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: ;; Tested with Emacs 19.34, 20.5, 21.1 and XEmacs 21.1
37:
38: ;;-------------------------------------------------------------------
39: ;; A Forth indentation, documentation search and interaction library
40: ;;-------------------------------------------------------------------
41: ;;
42: ;; Written by Goran Rydqvist, gorry@ida.liu.se, Summer 1988
43: ;; Started: 16 July 88
44: ;; Version: 2.10
45: ;; Last update: 5 December 1989 by Mikael Patel, mip@ida.liu.se
46: ;; Last update: 25 June 1990 by Goran Rydqvist, gorry@ida.liu.se
47: ;;
48: ;; Documentation: See forth-mode (^HF forth-mode)
49: ;;-------------------------------------------------------------------
50:
51: ;;; Code:
52:
53: ;(setq debug-on-error t)
54:
55: ;; Code ripped from `version.el' for compatability with Emacs versions
56: ;; prior to 19.23.
57: (if (not (boundp 'emacs-major-version))
58: (defconst emacs-major-version
59: (progn (string-match "^[0-9]+" emacs-version)
60: (string-to-int (match-string 0 emacs-version)))))
61:
62: (defun forth-emacs-older (major minor)
63: (or (< emacs-major-version major)
64: (and (= emacs-major-version major) (< emacs-minor-version minor))))
65:
66: ;; Code ripped from `subr.el' for compatability with Emacs versions
67: ;; prior to 20.1
68: (eval-when-compile
69: (if (forth-emacs-older 20 1)
70: (progn
71: (defmacro when (cond &rest body)
72: "If COND yields non-nil, do BODY, else return nil."
73: (list 'if cond (cons 'progn body)))
74: (defmacro unless (cond &rest body)
75: "If COND yields nil, do BODY, else return nil."
76: (cons 'if (cons cond (cons nil body)))))))
77:
78: ;; `no-error' argument of require not supported in Emacs versions
79: ;; prior to 20.4 :-(
80: (defun forth-require (feature)
81: (condition-case err (require feature) (error nil)))
82:
83: (require 'font-lock)
84:
85: ;; define `font-lock-warning-face' in emacs-versions prior to 20.1
86: ;; (ripped from `font-lock.el')
87: (unless (boundp 'font-lock-warning-face)
88: (message "defining font-lock-warning-face")
89: (make-face 'font-lock-warning-face)
90: (defvar font-lock-warning-face 'font-lock-warning-face)
91: (set-face-foreground font-lock-warning-face "red")
92: (make-face-bold font-lock-warning-face))
93:
94: ;; define `font-lock-constant-face' in XEmacs (just copy
95: ;; `font-lock-preprocessor-face')
96: (unless (boundp 'font-lock-constant-face)
97: (copy-face font-lock-preprocessor-face 'font-lock-constant-face))
98:
99:
100: ;; define `regexp-opt' in emacs versions prior to 20.1
101: ;; (this implementation is extremely inefficient, though)
102: (eval-and-compile (forth-require 'regexp-opt))
103: (unless (memq 'regexp-opt features)
104: (message (concat
105: "Warning: your Emacs version doesn't support `regexp-opt'. "
106: "Hilighting will be slow."))
107: (defun regexp-opt (STRINGS &optional PAREN)
108: (let ((open (if PAREN "\\(" "")) (close (if PAREN "\\)" "")))
109: (concat open (mapconcat 'regexp-quote STRINGS "\\|") close)))
110: (defun regexp-opt-depth (re)
111: (if (string= (substring re 0 2) "\\(") 1 0)))
112:
113: ; todo:
114: ;
115:
116: ; Wörter ordentlich hilighten, die nicht auf Whitespace beginnen ( ..)IF
117: ; -- mit aktueller Konzeption nicht möglich??
118: ;
119: ; Konfiguration über customization groups
120: ;
121: ; Bereich nur auf Wortanfang/ende ausweiten, wenn Anfang bzw Ende in einem
122: ; Wort liegen (?) -- speed!
123: ;
124: ; 'forth-word' property muss eindeutig sein!
125: ;
126: ; Forth-Menu
127: ;
128: ; Interface zu GForth Prozessen (Patches von Michael Scholz)
129: ;
130: ; Byte-compile-Code rausschmeißen, Compilieren im Makefile über Emacs
131: ; batch-Modus
132: ;
133: ; forth-help Kram rausschmeißen
134: ;
135: ; XEmacs Kompatibilität? imenu/speedbar -> fume?
136: ;
137: ; Folding neuschreiben (neue Parser-Informationen benutzen)
138:
139: ;;; Motion-hooking (dk)
140: ;;;
141: (defun forth-idle-function ()
142: "Function that is called when Emacs is idle to detect cursor motion
143: in forth-block-mode buffers (which is mainly used for screen number
144: display in). Currently ignores forth-mode buffers but that may change
145: in the future."
146: (if (eq major-mode 'forth-block-mode)
147: (forth-check-motion)))
148:
149: (defvar forth-idle-function-timer nil
150: "Timer that runs `forth-idle-function' or nil if no timer installed.")
151:
152: (defun forth-install-motion-hook ()
153: "Install the motion-hooking mechanism. Currently uses idle timers
154: but might be transparently changed in the future."
155: (unless forth-idle-function-timer
156: ;; install idle function only once (first time forth-mode is used)
157: (setq forth-idle-function-timer
158: (run-with-idle-timer .05 t 'forth-idle-function))))
159:
160: (defvar forth-was-point nil)
161:
162: (defun forth-check-motion ()
163: "Run `forth-motion-hooks', if `point' changed since last call. This
164: used to be called via `post-command-hook' but uses idle timers now as
165: users complaint about lagging performance."
166: (when (or (eq forth-was-point nil) (/= forth-was-point (point)))
167: (setq forth-was-point (point))
168: (run-hooks 'forth-motion-hooks)))
169:
170:
171: ;;; Hilighting and indentation engine (dk)
172: ;;;
173: (defvar forth-disable-parser nil
174: "*Non-nil means to disable on-the-fly parsing of Forth-code.
175:
176: This will disable hilighting of forth-mode buffers and will decrease
177: the smartness of the indentation engine. Only set it to non-nil, if
178: your computer is very slow. To disable hilighting, set
179: `forth-hilight-level' to zero.")
180:
181: (defvar forth-jit-parser nil
182: "*Non-nil means to parse Forth-code just-in-time.
183:
184: This eliminates the need for initially parsing forth-mode buffers and
185: thus speeds up loading of Forth files. That feature is only available
186: in Emacs21 (and newer versions).")
187:
188: (defvar forth-words nil
189: "List of words for hilighting and recognition of parsed text areas.
190:
191: Hilighting of object-oriented Forth code is achieved, by appending either
192: `forth-objects-words' or `forth-oof-words' to the list, depending on the values of `forth-use-objects' or `forth-use-oof'.
193:
194: After `forth-words' changed, `forth-compile-words' must be called to
195: make the changes take effect.
196:
197: Each item of `forth-words' has the form
198: (MATCHER TYPE HILIGHT . &optional PARSED-TEXT ...)
199:
200: MATCHER is either a list of strings to match, or a REGEXP.
201: If it's a REGEXP, it should not be surrounded by '\\<' or '\\>', since
202: that'll be done automatically by the search routines.
203:
204: TYPE should be one of 'definiton-starter', 'definition-ender', 'compile-only',
205: 'immediate' or 'non-immediate'. Those information are required to determine
206: whether a word actually parses (and whether that parsed text needs to be
207: hilighted).
208:
209: HILIGHT is a cons cell of the form (FACE . MINIMUM-LEVEL)
210: Where MINIMUM-LEVEL specifies the minimum value of `forth-hilight-level',
211: that's required for matching text to be hilighted.
212:
213: PARSED-TEXT specifies whether and how a word parses following text. You can
214: specify as many subsequent PARSED-TEXT as you wish, but that shouldn't be
215: necessary very often. It has the following form:
216: (DELIM-REGEXP SKIP-LEADING-FLAG PARSED-TYPE HILIGHT)
217:
218: DELIM-REGEXP is a regular expression that should match strings of length 1,
219: which are delimiters for the parsed text.
220:
221: A non-nil value for PARSE-LEADING-FLAG means, that leading delimiter strings
222: before parsed text should be skipped. This is the parsing behaviour of the
223: Forth word WORD. Set it to t for name-parsing words, nil for comments and
224: strings.
225:
226: PARSED-TYPE specifies what kind of text is parsed. It should be on of 'name',
227: 'string' or 'comment'.")
