mirror of https://github.com/morpheus65535/bazarr
28 lines
651 B
Python
28 lines
651 B
Python
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import sys
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import inspect
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class _SkippedBlock(Exception):
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pass
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class maybe(object):
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def __init__(self, predicate):
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self.predicate = predicate
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def __empty_fn(self, *args, **kwargs):
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return None
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def __enter__(self):
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if not self.predicate():
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sys.settrace(self.__empty_fn)
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frame = inspect.currentframe(1)
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frame.f_trace = self.__trace
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def __trace(self, *args, **kwargs):
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raise _SkippedBlock()
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def __exit__(self, type, value, traceback):
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if isinstance(value, _SkippedBlock):
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sys.settrace(None)
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return True
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return False
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