1;;; ledit.el --- Emacs side of ledit interface
2
3;; Copyright (C) 1985, 2001, 2002, 2003, 2004, 2005,
4;;   2006, 2007 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 2, 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.
137Like 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}
146To make Lisp mode automatically change to Ledit mode,
147do (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
163