move GF.Devel.GrammarToGFCC to GF.Compile.GrammarToGFCC

1 files changed, 0 insertions, 543 deletions

diff --git a/src-3.0/GF/Devel/GrammarToGFCC.hs b/src-3.0/GF/Devel/GrammarToGFCC.hs
deleted file mode 100644
index 8f6a95c4e..000000000
--- a/src-3.0/GF/Devel/GrammarToGFCC.hs
+++ /dev/null
@@ -1,543 +0,0 @@
-{-# LANGUAGE PatternGuards #-}
-module GF.Devel.GrammarToGFCC (prGrammar2gfcc,mkCanon2gfcc,addParsers) where
-
-import GF.Devel.OptimizeGF (unshareModule)
-
-import GF.Grammar.Grammar
-import qualified GF.Grammar.Lookup as Look
-
-import qualified GF.GFCC.Macros as CM
-import qualified GF.GFCC.DataGFCC as C
-import qualified GF.GFCC.DataGFCC as D
-import GF.GFCC.CId
-import GF.Grammar.Predef
-import qualified GF.Grammar.Abstract as A
-import qualified GF.Grammar.Macros as GM
---import qualified GF.Grammar.Compute as Compute
-import qualified GF.Infra.Modules as M
-import qualified GF.Infra.Option as O
-
-import GF.Conversion.SimpleToFCFG (convertConcrete)
-import GF.Parsing.FCFG.PInfo (buildFCFPInfo)
-import GF.Devel.PrGrammar
-import GF.Devel.PrintGFCC
-import GF.Devel.ModDeps
-import GF.Infra.Ident
-import GF.Infra.Option
-import GF.Data.Operations
-import GF.Text.UTF8
-
-import Data.List
-import Data.Char (isDigit,isSpace)
-import qualified Data.Map as Map
-import qualified Data.ByteString.Char8 as BS
-import Debug.Trace ----
-
--- when developing, swap commenting
-
---traceD s t = trace s t 
-traceD s t = t 
-
-
--- the main function: generate GFCC from GF.
-
-prGrammar2gfcc :: Options -> String -> SourceGrammar -> (String,String)
-prGrammar2gfcc opts cnc gr = (abs,printGFCC gc) where
-  (abs,gc) = mkCanon2gfcc opts cnc gr 
-
-mkCanon2gfcc :: Options -> String -> SourceGrammar -> (String,D.GFCC)
-mkCanon2gfcc opts cnc gr = 
-  (prIdent abs, (canon2gfcc opts pars . reorder abs . canon2canon abs) gr)
-  where
-    abs = err error id $ M.abstractOfConcrete gr (identC (BS.pack cnc))
-    pars = mkParamLincat gr
-
--- Adds parsers for all concretes
-addParsers :: D.GFCC -> D.GFCC
-addParsers gfcc = gfcc { D.concretes = Map.map conv (D.concretes gfcc) }
-  where
-    conv cnc = cnc { D.parser = Just (buildFCFPInfo (convertConcrete (D.abstract gfcc) cnc)) }
-
--- Generate GFCC from GFCM.
