Annotation of gforth/gforth.el, revision 1.14
1.1 anton 1: ;; This file is part of GNU Emacs.
2: ;; Changes by anton
1.6 anton 3: ;; This is a variant of forth.el that came with TILE.
1.5 anton 4: ;; I left most of this stuff untouched and made just a few changes for
1.6 anton 5: ;; 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.
1.1 anton 7:
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:
1.14 ! anton 23: ;;; $Header: /usr/local/lib/cvs-repository/src-master/gforth/gforth.el,v 1.13 1995/09/06 21:00:15 pazsan Exp $
1.1 anton 24:
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
1.14 ! anton 40: " : :noname code does> begin do ?do while if ?dup-if ?dup-not-if else case struct [if] [else] "
1.1 anton 41: "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
1.14 ! anton 46: " ; end-code does> until repeat while +loop loop s+loop else then endif again endcase end-struct [then] [else] [endif]"
1.1 anton 47: "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
1.14 ! anton 52: " : :noname code "
1.1 anton 53: "Contains all words which causes the indent to go to zero")
54:
1.6 anton 55: (defvar forth-prefixes
56: " postpone [compile] ['] [char] "
57: "words that prefix and escape other words")
58:
1.1 anton 59: (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:
1.9 anton 74: ;(define-key forth-mode-map "\M-\C-x" 'compile)
1.7 anton 75: (define-key forth-mode-map "\C-x\\" 'comment-region)
76: (define-key forth-mode-map "\C-x~" 'forth-remove-tracers)
1.1 anton 77: (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)
1.7 anton 83: (define-key forth-mode-map "\M-q" 'forth-fill-paragraph)
1.13 pazsan 84: (define-key forth-mode-map "\e." 'forth-find-tag)
1.1 anton 85:
1.13 pazsan 86: (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:
1.1 anton 93: (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))
1.6 anton 99: (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 '\'
1.13 pazsan 114: ;comments as comments. If you want it different, make the appropriate
1.6 anton 115: ;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.
1.1 anton 121:
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)
1.6 anton 134: ; (make-local-variable 'require-final-newline)
135: ; (setq require-final-newline t)
1.1 anton 136: (make-local-variable 'comment-start)
1.3 anton 137: (setq comment-start "\\ ")
138: ;(make-local-variable 'comment-end)
139: ;(setq comment-end " )")
1.1 anton 140: (make-local-variable 'comment-column)
141: (setq comment-column 40)
142: (make-local-variable 'comment-start-skip)
1.3 anton 143: (setq comment-start-skip "\\ ")
1.1 anton 144: (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:
1.2 anton 149: ;;;###autoload
1.1 anton 150: (defun forth-mode ()
151: "
152: Major mode for editing Forth code. Tab indents for Forth code. Comments
1.9 anton 153: are delimited with \\ and newline. Paragraphs are separated by blank lines
154: only. Delete converts tabs to spaces as it moves back.
1.1 anton 155: \\{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:
1.6 anton 225: (setq forth-mode-hook
1.9 anton 226: '(lambda ()
227: (make-local-variable 'compile-command)
228: (setq compile-command "gforth ")))
1.6 anton 229:
1.7 anton 230: (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:-)."
1.9 anton 233: ; 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.
1.7 anton 238: (interactive)
239: (save-excursion
240: (beginning-of-line)
1.9 anton 241: (while (and
242: (= (forward-line -1) 0)
1.14 ! anton 243: (looking-at "[ \t]*\\\\g?[ \t]+")))
! 244: (if (not (looking-at "[ \t]*\\\\g?[ \t]+"))
1.9 anton 245: (forward-line 1))
246: (let ((from (point))
247: (to (save-excursion (forward-paragraph) (point))))
1.14 ! anton 248: (if (looking-at "[ \t]*\\\\g?[ \t]+")
1.9 anton 249: (progn (goto-char (match-end 0))
250: (set-fill-prefix)
251: (fill-region from to nil))))))
1.7 anton 252:
1.1 anton 253: (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 ()
1.6 anton 347: "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.
1.1 anton 351: (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
1.6 anton 359: (skip-chars-forward "^\"\n")
360: (forward-char)))
361: ((string-match "\\\\" w1)
362: (progn
363: (end-of-line)
364: ))
365: ((or (equal "(" w1) (equal ".(" w1))
1.1 anton 366: (progn
1.6 anton 367: (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")))
1.1 anton 372: (t nil)))
373: w1))
374:
375:
376: ;; Forth commands
377:
1.7 anton 378: (defun forth-remove-tracers ()
379: "Remove tracers of the form `~~ '. Queries the user for each occurrence."
380: (interactive)
381: (query-replace "~~ " ""))
382:
1.5 anton 383: (defvar forth-program-name "gforth"
1.1 anton 384: "*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 ()
1.13 pazsan 424: (concat forth-program-name
1.1 anton 425: (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:
1.9 anton 450: (defvar forth-percent-height 50
1.1 anton 451: "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
1.4 pazsan 683: '(("\\.fs$" . forth-mode))))
1.1 anton 684:
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:
1.7 anton 755: ;(define-key forth-mode-map "\C-hf" 'forth-documentation)
1.1 anton 756:
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:
1.9 anton 859: (define-key forth-mode-map "\C-x\C-e" 'compile)
1.1 anton 860: (define-key forth-mode-map "\C-x\C-n" 'next-error)
861: (require 'compile "compile")
862:
1.6 anton 863: (defvar forth-compile-command "gforth ")
1.9 anton 864: ;(defvar forth-compilation-window-percent-height 30)
1.1 anton 865:
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:
1.12 pazsan 873: ;;; 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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