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-rw-r--r--src/GF/Devel/Compile/Refresh.hs118
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diff --git a/src/GF/Devel/Compile/Refresh.hs b/src/GF/Devel/Compile/Refresh.hs
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--- a/src/GF/Devel/Compile/Refresh.hs
+++ /dev/null
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-----------------------------------------------------------------------
--- |
--- Module : Refresh
--- Maintainer : AR
--- Stability : (stable)
--- Portability : (portable)
---
--- > CVS $Date: 2005/04/21 16:22:27 $
--- > CVS $Author: bringert $
--- > CVS $Revision: 1.6 $
---
--- make variable names unique by adding an integer index to each
------------------------------------------------------------------------------
-
-module GF.Devel.Compile.Refresh (
- refreshModule,
- refreshTerm,
- refreshTermN
- ) where
-
-import GF.Devel.Grammar.Grammar
-import GF.Devel.Grammar.Construct
-import GF.Devel.Grammar.Macros
-import GF.Infra.Ident
-
-import GF.Data.Operations
-
-import Control.Monad
-
-
--- for concrete and resource in grammar, before optimizing
-
-refreshModule :: Int -> SourceModule -> Err (SourceModule,Int)
-refreshModule k (m,mo) = do
- (mo',(_,k')) <- appSTM (termOpModule refresh mo) (initIdStateN k)
- return ((m,mo'),k')
-
-
-refreshTerm :: Term -> Err Term
-refreshTerm = refreshTermN 0
-
-refreshTermN :: Int -> Term -> Err Term
-refreshTermN i e = liftM snd $ refreshTermKN i e
-
-refreshTermKN :: Int -> Term -> Err (Int,Term)
-refreshTermKN i e = liftM (\ (t,(_,i)) -> (i,t)) $
- appSTM (refresh e) (initIdStateN i)
-
-refresh :: Term -> STM IdState Term
-refresh e = case e of
-
- Vr x -> liftM Vr (lookVar x)
- Abs x b -> liftM2 Abs (refVarPlus x) (refresh b)
-
- Prod x a b -> do
- a' <- refresh a
- x' <- refVarPlus x
- b' <- refresh b
- return $ Prod x' a' b'
-
- Let (x,(mt,a)) b -> do
- a' <- refresh a
- mt' <- case mt of
- Just t -> refresh t >>= (return . Just)
- _ -> return mt
- x' <- refVar x
- b' <- refresh b
- return (Let (x',(mt',a')) b')
-
- R r -> liftM R $ refreshRecord r
-
- ExtR r s -> liftM2 ExtR (refresh r) (refresh s)
-
- T i cc -> liftM2 T (refreshTInfo i) (mapM refreshCase cc)
-
- _ -> composOp refresh e
-
-refreshCase :: (Patt,Term) -> STM IdState (Patt,Term)
-refreshCase (p,t) = liftM2 (,) (refreshPatt p) (refresh t)
-
-refreshPatt p = case p of
- PV x -> liftM PV (refVarPlus x)
- PC c ps -> liftM (PC c) (mapM refreshPatt ps)
- PP q c ps -> liftM (PP q c) (mapM refreshPatt ps)
- PR r -> liftM PR (mapPairsM refreshPatt r)
- PT t p' -> liftM2 PT (refresh t) (refreshPatt p')
-
- PAs x p' -> liftM2 PAs (refVar x) (refreshPatt p')
-
- PSeq p' q' -> liftM2 PSeq (refreshPatt p') (refreshPatt q')
- PAlt p' q' -> liftM2 PAlt (refreshPatt p') (refreshPatt q')
- PRep p' -> liftM PRep (refreshPatt p')
- PNeg p' -> liftM PNeg (refreshPatt p')
-
- _ -> return p
-
-refreshRecord r = case r of
- [] -> return r
- (x,(mt,a)):b -> do
- a' <- refresh a
- mt' <- case mt of
- Just t -> refresh t >>= (return . Just)
- _ -> return mt
- b' <- refreshRecord b
- return $ (x,(mt',a')) : b'
-
-refreshTInfo i = case i of
- TTyped t -> liftM TTyped $ refresh t
- TComp t -> liftM TComp $ refresh t
- TWild t -> liftM TWild $ refresh t
- _ -> return i
-
--- for abstract syntax
-
-refreshEquation :: Equation -> Err ([Patt],Term)
-refreshEquation pst = err Bad (return . fst) (appSTM (refr pst) initIdState) where
- refr (ps,t) = liftM2 (,) (mapM refreshPatt ps) (refresh t)
-