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Java > Open Source Codes > com > genimen > djeneric > repository > oql > core > Token


1 /* Generated By:JavaCC: Do not edit this line. Token.java Version 3.0 */
2 package com.genimen.djeneric.repository.oql.core;
3
4 /**
5  * Describes the input token stream.
6  */
7
8 public class Token
9 {
10
11   /**
12    * An integer that describes the kind of this token. This numbering
13    * system is determined by JavaCCParser, and a table of these numbers is
14    * stored in the file ...Constants.java.
15    */
16   public int kind;
17
18   /**
19    * beginLine and beginColumn describe the position of the first character
20    * of this token; endLine and endColumn describe the position of the
21    * last character of this token.
22    */
23   public int beginLine, beginColumn, endLine, endColumn;
24
25   /**
26    * The string image of the token.
27    */
28   public String JavaDoc image;
29
30   /**
31    * A reference to the next regular (non-special) token from the input
32    * stream. If this is the last token from the input stream, or if the
33    * token manager has not read tokens beyond this one, this field is
34    * set to null. This is true only if this token is also a regular
35    * token. Otherwise, see below for a description of the contents of
36    * this field.
37    */
38   public Token next;
39
40   /**
41    * This field is used to access special tokens that occur prior to this
42    * token, but after the immediately preceding regular (non-special) token.
43    * If there are no such special tokens, this field is set to null.
44    * When there are more than one such special token, this field refers
45    * to the last of these special tokens, which in turn refers to the next
46    * previous special token through its specialToken field, and so on
47    * until the first special token (whose specialToken field is null).
48    * The next fields of special tokens refer to other special tokens that
49    * immediately follow it (without an intervening regular token). If there
50    * is no such token, this field is null.
51    */
52   public Token specialToken;
53
54   /**
55    * Returns the image.
56    */
57   public String JavaDoc toString()
58   {
59     return image;
60   }
61
62   /**
63    * Returns a new Token object, by default. However, if you want, you
64    * can create and return subclass objects based on the value of ofKind.
65    * Simply add the cases to the switch for all those special cases.
66    * For example, if you have a subclass of Token called IDToken that
67    * you want to create if ofKind is ID, simlpy add something like :
68    *
69    * case MyParserConstants.ID : return new IDToken();
70    *
71    * to the following switch statement. Then you can cast matchedToken
72    * variable to the appropriate type and use it in your lexical actions.
73    */
74   public static final Token newToken(int ofKind)
75   {
76     switch (ofKind)
77     {
78       default :
79         return new Token();
80     }
81   }
82
83 }
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