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: (("code" "abi-code")
251: non-immediate (font-lock-keyword-face . 1)
252: "[ \t\n]" t name (font-lock-function-name-face . 3))
253: (("end-code")
254: non-immediate (font-lock-keyword-face . 1))
255: (("[char]") compile-only (font-lock-keyword-face . 1)
256: "[ \t\n]" t string (font-lock-string-face . 1))
257: (("char") non-immediate (font-lock-keyword-face . 1)
258: "[ \t\n]" t string (font-lock-string-face . 1))
259: (("s\"" "c\"") immediate (font-lock-string-face . 1)
260: "[\"\n]" nil string (font-lock-string-face . 1))
261: ((".\"") compile-only (font-lock-string-face . 1)
262: "[\"\n]" nil string (font-lock-string-face . 1))
263: (("abort\"") compile-only (font-lock-keyword-face . 1)
264: "[\"\n]" nil string (font-lock-string-face . 1))
265: (("{") compile-only (font-lock-variable-name-face . 1)
266: "[\n}]" nil name (font-lock-variable-name-face . 1))
267: ((".(" "(") immediate (font-lock-comment-face . 1)
268: ")" nil comment (font-lock-comment-face . 1))
269: (("\\" "\\G") immediate (font-lock-comment-face . 1)
270: "[\n]" nil comment (font-lock-comment-face . 1))
271:
272: (("[if]" "[?do]" "[do]" "[for]" "[begin]"
273: "[endif]" "[then]" "[loop]" "[+loop]" "[next]" "[until]" "[repeat]"
274: "[again]" "[while]" "[else]")
275: immediate (font-lock-keyword-face . 2))
276: (("[ifdef]" "[ifundef]") immediate (font-lock-keyword-face . 2)
277: "[ \t\n]" t name (font-lock-function-name-face . 3))
278: (("if" "begin" "ahead" "do" "?do" "+do" "u+do" "-do" "u-do" "for"
279: "case" "of" "?dup-if" "?dup-0=-if" "then" "endif" "until"
280: "repeat" "again" "leave" "?leave"
281: "loop" "+loop" "-loop" "next" "endcase" "endof" "else" "while" "try"
282: "recover" "endtry" "iferror" "restore" "endtry-iferror"
283: "assert(" "assert0(" "assert1(" "assert2("
284: "assert3(" ")" "<interpretation" "<compilation" "interpretation>"
285: "compilation>")
286: compile-only (font-lock-keyword-face . 2))
287:
288: (("true" "false" "c/l" "bl" "cell" "pi" "w/o" "r/o" "r/w")
289: non-immediate (font-lock-constant-face . 2))
290: (("~~" "break:" "dbg") compile-only (font-lock-warning-face . 2))
291: (("break\"") compile-only (font-lock-warning-face . 1)
292: "[\"\n]" nil string (font-lock-string-face . 1))
293: (("postpone" "[is]" "defers" "[']" "[compile]")
294: compile-only (font-lock-keyword-face . 2)
295: "[ \t\n]" t name (font-lock-function-name-face . 3))
296: (("is" "what's") immediate (font-lock-keyword-face . 2)
297: "[ \t\n]" t name (font-lock-function-name-face . 3))
298: (("<is>" "'" "see") non-immediate (font-lock-keyword-face . 2)
299: "[ \t\n]" t name (font-lock-function-name-face . 3))
300: (("[to]") compile-only (font-lock-keyword-face . 2)
301: "[ \t\n]" t name (font-lock-variable-name-face . 3))
302: (("to") immediate (font-lock-keyword-face . 2)
303: "[ \t\n]" t name (font-lock-variable-name-face . 3))
304: (("<to>") non-immediate (font-lock-keyword-face . 2)
305: "[ \t\n]" t name (font-lock-variable-name-face . 3))
306:
307: (("create" "variable" "constant" "2variable" "2constant" "fvariable"
308: "fconstant" "value" "field" "user" "vocabulary"
309: "create-interpret/compile")
310: non-immediate (font-lock-type-face . 2)
311: "[ \t\n]" t name (font-lock-variable-name-face . 3))
312: ("\\S-+%" non-immediate (font-lock-type-face . 2))
313: (("defer" "alias" "create-interpret/compile:")
314: non-immediate (font-lock-type-face . 1)
315: "[ \t\n]" t name (font-lock-function-name-face . 3))
316: (("end-struct") non-immediate (font-lock-keyword-face . 2)
317: "[ \t\n]" t name (font-lock-type-face . 3))
318: (("struct") non-immediate (font-lock-keyword-face . 2))
319: ("-?[0-9]+\\(\\.[0-9]*e\\(-?[0-9]+\\)?\\|\\.?[0-9a-f]*\\)"
320: immediate (font-lock-constant-face . 3))
321: ("-?\\([&#][0-9]+\\|\\(0x\\|\\$\\)[0-9a-f]+\\|%[01]+\\)"
322: immediate (font-lock-constant-face . 3))
323: ))
324:
325: (defvar forth-use-objects nil
326: "*Non-nil makes forth-mode also hilight words from the \"Objects\" package.")
327: (defvar forth-objects-words
328: '(((":m") definition-starter (font-lock-keyword-face . 1)
329: "[ \t\n]" t name (font-lock-function-name-face . 3))
330: (("m:") definition-starter (font-lock-keyword-face . 1))
331: ((";m") definition-ender (font-lock-keyword-face . 1))
332: (("[current]" "[parent]") compile-only (font-lock-keyword-face . 1)
333: "[ \t\n]" t name (font-lock-function-name-face . 3))
334: (("current" "overrides") non-immediate (font-lock-keyword-face . 2)
335: "[ \t\n]" t name (font-lock-function-name-face . 3))
336: (("[to-inst]") compile-only (font-lock-keyword-face . 2)
337: "[ \t\n]" t name (font-lock-variable-name-face . 3))
338: (("[bind]") compile-only (font-lock-keyword-face . 2)
339: "[ \t\n]" t name (font-lock-type-face . 3)
340: "[ \t\n]" t name (font-lock-function-name-face . 3))
341: (("bind") non-immediate (font-lock-keyword-face . 2)
342: "[ \t\n]" t name (font-lock-type-face . 3)
343: "[ \t\n]" t name (font-lock-function-name-face . 3))
344: (("inst-var" "inst-value") non-immediate (font-lock-type-face . 2)
345: "[ \t\n]" t name (font-lock-variable-name-face . 3))
346: (("method" "selector")
347: non-immediate (font-lock-type-face . 1)
348: "[ \t\n]" t name (font-lock-function-name-face . 3))
349: (("end-class" "end-interface")
350: non-immediate (font-lock-keyword-face . 2)
351: "[ \t\n]" t name (font-lock-type-face . 3))
352: (("public" "protected" "class" "exitm" "implementation" "interface"
353: "methods" "end-methods" "this")
354: non-immediate (font-lock-keyword-face . 2))
355: (("object") non-immediate (font-lock-type-face . 2)))
356: "Hilighting description for words of the \"Objects\" package")
357:
358:
359: (defvar forth-use-oof nil
360: "*Non-nil makes forth-mode also hilight words from the \"OOF\" package.")
361: (defvar forth-oof-words
362: '((("class") non-immediate (font-lock-keyword-face . 2)
363: "[ \t\n]" t name (font-lock-type-face . 3))
364: (("var") non-immediate (font-lock-type-face . 2)
365: "[ \t\n]" t name (font-lock-variable-name-face . 3))
366: (("method" "early") non-immediate (font-lock-type-face . 2)
367: "[ \t\n]" t name (font-lock-function-name-face . 3))
368: (("::" "super" "bind" "bound" "link")
369: immediate (font-lock-keyword-face . 2)
370: "[ \t\n]" t name (font-lock-function-name-face . 3))
371: (("ptr" "asptr" "[]")
372: immediate (font-lock-keyword-face . 2)
373: "[ \t\n]" t name (font-lock-variable-name-face . 3))
374: (("class;" "how:" "self" "new" "new[]" "definitions" "class?" "with"
375: "endwith")
376: non-immediate (font-lock-keyword-face . 2))
377: (("object") non-immediate (font-lock-type-face . 2)))
378: "Hilighting description for words of the \"OOF\" package")
379:
380: (defvar forth-local-words nil
381: "List of Forth words to prepend to `forth-words'. Should be set by a
382: forth source, using a local variables list at the end of the file
383: (\"Local Variables: ... forth-local-words: ... End:\" construct).")
