Annotation of gforth/gforth.el, revision 1.57

1.48      pazsan      1: ;;; gforth.el --- major mode for editing (G)Forth sources
1.31      anton       2: 
1.54      dvdkhlng    3: ;; Copyright (C) 1995,1996,1997,1998,2000,2001 Free Software Foundation, Inc.
1.31      anton       4: 
                      5: ;; This file is part of Gforth.
1.1       anton       6: 
1.17      anton       7: ;; GForth is distributed in the hope that it will be useful,
1.1       anton       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
1.17      anton      17: ;; supposed to have been given to you along with Gforth so you
1.1       anton      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.
1.31      anton      21: 
1.48      pazsan     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: 
1.31      anton      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.
1.1       anton      32: 
1.48      pazsan     33: ;; Changes by David
                     34: ;; Added a syntax-hilighting engine, rewrote auto-indentation engine.
                     35: ;; Added support for block files.
                     36:  
1.1       anton      37: ;;-------------------------------------------------------------------
                     38: ;; A Forth indentation, documentation search and interaction library
                     39: ;;-------------------------------------------------------------------
                     40: ;;
                     41: ;; Written by Goran Rydqvist, gorry@ida.liu.se, Summer 1988
                     42: ;; Started:    16 July 88
                     43: ;; Version:    2.10
                     44: ;; Last update:        5 December 1989 by Mikael Patel, mip@ida.liu.se
                     45: ;; Last update:        25 June 1990 by Goran Rydqvist, gorry@ida.liu.se
                     46: ;;
                     47: ;; Documentation: See forth-mode (^HF forth-mode)
                     48: ;;-------------------------------------------------------------------
                     49: 
1.48      pazsan     50: ;;; Code:
                     51: 
1.55      dvdkhlng   52: ;; Code ripped from `version.el' for compatability with Emacs versions
                     53: ;; prior to 19.23.
                     54: (unless (boundp 'emacs-major-version)
                     55:   (defconst emacs-major-version
                     56:     (progn (string-match "^[0-9]+" emacs-version)
                     57:           (string-to-int (match-string 0 emacs-version)))))
                     58: 
1.48      pazsan     59: 
1.57    ! dvdkhlng   60: ; todo:
        !            61: ;
        !            62: 
        !            63: ; Wörter ordentlich hilighten, die nicht auf Whitespace beginnen ( ..)IF
        !            64: ; -- mit aktueller Konzeption nicht möglich??
        !            65: ;
        !            66: ; Konfiguration über customization groups
        !            67: ;
        !            68: ; Bereich nur auf Wortanfang/ende ausweiten, wenn Anfang bzw Ende in einem 
        !            69: ; Wort liegen (?) -- speed!
        !            70: ;
        !            71: ; 'forth-word' property muss eindeutig sein!
        !            72: ;
        !            73: ; Forth-Menu 
        !            74: ;
        !            75: ; Interface zu GForth Prozessen (Patches von Michael Scholz)
        !            76: ;
        !            77: ; Byte-compile-Code rausschmeißen, Compilieren im Makefile über Emacs
        !            78: ; batch-Modus
        !            79: ;
        !            80: ; forth-help Kram rausschmeißen
        !            81: ;
        !            82: ; XEmacs Kompatibilität? imenu/speedbar -> fume?
        !            83: ; 
        !            84: ; Folding neuschreiben (neue Parser-Informationen benutzen)
        !            85: 
1.48      pazsan     86: ;;; Hilighting and indentation engine                          (dk)
                     87: ;;;
1.57    ! dvdkhlng   88: (require 'font-lock)
1.48      pazsan     89: 
1.55      dvdkhlng   90: (defvar forth-disable-parser nil
                     91:   "*Non-nil means to disable on-the-fly parsing of Forth-code.
                     92: 
                     93: This will disable hilighting of forth-mode buffers and will decrease
                     94: the smartness of the indentation engine. Only set it to non-nil, if
                     95: your computer is very slow. To disable hilighting, set
                     96: `forth-hilight-level' to zero.")
                     97: 
                     98: (defvar forth-jit-parser nil
                     99:   "*Non-nil means to parse Forth-code just-in-time.
                    100: 
                    101: This eliminates the need for initially parsing forth-mode buffers and
                    102: thus speeds up loading of Forth files. That feature is only available
                    103: in Emacs21 (and newer versions).")
                    104: 
1.48      pazsan    105: (defvar forth-words nil 
                    106:   "List of words for hilighting and recognition of parsed text areas. 
1.55      dvdkhlng  107: 
                    108: Hilighting of object-oriented Forth code is achieved, by appending either
                    109: `forth-objects-words' or `forth-oof-words' to the list, depending on the values of `forth-use-objects' or `forth-use-oof'.
                    110: 
                    111: After `forth-words' changed, `forth-compile-words' must be called to
                    112: make the changes take effect.
1.48      pazsan    113: 
                    114: Each item of `forth-words' has the form 
                    115:    (MATCHER TYPE HILIGHT . &optional PARSED-TEXT ...)
                    116: 
                    117: MATCHER is either a list of strings to match, or a REGEXP.
                    118:    If it's a REGEXP, it should not be surrounded by '\\<' or '\\>', since 
                    119:    that'll be done automatically by the search routines.
                    120: 
                    121: TYPE should be one of 'definiton-starter', 'definition-ender', 'compile-only',
                    122:    'immediate' or 'non-immediate'. Those information are required to determine
                    123:    whether a word actually parses (and whether that parsed text needs to be
                    124:    hilighted).
                    125: 
                    126: HILIGHT is a cons cell of the form (FACE . MINIMUM-LEVEL)
                    127:    Where MINIMUM-LEVEL specifies the minimum value of `forth-hilight-level',
                    128:    that's required for matching text to be hilighted.
                    129: 
                    130: PARSED-TEXT specifies whether and how a word parses following text. You can
                    131:    specify as many subsequent PARSED-TEXT as you wish, but that shouldn't be
                    132:    necessary very often. It has the following form:
                    133:    (DELIM-REGEXP SKIP-LEADING-FLAG PARSED-TYPE HILIGHT)
                    134: 
                    135: DELIM-REGEXP is a regular expression that should match strings of length 1,
                    136:    which are delimiters for the parsed text.
                    137: 
                    138: A non-nil value for PARSE-LEADING-FLAG means, that leading delimiter strings
                    139:    before parsed text should be skipped. This is the parsing behaviour of the
                    140:    Forth word WORD. Set it to t for name-parsing words, nil for comments and
                    141:    strings.
                    142: 
                    143: PARSED-TYPE specifies what kind of text is parsed. It should be on of 'name',
                    144:    'string' or 'comment'.")
                    145: (setq forth-words
                    146:       '(
                    147:        (("[") definition-ender (font-lock-keyword-face . 1))
                    148:        (("]" "]l") definition-starter (font-lock-keyword-face . 1))
                    149:        ((":") definition-starter (font-lock-keyword-face . 1)
                    150:         "[ \t\n]" t name (font-lock-function-name-face . 3))
                    151:        (("immediate" "compile-only" "restrict")
                    152:         immediate (font-lock-keyword-face . 1))
                    153:        (("does>") compile-only (font-lock-keyword-face . 1))
                    154:        ((":noname") definition-starter (font-lock-keyword-face . 1))
                    155:        ((";" ";code") definition-ender (font-lock-keyword-face . 1))
                    156:        (("include" "require" "needs" "use") 
                    157:         non-immediate (font-lock-keyword-face . 1) 
                    158:         "[\n\t ]" t string (font-lock-string-face . 1))
                    159:        (("included" "required" "thru" "load")
                    160:         non-immediate (font-lock-keyword-face . 1))
                    161:        (("[char]") compile-only (font-lock-keyword-face . 1)
                    162:         "[ \t\n]" t string (font-lock-string-face . 1))
                    163:        (("char") non-immediate (font-lock-keyword-face . 1)
                    164:         "[ \t\n]" t string (font-lock-string-face . 1))
                    165:        (("s\"" "c\"") immediate (font-lock-string-face . 1)
                    166:         "[\"\n]" nil string (font-lock-string-face . 1))
                    167:        ((".\"") compile-only (font-lock-string-face . 1)
                    168:         "[\"\n]" nil string (font-lock-string-face . 1))
                    169:        (("abort\"") compile-only (font-lock-keyword-face . 1)
                    170:         "[\"\n]" nil string (font-lock-string-face . 1))
                    171:        (("{") compile-only (font-lock-variable-name-face . 1)
                    172:         "[\n}]" nil name (font-lock-variable-name-face . 1))
                    173:        ((".(" "(") immediate (font-lock-comment-face . 1)
                    174:          ")" nil comment (font-lock-comment-face . 1))
                    175:        (("\\" "\\G") immediate (font-lock-comment-face . 1)
                    176:         "[\n]" nil comment (font-lock-comment-face . 1))
                    177:          
                    178:        (("[if]" "[?do]" "[do]" "[for]" "[begin]" 
                    179:          "[endif]" "[then]" "[loop]" "[+loop]" "[next]" "[until]" "[repeat]"
                    180:          "[again]" "[while]" "[else]")
                    181:         immediate (font-lock-keyword-face . 2))
                    182:        (("[ifdef]" "[ifundef]") immediate (font-lock-keyword-face . 2)
                    183:         "[ \t\n]" t name (font-lock-function-name-face . 3))
                    184:        (("if" "begin" "ahead" "do" "?do" "+do" "u+do" "-do" "u-do" "for" 
                    185:          "case" "of" "?dup-if" "?dup-0=-if" "then" "until" "repeat" "again" 
                    186:          "loop" "+loop" "-loop" "next" "endcase" "endof" "else" "while" "try"
                    187:          "recover" "endtry" "assert(" "assert0(" "assert1(" "assert2(" 
                    188:          "assert3(" ")" "<interpretation" "<compilation" "interpretation>" 
                    189:          "compilation>")
                    190:         compile-only (font-lock-keyword-face . 2))
                    191: 
                    192:        (("true" "false" "c/l" "bl" "cell" "pi" "w/o" "r/o" "r/w") 
                    193:         non-immediate (font-lock-constant-face . 2))
1.56      dvdkhlng  194:        (("~~" "break:" "dbg") compile-only (font-lock-warning-face . 2))
1.55      dvdkhlng  195:        (("break\"") compile-only (font-lock-warning-face . 1)
                    196:         "[\"\n]" nil string (font-lock-string-face . 1))
1.48      pazsan    197:        (("postpone" "[is]" "defers" "[']" "[compile]") 
                    198:         compile-only (font-lock-keyword-face . 2)
                    199:         "[ \t\n]" t name (font-lock-function-name-face . 3))
                    200:        (("is" "what's") immediate (font-lock-keyword-face . 2)
                    201:         "[ \t\n]" t name (font-lock-function-name-face . 3))
1.56      dvdkhlng  202:        (("<is>" "'" "see") non-immediate (font-lock-keyword-face . 2)
1.48      pazsan    203:         "[ \t\n]" t name (font-lock-function-name-face . 3))
                    204:        (("[to]") compile-only (font-lock-keyword-face . 2)
                    205:         "[ \t\n]" t name (font-lock-variable-name-face . 3))
                    206:        (("to") immediate (font-lock-keyword-face . 2)
                    207:         "[ \t\n]" t name (font-lock-variable-name-face . 3))
                    208:        (("<to>") non-immediate (font-lock-keyword-face . 2)
                    209:         "[ \t\n]" t name (font-lock-variable-name-face . 3))
                    210: 
                    211:        (("create" "variable" "constant" "2variable" "2constant" "fvariable"
                    212:          "fconstant" "value" "field" "user" "vocabulary" 
                    213:          "create-interpret/compile")
                    214:         non-immediate (font-lock-type-face . 2)
                    215:         "[ \t\n]" t name (font-lock-variable-name-face . 3))
1.54      dvdkhlng  216:        ("\\S-+%" non-immediate (font-lock-type-face . 2))
1.48      pazsan    217:        (("defer" "alias" "create-interpret/compile:") 
                    218:         non-immediate (font-lock-type-face . 1)
                    219:         "[ \t\n]" t name (font-lock-function-name-face . 3))
                    220:        (("end-struct") non-immediate (font-lock-keyword-face . 2)
                    221:         "[ \t\n]" t name (font-lock-type-face . 3))
                    222:        (("struct") non-immediate (font-lock-keyword-face . 2))
                    223:        ("-?[0-9]+\\(\\.[0-9]*e\\(-?[0-9]+\\)?\\|\\.?[0-9a-f]*\\)" 
                    224:         immediate (font-lock-constant-face . 3))
                    225:        ))
                    226: 
1.51      dvdkhlng  227: (defvar forth-use-objects nil 
                    228:   "*Non-nil makes forth-mode also hilight words from the \"Objects\" package.")
