Annotation of gforth/gforth.el, revision 1.8
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:
1.7 anton 23: ;;; $Header: /usr/local/lib/cvs-repository/src-master/gforth/gforth.el,v 1.6 1994/08/10 17:22:36 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:
1.6 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|" 'uncomment-region)
77: (define-key forth-mode-map "\C-x~" 'forth-remove-tracers)
1.1 anton 78: (define-key forth-mode-map "\e\C-m" 'forth-send-paragraph)
79: (define-key forth-mode-map "\eo" 'forth-send-buffer)
80: (define-key forth-mode-map "\C-x\C-m" 'forth-split)
81: (define-key forth-mode-map "\e " 'forth-reload)
82: (define-key forth-mode-map "\t" 'forth-indent-command)
83: (define-key forth-mode-map "\C-m" 'reindent-then-newline-and-indent)
1.7 anton 84: (define-key forth-mode-map "\M-q" 'forth-fill-paragraph)
1.1 anton 85:
86: (defvar forth-mode-syntax-table nil
87: "Syntax table in use in Forth-mode buffers.")
88:
89: (if (not forth-mode-syntax-table)
90: (progn
91: (setq forth-mode-syntax-table (make-syntax-table))
1.6 anton 92: (let ((char 0))
93: (while (< char ?!)
94: (modify-syntax-entry char " " forth-mode-syntax-table)
95: (setq char (1+ char)))
96: (while (< char 256)
97: (modify-syntax-entry char "w" forth-mode-syntax-table)
98: (setq char (1+ char))))
99: (modify-syntax-entry ?\" "\"" forth-mode-syntax-table)
100: (modify-syntax-entry ?\\ "<" forth-mode-syntax-table)
101: (modify-syntax-entry ?\n ">" forth-mode-syntax-table)
102: ))
103: ;I do not define '(' and ')' as comment delimiters, because emacs
104: ;only supports one comment syntax (and a hack to accomodate C++); I
105: ;use '\' for natural language comments and '(' for formal comments
106: ;like stack comments, so for me it's better to have emacs treat '\'
107: ;comments as comments. I you want it different, make the appropriate
108: ;changes (best in your .emacs file).
109: ;
110: ;Hmm, the C++ hack could be used to support both comment syntaxes: we
111: ;can have different comment styles, if both comments start with the
112: ;same character. we could use ' ' as first and '(' and '\' as second
113: ;character. However this would fail for G\ comments.
1.1 anton 114:
115: (defconst forth-indent-level 4
116: "Indentation of Forth statements.")
117:
118: (defun forth-mode-variables ()
119: (set-syntax-table forth-mode-syntax-table)
120: (setq local-abbrev-table forth-mode-abbrev-table)
121: (make-local-variable 'paragraph-start)
122: (setq paragraph-start (concat "^$\\|" page-delimiter))
123: (make-local-variable 'paragraph-separate)
124: (setq paragraph-separate paragraph-start)
125: (make-local-variable 'indent-line-function)
126: (setq indent-line-function 'forth-indent-line)
1.6 anton 127: ; (make-local-variable 'require-final-newline)
128: ; (setq require-final-newline t)
1.1 anton 129: (make-local-variable 'comment-start)
1.3 anton 130: (setq comment-start "\\ ")
131: ;(make-local-variable 'comment-end)
132: ;(setq comment-end " )")
1.1 anton 133: (make-local-variable 'comment-column)
134: (setq comment-column 40)
135: (make-local-variable 'comment-start-skip)
1.3 anton 136: (setq comment-start-skip "\\ ")
1.1 anton 137: (make-local-variable 'comment-indent-hook)
138: (setq comment-indent-hook 'forth-comment-indent)
139: (make-local-variable 'parse-sexp-ignore-comments)
140: (setq parse-sexp-ignore-comments t))
141:
1.2 anton 142: ;;;###autoload
1.1 anton 143: (defun forth-mode ()
144: "
145: Major mode for editing Forth code. Tab indents for Forth code. Comments
146: are delimited with ( ). Paragraphs are separated by blank lines only.
147: Delete converts tabs to spaces as it moves back.
148: \\{forth-mode-map}
149: Forth-split
150: Positions the current buffer on top and a forth-interaction window
151: below. The window size is controlled by the forth-percent-height
152: variable (see below).
153: Forth-reload
154: Reloads the forth library and restarts the forth process.
