code.delx.au - gnu-emacs/blob - lisp/ledit.el

   1 ;;; ledit.el --- Emacs side of ledit interface
   2
   3 ;; Copyright (C) 1985 Free Software Foundation, Inc.
   4
   5 ;; Maintainer: FSF
   6 ;; Keyword: 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 2, or (at your option)
  13 ;; 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; see the file COPYING.  If not, write to
  22 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  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 (concat "/tmp/" (user-login-name) ".l1")
  36   "File name for data sent to Lisp by Ledit.")
  37 (defconst ledit-read-file (concat "/tmp/" (user-login-name) ".l2")
  38   "File name for data sent to Ledit by Lisp.")
  39 (defconst ledit-compile-file
  40   (concat "/tmp/" (user-login-name) ".l4")
  41   "File name for data sent to Lisp compiler by Ledit.")
  42 (defconst ledit-buffer "*LEDIT*"
  43   "Name of buffer in which Ledit accumulates data to send to Lisp.")
  44
  45 ;;;###autoload
  46 (defconst ledit-save-files t "\
  47 *Non-nil means Ledit should save files before transferring to Lisp.")
  48 ;;;###autoload
  49 (defconst ledit-go-to-lisp-string "%?lisp" "\
  50 *Shell commands to execute to resume Lisp job.")
  51 ;;;###autoload
  52 (defconst ledit-go-to-liszt-string "%?liszt" "\
  53 *Shell commands to execute to resume Lisp compiler job.")
  54
  55 (defun ledit-save-defun ()
  56   "Save the current defun in the ledit buffer"
  57   (interactive)
  58   (save-excursion
  59    (end-of-defun)
  60    (let ((end (point)))
  61      (beginning-of-defun)
  62      (append-to-buffer ledit-buffer (point) end))
  63    (message "Current defun saved for Lisp")))
  64
  65 (defun ledit-save-region (beg end)
  66   "Save the current region in the ledit buffer"
  67   (interactive "r")
  68   (append-to-buffer ledit-buffer beg end)
  69   (message "Region saved for Lisp"))
  70
  71 (defun ledit-zap-defun-to-lisp ()
  72   "Carry the current defun to Lisp."
  73   (interactive)
  74   (ledit-save-defun)
  75   (ledit-go-to-lisp))
  76
  77 (defun ledit-zap-defun-to-liszt ()
  78   "Carry the current defun to liszt."
  79   (interactive)
  80   (ledit-save-defun)
  81   (ledit-go-to-liszt))
  82
  83 (defun ledit-zap-region-to-lisp (beg end)
  84   "Carry the current region to Lisp."
  85   (interactive "r")
  86   (ledit-save-region beg end)
  87   (ledit-go-to-lisp))
  88
  89 (defun ledit-go-to-lisp ()
  90   "Suspend Emacs and restart a waiting Lisp job."
  91   (interactive)
  92   (if ledit-save-files
  93       (save-some-buffers))
  94   (if (get-buffer ledit-buffer)
  95       (save-excursion
  96        (set-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       (save-excursion
 110        (set-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   (if (not ledit-mode-map)
 121       (progn (setq ledit-mode-map (nconc (make-sparse-keymap)
 122                                          shared-lisp-mode-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 \\{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   (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-hooks 'ledit-mode-hook))
 153
 154 ;;; ledit.el ends here