module/srfi/srfi-88.scm

   1 ;;; srfi-88.scm --- Keyword Objects              -*- coding: utf-8 -*-
   2
   3 ;; Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
   4 ;;
   5 ;; This library is free software; you can redistribute it and/or
   6 ;; modify it under the terms of the GNU Lesser General Public
   7 ;; License as published by the Free Software Foundation; either
   8 ;; version 3 of the License, or (at your option) any later version.
   9 ;;
  10 ;; This library is distributed in the hope that it will be useful,
  11 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 ;; Lesser General Public License for more details.
  14 ;;
  15 ;; You should have received a copy of the GNU Lesser General Public
  16 ;; License along with this library; if not, write to the Free Software
  17 ;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  18
  19 ;;; Author: Ludovic Courtès <ludo@gnu.org>
  20
  21 ;;; Commentary:
  22
  23 ;; This is a convenience module providing SRFI-88 "keyword object".  All it
  24 ;; does is setup the right reader option and export keyword-related
  25 ;; convenience procedures.
  26
  27 ;;; Code:
  28
  29 (define-module (srfi srfi-88)
  30   #:re-export (keyword?)
  31   #:export (keyword->string string->keyword))
  32
  33 (cond-expand-provide (current-module) '(srfi-88))
  34
  35 \f
  36 ;; Change the keyword syntax both at compile time and run time; the latter is
  37 ;; useful at the REPL.
  38 (eval-when (expand load eval)
  39   (read-set! keywords 'postfix))
  40
  41 (define (keyword->string k)
  42   "Return the name of @var{k} as a string."
  43   (symbol->string (keyword->symbol k)))
  44
  45 (define (string->keyword s)
  46   "Return the keyword object whose name is @var{s}."
  47   (symbol->keyword (string->symbol s)))
  48
  49 ;;; Local Variables:
  50 ;;; coding: latin-1
  51 ;;; End:
  52
  53 ;;; srfi-88.scm ends here