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Message

Message-kind

Get the kind (tag) of a message structure.

Signature
(message-kind x) → kind
Arguments: x — Guard (messagep x).

Definitions and Theorems

Function: message-kind$inline

(defun message-kind$inline (x)
  (declare (xargs :guard (messagep x)))
  (let ((__function__ 'message-kind))
    (declare (ignorable __function__))
    (mbe :logic (cond ((or (atom x) (eq (car x) :proposal))
                       :proposal)
                      ((eq (car x) :endorsement) :endorsement)
                      (t :certificate))
         :exec (car x))))

Theorem: message-kind-possibilities

(defthm message-kind-possibilities
  (or (equal (message-kind x) :proposal)
      (equal (message-kind x) :endorsement)
      (equal (message-kind x) :certificate))
  :rule-classes
  ((:forward-chaining :trigger-terms ((message-kind x)))))