+;;; The interface of BOGO-FUNs (previously implemented as
+;;; FUNCALLABLE-INSTANCEs) is just these two operations, so we can do
+;;; them with ordinary closures.
+;;;
+;;; KLUDGE: BOGO-FUNs are sorta weird, and MNA and I have both hacked
+;;; on this code without quite figuring out what they're for. (He
+;;; changed them to work after some changes in the IR1 interpreter
+;;; made functions not be built lazily, and I changed them so that
+;;; they don't need FUNCALLABLE-INSTANCE stuff, so that the F-I stuff
+;;; can become less general.) There may be further simplifications or
+;;; clarifications which could be done. -- WHN 2001-10-19
+(defun walker-info-to-bogo-fun (walker-info)
+ (lambda (magic-tag &rest rest)
+ (aver (not rest)) ; else someone is using me in an unexpected way
+ (aver (eql magic-tag *bogo-fun-magic-tag*)) ; else ditto
+ walker-info))
+(defun bogo-fun-to-walker-info (bogo-fun)
+ (declare (type function bogo-fun))
+ (funcall bogo-fun *bogo-fun-magic-tag*))