[gforth] / gforth / gforth.el  

gforth: gforth/gforth.el


1 : anton 1.17 ;; Forth mode for Emacs
2 :     ;; This file is part of GForth.
3 : anton 1.1 ;; Changes by anton
4 : anton 1.6 ;; This is a variant of forth.el that came with TILE.
5 : anton 1.5 ;; I left most of this stuff untouched and made just a few changes for
6 : anton 1.6 ;; the things I use (mainly indentation and syntax tables).
7 :     ;; So there is still a lot of work to do to adapt this to gforth.
8 : anton 1.1
9 : anton 1.17 ;; GForth is distributed in the hope that it will be useful,
10 : anton 1.1 ;; but WITHOUT ANY WARRANTY. No author or distributor
11 :     ;; accepts responsibility to anyone for the consequences of using it
12 :     ;; or for whether it serves any particular purpose or works at all,
13 :     ;; unless he says so in writing. Refer to the GNU Emacs General Public
14 :     ;; License for full details.
15 :    
16 :     ;; Everyone is granted permission to copy, modify and redistribute
17 :     ;; GNU Emacs, but only under the conditions described in the
18 :     ;; GNU Emacs General Public License. A copy of this license is
19 : anton 1.17 ;; supposed to have been given to you along with Gforth so you
20 : anton 1.1 ;; can know your rights and responsibilities. It should be in a
21 :     ;; file named COPYING. Among other things, the copyright notice
22 :     ;; and this notice must be preserved on all copies.
23 :    
24 :     ;;-------------------------------------------------------------------
25 :     ;; A Forth indentation, documentation search and interaction library
26 :     ;;-------------------------------------------------------------------
27 :     ;;
28 :     ;; Written by Goran Rydqvist, gorry@ida.liu.se, Summer 1988
29 :     ;; Started: 16 July 88
30 :     ;; Version: 2.10
31 :     ;; Last update: 5 December 1989 by Mikael Patel, mip@ida.liu.se
32 :     ;; Last update: 25 June 1990 by Goran Rydqvist, gorry@ida.liu.se
33 :     ;;
34 :     ;; Documentation: See forth-mode (^HF forth-mode)
35 :     ;;-------------------------------------------------------------------
36 :    
37 :    
38 :     (defvar forth-positives
39 : anton 1.19 " : :noname code interpretation: ;code does> begin do ?do +do -do u+do u-do while if ?dup-if ?dup-0=-if else case struct [if] [else] "
40 : anton 1.1 "Contains all words which will cause the indent-level to be incremented
41 :     on the next line.
42 :     OBS! All words in forth-positives must be surrounded by spaces.")
43 :    
44 :     (defvar forth-negatives
45 : anton 1.18 " ; end-code ;code does> until repeat while +loop loop -loop s+loop else then endif again endcase end-struct [then] [else] [endif] "
46 : anton 1.1 "Contains all words which will cause the indent-level to be decremented
47 :     on the current line.
48 :     OBS! All words in forth-negatives must be surrounded by spaces.")
49 :    
50 :     (defvar forth-zeroes
51 : anton 1.19 " : :noname code interpretation: "
52 : anton 1.1 "Contains all words which causes the indent to go to zero")
53 :    
54 : anton 1.6 (defvar forth-prefixes
55 :     " postpone [compile] ['] [char] "
56 :     "words that prefix and escape other words")
57 :    
58 : anton 1.1 (defvar forth-mode-abbrev-table nil
59 :     "Abbrev table in use in Forth-mode buffers.")
60 :    
61 :     (define-abbrev-table 'forth-mode-abbrev-table ())
62 :    
63 :     (defvar forth-mode-map nil
64 :     "Keymap used in Forth mode.")
65 :    
66 :     (if (not forth-mode-map)
67 :     (setq forth-mode-map (make-sparse-keymap)))
68 :    
69 :     (global-set-key "\e\C-m" 'forth-send-paragraph)
70 :     (global-set-key "\C-x\C-m" 'forth-split)
71 :     (global-set-key "\e " 'forth-reload)
72 :    
73 : anton 1.9 ;(define-key forth-mode-map "\M-\C-x" 'compile)
74 : anton 1.7 (define-key forth-mode-map "\C-x\\" 'comment-region)
75 :     (define-key forth-mode-map "\C-x~" 'forth-remove-tracers)
76 : anton 1.1 (define-key forth-mode-map "\e\C-m" 'forth-send-paragraph)
77 :     (define-key forth-mode-map "\eo" 'forth-send-buffer)
78 :     (define-key forth-mode-map "\C-x\C-m" 'forth-split)
79 :     (define-key forth-mode-map "\e " 'forth-reload)
80 :     (define-key forth-mode-map "\t" 'forth-indent-command)
81 :     (define-key forth-mode-map "\C-m" 'reindent-then-newline-and-indent)
82 : anton 1.7 (define-key forth-mode-map "\M-q" 'forth-fill-paragraph)
83 : pazsan 1.13 (define-key forth-mode-map "\e." 'forth-find-tag)
84 : anton 1.1
85 : pazsan 1.13 (load "etags.el")
86 :    
87 :     (defun forth-find-tag (tagname &optional next-p regexp-p)
88 :     (interactive (find-tag-interactive "Find tag: "))
89 :     (switch-to-buffer
90 :     (find-tag-noselect (concat " " tagname " ") next-p regexp-p)))
91 :    
92 : anton 1.1 (defvar forth-mode-syntax-table nil
93 :     "Syntax table in use in Forth-mode buffers.")
