[exim] self-describing ACLs?

Hi,

I'm kind of new to exim so apologies if this has been beat to death.

Is it possible to write self-describing ACLs? With the static config file
ACL syntax, it seems that I have to write conditional comparison queries
for every possible "accept" "deny" "defer" etc since there can only be a
positive match that's meaningful (IE, have a conditional block lookup for
"accept" in a file in order to match an accept ACL, then have another
conditional block lookup for "deny" in a file, even though its the same
code). I would prefer to have one block that spits up an "accept" or
"deny" and then have exim use the result as the ACL, if possible.

-- 
Eric A. Hall                                  http://www.eric-a-hall.com/
Network Technology Research Group                    http://www.ntrg.com/
Internet Core Protocols          http://www.oreilly.com/catalog/coreprot/