Annotation of gforth/gforth.el, revision 1.62

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.
1.59      dvdkhlng   36: ;; Tested with Emacs 19.34, 20.5, 21.1 and XEmacs 21.1
1.48      pazsan     37:  
1.1       anton      38: ;;-------------------------------------------------------------------
                     39: ;; A Forth indentation, documentation search and interaction library
                     40: ;;-------------------------------------------------------------------
                     41: ;;
                     42: ;; Written by Goran Rydqvist, gorry@ida.liu.se, Summer 1988
                     43: ;; Started:    16 July 88
                     44: ;; Version:    2.10
                     45: ;; Last update:        5 December 1989 by Mikael Patel, mip@ida.liu.se
                     46: ;; Last update:        25 June 1990 by Goran Rydqvist, gorry@ida.liu.se
                     47: ;;
                     48: ;; Documentation: See forth-mode (^HF forth-mode)
                     49: ;;-------------------------------------------------------------------
                     50: 
1.48      pazsan     51: ;;; Code:
                     52: 
1.59      dvdkhlng   53: ;(setq debug-on-error t)
1.58      dvdkhlng   54: 
1.55      dvdkhlng   55: ;; Code ripped from `version.el' for compatability with Emacs versions
                     56: ;; prior to 19.23.
1.58      dvdkhlng   57: (if (not (boundp 'emacs-major-version))
                     58:     (defconst emacs-major-version
                     59:       (progn (string-match "^[0-9]+" emacs-version)
                     60:             (string-to-int (match-string 0 emacs-version)))))
                     61: 
                     62: (defun forth-emacs-older (major minor)
                     63:   (or (< emacs-major-version major)
                     64:       (and (= emacs-major-version major) (< emacs-minor-version minor))))
1.55      dvdkhlng   65: 
1.58      dvdkhlng   66: ;; Code ripped from `subr.el' for compatability with Emacs versions
                     67: ;; prior to 20.1
                     68: (eval-when-compile 
                     69:   (if (forth-emacs-older 20 1)
                     70:       (progn
                     71:        (defmacro when (cond &rest body)
                     72:          "If COND yields non-nil, do BODY, else return nil."
                     73:          (list 'if cond (cons 'progn body)))
                     74:        (defmacro unless (cond &rest body)
                     75:          "If COND yields nil, do BODY, else return nil."
                     76:          (cons 'if (cons cond (cons nil body)))))))
                     77: 
                     78: ;; `no-error' argument of require not supported in Emacs versions
                     79: ;; prior to 20.4 :-(
                     80: (defun forth-require (feature)
                     81:   (condition-case err (require feature) (error nil)))
                     82: 
                     83: (require 'font-lock)
1.48      pazsan     84: 
1.58      dvdkhlng   85: ;; define `font-lock-warning-face' in emacs-versions prior to 20.1
                     86: ;; (ripped from `font-lock.el')
                     87: (unless (boundp 'font-lock-warning-face)
                     88:   (message "defining font-lock-warning-face")
                     89:   (make-face 'font-lock-warning-face)
                     90:   (defvar font-lock-warning-face 'font-lock-warning-face)
                     91:   (set-face-foreground font-lock-warning-face "red")
                     92:   (make-face-bold font-lock-warning-face))
                     93: 
1.59      dvdkhlng   94: ;; define `font-lock-constant-face' in XEmacs (just copy
                     95: ;; `font-lock-preprocessor-face')
                     96: (unless (boundp 'font-lock-constant-face)
1.61      dvdkhlng   97:   (copy-face font-lock-preprocessor-face 'font-lock-constant-face))
                     98: 
1.59      dvdkhlng   99: 
1.58      dvdkhlng  100: ;; define `regexp-opt' in emacs versions prior to 20.1 
                    101: ;; (this implementation is extremely inefficient, though)
1.59      dvdkhlng  102: (eval-and-compile (forth-require 'regexp-opt))
                    103: (unless (memq 'regexp-opt features)
1.58      dvdkhlng  104:   (message (concat 
                    105:            "Warning: your Emacs version doesn't support `regexp-opt'. "
                    106:             "Hilighting will be slow."))
                    107:   (defun regexp-opt (STRINGS &optional PAREN)
                    108:     (let ((open (if PAREN "\\(" "")) (close (if PAREN "\\)" "")))
                    109:       (concat open (mapconcat 'regexp-quote STRINGS "\\|") close)))
                    110:   (defun regexp-opt-depth (re)
                    111:     (if (string= (substring re 0 2) "\\(") 1 0)))
                    112: 
1.57      dvdkhlng  113: ; todo:
                    114: ;
                    115: 
                    116: ; Wörter ordentlich hilighten, die nicht auf Whitespace beginnen ( ..)IF
                    117: ; -- mit aktueller Konzeption nicht möglich??
                    118: ;
                    119: ; Konfiguration über customization groups
                    120: ;
                    121: ; Bereich nur auf Wortanfang/ende ausweiten, wenn Anfang bzw Ende in einem 
                    122: ; Wort liegen (?) -- speed!
                    123: ;
                    124: ; 'forth-word' property muss eindeutig sein!
                    125: ;
                    126: ; Forth-Menu 
                    127: ;
                    128: ; Interface zu GForth Prozessen (Patches von Michael Scholz)
                    129: ;
                    130: ; Byte-compile-Code rausschmeißen, Compilieren im Makefile über Emacs
                    131: ; batch-Modus
                    132: ;
                    133: ; forth-help Kram rausschmeißen
                    134: ;
                    135: ; XEmacs Kompatibilität? imenu/speedbar -> fume?
                    136: ; 
                    137: ; Folding neuschreiben (neue Parser-Informationen benutzen)
                    138: 
1.62    ! dvdkhlng  139: ;;; Motion-hooking (dk)
        !           140: ;;;
        !           141: (defun forth-idle-function ()
        !           142:   "Function that is called when Emacs is idle to detect cursor motion
        !           143: in forth-block-mode buffers (which is mainly used for screen number
        !           144: display in).  Currently ignores forth-mode buffers but that may change
        !           145: in the future."
        !           146:   (if (eq major-mode 'forth-block-mode)
        !           147:       (forth-check-motion)))
        !           148: 
        !           149: (defvar forth-idle-function-timer nil 
        !           150:   "Timer that runs `forth-idle-function' or nil if no timer installed.")
        !           151: 
        !           152: (defun forth-install-motion-hook ()
        !           153:   "Install the motion-hooking mechanism.  Currently uses idle timers
        !           154: but might be transparently changed in the future."
        !           155:   (unless forth-idle-function-timer
        !           156:     ;; install idle function only once (first time forth-mode is used)
        !           157:     (setq forth-idle-function-timer 
        !           158:          (run-with-idle-timer .05 t 'forth-idle-function))))
        !           159: 
        !           160: (defvar forth-was-point nil)
        !           161: 
        !           162: (defun forth-check-motion ()
        !           163:   "Run `forth-motion-hooks', if `point' changed since last call.  This
        !           164: used to be called via `post-command-hook' but uses idle timers now as
        !           165: users complaint about lagging performance."
        !           166:   (when (or (eq forth-was-point nil) (/= forth-was-point (point)))
        !           167:     (setq forth-was-point (point))
        !           168:     (run-hooks 'forth-motion-hooks)))
        !           169: 
        !           170: 
        !           171: ;;; Hilighting and indentation engine (dk)
1.48      pazsan    172: ;;;
1.55      dvdkhlng  173: (defvar forth-disable-parser nil
                    174:   "*Non-nil means to disable on-the-fly parsing of Forth-code.
                    175: 
                    176: This will disable hilighting of forth-mode buffers and will decrease
                    177: the smartness of the indentation engine. Only set it to non-nil, if
                    178: your computer is very slow. To disable hilighting, set
                    179: `forth-hilight-level' to zero.")
                    180: 
                    181: (defvar forth-jit-parser nil
                    182:   "*Non-nil means to parse Forth-code just-in-time.
                    183: 
                    184: This eliminates the need for initially parsing forth-mode buffers and
                    185: thus speeds up loading of Forth files. That feature is only available
                    186: in Emacs21 (and newer versions).")
                    187: 
1.48      pazsan    188: (defvar forth-words nil 
                    189:   "List of words for hilighting and recognition of parsed text areas. 
1.55      dvdkhlng  190: 
                    191: Hilighting of object-oriented Forth code is achieved, by appending either
                    192: `forth-objects-words' or `forth-oof-words' to the list, depending on the values of `forth-use-objects' or `forth-use-oof'.
                    193: 
                    194: After `forth-words' changed, `forth-compile-words' must be called to
                    195: make the changes take effect.
1.48      pazsan    196: 
                    197: Each item of `forth-words' has the form 
                    198:    (MATCHER TYPE HILIGHT . &optional PARSED-TEXT ...)
                    199: 
                    200: MATCHER is either a list of strings to match, or a REGEXP.
                    201:    If it's a REGEXP, it should not be surrounded by '\\<' or '\\>', since 
                    202:    that'll be done automatically by the search routines.
                    203: 
                    204: TYPE should be one of 'definiton-starter', 'definition-ender', 'compile-only',
                    205:    'immediate' or 'non-immediate'. Those information are required to determine
                    206:    whether a word actually parses (and whether that parsed text needs to be
                    207:    hilighted).
                    208: 
                    209: HILIGHT is a cons cell of the form (FACE . MINIMUM-LEVEL)
                    210:    Where MINIMUM-LEVEL specifies the minimum value of `forth-hilight-level',
                    211:    that's required for matching text to be hilighted.
                    212: 
                    213: PARSED-TEXT specifies whether and how a word parses following text. You can
                    214:    specify as many subsequent PARSED-TEXT as you wish, but that shouldn't be
                    215:    necessary very often. It has the following form:
                    216:    (DELIM-REGEXP SKIP-LEADING-FLAG PARSED-TYPE HILIGHT)
                    217: 
                    218: DELIM-REGEXP is a regular expression that should match strings of length 1,
                    219:    which are delimiters for the parsed text.
                    220: 
                    221: A non-nil value for PARSE-LEADING-FLAG means, that leading delimiter strings
                    222:    before parsed text should be skipped. This is the parsing behaviour of the
                    223:    Forth word WORD. Set it to t for name-parsing words, nil for comments and
                    224:    strings.
                    225: 
                    226: PARSED-TYPE specifies what kind of text is parsed. It should be on of 'name',
                    227:    'string' or 'comment'.")
