38 lines
1.1 KiB
Python
38 lines
1.1 KiB
Python
# Copyright 2008-2017 Free Software Foundation, Inc.
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# This file is part of GNU Radio
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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#
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class TemplateArg(str):
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"""
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A cheetah template argument created from a param.
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The str of this class evaluates to the param's to code method.
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The use of this class as a dictionary (enum only) will reveal the enum opts.
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The __call__ or () method can return the param evaluated to a raw python data type.
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"""
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def __new__(cls, param):
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value = param.to_code()
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instance = str.__new__(cls, value)
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setattr(instance, '_param', param)
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return instance
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def __getitem__(self, item):
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return str(self._param.get_opt(item)) if self._param.is_enum() else NotImplemented
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def __getattr__(self, item):
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if not self._param.is_enum():
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raise AttributeError()
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try:
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return str(self._param.get_opt(item))
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except KeyError:
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raise AttributeError()
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def __str__(self):
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return str(self._param.to_code())
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def __call__(self):
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return self._param.get_evaluated()
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