1: ;;; gforth.el --- major mode for editing (G)Forth sources
2:
3: ;; Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.
4:
5: ;; This file is part of Gforth.
6:
7: ;; GForth is distributed in the hope that it will be useful,
8: ;; but WITHOUT ANY WARRANTY. No author or distributor
9: ;; accepts responsibility to anyone for the consequences of using it
10: ;; or for whether it serves any particular purpose or works at all,
11: ;; unless he says so in writing. Refer to the GNU Emacs General Public
12: ;; License for full details.
13:
14: ;; Everyone is granted permission to copy, modify and redistribute
15: ;; GNU Emacs, but only under the conditions described in the
16: ;; GNU Emacs General Public License. A copy of this license is
17: ;; supposed to have been given to you along with Gforth so you
18: ;; can know your rights and responsibilities. It should be in a
19: ;; file named COPYING. Among other things, the copyright notice
20: ;; and this notice must be preserved on all copies.
21:
22: ;; Author: Goran Rydqvist <gorry@ida.liu.se>
23: ;; Maintainer: David Kühling <dvdkhlng@gmx.de>
24: ;; Created: 16 July 88 by Goran Rydqvist
25: ;; Keywords: forth, gforth
26:
27: ;; Changes by anton
28: ;; This is a variant of forth.el that came with TILE.
29: ;; I left most of this stuff untouched and made just a few changes for
30: ;; the things I use (mainly indentation and syntax tables).
31: ;; So there is still a lot of work to do to adapt this to gforth.
32:
33: ;; Changes by David
34: ;; Added a syntax-hilighting engine, rewrote auto-indentation engine.
35: ;; Added support for block files.
36:
37: ;;-------------------------------------------------------------------
38: ;; A Forth indentation, documentation search and interaction library
39: ;;-------------------------------------------------------------------
40: ;;
41: ;; Written by Goran Rydqvist, gorry@ida.liu.se, Summer 1988
42: ;; Started: 16 July 88
43: ;; Version: 2.10
44: ;; Last update: 5 December 1989 by Mikael Patel, mip@ida.liu.se
45: ;; Last update: 25 June 1990 by Goran Rydqvist, gorry@ida.liu.se
46: ;;
47: ;; Documentation: See forth-mode (^HF forth-mode)
48: ;;-------------------------------------------------------------------
49:
50: ;;; Code:
51:
52:
53:
54: ;;; Hilighting and indentation engine (dk)
55: ;;;
56:
57: (defvar forth-words nil
58: "List of words for hilighting and recognition of parsed text areas.
59: You can enable hilighting of object-oriented Forth code, by appending either
60: `forth-objects-words' or `forth-oof-words' to the list, depending on which
61: OOP package you're using. After `forth-words' changed, `forth-compile-words'
62: must be called to make the changes take effect.
63:
64: Each item of `forth-words' has the form
65: (MATCHER TYPE HILIGHT . &optional PARSED-TEXT ...)
66:
67: MATCHER is either a list of strings to match, or a REGEXP.
68: If it's a REGEXP, it should not be surrounded by '\\<' or '\\>', since
69: that'll be done automatically by the search routines.
70:
71: TYPE should be one of 'definiton-starter', 'definition-ender', 'compile-only',
72: 'immediate' or 'non-immediate'. Those information are required to determine
73: whether a word actually parses (and whether that parsed text needs to be
74: hilighted).
75:
76: HILIGHT is a cons cell of the form (FACE . MINIMUM-LEVEL)
77: Where MINIMUM-LEVEL specifies the minimum value of `forth-hilight-level',
78: that's required for matching text to be hilighted.
79:
80: PARSED-TEXT specifies whether and how a word parses following text. You can
81: specify as many subsequent PARSED-TEXT as you wish, but that shouldn't be
82: necessary very often. It has the following form:
83: (DELIM-REGEXP SKIP-LEADING-FLAG PARSED-TYPE HILIGHT)
84:
85: DELIM-REGEXP is a regular expression that should match strings of length 1,
86: which are delimiters for the parsed text.
87:
88: A non-nil value for PARSE-LEADING-FLAG means, that leading delimiter strings
89: before parsed text should be skipped. This is the parsing behaviour of the
90: Forth word WORD. Set it to t for name-parsing words, nil for comments and
91: strings.
92:
93: PARSED-TYPE specifies what kind of text is parsed. It should be on of 'name',
94: 'string' or 'comment'.")
95: (setq forth-words
96: '(
97: (("[") definition-ender (font-lock-keyword-face . 1))
98: (("]" "]l") definition-starter (font-lock-keyword-face . 1))
99: ((":") definition-starter (font-lock-keyword-face . 1)
100: "[ \t\n]" t name (font-lock-function-name-face . 3))
101: (("immediate" "compile-only" "restrict")
102: immediate (font-lock-keyword-face . 1))
103: (("does>") compile-only (font-lock-keyword-face . 1))
104: ((":noname") definition-starter (font-lock-keyword-face . 1))
105: ((";" ";code") definition-ender (font-lock-keyword-face . 1))
106: (("include" "require" "needs" "use")
107: non-immediate (font-lock-keyword-face . 1)
108: "[\n\t ]" t string (font-lock-string-face . 1))
109: (("included" "required" "thru" "load")
110: non-immediate (font-lock-keyword-face . 1))
111: (("[char]") compile-only (font-lock-keyword-face . 1)
112: "[ \t\n]" t string (font-lock-string-face . 1))
113: (("char") non-immediate (font-lock-keyword-face . 1)
114: "[ \t\n]" t string (font-lock-string-face . 1))
115: (("s\"" "c\"") immediate (font-lock-string-face . 1)
116: "[\"\n]" nil string (font-lock-string-face . 1))
117: ((".\"") compile-only (font-lock-string-face . 1)
118: "[\"\n]" nil string (font-lock-string-face . 1))
119: (("abort\"") compile-only (font-lock-keyword-face . 1)
120: "[\"\n]" nil string (font-lock-string-face . 1))
121: (("{") compile-only (font-lock-variable-name-face . 1)
122: "[\n}]" nil name (font-lock-variable-name-face . 1))
123: ((".(" "(") immediate (font-lock-comment-face . 1)
124: ")" nil comment (font-lock-comment-face . 1))
125: (("\\" "\\G") immediate (font-lock-comment-face . 1)
126: "[\n]" nil comment (font-lock-comment-face . 1))
127:
128: (("[if]" "[?do]" "[do]" "[for]" "[begin]"
129: "[endif]" "[then]" "[loop]" "[+loop]" "[next]" "[until]" "[repeat]"
130: "[again]" "[while]" "[else]")
131: immediate (font-lock-keyword-face . 2))
132: (("[ifdef]" "[ifundef]") immediate (font-lock-keyword-face . 2)
133: "[ \t\n]" t name (font-lock-function-name-face . 3))
134: (("if" "begin" "ahead" "do" "?do" "+do" "u+do" "-do" "u-do" "for"
135: "case" "of" "?dup-if" "?dup-0=-if" "then" "until" "repeat" "again"
136: "loop" "+loop" "-loop" "next" "endcase" "endof" "else" "while" "try"
137: "recover" "endtry" "assert(" "assert0(" "assert1(" "assert2("
138: "assert3(" ")" "<interpretation" "<compilation" "interpretation>"
139: "compilation>")
140: compile-only (font-lock-keyword-face . 2))
141:
142: (("true" "false" "c/l" "bl" "cell" "pi" "w/o" "r/o" "r/w")
143: non-immediate (font-lock-constant-face . 2))
144: (("~~") compile-only (font-lock-warning-face . 2))
145: (("postpone" "[is]" "defers" "[']" "[compile]")
146: compile-only (font-lock-keyword-face . 2)
147: "[ \t\n]" t name (font-lock-function-name-face . 3))
148: (("is" "what's") immediate (font-lock-keyword-face . 2)
149: "[ \t\n]" t name (font-lock-function-name-face . 3))
150: (("<is>" "'") non-immediate (font-lock-keyword-face . 2)
151: "[ \t\n]" t name (font-lock-function-name-face . 3))
152: (("[to]") compile-only (font-lock-keyword-face . 2)
153: "[ \t\n]" t name (font-lock-variable-name-face . 3))
154: (("to") immediate (font-lock-keyword-face . 2)
155: "[ \t\n]" t name (font-lock-variable-name-face . 3))
156: (("<to>") non-immediate (font-lock-keyword-face . 2)
157: "[ \t\n]" t name (font-lock-variable-name-face . 3))
158:
159: (("create" "variable" "constant" "2variable" "2constant" "fvariable"
160: "fconstant" "value" "field" "user" "vocabulary"
161: "create-interpret/compile")
162: non-immediate (font-lock-type-face . 2)
163: "[ \t\n]" t name (font-lock-variable-name-face . 3))
164: (("defer" "alias" "create-interpret/compile:")
165: non-immediate (font-lock-type-face . 1)
166: "[ \t\n]" t name (font-lock-function-name-face . 3))
167: (("end-struct") non-immediate (font-lock-keyword-face . 2)
168: "[ \t\n]" t name (font-lock-type-face . 3))
169: (("struct") non-immediate (font-lock-keyword-face . 2))
170: ("-?[0-9]+\\(\\.[0-9]*e\\(-?[0-9]+\\)?\\|\\.?[0-9a-f]*\\)"
171: immediate (font-lock-constant-face . 3))
172: ))
173:
174: (defvar forth-use-objects nil
175: "*Non-nil makes forth-mode also hilight words from the \"Objects\" package.")
