Annotation of gforth/gforth.el, revision 1.10
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:
1.10 ! anton 23: ;;; $Header: /usr/local/lib/cvs-repository/src-master/gforth/gforth.el,v 1.9 1995/01/12 18:37:53 anton 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
1.6 anton 40: " : :noname begin do ?do while if ?dup-if ?dup-not-if else case create does> exception> 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
1.6 anton 46: " ; until repeat while +loop loop s+loop else then endif again endcase does> end-struct [then] [else] "
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
1.5 anton 52: " : :noname "
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)
1.1 anton 84:
85: (defvar forth-mode-syntax-table nil
86: "Syntax table in use in Forth-mode buffers.")
87:
88: (if (not forth-mode-syntax-table)
89: (progn
90: (setq forth-mode-syntax-table (make-syntax-table))
1.6 anton 91: (let ((char 0))
92: (while (< char ?!)
93: (modify-syntax-entry char " " forth-mode-syntax-table)
94: (setq char (1+ char)))
95: (while (< char 256)
96: (modify-syntax-entry char "w" forth-mode-syntax-table)
97: (setq char (1+ char))))
98: (modify-syntax-entry ?\" "\"" forth-mode-syntax-table)
99: (modify-syntax-entry ?\\ "<" forth-mode-syntax-table)
100: (modify-syntax-entry ?\n ">" forth-mode-syntax-table)
101: ))
102: ;I do not define '(' and ')' as comment delimiters, because emacs
103: ;only supports one comment syntax (and a hack to accomodate C++); I
104: ;use '\' for natural language comments and '(' for formal comments
105: ;like stack comments, so for me it's better to have emacs treat '\'
106: ;comments as comments. I you want it different, make the appropriate
107: ;changes (best in your .emacs file).
108: ;
109: ;Hmm, the C++ hack could be used to support both comment syntaxes: we
110: ;can have different comment styles, if both comments start with the
111: ;same character. we could use ' ' as first and '(' and '\' as second
112: ;character. However this would fail for G\ comments.
1.1 anton 113:
114: (defconst forth-indent-level 4
115: "Indentation of Forth statements.")
116:
117: (defun forth-mode-variables ()
118: (set-syntax-table forth-mode-syntax-table)
119: (setq local-abbrev-table forth-mode-abbrev-table)
120: (make-local-variable 'paragraph-start)
121: (setq paragraph-start (concat "^$\\|" page-delimiter))
122: (make-local-variable 'paragraph-separate)
123: (setq paragraph-separate paragraph-start)
124: (make-local-variable 'indent-line-function)
125: (setq indent-line-function 'forth-indent-line)
1.6 anton 126: ; (make-local-variable 'require-final-newline)
127: ; (setq require-final-newline t)
1.1 anton 128: (make-local-variable 'comment-start)
1.3 anton 129: (setq comment-start "\\ ")
130: ;(make-local-variable 'comment-end)
131: ;(setq comment-end " )")
1.1 anton 132: (make-local-variable 'comment-column)
133: (setq comment-column 40)
134: (make-local-variable 'comment-start-skip)
1.3 anton 135: (setq comment-start-skip "\\ ")
1.1 anton 136: (make-local-variable 'comment-indent-hook)
137: (setq comment-indent-hook 'forth-comment-indent)
138: (make-local-variable 'parse-sexp-ignore-comments)
139: (setq parse-sexp-ignore-comments t))
140:
1.2 anton 141: ;;;###autoload
1.1 anton 142: (defun forth-mode ()
143: "
144: Major mode for editing Forth code. Tab indents for Forth code. Comments
1.9 anton 145: are delimited with \\ and newline. Paragraphs are separated by blank lines
146: only. Delete converts tabs to spaces as it moves back.
1.1 anton 147: \\{forth-mode-map}
148: Forth-split
149: Positions the current buffer on top and a forth-interaction window
150: below. The window size is controlled by the forth-percent-height
151: variable (see below).
152: Forth-reload
153: Reloads the forth library and restarts the forth process.
154: Forth-send-buffer
155: Sends the current buffer, in text representation, as input to the
156: forth process.
157: Forth-send-paragraph
158: Sends the previous or the current paragraph to the forth-process.
159: Note that the cursor only need to be with in the paragraph to be sent.
160: forth-documentation
161: Search for documentation of forward adjacent to cursor. Note! To use
162: this mode you have to add a line, to your .emacs file, defining the
163: directories to search through for documentation files (se variable
164: forth-help-load-path below) e.g. (setq forth-help-load-path '(nil)).
