python (3.11.7)
1 """Utilities for defining models
2 """
3
4 import operator
5 from typing import Any, Callable, Type
6
7
8 class ESC[4;38;5;81mKeyBasedCompareMixin:
9 """Provides comparison capabilities that is based on a key"""
10
11 __slots__ = ["_compare_key", "_defining_class"]
12
13 def __init__(self, key: Any, defining_class: Type["KeyBasedCompareMixin"]) -> None:
14 self._compare_key = key
15 self._defining_class = defining_class
16
17 def __hash__(self) -> int:
18 return hash(self._compare_key)
19
20 def __lt__(self, other: Any) -> bool:
21 return self._compare(other, operator.__lt__)
22
23 def __le__(self, other: Any) -> bool:
24 return self._compare(other, operator.__le__)
25
26 def __gt__(self, other: Any) -> bool:
27 return self._compare(other, operator.__gt__)
28
29 def __ge__(self, other: Any) -> bool:
30 return self._compare(other, operator.__ge__)
31
32 def __eq__(self, other: Any) -> bool:
33 return self._compare(other, operator.__eq__)
34
35 def _compare(self, other: Any, method: Callable[[Any, Any], bool]) -> bool:
36 if not isinstance(other, self._defining_class):
37 return NotImplemented
38
39 return method(self._compare_key, other._compare_key)
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