                    228: (setq forth-words
                    229:       '(
                    230:        (("[") definition-ender (font-lock-keyword-face . 1))
                    231:        (("]" "]l") definition-starter (font-lock-keyword-face . 1))
                    232:        ((":") definition-starter (font-lock-keyword-face . 1)
                    233:         "[ \t\n]" t name (font-lock-function-name-face . 3))
                    234:        (("immediate" "compile-only" "restrict")
                    235:         immediate (font-lock-keyword-face . 1))
                    236:        (("does>") compile-only (font-lock-keyword-face . 1))
                    237:        ((":noname") definition-starter (font-lock-keyword-face . 1))
                    238:        ((";" ";code") definition-ender (font-lock-keyword-face . 1))
                    239:        (("include" "require" "needs" "use") 
                    240:         non-immediate (font-lock-keyword-face . 1) 
                    241:         "[\n\t ]" t string (font-lock-string-face . 1))
                    242:        (("included" "required" "thru" "load")
                    243:         non-immediate (font-lock-keyword-face . 1))
                    244:        (("[char]") compile-only (font-lock-keyword-face . 1)
                    245:         "[ \t\n]" t string (font-lock-string-face . 1))
                    246:        (("char") non-immediate (font-lock-keyword-face . 1)
                    247:         "[ \t\n]" t string (font-lock-string-face . 1))
                    248:        (("s\"" "c\"") immediate (font-lock-string-face . 1)
                    249:         "[\"\n]" nil string (font-lock-string-face . 1))
                    250:        ((".\"") compile-only (font-lock-string-face . 1)
                    251:         "[\"\n]" nil string (font-lock-string-face . 1))
                    252:        (("abort\"") compile-only (font-lock-keyword-face . 1)
                    253:         "[\"\n]" nil string (font-lock-string-face . 1))
                    254:        (("{") compile-only (font-lock-variable-name-face . 1)
                    255:         "[\n}]" nil name (font-lock-variable-name-face . 1))
                    256:        ((".(" "(") immediate (font-lock-comment-face . 1)
                    257:          ")" nil comment (font-lock-comment-face . 1))
                    258:        (("\\" "\\G") immediate (font-lock-comment-face . 1)
                    259:         "[\n]" nil comment (font-lock-comment-face . 1))
                    260:          
                    261:        (("[if]" "[?do]" "[do]" "[for]" "[begin]" 
                    262:          "[endif]" "[then]" "[loop]" "[+loop]" "[next]" "[until]" "[repeat]"
                    263:          "[again]" "[while]" "[else]")
                    264:         immediate (font-lock-keyword-face . 2))
                    265:        (("[ifdef]" "[ifundef]") immediate (font-lock-keyword-face . 2)
                    266:         "[ \t\n]" t name (font-lock-function-name-face . 3))
                    267:        (("if" "begin" "ahead" "do" "?do" "+do" "u+do" "-do" "u-do" "for" 
1.60      anton     268:          "case" "of" "?dup-if" "?dup-0=-if" "then" "endif" "until"
                    269:          "repeat" "again"
1.48      pazsan    270:          "loop" "+loop" "-loop" "next" "endcase" "endof" "else" "while" "try"
                    271:          "recover" "endtry" "assert(" "assert0(" "assert1(" "assert2(" 
                    272:          "assert3(" ")" "<interpretation" "<compilation" "interpretation>" 
                    273:          "compilation>")
                    274:         compile-only (font-lock-keyword-face . 2))
                    275: 
                    276:        (("true" "false" "c/l" "bl" "cell" "pi" "w/o" "r/o" "r/w") 
                    277:         non-immediate (font-lock-constant-face . 2))
1.56      dvdkhlng  278:        (("~~" "break:" "dbg") compile-only (font-lock-warning-face . 2))
1.55      dvdkhlng  279:        (("break\"") compile-only (font-lock-warning-face . 1)
                    280:         "[\"\n]" nil string (font-lock-string-face . 1))
1.48      pazsan    281:        (("postpone" "[is]" "defers" "[']" "[compile]") 
                    282:         compile-only (font-lock-keyword-face . 2)
                    283:         "[ \t\n]" t name (font-lock-function-name-face . 3))
                    284:        (("is" "what's") immediate (font-lock-keyword-face . 2)
                    285:         "[ \t\n]" t name (font-lock-function-name-face . 3))
1.56      dvdkhlng  286:        (("<is>" "'" "see") non-immediate (font-lock-keyword-face . 2)
1.48      pazsan    287:         "[ \t\n]" t name (font-lock-function-name-face . 3))
                    288:        (("[to]") compile-only (font-lock-keyword-face . 2)
                    289:         "[ \t\n]" t name (font-lock-variable-name-face . 3))
                    290:        (("to") immediate (font-lock-keyword-face . 2)
                    291:         "[ \t\n]" t name (font-lock-variable-name-face . 3))
                    292:        (("<to>") non-immediate (font-lock-keyword-face . 2)
                    293:         "[ \t\n]" t name (font-lock-variable-name-face . 3))
                    294: 
                    295:        (("create" "variable" "constant" "2variable" "2constant" "fvariable"
                    296:          "fconstant" "value" "field" "user" "vocabulary" 
                    297:          "create-interpret/compile")
                    298:         non-immediate (font-lock-type-face . 2)
                    299:         "[ \t\n]" t name (font-lock-variable-name-face . 3))
1.54      dvdkhlng  300:        ("\\S-+%" non-immediate (font-lock-type-face . 2))
1.48      pazsan    301:        (("defer" "alias" "create-interpret/compile:") 
                    302:         non-immediate (font-lock-type-face . 1)
                    303:         "[ \t\n]" t name (font-lock-function-name-face . 3))
                    304:        (("end-struct") non-immediate (font-lock-keyword-face . 2)
                    305:         "[ \t\n]" t name (font-lock-type-face . 3))
                    306:        (("struct") non-immediate (font-lock-keyword-face . 2))
                    307:        ("-?[0-9]+\\(\\.[0-9]*e\\(-?[0-9]+\\)?\\|\\.?[0-9a-f]*\\)" 
                    308:         immediate (font-lock-constant-face . 3))
                    309:        ))
                    310: 
1.51      dvdkhlng  311: (defvar forth-use-objects nil 
                    312:   "*Non-nil makes forth-mode also hilight words from the \"Objects\" package.")
1.57      dvdkhlng  313: (defvar forth-objects-words
                    314:   '(((":m") definition-starter (font-lock-keyword-face . 1)
                    315:      "[ \t\n]" t name (font-lock-function-name-face . 3))
                    316:     (("m:") definition-starter (font-lock-keyword-face . 1))
                    317:     ((";m") definition-ender (font-lock-keyword-face . 1))
                    318:     (("[current]" "[parent]") compile-only (font-lock-keyword-face . 1)
                    319:      "[ \t\n]" t name (font-lock-function-name-face . 3))
                    320:     (("current" "overrides") non-immediate (font-lock-keyword-face . 2)
                    321:      "[ \t\n]" t name (font-lock-function-name-face . 3))
                    322:     (("[to-inst]") compile-only (font-lock-keyword-face . 2)
                    323:      "[ \t\n]" t name (font-lock-variable-name-face . 3))
                    324:     (("[bind]") compile-only (font-lock-keyword-face . 2)
                    325:      "[ \t\n]" t name (font-lock-type-face . 3)
                    326:      "[ \t\n]" t name (font-lock-function-name-face . 3))
                    327:     (("bind") non-immediate (font-lock-keyword-face . 2)
                    328:      "[ \t\n]" t name (font-lock-type-face . 3)
                    329:      "[ \t\n]" t name (font-lock-function-name-face . 3))
                    330:     (("inst-var" "inst-value") non-immediate (font-lock-type-face . 2)
                    331:      "[ \t\n]" t name (font-lock-variable-name-face . 3))
                    332:     (("method" "selector")
                    333:      non-immediate (font-lock-type-face . 1)
                    334:      "[ \t\n]" t name (font-lock-function-name-face . 3))
                    335:     (("end-class" "end-interface")
                    336:      non-immediate (font-lock-keyword-face . 2)
                    337:      "[ \t\n]" t name (font-lock-type-face . 3))
                    338:     (("public" "protected" "class" "exitm" "implementation" "interface"
                    339:       "methods" "end-methods" "this") 
                    340:      non-immediate (font-lock-keyword-face . 2))
                    341:     (("object") non-immediate (font-lock-type-face . 2)))
1.51      dvdkhlng  342:   "Hilighting description for words of the \"Objects\" package")
1.57      dvdkhlng  343: 
1.48      pazsan    344: 
1.51      dvdkhlng  345: (defvar forth-use-oof nil 
                    346:   "*Non-nil makes forth-mode also hilight words from the \"OOF\" package.")
1.57      dvdkhlng  347: (defvar forth-oof-words 
                    348:   '((("class") non-immediate (font-lock-keyword-face . 2)
                    349:      "[ \t\n]" t name (font-lock-type-face . 3))
                    350:     (("var") non-immediate (font-lock-type-face . 2)
                    351:      "[ \t\n]" t name (font-lock-variable-name-face . 3))
                    352:     (("method" "early") non-immediate (font-lock-type-face . 2)
                    353:      "[ \t\n]" t name (font-lock-function-name-face . 3))
                    354:     (("::" "super" "bind" "bound" "link") 
                    355:      immediate (font-lock-keyword-face . 2)
                    356:      "[ \t\n]" t name (font-lock-function-name-face . 3))
                    357:     (("ptr" "asptr" "[]") 
                    358:      immediate (font-lock-keyword-face . 2)
                    359:      "[ \t\n]" t name (font-lock-variable-name-face . 3))
                    360:     (("class;" "how:" "self" "new" "new[]" "definitions" "class?" "with"
                    361:       "endwith")
                    362:      non-immediate (font-lock-keyword-face . 2))
                    363:     (("object") non-immediate (font-lock-type-face . 2)))
1.51      dvdkhlng  364:   "Hilighting description for words of the \"OOF\" package")
1.48      pazsan    365: 
1.49      dvdkhlng  366: (defvar forth-local-words nil 
                    367:   "List of Forth words to prepend to `forth-words'. Should be set by a 
1.51      dvdkhlng  368:  forth source, using a local variables list at the end of the file 
                    369:  (\"Local Variables: ... forth-local-words: ... End:\" construct).") 
                    370: 
                    371: (defvar forth-custom-words nil
                    372:   "List of Forth words to prepend to `forth-words'. Should be set in your
                    373:  .emacs.")
1.49      dvdkhlng  374: 
1.48      pazsan    375: (defvar forth-hilight-level 3 "*Level of hilighting of Forth code.")
1.51      dvdkhlng  376: 
1.48      pazsan    377: (defvar forth-compiled-words nil "Compiled representation of `forth-words'.")
                    378: 
1.57      dvdkhlng  379: (defvar forth-indent-words nil 
                    380:   "List of words that have indentation behaviour.
                    381: Each element of `forth-indent-words' should have the form
                    382:    (MATCHER INDENT1 INDENT2 &optional TYPE) 
                    383:   
                    384: MATCHER is either a list of strings to match, or a REGEXP.
                    385:    If it's a REGEXP, it should not be surrounded by `\\<` or `\\>`, since 
                    386:    that'll be done automatically by the search routines.
                    387: 
                    388: TYPE might be omitted. If it's specified, the only allowed value is 
                    389:    currently the symbol `non-immediate', meaning that the word will not 
                    390:    have any effect on indentation inside definitions. (:NONAME is a good 
                    391:    example for this kind of word).
                    392: 
                    393: INDENT1 specifies how to indent a word that's located at a line's begin,
                    394:    following any number of whitespaces.
                    395: 
                    396: INDENT2 specifies how to indent words that are not located at a line's begin.
                    397: 
                    398: INDENT1 and INDENT2 are indentation specifications of the form
                    399:    (SELF-INDENT . NEXT-INDENT), where SELF-INDENT is a numerical value, 
                    400:    specifying how the matching line and all following lines are to be 
                    401:    indented, relative to previous lines. NEXT-INDENT specifies how to indent 
                    402:    following lines, relative to the matching line.
                    403:   
                    404:    Even values of SELF-INDENT and NEXT-INDENT correspond to multiples of
                    405:    `forth-indent-level'. Odd values get an additional 
                    406:    `forth-minor-indent-level' added/substracted. Eg a value of -2 indents
                    407:    1 * forth-indent-level  to the left, wheras 3 indents 
                    408:    1 * forth-indent-level + forth-minor-indent-level  columns to the right.")
                    409: 
                    410: (setq forth-indent-words
                    411:       '((("if" "begin" "do" "?do" "+do" "-do" "u+do"
                    412:          "u-do" "?dup-if" "?dup-0=-if" "case" "of" "try" 
                    413:          "[if]" "[ifdef]" "[ifundef]" "[begin]" "[for]" "[do]" "[?do]")
                    414:         (0 . 2) (0 . 2))
                    415:        ((":" ":noname" "code" "struct" "m:" ":m" "class" "interface")
                    416:         (0 . 2) (0 . 2) non-immediate)
                    417:        ("\\S-+%$" (0 . 2) (0 . 0) non-immediate)
                    418:        ((";" ";m") (-2 . 0) (0 . -2))
1.60      anton     419:        (("again" "repeat" "then" "endif" "endtry" "endcase" "endof" 
1.57      dvdkhlng  420:          "[then]" "[endif]" "[loop]" "[+loop]" "[next]" 
                    421:          "[until]" "[repeat]" "[again]" "loop")
                    422:         (-2 . 0) (0 . -2))
                    423:        (("end-code" "end-class" "end-interface" "end-class-noname" 
                    424:          "end-interface-noname" "end-struct" "class;")
                    425:         (-2 . 0) (0 . -2) non-immediate)
                    426:        (("protected" "public" "how:") (-1 . 1) (0 . 0) non-immediate)
                    427:        (("+loop" "-loop" "until") (-2 . 0) (-2 . 0))
                    428:        (("else" "recover" "[else]") (-2 . 2) (0 . 0))
                    429:        (("while" "does>" "[while]") (-1 . 1) (0 . 0))
                    430:        (("\\g") (-2 . 2) (0 . 0))))
                    431: 
                    432: (defvar forth-local-indent-words nil 
                    433:   "List of Forth words to prepend to `forth-indent-words', when a forth-mode
                    434: buffer is created. Should be set by a Forth source, using a local variables 
                    435: list at the end of the file (\"Local Variables: ... forth-local-words: ... 
                    436: End:\" construct).")
1.51      dvdkhlng  437: 
1.57      dvdkhlng  438: (defvar forth-custom-indent-words nil
                    439:   "List of Forth words to prepend to `forth-indent-words'. Should be set in
                    440:  your .emacs.")
1.48      pazsan    441: 
1.57      dvdkhlng  442: (defvar forth-indent-level 4
                    443:   "*Indentation of Forth statements.")
                    444: (defvar forth-minor-indent-level 2
                    445:   "*Minor indentation of Forth statements.")
                    446: (defvar forth-compiled-indent-words nil)
1.48      pazsan    447: 
1.55      dvdkhlng  448: ;(setq debug-on-error t)
1.48      pazsan    449: 
1.50      dvdkhlng  450: ;; Filter list by predicate. This is a somewhat standard function for 
1.48      pazsan    451: ;; functional programming languages. So why isn't it already implemented 
                    452: ;; in Lisp??
1.50      dvdkhlng  453: (defun forth-filter (predicate list)
1.48      pazsan    454:   (let ((filtered nil))
                    455:     (mapcar (lambda (item)
1.50      dvdkhlng  456:              (when (funcall predicate item)
1.48      pazsan    457:                (if filtered
                    458:                    (nconc filtered (list item))
                    459:                  (setq filtered (cons item nil))))
                    460:              nil) list)
                    461:     filtered))
                    462: 
                    463: ;; Helper function for `forth-compile-word': return whether word has to be
                    464: ;; added to the compiled word list, for syntactic parsing and hilighting.