--- this assumes a grammar translated by canon2canon
-
-canon2gfcc :: Options -> (Ident -> Ident -> C.Term) -> SourceGrammar -> D.GFCC
-canon2gfcc opts pars cgr@(M.MGrammar ((a,M.ModMod abm):cms)) = 
-  (if (oElem (iOpt "show_canon") opts) then trace (prGrammar cgr) else id) $
-     D.GFCC an cns gflags abs cncs 
- where
-  -- abstract
-  an  = (i2i a)
-  cns = map (i2i . fst) cms
-  abs = D.Abstr aflags funs cats catfuns
-  gflags = Map.fromList [(mkCId fg,x) | Just x <- [getOptVal opts (aOpt fg)]] 
-                                          where fg = "firstlang"
-  aflags = Map.fromList [(mkCId f,x) | Opt (f,[x]) <- M.flags abm]
-  mkDef pty = case pty of
-    Yes t -> mkExp t
-    _ -> CM.primNotion
-
-  -- concretes
-  lfuns = [(f', (mkType ty, mkDef pty)) | 
-             (f,AbsFun (Yes ty) pty) <- tree2list (M.jments abm), let f' = i2i f]
-  funs = Map.fromAscList lfuns
-  lcats = [(i2i c, mkContext cont) |
-                (c,AbsCat (Yes cont) _) <- tree2list (M.jments abm)]
-  cats = Map.fromAscList lcats
-  catfuns = Map.fromList 
-    [(cat,[f | (f, (C.DTyp _ c _,_)) <- lfuns, c==cat]) | (cat,_) <- lcats]
-
-  cncs  = Map.fromList [mkConcr lang (i2i lang) mo | (lang,M.ModMod mo) <- cms]
-  mkConcr lang0 lang mo = 
-      (lang,D.Concr flags lins opers lincats lindefs printnames params fcfg)
-    where
-      js = tree2list (M.jments mo)
-      flags   = Map.fromList [(mkCId f,x) | Opt (f,[x]) <- M.flags mo]
-      opers   = Map.fromAscList [] -- opers will be created as optimization
-      utf     = if elem (Opt ("coding",["utf8"])) (M.flags mo) 
-                  then D.convertStringsInTerm decodeUTF8 else id
-      lins    = Map.fromAscList 
-        [(i2i f, utf (mkTerm tr))  | (f,CncFun _ (Yes tr) _) <- js]
-      lincats = Map.fromAscList 
-        [(i2i c, mkCType ty) | (c,CncCat (Yes ty) _ _) <- js]
-      lindefs = Map.fromAscList 
-        [(i2i c, mkTerm tr)  | (c,CncCat _ (Yes tr) _) <- js]
-      printnames = Map.union 
-        (Map.fromAscList [(i2i f, mkTerm tr) | (f,CncFun _ _ (Yes tr)) <- js])
-        (Map.fromAscList [(i2i f, mkTerm tr) | (f,CncCat _ _ (Yes tr)) <- js])
-      params = Map.fromAscList 
-        [(i2i c, pars lang0 c) | (c,CncCat (Yes ty) _ _) <- js]
-      fcfg = Nothing
-
-i2i :: Ident -> CId
-i2i = CId . ident2bs
-
-mkType :: A.Type -> C.Type
-mkType t = case GM.typeForm t of
-  Ok (hyps,(_,cat),args) -> C.DTyp (mkContext hyps) (i2i cat) (map mkExp args)
-
-mkExp :: A.Term -> C.Exp
-mkExp t = case t of
-  A.Eqs eqs -> C.EEq [C.Equ (map mkPatt ps) (mkExp e) | (ps,e) <- eqs]
-  _ -> case GM.termForm t of
-    Ok (xx,c,args) -> C.DTr [i2i x | x <- xx] (mkAt c) (map mkExp args) 
- where
-  mkAt c = case c of 
-    Q _ c  -> C.AC $ i2i c
-    QC _ c -> C.AC $ i2i c
-    Vr x   -> C.AV $ i2i x
-    EInt i -> C.AI i
-    EFloat f -> C.AF f
-    K s    -> C.AS s
-    Meta (MetaSymb i) -> C.AM $ toInteger i
-    _ -> C.AM 0
-  mkPatt p = uncurry CM.tree $ case p of
-    A.PP _ c ps -> (C.AC (i2i c), map mkPatt ps)
-    A.PV x      -> (C.AV (i2i x), [])
-    A.PW        -> (C.AV wildCId, [])
-    A.PInt i    -> (C.AI i, [])
-
-mkContext :: A.Context -> [C.Hypo]
