Hi,

On Wed 23 Jan 2013 14:46, Andrew Gaylard <ag@computer.org> writes:

> I made another attempt using strings instead of numbers, to get an idea
> of whether save.scm is usable:
>
> $ cat persistence-test.scm
> (use-modules (oop goops))
> (use-modules (oop goops describe))
> (use-modules (oop goops save))
>
> ;; Apply Andy's fix to the readable? function
> (set! (@@ (oop goops save) readable?)
>       (lambda (x) (hashq-ref (@@ (oop goops save) readables) x)))
>
> ;; make a new class, make an instance of it, and show it
> (define-class <ag-record> (<object>) name addr)
> (define r (make <ag-record>))
> (slot-set! r 'name "Fred")
> (slot-set! r 'addr "101 Elm Street")
> (describe r)
>
> ;; persist the instance
> (define a '())
> (set! a (acons 'r r a))
> (save-objects a (current-output-port))
>
> $ guile
> scheme@(guile-user)> (load "persistence-test.scm")
> #<<ag-record> 9f2b2a0> is an instance of class <ag-record>
> Slots are: 
>      name = "Fred"
>      addr = "101 Elm Street"
> (define r (restore <ag-record> (name addr) oop/goops/save.scm:423:32: In
> procedure #<procedure 9f64f48 at oop/goops/save.scm:414:21 (name aname
> get set)>:
> oop/goops/save.scm:423:32: Wrong type to apply: #<syntax-transformer
> write-component>

This tells me that this module has not worked in Guile 2.0.
Write-component is a macro, and all of its uses were before its
definition.

There is no way to patch this easily; you have to edit the file.  The
attached patch is applied to git.

Now:

  (save-objects a (current-output-port))
  =| (define r (restore <ag-record> (name addr) "Fred" "101 Elm Street"))

Regards,

Andy