1: ;;; gforth.el --- major mode for editing (G)Forth sources
2:
3: ;; Copyright (C) 1995,1996,1997,1998,2000,2001,2003 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: ;; Replaced forth-process code with comint-based implementation.
37:
38: ;; Tested with Emacs 19.34, 20.5, 21 and XEmacs 21
39:
40: ;;-------------------------------------------------------------------
41: ;; A Forth indentation, documentation search and interaction library
42: ;;-------------------------------------------------------------------
43: ;;
44: ;; Written by Goran Rydqvist, gorry@ida.liu.se, Summer 1988
45: ;; Started: 16 July 88
46: ;; Version: 2.10
47: ;; Last update: 5 December 1989 by Mikael Patel, mip@ida.liu.se
48: ;; Last update: 25 June 1990 by Goran Rydqvist, gorry@ida.liu.se
49: ;;
50: ;; Documentation: See forth-mode (^HF forth-mode)
51: ;;-------------------------------------------------------------------
52:
53: ;;; Code:
54:
55: ;(setq debug-on-error t)
56:
57: ;; Code ripped from `version.el' for compatability with Emacs versions
58: ;; prior to 19.23.
59: (if (not (boundp 'emacs-major-version))
60: (defconst emacs-major-version
61: (progn (string-match "^[0-9]+" emacs-version)
62: (string-to-int (match-string 0 emacs-version)))))
63:
64: (defun forth-emacs-older (major minor)
65: (or (< emacs-major-version major)
66: (and (= emacs-major-version major) (< emacs-minor-version minor))))
67:
68: ;; Code ripped from `subr.el' for compatability with Emacs versions
69: ;; prior to 20.1
70: (eval-when-compile
71: (if (forth-emacs-older 20 1)
72: (progn
73: (defmacro when (cond &rest body)
74: "If COND yields non-nil, do BODY, else return nil."
75: (list 'if cond (cons 'progn body)))
76: (defmacro unless (cond &rest body)
77: "If COND yields nil, do BODY, else return nil."
78: (cons 'if (cons cond (cons nil body)))))))
79:
80: ;; `no-error' argument of require not supported in Emacs versions
81: ;; prior to 20.4 :-(
82: (defun forth-require (feature)
83: (condition-case err (require feature) (error nil)))
84:
85: (require 'font-lock)
86:
87: ;; define `font-lock-warning-face' in emacs-versions prior to 20.1
88: ;; (ripped from `font-lock.el')
89: (unless (boundp 'font-lock-warning-face)
90: (message "defining font-lock-warning-face")
91: (make-face 'font-lock-warning-face)
92: (defvar font-lock-warning-face 'font-lock-warning-face)
93: (set-face-foreground font-lock-warning-face "red")
94: (make-face-bold font-lock-warning-face))
95:
96: ;; define `font-lock-constant-face' in XEmacs (just copy
97: ;; `font-lock-preprocessor-face')
98: (unless (boundp 'font-lock-constant-face)
99: (copy-face font-lock-preprocessor-face 'font-lock-constant-face))
100:
101:
102: ;; define `regexp-opt' in emacs versions prior to 20.1
103: ;; (this implementation is extremely inefficient, though)
104: (eval-and-compile (forth-require 'regexp-opt))
105: (unless (memq 'regexp-opt features)
106: (message (concat
107: "Warning: your Emacs version doesn't support `regexp-opt'. "
108: "Hilighting will be slow."))
109: (defun regexp-opt (STRINGS &optional PAREN)
110: (let ((open (if PAREN "\\(" "")) (close (if PAREN "\\)" "")))
111: (concat open (mapconcat 'regexp-quote STRINGS "\\|") close)))
112: (defun regexp-opt-depth (re)
113: (if (string= (substring re 0 2) "\\(") 1 0)))
114:
115: ; todo:
116: ;
117:
118: ; Wörter ordentlich hilighten, die nicht auf Whitespace beginnen ( ..)IF
119: ; -- mit aktueller Konzeption nicht möglich??
120: ;
121: ; Konfiguration über customization groups
122: ;
123: ; Bereich nur auf Wortanfang/ende ausweiten, wenn Anfang bzw Ende in einem
124: ; Wort liegen (?) -- speed!
125: ;
126: ; 'forth-word' property muss eindeutig sein!
127: ;
128: ; Forth-Menu
129: ;
130: ; Interface zu GForth Prozessen (Patches von Michael Scholz)
131: ;
132: ; Byte-compile-Code rausschmeißen, Compilieren im Makefile über Emacs
133: ; batch-Modus
134: ;
135: ; forth-help Kram rausschmeißen
136: ;
137: ; XEmacs Kompatibilität? imenu/speedbar -> fume?
138: ;
139: ; Folding neuschreiben (neue Parser-Informationen benutzen)
140:
141: ;;; Motion-hooking (dk)
142: ;;;
143: (defun forth-idle-function ()
144: "Function that is called when Emacs is idle to detect cursor motion
145: in forth-block-mode buffers (which is mainly used for screen number
146: display in). Currently ignores forth-mode buffers but that may change
147: in the future."
148: (if (eq major-mode 'forth-block-mode)
149: (forth-check-motion)))
150:
151: (defvar forth-idle-function-timer nil
152: "Timer that runs `forth-idle-function' or nil if no timer installed.")
153:
154: (defun forth-install-motion-hook ()
155: "Install the motion-hooking mechanism. Currently uses idle timers
156: but might be transparently changed in the future."
157: (unless forth-idle-function-timer
158: ;; install idle function only once (first time forth-mode is used)
159: (setq forth-idle-function-timer
160: (run-with-idle-timer .05 t 'forth-idle-function))))
161:
162: (defvar forth-was-point nil)
163:
164: (defun forth-check-motion ()
165: "Run `forth-motion-hooks', if `point' changed since last call. This
166: used to be called via `post-command-hook' but uses idle timers now as
167: users complaint about lagging performance."
168: (when (or (eq forth-was-point nil) (/= forth-was-point (point)))
169: (setq forth-was-point (point))
170: (run-hooks 'forth-motion-hooks)))
171:
172:
173: ;;; Hilighting and indentation engine (dk)
174: ;;;
175: (defvar forth-disable-parser nil
176: "*Non-nil means to disable on-the-fly parsing of Forth-code.
177:
178: This will disable hilighting of forth-mode buffers and will decrease
179: the smartness of the indentation engine. Only set it to non-nil, if
180: your computer is very slow. To disable hilighting, set
181: `forth-hilight-level' to zero.")
182:
183: (defvar forth-jit-parser nil
184: "*Non-nil means to parse Forth-code just-in-time.
185:
186: This eliminates the need for initially parsing forth-mode buffers and
187: thus speeds up loading of Forth files. That feature is only available
188: in Emacs21 (and newer versions).")
189:
190: (defvar forth-words nil
191: "List of words for hilighting and recognition of parsed text areas.
192:
193: Hilighting of object-oriented Forth code is achieved, by appending either
194: `forth-objects-words' or `forth-oof-words' to the list, depending on the values of `forth-use-objects' or `forth-use-oof'.
195:
196: After `forth-words' changed, `forth-compile-words' must be called to
197: make the changes take effect.
198:
199: Each item of `forth-words' has the form
200: (MATCHER TYPE HILIGHT . &optional PARSED-TEXT ...)
201:
202: MATCHER is either a list of strings to match, or a REGEXP.
203: If it's a REGEXP, it should not be surrounded by '\\<' or '\\>', since
204: that'll be done automatically by the search routines.
205:
206: TYPE should be one of 'definiton-starter', 'definition-ender', 'compile-only',
207: 'immediate' or 'non-immediate'. Those information are required to determine
208: whether a word actually parses (and whether that parsed text needs to be
209: hilighted).
210:
211: HILIGHT is a cons cell of the form (FACE . MINIMUM-LEVEL)
212: Where MINIMUM-LEVEL specifies the minimum value of `forth-hilight-level',
213: that's required for matching text to be hilighted.
214:
215: PARSED-TEXT specifies whether and how a word parses following text. You can
216: specify as many subsequent PARSED-TEXT as you wish, but that shouldn't be
217: necessary very often. It has the following form:
218: (DELIM-REGEXP SKIP-LEADING-FLAG PARSED-TYPE HILIGHT)
219:
220: DELIM-REGEXP is a regular expression that should match strings of length 1,
221: which are delimiters for the parsed text.
222:
223: A non-nil value for PARSE-LEADING-FLAG means, that leading delimiter strings
224: before parsed text should be skipped. This is the parsing behaviour of the
225: Forth word WORD. Set it to t for name-parsing words, nil for comments and
226: strings.
227:
228: PARSED-TYPE specifies what kind of text is parsed. It should be on of 'name',
229: 'string' or 'comment'.")
