mirror of
https://github.com/aljazceru/bitfinex-api-py.git
synced 2025-12-19 14:54:21 +01:00
43 lines
1.1 KiB
Python
43 lines
1.1 KiB
Python
from typing import cast, TypeVar, Union
|
|
|
|
from .. exceptions import IntegerUnderflowError, IntegerOverflowflowError
|
|
|
|
__all__ = [ "Int16", "Int32", "Int45", "Int64" ]
|
|
|
|
T = TypeVar("T")
|
|
|
|
class _Int(int):
|
|
def __new__(cls: T, integer: int) -> T:
|
|
assert hasattr(cls, "_BITS"), "_Int must be extended by a class that has a static member _BITS (indicating the number of bits with which to represent the integers)."
|
|
|
|
bits = cls._BITS - 1
|
|
|
|
min, max = -(2 ** bits), (2 ** bits) - 1
|
|
|
|
if integer < min:
|
|
raise IntegerUnderflowError(f"Underflow. Cannot store <{integer}> in {cls._BITS} bits integer. The min and max bounds are {min} and {max}.")
|
|
|
|
if integer > max:
|
|
raise IntegerOverflowflowError(f"Overflow. Cannot store <{integer}> in {cls._BITS} bits integer. The min and max bounds are {min} and {max}.")
|
|
|
|
return cast(T, super().__new__(int, integer))
|
|
|
|
class Int16(_Int):
|
|
_BITS = 16
|
|
|
|
int16 = Union[Int16, int]
|
|
|
|
class Int32(_Int):
|
|
_BITS = 32
|
|
|
|
int32 = Union[Int32, int]
|
|
|
|
class Int45(_Int):
|
|
_BITS = 45
|
|
|
|
int45 = Union[Int45, int]
|
|
|
|
class Int64(_Int):
|
|
_BITS = 64
|
|
|
|
int64 = Union[Int64, int] |