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Diffstat (limited to 'src/Haddock/Syntax/Rename.hs')
-rw-r--r-- | src/Haddock/Syntax/Rename.hs | 333 |
1 files changed, 333 insertions, 0 deletions
diff --git a/src/Haddock/Syntax/Rename.hs b/src/Haddock/Syntax/Rename.hs new file mode 100644 index 00000000..81dfb1cc --- /dev/null +++ b/src/Haddock/Syntax/Rename.hs @@ -0,0 +1,333 @@ +-- +-- Haddock - A Haskell Documentation Tool +-- +-- (c) Simon Marlow 2003 +-- + + +module Haddock.Syntax.Rename ( + runRnFM, -- the monad (instance of Monad) + renameDoc, renameMaybeDoc, renameExportItems, +) where + + +import Haddock.Types + +import GHC hiding ( NoLink ) +import Name +import BasicTypes +import SrcLoc +import Bag ( emptyBag ) + +import Data.Map ( Map ) +import qualified Data.Map as Map hiding ( Map ) +import Prelude hiding ( mapM ) +import Data.Traversable ( mapM ) +import Control.Arrow + + +-- ----------------------------------------------------------------------------- +-- Monad for renaming + +-- The monad does two things for us: it passes around the environment for +-- renaming, and it returns a list of names which couldn't be found in +-- the environment. + +newtype GenRnM n a = + RnM { unRn :: (n -> (Bool, DocName)) -- name lookup function + -> (a,[n]) + } + +type RnM a = GenRnM Name a + +instance Monad (GenRnM n) where + (>>=) = thenRn + return = returnRn + +returnRn :: a -> GenRnM n a +returnRn a = RnM (\_ -> (a,[])) +thenRn :: GenRnM n a -> (a -> GenRnM n b) -> GenRnM n b +m `thenRn` k = RnM (\lkp -> case unRn m lkp of + (a,out1) -> case unRn (k a) lkp of + (b,out2) -> (b,out1++out2)) + +getLookupRn :: RnM (Name -> (Bool, DocName)) +getLookupRn = RnM (\lkp -> (lkp,[])) +outRn :: Name -> RnM () +outRn name = RnM (\_ -> ((),[name])) + +lookupRn :: (DocName -> a) -> Name -> RnM a +lookupRn and_then name = do + lkp <- getLookupRn + case lkp name of + (False,maps_to) -> do outRn name; return (and_then maps_to) + (True, maps_to) -> return (and_then maps_to) + +newtype OrdName = MkOrdName Name + +instance Eq OrdName where + (MkOrdName a) == (MkOrdName b) = a == b + +instance Ord OrdName where + (MkOrdName a) `compare` (MkOrdName b) = nameOccName a `compare` nameOccName b + +runRnFM :: Map Name Name -> RnM a -> (a,[Name]) +runRnFM env rn = unRn rn lkp + where + lkp n = case Map.lookup (MkOrdName n) ordEnv of + Nothing -> (False, NoLink n) + Just (MkOrdName q) -> (True, Link q) + + ordEnv = Map.fromList . map (MkOrdName *** MkOrdName) . Map.toList $ env + +-- ----------------------------------------------------------------------------- +-- Renaming + +keep n = NoLink n +keepL (L loc n) = L loc (NoLink n) + +rename = lookupRn id +renameL (L loc name) = return . L loc =<< rename name + +renameExportItems :: [ExportItem Name] -> RnM [ExportItem DocName] +renameExportItems items = mapM renameExportItem items + +renameMaybeDoc :: Maybe (HsDoc Name) -> RnM (Maybe (HsDoc DocName)) +renameMaybeDoc mbDoc = mapM renameDoc mbDoc + +renameLDoc (L loc doc) = return . L loc =<< renameDoc doc + +renameDoc :: HsDoc Name -> RnM (HsDoc DocName) +renameDoc doc = case doc of + DocEmpty -> return DocEmpty + DocAppend a b -> do + a' <- renameDoc a + b' <- renameDoc b + return (DocAppend a' b') + DocString str -> return (DocString str) + DocParagraph doc -> do + doc' <- renameDoc doc + return (DocParagraph doc') + DocIdentifier ids -> do + lkp <- getLookupRn + case [ n | (True, n) <- map lkp ids ] of + ids'@(_:_) -> return (DocIdentifier ids') + [] -> return (DocIdentifier (map NoLink ids)) + DocModule str -> return (DocModule str) + DocEmphasis doc -> do + doc' <- renameDoc doc + return (DocEmphasis doc') + DocMonospaced doc -> do + doc' <- renameDoc doc + return (DocMonospaced doc') + DocUnorderedList docs -> do + docs' <- mapM renameDoc docs + return (DocUnorderedList docs') + DocOrderedList docs -> do + docs' <- mapM renameDoc docs + return (DocOrderedList docs') + DocDefList docs -> do + docs' <- mapM (\(a,b) -> do + a' <- renameDoc a + b' <- renameDoc b + return (a',b')) docs + return (DocDefList docs') + DocCodeBlock doc -> do + doc' <- renameDoc doc + return (DocCodeBlock doc') + DocURL str -> return (DocURL str) + DocAName str -> return (DocAName str) + +renameLPred (L loc p) = return . L loc =<< renamePred p + +renamePred :: HsPred Name -> RnM (HsPred DocName) +renamePred (HsClassP name types) = do + name' <- rename name + types' <- mapM renameLType types + return (HsClassP name' types') +renamePred (HsIParam (IPName name) t) = do + name' <- rename name + t' <- renameLType t + return (HsIParam (IPName name') t') + +renameLType (L loc t) = return . L loc =<< renameType t + +renameType t = case t of + HsForAllTy expl tyvars lcontext ltype -> do + tyvars' <- mapM renameLTyVarBndr tyvars + lcontext' <- renameLContext lcontext + ltype' <- renameLType ltype + return (HsForAllTy expl tyvars' lcontext' ltype') + + HsTyVar n -> return . HsTyVar =<< rename n + HsBangTy b ltype -> return . HsBangTy b =<< renameLType ltype + + HsAppTy a b -> do + a' <- renameLType a + b' <- renameLType b + return (HsAppTy a' b') + + HsFunTy a b -> do + a' <- renameLType a + b' <- renameLType b + return (HsFunTy a' b') + + HsListTy t -> return . HsListTy =<< renameLType t + HsPArrTy t -> return . HsPArrTy =<< renameLType t + + HsTupleTy b ts -> return . HsTupleTy b =<< mapM renameLType ts + + HsOpTy a (L loc op) b -> do + op' <- rename op + a' <- renameLType a + b' <- renameLType b + return (HsOpTy a' (L loc op') b') + + HsParTy t -> return . HsParTy =<< renameLType t + + HsNumTy n -> return (HsNumTy n) + + HsPredTy p -> return . HsPredTy =<< renamePred p + + HsKindSig t k -> do + t' <- renameLType t + return (HsKindSig t' k) + + HsDocTy t doc -> do + t' <- renameLType t + doc' <- renameLDoc doc + return (HsDocTy t' doc') + + _ -> error "renameType" + +renameLTyVarBndr (L loc tv) = do + name' <- rename (hsTyVarName tv) + return $ L loc (replaceTyVarName tv name') + +renameLContext (L loc context) = do + context' <- mapM renameLPred context + return (L loc context') + +renameInstHead :: InstHead Name -> RnM (InstHead DocName) +renameInstHead (preds, className, types) = do + preds' <- mapM renamePred preds + className' <- rename className + types' <- mapM renameType types + return (preds', className', types') + +renameLDecl (L loc d) = return . L loc =<< renameDecl d + +renameDecl d = case d of + TyClD d -> do + d' <- renameTyClD d + return (TyClD d') + SigD s -> do + s' <- renameSig s + return (SigD s') + ForD d -> do + d' <- renameForD d + return (ForD d') + _ -> error "renameDecl" + +renameTyClD d = case d of + ForeignType _ _ _ -> error "renameTyClD" -- I'm guessing these can't be exported + -- ForeignType name a b -> do + -- name' <- renameL name + -- return (ForeignType name' a b) + + TyData x lcontext lname ltyvars _ k cons _ -> do + lcontext' <- renameLContext lcontext + ltyvars' <- mapM