384:
385: (defvar forth-custom-words nil
386: "List of Forth words to prepend to `forth-words'. Should be set in your
387: .emacs.")
388:
389: (defvar forth-hilight-level 3 "*Level of hilighting of Forth code.")
390:
391: (defvar forth-compiled-words nil "Compiled representation of `forth-words'.")
392:
393: (defvar forth-indent-words nil
394: "List of words that have indentation behaviour.
395: Each element of `forth-indent-words' should have the form
396: (MATCHER INDENT1 INDENT2 &optional TYPE)
397:
398: MATCHER is either a list of strings to match, or a REGEXP.
399: If it's a REGEXP, it should not be surrounded by `\\<` or `\\>`, since
400: that'll be done automatically by the search routines.
401:
402: TYPE might be omitted. If it's specified, the only allowed value is
403: currently the symbol `non-immediate', meaning that the word will not
404: have any effect on indentation inside definitions. (:NONAME is a good
405: example for this kind of word).
406:
407: INDENT1 specifies how to indent a word that's located at the beginning
408: of a line, following any number of whitespaces.
409:
410: INDENT2 specifies how to indent words that are not located at the
411: beginning of a line.
412:
413: INDENT1 and INDENT2 are indentation specifications of the form
414: (SELF-INDENT . NEXT-INDENT), where SELF-INDENT is a numerical value,
415: specifying how the matching line and all following lines are to be
416: indented, relative to previous lines. NEXT-INDENT specifies how to indent
417: following lines, relative to the matching line.
418:
419: Even values of SELF-INDENT and NEXT-INDENT correspond to multiples of
420: `forth-indent-level'. Odd values get an additional
421: `forth-minor-indent-level' added/substracted. Eg a value of -2 indents
422: 1 * forth-indent-level to the left, wheras 3 indents
423: 1 * forth-indent-level + forth-minor-indent-level columns to the right.")
424:
425: (setq forth-indent-words
426: '((("if" "begin" "do" "?do" "+do" "-do" "u+do"
427: "u-do" "?dup-if" "?dup-0=-if" "case" "of" "try" "iferror"
428: "[if]" "[ifdef]" "[ifundef]" "[begin]" "[for]" "[do]" "[?do]")
429: (0 . 2) (0 . 2))
430: ((":" ":noname" "code" "abi-code" "struct" "m:" ":m" "class"
431: "interface")
432: (0 . 2) (0 . 2) non-immediate)
433: ("\\S-+%$" (0 . 2) (0 . 0) non-immediate)
434: ((";" ";m") (-2 . 0) (0 . -2))
435: (("again" "then" "endif" "endtry" "endcase" "endof"
436: "[then]" "[endif]" "[loop]" "[+loop]" "[next]"
437: "[until]" "[again]" "loop")
438: (-2 . 0) (0 . -2))
439: (("end-code" "end-class" "end-interface" "end-class-noname"
440: "end-interface-noname" "end-struct" "class;")
441: (-2 . 0) (0 . -2) non-immediate)
442: (("protected" "public" "how:") (-1 . 1) (0 . 0) non-immediate)
443: (("+loop" "-loop" "until") (-2 . 0) (-2 . 0))
444: (("else" "recover" "restore" "endtry-iferror" "[else]")
445: (-2 . 2) (0 . 0))
446: (("does>") (-1 . 1) (0 . 0))
447: (("while" "[while]") (-2 . 4) (0 . 2))
448: (("repeat" "[repeat]") (-4 . 0) (0 . -4))))
449:
450: (defvar forth-local-indent-words nil
451: "List of Forth words to prepend to `forth-indent-words', when a forth-mode
452: buffer is created. Should be set by a Forth source, using a local variables
453: list at the end of the file (\"Local Variables: ... forth-local-words: ...
454: End:\" construct).")
455:
456: (defvar forth-custom-indent-words nil
457: "List of Forth words to prepend to `forth-indent-words'. Should be set in
458: your .emacs.")
459:
460: (defvar forth-indent-level 4
461: "*Indentation of Forth statements.")
462: (defvar forth-minor-indent-level 2
463: "*Minor indentation of Forth statements.")
464: (defvar forth-compiled-indent-words nil)
465:
466: ;(setq debug-on-error t)
467:
468: ;; Filter list by predicate. This is a somewhat standard function for
469: ;; functional programming languages. So why isn't it already implemented
470: ;; in Lisp??
471: (defun forth-filter (predicate list)
472: (let ((filtered nil))
473: (dolist (item list)
474: (when (funcall predicate item)
475: (if filtered
476: (nconc filtered (list item))
477: (setq filtered (cons item nil)))))
478: filtered))
479:
480: ;; Helper function for `forth-compile-word': return whether word has to be
481: ;; added to the compiled word list, for syntactic parsing and hilighting.
482: (defun forth-words-filter (word)
483: (let* ((hilight (nth 2 word))
484: (level (cdr hilight))
485: (parsing-flag (nth 3 word)))
486: (or parsing-flag
487: (<= level forth-hilight-level))))
488:
489: ;; Helper function for `forth-compile-word': translate one entry from
490: ;; `forth-words' into the form (regexp regexp-depth word-description)
491: (defun forth-compile-words-mapper (word)
492: ;; warning: we cannot rely on regexp-opt's PAREN argument, since
493: ;; XEmacs will use shy parens by default :-(
494: (let* ((matcher (car word))
495: (regexp
496: (concat "\\(" (cond ((stringp matcher) matcher)
497: ((listp matcher) (regexp-opt matcher))
498: (t (error "Invalid matcher")))
499: "\\)"))
500: (depth (regexp-opt-depth regexp))
501: (description (cdr word)))
502: (list regexp depth description)))
503:
504: ;; Read `words' and create a compiled representation suitable for efficient
505: ;; parsing of the form
506: ;; (regexp (subexp-count word-description) (subexp-count2 word-description2)
507: ;; ...)
508: (defun forth-compile-wordlist (words)
509: (let* ((mapped (mapcar 'forth-compile-words-mapper words))
510: (regexp (concat "\\<\\("
511: (mapconcat 'car mapped "\\|")
512: "\\)\\>"))
513: (sub-count 2)
514: (sub-list (mapcar
515: (lambda (i)
516: (let ((sub (cons sub-count (nth 2 i))))
517: (setq sub-count (+ sub-count (nth 1 i)))
518: sub
519: ))
520: mapped)))
521: (let ((result (cons regexp sub-list)))
522: (byte-compile 'result)
523: result)))
524:
525: (defun forth-compile-words ()
526: "Compile the the words from `forth-words' and `forth-indent-words' into
527: the format that's later used for doing the actual hilighting/indentation.
528: Store the resulting compiled wordlists in `forth-compiled-words' and
529: `forth-compiled-indent-words', respective"
530: (setq forth-compiled-words
531: (forth-compile-wordlist
532: (forth-filter 'forth-words-filter forth-words)))
533: (setq forth-compiled-indent-words
534: (forth-compile-wordlist forth-indent-words)))
535:
536: (defun forth-hack-local-variables ()
537: "Parse and bind local variables, set in the contents of the current
538: forth-mode buffer. Prepend `forth-local-words' to `forth-words' and
539: `forth-local-indent-words' to `forth-indent-words'."
540: (put 'forth-local-indent-words 'safe-local-variable 'listp)
541: (put 'forth-local-words 'safe-local-variable 'listp)
542: (hack-local-variables)
543: (setq forth-words (append forth-local-words forth-words))
544: (setq forth-indent-words (append forth-local-indent-words
545: forth-indent-words)))
546:
547: (defun forth-customize-words ()
548: "Add the words from `forth-custom-words' and `forth-custom-indent-words'
549: to `forth-words' and `forth-indent-words', respective. Add
550: `forth-objects-words' and/or `forth-oof-words' to `forth-words', if
551: `forth-use-objects' and/or `forth-use-oof', respective is set."
552: (setq forth-words (append forth-custom-words forth-words
553: (if forth-use-oof forth-oof-words nil)
554: (if forth-use-objects forth-objects-words nil)))
555: (setq forth-indent-words (append
556: forth-custom-indent-words forth-indent-words)))
557:
558:
559:
560: ;; get location of first character of previous forth word that's got
561: ;; properties
562: (defun forth-previous-start (pos)
563: (let* ((word (get-text-property pos 'forth-word))
564: (prev (previous-single-property-change
565: (min (point-max) (1+ pos)) 'forth-word
566: (current-buffer) (point-min))))
567: (if (or (= (point-min) prev) word) prev
568: (if (get-text-property (1- prev) 'forth-word)
569: (previous-single-property-change
570: prev 'forth-word (current-buffer) (point-min))
571: (point-min)))))
572:
573: ;; Get location of the last character of the current/next forth word that's
574: ;; got properties, text that's parsed by the word is considered as parts of
575: ;; the word.
