gforth/gforth.el - view

File: [gforth] / gforth / gforth.el
Revision 1.77: download - view: text, annotated - select for diffs
Sat Apr 10 13:03:01 2010 UTC (14 years ago) by dvdkhlng
Branches: MAIN
CVS tags: HEAD

Properly indent after 'abi-code'.   Highlight code, abi-code, end-code.
Highlight gforth-specific constant syntax $123 %0101 etc. (for
forth-hilight-level >= 3)

1: ;;; gforth.el --- major mode for editing (G)Forth sources 2: 3: ;; Copyright (C) 1995,1996,1997,1998,2000,2001,2003,2004,2007,2008 Free Software Foundation, Inc. 4: 5: ;; This file is part of Gforth. 6: 7: ;; GForth is distributed in the hope that it will be useful, 8: ;; but WITHOUT ANY WARRANTY. No author or distributor 9: ;; accepts responsibility to anyone for the consequences of using it 10: ;; or for whether it serves any particular purpose or works at all, 11: ;; unless he says so in writing. Refer to the GNU Emacs General Public 12: ;; License for full details. 13: 14: ;; Everyone is granted permission to copy, modify and redistribute 15: ;; GNU Emacs, but only under the conditions described in the 16: ;; GNU Emacs General Public License. A copy of this license is 17: ;; supposed to have been given to you along with Gforth so you 18: ;; can know your rights and responsibilities. It should be in a 19: ;; file named COPYING. Among other things, the copyright notice 20: ;; and this notice must be preserved on all copies. 21: 22: ;; Author: Goran Rydqvist <gorry@ida.liu.se> 23: ;; Maintainer: David Kühling <dvdkhlng@gmx.de> 24: ;; Created: 16 July 88 by Goran Rydqvist 25: ;; Keywords: forth, gforth 26: 27: ;; Changes by anton 28: ;; This is a variant of forth.el that came with TILE. 29: ;; I left most of this stuff untouched and made just a few changes for 30: ;; the things I use (mainly indentation and syntax tables). 31: ;; So there is still a lot of work to do to adapt this to gforth. 32: 33: ;; Changes by David 34: ;; Added a syntax-hilighting engine, rewrote auto-indentation engine. 35: ;; Added support for block files. 36: ;; Replaced forth-process code with comint-based implementation. 37: 38: ;; Tested with Emacs 19.34, 20.5, 21 and XEmacs 21 39: 40: ;;------------------------------------------------------------------- 41: ;; A Forth indentation, documentation search and interaction library 42: ;;------------------------------------------------------------------- 43: ;; 44: ;; Written by Goran Rydqvist, gorry@ida.liu.se, Summer 1988 45: ;; Started: 16 July 88 46: ;; Version: 2.10 47: ;; Last update: 5 December 1989 by Mikael Patel, mip@ida.liu.se 48: ;; Last update: 25 June 1990 by Goran Rydqvist, gorry@ida.liu.se 49: ;; 50: ;; Documentation: See forth-mode (^HF forth-mode) 51: ;;------------------------------------------------------------------- 52: 53: ;;; Code: 54: 55: ;(setq debug-on-error t) 56: 57: ;; Code ripped from `version.el' for compatability with Emacs versions 58: ;; prior to 19.23. 59: (if (not (boundp 'emacs-major-version)) 60: (defconst emacs-major-version 61: (progn (string-match "^[0-9]+" emacs-version) 62: (string-to-number (match-string 0 emacs-version))))) 63: 64: ;; Code ripped from `subr.el' for compatability with Emacs versions 65: ;; prior to 20.1 66: (eval-when-compile 67: (defun forth-emacs-older (major minor) 68: (or (< emacs-major-version major) 69: (and (= emacs-major-version major) (< emacs-minor-version minor)))) 70: 71: (if (forth-emacs-older 20 1) 72: (progn 73: (defmacro when (cond &rest body) 74: "If COND yields non-nil, do BODY, else return nil." 75: (list 'if cond (cons 'progn body))) 76: (defmacro unless (cond &rest body) 77: "If COND yields nil, do BODY, else return nil." 78: (cons 'if (cons cond (cons nil body))))))) 79: 80: ;; `no-error' argument of require not supported in Emacs versions 81: ;; prior to 20.4 :-( 82: (eval-and-compile 83: (defun forth-require (feature) 84: (condition-case err (require feature) (error nil)))) 85: 86: (require 'font-lock) 87: 88: ;; define `font-lock-warning-face' in emacs-versions prior to 20.1 89: ;; (ripped from `font-lock.el') 90: (unless (boundp 'font-lock-warning-face) 91: (message "defining font-lock-warning-face") 92: (make-face 'font-lock-warning-face) 93: (defvar font-lock-warning-face 'font-lock-warning-face) 94: (set-face-foreground font-lock-warning-face "red") 95: (make-face-bold font-lock-warning-face)) 96: 97: ;; define `font-lock-constant-face' in XEmacs (just copy 98: ;; `font-lock-preprocessor-face') 99: (unless (boundp 'font-lock-constant-face) 100: (copy-face font-lock-preprocessor-face 'font-lock-constant-face)) 101: 102: 103: ;; define `regexp-opt' in emacs versions prior to 20.1 104: ;; (this implementation is extremely inefficient, though) 105: (eval-and-compile (forth-require 'regexp-opt)) 106: (unless (memq 'regexp-opt features) 107: (message (concat 108: "Warning: your Emacs version doesn't support `regexp-opt'. " 109: "Hilighting will be slow.")) 110: (defun regexp-opt (STRINGS &optional PAREN) 111: (let ((open (if PAREN "\$" "")) (close (if PAREN "\$" ""))) 112: (concat open (mapconcat 'regexp-quote STRINGS "\\|") close))) 113: (defun regexp-opt-depth (re) 114: (if (string= (substring re 0 2) "\\(") 1 0))) 115: 116: ; todo: 117: ; 118: 119: ; screen-height existiert nicht in XEmacs, frame-height ersetzen? 120: ; 121: 122: ; Wörter ordentlich hilighten, die nicht auf Whitespace beginnen ( ..)IF 123: ; -- mit aktueller Konzeption nicht möglich?? 124: ; 125: ; Konfiguration über customization groups 126: ; 127: ; Bereich nur auf Wortanfang/ende ausweiten, wenn Anfang bzw Ende in einem 128: ; Wort liegen (?) -- speed! 129: ; 130: ; 'forth-word' property muss eindeutig sein! 131: ; 132: ; Forth-Menu 133: ; 134: ; Interface zu GForth Prozessen (Patches von Michael Scholz) 135: ; 136: ; Byte-compile-Code rausschmeißen, Compilieren im Makefile über Emacs 137: ; batch-Modus 138: ; 139: ; forth-help Kram rausschmeißen 140: ; 141: ; XEmacs Kompatibilität? imenu/speedbar -> fume? 142: ; 143: ; Folding neuschreiben (neue Parser-Informationen benutzen) 144: 145: ;;; Motion-hooking (dk) 146: ;;; 147: (defun forth-idle-function () 148: "Function that is called when Emacs is idle to detect cursor motion 149: in forth-block-mode buffers (which is mainly used for screen number 150: display in). Currently ignores forth-mode buffers but that may change 151: in the future." 152: (if (eq major-mode 'forth-block-mode) 153: (forth-check-motion))) 154: 155: (defvar forth-idle-function-timer nil 156: "Timer that runs `forth-idle-function' or nil if no timer installed.") 157: 158: (defun forth-install-motion-hook () 159: "Install the motion-hooking mechanism. Currently uses idle timers 160: but might be transparently changed in the future." 161: (unless forth-idle-function-timer 162: ;; install idle function only once (first time forth-mode is used) 163: (setq forth-idle-function-timer 164: (run-with-idle-timer .05 t 'forth-idle-function)))) 165: 166: (defvar forth-was-point nil) 167: 168: (defun forth-check-motion () 169: "Run `forth-motion-hooks', if `point' changed since last call. This 170: used to be called via `post-command-hook' but uses idle timers now as 171: users complaint about lagging performance." 172: (when (or (eq forth-was-point nil) (/= forth-was-point (point))) 173: (setq forth-was-point (point)) 174: (run-hooks 'forth-motion-hooks))) 175: 176: 177: ;;; Hilighting and indentation engine (dk) 178: ;;; 179: (defvar forth-disable-parser nil 180: "*Non-nil means to disable on-the-fly parsing of Forth-code. 181: 182: This will disable hilighting of forth-mode buffers and will decrease 183: the smartness of the indentation engine. Only set it to non-nil, if 184: your computer is very slow. To disable hilighting, set 185: `forth-hilight-level' to zero.") 186: 187: (defvar forth-jit-parser nil 188: "*Non-nil means to parse Forth-code just-in-time. 189: 190: This eliminates the need for initially parsing forth-mode buffers and 191: thus speeds up loading of Forth files. That feature is only available 192: in Emacs21 (and newer versions).") 193: 194: (defvar forth-words nil 195: "List of words for hilighting and recognition of parsed text areas. 196: 197: Hilighting of object-oriented Forth code is achieved, by appending either 198: `forth-objects-words' or `forth-oof-words' to the list, depending on the values of `forth-use-objects' or `forth-use-oof'. 199: 200: After `forth-words' changed, `forth-compile-words' must be called to 201: make the changes take effect. 202: 203: Each item of `forth-words' has the form 204: (MATCHER TYPE HILIGHT . &optional PARSED-TEXT ...) 205: 206: MATCHER is either a list of strings to match, or a REGEXP. 207: If it's a REGEXP, it should not be surrounded by '\\<' or '\\>', since 208: that'll be done automatically by the search routines. 