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Thu Jan 17 19:26:34 2002 UTC (22 years, 3 months ago) by
dvdkhlng
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added and fixed `require's, fixed byte-code-compilation relevant
things (avoid free variables, top-level `require's etc), added
`(provide 'forth-mode)'
1: ;;; gforth.el --- major mode for editing (G)Forth sources
2:
3: ;; Copyright (C) 1995,1996,1997,1998,2000,2001 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: ;; Code ripped from `version.el' for compatability with Emacs versions
53: ;; prior to 19.23.
54: (unless (boundp 'emacs-major-version)
55: (defconst emacs-major-version
56: (progn (string-match "^[0-9]+" emacs-version)
57: (string-to-int (match-string 0 emacs-version)))))
58:
59:
60: ; todo:
61: ;
62:
63: ; Wörter ordentlich hilighten, die nicht auf Whitespace beginnen ( ..)IF
64: ; -- mit aktueller Konzeption nicht möglich??
65: ;
66: ; Konfiguration über customization groups
67: ;
68: ; Bereich nur auf Wortanfang/ende ausweiten, wenn Anfang bzw Ende in einem
69: ; Wort liegen (?) -- speed!
70: ;
71: ; 'forth-word' property muss eindeutig sein!
72: ;
73: ; Forth-Menu
74: ;
75: ; Interface zu GForth Prozessen (Patches von Michael Scholz)
76: ;
77: ; Byte-compile-Code rausschmeißen, Compilieren im Makefile über Emacs
78: ; batch-Modus
79: ;
80: ; forth-help Kram rausschmeißen
81: ;
82: ; XEmacs Kompatibilität? imenu/speedbar -> fume?
83: ;
84: ; Folding neuschreiben (neue Parser-Informationen benutzen)
85:
86: ;;; Hilighting and indentation engine (dk)
87: ;;;
88: (require 'font-lock)
89:
90: (defvar forth-disable-parser nil
91: "*Non-nil means to disable on-the-fly parsing of Forth-code.
92:
93: This will disable hilighting of forth-mode buffers and will decrease
94: the smartness of the indentation engine. Only set it to non-nil, if
95: your computer is very slow. To disable hilighting, set
96: `forth-hilight-level' to zero.")
97:
98: (defvar forth-jit-parser nil
99: "*Non-nil means to parse Forth-code just-in-time.
100:
101: This eliminates the need for initially parsing forth-mode buffers and
102: thus speeds up loading of Forth files. That feature is only available
103: in Emacs21 (and newer versions).")
104:
105: (defvar forth-words nil
106: "List of words for hilighting and recognition of parsed text areas.
107:
108: Hilighting of object-oriented Forth code is achieved, by appending either
109: `forth-objects-words' or `forth-oof-words' to the list, depending on the values of `forth-use-objects' or `forth-use-oof'.
110:
111: After `forth-words' changed, `forth-compile-words' must be called to
112: make the changes take effect.
113:
114: Each item of `forth-words' has the form
115: (MATCHER TYPE HILIGHT . &optional PARSED-TEXT ...)
116:
117: MATCHER is either a list of strings to match, or a REGEXP.
118: If it's a REGEXP, it should not be surrounded by '\\<' or '\\>', since
119: that'll be done automatically by the search routines.
120:
121: TYPE should be one of 'definiton-starter', 'definition-ender', 'compile-only',
122: 'immediate' or 'non-immediate'. Those information are required to determine
123: whether a word actually parses (and whether that parsed text needs to be
124: hilighted).
125:
126: HILIGHT is a cons cell of the form (FACE . MINIMUM-LEVEL)
127: Where MINIMUM-LEVEL specifies the minimum value of `forth-hilight-level',
128: that's required for matching text to be hilighted.
129:
130: PARSED-TEXT specifies whether and how a word parses following text. You can
131: specify as many subsequent PARSED-TEXT as you wish, but that shouldn't be
132: necessary very often. It has the following form:
133: (DELIM-REGEXP SKIP-LEADING-FLAG PARSED-TYPE HILIGHT)
134:
135: DELIM-REGEXP is a regular expression that should match strings of length 1,
136: which are delimiters for the parsed text.
137:
138: A non-nil value for PARSE-LEADING-FLAG means, that leading delimiter strings
139: before parsed text should be skipped. This is the parsing behaviour of the
140: Forth word WORD. Set it to t for name-parsing words, nil for comments and
141: strings.
142:
143: PARSED-TYPE specifies what kind of text is parsed. It should be on of 'name',
144: 'string' or 'comment'.")
145: (setq forth-words
146: '(
147: (("[") definition-ender (font-lock-keyword-face . 1))
148: (("]" "]l") definition-starter (font-lock-keyword-face . 1))
149: ((":") definition-starter (font-lock-keyword-face . 1)
150: "[ \t\n]" t name (font-lock-function-name-face . 3))
151: (("immediate" "compile-only" "restrict")
152: immediate (font-lock-keyword-face . 1))
153: (("does>") compile-only (font-lock-keyword-face . 1))
154: ((":noname") definition-starter (font-lock-keyword-face . 1))
155: ((";" ";code") definition-ender (font-lock-keyword-face . 1))
156: (("include" "require" "needs" "use")
157: non-immediate (font-lock-keyword-face . 1)
158: "[\n\t ]" t string (font-lock-string-face . 1))
159: (("included" "required" "thru" "load")
160: non-immediate (font-lock-keyword-face . 1))
161: (("[char]") compile-only (font-lock-keyword-face . 1)
162: "[ \t\n]" t string (font-lock-string-face . 1))
163: (("char") non-immediate (font-lock-keyword-face . 1)
164: "[ \t\n]" t string (font-lock-string-face . 1))
165: (("s\"" "c\"") immediate (font-lock-string-face . 1)
166: "[\"\n]" nil string (font-lock-string-face . 1))
167: ((".\"") compile-only (font-lock-string-face . 1)
168: "[\"\n]" nil string (font-lock-string-face . 1))
169: (("abort\"") compile-only (font-lock-keyword-face . 1)
170: "[\"\n]" nil string (font-lock-string-face . 1))
171: (("{") compile-only (font-lock-variable-name-face . 1)
172: "[\n}]" nil name (font-lock-variable-name-face . 1))
173: ((".(" "(") immediate (font-lock-comment-face . 1)
174: ")" nil comment (font-lock-comment-face . 1))
175: (("\\" "\\G") immediate (font-lock-comment-face . 1)
176: "[\n]" nil comment (font-lock-comment-face . 1))
177:
178: (("[if]" "[?do]" "[do]" "[for]" "[begin]"
179: "[endif]" "[then]" "[loop]" "[+loop]" "[next]" "[until]" "[repeat]"
180: "[again]" "[while]" "[else]")
181: immediate (font-lock-keyword-face . 2))
182: (("[ifdef]" "[ifundef]") immediate (font-lock-keyword-face . 2)
183: "[ \t\n]" t name (font-lock-function-name-face . 3))
184: (("if" "begin" "ahead" "do" "?do" "+do" "u+do" "-do" "u-do" "for"
185: "case" "of" "?dup-if" "?dup-0=-if" "then" "until" "repeat" "again"
186: "loop" "+loop" "-loop" "next" "endcase" "endof" "else" "while" "try"
187: "recover" "endtry" "assert(" "assert0(" "assert1(" "assert2("
188: "assert3(" ")" "<interpretation" "<compilation" "interpretation>"
189: "compilation>")
190: compile-only (font-lock-keyword-face . 2))
191:
192: (("true" "false" "c/l" "bl" "cell" "pi" "w/o" "r/o" "r/w")
193: non-immediate (font-lock-constant-face . 2))
194: (("~~" "break:" "dbg") compile-only (font-lock-warning-face . 2))
195: (("break\"") compile-only (font-lock-warning-face . 1)
196: "[\"\n]" nil string (font-lock-string-face . 1))
197: (("postpone" "[is]" "defers" "[']" "[compile]")
198: compile-only (font-lock-keyword-face . 2)
199: "[ \t\n]" t name (font-lock-function-name-face . 3))
200: (("is" "what's") immediate (font-lock-keyword-face . 2)
201: "[ \t\n]" t name (font-lock-function-name-face . 3))
202: (("<is>" "'" "see") non-immediate (font-lock-keyword-face . 2)
203: "[ \t\n]" t name (font-lock-function-name-face . 3))
204: (("[to]") compile-only (font-lock-keyword-face . 2)
205: "[ \t\n]" t name (font-lock-variable-name-face . 3))
206: (("to") immediate (font-lock-keyword-face . 2)
207: "[ \t\n]" t name (font-lock-variable-name-face . 3))
208: (("<to>") non-immediate (font-lock-keyword-face . 2)
209: "[ \t\n]" t name (font-lock-variable-name-face . 3))
210:
211: (("create" "variable" "constant" "2variable" "2constant" "fvariable"
212: "fconstant" "value" "field" "user" "vocabulary"
213: "create-interpret/compile")
214: non-immediate (font-lock-type-face . 2)
215: "[ \t\n]" t name (font-lock-variable-name-face . 3))
216: ("\\S-+%" non-immediate (font-lock-type-face . 2))
217: (("defer" "alias" "create-interpret/compile:")
218: non-immediate (font-lock-type-face . 1)
219: "[ \t\n]" t name (font-lock-function-name-face . 3))
220: (("end-struct") non-immediate (font-lock-keyword-face . 2)
221: "[ \t\n]" t name (font-lock-type-face . 3))
222: (("struct") non-immediate (font-lock-keyword-face . 2))
223: ("-?[0-9]+\\(\\.[0-9]*e\\(-?[0-9]+\\)?\\|\\.?[0-9a-f]*\\)"
224: immediate (font-lock-constant-face . 3))
225: ))
226:
227: (defvar forth-use-objects nil
228: "*Non-nil makes forth-mode also hilight words from the \"Objects\" package.")
