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Fun-declor

Fun-declorp

Recognizer for fun-declor structures.

Signature
(fun-declorp x) → *

Definitions and Theorems

Function: fun-declorp

(defun fun-declorp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'fun-declorp))
    (declare (ignorable __function__))
    (and (consp x)
         (cond ((or (atom x) (eq (car x) :base))
                (and (true-listp (cdr x))
                     (eql (len (cdr x)) 2)
                     (b* ((name (std::da-nth 0 (cdr x)))
                          (params (std::da-nth 1 (cdr x))))
                       (and (identp name)
                            (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-declorp decl))))))))

Theorem: consp-when-fun-declorp

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