)
import RnHsSyn ( RenamedHsDecl, RenamedForeignDecl )
-import TcMonad
-import TcEnv ( newLocalName )
+import TcRnMonad
import TcMonoType ( tcHsSigType, UserTypeCtxt(..) )
-import TcHsSyn ( TcMonoBinds, TypecheckedForeignDecl, TcForeignExportDecl )
+import TcHsSyn ( TcMonoBinds, TypecheckedForeignDecl, TcForeignDecl )
import TcExpr ( tcExpr )
-import Inst ( emptyLIE, LIE, plusLIE )
import ErrUtils ( Message )
-import Id ( Id, mkLocalId )
+import Id ( Id, mkLocalId, mkVanillaGlobal, setIdLocalExported )
+import IdInfo ( noCafIdInfo )
import PrimRep ( getPrimRepSize, isFloatingRep )
import Type ( typePrimRep )
+import OccName ( mkForeignExportOcc )
+import Name ( NamedThing(..), mkExternalName )
import TcType ( Type, tcSplitFunTys, tcSplitTyConApp_maybe,
tcSplitForAllTys,
isFFIArgumentTy, isFFIImportResultTy,
isFFIExportResultTy, isFFILabelTy,
isFFIExternalTy, isFFIDynArgumentTy,
- isFFIDynResultTy, isForeignPtrTy
+ isFFIDynResultTy,
)
-import ForeignCall ( CCallSpec(..), CExportSpec(..), CCallTarget(..),
+import ForeignCall ( CExportSpec(..), CCallTarget(..), CCallConv(..),
isDynamicTarget, isCasmTarget )
import CStrings ( CLabelString, isCLabelString )
import PrelNames ( hasKey, ioTyConKey )
\begin{code}
tcForeignImports :: [RenamedHsDecl] -> TcM ([Id], [TypecheckedForeignDecl])
tcForeignImports decls =
- mapAndUnzipTc tcFImport
+ mapAndUnzipM tcFImport
[ foreign_decl | ForD foreign_decl <- decls, isForeignImport foreign_decl]
tcFImport :: RenamedForeignDecl -> TcM (Id, TypecheckedForeignDecl)
tcFImport fo@(ForeignImport nm hs_ty imp_decl isDeprec src_loc)
- = tcAddSrcLoc src_loc $
- tcAddErrCtxt (foreignDeclCtxt fo) $
- tcHsSigType (ForSigCtxt nm) hs_ty `thenTc` \ sig_ty ->
+ = addSrcLoc src_loc $
+ addErrCtxt (foreignDeclCtxt fo) $
+ tcHsSigType (ForSigCtxt nm) hs_ty `thenM` \ sig_ty ->
let
-- drop the foralls before inspecting the structure
-- of the foreign type.
(_, t_ty) = tcSplitForAllTys sig_ty
(arg_tys, res_ty) = tcSplitFunTys t_ty
- id = mkLocalId nm sig_ty
+ id = mkVanillaGlobal nm sig_ty noCafIdInfo
+ -- Foreign-imported things don't neeed zonking etc
+ -- They are rather like constructors; we make the final
+ -- Global Id right away.
in
- tcCheckFIType sig_ty arg_tys res_ty imp_decl `thenNF_Tc_`
- returnTc (id, ForeignImport id undefined imp_decl isDeprec src_loc)
+ tcCheckFIType sig_ty arg_tys res_ty imp_decl `thenM_`
+ -- can't use sig_ty here because it :: Type and we need HsType Id
+ -- hence the undefined
+ returnM (id, ForeignImport id undefined imp_decl isDeprec src_loc)
\end{code}
= checkCg checkDotNet
tcCheckFIType sig_ty arg_tys res_ty (CImport _ _ _ _ (CLabel _))
- = checkCg checkCOrAsm `thenNF_Tc_`
+ = checkCg checkCOrAsm `thenM_`
check (isFFILabelTy sig_ty) (illegalForeignTyErr empty sig_ty)
-tcCheckFIType sig_ty arg_tys res_ty (CImport _ _ _ _ CWrapper)
+tcCheckFIType sig_ty arg_tys res_ty (CImport cconv _ _ _ CWrapper)
= -- Foreign wrapper (former f.e.d.)
-- The type must be of the form ft -> IO (FunPtr ft), where ft is a
-- valid foreign type. For legacy reasons ft -> IO (Ptr ft) as well
-- as ft -> IO Addr is accepted, too. The use of the latter two forms
-- is DEPRECATED, though.