-mkContext hyps = [C.Hyp (i2i x) (mkType ty) | (x,ty) <- hyps]
-
-mkTerm :: Term -> C.Term
-mkTerm tr = case tr of
-  Vr (IA _ i) -> C.V i
-  Vr (IAV _ _ i) -> C.V i
-  Vr (IC s) | isDigit (BS.last s) -> 
-    C.V ((read . BS.unpack . snd . BS.spanEnd isDigit) s)
-    ---- from gf parser of gfc
-  EInt i      -> C.C $ fromInteger i
-  R rs     -> C.R [mkTerm t | (_, (_,t)) <- rs]
-  P t l    -> C.P (mkTerm t) (C.C (mkLab l))
-  TSh _ _    -> error $ show tr
-  T _ cs   -> C.R [mkTerm t | (_,t) <- cs] ------
-  V _ cs   -> C.R [mkTerm t | t <- cs]
-  S t p    -> C.P (mkTerm t) (mkTerm p)
-  C s t    -> C.S $ concatMap flats [mkTerm x | x <- [s,t]]
-  FV ts    -> C.FV [mkTerm t | t <- ts]
-  K s      -> C.K (C.KS s)
------  K (KP ss _) -> C.K (C.KP ss []) ---- TODO: prefix variants
-  Empty    -> C.S []
-  App _ _  -> prtTrace tr $ C.C 66661          ---- for debugging
-  Abs _ t  -> mkTerm t ---- only on toplevel
-  Alts (td,tvs) -> 
-    C.K (C.KP (strings td) [C.Var (strings u) (strings v) | (u,v) <- tvs])
-  _ -> prtTrace tr $ C.S [C.K (C.KS (A.prt tr +++ "66662"))] ---- for debugging
- where
-   mkLab (LIdent l) = case BS.unpack l of
-     '_':ds -> (read ds) :: Int
-     _ -> prtTrace tr $ 66663
-   strings t = case t of
-     K s -> [s]
-     C u v -> strings u ++ strings v
-     Strs ss -> concatMap strings ss
-     _ -> prtTrace tr $ ["66660"]
-   flats t = case t of
-     C.S ts -> concatMap flats ts
-     _ -> [t]
-
--- encoding GFCC-internal lincats as terms
-mkCType :: Type -> C.Term
-mkCType t = case t of
-  EInt i      -> C.C $ fromInteger i
-  RecType rs  -> C.R [mkCType t | (_, t) <- rs]
-  Table pt vt -> case pt of
-    EInt i -> C.R $ replicate (1 + fromInteger i) $ mkCType vt
-    RecType rs -> mkCType $ foldr Table vt (map snd rs) 
-  Sort s | s == cStr -> C.S [] --- Str only
-  _ | Just i <- GM.isTypeInts t -> C.C $ fromInteger i
-  _ -> error  $ "mkCType " ++ show t
-
--- encoding showable lincats (as in source gf) as terms
-mkParamLincat :: SourceGrammar -> Ident -> Ident -> C.Term
-mkParamLincat sgr lang cat = errVal (C.R [C.S []]) $ do 
-  typ <- Look.lookupLincat sgr lang cat
-  mkPType typ
- where
-  mkPType typ = case typ of
-    RecType lts -> do
-      ts <- mapM (mkPType . snd) lts
-      return $ C.R [ C.P (kks $ prt_ l) t | ((l,_),t) <- zip lts ts]
-    Table (RecType lts) v -> do
-      ps <- mapM (mkPType . snd) lts
-      v' <- mkPType v
-      return $ foldr (\p v -> C.S [p,v]) v' ps
-    Table p v -> do
-      p' <- mkPType p
-      v' <- mkPType v
-      return $ C.S [p',v']
-    Sort s | s == cStr -> return $ C.S []
-    _ -> return $ 
-      C.FV $ map (kks . filter showable . prt_) $ 
-             errVal [] $ Look.allParamValues sgr typ
-  showable c = not (isSpace c) ---- || (c == ' ')  -- to eliminate \n in records
-  kks = C.K . C.KS
-
--- return just one module per language
-
-reorder :: Ident -> SourceGrammar -> SourceGrammar
-reorder abs cg = M.MGrammar $ 
-    (abs, M.ModMod $ 
-          M.Module M.MTAbstract M.MSComplete aflags [] [] adefs):
-      [(c, M.ModMod $ 
-          M.Module (M.MTConcrete abs) M.MSComplete fs [] [] (sorted2tree js)) 
-            | (c,(fs,js)) <- cncs] 
