[gforth] / gforth / gforth.el  

gforth: gforth/gforth.el


1 : anton 1.1 ;; This file is part of GNU Emacs.
2 :     ;; Changes by anton
3 : anton 1.6 ;; This is a variant of forth.el that came with TILE.
4 : anton 1.5 ;; I left most of this stuff untouched and made just a few changes for
5 : anton 1.6 ;; the things I use (mainly indentation and syntax tables).
6 :     ;; So there is still a lot of work to do to adapt this to gforth.
7 : anton 1.1
8 :     ;; GNU Emacs is distributed in the hope that it will be useful,
9 :     ;; but WITHOUT ANY WARRANTY. No author or distributor
10 :     ;; accepts responsibility to anyone for the consequences of using it
11 :     ;; or for whether it serves any particular purpose or works at all,
12 :     ;; unless he says so in writing. Refer to the GNU Emacs General Public
13 :     ;; License for full details.
14 :    
15 :     ;; Everyone is granted permission to copy, modify and redistribute
16 :     ;; GNU Emacs, but only under the conditions described in the
17 :     ;; GNU Emacs General Public License. A copy of this license is
18 :     ;; supposed to have been given to you along with GNU Emacs so you
19 :     ;; can know your rights and responsibilities. It should be in a
20 :     ;; file named COPYING. Among other things, the copyright notice
21 :     ;; and this notice must be preserved on all copies.
22 :    
23 : pazsan 1.12 ;;; $Header: /usr/local/lib/cvs-repository/src-master/gforth/gforth.el,v 1.11 1995/01/30 18:47:48 anton Exp $
24 : anton 1.1
25 :     ;;-------------------------------------------------------------------
26 :     ;; A Forth indentation, documentation search and interaction library
27 :     ;;-------------------------------------------------------------------
28 :     ;;
29 :     ;; Written by Goran Rydqvist, gorry@ida.liu.se, Summer 1988
30 :     ;; Started: 16 July 88
31 :     ;; Version: 2.10
32 :     ;; Last update: 5 December 1989 by Mikael Patel, mip@ida.liu.se
33 :     ;; Last update: 25 June 1990 by Goran Rydqvist, gorry@ida.liu.se
34 :     ;;
35 :     ;; Documentation: See forth-mode (^HF forth-mode)
36 :     ;;-------------------------------------------------------------------
37 :    
38 :    
39 :     (defvar forth-positives
40 : pazsan 1.13 " : :noname begin do ?do while if ?dup-if ?dup-not-if else case struct [if] [else] "
41 : anton 1.1 "Contains all words which will cause the indent-level to be incremented
42 :     on the next line.
43 :     OBS! All words in forth-positives must be surrounded by spaces.")
44 :    
45 :     (defvar forth-negatives
46 : pazsan 1.13 " ; until repeat while +loop loop s+loop else then endif again endcase end-struct [then] [else] [endif]"
47 : anton 1.1 "Contains all words which will cause the indent-level to be decremented
48 :     on the current line.
49 :     OBS! All words in forth-negatives must be surrounded by spaces.")
50 :    
51 :     (defvar forth-zeroes
52 : anton 1.5 " : :noname "
53 : anton 1.1 "Contains all words which causes the indent to go to zero")
54 :    
55 : anton 1.6 (defvar forth-prefixes
56 :     " postpone [compile] ['] [char] "
57 :     "words that prefix and escape other words")
58 :    
59 : anton 1.1 (defvar forth-mode-abbrev-table nil
60 :     "Abbrev table in use in Forth-mode buffers.")
61 :    
62 :     (define-abbrev-table 'forth-mode-abbrev-table ())
63 :    
64 :     (defvar forth-mode-map nil
65 :     "Keymap used in Forth mode.")
66 :    
67 :     (if (not forth-mode-map)
68 :     (setq forth-mode-map (make-sparse-keymap)))
69 :    
70 :     (global-set-key "\e\C-m" 'forth-send-paragraph)
71 :     (global-set-key "\C-x\C-m" 'forth-split)
72 :     (global-set-key "\e " 'forth-reload)
73 :    
74 : anton 1.9 ;(define-key forth-mode-map "\M-\C-x" 'compile)
75 : anton 1.7 (define-key forth-mode-map "\C-x\\" 'comment-region)
76 :     (define-key forth-mode-map "\C-x~" 'forth-remove-tracers)
77 : anton 1.1 (define-key forth-mode-map "\e\C-m" 'forth-send-paragraph)
78 :     (define-key forth-mode-map "\eo" 'forth-send-buffer)
79 :     (define-key forth-mode-map "\C-x\C-m" 'forth-split)
80 :     (define-key forth-mode-map "\e " 'forth-reload)
81 :     (define-key forth-mode-map "\t" 'forth-indent-command)
82 :     (define-key forth-mode-map "\C-m" 'reindent-then-newline-and-indent)
83 : anton 1.7 (define-key forth-mode-map "\M-q" 'forth-fill-paragraph)
84 : pazsan 1.13 (define-key forth-mode-map "\e." 'forth-find-tag)
85 : anton 1.1
86 : pazsan 1.13 (load "etags.el")
87 :    
88 :     (defun forth-find-tag (tagname &optional next-p regexp-p)
89 :     (interactive (find-tag-interactive "Find tag: "))
90 :     (switch-to-buffer
91 :     (find-tag-noselect (concat " " tagname " ") next-p regexp-p)))
92 :    
93 : anton 1.1 (defvar forth-mode-syntax-table nil
94 :     "Syntax table in use in Forth-mode buffers.")