176: (defvar forth-objects-words nil
177: "Hilighting description for words of the \"Objects\" package")
178: (setq forth-objects-words
179: '(((":m") definition-starter (font-lock-keyword-face . 1)
180: "[ \t\n]" t name (font-lock-function-name-face . 3))
181: (("m:") definition-starter (font-lock-keyword-face . 1))
182: ((";m") definition-ender (font-lock-keyword-face . 1))
183: (("[current]" "[parent]") compile-only (font-lock-keyword-face . 1)
184: "[ \t\n]" t name (font-lock-function-name-face . 3))
185: (("current" "overrides") non-immediate (font-lock-keyword-face . 2)
186: "[ \t\n]" t name (font-lock-function-name-face . 3))
187: (("[to-inst]") compile-only (font-lock-keyword-face . 2)
188: "[ \t\n]" t name (font-lock-variable-name-face . 3))
189: (("[bind]") compile-only (font-lock-keyword-face . 2)
190: "[ \t\n]" t name (font-lock-type-face . 3)
191: "[ \t\n]" t name (font-lock-function-name-face . 3))
192: (("bind") non-immediate (font-lock-keyword-face . 2)
193: "[ \t\n]" t name (font-lock-type-face . 3)
194: "[ \t\n]" t name (font-lock-function-name-face . 3))
195: (("inst-var" "inst-value") non-immediate (font-lock-type-face . 2)
196: "[ \t\n]" t name (font-lock-variable-name-face . 3))
197: (("method" "selector")
198: non-immediate (font-lock-type-face . 1)
199: "[ \t\n]" t name (font-lock-function-name-face . 3))
200: (("end-class" "end-interface")
201: non-immediate (font-lock-keyword-face . 2)
202: "[ \t\n]" t name (font-lock-type-face . 3))
203: (("public" "protected" "class" "exitm" "implementation" "interface"
204: "methods" "end-methods" "this")
205: non-immediate (font-lock-keyword-face . 2))
206: (("object") non-immediate (font-lock-type-face . 2))))
207:
208: (defvar forth-use-oof nil
209: "*Non-nil makes forth-mode also hilight words from the \"OOF\" package.")
210: (defvar forth-oof-words nil
211: "Hilighting description for words of the \"OOF\" package")
212: (setq forth-oof-words
213: '((("class") non-immediate (font-lock-keyword-face . 2)
214: "[ \t\n]" t name (font-lock-type-face . 3))
215: (("var") non-immediate (font-lock-type-face . 2)
216: "[ \t\n]" t name (font-lock-variable-name-face . 3))
217: (("method") non-immediate (font-lock-type-face . 2)
218: "[ \t\n]" t name (font-lock-function-name-face . 3))
219: (("::" "super" "bind" "bound" "link")
220: immediate (font-lock-keyword-face . 2)
221: "[ \t\n]" t name (font-lock-function-name-face . 3))
222: (("ptr" "asptr" "[]")
223: immediate (font-lock-keyword-face . 2)
224: "[ \t\n]" t name (font-lock-variable-name-face . 3))
225: (("class;" "how:" "self" "new" "new[]" "definitions" "class?" "with"
226: "endwith")
227: non-immediate (font-lock-keyword-face . 2))
228: (("object") non-immediate (font-lock-type-face . 2))))
229:
230: (defvar forth-local-words nil
231: "List of Forth words to prepend to `forth-words'. Should be set by a
232: forth source, using a local variables list at the end of the file
233: (\"Local Variables: ... forth-local-words: ... End:\" construct).")
234:
235: (defvar forth-custom-words nil
236: "List of Forth words to prepend to `forth-words'. Should be set in your
237: .emacs.")
238:
239: (defvar forth-hilight-level 3 "*Level of hilighting of Forth code.")
240:
241: (defvar forth-compiled-words nil "Compiled representation of `forth-words'.")
242:
243:
244: ; todo:
245: ;
246:
247: ; Wörter ordentlich hilighten, die nicht auf whitespace beginning ( ..)IF
248: ; Additional `forth-use-objects' or
249: ; `forth-use-oof' could be set to non-nil for automatical adding of those
250: ; word-lists. Using local variable list?
251: ;
252: ; Konfiguration über customization groups
253: ;
254: ; Bereich nur auf Wortanfang/ende ausweiten, wenn anfang bzw ende in einem
255: ; Wort liegen (?) -- speed!
256: ;
257: ; User interface
258: ;
259: ; 'forth-word' property muss eindeutig sein!
260: ;
261: ; imenu support schlauer machen
262:
263: (setq debug-on-error t)
264:
265: ;; Filter list by predicate. This is a somewhat standard function for
266: ;; functional programming languages. So why isn't it already implemented
267: ;; in Lisp??
268: (defun forth-filter (predicate list)
269: (let ((filtered nil))
270: (mapcar (lambda (item)
271: (when (funcall predicate item)
272: (if filtered
273: (nconc filtered (list item))
274: (setq filtered (cons item nil))))
275: nil) list)
276: filtered))
277:
278: ;; Helper function for `forth-compile-word': return whether word has to be
279: ;; added to the compiled word list, for syntactic parsing and hilighting.
280: (defun forth-words-filter (word)
281: (let* ((hilight (nth 2 word))
282: (level (cdr hilight))
283: (parsing-flag (nth 3 word)))
284: (or parsing-flag
285: (<= level forth-hilight-level))))
286:
287: ;; Helper function for `forth-compile-word': translate one entry from
288: ;; `forth-words' into the form (regexp regexp-depth word-description)
289: (defun forth-compile-words-mapper (word)
290: (let* ((matcher (car word))
291: (regexp (if (stringp matcher) (concat "\\(" matcher "\\)")
292: (if (listp matcher) (regexp-opt matcher t)
293: (error "Invalid matcher (stringp or listp expected `%s'"
294: matcher))))
295: (depth (regexp-opt-depth regexp))
296: (description (cdr word)))
297: (list regexp depth description)))
298:
299: ;; Read `words' and create a compiled representation suitable for efficient
300: ;; parsing of the form
301: ;; (regexp (subexp-count word-description) (subexp-count2 word-description2)
302: ;; ...)
303: (defun forth-compile-wordlist (words)
304: (let* ((mapped (mapcar 'forth-compile-words-mapper words))
305: (regexp (concat "\\<\\("
306: (mapconcat 'car mapped "\\|")
307: "\\)\\>"))
308: (sub-count 2)
309: (sub-list (mapcar
310: (lambda (i)
311: (let ((sub (cons sub-count (nth 2 i))))
312: (setq sub-count (+ sub-count (nth 1 i)))
313: sub
314: ))
315: mapped)))
316: (let ((result (cons regexp sub-list)))
317: (byte-compile 'result)
318: result)))
319:
320: (defun forth-compile-words ()
321: "Compile the the words from `forth-words' and `forth-indent-words' into
322: the format that's later used for doing the actual hilighting/indentation.
323: Store the resulting compiled wordlists in `forth-compiled-words' and
324: `forth-compiled-indent-words', respective"
325: (setq forth-compiled-words
326: (forth-compile-wordlist
327: (forth-filter 'forth-words-filter forth-words)))
328: (setq forth-compiled-indent-words
329: (forth-compile-wordlist forth-indent-words)))
330:
331: (defun forth-hack-local-variables ()
332: "Parse and bind local variables, set in the contents of the current
333: forth-mode buffer. Prepend `forth-local-words' to `forth-words' and
334: `forth-local-indent-words' to `forth-indent-words'."
335: (hack-local-variables)
336: (setq forth-words (append forth-local-words forth-words))
337: (setq forth-indent-words (append forth-local-indent-words
338: forth-indent-words)))
339:
340: (defun forth-customize-words ()
341: "Add the words from `forth-custom-words' and `forth-custom-indent-words'
342: to `forth-words' and `forth-indent-words', respective. Add
343: `forth-objects-words' and/or `forth-oof-words' to `forth-words', if
344: `forth-use-objects' and/or `forth-use-oof', respective is set."
345: (setq forth-words (append forth-custom-words forth-words
346: (if forth-use-oof forth-oof-words nil)
347: (if forth-use-objects forth-objects-words nil)))
348: (setq forth-indent-words (append
349: forth-custom-indent-words forth-indent-words)))
350:
351:
352:
353: ;; get location of first character of previous forth word that's got
354: ;; properties
355: (defun forth-previous-start (pos)
356: (let* ((word (get-text-property pos 'forth-word))
357: (prev (previous-single-property-change
358: (min (point-max) (1+ pos)) 'forth-word
359: (current-buffer) (point-min))))
360: (if (or (= (point-min) prev) word) prev
361: (if (get-text-property (1- prev) 'forth-word)
362: (previous-single-property-change
363: prev 'forth-word (current-buffer) (point-min))
364: (point-min)))))
365:
366: ;; Get location of the last character of the current/next forth word that's
367: ;; got properties, text that's parsed by the word is considered as parts of
368: ;; the word.
369: (defun forth-next-end (pos)
370: (let* ((word (get-text-property pos 'forth-word))
371: (next (next-single-property-change pos 'forth-word
372: (current-buffer) (point-max))))
373: (if word next
374: (if (get-text-property next 'forth-word)
375: (next-single-property-change
376: next 'forth-word (current-buffer) (point-max))
377: (point-max)))))
378:
379: (defun forth-next-whitespace (pos)
380: (save-excursion
381: (goto-char pos)
382: (skip-syntax-forward "-" (point-max))
383: (point)))
384: (defun forth-previous-word (pos)
385: (save-excursion
386: (goto-char pos)
387: (re-search-backward "\\<" pos (point-min) 1)
388: (point)))
389:
390: ;; Delete all properties, used by Forth mode, from `from' to `to'.
391: (defun forth-delete-properties (from to)
392: (remove-text-properties
393: from to '(face nil forth-parsed nil forth-word nil forth-state nil)))
394:
395: ;; Get the index of the branch of the most recently evaluated regular
396: ;; expression that matched. (used for identifying branches "a\\|b\\|c...")
397: (defun forth-get-regexp-branch ()
398: (let ((count 2))
399: (while (not (match-beginning count))
400: (setq count (1+ count)))
401: count))
402:
403: ;; seek to next forth-word and return its "word-description"
404: (defun forth-next-known-forth-word (to)
405: (if (<= (point) to)
406: (progn
407: (let* ((regexp (car forth-compiled-words))
408: (pos (re-search-forward regexp to t)))
409: (if pos (let ((branch (forth-get-regexp-branch))
410: (descr (cdr forth-compiled-words)))
411: (goto-char (match-beginning 0))
412: (cdr (assoc branch descr)))
413: 'nil)))
414: nil))
415:
416: ;; Set properties of forth word at `point', eventually parsing subsequent
417: ;; words, and parsing all whitespaces. Set point to delimiter after word.