-     where
-       mos = M.allModMod cg
-       adefs = sorted2tree $ sortIds $
-                 predefADefs ++ Look.allOrigInfos cg abs
-       predefADefs = 
-         [(c, AbsCat (Yes []) Nope) | c <- [cFloat,cInt,cString]]
-       aflags = nubFlags $ 
-         concat [M.flags mo | (_,mo) <- M.allModMod cg, M.isModAbs mo]
-
-       cncs = sortIds [(lang, concr lang) | lang <- M.allConcretes cg abs]
-       concr la = (nubFlags flags, 
-                   sortIds (predefCDefs ++ jments)) where 
-         jments = Look.allOrigInfos cg la
-         flags  = concat [M.flags mo | 
-                     (i,mo) <- mos, M.isModCnc mo, 
-                     Just r <- [lookup i (M.allExtendSpecs cg la)]]
-
-         predefCDefs = 
-           [(c, CncCat (Yes GM.defLinType) Nope Nope) | c <- [cInt,cFloat,cString]]
-
-       sortIds = sortBy (\ (f,_) (g,_) -> compare f g) 
-       nubFlags = nubBy (\ (Opt (f,_)) (Opt (g,_)) -> f == g)
-
-
--- one grammar per language - needed for symtab generation
-repartition :: Ident -> SourceGrammar -> [SourceGrammar]
-repartition abs cg = [M.partOfGrammar cg (lang,mo) | 
-  let mos = M.allModMod cg,
-  lang <- M.allConcretes cg abs,
-  let mo = errVal 
-       (error ("no module found for " ++ A.prt lang)) $ M.lookupModule cg lang
-  ]
- 
-
--- translate tables and records to arrays, parameters and labels to indices
-
-canon2canon :: Ident -> SourceGrammar -> SourceGrammar
-canon2canon abs = 
-   recollect . map cl2cl . repartition abs . purgeGrammar abs 
- where
-  recollect = M.MGrammar . nubBy (\ (i,_) (j,_) -> i==j) . concatMap M.modules
-  cl2cl = M.MGrammar . js2js . map (c2c p2p) . M.modules
-    
-  js2js ms = map (c2c (j2j (M.MGrammar ms))) ms
-
-  c2c f2 (c,m) = case m of
-      M.ModMod mo@(M.Module _ _ _ _ _ js) ->
-        (c, M.ModMod $ M.replaceJudgements mo $ mapTree f2 js)
-      _ -> (c,m)    
-  j2j cg (f,j) = case j of
-      CncFun x (Yes tr) z -> (f,CncFun x (Yes (t2t tr)) z)
-      CncCat (Yes ty) (Yes x) y -> (f,CncCat (Yes (ty2ty ty)) (Yes (t2t x)) y)
-      _ -> (f,j)
-   where
-      t2t = term2term cg pv
-      ty2ty = type2type cg pv
-      pv@(labels,untyps,typs) = trs $ paramValues cg
-
-    -- flatten record arguments of param constructors
-  p2p (f,j) = case j of
-      ResParam (Yes (ps,v)) -> 
-        (f,ResParam (Yes ([(c,concatMap unRec cont) | (c,cont) <- ps],Nothing)))
-      _ -> (f,j)
-  unRec (x,ty) = case ty of
-      RecType fs -> [ity | (_,typ) <- fs, ity <- unRec (identW,typ)] 
-      _ -> [(x,ty)]
-
-----
-  trs v = traceD (tr v) v
-
-  tr (labels,untyps,typs) =
-     ("LABELS:" ++++
-       unlines [A.prt c ++ "." ++ unwords (map A.prt l) +++ "=" +++ show i  | 
-       ((c,l),i) <- Map.toList labels]) ++++
-     ("UNTYPS:" ++++ unlines [A.prt t +++ "=" +++ show i | 
-       (t,i) <- Map.toList untyps]) ++++
-     ("TYPS:" ++++ unlines [A.prt t +++ "=" +++ show (Map.assocs i) | 
-       (t,i) <- Map.toList typs])
-----
-
-purgeGrammar :: Ident -> SourceGrammar -> SourceGrammar
-purgeGrammar abstr gr = 
-  (M.MGrammar . list . map unopt . filter complete . purge . M.modules) gr 
- where
-  list ms = traceD ("MODULES" +++ unwords (map (prt . fst) ms)) ms
