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authoraarne <aarne@cs.chalmers.se>2008-06-25 16:43:48 +0000
committeraarne <aarne@cs.chalmers.se>2008-06-25 16:43:48 +0000
commitb96b36f43de3e2f8b58d5f539daa6f6d47f25870 (patch)
tree0992334be13cec6538a1dea22fbbf26ad6bdf224 /src/GF/Devel/Compile/GFtoGFCC.hs
parentfe367412e0aeb4ad5c02de68e6eca382e0f96984 (diff)
removed src for 2.9
Diffstat (limited to 'src/GF/Devel/Compile/GFtoGFCC.hs')
-rw-r--r--src/GF/Devel/Compile/GFtoGFCC.hs542
1 files changed, 0 insertions, 542 deletions
diff --git a/src/GF/Devel/Compile/GFtoGFCC.hs b/src/GF/Devel/Compile/GFtoGFCC.hs
deleted file mode 100644
index 81f33e11a..000000000
--- a/src/GF/Devel/Compile/GFtoGFCC.hs
+++ /dev/null
@@ -1,542 +0,0 @@
-module GF.Devel.Compile.GFtoGFCC (prGrammar2gfcc,mkCanon2gfcc) where
-
-import GF.Devel.Compile.Factorize (unshareModule)
-
-import GF.Devel.Grammar.Grammar
-import GF.Devel.Grammar.Construct
-import qualified GF.Devel.Grammar.Lookup as Look
-
-import qualified GF.Devel.Grammar.Grammar as A ----
-import qualified GF.Devel.Grammar.Grammar as M ----
-import qualified GF.Devel.Grammar.Macros as GM
---import qualified GF.Grammar.Compute as Compute
-
-import GF.Devel.Grammar.PrGF
---import GF.Devel.ModDeps
-import GF.Infra.Ident
-
-import GF.Devel.PrintGFCC
-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.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 Debug.Trace ----
-
--- the main function: generate GFCC from GF.
-
-prGrammar2gfcc :: Options -> String -> GF -> (String,String)
-prGrammar2gfcc opts cnc gr = (abs, printGFCC gc) where
- (abs,gc) = mkCanon2gfcc opts cnc gr
-
-mkCanon2gfcc :: Options -> String -> GF -> (String,D.GFCC)
-mkCanon2gfcc opts cnc gr =
- (prIdent abs, (canon2gfcc opts pars . reorder abs . canon2canon abs) gr)
- where
- abs = err error id $ Look.abstractOfConcrete gr (identC cnc)
- pars = mkParamLincat gr
-
--- Generate GFCC from GFCM.
--- this assumes a grammar translated by canon2canon
-
-canon2gfcc :: Options -> (Ident -> Ident -> C.Term) -> GF -> D.GFCC
-canon2gfcc opts pars cgr =
- (if (oElem (iOpt "show_canon") opts) then trace (prt cgr) else id) $
- D.GFCC an cns gflags abs cncs
- where
- -- recognize abstract and concretes
- ([(a,abm)],cms) =
- partition ((== MTAbstract) . mtype . snd) (Map.toList (gfmodules cgr))
-
- -- abstract
- an = (i2i a)
- cns = map (i2i . fst) cms
- abs = D.Abstr aflags funs cats catfuns
- gflags = Map.fromList [(CId fg,x) | Just x <- [getOptVal opts (aOpt fg)]]
- where fg = "firstlang"
- aflags = Map.fromList [(CId f,x) | (IC f,x) <- Map.toList (M.mflags abm)]
- mkDef pty = case pty of
- Meta _ -> CM.primNotion
- t -> mkExp t
-
- funs = Map.fromAscList lfuns
- cats = Map.fromAscList lcats
-
- lfuns = [(i2i f, (mkType (jtype ju), mkDef (jdef ju))) |
- (f,ju) <- listJudgements abm, jform ju == JFun]
- lcats = [(i2i c, mkContext (GM.contextOfType (jtype ju))) |
- (c,ju) <- listJudgements abm, jform ju == JCat]
- catfuns = Map.fromList
- [(cat,[f | (f, (C.DTyp _ c _,_)) <- lfuns, c==cat]) | (cat,_) <- lcats]
-
- -- concretes
- cncs = Map.fromList [mkConcr lang (i2i lang) mo | (lang,mo) <- cms]
- mkConcr lang0 lang mo =
- (lang,D.Concr flags lins opers lincats lindefs printnames params fcfg)
- where
- js = listJudgements mo
- flags = Map.fromList [(CId f,x) | (IC f,x) <- Map.toList (M.mflags mo)]
- opers = Map.fromAscList [] -- opers will be created as optimization
- utf = if elem (IC "coding","utf8") (Map.assocs (M.mflags mo)) ----
- then D.convertStringsInTerm decodeUTF8 else id
- lins = Map.fromAscList
- [(i2i f, utf (mkTerm (jdef ju))) | (f,ju) <- js, jform ju == JLin]
- lincats = Map.fromAscList
- [(i2i c, utf (mkTerm (jtype ju))) | (c,ju) <- js, jform ju == JLincat]
- lindefs = Map.fromAscList
- [(i2i c, utf (mkTerm (jdef ju))) | (c,ju) <- js, jform ju == JLincat]
- printnames = Map.fromAscList
- [(i2i c, utf (mkTerm (jprintname ju))) |
- (c,ju) <- js, elem (jform ju) [JLincat,JLin]]
- params = Map.fromAscList
- [(i2i c, pars lang0 c) | (c,ju) <- js, jform ju == JLincat] ---- c ??