1.57    ! dvdkhlng  229: (defvar forth-objects-words
        !           230:   '(((":m") definition-starter (font-lock-keyword-face . 1)
        !           231:      "[ \t\n]" t name (font-lock-function-name-face . 3))
        !           232:     (("m:") definition-starter (font-lock-keyword-face . 1))
        !           233:     ((";m") definition-ender (font-lock-keyword-face . 1))
        !           234:     (("[current]" "[parent]") compile-only (font-lock-keyword-face . 1)
        !           235:      "[ \t\n]" t name (font-lock-function-name-face . 3))
        !           236:     (("current" "overrides") non-immediate (font-lock-keyword-face . 2)
        !           237:      "[ \t\n]" t name (font-lock-function-name-face . 3))
        !           238:     (("[to-inst]") compile-only (font-lock-keyword-face . 2)
        !           239:      "[ \t\n]" t name (font-lock-variable-name-face . 3))
        !           240:     (("[bind]") compile-only (font-lock-keyword-face . 2)
        !           241:      "[ \t\n]" t name (font-lock-type-face . 3)
        !           242:      "[ \t\n]" t name (font-lock-function-name-face . 3))
        !           243:     (("bind") non-immediate (font-lock-keyword-face . 2)
        !           244:      "[ \t\n]" t name (font-lock-type-face . 3)
        !           245:      "[ \t\n]" t name (font-lock-function-name-face . 3))
        !           246:     (("inst-var" "inst-value") non-immediate (font-lock-type-face . 2)
        !           247:      "[ \t\n]" t name (font-lock-variable-name-face . 3))
        !           248:     (("method" "selector")
        !           249:      non-immediate (font-lock-type-face . 1)
        !           250:      "[ \t\n]" t name (font-lock-function-name-face . 3))
        !           251:     (("end-class" "end-interface")
        !           252:      non-immediate (font-lock-keyword-face . 2)
        !           253:      "[ \t\n]" t name (font-lock-type-face . 3))
        !           254:     (("public" "protected" "class" "exitm" "implementation" "interface"
        !           255:       "methods" "end-methods" "this") 
        !           256:      non-immediate (font-lock-keyword-face . 2))
        !           257:     (("object") non-immediate (font-lock-type-face . 2)))
1.51      dvdkhlng  258:   "Hilighting description for words of the \"Objects\" package")
1.57    ! dvdkhlng  259: 
1.48      pazsan    260: 
1.51      dvdkhlng  261: (defvar forth-use-oof nil 
                    262:   "*Non-nil makes forth-mode also hilight words from the \"OOF\" package.")
1.57    ! dvdkhlng  263: (defvar forth-oof-words 
        !           264:   '((("class") non-immediate (font-lock-keyword-face . 2)
        !           265:      "[ \t\n]" t name (font-lock-type-face . 3))
        !           266:     (("var") non-immediate (font-lock-type-face . 2)
        !           267:      "[ \t\n]" t name (font-lock-variable-name-face . 3))
        !           268:     (("method" "early") non-immediate (font-lock-type-face . 2)
        !           269:      "[ \t\n]" t name (font-lock-function-name-face . 3))
        !           270:     (("::" "super" "bind" "bound" "link") 
        !           271:      immediate (font-lock-keyword-face . 2)
        !           272:      "[ \t\n]" t name (font-lock-function-name-face . 3))
        !           273:     (("ptr" "asptr" "[]") 
        !           274:      immediate (font-lock-keyword-face . 2)
        !           275:      "[ \t\n]" t name (font-lock-variable-name-face . 3))
        !           276:     (("class;" "how:" "self" "new" "new[]" "definitions" "class?" "with"
        !           277:       "endwith")
        !           278:      non-immediate (font-lock-keyword-face . 2))
        !           279:     (("object") non-immediate (font-lock-type-face . 2)))
1.51      dvdkhlng  280:   "Hilighting description for words of the \"OOF\" package")
1.48      pazsan    281: 
1.49      dvdkhlng  282: (defvar forth-local-words nil 
                    283:   "List of Forth words to prepend to `forth-words'. Should be set by a 
1.51      dvdkhlng  284:  forth source, using a local variables list at the end of the file 
                    285:  (\"Local Variables: ... forth-local-words: ... End:\" construct).") 
                    286: 
                    287: (defvar forth-custom-words nil
                    288:   "List of Forth words to prepend to `forth-words'. Should be set in your
                    289:  .emacs.")
1.49      dvdkhlng  290: 
1.48      pazsan    291: (defvar forth-hilight-level 3 "*Level of hilighting of Forth code.")
1.51      dvdkhlng  292: 
1.48      pazsan    293: (defvar forth-compiled-words nil "Compiled representation of `forth-words'.")
                    294: 
1.57    ! dvdkhlng  295: (defvar forth-indent-words nil 
        !           296:   "List of words that have indentation behaviour.
        !           297: Each element of `forth-indent-words' should have the form
        !           298:    (MATCHER INDENT1 INDENT2 &optional TYPE) 
        !           299:   
        !           300: MATCHER is either a list of strings to match, or a REGEXP.
        !           301:    If it's a REGEXP, it should not be surrounded by `\\<` or `\\>`, since 
        !           302:    that'll be done automatically by the search routines.
        !           303: 
        !           304: TYPE might be omitted. If it's specified, the only allowed value is 
        !           305:    currently the symbol `non-immediate', meaning that the word will not 
        !           306:    have any effect on indentation inside definitions. (:NONAME is a good 
        !           307:    example for this kind of word).
        !           308: 
        !           309: INDENT1 specifies how to indent a word that's located at a line's begin,
        !           310:    following any number of whitespaces.
        !           311: 
        !           312: INDENT2 specifies how to indent words that are not located at a line's begin.
        !           313: 
        !           314: INDENT1 and INDENT2 are indentation specifications of the form
        !           315:    (SELF-INDENT . NEXT-INDENT), where SELF-INDENT is a numerical value, 
        !           316:    specifying how the matching line and all following lines are to be 
        !           317:    indented, relative to previous lines. NEXT-INDENT specifies how to indent 
        !           318:    following lines, relative to the matching line.
        !           319:   
        !           320:    Even values of SELF-INDENT and NEXT-INDENT correspond to multiples of
        !           321:    `forth-indent-level'. Odd values get an additional 
        !           322:    `forth-minor-indent-level' added/substracted. Eg a value of -2 indents
        !           323:    1 * forth-indent-level  to the left, wheras 3 indents 
        !           324:    1 * forth-indent-level + forth-minor-indent-level  columns to the right.")
        !           325: 
        !           326: (setq forth-indent-words
        !           327:       '((("if" "begin" "do" "?do" "+do" "-do" "u+do"
        !           328:          "u-do" "?dup-if" "?dup-0=-if" "case" "of" "try" 
        !           329:          "[if]" "[ifdef]" "[ifundef]" "[begin]" "[for]" "[do]" "[?do]")
        !           330:         (0 . 2) (0 . 2))
        !           331:        ((":" ":noname" "code" "struct" "m:" ":m" "class" "interface")
        !           332:         (0 . 2) (0 . 2) non-immediate)
        !           333:        ("\\S-+%$" (0 . 2) (0 . 0) non-immediate)
        !           334:        ((";" ";m") (-2 . 0) (0 . -2))
        !           335:        (("again" "repeat" "then" "endtry" "endcase" "endof" 
        !           336:          "[then]" "[endif]" "[loop]" "[+loop]" "[next]" 
        !           337:          "[until]" "[repeat]" "[again]" "loop")
        !           338:         (-2 . 0) (0 . -2))
        !           339:        (("end-code" "end-class" "end-interface" "end-class-noname" 
        !           340:          "end-interface-noname" "end-struct" "class;")
        !           341:         (-2 . 0) (0 . -2) non-immediate)
        !           342:        (("protected" "public" "how:") (-1 . 1) (0 . 0) non-immediate)
        !           343:        (("+loop" "-loop" "until") (-2 . 0) (-2 . 0))
        !           344:        (("else" "recover" "[else]") (-2 . 2) (0 . 0))
        !           345:        (("while" "does>" "[while]") (-1 . 1) (0 . 0))
        !           346:        (("\\g") (-2 . 2) (0 . 0))))
        !           347: 
        !           348: (defvar forth-local-indent-words nil 
        !           349:   "List of Forth words to prepend to `forth-indent-words', when a forth-mode
        !           350: buffer is created. Should be set by a Forth source, using a local variables 
        !           351: list at the end of the file (\"Local Variables: ... forth-local-words: ... 
        !           352: End:\" construct).")
1.51      dvdkhlng  353: 
1.57    ! dvdkhlng  354: (defvar forth-custom-indent-words nil
        !           355:   "List of Forth words to prepend to `forth-indent-words'. Should be set in
        !           356:  your .emacs.")
1.48      pazsan    357: 
1.57    ! dvdkhlng  358: (defvar forth-indent-level 4
        !           359:   "*Indentation of Forth statements.")
        !           360: (defvar forth-minor-indent-level 2
        !           361:   "*Minor indentation of Forth statements.")
        !           362: (defvar forth-compiled-indent-words nil)
1.48      pazsan    363: 
1.55      dvdkhlng  364: ;(setq debug-on-error t)
1.48      pazsan    365: 
1.50      dvdkhlng  366: ;; Filter list by predicate. This is a somewhat standard function for 
1.48      pazsan    367: ;; functional programming languages. So why isn't it already implemented 
                    368: ;; in Lisp??
1.50      dvdkhlng  369: (defun forth-filter (predicate list)
1.48      pazsan    370:   (let ((filtered nil))
                    371:     (mapcar (lambda (item)
1.50      dvdkhlng  372:              (when (funcall predicate item)
1.48      pazsan    373:                (if filtered
                    374:                    (nconc filtered (list item))
                    375:                  (setq filtered (cons item nil))))
                    376:              nil) list)
                    377:     filtered))
                    378: 
                    379: ;; Helper function for `forth-compile-word': return whether word has to be
                    380: ;; added to the compiled word list, for syntactic parsing and hilighting.
                    381: (defun forth-words-filter (word)
                    382:   (let* ((hilight (nth 2 word))
                    383:         (level (cdr hilight))
                    384:         (parsing-flag (nth 3 word)))
                    385:     (or parsing-flag 
                    386:        (<= level forth-hilight-level))))
                    387: 
                    388: ;; Helper function for `forth-compile-word': translate one entry from 
                    389: ;; `forth-words' into the form  (regexp regexp-depth word-description)
                    390: (defun forth-compile-words-mapper (word)
                    391:   (let* ((matcher (car word))
                    392:         (regexp (if (stringp matcher) (concat "\\(" matcher "\\)")
                    393:                   (if (listp matcher) (regexp-opt matcher t)
                    394:                     (error "Invalid matcher (stringp or listp expected `%s'" 
                    395:                            matcher))))
                    396:         (depth (regexp-opt-depth regexp))
                    397:         (description (cdr word)))
                    398:     (list regexp depth description)))
                    399: 
                    400: ;; Read `words' and create a compiled representation suitable for efficient
                    401: ;; parsing of the form  
                    402: ;; (regexp (subexp-count word-description) (subexp-count2 word-description2)
                    403: ;;  ...)
1.49      dvdkhlng  404: (defun forth-compile-wordlist (words)
1.48      pazsan    405:   (let* ((mapped (mapcar 'forth-compile-words-mapper words))
                    406:         (regexp (concat "\\<\\(" 
                    407:                         (mapconcat 'car mapped "\\|")
                    408:                         "\\)\\>"))
                    409:         (sub-count 2)
                    410:         (sub-list (mapcar 
                    411:                    (lambda (i) 
                    412:                      (let ((sub (cons sub-count (nth 2 i))))
                    413:                        (setq sub-count (+ sub-count (nth 1 i)))
                    414:                        sub 
                    415:                        )) 
                    416:                    mapped)))
                    417:     (let ((result (cons regexp sub-list)))
                    418:       (byte-compile 'result)
                    419:       result)))
                    420: 
1.49      dvdkhlng  421: (defun forth-compile-words ()
                    422:   "Compile the the words from `forth-words' and `forth-indent-words' into
                    423:  the format that's later used for doing the actual hilighting/indentation.
