lisp/ledit.el

   1 ;;; ledit.el --- Emacs side of ledit interface
   2
   3 ;; Copyright (C) 1985 Free Software Foundation, Inc.
   4
   5 ;; Maintainer: FSF
   6 ;; Keyword: languages
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Commentary:
  26
  27 ;; This is a major mode for editing Liszt.  See etc/LEDIT for details.
  28
  29 ;;; Code:
  30
  31 ;;; To do:
  32 ;;; o lisp -> emacs side of things (grind-definition and find-definition)
  33
  34 (defvar ledit-mode-map nil)
  35
  36 (defconst ledit-zap-file
  37   (expand-file-name (concat (user-login-name) ".l1") temporary-file-directory)
  38   "File name for data sent to Lisp by Ledit.")
  39 (defconst ledit-read-file
  40   (expand-file-name (concat (user-login-name) ".l2") temporary-file-directory)
  41   "File name for data sent to Ledit by Lisp.")
  42 (defconst ledit-compile-file
  43   (expand-file-name (concat (user-login-name) ".l4") temporary-file-directory)
  44   "File name for data sent to Lisp compiler by Ledit.")
  45 (defconst ledit-buffer "*LEDIT*"
  46   "Name of buffer in which Ledit accumulates data to send to Lisp.")
  47
  48 ;;;###autoload
  49 (defconst ledit-save-files t "\
  50 *Non-nil means Ledit should save files before transferring to Lisp.")
  51 ;;;###autoload
  52 (defconst ledit-go-to-lisp-string "%?lisp" "\
  53 *Shell commands to execute to resume Lisp job.")
  54 ;;;###autoload
  55 (defconst ledit-go-to-liszt-string "%?liszt" "\
  56 *Shell commands to execute to resume Lisp compiler job.")
  57
  58 (defun ledit-save-defun ()
  59   "Save the current defun in the ledit buffer"
  60   (interactive)
  61   (save-excursion
  62    (end-of-defun)
  63    (let ((end (point)))
  64      (beginning-of-defun)
  65      (append-to-buffer ledit-buffer (point) end))
  66    (message "Current defun saved for Lisp")))
  67
  68 (defun ledit-save-region (beg end)
  69   "Save the current region in the ledit buffer"
  70   (interactive "r")
  71   (append-to-buffer ledit-buffer beg end)
  72   (message "Region saved for Lisp"))
  73
  74 (defun ledit-zap-defun-to-lisp ()
  75   "Carry the current defun to Lisp."
  76   (interactive)
  77   (ledit-save-defun)
  78   (ledit-go-to-lisp))
  79
  80 (defun ledit-zap-defun-to-liszt ()
  81   "Carry the current defun to liszt."
  82   (interactive)
  83   (ledit-save-defun)
  84   (ledit-go-to-liszt))
  85
  86 (defun ledit-zap-region-to-lisp (beg end)
  87   "Carry the current region to Lisp."
  88   (interactive "r")
  89   (ledit-save-region beg end)
  90   (ledit-go-to-lisp))
  91
  92 (defun ledit-go-to-lisp ()
  93   "Suspend Emacs and restart a waiting Lisp job."
  94   (interactive)
  95   (if ledit-save-files
  96       (save-some-buffers))
  97   (if (get-buffer ledit-buffer)
  98       (save-excursion
  99        (set-buffer ledit-buffer)
 100        (goto-char (point-min))
 101        (write-region (point-min) (point-max) ledit-zap-file)
 102        (erase-buffer)))
 103   (suspend-emacs ledit-go-to-lisp-string)
 104   (load ledit-read-file t t))
 105
 106 (defun ledit-go-to-liszt ()
 107   "Suspend Emacs and restart a waiting Liszt job."
 108   (interactive)
 109   (if ledit-save-files
 110       (save-some-buffers))
 111   (if (get-buffer ledit-buffer)
 112       (save-excursion
 113        (set-buffer ledit-buffer)
 114        (goto-char (point-min))
 115        (insert "(declare (macros t))\n")
 116        (write-region (point-min) (point-max) ledit-compile-file)
 117        (erase-buffer)))
 118   (suspend-emacs ledit-go-to-liszt-string)
 119   (load ledit-read-file t t))
 120
 121 (defun ledit-setup ()
 122   "Set up key bindings for the Lisp/Emacs interface."
 123   (if (not ledit-mode-map)
 124       (progn (setq ledit-mode-map (nconc (make-sparse-keymap)
 125                                          shared-lisp-mode-map))))
 126   (define-key ledit-mode-map "\e\^d" 'ledit-save-defun)
 127   (define-key ledit-mode-map "\e\^r" 'ledit-save-region)
 128   (define-key ledit-mode-map "\^xz" 'ledit-go-to-lisp)
 129   (define-key ledit-mode-map "\e\^c" 'ledit-go-to-liszt))
 130
 131 (ledit-setup)
 132
 133 ;;;###autoload
 134 (defun ledit-mode ()
 135   "\\<ledit-mode-map>Major mode for editing text and stuffing it to a Lisp job.
 136 Like Lisp mode, plus these special commands:
 137   \\[ledit-save-defun]  -- record defun at or after point
 138            for later transmission to Lisp job.
 139   \\[ledit-save-region] -- record region for later transmission to Lisp job.
 140   \\[ledit-go-to-lisp] -- transfer to Lisp job and transmit saved text.
 141   \\[ledit-go-to-liszt] -- transfer to Liszt (Lisp compiler) job
 142            and transmit saved text.
 143 \\{ledit-mode-map}
 144 To make Lisp mode automatically change to Ledit mode,
 145 do (setq lisp-mode-hook 'ledit-from-lisp-mode)"
 146   (interactive)
 147   (lisp-mode)
 148   (ledit-from-lisp-mode))
 149
 150 ;;;###autoload
 151 (defun ledit-from-lisp-mode ()
 152   (use-local-map ledit-mode-map)
 153   (setq mode-name "Ledit")
 154   (setq major-mode 'ledit-mode)
 155   (run-hooks 'ledit-mode-hook))
 156
 157 (provide 'ledit)
 158
 159 ;;; ledit.el ends here