;;;; cl-scopes/core/message

(defpackage :scopes/core/message
  (:use :common-lisp)
  (:local-nicknames (:shape :scopes/shape))
  (:export #:message-meta #:message #:create
           #:head #:data #:sender))

(in-package :scopes/core/message)

;;;; message

(defun message-meta ()
  (make-instance 'shape:record-meta :head-fields '(:domain :action :class :item)))

(defclass message (shape:record)
  ((shape:meta :initform (message-meta) :allocation :class)
   (sender :reader sender :initarg :sender :initform nil)))

(defun create (head &key data sender)
  (shape:create 'message :head head :data data :sender sender))

(defmethod print-object ((msg message) stream)
  (shape:print-slots msg stream 'shape:head 'sender 'shape:data))