CLOS :metaclass support

[ehuelsmann]

Blake McBride? reports:

Running the code:

(defclass meta-class1 (standard-class)
  (cv1 cv2 cv3)
  (:metaclass standard-class))

(defclass class1 (standard-object)
  (iv1 iv2 iv3)
  (:metaclass meta-class1))

The second object returns:

#<STANDARD-CLASS CLASS1 {F673CC}>

It should be:

#<META-CLASS1 CLASS1 {F673CC}>

Not only is it reporting the wrong class of class1 but it doesn't work either. I suppose ABCL doesn't support the :metaclass option. It just ignores it. The problem is that without that option ABCL's CLOS is severely limited. Any plans to fix this?

Thanks.

Blake McBride?

[ehuelsmann]

(In [12527]) Make all class accessor functions generic functions instead

of normal ones, to support METACLASS. Additionally, make
it possible to store general objects in Layout.lispClass.

Because classes may be of a different Java type than

StandardClass?, fall back to the generic functions to access
the required fields from Java.

See #38.

[ehuelsmann]

(In [12529]) Re #38: CLASSP can't be checked with instanceof alone any longer.

[ehuelsmann]

(In [12530]) Re #38: Make method creation and dispatch possible for classes with
non-standard-class metaclasses.

[ehuelsmann]

(In [12534]) Make sure non-standard (meta) classes aren't cast to LispClass?
as they are StandardObject?-s.

Re #38.

[ehuelsmann]

(In [12576]) Re #38: Merge the METACLASS branch to trunk.

[ehuelsmann]

(In [12577]) Re #38: Delete merged metaclass branch.

[ehuelsmann]

(In [12582]) Re #38: Make Cells compile with our metaclass support by

making a documentation initarg.

[ehuelsmann]

(In [12658]) Close #38: Add some metaclass tests - to be expanded
upon fixing encountered issues.