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• Parse-expressions

Vl-build-range-select

Signature

(vl-build-range-select expr range) → expr[range]

Arguments

expr — Guard (vl-expr-p expr).

range — Guard (vl-erange-p range).

Returns

expr[range] — Type (vl-expr-p expr[range]), given the guard.

Definitions and Theorems

Function: vl-build-range-select

(defun vl-build-range-select (expr range)
 (declare (xargs :guard (and (vl-expr-p expr)
                             (vl-erange-p range))))
 (let ((__function__ 'vl-build-range-select))
  (declare (ignorable __function__))
  (b* (((vl-erange range) range))
   (case
    range.type
    (:vl-index (make-vl-nonatom :op :vl-index
                                :args (list expr range.left)))
    (:vl-colon
         (make-vl-nonatom :op :vl-select-colon
                          :args (list expr range.left range.right)))
    (:vl-pluscolon
         (make-vl-nonatom :op :vl-select-pluscolon
                          :args (list expr range.left range.right)))
    (:vl-minuscolon
     (make-vl-nonatom :op :vl-select-minuscolon
                      :args (list expr range.left range.right)))))))

Theorem: vl-expr-p-of-vl-build-range-select

(defthm vl-expr-p-of-vl-build-range-select
  (implies (and (force (vl-expr-p expr))
                (force (vl-erange-p range)))
           (b* ((expr[range] (vl-build-range-select expr range)))
             (vl-expr-p expr[range])))
  :rule-classes :rewrite)