blob: b81c1338aaaad38a372633e1d6202276f84f7970 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
;;; control.scm --- The R6RS control structures library
;; Copyright (C) 2010 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 3 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
(library (rnrs control (6))
(export when unless do case-lambda)
(import (only (guile) if not begin define-syntax syntax-rules do case-lambda))
(define-syntax when
(syntax-rules ()
((when test result1 result2 ...)
(if test (begin result1 result2 ...)))))
(define-syntax unless
(syntax-rules ()
((unless test result1 result2 ...)
(if (not test) (begin result1 result2 ...))))))
|