94 :    
95 :     (if (not forth-mode-syntax-table)
96 :     (progn
97 :     (setq forth-mode-syntax-table (make-syntax-table))
98 : anton 1.6 (let ((char 0))
99 :     (while (< char ?!)
100 :     (modify-syntax-entry char " " forth-mode-syntax-table)
101 :     (setq char (1+ char)))
102 :     (while (< char 256)
103 :     (modify-syntax-entry char "w" forth-mode-syntax-table)
104 :     (setq char (1+ char))))
105 :     (modify-syntax-entry ?\" "\"" forth-mode-syntax-table)
106 :     (modify-syntax-entry ?\\ "<" forth-mode-syntax-table)
107 :     (modify-syntax-entry ?\n ">" forth-mode-syntax-table)
108 :     ))
109 :     ;I do not define '(' and ')' as comment delimiters, because emacs
110 :     ;only supports one comment syntax (and a hack to accomodate C++); I
111 :     ;use '\' for natural language comments and '(' for formal comments
112 :     ;like stack comments, so for me it's better to have emacs treat '\'
113 : pazsan 1.13 ;comments as comments. If you want it different, make the appropriate
114 : anton 1.6 ;changes (best in your .emacs file).
115 :     ;
116 :     ;Hmm, the C++ hack could be used to support both comment syntaxes: we
117 :     ;can have different comment styles, if both comments start with the
118 :     ;same character. we could use ' ' as first and '(' and '\' as second
119 :     ;character. However this would fail for G\ comments.
120 : anton 1.1
121 :     (defconst forth-indent-level 4
122 :     "Indentation of Forth statements.")
123 :    
124 :     (defun forth-mode-variables ()
125 :     (set-syntax-table forth-mode-syntax-table)
126 :     (setq local-abbrev-table forth-mode-abbrev-table)
127 :     (make-local-variable 'paragraph-start)
128 :     (setq paragraph-start (concat "^$\\|" page-delimiter))
129 :     (make-local-variable 'paragraph-separate)
130 :     (setq paragraph-separate paragraph-start)
131 :     (make-local-variable 'indent-line-function)
132 :     (setq indent-line-function 'forth-indent-line)
133 : anton 1.6 ; (make-local-variable 'require-final-newline)
134 :     ; (setq require-final-newline t)
135 : anton 1.1 (make-local-variable 'comment-start)
136 : anton 1.3 (setq comment-start "\\ ")
137 :     ;(make-local-variable 'comment-end)
138 :     ;(setq comment-end " )")
139 : anton 1.1 (make-local-variable 'comment-column)
140 :     (setq comment-column 40)
141 :     (make-local-variable 'comment-start-skip)
142 : anton 1.3 (setq comment-start-skip "\\ ")
143 : anton 1.1 (make-local-variable 'comment-indent-hook)
144 :     (setq comment-indent-hook 'forth-comment-indent)
145 :     (make-local-variable 'parse-sexp-ignore-comments)
146 :     (setq parse-sexp-ignore-comments t))
147 :    
148 : anton 1.2 ;;;###autoload
149 : anton 1.1 (defun forth-mode ()
150 :     "
151 :     Major mode for editing Forth code. Tab indents for Forth code. Comments
152 : anton 1.9 are delimited with \\ and newline. Paragraphs are separated by blank lines
153 :     only. Delete converts tabs to spaces as it moves back.
154 : anton 1.1 \\{forth-mode-map}
155 :     Forth-split
156 :     Positions the current buffer on top and a forth-interaction window
157 :     below. The window size is controlled by the forth-percent-height
158 :     variable (see below).
159 :     Forth-reload
160 :     Reloads the forth library and restarts the forth process.
161 :     Forth-send-buffer
162 :     Sends the current buffer, in text representation, as input to the
163 :     forth process.
164 :     Forth-send-paragraph
165 :     Sends the previous or the current paragraph to the forth-process.
166 :     Note that the cursor only need to be with in the paragraph to be sent.
167 :     forth-documentation
168 :     Search for documentation of forward adjacent to cursor. Note! To use
169 :     this mode you have to add a line, to your .emacs file, defining the
170 :     directories to search through for documentation files (se variable
171 :     forth-help-load-path below) e.g. (setq forth-help-load-path '(nil)).
172 :    
173 :     Variables controlling interaction and startup
174 :     forth-percent-height
175 :     Tells split how high to make the edit portion, in percent of the
176 :     current screen height.
177 :     forth-program-name
178 :     Tells the library which program name to execute in the interation
179 :     window.
180 :    
181 :     Variables controlling indentation style:
182 :     forth-positives
183 :     A string containing all words which causes the indent-level of the
184 :     following line to be incremented.
185 :     OBS! Each word must be surronded by spaces.
186 :     forth-negatives
187 :     A string containing all words which causes the indentation of the
188 :     current line to be decremented, if the word begin the line. These
189 :     words also has a cancelling effect on the indent-level of the
190 :     following line, independent of position.
191 :     OBS! Each word must be surronded by spaces.
192 :     forth-zeroes
193 :     A string containing all words which causes the indentation of the
194 :     current line to go to zero, if the word begin the line.
