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Lifetime

Lifetime-kind

Get the kind (tag) of a lifetime structure.

Signature
(lifetime-kind x) → kind
Arguments: x — Guard (lifetimep x).

Definitions and Theorems

Function: lifetime-kind$inline

(defun lifetime-kind$inline (x)
  (declare (xargs :guard (lifetimep x)))
  (mbe :logic (cond ((or (atom x) (eq (car x) :static))
                     :static)
                    ((eq (car x) :thread) :thread)
                    (t :auto))
       :exec (car x)))

Theorem: lifetime-kind-possibilities

(defthm lifetime-kind-possibilities
  (or (equal (lifetime-kind x) :static)
      (equal (lifetime-kind x) :thread)
      (equal (lifetime-kind x) :auto))
  :rule-classes
  ((:forward-chaining :trigger-terms ((lifetime-kind x)))))