def __init__(self, format=0):
sax.ContentHandler.__init__(self)
self.format = format
self.current_ion = None
self.tree_builder = Tree_Builder()
self.dict_stack = []
self.list_stack = []
self.property_stack = []
self.tag_stack = []
self.current_depth = 0
self.current_dict = None
self.current_list = None
self.current_property = None
