X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Frename%2FRnHsSyn.lhs;h=6752218b29e3a1bc2ca46aeb7f0c5f5a7e8e55a7;hb=28a464a75e14cece5db40f2765a29348273ff2d2;hp=4789d89c18bfc37e4800cc9ddc41eabdc1b7303b;hpb=2c6d73e2ca9a545c4295c6f532cd3612e7fd3d8d;p=ghc-hetmet.git diff --git a/ghc/compiler/rename/RnHsSyn.lhs b/ghc/compiler/rename/RnHsSyn.lhs index 4789d89..6752218 100644 --- a/ghc/compiler/rename/RnHsSyn.lhs +++ b/ghc/compiler/rename/RnHsSyn.lhs @@ -4,48 +4,27 @@ \section[RnHsSyn]{Specialisations of the @HsSyn@ syntax for the renamer} \begin{code} -module RnHsSyn where +module RnHsSyn( + -- Names + charTyCon_name, listTyCon_name, parrTyCon_name, tupleTyCon_name, + extractHsTyVars, extractHsTyNames, extractHsTyNames_s, + extractFunDepNames, extractHsCtxtTyNames, extractHsPredTyNames, + + -- Free variables + hsSigsFVs, hsSigFVs, conDeclFVs, bangTyFVs, + + maybeGenericMatch + ) where #include "HsVersions.h" import HsSyn -import HsCore -import Class ( FunDep, DefMeth(..) ) -import TysWiredIn ( tupleTyCon, listTyCon, charTyCon ) +import Class ( FunDep ) +import TysWiredIn ( tupleTyCon, listTyCon, parrTyCon, charTyCon ) import Name ( Name, getName, isTyVarName ) import NameSet import BasicTypes ( Boxity ) -import Outputable -\end{code} - - -\begin{code} -type RenamedArithSeqInfo = ArithSeqInfo Name RenamedPat -type RenamedClassOpSig = Sig Name -type RenamedConDecl = ConDecl Name -type RenamedContext = HsContext Name -type RenamedHsDecl = HsDecl Name RenamedPat -type RenamedRuleDecl = RuleDecl Name RenamedPat -type RenamedTyClDecl = TyClDecl Name RenamedPat -type RenamedDefaultDecl = DefaultDecl Name -type RenamedForeignDecl = ForeignDecl Name -type RenamedGRHS = GRHS Name RenamedPat -type RenamedGRHSs = GRHSs Name RenamedPat -type RenamedHsBinds = HsBinds Name RenamedPat -type RenamedHsExpr = HsExpr Name RenamedPat -type RenamedHsModule = HsModule Name RenamedPat -type RenamedInstDecl = InstDecl Name RenamedPat -type RenamedMatchContext = HsMatchContext Name -type RenamedMatch = Match Name RenamedPat -type RenamedMonoBinds = MonoBinds Name RenamedPat -type RenamedPat = InPat Name -type RenamedHsType = HsType Name -type RenamedHsPred = HsPred Name -type RenamedRecordBinds = HsRecordBinds Name RenamedPat -type RenamedSig = Sig Name -type RenamedStmt = Stmt Name RenamedPat -type RenamedFixitySig = FixitySig Name -type RenamedDeprecation = DeprecDecl Name +import SrcLoc ( Located(..), unLoc ) \end{code} %************************************************************************ @@ -57,43 +36,51 @@ type RenamedDeprecation = DeprecDecl Name These free-variable finders returns tycons and classes too. \begin{code} -charTyCon_name, listTyCon_name :: Name +charTyCon_name, listTyCon_name, parrTyCon_name :: Name charTyCon_name = getName charTyCon listTyCon_name = getName listTyCon +parrTyCon_name = getName parrTyCon tupleTyCon_name :: Boxity -> Int -> Name tupleTyCon_name boxity n = getName (tupleTyCon boxity n) -extractHsTyVars :: RenamedHsType -> NameSet +extractHsTyVars :: LHsType Name -> NameSet extractHsTyVars x = filterNameSet isTyVarName (extractHsTyNames x) extractFunDepNames :: FunDep Name -> NameSet extractFunDepNames (ns1, ns2) = mkNameSet ns1 `unionNameSets` mkNameSet ns2 -extractHsTyNames :: RenamedHsType -> NameSet +extractHsTyNames :: LHsType Name -> NameSet extractHsTyNames ty - = get ty + = getl ty where - get (HsAppTy ty1 ty2) = get ty1 `unionNameSets` get ty2 - get (HsListTy ty) = unitNameSet listTyCon_name `unionNameSets` get ty - get (HsTupleTy con tys) = hsTupConFVs con `unionNameSets` extractHsTyNames_s tys - get (HsFunTy ty1 ty2) = get ty1 `unionNameSets` get ty2 + getl (L _ ty) = get ty + + get (HsAppTy ty1 