X-Git-Url: https://git.stderr.nl/gitweb?a=blobdiff_plain;f=c%CE%BBash%2FCLasH%2FVHDL%2FGenerate.hs;h=827315cfd70ee9f7e6aa2ca9c5c1671ce200477b;hb=e9fdb64bf7174b8608d9b1c7004fdcbe3dd23a9c;hp=0b2cf04d6b2e171b459186607aa3530a203c7060;hpb=374a42ba3cf333ae53fa1d992620d25286641ae2;p=matthijs%2Fmaster-project%2Fc%CE%BBash.git

diff --git "a/c\316\273ash/CLasH/VHDL/Generate.hs" "b/c\316\273ash/CLasH/VHDL/Generate.hs"
index 0b2cf04..827315c 100644
--- "a/c\316\273ash/CLasH/VHDL/Generate.hs"
+++ "b/c\316\273ash/CLasH/VHDL/Generate.hs"
@@ -199,11 +199,24 @@ mkConcSm (bndr, expr) = error $ "\nVHDL.mkConcSM: Unsupported binding in let exp
 -- | A function to wrap a builder-like function that expects its arguments to
 -- be expressions.
 genExprArgs wrap dst func args = do
-  args' <- eitherCoreOrExprArgs args
+  args' <- argsToVHDLExprs args
   wrap dst func args'
 
-eitherCoreOrExprArgs :: [Either CoreSyn.CoreExpr AST.Expr] -> TranslatorSession [AST.Expr]
-eitherCoreOrExprArgs args = mapM (Either.either ((MonadState.lift tsType) . varToVHDLExpr . exprToVar) return) args
+-- | Turn the all lefts into VHDL Expressions.
+argsToVHDLExprs :: [Either CoreSyn.CoreExpr AST.Expr] -> TranslatorSession [AST.Expr]
+argsToVHDLExprs = catMaybesM . (mapM argToVHDLExpr)
+
+argToVHDLExpr :: Either CoreSyn.CoreExpr AST.Expr -> TranslatorSession (Maybe AST.Expr)
+argToVHDLExpr (Left expr) = MonadState.lift tsType $ do
+  let errmsg = "Generate.argToVHDLExpr: Using non-representable type? Should not happen!"
+  ty_maybe <- vhdl_ty errmsg expr
+  case ty_maybe of
+    Just _ -> do
+      vhdl_expr <- varToVHDLExpr $ exprToVar expr
+      return $ Just vhdl_expr
+    Nothing -> return $ Nothing
+
+argToVHDLExpr (Right expr) = return $ Just expr
 
 -- A function to wrap a builder-like function that generates no component
 -- instantiations
@@ -773,7 +786,7 @@ genApplication dst f args = do
           -- Local binder that references a top level binding.  Generate a
           -- component instantiation.
           signature <- getEntity f
-          args' <- eitherCoreOrExprArgs args
+          args' <- argsToVHDLExprs args
           let entity_id = ent_id signature
           -- TODO: Using show here isn't really pretty, but we'll need some
           -- unique-ish value...
@@ -794,7 +807,7 @@ genApplication dst f args = do
           Left bndr -> do
             -- We have the bndr, so we can get at the type
             labels <- MonadState.lift tsType $ getFieldLabels (Var.varType bndr)
-            args' <- eitherCoreOrExprArgs args
+            args' <- argsToVHDLExprs args
             return $ (zipWith mkassign labels $ args', [])
             where
               mkassign :: AST.VHDLId -> AST.Expr -> AST.ConcSm