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# coding: utf-8
"""
You cannot subclass bool, and this is necessary for round-tripping anchored
bool values (and also if you want to preserve the original way of writing)
bool.__bases__ is type 'int', so that is what is used as the basis for ScalarBoolean as well.
You can use these in an if statement, but not when testing equivalence
"""
from ruamel.yaml.anchor import Anchor
if False: # MYPY
from typing import Text, Any, Dict, List # NOQA
__all__ = ['ScalarBoolean']
class ScalarBoolean(int):
def __new__(cls, *args, **kw):
# type: (Any, Any, Any) -> Any
anchor = kw.pop('anchor', None)
b = int.__new__(cls, *args, **kw)
if anchor is not None:
b.yaml_set_anchor(anchor, always_dump=True)
return b
@property
def anchor(self):
# type: () -> Any
if not hasattr(self, Anchor.attrib):
setattr(self, Anchor.attrib, Anchor())
return getattr(self, Anchor.attrib)
def yaml_anchor(self, any=False):
# type: (bool) -> Any
if not hasattr(self, Anchor.attrib):
return None
if any or self.anchor.always_dump:
return self.anchor
return None
def yaml_set_anchor(self, value, always_dump=False):
# type: (Any, bool) -> None
self.anchor.value = value
self.anchor.always_dump = always_dump
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