code.delx.au - gnu-emacs/blob - 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 ;These are now in loaddefs.el
  36 ;(defconst ledit-save-files t
  37 ;  "*Non-nil means Ledit should save files before transferring to Lisp.")
  38 ;(defconst ledit-go-to-lisp-string "%?lisp"
  39 ;  "*Shell commands to execute to resume Lisp job.")
  40 ;(defconst ledit-go-to-liszt-string "%?liszt"
  41 ;  "*Shell commands to execute to resume Lisp compiler job.")
  42
  43 (defun ledit-save-defun ()
  44   "Save the current defun in the ledit buffer"
  45   (interactive)
  46   (save-excursion
  47    (end-of-defun)
  48    (let ((end (point)))
  49      (beginning-of-defun)
  50      (append-to-buffer ledit-buffer (point) end))
  51    (message "Current defun saved for Lisp")))
  52
  53 (defun ledit-save-region (beg end)
  54   "Save the current region in the ledit buffer"
  55   (interactive "r")
  56   (append-to-buffer ledit-buffer beg end)
  57   (message "Region saved for Lisp"))
  58
  59 (defun ledit-zap-defun-to-lisp ()
  60   "Carry the current defun to Lisp."
  61   (interactive)
  62   (ledit-save-defun)
  63   (ledit-go-to-lisp))
  64
  65 (defun ledit-zap-defun-to-liszt ()
  66   "Carry the current defun to liszt."
  67   (interactive)
  68   (ledit-save-defun)
  69   (ledit-go-to-liszt))
  70
  71 (defun ledit-zap-region-to-lisp (beg end)
  72   "Carry the current region to Lisp."
  73   (interactive "r")
  74   (ledit-save-region beg end)
  75   (ledit-go-to-lisp))
  76
  77 (defun ledit-go-to-lisp ()
  78   "Suspend Emacs and restart a waiting Lisp job."
  79   (interactive)
  80   (if ledit-save-files
  81       (save-some-buffers))
  82   (if (get-buffer ledit-buffer)
  83       (save-excursion
  84        (set-buffer ledit-buffer)
  85        (goto-char (point-min))
  86        (write-region (point-min) (point-max) ledit-zap-file)
  87        (erase-buffer)))
  88   (suspend-emacs ledit-go-to-lisp-string)
  89   (load ledit-read-file t t))
  90
  91 (defun ledit-go-to-liszt ()
  92   "Suspend Emacs and restart a waiting Liszt job."
  93   (interactive)
  94   (if ledit-save-files
  95       (save-some-buffers))
  96   (if (get-buffer ledit-buffer)
  97       (save-excursion
  98        (set-buffer ledit-buffer)
  99        (goto-char (point-min))
 100        (insert "(declare (macros t))\n")
 101        (write-region (point-min) (point-max) ledit-compile-file)
 102        (erase-buffer)))
 103   (suspend-emacs ledit-go-to-liszt-string)
 104   (load ledit-read-file t t))
 105
 106 (defun ledit-setup ()
 107   "Set up key bindings for the Lisp/Emacs interface."
 108   (if (not ledit-mode-map)
 109       (progn (setq ledit-mode-map (make-sparse-keymap))
 110              (lisp-mode-commands ledit-mode-map)))
 111   (define-key ledit-mode-map "\e\^d" 'ledit-save-defun)
 112   (define-key ledit-mode-map "\e\^r" 'ledit-save-region)
 113   (define-key ledit-mode-map "\^xz" 'ledit-go-to-lisp)
 114   (define-key ledit-mode-map "\e\^c" 'ledit-go-to-liszt))
 115
 116 (ledit-setup)
 117
 118 (defun ledit-mode ()
 119   "\\<ledit-mode-map>Major mode for editing text and stuffing it to a Lisp job.
 120 Like Lisp mode, plus these special commands:
 121   \\[ledit-save-defun]  -- record defun at or after point
 122            for later transmission to Lisp job.
 123   \\[ledit-save-region] -- record region for later transmission to Lisp job.
 124   \\[ledit-go-to-lisp] -- transfer to Lisp job and transmit saved text.
 125   \\[ledit-go-to-liszt] -- transfer to Liszt (Lisp compiler) job
 126            and transmit saved text.
 127 \\{ledit-mode-map}
 128 To make Lisp mode automatically change to Ledit mode,
 129 do (setq lisp-mode-hook 'ledit-from-lisp-mode)"
 130   (interactive)
 131   (lisp-mode)
 132   (ledit-from-lisp-mode))
 133
 134 (defun ledit-from-lisp-mode ()
 135   (use-local-map ledit-mode-map)
 136   (setq mode-name "Ledit")
 137   (setq major-mode 'ledit-mode)
 138   (run-hooks 'ledit-mode-hook))