2 % (c) The University of Glasgow 2001
6 module MkExternalCore (
10 #include "HsVersions.h"
12 import qualified ExternalCore as C
29 import PprExternalCore
34 emitExternalCore :: DynFlags -> ModIface -> ModDetails -> IO ()
35 emitExternalCore dflags iface details
36 | opt_EmitExternalCore
37 = (do handle <- openFile corename WriteMode
38 hPutStr handle (show (mkExternalCore iface details))
40 `catch` (\err -> pprPanic "Failed to open or write external core output file"
42 where corename = extCoreName dflags
43 emitExternalCore _ _ _
48 mkExternalCore :: ModIface -> ModDetails -> C.Module
49 mkExternalCore (ModIface {mi_module=mi_module,mi_exports=mi_exports})
50 (ModDetails {md_types=md_types,md_binds=md_binds}) =
51 C.Module mname tdefs vdefs
53 mname = make_mid mi_module
54 tdefs = foldr collect_tdefs [] (typeEnvTyCons md_types)
55 vdefs = map make_vdef md_binds
57 collect_tdefs :: TyCon -> [C.Tdef] -> [C.Tdef]
58 collect_tdefs tcon tdefs
59 | isAlgTyCon tcon = tdef: tdefs
61 tdef | isNewTyCon tcon =
62 C.Newtype (make_con_qid (tyConName tcon)) (map make_tbind tyvars) repclause
64 C.Data (make_con_qid (tyConName tcon)) (map make_tbind tyvars) (map make_cdef (tyConDataCons tcon))
65 where repclause | isRecursiveTyCon tcon = Nothing
66 | otherwise = Just (make_ty rep)
67 where (_, rep) = newTyConRep tcon
68 tyvars = tyConTyVars tcon
70 collect_tdefs _ tdefs = tdefs
73 make_cdef :: DataCon -> C.Cdef
74 make_cdef dcon = C.Constr dcon_name existentials tys
76 dcon_name = make_con_qid (dataConName dcon)
77 existentials = map make_tbind ex_tyvars
78 ex_tyvars = dataConExistentialTyVars dcon
79 tys = map make_ty (dataConRepArgTys dcon)
81 make_tbind :: TyVar -> C.Tbind
82 make_tbind tv = (make_var_id (tyVarName tv), make_kind (tyVarKind tv))
84 make_vbind :: Var -> C.Vbind
85 make_vbind v = (make_var_id (Var.varName v), make_ty (varType v))
87 make_vdef :: CoreBind -> C.Vdefg
90 NonRec v e -> C.Nonrec (f (v,e))
91 Rec ves -> C.Rec (map f ves)
92 where f (v,e) = (make_var_qid (Var.varName v), make_ty (varType v),make_exp e)
94 make_exp :: CoreExpr -> C.Exp
96 case globalIdDetails v of
97 -- a DataConId represents the Id of a worker, which is a varName. -- sof 4/02
98 -- DataConId _ -> C.Dcon (make_con_qid (Var.varName v))
99 FCallId (CCall (CCallSpec (StaticTarget nm) _ _)) -> C.External (unpackFS nm) (make_ty (varType v))
100 FCallId _ -> error "MkExternalCore died: can't handle non-static-C foreign call"
101 _ -> C.Var (make_var_qid (Var.varName v))
102 make_exp (Lit (l@(MachLabel s))) = C.External (unpackFS s) (make_ty (literalType l))
103 make_exp (Lit l) = C.Lit (make_lit l)
104 make_exp (App e (Type t)) = C.Appt (make_exp e) (make_ty t)
105 make_exp (App e1 e2) = C.App (make_exp e1) (make_exp e2)
106 make_exp (Lam v e) | isTyVar v = C.Lam (C.Tb (make_tbind v)) (make_exp e)
107 make_exp (Lam v e) | otherwise = C.Lam (C.Vb (make_vbind v)) (make_exp e)