228: (setq forth-words
229: '(
230: (("[") definition-ender (font-lock-keyword-face . 1))
231: (("]" "]l") definition-starter (font-lock-keyword-face . 1))
232: ((":") definition-starter (font-lock-keyword-face . 1)
233: "[ \t\n]" t name (font-lock-function-name-face . 3))
234: (("immediate" "compile-only" "restrict")
235: immediate (font-lock-keyword-face . 1))
236: (("does>") compile-only (font-lock-keyword-face . 1))
237: ((":noname") definition-starter (font-lock-keyword-face . 1))
238: ((";" ";code") definition-ender (font-lock-keyword-face . 1))
239: (("include" "require" "needs" "use")
240: non-immediate (font-lock-keyword-face . 1)
241: "[\n\t ]" t string (font-lock-string-face . 1))
242: (("included" "required" "thru" "load")
243: non-immediate (font-lock-keyword-face . 1))
244: (("[char]") compile-only (font-lock-keyword-face . 1)
245: "[ \t\n]" t string (font-lock-string-face . 1))
246: (("char") non-immediate (font-lock-keyword-face . 1)
247: "[ \t\n]" t string (font-lock-string-face . 1))
248: (("s\"" "c\"") immediate (font-lock-string-face . 1)
249: "[\"\n]" nil string (font-lock-string-face . 1))
250: ((".\"") compile-only (font-lock-string-face . 1)
251: "[\"\n]" nil string (font-lock-string-face . 1))
252: (("abort\"") compile-only (font-lock-keyword-face . 1)
253: "[\"\n]" nil string (font-lock-string-face . 1))
254: (("{") compile-only (font-lock-variable-name-face . 1)
255: "[\n}]" nil name (font-lock-variable-name-face . 1))
256: ((".(" "(") immediate (font-lock-comment-face . 1)
257: ")" nil comment (font-lock-comment-face . 1))
258: (("\\" "\\G") immediate (font-lock-comment-face . 1)
259: "[\n]" nil comment (font-lock-comment-face . 1))
260:
261: (("[if]" "[?do]" "[do]" "[for]" "[begin]"
262: "[endif]" "[then]" "[loop]" "[+loop]" "[next]" "[until]" "[repeat]"
263: "[again]" "[while]" "[else]")
264: immediate (font-lock-keyword-face . 2))
265: (("[ifdef]" "[ifundef]") immediate (font-lock-keyword-face . 2)
266: "[ \t\n]" t name (font-lock-function-name-face . 3))
267: (("if" "begin" "ahead" "do" "?do" "+do" "u+do" "-do" "u-do" "for"
268: "case" "of" "?dup-if" "?dup-0=-if" "then" "endif" "until"
269: "repeat" "again" "leave" "?leave"
270: "loop" "+loop" "-loop" "next" "endcase" "endof" "else" "while" "try"
271: "recover" "endtry" "assert(" "assert0(" "assert1(" "assert2("
272: "assert3(" ")" "<interpretation" "<compilation" "interpretation>"
273: "compilation>")
274: compile-only (font-lock-keyword-face . 2))
275:
276: (("true" "false" "c/l" "bl" "cell" "pi" "w/o" "r/o" "r/w")
277: non-immediate (font-lock-constant-face . 2))
278: (("~~" "break:" "dbg") compile-only (font-lock-warning-face . 2))
279: (("break\"") compile-only (font-lock-warning-face . 1)
280: "[\"\n]" nil string (font-lock-string-face . 1))
281: (("postpone" "[is]" "defers" "[']" "[compile]")
282: compile-only (font-lock-keyword-face . 2)
283: "[ \t\n]" t name (font-lock-function-name-face . 3))
284: (("is" "what's") immediate (font-lock-keyword-face . 2)
285: "[ \t\n]" t name (font-lock-function-name-face . 3))
286: (("<is>" "'" "see") non-immediate (font-lock-keyword-face . 2)
287: "[ \t\n]" t name (font-lock-function-name-face . 3))
288: (("[to]") compile-only (font-lock-keyword-face . 2)
289: "[ \t\n]" t name (font-lock-variable-name-face . 3))
290: (("to") immediate (font-lock-keyword-face . 2)
291: "[ \t\n]" t name (font-lock-variable-name-face . 3))
292: (("<to>") non-immediate (font-lock-keyword-face . 2)
293: "[ \t\n]" t name (font-lock-variable-name-face . 3))
294:
295: (("create" "variable" "constant" "2variable" "2constant" "fvariable"
296: "fconstant" "value" "field" "user" "vocabulary"
297: "create-interpret/compile")
298: non-immediate (font-lock-type-face . 2)
299: "[ \t\n]" t name (font-lock-variable-name-face . 3))
300: ("\\S-+%" non-immediate (font-lock-type-face . 2))
301: (("defer" "alias" "create-interpret/compile:")
302: non-immediate (font-lock-type-face . 1)
303: "[ \t\n]" t name (font-lock-function-name-face . 3))
304: (("end-struct") non-immediate (font-lock-keyword-face . 2)
305: "[ \t\n]" t name (font-lock-type-face . 3))
306: (("struct") non-immediate (font-lock-keyword-face . 2))
307: ("-?[0-9]+\\(\\.[0-9]*e\\(-?[0-9]+\\)?\\|\\.?[0-9a-f]*\\)"
308: immediate (font-lock-constant-face . 3))
309: ))
310:
311: (defvar forth-use-objects nil
312: "*Non-nil makes forth-mode also hilight words from the \"Objects\" package.")
313: (defvar forth-objects-words
314: '(((":m") definition-starter (font-lock-keyword-face . 1)
315: "[ \t\n]" t name (font-lock-function-name-face . 3))
316: (("m:") definition-starter (font-lock-keyword-face . 1))
317: ((";m") definition-ender (font-lock-keyword-face . 1))
318: (("[current]" "[parent]") compile-only (font-lock-keyword-face . 1)
319: "[ \t\n]" t name (font-lock-function-name-face . 3))
320: (("current" "overrides") non-immediate (font-lock-keyword-face . 2)
321: "[ \t\n]" t name (font-lock-function-name-face . 3))
322: (("[to-inst]") compile-only (font-lock-keyword-face . 2)
323: "[ \t\n]" t name (font-lock-variable-name-face . 3))
324: (("[bind]") compile-only (font-lock-keyword-face . 2)
325: "[ \t\n]" t name (font-lock-type-face . 3)
326: "[ \t\n]" t name (font-lock-function-name-face . 3))
327: (("bind") non-immediate (font-lock-keyword-face . 2)
328: "[ \t\n]" t name (font-lock-type-face . 3)
329: "[ \t\n]" t name (font-lock-function-name-face . 3))
330: (("inst-var" "inst-value") non-immediate (font-lock-type-face . 2)
331: "[ \t\n]" t name (font-lock-variable-name-face . 3))
332: (("method" "selector")
333: non-immediate (font-lock-type-face . 1)
334: "[ \t\n]" t name (font-lock-function-name-face . 3))
335: (("end-class" "end-interface")
336: non-immediate (font-lock-keyword-face . 2)
337: "[ \t\n]" t name (font-lock-type-face . 3))
338: (("public" "protected" "class" "exitm" "implementation" "interface"
339: "methods" "end-methods" "this")
340: non-immediate (font-lock-keyword-face . 2))
341: (("object") non-immediate (font-lock-type-face . 2)))
342: "Hilighting description for words of the \"Objects\" package")
343:
344:
345: (defvar forth-use-oof nil
346: "*Non-nil makes forth-mode also hilight words from the \"OOF\" package.")
347: (defvar forth-oof-words
348: '((("class") non-immediate (font-lock-keyword-face . 2)
349: "[ \t\n]" t name (font-lock-type-face . 3))
350: (("var") non-immediate (font-lock-type-face . 2)
351: "[ \t\n]" t name (font-lock-variable-name-face . 3))
352: (("method" "early") non-immediate (font-lock-type-face . 2)
353: "[ \t\n]" t name (font-lock-function-name-face . 3))
354: (("::" "super" "bind" "bound" "link")
355: immediate (font-lock-keyword-face . 2)
356: "[ \t\n]" t name (font-lock-function-name-face . 3))
357: (("ptr" "asptr" "[]")
358: immediate (font-lock-keyword-face . 2)
359: "[ \t\n]" t name (font-lock-variable-name-face . 3))
360: (("class;" "how:" "self" "new" "new[]" "definitions" "class?" "with"
361: "endwith")
362: non-immediate (font-lock-keyword-face . 2))
363: (("object") non-immediate (font-lock-type-face . 2)))
364: "Hilighting description for words of the \"OOF\" package")
365:
366: (defvar forth-local-words nil
367: "List of Forth words to prepend to `forth-words'. Should be set by a
368: forth source, using a local variables list at the end of the file
369: (\"Local Variables: ... forth-local-words: ... End:\" construct).")
370:
371: (defvar forth-custom-words nil
372: "List of Forth words to prepend to `forth-words'. Should be set in your
373: .emacs.")
374:
375: (defvar forth-hilight-level 3 "*Level of hilighting of Forth code.")
376:
377: (defvar forth-compiled-words nil "Compiled representation of `forth-words'.")
378:
379: (defvar forth-indent-words nil
380: "List of words that have indentation behaviour.
381: Each element of `forth-indent-words' should have the form
382: (MATCHER INDENT1 INDENT2 &optional TYPE)
383:
384: MATCHER is either a list of strings to match, or a REGEXP.
385: If it's a REGEXP, it should not be surrounded by `\\<` or `\\>`, since
386: that'll be done automatically by the search routines.
387:
388: TYPE might be omitted. If it's specified, the only allowed value is
389: currently the symbol `non-immediate', meaning that the word will not
390: have any effect on indentation inside definitions. (:NONAME is a good
391: example for this kind of word).
392:
393: INDENT1 specifies how to indent a word that's located at the beginning
394: of a line, following any number of whitespaces.
395:
396: INDENT2 specifies how to indent words that are not located at the
397: beginning of a line.
398:
399: INDENT1 and INDENT2 are indentation specifications of the form
400: (SELF-INDENT . NEXT-INDENT), where SELF-INDENT is a numerical value,
401: specifying how the matching line and all following lines are to be
402: indented, relative to previous lines. NEXT-INDENT specifies how to indent
403: following lines, relative to the matching line.
404:
405: Even values of SELF-INDENT and NEXT-INDENT correspond to multiples of
406: `forth-indent-level'. Odd values get an additional
407: `forth-minor-indent-level' added/substracted. Eg a value of -2 indents
408: 1 * forth-indent-level to the left, wheras 3 indents
409: 1 * forth-indent-level + forth-minor-indent-level columns to the right.")
410:
411: (setq forth-indent-words
412: '((("if" "begin" "do" "?do" "+do" "-do" "u+do"
413: "u-do" "?dup-if" "?dup-0=-if" "case" "of" "try"
414: "[if]" "[ifdef]" "[ifundef]" "[begin]" "[for]" "[do]" "[?do]")
415: (0 . 2) (0 . 2))
416: ((":" ":noname" "code" "struct" "m:" ":m" "class" "interface")
417: (0 . 2) (0 . 2) non-immediate)
418: ("\\S-+%$" (0 . 2) (0 . 0) non-immediate)
419: ((";" ";m") (-2 . 0) (0 . -2))
420: (("again" "then" "endif" "endtry" "endcase" "endof"
421: "[then]" "[endif]" "[loop]" "[+loop]" "[next]"
422: "[until]" "[again]" "loop")
423: (-2 . 0) (0 . -2))
424: (("end-code" "end-class" "end-interface" "end-class-noname"
425: "end-interface-noname" "end-struct" "class;")
426: (-2 . 0) (0 . -2) non-immediate)
427: (("protected" "public" "how:") (-1 . 1) (0 . 0) non-immediate)
428: (("+loop" "-loop" "until") (-2 . 0) (-2 . 0))
429: (("else" "recover" "[else]") (-2 . 2) (0 . 0))
430: (("does>") (-1 . 1) (0 . 0))
431: (("while" "[while]") (-2 . 4) (0 . 2))
432: (("repeat" "[repeat]") (-4 . 0) (0 . -4))
433: (("\\g") (-2 . 2) (0 . 0))))
434:
435: (defvar forth-local-indent-words nil
436: "List of Forth words to prepend to `forth-indent-words', when a forth-mode
437: buffer is created. Should be set by a Forth source, using a local variables
438: list at the end of the file (\"Local Variables: ... forth-local-words: ...
439: End:\" construct).")
440:
441: (defvar forth-custom-indent-words nil
442: "List of Forth words to prepend to `forth-indent-words'. Should be set in
443: your .emacs.")
444:
445: (defvar forth-indent-level 4
446: "*Indentation of Forth statements.")
447: (defvar forth-minor-indent-level 2
448: "*Minor indentation of Forth statements.")
449: (defvar forth-compiled-indent-words nil)
450:
451: ;(setq debug-on-error t)
452:
453: ;; Filter list by predicate. This is a somewhat standard function for
454: ;; functional programming languages. So why isn't it already implemented
455: ;; in Lisp??
