Enabling special mode (hidden) for generating diodes for soft connections

src/drc/drc/built-in-macros/_drc_engine.rb

@@ -2352,8 +2352,10 @@ CODE
       top_level
       ignore_extraction_errors
       extract_devices
-      l2n_data
       netlist
+      l2n_data
+      _l2n_object
+      _make_soft_connection_diodes
     ).each do |f|
       eval <<"CODE"
         def #{f}(*args)

src/drc/drc/built-in-macros/_drc_netter.rb

@@ -753,6 +753,14 @@ module DRC
       @l2n && @l2n.is_extracted? && self.l2n_data
     end
 
+    def _l2n_object
+      @l2n
+    end
+
+    def _make_soft_connection_diodes(f)
+      @l2n.make_soft_connection_diodes = f
+    end
+
   private
 
     def cleanup