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Reserr

Reserrp

Recognizer for reserr structures.

Signature
(reserrp x) → *

Definitions and Theorems

Function: reserrp

(defun
    reserrp (x)
    (declare (xargs :guard t))
    (let ((__function__ 'reserrp))
         (declare (ignorable __function__))
         (and (consp x)
              (eq (car x) :error)
              (mbe :logic (and (alistp (cdr x))
                               (equal (strip-cars (cdr x)) '(info)))
                   :exec (alist-with-carsp (cdr x) '(info)))
              (b* ((info (cdr (std::da-nth 0 (cdr x)))))
                  (acl2::any-p info)))))

Theorem: consp-when-reserrp

(defthm consp-when-reserrp
        (implies (reserrp x) (consp x))
        :rule-classes :compound-recognizer)