		Search-engine friendly clone of the ACL2 documentation.

Fty-info

Fty-info-p

Recognizer for fty-info structures.

Signature
(fty-info-p x) → *

Definitions and Theorems

Function: fty-info-p

(defun fty-info-p (x)
 (declare (xargs :guard t))
 (let ((acl2::__function__ 'fty-info-p))
  (declare (ignorable acl2::__function__))
  (and
   (mbe
     :logic (and (alistp x)
                 (equal (strip-cars x)
                        '(name category type guards returns)))
     :exec
     (fty::alist-with-carsp x '(name category type guards returns)))
   (b* ((name (cdr (std::da-nth 0 x)))
        (category (cdr (std::da-nth 1 x)))
        (type (cdr (std::da-nth 2 x)))
        (guards (cdr (std::da-nth 3 x)))
        (returns (cdr (std::da-nth 4 x))))
     (and (symbolp name)
          (symbolp category)
          (symbolp type)
          (symbol-listp guards)
          (symbolp returns))))))

Theorem: consp-when-fty-info-p

(defthm consp-when-fty-info-p
  (implies (fty-info-p x) (consp x))
  :rule-classes :compound-recognizer)