209: 210: TYPE should be one of 'definiton-starter', 'definition-ender', 'compile-only', 211: 'immediate' or 'non-immediate'. Those information are required to determine 212: whether a word actually parses (and whether that parsed text needs to be 213: hilighted). 214: 215: HILIGHT is a cons cell of the form (FACE . MINIMUM-LEVEL) 216: Where MINIMUM-LEVEL specifies the minimum value of `forth-hilight-level', 217: that's required for matching text to be hilighted. 218: 219: PARSED-TEXT specifies whether and how a word parses following text. You can 220: specify as many subsequent PARSED-TEXT as you wish, but that shouldn't be 221: necessary very often. It has the following form: 222: (DELIM-REGEXP SKIP-LEADING-FLAG PARSED-TYPE HILIGHT) 223: 224: DELIM-REGEXP is a regular expression that should match strings of length 1, 225: which are delimiters for the parsed text. 226: 227: A non-nil value for PARSE-LEADING-FLAG means, that leading delimiter strings 228: before parsed text should be skipped. This is the parsing behaviour of the 229: Forth word WORD. Set it to t for name-parsing words, nil for comments and 230: strings. 231: 232: PARSED-TYPE specifies what kind of text is parsed. It should be on of 'name', 233: 'string' or 'comment'.") 234: (setq forth-words 235: '( 236: (("[") definition-ender (font-lock-keyword-face . 1)) 237: (("]" "]l") definition-starter (font-lock-keyword-face . 1)) 238: ((":") definition-starter (font-lock-keyword-face . 1) 239: "[ \t\n]" t name (font-lock-function-name-face . 3)) 240: (("immediate" "compile-only" "restrict") 241: immediate (font-lock-keyword-face . 1)) 242: (("does>") compile-only (font-lock-keyword-face . 1)) 243: ((":noname") definition-starter (font-lock-keyword-face . 1)) 244: ((";" ";code") definition-ender (font-lock-keyword-face . 1)) 245: (("include" "require" "needs" "use") 246: non-immediate (font-lock-keyword-face . 1) 247: "[\n\t ]" t string (font-lock-string-face . 1)) 248: (("included" "required" "thru" "load") 249: non-immediate (font-lock-keyword-face . 1)) 250: (("code" "abi-code") 251: non-immediate (font-lock-keyword-face . 1) 252: "[ \t\n]" t name (font-lock-function-name-face . 3)) 253: (("end-code") 254: non-immediate (font-lock-keyword-face . 1)) 255: (("[char]") compile-only (font-lock-keyword-face . 1) 256: "[ \t\n]" t string (font-lock-string-face . 1)) 257: (("char") non-immediate (font-lock-keyword-face . 1) 258: "[ \t\n]" t string (font-lock-string-face . 1)) 259: (("s\"" "c\"") immediate (font-lock-string-face . 1) 260: "[\"\n]" nil string (font-lock-string-face . 1)) 261: ((".\"") compile-only (font-lock-string-face . 1) 262: "[\"\n]" nil string (font-lock-string-face . 1)) 263: (("abort\"") compile-only (font-lock-keyword-face . 1) 264: "[\"\n]" nil string (font-lock-string-face . 1)) 265: (("{") compile-only (font-lock-variable-name-face . 1) 266: "[\n}]" nil name (font-lock-variable-name-face . 1)) 267: ((".(" "(") immediate (font-lock-comment-face . 1) 268: ")" nil comment (font-lock-comment-face . 1)) 269: (("\\" "\\G") immediate (font-lock-comment-face . 1) 270: "[\n]" nil comment (font-lock-comment-face . 1)) 271: 272: (("[if]" "[?do]" "[do]" "[for]" "[begin]" 273: "[endif]" "[then]" "[loop]" "[+loop]" "[next]" "[until]" "[repeat]" 274: "[again]" "[while]" "[else]") 275: immediate (font-lock-keyword-face . 2)) 276: (("[ifdef]" "[ifundef]") immediate (font-lock-keyword-face . 2) 277: "[ \t\n]" t name (font-lock-function-name-face . 3)) 278: (("if" "begin" "ahead" "do" "?do" "+do" "u+do" "-do" "u-do" "for" 279: "case" "of" "?dup-if" "?dup-0=-if" "then" "endif" "until" 280: "repeat" "again" "leave" "?leave" 281: "loop" "+loop" "-loop" "next" "endcase" "endof" "else" "while" "try" 282: "recover" "endtry" "iferror" "restore" "endtry-iferror" 283: "assert(" "assert0(" "assert1(" "assert2(" 284: "assert3(" ")" "<interpretation" "<compilation" "interpretation>" 285: "compilation>") 286: compile-only (font-lock-keyword-face . 2)) 287: 288: (("true" "false" "c/l" "bl" "cell" "pi" "w/o" "r/o" "r/w") 289: non-immediate (font-lock-constant-face . 2)) 290: (("~~" "break:" "dbg") compile-only (font-lock-warning-face . 2)) 291: (("break\"") compile-only (font-lock-warning-face . 1) 292: "[\"\n]" nil string (font-lock-string-face . 1)) 293: (("postpone" "[is]" "defers" "[']" "[compile]") 294: compile-only (font-lock-keyword-face . 2) 295: "[ \t\n]" t name (font-lock-function-name-face . 3)) 296: (("is" "what's") immediate (font-lock-keyword-face . 2) 297: "[ \t\n]" t name (font-lock-function-name-face . 3)) 298: (("<is>" "'" "see") non-immediate (font-lock-keyword-face . 2) 299: "[ \t\n]" t name (font-lock-function-name-face . 3)) 300: (("[to]") compile-only (font-lock-keyword-face . 2) 301: "[ \t\n]" t name (font-lock-variable-name-face . 3)) 302: (("to") immediate (font-lock-keyword-face . 2) 303: "[ \t\n]" t name (font-lock-variable-name-face . 3)) 304: (("<to>") non-immediate (font-lock-keyword-face . 2) 305: "[ \t\n]" t name (font-lock-variable-name-face . 3)) 306: 307: (("create" "variable" "constant" "2variable" "2constant" "fvariable" 308: "fconstant" "value" "field" "user" "vocabulary" 309: "create-interpret/compile") 310: non-immediate (font-lock-type-face . 2) 311: "[ \t\n]" t name (font-lock-variable-name-face . 3)) 312: ("\\S-+%" non-immediate (font-lock-type-face . 2)) 313: (("defer" "alias" "create-interpret/compile:") 314: non-immediate (font-lock-type-face . 1) 315: "[ \t\n]" t name (font-lock-function-name-face . 3)) 316: (("end-struct") non-immediate (font-lock-keyword-face . 2) 317: "[ \t\n]" t name (font-lock-type-face . 3)) 318: (("struct") non-immediate (font-lock-keyword-face . 2)) 319: ("-?[0-9]+\$\\.[0-9]*e\\(-?[0-9]+\$?\\|\\.?[0-9a-f]*\\)" 320: immediate (font-lock-constant-face . 3)) 321: ("-?\$[&#][0-9]+\\|\\(0x\\|\\$\$[0-9a-f]+\\|%[01]+\\)" 322: immediate (font-lock-constant-face . 3)) 323: )) 324: 325: (defvar forth-use-objects nil 326: "*Non-nil makes forth-mode also hilight words from the \"Objects\" package.") 327: (defvar forth-objects-words 328: '(((":m") definition-starter (font-lock-keyword-face . 1) 329: "[ \t\n]" t name (font-lock-function-name-face . 3)) 330: (("m:") definition-starter (font-lock-keyword-face . 1)) 331: ((";m") definition-ender (font-lock-keyword-face . 1)) 332: (("[current]" "[parent]") compile-only (font-lock-keyword-face . 1) 333: "[ \t\n]" t name (font-lock-function-name-face . 3)) 334: (("current" "overrides") non-immediate (font-lock-keyword-face . 2) 335: "[ \t\n]" t name (font-lock-function-name-face . 3)) 336: (("[to-inst]") compile-only (font-lock-keyword-face . 2) 337: "[ \t\n]" t name (font-lock-variable-name-face . 3)) 338: (("[bind]") compile-only (font-lock-keyword-face . 2) 339: "[ \t\n]" t name (font-lock-type-face . 3) 340: "[ \t\n]" t name (font-lock-function-name-face . 3)) 341: (("bind") non-immediate (font-lock-keyword-face . 2) 342: "[ \t\n]" t name (font-lock-type-face . 3) 343: "[ \t\n]" t name (font-lock-function-name-face . 3)) 344: (("inst-var" "inst-value") non-immediate (font-lock-type-face . 2) 345: "[ \t\n]" t name (font-lock-variable-name-face . 3)) 346: (("method" "selector") 347: non-immediate (font-lock-type-face . 1) 348: "[ \t\n]" t name (font-lock-function-name-face . 3)) 349: (("end-class" "end-interface") 350: non-immediate (font-lock-keyword-face . 2) 351: "[ \t\n]" t name (font-lock-type-face . 3)) 352: (("public" "protected" "class" "exitm" "implementation" "interface" 353: "methods" "end-methods" "this") 354: non-immediate (font-lock-keyword-face . 2)) 355: (("object") non-immediate (font-lock-type-face . 2))) 356: "Hilighting description for words of the \"Objects\" package") 357: 358: 359: (defvar forth-use-oof nil 360: "*Non-nil makes forth-mode also hilight words from the \"OOF\" package.") 361: (defvar forth-oof-words 362: '((("class") non-immediate (font-lock-keyword-face . 2) 363: "[ \t\n]" t name (font-lock-type-face . 3)) 364: (("var") non-immediate (font-lock-type-face . 2) 365: "[ \t\n]" t name (font-lock-variable-name-face . 3)) 366: (("method" "early") non-immediate (font-lock-type-face . 2) 367: "[ \t\n]" t name (font-lock-function-name-face . 3)) 368: (("::" "super" "bind" "bound" "link") 369: immediate (font-lock-keyword-face . 2) 370: "[ \t\n]" t name (font-lock-function-name-face . 3)) 371: (("ptr" "asptr" "[]") 372: immediate (font-lock-keyword-face . 2) 373: "[ \t\n]" t name (font-lock-variable-name-face . 3)) 374: (("class;" "how:" "self" "new" "new[]" "definitions" "class?" "with" 375: "endwith") 376: non-immediate (font-lock-keyword-face . 2)) 377: (("object") non-immediate (font-lock-type-face . 2))) 378: "Hilighting description for words of the \"OOF\" package") 379: 380: (defvar forth-local-words nil 381: "List of Forth words to prepend to `forth-words'. Should be set by a 382: forth source, using a local variables list at the end of the file 383: (\"Local Variables: ... forth-local-words: ... End:\" construct).") 384: 385: (defvar forth-custom-words nil 386: "List of Forth words to prepend to `forth-words'. Should be set in your 387: .emacs.") 