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: (defun forth-next-definition-starter ()
532: (progn
533: (let* ((regexp (car forth-compiled-defining-words))
534: (pos (re-search-forward regexp (point-max) t)))
535: (message "regexp: %s pos:%s" regexp pos)
536: (if pos
537: (if (or (text-property-not-all (match-beginning 0) (match-end 0)
538: 'forth-parsed nil)
539: (text-property-not-all (match-beginning 0) (match-end 0)
540: 'forth-state nil))
541: (forth-next-definition-starter)
542: t)
543: nil))))
544:
545: (defun forth-create-index ()
546: (let* ((defwords
547: (forth-filter (lambda (word)
548: (and (eq (nth 1 word) 'definition-starter)
549: (> (length word) 3)))
550: forth-words))
551: (forth-compiled-defining-words (forth-compile-wordlist defwords))
552: (index nil))
553: (goto-char (point-min))
554: (while (forth-next-definition-starter)
555: (if (looking-at "[ \t]*\\([^ \t\n]+\\)")
556: (setq index (cons (cons (match-string 1) (point)) index))))
557: (message "index: %s" index)
558: index))
559:
560: (speedbar-add-supported-extension ".fs")
561: (speedbar-add-supported-extension ".fb")
562:
563: ;; (require 'profile)
564: ;; (setq profile-functions-list '(forth-set-word-properties forth-next-known-forth-word forth-update-properties forth-delete-properties forth-get-regexp-branch))
565:
566: ;;; Indentation
567: ;;;
568:
569: (defvar forth-indent-words nil
570: "List of words that have indentation behaviour.
571: Each element of `forth-indent-words' should have the form
572: (MATCHER INDENT1 INDENT2)
573:
574: MATCHER is either a list of strings to match, or a REGEXP.
575: If it's a REGEXP, it should not be surrounded by `\\<` or `\\>`, since
576: that'll be done automatically by the search routines.
577:
578: INDENT1 specifies how to indent a word that's located at a line's begin,
579: following any number of whitespaces.
580:
581: INDENT2 specifies how to indent words that are not located at a line's begin.
582:
583: INDENT1 and INDENT2 are indentation specifications of the form
584: (SELF-INDENT . NEXT-INDENT), where SELF-INDENT is a numerical value,
585: specifying how the matching line and all following lines are to be
586: indented, relative to previous lines. NEXT-INDENT specifies how to indent
587: following lines, relative to the matching line.
588:
589: Even values of SELF-INDENT and NEXT-INDENT correspond to multiples of
590: `forth-indent-level'. Odd values get an additional
591: `forth-minor-indent-level' added/substracted. Eg a value of -2 indents
592: 1 * forth-indent-level to the left, wheras 3 indents
593: 1 * forth-indent-level + forth-minor-indent-level columns to the right.")
594:
595: (setq forth-indent-words
596: '(((":" ":noname" "code" "if" "begin" "do" "?do" "+do" "-do" "u+do"
597: "u-do" "?dup-if" "?dup-0=-if" "case" "of" "try" "struct"
598: "[if]" "[ifdef]" "[ifundef]" "[begin]" "[for]" "[do]" "[?do]"
599: "class" "interface" "m:" ":m")
600: (0 . 2) (0 . 2))
601: ((";" ";m") (-2 . 0) (0 . -2))
602: (("end-code" "again" "repeat" "then" "endtry" "endcase" "endof"
603: "end-struct" "[then]" "[endif]" "[loop]" "[+loop]" "[next]"
604: "[until]" "[repeat]" "[again]" "end-class" "end-interface"
605: "end-class-noname" "end-interface-noname" "loop"
606: "class;")
607: (-2 . 0) (0 . -2))
608: (("protected" "public" "how:") (-1 . 1) (0 . 0))
609: (("+loop" "-loop" "until") (-2 . 0) (-2 . 0))
610: (("else" "recover" "[else]") (-2 . 2) (0 . 0))
611: (("while" "does>" "[while]") (-1 . 1) (0 . 0))
612: (("\\g") (-2 . 2) (0 . 0))))
613:
614: (defvar forth-local-indent-words nil
615: "List of Forth words to prepend to `forth-indent-words', when a forth-mode
616: buffer is created. Should be set by a Forth source, using a local variables
617: list at the end of the file (\"Local Variables: ... forth-local-words: ...
618: End:\" construct).")
619:
620: (defvar forth-custom-indent-words nil
621: "List of Forth words to prepend to `forth-indent-words'. Should be set in
622: your .emacs.")
623:
624: (defvar forth-indent-level 4
625: "Indentation of Forth statements.")
626: (defvar forth-minor-indent-level 2
627: "Minor indentation of Forth statements.")
628: (defvar forth-compiled-indent-words nil)
629:
630: ;; Return, whether `pos' is the first forth word on its line
631: (defun forth-first-word-on-line-p (pos)
632: (save-excursion
633: (beginning-of-line)
634: (skip-chars-forward " \t")
635: (= pos (point))))
636:
637: ;; Return indentation data (SELF-INDENT . NEXT-INDENT) of next known
638: ;; indentation word, or nil if there is no word up to `to'.
639: ;; Position `point' at location just after found word, or at `to'. Parsed
640: ;; ranges of text will not be taken into consideration!
641: (defun forth-next-known-indent-word (to)
642: (if (<= (point) to)
643: (progn
644: (let* ((regexp (car forth-compiled-indent-words))
645: (pos (re-search-forward regexp to t)))
646: (if pos
647: (if (text-property-not-all (match-beginning 0) (match-end 0)
648: 'forth-parsed nil)
649: (forth-next-known-indent-word to)
650: (let* ((branch (forth-get-regexp-branch))
651: (descr (cdr forth-compiled-indent-words))
652: (indent (cdr (assoc branch descr))))
653: (if (forth-first-word-on-line-p (match-beginning 0))
654: (nth 0 indent) (nth 1 indent))))
655: nil)))
656: nil))
657:
658: ;; Translate indentation value `indent' to indentation column. Multiples of
659: ;; 2 correspond to multiples of `forth-indent-level'. Odd numbers get an
660: ;; additional `forth-minor-indent-level' added (or substracted).
661: (defun forth-convert-to-column (indent)
662: (let* ((sign (if (< indent 0) -1 1))
663: (value (abs indent))
664: (major (* (/ value 2) forth-indent-level))
665: (minor (* (% value 2) forth-minor-indent-level)))
666: (* sign (+ major minor))))
667:
668: ;; Return the column increment, that the current line of forth code does to
669: ;; the current or following lines. `which' specifies which indentation values
670: ;; to use. 0 means the indentation of following lines relative to current
671: ;; line, 1 means the indentation of the current line relative to the previous
672: ;; line. Return `nil', if there are no indentation words on the current line.