95 :    
96 :     (if (not forth-mode-syntax-table)
97 :     (progn
98 :     (setq forth-mode-syntax-table (make-syntax-table))
99 : anton 1.6 (let ((char 0))
100 :     (while (< char ?!)
101 :     (modify-syntax-entry char " " forth-mode-syntax-table)
102 :     (setq char (1+ char)))
103 :     (while (< char 256)
104 :     (modify-syntax-entry char "w" forth-mode-syntax-table)
105 :     (setq char (1+ char))))
106 :     (modify-syntax-entry ?\" "\"" forth-mode-syntax-table)
107 :     (modify-syntax-entry ?\\ "<" forth-mode-syntax-table)
108 :     (modify-syntax-entry ?\n ">" forth-mode-syntax-table)
109 :     ))
110 :     ;I do not define '(' and ')' as comment delimiters, because emacs
111 :     ;only supports one comment syntax (and a hack to accomodate C++); I
112 :     ;use '\' for natural language comments and '(' for formal comments
113 :     ;like stack comments, so for me it's better to have emacs treat '\'
114 : pazsan 1.13 ;comments as comments. If you want it different, make the appropriate
115 : anton 1.6 ;changes (best in your .emacs file).
116 :     ;
117 :     ;Hmm, the C++ hack could be used to support both comment syntaxes: we
118 :     ;can have different comment styles, if both comments start with the
119 :     ;same character. we could use ' ' as first and '(' and '\' as second
120 :     ;character. However this would fail for G\ comments.
121 : anton 1.1
122 :     (defconst forth-indent-level 4
123 :     "Indentation of Forth statements.")
124 :    
125 :     (defun forth-mode-variables ()
126 :     (set-syntax-table forth-mode-syntax-table)
127 :     (setq local-abbrev-table forth-mode-abbrev-table)
128 :     (make-local-variable 'paragraph-start)
129 :     (setq paragraph-start (concat "^$\\|" page-delimiter))
130 :     (make-local-variable 'paragraph-separate)
131 :     (setq paragraph-separate paragraph-start)
132 :     (make-local-variable 'indent-line-function)
133 :     (setq indent-line-function 'forth-indent-line)
134 : anton 1.6 ; (make-local-variable 'require-final-newline)
135 :     ; (setq require-final-newline t)
136 : anton 1.1 (make-local-variable 'comment-start)
137 : anton 1.3 (setq comment-start "\\ ")
138 :     ;(make-local-variable 'comment-end)
139 :     ;(setq comment-end " )")
140 : anton 1.1 (make-local-variable 'comment-column)
141 :     (setq comment-column 40)
142 :     (make-local-variable 'comment-start-skip)
143 : anton 1.3 (setq comment-start-skip "\\ ")
144 : anton 1.1 (make-local-variable 'comment-indent-hook)
145 :     (setq comment-indent-hook 'forth-comment-indent)
146 :     (make-local-variable 'parse-sexp-ignore-comments)
147 :     (setq parse-sexp-ignore-comments t))
148 :    
149 : anton 1.2 ;;;###autoload
150 : anton 1.1 (defun forth-mode ()
151 :     "
152 :     Major mode for editing Forth code. Tab indents for Forth code. Comments
153 : anton 1.9 are delimited with \\ and newline. Paragraphs are separated by blank lines
154 :     only. Delete converts tabs to spaces as it moves back.
155 : anton 1.1 \\{forth-mode-map}
156 :     Forth-split
157 :     Positions the current buffer on top and a forth-interaction window
158 :     below. The window size is controlled by the forth-percent-height
159 :     variable (see below).
160 :     Forth-reload
161 :     Reloads the forth library and restarts the forth process.
162 :     Forth-send-buffer
163 :     Sends the current buffer, in text representation, as input to the
164 :     forth process.
165 :     Forth-send-paragraph
166 :     Sends the previous or the current paragraph to the forth-process.
167 :     Note that the cursor only need to be with in the paragraph to be sent.
168 :     forth-documentation
169 :     Search for documentation of forward adjacent to cursor. Note! To use
170 :     this mode you have to add a line, to your .emacs file, defining the
171 :     directories to search through for documentation files (se variable
172 :     forth-help-load-path below) e.g. (setq forth-help-load-path '(nil)).
173 :    
174 :     Variables controlling interaction and startup
175 :     forth-percent-height
176 :     Tells split how high to make the edit portion, in percent of the
177 :     current screen height.
178 :     forth-program-name
179 :     Tells the library which program name to execute in the interation
180 :     window.
181 :    
182 :     Variables controlling indentation style:
183 :     forth-positives
184 :     A string containing all words which causes the indent-level of the
185 :     following line to be incremented.
186 :     OBS! Each word must be surronded by spaces.
187 :     forth-negatives
188 :     A string containing all words which causes the indentation of the
189 :     current line to be decremented, if the word begin the line. These
190 :     words also has a cancelling effect on the indent-level of the
191 :     following line, independent of position.
192 :     OBS! Each word must be surronded by spaces.
