import CoreSyn
import HscTypes
import TyCon
+import Class
import TypeRep
import Type
-import DataCon
+import DataCon ( DataCon, dataConExistentialTyVars, dataConRepArgTys,
+ dataConName, dataConWrapId_maybe )
import CoreSyn
import Var
import IdInfo
+import Id ( idUnfolding )
+import CoreTidy ( tidyExpr )
+import VarEnv ( emptyTidyEnv )
import Literal
import Name
import CostCentre
import ForeignCall
import PprExternalCore
import CmdLineOpts
+import Maybes ( orElse, catMaybes )
import IO
+import FastString
-emitExternalCore :: DynFlags -> ModIface -> ModDetails -> IO ()
-emitExternalCore dflags iface details
+emitExternalCore :: DynFlags -> ModGuts -> IO ()
+emitExternalCore dflags mod_impl
| opt_EmitExternalCore
= (do handle <- openFile corename WriteMode
- hPutStr handle (show (mkExternalCore iface details))
+ hPutStrLn handle (show (mkExternalCore mod_impl))
hClose handle)
`catch` (\err -> pprPanic "Failed to open or write external core output file"
(text corename))
where corename = extCoreName dflags
-emitExternalCore _ _ _
+emitExternalCore _ _
| otherwise
= return ()
-mkExternalCore :: ModIface -> ModDetails -> C.Module
-mkExternalCore (ModIface {mi_module=mi_module,mi_exports=mi_exports})
- (ModDetails {md_types=md_types,md_binds=md_binds}) =
- C.Module mname {- exports -} tdefs vdefs
+mkExternalCore :: ModGuts -> C.Module
+-- The ModGuts has been tidied, but the implicit bindings have
+-- not been injected, so we have to add them manually here
+-- We don't include the strange data-con *workers* because they are
+-- implicit in the data type declaration itself
+mkExternalCore (ModGuts {mg_module=this_mod, mg_types = type_env, mg_binds = binds})
+ = C.Module mname tdefs (map make_vdef all_binds)
where
- mname = make_mid mi_module
-{- exports = foldr (collect_exports md_types) ([],[],[]) all_avails
- all_avails = concat (map snd (filter ((== moduleName mi_module) . fst) mi_exports))
--}
- tdefs = foldr collect_tdefs [] (typeEnvTyCons md_types)
- vdefs = map make_vdef md_binds
-
-{-
-collect_exports :: TypeEnv -> AvailInfo -> ([C.Tcon],[C.Dcon],[C.Var]) -> ([C.Tcon],[C.Dcon],[C.Var])
-collect_exports tyenv (Avail n) (tcons,dcons,vars) = (tcons,dcons,make_var_id n:vars)
-collect_exports tyenv (AvailTC n ns) (tcons,dcons,vars) =
- case lookupNameEnv_NF tyenv n of
- ATyCon tc | isAlgTyCon tc ->
- (tcon ++ tcons,workers ++ dcons,wrappers ++ vars)
- where
- tcon = if elem n ns then [make_con_id n] else []
- workers = if isNewTyCon tc then []
- else map (make_con_id . idName . dataConId) exported_dcs
- exported_dcs = filter (\dc -> elem ((idName . dataConWrapId) dc) ns') dcs
- dcs = tyConDataConsIfAvailable tc
- wrappers = map make_var_id ns'
- ns' = filter (\n' -> n' /= n && not (elem n' recordSels)) ns
- recordSels = map idName (tyConSelIds tc)
- AClass cl -> {- maybe a little too free about exports -}
- (tcon : tcons,workers ++ dcons,wrappers ++ vars)
- where
- tcon = make_con_id (tyConName tc)
- workers = if isNewTyCon tc then []
- else map (make_con_id . idName . dataConId) dcs
- wrappers = map (make_var_id . idName . dataConWrapId) dcs
- dcs = tyConDataConsIfAvailable tc
- tc = classTyCon cl
- _ -> (tcons,dcons,vars)
--}
+ mname = make_mid this_mod
+ tdefs = foldr collect_tdefs [] tycons
+
+ all_binds = implicit_con_wrappers ++ other_implicit_binds ++ binds
+ -- Put the constructor wrappers first, because
+ -- other implicit bindings (notably the fromT functions arising
+ -- from generics) use the constructor wrappers.