388: 389: (defvar forth-hilight-level 3 "*Level of hilighting of Forth code.") 390: 391: (defvar forth-compiled-words nil "Compiled representation of `forth-words'.") 392: 393: (defvar forth-indent-words nil 394: "List of words that have indentation behaviour. 395: Each element of `forth-indent-words' should have the form 396: (MATCHER INDENT1 INDENT2 &optional TYPE) 397: 398: MATCHER is either a list of strings to match, or a REGEXP. 399: If it's a REGEXP, it should not be surrounded by `\\<` or `\\>`, since 400: that'll be done automatically by the search routines. 401: 402: TYPE might be omitted. If it's specified, the only allowed value is 403: currently the symbol `non-immediate', meaning that the word will not 404: have any effect on indentation inside definitions. (:NONAME is a good 405: example for this kind of word). 406: 407: INDENT1 specifies how to indent a word that's located at the beginning 408: of a line, following any number of whitespaces. 409: 410: INDENT2 specifies how to indent words that are not located at the 411: beginning of a line. 412: 413: INDENT1 and INDENT2 are indentation specifications of the form 414: (SELF-INDENT . NEXT-INDENT), where SELF-INDENT is a numerical value, 415: specifying how the matching line and all following lines are to be 416: indented, relative to previous lines. NEXT-INDENT specifies how to indent 417: following lines, relative to the matching line. 418: 419: Even values of SELF-INDENT and NEXT-INDENT correspond to multiples of 420: `forth-indent-level'. Odd values get an additional 421: `forth-minor-indent-level' added/substracted. Eg a value of -2 indents 422: 1 * forth-indent-level to the left, wheras 3 indents 423: 1 * forth-indent-level + forth-minor-indent-level columns to the right.") 424: 425: (setq forth-indent-words 426: '((("if" "begin" "do" "?do" "+do" "-do" "u+do" 427: "u-do" "?dup-if" "?dup-0=-if" "case" "of" "try" "iferror" 428: "[if]" "[ifdef]" "[ifundef]" "[begin]" "[for]" "[do]" "[?do]") 429: (0 . 2) (0 . 2)) 430: ((":" ":noname" "code" "abi-code" "struct" "m:" ":m" "class" 431: "interface") 432: (0 . 2) (0 . 2) non-immediate) 433: ("\\S-+%$" (0 . 2) (0 . 0) non-immediate) 434: ((";" ";m") (-2 . 0) (0 . -2)) 435: (("again" "then" "endif" "endtry" "endcase" "endof" 436: "[then]" "[endif]" "[loop]" "[+loop]" "[next]" 437: "[until]" "[again]" "loop") 438: (-2 . 0) (0 . -2)) 439: (("end-code" "end-class" "end-interface" "end-class-noname" 440: "end-interface-noname" "end-struct" "class;") 441: (-2 . 0) (0 . -2) non-immediate) 442: (("protected" "public" "how:") (-1 . 1) (0 . 0) non-immediate) 443: (("+loop" "-loop" "until") (-2 . 0) (-2 . 0)) 444: (("else" "recover" "restore" "endtry-iferror" "[else]") 445: (-2 . 2) (0 . 0)) 446: (("does>") (-1 . 1) (0 . 0)) 447: (("while" "[while]") (-2 . 4) (0 . 2)) 448: (("repeat" "[repeat]") (-4 . 0) (0 . -4)))) 449: 450: (defvar forth-local-indent-words nil 451: "List of Forth words to prepend to `forth-indent-words', when a forth-mode 452: buffer is created. Should be set by a Forth source, using a local variables 453: list at the end of the file (\"Local Variables: ... forth-local-words: ... 454: End:\" construct).") 455: 456: (defvar forth-custom-indent-words nil 457: "List of Forth words to prepend to `forth-indent-words'. Should be set in 458: your .emacs.") 459: 460: (defvar forth-indent-level 4 461: "*Indentation of Forth statements.") 462: (defvar forth-minor-indent-level 2 463: "*Minor indentation of Forth statements.") 464: (defvar forth-compiled-indent-words nil) 465: 466: ;(setq debug-on-error t) 467: 468: ;; Filter list by predicate. This is a somewhat standard function for 469: ;; functional programming languages. So why isn't it already implemented 470: ;; in Lisp?? 471: (defun forth-filter (predicate list) 472: (let ((filtered nil)) 473: (dolist (item list) 474: (when (funcall predicate item) 475: (if filtered 476: (nconc filtered (list item)) 477: (setq filtered (cons item nil))))) 478: filtered)) 479: 480: ;; Helper function for `forth-compile-word': return whether word has to be 481: ;; added to the compiled word list, for syntactic parsing and hilighting. 482: (defun forth-words-filter (word) 483: (let* ((hilight (nth 2 word)) 484: (level (cdr hilight)) 485: (parsing-flag (nth 3 word))) 486: (or parsing-flag 487: (<= level forth-hilight-level)))) 488: 489: ;; Helper function for `forth-compile-word': translate one entry from 490: ;; `forth-words' into the form (regexp regexp-depth word-description) 491: (defun forth-compile-words-mapper (word) 492: ;; warning: we cannot rely on regexp-opt's PAREN argument, since 493: ;; XEmacs will use shy parens by default :-( 494: (let* ((matcher (car word)) 495: (regexp 496: (concat "\$" (cond ((stringp matcher) matcher) 497: ((listp matcher) (regexp-opt matcher)) 498: (t (error "Invalid matcher"))) 499: "\$")) 500: (depth (regexp-opt-depth regexp)) 501: (description (cdr word))) 502: (list regexp depth description))) 503: 504: ;; Read `words' and create a compiled representation suitable for efficient 505: ;; parsing of the form 506: ;; (regexp (subexp-count word-description) (subexp-count2 word-description2) 507: ;; ...) 508: (defun forth-compile-wordlist (words) 509: (let* ((mapped (mapcar 'forth-compile-words-mapper words)) 510: (regexp (concat "\\<\$" 511: (mapconcat 'car mapped "\\|") 512: "\$\\>")) 513: (sub-count 2) 514: (sub-list (mapcar 515: (lambda (i) 516: (let ((sub (cons sub-count (nth 2 i)))) 517: (setq sub-count (+ sub-count (nth 1 i))) 518: sub 519: )) 520: mapped))) 521: (let ((result (cons regexp sub-list))) 522: (byte-compile 'result) 523: result))) 524: 525: (defun forth-compile-words () 526: "Compile the the words from `forth-words' and `forth-indent-words' into 527: the format that's later used for doing the actual hilighting/indentation. 528: Store the resulting compiled wordlists in `forth-compiled-words' and 529: `forth-compiled-indent-words', respective" 530: (setq forth-compiled-words 531: (forth-compile-wordlist 532: (forth-filter 'forth-words-filter forth-words))) 533: (setq forth-compiled-indent-words 534: (forth-compile-wordlist forth-indent-words))) 535: 536: (defun forth-hack-local-variables () 537: "Parse and bind local variables, set in the contents of the current 538: forth-mode buffer. Prepend `forth-local-words' to `forth-words' and 539: `forth-local-indent-words' to `forth-indent-words'." 540: (hack-local-variables) 541: (setq forth-words (append forth-local-words forth-words)) 542: (setq forth-indent-words (append forth-local-indent-words 543: forth-indent-words))) 544: 545: (defun forth-customize-words () 546: "Add the words from `forth-custom-words' and `forth-custom-indent-words' 547: to `forth-words' and `forth-indent-words', respective. Add 548: `forth-objects-words' and/or `forth-oof-words' to `forth-words', if 549: `forth-use-objects' and/or `forth-use-oof', respective is set." 550: (setq forth-words (append forth-custom-words forth-words 551: (if forth-use-oof forth-oof-words nil) 552: (if forth-use-objects forth-objects-words nil))) 553: (setq forth-indent-words (append 554: forth-custom-indent-words forth-indent-words))) 555: 556: 557: 558: ;; get location of first character of previous forth word that's got 559: ;; properties 560: (defun forth-previous-start (pos) 561: (let* ((word (get-text-property pos 'forth-word)) 562: (prev (previous-single-property-change 563: (min (point-max) (1+ pos)) 'forth-word 564: (current-buffer) (point-min)))) 565: (if (or (= (point-min) prev) word) prev 566: (if (get-text-property (1- prev) 'forth-word) 567: (previous-single-property-change 568: prev 'forth-word (current-buffer) (point-min)) 569: (point-min))))) 570: 571: ;; Get location of the last character of the current/next forth word that's 572: ;; got properties, text that's parsed by the word is considered as parts of 573: ;; the word. 574: (defun forth-next-end (pos) 575: (let* ((word (get-text-property pos 'forth-word)) 576: (next (next-single-property-change pos 'forth-word 577: (current-buffer) (point-max)))) 578: (if word next 579: (if (get-text-property next 'forth-word) 580: (next-single-property-change 581: next 'forth-word (current-buffer) (point-max)) 582: (point-max))))) 583: 584: (defun forth-next-whitespace (pos) 585: (save-excursion 586: (goto-char pos) 587: (skip-syntax-forward "-" (point-max)) 588: (point))) 589: (defun forth-previous-word (pos) 590: (save-excursion 591: (goto-char pos) 592: (re-search-backward "\\<" pos (point-min) 1) 593: (point))) 594: 595: ;; Delete all properties, used by Forth mode, from `from' to `to'. 