import IdInfo
import Literal
import Name
-import NameSet
-import UniqSet
import Outputable
+import Encoding
import ForeignCall
import DynFlags
import StaticFlags
-import IO
import FastString
-emitExternalCore :: DynFlags -> NameSet -> CgGuts -> IO ()
-emitExternalCore dflags exports cg_guts
+import IO
+import Data.Char
+
+emitExternalCore :: DynFlags -> CgGuts -> IO ()
+emitExternalCore dflags cg_guts
| opt_EmitExternalCore
= (do handle <- openFile corename WriteMode
- hPutStrLn handle (show (mkExternalCore exports cg_guts))
+ hPutStrLn handle (show (mkExternalCore cg_guts))
hClose handle)
`catch` (\_ -> pprPanic "Failed to open or write external core output file"
(text corename))
where corename = extCoreName dflags
-emitExternalCore _ _ _
+emitExternalCore _ _
| otherwise
= return ()
-
-mkExternalCore :: NameSet -> CgGuts -> C.Module
+-- Reinventing the Reader monad; whee.
+newtype CoreM a = CoreM (CoreState -> (CoreState, a))
+type CoreState = Module
+instance Monad CoreM where
+ (CoreM m) >>= f = CoreM (\ s -> case m s of
+ (s',r) -> case f r of
+ CoreM f' -> f' s')
+ return x = CoreM (\ s -> (s, x))
+runCoreM :: CoreM a -> CoreState -> a
+runCoreM (CoreM f) s = snd $ f s
+ask :: CoreM CoreState
+ask = CoreM (\ s -> (s,s))
+
+mkExternalCore :: CgGuts -> 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 exports (CgGuts {cg_module=this_mod, cg_tycons = tycons, cg_binds = binds})
- = C.Module mname tdefs (map (make_vdef exports) binds)
+mkExternalCore (CgGuts {cg_module=this_mod, cg_tycons = tycons,
+ cg_binds = binds})
+ -- Note that we flatten binds at the top level:
+ -- every module is just a single recursive bag of declarations.
+ -- Rationale: since modules can be mutually recursive,
+ -- there's not much reason to preserve dependency info within a module.
+ = C.Module mname tdefs (case flattenBinds binds of
+ -- check for empty list so we don't create an
+ -- empty Rec group
+ [] -> []
+ bs -> [(runCoreM (make_vdef True
+ (Rec bs)) this_mod)])
where
mname = make_mid this_mod
tdefs = foldr collect_tdefs [] tycons
| isAlgTyCon tcon = tdef: tdefs
where
tdef | isNewTyCon tcon =
- C.Newtype (qtc tcon) (map make_tbind tyvars)
+ C.Newtype (qtc tcon)
(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))
+ Just co -> qtc co
Nothing -> pprPanic ("MkExternalCore: newtype tcon\
should have a coercion: ") (ppr tcon))
+ (map make_tbind tyvars)
repclause
| otherwise =
- C.Data (qtc 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 (repType rhs))
- where (_, rhs) = newTyConRhs tcon
+ | otherwise = Just (make_ty (snd (newTyConRhs tcon)))
tyvars = tyConTyVars tcon
collect_tdefs _ tdefs = tdefs
make_cdef :: DataCon -> C.Cdef
make_cdef dcon = C.Constr dcon_name existentials tys
where
- dcon_name = make_var_id (dataConName dcon)
+ dcon_name = make_qid False False (dataConName dcon)
existentials = map make_tbind ex_tyvars
ex_tyvars = dataConExTyVars dcon
tys = map make_ty (dataConRepArgTys dcon)
make_vbind :: Var -> C.Vbind
make_vbind v = (make_var_id (Var.varName v), make_ty (idType v))
-make_vdef :: NameSet -> CoreBind -> C.Vdefg
-make_vdef exports b =
+make_vdef :: Bool -> CoreBind -> CoreM C.Vdefg
+make_vdef topLevel b =
case b of
- NonRec v e -> C.Nonrec (f (v,e))
- Rec ves -> C.Rec (map f ves)
+ NonRec v e -> f (v,e) >>= (return . C.Nonrec)
+ Rec ves -> mapM f ves >>= (return . C.Rec)
where
- f (v,e) = (local, make_var_id (Var.varName v), make_ty (idType v),make_exp e)
- where local = not $ elementOfUniqSet (Var.varName v) exports
- -- Top level bindings are unqualified now
-
