2 % (c) The AQUA Project, Glasgow University, 1996
4 \section[RnHsSyn]{Specialisations of the @HsSyn@ syntax for the renamer}
7 #include "HsVersions.h"
15 import Id ( GenId, Id(..) )
16 import Name ( isLocalName, nameUnique, Name, RdrName(..){-ToDo: rm ..-},
17 mkLocalName{-ToDo:rm-}
19 import Outputable ( Outputable(..){-instance * []-} )
20 import PprStyle ( PprStyle(..) )
21 import PprType ( GenType, GenTyVar, TyCon )
23 import TyCon ( TyCon )
24 import TyVar ( GenTyVar )
25 import Unique ( mkAlphaTyVarUnique, Unique )
26 import Util ( panic, pprPanic, pprTrace{-ToDo:rm-} )
33 | RnName Name -- functions/binders/tyvars
34 | RnSyn Name -- type synonym
35 | RnData Name [Name] -- data type (with constrs)
36 | RnConstr Name Name -- constructor (with data type)
37 | RnClass Name [Name] -- class (with class ops)
38 | RnClassOp Name Name -- class op (with class)
39 | RnImplicit Name -- implicitly imported
40 | RnImplicitTyCon Name -- implicitly imported
41 | RnImplicitClass Name -- implicitly imported
42 | RnUnbound RdrName -- place holder
45 mkRnImplicit = RnImplicit
46 mkRnImplicitTyCon = RnImplicitTyCon
47 mkRnImplicitClass = RnImplicitClass
48 mkRnUnbound = RnUnbound
50 isRnWired (WiredInId _) = True
51 isRnWired (WiredInTyCon _) = True
54 isRnLocal (RnName n) = isLocalName n
58 isRnTyCon (WiredInTyCon _) = True
59 isRnTyCon (RnSyn _) = True
60 isRnTyCon (RnData _ _) = True
61 isRnTyCon (RnImplicitTyCon _) = True
64 isRnClass (RnClass _ _) = True
65 isRnClass (RnImplicitClass _) = True
68 -- a common need: isRnTyCon || isRnClass:
69 isRnTyConOrClass (WiredInTyCon _) = True
70 isRnTyConOrClass (RnSyn _) = True
71 isRnTyConOrClass (RnData _ _) = True
72 isRnTyConOrClass (RnImplicitTyCon _) = True
73 isRnTyConOrClass (RnClass _ _) = True
74 isRnTyConOrClass (RnImplicitClass _) = True
75 isRnTyConOrClass _ = False
77 isRnClassOp cls (RnClassOp _ op_cls) = eqUniqsNamed cls op_cls
78 isRnClassOp cls (RnImplicit _) = True -- ho hummm ...
79 isRnClassOp cls _ = False
81 isRnImplicit (RnImplicit _) = True
82 isRnImplicit (RnImplicitTyCon _) = True
83 isRnImplicit (RnImplicitClass _) = True
84 isRnImplicit _ = False
86 isRnUnbound (RnUnbound _) = True
89 -- Very general NamedThing comparison, used when comparing
90 -- Uniquable things with different types
92 eqUniqsNamed n1 n2 = uniqueOf n1 == uniqueOf n2
93 cmpUniqsNamed n1 n2 = uniqueOf n1 `cmp` uniqueOf n2
95 instance Eq RnName where
96 a == b = eqUniqsNamed a b
98 instance Ord3 RnName where
99 a `cmp` b = cmpUniqsNamed a b
101 instance Uniquable RnName where
102 uniqueOf = nameUnique . getName
104 instance NamedThing RnName where
105 getName (WiredInId id) = getName id
106 getName (WiredInTyCon tc) = getName tc
107 getName (RnName n) = n
108 getName (RnSyn n) = n
109 getName (RnData n _) = n
110 getName (RnConstr n _) = n
111 getName (RnClass n _) = n
112 getName (RnClassOp n _) = n
113 getName (RnImplicit n) = n
