[antlr-interest] Which one is quicker?

[chain one]

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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