source: trunk/abcl/src/org/armedbear/lisp/sequences.lisp @ 11457

Last change on this file since 11457 was 11391, checked in by vvoutilainen, 12 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: 2.4 KB
Line 
1;;; sequences.lisp
2;;;
3;;; Copyright (C) 2003-2005 Peter Graves
4;;; $Id: sequences.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(in-package #:system)
33
34(defmacro type-specifier-atom (type)
35  `(if (atom ,type) ,type (car ,type)))
36
37(defun make-sequence-of-type (type length)
38  (case (type-specifier-atom type)
39    (list
40     (make-list length))
41    ((bit-vector simple-bit-vector)
42     (make-array length :element-type 'bit))
43    ((simple-base-string simple-string string)
44     (make-string length))
45    ((simple-vector vector)
46     (if (cadr type)
47         (make-array length :element-type (cadr type))
48         (make-array length)))
49    (nil-vector
50     (make-array length :element-type nil))
51    (simple-array
52     (if (cadr type)
53         (make-array length :element-type (cadr type))
54         (make-array length)))
55    (t
56     (error "MAKE-SEQUENCE-OF-TYPE: unsupported case ~S" type))))
57
58(defmacro make-sequence-like (sequence length)
59  `(make-sequence-of-type (type-of ,sequence) ,length))
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