195 :     OBS! Each word must be surronded by spaces.
196 :     forth-indent-level
197 :     Indentation increment/decrement of Forth statements.
198 :    
199 :     Note! A word which decrements the indentation of the current line, may
200 :     also be mentioned in forth-positives to cause the indentation to
201 :     resume the previous level.
202 :    
203 :     Variables controling documentation search
204 :     forth-help-load-path
205 :     List of directories to search through to find *.doc
206 :     (forth-help-file-suffix) files. Nil means current default directory.
207 :     The specified directories must contain at least one .doc file. If it
208 :     does not and you still want the load-path to scan that directory, create
209 :     an empty file dummy.doc.
210 :     forth-help-file-suffix
211 :     The file names to search for in each directory specified by
212 :     forth-help-load-path. Defaulted to '*.doc'.
213 :     "
214 :     (interactive)
215 :     (kill-all-local-variables)
216 :     (use-local-map forth-mode-map)
217 :     (setq mode-name "Forth")
218 :     (setq major-mode 'forth-mode)
219 :     (forth-mode-variables)
220 :     ; (if (not (forth-process-running-p))
221 :     ; (run-forth forth-program-name))
222 :     (run-hooks 'forth-mode-hook))
223 :    
224 : anton 1.6 (setq forth-mode-hook
225 : anton 1.9 '(lambda ()
226 :     (make-local-variable 'compile-command)
227 :     (setq compile-command "gforth ")))
228 : anton 1.6
229 : anton 1.7 (defun forth-fill-paragraph ()
230 :     "Fill comments (starting with '\'; do not fill code (block style
231 :     programmers who tend to fill code won't use emacs anyway:-)."
232 : anton 1.9 ; Currently only comments at the start of the line are filled.
233 :     ; Something like lisp-fill-paragraph may be better. We cannot use
234 :     ; fill-paragraph, because it removes the \ from the first comment
235 :     ; line. Therefore we have to look for the first line of the comment
236 :     ; and use fill-region.
237 : anton 1.7 (interactive)
238 :     (save-excursion
239 :     (beginning-of-line)
240 : anton 1.9 (while (and
241 :     (= (forward-line -1) 0)
242 : anton 1.14 (looking-at "[ \t]*\\\\g?[ \t]+")))
243 :     (if (not (looking-at "[ \t]*\\\\g?[ \t]+"))
244 : anton 1.9 (forward-line 1))
245 :     (let ((from (point))
246 :     (to (save-excursion (forward-paragraph) (point))))
247 : anton 1.14 (if (looking-at "[ \t]*\\\\g?[ \t]+")
248 : anton 1.9 (progn (goto-char (match-end 0))
249 :     (set-fill-prefix)
250 :     (fill-region from to nil))))))
251 : anton 1.7
252 : anton 1.1 (defun forth-comment-indent ()
253 :     (save-excursion
254 :     (beginning-of-line)
255 :     (if (looking-at ":[ \t]*")
256 :     (progn
257 :     (end-of-line)
258 :     (skip-chars-backward " \t\n")
259 :     (1+ (current-column)))
260 :     comment-column)))
261 :    
262 :     (defun forth-current-indentation ()
263 :     (save-excursion
264 :     (beginning-of-line)
265 :     (back-to-indentation)
266 :     (current-column)))
267 :    
268 :     (defun forth-delete-indentation ()
269 :     (let ((b nil) (m nil))
270 :     (save-excursion
271 :     (beginning-of-line)
272 :     (setq b (point))
273 :     (back-to-indentation)
274 :     (setq m (point)))
275 :     (delete-region b m)))
276 :    
277 :     (defun forth-indent-line (&optional flag)
278 :     "Correct indentation of the current Forth line."
279 :     (let ((x (forth-calculate-indent)))
280 :     (forth-indent-to x)))
281 :    
282 :     (defun forth-indent-command ()
283 :     (interactive)
284 :     (forth-indent-line t))
285 :    
286 :     (defun forth-indent-to (x)
287 :     (let ((p nil))
288 :     (setq p (- (current-column) (forth-current-indentation)))
289 :     (forth-delete-indentation)
290 :     (beginning-of-line)
291 :     (indent-to x)
292 :     (if (> p 0) (forward-char p))))
293 :    
294 :     ;;Calculate indent
295 :     (defun forth-calculate-indent ()
296 :     (let ((w1 nil) (indent 0) (centre 0))
297 :     (save-excursion
298 :     (beginning-of-line)
299 :     (skip-chars-backward " \t\n")
300 :     (beginning-of-line)
301 :     (back-to-indentation)
302 :     (setq indent (current-column))
303 :     (setq centre indent)
304 :     (setq indent (+ indent (forth-sum-line-indentation))))
305 :     (save-excursion
306 :     (beginning-of-line)
307 :     (back-to-indentation)
308 :     (let ((p (point)))
309 :     (skip-chars-forward "^ \t\n")
310 :     (setq w1 (buffer-substring p (point)))))
311 :     (if (> (- indent centre) forth-indent-level)
312 :     (setq indent (+ centre forth-indent-level)))
313 :     (if (> (- centre indent) forth-indent-level)
314 :     (setq indent (- centre forth-indent-level)))
315 :     (if (< indent 0) (setq indent 0))
316 :     (setq indent (- indent
317 :     (if (string-match
318 :     (regexp-quote (concat " " w1 " "))
319 :     forth-negatives)
320 :     forth-indent-level 0)))
321 :     (if (string-match (regexp-quote (concat " " w1 " ")) forth-zeroes)
322 :     (setq indent 0))
323 :     indent))
324 :    
325 :     (defun forth-sum-line-indentation ()
326 :     "Add upp the positive and negative weights of all words on the current line."
