first comit

venv/lib/python3.10/site-packages/zmq/utils/interop.py

@@ -0,0 +1,29 @@
+"""Utils for interoperability with other libraries.
+
+Just CFFI pointer casting for now.
+"""
+
+# Copyright (C) PyZMQ Developers
+# Distributed under the terms of the Modified BSD License.
+
+from typing import Any
+
+
+def cast_int_addr(n: Any) -> int:
+    """Cast an address to a Python int
+
+    This could be a Python integer or a CFFI pointer
+    """
+    if isinstance(n, int):
+        return n
+    try:
+        import cffi  # type: ignore
+    except ImportError:
+        pass
+    else:
+        # from pyzmq, this is an FFI void *
+        ffi = cffi.FFI()
+        if isinstance(n, ffi.CData):
+            return int(ffi.cast("size_t", n))
+
+    raise ValueError("Cannot cast %r to int" % n)