forked from GitHub/gf-core
GF/src is now for 2.9, and the new sources are in src-3.0 - keep it this way until the release of GF 3
This commit is contained in:
aarne
755
src-3.0/GF/Source/SourceToGrammar.hs
Normal file
755
src-3.0/GF/Source/SourceToGrammar.hs
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@@ -0,0 +1,755 @@
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----------------------------------------------------------------------
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-- |
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-- Module : SourceToGrammar
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-- Maintainer : AR
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-- Stability : (stable)
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-- Portability : (portable)
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--
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-- > CVS $Date: 2005/10/04 11:05:07 $
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-- > CVS $Author: aarne $
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-- > CVS $Revision: 1.28 $
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--
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-- based on the skeleton Haskell module generated by the BNF converter
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-----------------------------------------------------------------------------
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module GF.Source.SourceToGrammar ( transGrammar,
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transInclude,
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transModDef,
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transOldGrammar,
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transExp,
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newReservedWords
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) where
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import qualified GF.Grammar.Grammar as G
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import qualified GF.Grammar.PrGrammar as GP
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import qualified GF.Infra.Modules as GM
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import qualified GF.Grammar.Macros as M
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import qualified GF.Compile.Update as U
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import qualified GF.Infra.Option as GO
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import qualified GF.Compile.ModDeps as GD
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import GF.Infra.Ident
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import GF.Source.AbsGF
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import GF.Source.PrintGF
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import GF.Compile.RemoveLiT --- for bw compat
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import GF.Data.Operations
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import GF.Infra.Option
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import Control.Monad
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import Data.Char
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import Data.List (genericReplicate)
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-- based on the skeleton Haskell module generated by the BNF converter
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type Result = Err String
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failure :: Show a => a -> Err b
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failure x = Bad $ "Undefined case: " ++ show x
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prPIdent :: PIdent -> String
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prPIdent (PIdent (_,c)) = c
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getIdentPos :: PIdent -> Err (Ident,Int)
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getIdentPos x = case x of
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PIdent ((line,_),c) -> return (IC c,line)
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transIdent :: PIdent -> Err Ident
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transIdent = liftM fst . getIdentPos
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transName :: Name -> Err Ident
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transName n = case n of
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IdentName i -> transIdent i
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ListName i -> liftM mkListId (transIdent i)
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transGrammar :: Grammar -> Err G.SourceGrammar
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transGrammar x = case x of
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Gr moddefs -> do
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moddefs' <- mapM transModDef moddefs
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GD.mkSourceGrammar moddefs'
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transModDef :: ModDef -> Err (Ident, G.SourceModInfo)
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transModDef x = case x of
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MMain id0 id concspecs -> do
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id0' <- transIdent id0
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id' <- transIdent id
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concspecs' <- mapM transConcSpec concspecs
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return $ (id0', GM.ModMainGrammar (GM.MainGrammar id' concspecs'))
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MModule compl mtyp body -> do
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let mstat' = transComplMod compl
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(trDef, mtyp', id') <- case mtyp of
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MTAbstract id -> do
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id' <- transIdent id
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return (transAbsDef, GM.MTAbstract, id')
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MTResource id -> mkModRes id GM.MTResource body
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MTConcrete id open -> do
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id' <- transIdent id
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open' <- transIdent open
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return (transCncDef, GM.MTConcrete open', id')
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MTTransfer id a b -> do
