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Tue Jul 15 16:11:49 2008 UTC (15 years, 2 months ago) by
anton
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updated copyright years
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1: ;;; gforth.el --- major mode for editing (G)Forth sources
2:
3: ;; Copyright (C) 1995,1996,1997,1998,2000,2001,2003,2004,2007,2008 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-number (match-string 0 emacs-version)))))
63:
64: ;; Code ripped from `subr.el' for compatability with Emacs versions
65: ;; prior to 20.1
66: (eval-when-compile
67: (defun forth-emacs-older (major minor)
68: (or (< emacs-major-version major)
69: (and (= emacs-major-version major) (< emacs-minor-version minor))))
70:
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: (eval-and-compile
83: (defun forth-require (feature)
84: (condition-case err (require feature) (error nil))))
85:
86: (require 'font-lock)
87:
88: ;; define `font-lock-warning-face' in emacs-versions prior to 20.1
89: ;; (ripped from `font-lock.el')
90: (unless (boundp 'font-lock-warning-face)
91: (message "defining font-lock-warning-face")
92: (make-face 'font-lock-warning-face)
93: (defvar font-lock-warning-face 'font-lock-warning-face)
94: (set-face-foreground font-lock-warning-face "red")
95: (make-face-bold font-lock-warning-face))
96:
97: ;; define `font-lock-constant-face' in XEmacs (just copy
98: ;; `font-lock-preprocessor-face')
99: (unless (boundp 'font-lock-constant-face)
100: (copy-face font-lock-preprocessor-face 'font-lock-constant-face))
101:
102:
103: ;; define `regexp-opt' in emacs versions prior to 20.1
104: ;; (this implementation is extremely inefficient, though)
105: (eval-and-compile (forth-require 'regexp-opt))
106: (unless (memq 'regexp-opt features)
107: (message (concat
108: "Warning: your Emacs version doesn't support `regexp-opt'. "
109: "Hilighting will be slow."))
110: (defun regexp-opt (STRINGS &optional PAREN)
111: (let ((open (if PAREN "\\(" "")) (close (if PAREN "\\)" "")))
112: (concat open (mapconcat 'regexp-quote STRINGS "\\|") close)))
113: (defun regexp-opt-depth (re)
114: (if (string= (substring re 0 2) "\\(") 1 0)))
115:
116: ; todo:
117: ;
118:
119: ; screen-height existiert nicht in XEmacs, frame-height ersetzen?
120: ;
121:
122: ; Wörter ordentlich hilighten, die nicht auf Whitespace beginnen ( ..)IF
123: ; -- mit aktueller Konzeption nicht möglich??
124: ;
125: ; Konfiguration über customization groups
126: ;
127: ; Bereich nur auf Wortanfang/ende ausweiten, wenn Anfang bzw Ende in einem
128: ; Wort liegen (?) -- speed!
129: ;
130: ; 'forth-word' property muss eindeutig sein!
131: ;
132: ; Forth-Menu
133: ;
134: ; Interface zu GForth Prozessen (Patches von Michael Scholz)
135: ;
136: ; Byte-compile-Code rausschmeißen, Compilieren im Makefile über Emacs
137: ; batch-Modus
138: ;
139: ; forth-help Kram rausschmeißen
140: ;
141: ; XEmacs Kompatibilität? imenu/speedbar -> fume?
142: ;
143: ; Folding neuschreiben (neue Parser-Informationen benutzen)
144:
145: ;;; Motion-hooking (dk)
146: ;;;
147: (defun forth-idle-function ()
148: "Function that is called when Emacs is idle to detect cursor motion
149: in forth-block-mode buffers (which is mainly used for screen number
150: display in). Currently ignores forth-mode buffers but that may change
151: in the future."
152: (if (eq major-mode 'forth-block-mode)
153: (forth-check-motion)))
154:
155: (defvar forth-idle-function-timer nil
156: "Timer that runs `forth-idle-function' or nil if no timer installed.")
157:
158: (defun forth-install-motion-hook ()
159: "Install the motion-hooking mechanism. Currently uses idle timers
160: but might be transparently changed in the future."
161: (unless forth-idle-function-timer
162: ;; install idle function only once (first time forth-mode is used)
163: (setq forth-idle-function-timer
164: (run-with-idle-timer .05 t 'forth-idle-function))))
165:
166: (defvar forth-was-point nil)
167:
168: (defun forth-check-motion ()
169: "Run `forth-motion-hooks', if `point' changed since last call. This
170: used to be called via `post-command-hook' but uses idle timers now as
171: users complaint about lagging performance."
172: (when (or (eq forth-was-point nil) (/= forth-was-point (point)))
173: (setq forth-was-point (point))
174: (run-hooks 'forth-motion-hooks)))
175:
176:
177: ;;; Hilighting and indentation engine (dk)
178: ;;;
179: (defvar forth-disable-parser nil
180: "*Non-nil means to disable on-the-fly parsing of Forth-code.
181:
182: This will disable hilighting of forth-mode buffers and will decrease
183: the smartness of the indentation engine. Only set it to non-nil, if
184: your computer is very slow. To disable hilighting, set
185: `forth-hilight-level' to zero.")
186:
187: (defvar forth-jit-parser nil
188: "*Non-nil means to parse Forth-code just-in-time.
189:
190: This eliminates the need for initially parsing forth-mode buffers and
191: thus speeds up loading of Forth files. That feature is only available
192: in Emacs21 (and newer versions).")
193:
194: (defvar forth-words nil
195: "List of words for hilighting and recognition of parsed text areas.
196:
197: Hilighting of object-oriented Forth code is achieved, by appending either
198: `forth-objects-words' or `forth-oof-words' to the list, depending on the values of `forth-use-objects' or `forth-use-oof'.
199:
200: After `forth-words' changed, `forth-compile-words' must be called to
201: make the changes take effect.
202:
203: Each item of `forth-words' has the form
204: (MATCHER TYPE HILIGHT . &optional PARSED-TEXT ...)
205:
206: MATCHER is either a list of strings to match, or a REGEXP.
207: If it's a REGEXP, it should not be surrounded by '\\<' or '\\>', since
208: that'll be done automatically by the search routines.
209:
210: TYPE should be one of 'definiton-starter', 'definition-ender', 'compile-only',
211: 'immediate' or 'non-immediate'. Those information are required to determine
212: whether a word actually parses (and whether that parsed text needs to be
213: hilighted).
214:
215: HILIGHT is a cons cell of the form (FACE . MINIMUM-LEVEL)
216: Where MINIMUM-LEVEL specifies the minimum value of `forth-hilight-level',
217: that's required for matching text to be hilighted.
218:
219: PARSED-TEXT specifies whether and how a word parses following text. You can
220: specify as many subsequent PARSED-TEXT as you wish, but that shouldn't be
221: necessary very often. It has the following form:
222: (DELIM-REGEXP SKIP-LEADING-FLAG PARSED-TYPE HILIGHT)
223:
224: DELIM-REGEXP is a regular expression that should match strings of length 1,
225: which are delimiters for the parsed text.
226:
227: A non-nil value for PARSE-LEADING-FLAG means, that leading delimiter strings
228: before parsed text should be skipped. This is the parsing behaviour of the
229: Forth word WORD. Set it to t for name-parsing words, nil for comments and
230: strings.
231:
232: PARSED-TYPE specifies what kind of text is parsed. It should be on of 'name',
233: 'string' or 'comment'.")
