67 lines
2.3 KiB
Kotlin
67 lines
2.3 KiB
Kotlin
package net.shadowfacts.forgelin
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import net.minecraftforge.fml.common.FMLModContainer
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import net.minecraftforge.fml.common.ILanguageAdapter
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import net.minecraftforge.fml.common.ModContainer
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import net.minecraftforge.fml.relauncher.Side
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import org.apache.logging.log4j.LogManager
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import java.lang.reflect.Field
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import java.lang.reflect.Method
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/**
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* Forge {@link ILanguageAdapter} for Kotlin
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* Usage: Set the {@code modLanguageAdapter} field in your {@code @Mod} annotation to {@code net.shadowfacts.forgelin.KotlinAdapter}
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* @author shadowfacts
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*/
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class KotlinAdapter : ILanguageAdapter {
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private val log = LogManager.getLogger("KotlinAdapter")
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override fun supportsStatics(): Boolean {
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return false
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}
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override fun setProxy(target: Field, proxyTarget: Class<*>, proxy: Any) {
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log.debug("Setting proxy: ${target.declaringClass.simpleName}.${target.name} -> $proxy")
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if (proxyTarget.fields.any { x -> x.name == "INSTANCE" }) {
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// Singleton
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try {
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log.debug("Setting proxy on INSTANCE; singleton target")
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val obj = proxyTarget.getField("INSTANCE").get(null)
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target.set(obj, proxy)
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} catch (e: Exception) {
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throw KotlinAdapterException(e)
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}
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} else {
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target.set(proxyTarget, proxy)
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}
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}
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override fun getNewInstance(container: FMLModContainer, objectClass: Class<*>, classLoader: ClassLoader, factoryMarkedAnnotation: Method?): Any {
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log.debug("FML has asked for ${objectClass.simpleName} to be constructed")
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try {
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// Try looking for an object type
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val f = objectClass.getField("INSTANCE")
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val obj = f.get(null) ?: throw NullPointerException()
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log.debug("Found an object INSTANCE reference in ${objectClass.simpleName}, using that. ${obj}")
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return obj
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} catch (e: Exception) {
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// Try looking for a class type
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log.debug("Failed to get object reference, trying class construction")
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try {
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val obj = objectClass.newInstance() ?: throw NullPointerException()
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log.debug("Constructed an object from a class type ($objectClass), using that. $obj")
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return obj
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} catch (e: Exception) {
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throw KotlinAdapterException(e)
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}
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}
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}
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override fun setInternalProxies(mod: ModContainer?, side: Side?, loader: ClassLoader?) {
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// Nothing to do; FML's got this covered for Kotlin
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}
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private class KotlinAdapterException(e: Exception) : RuntimeException("Kotlin adapter error - do not report to Forge!", e)
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} |