596: (defun forth-delete-properties (from to) 597: (remove-text-properties 598: from to '(face nil fontified nil 599: forth-parsed nil forth-word nil forth-state nil))) 600: 601: ;; Get the index of the branch of the most recently evaluated regular 602: ;; expression that matched. (used for identifying branches "a\\|b\\|c...") 603: (defun forth-get-regexp-branch () 604: (let ((count 2)) 605: (while (not (condition-case err (match-beginning count) 606: (args-out-of-range t))) ; XEmacs requires error handling 607: (setq count (1+ count))) 608: count)) 609: 610: ;; seek to next forth-word and return its "word-description" 611: (defun forth-next-known-forth-word (to) 612: (if (<= (point) to) 613: (progn 614: (let* ((regexp (car forth-compiled-words)) 615: (pos (re-search-forward regexp to t))) 616: (if pos (let ((branch (forth-get-regexp-branch)) 617: (descr (cdr forth-compiled-words))) 618: (goto-char (match-beginning 0)) 619: (cdr (assoc branch descr))) 620: 'nil))) 621: nil)) 622: 623: ;; Set properties of forth word at `point', eventually parsing subsequent 624: ;; words, and parsing all whitespaces. Set point to delimiter after word. 625: ;; The word, including it's parsed text gets the `forth-word' property, whose 626: ;; value is unique, and may be used for getting the word's start/end 627: ;; positions. 628: (defun forth-set-word-properties (state data) 629: (let* ((start (point)) 630: (end (progn (re-search-forward "[ \t]\\|$" (point-max) 1) 631: (point))) 632: (type (car data)) 633: (hilight (nth 1 data)) 634: (bad-word (and (not state) (eq type 'compile-only))) 635: (hlface (if bad-word font-lock-warning-face 636: (if (<= (cdr hilight) forth-hilight-level) 637: (car hilight) nil)))) 638: (when hlface (put-text-property start end 'face hlface)) 639: ;; if word parses in current state, process parsed range of text 640: (when (or (not state) (eq type 'compile-only) (eq type 'immediate)) 641: (let ((parse-data (nthcdr 2 data))) 642: (while parse-data 643: (let ((delim (nth 0 parse-data)) 644: (skip-leading (nth 1 parse-data)) 645: (parse-type (nth 2 parse-data)) 646: (parsed-hilight (nth 3 parse-data)) 647: (parse-start (point)) 648: (parse-end)) 649: (when skip-leading 650: (while (and (looking-at delim) (> (match-end 0) (point)) 651: (not (looking-at "\n"))) 652: (forward-char))) 653: (re-search-forward delim (point-max) 1) 654: (setq parse-end (point)) 655: (forth-delete-properties end parse-end) 656: (when (<= (cdr parsed-hilight) forth-hilight-level) 657: (put-text-property 658: parse-start parse-end 'face (car parsed-hilight))) 659: (put-text-property 660: parse-start parse-end 'forth-parsed parse-type) 661: (setq end parse-end) 662: (setq parse-data (nthcdr 4 parse-data)))))) 663: (put-text-property start end 'forth-word start))) 664: 665: ;; Search for known Forth words in the range `from' to `to', using 666: ;; `forth-next-known-forth-word' and set their properties via 667: ;; `forth-set-word-properties'. 668: (defun forth-update-properties (from to &optional loudly) 669: (save-excursion 670: (let ((msg-count 0) (state) (word-descr) (last-location)) 671: (goto-char (forth-previous-word (forth-previous-start 672: (max (point-min) (1- from))))) 673: (setq to (forth-next-end (min (point-max) (1+ to)))) 674: ;; `to' must be on a space delimiter, if a parsing word was changed 675: (setq to (forth-next-whitespace to)) 676: (setq state (get-text-property (point) 'forth-state)) 677: (setq last-location (point)) 678: (forth-delete-properties (point) to) 679: (put-text-property (point) to 'fontified t) 680: ;; hilight loop... 681: (while (setq word-descr (forth-next-known-forth-word to)) 682: (when loudly 683: (when (equal 0 (% msg-count 100)) 684: (message "Parsing Forth code...%s" 685: (make-string (/ msg-count 100) ?.))) 686: (setq msg-count (1+ msg-count))) 687: (forth-set-word-properties state word-descr) 688: (when state (put-text-property last-location (point) 'forth-state t)) 689: (let ((type (car word-descr))) 690: (if (eq type 'definition-starter) (setq state t)) 691: (if (eq type 'definition-ender) (setq state nil)) 692: (setq last-location (point)))) 693: ;; update state property up to `to' 694: (if (and state (< (point) to)) 695: (put-text-property last-location to 'forth-state t)) 696: ;; extend search if following state properties differ from current state 697: (if (< to (point-max)) 698: (if (not (equal state (get-text-property (1+ to) 'forth-state))) 699: (let ((extend-to (next-single-property-change 700: to 'forth-state (current-buffer) (point-max)))) 701: (forth-update-properties to extend-to)) 702: )) 703: ))) 704: 705: ;; save-buffer-state borrowed from `font-lock.el' 706: (eval-when-compile 707: (defmacro forth-save-buffer-state (varlist &rest body) 708: "Bind variables according to VARLIST and eval BODY restoring buffer state." 709: `(let* (,@(append varlist 710: '((modified (buffer-modified-p)) (buffer-undo-list t) 711: (inhibit-read-only t) (inhibit-point-motion-hooks t) 712: before-change-functions after-change-functions 713: deactivate-mark buffer-file-name buffer-file-truename))) 714: ,@body 715: (when (and (not modified) (buffer-modified-p)) 716: (set-buffer-modified-p nil))))) 717: 718: ;; Function that is added to the `change-functions' hook. Calls 719: ;; `forth-update-properties' and keeps care of disabling undo information 720: ;; and stuff like that. 721: (defun forth-change-function (from to len &optional loudly) 722: (save-match-data 723: (forth-save-buffer-state 724: () 725: (unless forth-disable-parser (forth-update-properties from to loudly)) 726: (forth-update-warn-long-lines)))) 727: 728: (defun forth-fontification-function (from) 729: "Function to be called from `fontification-functions' of Emacs 21." 730: (save-match-data 731: (forth-save-buffer-state 732: ((to (min (point-max) (+ from 100)))) 733: (unless (or forth-disable-parser (not forth-jit-parser) 734: (get-text-property from 'fontified)) 735: (forth-update-properties from to))))) 736: 737: (eval-when-compile 738: (byte-compile 'forth-set-word-properties) 739: (byte-compile 'forth-next-known-forth-word) 740: (byte-compile 'forth-update-properties) 741: (byte-compile 'forth-delete-properties) 742: (byte-compile 'forth-get-regexp-branch)) 743: 744: ;;; imenu support 745: ;;; 746: (defvar forth-defining-words 747: '("VARIABLE" "CONSTANT" "2VARIABLE" "2CONSTANT" "FVARIABLE" "FCONSTANT" 748: "USER" "VALUE" "field" "end-struct" "VOCABULARY" "CREATE" ":" "CODE" 749: "DEFER" "ALIAS") 750: "List of words, that define the following word. 751: Used for imenu index generation.") 752: 753: (defvar forth-defining-words-regexp nil 754: "Regexp that's generated for matching `forth-defining-words'") 755: 756: (defun forth-next-definition-starter () 757: (progn 758: (let* ((pos (re-search-forward forth-defining-words-regexp (point-max) t))) 759: (if pos 760: (if (or (text-property-not-all (match-beginning 0) (match-end 0) 761: 'forth-parsed nil) 762: (text-property-not-all (match-beginning 0) (match-end 0) 763: 'forth-state nil)) 764: (forth-next-definition-starter) 765: t) 766: nil)))) 767: 768: (defun forth-create-index () 769: (let* ((forth-defining-words-regexp 770: (concat "\\<\$" (regexp-opt forth-defining-words) "\$\\>")) 771: (index nil)) 772: (goto-char (point-min)) 773: (while (forth-next-definition-starter) 774: (if (looking-at "[ \t]*\$[^ \t\n]+\$") 775: (setq index (cons (cons (match-string 1) (point)) index)))) 776: index)) 777: 778: ;; top-level require is executed at byte-compile and load time 779: (eval-and-compile (forth-require 'speedbar)) 780: 781: ;; this code is executed at load-time only 782: (when (memq 'speedbar features) 783: (speedbar-add-supported-extension ".fs") 784: (speedbar-add-supported-extension ".fb")) 785: 786: ;; (require 'profile) 787: ;; (setq profile-functions-list '(forth-set-word-properties forth-next-known-forth-word forth-update-properties forth-delete-properties forth-get-regexp-branch)) 788: 789: ;;; Indentation 790: ;;; 791: 792: ;; Return, whether `pos' is the first forth word on its line 793: (defun forth-first-word-on-line-p (pos) 794: (save-excursion 795: (beginning-of-line) 796: (skip-chars-forward " \t") 797: (= pos (point)))) 798: 799: ;; Return indentation data (SELF-INDENT . NEXT-INDENT) of next known 800: ;; indentation word, or nil if there is no word up to `to'. 801: ;; Position `point' at location just after found word, or at `to'. Parsed 802: ;; ranges of text will not be taken into consideration! 803: (defun forth-next-known-indent-word (to) 804: (if (<= (point) to) 805: (progn 806: (let* ((regexp (car forth-compiled-indent-words)) 807: (pos (re-search-forward regexp to t))) 808: (if pos 809: (let* ((start (match-beginning 0)) 810: (end (match-end 0)) 811: (branch (forth-get-regexp-branch)) 812: (descr (cdr forth-compiled-indent-words)) 813: (indent (cdr (assoc branch descr))) 814: (type (nth 2 indent))) 815: ;; skip words that are parsed (strings/comments) and 816: ;; non-immediate words inside definitions 817: (if (or (text-property-not-all start end 'forth-parsed nil) 818: (and (eq type 'non-immediate) 819: (text-property-not-all start end 820: 'forth-state nil))) 821: (forth-next-known-indent-word to) 822: (if (forth-first-word-on-line-p (match-beginning 0)) 823: (nth 0 indent) (nth 1 indent)))) 824: nil))) 825: nil)) 826: 827: ;; Translate indentation value `indent' to indentation column. Multiples of 828: ;; 2 correspond to multiples of `forth-indent-level'. Odd numbers get an 829: ;; additional `forth-minor-indent-level' added (or substracted). 