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Value-struct

Make-value-struct

Basic constructor macro for value-struct structures.

Syntax

(make-value-struct [:tag <tag>] 
                   [:members <members>] 
                   [:flexiblep <flexiblep>])

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

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

Definition

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

Macro: make-value-struct

(defmacro make-value-struct (&rest args)
  (std::make-aggregate 'value-struct
                       args '((:tag) (:members) (:flexiblep))
                       'make-value-struct
                       nil))

Function: value-struct

(defun value-struct (tag members flexiblep)
  (declare (xargs :guard (and (identp tag)
                              (member-value-listp members)
                              (booleanp flexiblep))))
  (declare (xargs :guard (consp members)))
  (let ((__function__ 'value-struct))
    (declare (ignorable __function__))
    (b* ((tag (mbe :logic (ident-fix tag) :exec tag))
         (members (mbe :logic (member-value-list-fix members)
                       :exec members))
         (flexiblep (mbe :logic (acl2::bool-fix flexiblep)
                         :exec flexiblep)))
      (let ((members (mbe :logic
                          (if (consp members)
                              members
                            (list (member-value-fix :irrelevant)))
                          :exec members)))
        (cons :struct (list tag members flexiblep))))))