Re: File and line number in the source file

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,

-- 
Cyprien Nicolas, PhD Student, INDES Team

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