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Re: FFI supports callbacks

From: Ludovic Courtès
Subject: Re: FFI supports callbacks
Date: Mon, 06 Sep 2010 14:32:23 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux)


"Jose A. Ortega Ruiz" <address@hidden> writes:

> On Sun, Sep 05 2010, Ludovic Courtès wrote:
>> Hi there!
>> address@hidden (Ludovic Courtès) writes:
>>> BTW, while we’re at it, how about make-foreign-function => 
>>> pointer->procedure?
>> We briefly discussed this on IRC.  One issue with the
>> ‘pointer->procedure’ name is that ‘->’ procedures are most of the time
>> one-argument procedures, whereas ‘make-foreign-function’ has 3 mandatory
>> arguments.
>> However, it occurred to me that what confuses me most about
>> ‘make-foreign-function’ is that it actually makes a Scheme procedure out
>> of a foreign function.
>> Conversely, ‘procedure->pointer’ really makes a foreign function out of
>> a Scheme procedure.
>> In addition, I like the idea of having names that show the symmetry of
>> these two procedures.
>> So, what do you think?  :-)
>> (I’m also open to different names that aren’t confusing and show the
>> symmetry.)
> import-foreign-function
> export-foreign-function / export-to-foreign-function
> procedure-from-foreign-function / foreign-function-to-procedure
> procedure-to-foreign-function / foreign-function-from-procedure

OK.  (Slightly to verbose to my taste.)

> procedure-from-foreign / foreign-to-procedure
> procedure-to-foreign / foreign-from-procedure
> at any rate, i find "pointer" not clear enough.

Hmm but I find ‘foreign’ as a substantive hard to parse.  :-)

The object type in question is now called ‘pointer’ (it used to be
‘foreign’), hence the name.  “Pointer” is meant as a synonym for
‘void *’ ans pointer objects are untyped, which may be why it seems
“vague”.  But hey, the concept of pointing to the void *is* vague.

Thanks for the suggestions!


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