1 (in-package :lisp-on-lines
)
3 (defmethod initargs.slot-names
(object)
4 "Returns ALIST of (initargs) . slot-name."
5 (nreverse (mapcar #'(lambda (slot)
6 (cons (closer-mop:slot-definition-initargs slot
)
7 (closer-mop:slot-definition-name slot
)))
8 (closer-mop:class-slots
(class-of object
)))))
10 (defun find-slot-names-from-initargs-plist (object initargs-plist
)
11 "returns (VALUES SLOT-NAMES VALUES), Given a plist of initargs such as one would pass to :DEFAULT-INITARGS.
12 SLOT-NAMES contains the slot-names specified by the initarg, and VALUES the corresponding VALUE."
13 (let (slot-names values
14 (initargs.slot-names-alist
(initargs.slot-names object
)))
15 (loop for
(initarg value
) on initargs-plist
17 (cdr (assoc-if #'(lambda (x) (member initarg x
))
18 initargs.slot-names-alist
))))
19 (when slot-name
;ignore invalid initargs. (good idea/bad idea?)
20 (push slot-name slot-names
)
22 finally
(return (values slot-names values
)))))
24 (defun funcall-with-special-initargs (object initargs function
&rest args
)
25 "Call FUNCTION with dynnamic bindings of the slots in OBJECT specified by the INITARGS plist"
26 (multiple-value-bind (slot-names values
)
27 (find-slot-names-from-initargs-plist object initargs
)
30 (loop for slot-name in slot-names
31 collect
(slot-value object slot-name
)))
33 (apply function args
))))
35 (defmacro with-special-initargs
((object &rest initargs
) &body body
)
36 `(funcall-with-special-initargs ,object
,initargs