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Var-sinfo

Var-sinfop

Recognizer for var-sinfo structures.

Signature
(var-sinfop x) → *

Definitions and Theorems

Function: var-sinfop

(defun var-sinfop (x)
  (declare (xargs :guard t))
  (let ((__function__ 'var-sinfop))
    (declare (ignorable __function__))
    (and (mbe :logic (and (alistp x)
                          (equal (strip-cars x)
                                 '(type defstatus)))
              :exec (fty::alist-with-carsp x '(type defstatus)))
         (b* ((type (cdr (std::da-nth 0 x)))
              (defstatus (cdr (std::da-nth 1 x))))
           (and (typep type)
                (var-defstatusp defstatus))))))

Theorem: consp-when-var-sinfop

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