# -*- coding: utf-8 -*-
#--------------------------------
#$Date$
#$Author$
#$Revision$
#--------------------------------
#Copyright (C) 2007, 2008 Alexander Koshelev (daevaorn@gmail.com)

def attribute_cache( func ):
    cache_name = "_%s" % func.__name__.lower()
    def _decorator( self, *args, **kwargs ):
        if not hasattr( self, cache_name ):
            setattr( self, cache_name, func( self, *args, **kwargs ) )
        return getattr( self, cache_name )