At first I had a version that wasn't using classes but it was sort of ugly as we have relatively large state (current_states, final_states, transitions) and you

At first I had a version that wasn't using classes but it was sort of ugly as we have relatively large state (current_states, final_states, transitions) and you have to pass it along to every other function. It looks a little bit ugly: https://gist.github.com/1377685 https://gist.github.com/1377685 Actually I'm a big fan of using plain functions whenever possible but in this case it doesn't seem to be a right solution