193 :     forth-zeroes
194 :     A string containing all words which causes the indentation of the
195 :     current line to go to zero, if the word begin the line.
196 :     OBS! Each word must be surronded by spaces.
197 :     forth-indent-level
198 :     Indentation increment/decrement of Forth statements.
199 :    
200 :     Note! A word which decrements the indentation of the current line, may
201 :     also be mentioned in forth-positives to cause the indentation to
202 :     resume the previous level.
203 :    
204 :     Variables controling documentation search
205 :     forth-help-load-path
206 :     List of directories to search through to find *.doc
207 :     (forth-help-file-suffix) files. Nil means current default directory.
208 :     The specified directories must contain at least one .doc file. If it
209 :     does not and you still want the load-path to scan that directory, create
210 :     an empty file dummy.doc.
211 :     forth-help-file-suffix
212 :     The file names to search for in each directory specified by
213 :     forth-help-load-path. Defaulted to '*.doc'.
214 :     "
215 :     (interactive)
216 :     (kill-all-local-variables)
217 :     (use-local-map forth-mode-map)
218 :     (setq mode-name "Forth")
219 :     (setq major-mode 'forth-mode)
220 :     (forth-mode-variables)
221 :     ; (if (not (forth-process-running-p))
222 :     ; (run-forth forth-program-name))
223 :     (run-hooks 'forth-mode-hook))
224 :    
225 : anton 1.6 (setq forth-mode-hook
226 : anton 1.9 '(lambda ()
227 :     (make-local-variable 'compile-command)
228 :     (setq compile-command "gforth ")))
229 : anton 1.6
230 : anton 1.7 (defun forth-fill-paragraph ()
231 :     "Fill comments (starting with '\'; do not fill code (block style
232 :     programmers who tend to fill code won't use emacs anyway:-)."
233 : anton 1.9 ; Currently only comments at the start of the line are filled.
234 :     ; Something like lisp-fill-paragraph may be better. We cannot use
235 :     ; fill-paragraph, because it removes the \ from the first comment
236 :     ; line. Therefore we have to look for the first line of the comment
237 :     ; and use fill-region.
238 : anton 1.7 (interactive)
239 :     (save-excursion
240 :     (beginning-of-line)
241 : anton 1.9 (while (and
242 :     (= (forward-line -1) 0)
243 :     (looking-at "[ \t]*\\\\[ \t]+")))
244 :     (if (not (looking-at "[ \t]*\\\\[ \t]+"))
245 :     (forward-line 1))
246 :     (let ((from (point))
247 :     (to (save-excursion (forward-paragraph) (point))))
248 :     (if (looking-at "[ \t]*\\\\[ \t]+")
249 :     (progn (goto-char (match-end 0))
250 :     (set-fill-prefix)
251 :     (fill-region from to nil))))))
252 : anton 1.7
253 : anton 1.1 (defun forth-comment-indent ()
254 :     (save-excursion
255 :     (beginning-of-line)
256 :     (if (looking-at ":[ \t]*")
257 :     (progn
258 :     (end-of-line)
259 :     (skip-chars-backward " \t\n")
260 :     (1+ (current-column)))
261 :     comment-column)))
262 :    
263 :     (defun forth-current-indentation ()
264 :     (save-excursion
265 :     (beginning-of-line)
266 :     (back-to-indentation)
267 :     (current-column)))
268 :    
269 :     (defun forth-delete-indentation ()
270 :     (let ((b nil) (m nil))
271 :     (save-excursion
272 :     (beginning-of-line)
273 :     (setq b (point))
274 :     (back-to-indentation)
275 :     (setq m (point)))
276 :     (delete-region b m)))
277 :    
278 :     (defun forth-indent-line (&optional flag)
279 :     "Correct indentation of the current Forth line."
280 :     (let ((x (forth-calculate-indent)))
281 :     (forth-indent-to x)))
282 :    
283 :     (defun forth-indent-command ()
284 :     (interactive)
285 :     (forth-indent-line t))
286 :    
287 :     (defun forth-indent-to (x)
288 :     (let ((p nil))
289 :     (setq p (- (current-column) (forth-current-indentation)))
290 :     (forth-delete-indentation)
291 :     (beginning-of-line)
292 :     (indent-to x)
293 :     (if (> p 0) (forward-char p))))
294 :    
295 :     ;;Calculate indent
296 :     (defun forth-calculate-indent ()
297 :     (let ((w1 nil) (indent 0) (centre 0))
298 :     (save-excursion
299 :     (beginning-of-line)
300 :     (skip-chars-backward " \t\n")
301 :     (beginning-of-line)
302 :     (back-to-indentation)
303 :     (setq indent (current-column))
304 :     (setq centre indent)
305 :     (setq indent (+ indent (forth-sum-line-indentation))))
306 :     (save-excursion
307 :     (beginning-of-line)
308 :     (back-to-indentation)
309 :     (let ((p (point)))
310 :     (skip-chars-forward "^ \t\n")
311 :     (setq w1 (buffer-substring p (point)))))
312 :     (if (> (- indent centre) forth-indent-level)
313 :     (setq indent (+ centre forth-indent-level)))
314 :     (if (> (- centre indent) forth-indent-level)
315 :     (setq indent (- centre forth-indent-level)))
316 :     (if (< indent 0) (setq indent 0))
317 :     (setq indent (- indent
318 :     (if (string-match
319 :     (regexp-quote (concat " " w1 " "))
320 :     forth-negatives)
321 :     forth-indent-level 0)))
322 :     (if (string-match (regexp-quote (concat " " w1 " ")) forth-zeroes)
323 :     (setq indent 0))
324 :     indent))
325 :    
326 :     (defun forth-sum-line-indentation ()
327 :     "Add upp the positive and negative weights of all words on the current line."
