Annotation of gforth/gforth.el, revision 1.37
1.17 anton 1: ;; Forth mode for Emacs
1.31 anton 2:
3: ;; Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
4:
5: ;; This file is part of Gforth.
1.1 anton 6:
1.17 anton 7: ;; GForth is distributed in the hope that it will be useful,
1.1 anton 8: ;; but WITHOUT ANY WARRANTY. No author or distributor
9: ;; accepts responsibility to anyone for the consequences of using it
10: ;; or for whether it serves any particular purpose or works at all,
11: ;; unless he says so in writing. Refer to the GNU Emacs General Public
12: ;; License for full details.
13:
14: ;; Everyone is granted permission to copy, modify and redistribute
15: ;; GNU Emacs, but only under the conditions described in the
16: ;; GNU Emacs General Public License. A copy of this license is
1.17 anton 17: ;; supposed to have been given to you along with Gforth so you
1.1 anton 18: ;; can know your rights and responsibilities. It should be in a
19: ;; file named COPYING. Among other things, the copyright notice
20: ;; and this notice must be preserved on all copies.
1.31 anton 21:
22: ;; Changes by anton
23: ;; This is a variant of forth.el that came with TILE.
24: ;; I left most of this stuff untouched and made just a few changes for
25: ;; the things I use (mainly indentation and syntax tables).
26: ;; So there is still a lot of work to do to adapt this to gforth.
1.1 anton 27:
28: ;;-------------------------------------------------------------------
29: ;; A Forth indentation, documentation search and interaction library
30: ;;-------------------------------------------------------------------
31: ;;
32: ;; Written by Goran Rydqvist, gorry@ida.liu.se, Summer 1988
33: ;; Started: 16 July 88
34: ;; Version: 2.10
35: ;; Last update: 5 December 1989 by Mikael Patel, mip@ida.liu.se
36: ;; Last update: 25 June 1990 by Goran Rydqvist, gorry@ida.liu.se
37: ;;
38: ;; Documentation: See forth-mode (^HF forth-mode)
39: ;;-------------------------------------------------------------------
40:
41:
42: (defvar forth-positives
1.36 anton 43: " : :noname m: :m code interpretation: ;code does> begin do ?do +do -do u+do u-do while if ?dup-if ?dup-0=-if else case of struct [if] [ifdef] [ifundef] [else] with public: private: class try recover "
1.34 anton 44: "*Contains all words which will cause the indent-level to be incremented
1.1 anton 45: on the next line.
46: OBS! All words in forth-positives must be surrounded by spaces.")
47:
48: (defvar forth-negatives
1.36 anton 49: " ; ;m end-code ;code does> until repeat while +loop loop -loop s+loop else then endif again endcase endof end-struct [then] [else] [endif] endwith end-class class; how: recover endtry "
1.34 anton 50: "*Contains all words which will cause the indent-level to be decremented
1.1 anton 51: on the current line.
52: OBS! All words in forth-negatives must be surrounded by spaces.")
53:
54: (defvar forth-zeroes
1.29 pazsan 55: " : :noname code interpretation: public: private: how: implements class class; "
1.34 anton 56: "*Contains all words which causes the indent to go to zero")
1.1 anton 57:
1.21 pazsan 58: (setq forth-zero 0)
59:
60: (defvar forth-zup
1.25 pazsan 61: " how: implements "
1.21 pazsan 62: "Contains all words which causes zero indent level to change")
63:
64: (defvar forth-zdown
65: " class; how: class public: private: "
66: "Contains all words which causes zero indent level to change")
67:
1.6 anton 68: (defvar forth-prefixes
69: " postpone [compile] ['] [char] "
70: "words that prefix and escape other words")
71:
1.1 anton 72: (defvar forth-mode-abbrev-table nil
73: "Abbrev table in use in Forth-mode buffers.")
74:
75: (define-abbrev-table 'forth-mode-abbrev-table ())
76:
77: (defvar forth-mode-map nil
78: "Keymap used in Forth mode.")
79:
80: (if (not forth-mode-map)
81: (setq forth-mode-map (make-sparse-keymap)))
82:
1.9 anton 83: ;(define-key forth-mode-map "\M-\C-x" 'compile)
1.7 anton 84: (define-key forth-mode-map "\C-x\\" 'comment-region)
85: (define-key forth-mode-map "\C-x~" 'forth-remove-tracers)
1.1 anton 86: (define-key forth-mode-map "\e\C-m" 'forth-send-paragraph)
87: (define-key forth-mode-map "\eo" 'forth-send-buffer)
88: (define-key forth-mode-map "\C-x\C-m" 'forth-split)
89: (define-key forth-mode-map "\e " 'forth-reload)
90: (define-key forth-mode-map "\t" 'forth-indent-command)
91: (define-key forth-mode-map "\C-m" 'reindent-then-newline-and-indent)
1.7 anton 92: (define-key forth-mode-map "\M-q" 'forth-fill-paragraph)
1.13 pazsan 93: (define-key forth-mode-map "\e." 'forth-find-tag)
1.1 anton 94:
1.35 anton 95: ;setup for C-h C-i to work
96: (if (fboundp 'info-lookup-add-help)
97: (info-lookup-add-help
98: :topic 'symbol
99: :mode 'forth-mode
100: :regexp "[^
101: ]+"
102: :ignore-case t
103: :doc-spec '(("(gforth)Name Index" nil "`" "' "))))
104:
1.22 anton 105: (load "etags")
1.13 pazsan 106:
107: (defun forth-find-tag (tagname &optional next-p regexp-p)
108: (interactive (find-tag-interactive "Find tag: "))
109: (switch-to-buffer
110: (find-tag-noselect (concat " " tagname " ") next-p regexp-p)))
111:
1.1 anton 112: (defvar forth-mode-syntax-table nil
113: "Syntax table in use in Forth-mode buffers.")
