code: def _setup_regex(self):
          
          self.RE_COMMENTS = cache.RE_COMMENTS
          self.RE_MODULE = cache.RE_MODULE
          self.RE_TYPE = cache.RE_TYPE
          self.RE_EXEC = cache.RE_EXEC
          self.RE_MEMBERS = cache.RE_MEMBERS
          self.RE_DEPEND = cache.RE_DEPEND
docs: Sets up the constant regex strings etc. that can be used to
          parse the strings for determining context.