328 :     (let ((b (point)) (e nil) (sum 0) (w nil) (t1 nil) (t2 nil) (first t))
329 :     (end-of-line) (setq e (point))
330 :     (goto-char b)
331 :     (while (< (point) e)
332 :     (setq w (forth-next-word))
333 :     (setq t1 (string-match (regexp-quote (concat " " w " "))
334 :     forth-positives))
335 :     (setq t2 (string-match (regexp-quote (concat " " w " "))
336 :     forth-negatives))
337 :     (if t1
338 :     (setq sum (+ sum forth-indent-level)))
339 :     (if (and t2 (not first))
340 :     (setq sum (- sum forth-indent-level)))
341 :     (skip-chars-forward " \t")
342 :     (setq first nil))
343 :     sum))
344 :    
345 :    
346 :     (defun forth-next-word ()
347 : anton 1.6 "Return the next forth-word. Skip anything that the forth-word takes from
348 :     the input stream (comments, arguments, etc.)"
349 :     ;actually, it would be better to use commands based on the
350 :     ;syntax-table or comment-start etc.
351 : anton 1.1 (let ((w1 nil))
352 :     (while (not w1)
353 :     (skip-chars-forward " \t\n")
354 :     (let ((p (point)))
355 :     (skip-chars-forward "^ \t\n")
356 :     (setq w1 (buffer-substring p (point))))
357 :     (cond ((string-match "\"" w1)
358 :     (progn
359 : anton 1.6 (skip-chars-forward "^\"\n")
360 :     (forward-char)))
361 :     ((string-match "\\\\" w1)
362 :     (progn
363 :     (end-of-line)
364 :     ))
365 :     ((or (equal "(" w1) (equal ".(" w1))
366 : anton 1.1 (progn
367 : anton 1.6 (skip-chars-forward "^)\n")
368 :     (forward-char)))
369 :     ((string-match (regexp-quote (concat " " w1 " ")) forth-prefixes)
370 :     (progn (skip-chars-forward " \t\n")
371 :     (skip-chars-forward "^ \t\n")))
372 : anton 1.1 (t nil)))
373 :     w1))
374 :    
375 :    
376 :     ;; Forth commands
377 :    
378 : anton 1.7 (defun forth-remove-tracers ()
379 :     "Remove tracers of the form `~~ '. Queries the user for each occurrence."
380 :     (interactive)
381 :     (query-replace "~~ " ""))
382 :    
383 : anton 1.5 (defvar forth-program-name "gforth"
384 : anton 1.1 "*Program invoked by the `run-forth' command.")
385 :    
386 :     (defvar forth-band-name nil
387 :     "*Band loaded by the `run-forth' command.")
388 :    
389 :     (defvar forth-program-arguments nil
390 :     "*Arguments passed to the Forth program by the `run-forth' command.")
391 :    
392 :     (defun run-forth (command-line)
393 :     "Run an inferior Forth process. Output goes to the buffer `*forth*'.
394 :     With argument, asks for a command line. Split up screen and run forth
395 :     in the lower portion. The current-buffer when called will stay in the
396 :     upper portion of the screen, and all other windows are deleted.
397 :     Call run-forth again to make the *forth* buffer appear in the lower
398 :     part of the screen."
399 :     (interactive
400 :     (list (let ((default
401 :     (or forth-process-command-line
402 :     (forth-default-command-line))))
403 :     (if current-prefix-arg
404 :     (read-string "Run Forth: " default)
405 :     default))))
406 :     (setq forth-process-command-line command-line)
407 :     (forth-start-process command-line)
408 :     (forth-split)
409 :     (forth-set-runlight forth-runlight:input))
410 :    
411 :     (defun reset-forth ()
412 :     "Reset the Forth process."
413 :     (interactive)
414 :     (let ((process (get-process forth-program-name)))
415 :     (cond ((or (not process)
416 :     (not (eq (process-status process) 'run))
417 :     (yes-or-no-p
418 :     "The Forth process is running, are you SURE you want to reset it? "))
419 :     (message "Resetting Forth process...")
420 :     (forth-reload)
421 :     (message "Resetting Forth process...done")))))
422 :    
423 :     (defun forth-default-command-line ()
424 : pazsan 1.13 (concat forth-program-name
425 : anton 1.1 (if forth-program-arguments
426 :     (concat " " forth-program-arguments)
427 :     "")))
428 :    
429 :     ;;;; Internal Variables
430 :    
431 :     (defvar forth-process-command-line nil
432 :     "Command used to start the most recent Forth process.")
433 :    
434 :     (defvar forth-previous-send ""
435 :     "Most recent expression transmitted to the Forth process.")
436 :    
437 :     (defvar forth-process-filter-queue '()
438 :     "Queue used to synchronize filter actions properly.")
439 :    
440 :     (defvar forth-prompt "ok"
441 :     "The current forth prompt string.")
442 :    
443 :     (defvar forth-start-hook nil
444 :     "If non-nil, a procedure to call when the Forth process is started.