230: (setq forth-words
231: '(
232: (("[") definition-ender (font-lock-keyword-face . 1))
233: (("]" "]l") definition-starter (font-lock-keyword-face . 1))
234: ((":") definition-starter (font-lock-keyword-face . 1)
235: "[ \t\n]" t name (font-lock-function-name-face . 3))
236: (("immediate" "compile-only" "restrict")
237: immediate (font-lock-keyword-face . 1))
238: (("does>") compile-only (font-lock-keyword-face . 1))
239: ((":noname") definition-starter (font-lock-keyword-face . 1))
240: ((";" ";code") definition-ender (font-lock-keyword-face . 1))
241: (("include" "require" "needs" "use")
242: non-immediate (font-lock-keyword-face . 1)
243: "[\n\t ]" t string (font-lock-string-face . 1))
244: (("included" "required" "thru" "load")
245: non-immediate (font-lock-keyword-face . 1))
246: (("[char]") compile-only (font-lock-keyword-face . 1)
247: "[ \t\n]" t string (font-lock-string-face . 1))
248: (("char") non-immediate (font-lock-keyword-face . 1)
249: "[ \t\n]" t string (font-lock-string-face . 1))
250: (("s\"" "c\"") immediate (font-lock-string-face . 1)
251: "[\"\n]" nil string (font-lock-string-face . 1))
252: ((".\"") compile-only (font-lock-string-face . 1)
253: "[\"\n]" nil string (font-lock-string-face . 1))
254: (("abort\"") compile-only (font-lock-keyword-face . 1)
255: "[\"\n]" nil string (font-lock-string-face . 1))
256: (("{") compile-only (font-lock-variable-name-face . 1)
257: "[\n}]" nil name (font-lock-variable-name-face . 1))
258: ((".(" "(") immediate (font-lock-comment-face . 1)
259: ")" nil comment (font-lock-comment-face . 1))
260: (("\\" "\\G") immediate (font-lock-comment-face . 1)
261: "[\n]" nil comment (font-lock-comment-face . 1))
262:
263: (("[if]" "[?do]" "[do]" "[for]" "[begin]"
264: "[endif]" "[then]" "[loop]" "[+loop]" "[next]" "[until]" "[repeat]"
265: "[again]" "[while]" "[else]")
266: immediate (font-lock-keyword-face . 2))
267: (("[ifdef]" "[ifundef]") immediate (font-lock-keyword-face . 2)
268: "[ \t\n]" t name (font-lock-function-name-face . 3))
269: (("if" "begin" "ahead" "do" "?do" "+do" "u+do" "-do" "u-do" "for"
270: "case" "of" "?dup-if" "?dup-0=-if" "then" "endif" "until"
271: "repeat" "again" "leave" "?leave"
272: "loop" "+loop" "-loop" "next" "endcase" "endof" "else" "while" "try"
273: "recover" "endtry" "assert(" "assert0(" "assert1(" "assert2("
274: "assert3(" ")" "<interpretation" "<compilation" "interpretation>"
275: "compilation>")
276: compile-only (font-lock-keyword-face . 2))
277:
278: (("true" "false" "c/l" "bl" "cell" "pi" "w/o" "r/o" "r/w")
279: non-immediate (font-lock-constant-face . 2))
280: (("~~" "break:" "dbg") compile-only (font-lock-warning-face . 2))
281: (("break\"") compile-only (font-lock-warning-face . 1)
282: "[\"\n]" nil string (font-lock-string-face . 1))
283: (("postpone" "[is]" "defers" "[']" "[compile]")
284: compile-only (font-lock-keyword-face . 2)
285: "[ \t\n]" t name (font-lock-function-name-face . 3))
286: (("is" "what's") immediate (font-lock-keyword-face . 2)
287: "[ \t\n]" t name (font-lock-function-name-face . 3))
288: (("<is>" "'" "see") non-immediate (font-lock-keyword-face . 2)
289: "[ \t\n]" t name (font-lock-function-name-face . 3))
290: (("[to]") compile-only (font-lock-keyword-face . 2)
291: "[ \t\n]" t name (font-lock-variable-name-face . 3))
292: (("to") immediate (font-lock-keyword-face . 2)
293: "[ \t\n]" t name (font-lock-variable-name-face . 3))
294: (("<to>") non-immediate (font-lock-keyword-face . 2)
295: "[ \t\n]" t name (font-lock-variable-name-face . 3))
296:
297: (("create" "variable" "constant" "2variable" "2constant" "fvariable"
298: "fconstant" "value" "field" "user" "vocabulary"
299: "create-interpret/compile")
300: non-immediate (font-lock-type-face . 2)
301: "[ \t\n]" t name (font-lock-variable-name-face . 3))
302: ("\\S-+%" non-immediate (font-lock-type-face . 2))
303: (("defer" "alias" "create-interpret/compile:")
304: non-immediate (font-lock-type-face . 1)
305: "[ \t\n]" t name (font-lock-function-name-face . 3))
306: (("end-struct") non-immediate (font-lock-keyword-face . 2)
307: "[ \t\n]" t name (font-lock-type-face . 3))
308: (("struct") non-immediate (font-lock-keyword-face . 2))
309: ("-?[0-9]+\\(\\.[0-9]*e\\(-?[0-9]+\\)?\\|\\.?[0-9a-f]*\\)"
310: immediate (font-lock-constant-face . 3))
311: ))
312:
313: (defvar forth-use-objects nil
314: "*Non-nil makes forth-mode also hilight words from the \"Objects\" package.")
315: (defvar forth-objects-words
316: '(((":m") definition-starter (font-lock-keyword-face . 1)
317: "[ \t\n]" t name (font-lock-function-name-face . 3))
318: (("m:") definition-starter (font-lock-keyword-face . 1))
319: ((";m") definition-ender (font-lock-keyword-face . 1))
320: (("[current]" "[parent]") compile-only (font-lock-keyword-face . 1)
321: "[ \t\n]" t name (font-lock-function-name-face . 3))
322: (("current" "overrides") non-immediate (font-lock-keyword-face . 2)
323: "[ \t\n]" t name (font-lock-function-name-face . 3))
324: (("[to-inst]") compile-only (font-lock-keyword-face . 2)
325: "[ \t\n]" t name (font-lock-variable-name-face . 3))
326: (("[bind]") compile-only (font-lock-keyword-face . 2)
327: "[ \t\n]" t name (font-lock-type-face . 3)
328: "[ \t\n]" t name (font-lock-function-name-face . 3))
329: (("bind") non-immediate (font-lock-keyword-face . 2)
330: "[ \t\n]" t name (font-lock-type-face . 3)
331: "[ \t\n]" t name (font-lock-function-name-face . 3))
332: (("inst-var" "inst-value") non-immediate (font-lock-type-face . 2)
333: "[ \t\n]" t name (font-lock-variable-name-face . 3))
334: (("method" "selector")
335: non-immediate (font-lock-type-face . 1)
336: "[ \t\n]" t name (font-lock-function-name-face . 3))
337: (("end-class" "end-interface")
338: non-immediate (font-lock-keyword-face . 2)
339: "[ \t\n]" t name (font-lock-type-face . 3))
340: (("public" "protected" "class" "exitm" "implementation" "interface"
341: "methods" "end-methods" "this")
342: non-immediate (font-lock-keyword-face . 2))
343: (("object") non-immediate (font-lock-type-face . 2)))
344: "Hilighting description for words of the \"Objects\" package")
345:
346:
347: (defvar forth-use-oof nil
348: "*Non-nil makes forth-mode also hilight words from the \"OOF\" package.")
349: (defvar forth-oof-words
350: '((("class") non-immediate (font-lock-keyword-face . 2)
351: "[ \t\n]" t name (font-lock-type-face . 3))
352: (("var") non-immediate (font-lock-type-face . 2)
353: "[ \t\n]" t name (font-lock-variable-name-face . 3))
354: (("method" "early") non-immediate (font-lock-type-face . 2)
355: "[ \t\n]" t name (font-lock-function-name-face . 3))
356: (("::" "super" "bind" "bound" "link")
357: immediate (font-lock-keyword-face . 2)
358: "[ \t\n]" t name (font-lock-function-name-face . 3))
359: (("ptr" "asptr" "[]")
360: immediate (font-lock-keyword-face . 2)
361: "[ \t\n]" t name (font-lock-variable-name-face . 3))
362: (("class;" "how:" "self" "new" "new[]" "definitions" "class?" "with"
363: "endwith")
364: non-immediate (font-lock-keyword-face . 2))
365: (("object") non-immediate (font-lock-type-face . 2)))
366: "Hilighting description for words of the \"OOF\" package")
367:
368: (defvar forth-local-words nil
369: "List of Forth words to prepend to `forth-words'. Should be set by a
370: forth source, using a local variables list at the end of the file
371: (\"Local Variables: ... forth-local-words: ... End:\" construct).")
372:
373: (defvar forth-custom-words nil
374: "List of Forth words to prepend to `forth-words'. Should be set in your
375: .emacs.")
376:
377: (defvar forth-hilight-level 3 "*Level of hilighting of Forth code.")
378:
379: (defvar forth-compiled-words nil "Compiled representation of `forth-words'.")
