Added new Warning classes.

Author: Paebbels

pyVHDLModel/Exception.py

@@ -36,8 +36,29 @@
 message in english, each exception object contains one or multiple references to the exception's context.
 """
 from pyTooling.Decorators import export, readonly
+from pyTooling.Warning    import Warning, CriticalWarning
 
-from pyVHDLModel.Symbol import Symbol
+from pyVHDLModel.Symbol   import Symbol
+
+
+@export
+class VHDLModelWarning(Warning):
+	pass
+
+
+@export
+class NotImplementedWarning(VHDLModelWarning):
+	pass
+
+
+@export
+class VHDLModelCriticalWarning(Warning):
+	pass
+
+
+@export
+class BlackboxWarning(VHDLModelCriticalWarning):
+	pass
 
 
 @export