#!usr/bin/env python3
#-*- coding:utf-8 -*-
__author__ = 'yanqiong'

import copy
import weakref
from collections.abc import MutableMapping


class Entity(MutableMapping):
    def _instance_entity(self, path):
        self._path = path
        self._listener = weakref.WeakSet()

    def __setitem__(self, key, value):
        return self.__dict__.__setitem__(key, value)

    def __delitem__(self, key):
        return self.__dict__.__delitem__(key)

    def __getitem__(self, key):
        return self.__dict__.__getitem__(key)

    def __iter__(self):
        return iter({k: v for k, v in self.__dict__.items() if not k.startswith("_")})

    def __len__(self):
        return len({k: v for k, v in self.__dict__.items() if not k.startswith("_")})

    def __str__(self):
        return str({k: v for k, v in self.__dict__.items() if not k.startswith("_")})

    def __repr__(self):
        return '{}, D({})'.format(super(Entity, self).__repr__(),
                                  {k: v for k, v in self.__dict__.items() if not k.startswith("_")})

    def copy(self):
        return copy.copy(self)