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id' <- transIdent id
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a' <- transOpen a
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b' <- transOpen a
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return (transAbsDef, GM.MTTransfer a' b', id')
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MTInterface id -> mkModRes id GM.MTInterface body
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MTInstance id open -> do
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open' <- transIdent open
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mkModRes id (GM.MTInstance open') body
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mkBody (mstat', trDef, mtyp', id') body
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where
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mkBody xx@(mstat', trDef, mtyp', id') bod = case bod of
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MNoBody incls -> do
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mkBody xx $ MBody (Ext incls) NoOpens []
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MBody extends opens defs -> do
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extends' <- transExtend extends
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opens' <- transOpens opens
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defs0 <- mapM trDef $ getTopDefs defs
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defs' <- U.buildAnyTree [d | Left ds <- defs0, d <- ds]
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flags' <- return [f | Right fs <- defs0, f <- fs]
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return (id',GM.ModMod (GM.Module mtyp' mstat' flags' extends' opens' defs'))
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MReuse _ -> do
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return (id', GM.ModMod (GM.Module mtyp' mstat' [] [] [] emptyBinTree))
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MUnion imps -> do
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imps' <- mapM transIncluded imps
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return (id',
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GM.ModMod (GM.Module (GM.MTUnion mtyp' imps') mstat' [] [] [] emptyBinTree))
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MWith m insts -> mkBody xx $ MWithEBody [] m insts NoOpens []
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MWithBody m insts opens defs -> mkBody xx $ MWithEBody [] m insts opens defs
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MWithE extends m insts -> mkBody xx $ MWithEBody extends m insts NoOpens []
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MWithEBody extends m insts opens defs -> do
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extends' <- mapM transIncludedExt extends
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m' <- transIncludedExt m
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insts' <- mapM transOpen insts
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opens' <- transOpens opens
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defs0 <- mapM trDef $ getTopDefs defs
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defs' <- U.buildAnyTree [d | Left ds <- defs0, d <- ds]
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flags' <- return [f | Right fs <- defs0, f <- fs]
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return (id',
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GM.ModWith (GM.Module mtyp' mstat' flags' extends' opens' defs') m' insts')
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mkModRes id mtyp body = do
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id' <- transIdent id
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case body of
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MReuse c -> do
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c' <- transIdent c
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mtyp' <- trMReuseType mtyp c'
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return (transResDef, GM.MTReuse mtyp', id')
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_ -> return (transResDef, mtyp, id')
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trMReuseType mtyp c = case mtyp of
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GM.MTInterface -> return $ GM.MRInterface c
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GM.MTInstance op -> return $ GM.MRInstance c op
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GM.MTResource -> return $ GM.MRResource c
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transComplMod :: ComplMod -> GM.ModuleStatus
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transComplMod x = case x of
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CMCompl -> GM.MSComplete
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CMIncompl -> GM.MSIncomplete
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getTopDefs :: [TopDef] -> [TopDef]
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getTopDefs x = x
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transConcSpec :: ConcSpec -> Err (GM.MainConcreteSpec Ident)
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transConcSpec x = case x of
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ConcSpec id concexp -> do
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id' <- transIdent id
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(m,mi,mo) <- transConcExp concexp
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return $ GM.MainConcreteSpec id' m mi mo
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transConcExp :: ConcExp ->
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Err (Ident, Maybe (GM.OpenSpec Ident),Maybe (GM.OpenSpec Ident))
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transConcExp x = case x of
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ConcExp id transfers -> do
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id' <- transIdent id
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trs <- mapM transTransfer transfers
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tin <- case [o | Left o <- trs] of
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[o] -> return $ Just o
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[] -> return $ Nothing
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_ -> Bad "ambiguous transfer in"
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tout <- case [o | Right o <- trs] of
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[o] -> return $ Just o
