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Vl-genbase

Vl-genbase->item

Get the item field from a vl-genbase.

Signature
(vl-genbase->item x) → item
Arguments: x — Guard (vl-genelement-p x).
Returns: item — Type (vl-modelement-p item).

This is an ordinary field accessor created by defprod.

Definitions and Theorems

Function: vl-genbase->item$inline

(defun vl-genbase->item$inline (x)
  (declare (xargs :guard (vl-genelement-p x)))
  (declare (xargs :guard (equal (vl-genelement-kind x)
                                :vl-genbase)))
  (let ((__function__ 'vl-genbase->item))
    (declare (ignorable __function__))
    (mbe :logic
         (b* ((x (and (equal (vl-genelement-kind x)
                             :vl-genbase)
                      x)))
           (vl-modelement-fix (cdr x)))
         :exec (cdr x))))

Theorem: vl-modelement-p-of-vl-genbase->item

(defthm vl-modelement-p-of-vl-genbase->item
  (b* ((item (vl-genbase->item$inline x)))
    (vl-modelement-p item))
  :rule-classes :rewrite)

Theorem: vl-genbase->item$inline-of-vl-genelement-fix-x

(defthm vl-genbase->item$inline-of-vl-genelement-fix-x
  (equal (vl-genbase->item$inline (vl-genelement-fix x))
         (vl-genbase->item$inline x)))

Theorem: vl-genbase->item$inline-vl-genelement-equiv-congruence-on-x

(defthm vl-genbase->item$inline-vl-genelement-equiv-congruence-on-x
  (implies (vl-genelement-equiv x x-equiv)
           (equal (vl-genbase->item$inline x)
                  (vl-genbase->item$inline x-equiv)))
  :rule-classes :congruence)

Theorem: vl-genbase->item-when-wrong-kind

(defthm vl-genbase->item-when-wrong-kind
  (implies (not (equal (vl-genelement-kind x)
                       :vl-genbase))
           (equal (vl-genbase->item x)
                  (vl-modelement-fix nil))))