module/language/elisp/spec.scm

   1 ;;; Guile Emac Lisp
   2
   3 ;; Copyright (C) 2001 Free Software Foundation, Inc.
   4
   5 ;; This program is free software; you can redistribute it and/or modify
   6 ;; it under the terms of the GNU General Public License as published by
   7 ;; the Free Software Foundation; either version 2, or (at your option)
   8 ;; any later version.
   9 ;;
  10 ;; This program 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
  13 ;; GNU General Public License for more details.
  14 ;;
  15 ;; You should have received a copy of the GNU General Public License
  16 ;; along with this program; see the file COPYING.  If not, write to
  17 ;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18 ;; Boston, MA 02111-1307, USA.
  19
  20 ;;; Code:
  21
  22 (define-module (lang elisp spec)
  23   #:use-module (system lang language)
  24   #:export (elisp))
  25
  26 \f
  27 ;;;
  28 ;;; Translator
  29 ;;;
  30
  31 (define (translate x)
  32   (if (pair? x)
  33       (translate-pair x)
  34       x))
  35
  36 (define (translate-pair x)
  37   (let ((name (car x)) (args (cdr x)))
  38     (case name
  39       ((quote) `(@quote ,@args))
  40       ((defvar) `(@define ,@(map translate args)))
  41       ((setq) `(@set! ,@(map translate args)))
  42       ((if) `(@if ,(translate (car args))
  43                   (@begin ,@(map translate (cdr args)))))
  44       ((and) `(@and ,@(map translate args)))
  45       ((or) `(@or ,@(map translate args)))
  46       ((progn) `(@begin ,@(map translate args)))
  47       ((defun) `(@define ,(car args)
  48                          (@lambda ,(cadr args) ,@(map translate (cddr args)))))
  49       ((lambda) `(@lambda ,(car args) ,@(map translate (cdr args))))
  50       (else x))))
  51
  52 \f
  53 ;;;
  54 ;;; Language definition
  55 ;;;
  56
  57 (define-language elisp
  58   #:title       "Emacs Lisp"
  59   #:version     "0.0"
  60   #:reader      read
  61   #:expander    id
  62   #:translator  translate
  63   )