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[] -> return $ Nothing
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_ -> Bad "ambiguous transfer out"
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return (id',tin,tout)
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transTransfer :: Transfer ->
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Err (Either (GM.OpenSpec Ident)(GM.OpenSpec Ident))
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transTransfer x = case x of
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TransferIn open -> liftM Left $ transOpen open
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TransferOut open -> liftM Right $ transOpen open
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transExtend :: Extend -> Err [(Ident,GM.MInclude Ident)]
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transExtend x = case x of
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Ext ids -> mapM transIncludedExt ids
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NoExt -> return []
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transOpens :: Opens -> Err [GM.OpenSpec Ident]
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transOpens x = case x of
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NoOpens -> return []
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OpenIn opens -> mapM transOpen opens
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transOpen :: Open -> Err (GM.OpenSpec Ident)
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transOpen x = case x of
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OName id -> liftM (GM.OSimple GM.OQNormal) $ transIdent id
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OQualQO q id -> liftM2 GM.OSimple (transQualOpen q) (transIdent id)
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OQual q id m -> liftM3 GM.OQualif (transQualOpen q) (transIdent id) (transIdent m)
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transQualOpen :: QualOpen -> Err GM.OpenQualif
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transQualOpen x = case x of
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QOCompl -> return GM.OQNormal
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QOInterface -> return GM.OQInterface
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QOIncompl -> return GM.OQIncomplete
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transIncluded :: Included -> Err (Ident,[Ident])
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transIncluded x = case x of
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IAll i -> liftM (flip (curry id) []) $ transIdent i
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ISome i ids -> liftM2 (curry id) (transIdent i) (mapM transIdent ids)
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IMinus i ids -> liftM2 (curry id) (transIdent i) (mapM transIdent ids) ----
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transIncludedExt :: Included -> Err (Ident, GM.MInclude Ident)
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transIncludedExt x = case x of
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IAll i -> liftM2 (,) (transIdent i) (return GM.MIAll)
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ISome i ids -> liftM2 (,) (transIdent i) (liftM GM.MIOnly $ mapM transIdent ids)
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IMinus i ids -> liftM2 (,) (transIdent i) (liftM GM.MIExcept $ mapM transIdent ids)
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transAbsDef :: TopDef -> Err (Either [(Ident, G.Info)] [GO.Option])
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transAbsDef x = case x of
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DefCat catdefs -> liftM (Left . concat) $ mapM transCatDef catdefs
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DefFun fundefs -> do
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fundefs' <- mapM transFunDef fundefs
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returnl [(fun, G.AbsFun (yes typ) nope) | (funs,typ) <- fundefs', fun <- funs]
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DefFunData fundefs -> do
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fundefs' <- mapM transFunDef fundefs
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returnl $
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[(cat, G.AbsCat nope (yes [M.cn fun])) | (funs,typ) <- fundefs',
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fun <- funs,
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Ok (_,cat) <- [M.valCat typ]
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] ++
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[(fun, G.AbsFun (yes typ) (yes G.EData)) | (funs,typ) <- fundefs', fun <- funs]
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DefDef defs -> do
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defs' <- liftM concat $ mapM getDefsGen defs
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returnl [(c, G.AbsFun nope pe) | (c,(_,pe)) <- defs']
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DefData ds -> do
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ds' <- mapM transDataDef ds
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returnl $
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[(c, G.AbsCat nope (yes ps)) | (c,ps) <- ds'] ++
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[(f, G.AbsFun nope (yes G.EData)) | (_,fs) <- ds', tf <- fs, f <- funs tf]
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DefTrans defs -> do
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defs' <- liftM concat $ mapM getDefsGen defs
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returnl [(c, G.AbsTrans f) | (c,(_,Yes f)) <- defs']
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DefFlag defs -> liftM Right $ mapM transFlagDef defs
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_ -> Bad $ "illegal definition in abstract module:" ++++ printTree x
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where
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-- to get data constructors as terms
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funs t = case t of
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G.Cn f -> [f]
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G.Q _ f -> [f]
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G.QC _ f -> [f]
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_ -> []
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returnl :: a -> Err (Either a b)
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returnl = return . Left