327 :     (let ((b (point)) (e nil) (sum 0) (w nil) (t1 nil) (t2 nil) (first t))
328 :     (end-of-line) (setq e (point))
329 :     (goto-char b)
330 :     (while (< (point) e)
331 :     (setq w (forth-next-word))
332 :     (setq t1 (string-match (regexp-quote (concat " " w " "))
333 :     forth-positives))
334 :     (setq t2 (string-match (regexp-quote (concat " " w " "))
335 :     forth-negatives))
336 :     (if t1
337 :     (setq sum (+ sum forth-indent-level)))
338 :     (if (and t2 (not first))
339 :     (setq sum (- sum forth-indent-level)))
340 :     (skip-chars-forward " \t")
341 :     (setq first nil))
342 :     sum))
343 :    
344 :    
345 :     (defun forth-next-word ()
346 : anton 1.6 "Return the next forth-word. Skip anything that the forth-word takes from
347 :     the input stream (comments, arguments, etc.)"
348 :     ;actually, it would be better to use commands based on the
349 :     ;syntax-table or comment-start etc.
350 : anton 1.1 (let ((w1 nil))
351 :     (while (not w1)
352 :     (skip-chars-forward " \t\n")
353 :     (let ((p (point)))
354 :     (skip-chars-forward "^ \t\n")
355 :     (setq w1 (buffer-substring p (point))))
356 :     (cond ((string-match "\"" w1)
357 :     (progn
358 : anton 1.6 (skip-chars-forward "^\"\n")
359 :     (forward-char)))
360 :     ((string-match "\\\\" w1)
361 :     (progn
362 :     (end-of-line)
363 :     ))
364 :     ((or (equal "(" w1) (equal ".(" w1))
365 : anton 1.1 (progn
366 : anton 1.6 (skip-chars-forward "^)\n")
367 :     (forward-char)))
368 :     ((string-match (regexp-quote (concat " " w1 " ")) forth-prefixes)
369 :     (progn (skip-chars-forward " \t\n")
370 :     (skip-chars-forward "^ \t\n")))
371 : anton 1.1 (t nil)))
372 :     w1))
373 :    
374 :    
375 :     ;; Forth commands
376 :    
377 : anton 1.7 (defun forth-remove-tracers ()
378 :     "Remove tracers of the form `~~ '. Queries the user for each occurrence."
379 :     (interactive)
380 : anton 1.16 (query-replace-regexp "\\(~~ \\| ~~$\\)" "" nil))
381 : anton 1.7
382 : anton 1.5 (defvar forth-program-name "gforth"
383 : anton 1.1 "*Program invoked by the `run-forth' command.")
384 :    
385 :     (defvar forth-band-name nil
386 :     "*Band loaded by the `run-forth' command.")
387 :    
388 :     (defvar forth-program-arguments nil
389 :     "*Arguments passed to the Forth program by the `run-forth' command.")
390 :    
391 :     (defun run-forth (command-line)
392 :     "Run an inferior Forth process. Output goes to the buffer `*forth*'.
393 :     With argument, asks for a command line. Split up screen and run forth
394 :     in the lower portion. The current-buffer when called will stay in the
395 :     upper portion of the screen, and all other windows are deleted.
396 :     Call run-forth again to make the *forth* buffer appear in the lower
397 :     part of the screen."
398 :     (interactive
399 :     (list (let ((default
400 :     (or forth-process-command-line
401 :     (forth-default-command-line))))
402 :     (if current-prefix-arg
403 :     (read-string "Run Forth: " default)
404 :     default))))
405 :     (setq forth-process-command-line command-line)
406 :     (forth-start-process command-line)
407 :     (forth-split)
408 :     (forth-set-runlight forth-runlight:input))
409 :    
410 :     (defun reset-forth ()
411 :     "Reset the Forth process."
412 :     (interactive)
413 :     (let ((process (get-process forth-program-name)))
414 :     (cond ((or (not process)
415 :     (not (eq (process-status process) 'run))
416 :     (yes-or-no-p
417 :     "The Forth process is running, are you SURE you want to reset it? "))
418 :     (message "Resetting Forth process...")
419 :     (forth-reload)
420 :     (message "Resetting Forth process...done")))))
421 :    
422 :     (defun forth-default-command-line ()
423 : pazsan 1.13 (concat forth-program-name
424 : anton 1.1 (if forth-program-arguments
425 :     (concat " " forth-program-arguments)
426 :     "")))
427 :    
428 :     ;;;; Internal Variables
429 :    
430 :     (defvar forth-process-command-line nil
431 :     "Command used to start the most recent Forth process.")
432 :    
433 :     (defvar forth-previous-send ""
434 :     "Most recent expression transmitted to the Forth process.")
435 :    
436 :     (defvar forth-process-filter-queue '()
437 :     "Queue used to synchronize filter actions properly.")
438 :    
439 :     (defvar forth-prompt "ok"
440 :     "The current forth prompt string.")