234: (setq forth-words
235: '(
236: (("[") definition-ender (font-lock-keyword-face . 1))
237: (("]" "]l") definition-starter (font-lock-keyword-face . 1))
238: ((":") definition-starter (font-lock-keyword-face . 1)
239: "[ \t\n]" t name (font-lock-function-name-face . 3))
240: (("immediate" "compile-only" "restrict")
241: immediate (font-lock-keyword-face . 1))
242: (("does>") compile-only (font-lock-keyword-face . 1))
243: ((":noname") definition-starter (font-lock-keyword-face . 1))
244: ((";" ";code") definition-ender (font-lock-keyword-face . 1))
245: (("include" "require" "needs" "use")
246: non-immediate (font-lock-keyword-face . 1)
247: "[\n\t ]" t string (font-lock-string-face . 1))
248: (("included" "required" "thru" "load")
249: non-immediate (font-lock-keyword-face . 1))
250: (("[char]") compile-only (font-lock-keyword-face . 1)
251: "[ \t\n]" t string (font-lock-string-face . 1))
252: (("char") non-immediate (font-lock-keyword-face . 1)
253: "[ \t\n]" t string (font-lock-string-face . 1))
254: (("s\"" "c\"") immediate (font-lock-string-face . 1)
255: "[\"\n]" nil string (font-lock-string-face . 1))
256: ((".\"") compile-only (font-lock-string-face . 1)
257: "[\"\n]" nil string (font-lock-string-face . 1))
258: (("abort\"") compile-only (font-lock-keyword-face . 1)
259: "[\"\n]" nil string (font-lock-string-face . 1))
260: (("{") compile-only (font-lock-variable-name-face . 1)
261: "[\n}]" nil name (font-lock-variable-name-face . 1))
262: ((".(" "(") immediate (font-lock-comment-face . 1)
263: ")" nil comment (font-lock-comment-face . 1))
264: (("\\" "\\G") immediate (font-lock-comment-face . 1)
265: "[\n]" nil comment (font-lock-comment-face . 1))
266:
267: (("[if]" "[?do]" "[do]" "[for]" "[begin]"
268: "[endif]" "[then]" "[loop]" "[+loop]" "[next]" "[until]" "[repeat]"
269: "[again]" "[while]" "[else]")
270: immediate (font-lock-keyword-face . 2))
271: (("[ifdef]" "[ifundef]") immediate (font-lock-keyword-face . 2)
272: "[ \t\n]" t name (font-lock-function-name-face . 3))
273: (("if" "begin" "ahead" "do" "?do" "+do" "u+do" "-do" "u-do" "for"
274: "case" "of" "?dup-if" "?dup-0=-if" "then" "endif" "until"
275: "repeat" "again" "leave" "?leave"
276: "loop" "+loop" "-loop" "next" "endcase" "endof" "else" "while" "try"
277: "recover" "endtry" "iferror" "restore" "endtry-iferror"
278: "assert(" "assert0(" "assert1(" "assert2("
279: "assert3(" ")" "<interpretation" "<compilation" "interpretation>"
280: "compilation>")
281: compile-only (font-lock-keyword-face . 2))
282:
283: (("true" "false" "c/l" "bl" "cell" "pi" "w/o" "r/o" "r/w")
284: non-immediate (font-lock-constant-face . 2))
285: (("~~" "break:" "dbg") compile-only (font-lock-warning-face . 2))
286: (("break\"") compile-only (font-lock-warning-face . 1)
287: "[\"\n]" nil string (font-lock-string-face . 1))
288: (("postpone" "[is]" "defers" "[']" "[compile]")
289: compile-only (font-lock-keyword-face . 2)
290: "[ \t\n]" t name (font-lock-function-name-face . 3))
291: (("is" "what's") immediate (font-lock-keyword-face . 2)
292: "[ \t\n]" t name (font-lock-function-name-face . 3))
293: (("<is>" "'" "see") non-immediate (font-lock-keyword-face . 2)
294: "[ \t\n]" t name (font-lock-function-name-face . 3))
295: (("[to]") compile-only (font-lock-keyword-face . 2)
296: "[ \t\n]" t name (font-lock-variable-name-face . 3))
297: (("to") immediate (font-lock-keyword-face . 2)
298: "[ \t\n]" t name (font-lock-variable-name-face . 3))
299: (("<to>") non-immediate (font-lock-keyword-face . 2)
300: "[ \t\n]" t name (font-lock-variable-name-face . 3))
301:
302: (("create" "variable" "constant" "2variable" "2constant" "fvariable"
303: "fconstant" "value" "field" "user" "vocabulary"
304: "create-interpret/compile")
305: non-immediate (font-lock-type-face . 2)
306: "[ \t\n]" t name (font-lock-variable-name-face . 3))
307: ("\\S-+%" non-immediate (font-lock-type-face . 2))
308: (("defer" "alias" "create-interpret/compile:")
309: non-immediate (font-lock-type-face . 1)
310: "[ \t\n]" t name (font-lock-function-name-face . 3))
311: (("end-struct") non-immediate (font-lock-keyword-face . 2)
312: "[ \t\n]" t name (font-lock-type-face . 3))
313: (("struct") non-immediate (font-lock-keyword-face . 2))
314: ("-?[0-9]+\\(\\.[0-9]*e\\(-?[0-9]+\\)?\\|\\.?[0-9a-f]*\\)"
315: immediate (font-lock-constant-face . 3))
316: ))
317:
318: (defvar forth-use-objects nil
319: "*Non-nil makes forth-mode also hilight words from the \"Objects\" package.")
320: (defvar forth-objects-words
321: '(((":m") definition-starter (font-lock-keyword-face . 1)
322: "[ \t\n]" t name (font-lock-function-name-face . 3))
323: (("m:") definition-starter (font-lock-keyword-face . 1))
324: ((";m") definition-ender (font-lock-keyword-face . 1))
325: (("[current]" "[parent]") compile-only (font-lock-keyword-face . 1)
326: "[ \t\n]" t name (font-lock-function-name-face . 3))
327: (("current" "overrides") non-immediate (font-lock-keyword-face . 2)
328: "[ \t\n]" t name (font-lock-function-name-face . 3))
329: (("[to-inst]") compile-only (font-lock-keyword-face . 2)
330: "[ \t\n]" t name (font-lock-variable-name-face . 3))
331: (("[bind]") compile-only (font-lock-keyword-face . 2)
332: "[ \t\n]" t name (font-lock-type-face . 3)
333: "[ \t\n]" t name (font-lock-function-name-face . 3))
334: (("bind") non-immediate (font-lock-keyword-face . 2)
335: "[ \t\n]" t name (font-lock-type-face . 3)
336: "[ \t\n]" t name (font-lock-function-name-face . 3))
337: (("inst-var" "inst-value") non-immediate (font-lock-type-face . 2)
338: "[ \t\n]" t name (font-lock-variable-name-face . 3))
339: (("method" "selector")
340: non-immediate (font-lock-type-face . 1)
341: "[ \t\n]" t name (font-lock-function-name-face . 3))
342: (("end-class" "end-interface")
343: non-immediate (font-lock-keyword-face . 2)
344: "[ \t\n]" t name (font-lock-type-face . 3))
345: (("public" "protected" "class" "exitm" "implementation" "interface"
346: "methods" "end-methods" "this")
347: non-immediate (font-lock-keyword-face . 2))
348: (("object") non-immediate (font-lock-type-face . 2)))
349: "Hilighting description for words of the \"Objects\" package")
350:
351:
352: (defvar forth-use-oof nil
353: "*Non-nil makes forth-mode also hilight words from the \"OOF\" package.")
354: (defvar forth-oof-words
355: '((("class") non-immediate (font-lock-keyword-face . 2)
356: "[ \t\n]" t name (font-lock-type-face . 3))
357: (("var") non-immediate (font-lock-type-face . 2)
358: "[ \t\n]" t name (font-lock-variable-name-face . 3))
359: (("method" "early") non-immediate (font-lock-type-face . 2)
360: "[ \t\n]" t name (font-lock-function-name-face . 3))
361: (("::" "super" "bind" "bound" "link")
362: immediate (font-lock-keyword-face . 2)
363: "[ \t\n]" t name (font-lock-function-name-face . 3))
364: (("ptr" "asptr" "[]")
365: immediate (font-lock-keyword-face . 2)
366: "[ \t\n]" t name (font-lock-variable-name-face . 3))
367: (("class;" "how:" "self" "new" "new[]" "definitions" "class?" "with"
368: "endwith")
369: non-immediate (font-lock-keyword-face . 2))
370: (("object") non-immediate (font-lock-type-face . 2)))
371: "Hilighting description for words of the \"OOF\" package")
372:
373: (defvar forth-local-words nil
374: "List of Forth words to prepend to `forth-words'. Should be set by a
375: forth source, using a local variables list at the end of the file
376: (\"Local Variables: ... forth-local-words: ... End:\" construct).")
377:
378: (defvar forth-custom-words nil
379: "List of Forth words to prepend to `forth-words'. Should be set in your
380: .emacs.")
381:
382: (defvar forth-hilight-level 3 "*Level of hilighting of Forth code.")
383:
384: (defvar forth-compiled-words nil "Compiled representation of `forth-words'.")
385:
386: (defvar forth-indent-words nil
387: "List of words that have indentation behaviour.
388: Each element of `forth-indent-words' should have the form
389: (MATCHER INDENT1 INDENT2 &optional TYPE)
390:
391: MATCHER is either a list of strings to match, or a REGEXP.
392: If it's a REGEXP, it should not be surrounded by `\\<` or `\\>`, since
393: that'll be done automatically by the search routines.
394:
395: TYPE might be omitted. If it's specified, the only allowed value is
396: currently the symbol `non-immediate', meaning that the word will not
397: have any effect on indentation inside definitions. (:NONAME is a good
398: example for this kind of word).
399:
400: INDENT1 specifies how to indent a word that's located at the beginning
401: of a line, following any number of whitespaces.
402:
403: INDENT2 specifies how to indent words that are not located at the
404: beginning of a line.
405:
406: INDENT1 and INDENT2 are indentation specifications of the form
407: (SELF-INDENT . NEXT-INDENT), where SELF-INDENT is a numerical value,
408: specifying how the matching line and all following lines are to be
409: indented, relative to previous lines. NEXT-INDENT specifies how to indent
410: following lines, relative to the matching line.
411:
412: Even values of SELF-INDENT and NEXT-INDENT correspond to multiples of
413: `forth-indent-level'. Odd values get an additional
414: `forth-minor-indent-level' added/substracted. Eg a value of -2 indents
415: 1 * forth-indent-level to the left, wheras 3 indents
416: 1 * forth-indent-level + forth-minor-indent-level columns to the right.")
