org.apache.commons.jrcs.diff.myers.Snake Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of sakai-rwiki-diff Show documentation
This project creates the diff library used by RWiki
The newest version!
/*
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999-2003 The Apache Software Foundation.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowledgement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgement may appear in the software itself,
 *    if and wherever such third-party acknowledgements normally appear.
 *
 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact [email protected].
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 *
 */

package org.apache.commons.jrcs.diff.myers;

/**
 * Represents a snake in a diffpath.
 * 
 * {@link DiffNode DiffNodes} and {@link Snake Snakes} allow for compression of
 * diffpaths, as each snake is represented by a single {@link Snake Snake} node
 * and each contiguous series of insertions and deletions is represented by a
 * single {@link DiffNode DiffNodes}.
 * 
 * @version $Revision$ $Date: 2006-04-12 18:30:19 +0100 (Wed, 12 Apr
 *          2006) $
 * @author Juanco Anez
 */
public final class Snake extends PathNode
{
	/**
	 * Constructs a snake node.
	 * 
	 * @param the
	 *        position in the original sequence
	 * @param the
	 *        position in the revised sequence
	 * @param prev
	 *        the previous node in the path.
	 */
	public Snake(int i, int j, PathNode prev)
	{
		super(i, j, prev);
	}

	/**
	 * {@inheritDoc}
	 * 
	 * @return true always
	 */
	public boolean isSnake()
	{
		return true;
	}

}