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Locator

Change-locator

Modifying constructor for locator structures.

Syntax

(change-locator x 
                [:program <program>] 
                [:name <name>])

This is an often useful alternative to make-locator.

We construct a new locator 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 fty::defprod.

Macro: change-locator

(defmacro change-locator (x &rest args)
  (std::change-aggregate 'locator
                         x args
                         '((:program . locator->program)
                           (:name . locator->name))
                         'change-locator
                         'nil))