114:
115: (if (not forth-mode-syntax-table)
116: (progn
117: (setq forth-mode-syntax-table (make-syntax-table))
1.6 anton 118: (let ((char 0))
119: (while (< char ?!)
120: (modify-syntax-entry char " " forth-mode-syntax-table)
121: (setq char (1+ char)))
122: (while (< char 256)
123: (modify-syntax-entry char "w" forth-mode-syntax-table)
124: (setq char (1+ char))))
125: (modify-syntax-entry ?\" "\"" forth-mode-syntax-table)
126: (modify-syntax-entry ?\\ "<" forth-mode-syntax-table)
127: (modify-syntax-entry ?\n ">" forth-mode-syntax-table)
128: ))
129: ;I do not define '(' and ')' as comment delimiters, because emacs
130: ;only supports one comment syntax (and a hack to accomodate C++); I
131: ;use '\' for natural language comments and '(' for formal comments
132: ;like stack comments, so for me it's better to have emacs treat '\'
1.13 pazsan 133: ;comments as comments. If you want it different, make the appropriate
1.6 anton 134: ;changes (best in your .emacs file).
135: ;
136: ;Hmm, the C++ hack could be used to support both comment syntaxes: we
137: ;can have different comment styles, if both comments start with the
138: ;same character. we could use ' ' as first and '(' and '\' as second
139: ;character. However this would fail for G\ comments.
1.1 anton 140:
141: (defconst forth-indent-level 4
142: "Indentation of Forth statements.")
143:
144: (defun forth-mode-variables ()
145: (set-syntax-table forth-mode-syntax-table)
146: (setq local-abbrev-table forth-mode-abbrev-table)
147: (make-local-variable 'paragraph-start)
148: (setq paragraph-start (concat "^$\\|" page-delimiter))
149: (make-local-variable 'paragraph-separate)
150: (setq paragraph-separate paragraph-start)
151: (make-local-variable 'indent-line-function)
152: (setq indent-line-function 'forth-indent-line)
1.6 anton 153: ; (make-local-variable 'require-final-newline)
154: ; (setq require-final-newline t)
1.1 anton 155: (make-local-variable 'comment-start)
1.3 anton 156: (setq comment-start "\\ ")
157: ;(make-local-variable 'comment-end)
158: ;(setq comment-end " )")
1.1 anton 159: (make-local-variable 'comment-column)
160: (setq comment-column 40)
161: (make-local-variable 'comment-start-skip)
1.3 anton 162: (setq comment-start-skip "\\ ")
1.1 anton 163: (make-local-variable 'comment-indent-hook)
164: (setq comment-indent-hook 'forth-comment-indent)
165: (make-local-variable 'parse-sexp-ignore-comments)
166: (setq parse-sexp-ignore-comments t))
167:
1.2 anton 168: ;;;###autoload
1.1 anton 169: (defun forth-mode ()
170: "
171: Major mode for editing Forth code. Tab indents for Forth code. Comments
1.9 anton 172: are delimited with \\ and newline. Paragraphs are separated by blank lines
1.23 anton 173: only.
1.1 anton 174: \\{forth-mode-map}
175: Forth-split
176: Positions the current buffer on top and a forth-interaction window
177: below. The window size is controlled by the forth-percent-height
178: variable (see below).
179: Forth-reload
180: Reloads the forth library and restarts the forth process.
181: Forth-send-buffer
182: Sends the current buffer, in text representation, as input to the
183: forth process.
184: Forth-send-paragraph
185: Sends the previous or the current paragraph to the forth-process.
186: Note that the cursor only need to be with in the paragraph to be sent.
187: forth-documentation
188: Search for documentation of forward adjacent to cursor. Note! To use
189: this mode you have to add a line, to your .emacs file, defining the
190: directories to search through for documentation files (se variable
191: forth-help-load-path below) e.g. (setq forth-help-load-path '(nil)).
192:
193: Variables controlling interaction and startup
194: forth-percent-height
195: Tells split how high to make the edit portion, in percent of the
196: current screen height.
197: forth-program-name
198: Tells the library which program name to execute in the interation
199: window.
200:
201: Variables controlling indentation style:
202: forth-positives
203: A string containing all words which causes the indent-level of the
204: following line to be incremented.
205: OBS! Each word must be surronded by spaces.
206: forth-negatives
207: A string containing all words which causes the indentation of the
208: current line to be decremented, if the word begin the line. These
209: words also has a cancelling effect on the indent-level of the
210: following line, independent of position.
211: OBS! Each word must be surronded by spaces.
212: forth-zeroes
213: A string containing all words which causes the indentation of the
214: current line to go to zero, if the word begin the line.
215: OBS! Each word must be surronded by spaces.
216: forth-indent-level
217: Indentation increment/decrement of Forth statements.
