Update 2025-04-13_16:25:39

venv/lib/python3.11/site-packages/sqlalchemy/cyextension/resultproxy.pyx

@@ -0,0 +1,102 @@
+# cyextension/resultproxy.pyx
+# Copyright (C) 2005-2024 the SQLAlchemy authors and contributors
+# <see AUTHORS file>
+#
+# This module is part of SQLAlchemy and is released under
+# the MIT License: https://www.opensource.org/licenses/mit-license.php
+import operator
+
+cdef class BaseRow:
+    cdef readonly object _parent
+    cdef readonly dict _key_to_index
+    cdef readonly tuple _data
+
+    def __init__(self, object parent, object processors, dict key_to_index, object data):
+        """Row objects are constructed by CursorResult objects."""
+
+        self._parent = parent
+
+        self._key_to_index = key_to_index
+
+        if processors:
+            self._data = _apply_processors(processors, data)
+        else:
+            self._data = tuple(data)
+
+    def __reduce__(self):
+        return (
+            rowproxy_reconstructor,
+            (self.__class__, self.__getstate__()),
+        )
+
+    def __getstate__(self):
+        return {"_parent": self._parent, "_data": self._data}
+
+    def __setstate__(self, dict state):
+        parent = state["_parent"]
+        self._parent = parent
+        self._data = state["_data"]
+        self._key_to_index = parent._key_to_index
+
+    def _values_impl(self):
+        return list(self)
+
+    def __iter__(self):
+        return iter(self._data)
+
+    def __len__(self):
+        return len(self._data)
+
+    def __hash__(self):
+        return hash(self._data)
+
+    def __getitem__(self, index):
+        return self._data[index]
+
+    def _get_by_key_impl_mapping(self, key):
+        return self._get_by_key_impl(key, 0)
+
+    cdef _get_by_key_impl(self, object key, int attr_err):
+        index = self._key_to_index.get(key)
+        if index is not None:
+            return self._data[<int>index]
+        self._parent._key_not_found(key, attr_err != 0)
+
+    def __getattr__(self, name):
+        return self._get_by_key_impl(name, 1)
+
+    def _to_tuple_instance(self):
+        return self._data
+
+
+cdef tuple _apply_processors(proc, data):
+    res = []
+    for i in range(len(proc)):
+        p = proc[i]
+        if p is None:
+            res.append(data[i])
+        else:
+            res.append(p(data[i]))
+    return tuple(res)
+
+
+def rowproxy_reconstructor(cls, state):
+    obj = cls.__new__(cls)
+    obj.__setstate__(state)
+    return obj
+
+
+cdef int is_contiguous(tuple indexes):
+    cdef int i
+    for i in range(1, len(indexes)):
+        if indexes[i-1] != indexes[i] -1:
+            return 0
+    return 1
+
+
+def tuplegetter(*indexes):
+    if len(indexes) == 1 or is_contiguous(indexes) != 0:
+        # slice form is faster but returns a list if input is list
+        return operator.itemgetter(slice(indexes[0], indexes[-1] + 1))
+    else:
+        return operator.itemgetter(*indexes)