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// This is a sample lexer generated by the ANTLR3 Maven Archetype
// generator. It shows how to use a superclass to implement
// support methods and variables you may use in the lexer actions
// rather than create a messy lexer that has the Java code embedded
// in it.
//
lexer grammar TLexer;
options {
language=Java; // Default
// Tell ANTLR to make the generated lexer class extend the
// the named class, which is where any supporting code and
// variables will be placed.
//
superClass = AbstractTLexer;
}
// What package should the generated source exist in?
//
@header {
package ${package};
}
// This is just a simple lexer that matches the usual suspects
//
KEYSER : 'Keyser' ;
SOZE : 'Soze' ;
ADD : '+' ;
SEMI: ';' ;
ID : ('a'..'z'|'A'..'Z'|'_') ('a'..'z'|'A'..'Z'|'0'..'9'|'_')*
;
INT : '0'..'9'+
;
COMMENT
: '//' ~('\n'|'\r')* '\r'? '\n' {skip();}
| '/*' ( options {greedy=false;} : . )* '*/' {skip();}
;
WS : ( ' '
| '\t'
| '\r'
| '\n'
) {skip();}
;
STRING
: '"' ( ESC_SEQ | ~('\\'|'"') )* '"'
;
fragment
HEX_DIGIT : ('0'..'9'|'a'..'f'|'A'..'F') ;
fragment
ESC_SEQ
: '\\' ('b'|'t'|'n'|'f'|'r'|'\"'|'\''|'\\')
| UNICODE_ESC
| OCTAL_ESC
;
fragment
OCTAL_ESC
: '\\' ('0'..'3') ('0'..'7') ('0'..'7')
| '\\' ('0'..'7') ('0'..'7')
| '\\' ('0'..'7')
;
fragment
UNICODE_ESC
: '\\' 'u' HEX_DIGIT HEX_DIGIT HEX_DIGIT HEX_DIGIT
;
|