218:
219: Note! A word which decrements the indentation of the current line, may
220: also be mentioned in forth-positives to cause the indentation to
221: resume the previous level.
222:
223: Variables controling documentation search
224: forth-help-load-path
225: List of directories to search through to find *.doc
226: (forth-help-file-suffix) files. Nil means current default directory.
227: The specified directories must contain at least one .doc file. If it
228: does not and you still want the load-path to scan that directory, create
229: an empty file dummy.doc.
230: forth-help-file-suffix
231: The file names to search for in each directory specified by
232: forth-help-load-path. Defaulted to '*.doc'.
233: "
234: (interactive)
235: (kill-all-local-variables)
236: (use-local-map forth-mode-map)
237: (setq mode-name "Forth")
238: (setq major-mode 'forth-mode)
239: (forth-mode-variables)
240: ; (if (not (forth-process-running-p))
241: ; (run-forth forth-program-name))
242: (run-hooks 'forth-mode-hook))
243:
1.6 anton 244: (setq forth-mode-hook
1.9 anton 245: '(lambda ()
246: (make-local-variable 'compile-command)
247: (setq compile-command "gforth ")))
1.6 anton 248:
1.7 anton 249: (defun forth-fill-paragraph ()
250: "Fill comments (starting with '\'; do not fill code (block style
251: programmers who tend to fill code won't use emacs anyway:-)."
1.9 anton 252: ; Currently only comments at the start of the line are filled.
253: ; Something like lisp-fill-paragraph may be better. We cannot use
254: ; fill-paragraph, because it removes the \ from the first comment
255: ; line. Therefore we have to look for the first line of the comment
256: ; and use fill-region.
1.7 anton 257: (interactive)
258: (save-excursion
259: (beginning-of-line)
1.9 anton 260: (while (and
261: (= (forward-line -1) 0)
1.14 anton 262: (looking-at "[ \t]*\\\\g?[ \t]+")))
263: (if (not (looking-at "[ \t]*\\\\g?[ \t]+"))
1.9 anton 264: (forward-line 1))
265: (let ((from (point))
266: (to (save-excursion (forward-paragraph) (point))))
1.14 anton 267: (if (looking-at "[ \t]*\\\\g?[ \t]+")
1.9 anton 268: (progn (goto-char (match-end 0))
269: (set-fill-prefix)
270: (fill-region from to nil))))))
1.7 anton 271:
1.1 anton 272: (defun forth-comment-indent ()
273: (save-excursion
274: (beginning-of-line)
275: (if (looking-at ":[ \t]*")
276: (progn
277: (end-of-line)
278: (skip-chars-backward " \t\n")
279: (1+ (current-column)))
280: comment-column)))
281:
282: (defun forth-current-indentation ()
283: (save-excursion
284: (beginning-of-line)
285: (back-to-indentation)
286: (current-column)))
287:
288: (defun forth-delete-indentation ()
289: (let ((b nil) (m nil))
290: (save-excursion
291: (beginning-of-line)
292: (setq b (point))
293: (back-to-indentation)
294: (setq m (point)))
295: (delete-region b m)))
296:
297: (defun forth-indent-line (&optional flag)
298: "Correct indentation of the current Forth line."
299: (let ((x (forth-calculate-indent)))
300: (forth-indent-to x)))
301:
302: (defun forth-indent-command ()
303: (interactive)
304: (forth-indent-line t))
305:
306: (defun forth-indent-to (x)
307: (let ((p nil))
308: (setq p (- (current-column) (forth-current-indentation)))
309: (forth-delete-indentation)
310: (beginning-of-line)
311: (indent-to x)
312: (if (> p 0) (forward-char p))))
313:
314: ;;Calculate indent
315: (defun forth-calculate-indent ()
316: (let ((w1 nil) (indent 0) (centre 0))
317: (save-excursion
318: (beginning-of-line)
319: (skip-chars-backward " \t\n")
320: (beginning-of-line)
321: (back-to-indentation)
322: (setq indent (current-column))
323: (setq centre indent)
324: (setq indent (+ indent (forth-sum-line-indentation))))
325: (save-excursion
326: (beginning-of-line)
327: (back-to-indentation)
328: (let ((p (point)))
329: (skip-chars-forward "^ \t\n")
330: (setq w1 (buffer-substring p (point)))))
331: (if (> (- indent centre) forth-indent-level)
332: (setq indent (+ centre forth-indent-level)))
333: (if (> (- centre indent) forth-indent-level)
334: (setq indent (- centre forth-indent-level)))
335: (if (< indent 0) (setq indent 0))
336: (setq indent (- indent
337: (if (string-match
338: (regexp-quote (concat " " w1 " "))
339: forth-negatives)
340: forth-indent-level 0)))
1.21 pazsan 341: (if (string-match (regexp-quote (concat " " w1 " ")) forth-zdown)
342: (setq forth-zero 0))
1.1 anton 343: (if (string-match (regexp-quote (concat " " w1 " ")) forth-zeroes)
1.21 pazsan 344: (setq indent forth-zero))
345: (if (string-match (regexp-quote (concat " " w1 " ")) forth-zup)
346: (setq forth-zero 4))
1.1 anton 347: indent))
348:
349: (defun forth-sum-line-indentation ()
350: "Add upp the positive and negative weights of all words on the current line."