445 :     When called, the current buffer will be the Forth process-buffer.")
446 :    
447 :     (defvar forth-signal-death-message nil
448 :     "If non-nil, causes a message to be generated when the Forth process dies.")
449 :    
450 : anton 1.9 (defvar forth-percent-height 50
451 : anton 1.1 "Tells run-forth how high the upper window should be in percent.")
452 :    
453 :     (defconst forth-runlight:input ?I
454 :     "The character displayed when the Forth process is waiting for input.")
455 :    
456 :     (defvar forth-mode-string ""
457 :     "String displayed in the mode line when the Forth process is running.")
458 :    
459 :     ;;;; Evaluation Commands
460 :    
461 :     (defun forth-send-string (&rest strings)
462 :     "Send the string arguments to the Forth process.
463 :     The strings are concatenated and terminated by a newline."
464 :     (cond ((forth-process-running-p)
465 :     (forth-send-string-1 strings))
466 :     ((yes-or-no-p "The Forth process has died. Reset it? ")
467 :     (reset-forth)
468 :     (goto-char (point-max))
469 :     (forth-send-string-1 strings))))
470 :    
471 :     (defun forth-send-string-1 (strings)
472 :     (let ((string (apply 'concat strings)))
473 :     (forth-send-string-2 string)))
474 :    
475 :     (defun forth-send-string-2 (string)
476 :     (let ((process (get-process forth-program-name)))
477 :     (if (not (eq (current-buffer) (get-buffer forth-program-name)))
478 :     (progn
479 :     (forth-process-filter-output string)
480 :     (forth-process-filter:finish)))
481 :     (send-string process (concat string "\n"))
482 :     (if (eq (current-buffer) (process-buffer process))
483 :     (set-marker (process-mark process) (point)))))
484 :    
485 :    
486 :     (defun forth-send-region (start end)
487 :     "Send the current region to the Forth process.
488 :     The region is sent terminated by a newline."
489 :     (interactive "r")
490 :     (let ((process (get-process forth-program-name)))
491 :     (if (and process (eq (current-buffer) (process-buffer process)))
492 :     (progn (goto-char end)
493 :     (set-marker (process-mark process) end))))
494 :     (forth-send-string "\n" (buffer-substring start end) "\n"))
495 :    
496 :     (defun forth-end-of-paragraph ()
497 :     (if (looking-at "[\t\n ]+") (skip-chars-backward "\t\n "))
498 :     (if (not (re-search-forward "\n[ \t]*\n" nil t))
499 :     (goto-char (point-max))))
500 :    
501 :     (defun forth-send-paragraph ()
502 :     "Send the current or the previous paragraph to the Forth process"
503 :     (interactive)
504 :     (let (end)
505 :     (save-excursion
506 :     (forth-end-of-paragraph)
507 :     (skip-chars-backward "\t\n ")
508 :     (setq end (point))
509 :     (if (re-search-backward "\n[ \t]*\n" nil t)
510 :     (setq start (point))
511 :     (goto-char (point-min)))
512 :     (skip-chars-forward "\t\n ")
513 :     (forth-send-region (point) end))))
514 :    
515 :     (defun forth-send-buffer ()
516 :     "Send the current buffer to the Forth process."
517 :     (interactive)
518 :     (if (eq (current-buffer) (forth-process-buffer))
519 :     (error "Not allowed to send this buffer's contents to Forth"))
520 :     (forth-send-region (point-min) (point-max)))
521 :    
522 :    
523 :     ;;;; Basic Process Control
524 :    
525 :     (defun forth-start-process (command-line)
526 :     (let ((buffer (get-buffer-create "*forth*")))
527 :     (let ((process (get-buffer-process buffer)))
528 :     (save-excursion
529 :     (set-buffer buffer)
530 :     (progn (if process (delete-process process))
531 :     (goto-char (point-max))
532 :     (setq mode-line-process '(": %s"))
533 :     (add-to-global-mode-string 'forth-mode-string)
534 :     (setq process
535 :     (apply 'start-process
536 :     (cons forth-program-name
537 :     (cons buffer
538 :     (forth-parse-command-line
539 :     command-line)))))
540 :     (set-marker (process-mark process) (point-max))
541 :     (forth-process-filter-initialize t)
542 :     (forth-modeline-initialize)
543 :     (set-process-sentinel process 'forth-process-sentinel)
544 :     (set-process-filter process 'forth-process-filter)
545 :     (run-hooks 'forth-start-hook)))
546 :     buffer)))
547 :    
548 :     (defun forth-parse-command-line (string)
549 :     (setq string (substitute-in-file-name string))
550 :     (let ((start 0)
551 :     (result '()))
552 :     (while start
553 :     (let ((index (string-match "[ \t]" string start)))
554 :     (setq start
555 :     (cond ((not index)
556 :     (setq result
557 :     (cons (substring string start)
558 :     result))
559 :     nil)
560 :     ((= index start)
561 :     (string-match "[^ \t]" string start))
562 :     (t
563 :     (setq result
564 :     (cons (substring string start index)
565 :     result))
566 :     (1+ index))))))
567 :     (nreverse result)))
568 :    
569 :    
570 :     (defun forth-process-running-p ()
571 :     "True iff there is a Forth process whose status is `run'."
