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Vl-distitem

Vl-distitem-p

Recognizer for vl-distitem structures.

Signature
(vl-distitem-p x) → *

Definitions and Theorems

Function: vl-distitem-p

(defun vl-distitem-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'vl-distitem-p))
    (declare (ignorable __function__))
    (and (consp x)
         (eq (car x) :vl-distitem)
         (std::prod-consp (cdr x))
         (std::prod-consp (std::prod-car (cdr x)))
         (std::prod-consp (std::prod-cdr (cdr x)))
         (b* ((left (std::prod-car (std::prod-car (cdr x))))
              (right (std::prod-cdr (std::prod-car (cdr x))))
              (type (std::prod-car (std::prod-cdr (cdr x))))
              (weight (std::prod-cdr (std::prod-cdr (cdr x)))))
           (and (vl-expr-p left)
                (vl-maybe-expr-p right)
                (vl-distweighttype-p type)
                (vl-expr-p weight))))))

Theorem: consp-when-vl-distitem-p

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