456: (defun forth-filter (predicate list)
457: (let ((filtered nil))
458: (mapcar (lambda (item)
459: (when (funcall predicate item)
460: (if filtered
461: (nconc filtered (list item))
462: (setq filtered (cons item nil))))
463: nil) list)
464: filtered))
465:
466: ;; Helper function for `forth-compile-word': return whether word has to be
467: ;; added to the compiled word list, for syntactic parsing and hilighting.
468: (defun forth-words-filter (word)
469: (let* ((hilight (nth 2 word))
470: (level (cdr hilight))
471: (parsing-flag (nth 3 word)))
472: (or parsing-flag
473: (<= level forth-hilight-level))))
474:
475: ;; Helper function for `forth-compile-word': translate one entry from
476: ;; `forth-words' into the form (regexp regexp-depth word-description)
477: (defun forth-compile-words-mapper (word)
478: ;; warning: we cannot rely on regexp-opt's PAREN argument, since
479: ;; XEmacs will use shy parens by default :-(
480: (let* ((matcher (car word))
481: (regexp
482: (concat "\\(" (cond ((stringp matcher) matcher)
483: ((listp matcher) (regexp-opt matcher))
484: (t (error "Invalid matcher `%s'")))
485: "\\)"))
486: (depth (regexp-opt-depth regexp))
487: (description (cdr word)))
488: (list regexp depth description)))
489:
490: ;; Read `words' and create a compiled representation suitable for efficient
491: ;; parsing of the form
492: ;; (regexp (subexp-count word-description) (subexp-count2 word-description2)
493: ;; ...)
494: (defun forth-compile-wordlist (words)
495: (let* ((mapped (mapcar 'forth-compile-words-mapper words))
496: (regexp (concat "\\<\\("
497: (mapconcat 'car mapped "\\|")
498: "\\)\\>"))
499: (sub-count 2)
500: (sub-list (mapcar
501: (lambda (i)
502: (let ((sub (cons sub-count (nth 2 i))))
503: (setq sub-count (+ sub-count (nth 1 i)))
504: sub
505: ))
506: mapped)))
507: (let ((result (cons regexp sub-list)))
508: (byte-compile 'result)
509: result)))
510:
511: (defun forth-compile-words ()
512: "Compile the the words from `forth-words' and `forth-indent-words' into
513: the format that's later used for doing the actual hilighting/indentation.
514: Store the resulting compiled wordlists in `forth-compiled-words' and
515: `forth-compiled-indent-words', respective"
516: (setq forth-compiled-words
517: (forth-compile-wordlist
518: (forth-filter 'forth-words-filter forth-words)))
519: (setq forth-compiled-indent-words
520: (forth-compile-wordlist forth-indent-words)))
521:
522: (defun forth-hack-local-variables ()
523: "Parse and bind local variables, set in the contents of the current
524: forth-mode buffer. Prepend `forth-local-words' to `forth-words' and
525: `forth-local-indent-words' to `forth-indent-words'."
526: (hack-local-variables)
527: (setq forth-words (append forth-local-words forth-words))
528: (setq forth-indent-words (append forth-local-indent-words
529: forth-indent-words)))
530:
531: (defun forth-customize-words ()
532: "Add the words from `forth-custom-words' and `forth-custom-indent-words'
533: to `forth-words' and `forth-indent-words', respective. Add
534: `forth-objects-words' and/or `forth-oof-words' to `forth-words', if
535: `forth-use-objects' and/or `forth-use-oof', respective is set."
536: (setq forth-words (append forth-custom-words forth-words
537: (if forth-use-oof forth-oof-words nil)
538: (if forth-use-objects forth-objects-words nil)))
539: (setq forth-indent-words (append
540: forth-custom-indent-words forth-indent-words)))
541:
542:
543:
544: ;; get location of first character of previous forth word that's got
545: ;; properties
546: (defun forth-previous-start (pos)
547: (let* ((word (get-text-property pos 'forth-word))
548: (prev (previous-single-property-change
549: (min (point-max) (1+ pos)) 'forth-word
550: (current-buffer) (point-min))))
551: (if (or (= (point-min) prev) word) prev
552: (if (get-text-property (1- prev) 'forth-word)
553: (previous-single-property-change
554: prev 'forth-word (current-buffer) (point-min))
555: (point-min)))))
556:
557: ;; Get location of the last character of the current/next forth word that's
558: ;; got properties, text that's parsed by the word is considered as parts of
559: ;; the word.
560: (defun forth-next-end (pos)
561: (let* ((word (get-text-property pos 'forth-word))
562: (next (next-single-property-change pos 'forth-word
563: (current-buffer) (point-max))))
564: (if word next
565: (if (get-text-property next 'forth-word)
566: (next-single-property-change
567: next 'forth-word (current-buffer) (point-max))
568: (point-max)))))
569:
570: (defun forth-next-whitespace (pos)
571: (save-excursion
572: (goto-char pos)
573: (skip-syntax-forward "-" (point-max))
574: (point)))
575: (defun forth-previous-word (pos)
576: (save-excursion
577: (goto-char pos)
578: (re-search-backward "\\<" pos (point-min) 1)
579: (point)))
580:
581: ;; Delete all properties, used by Forth mode, from `from' to `to'.
582: (defun forth-delete-properties (from to)
583: (remove-text-properties
584: from to '(face nil fontified nil
585: forth-parsed nil forth-word nil forth-state nil)))
586:
587: ;; Get the index of the branch of the most recently evaluated regular
588: ;; expression that matched. (used for identifying branches "a\\|b\\|c...")
589: (defun forth-get-regexp-branch ()
590: (let ((count 2))
591: (while (not (condition-case err (match-beginning count)
592: (args-out-of-range t))) ; XEmacs requires error handling
593: (setq count (1+ count)))
594: count))
595:
596: ;; seek to next forth-word and return its "word-description"
597: (defun forth-next-known-forth-word (to)
598: (if (<= (point) to)
599: (progn
600: (let* ((regexp (car forth-compiled-words))
601: (pos (re-search-forward regexp to t)))
602: (if pos (let ((branch (forth-get-regexp-branch))
603: (descr (cdr forth-compiled-words)))
604: (goto-char (match-beginning 0))
605: (cdr (assoc branch descr)))
606: 'nil)))
607: nil))
608:
609: ;; Set properties of forth word at `point', eventually parsing subsequent
610: ;; words, and parsing all whitespaces. Set point to delimiter after word.
611: ;; The word, including it's parsed text gets the `forth-word' property, whose
612: ;; value is unique, and may be used for getting the word's start/end
613: ;; positions.
614: (defun forth-set-word-properties (state data)
615: (let* ((start (point))
616: (end (progn (re-search-forward "[ \t]\\|$" (point-max) 1)
617: (point)))
618: (type (car data))
619: (hilight (nth 1 data))
620: (bad-word (and (not state) (eq type 'compile-only)))
621: (hlface (if bad-word font-lock-warning-face
622: (if (<= (cdr hilight) forth-hilight-level)
623: (car hilight) nil))))
624: (when hlface (put-text-property start end 'face hlface))
625: ;; if word parses in current state, process parsed range of text
626: (when (or (not state) (eq type 'compile-only) (eq type 'immediate))
627: (let ((parse-data (nthcdr 2 data)))
628: (while parse-data
629: (let ((delim (nth 0 parse-data))
630: (skip-leading (nth 1 parse-data))
631: (parse-type (nth 2 parse-data))
632: (parsed-hilight (nth 3 parse-data))
633: (parse-start (point))
634: (parse-end))
635: (when skip-leading
636: (while (and (looking-at delim) (> (match-end 0) (point))
637: (not (looking-at "\n")))
638: (forward-char)))
639: (re-search-forward delim (point-max) 1)
640: (setq parse-end (point))
641: (forth-delete-properties end parse-end)
642: (when (<= (cdr parsed-hilight) forth-hilight-level)
643: (put-text-property
644: parse-start parse-end 'face (car parsed-hilight)))
645: (put-text-property
646: parse-start parse-end 'forth-parsed parse-type)
647: (setq end parse-end)
648: (setq parse-data (nthcdr 4 parse-data))))))
649: (put-text-property start end 'forth-word start)))
650:
651: ;; Search for known Forth words in the range `from' to `to', using
652: ;; `forth-next-known-forth-word' and set their properties via
653: ;; `forth-set-word-properties'.
654: (defun forth-update-properties (from to &optional loudly)
655: (save-excursion
656: (let ((msg-count 0) (state) (word-descr) (last-location))
657: (goto-char (forth-previous-word (forth-previous-start
658: (max (point-min) (1- from)))))
659: (setq to (forth-next-end (min (point-max) (1+ to))))
660: ;; `to' must be on a space delimiter, if a parsing word was changed
661: (setq to (forth-next-whitespace to))
662: (setq state (get-text-property (point) 'forth-state))
663: (setq last-location (point))
664: (forth-delete-properties (point) to)
665: (put-text-property (point) to 'fontified t)
666: ;; hilight loop...
667: (while (setq word-descr (forth-next-known-forth-word to))
668: (when loudly
669: (when (equal 0 (% msg-count 100))
670: (message "Parsing Forth code...%s"
671: (make-string (/ msg-count 100) ?.)))
672: (setq msg-count (1+ msg-count)))
673: (forth-set-word-properties state word-descr)
674: (when state (put-text-property last-location (point) 'forth-state t))
675: (let ((type (car word-descr)))
676: (if (eq type 'definition-starter) (setq state t))
677: (if (eq type 'definition-ender) (setq state nil))
678: (setq last-location (point))))
679: ;; update state property up to `to'
680: (if (and state (< (point) to))
681: (put-text-property last-location to 'forth-state t))
682: ;; extend search if following state properties differ from current state
683: (if (< to (point-max))
684: (if (not (equal state (get-text-property (1+ to) 'forth-state)))
685: (let ((extend-to (next-single-property-change
686: to 'forth-state (current-buffer) (point-max))))
687: (forth-update-properties to extend-to))
688: ))
689: )))
690:
691: ;; save-buffer-state borrowed from `font-lock.el'
692: (eval-when-compile
693: (defmacro forth-save-buffer-state (varlist &rest body)
694: "Bind variables according to VARLIST and eval BODY restoring buffer state."
695: (` (let* ((,@ (append varlist
696: '((modified (buffer-modified-p)) (buffer-undo-list t)
697: (inhibit-read-only t) (inhibit-point-motion-hooks t)
698: before-change-functions after-change-functions
699: deactivate-mark buffer-file-name buffer-file-truename))))
700: (,@ body)
701: (when (and (not modified) (buffer-modified-p))
702: (set-buffer-modified-p nil))))))
703:
704: ;; Function that is added to the `change-functions' hook. Calls
705: ;; `forth-update-properties' and keeps care of disabling undo information
706: ;; and stuff like that.
