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Rewrite

Change-rewrite

Modifying constructor for rewrite structures.

Syntax

(change-rewrite x 
                [:hyps <hyps>] 
                [:equiv <equiv>] 
                [:lhs <lhs>] 
                [:rhs <rhs>])

This is an often useful alternative to make-rewrite.

We construct a new rewrite structure that is a copy of x, except that you can explicitly change some particular fields. Any fields you don't mention just keep their values from x.

Definition

This is an ordinary change- macro introduced by defprod.

Macro: change-rewrite

(defmacro change-rewrite (x &rest args)
  (std::change-aggregate 'rewrite
                         x args
                         '((:hyps . rewrite->hyps)
                           (:equiv . rewrite->equiv)
                           (:lhs . rewrite->lhs)
                           (:rhs . rewrite->rhs))
                         'change-rewrite
                         'nil))