Get the arg field from a vl-unary.
This is an ordinary field accessor created by defprod.
Function:
(defun vl-unary->arg$inline (x) (declare (xargs :guard (vl-expr-p x))) (declare (xargs :guard (equal (vl-expr-kind x) :vl-unary))) (let ((__function__ 'vl-unary->arg)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and (equal (vl-expr-kind x) :vl-unary) x))) (vl-expr-fix (std::prod-car (std::prod-cdr (cdr x))))) :exec (std::prod-car (std::prod-cdr (cdr x))))))
Theorem:
(defthm vl-expr-p-of-vl-unary->arg (b* ((arg (vl-unary->arg$inline x))) (vl-expr-p arg)) :rule-classes :rewrite)
Theorem:
(defthm vl-unary->arg$inline-of-vl-expr-fix-x (equal (vl-unary->arg$inline (vl-expr-fix x)) (vl-unary->arg$inline x)))
Theorem:
(defthm vl-unary->arg$inline-vl-expr-equiv-congruence-on-x (implies (vl-expr-equiv x x-equiv) (equal (vl-unary->arg$inline x) (vl-unary->arg$inline x-equiv))) :rule-classes :congruence)
Theorem:
(defthm vl-unary->arg-when-wrong-kind (implies (not (equal (vl-expr-kind x) :vl-unary)) (equal (vl-unary->arg x) (vl-expr-fix nil))))