576: (defun forth-next-end (pos)
577: (let* ((word (get-text-property pos 'forth-word))
578: (next (next-single-property-change pos 'forth-word
579: (current-buffer) (point-max))))
580: (if word next
581: (if (get-text-property next 'forth-word)
582: (next-single-property-change
583: next 'forth-word (current-buffer) (point-max))
584: (point-max)))))
585:
586: (defun forth-next-whitespace (pos)
587: (save-excursion
588: (goto-char pos)
589: (skip-syntax-forward "-" (point-max))
590: (point)))
591: (defun forth-previous-word (pos)
592: (save-excursion
593: (goto-char pos)
594: (re-search-backward "\\<" pos (point-min) 1)
595: (point)))
596:
597: ;; Delete all properties, used by Forth mode, from `from' to `to'.
598: (defun forth-delete-properties (from to)
599: (remove-text-properties
600: from to '(face nil fontified nil
601: forth-parsed nil forth-word nil forth-state nil)))
602:
603: ;; Get the index of the branch of the most recently evaluated regular
604: ;; expression that matched. (used for identifying branches "a\\|b\\|c...")
605: (defun forth-get-regexp-branch ()
606: (let ((count 2))
607: (while (not (condition-case err (match-beginning count)
608: (args-out-of-range t))) ; XEmacs requires error handling
609: (setq count (1+ count)))
610: count))
611:
612: ;; seek to next forth-word and return its "word-description"
613: (defun forth-next-known-forth-word (to)
614: (if (<= (point) to)
615: (progn
616: (let* ((regexp (car forth-compiled-words))
617: (pos (re-search-forward regexp to t)))
618: (if pos (let ((branch (forth-get-regexp-branch))
619: (descr (cdr forth-compiled-words)))
620: (goto-char (match-beginning 0))
621: (cdr (assoc branch descr)))
622: 'nil)))
623: nil))
624:
625: ;; Set properties of forth word at `point', eventually parsing subsequent
626: ;; words, and parsing all whitespaces. Set point to delimiter after word.
627: ;; The word, including it's parsed text gets the `forth-word' property, whose
628: ;; value is unique, and may be used for getting the word's start/end
629: ;; positions.
630: (defun forth-set-word-properties (state data)
631: (let* ((start (point))
632: (end (progn (re-search-forward "[ \t]\\|$" (point-max) 1)
633: (point)))
634: (type (car data))
635: (hilight (nth 1 data))
636: (bad-word (and (not state) (eq type 'compile-only)))
637: (hlface (if bad-word font-lock-warning-face
638: (if (<= (cdr hilight) forth-hilight-level)
639: (car hilight) nil))))
640: (when hlface (put-text-property start end 'face hlface))
641: ;; if word parses in current state, process parsed range of text
642: (when (or (not state) (eq type 'compile-only) (eq type 'immediate))
643: (let ((parse-data (nthcdr 2 data)))
644: (while parse-data
645: (let ((delim (nth 0 parse-data))
646: (skip-leading (nth 1 parse-data))
647: (parse-type (nth 2 parse-data))
648: (parsed-hilight (nth 3 parse-data))
649: (parse-start (point))
650: (parse-end))
651: (when skip-leading
652: (while (and (looking-at delim) (> (match-end 0) (point))
653: (not (looking-at "\n")))
654: (forward-char)))
655: (re-search-forward delim (point-max) 1)
656: (setq parse-end (point))
657: (forth-delete-properties end parse-end)
658: (when (<= (cdr parsed-hilight) forth-hilight-level)
659: (put-text-property
660: parse-start parse-end 'face (car parsed-hilight)))
661: (put-text-property
662: parse-start parse-end 'forth-parsed parse-type)
663: (setq end parse-end)
664: (setq parse-data (nthcdr 4 parse-data))))))
665: (put-text-property start end 'forth-word start)))
666:
667: ;; Search for known Forth words in the range `from' to `to', using
668: ;; `forth-next-known-forth-word' and set their properties via
669: ;; `forth-set-word-properties'.
670: (defun forth-update-properties (from to &optional loudly)
671: (save-excursion
672: (let ((msg-count 0) (state) (word-descr) (last-location))
673: (goto-char (forth-previous-word (forth-previous-start
674: (max (point-min) (1- from)))))
675: (setq to (forth-next-end (min (point-max) (1+ to))))
676: ;; `to' must be on a space delimiter, if a parsing word was changed
677: (setq to (forth-next-whitespace to))
678: (setq state (get-text-property (point) 'forth-state))
679: (setq last-location (point))
680: (forth-delete-properties (point) to)
681: (put-text-property (point) to 'fontified t)
682: ;; hilight loop...
683: (while (setq word-descr (forth-next-known-forth-word to))
684: (when loudly
685: (when (equal 0 (% msg-count 100))
686: (message "Parsing Forth code...%s"
687: (make-string (/ msg-count 100) ?.)))
688: (setq msg-count (1+ msg-count)))
689: (forth-set-word-properties state word-descr)
690: (when state (put-text-property last-location (point) 'forth-state t))
691: (let ((type (car word-descr)))
692: (if (eq type 'definition-starter) (setq state t))
693: (if (eq type 'definition-ender) (setq state nil))
694: (setq last-location (point))))
695: ;; update state property up to `to'
696: (if (and state (< (point) to))
697: (put-text-property last-location to 'forth-state t))
698: ;; extend search if following state properties differ from current state
699: (if (< to (point-max))
700: (if (not (equal state (get-text-property (1+ to) 'forth-state)))
701: (let ((extend-to (next-single-property-change
702: to 'forth-state (current-buffer) (point-max))))
703: (forth-update-properties to extend-to))
704: ))
705: )))
706:
707: ;; save-buffer-state borrowed from `font-lock.el'
708: (eval-when-compile
709: (defmacro forth-save-buffer-state (varlist &rest body)
710: "Bind variables according to VARLIST and eval BODY restoring buffer state."
711: `(let* (,@(append varlist
712: '((modified (buffer-modified-p)) (buffer-undo-list t)
713: (inhibit-read-only t) (inhibit-point-motion-hooks t)
714: before-change-functions after-change-functions
715: deactivate-mark buffer-file-name buffer-file-truename)))
716: ,@body
717: (when (and (not modified) (buffer-modified-p))
718: (set-buffer-modified-p nil)))))
719:
720: ;; Function that is added to the `change-functions' hook. Calls
721: ;; `forth-update-properties' and keeps care of disabling undo information
722: ;; and stuff like that.
723: (defun forth-change-function (from to len &optional loudly)
724: (save-match-data
725: (forth-save-buffer-state
726: ()
727: (unless forth-disable-parser (forth-update-properties from to loudly))
728: (forth-update-warn-long-lines))))
729:
730: (defun forth-fontification-function (from)
731: "Function to be called from `fontification-functions' of Emacs 21."
732: (save-match-data
733: (forth-save-buffer-state
734: ((to (min (point-max) (+ from 100))))
735: (unless (or forth-disable-parser (not forth-jit-parser)
736: (get-text-property from 'fontified))
737: (forth-update-properties from to)))))
738:
739: (eval-when-compile
740: (byte-compile 'forth-set-word-properties)
741: (byte-compile 'forth-next-known-forth-word)
742: (byte-compile 'forth-update-properties)
743: (byte-compile 'forth-delete-properties)
744: (byte-compile 'forth-get-regexp-branch))
745:
746: ;;; imenu support
747: ;;;
748: (defvar forth-defining-words
749: '("VARIABLE" "CONSTANT" "2VARIABLE" "2CONSTANT" "FVARIABLE" "FCONSTANT"
750: "USER" "VALUE" "field" "end-struct" "VOCABULARY" "CREATE" ":" "CODE"
751: "DEFER" "ALIAS")
752: "List of words, that define the following word.
753: Used for imenu index generation.")
