import numpy as np


class Ch:
    def __setstate__(self, state):
        self.__dict__.update(state)

    @property
    def r(self):
        if "x" in self.__dict__:
            return self.__dict__["x"]
        return np.asarray(self)

    def __array__(self, dtype=None):
        array = np.asarray(self.r)
        if dtype is not None:
            array = array.astype(dtype)
        return array

    @property
    def shape(self):
        return np.asarray(self).shape

    @property
    def ndim(self):
        return np.asarray(self).ndim

    def __len__(self):
        return len(np.asarray(self))

    def __getitem__(self, item):
        return np.asarray(self)[item]

    def reshape(self, *shape):
        return np.asarray(self).reshape(*shape)