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Vl-plainarg-lsb-bits

Build the list of vl-emodwire-ps for a vl-plainarg-p, in LSB-first order.

Signature

(vl-plainarg-lsb-bits x walist warnings) 
  → 
(mv successp warnings lsb-bits)

Arguments

x — Guard (vl-plainarg-p x).

walist — Guard (vl-wirealist-p walist).

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

Returns

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

lsb-bits — Type (vl-emodwirelist-p lsb-bits).

See vl-msb-expr-bitlist. This function just makes sure a vl-plainarg-p isn't blank and then calls vl-msb-expr-bitlist to do the work. We return the bits in LSB-first order to match the convention throughout E.

Definitions and Theorems

Function: vl-plainarg-lsb-bits

(defun
 vl-plainarg-lsb-bits (x walist warnings)
 (declare (xargs :guard (and (vl-plainarg-p x)
                             (vl-wirealist-p walist)
                             (vl-warninglist-p warnings))))
 (let
  ((__function__ 'vl-plainarg-lsb-bits))
  (declare (ignorable __function__))
  (b*
   ((warnings (vl-warninglist-fix warnings))
    (expr (vl-plainarg->expr x))
    ((unless expr)
     (mv
      nil
      (fatal
           :type :vl-unsupported
           :msg "In vl-plainarg-lsb-bits, expected no blank ports.")
      nil))
    ((mv successp warnings bits)
     (vl-msb-expr-bitlist expr walist warnings)))
   (mv successp warnings (reverse bits)))))

Theorem: vl-warninglist-p-of-vl-plainarg-lsb-bits.warnings

(defthm vl-warninglist-p-of-vl-plainarg-lsb-bits.warnings
        (b* (((mv ?successp ?warnings ?lsb-bits)
              (vl-plainarg-lsb-bits x walist warnings)))
            (vl-warninglist-p warnings))
        :rule-classes :rewrite)

Theorem: vl-emodwirelist-p-of-vl-plainarg-lsb-bits.lsb-bits

(defthm vl-emodwirelist-p-of-vl-plainarg-lsb-bits.lsb-bits
        (b* (((mv ?successp ?warnings ?lsb-bits)
              (vl-plainarg-lsb-bits x walist warnings)))
            (vl-emodwirelist-p lsb-bits))
        :rule-classes :rewrite)

Theorem: true-listp-of-vl-plainarg-lsb-bits.lsb-bits

(defthm true-listp-of-vl-plainarg-lsb-bits.lsb-bits
        (b* (((mv ?successp ?warnings ?lsb-bits)
              (vl-plainarg-lsb-bits x walist warnings)))
            (true-listp lsb-bits))
        :rule-classes :type-prescription)