1.51      dvdkhlng  424:  Store the resulting compiled wordlists in `forth-compiled-words' and 
1.49      dvdkhlng  425: `forth-compiled-indent-words', respective"
                    426:   (setq forth-compiled-words 
                    427:        (forth-compile-wordlist 
                    428:         (forth-filter 'forth-words-filter forth-words)))
                    429:   (setq forth-compiled-indent-words 
                    430:        (forth-compile-wordlist forth-indent-words)))
                    431: 
                    432: (defun forth-hack-local-variables ()
1.51      dvdkhlng  433:   "Parse and bind local variables, set in the contents of the current 
                    434:  forth-mode buffer. Prepend `forth-local-words' to `forth-words' and 
                    435:  `forth-local-indent-words' to `forth-indent-words'."
1.49      dvdkhlng  436:   (hack-local-variables)
                    437:   (setq forth-words (append forth-local-words forth-words))
                    438:   (setq forth-indent-words (append forth-local-indent-words 
                    439:                                   forth-indent-words)))
                    440: 
1.51      dvdkhlng  441: (defun forth-customize-words ()
                    442:   "Add the words from `forth-custom-words' and `forth-custom-indent-words'
                    443:  to `forth-words' and `forth-indent-words', respective. Add 
                    444:  `forth-objects-words' and/or `forth-oof-words' to `forth-words', if
                    445:  `forth-use-objects' and/or `forth-use-oof', respective is set."
                    446:   (setq forth-words (append forth-custom-words forth-words
                    447:                            (if forth-use-oof forth-oof-words nil)
                    448:                            (if forth-use-objects forth-objects-words nil)))
                    449:   (setq forth-indent-words (append 
                    450:                            forth-custom-indent-words forth-indent-words)))
                    451: 
                    452: 
                    453: 
1.48      pazsan    454: ;; get location of first character of previous forth word that's got 
                    455: ;; properties
                    456: (defun forth-previous-start (pos)
                    457:   (let* ((word (get-text-property pos 'forth-word))
                    458:         (prev (previous-single-property-change 
                    459:                (min (point-max) (1+ pos)) 'forth-word 
                    460:                (current-buffer) (point-min))))
                    461:     (if (or (= (point-min) prev) word) prev
                    462:       (if (get-text-property (1- prev) 'forth-word)
                    463:          (previous-single-property-change 
                    464:           prev 'forth-word (current-buffer) (point-min))
                    465:        (point-min)))))
                    466: 
                    467: ;; Get location of the last character of the current/next forth word that's
                    468: ;; got properties, text that's parsed by the word is considered as parts of 
                    469: ;; the word.
                    470: (defun forth-next-end (pos)
                    471:   (let* ((word (get-text-property pos 'forth-word))
                    472:         (next (next-single-property-change pos 'forth-word 
                    473:                                            (current-buffer) (point-max))))
                    474:     (if word next
                    475:       (if (get-text-property next 'forth-word)
                    476:          (next-single-property-change 
                    477:           next 'forth-word (current-buffer) (point-max))
                    478:        (point-max)))))
                    479: 
                    480: (defun forth-next-whitespace (pos)
                    481:   (save-excursion
                    482:     (goto-char pos)
                    483:     (skip-syntax-forward "-" (point-max))
                    484:     (point)))
                    485: (defun forth-previous-word (pos)
                    486:   (save-excursion
                    487:     (goto-char pos)
                    488:     (re-search-backward "\\<" pos (point-min) 1)
                    489:     (point)))
                    490: 
                    491: ;; Delete all properties, used by Forth mode, from `from' to `to'.
                    492: (defun forth-delete-properties (from to)
                    493:   (remove-text-properties 
1.55      dvdkhlng  494:    from to '(face nil fontified nil 
                    495:                  forth-parsed nil forth-word nil forth-state nil)))
1.48      pazsan    496: 
                    497: ;; Get the index of the branch of the most recently evaluated regular 
                    498: ;; expression that matched. (used for identifying branches "a\\|b\\|c...")
                    499: (defun forth-get-regexp-branch ()
                    500:   (let ((count 2))
                    501:     (while (not (match-beginning count))
                    502:       (setq count (1+ count)))
                    503:     count))
                    504: 
                    505: ;; seek to next forth-word and return its "word-description"
                    506: (defun forth-next-known-forth-word (to)
                    507:   (if (<= (point) to)
                    508:       (progn
                    509:        (let* ((regexp (car forth-compiled-words))
                    510:               (pos (re-search-forward regexp to t)))
                    511:          (if pos (let ((branch (forth-get-regexp-branch))
                    512:                        (descr (cdr forth-compiled-words)))
                    513:                    (goto-char (match-beginning 0))
                    514:                    (cdr (assoc branch descr)))
                    515:            'nil)))
                    516:     nil))
                    517: 
                    518: ;; Set properties of forth word at `point', eventually parsing subsequent 
                    519: ;; words, and parsing all whitespaces. Set point to delimiter after word.
                    520: ;; The word, including it's parsed text gets the `forth-word' property, whose 
                    521: ;; value is unique, and may be used for getting the word's start/end 
                    522: ;; positions.
                    523: (defun forth-set-word-properties (state data)
                    524:   (let* ((start (point))
                    525:         (end (progn (re-search-forward "[ \t]\\|$" (point-max) 1)
                    526:                     (point)))
                    527:         (type (car data))
                    528:         (hilight (nth 1 data))
                    529:         (bad-word (and (not state) (eq type 'compile-only)))
                    530:         (hlface (if bad-word font-lock-warning-face
                    531:                   (if (<= (cdr hilight) forth-hilight-level)
                    532:                       (car hilight) nil))))
                    533:     (when hlface (put-text-property start end 'face hlface))
                    534:     ;; if word parses in current state, process parsed range of text
                    535:     (when (or (not state) (eq type 'compile-only) (eq type 'immediate))
                    536:       (let ((parse-data (nthcdr 2 data)))
                    537:        (while parse-data
                    538:          (let ((delim (nth 0 parse-data))
                    539:                (skip-leading (nth 1 parse-data))
                    540:                (parse-type (nth 2 parse-data))
                    541:                (parsed-hilight (nth 3 parse-data))
                    542:                (parse-start (point))
                    543:                (parse-end))
                    544:            (when skip-leading
                    545:              (while (and (looking-at delim) (> (match-end 0) (point))
                    546:                          (not (looking-at "\n")))
                    547:                (forward-char)))
                    548:            (re-search-forward delim (point-max) 1)
                    549:            (setq parse-end (point))
                    550:            (forth-delete-properties end parse-end)
                    551:            (when (<= (cdr parsed-hilight) forth-hilight-level)
                    552:              (put-text-property 
                    553:               parse-start parse-end 'face (car parsed-hilight)))
                    554:            (put-text-property 
                    555:             parse-start parse-end 'forth-parsed parse-type)
                    556:            (setq end parse-end)
                    557:            (setq parse-data (nthcdr 4 parse-data))))))
                    558:     (put-text-property start end 'forth-word start)))
                    559: 
                    560: ;; Search for known Forth words in the range `from' to `to', using 
                    561: ;; `forth-next-known-forth-word' and set their properties via 
                    562: ;; `forth-set-word-properties'.
1.51      dvdkhlng  563: (defun forth-update-properties (from to &optional loudly)
1.48      pazsan    564:   (save-excursion
1.51      dvdkhlng  565:     (let ((msg-count 0) (state) (word-descr) (last-location))
1.48      pazsan    566:       (goto-char (forth-previous-word (forth-previous-start 
                    567:                                       (max (point-min) (1- from)))))
                    568:       (setq to (forth-next-end (min (point-max) (1+ to))))
                    569:       ;; `to' must be on a space delimiter, if a parsing word was changed
                    570:       (setq to (forth-next-whitespace to))
                    571:       (setq state (get-text-property (point) 'forth-state))
                    572:       (setq last-location (point))
                    573:       (forth-delete-properties (point) to)
1.55      dvdkhlng  574:       (put-text-property (point) to 'fontified t)
1.48      pazsan    575:       ;; hilight loop...
                    576:       (while (setq word-descr (forth-next-known-forth-word to))
1.51      dvdkhlng  577:        (when loudly
                    578:          (when (equal 0 (% msg-count 100))
                    579:            (message "Parsing Forth code...%s"
                    580:                     (make-string (/ msg-count 100) ?.)))
                    581:          (setq msg-count (1+ msg-count)))
1.48      pazsan    582:        (forth-set-word-properties state word-descr)
                    583:        (when state (put-text-property last-location (point) 'forth-state t))
                    584:        (let ((type (car word-descr)))
                    585:          (if (eq type 'definition-starter) (setq state t))
                    586:          (if (eq type 'definition-ender) (setq state nil))
                    587:          (setq last-location (point))))
                    588:       ;; update state property up to `to'
                    589:       (if (and state (< (point) to))
                    590:          (put-text-property last-location to 'forth-state t))
                    591:       ;; extend search if following state properties differ from current state
                    592:       (if (< to (point-max))
                    593:          (if (not (equal state (get-text-property (1+ to) 'forth-state)))
                    594:              (let ((extend-to (next-single-property-change 
                    595:                                to 'forth-state (current-buffer) (point-max))))
                    596:                (forth-update-properties to extend-to))
                    597:            ))
                    598:       )))
                    599: 
                    600: ;; save-buffer-state borrowed from `font-lock.el'
                    601: (eval-when-compile 
                    602:   (defmacro forth-save-buffer-state (varlist &rest body)
                    603:     "Bind variables according to VARLIST and eval BODY restoring buffer state."
                    604:     (` (let* ((,@ (append varlist
                    605:                   '((modified (buffer-modified-p)) (buffer-undo-list t)
                    606:                     (inhibit-read-only t) (inhibit-point-motion-hooks t)
                    607:                     before-change-functions after-change-functions
                    608:                     deactivate-mark buffer-file-name buffer-file-truename))))
                    609:         (,@ body)
                    610:         (when (and (not modified) (buffer-modified-p))
                    611:           (set-buffer-modified-p nil))))))
                    612: 
                    613: ;; Function that is added to the `change-functions' hook. Calls 
                    614: ;; `forth-update-properties' and keeps care of disabling undo information
                    615: ;; and stuff like that.
1.51      dvdkhlng  616: (defun forth-change-function (from to len &optional loudly)
1.48      pazsan    617:   (save-match-data
1.55      dvdkhlng  618:     (forth-save-buffer-state 
                    619:      () 
                    620:      (unless forth-disable-parser (forth-update-properties from to loudly))
                    621:      (forth-update-warn-long-lines))))
                    622: 
                    623: (defun forth-fontification-function (from)
                    624:   "Function to be called from `fontification-functions' of Emacs 21."
                    625:   (save-match-data
                    626:     (forth-save-buffer-state
                    627:      ((to (min (point-max) (+ from 100))))
                    628:      (unless (or forth-disable-parser (not forth-jit-parser)
                    629:                 (get-text-property from 'fontified))
                    630:        (forth-update-properties from to)))))
1.48      pazsan    631: 
                    632: (eval-when-compile
                    633:   (byte-compile 'forth-set-word-properties)
                    634:   (byte-compile 'forth-next-known-forth-word)
                    635:   (byte-compile 'forth-update-properties)
                    636:   (byte-compile 'forth-delete-properties)
                    637:   (byte-compile 'forth-get-regexp-branch)) 
                    638: 
1.51      dvdkhlng  639: ;;; imenu support
                    640: ;;;
1.52      dvdkhlng  641: (defvar forth-defining-words 
                    642:   '("VARIABLE" "CONSTANT" "2VARIABLE" "2CONSTANT" "FVARIABLE" "FCONSTANT"
                    643:    "USER" "VALUE" "field" "end-struct" "VOCABULARY" "CREATE" ":" "CODE"
                    644:    "DEFER" "ALIAS")
1.53      dvdkhlng  645:   "List of words, that define the following word.
1.55      dvdkhlng  646: Used for imenu index generation.")