380:
381: (defvar forth-indent-words nil
382: "List of words that have indentation behaviour.
383: Each element of `forth-indent-words' should have the form
384: (MATCHER INDENT1 INDENT2 &optional TYPE)
385:
386: MATCHER is either a list of strings to match, or a REGEXP.
387: If it's a REGEXP, it should not be surrounded by `\\<` or `\\>`, since
388: that'll be done automatically by the search routines.
389:
390: TYPE might be omitted. If it's specified, the only allowed value is
391: currently the symbol `non-immediate', meaning that the word will not
392: have any effect on indentation inside definitions. (:NONAME is a good
393: example for this kind of word).
394:
395: INDENT1 specifies how to indent a word that's located at the beginning
396: of a line, following any number of whitespaces.
397:
398: INDENT2 specifies how to indent words that are not located at the
399: beginning of a line.
400:
401: INDENT1 and INDENT2 are indentation specifications of the form
402: (SELF-INDENT . NEXT-INDENT), where SELF-INDENT is a numerical value,
403: specifying how the matching line and all following lines are to be
404: indented, relative to previous lines. NEXT-INDENT specifies how to indent
405: following lines, relative to the matching line.
406:
407: Even values of SELF-INDENT and NEXT-INDENT correspond to multiples of
408: `forth-indent-level'. Odd values get an additional
409: `forth-minor-indent-level' added/substracted. Eg a value of -2 indents
410: 1 * forth-indent-level to the left, wheras 3 indents
411: 1 * forth-indent-level + forth-minor-indent-level columns to the right.")
412:
413: (setq forth-indent-words
414: '((("if" "begin" "do" "?do" "+do" "-do" "u+do"
415: "u-do" "?dup-if" "?dup-0=-if" "case" "of" "try"
416: "[if]" "[ifdef]" "[ifundef]" "[begin]" "[for]" "[do]" "[?do]")
417: (0 . 2) (0 . 2))
418: ((":" ":noname" "code" "struct" "m:" ":m" "class" "interface")
419: (0 . 2) (0 . 2) non-immediate)
420: ("\\S-+%$" (0 . 2) (0 . 0) non-immediate)
421: ((";" ";m") (-2 . 0) (0 . -2))
422: (("again" "then" "endif" "endtry" "endcase" "endof"
423: "[then]" "[endif]" "[loop]" "[+loop]" "[next]"
424: "[until]" "[again]" "loop")
425: (-2 . 0) (0 . -2))
426: (("end-code" "end-class" "end-interface" "end-class-noname"
427: "end-interface-noname" "end-struct" "class;")
428: (-2 . 0) (0 . -2) non-immediate)
429: (("protected" "public" "how:") (-1 . 1) (0 . 0) non-immediate)
430: (("+loop" "-loop" "until") (-2 . 0) (-2 . 0))
431: (("else" "recover" "[else]") (-2 . 2) (0 . 0))
432: (("does>") (-1 . 1) (0 . 0))
433: (("while" "[while]") (-2 . 4) (0 . 2))
434: (("repeat" "[repeat]") (-4 . 0) (0 . -4))
435: (("\\g") (-2 . 2) (0 . 0))))
436:
437: (defvar forth-local-indent-words nil
438: "List of Forth words to prepend to `forth-indent-words', when a forth-mode
439: buffer is created. Should be set by a Forth source, using a local variables
440: list at the end of the file (\"Local Variables: ... forth-local-words: ...
441: End:\" construct).")
442:
443: (defvar forth-custom-indent-words nil
444: "List of Forth words to prepend to `forth-indent-words'. Should be set in
445: your .emacs.")
446:
447: (defvar forth-indent-level 4
448: "*Indentation of Forth statements.")
449: (defvar forth-minor-indent-level 2
450: "*Minor indentation of Forth statements.")
451: (defvar forth-compiled-indent-words nil)
452:
453: ;(setq debug-on-error t)
454:
455: ;; Filter list by predicate. This is a somewhat standard function for
456: ;; functional programming languages. So why isn't it already implemented
457: ;; in Lisp??
458: (defun forth-filter (predicate list)
459: (let ((filtered nil))
460: (mapcar (lambda (item)
461: (when (funcall predicate item)
462: (if filtered
463: (nconc filtered (list item))
464: (setq filtered (cons item nil))))
465: nil) list)
466: filtered))
467:
468: ;; Helper function for `forth-compile-word': return whether word has to be
469: ;; added to the compiled word list, for syntactic parsing and hilighting.
470: (defun forth-words-filter (word)
471: (let* ((hilight (nth 2 word))
472: (level (cdr hilight))
473: (parsing-flag (nth 3 word)))
474: (or parsing-flag
475: (<= level forth-hilight-level))))
476:
477: ;; Helper function for `forth-compile-word': translate one entry from
478: ;; `forth-words' into the form (regexp regexp-depth word-description)
479: (defun forth-compile-words-mapper (word)
480: ;; warning: we cannot rely on regexp-opt's PAREN argument, since
481: ;; XEmacs will use shy parens by default :-(
482: (let* ((matcher (car word))
483: (regexp
484: (concat "\\(" (cond ((stringp matcher) matcher)
485: ((listp matcher) (regexp-opt matcher))
486: (t (error "Invalid matcher `%s'")))
487: "\\)"))
488: (depth (regexp-opt-depth regexp))
489: (description (cdr word)))
490: (list regexp depth description)))
491:
492: ;; Read `words' and create a compiled representation suitable for efficient
493: ;; parsing of the form
494: ;; (regexp (subexp-count word-description) (subexp-count2 word-description2)
495: ;; ...)
496: (defun forth-compile-wordlist (words)
497: (let* ((mapped (mapcar 'forth-compile-words-mapper words))
498: (regexp (concat "\\<\\("
499: (mapconcat 'car mapped "\\|")
500: "\\)\\>"))
501: (sub-count 2)
502: (sub-list (mapcar
503: (lambda (i)
504: (let ((sub (cons sub-count (nth 2 i))))
505: (setq sub-count (+ sub-count (nth 1 i)))
506: sub
507: ))
508: mapped)))
509: (let ((result (cons regexp sub-list)))
510: (byte-compile 'result)
511: result)))
512:
513: (defun forth-compile-words ()
514: "Compile the the words from `forth-words' and `forth-indent-words' into
515: the format that's later used for doing the actual hilighting/indentation.
516: Store the resulting compiled wordlists in `forth-compiled-words' and
517: `forth-compiled-indent-words', respective"
518: (setq forth-compiled-words
519: (forth-compile-wordlist
520: (forth-filter 'forth-words-filter forth-words)))
521: (setq forth-compiled-indent-words
522: (forth-compile-wordlist forth-indent-words)))
523:
524: (defun forth-hack-local-variables ()
525: "Parse and bind local variables, set in the contents of the current
526: forth-mode buffer. Prepend `forth-local-words' to `forth-words' and
527: `forth-local-indent-words' to `forth-indent-words'."
528: (hack-local-variables)
529: (setq forth-words (append forth-local-words forth-words))
530: (setq forth-indent-words (append forth-local-indent-words
531: forth-indent-words)))
532:
533: (defun forth-customize-words ()
534: "Add the words from `forth-custom-words' and `forth-custom-indent-words'
535: to `forth-words' and `forth-indent-words', respective. Add
536: `forth-objects-words' and/or `forth-oof-words' to `forth-words', if
537: `forth-use-objects' and/or `forth-use-oof', respective is set."
538: (setq forth-words (append forth-custom-words forth-words
539: (if forth-use-oof forth-oof-words nil)
540: (if forth-use-objects forth-objects-words nil)))
541: (setq forth-indent-words (append
542: forth-custom-indent-words forth-indent-words)))
543:
544:
545:
546: ;; get location of first character of previous forth word that's got
547: ;; properties
548: (defun forth-previous-start (pos)
549: (let* ((word (get-text-property pos 'forth-word))
550: (prev (previous-single-property-change
551: (min (point-max) (1+ pos)) 'forth-word
552: (current-buffer) (point-min))))
553: (if (or (= (point-min) prev) word) prev
554: (if (get-text-property (1- prev) 'forth-word)
555: (previous-single-property-change
556: prev 'forth-word (current-buffer) (point-min))
557: (point-min)))))
558:
559: ;; Get location of the last character of the current/next forth word that's
560: ;; got properties, text that's parsed by the word is considered as parts of
561: ;; the word.
562: (defun forth-next-end (pos)
563: (let* ((word (get-text-property pos 'forth-word))
564: (next (next-single-property-change pos 'forth-word
565: (current-buffer) (point-max))))
566: (if word next
567: (if (get-text-property next 'forth-word)
568: (next-single-property-change
569: next 'forth-word (current-buffer) (point-max))
570: (point-max)))))
571:
572: (defun forth-next-whitespace (pos)
573: (save-excursion
574: (goto-char pos)
575: (skip-syntax-forward "-" (point-max))
576: (point)))
577: (defun forth-previous-word (pos)
578: (save-excursion
579: (goto-char pos)
580: (re-search-backward "\\<" pos (point-min) 1)
581: (point)))
582:
583: ;; Delete all properties, used by Forth mode, from `from' to `to'.