830: (defun forth-convert-to-column (indent) 831: (let* ((sign (if (< indent 0) -1 1)) 832: (value (abs indent)) 833: (major (* (/ value 2) forth-indent-level)) 834: (minor (* (% value 2) forth-minor-indent-level))) 835: (* sign (+ major minor)))) 836: 837: ;; Return the column increment, that the current line of forth code does to 838: ;; the current or following lines. `which' specifies which indentation values 839: ;; to use. 1 means the indentation of following lines relative to current 840: ;; line, 0 means the indentation of the current line relative to the previous 841: ;; line. Return `nil', if there are no indentation words on the current line. 842: (defun forth-get-column-incr (which) 843: (save-excursion 844: (let ((regexp (car forth-compiled-indent-words)) 845: (word-indent) 846: (self-indent nil) 847: (next-indent nil) 848: (to (save-excursion (end-of-line) (point)))) 849: (beginning-of-line) 850: (while (setq word-indent (forth-next-known-indent-word to)) 851: (let* ((self-incr (car word-indent)) 852: (next-incr (cdr word-indent)) 853: (self-column-incr (forth-convert-to-column self-incr)) 854: (next-column-incr (forth-convert-to-column next-incr))) 855: (setq next-indent (if next-indent next-indent 0)) 856: (setq self-indent (if self-indent self-indent 0)) 857: (if (or (and (> next-indent 0) (< self-column-incr 0)) 858: (and (< next-indent 0) (> self-column-incr 0))) 859: (setq next-indent (+ next-indent self-column-incr)) 860: (setq self-indent (+ self-indent self-column-incr))) 861: (setq next-indent (+ next-indent next-column-incr)))) 862: (nth which (list self-indent next-indent))))) 863: 864: ;; Find previous line that contains indentation words, return the column, 865: ;; to which following text should be indented to. 866: (defun forth-get-anchor-column () 867: (save-excursion 868: (if (/= 0 (forward-line -1)) 0 869: (let ((indent)) 870: (while (not (or (setq indent (forth-get-column-incr 1)) 871: (<= (point) (point-min)))) 872: (forward-line -1)) 873: (+ (current-indentation) (if indent indent 0)))))) 874: 875: (defun forth-indent-line (&optional flag) 876: "Correct indentation of the current Forth line." 877: (let* ((anchor (forth-get-anchor-column)) 878: (column-incr (forth-get-column-incr 0))) 879: (forth-indent-to (if column-incr (+ anchor column-incr) anchor)))) 880: 881: (defun forth-current-column () 882: (- (point) (save-excursion (beginning-of-line) (point)))) 883: (defun forth-current-indentation () 884: (- (save-excursion (beginning-of-line) (forward-to-indentation 0) (point)) 885: (save-excursion (beginning-of-line) (point)))) 886: 887: (defun forth-indent-to (x) 888: (let ((p nil)) 889: (setq p (- (forth-current-column) (forth-current-indentation))) 890: (forth-delete-indentation) 891: (beginning-of-line) 892: (indent-to x) 893: (if (> p 0) (forward-char p)))) 894: 895: (defun forth-delete-indentation () 896: (save-excursion 897: (delete-region 898: (progn (beginning-of-line) (point)) 899: (progn (back-to-indentation) (point))))) 900: 901: (defun forth-indent-command () 902: (interactive) 903: (forth-indent-line t)) 904: 905: ;; remove trailing whitespaces in current line 906: (defun forth-remove-trailing () 907: (save-excursion 908: (end-of-line) 909: (delete-region (point) (progn (skip-chars-backward " \t") (point))))) 910: 911: ;; insert newline, removing any trailing whitespaces in the current line 912: (defun forth-newline-remove-trailing () 913: (save-excursion 914: (delete-region (point) (progn (skip-chars-backward " \t") (point)))) 915: (newline)) 916: ; (let ((was-point (point-marker))) 917: ; (unwind-protect 918: ; (progn (forward-line -1) (forth-remove-trailing)) 919: ; (goto-char (was-point))))) 920: 921: ;; workaround for bug in `reindent-then-newline-and-indent' 922: (defun forth-reindent-then-newline-and-indent () 923: (interactive "*") 924: (indent-according-to-mode) 925: (forth-newline-remove-trailing) 926: (indent-according-to-mode)) 927: 928: 929: ;;; Block file encoding/decoding (dk) 930: ;;; 931: 932: (defconst forth-c/l 64 "Number of characters per block line") 933: (defconst forth-l/b 16 "Number of lines per block") 934: 935: ;; Check whether the unconverted block file line, point is in, does not 936: ;; contain `\n' and `\t' characters. 937: (defun forth-check-block-line (line) 938: (let ((end (save-excursion (beginning-of-line) (forward-char forth-c/l) 939: (point)))) 940: (save-excursion 941: (beginning-of-line) 942: (when (search-forward "\n" end t) 943: (message "Warning: line %i contains newline character #10" line) 944: (ding t)) 945: (beginning-of-line) 946: (when (search-forward "\t" end t) 947: (message "Warning: line %i contains tab character #8" line) 948: (ding t))))) 949: 950: (defun forth-convert-from-block (from to) 951: "Convert block file format to stream source in current buffer." 952: (let ((line (count-lines (point-min) from))) 953: (save-excursion 954: (goto-char from) 955: (set-mark to) 956: (while (< (+ (point) forth-c/l) (mark t)) 957: (setq line (1+ line)) 958: (forth-check-block-line line) 959: (forward-char forth-c/l) 960: (forth-newline-remove-trailing)) 961: (when (= (+ (point) forth-c/l) (mark t)) 962: (forth-remove-trailing)) 963: (mark t)))) 964: 965: ;; Pad a line of a block file up to `forth-c/l' characters, positioning `point' 966: ;; at the end of line. 967: (defun forth-pad-block-line () 968: (save-excursion 969: (end-of-line) 970: (if (<= (current-column) forth-c/l) 971: (move-to-column forth-c/l t) 972: (message "Line %i longer than %i characters, truncated" 973: (count-lines (point-min) (point)) forth-c/l) 974: (ding t) 975: (move-to-column forth-c/l t) 976: (delete-region (point) (progn (end-of-line) (point)))))) 977: 978: ;; Replace tab characters in current line by spaces. 979: (defun forth-convert-tabs-in-line () 980: (save-excursion 981: (beginning-of-line) 982: (while (search-forward "\t" (save-excursion (end-of-line) (point)) t) 983: (backward-char) 984: (delete-region (point) (1+ (point))) 985: (insert-char ?\ (- tab-width (% (current-column) tab-width)))))) 986: 987: ;; Delete newline at end of current line, concatenating it with the following 988: ;; line. Place `point' at end of newly formed line. 989: (defun forth-delete-newline () 990: (end-of-line) 991: (delete-region (point) (progn (beginning-of-line 2) (point)))) 992: 993: (defun forth-convert-to-block (from to &optional original-buffer) 994: "Convert range of text to block file format in current buffer." 995: (let* ((lines 0)) ; I have to count lines myself, since `count-lines' has 996: ; problems with trailing newlines... 997: (save-excursion 998: (goto-char from) 999: (set-mark to) 1000: ;; pad lines to full length (`forth-c/l' characters per line) 1001: (while (< (save-excursion (end-of-line) (point)) (mark t)) 1002: (setq lines (1+ lines)) 1003: (forth-pad-block-line) 1004: (forth-convert-tabs-in-line) 1005: (forward-line)) 1006: ;; also make sure the last line is padded, if `to' is at its end 1007: (end-of-line) 1008: (when (= (point) (mark t)) 1009: (setq lines (1+ lines)) 1010: (forth-pad-block-line) 1011: (forth-convert-tabs-in-line)) 1012: ;; remove newlines between lines 1013: (goto-char from) 1014: (while (< (save-excursion (end-of-line) (point)) (mark t)) 1015: (forth-delete-newline)) 1016: ;; append empty lines, until last block is complete 1017: (goto-char (mark t)) 1018: (let* ((required (* (/ (+ lines (1- forth-l/b)) forth-l/b) forth-l/b)) 1019: (pad-lines (- required lines))) 1020: (while (> pad-lines 0) 1021: (insert-char ?\ forth-c/l) 1022: (setq pad-lines (1- pad-lines)))) 1023: (point)))) 1024: 1025: (defun forth-detect-block-file-p () 1026: "Return non-nil if the current buffer is in block file format. Detection is 1027: done by checking whether the first line has 1024 characters or more." 1028: (save-restriction 1029: (widen) 1030: (save-excursion 1031: (goto-char (point-min)) 1032: (end-of-line) 1033: (>= (current-column) 1024)))) 1034: 1035: ;; add block file conversion routines to `format-alist' 1036: (defconst forth-block-format-description 1037: '(forth-blocks "Forth block source file" nil 1038: forth-convert-from-block forth-convert-to-block 1039: t normal-mode)) 1040: (unless (memq forth-block-format-description format-alist) 1041: (setq format-alist (cons forth-block-format-description format-alist))) 1042: 1043: ;;; End block file encoding/decoding 1044: 1045: ;;; Block file editing 1046: ;;; 1047: (defvar forth-overlay-arrow-string ">>") 1048: (defvar forth-block-base 1 "Number of first block in block file") 1049: (defvar forth-show-screen nil 1050: "Non-nil means to show screen starts and numbers (for block files)") 1051: (defvar forth-warn-long-lines nil 1052: "Non-nil means to warn about lines that are longer than 64 characters") 1053: 1054: (defvar forth-screen-marker nil) 1055: (defvar forth-screen-number-string nil) 1056: 1057: (defun forth-update-show-screen () 1058: "If `forth-show-screen' is non-nil, put overlay arrow to start of screen, 1059: `point' is in. If arrow now points to different screen than before, display 1060: screen number." 