Annotation of gforth/gforth.el, revision 1.9

1.1       anton       1: ;; This file is part of GNU Emacs.
                      2: ;; Changes by anton
1.6       anton       3: ;; This is a variant of forth.el that came with TILE.
1.5       anton       4: ;; I left most of this stuff untouched and made just a few changes for 
1.6       anton       5: ;; the things I use (mainly indentation and syntax tables).
                      6: ;; So there is still a lot of work to do to adapt this to gforth.
1.1       anton       7: 
                      8: ;; GNU Emacs is distributed in the hope that it will be useful,
                      9: ;; but WITHOUT ANY WARRANTY.  No author or distributor
                     10: ;; accepts responsibility to anyone for the consequences of using it
                     11: ;; or for whether it serves any particular purpose or works at all,
                     12: ;; unless he says so in writing.  Refer to the GNU Emacs General Public
                     13: ;; License for full details.
                     14: 
                     15: ;; Everyone is granted permission to copy, modify and redistribute
                     16: ;; GNU Emacs, but only under the conditions described in the
                     17: ;; GNU Emacs General Public License.   A copy of this license is
                     18: ;; supposed to have been given to you along with GNU Emacs so you
                     19: ;; can know your rights and responsibilities.  It should be in a
                     20: ;; file named COPYING.  Among other things, the copyright notice
                     21: ;; and this notice must be preserved on all copies.
                     22: 
1.9     ! anton      23: ;;; $Header: /usr/local/lib/cvs-repository/src-master/gforth/gforth.el,v 1.8 1994/08/25 15:25:26 anton Exp $
1.1       anton      24: 
                     25: ;;-------------------------------------------------------------------
                     26: ;; A Forth indentation, documentation search and interaction library
                     27: ;;-------------------------------------------------------------------
                     28: ;;
                     29: ;; Written by Goran Rydqvist, gorry@ida.liu.se, Summer 1988
                     30: ;; Started:    16 July 88
                     31: ;; Version:    2.10
                     32: ;; Last update:        5 December 1989 by Mikael Patel, mip@ida.liu.se
                     33: ;; Last update:        25 June 1990 by Goran Rydqvist, gorry@ida.liu.se
                     34: ;;
                     35: ;; Documentation: See forth-mode (^HF forth-mode)
                     36: ;;-------------------------------------------------------------------
                     37: 
                     38: 
                     39: (defvar forth-positives
1.6       anton      40:   " : :noname begin do ?do while if ?dup-if ?dup-not-if else case create does> exception> struct [if] [else] "
1.1       anton      41:   "Contains all words which will cause the indent-level to be incremented
                     42: on the next line.
                     43: OBS! All words in forth-positives must be surrounded by spaces.")
                     44: 
                     45: (defvar forth-negatives
1.6       anton      46:   " ; until repeat while +loop loop s+loop else then endif again endcase does> end-struct [then] [else] "
1.1       anton      47:   "Contains all words which will cause the indent-level to be decremented
                     48: on the current line.
                     49: OBS! All words in forth-negatives must be surrounded by spaces.")
                     50: 
                     51: (defvar forth-zeroes
1.5       anton      52:   " : :noname "
1.1       anton      53:   "Contains all words which causes the indent to go to zero")
                     54: 
1.6       anton      55: (defvar forth-prefixes
                     56:   " postpone [compile] ['] [char] "
                     57:   "words that prefix and escape other words")
                     58: 
1.1       anton      59: (defvar forth-mode-abbrev-table nil
                     60:   "Abbrev table in use in Forth-mode buffers.")
                     61: 
                     62: (define-abbrev-table 'forth-mode-abbrev-table ())
                     63: 
                     64: (defvar forth-mode-map nil
                     65:   "Keymap used in Forth mode.")