1.52      dvdkhlng  647: 
1.57    ! dvdkhlng  648: (defvar forth-defining-words-regexp nil 
        !           649:   "Regexp that's generated for matching `forth-defining-words'")
1.52      dvdkhlng  650:  
1.51      dvdkhlng  651: (defun forth-next-definition-starter ()
                    652:   (progn
1.52      dvdkhlng  653:     (let* ((pos (re-search-forward forth-defining-words-regexp (point-max) t)))
1.51      dvdkhlng  654:       (if pos
                    655:          (if (or (text-property-not-all (match-beginning 0) (match-end 0) 
1.52      dvdkhlng  656:                                         'forth-parsed nil)
                    657:                  (text-property-not-all (match-beginning 0) (match-end 0)
                    658:                                         'forth-state nil)) 
1.51      dvdkhlng  659:              (forth-next-definition-starter)
                    660:            t)
                    661:        nil))))
                    662: 
                    663: (defun forth-create-index ()
1.52      dvdkhlng  664:   (let* ((forth-defining-words-regexp 
                    665:          (concat "\\<\\(" (regexp-opt forth-defining-words) "\\)\\>"))
1.51      dvdkhlng  666:         (index nil))
                    667:     (goto-char (point-min))
                    668:     (while (forth-next-definition-starter)
                    669:       (if (looking-at "[ \t]*\\([^ \t\n]+\\)")
                    670:          (setq index (cons (cons (match-string 1) (point)) index))))
                    671:     index))
                    672: 
1.57    ! dvdkhlng  673: ;; top-level require is executed at byte-compile and load time
        !           674: (require 'speedbar nil t)
        !           675: 
        !           676: ;; this code is executed at load-time only
        !           677: (when (require 'speedbar nil t)
        !           678:   (speedbar-add-supported-extension ".fs")
        !           679:   (speedbar-add-supported-extension ".fb"))
1.51      dvdkhlng  680: 
1.48      pazsan    681: ;; (require 'profile)
                    682: ;; (setq profile-functions-list '(forth-set-word-properties forth-next-known-forth-word forth-update-properties forth-delete-properties forth-get-regexp-branch))
                    683: 
                    684: ;;; Indentation
                    685: ;;;
                    686: 
                    687: ;; Return, whether `pos' is the first forth word on its line
                    688: (defun forth-first-word-on-line-p (pos)
                    689:   (save-excursion
                    690:     (beginning-of-line)
                    691:     (skip-chars-forward " \t")
                    692:     (= pos (point))))
                    693: 
                    694: ;; Return indentation data (SELF-INDENT . NEXT-INDENT) of next known 
                    695: ;; indentation word, or nil if there is no word up to `to'. 
                    696: ;; Position `point' at location just after found word, or at `to'. Parsed 
                    697: ;; ranges of text will not be taken into consideration!
                    698: (defun forth-next-known-indent-word (to)
                    699:   (if (<= (point) to)
                    700:       (progn
                    701:        (let* ((regexp (car forth-compiled-indent-words))
                    702:               (pos (re-search-forward regexp to t)))
                    703:          (if pos
1.54      dvdkhlng  704:              (let* ((start (match-beginning 0))
                    705:                     (end (match-end 0))
                    706:                     (branch (forth-get-regexp-branch))
                    707:                     (descr (cdr forth-compiled-indent-words))
                    708:                     (indent (cdr (assoc branch descr)))
                    709:                     (type (nth 2 indent)))
                    710:                ;; skip words that are parsed (strings/comments) and 
                    711:                ;; non-immediate words inside definitions
                    712:                (if (or (text-property-not-all start end 'forth-parsed nil)
                    713:                        (and (eq type 'non-immediate) 
                    714:                             (text-property-not-all start end 
                    715:                                                    'forth-state nil)))
                    716:                    (forth-next-known-indent-word to)
1.48      pazsan    717:                  (if (forth-first-word-on-line-p (match-beginning 0))
                    718:                      (nth 0 indent) (nth 1 indent))))
                    719:            nil)))
                    720:     nil))
                    721:   
                    722: ;; Translate indentation value `indent' to indentation column. Multiples of
                    723: ;; 2 correspond to multiples of `forth-indent-level'. Odd numbers get an
                    724: ;; additional `forth-minor-indent-level' added (or substracted).
                    725: (defun forth-convert-to-column (indent)
                    726:   (let* ((sign (if (< indent 0) -1 1))
                    727:         (value (abs indent))
                    728:         (major (* (/ value 2) forth-indent-level))
                    729:         (minor (* (% value 2) forth-minor-indent-level)))
                    730:     (* sign (+ major minor))))
                    731: 
                    732: ;; Return the column increment, that the current line of forth code does to
                    733: ;; the current or following lines. `which' specifies which indentation values
                    734: ;; to use. 0 means the indentation of following lines relative to current 
                    735: ;; line, 1 means the indentation of the current line relative to the previous 
                    736: ;; line. Return `nil', if there are no indentation words on the current line.
                    737: (defun forth-get-column-incr (which)
                    738:   (save-excursion
                    739:     (let ((regexp (car forth-compiled-indent-words))
                    740:          (word-indent)
                    741:          (self-indent nil)
                    742:          (next-indent nil)
                    743:          (to (save-excursion (end-of-line) (point))))
                    744:       (beginning-of-line)
                    745:       (while (setq word-indent (forth-next-known-indent-word to))
                    746:        (let* ((self-incr (car word-indent))
                    747:               (next-incr (cdr word-indent))
                    748:               (self-column-incr (forth-convert-to-column self-incr))
                    749:               (next-column-incr (forth-convert-to-column next-incr)))
                    750:          (setq next-indent (if next-indent next-indent 0))
                    751:          (setq self-indent (if self-indent self-indent 0))
                    752:          (if (or (and (> next-indent 0) (< self-column-incr 0))
                    753:                  (and (< next-indent 0) (> self-column-incr 0)))
                    754:              (setq next-indent (+ next-indent self-column-incr))
                    755:            (setq self-indent (+ self-indent self-column-incr)))
                    756:          (setq next-indent (+ next-indent next-column-incr))))
                    757:       (nth which (list self-indent next-indent)))))
                    758: 
                    759: ;; Find previous line that contains indentation words, return the column,
                    760: ;; to which following text should be indented to.
                    761: (defun forth-get-anchor-column ()
                    762:   (save-excursion
                    763:     (if (/= 0 (forward-line -1)) 0
1.54      dvdkhlng  764:       (let ((indent))
1.48      pazsan    765:        (while (not (or (setq indent (forth-get-column-incr 1))
                    766:                        (<= (point) (point-min))))
                    767:          (forward-line -1))
                    768:        (+ (current-indentation) (if indent indent 0))))))
                    769: 
                    770: (defun forth-indent-line (&optional flag)
                    771:   "Correct indentation of the current Forth line."
                    772:   (let* ((anchor (forth-get-anchor-column))
                    773:         (column-incr (forth-get-column-incr 0)))
                    774:     (forth-indent-to (if column-incr (+ anchor column-incr) anchor))))
                    775: 
1.49      dvdkhlng  776: (defun forth-current-column ()
                    777:   (- (point) (save-excursion (beginning-of-line) (point))))
                    778: (defun forth-current-indentation ()
                    779:   (- (save-excursion (beginning-of-line) (forward-to-indentation 0) (point))
                    780:      (save-excursion (beginning-of-line) (point))))
                    781: 
1.48      pazsan    782: (defun forth-indent-to (x)
                    783:   (let ((p nil))
1.49      dvdkhlng  784:     (setq p (- (forth-current-column) (forth-current-indentation)))
1.48      pazsan    785:     (forth-delete-indentation)
                    786:     (beginning-of-line)
                    787:     (indent-to x)
                    788:     (if (> p 0) (forward-char p))))
                    789: 
                    790: (defun forth-delete-indentation ()
                    791:   (save-excursion
                    792:     (delete-region 
                    793:      (progn (beginning-of-line) (point)) 
                    794:      (progn (back-to-indentation) (point)))))
                    795: 
                    796: (defun forth-indent-command ()
                    797:   (interactive)
                    798:   (forth-indent-line t))
                    799: 
                    800: ;; remove trailing whitespaces in current line
                    801: (defun forth-remove-trailing ()
                    802:   (save-excursion
                    803:     (end-of-line)
                    804:     (delete-region (point) (progn (skip-chars-backward " \t") (point)))))
                    805: 
                    806: ;; insert newline, removing any trailing whitespaces in the current line
                    807: (defun forth-newline-remove-trailing ()
                    808:   (save-excursion
1.49      dvdkhlng  809:     (delete-region (point) (progn (skip-chars-backward " \t") (point))))
                    810:   (newline))
                    811: ;  (let ((was-point (point-marker)))
                    812: ;    (unwind-protect 
                    813: ;      (progn (forward-line -1) (forth-remove-trailing))
                    814: ;      (goto-char (was-point)))))
1.48      pazsan    815: 
                    816: ;; workaround for bug in `reindent-then-newline-and-indent'
                    817: (defun forth-reindent-then-newline-and-indent ()
                    818:   (interactive "*")
                    819:   (indent-according-to-mode)
                    820:   (forth-newline-remove-trailing)
                    821:   (indent-according-to-mode))
                    822: 
                    823: ;;; end hilighting/indentation
                    824: 
                    825: ;;; Block file encoding/decoding  (dk)
                    826: ;;;
                    827: 
                    828: (defconst forth-c/l 64 "Number of characters per block line")
                    829: (defconst forth-l/b 16 "Number of lines per block")
                    830: 
                    831: ;; Check whether the unconverted block file line, point is in, does not
                    832: ;; contain `\n' and `\t' characters.
                    833: (defun forth-check-block-line (line)
                    834:   (let ((end (save-excursion (beginning-of-line) (forward-char forth-c/l)
                    835:                             (point))))
                    836:     (save-excursion 
                    837:       (beginning-of-line)
                    838:       (when (search-forward "\n" end t)
                    839:        (message "Warning: line %i contains newline character #10" line)
                    840:        (ding t))
                    841:       (beginning-of-line)
                    842:       (when (search-forward "\t" end t)
                    843:        (message "Warning: line %i contains tab character #8" line)
                    844:        (ding t)))))
                    845: 
                    846: (defun forth-convert-from-block (from to)
                    847:   "Convert block file format to stream source in current buffer."
                    848:   (let ((line (count-lines (point-min) from)))
                    849:     (save-excursion
                    850:       (goto-char from)
                    851:       (set-mark to)
                    852:       (while (< (+ (point) forth-c/l) (mark t))
                    853:        (setq line (1+ line))
                    854:        (forth-check-block-line line)
                    855:        (forward-char forth-c/l)
                    856:        (forth-newline-remove-trailing))
                    857:       (when (= (+ (point) forth-c/l) (mark t))
                    858:        (forth-remove-trailing))
                    859:       (mark t))))
                    860: 
                    861: ;; Pad a line of a block file up to `forth-c/l' characters, positioning `point'
                    862: ;; at the end of line.
                    863: (defun forth-pad-block-line ()
                    864:   (save-excursion
                    865:     (end-of-line)
                    866:     (if (<= (current-column) forth-c/l)
                    867:        (move-to-column forth-c/l t)
                    868:       (message "Line %i longer than %i characters, truncated"
                    869:               (count-lines (point-min) (point)) forth-c/l)
                    870:       (ding t)
                    871:       (move-to-column forth-c/l t)
                    872:       (delete-region (point) (progn (end-of-line) (point))))))
                    873: 
                    874: ;; Replace tab characters in current line by spaces.
                    875: (defun forth-convert-tabs-in-line ()
                    876:   (save-excursion
                    877:     (beginning-of-line)
                    878:     (while (search-forward "\t" (save-excursion (end-of-line) (point)) t)
                    879:       (backward-char)
                    880:       (delete-region (point) (1+ (point)))
                    881:       (insert-char ?\  (- tab-width (% (current-column) tab-width))))))
                    882: 
                    883: ;; Delete newline at end of current line, concatenating it with the following
                    884: ;; line. Place `point' at end of newly formed line.
                    885: (defun forth-delete-newline ()
                    886:   (end-of-line)
                    887:   (delete-region (point) (progn (beginning-of-line 2) (point))))
                    888: 
                    889: (defun forth-convert-to-block (from to &optional original-buffer) 
                    890:   "Convert range of text to block file format in current buffer."
                    891:   (let* ((lines 0)) ; I have to count lines myself, since `count-lines' has
                    892:                    ; problems with trailing newlines...
                    893:     (save-excursion
                    894:       (goto-char from)
                    895:       (set-mark to)
                    896:       ;; pad lines to full length (`forth-c/l' characters per line)
                    897:       (while (< (save-excursion (end-of-line) (point)) (mark t))
                    898:        (setq lines (1+ lines))
                    899:        (forth-pad-block-line)
                    900:        (forth-convert-tabs-in-line)
                    901:        (forward-line))
                    902:       ;; also make sure the last line is padded, if `to' is at its end
                    903:       (end-of-line)
                    904:       (when (= (point) (mark t))
                    905:        (setq lines (1+ lines))
                    906:        (forth-pad-block-line)
                    907:        (forth-convert-tabs-in-line))
                    908:       ;; remove newlines between lines
                    909:       (goto-char from)
                    910:       (while (< (save-excursion (end-of-line) (point)) (mark t))
                    911:        (forth-delete-newline))
                    912:       ;; append empty lines, until last block is complete
                    913:       (goto-char (mark t))
                    914:       (let* ((required (* (/ (+ lines (1- forth-l/b)) forth-l/b) forth-l/b))
                    915:             (pad-lines (- required lines)))
                    916:        (while (> pad-lines 0)
                    917:          (insert-char ?\  forth-c/l)
                    918:          (setq pad-lines (1- pad-lines))))
                    919:       (point))))
                    920: 
                    921: (defun forth-detect-block-file-p ()
                    922:   "Return non-nil if the current buffer is in block file format. Detection is
                    923: done by checking whether the first line has 1024 characters or more."