441 :    
442 :     (defvar forth-start-hook nil
443 :     "If non-nil, a procedure to call when the Forth process is started.
444 :     When called, the current buffer will be the Forth process-buffer.")
445 :    
446 :     (defvar forth-signal-death-message nil
447 :     "If non-nil, causes a message to be generated when the Forth process dies.")
448 :    
449 : anton 1.9 (defvar forth-percent-height 50
450 : anton 1.1 "Tells run-forth how high the upper window should be in percent.")
451 :    
452 :     (defconst forth-runlight:input ?I
453 :     "The character displayed when the Forth process is waiting for input.")
454 :    
455 :     (defvar forth-mode-string ""
456 :     "String displayed in the mode line when the Forth process is running.")
457 :    
458 :     ;;;; Evaluation Commands
459 :    
460 :     (defun forth-send-string (&rest strings)
461 :     "Send the string arguments to the Forth process.
462 :     The strings are concatenated and terminated by a newline."
463 :     (cond ((forth-process-running-p)
464 :     (forth-send-string-1 strings))
465 :     ((yes-or-no-p "The Forth process has died. Reset it? ")
466 :     (reset-forth)
467 :     (goto-char (point-max))
468 :     (forth-send-string-1 strings))))
469 :    
470 :     (defun forth-send-string-1 (strings)
471 :     (let ((string (apply 'concat strings)))
472 :     (forth-send-string-2 string)))
473 :    
474 :     (defun forth-send-string-2 (string)
475 :     (let ((process (get-process forth-program-name)))
476 :     (if (not (eq (current-buffer) (get-buffer forth-program-name)))
477 :     (progn
478 :     (forth-process-filter-output string)
479 :     (forth-process-filter:finish)))
480 :     (send-string process (concat string "\n"))
481 :     (if (eq (current-buffer) (process-buffer process))
482 :     (set-marker (process-mark process) (point)))))
483 :    
484 :    
485 :     (defun forth-send-region (start end)
486 :     "Send the current region to the Forth process.
487 :     The region is sent terminated by a newline."
488 :     (interactive "r")
489 :     (let ((process (get-process forth-program-name)))
490 :     (if (and process (eq (current-buffer) (process-buffer process)))
491 :     (progn (goto-char end)
492 :     (set-marker (process-mark process) end))))
493 :     (forth-send-string "\n" (buffer-substring start end) "\n"))
494 :    
495 :     (defun forth-end-of-paragraph ()
496 :     (if (looking-at "[\t\n ]+") (skip-chars-backward "\t\n "))
497 :     (if (not (re-search-forward "\n[ \t]*\n" nil t))
498 :     (goto-char (point-max))))
499 :    
500 :     (defun forth-send-paragraph ()
501 :     "Send the current or the previous paragraph to the Forth process"
502 :     (interactive)
503 :     (let (end)
504 :     (save-excursion
505 :     (forth-end-of-paragraph)
506 :     (skip-chars-backward "\t\n ")
507 :     (setq end (point))
508 :     (if (re-search-backward "\n[ \t]*\n" nil t)
509 :     (setq start (point))
510 :     (goto-char (point-min)))
511 :     (skip-chars-forward "\t\n ")
512 :     (forth-send-region (point) end))))
513 :    
514 :     (defun forth-send-buffer ()
515 :     "Send the current buffer to the Forth process."
516 :     (interactive)
517 :     (if (eq (current-buffer) (forth-process-buffer))
518 :     (error "Not allowed to send this buffer's contents to Forth"))
519 :     (forth-send-region (point-min) (point-max)))
520 :    
521 :    
522 :     ;;;; Basic Process Control
523 :    
524 :     (defun forth-start-process (command-line)
525 :     (let ((buffer (get-buffer-create "*forth*")))
526 :     (let ((process (get-buffer-process buffer)))
527 :     (save-excursion
528 :     (set-buffer buffer)
529 :     (progn (if process (delete-process process))
530 :     (goto-char (point-max))
531 :     (setq mode-line-process '(": %s"))
532 :     (add-to-global-mode-string 'forth-mode-string)
533 :     (setq process
534 :     (apply 'start-process
535 :     (cons forth-program-name
536 :     (cons buffer
537 :     (forth-parse-command-line
538 :     command-line)))))
539 :     (set-marker (process-mark process) (point-max))
540 :     (forth-process-filter-initialize t)
541 :     (forth-modeline-initialize)
542 :     (set-process-sentinel process 'forth-process-sentinel)
543 :     (set-process-filter process 'forth-process-filter)
544 :     (run-hooks 'forth-start-hook)))
545 :     buffer)))
546 :    
547 :     (defun forth-parse-command-line (string)
548 :     (setq string (substitute-in-file-name string))
549 :     (let ((start 0)
550 :     (result '()))
551 :     (while start
552 :     (let ((index (string-match "[ \t]" string start)))
553 :     (setq start
554 :     (cond ((not index)
555 :     (setq result
556 :     (cons (substring string start)
557 :     result))
558 :     nil)
559 :     ((= index start)
560 :     (string-match "[^ \t]" string start))
561 :     (t
562 :     (setq result
563 :     (cons (substring string start index)
564 :     result))
565 :     (1+ index))))))
566 :     (nreverse result)))
567 :    
568 :    
569 :     (defun forth-process-running-p ()
570 :     "True iff there is a Forth process whose status is `run'."
