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Stripping-functions

Vl-repetition-strip

Signature
(vl-repetition-strip x) → new-x
Arguments: x — Guard (vl-repetition-p x).
Returns: new-x — Type (vl-repetition-p new-x).

Definitions and Theorems

Function: vl-repetition-strip

(defun vl-repetition-strip (x)
  (declare (xargs :guard (vl-repetition-p x)))
  (let ((__function__ 'vl-repetition-strip))
    (declare (ignorable __function__))
    (b* (((vl-repetition x)
          (vl-repetition-fix x)))
      (b* ((left (vl-expr-strip x.left))
           (right (vl-maybe-expr-strip x.right)))
        (change-vl-repetition x
                              :left left
                              :right right)))))

Theorem: vl-repetition-p-of-vl-repetition-strip

(defthm vl-repetition-p-of-vl-repetition-strip
  (b* ((new-x (vl-repetition-strip x)))
    (vl-repetition-p new-x))
  :rule-classes :rewrite)

Theorem: vl-repetition-strip-of-vl-repetition-fix-x

(defthm vl-repetition-strip-of-vl-repetition-fix-x
  (equal (vl-repetition-strip (vl-repetition-fix x))
         (vl-repetition-strip x)))

Theorem: vl-repetition-strip-vl-repetition-equiv-congruence-on-x

(defthm vl-repetition-strip-vl-repetition-equiv-congruence-on-x
  (implies (vl-repetition-equiv x x-equiv)
           (equal (vl-repetition-strip x)
                  (vl-repetition-strip x-equiv)))
  :rule-classes :congruence)