#include "HsVersions.h"
import HsSyn
-import TysWiredIn ( tupleTyCon, listTyCon, charTyCon )
+import Class ( FunDep )
+import TysWiredIn ( tupleTyCon, listTyCon, parrTyCon, charTyCon )
import Name ( Name, getName, isTyVarName )
import NameSet
import BasicTypes ( Boxity )
\begin{code}
-type RenamedArithSeqInfo = ArithSeqInfo Name RenamedPat
+type RenamedHsDecl = HsDecl Name
+type RenamedArithSeqInfo = ArithSeqInfo Name
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 RenamedRuleDecl = RuleDecl Name
+type RenamedTyClDecl = TyClDecl Name
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 RenamedMatch = Match Name RenamedPat
-type RenamedMonoBinds = MonoBinds Name RenamedPat
+type RenamedGRHS = GRHS Name
+type RenamedGRHSs = GRHSs Name
+type RenamedHsBinds = HsBinds Name
+type RenamedHsExpr = HsExpr Name
+type RenamedInstDecl = InstDecl Name
+type RenamedMatchContext = HsMatchContext Name
+type RenamedMatch = Match Name
+type RenamedMonoBinds = MonoBinds Name
type RenamedPat = InPat Name
type RenamedHsType = HsType Name
type RenamedHsPred = HsPred Name
-type RenamedRecordBinds = HsRecordBinds Name RenamedPat
+type RenamedRecordBinds = HsRecordBinds Name
type RenamedSig = Sig Name
-type RenamedStmt = Stmt Name RenamedPat
+type RenamedStmt = Stmt Name
type RenamedFixitySig = FixitySig Name
type RenamedDeprecation = DeprecDecl Name
-type RenamedHsOverLit = HsOverLit Name
-type RenamedIfaceSig = IfaceSig Name
+type RenamedHsCmd = HsCmd Name
+type RenamedHsCmdTop = HsCmdTop Name
\end{code}
%************************************************************************
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 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 (HsAppTy ty1 ty2) = get ty1 `unionNameSets` get ty2
get (HsListTy ty) = unitNameSet listTyCon_name `unionNameSets` get ty
- get (HsTupleTy (HsTupCon n _) tys) = unitNameSet n
- `unionNameSets` extractHsTyNames_s tys
+ get (HsPArrTy ty) = unitNameSet parrTyCon_name `unionNameSets` get ty
+ get (HsTupleTy con tys) = extractHsTyNames_s tys
get (HsFunTy ty1 ty2) = get ty1 `unionNameSets` get ty2
get (HsPredTy p) = extractHsPredTyNames p
- get (HsUsgForAllTy uv ty) = get ty
- get (HsUsgTy u ty) = get ty
- get (HsOpTy ty1 tycon ty2) = get ty1 `unionNameSets` get ty2 `unionNameSets`
- unitNameSet tycon
+ get (HsOpTy ty1 op ty2) = get ty1 `unionNameSets` get ty2 `unionNameSets` unitNameSet op
+ get (HsParTy ty) = get ty
get (HsNumTy n) = emptyNameSet
get (HsTyVar tv) = unitNameSet tv
- get (HsForAllTy (Just tvs)
+ get (HsKindSig ty k) = get ty
+ get (HsForAllTy _ tvs
ctxt ty) = (extractHsCtxtTyNames ctxt `unionNameSets` get ty)
`minusNameSet`
mkNameSet (hsTyVarNames tvs)
- get ty@(HsForAllTy Nothing _ _) = pprPanic "extractHsTyNames" (ppr ty)
extractHsTyNames_s :: [RenamedHsType] -> NameSet
extractHsTyNames_s tys = foldr (unionNameSets . extractHsTyNames) emptyNameSet tys
-- You don't import or export implicit parameters,
-- so don't mention the IP names
-extractHsPredTyNames (HsPClass cls tys)
+extractHsPredTyNames (HsClassP cls tys)
= unitNameSet cls `unionNameSets` extractHsTyNames_s tys
-extractHsPredTyNames (HsPIParam n ty)
+extractHsPredTyNames (HsIParam 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
+ - for data decls, we ignore derivings
+
+ *** See "THE NAMING STORY" in HsDecls ****
+
+\begin{code}
+----------------
+hsSigsFVs sigs = plusFVs (map hsSigFVs sigs)
+
+hsSigFVs (Sig v ty _) = extractHsTyNames ty
+hsSigFVs (SpecInstSig ty _) = extractHsTyNames ty
+hsSigFVs (SpecSig v ty _) = extractHsTyNames ty
+hsSigFVs other = emptyFVs
+
+----------------
+conDeclFVs (ConDecl _ tyvars context details _)
+ = delFVs (map hsTyVarName tyvars) $
+ extractHsCtxtTyNames context `plusFV`
+ conDetailsFVs details
+
+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)
+\end{code}
+
+
+%************************************************************************
+%* *
\subsection{A few functions on generic defintions
%* *
%************************************************************************
-- 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 (Match (TypePat ty : pats) sig_ty grhss)
+ = Just (ty, Match pats sig_ty grhss)
maybeGenericMatch other_match = Nothing
\end{code}
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