                    924:   (save-restriction 
                    925:     (widen)
                    926:     (save-excursion
1.54      dvdkhlng  927:        (goto-char (point-min))
1.48      pazsan    928:        (end-of-line)
                    929:        (>= (current-column) 1024))))
                    930: 
                    931: ;; add block file conversion routines to `format-alist'
                    932: (defconst forth-block-format-description
                    933:   '(forth-blocks "Forth block source file" nil 
                    934:                 forth-convert-from-block forth-convert-to-block 
                    935:                 t normal-mode))
                    936: (unless (memq forth-block-format-description format-alist)
                    937:   (setq format-alist (cons forth-block-format-description format-alist)))
                    938: 
                    939: ;;; End block file encoding/decoding
                    940: 
                    941: ;;; Block file editing
                    942: ;;;
                    943: (defvar forth-overlay-arrow-string ">>")
                    944: (defvar forth-block-base 1 "Number of first block in block file")
                    945: (defvar forth-show-screen nil
                    946:   "Non-nil means to show screen starts and numbers (for block files)")
                    947: (defvar forth-warn-long-lines nil
                    948:   "Non-nil means to warn about lines that are longer than 64 characters")
                    949: 
                    950: (defvar forth-screen-marker nil)
1.57    ! dvdkhlng  951: (defvar forth-screen-number-string nil)
1.48      pazsan    952: 
                    953: (defun forth-update-show-screen ()
                    954:   "If `forth-show-screen' is non-nil, put overlay arrow to start of screen, 
                    955: `point' is in. If arrow now points to different screen than before, display 
                    956: screen number."
                    957:   (if (not forth-show-screen)
                    958:       (setq overlay-arrow-string nil)
                    959:     (save-excursion
                    960:       (let* ((line (count-lines (point-min) (min (point-max) (1+ (point)))))
                    961:             (first-line (1+ (* (/ (1- line) forth-l/b) forth-l/b)))
                    962:             (scr (+ forth-block-base (/ first-line forth-l/b))))
                    963:        (setq overlay-arrow-string forth-overlay-arrow-string)
                    964:        (goto-line first-line)
                    965:        (setq overlay-arrow-position forth-screen-marker)
1.50      dvdkhlng  966:        (set-marker forth-screen-marker 
                    967:                    (save-excursion (goto-line first-line) (point)))
                    968:        (setq forth-screen-number-string (format "%d" scr))))))
1.48      pazsan    969: 
                    970: (add-hook 'forth-motion-hooks 'forth-update-show-screen)
                    971: 
                    972: (defun forth-update-warn-long-lines ()
                    973:   "If `forth-warn-long-lines' is non-nil, display a warning whenever a line
                    974: exceeds 64 characters."
                    975:   (when forth-warn-long-lines
                    976:     (when (> (save-excursion (end-of-line) (current-column)) forth-c/l)
                    977:       (message "Warning: current line exceeds %i characters"
                    978:               forth-c/l))))
                    979: 
                    980: (add-hook 'forth-motion-hooks 'forth-update-warn-long-lines)
1.55      dvdkhlng  981: 
                    982: (defvar forth-was-point nil)
                    983: (defun forth-check-motion ()
                    984:   "Run `forth-motion-hooks', if `point' changed since last call."
                    985:   (when (or (eq forth-was-point nil) (/= forth-was-point (point)))
                    986:     (setq forth-was-point (point))
                    987:     (run-hooks 'forth-motion-hooks)))
1.48      pazsan    988:     
                    989: ;;; End block file editing
1.1       anton     990: 
1.6       anton     991: 
1.1       anton     992: (defvar forth-mode-abbrev-table nil
                    993:   "Abbrev table in use in Forth-mode buffers.")
                    994: 
                    995: (define-abbrev-table 'forth-mode-abbrev-table ())
                    996: 
                    997: (defvar forth-mode-map nil
                    998:   "Keymap used in Forth mode.")
                    999: 
                   1000: (if (not forth-mode-map)
                   1001:     (setq forth-mode-map (make-sparse-keymap)))
                   1002: 
1.9       anton    1003: ;(define-key forth-mode-map "\M-\C-x" 'compile)
1.7       anton    1004: (define-key forth-mode-map "\C-x\\" 'comment-region)
                   1005: (define-key forth-mode-map "\C-x~" 'forth-remove-tracers)
1.1       anton    1006: (define-key forth-mode-map "\e\C-m" 'forth-send-paragraph)
                   1007: (define-key forth-mode-map "\eo" 'forth-send-buffer)
                   1008: (define-key forth-mode-map "\C-x\C-m" 'forth-split)
                   1009: (define-key forth-mode-map "\e " 'forth-reload)
                   1010: (define-key forth-mode-map "\t" 'forth-indent-command)
1.48      pazsan   1011: (define-key forth-mode-map "\C-m" 'forth-reindent-then-newline-and-indent)
1.7       anton    1012: (define-key forth-mode-map "\M-q" 'forth-fill-paragraph)
1.13      pazsan   1013: (define-key forth-mode-map "\e." 'forth-find-tag)
1.1       anton    1014: 
1.35      anton    1015: ;setup for C-h C-i to work
1.57    ! dvdkhlng 1016: (require 'info-look nil t)
        !          1017: (when (require 'info-look nil t)
        !          1018:   (info-lookup-add-help
        !          1019:    :topic 'symbol
        !          1020:    :mode 'forth-mode
        !          1021:    :regexp "[^         
1.35      anton    1022: ]+"
1.57    ! dvdkhlng 1023:    :ignore-case t
        !          1024:    :doc-spec '(("(gforth)Name Index" nil "`" "'  "))))
1.35      anton    1025: 
1.57    ! dvdkhlng 1026: (require 'etags)
1.13      pazsan   1027: 
                   1028: (defun forth-find-tag (tagname &optional next-p regexp-p)
                   1029:   (interactive (find-tag-interactive "Find tag: "))
1.53      dvdkhlng 1030:   (unless (or regexp-p next-p)
                   1031:     (setq tagname (concat "\\(^\\|\\s-\\)\\(" (regexp-quote tagname) 
                   1032:                            "\\)\\(\\s-\\|$\\)")))
1.13      pazsan   1033:   (switch-to-buffer
1.53      dvdkhlng 1034:    (find-tag-noselect tagname next-p t)))
1.13      pazsan   1035: 
1.1       anton    1036: (defvar forth-mode-syntax-table nil
                   1037:   "Syntax table in use in Forth-mode buffers.")
                   1038: 
1.48      pazsan   1039: ;; Important: hilighting/indentation now depends on a correct syntax table.
                   1040: ;; All characters, except whitespace *must* belong to the "word constituent"
                   1041: ;; syntax class. If different behaviour is required, use of Categories might
                   1042: ;; help.
                   1043: (if (not forth-mode-syntax-table)
1.1       anton    1044:     (progn
                   1045:       (setq forth-mode-syntax-table (make-syntax-table))
1.6       anton    1046:       (let ((char 0))
                   1047:        (while (< char ?!)
                   1048:          (modify-syntax-entry char " " forth-mode-syntax-table)
                   1049:          (setq char (1+ char)))
                   1050:        (while (< char 256)
                   1051:          (modify-syntax-entry char "w" forth-mode-syntax-table)
                   1052:          (setq char (1+ char))))
                   1053:       ))
1.1       anton    1054: 
                   1055: 
                   1056: (defun forth-mode-variables ()
                   1057:   (set-syntax-table forth-mode-syntax-table)
                   1058:   (setq local-abbrev-table forth-mode-abbrev-table)
                   1059:   (make-local-variable 'paragraph-start)
                   1060:   (setq paragraph-start (concat "^$\\|" page-delimiter))
                   1061:   (make-local-variable 'paragraph-separate)
                   1062:   (setq paragraph-separate paragraph-start)
                   1063:   (make-local-variable 'indent-line-function)
                   1064:   (setq indent-line-function 'forth-indent-line)
1.6       anton    1065: ;  (make-local-variable 'require-final-newline)
                   1066: ;  (setq require-final-newline t)
1.1       anton    1067:   (make-local-variable 'comment-start)
1.3       anton    1068:   (setq comment-start "\\ ")
                   1069:   ;(make-local-variable 'comment-end)
                   1070:   ;(setq comment-end " )")
1.1       anton    1071:   (make-local-variable 'comment-column)
                   1072:   (setq comment-column 40)
                   1073:   (make-local-variable 'comment-start-skip)
1.3       anton    1074:   (setq comment-start-skip "\\ ")
1.57    ! dvdkhlng 1075:   (make-local-variable 'comment-indent-function)
        !          1076:   (setq comment-indent-function 'forth-comment-indent)
1.1       anton    1077:   (make-local-variable 'parse-sexp-ignore-comments)
1.47      pazsan   1078:   (setq parse-sexp-ignore-comments t)
1.48      pazsan   1079:   (setq case-fold-search t)
1.55      dvdkhlng 1080:   (make-local-variable 'forth-was-point)
                   1081:   (setq forth-was-point -1)
1.48      pazsan   1082:   (make-local-variable 'forth-words)
                   1083:   (make-local-variable 'forth-compiled-words)
                   1084:   (make-local-variable 'forth-compiled-indent-words)
                   1085:   (make-local-variable 'forth-hilight-level)
                   1086:   (make-local-variable 'after-change-functions)
1.55      dvdkhlng 1087:   (make-local-variable 'post-command-hook)
1.48      pazsan   1088:   (make-local-variable 'forth-show-screen)
                   1089:   (make-local-variable 'forth-screen-marker)
                   1090:   (make-local-variable 'forth-warn-long-lines)
1.50      dvdkhlng 1091:   (make-local-variable 'forth-screen-number-string)
1.51      dvdkhlng 1092:   (make-local-variable 'forth-use-oof)
                   1093:   (make-local-variable 'forth-use-objects) 
1.48      pazsan   1094:   (setq forth-screen-marker (copy-marker 0))
1.51      dvdkhlng 1095:   (add-hook 'after-change-functions 'forth-change-function)
1.55      dvdkhlng 1096:   (add-hook 'post-command-hook 'forth-check-motion)
                   1097:   (if (>= emacs-major-version 21)
                   1098:       (add-hook 'fontification-functions 'forth-fontification-function))
1.51      dvdkhlng 1099:   (setq imenu-create-index-function 'forth-create-index))
1.47      pazsan   1100: 
1.2       anton    1101: ;;;###autoload
1.1       anton    1102: (defun forth-mode ()
                   1103:   "
                   1104: Major mode for editing Forth code. Tab indents for Forth code. Comments
1.9       anton    1105: are delimited with \\ and newline. Paragraphs are separated by blank lines
1.49      dvdkhlng 1106: only. Block files are autodetected, when read, and converted to normal 
                   1107: stream source format. See also `forth-block-mode'.
1.1       anton    1108: \\{forth-mode-map}
                   1109:  Forth-split
                   1110:     Positions the current buffer on top and a forth-interaction window
                   1111:     below. The window size is controlled by the forth-percent-height
                   1112:     variable (see below).
                   1113:  Forth-reload
                   1114:     Reloads the forth library and restarts the forth process.
                   1115:  Forth-send-buffer
                   1116:     Sends the current buffer, in text representation, as input to the
                   1117:     forth process.
                   1118:  Forth-send-paragraph
                   1119:     Sends the previous or the current paragraph to the forth-process.
                   1120:     Note that the cursor only need to be with in the paragraph to be sent.
1.48      pazsan   1121:  forth-documentation
1.1       anton    1122:     Search for documentation of forward adjacent to cursor. Note! To use
                   1123:     this mode you have to add a line, to your .emacs file, defining the
                   1124:     directories to search through for documentation files (se variable
                   1125:     forth-help-load-path below) e.g. (setq forth-help-load-path '(nil)).
                   1126: 
                   1127: Variables controlling interaction and startup
                   1128:  forth-percent-height
                   1129:     Tells split how high to make the edit portion, in percent of the
                   1130:     current screen height.
