AntResourcesClassLoader.java

/*
 * Copyright 2000-2009 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.napile.idea.thermit.config.impl;

import java.net.URL;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import com.intellij.openapi.progress.ProgressManager;
import com.intellij.util.lang.UrlClassLoader;

/**
 * @author Eugene Zhuravlev
 *         Date: Oct 21, 2008
 */
public class AntResourcesClassLoader extends UrlClassLoader
{
	private final Set<String> myMisses = new HashSet<String>();

	public AntResourcesClassLoader(final List<URL> urls, final ClassLoader parentLoader, final boolean canLockJars, final boolean canUseCache)
	{
		super(urls, parentLoader, canLockJars, canUseCache, true, false);
	}

	protected Class<?> loadClass(final String name, final boolean resolve) throws ClassNotFoundException
	{
		if(myMisses.contains(name))
		{
			throw new ClassNotFoundException(name);
		}
		return super.loadClass(name, resolve);
	}

	protected Class findClass(final String name) throws ClassNotFoundException
	{
		ProgressManager.checkCanceled();
		try
		{
			return super.findClass(name);
		}
		catch(ClassNotFoundException e)
		{
			myMisses.add(name);
			throw e;
		}
	}
}