Re: Subject: Lua, Swig and Arrays
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- Subject: Re: Subject: Lua, Swig and Arrays
- From: "mark gossage " <mark@...>
- Date: 2006年6月28日 04:22:10 MDT
Hello Sylvain,
To wrap
> typedef unsigned long channel_list_t[CONFIG_MAX_CHANNELS_NUMBER];
> void do_test( channel_list_t * chans);
You cannot (currently) do anything quite so neat. It seems that there might be an issue with SWIG and the array typedef.
I can offer two possible solutions for C code.
1) carray.i
In your interface add the following:
%include <carrays.i>
%array_functions(unsigned long,channel_list_arr)
This will add the following functions:
* TYPE *new_NAME(int nelements)
* void delete_NAME(TYPE *);
* TYPE NAME_getitem(TYPE *, int index);
* void NAME_setitem(TYPE *, int index, TYPE value);
So your lua code can be:
aa=new_channel_list(3)
channel_list_setitem(aa,0,1)
channel_list_setitem(aa,1,10)
..
do_test(aa)
2) typemaps.i
You can tell SWIG that what you want it to pass it an array of 3 items.
in your interface add:
%include <typemaps.i>
%apply (unsigned long INPUT[ANY]) {(channel_list_t chans)}
Now you can just call the function with a Lua table
do_test{1,2,3}
Let me know how this works and if you have any problems with it.
PS. I think it would be better to send to the SWIG mailing list for SWI specifc questions.
Regards,
Mark Gossage