I've just uploaded a new version of syntactic:
http://hackage.haskell.org/package/syntactic
The most important change is that I've added observable sharing based on
StableNames. The implementation and interface are conceptually quite
similar to Andy Gill's data-reify.
The library offers both referentially transparent common sub-expression
elimination (that uses a combination of hashing and observable sharing
under the hood), as well as direct observation of sharing. The
difference between the two flavors is demonstrated in the accompanied file:
Examples/NanoFeldspar/Test.hs
(See test7_X.)
Still missing a way to rebuild an expression with let bindings from the
syntax graphs. This is ongoing work.
/ Emil
_______________________________________________
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe
