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• Parse-netdecls

Vl-netdecls-error

Signature

(vl-netdecls-error nettype cstrength gstrength 
                   vectoredp scalaredp type delay assigns) 
 
  → 
*

Arguments

type — Guard (vl-datatype-p type).

assigns — Guard (vl-vardeclassignlist-p assigns).

Definitions and Theorems

Function: vl-netdecls-error

(defun vl-netdecls-error
       (nettype cstrength gstrength
                vectoredp scalaredp type delay assigns)
 (declare (xargs :guard (and (vl-datatype-p type)
                             (vl-vardeclassignlist-p assigns))))
 (let ((__function__ 'vl-netdecls-error))
  (declare (ignorable __function__))
  (cond
   ((and (not (eq nettype :vl-trireg))
         cstrength)
    "A non-trireg net illegally has a charge strength.")
   ((and vectoredp
         (not (vl-datatype->pdims type)))
    "A range-free net is illegally declared 'vectored'.")
   ((and scalaredp
         (not (vl-datatype->pdims type)))
    "A range-free net is illegally declared 'scalared'.")
   ((and (or (atom assigns)
             (not (vl-vardeclassign->rhs (car assigns))))
         gstrength)
    "A drive strength has been given to a net declaration, but is only
          valid on assignments.")
   ((vl-netdeclassigns-check-array-assigns assigns))
   ((and delay
         (eq (vl-netdeclassigns-characterize assigns)
             :both))
    "A delay has been given to a multiple net declaration where some of the
          nets have assignments and some do not; we don't know what this
          means.  Should the delay be on the nets or the assignments?")
   ((not (vl-vardeclassignlist-newfree-p assigns))
    "The 'new' keyword is used on the right-hand side of a net declaration,
          but this is a continuous assignment so new should not be used here.")
   (t nil))))

Theorem: vl-vardeclassignlist-newfree-p-unless-vl-netdecls-error

(defthm vl-vardeclassignlist-newfree-p-unless-vl-netdecls-error
 (implies
    (not (vl-netdecls-error nettype cstrength gstrength
                            vectoredp scalaredp type delay assigns))
    (vl-vardeclassignlist-newfree-p assigns)))