754:
755: (defvar forth-defining-words-regexp nil
756: "Regexp that's generated for matching `forth-defining-words'")
757:
758: (defun forth-next-definition-starter ()
759: (progn
760: (let* ((pos (re-search-forward forth-defining-words-regexp (point-max) t)))
761: (if pos
762: (if (or (text-property-not-all (match-beginning 0) (match-end 0)
763: 'forth-parsed nil)
764: (text-property-not-all (match-beginning 0) (match-end 0)
765: 'forth-state nil))
766: (forth-next-definition-starter)
767: t)
768: nil))))
769:
770: (defun forth-create-index ()
771: (let* ((forth-defining-words-regexp
772: (concat "\\<\\(" (regexp-opt forth-defining-words) "\\)\\>"))
773: (index nil))
774: (goto-char (point-min))
775: (while (forth-next-definition-starter)
776: (if (looking-at "[ \t]*\\([^ \t\n]+\\)")
777: (setq index (cons (cons (match-string 1) (point)) index))))
778: index))
779:
780: ;; top-level require is executed at byte-compile and load time
781: (eval-and-compile (forth-require 'speedbar))
782:
783: ;; this code is executed at load-time only
784: (when (memq 'speedbar features)
785: (speedbar-add-supported-extension ".fs")
786: (speedbar-add-supported-extension ".fb"))
787:
788: ;; (require 'profile)
789: ;; (setq profile-functions-list '(forth-set-word-properties forth-next-known-forth-word forth-update-properties forth-delete-properties forth-get-regexp-branch))
790:
791: ;;; Indentation
792: ;;;
793:
794: ;; Return, whether `pos' is the first forth word on its line
795: (defun forth-first-word-on-line-p (pos)
796: (save-excursion
797: (beginning-of-line)
798: (skip-chars-forward " \t")
799: (= pos (point))))
800:
801: ;; Return indentation data (SELF-INDENT . NEXT-INDENT) of next known
802: ;; indentation word, or nil if there is no word up to `to'.
803: ;; Position `point' at location just after found word, or at `to'. Parsed
804: ;; ranges of text will not be taken into consideration!
805: (defun forth-next-known-indent-word (to)
806: (if (<= (point) to)
807: (progn
808: (let* ((regexp (car forth-compiled-indent-words))
809: (pos (re-search-forward regexp to t)))
810: (if pos
811: (let* ((start (match-beginning 0))
812: (end (match-end 0))
813: (branch (forth-get-regexp-branch))
814: (descr (cdr forth-compiled-indent-words))
815: (indent (cdr (assoc branch descr)))
816: (type (nth 2 indent)))
817: ;; skip words that are parsed (strings/comments) and
818: ;; non-immediate words inside definitions
819: (if (or (text-property-not-all start end 'forth-parsed nil)
820: (and (eq type 'non-immediate)
821: (text-property-not-all start end
822: 'forth-state nil)))
823: (forth-next-known-indent-word to)
824: (if (forth-first-word-on-line-p (match-beginning 0))
825: (nth 0 indent) (nth 1 indent))))
826: nil)))
827: nil))
828:
829: ;; Translate indentation value `indent' to indentation column. Multiples of
830: ;; 2 correspond to multiples of `forth-indent-level'. Odd numbers get an
831: ;; additional `forth-minor-indent-level' added (or substracted).
832: (defun forth-convert-to-column (indent)
833: (let* ((sign (if (< indent 0) -1 1))
834: (value (abs indent))
835: (major (* (/ value 2) forth-indent-level))
836: (minor (* (% value 2) forth-minor-indent-level)))
837: (* sign (+ major minor))))
838:
839: ;; Return the column increment, that the current line of forth code does to
840: ;; the current or following lines. `which' specifies which indentation values
841: ;; to use. 1 means the indentation of following lines relative to current
842: ;; line, 0 means the indentation of the current line relative to the previous
843: ;; line. Return `nil', if there are no indentation words on the current line.
844: (defun forth-get-column-incr (which)
845: (save-excursion
846: (let ((regexp (car forth-compiled-indent-words))
847: (word-indent)
848: (self-indent nil)
849: (next-indent nil)
850: (to (save-excursion (end-of-line) (point))))
851: (beginning-of-line)
852: (while (setq word-indent (forth-next-known-indent-word to))
853: (let* ((self-incr (car word-indent))
854: (next-incr (cdr word-indent))
855: (self-column-incr (forth-convert-to-column self-incr))
856: (next-column-incr (forth-convert-to-column next-incr)))
857: (setq next-indent (if next-indent next-indent 0))
858: (setq self-indent (if self-indent self-indent 0))
859: (if (or (and (> next-indent 0) (< self-column-incr 0))
860: (and (< next-indent 0) (> self-column-incr 0)))
861: (setq next-indent (+ next-indent self-column-incr))
862: (setq self-indent (+ self-indent self-column-incr)))
863: (setq next-indent (+ next-indent next-column-incr))))
864: (nth which (list self-indent next-indent)))))
865:
866: ;; Find previous line that contains indentation words, return the column,
867: ;; to which following text should be indented to.
868: (defun forth-get-anchor-column ()
869: (save-excursion
870: (if (/= 0 (forward-line -1)) 0
871: (let ((indent))
872: (while (not (or (setq indent (forth-get-column-incr 1))
873: (<= (point) (point-min))))
874: (forward-line -1))
875: (+ (current-indentation) (if indent indent 0))))))
876:
877: (defun forth-indent-line (&optional flag)
878: "Correct indentation of the current Forth line."
879: (let* ((anchor (forth-get-anchor-column))
880: (column-incr (forth-get-column-incr 0)))
881: (forth-indent-to (if column-incr (+ anchor column-incr) anchor))))
882:
883: (defun forth-current-column ()
884: (- (point) (save-excursion (beginning-of-line) (point))))
885: (defun forth-current-indentation ()
886: (- (save-excursion (beginning-of-line) (forward-to-indentation 0) (point))
887: (save-excursion (beginning-of-line) (point))))
888:
889: (defun forth-indent-to (x)
890: (let ((p nil))
891: (setq p (- (forth-current-column) (forth-current-indentation)))
892: (forth-delete-indentation)
893: (beginning-of-line)
894: (indent-to x)
895: (if (> p 0) (forward-char p))))
896:
897: (defun forth-delete-indentation ()
898: (save-excursion
899: (delete-region
900: (progn (beginning-of-line) (point))
901: (progn (back-to-indentation) (point)))))
902:
903: (defun forth-indent-command ()
904: (interactive)
905: (forth-indent-line t))
906:
907: ;; remove trailing whitespaces in current line
908: (defun forth-remove-trailing ()
909: (save-excursion
910: (end-of-line)
911: (delete-region (point) (progn (skip-chars-backward " \t") (point)))))
912:
913: ;; insert newline, removing any trailing whitespaces in the current line
914: (defun forth-newline-remove-trailing ()
915: (save-excursion
916: (delete-region (point) (progn (skip-chars-backward " \t") (point))))
917: (newline))
918: ; (let ((was-point (point-marker)))
919: ; (unwind-protect
920: ; (progn (forward-line -1) (forth-remove-trailing))
921: ; (goto-char (was-point)))))
922:
923: ;; workaround for bug in `reindent-then-newline-and-indent'
924: (defun forth-reindent-then-newline-and-indent ()
925: (interactive "*")
926: (indent-according-to-mode)
927: (forth-newline-remove-trailing)
928: (indent-according-to-mode))
929:
930:
931: ;;; Block file encoding/decoding (dk)
932: ;;;
933:
934: (defconst forth-c/l 64 "Number of characters per block line")
935: (defconst forth-l/b 16 "Number of lines per block")
936:
937: ;; Check whether the unconverted block file line, point is in, does not
938: ;; contain `\n' and `\t' characters.
939: (defun forth-check-block-line (line)
940: (let ((end (save-excursion (beginning-of-line) (forward-char forth-c/l)
941: (point))))
942: (save-excursion
943: (beginning-of-line)
944: (when (search-forward "\n" end t)
945: (message "Warning: line %i contains newline character #10" line)
946: (ding t))
947: (beginning-of-line)
948: (when (search-forward "\t" end t)
949: (message "Warning: line %i contains tab character #8" line)
950: (ding t)))))
951:
952: (defun forth-convert-from-block (from to)
953: "Convert block file format to stream source in current buffer."
954: (let ((line (count-lines (point-min) from)))
955: (save-excursion
956: (goto-char from)
957: (set-mark to)
958: (while (< (+ (point) forth-c/l) (mark t))
959: (setq line (1+ line))
960: (forth-check-block-line line)
961: (forward-char forth-c/l)
962: (forth-newline-remove-trailing))
963: (when (= (+ (point) forth-c/l) (mark t))
964: (forth-remove-trailing))
965: (mark t))))
966:
967: ;; Pad a line of a block file up to `forth-c/l' characters, positioning `point'
968: ;; at the end of line.