572 :     (let ((process (get-process forth-program-name)))
573 :     (and process
574 :     (eq (process-status process) 'run))))
575 :    
576 :     (defun forth-process-buffer ()
577 :     (let ((process (get-process forth-program-name)))
578 :     (and process (process-buffer process))))
579 :    
580 :     ;;;; Process Filter
581 :    
582 :     (defun forth-process-sentinel (proc reason)
583 :     (let ((inhibit-quit nil))
584 :     (forth-process-filter-initialize (eq reason 'run))
585 :     (if (eq reason 'run)
586 :     (forth-modeline-initialize)
587 :     (setq forth-mode-string "")))
588 :     (if (and (not (memq reason '(run stop)))
589 :     forth-signal-death-message)
590 :     (progn (beep)
591 :     (message
592 :     "The Forth process has died! Do M-x reset-forth to restart it"))))
593 :    
594 :     (defun forth-process-filter-initialize (running-p)
595 :     (setq forth-process-filter-queue (cons '() '()))
596 :     (setq forth-prompt "ok"))
597 :    
598 :    
599 :     (defun forth-process-filter (proc string)
600 :     (forth-process-filter-output string)
601 :     (forth-process-filter:finish))
602 :    
603 :     (defun forth-process-filter:enqueue (action)
604 :     (let ((next (cons action '())))
605 :     (if (cdr forth-process-filter-queue)
606 :     (setcdr (cdr forth-process-filter-queue) next)
607 :     (setcar forth-process-filter-queue next))
608 :     (setcdr forth-process-filter-queue next)))
609 :    
610 :     (defun forth-process-filter:finish ()
611 :     (while (car forth-process-filter-queue)
612 :     (let ((next (car forth-process-filter-queue)))
613 :     (setcar forth-process-filter-queue (cdr next))
614 :     (if (not (cdr next))
615 :     (setcdr forth-process-filter-queue '()))
616 :     (apply (car (car next)) (cdr (car next))))))
617 :    
618 :     ;;;; Process Filter Output
619 :    
620 :     (defun forth-process-filter-output (&rest args)
621 :     (if (not (and args
622 :     (null (cdr args))
623 :     (stringp (car args))
624 :     (string-equal "" (car args))))
625 :     (forth-process-filter:enqueue
626 :     (cons 'forth-process-filter-output-1 args))))
627 :    
628 :     (defun forth-process-filter-output-1 (&rest args)
629 :     (save-excursion
630 :     (forth-goto-output-point)
631 :     (apply 'insert-before-markers args)))
632 :    
633 :     (defun forth-guarantee-newlines (n)
634 :     (save-excursion
635 :     (forth-goto-output-point)
636 :     (let ((stop nil))
637 :     (while (and (not stop)
638 :     (bolp))
639 :     (setq n (1- n))
640 :     (if (bobp)
641 :     (setq stop t)
642 :     (backward-char))))
643 :     (forth-goto-output-point)
644 :     (while (> n 0)
645 :     (insert-before-markers ?\n)
646 :     (setq n (1- n)))))
647 :    
648 :     (defun forth-goto-output-point ()
649 :     (let ((process (get-process forth-program-name)))
650 :     (set-buffer (process-buffer process))
651 :     (goto-char (process-mark process))))
652 :    
653 :     (defun forth-modeline-initialize ()
654 :     (setq forth-mode-string " "))
655 :    
656 :     (defun forth-set-runlight (runlight)
657 :     (aset forth-mode-string 0 runlight)
658 :     (forth-modeline-redisplay))
659 :    
660 :     (defun forth-modeline-redisplay ()
661 :     (save-excursion (set-buffer (other-buffer)))
662 :     (set-buffer-modified-p (buffer-modified-p))
663 :     (sit-for 0))
664 :    
665 :     ;;;; Process Filter Operations
666 :    
667 :     (defun add-to-global-mode-string (x)
668 :     (cond ((null global-mode-string)
669 :     (setq global-mode-string (list "" x " ")))
670 :     ((not (memq x global-mode-string))
671 :     (setq global-mode-string
672 :     (cons ""
673 :     (cons x
674 :     (cons " "
675 :     (if (equal "" (car global-mode-string))
676 :     (cdr global-mode-string)
677 :     global-mode-string))))))))
678 :    
679 :    
680 :     ;; Misc
681 :    
682 :     (setq auto-mode-alist (append auto-mode-alist
683 : pazsan 1.4 '(("\\.fs$" . forth-mode))))
684 : anton 1.1
685 :     (defun forth-split ()
686 :     (interactive)
687 :     (forth-split-1 "*forth*"))
688 :    
689 :     (defun forth-split-1 (buffer)
690 :     (if (not (eq (window-buffer) (get-buffer buffer)))
691 :     (progn
692 :     (delete-other-windows)
693 :     (split-window-vertically
694 :     (/ (* (screen-height) forth-percent-height) 100))
695 :     (other-window 1)
696 :     (switch-to-buffer buffer)
697 :     (goto-char (point-max))
698 :     (other-window 1))))
699 :    
700 :     (defun forth-reload ()
701 :     (interactive)
702 :     (let ((process (get-process forth-program-name)))
703 :     (if process (kill-process process t)))
704 :     (sleep-for-millisecs 100)
705 :     (forth-mode))
706 :    
707 :    
708 :     ;; Special section for forth-help
709 :    
710 :     (defvar forth-help-buffer "*Forth-help*"
711 :     "Buffer used to display the requested documentation.")
