Get the original operator from a non-atomic expression.
Function:
(defun vl-nonatom->original-operator (x) (declare (xargs :guard (vl-expr-p x))) (declare (xargs :guard (not (vl-atom-p x)))) (let ((__function__ 'vl-nonatom->original-operator)) (declare (ignorable __function__)) (b* ((atts (vl-nonatom->atts x)) (orig (cdr (hons-assoc-equal "VL_ORIG_EXPR" atts))) ((when (and orig (not (vl-fast-atom-p orig)))) (vl-nonatom->op orig))) (vl-nonatom->op x))))
Theorem:
(defthm vl-op-p-of-vl-nonatom->original-operator (b* ((op (vl-nonatom->original-operator x))) (vl-op-p op)) :rule-classes :rewrite)
Theorem:
(defthm vl-nonatom->original-operator-of-vl-expr-fix-x (equal (vl-nonatom->original-operator (vl-expr-fix x)) (vl-nonatom->original-operator x)))
Theorem:
(defthm vl-nonatom->original-operator-vl-expr-equiv-congruence-on-x (implies (vl-expr-equiv x x-equiv) (equal (vl-nonatom->original-operator x) (vl-nonatom->original-operator x-equiv))) :rule-classes :congruence)