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transFlagDef :: FlagDef -> Err GO.Option
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transFlagDef x = case x of
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FlagDef f x -> return $ GO.Opt (prPIdent f,[prPIdent x])
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-- | Cat definitions can also return some fun defs
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-- if it is a list category definition
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transCatDef :: CatDef -> Err [(Ident, G.Info)]
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transCatDef x = case x of
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SimpleCatDef id ddecls -> do
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id' <- transIdent id
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liftM (:[]) $ cat id' ddecls
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ListCatDef id ddecls -> listCat id ddecls 0
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ListSizeCatDef id ddecls size -> listCat id ddecls size
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where
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cat i ddecls = do
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-- i <- transIdent id
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cont <- liftM concat $ mapM transDDecl ddecls
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return (i, G.AbsCat (yes cont) nope)
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listCat id ddecls size = do
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id' <- transIdent id
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let
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li = mkListId id'
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baseId = mkBaseId id'
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consId = mkConsId id'
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catd0@(c,G.AbsCat (Yes cont0) _) <- cat li ddecls
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let
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catd = (c,G.AbsCat (Yes cont0) (Yes [M.cn baseId,M.cn consId]))
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cont = [(mkId x i,ty) | (i,(x,ty)) <- zip [0..] cont0]
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xs = map (G.Vr . fst) cont
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cd = M.mkDecl (M.mkApp (G.Vr id') xs)
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lc = M.mkApp (G.Vr li) xs
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niltyp = M.mkProdSimple (cont ++ genericReplicate size cd) lc
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nilfund = (baseId, G.AbsFun (yes niltyp) (yes G.EData))
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constyp = M.mkProdSimple (cont ++ [cd, M.mkDecl lc]) lc
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consfund = (consId, G.AbsFun (yes constyp) (yes G.EData))
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return [catd,nilfund,consfund]
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mkId x i = if isWildIdent x then (mkIdent "x" i) else x
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transFunDef :: FunDef -> Err ([Ident], G.Type)
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transFunDef x = case x of
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FunDef ids typ -> liftM2 (,) (mapM transIdent ids) (transExp typ)
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transDataDef :: DataDef -> Err (Ident,[G.Term])
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transDataDef x = case x of
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DataDef id ds -> liftM2 (,) (transIdent id) (mapM transData ds)
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where
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transData d = case d of
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DataId id -> liftM G.Cn $ transIdent id
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DataQId id0 id -> liftM2 G.QC (transIdent id0) (transIdent id)
|
||||
|
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transResDef :: TopDef -> Err (Either [(Ident, G.Info)] [GO.Option])
|
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transResDef x = case x of
|
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DefPar pardefs -> do
|
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pardefs' <- mapM transParDef pardefs
|
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returnl $ [(p, G.ResParam (if null pars
|
||||
then nope -- abstract param type
|
||||
else (yes (pars,Nothing))))
|
||||
| (p,pars) <- pardefs']
|
||||
++ [(f, G.ResValue (yes (M.mkProdSimple co (G.Cn p),Nothing))) |
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(p,pars) <- pardefs', (f,co) <- pars]
|
||||
|
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{-
|
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---- encoding of AnyInd without changing syntax. AR 20/9/2007
|
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DefOper [DDef [c] (EApp (EInt status) (EIdent mo))] -> do
|
||||
c' <- transName c
|
||||
mo' <- transIdent mo
|
||||
return $ Left [(c',G.AnyInd (status==1) mo')]
|
||||
-}
|
||||
DefOper defs -> do
|
||||
defs' <- liftM concat $ mapM getDefs defs
|
||||
returnl $ concatMap mkOverload [(f, G.ResOper pt pe) | (f,(pt,pe)) <- defs']
|
||||
|
||||
DefLintype defs -> do
|
||||
defs' <- liftM concat $ mapM getDefs defs
|
||||
returnl [(f, G.ResOper pt pe) | (f,(pt,pe)) <- defs']
|
||||
|
||||
DefFlag defs -> liftM Right $ mapM transFlagDef defs
|
||||
_ -> Bad $ "illegal definition form in resource" +++ printTree x
|
||||
where
|
||||
mkOverload (c,j) = case j of
|
||||
G.ResOper _ (Yes (G.App keyw (G.R fs@(_:_:_)))) |
|
||||
isOverloading keyw c fs ->
|
||||
[(c,G.ResOverload [(ty,fu) | (_,(Just ty,fu)) <- fs])]
|
||||
|
||||
-- to enable separare type signature --- not type-checked
|
||||
G.ResOper (Yes (G.App keyw (G.RecType fs@(_:_:_)))) _ |
|
||||
isOverloading keyw c fs -> []
|
||||
_ -> [(c,j)]
|
||||
isOverloading keyw c fs =
|
||||
GP.prt keyw == "overload" && -- overload is a "soft keyword"
|
||||
all (== GP.prt c) (map (GP.prt . fst) fs)
|
||||
|
||||
transParDef :: ParDef -> Err (Ident, [G.Param])
|
||||
transParDef x = case x of
|
||||
ParDefDir id params -> liftM2 (,) (transIdent id) (mapM transParConstr params)
|
||||
ParDefAbs id -> liftM2 (,) (transIdent id) (return [])
|
||||
_ -> Bad $ "illegal definition in resource:" ++++ printTree x
|
||||
|
||||
transCncDef :: TopDef -> Err (Either [(Ident, G.Info)] [GO.Option])
|
||||
transCncDef x = case x of
|
||||
DefLincat defs -> do
