63 lines
2.2 KiB
Common Lisp
63 lines
2.2 KiB
Common Lisp
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;;; serial.lisp --- serialisation of CLOS objects
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;;; Copyright (C) 2009 by Walter C. Pelissero
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;;; Author: Walter C. Pelissero <walter@pelissero.de>
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;;; Project: sclf
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#+cmu (ext:file-comment "$Module: serial.lisp $")
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;;; This library is free software; you can redistribute it and/or
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;;; modify it under the terms of the GNU Lesser General Public License
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;;; as published by the Free Software Foundation; either version 2.1
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;;; of the License, or (at your option) any later version.
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;;; This library is distributed in the hope that it will be useful,
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;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;;; Lesser General Public License for more details.
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;;; You should have received a copy of the GNU Lesser General Public
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;;; License along with this library; if not, write to the Free
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;;; Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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;;; 02111-1307 USA
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(in-package :sclf)
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(defclass printable-object-mixin () ())
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(defmacro reconstruct-object (class &rest args)
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`(apply #'make-instance ',class ',args))
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(defun print-readable-instance (object &optional stream)
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(unless stream
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(setf stream *standard-output*))
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(be class (class-of object)
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(pprint-logical-block (stream (copy-list (class-slots class)) :prefix "#.(" :suffix ")")
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(flet ((spc ()
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(write-char #\space stream)))
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(write 'reconstruct-object :stream stream)
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(spc)
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(write (class-name class) :stream stream :escape t :readably t :pretty t)
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(pprint-exit-if-list-exhausted)
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(spc)
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(loop
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(be* slot (pprint-pop)
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slot-name (slot-definition-name slot)
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initarg (car (slot-definition-initargs slot))
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(when (and initarg
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(slot-boundp object slot-name))
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(write initarg :stream stream)
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(spc)
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(when *print-pretty*
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(pprint-newline :miser stream))
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(write (slot-value object slot-name)
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:stream stream)
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(pprint-exit-if-list-exhausted)
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(if *print-pretty*
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(pprint-newline :linear stream)
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(spc)))))))))
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(defmethod print-object ((object printable-object-mixin) stream)
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(if *print-readably*
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(print-readable-instance object stream)
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(call-next-method)))
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