                   1131:  forth-program-name
                   1132:     Tells the library which program name to execute in the interation
                   1133:     window.
                   1134: 
1.48      pazsan   1135: Variables controlling syntax hilighting/recognition of parsed text:
                   1136:  `forth-words'
                   1137:     List of words that have a special parsing behaviour and/or should be
1.51      dvdkhlng 1138:     hilighted. Add custom words by setting forth-custom-words in your
                   1139:     .emacs, or by setting forth-local-words, in source-files' local 
                   1140:     variables lists.
                   1141:  forth-use-objects
1.55      dvdkhlng 1142:     Set this variable to non-nil in your .emacs, or in a local variables 
1.51      dvdkhlng 1143:     list, to hilight and recognize the words from the \"Objects\" package 
                   1144:     for object-oriented programming.
                   1145:  forth-use-oof
                   1146:     Same as above, just for the \"OOF\" package.
                   1147:  forth-custom-words
                   1148:     List of custom Forth words to prepend to `forth-words'. Should be set
                   1149:     in your .emacs.
1.49      dvdkhlng 1150:  forth-local-words
                   1151:     List of words to prepend to `forth-words', whenever a forth-mode
                   1152:     buffer is created. That variable should be set by Forth sources, using
                   1153:     a local variables list at the end of file, to get file-specific
                   1154:     hilighting.
                   1155:     0 [IF]
                   1156:        Local Variables: ... 
                   1157:        forth-local-words: ...
                   1158:        End:
                   1159:     [THEN]
1.48      pazsan   1160:  forth-hilight-level
                   1161:     Controls how much syntax hilighting is done. Should be in the range 
1.51      dvdkhlng 1162:     0..3
1.48      pazsan   1163: 
1.1       anton    1164: Variables controlling indentation style:
1.48      pazsan   1165:  `forth-indent-words'
                   1166:     List of words that influence indentation.
1.51      dvdkhlng 1167:  forth-local-indent-words
1.49      dvdkhlng 1168:     List of words to prepend to `forth-indent-words', similar to 
1.51      dvdkhlng 1169:     forth-local-words. Should be used for specifying file-specific 
1.49      dvdkhlng 1170:     indentation, using a local variables list.
1.51      dvdkhlng 1171:  forth-custom-indent-words
                   1172:     List of words to prepend to `forth-indent-words'. Should be set in your
                   1173:     .emacs.    
1.1       anton    1174:  forth-indent-level
                   1175:     Indentation increment/decrement of Forth statements.
1.48      pazsan   1176:  forth-minor-indent-level
                   1177:     Minor indentation increment/decrement of Forth statemens.
1.1       anton    1178: 
1.48      pazsan   1179: Variables controlling block-file editing:
1.51      dvdkhlng 1180:  forth-show-screen
1.48      pazsan   1181:     Non-nil means, that the start of the current screen is marked by an
1.50      dvdkhlng 1182:     overlay arrow, and screen numbers are displayed in the mode line.
                   1183:     This variable is by default nil for `forth-mode' and t for 
                   1184:     `forth-block-mode'.
1.51      dvdkhlng 1185:  forth-overlay-arrow-string
1.48      pazsan   1186:     String to display as the overlay arrow, when `forth-show-screen' is t.
                   1187:     Setting this variable to nil disables the overlay arrow.
1.51      dvdkhlng 1188:  forth-block-base
1.48      pazsan   1189:     Screen number of the first block in a block file. Defaults to 1.
1.51      dvdkhlng 1190:  forth-warn-long-lines
1.48      pazsan   1191:     Non-nil means that a warning message is displayed whenever you edit or
                   1192:     move over a line that is longer than 64 characters (the maximum line
                   1193:     length that can be stored into a block file). This variable defaults to
                   1194:     t for `forth-block-mode' and to nil for `forth-mode'.
1.1       anton    1195: 
                   1196: Variables controling documentation search
                   1197:  forth-help-load-path
                   1198:     List of directories to search through to find *.doc
                   1199:     (forth-help-file-suffix) files. Nil means current default directory.
                   1200:     The specified directories must contain at least one .doc file. If it
                   1201:     does not and you still want the load-path to scan that directory, create
                   1202:     an empty file dummy.doc.
                   1203:  forth-help-file-suffix
                   1204:     The file names to search for in each directory specified by
                   1205:     forth-help-load-path. Defaulted to '*.doc'. 
                   1206: "
                   1207:   (interactive)
                   1208:   (kill-all-local-variables)
                   1209:   (use-local-map forth-mode-map)
                   1210:   (setq mode-name "Forth")
                   1211:   (setq major-mode 'forth-mode)
1.48      pazsan   1212:   ;; convert buffer contents from block file format, if necessary
                   1213:   (when (forth-detect-block-file-p)
                   1214:     (widen)
                   1215:     (message "Converting from Forth block source...")
                   1216:     (forth-convert-from-block (point-min) (point-max))
                   1217:     (message "Converting from Forth block source...done"))
                   1218:   ;; if user switched from forth-block-mode to forth-mode, make sure the file
                   1219:   ;; is now stored as normal strem source
                   1220:   (when (equal buffer-file-format '(forth-blocks))
                   1221:     (setq buffer-file-format nil))
1.1       anton    1222:   (forth-mode-variables)
                   1223: ;  (if (not (forth-process-running-p))
                   1224: ;      (run-forth forth-program-name))
1.49      dvdkhlng 1225:   (run-hooks 'forth-mode-hook))
1.48      pazsan   1226: 
1.50      dvdkhlng 1227: ;;;###autoload
1.48      pazsan   1228: (define-derived-mode forth-block-mode forth-mode "Forth Block Source" 
                   1229:   "Major mode for editing Forth block source files, derived from 
                   1230: `forth-mode'. Differences to `forth-mode' are:
                   1231:  * files are converted to block format, when written (`buffer-file-format' 
                   1232:    is set to `(forth-blocks)')
                   1233:  * `forth-show-screen' and `forth-warn-long-lines' are t by default
                   1234:   
                   1235: Note that the length of lines in block files is limited to 64 characters.
                   1236: When writing longer lines to a block file, a warning is displayed in the
                   1237: echo area and the line is truncated. 
                   1238: 
                   1239: Another problem is imposed by block files that contain newline or tab 
                   1240: characters. When Emacs converts such files back to block file format, 
1.50      dvdkhlng 1241: it'll translate those characters to a number of spaces. However, when
1.48      pazsan   1242: you read such a file, a warning message is displayed in the echo area,
                   1243: including a line number that may help you to locate and fix the problem.
                   1244: 
                   1245: So have a look at the *Messages* buffer, whenever you hear (or see) Emacs' 
                   1246: bell during block file read/write operations."
                   1247:   (setq buffer-file-format '(forth-blocks))
                   1248:   (setq forth-show-screen t)
1.50      dvdkhlng 1249:   (setq forth-warn-long-lines t)
                   1250:   (setq forth-screen-number-string (format "%d" forth-block-base))
                   1251:   (setq mode-line-format (append (reverse (cdr (reverse mode-line-format)))
                   1252:                                 '("--S" forth-screen-number-string "-%-"))))
1.1       anton    1253: 
1.44      anton    1254: (add-hook 'forth-mode-hook
1.9       anton    1255:       '(lambda () 
                   1256:         (make-local-variable 'compile-command)
1.49      dvdkhlng 1257:         (setq compile-command "gforth ")
                   1258:         (forth-hack-local-variables)
1.51      dvdkhlng 1259:         (forth-customize-words)
1.49      dvdkhlng 1260:         (forth-compile-words)
1.55      dvdkhlng 1261:         (unless (and forth-jit-parser (>= emacs-major-version 21))
                   1262:           (forth-change-function (point-min) (point-max) nil t))))
1.6       anton    1263: 
1.7       anton    1264: (defun forth-fill-paragraph () 
                   1265:   "Fill comments (starting with '\'; do not fill code (block style
                   1266: programmers who tend to fill code won't use emacs anyway:-)."
1.9       anton    1267:   ; Currently only comments at the start of the line are filled.
                   1268:   ; Something like lisp-fill-paragraph may be better.  We cannot use
                   1269:   ; fill-paragraph, because it removes the \ from the first comment
                   1270:   ; line. Therefore we have to look for the first line of the comment
                   1271:   ; and use fill-region.
1.7       anton    1272:   (interactive)
                   1273:   (save-excursion
                   1274:     (beginning-of-line)
1.9       anton    1275:     (while (and
                   1276:             (= (forward-line -1) 0)
1.14      anton    1277:             (looking-at "[ \t]*\\\\g?[ \t]+")))
                   1278:     (if (not (looking-at "[ \t]*\\\\g?[ \t]+"))
1.9       anton    1279:        (forward-line 1))
                   1280:     (let ((from (point))
                   1281:          (to (save-excursion (forward-paragraph) (point))))
1.14      anton    1282:       (if (looking-at "[ \t]*\\\\g?[ \t]+")
1.9       anton    1283:          (progn (goto-char (match-end 0))
                   1284:                 (set-fill-prefix)
                   1285:                 (fill-region from to nil))))))
1.7       anton    1286: 
1.1       anton    1287: (defun forth-comment-indent ()
                   1288:   (save-excursion
                   1289:     (beginning-of-line)
                   1290:     (if (looking-at ":[ \t]*")
                   1291:        (progn
                   1292:          (end-of-line)
                   1293:          (skip-chars-backward " \t\n")
                   1294:          (1+ (current-column)))
                   1295:       comment-column)))
                   1296: 
                   1297: 
                   1298: ;; Forth commands
                   1299: 
1.7       anton    1300: (defun forth-remove-tracers ()
                   1301:   "Remove tracers of the form `~~ '. Queries the user for each occurrence."
                   1302:   (interactive)
1.16      anton    1303:   (query-replace-regexp "\\(~~ \\| ~~$\\)" "" nil))
1.7       anton    1304: 
1.5       anton    1305: (defvar forth-program-name "gforth"
1.1       anton    1306:   "*Program invoked by the `run-forth' command.")
                   1307: 
                   1308: (defvar forth-band-name nil
                   1309:   "*Band loaded by the `run-forth' command.")
                   1310: 
                   1311: (defvar forth-program-arguments nil
                   1312:   "*Arguments passed to the Forth program by the `run-forth' command.")
                   1313: 
                   1314: (defun run-forth (command-line)
                   1315:   "Run an inferior Forth process. Output goes to the buffer `*forth*'.
                   1316: With argument, asks for a command line. Split up screen and run forth 
                   1317: in the lower portion. The current-buffer when called will stay in the
                   1318: upper portion of the screen, and all other windows are deleted.
                   1319: Call run-forth again to make the *forth* buffer appear in the lower
                   1320: part of the screen."
                   1321:   (interactive
                   1322:    (list (let ((default
                   1323:                 (or forth-process-command-line
                   1324:                     (forth-default-command-line))))
                   1325:           (if current-prefix-arg
                   1326:               (read-string "Run Forth: " default)
                   1327:               default))))
                   1328:   (setq forth-process-command-line command-line)
                   1329:   (forth-start-process command-line)
                   1330:   (forth-split)
                   1331:   (forth-set-runlight forth-runlight:input))
                   1332: 
1.28      anton    1333: (defun run-forth-if-not ()
                   1334:   (if (not (forth-process-running-p))
                   1335:       (run-forth forth-program-name)))
                   1336: 
1.1       anton    1337: (defun reset-forth ()
                   1338:   "Reset the Forth process."
                   1339:   (interactive)
                   1340:   (let ((process (get-process forth-program-name)))
                   1341:     (cond ((or (not process)
                   1342:               (not (eq (process-status process) 'run))
                   1343:               (yes-or-no-p
                   1344: "The Forth process is running, are you SURE you want to reset it? "))
                   1345:           (message "Resetting Forth process...")
                   1346:           (forth-reload)
                   1347:           (message "Resetting Forth process...done")))))
                   1348: 
                   1349: (defun forth-default-command-line ()
1.13      pazsan   1350:   (concat forth-program-name
1.1       anton    1351:          (if forth-program-arguments
                   1352:              (concat " " forth-program-arguments)
                   1353:              "")))
                   1354: 
                   1355: ;;;; Internal Variables
                   1356: 
                   1357: (defvar forth-process-command-line nil
                   1358:   "Command used to start the most recent Forth process.")
                   1359: 
                   1360: (defvar forth-previous-send ""
                   1361:   "Most recent expression transmitted to the Forth process.")
                   1362: 
                   1363: (defvar forth-process-filter-queue '()
                   1364:   "Queue used to synchronize filter actions properly.")
