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Polymorphic map and OO syntax extension
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Date: 2005-07-15 (01:41)
From: Marc Lasson <titmarc@f...>
Subject: Re: [Caml-list] OO syntax extension
Jacques Garrigue wrote:

>OO syntax extension
>    Some camlp4 syntax extensions to write more compact code using
>    objects. The new syntaxes are
>        * val [mutable] x = expr with (reader|writer|accessor)
>          generates code for an x and a set_x method, like in ruby.
>        * obj#x <- expr
>          generates a call to the set_x method.
>        * {| [mutable] f1 = expr1; ...; [mutable] fn = exprn |}
>          generates an immediate object with the above fields and the
>          corresponding accessor methods. You may also include inherit
>          declarations.  
I am very interested in your OO syntax extension but i did not succeed 
to compile it.
I get the following error:

marc@georgie:~$ ocamlc -I +camlp4 -c -pp 'camlp4o pa_extend.cmo 
q_MLast.cmo' pa_oo.ml
File "pa_oo.ml", line 12, characters -249--249:
Unbound value loc

The error's position looks very weird. Since i can't speak camlp4, i'm 
unable to fix it.
Is it serious doctor ?

Marc Lasson.

marc@georgie:~$ ocamlc -v && camlp4o -v
The Objective Caml compiler, version 3.08.2
Standard library directory: /usr/lib/ocaml/3.08
Camlp4 version 3.08.2