Fixes 2024 12 take 1

[enometh]

Hello, here are some more miscellaneous patches for your review., do let
me know if these are correct or should be done differently.

[bohonghuang]

Hello Madhu! Could you please add test cases for the modifications you've made to test/package.lisp? Since the current cffi-object works well with claw-raylib, I might not be fully aware of the contexts in which these changes are relevant. It would be great to have some intuitive test cases that demonstrate what didn't work in previous versions but does work in your committed version.

[enometh]

Sorry the earlier commits were bogus. They did not fix the actual problem I was facing with cobj::define-package-cobject-classes. I think I've addressed the problem just now. I'm still working on the tests to go with it.. To demonsrate the problem I'll need a patch which lets us specify the order in which definitions are processed by cobj::define-package-cobject-classes.
0001-sorted-symbol-list-kludge.patch.txt
test:

(defpackage "FOO-TMP" (:use "CL"))
(in-package "FOO-TMP")
(cffi:defcstruct (point :size 8))
(cffi:defctype point-ptr
    (:pointer (:struct point)))
(cffi:defcstruct point-overlay
  (under point-ptr))
(cffi:defcstruct point
  (x :int)
  (y :int))
;;; invoke it with
(unwind-protect
     (progn (setq cobj::*cobject-class-definitions* nil)
	    (setq cobj:*sorted-symbol-list* '(point-overlay point point-ptr))
	    (cobj::define-package-cobject-classes "FOO-TMP"))
  (setq cobj:*sorted-symbol-list* nil))

Before this patch is applied on executing the above form, cffi-object bombs out on sbcl
with

Execution of a form compiled with errors.
Form:
  (CFFI-OBJECT::DEFINE-STRUCT-COBJECT-CLASS
 (POINT-OVERLAY #<POINT-OVERLAY-TCLASS POINT-OVERLAY>))
Compile-time error:
  during macroexpansion of
(CFFI-OBJECT::DEFINE-STRUCT-COBJECT-CLASS (POINT-OVERLAY #)). Use
*BREAK-ON-SIGNALS* to intercept.

 Cannot find the CFFI object class for type POINT.

Any comments appreciated, thankx

[enometh]

I pushed the wrong commit, hopefully I've pushed the correct branch now.. Can you please delete the earlier files pushed on the branch.

[bohonghuang]

It seems you are tackling forward references of structs, which was already supported in the previous version of cffi-object with define-prototype-cobject-class, but you need to define with (define-cobject-class <package-name>). The macro will sort all the definitions based on the dependencies among the structural types within that package.

[enometh]

The proposed patch only fixes a type mismatch in the implementation.