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• Parse-udps

Vl-parse-udp-output-declaration

Matches udp_output_declaration.

Signature

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

Arguments

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

udp_output_declaration ::= { attribute_instance } 'output' port_identifier
                         | { attribute_instance } 'output' 'reg' port_identifier [ '=' constant_expression ] ')

But BOZO I don't know what the constant_expression is for, so I don't implement the optional assignment part here.

Definitions and Theorems

Function: vl-parse-udp-output-declaration-fn

(defun vl-parse-udp-output-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-udp-output-declaration))
  (declare (ignorable __function__))
  (seq
   tokstream
   (:= (vl-match-token :vl-kwd-output))
   (when (vl-is-token? :vl-kwd-reg)
         (reg := (vl-match)))
   (id := (vl-match-token :vl-idtoken))
   (when
    (vl-is-token? :vl-equalsign)
    (return-raw
     (vl-parse-error
      "Assignments to UDP output reg declarations are not currently supported.")))
   (return (make-vl-portdecl :loc (vl-token->loc id)
                             :name (vl-idtoken->name id)
                             :dir :vl-output :type
                             (if reg *vl-plain-old-reg-type*
                               *vl-plain-old-logic-type*)
                             :atts atts)))))

Theorem: vl-parse-udp-output-declaration-fails-gracefully

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

Theorem: vl-warning-p-of-vl-parse-udp-output-declaration

(defthm vl-warning-p-of-vl-parse-udp-output-declaration
 (iff (vl-warning-p (mv-nth 0
                            (vl-parse-udp-output-declaration atts)))
      (mv-nth 0
              (vl-parse-udp-output-declaration atts))))

Theorem: vl-parse-udp-output-declaration-result

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

Theorem: vl-parse-udp-output-declaration-count-strong

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

Theorem: type-of-vl-parse-udp-output-declaration

(defthm type-of-vl-parse-udp-output-declaration
  (b* (((mv err val ?tokstream)
        (vl-parse-udp-output-declaration atts)))
    (implies (not err)
             (let ((type (vl-portdecl->type val)))
               (or (equal type *vl-plain-old-logic-type*)
                   (equal type *vl-plain-old-reg-type*)))))
  :rule-classes
  ((:forward-chaining
        :trigger-terms
        ((mv-nth 1
                 (vl-parse-udp-output-declaration atts))))))