# HG changeset patch
# User paulb
# Date 1191281220 0
# Node ID 20d44607697b38b65ef0da543427c42d7dcb3c5b
# Parent  35c2b7e260c9223f673c10a52190d6058d26dcbc
[project @ 2007-10-01 23:27:00 by paulb]
Added safety checks for nodes.

diff -r 35c2b7e260c9 -r 20d44607697b libxml2dom/macrolib/macrolib.py
--- a/libxml2dom/macrolib/macrolib.py	Mon Oct 01 23:26:37 2007 +0000
+++ b/libxml2dom/macrolib/macrolib.py	Mon Oct 01 23:27:00 2007 +0000
@@ -258,19 +258,19 @@
     return to_unicode(libxml2mod.name(node))
 
 def Node_parentNode(node):
-    if libxml2mod.type(node) == "document_xml":
+    if node is None or libxml2mod.type(node) == "document_xml":
         return None
     else:
         return libxml2mod.parent(node)
 
 def Node_previousSibling(node):
-    if libxml2mod.prev(node) is not None:
+    if node is not None and libxml2mod.prev(node) is not None:
         return libxml2mod.prev(node)
     else:
         return None
 
 def Node_nextSibling(node):
-    if libxml2mod.next(node) is not None:
+    if node is not None and libxml2mod.next(node) is not None:
         return libxml2mod.next(node)
     else:
         return None