		Search-engine friendly clone of the ACL2 documentation.

Apip

Recognizer for api structures.

Signature
(apip x) → *

Definitions and Theorems

Function: apip

(defun apip (x)
  (declare (xargs :guard t))
  (let ((__function__ 'apip))
    (declare (ignorable __function__))
    (and (consp x)
         (eq (car x) :api)
         (mbe :logic (and (alistp (cdr x))
                          (equal (strip-cars (cdr x))
                                 '(inputs output)))
              :exec (fty::alist-with-carsp (cdr x)
                                           '(inputs output)))
         (b* ((inputs (cdr (std::da-nth 0 (cdr x))))
              (output (cdr (std::da-nth 1 (cdr x)))))
           (and (funparam-listp inputs)
                (typep output))))))

Theorem: consp-when-apip

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