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tinmop/src/interfaces.lisp

71 lines
2.0 KiB
Common Lisp

;; tinmop: an humble gemini and pleroma client
;; Copyright (C) 2020 cage
;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
(in-package :interfaces)
(defgeneric clone (object))
(defmethod clone (object))
(defgeneric clone-into (from to))
(defmethod clone-into (from to))
(defgeneric copy-flat (object))
(defmethod copy-flat (object))
(defgeneric copy-flat-into (from to))
(defmethod copy-flat-into (from to))
(defmacro with-simple-clone ((object type))
(alexandria:with-gensyms (res)
`(let ((,res (make-instance ,type)))
(clone-into ,object ,res)
,res)))
(defmacro with-simple-copy-flat ((object type))
(alexandria:with-gensyms (res)
`(let ((,res (make-instance ,type)))
(copy-flat-into ,object ,res)
,res)))
(defgeneric serialize (object))
(defgeneric serialize-to-stream (object stream))
(defgeneric deserialize (object file))
(defmethod serialize (object)
(format nil "~s" (marshal:marshal object)))
(defmethod serialize-to-stream (object stream)
(prin1 (marshal:marshal object) stream))
(defmethod deserialize (object file)
(declare (ignore object))
(marshal:unmarshal (read-from-string (filesystem-utils:slurp-file file))))
;; to use with ms:initialize-unmarshalled-instance
(defgeneric post-deserialization-fix (object))
(defmethod post-deserialization-fix (object)
object)
(defmethod post-deserialization-fix ((object (eql nil)))
nil)