[slime-devel] MOP access

[Rui Patrocínio]

Hi,

 Is there any access to MOP-like functionality in swank? I've not found
it so I create a simple interface, similar to the xref one.

swank.lisp:
;;; MOP
(defslimefun mop (type symbol-name)
  (let ((symbol (parse-symbol-or-lose symbol-name *buffer-package*)))
    (ecase type
      (:subclasses (class-direct-subclasses symbol))
      (:superclasses (class-direct-superclasses symbol)))))

Maybe 'mop' isn't the best name.

swank-backend.lisp:
;;; MOP
(definterface class-direct-subclasses (class-name)
   "Return the list of subclasses of class.")

(definterface class-direct-superclasses (class-name)
   "Return the list of superclasses of class.")

swank-cmucl.lisp:
;;; CLOS MOP
(defimplementation class-direct-subclasses (class-name)
  (handler-bind ((simple-error (lambda (c)
				 (declare (ignore c))
				 (return-from class-direct-subclasses
				   nil))))
     (let* ((class (find-class class-name))
	    (subclasses (pcl:class-direct-subclasses class)))
       (mapcar #'(lambda (x)
		   (symbol-name (pcl:class-name x)))
	       subclasses))))

(defimplementation class-direct-superclasses (class-name)
  (handler-bind ((simple-error (lambda (c)
				 (declare (ignore c))
				 (return-from class-direct-superclasses
				   nil))))
     (let* ((class (find-class class-name))
	    (superclasses (pcl:class-direct-superclasses class)))
       (mapcar #'(lambda (x)
		   (symbol-name (pcl:class-name x)))
	       superclasses))))

 The handler is to catch the errors of find-class with a class that
doesn't exist. Maybe there's a better behaviour in that situation.


 I have a generic browser in emacs that can be used to see the stuff
above, xrefs,etc. I'll release the code soon.

 Rui Patrocínio