Snake.java

/*
 * SPDX-License-Identifier: Apache-1.1
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 * Copyright (c) 1999-2003 The Apache Software Foundation.
 * Copyright (c) 1996-2006 Juancarlo Añez
 * Copyright (c) 2010 Dmitry Naumenko (dm.naumenko@gmail.com)
 * Copyright (c) 2015-2016 Brenden Kromhout and contributors to java-diff-utils
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package difflib.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}.
 *
 * @author <a href="mailto:juanco@suigeneris.org">Juanco Anez</a>
 *
 */
public final class Snake extends PathNode {
    /**
     * Constructs a snake node.
     *
     * @param i position in the original sequence
     * @param j 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;
    }
    
}