Get the get field from a maybe-string-result-err.
(maybe-string-result-err->get x) → get
This is an ordinary field accessor created by fty::defprod.
Function:
(defun maybe-string-result-err->get$inline (x) (declare (xargs :guard (maybe-string-resultp x))) (declare (xargs :guard (equal (maybe-string-result-kind x) :err))) (let ((__function__ 'maybe-string-result-err->get)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and (equal (maybe-string-result-kind x) :err) x))) (fty::reserr-fix x)) :exec x)))
Theorem:
(defthm reserrp-of-maybe-string-result-err->get (b* ((get (maybe-string-result-err->get$inline x))) (fty::reserrp get)) :rule-classes :rewrite)
Theorem:
(defthm maybe-string-result-err->get$inline-of-maybe-string-result-fix-x (equal (maybe-string-result-err->get$inline (maybe-string-result-fix x)) (maybe-string-result-err->get$inline x)))
Theorem:
(defthm maybe-string-result-err->get$inline-maybe-string-result-equiv-congruence-on-x (implies (maybe-string-result-equiv x x-equiv) (equal (maybe-string-result-err->get$inline x) (maybe-string-result-err->get$inline x-equiv))) :rule-classes :congruence)
Theorem:
(defthm maybe-string-result-err->get-when-wrong-kind (implies (not (equal (maybe-string-result-kind x) :err)) (equal (maybe-string-result-err->get x) (fty::reserr-fix nil))))