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Backtrace-frame

Backtrace-frame-p

Recognizer for backtrace-frame structures.

Signature
(backtrace-frame-p x) → *

Definitions and Theorems

Function: backtrace-frame-p

(defun backtrace-frame-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'backtrace-frame-p))
    (declare (ignorable __function__))
    (and (true-listp x)
         (eql (len x) 3)
         (b* ((index (std::da-nth 0 x))
              (rune (std::da-nth 1 x))
              (objs (std::da-nth 2 x)))
           (and (natp index)
                (maybe-fgl-generic-rune-p rune)
                (fgl-object-bindings-p objs))))))

Theorem: consp-when-backtrace-frame-p

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