673: (defun forth-get-column-incr (which)
674: (save-excursion
675: (let ((regexp (car forth-compiled-indent-words))
676: (word-indent)
677: (self-indent nil)
678: (next-indent nil)
679: (to (save-excursion (end-of-line) (point))))
680: (beginning-of-line)
681: (while (setq word-indent (forth-next-known-indent-word to))
682: (let* ((self-incr (car word-indent))
683: (next-incr (cdr word-indent))
684: (self-column-incr (forth-convert-to-column self-incr))
685: (next-column-incr (forth-convert-to-column next-incr)))
686: (setq next-indent (if next-indent next-indent 0))
687: (setq self-indent (if self-indent self-indent 0))
688: (if (or (and (> next-indent 0) (< self-column-incr 0))
689: (and (< next-indent 0) (> self-column-incr 0)))
690: (setq next-indent (+ next-indent self-column-incr))
691: (setq self-indent (+ self-indent self-column-incr)))
692: (setq next-indent (+ next-indent next-column-incr))))
693: (nth which (list self-indent next-indent)))))
694:
695: ;; Find previous line that contains indentation words, return the column,
696: ;; to which following text should be indented to.
697: (defun forth-get-anchor-column ()
698: (save-excursion
699: (if (/= 0 (forward-line -1)) 0
700: (let ((next-indent)
701: (self-indent))
702: (while (not (or (setq indent (forth-get-column-incr 1))
703: (<= (point) (point-min))))
704: (forward-line -1))
705: (+ (current-indentation) (if indent indent 0))))))
706:
707: (defun forth-indent-line (&optional flag)
708: "Correct indentation of the current Forth line."
709: (let* ((anchor (forth-get-anchor-column))
710: (column-incr (forth-get-column-incr 0)))
711: (forth-indent-to (if column-incr (+ anchor column-incr) anchor))))
712:
713: (defun forth-current-column ()
714: (- (point) (save-excursion (beginning-of-line) (point))))
715: (defun forth-current-indentation ()
716: (- (save-excursion (beginning-of-line) (forward-to-indentation 0) (point))
717: (save-excursion (beginning-of-line) (point))))
718:
719: (defun forth-indent-to (x)
720: (let ((p nil))
721: (setq p (- (forth-current-column) (forth-current-indentation)))
722: (forth-delete-indentation)
723: (beginning-of-line)
724: (indent-to x)
725: (if (> p 0) (forward-char p))))
726:
727: (defun forth-delete-indentation ()
728: (save-excursion
729: (delete-region
730: (progn (beginning-of-line) (point))
731: (progn (back-to-indentation) (point)))))
732:
733: (defun forth-indent-command ()
734: (interactive)
735: (forth-indent-line t))
736:
737: ;; remove trailing whitespaces in current line
738: (defun forth-remove-trailing ()
739: (save-excursion
740: (end-of-line)
741: (delete-region (point) (progn (skip-chars-backward " \t") (point)))))
742:
743: ;; insert newline, removing any trailing whitespaces in the current line
744: (defun forth-newline-remove-trailing ()
745: (save-excursion
746: (delete-region (point) (progn (skip-chars-backward " \t") (point))))
747: (newline))
748: ; (let ((was-point (point-marker)))
749: ; (unwind-protect
750: ; (progn (forward-line -1) (forth-remove-trailing))
751: ; (goto-char (was-point)))))
752:
753: ;; workaround for bug in `reindent-then-newline-and-indent'
754: (defun forth-reindent-then-newline-and-indent ()
755: (interactive "*")
756: (indent-according-to-mode)
757: (forth-newline-remove-trailing)
758: (indent-according-to-mode))
759:
760: ;;; end hilighting/indentation
761:
762: ;;; Block file encoding/decoding (dk)
763: ;;;
764:
765: (defconst forth-c/l 64 "Number of characters per block line")
766: (defconst forth-l/b 16 "Number of lines per block")
767:
768: ;; Check whether the unconverted block file line, point is in, does not
769: ;; contain `\n' and `\t' characters.
770: (defun forth-check-block-line (line)
771: (let ((end (save-excursion (beginning-of-line) (forward-char forth-c/l)
772: (point))))
773: (save-excursion
774: (beginning-of-line)
775: (when (search-forward "\n" end t)
776: (message "Warning: line %i contains newline character #10" line)
777: (ding t))
778: (beginning-of-line)
779: (when (search-forward "\t" end t)
780: (message "Warning: line %i contains tab character #8" line)
781: (ding t)))))
782:
783: (defun forth-convert-from-block (from to)
784: "Convert block file format to stream source in current buffer."
785: (let ((line (count-lines (point-min) from)))
786: (save-excursion
787: (goto-char from)
788: (set-mark to)
789: (while (< (+ (point) forth-c/l) (mark t))
790: (setq line (1+ line))
791: (forth-check-block-line line)
792: (forward-char forth-c/l)
793: (forth-newline-remove-trailing))
794: (when (= (+ (point) forth-c/l) (mark t))
795: (forth-remove-trailing))
796: (mark t))))
797:
798: ;; Pad a line of a block file up to `forth-c/l' characters, positioning `point'
799: ;; at the end of line.
800: (defun forth-pad-block-line ()
801: (save-excursion
802: (end-of-line)
803: (if (<= (current-column) forth-c/l)
804: (move-to-column forth-c/l t)
805: (message "Line %i longer than %i characters, truncated"
806: (count-lines (point-min) (point)) forth-c/l)
807: (ding t)
808: (move-to-column forth-c/l t)
809: (delete-region (point) (progn (end-of-line) (point))))))
810:
811: ;; Replace tab characters in current line by spaces.
812: (defun forth-convert-tabs-in-line ()
813: (save-excursion
814: (beginning-of-line)
815: (while (search-forward "\t" (save-excursion (end-of-line) (point)) t)
816: (backward-char)
817: (delete-region (point) (1+ (point)))
818: (insert-char ?\ (- tab-width (% (current-column) tab-width))))))
819:
820: ;; Delete newline at end of current line, concatenating it with the following
821: ;; line. Place `point' at end of newly formed line.
822: (defun forth-delete-newline ()
823: (end-of-line)
824: (delete-region (point) (progn (beginning-of-line 2) (point))))
825:
826: (defun forth-convert-to-block (from to &optional original-buffer)
827: "Convert range of text to block file format in current buffer."
828: (let* ((lines 0)) ; I have to count lines myself, since `count-lines' has
829: ; problems with trailing newlines...
830: (save-excursion
831: (goto-char from)
832: (set-mark to)
833: ;; pad lines to full length (`forth-c/l' characters per line)
834: (while (< (save-excursion (end-of-line) (point)) (mark t))
835: (setq lines (1+ lines))
836: (forth-pad-block-line)
837: (forth-convert-tabs-in-line)
838: (forward-line))
839: ;; also make sure the last line is padded, if `to' is at its end
840: (end-of-line)
841: (when (= (point) (mark t))
842: (setq lines (1+ lines))
843: (forth-pad-block-line)
844: (forth-convert-tabs-in-line))
845: ;; remove newlines between lines
846: (goto-char from)
847: (while (< (save-excursion (end-of-line) (point)) (mark t))
848: (forth-delete-newline))
849: ;; append empty lines, until last block is complete
850: (goto-char (mark t))
851: (let* ((required (* (/ (+ lines (1- forth-l/b)) forth-l/b) forth-l/b))
852: (pad-lines (- required lines)))
853: (while (> pad-lines 0)
854: (insert-char ?\ forth-c/l)
855: (setq pad-lines (1- pad-lines))))
856: (point))))
857:
858: (defun forth-detect-block-file-p ()
859: "Return non-nil if the current buffer is in block file format. Detection is
860: done by checking whether the first line has 1024 characters or more."