229: (defvar forth-objects-words
230: '(((":m") definition-starter (font-lock-keyword-face . 1)
231: "[ \t\n]" t name (font-lock-function-name-face . 3))
232: (("m:") definition-starter (font-lock-keyword-face . 1))
233: ((";m") definition-ender (font-lock-keyword-face . 1))
234: (("[current]" "[parent]") compile-only (font-lock-keyword-face . 1)
235: "[ \t\n]" t name (font-lock-function-name-face . 3))
236: (("current" "overrides") non-immediate (font-lock-keyword-face . 2)
237: "[ \t\n]" t name (font-lock-function-name-face . 3))
238: (("[to-inst]") compile-only (font-lock-keyword-face . 2)
239: "[ \t\n]" t name (font-lock-variable-name-face . 3))
240: (("[bind]") compile-only (font-lock-keyword-face . 2)
241: "[ \t\n]" t name (font-lock-type-face . 3)
242: "[ \t\n]" t name (font-lock-function-name-face . 3))
243: (("bind") non-immediate (font-lock-keyword-face . 2)
244: "[ \t\n]" t name (font-lock-type-face . 3)
245: "[ \t\n]" t name (font-lock-function-name-face . 3))
246: (("inst-var" "inst-value") non-immediate (font-lock-type-face . 2)
247: "[ \t\n]" t name (font-lock-variable-name-face . 3))
248: (("method" "selector")
249: non-immediate (font-lock-type-face . 1)
250: "[ \t\n]" t name (font-lock-function-name-face . 3))
251: (("end-class" "end-interface")
252: non-immediate (font-lock-keyword-face . 2)
253: "[ \t\n]" t name (font-lock-type-face . 3))
254: (("public" "protected" "class" "exitm" "implementation" "interface"
255: "methods" "end-methods" "this")
256: non-immediate (font-lock-keyword-face . 2))
257: (("object") non-immediate (font-lock-type-face . 2)))
258: "Hilighting description for words of the \"Objects\" package")
259:
260:
261: (defvar forth-use-oof nil
262: "*Non-nil makes forth-mode also hilight words from the \"OOF\" package.")
263: (defvar forth-oof-words
264: '((("class") non-immediate (font-lock-keyword-face . 2)
265: "[ \t\n]" t name (font-lock-type-face . 3))
266: (("var") non-immediate (font-lock-type-face . 2)
267: "[ \t\n]" t name (font-lock-variable-name-face . 3))
268: (("method" "early") non-immediate (font-lock-type-face . 2)
269: "[ \t\n]" t name (font-lock-function-name-face . 3))
270: (("::" "super" "bind" "bound" "link")
271: immediate (font-lock-keyword-face . 2)
272: "[ \t\n]" t name (font-lock-function-name-face . 3))
273: (("ptr" "asptr" "[]")
274: immediate (font-lock-keyword-face . 2)
275: "[ \t\n]" t name (font-lock-variable-name-face . 3))
276: (("class;" "how:" "self" "new" "new[]" "definitions" "class?" "with"
277: "endwith")
278: non-immediate (font-lock-keyword-face . 2))
279: (("object") non-immediate (font-lock-type-face . 2)))
280: "Hilighting description for words of the \"OOF\" package")
281:
282: (defvar forth-local-words nil
283: "List of Forth words to prepend to `forth-words'. Should be set by a
284: forth source, using a local variables list at the end of the file
285: (\"Local Variables: ... forth-local-words: ... End:\" construct).")
286:
287: (defvar forth-custom-words nil
288: "List of Forth words to prepend to `forth-words'. Should be set in your
289: .emacs.")
290:
291: (defvar forth-hilight-level 3 "*Level of hilighting of Forth code.")
292:
293: (defvar forth-compiled-words nil "Compiled representation of `forth-words'.")
294:
295: (defvar forth-indent-words nil
296: "List of words that have indentation behaviour.
297: Each element of `forth-indent-words' should have the form
298: (MATCHER INDENT1 INDENT2 &optional TYPE)
299:
300: MATCHER is either a list of strings to match, or a REGEXP.
301: If it's a REGEXP, it should not be surrounded by `\\<` or `\\>`, since
302: that'll be done automatically by the search routines.
303:
304: TYPE might be omitted. If it's specified, the only allowed value is
305: currently the symbol `non-immediate', meaning that the word will not
306: have any effect on indentation inside definitions. (:NONAME is a good
307: example for this kind of word).
308:
309: INDENT1 specifies how to indent a word that's located at a line's begin,
310: following any number of whitespaces.
311:
312: INDENT2 specifies how to indent words that are not located at a line's begin.
313:
314: INDENT1 and INDENT2 are indentation specifications of the form
315: (SELF-INDENT . NEXT-INDENT), where SELF-INDENT is a numerical value,
316: specifying how the matching line and all following lines are to be
317: indented, relative to previous lines. NEXT-INDENT specifies how to indent
318: following lines, relative to the matching line.
319:
320: Even values of SELF-INDENT and NEXT-INDENT correspond to multiples of
321: `forth-indent-level'. Odd values get an additional
322: `forth-minor-indent-level' added/substracted. Eg a value of -2 indents
323: 1 * forth-indent-level to the left, wheras 3 indents
324: 1 * forth-indent-level + forth-minor-indent-level columns to the right.")
325:
326: (setq forth-indent-words
327: '((("if" "begin" "do" "?do" "+do" "-do" "u+do"
328: "u-do" "?dup-if" "?dup-0=-if" "case" "of" "try"
329: "[if]" "[ifdef]" "[ifundef]" "[begin]" "[for]" "[do]" "[?do]")
330: (0 . 2) (0 . 2))
331: ((":" ":noname" "code" "struct" "m:" ":m" "class" "interface")
332: (0 . 2) (0 . 2) non-immediate)
333: ("\\S-+%$" (0 . 2) (0 . 0) non-immediate)
334: ((";" ";m") (-2 . 0) (0 . -2))
335: (("again" "repeat" "then" "endtry" "endcase" "endof"
336: "[then]" "[endif]" "[loop]" "[+loop]" "[next]"
337: "[until]" "[repeat]" "[again]" "loop")
338: (-2 . 0) (0 . -2))
339: (("end-code" "end-class" "end-interface" "end-class-noname"
340: "end-interface-noname" "end-struct" "class;")
341: (-2 . 0) (0 . -2) non-immediate)
342: (("protected" "public" "how:") (-1 . 1) (0 . 0) non-immediate)
343: (("+loop" "-loop" "until") (-2 . 0) (-2 . 0))
344: (("else" "recover" "[else]") (-2 . 2) (0 . 0))
345: (("while" "does>" "[while]") (-1 . 1) (0 . 0))
346: (("\\g") (-2 . 2) (0 . 0))))
347:
348: (defvar forth-local-indent-words nil
349: "List of Forth words to prepend to `forth-indent-words', when a forth-mode
350: buffer is created. Should be set by a Forth source, using a local variables
351: list at the end of the file (\"Local Variables: ... forth-local-words: ...
352: End:\" construct).")
353:
354: (defvar forth-custom-indent-words nil
355: "List of Forth words to prepend to `forth-indent-words'. Should be set in
356: your .emacs.")
357:
358: (defvar forth-indent-level 4
359: "*Indentation of Forth statements.")
360: (defvar forth-minor-indent-level 2
361: "*Minor indentation of Forth statements.")
362: (defvar forth-compiled-indent-words nil)
363:
364: ;(setq debug-on-error t)
365:
366: ;; Filter list by predicate. This is a somewhat standard function for
367: ;; functional programming languages. So why isn't it already implemented
368: ;; in Lisp??
369: (defun forth-filter (predicate list)
370: (let ((filtered nil))
371: (mapcar (lambda (item)
372: (when (funcall predicate item)
373: (if filtered
374: (nconc filtered (list item))
375: (setq filtered (cons item nil))))
376: nil) list)
377: filtered))
378:
379: ;; Helper function for `forth-compile-word': return whether word has to be
380: ;; added to the compiled word list, for syntactic parsing and hilighting.
381: (defun forth-words-filter (word)
382: (let* ((hilight (nth 2 word))
383: (level (cdr hilight))
384: (parsing-flag (nth 3 word)))
385: (or parsing-flag
386: (<= level forth-hilight-level))))
387:
388: ;; Helper function for `forth-compile-word': translate one entry from
389: ;; `forth-words' into the form (regexp regexp-depth word-description)
390: (defun forth-compile-words-mapper (word)
391: (let* ((matcher (car word))
392: (regexp (if (stringp matcher) (concat "\\(" matcher "\\)")
393: (if (listp matcher) (regexp-opt matcher t)
394: (error "Invalid matcher (stringp or listp expected `%s'"
395: matcher))))
396: (depth (regexp-opt-depth regexp))
397: (description (cdr word)))
398: (list regexp depth description)))
399:
400: ;; Read `words' and create a compiled representation suitable for efficient
401: ;; parsing of the form
402: ;; (regexp (subexp-count word-description) (subexp-count2 word-description2)
403: ;; ...)
404: (defun forth-compile-wordlist (words)
405: (let* ((mapped (mapcar 'forth-compile-words-mapper words))
406: (regexp (concat "\\<\\("
407: (mapconcat 'car mapped "\\|")
408: "\\)\\>"))
409: (sub-count 2)
410: (sub-list (mapcar
411: (lambda (i)
412: (let ((sub (cons sub-count (nth 2 i))))
413: (setq sub-count (+ sub-count (nth 1 i)))
414: sub
415: ))
416: mapped)))
417: (let ((result (cons regexp sub-list)))
418: (byte-compile 'result)
419: result)))
420:
421: (defun forth-compile-words ()
422: "Compile the the words from `forth-words' and `forth-indent-words' into
423: the format that's later used for doing the actual hilighting/indentation.
424: Store the resulting compiled wordlists in `forth-compiled-words' and
425: `forth-compiled-indent-words', respective"
426: (setq forth-compiled-words
427: (forth-compile-wordlist
428: (forth-filter 'forth-words-filter forth-words)))
429: (setq forth-compiled-indent-words
430: (forth-compile-wordlist forth-indent-words)))
431:
432: (defun forth-hack-local-variables ()
433: "Parse and bind local variables, set in the contents of the current
434: forth-mode buffer. Prepend `forth-local-words' to `forth-words' and
435: `forth-local-indent-words' to `forth-indent-words'."