-make_exp :: CoreExpr -> C.Exp
-make_exp (Var v) =
- case globalIdDetails v of
- -- 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) callconv _))
- -> C.External (unpackFS nm) (showSDoc (ppr callconv)) (make_ty (idType v))
- FCallId (CCall (CCallSpec DynamicTarget callconv _))
- -> C.DynExternal (showSDoc (ppr callconv)) (make_ty (idType v))
- FCallId _
- -> pprPanic "MkExternalCore died: can't handle non-{static,dynamic}-C foreign call"
+ f :: (CoreBndr,CoreExpr) -> CoreM C.Vdef
+ f (v,e) = do
+ localN <- isALocal vName
+ let local = not topLevel || localN
+ rhs <- make_exp e
+ -- use local flag to determine where to add the module name
+ return (local, make_qid local True vName, make_ty (idType v),rhs)
+ where vName = Var.varName v
+
+make_exp :: CoreExpr -> CoreM C.Exp
+make_exp (Var v) = do
+ let vName = Var.varName v
+ isLocal <- isALocal vName
+ return $
+ case globalIdDetails v of
+ FCallId (CCall (CCallSpec (StaticTarget nm) callconv _))
+ -> C.External (unpackFS nm) (showSDoc (ppr callconv)) (make_ty (idType v))
+ FCallId (CCall (CCallSpec DynamicTarget callconv _))
+ -> C.DynExternal (showSDoc (ppr callconv)) (make_ty (idType v))
+ FCallId _
+ -> 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 (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 (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 (Cast e co) = C.Cast (make_exp e) (make_ty co)
-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 _) 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)
+ -- Constructors are always exported, so make sure to declare them
+ -- with qualified names
+ DataConWorkId _ -> C.Var (make_var_qid False vName)
+ DataConWrapId _ -> C.Var (make_var_qid False vName)
+ _ -> C.Var (make_var_qid isLocal vName)
+make_exp (Lit (MachLabel s _)) = return $ C.Label (unpackFS s)
+make_exp (Lit l) = return $ C.Lit (make_lit l)
+make_exp (App e (Type t)) = make_exp e >>= (\ b -> return $ C.Appt b (make_ty t))
+make_exp (App e1 e2) = do
+ rator <- make_exp e1
+ rand <- make_exp e2
+ return $ C.App rator rand
+make_exp (Lam v e) | isTyVar v = make_exp e >>= (\ b ->
+ return $ C.Lam (C.Tb (make_tbind v)) b)
+make_exp (Lam v e) | otherwise = make_exp e >>= (\ b ->
+ return $ C.Lam (C.Vb (make_vbind v)) b)
+make_exp (Cast e co) = make_exp e >>= (\ b -> return $ C.Cast b (make_ty co))
+make_exp (Let b e) = do
+ vd <- make_vdef False b
+ body <- make_exp e
+ return $ C.Let vd body
+make_exp (Case e v ty alts) = do
+ scrut <- make_exp e
+ newAlts <- mapM make_alt alts
+ return $ C.Case scrut (make_vbind v) (make_ty ty) newAlts
+make_exp (Note (SCC _) e) = make_exp e >>= (return . C.Note "SCC") -- temporary
+make_exp (Note (CoreNote s) e) = make_exp e >>= (return . C.Note s) -- hdaume: core annotations
+make_exp (Note InlineMe e) = make_exp e >>= (return . C.Note "InlineMe")
make_exp _ = error "MkExternalCore died: make_exp"
-make_alt :: CoreAlt -> C.Alt
-make_alt (DataAlt dcon, vs, e) =
- C.Acon (make_con_qid (dataConName dcon))
+make_alt :: CoreAlt -> CoreM C.Alt
+make_alt (DataAlt dcon, vs, e) = do
+ newE <- make_exp e
+ return $ C.Acon (make_con_qid (dataConName dcon))
(map make_tbind tbs)
(map make_vbind vbs)
- (make_exp e)
+ newE
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) = make_exp e >>= (return . (C.Alit (make_lit l)))
+make_alt (DEFAULT,[],e) = make_exp e >>= (return . C.Adefault)
-- 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 "
make_lit :: Literal -> C.Lit
make_lit l =
case l of
- MachChar i -> C.Lchar i t
+ -- Note that we need to check whether the character is "big".