418: ;; The word, including it's parsed text gets the `forth-word' property, whose
419: ;; value is unique, and may be used for getting the word's start/end
420: ;; positions.
421: (defun forth-set-word-properties (state data)
422: (let* ((start (point))
423: (end (progn (re-search-forward "[ \t]\\|$" (point-max) 1)
424: (point)))
425: (type (car data))
426: (hilight (nth 1 data))
427: (bad-word (and (not state) (eq type 'compile-only)))
428: (hlface (if bad-word font-lock-warning-face
429: (if (<= (cdr hilight) forth-hilight-level)
430: (car hilight) nil))))
431: (when hlface (put-text-property start end 'face hlface))
432: ;; if word parses in current state, process parsed range of text
433: (when (or (not state) (eq type 'compile-only) (eq type 'immediate))
434: (let ((parse-data (nthcdr 2 data)))
435: (while parse-data
436: (let ((delim (nth 0 parse-data))
437: (skip-leading (nth 1 parse-data))
438: (parse-type (nth 2 parse-data))
439: (parsed-hilight (nth 3 parse-data))
440: (parse-start (point))
441: (parse-end))
442: (when skip-leading
443: (while (and (looking-at delim) (> (match-end 0) (point))
444: (not (looking-at "\n")))
445: (forward-char)))
446: (re-search-forward delim (point-max) 1)
447: (setq parse-end (point))
448: (forth-delete-properties end parse-end)
449: (when (<= (cdr parsed-hilight) forth-hilight-level)
450: (put-text-property
451: parse-start parse-end 'face (car parsed-hilight)))
452: (put-text-property
453: parse-start parse-end 'forth-parsed parse-type)
454: (setq end parse-end)
455: (setq parse-data (nthcdr 4 parse-data))))))
456: (put-text-property start end 'forth-word start)))
457:
458: ;; Search for known Forth words in the range `from' to `to', using
459: ;; `forth-next-known-forth-word' and set their properties via
460: ;; `forth-set-word-properties'.
461: (defun forth-update-properties (from to &optional loudly)
462: (save-excursion
463: (let ((msg-count 0) (state) (word-descr) (last-location))
464: (goto-char (forth-previous-word (forth-previous-start
465: (max (point-min) (1- from)))))
466: (setq to (forth-next-end (min (point-max) (1+ to))))
467: ;; `to' must be on a space delimiter, if a parsing word was changed
468: (setq to (forth-next-whitespace to))
469: (setq state (get-text-property (point) 'forth-state))
470: (setq last-location (point))
471: (forth-delete-properties (point) to)
472: ;; hilight loop...
473: (while (setq word-descr (forth-next-known-forth-word to))
474: (when loudly
475: (when (equal 0 (% msg-count 100))
476: (message "Parsing Forth code...%s"
477: (make-string (/ msg-count 100) ?.)))
478: (setq msg-count (1+ msg-count)))
479: (forth-set-word-properties state word-descr)
480: (when state (put-text-property last-location (point) 'forth-state t))
481: (let ((type (car word-descr)))
482: (if (eq type 'definition-starter) (setq state t))
483: (if (eq type 'definition-ender) (setq state nil))
484: (setq last-location (point))))
485: ;; update state property up to `to'
486: (if (and state (< (point) to))
487: (put-text-property last-location to 'forth-state t))
488: ;; extend search if following state properties differ from current state
489: (if (< to (point-max))
490: (if (not (equal state (get-text-property (1+ to) 'forth-state)))
491: (let ((extend-to (next-single-property-change
492: to 'forth-state (current-buffer) (point-max))))
493: (forth-update-properties to extend-to))
494: ))
495: )))
496:
497: ;; save-buffer-state borrowed from `font-lock.el'
498: (eval-when-compile
499: (defmacro forth-save-buffer-state (varlist &rest body)
500: "Bind variables according to VARLIST and eval BODY restoring buffer state."
501: (` (let* ((,@ (append varlist
502: '((modified (buffer-modified-p)) (buffer-undo-list t)
503: (inhibit-read-only t) (inhibit-point-motion-hooks t)
504: before-change-functions after-change-functions
505: deactivate-mark buffer-file-name buffer-file-truename))))
506: (,@ body)
507: (when (and (not modified) (buffer-modified-p))
508: (set-buffer-modified-p nil))))))
509:
510: ;; Function that is added to the `change-functions' hook. Calls
511: ;; `forth-update-properties' and keeps care of disabling undo information
512: ;; and stuff like that.
513: (defun forth-change-function (from to len &optional loudly)
514: (save-match-data
515: (forth-save-buffer-state ()
516: (unwind-protect
517: (progn
518: (forth-update-properties from to loudly)
519: (forth-update-show-screen)
520: (forth-update-warn-long-lines))))))
521:
522: (eval-when-compile
523: (byte-compile 'forth-set-word-properties)
524: (byte-compile 'forth-next-known-forth-word)
525: (byte-compile 'forth-update-properties)
526: (byte-compile 'forth-delete-properties)
527: (byte-compile 'forth-get-regexp-branch))
528:
529: ;;; imenu support
530: ;;;
531: (defvar forth-defining-words
532: '("VARIABLE" "CONSTANT" "2VARIABLE" "2CONSTANT" "FVARIABLE" "FCONSTANT"
533: "USER" "VALUE" "field" "end-struct" "VOCABULARY" "CREATE" ":" "CODE"
534: "DEFER" "ALIAS")
535: "List of words, that define the following word.
536: Used for imenu index generation")
537:
538:
539: (defun forth-next-definition-starter ()
540: (progn
541: (let* ((pos (re-search-forward forth-defining-words-regexp (point-max) t)))
542: (if pos
543: (if (or (text-property-not-all (match-beginning 0) (match-end 0)
544: 'forth-parsed nil)
545: (text-property-not-all (match-beginning 0) (match-end 0)
546: 'forth-state nil))
547: (forth-next-definition-starter)
548: t)
549: nil))))
550:
551: (defun forth-create-index ()
552: (let* ((forth-defining-words-regexp
553: (concat "\\<\\(" (regexp-opt forth-defining-words) "\\)\\>"))
554: (index nil))
555: (goto-char (point-min))
556: (while (forth-next-definition-starter)
557: (if (looking-at "[ \t]*\\([^ \t\n]+\\)")
558: (setq index (cons (cons (match-string 1) (point)) index))))
559: index))
560:
561: (require 'speedbar)
562: (speedbar-add-supported-extension ".fs")
563: (speedbar-add-supported-extension ".fb")
564:
565: ;; (require 'profile)
566: ;; (setq profile-functions-list '(forth-set-word-properties forth-next-known-forth-word forth-update-properties forth-delete-properties forth-get-regexp-branch))
567:
568: ;;; Indentation
569: ;;;
570:
571: (defvar forth-indent-words nil
572: "List of words that have indentation behaviour.
573: Each element of `forth-indent-words' should have the form
574: (MATCHER INDENT1 INDENT2)
575:
576: MATCHER is either a list of strings to match, or a REGEXP.
577: If it's a REGEXP, it should not be surrounded by `\\<` or `\\>`, since
578: that'll be done automatically by the search routines.
579:
580: INDENT1 specifies how to indent a word that's located at a line's begin,
581: following any number of whitespaces.
582:
583: INDENT2 specifies how to indent words that are not located at a line's begin.
584:
585: INDENT1 and INDENT2 are indentation specifications of the form
586: (SELF-INDENT . NEXT-INDENT), where SELF-INDENT is a numerical value,
587: specifying how the matching line and all following lines are to be
588: indented, relative to previous lines. NEXT-INDENT specifies how to indent
589: following lines, relative to the matching line.
590:
591: Even values of SELF-INDENT and NEXT-INDENT correspond to multiples of
592: `forth-indent-level'. Odd values get an additional
593: `forth-minor-indent-level' added/substracted. Eg a value of -2 indents
594: 1 * forth-indent-level to the left, wheras 3 indents
595: 1 * forth-indent-level + forth-minor-indent-level columns to the right.")
596:
597: (setq forth-indent-words
598: '(((":" ":noname" "code" "if" "begin" "do" "?do" "+do" "-do" "u+do"
599: "u-do" "?dup-if" "?dup-0=-if" "case" "of" "try" "struct"
600: "[if]" "[ifdef]" "[ifundef]" "[begin]" "[for]" "[do]" "[?do]"
601: "class" "interface" "m:" ":m")
602: (0 . 2) (0 . 2))
603: ((";" ";m") (-2 . 0) (0 . -2))
604: (("end-code" "again" "repeat" "then" "endtry" "endcase" "endof"
605: "end-struct" "[then]" "[endif]" "[loop]" "[+loop]" "[next]"
606: "[until]" "[repeat]" "[again]" "end-class" "end-interface"
607: "end-class-noname" "end-interface-noname" "loop"
608: "class;")
609: (-2 . 0) (0 . -2))
610: (("protected" "public" "how:") (-1 . 1) (0 . 0))
611: (("+loop" "-loop" "until") (-2 . 0) (-2 . 0))
612: (("else" "recover" "[else]") (-2 . 2) (0 . 0))
613: (("while" "does>" "[while]") (-1 . 1) (0 . 0))
614: (("\\g") (-2 . 2) (0 . 0))))
615:
616: (defvar forth-local-indent-words nil
617: "List of Forth words to prepend to `forth-indent-words', when a forth-mode
618: buffer is created. Should be set by a Forth source, using a local variables
619: list at the end of the file (\"Local Variables: ... forth-local-words: ...
620: End:\" construct).")
621:
622: (defvar forth-custom-indent-words nil
623: "List of Forth words to prepend to `forth-indent-words'. Should be set in
624: your .emacs.")
625:
626: (defvar forth-indent-level 4
627: "Indentation of Forth statements.")
628: (defvar forth-minor-indent-level 2
629: "Minor indentation of Forth statements.")
630: (defvar forth-compiled-indent-words nil)
631:
632: ;; Return, whether `pos' is the first forth word on its line
633: (defun forth-first-word-on-line-p (pos)
634: (save-excursion
635: (beginning-of-line)
636: (skip-chars-forward " \t")
637: (= pos (point))))
638:
639: ;; Return indentation data (SELF-INDENT . NEXT-INDENT) of next known
640: ;; indentation word, or nil if there is no word up to `to'.