436: (hack-local-variables)
437: (setq forth-words (append forth-local-words forth-words))
438: (setq forth-indent-words (append forth-local-indent-words
439: forth-indent-words)))
440:
441: (defun forth-customize-words ()
442: "Add the words from `forth-custom-words' and `forth-custom-indent-words'
443: to `forth-words' and `forth-indent-words', respective. Add
444: `forth-objects-words' and/or `forth-oof-words' to `forth-words', if
445: `forth-use-objects' and/or `forth-use-oof', respective is set."
446: (setq forth-words (append forth-custom-words forth-words
447: (if forth-use-oof forth-oof-words nil)
448: (if forth-use-objects forth-objects-words nil)))
449: (setq forth-indent-words (append
450: forth-custom-indent-words forth-indent-words)))
451:
452:
453:
454: ;; get location of first character of previous forth word that's got
455: ;; properties
456: (defun forth-previous-start (pos)
457: (let* ((word (get-text-property pos 'forth-word))
458: (prev (previous-single-property-change
459: (min (point-max) (1+ pos)) 'forth-word
460: (current-buffer) (point-min))))
461: (if (or (= (point-min) prev) word) prev
462: (if (get-text-property (1- prev) 'forth-word)
463: (previous-single-property-change
464: prev 'forth-word (current-buffer) (point-min))
465: (point-min)))))
466:
467: ;; Get location of the last character of the current/next forth word that's
468: ;; got properties, text that's parsed by the word is considered as parts of
469: ;; the word.
470: (defun forth-next-end (pos)
471: (let* ((word (get-text-property pos 'forth-word))
472: (next (next-single-property-change pos 'forth-word
473: (current-buffer) (point-max))))
474: (if word next
475: (if (get-text-property next 'forth-word)
476: (next-single-property-change
477: next 'forth-word (current-buffer) (point-max))
478: (point-max)))))
479:
480: (defun forth-next-whitespace (pos)
481: (save-excursion
482: (goto-char pos)
483: (skip-syntax-forward "-" (point-max))
484: (point)))
485: (defun forth-previous-word (pos)
486: (save-excursion
487: (goto-char pos)
488: (re-search-backward "\\<" pos (point-min) 1)
489: (point)))
490:
491: ;; Delete all properties, used by Forth mode, from `from' to `to'.
492: (defun forth-delete-properties (from to)
493: (remove-text-properties
494: from to '(face nil fontified nil
495: forth-parsed nil forth-word nil forth-state nil)))
496:
497: ;; Get the index of the branch of the most recently evaluated regular
498: ;; expression that matched. (used for identifying branches "a\\|b\\|c...")
499: (defun forth-get-regexp-branch ()
500: (let ((count 2))
501: (while (not (match-beginning count))
502: (setq count (1+ count)))
503: count))
504:
505: ;; seek to next forth-word and return its "word-description"
506: (defun forth-next-known-forth-word (to)
507: (if (<= (point) to)
508: (progn
509: (let* ((regexp (car forth-compiled-words))
510: (pos (re-search-forward regexp to t)))
511: (if pos (let ((branch (forth-get-regexp-branch))
512: (descr (cdr forth-compiled-words)))
513: (goto-char (match-beginning 0))
514: (cdr (assoc branch descr)))
515: 'nil)))
516: nil))
517:
518: ;; Set properties of forth word at `point', eventually parsing subsequent
519: ;; words, and parsing all whitespaces. Set point to delimiter after word.
520: ;; The word, including it's parsed text gets the `forth-word' property, whose
521: ;; value is unique, and may be used for getting the word's start/end
522: ;; positions.
523: (defun forth-set-word-properties (state data)
524: (let* ((start (point))
525: (end (progn (re-search-forward "[ \t]\\|$" (point-max) 1)
526: (point)))
527: (type (car data))
528: (hilight (nth 1 data))
529: (bad-word (and (not state) (eq type 'compile-only)))
530: (hlface (if bad-word font-lock-warning-face
531: (if (<= (cdr hilight) forth-hilight-level)
532: (car hilight) nil))))
533: (when hlface (put-text-property start end 'face hlface))
534: ;; if word parses in current state, process parsed range of text
535: (when (or (not state) (eq type 'compile-only) (eq type 'immediate))
536: (let ((parse-data (nthcdr 2 data)))
537: (while parse-data
538: (let ((delim (nth 0 parse-data))
539: (skip-leading (nth 1 parse-data))
540: (parse-type (nth 2 parse-data))
541: (parsed-hilight (nth 3 parse-data))
542: (parse-start (point))
543: (parse-end))
544: (when skip-leading
545: (while (and (looking-at delim) (> (match-end 0) (point))
546: (not (looking-at "\n")))
547: (forward-char)))
548: (re-search-forward delim (point-max) 1)
549: (setq parse-end (point))
550: (forth-delete-properties end parse-end)
551: (when (<= (cdr parsed-hilight) forth-hilight-level)
552: (put-text-property
553: parse-start parse-end 'face (car parsed-hilight)))
554: (put-text-property
555: parse-start parse-end 'forth-parsed parse-type)
556: (setq end parse-end)
557: (setq parse-data (nthcdr 4 parse-data))))))
558: (put-text-property start end 'forth-word start)))
559:
560: ;; Search for known Forth words in the range `from' to `to', using
561: ;; `forth-next-known-forth-word' and set their properties via
562: ;; `forth-set-word-properties'.
563: (defun forth-update-properties (from to &optional loudly)
564: (save-excursion
565: (let ((msg-count 0) (state) (word-descr) (last-location))
566: (goto-char (forth-previous-word (forth-previous-start
567: (max (point-min) (1- from)))))
568: (setq to (forth-next-end (min (point-max) (1+ to))))
569: ;; `to' must be on a space delimiter, if a parsing word was changed
570: (setq to (forth-next-whitespace to))
571: (setq state (get-text-property (point) 'forth-state))
572: (setq last-location (point))
573: (forth-delete-properties (point) to)
574: (put-text-property (point) to 'fontified t)
575: ;; hilight loop...
576: (while (setq word-descr (forth-next-known-forth-word to))
577: (when loudly
578: (when (equal 0 (% msg-count 100))
579: (message "Parsing Forth code...%s"
580: (make-string (/ msg-count 100) ?.)))
581: (setq msg-count (1+ msg-count)))
582: (forth-set-word-properties state word-descr)
583: (when state (put-text-property last-location (point) 'forth-state t))
584: (let ((type (car word-descr)))
585: (if (eq type 'definition-starter) (setq state t))
586: (if (eq type 'definition-ender) (setq state nil))
587: (setq last-location (point))))
588: ;; update state property up to `to'
589: (if (and state (< (point) to))
590: (put-text-property last-location to 'forth-state t))
591: ;; extend search if following state properties differ from current state
592: (if (< to (point-max))
593: (if (not (equal state (get-text-property (1+ to) 'forth-state)))
594: (let ((extend-to (next-single-property-change
595: to 'forth-state (current-buffer) (point-max))))
596: (forth-update-properties to extend-to))
597: ))
598: )))
599:
600: ;; save-buffer-state borrowed from `font-lock.el'
601: (eval-when-compile
602: (defmacro forth-save-buffer-state (varlist &rest body)
603: "Bind variables according to VARLIST and eval BODY restoring buffer state."
604: (` (let* ((,@ (append varlist
605: '((modified (buffer-modified-p)) (buffer-undo-list t)
606: (inhibit-read-only t) (inhibit-point-motion-hooks t)
607: before-change-functions after-change-functions
608: deactivate-mark buffer-file-name buffer-file-truename))))
609: (,@ body)
610: (when (and (not modified) (buffer-modified-p))
611: (set-buffer-modified-p nil))))))
612:
613: ;; Function that is added to the `change-functions' hook. Calls
614: ;; `forth-update-properties' and keeps care of disabling undo information
615: ;; and stuff like that.
616: (defun forth-change-function (from to len &optional loudly)
617: (save-match-data
618: (forth-save-buffer-state
619: ()
620: (unless forth-disable-parser (forth-update-properties from to loudly))
621: (forth-update-warn-long-lines))))
622:
623: (defun forth-fontification-function (from)
624: "Function to be called from `fontification-functions' of Emacs 21."
625: (save-match-data
626: (forth-save-buffer-state
627: ((to (min (point-max) (+ from 100))))
628: (unless (or forth-disable-parser (not forth-jit-parser)
629: (get-text-property from 'fontified))
630: (forth-update-properties from to)))))
631:
632: (eval-when-compile
633: (byte-compile 'forth-set-word-properties)
634: (byte-compile 'forth-next-known-forth-word)
635: (byte-compile 'forth-update-properties)
636: (byte-compile 'forth-delete-properties)
637: (byte-compile 'forth-get-regexp-branch))
638:
639: ;;; imenu support
640: ;;;
641: (defvar forth-defining-words
642: '("VARIABLE" "CONSTANT" "2VARIABLE" "2CONSTANT" "FVARIABLE" "FCONSTANT"
643: "USER" "VALUE" "field" "end-struct" "VOCABULARY" "CREATE" ":" "CODE"
644: "DEFER" "ALIAS")
645: "List of words, that define the following word.
646: Used for imenu index generation.")
647:
648: (defvar forth-defining-words-regexp nil
649: "Regexp that's generated for matching `forth-defining-words'")
650:
651: (defun forth-next-definition-starter ()
652: (progn
653: (let* ((pos (re-search-forward forth-defining-words-regexp (point-max) t)))
654: (if pos
655: (if (or (text-property-not-all (match-beginning 0) (match-end 0)
656: 'forth-parsed nil)
657: (text-property-not-all (match-beginning 0) (match-end 0)
658: 'forth-state nil))
659: (forth-next-definition-starter)
660: t)
661: nil))))
662:
663: (defun forth-create-index ()
664: (let* ((forth-defining-words-regexp
665: (concat "\\<\\(" (regexp-opt forth-defining-words) "\\)\\>"))
666: (index nil))
667: (goto-char (point-min))
668: (while (forth-next-definition-starter)
669: (if (looking-at "[ \t]*\\([^ \t\n]+\\)")
670: (setq index (cons (cons (match-string 1) (point)) index))))
671: index))
672:
673: ;; top-level require is executed at byte-compile and load time
674: (require 'speedbar nil t)
675:
676: ;; this code is executed at load-time only
677: (when (require 'speedbar nil t)
678: (speedbar-add-supported-extension ".fs")
679: (speedbar-add-supported-extension ".fb"))
680:
681: ;; (require 'profile)
682: ;; (setq profile-functions-list '(forth-set-word-properties forth-next-known-forth-word forth-update-properties forth-delete-properties forth-get-regexp-branch))
683:
684: ;;; Indentation
685: ;;;
686:
687: ;; Return, whether `pos' is the first forth word on its line
688: (defun forth-first-word-on-line-p (pos)
689: (save-excursion
690: (beginning-of-line)
691: (skip-chars-forward " \t")
692: (= pos (point))))
693:
694: ;; Return indentation data (SELF-INDENT . NEXT-INDENT) of next known
695: ;; indentation word, or nil if there is no word up to `to'.