707: (defun forth-change-function (from to len &optional loudly)
708: (save-match-data
709: (forth-save-buffer-state
710: ()
711: (unless forth-disable-parser (forth-update-properties from to loudly))
712: (forth-update-warn-long-lines))))
713:
714: (defun forth-fontification-function (from)
715: "Function to be called from `fontification-functions' of Emacs 21."
716: (save-match-data
717: (forth-save-buffer-state
718: ((to (min (point-max) (+ from 100))))
719: (unless (or forth-disable-parser (not forth-jit-parser)
720: (get-text-property from 'fontified))
721: (forth-update-properties from to)))))
722:
723: (eval-when-compile
724: (byte-compile 'forth-set-word-properties)
725: (byte-compile 'forth-next-known-forth-word)
726: (byte-compile 'forth-update-properties)
727: (byte-compile 'forth-delete-properties)
728: (byte-compile 'forth-get-regexp-branch))
729:
730: ;;; imenu support
731: ;;;
732: (defvar forth-defining-words
733: '("VARIABLE" "CONSTANT" "2VARIABLE" "2CONSTANT" "FVARIABLE" "FCONSTANT"
734: "USER" "VALUE" "field" "end-struct" "VOCABULARY" "CREATE" ":" "CODE"
735: "DEFER" "ALIAS")
736: "List of words, that define the following word.
737: Used for imenu index generation.")
738:
739: (defvar forth-defining-words-regexp nil
740: "Regexp that's generated for matching `forth-defining-words'")
741:
742: (defun forth-next-definition-starter ()
743: (progn
744: (let* ((pos (re-search-forward forth-defining-words-regexp (point-max) t)))
745: (if pos
746: (if (or (text-property-not-all (match-beginning 0) (match-end 0)
747: 'forth-parsed nil)
748: (text-property-not-all (match-beginning 0) (match-end 0)
749: 'forth-state nil))
750: (forth-next-definition-starter)
751: t)
752: nil))))
753:
754: (defun forth-create-index ()
755: (let* ((forth-defining-words-regexp
756: (concat "\\<\\(" (regexp-opt forth-defining-words) "\\)\\>"))
757: (index nil))
758: (goto-char (point-min))
759: (while (forth-next-definition-starter)
760: (if (looking-at "[ \t]*\\([^ \t\n]+\\)")
761: (setq index (cons (cons (match-string 1) (point)) index))))
762: index))
763:
764: ;; top-level require is executed at byte-compile and load time
765: (eval-and-compile (forth-require 'speedbar))
766:
767: ;; this code is executed at load-time only
768: (when (memq 'speedbar features)
769: (speedbar-add-supported-extension ".fs")
770: (speedbar-add-supported-extension ".fb"))
771:
772: ;; (require 'profile)
773: ;; (setq profile-functions-list '(forth-set-word-properties forth-next-known-forth-word forth-update-properties forth-delete-properties forth-get-regexp-branch))
774:
775: ;;; Indentation
776: ;;;
777:
778: ;; Return, whether `pos' is the first forth word on its line
779: (defun forth-first-word-on-line-p (pos)
780: (save-excursion
781: (beginning-of-line)
782: (skip-chars-forward " \t")
783: (= pos (point))))
784:
785: ;; Return indentation data (SELF-INDENT . NEXT-INDENT) of next known
786: ;; indentation word, or nil if there is no word up to `to'.
787: ;; Position `point' at location just after found word, or at `to'. Parsed
788: ;; ranges of text will not be taken into consideration!
789: (defun forth-next-known-indent-word (to)
790: (if (<= (point) to)
791: (progn
792: (let* ((regexp (car forth-compiled-indent-words))
793: (pos (re-search-forward regexp to t)))
794: (if pos
795: (let* ((start (match-beginning 0))
796: (end (match-end 0))
797: (branch (forth-get-regexp-branch))
798: (descr (cdr forth-compiled-indent-words))
799: (indent (cdr (assoc branch descr)))
800: (type (nth 2 indent)))
801: ;; skip words that are parsed (strings/comments) and
802: ;; non-immediate words inside definitions
803: (if (or (text-property-not-all start end 'forth-parsed nil)
804: (and (eq type 'non-immediate)
805: (text-property-not-all start end
806: 'forth-state nil)))
807: (forth-next-known-indent-word to)
808: (if (forth-first-word-on-line-p (match-beginning 0))
809: (nth 0 indent) (nth 1 indent))))
810: nil)))
811: nil))
812:
813: ;; Translate indentation value `indent' to indentation column. Multiples of
814: ;; 2 correspond to multiples of `forth-indent-level'. Odd numbers get an
815: ;; additional `forth-minor-indent-level' added (or substracted).
816: (defun forth-convert-to-column (indent)
817: (let* ((sign (if (< indent 0) -1 1))
818: (value (abs indent))
819: (major (* (/ value 2) forth-indent-level))
820: (minor (* (% value 2) forth-minor-indent-level)))
821: (* sign (+ major minor))))
822:
823: ;; Return the column increment, that the current line of forth code does to
824: ;; the current or following lines. `which' specifies which indentation values
825: ;; to use. 0 means the indentation of following lines relative to current
826: ;; line, 1 means the indentation of the current line relative to the previous
827: ;; line. Return `nil', if there are no indentation words on the current line.
828: (defun forth-get-column-incr (which)
829: (save-excursion
830: (let ((regexp (car forth-compiled-indent-words))
831: (word-indent)
832: (self-indent nil)
833: (next-indent nil)
834: (to (save-excursion (end-of-line) (point))))
835: (beginning-of-line)
836: (while (setq word-indent (forth-next-known-indent-word to))
837: (let* ((self-incr (car word-indent))
838: (next-incr (cdr word-indent))
839: (self-column-incr (forth-convert-to-column self-incr))
840: (next-column-incr (forth-convert-to-column next-incr)))
841: (setq next-indent (if next-indent next-indent 0))
842: (setq self-indent (if self-indent self-indent 0))
843: (if (or (and (> next-indent 0) (< self-column-incr 0))
844: (and (< next-indent 0) (> self-column-incr 0)))
845: (setq next-indent (+ next-indent self-column-incr))
846: (setq self-indent (+ self-indent self-column-incr)))
847: (setq next-indent (+ next-indent next-column-incr))))
848: (nth which (list self-indent next-indent)))))
849:
850: ;; Find previous line that contains indentation words, return the column,
851: ;; to which following text should be indented to.
852: (defun forth-get-anchor-column ()
853: (save-excursion
854: (if (/= 0 (forward-line -1)) 0
855: (let ((indent))
856: (while (not (or (setq indent (forth-get-column-incr 1))
857: (<= (point) (point-min))))
858: (forward-line -1))
859: (+ (current-indentation) (if indent indent 0))))))
860:
861: (defun forth-indent-line (&optional flag)
862: "Correct indentation of the current Forth line."
863: (let* ((anchor (forth-get-anchor-column))
864: (column-incr (forth-get-column-incr 0)))
865: (forth-indent-to (if column-incr (+ anchor column-incr) anchor))))
866:
867: (defun forth-current-column ()
868: (- (point) (save-excursion (beginning-of-line) (point))))
869: (defun forth-current-indentation ()
870: (- (save-excursion (beginning-of-line) (forward-to-indentation 0) (point))
871: (save-excursion (beginning-of-line) (point))))
872:
873: (defun forth-indent-to (x)
874: (let ((p nil))
875: (setq p (- (forth-current-column) (forth-current-indentation)))
876: (forth-delete-indentation)
877: (beginning-of-line)
878: (indent-to x)
879: (if (> p 0) (forward-char p))))
880:
881: (defun forth-delete-indentation ()
882: (save-excursion
883: (delete-region
884: (progn (beginning-of-line) (point))
885: (progn (back-to-indentation) (point)))))
886:
887: (defun forth-indent-command ()
888: (interactive)
889: (forth-indent-line t))
890:
891: ;; remove trailing whitespaces in current line
892: (defun forth-remove-trailing ()
893: (save-excursion
894: (end-of-line)
895: (delete-region (point) (progn (skip-chars-backward " \t") (point)))))
896:
897: ;; insert newline, removing any trailing whitespaces in the current line
898: (defun forth-newline-remove-trailing ()
899: (save-excursion
900: (delete-region (point) (progn (skip-chars-backward " \t") (point))))
901: (newline))
902: ; (let ((was-point (point-marker)))
903: ; (unwind-protect
904: ; (progn (forward-line -1) (forth-remove-trailing))
905: ; (goto-char (was-point)))))
906:
907: ;; workaround for bug in `reindent-then-newline-and-indent'
908: (defun forth-reindent-then-newline-and-indent ()
909: (interactive "*")
910: (indent-according-to-mode)
911: (forth-newline-remove-trailing)
912: (indent-according-to-mode))
913:
914:
915: ;;; Block file encoding/decoding (dk)
916: ;;;
917:
918: (defconst forth-c/l 64 "Number of characters per block line")
919: (defconst forth-l/b 16 "Number of lines per block")
920:
921: ;; Check whether the unconverted block file line, point is in, does not
922: ;; contain `\n' and `\t' characters.
923: (defun forth-check-block-line (line)
924: (let ((end (save-excursion (beginning-of-line) (forward-char forth-c/l)
925: (point))))
926: (save-excursion
927: (beginning-of-line)
928: (when (search-forward "\n" end t)
929: (message "Warning: line %i contains newline character #10" line)
930: (ding t))
931: (beginning-of-line)
932: (when (search-forward "\t" end t)
933: (message "Warning: line %i contains tab character #8" line)
934: (ding t)))))
935:
936: (defun forth-convert-from-block (from to)
937: "Convert block file format to stream source in current buffer."
938: (let ((line (count-lines (point-min) from)))
939: (save-excursion
940: (goto-char from)
941: (set-mark to)
942: (while (< (+ (point) forth-c/l) (mark t))
943: (setq line (1+ line))
944: (forth-check-block-line line)
945: (forward-char forth-c/l)
946: (forth-newline-remove-trailing))
947: (when (= (+ (point) forth-c/l) (mark t))
948: (forth-remove-trailing))
949: (mark t))))
950:
951: ;; Pad a line of a block file up to `forth-c/l' characters, positioning `point'
952: ;; at the end of line.
953: (defun forth-pad-block-line ()
954: (save-excursion
955: (end-of-line)
956: (if (<= (current-column) forth-c/l)
957: (move-to-column forth-c/l t)
958: (message "Line %i longer than %i characters, truncated"
959: (count-lines (point-min) (point)) forth-c/l)
960: (ding t)
961: (move-to-column forth-c/l t)
962: (delete-region (point) (progn (end-of-line) (point))))))
963:
964: ;; Replace tab characters in current line by spaces.