                   1365: 
                   1366: (defvar forth-prompt "ok"
                   1367:   "The current forth prompt string.")
                   1368: 
                   1369: (defvar forth-start-hook nil
                   1370:   "If non-nil, a procedure to call when the Forth process is started.
                   1371: When called, the current buffer will be the Forth process-buffer.")
                   1372: 
                   1373: (defvar forth-signal-death-message nil
                   1374:   "If non-nil, causes a message to be generated when the Forth process dies.")
                   1375: 
1.9       anton    1376: (defvar forth-percent-height 50
1.1       anton    1377:   "Tells run-forth how high the upper window should be in percent.")
                   1378: 
                   1379: (defconst forth-runlight:input ?I
                   1380:   "The character displayed when the Forth process is waiting for input.")
                   1381: 
                   1382: (defvar forth-mode-string ""
                   1383:   "String displayed in the mode line when the Forth process is running.")
                   1384: 
                   1385: ;;;; Evaluation Commands
                   1386: 
                   1387: (defun forth-send-string (&rest strings)
                   1388:   "Send the string arguments to the Forth process.
                   1389: The strings are concatenated and terminated by a newline."
                   1390:   (cond ((forth-process-running-p)
                   1391:         (forth-send-string-1 strings))
                   1392:        ((yes-or-no-p "The Forth process has died.  Reset it? ")
                   1393:         (reset-forth)
                   1394:         (goto-char (point-max))
                   1395:         (forth-send-string-1 strings))))
                   1396: 
                   1397: (defun forth-send-string-1 (strings)
                   1398:   (let ((string (apply 'concat strings)))
                   1399:     (forth-send-string-2 string)))
                   1400: 
                   1401: (defun forth-send-string-2 (string)
                   1402:   (let ((process (get-process forth-program-name)))
                   1403:     (if (not (eq (current-buffer) (get-buffer forth-program-name)))
                   1404:        (progn
                   1405:         (forth-process-filter-output string)
                   1406:         (forth-process-filter:finish)))
                   1407:     (send-string process (concat string "\n"))
                   1408:     (if (eq (current-buffer) (process-buffer process))
                   1409:        (set-marker (process-mark process) (point)))))
                   1410: 
                   1411: 
                   1412: (defun forth-send-region (start end)
                   1413:   "Send the current region to the Forth process.
                   1414: The region is sent terminated by a newline."
                   1415:   (interactive "r")
                   1416:   (let ((process (get-process forth-program-name)))
                   1417:     (if (and process (eq (current-buffer) (process-buffer process)))
                   1418:        (progn (goto-char end)
                   1419:               (set-marker (process-mark process) end))))
                   1420:   (forth-send-string "\n" (buffer-substring start end) "\n"))
                   1421: 
                   1422: (defun forth-end-of-paragraph ()
                   1423:   (if (looking-at "[\t\n ]+") (skip-chars-backward  "\t\n "))
                   1424:   (if (not (re-search-forward "\n[ \t]*\n" nil t))
                   1425:       (goto-char (point-max))))
                   1426: 
                   1427: (defun forth-send-paragraph ()
                   1428:   "Send the current or the previous paragraph to the Forth process"
                   1429:   (interactive)
                   1430:   (let (end)
                   1431:     (save-excursion
                   1432:       (forth-end-of-paragraph)
                   1433:       (skip-chars-backward  "\t\n ")
                   1434:       (setq end (point))
                   1435:       (if (re-search-backward "\n[ \t]*\n" nil t)
                   1436:          (setq start (point))
                   1437:        (goto-char (point-min)))
                   1438:       (skip-chars-forward  "\t\n ")
                   1439:       (forth-send-region (point) end))))
                   1440:   
                   1441: (defun forth-send-buffer ()
                   1442:   "Send the current buffer to the Forth process."
                   1443:   (interactive)
                   1444:   (if (eq (current-buffer) (forth-process-buffer))
                   1445:       (error "Not allowed to send this buffer's contents to Forth"))
                   1446:   (forth-send-region (point-min) (point-max)))
                   1447: 
                   1448: 
                   1449: ;;;; Basic Process Control
                   1450: 
                   1451: (defun forth-start-process (command-line)
                   1452:   (let ((buffer (get-buffer-create "*forth*")))
                   1453:     (let ((process (get-buffer-process buffer)))
                   1454:       (save-excursion
                   1455:        (set-buffer buffer)
                   1456:        (progn (if process (delete-process process))
                   1457:               (goto-char (point-max))
                   1458:               (setq mode-line-process '(": %s"))
                   1459:               (add-to-global-mode-string 'forth-mode-string)
                   1460:               (setq process
                   1461:                     (apply 'start-process
                   1462:                            (cons forth-program-name
                   1463:                                  (cons buffer
                   1464:                                        (forth-parse-command-line
                   1465:                                         command-line)))))
                   1466:               (set-marker (process-mark process) (point-max))
                   1467:               (forth-process-filter-initialize t)
                   1468:               (forth-modeline-initialize)
                   1469:               (set-process-sentinel process 'forth-process-sentinel)
                   1470:               (set-process-filter process 'forth-process-filter)
                   1471:               (run-hooks 'forth-start-hook)))
                   1472:     buffer)))
                   1473: 
                   1474: (defun forth-parse-command-line (string)
                   1475:   (setq string (substitute-in-file-name string))
                   1476:   (let ((start 0)
                   1477:        (result '()))
                   1478:     (while start
                   1479:       (let ((index (string-match "[ \t]" string start)))
                   1480:        (setq start
                   1481:              (cond ((not index)
                   1482:                     (setq result
                   1483:                           (cons (substring string start)
                   1484:                                 result))
                   1485:                     nil)
                   1486:                    ((= index start)
                   1487:                     (string-match "[^ \t]" string start))
                   1488:                    (t
                   1489:                     (setq result
                   1490:                           (cons (substring string start index)
                   1491:                                 result))
                   1492:                     (1+ index))))))
                   1493:     (nreverse result)))
                   1494: 
                   1495: 
                   1496: (defun forth-process-running-p ()
                   1497:   "True iff there is a Forth process whose status is `run'."
                   1498:   (let ((process (get-process forth-program-name)))
                   1499:     (and process
                   1500:         (eq (process-status process) 'run))))
                   1501: 
                   1502: (defun forth-process-buffer ()
                   1503:   (let ((process (get-process forth-program-name)))
                   1504:     (and process (process-buffer process))))
                   1505: 
                   1506: ;;;; Process Filter
                   1507: 
                   1508: (defun forth-process-sentinel (proc reason)
                   1509:   (let ((inhibit-quit nil))
                   1510:     (forth-process-filter-initialize (eq reason 'run))
                   1511:     (if (eq reason 'run)
                   1512:        (forth-modeline-initialize)
                   1513:        (setq forth-mode-string "")))
                   1514:   (if (and (not (memq reason '(run stop)))
                   1515:           forth-signal-death-message)
                   1516:       (progn (beep)
                   1517:             (message
                   1518: "The Forth process has died!  Do M-x reset-forth to restart it"))))
                   1519: 
                   1520: (defun forth-process-filter-initialize (running-p)
                   1521:   (setq forth-process-filter-queue (cons '() '()))
                   1522:   (setq forth-prompt "ok"))
                   1523: 
                   1524: 
                   1525: (defun forth-process-filter (proc string)
                   1526:   (forth-process-filter-output string)
                   1527:   (forth-process-filter:finish))
                   1528: 
                   1529: (defun forth-process-filter:enqueue (action)
                   1530:   (let ((next (cons action '())))
                   1531:     (if (cdr forth-process-filter-queue)
                   1532:        (setcdr (cdr forth-process-filter-queue) next)
                   1533:        (setcar forth-process-filter-queue next))
                   1534:     (setcdr forth-process-filter-queue next)))
                   1535: 
                   1536: (defun forth-process-filter:finish ()
                   1537:   (while (car forth-process-filter-queue)
                   1538:     (let ((next (car forth-process-filter-queue)))
                   1539:       (setcar forth-process-filter-queue (cdr next))
                   1540:       (if (not (cdr next))
                   1541:          (setcdr forth-process-filter-queue '()))
                   1542:       (apply (car (car next)) (cdr (car next))))))
                   1543: 
                   1544: ;;;; Process Filter Output
                   1545: 
                   1546: (defun forth-process-filter-output (&rest args)
                   1547:   (if (not (and args
                   1548:                (null (cdr args))
                   1549:                (stringp (car args))
                   1550:                (string-equal "" (car args))))
                   1551:       (forth-process-filter:enqueue
                   1552:        (cons 'forth-process-filter-output-1 args))))
                   1553: 
                   1554: (defun forth-process-filter-output-1 (&rest args)
                   1555:   (save-excursion
                   1556:     (forth-goto-output-point)
                   1557:     (apply 'insert-before-markers args)))
                   1558: 
                   1559: (defun forth-guarantee-newlines (n)
                   1560:   (save-excursion
                   1561:     (forth-goto-output-point)
                   1562:     (let ((stop nil))
                   1563:       (while (and (not stop)
                   1564:                  (bolp))
                   1565:        (setq n (1- n))
                   1566:        (if (bobp)
                   1567:            (setq stop t)
                   1568:          (backward-char))))
                   1569:     (forth-goto-output-point)
                   1570:     (while (> n 0)
                   1571:       (insert-before-markers ?\n)
                   1572:       (setq n (1- n)))))
                   1573: 
                   1574: (defun forth-goto-output-point ()
                   1575:   (let ((process (get-process forth-program-name)))
                   1576:     (set-buffer (process-buffer process))
                   1577:     (goto-char (process-mark process))))
                   1578: 
                   1579: (defun forth-modeline-initialize ()
                   1580:   (setq forth-mode-string "  "))
                   1581: 
                   1582: (defun forth-set-runlight (runlight)
                   1583:   (aset forth-mode-string 0 runlight)
                   1584:   (forth-modeline-redisplay))
                   1585: 
                   1586: (defun forth-modeline-redisplay ()
                   1587:   (save-excursion (set-buffer (other-buffer)))
                   1588:   (set-buffer-modified-p (buffer-modified-p))
                   1589:   (sit-for 0))
                   1590: 
                   1591: ;;;; Process Filter Operations
                   1592: 
                   1593: (defun add-to-global-mode-string (x)
                   1594:   (cond ((null global-mode-string)
                   1595:         (setq global-mode-string (list "" x " ")))
                   1596:        ((not (memq x global-mode-string))
                   1597:         (setq global-mode-string
                   1598:               (cons ""
                   1599:                     (cons x
                   1600:                           (cons " "
                   1601:                                 (if (equal "" (car global-mode-string))
                   1602:                                     (cdr global-mode-string)
                   1603:                                     global-mode-string))))))))
                   1604: 
                   1605: 
                   1606: ;; Misc
                   1607: 
                   1608: (setq auto-mode-alist (append auto-mode-alist
1.4       pazsan   1609:                                '(("\\.fs$" . forth-mode))))
1.1       anton    1610: 
                   1611: (defun forth-split ()
                   1612:   (interactive)
                   1613:   (forth-split-1 "*forth*"))
                   1614: 
                   1615: (defun forth-split-1 (buffer)
                   1616:   (if (not (eq (window-buffer) (get-buffer buffer)))
                   1617:       (progn
                   1618:        (delete-other-windows)
                   1619:        (split-window-vertically
                   1620:         (/ (* (screen-height) forth-percent-height) 100))
                   1621:        (other-window 1)
                   1622:        (switch-to-buffer buffer)
                   1623:        (goto-char (point-max))
                   1624:        (other-window 1))))
                   1625:     
                   1626: (defun forth-reload ()
                   1627:   (interactive)
                   1628:   (let ((process (get-process forth-program-name)))
                   1629:     (if process (kill-process process t)))
1.28      anton    1630:   (sleep-for 0 100)
1.1       anton    1631:   (forth-mode))
                   1632: 
                   1633: 
                   1634: ;; Special section for forth-help
                   1635: 
                   1636: (defvar forth-help-buffer "*Forth-help*"
                   1637:   "Buffer used to display the requested documentation.")
                   1638: 
                   1639: (defvar forth-help-load-path nil
                   1640:   "List of directories to search through to find *.doc
                   1641:  (forth-help-file-suffix) files. Nil means current default directory.
                   1642:  The specified directories must contain at least one .doc file. If it
                   1643:  does not and you still want the load-path to scan that directory, create
                   1644:  an empty file dummy.doc.")
                   1645: 
                   1646: (defvar forth-help-file-suffix "*.doc"
                   1647:   "The file names to search for in each directory.")