571 :     (let ((process (get-process forth-program-name)))
572 :     (and process
573 :     (eq (process-status process) 'run))))
574 :    
575 :     (defun forth-process-buffer ()
576 :     (let ((process (get-process forth-program-name)))
577 :     (and process (process-buffer process))))
578 :    
579 :     ;;;; Process Filter
580 :    
581 :     (defun forth-process-sentinel (proc reason)
582 :     (let ((inhibit-quit nil))
583 :     (forth-process-filter-initialize (eq reason 'run))
584 :     (if (eq reason 'run)
585 :     (forth-modeline-initialize)
586 :     (setq forth-mode-string "")))
587 :     (if (and (not (memq reason '(run stop)))
588 :     forth-signal-death-message)
589 :     (progn (beep)
590 :     (message
591 :     "The Forth process has died! Do M-x reset-forth to restart it"))))
592 :    
593 :     (defun forth-process-filter-initialize (running-p)
594 :     (setq forth-process-filter-queue (cons '() '()))
595 :     (setq forth-prompt "ok"))
596 :    
597 :    
598 :     (defun forth-process-filter (proc string)
599 :     (forth-process-filter-output string)
600 :     (forth-process-filter:finish))
601 :    
602 :     (defun forth-process-filter:enqueue (action)
603 :     (let ((next (cons action '())))
604 :     (if (cdr forth-process-filter-queue)
605 :     (setcdr (cdr forth-process-filter-queue) next)
606 :     (setcar forth-process-filter-queue next))
607 :     (setcdr forth-process-filter-queue next)))
608 :    
609 :     (defun forth-process-filter:finish ()
610 :     (while (car forth-process-filter-queue)
611 :     (let ((next (car forth-process-filter-queue)))
612 :     (setcar forth-process-filter-queue (cdr next))
613 :     (if (not (cdr next))
614 :     (setcdr forth-process-filter-queue '()))
615 :     (apply (car (car next)) (cdr (car next))))))
616 :    
617 :     ;;;; Process Filter Output
618 :    
619 :     (defun forth-process-filter-output (&rest args)
620 :     (if (not (and args
621 :     (null (cdr args))
622 :     (stringp (car args))
623 :     (string-equal "" (car args))))
624 :     (forth-process-filter:enqueue
625 :     (cons 'forth-process-filter-output-1 args))))
626 :    
627 :     (defun forth-process-filter-output-1 (&rest args)
628 :     (save-excursion
629 :     (forth-goto-output-point)
630 :     (apply 'insert-before-markers args)))
631 :    
632 :     (defun forth-guarantee-newlines (n)
633 :     (save-excursion
634 :     (forth-goto-output-point)
635 :     (let ((stop nil))
636 :     (while (and (not stop)
637 :     (bolp))
638 :     (setq n (1- n))
639 :     (if (bobp)
640 :     (setq stop t)
641 :     (backward-char))))
642 :     (forth-goto-output-point)
643 :     (while (> n 0)
644 :     (insert-before-markers ?\n)
645 :     (setq n (1- n)))))
646 :    
647 :     (defun forth-goto-output-point ()
648 :     (let ((process (get-process forth-program-name)))
649 :     (set-buffer (process-buffer process))
650 :     (goto-char (process-mark process))))
651 :    
652 :     (defun forth-modeline-initialize ()
653 :     (setq forth-mode-string " "))
654 :    
655 :     (defun forth-set-runlight (runlight)
656 :     (aset forth-mode-string 0 runlight)
657 :     (forth-modeline-redisplay))
658 :    
659 :     (defun forth-modeline-redisplay ()
660 :     (save-excursion (set-buffer (other-buffer)))
661 :     (set-buffer-modified-p (buffer-modified-p))
662 :     (sit-for 0))
663 :    
664 :     ;;;; Process Filter Operations
665 :    
666 :     (defun add-to-global-mode-string (x)
667 :     (cond ((null global-mode-string)
668 :     (setq global-mode-string (list "" x " ")))
669 :     ((not (memq x global-mode-string))
670 :     (setq global-mode-string
671 :     (cons ""
672 :     (cons x
673 :     (cons " "
674 :     (if (equal "" (car global-mode-string))
675 :     (cdr global-mode-string)
676 :     global-mode-string))))))))
677 :    
678 :    
679 :     ;; Misc
680 :    
681 :     (setq auto-mode-alist (append auto-mode-alist
682 : pazsan 1.4 '(("\\.fs$" . forth-mode))))
683 : anton 1.1
684 :     (defun forth-split ()
685 :     (interactive)
686 :     (forth-split-1 "*forth*"))
687 :    
688 :     (defun forth-split-1 (buffer)
689 :     (if (not (eq (window-buffer) (get-buffer buffer)))
690 :     (progn
691 :     (delete-other-windows)
692 :     (split-window-vertically
693 :     (/ (* (screen-height) forth-percent-height) 100))
694 :     (other-window 1)
695 :     (switch-to-buffer buffer)
696 :     (goto-char (point-max))
697 :     (other-window 1))))
698 :    
699 :     (defun forth-reload ()
700 :     (interactive)
701 :     (let ((process (get-process forth-program-name)))
702 :     (if process (kill-process process t)))
703 :     (sleep-for-millisecs 100)
704 :     (forth-mode))
705 :    
706 :    
707 :     ;; Special section for forth-help
708 :    
709 :     (defvar forth-help-buffer "*Forth-help*"
710 :     "Buffer used to display the requested documentation.")