965: (defun forth-convert-tabs-in-line ()
966: (save-excursion
967: (beginning-of-line)
968: (while (search-forward "\t" (save-excursion (end-of-line) (point)) t)
969: (backward-char)
970: (delete-region (point) (1+ (point)))
971: (insert-char ?\ (- tab-width (% (current-column) tab-width))))))
972:
973: ;; Delete newline at end of current line, concatenating it with the following
974: ;; line. Place `point' at end of newly formed line.
975: (defun forth-delete-newline ()
976: (end-of-line)
977: (delete-region (point) (progn (beginning-of-line 2) (point))))
978:
979: (defun forth-convert-to-block (from to &optional original-buffer)
980: "Convert range of text to block file format in current buffer."
981: (let* ((lines 0)) ; I have to count lines myself, since `count-lines' has
982: ; problems with trailing newlines...
983: (save-excursion
984: (goto-char from)
985: (set-mark to)
986: ;; pad lines to full length (`forth-c/l' characters per line)
987: (while (< (save-excursion (end-of-line) (point)) (mark t))
988: (setq lines (1+ lines))
989: (forth-pad-block-line)
990: (forth-convert-tabs-in-line)
991: (forward-line))
992: ;; also make sure the last line is padded, if `to' is at its end
993: (end-of-line)
994: (when (= (point) (mark t))
995: (setq lines (1+ lines))
996: (forth-pad-block-line)
997: (forth-convert-tabs-in-line))
998: ;; remove newlines between lines
999: (goto-char from)
1000: (while (< (save-excursion (end-of-line) (point)) (mark t))
1001: (forth-delete-newline))
1002: ;; append empty lines, until last block is complete
1003: (goto-char (mark t))
1004: (let* ((required (* (/ (+ lines (1- forth-l/b)) forth-l/b) forth-l/b))
1005: (pad-lines (- required lines)))
1006: (while (> pad-lines 0)
1007: (insert-char ?\ forth-c/l)
1008: (setq pad-lines (1- pad-lines))))
1009: (point))))
1010:
1011: (defun forth-detect-block-file-p ()
1012: "Return non-nil if the current buffer is in block file format. Detection is
1013: done by checking whether the first line has 1024 characters or more."
1014: (save-restriction
1015: (widen)
1016: (save-excursion
1017: (goto-char (point-min))
1018: (end-of-line)
1019: (>= (current-column) 1024))))
1020:
1021: ;; add block file conversion routines to `format-alist'
1022: (defconst forth-block-format-description
1023: '(forth-blocks "Forth block source file" nil
1024: forth-convert-from-block forth-convert-to-block
1025: t normal-mode))
1026: (unless (memq forth-block-format-description format-alist)
1027: (setq format-alist (cons forth-block-format-description format-alist)))
1028:
1029: ;;; End block file encoding/decoding
1030:
1031: ;;; Block file editing
1032: ;;;
1033: (defvar forth-overlay-arrow-string ">>")
1034: (defvar forth-block-base 1 "Number of first block in block file")
1035: (defvar forth-show-screen nil
1036: "Non-nil means to show screen starts and numbers (for block files)")
1037: (defvar forth-warn-long-lines nil
1038: "Non-nil means to warn about lines that are longer than 64 characters")
1039:
1040: (defvar forth-screen-marker nil)
1041: (defvar forth-screen-number-string nil)
1042:
1043: (defun forth-update-show-screen ()
1044: "If `forth-show-screen' is non-nil, put overlay arrow to start of screen,
1045: `point' is in. If arrow now points to different screen than before, display
1046: screen number."
1047: (if (not forth-show-screen)
1048: (setq overlay-arrow-string nil)
1049: (save-excursion
1050: (let* ((line (count-lines (point-min) (min (point-max) (1+ (point)))))
1051: (first-line (1+ (* (/ (1- line) forth-l/b) forth-l/b)))
1052: (scr (+ forth-block-base (/ first-line forth-l/b))))
1053: (setq overlay-arrow-string forth-overlay-arrow-string)
1054: (goto-line first-line)
1055: (setq overlay-arrow-position forth-screen-marker)
1056: (set-marker forth-screen-marker
1057: (save-excursion (goto-line first-line) (point)))
1058: (setq forth-screen-number-string (format "%d" scr))))))
1059:
1060: (add-hook 'forth-motion-hooks 'forth-update-show-screen)
1061:
1062: (defun forth-update-warn-long-lines ()
1063: "If `forth-warn-long-lines' is non-nil, display a warning whenever a line
1064: exceeds 64 characters."
1065: (when forth-warn-long-lines
1066: (when (> (save-excursion (end-of-line) (current-column)) forth-c/l)
1067: (message "Warning: current line exceeds %i characters"
1068: forth-c/l))))
1069:
1070: (add-hook 'forth-motion-hooks 'forth-update-warn-long-lines)
1071:
1072: ;;; End block file editing
1073:
1074:
1075: (defvar forth-mode-abbrev-table nil
1076: "Abbrev table in use in Forth-mode buffers.")
1077:
1078: (define-abbrev-table 'forth-mode-abbrev-table ())
1079:
1080: (defvar forth-mode-map nil
1081: "Keymap used in Forth mode.")
1082:
1083: (if (not forth-mode-map)
1084: (setq forth-mode-map (make-sparse-keymap)))
1085:
1086: ;(define-key forth-mode-map "\M-\C-x" 'compile)
1087: (define-key forth-mode-map "\C-x\\" 'comment-region)
1088: (define-key forth-mode-map "\C-x~" 'forth-remove-tracers)
1089: (define-key forth-mode-map "\e\C-m" 'forth-send-paragraph)
1090: (define-key forth-mode-map "\eo" 'forth-send-buffer)
1091: (define-key forth-mode-map "\C-x\C-m" 'forth-split)
1092: (define-key forth-mode-map "\e " 'forth-reload)
1093: (define-key forth-mode-map "\t" 'forth-indent-command)
1094: (define-key forth-mode-map "\C-m" 'forth-reindent-then-newline-and-indent)
1095: (define-key forth-mode-map "\M-q" 'forth-fill-paragraph)
1096: (define-key forth-mode-map "\e." 'forth-find-tag)
1097:
1098: ;; setup for C-h C-i to work
1099: (eval-and-compile (forth-require 'info-look))
1100: (when (memq 'info-look features)
1101: (defvar forth-info-lookup '(symbol (forth-mode "\\S-+" t
1102: (("(gforth)Word Index"))
1103: "\\S-+")))
1104: (unless (memq forth-info-lookup info-lookup-alist)
1105: (setq info-lookup-alist (cons forth-info-lookup info-lookup-alist)))
1106: ;; in X-Emacs C-h C-i is by default bound to Info-query
1107: (define-key forth-mode-map "\C-h\C-i" 'info-lookup-symbol))
1108:
1109:
1110: ;; (info-lookup-add-help
1111: ;; :topic 'symbol
1112: ;; :mode 'forth-mode
1113: ;; :regexp "[^
1114: ;; ]+"
1115: ;; :ignore-case t
1116: ;; :doc-spec '(("(gforth)Name Index" nil "`" "' "))))
1117:
1118: (require 'etags)
1119:
1120: (defun forth-find-tag (tagname &optional next-p regexp-p)
1121: (interactive (find-tag-interactive "Find tag: "))
1122: (unless (or regexp-p next-p)
1123: (setq tagname (concat "\\(^\\|\\s-\\)\\(" (regexp-quote tagname)
1124: "\\)\\(\\s-\\|$\\)")))
1125: (switch-to-buffer
1126: (find-tag-noselect tagname next-p t)))
1127:
1128: (defvar forth-mode-syntax-table nil
1129: "Syntax table in use in Forth-mode buffers.")
1130:
1131: ;; Important: hilighting/indentation now depends on a correct syntax table.
1132: ;; All characters, except whitespace *must* belong to the "word constituent"
1133: ;; syntax class. If different behaviour is required, use of Categories might
1134: ;; help.
1135: (if (not forth-mode-syntax-table)
1136: (progn
1137: (setq forth-mode-syntax-table (make-syntax-table))
1138: (let ((char 0))
1139: (while (< char ?!)
1140: (modify-syntax-entry char " " forth-mode-syntax-table)
1141: (setq char (1+ char)))
1142: (while (< char 256)
1143: (modify-syntax-entry char "w" forth-mode-syntax-table)
1144: (setq char (1+ char))))
1145: ))
1146:
1147: (defun forth-mode-variables ()
1148: (set-syntax-table forth-mode-syntax-table)
1149: (setq local-abbrev-table forth-mode-abbrev-table)
1150: (make-local-variable 'paragraph-start)
1151: (setq paragraph-start (concat "^$\\|" page-delimiter))
1152: (make-local-variable 'paragraph-separate)
1153: (setq paragraph-separate paragraph-start)
1154: (make-local-variable 'indent-line-function)
1155: (setq indent-line-function 'forth-indent-line)
1156: ; (make-local-variable 'require-final-newline)
1157: ; (setq require-final-newline t)
1158: (make-local-variable 'comment-start)
1159: (setq comment-start "\\ ")
1160: ;(make-local-variable 'comment-end)
1161: ;(setq comment-end " )")
1162: (make-local-variable 'comment-column)
1163: (setq comment-column 40)
1164: (make-local-variable 'comment-start-skip)
1165: (setq comment-start-skip "\\\\ ")
1166: (make-local-variable 'comment-indent-function)
1167: (setq comment-indent-function 'forth-comment-indent)
1168: (make-local-variable 'parse-sexp-ignore-comments)
1169: (setq parse-sexp-ignore-comments t)
1170: (setq case-fold-search t)
1171: (make-local-variable 'forth-was-point)
1172: (setq forth-was-point -1)
1173: (make-local-variable 'forth-words)
1174: (make-local-variable 'forth-compiled-words)
1175: (make-local-variable 'forth-compiled-indent-words)
1176: (make-local-variable 'forth-hilight-level)
1177: (make-local-variable 'after-change-functions)
1178: (make-local-variable 'forth-show-screen)
1179: (make-local-variable 'forth-screen-marker)
1180: (make-local-variable 'forth-warn-long-lines)
1181: (make-local-variable 'forth-screen-number-string)
1182: (make-local-variable 'forth-use-oof)
1183: (make-local-variable 'forth-use-objects)
1184: (setq forth-screen-marker (copy-marker 0))
1185: (add-hook 'after-change-functions 'forth-change-function)
1186: (if (and forth-jit-parser (>= emacs-major-version 21))
1187: (add-hook 'fontification-functions 'forth-fontification-function))
1188: (setq imenu-create-index-function 'forth-create-index))
1189:
1190: ;;;###autoload
1191: (defun forth-mode ()
1192: "
1193: Major mode for editing Forth code. Tab indents for Forth code. Comments
1194: are delimited with \\ and newline. Paragraphs are separated by blank lines
1195: only. Block files are autodetected, when read, and converted to normal
1196: stream source format. See also `forth-block-mode'.
