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• Fast-finding-by-name

Vl-vardecllist-alist

Extend an alist by binding the names of vl-vardecls to their definitions.

Signature

(vl-vardecllist-alist x acc) → alist

Arguments

x — Guard (vl-vardecllist-p x).

Returns

alist — Type (equal (vl-vardecl-alist-p alist) (vl-vardecl-alist-p acc)).

This can be used as an alternative to vl-find-vardecl when you need to perform a lot of lookups.

Definitions and Theorems

Function: vl-vardecllist-alist

(defun vl-vardecllist-alist (x acc)
  (declare (xargs :guard (vl-vardecllist-p x)))
  (let ((__function__ 'vl-vardecllist-alist))
    (declare (ignorable __function__))
    (if (atom x)
        acc
      (cons (cons (vl-vardecl->name (car x))
                  (vl-vardecl-fix (car x)))
            (vl-vardecllist-alist (cdr x) acc)))))

Theorem: return-type-of-vl-vardecllist-alist

(defthm return-type-of-vl-vardecllist-alist
  (b* ((alist (vl-vardecllist-alist x acc)))
    (equal (vl-vardecl-alist-p alist)
           (vl-vardecl-alist-p acc)))
  :rule-classes :rewrite)

Theorem: lookup-in-vl-vardecllist-alist-acc-elim

(defthm lookup-in-vl-vardecllist-alist-acc-elim
 (implies
     (syntaxp (not (equal acc ''nil)))
     (equal (hons-assoc-equal name (vl-vardecllist-alist x acc))
            (or (hons-assoc-equal name (vl-vardecllist-alist x nil))
                (hons-assoc-equal name acc)))))

Theorem: lookup-in-vl-vardecllist-alist-fast

(defthm lookup-in-vl-vardecllist-alist-fast
  (implies
       (stringp name)
       (equal (hons-assoc-equal name (vl-vardecllist-alist x nil))
              (let ((val (vl-find-vardecl name x)))
                (and val (cons name val))))))

Theorem: vl-vardecllist-alist-of-vl-vardecllist-fix-x

(defthm vl-vardecllist-alist-of-vl-vardecllist-fix-x
  (equal (vl-vardecllist-alist (vl-vardecllist-fix x)
                               acc)
         (vl-vardecllist-alist x acc)))

Theorem: vl-vardecllist-alist-vl-vardecllist-equiv-congruence-on-x

(defthm vl-vardecllist-alist-vl-vardecllist-equiv-congruence-on-x
  (implies (vl-vardecllist-equiv x x-equiv)
           (equal (vl-vardecllist-alist x acc)
                  (vl-vardecllist-alist x-equiv acc)))
  :rule-classes :congruence)