* hacks.py: Added make_unbound_method to allow general function to participate

as hacked class methods.

hacks.py

@@ -1,5 +1,5 @@
 #
-# $Id: hacks.py,v 1.1 2011-06-03 21:31:59 wirawan Exp $
+# $Id: hacks.py,v 1.2 2011-06-08 15:49:04 wirawan Exp $
 #
 # Created: 20110603
 # Wirawan Purwanto
@@ -11,7 +11,21 @@
 import sys
 import new
 
-def make_unbound_instance_method(method):
+def make_unbound_method(method):
   """Generates an unbound instance method from a possibly bound
   instance method."""
   return new.instancemethod(method.im_func, None, method.im_class)
+
+def make_unbound_method(method):
+  """Generates an unbound instance method from a possibly bound
+  instance method, or even user-defined function.
+  This is useful for injecting external, completely unrelated function
+  as an instance procedure into a class, without having to subclass
+  the whole thing.
+  CAVEAT: This is a haram trick. Know what you are doing."""
+  try:
+    return new.instancemethod(method.im_func, None, method.im_class)
+  except AttributeError:
+    # Assume this is a static method or user-defined external method
+    # injected into this class.
+    return method