Source code for titan_pylib.data_structures.safe_hash.hash_dict

 1from typing import Any, Iterator
 2from random import Random
 3
 4

[docs]
 5class HashDict:
 6
 7    _r = Random()
 8    _xor = _r.randrange(10000000, 1000000000)
 9
10    def __init__(self) -> None:
11        self._data: dict[int, Any] = {}
12
13    def __setitem__(self, key: int, val: Any) -> None:
14        self._data[key ^ self._xor] = val
15
16    def __getitem__(self, key: int) -> Any:
17        return self._data[key ^ self._xor]
18
19    def __delitem__(self, key: int) -> None:
20        del self._data[key ^ self._xor]
21
22    def __contains__(self, key: int) -> bool:
23        return key ^ self._xor in self._data
24
25    def __len__(self) -> bool:
26        return len(self._data)
27

[docs]
28    def keys(self) -> Iterator[int]:
29        return (k ^ self._xor for k in self._data.keys())

30

[docs]
31    def values(self) -> Iterator[Any]:
32        return (v for v in self._data.values())

33

[docs]
34    def items(self) -> Iterator[tuple[int, Any]]:
35        return ((k ^ self._xor, v) for k, v in self._data.items())

36
37    def __str__(self) -> str:
38        return "{" + ", ".join(f"{k}: {v}" for k, v in self.items()) + "}"
39
40    def __repr__(self):
41        return f"{self.__class__.__name__}({self})"