351: (let ((b (point)) (e nil) (sum 0) (w nil) (t1 nil) (t2 nil) (first t))
352: (end-of-line) (setq e (point))
353: (goto-char b)
354: (while (< (point) e)
355: (setq w (forth-next-word))
356: (setq t1 (string-match (regexp-quote (concat " " w " "))
357: forth-positives))
358: (setq t2 (string-match (regexp-quote (concat " " w " "))
359: forth-negatives))
360: (if t1
361: (setq sum (+ sum forth-indent-level)))
362: (if (and t2 (not first))
363: (setq sum (- sum forth-indent-level)))
364: (skip-chars-forward " \t")
365: (setq first nil))
366: sum))
367:
368:
369: (defun forth-next-word ()
1.6 anton 370: "Return the next forth-word. Skip anything that the forth-word takes from
371: the input stream (comments, arguments, etc.)"
372: ;actually, it would be better to use commands based on the
373: ;syntax-table or comment-start etc.
1.1 anton 374: (let ((w1 nil))
375: (while (not w1)
376: (skip-chars-forward " \t\n")
377: (let ((p (point)))
378: (skip-chars-forward "^ \t\n")
379: (setq w1 (buffer-substring p (point))))
380: (cond ((string-match "\"" w1)
381: (progn
1.6 anton 382: (skip-chars-forward "^\"\n")
383: (forward-char)))
384: ((string-match "\\\\" w1)
385: (progn
386: (end-of-line)
387: ))
388: ((or (equal "(" w1) (equal ".(" w1))
1.1 anton 389: (progn
1.6 anton 390: (skip-chars-forward "^)\n")
391: (forward-char)))
392: ((string-match (regexp-quote (concat " " w1 " ")) forth-prefixes)
393: (progn (skip-chars-forward " \t\n")
394: (skip-chars-forward "^ \t\n")))
1.1 anton 395: (t nil)))
396: w1))
397:
398:
399: ;; Forth commands
400:
1.7 anton 401: (defun forth-remove-tracers ()
402: "Remove tracers of the form `~~ '. Queries the user for each occurrence."
403: (interactive)
1.16 anton 404: (query-replace-regexp "\\(~~ \\| ~~$\\)" "" nil))
1.7 anton 405:
1.5 anton 406: (defvar forth-program-name "gforth"
1.1 anton 407: "*Program invoked by the `run-forth' command.")
408:
409: (defvar forth-band-name nil
410: "*Band loaded by the `run-forth' command.")
411:
412: (defvar forth-program-arguments nil
413: "*Arguments passed to the Forth program by the `run-forth' command.")
414:
415: (defun run-forth (command-line)
416: "Run an inferior Forth process. Output goes to the buffer `*forth*'.
417: With argument, asks for a command line. Split up screen and run forth
418: in the lower portion. The current-buffer when called will stay in the
419: upper portion of the screen, and all other windows are deleted.
420: Call run-forth again to make the *forth* buffer appear in the lower
421: part of the screen."
422: (interactive
423: (list (let ((default
424: (or forth-process-command-line
425: (forth-default-command-line))))
426: (if current-prefix-arg
427: (read-string "Run Forth: " default)
428: default))))
429: (setq forth-process-command-line command-line)
430: (forth-start-process command-line)
431: (forth-split)
432: (forth-set-runlight forth-runlight:input))
433:
1.28 anton 434: (defun run-forth-if-not ()
435: (if (not (forth-process-running-p))
436: (run-forth forth-program-name)))
437:
1.1 anton 438: (defun reset-forth ()
439: "Reset the Forth process."
440: (interactive)
441: (let ((process (get-process forth-program-name)))
442: (cond ((or (not process)
443: (not (eq (process-status process) 'run))
444: (yes-or-no-p
445: "The Forth process is running, are you SURE you want to reset it? "))
446: (message "Resetting Forth process...")
447: (forth-reload)
448: (message "Resetting Forth process...done")))))
449:
450: (defun forth-default-command-line ()
1.13 pazsan 451: (concat forth-program-name
1.1 anton 452: (if forth-program-arguments
453: (concat " " forth-program-arguments)
454: "")))
455:
456: ;;;; Internal Variables
457:
458: (defvar forth-process-command-line nil
459: "Command used to start the most recent Forth process.")
460:
461: (defvar forth-previous-send ""
462: "Most recent expression transmitted to the Forth process.")
463:
464: (defvar forth-process-filter-queue '()
465: "Queue used to synchronize filter actions properly.")
466:
467: (defvar forth-prompt "ok"
468: "The current forth prompt string.")
469:
470: (defvar forth-start-hook nil
471: "If non-nil, a procedure to call when the Forth process is started.
472: When called, the current buffer will be the Forth process-buffer.")
473:
474: (defvar forth-signal-death-message nil
475: "If non-nil, causes a message to be generated when the Forth process dies.")
476:
1.9 anton 477: (defvar forth-percent-height 50
1.1 anton 478: "Tells run-forth how high the upper window should be in percent.")
479:
480: (defconst forth-runlight:input ?I
481: "The character displayed when the Forth process is waiting for input.")
482:
483: (defvar forth-mode-string ""
484: "String displayed in the mode line when the Forth process is running.")
485:
486: ;;;; Evaluation Commands
487:
488: (defun forth-send-string (&rest strings)
489: "Send the string arguments to the Forth process.
