1.INT : '-'? DIGIT+
;
FLOAT
: ('-'|'+')? DIGIT+ '.' DIGIT* (('e' | 'E') ('+' | '-')? (DIGIT)+)?
;
2.
INT_OR_FLOAT
: '-'? DIGIT+ FLOAT?
;
fragment
FLOAT
: '.' DIGIT* EXPONENT?
;
fragment
EXPONENT: ('e' | 'E') ('+' | '-')? (DIGIT)+;
Which one is quicker?
I think the 2th is quicker. Because in the 1st lex rule, A DFA is needed to
predict if it is a INT or FLOAT.
Am I right?
Thanks
Best Regards,
Young
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