4 commits

Author	SHA1	Message	Date
Max Brunsfeld	8a0a442a24	Make more things immutable	2013-11-13 20:22:06 -08:00
Max Brunsfeld	f7063ba1d8	Compute closure of item sets under symbol expansion	2013-11-12 18:45:04 -08:00
Max Brunsfeld	6bbaba3ef8	Fix stream operator on rules and items	2013-11-12 08:17:19 -08:00
Max Brunsfeld	11e3980319	Add helper functions for making shared pointers to rules ... - start work on item set class	2013-11-10 14:59:40 -08:00