711 :    
712 :     (defvar forth-help-load-path nil
713 :     "List of directories to search through to find *.doc
714 :     (forth-help-file-suffix) files. Nil means current default directory.
715 :     The specified directories must contain at least one .doc file. If it
716 :     does not and you still want the load-path to scan that directory, create
717 :     an empty file dummy.doc.")
718 :    
719 :     (defvar forth-help-file-suffix "*.doc"
720 :     "The file names to search for in each directory.")
721 :    
722 :     (setq forth-search-command-prefix "grep -n \"^ [^(]* ")
723 :     (defvar forth-search-command-suffix "/dev/null")
724 :     (defvar forth-grep-error-regexp ": No such file or directory")
725 :    
726 :     (defun forth-function-called-at-point ()
727 :     "Return the space delimited word a point."
728 :     (save-excursion
729 :     (save-restriction
730 :     (narrow-to-region (max (point-min) (- (point) 1000)) (point-max))
731 :     (skip-chars-backward "^ \t\n" (point-min))
732 :     (if (looking-at "[ \t\n]")
733 :     (forward-char 1))
734 :     (let (obj (p (point)))
735 :     (skip-chars-forward "^ \t\n")
736 :     (buffer-substring p (point))))))
737 :    
738 :     (defun forth-help-names-extend-comp (path-list result)
739 :     (cond ((null path-list) result)
740 :     ((null (car path-list))
741 :     (forth-help-names-extend-comp (cdr path-list)
742 :     (concat result forth-help-file-suffix " ")))
743 :     (t (forth-help-names-extend-comp
744 :     (cdr path-list) (concat result
745 :     (expand-file-name (car path-list)) "/"
746 :     forth-help-file-suffix " ")))))
747 :    
748 :     (defun forth-help-names-extended ()
749 :     (if forth-help-load-path
750 :     (forth-help-names-extend-comp forth-help-load-path "")
751 :     (error "forth-help-load-path not specified")))
752 :    
753 :    
754 : anton 1.7 ;(define-key forth-mode-map "\C-hf" 'forth-documentation)
755 : anton 1.1
756 :     (defun forth-documentation (function)
757 :     "Display the full documentation of FORTH word."
758 :     (interactive
759 :     (let ((fn (forth-function-called-at-point))
760 :     (enable-recursive-minibuffers t)
761 :     search-list
762 :     val)
763 :     (setq val (read-string (format "Describe forth word (default %s): " fn)))
764 :     (list (if (equal val "") fn val))))
765 :     (forth-get-doc (concat forth-search-command-prefix
766 :     (grep-regexp-quote (concat function " ("))
767 :     "[^)]*\-\-\" " (forth-help-names-extended)
768 :     forth-search-command-suffix))
769 :     (message "C-x C-m switches back to the forth interaction window"))
770 :    
771 :     (defun forth-get-doc (command)
772 :     "Display the full documentation of command."
773 :     (let ((curwin (get-buffer-window (window-buffer)))
774 :     reswin
775 :     pointmax)
776 :     (with-output-to-temp-buffer forth-help-buffer
777 :     (progn
778 :     (call-process "sh" nil forth-help-buffer t "-c" command)
779 :     (setq reswin (get-buffer-window forth-help-buffer))))
780 :     (setq reswin (get-buffer-window forth-help-buffer))
781 :     (select-window reswin)
782 :     (save-excursion
783 :     (goto-char (setq pointmax (point-max)))
784 :     (insert "--------------------\n\n"))
785 :     (let (fd doc)
786 :     (while (setq fd (forth-get-file-data pointmax))
787 :     (setq doc (forth-get-doc-string fd))
788 :     (save-excursion
789 :     (goto-char (point-max))
790 :     (insert (substring (car fd) (string-match "[^/]*$" (car fd)))
791 :     ":\n\n" doc "\n")))
792 :     (if (not doc)
793 :     (progn (goto-char (point-max)) (insert "Not found"))))
794 :     (select-window curwin)))
795 :    
796 :     (defun forth-skip-error-lines ()
797 :     (let ((lines 0))
798 :     (save-excursion
799 :     (while (re-search-forward forth-grep-error-regexp nil t)
800 :     (beginning-of-line)
801 :     (forward-line 1)
802 :     (setq lines (1+ lines))))
803 :     (forward-line lines)))
804 :    
805 :     (defun forth-get-doc-string (fd)
806 :     "Find file (car fd) and extract documentation from line (nth 1 fd)."
807 :     (let (result)
808 :     (save-window-excursion
809 :     (find-file (car fd))
810 :     (goto-line (nth 1 fd))
811 :     (if (not (eq (nth 1 fd) (1+ (count-lines (point-min) (point)))))
812 :     (error "forth-get-doc-string: serious error"))
813 :     (if (not (re-search-backward "\n[\t ]*\n" nil t))
814 :     (goto-char (point-min))
815 :     (goto-char (match-end 0)))
816 :     (let ((p (point)))
817 :     (if (not (re-search-forward "\n[\t ]*\n" nil t))
818 :     (goto-char (point-max)))
819 :     (setq result (buffer-substring p (point))))
820 :     (bury-buffer (current-buffer)))
821 :     result))
822 :    
823 :     (defun forth-get-file-data (limit)
824 :     "Parse grep output and return '(filename line#) list. Return nil when
825 :     passing limit."
