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• Portdecl-sign

Vl-portdecl-type-set-signed

Signature

(vl-portdecl-type-set-signed type elem) 
  → 
(mv successp warnings new-type)

Arguments

type — Type of this port declaration.
    Guard (vl-datatype-p type).

elem — Context for warnings.
    Guard (vl-modelement-p elem).

Returns

warnings — Type (vl-warninglist-p warnings).

new-type — Type (vl-datatype-p new-type).

Definitions and Theorems

Function: vl-portdecl-type-set-signed

(defun vl-portdecl-type-set-signed (type elem)
 (declare (xargs :guard (and (vl-datatype-p type)
                             (vl-modelement-p elem))))
 (let ((__function__ 'vl-portdecl-type-set-signed))
  (declare (ignorable __function__))
  (b*
   ((elem (vl-modelement-fix elem))
    (type (vl-datatype-fix type))
    ((fun (badtype type elem))
     (mv
      nil
      (list
       (make-vl-warning
        :type :vl-portdecl-sign-fail
        :msg
        "~a0: Don't know how to change the sign of datatype ~
                          ~a1 to be signed"
        :args (list elem type)
        :fatalp t))
      type)))
   (if (consp (vl-datatype->udims type))
       (badtype type elem)
     (vl-datatype-case
          type
          :vl-coretype (mv t nil
                           (change-vl-coretype type :signedp t))
          :vl-struct (mv t
                         nil (change-vl-struct type :signedp t))
          :vl-union (mv t nil (change-vl-union type :signedp t))
          :otherwise (badtype type elem))))))

Theorem: vl-warninglist-p-of-vl-portdecl-type-set-signed.warnings

(defthm vl-warninglist-p-of-vl-portdecl-type-set-signed.warnings
  (b* (((mv ?successp ?warnings ?new-type)
        (vl-portdecl-type-set-signed type elem)))
    (vl-warninglist-p warnings))
  :rule-classes :rewrite)

Theorem: vl-datatype-p-of-vl-portdecl-type-set-signed.new-type

(defthm vl-datatype-p-of-vl-portdecl-type-set-signed.new-type
  (b* (((mv ?successp ?warnings ?new-type)
        (vl-portdecl-type-set-signed type elem)))
    (vl-datatype-p new-type))
  :rule-classes :rewrite)