ClassUtils.java

/**
 * This file Copyright (c) 2005-2010 Aptana, Inc. This program is
 * dual-licensed under both the Aptana Public License and the GNU General
 * Public license. You may elect to use one or the other of these licenses.
 * 
 * This program is distributed in the hope that it will be useful, but
 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
 * NONINFRINGEMENT. Redistribution, except as permitted by whichever of
 * the GPL or APL you select, is prohibited.
 *
 * 1. For the GPL license (GPL), you can redistribute and/or modify this
 * program under the terms of the GNU General Public License,
 * Version 3, as published by the Free Software Foundation.  You should
 * have received a copy of the GNU General Public License, Version 3 along
 * with this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 * 
 * Aptana provides a special exception to allow redistribution of this file
 * with certain other free and open source software ("FOSS") code and certain additional terms
 * pursuant to Section 7 of the GPL. You may view the exception and these
 * terms on the web at http://www.aptana.com/legal/gpl/.
 * 
 * 2. For the Aptana Public License (APL), this program and the
 * accompanying materials are made available under the terms of the APL
 * v1.0 which accompanies this distribution, and is available at
 * http://www.aptana.com/legal/apl/.
 * 
 * You may view the GPL, Aptana's exception and additional terms, and the
 * APL in the file titled license.html at the root of the corresponding
 * plugin containing this source file.
 * 
 * Any modifications to this file must keep this entire header intact.
 */

package com.aptana.ide.core;

import java.util.ArrayList;
import java.util.List;

/**
 * @author Max Stepanov
 *
 */
public final class ClassUtils {

	/**
	 * 
	 */
	private ClassUtils() {
	}
	
	public static List<Class<?>> getClassesTree(Class<?> clazz) {
		List<Class<?>> classes = new ArrayList<Class<?>>();
		classes.add(clazz);
		if (clazz.isInterface()) {
			processInterface(clazz, classes);
		} else {
			processClass(clazz, classes);
		}
		return classes;
	}

	
	private static void processClass(Class<?> clazz, List<Class<?>> classes) {
		Class<?>[] interfaces = clazz.getInterfaces();
		for (Class<?> i : interfaces) {
			if (!classes.contains(i)) {
				classes.add(i);
				processInterface(i, classes);
			}
		}
		Class<?> superClass = clazz.getSuperclass();
		if (superClass != null && !classes.contains(superClass)) {
			classes.add(superClass);
			processClass(superClass, classes);
		}
	}

	private static void processInterface(Class<?> clazz, List<Class<?>> classes) {
		Class<?>[] interfaces = clazz.getInterfaces();
		for (Class<?> i : interfaces) {
			if (!classes.contains(i)) {
				classes.add(i);
				processInterface(i, classes);
			}
		}
	}

}