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• Verilog-2005-ports

Vl-parse-nonnull-port

Matches port, except for the empty port.

Signature

(vl-parse-nonnull-port &key (tokstream 'tokstream) (config 'config)) 
  → 
(mv errmsg? value new-tokstream)

Arguments

config — Guard (vl-loadconfig-p config).

Definitions and Theorems

Function: vl-parse-nonnull-port-fn

(defun vl-parse-nonnull-port-fn (tokstream config)
 (declare (xargs :stobjs (tokstream)))
 (declare (xargs :guard (vl-loadconfig-p config)))
 (declare (ignorable config))
 (let ((__function__ 'vl-parse-nonnull-port))
  (declare (ignorable __function__))
  (seq
   tokstream (loc := (vl-current-loc))
   (unless
       (vl-is-token? :vl-dot)
       (pexpr := (vl-parse-port-expression))
       (return (cond ((and (vl-atom-p pexpr)
                           (vl-id-p (vl-atom->guts pexpr)))
                      (make-vl-regularport
                           :name (vl-id->name (vl-atom->guts pexpr))
                           :expr pexpr
                           :loc loc))
                     (t (make-vl-regularport :name nil
                                             :expr pexpr
                                             :loc loc)))))
   (:= (vl-match))
   (id := (vl-match-token :vl-idtoken))
   (:= (vl-match-token :vl-lparen))
   (unless (vl-is-token? :vl-rparen)
           (pexpr := (vl-parse-port-expression)))
   (:= (vl-match-token :vl-rparen))
   (return (make-vl-regularport :name (vl-idtoken->name id)
                                :expr pexpr
                                :loc loc)))))

Theorem: vl-parse-nonnull-port-fails-gracefully

(defthm vl-parse-nonnull-port-fails-gracefully
  (implies (mv-nth 0 (vl-parse-nonnull-port))
           (not (mv-nth 1 (vl-parse-nonnull-port)))))

Theorem: vl-warning-p-of-vl-parse-nonnull-port

(defthm vl-warning-p-of-vl-parse-nonnull-port
  (iff (vl-warning-p (mv-nth 0 (vl-parse-nonnull-port)))
       (mv-nth 0 (vl-parse-nonnull-port))))

Theorem: vl-parse-nonnull-port-result

(defthm vl-parse-nonnull-port-result
  (implies (and t)
           (equal (vl-port-p (mv-nth 1 (vl-parse-nonnull-port)))
                  (not (mv-nth 0 (vl-parse-nonnull-port))))))

Theorem: vl-parse-nonnull-port-count-strong

(defthm vl-parse-nonnull-port-count-strong
 (and
     (<= (vl-tokstream-measure
              :tokstream (mv-nth 2 (vl-parse-nonnull-port)))
         (vl-tokstream-measure))
     (implies (not (mv-nth 0 (vl-parse-nonnull-port)))
              (< (vl-tokstream-measure
                      :tokstream (mv-nth 2 (vl-parse-nonnull-port)))
                 (vl-tokstream-measure))))
 :rule-classes ((:rewrite) (:linear)))