                    465: (defun forth-words-filter (word)
                    466:   (let* ((hilight (nth 2 word))
                    467:         (level (cdr hilight))
                    468:         (parsing-flag (nth 3 word)))
                    469:     (or parsing-flag 
                    470:        (<= level forth-hilight-level))))
                    471: 
                    472: ;; Helper function for `forth-compile-word': translate one entry from 
                    473: ;; `forth-words' into the form  (regexp regexp-depth word-description)
                    474: (defun forth-compile-words-mapper (word)
1.59      dvdkhlng  475:   ;; warning: we cannot rely on regexp-opt's PAREN argument, since
                    476:   ;; XEmacs will use shy parens by default :-(
1.48      pazsan    477:   (let* ((matcher (car word))
1.59      dvdkhlng  478:         (regexp 
                    479:          (concat "\\(" (cond ((stringp matcher) matcher)
                    480:                              ((listp matcher) (regexp-opt matcher))
                    481:                              (t (error "Invalid matcher `%s'")))
                    482:                  "\\)"))
1.48      pazsan    483:         (depth (regexp-opt-depth regexp))
                    484:         (description (cdr word)))
                    485:     (list regexp depth description)))
                    486: 
                    487: ;; Read `words' and create a compiled representation suitable for efficient
                    488: ;; parsing of the form  
                    489: ;; (regexp (subexp-count word-description) (subexp-count2 word-description2)
                    490: ;;  ...)
1.49      dvdkhlng  491: (defun forth-compile-wordlist (words)
1.48      pazsan    492:   (let* ((mapped (mapcar 'forth-compile-words-mapper words))
                    493:         (regexp (concat "\\<\\(" 
                    494:                         (mapconcat 'car mapped "\\|")
                    495:                         "\\)\\>"))
                    496:         (sub-count 2)
                    497:         (sub-list (mapcar 
                    498:                    (lambda (i) 
                    499:                      (let ((sub (cons sub-count (nth 2 i))))
                    500:                        (setq sub-count (+ sub-count (nth 1 i)))
                    501:                        sub 
                    502:                        )) 
                    503:                    mapped)))
                    504:     (let ((result (cons regexp sub-list)))
                    505:       (byte-compile 'result)
                    506:       result)))
                    507: 
1.49      dvdkhlng  508: (defun forth-compile-words ()
                    509:   "Compile the the words from `forth-words' and `forth-indent-words' into
                    510:  the format that's later used for doing the actual hilighting/indentation.
1.51      dvdkhlng  511:  Store the resulting compiled wordlists in `forth-compiled-words' and 
1.49      dvdkhlng  512: `forth-compiled-indent-words', respective"
                    513:   (setq forth-compiled-words 
                    514:        (forth-compile-wordlist 
                    515:         (forth-filter 'forth-words-filter forth-words)))
                    516:   (setq forth-compiled-indent-words 
                    517:        (forth-compile-wordlist forth-indent-words)))
                    518: 
                    519: (defun forth-hack-local-variables ()
1.51      dvdkhlng  520:   "Parse and bind local variables, set in the contents of the current 
                    521:  forth-mode buffer. Prepend `forth-local-words' to `forth-words' and 
                    522:  `forth-local-indent-words' to `forth-indent-words'."
1.49      dvdkhlng  523:   (hack-local-variables)
                    524:   (setq forth-words (append forth-local-words forth-words))
                    525:   (setq forth-indent-words (append forth-local-indent-words 
                    526:                                   forth-indent-words)))
                    527: 
1.51      dvdkhlng  528: (defun forth-customize-words ()
                    529:   "Add the words from `forth-custom-words' and `forth-custom-indent-words'
                    530:  to `forth-words' and `forth-indent-words', respective. Add 
                    531:  `forth-objects-words' and/or `forth-oof-words' to `forth-words', if
                    532:  `forth-use-objects' and/or `forth-use-oof', respective is set."
                    533:   (setq forth-words (append forth-custom-words forth-words
                    534:                            (if forth-use-oof forth-oof-words nil)
                    535:                            (if forth-use-objects forth-objects-words nil)))
                    536:   (setq forth-indent-words (append 
                    537:                            forth-custom-indent-words forth-indent-words)))
                    538: 
                    539: 
                    540: 
1.48      pazsan    541: ;; get location of first character of previous forth word that's got 
                    542: ;; properties
                    543: (defun forth-previous-start (pos)
                    544:   (let* ((word (get-text-property pos 'forth-word))
                    545:         (prev (previous-single-property-change 
                    546:                (min (point-max) (1+ pos)) 'forth-word 
                    547:                (current-buffer) (point-min))))
                    548:     (if (or (= (point-min) prev) word) prev
                    549:       (if (get-text-property (1- prev) 'forth-word)
                    550:          (previous-single-property-change 
                    551:           prev 'forth-word (current-buffer) (point-min))
                    552:        (point-min)))))
                    553: 
                    554: ;; Get location of the last character of the current/next forth word that's
                    555: ;; got properties, text that's parsed by the word is considered as parts of 
                    556: ;; the word.
                    557: (defun forth-next-end (pos)
                    558:   (let* ((word (get-text-property pos 'forth-word))
                    559:         (next (next-single-property-change pos 'forth-word 
                    560:                                            (current-buffer) (point-max))))
                    561:     (if word next
                    562:       (if (get-text-property next 'forth-word)
                    563:          (next-single-property-change 
                    564:           next 'forth-word (current-buffer) (point-max))
                    565:        (point-max)))))
                    566: 
                    567: (defun forth-next-whitespace (pos)
                    568:   (save-excursion
                    569:     (goto-char pos)
                    570:     (skip-syntax-forward "-" (point-max))
                    571:     (point)))
                    572: (defun forth-previous-word (pos)
                    573:   (save-excursion
                    574:     (goto-char pos)
                    575:     (re-search-backward "\\<" pos (point-min) 1)
                    576:     (point)))
                    577: 
                    578: ;; Delete all properties, used by Forth mode, from `from' to `to'.
                    579: (defun forth-delete-properties (from to)
                    580:   (remove-text-properties 
1.55      dvdkhlng  581:    from to '(face nil fontified nil 
                    582:                  forth-parsed nil forth-word nil forth-state nil)))
1.48      pazsan    583: 
                    584: ;; Get the index of the branch of the most recently evaluated regular 
                    585: ;; expression that matched. (used for identifying branches "a\\|b\\|c...")
                    586: (defun forth-get-regexp-branch ()
                    587:   (let ((count 2))
1.59      dvdkhlng  588:     (while (not (condition-case err (match-beginning count)
                    589:                  (args-out-of-range t)))  ; XEmacs requires error handling
1.48      pazsan    590:       (setq count (1+ count)))
                    591:     count))
                    592: 
                    593: ;; seek to next forth-word and return its "word-description"
                    594: (defun forth-next-known-forth-word (to)
                    595:   (if (<= (point) to)
                    596:       (progn
                    597:        (let* ((regexp (car forth-compiled-words))
                    598:               (pos (re-search-forward regexp to t)))
                    599:          (if pos (let ((branch (forth-get-regexp-branch))
                    600:                        (descr (cdr forth-compiled-words)))
                    601:                    (goto-char (match-beginning 0))
                    602:                    (cdr (assoc branch descr)))
                    603:            'nil)))
                    604:     nil))
                    605: 
                    606: ;; Set properties of forth word at `point', eventually parsing subsequent 
                    607: ;; words, and parsing all whitespaces. Set point to delimiter after word.
                    608: ;; The word, including it's parsed text gets the `forth-word' property, whose 
                    609: ;; value is unique, and may be used for getting the word's start/end 
                    610: ;; positions.
                    611: (defun forth-set-word-properties (state data)
                    612:   (let* ((start (point))
                    613:         (end (progn (re-search-forward "[ \t]\\|$" (point-max) 1)
                    614:                     (point)))
                    615:         (type (car data))
                    616:         (hilight (nth 1 data))
                    617:         (bad-word (and (not state) (eq type 'compile-only)))
                    618:         (hlface (if bad-word font-lock-warning-face
                    619:                   (if (<= (cdr hilight) forth-hilight-level)
                    620:                       (car hilight) nil))))
                    621:     (when hlface (put-text-property start end 'face hlface))
                    622:     ;; if word parses in current state, process parsed range of text
                    623:     (when (or (not state) (eq type 'compile-only) (eq type 'immediate))
                    624:       (let ((parse-data (nthcdr 2 data)))
                    625:        (while parse-data
                    626:          (let ((delim (nth 0 parse-data))
                    627:                (skip-leading (nth 1 parse-data))
                    628:                (parse-type (nth 2 parse-data))
                    629:                (parsed-hilight (nth 3 parse-data))
                    630:                (parse-start (point))
                    631:                (parse-end))
                    632:            (when skip-leading
                    633:              (while (and (looking-at delim) (> (match-end 0) (point))
                    634:                          (not (looking-at "\n")))
                    635:                (forward-char)))
                    636:            (re-search-forward delim (point-max) 1)
                    637:            (setq parse-end (point))
                    638:            (forth-delete-properties end parse-end)
                    639:            (when (<= (cdr parsed-hilight) forth-hilight-level)
                    640:              (put-text-property 
                    641:               parse-start parse-end 'face (car parsed-hilight)))
                    642:            (put-text-property 
                    643:             parse-start parse-end 'forth-parsed parse-type)
                    644:            (setq end parse-end)
                    645:            (setq parse-data (nthcdr 4 parse-data))))))
                    646:     (put-text-property start end 'forth-word start)))
                    647: 
                    648: ;; Search for known Forth words in the range `from' to `to', using 
                    649: ;; `forth-next-known-forth-word' and set their properties via 
                    650: ;; `forth-set-word-properties'.
1.51      dvdkhlng  651: (defun forth-update-properties (from to &optional loudly)
1.48      pazsan    652:   (save-excursion
1.51      dvdkhlng  653:     (let ((msg-count 0) (state) (word-descr) (last-location))
1.48      pazsan    654:       (goto-char (forth-previous-word (forth-previous-start 
                    655:                                       (max (point-min) (1- from)))))
                    656:       (setq to (forth-next-end (min (point-max) (1+ to))))
                    657:       ;; `to' must be on a space delimiter, if a parsing word was changed
                    658:       (setq to (forth-next-whitespace to))
                    659:       (setq state (get-text-property (point) 'forth-state))
                    660:       (setq last-location (point))
                    661:       (forth-delete-properties (point) to)
1.55      dvdkhlng  662:       (put-text-property (point) to 'fontified t)
1.48      pazsan    663:       ;; hilight loop...
                    664:       (while (setq word-descr (forth-next-known-forth-word to))
1.51      dvdkhlng  665:        (when loudly
                    666:          (when (equal 0 (% msg-count 100))
                    667:            (message "Parsing Forth code...%s"
                    668:                     (make-string (/ msg-count 100) ?.)))
                    669:          (setq msg-count (1+ msg-count)))
1.48      pazsan    670:        (forth-set-word-properties state word-descr)
                    671:        (when state (put-text-property last-location (point) 'forth-state t))
                    672:        (let ((type (car word-descr)))
                    673:          (if (eq type 'definition-starter) (setq state t))
                    674:          (if (eq type 'definition-ender) (setq state nil))
                    675:          (setq last-location (point))))
                    676:       ;; update state property up to `to'
                    677:       (if (and state (< (point) to))
                    678:          (put-text-property last-location to 'forth-state t))
                    679:       ;; extend search if following state properties differ from current state
                    680:       (if (< to (point-max))
                    681:          (if (not (equal state (get-text-property (1+ to) 'forth-state)))
                    682:              (let ((extend-to (next-single-property-change 
                    683:                                to 'forth-state (current-buffer) (point-max))))
                    684:                (forth-update-properties to extend-to))
                    685:            ))
                    686:       )))
                    687: 
                    688: ;; save-buffer-state borrowed from `font-lock.el'
                    689: (eval-when-compile 
                    690:   (defmacro forth-save-buffer-state (varlist &rest body)
                    691:     "Bind variables according to VARLIST and eval BODY restoring buffer state."
                    692:     (` (let* ((,@ (append varlist
                    693:                   '((modified (buffer-modified-p)) (buffer-undo-list t)
                    694:                     (inhibit-read-only t) (inhibit-point-motion-hooks t)
                    695:                     before-change-functions after-change-functions
                    696:                     deactivate-mark buffer-file-name buffer-file-truename))))
                    697:         (,@ body)
                    698:         (when (and (not modified) (buffer-modified-p))
                    699:           (set-buffer-modified-p nil))))))
                    700: 
                    701: ;; Function that is added to the `change-functions' hook. Calls 
                    702: ;; `forth-update-properties' and keeps care of disabling undo information
                    703: ;; and stuff like that.
1.51      dvdkhlng  704: (defun forth-change-function (from to len &optional loudly)
1.48      pazsan    705:   (save-match-data
1.55      dvdkhlng  706:     (forth-save-buffer-state 
                    707:      () 
                    708:      (unless forth-disable-parser (forth-update-properties from to loudly))
                    709:      (forth-update-warn-long-lines))))
                    710: 
                    711: (defun forth-fontification-function (from)
                    712:   "Function to be called from `fontification-functions' of Emacs 21."
