lisp/ledit.el

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