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Sd-key

Sd-key-p

Recognizer for sd-key structures.

Signature
(sd-key-p x) → *

Definitions and Theorems

Function: sd-key-p

(defun sd-key-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'sd-key-p))
    (declare (ignorable __function__))
    (and (consp x)
         (eq (car x) :sd-key)
         (consp (cdr x))
         (consp (cdr (cdr x)))
         (b* ((pat (car (cdr x)))
              (index (car (cdr (cdr x))))
              (orig (cdr (cdr (cdr x)))))
           (and (stringp pat)
                (maybe-natp index)
                (stringp orig))))))

Theorem: consp-when-sd-key-p

(defthm consp-when-sd-key-p
  (implies (sd-key-p x) (consp x))
  :rule-classes :compound-recognizer)