641: ;; Position `point' at location just after found word, or at `to'. Parsed
642: ;; ranges of text will not be taken into consideration!
643: (defun forth-next-known-indent-word (to)
644: (if (<= (point) to)
645: (progn
646: (let* ((regexp (car forth-compiled-indent-words))
647: (pos (re-search-forward regexp to t)))
648: (if pos
649: (if (text-property-not-all (match-beginning 0) (match-end 0)
650: 'forth-parsed nil)
651: (forth-next-known-indent-word to)
652: (let* ((branch (forth-get-regexp-branch))
653: (descr (cdr forth-compiled-indent-words))
654: (indent (cdr (assoc branch descr))))
655: (if (forth-first-word-on-line-p (match-beginning 0))
656: (nth 0 indent) (nth 1 indent))))
657: nil)))
658: nil))
659:
660: ;; Translate indentation value `indent' to indentation column. Multiples of
661: ;; 2 correspond to multiples of `forth-indent-level'. Odd numbers get an
662: ;; additional `forth-minor-indent-level' added (or substracted).
663: (defun forth-convert-to-column (indent)
664: (let* ((sign (if (< indent 0) -1 1))
665: (value (abs indent))
666: (major (* (/ value 2) forth-indent-level))
667: (minor (* (% value 2) forth-minor-indent-level)))
668: (* sign (+ major minor))))
669:
670: ;; Return the column increment, that the current line of forth code does to
671: ;; the current or following lines. `which' specifies which indentation values
672: ;; to use. 0 means the indentation of following lines relative to current
673: ;; line, 1 means the indentation of the current line relative to the previous
674: ;; line. Return `nil', if there are no indentation words on the current line.
675: (defun forth-get-column-incr (which)
676: (save-excursion
677: (let ((regexp (car forth-compiled-indent-words))
678: (word-indent)
679: (self-indent nil)
680: (next-indent nil)
681: (to (save-excursion (end-of-line) (point))))
682: (beginning-of-line)
683: (while (setq word-indent (forth-next-known-indent-word to))
684: (let* ((self-incr (car word-indent))
685: (next-incr (cdr word-indent))
686: (self-column-incr (forth-convert-to-column self-incr))
687: (next-column-incr (forth-convert-to-column next-incr)))
688: (setq next-indent (if next-indent next-indent 0))
689: (setq self-indent (if self-indent self-indent 0))
690: (if (or (and (> next-indent 0) (< self-column-incr 0))
691: (and (< next-indent 0) (> self-column-incr 0)))
692: (setq next-indent (+ next-indent self-column-incr))
693: (setq self-indent (+ self-indent self-column-incr)))
694: (setq next-indent (+ next-indent next-column-incr))))
695: (nth which (list self-indent next-indent)))))
696:
697: ;; Find previous line that contains indentation words, return the column,
698: ;; to which following text should be indented to.
699: (defun forth-get-anchor-column ()
700: (save-excursion
701: (if (/= 0 (forward-line -1)) 0
702: (let ((next-indent)
703: (self-indent))
704: (while (not (or (setq indent (forth-get-column-incr 1))
705: (<= (point) (point-min))))
706: (forward-line -1))
707: (+ (current-indentation) (if indent indent 0))))))
708:
709: (defun forth-indent-line (&optional flag)
710: "Correct indentation of the current Forth line."
711: (let* ((anchor (forth-get-anchor-column))
712: (column-incr (forth-get-column-incr 0)))
713: (forth-indent-to (if column-incr (+ anchor column-incr) anchor))))
714:
715: (defun forth-current-column ()
716: (- (point) (save-excursion (beginning-of-line) (point))))
717: (defun forth-current-indentation ()
718: (- (save-excursion (beginning-of-line) (forward-to-indentation 0) (point))
719: (save-excursion (beginning-of-line) (point))))
720:
721: (defun forth-indent-to (x)
722: (let ((p nil))
723: (setq p (- (forth-current-column) (forth-current-indentation)))
724: (forth-delete-indentation)
725: (beginning-of-line)
726: (indent-to x)
727: (if (> p 0) (forward-char p))))
728:
729: (defun forth-delete-indentation ()
730: (save-excursion
731: (delete-region
732: (progn (beginning-of-line) (point))
733: (progn (back-to-indentation) (point)))))
734:
735: (defun forth-indent-command ()
736: (interactive)
737: (forth-indent-line t))
738:
739: ;; remove trailing whitespaces in current line
740: (defun forth-remove-trailing ()
741: (save-excursion
742: (end-of-line)
743: (delete-region (point) (progn (skip-chars-backward " \t") (point)))))
744:
745: ;; insert newline, removing any trailing whitespaces in the current line
746: (defun forth-newline-remove-trailing ()
747: (save-excursion
748: (delete-region (point) (progn (skip-chars-backward " \t") (point))))
749: (newline))
750: ; (let ((was-point (point-marker)))
751: ; (unwind-protect
752: ; (progn (forward-line -1) (forth-remove-trailing))
753: ; (goto-char (was-point)))))
754:
755: ;; workaround for bug in `reindent-then-newline-and-indent'
756: (defun forth-reindent-then-newline-and-indent ()
757: (interactive "*")
758: (indent-according-to-mode)
759: (forth-newline-remove-trailing)
760: (indent-according-to-mode))
761:
762: ;;; end hilighting/indentation
763:
764: ;;; Block file encoding/decoding (dk)
765: ;;;
766:
767: (defconst forth-c/l 64 "Number of characters per block line")
768: (defconst forth-l/b 16 "Number of lines per block")
769:
770: ;; Check whether the unconverted block file line, point is in, does not
771: ;; contain `\n' and `\t' characters.
772: (defun forth-check-block-line (line)
773: (let ((end (save-excursion (beginning-of-line) (forward-char forth-c/l)
774: (point))))
775: (save-excursion
776: (beginning-of-line)
777: (when (search-forward "\n" end t)
778: (message "Warning: line %i contains newline character #10" line)
779: (ding t))
780: (beginning-of-line)
781: (when (search-forward "\t" end t)
782: (message "Warning: line %i contains tab character #8" line)
783: (ding t)))))
784:
785: (defun forth-convert-from-block (from to)
786: "Convert block file format to stream source in current buffer."
787: (let ((line (count-lines (point-min) from)))
788: (save-excursion
789: (goto-char from)
790: (set-mark to)
791: (while (< (+ (point) forth-c/l) (mark t))
792: (setq line (1+ line))
793: (forth-check-block-line line)
794: (forward-char forth-c/l)
795: (forth-newline-remove-trailing))
796: (when (= (+ (point) forth-c/l) (mark t))
797: (forth-remove-trailing))
798: (mark t))))
799:
800: ;; Pad a line of a block file up to `forth-c/l' characters, positioning `point'
801: ;; at the end of line.
802: (defun forth-pad-block-line ()
803: (save-excursion
804: (end-of-line)
805: (if (<= (current-column) forth-c/l)
806: (move-to-column forth-c/l t)
807: (message "Line %i longer than %i characters, truncated"
808: (count-lines (point-min) (point)) forth-c/l)
809: (ding t)
810: (move-to-column forth-c/l t)
811: (delete-region (point) (progn (end-of-line) (point))))))
812:
813: ;; Replace tab characters in current line by spaces.
814: (defun forth-convert-tabs-in-line ()
815: (save-excursion
816: (beginning-of-line)
817: (while (search-forward "\t" (save-excursion (end-of-line) (point)) t)
818: (backward-char)
819: (delete-region (point) (1+ (point)))
820: (insert-char ?\ (- tab-width (% (current-column) tab-width))))))
821:
822: ;; Delete newline at end of current line, concatenating it with the following
823: ;; line. Place `point' at end of newly formed line.
824: (defun forth-delete-newline ()
825: (end-of-line)
826: (delete-region (point) (progn (beginning-of-line 2) (point))))
827:
828: (defun forth-convert-to-block (from to &optional original-buffer)
829: "Convert range of text to block file format in current buffer."
830: (let* ((lines 0)) ; I have to count lines myself, since `count-lines' has
831: ; problems with trailing newlines...
832: (save-excursion
833: (goto-char from)
834: (set-mark to)
835: ;; pad lines to full length (`forth-c/l' characters per line)
836: (while (< (save-excursion (end-of-line) (point)) (mark t))
837: (setq lines (1+ lines))
838: (forth-pad-block-line)
839: (forth-convert-tabs-in-line)
840: (forward-line))
841: ;; also make sure the last line is padded, if `to' is at its end
842: (end-of-line)
843: (when (= (point) (mark t))
844: (setq lines (1+ lines))
845: (forth-pad-block-line)
846: (forth-convert-tabs-in-line))
847: ;; remove newlines between lines
848: (goto-char from)
849: (while (< (save-excursion (end-of-line) (point)) (mark t))
850: (forth-delete-newline))
851: ;; append empty lines, until last block is complete
852: (goto-char (mark t))
853: (let* ((required (* (/ (+ lines (1- forth-l/b)) forth-l/b) forth-l/b))
854: (pad-lines (- required lines)))
855: (while (> pad-lines 0)
856: (insert-char ?\ forth-c/l)
857: (setq pad-lines (1- pad-lines))))
858: (point))))
859:
860: (defun forth-detect-block-file-p ()
861: "Return non-nil if the current buffer is in block file format. Detection is
862: done by checking whether the first line has 1024 characters or more."
863: (save-restriction
864: (widen)
865: (save-excursion
866: (beginning-of-buffer)
867: (end-of-line)
868: (>= (current-column) 1024))))
869:
870: ;; add block file conversion routines to `format-alist'
871: (defconst forth-block-format-description
872: '(forth-blocks "Forth block source file" nil
873: forth-convert-from-block forth-convert-to-block
874: t normal-mode))
875: (unless (memq forth-block-format-description format-alist)
876: (setq format-alist (cons forth-block-format-description format-alist)))
877:
878: ;;; End block file encoding/decoding
879:
880: ;;; Block file editing
881: ;;;
882: (defvar forth-overlay-arrow-string ">>")
883: (defvar forth-block-base 1 "Number of first block in block file")
884: (defvar forth-show-screen nil
885: "Non-nil means to show screen starts and numbers (for block files)")
886: (defvar forth-warn-long-lines nil
887: "Non-nil means to warn about lines that are longer than 64 characters")
888:
889: (defvar forth-screen-marker nil)
890:
891: (defun forth-update-show-screen ()
892: "If `forth-show-screen' is non-nil, put overlay arrow to start of screen,
893: `point' is in. If arrow now points to different screen than before, display
894: screen number."
