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Minor-frame

Minor-frame-p

Recognizer for minor-frame structures.

Signature
(minor-frame-p x) → *

Definitions and Theorems

Function: minor-frame-p

(defun minor-frame-p (x)
 (declare (xargs :guard t))
 (let ((__function__ 'minor-frame-p))
  (declare (ignorable __function__))
  (and
   (mbe
      :logic (and (alistp x)
                  (equal (strip-cars x)
                         '(bindings scratch term term-index)))
      :exec
      (fty::alist-with-carsp x '(bindings scratch term term-index)))
   (b* ((bindings (cdr (std::da-nth 0 x)))
        (scratch (cdr (std::da-nth 1 x)))
        (term (cdr (std::da-nth 2 x)))
        (term-index (cdr (std::da-nth 3 x))))
     (and (fgl-object-bindings-p bindings)
          (scratchlist-p scratch)
          (pseudo-termp term)
          (acl2::maybe-natp term-index))))))

Theorem: consp-when-minor-frame-p

(defthm consp-when-minor-frame-p
  (implies (minor-frame-p x) (consp x))
  :rule-classes :compound-recognizer)