-  purge = nubBy (\x y -> fst x == fst y) . filter (flip elem needed . fst)
-  needed = nub $ concatMap (requiredCanModules isSingle gr) acncs
-  acncs = abstr : M.allConcretes gr abstr
-  isSingle = True
-  complete (i,M.ModMod m) = M.isCompleteModule m --- not . isIncompleteCanon
-  unopt = unshareModule gr -- subexp elim undone when compiled
-
-type ParamEnv =
-  (Map.Map (Ident,[Label]) (Type,Integer), -- numbered labels
-   Map.Map Term Integer,                   -- untyped terms to values
-   Map.Map Type (Map.Map Term Integer))    -- types to their terms to values
-
---- gathers those param types that are actually used in lincats and lin terms
-paramValues :: SourceGrammar -> ParamEnv
-paramValues cgr = (labels,untyps,typs) where
-  partyps = nub $ 
-            --- [App (Q (IC "Predef") (IC "Ints")) (EInt i) | i <- [1,9]] ---linTypeInt 
-{-
-            [ty | 
-              (_,(_,CncCat (Yes (RecType ls)) _ _)) <- jments,
-              ty0 <- [ty | (_, ty) <- unlockTyp ls],
-              ty  <- typsFrom ty0
--}
-            [ty | 
-              (_,(_,CncCat (Yes ty0) _ _)) <- jments,
-              ty  <- typsFrom ty0
-            ] ++ [
-             Q m ty | 
-              (m,(ty,ResParam _)) <- jments
-            ] ++ [ty | 
-              (_,(_,CncFun _ (Yes tr) _)) <- jments,
-              ty  <- err (const []) snd $ appSTM (typsFromTrm tr) []
-            ]
-  params = [(ty, errVal (traceD ("UNKNOWN PARAM TYPE" +++ show ty) []) $ 
-                                         Look.allParamValues cgr ty) | ty <- partyps]
-  typsFrom ty = unlockTy ty : case ty of
-    Table p t  -> typsFrom p ++ typsFrom t
-    RecType ls -> concat [typsFrom t | (_, t) <- ls]
-    _ -> []
- 
-  typsFromTrm :: Term -> STM [Type] Term
-  typsFromTrm tr = case tr of
-    R fs -> mapM_ (typsFromField . snd) fs >> return tr 
-      where
-        typsFromField (mty, t) = case mty of
-          Just x -> updateSTM (x:) >> typsFromTrm t
-          _ -> typsFromTrm t
-    V ty ts -> updateSTM (ty:) >> mapM_ typsFromTrm ts >> return tr
-    T (TTyped ty) cs -> 
-      updateSTM (ty:) >> mapM_ typsFromTrm [t | (_, t) <- cs] >> return tr
-    T (TComp ty) cs -> 
-      updateSTM (ty:) >> mapM_ typsFromTrm [t | (_, t) <- cs] >> return tr
-    _ -> GM.composOp typsFromTrm tr
-
-  jments = 
-    [(m,j) | (m,mo) <- M.allModMod cgr, j <- tree2list $ M.jments mo]
-  typs = 
-    Map.fromList [(ci,Map.fromList (zip vs [0..])) | (ci,vs) <- params]
-  untyps = 
-    Map.fromList $ concatMap Map.toList [typ | (_,typ) <- Map.toList typs]
-  lincats = 
-    [(cat,[f | let RecType fs = GM.defLinType, f <- fs]) | cat <- [cInt,cFloat, cString]] ++
-    reverse ---- TODO: really those lincats that are reached
-            ---- reverse is enough to expel overshadowed ones... 
-      [(cat,ls) | (_,(cat,CncCat (Yes ty) _ _)) <- jments, 
-                  RecType ls <- [unlockTy ty]]
-  labels = Map.fromList $ concat 
-    [((cat,[lab]),(typ,i)): 
-      [((cat,[LVar v]),(typ,toInteger (mx + v))) | v <- [0,1]] ++ ---- 1 or 2 vars 
-      [((cat,[lab,lab2]),(ty,j)) | 
-        rs <- getRec typ, ((lab2, ty),j) <- zip rs [0..]] 
