		Search-engine friendly clone of the ACL2 documentation.

Vars+modes

Vars+modes-p

Recognizer for vars+modes structures.

Signature
(vars+modes-p x) → *

Definitions and Theorems

Function: vars+modes-p

(defun vars+modes-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'vars+modes-p))
    (declare (ignorable __function__))
    (and (consp x)
         (eq (car x) :vars+modes)
         (mbe :logic (and (alistp (cdr x))
                          (equal (strip-cars (cdr x))
                                 '(vars modes)))
              :exec (fty::alist-with-carsp (cdr x)
                                           '(vars modes)))
         (b* ((vars (cdr (std::da-nth 0 (cdr x))))
              (modes (cdr (std::da-nth 1 (cdr x)))))
           (and (identifier-setp vars)
                (mode-setp modes))))))

Theorem: consp-when-vars+modes-p

(defthm consp-when-vars+modes-p
  (implies (vars+modes-p x) (consp x))
  :rule-classes :compound-recognizer)