584: (defun forth-delete-properties (from to)
585: (remove-text-properties
586: from to '(face nil fontified nil
587: forth-parsed nil forth-word nil forth-state nil)))
588:
589: ;; Get the index of the branch of the most recently evaluated regular
590: ;; expression that matched. (used for identifying branches "a\\|b\\|c...")
591: (defun forth-get-regexp-branch ()
592: (let ((count 2))
593: (while (not (condition-case err (match-beginning count)
594: (args-out-of-range t))) ; XEmacs requires error handling
595: (setq count (1+ count)))
596: count))
597:
598: ;; seek to next forth-word and return its "word-description"
599: (defun forth-next-known-forth-word (to)
600: (if (<= (point) to)
601: (progn
602: (let* ((regexp (car forth-compiled-words))
603: (pos (re-search-forward regexp to t)))
604: (if pos (let ((branch (forth-get-regexp-branch))
605: (descr (cdr forth-compiled-words)))
606: (goto-char (match-beginning 0))
607: (cdr (assoc branch descr)))
608: 'nil)))
609: nil))
610:
611: ;; Set properties of forth word at `point', eventually parsing subsequent
612: ;; words, and parsing all whitespaces. Set point to delimiter after word.
613: ;; The word, including it's parsed text gets the `forth-word' property, whose
614: ;; value is unique, and may be used for getting the word's start/end
615: ;; positions.
616: (defun forth-set-word-properties (state data)
617: (let* ((start (point))
618: (end (progn (re-search-forward "[ \t]\\|$" (point-max) 1)
619: (point)))
620: (type (car data))
621: (hilight (nth 1 data))
622: (bad-word (and (not state) (eq type 'compile-only)))
623: (hlface (if bad-word font-lock-warning-face
624: (if (<= (cdr hilight) forth-hilight-level)
625: (car hilight) nil))))
626: (when hlface (put-text-property start end 'face hlface))
627: ;; if word parses in current state, process parsed range of text
628: (when (or (not state) (eq type 'compile-only) (eq type 'immediate))
629: (let ((parse-data (nthcdr 2 data)))
630: (while parse-data
631: (let ((delim (nth 0 parse-data))
632: (skip-leading (nth 1 parse-data))
633: (parse-type (nth 2 parse-data))
634: (parsed-hilight (nth 3 parse-data))
635: (parse-start (point))
636: (parse-end))
637: (when skip-leading
638: (while (and (looking-at delim) (> (match-end 0) (point))
639: (not (looking-at "\n")))
640: (forward-char)))
641: (re-search-forward delim (point-max) 1)
642: (setq parse-end (point))
643: (forth-delete-properties end parse-end)
644: (when (<= (cdr parsed-hilight) forth-hilight-level)
645: (put-text-property
646: parse-start parse-end 'face (car parsed-hilight)))
647: (put-text-property
648: parse-start parse-end 'forth-parsed parse-type)
649: (setq end parse-end)
650: (setq parse-data (nthcdr 4 parse-data))))))
651: (put-text-property start end 'forth-word start)))
652:
653: ;; Search for known Forth words in the range `from' to `to', using
654: ;; `forth-next-known-forth-word' and set their properties via
655: ;; `forth-set-word-properties'.
656: (defun forth-update-properties (from to &optional loudly)
657: (save-excursion
658: (let ((msg-count 0) (state) (word-descr) (last-location))
659: (goto-char (forth-previous-word (forth-previous-start
660: (max (point-min) (1- from)))))
661: (setq to (forth-next-end (min (point-max) (1+ to))))
662: ;; `to' must be on a space delimiter, if a parsing word was changed
663: (setq to (forth-next-whitespace to))
664: (setq state (get-text-property (point) 'forth-state))
665: (setq last-location (point))
666: (forth-delete-properties (point) to)
667: (put-text-property (point) to 'fontified t)
668: ;; hilight loop...
669: (while (setq word-descr (forth-next-known-forth-word to))
670: (when loudly
671: (when (equal 0 (% msg-count 100))
672: (message "Parsing Forth code...%s"
673: (make-string (/ msg-count 100) ?.)))
674: (setq msg-count (1+ msg-count)))
675: (forth-set-word-properties state word-descr)
676: (when state (put-text-property last-location (point) 'forth-state t))
677: (let ((type (car word-descr)))
678: (if (eq type 'definition-starter) (setq state t))
679: (if (eq type 'definition-ender) (setq state nil))
680: (setq last-location (point))))
681: ;; update state property up to `to'
682: (if (and state (< (point) to))
683: (put-text-property last-location to 'forth-state t))
684: ;; extend search if following state properties differ from current state
685: (if (< to (point-max))
686: (if (not (equal state (get-text-property (1+ to) 'forth-state)))
687: (let ((extend-to (next-single-property-change
688: to 'forth-state (current-buffer) (point-max))))
689: (forth-update-properties to extend-to))
690: ))
691: )))
692:
693: ;; save-buffer-state borrowed from `font-lock.el'
694: (eval-when-compile
695: (defmacro forth-save-buffer-state (varlist &rest body)
696: "Bind variables according to VARLIST and eval BODY restoring buffer state."
697: (` (let* ((,@ (append varlist
698: '((modified (buffer-modified-p)) (buffer-undo-list t)
699: (inhibit-read-only t) (inhibit-point-motion-hooks t)
700: before-change-functions after-change-functions
701: deactivate-mark buffer-file-name buffer-file-truename))))
702: (,@ body)
703: (when (and (not modified) (buffer-modified-p))
704: (set-buffer-modified-p nil))))))
705:
706: ;; Function that is added to the `change-functions' hook. Calls
707: ;; `forth-update-properties' and keeps care of disabling undo information
708: ;; and stuff like that.
709: (defun forth-change-function (from to len &optional loudly)
710: (save-match-data
711: (forth-save-buffer-state
712: ()
713: (unless forth-disable-parser (forth-update-properties from to loudly))
714: (forth-update-warn-long-lines))))
715:
716: (defun forth-fontification-function (from)
717: "Function to be called from `fontification-functions' of Emacs 21."
718: (save-match-data
719: (forth-save-buffer-state
720: ((to (min (point-max) (+ from 100))))
721: (unless (or forth-disable-parser (not forth-jit-parser)
722: (get-text-property from 'fontified))
723: (forth-update-properties from to)))))
724:
725: (eval-when-compile
726: (byte-compile 'forth-set-word-properties)
727: (byte-compile 'forth-next-known-forth-word)
728: (byte-compile 'forth-update-properties)
729: (byte-compile 'forth-delete-properties)
730: (byte-compile 'forth-get-regexp-branch))
731:
732: ;;; imenu support
733: ;;;
734: (defvar forth-defining-words
735: '("VARIABLE" "CONSTANT" "2VARIABLE" "2CONSTANT" "FVARIABLE" "FCONSTANT"
736: "USER" "VALUE" "field" "end-struct" "VOCABULARY" "CREATE" ":" "CODE"
737: "DEFER" "ALIAS")
738: "List of words, that define the following word.
739: Used for imenu index generation.")
740:
741: (defvar forth-defining-words-regexp nil
742: "Regexp that's generated for matching `forth-defining-words'")
743:
744: (defun forth-next-definition-starter ()
745: (progn
746: (let* ((pos (re-search-forward forth-defining-words-regexp (point-max) t)))
747: (if pos
748: (if (or (text-property-not-all (match-beginning 0) (match-end 0)
749: 'forth-parsed nil)
750: (text-property-not-all (match-beginning 0) (match-end 0)
751: 'forth-state nil))
752: (forth-next-definition-starter)
753: t)
754: nil))))
755:
756: (defun forth-create-index ()
757: (let* ((forth-defining-words-regexp
758: (concat "\\<\\(" (regexp-opt forth-defining-words) "\\)\\>"))
759: (index nil))
760: (goto-char (point-min))
761: (while (forth-next-definition-starter)
762: (if (looking-at "[ \t]*\\([^ \t\n]+\\)")
763: (setq index (cons (cons (match-string 1) (point)) index))))
764: index))
765:
766: ;; top-level require is executed at byte-compile and load time
767: (eval-and-compile (forth-require 'speedbar))
768:
769: ;; this code is executed at load-time only
770: (when (memq 'speedbar features)
771: (speedbar-add-supported-extension ".fs")
772: (speedbar-add-supported-extension ".fb"))
773:
774: ;; (require 'profile)
775: ;; (setq profile-functions-list '(forth-set-word-properties forth-next-known-forth-word forth-update-properties forth-delete-properties forth-get-regexp-branch))
776:
777: ;;; Indentation
778: ;;;
779:
780: ;; Return, whether `pos' is the first forth word on its line
781: (defun forth-first-word-on-line-p (pos)
782: (save-excursion
783: (beginning-of-line)
784: (skip-chars-forward " \t")
785: (= pos (point))))
786:
787: ;; Return indentation data (SELF-INDENT . NEXT-INDENT) of next known
788: ;; indentation word, or nil if there is no word up to `to'.