ty2) = getl ty1 `unionNameSets` getl ty2 + get (HsListTy ty) = unitNameSet listTyCon_name `unionNameSets` getl ty + get (HsPArrTy ty) = unitNameSet parrTyCon_name `unionNameSets` getl ty + get (HsTupleTy con tys) = extractHsTyNames_s tys + get (HsFunTy ty1 ty2) = getl ty1 `unionNameSets` getl ty2 get (HsPredTy p) = extractHsPredTyNames p - get (HsOpTy ty1 tycon ty2) = get ty1 `unionNameSets` get ty2 `unionNameSets` - unitNameSet tycon + get (HsOpTy ty1 op ty2) = getl ty1 `unionNameSets` getl ty2 `unionNameSets` unitNameSet (unLoc op) + get (HsParTy ty) = getl ty + get (HsBangTy _ ty) = getl ty get (HsNumTy n) = emptyNameSet get (HsTyVar tv) = unitNameSet tv - get (HsForAllTy (Just tvs) - ctxt ty) = (extractHsCtxtTyNames ctxt `unionNameSets` get ty) + get (HsSpliceTy _) = emptyNameSet -- Type splices mention no type variables + get (HsKindSig ty k) = getl ty + get (HsForAllTy _ tvs + ctxt ty) = (extractHsCtxtTyNames ctxt + `unionNameSets` getl ty) `minusNameSet` - mkNameSet (hsTyVarNames tvs) - get ty@(HsForAllTy Nothing _ _) = pprPanic "extractHsTyNames" (ppr ty) + mkNameSet (hsLTyVarNames tvs) -extractHsTyNames_s :: [RenamedHsType] -> NameSet +extractHsTyNames_s :: [LHsType Name] -> NameSet extractHsTyNames_s tys = foldr (unionNameSets . extractHsTyNames) emptyNameSet tys -extractHsCtxtTyNames :: RenamedContext -> NameSet -extractHsCtxtTyNames ctxt = foldr (unionNameSets . extractHsPredTyNames) emptyNameSet ctxt +extractHsCtxtTyNames :: LHsContext Name -> NameSet +extractHsCtxtTyNames (L _ ctxt) + = foldr (unionNameSets . extractHsPredTyNames . unLoc) emptyNameSet ctxt -- You don't import or export implicit parameters, -- so don't mention the IP names @@ -115,128 +102,55 @@ In all cases this is set up for interface-file declarations: - for class decls we ignore the bindings - for instance decls likewise, plus the pragmas - for rule decls, we ignore HsRules + - for data decls, we ignore derivings *** See "THE NAMING STORY" in HsDecls **** \begin{code} -tyClDeclFVs :: RenamedTyClDecl -> NameSet -tyClDeclFVs (ForeignType {}) - = emptyFVs - -tyClDeclFVs (IfaceSig {tcdType = ty, tcdIdInfo = id_infos}) - = extractHsTyNames ty `plusFV` - plusFVs (map hsIdInfoFVs id_infos) - -tyClDeclFVs (TyData {tcdCtxt = context, tcdTyVars = tyvars, tcdCons = condecls, tcdDerivs = derivings}) - = delFVs (map hsTyVarName tyvars) $ - extractHsCtxtTyNames context `plusFV` - plusFVs (map conDeclFVs condecls) - -tyClDeclFVs (TySynonym {tcdTyVars = tyvars, tcdSynRhs = ty}) - = delFVs (map hsTyVarName tyvars) (extractHsTyNames ty) - -tyClDeclFVs (ClassDecl {tcdCtxt = context, tcdTyVars = tyvars, tcdFDs = fds, - tcdSigs = sigs, tcdMeths = maybe_meths}) - = delFVs (map hsTyVarName tyvars) $ - extractHsCtxtTyNames context `plusFV` - plusFVs (map extractFunDepNames fds) `plusFV` - hsSigsFVs sigs `plusFV` - dm_fvs - where - dm_fvs = case maybe_meths of - Nothing -> mkFVs [v | ClassOpSig _ (DefMeth v) _ _ <- sigs] - -- No method bindings, so this class decl comes from an interface file, - -- So we want to treat the default-method names as free (they should - -- be defined somewhere else). [In source code this is not so; the class - -- decl will bind whatever default-methods are necessary.] - Just _ -> emptyFVs -- Source code, so the default methods - -- are *bound* not *free* - ---------------- -hsSigsFVs sigs = plusFVs (map hsSigFVs sigs) +hsSigsFVs :: [LSig Name] -> FreeVars +hsSigsFVs sigs = plusFVs (map (hsSigFVs.unLoc) sigs) -hsSigFVs (Sig v ty _) = extractHsTyNames ty -hsSigFVs (SpecInstSig ty _) = extractHsTyNames ty -hsSigFVs (SpecSig v ty _) = extractHsTyNames ty -hsSigFVs (ClassOpSig _ _ ty _) = extractHsTyNames ty +hsSigFVs (TypeSig v