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Re: C structures

From: Leonardo Lopes Pereira
Subject: Re: C structures
Date: Fri, 30 Dec 2005 13:19:52 -0300

Em Fri, 30 Dec 2005 07:58:30 -0800 (PST)
Mike Gran <address@hidden> escreveu:

> Leonardo-
> A "list" can hold any type of data, so it shouldn't be a problem to
> unpack a struct into a list.
> There really isn't a way to automatically convert a C struct into a
> list.  You'd have to convert each element of the struct into a Guile
> type, then assemble them into a list.  
> Converting a C struct to a list is a good idea if you're giving the
> C data to Guile, and you won't need the C struct to be valid
> afterwards.
> If you want Guile to operate on the C struct directly because it
> needs to remain relevant, then a different approach is used.
This is what I want to do.
> Which of the following are you trying to accomplish?
> 1.  You want to make C data available to Guile functions, and once
> that data is passed to Guile, it never (or rarely) needs to be
> handed back to C.
> 2.  You want the C code and the Guile code to be able to operate on
> the same C structs at the same time.

To be more clear. I want to be able to call a C function from guile.
The problem is that this function has a struct as an arg and this
struct has variable members. So, I need to create a list on
scheme/guile and convert it to a C struct that will be used as an arg
to that function.
> --
> Mike Gran
> --- Leonardo Lopes Pereira <address@hidden> wrote:
> > I would like to know if is there any way to convert C structs to
> > any type of Guile data.
> > 
> > 
> __________________________________________ 
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