@mytec: pushed back before 1.1

backend/venv/lib/python3.12/site-packages/bson/_helpers.py

@@ -0,0 +1,43 @@
+# Copyright 2021-present MongoDB, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Setstate and getstate functions for objects with __slots__, allowing
+compatibility with default pickling protocol
+"""
+from __future__ import annotations
+
+from typing import Any, Mapping
+
+
+def _setstate_slots(self: Any, state: Any) -> None:
+    for slot, value in state.items():
+        setattr(self, slot, value)
+
+
+def _mangle_name(name: str, prefix: str) -> str:
+    if name.startswith("__"):
+        prefix = "_" + prefix
+    else:
+        prefix = ""
+    return prefix + name
+
+
+def _getstate_slots(self: Any) -> Mapping[Any, Any]:
+    prefix = self.__class__.__name__
+    ret = {}
+    for name in self.__slots__:
+        mangled_name = _mangle_name(name, prefix)
+        if hasattr(self, mangled_name):
+            ret[mangled_name] = getattr(self, mangled_name)
+    return ret