Let vhld_ty handle free tyvars gracefully.

[matthijs/master-project/cλash.git] / cλash / CLasH / VHDL / VHDLTools.hs

diff --git a/cλash/CLasH/VHDL/VHDLTools.hs b/cλash/CLasH/VHDL/VHDLTools.hs
index 4c41d8fab2221de65114f68a8c62ee62eaf2d674..39506f8b5fd571c3f40c63abdb1f7b7036922bfd 100644 (file)
--- a/cλash/CLasH/VHDL/VHDLTools.hs
+++ b/cλash/CLasH/VHDL/VHDLTools.hs
@@ -5,6 +5,7 @@ module CLasH.VHDL.VHDLTools where
 import qualified Maybe
 import qualified Data.Either as Either
 import qualified Data.List as List
+import qualified Data.Char as Char
 import qualified Data.Map as Map
 import qualified Control.Monad as Monad
 import qualified Control.Arrow as Arrow
@@ -183,7 +184,10 @@ dataconToVHDLExpr dc = AST.PrimLit lit
 varToVHDLId ::
   CoreSyn.CoreBndr
   -> AST.VHDLId
-varToVHDLId = mkVHDLExtId . varToString
+varToVHDLId var = mkVHDLExtId $ (varToString var ++ varToStringUniq var ++ (show $ lowers $ varToStringUniq var))
+  where
+    lowers :: String -> Int
+    lowers xs = length [x | x <- xs, Char.isLower x]
 
 -- Creates a VHDL Name from a binder
 varToVHDLName ::
@@ -285,7 +289,8 @@ vhdl_ty_either tything =
     Just ty -> vhdl_ty_either' ty
 
 vhdl_ty_either' :: Type.Type -> TypeSession (Either String (Maybe AST.TypeMark))
-vhdl_ty_either' ty = do
+vhdl_ty_either' ty | ty_has_free_tyvars ty = return $ Left $ "VHDLTools.vhdl_ty_either': Cannot create type: type has free type variables: " ++ pprString ty
+                   | otherwise = do
   typemap <- getA tsTypes
   htype_either <- mkHType ty
   case htype_either of