- checkCg checkCOrAsm `thenNF_Tc_`
+ checkCg (if cconv == StdCallConv
+ then checkC
+ else checkCOrAsmOrInterp) `thenM_`
+ -- the native code gen can't handle foreign import stdcall "wrapper",
+ -- because it doesn't emit the '@n' suffix on the label of the
+ -- C stub function. Infrastructure changes are required to make this
+ -- happen; MachLabel will need to carry around information about
+ -- the arity of the foreign call.
case arg_tys of
- [arg1_ty] -> checkForeignArgs isFFIExternalTy arg1_tys `thenNF_Tc_`
- checkForeignRes nonIOok isFFIExportResultTy res1_ty `thenNF_Tc_`
- checkForeignRes mustBeIO isFFIDynResultTy res_ty `thenNF_Tc_`
+ [arg1_ty] -> checkForeignArgs isFFIExternalTy arg1_tys `thenM_`
+ checkForeignRes nonIOok isFFIExportResultTy res1_ty `thenM_`
+ checkForeignRes mustBeIO isFFIDynResultTy res_ty `thenM_`
checkFEDArgs arg1_tys
where
(arg1_tys, res1_ty) = tcSplitFunTys arg1_ty
tcCheckFIType sig_ty arg_tys res_ty (CImport _ safety _ _ (CFunction target))
| isDynamicTarget target -- Foreign import dynamic
- = checkCg checkCOrAsmOrInterp `thenNF_Tc_`
+ = checkCg checkCOrAsmOrInterp `thenM_`
case arg_tys of -- The first arg must be Ptr, FunPtr, or Addr
[] -> check False (illegalForeignTyErr empty sig_ty)
- (arg1_ty:arg_tys) -> getDOptsTc `thenNF_Tc` \ dflags ->
+ (arg1_ty:arg_tys) -> getDOpts `thenM` \ dflags ->
check (isFFIDynArgumentTy arg1_ty)
- (illegalForeignTyErr argument arg1_ty) `thenNF_Tc_`
- checkForeignArgs (isFFIArgumentTy dflags safety) arg_tys `thenNF_Tc_`
+ (illegalForeignTyErr argument arg1_ty) `thenM_`
+ checkForeignArgs (isFFIArgumentTy dflags safety) arg_tys `thenM_`
checkForeignRes nonIOok (isFFIImportResultTy dflags) res_ty
| otherwise -- Normal foreign import
= checkCg (if isCasmTarget target
- then checkC else checkCOrAsmOrDotNetOrInterp) `thenNF_Tc_`
- checkCTarget target `thenNF_Tc_`
- getDOptsTc `thenNF_Tc` \ dflags ->
- checkForeignArgs (isFFIArgumentTy dflags safety) arg_tys `thenNF_Tc_`
+ then checkC else checkCOrAsmOrDotNetOrInterp) `thenM_`
+ checkCTarget target `thenM_`
+ getDOpts `thenM` \ dflags ->
+ checkForeignArgs (isFFIArgumentTy dflags safety) arg_tys `thenM_`
checkForeignRes nonIOok (isFFIImportResultTy dflags) res_ty
-- This makes a convenient place to check
-- that the C identifier is valid for C
checkCTarget (StaticTarget str)
- = checkCg checkCOrAsmOrDotNetOrInterp `thenNF_Tc_`
+ = checkCg checkCOrAsmOrDotNetOrInterp `thenM_`
check (isCLabelString str) (badCName str)
checkCTarget (CasmTarget _)
= checkCg checkC
\end{code}
-On a SPARC, with foreign export dynamic, due to a giant hack when building
-adjustor thunks, we only allow 16 bytes of arguments!
-
-So for example, args (Int,Double,Int) would be OK (1+2+1)
-as would (Int,Int,Int,Int) (1+1+1+1) but not (Int,Double,Double) (1+2+2).
-
-On an Alpha, due to a similar hack, we only allow 4 integer arguments with
+On an Alpha, with foreign export dynamic, due to a giant hack when
+building adjustor thunks, we only allow 4 integer arguments with
foreign export dynamic (i.e., 32 bytes of arguments after padding each
argument to a quadword, excluding floating-point arguments).
\begin{code}
#include "nativeGen/NCG.h"
-#if sparc_TARGET_ARCH
-checkFEDArgs arg_tys
- = check (words_of_args <= 4) err
- where
- words_of_args = sum (map (getPrimRepSize . typePrimRep) arg_tys)
- err = ptext SLIT("On SPARC, I can only handle 4 words of arguments to foreign export dynamic")
-#else
#if alpha_TARGET_ARCH
checkFEDArgs arg_tys
= check (integral_args <= 4) err
map typePrimRep arg_tys)
err = ptext SLIT("On Alpha, I can only handle 4 non-floating-point arguments to foreign export dynamic")
#else
-checkFEDArgs arg_tys = returnNF_Tc ()
-#endif
+checkFEDArgs arg_tys = returnM ()
#endif
\end{code}
%************************************************************************
\begin{code}
-tcForeignExports :: [RenamedHsDecl] -> TcM (LIE, TcMonoBinds, [TcForeignExportDecl])
+tcForeignExports :: [RenamedHsDecl]
+ -> TcM (TcMonoBinds, [TcForeignDecl])
tcForeignExports decls =
- foldlTc combine (emptyLIE, EmptyMonoBinds, [])
+ foldlM combine (EmptyMonoBinds, [])
[foreign_decl | ForD foreign_decl <- decls, isForeignExport foreign_decl]
where
- combine (lie, binds, fs) fe =
- tcFExport fe `thenTc ` \ (a_lie, b, f) ->
- returnTc (lie `plusLIE` a_lie, b `AndMonoBinds` binds, f:fs)
+ combine (binds, fs) fe =
+ tcFExport fe `thenM ` \ (b, f) ->
+ returnM (b `AndMonoBinds` binds, f:fs)
-tcFExport :: RenamedForeignDecl -> TcM (LIE, TcMonoBinds, TcForeignExportDecl)
+tcFExport :: RenamedForeignDecl -> TcM (TcMonoBinds, TcForeignDecl)
tcFExport fo@(ForeignExport nm hs_ty spec isDeprec src_loc) =
- tcAddSrcLoc src_loc $
- tcAddErrCtxt (foreignDeclCtxt fo) $
+ addSrcLoc src_loc $
+ addErrCtxt (foreignDeclCtxt fo) $
- tcHsSigType (ForSigCtxt nm) hs_ty `thenTc` \ sig_ty ->
- tcExpr (HsVar nm) sig_ty `thenTc` \ (rhs, lie) ->
+ tcHsSigType (ForSigCtxt nm) hs_ty `thenM` \ sig_ty ->
+ tcExpr (HsVar nm) sig_ty `thenM` \ rhs ->
- tcCheckFEType sig_ty spec `thenTc_`
+ tcCheckFEType sig_ty spec `thenM_`
-- we're exporting a function, but at a type possibly more
-- constrained than its declared/inferred type. Hence the need
-- to create a local binding which will call the exported function
-- at a particular type (and, maybe, overloading).