696: ;; Position `point' at location just after found word, or at `to'. Parsed
697: ;; ranges of text will not be taken into consideration!
698: (defun forth-next-known-indent-word (to)
699: (if (<= (point) to)
700: (progn
701: (let* ((regexp (car forth-compiled-indent-words))
702: (pos (re-search-forward regexp to t)))
703: (if pos
704: (let* ((start (match-beginning 0))
705: (end (match-end 0))
706: (branch (forth-get-regexp-branch))
707: (descr (cdr forth-compiled-indent-words))
708: (indent (cdr (assoc branch descr)))
709: (type (nth 2 indent)))
710: ;; skip words that are parsed (strings/comments) and
711: ;; non-immediate words inside definitions
712: (if (or (text-property-not-all start end 'forth-parsed nil)
713: (and (eq type 'non-immediate)
714: (text-property-not-all start end
715: 'forth-state nil)))
716: (forth-next-known-indent-word to)
717: (if (forth-first-word-on-line-p (match-beginning 0))
718: (nth 0 indent) (nth 1 indent))))
719: nil)))
720: nil))
721:
722: ;; Translate indentation value `indent' to indentation column. Multiples of
723: ;; 2 correspond to multiples of `forth-indent-level'. Odd numbers get an
724: ;; additional `forth-minor-indent-level' added (or substracted).
725: (defun forth-convert-to-column (indent)
726: (let* ((sign (if (< indent 0) -1 1))
727: (value (abs indent))
728: (major (* (/ value 2) forth-indent-level))
729: (minor (* (% value 2) forth-minor-indent-level)))
730: (* sign (+ major minor))))
731:
732: ;; Return the column increment, that the current line of forth code does to
733: ;; the current or following lines. `which' specifies which indentation values
734: ;; to use. 0 means the indentation of following lines relative to current
735: ;; line, 1 means the indentation of the current line relative to the previous
736: ;; line. Return `nil', if there are no indentation words on the current line.
737: (defun forth-get-column-incr (which)
738: (save-excursion
739: (let ((regexp (car forth-compiled-indent-words))
740: (word-indent)
741: (self-indent nil)
742: (next-indent nil)
743: (to (save-excursion (end-of-line) (point))))
744: (beginning-of-line)
745: (while (setq word-indent (forth-next-known-indent-word to))
746: (let* ((self-incr (car word-indent))
747: (next-incr (cdr word-indent))
748: (self-column-incr (forth-convert-to-column self-incr))
749: (next-column-incr (forth-convert-to-column next-incr)))
750: (setq next-indent (if next-indent next-indent 0))
751: (setq self-indent (if self-indent self-indent 0))
752: (if (or (and (> next-indent 0) (< self-column-incr 0))
753: (and (< next-indent 0) (> self-column-incr 0)))
754: (setq next-indent (+ next-indent self-column-incr))
755: (setq self-indent (+ self-indent self-column-incr)))
756: (setq next-indent (+ next-indent next-column-incr))))
757: (nth which (list self-indent next-indent)))))
758:
759: ;; Find previous line that contains indentation words, return the column,
760: ;; to which following text should be indented to.
761: (defun forth-get-anchor-column ()
762: (save-excursion
763: (if (/= 0 (forward-line -1)) 0
764: (let ((indent))
765: (while (not (or (setq indent (forth-get-column-incr 1))
766: (<= (point) (point-min))))
767: (forward-line -1))
768: (+ (current-indentation) (if indent indent 0))))))
769:
770: (defun forth-indent-line (&optional flag)
771: "Correct indentation of the current Forth line."
772: (let* ((anchor (forth-get-anchor-column))
773: (column-incr (forth-get-column-incr 0)))
774: (forth-indent-to (if column-incr (+ anchor column-incr) anchor))))
775:
776: (defun forth-current-column ()
777: (- (point) (save-excursion (beginning-of-line) (point))))
778: (defun forth-current-indentation ()
779: (- (save-excursion (beginning-of-line) (forward-to-indentation 0) (point))
780: (save-excursion (beginning-of-line) (point))))
781:
782: (defun forth-indent-to (x)
783: (let ((p nil))
784: (setq p (- (forth-current-column) (forth-current-indentation)))
785: (forth-delete-indentation)
786: (beginning-of-line)
787: (indent-to x)
788: (if (> p 0) (forward-char p))))
789:
790: (defun forth-delete-indentation ()
791: (save-excursion
792: (delete-region
793: (progn (beginning-of-line) (point))
794: (progn (back-to-indentation) (point)))))
795:
796: (defun forth-indent-command ()
797: (interactive)
798: (forth-indent-line t))
799:
800: ;; remove trailing whitespaces in current line
801: (defun forth-remove-trailing ()
802: (save-excursion
803: (end-of-line)
804: (delete-region (point) (progn (skip-chars-backward " \t") (point)))))
805:
806: ;; insert newline, removing any trailing whitespaces in the current line
807: (defun forth-newline-remove-trailing ()
808: (save-excursion
809: (delete-region (point) (progn (skip-chars-backward " \t") (point))))
810: (newline))
811: ; (let ((was-point (point-marker)))
812: ; (unwind-protect
813: ; (progn (forward-line -1) (forth-remove-trailing))
814: ; (goto-char (was-point)))))
815:
816: ;; workaround for bug in `reindent-then-newline-and-indent'
817: (defun forth-reindent-then-newline-and-indent ()
818: (interactive "*")
819: (indent-according-to-mode)
820: (forth-newline-remove-trailing)
821: (indent-according-to-mode))
822:
823: ;;; end hilighting/indentation
824:
825: ;;; Block file encoding/decoding (dk)
826: ;;;
827:
828: (defconst forth-c/l 64 "Number of characters per block line")
829: (defconst forth-l/b 16 "Number of lines per block")
830:
831: ;; Check whether the unconverted block file line, point is in, does not
832: ;; contain `\n' and `\t' characters.
833: (defun forth-check-block-line (line)
834: (let ((end (save-excursion (beginning-of-line) (forward-char forth-c/l)
835: (point))))
836: (save-excursion
837: (beginning-of-line)
838: (when (search-forward "\n" end t)
839: (message "Warning: line %i contains newline character #10" line)
840: (ding t))
841: (beginning-of-line)
842: (when (search-forward "\t" end t)
843: (message "Warning: line %i contains tab character #8" line)
844: (ding t)))))
845:
846: (defun forth-convert-from-block (from to)
847: "Convert block file format to stream source in current buffer."
848: (let ((line (count-lines (point-min) from)))
849: (save-excursion
850: (goto-char from)
851: (set-mark to)
852: (while (< (+ (point) forth-c/l) (mark t))
853: (setq line (1+ line))
854: (forth-check-block-line line)
855: (forward-char forth-c/l)
856: (forth-newline-remove-trailing))
857: (when (= (+ (point) forth-c/l) (mark t))
858: (forth-remove-trailing))
859: (mark t))))
860:
861: ;; Pad a line of a block file up to `forth-c/l' characters, positioning `point'
862: ;; at the end of line.
863: (defun forth-pad-block-line ()
864: (save-excursion
865: (end-of-line)
866: (if (<= (current-column) forth-c/l)
867: (move-to-column forth-c/l t)
868: (message "Line %i longer than %i characters, truncated"
869: (count-lines (point-min) (point)) forth-c/l)
870: (ding t)
871: (move-to-column forth-c/l t)
872: (delete-region (point) (progn (end-of-line) (point))))))
873:
874: ;; Replace tab characters in current line by spaces.
875: (defun forth-convert-tabs-in-line ()
876: (save-excursion
877: (beginning-of-line)
878: (while (search-forward "\t" (save-excursion (end-of-line) (point)) t)
879: (backward-char)
880: (delete-region (point) (1+ (point)))
881: (insert-char ?\ (- tab-width (% (current-column) tab-width))))))
882:
883: ;; Delete newline at end of current line, concatenating it with the following
884: ;; line. Place `point' at end of newly formed line.
885: (defun forth-delete-newline ()
886: (end-of-line)
887: (delete-region (point) (progn (beginning-of-line 2) (point))))
888:
889: (defun forth-convert-to-block (from to &optional original-buffer)
890: "Convert range of text to block file format in current buffer."
891: (let* ((lines 0)) ; I have to count lines myself, since `count-lines' has
892: ; problems with trailing newlines...
893: (save-excursion
894: (goto-char from)
895: (set-mark to)
896: ;; pad lines to full length (`forth-c/l' characters per line)
897: (while (< (save-excursion (end-of-line) (point)) (mark t))
898: (setq lines (1+ lines))
899: (forth-pad-block-line)
900: (forth-convert-tabs-in-line)
901: (forward-line))
902: ;; also make sure the last line is padded, if `to' is at its end
903: (end-of-line)
904: (when (= (point) (mark t))
905: (setq lines (1+ lines))
906: (forth-pad-block-line)
907: (forth-convert-tabs-in-line))
908: ;; remove newlines between lines
909: (goto-char from)
910: (while (< (save-excursion (end-of-line) (point)) (mark t))
911: (forth-delete-newline))
912: ;; append empty lines, until last block is complete
913: (goto-char (mark t))
914: (let* ((required (* (/ (+ lines (1- forth-l/b)) forth-l/b) forth-l/b))
915: (pad-lines (- required lines)))
916: (while (> pad-lines 0)
917: (insert-char ?\ forth-c/l)
918: (setq pad-lines (1- pad-lines))))
919: (point))))
920:
921: (defun forth-detect-block-file-p ()
922: "Return non-nil if the current buffer is in block file format. Detection is
923: done by checking whether the first line has 1024 characters or more."
