Annotation of gforth/gforth.el, revision 1.24

1.17      anton       1: ;; Forth mode for Emacs
                      2: ;; This file is part of GForth.
1.1       anton       3: ;; Changes by anton
1.6       anton       4: ;; This is a variant of forth.el that came with TILE.
1.5       anton       5: ;; I left most of this stuff untouched and made just a few changes for 
1.6       anton       6: ;; the things I use (mainly indentation and syntax tables).
                      7: ;; So there is still a lot of work to do to adapt this to gforth.
1.1       anton       8: 
1.17      anton       9: ;; GForth is distributed in the hope that it will be useful,
1.1       anton      10: ;; but WITHOUT ANY WARRANTY.  No author or distributor
                     11: ;; accepts responsibility to anyone for the consequences of using it
                     12: ;; or for whether it serves any particular purpose or works at all,
                     13: ;; unless he says so in writing.  Refer to the GNU Emacs General Public
                     14: ;; License for full details.
                     15: 
                     16: ;; Everyone is granted permission to copy, modify and redistribute
                     17: ;; GNU Emacs, but only under the conditions described in the
                     18: ;; GNU Emacs General Public License.   A copy of this license is
1.17      anton      19: ;; supposed to have been given to you along with Gforth so you
1.1       anton      20: ;; can know your rights and responsibilities.  It should be in a
                     21: ;; file named COPYING.  Among other things, the copyright notice
                     22: ;; and this notice must be preserved on all copies.
                     23: 
                     24: ;;-------------------------------------------------------------------
                     25: ;; A Forth indentation, documentation search and interaction library
                     26: ;;-------------------------------------------------------------------
                     27: ;;
                     28: ;; Written by Goran Rydqvist, gorry@ida.liu.se, Summer 1988
                     29: ;; Started:    16 July 88
                     30: ;; Version:    2.10
                     31: ;; Last update:        5 December 1989 by Mikael Patel, mip@ida.liu.se
                     32: ;; Last update:        25 June 1990 by Goran Rydqvist, gorry@ida.liu.se
                     33: ;;
                     34: ;; Documentation: See forth-mode (^HF forth-mode)
                     35: ;;-------------------------------------------------------------------
                     36: 
                     37: 
                     38: (defvar forth-positives
1.23      anton      39:   " : :noname code interpretation: ;code does> begin do ?do +do -do u+do u-do while if ?dup-if ?dup-0=-if else case of struct [if] [ifdef] [ifundef] [else] with public: private: class "
1.1       anton      40:   "Contains all words which will cause the indent-level to be incremented
                     41: on the next line.
                     42: OBS! All words in forth-positives must be surrounded by spaces.")
                     43: 
                     44: (defvar forth-negatives
1.21      pazsan     45:   " ; end-code ;code does> until repeat while +loop loop -loop s+loop else then endif again endcase endof end-struct [then] [else] [endif] endwith class; how: "
1.1       anton      46:   "Contains all words which will cause the indent-level to be decremented
                     47: on the current line.
                     48: OBS! All words in forth-negatives must be surrounded by spaces.")
                     49: 
                     50: (defvar forth-zeroes
1.21      pazsan     51:   " : :noname code interpretation: public: private: how: class class; "
1.1       anton      52:   "Contains all words which causes the indent to go to zero")
                     53: 
1.21      pazsan     54: (setq forth-zero 0)
                     55: 
                     56: (defvar forth-zup
                     57:   " how: "
                     58:   "Contains all words which causes zero indent level to change")
                     59: 
                     60: (defvar forth-zdown
                     61:   " class; how: class public: private: "
                     62:   "Contains all words which causes zero indent level to change")
                     63: 
1.6       anton      64: (defvar forth-prefixes
                     65:   " postpone [compile] ['] [char] "
                     66:   "words that prefix and escape other words")
                     67: 
1.1       anton      68: (defvar forth-mode-abbrev-table nil
                     69:   "Abbrev table in use in Forth-mode buffers.")
                     70: 
                     71: (define-abbrev-table 'forth-mode-abbrev-table ())
                     72: 
                     73: (defvar forth-mode-map nil
                     74:   "Keymap used in Forth mode.")
                     75: 
                     76: (if (not forth-mode-map)
                     77:     (setq forth-mode-map (make-sparse-keymap)))
                     78: 
1.9       anton      79: ;(define-key forth-mode-map "\M-\C-x" 'compile)
1.7       anton      80: (define-key forth-mode-map "\C-x\\" 'comment-region)
                     81: (define-key forth-mode-map "\C-x~" 'forth-remove-tracers)
1.1       anton      82: (define-key forth-mode-map "\e\C-m" 'forth-send-paragraph)
                     83: (define-key forth-mode-map "\eo" 'forth-send-buffer)
                     84: (define-key forth-mode-map "\C-x\C-m" 'forth-split)
                     85: (define-key forth-mode-map "\e " 'forth-reload)
                     86: (define-key forth-mode-map "\t" 'forth-indent-command)
                     87: (define-key forth-mode-map "\C-m" 'reindent-then-newline-and-indent)
1.7       anton      88: (define-key forth-mode-map "\M-q" 'forth-fill-paragraph)
1.13      pazsan     89: (define-key forth-mode-map "\e." 'forth-find-tag)
1.1       anton      90: 
1.22      anton      91: (load "etags")
1.13      pazsan     92: 
                     93: (defun forth-find-tag (tagname &optional next-p regexp-p)
                     94:   (interactive (find-tag-interactive "Find tag: "))
                     95:   (switch-to-buffer
                     96:    (find-tag-noselect (concat " " tagname " ") next-p regexp-p)))
                     97: 
1.1       anton      98: (defvar forth-mode-syntax-table nil
                     99:   "Syntax table in use in Forth-mode buffers.")