                    713:   (save-match-data
                    714:     (forth-save-buffer-state
                    715:      ((to (min (point-max) (+ from 100))))
                    716:      (unless (or forth-disable-parser (not forth-jit-parser)
                    717:                 (get-text-property from 'fontified))
                    718:        (forth-update-properties from to)))))
1.48      pazsan    719: 
                    720: (eval-when-compile
                    721:   (byte-compile 'forth-set-word-properties)
                    722:   (byte-compile 'forth-next-known-forth-word)
                    723:   (byte-compile 'forth-update-properties)
                    724:   (byte-compile 'forth-delete-properties)
                    725:   (byte-compile 'forth-get-regexp-branch)) 
                    726: 
1.51      dvdkhlng  727: ;;; imenu support
                    728: ;;;
1.52      dvdkhlng  729: (defvar forth-defining-words 
                    730:   '("VARIABLE" "CONSTANT" "2VARIABLE" "2CONSTANT" "FVARIABLE" "FCONSTANT"
                    731:    "USER" "VALUE" "field" "end-struct" "VOCABULARY" "CREATE" ":" "CODE"
                    732:    "DEFER" "ALIAS")
1.53      dvdkhlng  733:   "List of words, that define the following word.
1.55      dvdkhlng  734: Used for imenu index generation.")
1.52      dvdkhlng  735: 
1.57      dvdkhlng  736: (defvar forth-defining-words-regexp nil 
                    737:   "Regexp that's generated for matching `forth-defining-words'")
1.52      dvdkhlng  738:  
1.51      dvdkhlng  739: (defun forth-next-definition-starter ()
                    740:   (progn
1.52      dvdkhlng  741:     (let* ((pos (re-search-forward forth-defining-words-regexp (point-max) t)))
1.51      dvdkhlng  742:       (if pos
                    743:          (if (or (text-property-not-all (match-beginning 0) (match-end 0) 
1.52      dvdkhlng  744:                                         'forth-parsed nil)
                    745:                  (text-property-not-all (match-beginning 0) (match-end 0)
                    746:                                         'forth-state nil)) 
1.51      dvdkhlng  747:              (forth-next-definition-starter)
                    748:            t)
                    749:        nil))))
                    750: 
                    751: (defun forth-create-index ()
1.52      dvdkhlng  752:   (let* ((forth-defining-words-regexp 
                    753:          (concat "\\<\\(" (regexp-opt forth-defining-words) "\\)\\>"))
1.51      dvdkhlng  754:         (index nil))
                    755:     (goto-char (point-min))
                    756:     (while (forth-next-definition-starter)
                    757:       (if (looking-at "[ \t]*\\([^ \t\n]+\\)")
                    758:          (setq index (cons (cons (match-string 1) (point)) index))))
                    759:     index))
                    760: 
1.57      dvdkhlng  761: ;; top-level require is executed at byte-compile and load time
1.58      dvdkhlng  762: (eval-and-compile (forth-require 'speedbar))
1.57      dvdkhlng  763: 
                    764: ;; this code is executed at load-time only
1.58      dvdkhlng  765: (when (memq 'speedbar features)
1.57      dvdkhlng  766:   (speedbar-add-supported-extension ".fs")
                    767:   (speedbar-add-supported-extension ".fb"))
1.51      dvdkhlng  768: 
1.48      pazsan    769: ;; (require 'profile)
                    770: ;; (setq profile-functions-list '(forth-set-word-properties forth-next-known-forth-word forth-update-properties forth-delete-properties forth-get-regexp-branch))
                    771: 
                    772: ;;; Indentation
                    773: ;;;
                    774: 
                    775: ;; Return, whether `pos' is the first forth word on its line
                    776: (defun forth-first-word-on-line-p (pos)
                    777:   (save-excursion
                    778:     (beginning-of-line)
                    779:     (skip-chars-forward " \t")
                    780:     (= pos (point))))
                    781: 
                    782: ;; Return indentation data (SELF-INDENT . NEXT-INDENT) of next known 
                    783: ;; indentation word, or nil if there is no word up to `to'. 
                    784: ;; Position `point' at location just after found word, or at `to'. Parsed 
                    785: ;; ranges of text will not be taken into consideration!
                    786: (defun forth-next-known-indent-word (to)
                    787:   (if (<= (point) to)
                    788:       (progn
                    789:        (let* ((regexp (car forth-compiled-indent-words))
                    790:               (pos (re-search-forward regexp to t)))
                    791:          (if pos
1.54      dvdkhlng  792:              (let* ((start (match-beginning 0))
                    793:                     (end (match-end 0))
                    794:                     (branch (forth-get-regexp-branch))
                    795:                     (descr (cdr forth-compiled-indent-words))
                    796:                     (indent (cdr (assoc branch descr)))
                    797:                     (type (nth 2 indent)))
                    798:                ;; skip words that are parsed (strings/comments) and 
                    799:                ;; non-immediate words inside definitions
                    800:                (if (or (text-property-not-all start end 'forth-parsed nil)
                    801:                        (and (eq type 'non-immediate) 
                    802:                             (text-property-not-all start end 
                    803:                                                    'forth-state nil)))
                    804:                    (forth-next-known-indent-word to)
1.48      pazsan    805:                  (if (forth-first-word-on-line-p (match-beginning 0))
                    806:                      (nth 0 indent) (nth 1 indent))))
                    807:            nil)))
                    808:     nil))
                    809:   
                    810: ;; Translate indentation value `indent' to indentation column. Multiples of
                    811: ;; 2 correspond to multiples of `forth-indent-level'. Odd numbers get an
                    812: ;; additional `forth-minor-indent-level' added (or substracted).
                    813: (defun forth-convert-to-column (indent)
                    814:   (let* ((sign (if (< indent 0) -1 1))
                    815:         (value (abs indent))
                    816:         (major (* (/ value 2) forth-indent-level))
                    817:         (minor (* (% value 2) forth-minor-indent-level)))
                    818:     (* sign (+ major minor))))
                    819: 
                    820: ;; Return the column increment, that the current line of forth code does to
                    821: ;; the current or following lines. `which' specifies which indentation values
                    822: ;; to use. 0 means the indentation of following lines relative to current 
                    823: ;; line, 1 means the indentation of the current line relative to the previous 
                    824: ;; line. Return `nil', if there are no indentation words on the current line.
                    825: (defun forth-get-column-incr (which)
                    826:   (save-excursion
                    827:     (let ((regexp (car forth-compiled-indent-words))
                    828:          (word-indent)
                    829:          (self-indent nil)
                    830:          (next-indent nil)
                    831:          (to (save-excursion (end-of-line) (point))))
                    832:       (beginning-of-line)
                    833:       (while (setq word-indent (forth-next-known-indent-word to))
                    834:        (let* ((self-incr (car word-indent))
                    835:               (next-incr (cdr word-indent))
                    836:               (self-column-incr (forth-convert-to-column self-incr))
                    837:               (next-column-incr (forth-convert-to-column next-incr)))
                    838:          (setq next-indent (if next-indent next-indent 0))
                    839:          (setq self-indent (if self-indent self-indent 0))
                    840:          (if (or (and (> next-indent 0) (< self-column-incr 0))
                    841:                  (and (< next-indent 0) (> self-column-incr 0)))
                    842:              (setq next-indent (+ next-indent self-column-incr))
                    843:            (setq self-indent (+ self-indent self-column-incr)))
                    844:          (setq next-indent (+ next-indent next-column-incr))))
                    845:       (nth which (list self-indent next-indent)))))
                    846: 
                    847: ;; Find previous line that contains indentation words, return the column,
                    848: ;; to which following text should be indented to.
                    849: (defun forth-get-anchor-column ()
                    850:   (save-excursion
                    851:     (if (/= 0 (forward-line -1)) 0
1.54      dvdkhlng  852:       (let ((indent))
1.48      pazsan    853:        (while (not (or (setq indent (forth-get-column-incr 1))
                    854:                        (<= (point) (point-min))))
                    855:          (forward-line -1))
                    856:        (+ (current-indentation) (if indent indent 0))))))
                    857: 
                    858: (defun forth-indent-line (&optional flag)
                    859:   "Correct indentation of the current Forth line."
                    860:   (let* ((anchor (forth-get-anchor-column))
                    861:         (column-incr (forth-get-column-incr 0)))
                    862:     (forth-indent-to (if column-incr (+ anchor column-incr) anchor))))
                    863: 
1.49      dvdkhlng  864: (defun forth-current-column ()
                    865:   (- (point) (save-excursion (beginning-of-line) (point))))
                    866: (defun forth-current-indentation ()
                    867:   (- (save-excursion (beginning-of-line) (forward-to-indentation 0) (point))
                    868:      (save-excursion (beginning-of-line) (point))))
                    869: 
1.48      pazsan    870: (defun forth-indent-to (x)
                    871:   (let ((p nil))
1.49      dvdkhlng  872:     (setq p (- (forth-current-column) (forth-current-indentation)))
1.48      pazsan    873:     (forth-delete-indentation)
                    874:     (beginning-of-line)
                    875:     (indent-to x)
                    876:     (if (> p 0) (forward-char p))))
                    877: 
                    878: (defun forth-delete-indentation ()
                    879:   (save-excursion
                    880:     (delete-region 
                    881:      (progn (beginning-of-line) (point)) 
                    882:      (progn (back-to-indentation) (point)))))
                    883: 
                    884: (defun forth-indent-command ()
                    885:   (interactive)
                    886:   (forth-indent-line t))
                    887: 
                    888: ;; remove trailing whitespaces in current line
                    889: (defun forth-remove-trailing ()
                    890:   (save-excursion
                    891:     (end-of-line)
                    892:     (delete-region (point) (progn (skip-chars-backward " \t") (point)))))
                    893: 
                    894: ;; insert newline, removing any trailing whitespaces in the current line
                    895: (defun forth-newline-remove-trailing ()
                    896:   (save-excursion
1.49      dvdkhlng  897:     (delete-region (point) (progn (skip-chars-backward " \t") (point))))
                    898:   (newline))
                    899: ;  (let ((was-point (point-marker)))
                    900: ;    (unwind-protect 
                    901: ;      (progn (forward-line -1) (forth-remove-trailing))
                    902: ;      (goto-char (was-point)))))
1.48      pazsan    903: 
                    904: ;; workaround for bug in `reindent-then-newline-and-indent'
                    905: (defun forth-reindent-then-newline-and-indent ()
                    906:   (interactive "*")
                    907:   (indent-according-to-mode)
                    908:   (forth-newline-remove-trailing)
                    909:   (indent-according-to-mode))
                    910: 
                    911: 
                    912: ;;; Block file encoding/decoding  (dk)
                    913: ;;;
                    914: 
                    915: (defconst forth-c/l 64 "Number of characters per block line")
                    916: (defconst forth-l/b 16 "Number of lines per block")
                    917: 
                    918: ;; Check whether the unconverted block file line, point is in, does not
                    919: ;; contain `\n' and `\t' characters.
                    920: (defun forth-check-block-line (line)
                    921:   (let ((end (save-excursion (beginning-of-line) (forward-char forth-c/l)
                    922:                             (point))))
                    923:     (save-excursion 
                    924:       (beginning-of-line)
                    925:       (when (search-forward "\n" end t)
                    926:        (message "Warning: line %i contains newline character #10" line)
                    927:        (ding t))
                    928:       (beginning-of-line)
                    929:       (when (search-forward "\t" end t)
                    930:        (message "Warning: line %i contains tab character #8" line)
                    931:        (ding t)))))
                    932: 
                    933: (defun forth-convert-from-block (from to)
                    934:   "Convert block file format to stream source in current buffer."
                    935:   (let ((line (count-lines (point-min) from)))
                    936:     (save-excursion
                    937:       (goto-char from)
                    938:       (set-mark to)
                    939:       (while (< (+ (point) forth-c/l) (mark t))
                    940:        (setq line (1+ line))
                    941:        (forth-check-block-line line)
                    942:        (forward-char forth-c/l)
                    943:        (forth-newline-remove-trailing))
                    944:       (when (= (+ (point) forth-c/l) (mark t))
                    945:        (forth-remove-trailing))
                    946:       (mark t))))
                    947: 
                    948: ;; Pad a line of a block file up to `forth-c/l' characters, positioning `point'
                    949: ;; at the end of line.
                    950: (defun forth-pad-block-line ()
                    951:   (save-excursion
                    952:     (end-of-line)
                    953:     (if (<= (current-column) forth-c/l)
                    954:        (move-to-column forth-c/l t)
                    955:       (message "Line %i longer than %i characters, truncated"
                    956:               (count-lines (point-min) (point)) forth-c/l)
                    957:       (ding t)
                    958:       (move-to-column forth-c/l t)
                    959:       (delete-region (point) (progn (end-of-line) (point))))))
                    960: 
                    961: ;; Replace tab characters in current line by spaces.
                    962: (defun forth-convert-tabs-in-line ()
                    963:   (save-excursion
                    964:     (beginning-of-line)
                    965:     (while (search-forward "\t" (save-excursion (end-of-line) (point)) t)
                    966:       (backward-char)
                    967:       (delete-region (point) (1+ (point)))
                    968:       (insert-char ?\  (- tab-width (% (current-column) tab-width))))))
                    969: 
                    970: ;; Delete newline at end of current line, concatenating it with the following
                    971: ;; line. Place `point' at end of newly formed line.