895: (if (not forth-show-screen)
896: (setq overlay-arrow-string nil)
897: (save-excursion
898: (let* ((line (count-lines (point-min) (min (point-max) (1+ (point)))))
899: (first-line (1+ (* (/ (1- line) forth-l/b) forth-l/b)))
900: (scr (+ forth-block-base (/ first-line forth-l/b))))
901: (setq overlay-arrow-string forth-overlay-arrow-string)
902: (goto-line first-line)
903: (setq overlay-arrow-position forth-screen-marker)
904: (set-marker forth-screen-marker
905: (save-excursion (goto-line first-line) (point)))
906: (setq forth-screen-number-string (format "%d" scr))))))
907:
908: (add-hook 'forth-motion-hooks 'forth-update-show-screen)
909:
910: (defun forth-update-warn-long-lines ()
911: "If `forth-warn-long-lines' is non-nil, display a warning whenever a line
912: exceeds 64 characters."
913: (when forth-warn-long-lines
914: (when (> (save-excursion (end-of-line) (current-column)) forth-c/l)
915: (message "Warning: current line exceeds %i characters"
916: forth-c/l))))
917:
918: (add-hook 'forth-motion-hooks 'forth-update-warn-long-lines)
919:
920: ;;; End block file editing
921:
922:
923: (defvar forth-mode-abbrev-table nil
924: "Abbrev table in use in Forth-mode buffers.")
925:
926: (define-abbrev-table 'forth-mode-abbrev-table ())
927:
928: (defvar forth-mode-map nil
929: "Keymap used in Forth mode.")
930:
931: (if (not forth-mode-map)
932: (setq forth-mode-map (make-sparse-keymap)))
933:
934: ;(define-key forth-mode-map "\M-\C-x" 'compile)
935: (define-key forth-mode-map "\C-x\\" 'comment-region)
936: (define-key forth-mode-map "\C-x~" 'forth-remove-tracers)
937: (define-key forth-mode-map "\e\C-m" 'forth-send-paragraph)
938: (define-key forth-mode-map "\eo" 'forth-send-buffer)
939: (define-key forth-mode-map "\C-x\C-m" 'forth-split)
940: (define-key forth-mode-map "\e " 'forth-reload)
941: (define-key forth-mode-map "\t" 'forth-indent-command)
942: (define-key forth-mode-map "\C-m" 'forth-reindent-then-newline-and-indent)
943: (define-key forth-mode-map "\M-q" 'forth-fill-paragraph)
944: (define-key forth-mode-map "\e." 'forth-find-tag)
945:
946: ;;; hook into motion events (realy ugly!) (dk)
947: (define-key forth-mode-map "\C-n" 'forth-next-line)
948: (define-key forth-mode-map "\C-p" 'forth-previous-line)
949: (define-key forth-mode-map [down] 'forth-next-line)
950: (define-key forth-mode-map [up] 'forth-previous-line)
951: (define-key forth-mode-map "\C-f" 'forth-forward-char)
952: (define-key forth-mode-map "\C-b" 'forth-backward-char)
953: (define-key forth-mode-map [right] 'forth-forward-char)
954: (define-key forth-mode-map [left] 'forth-backward-char)
955: (define-key forth-mode-map "\M-f" 'forth-forward-word)
956: (define-key forth-mode-map "\M-b" 'forth-backward-word)
957: (define-key forth-mode-map [C-right] 'forth-forward-word)
958: (define-key forth-mode-map [C-left] 'forth-backward-word)
959: (define-key forth-mode-map "\M-v" 'forth-scroll-down)
960: (define-key forth-mode-map "\C-v" 'forth-scroll-up)
961: (define-key forth-mode-map [prior] 'forth-scroll-down)
962: (define-key forth-mode-map [next] 'forth-scroll-up)
963:
964: (defun forth-next-line (arg)
965: (interactive "p") (next-line arg) (run-hooks 'forth-motion-hooks))
966: (defun forth-previous-line (arg)
967: (interactive "p") (previous-line arg) (run-hooks 'forth-motion-hooks))
968: (defun forth-backward-char (arg)
969: (interactive "p") (backward-char arg) (run-hooks 'forth-motion-hooks))
970: (defun forth-forward-char (arg)
971: (interactive "p") (forward-char arg) (run-hooks 'forth-motion-hooks))
972: (defun forth-forward-word (arg)
973: (interactive "p") (forward-word arg) (run-hooks 'forth-motion-hooks))
974: (defun forth-backward-word (arg)
975: (interactive "p") (backward-word arg) (run-hooks 'forth-motion-hooks))
976: (defun forth-scroll-down (arg)
977: (interactive "P") (scroll-down arg) (run-hooks 'forth-motion-hooks))
978: (defun forth-scroll-up (arg)
979: (interactive "P") (scroll-up arg) (run-hooks 'forth-motion-hooks))
980:
981: ;setup for C-h C-i to work
982: (if (fboundp 'info-lookup-add-help)
983: (info-lookup-add-help
984: :topic 'symbol
985: :mode 'forth-mode
986: :regexp "[^
987: ]+"
988: :ignore-case t
989: :doc-spec '(("(gforth)Name Index" nil "`" "' "))))
990:
991: (load "etags")
992:
993: (defun forth-find-tag (tagname &optional next-p regexp-p)
994: (interactive (find-tag-interactive "Find tag: "))
995: (unless (or regexp-p next-p)
996: (setq tagname (concat "\\(^\\|\\s-\\)\\(" (regexp-quote tagname)
997: "\\)\\(\\s-\\|$\\)")))
998: (switch-to-buffer
999: (find-tag-noselect tagname next-p t)))
1000:
1001: (defvar forth-mode-syntax-table nil
1002: "Syntax table in use in Forth-mode buffers.")
1003:
1004: ;; Important: hilighting/indentation now depends on a correct syntax table.
1005: ;; All characters, except whitespace *must* belong to the "word constituent"
1006: ;; syntax class. If different behaviour is required, use of Categories might
1007: ;; help.
1008: (if (not forth-mode-syntax-table)
1009: (progn
1010: (setq forth-mode-syntax-table (make-syntax-table))
1011: (let ((char 0))
1012: (while (< char ?!)
1013: (modify-syntax-entry char " " forth-mode-syntax-table)
1014: (setq char (1+ char)))
1015: (while (< char 256)
1016: (modify-syntax-entry char "w" forth-mode-syntax-table)
1017: (setq char (1+ char))))
1018: ))
1019:
1020:
1021: (defun forth-mode-variables ()
1022: (set-syntax-table forth-mode-syntax-table)
1023: (setq local-abbrev-table forth-mode-abbrev-table)
1024: (make-local-variable 'paragraph-start)
1025: (setq paragraph-start (concat "^$\\|" page-delimiter))
1026: (make-local-variable 'paragraph-separate)
1027: (setq paragraph-separate paragraph-start)
1028: (make-local-variable 'indent-line-function)
1029: (setq indent-line-function 'forth-indent-line)
1030: ; (make-local-variable 'require-final-newline)
1031: ; (setq require-final-newline t)
1032: (make-local-variable 'comment-start)
1033: (setq comment-start "\\ ")
1034: ;(make-local-variable 'comment-end)
1035: ;(setq comment-end " )")
1036: (make-local-variable 'comment-column)
1037: (setq comment-column 40)
1038: (make-local-variable 'comment-start-skip)
1039: (setq comment-start-skip "\\ ")
1040: (make-local-variable 'comment-indent-hook)
1041: (setq comment-indent-hook 'forth-comment-indent)
1042: (make-local-variable 'parse-sexp-ignore-comments)
1043: (setq parse-sexp-ignore-comments t)
1044: (setq case-fold-search t)
1045: (make-local-variable 'forth-words)
1046: (make-local-variable 'forth-compiled-words)
1047: (make-local-variable 'forth-compiled-indent-words)
1048: (make-local-variable 'forth-hilight-level)
1049: (make-local-variable 'after-change-functions)
1050: (make-local-variable 'forth-show-screen)
1051: (make-local-variable 'forth-screen-marker)
1052: (make-local-variable 'forth-warn-long-lines)
1053: (make-local-variable 'forth-screen-number-string)
1054: (make-local-variable 'forth-use-oof)
1055: (make-local-variable 'forth-use-objects)
1056: (setq forth-screen-marker (copy-marker 0))
1057: (add-hook 'after-change-functions 'forth-change-function)
1058: (setq imenu-create-index-function 'forth-create-index))
1059:
1060: ;;;###autoload
1061: (defun forth-mode ()
1062: "
1063: Major mode for editing Forth code. Tab indents for Forth code. Comments
1064: are delimited with \\ and newline. Paragraphs are separated by blank lines
1065: only. Block files are autodetected, when read, and converted to normal
1066: stream source format. See also `forth-block-mode'.
1067: \\{forth-mode-map}
1068: Forth-split
1069: Positions the current buffer on top and a forth-interaction window
1070: below. The window size is controlled by the forth-percent-height
1071: variable (see below).
1072: Forth-reload
1073: Reloads the forth library and restarts the forth process.
1074: Forth-send-buffer
1075: Sends the current buffer, in text representation, as input to the
1076: forth process.
1077: Forth-send-paragraph
1078: Sends the previous or the current paragraph to the forth-process.
1079: Note that the cursor only need to be with in the paragraph to be sent.
1080: forth-documentation
1081: Search for documentation of forward adjacent to cursor. Note! To use
1082: this mode you have to add a line, to your .emacs file, defining the
1083: directories to search through for documentation files (se variable
1084: forth-help-load-path below) e.g. (setq forth-help-load-path '(nil)).
1085:
1086: Variables controlling interaction and startup
1087: forth-percent-height
1088: Tells split how high to make the edit portion, in percent of the
1089: current screen height.
