TLexer.g revision 324c4644fee44b9898524c09511bd33c3f12e2df 
1// This is a sample lexer generated by the ANTLR3 Maven Archetype
2// generator. It shows how to use a superclass to implement
3// support methods and variables you may use in the lexer actions
4// rather than create a messy lexer that has the Java code embedded
5// in it.
6//
7
8lexer grammar TLexer;
9
10options {
11
12   language=Java;  // Default
13
14   // Tell ANTLR to make the generated lexer class extend the
15   // the named class, which is where any supporting code and 
16   // variables will be placed.
17   //
18   superClass = AbstractTLexer;
19}
20
21// What package should the generated source exist in?
22//
23@header {
24
25    package ${package};
26}
27
28// This is just a simple lexer that matches the usual suspects
29//
30
31KEYSER : 'Keyser' ;
32SOZE   : 'Soze' ;
33
34ADD : '+' ;
35SEMI: ';' ;
36
37ID  :	('a'..'z'|'A'..'Z'|'_') ('a'..'z'|'A'..'Z'|'0'..'9'|'_')*
38    ;
39
40INT :	'0'..'9'+
41    ;
42
43COMMENT
44    :   '//' ~('\n'|'\r')* '\r'? '\n' {skip();}
45    |   '/*' ( options {greedy=false;} : . )* '*/' {skip();}
46    ;
47
48WS  :   ( ' '
49        | '\t'
50        | '\r'
51        | '\n'
52        ) {skip();}
53    ;
54
55STRING
56    :  '"' ( ESC_SEQ | ~('\\'|'"') )* '"'
57    ;
58
59fragment
60HEX_DIGIT : ('0'..'9'|'a'..'f'|'A'..'F') ;
61
62fragment
63ESC_SEQ
64    :   '\\' ('b'|'t'|'n'|'f'|'r'|'\"'|'\''|'\\')
65    |   UNICODE_ESC
66    |   OCTAL_ESC
67    ;
68
69fragment
70OCTAL_ESC
71    :   '\\' ('0'..'3') ('0'..'7') ('0'..'7')
72    |   '\\' ('0'..'7') ('0'..'7')
73    |   '\\' ('0'..'7')
74    ;
75
76fragment
77UNICODE_ESC
78    :   '\\' 'u' HEX_DIGIT HEX_DIGIT HEX_DIGIT HEX_DIGIT
79    ;
80
81