# Copyright 2017 Neural Networks and Deep Learning lab, MIPT
#
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#
# Unless required by applicable law or agreed to in writing, software
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and

import numpy as np

from deeppavlov.core.common.registry import register
from deeppavlov.core.models.component import Component

"""Takes a batch of tokens and returns the masks of corresponding length"""
def __init__(self, *args, **kwargs):
pass

@staticmethod
def __call__(tokens_batch, **kwargs):
batch_size = len(tokens_batch)
max_len = max(len(utt) for utt in tokens_batch)