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Vl-udpedge

Vl-udpedge-p

Recognizer for vl-udpedge structures.

Signature
(vl-udpedge-p x) → *

Definitions and Theorems

Function: vl-udpedge-p

(defun vl-udpedge-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'vl-udpedge-p))
    (declare (ignorable __function__))
    (and (consp x)
         (eq (car x) :vl-udplevel)
         (std::prod-consp (cdr x))
         (b* ((prev (std::prod-car (cdr x)))
              (next (std::prod-cdr (cdr x))))
           (and (vl-udpsymbol-p prev)
                (vl-udpsymbol-p next))))))

Theorem: consp-when-vl-udpedge-p

(defthm consp-when-vl-udpedge-p
  (implies (vl-udpedge-p x) (consp x))
  :rule-classes :compound-recognizer)