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• Sv::vl-expr.lisp

Vl-datatype-slot-width/range

Signature

(vl-datatype-slot-width/range x) 
  → 
(mv err slotwidth range-left range-right)

Arguments

x — Guard (vl-datatype-p x).

Returns

err — Type (iff (vl-msg-p err) err).

slotwidth — Type (natp slotwidth).

range-left — Type (integerp range-left).

range-right — Type (integerp range-right).

Definitions and Theorems

Function: vl-datatype-slot-width/range

(defun vl-datatype-slot-width/range (x)
  (declare (xargs :guard (vl-datatype-p x)))
  (declare (xargs :guard (vl-datatype-resolved-p x)))
  (let ((__function__ 'vl-datatype-slot-width/range))
    (declare (ignorable __function__))
    (b* ((x (vl-maybe-usertype-resolve x))
         ((mv err ?caveat slottype dim)
          (vl-datatype-remove-dim x))
         ((when err) (mv err 0 0 0))
         ((mv err size)
          (vl-datatype-size slottype))
         ((when err) (mv err 0 0 0))
         ((unless size)
          (mv (vmsg "Couldn't size array slot type ~a0"
                    slottype)
              0 0 0))
         ((unless (vl-dimension-case dim :range))
          (mv (vmsg "unsupported dimension on ~a0" x)
              0 0 0))
         ((vl-range range)
          (vl-dimension->range dim))
         ((unless (vl-range-resolved-p range))
          (mv (vmsg "unresolved dimension on array type ~a0"
                    x)
              0 0 0))
         (msb (vl-resolved->val range.msb))
         (lsb (vl-resolved->val range.lsb)))
      (mv nil size msb lsb))))

Theorem: return-type-of-vl-datatype-slot-width/range.err

(defthm return-type-of-vl-datatype-slot-width/range.err
  (b* (((mv ?err
            ?slotwidth ?range-left ?range-right)
        (vl-datatype-slot-width/range x)))
    (iff (vl-msg-p err) err))
  :rule-classes :rewrite)

Theorem: natp-of-vl-datatype-slot-width/range.slotwidth

(defthm natp-of-vl-datatype-slot-width/range.slotwidth
  (b* (((mv ?err
            ?slotwidth ?range-left ?range-right)
        (vl-datatype-slot-width/range x)))
    (natp slotwidth))
  :rule-classes :type-prescription)

Theorem: integerp-of-vl-datatype-slot-width/range.range-left

(defthm integerp-of-vl-datatype-slot-width/range.range-left
  (b* (((mv ?err
            ?slotwidth ?range-left ?range-right)
        (vl-datatype-slot-width/range x)))
    (integerp range-left))
  :rule-classes :type-prescription)

Theorem: integerp-of-vl-datatype-slot-width/range.range-right

(defthm integerp-of-vl-datatype-slot-width/range.range-right
  (b* (((mv ?err
            ?slotwidth ?range-left ?range-right)
        (vl-datatype-slot-width/range x)))
    (integerp range-right))
  :rule-classes :type-prescription)

Theorem: vl-datatype-slot-width/range-of-vl-datatype-fix-x

(defthm vl-datatype-slot-width/range-of-vl-datatype-fix-x
  (equal (vl-datatype-slot-width/range (vl-datatype-fix x))
         (vl-datatype-slot-width/range x)))

Theorem: vl-datatype-slot-width/range-vl-datatype-equiv-congruence-on-x

(defthm
     vl-datatype-slot-width/range-vl-datatype-equiv-congruence-on-x
  (implies (vl-datatype-equiv x x-equiv)
           (equal (vl-datatype-slot-width/range x)
                  (vl-datatype-slot-width/range x-equiv)))
  :rule-classes :congruence)