Get the get field from a expression-result-err.
(expression-result-err->get acl2::x) → get
This is an ordinary field accessor created by fty::defprod.
Function:
(defun expression-result-err->get$inline (acl2::x) (declare (xargs :guard (expression-resultp acl2::x))) (declare (xargs :guard (equal (expression-result-kind acl2::x) :err))) (let ((__function__ 'expression-result-err->get)) (declare (ignorable __function__)) (mbe :logic (b* ((acl2::x (and (equal (expression-result-kind acl2::x) :err) acl2::x))) (fty::reserr-fix acl2::x)) :exec acl2::x)))
Theorem:
(defthm reserrp-of-expression-result-err->get (b* ((get (expression-result-err->get$inline acl2::x))) (reserrp get)) :rule-classes :rewrite)
Theorem:
(defthm expression-result-err->get$inline-of-expression-result-fix-x (equal (expression-result-err->get$inline (expression-result-fix acl2::x)) (expression-result-err->get$inline acl2::x)))
Theorem:
(defthm expression-result-err->get$inline-expression-result-equiv-congruence-on-x (implies (expression-result-equiv acl2::x x-equiv) (equal (expression-result-err->get$inline acl2::x) (expression-result-err->get$inline x-equiv))) :rule-classes :congruence)
Theorem:
(defthm expression-result-err->get-when-wrong-kind (implies (not (equal (expression-result-kind acl2::x) :err)) (equal (expression-result-err->get acl2::x) (fty::reserr-fix nil))))