712 :    
713 :     (defvar forth-help-load-path nil
714 :     "List of directories to search through to find *.doc
715 :     (forth-help-file-suffix) files. Nil means current default directory.
716 :     The specified directories must contain at least one .doc file. If it
717 :     does not and you still want the load-path to scan that directory, create
718 :     an empty file dummy.doc.")
719 :    
720 :     (defvar forth-help-file-suffix "*.doc"
721 :     "The file names to search for in each directory.")
722 :    
723 :     (setq forth-search-command-prefix "grep -n \"^ [^(]* ")
724 :     (defvar forth-search-command-suffix "/dev/null")
725 :     (defvar forth-grep-error-regexp ": No such file or directory")
726 :    
727 :     (defun forth-function-called-at-point ()
728 :     "Return the space delimited word a point."
729 :     (save-excursion
730 :     (save-restriction
731 :     (narrow-to-region (max (point-min) (- (point) 1000)) (point-max))
732 :     (skip-chars-backward "^ \t\n" (point-min))
733 :     (if (looking-at "[ \t\n]")
734 :     (forward-char 1))
735 :     (let (obj (p (point)))
736 :     (skip-chars-forward "^ \t\n")
737 :     (buffer-substring p (point))))))
738 :    
739 :     (defun forth-help-names-extend-comp (path-list result)
740 :     (cond ((null path-list) result)
741 :     ((null (car path-list))
742 :     (forth-help-names-extend-comp (cdr path-list)
743 :     (concat result forth-help-file-suffix " ")))
744 :     (t (forth-help-names-extend-comp
745 :     (cdr path-list) (concat result
746 :     (expand-file-name (car path-list)) "/"
747 :     forth-help-file-suffix " ")))))
748 :    
749 :     (defun forth-help-names-extended ()
750 :     (if forth-help-load-path
751 :     (forth-help-names-extend-comp forth-help-load-path "")
752 :     (error "forth-help-load-path not specified")))
753 :    
754 :    
755 : anton 1.7 ;(define-key forth-mode-map "\C-hf" 'forth-documentation)
756 : anton 1.1
757 :     (defun forth-documentation (function)
758 :     "Display the full documentation of FORTH word."
759 :     (interactive
760 :     (let ((fn (forth-function-called-at-point))
761 :     (enable-recursive-minibuffers t)
762 :     search-list
763 :     val)
764 :     (setq val (read-string (format "Describe forth word (default %s): " fn)))
765 :     (list (if (equal val "") fn val))))
766 :     (forth-get-doc (concat forth-search-command-prefix
767 :     (grep-regexp-quote (concat function " ("))
768 :     "[^)]*\-\-\" " (forth-help-names-extended)
769 :     forth-search-command-suffix))
770 :     (message "C-x C-m switches back to the forth interaction window"))
771 :    
772 :     (defun forth-get-doc (command)
773 :     "Display the full documentation of command."
774 :     (let ((curwin (get-buffer-window (window-buffer)))
775 :     reswin
776 :     pointmax)
777 :     (with-output-to-temp-buffer forth-help-buffer
778 :     (progn
779 :     (call-process "sh" nil forth-help-buffer t "-c" command)
780 :     (setq reswin (get-buffer-window forth-help-buffer))))
781 :     (setq reswin (get-buffer-window forth-help-buffer))
782 :     (select-window reswin)
783 :     (save-excursion
784 :     (goto-char (setq pointmax (point-max)))
785 :     (insert "--------------------\n\n"))
786 :     (let (fd doc)
787 :     (while (setq fd (forth-get-file-data pointmax))
788 :     (setq doc (forth-get-doc-string fd))
789 :     (save-excursion
790 :     (goto-char (point-max))
791 :     (insert (substring (car fd) (string-match "[^/]*$" (car fd)))
792 :     ":\n\n" doc "\n")))
793 :     (if (not doc)
794 :     (progn (goto-char (point-max)) (insert "Not found"))))
795 :     (select-window curwin)))
796 :    
797 :     (defun forth-skip-error-lines ()
798 :     (let ((lines 0))
799 :     (save-excursion
800 :     (while (re-search-forward forth-grep-error-regexp nil t)
801 :     (beginning-of-line)
802 :     (forward-line 1)
803 :     (setq lines (1+ lines))))
804 :     (forward-line lines)))
805 :    
806 :     (defun forth-get-doc-string (fd)
807 :     "Find file (car fd) and extract documentation from line (nth 1 fd)."
808 :     (let (result)
809 :     (save-window-excursion
810 :     (find-file (car fd))
811 :     (goto-line (nth 1 fd))
812 :     (if (not (eq (nth 1 fd) (1+ (count-lines (point-min) (point)))))
813 :     (error "forth-get-doc-string: serious error"))
814 :     (if (not (re-search-backward "\n[\t ]*\n" nil t))
815 :     (goto-char (point-min))
816 :     (goto-char (match-end 0)))
817 :     (let ((p (point)))
818 :     (if (not (re-search-forward "\n[\t ]*\n" nil t))
819 :     (goto-char (point-max)))
820 :     (setq result (buffer-substring p (point))))
821 :     (bury-buffer (current-buffer)))
822 :     result))
823 :    
824 :     (defun forth-get-file-data (limit)
825 :     "Parse grep output and return '(filename line#) list. Return nil when
826 :     passing limit."
