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• Vl-build-portdecls

Vl-build-subsequent-portdecls

Signature

(vl-build-subsequent-portdecls x base-decl) → portdecls

Arguments

x — The subsequent ports, a1, ....
    Guard (vl-parsed-port-identifier-list-p x).

base-decl — Possibly the portdecl for a0, but more generally it may be a portdecl that we are ``abusing'' to reuse structure. In particular, if a0 has unpacked dimensions, then base-decl is like a0 except that it does NOT have such dimensions.
    Guard (vl-portdecl-p base-decl).

Returns

portdecls — Type (vl-portdecllist-p portdecls).

We have sometimes encountered very long port lists like input a0, a1, ...;. In these cases, we can win big for memory usage by reusing structure when we build the subsequent port declarations, by CHANGE-ing the declaration of a0 instead of MAKE-ing fresh ports.

Definitions and Theorems

Function: vl-build-subsequent-portdecls

(defun vl-build-subsequent-portdecls (x base-decl)
 (declare (xargs :guard (and (vl-parsed-port-identifier-list-p x)
                             (vl-portdecl-p base-decl))))
 (let ((__function__ 'vl-build-subsequent-portdecls))
  (declare (ignorable __function__))
  (b*
   (((when (atom x)) nil)
    ((vl-parsed-port-identifier x1) (car x))
    (basetype (vl-portdecl->type base-decl))
    (-
      (or (not (vl-datatype->udims basetype))
          (raise "Base datatype already has unpacked dimensions?")))
    (type1 (if (consp x1.udims)
               (vl-datatype-update-udims x1.udims basetype)
             basetype)))
   (cons (change-vl-portdecl base-decl
                             :name (vl-idtoken->name x1.name)
                             :loc (vl-token->loc x1.name)
                             :type type1)
         (vl-build-subsequent-portdecls (cdr x)
                                        base-decl)))))

Theorem: vl-portdecllist-p-of-vl-build-subsequent-portdecls

(defthm vl-portdecllist-p-of-vl-build-subsequent-portdecls
  (b* ((portdecls (vl-build-subsequent-portdecls x base-decl)))
    (vl-portdecllist-p portdecls))
  :rule-classes :rewrite)

Theorem: true-listp-of-vl-build-subsequent-portdecls

(defthm true-listp-of-vl-build-subsequent-portdecls
  (b* ((portdecls (vl-build-subsequent-portdecls x base-decl)))
    (true-listp portdecls))
  :rule-classes :type-prescription)

Theorem: len-of-vl-build-subsequent-portdecls

(defthm len-of-vl-build-subsequent-portdecls
  (b* ((portdecls (vl-build-subsequent-portdecls x base-decl)))
    (equal (len portdecls) (len x)))
  :rule-classes :rewrite)

Theorem: consp-of-vl-build-subsequent-portdecls

(defthm consp-of-vl-build-subsequent-portdecls
  (b* ((portdecls (vl-build-subsequent-portdecls x base-decl)))
    (equal (consp portdecls) (consp x)))
  :rule-classes :rewrite)

Theorem: vl-build-subsequent-portdecls-under-iff

(defthm vl-build-subsequent-portdecls-under-iff
  (b* ((portdecls (vl-build-subsequent-portdecls x base-decl)))
    (iff portdecls (consp x)))
  :rule-classes :rewrite)