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Valid-ord-info

Valid-ord-infop

Recognizer for valid-ord-info structures.

Signature
(valid-ord-infop x) → *

Definitions and Theorems

Function: valid-ord-infop

(defun valid-ord-infop (x)
  (declare (xargs :guard t))
  (let ((__function__ 'valid-ord-infop))
    (declare (ignorable __function__))
    (and (consp x)
         (cond ((or (atom x) (eq (car x) :objfun))
                (and (true-listp (cdr x))
                     (eql (len (cdr x)) 3)
                     (b* ((type (std::da-nth 0 (cdr x)))
                          (linkage (std::da-nth 1 (cdr x)))
                          (defstatus (std::da-nth 2 (cdr x))))
                       (and (typep type)
                            (linkagep linkage)
                            (valid-defstatusp defstatus)))))
               ((eq (car x) :enumconst)
                (and (true-listp (cdr x))
                     (eql (len (cdr x)) 0)
                     (b* nil t)))
               (t (and (eq (car x) :typedef)
                       (and (true-listp (cdr x))
                            (eql (len (cdr x)) 0))
                       (b* nil t)))))))

Theorem: consp-when-valid-ord-infop

(defthm consp-when-valid-ord-infop
  (implies (valid-ord-infop x) (consp x))
  :rule-classes :compound-recognizer)