Import guile-1.8 as multiple upstream tarball component

[lilypond.git] / guile18 / ice-9 / safe.scm

diff --git a/guile18/ice-9/safe.scm b/guile18/ice-9/safe.scm
new file mode 100644 (file)
index 0000000..15b7799
--- /dev/null
+++ b/guile18/ice-9/safe.scm
@@ -0,0 +1,34 @@
+;;;;   Copyright (C) 2000, 2001, 2006 Free Software Foundation, Inc.
+;;;; 
+;;;; This library is free software; you can redistribute it and/or
+;;;; modify it under the terms of the GNU Lesser General Public
+;;;; License as published by the Free Software Foundation; either
+;;;; version 2.1 of the License, or (at your option) any later version.
+;;;; 
+;;;; This library is distributed in the hope that it will be useful,
+;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;;;; Lesser General Public License for more details.
+;;;; 
+;;;; You should have received a copy of the GNU Lesser General Public
+;;;; License along with this library; if not, write to the Free Software
+;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+;;;; 
+\f
+;;;; Safe subset of R5RS bindings
+
+(define-module (ice-9 safe)
+  :export (safe-environment make-safe-module))
+
+(define safe-r5rs-interface (resolve-interface '(ice-9 safe-r5rs)))
+
+(define (safe-environment n)
+  (if (not (= n 5))
+      (scm-error 'misc-error 'safe-environment
+                "~A is not a valid version"
+                (list n)
+                '()))
+  safe-r5rs-interface)
+
+(define (make-safe-module)
+  (make-module 1021 (list safe-r5rs-interface)))