861: (save-restriction
862: (widen)
863: (save-excursion
864: (beginning-of-buffer)
865: (end-of-line)
866: (>= (current-column) 1024))))
867:
868: ;; add block file conversion routines to `format-alist'
869: (defconst forth-block-format-description
870: '(forth-blocks "Forth block source file" nil
871: forth-convert-from-block forth-convert-to-block
872: t normal-mode))
873: (unless (memq forth-block-format-description format-alist)
874: (setq format-alist (cons forth-block-format-description format-alist)))
875:
876: ;;; End block file encoding/decoding
877:
878: ;;; Block file editing
879: ;;;
880: (defvar forth-overlay-arrow-string ">>")
881: (defvar forth-block-base 1 "Number of first block in block file")
882: (defvar forth-show-screen nil
883: "Non-nil means to show screen starts and numbers (for block files)")
884: (defvar forth-warn-long-lines nil
885: "Non-nil means to warn about lines that are longer than 64 characters")
886:
887: (defvar forth-screen-marker nil)
888:
889: (defun forth-update-show-screen ()
890: "If `forth-show-screen' is non-nil, put overlay arrow to start of screen,
891: `point' is in. If arrow now points to different screen than before, display
892: screen number."
893: (if (not forth-show-screen)
894: (setq overlay-arrow-string nil)
895: (save-excursion
896: (let* ((line (count-lines (point-min) (min (point-max) (1+ (point)))))
897: (first-line (1+ (* (/ (1- line) forth-l/b) forth-l/b)))
898: (scr (+ forth-block-base (/ first-line forth-l/b))))
899: (setq overlay-arrow-string forth-overlay-arrow-string)
900: (goto-line first-line)
901: (setq overlay-arrow-position forth-screen-marker)
902: (set-marker forth-screen-marker
903: (save-excursion (goto-line first-line) (point)))
904: (setq forth-screen-number-string (format "%d" scr))))))
905:
906: (add-hook 'forth-motion-hooks 'forth-update-show-screen)
907:
908: (defun forth-update-warn-long-lines ()
909: "If `forth-warn-long-lines' is non-nil, display a warning whenever a line
910: exceeds 64 characters."
911: (when forth-warn-long-lines
912: (when (> (save-excursion (end-of-line) (current-column)) forth-c/l)
913: (message "Warning: current line exceeds %i characters"
914: forth-c/l))))
915:
916: (add-hook 'forth-motion-hooks 'forth-update-warn-long-lines)
917:
918: ;;; End block file editing
919:
920:
921: (defvar forth-mode-abbrev-table nil
922: "Abbrev table in use in Forth-mode buffers.")
923:
924: (define-abbrev-table 'forth-mode-abbrev-table ())
925:
926: (defvar forth-mode-map nil
927: "Keymap used in Forth mode.")
928:
929: (if (not forth-mode-map)
930: (setq forth-mode-map (make-sparse-keymap)))
931:
932: ;(define-key forth-mode-map "\M-\C-x" 'compile)
933: (define-key forth-mode-map "\C-x\\" 'comment-region)
934: (define-key forth-mode-map "\C-x~" 'forth-remove-tracers)
935: (define-key forth-mode-map "\e\C-m" 'forth-send-paragraph)
936: (define-key forth-mode-map "\eo" 'forth-send-buffer)
937: (define-key forth-mode-map "\C-x\C-m" 'forth-split)
938: (define-key forth-mode-map "\e " 'forth-reload)
939: (define-key forth-mode-map "\t" 'forth-indent-command)
940: (define-key forth-mode-map "\C-m" 'forth-reindent-then-newline-and-indent)
941: (define-key forth-mode-map "\M-q" 'forth-fill-paragraph)
942: (define-key forth-mode-map "\e." 'forth-find-tag)
943:
944: ;;; hook into motion events (realy ugly!) (dk)
945: (define-key forth-mode-map "\C-n" 'forth-next-line)
946: (define-key forth-mode-map "\C-p" 'forth-previous-line)
947: (define-key forth-mode-map [down] 'forth-next-line)
948: (define-key forth-mode-map [up] 'forth-previous-line)
949: (define-key forth-mode-map "\C-f" 'forth-forward-char)
950: (define-key forth-mode-map "\C-b" 'forth-backward-char)
951: (define-key forth-mode-map [right] 'forth-forward-char)
952: (define-key forth-mode-map [left] 'forth-backward-char)
953: (define-key forth-mode-map "\M-f" 'forth-forward-word)
954: (define-key forth-mode-map "\M-b" 'forth-backward-word)
955: (define-key forth-mode-map [C-right] 'forth-forward-word)
956: (define-key forth-mode-map [C-left] 'forth-backward-word)
957: (define-key forth-mode-map "\M-v" 'forth-scroll-down)
958: (define-key forth-mode-map "\C-v" 'forth-scroll-up)
959: (define-key forth-mode-map [prior] 'forth-scroll-down)
960: (define-key forth-mode-map [next] 'forth-scroll-up)
961:
962: (defun forth-next-line (arg)
963: (interactive "p") (next-line arg) (run-hooks 'forth-motion-hooks))
964: (defun forth-previous-line (arg)
965: (interactive "p") (previous-line arg) (run-hooks 'forth-motion-hooks))
966: (defun forth-backward-char (arg)
967: (interactive "p") (backward-char arg) (run-hooks 'forth-motion-hooks))
968: (defun forth-forward-char (arg)
969: (interactive "p") (forward-char arg) (run-hooks 'forth-motion-hooks))
970: (defun forth-forward-word (arg)
971: (interactive "p") (forward-word arg) (run-hooks 'forth-motion-hooks))
972: (defun forth-backward-word (arg)
973: (interactive "p") (backward-word arg) (run-hooks 'forth-motion-hooks))
974: (defun forth-scroll-down (arg)
975: (interactive "P") (scroll-down arg) (run-hooks 'forth-motion-hooks))
976: (defun forth-scroll-up (arg)
977: (interactive "P") (scroll-up arg) (run-hooks 'forth-motion-hooks))
978:
979: ;setup for C-h C-i to work
980: (if (fboundp 'info-lookup-add-help)
981: (info-lookup-add-help
982: :topic 'symbol
983: :mode 'forth-mode
984: :regexp "[^
985: ]+"
986: :ignore-case t
987: :doc-spec '(("(gforth)Name Index" nil "`" "' "))))
988:
989: (load "etags")
990:
991: (defun forth-find-tag (tagname &optional next-p regexp-p)
992: (interactive (find-tag-interactive "Find tag: "))
993: (switch-to-buffer
994: (find-tag-noselect (concat " " tagname " ") next-p regexp-p)))
995:
996: (defvar forth-mode-syntax-table nil
997: "Syntax table in use in Forth-mode buffers.")
