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Address

Addressp

Recognizer for address structures.

Signature
(addressp x) → *

Definitions and Theorems

Function: addressp

(defun addressp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'addressp))
    (declare (ignorable __function__))
    (and (mbe :logic (and (alistp x)
                          (equal (strip-cars x) '(unwrap)))
              :exec (fty::alist-with-carsp x '(unwrap)))
         (b* ((unwrap (cdr (std::da-nth 0 x))))
           (any-p unwrap)))))

Theorem: consp-when-addressp

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