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Function-definition

Change-function-definition

Modifying constructor for function-definition structures.

Syntax

(change-function-definition x 
                            [:header <header>] 
                            [:precondition <precondition>] 
                            [:postcondition <postcondition>] 
                            [:definer <definer>])

This is an often useful alternative to make-function-definition.

We construct a new function-definition 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-function-definition

(defmacro change-function-definition (x &rest args)
  (std::change-aggregate
       'function-definition
       x args
       '((:header . function-definition->header)
         (:precondition . function-definition->precondition)
         (:postcondition . function-definition->postcondition)
         (:definer . function-definition->definer))
       'change-function-definition
       'nil))