- fcfg = Nothing
-
-i2i :: Ident -> CId
-i2i = CId . prIdent
-
-mkType :: A.Type -> C.Type
-mkType t = case GM.typeForm t of
- (hyps,(Q _ 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
- (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 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 CM.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 (IC s) | isDigit (last s) ->
- C.V (read (reverse (takeWhile (/='_') (reverse 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))
- 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 (prt tr +++ "66662"))] ---- for debugging
- where
- mkLab (LIdent l) = case l of
- '_':ds -> (read ds) :: Int
- _ -> prtTrace tr $ 66663
- strings t = case t of
- K s -> [s]
- C u v -> strings u ++ strings v
- FV 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 "Str" -> C.S [] --- Str only
- App (Q (IC "Predef") (IC "Ints")) (EInt i) -> C.C $ fromInteger i
- _ -> error $ "mkCType " ++ show t
-
--- encoding showable lincats (as in source gf) as terms
-mkParamLincat :: GF -> 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 "Str" -> 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 -> GF -> GF
-reorder abs cg = emptyGF {
- gfabsname = Just abs,
- gfcncnames = (map fst cncs),
- gfmodules = Map.fromList ((abs,absm) : map mkCnc cncs)
- }
- where
- absm = emptyModule {
- mtype = MTAbstract,
- mflags = aflags,
- mjments = adefs
- }
- mkCnc (c,cnc) = (c,emptyModule {
- mtype = MTConcrete abs,
- mflags = fst cnc,
- mjments = snd cnc
- })
-
- mos = Map.toList $ gfmodules cg
-
- adefs = Map.fromAscList $ sortIds $
- predefADefs ++ Look.allOrigJudgements cg abs
- predefADefs =
- [(IC c, absCat []) | c <- ["Float","Int","String"]]
- aflags = Map.fromList $ nubByFst $ concat
- [Map.toList (M.mflags mo) | (_,mo) <- mos, mtype mo == MTAbstract] ----toom
-
- cncs = sortIds [(lang, concr lang) | lang <- Look.allConcretes cg abs]
- concr la = (
- Map.fromList (nubByFst flags),
- Map.fromList (sortIds (predefCDefs ++ jments))
- ) where
- jments = Look.allOrigJudgements cg la
- flags = Look.lookupFlags cg la
- ----concat [M.mflags mo |
- ---- (i,mo) <- mos, M.isModCnc mo,
- ---- Just r <- [lookup i (M.allExtendSpecs cg la)]]
-
- predefCDefs = [(IC c, cncCat GM.defLinType) |
- ---- lindef,printname
- c <- ["Float","Int","String"]]
-
- sortIds = sortBy (\ (f,_) (g,_) -> compare f g)
-
-nubByFst = nubBy (\ (f,_) (g,_) -> f == g)
-
-
--- one grammar per language - needed for symtab generation
-repartition :: Ident -> GF -> [GF]
-repartition abs cg = [Look.partOfGrammar cg (lang,mo) |
- let mos = gfmodules cg,
- lang <- Look.allConcretes cg abs,
- let mo = errVal
- (error ("no module found for " ++ prt lang)) $ Look.lookupModule cg lang
- ]
-
-
--- translate tables and records to arrays, parameters and labels to indices
-
-canon2canon :: Ident -> GF -> GF
-canon2canon abs gf = errVal gf $ GM.termOpGF t2t gf where
- t2t = return . term2term gf pv
- ty2ty = type2type gf pv
- pv@(labels,untyps,typs) = paramValues gf
- ---- should be done lang for lang
- ---- ty2ty should be used for types, t2t only in concrete
-
-{- ----
- gfModules . nubModules . map cl2cl . repartition abs . purgeGrammar abs
- where
- nubModules = Map.fromList . nubByFst . concatMap (Map.toList . gfmodules)
-
- cl2cl gf = errVal gf $ GM.moduleOpGF (js2js . map (GM.judgementOpModule p2p)) gf
-
- js2js ms = map (GM.judgementOpModule (j2j (gfModules ms))) ms
-
- j2j cg (f,j) = case jform j of
- JLin -> (f, j{jdef = t2t (jdef j)})
- JLincat -> (f, j{jdef = t2t (jdef j), jtype = ty2ty (jtype j)})
- _ -> (f,j)
- where
- t2t = term2term cg pv
- ty2ty = type2type cg pv
- pv@(labels,untyps,typs) = paramValues cg ---trs $ paramValues cg