                    100: 
                    101: (if (not forth-mode-syntax-table)
                    102:     (progn
                    103:       (setq forth-mode-syntax-table (make-syntax-table))
1.6       anton     104:       (let ((char 0))
                    105:        (while (< char ?!)
                    106:          (modify-syntax-entry char " " forth-mode-syntax-table)
                    107:          (setq char (1+ char)))
                    108:        (while (< char 256)
                    109:          (modify-syntax-entry char "w" forth-mode-syntax-table)
                    110:          (setq char (1+ char))))
                    111:       (modify-syntax-entry ?\" "\"" forth-mode-syntax-table)
                    112:       (modify-syntax-entry ?\\ "<" forth-mode-syntax-table)
                    113:       (modify-syntax-entry ?\n ">" forth-mode-syntax-table)
                    114:       ))
                    115: ;I do not define '(' and ')' as comment delimiters, because emacs
                    116: ;only supports one comment syntax (and a hack to accomodate C++); I
                    117: ;use '\' for natural language comments and '(' for formal comments
                    118: ;like stack comments, so for me it's better to have emacs treat '\'
1.13      pazsan    119: ;comments as comments. If you want it different, make the appropriate
1.6       anton     120: ;changes (best in your .emacs file).
                    121: ;
                    122: ;Hmm, the C++ hack could be used to support both comment syntaxes: we
                    123: ;can have different comment styles, if both comments start with the
                    124: ;same character. we could use ' ' as first and '(' and '\' as second
                    125: ;character. However this would fail for G\ comments.
1.1       anton     126: 
                    127: (defconst forth-indent-level 4
                    128:   "Indentation of Forth statements.")
                    129: 
                    130: (defun forth-mode-variables ()
                    131:   (set-syntax-table forth-mode-syntax-table)
                    132:   (setq local-abbrev-table forth-mode-abbrev-table)
                    133:   (make-local-variable 'paragraph-start)
                    134:   (setq paragraph-start (concat "^$\\|" page-delimiter))
                    135:   (make-local-variable 'paragraph-separate)
                    136:   (setq paragraph-separate paragraph-start)
                    137:   (make-local-variable 'indent-line-function)
                    138:   (setq indent-line-function 'forth-indent-line)
1.6       anton     139: ;  (make-local-variable 'require-final-newline)
                    140: ;  (setq require-final-newline t)
1.1       anton     141:   (make-local-variable 'comment-start)
1.3       anton     142:   (setq comment-start "\\ ")
                    143:   ;(make-local-variable 'comment-end)
                    144:   ;(setq comment-end " )")
1.1       anton     145:   (make-local-variable 'comment-column)
                    146:   (setq comment-column 40)
                    147:   (make-local-variable 'comment-start-skip)
1.3       anton     148:   (setq comment-start-skip "\\ ")
1.1       anton     149:   (make-local-variable 'comment-indent-hook)
                    150:   (setq comment-indent-hook 'forth-comment-indent)
                    151:   (make-local-variable 'parse-sexp-ignore-comments)
                    152:   (setq parse-sexp-ignore-comments t))
                    153:   
1.2       anton     154: ;;;###autoload
1.1       anton     155: (defun forth-mode ()
                    156:   "
                    157: Major mode for editing Forth code. Tab indents for Forth code. Comments
1.9       anton     158: are delimited with \\ and newline. Paragraphs are separated by blank lines
1.23      anton     159: only.
1.1       anton     160: \\{forth-mode-map}
                    161:  Forth-split
                    162:     Positions the current buffer on top and a forth-interaction window
                    163:     below. The window size is controlled by the forth-percent-height
                    164:     variable (see below).
                    165:  Forth-reload
                    166:     Reloads the forth library and restarts the forth process.
                    167:  Forth-send-buffer
                    168:     Sends the current buffer, in text representation, as input to the
                    169:     forth process.
                    170:  Forth-send-paragraph
                    171:     Sends the previous or the current paragraph to the forth-process.
                    172:     Note that the cursor only need to be with in the paragraph to be sent.
                    173: forth-documentation
                    174:     Search for documentation of forward adjacent to cursor. Note! To use
                    175:     this mode you have to add a line, to your .emacs file, defining the
                    176:     directories to search through for documentation files (se variable
                    177:     forth-help-load-path below) e.g. (setq forth-help-load-path '(nil)).
                    178: 
                    179: Variables controlling interaction and startup
                    180:  forth-percent-height
                    181:     Tells split how high to make the edit portion, in percent of the
                    182:     current screen height.
                    183:  forth-program-name
                    184:     Tells the library which program name to execute in the interation
                    185:     window.
                    186: 
                    187: Variables controlling indentation style:
                    188:  forth-positives
                    189:     A string containing all words which causes the indent-level of the
                    190:     following line to be incremented.
                    191:     OBS! Each word must be surronded by spaces.
                    192:  forth-negatives
                    193:     A string containing all words which causes the indentation of the
                    194:     current line to be decremented, if the word begin the line. These
                    195:     words also has a cancelling effect on the indent-level of the
                    196:     following line, independent of position.
                    197:     OBS! Each word must be surronded by spaces.
                    198:  forth-zeroes
                    199:     A string containing all words which causes the indentation of the
                    200:     current line to go to zero, if the word begin the line.
                    201:     OBS! Each word must be surronded by spaces.
                    202:  forth-indent-level
                    203:     Indentation increment/decrement of Forth statements.
