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Svl-occ

Svl-occ-p

Recognizer for svl-occ structures.

Signature
(svl-occ-p x) → *

Definitions and Theorems

Function: svl-occ-p

(defun svl-occ-p (x)
  (declare (xargs :guard t))
  (let ((acl2::__function__ 'svl-occ-p))
    (declare (ignorable acl2::__function__))
    (and (consp x)
         (cond ((or (atom x) (eq (car x) :assign))
                (and (true-listp (cdr x))
                     (eql (len (cdr x)) 2)
                     (b* ((output (std::da-nth 0 (cdr x)))
                          (svex (std::da-nth 1 (cdr x))))
                       (and (sv::svar-p output)
                            (svex-p svex)))))
               (t (and (eq (car x) :module)
                       (and (true-listp (cdr x))
                            (eql (len (cdr x)) 3))
                       (b* ((inputs (std::da-nth 0 (cdr x)))
                            (outputs (std::da-nth 1 (cdr x)))
                            (name (std::da-nth 2 (cdr x))))
                         (and (svexlist-p inputs)
                              (wire-list-listp outputs)
                              (sv::modname-p name)))))))))

Theorem: consp-when-svl-occ-p

(defthm consp-when-svl-occ-p
  (implies (svl-occ-p x) (consp x))
  :rule-classes :compound-recognizer)