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Diffstat (limited to 'src/compiler/GF/Compile/Compute/AppPredefined.hs')
| -rw-r--r-- | src/compiler/GF/Compile/Compute/AppPredefined.hs | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/src/compiler/GF/Compile/Compute/AppPredefined.hs b/src/compiler/GF/Compile/Compute/AppPredefined.hs deleted file mode 100644 index 0869cedee..000000000 --- a/src/compiler/GF/Compile/Compute/AppPredefined.hs +++ /dev/null @@ -1,143 +0,0 @@ ----------------------------------------------------------------------- --- | --- Module : AppPredefined --- Maintainer : AR --- Stability : (stable) --- Portability : (portable) --- --- > CVS $Date: 2005/10/06 14:21:34 $ --- > CVS $Author: aarne $ --- > CVS $Revision: 1.13 $ --- --- Predefined function type signatures and definitions. ------------------------------------------------------------------------------ - -module GF.Compile.Compute.AppPredefined ({- - isInPredefined, typPredefined, arrityPredefined, predefModInfo, appPredefined-} - ) where -{- -import GF.Compile.TypeCheck.Primitives -import GF.Infra.Option -import GF.Data.Operations -import GF.Grammar -import GF.Grammar.Predef - -import qualified Data.Map as Map -import GF.Text.Pretty -import Data.Char (isUpper,toUpper,toLower) - --- predefined function type signatures and definitions. AR 12/3/2003. - -isInPredefined :: Ident -> Bool -isInPredefined f = Map.member f primitives - -arrityPredefined :: Ident -> Maybe Int -arrityPredefined f = do ty <- typPredefined f - let (ctxt,_) = typeFormCnc ty - return (length ctxt) - -predefModInfo :: SourceModInfo -predefModInfo = ModInfo MTResource MSComplete noOptions [] Nothing [] [] "Predef.gf" Nothing primitives - -appPredefined :: Term -> Err (Term,Bool) -appPredefined t = case t of - App f x0 -> do - (x,_) <- appPredefined x0 - case f of - -- one-place functions - Q (mod,f) | mod == cPredef -> - case x of - (K s) | f == cLength -> retb $ EInt $ length s - (K s) | f == cIsUpper -> retb $ if (all isUpper s) then predefTrue else predefFalse - (K s) | f == cToUpper -> retb $ K $ map toUpper s - (K s) | f == cToLower -> retb $ K $ map toLower s - (K s) | f == cError -> retb $ Error s - - _ -> retb t - - -- two-place functions - App (Q (mod,f)) z0 | mod == cPredef -> do - (z,_) <- appPredefined z0 - case (norm z, norm x) of - (EInt i, K s) | f == cDrop -> retb $ K (drop i s) - (EInt i, K s) | f == cTake -> retb $ K (take i s) - (EInt i, K s) | f == cTk -> retb $ K (take (max 0 (length s - i)) s) - (EInt i, K s) | f == cDp -> retb $ K (drop (max 0 (length s - i)) s) - (K s, K t) | f == cEqStr -> retb $ if s == t then predefTrue else predefFalse - (K s, K t) | f == cOccur -> retb $ if substring s t then predefTrue else predefFalse - (K s, K t) | f == cOccurs -> retb $ if any (flip elem t) s then predefTrue else predefFalse - (EInt i, EInt j) | f == cEqInt -> retb $ if i==j then predefTrue else predefFalse - (EInt i, EInt j) | f == cLessInt -> retb $ if i<j then predefTrue else predefFalse - (EInt i, EInt j) | f == cPlus -> retb $ EInt $ i+j - (_, t) | f == cShow && notVar t -> retb $ foldrC $ map K $ words $ render (ppTerm Unqualified 0 t) - (_, K s) | f == cRead -> retb $ Cn (identS s) --- because of K, only works for atomic tags - (_, t) | f == cToStr -> trm2str t >>= retb - _ -> retb t ---- prtBad "cannot compute predefined" t - - -- three-place functions - App (App (Q (mod,f)) z0) y0 | mod == cPredef -> do - (y,_) <- appPredefined y0 - (z,_) <- appPredefined z0 - case (z, y, x) of - (ty,op,t) | f == cMapStr -> retf $ mapStr ty op t - _ | f == cEqVal && notVar y && notVar x -> retb $ if y==x then predefTrue else predefFalse - _ -> retb t ---- prtBad "cannot compute predefined" t - - _ -> retb t ---- prtBad "cannot compute predefined" t - _ -> retb t - ---- should really check the absence of arg variables - where - retb t = return (retc t,True) -- no further computing needed - retf t = return (retc t,False) -- must be computed further - retc t = case t of - K [] -> t - K s -> foldr1 C (map K (words s)) - _ -> t - norm t = case t of - Empty -> K [] - C u v -> case (norm u,norm v) of - (K x,K y) -> K (x +++ y) - _ -> t - _ -> t - notVar t = case t of - Vr _ -> False - App f a -> notVar f && notVar a - _ -> True ---- would need to check that t is a value - foldrC ts = if null ts then Empty else foldr1 C ts - --- read makes variables into constants - -predefTrue = QC (cPredef,cPTrue) -predefFalse = QC (cPredef,cPFalse) - -substring :: String -> String -> Bool -substring s t = case (s,t) of - (c:cs, d:ds) -> (c == d && substring cs ds) || substring s ds - ([],_) -> True - _ -> False - -trm2str :: Term -> Err Term -trm2str t = case t of - R ((_,(_,s)):_) -> trm2str s - T _ ((_,s):_) -> trm2str s - V _ (s:_) -> trm2str s - C _ _ -> return $ t - K _ -> return $ t - S c _ -> trm2str c - Empty -> return $ t - _ -> Bad (render (text "cannot get Str from term" <+> ppTerm Unqualified 0 t)) - --- simultaneous recursion on type and term: type arg is essential! --- But simplify the task by assuming records are type-annotated --- (this has been done in type checking) -mapStr :: Type -> Term -> Term -> Term -mapStr ty f t = case (ty,t) of - _ | elem ty [typeStr,typeTok] -> App f t - (_, R ts) -> R [(l,mapField v) | (l,v) <- ts] - (Table a b,T ti cs) -> T ti [(p,mapStr b f v) | (p,v) <- cs] - _ -> t - where - mapField (mty,te) = case mty of - Just ty -> (mty,mapStr ty f te) - _ -> (mty,te) --} |
