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Expr-cast

Change-expr-cast

Modifying constructor for expr-cast structures.

Syntax

(change-expr-cast x 
                  [:type <type>] 
                  [:arg <arg>])

This is an often useful alternative to make-expr-cast.

We construct a new expr-cast 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-expr-cast

(defmacro change-expr-cast (x &rest args)
  (std::change-aggregate 'expr-cast
                         x args
                         '((:type . expr-cast->type)
                           (:arg . expr-cast->arg))
                         'change-expr-cast
                         'nil))