                     66: 
                     67: (if (not forth-mode-map)
                     68:     (setq forth-mode-map (make-sparse-keymap)))
                     69: 
                     70: (global-set-key "\e\C-m" 'forth-send-paragraph)
                     71: (global-set-key "\C-x\C-m" 'forth-split)
                     72: (global-set-key "\e " 'forth-reload)
                     73: 
1.9     ! anton      74: ;(define-key forth-mode-map "\M-\C-x" 'compile)
1.7       anton      75: (define-key forth-mode-map "\C-x\\" 'comment-region)
                     76: (define-key forth-mode-map "\C-x|" 'uncomment-region)
                     77: (define-key forth-mode-map "\C-x~" 'forth-remove-tracers)
1.1       anton      78: (define-key forth-mode-map "\e\C-m" 'forth-send-paragraph)
                     79: (define-key forth-mode-map "\eo" 'forth-send-buffer)
                     80: (define-key forth-mode-map "\C-x\C-m" 'forth-split)
                     81: (define-key forth-mode-map "\e " 'forth-reload)
                     82: (define-key forth-mode-map "\t" 'forth-indent-command)
                     83: (define-key forth-mode-map "\C-m" 'reindent-then-newline-and-indent)
1.7       anton      84: (define-key forth-mode-map "\M-q" 'forth-fill-paragraph)
1.1       anton      85: 
                     86: (defvar forth-mode-syntax-table nil
                     87:   "Syntax table in use in Forth-mode buffers.")
                     88: 
                     89: (if (not forth-mode-syntax-table)
                     90:     (progn
                     91:       (setq forth-mode-syntax-table (make-syntax-table))
1.6       anton      92:       (let ((char 0))
                     93:        (while (< char ?!)
                     94:          (modify-syntax-entry char " " forth-mode-syntax-table)
                     95:          (setq char (1+ char)))
                     96:        (while (< char 256)
                     97:          (modify-syntax-entry char "w" forth-mode-syntax-table)
                     98:          (setq char (1+ char))))
                     99:       (modify-syntax-entry ?\" "\"" forth-mode-syntax-table)
                    100:       (modify-syntax-entry ?\\ "<" forth-mode-syntax-table)
                    101:       (modify-syntax-entry ?\n ">" forth-mode-syntax-table)
                    102:       ))
                    103: ;I do not define '(' and ')' as comment delimiters, because emacs
                    104: ;only supports one comment syntax (and a hack to accomodate C++); I
                    105: ;use '\' for natural language comments and '(' for formal comments
                    106: ;like stack comments, so for me it's better to have emacs treat '\'
                    107: ;comments as comments. I you want it different, make the appropriate
                    108: ;changes (best in your .emacs file).
                    109: ;
                    110: ;Hmm, the C++ hack could be used to support both comment syntaxes: we
                    111: ;can have different comment styles, if both comments start with the
                    112: ;same character. we could use ' ' as first and '(' and '\' as second
                    113: ;character. However this would fail for G\ comments.
1.1       anton     114: 
                    115: (defconst forth-indent-level 4
                    116:   "Indentation of Forth statements.")
                    117: 
                    118: (defun forth-mode-variables ()
                    119:   (set-syntax-table forth-mode-syntax-table)
                    120:   (setq local-abbrev-table forth-mode-abbrev-table)
                    121:   (make-local-variable 'paragraph-start)
                    122:   (setq paragraph-start (concat "^$\\|" page-delimiter))
                    123:   (make-local-variable 'paragraph-separate)
                    124:   (setq paragraph-separate paragraph-start)
                    125:   (make-local-variable 'indent-line-function)
                    126:   (setq indent-line-function 'forth-indent-line)
1.6       anton     127: ;  (make-local-variable 'require-final-newline)
                    128: ;  (setq require-final-newline t)
1.1       anton     129:   (make-local-variable 'comment-start)
1.3       anton     130:   (setq comment-start "\\ ")
                    131:   ;(make-local-variable 'comment-end)
                    132:   ;(setq comment-end " )")
1.1       anton     133:   (make-local-variable 'comment-column)
                    134:   (setq comment-column 40)
                    135:   (make-local-variable 'comment-start-skip)
1.3       anton     136:   (setq comment-start-skip "\\ ")
1.1       anton     137:   (make-local-variable 'comment-indent-hook)
                    138:   (setq comment-indent-hook 'forth-comment-indent)
                    139:   (make-local-variable 'parse-sexp-ignore-comments)
                    140:   (setq parse-sexp-ignore-comments t))
                    141:   
1.2       anton     142: ;;;###autoload
1.1       anton     143: (defun forth-mode ()
                    144:   "
                    145: Major mode for editing Forth code. Tab indents for Forth code. Comments
1.9     ! anton     146: are delimited with \\ and newline. Paragraphs are separated by blank lines
        !           147: only. Delete converts tabs to spaces as it moves back.
1.1       anton     148: \\{forth-mode-map}
                    149:  Forth-split
                    150:     Positions the current buffer on top and a forth-interaction window
                    151:     below. The window size is controlled by the forth-percent-height
                    152:     variable (see below).
