lisp/ledit.el

   1 ;;; ledit.el --- Emacs side of ledit interface
   2
   3 ;; Copyright (C) 1985 Free Software Foundation, Inc.
   4
   5 ;; This file is part of GNU Emacs.
   6
   7 ;; GNU Emacs is free software; you can redistribute it and/or modify
   8 ;; it under the terms of the GNU General Public License as published by
   9 ;; the Free Software Foundation; either version 1, or (at your option)
  10 ;; any later version.
  11
  12 ;; GNU Emacs is distributed in the hope that it will be useful,
  13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 ;; GNU General Public License for more details.
  16
  17 ;; You should have received a copy of the GNU General Public License
  18 ;; along with GNU Emacs; see the file COPYING.  If not, write to
  19 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  20
  21
  22 ;;; To do:
  23 ;;; o lisp -> emacs side of things (grind-definition and find-definition)
  24
  25 (defvar ledit-mode-map nil)
  26
  27 (defconst ledit-zap-file (concat "/tmp/" (user-login-name) ".l1")
  28   "File name for data sent to Lisp by Ledit.")
  29 (defconst ledit-read-file (concat "/tmp/" (user-login-name) ".l2")
  30   "File name for data sent to Ledit by Lisp.")
  31 (defconst ledit-compile-file
  32   (concat "/tmp/" (user-login-name) ".l4")
  33   "File name for data sent to Lisp compiler by Ledit.")
  34 (defconst ledit-buffer "*LEDIT*"
  35   "Name of buffer in which Ledit accumulates data to send to Lisp.")
  36
  37 ;;;###autoload
  38 (defconst ledit-save-files t "\
  39 *Non-nil means Ledit should save files before transferring to Lisp.")
  40 ;;;###autoload
  41 (defconst ledit-go-to-lisp-string "%?lisp" "\
  42 *Shell commands to execute to resume Lisp job.")
  43 ;;;###autoload
  44 (defconst ledit-go-to-liszt-string "%?liszt" "\
  45 *Shell commands to execute to resume Lisp compiler job.")
  46
  47 (defun ledit-save-defun ()
  48   "Save the current defun in the ledit buffer"
  49   (interactive)
  50   (save-excursion
  51    (end-of-defun)
  52    (let ((end (point)))
  53      (beginning-of-defun)
  54      (append-to-buffer ledit-buffer (point) end))
  55    (message "Current defun saved for Lisp")))
  56
  57 (defun ledit-save-region (beg end)
  58   "Save the current region in the ledit buffer"
  59   (interactive "r")
  60   (append-to-buffer ledit-buffer beg end)
  61   (message "Region saved for Lisp"))
  62
  63 (defun ledit-zap-defun-to-lisp ()
  64   "Carry the current defun to Lisp."
  65   (interactive)
  66   (ledit-save-defun)
  67   (ledit-go-to-lisp))
  68
  69 (defun ledit-zap-defun-to-liszt ()
  70   "Carry the current defun to liszt."
  71   (interactive)
  72   (ledit-save-defun)
  73   (ledit-go-to-liszt))
  74
  75 (defun ledit-zap-region-to-lisp (beg end)
  76   "Carry the current region to Lisp."
  77   (interactive "r")
  78   (ledit-save-region beg end)
  79   (ledit-go-to-lisp))
  80
  81 (defun ledit-go-to-lisp ()
  82   "Suspend Emacs and restart a waiting Lisp job."
  83   (interactive)
  84   (if ledit-save-files
  85       (save-some-buffers))
  86   (if (get-buffer ledit-buffer)
  87       (save-excursion
  88        (set-buffer ledit-buffer)
  89        (goto-char (point-min))
  90        (write-region (point-min) (point-max) ledit-zap-file)
  91        (erase-buffer)))
  92   (suspend-emacs ledit-go-to-lisp-string)
  93   (load ledit-read-file t t))
  94
  95 (defun ledit-go-to-liszt ()
  96   "Suspend Emacs and restart a waiting Liszt job."
  97   (interactive)
  98   (if ledit-save-files
  99       (save-some-buffers))
 100   (if (get-buffer ledit-buffer)
 101       (save-excursion
 102        (set-buffer ledit-buffer)
 103        (goto-char (point-min))
 104        (insert "(declare (macros t))\n")
 105        (write-region (point-min) (point-max) ledit-compile-file)
 106        (erase-buffer)))
 107   (suspend-emacs ledit-go-to-liszt-string)
 108   (load ledit-read-file t t))
 109
 110 (defun ledit-setup ()
 111   "Set up key bindings for the Lisp/Emacs interface."
 112   (if (not ledit-mode-map)
 113       (progn (setq ledit-mode-map (make-sparse-keymap))
 114              (lisp-mode-commands ledit-mode-map)))
 115   (define-key ledit-mode-map "\e\^d" 'ledit-save-defun)
 116   (define-key ledit-mode-map "\e\^r" 'ledit-save-region)
 117   (define-key ledit-mode-map "\^xz" 'ledit-go-to-lisp)
 118   (define-key ledit-mode-map "\e\^c" 'ledit-go-to-liszt))
 119
 120 (ledit-setup)
 121
 122 ;;;###autoload
 123 (defun ledit-mode ()
 124   "\\<ledit-mode-map>Major mode for editing text and stuffing it to a Lisp job.
 125 Like Lisp mode, plus these special commands:
 126   \\[ledit-save-defun]  -- record defun at or after point
 127            for later transmission to Lisp job.
 128   \\[ledit-save-region] -- record region for later transmission to Lisp job.
 129   \\[ledit-go-to-lisp] -- transfer to Lisp job and transmit saved text.
 130   \\[ledit-go-to-liszt] -- transfer to Liszt (Lisp compiler) job
 131            and transmit saved text.
 132 \\{ledit-mode-map}
 133 To make Lisp mode automatically change to Ledit mode,
 134 do (setq lisp-mode-hook 'ledit-from-lisp-mode)"
 135   (interactive)
 136   (lisp-mode)
 137   (ledit-from-lisp-mode))
 138
 139 ;;;###autoload
 140 (defun ledit-from-lisp-mode ()
 141   (use-local-map ledit-mode-map)
 142   (setq mode-name "Ledit")
 143   (setq major-mode 'ledit-mode)
 144   (run-hooks 'ledit-mode-hook))
 145
 146 ;;; ledit.el ends here