[cffi-devel] Groveller's bitfield support

[Desmond O. Chang]

Hi all,

This patch adds bitfield support to the groveller. Here is the usage:

In grovel file, write:

(bitfield flags-ctype
  ((:flag-a "FLAG_A")
    :documentation "DOCU_A")
  ((:flag-b "FLAG_B")
    :documentation "DOCU_B")
  ((:flag-c "FLAG_C")
    :documentation "DOCU_C"))

And if the C header file has:

#define FLAG_A 1
#define FLAG_B 2
#define FLAG_C 4

This will generate:

(cffi:defbitfield (flags-ctype)
  (:flag-a 1)
  (:flag-b 2)
  (:flag-c 4))

Documentation is also provided in the patch.

Thanks
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