                    204: 
                    205:  Note! A word which decrements the indentation of the current line, may
                    206:     also be mentioned in forth-positives to cause the indentation to
                    207:     resume the previous level.
                    208: 
                    209: Variables controling documentation search
                    210:  forth-help-load-path
                    211:     List of directories to search through to find *.doc
                    212:     (forth-help-file-suffix) files. Nil means current default directory.
                    213:     The specified directories must contain at least one .doc file. If it
                    214:     does not and you still want the load-path to scan that directory, create
                    215:     an empty file dummy.doc.
                    216:  forth-help-file-suffix
                    217:     The file names to search for in each directory specified by
                    218:     forth-help-load-path. Defaulted to '*.doc'. 
                    219: "
                    220:   (interactive)
                    221:   (kill-all-local-variables)
                    222:   (use-local-map forth-mode-map)
                    223:   (setq mode-name "Forth")
                    224:   (setq major-mode 'forth-mode)
                    225:   (forth-mode-variables)
                    226: ;  (if (not (forth-process-running-p))
                    227: ;      (run-forth forth-program-name))
                    228:   (run-hooks 'forth-mode-hook))
                    229: 
1.6       anton     230: (setq forth-mode-hook
1.9       anton     231:       '(lambda () 
                    232:         (make-local-variable 'compile-command)
                    233:         (setq compile-command "gforth ")))
1.6       anton     234: 
1.7       anton     235: (defun forth-fill-paragraph () 
                    236:   "Fill comments (starting with '\'; do not fill code (block style
                    237: programmers who tend to fill code won't use emacs anyway:-)."
1.9       anton     238:   ; Currently only comments at the start of the line are filled.
                    239:   ; Something like lisp-fill-paragraph may be better.  We cannot use
                    240:   ; fill-paragraph, because it removes the \ from the first comment
                    241:   ; line. Therefore we have to look for the first line of the comment
                    242:   ; and use fill-region.
1.7       anton     243:   (interactive)
                    244:   (save-excursion
                    245:     (beginning-of-line)
1.9       anton     246:     (while (and
                    247:             (= (forward-line -1) 0)
1.14      anton     248:             (looking-at "[ \t]*\\\\g?[ \t]+")))
                    249:     (if (not (looking-at "[ \t]*\\\\g?[ \t]+"))
1.9       anton     250:        (forward-line 1))
                    251:     (let ((from (point))
                    252:          (to (save-excursion (forward-paragraph) (point))))
1.14      anton     253:       (if (looking-at "[ \t]*\\\\g?[ \t]+")
1.9       anton     254:          (progn (goto-char (match-end 0))
                    255:                 (set-fill-prefix)
                    256:                 (fill-region from to nil))))))
1.7       anton     257: 
1.1       anton     258: (defun forth-comment-indent ()
                    259:   (save-excursion
                    260:     (beginning-of-line)
                    261:     (if (looking-at ":[ \t]*")
                    262:        (progn
                    263:          (end-of-line)
                    264:          (skip-chars-backward " \t\n")
                    265:          (1+ (current-column)))
                    266:       comment-column)))
                    267: 
                    268: (defun forth-current-indentation ()
                    269:   (save-excursion
                    270:     (beginning-of-line)
                    271:     (back-to-indentation)
                    272:     (current-column)))
                    273: 
                    274: (defun forth-delete-indentation ()
                    275:   (let ((b nil) (m nil))
                    276:     (save-excursion
                    277:       (beginning-of-line)
                    278:       (setq b (point))
                    279:       (back-to-indentation)
                    280:       (setq m (point)))
                    281:     (delete-region b m)))
                    282: 
                    283: (defun forth-indent-line (&optional flag)
                    284:   "Correct indentation of the current Forth line."
                    285:   (let ((x (forth-calculate-indent)))
                    286:     (forth-indent-to x)))
                    287:   
                    288: (defun forth-indent-command ()
                    289:   (interactive)
                    290:   (forth-indent-line t))
                    291: 
                    292: (defun forth-indent-to (x)
                    293:   (let ((p nil))
                    294:     (setq p (- (current-column) (forth-current-indentation)))
                    295:     (forth-delete-indentation)
                    296:     (beginning-of-line)
                    297:     (indent-to x)
                    298:     (if (> p 0) (forward-char p))))
                    299: 
                    300: ;;Calculate indent
                    301: (defun forth-calculate-indent ()
                    302:   (let ((w1 nil) (indent 0) (centre 0))
                    303:     (save-excursion
                    304:       (beginning-of-line)
                    305:       (skip-chars-backward " \t\n")
                    306:       (beginning-of-line)
                    307:       (back-to-indentation)
                    308:       (setq indent (current-column))
                    309:       (setq centre indent)
                    310:       (setq indent (+ indent (forth-sum-line-indentation))))
                    311:     (save-excursion
                    312:       (beginning-of-line)
                    313:       (back-to-indentation)
                    314:       (let ((p (point)))
                    315:        (skip-chars-forward "^ \t\n")
                    316:        (setq w1 (buffer-substring p (point)))))
                    317:     (if (> (- indent centre) forth-indent-level)
                    318:        (setq indent (+ centre forth-indent-level)))
                    319:     (if (> (- centre indent) forth-indent-level)
                    320:        (setq indent (- centre forth-indent-level)))
                    321:     (if (< indent 0) (setq indent 0))
                    322:     (setq indent (- indent
                    323:                    (if (string-match 
                    324:                         (regexp-quote (concat " " w1 " "))
                    325:                         forth-negatives)
                    326:                        forth-indent-level 0)))
1.21      pazsan    327:     (if (string-match (regexp-quote (concat " " w1 " ")) forth-zdown)
                    328:        (setq forth-zero 0))
1.1       anton     329:     (if (string-match (regexp-quote (concat " " w1 " ")) forth-zeroes)
1.21      pazsan    330:        (setq indent forth-zero))
                    331:     (if (string-match (regexp-quote (concat " " w1 " ")) forth-zup)
                    332:        (setq forth-zero 4))
1.1       anton     333:     indent))
                    334: 
                    335: (defun forth-sum-line-indentation ()
                    336:   "Add upp the positive and negative weights of all words on the current line."
