01: /* Generated By:JavaCC: Do not edit this line. Token.java Version 3.0 */
02: package jaxx.parser;
03:
04: /**
05: * Describes the input token stream.
06: */
07:
08: public class Token {
09: /**
10: * An integer that describes the kind of this token. This numbering
11: * system is determined by JavaCCParser, and a table of these numbers is
12: * stored in the file ...Constants.java.
13: */
14: public int kind;
15:
16: /**
17: * beginLine and beginColumn describe the position of the first character
18: * of this token; endLine and endColumn describe the position of the
19: * last character of this token.
20: */
21: public int beginLine, beginColumn, endLine, endColumn;
22:
23: /**
24: * The string image of the token.
25: */
26: public String image;
27:
28: /**
29: * A reference to the next regular (non-special) token from the input
30: * stream. If this is the last token from the input stream, or if the
31: * token manager has not read tokens beyond this one, this field is
32: * set to null. This is true only if this token is also a regular
33: * token. Otherwise, see below for a description of the contents of
34: * this field.
35: */
36: public Token next;
37:
38: /**
39: * This field is used to access special tokens that occur prior to this
40: * token, but after the immediately preceding regular (non-special) token.
41: * If there are no such special tokens, this field is set to null.
42: * When there are more than one such special token, this field refers
43: * to the last of these special tokens, which in turn refers to the next
44: * previous special token through its specialToken field, and so on
45: * until the first special token (whose specialToken field is null).
46: * The next fields of special tokens refer to other special tokens that
47: * immediately follow it (without an intervening regular token). If there
48: * is no such token, this field is null.
49: */
50: public Token specialToken;
51:
52: /**
53: * Returns the image.
54: */
55: public String toString() {
56: return image;
57: }
58:
59: /**
60: * Returns a new Token object, by default. However, if you want, you
61: * can create and return subclass objects based on the value of ofKind.
62: * Simply add the cases to the switch for all those special cases.
63: * For example, if you have a subclass of Token called IDToken that
64: * you want to create if ofKind is ID, simlpy add something like :
65: *
66: * case MyParserConstants.ID : return new IDToken();
67: *
68: * to the following switch statement. Then you can cast matchedToken
69: * variable to the appropriate type and use it in your lexical actions.
70: */
71: public static final Token newToken(int ofKind) {
72: switch (ofKind) {
73: default:
74: return new Token();
75: case JavaParserConstants.RUNSIGNEDSHIFT:
76: case JavaParserConstants.RSIGNEDSHIFT:
77: case JavaParserConstants.GT:
78: return new GTToken();
79: }
80: }
81:
82: public static class GTToken extends Token {
83: int realKind = JavaParserConstants.GT;
84: }
85: }
|