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34 lines
709 B
34 lines
709 B
"""Utils for interoperability with other libraries.
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Just CFFI pointer casting for now.
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"""
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# Copyright (C) PyZMQ Developers
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# Distributed under the terms of the Modified BSD License.
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try:
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long
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except NameError:
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long = int # Python 3
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def cast_int_addr(n):
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"""Cast an address to a Python int
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This could be a Python integer or a CFFI pointer
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"""
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if isinstance(n, (int, long)):
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return n
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try:
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import cffi
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except ImportError:
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pass
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else:
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# from pyzmq, this is an FFI void *
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ffi = cffi.FFI()
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if isinstance(n, ffi.CData):
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return int(ffi.cast("size_t", n))
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raise ValueError("Cannot cast %r to int" % n)
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