                   1648: 
                   1649: (setq forth-search-command-prefix "grep -n \"^    [^(]* ")
                   1650: (defvar forth-search-command-suffix "/dev/null")
                   1651: (defvar forth-grep-error-regexp ": No such file or directory")
                   1652: 
                   1653: (defun forth-function-called-at-point ()
                   1654:   "Return the space delimited word a point."
                   1655:   (save-excursion
                   1656:     (save-restriction
                   1657:       (narrow-to-region (max (point-min) (- (point) 1000)) (point-max))
                   1658:       (skip-chars-backward "^ \t\n" (point-min))
                   1659:       (if (looking-at "[ \t\n]")
                   1660:          (forward-char 1))
                   1661:       (let (obj (p (point)))
                   1662:        (skip-chars-forward "^ \t\n")
                   1663:        (buffer-substring p (point))))))
                   1664: 
                   1665: (defun forth-help-names-extend-comp (path-list result)
                   1666:   (cond ((null path-list) result)
                   1667:        ((null (car path-list))
                   1668:         (forth-help-names-extend-comp (cdr path-list) 
                   1669:               (concat result forth-help-file-suffix " ")))
                   1670:        (t (forth-help-names-extend-comp
                   1671:            (cdr path-list) (concat result
                   1672:                                    (expand-file-name (car path-list)) "/"
                   1673:                                    forth-help-file-suffix " ")))))
                   1674: 
                   1675: (defun forth-help-names-extended ()
                   1676:   (if forth-help-load-path
                   1677:       (forth-help-names-extend-comp forth-help-load-path "")
                   1678:     (error "forth-help-load-path not specified")))
                   1679: 
                   1680: 
1.7       anton    1681: ;(define-key forth-mode-map "\C-hf" 'forth-documentation)
1.1       anton    1682: 
                   1683: (defun forth-documentation (function)
                   1684:   "Display the full documentation of FORTH word."
                   1685:   (interactive
                   1686:    (let ((fn (forth-function-called-at-point))
                   1687:         (enable-recursive-minibuffers t)            
                   1688:         search-list
                   1689:         val)
                   1690:      (setq val (read-string (format "Describe forth word (default %s): " fn)))
                   1691:      (list (if (equal val "") fn val))))
                   1692:   (forth-get-doc (concat forth-search-command-prefix
                   1693:                         (grep-regexp-quote (concat function " ("))
                   1694:                         "[^)]*\-\-\" " (forth-help-names-extended)
                   1695:                         forth-search-command-suffix))
                   1696:   (message "C-x C-m switches back to the forth interaction window"))
                   1697: 
                   1698: (defun forth-get-doc (command)
                   1699:   "Display the full documentation of command."
                   1700:   (let ((curwin (get-buffer-window (window-buffer)))
                   1701:        reswin
                   1702:        pointmax)
                   1703:     (with-output-to-temp-buffer forth-help-buffer
                   1704:       (progn
                   1705:        (call-process "sh" nil forth-help-buffer t "-c" command)
                   1706:        (setq reswin (get-buffer-window forth-help-buffer))))
                   1707:     (setq reswin (get-buffer-window forth-help-buffer))
                   1708:     (select-window reswin)
                   1709:     (save-excursion
                   1710:       (goto-char (setq pointmax (point-max)))
                   1711:       (insert "--------------------\n\n"))
                   1712:     (let (fd doc) 
                   1713:       (while (setq fd (forth-get-file-data pointmax))
                   1714:        (setq doc (forth-get-doc-string fd))
                   1715:        (save-excursion
                   1716:          (goto-char (point-max))
                   1717:          (insert (substring (car fd) (string-match "[^/]*$" (car fd)))
                   1718:                  ":\n\n" doc "\n")))
                   1719:       (if (not doc)
                   1720:          (progn (goto-char (point-max)) (insert "Not found"))))
                   1721:     (select-window curwin)))
                   1722:   
                   1723: (defun forth-skip-error-lines ()
                   1724:   (let ((lines 0))
                   1725:     (save-excursion
                   1726:       (while (re-search-forward forth-grep-error-regexp nil t)
                   1727:        (beginning-of-line)
                   1728:        (forward-line 1)
                   1729:        (setq lines (1+ lines))))
                   1730:     (forward-line lines)))
                   1731: 
                   1732: (defun forth-get-doc-string (fd)
                   1733:   "Find file (car fd) and extract documentation from line (nth 1 fd)."
                   1734:   (let (result)
                   1735:     (save-window-excursion
                   1736:       (find-file (car fd))
                   1737:       (goto-line (nth 1 fd))
                   1738:       (if (not (eq (nth 1 fd) (1+ (count-lines (point-min) (point)))))
                   1739:          (error "forth-get-doc-string: serious error"))
                   1740:       (if (not (re-search-backward "\n[\t ]*\n" nil t))
                   1741:          (goto-char (point-min))
                   1742:        (goto-char (match-end 0)))
                   1743:       (let ((p (point)))
                   1744:        (if (not (re-search-forward "\n[\t ]*\n" nil t))
                   1745:            (goto-char (point-max)))
                   1746:        (setq result (buffer-substring p (point))))
                   1747:       (bury-buffer (current-buffer)))
                   1748:     result))
                   1749: 
                   1750: (defun forth-get-file-data (limit)
                   1751:   "Parse grep output and return '(filename line#) list. Return nil when
                   1752:  passing limit."
                   1753:   (forth-skip-error-lines)
                   1754:   (if (< (point) limit)
                   1755:       (let ((result (forth-get-file-data-cont limit)))
                   1756:        (forward-line 1)
                   1757:        (beginning-of-line)
                   1758:        result)))
                   1759: 
                   1760: (defun forth-get-file-data-cont (limit)
                   1761:   (let (result)
                   1762:     (let ((p (point)))
                   1763:       (skip-chars-forward "^:")
                   1764:       (setq result (buffer-substring p (point))))
                   1765:     (if (< (point) limit)
                   1766:        (let ((p (1+ (point))))
                   1767:          (forward-char 1)
                   1768:          (skip-chars-forward "^:")
                   1769:          (list result (string-to-int (buffer-substring p (point))))))))
                   1770: 
                   1771: (defun grep-regexp-quote (str)
                   1772:   (let ((i 0) (m 1) (res ""))
                   1773:     (while (/= m 0)
                   1774:       (setq m (string-to-char (substring str i)))
                   1775:       (if (/= m 0)
                   1776:          (progn
                   1777:            (setq i (1+ i))
                   1778:            (if (string-match (regexp-quote (char-to-string m))
                   1779:                              ".*\\^$[]")
                   1780:                (setq res (concat res "\\")))
                   1781:            (setq res (concat res (char-to-string m))))))
                   1782:     res))
                   1783: 
                   1784: 
1.9       anton    1785: (define-key forth-mode-map "\C-x\C-e" 'compile)
1.1       anton    1786: (define-key forth-mode-map "\C-x\C-n" 'next-error)
1.57    ! dvdkhlng 1787: (require 'compile)
1.1       anton    1788: 
1.6       anton    1789: (defvar forth-compile-command "gforth ")
1.9       anton    1790: ;(defvar forth-compilation-window-percent-height 30)
1.1       anton    1791: 
                   1792: (defun forth-compile (command)
                   1793:   (interactive (list (setq forth-compile-command (read-string "Compile command: " forth-compile-command))))
                   1794:   (forth-split-1 "*compilation*")
                   1795:   (setq ctools-compile-command command)
                   1796:   (compile1 ctools-compile-command "No more errors"))
                   1797: 
                   1798: 
1.12      pazsan   1799: ;;; Forth menu
                   1800: ;;; Mikael Karlsson <qramika@eras70.ericsson.se>
                   1801: 
                   1802: (cond ((string-match "XEmacs\\|Lucid" emacs-version)
                   1803:        (require 'func-menu)
                   1804: 
                   1805:   (defconst fume-function-name-regexp-forth
                   1806:    "^\\(:\\)[ \t]+\\([^ \t]*\\)"
                   1807:    "Expression to get word definitions in Forth.")
                   1808: 
                   1809:   (setq fume-function-name-regexp-alist
                   1810:       (append '((forth-mode . fume-function-name-regexp-forth) 
                   1811:              ) fume-function-name-regexp-alist))
                   1812: 
                   1813:   ;; Find next forth word in the buffer
                   1814:   (defun fume-find-next-forth-function-name (buffer)
                   1815:     "Searches for the next forth word in BUFFER."
                   1816:     (set-buffer buffer)
                   1817:     (if (re-search-forward fume-function-name-regexp nil t)
                   1818:       (let ((beg (match-beginning 2))
                   1819:             (end (match-end 2)))
                   1820:         (cons (buffer-substring beg end) beg))))
                   1821: 
                   1822:   (setq fume-find-function-name-method-alist
                   1823:   (append '((forth-mode    . fume-find-next-forth-function-name))))
                   1824: 
                   1825:   ))
                   1826: ;;; End Forth menu
                   1827: 
                   1828: ;;; File folding of forth-files
                   1829: ;;; uses outline
                   1830: ;;; Toggle activation with M-x fold-f (when editing a forth-file) 
                   1831: ;;; Use f9 to expand, f10 to hide, Or the menubar in xemacs
                   1832: ;;;
                   1833: ;;; Works most of the times but loses sync with the cursor occasionally 
                   1834: ;;; Could be improved by also folding on comments
                   1835: 
                   1836: (require 'outline)
                   1837: 
1.29      pazsan   1838: (defun f-outline-level ()
1.57    ! dvdkhlng 1839:   (cond        ((looking-at "\\`\\\\")
        !          1840:         0)
        !          1841:        ((looking-at "\\\\ SEC")
        !          1842:         0)
        !          1843:        ((looking-at "\\\\ \\\\ .*")
        !          1844:         0)
        !          1845:        ((looking-at "\\\\ DEFS")
        !          1846:         1)
        !          1847:        ((looking-at "\\/\\* ")
        !          1848:         1)
        !          1849:        ((looking-at ": .*")
        !          1850:         1)
        !          1851:        ((looking-at "\\\\G")
        !          1852:         2)
        !          1853:        ((looking-at "[ \t]+\\\\")
        !          1854:         3)))
        !          1855:   
1.12      pazsan   1856: (defun fold-f  ()
                   1857:    (interactive)
                   1858:    (add-hook 'outline-minor-mode-hook 'hide-body)
                   1859: 
                   1860:    ; outline mode header start, i.e. find word definitions
1.29      pazsan   1861: ;;;   (setq  outline-regexp  "^\\(:\\)[ \t]+\\([^ \t]*\\)")
                   1862:    (setq  outline-regexp  "\\`\\\\\\|:\\|\\\\ SEC\\|\\\\G\\|[ \t]+\\\\\\|\\\\ DEFS\\|\\/\\*\\|\\\\ \\\\ .*")
                   1863:    (setq outline-level 'f-outline-level)
1.12      pazsan   1864: 
                   1865:    (outline-minor-mode)
1.30      anton    1866:    (define-key outline-minor-mode-map '(shift up) 'hide-sublevels)
                   1867:    (define-key outline-minor-mode-map '(shift right) 'show-children)
                   1868:    (define-key outline-minor-mode-map '(shift left) 'hide-subtree)
1.57    ! dvdkhlng 1869:    (define-key outline-minor-mode-map '(shift down) 'show-subtree))
1.29      pazsan   1870: 
                   1871: ;;(define-key global-map '(shift up) 'fold-f)
                   1872: 
1.12      pazsan   1873: ;;; end file folding
                   1874: 
                   1875: ;;; func-menu is a package that scans your source file for function definitions
                   1876: ;;; and makes a menubar entry that lets you jump to any particular function
                   1877: ;;; definition by selecting it from the menu.  The following code turns this on
                   1878: ;;; for all of the recognized languages.  Scanning the buffer takes some time,
                   1879: ;;; but not much.
                   1880: ;;;
                   1881: (cond ((string-match "XEmacs\\|Lucid" emacs-version)
                   1882:        (require 'func-menu)
                   1883: ;;       (define-key global-map 'f8 'function-menu)
                   1884:        (add-hook 'find-fible-hooks 'fume-add-menubar-entry)
1.30      anton    1885: ;       (define-key global-map "\C-cg" 'fume-prompt-function-goto)
                   1886: ;       (define-key global-map '(shift button3) 'mouse-function-menu)
1.29      pazsan   1887: ))
1.57    ! dvdkhlng 1888: 
        !          1889: (provide 'forth-mode)
1.29      pazsan   1890: 
1.48      pazsan   1891: ;;; gforth.el ends here

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