+ -- External Core only allows character literals up to '\xff'.
+ MachChar i | i <= chr 0xff -> C.Lchar i t
+ -- For a character bigger than 0xff, we represent it in ext-core
+ -- as an int lit with a char type.
+ MachChar i -> C.Lint (fromIntegral $ ord i) t
MachStr s -> C.Lstring (unpackFS s) t
MachNullAddr -> C.Lint 0 t
MachInt i -> C.Lint i t
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 (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 (qtc tc))
+-- Expand type synonyms, then convert.
+make_ty :: Type -> C.Ty -- Be sure to expand types recursively!
+ -- example: FilePath ~> String ~> [Char]
+make_ty t | Just expanded <- tcView t = make_ty expanded
+make_ty t = make_ty' t
+
+-- note calls to make_ty so as to expand types recursively
+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' (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 (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
-- expose the representation in interface files, which definitely isn't right.
-- Maybe CoreTidy should know whether to expand newtypes or not?
-make_ty (PredTy p) = make_ty (predTypeRep p)
+make_ty' (PredTy p) = make_ty (predTypeRep p)
{- Id generation. -}
make_id :: Bool -> Name -> C.Id
-make_id _is_var nm = (occNameString . nameOccName) nm
+-- include uniques for internal names in order to avoid name shadowing
+make_id _is_var nm = ((occNameString . nameOccName) nm)
+ ++ (if isInternalName nm then (show . nameUnique) nm else "")
make_var_id :: Name -> C.Id
make_var_id = make_id True
-- *do* want to keep the package name (we don't want baseZCGHCziBase,
-- because that would just be ugly.)
-- SIGH.
+-- We encode the package name as well.
make_mid :: Module -> C.Id
-- 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_mid m = showSDoc $
+ (text $ zEncodeString $ packageIdString $ modulePackageId m)
+ <> text ":"
+ <> (pprEncoded $ pprModuleName $ moduleName m)
+ where pprEncoded = pprCode CStyle
-make_qid :: Bool -> Name -> C.Qual C.Id
-make_qid is_var n = (mname,make_id is_var n)
+make_qid :: Bool -> Bool -> Name -> C.Qual C.Id
+make_qid force_unqual is_var n = (mname,make_id is_var n)
where mname =
case nameModule_maybe n of
- Just m -> make_mid m
- Nothing -> ""
+ Just m | not force_unqual -> make_mid m
+ _ -> ""
-make_var_qid :: Name -> C.Qual C.Id
-make_var_qid = make_qid True
+make_var_qid :: Bool -> Name -> C.Qual C.Id
+make_var_qid force_unqual = make_qid force_unqual True
make_con_qid :: Name -> C.Qual C.Id
-make_con_qid = make_qid False
-
+make_con_qid = make_qid False False
+
+-------
+isALocal :: Name -> CoreM Bool
+isALocal vName = do
+ modName <- ask
+ return $ case nameModule_maybe vName of
+ -- Not sure whether isInternalName corresponds to "local"ness
+ -- in the External Core sense; need to re-read the spec.
+ Just m | m == modName -> isInternalName vName
+ _ -> False
\end{code}
projects / ghc-hetmet.git / blobdiff