                    972: (defun forth-delete-newline ()
                    973:   (end-of-line)
                    974:   (delete-region (point) (progn (beginning-of-line 2) (point))))
                    975: 
                    976: (defun forth-convert-to-block (from to &optional original-buffer) 
                    977:   "Convert range of text to block file format in current buffer."
                    978:   (let* ((lines 0)) ; I have to count lines myself, since `count-lines' has
                    979:                    ; problems with trailing newlines...
                    980:     (save-excursion
                    981:       (goto-char from)
                    982:       (set-mark to)
                    983:       ;; pad lines to full length (`forth-c/l' characters per line)
                    984:       (while (< (save-excursion (end-of-line) (point)) (mark t))
                    985:        (setq lines (1+ lines))
                    986:        (forth-pad-block-line)
                    987:        (forth-convert-tabs-in-line)
                    988:        (forward-line))
                    989:       ;; also make sure the last line is padded, if `to' is at its end
                    990:       (end-of-line)
                    991:       (when (= (point) (mark t))
                    992:        (setq lines (1+ lines))
                    993:        (forth-pad-block-line)
                    994:        (forth-convert-tabs-in-line))
                    995:       ;; remove newlines between lines
                    996:       (goto-char from)
                    997:       (while (< (save-excursion (end-of-line) (point)) (mark t))
                    998:        (forth-delete-newline))
                    999:       ;; append empty lines, until last block is complete
                   1000:       (goto-char (mark t))
                   1001:       (let* ((required (* (/ (+ lines (1- forth-l/b)) forth-l/b) forth-l/b))
                   1002:             (pad-lines (- required lines)))
                   1003:        (while (> pad-lines 0)
                   1004:          (insert-char ?\  forth-c/l)
                   1005:          (setq pad-lines (1- pad-lines))))
                   1006:       (point))))
                   1007: 
                   1008: (defun forth-detect-block-file-p ()
                   1009:   "Return non-nil if the current buffer is in block file format. Detection is
                   1010: done by checking whether the first line has 1024 characters or more."
                   1011:   (save-restriction 
                   1012:     (widen)
                   1013:     (save-excursion
1.54      dvdkhlng 1014:        (goto-char (point-min))
1.48      pazsan   1015:        (end-of-line)
                   1016:        (>= (current-column) 1024))))
                   1017: 
                   1018: ;; add block file conversion routines to `format-alist'
                   1019: (defconst forth-block-format-description
                   1020:   '(forth-blocks "Forth block source file" nil 
                   1021:                 forth-convert-from-block forth-convert-to-block 
                   1022:                 t normal-mode))
                   1023: (unless (memq forth-block-format-description format-alist)
                   1024:   (setq format-alist (cons forth-block-format-description format-alist)))
                   1025: 
                   1026: ;;; End block file encoding/decoding
                   1027: 
                   1028: ;;; Block file editing
                   1029: ;;;
                   1030: (defvar forth-overlay-arrow-string ">>")
                   1031: (defvar forth-block-base 1 "Number of first block in block file")
                   1032: (defvar forth-show-screen nil
                   1033:   "Non-nil means to show screen starts and numbers (for block files)")
                   1034: (defvar forth-warn-long-lines nil
                   1035:   "Non-nil means to warn about lines that are longer than 64 characters")
                   1036: 
                   1037: (defvar forth-screen-marker nil)
1.57      dvdkhlng 1038: (defvar forth-screen-number-string nil)
1.48      pazsan   1039: 
                   1040: (defun forth-update-show-screen ()
                   1041:   "If `forth-show-screen' is non-nil, put overlay arrow to start of screen, 
                   1042: `point' is in. If arrow now points to different screen than before, display 
                   1043: screen number."
                   1044:   (if (not forth-show-screen)
                   1045:       (setq overlay-arrow-string nil)
                   1046:     (save-excursion
                   1047:       (let* ((line (count-lines (point-min) (min (point-max) (1+ (point)))))
                   1048:             (first-line (1+ (* (/ (1- line) forth-l/b) forth-l/b)))
                   1049:             (scr (+ forth-block-base (/ first-line forth-l/b))))
                   1050:        (setq overlay-arrow-string forth-overlay-arrow-string)
                   1051:        (goto-line first-line)
                   1052:        (setq overlay-arrow-position forth-screen-marker)
1.50      dvdkhlng 1053:        (set-marker forth-screen-marker 
                   1054:                    (save-excursion (goto-line first-line) (point)))
                   1055:        (setq forth-screen-number-string (format "%d" scr))))))
1.48      pazsan   1056: 
                   1057: (add-hook 'forth-motion-hooks 'forth-update-show-screen)
                   1058: 
                   1059: (defun forth-update-warn-long-lines ()
                   1060:   "If `forth-warn-long-lines' is non-nil, display a warning whenever a line
                   1061: exceeds 64 characters."
                   1062:   (when forth-warn-long-lines
                   1063:     (when (> (save-excursion (end-of-line) (current-column)) forth-c/l)
                   1064:       (message "Warning: current line exceeds %i characters"
                   1065:               forth-c/l))))
                   1066: 
                   1067: (add-hook 'forth-motion-hooks 'forth-update-warn-long-lines)
1.55      dvdkhlng 1068: 
1.48      pazsan   1069: ;;; End block file editing
1.1       anton    1070: 
1.6       anton    1071: 
1.1       anton    1072: (defvar forth-mode-abbrev-table nil
                   1073:   "Abbrev table in use in Forth-mode buffers.")
                   1074: 
                   1075: (define-abbrev-table 'forth-mode-abbrev-table ())
                   1076: 
                   1077: (defvar forth-mode-map nil
                   1078:   "Keymap used in Forth mode.")
                   1079: 
                   1080: (if (not forth-mode-map)
                   1081:     (setq forth-mode-map (make-sparse-keymap)))
                   1082: 
1.9       anton    1083: ;(define-key forth-mode-map "\M-\C-x" 'compile)
1.7       anton    1084: (define-key forth-mode-map "\C-x\\" 'comment-region)
                   1085: (define-key forth-mode-map "\C-x~" 'forth-remove-tracers)
1.1       anton    1086: (define-key forth-mode-map "\e\C-m" 'forth-send-paragraph)
                   1087: (define-key forth-mode-map "\eo" 'forth-send-buffer)
                   1088: (define-key forth-mode-map "\C-x\C-m" 'forth-split)
                   1089: (define-key forth-mode-map "\e " 'forth-reload)
                   1090: (define-key forth-mode-map "\t" 'forth-indent-command)
1.48      pazsan   1091: (define-key forth-mode-map "\C-m" 'forth-reindent-then-newline-and-indent)
1.7       anton    1092: (define-key forth-mode-map "\M-q" 'forth-fill-paragraph)
1.13      pazsan   1093: (define-key forth-mode-map "\e." 'forth-find-tag)
1.1       anton    1094: 
1.61      dvdkhlng 1095: ;; setup for C-h C-i to work
1.58      dvdkhlng 1096: (eval-and-compile (forth-require 'info-look))
                   1097: (when (memq 'info-look features)
1.61      dvdkhlng 1098:   (defvar forth-info-lookup '(symbol (forth-mode "\\S-+" t 
1.59      dvdkhlng 1099:                                                  (("(gforth)Word Index"))
1.61      dvdkhlng 1100:                                                  "\\S-+")))
1.59      dvdkhlng 1101:   (unless (memq forth-info-lookup info-lookup-alist)
1.61      dvdkhlng 1102:     (setq info-lookup-alist (cons forth-info-lookup info-lookup-alist)))
                   1103:   ;; in X-Emacs C-h C-i is by default bound to Info-query
                   1104:   (define-key forth-mode-map "\C-h\C-i" 'info-lookup-symbol))
                   1105: 
1.59      dvdkhlng 1106: 
                   1107: ;;   (info-lookup-add-help
                   1108: ;;    :topic 'symbol
                   1109: ;;    :mode 'forth-mode
                   1110: ;;    :regexp "[^      
                   1111: ;; ]+"
                   1112: ;;    :ignore-case t
                   1113: ;;    :doc-spec '(("(gforth)Name Index" nil "`" "'  "))))
1.35      anton    1114: 
1.57      dvdkhlng 1115: (require 'etags)
1.13      pazsan   1116: 
                   1117: (defun forth-find-tag (tagname &optional next-p regexp-p)
                   1118:   (interactive (find-tag-interactive "Find tag: "))
1.53      dvdkhlng 1119:   (unless (or regexp-p next-p)
                   1120:     (setq tagname (concat "\\(^\\|\\s-\\)\\(" (regexp-quote tagname) 
                   1121:                            "\\)\\(\\s-\\|$\\)")))
1.13      pazsan   1122:   (switch-to-buffer
1.53      dvdkhlng 1123:    (find-tag-noselect tagname next-p t)))
1.13      pazsan   1124: 
1.1       anton    1125: (defvar forth-mode-syntax-table nil
                   1126:   "Syntax table in use in Forth-mode buffers.")
                   1127: 
1.48      pazsan   1128: ;; Important: hilighting/indentation now depends on a correct syntax table.
                   1129: ;; All characters, except whitespace *must* belong to the "word constituent"
                   1130: ;; syntax class. If different behaviour is required, use of Categories might
                   1131: ;; help.
                   1132: (if (not forth-mode-syntax-table)
1.1       anton    1133:     (progn
                   1134:       (setq forth-mode-syntax-table (make-syntax-table))
1.6       anton    1135:       (let ((char 0))
                   1136:        (while (< char ?!)
                   1137:          (modify-syntax-entry char " " forth-mode-syntax-table)
                   1138:          (setq char (1+ char)))
                   1139:        (while (< char 256)
                   1140:          (modify-syntax-entry char "w" forth-mode-syntax-table)
                   1141:          (setq char (1+ char))))
                   1142:       ))
1.1       anton    1143: 
                   1144: (defun forth-mode-variables ()
                   1145:   (set-syntax-table forth-mode-syntax-table)
                   1146:   (setq local-abbrev-table forth-mode-abbrev-table)
                   1147:   (make-local-variable 'paragraph-start)
                   1148:   (setq paragraph-start (concat "^$\\|" page-delimiter))
                   1149:   (make-local-variable 'paragraph-separate)
                   1150:   (setq paragraph-separate paragraph-start)
                   1151:   (make-local-variable 'indent-line-function)
                   1152:   (setq indent-line-function 'forth-indent-line)
1.6       anton    1153: ;  (make-local-variable 'require-final-newline)
                   1154: ;  (setq require-final-newline t)
1.1       anton    1155:   (make-local-variable 'comment-start)
1.3       anton    1156:   (setq comment-start "\\ ")
                   1157:   ;(make-local-variable 'comment-end)
                   1158:   ;(setq comment-end " )")
1.1       anton    1159:   (make-local-variable 'comment-column)
                   1160:   (setq comment-column 40)
                   1161:   (make-local-variable 'comment-start-skip)
1.3       anton    1162:   (setq comment-start-skip "\\ ")
1.57      dvdkhlng 1163:   (make-local-variable 'comment-indent-function)
                   1164:   (setq comment-indent-function 'forth-comment-indent)
1.1       anton    1165:   (make-local-variable 'parse-sexp-ignore-comments)
1.47      pazsan   1166:   (setq parse-sexp-ignore-comments t)
1.48      pazsan   1167:   (setq case-fold-search t)
1.55      dvdkhlng 1168:   (make-local-variable 'forth-was-point)
                   1169:   (setq forth-was-point -1)
1.48      pazsan   1170:   (make-local-variable 'forth-words)
                   1171:   (make-local-variable 'forth-compiled-words)
                   1172:   (make-local-variable 'forth-compiled-indent-words)
                   1173:   (make-local-variable 'forth-hilight-level)
                   1174:   (make-local-variable 'after-change-functions)
                   1175:   (make-local-variable 'forth-show-screen)
                   1176:   (make-local-variable 'forth-screen-marker)
                   1177:   (make-local-variable 'forth-warn-long-lines)
1.50      dvdkhlng 1178:   (make-local-variable 'forth-screen-number-string)
1.51      dvdkhlng 1179:   (make-local-variable 'forth-use-oof)
                   1180:   (make-local-variable 'forth-use-objects) 
1.48      pazsan   1181:   (setq forth-screen-marker (copy-marker 0))
1.51      dvdkhlng 1182:   (add-hook 'after-change-functions 'forth-change-function)
1.62    ! dvdkhlng 1183:   (if (and forth-jit-parser (>= emacs-major-version 21))
1.55      dvdkhlng 1184:       (add-hook 'fontification-functions 'forth-fontification-function))
1.51      dvdkhlng 1185:   (setq imenu-create-index-function 'forth-create-index))
1.47      pazsan   1186: 
1.2       anton    1187: ;;;###autoload
1.1       anton    1188: (defun forth-mode ()
                   1189:   "
                   1190: Major mode for editing Forth code. Tab indents for Forth code. Comments
1.9       anton    1191: are delimited with \\ and newline. Paragraphs are separated by blank lines
1.49      dvdkhlng 1192: only. Block files are autodetected, when read, and converted to normal 
                   1193: stream source format. See also `forth-block-mode'.