417:
418: (setq forth-indent-words
419: '((("if" "begin" "do" "?do" "+do" "-do" "u+do"
420: "u-do" "?dup-if" "?dup-0=-if" "case" "of" "try" "iferror"
421: "[if]" "[ifdef]" "[ifundef]" "[begin]" "[for]" "[do]" "[?do]")
422: (0 . 2) (0 . 2))
423: ((":" ":noname" "code" "struct" "m:" ":m" "class" "interface")
424: (0 . 2) (0 . 2) non-immediate)
425: ("\\S-+%$" (0 . 2) (0 . 0) non-immediate)
426: ((";" ";m") (-2 . 0) (0 . -2))
427: (("again" "then" "endif" "endtry" "endcase" "endof"
428: "[then]" "[endif]" "[loop]" "[+loop]" "[next]"
429: "[until]" "[again]" "loop")
430: (-2 . 0) (0 . -2))
431: (("end-code" "end-class" "end-interface" "end-class-noname"
432: "end-interface-noname" "end-struct" "class;")
433: (-2 . 0) (0 . -2) non-immediate)
434: (("protected" "public" "how:") (-1 . 1) (0 . 0) non-immediate)
435: (("+loop" "-loop" "until") (-2 . 0) (-2 . 0))
436: (("else" "recover" "restore" "endtry-iferror" "[else]")
437: (-2 . 2) (0 . 0))
438: (("does>") (-1 . 1) (0 . 0))
439: (("while" "[while]") (-2 . 4) (0 . 2))
440: (("repeat" "[repeat]") (-4 . 0) (0 . -4))))
441:
442: (defvar forth-local-indent-words nil
443: "List of Forth words to prepend to `forth-indent-words', when a forth-mode
444: buffer is created. Should be set by a Forth source, using a local variables
445: list at the end of the file (\"Local Variables: ... forth-local-words: ...
446: End:\" construct).")
447:
448: (defvar forth-custom-indent-words nil
449: "List of Forth words to prepend to `forth-indent-words'. Should be set in
450: your .emacs.")
451:
452: (defvar forth-indent-level 4
453: "*Indentation of Forth statements.")
454: (defvar forth-minor-indent-level 2
455: "*Minor indentation of Forth statements.")
456: (defvar forth-compiled-indent-words nil)
457:
458: ;(setq debug-on-error t)
459:
460: ;; Filter list by predicate. This is a somewhat standard function for
461: ;; functional programming languages. So why isn't it already implemented
462: ;; in Lisp??
463: (defun forth-filter (predicate list)
464: (let ((filtered nil))
465: (dolist (item list)
466: (when (funcall predicate item)
467: (if filtered
468: (nconc filtered (list item))
469: (setq filtered (cons item nil)))))
470: filtered))
471:
472: ;; Helper function for `forth-compile-word': return whether word has to be
473: ;; added to the compiled word list, for syntactic parsing and hilighting.
474: (defun forth-words-filter (word)
475: (let* ((hilight (nth 2 word))
476: (level (cdr hilight))
477: (parsing-flag (nth 3 word)))
478: (or parsing-flag
479: (<= level forth-hilight-level))))
480:
481: ;; Helper function for `forth-compile-word': translate one entry from
482: ;; `forth-words' into the form (regexp regexp-depth word-description)
483: (defun forth-compile-words-mapper (word)
484: ;; warning: we cannot rely on regexp-opt's PAREN argument, since
485: ;; XEmacs will use shy parens by default :-(
486: (let* ((matcher (car word))
487: (regexp
488: (concat "\\(" (cond ((stringp matcher) matcher)
489: ((listp matcher) (regexp-opt matcher))
490: (t (error "Invalid matcher")))
491: "\\)"))
492: (depth (regexp-opt-depth regexp))
493: (description (cdr word)))
494: (list regexp depth description)))
495:
496: ;; Read `words' and create a compiled representation suitable for efficient
497: ;; parsing of the form
498: ;; (regexp (subexp-count word-description) (subexp-count2 word-description2)
499: ;; ...)
500: (defun forth-compile-wordlist (words)
501: (let* ((mapped (mapcar 'forth-compile-words-mapper words))
502: (regexp (concat "\\<\\("
503: (mapconcat 'car mapped "\\|")
504: "\\)\\>"))
505: (sub-count 2)
506: (sub-list (mapcar
507: (lambda (i)
508: (let ((sub (cons sub-count (nth 2 i))))
509: (setq sub-count (+ sub-count (nth 1 i)))
510: sub
511: ))
512: mapped)))
513: (let ((result (cons regexp sub-list)))
514: (byte-compile 'result)
515: result)))
516:
517: (defun forth-compile-words ()
518: "Compile the the words from `forth-words' and `forth-indent-words' into
519: the format that's later used for doing the actual hilighting/indentation.
520: Store the resulting compiled wordlists in `forth-compiled-words' and
521: `forth-compiled-indent-words', respective"
522: (setq forth-compiled-words
523: (forth-compile-wordlist
524: (forth-filter 'forth-words-filter forth-words)))
525: (setq forth-compiled-indent-words
526: (forth-compile-wordlist forth-indent-words)))
527:
528: (defun forth-hack-local-variables ()
529: "Parse and bind local variables, set in the contents of the current
530: forth-mode buffer. Prepend `forth-local-words' to `forth-words' and
531: `forth-local-indent-words' to `forth-indent-words'."
532: (hack-local-variables)
533: (setq forth-words (append forth-local-words forth-words))
534: (setq forth-indent-words (append forth-local-indent-words
535: forth-indent-words)))
536:
537: (defun forth-customize-words ()
538: "Add the words from `forth-custom-words' and `forth-custom-indent-words'
539: to `forth-words' and `forth-indent-words', respective. Add
540: `forth-objects-words' and/or `forth-oof-words' to `forth-words', if
541: `forth-use-objects' and/or `forth-use-oof', respective is set."
542: (setq forth-words (append forth-custom-words forth-words
543: (if forth-use-oof forth-oof-words nil)
544: (if forth-use-objects forth-objects-words nil)))
545: (setq forth-indent-words (append
546: forth-custom-indent-words forth-indent-words)))
547:
548:
549:
550: ;; get location of first character of previous forth word that's got
551: ;; properties
552: (defun forth-previous-start (pos)
553: (let* ((word (get-text-property pos 'forth-word))
554: (prev (previous-single-property-change
555: (min (point-max) (1+ pos)) 'forth-word
556: (current-buffer) (point-min))))
557: (if (or (= (point-min) prev) word) prev
558: (if (get-text-property (1- prev) 'forth-word)
559: (previous-single-property-change
560: prev 'forth-word (current-buffer) (point-min))
561: (point-min)))))
562:
563: ;; Get location of the last character of the current/next forth word that's
564: ;; got properties, text that's parsed by the word is considered as parts of
565: ;; the word.
566: (defun forth-next-end (pos)
567: (let* ((word (get-text-property pos 'forth-word))
568: (next (next-single-property-change pos 'forth-word
569: (current-buffer) (point-max))))
570: (if word next
571: (if (get-text-property next 'forth-word)
572: (next-single-property-change
573: next 'forth-word (current-buffer) (point-max))
574: (point-max)))))
575:
576: (defun forth-next-whitespace (pos)
577: (save-excursion
578: (goto-char pos)
579: (skip-syntax-forward "-" (point-max))
580: (point)))
581: (defun forth-previous-word (pos)
582: (save-excursion
583: (goto-char pos)
584: (re-search-backward "\\<" pos (point-min) 1)
585: (point)))
586:
587: ;; Delete all properties, used by Forth mode, from `from' to `to'.
588: (defun forth-delete-properties (from to)
589: (remove-text-properties
590: from to '(face nil fontified nil
591: forth-parsed nil forth-word nil forth-state nil)))
592:
593: ;; Get the index of the branch of the most recently evaluated regular
594: ;; expression that matched. (used for identifying branches "a\\|b\\|c...")
595: (defun forth-get-regexp-branch ()
596: (let ((count 2))
597: (while (not (condition-case err (match-beginning count)
598: (args-out-of-range t))) ; XEmacs requires error handling
599: (setq count (1+ count)))
600: count))
601:
602: ;; seek to next forth-word and return its "word-description"
603: (defun forth-next-known-forth-word (to)
604: (if (<= (point) to)
605: (progn
606: (let* ((regexp (car forth-compiled-words))
607: (pos (re-search-forward regexp to t)))
608: (if pos (let ((branch (forth-get-regexp-branch))
609: (descr (cdr forth-compiled-words)))
610: (goto-char (match-beginning 0))
611: (cdr (assoc branch descr)))
612: 'nil)))
613: nil))
614:
615: ;; Set properties of forth word at `point', eventually parsing subsequent
616: ;; words, and parsing all whitespaces. Set point to delimiter after word.
617: ;; The word, including it's parsed text gets the `forth-word' property, whose
618: ;; value is unique, and may be used for getting the word's start/end
619: ;; positions.
620: (defun forth-set-word-properties (state data)
621: (let* ((start (point))
622: (end (progn (re-search-forward "[ \t]\\|$" (point-max) 1)
623: (point)))
624: (type (car data))
625: (hilight (nth 1 data))
626: (bad-word (and (not state) (eq type 'compile-only)))
627: (hlface (if bad-word font-lock-warning-face
628: (if (<= (cdr hilight) forth-hilight-level)
629: (car hilight) nil))))
630: (when hlface (put-text-property start end 'face hlface))
631: ;; if word parses in current state, process parsed range of text
632: (when (or (not state) (eq type 'compile-only) (eq type 'immediate))
633: (let ((parse-data (nthcdr 2 data)))
634: (while parse-data
635: (let ((delim (nth 0 parse-data))
636: (skip-leading (nth 1 parse-data))
637: (parse-type (nth 2 parse-data))
638: (parsed-hilight (nth 3 parse-data))
639: (parse-start (point))
640: (parse-end))
641: (when skip-leading
642: (while (and (looking-at delim) (> (match-end 0) (point))
643: (not (looking-at "\n")))
644: (forward-char)))
645: (re-search-forward delim (point-max) 1)
646: (setq parse-end (point))
647: (forth-delete-properties end parse-end)
648: (when (<= (cdr parsed-hilight) forth-hilight-level)
649: (put-text-property
650: parse-start parse-end 'face (car parsed-hilight)))
651: (put-text-property
652: parse-start parse-end 'forth-parsed parse-type)
653: (setq end parse-end)
654: (setq parse-data (nthcdr 4 parse-data))))))
655: (put-text-property start end 'forth-word start)))
656:
657: ;; Search for known Forth words in the range `from' to `to', using
658: ;; `forth-next-known-forth-word' and set their properties via
659: ;; `forth-set-word-properties'.
