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# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Modified from espnet(https://github.com/espnet/espnet)
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"""Repeat the same layer definition."""
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import paddle
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class MultiSequential(paddle.nn.Sequential):
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"""Multi-input multi-output paddle.nn.Sequential."""
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def forward(self, *args):
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"""Repeat."""
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for m in self:
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args = m(*args)
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return args
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def repeat(N, fn):
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"""Repeat module N times.
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Parameters
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----------
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N : int
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Number of repeat time.
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fn : Callable
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Function to generate module.
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Returns
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----------
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MultiSequential
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Repeated model instance.
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"""
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return MultiSequential(*[fn(n) for n in range(N)])
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