wicket-util/src/main/java/org/apache/wicket/util/diff/myers/Snake.java

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package org.apache.wicket.util.diff.myers;

/**
 * Represents a snake in a diffpath.
 * <p>
 * 
 * {@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: 1.1 $ $Date: 2006/03/12 00:24:21 $
 * @author <a href="mailto:juanco@suigeneris.org">Juanco Anez</a>
 * 
 */
public final class Snake extends PathNode
{
	/**
	 * Constructs a snake node.
	 * 
	 * @param i
	 *            the position in the original sequence
	 * @param j
	 *            the position in the revised sequence
	 * @param prev
	 *            the previous node in the path.
	 */
	public Snake(final int i, final int j, final PathNode prev)
	{
		super(i, j, prev);
	}

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

}