Re: [Caml-list] filename and line number.

[Anders Fugmann <anders@fugmann.net>]

Thanks for the replies,

Using cppo, would I need to define 'loc' in each file using log, or can 
it be defined in another module?

If not, I guess the alternative is to create a syntax extenstion that 
will include Loc.t structure as a parameter to some print function - or 
add it manually, but I would like to avoid cluttering the code with 
__LOCATION__ everywhere.

Regards
Anders Fugmann



On 08/02/2011 11:21 PM, Martin Jambon wrote:
> On 08/02/11 05:45, Gabriel Scherer wrote:
>> Finally, Martin Jambon also has its own "cppo" tools mimicking cpp,
>> which I suppose doesn't rely on camlp4, and has __FILE__ and __LINE__
>> macros which may be in a more directly exploitable format. I have
>> never tried it though. See:
>>    http://martin.jambon.free.fr/cppo.html
>
> That's correct. Thanks for the plug.
>
> Here is an example:
>
> $ cat loc.ml
> #define loc (Printf.sprintf "File %S, line %i" __FILE__ __LINE__)
>
> print_endline loc;;
> print_endline loc;;
>
> $ ocamlopt -o loc -pp cppo loc.ml; ./loc
> File "loc.ml", line 3
> File "loc.ml", line 4
>
>
>
> Martin
>