def decimal_new(cls, value=None):
if value is None:
return cls.numberWithInt_(0)
else:
if isinstance(value, NSDecimal):
return cls.decimalNumberWithDecimal_(value)
elif isinstance(value, NSDecimalNumber):
return cls.decimalNumberWithDecimal_(value.decimalValue())
elif isinstance(value, float):
return cls.numberWithDouble_(value)
elif isinstance(value, str):
value = NSDecimal(value)
return cls.decimalNumberWithDecimal_(value)
else:
# The value is either an integer, or
# invalid (and numberWithLongLong_ wil raise
# TypeError)
try:
return cls.numberWithLongLong_(value)
except ValueError:
raise TypeError("Value is not a number")
# TypeError)
try:
return cls.numberWithLongLong_(value)
except ValueError:
raise TypeError("Value is not a number")
addConvenienceForClass(
"NSDecimalNumber",
(
("__new__", staticmethod(decimal_new)),
(
"__add__",
lambda self, other: NSDecimalNumber(
operator.add(NSDecimal(self), other)),
),
(
"__radd__",
lambda self, other: NSDecimalNumber(
operator.add(other, NSDecimal(self))),
),
(
"__sub__",
lambda self, other: NSDecimalNumber(
operator.sub(NSDecimal(self), other)),
),
(
"__rsub__",
lambda self, other: NSDecimalNumber(
operator.sub(other, NSDecimal(self))),