969: (defun forth-pad-block-line ()
970: (save-excursion
971: (end-of-line)
972: (if (<= (current-column) forth-c/l)
973: (move-to-column forth-c/l t)
974: (message "Line %i longer than %i characters, truncated"
975: (count-lines (point-min) (point)) forth-c/l)
976: (ding t)
977: (move-to-column forth-c/l t)
978: (delete-region (point) (progn (end-of-line) (point))))))
979:
980: ;; Replace tab characters in current line by spaces.
981: (defun forth-convert-tabs-in-line ()
982: (save-excursion
983: (beginning-of-line)
984: (while (search-forward "\t" (save-excursion (end-of-line) (point)) t)
985: (backward-char)
986: (delete-region (point) (1+ (point)))
987: (insert-char ?\ (- tab-width (% (current-column) tab-width))))))
988:
989: ;; Delete newline at end of current line, concatenating it with the following
990: ;; line. Place `point' at end of newly formed line.
991: (defun forth-delete-newline ()
992: (end-of-line)
993: (delete-region (point) (progn (beginning-of-line 2) (point))))
994:
995: (defun forth-convert-to-block (from to &optional original-buffer)
996: "Convert range of text to block file format in current buffer."
997: (let* ((lines 0)) ; I have to count lines myself, since `count-lines' has
998: ; problems with trailing newlines...
999: (save-excursion
1000: (goto-char from)
1001: (set-mark to)
1002: ;; pad lines to full length (`forth-c/l' characters per line)
1003: (while (< (save-excursion (end-of-line) (point)) (mark t))
1004: (setq lines (1+ lines))
1005: (forth-pad-block-line)
1006: (forth-convert-tabs-in-line)
1007: (forward-line))
1008: ;; also make sure the last line is padded, if `to' is at its end
1009: (end-of-line)
1010: (when (= (point) (mark t))
1011: (setq lines (1+ lines))
1012: (forth-pad-block-line)
1013: (forth-convert-tabs-in-line))
1014: ;; remove newlines between lines
1015: (goto-char from)
1016: (while (< (save-excursion (end-of-line) (point)) (mark t))
1017: (forth-delete-newline))
1018: ;; append empty lines, until last block is complete
1019: (goto-char (mark t))
1020: (let* ((required (* (/ (+ lines (1- forth-l/b)) forth-l/b) forth-l/b))
1021: (pad-lines (- required lines)))
1022: (while (> pad-lines 0)
1023: (insert-char ?\ forth-c/l)
1024: (setq pad-lines (1- pad-lines))))
1025: (point))))
1026:
1027: (defun forth-detect-block-file-p ()
1028: "Return non-nil if the current buffer is in block file format. Detection is
1029: done by checking whether the first line has 1024 characters or more."
1030: (save-restriction
1031: (widen)
1032: (save-excursion
1033: (goto-char (point-min))
1034: (end-of-line)
1035: (>= (current-column) 1024))))
1036:
1037: ;; add block file conversion routines to `format-alist'
1038: (defconst forth-block-format-description
1039: '(forth-blocks "Forth block source file" nil
1040: forth-convert-from-block forth-convert-to-block
1041: t normal-mode))
1042: (unless (memq forth-block-format-description format-alist)
1043: (setq format-alist (cons forth-block-format-description format-alist)))
1044:
1045: ;;; End block file encoding/decoding
1046:
1047: ;;; Block file editing
1048: ;;;
1049: (defvar forth-overlay-arrow-string ">>")
1050: (defvar forth-block-base 1 "Number of first block in block file")
1051: (defvar forth-show-screen nil
1052: "Non-nil means to show screen starts and numbers (for block files)")
1053: (defvar forth-warn-long-lines nil
1054: "Non-nil means to warn about lines that are longer than 64 characters")
1055:
1056: (defvar forth-screen-marker nil)
1057: (defvar forth-screen-number-string nil)
1058:
1059: (defun forth-update-show-screen ()
1060: "If `forth-show-screen' is non-nil, put overlay arrow to start of screen,
1061: `point' is in. If arrow now points to different screen than before, display
1062: screen number."
1063: (if (not forth-show-screen)
1064: (setq overlay-arrow-string nil)
1065: (save-excursion
1066: (let* ((line (count-lines (point-min) (min (point-max) (1+ (point)))))
1067: (first-line (1+ (* (/ (1- line) forth-l/b) forth-l/b)))
1068: (scr (+ forth-block-base (/ first-line forth-l/b))))
1069: (setq overlay-arrow-string forth-overlay-arrow-string)
1070: (goto-line first-line)
1071: (setq overlay-arrow-position forth-screen-marker)
1072: (set-marker forth-screen-marker
1073: (save-excursion (goto-line first-line) (point)))
1074: (setq forth-screen-number-string (format "%d" scr))))))
1075:
1076: (add-hook 'forth-motion-hooks 'forth-update-show-screen)
1077:
1078: (defun forth-update-warn-long-lines ()
1079: "If `forth-warn-long-lines' is non-nil, display a warning whenever a line
1080: exceeds 64 characters."
1081: (when forth-warn-long-lines
1082: (when (> (save-excursion (end-of-line) (current-column)) forth-c/l)
1083: (message "Warning: current line exceeds %i characters"
1084: forth-c/l))))
1085:
1086: (add-hook 'forth-motion-hooks 'forth-update-warn-long-lines)
1087:
1088: ;;; End block file editing
1089:
1090:
1091: (defvar forth-mode-abbrev-table nil
1092: "Abbrev table in use in Forth-mode buffers.")
1093:
1094: (define-abbrev-table 'forth-mode-abbrev-table ())
1095:
1096: (defvar forth-mode-map nil
1097: "Keymap used in Forth mode.")
1098:
1099: (if (not forth-mode-map)
1100: (setq forth-mode-map (make-sparse-keymap)))
1101:
1102: ;(define-key forth-mode-map "\M-\C-x" 'compile)
1103: (define-key forth-mode-map "\C-x\\" 'comment-region)
1104: (define-key forth-mode-map "\C-x~" 'forth-remove-tracers)
1105: (define-key forth-mode-map "\C-x\C-m" 'forth-split)
1106: (define-key forth-mode-map "\e " 'forth-reload)
1107: (define-key forth-mode-map "\t" 'forth-indent-command)
1108: (define-key forth-mode-map "\C-m" 'forth-reindent-then-newline-and-indent)
1109: (define-key forth-mode-map "\M-q" 'forth-fill-paragraph)
1110: (define-key forth-mode-map "\e." 'forth-find-tag)
1111:
1112: ;; setup for C-h C-i to work
1113: (eval-and-compile (forth-require 'info-look))
1114: (when (memq 'info-look features)
1115: (defvar forth-info-lookup '(symbol (forth-mode "\\S-+" t
1116: (("(gforth)Word Index"))
1117: "\\S-+")))
1118: (unless (memq forth-info-lookup info-lookup-alist)
1119: (setq info-lookup-alist (cons forth-info-lookup info-lookup-alist)))
1120: ;; in X-Emacs C-h C-i is by default bound to Info-query
1121: (define-key forth-mode-map [?\C-h ?\C-i] 'info-lookup-symbol))
1122:
1123: ;; (info-lookup-add-help
1124: ;; :topic 'symbol
1125: ;; :mode 'forth-mode
1126: ;; :regexp "[^
1127: ;; ]+"
1128: ;; :ignore-case t
1129: ;; :doc-spec '(("(gforth)Name Index" nil "`" "' "))))
1130:
1131: (require 'etags)
1132:
1133: (defun forth-find-tag (tagname &optional next-p regexp-p)
1134: (interactive (find-tag-interactive "Find tag: "))
1135: (unless (or regexp-p next-p)
1136: (setq tagname (concat "\\(^\\|\\s-+\\)\\(" (regexp-quote tagname)
1137: "\\)\\s-*\x7f")))
1138: (switch-to-buffer
1139: (find-tag-noselect tagname next-p t)))
1140:
1141: (defvar forth-mode-syntax-table nil
1142: "Syntax table in use in Forth-mode buffers.")
1143:
1144: ;; Important: hilighting/indentation now depends on a correct syntax table.
1145: ;; All characters, except whitespace *must* belong to the "word constituent"
1146: ;; syntax class. If different behaviour is required, use of Categories might
1147: ;; help.