826 :     (forth-skip-error-lines)
827 :     (if (< (point) limit)
828 :     (let ((result (forth-get-file-data-cont limit)))
829 :     (forward-line 1)
830 :     (beginning-of-line)
831 :     result)))
832 :    
833 :     (defun forth-get-file-data-cont (limit)
834 :     (let (result)
835 :     (let ((p (point)))
836 :     (skip-chars-forward "^:")
837 :     (setq result (buffer-substring p (point))))
838 :     (if (< (point) limit)
839 :     (let ((p (1+ (point))))
840 :     (forward-char 1)
841 :     (skip-chars-forward "^:")
842 :     (list result (string-to-int (buffer-substring p (point))))))))
843 :    
844 :     (defun grep-regexp-quote (str)
845 :     (let ((i 0) (m 1) (res ""))
846 :     (while (/= m 0)
847 :     (setq m (string-to-char (substring str i)))
848 :     (if (/= m 0)
849 :     (progn
850 :     (setq i (1+ i))
851 :     (if (string-match (regexp-quote (char-to-string m))
852 :     ".*\\^$[]")
853 :     (setq res (concat res "\\")))
854 :     (setq res (concat res (char-to-string m))))))
855 :     res))
856 :    
857 :    
858 : anton 1.9 (define-key forth-mode-map "\C-x\C-e" 'compile)
859 : anton 1.1 (define-key forth-mode-map "\C-x\C-n" 'next-error)
860 :     (require 'compile "compile")
861 :    
862 : anton 1.6 (defvar forth-compile-command "gforth ")
863 : anton 1.9 ;(defvar forth-compilation-window-percent-height 30)
864 : anton 1.1
865 :     (defun forth-compile (command)
866 :     (interactive (list (setq forth-compile-command (read-string "Compile command: " forth-compile-command))))
867 :     (forth-split-1 "*compilation*")
868 :     (setq ctools-compile-command command)
869 :     (compile1 ctools-compile-command "No more errors"))
870 :    
871 :    
872 : pazsan 1.12 ;;; Forth menu
873 :     ;;; Mikael Karlsson <qramika@eras70.ericsson.se>
874 :    
875 :     (cond ((string-match "XEmacs\\|Lucid" emacs-version)
876 :     (require 'func-menu)
877 :    
878 :     (defconst fume-function-name-regexp-forth
879 :     "^\\(:\\)[ \t]+\\([^ \t]*\\)"
880 :     "Expression to get word definitions in Forth.")
881 :    
882 :     (setq fume-function-name-regexp-alist
883 :     (append '((forth-mode . fume-function-name-regexp-forth)
884 :     ) fume-function-name-regexp-alist))
885 :    
886 :     ;; Find next forth word in the buffer
887 :     (defun fume-find-next-forth-function-name (buffer)
888 :     "Searches for the next forth word in BUFFER."
889 :     (set-buffer buffer)
890 :     (if (re-search-forward fume-function-name-regexp nil t)
891 :     (let ((beg (match-beginning 2))
892 :     (end (match-end 2)))
893 :     (cons (buffer-substring beg end) beg))))
894 :    
895 :     (setq fume-find-function-name-method-alist
896 :     (append '((forth-mode . fume-find-next-forth-function-name))))
897 :    
898 :     ))
899 :     ;;; End Forth menu
900 :    
901 :     ;;; File folding of forth-files
902 :     ;;; uses outline
903 :     ;;; Toggle activation with M-x fold-f (when editing a forth-file)
904 :     ;;; Use f9 to expand, f10 to hide, Or the menubar in xemacs
905 :     ;;;
906 :     ;;; Works most of the times but loses sync with the cursor occasionally
907 :     ;;; Could be improved by also folding on comments
908 :    
909 :     (require 'outline)
910 :    
911 :     ;;(define-key outline-minor-mode-map 'f9 'show-entry)
912 :     ;;(define-key outline-minor-mode-map 'f10 'hide-entry)
913 :    
914 :     (defun fold-f ()
915 :     (interactive)
916 :     (add-hook 'outline-minor-mode-hook 'hide-body)
917 :    
918 :     ; outline mode header start, i.e. find word definitions
919 :     (setq outline-regexp "^\\(:\\)[ \t]+\\([^ \t]*\\)")
920 :    
921 :     (outline-minor-mode)
922 :     )
923 :     ;;; end file folding
924 :    
925 :     ;;; func-menu is a package that scans your source file for function definitions
926 :     ;;; and makes a menubar entry that lets you jump to any particular function
927 :     ;;; definition by selecting it from the menu. The following code turns this on
928 :     ;;; for all of the recognized languages. Scanning the buffer takes some time,
929 :     ;;; but not much.
930 :     ;;;
931 :     (cond ((string-match "XEmacs\\|Lucid" emacs-version)
932 :     (require 'func-menu)
933 :     ;; (define-key global-map 'f8 'function-menu)
934 :     (add-hook 'find-fible-hooks 'fume-add-menubar-entry)
935 :     (define-key global-map "\C-cg" 'fume-prompt-function-goto)
936 :     (define-key global-map '(shift button3) 'mouse-function-menu)
937 :     ))

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