1061: (if (not forth-show-screen) 1062: (setq overlay-arrow-string nil) 1063: (save-excursion 1064: (let* ((line (count-lines (point-min) (min (point-max) (1+ (point))))) 1065: (first-line (1+ (* (/ (1- line) forth-l/b) forth-l/b))) 1066: (scr (+ forth-block-base (/ first-line forth-l/b)))) 1067: (setq overlay-arrow-string forth-overlay-arrow-string) 1068: (goto-line first-line) 1069: (setq overlay-arrow-position forth-screen-marker) 1070: (set-marker forth-screen-marker 1071: (save-excursion (goto-line first-line) (point))) 1072: (setq forth-screen-number-string (format "%d" scr)))))) 1073: 1074: (add-hook 'forth-motion-hooks 'forth-update-show-screen) 1075: 1076: (defun forth-update-warn-long-lines () 1077: "If `forth-warn-long-lines' is non-nil, display a warning whenever a line 1078: exceeds 64 characters." 1079: (when forth-warn-long-lines 1080: (when (> (save-excursion (end-of-line) (current-column)) forth-c/l) 1081: (message "Warning: current line exceeds %i characters" 1082: forth-c/l)))) 1083: 1084: (add-hook 'forth-motion-hooks 'forth-update-warn-long-lines) 1085: 1086: ;;; End block file editing 1087: 1088: 1089: (defvar forth-mode-abbrev-table nil 1090: "Abbrev table in use in Forth-mode buffers.") 1091: 1092: (define-abbrev-table 'forth-mode-abbrev-table ()) 1093: 1094: (defvar forth-mode-map nil 1095: "Keymap used in Forth mode.") 1096: 1097: (if (not forth-mode-map) 1098: (setq forth-mode-map (make-sparse-keymap))) 1099: 1100: ;(define-key forth-mode-map "\M-\C-x" 'compile) 1101: (define-key forth-mode-map "\C-x\\" 'comment-region) 1102: (define-key forth-mode-map "\C-x~" 'forth-remove-tracers) 1103: (define-key forth-mode-map "\C-x\C-m" 'forth-split) 1104: (define-key forth-mode-map "\e " 'forth-reload) 1105: (define-key forth-mode-map "\t" 'forth-indent-command) 1106: (define-key forth-mode-map "\C-m" 'forth-reindent-then-newline-and-indent) 1107: (define-key forth-mode-map "\M-q" 'forth-fill-paragraph) 1108: (define-key forth-mode-map "\e." 'forth-find-tag) 1109: 1110: ;; setup for C-h C-i to work 1111: (eval-and-compile (forth-require 'info-look)) 1112: (when (memq 'info-look features) 1113: (defvar forth-info-lookup '(symbol (forth-mode "\\S-+" t 1114: (("(gforth)Word Index")) 1115: "\\S-+"))) 1116: (unless (memq forth-info-lookup info-lookup-alist) 1117: (setq info-lookup-alist (cons forth-info-lookup info-lookup-alist))) 1118: ;; in X-Emacs C-h C-i is by default bound to Info-query 1119: (define-key forth-mode-map [?\C-h ?\C-i] 'info-lookup-symbol)) 1120: 1121: ;; (info-lookup-add-help 1122: ;; :topic 'symbol 1123: ;; :mode 'forth-mode 1124: ;; :regexp "[^ 1125: ;; ]+" 1126: ;; :ignore-case t 1127: ;; :doc-spec '(("(gforth)Name Index" nil "`" "' ")))) 1128: 1129: (require 'etags) 1130: 1131: (defun forth-find-tag (tagname &optional next-p regexp-p) 1132: (interactive (find-tag-interactive "Find tag: ")) 1133: (unless (or regexp-p next-p) 1134: (setq tagname (concat "\$^\\|\\s-+\$\$" (regexp-quote tagname) 1135: "\$\\s-*\x7f"))) 1136: (switch-to-buffer 1137: (find-tag-noselect tagname next-p t))) 1138: 1139: (defvar forth-mode-syntax-table nil 1140: "Syntax table in use in Forth-mode buffers.") 1141: 1142: ;; Important: hilighting/indentation now depends on a correct syntax table. 1143: ;; All characters, except whitespace *must* belong to the "word constituent" 1144: ;; syntax class. If different behaviour is required, use of Categories might 1145: ;; help. 1146: (if (not forth-mode-syntax-table) 1147: (progn 1148: (setq forth-mode-syntax-table (make-syntax-table)) 1149: (let ((char 0)) 1150: (while (< char ?!) 1151: (modify-syntax-entry char " " forth-mode-syntax-table) 1152: (setq char (1+ char))) 1153: (while (< char 256) 1154: (modify-syntax-entry char "w" forth-mode-syntax-table) 1155: (setq char (1+ char)))) 1156: )) 1157: 1158: (defun forth-mode-variables () 1159: (set-syntax-table forth-mode-syntax-table) 1160: (setq local-abbrev-table forth-mode-abbrev-table) 1161: (make-local-variable 'paragraph-start) 1162: (setq paragraph-start (concat "^$\\|" page-delimiter)) 1163: (make-local-variable 'paragraph-separate) 1164: (setq paragraph-separate paragraph-start) 1165: (make-local-variable 'indent-line-function) 1166: (setq indent-line-function 'forth-indent-line) 1167: ; (make-local-variable 'require-final-newline) 1168: ; (setq require-final-newline t) 1169: (make-local-variable 'comment-start) 1170: (setq comment-start "\\ ") 1171: ;(make-local-variable 'comment-end) 1172: ;(setq comment-end " )") 1173: (make-local-variable 'comment-column) 1174: (setq comment-column 40) 1175: (make-local-variable 'comment-start-skip) 1176: (setq comment-start-skip "\\\\ ") 1177: (make-local-variable 'comment-indent-function) 1178: (setq comment-indent-function 'forth-comment-indent) 1179: (make-local-variable 'parse-sexp-ignore-comments) 1180: (setq parse-sexp-ignore-comments t) 1181: (setq case-fold-search t) 1182: (make-local-variable 'forth-was-point) 1183: (setq forth-was-point -1) 1184: (make-local-variable 'forth-words) 1185: (make-local-variable 'forth-compiled-words) 1186: (make-local-variable 'forth-compiled-indent-words) 1187: (make-local-variable 'forth-hilight-level) 1188: (make-local-variable 'after-change-functions) 1189: (make-local-variable 'forth-show-screen) 1190: (make-local-variable 'forth-screen-marker) 1191: (make-local-variable 'forth-warn-long-lines) 1192: (make-local-variable 'forth-screen-number-string) 1193: (make-local-variable 'forth-use-oof) 1194: (make-local-variable 'forth-use-objects) 1195: (setq forth-screen-marker (copy-marker 0)) 1196: (add-hook 'after-change-functions 'forth-change-function) 1197: (if (and forth-jit-parser (>= emacs-major-version 21)) 1198: (add-hook 'fontification-functions 'forth-fontification-function)) 1199: (setq imenu-create-index-function 'forth-create-index)) 1200: 1201: ;;;###autoload 1202: (defun forth-mode () 1203: " 1204: Major mode for editing Forth code. Tab indents for Forth code. Comments 1205: are delimited with \\ and newline. Paragraphs are separated by blank lines 1206: only. Block files are autodetected, when read, and converted to normal 1207: stream source format. See also `forth-block-mode'. 1208: \\{forth-mode-map} 1209: 1210: Variables controlling syntax hilighting/recognition of parsed text: 1211: `forth-words' 1212: List of words that have a special parsing behaviour and/or should be 1213: hilighted. Add custom words by setting forth-custom-words in your 1214: .emacs, or by setting forth-local-words, in source-files' local 1215: variables lists. 1216: forth-use-objects 1217: Set this variable to non-nil in your .emacs, or in a local variables 1218: list, to hilight and recognize the words from the \"Objects\" package 1219: for object-oriented programming. 1220: forth-use-oof 1221: Same as above, just for the \"OOF\" package. 1222: forth-custom-words 1223: List of custom Forth words to prepend to `forth-words'. Should be set 1224: in your .emacs. 1225: forth-local-words 1226: List of words to prepend to `forth-words', whenever a forth-mode 1227: buffer is created. That variable should be set by Forth sources, using 1228: a local variables list at the end of file, to get file-specific 1229: hilighting. 1230: 0 [IF] 1231: Local Variables: ... 1232: forth-local-words: ... 1233: End: 1234: [THEN] 1235: forth-hilight-level 1236: Controls how much syntax hilighting is done. Should be in the range 1237: 0..3 1238: 1239: Variables controlling indentation style: 1240: `forth-indent-words' 1241: List of words that influence indentation. 1242: forth-local-indent-words 1243: List of words to prepend to `forth-indent-words', similar to 1244: forth-local-words. Should be used for specifying file-specific 1245: indentation, using a local variables list. 1246: forth-custom-indent-words 1247: List of words to prepend to `forth-indent-words'. Should be set in your 1248: .emacs. 1249: forth-indent-level 1250: Indentation increment/decrement of Forth statements. 1251: forth-minor-indent-level 1252: Minor indentation increment/decrement of Forth statemens. 1253: 1254: Variables controlling block-file editing: 1255: forth-show-screen 1256: Non-nil means, that the start of the current screen is marked by an 1257: overlay arrow, and screen numbers are displayed in the mode line. 1258: This variable is by default nil for `forth-mode' and t for 1259: `forth-block-mode'. 