2 % (c) The AQUA Project, Glasgow University, 1996-1998
4 \section[RnHsSyn]{Specialisations of the @HsSyn@ syntax for the renamer}
9 #include "HsVersions.h"
12 import HsPragmas ( InstancePragmas, GenPragmas, DataPragmas, ClassPragmas, ClassOpPragmas )
14 import TysWiredIn ( tupleTyCon, unboxedTupleTyCon,
15 listTyCon, charTyCon )
16 import Name ( Name, getName )
24 type RenamedArithSeqInfo = ArithSeqInfo Name RenamedPat
25 type RenamedClassOpSig = Sig Name
26 type RenamedConDecl = ConDecl Name
27 type RenamedContext = HsContext Name
28 type RenamedHsDecl = HsDecl Name RenamedPat
29 type RenamedRuleDecl = RuleDecl Name RenamedPat
30 type RenamedTyClDecl = TyClDecl Name RenamedPat
31 type RenamedSpecDataSig = SpecDataSig Name
32 type RenamedDefaultDecl = DefaultDecl Name
33 type RenamedForeignDecl = ForeignDecl Name
34 type RenamedGRHS = GRHS Name RenamedPat
35 type RenamedGRHSs = GRHSs Name RenamedPat
36 type RenamedHsBinds = HsBinds Name RenamedPat
37 type RenamedHsExpr = HsExpr Name RenamedPat
38 type RenamedHsModule = HsModule Name RenamedPat
39 type RenamedInstDecl = InstDecl Name RenamedPat
40 type RenamedMatch = Match Name RenamedPat
41 type RenamedMonoBinds = MonoBinds Name RenamedPat
42 type RenamedPat = InPat Name
43 type RenamedHsType = HsType Name
44 type RenamedRecordBinds = HsRecordBinds Name RenamedPat
45 type RenamedSig = Sig Name
46 type RenamedStmt = Stmt Name RenamedPat
47 type RenamedFixitySig = FixitySig Name
48 type RenamedDeprecation = Deprecation Name
50 type RenamedClassOpPragmas = ClassOpPragmas Name
51 type RenamedClassPragmas = ClassPragmas Name
52 type RenamedDataPragmas = DataPragmas Name
53 type RenamedGenPragmas = GenPragmas Name
54 type RenamedInstancePragmas = InstancePragmas Name
57 %************************************************************************
59 \subsection{Free variables}
61 %************************************************************************
63 These free-variable finders returns tycons and classes too.
66 charTyCon_name, listTyCon_name :: Name
67 charTyCon_name = getName charTyCon
68 listTyCon_name = getName listTyCon
70 tupleTyCon_name :: Bool -> Int -> Name
71 tupleTyCon_name True n = getName (tupleTyCon n)
72 tupleTyCon_name False n = getName (unboxedTupleTyCon n)
74 extractHsTyNames :: RenamedHsType -> NameSet
78 get (MonoTyApp ty1 ty2) = get ty1 `unionNameSets` get ty2
79 get (MonoListTy ty) = unitNameSet listTyCon_name
80 `unionNameSets` get ty
81 get (MonoTupleTy tys boxed) = unitNameSet (tupleTyCon_name boxed (length tys))
82 `unionNameSets` extractHsTyNames_s tys
83 get (MonoFunTy ty1 ty2) = get ty1 `unionNameSets` get ty2
84 get (MonoDictTy cls tys) = unitNameSet cls `unionNameSets` extractHsTyNames_s tys
85 get (MonoUsgForAllTy uv ty) = get ty
86 get (MonoUsgTy u ty) = get ty
87 get (MonoTyVar tv) = unitNameSet tv
88 get (HsForAllTy (Just tvs)
89 ctxt ty) = (extractHsCtxtTyNames ctxt `unionNameSets` get ty)
91 mkNameSet (map getTyVarName tvs)
92 get ty@(HsForAllTy Nothing _ _) = pprPanic "extractHsTyNames" (ppr ty)
94 extractHsTyNames_s :: [RenamedHsType] -> NameSet
95 extractHsTyNames_s tys = foldr (unionNameSets . extractHsTyNames) emptyNameSet tys
97 extractHsCtxtTyNames :: RenamedContext -> NameSet
98 extractHsCtxtTyNames ctxt = foldr (unionNameSets . extractHsPredTyNames) emptyNameSet ctxt
100 -- You don't import or export implicit parameters, so don't mention
102 extractHsPredTyNames (HsPClass cls tys)
103 = unitNameSet cls `unionNameSets` extractHsTyNames_s tys
104 extractHsPredTyNames (HsPIParam n ty)
105 = extractHsTyNames ty