source: trunk/abcl/src/org/armedbear/lisp/defmacro.lisp @ 13696

Last change on this file since 13696 was 13696, checked in by astalla, 9 years ago

DEFMACRO now supports documentation strings as per the ANSI specification.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 2.4 KB
Line 
1;;; defmacro.lisp
2;;;
3;;; Copyright (C) 2003-2006 Peter Graves
4;;; $Id: defmacro.lisp 13696 2011-11-15 22:34:19Z astalla $
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 CMUCL/SBCL.
33
34(in-package #:system)
35
36;; Redefine DEFMACRO to use PARSE-DEFMACRO.
37(defmacro defmacro (name lambda-list &rest body)
38  (let* ((whole (gensym "WHOLE-"))
39         (env   (gensym "ENVIRONMENT-")))
40    (multiple-value-bind (body decls documentation)
41        (parse-defmacro lambda-list whole body name 'defmacro :environment env)
42      (let ((expander `(lambda (,whole ,env) ,@decls ,body)))
43        `(progn
44           (let ((macro (make-macro ',name
45                                    (or (precompile nil ,expander) ,expander))))
46             ,@(if (special-operator-p name)
47                   `((put ',name 'macroexpand-macro macro))
48                   `((fset ',name macro)))
49             (%set-arglist macro ',lambda-list)
50             ,@(when documentation
51                     `((%set-documentation ',name 'cl:function ,documentation)))
52             ',name))))))
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