6c764f1bc4
Change-Id: I38184277951e0f8decd16d98d9f3f24a7d878b63 Signed-off-by: Stephen Finucane <stephenfin@redhat.com>
36 lines
1.1 KiB
Python
36 lines
1.1 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import typing as ty
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_T = ty.TypeVar('_T')
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class Formatter(ty.Generic[_T]):
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@classmethod
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def deserialize(cls, value: ty.Any) -> _T:
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"""Return a formatted object representing the value"""
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raise NotImplementedError
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class BoolStr(Formatter[bool]):
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@classmethod
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def deserialize(cls, value: ty.Any) -> bool:
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"""Convert a boolean string to a boolean"""
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expr = str(value).lower()
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if "true" == expr:
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return True
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elif "false" == expr:
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return False
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else:
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raise ValueError(f"Unable to deserialize boolean string: {value}")
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