[2518] Add Python bindings for NameParserException hierarchy

src/lib/dns/python/name_python.cc

@@ -537,6 +537,7 @@ namespace python {
 // Initialization and addition of these go in the module init at the
 // end
 //
+PyObject* po_NameParserException;
 PyObject* po_EmptyLabel;
 PyObject* po_TooLongName;
 PyObject* po_TooLongLabel;

src/lib/dns/python/name_python.h

@@ -23,6 +23,7 @@ class Name;
 
 namespace python {
 
+extern PyObject* po_NameParserException;
 extern PyObject* po_EmptyLabel;
 extern PyObject* po_TooLongName;
 extern PyObject* po_TooLongLabel;

src/lib/dns/python/pydnspp.cc

@@ -243,23 +243,33 @@ initModulePart_Name(PyObject* mod) {
 
     // Add the exceptions to the module
     try {
-        po_EmptyLabel = PyErr_NewException("pydnspp.EmptyLabel", NULL, NULL);
+        po_NameParserException =
+            PyErr_NewException("pydnspp.NameParserException", NULL, NULL);
+        PyObjectContainer(po_NameParserException)
+            .installToModule(mod, "NameParserException");
+
+        po_EmptyLabel = PyErr_NewException("pydnspp.EmptyLabel",
+                                           po_NameParserException, NULL);
         PyObjectContainer(po_EmptyLabel).installToModule(mod, "EmptyLabel");
 
-        po_TooLongName = PyErr_NewException("pydnspp.TooLongName", NULL, NULL);
+        po_TooLongName = PyErr_NewException("pydnspp.TooLongName",
+                                            po_NameParserException, NULL);
         PyObjectContainer(po_TooLongName).installToModule(mod, "TooLongName");
 
-        po_TooLongLabel = PyErr_NewException("pydnspp.TooLongLabel", NULL, NULL);
+        po_TooLongLabel = PyErr_NewException("pydnspp.TooLongLabel",
+                                             po_NameParserException, NULL);
         PyObjectContainer(po_TooLongLabel).installToModule(mod, "TooLongLabel");
 
-        po_BadLabelType = PyErr_NewException("pydnspp.BadLabelType", NULL, NULL);
+        po_BadLabelType = PyErr_NewException("pydnspp.BadLabelType",
+                                             po_NameParserException, NULL);
         PyObjectContainer(po_BadLabelType).installToModule(mod, "BadLabelType");
 
-        po_BadEscape = PyErr_NewException("pydnspp.BadEscape", NULL, NULL);
+        po_BadEscape = PyErr_NewException("pydnspp.BadEscape",
+                                          po_NameParserException, NULL);
         PyObjectContainer(po_BadEscape).installToModule(mod, "BadEscape");
 
-        po_IncompleteName = PyErr_NewException("pydnspp.IncompleteName", NULL,
-                                               NULL);
+        po_IncompleteName = PyErr_NewException("pydnspp.IncompleteName",
+                                               po_NameParserException, NULL);
         PyObjectContainer(po_IncompleteName).installToModule(mod, "IncompleteName");
 
         po_InvalidBufferPosition =

src/lib/dns/python/tests/name_python_test.py

@@ -97,6 +97,14 @@ class NameTest(unittest.TestCase):
         self.assertRaises(DNSMessageFORMERR, Name, b, 0)
         self.assertRaises(IndexError, Name, b, -1)
 
+    def test_exception_hierarchy(self):
+        self.assertTrue(isinstance(EmptyLabel(), NameParserException))
+        self.assertTrue(isinstance(TooLongLabel(), NameParserException))
+        self.assertTrue(isinstance(BadLabelType(), NameParserException))
+        self.assertTrue(isinstance(BadEscape(), NameParserException))
+        self.assertTrue(isinstance(TooLongName(), NameParserException))
+        self.assertTrue(isinstance(IncompleteName(), NameParserException))
+
     def test_at(self):
         self.assertEqual(7, self.name1.at(0))
         self.assertEqual(101, self.name1.at(1))