660: (defun forth-update-properties (from to &optional loudly)
661: (save-excursion
662: (let ((msg-count 0) (state) (word-descr) (last-location))
663: (goto-char (forth-previous-word (forth-previous-start
664: (max (point-min) (1- from)))))
665: (setq to (forth-next-end (min (point-max) (1+ to))))
666: ;; `to' must be on a space delimiter, if a parsing word was changed
667: (setq to (forth-next-whitespace to))
668: (setq state (get-text-property (point) 'forth-state))
669: (setq last-location (point))
670: (forth-delete-properties (point) to)
671: (put-text-property (point) to 'fontified t)
672: ;; hilight loop...
673: (while (setq word-descr (forth-next-known-forth-word to))
674: (when loudly
675: (when (equal 0 (% msg-count 100))
676: (message "Parsing Forth code...%s"
677: (make-string (/ msg-count 100) ?.)))
678: (setq msg-count (1+ msg-count)))
679: (forth-set-word-properties state word-descr)
680: (when state (put-text-property last-location (point) 'forth-state t))
681: (let ((type (car word-descr)))
682: (if (eq type 'definition-starter) (setq state t))
683: (if (eq type 'definition-ender) (setq state nil))
684: (setq last-location (point))))
685: ;; update state property up to `to'
686: (if (and state (< (point) to))
687: (put-text-property last-location to 'forth-state t))
688: ;; extend search if following state properties differ from current state
689: (if (< to (point-max))
690: (if (not (equal state (get-text-property (1+ to) 'forth-state)))
691: (let ((extend-to (next-single-property-change
692: to 'forth-state (current-buffer) (point-max))))
693: (forth-update-properties to extend-to))
694: ))
695: )))
696:
697: ;; save-buffer-state borrowed from `font-lock.el'
698: (eval-when-compile
699: (defmacro forth-save-buffer-state (varlist &rest body)
700: "Bind variables according to VARLIST and eval BODY restoring buffer state."
701: `(let* (,@(append varlist
702: '((modified (buffer-modified-p)) (buffer-undo-list t)
703: (inhibit-read-only t) (inhibit-point-motion-hooks t)
704: before-change-functions after-change-functions
705: deactivate-mark buffer-file-name buffer-file-truename)))
706: ,@body
707: (when (and (not modified) (buffer-modified-p))
708: (set-buffer-modified-p nil)))))
709:
710: ;; Function that is added to the `change-functions' hook. Calls
711: ;; `forth-update-properties' and keeps care of disabling undo information
712: ;; and stuff like that.
713: (defun forth-change-function (from to len &optional loudly)
714: (save-match-data
715: (forth-save-buffer-state
716: ()
717: (unless forth-disable-parser (forth-update-properties from to loudly))
718: (forth-update-warn-long-lines))))
719:
720: (defun forth-fontification-function (from)
721: "Function to be called from `fontification-functions' of Emacs 21."
722: (save-match-data
723: (forth-save-buffer-state
724: ((to (min (point-max) (+ from 100))))
725: (unless (or forth-disable-parser (not forth-jit-parser)
726: (get-text-property from 'fontified))
727: (forth-update-properties from to)))))
728:
729: (eval-when-compile
730: (byte-compile 'forth-set-word-properties)
731: (byte-compile 'forth-next-known-forth-word)
732: (byte-compile 'forth-update-properties)
733: (byte-compile 'forth-delete-properties)
734: (byte-compile 'forth-get-regexp-branch))
735:
736: ;;; imenu support
737: ;;;
738: (defvar forth-defining-words
739: '("VARIABLE" "CONSTANT" "2VARIABLE" "2CONSTANT" "FVARIABLE" "FCONSTANT"
740: "USER" "VALUE" "field" "end-struct" "VOCABULARY" "CREATE" ":" "CODE"
741: "DEFER" "ALIAS")
742: "List of words, that define the following word.
743: Used for imenu index generation.")
744:
745: (defvar forth-defining-words-regexp nil
746: "Regexp that's generated for matching `forth-defining-words'")
747:
748: (defun forth-next-definition-starter ()
749: (progn
750: (let* ((pos (re-search-forward forth-defining-words-regexp (point-max) t)))
751: (if pos
752: (if (or (text-property-not-all (match-beginning 0) (match-end 0)
753: 'forth-parsed nil)
754: (text-property-not-all (match-beginning 0) (match-end 0)
755: 'forth-state nil))
756: (forth-next-definition-starter)
757: t)
758: nil))))
759:
760: (defun forth-create-index ()
761: (let* ((forth-defining-words-regexp
762: (concat "\\<\\(" (regexp-opt forth-defining-words) "\\)\\>"))
763: (index nil))
764: (goto-char (point-min))
765: (while (forth-next-definition-starter)
766: (if (looking-at "[ \t]*\\([^ \t\n]+\\)")
767: (setq index (cons (cons (match-string 1) (point)) index))))
768: index))
769:
770: ;; top-level require is executed at byte-compile and load time
771: (eval-and-compile (forth-require 'speedbar))
772:
773: ;; this code is executed at load-time only
774: (when (memq 'speedbar features)
775: (speedbar-add-supported-extension ".fs")
776: (speedbar-add-supported-extension ".fb"))
777:
778: ;; (require 'profile)
779: ;; (setq profile-functions-list '(forth-set-word-properties forth-next-known-forth-word forth-update-properties forth-delete-properties forth-get-regexp-branch))
780:
781: ;;; Indentation
782: ;;;
783:
784: ;; Return, whether `pos' is the first forth word on its line
785: (defun forth-first-word-on-line-p (pos)
786: (save-excursion
787: (beginning-of-line)
788: (skip-chars-forward " \t")
789: (= pos (point))))
790:
791: ;; Return indentation data (SELF-INDENT . NEXT-INDENT) of next known
792: ;; indentation word, or nil if there is no word up to `to'.
793: ;; Position `point' at location just after found word, or at `to'. Parsed
794: ;; ranges of text will not be taken into consideration!
795: (defun forth-next-known-indent-word (to)
796: (if (<= (point) to)
797: (progn
798: (let* ((regexp (car forth-compiled-indent-words))
799: (pos (re-search-forward regexp to t)))
800: (if pos
801: (let* ((start (match-beginning 0))
802: (end (match-end 0))
803: (branch (forth-get-regexp-branch))
804: (descr (cdr forth-compiled-indent-words))
805: (indent (cdr (assoc branch descr)))
806: (type (nth 2 indent)))
807: ;; skip words that are parsed (strings/comments) and
808: ;; non-immediate words inside definitions
809: (if (or (text-property-not-all start end 'forth-parsed nil)
810: (and (eq type 'non-immediate)
811: (text-property-not-all start end
812: 'forth-state nil)))
813: (forth-next-known-indent-word to)
814: (if (forth-first-word-on-line-p (match-beginning 0))
815: (nth 0 indent) (nth 1 indent))))
816: nil)))
817: nil))
818:
819: ;; Translate indentation value `indent' to indentation column. Multiples of
820: ;; 2 correspond to multiples of `forth-indent-level'. Odd numbers get an
821: ;; additional `forth-minor-indent-level' added (or substracted).
822: (defun forth-convert-to-column (indent)
823: (let* ((sign (if (< indent 0) -1 1))
824: (value (abs indent))
825: (major (* (/ value 2) forth-indent-level))
826: (minor (* (% value 2) forth-minor-indent-level)))
827: (* sign (+ major minor))))
828:
829: ;; Return the column increment, that the current line of forth code does to
830: ;; the current or following lines. `which' specifies which indentation values
831: ;; to use. 1 means the indentation of following lines relative to current
832: ;; line, 0 means the indentation of the current line relative to the previous
833: ;; line. Return `nil', if there are no indentation words on the current line.
834: (defun forth-get-column-incr (which)
835: (save-excursion
836: (let ((regexp (car forth-compiled-indent-words))
837: (word-indent)
838: (self-indent nil)
839: (next-indent nil)
840: (to (save-excursion (end-of-line) (point))))
841: (beginning-of-line)
842: (while (setq word-indent (forth-next-known-indent-word to))
843: (let* ((self-incr (car word-indent))
844: (next-incr (cdr word-indent))
845: (self-column-incr (forth-convert-to-column self-incr))
846: (next-column-incr (forth-convert-to-column next-incr)))
847: (setq next-indent (if next-indent next-indent 0))
848: (setq self-indent (if self-indent self-indent 0))
849: (if (or (and (> next-indent 0) (< self-column-incr 0))
850: (and (< next-indent 0) (> self-column-incr 0)))
851: (setq next-indent (+ next-indent self-column-incr))
852: (setq self-indent (+ self-indent self-column-incr)))
853: (setq next-indent (+ next-indent next-column-incr))))
854: (nth which (list self-indent next-indent)))))
855:
856: ;; Find previous line that contains indentation words, return the column,
857: ;; to which following text should be indented to.
