Get the params field from a dirdeclor-function-params.
(dirdeclor-function-params->params x) → params
This is an ordinary field accessor created by fty::defprod.
Function:
(defun dirdeclor-function-params->params$inline (x) (declare (xargs :guard (dirdeclorp x))) (declare (xargs :guard (equal (dirdeclor-kind x) :function-params))) (let ((__function__ 'dirdeclor-function-params->params)) (declare (ignorable __function__)) (mbe :logic (b* ((x (and (equal (dirdeclor-kind x) :function-params) x))) (paramdecl-list-fix (std::da-nth 1 (cdr x)))) :exec (std::da-nth 1 (cdr x)))))
Theorem:
(defthm paramdecl-listp-of-dirdeclor-function-params->params (b* ((params (dirdeclor-function-params->params$inline x))) (paramdecl-listp params)) :rule-classes :rewrite)
Theorem:
(defthm dirdeclor-function-params->params$inline-of-dirdeclor-fix-x (equal (dirdeclor-function-params->params$inline (dirdeclor-fix x)) (dirdeclor-function-params->params$inline x)))
Theorem:
(defthm dirdeclor-function-params->params$inline-dirdeclor-equiv-congruence-on-x (implies (dirdeclor-equiv x x-equiv) (equal (dirdeclor-function-params->params$inline x) (dirdeclor-function-params->params$inline x-equiv))) :rule-classes :congruence)
Theorem:
(defthm dirdeclor-function-params->params-when-wrong-kind (implies (not (equal (dirdeclor-kind x) :function-params)) (equal (dirdeclor-function-params->params x) (paramdecl-list-fix nil))))