There is a manual for writing parsers in wisent in the
cedet/semantic/doc directory. Alternately, you could look at one of the
simpler parsers such as the one in cedet/cogre/dot.wy, or
Mathieu Suen wrote:
> I would like to write a semantic parser for pepsi/cola language:
> Where do you suggest me to start for learning the basic, wisent...?