1.1       anton    1194: \\{forth-mode-map}
                   1195:  Forth-split
                   1196:     Positions the current buffer on top and a forth-interaction window
                   1197:     below. The window size is controlled by the forth-percent-height
                   1198:     variable (see below).
                   1199:  Forth-reload
                   1200:     Reloads the forth library and restarts the forth process.
                   1201:  Forth-send-buffer
                   1202:     Sends the current buffer, in text representation, as input to the
                   1203:     forth process.
                   1204:  Forth-send-paragraph
                   1205:     Sends the previous or the current paragraph to the forth-process.
                   1206:     Note that the cursor only need to be with in the paragraph to be sent.
1.48      pazsan   1207:  forth-documentation
1.1       anton    1208:     Search for documentation of forward adjacent to cursor. Note! To use
                   1209:     this mode you have to add a line, to your .emacs file, defining the
                   1210:     directories to search through for documentation files (se variable
                   1211:     forth-help-load-path below) e.g. (setq forth-help-load-path '(nil)).
                   1212: 
                   1213: Variables controlling interaction and startup
                   1214:  forth-percent-height
                   1215:     Tells split how high to make the edit portion, in percent of the
                   1216:     current screen height.
                   1217:  forth-program-name
                   1218:     Tells the library which program name to execute in the interation
                   1219:     window.
                   1220: 
1.48      pazsan   1221: Variables controlling syntax hilighting/recognition of parsed text:
                   1222:  `forth-words'
                   1223:     List of words that have a special parsing behaviour and/or should be
1.51      dvdkhlng 1224:     hilighted. Add custom words by setting forth-custom-words in your
                   1225:     .emacs, or by setting forth-local-words, in source-files' local 
                   1226:     variables lists.
                   1227:  forth-use-objects
1.55      dvdkhlng 1228:     Set this variable to non-nil in your .emacs, or in a local variables 
1.51      dvdkhlng 1229:     list, to hilight and recognize the words from the \"Objects\" package 
                   1230:     for object-oriented programming.
                   1231:  forth-use-oof
                   1232:     Same as above, just for the \"OOF\" package.
                   1233:  forth-custom-words
                   1234:     List of custom Forth words to prepend to `forth-words'. Should be set
                   1235:     in your .emacs.
1.49      dvdkhlng 1236:  forth-local-words
                   1237:     List of words to prepend to `forth-words', whenever a forth-mode
                   1238:     buffer is created. That variable should be set by Forth sources, using
                   1239:     a local variables list at the end of file, to get file-specific
                   1240:     hilighting.
                   1241:     0 [IF]
                   1242:        Local Variables: ... 
                   1243:        forth-local-words: ...
                   1244:        End:
                   1245:     [THEN]
1.48      pazsan   1246:  forth-hilight-level
                   1247:     Controls how much syntax hilighting is done. Should be in the range 
1.51      dvdkhlng 1248:     0..3
1.48      pazsan   1249: 
1.1       anton    1250: Variables controlling indentation style:
1.48      pazsan   1251:  `forth-indent-words'
                   1252:     List of words that influence indentation.
1.51      dvdkhlng 1253:  forth-local-indent-words
1.49      dvdkhlng 1254:     List of words to prepend to `forth-indent-words', similar to 
1.51      dvdkhlng 1255:     forth-local-words. Should be used for specifying file-specific 
1.49      dvdkhlng 1256:     indentation, using a local variables list.
1.51      dvdkhlng 1257:  forth-custom-indent-words
                   1258:     List of words to prepend to `forth-indent-words'. Should be set in your
                   1259:     .emacs.    
1.1       anton    1260:  forth-indent-level
                   1261:     Indentation increment/decrement of Forth statements.
1.48      pazsan   1262:  forth-minor-indent-level
                   1263:     Minor indentation increment/decrement of Forth statemens.
1.1       anton    1264: 
1.48      pazsan   1265: Variables controlling block-file editing:
1.51      dvdkhlng 1266:  forth-show-screen
1.48      pazsan   1267:     Non-nil means, that the start of the current screen is marked by an
1.50      dvdkhlng 1268:     overlay arrow, and screen numbers are displayed in the mode line.
                   1269:     This variable is by default nil for `forth-mode' and t for 
                   1270:     `forth-block-mode'.
1.51      dvdkhlng 1271:  forth-overlay-arrow-string
1.48      pazsan   1272:     String to display as the overlay arrow, when `forth-show-screen' is t.
                   1273:     Setting this variable to nil disables the overlay arrow.
1.51      dvdkhlng 1274:  forth-block-base
1.48      pazsan   1275:     Screen number of the first block in a block file. Defaults to 1.
1.51      dvdkhlng 1276:  forth-warn-long-lines
1.48      pazsan   1277:     Non-nil means that a warning message is displayed whenever you edit or
                   1278:     move over a line that is longer than 64 characters (the maximum line
                   1279:     length that can be stored into a block file). This variable defaults to
                   1280:     t for `forth-block-mode' and to nil for `forth-mode'.
1.1       anton    1281: 
                   1282: Variables controling documentation search
                   1283:  forth-help-load-path
                   1284:     List of directories to search through to find *.doc
                   1285:     (forth-help-file-suffix) files. Nil means current default directory.
                   1286:     The specified directories must contain at least one .doc file. If it
                   1287:     does not and you still want the load-path to scan that directory, create
                   1288:     an empty file dummy.doc.
                   1289:  forth-help-file-suffix
                   1290:     The file names to search for in each directory specified by
                   1291:     forth-help-load-path. Defaulted to '*.doc'. 
                   1292: "
                   1293:   (interactive)
                   1294:   (kill-all-local-variables)
                   1295:   (use-local-map forth-mode-map)
                   1296:   (setq mode-name "Forth")
                   1297:   (setq major-mode 'forth-mode)
1.62    ! dvdkhlng 1298:   (forth-install-motion-hook)
1.48      pazsan   1299:   ;; convert buffer contents from block file format, if necessary
                   1300:   (when (forth-detect-block-file-p)
                   1301:     (widen)
                   1302:     (message "Converting from Forth block source...")
                   1303:     (forth-convert-from-block (point-min) (point-max))
                   1304:     (message "Converting from Forth block source...done"))
                   1305:   ;; if user switched from forth-block-mode to forth-mode, make sure the file
                   1306:   ;; is now stored as normal strem source
                   1307:   (when (equal buffer-file-format '(forth-blocks))
                   1308:     (setq buffer-file-format nil))
1.1       anton    1309:   (forth-mode-variables)
                   1310: ;  (if (not (forth-process-running-p))
                   1311: ;      (run-forth forth-program-name))
1.49      dvdkhlng 1312:   (run-hooks 'forth-mode-hook))
1.48      pazsan   1313: 
1.50      dvdkhlng 1314: ;;;###autoload
1.48      pazsan   1315: (define-derived-mode forth-block-mode forth-mode "Forth Block Source" 
                   1316:   "Major mode for editing Forth block source files, derived from 
                   1317: `forth-mode'. Differences to `forth-mode' are:
                   1318:  * files are converted to block format, when written (`buffer-file-format' 
                   1319:    is set to `(forth-blocks)')
                   1320:  * `forth-show-screen' and `forth-warn-long-lines' are t by default
                   1321:   
                   1322: Note that the length of lines in block files is limited to 64 characters.
                   1323: When writing longer lines to a block file, a warning is displayed in the
                   1324: echo area and the line is truncated. 
                   1325: 
                   1326: Another problem is imposed by block files that contain newline or tab 
                   1327: characters. When Emacs converts such files back to block file format, 
1.50      dvdkhlng 1328: it'll translate those characters to a number of spaces. However, when
1.48      pazsan   1329: you read such a file, a warning message is displayed in the echo area,
                   1330: including a line number that may help you to locate and fix the problem.
                   1331: 
                   1332: So have a look at the *Messages* buffer, whenever you hear (or see) Emacs' 
                   1333: bell during block file read/write operations."
                   1334:   (setq buffer-file-format '(forth-blocks))
                   1335:   (setq forth-show-screen t)
1.50      dvdkhlng 1336:   (setq forth-warn-long-lines t)
                   1337:   (setq forth-screen-number-string (format "%d" forth-block-base))
                   1338:   (setq mode-line-format (append (reverse (cdr (reverse mode-line-format)))
                   1339:                                 '("--S" forth-screen-number-string "-%-"))))
1.1       anton    1340: 
1.44      anton    1341: (add-hook 'forth-mode-hook
1.9       anton    1342:       '(lambda () 
                   1343:         (make-local-variable 'compile-command)
1.49      dvdkhlng 1344:         (setq compile-command "gforth ")
                   1345:         (forth-hack-local-variables)
1.51      dvdkhlng 1346:         (forth-customize-words)
1.49      dvdkhlng 1347:         (forth-compile-words)
1.55      dvdkhlng 1348:         (unless (and forth-jit-parser (>= emacs-major-version 21))
                   1349:           (forth-change-function (point-min) (point-max) nil t))))
1.6       anton    1350: 
1.7       anton    1351: (defun forth-fill-paragraph () 
                   1352:   "Fill comments (starting with '\'; do not fill code (block style
                   1353: programmers who tend to fill code won't use emacs anyway:-)."
1.9       anton    1354:   ; Currently only comments at the start of the line are filled.
                   1355:   ; Something like lisp-fill-paragraph may be better.  We cannot use
                   1356:   ; fill-paragraph, because it removes the \ from the first comment
                   1357:   ; line. Therefore we have to look for the first line of the comment
                   1358:   ; and use fill-region.
1.7       anton    1359:   (interactive)
                   1360:   (save-excursion
                   1361:     (beginning-of-line)
1.9       anton    1362:     (while (and
                   1363:             (= (forward-line -1) 0)
1.14      anton    1364:             (looking-at "[ \t]*\\\\g?[ \t]+")))
                   1365:     (if (not (looking-at "[ \t]*\\\\g?[ \t]+"))
1.9       anton    1366:        (forward-line 1))
                   1367:     (let ((from (point))
                   1368:          (to (save-excursion (forward-paragraph) (point))))
1.14      anton    1369:       (if (looking-at "[ \t]*\\\\g?[ \t]+")
1.9       anton    1370:          (progn (goto-char (match-end 0))
                   1371:                 (set-fill-prefix)
                   1372:                 (fill-region from to nil))))))
1.7       anton    1373: 
1.1       anton    1374: (defun forth-comment-indent ()
                   1375:   (save-excursion
                   1376:     (beginning-of-line)
                   1377:     (if (looking-at ":[ \t]*")
                   1378:        (progn
                   1379:          (end-of-line)
                   1380:          (skip-chars-backward " \t\n")
                   1381:          (1+ (current-column)))
                   1382:       comment-column)))
                   1383: 
                   1384: 
                   1385: ;; Forth commands
                   1386: 
1.7       anton    1387: (defun forth-remove-tracers ()
                   1388:   "Remove tracers of the form `~~ '. Queries the user for each occurrence."
                   1389:   (interactive)
1.16      anton    1390:   (query-replace-regexp "\\(~~ \\| ~~$\\)" "" nil))
1.7       anton    1391: 
1.5       anton    1392: (defvar forth-program-name "gforth"
1.1       anton    1393:   "*Program invoked by the `run-forth' command.")
                   1394: 
                   1395: (defvar forth-band-name nil
                   1396:   "*Band loaded by the `run-forth' command.")
                   1397: 
                   1398: (defvar forth-program-arguments nil
                   1399:   "*Arguments passed to the Forth program by the `run-forth' command.")
                   1400: 
                   1401: (defun run-forth (command-line)
                   1402:   "Run an inferior Forth process. Output goes to the buffer `*forth*'.
                   1403: With argument, asks for a command line. Split up screen and run forth 
                   1404: in the lower portion. The current-buffer when called will stay in the
                   1405: upper portion of the screen, and all other windows are deleted.
                   1406: Call run-forth again to make the *forth* buffer appear in the lower
                   1407: part of the screen."
                   1408:   (interactive
                   1409:    (list (let ((default
                   1410:                 (or forth-process-command-line
                   1411:                     (forth-default-command-line))))
                   1412:           (if current-prefix-arg
                   1413:               (read-string "Run Forth: " default)
                   1414:               default))))
                   1415:   (setq forth-process-command-line command-line)
                   1416:   (forth-start-process command-line)
                   1417:   (forth-split)
                   1418:   (forth-set-runlight forth-runlight:input))
                   1419: 
1.28      anton    1420: (defun run-forth-if-not ()
                   1421:   (if (not (forth-process-running-p))
                   1422:       (run-forth forth-program-name)))
                   1423: 
1.1       anton    1424: (defun reset-forth ()
                   1425:   "Reset the Forth process."
                   1426:   (interactive)
                   1427:   (let ((process (get-process forth-program-name)))
                   1428:     (cond ((or (not process)
                   1429:               (not (eq (process-status process) 'run))
                   1430:               (yes-or-no-p
                   1431: "The Forth process is running, are you SURE you want to reset it? "))
                   1432:           (message "Resetting Forth process...")
                   1433:           (forth-reload)
                   1434:           (message "Resetting Forth process...done")))))
                   1435: 
                   1436: (defun forth-default-command-line ()
1.13      pazsan   1437:   (concat forth-program-name
1.1       anton    1438:          (if forth-program-arguments
                   1439:              (concat " " forth-program-arguments)
                   1440:              "")))
                   1441: 
                   1442: ;;;; Internal Variables
                   1443: 
                   1444: (defvar forth-process-command-line nil
                   1445:   "Command used to start the most recent Forth process.")