998:
999: ;; Important: hilighting/indentation now depends on a correct syntax table.
1000: ;; All characters, except whitespace *must* belong to the "word constituent"
1001: ;; syntax class. If different behaviour is required, use of Categories might
1002: ;; help.
1003: (if (not forth-mode-syntax-table)
1004: (progn
1005: (setq forth-mode-syntax-table (make-syntax-table))
1006: (let ((char 0))
1007: (while (< char ?!)
1008: (modify-syntax-entry char " " forth-mode-syntax-table)
1009: (setq char (1+ char)))
1010: (while (< char 256)
1011: (modify-syntax-entry char "w" forth-mode-syntax-table)
1012: (setq char (1+ char))))
1013: ))
1014:
1015:
1016: (defun forth-mode-variables ()
1017: (set-syntax-table forth-mode-syntax-table)
1018: (setq local-abbrev-table forth-mode-abbrev-table)
1019: (make-local-variable 'paragraph-start)
1020: (setq paragraph-start (concat "^$\\|" page-delimiter))
1021: (make-local-variable 'paragraph-separate)
1022: (setq paragraph-separate paragraph-start)
1023: (make-local-variable 'indent-line-function)
1024: (setq indent-line-function 'forth-indent-line)
1025: ; (make-local-variable 'require-final-newline)
1026: ; (setq require-final-newline t)
1027: (make-local-variable 'comment-start)
1028: (setq comment-start "\\ ")
1029: ;(make-local-variable 'comment-end)
1030: ;(setq comment-end " )")
1031: (make-local-variable 'comment-column)
1032: (setq comment-column 40)
1033: (make-local-variable 'comment-start-skip)
1034: (setq comment-start-skip "\\ ")
1035: (make-local-variable 'comment-indent-hook)
1036: (setq comment-indent-hook 'forth-comment-indent)
1037: (make-local-variable 'parse-sexp-ignore-comments)
1038: (setq parse-sexp-ignore-comments t)
1039: (setq case-fold-search t)
1040: (make-local-variable 'forth-words)
1041: (make-local-variable 'forth-compiled-words)
1042: (make-local-variable 'forth-compiled-indent-words)
1043: (make-local-variable 'forth-hilight-level)
1044: (make-local-variable 'after-change-functions)
1045: (make-local-variable 'forth-show-screen)
1046: (make-local-variable 'forth-screen-marker)
1047: (make-local-variable 'forth-warn-long-lines)
1048: (make-local-variable 'forth-screen-number-string)
1049: (make-local-variable 'forth-use-oof)
1050: (make-local-variable 'forth-use-objects)
1051: (setq forth-screen-marker (copy-marker 0))
1052: (add-hook 'after-change-functions 'forth-change-function)
1053: (setq imenu-create-index-function 'forth-create-index))
1054:
1055: ;;;###autoload
1056: (defun forth-mode ()
1057: "
1058: Major mode for editing Forth code. Tab indents for Forth code. Comments
1059: are delimited with \\ and newline. Paragraphs are separated by blank lines
1060: only. Block files are autodetected, when read, and converted to normal
1061: stream source format. See also `forth-block-mode'.
1062: \\{forth-mode-map}
1063: Forth-split
1064: Positions the current buffer on top and a forth-interaction window
1065: below. The window size is controlled by the forth-percent-height
1066: variable (see below).
1067: Forth-reload
1068: Reloads the forth library and restarts the forth process.
1069: Forth-send-buffer
1070: Sends the current buffer, in text representation, as input to the
1071: forth process.
1072: Forth-send-paragraph
1073: Sends the previous or the current paragraph to the forth-process.
1074: Note that the cursor only need to be with in the paragraph to be sent.
1075: forth-documentation
1076: Search for documentation of forward adjacent to cursor. Note! To use
1077: this mode you have to add a line, to your .emacs file, defining the
1078: directories to search through for documentation files (se variable
1079: forth-help-load-path below) e.g. (setq forth-help-load-path '(nil)).
1080:
1081: Variables controlling interaction and startup
1082: forth-percent-height
1083: Tells split how high to make the edit portion, in percent of the
1084: current screen height.
1085: forth-program-name
1086: Tells the library which program name to execute in the interation
1087: window.
1088:
1089: Variables controlling syntax hilighting/recognition of parsed text:
1090: `forth-words'
1091: List of words that have a special parsing behaviour and/or should be
1092: hilighted. Add custom words by setting forth-custom-words in your
1093: .emacs, or by setting forth-local-words, in source-files' local
1094: variables lists.
1095: forth-use-objects
1096: Set this variable to non-nil in your .emacs, or a local variables
1097: list, to hilight and recognize the words from the \"Objects\" package
1098: for object-oriented programming.
1099: forth-use-oof
1100: Same as above, just for the \"OOF\" package.
1101: forth-custom-words
1102: List of custom Forth words to prepend to `forth-words'. Should be set
1103: in your .emacs.
1104: forth-local-words
1105: List of words to prepend to `forth-words', whenever a forth-mode
1106: buffer is created. That variable should be set by Forth sources, using
1107: a local variables list at the end of file, to get file-specific
1108: hilighting.
1109: 0 [IF]
1110: Local Variables: ...
1111: forth-local-words: ...
1112: End:
1113: [THEN]
1114: forth-hilight-level
1115: Controls how much syntax hilighting is done. Should be in the range
1116: 0..3
1117:
1118: Variables controlling indentation style:
1119: `forth-indent-words'
1120: List of words that influence indentation.
1121: forth-local-indent-words
1122: List of words to prepend to `forth-indent-words', similar to
1123: forth-local-words. Should be used for specifying file-specific
1124: indentation, using a local variables list.
1125: forth-custom-indent-words
1126: List of words to prepend to `forth-indent-words'. Should be set in your
1127: .emacs.
1128: forth-indent-level
1129: Indentation increment/decrement of Forth statements.
1130: forth-minor-indent-level
1131: Minor indentation increment/decrement of Forth statemens.
1132:
1133: Variables controlling block-file editing:
1134: forth-show-screen
1135: Non-nil means, that the start of the current screen is marked by an
1136: overlay arrow, and screen numbers are displayed in the mode line.
1137: This variable is by default nil for `forth-mode' and t for
1138: `forth-block-mode'.
1139: forth-overlay-arrow-string
1140: String to display as the overlay arrow, when `forth-show-screen' is t.
1141: Setting this variable to nil disables the overlay arrow.
1142: forth-block-base
1143: Screen number of the first block in a block file. Defaults to 1.
1144: forth-warn-long-lines
1145: Non-nil means that a warning message is displayed whenever you edit or
1146: move over a line that is longer than 64 characters (the maximum line
1147: length that can be stored into a block file). This variable defaults to
1148: t for `forth-block-mode' and to nil for `forth-mode'.