                    337:   (let ((b (point)) (e nil) (sum 0) (w nil) (t1 nil) (t2 nil) (first t))
                    338:     (end-of-line) (setq e (point))
                    339:     (goto-char b)
                    340:     (while (< (point) e)
                    341:       (setq w (forth-next-word))
                    342:       (setq t1 (string-match (regexp-quote (concat " " w " "))
                    343:                             forth-positives))
                    344:       (setq t2 (string-match (regexp-quote (concat " " w " "))
                    345:                             forth-negatives))
                    346:       (if t1
                    347:          (setq sum (+ sum forth-indent-level)))
                    348:       (if (and t2 (not first))
                    349:          (setq sum (- sum forth-indent-level)))
                    350:       (skip-chars-forward " \t")
                    351:       (setq first nil))
                    352:     sum))
                    353: 
                    354: 
                    355: (defun forth-next-word ()
1.6       anton     356:   "Return the next forth-word. Skip anything that the forth-word takes from
                    357: the input stream (comments, arguments, etc.)"
                    358: ;actually, it would be better to use commands based on the
                    359: ;syntax-table or comment-start etc.
1.1       anton     360:   (let ((w1 nil))
                    361:     (while (not w1)
                    362:       (skip-chars-forward " \t\n")
                    363:       (let ((p (point)))
                    364:        (skip-chars-forward "^ \t\n")
                    365:        (setq w1 (buffer-substring p (point))))
                    366:       (cond ((string-match "\"" w1)
                    367:             (progn
1.6       anton     368:               (skip-chars-forward "^\"\n")
                    369:               (forward-char)))
                    370:            ((string-match "\\\\" w1)
                    371:             (progn
                    372:               (end-of-line)
                    373:               ))
                    374:            ((or (equal "(" w1) (equal ".(" w1))
1.1       anton     375:             (progn
1.6       anton     376:               (skip-chars-forward "^)\n")
                    377:               (forward-char)))
                    378:            ((string-match (regexp-quote (concat " " w1 " ")) forth-prefixes)
                    379:             (progn (skip-chars-forward " \t\n")
                    380:                    (skip-chars-forward "^ \t\n")))
1.1       anton     381:            (t nil)))
                    382:     w1))
                    383:       
                    384: 
                    385: ;; Forth commands
                    386: 
1.7       anton     387: (defun forth-remove-tracers ()
                    388:   "Remove tracers of the form `~~ '. Queries the user for each occurrence."
                    389:   (interactive)
1.16      anton     390:   (query-replace-regexp "\\(~~ \\| ~~$\\)" "" nil))
1.7       anton     391: 
1.5       anton     392: (defvar forth-program-name "gforth"
1.1       anton     393:   "*Program invoked by the `run-forth' command.")
                    394: 
                    395: (defvar forth-band-name nil
                    396:   "*Band loaded by the `run-forth' command.")
                    397: 
                    398: (defvar forth-program-arguments nil
                    399:   "*Arguments passed to the Forth program by the `run-forth' command.")
                    400: 
                    401: (defun run-forth (command-line)
                    402:   "Run an inferior Forth process. Output goes to the buffer `*forth*'.
                    403: With argument, asks for a command line. Split up screen and run forth 
                    404: in the lower portion. The current-buffer when called will stay in the
                    405: upper portion of the screen, and all other windows are deleted.
                    406: Call run-forth again to make the *forth* buffer appear in the lower
                    407: part of the screen."
                    408:   (interactive
                    409:    (list (let ((default
                    410:                 (or forth-process-command-line
                    411:                     (forth-default-command-line))))
                    412:           (if current-prefix-arg
                    413:               (read-string "Run Forth: " default)
                    414:               default))))
                    415:   (setq forth-process-command-line command-line)
                    416:   (forth-start-process command-line)
                    417:   (forth-split)
                    418:   (forth-set-runlight forth-runlight:input))
                    419: 
                    420: (defun reset-forth ()
                    421:   "Reset the Forth process."
                    422:   (interactive)
                    423:   (let ((process (get-process forth-program-name)))
                    424:     (cond ((or (not process)
                    425:               (not (eq (process-status process) 'run))
                    426:               (yes-or-no-p
                    427: "The Forth process is running, are you SURE you want to reset it? "))
                    428:           (message "Resetting Forth process...")
                    429:           (forth-reload)
                    430:           (message "Resetting Forth process...done")))))
                    431: 
                    432: (defun forth-default-command-line ()
1.13      pazsan    433:   (concat forth-program-name
1.1       anton     434:          (if forth-program-arguments
                    435:              (concat " " forth-program-arguments)
                    436:              "")))
                    437: 
                    438: ;;;; Internal Variables
                    439: 
                    440: (defvar forth-process-command-line nil
                    441:   "Command used to start the most recent Forth process.")
                    442: 
                    443: (defvar forth-previous-send ""
                    444:   "Most recent expression transmitted to the Forth process.")
                    445: 
                    446: (defvar forth-process-filter-queue '()
                    447:   "Queue used to synchronize filter actions properly.")
                    448: 
                    449: (defvar forth-prompt "ok"
                    450:   "The current forth prompt string.")
