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Priopt

Prioptp

Recognizer for priopt structures.

Signature
(prioptp x) → *

Definitions and Theorems

Function: prioptp

(defun prioptp (x)
 (declare (xargs :guard t))
 (let ((__function__ 'prioptp))
  (declare (ignorable __function__))
  (and
   (mbe :logic (and (alistp x)
                    (equal (strip-cars x)
                           '(indent-size paren-nested-conds)))
        :exec
        (fty::alist-with-carsp x '(indent-size paren-nested-conds)))
   (b* ((indent-size (cdr (std::da-nth 0 x)))
        (paren-nested-conds (cdr (std::da-nth 1 x))))
     (and (posp indent-size)
          (booleanp paren-nested-conds))))))

Theorem: consp-when-prioptp

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