858: (defun forth-get-anchor-column ()
859: (save-excursion
860: (if (/= 0 (forward-line -1)) 0
861: (let ((indent))
862: (while (not (or (setq indent (forth-get-column-incr 1))
863: (<= (point) (point-min))))
864: (forward-line -1))
865: (+ (current-indentation) (if indent indent 0))))))
866:
867: (defun forth-indent-line (&optional flag)
868: "Correct indentation of the current Forth line."
869: (let* ((anchor (forth-get-anchor-column))
870: (column-incr (forth-get-column-incr 0)))
871: (forth-indent-to (if column-incr (+ anchor column-incr) anchor))))
872:
873: (defun forth-current-column ()
874: (- (point) (save-excursion (beginning-of-line) (point))))
875: (defun forth-current-indentation ()
876: (- (save-excursion (beginning-of-line) (forward-to-indentation 0) (point))
877: (save-excursion (beginning-of-line) (point))))
878:
879: (defun forth-indent-to (x)
880: (let ((p nil))
881: (setq p (- (forth-current-column) (forth-current-indentation)))
882: (forth-delete-indentation)
883: (beginning-of-line)
884: (indent-to x)
885: (if (> p 0) (forward-char p))))
886:
887: (defun forth-delete-indentation ()
888: (save-excursion
889: (delete-region
890: (progn (beginning-of-line) (point))
891: (progn (back-to-indentation) (point)))))
892:
893: (defun forth-indent-command ()
894: (interactive)
895: (forth-indent-line t))
896:
897: ;; remove trailing whitespaces in current line
898: (defun forth-remove-trailing ()
899: (save-excursion
900: (end-of-line)
901: (delete-region (point) (progn (skip-chars-backward " \t") (point)))))
902:
903: ;; insert newline, removing any trailing whitespaces in the current line
904: (defun forth-newline-remove-trailing ()
905: (save-excursion
906: (delete-region (point) (progn (skip-chars-backward " \t") (point))))
907: (newline))
908: ; (let ((was-point (point-marker)))
909: ; (unwind-protect
910: ; (progn (forward-line -1) (forth-remove-trailing))
911: ; (goto-char (was-point)))))
912:
913: ;; workaround for bug in `reindent-then-newline-and-indent'
914: (defun forth-reindent-then-newline-and-indent ()
915: (interactive "*")
916: (indent-according-to-mode)
917: (forth-newline-remove-trailing)
918: (indent-according-to-mode))
919:
920:
921: ;;; Block file encoding/decoding (dk)
922: ;;;
923:
924: (defconst forth-c/l 64 "Number of characters per block line")
925: (defconst forth-l/b 16 "Number of lines per block")
926:
927: ;; Check whether the unconverted block file line, point is in, does not
928: ;; contain `\n' and `\t' characters.
929: (defun forth-check-block-line (line)
930: (let ((end (save-excursion (beginning-of-line) (forward-char forth-c/l)
931: (point))))
932: (save-excursion
933: (beginning-of-line)
934: (when (search-forward "\n" end t)
935: (message "Warning: line %i contains newline character #10" line)
936: (ding t))
937: (beginning-of-line)
938: (when (search-forward "\t" end t)
939: (message "Warning: line %i contains tab character #8" line)
940: (ding t)))))
941:
942: (defun forth-convert-from-block (from to)
943: "Convert block file format to stream source in current buffer."
944: (let ((line (count-lines (point-min) from)))
945: (save-excursion
946: (goto-char from)
947: (set-mark to)
948: (while (< (+ (point) forth-c/l) (mark t))
949: (setq line (1+ line))
950: (forth-check-block-line line)
951: (forward-char forth-c/l)
952: (forth-newline-remove-trailing))
953: (when (= (+ (point) forth-c/l) (mark t))
954: (forth-remove-trailing))
955: (mark t))))
956:
957: ;; Pad a line of a block file up to `forth-c/l' characters, positioning `point'
958: ;; at the end of line.
959: (defun forth-pad-block-line ()
960: (save-excursion
961: (end-of-line)
962: (if (<= (current-column) forth-c/l)
963: (move-to-column forth-c/l t)
964: (message "Line %i longer than %i characters, truncated"
965: (count-lines (point-min) (point)) forth-c/l)
966: (ding t)
967: (move-to-column forth-c/l t)
968: (delete-region (point) (progn (end-of-line) (point))))))
969:
970: ;; Replace tab characters in current line by spaces.
971: (defun forth-convert-tabs-in-line ()
972: (save-excursion
973: (beginning-of-line)
974: (while (search-forward "\t" (save-excursion (end-of-line) (point)) t)
975: (backward-char)
976: (delete-region (point) (1+ (point)))
977: (insert-char ?\ (- tab-width (% (current-column) tab-width))))))
978:
979: ;; Delete newline at end of current line, concatenating it with the following
980: ;; line. Place `point' at end of newly formed line.
981: (defun forth-delete-newline ()
982: (end-of-line)
983: (delete-region (point) (progn (beginning-of-line 2) (point))))
984:
985: (defun forth-convert-to-block (from to &optional original-buffer)
986: "Convert range of text to block file format in current buffer."
987: (let* ((lines 0)) ; I have to count lines myself, since `count-lines' has
988: ; problems with trailing newlines...
989: (save-excursion
990: (goto-char from)
991: (set-mark to)
992: ;; pad lines to full length (`forth-c/l' characters per line)
993: (while (< (save-excursion (end-of-line) (point)) (mark t))
994: (setq lines (1+ lines))
995: (forth-pad-block-line)
996: (forth-convert-tabs-in-line)
997: (forward-line))
998: ;; also make sure the last line is padded, if `to' is at its end
999: (end-of-line)
1000: (when (= (point) (mark t))
1001: (setq lines (1+ lines))
1002: (forth-pad-block-line)
1003: (forth-convert-tabs-in-line))
1004: ;; remove newlines between lines
1005: (goto-char from)
1006: (while (< (save-excursion (end-of-line) (point)) (mark t))
1007: (forth-delete-newline))
1008: ;; append empty lines, until last block is complete
1009: (goto-char (mark t))
1010: (let* ((required (* (/ (+ lines (1- forth-l/b)) forth-l/b) forth-l/b))
1011: (pad-lines (- required lines)))
1012: (while (> pad-lines 0)
1013: (insert-char ?\ forth-c/l)
1014: (setq pad-lines (1- pad-lines))))
1015: (point))))
1016:
1017: (defun forth-detect-block-file-p ()
1018: "Return non-nil if the current buffer is in block file format. Detection is
1019: done by checking whether the first line has 1024 characters or more."
1020: (save-restriction
1021: (widen)
1022: (save-excursion
1023: (goto-char (point-min))
1024: (end-of-line)
1025: (>= (current-column) 1024))))
1026:
1027: ;; add block file conversion routines to `format-alist'
1028: (defconst forth-block-format-description
1029: '(forth-blocks "Forth block source file" nil
1030: forth-convert-from-block forth-convert-to-block
1031: t normal-mode))
1032: (unless (memq forth-block-format-description format-alist)
1033: (setq format-alist (cons forth-block-format-description format-alist)))
1034:
1035: ;;; End block file encoding/decoding
1036:
1037: ;;; Block file editing
1038: ;;;
1039: (defvar forth-overlay-arrow-string ">>")
1040: (defvar forth-block-base 1 "Number of first block in block file")
1041: (defvar forth-show-screen nil
1042: "Non-nil means to show screen starts and numbers (for block files)")
1043: (defvar forth-warn-long-lines nil
1044: "Non-nil means to warn about lines that are longer than 64 characters")
1045:
1046: (defvar forth-screen-marker nil)
1047: (defvar forth-screen-number-string nil)
1048:
1049: (defun forth-update-show-screen ()
1050: "If `forth-show-screen' is non-nil, put overlay arrow to start of screen,
1051: `point' is in. If arrow now points to different screen than before, display
1052: screen number."
1053: (if (not forth-show-screen)
1054: (setq overlay-arrow-string nil)
1055: (save-excursion
1056: (let* ((line (count-lines (point-min) (min (point-max) (1+ (point)))))
1057: (first-line (1+ (* (/ (1- line) forth-l/b) forth-l/b)))
1058: (scr (+ forth-block-base (/ first-line forth-l/b))))
1059: (setq overlay-arrow-string forth-overlay-arrow-string)
1060: (goto-line first-line)
1061: (setq overlay-arrow-position forth-screen-marker)
1062: (set-marker forth-screen-marker
1063: (save-excursion (goto-line first-line) (point)))
1064: (setq forth-screen-number-string (format "%d" scr))))))
1065:
1066: (add-hook 'forth-motion-hooks 'forth-update-show-screen)
1067:
1068: (defun forth-update-warn-long-lines ()
1069: "If `forth-warn-long-lines' is non-nil, display a warning whenever a line
1070: exceeds 64 characters."
1071: (when forth-warn-long-lines
1072: (when (> (save-excursion (end-of-line) (current-column)) forth-c/l)
1073: (message "Warning: current line exceeds %i characters"
1074: forth-c/l))))
1075:
1076: (add-hook 'forth-motion-hooks 'forth-update-warn-long-lines)
1077:
1078: ;;; End block file editing
1079:
1080:
1081: (defvar forth-mode-abbrev-table nil
1082: "Abbrev table in use in Forth-mode buffers.")
