{-# LANGUAGE TypeFamilies #-} ---------------------------------------------------------------------------- -- | -- Module : Haddock.Interface.Rename -- Copyright : (c) Simon Marlow 2003-2006, -- David Waern 2006-2009 -- License : BSD-like -- -- Maintainer : haddock@projects.haskell.org -- Stability : experimental -- Portability : portable ----------------------------------------------------------------------------- module Haddock.Interface.Rename (renameInterface) where import Data.Traversable (traverse, Traversable) import Haddock.GhcUtils import Haddock.Types import Bag (emptyBag) import GHC hiding (NoLink) import Name import NameSet import Coercion import Control.Applicative import Control.Monad hiding (mapM) import Data.List import qualified Data.Map as Map hiding ( Map ) import Data.Traversable (mapM) import Prelude hiding (mapM) renameInterface :: DynFlags -> LinkEnv -> Bool -> Interface -> ErrMsgM Interface renameInterface dflags renamingEnv warnings iface = -- first create the local env, where every name exported by this module -- is mapped to itself, and everything else comes from the global renaming -- env let localEnv = foldl fn renamingEnv (ifaceVisibleExports iface) where fn env name = Map.insert name (ifaceMod iface) env -- rename names in the exported declarations to point to things that -- are closer to, or maybe even exported by, the current module. (renamedExportItems, missingNames1) = runRnFM localEnv (renameExportItems (ifaceExportItems iface)) (rnDocMap, missingNames2) = runRnFM localEnv (mapM renameDoc (ifaceDocMap iface)) (rnArgMap, missingNames3) = runRnFM localEnv (mapM (mapM renameDoc) (ifaceArgMap iface)) (finalModuleDoc, missingNames4) = runRnFM localEnv (renameDocumentation (ifaceDoc iface)) -- combine the missing names and filter out the built-ins, which would -- otherwise allways be missing. missingNames = nub $ filter isExternalName -- XXX: isExternalName filters out too much (missingNames1 ++ missingNames2 ++ missingNames3 ++ missingNames4) -- filter out certain built in type constructors using their string -- representation. TODO: use the Name constants from the GHC API. -- strings = filter (`notElem` ["()", "[]", "(->)"]) -- (map pretty missingNames) strings = map (pretty dflags) . filter (\n -> not (isSystemName n || isBuiltInSyntax n)) $ missingNames in do -- report things that we couldn't link to. Only do this for non-hidden -- modules. unless (OptHide `elem` ifaceOptions iface || null strings || not warnings) $ tell ["Warning: " ++ moduleString (ifaceMod iface) ++ ": could not find link destinations for:\n"++ unwords (" " : strings) ] return $ iface { ifaceRnDoc = finalModuleDoc, ifaceRnDocMap = rnDocMap, ifaceRnArgMap = rnArgMap, ifaceRnExportItems = renamedExportItems } -------------------------------------------------------------------------------- -- 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 RnM a = RnM { unRn :: (Name -> (Bool, DocName)) -- name lookup function -> (a,[Name]) } instance Monad RnM where (>>=) = thenRn return = returnRn instance Functor RnM where fmap f x = do a <- x; return (f a) instance Applicative RnM where pure = return (<*>) = ap returnRn :: a -> RnM a returnRn a = RnM (const (a,[])) thenRn :: RnM a -> (a -> RnM b) -> RnM 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 (const ((),[name])) lookupRn :: Name -> RnM DocName lookupRn name = do lkp <- getLookupRn case lkp name of (False,maps_to) -> do outRn name; return maps_to (True, maps_to) -> return maps_to runRnFM :: LinkEnv -> RnM a -> (a,[Name]) runRnFM env rn = unRn rn lkp where lkp n = case Map.lookup n env of Nothing -> (False, Undocumented n) Just mdl -> (True, Documented n mdl) -------------------------------------------------------------------------------- -- Renaming -------------------------------------------------------------------------------- rename :: Name -> RnM DocName rename = lookupRn renameL :: Located Name -> RnM (Located DocName) renameL = mapM rename renameExportItems :: [ExportItem Name] -> RnM [ExportItem DocName] renameExportItems = mapM renameExportItem renameDocForDecl :: DocForDecl Name -> RnM (DocForDecl DocName) renameDocForDecl (doc, fnArgsDoc) = (,) <$> renameDocumentation doc <*> renameFnArgsDoc fnArgsDoc renameDocumentation :: Documentation Name -> RnM (Documentation DocName) renameDocumentation (Documentation mDoc mWarning) = Documentation <$> mapM renameDoc mDoc <*> mapM renameDoc mWarning renameLDocHsSyn :: LHsDocString -> RnM LHsDocString renameLDocHsSyn = return renameDoc :: Traversable t => t Name -> RnM (t DocName) renameDoc = traverse rename renameFnArgsDoc :: FnArgsDoc Name -> RnM (FnArgsDoc DocName) renameFnArgsDoc = mapM renameDoc renameLType :: LHsType Name -> RnM (LHsType DocName) renameLType = mapM renameType renameLKind :: LHsKind Name -> RnM (LHsKind DocName) renameLKind = renameLType renameMaybeLKind :: Maybe (LHsKind Name) -> RnM (Maybe (LHsKind DocName)) renameMaybeLKind = traverse renameLKind renameType :: HsType Name -> RnM (HsType DocName) renameType t = case t of HsForAllTy expl tyvars lcontext ltype -> do tyvars' <- renameLTyVarBndrs 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 ty -> return . HsListTy =<< renameLType ty HsPArrTy ty -> return . HsPArrTy =<< renameLType ty HsIParamTy n ty -> liftM (HsIParamTy n) (renameLType ty) HsEqTy ty1 ty2 -> liftM2 HsEqTy (renameLType ty1) (renameLType ty2) HsTupleTy b ts -> return . HsTupleTy b =<< mapM renameLType ts HsOpTy a (w, L loc op) b -> do op' <- rename op a' <- renameLType a b' <- renameLType b return (HsOpTy a' (w, L loc op') b') HsParTy ty -> return . HsParTy =<< renameLType ty HsKindSig ty k -> do ty' <- renameLType ty k' <- renameLKind k return (HsKindSig ty' k') HsDocTy ty doc -> do ty' <- renameLType ty doc' <- renameLDocHsSyn doc return (HsDocTy ty' doc') HsTyLit x -> return (HsTyLit x) HsWrapTy a b -> HsWrapTy a <$> renameType b HsRecTy a -> HsRecTy <$> mapM renameConDeclFieldField a HsCoreTy a -> pure (HsCoreTy a) HsExplicitListTy a b -> HsExplicitListTy a <$> mapM renameLType b HsExplicitTupleTy a b -> HsExplicitTupleTy a <$> mapM renameLType b HsQuasiQuoteTy a -> HsQuasiQuoteTy <$> renameHsQuasiQuote a HsSpliceTy _ _ -> error "renameType: HsSpliceTy" renameHsQuasiQuote :: HsQuasiQuote Name -> RnM (HsQuasiQuote DocName) renameHsQuasiQuote (HsQuasiQuote a b c) = HsQuasiQuote <$> rename a <*> pure b <*> pure c renameLTyVarBndrs :: LHsTyVarBndrs Name -> RnM (LHsTyVarBndrs DocName) renameLTyVarBndrs (HsQTvs { hsq_kvs = _, hsq_tvs = tvs }) = do { tvs' <- mapM renameLTyVarBndr tvs ; return (HsQTvs { hsq_kvs = error "haddock:renameLTyVarBndrs", hsq_tvs = tvs' }) } -- This is rather bogus, but I'm not sure what else to do