1149:
1150: Variables controling documentation search
1151: forth-help-load-path
1152: List of directories to search through to find *.doc
1153: (forth-help-file-suffix) files. Nil means current default directory.
1154: The specified directories must contain at least one .doc file. If it
1155: does not and you still want the load-path to scan that directory, create
1156: an empty file dummy.doc.
1157: forth-help-file-suffix
1158: The file names to search for in each directory specified by
1159: forth-help-load-path. Defaulted to '*.doc'.
1160: "
1161: (interactive)
1162: (kill-all-local-variables)
1163: (use-local-map forth-mode-map)
1164: (setq mode-name "Forth")
1165: (setq major-mode 'forth-mode)
1166: ;; convert buffer contents from block file format, if necessary
1167: (when (forth-detect-block-file-p)
1168: (widen)
1169: (message "Converting from Forth block source...")
1170: (forth-convert-from-block (point-min) (point-max))
1171: (message "Converting from Forth block source...done"))
1172: ;; if user switched from forth-block-mode to forth-mode, make sure the file
1173: ;; is now stored as normal strem source
1174: (when (equal buffer-file-format '(forth-blocks))
1175: (setq buffer-file-format nil))
1176: (forth-mode-variables)
1177: ; (if (not (forth-process-running-p))
1178: ; (run-forth forth-program-name))
1179: (run-hooks 'forth-mode-hook))
1180:
1181: ;;;###autoload
1182: (define-derived-mode forth-block-mode forth-mode "Forth Block Source"
1183: "Major mode for editing Forth block source files, derived from
1184: `forth-mode'. Differences to `forth-mode' are:
1185: * files are converted to block format, when written (`buffer-file-format'
1186: is set to `(forth-blocks)')
1187: * `forth-show-screen' and `forth-warn-long-lines' are t by default
1188:
1189: Note that the length of lines in block files is limited to 64 characters.
1190: When writing longer lines to a block file, a warning is displayed in the
1191: echo area and the line is truncated.
1192:
1193: Another problem is imposed by block files that contain newline or tab
1194: characters. When Emacs converts such files back to block file format,
1195: it'll translate those characters to a number of spaces. However, when
1196: you read such a file, a warning message is displayed in the echo area,
1197: including a line number that may help you to locate and fix the problem.
1198:
1199: So have a look at the *Messages* buffer, whenever you hear (or see) Emacs'
1200: bell during block file read/write operations."
1201: (setq buffer-file-format '(forth-blocks))
1202: (setq forth-show-screen t)
1203: (setq forth-warn-long-lines t)
1204: (setq forth-screen-number-string (format "%d" forth-block-base))
1205: (setq mode-line-format (append (reverse (cdr (reverse mode-line-format)))
1206: '("--S" forth-screen-number-string "-%-"))))
1207:
1208: (add-hook 'forth-mode-hook
1209: '(lambda ()
1210: (make-local-variable 'compile-command)
1211: (setq compile-command "gforth ")
1212: (forth-hack-local-variables)
1213: (forth-customize-words)
1214: (forth-compile-words)
1215: (forth-change-function (point-min) (point-max) nil t)))
1216:
1217: (defun forth-fill-paragraph ()
1218: "Fill comments (starting with '\'; do not fill code (block style
1219: programmers who tend to fill code won't use emacs anyway:-)."
1220: ; Currently only comments at the start of the line are filled.
1221: ; Something like lisp-fill-paragraph may be better. We cannot use
1222: ; fill-paragraph, because it removes the \ from the first comment
1223: ; line. Therefore we have to look for the first line of the comment
1224: ; and use fill-region.
1225: (interactive)
1226: (save-excursion
1227: (beginning-of-line)
1228: (while (and
1229: (= (forward-line -1) 0)
1230: (looking-at "[ \t]*\\\\g?[ \t]+")))
1231: (if (not (looking-at "[ \t]*\\\\g?[ \t]+"))
1232: (forward-line 1))
1233: (let ((from (point))
1234: (to (save-excursion (forward-paragraph) (point))))
1235: (if (looking-at "[ \t]*\\\\g?[ \t]+")
1236: (progn (goto-char (match-end 0))
1237: (set-fill-prefix)
1238: (fill-region from to nil))))))
1239:
1240: (defun forth-comment-indent ()
1241: (save-excursion
1242: (beginning-of-line)
1243: (if (looking-at ":[ \t]*")
1244: (progn
1245: (end-of-line)
1246: (skip-chars-backward " \t\n")
1247: (1+ (current-column)))
1248: comment-column)))
1249:
1250:
1251: ;; Forth commands
1252:
1253: (defun forth-remove-tracers ()
1254: "Remove tracers of the form `~~ '. Queries the user for each occurrence."
1255: (interactive)
1256: (query-replace-regexp "\\(~~ \\| ~~$\\)" "" nil))
1257:
1258: (defvar forth-program-name "gforth"
1259: "*Program invoked by the `run-forth' command.")
1260:
1261: (defvar forth-band-name nil
1262: "*Band loaded by the `run-forth' command.")
1263:
1264: (defvar forth-program-arguments nil
1265: "*Arguments passed to the Forth program by the `run-forth' command.")
1266:
1267: (defun run-forth (command-line)
1268: "Run an inferior Forth process. Output goes to the buffer `*forth*'.
1269: With argument, asks for a command line. Split up screen and run forth
1270: in the lower portion. The current-buffer when called will stay in the
1271: upper portion of the screen, and all other windows are deleted.
1272: Call run-forth again to make the *forth* buffer appear in the lower
1273: part of the screen."
1274: (interactive
1275: (list (let ((default
1276: (or forth-process-command-line
1277: (forth-default-command-line))))
1278: (if current-prefix-arg
1279: (read-string "Run Forth: " default)
1280: default))))
1281: (setq forth-process-command-line command-line)
1282: (forth-start-process command-line)
1283: (forth-split)
1284: (forth-set-runlight forth-runlight:input))
1285:
1286: (defun run-forth-if-not ()
1287: (if (not (forth-process-running-p))
1288: (run-forth forth-program-name)))
1289:
1290: (defun reset-forth ()
1291: "Reset the Forth process."
1292: (interactive)
1293: (let ((process (get-process forth-program-name)))
1294: (cond ((or (not process)
1295: (not (eq (process-status process) 'run))
1296: (yes-or-no-p
1297: "The Forth process is running, are you SURE you want to reset it? "))
1298: (message "Resetting Forth process...")
1299: (forth-reload)
1300: (message "Resetting Forth process...done")))))
1301:
1302: (defun forth-default-command-line ()
1303: (concat forth-program-name
1304: (if forth-program-arguments
1305: (concat " " forth-program-arguments)
1306: "")))
1307:
1308: ;;;; Internal Variables
1309:
1310: (defvar forth-process-command-line nil
1311: "Command used to start the most recent Forth process.")
1312:
1313: (defvar forth-previous-send ""
1314: "Most recent expression transmitted to the Forth process.")
1315:
1316: (defvar forth-process-filter-queue '()
1317: "Queue used to synchronize filter actions properly.")
