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Expression-struct-component

Change-expression-struct-component

Modifying constructor for expression-struct-component structures.

Syntax

(change-expression-struct-component x 
                                    [:struct <struct>] 
                                    [:component <component>])

This is an often useful alternative to make-expression-struct-component.

We construct a new expression-struct-component 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-expression-struct-component

(defmacro change-expression-struct-component (x &rest args)
  (std::change-aggregate
       'expression-struct-component
       x args
       '((:struct . expression-struct-component->struct)
         (:component .
                     expression-struct-component->component))
       'change-expression-struct-component
       'nil))