-
- -- flatten record arguments of param constructors
- p2p (f,j) = case jform j of
- ---- JParam ->
- ----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 = trace (tr v) v
-
- tr (labels,untyps,typs) =
- ("labels:" ++++
- unlines [prt c ++ "." ++ unwords (map prt l) +++ "=" +++ show i |
- ((c,l),i) <- Map.toList labels]) ++
- ("untyps:" ++++ unlines [prt t +++ "=" +++ show i |
- (t,i) <- Map.toList untyps]) ++
- ("typs:" ++++ unlines [prt t |
- (t,_) <- Map.toList typs])
-----
--}
-
-purgeGrammar :: Ident -> GF -> GF
-purgeGrammar abstr gr = gr {
- gfmodules = treat gr
- }
- where
- treat =
- Map.fromList . map unopt . filter complete . purge . Map.toList . gfmodules
- purge = nubBy (\x y -> fst x == fst y) . filter (flip elem needed . fst)
- needed =
- nub $ concatMap (Look.allDepsModule gr) $
- ---- (requiredCanModules True gr) $
- [mo | m <- abstr : Look.allConcretes gr abstr,
- Ok mo <- [Look.lookupModule gr m]]
-
- complete (i,mo) = isCompleteModule mo
- 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 :: GF -> ParamEnv
-paramValues cgr = (labels,untyps,typs) where
-
- jments = [(m,j) |
- (m,mo) <- Map.toList (gfmodules cgr),
- j <- Map.toList (mjments mo)]
-
- partyps = nub $ [ty |
- (_,(_,ju)) <- jments,
- jform ju == JLincat,
- RecType ls <- [jtype ju],
- ty0 <- [ty | (_, ty) <- unlockTyp ls],
- ty <- typsFrom ty0
- ] ++ [Q m ty |
- (m,(ty,ju)) <- jments,
- jform ju == JParam
- ] ++ [ty |
- (_,(_,ju)) <- jments,
- jform ju == JLin,
- ty <- err (const []) snd $ appSTM (typsFromTrm (jdef ju)) []
- ]
- params = [(ty, errVal [] $ Look.allParamValues cgr ty) | ty <- partyps]
- typsFrom ty = case ty of
- Table p t -> typsFrom p ++ typsFrom t
- RecType ls -> RecType (sort (unlockTyp ls)) : concat [typsFrom t | (_, t) <- ls]
- _ -> [ty]
-
- 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
-
- typs =
- Map.fromList [(ci,Map.fromList (zip vs [0..])) | (ci,vs) <- params]
- untyps =
- Map.fromList $ concatMap Map.toList [typ | (_,typ) <- Map.toList typs]
- lincats =
- [(IC cat,[(LIdent "s",typeStr)]) | cat <- ["Int", "Float", "String"]] ++
- reverse ---- TODO: really those lincats that are reached
- ---- reverse is enough to expel overshadowed ones...
- [(cat,(unlockTyp ls)) |
- (_,(cat,ju)) <- jments,
- jform ju == JLincat,
- RecType ls <- [jtype ju]
- ]
- labels = Map.fromList $ concat
- [((cat,[lab]),(typ,i)):
- [((cat,[lab,lab2]),(ty,j)) |
- rs <- getRec typ, ((lab2, ty),j) <- zip rs [0..]]
- |
- (cat,ls) <- lincats, ((lab, typ),i) <- zip ls [0..]]
- -- go to tables recursively
- ---- TODO: even go to deeper records
- where
- getRec typ = case typ of
- RecType rs -> [rs]
- Table _ t -> getRec t
- _ -> []
-
-type2type :: GF -> 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 :: GF -> 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 (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 (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 $ 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 $ prt ty
- _ -> error $ prt tr
- 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 ((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 (IC s) -> return (identC cat,[]) where
- cat = 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] -> trace (unwords (map prt (Map.keys typs))) $
- 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 (("_" ++ 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
- _ -> True
-unlockTyp = filter notlock where
- notlock (l, t) = case t of --- need not look at l
- RecType [] -> False
- _ -> True
-
-prtTrace tr n =
- trace ("-- INTERNAL COMPILER ERROR" +++ prt tr ++++ show n) n
-prTrace tr n = trace ("-- OBSERVE" +++ prt tr +++ show n +++ show tr) n
-