On Mon, Apr 21, 2008 at 01:54:05PM +0100, Luís Oliveira wrote:
> On Mon, Apr 21, 2008 at 12:42 AM, Tamas K Papp <[EMAIL PROTECTED]> wrote:
> > (cffi:defctype my-double :double)
> >
> > (defmethod cffi:translate-to-foreign (value (type (eql 'my-double)))
> > (coerce value 'double-float))
>
> That should be:
>
> * (define-foreign-type my-double-type ()
> ()
> (:actual-type :double)
> (:simple-parser my-double))
>
> MY-DOUBLE-TYPE
> * (defmethod translate-to-foreign (value (type my-double-type))
> (coerce value 'double-float))
>
> #<STANDARD-METHOD TRANSLATE-TO-FOREIGN (T MY-DOUBLE-TYPE) {1003370511}>
> * (convert-to-foreign 10 'my-double)
>
> 10.0d0
Hi Luis,
Thanks for the fast response, it fixed my problem.
Maybe mentioning define-foreign-type in section 5.4 (Foreign Type
Translators) of the manual would help. Your example works perfectly,
but the define-foreign-type documentation mentions neither
:actual-type and :simple-parser.
Tamas
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