924: (save-restriction
925: (widen)
926: (save-excursion
927: (goto-char (point-min))
928: (end-of-line)
929: (>= (current-column) 1024))))
930:
931: ;; add block file conversion routines to `format-alist'
932: (defconst forth-block-format-description
933: '(forth-blocks "Forth block source file" nil
934: forth-convert-from-block forth-convert-to-block
935: t normal-mode))
936: (unless (memq forth-block-format-description format-alist)
937: (setq format-alist (cons forth-block-format-description format-alist)))
938:
939: ;;; End block file encoding/decoding
940:
941: ;;; Block file editing
942: ;;;
943: (defvar forth-overlay-arrow-string ">>")
944: (defvar forth-block-base 1 "Number of first block in block file")
945: (defvar forth-show-screen nil
946: "Non-nil means to show screen starts and numbers (for block files)")
947: (defvar forth-warn-long-lines nil
948: "Non-nil means to warn about lines that are longer than 64 characters")
949:
950: (defvar forth-screen-marker nil)
951: (defvar forth-screen-number-string nil)
952:
953: (defun forth-update-show-screen ()
954: "If `forth-show-screen' is non-nil, put overlay arrow to start of screen,
955: `point' is in. If arrow now points to different screen than before, display
956: screen number."
957: (if (not forth-show-screen)
958: (setq overlay-arrow-string nil)
959: (save-excursion
960: (let* ((line (count-lines (point-min) (min (point-max) (1+ (point)))))
961: (first-line (1+ (* (/ (1- line) forth-l/b) forth-l/b)))
962: (scr (+ forth-block-base (/ first-line forth-l/b))))
963: (setq overlay-arrow-string forth-overlay-arrow-string)
964: (goto-line first-line)
965: (setq overlay-arrow-position forth-screen-marker)
966: (set-marker forth-screen-marker
967: (save-excursion (goto-line first-line) (point)))
968: (setq forth-screen-number-string (format "%d" scr))))))
969:
970: (add-hook 'forth-motion-hooks 'forth-update-show-screen)
971:
972: (defun forth-update-warn-long-lines ()
973: "If `forth-warn-long-lines' is non-nil, display a warning whenever a line
974: exceeds 64 characters."
975: (when forth-warn-long-lines
976: (when (> (save-excursion (end-of-line) (current-column)) forth-c/l)
977: (message "Warning: current line exceeds %i characters"
978: forth-c/l))))
979:
980: (add-hook 'forth-motion-hooks 'forth-update-warn-long-lines)
981:
982: (defvar forth-was-point nil)
983: (defun forth-check-motion ()
984: "Run `forth-motion-hooks', if `point' changed since last call."
985: (when (or (eq forth-was-point nil) (/= forth-was-point (point)))
986: (setq forth-was-point (point))
987: (run-hooks 'forth-motion-hooks)))
988:
989: ;;; End block file editing
990:
991:
992: (defvar forth-mode-abbrev-table nil
993: "Abbrev table in use in Forth-mode buffers.")
994:
995: (define-abbrev-table 'forth-mode-abbrev-table ())
996:
997: (defvar forth-mode-map nil
998: "Keymap used in Forth mode.")
999:
1000: (if (not forth-mode-map)
1001: (setq forth-mode-map (make-sparse-keymap)))
1002:
1003: ;(define-key forth-mode-map "\M-\C-x" 'compile)
1004: (define-key forth-mode-map "\C-x\\" 'comment-region)
1005: (define-key forth-mode-map "\C-x~" 'forth-remove-tracers)
1006: (define-key forth-mode-map "\e\C-m" 'forth-send-paragraph)
1007: (define-key forth-mode-map "\eo" 'forth-send-buffer)
1008: (define-key forth-mode-map "\C-x\C-m" 'forth-split)
1009: (define-key forth-mode-map "\e " 'forth-reload)
1010: (define-key forth-mode-map "\t" 'forth-indent-command)
1011: (define-key forth-mode-map "\C-m" 'forth-reindent-then-newline-and-indent)
1012: (define-key forth-mode-map "\M-q" 'forth-fill-paragraph)
1013: (define-key forth-mode-map "\e." 'forth-find-tag)
1014:
1015: ;setup for C-h C-i to work
1016: (require 'info-look nil t)
1017: (when (require 'info-look nil t)
1018: (info-lookup-add-help
1019: :topic 'symbol
1020: :mode 'forth-mode
1021: :regexp "[^
1022: ]+"
1023: :ignore-case t
1024: :doc-spec '(("(gforth)Name Index" nil "`" "' "))))
1025:
1026: (require 'etags)
1027:
1028: (defun forth-find-tag (tagname &optional next-p regexp-p)
1029: (interactive (find-tag-interactive "Find tag: "))
1030: (unless (or regexp-p next-p)
1031: (setq tagname (concat "\\(^\\|\\s-\\)\\(" (regexp-quote tagname)
1032: "\\)\\(\\s-\\|$\\)")))
1033: (switch-to-buffer
1034: (find-tag-noselect tagname next-p t)))
1035:
1036: (defvar forth-mode-syntax-table nil
1037: "Syntax table in use in Forth-mode buffers.")
1038:
1039: ;; Important: hilighting/indentation now depends on a correct syntax table.
1040: ;; All characters, except whitespace *must* belong to the "word constituent"
1041: ;; syntax class. If different behaviour is required, use of Categories might
1042: ;; help.
1043: (if (not forth-mode-syntax-table)
1044: (progn
1045: (setq forth-mode-syntax-table (make-syntax-table))
1046: (let ((char 0))
1047: (while (< char ?!)
1048: (modify-syntax-entry char " " forth-mode-syntax-table)
1049: (setq char (1+ char)))
1050: (while (< char 256)
1051: (modify-syntax-entry char "w" forth-mode-syntax-table)
1052: (setq char (1+ char))))
1053: ))
1054:
1055:
1056: (defun forth-mode-variables ()
1057: (set-syntax-table forth-mode-syntax-table)
1058: (setq local-abbrev-table forth-mode-abbrev-table)
1059: (make-local-variable 'paragraph-start)
1060: (setq paragraph-start (concat "^$\\|" page-delimiter))
1061: (make-local-variable 'paragraph-separate)
1062: (setq paragraph-separate paragraph-start)
1063: (make-local-variable 'indent-line-function)
1064: (setq indent-line-function 'forth-indent-line)
1065: ; (make-local-variable 'require-final-newline)
1066: ; (setq require-final-newline t)
1067: (make-local-variable 'comment-start)
1068: (setq comment-start "\\ ")
1069: ;(make-local-variable 'comment-end)
1070: ;(setq comment-end " )")
1071: (make-local-variable 'comment-column)
1072: (setq comment-column 40)
1073: (make-local-variable 'comment-start-skip)
1074: (setq comment-start-skip "\\ ")
1075: (make-local-variable 'comment-indent-function)
1076: (setq comment-indent-function 'forth-comment-indent)
1077: (make-local-variable 'parse-sexp-ignore-comments)
1078: (setq parse-sexp-ignore-comments t)
1079: (setq case-fold-search t)
1080: (make-local-variable 'forth-was-point)
1081: (setq forth-was-point -1)
1082: (make-local-variable 'forth-words)
1083: (make-local-variable 'forth-compiled-words)
1084: (make-local-variable 'forth-compiled-indent-words)
1085: (make-local-variable 'forth-hilight-level)
1086: (make-local-variable 'after-change-functions)
1087: (make-local-variable 'post-command-hook)
1088: (make-local-variable 'forth-show-screen)
1089: (make-local-variable 'forth-screen-marker)
1090: (make-local-variable 'forth-warn-long-lines)
1091: (make-local-variable 'forth-screen-number-string)
1092: (make-local-variable 'forth-use-oof)
1093: (make-local-variable 'forth-use-objects)
1094: (setq forth-screen-marker (copy-marker 0))
1095: (add-hook 'after-change-functions 'forth-change-function)
1096: (add-hook 'post-command-hook 'forth-check-motion)
1097: (if (>= emacs-major-version 21)
1098: (add-hook 'fontification-functions 'forth-fontification-function))
1099: (setq imenu-create-index-function 'forth-create-index))
1100:
1101: ;;;###autoload
1102: (defun forth-mode ()
1103: "
1104: Major mode for editing Forth code. Tab indents for Forth code. Comments
1105: are delimited with \\ and newline. Paragraphs are separated by blank lines
1106: only. Block files are autodetected, when read, and converted to normal
1107: stream source format. See also `forth-block-mode'.
1108: \\{forth-mode-map}
1109: Forth-split
1110: Positions the current buffer on top and a forth-interaction window
1111: below. The window size is controlled by the forth-percent-height
1112: variable (see below).
1113: Forth-reload
1114: Reloads the forth library and restarts the forth process.
1115: Forth-send-buffer
1116: Sends the current buffer, in text representation, as input to the
1117: forth process.
1118: Forth-send-paragraph
1119: Sends the previous or the current paragraph to the forth-process.
1120: Note that the cursor only need to be with in the paragraph to be sent.
1121: forth-documentation
1122: Search for documentation of forward adjacent to cursor. Note! To use
1123: this mode you have to add a line, to your .emacs file, defining the
1124: directories to search through for documentation files (se variable
1125: forth-help-load-path below) e.g. (setq forth-help-load-path '(nil)).
1126:
1127: Variables controlling interaction and startup
1128: forth-percent-height
1129: Tells split how high to make the edit portion, in percent of the
1130: current screen height.
1131: forth-program-name
1132: Tells the library which program name to execute in the interation
1133: window.
1134:
1135: Variables controlling syntax hilighting/recognition of parsed text:
1136: `forth-words'
1137: List of words that have a special parsing behaviour and/or should be
1138: hilighted. Add custom words by setting forth-custom-words in your
1139: .emacs, or by setting forth-local-words, in source-files' local
1140: variables lists.
