;;;--------------------------------------------------------------------------
;;; Locatives.
-(export '(loc locp))
-(defstruct (loc (:predicate locp) (:constructor make-loc (reader writer)))
+(export '(locative locativep))
+(defstruct (locative (:predicate locativep)
+ (:constructor make-locative (reader writer))
+ (:conc-name loc-))
"Locative data type. See `locf' and `ref'."
(reader nil :type function)
(writer nil :type function))
(valtmps valforms newtmps setform getform)
(get-setf-expansion place env)
`(let* (,@(mapcar #'list valtmps valforms))
- (make-loc (lambda () ,getform)
- (lambda (,@newtmps) ,setform)))))
+ (make-locative (lambda () ,getform)
+ (lambda (,@newtmps) ,setform)))))
(export 'ref)
(declaim (inline ref (setf ref)))
except where overridden by INITARGS."
(apply #'copy-instance-using-class (class-of object) object initargs))
+(export 'find-eql-specialized-method)
+(defun find-eql-specialized-method (function arg object)
+ "Return a method defined on FUNCTION whose ARGth argument is
+ `eql'-specialized on OBJECT."
+ (find-if (lambda (method)
+ (let ((spec (nth arg (method-specializers method))))
+ (and spec
+ (typep spec 'eql-specializer)
+ (eq (eql-specializer-object spec) object))))
+ (generic-function-methods function)))
+
(export '(generic-function-methods method-specializers
eql-specializer eql-specializer-object))