1260: forth-overlay-arrow-string 1261: String to display as the overlay arrow, when `forth-show-screen' is t. 1262: Setting this variable to nil disables the overlay arrow. 1263: forth-block-base 1264: Screen number of the first block in a block file. Defaults to 1. 1265: forth-warn-long-lines 1266: Non-nil means that a warning message is displayed whenever you edit or 1267: move over a line that is longer than 64 characters (the maximum line 1268: length that can be stored into a block file). This variable defaults to 1269: t for `forth-block-mode' and to nil for `forth-mode'. 1270: 1271: Variables controlling interaction with the Forth-process (also see 1272: `run-forth'): 1273: forth-program-name 1274: Program invoked by the `run-forth' command (including arguments). 1275: inferior-forth-mode-hook 1276: Hook for customising inferior-forth-mode. 1277: forth-compile-command 1278: Default command to execute on `compile'. 1279: " 1280: (interactive) 1281: (kill-all-local-variables) 1282: (use-local-map forth-mode-map) 1283: (setq mode-name "Forth") 1284: (setq major-mode 'forth-mode) 1285: (forth-install-motion-hook) 1286: ;; convert buffer contents from block file format, if necessary 1287: (when (forth-detect-block-file-p) 1288: (widen) 1289: (message "Converting from Forth block source...") 1290: (forth-convert-from-block (point-min) (point-max)) 1291: (message "Converting from Forth block source...done")) 1292: ;; if user switched from forth-block-mode to forth-mode, make sure the file 1293: ;; is now stored as normal strem source 1294: (when (equal buffer-file-format '(forth-blocks)) 1295: (setq buffer-file-format nil)) 1296: (forth-mode-variables) 1297: ; (if (not (forth-process-running-p)) 1298: ; (run-forth forth-program-name)) 1299: (run-hooks 'forth-mode-hook)) 1300: 1301: ;;;###autoload 1302: (define-derived-mode forth-block-mode forth-mode "Forth Block Source" 1303: "Major mode for editing Forth block source files, derived from 1304: `forth-mode'. Differences to `forth-mode' are: 1305: * files are converted to block format, when written (`buffer-file-format' 1306: is set to `(forth-blocks)') 1307: * `forth-show-screen' and `forth-warn-long-lines' are t by default 1308: 1309: Note that the length of lines in block files is limited to 64 characters. 1310: When writing longer lines to a block file, a warning is displayed in the 1311: echo area and the line is truncated. 1312: 1313: Another problem is imposed by block files that contain newline or tab 1314: characters. When Emacs converts such files back to block file format, 1315: it'll translate those characters to a number of spaces. However, when 1316: you read such a file, a warning message is displayed in the echo area, 1317: including a line number that may help you to locate and fix the problem. 1318: 1319: So have a look at the *Messages* buffer, whenever you hear (or see) Emacs' 1320: bell during block file read/write operations." 1321: (setq buffer-file-format '(forth-blocks)) 1322: (setq forth-show-screen t) 1323: (setq forth-warn-long-lines t) 1324: (setq forth-screen-number-string (format "%d" forth-block-base)) 1325: (setq mode-line-format (append (reverse (cdr (reverse mode-line-format))) 1326: '("--S" forth-screen-number-string "-%-")))) 1327: 1328: (add-hook 'forth-mode-hook 1329: '(lambda () 1330: (make-local-variable 'compile-command) 1331: (setq compile-command "gforth ") 1332: (forth-hack-local-variables) 1333: (forth-customize-words) 1334: (forth-compile-words) 1335: (unless (and forth-jit-parser (>= emacs-major-version 21)) 1336: (forth-change-function (point-min) (point-max) nil t)))) 1337: 1338: (defun forth-fill-paragraph () 1339: "Fill comments (starting with '\'; do not fill code (block style 1340: programmers who tend to fill code won't use emacs anyway:-)." 1341: ; Currently only comments at the start of the line are filled. 1342: ; Something like lisp-fill-paragraph may be better. We cannot use 1343: ; fill-paragraph, because it removes the \ from the first comment 1344: ; line. Therefore we have to look for the first line of the comment 1345: ; and use fill-region. 1346: (interactive) 1347: (save-excursion 1348: (beginning-of-line) 1349: (while (and 1350: (= (forward-line -1) 0) 1351: (looking-at "[ \t]*\\\\g?[ \t]+"))) 1352: (if (not (looking-at "[ \t]*\\\\g?[ \t]+")) 1353: (forward-line 1)) 1354: (let ((from (point)) 1355: (to (save-excursion (forward-paragraph) (point)))) 1356: (if (looking-at "[ \t]*\\\\g?[ \t]+") 1357: (progn (goto-char (match-end 0)) 1358: (set-fill-prefix) 1359: (fill-region from to nil)))))) 1360: 1361: (defun forth-comment-indent () 1362: (save-excursion 1363: (beginning-of-line) 1364: (if (looking-at ":[ \t]*") 1365: (progn 1366: (end-of-line) 1367: (skip-chars-backward " \t\n") 1368: (1+ (current-column))) 1369: comment-column))) 1370: 1371: 1372: ;; Forth commands 1373: 1374: (defun forth-remove-tracers () 1375: "Remove tracers of the form `~~ '. Queries the user for each occurrence." 1376: (interactive) 1377: (query-replace-regexp "\$~~ \\| ~~$\$" "" nil)) 1378: 1379: (define-key forth-mode-map "\C-x\C-e" 'compile) 1380: (define-key forth-mode-map "\C-x\C-n" 'next-error) 1381: (require 'compile) 1382: 1383: (defvar forth-compile-command "gforth ") 1384: ;(defvar forth-compilation-window-percent-height 30) 1385: 1386: (defun forth-split () 1387: (interactive) 1388: (forth-split-1 "*forth*")) 1389: 1390: (defun forth-split-1 (buffer) 1391: (if (not (eq (window-buffer) (get-buffer buffer))) 1392: (progn 1393: (delete-other-windows) 1394: (split-window-vertically 1395: (/ (frame-height) 2)) 1396: (other-window 1) 1397: (switch-to-buffer buffer) 1398: (goto-char (point-max)) 1399: (other-window 1)))) 1400: 1401: ;;; Forth menu 1402: ;;; Mikael Karlsson <qramika@eras70.ericsson.se> 1403: 1404: ;; (dk) code commented out due to complaints of XEmacs users. After 1405: ;; all, there's imenu/speedbar, which uses much smarter scanning 1406: ;; rules. 1407: 1408: ;; (cond ((string-match "XEmacs\\|Lucid" emacs-version) 1409: ;; (require 'func-menu) 1410: 1411: ;; (defconst fume-function-name-regexp-forth 1412: ;; "^\$:\$[ \t]+\$[^ \t]*\$" 1413: ;; "Expression to get word definitions in Forth.") 1414: 1415: ;; (setq fume-function-name-regexp-alist 1416: ;; (append '((forth-mode . fume-function-name-regexp-forth) 1417: ;; ) fume-function-name-regexp-alist)) 1418: 1419: ;; ;; Find next forth word in the buffer 1420: ;; (defun fume-find-next-forth-function-name (buffer) 1421: ;; "Searches for the next forth word in BUFFER." 1422: ;; (set-buffer buffer) 1423: ;; (if (re-search-forward fume-function-name-regexp nil t) 1424: ;; (let ((beg (match-beginning 2)) 1425: ;; (end (match-end 2))) 1426: ;; (cons (buffer-substring beg end) beg)))) 1427: 1428: ;; (setq fume-find-function-name-method-alist 1429: ;; (append '((forth-mode . fume-find-next-forth-function-name)))) 1430: 1431: ;; )) 1432: ;;; End Forth menu 1433: 1434: ;;; File folding of forth-files 1435: ;;; uses outline 1436: ;;; Toggle activation with M-x fold-f (when editing a forth-file) 1437: ;;; Use f9 to expand, f10 to hide, Or the menubar in xemacs 1438: ;;; 1439: ;;; Works most of the times but loses sync with the cursor occasionally 1440: ;;; Could be improved by also folding on comments 1441: 1442: ;; (dk) This code needs a rewrite; just too ugly and doesn't use the 1443: ;; newer and smarter scanning rules of `imenu'. Who needs it anyway?? 1444: 1445: ;; (require 'outline) 1446: 1447: ;; (defun f-outline-level () 1448: ;; (cond ((looking-at "\\`\\\\") 1449: ;; 0) 1450: ;; ((looking-at "\\\\ SEC") 1451: ;; 0) 1452: ;; ((looking-at "\\\\ \\\\ .*") 1453: ;; 0) 1454: ;; ((looking-at "\\\\ DEFS") 1455: ;; 1) 1456: ;; ((looking-at "\\/\\* ") 1457: ;; 1) 1458: ;; ((looking-at ": .*") 1459: ;; 1) 1460: ;; ((looking-at "\\\\G") 1461: ;; 2) 1462: ;; ((looking-at "[ \t]+\\\\") 1463: ;; 3))) 1464: 1465: ;; (defun fold-f () 1466: ;; (interactive) 1467: ;; (add-hook 'outline-minor-mode-hook 'hide-body) 1468: 1469: ;; ; outline mode header start, i.e. find word definitions 1470: ;; ;;; (setq outline-regexp "^\$:\$[ \t]+\$[^ \t]*\$") 1471: ;; (setq outline-regexp "\\`\\\\\\|:\\|\\\\ SEC\\|\\\\G\\|[ \t]+\\\\\\|\\\\ DEFS\\|\\/\\*\\|\\\\ \\\\ .