Sexplib question

Sexplib question

[a non]

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Hi

I have been following the threads about sexplib/deriving with interest and
have a question
about using sexplib with existing libraries.

Example: If I want to use sexplib with values of type Netdate.t (a date type
from the ocamlnet
library) and try the following:

   type v = { name : string; created_at : Netdate.t} with sexp

then I get the following error when compiling:

     Unbound value Netdate.t_of_sexp

My question is, what is the easiest way to generate the sexp functions for
Netdate.t,
without modifying the code of the Netdate library ?

Best regards
Anders

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Re: Sexplib question

[berke.durak]

On Mar 21, 8:31 pm, "a non" <anon2008...@gmail.com> wrote:
> Hi
>
> I have been following the threads about sexplib/deriving with interest and
> have a question
> about using sexplib with existing libraries.
>
> Example: If I want to use sexplib with values of type Netdate.t (a date type
> from the ocamlnet
> library) and try the following:
>
>    type v = { name : string; created_at : Netdate.t} with sexp
>
> then I get the following error when compiling:
>
>      Unbound value Netdate.t_of_sexp
>
> My question is, what is the easiest way to generate the sexp functions for
> Netdate.t, without modifying the code of the Netdate library ?

Just define a type alias for Netdate.t and define a printer for it, as
in :

type netdate = Netdate.t
let sexp_of_netdate n = Atom "foo"
let netdate_of_sexp = function Atom x -> ...
type v = { name : string; created_at : netdate} with sexp
--
Berke Durak