RE: Defadvice and methods

That's absolutely correct, as I finally discovered just minutes ago. Sigh;
sometimes I can be awfully obtuse.

Thanks for the help.

dey

-----Original Message-----
From: Martin Simmons [mailto:martin@lispworks.com]
Sent: Thursday, August 11, 2005 2:35 PM
To: deyoung@bloodhoundinc.com
Cc: lisp-hug@lispworks.com
Subject: Re: Defadvice and methods


>>>>> On Wed, 10 Aug 2005 15:55:39 -0400, "Young, David"
<deyoung@bloodhoundinc.com> said:

  David> Hi. I'm trying to attach a piece of :after advice to
initialize-instance. I
  David> need to use advice because there's already an after method for this
  David> initialize instance specialization in another package, and it's for
  David> debugging purposes.

  David> What is the proper way to write this? In particular, how do I
indicate &rest
  David> in the specialization portion? According to Lispworks, the lambda
list for
  David> initialize-instance is (INSTANCE &REST INITARGS &KEY
&ALLOW-OTHER-KEYS)

  David> (lw:defadvice ((method initialize-instance (class-name <what goes
here?>))
  David>                      assign-wmo-id :after)
  David>     (self)
  David>     (setf (gethash (get-next-wmo-id) *wm-instances*) self))

  David> I've tried various incantations of the method dspec above, adding
&rest and
  David> other things, but Lispworks always tell me:

  David> Undefined function (METHOD INITIALIZE-INSTANCE (STANDARD-KB-OBJECT
T T)) in
  David> form (LISPWORKS:DEFADVICE (METHOD INITIALIZE-INSTANCE
(STANDARD-KB-OBJECT T
  David> T)))

The name of a method only includes the fixed (specialized) arguments, so the
&rest specialization just disappears.  More importantly, the name needs to
include any qualifiers, so I think you probably want this:

(method initialize-instance :after (standard-kb-object))

-- 
Martin Simmons                              Email: martin@lispworks.com
LispWorks Ltd, St John's Innovation Centre    TEL:   +44 1223 421860
Cowley Road, Cambridge CB4 0WS, England.      FAX:   +44 870 2206189

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