108 make_exp (Let b e) = C.Let (make_vdef b) (make_exp e)
109 make_exp (Case e v alts) = C.Case (make_exp e) (make_vbind v) (map make_alt alts)
110 make_exp (Note (SCC cc) e) = C.Note "SCC" (make_exp e) -- temporary
111 make_exp (Note (Coerce t_to t_from) e) = C.Coerce (make_ty t_to) (make_exp e)
112 make_exp (Note InlineCall e) = C.Note "InlineCall" (make_exp e)
113 make_exp (Note InlineMe e) = C.Note "InlineMe" (make_exp e)
114 make_exp _ = error "MkExternalCore died: make_exp"
116 make_alt :: CoreAlt -> C.Alt
117 make_alt (DataAlt dcon, vs, e) =
118 C.Acon (make_con_qid (dataConName dcon))
122 where (tbs,vbs) = span isTyVar vs
123 make_alt (LitAlt l,_,e) = C.Alit (make_lit l) (make_exp e)
124 make_alt (DEFAULT,[],e) = C.Adefault (make_exp e)
126 make_lit :: Literal -> C.Lit
129 MachChar i | i <= 0xff -> C.Lchar (chr i) t
130 MachChar i | otherwise -> C.Lint (toEnum i) t
131 MachStr s -> C.Lstring (unpackFS s) t
132 MachAddr i -> C.Lint i t
133 MachInt i -> C.Lint i t
134 MachInt64 i -> C.Lint i t
135 MachWord i -> C.Lint i t
136 MachWord64 i -> C.Lint i t
137 MachFloat r -> C.Lrational r t
138 MachDouble r -> C.Lrational r t
139 _ -> error "MkExternalCore died: make_lit"
141 t = make_ty (literalType l)
143 make_ty :: Type -> C.Ty
144 make_ty (TyVarTy tv) = C.Tvar (make_var_id (tyVarName tv))
145 make_ty (AppTy t1 t2) = C.Tapp (make_ty t1) (make_ty t2)
146 make_ty (TyConApp tc ts) = foldl C.Tapp (C.Tcon (make_con_qid (tyConName tc))) (map make_ty ts)
147 make_ty (FunTy t1 t2) = make_ty (TyConApp funTyCon [t1,t2])
148 make_ty (ForAllTy tv t) = C.Tforall (make_tbind tv) (make_ty t)
149 make_ty (SourceTy p) = make_ty (sourceTypeRep p)
150 make_ty (NoteTy _ t) = make_ty t
153 make_kind :: Kind -> C.Kind
154 make_kind (FunTy k1 k2) = C.Karrow (make_kind k1) (make_kind k2)
155 make_kind k | k `eqKind` liftedTypeKind = C.Klifted
156 make_kind k | k `eqKind` unliftedTypeKind = C.Kunlifted
157 make_kind k | k `eqKind` openTypeKind = C.Kopen
158 make_kind _ = error "MkExternalCore died: make_kind"
162 {- Use encoded strings.
163 Also, adjust casing to work around some badly-chosen internal names. -}
164 make_id :: Bool -> Name -> C.Id
165 make_id is_var nm = (occNameString . nameOccName) nm
167 {- SIMON thinks this stuff isn't necessary
170 'Z':cs | is_var -> 'z':cs
171 'z':cs | not is_var -> 'Z':cs
172 c:cs | isUpper c && is_var -> 'z':'d':n
173 c:cs | isLower c && (not is_var) -> 'Z':'d':n
175 where n = (occNameString . nameOccName) nm
178 make_var_id :: Name -> C.Id
179 make_var_id = make_id True
181 make_mid :: Module -> C.Id
182 make_mid = moduleNameString . moduleName
184 make_qid :: Bool -> Name -> C.Qual C.Id
185 make_qid is_var n = (mname,make_id is_var n)
187 case nameModule_maybe n of
191 make_var_qid :: Name -> C.Qual C.Id
192 make_var_qid = make_qid True
194 make_con_qid :: Name -> C.Qual C.Id
195 make_con_qid = make_qid False