|
||||
defs' <- liftM concat $ mapM transPrintDef defs
|
||||
returnl [(f, G.CncCat (yes t) nope nope) | (f,t) <- defs']
|
||||
DefLindef defs -> do
|
||||
defs' <- liftM concat $ mapM getDefs defs
|
||||
returnl [(f, G.CncCat pt pe nope) | (f,(pt,pe)) <- defs']
|
||||
DefLin defs -> do
|
||||
defs' <- liftM concat $ mapM getDefs defs
|
||||
returnl [(f, G.CncFun Nothing pe nope) | (f,(_,pe)) <- defs']
|
||||
DefPrintCat defs -> do
|
||||
defs' <- liftM concat $ mapM transPrintDef defs
|
||||
returnl [(f, G.CncCat nope nope (yes e)) | (f,e) <- defs']
|
||||
DefPrintFun defs -> do
|
||||
defs' <- liftM concat $ mapM transPrintDef defs
|
||||
returnl [(f, G.CncFun Nothing nope (yes e)) | (f,e) <- defs']
|
||||
DefPrintOld defs -> do --- a guess, for backward compatibility
|
||||
defs' <- liftM concat $ mapM transPrintDef defs
|
||||
returnl [(f, G.CncFun Nothing nope (yes e)) | (f,e) <- defs']
|
||||
DefFlag defs -> liftM Right $ mapM transFlagDef defs
|
||||
DefPattern defs -> do
|
||||
defs' <- liftM concat $ mapM getDefs defs
|
||||
let defs2 = [(f, termInPattern t) | (f,(_,Yes t)) <- defs']
|
||||
returnl [(f, G.CncFun Nothing (yes t) nope) | (f,t) <- defs2]
|
||||
|
||||
_ -> errIn ("illegal definition in concrete syntax:") $ transResDef x
|
||||
|
||||
transPrintDef :: PrintDef -> Err [(Ident,G.Term)]
|
||||
transPrintDef x = case x of
|
||||
PrintDef ids exp -> do
|
||||
(ids,e) <- liftM2 (,) (mapM transName ids) (transExp exp)
|
||||
return $ [(i,e) | i <- ids]
|
||||
|
||||
getDefsGen :: Def -> Err [(Ident, (G.Perh G.Type, G.Perh G.Term))]
|
||||
getDefsGen d = case d of
|
||||
DDecl ids t -> do
|
||||
ids' <- mapM transName ids
|
||||
t' <- transExp t
|
||||
return [(i,(yes t', nope)) | i <- ids']
|
||||
DDef ids e -> do
|
||||
ids' <- mapM transName ids
|
||||
e' <- transExp e
|
||||
return [(i,(nope, yes e')) | i <- ids']
|
||||
DFull ids t e -> do
|
||||
ids' <- mapM transName ids
|
||||
t' <- transExp t
|
||||
e' <- transExp e
|
||||
return [(i,(yes t', yes e')) | i <- ids']
|
||||
DPatt id patts e -> do
|
||||
id' <- transName id
|
||||
ps' <- mapM transPatt patts
|
||||
e' <- transExp e
|
||||
return [(id',(nope, yes (G.Eqs [(ps',e')])))]
|
||||
|
||||
-- | sometimes you need this special case, e.g. in linearization rules
|
||||
getDefs :: Def -> Err [(Ident, (G.Perh G.Type, G.Perh G.Term))]
|
||||
getDefs d = case d of
|
||||
DPatt id patts e -> do
|
||||
id' <- transName id
|
||||
xs <- mapM tryMakeVar patts
|
||||
e' <- transExp e
|
||||
return [(id',(nope, yes (M.mkAbs xs e')))]
|
||||
_ -> getDefsGen d
|
||||
|
||||
-- | accepts a pattern that is either a variable or a wild card
|
||||
tryMakeVar :: Patt -> Err Ident
|
||||
tryMakeVar p = do
|
||||
p' <- transPatt p
|
||||
case p' of
|
||||
G.PV i -> return i
|
||||
G.PW -> return identW
|
||||
_ -> Bad $ "not a legal pattern in lambda binding" +++ GP.prt p'
|
||||
|
||||
transExp :: Exp -> Err G.Term
|
||||
transExp x = case x of
|
||||
EIdent id -> liftM G.Vr $ transIdent id
|
||||
EConstr id -> liftM G.Con $ transIdent id
|
||||
ECons id -> liftM G.Cn $ transIdent id
|
||||
EQConstr m c -> liftM2 G.QC (transIdent m) (transIdent c)
|
||||
EQCons m c -> liftM2 G.Q (transIdent m) (transIdent c)
|
||||
EString str -> return $ G.K str
|
||||
ESort sort -> liftM G.Sort $ transSort sort
|
||||
EInt n -> return $ G.EInt n
|
||||
EFloat n -> return $ G.EFloat n
|
||||
EMeta -> return $ M.meta $ M.int2meta 0
|
||||
EEmpty -> return G.Empty
|
||||
-- [ C x_1 ... x_n ] becomes (ListC x_1 ... x_n)
|
||||
EList i es -> do
|
||||
i' <- transIdent i
|
||||
es' <- mapM transExp (exps2list es)
|
||||
return $ foldl G.App (G.Vr (mkListId i')) es'
|
||||
EStrings [] -> return G.Empty
|
||||
EStrings str -> return $ foldr1 G.C $ map G.K $ words str
|
||||
ERecord defs -> erecord2term defs
|
||||
ETupTyp _ _ -> do
|
||||
let tups t = case t of
|
||||
ETupTyp x y -> tups x ++ [y] -- right-associative parsing
|
||||
_ -> [t]
|
||||
es <- mapM transExp $ tups x
|
||||
return $ G.RecType $ M.tuple2recordType es
|
||||
ETuple tuplecomps -> do
|
||||
es <- mapM transExp [e | TComp e <- tuplecomps]
|
||||
return $ G.R $ M.tuple2record es
|
||||
EProj exp id -> liftM2 G.P (transExp exp) (trLabel id)
|
||||
EApp exp0 exp -> liftM2 G.App (transExp exp0) (transExp exp)
|
||||
ETable cases -> liftM (G.T G.TRaw) (transCases cases)
|
||||
ETTable exp cases ->
|
||||
liftM2 (\t c -> G.T (G.TTyped t) c) (transExp exp) (transCases cases)
|
||||
EVTable exp cases ->
|
||||
liftM2 (\t c -> G.V t c) (transExp exp) (mapM transExp cases)
|
||||
ECase exp cases -> do
|
||||
exp' <- transExp exp
|
||||
cases' <- transCases cases
|
||||
let annot = case exp' of
|
||||
G.Typed _ t -> G.TTyped t
|
||||
_ -> G.TRaw
|
||||
return $ G.S (G.T annot cases') exp'
|
||||
ECTable binds exp -> liftM2 M.mkCTable (mapM transBind binds) (transExp exp)
|
||||
|
||||
EVariants exps -> liftM G.FV $ mapM transExp exps
|
||||
EPre exp alts -> liftM2 (curry G.Alts) (transExp exp) (mapM transAltern alts)
|
||||
EStrs exps -> liftM G.Strs $ mapM transExp exps
|
||||
ESelect exp0 exp -> liftM2 G.S (transExp exp0) (transExp exp)
|
||||
EExtend exp0 exp -> liftM2 G.ExtR (transExp exp0) (transExp exp)
|
||||
EAbstr binds exp -> liftM2 M.mkAbs (mapM transBind binds) (transExp exp)
|
||||
ETyped exp0 exp -> liftM2 G.Typed (transExp exp0) (transExp exp)
|
||||
EExample exp str -> liftM2 G.Example (transExp exp) (return str)
|
||||
|
||||
EProd decl exp -> liftM2 M.mkProdSimple (transDecl decl) (transExp exp)
|
||||
ETType exp0 exp -> liftM2 G.Table (transExp exp0) (transExp exp)
|
||||
EConcat exp0 exp -> liftM2 G.C (transExp exp0) (transExp exp)
|
||||
EGlue exp0 exp -> liftM2 G.Glue (transExp exp0) (transExp exp)
|
||||
ELet defs exp -> do
|
||||
exp' <- transExp exp
|
||||
defs0 <- mapM locdef2fields defs
|
||||
defs' <- mapM tryLoc $ concat defs0
|
||||
return $ M.mkLet defs' exp'
|
||||
where
|
||||
tryLoc (c,(mty,Just e)) = return (c,(mty,e))
|
||||
tryLoc (c,_) = Bad $ "local definition of" +++ GP.prt c +++ "without value"
|
||||
ELetb defs exp -> transExp $ ELet defs exp
|
||||
EWhere exp defs -> transExp $ ELet defs exp
|
||||
|
||||
EPattType typ -> liftM G.EPattType (transExp typ)
|
||||
EPatt patt -> liftM G.EPatt (transPatt patt)
|
||||
|
||||
ELString (LString str) -> return $ G.K str
|
||||
ELin id -> liftM G.LiT $ transIdent id
|
||||
|
||||
EEqs eqs -> liftM G.Eqs $ mapM transEquation eqs
|
||||
|
||||
_ -> Bad $ "translation not yet defined for" +++ printTree x ----
|
||||
|
||||
exps2list :: Exps -> [Exp]
|
||||
exps2list NilExp = []
|
||||
exps2list (ConsExp e es) = e : exps2list es
|
||||
|
||||
--- this is complicated: should we change Exp or G.Term ?