155: Forth-send-buffer
156: Sends the current buffer, in text representation, as input to the
157: forth process.
158: Forth-send-paragraph
159: Sends the previous or the current paragraph to the forth-process.
160: Note that the cursor only need to be with in the paragraph to be sent.
161: forth-documentation
162: Search for documentation of forward adjacent to cursor. Note! To use
163: this mode you have to add a line, to your .emacs file, defining the
164: directories to search through for documentation files (se variable
165: forth-help-load-path below) e.g. (setq forth-help-load-path '(nil)).
166:
167: Variables controlling interaction and startup
168: forth-percent-height
169: Tells split how high to make the edit portion, in percent of the
170: current screen height.
171: forth-program-name
172: Tells the library which program name to execute in the interation
173: window.
174:
175: Variables controlling indentation style:
176: forth-positives
177: A string containing all words which causes the indent-level of the
178: following line to be incremented.
179: OBS! Each word must be surronded by spaces.
180: forth-negatives
181: A string containing all words which causes the indentation of the
182: current line to be decremented, if the word begin the line. These
183: words also has a cancelling effect on the indent-level of the
184: following line, independent of position.
185: OBS! Each word must be surronded by spaces.
186: forth-zeroes
187: A string containing all words which causes the indentation of the
188: current line to go to zero, if the word begin the line.
189: OBS! Each word must be surronded by spaces.
190: forth-indent-level
191: Indentation increment/decrement of Forth statements.
192:
193: Note! A word which decrements the indentation of the current line, may
194: also be mentioned in forth-positives to cause the indentation to
195: resume the previous level.
196:
197: Variables controling documentation search
198: forth-help-load-path
199: List of directories to search through to find *.doc
200: (forth-help-file-suffix) files. Nil means current default directory.
201: The specified directories must contain at least one .doc file. If it
202: does not and you still want the load-path to scan that directory, create
203: an empty file dummy.doc.
204: forth-help-file-suffix
205: The file names to search for in each directory specified by
206: forth-help-load-path. Defaulted to '*.doc'.
207: "
208: (interactive)
209: (kill-all-local-variables)
210: (use-local-map forth-mode-map)
211: (setq mode-name "Forth")
212: (setq major-mode 'forth-mode)
213: (forth-mode-variables)
214: ; (if (not (forth-process-running-p))
215: ; (run-forth forth-program-name))
216: (run-hooks 'forth-mode-hook))
217:
1.6 anton 218: (setq forth-mode-hook
219: '(lambda () (setq compile-command "gforth ")))
220:
1.7 anton 221: (defun forth-fill-paragraph ()
222: "Fill comments (starting with '\'; do not fill code (block style
223: programmers who tend to fill code won't use emacs anyway:-)."
224: ; currently only comments at the start of the line are
225: ; filled. something like lisp-fill-paragraph may be better
226: (interactive)
227: (save-excursion
228: (beginning-of-line)
229: (if (looking-at "[ \t]*\\\\[ \t]+")
230: (progn (goto-char (match-end 0))
231: (set-fill-prefix)
232: (fill-paragraph nil)))))
233:
1.1 anton 234: (defun forth-comment-indent ()
235: (save-excursion
236: (beginning-of-line)
237: (if (looking-at ":[ \t]*")
238: (progn
239: (end-of-line)
240: (skip-chars-backward " \t\n")
241: (1+ (current-column)))
242: comment-column)))
243:
244: (defun forth-current-indentation ()
245: (save-excursion
246: (beginning-of-line)
247: (back-to-indentation)
248: (current-column)))
249:
250: (defun forth-delete-indentation ()
251: (let ((b nil) (m nil))
252: (save-excursion
253: (beginning-of-line)
254: (setq b (point))
255: (back-to-indentation)
256: (setq m (point)))
257: (delete-region b m)))
258:
259: (defun forth-indent-line (&optional flag)
260: "Correct indentation of the current Forth line."