490: The strings are concatenated and terminated by a newline."
491: (cond ((forth-process-running-p)
492: (forth-send-string-1 strings))
493: ((yes-or-no-p "The Forth process has died. Reset it? ")
494: (reset-forth)
495: (goto-char (point-max))
496: (forth-send-string-1 strings))))
497:
498: (defun forth-send-string-1 (strings)
499: (let ((string (apply 'concat strings)))
500: (forth-send-string-2 string)))
501:
502: (defun forth-send-string-2 (string)
503: (let ((process (get-process forth-program-name)))
504: (if (not (eq (current-buffer) (get-buffer forth-program-name)))
505: (progn
506: (forth-process-filter-output string)
507: (forth-process-filter:finish)))
508: (send-string process (concat string "\n"))
509: (if (eq (current-buffer) (process-buffer process))
510: (set-marker (process-mark process) (point)))))
511:
512:
513: (defun forth-send-region (start end)
514: "Send the current region to the Forth process.
515: The region is sent terminated by a newline."
516: (interactive "r")
517: (let ((process (get-process forth-program-name)))
518: (if (and process (eq (current-buffer) (process-buffer process)))
519: (progn (goto-char end)
520: (set-marker (process-mark process) end))))
521: (forth-send-string "\n" (buffer-substring start end) "\n"))
522:
523: (defun forth-end-of-paragraph ()
524: (if (looking-at "[\t\n ]+") (skip-chars-backward "\t\n "))
525: (if (not (re-search-forward "\n[ \t]*\n" nil t))
526: (goto-char (point-max))))
527:
528: (defun forth-send-paragraph ()
529: "Send the current or the previous paragraph to the Forth process"
530: (interactive)
531: (let (end)
532: (save-excursion
533: (forth-end-of-paragraph)
534: (skip-chars-backward "\t\n ")
535: (setq end (point))
536: (if (re-search-backward "\n[ \t]*\n" nil t)
537: (setq start (point))
538: (goto-char (point-min)))
539: (skip-chars-forward "\t\n ")
540: (forth-send-region (point) end))))
541:
542: (defun forth-send-buffer ()
543: "Send the current buffer to the Forth process."
544: (interactive)
545: (if (eq (current-buffer) (forth-process-buffer))
546: (error "Not allowed to send this buffer's contents to Forth"))
547: (forth-send-region (point-min) (point-max)))
548:
549:
550: ;;;; Basic Process Control
551:
552: (defun forth-start-process (command-line)
553: (let ((buffer (get-buffer-create "*forth*")))
554: (let ((process (get-buffer-process buffer)))
555: (save-excursion
556: (set-buffer buffer)
557: (progn (if process (delete-process process))
558: (goto-char (point-max))
559: (setq mode-line-process '(": %s"))
560: (add-to-global-mode-string 'forth-mode-string)
561: (setq process
562: (apply 'start-process
563: (cons forth-program-name
564: (cons buffer
565: (forth-parse-command-line
566: command-line)))))
567: (set-marker (process-mark process) (point-max))
568: (forth-process-filter-initialize t)
569: (forth-modeline-initialize)
570: (set-process-sentinel process 'forth-process-sentinel)
571: (set-process-filter process 'forth-process-filter)
572: (run-hooks 'forth-start-hook)))
573: buffer)))
574:
575: (defun forth-parse-command-line (string)
576: (setq string (substitute-in-file-name string))
577: (let ((start 0)
578: (result '()))
579: (while start
580: (let ((index (string-match "[ \t]" string start)))
581: (setq start
582: (cond ((not index)
583: (setq result
584: (cons (substring string start)
585: result))
586: nil)
587: ((= index start)
588: (string-match "[^ \t]" string start))
589: (t
590: (setq result
591: (cons (substring string start index)
592: result))
593: (1+ index))))))
594: (nreverse result)))
595:
596:
597: (defun forth-process-running-p ()
598: "True iff there is a Forth process whose status is `run'."
