[Openmcl-devel] @metaclass type definition
R. Matthew Emerson
rme at clozure.com
Mon Apr 27 13:22:40 EDT 2009
Instead of (@class ns-mutable-array), you can just write ns:ns-mutable-
(let* ((my-array (#/arrayWithCapacity: ns:ns-mutable-array 10)))
This needs to be fixed, obviously, but the @class thing is sort of
obsolete usage, so nobody's really taken a look. I will see about
updating the example as soon as I can.
On Apr 27, 2009, at 12:31 PM, Paul Krueger wrote:
> I recently upgraded to: Clozure Common Lisp Version 1.3-r11966M
> I'm trying to run through the NIB loading examples as described in
> the file: ".../ccl/examples/cocoa/nib-loading/HOWTO.html". I did NOT
> try these on any previous release. Part of one of the examples does
> the following while in the ccl package:
> ? (setf *my-dict* (#/dictionaryWithObject:forKey: (@class ns-mutable-
> dictionary) *my-app* #@"NSNibOwner"))
> When I do this I get the following:
> > Error: Unknown type specifier: (@METACLASS "NSMutableDictionary")
> > While executing: %%TYPEP, in process Listener(6).
> Investigating further I did:
> ? (macroexpand-1 '(@class ns-mutable-dictionary))
> (THE (@METACLASS "NSMutableDictionary") (%OBJC-CLASS-CLASSPTR
> #S(OBJC-CLASS-DESCRIPTOR :NAME "NSMutableDictionary" :CLASSPTR
> #<OBJC:OBJC-CLASS NS:NS-MUTABLE-DICTIONARY (#xA015289C)>)))
> So clearly the class was found and it's the @METACLASS type
> assertion that is causing the problem (just as the first error
> message said). I just bypassed the type declaration and got the
> example to work just fine.
> The @class macro seems to be used in several places, so I hunted all
> over to see if I could discover how (@metaclass ...) should have
> been turned into a valid type specifier, but couldn't find it. The
> closest I came was the function "get-objc-class-from-declaration"
> which as near as I can tell is only called in one place that didn't
> seem to be relevant to all the different ways that @class is used,
> but maybe I missed something there.
> Can anyone clarify for me whether the example should have worked as
> written and if so what might be wrong? How does the @class macro
> defined in objc-runtime.lisp ever work?
> Thanks, Paul
> Openmcl-devel mailing list
> Openmcl-devel at clozure.com
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