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 ( isDataCon, 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] [Name] -- data type (with constrs and fields)
36 | RnConstr Name Name -- constructor (with data type)
37 | RnField Name Name -- field (with data type)
38 | RnClass Name [Name] -- class (with class ops)
39 | RnClassOp Name Name -- class op (with class)
40 | RnImplicit Name -- implicitly imported
41 | RnImplicitTyCon Name -- implicitly imported
42 | RnImplicitClass Name -- implicitly imported
43 | RnUnbound RdrName -- place holder
46 mkRnImplicit = RnImplicit
47 mkRnImplicitTyCon = RnImplicitTyCon
48 mkRnImplicitClass = RnImplicitClass
49 mkRnUnbound = RnUnbound
51 isRnWired (WiredInId _) = True
52 isRnWired (WiredInTyCon _) = True
55 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 isRnConstr (RnConstr _ _) = True
78 isRnConstr (WiredInId id) = isDataCon id
81 isRnField (RnField _ _) = True
84 isRnClassOp cls (RnClassOp _ op_cls) = eqUniqsNamed cls op_cls
85 isRnClassOp cls _ = False
87 isRnImplicit (RnImplicit _) = True
88 isRnImplicit (RnImplicitTyCon _) = True
89 isRnImplicit (RnImplicitClass _) = True
90 isRnImplicit _ = False
92 isRnUnbound (RnUnbound _) = True
95 -- Very general NamedThing comparison, used when comparing
96 -- Uniquable things with different types
98 eqUniqsNamed n1 n2 = uniqueOf n1 == uniqueOf n2
99 cmpUniqsNamed n1 n2 = uniqueOf n1 `cmp` uniqueOf n2
101 instance Eq RnName where
102 a == b = eqUniqsNamed a b
104 instance Ord3 RnName where
105 a `cmp` b = cmpUniqsNamed a b
107 instance Uniquable RnName where
108 uniqueOf = nameUnique . getName
110 instance NamedThing RnName where
111 getName (WiredInId id) = getName id
112 getName (WiredInTyCon tc) = getName tc
113 getName (RnName n) = n
114 getName (RnSyn n) = n
115 getName (RnData n _ _) = n
116 getName (RnConstr n _) = n
117 getName (RnField n _) = n
118 getName (RnClass n _) = n
119 getName (RnClassOp n _) = n
120 getName (RnImplicit n) = n
121 getName (RnImplicitTyCon n) = n
122 getName (RnImplicitClass n) = n
123 getName (RnUnbound occ) = pprTrace "getRnName:RnUnbound: " (ppr PprDebug occ)
125 Unqual n -> mkLocalName bottom n False bottom2
126 Qual m n -> mkLocalName bottom n False bottom2)
127 where bottom = mkAlphaTyVarUnique 0 -- anything; just something that will print
128 bottom2 = panic "getRnName: srcloc"
130 instance Outputable RnName where
132 ppr sty@PprShowAll (RnData n cs fs) = ppBesides [ppr sty n, ppStr "{-", ppr sty cs, ppr sty fs, ppStr "-}"]
133 ppr sty@PprShowAll (RnConstr n d) = ppBesides [ppr sty n, ppStr "{-", ppr sty d, ppStr "-}"]
134 ppr sty@PprShowAll (RnField n d) = ppBesides [ppr sty n, ppStr "{-", ppr sty d, ppStr "-}"]
135 ppr sty@PprShowAll (RnClass n ops) = ppBesides [ppr sty n, ppStr "{-", ppr sty ops, ppStr "-}"]
136 ppr sty@PprShowAll (RnClassOp n c) = ppBesides [ppr sty n, ppStr "{-", ppr sty c, ppStr "-}"]
138 ppr sty (WiredInId id) = ppr sty id
139 ppr sty (WiredInTyCon tycon)= ppr sty tycon
140 ppr sty (RnUnbound occ) = ppBeside (ppr sty occ) (ppPStr SLIT("{-UNBOUND-}"))
141 ppr sty rn_name = ppr sty (getName rn_name)
145 type RenamedArithSeqInfo = ArithSeqInfo Fake Fake RnName RenamedPat
146 type RenamedBind = Bind Fake Fake RnName RenamedPat
147 type RenamedClassDecl = ClassDecl Fake Fake RnName RenamedPat
148 type RenamedClassOpSig = Sig RnName
149 type RenamedConDecl = ConDecl RnName
150 type RenamedContext = Context RnName
151 type RenamedSpecDataSig = SpecDataSig RnName
152 type RenamedDefaultDecl = DefaultDecl RnName
153 type RenamedFixityDecl = FixityDecl RnName
154 type RenamedGRHS = GRHS Fake Fake RnName RenamedPat
155 type RenamedGRHSsAndBinds = GRHSsAndBinds Fake Fake RnName RenamedPat
156 type RenamedHsBinds = HsBinds Fake Fake RnName RenamedPat
157 type RenamedHsExpr = HsExpr Fake Fake RnName RenamedPat
158 type RenamedHsModule = HsModule Fake Fake RnName RenamedPat
159 type RenamedInstDecl = InstDecl Fake Fake RnName RenamedPat
160 type RenamedMatch = Match Fake Fake RnName RenamedPat
161 type RenamedMonoBinds = MonoBinds Fake Fake RnName RenamedPat
162 type RenamedMonoType = MonoType RnName
163 type RenamedPat = InPat RnName
164 type RenamedPolyType = PolyType RnName
165 type RenamedRecordBinds = HsRecordBinds Fake Fake RnName RenamedPat
166 type RenamedQual = Qual Fake Fake RnName RenamedPat
167 type RenamedSig = Sig RnName
168 type RenamedSpecInstSig = SpecInstSig RnName
169 type RenamedStmt = Stmt Fake Fake RnName RenamedPat
170 type RenamedTyDecl = TyDecl RnName
172 type RenamedClassOpPragmas = ClassOpPragmas RnName
173 type RenamedClassPragmas = ClassPragmas RnName
174 type RenamedDataPragmas = DataPragmas RnName
175 type RenamedGenPragmas = GenPragmas RnName
176 type RenamedInstancePragmas = InstancePragmas RnName
180 collectQualBinders :: [RenamedQual] -> [RnName]
182 collectQualBinders quals
183 = concat (map collect quals)
185 collect (GeneratorQual pat _) = collectPatBinders pat
186 collect (FilterQual expr) = []
187 collect (LetQual binds) = collectTopLevelBinders binds
189 fixDeclName :: FixityDecl name -> name
190 fixDeclName (InfixL name i) = name
191 fixDeclName (InfixR name i) = name
192 fixDeclName (InfixN name i) = name