a partial support for def rules in the C runtime

The def rules are now compiled to byte code by the compiler and then to
native code by the JIT compiler in the runtime. Not all constructions
are implemented yet. The partial implementation is now in the repository
but it is not activated by default since this requires changes in the
PGF format. I will enable it only after it is complete.

src/runtime/haskell/PGF/Macros.hs

@@ -21,18 +21,13 @@ mapConcretes f pgf = pgf { concretes = Map.map f (concretes pgf) }
 lookType :: Abstr -> CId -> Type
 lookType abs f = 
   case lookMap (error $ "lookType " ++ show f) f (funs abs) of
-    (ty,_,_,_,_) -> ty
-
-lookDef :: Abstr -> CId -> Maybe [Equation]
-lookDef abs f = 
-  case lookMap (error $ "lookDef " ++ show f) f (funs abs) of
-    (_,a,eqs,_,_) -> eqs
+    (ty,_,_,_) -> ty
 
 isData :: Abstr -> CId -> Bool
 isData abs f =
   case Map.lookup f (funs abs) of
-    Just (_,_,Nothing,_,_) -> True       -- the encoding of data constrs
-    _                      -> False
+    Just (_,_,Nothing,_) -> True       -- the encoding of data constrs
+    _                    -> False
 
 lookValCat :: Abstr -> CId -> CId
 lookValCat abs = valCat . lookType abs
@@ -65,9 +60,9 @@ lookConcrFlag pgf lang f = Map.lookup f $ cflags $ lookConcr pgf lang
 
 functionsToCat :: PGF -> CId -> [(CId,Type)]
 functionsToCat pgf cat =
-  [(f,ty) | (_,f) <- fs, Just (ty,_,_,_,_) <- [Map.lookup f $ funs $ abstract pgf]]
+  [(f,ty) | (_,f) <- fs, Just (ty,_,_,_) <- [Map.lookup f $ funs $ abstract pgf]]
  where 
-   (_,fs,_,_) = lookMap ([],[],0,0) cat $ cats $ abstract pgf
+   (_,fs,_) = lookMap ([],[],0) cat $ cats $ abstract pgf
 
 -- | List of functions that lack linearizations in the given language.
 missingLins :: PGF -> Language -> [CId]
@@ -82,7 +77,7 @@ restrictPGF :: (CId -> Bool) -> PGF -> PGF
 restrictPGF cond pgf = pgf {
   abstract = abstr {
     funs = Map.filterWithKey (\c _ -> cond c) (funs abstr),
-    cats = Map.map (\(hyps,fs,p,addr) -> (hyps,filter (cond . snd) fs,p,addr)) (cats abstr)
+    cats = Map.map (\(hyps,fs,p) -> (hyps,filter (cond . snd) fs,p)) (cats abstr)
     }
   }  ---- restrict concrs also, might be needed
  where