-      | 
-        (cat,ls) <- lincats, ((lab, typ),i) <- zip ls [0..], let mx = length ls]
-    -- go to tables recursively
-    ---- TODO: even go to deeper records
-   where
-     getRec typ = case typ of
-       RecType rs -> [rs] ---- [unlockTyp rs]  -- (sort (unlockTyp ls))
-       Table _ t  -> getRec t
-       _ -> []
-
-type2type :: SourceGrammar -> ParamEnv -> Type -> Type
-type2type cgr env@(labels,untyps,typs) ty = case ty of
-  RecType rs ->
-    RecType [(mkLab i, t2t t) | (i,(l, t)) <- zip [0..] (unlockTyp rs)]
-  Table pt vt -> Table (t2t pt) (t2t vt)
-  QC _ _ -> look ty
-  _ -> ty
- where
-   t2t = type2type cgr env
-   look ty = EInt $ (+ (-1)) $ toInteger $ case Map.lookup ty typs of
-     Just vs -> length $ Map.assocs vs
-     _ -> trace ("unknown partype " ++ show ty) 66669
-
-term2term :: SourceGrammar -> ParamEnv -> Term -> Term
-term2term cgr env@(labels,untyps,typs) tr = case tr of
-  App _ _ -> mkValCase (unrec tr)
-  QC  _ _ -> mkValCase tr 
-  R rs    -> R [(mkLab i, (Nothing, t2t t)) | 
-                 (i,(l,(_,t))) <- zip [0..] (sort (unlock rs))]
-  P  t l   -> r2r tr
-  PI t l i -> EInt $ toInteger i
-
-  T (TWild _) _ -> error $ "wild" +++ prt tr
-  T (TComp  ty) cs  -> t2t $ V ty $ map snd cs ---- should be elim'ed in tc
-  T (TTyped ty) cs  -> t2t $ V ty $ map snd cs ---- should be elim'ed in tc
-  V ty ts  -> mkCurry $ V ty [t2t t | t <- ts]
-  S t p    -> mkCurrySel (t2t t) (t2t p)
-
-  _ -> GM.composSafeOp t2t tr
- where
-   t2t = term2term cgr env
-
-   unrec t = case t of
-     App f (R fs) -> GM.mkApp (unrec f) [unrec u | (_,(_,u)) <- fs]
-     _ -> GM.composSafeOp unrec t
-
-   mkValCase tr = case appSTM (doVar tr) [] of
-     Ok (tr', st@(_:_)) -> t2t $ comp $ foldr mkCase tr' st
-     _ -> valNum $ comp tr
-
-   --- this is mainly needed for parameter record projections
-   ---- was: errVal t $ Compute.computeConcreteRec cgr t
-   comp t = case t of
-     T (TComp typ) ts  -> comp $ V typ (map (comp . snd) ts)  ---- should...