1141: forth-use-objects
1142: Set this variable to non-nil in your .emacs, or in a local variables
1143: list, to hilight and recognize the words from the \"Objects\" package
1144: for object-oriented programming.
1145: forth-use-oof
1146: Same as above, just for the \"OOF\" package.
1147: forth-custom-words
1148: List of custom Forth words to prepend to `forth-words'. Should be set
1149: in your .emacs.
1150: forth-local-words
1151: List of words to prepend to `forth-words', whenever a forth-mode
1152: buffer is created. That variable should be set by Forth sources, using
1153: a local variables list at the end of file, to get file-specific
1154: hilighting.
1155: 0 [IF]
1156: Local Variables: ...
1157: forth-local-words: ...
1158: End:
1159: [THEN]
1160: forth-hilight-level
1161: Controls how much syntax hilighting is done. Should be in the range
1162: 0..3
1163:
1164: Variables controlling indentation style:
1165: `forth-indent-words'
1166: List of words that influence indentation.
1167: forth-local-indent-words
1168: List of words to prepend to `forth-indent-words', similar to
1169: forth-local-words. Should be used for specifying file-specific
1170: indentation, using a local variables list.
1171: forth-custom-indent-words
1172: List of words to prepend to `forth-indent-words'. Should be set in your
1173: .emacs.
1174: forth-indent-level
1175: Indentation increment/decrement of Forth statements.
1176: forth-minor-indent-level
1177: Minor indentation increment/decrement of Forth statemens.
1178:
1179: Variables controlling block-file editing:
1180: forth-show-screen
1181: Non-nil means, that the start of the current screen is marked by an
1182: overlay arrow, and screen numbers are displayed in the mode line.
1183: This variable is by default nil for `forth-mode' and t for
1184: `forth-block-mode'.
1185: forth-overlay-arrow-string
1186: String to display as the overlay arrow, when `forth-show-screen' is t.
1187: Setting this variable to nil disables the overlay arrow.
1188: forth-block-base
1189: Screen number of the first block in a block file. Defaults to 1.
1190: forth-warn-long-lines
1191: Non-nil means that a warning message is displayed whenever you edit or
1192: move over a line that is longer than 64 characters (the maximum line
1193: length that can be stored into a block file). This variable defaults to
1194: t for `forth-block-mode' and to nil for `forth-mode'.
1195:
1196: Variables controling documentation search
1197: forth-help-load-path
1198: List of directories to search through to find *.doc
1199: (forth-help-file-suffix) files. Nil means current default directory.
1200: The specified directories must contain at least one .doc file. If it
1201: does not and you still want the load-path to scan that directory, create
1202: an empty file dummy.doc.
1203: forth-help-file-suffix
1204: The file names to search for in each directory specified by
1205: forth-help-load-path. Defaulted to '*.doc'.
1206: "
1207: (interactive)
1208: (kill-all-local-variables)
1209: (use-local-map forth-mode-map)
1210: (setq mode-name "Forth")
1211: (setq major-mode 'forth-mode)
1212: ;; convert buffer contents from block file format, if necessary
1213: (when (forth-detect-block-file-p)
1214: (widen)
1215: (message "Converting from Forth block source...")
1216: (forth-convert-from-block (point-min) (point-max))
1217: (message "Converting from Forth block source...done"))
1218: ;; if user switched from forth-block-mode to forth-mode, make sure the file
1219: ;; is now stored as normal strem source
1220: (when (equal buffer-file-format '(forth-blocks))
1221: (setq buffer-file-format nil))
1222: (forth-mode-variables)
1223: ; (if (not (forth-process-running-p))
1224: ; (run-forth forth-program-name))
1225: (run-hooks 'forth-mode-hook))
1226:
1227: ;;;###autoload
1228: (define-derived-mode forth-block-mode forth-mode "Forth Block Source"
1229: "Major mode for editing Forth block source files, derived from
1230: `forth-mode'. Differences to `forth-mode' are:
1231: * files are converted to block format, when written (`buffer-file-format'
1232: is set to `(forth-blocks)')
1233: * `forth-show-screen' and `forth-warn-long-lines' are t by default
1234:
1235: Note that the length of lines in block files is limited to 64 characters.
1236: When writing longer lines to a block file, a warning is displayed in the
1237: echo area and the line is truncated.
1238:
1239: Another problem is imposed by block files that contain newline or tab
1240: characters. When Emacs converts such files back to block file format,
1241: it'll translate those characters to a number of spaces. However, when
1242: you read such a file, a warning message is displayed in the echo area,
1243: including a line number that may help you to locate and fix the problem.
1244:
1245: So have a look at the *Messages* buffer, whenever you hear (or see) Emacs'
1246: bell during block file read/write operations."
1247: (setq buffer-file-format '(forth-blocks))
1248: (setq forth-show-screen t)
1249: (setq forth-warn-long-lines t)
1250: (setq forth-screen-number-string (format "%d" forth-block-base))
1251: (setq mode-line-format (append (reverse (cdr (reverse mode-line-format)))
1252: '("--S" forth-screen-number-string "-%-"))))
1253:
1254: (add-hook 'forth-mode-hook
1255: '(lambda ()
1256: (make-local-variable 'compile-command)
1257: (setq compile-command "gforth ")
1258: (forth-hack-local-variables)
1259: (forth-customize-words)
1260: (forth-compile-words)
1261: (unless (and forth-jit-parser (>= emacs-major-version 21))
1262: (forth-change-function (point-min) (point-max) nil t))))
1263:
1264: (defun forth-fill-paragraph ()
1265: "Fill comments (starting with '\'; do not fill code (block style
1266: programmers who tend to fill code won't use emacs anyway:-)."
1267: ; Currently only comments at the start of the line are filled.
1268: ; Something like lisp-fill-paragraph may be better. We cannot use
1269: ; fill-paragraph, because it removes the \ from the first comment
1270: ; line. Therefore we have to look for the first line of the comment
1271: ; and use fill-region.
1272: (interactive)
1273: (save-excursion
1274: (beginning-of-line)
1275: (while (and
1276: (= (forward-line -1) 0)
1277: (looking-at "[ \t]*\\\\g?[ \t]+")))
1278: (if (not (looking-at "[ \t]*\\\\g?[ \t]+"))
1279: (forward-line 1))
1280: (let ((from (point))
1281: (to (save-excursion (forward-paragraph) (point))))
1282: (if (looking-at "[ \t]*\\\\g?[ \t]+")
1283: (progn (goto-char (match-end 0))
1284: (set-fill-prefix)
1285: (fill-region from to nil))))))
1286:
1287: (defun forth-comment-indent ()
1288: (save-excursion
1289: (beginning-of-line)
1290: (if (looking-at ":[ \t]*")
1291: (progn
1292: (end-of-line)
1293: (skip-chars-backward " \t\n")
1294: (1+ (current-column)))
1295: comment-column)))
1296:
1297:
1298: ;; Forth commands
1299:
1300: (defun forth-remove-tracers ()
1301: "Remove tracers of the form `~~ '. Queries the user for each occurrence."
1302: (interactive)
1303: (query-replace-regexp "\\(~~ \\| ~~$\\)" "" nil))
1304:
1305: (defvar forth-program-name "gforth"
1306: "*Program invoked by the `run-forth' command.")
1307:
1308: (defvar forth-band-name nil
1309: "*Band loaded by the `run-forth' command.")
1310:
1311: (defvar forth-program-arguments nil
1312: "*Arguments passed to the Forth program by the `run-forth' command.")
1313:
1314: (defun run-forth (command-line)
1315: "Run an inferior Forth process. Output goes to the buffer `*forth*'.
1316: With argument, asks for a command line. Split up screen and run forth
1317: in the lower portion. The current-buffer when called will stay in the
1318: upper portion of the screen, and all other windows are deleted.
1319: Call run-forth again to make the *forth* buffer appear in the lower
1320: part of the screen."
1321: (interactive
1322: (list (let ((default
1323: (or forth-process-command-line
1324: (forth-default-command-line))))
1325: (if current-prefix-arg
1326: (read-string "Run Forth: " default)
1327: default))))
1328: (setq forth-process-command-line command-line)
1329: (forth-start-process command-line)
1330: (forth-split)
1331: (forth-set-runlight forth-runlight:input))
1332:
1333: (defun run-forth-if-not ()
1334: (if (not (forth-process-running-p))
1335: (run-forth forth-program-name)))
1336:
1337: (defun reset-forth ()
1338: "Reset the Forth process."
1339: (interactive)
1340: (let ((process (get-process forth-program-name)))
1341: (cond ((or (not process)
1342: (not (eq (process-status process) 'run))
1343: (yes-or-no-p
1344: "The Forth process is running, are you SURE you want to reset it? "))
1345: (message "Resetting Forth process...")
1346: (forth-reload)
1347: (message "Resetting Forth process...done")))))
1348:
1349: (defun forth-default-command-line ()
1350: (concat forth-program-name
1351: (if forth-program-arguments
1352: (concat " " forth-program-arguments)
1353: "")))
1354:
1355: ;;;; Internal Variables
1356:
1357: (defvar forth-process-command-line nil
1358: "Command used to start the most recent Forth process.")
1359:
1360: (defvar forth-previous-send ""
1361: "Most recent expression transmitted to the Forth process.")
1362:
1363: (defvar forth-process-filter-queue '()
1364: "Queue used to synchronize filter actions properly.")
1365:
1366: (defvar forth-prompt "ok"
1367: "The current forth prompt string.")
1368:
1369: (defvar forth-start-hook nil
1370: "If non-nil, a procedure to call when the Forth process is started.
1371: When called, the current buffer will be the Forth process-buffer.")
1372:
1373: (defvar forth-signal-death-message nil
1374: "If non-nil, causes a message to be generated when the Forth process dies.")
1375:
1376: (defvar forth-percent-height 50
1377: "Tells run-forth how high the upper window should be in percent.")
1378:
1379: (defconst forth-runlight:input ?I
1380: "The character displayed when the Forth process is waiting for input.")