                    451: 
                    452: (defvar forth-start-hook nil
                    453:   "If non-nil, a procedure to call when the Forth process is started.
                    454: When called, the current buffer will be the Forth process-buffer.")
                    455: 
                    456: (defvar forth-signal-death-message nil
                    457:   "If non-nil, causes a message to be generated when the Forth process dies.")
                    458: 
1.9       anton     459: (defvar forth-percent-height 50
1.1       anton     460:   "Tells run-forth how high the upper window should be in percent.")
                    461: 
                    462: (defconst forth-runlight:input ?I
                    463:   "The character displayed when the Forth process is waiting for input.")
                    464: 
                    465: (defvar forth-mode-string ""
                    466:   "String displayed in the mode line when the Forth process is running.")
                    467: 
                    468: ;;;; Evaluation Commands
                    469: 
                    470: (defun forth-send-string (&rest strings)
                    471:   "Send the string arguments to the Forth process.
                    472: The strings are concatenated and terminated by a newline."
                    473:   (cond ((forth-process-running-p)
                    474:         (forth-send-string-1 strings))
                    475:        ((yes-or-no-p "The Forth process has died.  Reset it? ")
                    476:         (reset-forth)
                    477:         (goto-char (point-max))
                    478:         (forth-send-string-1 strings))))
                    479: 
                    480: (defun forth-send-string-1 (strings)
                    481:   (let ((string (apply 'concat strings)))
                    482:     (forth-send-string-2 string)))
                    483: 
                    484: (defun forth-send-string-2 (string)
                    485:   (let ((process (get-process forth-program-name)))
                    486:     (if (not (eq (current-buffer) (get-buffer forth-program-name)))
                    487:        (progn
                    488:         (forth-process-filter-output string)
                    489:         (forth-process-filter:finish)))
                    490:     (send-string process (concat string "\n"))
                    491:     (if (eq (current-buffer) (process-buffer process))
                    492:        (set-marker (process-mark process) (point)))))
                    493: 
                    494: 
                    495: (defun forth-send-region (start end)
                    496:   "Send the current region to the Forth process.
                    497: The region is sent terminated by a newline."
                    498:   (interactive "r")
                    499:   (let ((process (get-process forth-program-name)))
                    500:     (if (and process (eq (current-buffer) (process-buffer process)))
                    501:        (progn (goto-char end)
                    502:               (set-marker (process-mark process) end))))
                    503:   (forth-send-string "\n" (buffer-substring start end) "\n"))
                    504: 
                    505: (defun forth-end-of-paragraph ()
                    506:   (if (looking-at "[\t\n ]+") (skip-chars-backward  "\t\n "))
                    507:   (if (not (re-search-forward "\n[ \t]*\n" nil t))
                    508:       (goto-char (point-max))))
                    509: 
                    510: (defun forth-send-paragraph ()
                    511:   "Send the current or the previous paragraph to the Forth process"
                    512:   (interactive)
                    513:   (let (end)
                    514:     (save-excursion
                    515:       (forth-end-of-paragraph)
                    516:       (skip-chars-backward  "\t\n ")
                    517:       (setq end (point))
                    518:       (if (re-search-backward "\n[ \t]*\n" nil t)
                    519:          (setq start (point))
                    520:        (goto-char (point-min)))
                    521:       (skip-chars-forward  "\t\n ")
                    522:       (forth-send-region (point) end))))
                    523:   
                    524: (defun forth-send-buffer ()
                    525:   "Send the current buffer to the Forth process."
                    526:   (interactive)
                    527:   (if (eq (current-buffer) (forth-process-buffer))
                    528:       (error "Not allowed to send this buffer's contents to Forth"))
                    529:   (forth-send-region (point-min) (point-max)))
                    530: 
                    531: 
                    532: ;;;; Basic Process Control
                    533: 
                    534: (defun forth-start-process (command-line)
                    535:   (let ((buffer (get-buffer-create "*forth*")))
                    536:     (let ((process (get-buffer-process buffer)))
                    537:       (save-excursion
                    538:        (set-buffer buffer)
                    539:        (progn (if process (delete-process process))
                    540:               (goto-char (point-max))
                    541:               (setq mode-line-process '(": %s"))
                    542:               (add-to-global-mode-string 'forth-mode-string)
                    543:               (setq process
                    544:                     (apply 'start-process
                    545:                            (cons forth-program-name
                    546:                                  (cons buffer
                    547:                                        (forth-parse-command-line
                    548:                                         command-line)))))
                    549:               (set-marker (process-mark process) (point-max))
                    550:               (forth-process-filter-initialize t)
                    551:               (forth-modeline-initialize)
                    552:               (set-process-sentinel process 'forth-process-sentinel)
                    553:               (set-process-filter process 'forth-process-filter)
                    554:               (run-hooks 'forth-start-hook)))
                    555:     buffer)))
                    556: 
                    557: (defun forth-parse-command-line (string)
                    558:   (setq string (substitute-in-file-name string))
                    559:   (let ((start 0)
                    560:        (result '()))
                    561:     (while start
                    562:       (let ((index (string-match "[ \t]" string start)))
                    563:        (setq start
                    564:              (cond ((not index)
                    565:                     (setq result
                    566:                           (cons (substring string start)
                    567:                                 result))
                    568:                     nil)
                    569:                    ((= index start)
                    570:                     (string-match "[^ \t]" string start))
                    571:                    (t
                    572:                     (setq result
                    573:                           (cons (substring string start index)
                    574:                                 result))
                    575:                     (1+ index))))))
                    576:     (nreverse result)))
                    577: 
                    578: 
                    579: (defun forth-process-running-p ()
                    580:   "True iff there is a Forth process whose status is `run'."
