[Zope-Checkins] CVS: Zope3/lib/python/Zope/Proxy - ContextWrapper.py:1.3 IContextWrapper.py:1.3

[Steve Alexander]

Update of /cvs-repository/Zope3/lib/python/Zope/Proxy
In directory cvs.zope.org:/tmp/cvs-serv22871/lib/python/Zope/Proxy

Modified Files:
	ContextWrapper.py IContextWrapper.py 
Log Message:
Added a set of convenience functions that you can import from
Zope.App.Traversing.

Fixed a few typos in the ContextWrapper docstrings, and also added
an isWrapper method to Zope/Proxy/IContextWrapper, mainly so that
I can raise nice errors if the convenience functions are passed
an unwrapped object, rather than returning objs or Nones or []s and 
having programs fail at tenuously related other places.


=== Zope3/lib/python/Zope/Proxy/ContextWrapper.py 1.2 => 1.3 ===
     return getcontext(_ob)
     
+def isWrapper(_ob):
+    if type(_ob) is Proxy:
+        _ob = getObject(_ob)
+    return type(_ob) in wrapperTypes 
 
 class ContainmentIterator:
 


=== Zope3/lib/python/Zope/Proxy/IContextWrapper.py 1.2 => 1.3 ===
         """Get the object's context, as computed from a context wrapper
         """
+        
+    def isWrapper(ob):
+        """Returns truth iff the object is wrapped in a context wrapper
+        """
 
     def ContainmentIterator(ob):
         """Get an iterator for the object's containment chain