mirror of
https://github.com/aljazceru/bitfinex-api-py.git
synced 2025-12-19 06:44:22 +01:00
35 lines
1.0 KiB
Python
35 lines
1.0 KiB
Python
from typing import cast, TypeVar
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from .. exceptions import IntegerUnderflowError, IntegerOverflowflowError
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__all__ = [ "Int16", "Int32", "Int45", "Int64" ]
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T = TypeVar("T")
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class _Int(int):
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def __new__(cls: T, integer: int) -> T:
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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)."
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bits = cls._BITS - 1
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min, max = -(2 ** bits), (2 ** bits) - 1
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if integer < min:
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raise IntegerUnderflowError(f"Underflow. Cannot store <{integer}> in {cls._BITS} bits integer. The min and max bounds are {min} and {max}.")
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if integer > max:
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raise IntegerOverflowflowError(f"Overflow. Cannot store <{integer}> in {cls._BITS} bits integer. The min and max bounds are {min} and {max}.")
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return cast(T, super().__new__(int, integer))
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class Int16(_Int):
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_BITS = 16
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class Int32(_Int):
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_BITS = 32
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class Int45(_Int):
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_BITS = 45
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class Int64(_Int):
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_BITS = 64 |