                   1446: 
                   1447: (defvar forth-previous-send ""
                   1448:   "Most recent expression transmitted to the Forth process.")
                   1449: 
                   1450: (defvar forth-process-filter-queue '()
                   1451:   "Queue used to synchronize filter actions properly.")
                   1452: 
                   1453: (defvar forth-prompt "ok"
                   1454:   "The current forth prompt string.")
                   1455: 
                   1456: (defvar forth-start-hook nil
                   1457:   "If non-nil, a procedure to call when the Forth process is started.
                   1458: When called, the current buffer will be the Forth process-buffer.")
                   1459: 
                   1460: (defvar forth-signal-death-message nil
                   1461:   "If non-nil, causes a message to be generated when the Forth process dies.")
                   1462: 
1.9       anton    1463: (defvar forth-percent-height 50
1.1       anton    1464:   "Tells run-forth how high the upper window should be in percent.")
                   1465: 
                   1466: (defconst forth-runlight:input ?I
                   1467:   "The character displayed when the Forth process is waiting for input.")
                   1468: 
                   1469: (defvar forth-mode-string ""
                   1470:   "String displayed in the mode line when the Forth process is running.")
                   1471: 
                   1472: ;;;; Evaluation Commands
                   1473: 
                   1474: (defun forth-send-string (&rest strings)
                   1475:   "Send the string arguments to the Forth process.
                   1476: The strings are concatenated and terminated by a newline."
                   1477:   (cond ((forth-process-running-p)
                   1478:         (forth-send-string-1 strings))
                   1479:        ((yes-or-no-p "The Forth process has died.  Reset it? ")
                   1480:         (reset-forth)
                   1481:         (goto-char (point-max))
                   1482:         (forth-send-string-1 strings))))
                   1483: 
                   1484: (defun forth-send-string-1 (strings)
                   1485:   (let ((string (apply 'concat strings)))
                   1486:     (forth-send-string-2 string)))
                   1487: 
                   1488: (defun forth-send-string-2 (string)
                   1489:   (let ((process (get-process forth-program-name)))
                   1490:     (if (not (eq (current-buffer) (get-buffer forth-program-name)))
                   1491:        (progn
                   1492:         (forth-process-filter-output string)
                   1493:         (forth-process-filter:finish)))
                   1494:     (send-string process (concat string "\n"))
                   1495:     (if (eq (current-buffer) (process-buffer process))
                   1496:        (set-marker (process-mark process) (point)))))
                   1497: 
                   1498: 
                   1499: (defun forth-send-region (start end)
                   1500:   "Send the current region to the Forth process.
                   1501: The region is sent terminated by a newline."
                   1502:   (interactive "r")
                   1503:   (let ((process (get-process forth-program-name)))
                   1504:     (if (and process (eq (current-buffer) (process-buffer process)))
                   1505:        (progn (goto-char end)
                   1506:               (set-marker (process-mark process) end))))
                   1507:   (forth-send-string "\n" (buffer-substring start end) "\n"))
                   1508: 
                   1509: (defun forth-end-of-paragraph ()
                   1510:   (if (looking-at "[\t\n ]+") (skip-chars-backward  "\t\n "))
                   1511:   (if (not (re-search-forward "\n[ \t]*\n" nil t))
                   1512:       (goto-char (point-max))))
                   1513: 
                   1514: (defun forth-send-paragraph ()
                   1515:   "Send the current or the previous paragraph to the Forth process"
                   1516:   (interactive)
                   1517:   (let (end)
                   1518:     (save-excursion
                   1519:       (forth-end-of-paragraph)
                   1520:       (skip-chars-backward  "\t\n ")
                   1521:       (setq end (point))
                   1522:       (if (re-search-backward "\n[ \t]*\n" nil t)
                   1523:          (setq start (point))
                   1524:        (goto-char (point-min)))
                   1525:       (skip-chars-forward  "\t\n ")
                   1526:       (forth-send-region (point) end))))
                   1527:   
                   1528: (defun forth-send-buffer ()
                   1529:   "Send the current buffer to the Forth process."
                   1530:   (interactive)
                   1531:   (if (eq (current-buffer) (forth-process-buffer))
                   1532:       (error "Not allowed to send this buffer's contents to Forth"))
                   1533:   (forth-send-region (point-min) (point-max)))
                   1534: 
                   1535: 
                   1536: ;;;; Basic Process Control
                   1537: 
                   1538: (defun forth-start-process (command-line)
                   1539:   (let ((buffer (get-buffer-create "*forth*")))
                   1540:     (let ((process (get-buffer-process buffer)))
                   1541:       (save-excursion
                   1542:        (set-buffer buffer)
                   1543:        (progn (if process (delete-process process))
                   1544:               (goto-char (point-max))
                   1545:               (setq mode-line-process '(": %s"))
                   1546:               (add-to-global-mode-string 'forth-mode-string)
                   1547:               (setq process
                   1548:                     (apply 'start-process
                   1549:                            (cons forth-program-name
                   1550:                                  (cons buffer
                   1551:                                        (forth-parse-command-line
                   1552:                                         command-line)))))
                   1553:               (set-marker (process-mark process) (point-max))
                   1554:               (forth-process-filter-initialize t)
                   1555:               (forth-modeline-initialize)
                   1556:               (set-process-sentinel process 'forth-process-sentinel)
                   1557:               (set-process-filter process 'forth-process-filter)
                   1558:               (run-hooks 'forth-start-hook)))
                   1559:     buffer)))
                   1560: 
                   1561: (defun forth-parse-command-line (string)
                   1562:   (setq string (substitute-in-file-name string))
                   1563:   (let ((start 0)
                   1564:        (result '()))
                   1565:     (while start
                   1566:       (let ((index (string-match "[ \t]" string start)))
                   1567:        (setq start
                   1568:              (cond ((not index)
                   1569:                     (setq result
                   1570:                           (cons (substring string start)
                   1571:                                 result))
                   1572:                     nil)
                   1573:                    ((= index start)
                   1574:                     (string-match "[^ \t]" string start))
                   1575:                    (t
                   1576:                     (setq result
                   1577:                           (cons (substring string start index)
                   1578:                                 result))
                   1579:                     (1+ index))))))
                   1580:     (nreverse result)))
                   1581: 
                   1582: 
                   1583: (defun forth-process-running-p ()
                   1584:   "True iff there is a Forth process whose status is `run'."
                   1585:   (let ((process (get-process forth-program-name)))
                   1586:     (and process
                   1587:         (eq (process-status process) 'run))))
                   1588: 
                   1589: (defun forth-process-buffer ()
                   1590:   (let ((process (get-process forth-program-name)))
                   1591:     (and process (process-buffer process))))
                   1592: 
                   1593: ;;;; Process Filter
                   1594: 
                   1595: (defun forth-process-sentinel (proc reason)
                   1596:   (let ((inhibit-quit nil))
                   1597:     (forth-process-filter-initialize (eq reason 'run))
                   1598:     (if (eq reason 'run)
                   1599:        (forth-modeline-initialize)
                   1600:        (setq forth-mode-string "")))
                   1601:   (if (and (not (memq reason '(run stop)))
                   1602:           forth-signal-death-message)
                   1603:       (progn (beep)
                   1604:             (message
                   1605: "The Forth process has died!  Do M-x reset-forth to restart it"))))
                   1606: 
                   1607: (defun forth-process-filter-initialize (running-p)
                   1608:   (setq forth-process-filter-queue (cons '() '()))
                   1609:   (setq forth-prompt "ok"))
                   1610: 
                   1611: 
                   1612: (defun forth-process-filter (proc string)
                   1613:   (forth-process-filter-output string)
                   1614:   (forth-process-filter:finish))
                   1615: 
                   1616: (defun forth-process-filter:enqueue (action)
                   1617:   (let ((next (cons action '())))
                   1618:     (if (cdr forth-process-filter-queue)
                   1619:        (setcdr (cdr forth-process-filter-queue) next)
                   1620:        (setcar forth-process-filter-queue next))
                   1621:     (setcdr forth-process-filter-queue next)))
                   1622: 
                   1623: (defun forth-process-filter:finish ()
                   1624:   (while (car forth-process-filter-queue)
                   1625:     (let ((next (car forth-process-filter-queue)))
                   1626:       (setcar forth-process-filter-queue (cdr next))
                   1627:       (if (not (cdr next))
                   1628:          (setcdr forth-process-filter-queue '()))
                   1629:       (apply (car (car next)) (cdr (car next))))))
                   1630: 
                   1631: ;;;; Process Filter Output
                   1632: 
                   1633: (defun forth-process-filter-output (&rest args)
                   1634:   (if (not (and args
                   1635:                (null (cdr args))
                   1636:                (stringp (car args))
                   1637:                (string-equal "" (car args))))
                   1638:       (forth-process-filter:enqueue
                   1639:        (cons 'forth-process-filter-output-1 args))))
                   1640: 
                   1641: (defun forth-process-filter-output-1 (&rest args)
                   1642:   (save-excursion
                   1643:     (forth-goto-output-point)
                   1644:     (apply 'insert-before-markers args)))
                   1645: 
                   1646: (defun forth-guarantee-newlines (n)
                   1647:   (save-excursion
                   1648:     (forth-goto-output-point)
                   1649:     (let ((stop nil))
                   1650:       (while (and (not stop)
                   1651:                  (bolp))
                   1652:        (setq n (1- n))
                   1653:        (if (bobp)
                   1654:            (setq stop t)
                   1655:          (backward-char))))
                   1656:     (forth-goto-output-point)
                   1657:     (while (> n 0)
                   1658:       (insert-before-markers ?\n)
                   1659:       (setq n (1- n)))))
                   1660: 
                   1661: (defun forth-goto-output-point ()
                   1662:   (let ((process (get-process forth-program-name)))
                   1663:     (set-buffer (process-buffer process))
                   1664:     (goto-char (process-mark process))))
                   1665: 
                   1666: (defun forth-modeline-initialize ()
                   1667:   (setq forth-mode-string "  "))
                   1668: 
                   1669: (defun forth-set-runlight (runlight)
                   1670:   (aset forth-mode-string 0 runlight)
                   1671:   (forth-modeline-redisplay))
                   1672: 
                   1673: (defun forth-modeline-redisplay ()
                   1674:   (save-excursion (set-buffer (other-buffer)))
                   1675:   (set-buffer-modified-p (buffer-modified-p))
                   1676:   (sit-for 0))
                   1677: 
                   1678: ;;;; Process Filter Operations
                   1679: 
                   1680: (defun add-to-global-mode-string (x)
                   1681:   (cond ((null global-mode-string)
                   1682:         (setq global-mode-string (list "" x " ")))
                   1683:        ((not (memq x global-mode-string))
                   1684:         (setq global-mode-string
                   1685:               (cons ""
                   1686:                     (cons x
                   1687:                           (cons " "
                   1688:                                 (if (equal "" (car global-mode-string))
                   1689:                                     (cdr global-mode-string)
                   1690:                                     global-mode-string))))))))
                   1691: 
                   1692: 
                   1693: ;; Misc
                   1694: 
                   1695: (setq auto-mode-alist (append auto-mode-alist
1.4       pazsan   1696:                                '(("\\.fs$" . forth-mode))))
1.1       anton    1697: 
                   1698: (defun forth-split ()
                   1699:   (interactive)
                   1700:   (forth-split-1 "*forth*"))
                   1701: 
                   1702: (defun forth-split-1 (buffer)
                   1703:   (if (not (eq (window-buffer) (get-buffer buffer)))
                   1704:       (progn
                   1705:        (delete-other-windows)
                   1706:        (split-window-vertically
                   1707:         (/ (* (screen-height) forth-percent-height) 100))
                   1708:        (other-window 1)
                   1709:        (switch-to-buffer buffer)
                   1710:        (goto-char (point-max))
                   1711:        (other-window 1))))
                   1712:     
                   1713: (defun forth-reload ()
                   1714:   (interactive)
                   1715:   (let ((process (get-process forth-program-name)))
                   1716:     (if process (kill-process process t)))
1.28      anton    1717:   (sleep-for 0 100)
1.1       anton    1718:   (forth-mode))
                   1719: 
                   1720: 
                   1721: ;; Special section for forth-help
                   1722: 
                   1723: (defvar forth-help-buffer "*Forth-help*"
                   1724:   "Buffer used to display the requested documentation.")
                   1725: 
                   1726: (defvar forth-help-load-path nil
                   1727:   "List of directories to search through to find *.doc
                   1728:  (forth-help-file-suffix) files. Nil means current default directory.
                   1729:  The specified directories must contain at least one .doc file. If it
                   1730:  does not and you still want the load-path to scan that directory, create
                   1731:  an empty file dummy.doc.")
                   1732: 
                   1733: (defvar forth-help-file-suffix "*.doc"
                   1734:   "The file names to search for in each directory.")
                   1735: 
                   1736: (setq forth-search-command-prefix "grep -n \"^    [^(]* ")
                   1737: (defvar forth-search-command-suffix "/dev/null")
                   1738: (defvar forth-grep-error-regexp ": No such file or directory")
                   1739: 
                   1740: (defun forth-function-called-at-point ()
                   1741:   "Return the space delimited word a point."