789: ;; Position `point' at location just after found word, or at `to'. Parsed
790: ;; ranges of text will not be taken into consideration!
791: (defun forth-next-known-indent-word (to)
792: (if (<= (point) to)
793: (progn
794: (let* ((regexp (car forth-compiled-indent-words))
795: (pos (re-search-forward regexp to t)))
796: (if pos
797: (let* ((start (match-beginning 0))
798: (end (match-end 0))
799: (branch (forth-get-regexp-branch))
800: (descr (cdr forth-compiled-indent-words))
801: (indent (cdr (assoc branch descr)))
802: (type (nth 2 indent)))
803: ;; skip words that are parsed (strings/comments) and
804: ;; non-immediate words inside definitions
805: (if (or (text-property-not-all start end 'forth-parsed nil)
806: (and (eq type 'non-immediate)
807: (text-property-not-all start end
808: 'forth-state nil)))
809: (forth-next-known-indent-word to)
810: (if (forth-first-word-on-line-p (match-beginning 0))
811: (nth 0 indent) (nth 1 indent))))
812: nil)))
813: nil))
814:
815: ;; Translate indentation value `indent' to indentation column. Multiples of
816: ;; 2 correspond to multiples of `forth-indent-level'. Odd numbers get an
817: ;; additional `forth-minor-indent-level' added (or substracted).
818: (defun forth-convert-to-column (indent)
819: (let* ((sign (if (< indent 0) -1 1))
820: (value (abs indent))
821: (major (* (/ value 2) forth-indent-level))
822: (minor (* (% value 2) forth-minor-indent-level)))
823: (* sign (+ major minor))))
824:
825: ;; Return the column increment, that the current line of forth code does to
826: ;; the current or following lines. `which' specifies which indentation values
827: ;; to use. 0 means the indentation of following lines relative to current
828: ;; line, 1 means the indentation of the current line relative to the previous
829: ;; line. Return `nil', if there are no indentation words on the current line.
830: (defun forth-get-column-incr (which)
831: (save-excursion
832: (let ((regexp (car forth-compiled-indent-words))
833: (word-indent)
834: (self-indent nil)
835: (next-indent nil)
836: (to (save-excursion (end-of-line) (point))))
837: (beginning-of-line)
838: (while (setq word-indent (forth-next-known-indent-word to))
839: (let* ((self-incr (car word-indent))
840: (next-incr (cdr word-indent))
841: (self-column-incr (forth-convert-to-column self-incr))
842: (next-column-incr (forth-convert-to-column next-incr)))
843: (setq next-indent (if next-indent next-indent 0))
844: (setq self-indent (if self-indent self-indent 0))
845: (if (or (and (> next-indent 0) (< self-column-incr 0))
846: (and (< next-indent 0) (> self-column-incr 0)))
847: (setq next-indent (+ next-indent self-column-incr))
848: (setq self-indent (+ self-indent self-column-incr)))
849: (setq next-indent (+ next-indent next-column-incr))))
850: (nth which (list self-indent next-indent)))))
851:
852: ;; Find previous line that contains indentation words, return the column,
853: ;; to which following text should be indented to.
854: (defun forth-get-anchor-column ()
855: (save-excursion
856: (if (/= 0 (forward-line -1)) 0
857: (let ((indent))
858: (while (not (or (setq indent (forth-get-column-incr 1))
859: (<= (point) (point-min))))
860: (forward-line -1))
861: (+ (current-indentation) (if indent indent 0))))))
862:
863: (defun forth-indent-line (&optional flag)
864: "Correct indentation of the current Forth line."
865: (let* ((anchor (forth-get-anchor-column))
866: (column-incr (forth-get-column-incr 0)))
867: (forth-indent-to (if column-incr (+ anchor column-incr) anchor))))
868:
869: (defun forth-current-column ()
870: (- (point) (save-excursion (beginning-of-line) (point))))
871: (defun forth-current-indentation ()
872: (- (save-excursion (beginning-of-line) (forward-to-indentation 0) (point))
873: (save-excursion (beginning-of-line) (point))))
874:
875: (defun forth-indent-to (x)
876: (let ((p nil))
877: (setq p (- (forth-current-column) (forth-current-indentation)))
878: (forth-delete-indentation)
879: (beginning-of-line)
880: (indent-to x)
881: (if (> p 0) (forward-char p))))
882:
883: (defun forth-delete-indentation ()
884: (save-excursion
885: (delete-region
886: (progn (beginning-of-line) (point))
887: (progn (back-to-indentation) (point)))))
888:
889: (defun forth-indent-command ()
890: (interactive)
891: (forth-indent-line t))
892:
893: ;; remove trailing whitespaces in current line
894: (defun forth-remove-trailing ()
895: (save-excursion
896: (end-of-line)
897: (delete-region (point) (progn (skip-chars-backward " \t") (point)))))
898:
899: ;; insert newline, removing any trailing whitespaces in the current line
900: (defun forth-newline-remove-trailing ()
901: (save-excursion
902: (delete-region (point) (progn (skip-chars-backward " \t") (point))))
903: (newline))
904: ; (let ((was-point (point-marker)))
905: ; (unwind-protect
906: ; (progn (forward-line -1) (forth-remove-trailing))
907: ; (goto-char (was-point)))))
908:
909: ;; workaround for bug in `reindent-then-newline-and-indent'
910: (defun forth-reindent-then-newline-and-indent ()
911: (interactive "*")
912: (indent-according-to-mode)
913: (forth-newline-remove-trailing)
914: (indent-according-to-mode))
915:
916:
917: ;;; Block file encoding/decoding (dk)
918: ;;;
919:
920: (defconst forth-c/l 64 "Number of characters per block line")
921: (defconst forth-l/b 16 "Number of lines per block")
922:
923: ;; Check whether the unconverted block file line, point is in, does not
924: ;; contain `\n' and `\t' characters.
925: (defun forth-check-block-line (line)
926: (let ((end (save-excursion (beginning-of-line) (forward-char forth-c/l)
927: (point))))
928: (save-excursion
929: (beginning-of-line)
930: (when (search-forward "\n" end t)
931: (message "Warning: line %i contains newline character #10" line)
932: (ding t))
933: (beginning-of-line)
934: (when (search-forward "\t" end t)
935: (message "Warning: line %i contains tab character #8" line)
936: (ding t)))))
937:
938: (defun forth-convert-from-block (from to)
939: "Convert block file format to stream source in current buffer."
940: (let ((line (count-lines (point-min) from)))
941: (save-excursion
942: (goto-char from)
943: (set-mark to)
944: (while (< (+ (point) forth-c/l) (mark t))
945: (setq line (1+ line))
946: (forth-check-block-line line)
947: (forward-char forth-c/l)
948: (forth-newline-remove-trailing))
949: (when (= (+ (point) forth-c/l) (mark t))
950: (forth-remove-trailing))
951: (mark t))))
952:
953: ;; Pad a line of a block file up to `forth-c/l' characters, positioning `point'
954: ;; at the end of line.
955: (defun forth-pad-block-line ()
956: (save-excursion
957: (end-of-line)
958: (if (<= (current-column) forth-c/l)
959: (move-to-column forth-c/l t)
960: (message "Line %i longer than %i characters, truncated"
961: (count-lines (point-min) (point)) forth-c/l)
962: (ding t)
963: (move-to-column forth-c/l t)
964: (delete-region (point) (progn (end-of-line) (point))))))
965:
966: ;; Replace tab characters in current line by spaces.
967: (defun forth-convert-tabs-in-line ()
968: (save-excursion
969: (beginning-of-line)
970: (while (search-forward "\t" (save-excursion (end-of-line) (point)) t)
971: (backward-char)
972: (delete-region (point) (1+ (point)))
973: (insert-char ?\ (- tab-width (% (current-column) tab-width))))))
974:
975: ;; Delete newline at end of current line, concatenating it with the following
976: ;; line. Place `point' at end of newly formed line.
977: (defun forth-delete-newline ()
978: (end-of-line)
979: (delete-region (point) (progn (beginning-of-line 2) (point))))
980:
981: (defun forth-convert-to-block (from to &optional original-buffer)
982: "Convert range of text to block file format in current buffer."
983: (let* ((lines 0)) ; I have to count lines myself, since `count-lines' has
984: ; problems with trailing newlines...
