(scm_mem2symbol): Re-introduce indirect cell. It is
[bpt/guile.git] / oop / goops / old-define-method.scm
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71d540f7
MD
1;;; installed-scm-file
2
3;;;; Copyright (C) 2001 Free Software Foundation, Inc.
4;;;;
5;;;; This program is free software; you can redistribute it and/or modify
6;;;; it under the terms of the GNU General Public License as published by
7;;;; the Free Software Foundation; either version 2, or (at your option)
8;;;; any later version.
9;;;;
10;;;; This program is distributed in the hope that it will be useful,
11;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
12;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13;;;; GNU General Public License for more details.
14;;;;
15;;;; You should have received a copy of the GNU General Public License
16;;;; along with this software; see the file COPYING. If not, write to
17;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
18;;;; Boston, MA 02111-1307 USA
19;;;;
20\f
21
22(define-module (oop goops old-define-method)
23 :use-module (oop goops)
24 :no-backtrace
25 )
26
27(export define-method)
28
29(define define-method
30 (procedure->memoizing-macro
31 (lambda (exp env)
32 (let ((name (cadr exp)))
33 (if (and (pair? name)
34 (eq? (car name) 'setter)
35 (pair? (cdr name))
36 (symbol? (cadr name))
37 (null? (cddr name)))
38 (let ((name (cadr name)))
39 (cond ((not (symbol? name))
40 (goops-error "bad method name: ~S" name))
41 ((defined? name env)
42 `(begin
43 ;; *fixme* Temporary hack for the current module system
44 (if (not ,name)
45 (define-accessor ,name))
46 (add-method! (setter ,name) (method ,@(cddr exp)))))
47 (else
48 `(begin
49 (define-accessor ,name)
50 (add-method! (setter ,name) (method ,@(cddr exp)))))))
51 (cond ((not (symbol? name))
52 (goops-error "bad method name: ~S" name))
53 ((defined? name env)
54 `(begin
55 ;; *fixme* Temporary hack for the current module system
56 (if (not ,name)
57 (define-generic ,name))
58 (add-method! ,name (method ,@(cddr exp)))))
59 (else
60 `(begin
61 (define-generic ,name)
62 (add-method! ,name (method ,@(cddr exp)))))))))))