% (c) The University of Glasgow 2001-2006
%
\begin{code}
-{-# OPTIONS_GHC -w #-}
--- The above warning supression flag is a temporary kludge.
--- While working on this module you are encouraged to remove it and fix
--- any warnings in the module. See
--- http://hackage.haskell.org/trac/ghc/wiki/WorkingConventions#Warnings
--- for details
-
module MkExternalCore (
emitExternalCore
) where
= (do handle <- openFile corename WriteMode
hPutStrLn handle (show (mkExternalCore exports cg_guts))
hClose handle)
- `catch` (\err -> pprPanic "Failed to open or write external core output file"
- (text corename))
+ `catch` (\_ -> pprPanic "Failed to open or write external core output file"
+ (text corename))
where corename = extCoreName dflags
emitExternalCore _ _ _
| otherwise
| isAlgTyCon tcon = tdef: tdefs
where
tdef | isNewTyCon tcon =
- C.Newtype (make_con_qid (tyConName tcon)) (map make_tbind tyvars) repclause
--- 20060420 GHC handles empty data types just fine. ExtCore should too! jds
--- | null (tyConDataCons tcon) = error "MkExternalCore died: can't handle datatype declarations with no data constructors"
+ C.Newtype (qtc tcon) (map make_tbind tyvars)
+ (case newTyConCo_maybe tcon of
+ Just coercion -> (qtc coercion,
+ make_kind $ (uncurry mkCoKind) $
+ case isCoercionTyCon_maybe coercion of
+ -- See Note [Newtype coercions] in
+ -- types/TyCon
+ Just (arity,coKindFun) -> coKindFun $
+ map mkTyVarTy $ take arity tyvars
+ Nothing -> pprPanic ("MkExternalCore:\
+ coercion tcon should have a kind fun")
+ (ppr tcon))
+ Nothing -> pprPanic ("MkExternalCore: newtype tcon\
+ should have a coercion: ") (ppr tcon))
+ repclause
| otherwise =
- C.Data (make_con_qid (tyConName tcon)) (map make_tbind tyvars) (map make_cdef (tyConDataCons tcon))
+ C.Data (qtc tcon) (map make_tbind tyvars) (map make_cdef (tyConDataCons tcon))
where repclause | isRecursiveTyCon tcon || isOpenTyCon tcon= Nothing
- | otherwise = Just (make_ty rep)
- where (_, rep) = newTyConRep tcon
+ | otherwise = Just (make_ty (repType rhs))
+ where (_, rhs) = newTyConRhs tcon
tyvars = tyConTyVars tcon
collect_tdefs _ tdefs = tdefs
+qtc :: TyCon -> C.Qual C.Tcon
+qtc = make_con_qid . tyConName
+
make_cdef :: DataCon -> C.Cdef
make_cdef dcon = C.Constr dcon_name existentials tys
-> pprPanic "MkExternalCore died: can't handle non-{static,dynamic}-C foreign call"
(ppr v)
_ -> C.Var (make_var_qid (Var.varName v))
-make_exp (Lit (l@(MachLabel s _))) = C.Label (unpackFS s)
+make_exp (Lit (MachLabel s _)) = C.Label (unpackFS s)
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 (Let b e) = C.Let (make_vdef emptyNameSet b) (make_exp e)
-- gaw 2004
make_exp (Case e v ty alts) = C.Case (make_exp e) (make_vbind v) (make_ty ty) (map make_alt alts)
-make_exp (Note (SCC cc) e) = C.Note "SCC" (make_exp e) -- temporary
+make_exp (Note (SCC _) e) = C.Note "SCC" (make_exp e) -- temporary
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"
(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)
+make_alt (LitAlt l,_,e) = C.Alit (make_lit l) (make_exp e)
+make_alt (DEFAULT,[],e) = C.Adefault (make_exp e)
+-- This should never happen, as the DEFAULT alternative binds no variables,
+-- but we might as well check for it:
+make_alt a@(DEFAULT,_ ,_) = pprPanic ("MkExternalCore: make_alt: DEFAULT "
+ ++ "alternative had a non-empty var list") (ppr a)
+
make_lit :: Literal -> C.Lit
make_lit l =
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)))
+make_ty (TyConApp tc ts) = foldl C.Tapp (C.Tcon (qtc tc))
(map make_ty ts)
-- Newtypes are treated just like any other type constructor; not expanded
-- Reason: predTypeRep does substitution and, while substitution deals
-- Maybe CoreTidy should know whether to expand newtypes or not?
make_ty (PredTy p) = make_ty (predTypeRep p)
-make_ty (NoteTy _ t) = make_ty t
{- Id generation. -}
-{- 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
- '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
--}
+make_id _is_var nm = (occNameString . nameOccName) nm
make_var_id :: Name -> C.Id
make_var_id = make_id True
+-- It's important to encode the module name here, because in External Core,
+-- base:GHC.Base => base:GHCziBase
+-- We don't do this in pprExternalCore because we
+-- *do* want to keep the package name (we don't want baseZCGHCziBase,
+-- because that would just be ugly.)
+-- SIGH.
make_mid :: Module -> C.Id
-make_mid = showSDoc . pprModule
-
+-- Super ugly code, but I can't find anything else that does quite what I
+-- want (encodes the hierarchical module name without encoding the colon
+-- that separates the package name from it.)
+make_mid m = (packageIdString (modulePackageId m)) ++
+ ":" ++
+ showSDoc (pprCode CStyle (pprModuleName (moduleName m)))
+
make_qid :: Bool -> Name -> C.Qual C.Id
make_qid is_var n = (mname,make_id is_var n)
where mname =
projects / ghc-hetmet.git / blobdiff