114 getName (RnImplicitTyCon n) = n
115 getName (RnImplicitClass n) = n
116 getName (RnUnbound occ) = pprTrace "getRnName:RnUnbound: " (ppr PprDebug occ)
118 Unqual n -> mkLocalName bottom n bottom2
119 Qual m n -> mkLocalName bottom n bottom2)
120 where bottom = mkAlphaTyVarUnique 0 -- anything; just something that will print
121 bottom2 = panic "getRnName: srcloc"
123 instance Outputable RnName where
125 ppr sty@PprShowAll (RnData n cs) = ppBesides [ppr sty n, ppStr "{-", ppr sty cs, ppStr "-}"]
126 ppr sty@PprShowAll (RnConstr n d) = ppBesides [ppr sty n, ppStr "{-", ppr sty d, ppStr "-}"]
127 ppr sty@PprShowAll (RnClass n ops) = ppBesides [ppr sty n, ppStr "{-", ppr sty ops, ppStr "-}"]
128 ppr sty@PprShowAll (RnClassOp n c) = ppBesides [ppr sty n, ppStr "{-", ppr sty c, ppStr "-}"]
130 ppr sty (WiredInId id) = ppr sty id
131 ppr sty (WiredInTyCon tycon)= ppr sty tycon
132 ppr sty (RnUnbound occ) = ppBeside (ppr sty occ) (ppPStr SLIT("{-UNBOUND-}"))
133 ppr sty rn_name = ppr sty (getName rn_name)
137 type RenamedArithSeqInfo = ArithSeqInfo Fake Fake RnName RenamedPat
138 type RenamedBind = Bind Fake Fake RnName RenamedPat
139 type RenamedClassDecl = ClassDecl Fake Fake RnName RenamedPat
140 type RenamedClassOpSig = Sig RnName
141 type RenamedConDecl = ConDecl RnName
142 type RenamedContext = Context RnName
143 type RenamedSpecDataSig = SpecDataSig RnName
144 type RenamedDefaultDecl = DefaultDecl RnName
145 type RenamedFixityDecl = FixityDecl RnName
146 type RenamedGRHS = GRHS Fake Fake RnName RenamedPat
147 type RenamedGRHSsAndBinds = GRHSsAndBinds Fake Fake RnName RenamedPat
148 type RenamedHsBinds = HsBinds Fake Fake RnName RenamedPat
149 type RenamedHsExpr = HsExpr Fake Fake RnName RenamedPat
150 type RenamedHsModule = HsModule Fake Fake RnName RenamedPat
151 type RenamedInstDecl = InstDecl Fake Fake RnName RenamedPat
152 type RenamedMatch = Match Fake Fake RnName RenamedPat
153 type RenamedMonoBinds = MonoBinds Fake Fake RnName RenamedPat
154 type RenamedMonoType = MonoType RnName
155 type RenamedPat = InPat RnName
156 type RenamedPolyType = PolyType RnName
157 type RenamedRecordBinds = HsRecordBinds Fake Fake RnName RenamedPat
158 type RenamedQual = Qual Fake Fake RnName RenamedPat
159 type RenamedSig = Sig RnName
160 type RenamedSpecInstSig = SpecInstSig RnName
161 type RenamedStmt = Stmt Fake Fake RnName RenamedPat
162 type RenamedTyDecl = TyDecl RnName
164 type RenamedClassOpPragmas = ClassOpPragmas RnName
165 type RenamedClassPragmas = ClassPragmas RnName
166 type RenamedDataPragmas = DataPragmas RnName
167 type RenamedGenPragmas = GenPragmas RnName
168 type RenamedInstancePragmas = InstancePragmas RnName
172 collectQualBinders :: [RenamedQual] -> [RnName]
174 collectQualBinders quals
175 = concat (map collect quals)
177 collect (GeneratorQual pat _) = collectPatBinders pat
178 collect (FilterQual expr) = []
179 collect (LetQual binds) = collectTopLevelBinders binds