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Vl-plainarg

Vl-plainarg->dir

Get the dir field from a vl-plainarg.

Signature
(vl-plainarg->dir x) → dir
Arguments: x — Guard (vl-plainarg-p x).
Returns: dir — Type (vl-maybe-direction-p dir).

This is an ordinary field accessor created by defprod.

Definitions and Theorems

Function: vl-plainarg->dir$inline

(defun vl-plainarg->dir$inline (x)
  (declare (xargs :guard (vl-plainarg-p x)))
  (declare (xargs :guard t))
  (let ((__function__ 'vl-plainarg->dir))
    (declare (ignorable __function__))
    (mbe :logic
         (b* ((x (and t x)))
           (vl-maybe-direction-fix
                (std::prod-car (std::prod-cdr (cdr x)))))
         :exec (std::prod-car (std::prod-cdr (cdr x))))))

Theorem: vl-maybe-direction-p-of-vl-plainarg->dir

(defthm vl-maybe-direction-p-of-vl-plainarg->dir
  (b* ((dir (vl-plainarg->dir$inline x)))
    (vl-maybe-direction-p dir))
  :rule-classes :rewrite)

Theorem: vl-plainarg->dir$inline-of-vl-plainarg-fix-x

(defthm vl-plainarg->dir$inline-of-vl-plainarg-fix-x
  (equal (vl-plainarg->dir$inline (vl-plainarg-fix x))
         (vl-plainarg->dir$inline x)))

Theorem: vl-plainarg->dir$inline-vl-plainarg-equiv-congruence-on-x

(defthm vl-plainarg->dir$inline-vl-plainarg-equiv-congruence-on-x
  (implies (vl-plainarg-equiv x x-equiv)
           (equal (vl-plainarg->dir$inline x)
                  (vl-plainarg->dir$inline x-equiv)))
  :rule-classes :congruence)