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52 lines
1.5 KiB
52 lines
1.5 KiB
1 year ago
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# coding: utf-8
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from __future__ import print_function, absolute_import, division, unicode_literals
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"""
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You cannot subclass bool, and this is necessary for round-tripping anchored
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bool values (and also if you want to preserve the original way of writing)
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bool.__bases__ is type 'int', so that is what is used as the basis for ScalarBoolean as well.
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You can use these in an if statement, but not when testing equivalence
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"""
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from .anchor import Anchor
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if False: # MYPY
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from typing import Text, Any, Dict, List # NOQA
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__all__ = ['ScalarBoolean']
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# no need for no_limit_int -> int
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class ScalarBoolean(int):
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def __new__(cls, *args, **kw):
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# type: (Any, Any, Any) -> Any
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anchor = kw.pop('anchor', None) # type: ignore
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b = int.__new__(cls, *args, **kw) # type: ignore
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if anchor is not None:
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b.yaml_set_anchor(anchor, always_dump=True)
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return b
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@property
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def anchor(self):
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# type: () -> Any
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if not hasattr(self, Anchor.attrib):
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setattr(self, Anchor.attrib, Anchor())
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return getattr(self, Anchor.attrib)
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def yaml_anchor(self, any=False):
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# type: (bool) -> Any
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if not hasattr(self, Anchor.attrib):
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return None
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if any or self.anchor.always_dump:
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return self.anchor
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return None
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def yaml_set_anchor(self, value, always_dump=False):
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# type: (Any, bool) -> None
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self.anchor.value = value
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self.anchor.always_dump = always_dump
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