dk.brics.automaton gets into infinite looping when given regex "a.b"?

Question

I am wondering what metacharacters does dk.brics.automaton support.

Does it even not support . operator? When I give a.b to it, it gets into infinite loop until Err: OutOfMemory.

Is there any alternative to get the same purpose as .?

If you have ideas of which operators does dk.brics.automaton support, please help list them here.

You must have worked much on dk.brics.automaton . I am new to it and want to use it to compute the number of DFA states , transitions and memory taken by each state.Do you think this tool will help me in achieving these tasks? — Xara, Jun 17 '13 at 14:35

score 1 · Accepted Answer · answered Mar 13 '13 at 19:54

1

According to the grammar (http://www.brics.dk/automaton/doc/dk/brics/automaton/RegExp.html), that should work. Perhaps some of your code would help.

answered Mar 13 '13 at 19:54

Marc Shapiro

Thanks! It should be my problem. The original version does work well with `.`. – JackWM Mar 13 '13 at 20:17

1 Answers1