985: (save-excursion
986: (goto-char from)
987: (set-mark to)
988: ;; pad lines to full length (`forth-c/l' characters per line)
989: (while (< (save-excursion (end-of-line) (point)) (mark t))
990: (setq lines (1+ lines))
991: (forth-pad-block-line)
992: (forth-convert-tabs-in-line)
993: (forward-line))
994: ;; also make sure the last line is padded, if `to' is at its end
995: (end-of-line)
996: (when (= (point) (mark t))
997: (setq lines (1+ lines))
998: (forth-pad-block-line)
999: (forth-convert-tabs-in-line))
1000: ;; remove newlines between lines
1001: (goto-char from)
1002: (while (< (save-excursion (end-of-line) (point)) (mark t))
1003: (forth-delete-newline))
1004: ;; append empty lines, until last block is complete
1005: (goto-char (mark t))
1006: (let* ((required (* (/ (+ lines (1- forth-l/b)) forth-l/b) forth-l/b))
1007: (pad-lines (- required lines)))
1008: (while (> pad-lines 0)
1009: (insert-char ?\ forth-c/l)
1010: (setq pad-lines (1- pad-lines))))
1011: (point))))
1012:
1013: (defun forth-detect-block-file-p ()
1014: "Return non-nil if the current buffer is in block file format. Detection is
1015: done by checking whether the first line has 1024 characters or more."
1016: (save-restriction
1017: (widen)
1018: (save-excursion
1019: (goto-char (point-min))
1020: (end-of-line)
1021: (>= (current-column) 1024))))
1022:
1023: ;; add block file conversion routines to `format-alist'
1024: (defconst forth-block-format-description
1025: '(forth-blocks "Forth block source file" nil
1026: forth-convert-from-block forth-convert-to-block
1027: t normal-mode))
1028: (unless (memq forth-block-format-description format-alist)
1029: (setq format-alist (cons forth-block-format-description format-alist)))
1030:
1031: ;;; End block file encoding/decoding
1032:
1033: ;;; Block file editing
1034: ;;;
1035: (defvar forth-overlay-arrow-string ">>")
1036: (defvar forth-block-base 1 "Number of first block in block file")
1037: (defvar forth-show-screen nil
1038: "Non-nil means to show screen starts and numbers (for block files)")
1039: (defvar forth-warn-long-lines nil
1040: "Non-nil means to warn about lines that are longer than 64 characters")
1041:
1042: (defvar forth-screen-marker nil)
1043: (defvar forth-screen-number-string nil)
1044:
1045: (defun forth-update-show-screen ()
1046: "If `forth-show-screen' is non-nil, put overlay arrow to start of screen,
1047: `point' is in. If arrow now points to different screen than before, display
1048: screen number."
1049: (if (not forth-show-screen)
1050: (setq overlay-arrow-string nil)
1051: (save-excursion
1052: (let* ((line (count-lines (point-min) (min (point-max) (1+ (point)))))
1053: (first-line (1+ (* (/ (1- line) forth-l/b) forth-l/b)))
1054: (scr (+ forth-block-base (/ first-line forth-l/b))))
1055: (setq overlay-arrow-string forth-overlay-arrow-string)
1056: (goto-line first-line)
1057: (setq overlay-arrow-position forth-screen-marker)
1058: (set-marker forth-screen-marker
1059: (save-excursion (goto-line first-line) (point)))
1060: (setq forth-screen-number-string (format "%d" scr))))))
1061:
1062: (add-hook 'forth-motion-hooks 'forth-update-show-screen)
1063:
1064: (defun forth-update-warn-long-lines ()
1065: "If `forth-warn-long-lines' is non-nil, display a warning whenever a line
1066: exceeds 64 characters."
1067: (when forth-warn-long-lines
1068: (when (> (save-excursion (end-of-line) (current-column)) forth-c/l)
1069: (message "Warning: current line exceeds %i characters"
1070: forth-c/l))))
1071:
1072: (add-hook 'forth-motion-hooks 'forth-update-warn-long-lines)
1073:
1074: ;;; End block file editing
1075:
1076:
1077: (defvar forth-mode-abbrev-table nil
1078: "Abbrev table in use in Forth-mode buffers.")
1079:
1080: (define-abbrev-table 'forth-mode-abbrev-table ())
1081:
1082: (defvar forth-mode-map nil
1083: "Keymap used in Forth mode.")
1084:
1085: (if (not forth-mode-map)
1086: (setq forth-mode-map (make-sparse-keymap)))
1087:
1088: ;(define-key forth-mode-map "\M-\C-x" 'compile)
1089: (define-key forth-mode-map "\C-x\\" 'comment-region)
1090: (define-key forth-mode-map "\C-x~" 'forth-remove-tracers)
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-*\x7f")))
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:
1199: Variables controlling syntax hilighting/recognition of parsed text:
1200: `forth-words'
1201: List of words that have a special parsing behaviour and/or should be
1202: hilighted. Add custom words by setting forth-custom-words in your
1203: .emacs, or by setting forth-local-words, in source-files' local
1204: variables lists.
1205: forth-use-objects
1206: Set this variable to non-nil in your .emacs, or in a local variables
1207: list, to hilight and recognize the words from the \"Objects\" package
1208: for object-oriented programming.
1209: forth-use-oof
1210: Same as above, just for the \"OOF\" package.
1211: forth-custom-words
1212: List of custom Forth words to prepend to `forth-words'. Should be set
1213: in your .emacs.
1214: forth-local-words
1215: List of words to prepend to `forth-words', whenever a forth-mode
1216: buffer is created. That variable should be set by Forth sources, using
1217: a local variables list at the end of file, to get file-specific
1218: hilighting.
1219: 0 [IF]
1220: Local Variables: ...
1221: forth-local-words: ...
1222: End:
1223: [THEN]
1224: forth-hilight-level
1225: Controls how much syntax hilighting is done. Should be in the range
1226: 0..3
1227:
1228: Variables controlling indentation style:
1229: `forth-indent-words'
1230: List of words that influence indentation.
1231: forth-local-indent-words
1232: List of words to prepend to `forth-indent-words', similar to
1233: forth-local-words. Should be used for specifying file-specific
1234: indentation, using a local variables list.
1235: forth-custom-indent-words
1236: List of words to prepend to `forth-indent-words'. Should be set in your
1237: .emacs.
1238: forth-indent-level
1239: Indentation increment/decrement of Forth statements.
1240: forth-minor-indent-level
1241: Minor indentation increment/decrement of Forth statemens.
1242:
1243: Variables controlling block-file editing:
1244: forth-show-screen
1245: Non-nil means, that the start of the current screen is marked by an
1246: overlay arrow, and screen numbers are displayed in the mode line.
1247: This variable is by default nil for `forth-mode' and t for
1248: `forth-block-mode'.
1249: forth-overlay-arrow-string
1250: String to display as the overlay arrow, when `forth-show-screen' is t.
1251: Setting this variable to nil disables the overlay arrow.
1252: forth-block-base
1253: Screen number of the first block in a block file. Defaults to 1.
1254: forth-warn-long-lines
1255: Non-nil means that a warning message is displayed whenever you edit or
1256: move over a line that is longer than 64 characters (the maximum line
1257: length that can be stored into a block file). This variable defaults to
1258: t for `forth-block-mode' and to nil for `forth-mode'.
1259:
1260: Variables controlling interaction with the Forth-process (also see
1261: `run-forth'):
1262: forth-program-name
1263: Program invoked by the `run-forth' command (including arguments).
1264: inferior-forth-mode-hook
1265: Hook for customising inferior-forth-mode.
1266: forth-compile-command
1267: Default command to execute on `compile'.
1268: "
1269: (interactive)
1270: (kill-all-local-variables)
1271: (use-local-map forth-mode-map)
1272: (setq mode-name "Forth")
1273: (setq major-mode 'forth-mode)
1274: (forth-install-motion-hook)
1275: ;; convert buffer contents from block file format, if necessary
1276: (when (forth-detect-block-file-p)
1277: (widen)
1278: (message "Converting from Forth block source...")
1279: (forth-convert-from-block (point-min) (point-max))
1280: (message "Converting from Forth block source...done"))
1281: ;; if user switched from forth-block-mode to forth-mode, make sure the file
1282: ;; is now stored as normal strem source
1283: (when (equal buffer-file-format '(forth-blocks))
1284: (setq buffer-file-format nil))
1285: (forth-mode-variables)
1286: ; (if (not (forth-process-running-p))
1287: ; (run-forth forth-program-name))
1288: (run-hooks 'forth-mode-hook))
1289:
1290: ;;;###autoload
1291: (define-derived-mode forth-block-mode forth-mode "Forth Block Source"
1292: "Major mode for editing Forth block source files, derived from
1293: `forth-mode'. Differences to `forth-mode' are:
1294: * files are converted to block format, when written (`buffer-file-format'
1295: is set to `(forth-blocks)')
1296: * `forth-show-screen' and `forth-warn-long-lines' are t by default
1297:
1298: Note that the length of lines in block files is limited to 64 characters.
1299: When writing longer lines to a block file, a warning is displayed in the
1300: echo area and the line is truncated.
1301:
1302: Another problem is imposed by block files that contain newline or tab
1303: characters. When Emacs converts such files back to block file format,
1304: it'll translate those characters to a number of spaces. However, when
1305: you read such a file, a warning message is displayed in the echo area,
1306: including a line number that may help you to locate and fix the problem.
