org.jetbrains.kotlin.cli.jvm.plugins.PluginURLClassLoader.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2017 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.kotlin.cli.jvm.plugins
import java.net.URL
import java.net.URLClassLoader
import java.util.*
internal class PluginURLClassLoader(urls: Array, parent: ClassLoader) : ClassLoader(Thread.currentThread().contextClassLoader) {
private val childClassLoader: SelfThenParentURLClassLoader = SelfThenParentURLClassLoader(urls, parent)
@Synchronized
override fun loadClass(name: String, resolve: Boolean): Class<*> {
return try {
childClassLoader.findClass(name)
}
catch (e: ClassNotFoundException) {
super.loadClass(name, resolve)
}
}
override fun getResources(name: String): Enumeration = childClassLoader.getResources(name)
private class SelfThenParentURLClassLoader(urls: Array, private val onFail: ClassLoader) : URLClassLoader(urls, null) {
public override fun findClass(name: String): Class<*> {
val loaded = findLoadedClass(name)
if (loaded != null) {
return loaded
}
return try {
super.findClass(name)
}
catch (e: ClassNotFoundException) {
onFail.loadClass(name)
}
}
}
}