                    153:  Forth-reload
                    154:     Reloads the forth library and restarts the forth process.
                    155:  Forth-send-buffer
                    156:     Sends the current buffer, in text representation, as input to the
                    157:     forth process.
                    158:  Forth-send-paragraph
                    159:     Sends the previous or the current paragraph to the forth-process.
                    160:     Note that the cursor only need to be with in the paragraph to be sent.
                    161: forth-documentation
                    162:     Search for documentation of forward adjacent to cursor. Note! To use
                    163:     this mode you have to add a line, to your .emacs file, defining the
                    164:     directories to search through for documentation files (se variable
                    165:     forth-help-load-path below) e.g. (setq forth-help-load-path '(nil)).
                    166: 
                    167: Variables controlling interaction and startup
                    168:  forth-percent-height
                    169:     Tells split how high to make the edit portion, in percent of the
                    170:     current screen height.
                    171:  forth-program-name
                    172:     Tells the library which program name to execute in the interation
                    173:     window.
                    174: 
                    175: Variables controlling indentation style:
                    176:  forth-positives
                    177:     A string containing all words which causes the indent-level of the
                    178:     following line to be incremented.
                    179:     OBS! Each word must be surronded by spaces.
                    180:  forth-negatives
                    181:     A string containing all words which causes the indentation of the
                    182:     current line to be decremented, if the word begin the line. These
                    183:     words also has a cancelling effect on the indent-level of the
                    184:     following line, independent of position.
                    185:     OBS! Each word must be surronded by spaces.
                    186:  forth-zeroes
                    187:     A string containing all words which causes the indentation of the
                    188:     current line to go to zero, if the word begin the line.
                    189:     OBS! Each word must be surronded by spaces.
                    190:  forth-indent-level
                    191:     Indentation increment/decrement of Forth statements.
                    192: 
                    193:  Note! A word which decrements the indentation of the current line, may
                    194:     also be mentioned in forth-positives to cause the indentation to
                    195:     resume the previous level.
                    196: 
                    197: Variables controling documentation search
                    198:  forth-help-load-path
                    199:     List of directories to search through to find *.doc
                    200:     (forth-help-file-suffix) files. Nil means current default directory.
                    201:     The specified directories must contain at least one .doc file. If it
                    202:     does not and you still want the load-path to scan that directory, create
                    203:     an empty file dummy.doc.
                    204:  forth-help-file-suffix
                    205:     The file names to search for in each directory specified by
                    206:     forth-help-load-path. Defaulted to '*.doc'. 
                    207: "
                    208:   (interactive)
                    209:   (kill-all-local-variables)
                    210:   (use-local-map forth-mode-map)
                    211:   (setq mode-name "Forth")
                    212:   (setq major-mode 'forth-mode)
                    213:   (forth-mode-variables)
                    214: ;  (if (not (forth-process-running-p))
                    215: ;      (run-forth forth-program-name))
                    216:   (run-hooks 'forth-mode-hook))
                    217: 
1.6       anton     218: (setq forth-mode-hook
1.9     ! anton     219:       '(lambda () 
        !           220:         (make-local-variable 'compile-command)
        !           221:         (setq compile-command "gforth ")))
1.6       anton     222: 
1.7       anton     223: (defun forth-fill-paragraph () 
                    224:   "Fill comments (starting with '\'; do not fill code (block style
                    225: programmers who tend to fill code won't use emacs anyway:-)."
1.9     ! anton     226:   ; Currently only comments at the start of the line are filled.
        !           227:   ; Something like lisp-fill-paragraph may be better.  We cannot use
        !           228:   ; fill-paragraph, because it removes the \ from the first comment
        !           229:   ; line. Therefore we have to look for the first line of the comment
        !           230:   ; and use fill-region.