*") 1472: ;; (setq outline-level 'f-outline-level) 1473: 1474: ;; (outline-minor-mode) 1475: ;; (define-key outline-minor-mode-map '(shift up) 'hide-sublevels) 1476: ;; (define-key outline-minor-mode-map '(shift right) 'show-children) 1477: ;; (define-key outline-minor-mode-map '(shift left) 'hide-subtree) 1478: ;; (define-key outline-minor-mode-map '(shift down) 'show-subtree)) 1479: 1480: 1481: ;;(define-key global-map '(shift up) 'fold-f) 1482: 1483: ;;; end file folding 1484: 1485: ;;; func-menu is a package that scans your source file for function definitions 1486: ;;; and makes a menubar entry that lets you jump to any particular function 1487: ;;; definition by selecting it from the menu. The following code turns this on 1488: ;;; for all of the recognized languages. Scanning the buffer takes some time, 1489: ;;; but not much. 1490: ;;; 1491: ;; (cond ((string-match "XEmacs\\|Lucid" emacs-version) 1492: ;; (require 'func-menu) 1493: ;; ;; (define-key global-map 'f8 'function-menu) 1494: ;; (add-hook 'find-fible-hooks 'fume-add-menubar-entry) 1495: ;; ; (define-key global-map "\C-cg" 'fume-prompt-function-goto) 1496: ;; ; (define-key global-map '(shift button3) 'mouse-function-menu) 1497: ;; )) 1498: 1499: ;;; 1500: ;;; Inferior Forth interpreter 1501: ;;; -- mostly copied from `cmuscheme.el' of Emacs 21.2 1502: ;;; 1503: 1504: (eval-and-compile (forth-require 'comint)) 1505: 1506: (when (memq 'comint features) 1507: 1508: (defvar forth-program-name "gforth" 1509: "*Program invoked by the `run-forth' command, including program arguments") 1510: 1511: (defcustom inferior-forth-mode-hook nil 1512: "*Hook for customising inferior-forth-mode." 1513: :type 'hook 1514: :group 'forth) 1515: 1516: (defvar inferior-forth-mode-map 1517: (let ((m (make-sparse-keymap))) 1518: (define-key m "\r" 'comint-send-input) 1519: (define-key m "\M-\C-x" 'forth-send-paragraph-and-go) 1520: (define-key m "\C-c\C-l" 'forth-load-file) 1521: m)) 1522: ;; Install the process communication commands in the forth-mode keymap. 1523: (define-key forth-mode-map "\e\C-m" 'forth-send-paragraph-and-go) 1524: (define-key forth-mode-map "\eo" 'forth-send-buffer-and-go) 1525: 1526: (define-key forth-mode-map "\M-\C-x" 'forth-send-paragraph-and-go) 1527: (define-key forth-mode-map "\C-c\C-r" 'forth-send-region) 1528: (define-key forth-mode-map "\C-c\M-r" 'forth-send-region-and-go) 1529: (define-key forth-mode-map "\C-c\C-z" 'forth-switch-to-interactive) 1530: (define-key forth-mode-map "\C-c\C-l" 'forth-load-file) 1531: 1532: (defvar forth-process-buffer) 1533: 1534: (define-derived-mode inferior-forth-mode comint-mode "Inferior Forth" 1535: "Major mode for interacting with an inferior Forth process. 1536: 1537: The following commands are available: 1538: \\{inferior-forth-mode-map} 1539: 1540: A Forth process can be fired up with M-x run-forth. 1541: 1542: Customisation: Entry to this mode runs the hooks on comint-mode-hook and 1543: inferior-forth-mode-hook (in that order). 1544: 1545: You can send text to the inferior Forth process from other buffers containing 1546: Forth source. 1547: forth-switch-to-interactive switches the current buffer to the Forth 1548: process buffer. 1549: forth-send-paragraph sends the current paragraph to the Forth process. 1550: forth-send-region sends the current region to the Forth process. 1551: forth-send-buffer sends the current buffer to the Forth process. 1552: 1553: forth-send-paragraph-and-go, forth-send-region-and-go, 1554: forth-send-buffer-and-go switch to the Forth process buffer after 1555: sending their text. 1556: For information on running multiple processes in multiple buffers, see 1557: documentation for variable `forth-process-buffer'. 1558: 1559: Commands: 1560: Return after the end of the process' output sends the text from the 1561: end of process to point. If you accidentally suspend your process, use 1562: \\[comint-continue-subjob] to continue it. " 1563: ;; Customise in inferior-forth-mode-hook 1564: (setq comint-prompt-regexp "^") 1565: (setq mode-line-process '(":%s"))) 1566: 1567: (defun forth-args-to-list (string) 1568: (let ((where (string-match "[ \t]" string))) 1569: (cond ((null where) (list string)) 1570: ((not (= where 0)) 1571: (cons (substring string 0 where) 1572: (forth-args-to-list (substring string (+ 1 where) 1573: (length string))))) 1574: (t (let ((pos (string-match "[^ \t]" string))) 1575: (if (null pos) 1576: nil 1577: (forth-args-to-list (substring string pos 1578: (length string))))))))) 1579: 1580: ;;;###autoload 1581: (defun run-forth (cmd) 1582: "Run an inferior Forth process, input and output via buffer *forth*. 1583: If there is a process already running in `*forth*', switch to that buffer. 1584: With argument, allows you to edit the command line (default is value 1585: of `forth-program-name'). Runs the hooks `inferior-forth-mode-hook' 1586: \(after the `comint-mode-hook' is run). 1587: \(Type \\[describe-mode] in the process buffer for a list of commands.)" 1588: 1589: (interactive (list (if current-prefix-arg 1590: (read-string "Run Forth: " forth-program-name) 1591: forth-program-name))) 1592: (if (not (comint-check-proc "*forth*")) 1593: (let ((cmdlist (forth-args-to-list cmd))) 1594: (set-buffer (apply 'make-comint "forth" (car cmdlist) 1595: nil (cdr cmdlist))) 1596: (inferior-forth-mode))) 1597: (setq forth-program-name cmd) 1598: (setq forth-process-buffer "*forth*") 1599: (pop-to-buffer "*forth*")) 1600: 1601: (defun forth-send-region (start end) 1602: "Send the current region to the inferior Forth process." 1603: (interactive "r") 1604: (comint-send-region (forth-proc) start end) 1605: (comint-send-string (forth-proc) "\n")) 1606: 1607: (defun forth-end-of-paragraph () 1608: (if (looking-at "[\t\n ]+") (skip-chars-backward "\t\n ")) 1609: (if (not (re-search-forward "\n[ \t]*\n" nil t)) 1610: (goto-char (point-max)))) 1611: 1612: (defun forth-send-paragraph () 1613: "Send the current or the previous paragraph to the Forth process" 1614: (interactive) 1615: (let (end) 1616: (save-excursion 1617: (forth-end-of-paragraph) 1618: (skip-chars-backward "\t\n ") 1619: (setq end (point)) 1620: (if (null (re-search-backward "\n[ \t]*\n" nil t)) 1621: (goto-char (point-min))) 1622: (skip-chars-forward "\t\n ") 1623: (forth-send-region (point) end)))) 1624: 1625: (defun forth-send-paragraph-and-go () 1626: "Send the current or the previous paragraph to the Forth process. 1627: Then switch to the process buffer." 1628: (interactive) 1629: (forth-send-paragraph) 1630: (forth-switch-to-interactive t)) 1631: 1632: (defun forth-send-buffer () 1633: "Send the current buffer to the Forth process." 1634: (interactive) 1635: (if (eq (current-buffer) forth-process-buffer) 1636: (error "Not allowed to send this buffer's contents to Forth")) 1637: (forth-send-region (point-min) (point-max))) 1638: 1639: (defun forth-send-buffer-and-go () 1640: "Send the current buffer to the Forth process. 1641: Then switch to the process buffer." 1642: (interactive) 1643: (forth-send-buffer) 1644: (forth-switch-to-interactive t)) 1645: 1646: 1647: (defun forth-switch-to-interactive (eob-p) 1648: "Switch to the Forth process buffer. 1649: With argument, position cursor at end of buffer." 1650: (interactive "P") 1651: (if (get-buffer forth-process-buffer) 1652: (pop-to-buffer forth-process-buffer) 1653: (error "No current process buffer. See variable `forth-process-buffer'")) 1654: (cond (eob-p 1655: (push-mark) 1656: (goto-char (point-max))))) 1657: 1658: (defun forth-send-region-and-go (my-start end) 1659: "Send the current region to the inferior Forth process. 1660: Then switch to the process buffer." 1661: (interactive "r") 1662: (forth-send-region my-start end) 1663: (forth-switch-to-interactive t)) 1664: 1665: (defcustom forth-source-modes '(forth-mode forth-block-mode) 1666: "*Used to determine if a buffer contains Forth source code. 1667: If it's loaded into a buffer that is in one of these major modes, it's 1668: considered a Forth source file by `forth-load-file' and `forth-compile-file'. 1669: Used by these commands to determine defaults." 1670: :type '(repeat function) 1671: :group 'forth) 1672: 1673: (defvar forth-prev-l/c-dir/file nil 1674: "Caches the last (directory . file) pair. 1675: Caches the last pair used in the last `forth-load-file' or 1676: `forth-compile-file' command. Used for determining the default in the 1677: next one.") 1678: 1679: (defun forth-load-file (file-name) 1680: "Load a Forth file FILE-NAME into the inferior Forth process." 1681: (interactive (comint-get-source "Load Forth file: " forth-prev-l/c-dir/file 1682: forth-source-modes t)) ; T because LOAD 1683: ; needs an exact name 1684: (comint-check-source file-name) ; Check to see if buffer needs saved. 1685: (setq forth-prev-l/c-dir/file (cons (file-name-directory file-name) 1686: (file-name-nondirectory file-name))) 1687: (comint-send-string (forth-proc) 1688: (concat "s\" " file-name "\" included\n"))) 1689: 1690: 1691: (defvar forth-process-buffer nil "*The current Forth process buffer. 1692: 1693: See `scheme-buffer' for an explanation on how to run multiple Forth 1694: processes.") 1695: 1696: (defun forth-proc () 1697: "Return the current Forth process. See variable `forth-process-buffer'." 1698: (let ((proc (get-buffer-process (if (eq major-mode 'inferior-forth-mode) 1699: (current-buffer) 1700: forth-process-buffer)))) 1701: (or proc 1702: (error "No current process. See variable `forth-process-buffer'")))) 1703: ) ; (memq 'comint features) 1704: 1705: (provide 'forth-mode) 1706: 1707: ;;; gforth.el ends here