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Maybe-string-result

Maybe-string-result-kind

Get the kind (tag) of a maybe-string-result structure.

Signature
(maybe-string-result-kind x) → kind
Arguments: x — Guard (maybe-string-resultp x).

Definitions and Theorems

Function: maybe-string-result-kind$inline

(defun maybe-string-result-kind$inline (x)
  (declare (xargs :guard (maybe-string-resultp x)))
  (let ((__function__ 'maybe-string-result-kind))
    (declare (ignorable __function__))
    (cond ((maybe-stringp x) :ok)
          (t :err))))

Theorem: maybe-string-result-kind-possibilities

(defthm maybe-string-result-kind-possibilities
  (or (equal (maybe-string-result-kind x) :ok)
      (equal (maybe-string-result-kind x)
             :err))
  :rule-classes
  ((:forward-chaining
        :trigger-terms ((maybe-string-result-kind x)))))