1307:
1308: So have a look at the *Messages* buffer, whenever you hear (or see) Emacs'
1309: bell during block file read/write operations."
1310: (setq buffer-file-format '(forth-blocks))
1311: (setq forth-show-screen t)
1312: (setq forth-warn-long-lines t)
1313: (setq forth-screen-number-string (format "%d" forth-block-base))
1314: (setq mode-line-format (append (reverse (cdr (reverse mode-line-format)))
1315: '("--S" forth-screen-number-string "-%-"))))
1316:
1317: (add-hook 'forth-mode-hook
1318: '(lambda ()
1319: (make-local-variable 'compile-command)
1320: (setq compile-command "gforth ")
1321: (forth-hack-local-variables)
1322: (forth-customize-words)
1323: (forth-compile-words)
1324: (unless (and forth-jit-parser (>= emacs-major-version 21))
1325: (forth-change-function (point-min) (point-max) nil t))))
1326:
1327: (defun forth-fill-paragraph ()
1328: "Fill comments (starting with '\'; do not fill code (block style
1329: programmers who tend to fill code won't use emacs anyway:-)."
1330: ; Currently only comments at the start of the line are filled.
1331: ; Something like lisp-fill-paragraph may be better. We cannot use
1332: ; fill-paragraph, because it removes the \ from the first comment
1333: ; line. Therefore we have to look for the first line of the comment
1334: ; and use fill-region.
1335: (interactive)
1336: (save-excursion
1337: (beginning-of-line)
1338: (while (and
1339: (= (forward-line -1) 0)
1340: (looking-at "[ \t]*\\\\g?[ \t]+")))
1341: (if (not (looking-at "[ \t]*\\\\g?[ \t]+"))
1342: (forward-line 1))
1343: (let ((from (point))
1344: (to (save-excursion (forward-paragraph) (point))))
1345: (if (looking-at "[ \t]*\\\\g?[ \t]+")
1346: (progn (goto-char (match-end 0))
1347: (set-fill-prefix)
1348: (fill-region from to nil))))))
1349:
1350: (defun forth-comment-indent ()
1351: (save-excursion
1352: (beginning-of-line)
1353: (if (looking-at ":[ \t]*")
1354: (progn
1355: (end-of-line)
1356: (skip-chars-backward " \t\n")
1357: (1+ (current-column)))
1358: comment-column)))
1359:
1360:
1361: ;; Forth commands
1362:
1363: (defun forth-remove-tracers ()
1364: "Remove tracers of the form `~~ '. Queries the user for each occurrence."
1365: (interactive)
1366: (query-replace-regexp "\\(~~ \\| ~~$\\)" "" nil))
1367:
1368: (define-key forth-mode-map "\C-x\C-e" 'compile)
1369: (define-key forth-mode-map "\C-x\C-n" 'next-error)
1370: (require 'compile)
1371:
1372: (defvar forth-compile-command "gforth ")
1373: ;(defvar forth-compilation-window-percent-height 30)
1374:
1375: (defun forth-split ()
1376: (interactive)
1377: (forth-split-1 "*forth*"))
1378:
1379: (defun forth-split-1 (buffer)
1380: (if (not (eq (window-buffer) (get-buffer buffer)))
1381: (progn
1382: (delete-other-windows)
1383: (split-window-vertically
1384: (/ (* (screen-height) forth-percent-height) 100))
1385: (other-window 1)
1386: (switch-to-buffer buffer)
1387: (goto-char (point-max))
1388: (other-window 1))))
1389:
1390: (defun forth-compile (command)
1391: (interactive (list (setq forth-compile-command (read-string "Compile command: " forth-compile-command))))
1392: (forth-split-1 "*compilation*")
1393: (setq ctools-compile-command command)
1394: (compile1 ctools-compile-command "No more errors"))
1395:
1396: ;;; Forth menu
1397: ;;; Mikael Karlsson <qramika@eras70.ericsson.se>
1398:
1399: ;; (dk) code commented out due to complaints of XEmacs users. After
1400: ;; all, there's imenu/speedbar, which uses much smarter scanning
1401: ;; rules.
1402:
1403: ;; (cond ((string-match "XEmacs\\|Lucid" emacs-version)
1404: ;; (require 'func-menu)
1405:
1406: ;; (defconst fume-function-name-regexp-forth
1407: ;; "^\\(:\\)[ \t]+\\([^ \t]*\\)"
1408: ;; "Expression to get word definitions in Forth.")
1409:
1410: ;; (setq fume-function-name-regexp-alist
1411: ;; (append '((forth-mode . fume-function-name-regexp-forth)
1412: ;; ) fume-function-name-regexp-alist))
1413:
1414: ;; ;; Find next forth word in the buffer
1415: ;; (defun fume-find-next-forth-function-name (buffer)
1416: ;; "Searches for the next forth word in BUFFER."
1417: ;; (set-buffer buffer)
1418: ;; (if (re-search-forward fume-function-name-regexp nil t)
1419: ;; (let ((beg (match-beginning 2))
1420: ;; (end (match-end 2)))
1421: ;; (cons (buffer-substring beg end) beg))))
1422:
1423: ;; (setq fume-find-function-name-method-alist
1424: ;; (append '((forth-mode . fume-find-next-forth-function-name))))
1425:
1426: ;; ))
1427: ;;; End Forth menu
1428:
1429: ;;; File folding of forth-files
1430: ;;; uses outline
1431: ;;; Toggle activation with M-x fold-f (when editing a forth-file)
1432: ;;; Use f9 to expand, f10 to hide, Or the menubar in xemacs
1433: ;;;
1434: ;;; Works most of the times but loses sync with the cursor occasionally
1435: ;;; Could be improved by also folding on comments
1436:
1437: ;; (dk) This code needs a rewrite; just too ugly and doesn't use the
1438: ;; newer and smarter scanning rules of `imenu'. Who needs it anyway??
1439:
1440: ;; (require 'outline)
1441:
1442: ;; (defun f-outline-level ()
1443: ;; (cond ((looking-at "\\`\\\\")
1444: ;; 0)
1445: ;; ((looking-at "\\\\ SEC")
1446: ;; 0)
1447: ;; ((looking-at "\\\\ \\\\ .*")
1448: ;; 0)
1449: ;; ((looking-at "\\\\ DEFS")
1450: ;; 1)
1451: ;; ((looking-at "\\/\\* ")
1452: ;; 1)
1453: ;; ((looking-at ": .*")
1454: ;; 1)
1455: ;; ((looking-at "\\\\G")
1456: ;; 2)
1457: ;; ((looking-at "[ \t]+\\\\")
1458: ;; 3)))
1459:
1460: ;; (defun fold-f ()
1461: ;; (interactive)
1462: ;; (add-hook 'outline-minor-mode-hook 'hide-body)
1463:
1464: ;; ; outline mode header start, i.e. find word definitions
1465: ;; ;;; (setq outline-regexp "^\\(:\\)[ \t]+\\([^ \t]*\\)")
1466: ;; (setq outline-regexp "\\`\\\\\\|:\\|\\\\ SEC\\|\\\\G\\|[ \t]+\\\\\\|\\\\ DEFS\\|\\/\\*\\|\\\\ \\\\ .*")
1467: ;; (setq outline-level 'f-outline-level)
1468:
1469: ;; (outline-minor-mode)
1470: ;; (define-key outline-minor-mode-map '(shift up) 'hide-sublevels)
1471: ;; (define-key outline-minor-mode-map '(shift right) 'show-children)
1472: ;; (define-key outline-minor-mode-map '(shift left) 'hide-subtree)
1473: ;; (define-key outline-minor-mode-map '(shift down) 'show-subtree))
1474:
1475:
1476: ;;(define-key global-map '(shift up) 'fold-f)
1477:
1478: ;;; end file folding
1479:
1480: ;;; func-menu is a package that scans your source file for function definitions
1481: ;;; and makes a menubar entry that lets you jump to any particular function
1482: ;;; definition by selecting it from the menu. The following code turns this on
1483: ;;; for all of the recognized languages. Scanning the buffer takes some time,
1484: ;;; but not much.
1485: ;;;
1486: ;; (cond ((string-match "XEmacs\\|Lucid" emacs-version)
1487: ;; (require 'func-menu)
1488: ;; ;; (define-key global-map 'f8 'function-menu)
1489: ;; (add-hook 'find-fible-hooks 'fume-add-menubar-entry)
1490: ;; ; (define-key global-map "\C-cg" 'fume-prompt-function-goto)
1491: ;; ; (define-key global-map '(shift button3) 'mouse-function-menu)
1492: ;; ))
1493:
1494: ;;;
1495: ;;; Inferior Forth interpreter
1496: ;;; -- mostly copied from `cmuscheme.el' of Emacs 21.2
1497: ;;;
1498:
1499: (eval-and-compile (forth-require 'comint))
1500:
1501: (when (memq 'comint features)
1502:
1503: (defvar forth-program-name "gforth"
1504: "*Program invoked by the `run-forth' command, including program arguments")
1505:
1506: (defcustom inferior-forth-mode-hook nil
1507: "*Hook for customising inferior-forth-mode."