1090: forth-program-name
1091: Tells the library which program name to execute in the interation
1092: window.
1093:
1094: Variables controlling syntax hilighting/recognition of parsed text:
1095: `forth-words'
1096: List of words that have a special parsing behaviour and/or should be
1097: hilighted. Add custom words by setting forth-custom-words in your
1098: .emacs, or by setting forth-local-words, in source-files' local
1099: variables lists.
1100: forth-use-objects
1101: Set this variable to non-nil in your .emacs, or a local variables
1102: list, to hilight and recognize the words from the \"Objects\" package
1103: for object-oriented programming.
1104: forth-use-oof
1105: Same as above, just for the \"OOF\" package.
1106: forth-custom-words
1107: List of custom Forth words to prepend to `forth-words'. Should be set
1108: in your .emacs.
1109: forth-local-words
1110: List of words to prepend to `forth-words', whenever a forth-mode
1111: buffer is created. That variable should be set by Forth sources, using
1112: a local variables list at the end of file, to get file-specific
1113: hilighting.
1114: 0 [IF]
1115: Local Variables: ...
1116: forth-local-words: ...
1117: End:
1118: [THEN]
1119: forth-hilight-level
1120: Controls how much syntax hilighting is done. Should be in the range
1121: 0..3
1122:
1123: Variables controlling indentation style:
1124: `forth-indent-words'
1125: List of words that influence indentation.
1126: forth-local-indent-words
1127: List of words to prepend to `forth-indent-words', similar to
1128: forth-local-words. Should be used for specifying file-specific
1129: indentation, using a local variables list.
1130: forth-custom-indent-words
1131: List of words to prepend to `forth-indent-words'. Should be set in your
1132: .emacs.
1133: forth-indent-level
1134: Indentation increment/decrement of Forth statements.
1135: forth-minor-indent-level
1136: Minor indentation increment/decrement of Forth statemens.
1137:
1138: Variables controlling block-file editing:
1139: forth-show-screen
1140: Non-nil means, that the start of the current screen is marked by an
1141: overlay arrow, and screen numbers are displayed in the mode line.
1142: This variable is by default nil for `forth-mode' and t for
1143: `forth-block-mode'.
1144: forth-overlay-arrow-string
1145: String to display as the overlay arrow, when `forth-show-screen' is t.
1146: Setting this variable to nil disables the overlay arrow.
1147: forth-block-base
1148: Screen number of the first block in a block file. Defaults to 1.
1149: forth-warn-long-lines
1150: Non-nil means that a warning message is displayed whenever you edit or
1151: move over a line that is longer than 64 characters (the maximum line
1152: length that can be stored into a block file). This variable defaults to
1153: t for `forth-block-mode' and to nil for `forth-mode'.
1154:
1155: Variables controling documentation search
1156: forth-help-load-path
1157: List of directories to search through to find *.doc
1158: (forth-help-file-suffix) files. Nil means current default directory.
1159: The specified directories must contain at least one .doc file. If it
1160: does not and you still want the load-path to scan that directory, create
1161: an empty file dummy.doc.
1162: forth-help-file-suffix
1163: The file names to search for in each directory specified by
1164: forth-help-load-path. Defaulted to '*.doc'.
1165: "
1166: (interactive)
1167: (kill-all-local-variables)
1168: (use-local-map forth-mode-map)
1169: (setq mode-name "Forth")
1170: (setq major-mode 'forth-mode)
1171: ;; convert buffer contents from block file format, if necessary
1172: (when (forth-detect-block-file-p)
1173: (widen)
1174: (message "Converting from Forth block source...")
1175: (forth-convert-from-block (point-min) (point-max))
1176: (message "Converting from Forth block source...done"))
1177: ;; if user switched from forth-block-mode to forth-mode, make sure the file
1178: ;; is now stored as normal strem source
1179: (when (equal buffer-file-format '(forth-blocks))
1180: (setq buffer-file-format nil))
1181: (forth-mode-variables)
1182: ; (if (not (forth-process-running-p))
1183: ; (run-forth forth-program-name))
1184: (run-hooks 'forth-mode-hook))
1185:
1186: ;;;###autoload
1187: (define-derived-mode forth-block-mode forth-mode "Forth Block Source"
1188: "Major mode for editing Forth block source files, derived from
1189: `forth-mode'. Differences to `forth-mode' are:
1190: * files are converted to block format, when written (`buffer-file-format'
1191: is set to `(forth-blocks)')
1192: * `forth-show-screen' and `forth-warn-long-lines' are t by default
1193:
1194: Note that the length of lines in block files is limited to 64 characters.
1195: When writing longer lines to a block file, a warning is displayed in the
1196: echo area and the line is truncated.
1197:
1198: Another problem is imposed by block files that contain newline or tab
1199: characters. When Emacs converts such files back to block file format,
1200: it'll translate those characters to a number of spaces. However, when
1201: you read such a file, a warning message is displayed in the echo area,
1202: including a line number that may help you to locate and fix the problem.
1203:
1204: So have a look at the *Messages* buffer, whenever you hear (or see) Emacs'
1205: bell during block file read/write operations."
1206: (setq buffer-file-format '(forth-blocks))
1207: (setq forth-show-screen t)
1208: (setq forth-warn-long-lines t)
1209: (setq forth-screen-number-string (format "%d" forth-block-base))
1210: (setq mode-line-format (append (reverse (cdr (reverse mode-line-format)))
1211: '("--S" forth-screen-number-string "-%-"))))
1212:
1213: (add-hook 'forth-mode-hook
1214: '(lambda ()
1215: (make-local-variable 'compile-command)
1216: (setq compile-command "gforth ")
1217: (forth-hack-local-variables)
1218: (forth-customize-words)
1219: (forth-compile-words)
1220: (forth-change-function (point-min) (point-max) nil t)))
1221:
1222: (defun forth-fill-paragraph ()
1223: "Fill comments (starting with '\'; do not fill code (block style
1224: programmers who tend to fill code won't use emacs anyway:-)."
1225: ; Currently only comments at the start of the line are filled.
1226: ; Something like lisp-fill-paragraph may be better. We cannot use
1227: ; fill-paragraph, because it removes the \ from the first comment
1228: ; line. Therefore we have to look for the first line of the comment
1229: ; and use fill-region.
1230: (interactive)
1231: (save-excursion
1232: (beginning-of-line)
1233: (while (and
1234: (= (forward-line -1) 0)
1235: (looking-at "[ \t]*\\\\g?[ \t]+")))
1236: (if (not (looking-at "[ \t]*\\\\g?[ \t]+"))
1237: (forward-line 1))
1238: (let ((from (point))
1239: (to (save-excursion (forward-paragraph) (point))))
1240: (if (looking-at "[ \t]*\\\\g?[ \t]+")
1241: (progn (goto-char (match-end 0))
1242: (set-fill-prefix)
1243: (fill-region from to nil))))))
1244:
1245: (defun forth-comment-indent ()
1246: (save-excursion
1247: (beginning-of-line)
1248: (if (looking-at ":[ \t]*")
1249: (progn
1250: (end-of-line)
1251: (skip-chars-backward " \t\n")
1252: (1+ (current-column)))
1253: comment-column)))
1254:
1255:
1256: ;; Forth commands
1257:
1258: (defun forth-remove-tracers ()
1259: "Remove tracers of the form `~~ '. Queries the user for each occurrence."
1260: (interactive)
1261: (query-replace-regexp "\\(~~ \\| ~~$\\)" "" nil))
1262:
1263: (defvar forth-program-name "gforth"
1264: "*Program invoked by the `run-forth' command.")
1265:
1266: (defvar forth-band-name nil
1267: "*Band loaded by the `run-forth' command.")
1268:
1269: (defvar forth-program-arguments nil
1270: "*Arguments passed to the Forth program by the `run-forth' command.")
1271:
1272: (defun run-forth (command-line)
1273: "Run an inferior Forth process. Output goes to the buffer `*forth*'.
1274: With argument, asks for a command line. Split up screen and run forth
1275: in the lower portion. The current-buffer when called will stay in the
1276: upper portion of the screen, and all other windows are deleted.
1277: Call run-forth again to make the *forth* buffer appear in the lower
1278: part of the screen."
1279: (interactive
1280: (list (let ((default
1281: (or forth-process-command-line
1282: (forth-default-command-line))))
1283: (if current-prefix-arg
1284: (read-string "Run Forth: " default)
1285: default))))
1286: (setq forth-process-command-line command-line)
1287: (forth-start-process command-line)
1288: (forth-split)
1289: (forth-set-runlight forth-runlight:input))
1290:
1291: (defun run-forth-if-not ()
1292: (if (not (forth-process-running-p))
1293: (run-forth forth-program-name)))
1294:
1295: (defun reset-forth ()
1296: "Reset the Forth process."
1297: (interactive)
1298: (let ((process (get-process forth-program-name)))
1299: (cond ((or (not process)
1300: (not (eq (process-status process) 'run))
1301: (yes-or-no-p
1302: "The Forth process is running, are you SURE you want to reset it? "))
1303: (message "Resetting Forth process...")
1304: (forth-reload)
1305: (message "Resetting Forth process...done")))))
1306:
1307: (defun forth-default-command-line ()
1308: (concat forth-program-name
1309: (if forth-program-arguments
1310: (concat " " forth-program-arguments)
1311: "")))
1312:
1313: ;;;; Internal Variables
1314:
1315: (defvar forth-process-command-line nil
1316: "Command used to start the most recent Forth process.")
1317:
1318: (defvar forth-previous-send ""
1319: "Most recent expression transmitted to the Forth process.")
1320:
1321: (defvar forth-process-filter-queue '()
1322: "Queue used to synchronize filter actions properly.")
1323:
1324: (defvar forth-prompt "ok"
1325: "The current forth prompt string.")
1326:
1327: (defvar forth-start-hook nil
1328: "If non-nil, a procedure to call when the Forth process is started.
1329: When called, the current buffer will be the Forth process-buffer.")
1330:
1331: (defvar forth-signal-death-message nil
1332: "If non-nil, causes a message to be generated when the Forth process dies.")
1333:
1334: (defvar forth-percent-height 50
1335: "Tells run-forth how high the upper window should be in percent.")
