Sorry, I meant *getkey* directive. Uh oh, I'm getting the keywords of my own language wrong. That's embarrassing!
-Adrian Adrian Thurston wrote: > Ah, you can process at the bit level. See attached code. You'll probably > want to scrutinize the generated and compiled code to see if it's good > enough for your needs. One thing to note about using the getchar > directive is that the expression can be evaluated more than once per > value of p and if the compiler doesn't optimize that duplicate work away > then your code won't be optimal. > > By the way, I'm not sure if I just figured this out now, or if somebody > told me about this technique a while back and I forgot. (Bob maybe?) > > -Adrian > > Jan Sporbeck wrote: >> Hello there! >> >> I'd like to use ragel to design the state machine for a microcontroller >> project (avr atmega8535) written in C. >> >> I think I understand how to use it for streams of char, int, etc. But >> what's the best practice to use for bit based decisions? >> >> I could use union..struct to pack all bits in one datatype and process >> that. But I doubt that'll yield a performant implementation. >> >> I read messages on this list that ragel is used for uC projects, but no >> details how. >> >> So any hints or example code to get me started is appreciated. >> >> Thanks in advance, >> /Jan. >> >> >> _______________________________________________ >> ragel-users mailing list >> [email protected] >> http://www.complang.org/mailman/listinfo/ragel-users > > > ------------------------------------------------------------------------ > > _______________________________________________ > ragel-users mailing list > [email protected] > http://www.complang.org/mailman/listinfo/ragel-users _______________________________________________ ragel-users mailing list [email protected] http://www.complang.org/mailman/listinfo/ragel-users