1197: \\{forth-mode-map}
1198: Forth-split
1199: Positions the current buffer on top and a forth-interaction window
1200: below. The window size is controlled by the forth-percent-height
1201: variable (see below).
1202: Forth-reload
1203: Reloads the forth library and restarts the forth process.
1204: Forth-send-buffer
1205: Sends the current buffer, in text representation, as input to the
1206: forth process.
1207: Forth-send-paragraph
1208: Sends the previous or the current paragraph to the forth-process.
1209: Note that the cursor only need to be with in the paragraph to be sent.
1210: forth-documentation
1211: Search for documentation of forward adjacent to cursor. Note! To use
1212: this mode you have to add a line, to your .emacs file, defining the
1213: directories to search through for documentation files (se variable
1214: forth-help-load-path below) e.g. (setq forth-help-load-path '(nil)).
1215:
1216: Variables controlling interaction and startup
1217: forth-percent-height
1218: Tells split how high to make the edit portion, in percent of the
1219: current screen height.
1220: forth-program-name
1221: Tells the library which program name to execute in the interation
1222: window.
1223:
1224: Variables controlling syntax hilighting/recognition of parsed text:
1225: `forth-words'
1226: List of words that have a special parsing behaviour and/or should be
1227: hilighted. Add custom words by setting forth-custom-words in your
1228: .emacs, or by setting forth-local-words, in source-files' local
1229: variables lists.
1230: forth-use-objects
1231: Set this variable to non-nil in your .emacs, or in a local variables
1232: list, to hilight and recognize the words from the \"Objects\" package
1233: for object-oriented programming.
1234: forth-use-oof
1235: Same as above, just for the \"OOF\" package.
1236: forth-custom-words
1237: List of custom Forth words to prepend to `forth-words'. Should be set
1238: in your .emacs.
1239: forth-local-words
1240: List of words to prepend to `forth-words', whenever a forth-mode
1241: buffer is created. That variable should be set by Forth sources, using
1242: a local variables list at the end of file, to get file-specific
1243: hilighting.
1244: 0 [IF]
1245: Local Variables: ...
1246: forth-local-words: ...
1247: End:
1248: [THEN]
1249: forth-hilight-level
1250: Controls how much syntax hilighting is done. Should be in the range
1251: 0..3
1252:
1253: Variables controlling indentation style:
1254: `forth-indent-words'
1255: List of words that influence indentation.
1256: forth-local-indent-words
1257: List of words to prepend to `forth-indent-words', similar to
1258: forth-local-words. Should be used for specifying file-specific
1259: indentation, using a local variables list.
1260: forth-custom-indent-words
1261: List of words to prepend to `forth-indent-words'. Should be set in your
1262: .emacs.
1263: forth-indent-level
1264: Indentation increment/decrement of Forth statements.
1265: forth-minor-indent-level
1266: Minor indentation increment/decrement of Forth statemens.
1267:
1268: Variables controlling block-file editing:
1269: forth-show-screen
1270: Non-nil means, that the start of the current screen is marked by an
1271: overlay arrow, and screen numbers are displayed in the mode line.
1272: This variable is by default nil for `forth-mode' and t for
1273: `forth-block-mode'.
1274: forth-overlay-arrow-string
1275: String to display as the overlay arrow, when `forth-show-screen' is t.
1276: Setting this variable to nil disables the overlay arrow.
1277: forth-block-base
1278: Screen number of the first block in a block file. Defaults to 1.
1279: forth-warn-long-lines
1280: Non-nil means that a warning message is displayed whenever you edit or
1281: move over a line that is longer than 64 characters (the maximum line
1282: length that can be stored into a block file). This variable defaults to
1283: t for `forth-block-mode' and to nil for `forth-mode'.
1284:
1285: Variables controling documentation search
1286: forth-help-load-path
1287: List of directories to search through to find *.doc
1288: (forth-help-file-suffix) files. Nil means current default directory.
1289: The specified directories must contain at least one .doc file. If it
1290: does not and you still want the load-path to scan that directory, create
1291: an empty file dummy.doc.
1292: forth-help-file-suffix
1293: The file names to search for in each directory specified by
1294: forth-help-load-path. Defaulted to '*.doc'.
1295: "
1296: (interactive)
1297: (kill-all-local-variables)
1298: (use-local-map forth-mode-map)
1299: (setq mode-name "Forth")
1300: (setq major-mode 'forth-mode)
1301: (forth-install-motion-hook)
1302: ;; convert buffer contents from block file format, if necessary
1303: (when (forth-detect-block-file-p)
1304: (widen)
1305: (message "Converting from Forth block source...")
1306: (forth-convert-from-block (point-min) (point-max))
1307: (message "Converting from Forth block source...done"))
1308: ;; if user switched from forth-block-mode to forth-mode, make sure the file
1309: ;; is now stored as normal strem source
1310: (when (equal buffer-file-format '(forth-blocks))
1311: (setq buffer-file-format nil))
1312: (forth-mode-variables)
1313: ; (if (not (forth-process-running-p))
1314: ; (run-forth forth-program-name))
1315: (run-hooks 'forth-mode-hook))
1316:
1317: ;;;###autoload
1318: (define-derived-mode forth-block-mode forth-mode "Forth Block Source"
1319: "Major mode for editing Forth block source files, derived from
1320: `forth-mode'. Differences to `forth-mode' are:
1321: * files are converted to block format, when written (`buffer-file-format'
1322: is set to `(forth-blocks)')
1323: * `forth-show-screen' and `forth-warn-long-lines' are t by default
1324:
1325: Note that the length of lines in block files is limited to 64 characters.
1326: When writing longer lines to a block file, a warning is displayed in the
1327: echo area and the line is truncated.
1328:
1329: Another problem is imposed by block files that contain newline or tab
1330: characters. When Emacs converts such files back to block file format,
1331: it'll translate those characters to a number of spaces. However, when
1332: you read such a file, a warning message is displayed in the echo area,
1333: including a line number that may help you to locate and fix the problem.
1334:
1335: So have a look at the *Messages* buffer, whenever you hear (or see) Emacs'
1336: bell during block file read/write operations."
1337: (setq buffer-file-format '(forth-blocks))
1338: (setq forth-show-screen t)
1339: (setq forth-warn-long-lines t)
1340: (setq forth-screen-number-string (format "%d" forth-block-base))
1341: (setq mode-line-format (append (reverse (cdr (reverse mode-line-format)))
1342: '("--S" forth-screen-number-string "-%-"))))
1343:
1344: (add-hook 'forth-mode-hook
1345: '(lambda ()
1346: (make-local-variable 'compile-command)
1347: (setq compile-command "gforth ")
1348: (forth-hack-local-variables)
1349: (forth-customize-words)
1350: (forth-compile-words)
1351: (unless (and forth-jit-parser (>= emacs-major-version 21))
1352: (forth-change-function (point-min) (point-max) nil t))))
1353:
1354: (defun forth-fill-paragraph ()
1355: "Fill comments (starting with '\'; do not fill code (block style
1356: programmers who tend to fill code won't use emacs anyway:-)."
1357: ; Currently only comments at the start of the line are filled.
1358: ; Something like lisp-fill-paragraph may be better. We cannot use
1359: ; fill-paragraph, because it removes the \ from the first comment
1360: ; line. Therefore we have to look for the first line of the comment
1361: ; and use fill-region.
1362: (interactive)
1363: (save-excursion
1364: (beginning-of-line)
1365: (while (and
1366: (= (forward-line -1) 0)
1367: (looking-at "[ \t]*\\\\g?[ \t]+")))
1368: (if (not (looking-at "[ \t]*\\\\g?[ \t]+"))
1369: (forward-line 1))
1370: (let ((from (point))
1371: (to (save-excursion (forward-paragraph) (point))))
1372: (if (looking-at "[ \t]*\\\\g?[ \t]+")
1373: (progn (goto-char (match-end 0))
1374: (set-fill-prefix)
1375: (fill-region from to nil))))))
1376:
1377: (defun forth-comment-indent ()
1378: (save-excursion
1379: (beginning-of-line)
1380: (if (looking-at ":[ \t]*")
1381: (progn
1382: (end-of-line)
1383: (skip-chars-backward " \t\n")
1384: (1+ (current-column)))
1385: comment-column)))
1386:
1387:
1388: ;; Forth commands
1389:
1390: (defun forth-remove-tracers ()
1391: "Remove tracers of the form `~~ '. Queries the user for each occurrence."
1392: (interactive)
1393: (query-replace-regexp "\\(~~ \\| ~~$\\)" "" nil))
1394:
1395: (defvar forth-program-name "gforth"
1396: "*Program invoked by the `run-forth' command.")
1397:
1398: (defvar forth-band-name nil
1399: "*Band loaded by the `run-forth' command.")
1400:
1401: (defvar forth-program-arguments nil
1402: "*Arguments passed to the Forth program by the `run-forth' command.")
1403:
1404: (defun run-forth (command-line)
1405: "Run an inferior Forth process. Output goes to the buffer `*forth*'.
1406: With argument, asks for a command line. Split up screen and run forth
1407: in the lower portion. The current-buffer when called will stay in the
1408: upper portion of the screen, and all other windows are deleted.
1409: Call run-forth again to make the *forth* buffer appear in the lower
1410: part of the screen."
1411: (interactive
1412: (list (let ((default
1413: (or forth-process-command-line
1414: (forth-default-command-line))))
1415: (if current-prefix-arg
1416: (read-string "Run Forth: " default)
1417: default))))
1418: (setq forth-process-command-line command-line)
1419: (forth-start-process command-line)
1420: (forth-split)
1421: (forth-set-runlight forth-runlight:input))
1422:
1423: (defun run-forth-if-not ()
1424: (if (not (forth-process-running-p))
1425: (run-forth forth-program-name)))
1426:
1427: (defun reset-forth ()
1428: "Reset the Forth process."
1429: (interactive)
1430: (let ((process (get-process forth-program-name)))
1431: (cond ((or (not process)
1432: (not (eq (process-status process) 'run))
1433: (yes-or-no-p
1434: "The Forth process is running, are you SURE you want to reset it? "))
1435: (message "Resetting Forth process...")
1436: (forth-reload)
1437: (message "Resetting Forth process...done")))))
1438:
1439: (defun forth-default-command-line ()
1440: (concat forth-program-name
1441: (if forth-program-arguments
1442: (concat " " forth-program-arguments)
1443: "")))
1444:
1445: ;;;; Internal Variables
1446:
1447: (defvar forth-process-command-line nil
1448: "Command used to start the most recent Forth process.")
1449:
1450: (defvar forth-previous-send ""
1451: "Most recent expression transmitted to the Forth process.")
1452:
1453: (defvar forth-process-filter-queue '()
1454: "Queue used to synchronize filter actions properly.")