165:
166: Variables controlling interaction and startup
167: forth-percent-height
168: Tells split how high to make the edit portion, in percent of the
169: current screen height.
170: forth-program-name
171: Tells the library which program name to execute in the interation
172: window.
173:
174: Variables controlling indentation style:
175: forth-positives
176: A string containing all words which causes the indent-level of the
177: following line to be incremented.
178: OBS! Each word must be surronded by spaces.
179: forth-negatives
180: A string containing all words which causes the indentation of the
181: current line to be decremented, if the word begin the line. These
182: words also has a cancelling effect on the indent-level of the
183: following line, independent of position.
184: OBS! Each word must be surronded by spaces.
185: forth-zeroes
186: A string containing all words which causes the indentation of the
187: current line to go to zero, if the word begin the line.
188: OBS! Each word must be surronded by spaces.
189: forth-indent-level
190: Indentation increment/decrement of Forth statements.
191:
192: Note! A word which decrements the indentation of the current line, may
193: also be mentioned in forth-positives to cause the indentation to
194: resume the previous level.
195:
196: Variables controling documentation search
197: forth-help-load-path
198: List of directories to search through to find *.doc
199: (forth-help-file-suffix) files. Nil means current default directory.
200: The specified directories must contain at least one .doc file. If it
201: does not and you still want the load-path to scan that directory, create
202: an empty file dummy.doc.
203: forth-help-file-suffix
204: The file names to search for in each directory specified by
205: forth-help-load-path. Defaulted to '*.doc'.
206: "
207: (interactive)
208: (kill-all-local-variables)
209: (use-local-map forth-mode-map)
210: (setq mode-name "Forth")
211: (setq major-mode 'forth-mode)
212: (forth-mode-variables)
213: ; (if (not (forth-process-running-p))
214: ; (run-forth forth-program-name))
215: (run-hooks 'forth-mode-hook))
216:
1.6 anton 217: (setq forth-mode-hook
1.9 anton 218: '(lambda ()
219: (make-local-variable 'compile-command)
220: (setq compile-command "gforth ")))
1.6 anton 221:
1.7 anton 222: (defun forth-fill-paragraph ()
223: "Fill comments (starting with '\'; do not fill code (block style
224: programmers who tend to fill code won't use emacs anyway:-)."
1.9 anton 225: ; Currently only comments at the start of the line are filled.
226: ; Something like lisp-fill-paragraph may be better. We cannot use
227: ; fill-paragraph, because it removes the \ from the first comment
228: ; line. Therefore we have to look for the first line of the comment
229: ; and use fill-region.
1.7 anton 230: (interactive)
231: (save-excursion
232: (beginning-of-line)
1.9 anton 233: (while (and
234: (= (forward-line -1) 0)
235: (looking-at "[ \t]*\\\\[ \t]+")))
236: (if (not (looking-at "[ \t]*\\\\[ \t]+"))
237: (forward-line 1))
238: (let ((from (point))
239: (to (save-excursion (forward-paragraph) (point))))
240: (if (looking-at "[ \t]*\\\\[ \t]+")
241: (progn (goto-char (match-end 0))
242: (set-fill-prefix)
243: (fill-region from to nil))))))
1.7 anton 244:
1.1 anton 245: (defun forth-comment-indent ()
246: (save-excursion
247: (beginning-of-line)
248: (if (looking-at ":[ \t]*")
249: (progn
250: (end-of-line)
251: (skip-chars-backward " \t\n")
252: (1+ (current-column)))
253: comment-column)))
254:
255: (defun forth-current-indentation ()
256: (save-excursion
257: (beginning-of-line)
258: (back-to-indentation)
259: (current-column)))
260:
261: (defun forth-delete-indentation ()
262: (let ((b nil) (m nil))
263: (save-excursion
264: (beginning-of-line)
265: (setq b (point))
266: (back-to-indentation)
267: (setq m (point)))
268: (delete-region b m)))
269:
270: (defun forth-indent-line (&optional flag)
271: "Correct indentation of the current Forth line."
