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Stripping-functions

Vl-blockitem-strip

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

Definitions and Theorems

Function: vl-blockitem-strip

(defun vl-blockitem-strip (x)
  (declare (xargs :guard (vl-blockitem-p x)))
  (let ((__function__ 'vl-blockitem-strip))
    (declare (ignorable __function__))
    (let ((x (vl-blockitem-fix x)))
      (common-lisp::case (tag x)
        ((:vl-vardecl)
         (b* ((x.vl-vardecl (vl-vardecl-strip x)))
           x.vl-vardecl))
        ((:vl-paramdecl)
         (b* ((x.vl-paramdecl (vl-paramdecl-strip x)))
           x.vl-paramdecl))
        ((:vl-import)
         (b* ((x.vl-import (vl-import-strip x)))
           x.vl-import))
        ((:vl-typedef)
         (b* ((x.vl-typedef (vl-typedef-strip x)))
           x.vl-typedef))
        (otherwise (b* ((x.vl-letdecl (vl-letdecl-strip x)))
                     x.vl-letdecl))))))

Theorem: vl-blockitem-p-of-vl-blockitem-strip

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

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

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

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

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