content: /*
   * $Header$
   * $Revision$
   * $Date$
   *
   * ====================================================================
   *
   * Copyright 2000-2004 bob mcwhirter & James Strachan.
   * All rights reserved.
   *
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   * 
   *   * Redistributions of source code must retain the above copyright
   *     notice, this list of conditions and the following disclaimer.
   * 
   *   * 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.
   * 
   *   * Neither the name of the Jaxen Project nor the names of its
   *     contributors may be used to endorse or promote products derived 
   *     from this software without specific prior written permission.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
   * IS" AND ANY EXPRESS 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 COPYRIGHT OWNER
   * OR 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 Jaxen Project and was originally
   * created by bob mcwhirter <bob@werken.com> and
   * James Strachan <jstrachan@apache.org>.  For more information on the
   * Jaxen Project, please see <http://www.jaxen.org/>.
   *
   * $Id$
   */
  
  package org.jaxen.saxpath.base;
  
  
  class TokenTypes
  {
      static final int EOF   = -1;
      static final int SKIP  = -2;
      static final int ERROR = -3;
  
      static final int EQUALS = 1;
      static final int NOT_EQUALS = 2;
      
      static final int LESS_THAN_SIGN = 3;
      static final int LESS_THAN_OR_EQUALS_SIGN = 4;
      static final int GREATER_THAN_SIGN = 5;
      static final int GREATER_THAN_OR_EQUALS_SIGN = 6;  
      
      static final int PLUS  = 7;
      static final int MINUS = 8;
      static final int STAR  = 9;
      static final int MOD   = 10;
      static final int DIV   = 11;
      
      static final int SLASH = 12;
      static final int DOUBLE_SLASH = 13;
      static final int DOT = 14;
      static final int DOT_DOT = 15;
  
      static final int IDENTIFIER = 16;
  
      static final int AT = 17;
      static final int PIPE = 18;
      static final int COLON = 19;
      static final int DOUBLE_COLON = 20;
      
      static final int LEFT_BRACKET = 21;
      static final int RIGHT_BRACKET = 22;    
      static final int LEFT_PAREN = 23;
      static final int RIGHT_PAREN = 24;
  
      // 25 was NOT but there is no such token in XPath
      static final int DOLLAR = 25;
      static final int LITERAL = 26;
      static final int AND = 27;
      static final int OR = 28;
  
      // No need for an integer token type. All numbers
      // in XPath are doubles.
      static final int DOUBLE = 29;
      static final int COMMA = 30;
      // split star into two token types
      static final int STAR_OPERATOR = 31;
  
      static String getTokenText( int tokenType )
      {
          switch( tokenType )
          {
              case ERROR:
                  return "(error)";
              case SKIP:
                  return "(skip)";
              case EOF:
                  return "(eof)";
              case 0:
                  return "Unrecognized token type: 0";
              case EQUALS:
                  return "=";
              case NOT_EQUALS:
                  return "!=";
              case LESS_THAN_SIGN:
                  return "<";
              case LESS_THAN_OR_EQUALS_SIGN:
                  return "<=";
              case GREATER_THAN_SIGN:
                  return ">";
              case GREATER_THAN_OR_EQUALS_SIGN:
                  return ">=";
              case PLUS:
                  return "+";
              case MINUS:
                  return "-";
              case STAR:
                  return "*";
              case STAR_OPERATOR:
                      return "*";
              case DIV:
                  return "div";
              case MOD:
                  return "mod";
              case SLASH:
                  return "/";
              case DOUBLE_SLASH:
                  return "//";
              case DOT:
                  return ".";
              case DOT_DOT:
                  return "..";
              case IDENTIFIER:
                  return "(identifier)";
              case AT:
                  return "@";
              case PIPE:
                  return "|";
              case COLON:
                  return ":";
              case DOUBLE_COLON:
                  return "::";
              case LEFT_BRACKET:
                  return "[";
              case RIGHT_BRACKET:
                  return "]";
              case LEFT_PAREN:
                  return "(";
              case RIGHT_PAREN:
                  return ")";
              case DOLLAR:
                  return "$";
              case LITERAL:
                  return "(literal)";
              case AND:
                  return "and";
              case OR:
                  return "or";
              case DOUBLE:
                  return "(double)";
              case COMMA:
                  return ",";
              default:
                  // This method is only called from an error handler, and only
                  // to provide an exception message. In other words, the string
                  // returned by this method is only used in an exception message.
                  // Something has already gone wrong, and is being reported.
                  // Thus there's no real reason to throw another exception here.
                  // Just return a string and this message will be reported in an
                  // exception anyway.
                  return("Unrecognized token type: " + tokenType);
          }
      }
  }
  