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Block

Change-block

Modifying constructor for block structures.

Syntax

(change-block x 
              [:statements <statements>])

This is an often useful alternative to make-block.

We construct a new block 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-block

(defmacro change-block (x &rest args)
  (std::change-aggregate 'block
                         x args
                         '((:statements . block->statements))
                         'change-block
                         'nil))