support for localparam type

src/Convert/ParamType.hs

@@ -147,22 +147,15 @@ convert files =
             where
                 Part attrs extern kw ml m p items = part
                 m' = moduleInstanceName m typeMap
-                items' = map rewriteDecl items
-                rewriteDecl :: ModuleItem -> ModuleItem
-                rewriteDecl (MIPackageItem (Decl (ParamType Parameter x _))) =
-                    MIPackageItem $ Typedef (typeMap' Map.! x) x
+                items' = map (traverseDecls rewriteDecl) items
+                rewriteDecl :: Decl -> Decl
+                rewriteDecl (ParamType Parameter x _) =
+                    ParamType Localparam x (Just $ typeMap' Map.! x)
                 rewriteDecl other = other
                 explodedTypeMap = Map.mapWithKey prepareTypeIdents typeMap
                 typeMap' = Map.map fst explodedTypeMap
                 additionalParamItems = concatMap makeAddedParams $
                     Map.toList $ Map.map snd explodedTypeMap
-                -- TODO FIXME: Typedef conversion must be made to handle
-                -- ParamTypes!
-                -----items' = map (traverseDecls rewriteDecl) items
-                -----rewriteDecl :: Decl -> Decl
-                -----rewriteDecl (ParamType Parameter x _) =
-                -----    ParamType Localparam x (Just $ typeMap Map.! x)
-                -----rewriteDecl other = other
 
         makeAddedParams :: (Identifier, IdentSet) -> [ModuleItem]
         makeAddedParams (paramName, identSet) =

src/Convert/Typedef.hs

@@ -70,6 +70,10 @@ traverseDeclM decl = do
     case decl' of
         Variable{} -> return decl'
         Param{} -> return decl'
+        ParamType Localparam x (Just t) -> do
+            t' <- traverseNestedTypesM traverseTypeM t
+            insertElem x t'
+            return $ CommentDecl $ "removed localparam type " ++ x
         ParamType{} -> return decl'
         CommentDecl{} -> return decl'
 

test/basic/localparamtype.sv

+module top;
+    localparam type T = logic;
+    initial begin
+        $display("A %0d", $bits(T));
+        begin
+            localparam type T = logic [1:0];
+            $display("B %0d", $bits(T));
+            begin
+                localparam type T = T [1:0];
+                $display("C %0d", $bits(T));
+            end
+            $display("B %0d", $bits(T));
+        end
+        $display("A %0d", $bits(T));
+    end
+endmodule

test/basic/localparamtype.v

+module top;
+    initial begin
+        $display("A %0d", 1);
+        $display("B %0d", 2);
+        $display("C %0d", 4);
+        $display("B %0d", 2);
+        $display("A %0d", 1);
+    end
+endmodule