1455:
1456: (defvar forth-prompt "ok"
1457: "The current forth prompt string.")
1458:
1459: (defvar forth-start-hook nil
1460: "If non-nil, a procedure to call when the Forth process is started.
1461: When called, the current buffer will be the Forth process-buffer.")
1462:
1463: (defvar forth-signal-death-message nil
1464: "If non-nil, causes a message to be generated when the Forth process dies.")
1465:
1466: (defvar forth-percent-height 50
1467: "Tells run-forth how high the upper window should be in percent.")
1468:
1469: (defconst forth-runlight:input ?I
1470: "The character displayed when the Forth process is waiting for input.")
1471:
1472: (defvar forth-mode-string ""
1473: "String displayed in the mode line when the Forth process is running.")
1474:
1475: ;;;; Evaluation Commands
1476:
1477: (defun forth-send-string (&rest strings)
1478: "Send the string arguments to the Forth process.
1479: The strings are concatenated and terminated by a newline."
1480: (cond ((forth-process-running-p)
1481: (forth-send-string-1 strings))
1482: ((yes-or-no-p "The Forth process has died. Reset it? ")
1483: (reset-forth)
1484: (goto-char (point-max))
1485: (forth-send-string-1 strings))))
1486:
1487: (defun forth-send-string-1 (strings)
1488: (let ((string (apply 'concat strings)))
1489: (forth-send-string-2 string)))
1490:
1491: (defun forth-send-string-2 (string)
1492: (let ((process (get-process forth-program-name)))
1493: (if (not (eq (current-buffer) (get-buffer forth-program-name)))
1494: (progn
1495: (forth-process-filter-output string)
1496: (forth-process-filter:finish)))
1497: (send-string process (concat string "\n"))
1498: (if (eq (current-buffer) (process-buffer process))
1499: (set-marker (process-mark process) (point)))))
1500:
1501:
1502: (defun forth-send-region (start end)
1503: "Send the current region to the Forth process.
1504: The region is sent terminated by a newline."
1505: (interactive "r")
1506: (let ((process (get-process forth-program-name)))
1507: (if (and process (eq (current-buffer) (process-buffer process)))
1508: (progn (goto-char end)
1509: (set-marker (process-mark process) end))))
1510: (forth-send-string "\n" (buffer-substring start end) "\n"))
1511:
1512: (defun forth-end-of-paragraph ()
1513: (if (looking-at "[\t\n ]+") (skip-chars-backward "\t\n "))
1514: (if (not (re-search-forward "\n[ \t]*\n" nil t))
1515: (goto-char (point-max))))
1516:
1517: (defun forth-send-paragraph ()
1518: "Send the current or the previous paragraph to the Forth process"
1519: (interactive)
1520: (let (end)
1521: (save-excursion
1522: (forth-end-of-paragraph)
1523: (skip-chars-backward "\t\n ")
1524: (setq end (point))
1525: (if (re-search-backward "\n[ \t]*\n" nil t)
1526: (setq start (point))
1527: (goto-char (point-min)))
1528: (skip-chars-forward "\t\n ")
1529: (forth-send-region (point) end))))
1530:
1531: (defun forth-send-buffer ()
1532: "Send the current buffer to the Forth process."
1533: (interactive)
1534: (if (eq (current-buffer) (forth-process-buffer))
1535: (error "Not allowed to send this buffer's contents to Forth"))
1536: (forth-send-region (point-min) (point-max)))
1537:
1538:
1539: ;;;; Basic Process Control
1540:
1541: (defun forth-start-process (command-line)
1542: (let ((buffer (get-buffer-create "*forth*")))
1543: (let ((process (get-buffer-process buffer)))
1544: (save-excursion
1545: (set-buffer buffer)
1546: (progn (if process (delete-process process))
1547: (goto-char (point-max))
1548: (setq mode-line-process '(": %s"))
1549: (add-to-global-mode-string 'forth-mode-string)
1550: (setq process
1551: (apply 'start-process
1552: (cons forth-program-name
1553: (cons buffer
1554: (forth-parse-command-line
1555: command-line)))))
1556: (set-marker (process-mark process) (point-max))
1557: (forth-process-filter-initialize t)
1558: (forth-modeline-initialize)
1559: (set-process-sentinel process 'forth-process-sentinel)
1560: (set-process-filter process 'forth-process-filter)
1561: (run-hooks 'forth-start-hook)))
1562: buffer)))
1563:
1564: (defun forth-parse-command-line (string)
1565: (setq string (substitute-in-file-name string))
1566: (let ((start 0)
1567: (result '()))
1568: (while start
1569: (let ((index (string-match "[ \t]" string start)))
1570: (setq start
1571: (cond ((not index)
1572: (setq result
1573: (cons (substring string start)
1574: result))
1575: nil)
1576: ((= index start)
1577: (string-match "[^ \t]" string start))
1578: (t
1579: (setq result
1580: (cons (substring string start index)
1581: result))
1582: (1+ index))))))
1583: (nreverse result)))
1584:
1585:
1586: (defun forth-process-running-p ()
1587: "True iff there is a Forth process whose status is `run'."
1588: (let ((process (get-process forth-program-name)))
1589: (and process
1590: (eq (process-status process) 'run))))
1591:
1592: (defun forth-process-buffer ()
1593: (let ((process (get-process forth-program-name)))
1594: (and process (process-buffer process))))
1595:
1596: ;;;; Process Filter
1597:
1598: (defun forth-process-sentinel (proc reason)
1599: (let ((inhibit-quit nil))
1600: (forth-process-filter-initialize (eq reason 'run))
1601: (if (eq reason 'run)
1602: (forth-modeline-initialize)
1603: (setq forth-mode-string "")))
1604: (if (and (not (memq reason '(run stop)))
1605: forth-signal-death-message)
1606: (progn (beep)
1607: (message
1608: "The Forth process has died! Do M-x reset-forth to restart it"))))
1609:
1610: (defun forth-process-filter-initialize (running-p)
1611: (setq forth-process-filter-queue (cons '() '()))
1612: (setq forth-prompt "ok"))
1613:
1614:
1615: (defun forth-process-filter (proc string)
1616: (forth-process-filter-output string)
1617: (forth-process-filter:finish))
1618:
1619: (defun forth-process-filter:enqueue (action)
1620: (let ((next (cons action '())))
1621: (if (cdr forth-process-filter-queue)
1622: (setcdr (cdr forth-process-filter-queue) next)
1623: (setcar forth-process-filter-queue next))
1624: (setcdr forth-process-filter-queue next)))
1625:
1626: (defun forth-process-filter:finish ()
1627: (while (car forth-process-filter-queue)
1628: (let ((next (car forth-process-filter-queue)))
1629: (setcar forth-process-filter-queue (cdr next))
1630: (if (not (cdr next))
1631: (setcdr forth-process-filter-queue '()))
1632: (apply (car (car next)) (cdr (car next))))))
1633:
1634: ;;;; Process Filter Output
1635:
1636: (defun forth-process-filter-output (&rest args)
1637: (if (not (and args
1638: (null (cdr args))
1639: (stringp (car args))
1640: (string-equal "" (car args))))
1641: (forth-process-filter:enqueue
1642: (cons 'forth-process-filter-output-1 args))))
1643:
1644: (defun forth-process-filter-output-1 (&rest args)
1645: (save-excursion
1646: (forth-goto-output-point)
1647: (apply 'insert-before-markers args)))
1648:
1649: (defun forth-guarantee-newlines (n)
1650: (save-excursion
1651: (forth-goto-output-point)
1652: (let ((stop nil))
1653: (while (and (not stop)
1654: (bolp))
1655: (setq n (1- n))
1656: (if (bobp)
1657: (setq stop t)
1658: (backward-char))))
1659: (forth-goto-output-point)
1660: (while (> n 0)
1661: (insert-before-markers ?\n)
1662: (setq n (1- n)))))
1663:
1664: (defun forth-goto-output-point ()
1665: (let ((process (get-process forth-program-name)))
1666: (set-buffer (process-buffer process))
1667: (goto-char (process-mark process))))
1668:
1669: (defun forth-modeline-initialize ()
1670: (setq forth-mode-string " "))
1671:
1672: (defun forth-set-runlight (runlight)
1673: (aset forth-mode-string 0 runlight)
1674: (forth-modeline-redisplay))
1675:
1676: (defun forth-modeline-redisplay ()
1677: (save-excursion (set-buffer (other-buffer)))
1678: (set-buffer-modified-p (buffer-modified-p))
1679: (sit-for 0))
1680:
1681: ;;;; Process Filter Operations
1682:
1683: (defun add-to-global-mode-string (x)
1684: (cond ((null global-mode-string)
1685: (setq global-mode-string (list "" x " ")))
1686: ((not (memq x global-mode-string))
1687: (setq global-mode-string
1688: (cons ""
1689: (cons x
1690: (cons " "
1691: (if (equal "" (car global-mode-string))
1692: (cdr global-mode-string)
1693: global-mode-string))))))))
1694:
1695:
1696: ;; Misc
1697:
1698: (setq auto-mode-alist (append auto-mode-alist
1699: '(("\\.fs$" . forth-mode))))
1700:
1701: (defun forth-split ()
1702: (interactive)
1703: (forth-split-1 "*forth*"))
1704:
1705: (defun forth-split-1 (buffer)
1706: (if (not (eq (window-buffer) (get-buffer buffer)))
1707: (progn
1708: (delete-other-windows)
1709: (split-window-vertically
1710: (/ (* (screen-height) forth-percent-height) 100))
1711: (other-window 1)
1712: (switch-to-buffer buffer)
1713: (goto-char (point-max))
1714: (other-window 1))))
1715:
1716: (defun forth-reload ()
1717: (interactive)
1718: (let ((process (get-process forth-program-name)))
1719: (if process (kill-process process t)))
1720: (sleep-for 0 100)
1721: (forth-mode))
1722:
1723:
1724: ;; Special section for forth-help
1725:
1726: (defvar forth-help-buffer "*Forth-help*"
1727: "Buffer used to display the requested documentation.")
1728:
1729: (defvar forth-help-load-path nil
1730: "List of directories to search through to find *.doc
1731: (forth-help-file-suffix) files. Nil means current default directory.
1732: The specified directories must contain at least one .doc file. If it
1733: does not and you still want the load-path to scan that directory, create
1734: an empty file dummy.doc.")
1735:
1736: (defvar forth-help-file-suffix "*.doc"
1737: "The file names to search for in each directory.")
1738:
1739: (setq forth-search-command-prefix "grep -n \"^ [^(]* ")
1740: (defvar forth-search-command-suffix "/dev/null")
1741: (defvar forth-grep-error-regexp ": No such file or directory")
1742:
1743: (defun forth-function-called-at-point ()
1744: "Return the space delimited word a point."
