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;;; ledit.el --- Emacs side of ledit interface
;; Copyright (C) 1985 Free Software Foundation, Inc.
;; Maintainer: FSF
;; Keyword: languages
;; This file is part of GNU Emacs.
;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;; This is a major mode for editing Liszt. See etc/LEDIT for details.
;;; Code:
;;; To do:
;;; o lisp -> emacs side of things (grind-definition and find-definition)
(defvar ledit-mode-map nil)
(defconst ledit-zap-file (concat "/tmp/" (user-login-name) ".l1")
"File name for data sent to Lisp by Ledit.")
(defconst ledit-read-file (concat "/tmp/" (user-login-name) ".l2")
"File name for data sent to Ledit by Lisp.")
(defconst ledit-compile-file
(concat "/tmp/" (user-login-name) ".l4")
"File name for data sent to Lisp compiler by Ledit.")
(defconst ledit-buffer "*LEDIT*"
"Name of buffer in which Ledit accumulates data to send to Lisp.")
;;;###autoload
(defconst ledit-save-files t "\
*Non-nil means Ledit should save files before transferring to Lisp.")
;;;###autoload
(defconst ledit-go-to-lisp-string "%?lisp" "\
*Shell commands to execute to resume Lisp job.")
;;;###autoload
(defconst ledit-go-to-liszt-string "%?liszt" "\
*Shell commands to execute to resume Lisp compiler job.")
(defun ledit-save-defun ()
"Save the current defun in the ledit buffer"
(interactive)
(save-excursion
(end-of-defun)
(let ((end (point)))
(beginning-of-defun)
(append-to-buffer ledit-buffer (point) end))
(message "Current defun saved for Lisp")))
(defun ledit-save-region (beg end)
"Save the current region in the ledit buffer"
(interactive "r")
(append-to-buffer ledit-buffer beg end)
(message "Region saved for Lisp"))
(defun ledit-zap-defun-to-lisp ()
"Carry the current defun to Lisp."
(interactive)
(ledit-save-defun)
(ledit-go-to-lisp))
(defun ledit-zap-defun-to-liszt ()
"Carry the current defun to liszt."
(interactive)
(ledit-save-defun)
(ledit-go-to-liszt))
(defun ledit-zap-region-to-lisp (beg end)
"Carry the current region to Lisp."
(interactive "r")
(ledit-save-region beg end)
(ledit-go-to-lisp))
(defun ledit-go-to-lisp ()
"Suspend Emacs and restart a waiting Lisp job."
(interactive)
(if ledit-save-files
(save-some-buffers))
(if (get-buffer ledit-buffer)
(save-excursion
(set-buffer ledit-buffer)
(goto-char (point-min))
(write-region (point-min) (point-max) ledit-zap-file)
(erase-buffer)))
(suspend-emacs ledit-go-to-lisp-string)
(load ledit-read-file t t))
(defun ledit-go-to-liszt ()
"Suspend Emacs and restart a waiting Liszt job."
(interactive)
(if ledit-save-files
(save-some-buffers))
(if (get-buffer ledit-buffer)
(save-excursion
(set-buffer ledit-buffer)
(goto-char (point-min))
(insert "(declare (macros t))\n")
(write-region (point-min) (point-max) ledit-compile-file)
(erase-buffer)))
(suspend-emacs ledit-go-to-liszt-string)
(load ledit-read-file t t))
(defun ledit-setup ()
"Set up key bindings for the Lisp/Emacs interface."
(if (not ledit-mode-map)
(progn (setq ledit-mode-map (nconc (make-sparse-keymap)
shared-lisp-mode-map))))
(define-key ledit-mode-map "\e\^d" 'ledit-save-defun)
(define-key ledit-mode-map "\e\^r" 'ledit-save-region)
(define-key ledit-mode-map "\^xz" 'ledit-go-to-lisp)
(define-key ledit-mode-map "\e\^c" 'ledit-go-to-liszt))
(ledit-setup)
;;;###autoload
(defun ledit-mode ()
"\\<ledit-mode-map>Major mode for editing text and stuffing it to a Lisp job.
Like Lisp mode, plus these special commands:
\\[ledit-save-defun] -- record defun at or after point
for later transmission to Lisp job.
\\[ledit-save-region] -- record region for later transmission to Lisp job.
\\[ledit-go-to-lisp] -- transfer to Lisp job and transmit saved text.
\\[ledit-go-to-liszt] -- transfer to Liszt (Lisp compiler) job
and transmit saved text.
\\{ledit-mode-map}
To make Lisp mode automatically change to Ledit mode,
do (setq lisp-mode-hook 'ledit-from-lisp-mode)"
(interactive)
(lisp-mode)
(ledit-from-lisp-mode))
;;;###autoload
(defun ledit-from-lisp-mode ()
(use-local-map ledit-mode-map)
(setq mode-name "Ledit")
(setq major-mode 'ledit-mode)
(run-hooks 'ledit-mode-hook))
(provide 'ledit)
;;; ledit.el ends here
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