1318:
1319: (defvar forth-prompt "ok"
1320: "The current forth prompt string.")
1321:
1322: (defvar forth-start-hook nil
1323: "If non-nil, a procedure to call when the Forth process is started.
1324: When called, the current buffer will be the Forth process-buffer.")
1325:
1326: (defvar forth-signal-death-message nil
1327: "If non-nil, causes a message to be generated when the Forth process dies.")
1328:
1329: (defvar forth-percent-height 50
1330: "Tells run-forth how high the upper window should be in percent.")
1331:
1332: (defconst forth-runlight:input ?I
1333: "The character displayed when the Forth process is waiting for input.")
1334:
1335: (defvar forth-mode-string ""
1336: "String displayed in the mode line when the Forth process is running.")
1337:
1338: ;;;; Evaluation Commands
1339:
1340: (defun forth-send-string (&rest strings)
1341: "Send the string arguments to the Forth process.
1342: The strings are concatenated and terminated by a newline."
1343: (cond ((forth-process-running-p)
1344: (forth-send-string-1 strings))
1345: ((yes-or-no-p "The Forth process has died. Reset it? ")
1346: (reset-forth)
1347: (goto-char (point-max))
1348: (forth-send-string-1 strings))))
1349:
1350: (defun forth-send-string-1 (strings)
1351: (let ((string (apply 'concat strings)))
1352: (forth-send-string-2 string)))
1353:
1354: (defun forth-send-string-2 (string)
1355: (let ((process (get-process forth-program-name)))
1356: (if (not (eq (current-buffer) (get-buffer forth-program-name)))
1357: (progn
1358: (forth-process-filter-output string)
1359: (forth-process-filter:finish)))
1360: (send-string process (concat string "\n"))
1361: (if (eq (current-buffer) (process-buffer process))
1362: (set-marker (process-mark process) (point)))))
1363:
1364:
1365: (defun forth-send-region (start end)
1366: "Send the current region to the Forth process.
1367: The region is sent terminated by a newline."
1368: (interactive "r")
1369: (let ((process (get-process forth-program-name)))
1370: (if (and process (eq (current-buffer) (process-buffer process)))
1371: (progn (goto-char end)
1372: (set-marker (process-mark process) end))))
1373: (forth-send-string "\n" (buffer-substring start end) "\n"))
1374:
1375: (defun forth-end-of-paragraph ()
1376: (if (looking-at "[\t\n ]+") (skip-chars-backward "\t\n "))
1377: (if (not (re-search-forward "\n[ \t]*\n" nil t))
1378: (goto-char (point-max))))
1379:
1380: (defun forth-send-paragraph ()
1381: "Send the current or the previous paragraph to the Forth process"
1382: (interactive)
1383: (let (end)
1384: (save-excursion
1385: (forth-end-of-paragraph)
1386: (skip-chars-backward "\t\n ")
1387: (setq end (point))
1388: (if (re-search-backward "\n[ \t]*\n" nil t)
1389: (setq start (point))
1390: (goto-char (point-min)))
1391: (skip-chars-forward "\t\n ")
1392: (forth-send-region (point) end))))
1393:
1394: (defun forth-send-buffer ()
1395: "Send the current buffer to the Forth process."
1396: (interactive)
1397: (if (eq (current-buffer) (forth-process-buffer))
1398: (error "Not allowed to send this buffer's contents to Forth"))
1399: (forth-send-region (point-min) (point-max)))
1400:
1401:
1402: ;;;; Basic Process Control
1403:
1404: (defun forth-start-process (command-line)
1405: (let ((buffer (get-buffer-create "*forth*")))
1406: (let ((process (get-buffer-process buffer)))
1407: (save-excursion
1408: (set-buffer buffer)
1409: (progn (if process (delete-process process))
1410: (goto-char (point-max))
1411: (setq mode-line-process '(": %s"))
1412: (add-to-global-mode-string 'forth-mode-string)
1413: (setq process
1414: (apply 'start-process
1415: (cons forth-program-name
1416: (cons buffer
1417: (forth-parse-command-line
1418: command-line)))))
1419: (set-marker (process-mark process) (point-max))
1420: (forth-process-filter-initialize t)
1421: (forth-modeline-initialize)
1422: (set-process-sentinel process 'forth-process-sentinel)
1423: (set-process-filter process 'forth-process-filter)
1424: (run-hooks 'forth-start-hook)))
1425: buffer)))
1426:
1427: (defun forth-parse-command-line (string)
1428: (setq string (substitute-in-file-name string))
1429: (let ((start 0)
1430: (result '()))
1431: (while start
1432: (let ((index (string-match "[ \t]" string start)))
1433: (setq start
1434: (cond ((not index)
1435: (setq result
1436: (cons (substring string start)
1437: result))
1438: nil)
1439: ((= index start)
1440: (string-match "[^ \t]" string start))
1441: (t
1442: (setq result
1443: (cons (substring string start index)
1444: result))
1445: (1+ index))))))
1446: (nreverse result)))
1447:
1448:
1449: (defun forth-process-running-p ()
1450: "True iff there is a Forth process whose status is `run'."
