Re: File and line number in the source file

Hi Cyprien,

Thank you so much for the information!
Have a nice day
Guilhem

Le 18/07/2014 11:48, Cyprien Nicolas a écrit :
> Hello Guilhem,
>
> Il y a environ 33 minutes, [email protected] écrivit :
>> Hello,
>>
>> For some reasons, I would like to print the current source file name and the
>> current line number (aka an assert macro)...
>>
>> Is there a way to get these information in Bigloo?
> You can have this piece of information for any list, either the list
> is a scheme expression you access at macro-expansion time, or any list
> defined using que quote operator.  I guess the information is added by
> the read function.
>
> The location is available using the CER primitive (which appears to be
> undocumented).  The CER value either contains a list of three elements
> in the form '(at filename char-position), or #f if no location
> information is available.
>
> For instance, within the REPL :
>
>
>    1:=> (define bla '(some value))
>    bla
>    1:=> (cer bla)
>    (at stdin 13)
>    1:=> (typeof bla)
>    epair
>    1:=>
>
>
> The primitive ERROR/LOCATION and WARNING/LOCATION know how to
> translate the character position into line & column numbers.
>
> The CER primitive can only be called on `epair' structures, ortherwise
> it will raise a type error.
>
> Regards,
>