1336:
1337: (defconst forth-runlight:input ?I
1338: "The character displayed when the Forth process is waiting for input.")
1339:
1340: (defvar forth-mode-string ""
1341: "String displayed in the mode line when the Forth process is running.")
1342:
1343: ;;;; Evaluation Commands
1344:
1345: (defun forth-send-string (&rest strings)
1346: "Send the string arguments to the Forth process.
1347: The strings are concatenated and terminated by a newline."
1348: (cond ((forth-process-running-p)
1349: (forth-send-string-1 strings))
1350: ((yes-or-no-p "The Forth process has died. Reset it? ")
1351: (reset-forth)
1352: (goto-char (point-max))
1353: (forth-send-string-1 strings))))
1354:
1355: (defun forth-send-string-1 (strings)
1356: (let ((string (apply 'concat strings)))
1357: (forth-send-string-2 string)))
1358:
1359: (defun forth-send-string-2 (string)
1360: (let ((process (get-process forth-program-name)))
1361: (if (not (eq (current-buffer) (get-buffer forth-program-name)))
1362: (progn
1363: (forth-process-filter-output string)
1364: (forth-process-filter:finish)))
1365: (send-string process (concat string "\n"))
1366: (if (eq (current-buffer) (process-buffer process))
1367: (set-marker (process-mark process) (point)))))
1368:
1369:
1370: (defun forth-send-region (start end)
1371: "Send the current region to the Forth process.
1372: The region is sent terminated by a newline."
1373: (interactive "r")
1374: (let ((process (get-process forth-program-name)))
1375: (if (and process (eq (current-buffer) (process-buffer process)))
1376: (progn (goto-char end)
1377: (set-marker (process-mark process) end))))
1378: (forth-send-string "\n" (buffer-substring start end) "\n"))
1379:
1380: (defun forth-end-of-paragraph ()
1381: (if (looking-at "[\t\n ]+") (skip-chars-backward "\t\n "))
1382: (if (not (re-search-forward "\n[ \t]*\n" nil t))
1383: (goto-char (point-max))))
1384:
1385: (defun forth-send-paragraph ()
1386: "Send the current or the previous paragraph to the Forth process"
1387: (interactive)
1388: (let (end)
1389: (save-excursion
1390: (forth-end-of-paragraph)
1391: (skip-chars-backward "\t\n ")
1392: (setq end (point))
1393: (if (re-search-backward "\n[ \t]*\n" nil t)
1394: (setq start (point))
1395: (goto-char (point-min)))
1396: (skip-chars-forward "\t\n ")
1397: (forth-send-region (point) end))))
1398:
1399: (defun forth-send-buffer ()
1400: "Send the current buffer to the Forth process."
1401: (interactive)
1402: (if (eq (current-buffer) (forth-process-buffer))
1403: (error "Not allowed to send this buffer's contents to Forth"))
1404: (forth-send-region (point-min) (point-max)))
1405:
1406:
1407: ;;;; Basic Process Control
1408:
1409: (defun forth-start-process (command-line)
1410: (let ((buffer (get-buffer-create "*forth*")))
1411: (let ((process (get-buffer-process buffer)))
1412: (save-excursion
1413: (set-buffer buffer)
1414: (progn (if process (delete-process process))
1415: (goto-char (point-max))
1416: (setq mode-line-process '(": %s"))
1417: (add-to-global-mode-string 'forth-mode-string)
1418: (setq process
1419: (apply 'start-process
1420: (cons forth-program-name
1421: (cons buffer
1422: (forth-parse-command-line
1423: command-line)))))
1424: (set-marker (process-mark process) (point-max))
1425: (forth-process-filter-initialize t)
1426: (forth-modeline-initialize)
1427: (set-process-sentinel process 'forth-process-sentinel)
1428: (set-process-filter process 'forth-process-filter)
1429: (run-hooks 'forth-start-hook)))
1430: buffer)))
1431:
1432: (defun forth-parse-command-line (string)
1433: (setq string (substitute-in-file-name string))
1434: (let ((start 0)
1435: (result '()))
1436: (while start
1437: (let ((index (string-match "[ \t]" string start)))
1438: (setq start
1439: (cond ((not index)
1440: (setq result
1441: (cons (substring string start)
1442: result))
1443: nil)
1444: ((= index start)
1445: (string-match "[^ \t]" string start))
1446: (t
1447: (setq result
1448: (cons (substring string start index)
1449: result))
1450: (1+ index))))))
1451: (nreverse result)))
1452:
1453:
1454: (defun forth-process-running-p ()
1455: "True iff there is a Forth process whose status is `run'."
1456: (let ((process (get-process forth-program-name)))
1457: (and process
1458: (eq (process-status process) 'run))))
1459:
1460: (defun forth-process-buffer ()
1461: (let ((process (get-process forth-program-name)))
1462: (and process (process-buffer process))))
1463:
1464: ;;;; Process Filter
1465:
1466: (defun forth-process-sentinel (proc reason)
1467: (let ((inhibit-quit nil))
1468: (forth-process-filter-initialize (eq reason 'run))
1469: (if (eq reason 'run)
1470: (forth-modeline-initialize)
1471: (setq forth-mode-string "")))
1472: (if (and (not (memq reason '(run stop)))
1473: forth-signal-death-message)
1474: (progn (beep)
1475: (message
1476: "The Forth process has died! Do M-x reset-forth to restart it"))))
1477:
1478: (defun forth-process-filter-initialize (running-p)
1479: (setq forth-process-filter-queue (cons '() '()))
1480: (setq forth-prompt "ok"))
1481:
1482:
1483: (defun forth-process-filter (proc string)
1484: (forth-process-filter-output string)
1485: (forth-process-filter:finish))
1486:
1487: (defun forth-process-filter:enqueue (action)
1488: (let ((next (cons action '())))
1489: (if (cdr forth-process-filter-queue)
1490: (setcdr (cdr forth-process-filter-queue) next)
1491: (setcar forth-process-filter-queue next))
1492: (setcdr forth-process-filter-queue next)))
1493:
1494: (defun forth-process-filter:finish ()
1495: (while (car forth-process-filter-queue)
1496: (let ((next (car forth-process-filter-queue)))
1497: (setcar forth-process-filter-queue (cdr next))
1498: (if (not (cdr next))
1499: (setcdr forth-process-filter-queue '()))
1500: (apply (car (car next)) (cdr (car next))))))
1501:
1502: ;;;; Process Filter Output
1503:
1504: (defun forth-process-filter-output (&rest args)
1505: (if (not (and args
1506: (null (cdr args))
1507: (stringp (car args))
1508: (string-equal "" (car args))))
1509: (forth-process-filter:enqueue
1510: (cons 'forth-process-filter-output-1 args))))
1511:
1512: (defun forth-process-filter-output-1 (&rest args)
1513: (save-excursion
1514: (forth-goto-output-point)
1515: (apply 'insert-before-markers args)))
1516:
1517: (defun forth-guarantee-newlines (n)
1518: (save-excursion
1519: (forth-goto-output-point)
1520: (let ((stop nil))
1521: (while (and (not stop)
1522: (bolp))
1523: (setq n (1- n))
1524: (if (bobp)
1525: (setq stop t)
1526: (backward-char))))
1527: (forth-goto-output-point)
1528: (while (> n 0)
1529: (insert-before-markers ?\n)
1530: (setq n (1- n)))))
1531:
1532: (defun forth-goto-output-point ()
1533: (let ((process (get-process forth-program-name)))
1534: (set-buffer (process-buffer process))
1535: (goto-char (process-mark process))))
1536:
1537: (defun forth-modeline-initialize ()
1538: (setq forth-mode-string " "))
1539:
1540: (defun forth-set-runlight (runlight)
1541: (aset forth-mode-string 0 runlight)
1542: (forth-modeline-redisplay))
1543:
1544: (defun forth-modeline-redisplay ()
1545: (save-excursion (set-buffer (other-buffer)))
1546: (set-buffer-modified-p (buffer-modified-p))
1547: (sit-for 0))
1548:
1549: ;;;; Process Filter Operations
1550:
1551: (defun add-to-global-mode-string (x)
1552: (cond ((null global-mode-string)
1553: (setq global-mode-string (list "" x " ")))
1554: ((not (memq x global-mode-string))
1555: (setq global-mode-string
1556: (cons ""
1557: (cons x
1558: (cons " "
1559: (if (equal "" (car global-mode-string))
1560: (cdr global-mode-string)
1561: global-mode-string))))))))
1562:
1563:
1564: ;; Misc
1565:
1566: (setq auto-mode-alist (append auto-mode-alist
1567: '(("\\.fs$" . forth-mode))))
1568:
1569: (defun forth-split ()
1570: (interactive)
1571: (forth-split-1 "*forth*"))
1572:
1573: (defun forth-split-1 (buffer)
1574: (if (not (eq (window-buffer) (get-buffer buffer)))
1575: (progn
1576: (delete-other-windows)
1577: (split-window-vertically
1578: (/ (* (screen-height) forth-percent-height) 100))
1579: (other-window 1)
1580: (switch-to-buffer buffer)
1581: (goto-char (point-max))
1582: (other-window 1))))
1583:
1584: (defun forth-reload ()
1585: (interactive)
1586: (let ((process (get-process forth-program-name)))
1587: (if process (kill-process process t)))
1588: (sleep-for 0 100)
1589: (forth-mode))
1590:
1591:
1592: ;; Special section for forth-help
1593:
1594: (defvar forth-help-buffer "*Forth-help*"
1595: "Buffer used to display the requested documentation.")
1596:
1597: (defvar forth-help-load-path nil
1598: "List of directories to search through to find *.doc
1599: (forth-help-file-suffix) files. Nil means current default directory.
1600: The specified directories must contain at least one .doc file. If it
1601: does not and you still want the load-path to scan that directory, create
1602: an empty file dummy.doc.")
1603:
1604: (defvar forth-help-file-suffix "*.doc"
1605: "The file names to search for in each directory.")
1606:
1607: (setq forth-search-command-prefix "grep -n \"^ [^(]* ")
1608: (defvar forth-search-command-suffix "/dev/null")
1609: (defvar forth-grep-error-regexp ": No such file or directory")
1610:
1611: (defun forth-function-called-at-point ()
1612: "Return the space delimited word a point."