272: (let ((x (forth-calculate-indent)))
273: (forth-indent-to x)))
274:
275: (defun forth-indent-command ()
276: (interactive)
277: (forth-indent-line t))
278:
279: (defun forth-indent-to (x)
280: (let ((p nil))
281: (setq p (- (current-column) (forth-current-indentation)))
282: (forth-delete-indentation)
283: (beginning-of-line)
284: (indent-to x)
285: (if (> p 0) (forward-char p))))
286:
287: ;;Calculate indent
288: (defun forth-calculate-indent ()
289: (let ((w1 nil) (indent 0) (centre 0))
290: (save-excursion
291: (beginning-of-line)
292: (skip-chars-backward " \t\n")
293: (beginning-of-line)
294: (back-to-indentation)
295: (setq indent (current-column))
296: (setq centre indent)
297: (setq indent (+ indent (forth-sum-line-indentation))))
298: (save-excursion
299: (beginning-of-line)
300: (back-to-indentation)
301: (let ((p (point)))
302: (skip-chars-forward "^ \t\n")
303: (setq w1 (buffer-substring p (point)))))
304: (if (> (- indent centre) forth-indent-level)
305: (setq indent (+ centre forth-indent-level)))
306: (if (> (- centre indent) forth-indent-level)
307: (setq indent (- centre forth-indent-level)))
308: (if (< indent 0) (setq indent 0))
309: (setq indent (- indent
310: (if (string-match
311: (regexp-quote (concat " " w1 " "))
312: forth-negatives)
313: forth-indent-level 0)))
314: (if (string-match (regexp-quote (concat " " w1 " ")) forth-zeroes)
315: (setq indent 0))
316: indent))
317:
318: (defun forth-sum-line-indentation ()
319: "Add upp the positive and negative weights of all words on the current line."
320: (let ((b (point)) (e nil) (sum 0) (w nil) (t1 nil) (t2 nil) (first t))
321: (end-of-line) (setq e (point))
322: (goto-char b)
323: (while (< (point) e)
324: (setq w (forth-next-word))
325: (setq t1 (string-match (regexp-quote (concat " " w " "))
326: forth-positives))
327: (setq t2 (string-match (regexp-quote (concat " " w " "))
328: forth-negatives))
329: (if t1
330: (setq sum (+ sum forth-indent-level)))
331: (if (and t2 (not first))
332: (setq sum (- sum forth-indent-level)))
333: (skip-chars-forward " \t")
334: (setq first nil))
335: sum))
336:
337:
338: (defun forth-next-word ()
1.6 anton 339: "Return the next forth-word. Skip anything that the forth-word takes from
340: the input stream (comments, arguments, etc.)"
341: ;actually, it would be better to use commands based on the
342: ;syntax-table or comment-start etc.
1.1 anton 343: (let ((w1 nil))
344: (while (not w1)
345: (skip-chars-forward " \t\n")
346: (let ((p (point)))
347: (skip-chars-forward "^ \t\n")
348: (setq w1 (buffer-substring p (point))))
349: (cond ((string-match "\"" w1)
350: (progn
1.6 anton 351: (skip-chars-forward "^\"\n")
352: (forward-char)))
353: ((string-match "\\\\" w1)
354: (progn
355: (end-of-line)
356: ))
357: ((or (equal "(" w1) (equal ".(" w1))
1.1 anton 358: (progn
1.6 anton 359: (skip-chars-forward "^)\n")
360: (forward-char)))
361: ((string-match (regexp-quote (concat " " w1 " ")) forth-prefixes)
362: (progn (skip-chars-forward " \t\n")
363: (skip-chars-forward "^ \t\n")))
1.1 anton 364: (t nil)))
365: w1))
366:
367:
368: ;; Forth commands
369:
1.7 anton 370: (defun forth-remove-tracers ()
371: "Remove tracers of the form `~~ '. Queries the user for each occurrence."
372: (interactive)
373: (query-replace "~~ " ""))
374:
1.5 anton 375: (defvar forth-program-name "gforth"
1.1 anton 376: "*Program invoked by the `run-forth' command.")
377:
378: (defvar forth-band-name nil
379: "*Band loaded by the `run-forth' command.")
380:
381: (defvar forth-program-arguments nil
382: "*Arguments passed to the Forth program by the `run-forth' command.")
383:
384: (defun run-forth (command-line)
385: "Run an inferior Forth process. Output goes to the buffer `*forth*'.
386: With argument, asks for a command line. Split up screen and run forth
387: in the lower portion. The current-buffer when called will stay in the
388: upper portion of the screen, and all other windows are deleted.
389: Call run-forth again to make the *forth* buffer appear in the lower
390: part of the screen."
