content: /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
   * This file is part of Beaver Parser Generator.                       *
   * Copyright (C) 2003,2004 Alexander Demenchuk <alder@softanvil.com>.  *
   * All rights reserved.                                                *
   * See the file "LICENSE" for the terms and conditions for copying,    *
   * distribution and modification of Beaver.                            *
   * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  
  package beaver;
  
  import java.io.IOException;
  
  
  
  /**
   * Defines an interface expected by a generated parser.
   */
  public abstract class Scanner
  {
  	public static class Exception extends java.lang.Exception
  	{
  		private static final long serialVersionUID = 1L;
  		public final int line;
  		public final int column;
  		
  		public Exception(String msg)
  		{
  			this(0, 0, msg);
  		}
  		
  		public Exception(int line, int column, String msg)
  		{
  			super(msg);
  			this.line = line;
  			this.column = column;
  		}
  	}
  
  	public abstract Symbol nextToken() throws IOException, Scanner.Exception;
  }
  