599: (let ((process (get-process forth-program-name)))
600: (and process
601: (eq (process-status process) 'run))))
602:
603: (defun forth-process-buffer ()
604: (let ((process (get-process forth-program-name)))
605: (and process (process-buffer process))))
606:
607: ;;;; Process Filter
608:
609: (defun forth-process-sentinel (proc reason)
610: (let ((inhibit-quit nil))
611: (forth-process-filter-initialize (eq reason 'run))
612: (if (eq reason 'run)
613: (forth-modeline-initialize)
614: (setq forth-mode-string "")))
615: (if (and (not (memq reason '(run stop)))
616: forth-signal-death-message)
617: (progn (beep)
618: (message
619: "The Forth process has died! Do M-x reset-forth to restart it"))))
620:
621: (defun forth-process-filter-initialize (running-p)
622: (setq forth-process-filter-queue (cons '() '()))
623: (setq forth-prompt "ok"))
624:
625:
626: (defun forth-process-filter (proc string)
627: (forth-process-filter-output string)
628: (forth-process-filter:finish))
629:
630: (defun forth-process-filter:enqueue (action)
631: (let ((next (cons action '())))
632: (if (cdr forth-process-filter-queue)
633: (setcdr (cdr forth-process-filter-queue) next)
634: (setcar forth-process-filter-queue next))
635: (setcdr forth-process-filter-queue next)))
636:
637: (defun forth-process-filter:finish ()
638: (while (car forth-process-filter-queue)
639: (let ((next (car forth-process-filter-queue)))
640: (setcar forth-process-filter-queue (cdr next))
641: (if (not (cdr next))
642: (setcdr forth-process-filter-queue '()))
643: (apply (car (car next)) (cdr (car next))))))
644:
645: ;;;; Process Filter Output
646:
647: (defun forth-process-filter-output (&rest args)
648: (if (not (and args
649: (null (cdr args))
650: (stringp (car args))
651: (string-equal "" (car args))))
652: (forth-process-filter:enqueue
653: (cons 'forth-process-filter-output-1 args))))
654:
655: (defun forth-process-filter-output-1 (&rest args)
656: (save-excursion
657: (forth-goto-output-point)
658: (apply 'insert-before-markers args)))
659:
660: (defun forth-guarantee-newlines (n)
661: (save-excursion
662: (forth-goto-output-point)
663: (let ((stop nil))
664: (while (and (not stop)
665: (bolp))
666: (setq n (1- n))
667: (if (bobp)
668: (setq stop t)
669: (backward-char))))
670: (forth-goto-output-point)
671: (while (> n 0)
672: (insert-before-markers ?\n)
673: (setq n (1- n)))))
674:
675: (defun forth-goto-output-point ()
676: (let ((process (get-process forth-program-name)))
677: (set-buffer (process-buffer process))
678: (goto-char (process-mark process))))
679:
680: (defun forth-modeline-initialize ()
681: (setq forth-mode-string " "))
682:
683: (defun forth-set-runlight (runlight)
684: (aset forth-mode-string 0 runlight)
685: (forth-modeline-redisplay))
686:
687: (defun forth-modeline-redisplay ()
688: (save-excursion (set-buffer (other-buffer)))
689: (set-buffer-modified-p (buffer-modified-p))
690: (sit-for 0))
691:
692: ;;;; Process Filter Operations
693:
694: (defun add-to-global-mode-string (x)
695: (cond ((null global-mode-string)
696: (setq global-mode-string (list "" x " ")))
697: ((not (memq x global-mode-string))
698: (setq global-mode-string
699: (cons ""
700: (cons x
701: (cons " "
702: (if (equal "" (car global-mode-string))
703: (cdr global-mode-string)
704: global-mode-string))))))))
705:
706:
707: ;; Misc
708:
709: (setq auto-mode-alist (append auto-mode-alist
1.4 pazsan 710: '(("\\.fs$" . forth-mode))))
1.1 anton 711:
712: (defun forth-split ()
713: (interactive)
714: (forth-split-1 "*forth*"))
715:
716: (defun forth-split-1 (buffer)
717: (if (not (eq (window-buffer) (get-buffer buffer)))
718: (progn
719: (delete-other-windows)
720: (split-window-vertically
721: (/ (* (screen-height) forth-percent-height) 100))
722: (other-window 1)
723: (switch-to-buffer buffer)
724: (goto-char (point-max))
725: (other-window 1))))
726:
727: (defun forth-reload ()
728: (interactive)
729: (let ((process (get-process forth-program-name)))
730: (if process (kill-process process t)))
1.28 anton 731: (sleep-for 0 100)
1.1 anton 732: (forth-mode))
733:
734:
735: ;; Special section for forth-help
736:
737: (defvar forth-help-buffer "*Forth-help*"
738: "Buffer used to display the requested documentation.")
739:
740: (defvar forth-help-load-path nil
741: "List of directories to search through to find *.doc
742: (forth-help-file-suffix) files. Nil means current default directory.
743: The specified directories must contain at least one .doc file. If it
744: does not and you still want the load-path to scan that directory, create
745: an empty file dummy.doc.")
746:
747: (defvar forth-help-file-suffix "*.doc"
748: "The file names to search for in each directory.")
749:
750: (setq forth-search-command-prefix "grep -n \"^ [^(]* ")
751: (defvar forth-search-command-suffix "/dev/null")
752: (defvar forth-grep-error-regexp ": No such file or directory")
753:
754: (defun forth-function-called-at-point ()
755: "Return the space delimited word a point."
756: (save-excursion
757: (save-restriction
758: (narrow-to-region (max (point-min) (- (point) 1000)) (point-max))
759: (skip-chars-backward "^ \t\n" (point-min))
760: (if (looking-at "[ \t\n]")
761: (forward-char 1))
762: (let (obj (p (point)))
763: (skip-chars-forward "^ \t\n")
764: (buffer-substring p (point))))))
765:
766: (defun forth-help-names-extend-comp (path-list result)
767: (cond ((null path-list) result)
768: ((null (car path-list))
769: (forth-help-names-extend-comp (cdr path-list)
770: (concat result forth-help-file-suffix " ")))
771: (t (forth-help-names-extend-comp
772: (cdr path-list) (concat result
773: (expand-file-name (car path-list)) "/"
774: forth-help-file-suffix " ")))))
775:
776: (defun forth-help-names-extended ()
777: (if forth-help-load-path
778: (forth-help-names-extend-comp forth-help-load-path "")
779: (error "forth-help-load-path not specified")))
780:
781:
1.7 anton 782: ;(define-key forth-mode-map "\C-hf" 'forth-documentation)
1.1 anton 783:
784: (defun forth-documentation (function)
785: "Display the full documentation of FORTH word."
