Add underflow property and checker if referenced properties exist

srdl2sv/components/component.py

@@ -1,4 +1,5 @@
 import re
+import sys
 from itertools import chain
 from typing import NamedTuple
 from systemrdl import node
@@ -208,6 +209,15 @@ class Component():
             name.append('_')
             name.append(obj.name)
 
+            # This is a property. Check if the original field actually has this property
+            if not obj.node.get_property(obj.name):
+                self.logger.fatal("Reference to the property '{}' of instance '{}' found. "
+                                  "This instance does hold the reference property! Please "
+                                  "fix this if you want me to do my job properly."
+                    .format(obj.name, obj.node.get_path()))
+
+                sys.exit(1)
+
         name.append(split_name[1])
 
         return ''.join(name)

srdl2sv/components/field.py

@@ -467,11 +467,15 @@ class Field(Component):
                         )
                     )
 
-                    if decr.width > 0:
-                        self.logger.error("Decrement signal '{}' is wider than 1-bit. "\
-                                          "This might result in unwanted behavior and "\
-                                          "will also cause Lint-errors.".format(
-                                              decr.inst_name))
+                    try:
+                        if decr.width > 0:
+                            self.logger.error("Decrement signal '{}' is wider than 1-bit. "\
+                                              "This might result in unwanted behavior and "\
+                                              "will also cause Lint-errors.".format(
+                                                  decr.inst_name))
+                    except AttributeError:
+                        # 'PropRef_underflow' object has no attribute 'width'
+                        pass
             else:
                 # Tie signal to 0
                 self.rtl_footer.append(