1.7       anton     231:   (interactive)
                    232:   (save-excursion
                    233:     (beginning-of-line)
1.9     ! anton     234:     (while (and
        !           235:             (= (forward-line -1) 0)
        !           236:             (looking-at "[ \t]*\\\\[ \t]+")))
        !           237:     (if (not (looking-at "[ \t]*\\\\[ \t]+"))
        !           238:        (forward-line 1))
        !           239:     (let ((from (point))
        !           240:          (to (save-excursion (forward-paragraph) (point))))
        !           241:       (if (looking-at "[ \t]*\\\\[ \t]+")
        !           242:          (progn (goto-char (match-end 0))
        !           243:                 (set-fill-prefix)
        !           244:                 (fill-region from to nil))))))
1.7       anton     245: 
1.1       anton     246: (defun forth-comment-indent ()
                    247:   (save-excursion
                    248:     (beginning-of-line)
                    249:     (if (looking-at ":[ \t]*")
                    250:        (progn
                    251:          (end-of-line)
                    252:          (skip-chars-backward " \t\n")
                    253:          (1+ (current-column)))
                    254:       comment-column)))
                    255: 
                    256: (defun forth-current-indentation ()
                    257:   (save-excursion
                    258:     (beginning-of-line)
                    259:     (back-to-indentation)
                    260:     (current-column)))
                    261: 
                    262: (defun forth-delete-indentation ()
                    263:   (let ((b nil) (m nil))
                    264:     (save-excursion
                    265:       (beginning-of-line)
                    266:       (setq b (point))
                    267:       (back-to-indentation)
                    268:       (setq m (point)))
                    269:     (delete-region b m)))
                    270: 
                    271: (defun forth-indent-line (&optional flag)
                    272:   "Correct indentation of the current Forth line."
                    273:   (let ((x (forth-calculate-indent)))
                    274:     (forth-indent-to x)))
                    275:   
                    276: (defun forth-indent-command ()
                    277:   (interactive)
                    278:   (forth-indent-line t))
                    279: 
                    280: (defun forth-indent-to (x)
                    281:   (let ((p nil))
                    282:     (setq p (- (current-column) (forth-current-indentation)))
                    283:     (forth-delete-indentation)
                    284:     (beginning-of-line)
                    285:     (indent-to x)
                    286:     (if (> p 0) (forward-char p))))
                    287: 
                    288: ;;Calculate indent
                    289: (defun forth-calculate-indent ()
                    290:   (let ((w1 nil) (indent 0) (centre 0))
                    291:     (save-excursion
                    292:       (beginning-of-line)
                    293:       (skip-chars-backward " \t\n")
                    294:       (beginning-of-line)
                    295:       (back-to-indentation)
                    296:       (setq indent (current-column))
                    297:       (setq centre indent)
                    298:       (setq indent (+ indent (forth-sum-line-indentation))))
                    299:     (save-excursion
                    300:       (beginning-of-line)
                    301:       (back-to-indentation)
                    302:       (let ((p (point)))
                    303:        (skip-chars-forward "^ \t\n")
                    304:        (setq w1 (buffer-substring p (point)))))
                    305:     (if (> (- indent centre) forth-indent-level)
                    306:        (setq indent (+ centre forth-indent-level)))
                    307:     (if (> (- centre indent) forth-indent-level)
                    308:        (setq indent (- centre forth-indent-level)))
                    309:     (if (< indent 0) (setq indent 0))
                    310:     (setq indent (- indent
                    311:                    (if (string-match 
                    312:                         (regexp-quote (concat " " w1 " "))
                    313:                         forth-negatives)
                    314:                        forth-indent-level 0)))
                    315:     (if (string-match (regexp-quote (concat " " w1 " ")) forth-zeroes)
                    316:        (setq indent 0))
                    317:     indent))
                    318: 
                    319: (defun forth-sum-line-indentation ()
                    320:   "Add upp the positive and negative weights of all words on the current line."
                    321:   (let ((b (point)) (e nil) (sum 0) (w nil) (t1 nil) (t2 nil) (first t))
                    322:     (end-of-line) (setq e (point))
                    323:     (goto-char b)
                    324:     (while (< (point) e)
                    325:       (setq w (forth-next-word))
                    326:       (setq t1 (string-match (regexp-quote (concat " " w " "))
                    327:                             forth-positives))
                    328:       (setq t2 (string-match (regexp-quote (concat " " w " "))
                    329:                             forth-negatives))
                    330:       (if t1
                    331:          (setq sum (+ sum forth-indent-level)))
                    332:       (if (and t2 (not first))
                    333:          (setq sum (- sum forth-indent-level)))
                    334:       (skip-chars-forward " \t")
                    335:       (setq first nil))
                    336:     sum))
                    337: 
                    338: 
                    339: (defun forth-next-word ()
1.6       anton     340:   "Return the next forth-word. Skip anything that the forth-word takes from
                    341: the input stream (comments, arguments, etc.)"