1083:
1084: (define-abbrev-table 'forth-mode-abbrev-table ())
1085:
1086: (defvar forth-mode-map nil
1087: "Keymap used in Forth mode.")
1088:
1089: (if (not forth-mode-map)
1090: (setq forth-mode-map (make-sparse-keymap)))
1091:
1092: ;(define-key forth-mode-map "\M-\C-x" 'compile)
1093: (define-key forth-mode-map "\C-x\\" 'comment-region)
1094: (define-key forth-mode-map "\C-x~" 'forth-remove-tracers)
1095: (define-key forth-mode-map "\C-x\C-m" 'forth-split)
1096: (define-key forth-mode-map "\e " 'forth-reload)
1097: (define-key forth-mode-map "\t" 'forth-indent-command)
1098: (define-key forth-mode-map "\C-m" 'forth-reindent-then-newline-and-indent)
1099: (define-key forth-mode-map "\M-q" 'forth-fill-paragraph)
1100: (define-key forth-mode-map "\e." 'forth-find-tag)
1101:
1102: ;; setup for C-h C-i to work
1103: (eval-and-compile (forth-require 'info-look))
1104: (when (memq 'info-look features)
1105: (defvar forth-info-lookup '(symbol (forth-mode "\\S-+" t
1106: (("(gforth)Word Index"))
1107: "\\S-+")))
1108: (unless (memq forth-info-lookup info-lookup-alist)
1109: (setq info-lookup-alist (cons forth-info-lookup info-lookup-alist)))
1110: ;; in X-Emacs C-h C-i is by default bound to Info-query
1111: (define-key forth-mode-map [?\C-h ?\C-i] 'info-lookup-symbol))
1112:
1113: ;; (info-lookup-add-help
1114: ;; :topic 'symbol
1115: ;; :mode 'forth-mode
1116: ;; :regexp "[^
1117: ;; ]+"
1118: ;; :ignore-case t
1119: ;; :doc-spec '(("(gforth)Name Index" nil "`" "' "))))
1120:
1121: (require 'etags)
1122:
1123: (defun forth-find-tag (tagname &optional next-p regexp-p)
1124: (interactive (find-tag-interactive "Find tag: "))
1125: (unless (or regexp-p next-p)
1126: (setq tagname (concat "\\(^\\|\\s-+\\)\\(" (regexp-quote tagname)
1127: "\\)\\s-*\x7f")))
1128: (switch-to-buffer
1129: (find-tag-noselect tagname next-p t)))
1130:
1131: (defvar forth-mode-syntax-table nil
1132: "Syntax table in use in Forth-mode buffers.")
1133:
1134: ;; Important: hilighting/indentation now depends on a correct syntax table.
1135: ;; All characters, except whitespace *must* belong to the "word constituent"
1136: ;; syntax class. If different behaviour is required, use of Categories might
1137: ;; help.
1138: (if (not forth-mode-syntax-table)
1139: (progn
1140: (setq forth-mode-syntax-table (make-syntax-table))
1141: (let ((char 0))
1142: (while (< char ?!)
1143: (modify-syntax-entry char " " forth-mode-syntax-table)
1144: (setq char (1+ char)))
1145: (while (< char 256)
1146: (modify-syntax-entry char "w" forth-mode-syntax-table)
1147: (setq char (1+ char))))
1148: ))
1149:
1150: (defun forth-mode-variables ()
1151: (set-syntax-table forth-mode-syntax-table)
1152: (setq local-abbrev-table forth-mode-abbrev-table)
1153: (make-local-variable 'paragraph-start)
1154: (setq paragraph-start (concat "^$\\|" page-delimiter))
1155: (make-local-variable 'paragraph-separate)
1156: (setq paragraph-separate paragraph-start)
1157: (make-local-variable 'indent-line-function)
1158: (setq indent-line-function 'forth-indent-line)
1159: ; (make-local-variable 'require-final-newline)
1160: ; (setq require-final-newline t)
1161: (make-local-variable 'comment-start)
1162: (setq comment-start "\\ ")
1163: ;(make-local-variable 'comment-end)
1164: ;(setq comment-end " )")
1165: (make-local-variable 'comment-column)
1166: (setq comment-column 40)
1167: (make-local-variable 'comment-start-skip)
1168: (setq comment-start-skip "\\\\ ")
1169: (make-local-variable 'comment-indent-function)
1170: (setq comment-indent-function 'forth-comment-indent)
1171: (make-local-variable 'parse-sexp-ignore-comments)
1172: (setq parse-sexp-ignore-comments t)
1173: (setq case-fold-search t)
1174: (make-local-variable 'forth-was-point)
1175: (setq forth-was-point -1)
1176: (make-local-variable 'forth-words)
1177: (make-local-variable 'forth-compiled-words)
1178: (make-local-variable 'forth-compiled-indent-words)
1179: (make-local-variable 'forth-hilight-level)
1180: (make-local-variable 'after-change-functions)
1181: (make-local-variable 'forth-show-screen)
1182: (make-local-variable 'forth-screen-marker)
1183: (make-local-variable 'forth-warn-long-lines)
1184: (make-local-variable 'forth-screen-number-string)
1185: (make-local-variable 'forth-use-oof)
1186: (make-local-variable 'forth-use-objects)
1187: (setq forth-screen-marker (copy-marker 0))
1188: (add-hook 'after-change-functions 'forth-change-function)
1189: (if (and forth-jit-parser (>= emacs-major-version 21))
1190: (add-hook 'fontification-functions 'forth-fontification-function))
1191: (setq imenu-create-index-function 'forth-create-index))
1192:
1193: ;;;###autoload
1194: (defun forth-mode ()
1195: "
1196: Major mode for editing Forth code. Tab indents for Forth code. Comments
1197: are delimited with \\ and newline. Paragraphs are separated by blank lines
1198: only. Block files are autodetected, when read, and converted to normal
1199: stream source format. See also `forth-block-mode'.
1200: \\{forth-mode-map}
1201:
1202: Variables controlling syntax hilighting/recognition of parsed text:
1203: `forth-words'
1204: List of words that have a special parsing behaviour and/or should be
1205: hilighted. Add custom words by setting forth-custom-words in your
1206: .emacs, or by setting forth-local-words, in source-files' local
1207: variables lists.
1208: forth-use-objects
1209: Set this variable to non-nil in your .emacs, or in a local variables
1210: list, to hilight and recognize the words from the \"Objects\" package
1211: for object-oriented programming.
1212: forth-use-oof
1213: Same as above, just for the \"OOF\" package.
1214: forth-custom-words
1215: List of custom Forth words to prepend to `forth-words'. Should be set
1216: in your .emacs.
1217: forth-local-words
1218: List of words to prepend to `forth-words', whenever a forth-mode
1219: buffer is created. That variable should be set by Forth sources, using
1220: a local variables list at the end of file, to get file-specific
1221: hilighting.
1222: 0 [IF]
1223: Local Variables: ...
1224: forth-local-words: ...
1225: End:
1226: [THEN]
1227: forth-hilight-level
1228: Controls how much syntax hilighting is done. Should be in the range
1229: 0..3
1230:
1231: Variables controlling indentation style:
1232: `forth-indent-words'
1233: List of words that influence indentation.
1234: forth-local-indent-words
1235: List of words to prepend to `forth-indent-words', similar to
1236: forth-local-words. Should be used for specifying file-specific
1237: indentation, using a local variables list.
1238: forth-custom-indent-words
1239: List of words to prepend to `forth-indent-words'. Should be set in your
1240: .emacs.
1241: forth-indent-level
1242: Indentation increment/decrement of Forth statements.
1243: forth-minor-indent-level
1244: Minor indentation increment/decrement of Forth statemens.
1245:
1246: Variables controlling block-file editing:
1247: forth-show-screen
1248: Non-nil means, that the start of the current screen is marked by an
1249: overlay arrow, and screen numbers are displayed in the mode line.
1250: This variable is by default nil for `forth-mode' and t for
1251: `forth-block-mode'.
1252: forth-overlay-arrow-string
1253: String to display as the overlay arrow, when `forth-show-screen' is t.
1254: Setting this variable to nil disables the overlay arrow.
1255: forth-block-base
1256: Screen number of the first block in a block file. Defaults to 1.
1257: forth-warn-long-lines
1258: Non-nil means that a warning message is displayed whenever you edit or
1259: move over a line that is longer than 64 characters (the maximum line
1260: length that can be stored into a block file). This variable defaults to
1261: t for `forth-block-mode' and to nil for `forth-mode'.
1262:
1263: Variables controlling interaction with the Forth-process (also see
1264: `run-forth'):
1265: forth-program-name
1266: Program invoked by the `run-forth' command (including arguments).
1267: inferior-forth-mode-hook
1268: Hook for customising inferior-forth-mode.
1269: forth-compile-command
1270: Default command to execute on `compile'.
1271: "
1272: (interactive)
1273: (kill-all-local-variables)
1274: (use-local-map forth-mode-map)
1275: (setq mode-name "Forth")
1276: (setq major-mode 'forth-mode)
1277: (forth-install-motion-hook)
1278: ;; convert buffer contents from block file format, if necessary
1279: (when (forth-detect-block-file-p)
1280: (widen)
1281: (message "Converting from Forth block source...")
