Get the superclass? field from a jclass.
(jclass->superclass? x) → superclass?
This is an ordinary field accessor created by fty::defprod.
Function:
(defun jclass->superclass?$inline (x) (declare (xargs :guard (jclassp x))) (declare (xargs :guard t)) (let ((__function__ 'jclass->superclass?)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and t x))) (acl2::maybe-string-fix (cdr (std::da-nth 6 x)))) :exec (cdr (std::da-nth 6 x)))))
Theorem:
(defthm maybe-stringp-of-jclass->superclass? (b* ((superclass? (jclass->superclass?$inline x))) (maybe-stringp superclass?)) :rule-classes :rewrite)
Theorem:
(defthm jclass->superclass?$inline-of-jclass-fix-x (equal (jclass->superclass?$inline (jclass-fix x)) (jclass->superclass?$inline x)))
Theorem:
(defthm jclass->superclass?$inline-jclass-equiv-congruence-on-x (implies (jclass-equiv x x-equiv) (equal (jclass->superclass?$inline x) (jclass->superclass?$inline x-equiv))) :rule-classes :congruence)