Wrapping C++ in Ocaml?

Wrapping C++ in Ocaml?

[Erik de Castro Lopo]

Hi all,

I have wrapped a C library for use with Ocaml and didn't find 
the task too daunting. I have now found a C++ library that would
be useful, but the Ocaml ORA book makes no mention of wrapping
C++ libraries.

Has anyone got any experience wrapping C++ libraries in Ocaml?
Is it possible? Painful but doable? Too painful to think about?

Any pointers or advice appreciated.

Cheers,
Erik
-- 
+-----------------------------------------------------------+
  Erik de Castro Lopo
+-----------------------------------------------------------+
"I consider C++ the most significant technical hazard to the survival
of your project and do so without apologies." -- Alistair Cockburn

Re: [Caml-list] Wrapping C++ in Ocaml?

[micha]

Erik de Castro Lopo schrieb:
> Hi all,
>
> I have wrapped a C library for use with Ocaml and didn't find 
> the task too daunting. I have now found a C++ library that would
> be useful, but the Ocaml ORA book makes no mention of wrapping
> C++ libraries.
>
>   
you can only wrapp via C - functions

> Has anyone got any experience wrapping C++ libraries in Ocaml?
> Is it possible? Painful but doable? Too painful to think about?
>
>   
I have done it a few times, it's much typing :-)
you must write a c function for the methods of the class you want to 
wrap and give them a pointer to the c++ class, so you can call the 
method there. Often you define on the c++ side an adapter class which 
delegates method calls to the ocaml side (f.e. when wrapping events from 
and to c++/ocaml). For big libraries it's a neverending task without 
more tools.
There is the platinum framework (on sourceforge), a c++ class lib with a 
little gui. This lib compiles for win32, Linux, WinCE and qnx, I have 
done some wrapping to the gui part, together with the event handling and 
it works very nice (if you want to read it as an example).

> Any pointers or advice appreciated.
>
>   
Python, Ruby and Perl all have wrappers for QT and they use tools to 
generate the C interface I think. Maybe worth to look at...

cheers,
 Michael

Re: [Caml-list] Wrapping C++ in Ocaml?

[Dmitry Bely]

On 1/2/07, Erik de Castro Lopo <mle+ocaml@mega-nerd.com> wrote:

> Has anyone got any experience wrapping C++ libraries in Ocaml?
> Is it possible? Painful but doable? Too painful to think about?
>
> Any pointers or advice appreciated.

Swig?

http://www.swig.org

- Dmitry Bely