# Copyright 2020 Huawei Technologies Co., Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ============================================================================
"""
Wrap cells for networks.

Use the Wrapper to combine the loss or build the training steps.
"""
from .cell_wrapper import TrainOneStepCell, WithLossCell, WithGradCell, WithEvalCell, \
     ParameterUpdate, GetNextSingleOp, VirtualDatasetCellTriple
from .loss_scale import TrainOneStepWithLossScaleCell, DynamicLossScaleUpdateCell, FixedLossScaleUpdateCell
from .grad_reducer import DistributedGradReducer

__all__ = [
    "TrainOneStepCell",
    "WithLossCell",
    "WithGradCell",
    "WithEvalCell",
    "GetNextSingleOp",
    "TrainOneStepWithLossScaleCell",
    "DistributedGradReducer",
    "ParameterUpdate",
    "DynamicLossScaleUpdateCell",
    "FixedLossScaleUpdateCell",
    "VirtualDatasetCellTriple"
    ]