1282: (forth-convert-from-block (point-min) (point-max))
1283: (message "Converting from Forth block source...done"))
1284: ;; if user switched from forth-block-mode to forth-mode, make sure the file
1285: ;; is now stored as normal strem source
1286: (when (equal buffer-file-format '(forth-blocks))
1287: (setq buffer-file-format nil))
1288: (forth-mode-variables)
1289: ; (if (not (forth-process-running-p))
1290: ; (run-forth forth-program-name))
1291: (run-hooks 'forth-mode-hook))
1292:
1293: ;;;###autoload
1294: (define-derived-mode forth-block-mode forth-mode "Forth Block Source"
1295: "Major mode for editing Forth block source files, derived from
1296: `forth-mode'. Differences to `forth-mode' are:
1297: * files are converted to block format, when written (`buffer-file-format'
1298: is set to `(forth-blocks)')
1299: * `forth-show-screen' and `forth-warn-long-lines' are t by default
1300:
1301: Note that the length of lines in block files is limited to 64 characters.
1302: When writing longer lines to a block file, a warning is displayed in the
1303: echo area and the line is truncated.
1304:
1305: Another problem is imposed by block files that contain newline or tab
1306: characters. When Emacs converts such files back to block file format,
1307: it'll translate those characters to a number of spaces. However, when
1308: you read such a file, a warning message is displayed in the echo area,
1309: including a line number that may help you to locate and fix the problem.
1310:
1311: So have a look at the *Messages* buffer, whenever you hear (or see) Emacs'
1312: bell during block file read/write operations."
1313: (setq buffer-file-format '(forth-blocks))
1314: (setq forth-show-screen t)
1315: (setq forth-warn-long-lines t)
1316: (setq forth-screen-number-string (format "%d" forth-block-base))
1317: (setq mode-line-format (append (reverse (cdr (reverse mode-line-format)))
1318: '("--S" forth-screen-number-string "-%-"))))
1319:
1320: (add-hook 'forth-mode-hook
1321: '(lambda ()
1322: (make-local-variable 'compile-command)
1323: (setq compile-command "gforth ")
1324: (forth-hack-local-variables)
1325: (forth-customize-words)
1326: (forth-compile-words)
1327: (unless (and forth-jit-parser (>= emacs-major-version 21))
1328: (forth-change-function (point-min) (point-max) nil t))))
1329:
1330: (defun forth-fill-paragraph ()
1331: "Fill comments (starting with '\'; do not fill code (block style
1332: programmers who tend to fill code won't use emacs anyway:-)."
1333: ; Currently only comments at the start of the line are filled.
1334: ; Something like lisp-fill-paragraph may be better. We cannot use
1335: ; fill-paragraph, because it removes the \ from the first comment
1336: ; line. Therefore we have to look for the first line of the comment
1337: ; and use fill-region.
1338: (interactive)
1339: (save-excursion
1340: (beginning-of-line)
1341: (while (and
1342: (= (forward-line -1) 0)
1343: (looking-at "[ \t]*\\\\g?[ \t]+")))
1344: (if (not (looking-at "[ \t]*\\\\g?[ \t]+"))
1345: (forward-line 1))
1346: (let ((from (point))
1347: (to (save-excursion (forward-paragraph) (point))))
1348: (if (looking-at "[ \t]*\\\\g?[ \t]+")
1349: (progn (goto-char (match-end 0))
1350: (set-fill-prefix)
1351: (fill-region from to nil))))))
1352:
1353: (defun forth-comment-indent ()
1354: (save-excursion
1355: (beginning-of-line)
1356: (if (looking-at ":[ \t]*")
1357: (progn
1358: (end-of-line)
1359: (skip-chars-backward " \t\n")
1360: (1+ (current-column)))
1361: comment-column)))
1362:
1363:
1364: ;; Forth commands
1365:
1366: (defun forth-remove-tracers ()
1367: "Remove tracers of the form `~~ '. Queries the user for each occurrence."
1368: (interactive)
1369: (query-replace-regexp "\\(~~ \\| ~~$\\)" "" nil))
1370:
1371: (define-key forth-mode-map "\C-x\C-e" 'compile)
1372: (define-key forth-mode-map "\C-x\C-n" 'next-error)
1373: (require 'compile)
1374:
1375: (defvar forth-compile-command "gforth ")
1376: ;(defvar forth-compilation-window-percent-height 30)
1377:
1378: (defun forth-split ()
1379: (interactive)
1380: (forth-split-1 "*forth*"))
1381:
1382: (defun forth-split-1 (buffer)
1383: (if (not (eq (window-buffer) (get-buffer buffer)))
1384: (progn
1385: (delete-other-windows)
1386: (split-window-vertically
1387: (/ (frame-height) 2))
1388: (other-window 1)
1389: (switch-to-buffer buffer)
1390: (goto-char (point-max))
1391: (other-window 1))))
1392:
1393: ;;; Forth menu
1394: ;;; Mikael Karlsson <qramika@eras70.ericsson.se>
1395:
1396: ;; (dk) code commented out due to complaints of XEmacs users. After
1397: ;; all, there's imenu/speedbar, which uses much smarter scanning
1398: ;; rules.
1399:
1400: ;; (cond ((string-match "XEmacs\\|Lucid" emacs-version)
1401: ;; (require 'func-menu)
1402:
1403: ;; (defconst fume-function-name-regexp-forth
1404: ;; "^\\(:\\)[ \t]+\\([^ \t]*\\)"
1405: ;; "Expression to get word definitions in Forth.")
1406:
1407: ;; (setq fume-function-name-regexp-alist
1408: ;; (append '((forth-mode . fume-function-name-regexp-forth)
1409: ;; ) fume-function-name-regexp-alist))
1410:
1411: ;; ;; Find next forth word in the buffer
1412: ;; (defun fume-find-next-forth-function-name (buffer)
1413: ;; "Searches for the next forth word in BUFFER."
1414: ;; (set-buffer buffer)
1415: ;; (if (re-search-forward fume-function-name-regexp nil t)
1416: ;; (let ((beg (match-beginning 2))
1417: ;; (end (match-end 2)))
1418: ;; (cons (buffer-substring beg end) beg))))
1419:
1420: ;; (setq fume-find-function-name-method-alist
1421: ;; (append '((forth-mode . fume-find-next-forth-function-name))))
1422:
1423: ;; ))
1424: ;;; End Forth menu
1425:
1426: ;;; File folding of forth-files
1427: ;;; uses outline
1428: ;;; Toggle activation with M-x fold-f (when editing a forth-file)
1429: ;;; Use f9 to expand, f10 to hide, Or the menubar in xemacs
1430: ;;;
1431: ;;; Works most of the times but loses sync with the cursor occasionally
1432: ;;; Could be improved by also folding on comments
1433:
1434: ;; (dk) This code needs a rewrite; just too ugly and doesn't use the
1435: ;; newer and smarter scanning rules of `imenu'. Who needs it anyway??
1436:
1437: ;; (require 'outline)
1438:
1439: ;; (defun f-outline-level ()
1440: ;; (cond ((looking-at "\\`\\\\")
1441: ;; 0)
1442: ;; ((looking-at "\\\\ SEC")
1443: ;; 0)
1444: ;; ((looking-at "\\\\ \\\\ .*")
1445: ;; 0)
1446: ;; ((looking-at "\\\\ DEFS")
1447: ;; 1)
1448: ;; ((looking-at "\\/\\* ")
1449: ;; 1)
1450: ;; ((looking-at ": .*")
1451: ;; 1)
1452: ;; ((looking-at "\\\\G")
1453: ;; 2)
1454: ;; ((looking-at "[ \t]+\\\\")
1455: ;; 3)))
1456:
1457: ;; (defun fold-f ()
1458: ;; (interactive)
1459: ;; (add-hook 'outline-minor-mode-hook 'hide-body)
1460:
1461: ;; ; outline mode header start, i.e. find word definitions
1462: ;; ;;; (setq outline-regexp "^\\(:\\)[ \t]+\\([^ \t]*\\)")
1463: ;; (setq outline-regexp "\\`\\\\\\|:\\|\\\\ SEC\\|\\\\G\\|[ \t]+\\\\\\|\\\\ DEFS\\|\\/\\*\\|\\\\ \\\\ .*")
1464: ;; (setq outline-level 'f-outline-level)
1465:
1466: ;; (outline-minor-mode)
1467: ;; (define-key outline-minor-mode-map '(shift up) 'hide-sublevels)
1468: ;; (define-key outline-minor-mode-map '(shift right) 'show-children)
1469: ;; (define-key outline-minor-mode-map '(shift left) 'hide-subtree)
1470: ;; (define-key outline-minor-mode-map '(shift down) 'show-subtree))
1471:
1472:
1473: ;;(define-key global-map '(shift up) 'fold-f)
1474:
1475: ;;; end file folding
1476:
1477: ;;; func-menu is a package that scans your source file for function definitions
1478: ;;; and makes a menubar entry that lets you jump to any particular function
1479: ;;; definition by selecting it from the menu. The following code turns this on
1480: ;;; for all of the recognized languages. Scanning the buffer takes some time,
1481: ;;; but not much.
