source: trunk/abcl/src/org/armedbear/lisp/with-package-iterator.lisp @ 14196

Last change on this file since 14196 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: 3.2 KB
Line 
1;;; with-package-iterator.lisp
2;;;
3;;; Copyright (C) 2003 Peter Graves
4;;; $Id: with-package-iterator.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(defun package-iterator-function (package-list symbol-types)
35  (unless (consp package-list)
36    (setq package-list (list package-list)))
37  (let ((results ()))
38    (dolist (pkg package-list)
39      (unless (packagep pkg)
40        (setq pkg (find-package pkg))
41        (unless pkg
42          (error 'package-error "not a package")))
43      (when (memq :internal symbol-types)
44        (dolist (sym (package-internal-symbols pkg))
45          (push (list sym :internal pkg) results)))
46      (when (memq :external symbol-types)
47        (dolist (sym (package-external-symbols pkg))
48          (push (list sym :external pkg) results)))
49      (when (memq :inherited symbol-types)
50        (dolist (sym (package-inherited-symbols pkg))
51          (push (list sym :inherited pkg) results))))
52    #'(lambda () (let ((item (car results)))
53                   (setq results (cdr results))
54                   (if item
55                       (values t (first item) (second item) (third item))
56                       nil)))))
57
58(defmacro with-package-iterator ((name package-list &rest symbol-types)
59                                 &body body)
60  (unless symbol-types
61    (error 'program-error
62           "WITH-PACKAGE-ITERATOR: no symbol types specified"))
63  (dolist (symbol-type symbol-types)
64    (unless (memq symbol-type '(:internal :external :inherited))
65      (error 'program-error
66             "WITH-PACKAGE-ITERATOR: invalid symbol type: %S" symbol-type)))
67  (let ((iter (gensym)))
68    `(let ((,iter (package-iterator-function ,package-list ',(remove-duplicates symbol-types))))
69       (macrolet ((,name () '(funcall ,iter)))
70                 ,@body))))
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