1745: (save-excursion
1746: (save-restriction
1747: (narrow-to-region (max (point-min) (- (point) 1000)) (point-max))
1748: (skip-chars-backward "^ \t\n" (point-min))
1749: (if (looking-at "[ \t\n]")
1750: (forward-char 1))
1751: (let (obj (p (point)))
1752: (skip-chars-forward "^ \t\n")
1753: (buffer-substring p (point))))))
1754:
1755: (defun forth-help-names-extend-comp (path-list result)
1756: (cond ((null path-list) result)
1757: ((null (car path-list))
1758: (forth-help-names-extend-comp (cdr path-list)
1759: (concat result forth-help-file-suffix " ")))
1760: (t (forth-help-names-extend-comp
1761: (cdr path-list) (concat result
1762: (expand-file-name (car path-list)) "/"
1763: forth-help-file-suffix " ")))))
1764:
1765: (defun forth-help-names-extended ()
1766: (if forth-help-load-path
1767: (forth-help-names-extend-comp forth-help-load-path "")
1768: (error "forth-help-load-path not specified")))
1769:
1770:
1771: ;(define-key forth-mode-map "\C-hf" 'forth-documentation)
1772:
1773: (defun forth-documentation (function)
1774: "Display the full documentation of FORTH word."
1775: (interactive
1776: (let ((fn (forth-function-called-at-point))
1777: (enable-recursive-minibuffers t)
1778: search-list
1779: val)
1780: (setq val (read-string (format "Describe forth word (default %s): " fn)))
1781: (list (if (equal val "") fn val))))
1782: (forth-get-doc (concat forth-search-command-prefix
1783: (grep-regexp-quote (concat function " ("))
1784: "[^)]*\-\-\" " (forth-help-names-extended)
1785: forth-search-command-suffix))
1786: (message "C-x C-m switches back to the forth interaction window"))
1787:
1788: (defun forth-get-doc (command)
1789: "Display the full documentation of command."
1790: (let ((curwin (get-buffer-window (window-buffer)))
1791: reswin
1792: pointmax)
1793: (with-output-to-temp-buffer forth-help-buffer
1794: (progn
1795: (call-process "sh" nil forth-help-buffer t "-c" command)
1796: (setq reswin (get-buffer-window forth-help-buffer))))
1797: (setq reswin (get-buffer-window forth-help-buffer))
1798: (select-window reswin)
1799: (save-excursion
1800: (goto-char (setq pointmax (point-max)))
1801: (insert "--------------------\n\n"))
1802: (let (fd doc)
1803: (while (setq fd (forth-get-file-data pointmax))
1804: (setq doc (forth-get-doc-string fd))
1805: (save-excursion
1806: (goto-char (point-max))
1807: (insert (substring (car fd) (string-match "[^/]*$" (car fd)))
1808: ":\n\n" doc "\n")))
1809: (if (not doc)
1810: (progn (goto-char (point-max)) (insert "Not found"))))
1811: (select-window curwin)))
1812:
1813: (defun forth-skip-error-lines ()
1814: (let ((lines 0))
1815: (save-excursion
1816: (while (re-search-forward forth-grep-error-regexp nil t)
1817: (beginning-of-line)
1818: (forward-line 1)
1819: (setq lines (1+ lines))))
1820: (forward-line lines)))
1821:
1822: (defun forth-get-doc-string (fd)
1823: "Find file (car fd) and extract documentation from line (nth 1 fd)."
1824: (let (result)
1825: (save-window-excursion
1826: (find-file (car fd))
1827: (goto-line (nth 1 fd))
1828: (if (not (eq (nth 1 fd) (1+ (count-lines (point-min) (point)))))
1829: (error "forth-get-doc-string: serious error"))
1830: (if (not (re-search-backward "\n[\t ]*\n" nil t))
1831: (goto-char (point-min))
1832: (goto-char (match-end 0)))
1833: (let ((p (point)))
1834: (if (not (re-search-forward "\n[\t ]*\n" nil t))
1835: (goto-char (point-max)))
1836: (setq result (buffer-substring p (point))))
1837: (bury-buffer (current-buffer)))
1838: result))
1839:
1840: (defun forth-get-file-data (limit)
1841: "Parse grep output and return '(filename line#) list. Return nil when
1842: passing limit."
1843: (forth-skip-error-lines)
1844: (if (< (point) limit)
1845: (let ((result (forth-get-file-data-cont limit)))
1846: (forward-line 1)
1847: (beginning-of-line)
1848: result)))
1849:
1850: (defun forth-get-file-data-cont (limit)
1851: (let (result)
1852: (let ((p (point)))
1853: (skip-chars-forward "^:")
1854: (setq result (buffer-substring p (point))))
1855: (if (< (point) limit)
1856: (let ((p (1+ (point))))
1857: (forward-char 1)
1858: (skip-chars-forward "^:")
1859: (list result (string-to-int (buffer-substring p (point))))))))
1860:
1861: (defun grep-regexp-quote (str)
1862: (let ((i 0) (m 1) (res ""))
1863: (while (/= m 0)
1864: (setq m (string-to-char (substring str i)))
1865: (if (/= m 0)
1866: (progn
1867: (setq i (1+ i))
1868: (if (string-match (regexp-quote (char-to-string m))
1869: ".*\\^$[]")
1870: (setq res (concat res "\\")))
1871: (setq res (concat res (char-to-string m))))))
1872: res))
1873:
1874:
1875: (define-key forth-mode-map "\C-x\C-e" 'compile)
1876: (define-key forth-mode-map "\C-x\C-n" 'next-error)
1877: (require 'compile)
1878:
1879: (defvar forth-compile-command "gforth ")
1880: ;(defvar forth-compilation-window-percent-height 30)
1881:
1882: (defun forth-compile (command)
1883: (interactive (list (setq forth-compile-command (read-string "Compile command: " forth-compile-command))))
1884: (forth-split-1 "*compilation*")
1885: (setq ctools-compile-command command)
1886: (compile1 ctools-compile-command "No more errors"))
1887:
1888:
1889: ;;; Forth menu
1890: ;;; Mikael Karlsson <qramika@eras70.ericsson.se>
1891:
1892: ;; (dk) code commented out due to complaints of XEmacs users. After
1893: ;; all, there's imenu/speedbar, which uses much smarter scanning
1894: ;; rules.
1895:
1896: ;; (cond ((string-match "XEmacs\\|Lucid" emacs-version)
1897: ;; (require 'func-menu)
1898:
1899: ;; (defconst fume-function-name-regexp-forth
1900: ;; "^\\(:\\)[ \t]+\\([^ \t]*\\)"
1901: ;; "Expression to get word definitions in Forth.")
1902:
1903: ;; (setq fume-function-name-regexp-alist
1904: ;; (append '((forth-mode . fume-function-name-regexp-forth)
1905: ;; ) fume-function-name-regexp-alist))
1906:
1907: ;; ;; Find next forth word in the buffer
1908: ;; (defun fume-find-next-forth-function-name (buffer)
1909: ;; "Searches for the next forth word in BUFFER."
1910: ;; (set-buffer buffer)
1911: ;; (if (re-search-forward fume-function-name-regexp nil t)
1912: ;; (let ((beg (match-beginning 2))
1913: ;; (end (match-end 2)))
1914: ;; (cons (buffer-substring beg end) beg))))
1915:
1916: ;; (setq fume-find-function-name-method-alist
1917: ;; (append '((forth-mode . fume-find-next-forth-function-name))))
1918:
1919: ;; ))
1920: ;;; End Forth menu
1921:
1922: ;;; File folding of forth-files
1923: ;;; uses outline
1924: ;;; Toggle activation with M-x fold-f (when editing a forth-file)
1925: ;;; Use f9 to expand, f10 to hide, Or the menubar in xemacs
1926: ;;;
1927: ;;; Works most of the times but loses sync with the cursor occasionally
1928: ;;; Could be improved by also folding on comments
1929:
1930: ;; (dk) This code needs a rewrite; just too ugly and doesn't use the
1931: ;; newer and smarter scanning rules of `imenu'. Who needs it anyway??
1932:
1933: ;; (require 'outline)
1934:
1935: ;; (defun f-outline-level ()
1936: ;; (cond ((looking-at "\\`\\\\")
1937: ;; 0)
1938: ;; ((looking-at "\\\\ SEC")
1939: ;; 0)
1940: ;; ((looking-at "\\\\ \\\\ .*")
1941: ;; 0)
1942: ;; ((looking-at "\\\\ DEFS")
1943: ;; 1)
1944: ;; ((looking-at "\\/\\* ")
1945: ;; 1)
1946: ;; ((looking-at ": .*")
1947: ;; 1)
1948: ;; ((looking-at "\\\\G")
1949: ;; 2)
1950: ;; ((looking-at "[ \t]+\\\\")
1951: ;; 3)))
1952:
1953: ;; (defun fold-f ()
1954: ;; (interactive)
1955: ;; (add-hook 'outline-minor-mode-hook 'hide-body)
1956:
1957: ;; ; outline mode header start, i.e. find word definitions
1958: ;; ;;; (setq outline-regexp "^\\(:\\)[ \t]+\\([^ \t]*\\)")
1959: ;; (setq outline-regexp "\\`\\\\\\|:\\|\\\\ SEC\\|\\\\G\\|[ \t]+\\\\\\|\\\\ DEFS\\|\\/\\*\\|\\\\ \\\\ .*")
1960: ;; (setq outline-level 'f-outline-level)
1961:
1962: ;; (outline-minor-mode)
1963: ;; (define-key outline-minor-mode-map '(shift up) 'hide-sublevels)
1964: ;; (define-key outline-minor-mode-map '(shift right) 'show-children)
1965: ;; (define-key outline-minor-mode-map '(shift left) 'hide-subtree)
1966: ;; (define-key outline-minor-mode-map '(shift down) 'show-subtree))
1967:
1968:
1969: ;;(define-key global-map '(shift up) 'fold-f)
1970:
1971: ;;; end file folding
1972:
1973: ;;; func-menu is a package that scans your source file for function definitions
1974: ;;; and makes a menubar entry that lets you jump to any particular function
1975: ;;; definition by selecting it from the menu. The following code turns this on
1976: ;;; for all of the recognized languages. Scanning the buffer takes some time,
1977: ;;; but not much.
1978: ;;;
1979: ;; (cond ((string-match "XEmacs\\|Lucid" emacs-version)
1980: ;; (require 'func-menu)
1981: ;; ;; (define-key global-map 'f8 'function-menu)
1982: ;; (add-hook 'find-fible-hooks 'fume-add-menubar-entry)
1983: ;; ; (define-key global-map "\C-cg" 'fume-prompt-function-goto)
1984: ;; ; (define-key global-map '(shift button3) 'mouse-function-menu)
1985: ;; ))
1986:
1987: (provide 'forth-mode)
1988:
1989: ;;; gforth.el ends here
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