Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/zmq/utils/interop.py: 17%

1"""Utils for interoperability with other libraries. 

2 

3Just CFFI pointer casting for now. 

4""" 

5 

6# Copyright (C) PyZMQ Developers 

7# Distributed under the terms of the Modified BSD License. 

8 

9from typing import Any 

10 

11 

12def cast_int_addr(n: Any) -> int: 

13 """Cast an address to a Python int 

14 

15 This could be a Python integer or a CFFI pointer 

16 """ 

17 if isinstance(n, int): 

18 return n 

19 try: 

20 import cffi # type: ignore 

21 except ImportError: 

22 pass 

23 else: 

24 # from pyzmq, this is an FFI void * 

25 ffi = cffi.FFI() 

26 if isinstance(n, ffi.CData): 

27 return int(ffi.cast("size_t", n)) 

28 

29 raise ValueError("Cannot cast %r to int" % n)