renameLTyVarBndr ltyvars + cons' <- mapM renameLCon cons + -- I don't think we need the derivings, so we return Nothing + -- We skip the type patterns too. TODO: find out what they are :-) + return (TyData x lcontext' (keepL lname) ltyvars' Nothing k cons' Nothing) + + TySynonym lname ltyvars typat ltype -> do + ltyvars' <- mapM renameLTyVarBndr ltyvars + ltype' <- renameLType ltype + -- We skip type patterns here as well. + return (TySynonym (keepL lname) ltyvars' Nothing ltype') + + ClassDecl lcontext lname ltyvars lfundeps lsigs _ _ _ -> do + lcontext' <- renameLContext lcontext + ltyvars' <- mapM renameLTyVarBndr ltyvars + lfundeps' <- mapM renameLFunDep lfundeps + lsigs' <- mapM renameLSig lsigs + -- we don't need the default methods or the already collected doc entities + -- we skip the ATs for now. + return (ClassDecl lcontext' (keepL lname) ltyvars' lfundeps' lsigs' emptyBag [] []) + + where + renameLCon (L loc con) = return . L loc =<< renameCon con + renameCon (ConDecl lname expl ltyvars lcontext details restype mbldoc) = do + ltyvars' <- mapM renameLTyVarBndr ltyvars + lcontext' <- renameLContext lcontext + details' <- renameDetails details + restype' <- renameResType restype + mbldoc' <- mapM renameLDoc mbldoc + return (ConDecl (keepL lname) expl ltyvars' lcontext' details' restype' mbldoc') + + renameDetails (RecCon fields) = return . RecCon =<< mapM renameField fields + renameDetails (PrefixCon ps) = return . PrefixCon =<< mapM renameLType ps + renameDetails (InfixCon a b) = do + a' <- renameLType a + b' <- renameLType b + return (InfixCon a' b') + + renameField (ConDeclField name t doc) = do + t' <- renameLType t + doc' <- mapM renameLDoc doc + return (ConDeclField (keepL name) t' doc') + + renameResType (ResTyH98) = return ResTyH98 + renameResType (ResTyGADT t) = return . ResTyGADT =<< renameLType t + + renameLFunDep (L loc (xs, ys)) = return (L loc (map keep xs, map keep ys)) + + renameLSig (L loc sig) = return . L loc =<< renameSig sig + +renameSig sig = case sig of + TypeSig (L loc name) ltype -> do + ltype' <- renameLType ltype + return (TypeSig (L loc (keep name)) ltype') +{- SpecSig lname ltype x -> do + lname' <- renameL lname + ltype' <- renameLType ltype + return (SpecSig lname' ltype' x) + InlineSig lname x -> do + lname' <- renameL lname + return (InlineSig lname' x) + SpecInstSig t -> return . SpecInstSig =<< renameLType t + FixSig fsig -> return . FixSig =<< renameFixitySig fsig + where + renameFixitySig (FixitySig lname x) = do + lname' <- renameL lname + return (FixitySig lname' x) +-} + +renameForD (ForeignImport lname ltype x) = do + ltype' <- renameLType ltype + return (ForeignImport (keepL lname) ltype' x) +renameForD (ForeignExport lname ltype x) = do + ltype' <- renameLType ltype + return (ForeignExport (keepL lname) ltype' x) + +renameExportItem :: ExportItem Name -> RnM (ExportItem DocName) +renameExportItem item = case item of + ExportModule mod -> return (ExportModule mod) + ExportGroup lev id doc -> do + doc' <- renameDoc doc + return (ExportGroup lev id doc') + ExportDecl x decl doc instances -> do + decl' <- renameLDecl decl + doc' <- mapM renameDoc doc + instances' <- mapM renameInstHead instances + return (ExportDecl x decl' doc' instances') + ExportNoDecl x y subs -> do + y' <- lookupRn id y + subs' <- mapM (lookupRn id) subs + return (ExportNoDecl x y' subs') + ExportDoc doc -> do + doc' <- renameDoc doc + return (ExportDoc doc') |