lisp/ledit.el

   1 ;;; ledit.el --- Emacs side of ledit interface
   2
   3 ;; Copyright (C) 1985, 2001-2011 Free Software Foundation, Inc.
   4
   5 ;; Maintainer: FSF
   6 ;; Keywords: 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 3 of the License, or
  13 ;; (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.
  22
  23 ;;; Commentary:
  24
  25 ;; This is a major mode for editing Liszt.  See etc/LEDIT for details.
  26
  27 ;;; Code:
  28
  29 ;;; To do:
  30 ;;; o lisp -> emacs side of things (grind-definition and find-definition)
  31
  32 (defvar ledit-mode-map nil)
  33
  34 (defconst ledit-zap-file
  35   (expand-file-name (concat (user-login-name) ".l1") temporary-file-directory)
  36   "File name for data sent to Lisp by Ledit.")
  37 (defconst ledit-read-file
  38   (expand-file-name (concat (user-login-name) ".l2") temporary-file-directory)
  39   "File name for data sent to Ledit by Lisp.")
  40 (defconst ledit-compile-file
  41   (expand-file-name (concat (user-login-name) ".l4") temporary-file-directory)
  42   "File name for data sent to Lisp compiler by Ledit.")
  43 (defconst ledit-buffer "*LEDIT*"
  44   "Name of buffer in which Ledit accumulates data to send to Lisp.")
  45
  46 ;;;###autoload
  47 (defconst ledit-save-files t "\
  48 *Non-nil means Ledit should save files before transferring to Lisp.")
  49 ;;;###autoload
  50 (defconst ledit-go-to-lisp-string "%?lisp" "\
  51 *Shell commands to execute to resume Lisp job.")
  52 ;;;###autoload
  53 (defconst ledit-go-to-liszt-string "%?liszt" "\
  54 *Shell commands to execute to resume Lisp compiler job.")
  55
  56 (defun ledit-save-defun ()
  57   "Save the current defun in the ledit buffer."
  58   (interactive)
  59   (save-excursion
  60    (end-of-defun)
  61    (let ((end (point)))
  62      (beginning-of-defun)
  63      (append-to-buffer ledit-buffer (point) end))
  64    (message "Current defun saved for Lisp")))
  65
  66 (defun ledit-save-region (beg end)
  67   "Save the current region in the ledit buffer"
  68   (interactive "r")
  69   (append-to-buffer ledit-buffer beg end)
  70   (message "Region saved for Lisp"))
  71
  72 (defun ledit-zap-defun-to-lisp ()
  73   "Carry the current defun to Lisp."
  74   (interactive)
  75   (ledit-save-defun)
  76   (ledit-go-to-lisp))
  77
  78 (defun ledit-zap-defun-to-liszt ()
  79   "Carry the current defun to liszt."
  80   (interactive)
  81   (ledit-save-defun)
  82   (ledit-go-to-liszt))
  83
  84 (defun ledit-zap-region-to-lisp (beg end)
  85   "Carry the current region to Lisp."
  86   (interactive "r")
  87   (ledit-save-region beg end)
  88   (ledit-go-to-lisp))
  89
  90 (defun ledit-go-to-lisp ()
  91   "Suspend Emacs and restart a waiting Lisp job."
  92   (interactive)
  93   (if ledit-save-files
  94       (save-some-buffers))
  95   (if (get-buffer ledit-buffer)
  96       (with-current-buffer ledit-buffer
  97         (goto-char (point-min))
  98         (write-region (point-min) (point-max) ledit-zap-file)
  99         (erase-buffer)))
 100   (suspend-emacs ledit-go-to-lisp-string)
 101   (load ledit-read-file t t))
 102
 103 (defun ledit-go-to-liszt ()
 104   "Suspend Emacs and restart a waiting Liszt job."
 105   (interactive)
 106   (if ledit-save-files
 107       (save-some-buffers))
 108   (if (get-buffer ledit-buffer)
 109       (with-current-buffer ledit-buffer
 110         (goto-char (point-min))
 111         (insert "(declare (macros t))\n")
 112         (write-region (point-min) (point-max) ledit-compile-file)
 113         (erase-buffer)))
 114   (suspend-emacs ledit-go-to-liszt-string)
 115   (load ledit-read-file t t))
 116
 117 (defun ledit-setup ()
 118   "Set up key bindings for the Lisp/Emacs interface."
 119   (unless ledit-mode-map
 120     (setq ledit-mode-map (make-sparse-keymap))
 121     (set-keymap-parent ledit-mode-map lisp-mode-shared-map))
 122   (define-key ledit-mode-map "\e\^d" 'ledit-save-defun)
 123   (define-key ledit-mode-map "\e\^r" 'ledit-save-region)
 124   (define-key ledit-mode-map "\^xz" 'ledit-go-to-lisp)
 125   (define-key ledit-mode-map "\e\^c" 'ledit-go-to-liszt))
 126
 127 (ledit-setup)
 128
 129 ;;;###autoload
 130 (defun ledit-mode ()
 131   "\\<ledit-mode-map>Major mode for editing text and stuffing it to a Lisp job.
 132 Like Lisp mode, plus these special commands:
 133   \\[ledit-save-defun]  -- record defun at or after point
 134            for later transmission to Lisp job.
 135   \\[ledit-save-region] -- record region for later transmission to Lisp job.
 136   \\[ledit-go-to-lisp] -- transfer to Lisp job and transmit saved text.
 137   \\[ledit-go-to-liszt] -- transfer to Liszt (Lisp compiler) job
 138            and transmit saved text.
 139
 140 \\{ledit-mode-map}
 141 To make Lisp mode automatically change to Ledit mode,
 142 do (setq lisp-mode-hook 'ledit-from-lisp-mode)"
 143   (interactive)
 144   (delay-mode-hooks (lisp-mode))
 145   (ledit-from-lisp-mode))
 146
 147 ;;;###autoload
 148 (defun ledit-from-lisp-mode ()
 149   (use-local-map ledit-mode-map)
 150   (setq mode-name "Ledit")
 151   (setq major-mode 'ledit-mode)
 152   (run-mode-hooks 'ledit-mode-hook))
 153
 154 (provide 'ledit)
 155
 156 ;;; ledit.el ends here