+
+ tycons = map classTyCon (typeEnvClasses type_env) ++ typeEnvTyCons type_env
+
+ implicit_con_wrappers = map get_defn (concatMap implicit_con_ids (typeEnvElts type_env))
+ other_implicit_binds = map get_defn (concatMap other_implicit_ids (typeEnvElts type_env))
+
+implicit_con_ids :: TyThing -> [Id]
+implicit_con_ids (ATyCon tc) | isAlgTyCon tc = catMaybes (map dataConWrapId_maybe (tyConDataCons tc))
+implicit_con_ids other = []
+other_implicit_ids :: TyThing -> [Id]
+other_implicit_ids (ATyCon tc) = tyConSelIds tc ++ tyConGenIds tc
+other_implicit_ids (AClass cl) = classSelIds cl
+other_implicit_ids other = []
+
+get_defn :: Id -> CoreBind
+get_defn id = NonRec id rhs
+ where
+ rhs = tidyExpr emptyTidyEnv body
+ body = unfoldingTemplate (idUnfolding id)
+ -- Don't forget to tidy the body ! Otherwise you get silly things like
+ -- \ tpl -> case tpl of tpl -> (tpl,tpl) -> tpl
+ -- Maybe we should inject these bindings during CoreTidy?
collect_tdefs :: TyCon -> [C.Tdef] -> [C.Tdef]
collect_tdefs tcon tdefs
| isAlgTyCon tcon = tdef: tdefs
where
tdef | isNewTyCon tcon =
- C.Newtype (make_con_id (tyConName tcon)) (map make_tbind tyvars) repclause
+ C.Newtype (make_con_qid (tyConName tcon)) (map make_tbind tyvars) repclause
+ | null (tyConDataCons tcon) = error "MkExternalCore died: can't handle datatype declarations with no data constructors"
| otherwise =
- C.Data (make_con_id (tyConName tcon)) (map make_tbind tyvars) (map make_cdef (tyConDataCons tcon))
+ C.Data (make_con_qid (tyConName tcon)) (map make_tbind tyvars) (map make_cdef (tyConDataCons tcon))
where repclause | isRecursiveTyCon tcon = Nothing
| otherwise = Just (make_ty rep)
where (_, rep) = newTyConRep tcon
make_cdef :: DataCon -> C.Cdef
make_cdef dcon = C.Constr dcon_name existentials tys
where
- dcon_name = make_con_id (idName (dataConId dcon))
+ dcon_name = make_con_qid (dataConName dcon)
existentials = map make_tbind ex_tyvars
- where (_,_,ex_tyvars,_,_,_) = dataConSig dcon
- tys = map make_ty (dataConRepArgTys dcon)
+ ex_tyvars = dataConExistentialTyVars dcon
+ tys = map make_ty (dataConRepArgTys dcon)
make_tbind :: TyVar -> C.Tbind
make_tbind tv = (make_var_id (tyVarName tv), make_kind (tyVarKind tv))
make_vbind :: Var -> C.Vbind
make_vbind v = (make_var_id (Var.varName v), make_ty (varType v))
-make_vdef :: CoreBind -> (Bool, C.Vdefg)
+make_vdef :: CoreBind -> C.Vdefg
make_vdef b =
case b of
- NonRec v e -> (isGlobalId v,C.Nonrec (f (v,e)))
- Rec ves -> (or (map g ves),C.Rec (map f ves))
- where f (v,e) = (n,t,make_exp e)
- where (n,t) = make_vbind v
- g (v,e) = isGlobalId v
+ NonRec v e -> C.Nonrec (f (v,e))
+ Rec ves -> C.Rec (map f ves)
+ where f (v,e) = (make_var_qid (Var.varName v), make_ty (varType v),make_exp e)
