001/*
002// $Id: NodeType.java 3 2009-05-11 08:11:57Z jhyde $
003// Clapham generates railroad diagrams to represent computer language grammars.
004// Copyright (C) 2008-2009 Julian Hyde
005//
006// This program is free software; you can redistribute it and/or modify it
007// under the terms of the GNU General Public License as published by the Free
008// Software Foundation; either version 2 of the License, or (at your option)
009// any later version approved by The Eigenbase Project.
010//
011// This program is distributed in the hope that it will be useful,
012// but WITHOUT ANY WARRANTY; without even the implied warranty of
013// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
014// GNU General Public License for more details.
015//
016// You should have received a copy of the GNU General Public License
017// along with this program; if not, write to the Free Software
018// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
019*/
020package net.hydromatic.clapham.graph;
021
022/**
023 * Constants for node kinds.
024 *
025 * @author jhyde
026 * @version $Id: NodeType.java 3 2009-05-11 08:11:57Z jhyde $
027 * @since Aug 26, 2008
028*/
029public enum NodeType {
030    TERM,  // terminal symbol
031    NONTERM,  // nonterminal symbol
032    EPS,  // empty
033    ALT,  // alternative: |
034    ITER,  // iteration: { }
035    OPT,  // option: [ ]
036    RERUN,  // the optimization of: a {a} or a {b a}
037    WRAP  // forces line break if found in the outer structure
038}
039
040// End NodeType.java