+++ /dev/null
-%
-% (c) The University of Glasgow 2001
-%
-\begin{code}
-
-module MkExternalCore (
- emitExternalCore
-) where
-
-#include "HsVersions.h"
-
-import qualified ExternalCore as C
-import Char
-import Module
-import CoreSyn
-import HscTypes
-import TyCon
-import TypeRep
-import Type
-import PprExternalCore -- Instances
-import DataCon ( DataCon, dataConTyVars, dataConRepArgTys,
- dataConName, dataConTyCon )
-import CoreSyn
-import Var
-import IdInfo
-import Kind
-import Literal
-import Name
-import Outputable
-import ForeignCall
-import DynFlags ( DynFlags(..) )
-import StaticFlags ( opt_EmitExternalCore )
-import IO
-import FastString
-
-emitExternalCore :: DynFlags -> CgGuts -> IO ()
-emitExternalCore dflags cg_guts
- | opt_EmitExternalCore
- = (do handle <- openFile corename WriteMode
- hPutStrLn handle (show (mkExternalCore cg_guts))
- hClose handle)
- `catch` (\err -> pprPanic "Failed to open or write external core output file"
- (text corename))
- where corename = extCoreName dflags
-emitExternalCore _ _
- | otherwise
- = return ()
-
-
-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 (CgGuts {cg_module=this_mod, cg_tycons = tycons, cg_binds = binds})
- = C.Module mname tdefs (map make_vdef binds)
- where
- mname = make_mid this_mod
- tdefs = foldr collect_tdefs [] tycons
-
-collect_tdefs :: TyCon -> [C.Tdef] -> [C.Tdef]
-collect_tdefs tcon tdefs
- | isAlgTyCon tcon = tdef: tdefs
- where
- tdef | isNewTyCon tcon =
- 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_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
- 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)
- existentials = map make_tbind ex_tyvars
- ex_tyvars = drop (tyConArity (dataConTyCon dcon)) (dataConTyVars 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 (idType v))
-
-make_vdef :: CoreBind -> C.Vdefg
-make_vdef b =
- case b of
- NonRec v e -> C.Nonrec (f (v,e))
- Rec ves -> C.Rec (map f ves)
- where f (v,e) = (make_var_id (Var.varName v), make_ty (idType v),make_exp e)
- -- 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) _ _)) -> C.External (unpackFS nm) (make_ty (idType 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 (make_vdef 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 (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 (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)
-
-make_lit :: Literal -> C.Lit
-make_lit l =
- case l of
- MachChar i -> C.Lchar i t
- 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
- _ -> 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 (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)
--- Newtypes are treated just like any other type constructor; not expanded
--- Reason: predTypeRep 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 (PredTy p) = make_ty (predTypeRep p)
-make_ty (NoteTy _ t) = make_ty t
-
-
-
-make_kind :: Kind -> C.Kind
-make_kind (FunKind k1 k2) = C.Karrow (make_kind k1) (make_kind k2)
-make_kind LiftedTypeKind = C.Klifted
-make_kind UnliftedTypeKind = C.Kunlifted
-make_kind OpenTypeKind = C.Kopen
-make_kind _ = error "MkExternalCore died: make_kind"
-
-{- 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_var_id :: Name -> C.Id
-make_var_id = make_id True
-
-make_mid :: Module -> C.Id
-make_mid = moduleString
-
-make_qid :: Bool -> Name -> C.Qual C.Id
-make_qid is_var n = (mname,make_id is_var n)
- where mname =
- case nameModule_maybe n of
- Just m -> make_mid m
- Nothing -> ""
-
-make_var_qid :: Name -> C.Qual C.Id
-make_var_qid = make_qid True
-
-make_con_qid :: Name -> C.Qual C.Id
-make_con_qid = make_qid False
-
-\end{code}
-
-
-
-
projects / ghc-hetmet.git / blobdiff