From 29e5f5aa12775bdc6118b9459e2732ff1327e191 Mon Sep 17 00:00:00 2001
From: David Malcolm <dmalcolm@redhat.com>
Date: Thu, 18 Feb 2010 23:55:01 -0500
Subject: Add support for the "None" singleton

---
 libpython.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/libpython.py b/libpython.py
index da19554..c045fa9 100644
--- a/libpython.py
+++ b/libpython.py
@@ -186,6 +186,7 @@ class PyObjectPtr(object):
                     'instance': PyInstanceObjectPtr,
                     'list': PyListObjectPtr,
                     'long': PyLongObjectPtr,
+                    'NoneType': PyNoneStructPtr,
                     'tuple': PyTupleObjectPtr,
                     'frame': PyFrameObjectPtr,
                     'unicode': PyUnicodeObjectPtr,
@@ -355,6 +356,15 @@ class PyLongObjectPtr(PyObjectPtr):
             result = -result
         return result
 
+class PyNoneStructPtr(PyObjectPtr):
+    """
+    Class wrapping a gdb.Value that's a PyObject* pointing to the
+    singleton (we hope) _Py_NoneStruct with ob_type PyNone_Type
+    """
+    _typename = 'PyObject'
+    def proxyval(self):
+        return None
+
 class PyFrameObjectPtr(PyObjectPtr):
     _typename = 'PyFrameObject'
     def __str__(self):
-- 
cgit