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Oct-escape

Oct-escape-kind

Get the kind (tag) of a oct-escape structure.

Signature
(oct-escape-kind x) → kind
Arguments: x — Guard (oct-escapep x).

Definitions and Theorems

Function: oct-escape-kind$inline

(defun oct-escape-kind$inline (x)
  (declare (xargs :guard (oct-escapep x)))
  (let ((__function__ 'oct-escape-kind))
    (declare (ignorable __function__))
    (mbe :logic (cond ((or (atom x) (eq (car x) :one)) :one)
                      ((eq (car x) :two) :two)
                      (t :three))
         :exec (car x))))

Theorem: oct-escape-kind-possibilities

(defthm oct-escape-kind-possibilities
  (or (equal (oct-escape-kind x) :one)
      (equal (oct-escape-kind x) :two)
      (equal (oct-escape-kind x) :three))
  :rule-classes
  ((:forward-chaining :trigger-terms ((oct-escape-kind x)))))