                    581:   (let ((process (get-process forth-program-name)))
                    582:     (and process
                    583:         (eq (process-status process) 'run))))
                    584: 
                    585: (defun forth-process-buffer ()
                    586:   (let ((process (get-process forth-program-name)))
                    587:     (and process (process-buffer process))))
                    588: 
                    589: ;;;; Process Filter
                    590: 
                    591: (defun forth-process-sentinel (proc reason)
                    592:   (let ((inhibit-quit nil))
                    593:     (forth-process-filter-initialize (eq reason 'run))
                    594:     (if (eq reason 'run)
                    595:        (forth-modeline-initialize)
                    596:        (setq forth-mode-string "")))
                    597:   (if (and (not (memq reason '(run stop)))
                    598:           forth-signal-death-message)
                    599:       (progn (beep)
                    600:             (message
                    601: "The Forth process has died!  Do M-x reset-forth to restart it"))))
                    602: 
                    603: (defun forth-process-filter-initialize (running-p)
                    604:   (setq forth-process-filter-queue (cons '() '()))
                    605:   (setq forth-prompt "ok"))
                    606: 
                    607: 
                    608: (defun forth-process-filter (proc string)
                    609:   (forth-process-filter-output string)
                    610:   (forth-process-filter:finish))
                    611: 
                    612: (defun forth-process-filter:enqueue (action)
                    613:   (let ((next (cons action '())))
                    614:     (if (cdr forth-process-filter-queue)
                    615:        (setcdr (cdr forth-process-filter-queue) next)
                    616:        (setcar forth-process-filter-queue next))
                    617:     (setcdr forth-process-filter-queue next)))
                    618: 
                    619: (defun forth-process-filter:finish ()
                    620:   (while (car forth-process-filter-queue)
                    621:     (let ((next (car forth-process-filter-queue)))
                    622:       (setcar forth-process-filter-queue (cdr next))
                    623:       (if (not (cdr next))
                    624:          (setcdr forth-process-filter-queue '()))
                    625:       (apply (car (car next)) (cdr (car next))))))
                    626: 
                    627: ;;;; Process Filter Output
                    628: 
                    629: (defun forth-process-filter-output (&rest args)
                    630:   (if (not (and args
                    631:                (null (cdr args))
                    632:                (stringp (car args))
                    633:                (string-equal "" (car args))))
                    634:       (forth-process-filter:enqueue
                    635:        (cons 'forth-process-filter-output-1 args))))
                    636: 
                    637: (defun forth-process-filter-output-1 (&rest args)
                    638:   (save-excursion
                    639:     (forth-goto-output-point)
                    640:     (apply 'insert-before-markers args)))
                    641: 
                    642: (defun forth-guarantee-newlines (n)
                    643:   (save-excursion
                    644:     (forth-goto-output-point)
                    645:     (let ((stop nil))
                    646:       (while (and (not stop)
                    647:                  (bolp))
                    648:        (setq n (1- n))
                    649:        (if (bobp)
                    650:            (setq stop t)
                    651:          (backward-char))))
                    652:     (forth-goto-output-point)
                    653:     (while (> n 0)
                    654:       (insert-before-markers ?\n)
                    655:       (setq n (1- n)))))
                    656: 
                    657: (defun forth-goto-output-point ()
                    658:   (let ((process (get-process forth-program-name)))
                    659:     (set-buffer (process-buffer process))
                    660:     (goto-char (process-mark process))))
                    661: 
                    662: (defun forth-modeline-initialize ()
                    663:   (setq forth-mode-string "  "))
                    664: 
                    665: (defun forth-set-runlight (runlight)
                    666:   (aset forth-mode-string 0 runlight)
                    667:   (forth-modeline-redisplay))
                    668: 
                    669: (defun forth-modeline-redisplay ()
                    670:   (save-excursion (set-buffer (other-buffer)))
                    671:   (set-buffer-modified-p (buffer-modified-p))
                    672:   (sit-for 0))
                    673: 
                    674: ;;;; Process Filter Operations
                    675: 
                    676: (defun add-to-global-mode-string (x)
                    677:   (cond ((null global-mode-string)
                    678:         (setq global-mode-string (list "" x " ")))
                    679:        ((not (memq x global-mode-string))
                    680:         (setq global-mode-string
                    681:               (cons ""
                    682:                     (cons x
                    683:                           (cons " "
                    684:                                 (if (equal "" (car global-mode-string))
                    685:                                     (cdr global-mode-string)
                    686:                                     global-mode-string))))))))
                    687: 
                    688: 
                    689: ;; Misc
                    690: 
                    691: (setq auto-mode-alist (append auto-mode-alist
1.4       pazsan    692:                                '(("\\.fs$" . forth-mode))))
1.1       anton     693: 
                    694: (defun forth-split ()
                    695:   (interactive)
                    696:   (forth-split-1 "*forth*"))
                    697: 
                    698: (defun forth-split-1 (buffer)
                    699:   (if (not (eq (window-buffer) (get-buffer buffer)))
                    700:       (progn
                    701:        (delete-other-windows)
                    702:        (split-window-vertically
                    703:         (/ (* (screen-height) forth-percent-height) 100))
                    704:        (other-window 1)
                    705:        (switch-to-buffer buffer)
                    706:        (goto-char (point-max))
                    707:        (other-window 1))))
                    708:     
                    709: (defun forth-reload ()
                    710:   (interactive)
                    711:   (let ((process (get-process forth-program-name)))
                    712:     (if process (kill-process process t)))
                    713:   (sleep-for-millisecs 100)
                    714:   (forth-mode))
                    715: 
                    716: 
                    717: ;; Special section for forth-help
                    718: 
                    719: (defvar forth-help-buffer "*Forth-help*"
                    720:   "Buffer used to display the requested documentation.")