261: (let ((x (forth-calculate-indent)))
262: (forth-indent-to x)))
263:
264: (defun forth-indent-command ()
265: (interactive)
266: (forth-indent-line t))
267:
268: (defun forth-indent-to (x)
269: (let ((p nil))
270: (setq p (- (current-column) (forth-current-indentation)))
271: (forth-delete-indentation)
272: (beginning-of-line)
273: (indent-to x)
274: (if (> p 0) (forward-char p))))
275:
276: ;;Calculate indent
277: (defun forth-calculate-indent ()
278: (let ((w1 nil) (indent 0) (centre 0))
279: (save-excursion
280: (beginning-of-line)
281: (skip-chars-backward " \t\n")
282: (beginning-of-line)
283: (back-to-indentation)
284: (setq indent (current-column))
285: (setq centre indent)
286: (setq indent (+ indent (forth-sum-line-indentation))))
287: (save-excursion
288: (beginning-of-line)
289: (back-to-indentation)
290: (let ((p (point)))
291: (skip-chars-forward "^ \t\n")
292: (setq w1 (buffer-substring p (point)))))
293: (if (> (- indent centre) forth-indent-level)
294: (setq indent (+ centre forth-indent-level)))
295: (if (> (- centre indent) forth-indent-level)
296: (setq indent (- centre forth-indent-level)))
297: (if (< indent 0) (setq indent 0))
298: (setq indent (- indent
299: (if (string-match
300: (regexp-quote (concat " " w1 " "))
301: forth-negatives)
302: forth-indent-level 0)))
303: (if (string-match (regexp-quote (concat " " w1 " ")) forth-zeroes)
304: (setq indent 0))
305: indent))
306:
307: (defun forth-sum-line-indentation ()
308: "Add upp the positive and negative weights of all words on the current line."
309: (let ((b (point)) (e nil) (sum 0) (w nil) (t1 nil) (t2 nil) (first t))
310: (end-of-line) (setq e (point))
311: (goto-char b)
312: (while (< (point) e)
313: (setq w (forth-next-word))
314: (setq t1 (string-match (regexp-quote (concat " " w " "))
315: forth-positives))
316: (setq t2 (string-match (regexp-quote (concat " " w " "))
317: forth-negatives))
318: (if t1
319: (setq sum (+ sum forth-indent-level)))
320: (if (and t2 (not first))
321: (setq sum (- sum forth-indent-level)))
322: (skip-chars-forward " \t")
323: (setq first nil))
324: sum))
325:
326:
327: (defun forth-next-word ()
1.6 anton 328: "Return the next forth-word. Skip anything that the forth-word takes from
329: the input stream (comments, arguments, etc.)"
330: ;actually, it would be better to use commands based on the
331: ;syntax-table or comment-start etc.
1.1 anton 332: (let ((w1 nil))
333: (while (not w1)
334: (skip-chars-forward " \t\n")
335: (let ((p (point)))
336: (skip-chars-forward "^ \t\n")
337: (setq w1 (buffer-substring p (point))))
338: (cond ((string-match "\"" w1)
339: (progn
1.6 anton 340: (skip-chars-forward "^\"\n")
341: (forward-char)))
342: ((string-match "\\\\" w1)
343: (progn
344: (end-of-line)
345: ))
346: ((or (equal "(" w1) (equal ".(" w1))
1.1 anton 347: (progn
1.6 anton 348: (skip-chars-forward "^)\n")
349: (forward-char)))
350: ((string-match (regexp-quote (concat " " w1 " ")) forth-prefixes)
351: (progn (skip-chars-forward " \t\n")
352: (skip-chars-forward "^ \t\n")))
1.1 anton 353: (t nil)))
354: w1))
355:
356:
357: ;; Forth commands
358:
1.7 anton 359: (defun forth-remove-tracers ()
360: "Remove tracers of the form `~~ '. Queries the user for each occurrence."
361: (interactive)
362: (query-replace "~~ " ""))
363:
1.5 anton 364: (defvar forth-program-name "gforth"
1.1 anton 365: "*Program invoked by the `run-forth' command.")
366:
367: (defvar forth-band-name nil
368: "*Band loaded by the `run-forth' command.")
369:
370: (defvar forth-program-arguments nil
371: "*Arguments passed to the Forth program by the `run-forth' command.")
372:
373: (defun run-forth (command-line)
374: "Run an inferior Forth process. Output goes to the buffer `*forth*'.
375: With argument, asks for a command line. Split up screen and run forth
376: in the lower portion. The current-buffer when called will stay in the
377: upper portion of the screen, and all other windows are deleted.
378: Call run-forth again to make the *forth* buffer appear in the lower
379: part of the screen."