827 :     (forth-skip-error-lines)
828 :     (if (< (point) limit)
829 :     (let ((result (forth-get-file-data-cont limit)))
830 :     (forward-line 1)
831 :     (beginning-of-line)
832 :     result)))
833 :    
834 :     (defun forth-get-file-data-cont (limit)
835 :     (let (result)
836 :     (let ((p (point)))
837 :     (skip-chars-forward "^:")
838 :     (setq result (buffer-substring p (point))))
839 :     (if (< (point) limit)
840 :     (let ((p (1+ (point))))
841 :     (forward-char 1)
842 :     (skip-chars-forward "^:")
843 :     (list result (string-to-int (buffer-substring p (point))))))))
844 :    
845 :     (defun grep-regexp-quote (str)
846 :     (let ((i 0) (m 1) (res ""))
847 :     (while (/= m 0)
848 :     (setq m (string-to-char (substring str i)))
849 :     (if (/= m 0)
850 :     (progn
851 :     (setq i (1+ i))
852 :     (if (string-match (regexp-quote (char-to-string m))
853 :     ".*\\^$[]")
854 :     (setq res (concat res "\\")))
855 :     (setq res (concat res (char-to-string m))))))
856 :     res))
857 :    
858 :    
859 : anton 1.9 (define-key forth-mode-map "\C-x\C-e" 'compile)
860 : anton 1.1 (define-key forth-mode-map "\C-x\C-n" 'next-error)
861 :     (require 'compile "compile")
862 :    
863 : anton 1.6 (defvar forth-compile-command "gforth ")
864 : anton 1.9 ;(defvar forth-compilation-window-percent-height 30)
865 : anton 1.1
866 :     (defun forth-compile (command)
867 :     (interactive (list (setq forth-compile-command (read-string "Compile command: " forth-compile-command))))
868 :     (forth-split-1 "*compilation*")
869 :     (setq ctools-compile-command command)
870 :     (compile1 ctools-compile-command "No more errors"))
871 :    
872 :    
873 : pazsan 1.12 ;;; Forth menu
874 :     ;;; Mikael Karlsson <qramika@eras70.ericsson.se>
875 :    
876 :     (cond ((string-match "XEmacs\\|Lucid" emacs-version)
877 :     (require 'func-menu)
878 :    
879 :     (defconst fume-function-name-regexp-forth
880 :     "^\\(:\\)[ \t]+\\([^ \t]*\\)"
881 :     "Expression to get word definitions in Forth.")
882 :    
883 :     (setq fume-function-name-regexp-alist
884 :     (append '((forth-mode . fume-function-name-regexp-forth)
885 :     ) fume-function-name-regexp-alist))
886 :    
887 :     ;; Find next forth word in the buffer
888 :     (defun fume-find-next-forth-function-name (buffer)
889 :     "Searches for the next forth word in BUFFER."
890 :     (set-buffer buffer)
891 :     (if (re-search-forward fume-function-name-regexp nil t)
892 :     (let ((beg (match-beginning 2))
893 :     (end (match-end 2)))
894 :     (cons (buffer-substring beg end) beg))))
895 :    
896 :     (setq fume-find-function-name-method-alist
897 :     (append '((forth-mode . fume-find-next-forth-function-name))))
898 :    
899 :     ))
900 :     ;;; End Forth menu
901 :    
902 :     ;;; File folding of forth-files
903 :     ;;; uses outline
904 :     ;;; Toggle activation with M-x fold-f (when editing a forth-file)
905 :     ;;; Use f9 to expand, f10 to hide, Or the menubar in xemacs
906 :     ;;;
907 :     ;;; Works most of the times but loses sync with the cursor occasionally
908 :     ;;; Could be improved by also folding on comments
909 :    
910 :     (require 'outline)
911 :    
912 :     ;;(define-key outline-minor-mode-map 'f9 'show-entry)
913 :     ;;(define-key outline-minor-mode-map 'f10 'hide-entry)
914 :    
915 :     (defun fold-f ()
916 :     (interactive)
917 :     (add-hook 'outline-minor-mode-hook 'hide-body)
918 :    
919 :     ; outline mode header start, i.e. find word definitions
920 :     (setq outline-regexp "^\\(:\\)[ \t]+\\([^ \t]*\\)")
921 :    
922 :     (outline-minor-mode)
923 :     )
924 :     ;;; end file folding
925 :    
926 :     ;;; func-menu is a package that scans your source file for function definitions
927 :     ;;; and makes a menubar entry that lets you jump to any particular function
928 :     ;;; definition by selecting it from the menu. The following code turns this on
929 :     ;;; for all of the recognized languages. Scanning the buffer takes some time,
930 :     ;;; but not much.
931 :     ;;;
932 :     (cond ((string-match "XEmacs\\|Lucid" emacs-version)
933 :     (require 'func-menu)
934 :     ;; (define-key global-map 'f8 'function-menu)
935 :     (add-hook 'find-fible-hooks 'fume-add-menubar-entry)
936 :     (define-key global-map "\C-cg" 'fume-prompt-function-goto)
937 :     (define-key global-map '(shift button3) 'mouse-function-menu)
938 :     ))

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