                    721: 
                    722: (defvar forth-help-load-path nil
                    723:   "List of directories to search through to find *.doc
                    724:  (forth-help-file-suffix) files. Nil means current default directory.
                    725:  The specified directories must contain at least one .doc file. If it
                    726:  does not and you still want the load-path to scan that directory, create
                    727:  an empty file dummy.doc.")
                    728: 
                    729: (defvar forth-help-file-suffix "*.doc"
                    730:   "The file names to search for in each directory.")
                    731: 
                    732: (setq forth-search-command-prefix "grep -n \"^    [^(]* ")
                    733: (defvar forth-search-command-suffix "/dev/null")
                    734: (defvar forth-grep-error-regexp ": No such file or directory")
                    735: 
                    736: (defun forth-function-called-at-point ()
                    737:   "Return the space delimited word a point."
                    738:   (save-excursion
                    739:     (save-restriction
                    740:       (narrow-to-region (max (point-min) (- (point) 1000)) (point-max))
                    741:       (skip-chars-backward "^ \t\n" (point-min))
                    742:       (if (looking-at "[ \t\n]")
                    743:          (forward-char 1))
                    744:       (let (obj (p (point)))
                    745:        (skip-chars-forward "^ \t\n")
                    746:        (buffer-substring p (point))))))
                    747: 
                    748: (defun forth-help-names-extend-comp (path-list result)
                    749:   (cond ((null path-list) result)
                    750:        ((null (car path-list))
                    751:         (forth-help-names-extend-comp (cdr path-list) 
                    752:               (concat result forth-help-file-suffix " ")))
                    753:        (t (forth-help-names-extend-comp
                    754:            (cdr path-list) (concat result
                    755:                                    (expand-file-name (car path-list)) "/"
                    756:                                    forth-help-file-suffix " ")))))
                    757: 
                    758: (defun forth-help-names-extended ()
                    759:   (if forth-help-load-path
                    760:       (forth-help-names-extend-comp forth-help-load-path "")
                    761:     (error "forth-help-load-path not specified")))
                    762: 
                    763: 
1.7       anton     764: ;(define-key forth-mode-map "\C-hf" 'forth-documentation)
1.1       anton     765: 
                    766: (defun forth-documentation (function)
                    767:   "Display the full documentation of FORTH word."
                    768:   (interactive
                    769:    (let ((fn (forth-function-called-at-point))
                    770:         (enable-recursive-minibuffers t)            
                    771:         search-list
                    772:         val)
                    773:      (setq val (read-string (format "Describe forth word (default %s): " fn)))
                    774:      (list (if (equal val "") fn val))))
                    775:   (forth-get-doc (concat forth-search-command-prefix
                    776:                         (grep-regexp-quote (concat function " ("))
                    777:                         "[^)]*\-\-\" " (forth-help-names-extended)
                    778:                         forth-search-command-suffix))
                    779:   (message "C-x C-m switches back to the forth interaction window"))
                    780: 
                    781: (defun forth-get-doc (command)
                    782:   "Display the full documentation of command."
                    783:   (let ((curwin (get-buffer-window (window-buffer)))
                    784:        reswin
                    785:        pointmax)
                    786:     (with-output-to-temp-buffer forth-help-buffer
                    787:       (progn
                    788:        (call-process "sh" nil forth-help-buffer t "-c" command)
                    789:        (setq reswin (get-buffer-window forth-help-buffer))))
                    790:     (setq reswin (get-buffer-window forth-help-buffer))
                    791:     (select-window reswin)
                    792:     (save-excursion
                    793:       (goto-char (setq pointmax (point-max)))
                    794:       (insert "--------------------\n\n"))
                    795:     (let (fd doc) 
                    796:       (while (setq fd (forth-get-file-data pointmax))
                    797:        (setq doc (forth-get-doc-string fd))
                    798:        (save-excursion
                    799:          (goto-char (point-max))
                    800:          (insert (substring (car fd) (string-match "[^/]*$" (car fd)))
                    801:                  ":\n\n" doc "\n")))
                    802:       (if (not doc)
                    803:          (progn (goto-char (point-max)) (insert "Not found"))))
                    804:     (select-window curwin)))
                    805:   
                    806: (defun forth-skip-error-lines ()
                    807:   (let ((lines 0))
                    808:     (save-excursion
                    809:       (while (re-search-forward forth-grep-error-regexp nil t)
                    810:        (beginning-of-line)
                    811:        (forward-line 1)
                    812:        (setq lines (1+ lines))))
                    813:     (forward-line lines)))
                    814: 
                    815: (defun forth-get-doc-string (fd)
                    816:   "Find file (car fd) and extract documentation from line (nth 1 fd)."
                    817:   (let (result)
                    818:     (save-window-excursion
                    819:       (find-file (car fd))
                    820:       (goto-line (nth 1 fd))
                    821:       (if (not (eq (nth 1 fd) (1+ (count-lines (point-min) (point)))))
                    822:          (error "forth-get-doc-string: serious error"))
                    823:       (if (not (re-search-backward "\n[\t ]*\n" nil t))
                    824:          (goto-char (point-min))
                    825:        (goto-char (match-end 0)))
                    826:       (let ((p (point)))
                    827:        (if (not (re-search-forward "\n[\t ]*\n" nil t))
                    828:            (goto-char (point-max)))
                    829:        (setq result (buffer-substring p (point))))
                    830:       (bury-buffer (current-buffer)))
                    831:     result))
                    832: 
                    833: (defun forth-get-file-data (limit)
                    834:   "Parse grep output and return '(filename line#) list. Return nil when
                    835:  passing limit."