                   1742:   (save-excursion
                   1743:     (save-restriction
                   1744:       (narrow-to-region (max (point-min) (- (point) 1000)) (point-max))
                   1745:       (skip-chars-backward "^ \t\n" (point-min))
                   1746:       (if (looking-at "[ \t\n]")
                   1747:          (forward-char 1))
                   1748:       (let (obj (p (point)))
                   1749:        (skip-chars-forward "^ \t\n")
                   1750:        (buffer-substring p (point))))))
                   1751: 
                   1752: (defun forth-help-names-extend-comp (path-list result)
                   1753:   (cond ((null path-list) result)
                   1754:        ((null (car path-list))
                   1755:         (forth-help-names-extend-comp (cdr path-list) 
                   1756:               (concat result forth-help-file-suffix " ")))
                   1757:        (t (forth-help-names-extend-comp
                   1758:            (cdr path-list) (concat result
                   1759:                                    (expand-file-name (car path-list)) "/"
                   1760:                                    forth-help-file-suffix " ")))))
                   1761: 
                   1762: (defun forth-help-names-extended ()
                   1763:   (if forth-help-load-path
                   1764:       (forth-help-names-extend-comp forth-help-load-path "")
                   1765:     (error "forth-help-load-path not specified")))
                   1766: 
                   1767: 
1.7       anton    1768: ;(define-key forth-mode-map "\C-hf" 'forth-documentation)
1.1       anton    1769: 
                   1770: (defun forth-documentation (function)
                   1771:   "Display the full documentation of FORTH word."
                   1772:   (interactive
                   1773:    (let ((fn (forth-function-called-at-point))
                   1774:         (enable-recursive-minibuffers t)            
                   1775:         search-list
                   1776:         val)
                   1777:      (setq val (read-string (format "Describe forth word (default %s): " fn)))
                   1778:      (list (if (equal val "") fn val))))
                   1779:   (forth-get-doc (concat forth-search-command-prefix
                   1780:                         (grep-regexp-quote (concat function " ("))
                   1781:                         "[^)]*\-\-\" " (forth-help-names-extended)
                   1782:                         forth-search-command-suffix))
                   1783:   (message "C-x C-m switches back to the forth interaction window"))
                   1784: 
                   1785: (defun forth-get-doc (command)
                   1786:   "Display the full documentation of command."
                   1787:   (let ((curwin (get-buffer-window (window-buffer)))
                   1788:        reswin
                   1789:        pointmax)
                   1790:     (with-output-to-temp-buffer forth-help-buffer
                   1791:       (progn
                   1792:        (call-process "sh" nil forth-help-buffer t "-c" command)
                   1793:        (setq reswin (get-buffer-window forth-help-buffer))))
                   1794:     (setq reswin (get-buffer-window forth-help-buffer))
                   1795:     (select-window reswin)
                   1796:     (save-excursion
                   1797:       (goto-char (setq pointmax (point-max)))
                   1798:       (insert "--------------------\n\n"))
                   1799:     (let (fd doc) 
                   1800:       (while (setq fd (forth-get-file-data pointmax))
                   1801:        (setq doc (forth-get-doc-string fd))
                   1802:        (save-excursion
                   1803:          (goto-char (point-max))
                   1804:          (insert (substring (car fd) (string-match "[^/]*$" (car fd)))
                   1805:                  ":\n\n" doc "\n")))
                   1806:       (if (not doc)
                   1807:          (progn (goto-char (point-max)) (insert "Not found"))))
                   1808:     (select-window curwin)))
                   1809:   
                   1810: (defun forth-skip-error-lines ()
                   1811:   (let ((lines 0))
                   1812:     (save-excursion
                   1813:       (while (re-search-forward forth-grep-error-regexp nil t)
                   1814:        (beginning-of-line)
                   1815:        (forward-line 1)
                   1816:        (setq lines (1+ lines))))
                   1817:     (forward-line lines)))
                   1818: 
                   1819: (defun forth-get-doc-string (fd)
                   1820:   "Find file (car fd) and extract documentation from line (nth 1 fd)."
                   1821:   (let (result)
                   1822:     (save-window-excursion
                   1823:       (find-file (car fd))
                   1824:       (goto-line (nth 1 fd))
                   1825:       (if (not (eq (nth 1 fd) (1+ (count-lines (point-min) (point)))))
                   1826:          (error "forth-get-doc-string: serious error"))
                   1827:       (if (not (re-search-backward "\n[\t ]*\n" nil t))
                   1828:          (goto-char (point-min))
                   1829:        (goto-char (match-end 0)))
                   1830:       (let ((p (point)))
                   1831:        (if (not (re-search-forward "\n[\t ]*\n" nil t))
                   1832:            (goto-char (point-max)))
                   1833:        (setq result (buffer-substring p (point))))
                   1834:       (bury-buffer (current-buffer)))
                   1835:     result))
                   1836: 
                   1837: (defun forth-get-file-data (limit)
                   1838:   "Parse grep output and return '(filename line#) list. Return nil when
                   1839:  passing limit."
                   1840:   (forth-skip-error-lines)
                   1841:   (if (< (point) limit)
                   1842:       (let ((result (forth-get-file-data-cont limit)))
                   1843:        (forward-line 1)
                   1844:        (beginning-of-line)
                   1845:        result)))
                   1846: 
                   1847: (defun forth-get-file-data-cont (limit)
                   1848:   (let (result)
                   1849:     (let ((p (point)))
                   1850:       (skip-chars-forward "^:")
                   1851:       (setq result (buffer-substring p (point))))
                   1852:     (if (< (point) limit)
                   1853:        (let ((p (1+ (point))))
                   1854:          (forward-char 1)
                   1855:          (skip-chars-forward "^:")
                   1856:          (list result (string-to-int (buffer-substring p (point))))))))
                   1857: 
                   1858: (defun grep-regexp-quote (str)
                   1859:   (let ((i 0) (m 1) (res ""))
                   1860:     (while (/= m 0)
                   1861:       (setq m (string-to-char (substring str i)))
                   1862:       (if (/= m 0)
                   1863:          (progn
                   1864:            (setq i (1+ i))
                   1865:            (if (string-match (regexp-quote (char-to-string m))
                   1866:                              ".*\\^$[]")
                   1867:                (setq res (concat res "\\")))
                   1868:            (setq res (concat res (char-to-string m))))))
                   1869:     res))
                   1870: 
                   1871: 
1.9       anton    1872: (define-key forth-mode-map "\C-x\C-e" 'compile)
1.1       anton    1873: (define-key forth-mode-map "\C-x\C-n" 'next-error)
1.57      dvdkhlng 1874: (require 'compile)
1.1       anton    1875: 
1.6       anton    1876: (defvar forth-compile-command "gforth ")
1.9       anton    1877: ;(defvar forth-compilation-window-percent-height 30)
1.1       anton    1878: 
                   1879: (defun forth-compile (command)
                   1880:   (interactive (list (setq forth-compile-command (read-string "Compile command: " forth-compile-command))))
                   1881:   (forth-split-1 "*compilation*")
                   1882:   (setq ctools-compile-command command)
                   1883:   (compile1 ctools-compile-command "No more errors"))
                   1884: 
                   1885: 
1.12      pazsan   1886: ;;; Forth menu
                   1887: ;;; Mikael Karlsson <qramika@eras70.ericsson.se>
                   1888: 
1.61      dvdkhlng 1889: ;; (dk) code commented out due to complaints of XEmacs users.  After
                   1890: ;; all, there's imenu/speedbar, which uses much smarter scanning
                   1891: ;; rules.
                   1892: 
                   1893: ;; (cond ((string-match "XEmacs\\|Lucid" emacs-version)
                   1894: ;;        (require 'func-menu)
                   1895: 
                   1896: ;;   (defconst fume-function-name-regexp-forth
                   1897: ;;    "^\\(:\\)[ \t]+\\([^ \t]*\\)"
                   1898: ;;    "Expression to get word definitions in Forth.")
                   1899: 
                   1900: ;;   (setq fume-function-name-regexp-alist
                   1901: ;;       (append '((forth-mode . fume-function-name-regexp-forth) 
                   1902: ;;              ) fume-function-name-regexp-alist))
                   1903: 
                   1904: ;;   ;; Find next forth word in the buffer
                   1905: ;;   (defun fume-find-next-forth-function-name (buffer)
                   1906: ;;     "Searches for the next forth word in BUFFER."
                   1907: ;;     (set-buffer buffer)
                   1908: ;;     (if (re-search-forward fume-function-name-regexp nil t)
                   1909: ;;       (let ((beg (match-beginning 2))
                   1910: ;;             (end (match-end 2)))
                   1911: ;;         (cons (buffer-substring beg end) beg))))
1.12      pazsan   1912: 
1.61      dvdkhlng 1913: ;;   (setq fume-find-function-name-method-alist
                   1914: ;;   (append '((forth-mode    . fume-find-next-forth-function-name))))
1.12      pazsan   1915: 
1.61      dvdkhlng 1916: ;;   ))
1.12      pazsan   1917: ;;; End Forth menu
                   1918: 
                   1919: ;;; File folding of forth-files
                   1920: ;;; uses outline
                   1921: ;;; Toggle activation with M-x fold-f (when editing a forth-file) 
                   1922: ;;; Use f9 to expand, f10 to hide, Or the menubar in xemacs
                   1923: ;;;
                   1924: ;;; Works most of the times but loses sync with the cursor occasionally 
                   1925: ;;; Could be improved by also folding on comments
                   1926: 
1.61      dvdkhlng 1927: ;; (dk) This code needs a rewrite; just too ugly and doesn't use the
                   1928: ;; newer and smarter scanning rules of `imenu'. Who needs it anyway??
1.12      pazsan   1929: 
1.61      dvdkhlng 1930: ;; (require 'outline)
                   1931: 
                   1932: ;; (defun f-outline-level ()
                   1933: ;;   (cond     ((looking-at "\\`\\\\")
                   1934: ;;      0)
                   1935: ;;     ((looking-at "\\\\ SEC")
                   1936: ;;      0)
                   1937: ;;     ((looking-at "\\\\ \\\\ .*")
                   1938: ;;      0)
                   1939: ;;     ((looking-at "\\\\ DEFS")
                   1940: ;;      1)
                   1941: ;;     ((looking-at "\\/\\* ")
                   1942: ;;      1)
                   1943: ;;     ((looking-at ": .*")
                   1944: ;;      1)
                   1945: ;;     ((looking-at "\\\\G")
                   1946: ;;      2)
                   1947: ;;     ((looking-at "[ \t]+\\\\")
                   1948: ;;      3)))
1.57      dvdkhlng 1949:   
1.61      dvdkhlng 1950: ;; (defun fold-f  ()
                   1951: ;;    (interactive)
                   1952: ;;    (add-hook 'outline-minor-mode-hook 'hide-body)
                   1953: 
                   1954: ;;    ; outline mode header start, i.e. find word definitions
                   1955: ;; ;;;   (setq  outline-regexp  "^\\(:\\)[ \t]+\\([^ \t]*\\)")
                   1956: ;;    (setq  outline-regexp  "\\`\\\\\\|:\\|\\\\ SEC\\|\\\\G\\|[ \t]+\\\\\\|\\\\ DEFS\\|\\/\\*\\|\\\\ \\\\ .*")
                   1957: ;;    (setq outline-level 'f-outline-level)
                   1958: 
                   1959: ;;    (outline-minor-mode)
                   1960: ;;    (define-key outline-minor-mode-map '(shift up) 'hide-sublevels)
                   1961: ;;    (define-key outline-minor-mode-map '(shift right) 'show-children)
                   1962: ;;    (define-key outline-minor-mode-map '(shift left) 'hide-subtree)
                   1963: ;;    (define-key outline-minor-mode-map '(shift down) 'show-subtree))
                   1964: 
1.29      pazsan   1965: 
                   1966: ;;(define-key global-map '(shift up) 'fold-f)
                   1967: 
1.12      pazsan   1968: ;;; end file folding
                   1969: 
                   1970: ;;; func-menu is a package that scans your source file for function definitions
                   1971: ;;; and makes a menubar entry that lets you jump to any particular function
                   1972: ;;; definition by selecting it from the menu.  The following code turns this on
                   1973: ;;; for all of the recognized languages.  Scanning the buffer takes some time,
                   1974: ;;; but not much.
                   1975: ;;;
1.61      dvdkhlng 1976: ;; (cond ((string-match "XEmacs\\|Lucid" emacs-version)
                   1977: ;;        (require 'func-menu)
                   1978: ;; ;;       (define-key global-map 'f8 'function-menu)
                   1979: ;;        (add-hook 'find-fible-hooks 'fume-add-menubar-entry)
                   1980: ;; ;       (define-key global-map "\C-cg" 'fume-prompt-function-goto)
                   1981: ;; ;       (define-key global-map '(shift button3) 'mouse-function-menu)
                   1982: ;; ))
1.57      dvdkhlng 1983: 
                   1984: (provide 'forth-mode)
1.29      pazsan   1985: 
1.48      pazsan   1986: ;;; gforth.el ends here

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