380: (interactive
381: (list (let ((default
382: (or forth-process-command-line
383: (forth-default-command-line))))
384: (if current-prefix-arg
385: (read-string "Run Forth: " default)
386: default))))
387: (setq forth-process-command-line command-line)
388: (forth-start-process command-line)
389: (forth-split)
390: (forth-set-runlight forth-runlight:input))
391:
392: (defun reset-forth ()
393: "Reset the Forth process."
394: (interactive)
395: (let ((process (get-process forth-program-name)))
396: (cond ((or (not process)
397: (not (eq (process-status process) 'run))
398: (yes-or-no-p
399: "The Forth process is running, are you SURE you want to reset it? "))
400: (message "Resetting Forth process...")
401: (forth-reload)
402: (message "Resetting Forth process...done")))))
403:
404: (defun forth-default-command-line ()
405: (concat forth-program-name " -emacs"
406: (if forth-program-arguments
407: (concat " " forth-program-arguments)
408: "")
409: (if forth-band-name
410: (concat " -band " forth-band-name)
411: "")))
412:
413: ;;;; Internal Variables
414:
415: (defvar forth-process-command-line nil
416: "Command used to start the most recent Forth process.")
417:
418: (defvar forth-previous-send ""
419: "Most recent expression transmitted to the Forth process.")
420:
421: (defvar forth-process-filter-queue '()
422: "Queue used to synchronize filter actions properly.")
423:
424: (defvar forth-prompt "ok"
425: "The current forth prompt string.")
426:
427: (defvar forth-start-hook nil
428: "If non-nil, a procedure to call when the Forth process is started.
429: When called, the current buffer will be the Forth process-buffer.")
430:
431: (defvar forth-signal-death-message nil
432: "If non-nil, causes a message to be generated when the Forth process dies.")
433:
434: (defvar forth-percent-height 62
435: "Tells run-forth how high the upper window should be in percent.")
436:
437: (defconst forth-runlight:input ?I
438: "The character displayed when the Forth process is waiting for input.")
439:
440: (defvar forth-mode-string ""
441: "String displayed in the mode line when the Forth process is running.")
442:
443: ;;;; Evaluation Commands
444:
445: (defun forth-send-string (&rest strings)
446: "Send the string arguments to the Forth process.
447: The strings are concatenated and terminated by a newline."
448: (cond ((forth-process-running-p)
449: (forth-send-string-1 strings))
450: ((yes-or-no-p "The Forth process has died. Reset it? ")
451: (reset-forth)
452: (goto-char (point-max))
453: (forth-send-string-1 strings))))
454:
455: (defun forth-send-string-1 (strings)
456: (let ((string (apply 'concat strings)))
457: (forth-send-string-2 string)))
458:
459: (defun forth-send-string-2 (string)
460: (let ((process (get-process forth-program-name)))
461: (if (not (eq (current-buffer) (get-buffer forth-program-name)))
462: (progn
463: (forth-process-filter-output string)
464: (forth-process-filter:finish)))
465: (send-string process (concat string "\n"))
466: (if (eq (current-buffer) (process-buffer process))
467: (set-marker (process-mark process) (point)))))
468:
469:
470: (defun forth-send-region (start end)
471: "Send the current region to the Forth process.
472: The region is sent terminated by a newline."
473: (interactive "r")
474: (let ((process (get-process forth-program-name)))
475: (if (and process (eq (current-buffer) (process-buffer process)))
476: (progn (goto-char end)
477: (set-marker (process-mark process) end))))
478: (forth-send-string "\n" (buffer-substring start end) "\n"))
479:
480: (defun forth-end-of-paragraph ()
481: (if (looking-at "[\t\n ]+") (skip-chars-backward "\t\n "))
482: (if (not (re-search-forward "\n[ \t]*\n" nil t))
483: (goto-char (point-max))))
484:
485: (defun forth-send-paragraph ()
486: "Send the current or the previous paragraph to the Forth process"
487: (interactive)
488: (let (end)
489: (save-excursion
490: (forth-end-of-paragraph)
491: (skip-chars-backward "\t\n ")
492: (setq end (point))
493: (if (re-search-backward "\n[ \t]*\n" nil t)
494: (setq start (point))
495: (goto-char (point-min)))
496: (skip-chars-forward "\t\n ")
497: (forth-send-region (point) end))))
498:
499: (defun forth-send-buffer ()
500: "Send the current buffer to the Forth process."