1381:
1382: (defvar forth-mode-string ""
1383: "String displayed in the mode line when the Forth process is running.")
1384:
1385: ;;;; Evaluation Commands
1386:
1387: (defun forth-send-string (&rest strings)
1388: "Send the string arguments to the Forth process.
1389: The strings are concatenated and terminated by a newline."
1390: (cond ((forth-process-running-p)
1391: (forth-send-string-1 strings))
1392: ((yes-or-no-p "The Forth process has died. Reset it? ")
1393: (reset-forth)
1394: (goto-char (point-max))
1395: (forth-send-string-1 strings))))
1396:
1397: (defun forth-send-string-1 (strings)
1398: (let ((string (apply 'concat strings)))
1399: (forth-send-string-2 string)))
1400:
1401: (defun forth-send-string-2 (string)
1402: (let ((process (get-process forth-program-name)))
1403: (if (not (eq (current-buffer) (get-buffer forth-program-name)))
1404: (progn
1405: (forth-process-filter-output string)
1406: (forth-process-filter:finish)))
1407: (send-string process (concat string "\n"))
1408: (if (eq (current-buffer) (process-buffer process))
1409: (set-marker (process-mark process) (point)))))
1410:
1411:
1412: (defun forth-send-region (start end)
1413: "Send the current region to the Forth process.
1414: The region is sent terminated by a newline."
1415: (interactive "r")
1416: (let ((process (get-process forth-program-name)))
1417: (if (and process (eq (current-buffer) (process-buffer process)))
1418: (progn (goto-char end)
1419: (set-marker (process-mark process) end))))
1420: (forth-send-string "\n" (buffer-substring start end) "\n"))
1421:
1422: (defun forth-end-of-paragraph ()
1423: (if (looking-at "[\t\n ]+") (skip-chars-backward "\t\n "))
1424: (if (not (re-search-forward "\n[ \t]*\n" nil t))
1425: (goto-char (point-max))))
1426:
1427: (defun forth-send-paragraph ()
1428: "Send the current or the previous paragraph to the Forth process"
1429: (interactive)
1430: (let (end)
1431: (save-excursion
1432: (forth-end-of-paragraph)
1433: (skip-chars-backward "\t\n ")
1434: (setq end (point))
1435: (if (re-search-backward "\n[ \t]*\n" nil t)
1436: (setq start (point))
1437: (goto-char (point-min)))
1438: (skip-chars-forward "\t\n ")
1439: (forth-send-region (point) end))))
1440:
1441: (defun forth-send-buffer ()
1442: "Send the current buffer to the Forth process."
1443: (interactive)
1444: (if (eq (current-buffer) (forth-process-buffer))
1445: (error "Not allowed to send this buffer's contents to Forth"))
1446: (forth-send-region (point-min) (point-max)))
1447:
1448:
1449: ;;;; Basic Process Control
1450:
1451: (defun forth-start-process (command-line)
1452: (let ((buffer (get-buffer-create "*forth*")))
1453: (let ((process (get-buffer-process buffer)))
1454: (save-excursion
1455: (set-buffer buffer)
1456: (progn (if process (delete-process process))
1457: (goto-char (point-max))
1458: (setq mode-line-process '(": %s"))
1459: (add-to-global-mode-string 'forth-mode-string)
1460: (setq process
1461: (apply 'start-process
1462: (cons forth-program-name
1463: (cons buffer
1464: (forth-parse-command-line
1465: command-line)))))
1466: (set-marker (process-mark process) (point-max))
1467: (forth-process-filter-initialize t)
1468: (forth-modeline-initialize)
1469: (set-process-sentinel process 'forth-process-sentinel)
1470: (set-process-filter process 'forth-process-filter)
1471: (run-hooks 'forth-start-hook)))
1472: buffer)))
1473:
1474: (defun forth-parse-command-line (string)
1475: (setq string (substitute-in-file-name string))
1476: (let ((start 0)
1477: (result '()))
1478: (while start
1479: (let ((index (string-match "[ \t]" string start)))
1480: (setq start
1481: (cond ((not index)
1482: (setq result
1483: (cons (substring string start)
1484: result))
1485: nil)
1486: ((= index start)
1487: (string-match "[^ \t]" string start))
1488: (t
1489: (setq result
1490: (cons (substring string start index)
1491: result))
1492: (1+ index))))))
1493: (nreverse result)))
1494:
1495:
1496: (defun forth-process-running-p ()
1497: "True iff there is a Forth process whose status is `run'."
1498: (let ((process (get-process forth-program-name)))
1499: (and process
1500: (eq (process-status process) 'run))))
1501:
1502: (defun forth-process-buffer ()
1503: (let ((process (get-process forth-program-name)))
1504: (and process (process-buffer process))))
1505:
1506: ;;;; Process Filter
1507:
1508: (defun forth-process-sentinel (proc reason)
1509: (let ((inhibit-quit nil))
1510: (forth-process-filter-initialize (eq reason 'run))
1511: (if (eq reason 'run)
1512: (forth-modeline-initialize)
1513: (setq forth-mode-string "")))
1514: (if (and (not (memq reason '(run stop)))
1515: forth-signal-death-message)
1516: (progn (beep)
1517: (message
1518: "The Forth process has died! Do M-x reset-forth to restart it"))))
1519:
1520: (defun forth-process-filter-initialize (running-p)
1521: (setq forth-process-filter-queue (cons '() '()))
1522: (setq forth-prompt "ok"))
1523:
1524:
1525: (defun forth-process-filter (proc string)
1526: (forth-process-filter-output string)
1527: (forth-process-filter:finish))
1528:
1529: (defun forth-process-filter:enqueue (action)
1530: (let ((next (cons action '())))
1531: (if (cdr forth-process-filter-queue)
1532: (setcdr (cdr forth-process-filter-queue) next)
1533: (setcar forth-process-filter-queue next))
1534: (setcdr forth-process-filter-queue next)))
1535:
1536: (defun forth-process-filter:finish ()
1537: (while (car forth-process-filter-queue)
1538: (let ((next (car forth-process-filter-queue)))
1539: (setcar forth-process-filter-queue (cdr next))
1540: (if (not (cdr next))
1541: (setcdr forth-process-filter-queue '()))
1542: (apply (car (car next)) (cdr (car next))))))
1543:
1544: ;;;; Process Filter Output
1545:
1546: (defun forth-process-filter-output (&rest args)
1547: (if (not (and args
1548: (null (cdr args))
1549: (stringp (car args))
1550: (string-equal "" (car args))))
1551: (forth-process-filter:enqueue
1552: (cons 'forth-process-filter-output-1 args))))
1553:
1554: (defun forth-process-filter-output-1 (&rest args)
1555: (save-excursion
1556: (forth-goto-output-point)
1557: (apply 'insert-before-markers args)))
1558:
1559: (defun forth-guarantee-newlines (n)
1560: (save-excursion
1561: (forth-goto-output-point)
1562: (let ((stop nil))
1563: (while (and (not stop)
1564: (bolp))
1565: (setq n (1- n))
1566: (if (bobp)
1567: (setq stop t)
1568: (backward-char))))
1569: (forth-goto-output-point)
1570: (while (> n 0)
1571: (insert-before-markers ?\n)
1572: (setq n (1- n)))))
1573:
1574: (defun forth-goto-output-point ()
1575: (let ((process (get-process forth-program-name)))
1576: (set-buffer (process-buffer process))
1577: (goto-char (process-mark process))))
1578:
1579: (defun forth-modeline-initialize ()
1580: (setq forth-mode-string " "))
1581:
1582: (defun forth-set-runlight (runlight)
1583: (aset forth-mode-string 0 runlight)
1584: (forth-modeline-redisplay))
1585:
1586: (defun forth-modeline-redisplay ()
1587: (save-excursion (set-buffer (other-buffer)))
1588: (set-buffer-modified-p (buffer-modified-p))
1589: (sit-for 0))
1590:
1591: ;;;; Process Filter Operations
1592:
1593: (defun add-to-global-mode-string (x)
1594: (cond ((null global-mode-string)
1595: (setq global-mode-string (list "" x " ")))
1596: ((not (memq x global-mode-string))
1597: (setq global-mode-string
1598: (cons ""
1599: (cons x
1600: (cons " "
1601: (if (equal "" (car global-mode-string))
1602: (cdr global-mode-string)
1603: global-mode-string))))))))
1604:
1605:
1606: ;; Misc
1607:
1608: (setq auto-mode-alist (append auto-mode-alist
1609: '(("\\.fs$" . forth-mode))))
1610:
1611: (defun forth-split ()
1612: (interactive)
1613: (forth-split-1 "*forth*"))
1614:
1615: (defun forth-split-1 (buffer)
1616: (if (not (eq (window-buffer) (get-buffer buffer)))
1617: (progn
1618: (delete-other-windows)
1619: (split-window-vertically
1620: (/ (* (screen-height) forth-percent-height) 100))
1621: (other-window 1)
1622: (switch-to-buffer buffer)
1623: (goto-char (point-max))
1624: (other-window 1))))
1625:
1626: (defun forth-reload ()
1627: (interactive)
1628: (let ((process (get-process forth-program-name)))
1629: (if process (kill-process process t)))
1630: (sleep-for 0 100)
1631: (forth-mode))
1632:
1633:
1634: ;; Special section for forth-help
1635:
1636: (defvar forth-help-buffer "*Forth-help*"
1637: "Buffer used to display the requested documentation.")
1638:
1639: (defvar forth-help-load-path nil
1640: "List of directories to search through to find *.doc
1641: (forth-help-file-suffix) files. Nil means current default directory.
1642: The specified directories must contain at least one .doc file. If it
1643: does not and you still want the load-path to scan that directory, create
1644: an empty file dummy.doc.")
1645:
1646: (defvar forth-help-file-suffix "*.doc"
1647: "The file names to search for in each directory.")
1648:
1649: (setq forth-search-command-prefix "grep -n \"^ [^(]* ")
1650: (defvar forth-search-command-suffix "/dev/null")
1651: (defvar forth-grep-error-regexp ": No such file or directory")
1652:
1653: (defun forth-function-called-at-point ()
1654: "Return the space delimited word a point."