786: (interactive
787: (let ((fn (forth-function-called-at-point))
788: (enable-recursive-minibuffers t)
789: search-list
790: val)
791: (setq val (read-string (format "Describe forth word (default %s): " fn)))
792: (list (if (equal val "") fn val))))
793: (forth-get-doc (concat forth-search-command-prefix
794: (grep-regexp-quote (concat function " ("))
795: "[^)]*\-\-\" " (forth-help-names-extended)
796: forth-search-command-suffix))
797: (message "C-x C-m switches back to the forth interaction window"))
798:
799: (defun forth-get-doc (command)
800: "Display the full documentation of command."
801: (let ((curwin (get-buffer-window (window-buffer)))
802: reswin
803: pointmax)
804: (with-output-to-temp-buffer forth-help-buffer
805: (progn
806: (call-process "sh" nil forth-help-buffer t "-c" command)
807: (setq reswin (get-buffer-window forth-help-buffer))))
808: (setq reswin (get-buffer-window forth-help-buffer))
809: (select-window reswin)
810: (save-excursion
811: (goto-char (setq pointmax (point-max)))
812: (insert "--------------------\n\n"))
813: (let (fd doc)
814: (while (setq fd (forth-get-file-data pointmax))
815: (setq doc (forth-get-doc-string fd))
816: (save-excursion
817: (goto-char (point-max))
818: (insert (substring (car fd) (string-match "[^/]*$" (car fd)))
819: ":\n\n" doc "\n")))
820: (if (not doc)
821: (progn (goto-char (point-max)) (insert "Not found"))))
822: (select-window curwin)))
823:
824: (defun forth-skip-error-lines ()
825: (let ((lines 0))
826: (save-excursion
827: (while (re-search-forward forth-grep-error-regexp nil t)
828: (beginning-of-line)
829: (forward-line 1)
830: (setq lines (1+ lines))))
831: (forward-line lines)))
832:
833: (defun forth-get-doc-string (fd)
834: "Find file (car fd) and extract documentation from line (nth 1 fd)."
835: (let (result)
836: (save-window-excursion
837: (find-file (car fd))
838: (goto-line (nth 1 fd))
839: (if (not (eq (nth 1 fd) (1+ (count-lines (point-min) (point)))))
840: (error "forth-get-doc-string: serious error"))
841: (if (not (re-search-backward "\n[\t ]*\n" nil t))
842: (goto-char (point-min))
843: (goto-char (match-end 0)))
844: (let ((p (point)))
845: (if (not (re-search-forward "\n[\t ]*\n" nil t))
846: (goto-char (point-max)))
847: (setq result (buffer-substring p (point))))
848: (bury-buffer (current-buffer)))
849: result))
850:
851: (defun forth-get-file-data (limit)
852: "Parse grep output and return '(filename line#) list. Return nil when
853: passing limit."
854: (forth-skip-error-lines)
855: (if (< (point) limit)
856: (let ((result (forth-get-file-data-cont limit)))
857: (forward-line 1)
858: (beginning-of-line)
859: result)))
860:
861: (defun forth-get-file-data-cont (limit)
862: (let (result)
863: (let ((p (point)))
864: (skip-chars-forward "^:")
865: (setq result (buffer-substring p (point))))
866: (if (< (point) limit)
867: (let ((p (1+ (point))))
868: (forward-char 1)
869: (skip-chars-forward "^:")
870: (list result (string-to-int (buffer-substring p (point))))))))
871:
872: (defun grep-regexp-quote (str)
873: (let ((i 0) (m 1) (res ""))
874: (while (/= m 0)
875: (setq m (string-to-char (substring str i)))
876: (if (/= m 0)
877: (progn
878: (setq i (1+ i))
879: (if (string-match (regexp-quote (char-to-string m))
880: ".*\\^$[]")
881: (setq res (concat res "\\")))
882: (setq res (concat res (char-to-string m))))))
883: res))
884:
885:
1.9 anton 886: (define-key forth-mode-map "\C-x\C-e" 'compile)
1.1 anton 887: (define-key forth-mode-map "\C-x\C-n" 'next-error)
888: (require 'compile "compile")
889:
1.6 anton 890: (defvar forth-compile-command "gforth ")
1.9 anton 891: ;(defvar forth-compilation-window-percent-height 30)
1.1 anton 892:
893: (defun forth-compile (command)
894: (interactive (list (setq forth-compile-command (read-string "Compile command: " forth-compile-command))))
895: (forth-split-1 "*compilation*")
896: (setq ctools-compile-command command)
897: (compile1 ctools-compile-command "No more errors"))
898:
899:
1.12 pazsan 900: ;;; Forth menu
901: ;;; Mikael Karlsson <qramika@eras70.ericsson.se>
902:
903: (cond ((string-match "XEmacs\\|Lucid" emacs-version)
904: (require 'func-menu)
905:
906: (defconst fume-function-name-regexp-forth
907: "^\\(:\\)[ \t]+\\([^ \t]*\\)"
908: "Expression to get word definitions in Forth.")
909:
910: (setq fume-function-name-regexp-alist
911: (append '((forth-mode . fume-function-name-regexp-forth)
912: ) fume-function-name-regexp-alist))
913:
914: ;; Find next forth word in the buffer
915: (defun fume-find-next-forth-function-name (buffer)
916: "Searches for the next forth word in BUFFER."
