ComplianceAsCode / content

    __nonzero__ = __bool__ = lambda s: True

class _FALSE(BaseElement):

    """

    Boolean base element FALSE.

    Not meant to be subclassed nor instantiated directly.

    """

    def __init__(self):

        super(_FALSE, self).__init__()

        # assigned at singleton creation: self.dual = TRUE

    def __hash__(self):

        return hash(False)

    def __eq__(self, other):

        return self is other or other is False or isinstance(other, _FALSE)

    def __str__(self):

        return '0'

    def __repr__(self):

        return 'FALSE'

    def __call__(self):

        return self

    __nonzero__ = __bool__ = lambda s: False

class Symbol(Expression):

        return (' ' * indent) + repr(self)

class _TRUE(BaseElement):

    """

    Boolean base element TRUE.

    Not meant to be subclassed nor instantiated directly.

    """

    def __init__(self):

        super(_TRUE, self).__init__()

        # assigned at singleton creation: self.dual = FALSE

    def __hash__(self):

        return hash(True)

    def __eq__(self, other):

        return self is other or other is True or isinstance(other, _TRUE)

    def __str__(self):

        return '1'

    def __repr__(self):

        return 'TRUE'

    def __call__(self):

        return self

    __nonzero__ = __bool__ = lambda s: True

class _FALSE(BaseElement):