1 files changed, 0 insertions, 145 deletions
diff --git a/src/GF/Grammar/AbsCompute.hs b/src/GF/Grammar/AbsCompute.hs
deleted file mode 100644
index 57e21f1dd..000000000
--- a/src/GF/Grammar/AbsCompute.hs
+++ /dev/null
@@ -1,145 +0,0 @@
-----------------------------------------------------------------------
--- |
--- Module      : AbsCompute
--- Maintainer  : AR
--- Stability   : (stable)
--- Portability : (portable)
---
--- > CVS $Date: 2005/10/02 20:50:19 $ 
--- > CVS $Author: aarne $
--- > CVS $Revision: 1.8 $
---
--- computation in abstract syntax w.r.t. explicit definitions.
---
--- old GF computation; to be updated
------------------------------------------------------------------------------
-
-module GF.Grammar.AbsCompute (LookDef,
-		   compute, 
-		   computeAbsTerm, 
-		   computeAbsTermIn, 
-		   beta
-		  ) where
-
-import GF.Data.Operations
-
-import GF.Grammar.Abstract
-import GF.Grammar.PrGrammar
-import GF.Grammar.LookAbs
-import GF.Grammar.Compute
-
-import Debug.Trace
-import Data.List(intersperse)
-import Control.Monad (liftM, liftM2)
-
--- for debugging
-tracd m t = t 
--- tracd = trace
-
-compute :: GFCGrammar -> Exp -> Err Exp
-compute = computeAbsTerm
-
-computeAbsTerm :: GFCGrammar -> Exp -> Err Exp
-computeAbsTerm gr = computeAbsTermIn (lookupAbsDef gr) []
-
--- | a hack to make compute work on source grammar as well
-type LookDef = Ident -> Ident -> Err (Maybe Term)
-
-computeAbsTermIn :: LookDef -> [Ident] -> Exp -> Err Exp
-computeAbsTermIn lookd xs e = errIn ("computing" +++ prt e) $ compt xs e where
-  compt vv t = case t of
---    Prod x a b  -> liftM2 (Prod x) (compt vv a) (compt (x:vv) b)
---    Abs x b     -> liftM  (Abs  x)              (compt (x:vv) b)
-    _ -> do
-      let t' = beta vv t
-      (yy,f,aa) <- termForm t'
-      let vv' = yy ++ vv
-      aa'    <- mapM (compt vv') aa
-      case look f of
-        Just (Eqs eqs) -> tracd ("\nmatching" +++ prt f) $ 
-                          case findMatch eqs aa' of
-          Ok (d,g) -> do
-            --- let (xs,ts) = unzip g
-            --- ts' <- alphaFreshAll vv' ts
-            let g' = g --- zip xs ts'
-            d' <- compt vv' $ substTerm vv' g' d
-            tracd ("by Egs:" +++ prt d') $ return $ mkAbs yy $ d'
-          _ -> tracd ("no match" +++ prt t') $ 
-               do
-            let v = mkApp f aa'
-            return $ mkAbs yy $ v
-        Just d -> tracd ("define" +++ prt t') $ do
-          da <- compt vv' $ mkApp d aa' 
-          return $ mkAbs yy $ da
-        _ -> do
-          let t2 = mkAbs yy $ mkApp f aa'
-          tracd ("not defined" +++ prt_ t2) $ return t2
-
-  look t = case t of
-     (Q m f) -> case lookd m f of
-       Ok (Just EData) -> Nothing  -- canonical --- should always be QC
-       Ok md -> md
-       _ -> Nothing
-     Eqs _ -> return t ---- for nested fn
-     _ -> Nothing
-
-beta :: [Ident] -> Exp -> Exp
-beta vv c = case c of
-  Let (x,(_,a)) b -> beta vv $ substTerm vv [(x,beta vv a)] (beta (x:vv) b) 
-  App f         a -> 
-    let (a',f') = (beta vv a, beta vv f) in 
-    case f' of
-      Abs x b -> beta vv $ substTerm vv [(x,a')] (beta (x:vv) b) 
-      _ ->               (if a'==a && f'==f then id else beta vv) $ App f' a'
-  Prod x a b      -> Prod x (beta vv a) (beta (x:vv) b)
-  Abs x b         -> Abs x (beta (x:vv) b)
-  _               -> c
-
--- special version of pattern matching, to deal with comp under lambda
-
-findMatch :: [([Patt],Term)] -> [Term] -> Err (Term, Substitution)
-findMatch cases terms = case cases of
-  [] -> Bad $"no applicable case for" +++ unwords (intersperse "," (map prt terms))
-  (patts,_):_ | length patts /= length terms -> 
-       Bad ("wrong number of args for patterns :" +++ 
-            unwords (map prt patts) +++ "cannot take" +++ unwords (map prt terms))
-  (patts,val):cc -> case mapM tryMatch (zip patts terms) of
-     Ok substs -> return (tracd ("value" +++ prt_ val) val, concat substs)
-     _         -> findMatch cc terms
-
-tryMatch :: (Patt, Term) -> Err [(Ident, Term)]
-tryMatch (p,t) = do 
-  t' <- termForm t
-  trym p t'
- where
-
-  trym p t' = err (\s -> tracd s (Bad s)) (\t -> tracd (prtm p t) (return t)) $ ---- 
-              case (p,t') of
-    (PV IW, _) | notMeta t -> return [] -- optimization with wildcard
-    (PV x,  _) | notMeta t -> return [(x,t)]
-    (PString s, ([],K i,[])) | s==i -> return []
-    (PInt s, ([],EInt i,[])) | s==i -> return []
-    (PFloat s,([],EFloat i,[])) | s==i -> return [] --- rounding?
-    (PP q p pp, ([], QC r f, tt)) | 
-       p `eqStrIdent` f && length pp == length tt -> do
-         matches <- mapM tryMatch (zip pp tt)
-         return (concat matches)
-    (PP q p pp, ([], Q r f, tt)) | 
-       p `eqStrIdent` f && length pp == length tt -> do
-         matches <- mapM tryMatch (zip pp tt)
-         return (concat matches)
-    (PT _ p',_) -> trym p' t'
-    (_, ([],Alias _ _ d,[])) -> tryMatch (p,d)
-    (PAs x p',_) -> do
-       subst <- trym p' t'
-       return $ (x,t) : subst
-    _ -> Bad ("no match in pattern" +++ prt p +++ "for" +++ prt t)
-
-  notMeta e = case e of
-    Meta _  -> False
-    App f a -> notMeta f &&  notMeta a  
-    Abs _ b -> notMeta b
-    _ -> True
-
-  prtm p g = 
-    prt p +++ ":" ++++ unwords ["  " ++ prt_ x +++ "=" +++ prt_ y +++ ";" | (x,y) <- g]