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874125c4 MW |
1 | ;;; -*-lisp-*- |
2 | ;;; | |
3 | ;;; Extensions for more infix operators | |
4 | ;;; | |
5 | ;;; (c) 2006 Mark Wooding | |
6 | ;;; | |
7 | ||
8 | ;;;----- Licensing notice --------------------------------------------------- | |
9 | ;;; | |
10 | ;;; This program is free software; you can redistribute it and/or modify | |
11 | ;;; it under the terms of the GNU General Public License as published by | |
12 | ;;; the Free Software Foundation; either version 2 of the License, or | |
13 | ;;; (at your option) any later version. | |
14 | ;;; | |
15 | ;;; This program is distributed in the hope that it will be useful, | |
16 | ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;;; GNU General Public License for more details. | |
19 | ;;; | |
20 | ;;; You should have received a copy of the GNU General Public License | |
21 | ;;; along with this program; if not, write to the Free Software Foundation, | |
22 | ;;; Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
23 | ||
24 | (defpackage #:infix-ext | |
25 | (:use #:common-lisp #:mdw.base #:mdw.factorial #:infix-keywords #:infix)) | |
26 | (in-package #:infix-ext) | |
27 | ||
28 | (defun assignop-apply (op) | |
29 | (let ((y (popval)) | |
30 | (x (popval))) | |
31 | (pushval (list 'update-place op x y)))) | |
32 | ||
33 | (definfix *= (120 . 5) (assignop-apply '*)) | |
34 | (definfix %= (120 . 5) (assignop-apply 'mod)) | |
35 | (definfix //= (120 . 5) (assignop-apply 'floor)) | |
36 | (definfix &= (120 . 5) (assignop-apply 'logand)) | |
37 | (definfix \|= (120 . 5) (assignop-apply 'logior)) | |
38 | (definfix <<= (120 . 5) (assignop-apply 'ash)) | |
39 | (definfix >>= (120 . 5) (unop-apply-toggle '-) (assignop-apply '*)) | |
40 | ||
41 | (defpostfix ++ 120 (unop-apply 'incf-after)) | |
42 | (defpostfix -- 120 (unop-apply 'decf-after)) | |
43 | ||
44 | (defpostfix ! 120 (unop-apply 'factorial)) | |
45 | ||
46 | ;;;----- That's all, folks -------------------------------------------------- |