Remove old 'foreign import dotnet' code

[ghc-hetmet.git] / compiler / deSugar / DsCCall.lhs

diff --git a/compiler/deSugar/DsCCall.lhs b/compiler/deSugar/DsCCall.lhs
index 27dff94..0dd29c9 100644 (file)
--- a/compiler/deSugar/DsCCall.lhs
+++ b/compiler/deSugar/DsCCall.lhs
@@ -88,7 +88,7 @@ dsCCall :: CLabelString       -- C routine to invoke
 
 dsCCall lbl args may_gc result_ty
   = do (unboxed_args, arg_wrappers) <- mapAndUnzipM unboxArg args
-       (ccall_result_ty, res_wrapper) <- boxResult id Nothing result_ty
+       (ccall_result_ty, res_wrapper) <- boxResult result_ty
        uniq <- newUnique
        let
            target = StaticTarget lbl
@@ -231,10 +231,7 @@ unboxArg arg
 
 
 \begin{code}
-boxResult :: ((Maybe Type, CoreExpr -> CoreExpr)
-                -> (Maybe Type, CoreExpr -> CoreExpr))
-         -> Maybe Id
-         -> Type
+boxResult :: Type
          -> DsM (Type, CoreExpr -> CoreExpr)
 
 -- Takes the result of the user-level ccall: 
@@ -247,11 +244,8 @@ boxResult :: ((Maybe Type, CoreExpr -> CoreExpr)
 -- where t' is the unwrapped form of t.  If t is simply (), then
 -- the result type will be 
 --     State# RealWorld -> (# State# RealWorld #)
---
--- The gruesome 'augment' and 'mbTopCon' are to do with .NET foreign calls
--- It looks a mess: I wonder if it could be refactored.
 
-boxResult augment mbTopCon result_ty
+boxResult result_ty
   | Just (io_tycon, io_res_ty, co) <- tcSplitIOType_maybe result_ty
        -- isIOType_maybe handles the case where the type is a 
        -- simple wrapping of IO.  E.g.
@@ -261,9 +255,8 @@ boxResult augment mbTopCon result_ty
        -- another case, and a coercion.)
        -- The result is IO t, so wrap the result in an IO constructor
   = do { res <- resultWrapper io_res_ty
-       ; let aug_res = augment res
-             extra_result_tys 
-               = case aug_res of
+       ; let extra_result_tys 
+               = case res of
                     (Just ty,_) 
                       | isUnboxedTupleType ty 
                       -> let (Just (_, ls)) = splitTyConApp_maybe ty in tail ls
@@ -274,11 +267,11 @@ boxResult augment mbTopCon result_ty
                           (map Type (realWorldStatePrimTy : io_res_ty : extra_result_tys)
                              ++ (state : anss)) 
 
-       ; (ccall_res_ty, the_alt) <- mk_alt return_result aug_res
+       ; (ccall_res_ty, the_alt) <- mk_alt return_result res
 
        ; state_id <- newSysLocalDs realWorldStatePrimTy
        ; let io_data_con = head (tyConDataCons io_tycon)
-             toIOCon     = mbTopCon `orElse` dataConWrapId io_data_con
+             toIOCon     = dataConWrapId io_data_con
 
              wrap the_call = mkCoerceI (mkSymCoI co) $
                              mkApps (Var toIOCon)
@@ -292,11 +285,11 @@ boxResult augment mbTopCon result_ty
 
        ; return (realWorldStatePrimTy `mkFunTy` ccall_res_ty, wrap) }
 
-boxResult augment _mbTopCon result_ty
+boxResult result_ty
   = do -- It isn't IO, so do unsafePerformIO
        -- It's not conveniently available, so we inline it
        res <- resultWrapper result_ty
-       (ccall_res_ty, the_alt) <- mk_alt return_result (augment res)
+       (ccall_res_ty, the_alt) <- mk_alt return_result res
        let
            wrap = \ the_call -> mkWildCase (App the_call (Var realWorldPrimId)) 
                                           ccall_res_ty