1613: (save-excursion
1614: (save-restriction
1615: (narrow-to-region (max (point-min) (- (point) 1000)) (point-max))
1616: (skip-chars-backward "^ \t\n" (point-min))
1617: (if (looking-at "[ \t\n]")
1618: (forward-char 1))
1619: (let (obj (p (point)))
1620: (skip-chars-forward "^ \t\n")
1621: (buffer-substring p (point))))))
1622:
1623: (defun forth-help-names-extend-comp (path-list result)
1624: (cond ((null path-list) result)
1625: ((null (car path-list))
1626: (forth-help-names-extend-comp (cdr path-list)
1627: (concat result forth-help-file-suffix " ")))
1628: (t (forth-help-names-extend-comp
1629: (cdr path-list) (concat result
1630: (expand-file-name (car path-list)) "/"
1631: forth-help-file-suffix " ")))))
1632:
1633: (defun forth-help-names-extended ()
1634: (if forth-help-load-path
1635: (forth-help-names-extend-comp forth-help-load-path "")
1636: (error "forth-help-load-path not specified")))
1637:
1638:
1639: ;(define-key forth-mode-map "\C-hf" 'forth-documentation)
1640:
1641: (defun forth-documentation (function)
1642: "Display the full documentation of FORTH word."
1643: (interactive
1644: (let ((fn (forth-function-called-at-point))
1645: (enable-recursive-minibuffers t)
1646: search-list
1647: val)
1648: (setq val (read-string (format "Describe forth word (default %s): " fn)))
1649: (list (if (equal val "") fn val))))
1650: (forth-get-doc (concat forth-search-command-prefix
1651: (grep-regexp-quote (concat function " ("))
1652: "[^)]*\-\-\" " (forth-help-names-extended)
1653: forth-search-command-suffix))
1654: (message "C-x C-m switches back to the forth interaction window"))
1655:
1656: (defun forth-get-doc (command)
1657: "Display the full documentation of command."
1658: (let ((curwin (get-buffer-window (window-buffer)))
1659: reswin
1660: pointmax)
1661: (with-output-to-temp-buffer forth-help-buffer
1662: (progn
1663: (call-process "sh" nil forth-help-buffer t "-c" command)
1664: (setq reswin (get-buffer-window forth-help-buffer))))
1665: (setq reswin (get-buffer-window forth-help-buffer))
1666: (select-window reswin)
1667: (save-excursion
1668: (goto-char (setq pointmax (point-max)))
1669: (insert "--------------------\n\n"))
1670: (let (fd doc)
1671: (while (setq fd (forth-get-file-data pointmax))
1672: (setq doc (forth-get-doc-string fd))
1673: (save-excursion
1674: (goto-char (point-max))
1675: (insert (substring (car fd) (string-match "[^/]*$" (car fd)))
1676: ":\n\n" doc "\n")))
1677: (if (not doc)
1678: (progn (goto-char (point-max)) (insert "Not found"))))
1679: (select-window curwin)))
1680:
1681: (defun forth-skip-error-lines ()
1682: (let ((lines 0))
1683: (save-excursion
1684: (while (re-search-forward forth-grep-error-regexp nil t)
1685: (beginning-of-line)
1686: (forward-line 1)
1687: (setq lines (1+ lines))))
1688: (forward-line lines)))
1689:
1690: (defun forth-get-doc-string (fd)
1691: "Find file (car fd) and extract documentation from line (nth 1 fd)."
1692: (let (result)
1693: (save-window-excursion
1694: (find-file (car fd))
1695: (goto-line (nth 1 fd))
1696: (if (not (eq (nth 1 fd) (1+ (count-lines (point-min) (point)))))
1697: (error "forth-get-doc-string: serious error"))
1698: (if (not (re-search-backward "\n[\t ]*\n" nil t))
1699: (goto-char (point-min))
1700: (goto-char (match-end 0)))
1701: (let ((p (point)))
1702: (if (not (re-search-forward "\n[\t ]*\n" nil t))
1703: (goto-char (point-max)))
1704: (setq result (buffer-substring p (point))))
1705: (bury-buffer (current-buffer)))
1706: result))
1707:
1708: (defun forth-get-file-data (limit)
1709: "Parse grep output and return '(filename line#) list. Return nil when
1710: passing limit."
1711: (forth-skip-error-lines)
1712: (if (< (point) limit)
1713: (let ((result (forth-get-file-data-cont limit)))
1714: (forward-line 1)
1715: (beginning-of-line)
1716: result)))
1717:
1718: (defun forth-get-file-data-cont (limit)
1719: (let (result)
1720: (let ((p (point)))
1721: (skip-chars-forward "^:")
1722: (setq result (buffer-substring p (point))))
1723: (if (< (point) limit)
1724: (let ((p (1+ (point))))
1725: (forward-char 1)
1726: (skip-chars-forward "^:")
1727: (list result (string-to-int (buffer-substring p (point))))))))
1728:
1729: (defun grep-regexp-quote (str)
1730: (let ((i 0) (m 1) (res ""))
1731: (while (/= m 0)
1732: (setq m (string-to-char (substring str i)))
1733: (if (/= m 0)
1734: (progn
1735: (setq i (1+ i))
1736: (if (string-match (regexp-quote (char-to-string m))
1737: ".*\\^$[]")
1738: (setq res (concat res "\\")))
1739: (setq res (concat res (char-to-string m))))))
1740: res))
1741:
1742:
1743: (define-key forth-mode-map "\C-x\C-e" 'compile)
1744: (define-key forth-mode-map "\C-x\C-n" 'next-error)
1745: (require 'compile "compile")
1746:
1747: (defvar forth-compile-command "gforth ")
1748: ;(defvar forth-compilation-window-percent-height 30)
1749:
1750: (defun forth-compile (command)
1751: (interactive (list (setq forth-compile-command (read-string "Compile command: " forth-compile-command))))
1752: (forth-split-1 "*compilation*")
1753: (setq ctools-compile-command command)
1754: (compile1 ctools-compile-command "No more errors"))
1755:
1756:
1757: ;;; Forth menu
1758: ;;; Mikael Karlsson <qramika@eras70.ericsson.se>
1759:
1760: (cond ((string-match "XEmacs\\|Lucid" emacs-version)
1761: (require 'func-menu)
1762:
1763: (defconst fume-function-name-regexp-forth
1764: "^\\(:\\)[ \t]+\\([^ \t]*\\)"
1765: "Expression to get word definitions in Forth.")
1766:
1767: (setq fume-function-name-regexp-alist
1768: (append '((forth-mode . fume-function-name-regexp-forth)
1769: ) fume-function-name-regexp-alist))
1770:
1771: ;; Find next forth word in the buffer
1772: (defun fume-find-next-forth-function-name (buffer)
1773: "Searches for the next forth word in BUFFER."
1774: (set-buffer buffer)
1775: (if (re-search-forward fume-function-name-regexp nil t)
1776: (let ((beg (match-beginning 2))
1777: (end (match-end 2)))
1778: (cons (buffer-substring beg end) beg))))
1779:
1780: (setq fume-find-function-name-method-alist
1781: (append '((forth-mode . fume-find-next-forth-function-name))))
1782:
1783: ))
1784: ;;; End Forth menu
1785:
1786: ;;; File folding of forth-files
1787: ;;; uses outline
1788: ;;; Toggle activation with M-x fold-f (when editing a forth-file)
1789: ;;; Use f9 to expand, f10 to hide, Or the menubar in xemacs
1790: ;;;
1791: ;;; Works most of the times but loses sync with the cursor occasionally
1792: ;;; Could be improved by also folding on comments
1793:
1794: (require 'outline)
1795:
1796: (defun f-outline-level ()
1797: (cond ((looking-at "\\`\\\\")
1798: 0)
1799: ((looking-at "\\\\ SEC")
1800: 0)
1801: ((looking-at "\\\\ \\\\ .*")
1802: 0)
1803: ((looking-at "\\\\ DEFS")
1804: 1)
1805: ((looking-at "\\/\\* ")
1806: 1)
1807: ((looking-at ": .*")
1808: 1)
1809: ((looking-at "\\\\G")
1810: 2)
1811: ((looking-at "[ \t]+\\\\")
1812: 3))
1813: )
1814:
1815: (defun fold-f ()
1816: (interactive)
1817: (add-hook 'outline-minor-mode-hook 'hide-body)
1818:
1819: ; outline mode header start, i.e. find word definitions
1820: ;;; (setq outline-regexp "^\\(:\\)[ \t]+\\([^ \t]*\\)")
1821: (setq outline-regexp "\\`\\\\\\|:\\|\\\\ SEC\\|\\\\G\\|[ \t]+\\\\\\|\\\\ DEFS\\|\\/\\*\\|\\\\ \\\\ .*")
1822: (setq outline-level 'f-outline-level)
1823:
1824: (outline-minor-mode)
1825: (define-key outline-minor-mode-map '(shift up) 'hide-sublevels)
1826: (define-key outline-minor-mode-map '(shift right) 'show-children)
1827: (define-key outline-minor-mode-map '(shift left) 'hide-subtree)
1828: (define-key outline-minor-mode-map '(shift down) 'show-subtree)
1829:
1830: )
1831:
1832: ;;(define-key global-map '(shift up) 'fold-f)
1833:
1834: ;;; end file folding
1835:
1836: ;;; func-menu is a package that scans your source file for function definitions
1837: ;;; and makes a menubar entry that lets you jump to any particular function
1838: ;;; definition by selecting it from the menu. The following code turns this on
1839: ;;; for all of the recognized languages. Scanning the buffer takes some time,
1840: ;;; but not much.
1841: ;;;
1842: (cond ((string-match "XEmacs\\|Lucid" emacs-version)
1843: (require 'func-menu)
1844: ;; (define-key global-map 'f8 'function-menu)
1845: (add-hook 'find-fible-hooks 'fume-add-menubar-entry)
1846: ; (define-key global-map "\C-cg" 'fume-prompt-function-goto)
1847: ; (define-key global-map '(shift button3) 'mouse-function-menu)
1848: ))
1849:
1850: ;;; gforth.el ends here
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