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Const-expr

Change-const-expr

Modifying constructor for const-expr structures.

Syntax

(change-const-expr x 
                   [:expr <expr>])

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

We construct a new const-expr 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-const-expr

(defmacro change-const-expr (x &rest args)
  (std::change-aggregate 'const-expr
                         x args '((:expr . const-expr->expr))
                         'change-const-expr
                         'remake-const-expr))