Matches
(vl-parse-clocking-direction &key (tokstream 'tokstream) (config 'config)) → (mv errmsg? value new-tokstream)
SystemVerilog Grammar:
clocking_direction ::= 'input' [ clocking_skew ] | 'output' [ clocking_skew ] | 'input' [ clocking_skew ] 'output' [ clocking_skew ] | 'inout'
Function:
(defun vl-parse-clocking-direction-fn (tokstream config) (declare (xargs :stobjs (tokstream))) (declare (xargs :guard (vl-loadconfig-p config))) (declare (ignorable config)) (let ((__function__ 'vl-parse-clocking-direction)) (declare (ignorable __function__)) (seq tokstream (when (vl-is-token? :vl-kwd-inout) (:= (vl-match)) (return (make-vl-clocking-direction-head :inp t :outp t :iskew nil :oskew nil))) (when (vl-is-token? :vl-kwd-output) (:= (vl-match)) (oskew := (vl-maybe-parse-clocking-skew)) (return (make-vl-clocking-direction-head :inp nil :outp t :iskew nil :oskew oskew))) (:= (vl-match-token :vl-kwd-input)) (iskew := (vl-maybe-parse-clocking-skew)) (when (vl-is-token? :vl-kwd-output) (output := (vl-match)) (oskew := (vl-maybe-parse-clocking-skew))) (return (make-vl-clocking-direction-head :inp t :outp (if output t nil) :iskew iskew :oskew oskew)))))
Theorem:
(defthm vl-parse-clocking-direction-fails-gracefully (implies (mv-nth 0 (vl-parse-clocking-direction)) (not (mv-nth 1 (vl-parse-clocking-direction)))))
Theorem:
(defthm vl-warning-p-of-vl-parse-clocking-direction (iff (vl-warning-p (mv-nth 0 (vl-parse-clocking-direction))) (mv-nth 0 (vl-parse-clocking-direction))))
Theorem:
(defthm vl-parse-clocking-direction-result (implies (and t) (equal (vl-clocking-direction-head-p (mv-nth 1 (vl-parse-clocking-direction))) (not (mv-nth 0 (vl-parse-clocking-direction))))))
Theorem:
(defthm vl-parse-clocking-direction-count-strong (and (<= (vl-tokstream-measure :tokstream (mv-nth 2 (vl-parse-clocking-direction))) (vl-tokstream-measure)) (implies (not (mv-nth 0 (vl-parse-clocking-direction))) (< (vl-tokstream-measure :tokstream (mv-nth 2 (vl-parse-clocking-direction))) (vl-tokstream-measure)))) :rule-classes ((:rewrite) (:linear)))