- newLocalName nm `thenNF_Tc` \ id_name ->
+
+ newUnique `thenM` \ uniq ->
+ getModule `thenM` \ mod ->
let
- id = mkLocalId id_name sig_ty
+ gnm = mkExternalName uniq mod (mkForeignExportOcc (getOccName nm)) src_loc
+ id = setIdLocalExported (mkLocalId gnm sig_ty)
bind = VarMonoBind id rhs
in
- returnTc (lie, bind, ForeignExport id undefined spec isDeprec src_loc)
+ returnM (bind, ForeignExport id undefined spec isDeprec src_loc)
\end{code}
------------ Checking argument types for foreign export ----------------------
\begin{code}
tcCheckFEType sig_ty (CExport (CExportStatic str _))
- = check (isCLabelString str) (badCName str) `thenNF_Tc_`
- checkForeignArgs isFFIExternalTy arg_tys `thenNF_Tc_`
+ = check (isCLabelString str) (badCName str) `thenM_`
+ checkForeignArgs isFFIExternalTy arg_tys `thenM_`
checkForeignRes nonIOok isFFIExportResultTy res_ty
where
-- Drop the foralls before inspecting n
\begin{code}
------------ Checking argument types for foreign import ----------------------
-checkForeignArgs :: (Type -> Bool) -> [Type] -> NF_TcM ()
+checkForeignArgs :: (Type -> Bool) -> [Type] -> TcM ()
checkForeignArgs pred tys
- = mapNF_Tc go tys `thenNF_Tc_`
- returnNF_Tc ()
+ = mappM go tys `thenM_`
+ returnM ()
where
- go ty = check (pred ty) (illegalForeignTyErr argument ty) `thenNF_Tc_`
- warnTc (isForeignPtrTy ty) foreignPtrWarn
- --
- foreignPtrWarn =
- text "`ForeignPtr' as argument type in a foreign import is deprecated"
+ go ty = check (pred ty) (illegalForeignTyErr argument ty)
------------ Checking result types for foreign calls ----------------------
-- Check that the type has the form
-- (IO t) or (t) , and that t satisfies the given predicate.
--
-checkForeignRes :: Bool -> (Type -> Bool) -> Type -> NF_TcM ()
+checkForeignRes :: Bool -> (Type -> Bool) -> Type -> TcM ()
nonIOok = True
mustBeIO = False
= case tcSplitTyConApp_maybe ty of
Just (io, [res_ty])
| io `hasKey` ioTyConKey && pred_res_ty res_ty
- -> returnNF_Tc ()
+ -> returnM ()
_
-> check (non_io_result_ok && pred_res_ty ty)
(illegalForeignTyErr result ty)
\end{code}
-\begin{code}
+\begin{code}
checkDotNet HscILX = Nothing
checkDotNet other = Just (text "requires .NET code generation (-filx)")
= Just (text "requires interpreted, C, native or .NET ILX code generation")
checkCg check
- = getDOptsTc `thenNF_Tc` \ dflags ->
+ = getDOpts `thenM` \ dflags ->
let hscLang = dopt_HscLang dflags in
case hscLang of
- HscNothing -> returnNF_Tc ()
+ HscNothing -> returnM ()
otherwise ->
case check hscLang of
- Nothing -> returnNF_Tc ()
+ Nothing -> returnM ()
Just err -> addErrTc (text "Illegal foreign declaration:" <+> err)
\end{code}
Warnings
\begin{code}
-check :: Bool -> Message -> NF_TcM ()
-check True _ = returnTc ()
+check :: Bool -> Message -> TcM ()
+check True _ = returnM ()
check _ the_err = addErrTc the_err
illegalForeignTyErr arg_or_res ty
projects / ghc-hetmet.git / blobdiff