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Fun-adeclor

Fun-adeclorp

Recognizer for fun-adeclor structures.

Signature
(fun-adeclorp x) → *

Definitions and Theorems

Function: fun-adeclorp

(defun fun-adeclorp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'fun-adeclorp))
    (declare (ignorable __function__))
    (and (consp x)
         (cond ((or (atom x) (eq (car x) :base))
                (and (true-listp (cdr x))
                     (eql (len (cdr x)) 1)
                     (b* ((params (std::da-nth 0 (cdr x))))
                       (param-declon-listp params))))
               (t (and (eq (car x) :pointer)
                       (and (true-listp (cdr x))
                            (eql (len (cdr x)) 1))
                       (b* ((decl (std::da-nth 0 (cdr x))))
                         (fun-adeclorp decl))))))))

Theorem: consp-when-fun-adeclorp

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