-     T (TTyped typ) ts -> comp $ V typ (map (comp . snd) ts)  ---- should
-     V typ ts -> V typ (map comp ts)
-     S tb (FV ts) -> FV $ map (comp . S tb) ts
-     S (V typ ts) v0 -> err error id $ do
-       let v = comp v0 
-       return $ maybe t (comp . (ts !!) . fromInteger) $ Map.lookup v untyps
-     R r -> R [(l,(ty,comp t)) | (l,(ty,t)) <- r]
-     P (R r) l -> maybe t (comp . snd) $ lookup l r
-     _ -> GM.composSafeOp comp t
-
-   doVar :: Term -> STM [((Type,[Term]),(Term,Term))] Term
-   doVar tr = case getLab tr of
-     Ok (cat, lab) -> do
-       k <- readSTM >>= return . length
-       let tr' = Vr $ identC $ (BS.pack (show k)) -----
-
-       let tyvs = case Map.lookup (cat,lab) labels of
-             Just (ty,_) -> case Map.lookup ty typs of
-               Just vs -> (ty,[t | 
-                            (t,_) <- sortBy (\x y -> compare (snd x) (snd y)) 
-                                            (Map.assocs vs)])
-               _ -> error $ "doVar1" +++ A.prt ty
-             _ -> error $ "doVar2" +++ A.prt tr +++ show (cat,lab) ---- debug
-       updateSTM ((tyvs, (tr', tr)):) 
-       return tr'
-     _ -> GM.composOp doVar tr
-
-   r2r tr@(P (S (V ty ts) v) l) = t2t $ S (V ty [comp (P t l) | t <- ts]) v
-
-   r2r tr@(P p _) = case getLab tr of
-     Ok (cat,labs) -> P (t2t p) . mkLab $ 
-          maybe (prtTrace tr $ 66664) snd $ 
-            Map.lookup (cat,labs) labels
-     _ -> K ((A.prt tr +++ prtTrace tr "66665"))
-
-   -- this goes recursively into tables (ignored) and records (accumulated)
-   getLab tr = case tr of
-     Vr (IA cat _) -> return (identC cat,[])
-     Vr (IAV cat _ _) -> return (identC cat,[])
-     Vr (IC s) -> return (identC cat,[]) where
-       cat = BS.takeWhile (/='_') s ---- also to match IAVs; no _ in a cat tolerated
-             ---- init (reverse (dropWhile (/='_') (reverse s))) ---- from gf parser
-----     Vr _ -> error $ "getLab " ++ show tr
-     P p lab2 -> do
-       (cat,labs) <- getLab p
-       return (cat,labs++[lab2]) 
-     S p _ -> getLab p
-     _ -> Bad "getLab"
-
-
-   mkCase ((ty,vs),(x,p)) tr = 
-     S (V ty [mkBranch x v tr | v <- vs]) p
-   mkBranch x t tr = case tr of
-     _ | tr == x -> t
-     _ -> GM.composSafeOp (mkBranch x t) tr     
-
-   valNum tr = maybe (valNumFV $ tryFV tr) EInt $ Map.lookup tr untyps
-    where
-      tryFV tr = case GM.appForm tr of
-        (c@(QC _ _), ts) -> [GM.mkApp c ts' | ts' <- combinations (map tryFV ts)]
-        (FV ts,_) -> ts
-        _ -> [tr]
-      valNumFV ts = case ts of
-        [tr] -> prtTrace tr $ K "66667"
-        _ -> FV $ map valNum ts
-
-   mkCurry trm = case trm of
-     V (RecType [(_,ty)]) ts -> V ty ts 
-     V (RecType ((_,ty):ltys)) ts -> 
-       V ty [mkCurry (V (RecType ltys) cs) | 
-         cs <- chop (product (map (lengthtyp . snd) ltys)) ts] 
-     _ -> trm
-   lengthtyp ty = case Map.lookup ty typs of
-     Just m -> length (Map.assocs m)
-     _ -> error $ "length of type " ++ show ty
-   chop i xs = case splitAt i xs of 
-     (xs1,[])  -> [xs1]
-     (xs1,xs2) -> xs1:chop i xs2
-
-
-   mkCurrySel t p = S t p -- done properly in CheckGFCC
-
-
-mkLab k = LIdent (BS.pack ("_" ++ show k))
-
--- remove lock fields; in fact, any empty records and record types
-unlock = filter notlock where
-  notlock (l,(_, t)) = case t of --- need not look at l
-     R [] -> False
-     RecType [] -> False
-     _ -> True
-
-unlockTyp = filter notlock
-  
-notlock (l, t) = case t of --- need not look at l
-     RecType [] -> False
-     _ -> True
-
-unlockTy ty = case ty of
-  RecType ls -> RecType $ sort [(l, unlockTy t) | (l,t) <- ls, notlock (l,t)]
-  _ -> GM.composSafeOp unlockTy ty
-
-
-prtTrace tr n = 
-  trace ("-- INTERNAL COMPILER ERROR" +++ A.prt tr ++++ show n) n
-prTrace  tr n = trace ("-- OBSERVE" +++ A.prt tr +++ show n +++ show tr) n
-
-