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Cgraph-value

Cgraph-value-p

Recognizer for cgraph-value structures.

Signature
(cgraph-value-p x) → *

Definitions and Theorems

Function: cgraph-value-p

(defun cgraph-value-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'cgraph-value-p))
    (declare (ignorable __function__))
    (and (mbe :logic (and (alistp x)
                          (equal (strip-cars x)
                                 '(val priority rule)))
              :exec (fty::alist-with-carsp x '(val priority rule)))
         (b* ((?val (cdr (std::da-nth 0 x)))
              (priority (cdr (std::da-nth 1 x)))
              (rule (cdr (std::da-nth 2 x))))
           (and (natp priority) (symbolp rule))))))

Theorem: consp-when-cgraph-value-p

(defthm consp-when-cgraph-value-p
  (implies (cgraph-value-p x) (consp x))
  :rule-classes :compound-recognizer)