                    342: ;actually, it would be better to use commands based on the
                    343: ;syntax-table or comment-start etc.
1.1       anton     344:   (let ((w1 nil))
                    345:     (while (not w1)
                    346:       (skip-chars-forward " \t\n")
                    347:       (let ((p (point)))
                    348:        (skip-chars-forward "^ \t\n")
                    349:        (setq w1 (buffer-substring p (point))))
                    350:       (cond ((string-match "\"" w1)
                    351:             (progn
1.6       anton     352:               (skip-chars-forward "^\"\n")
                    353:               (forward-char)))
                    354:            ((string-match "\\\\" w1)
                    355:             (progn
                    356:               (end-of-line)
                    357:               ))
                    358:            ((or (equal "(" w1) (equal ".(" w1))
1.1       anton     359:             (progn
1.6       anton     360:               (skip-chars-forward "^)\n")
                    361:               (forward-char)))
                    362:            ((string-match (regexp-quote (concat " " w1 " ")) forth-prefixes)
                    363:             (progn (skip-chars-forward " \t\n")
                    364:                    (skip-chars-forward "^ \t\n")))
1.1       anton     365:            (t nil)))
                    366:     w1))
                    367:       
                    368: 
                    369: ;; Forth commands
                    370: 
1.7       anton     371: (defun forth-remove-tracers ()
                    372:   "Remove tracers of the form `~~ '. Queries the user for each occurrence."
                    373:   (interactive)
                    374:   (query-replace "~~ " ""))
                    375: 
1.5       anton     376: (defvar forth-program-name "gforth"
1.1       anton     377:   "*Program invoked by the `run-forth' command.")
                    378: 
                    379: (defvar forth-band-name nil
                    380:   "*Band loaded by the `run-forth' command.")
                    381: 
                    382: (defvar forth-program-arguments nil
                    383:   "*Arguments passed to the Forth program by the `run-forth' command.")
                    384: 
                    385: (defun run-forth (command-line)
                    386:   "Run an inferior Forth process. Output goes to the buffer `*forth*'.
                    387: With argument, asks for a command line. Split up screen and run forth 
                    388: in the lower portion. The current-buffer when called will stay in the
                    389: upper portion of the screen, and all other windows are deleted.
                    390: Call run-forth again to make the *forth* buffer appear in the lower
                    391: part of the screen."
                    392:   (interactive
                    393:    (list (let ((default
                    394:                 (or forth-process-command-line
                    395:                     (forth-default-command-line))))
                    396:           (if current-prefix-arg
                    397:               (read-string "Run Forth: " default)
                    398:               default))))
                    399:   (setq forth-process-command-line command-line)
                    400:   (forth-start-process command-line)
                    401:   (forth-split)
                    402:   (forth-set-runlight forth-runlight:input))
                    403: 
                    404: (defun reset-forth ()
                    405:   "Reset the Forth process."
                    406:   (interactive)
                    407:   (let ((process (get-process forth-program-name)))
                    408:     (cond ((or (not process)
                    409:               (not (eq (process-status process) 'run))
                    410:               (yes-or-no-p
                    411: "The Forth process is running, are you SURE you want to reset it? "))
                    412:           (message "Resetting Forth process...")
                    413:           (forth-reload)
                    414:           (message "Resetting Forth process...done")))))
                    415: 
                    416: (defun forth-default-command-line ()
                    417:   (concat forth-program-name " -emacs"
                    418:          (if forth-program-arguments
                    419:              (concat " " forth-program-arguments)
                    420:              "")
                    421:          (if forth-band-name
                    422:              (concat " -band " forth-band-name)
                    423:              "")))
                    424: 
                    425: ;;;; Internal Variables
                    426: 
                    427: (defvar forth-process-command-line nil
                    428:   "Command used to start the most recent Forth process.")
                    429: 
                    430: (defvar forth-previous-send ""
                    431:   "Most recent expression transmitted to the Forth process.")
                    432: 
                    433: (defvar forth-process-filter-queue '()
                    434:   "Queue used to synchronize filter actions properly.")
                    435: 
                    436: (defvar forth-prompt "ok"
                    437:   "The current forth prompt string.")
                    438: 
                    439: (defvar forth-start-hook nil
                    440:   "If non-nil, a procedure to call when the Forth process is started.
                    441: When called, the current buffer will be the Forth process-buffer.")
