source: trunk/j/src/org/armedbear/lisp/require.lisp @ 11297

Last change on this file since 11297 was 11297, checked in by ehuelsmann, 13 years ago

Set Id keyword for expansion.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 1.4 KB
Line 
1;;; require.lisp
2;;;
3;;; Copyright (C) 2003-2005 Peter Graves
4;;; $Id: require.lisp 11297 2008-08-31 13:26:45Z ehuelsmann $
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(in-package #:system)
21
22;;; PROVIDE, REQUIRE (from SBCL)
23(defun provide (module-name)
24  (pushnew (string module-name) *modules* :test #'string=)
25  t)
26
27(defun require (module-name &optional pathnames)
28  (unless (member (string module-name) *modules* :test #'string=)
29    (let ((saved-modules (copy-list *modules*)))
30      (cond (pathnames
31             (unless (listp pathnames) (setf pathnames (list pathnames)))
32             (dolist (x pathnames)
33               (load x)))
34            (t
35             (let ((*readtable* (copy-readtable nil)))
36               (load-system-file (string-downcase (string module-name))))))
37      (set-difference *modules* saved-modules))))
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