1148: (if (not forth-mode-syntax-table)
1149: (progn
1150: (setq forth-mode-syntax-table (make-syntax-table))
1151: (let ((char 0))
1152: (while (< char ?!)
1153: (modify-syntax-entry char " " forth-mode-syntax-table)
1154: (setq char (1+ char)))
1155: (while (< char 256)
1156: (modify-syntax-entry char "w" forth-mode-syntax-table)
1157: (setq char (1+ char))))
1158: ))
1159:
1160: (defun forth-mode-variables ()
1161: (set-syntax-table forth-mode-syntax-table)
1162: (setq local-abbrev-table forth-mode-abbrev-table)
1163: (make-local-variable 'paragraph-start)
1164: (setq paragraph-start (concat "^$\\|" page-delimiter))
1165: (make-local-variable 'paragraph-separate)
1166: (setq paragraph-separate paragraph-start)
1167: (make-local-variable 'indent-line-function)
1168: (setq indent-line-function 'forth-indent-line)
1169: ; (make-local-variable 'require-final-newline)
1170: ; (setq require-final-newline t)
1171: (make-local-variable 'comment-start)
1172: (setq comment-start "\\ ")
1173: ;(make-local-variable 'comment-end)
1174: ;(setq comment-end " )")
1175: (make-local-variable 'comment-column)
1176: (setq comment-column 40)
1177: (make-local-variable 'comment-start-skip)
1178: (setq comment-start-skip "\\\\ ")
1179: (make-local-variable 'comment-indent-function)
1180: (setq comment-indent-function 'forth-comment-indent)
1181: (make-local-variable 'parse-sexp-ignore-comments)
1182: (setq parse-sexp-ignore-comments t)
1183: (setq case-fold-search t)
1184: (make-local-variable 'forth-was-point)
1185: (setq forth-was-point -1)
1186: (make-local-variable 'forth-words)
1187: (make-local-variable 'forth-compiled-words)
1188: (make-local-variable 'forth-compiled-indent-words)
1189: (make-local-variable 'forth-hilight-level)
1190: (make-local-variable 'after-change-functions)
1191: (make-local-variable 'forth-show-screen)
1192: (make-local-variable 'forth-screen-marker)
1193: (make-local-variable 'forth-warn-long-lines)
1194: (make-local-variable 'forth-screen-number-string)
1195: (make-local-variable 'forth-use-oof)
1196: (make-local-variable 'forth-use-objects)
1197: (setq forth-screen-marker (copy-marker 0))
1198: (add-hook 'after-change-functions 'forth-change-function)
1199: (if (and forth-jit-parser (>= emacs-major-version 21))
1200: (add-hook 'fontification-functions 'forth-fontification-function))
1201: (setq imenu-create-index-function 'forth-create-index))
1202:
1203: ;;;###autoload
1204: (defun forth-mode ()
1205: "
1206: Major mode for editing Forth code. Tab indents for Forth code. Comments
1207: are delimited with \\ and newline. Paragraphs are separated by blank lines
1208: only. Block files are autodetected, when read, and converted to normal
1209: stream source format. See also `forth-block-mode'.
1210: \\{forth-mode-map}
1211:
1212: Variables controlling syntax hilighting/recognition of parsed text:
1213: `forth-words'
1214: List of words that have a special parsing behaviour and/or should be
1215: hilighted. Add custom words by setting forth-custom-words in your
1216: .emacs, or by setting forth-local-words, in source-files' local
1217: variables lists.
1218: forth-use-objects
1219: Set this variable to non-nil in your .emacs, or in a local variables
1220: list, to hilight and recognize the words from the \"Objects\" package
1221: for object-oriented programming.
1222: forth-use-oof
1223: Same as above, just for the \"OOF\" package.
1224: forth-custom-words
1225: List of custom Forth words to prepend to `forth-words'. Should be set
1226: in your .emacs.
1227: forth-local-words
1228: List of words to prepend to `forth-words', whenever a forth-mode
1229: buffer is created. That variable should be set by Forth sources, using
1230: a local variables list at the end of file, to get file-specific
1231: hilighting.
1232: 0 [IF]
1233: Local Variables: ...
1234: forth-local-words: ...
1235: End:
1236: [THEN]
1237: forth-hilight-level
1238: Controls how much syntax hilighting is done. Should be in the range
1239: 0..3
1240:
1241: Variables controlling indentation style:
1242: `forth-indent-words'
1243: List of words that influence indentation.
1244: forth-local-indent-words
1245: List of words to prepend to `forth-indent-words', similar to
1246: forth-local-words. Should be used for specifying file-specific
1247: indentation, using a local variables list.
1248: forth-custom-indent-words
1249: List of words to prepend to `forth-indent-words'. Should be set in your
1250: .emacs.
1251: forth-indent-level
1252: Indentation increment/decrement of Forth statements.
1253: forth-minor-indent-level
1254: Minor indentation increment/decrement of Forth statemens.
1255:
1256: Variables controlling block-file editing:
1257: forth-show-screen
1258: Non-nil means, that the start of the current screen is marked by an
1259: overlay arrow, and screen numbers are displayed in the mode line.
1260: This variable is by default nil for `forth-mode' and t for
1261: `forth-block-mode'.
1262: forth-overlay-arrow-string
1263: String to display as the overlay arrow, when `forth-show-screen' is t.
1264: Setting this variable to nil disables the overlay arrow.
1265: forth-block-base
1266: Screen number of the first block in a block file. Defaults to 1.
1267: forth-warn-long-lines
1268: Non-nil means that a warning message is displayed whenever you edit or
1269: move over a line that is longer than 64 characters (the maximum line
1270: length that can be stored into a block file). This variable defaults to
1271: t for `forth-block-mode' and to nil for `forth-mode'.
1272:
1273: Variables controlling interaction with the Forth-process (also see
1274: `run-forth'):
1275: forth-program-name
1276: Program invoked by the `run-forth' command (including arguments).
1277: inferior-forth-mode-hook
1278: Hook for customising inferior-forth-mode.
1279: forth-compile-command
1280: Default command to execute on `compile'.
1281: "
1282: (interactive)
1283: (kill-all-local-variables)
1284: (use-local-map forth-mode-map)
1285: (setq mode-name "Forth")
1286: (setq major-mode 'forth-mode)
1287: (forth-install-motion-hook)
1288: ;; convert buffer contents from block file format, if necessary
1289: (when (forth-detect-block-file-p)
1290: (widen)
1291: (message "Converting from Forth block source...")
1292: (forth-convert-from-block (point-min) (point-max))
1293: (message "Converting from Forth block source...done"))
1294: ;; if user switched from forth-block-mode to forth-mode, make sure the file
1295: ;; is now stored as normal strem source
1296: (when (equal buffer-file-format '(forth-blocks))
1297: (setq buffer-file-format nil))
1298: (forth-mode-variables)
1299: ; (if (not (forth-process-running-p))
1300: ; (run-forth forth-program-name))
1301: (run-hooks 'forth-mode-hook))
1302:
1303: ;;;###autoload
1304: (define-derived-mode forth-block-mode forth-mode "Forth Block Source"
1305: "Major mode for editing Forth block source files, derived from
1306: `forth-mode'. Differences to `forth-mode' are:
1307: * files are converted to block format, when written (`buffer-file-format'
1308: is set to `(forth-blocks)')
1309: * `forth-show-screen' and `forth-warn-long-lines' are t by default
1310:
1311: Note that the length of lines in block files is limited to 64 characters.
1312: When writing longer lines to a block file, a warning is displayed in the
1313: echo area and the line is truncated.
1314:
1315: Another problem is imposed by block files that contain newline or tab
1316: characters. When Emacs converts such files back to block file format,
1317: it'll translate those characters to a number of spaces. However, when
1318: you read such a file, a warning message is displayed in the echo area,
1319: including a line number that may help you to locate and fix the problem.
1320:
1321: So have a look at the *Messages* buffer, whenever you hear (or see) Emacs'
1322: bell during block file read/write operations."
