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