501: (interactive)
502: (if (eq (current-buffer) (forth-process-buffer))
503: (error "Not allowed to send this buffer's contents to Forth"))
504: (forth-send-region (point-min) (point-max)))
505:
506:
507: ;;;; Basic Process Control
508:
509: (defun forth-start-process (command-line)
510: (let ((buffer (get-buffer-create "*forth*")))
511: (let ((process (get-buffer-process buffer)))
512: (save-excursion
513: (set-buffer buffer)
514: (progn (if process (delete-process process))
515: (goto-char (point-max))
516: (setq mode-line-process '(": %s"))
517: (add-to-global-mode-string 'forth-mode-string)
518: (setq process
519: (apply 'start-process
520: (cons forth-program-name
521: (cons buffer
522: (forth-parse-command-line
523: command-line)))))
524: (set-marker (process-mark process) (point-max))
525: (forth-process-filter-initialize t)
526: (forth-modeline-initialize)
527: (set-process-sentinel process 'forth-process-sentinel)
528: (set-process-filter process 'forth-process-filter)
529: (run-hooks 'forth-start-hook)))
530: buffer)))
531:
532: (defun forth-parse-command-line (string)
533: (setq string (substitute-in-file-name string))
534: (let ((start 0)
535: (result '()))
536: (while start
537: (let ((index (string-match "[ \t]" string start)))
538: (setq start
539: (cond ((not index)
540: (setq result
541: (cons (substring string start)
542: result))
543: nil)
544: ((= index start)
545: (string-match "[^ \t]" string start))
546: (t
547: (setq result
548: (cons (substring string start index)
549: result))
550: (1+ index))))))
551: (nreverse result)))
552:
553:
554: (defun forth-process-running-p ()
555: "True iff there is a Forth process whose status is `run'."
556: (let ((process (get-process forth-program-name)))
557: (and process
558: (eq (process-status process) 'run))))
559:
560: (defun forth-process-buffer ()
561: (let ((process (get-process forth-program-name)))
562: (and process (process-buffer process))))
563:
564: ;;;; Process Filter
565:
566: (defun forth-process-sentinel (proc reason)
567: (let ((inhibit-quit nil))
568: (forth-process-filter-initialize (eq reason 'run))
569: (if (eq reason 'run)
570: (forth-modeline-initialize)
571: (setq forth-mode-string "")))
572: (if (and (not (memq reason '(run stop)))
573: forth-signal-death-message)
574: (progn (beep)
575: (message
576: "The Forth process has died! Do M-x reset-forth to restart it"))))
577:
578: (defun forth-process-filter-initialize (running-p)
579: (setq forth-process-filter-queue (cons '() '()))
580: (setq forth-prompt "ok"))
581:
582:
583: (defun forth-process-filter (proc string)
584: (forth-process-filter-output string)
585: (forth-process-filter:finish))
586:
587: (defun forth-process-filter:enqueue (action)
588: (let ((next (cons action '())))
589: (if (cdr forth-process-filter-queue)
590: (setcdr (cdr forth-process-filter-queue) next)
591: (setcar forth-process-filter-queue next))
592: (setcdr forth-process-filter-queue next)))
593:
594: (defun forth-process-filter:finish ()
595: (while (car forth-process-filter-queue)
596: (let ((next (car forth-process-filter-queue)))
597: (setcar forth-process-filter-queue (cdr next))
598: (if (not (cdr next))
599: (setcdr forth-process-filter-queue '()))
600: (apply (car (car next)) (cdr (car next))))))
601:
602: ;;;; Process Filter Output
603:
604: (defun forth-process-filter-output (&rest args)
605: (if (not (and args
606: (null (cdr args))
607: (stringp (car args))
608: (string-equal "" (car args))))
609: (forth-process-filter:enqueue
610: (cons 'forth-process-filter-output-1 args))))
611:
612: (defun forth-process-filter-output-1 (&rest args)
613: (save-excursion
614: (forth-goto-output-point)
615: (apply 'insert-before-markers args)))
616:
617: (defun forth-guarantee-newlines (n)
618: (save-excursion
619: (forth-goto-output-point)
620: (let ((stop nil))
621: (while (and (not stop)
622: (bolp))