1323: (setq buffer-file-format '(forth-blocks))
1324: (setq forth-show-screen t)
1325: (setq forth-warn-long-lines t)
1326: (setq forth-screen-number-string (format "%d" forth-block-base))
1327: (setq mode-line-format (append (reverse (cdr (reverse mode-line-format)))
1328: '("--S" forth-screen-number-string "-%-"))))
1329:
1330: (add-hook 'forth-mode-hook
1331: '(lambda ()
1332: (make-local-variable 'compile-command)
1333: (setq compile-command "gforth ")
1334: (forth-hack-local-variables)
1335: (forth-customize-words)
1336: (forth-compile-words)
1337: (unless (and forth-jit-parser (>= emacs-major-version 21))
1338: (forth-change-function (point-min) (point-max) nil t))))
1339:
1340: (defun forth-fill-paragraph ()
1341: "Fill comments (starting with '\'; do not fill code (block style
1342: programmers who tend to fill code won't use emacs anyway:-)."
1343: ; Currently only comments at the start of the line are filled.
1344: ; Something like lisp-fill-paragraph may be better. We cannot use
1345: ; fill-paragraph, because it removes the \ from the first comment
1346: ; line. Therefore we have to look for the first line of the comment
1347: ; and use fill-region.
1348: (interactive)
1349: (save-excursion
1350: (beginning-of-line)
1351: (while (and
1352: (= (forward-line -1) 0)
1353: (looking-at "[ \t]*\\\\g?[ \t]+")))
1354: (if (not (looking-at "[ \t]*\\\\g?[ \t]+"))
1355: (forward-line 1))
1356: (let ((from (point))
1357: (to (save-excursion (forward-paragraph) (point))))
1358: (if (looking-at "[ \t]*\\\\g?[ \t]+")
1359: (progn (goto-char (match-end 0))
1360: (set-fill-prefix)
1361: (fill-region from to nil))))))
1362:
1363: (defun forth-comment-indent ()
1364: (save-excursion
1365: (beginning-of-line)
1366: (if (looking-at ":[ \t]*")
1367: (progn
1368: (end-of-line)
1369: (skip-chars-backward " \t\n")
1370: (1+ (current-column)))
1371: comment-column)))
1372:
1373:
1374: ;; Forth commands
1375:
1376: (defun forth-remove-tracers ()
1377: "Remove tracers of the form `~~ '. Queries the user for each occurrence."
1378: (interactive)
1379: (query-replace-regexp "\\(~~ \\| ~~$\\)" "" nil))
1380:
1381: (define-key forth-mode-map "\C-x\C-e" 'compile)
1382: (define-key forth-mode-map "\C-x\C-n" 'next-error)
1383: (require 'compile)
1384:
1385: (defvar forth-compile-command "gforth ")
1386: ;(defvar forth-compilation-window-percent-height 30)
1387:
1388: (defun forth-split ()
1389: (interactive)
1390: (forth-split-1 "*forth*"))
1391:
1392: (defun forth-split-1 (buffer)
1393: (if (not (eq (window-buffer) (get-buffer buffer)))
1394: (progn
1395: (delete-other-windows)
1396: (split-window-vertically
1397: (/ (frame-height) 2))
1398: (other-window 1)
1399: (switch-to-buffer buffer)
1400: (goto-char (point-max))
1401: (other-window 1))))
1402:
1403: ;;; Forth menu
1404: ;;; Mikael Karlsson <qramika@eras70.ericsson.se>
1405:
1406: ;; (dk) code commented out due to complaints of XEmacs users. After
1407: ;; all, there's imenu/speedbar, which uses much smarter scanning
1408: ;; rules.
1409:
1410: ;; (cond ((string-match "XEmacs\\|Lucid" emacs-version)
1411: ;; (require 'func-menu)
1412:
1413: ;; (defconst fume-function-name-regexp-forth
1414: ;; "^\\(:\\)[ \t]+\\([^ \t]*\\)"
1415: ;; "Expression to get word definitions in Forth.")
1416:
1417: ;; (setq fume-function-name-regexp-alist
1418: ;; (append '((forth-mode . fume-function-name-regexp-forth)
1419: ;; ) fume-function-name-regexp-alist))
1420:
1421: ;; ;; Find next forth word in the buffer
1422: ;; (defun fume-find-next-forth-function-name (buffer)
1423: ;; "Searches for the next forth word in BUFFER."
1424: ;; (set-buffer buffer)
1425: ;; (if (re-search-forward fume-function-name-regexp nil t)
1426: ;; (let ((beg (match-beginning 2))
1427: ;; (end (match-end 2)))
1428: ;; (cons (buffer-substring beg end) beg))))
1429:
1430: ;; (setq fume-find-function-name-method-alist
1431: ;; (append '((forth-mode . fume-find-next-forth-function-name))))
1432:
1433: ;; ))
1434: ;;; End Forth menu
1435:
1436: ;;; File folding of forth-files
1437: ;;; uses outline
1438: ;;; Toggle activation with M-x fold-f (when editing a forth-file)
1439: ;;; Use f9 to expand, f10 to hide, Or the menubar in xemacs
1440: ;;;
1441: ;;; Works most of the times but loses sync with the cursor occasionally
1442: ;;; Could be improved by also folding on comments
1443:
1444: ;; (dk) This code needs a rewrite; just too ugly and doesn't use the
1445: ;; newer and smarter scanning rules of `imenu'. Who needs it anyway??
1446:
1447: ;; (require 'outline)
1448:
1449: ;; (defun f-outline-level ()
1450: ;; (cond ((looking-at "\\`\\\\")
1451: ;; 0)
1452: ;; ((looking-at "\\\\ SEC")
1453: ;; 0)
1454: ;; ((looking-at "\\\\ \\\\ .*")
1455: ;; 0)
1456: ;; ((looking-at "\\\\ DEFS")
1457: ;; 1)
1458: ;; ((looking-at "\\/\\* ")
1459: ;; 1)
1460: ;; ((looking-at ": .*")
1461: ;; 1)
1462: ;; ((looking-at "\\\\G")
1463: ;; 2)
1464: ;; ((looking-at "[ \t]+\\\\")
1465: ;; 3)))
1466:
1467: ;; (defun fold-f ()
1468: ;; (interactive)
1469: ;; (add-hook 'outline-minor-mode-hook 'hide-body)
1470:
1471: ;; ; outline mode header start, i.e. find word definitions
1472: ;; ;;; (setq outline-regexp "^\\(:\\)[ \t]+\\([^ \t]*\\)")
1473: ;; (setq outline-regexp "\\`\\\\\\|:\\|\\\\ SEC\\|\\\\G\\|[ \t]+\\\\\\|\\\\ DEFS\\|\\/\\*\\|\\\\ \\\\ .*")
1474: ;; (setq outline-level 'f-outline-level)
1475:
1476: ;; (outline-minor-mode)
1477: ;; (define-key outline-minor-mode-map '(shift up) 'hide-sublevels)
1478: ;; (define-key outline-minor-mode-map '(shift right) 'show-children)
1479: ;; (define-key outline-minor-mode-map '(shift left) 'hide-subtree)
1480: ;; (define-key outline-minor-mode-map '(shift down) 'show-subtree))
1481:
1482:
1483: ;;(define-key global-map '(shift up) 'fold-f)
1484:
1485: ;;; end file folding
1486:
1487: ;;; func-menu is a package that scans your source file for function definitions
1488: ;;; and makes a menubar entry that lets you jump to any particular function
1489: ;;; definition by selecting it from the menu. The following code turns this on
1490: ;;; for all of the recognized languages. Scanning the buffer takes some time,
1491: ;;; but not much.
1492: ;;;
1493: ;; (cond ((string-match "XEmacs\\|Lucid" emacs-version)
1494: ;; (require 'func-menu)
1495: ;; ;; (define-key global-map 'f8 'function-menu)
1496: ;; (add-hook 'find-fible-hooks 'fume-add-menubar-entry)
1497: ;; ; (define-key global-map "\C-cg" 'fume-prompt-function-goto)
1498: ;; ; (define-key global-map '(shift button3) 'mouse-function-menu)
1499: ;; ))
1500:
1501: ;;;
1502: ;;; Inferior Forth interpreter
1503: ;;; -- mostly copied from `cmuscheme.el' of Emacs 21.2
1504: ;;;
1505:
1506: (eval-and-compile (forth-require 'comint))
1507:
1508: (when (memq 'comint features)
1509:
1510: (defvar forth-program-name "gforth"
1511: "*Program invoked by the `run-forth' command, including program arguments")
1512:
1513: (defcustom inferior-forth-mode-hook nil
1514: "*Hook for customising inferior-forth-mode."
