Match a
(vl-parse-clocking-block-item &key (tokstream 'tokstream) (config 'config)) → (mv errmsg? value new-tokstream)
SystemVerilog-2012 Grammar:
clocking_item ::= 'default' default_skew ';' | clocking_direction list_of_clocking_decl_assign ';' | { attribute_instance } assertion_item_declaration
Function:
(defun vl-parse-clocking-block-item-fn (tokstream config) (declare (xargs :stobjs (tokstream))) (declare (xargs :guard (vl-loadconfig-p config))) (declare (ignorable config)) (let ((__function__ 'vl-parse-clocking-block-item)) (declare (ignorable __function__)) (cond ((vl-is-token? :vl-kwd-default) (vl-parse-default-skew-item)) ((vl-is-some-token? '(:vl-kwd-input :vl-kwd-output :vl-kwd-inout)) (seq tokstream (head := (vl-parse-clocking-direction)) (items := (vl-parse-list-of-clocking-decl-assigns head)) (:= (vl-match-token :vl-semi)) (return items))) (t (seq tokstream (atts := (vl-parse-0+-attribute-instances)) (when (vl-is-token? :vl-kwd-property) (property := (vl-parse-property-declaration)) (return (let ((stupid-hack-to-use-atts atts)) (declare (ignore stupid-hack-to-use-atts)) (list property)))) (when (vl-is-token? :vl-kwd-sequence) (sequence := (vl-parse-sequence-declaration)) (return (list sequence))) (when (vl-is-token? :vl-kwd-let) (return-raw (vl-parse-error "BOZO not yet implemented: let declarations"))) (return-raw (vl-parse-error "Expected default, clocking assignment, or assertion item")))))))
Theorem:
(defthm vl-parse-clocking-block-item-fails-gracefully (implies (mv-nth 0 (vl-parse-clocking-block-item)) (not (mv-nth 1 (vl-parse-clocking-block-item)))))
Theorem:
(defthm vl-warning-p-of-vl-parse-clocking-block-item (iff (vl-warning-p (mv-nth 0 (vl-parse-clocking-block-item))) (mv-nth 0 (vl-parse-clocking-block-item))))
Theorem:
(defthm vl-parse-clocking-block-item-result (implies (and t) (vl-clocking-block-item-list-p (mv-nth 1 (vl-parse-clocking-block-item)))))
Theorem:
(defthm vl-parse-clocking-block-item-true-listp (true-listp (mv-nth 1 (vl-parse-clocking-block-item))) :rule-classes :type-prescription)
Theorem:
(defthm vl-parse-clocking-block-item-count-strong (and (<= (vl-tokstream-measure :tokstream (mv-nth 2 (vl-parse-clocking-block-item))) (vl-tokstream-measure)) (implies (not (mv-nth 0 (vl-parse-clocking-block-item))) (< (vl-tokstream-measure :tokstream (mv-nth 2 (vl-parse-clocking-block-item))) (vl-tokstream-measure)))) :rule-classes ((:rewrite) (:linear)))