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57
58 package org.apache.commons.jrcs.diff.myers;
59
60 /**
61  * Represents a snake in a diffpath.
62  * <p>
63  *
64  * {@link DiffNode DiffNodes} and {@link Snake Snakes} allow for compression
65  * of diffpaths, as each snake is represented by a single {@link Snake Snake}
66  * node and each contiguous series of insertions and deletions is represented
67  * by a single {@link DiffNode DiffNodes}.
68  *
69  * @version $Revision: 1.1 $ $Date: 2004/10/06 09:47:23 $
70  * @author <a HREF="mailto:juanco@suigeneris.org">Juanco Anez</a>
71  *
72  */
73 public final class Snake
74     extends PathNode
75 {
76     /**
77      * Constructs a snake node.
78      *
79      * @param the position in the original sequence
80      * @param the position in the revised sequence
81      * @param prev the previous node in the path.
82      */
83     public Snake(int i, int j, PathNode prev)
84     {
85         super(i, j, prev);
86     }
87
88     /**
89      * {@inheritDoc}
90      * @return true always
91      */
92     public boolean isSnake()
93     {
94         return true;
95     }
96
97 }
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