391: (interactive
392: (list (let ((default
393: (or forth-process-command-line
394: (forth-default-command-line))))
395: (if current-prefix-arg
396: (read-string "Run Forth: " default)
397: default))))
398: (setq forth-process-command-line command-line)
399: (forth-start-process command-line)
400: (forth-split)
401: (forth-set-runlight forth-runlight:input))
402:
403: (defun reset-forth ()
404: "Reset the Forth process."
405: (interactive)
406: (let ((process (get-process forth-program-name)))
407: (cond ((or (not process)
408: (not (eq (process-status process) 'run))
409: (yes-or-no-p
410: "The Forth process is running, are you SURE you want to reset it? "))
411: (message "Resetting Forth process...")
412: (forth-reload)
413: (message "Resetting Forth process...done")))))
414:
415: (defun forth-default-command-line ()
416: (concat forth-program-name " -emacs"
417: (if forth-program-arguments
418: (concat " " forth-program-arguments)
419: "")
420: (if forth-band-name
421: (concat " -band " forth-band-name)
422: "")))
423:
424: ;;;; Internal Variables
425:
426: (defvar forth-process-command-line nil
427: "Command used to start the most recent Forth process.")
428:
429: (defvar forth-previous-send ""
430: "Most recent expression transmitted to the Forth process.")
431:
432: (defvar forth-process-filter-queue '()
433: "Queue used to synchronize filter actions properly.")
434:
435: (defvar forth-prompt "ok"
436: "The current forth prompt string.")
437:
438: (defvar forth-start-hook nil
439: "If non-nil, a procedure to call when the Forth process is started.
440: When called, the current buffer will be the Forth process-buffer.")
441:
442: (defvar forth-signal-death-message nil
443: "If non-nil, causes a message to be generated when the Forth process dies.")
444:
1.9 anton 445: (defvar forth-percent-height 50
1.1 anton 446: "Tells run-forth how high the upper window should be in percent.")
447:
448: (defconst forth-runlight:input ?I
449: "The character displayed when the Forth process is waiting for input.")
450:
451: (defvar forth-mode-string ""
452: "String displayed in the mode line when the Forth process is running.")
453:
454: ;;;; Evaluation Commands
455:
456: (defun forth-send-string (&rest strings)
457: "Send the string arguments to the Forth process.
458: The strings are concatenated and terminated by a newline."
459: (cond ((forth-process-running-p)
460: (forth-send-string-1 strings))
461: ((yes-or-no-p "The Forth process has died. Reset it? ")
462: (reset-forth)
463: (goto-char (point-max))
464: (forth-send-string-1 strings))))
465:
466: (defun forth-send-string-1 (strings)
467: (let ((string (apply 'concat strings)))
468: (forth-send-string-2 string)))
469:
470: (defun forth-send-string-2 (string)
471: (let ((process (get-process forth-program-name)))
472: (if (not (eq (current-buffer) (get-buffer forth-program-name)))
473: (progn
474: (forth-process-filter-output string)
475: (forth-process-filter:finish)))
476: (send-string process (concat string "\n"))
477: (if (eq (current-buffer) (process-buffer process))
478: (set-marker (process-mark process) (point)))))
479:
480:
481: (defun forth-send-region (start end)
482: "Send the current region to the Forth process.
483: The region is sent terminated by a newline."
484: (interactive "r")
485: (let ((process (get-process forth-program-name)))
486: (if (and process (eq (current-buffer) (process-buffer process)))
487: (progn (goto-char end)
488: (set-marker (process-mark process) end))))
489: (forth-send-string "\n" (buffer-substring start end) "\n"))
490:
491: (defun forth-end-of-paragraph ()
492: (if (looking-at "[\t\n ]+") (skip-chars-backward "\t\n "))
493: (if (not (re-search-forward "\n[ \t]*\n" nil t))
494: (goto-char (point-max))))
495:
496: (defun forth-send-paragraph ()
497: "Send the current or the previous paragraph to the Forth process"
498: (interactive)
499: (let (end)
500: (save-excursion
501: (forth-end-of-paragraph)
502: (skip-chars-backward "\t\n ")
503: (setq end (point))
504: (if (re-search-backward "\n[ \t]*\n" nil t)
505: (setq start (point))
506: (goto-char (point-min)))
507: (skip-chars-forward "\t\n ")
508: (forth-send-region (point) end))))
509:
510: (defun forth-send-buffer ()
511: "Send the current buffer to the Forth process."