ty) = extractHsTyNames ty +hsSigFVs (SpecInstSig ty) = extractHsTyNames ty +hsSigFVs (SpecSig v ty inl) = extractHsTyNames ty hsSigFVs other = emptyFVs ---------------- -instDeclFVs (InstDecl inst_ty _ _ maybe_dfun _) - = extractHsTyNames inst_ty `plusFV` - (case maybe_dfun of { Just n -> unitFV n; Nothing -> emptyFVs }) +conDeclFVs (L _ (ConDecl { con_qvars = tyvars, con_cxt = context, + con_details = details, con_res = res_ty})) + = delFVs (map hsLTyVarName tyvars) $ + extractHsCtxtTyNames context `plusFV` + conDetailsFVs details `plusFV` + conResTyFVs res_ty ----------------- -ruleDeclFVs (HsRule _ _ _ _ _ _) = emptyFVs -ruleDeclFVs (IfaceRule _ vars _ args rhs _) - = delFVs (map ufBinderName vars) $ - ufExprFVs rhs `plusFV` plusFVs (map ufExprFVs args) +conResTyFVs ResTyH98 = emptyFVs +conResTyFVs (ResTyGADT ty) = extractHsTyNames ty ----------------- -conDeclFVs (ConDecl _ _ tyvars context details _) - = delFVs (map hsTyVarName tyvars) $ - extractHsCtxtTyNames context `plusFV` - conDetailsFVs details - -conDetailsFVs (VanillaCon btys) = plusFVs (map bangTyFVs btys) +conDetailsFVs (PrefixCon btys) = plusFVs (map bangTyFVs btys) conDetailsFVs (InfixCon bty1 bty2) = bangTyFVs bty1 `plusFV` bangTyFVs bty2 conDetailsFVs (RecCon flds) = plusFVs [bangTyFVs bty | (_, bty) <- flds] bangTyFVs bty = extractHsTyNames (getBangType bty) - ----------------- -hsIdInfoFVs (HsUnfold _ unf) = ufExprFVs unf -hsIdInfoFVs (HsWorker n a) = unitFV n -hsIdInfoFVs other = emptyFVs - ----------------- -ufExprFVs (UfVar n) = unitFV n -ufExprFVs (UfLit l) = emptyFVs -ufExprFVs (UfLitLit l ty) = extractHsTyNames ty -ufExprFVs (UfFCall cc ty) = extractHsTyNames ty -ufExprFVs (UfType ty) = extractHsTyNames ty -ufExprFVs (UfTuple tc es) = hsTupConFVs tc `plusFV` plusFVs (map ufExprFVs es) -ufExprFVs (UfLam v e) = ufBndrFVs v (ufExprFVs e) -ufExprFVs (UfApp e1 e2) = ufExprFVs e1 `plusFV` ufExprFVs e2 -ufExprFVs (UfCase e n as) = ufExprFVs e `plusFV` delFV n (plusFVs (map ufAltFVs as)) -ufExprFVs (UfNote n e) = ufNoteFVs n `plusFV` ufExprFVs e -ufExprFVs (UfLet (UfNonRec b r) e) = ufExprFVs r `plusFV` ufBndrFVs b (ufExprFVs e) -ufExprFVs (UfLet (UfRec prs) e) = foldr ufBndrFVs - (foldr (plusFV . ufExprFVs . snd) (ufExprFVs e) prs) - (map fst prs) - -ufBndrFVs (UfValBinder n ty) fvs = extractHsTyNames ty `plusFV` delFV n fvs -ufBndrFVs (UfTyBinder n k) fvs = delFV n fvs - -ufAltFVs (con, vs, e) = ufConFVs con `plusFV` delFVs vs (ufExprFVs e) - -ufConFVs (UfDataAlt n) = unitFV n -ufConFVs (UfTupleAlt t) = hsTupConFVs t -ufConFVs (UfLitLitAlt _ ty) = extractHsTyNames ty -ufConFVs other = emptyFVs - -ufNoteFVs (UfCoerce ty) = extractHsTyNames ty -ufNoteFVs note = emptyFVs - -hsTupConFVs (HsTupCon n _ _) = unitFV n \end{code} + %************************************************************************ %* * \subsection{A few functions on generic defintions %* * %************************************************************************ -These functions on generics are defined over RenamedMatches, which is +These functions on generics are defined over Matches Name, which is why they are here and not in HsMatches. \begin{code} -maybeGenericMatch :: RenamedMatch -> Maybe (RenamedHsType, RenamedMatch) +maybeGenericMatch :: LMatch Name -> Maybe (HsType Name, LMatch Name) -- Tells whether a Match is for a generic definition -- and extract the type from a generic match and put it at the front -maybeGenericMatch (Match tvs (TypePatIn ty : pats) sig_ty grhss) - = Just (ty, Match tvs pats sig_ty grhss) +maybeGenericMatch (L loc (Match (L _ (TypePat (L _ ty)) : pats) sig_ty grhss)) + = Just (ty, L loc (Match pats sig_ty grhss)) maybeGenericMatch other_match = Nothing \end{code}