Re: scm_to_pointer vs scm-pointer

2012-07-05 Thread Ludovic Courtès 
Hi,

Andy Wingo wi...@pobox.com skribis:

 On Tue 03 Jul 2012 23:47, l...@gnu.org (Ludovic Courtès) writes:

 This should be fixed.  Otherwise it's impossible to document in any
 sane fashion.

 Suggestion: change scm_to_pointer to SCM_POINTER_VALUE.  WDYT?

 I’m happy with this change.  Mark?

 (Back then, I was skeptical about the usefulness of the C pointer API.
 I have since used ‘SCM_POINTER_VALUE’ and ‘scm_from_pointer’ in
 Guile-GCC, which uses a mixed dynamic/static FFI, and for good reasons.)

 On second thought, let's leave it in.  It is terribly confusing, but
 alternatives are worse.

We could also document ‘SCM_POINTER_VALUE’, WDYT?

Ludo’.

Re: scm_to_pointer vs scm-pointer

2012-07-04 Thread Andy Wingo 
On Tue 03 Jul 2012 23:47, l...@gnu.org (Ludovic Courtès) writes:

 This should be fixed.  Otherwise it's impossible to document in any
 sane fashion.

 Suggestion: change scm_to_pointer to SCM_POINTER_VALUE.  WDYT?

 I’m happy with this change.  Mark?

 (Back then, I was skeptical about the usefulness of the C pointer API.
 I have since used ‘SCM_POINTER_VALUE’ and ‘scm_from_pointer’ in
 Guile-GCC, which uses a mixed dynamic/static FFI, and for good reasons.)

On second thought, let's leave it in.  It is terribly confusing, but
alternatives are worse.

Andy
-- 
http://wingolog.org/

Re: scm_to_pointer vs scm-pointer

2012-07-03 Thread Ludovic Courtès 
Heya!

Andy Wingo wi...@pobox.com skribis:

 scm-pointer takes a Scheme value and returns a Scheme value which is a
 foreign pointer to the Scheme value.  It has been in Guile since 2.0 I
 think.

v2.0.0-105-g148c331, apparently.

 scm_to_pointer takes a Scheme value which is a foreign pointer, and
 unpacks that foregin pointer as a void*.

 scm_to_pointer is a new interface in master that is not in 2.0.5,

Yes.  ‘scm_from_pointer’ is pre-2.0.0.

 and that is inconsistent with scm-pointer / scm_scm_to_pointer.

Yes, but it’s consistent with the other scm_{to,from} functions.

 This should be fixed.  Otherwise it's impossible to document in any
 sane fashion.

 Suggestion: change scm_to_pointer to SCM_POINTER_VALUE.  WDYT?

I’m happy with this change.  Mark?

(Back then, I was skeptical about the usefulness of the C pointer API.
I have since used ‘SCM_POINTER_VALUE’ and ‘scm_from_pointer’ in
Guile-GCC, which uses a mixed dynamic/static FFI, and for good reasons.)

Thanks,
Ludo’.

scm_to_pointer vs scm-pointer

2012-07-02 Thread Andy Wingo 
Hello,

scm-pointer takes a Scheme value and returns a Scheme value which is a
foreign pointer to the Scheme value.  It has been in Guile since 2.0 I
think.

scm_to_pointer takes a Scheme value which is a foreign pointer, and
unpacks that foregin pointer as a void*.

scm_to_pointer is a new interface in master that is not in 2.0.5, and
that is inconsistent with scm-pointer / scm_scm_to_pointer.  This
should be fixed.  Otherwise it's impossible to document in any sane
fashion.

Suggestion: change scm_to_pointer to SCM_POINTER_VALUE.  WDYT?

Andy
-- 
http://wingolog.org/