512: (interactive)
513: (if (eq (current-buffer) (forth-process-buffer))
514: (error "Not allowed to send this buffer's contents to Forth"))
515: (forth-send-region (point-min) (point-max)))
516:
517:
518: ;;;; Basic Process Control
519:
520: (defun forth-start-process (command-line)
521: (let ((buffer (get-buffer-create "*forth*")))
522: (let ((process (get-buffer-process buffer)))
523: (save-excursion
524: (set-buffer buffer)
525: (progn (if process (delete-process process))
526: (goto-char (point-max))
527: (setq mode-line-process '(": %s"))
528: (add-to-global-mode-string 'forth-mode-string)
529: (setq process
530: (apply 'start-process
531: (cons forth-program-name
532: (cons buffer
533: (forth-parse-command-line
534: command-line)))))
535: (set-marker (process-mark process) (point-max))
536: (forth-process-filter-initialize t)
537: (forth-modeline-initialize)
538: (set-process-sentinel process 'forth-process-sentinel)
539: (set-process-filter process 'forth-process-filter)
540: (run-hooks 'forth-start-hook)))
541: buffer)))
542:
543: (defun forth-parse-command-line (string)
544: (setq string (substitute-in-file-name string))
545: (let ((start 0)
546: (result '()))
547: (while start
548: (let ((index (string-match "[ \t]" string start)))
549: (setq start
550: (cond ((not index)
551: (setq result
552: (cons (substring string start)
553: result))
554: nil)
555: ((= index start)
556: (string-match "[^ \t]" string start))
557: (t
558: (setq result
559: (cons (substring string start index)
560: result))
561: (1+ index))))))
562: (nreverse result)))
563:
564:
565: (defun forth-process-running-p ()
566: "True iff there is a Forth process whose status is `run'."
567: (let ((process (get-process forth-program-name)))
568: (and process
569: (eq (process-status process) 'run))))
570:
571: (defun forth-process-buffer ()
572: (let ((process (get-process forth-program-name)))
573: (and process (process-buffer process))))
574:
575: ;;;; Process Filter
576:
577: (defun forth-process-sentinel (proc reason)
578: (let ((inhibit-quit nil))
579: (forth-process-filter-initialize (eq reason 'run))
580: (if (eq reason 'run)
581: (forth-modeline-initialize)
582: (setq forth-mode-string "")))
583: (if (and (not (memq reason '(run stop)))
584: forth-signal-death-message)
585: (progn (beep)
586: (message
587: "The Forth process has died! Do M-x reset-forth to restart it"))))
588:
589: (defun forth-process-filter-initialize (running-p)
590: (setq forth-process-filter-queue (cons '() '()))
591: (setq forth-prompt "ok"))
592:
593:
594: (defun forth-process-filter (proc string)
595: (forth-process-filter-output string)
596: (forth-process-filter:finish))
597:
598: (defun forth-process-filter:enqueue (action)
599: (let ((next (cons action '())))
600: (if (cdr forth-process-filter-queue)
601: (setcdr (cdr forth-process-filter-queue) next)
602: (setcar forth-process-filter-queue next))
603: (setcdr forth-process-filter-queue next)))
604:
605: (defun forth-process-filter:finish ()
606: (while (car forth-process-filter-queue)
607: (let ((next (car forth-process-filter-queue)))
608: (setcar forth-process-filter-queue (cdr next))
609: (if (not (cdr next))
610: (setcdr forth-process-filter-queue '()))
611: (apply (car (car next)) (cdr (car next))))))
612:
613: ;;;; Process Filter Output
614:
615: (defun forth-process-filter-output (&rest args)
616: (if (not (and args
617: (null (cdr args))
618: (stringp (car args))
619: (string-equal "" (car args))))
620: (forth-process-filter:enqueue
621: (cons 'forth-process-filter-output-1 args))))
622:
623: (defun forth-process-filter-output-1 (&rest args)
624: (save-excursion
625: (forth-goto-output-point)
626: (apply 'insert-before-markers args)))
627:
628: (defun forth-guarantee-newlines (n)
629: (save-excursion
630: (forth-goto-output-point)
631: (let ((stop nil))
632: (while (and (not stop)
633: (bolp))
