This directory 
http://www.ccs.neu.edu/research/demeter/nu-impls/Flavors/
is set up as a resting place for the Demeter/Flavors system.  Any
comments/questions should be directed to Karl Lieberherr.

The Demeter/Flavors tool:
http://www.ccs.neu.edu/research/demeter/nu-impls/Flavors/

Note:
http://www.ccs.neu.edu/research/demeter/nu-impls/Flavors/demeter-generation-env/generic-software/

which contains a generic editor, generic parser and generic printer.

http://www.ccs.neu.edu/research/demeter/nu-impls/Flavors/demeter-c++-env/dh-gen-parser/Dh_grammar.c

seems to be a generic parser written in C++.