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Fgl-rune

Fgl-rune-kind

Get the kind (tag) of a fgl-rune structure.

Signature
(fgl-rune-kind x) → kind
Arguments: x — Guard (fgl-rune-p x).

Definitions and Theorems

Function: fgl-rune-kind$inline

(defun fgl-rune-kind$inline (x)
  (declare (xargs :guard (fgl-rune-p x)))
  (let ((__function__ 'fgl-rune-kind))
    (declare (ignorable __function__))
    (mbe :logic (cond ((or (atom x) (eq (car x) :rewrite))
                       :rewrite)
                      ((eq (car x) :definition) :definition)
                      ((eq (car x) :formula) :formula)
                      ((eq (car x) :primitive) :primitive)
                      (t :meta))
         :exec (car x))))

Theorem: fgl-rune-kind-possibilities

(defthm fgl-rune-kind-possibilities
  (or (equal (fgl-rune-kind x) :rewrite)
      (equal (fgl-rune-kind x) :definition)
      (equal (fgl-rune-kind x) :formula)
      (equal (fgl-rune-kind x) :primitive)
      (equal (fgl-rune-kind x) :meta))
  :rule-classes
  ((:forward-chaining :trigger-terms ((fgl-rune-kind x)))))