#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
#
# 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.


class DefaultInitializerContext(object):
    """
        egs:
        with DefaultInitializerContext("kaiming_uniform"):
            code for setup_model
    """

    def __init__(self, init_type=None):
        self.init_type = init_type

    def __enter__(self):
        if self.init_type is None:
            return
        else:
            from paddlespeech.s2t.modules import align
            align.global_init_type = self.init_type
            return

    def __exit__(self, exc_type, exc_val, exc_tb):
        from paddlespeech.s2t.modules import align
        align.global_init_type = None