code: /**
   * Copyright (c) 2004-2005, Regents of the University of California
   * 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 University of California, Los Angeles 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.
   */
  
  package cck.parser;
  
  /**
   * This class is used to unify the Token classes from all JavaCC-generated parsers.
   *
   * @author Ben L. Titzer
   */
  public abstract class AbstractToken {
      /**
       * beginLine and beginColumn describe the position of the first character of this token; endLine and
       * endColumn describe the position of the last character of this token.
       */
      public int beginLine, beginColumn, endLine, endColumn;
  
      /**
       * The string image of the token.
       */
      public String image;
  
      /**
       * The file in which the token originated.
       */
      public String file;
  
      /**
       * Returns the image.
       */
      public String toString() {
          return image;
      }
  
      public abstract AbstractToken getNextToken();
  
      public SourcePoint getSourcePoint() {
          return new SourcePoint(file, beginLine, endLine, beginColumn, endColumn);
      }
  
      public SourcePoint asSourcePoint(String f) {
          return new SourcePoint(f, beginLine, endLine, beginColumn, endColumn);
      }
  
      public static AbstractToken newToken(String img, SourcePoint pt) {
          AbstractToken t = new AbstractToken() {
              public AbstractToken getNextToken() { return null; }
          };
          t.image = img;
          if ( pt != null ) {
              t.file = pt.file;
              t.beginLine = pt.beginLine;
              t.beginColumn = pt.beginColumn;
              t.endLine = pt.endLine;
              t.endColumn = pt.endColumn;
          }
          return t;
      }
  }
  