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Duperhs-check

Vl-make-duperhs-alist-aux

Signature
(vl-make-duperhs-alist-aux x alist) → new-alist
Arguments: x — Guard (vl-assignlist-p x).; alist — Guard (vl-duperhs-alistp alist).
Returns: new-alist — Type (vl-duperhs-alistp new-alist), given the guard.

Definitions and Theorems

Function: vl-make-duperhs-alist-aux

(defun vl-make-duperhs-alist-aux (x alist)
  (declare (xargs :guard (and (vl-assignlist-p x)
                              (vl-duperhs-alistp alist))))
  (let ((__function__ 'vl-make-duperhs-alist-aux))
    (declare (ignorable __function__))
    (b* (((when (atom x)) alist)
         (x1 (car x))
         ((vl-assign x1) x1)
         (rhs1 (hons-copy (vl-expr-strip x1.expr)))
         (look (hons-get rhs1 alist))
         (alist (hons-acons rhs1 (cons x1 (cdr look))
                            alist)))
      (vl-make-duperhs-alist-aux (cdr x)
                                 alist))))

Theorem: vl-duperhs-alistp-of-vl-make-duperhs-alist-aux

(defthm vl-duperhs-alistp-of-vl-make-duperhs-alist-aux
  (implies (and (vl-assignlist-p x)
                (vl-duperhs-alistp alist))
           (b* ((new-alist (vl-make-duperhs-alist-aux x alist)))
             (vl-duperhs-alistp new-alist)))
  :rule-classes :rewrite)