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pythonpython-cffi

Accessing cffi enums

Suppose I define an enum under cffi:

from cffi import FFI
ffi = FFI()
ffi.cdef('typedef enum {RANDOM, IMMEDIATE, SEARCH} strategy;')

Now this can be easily accessed when calling cdef again. But how would I then like to access this enum in python, without re-declaring it? Can't find any mentions in the docs.

Solution

  • Use ffi.dlopen, and access the enum value by qualifying using the return value of the ffi.dlopen:

    >>> from cffi import FFI
>>> ffi = FFI()
>>> ffi.cdef('typedef enum {RANDOM, IMMEDIATE, SEARCH} strategy;')
>>> c = ffi.dlopen('c')
>>> c.RANDOM
0
>>> c.IMMEDIATE
1
>>> c.SEARCH
2