                    836:   (forth-skip-error-lines)
                    837:   (if (< (point) limit)
                    838:       (let ((result (forth-get-file-data-cont limit)))
                    839:        (forward-line 1)
                    840:        (beginning-of-line)
                    841:        result)))
                    842: 
                    843: (defun forth-get-file-data-cont (limit)
                    844:   (let (result)
                    845:     (let ((p (point)))
                    846:       (skip-chars-forward "^:")
                    847:       (setq result (buffer-substring p (point))))
                    848:     (if (< (point) limit)
                    849:        (let ((p (1+ (point))))
                    850:          (forward-char 1)
                    851:          (skip-chars-forward "^:")
                    852:          (list result (string-to-int (buffer-substring p (point))))))))
                    853: 
                    854: (defun grep-regexp-quote (str)
                    855:   (let ((i 0) (m 1) (res ""))
                    856:     (while (/= m 0)
                    857:       (setq m (string-to-char (substring str i)))
                    858:       (if (/= m 0)
                    859:          (progn
                    860:            (setq i (1+ i))
                    861:            (if (string-match (regexp-quote (char-to-string m))
                    862:                              ".*\\^$[]")
                    863:                (setq res (concat res "\\")))
                    864:            (setq res (concat res (char-to-string m))))))
                    865:     res))
                    866: 
                    867: 
1.9       anton     868: (define-key forth-mode-map "\C-x\C-e" 'compile)
1.1       anton     869: (define-key forth-mode-map "\C-x\C-n" 'next-error)
                    870: (require 'compile "compile")
                    871: 
1.6       anton     872: (defvar forth-compile-command "gforth ")
1.9       anton     873: ;(defvar forth-compilation-window-percent-height 30)
1.1       anton     874: 
                    875: (defun forth-compile (command)
                    876:   (interactive (list (setq forth-compile-command (read-string "Compile command: " forth-compile-command))))
                    877:   (forth-split-1 "*compilation*")
                    878:   (setq ctools-compile-command command)
                    879:   (compile1 ctools-compile-command "No more errors"))
                    880: 
                    881: 
1.12      pazsan    882: ;;; Forth menu
                    883: ;;; Mikael Karlsson <qramika@eras70.ericsson.se>
                    884: 
                    885: (cond ((string-match "XEmacs\\|Lucid" emacs-version)
                    886:        (require 'func-menu)
                    887: 
                    888:   (defconst fume-function-name-regexp-forth
                    889:    "^\\(:\\)[ \t]+\\([^ \t]*\\)"
                    890:    "Expression to get word definitions in Forth.")
                    891: 
                    892:   (setq fume-function-name-regexp-alist
                    893:       (append '((forth-mode . fume-function-name-regexp-forth) 
                    894:              ) fume-function-name-regexp-alist))
                    895: 
                    896:   ;; Find next forth word in the buffer
                    897:   (defun fume-find-next-forth-function-name (buffer)
                    898:     "Searches for the next forth word in BUFFER."
                    899:     (set-buffer buffer)
                    900:     (if (re-search-forward fume-function-name-regexp nil t)
                    901:       (let ((beg (match-beginning 2))
                    902:             (end (match-end 2)))
                    903:         (cons (buffer-substring beg end) beg))))
                    904: 
                    905:   (setq fume-find-function-name-method-alist
                    906:   (append '((forth-mode    . fume-find-next-forth-function-name))))
                    907: 
                    908:   ))
                    909: ;;; End Forth menu
                    910: 
                    911: ;;; File folding of forth-files
                    912: ;;; uses outline
                    913: ;;; Toggle activation with M-x fold-f (when editing a forth-file) 
                    914: ;;; Use f9 to expand, f10 to hide, Or the menubar in xemacs
                    915: ;;;
                    916: ;;; Works most of the times but loses sync with the cursor occasionally 
                    917: ;;; Could be improved by also folding on comments
                    918: 
                    919: (require 'outline)
                    920: 
                    921: ;;(define-key outline-minor-mode-map 'f9 'show-entry)
                    922: ;;(define-key outline-minor-mode-map 'f10 'hide-entry)
                    923: 
                    924: (defun fold-f  ()
                    925:    (interactive)
                    926:    (add-hook 'outline-minor-mode-hook 'hide-body)
                    927: 
                    928:    ; outline mode header start, i.e. find word definitions
                    929:    (setq  outline-regexp  "^\\(:\\)[ \t]+\\([^ \t]*\\)")
                    930: 
                    931:    (outline-minor-mode)
                    932: )
                    933: ;;; end file folding
                    934: 
                    935: ;;; func-menu is a package that scans your source file for function definitions
                    936: ;;; and makes a menubar entry that lets you jump to any particular function
                    937: ;;; definition by selecting it from the menu.  The following code turns this on
                    938: ;;; for all of the recognized languages.  Scanning the buffer takes some time,
                    939: ;;; but not much.
                    940: ;;;
                    941: (cond ((string-match "XEmacs\\|Lucid" emacs-version)
                    942:        (require 'func-menu)
                    943: ;;       (define-key global-map 'f8 'function-menu)
                    944:        (add-hook 'find-fible-hooks 'fume-add-menubar-entry)
                    945:        (define-key global-map "\C-cg" 'fume-prompt-function-goto)
                    946:        (define-key global-map '(shift button3) 'mouse-function-menu)
                    947:        ))

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>