634: (setq n (1- n))
635: (if (bobp)
636: (setq stop t)
637: (backward-char))))
638: (forth-goto-output-point)
639: (while (> n 0)
640: (insert-before-markers ?\n)
641: (setq n (1- n)))))
642:
643: (defun forth-goto-output-point ()
644: (let ((process (get-process forth-program-name)))
645: (set-buffer (process-buffer process))
646: (goto-char (process-mark process))))
647:
648: (defun forth-modeline-initialize ()
649: (setq forth-mode-string " "))
650:
651: (defun forth-set-runlight (runlight)
652: (aset forth-mode-string 0 runlight)
653: (forth-modeline-redisplay))
654:
655: (defun forth-modeline-redisplay ()
656: (save-excursion (set-buffer (other-buffer)))
657: (set-buffer-modified-p (buffer-modified-p))
658: (sit-for 0))
659:
660: ;;;; Process Filter Operations
661:
662: (defun add-to-global-mode-string (x)
663: (cond ((null global-mode-string)
664: (setq global-mode-string (list "" x " ")))
665: ((not (memq x global-mode-string))
666: (setq global-mode-string
667: (cons ""
668: (cons x
669: (cons " "
670: (if (equal "" (car global-mode-string))
671: (cdr global-mode-string)
672: global-mode-string))))))))
673:
674:
675: ;; Misc
676:
677: (setq auto-mode-alist (append auto-mode-alist
1.4 pazsan 678: '(("\\.fs$" . forth-mode))))
1.1 anton 679:
680: (defun forth-split ()
681: (interactive)
682: (forth-split-1 "*forth*"))
683:
684: (defun forth-split-1 (buffer)
685: (if (not (eq (window-buffer) (get-buffer buffer)))
686: (progn
687: (delete-other-windows)
688: (split-window-vertically
689: (/ (* (screen-height) forth-percent-height) 100))
690: (other-window 1)
691: (switch-to-buffer buffer)
692: (goto-char (point-max))
693: (other-window 1))))
694:
695: (defun forth-reload ()
696: (interactive)
697: (let ((process (get-process forth-program-name)))
698: (if process (kill-process process t)))
699: (sleep-for-millisecs 100)
700: (forth-mode))
701:
702:
703: ;; Special section for forth-help
704:
705: (defvar forth-help-buffer "*Forth-help*"
706: "Buffer used to display the requested documentation.")
707:
708: (defvar forth-help-load-path nil
709: "List of directories to search through to find *.doc
710: (forth-help-file-suffix) files. Nil means current default directory.
711: The specified directories must contain at least one .doc file. If it
712: does not and you still want the load-path to scan that directory, create
713: an empty file dummy.doc.")
714:
715: (defvar forth-help-file-suffix "*.doc"
716: "The file names to search for in each directory.")
717:
718: (setq forth-search-command-prefix "grep -n \"^ [^(]* ")
719: (defvar forth-search-command-suffix "/dev/null")
720: (defvar forth-grep-error-regexp ": No such file or directory")
721:
722: (defun forth-function-called-at-point ()
723: "Return the space delimited word a point."
724: (save-excursion
725: (save-restriction
726: (narrow-to-region (max (point-min) (- (point) 1000)) (point-max))
727: (skip-chars-backward "^ \t\n" (point-min))
728: (if (looking-at "[ \t\n]")
729: (forward-char 1))
730: (let (obj (p (point)))
731: (skip-chars-forward "^ \t\n")
732: (buffer-substring p (point))))))
733:
734: (defun forth-help-names-extend-comp (path-list result)
735: (cond ((null path-list) result)
736: ((null (car path-list))
737: (forth-help-names-extend-comp (cdr path-list)
738: (concat result forth-help-file-suffix " ")))
739: (t (forth-help-names-extend-comp
740: (cdr path-list) (concat result
741: (expand-file-name (car path-list)) "/"
742: forth-help-file-suffix " ")))))
743:
744: (defun forth-help-names-extended ()
745: (if forth-help-load-path
746: (forth-help-names-extend-comp forth-help-load-path "")
747: (error "forth-help-load-path not specified")))
748:
749:
1.7 anton 750: ;(define-key forth-mode-map "\C-hf" 'forth-documentation)
1.1 anton 751:
752: (defun forth-documentation (function)
753: "Display the full documentation of FORTH word."