917: (set-buffer buffer)
918: (if (re-search-forward fume-function-name-regexp nil t)
919: (let ((beg (match-beginning 2))
920: (end (match-end 2)))
921: (cons (buffer-substring beg end) beg))))
922:
923: (setq fume-find-function-name-method-alist
924: (append '((forth-mode . fume-find-next-forth-function-name))))
925:
926: ))
927: ;;; End Forth menu
928:
929: ;;; File folding of forth-files
930: ;;; uses outline
931: ;;; Toggle activation with M-x fold-f (when editing a forth-file)
932: ;;; Use f9 to expand, f10 to hide, Or the menubar in xemacs
933: ;;;
934: ;;; Works most of the times but loses sync with the cursor occasionally
935: ;;; Could be improved by also folding on comments
936:
937: (require 'outline)
938:
1.29 pazsan 939: (defun f-outline-level ()
940: (cond ((looking-at "\\`\\\\")
941: 0)
942: ((looking-at "\\\\ SEC")
943: 0)
944: ((looking-at "\\\\ \\\\ .*")
945: 0)
946: ((looking-at "\\\\ DEFS")
947: 1)
948: ((looking-at "\\/\\* ")
949: 1)
950: ((looking-at ": .*")
951: 1)
952: ((looking-at "\\\\G")
953: 2)
954: ((looking-at "[ \t]+\\\\")
955: 3))
956: )
1.12 pazsan 957:
958: (defun fold-f ()
959: (interactive)
960: (add-hook 'outline-minor-mode-hook 'hide-body)
961:
962: ; outline mode header start, i.e. find word definitions
1.29 pazsan 963: ;;; (setq outline-regexp "^\\(:\\)[ \t]+\\([^ \t]*\\)")
964: (setq outline-regexp "\\`\\\\\\|:\\|\\\\ SEC\\|\\\\G\\|[ \t]+\\\\\\|\\\\ DEFS\\|\\/\\*\\|\\\\ \\\\ .*")
965: (setq outline-level 'f-outline-level)
1.12 pazsan 966:
967: (outline-minor-mode)
1.30 anton 968: (define-key outline-minor-mode-map '(shift up) 'hide-sublevels)
969: (define-key outline-minor-mode-map '(shift right) 'show-children)
970: (define-key outline-minor-mode-map '(shift left) 'hide-subtree)
971: (define-key outline-minor-mode-map '(shift down) 'show-subtree)
1.29 pazsan 972:
1.12 pazsan 973: )
1.29 pazsan 974:
975: ;;(define-key global-map '(shift up) 'fold-f)
976:
1.12 pazsan 977: ;;; end file folding
978:
979: ;;; func-menu is a package that scans your source file for function definitions
980: ;;; and makes a menubar entry that lets you jump to any particular function
981: ;;; definition by selecting it from the menu. The following code turns this on
982: ;;; for all of the recognized languages. Scanning the buffer takes some time,
983: ;;; but not much.
984: ;;;
985: (cond ((string-match "XEmacs\\|Lucid" emacs-version)
986: (require 'func-menu)
987: ;; (define-key global-map 'f8 'function-menu)
988: (add-hook 'find-fible-hooks 'fume-add-menubar-entry)
1.30 anton 989: ; (define-key global-map "\C-cg" 'fume-prompt-function-goto)
990: ; (define-key global-map '(shift button3) 'mouse-function-menu)
1.29 pazsan 991: ))
992:
1.37 ! pazsan 993: ;;; Highlighting
! 994:
! 995: (if (not (file-exists-p "/usr/share/emacs/site-lisp/hl319.el"))
! 996: (require 'hilit19)
! 997: (require 'hl319))
! 998:
! 999: (hilit-set-mode-patterns
! 1000: '(forth-mode)
! 1001: (append
! 1002: '(("\\\\ \\(.*\\)$" nil comment)) ; comments
! 1003: '(("( [^)]* -- [^)]* )" nil decl))
! 1004: '(("( -- [^)]* )" nil decl))
! 1005: '(("( [^)]* -- )" nil decl))
! 1006: '(("( -- )" nil decl))
! 1007: '(("( " ")" comment))
! 1008: '(("\" [^\"]*\"" nil string))
! 1009: '(("\\(IF\\|ELSE\\|THEN\\|BEGIN\\|WHILE\\|REPEAT\\|UNTIL\\)" nil keyword))
! 1010: '((": *[^ ]*" nil defun))
! 1011: '(("Defer *[^ ]*" nil defun))
! 1012: '(("Variable *[^ ]*" nil define))
! 1013: '(("Constant *[^ ]*" nil define))
! 1014: '(("include *[^ ]*" nil include))
! 1015: '(("require *[^ ]*" nil include))
! 1016: '(("[ ]\\$[0-9A-Fa-f]+" nil formula))
! 1017: '(("[ ]&[0-9]+" nil formula))
! 1018: '(("[ ][0-9]+" nil formula))
! 1019: '(("[ ]%[01]+" nil formula))
! 1020: '(("[ ]'[^ ]+" nil formula))
! 1021: '((":noname" nil defun))))
! 1022:
1.29 pazsan 1023: ;; end
1024:
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