Main Page   Packages   Class Hierarchy   Alphabetical List   Compound List   File List   Compound Members  

Token.java

00001 package edu.ksu.cis.bandera.abstraction.predicate.parser;
00002 
00003 /* Generated By:JavaCC: Do not edit this line. Token.java Version 0.7pre3 */
00004 /**
00005  * Describes the input token stream.
00006  */
00007 public class Token {
00008 
00009   /**
00010    * An integer that describes the kind of this token.  This numbering
00011    * system is determined by JavaCCParser, and a table of these numbers is
00012    * stored in the file ...Constants.java.
00013    */
00014   public int kind;
00015 
00016   /**
00017    * beginLine and beginColumn describe the position of the first character
00018    * of this token; endLine and endColumn describe the position of the
00019    * last character of this token.
00020    */
00021   public int beginLine, beginColumn, endLine, endColumn;
00022 
00023   /**
00024    * The string image of the token.
00025    */
00026   public String image;
00027 
00028   /**
00029    * A reference to the next regular (non-special) token from the input
00030    * stream.  If this is the last token from the input stream, or if the
00031    * token manager has not read tokens beyond this one, this field is
00032    * set to null.  This is true only if this token is also a regular
00033    * token.  Otherwise, see below for a description of the contents of
00034    * this field.
00035    */
00036   public Token next;
00037 
00038   /**
00039    * This field is used to access special tokens that occur prior to this
00040    * token, but after the immediately preceding regular (non-special) token.
00041    * If there are no such special tokens, this field is set to null.
00042    * When there are more than one such special token, this field refers
00043    * to the last of these special tokens, which in turn refers to the next
00044    * previous special token through its specialToken field, and so on
00045    * until the first special token (whose specialToken field is null).
00046    * The next fields of special tokens refer to other special tokens that
00047    * immediately follow it (without an intervening regular token).  If there
00048    * is no such token, this field is null.
00049    */
00050   public Token specialToken;
00051 
00052   /**
00053    * Returns a new Token object, by default. However, if you want, you
00054    * can create and return subclass objects based on the value of ofKind.
00055    * Simply add the cases to the switch for all those special cases.
00056    * For example, if you have a subclass of Token called IDToken that
00057    * you want to create if ofKind is ID, simlpy add something like :
00058    *
00059    *    case MyParserConstants.ID : return new IDToken();
00060    *
00061    * to the following switch statement. Then you can cast matchedToken
00062    * variable to the appropriate type and use it in your lexical actions.
00063    */
00064   public static final Token newToken(int ofKind)
00065   {
00066      switch(ofKind)
00067      {
00068        default : return new Token();
00069      }
00070   }  
00071   /**
00072    * Returns the image.
00073    */
00074   public final String toString()
00075   {
00076      return image;
00077   }  
00078 }

Generated at Thu Feb 7 06:57:37 2002 for Bandera by doxygen1.2.10 written by Dimitri van Heesch, © 1997-2001