1451: (let ((process (get-process forth-program-name)))
1452: (and process
1453: (eq (process-status process) 'run))))
1454:
1455: (defun forth-process-buffer ()
1456: (let ((process (get-process forth-program-name)))
1457: (and process (process-buffer process))))
1458:
1459: ;;;; Process Filter
1460:
1461: (defun forth-process-sentinel (proc reason)
1462: (let ((inhibit-quit nil))
1463: (forth-process-filter-initialize (eq reason 'run))
1464: (if (eq reason 'run)
1465: (forth-modeline-initialize)
1466: (setq forth-mode-string "")))
1467: (if (and (not (memq reason '(run stop)))
1468: forth-signal-death-message)
1469: (progn (beep)
1470: (message
1471: "The Forth process has died! Do M-x reset-forth to restart it"))))
1472:
1473: (defun forth-process-filter-initialize (running-p)
1474: (setq forth-process-filter-queue (cons '() '()))
1475: (setq forth-prompt "ok"))
1476:
1477:
1478: (defun forth-process-filter (proc string)
1479: (forth-process-filter-output string)
1480: (forth-process-filter:finish))
1481:
1482: (defun forth-process-filter:enqueue (action)
1483: (let ((next (cons action '())))
1484: (if (cdr forth-process-filter-queue)
1485: (setcdr (cdr forth-process-filter-queue) next)
1486: (setcar forth-process-filter-queue next))
1487: (setcdr forth-process-filter-queue next)))
1488:
1489: (defun forth-process-filter:finish ()
1490: (while (car forth-process-filter-queue)
1491: (let ((next (car forth-process-filter-queue)))
1492: (setcar forth-process-filter-queue (cdr next))
1493: (if (not (cdr next))
1494: (setcdr forth-process-filter-queue '()))
1495: (apply (car (car next)) (cdr (car next))))))
1496:
1497: ;;;; Process Filter Output
1498:
1499: (defun forth-process-filter-output (&rest args)
1500: (if (not (and args
1501: (null (cdr args))
1502: (stringp (car args))
1503: (string-equal "" (car args))))
1504: (forth-process-filter:enqueue
1505: (cons 'forth-process-filter-output-1 args))))
1506:
1507: (defun forth-process-filter-output-1 (&rest args)
1508: (save-excursion
1509: (forth-goto-output-point)
1510: (apply 'insert-before-markers args)))
1511:
1512: (defun forth-guarantee-newlines (n)
1513: (save-excursion
1514: (forth-goto-output-point)
1515: (let ((stop nil))
1516: (while (and (not stop)
1517: (bolp))
1518: (setq n (1- n))
1519: (if (bobp)
1520: (setq stop t)
1521: (backward-char))))
1522: (forth-goto-output-point)
1523: (while (> n 0)
1524: (insert-before-markers ?\n)
1525: (setq n (1- n)))))
1526:
1527: (defun forth-goto-output-point ()
1528: (let ((process (get-process forth-program-name)))
1529: (set-buffer (process-buffer process))
1530: (goto-char (process-mark process))))
1531:
1532: (defun forth-modeline-initialize ()
1533: (setq forth-mode-string " "))
1534:
1535: (defun forth-set-runlight (runlight)
1536: (aset forth-mode-string 0 runlight)
1537: (forth-modeline-redisplay))
1538:
1539: (defun forth-modeline-redisplay ()
1540: (save-excursion (set-buffer (other-buffer)))
1541: (set-buffer-modified-p (buffer-modified-p))
1542: (sit-for 0))
1543:
1544: ;;;; Process Filter Operations
1545:
1546: (defun add-to-global-mode-string (x)
1547: (cond ((null global-mode-string)
1548: (setq global-mode-string (list "" x " ")))
1549: ((not (memq x global-mode-string))
1550: (setq global-mode-string
1551: (cons ""
1552: (cons x
1553: (cons " "
1554: (if (equal "" (car global-mode-string))
1555: (cdr global-mode-string)
1556: global-mode-string))))))))
1557:
1558:
1559: ;; Misc
1560:
1561: (setq auto-mode-alist (append auto-mode-alist
1562: '(("\\.fs$" . forth-mode))))
1563:
1564: (defun forth-split ()
1565: (interactive)
1566: (forth-split-1 "*forth*"))
1567:
1568: (defun forth-split-1 (buffer)
1569: (if (not (eq (window-buffer) (get-buffer buffer)))
1570: (progn
1571: (delete-other-windows)
1572: (split-window-vertically
1573: (/ (* (screen-height) forth-percent-height) 100))
1574: (other-window 1)
1575: (switch-to-buffer buffer)
1576: (goto-char (point-max))
1577: (other-window 1))))
1578:
1579: (defun forth-reload ()
1580: (interactive)
1581: (let ((process (get-process forth-program-name)))
1582: (if process (kill-process process t)))
1583: (sleep-for 0 100)
1584: (forth-mode))
1585:
1586:
1587: ;; Special section for forth-help
1588:
1589: (defvar forth-help-buffer "*Forth-help*"
1590: "Buffer used to display the requested documentation.")
1591:
1592: (defvar forth-help-load-path nil
1593: "List of directories to search through to find *.doc
1594: (forth-help-file-suffix) files. Nil means current default directory.
1595: The specified directories must contain at least one .doc file. If it
1596: does not and you still want the load-path to scan that directory, create
1597: an empty file dummy.doc.")
1598:
1599: (defvar forth-help-file-suffix "*.doc"
1600: "The file names to search for in each directory.")
1601:
1602: (setq forth-search-command-prefix "grep -n \"^ [^(]* ")
1603: (defvar forth-search-command-suffix "/dev/null")
1604: (defvar forth-grep-error-regexp ": No such file or directory")
1605:
1606: (defun forth-function-called-at-point ()
1607: "Return the space delimited word a point."
1608: (save-excursion
1609: (save-restriction
1610: (narrow-to-region (max (point-min) (- (point) 1000)) (point-max))
1611: (skip-chars-backward "^ \t\n" (point-min))
1612: (if (looking-at "[ \t\n]")
1613: (forward-char 1))
1614: (let (obj (p (point)))
1615: (skip-chars-forward "^ \t\n")
1616: (buffer-substring p (point))))))
1617:
1618: (defun forth-help-names-extend-comp (path-list result)
1619: (cond ((null path-list) result)
1620: ((null (car path-list))
1621: (forth-help-names-extend-comp (cdr path-list)
1622: (concat result forth-help-file-suffix " ")))
1623: (t (forth-help-names-extend-comp
1624: (cdr path-list) (concat result
1625: (expand-file-name (car path-list)) "/"
1626: forth-help-file-suffix " ")))))
1627:
1628: (defun forth-help-names-extended ()
1629: (if forth-help-load-path
1630: (forth-help-names-extend-comp forth-help-load-path "")
1631: (error "forth-help-load-path not specified")))
1632:
1633:
1634: ;(define-key forth-mode-map "\C-hf" 'forth-documentation)
1635:
1636: (defun forth-documentation (function)
1637: "Display the full documentation of FORTH word."
1638: (interactive
1639: (let ((fn (forth-function-called-at-point))
1640: (enable-recursive-minibuffers t)
1641: search-list
1642: val)
1643: (setq val (read-string (format "Describe forth word (default %s): " fn)))
1644: (list (if (equal val "") fn val))))
1645: (forth-get-doc (concat forth-search-command-prefix
1646: (grep-regexp-quote (concat function " ("))
1647: "[^)]*\-\-\" " (forth-help-names-extended)
1648: forth-search-command-suffix))
1649: (message "C-x C-m switches back to the forth interaction window"))
1650:
1651: (defun forth-get-doc (command)
1652: "Display the full documentation of command."
1653: (let ((curwin (get-buffer-window (window-buffer)))
1654: reswin
1655: pointmax)
1656: (with-output-to-temp-buffer forth-help-buffer
1657: (progn
1658: (call-process "sh" nil forth-help-buffer t "-c" command)
1659: (setq reswin (get-buffer-window forth-help-buffer))))
1660: (setq reswin (get-buffer-window forth-help-buffer))
1661: (select-window reswin)
1662: (save-excursion
1663: (goto-char (setq pointmax (point-max)))
1664: (insert "--------------------\n\n"))
1665: (let (fd doc)
1666: (while (setq fd (forth-get-file-data pointmax))
1667: (setq doc (forth-get-doc-string fd))
1668: (save-excursion
1669: (goto-char (point-max))
1670: (insert (substring (car fd) (string-match "[^/]*$" (car fd)))
1671: ":\n\n" doc "\n")))
1672: (if (not doc)
1673: (progn (goto-char (point-max)) (insert "Not found"))))
1674: (select-window curwin)))
1675:
1676: (defun forth-skip-error-lines ()
1677: (let ((lines 0))
1678: (save-excursion
1679: (while (re-search-forward forth-grep-error-regexp nil t)
1680: (beginning-of-line)
1681: (forward-line 1)
1682: (setq lines (1+ lines))))
1683: (forward-line lines)))
1684:
1685: (defun forth-get-doc-string (fd)
1686: "Find file (car fd) and extract documentation from line (nth 1 fd)."
