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Lucid

Vl-normalize-scopestack

Signature
(vl-normalize-scopestack x) → new-x
Arguments: x — Guard (vl-scopestack-p x).
Returns: new-x — Type (vl-scopestack-p new-x).

Definitions and Theorems

Function: vl-normalize-scopestack

(defun vl-normalize-scopestack (x)
 (declare (xargs :guard (vl-scopestack-p x)))
 (let ((__function__ 'vl-normalize-scopestack))
  (declare (ignorable __function__))
  (b* ((x (vl-scopestack-fix x)))
   (vl-scopestack-case
     x
     :null x
     :global x
     :local (vl-scopestack-push
                 (case (tag x.top)
                       (:vl-module (vl-module->genblob x.top))
                       (:vl-interface (vl-interface->genblob x.top))
                       (otherwise x.top))
                 (vl-normalize-scopestack x.super))))))

Theorem: vl-scopestack-p-of-vl-normalize-scopestack

(defthm vl-scopestack-p-of-vl-normalize-scopestack
  (b* ((new-x (vl-normalize-scopestack x)))
    (vl-scopestack-p new-x))
  :rule-classes :rewrite)

Theorem: vl-normalize-scopestack-of-vl-scopestack-fix-x

(defthm vl-normalize-scopestack-of-vl-scopestack-fix-x
  (equal (vl-normalize-scopestack (vl-scopestack-fix x))
         (vl-normalize-scopestack x)))

Theorem: vl-normalize-scopestack-vl-scopestack-equiv-congruence-on-x

(defthm vl-normalize-scopestack-vl-scopestack-equiv-congruence-on-x
  (implies (vl-scopestack-equiv x x-equiv)
           (equal (vl-normalize-scopestack x)
                  (vl-normalize-scopestack x-equiv)))
  :rule-classes :congruence)