1515: :type 'hook
1516: :group 'forth)
1517:
1518: (defvar inferior-forth-mode-map
1519: (let ((m (make-sparse-keymap)))
1520: (define-key m "\r" 'comint-send-input)
1521: (define-key m "\M-\C-x" 'forth-send-paragraph-and-go)
1522: (define-key m "\C-c\C-l" 'forth-load-file)
1523: m))
1524: ;; Install the process communication commands in the forth-mode keymap.
1525: (define-key forth-mode-map "\e\C-m" 'forth-send-paragraph-and-go)
1526: (define-key forth-mode-map "\eo" 'forth-send-buffer-and-go)
1527:
1528: (define-key forth-mode-map "\M-\C-x" 'forth-send-paragraph-and-go)
1529: (define-key forth-mode-map "\C-c\C-r" 'forth-send-region)
1530: (define-key forth-mode-map "\C-c\M-r" 'forth-send-region-and-go)
1531: (define-key forth-mode-map "\C-c\C-z" 'forth-switch-to-interactive)
1532: (define-key forth-mode-map "\C-c\C-l" 'forth-load-file)
1533:
1534: (defvar forth-process-buffer)
1535:
1536: (define-derived-mode inferior-forth-mode comint-mode "Inferior Forth"
1537: "Major mode for interacting with an inferior Forth process.
1538:
1539: The following commands are available:
1540: \\{inferior-forth-mode-map}
1541:
1542: A Forth process can be fired up with M-x run-forth.
1543:
1544: Customisation: Entry to this mode runs the hooks on comint-mode-hook and
1545: inferior-forth-mode-hook (in that order).
1546:
1547: You can send text to the inferior Forth process from other buffers containing
1548: Forth source.
1549: forth-switch-to-interactive switches the current buffer to the Forth
1550: process buffer.
1551: forth-send-paragraph sends the current paragraph to the Forth process.
1552: forth-send-region sends the current region to the Forth process.
1553: forth-send-buffer sends the current buffer to the Forth process.
1554:
1555: forth-send-paragraph-and-go, forth-send-region-and-go,
1556: forth-send-buffer-and-go switch to the Forth process buffer after
1557: sending their text.
1558: For information on running multiple processes in multiple buffers, see
1559: documentation for variable `forth-process-buffer'.
1560:
1561: Commands:
1562: Return after the end of the process' output sends the text from the
1563: end of process to point. If you accidentally suspend your process, use
1564: \\[comint-continue-subjob] to continue it. "
1565: ;; Customise in inferior-forth-mode-hook
1566: (setq comint-prompt-regexp "^")
1567: (setq mode-line-process '(":%s")))
1568:
1569: (defun forth-args-to-list (string)
1570: (let ((where (string-match "[ \t]" string)))
1571: (cond ((null where) (list string))
1572: ((not (= where 0))
1573: (cons (substring string 0 where)
1574: (forth-args-to-list (substring string (+ 1 where)
1575: (length string)))))
1576: (t (let ((pos (string-match "[^ \t]" string)))
1577: (if (null pos)
1578: nil
1579: (forth-args-to-list (substring string pos
1580: (length string)))))))))
1581:
1582: ;;;###autoload
1583: (defun run-forth (cmd)
1584: "Run an inferior Forth process, input and output via buffer *forth*.
1585: If there is a process already running in `*forth*', switch to that buffer.
1586: With argument, allows you to edit the command line (default is value
1587: of `forth-program-name'). Runs the hooks `inferior-forth-mode-hook'
1588: \(after the `comint-mode-hook' is run).
1589: \(Type \\[describe-mode] in the process buffer for a list of commands.)"
1590:
1591: (interactive (list (if current-prefix-arg
1592: (read-string "Run Forth: " forth-program-name)
1593: forth-program-name)))
1594: (if (not (comint-check-proc "*forth*"))
1595: (let ((cmdlist (forth-args-to-list cmd)))
1596: (set-buffer (apply 'make-comint "forth" (car cmdlist)
1597: nil (cdr cmdlist)))
1598: (inferior-forth-mode)))
1599: (setq forth-program-name cmd)
1600: (setq forth-process-buffer "*forth*")
1601: (pop-to-buffer "*forth*"))
1602:
1603: (defun forth-send-region (start end)
1604: "Send the current region to the inferior Forth process."
1605: (interactive "r")
1606: (comint-send-region (forth-proc) start end)
1607: (comint-send-string (forth-proc) "\n"))
1608:
1609: (defun forth-end-of-paragraph ()
1610: (if (looking-at "[\t\n ]+") (skip-chars-backward "\t\n "))
1611: (if (not (re-search-forward "\n[ \t]*\n" nil t))
1612: (goto-char (point-max))))
1613:
1614: (defun forth-send-paragraph ()
1615: "Send the current or the previous paragraph to the Forth process"
1616: (interactive)
1617: (let (end)
1618: (save-excursion
1619: (forth-end-of-paragraph)
1620: (skip-chars-backward "\t\n ")
1621: (setq end (point))
1622: (if (null (re-search-backward "\n[ \t]*\n" nil t))
1623: (goto-char (point-min)))
1624: (skip-chars-forward "\t\n ")
1625: (forth-send-region (point) end))))
1626:
1627: (defun forth-send-paragraph-and-go ()
1628: "Send the current or the previous paragraph to the Forth process.
1629: Then switch to the process buffer."
1630: (interactive)
1631: (forth-send-paragraph)
1632: (forth-switch-to-interactive t))
1633:
1634: (defun forth-send-buffer ()
1635: "Send the current buffer to the Forth process."
1636: (interactive)
1637: (if (eq (current-buffer) forth-process-buffer)
1638: (error "Not allowed to send this buffer's contents to Forth"))
1639: (forth-send-region (point-min) (point-max)))
1640:
1641: (defun forth-send-buffer-and-go ()
1642: "Send the current buffer to the Forth process.
1643: Then switch to the process buffer."
1644: (interactive)
1645: (forth-send-buffer)
1646: (forth-switch-to-interactive t))
1647:
1648:
1649: (defun forth-switch-to-interactive (eob-p)
1650: "Switch to the Forth process buffer.
1651: With argument, position cursor at end of buffer."
1652: (interactive "P")
1653: (if (get-buffer forth-process-buffer)
1654: (pop-to-buffer forth-process-buffer)
1655: (error "No current process buffer. See variable `forth-process-buffer'"))
1656: (cond (eob-p
1657: (push-mark)
1658: (goto-char (point-max)))))
1659:
1660: (defun forth-send-region-and-go (my-start end)
1661: "Send the current region to the inferior Forth process.
1662: Then switch to the process buffer."
1663: (interactive "r")
1664: (forth-send-region my-start end)
1665: (forth-switch-to-interactive t))
1666:
1667: (defcustom forth-source-modes '(forth-mode forth-block-mode)
1668: "*Used to determine if a buffer contains Forth source code.
1669: If it's loaded into a buffer that is in one of these major modes, it's
1670: considered a Forth source file by `forth-load-file' and `forth-compile-file'.
1671: Used by these commands to determine defaults."
1672: :type '(repeat function)
1673: :group 'forth)
1674:
1675: (defvar forth-prev-l/c-dir/file nil
1676: "Caches the last (directory . file) pair.
1677: Caches the last pair used in the last `forth-load-file' or
1678: `forth-compile-file' command. Used for determining the default in the
1679: next one.")
1680:
1681: (defun forth-load-file (file-name)
1682: "Load a Forth file FILE-NAME into the inferior Forth process."
1683: (interactive (comint-get-source "Load Forth file: " forth-prev-l/c-dir/file
1684: forth-source-modes t)) ; T because LOAD
1685: ; needs an exact name
1686: (comint-check-source file-name) ; Check to see if buffer needs saved.
1687: (setq forth-prev-l/c-dir/file (cons (file-name-directory file-name)
1688: (file-name-nondirectory file-name)))
1689: (comint-send-string (forth-proc)
1690: (concat "s\" " file-name "\" included\n")))
1691:
1692:
1693: (defvar forth-process-buffer nil "*The current Forth process buffer.
1694:
1695: See `scheme-buffer' for an explanation on how to run multiple Forth
1696: processes.")
1697:
1698: (defun forth-proc ()
1699: "Return the current Forth process. See variable `forth-process-buffer'."
1700: (let ((proc (get-buffer-process (if (eq major-mode 'inferior-forth-mode)
1701: (current-buffer)
1702: forth-process-buffer))))
1703: (or proc
1704: (error "No current process. See variable `forth-process-buffer'"))))
1705: ) ; (memq 'comint features)
1706:
1707: (provide 'forth-mode)
1708:
1709: ;;; gforth.el ends here
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