1482: ;;;
1483: ;; (cond ((string-match "XEmacs\\|Lucid" emacs-version)
1484: ;; (require 'func-menu)
1485: ;; ;; (define-key global-map 'f8 'function-menu)
1486: ;; (add-hook 'find-fible-hooks 'fume-add-menubar-entry)
1487: ;; ; (define-key global-map "\C-cg" 'fume-prompt-function-goto)
1488: ;; ; (define-key global-map '(shift button3) 'mouse-function-menu)
1489: ;; ))
1490:
1491: ;;;
1492: ;;; Inferior Forth interpreter
1493: ;;; -- mostly copied from `cmuscheme.el' of Emacs 21.2
1494: ;;;
1495:
1496: (eval-and-compile (forth-require 'comint))
1497:
1498: (when (memq 'comint features)
1499:
1500: (defvar forth-program-name "gforth"
1501: "*Program invoked by the `run-forth' command, including program arguments")
1502:
1503: (defcustom inferior-forth-mode-hook nil
1504: "*Hook for customising inferior-forth-mode."
1505: :type 'hook
1506: :group 'forth)
1507:
1508: (defvar inferior-forth-mode-map
1509: (let ((m (make-sparse-keymap)))
1510: (define-key m "\r" 'comint-send-input)
1511: (define-key m "\M-\C-x" 'forth-send-paragraph-and-go)
1512: (define-key m "\C-c\C-l" 'forth-load-file)
1513: m))
1514: ;; Install the process communication commands in the forth-mode keymap.
1515: (define-key forth-mode-map "\e\C-m" 'forth-send-paragraph-and-go)
1516: (define-key forth-mode-map "\eo" 'forth-send-buffer-and-go)
1517:
1518: (define-key forth-mode-map "\M-\C-x" 'forth-send-paragraph-and-go)
1519: (define-key forth-mode-map "\C-c\C-r" 'forth-send-region)
1520: (define-key forth-mode-map "\C-c\M-r" 'forth-send-region-and-go)
1521: (define-key forth-mode-map "\C-c\C-z" 'forth-switch-to-interactive)
1522: (define-key forth-mode-map "\C-c\C-l" 'forth-load-file)
1523:
1524: (defvar forth-process-buffer)
1525:
1526: (define-derived-mode inferior-forth-mode comint-mode "Inferior Forth"
1527: "Major mode for interacting with an inferior Forth process.
1528:
1529: The following commands are available:
1530: \\{inferior-forth-mode-map}
1531:
1532: A Forth process can be fired up with M-x run-forth.
1533:
1534: Customisation: Entry to this mode runs the hooks on comint-mode-hook and
1535: inferior-forth-mode-hook (in that order).
1536:
1537: You can send text to the inferior Forth process from other buffers containing
1538: Forth source.
1539: forth-switch-to-interactive switches the current buffer to the Forth
1540: process buffer.
1541: forth-send-paragraph sends the current paragraph to the Forth process.
1542: forth-send-region sends the current region to the Forth process.
1543: forth-send-buffer sends the current buffer to the Forth process.
1544:
1545: forth-send-paragraph-and-go, forth-send-region-and-go,
1546: forth-send-buffer-and-go switch to the Forth process buffer after
1547: sending their text.
1548: For information on running multiple processes in multiple buffers, see
1549: documentation for variable `forth-process-buffer'.
1550:
1551: Commands:
1552: Return after the end of the process' output sends the text from the
1553: end of process to point. If you accidentally suspend your process, use
1554: \\[comint-continue-subjob] to continue it. "
1555: ;; Customise in inferior-forth-mode-hook
1556: (setq comint-prompt-regexp "^")
1557: (setq mode-line-process '(":%s")))
1558:
1559: (defun forth-args-to-list (string)
1560: (let ((where (string-match "[ \t]" string)))
1561: (cond ((null where) (list string))
1562: ((not (= where 0))
1563: (cons (substring string 0 where)
1564: (forth-args-to-list (substring string (+ 1 where)
1565: (length string)))))
1566: (t (let ((pos (string-match "[^ \t]" string)))
1567: (if (null pos)
1568: nil
1569: (forth-args-to-list (substring string pos
1570: (length string)))))))))
1571:
1572: ;;;###autoload
1573: (defun run-forth (cmd)
1574: "Run an inferior Forth process, input and output via buffer *forth*.
1575: If there is a process already running in `*forth*', switch to that buffer.
1576: With argument, allows you to edit the command line (default is value
1577: of `forth-program-name'). Runs the hooks `inferior-forth-mode-hook'
1578: \(after the `comint-mode-hook' is run).
1579: \(Type \\[describe-mode] in the process buffer for a list of commands.)"
1580:
1581: (interactive (list (if current-prefix-arg
1582: (read-string "Run Forth: " forth-program-name)
1583: forth-program-name)))
1584: (if (not (comint-check-proc "*forth*"))
1585: (let ((cmdlist (forth-args-to-list cmd)))
1586: (set-buffer (apply 'make-comint "forth" (car cmdlist)
1587: nil (cdr cmdlist)))
1588: (inferior-forth-mode)))
1589: (setq forth-program-name cmd)
1590: (setq forth-process-buffer "*forth*")
1591: (pop-to-buffer "*forth*"))
1592:
1593: (defun forth-send-region (start end)
1594: "Send the current region to the inferior Forth process."
1595: (interactive "r")
1596: (comint-send-region (forth-proc) start end)
1597: (comint-send-string (forth-proc) "\n"))
1598:
1599: (defun forth-end-of-paragraph ()
1600: (if (looking-at "[\t\n ]+") (skip-chars-backward "\t\n "))
1601: (if (not (re-search-forward "\n[ \t]*\n" nil t))
1602: (goto-char (point-max))))
1603:
1604: (defun forth-send-paragraph ()
1605: "Send the current or the previous paragraph to the Forth process"
1606: (interactive)
1607: (let (end)
1608: (save-excursion
1609: (forth-end-of-paragraph)
1610: (skip-chars-backward "\t\n ")
1611: (setq end (point))
1612: (if (null (re-search-backward "\n[ \t]*\n" nil t))
1613: (goto-char (point-min)))
1614: (skip-chars-forward "\t\n ")
1615: (forth-send-region (point) end))))
1616:
1617: (defun forth-send-paragraph-and-go ()
1618: "Send the current or the previous paragraph to the Forth process.
1619: Then switch to the process buffer."
1620: (interactive)
1621: (forth-send-paragraph)
1622: (forth-switch-to-interactive t))
1623:
1624: (defun forth-send-buffer ()
1625: "Send the current buffer to the Forth process."
1626: (interactive)
1627: (if (eq (current-buffer) forth-process-buffer)
1628: (error "Not allowed to send this buffer's contents to Forth"))
1629: (forth-send-region (point-min) (point-max)))
1630:
1631: (defun forth-send-buffer-and-go ()
1632: "Send the current buffer to the Forth process.
1633: Then switch to the process buffer."
1634: (interactive)
1635: (forth-send-buffer)
1636: (forth-switch-to-interactive t))
1637:
1638:
1639: (defun forth-switch-to-interactive (eob-p)
1640: "Switch to the Forth process buffer.
1641: With argument, position cursor at end of buffer."
1642: (interactive "P")
1643: (if (get-buffer forth-process-buffer)
1644: (pop-to-buffer forth-process-buffer)
1645: (error "No current process buffer. See variable `forth-process-buffer'"))
1646: (cond (eob-p
1647: (push-mark)
1648: (goto-char (point-max)))))
1649:
1650: (defun forth-send-region-and-go (my-start end)
1651: "Send the current region to the inferior Forth process.
1652: Then switch to the process buffer."
1653: (interactive "r")
1654: (forth-send-region my-start end)
1655: (forth-switch-to-interactive t))
1656:
1657: (defcustom forth-source-modes '(forth-mode forth-block-mode)
1658: "*Used to determine if a buffer contains Forth source code.
1659: If it's loaded into a buffer that is in one of these major modes, it's
1660: considered a Forth source file by `forth-load-file' and `forth-compile-file'.
1661: Used by these commands to determine defaults."
1662: :type '(repeat function)
1663: :group 'forth)
1664:
1665: (defvar forth-prev-l/c-dir/file nil
1666: "Caches the last (directory . file) pair.
1667: Caches the last pair used in the last `forth-load-file' or
1668: `forth-compile-file' command. Used for determining the default in the
1669: next one.")
1670:
1671: (defun forth-load-file (file-name)
1672: "Load a Forth file FILE-NAME into the inferior Forth process."
1673: (interactive (comint-get-source "Load Forth file: " forth-prev-l/c-dir/file
1674: forth-source-modes t)) ; T because LOAD
1675: ; needs an exact name
1676: (comint-check-source file-name) ; Check to see if buffer needs saved.
1677: (setq forth-prev-l/c-dir/file (cons (file-name-directory file-name)
1678: (file-name-nondirectory file-name)))
1679: (comint-send-string (forth-proc)
1680: (concat "s\" " file-name "\" included\n")))
1681:
1682:
1683: (defvar forth-process-buffer nil "*The current Forth process buffer.
1684:
1685: See `scheme-buffer' for an explanation on how to run multiple Forth
1686: processes.")
1687:
1688: (defun forth-proc ()
1689: "Return the current Forth process. See variable `forth-process-buffer'."
1690: (let ((proc (get-buffer-process (if (eq major-mode 'inferior-forth-mode)
1691: (current-buffer)
1692: forth-process-buffer))))
1693: (or proc
1694: (error "No current process. See variable `forth-process-buffer'"))))
1695: ) ; (memq 'comint features)
1696:
1697: (provide 'forth-mode)
1698:
1699: ;;; gforth.el ends here
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