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Assertion

Assertionp

Recognizer for assertion structures.

Signature
(assertionp x) → *

Definitions and Theorems

Function: assertionp

(defun assertionp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'assertionp))
    (declare (ignorable __function__))
    (and (mbe :logic (and (alistp x)
                          (equal (strip-cars x) '(asg constr)))
              :exec (fty::alist-with-carsp x '(asg constr)))
         (b* ((asg (cdr (std::da-nth 0 x)))
              (constr (cdr (std::da-nth 1 x))))
           (and (assignmentp asg)
                (constraintp constr))))))

Theorem: consp-when-assertionp

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