|
||||
|
||||
erecord2term :: [LocDef] -> Err G.Term
|
||||
erecord2term ds = do
|
||||
ds' <- mapM locdef2fields ds
|
||||
mkR $ concat ds'
|
||||
where
|
||||
mkR fs = do
|
||||
fs' <- transF fs
|
||||
return $ case fs' of
|
||||
Left ts -> G.RecType ts
|
||||
Right ds -> G.R ds
|
||||
transF [] = return $ Left [] --- empty record always interpreted as record type
|
||||
transF fs@(f:_) = case f of
|
||||
(lab,(Just ty,Nothing)) -> mapM tryRT fs >>= return . Left
|
||||
_ -> mapM tryR fs >>= return . Right
|
||||
tryRT f = case f of
|
||||
(lab,(Just ty,Nothing)) -> return (M.ident2label lab,ty)
|
||||
_ -> Bad $ "illegal record type field" +++ GP.prt (fst f) --- manifest fields ?!
|
||||
tryR f = case f of
|
||||
(lab,(mty, Just t)) -> return (M.ident2label lab,(mty,t))
|
||||
_ -> Bad $ "illegal record field" +++ GP.prt (fst f)
|
||||
|
||||
|
||||
locdef2fields :: LocDef -> Err [(Ident, (Maybe G.Type, Maybe G.Type))]
|
||||
locdef2fields d = case d of
|
||||
LDDecl ids t -> do
|
||||
labs <- mapM transIdent ids
|
||||
t' <- transExp t
|
||||
return [(lab,(Just t',Nothing)) | lab <- labs]
|
||||
LDDef ids e -> do
|
||||
labs <- mapM transIdent ids
|
||||
e' <- transExp e
|
||||
return [(lab,(Nothing, Just e')) | lab <- labs]
|
||||
LDFull ids t e -> do
|
||||
labs <- mapM transIdent ids
|
||||
t' <- transExp t
|
||||
e' <- transExp e
|
||||
return [(lab,(Just t', Just e')) | lab <- labs]
|
||||
|
||||
trLabel :: Label -> Err G.Label
|
||||
trLabel x = case x of
|
||||
|
||||
-- this case is for bward compatibility and should be removed
|
||||
LIdent (PIdent (_,'v':ds@(_:_))) | all isDigit ds -> return $ G.LVar $ readIntArg ds
|
||||
|
||||
LIdent (PIdent (_, s)) -> return $ G.LIdent s
|
||||
LVar x -> return $ G.LVar $ fromInteger x
|
||||
|
||||
transSort :: Sort -> Err String
|
||||
transSort x = case x of
|
||||
_ -> return $ printTree x
|
||||
|
||||
{-
|
||||
--- no more used 7/1/2006 AR
|
||||
transPatts :: Patt -> Err [G.Patt]
|
||||
transPatts p = case p of
|
||||
PDisj p1 p2 -> liftM2 (++) (transPatts p1) (transPatts p2)
|
||||
PC id patts -> liftM (map (G.PC id) . combinations) $ mapM transPatts patts
|
||||
PQC q id patts -> liftM (map (G.PP q id) . combinations) (mapM transPatts patts)
|
||||
|
||||
PR pattasss -> do
|
||||
let (lss,ps) = unzip [(ls,p) | PA ls p <- pattasss]
|
||||
ls = map LIdent $ concat lss
|
||||
ps0 <- mapM transPatts ps
|
||||
let ps' = combinations ps0
|
||||
lss' <- mapM trLabel ls
|
||||
let rss = map (zip lss') ps'
|
||||
return $ map G.PR rss
|
||||
PTup pcs -> do
|
||||
ps0 <- mapM transPatts [e | PTComp e <- pcs]
|
||||
let ps' = combinations ps0
|
||||
return $ map (G.PR . M.tuple2recordPatt) ps'
|
||||
_ -> liftM singleton $ transPatt p
|
||||
-}
|
||||
|
||||
transPatt :: Patt -> Err G.Patt
|
||||
transPatt x = case x of
|
||||
PW -> return G.wildPatt
|
||||
PV id -> liftM G.PV $ transIdent id
|
||||
PC id patts -> liftM2 G.PC (transIdent id) (mapM transPatt patts)
|
||||
PCon id -> liftM2 G.PC (transIdent id) (return [])
|
||||
PInt n -> return $ G.PInt n
|
||||
PFloat n -> return $ G.PFloat n
|
||||
PStr str -> return $ G.PString str
|
||||
PR pattasss -> do
|
||||
