ice-9/safe.scm

   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)))