754: (interactive
755: (let ((fn (forth-function-called-at-point))
756: (enable-recursive-minibuffers t)
757: search-list
758: val)
759: (setq val (read-string (format "Describe forth word (default %s): " fn)))
760: (list (if (equal val "") fn val))))
761: (forth-get-doc (concat forth-search-command-prefix
762: (grep-regexp-quote (concat function " ("))
763: "[^)]*\-\-\" " (forth-help-names-extended)
764: forth-search-command-suffix))
765: (message "C-x C-m switches back to the forth interaction window"))
766:
767: (defun forth-get-doc (command)
768: "Display the full documentation of command."
769: (let ((curwin (get-buffer-window (window-buffer)))
770: reswin
771: pointmax)
772: (with-output-to-temp-buffer forth-help-buffer
773: (progn
774: (call-process "sh" nil forth-help-buffer t "-c" command)
775: (setq reswin (get-buffer-window forth-help-buffer))))
776: (setq reswin (get-buffer-window forth-help-buffer))
777: (select-window reswin)
778: (save-excursion
779: (goto-char (setq pointmax (point-max)))
780: (insert "--------------------\n\n"))
781: (let (fd doc)
782: (while (setq fd (forth-get-file-data pointmax))
783: (setq doc (forth-get-doc-string fd))
784: (save-excursion
785: (goto-char (point-max))
786: (insert (substring (car fd) (string-match "[^/]*$" (car fd)))
787: ":\n\n" doc "\n")))
788: (if (not doc)
789: (progn (goto-char (point-max)) (insert "Not found"))))
790: (select-window curwin)))
791:
792: (defun forth-skip-error-lines ()
793: (let ((lines 0))
794: (save-excursion
795: (while (re-search-forward forth-grep-error-regexp nil t)
796: (beginning-of-line)
797: (forward-line 1)
798: (setq lines (1+ lines))))
799: (forward-line lines)))
800:
801: (defun forth-get-doc-string (fd)
802: "Find file (car fd) and extract documentation from line (nth 1 fd)."
803: (let (result)
804: (save-window-excursion
805: (find-file (car fd))
806: (goto-line (nth 1 fd))
807: (if (not (eq (nth 1 fd) (1+ (count-lines (point-min) (point)))))
808: (error "forth-get-doc-string: serious error"))
809: (if (not (re-search-backward "\n[\t ]*\n" nil t))
810: (goto-char (point-min))
811: (goto-char (match-end 0)))
812: (let ((p (point)))
813: (if (not (re-search-forward "\n[\t ]*\n" nil t))
814: (goto-char (point-max)))
815: (setq result (buffer-substring p (point))))
816: (bury-buffer (current-buffer)))
817: result))
818:
819: (defun forth-get-file-data (limit)
820: "Parse grep output and return '(filename line#) list. Return nil when
821: passing limit."
822: (forth-skip-error-lines)
823: (if (< (point) limit)
824: (let ((result (forth-get-file-data-cont limit)))
825: (forward-line 1)
826: (beginning-of-line)
827: result)))
828:
829: (defun forth-get-file-data-cont (limit)
830: (let (result)
831: (let ((p (point)))
832: (skip-chars-forward "^:")
833: (setq result (buffer-substring p (point))))
834: (if (< (point) limit)
835: (let ((p (1+ (point))))
836: (forward-char 1)
837: (skip-chars-forward "^:")
838: (list result (string-to-int (buffer-substring p (point))))))))
839:
840: (defun grep-regexp-quote (str)
841: (let ((i 0) (m 1) (res ""))
842: (while (/= m 0)
843: (setq m (string-to-char (substring str i)))
844: (if (/= m 0)
845: (progn
846: (setq i (1+ i))
847: (if (string-match (regexp-quote (char-to-string m))
848: ".*\\^$[]")
849: (setq res (concat res "\\")))
850: (setq res (concat res (char-to-string m))))))
851: res))
852:
853:
1.9 anton 854: (define-key forth-mode-map "\C-x\C-e" 'compile)
1.1 anton 855: (define-key forth-mode-map "\C-x\C-n" 'next-error)
856: (require 'compile "compile")
857:
1.6 anton 858: (defvar forth-compile-command "gforth ")
1.9 anton 859: ;(defvar forth-compilation-window-percent-height 30)
1.1 anton 860:
861: (defun forth-compile (command)
862: (interactive (list (setq forth-compile-command (read-string "Compile command: " forth-compile-command))))
863: (forth-split-1 "*compilation*")
864: (setq ctools-compile-command command)
865: (compile1 ctools-compile-command "No more errors"))
866:
867:
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