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• Sv-ansi-portdecls
• Parse-port-types

Vl-parse-ansi-port-header

Matches interface_port_header, net_port_type, or variable_port_type.

Signature

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

Arguments

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

See especially the discussion of "ruling out interfaces" in parse-port-types.

Definitions and Theorems

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

(defun vl-parse-ansi-port-header-fn (tokstream config)
 (declare (xargs :stobjs (tokstream)))
 (declare (xargs :guard (vl-loadconfig-p config)))
 (declare (ignorable config))
 (let ((__function__ 'vl-parse-ansi-port-header))
  (declare (ignorable __function__))
  (seq
   tokstream
   (when
    (vl-is-token? :vl-kwd-interface)
    (return-raw
     (vl-parse-error "BOZO implement explicit 'interface' ports.")))
   (when
    (and
       (vl-is-token? :vl-idtoken)
       (vl-lookahead-is-token? :vl-dot (cdr (vl-tokstream->tokens)))
       (vl-lookahead-is-token?
            :vl-idtoken (cddr (vl-tokstream->tokens))))
    (iface := (vl-match))
    (:= (vl-match))
    (modport := (vl-match))
    (return (make-vl-parsed-interface-head
                 :ifname (vl-idtoken->name iface)
                 :modport (vl-idtoken->name modport))))
   (when
    (and (vl-is-token? :vl-idtoken)
         (vl-lookahead-is-token?
              :vl-idtoken (cdr (vl-tokstream->tokens)))
         (not (vl-parsestate-is-user-defined-type-p
                   (vl-idtoken->name (car (vl-tokstream->tokens)))
                   (vl-tokstream->pstate))))
    (iface := (vl-match))
    (return
     (make-vl-parsed-interface-head :ifname (vl-idtoken->name iface)
                                    :modport nil)))
   (ans := (vl-parse-port-declaration-head-2012))
   (return ans))))

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

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

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

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

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

(defthm vl-parse-ansi-port-header-result
 (implies
  (and t)
  (equal
      (vl-parsed-ansi-head-p (mv-nth 1 (vl-parse-ansi-port-header)))
      (not (mv-nth 0 (vl-parse-ansi-port-header))))))

Theorem: vl-parse-ansi-port-header-count-weak

(defthm vl-parse-ansi-port-header-count-weak
  (<= (vl-tokstream-measure
           :tokstream (mv-nth 2 (vl-parse-ansi-port-header)))
      (vl-tokstream-measure))
  :rule-classes ((:rewrite) (:linear)))