1655: (save-excursion
1656: (save-restriction
1657: (narrow-to-region (max (point-min) (- (point) 1000)) (point-max))
1658: (skip-chars-backward "^ \t\n" (point-min))
1659: (if (looking-at "[ \t\n]")
1660: (forward-char 1))
1661: (let (obj (p (point)))
1662: (skip-chars-forward "^ \t\n")
1663: (buffer-substring p (point))))))
1664:
1665: (defun forth-help-names-extend-comp (path-list result)
1666: (cond ((null path-list) result)
1667: ((null (car path-list))
1668: (forth-help-names-extend-comp (cdr path-list)
1669: (concat result forth-help-file-suffix " ")))
1670: (t (forth-help-names-extend-comp
1671: (cdr path-list) (concat result
1672: (expand-file-name (car path-list)) "/"
1673: forth-help-file-suffix " ")))))
1674:
1675: (defun forth-help-names-extended ()
1676: (if forth-help-load-path
1677: (forth-help-names-extend-comp forth-help-load-path "")
1678: (error "forth-help-load-path not specified")))
1679:
1680:
1681: ;(define-key forth-mode-map "\C-hf" 'forth-documentation)
1682:
1683: (defun forth-documentation (function)
1684: "Display the full documentation of FORTH word."
1685: (interactive
1686: (let ((fn (forth-function-called-at-point))
1687: (enable-recursive-minibuffers t)
1688: search-list
1689: val)
1690: (setq val (read-string (format "Describe forth word (default %s): " fn)))
1691: (list (if (equal val "") fn val))))
1692: (forth-get-doc (concat forth-search-command-prefix
1693: (grep-regexp-quote (concat function " ("))
1694: "[^)]*\-\-\" " (forth-help-names-extended)
1695: forth-search-command-suffix))
1696: (message "C-x C-m switches back to the forth interaction window"))
1697:
1698: (defun forth-get-doc (command)
1699: "Display the full documentation of command."
1700: (let ((curwin (get-buffer-window (window-buffer)))
1701: reswin
1702: pointmax)
1703: (with-output-to-temp-buffer forth-help-buffer
1704: (progn
1705: (call-process "sh" nil forth-help-buffer t "-c" command)
1706: (setq reswin (get-buffer-window forth-help-buffer))))
1707: (setq reswin (get-buffer-window forth-help-buffer))
1708: (select-window reswin)
1709: (save-excursion
1710: (goto-char (setq pointmax (point-max)))
1711: (insert "--------------------\n\n"))
1712: (let (fd doc)
1713: (while (setq fd (forth-get-file-data pointmax))
1714: (setq doc (forth-get-doc-string fd))
1715: (save-excursion
1716: (goto-char (point-max))
1717: (insert (substring (car fd) (string-match "[^/]*$" (car fd)))
1718: ":\n\n" doc "\n")))
1719: (if (not doc)
1720: (progn (goto-char (point-max)) (insert "Not found"))))
1721: (select-window curwin)))
1722:
1723: (defun forth-skip-error-lines ()
1724: (let ((lines 0))
1725: (save-excursion
1726: (while (re-search-forward forth-grep-error-regexp nil t)
1727: (beginning-of-line)
1728: (forward-line 1)
1729: (setq lines (1+ lines))))
1730: (forward-line lines)))
1731:
1732: (defun forth-get-doc-string (fd)
1733: "Find file (car fd) and extract documentation from line (nth 1 fd)."
1734: (let (result)
1735: (save-window-excursion
1736: (find-file (car fd))
1737: (goto-line (nth 1 fd))
1738: (if (not (eq (nth 1 fd) (1+ (count-lines (point-min) (point)))))
1739: (error "forth-get-doc-string: serious error"))
1740: (if (not (re-search-backward "\n[\t ]*\n" nil t))
1741: (goto-char (point-min))
1742: (goto-char (match-end 0)))
1743: (let ((p (point)))
1744: (if (not (re-search-forward "\n[\t ]*\n" nil t))
1745: (goto-char (point-max)))
1746: (setq result (buffer-substring p (point))))
1747: (bury-buffer (current-buffer)))
1748: result))
1749:
1750: (defun forth-get-file-data (limit)
1751: "Parse grep output and return '(filename line#) list. Return nil when
1752: passing limit."
1753: (forth-skip-error-lines)
1754: (if (< (point) limit)
1755: (let ((result (forth-get-file-data-cont limit)))
1756: (forward-line 1)
1757: (beginning-of-line)
1758: result)))
1759:
1760: (defun forth-get-file-data-cont (limit)
1761: (let (result)
1762: (let ((p (point)))
1763: (skip-chars-forward "^:")
1764: (setq result (buffer-substring p (point))))
1765: (if (< (point) limit)
1766: (let ((p (1+ (point))))
1767: (forward-char 1)
1768: (skip-chars-forward "^:")
1769: (list result (string-to-int (buffer-substring p (point))))))))
1770:
1771: (defun grep-regexp-quote (str)
1772: (let ((i 0) (m 1) (res ""))
1773: (while (/= m 0)
1774: (setq m (string-to-char (substring str i)))
1775: (if (/= m 0)
1776: (progn
1777: (setq i (1+ i))
1778: (if (string-match (regexp-quote (char-to-string m))
1779: ".*\\^$[]")
1780: (setq res (concat res "\\")))
1781: (setq res (concat res (char-to-string m))))))
1782: res))
1783:
1784:
1785: (define-key forth-mode-map "\C-x\C-e" 'compile)
1786: (define-key forth-mode-map "\C-x\C-n" 'next-error)
1787: (require 'compile)
1788:
1789: (defvar forth-compile-command "gforth ")
1790: ;(defvar forth-compilation-window-percent-height 30)
1791:
1792: (defun forth-compile (command)
1793: (interactive (list (setq forth-compile-command (read-string "Compile command: " forth-compile-command))))
1794: (forth-split-1 "*compilation*")
1795: (setq ctools-compile-command command)
1796: (compile1 ctools-compile-command "No more errors"))
1797:
1798:
1799: ;;; Forth menu
1800: ;;; Mikael Karlsson <qramika@eras70.ericsson.se>
1801:
1802: (cond ((string-match "XEmacs\\|Lucid" emacs-version)
1803: (require 'func-menu)
1804:
1805: (defconst fume-function-name-regexp-forth
1806: "^\\(:\\)[ \t]+\\([^ \t]*\\)"
1807: "Expression to get word definitions in Forth.")
1808:
1809: (setq fume-function-name-regexp-alist
1810: (append '((forth-mode . fume-function-name-regexp-forth)
1811: ) fume-function-name-regexp-alist))
1812:
1813: ;; Find next forth word in the buffer
1814: (defun fume-find-next-forth-function-name (buffer)
1815: "Searches for the next forth word in BUFFER."
1816: (set-buffer buffer)
1817: (if (re-search-forward fume-function-name-regexp nil t)
1818: (let ((beg (match-beginning 2))
1819: (end (match-end 2)))
1820: (cons (buffer-substring beg end) beg))))
1821:
1822: (setq fume-find-function-name-method-alist
1823: (append '((forth-mode . fume-find-next-forth-function-name))))
1824:
1825: ))
1826: ;;; End Forth menu
1827:
1828: ;;; File folding of forth-files
1829: ;;; uses outline
1830: ;;; Toggle activation with M-x fold-f (when editing a forth-file)
1831: ;;; Use f9 to expand, f10 to hide, Or the menubar in xemacs
1832: ;;;
1833: ;;; Works most of the times but loses sync with the cursor occasionally
1834: ;;; Could be improved by also folding on comments
1835:
1836: (require 'outline)
1837:
1838: (defun f-outline-level ()
1839: (cond ((looking-at "\\`\\\\")
1840: 0)
1841: ((looking-at "\\\\ SEC")
1842: 0)
1843: ((looking-at "\\\\ \\\\ .*")
1844: 0)
1845: ((looking-at "\\\\ DEFS")
1846: 1)
1847: ((looking-at "\\/\\* ")
1848: 1)
1849: ((looking-at ": .*")
1850: 1)
1851: ((looking-at "\\\\G")
1852: 2)
1853: ((looking-at "[ \t]+\\\\")
1854: 3)))
1855:
1856: (defun fold-f ()
1857: (interactive)
1858: (add-hook 'outline-minor-mode-hook 'hide-body)
1859:
1860: ; outline mode header start, i.e. find word definitions
1861: ;;; (setq outline-regexp "^\\(:\\)[ \t]+\\([^ \t]*\\)")
1862: (setq outline-regexp "\\`\\\\\\|:\\|\\\\ SEC\\|\\\\G\\|[ \t]+\\\\\\|\\\\ DEFS\\|\\/\\*\\|\\\\ \\\\ .*")
1863: (setq outline-level 'f-outline-level)
1864:
1865: (outline-minor-mode)
1866: (define-key outline-minor-mode-map '(shift up) 'hide-sublevels)
1867: (define-key outline-minor-mode-map '(shift right) 'show-children)
1868: (define-key outline-minor-mode-map '(shift left) 'hide-subtree)
1869: (define-key outline-minor-mode-map '(shift down) 'show-subtree))
1870:
1871: ;;(define-key global-map '(shift up) 'fold-f)
1872:
1873: ;;; end file folding
1874:
1875: ;;; func-menu is a package that scans your source file for function definitions
1876: ;;; and makes a menubar entry that lets you jump to any particular function
1877: ;;; definition by selecting it from the menu. The following code turns this on
1878: ;;; for all of the recognized languages. Scanning the buffer takes some time,
1879: ;;; but not much.
1880: ;;;
1881: (cond ((string-match "XEmacs\\|Lucid" emacs-version)
1882: (require 'func-menu)
1883: ;; (define-key global-map 'f8 'function-menu)
1884: (add-hook 'find-fible-hooks 'fume-add-menubar-entry)
1885: ; (define-key global-map "\C-cg" 'fume-prompt-function-goto)
1886: ; (define-key global-map '(shift button3) 'mouse-function-menu)
1887: ))
1888:
1889: (provide 'forth-mode)
1890:
1891: ;;; gforth.el ends here
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