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Vl-alias

Vl-alias-p

Recognizer for vl-alias structures.

Signature
(vl-alias-p x) → *

Definitions and Theorems

Function: vl-alias-p

(defun vl-alias-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'vl-alias-p))
    (declare (ignorable __function__))
    (and (consp x)
         (eq (car x) :vl-alias)
         (std::prod-consp (cdr x))
         (std::prod-consp (std::prod-car (cdr x)))
         (std::prod-consp (std::prod-cdr (cdr x)))
         (b* ((lhs (std::prod-car (std::prod-car (cdr x))))
              (rhs (std::prod-cdr (std::prod-car (cdr x))))
              (atts (std::prod-car (std::prod-cdr (cdr x))))
              (loc (std::prod-cdr (std::prod-cdr (cdr x)))))
           (and (vl-expr-p lhs)
                (vl-expr-p rhs)
                (vl-atts-p atts)
                (vl-location-p loc))))))

Theorem: consp-when-vl-alias-p

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