                    442: 
                    443: (defvar forth-signal-death-message nil
                    444:   "If non-nil, causes a message to be generated when the Forth process dies.")
                    445: 
1.9     ! anton     446: (defvar forth-percent-height 50
1.1       anton     447:   "Tells run-forth how high the upper window should be in percent.")
                    448: 
                    449: (defconst forth-runlight:input ?I
                    450:   "The character displayed when the Forth process is waiting for input.")
                    451: 
                    452: (defvar forth-mode-string ""
                    453:   "String displayed in the mode line when the Forth process is running.")
                    454: 
                    455: ;;;; Evaluation Commands
                    456: 
                    457: (defun forth-send-string (&rest strings)
                    458:   "Send the string arguments to the Forth process.
                    459: The strings are concatenated and terminated by a newline."
                    460:   (cond ((forth-process-running-p)
                    461:         (forth-send-string-1 strings))
                    462:        ((yes-or-no-p "The Forth process has died.  Reset it? ")
                    463:         (reset-forth)
                    464:         (goto-char (point-max))
                    465:         (forth-send-string-1 strings))))
                    466: 
                    467: (defun forth-send-string-1 (strings)
                    468:   (let ((string (apply 'concat strings)))
                    469:     (forth-send-string-2 string)))
                    470: 
                    471: (defun forth-send-string-2 (string)
                    472:   (let ((process (get-process forth-program-name)))
                    473:     (if (not (eq (current-buffer) (get-buffer forth-program-name)))
                    474:        (progn
                    475:         (forth-process-filter-output string)
                    476:         (forth-process-filter:finish)))
                    477:     (send-string process (concat string "\n"))
                    478:     (if (eq (current-buffer) (process-buffer process))
                    479:        (set-marker (process-mark process) (point)))))
                    480: 
                    481: 
                    482: (defun forth-send-region (start end)
                    483:   "Send the current region to the Forth process.
                    484: The region is sent terminated by a newline."
                    485:   (interactive "r")
                    486:   (let ((process (get-process forth-program-name)))
                    487:     (if (and process (eq (current-buffer) (process-buffer process)))
                    488:        (progn (goto-char end)
                    489:               (set-marker (process-mark process) end))))
                    490:   (forth-send-string "\n" (buffer-substring start end) "\n"))
                    491: 
                    492: (defun forth-end-of-paragraph ()
                    493:   (if (looking-at "[\t\n ]+") (skip-chars-backward  "\t\n "))
                    494:   (if (not (re-search-forward "\n[ \t]*\n" nil t))
                    495:       (goto-char (point-max))))
                    496: 
                    497: (defun forth-send-paragraph ()
                    498:   "Send the current or the previous paragraph to the Forth process"
                    499:   (interactive)
                    500:   (let (end)
                    501:     (save-excursion
                    502:       (forth-end-of-paragraph)
                    503:       (skip-chars-backward  "\t\n ")
                    504:       (setq end (point))
                    505:       (if (re-search-backward "\n[ \t]*\n" nil t)
                    506:          (setq start (point))
                    507:        (goto-char (point-min)))
                    508:       (skip-chars-forward  "\t\n ")
                    509:       (forth-send-region (point) end))))
                    510:   
                    511: (defun forth-send-buffer ()
                    512:   "Send the current buffer to the Forth process."
