Get the indent-level field from a pristate.
This is an ordinary field accessor created by fty::defprod.
Function:
(defun pristate->indent-level$inline (x) (declare (xargs :guard (pristatep x))) (declare (xargs :guard t)) (let ((__function__ 'pristate->indent-level)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and t x))) (nfix (cdr (std::da-nth 1 x)))) :exec (cdr (std::da-nth 1 x)))))
Theorem:
(defthm natp-of-pristate->indent-level (b* ((indent-level (pristate->indent-level$inline x))) (natp indent-level)) :rule-classes :rewrite)
Theorem:
(defthm pristate->indent-level$inline-of-pristate-fix-x (equal (pristate->indent-level$inline (pristate-fix x)) (pristate->indent-level$inline x)))
Theorem:
(defthm pristate->indent-level$inline-pristate-equiv-congruence-on-x (implies (pristate-equiv x x-equiv) (equal (pristate->indent-level$inline x) (pristate->indent-level$inline x-equiv))) :rule-classes :congruence)