Function: eieio-persistent--eieio-childp

eieio-persistent--eieio-childp is a byte-compiled function defined in eieio-base.el.gz.

Signature

(eieio-persistent--eieio-childp OBJ)

Documentation

Return non-nil if OBJ is an object of type eieio-persistent(var)/eieio-persistent(fun) or a subclass.

Aliases

eieio-persistent-child-p (obsolete since 25.1)

Source Code

;; Defined in /usr/src/emacs/lisp/emacs-lisp/eieio-base.el.gz
;;; eieio-persistent
;;
;; For objects which must save themselves to disk.  Provides an
;; `object-write' method to save an object to disk, and a
;; `eieio-persistent-read' function to call to read an object
;; from disk.
;;
;; Also provide the method `eieio-persistent-path-relative' to
;; calculate path names relative to a given instance.  This will
;; make the saved object location independent by converting all file
;; references to be relative to the directory the object is saved to.
;; You must call `eieio-persistent-path-relative' on each file name
;; saved in your object.
(defclass eieio-persistent ()
  ((file :initarg :file
	 :type string
	 :documentation
	 "The save file for this persistent object.
This must be a string, and must be specified when the new object is
instantiated.")
   (extension :type string
	      :allocation :class
	      :initform ".eieio"
	      :documentation
	      "Extension of files saved by this object.
Enables auto-choosing nice file names based on name.")
   (file-header-line :type string
		     :allocation :class
		     :initform ";; EIEIO PERSISTENT OBJECT"
		     :documentation
		     "Header line for the save file.
This is used with the `object-write' method.")
   (do-backups :type boolean
	       :allocation :class
	       :initform t
	       :documentation
	       "Saving this object should make backup files.
Setting to nil will mean no backups are made."))
  "This special class enables persistence through save files.
Use the `object-write' method to write this object to disk.  The save
format is Emacs Lisp code which calls the constructor for the saved
object.  For this reason, only slots which do not have an `:initarg'
specified will not be saved."
  :abstract t)