"Marco Maggi" <[EMAIL PROTECTED]> writes:
> "William Xu" wrote:
>> Swig could generate pointer types in C to smob. But users
>> still have to define smob related operations(like mark,
>> free, etc) by hand?
>
> Mh, no. I have never used SWIG but if I read [1] and [2]
> and by inspecting "Examples/guile" in the source
> distribution of SWIG 1.3.31, it seems to me that every
> unknown data type used as parameter to functions is treated
> like a pointer.
>
> [1] <http://www.swig.org/Doc1.1/HTML/SWIG.html#n3>
> [2] "swig-1.3.31/Doc/Manual/Guile.html"
>
> That is: SWIG generates a SMOB holding two values:
>
> 1 - the pointer to the data instance;
> 2 - a string holding the name of the unknown type;
Yes, it's more like a smob type pointer. Consider this,
void bar(unsigned char *s)
{
printf("s = %s\n", s);
}
One problem is that how i create and pass a `unsigned char*' parameter
to `bar'. If SWIG requires me to write smob creation myself, that's a
pain...
> By the way: to write a SMOB driver is not difficult if
> you know some C language. Are you sure that you need
> SWIG?
As we know, one of guile or scheme's big shortcomings is lack of
libraries. On the contrary, C libraries are pretty full. Hence, if SWIG
can do a good job on wrapping C codes for guile, that would really be
great..
--
William
I used to be disgusted, now I find I'm just amused.
-- Elvis Costello
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