示例#1
0
文件: pickler.py 项目: jakesyl/cing
    def _get_flattener(self, obj):

        if util.is_primitive(obj):
            return lambda obj: obj

        list_recurse = self._list_recurse

        if util.is_list(obj):
            if self._mkref(obj):
                return list_recurse
            else:
                self._push()
                return self._getref

        # We handle tuples and sets by encoding them in a "(tuple|set)dict"
        if util.is_tuple(obj):
            if not self.unpicklable:
                return list_recurse
            return lambda obj: {tags.TUPLE: [self._flatten(v) for v in obj]}

        if util.is_set(obj):
            if not self.unpicklable:
                return list_recurse
            return lambda obj: {tags.SET: [self._flatten(v) for v in obj]}

        if util.is_dictionary(obj):
            return self._flatten_dict_obj

        if util.is_type(obj):
            return _mktyperef

        if util.is_object(obj):
            return self._ref_obj_instance

        if util.is_module_function(obj):
            return self._flatten_function

        # instance methods, lambdas, old style classes...
        self._pickle_warning(obj)
        return None
示例#2
0
文件: pickler.py 项目: jakesyl/cing
    def _flatten_dict_obj(self, obj, data=None):
        """Recursively call flatten() and return json-friendly dict
        """
        if data is None:
            data = obj.__class__()

        flatten = self._flatten_key_value_pair
        for k, v in sorted(obj.items(), key=util.itemgetter):
            flatten(k, v, data)

        # the collections.defaultdict protocol
        if hasattr(obj, 'default_factory') and callable(obj.default_factory):
            factory = obj.default_factory
            if util.is_type(factory):
                # Reference the type
                value = _mktyperef(factory)
            else:
                # Create an instance from the factory and assume that the
                # resulting instance is a suitable examplar.
                value = self._flatten(handlers.CloneFactory(factory()))
            data['default_factory'] = value

        return data