623: (setq n (1- n))
624: (if (bobp)
625: (setq stop t)
626: (backward-char))))
627: (forth-goto-output-point)
628: (while (> n 0)
629: (insert-before-markers ?\n)
630: (setq n (1- n)))))
631:
632: (defun forth-goto-output-point ()
633: (let ((process (get-process forth-program-name)))
634: (set-buffer (process-buffer process))
635: (goto-char (process-mark process))))
636:
637: (defun forth-modeline-initialize ()
638: (setq forth-mode-string " "))
639:
640: (defun forth-set-runlight (runlight)
641: (aset forth-mode-string 0 runlight)
642: (forth-modeline-redisplay))
643:
644: (defun forth-modeline-redisplay ()
645: (save-excursion (set-buffer (other-buffer)))
646: (set-buffer-modified-p (buffer-modified-p))
647: (sit-for 0))
648:
649: ;;;; Process Filter Operations
650:
651: (defun add-to-global-mode-string (x)
652: (cond ((null global-mode-string)
653: (setq global-mode-string (list "" x " ")))
654: ((not (memq x global-mode-string))
655: (setq global-mode-string
656: (cons ""
657: (cons x
658: (cons " "
659: (if (equal "" (car global-mode-string))
660: (cdr global-mode-string)
661: global-mode-string))))))))
662:
663:
664: ;; Misc
665:
666: (setq auto-mode-alist (append auto-mode-alist
1.4 pazsan 667: '(("\\.fs$" . forth-mode))))
1.1 anton 668:
669: (defun forth-split ()
670: (interactive)
671: (forth-split-1 "*forth*"))
672:
673: (defun forth-split-1 (buffer)
674: (if (not (eq (window-buffer) (get-buffer buffer)))
675: (progn
676: (delete-other-windows)
677: (split-window-vertically
678: (/ (* (screen-height) forth-percent-height) 100))
679: (other-window 1)
680: (switch-to-buffer buffer)
681: (goto-char (point-max))
682: (other-window 1))))
683:
684: (defun forth-reload ()
685: (interactive)
686: (let ((process (get-process forth-program-name)))
687: (if process (kill-process process t)))
688: (sleep-for-millisecs 100)
689: (forth-mode))
690:
691:
692: ;; Special section for forth-help
693:
694: (defvar forth-help-buffer "*Forth-help*"
695: "Buffer used to display the requested documentation.")
696:
697: (defvar forth-help-load-path nil
698: "List of directories to search through to find *.doc
699: (forth-help-file-suffix) files. Nil means current default directory.
700: The specified directories must contain at least one .doc file. If it
701: does not and you still want the load-path to scan that directory, create
702: an empty file dummy.doc.")
703:
704: (defvar forth-help-file-suffix "*.doc"
705: "The file names to search for in each directory.")
706:
707: (setq forth-search-command-prefix "grep -n \"^ [^(]* ")
708: (defvar forth-search-command-suffix "/dev/null")
709: (defvar forth-grep-error-regexp ": No such file or directory")
710:
711: (defun forth-function-called-at-point ()
712: "Return the space delimited word a point."
713: (save-excursion
714: (save-restriction
715: (narrow-to-region (max (point-min) (- (point) 1000)) (point-max))
716: (skip-chars-backward "^ \t\n" (point-min))
717: (if (looking-at "[ \t\n]")
718: (forward-char 1))
719: (let (obj (p (point)))
720: (skip-chars-forward "^ \t\n")
721: (buffer-substring p (point))))))
722:
723: (defun forth-help-names-extend-comp (path-list result)
724: (cond ((null path-list) result)
725: ((null (car path-list))
726: (forth-help-names-extend-comp (cdr path-list)
727: (concat result forth-help-file-suffix " ")))
728: (t (forth-help-names-extend-comp
729: (cdr path-list) (concat result
730: (expand-file-name (car path-list)) "/"
731: forth-help-file-suffix " ")))))
732:
733: (defun forth-help-names-extended ()
734: (if forth-help-load-path
735: (forth-help-names-extend-comp forth-help-load-path "")
736: (error "forth-help-load-path not specified")))
737:
738:
1.7 anton 739: ;(define-key forth-mode-map "\C-hf" 'forth-documentation)
1.1 anton 740:
741: (defun forth-documentation (function)
742: "Display the full documentation of FORTH word."