make_exp :: CoreExpr -> C.Exp
make_exp (Var v) =
case globalIdDetails v of
- DataConId _ -> C.Dcon (make_con_qid (Var.varName v))
- FCallId (CCall (CCallSpec (StaticTarget nm) _ _)) -> C.Ccall (_UNPK_ nm) (make_ty (varType v))
+ -- a DataConId represents the Id of a worker, which is a varName. -- sof 4/02
+-- DataConId _ -> C.Dcon (make_con_qid (Var.varName v))
+ FCallId (CCall (CCallSpec (StaticTarget nm) _ _)) -> C.External (unpackFS nm) (make_ty (varType v))
+ FCallId _ -> error "MkExternalCore died: can't handle non-static-C foreign call"
_ -> C.Var (make_var_qid (Var.varName v))
+make_exp (Lit (l@(MachLabel s _))) = error "MkExternalCore died: can't handle \"foreign label\" declarations"
make_exp (Lit l) = C.Lit (make_lit l)
make_exp (App e (Type t)) = C.Appt (make_exp e) (make_ty t)
make_exp (App e1 e2) = C.App (make_exp e1) (make_exp e2)
make_exp (Lam v e) | isTyVar v = C.Lam (C.Tb (make_tbind v)) (make_exp e)
make_exp (Lam v e) | otherwise = C.Lam (C.Vb (make_vbind v)) (make_exp e)
-make_exp (Let b e) = C.Let (snd (make_vdef b)) (make_exp e)
+make_exp (Let b e) = C.Let (make_vdef b) (make_exp e)
make_exp (Case e v alts) = C.Case (make_exp e) (make_vbind v) (map make_alt alts)
make_exp (Note (SCC cc) e) = C.Note "SCC" (make_exp e) -- temporary
make_exp (Note (Coerce t_to t_from) e) = C.Coerce (make_ty t_to) (make_exp e)
make_exp (Note InlineCall e) = C.Note "InlineCall" (make_exp e)
+make_exp (Note (CoreNote s) e) = C.Note s (make_exp e) -- hdaume: core annotations
make_exp (Note InlineMe e) = C.Note "InlineMe" (make_exp e)
make_exp _ = error "MkExternalCore died: make_exp"
make_alt :: CoreAlt -> C.Alt
make_alt (DataAlt dcon, vs, e) =
- C.Acon (make_con_qid (idName (dataConId dcon))) (map make_tbind tbs) (map make_vbind vbs) (make_exp e)
+ C.Acon (make_con_qid (dataConName dcon))
+ (map make_tbind tbs)
+ (map make_vbind vbs)
+ (make_exp e)
where (tbs,vbs) = span isTyVar vs
make_alt (LitAlt l,_,e) = C.Alit (make_lit l) (make_exp e)
make_alt (DEFAULT,[],e) = C.Adefault (make_exp e)
case l of
MachChar i | i <= 0xff -> C.Lchar (chr i) t
MachChar i | otherwise -> C.Lint (toEnum i) t
- MachStr s -> C.Lstring (_UNPK_ s) t
- MachAddr i -> C.Lint i t
+ -- For big characters, use an integer literal with a character type sig
+ MachStr s -> C.Lstring (unpackFS s) t
+ MachNullAddr -> C.Lint 0 t
MachInt i -> C.Lint i t
MachInt64 i -> C.Lint i t
MachWord i -> C.Lint i t
MachWord64 i -> C.Lint i t
MachFloat r -> C.Lrational r t
MachDouble r -> C.Lrational r t
- MachLabel s -> C.Lstring (_UNPK_ s) t
_ -> error "MkExternalCore died: make_lit"
where
t = make_ty (literalType l)
make_ty :: Type -> C.Ty
-make_ty (TyVarTy tv) = C.Tvar (make_var_id (tyVarName tv))
-make_ty (AppTy t1 t2) = C.Tapp (make_ty t1) (make_ty t2)
