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 ;; Keyord: 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
  22 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  23
  24 ;;; Code:
  25
  26 ;;; To do:
  27 ;;; o lisp -> emacs side of things (grind-definition and find-definition)
  28
  29 (defvar ledit-mode-map nil)
  30
  31 (defconst ledit-zap-file (concat "/tmp/" (user-login-name) ".l1")
  32   "File name for data sent to Lisp by Ledit.")
  33 (defconst ledit-read-file (concat "/tmp/" (user-login-name) ".l2")
  34   "File name for data sent to Ledit by Lisp.")
  35 (defconst ledit-compile-file
  36   (concat "/tmp/" (user-login-name) ".l4")
  37   "File name for data sent to Lisp compiler by Ledit.")
  38 (defconst ledit-buffer "*LEDIT*"
  39   "Name of buffer in which Ledit accumulates data to send to Lisp.")
  40
  41 ;;;###autoload
  42 (defconst ledit-save-files t "\
  43 *Non-nil means Ledit should save files before transferring to Lisp.")
  44 ;;;###autoload
  45 (defconst ledit-go-to-lisp-string "%?lisp" "\
  46 *Shell commands to execute to resume Lisp job.")
  47 ;;;###autoload
  48 (defconst ledit-go-to-liszt-string "%?liszt" "\
  49 *Shell commands to execute to resume Lisp compiler job.")
  50
  51 (defun ledit-save-defun ()
  52   "Save the current defun in the ledit buffer"
  53   (interactive)
  54   (save-excursion
  55    (end-of-defun)
  56    (let ((end (point)))
  57      (beginning-of-defun)
  58      (append-to-buffer ledit-buffer (point) end))
  59    (message "Current defun saved for Lisp")))
  60
  61 (defun ledit-save-region (beg end)
  62   "Save the current region in the ledit buffer"
  63   (interactive "r")
  64   (append-to-buffer ledit-buffer beg end)
  65   (message "Region saved for Lisp"))
  66
  67 (defun ledit-zap-defun-to-lisp ()
  68   "Carry the current defun to Lisp."
  69   (interactive)
  70   (ledit-save-defun)
  71   (ledit-go-to-lisp))
  72
  73 (defun ledit-zap-defun-to-liszt ()
  74   "Carry the current defun to liszt."
  75   (interactive)
  76   (ledit-save-defun)
  77   (ledit-go-to-liszt))
  78
  79 (defun ledit-zap-region-to-lisp (beg end)
  80   "Carry the current region to Lisp."
  81   (interactive "r")
  82   (ledit-save-region beg end)
  83   (ledit-go-to-lisp))
  84
  85 (defun ledit-go-to-lisp ()
  86   "Suspend Emacs and restart a waiting Lisp job."
  87   (interactive)
  88   (if ledit-save-files
  89       (save-some-buffers))
  90   (if (get-buffer ledit-buffer)
  91       (save-excursion
  92        (set-buffer ledit-buffer)
  93        (goto-char (point-min))
  94        (write-region (point-min) (point-max) ledit-zap-file)
  95        (erase-buffer)))
  96   (suspend-emacs ledit-go-to-lisp-string)
  97   (load ledit-read-file t t))
  98
  99 (defun ledit-go-to-liszt ()
 100   "Suspend Emacs and restart a waiting Liszt job."
 101   (interactive)
 102   (if ledit-save-files
 103       (save-some-buffers))
 104   (if (get-buffer ledit-buffer)
 105       (save-excursion
 106        (set-buffer ledit-buffer)
 107        (goto-char (point-min))
 108        (insert "(declare (macros t))\n")
 109        (write-region (point-min) (point-max) ledit-compile-file)
 110        (erase-buffer)))
 111   (suspend-emacs ledit-go-to-liszt-string)
 112   (load ledit-read-file t t))
 113
 114 (defun ledit-setup ()
 115   "Set up key bindings for the Lisp/Emacs interface."
 116   (if (not ledit-mode-map)
 117       (progn (setq ledit-mode-map (make-sparse-keymap))
 118              (lisp-mode-commands ledit-mode-map)))
 119   (define-key ledit-mode-map "\e\^d" 'ledit-save-defun)
 120   (define-key ledit-mode-map "\e\^r" 'ledit-save-region)
 121   (define-key ledit-mode-map "\^xz" 'ledit-go-to-lisp)
 122   (define-key ledit-mode-map "\e\^c" 'ledit-go-to-liszt))
 123
 124 (ledit-setup)
 125
 126 ;;;###autoload
 127 (defun ledit-mode ()
 128   "\\<ledit-mode-map>Major mode for editing text and stuffing it to a Lisp job.
 129 Like Lisp mode, plus these special commands:
 130   \\[ledit-save-defun]  -- record defun at or after point
 131            for later transmission to Lisp job.
 132   \\[ledit-save-region] -- record region for later transmission to Lisp job.
 133   \\[ledit-go-to-lisp] -- transfer to Lisp job and transmit saved text.
 134   \\[ledit-go-to-liszt] -- transfer to Liszt (Lisp compiler) job
 135            and transmit saved text.
 136 \\{ledit-mode-map}
 137 To make Lisp mode automatically change to Ledit mode,
 138 do (setq lisp-mode-hook 'ledit-from-lisp-mode)"
 139   (interactive)
 140   (lisp-mode)
 141   (ledit-from-lisp-mode))
 142
 143 ;;;###autoload
 144 (defun ledit-from-lisp-mode ()
 145   (use-local-map ledit-mode-map)
 146   (setq mode-name "Ledit")
 147   (setq major-mode 'ledit-mode)
 148   (run-hooks 'ledit-mode-hook))
 149
 150 ;;; ledit.el ends here