1508: :type 'hook
1509: :group 'forth)
1510:
1511: (defvar inferior-forth-mode-map
1512: (let ((m (make-sparse-keymap)))
1513: (define-key m "\r" 'comint-send-input)
1514: (define-key m "\M-\C-x" 'forth-send-paragraph-and-go)
1515: (define-key m "\C-c\C-l" 'forth-load-file)
1516: m))
1517: ;; Install the process communication commands in the forth-mode keymap.
1518: (define-key forth-mode-map "\e\C-m" 'forth-send-paragraph-and-go)
1519: (define-key forth-mode-map "\eo" 'forth-send-buffer-and-go)
1520:
1521: (define-key forth-mode-map "\M-\C-x" 'forth-send-paragraph-and-go)
1522: (define-key forth-mode-map "\C-c\C-r" 'forth-send-region)
1523: (define-key forth-mode-map "\C-c\M-r" 'forth-send-region-and-go)
1524: (define-key forth-mode-map "\C-c\C-z" 'forth-switch-to-interactive)
1525: (define-key forth-mode-map "\C-c\C-l" 'forth-load-file)
1526:
1527: (defvar forth-process-buffer)
1528:
1529: (define-derived-mode inferior-forth-mode comint-mode "Inferior Forth"
1530: "Major mode for interacting with an inferior Forth process.
1531:
1532: The following commands are available:
1533: \\{inferior-forth-mode-map}
1534:
1535: A Forth process can be fired up with M-x run-forth.
1536:
1537: Customisation: Entry to this mode runs the hooks on comint-mode-hook and
1538: inferior-forth-mode-hook (in that order).
1539:
1540: You can send text to the inferior Forth process from other buffers containing
1541: Forth source.
1542: forth-switch-to-interactive switches the current buffer to the Forth
1543: process buffer.
1544: forth-send-paragraph sends the current paragraph to the Forth process.
1545: forth-send-region sends the current region to the Forth process.
1546: forth-send-buffer sends the current buffer to the Forth process.
1547:
1548: forth-send-paragraph-and-go, forth-send-region-and-go,
1549: forth-send-buffer-and-go switch to the Forth process buffer after
1550: sending their text.
1551: For information on running multiple processes in multiple buffers, see
1552: documentation for variable `forth-process-buffer'.
1553:
1554: Commands:
1555: Return after the end of the process' output sends the text from the
1556: end of process to point. If you accidentally suspend your process, use
1557: \\[comint-continue-subjob] to continue it. "
1558: ;; Customise in inferior-forth-mode-hook
1559: (setq comint-prompt-regexp "^")
1560: (setq mode-line-process '(":%s")))
1561:
1562: (defun forth-args-to-list (string)
1563: (let ((where (string-match "[ \t]" string)))
1564: (cond ((null where) (list string))
1565: ((not (= where 0))
1566: (cons (substring string 0 where)
1567: (forth-args-to-list (substring string (+ 1 where)
1568: (length string)))))
1569: (t (let ((pos (string-match "[^ \t]" string)))
1570: (if (null pos)
1571: nil
1572: (forth-args-to-list (substring string pos
1573: (length string)))))))))
1574:
1575: ;;;###autoload
1576: (defun run-forth (cmd)
1577: "Run an inferior Forth process, input and output via buffer *forth*.
1578: If there is a process already running in `*forth*', switch to that buffer.
1579: With argument, allows you to edit the command line (default is value
1580: of `forth-program-name'). Runs the hooks `inferior-forth-mode-hook'
1581: \(after the `comint-mode-hook' is run).
1582: \(Type \\[describe-mode] in the process buffer for a list of commands.)"
1583:
1584: (interactive (list (if current-prefix-arg
1585: (read-string "Run Forth: " forth-program-name)
1586: forth-program-name)))
1587: (if (not (comint-check-proc "*forth*"))
1588: (let ((cmdlist (forth-args-to-list cmd)))
1589: (set-buffer (apply 'make-comint "forth" (car cmdlist)
1590: nil (cdr cmdlist)))
1591: (inferior-forth-mode)))
1592: (setq forth-program-name cmd)
1593: (setq forth-process-buffer "*forth*")
1594: (pop-to-buffer "*forth*"))
1595:
1596: (defun forth-send-region (start end)
1597: "Send the current region to the inferior Forth process."
1598: (interactive "r")
1599: (comint-send-region (forth-proc) start end)
1600: (comint-send-string (forth-proc) "\n"))
1601:
1602: (defun forth-end-of-paragraph ()
1603: (if (looking-at "[\t\n ]+") (skip-chars-backward "\t\n "))
1604: (if (not (re-search-forward "\n[ \t]*\n" nil t))
1605: (goto-char (point-max))))
1606:
1607: (defun forth-send-paragraph ()
1608: "Send the current or the previous paragraph to the Forth process"
1609: (interactive)
1610: (let (end)
1611: (save-excursion
1612: (forth-end-of-paragraph)
1613: (skip-chars-backward "\t\n ")
1614: (setq end (point))
1615: (if (re-search-backward "\n[ \t]*\n" nil t)
1616: (setq start (point))
1617: (goto-char (point-min)))
1618: (skip-chars-forward "\t\n ")
1619: (forth-send-region (point) end))))
1620:
1621: (defun forth-send-paragraph-and-go ()
1622: "Send the current or the previous paragraph to the Forth process.
1623: Then switch to the process buffer."
1624: (interactive)
1625: (forth-send-paragraph)
1626: (forth-switch-to-interactive t))
1627:
1628: (defun forth-send-buffer ()
1629: "Send the current buffer to the Forth process."
1630: (interactive)
1631: (if (eq (current-buffer) forth-process-buffer)
1632: (error "Not allowed to send this buffer's contents to Forth"))
1633: (forth-send-region (point-min) (point-max)))
1634:
1635: (defun forth-send-buffer-and-go ()
1636: "Send the current buffer to the Forth process.
1637: Then switch to the process buffer."
1638: (interactive)
1639: (forth-send-buffer)
1640: (forth-switch-to-interactive t))
1641:
1642:
1643: (defun forth-switch-to-interactive (eob-p)
1644: "Switch to the Forth process buffer.
1645: With argument, position cursor at end of buffer."
1646: (interactive "P")
1647: (if (get-buffer forth-process-buffer)
1648: (pop-to-buffer forth-process-buffer)
1649: (error "No current process buffer. See variable `forth-process-buffer'"))
1650: (cond (eob-p
1651: (push-mark)
1652: (goto-char (point-max)))))
1653:
1654: (defun forth-send-region-and-go (start end)
1655: "Send the current region to the inferior Forth process.
1656: Then switch to the process buffer."
1657: (interactive "r")
1658: (forth-send-region start end)
1659: (forth-switch-to-interactive t))
1660:
1661: (defcustom forth-source-modes '(forth-mode forth-block-mode)
1662: "*Used to determine if a buffer contains Forth source code.
1663: If it's loaded into a buffer that is in one of these major modes, it's
1664: considered a Forth source file by `forth-load-file' and `forth-compile-file'.
1665: Used by these commands to determine defaults."
1666: :type '(repeat function)
1667: :group 'forth)
1668:
1669: (defvar forth-prev-l/c-dir/file nil
1670: "Caches the last (directory . file) pair.
1671: Caches the last pair used in the last `forth-load-file' or
1672: `forth-compile-file' command. Used for determining the default in the
1673: next one.")
1674:
1675: (defun forth-load-file (file-name)
1676: "Load a Forth file FILE-NAME into the inferior Forth process."
1677: (interactive (comint-get-source "Load Forth file: " forth-prev-l/c-dir/file
1678: forth-source-modes t)) ; T because LOAD
1679: ; needs an exact name
1680: (comint-check-source file-name) ; Check to see if buffer needs saved.
1681: (setq forth-prev-l/c-dir/file (cons (file-name-directory file-name)
1682: (file-name-nondirectory file-name)))
1683: (comint-send-string (forth-proc) (concat "(load \""
1684: file-name
1685: "\"\)\n")))
1686:
1687:
1688:
1689: (defvar forth-process-buffer nil "*The current Forth process buffer.
1690:
1691: See `scheme-buffer' for an explanation on how to run multiple Forth
1692: processes.")
1693:
1694: (defun forth-proc ()
1695: "Return the current Forth process. See variable `forth-process-buffer'."
1696: (let ((proc (get-buffer-process (if (eq major-mode 'inferior-forth-mode)
1697: (current-buffer)
1698: forth-process-buffer))))
1699: (or proc
1700: (error "No current process. See variable `forth-process-buffer'"))))
1701: ) ; (memq 'comint features)
1702:
1703: (provide 'forth-mode)
1704:
1705: ;;; gforth.el ends here
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