some more refactoring

src/GF/Compile/TC.hs

@@ -16,7 +16,6 @@ module GF.Compile.TC (AExp(..),
 	   Theory,
 	   checkExp,
 	   inferExp,
-           checkEqs,
 	   eqVal,
 	   whnf
 	  ) where
@@ -122,12 +121,11 @@ checkExp th tenv@(k,rho,gamma) e ty = do
 	return (AAbs x a' t', cs)
       _ -> prtBad ("function type expected for" +++ prt e +++ "instead of") typ
 
--- {- --- to get deprec when checkEqs works (15/9/2005)
     Eqs es -> do
       bcs <- mapM (\b -> checkBranch th tenv b typ) es
       let (bs,css) = unzip bcs
       return (AEqs bs, concat css) 
--- - }
+
     Prod x a b -> do
       testErr (typ == vType) "expected Type"
       (a',csa) <- checkType th tenv a
@@ -164,43 +162,6 @@ inferExp th tenv@(k,rho,gamma) e = case e of
       _ -> prtBad ("Prod expected for function" +++ prt f +++ "instead of") typ
    _ -> prtBad "cannot infer type of expression" e
 
-checkEqs :: Theory -> TCEnv -> (Fun,Term) -> Val -> Err [(Val,Val)]
-checkEqs th tenv@(k,rho,gamma) (fun@(m,f),def) val = case def of
-  Eqs es -> liftM concat $ mapM checkBranch es
-  _      -> liftM snd $ checkExp th tenv def val
- where
-  checkBranch (ps,df) = 
-   let
-      (ps',_,vars) = foldr p2t ([],0,[]) ps
-      fps        = mkApp (Q m f) ps'
-   in errIn ("branch" +++ prt fps) $ do
-    (aexp, typ, cs1) <- inferExp th tenv fps
-    let
-      bds = binds vars aexp 
-      tenv' = (k, rho, bds ++ gamma) 
-    (_,cs2)  <- errIn (show bds) $ checkExp th tenv' df typ
-    return $ (cs1 ++ cs2)
-  p2t p (ps,i,g) = case p of
-     PW      -> (Meta (MetaSymb i) : ps, i+1,        g) 
-     PV IW   -> (Meta (MetaSymb i) : ps, i+1,        g) 
-     PV x    -> (Meta (MetaSymb i) : ps, i+1,upd x i g)
-     PString s -> (            K s : ps, i,          g)
-     PInt n -> (EInt n : ps, i, g)
-     PFloat n -> (EFloat n : ps, i, g)
-     PP m c xs -> (mkApp (qq (m,c)) xss : ps, i', g') 
-                    where (xss,i',g') = foldr p2t ([],i,g) xs
-     _ -> error $ "undefined p2t case" +++ prt p +++ "in checkBranch"
-  upd x i g = (x,i) : g --- to annotate pattern variables: treat as metas
-  
-  -- notice: in vars, the sequence 0.. is sorted. In subst aexp, all
-  -- this occurs and nothing else.
-  binds vars aexp = [(x,v) | ((x,_),v) <- zip vars metas] where
-    metas = map snd $ sortBy (\ (x,_) (y,_) -> compare x y) $ subst aexp
-  subst aexp = case aexp of
-   AMeta (MetaSymb i) v -> [(i,v)]
-   AApp  c a _ -> subst c ++ subst a
-   _ -> [] -- never matter in patterns
-
 checkBranch :: Theory -> TCEnv -> Equation -> Val -> Err (([Exp],AExp),[(Val,Val)])
 checkBranch th tenv b@(ps,t) ty = errIn ("branch" +++ show b) $ 
                                   chB tenv' ps' ty