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Value-cons

Make-value-cons

Basic constructor macro for value-cons structures.

Syntax

(make-value-cons [:car <car>] 
                 [:cdr <cdr>])

This is the usual way to construct value-cons structures. It simply conses together a structure with the specified fields.

This macro generates a new value-cons structure from scratch. See also change-value-cons, which can "change" an existing structure, instead.

Definition

This is an ordinary make- macro introduced by fty::defprod.

Macro: make-value-cons

(defmacro make-value-cons (&rest args)
  (std::make-aggregate 'value-cons
                       args '((:car) (:cdr))
                       'make-value-cons
                       nil))

Function: value-cons

(defun value-cons (car cdr)
  (declare (xargs :guard (and (valuep car) (valuep cdr))))
  (declare (xargs :guard t))
  (let ((__function__ 'value-cons))
    (declare (ignorable __function__))
    (b* ((car (mbe :logic (value-fix car) :exec car))
         (cdr (mbe :logic (value-fix cdr) :exec cdr)))
      (cons :cons (list car cdr)))))