[Ecls-list] updating refererence pointers in UFFI
goffioul at imec.be
Mon Sep 4 09:27:24 UTC 2006
> This is not only a CLISP feature, SBCL and CMUCL also have
> it. This should be done at the level of the c-inline special
> form. It will indeed complicate the special form a little,
> given the fact that c-inline already supports multiple values
> as output type.
> I am worried however at messing up with the UFFI interface,
> but that can probably be fixed with a warning message and a
> global flag that disables it. As a side note, if you look at
> all the FFI interfaces out there, not even CFFI provide this,
> probably because some commercial lisps do not support in/out
> and out arguments.
If you consider that any argument without a in/out tag is an
input argument, then you should be compliant with UFFI and the
user should then allocate the foreign objects himself and
dereferencing it in the UFFI-way. But IMO, UFFI/CFFI should
integrate those concepts because it makes foreign programming
more natural (LISP-like).
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