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• Parse-ports

Vl-parse-ansi-port-declaration-2005

Matches a port declaration (which may involve several comma-separated variable names), and creates an ansi-portdecl object for each of them.

Signature

(vl-parse-ansi-port-declaration-2005 
     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-2005-fn

(defun vl-parse-ansi-port-declaration-2005-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-2005))
  (declare (ignorable __function__))
  (seq
   tokstream
   (unless
        (vl-is-some-token? *vl-directions-kwds*)
        (return-raw (vl-parse-error "Expected a port direction")))
   (dir := (vl-parse-port-direction))
   (nettype := (vl-parse-optional-nettype))
   (when
    (and (eq dir :vl-output) (not nettype))
    (type := (vl-match-some-token
                  '(:vl-kwd-reg :vl-kwd-integer :vl-kwd-time)))
    (when (eq (vl-token->type type) :vl-kwd-reg)
          (when (vl-is-token? :vl-kwd-signed)
                (signed := (vl-match)))
          (when (vl-is-token? :vl-lbrack)
                (range := (vl-parse-range))))
    (id := (vl-match-token :vl-idtoken))
    (rest := (vl-parse-0+-port-identifiers-as-ansi-decls-2005))
    (return
     (cons
      (make-vl-ansi-portdecl
         :atts atts
         :dir dir
         :nettype nil
         :type (make-vl-coretype :name
                                 (case (vl-token->type type)
                                       (:vl-kwd-integer :vl-integer)
                                       (t :vl-time))
                                 :signedp
                                 (if signed t
                                   (eq (vl-token->type type)
                                       :vl-kwd-integer))
                                 :pdims (and range (list range)))
         :name (vl-idtoken->name id)
         :loc (vl-token->loc id))
      rest)))
   (unless
    nettype
    (return-raw
     (vl-parse-error
      "Expected a nettype after an 'input' or 'inout' declaration.")))
   (when (vl-is-token? :vl-kwd-signed)
         (signed := (vl-match)))
   (when (vl-is-token? :vl-lbrack)
         (range := (vl-parse-range)))
   (id := (vl-match-token :vl-idtoken))
   (rest := (vl-parse-0+-port-identifiers-as-ansi-decls-2005))
   (return
    (cons
       (make-vl-ansi-portdecl
            :atts atts
            :dir dir
            :nettype nettype
            :type (make-vl-coretype :name :vl-logic
                                    :signedp (and signed t)
                                    :pdims (and range (list range)))
            :name (vl-idtoken->name id)
            :loc (vl-token->loc id))
       rest)))))

Theorem: vl-parse-ansi-port-declaration-2005-fails-gracefully

(defthm vl-parse-ansi-port-declaration-2005-fails-gracefully
  (implies
       (mv-nth 0
               (vl-parse-ansi-port-declaration-2005 atts))
       (not (mv-nth 1
                    (vl-parse-ansi-port-declaration-2005 atts)))))

Theorem: vl-warning-p-of-vl-parse-ansi-port-declaration-2005

(defthm vl-warning-p-of-vl-parse-ansi-port-declaration-2005
 (iff
  (vl-warning-p (mv-nth 0
                        (vl-parse-ansi-port-declaration-2005 atts)))
  (mv-nth 0
          (vl-parse-ansi-port-declaration-2005 atts))))

Theorem: vl-parse-ansi-port-declaration-2005-result

(defthm vl-parse-ansi-port-declaration-2005-result
  (implies
       (and (force (vl-atts-p atts)))
       (vl-ansi-portdecllist-p
            (mv-nth 1
                    (vl-parse-ansi-port-declaration-2005 atts)))))

Theorem: vl-parse-ansi-port-declaration-2005-true-listp

(defthm vl-parse-ansi-port-declaration-2005-true-listp
  (true-listp (mv-nth 1
                      (vl-parse-ansi-port-declaration-2005 atts)))
  :rule-classes :type-prescription)

Theorem: vl-parse-ansi-port-declaration-2005-count-strong

(defthm vl-parse-ansi-port-declaration-2005-count-strong
 (and
  (<=
   (vl-tokstream-measure
     :tokstream (mv-nth 2
                        (vl-parse-ansi-port-declaration-2005 atts)))
   (vl-tokstream-measure))
  (implies
   (not (mv-nth 0
                (vl-parse-ansi-port-declaration-2005 atts)))
   (<
    (vl-tokstream-measure
     :tokstream (mv-nth 2
                        (vl-parse-ansi-port-declaration-2005 atts)))
    (vl-tokstream-measure))))
 :rule-classes ((:rewrite) (:linear)))