743: (interactive
744: (let ((fn (forth-function-called-at-point))
745: (enable-recursive-minibuffers t)
746: search-list
747: val)
748: (setq val (read-string (format "Describe forth word (default %s): " fn)))
749: (list (if (equal val "") fn val))))
750: (forth-get-doc (concat forth-search-command-prefix
751: (grep-regexp-quote (concat function " ("))
752: "[^)]*\-\-\" " (forth-help-names-extended)
753: forth-search-command-suffix))
754: (message "C-x C-m switches back to the forth interaction window"))
755:
756: (defun forth-get-doc (command)
757: "Display the full documentation of command."
758: (let ((curwin (get-buffer-window (window-buffer)))
759: reswin
760: pointmax)
761: (with-output-to-temp-buffer forth-help-buffer
762: (progn
763: (call-process "sh" nil forth-help-buffer t "-c" command)
764: (setq reswin (get-buffer-window forth-help-buffer))))
765: (setq reswin (get-buffer-window forth-help-buffer))
766: (select-window reswin)
767: (save-excursion
768: (goto-char (setq pointmax (point-max)))
769: (insert "--------------------\n\n"))
770: (let (fd doc)
771: (while (setq fd (forth-get-file-data pointmax))
772: (setq doc (forth-get-doc-string fd))
773: (save-excursion
774: (goto-char (point-max))
775: (insert (substring (car fd) (string-match "[^/]*$" (car fd)))
776: ":\n\n" doc "\n")))
777: (if (not doc)
778: (progn (goto-char (point-max)) (insert "Not found"))))
779: (select-window curwin)))
780:
781: (defun forth-skip-error-lines ()
782: (let ((lines 0))
783: (save-excursion
784: (while (re-search-forward forth-grep-error-regexp nil t)
785: (beginning-of-line)
786: (forward-line 1)
787: (setq lines (1+ lines))))
788: (forward-line lines)))
789:
790: (defun forth-get-doc-string (fd)
791: "Find file (car fd) and extract documentation from line (nth 1 fd)."
792: (let (result)
793: (save-window-excursion
794: (find-file (car fd))
795: (goto-line (nth 1 fd))
796: (if (not (eq (nth 1 fd) (1+ (count-lines (point-min) (point)))))
797: (error "forth-get-doc-string: serious error"))
798: (if (not (re-search-backward "\n[\t ]*\n" nil t))
799: (goto-char (point-min))
800: (goto-char (match-end 0)))
801: (let ((p (point)))
802: (if (not (re-search-forward "\n[\t ]*\n" nil t))
803: (goto-char (point-max)))
804: (setq result (buffer-substring p (point))))
805: (bury-buffer (current-buffer)))
806: result))
807:
808: (defun forth-get-file-data (limit)
809: "Parse grep output and return '(filename line#) list. Return nil when
810: passing limit."
811: (forth-skip-error-lines)
812: (if (< (point) limit)
813: (let ((result (forth-get-file-data-cont limit)))
814: (forward-line 1)
815: (beginning-of-line)
816: result)))
817:
818: (defun forth-get-file-data-cont (limit)
819: (let (result)
820: (let ((p (point)))
821: (skip-chars-forward "^:")
822: (setq result (buffer-substring p (point))))
823: (if (< (point) limit)
824: (let ((p (1+ (point))))
825: (forward-char 1)
826: (skip-chars-forward "^:")
827: (list result (string-to-int (buffer-substring p (point))))))))
828:
829: (defun grep-regexp-quote (str)
830: (let ((i 0) (m 1) (res ""))
831: (while (/= m 0)
832: (setq m (string-to-char (substring str i)))
833: (if (/= m 0)
834: (progn
835: (setq i (1+ i))
836: (if (string-match (regexp-quote (char-to-string m))
837: ".*\\^$[]")
838: (setq res (concat res "\\")))
839: (setq res (concat res (char-to-string m))))))
840: res))
841:
842:
843: (define-key forth-mode-map "\C-x\C-e" 'forth-compile)
844: (define-key forth-mode-map "\C-x\C-n" 'next-error)
845: (require 'compile "compile")
846:
1.6 anton 847: (defvar forth-compile-command "gforth ")
1.1 anton 848: (defvar forth-compilation-window-percent-height 30)
849:
850: (defun forth-compile (command)
851: (interactive (list (setq forth-compile-command (read-string "Compile command: " forth-compile-command))))
852: (forth-split-1 "*compilation*")
853: (setq ctools-compile-command command)
854: (compile1 ctools-compile-command "No more errors"))
855:
856:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to gforth.el CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [gforth] / gforth