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• Parse-ports

Vl-parse-ansi-port-declaration

Matches ansi_port_declaration. Peeks at the token after to make sure it's a comma or right paren, but doesn't consume it.

Signature

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

Arguments

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

Definitions and Theorems

Function: vl-parse-ansi-port-declaration-fn

(defun vl-parse-ansi-port-declaration-fn (atts tokstream config)
 (declare (xargs :stobjs (tokstream)))
 (declare (xargs :guard (vl-loadconfig-p config)))
 (declare (ignorable config))
 (declare (xargs :guard (vl-atts-p atts)))
 (let ((__function__ 'vl-parse-ansi-port-declaration))
  (declare (ignorable __function__))
  (seq
   tokstream
   (dir := (vl-parse-optional-port-direction))
   (nettype := (vl-parse-optional-nettype))
   (var := (vl-parse-optional-var-kwd))
   (return-raw
        (b* (((when (or dir nettype var))
              (vl-parse-ansi-regular-portdecl atts dir nettype var))
             ((when (vl-is-token? :vl-kwd-interface))
              (vl-parse-error
                   "BOZO implement explicit 'interface' ports."))
             (backup (vl-tokstream-save))
             ((mv err3 port tokstream)
              (vl-parse-ansi-interface-portdecl atts))
             ((unless err3) (mv nil port tokstream))
             (pos3 (vl-tokstream->position))
             (tokstream (vl-tokstream-restore backup))
             ((mv err port tokstream)
              (vl-parse-ansi-regular-portdecl atts dir nettype var))
             ((unless err) (mv nil port tokstream))
             (pos (vl-tokstream->position))
             (tokstream (vl-tokstream-restore backup))
             ((mv pos err)
              (vl-choose-parse-error pos err pos3 err3))
             (tokstream (vl-tokstream-update-position pos)))
          (mv err nil tokstream))))))

Theorem: vl-parse-ansi-port-declaration-fails-gracefully

(defthm vl-parse-ansi-port-declaration-fails-gracefully
  (implies (mv-nth 0 (vl-parse-ansi-port-declaration atts))
           (not (mv-nth 1
                        (vl-parse-ansi-port-declaration atts)))))

Theorem: vl-warning-p-of-vl-parse-ansi-port-declaration

(defthm vl-warning-p-of-vl-parse-ansi-port-declaration
  (iff (vl-warning-p (mv-nth 0
                             (vl-parse-ansi-port-declaration atts)))
       (mv-nth 0
               (vl-parse-ansi-port-declaration atts))))

Theorem: vl-parse-ansi-port-declaration-result

(defthm vl-parse-ansi-port-declaration-result
 (implies
      (and (force (vl-atts-p atts)))
      (equal (vl-ansi-portdecl-p
                  (mv-nth 1
                          (vl-parse-ansi-port-declaration atts)))
             (not (mv-nth 0
                          (vl-parse-ansi-port-declaration atts))))))

Theorem: vl-parse-ansi-port-declaration-count-strong

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