-make_ty (TyConApp tc ts) = foldl C.Tapp (C.Tcon (make_con_qid (tyConName tc))) (map make_ty ts)
-make_ty (FunTy t1 t2) = make_ty (TyConApp funTyCon [t1,t2])
-make_ty (ForAllTy tv t) = C.Tforall (make_tbind tv) (make_ty t)
-make_ty (SourceTy p) = make_ty (sourceTypeRep p)
-make_ty (UsageTy _ t) = make_ty t
-make_ty (NoteTy _ t) = make_ty t
+make_ty (TyVarTy tv) = C.Tvar (make_var_id (tyVarName tv))
+make_ty (AppTy t1 t2) = C.Tapp (make_ty t1) (make_ty t2)
+make_ty (FunTy t1 t2) = make_ty (TyConApp funTyCon [t1,t2])
+make_ty (ForAllTy tv t) = C.Tforall (make_tbind tv) (make_ty t)
+make_ty (TyConApp tc ts) = foldl C.Tapp (C.Tcon (make_con_qid (tyConName tc)))
+ (map make_ty ts)
+-- The special case for newtypes says "do not expand newtypes".
+-- Reason: sourceTypeRep does substitution and, while substitution deals
+-- correctly with name capture, it's only correct if you see the uniques!
+-- If you just see occurrence names, name capture may occur.
+-- Example: newtype A a = A (forall b. b -> a)
+-- test :: forall q b. q -> A b
+-- test _ = undefined
+-- Here the 'a' gets substituted by 'b', which is captured.
+-- Another solution would be to expand newtypes before tidying; but that would
+-- expose the representation in interface files, which definitely isn't right.
+-- Maybe CoreTidy should know whether to expand newtypes or not?
+
+make_ty (SourceTy (NType tc ts)) = foldl C.Tapp (C.Tcon (make_con_qid (tyConName tc)))
+ (map make_ty ts)
+
+make_ty (SourceTy p) = make_ty (sourceTypeRep p)
+make_ty (NoteTy _ t) = make_ty t
+
make_kind :: Kind -> C.Kind
{- Id generation. -}
-{- Use encoded strings, except restore '#'s.
+{- Use encoded strings.
Also, adjust casing to work around some badly-chosen internal names. -}
make_id :: Bool -> Name -> C.Id
+make_id is_var nm = (occNameString . nameOccName) nm
+
+{- SIMON thinks this stuff isn't necessary
make_id is_var nm =
case n of
- c:cs -> if isUpper c && is_var then (toLower c):(decode cs)
- else if isLower c && (not is_var) then (toUpper c):(decode cs)
- else decode n
+ 'Z':cs | is_var -> 'z':cs
+ 'z':cs | not is_var -> 'Z':cs
+ c:cs | isUpper c && is_var -> 'z':'d':n
+ c:cs | isLower c && (not is_var) -> 'Z':'d':n
+ _ -> n
where n = (occNameString . nameOccName) nm
- decode ('z':'h':cs) = '#':(decode cs)
- decode (c:cs) = c:(decode cs)
- decode [] = []
+-}
make_var_id :: Name -> C.Id
make_var_id = make_id True
-make_con_id :: Name -> C.Id
-make_con_id = make_id False
-
make_mid :: Module -> C.Id
make_mid = moduleNameString . moduleName
where mname =
case nameModule_maybe n of
Just m -> make_mid m
- Nothing -> "" -- for now!
+ Nothing -> ""
make_var_qid :: Name -> C.Qual C.Id
make_var_qid = make_qid True
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