lisp/ledit.el

   1 ;;; ledit.el --- Emacs side of ledit interface
   2
   3 ;; Copyright (C) 1985, 2001, 2002, 2003, 2004, 2005,
   4 ;;   2006, 2007, 2008, 2009 Free Software Foundation, Inc.
   5
   6 ;; Maintainer: FSF
   7 ;; Keywords: languages
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software: you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation, either version 3 of the License, or
  14 ;; (at your option) any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26 ;; This is a major mode for editing Liszt.  See etc/LEDIT for details.
  27
  28 ;;; Code:
  29
  30 ;;; To do:
  31 ;;; o lisp -> emacs side of things (grind-definition and find-definition)
  32
  33 (defvar ledit-mode-map nil)
  34
  35 (defconst ledit-zap-file
  36   (expand-file-name (concat (user-login-name) ".l1") temporary-file-directory)
  37   "File name for data sent to Lisp by Ledit.")
  38 (defconst ledit-read-file
  39   (expand-file-name (concat (user-login-name) ".l2") temporary-file-directory)
  40   "File name for data sent to Ledit by Lisp.")
  41 (defconst ledit-compile-file
  42   (expand-file-name (concat (user-login-name) ".l4") temporary-file-directory)
  43   "File name for data sent to Lisp compiler by Ledit.")
  44 (defconst ledit-buffer "*LEDIT*"
  45   "Name of buffer in which Ledit accumulates data to send to Lisp.")
  46
  47 ;;;###autoload
  48 (defconst ledit-save-files t "\
  49 *Non-nil means Ledit should save files before transferring to Lisp.")
  50 ;;;###autoload
  51 (defconst ledit-go-to-lisp-string "%?lisp" "\
  52 *Shell commands to execute to resume Lisp job.")
  53 ;;;###autoload
  54 (defconst ledit-go-to-liszt-string "%?liszt" "\
  55 *Shell commands to execute to resume Lisp compiler job.")
  56
  57 (defun ledit-save-defun ()
  58   "Save the current defun in the ledit buffer."
  59   (interactive)
  60   (save-excursion
  61    (end-of-defun)
  62    (let ((end (point)))
  63      (beginning-of-defun)
  64      (append-to-buffer ledit-buffer (point) end))
  65    (message "Current defun saved for Lisp")))
  66
  67 (defun ledit-save-region (beg end)
  68   "Save the current region in the ledit buffer"
  69   (interactive "r")
  70   (append-to-buffer ledit-buffer beg end)
  71   (message "Region saved for Lisp"))
  72
  73 (defun ledit-zap-defun-to-lisp ()
  74   "Carry the current defun to Lisp."
  75   (interactive)
  76   (ledit-save-defun)
  77   (ledit-go-to-lisp))
  78
  79 (defun ledit-zap-defun-to-liszt ()
  80   "Carry the current defun to liszt."
  81   (interactive)
  82   (ledit-save-defun)
  83   (ledit-go-to-liszt))
  84
  85 (defun ledit-zap-region-to-lisp (beg end)
  86   "Carry the current region to Lisp."
  87   (interactive "r")
  88   (ledit-save-region beg end)
  89   (ledit-go-to-lisp))
  90
  91 (defun ledit-go-to-lisp ()
  92   "Suspend Emacs and restart a waiting Lisp job."
  93   (interactive)
  94   (if ledit-save-files
  95       (save-some-buffers))
  96   (if (get-buffer ledit-buffer)
  97       (with-current-buffer ledit-buffer
  98         (goto-char (point-min))
  99         (write-region (point-min) (point-max) ledit-zap-file)
 100         (erase-buffer)))
 101   (suspend-emacs ledit-go-to-lisp-string)
 102   (load ledit-read-file t t))
 103
 104 (defun ledit-go-to-liszt ()
 105   "Suspend Emacs and restart a waiting Liszt job."
 106   (interactive)
 107   (if ledit-save-files
 108       (save-some-buffers))
 109   (if (get-buffer ledit-buffer)
 110       (with-current-buffer ledit-buffer
 111         (goto-char (point-min))
 112         (insert "(declare (macros t))\n")
 113         (write-region (point-min) (point-max) ledit-compile-file)
 114         (erase-buffer)))
 115   (suspend-emacs ledit-go-to-liszt-string)
 116   (load ledit-read-file t t))
 117
 118 (defun ledit-setup ()
 119   "Set up key bindings for the Lisp/Emacs interface."
 120   (unless ledit-mode-map
 121     (setq ledit-mode-map (make-sparse-keymap))
 122     (set-keymap-parent ledit-mode-map lisp-mode-shared-map))
 123   (define-key ledit-mode-map "\e\^d" 'ledit-save-defun)
 124   (define-key ledit-mode-map "\e\^r" 'ledit-save-region)
 125   (define-key ledit-mode-map "\^xz" 'ledit-go-to-lisp)
 126   (define-key ledit-mode-map "\e\^c" 'ledit-go-to-liszt))
 127
 128 (ledit-setup)
 129
 130 ;;;###autoload
 131 (defun ledit-mode ()
 132   "\\<ledit-mode-map>Major mode for editing text and stuffing it to a Lisp job.
 133 Like Lisp mode, plus these special commands:
 134   \\[ledit-save-defun]  -- record defun at or after point
 135            for later transmission to Lisp job.
 136   \\[ledit-save-region] -- record region for later transmission to Lisp job.
 137   \\[ledit-go-to-lisp] -- transfer to Lisp job and transmit saved text.
 138   \\[ledit-go-to-liszt] -- transfer to Liszt (Lisp compiler) job
 139            and transmit saved text.
 140
 141 \\{ledit-mode-map}
 142 To make Lisp mode automatically change to Ledit mode,
 143 do (setq lisp-mode-hook 'ledit-from-lisp-mode)"
 144   (interactive)
 145   (delay-mode-hooks (lisp-mode))
 146   (ledit-from-lisp-mode))
 147
 148 ;;;###autoload
 149 (defun ledit-from-lisp-mode ()
 150   (use-local-map ledit-mode-map)
 151   (setq mode-name "Ledit")
 152   (setq major-mode 'ledit-mode)
 153   (run-mode-hooks 'ledit-mode-hook))
 154
 155 (provide 'ledit)
 156
 157 ;; arch-tag: f0f1ca13-8d31-478c-ae1b-b448c55a8faf
 158 ;;; ledit.el ends here