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 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, or (at your option)
  14 ;; 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; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  24 ;; Boston, MA 02110-1301, USA.
  25
  26 ;;; Commentary:
  27
  28 ;; This is a major mode for editing Liszt.  See etc/LEDIT for details.
  29
  30 ;;; Code:
  31
  32 ;;; To do:
  33 ;;; o lisp -> emacs side of things (grind-definition and find-definition)
  34
  35 (defvar ledit-mode-map nil)
  36
  37 (defconst ledit-zap-file
  38   (expand-file-name (concat (user-login-name) ".l1") temporary-file-directory)
  39   "File name for data sent to Lisp by Ledit.")
  40 (defconst ledit-read-file
  41   (expand-file-name (concat (user-login-name) ".l2") temporary-file-directory)
  42   "File name for data sent to Ledit by Lisp.")
  43 (defconst ledit-compile-file
  44   (expand-file-name (concat (user-login-name) ".l4") temporary-file-directory)
  45   "File name for data sent to Lisp compiler by Ledit.")
  46 (defconst ledit-buffer "*LEDIT*"
  47   "Name of buffer in which Ledit accumulates data to send to Lisp.")
  48
  49 ;;;###autoload
  50 (defconst ledit-save-files t "\
  51 *Non-nil means Ledit should save files before transferring to Lisp.")
  52 ;;;###autoload
  53 (defconst ledit-go-to-lisp-string "%?lisp" "\
  54 *Shell commands to execute to resume Lisp job.")
  55 ;;;###autoload
  56 (defconst ledit-go-to-liszt-string "%?liszt" "\
  57 *Shell commands to execute to resume Lisp compiler job.")
  58
  59 (defun ledit-save-defun ()
  60   "Save the current defun in the ledit buffer."
  61   (interactive)
  62   (save-excursion
  63    (end-of-defun)
  64    (let ((end (point)))
  65      (beginning-of-defun)
  66      (append-to-buffer ledit-buffer (point) end))
  67    (message "Current defun saved for Lisp")))
  68
  69 (defun ledit-save-region (beg end)
  70   "Save the current region in the ledit buffer"
  71   (interactive "r")
  72   (append-to-buffer ledit-buffer beg end)
  73   (message "Region saved for Lisp"))
  74
  75 (defun ledit-zap-defun-to-lisp ()
  76   "Carry the current defun to Lisp."
  77   (interactive)
  78   (ledit-save-defun)
  79   (ledit-go-to-lisp))
  80
  81 (defun ledit-zap-defun-to-liszt ()
  82   "Carry the current defun to liszt."
  83   (interactive)
  84   (ledit-save-defun)
  85   (ledit-go-to-liszt))
  86
  87 (defun ledit-zap-region-to-lisp (beg end)
  88   "Carry the current region to Lisp."
  89   (interactive "r")
  90   (ledit-save-region beg end)
  91   (ledit-go-to-lisp))
  92
  93 (defun ledit-go-to-lisp ()
  94   "Suspend Emacs and restart a waiting Lisp job."
  95   (interactive)
  96   (if ledit-save-files
  97       (save-some-buffers))
  98   (if (get-buffer ledit-buffer)
  99       (save-excursion
 100        (set-buffer ledit-buffer)
 101        (goto-char (point-min))
 102        (write-region (point-min) (point-max) ledit-zap-file)
 103        (erase-buffer)))
 104   (suspend-emacs ledit-go-to-lisp-string)
 105   (load ledit-read-file t t))
 106
 107 (defun ledit-go-to-liszt ()
 108   "Suspend Emacs and restart a waiting Liszt job."
 109   (interactive)
 110   (if ledit-save-files
 111       (save-some-buffers))
 112   (if (get-buffer ledit-buffer)
 113       (save-excursion
 114        (set-buffer ledit-buffer)
 115        (goto-char (point-min))
 116        (insert "(declare (macros t))\n")
 117        (write-region (point-min) (point-max) ledit-compile-file)
 118        (erase-buffer)))
 119   (suspend-emacs ledit-go-to-liszt-string)
 120   (load ledit-read-file t t))
 121
 122 (defun ledit-setup ()
 123   "Set up key bindings for the Lisp/Emacs interface."
 124   (unless ledit-mode-map
 125     (setq ledit-mode-map (make-sparse-keymap))
 126     (set-keymap-parent ledit-mode-map lisp-mode-shared-map))
 127   (define-key ledit-mode-map "\e\^d" 'ledit-save-defun)
 128   (define-key ledit-mode-map "\e\^r" 'ledit-save-region)
 129   (define-key ledit-mode-map "\^xz" 'ledit-go-to-lisp)
 130   (define-key ledit-mode-map "\e\^c" 'ledit-go-to-liszt))
 131
 132 (ledit-setup)
 133
 134 ;;;###autoload
 135 (defun ledit-mode ()
 136   "\\<ledit-mode-map>Major mode for editing text and stuffing it to a Lisp job.
 137 Like Lisp mode, plus these special commands:
 138   \\[ledit-save-defun]  -- record defun at or after point
 139            for later transmission to Lisp job.
 140   \\[ledit-save-region] -- record region for later transmission to Lisp job.
 141   \\[ledit-go-to-lisp] -- transfer to Lisp job and transmit saved text.
 142   \\[ledit-go-to-liszt] -- transfer to Liszt (Lisp compiler) job
 143            and transmit saved text.
 144
 145 \\{ledit-mode-map}
 146 To make Lisp mode automatically change to Ledit mode,
 147 do (setq lisp-mode-hook 'ledit-from-lisp-mode)"
 148   (interactive)
 149   (delay-mode-hooks (lisp-mode))
 150   (ledit-from-lisp-mode))
 151
 152 ;;;###autoload
 153 (defun ledit-from-lisp-mode ()
 154   (use-local-map ledit-mode-map)
 155   (setq mode-name "Ledit")
 156   (setq major-mode 'ledit-mode)
 157   (run-mode-hooks 'ledit-mode-hook))
 158
 159 (provide 'ledit)
 160
 161 ;;; arch-tag: f0f1ca13-8d31-478c-ae1b-b448c55a8faf
 162 ;;; ledit.el ends here