1687: (let (result)
1688: (save-window-excursion
1689: (find-file (car fd))
1690: (goto-line (nth 1 fd))
1691: (if (not (eq (nth 1 fd) (1+ (count-lines (point-min) (point)))))
1692: (error "forth-get-doc-string: serious error"))
1693: (if (not (re-search-backward "\n[\t ]*\n" nil t))
1694: (goto-char (point-min))
1695: (goto-char (match-end 0)))
1696: (let ((p (point)))
1697: (if (not (re-search-forward "\n[\t ]*\n" nil t))
1698: (goto-char (point-max)))
1699: (setq result (buffer-substring p (point))))
1700: (bury-buffer (current-buffer)))
1701: result))
1702:
1703: (defun forth-get-file-data (limit)
1704: "Parse grep output and return '(filename line#) list. Return nil when
1705: passing limit."
1706: (forth-skip-error-lines)
1707: (if (< (point) limit)
1708: (let ((result (forth-get-file-data-cont limit)))
1709: (forward-line 1)
1710: (beginning-of-line)
1711: result)))
1712:
1713: (defun forth-get-file-data-cont (limit)
1714: (let (result)
1715: (let ((p (point)))
1716: (skip-chars-forward "^:")
1717: (setq result (buffer-substring p (point))))
1718: (if (< (point) limit)
1719: (let ((p (1+ (point))))
1720: (forward-char 1)
1721: (skip-chars-forward "^:")
1722: (list result (string-to-int (buffer-substring p (point))))))))
1723:
1724: (defun grep-regexp-quote (str)
1725: (let ((i 0) (m 1) (res ""))
1726: (while (/= m 0)
1727: (setq m (string-to-char (substring str i)))
1728: (if (/= m 0)
1729: (progn
1730: (setq i (1+ i))
1731: (if (string-match (regexp-quote (char-to-string m))
1732: ".*\\^$[]")
1733: (setq res (concat res "\\")))
1734: (setq res (concat res (char-to-string m))))))
1735: res))
1736:
1737:
1738: (define-key forth-mode-map "\C-x\C-e" 'compile)
1739: (define-key forth-mode-map "\C-x\C-n" 'next-error)
1740: (require 'compile "compile")
1741:
1742: (defvar forth-compile-command "gforth ")
1743: ;(defvar forth-compilation-window-percent-height 30)
1744:
1745: (defun forth-compile (command)
1746: (interactive (list (setq forth-compile-command (read-string "Compile command: " forth-compile-command))))
1747: (forth-split-1 "*compilation*")
1748: (setq ctools-compile-command command)
1749: (compile1 ctools-compile-command "No more errors"))
1750:
1751:
1752: ;;; Forth menu
1753: ;;; Mikael Karlsson <qramika@eras70.ericsson.se>
1754:
1755: (cond ((string-match "XEmacs\\|Lucid" emacs-version)
1756: (require 'func-menu)
1757:
1758: (defconst fume-function-name-regexp-forth
1759: "^\\(:\\)[ \t]+\\([^ \t]*\\)"
1760: "Expression to get word definitions in Forth.")
1761:
1762: (setq fume-function-name-regexp-alist
1763: (append '((forth-mode . fume-function-name-regexp-forth)
1764: ) fume-function-name-regexp-alist))
1765:
1766: ;; Find next forth word in the buffer
1767: (defun fume-find-next-forth-function-name (buffer)
1768: "Searches for the next forth word in BUFFER."
1769: (set-buffer buffer)
1770: (if (re-search-forward fume-function-name-regexp nil t)
1771: (let ((beg (match-beginning 2))
1772: (end (match-end 2)))
1773: (cons (buffer-substring beg end) beg))))
1774:
1775: (setq fume-find-function-name-method-alist
1776: (append '((forth-mode . fume-find-next-forth-function-name))))
1777:
1778: ))
1779: ;;; End Forth menu
1780:
1781: ;;; File folding of forth-files
1782: ;;; uses outline
1783: ;;; Toggle activation with M-x fold-f (when editing a forth-file)
1784: ;;; Use f9 to expand, f10 to hide, Or the menubar in xemacs
1785: ;;;
1786: ;;; Works most of the times but loses sync with the cursor occasionally
1787: ;;; Could be improved by also folding on comments
1788:
1789: (require 'outline)
1790:
1791: (defun f-outline-level ()
1792: (cond ((looking-at "\\`\\\\")
1793: 0)
1794: ((looking-at "\\\\ SEC")
1795: 0)
1796: ((looking-at "\\\\ \\\\ .*")
1797: 0)
1798: ((looking-at "\\\\ DEFS")
1799: 1)
1800: ((looking-at "\\/\\* ")
1801: 1)
1802: ((looking-at ": .*")
1803: 1)
1804: ((looking-at "\\\\G")
1805: 2)
1806: ((looking-at "[ \t]+\\\\")
1807: 3))
1808: )
1809:
1810: (defun fold-f ()
1811: (interactive)
1812: (add-hook 'outline-minor-mode-hook 'hide-body)
1813:
1814: ; outline mode header start, i.e. find word definitions
1815: ;;; (setq outline-regexp "^\\(:\\)[ \t]+\\([^ \t]*\\)")
1816: (setq outline-regexp "\\`\\\\\\|:\\|\\\\ SEC\\|\\\\G\\|[ \t]+\\\\\\|\\\\ DEFS\\|\\/\\*\\|\\\\ \\\\ .*")
1817: (setq outline-level 'f-outline-level)
1818:
1819: (outline-minor-mode)
1820: (define-key outline-minor-mode-map '(shift up) 'hide-sublevels)
1821: (define-key outline-minor-mode-map '(shift right) 'show-children)
1822: (define-key outline-minor-mode-map '(shift left) 'hide-subtree)
1823: (define-key outline-minor-mode-map '(shift down) 'show-subtree)
1824:
1825: )
1826:
1827: ;;(define-key global-map '(shift up) 'fold-f)
1828:
1829: ;;; end file folding
1830:
1831: ;;; func-menu is a package that scans your source file for function definitions
1832: ;;; and makes a menubar entry that lets you jump to any particular function
1833: ;;; definition by selecting it from the menu. The following code turns this on
1834: ;;; for all of the recognized languages. Scanning the buffer takes some time,
1835: ;;; but not much.
1836: ;;;
1837: (cond ((string-match "XEmacs\\|Lucid" emacs-version)
1838: (require 'func-menu)
1839: ;; (define-key global-map 'f8 'function-menu)
1840: (add-hook 'find-fible-hooks 'fume-add-menubar-entry)
1841: ; (define-key global-map "\C-cg" 'fume-prompt-function-goto)
1842: ; (define-key global-map '(shift button3) 'mouse-function-menu)
1843: ))
1844:
1845: ;;; gforth.el ends here
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