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Change-sig

Modifying constructor for sig structures.

Syntax

(change-sig x 
            [:module <module>] 
            [:index <index>])

This is an often useful alternative to make-sig.

We construct a new sig 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-sig

(defmacro change-sig (x &rest args)
  (std::change-aggregate 'sig
                         x args
                         '((:module . sig->module)
                           (:index . sig->index))
                         'change-sig
                         'nil))