let (lss,ps) = unzip [(ls,p) | PA ls p <- pattasss]
|
||||
ls = map LIdent $ concat lss
|
||||
liftM G.PR $ liftM2 zip (mapM trLabel ls) (mapM transPatt ps)
|
||||
PTup pcs ->
|
||||
liftM (G.PR . M.tuple2recordPatt) (mapM transPatt [e | PTComp e <- pcs])
|
||||
PQ id0 id -> liftM3 G.PP (transIdent id0) (transIdent id) (return [])
|
||||
PQC id0 id patts ->
|
||||
liftM3 G.PP (transIdent id0) (transIdent id) (mapM transPatt patts)
|
||||
PDisj p1 p2 -> liftM2 G.PAlt (transPatt p1) (transPatt p2)
|
||||
PSeq p1 p2 -> liftM2 G.PSeq (transPatt p1) (transPatt p2)
|
||||
PRep p -> liftM G.PRep (transPatt p)
|
||||
PNeg p -> liftM G.PNeg (transPatt p)
|
||||
PAs x p -> liftM2 G.PAs (transIdent x) (transPatt p)
|
||||
PChar -> return G.PChar
|
||||
PChars s -> return $ G.PChars s
|
||||
PMacro c -> liftM G.PMacro $ transIdent c
|
||||
PM m c -> liftM2 G.PM (transIdent m) (transIdent c)
|
||||
|
||||
transBind :: Bind -> Err Ident
|
||||
transBind x = case x of
|
||||
BIdent id -> transIdent id
|
||||
BWild -> return identW
|
||||
|
||||
transDecl :: Decl -> Err [G.Decl]
|
||||
transDecl x = case x of
|
||||
DDec binds exp -> do
|
||||
xs <- mapM transBind binds
|
||||
exp' <- transExp exp
|
||||
return [(x,exp') | x <- xs]
|
||||
DExp exp -> liftM (return . M.mkDecl) $ transExp exp
|
||||
|
||||
transCases :: [Case] -> Err [G.Case]
|
||||
transCases = mapM transCase
|
||||
|
||||
transCase :: Case -> Err G.Case
|
||||
transCase (Case p exp) = do
|
||||
patt <- transPatt p
|
||||
exp' <- transExp exp
|
||||
return (patt,exp')
|
||||
|
||||
transEquation :: Equation -> Err G.Equation
|
||||
transEquation x = case x of
|
||||
Equ apatts exp -> liftM2 (,) (mapM transPatt apatts) (transExp exp)
|
||||
|
||||
transAltern :: Altern -> Err (G.Term, G.Term)
|
||||
transAltern x = case x of
|
||||
Alt exp0 exp -> liftM2 (,) (transExp exp0) (transExp exp)
|
||||
|
||||
transParConstr :: ParConstr -> Err G.Param
|
||||
transParConstr x = case x of
|
||||
ParConstr id ddecls -> do
|
||||
id' <- transIdent id
|
||||
ddecls' <- mapM transDDecl ddecls
|
||||
return (id',concat ddecls')
|
||||
|
||||
transDDecl :: DDecl -> Err [G.Decl]
|
||||
transDDecl x = case x of
|
||||
DDDec binds exp -> transDecl $ DDec binds exp
|
||||
DDExp exp -> transDecl $ DExp exp
|
||||
|
||||
-- | to deal with the old format, sort judgements in three modules, forming
|
||||
-- their names from a given string, e.g. file name or overriding user-given string
|
||||
transOldGrammar :: Options -> FilePath -> OldGrammar -> Err G.SourceGrammar
|
||||
transOldGrammar opts name0 x = case x of
|
||||
OldGr includes topdefs -> do --- includes must be collected separately
|
||||
let moddefs = sortTopDefs topdefs
|
||||
g1 <- transGrammar $ Gr moddefs
|
||||
removeLiT g1 --- needed for bw compatibility with an obsolete feature
|
||||
where
|
||||
sortTopDefs ds = [mkAbs a,mkRes ops r,mkCnc ops c] ++ map mkPack ps
|
||||
where
|
||||
ops = map fst ps
|
||||
(a,r,c,ps) = foldr srt ([],[],[],[]) ds
|
||||
srt d (a,r,c,ps) = case d of
|
||||
DefCat catdefs -> (d:a,r,c,ps)
|
||||
DefFun fundefs -> (d:a,r,c,ps)
|
||||
DefFunData fundefs -> (d:a,r,c,ps)
|
||||
DefDef defs -> (d:a,r,c,ps)
