Merge pull request #8524 from reyoung/feature/unique_name_guard
Moving unique_name to pythontonyyang-svail-patch-1
Yu Yang
7 years ago
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GitHub
commit
eebfb71d3f
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# Copyright (c) 2018 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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import unittest
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import paddle.v2.fluid as fluid
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class TestUniqueName(unittest.TestCase):
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def test_guard(self):
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with fluid.unique_name.guard():
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name_1 = fluid.unique_name.generate('')
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with fluid.unique_name.guard():
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name_2 = fluid.unique_name.generate('')
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self.assertEqual(name_1, name_2)
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with fluid.unique_name.guard("A"):
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name_1 = fluid.unique_name.generate('')
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with fluid.unique_name.guard('B'):
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name_2 = fluid.unique_name.generate('')
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self.assertNotEqual(name_1, name_2)
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def test_generate(self):
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with fluid.unique_name.guard():
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name1 = fluid.unique_name.generate('fc')
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name2 = fluid.unique_name.generate('fc')
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name3 = fluid.unique_name.generate('tmp')
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self.assertNotEqual(name1, name2)
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self.assertEqual(name1[-2:], name3[-2:])
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@ -0,0 +1,74 @@
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# Copyright (c) 2018 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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import collections
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import contextlib
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import sys
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__all__ = ['generate', 'switch', 'guard', 'UniqueNameGenerator']
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class UniqueNameGenerator(object):
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"""
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Generate unique name with prefix.
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Args:
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prefix(str): The generated name prefix. All generated name will be
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started with this prefix.
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"""
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def __init__(self, prefix=None):
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self.ids = collections.defaultdict(int)
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if prefix is None:
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prefix = ""
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self.prefix = prefix
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def __call__(self, key):
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"""
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Generate unique names with prefix
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Args:
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key(str): The key of return string.
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Returns(str): A unique string with the prefix
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"""
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tmp = self.ids[key]
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self.ids[key] += 1
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return self.prefix + "_".join([key, str(tmp)])
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generator = UniqueNameGenerator()
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def generate(key):
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return generator(key)
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def switch(new_generator=None):
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global generator
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old = generator
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if new_generator is None:
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generator = UniqueNameGenerator()
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else:
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generator = new_generator
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return old
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@contextlib.contextmanager
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def guard(new_generator=None):
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if isinstance(new_generator, basestring):
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new_generator = UniqueNameGenerator(new_generator)
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old = switch(new_generator)
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yield
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switch(old)
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