.reflect.jvm.jvmName
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private val logger = KotlinLogging.logger {}
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private val store = mutableMapOf<String, Any>()
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/**
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* Clear reloadable values
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*/
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fun clearReloadables() {
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store.clear()
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}
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/**
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* A class with which persistent state can be reloaded from inside Olive scripts.
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*/
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open class Reloadable {
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private fun normalizeClassName(name: String): String {
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return name.replace(Regex("ScriptingHost[0-9a-f]+_"), // -- since kotlin 1.3.61 the scripting host prepends class names with the host id
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"").replace(Regex("Line_[0-9]+"),"") // -- when reusing the script engine the line number increments.
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}
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/**
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* reload property values from store
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*/
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@Suppress("UNCHECKED_CAST")
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fun reload() {
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val className = normalizeClassName(this::class.jvmName)
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val existing = store[className]
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if (existing != null) {
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for (p in this::class.declaredMemberProperties) {
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val e = existing::class.declaredMemberProperties.find { it.name == p.name }
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if (e != null) {
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try {
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val value = (e as KProperty1<Any, Any?>).get(existing)
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val mp = (p as KMutableProperty1<Any, Any?>)
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mp.set(this, value as Any)
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logger.info("reloaded property ${p.name} <- ${value}")
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} catch (e: Throwable) {
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logger.warn("error while reloading property ${p.name}: ${e.message}")
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}
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}
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}
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} else {
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logger.info("no existing store found for $className")
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}
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store[normalizeClassName(this::class.jvmName)] = this
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}
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}
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