|
||||
DefData pardefs -> (d:a,r,c,ps)
|
||||
DefPar pardefs -> (a,d:r,c,ps)
|
||||
DefOper defs -> (a,d:r,c,ps)
|
||||
DefLintype defs -> (a,d:r,c,ps)
|
||||
DefLincat defs -> (a,r,d:c,ps)
|
||||
DefLindef defs -> (a,r,d:c,ps)
|
||||
DefLin defs -> (a,r,d:c,ps)
|
||||
DefPattern defs -> (a,r,d:c,ps)
|
||||
DefFlag defs -> (a,r,d:c,ps) --- a guess
|
||||
DefPrintCat printdefs -> (a,r,d:c,ps)
|
||||
DefPrintFun printdefs -> (a,r,d:c,ps)
|
||||
DefPrintOld printdefs -> (a,r,d:c,ps)
|
||||
DefPackage m ds -> (a,r,c,(m,ds):ps)
|
||||
_ -> (a,r,c,ps)
|
||||
mkAbs a = MModule q (MTAbstract absName) (MBody ne (OpenIn []) (topDefs a))
|
||||
mkRes ps r = MModule q (MTResource resName) (MBody ne (OpenIn ops) (topDefs r))
|
||||
where ops = map OName ps
|
||||
mkCnc ps r = MModule q (MTConcrete cncName absName)
|
||||
(MBody ne (OpenIn (map OName (resName:ps))) (topDefs r))
|
||||
mkPack (m, ds) = MModule q (MTResource m) (MBody ne (OpenIn []) (topDefs ds))
|
||||
topDefs t = t
|
||||
ne = NoExt
|
||||
q = CMCompl
|
||||
|
||||
name = maybe name0 (++ ".gf") $ getOptVal opts useName
|
||||
absName = identPI $ maybe topic id $ getOptVal opts useAbsName
|
||||
resName = identPI $ maybe ("Res" ++ lang) id $ getOptVal opts useResName
|
||||
cncName = identPI $ maybe lang id $ getOptVal opts useCncName
|
||||
|
||||
identPI s = PIdent ((0,0),s)
|
||||
|
||||
(beg,rest) = span (/='.') name
|
||||
(topic,lang) = case rest of -- to avoid overwriting old files
|
||||
".gf" -> ("Abs" ++ beg,"Cnc" ++ beg)
|
||||
".cf" -> ("Abs" ++ beg,"Cnc" ++ beg)
|
||||
".ebnf" -> ("Abs" ++ beg,"Cnc" ++ beg)
|
||||
[] -> ("Abs" ++ beg,"Cnc" ++ beg)
|
||||
_:s -> (beg, takeWhile (/='.') s)
|
||||
|
||||
transInclude :: Include -> Err [FilePath]
|
||||
transInclude x = case x of
|
||||
NoIncl -> return []
|
||||
Incl filenames -> return $ map trans filenames
|
||||
where
|
||||
trans f = case f of
|
||||
FString s -> s
|
||||
FIdent (PIdent (_, s)) -> modif s
|
||||
FSlash filename -> '/' : trans filename
|
||||
FDot filename -> '.' : trans filename
|
||||
FMinus filename -> '-' : trans filename
|
||||
FAddId (PIdent (_, s)) filename -> modif s ++ trans filename
|
||||
modif s = let s' = init s ++ [toLower (last s)] in
|
||||
if elem s' newReservedWords then s' else s
|
||||
--- unsafe hack ; cf. GetGrammar.oldLexer
|
||||
|
||||
|
||||
newReservedWords :: [String]
|
||||
newReservedWords =
|
||||
words $ "abstract concrete interface incomplete " ++
|
||||
"instance out open resource reuse transfer union with where"
|
||||
|
||||
termInPattern :: G.Term -> G.Term
|
||||
termInPattern t = M.mkAbs xx $ G.R [(s, (Nothing, toP body))] where
|
||||
toP t = case t of
|
||||
G.Vr x -> G.P t s
|
||||
_ -> M.composSafeOp toP t
|
||||
s = G.LIdent "s"
|
||||
(xx,body) = abss [] t
|
||||
abss xs t = case t of
|
||||
G.Abs x b -> abss (x:xs) b
|
||||
_ -> (reverse xs,t)
|
||||
|
||||
mkListId,mkConsId,mkBaseId :: Ident -> Ident
|
||||
mkListId = prefixId "List"
|
||||
mkConsId = prefixId "Cons"
|
||||
mkBaseId = prefixId "Base"
|
||||
|
||||
prefixId :: String -> Ident -> Ident
|
||||
prefixId pref id = IC (pref ++ prIdent id)
|
||||
Reference in New Issue
Block a user