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Expdata-event-generation

Expdata-gen-new-fn-guard

Generate the guard of the new function.

Signature
(expdata-gen-new-fn-guard old$ arg-surjmaps predicate$ wrld) → new-guard
Arguments: old$ — Guard (symbolp old$).; arg-surjmaps — Guard (expdata-symbol-surjmap-alistp arg-surjmaps).; predicate$ — Guard (booleanp predicate$).; wrld — Guard (plist-worldp wrld).
Returns: new-guard — A pseudo-termp.

Definitions and Theorems

Function: expdata-gen-new-fn-guard

(defun expdata-gen-new-fn-guard (old$ arg-surjmaps predicate$ wrld)
 (declare
     (xargs :guard (and (symbolp old$)
                        (expdata-symbol-surjmap-alistp arg-surjmaps)
                        (booleanp predicate$)
                        (plist-worldp wrld))))
 (let ((__function__ 'expdata-gen-new-fn-guard))
  (declare (ignorable __function__))
  (b* ((x1...xn (formals old$ wrld))
       (newp-of-x1...xn
            (expdata-gen-newp-of-terms x1...xn arg-surjmaps)))
   (if predicate$ (conjoin newp-of-x1...xn)
     (b* ((old-guard (uguard old$ wrld))
          (old-guard-with-back-of-x1...xn
               (expdata-gen-subst-x1...xn-with-back-of-x1...xn
                    old-guard old$ arg-surjmaps wrld)))
       (conjoin (append newp-of-x1...xn
                        (list old-guard-with-back-of-x1...xn))))))))