On Mon, 2009-02-23 at 20:34 +0100, Andreas Rottmann wrote:
> kub <[email protected]> writes:
>
> > Hi,
> > How can i obtain character position from syntax object ?
> >
> On a related note, is there some variation of `read' that returns a
> syntax object with source (character) position, so you can get
> reasonable error messages for files "included" at expand-time?
I'm not sure this entirely addresses what you're looking for, but the
normal read already does that for my include library:
$ cat bad-lexical.scm
(define x -oops)
$ cat use-bad-lexical.sps
(import (rnrs)
(xitomatl include))
(include "bad-lexical.scm")
$ ikarus --r6rs-script use-bad-lexical.sps
Unhandled exception:
Condition components:
1. &error
2. &who: include/lexical-context
3. &message: "error while trying to include"
4. &irritants: ("bad-lexical.scm")
5. &lexical
6. &message: "invalid numeric sequence"
7. &irritants: ("-o")
8. &source-position:
file-name: "bad-lexical.scm"
character: 11
$
--
: Derick
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