source: trunk/abcl/src/org/armedbear/lisp/print-unreadable-object.lisp @ 14207

Last change on this file since 14207 was 11391, checked in by vvoutilainen, 13 years ago

ABCL license is GPL + Classpath exception. This was intended
by Peter Graves, the original author. For reference, see
http://sourceforge.net/mailarchive/forum.php?thread_name=20040721115302.839%40prufrock&forum_name=armedbear-j-announce

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 2.3 KB
Line 
1;;; print-unreadable-object.lisp
2;;;
3;;; Copyright (C) 2003-2005 Peter Graves
4;;; $Id: print-unreadable-object.lisp 11391 2008-11-15 22:38:34Z vvoutilainen $
5;;;
6;;; This program is free software; you can redistribute it and/or
7;;; modify it under the terms of the GNU General Public License
8;;; as published by the Free Software Foundation; either version 2
9;;; of the License, or (at your option) any later version.
10;;;
11;;; This program is distributed in the hope that it will be useful,
12;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14;;; GNU General Public License for more details.
15;;;
16;;; You should have received a copy of the GNU General Public License
17;;; along with this program; if not, write to the Free Software
18;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
19;;;
20;;; As a special exception, the copyright holders of this library give you
21;;; permission to link this library with independent modules to produce an
22;;; executable, regardless of the license terms of these independent
23;;; modules, and to copy and distribute the resulting executable under
24;;; terms of your choice, provided that you also meet, for each linked
25;;; independent module, the terms and conditions of the license of that
26;;; module.  An independent module is a module which is not derived from
27;;; or based on this library.  If you modify this library, you may extend
28;;; this exception to your version of the library, but you are not
29;;; obligated to do so.  If you do not wish to do so, delete this
30;;; exception statement from your version.
31
32;;; Adapted from SBCL.
33
34(in-package #:system)
35
36(defun %print-unreadable-object (object stream type identity body)
37  (setf stream (out-synonym-of stream))
38  (when *print-readably*
39    (error 'print-not-readable :object object))
40  (format stream "#<")
41  (when type
42    (format stream "~S" (type-of object))
43      (format stream " "))
44  (when body
45    (funcall body))
46  (when identity
47    (when (or body (not type))
48      (format stream " "))
49    (format stream "{~X}" (identity-hash-code object)))
50  (format stream ">")
51  nil)
52
53(defmacro print-unreadable-object ((object stream &key type identity) &body body)
54  `(%print-unreadable-object ,object ,stream ,type ,identity
55           ,(if body
56          `(lambda () ,@body)
57          nil)))
Note: See TracBrowser for help on using the repository browser.