renameLTyVarBndr :: LHsTyVarBndr Name -> RnM (LHsTyVarBndr DocName) renameLTyVarBndr (L loc (UserTyVar n)) = do { n' <- rename n ; return (L loc (UserTyVar n')) } renameLTyVarBndr (L loc (KindedTyVar n kind)) = do { n' <- rename n ; kind' <- renameLKind kind ; return (L loc (KindedTyVar n' kind')) } renameLContext :: Located [LHsType Name] -> RnM (Located [LHsType DocName]) renameLContext (L loc context) = do context' <- mapM renameLType context return (L loc context') renameInstHead :: InstHead Name -> RnM (InstHead DocName) renameInstHead (className, k, types, rest) = do className' <- rename className k' <- mapM renameType k types' <- mapM renameType types rest' <- case rest of ClassInst cs -> ClassInst <$> mapM renameType cs TypeInst ts -> TypeInst <$> traverse renameType ts DataInst dd -> DataInst <$> renameTyClD dd return (className', k', types', rest') renameLDecl :: LHsDecl Name -> RnM (LHsDecl DocName) renameLDecl (L loc d) = return . L loc =<< renameDecl d renameDecl :: HsDecl Name -> RnM (HsDecl DocName) renameDecl decl = case decl 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') InstD d -> do d' <- renameInstD d return (InstD d') _ -> error "renameDecl" renameLThing :: (a Name -> RnM (a DocName)) -> Located (a Name) -> RnM (Located (a DocName)) renameLThing fn (L loc x) = return . L loc =<< fn x renameTyClD :: TyClDecl Name -> RnM (TyClDecl DocName) renameTyClD d = case d of -- TyFamily flav lname ltyvars kind tckind -> do FamDecl { tcdFam = decl } -> do decl' <- renameFamilyDecl decl return (FamDecl { tcdFam = decl' }) SynDecl { tcdLName = lname, tcdTyVars = tyvars, tcdRhs = rhs, tcdFVs = _fvs } -> do lname' <- renameL lname tyvars' <- renameLTyVarBndrs tyvars rhs' <- renameLType rhs return (SynDecl { tcdLName = lname', tcdTyVars = tyvars', tcdRhs = rhs', tcdFVs = placeHolderNames }) DataDecl { tcdLName = lname, tcdTyVars = tyvars, tcdDataDefn = defn, tcdFVs = _fvs } -> do lname' <- renameL lname tyvars' <- renameLTyVarBndrs tyvars defn' <- renameDataDefn defn return (DataDecl { tcdLName = lname', tcdTyVars = tyvars', tcdDataDefn = defn', tcdFVs = placeHolderNames }) ClassDecl { tcdCtxt = lcontext, tcdLName = lname, tcdTyVars = ltyvars , tcdFDs = lfundeps, tcdSigs = lsigs, tcdATs = ats, tcdATDefs = at_defs } -> do lcontext' <- renameLContext lcontext lname' <- renameL lname ltyvars' <- renameLTyVarBndrs ltyvars lfundeps' <- mapM renameLFunDep lfundeps lsigs' <- mapM renameLSig lsigs ats' <- mapM (renameLThing renameFamilyDecl) ats at_defs' <- mapM renameLTyFamDefltEqn at_defs -- we don't need the default methods or the already collected doc entities return (ClassDecl { tcdCtxt = lcontext', tcdLName = lname', tcdTyVars = ltyvars' , tcdFDs = lfundeps', tcdSigs = lsigs', tcdMeths= emptyBag , tcdATs = ats', tcdATDefs = at_defs', tcdDocs = [], tcdFVs = placeHolderNames }) where renameLFunDep (L loc (xs, ys)) = do xs' <- mapM rename xs ys' <- mapM rename ys return (L loc (xs', ys')) renameLSig (L loc sig) = return . L loc =<< renameSig sig renameFamilyDecl :: FamilyDecl Name -> RnM (FamilyDecl DocName) renameFamilyDecl (FamilyDecl { fdInfo = info, fdLName = lname , fdTyVars = ltyvars, fdKindSig = tckind }) = do info' <- renameFamilyInfo info lname' <- renameL lname ltyvars' <- renameLTyVarBndrs ltyvars tckind' <- renameMaybeLKind tckind return (FamilyDecl { fdInfo = info', fdLName = lname' , fdTyVars = ltyvars', fdKindSig = tckind' }) renameFamilyInfo :: FamilyInfo Name -> RnM (FamilyInfo DocName) renameFamilyInfo DataFamily = return DataFamily renameFamilyInfo OpenTypeFamily = return OpenTypeFamily renameFamilyInfo (ClosedTypeFamily eqns) = do { eqns' <- mapM renameLTyFamInstEqn eqns ; return $ ClosedTypeFamily eqns' } renameDataDefn :: HsDataDefn Name -> RnM (HsDataDefn DocName) renameDataDefn (HsDataDefn { dd_ND = nd, dd_ctxt = lcontext, dd_cType = cType , dd_kindSig = k, dd_cons = cons }) = do lcontext' <- renameLContext lcontext k' <- renameMaybeLKind k cons' <- mapM (mapM renameCon) cons -- I don't think we need the derivings, so we return Nothing return (HsDataDefn { dd_ND = nd, dd_ctxt = lcontext', dd_cType = cType , dd_kindSig = k', dd_cons = cons', dd_derivs = Nothing }) renameCon :: ConDecl Name -> RnM (ConDecl DocName) renameCon decl@(ConDecl { con_names = lnames, con_qvars = ltyvars , con_cxt = lcontext, con_details = details , con_res = restype, con_doc = mbldoc }) = do lnames' <- mapM renameL lnames ltyvars' <- renameLTyVarBndrs ltyvars lcontext' <- renameLContext lcontext details' <- renameDetails details restype' <- renameResType restype mbldoc' <- mapM renameLDocHsSyn mbldoc return (decl { con_names = lnames', con_qvars = ltyvars', con_cxt = lcontext' , con_details = details', con_res = restype', con_doc = mbldoc' }) where renameDetails (RecCon fields) = do fields' <- mapM renameConDeclFieldField fields return (RecCon fields') renameDetails (PrefixCon ps) = return . PrefixCon =<< mapM renameLType ps renameDetails (InfixCon a b) = do a' <- renameLType a b' <- renameLType b return (InfixCon a' b') renameResType (ResTyH98) = return ResTyH98 renameResType (ResTyGADT t) = return . ResTyGADT =<< renameLType t renameConDeclFieldField :: LConDeclField Name -> RnM (LConDeclField DocName) renameConDeclFieldField (L l (ConDeclField names t doc)) = do names' <- mapM renameL names t' <- renameLType t doc' <- mapM renameLDocHsSyn doc return $ L l (ConDeclField names' t' doc') renameSig :: Sig Name -> RnM (Sig DocName) renameSig sig = case sig of TypeSig lnames ltype -> do lnames' <- mapM renameL lnames ltype' <- renameLType ltype return (TypeSig lnames' ltype') PatSynSig lname (flag, qtvs) lreq lprov lty -> do lname' <- renameL lname qtvs' <- renameLTyVarBndrs qtvs lreq' <- renameLContext lreq lprov' <- renameLContext lprov lty' <- renameLType lty return $ PatSynSig lname' (flag, qtvs') lreq' lprov' lty' FixSig (FixitySig lnames fixity) -> do lnames' <- mapM renameL lnames return $ FixSig (FixitySig lnames' fixity) MinimalSig s -> MinimalSig <$> traverse renameL s -- we have filtered out all other kinds of signatures in Interface.Create _ -> error "expected TypeSig" renameForD :: ForeignDecl Name -> RnM (ForeignDecl DocName) renameForD (ForeignImport lname ltype co x) = do lname' <- renameL lname ltype' <- renameLType ltype return (ForeignImport lname' ltype' co x) renameForD (ForeignExport lname ltype co x) = do lname' <- renameL lname ltype' <- renameLType ltype return (ForeignExport lname' ltype' co x) renameInstD :: InstDecl Name -> RnM (InstDecl DocName) renameInstD (ClsInstD { cid_inst = d }) = do d' <- renameClsInstD d return (ClsInstD { cid_inst = d' }) renameInstD (TyFamInstD { tfid_inst = d }) = do d' <- renameTyFamInstD d return (TyFamInstD { tfid_inst = d' }) renameInstD (DataFamInstD { dfid_inst = d }) = do d' <- renameDataFamInstD d return (DataFamInstD { dfid_inst = d' }) renameClsInstD :: ClsInstDecl Name -> RnM (ClsInstDecl DocName) renameClsInstD (ClsInstDecl { cid_overlap_mode = omode , cid_poly_ty =ltype, cid_tyfam_insts = lATs , cid_datafam_insts = lADTs }) = do ltype' <- renameLType ltype lATs' <- mapM (mapM renameTyFamInstD) lATs lADTs' <- mapM (mapM renameDataFamInstD) lADTs return (ClsInstDecl { cid_overlap_mode = omode , cid_poly_ty = ltype', cid_binds = emptyBag , cid_sigs = [] , cid_tyfam_insts = lATs', cid_datafam_insts = lADTs' }) renameTyFamInstD :: TyFamInstDecl Name -> RnM (TyFamInstDecl DocName) renameTyFamInstD (TyFamInstDecl { tfid_eqn = eqn }) = do { eqn' <- renameLTyFamInstEqn eqn ; return (TyFamInstDecl { tfid_eqn = eqn' , tfid_fvs = placeHolderNames }) } renameLTyFamInstEqn :: LTyFamInstEqn Name -> RnM (LTyFamInstEqn DocName) renameLTyFamInstEqn (L loc (TyFamEqn { tfe_tycon = tc, tfe_pats = pats_w_bndrs, tfe_rhs = rhs })) = do { tc' <- renameL tc ; pats' <- mapM renameLType (hswb_cts pats_w_bndrs) ; rhs' <- renameLType rhs ; return (L loc (TyFamEqn { tfe_tycon = tc' , tfe_pats = HsWB pats' PlaceHolder PlaceHolder , tfe_rhs = rhs' })) } renameLTyFamDefltEqn :: LTyFamDefltEqn Name -> RnM (LTyFamDefltEqn DocName) renameLTyFamDefltEqn (L loc (TyFamEqn { tfe_tycon = tc, tfe_pats = tvs, tfe_rhs = rhs })) = do { tc' <- renameL tc ; tvs' <- renameLTyVarBndrs tvs ; rhs' <- renameLType rhs ; return (L loc (TyFamEqn { tfe_tycon = tc' , tfe_pats = tvs' , tfe_rhs = rhs' })) } renameDataFamInstD :: DataFamInstDecl Name -> RnM (DataFamInstDecl DocName) renameDataFamInstD (DataFamInstDecl { dfid_tycon = tc, dfid_pats = pats_w_bndrs, dfid_defn = defn }) = do { tc' <- renameL tc ; pats' <- mapM renameLType (hswb_cts pats_w_bndrs) ; defn' <- renameDataDefn defn ; return (DataFamInstDecl { dfid_tycon = tc' , dfid_pats = HsWB pats' PlaceHolder PlaceHolder , dfid_defn = defn', dfid_fvs = placeHolderNames }) } renameExportItem :: ExportItem Name -> RnM (ExportItem DocName) renameExportItem item = case item of ExportModule mdl -> return (ExportModule mdl) ExportGroup lev id_ doc -> do doc' <- renameDoc doc return (ExportGroup lev id_ doc') ExportDecl decl doc subs instances fixities splice -> do decl' <- renameLDecl decl doc' <- renameDocForDecl doc subs' <- mapM renameSub subs instances' <- forM instances $ \(inst, idoc) -> do inst' <- renameInstHead inst idoc' <- mapM renameDoc idoc return (inst', idoc') fixities' <- forM fixities $ \(name, fixity) -> do name' <- lookupRn name return (name', fixity) return (ExportDecl decl' doc' subs' instances' fixities' splice) ExportNoDecl x subs -> do x' <- lookupRn x subs' <- mapM lookupRn subs return (ExportNoDecl x' subs') ExportDoc doc -> do doc' <- renameDoc doc return (ExportDoc doc') renameSub :: (Name, DocForDecl Name) -> RnM (DocName, DocForDecl DocName) renameSub (n,doc) = do n' <- rename n doc' <- renameDocForDecl doc return (n', doc') type instance PostRn DocName NameSet = PlaceHolder type instance PostRn DocName Fixity = PlaceHolder type instance PostRn DocName Bool = PlaceHolder type instance PostRn DocName [Name] = PlaceHolder type instance PostTc DocName Kind = PlaceHolder type instance PostTc DocName Type = PlaceHolder type instance PostTc DocName Coercion = PlaceHolder