| 1 | ;;;; Copyright (C) 2000, 2001, 2006 Free Software Foundation, Inc. |
| 2 | ;;;; |
| 3 | ;;;; This library is free software; you can redistribute it and/or |
| 4 | ;;;; modify it under the terms of the GNU Lesser General Public |
| 5 | ;;;; License as published by the Free Software Foundation; either |
| 6 | ;;;; version 2.1 of the License, or (at your option) any later version. |
| 7 | ;;;; |
| 8 | ;;;; This library is distributed in the hope that it will be useful, |
| 9 | ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 11 | ;;;; Lesser General Public License for more details. |
| 12 | ;;;; |
| 13 | ;;;; You should have received a copy of the GNU Lesser General Public |
| 14 | ;;;; License along with this library; if not, write to the Free Software |
| 15 | ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 16 | ;;;; |
| 17 | \f |
| 18 | ;;;; Safe subset of R5RS bindings |
| 19 | |
| 20 | (define-module (ice-9 safe) |
| 21 | :export (safe-environment make-safe-module)) |
| 22 | |
| 23 | (define safe-r5rs-interface (resolve-interface '(ice-9 safe-r5rs))) |
| 24 | |
| 25 | (define (safe-environment n) |
| 26 | (if (not (= n 5)) |
| 27 | (scm-error 'misc-error 'safe-environment |
| 28 | "~A is not a valid version" |
| 29 | (list n) |
| 30 | '())) |
| 31 | safe-r5rs-interface) |
| 32 | |
| 33 | (define (make-safe-module) |
| 34 | (make-module 1021 (list safe-r5rs-interface))) |