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Vl-make-temporary-wires

Generate expressions and declarations for some fresh, one-bit wires.

Signature

(vl-make-temporary-wires prefix i nf loc) 
  → 
(mv exprs vardecls nf)

Arguments

prefix — Prefix for name generation.
    Guard (stringp prefix).

i — How many wires to create.
    Guard (natp i).

nf — Namefactory for generating fresh names.
    Guard (vl-namefactory-p nf).

loc — Location for the new wire declarations.
    Guard (vl-location-p loc).

Returns

exprs — Expressions for the new one-bit wires.
    Type (and (vl-exprlist-p exprs) (equal (len exprs) (nfix i))).

vardecls — Declarations for the new wires.
    Type (vl-vardecllist-p vardecls), given (force (vl-location-p loc)).

nf — Type (vl-namefactory-p nf), given (and (force (stringp prefix)) (force (vl-namefactory-p nf))).

Definitions and Theorems

Function: vl-make-temporary-wires

(defun vl-make-temporary-wires (prefix i nf loc)
  (declare (xargs :guard (and (stringp prefix)
                              (natp i)
                              (vl-namefactory-p nf)
                              (vl-location-p loc))))
  (let ((__function__ 'vl-make-temporary-wires))
    (declare (ignorable __function__))
    (b* (((when (zp i)) (mv nil nil nf))
         ((mv new-name nf)
          (vl-namefactory-indexed-name prefix nf))
         (expr1 (make-vl-atom :guts (make-vl-id :name new-name)
                              :finalwidth 1
                              :finaltype :vl-unsigned))
         (decl1 (make-vl-vardecl :name new-name
                                 :type *vl-plain-old-wire-type*
                                 :nettype :vl-wire
                                 :loc loc))
         ((mv exprs decls nf)
          (vl-make-temporary-wires prefix (- i 1)
                                   nf loc)))
      (mv (cons expr1 exprs)
          (cons decl1 decls)
          nf))))

Theorem: return-type-of-vl-make-temporary-wires.exprs

(defthm return-type-of-vl-make-temporary-wires.exprs
  (b* (((mv ?exprs ?vardecls ?nf)
        (vl-make-temporary-wires prefix i nf loc)))
    (and (vl-exprlist-p exprs)
         (equal (len exprs) (nfix i))))
  :rule-classes :rewrite)

Theorem: vl-vardecllist-p-of-vl-make-temporary-wires.vardecls

(defthm vl-vardecllist-p-of-vl-make-temporary-wires.vardecls
  (implies (force (vl-location-p loc))
           (b* (((mv ?exprs ?vardecls ?nf)
                 (vl-make-temporary-wires prefix i nf loc)))
             (vl-vardecllist-p vardecls)))
  :rule-classes :rewrite)

Theorem: vl-namefactory-p-of-vl-make-temporary-wires.nf

(defthm vl-namefactory-p-of-vl-make-temporary-wires.nf
  (implies (and (force (stringp prefix))
                (force (vl-namefactory-p nf)))
           (b* (((mv ?exprs ?vardecls ?nf)
                 (vl-make-temporary-wires prefix i nf loc)))
             (vl-namefactory-p nf)))
  :rule-classes :rewrite)

Theorem: vl-make-temporary-wires-mvtypes-0

(defthm vl-make-temporary-wires-mvtypes-0
  (true-listp (mv-nth 0
                      (vl-make-temporary-wires prefix i nf loc)))
  :rule-classes :type-prescription)

Theorem: vl-make-temporary-wires-mvtypes-1

(defthm vl-make-temporary-wires-mvtypes-1
  (true-listp (mv-nth 1
                      (vl-make-temporary-wires prefix i nf loc)))
  :rule-classes :type-prescription)

Theorem: vl-make-temporary-wires-0-under-iff

(defthm vl-make-temporary-wires-0-under-iff
  (iff (mv-nth 0
               (vl-make-temporary-wires prefix i nf loc))
       (not (zp i))))