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(in-package #:mulk.objective-cl)
(defgeneric objc-eql (x y))
(defgeneric objc-equal (x y))
(defun truep (b)
(not (or (zerop b)
(null b))))
(defun id-eql (x y)
(pointer-eq (pointer-to x) (pointer-to y)))
(defun id-equal (x y)
(truep (if (typep x '(or id objc-class exception))
(invoke x :is-equal y)
(progn
(assert (typep y '(or id objc-class exception)))
(invoke y :is-equal x)))))
(defun objc-typep (x class-designator)
(objc-eql (invoke x 'class)
(etypecase x
(class x)
(id (invoke x 'class))
((or string symbol) (find-objc-class class-designator t)))))
(defmethod objc-eql (x y)
(cl:eql x y))
(defmethod objc-eql ((x id) y)
(id-eql x y))
(defmethod objc-eql (x (y id))
(id-eql x y))
(defmethod objc-eql ((x objc-class) y)
(id-eql x y))
(defmethod objc-eql (x (y objc-class))
(id-eql x y))
(defmethod objc-eql ((x exception) y)
(id-eql x y))
(defmethod objc-eql (x (y exception))
(id-eql x y))
(defmethod objc-eql ((x selector) (y selector))
(eql (selector-name x) (selector-name y)))
(defmethod objc-eql ((x selector) (y string))
(eql (selector-name x) y))
(defmethod objc-eql ((x string) (y selector))
(eql x (selector-name y)))
(defmethod objc-equal (x y)
(cl:equal x y))
(defmethod objc-equal ((x id) y)
(id-equal x y))
(defmethod objc-equal (x (y id))
(id-equal x y))
(defmethod objc-equal ((x objc-class) y)
(id-equal x y))
(defmethod objc-equal (x (y objc-class))
(id-equal x y))
(defmethod objc-equal ((x exception) y)
(id-equal x y))
(defmethod objc-equal (x (y exception))
(id-equal x y))
(defmethod objc-equal ((x selector) (y selector))
(equal (selector-name x) (selector-name y)))
(defmethod objc-equal ((x selector) (y string))
(equal (selector-name x) y))
(defmethod objc-equal ((x string) (y selector))
(equal x (selector-name y)))
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