#include "HsVersions.h"
import HsSyn
-import HsPragmas ( InstancePragmas, GenPragmas, DataPragmas, ClassPragmas, ClassOpPragmas )
-
-import TysWiredIn ( tupleTyCon, unboxedTupleTyCon,
- listTyCon, charTyCon )
-import Name ( Name, getName )
+import HsCore
+import Class ( FunDep )
+import TysWiredIn ( tupleTyCon, listTyCon, charTyCon )
+import Name ( Name, getName, isTyVarName )
import NameSet
-import Util
+import BasicTypes ( Boxity )
+import Maybes ( orElse )
import Outputable
\end{code}
type RenamedArithSeqInfo = ArithSeqInfo Name RenamedPat
type RenamedClassOpSig = Sig Name
type RenamedConDecl = ConDecl Name
-type RenamedContext = Context Name
+type RenamedContext = HsContext Name
type RenamedHsDecl = HsDecl Name RenamedPat
type RenamedRuleDecl = RuleDecl Name RenamedPat
type RenamedTyClDecl = TyClDecl Name RenamedPat
-type RenamedSpecDataSig = SpecDataSig Name
type RenamedDefaultDecl = DefaultDecl Name
type RenamedForeignDecl = ForeignDecl Name
type RenamedGRHS = GRHS 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 RenamedClassOpPragmas = ClassOpPragmas Name
-type RenamedClassPragmas = ClassPragmas Name
-type RenamedDataPragmas = DataPragmas Name
-type RenamedGenPragmas = GenPragmas Name
-type RenamedInstancePragmas = InstancePragmas Name
+type RenamedDeprecation = DeprecDecl Name
+type RenamedHsOverLit = HsOverLit Name
\end{code}
%************************************************************************
charTyCon_name = getName charTyCon
listTyCon_name = getName listTyCon
-tupleTyCon_name :: Bool -> Int -> Name
-tupleTyCon_name True n = getName (tupleTyCon n)
-tupleTyCon_name False n = getName (unboxedTupleTyCon n)
+tupleTyCon_name :: Boxity -> Int -> Name
+tupleTyCon_name boxity n = getName (tupleTyCon boxity n)
+
+extractHsTyVars :: RenamedHsType -> NameSet
+extractHsTyVars x = filterNameSet isTyVarName (extractHsTyNames x)
+
+extractFunDepNames :: FunDep Name -> NameSet
+extractFunDepNames (ns1, ns2) = mkNameSet ns1 `unionNameSets` mkNameSet ns2
extractHsTyNames :: RenamedHsType -> NameSet
extractHsTyNames ty
= get ty
where
- get (MonoTyApp ty1 ty2) = get ty1 `unionNameSets` get ty2
- get (MonoListTy ty) = unitNameSet listTyCon_name
- `unionNameSets` get ty
- get (MonoTupleTy tys boxed) = unitNameSet (tupleTyCon_name boxed (length tys))
- `unionNameSets` extractHsTyNames_s tys
- get (MonoFunTy ty1 ty2) = get ty1 `unionNameSets` get ty2
- get (MonoDictTy cls tys) = unitNameSet cls `unionNameSets` extractHsTyNames_s tys
- get (MonoUsgForAllTy uv ty) = get ty
- get (MonoUsgTy u ty) = get ty
- get (MonoTyVar tv) = unitNameSet tv
+ 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
+ get (HsPredTy p) = extractHsPredTyNames p
+ get (HsOpTy ty1 tycon ty2) = get ty1 `unionNameSets` get ty2 `unionNameSets`
+ unitNameSet tycon
+ get (HsNumTy n) = emptyNameSet
+ get (HsTyVar tv) = unitNameSet tv
get (HsForAllTy (Just tvs)
- ctxt ty) = (extractHsCtxtTyNames ctxt `unionNameSets` get ty)
+ ctxt ty) = (extractHsCtxtTyNames ctxt `unionNameSets` get ty)
`minusNameSet`
- mkNameSet (map getTyVarName tvs)
+ mkNameSet (hsTyVarNames tvs)
get ty@(HsForAllTy Nothing _ _) = pprPanic "extractHsTyNames" (ppr ty)
extractHsTyNames_s :: [RenamedHsType] -> NameSet
extractHsTyNames_s tys = foldr (unionNameSets . extractHsTyNames) emptyNameSet tys
extractHsCtxtTyNames :: RenamedContext -> NameSet
-extractHsCtxtTyNames ctxt = foldr (unionNameSets . get) emptyNameSet ctxt
- where
- get (cls, tys) = unitNameSet cls `unionNameSets` extractHsTyNames_s tys
+extractHsCtxtTyNames ctxt = foldr (unionNameSets . extractHsPredTyNames) emptyNameSet ctxt
+
+-- You don't import or export implicit parameters,
+-- so don't mention the IP names
+extractHsPredTyNames (HsPClass cls tys)
+ = unitNameSet cls `unionNameSets` extractHsTyNames_s tys
+extractHsPredTyNames (HsPIParam n ty)
+ = extractHsTyNames ty
\end{code}
+
+%************************************************************************
+%* *
+\subsection{Free variables of declarations}
+%* *
+%************************************************************************
+
+Return the Names that must be in scope if we are to use this declaration.
+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
+
+\begin{code}
+tyClDeclFVs :: RenamedTyClDecl -> NameSet
+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) `plusFV`
+ mkNameSet (derivings `orElse` [])
+
+tyClDeclFVs (TySynonym {tcdTyVars = tyvars, tcdSynRhs = ty})
+ = delFVs (map hsTyVarName tyvars) (extractHsTyNames ty)
+
+tyClDeclFVs (ClassDecl {tcdCtxt = context, tcdTyVars = tyvars, tcdFDs = fds, tcdSigs = sigs})
+ = delFVs (map hsTyVarName tyvars) $
+ extractHsCtxtTyNames context `plusFV`
+ plusFVs (map extractFunDepNames fds) `plusFV`
+ hsSigsFVs sigs
+
+----------------
+hsSigsFVs sigs = plusFVs (map hsSigFVs sigs)
+
+hsSigFVs (Sig v ty _) = extractHsTyNames ty
+hsSigFVs (SpecInstSig ty _) = extractHsTyNames ty
+hsSigFVs (SpecSig v ty _) = extractHsTyNames ty
+hsSigFVs (ClassOpSig _ _ ty _) = 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 })
+
+----------------
+ruleDeclFVs (HsRule _ _ _ _ _ _) = emptyFVs
+ruleDeclFVs (IfaceRule _ vars _ args rhs _)
+ = delFVs (map ufBinderName vars) $
+ ufExprFVs rhs `plusFV` plusFVs (map ufExprFVs args)
+
+----------------
+conDeclFVs (ConDecl _ _ tyvars context details _)
+ = delFVs (map hsTyVarName tyvars) $
+ extractHsCtxtTyNames context `plusFV`
+ conDetailsFVs details
+
+conDetailsFVs (VanillaCon 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) = unitFV n
+hsIdInfoFVs other = emptyFVs
+
+----------------
+ufExprFVs (UfVar n) = unitFV n
+ufExprFVs (UfLit l) = emptyFVs
+ufExprFVs (UfLitLit l ty) = extractHsTyNames ty
+ufExprFVs (UfCCall 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
+why they are here and not in HsMatches.
+
+\begin{code}
+maybeGenericMatch :: RenamedMatch -> Maybe (RenamedHsType, RenamedMatch)
+ -- 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 other_match = Nothing
+\end{code}