                    513:   (interactive)
                    514:   (if (eq (current-buffer) (forth-process-buffer))
                    515:       (error "Not allowed to send this buffer's contents to Forth"))
                    516:   (forth-send-region (point-min) (point-max)))
                    517: 
                    518: 
                    519: ;;;; Basic Process Control
                    520: 
                    521: (defun forth-start-process (command-line)
                    522:   (let ((buffer (get-buffer-create "*forth*")))
                    523:     (let ((process (get-buffer-process buffer)))
                    524:       (save-excursion
                    525:        (set-buffer buffer)
                    526:        (progn (if process (delete-process process))
                    527:               (goto-char (point-max))
                    528:               (setq mode-line-process '(": %s"))
                    529:               (add-to-global-mode-string 'forth-mode-string)
                    530:               (setq process
                    531:                     (apply 'start-process
                    532:                            (cons forth-program-name
                    533:                                  (cons buffer
                    534:                                        (forth-parse-command-line
                    535:                                         command-line)))))
                    536:               (set-marker (process-mark process) (point-max))
                    537:               (forth-process-filter-initialize t)
                    538:               (forth-modeline-initialize)
                    539:               (set-process-sentinel process 'forth-process-sentinel)
                    540:               (set-process-filter process 'forth-process-filter)
                    541:               (run-hooks 'forth-start-hook)))
                    542:     buffer)))
                    543: 
                    544: (defun forth-parse-command-line (string)
                    545:   (setq string (substitute-in-file-name string))
                    546:   (let ((start 0)
                    547:        (result '()))
                    548:     (while start
                    549:       (let ((index (string-match "[ \t]" string start)))
                    550:        (setq start
                    551:              (cond ((not index)
                    552:                     (setq result
                    553:                           (cons (substring string start)
                    554:                                 result))
                    555:                     nil)
                    556:                    ((= index start)
                    557:                     (string-match "[^ \t]" string start))
                    558:                    (t
                    559:                     (setq result
                    560:                           (cons (substring string start index)
                    561:                                 result))
                    562:                     (1+ index))))))
                    563:     (nreverse result)))
                    564: 
                    565: 
                    566: (defun forth-process-running-p ()
                    567:   "True iff there is a Forth process whose status is `run'."
                    568:   (let ((process (get-process forth-program-name)))
                    569:     (and process
                    570:         (eq (process-status process) 'run))))
                    571: 
                    572: (defun forth-process-buffer ()
                    573:   (let ((process (get-process forth-program-name)))
                    574:     (and process (process-buffer process))))
                    575: 
                    576: ;;;; Process Filter
                    577: 
                    578: (defun forth-process-sentinel (proc reason)
                    579:   (let ((inhibit-quit nil))
                    580:     (forth-process-filter-initialize (eq reason 'run))
                    581:     (if (eq reason 'run)
                    582:        (forth-modeline-initialize)
                    583:        (setq forth-mode-string "")))
                    584:   (if (and (not (memq reason '(run stop)))
                    585:           forth-signal-death-message)
                    586:       (progn (beep)
                    587:             (message
                    588: "The Forth process has died!  Do M-x reset-forth to restart it"))))
                    589: 
                    590: (defun forth-process-filter-initialize (running-p)
                    591:   (setq forth-process-filter-queue (cons '() '()))
                    592:   (setq forth-prompt "ok"))
                    593: 
                    594: 
                    595: (defun forth-process-filter (proc string)
                    596:   (forth-process-filter-output string)
                    597:   (forth-process-filter:finish))
                    598: 
                    599: (defun forth-process-filter:enqueue (action)
                    600:   (let ((next (cons action '())))
                    601:     (if (cdr forth-process-filter-queue)
                    602:        (setcdr (cdr forth-process-filter-queue) next)
                    603:        (setcar forth-process-filter-queue next))
                    604:     (setcdr forth-process-filter-queue next)))
                    605: 
                    606: (defun forth-process-filter:finish ()
                    607:   (while (car forth-process-filter-queue)
                    608:     (let ((next (car forth-process-filter-queue)))
                    609:       (setcar forth-process-filter-queue (cdr next))
                    610:       (if (not (cdr next))
                    611:          (setcdr forth-process-filter-queue '()))
                    612:       (apply (car (car next)) (cdr (car next))))))
                    613: 
                    614: ;;;; Process Filter Output
                    615: 
                    616: (defun forth-process-filter-output (&rest args)
                    617:   (if (not (and args
                    618:                (null (cdr args))
                    619:                (stringp (car args))
                    620:                (string-equal "" (car args))))
                    621:       (forth-process-filter:enqueue
                    622:        (cons 'forth-process-filter-output-1 args))))
                    623: 
                    624: (defun forth-process-filter-output-1 (&rest args)
                    625:   (save-excursion
                    626:     (forth-goto-output-point)
                    627:     (apply 'insert-before-markers args)))
                    628: 
                    629: (defun forth-guarantee-newlines (n)
                    630:   (save-excursion
                    631:     (forth-goto-output-point)
                    632:     (let ((stop nil))
                    633:       (while (and (not stop)
                    634:                  (bolp))
                    635:        (setq n (1- n))
                    636:        (if (bobp)
                    637:            (setq stop t)
                    638:          (backward-char))))
                    639:     (forth-goto-output-point)
                    640:     (while (> n 0)
                    641:       (insert-before-markers ?\n)
                    642:       (setq n (1- n)))))
                    643: 
                    644: (defun forth-goto-output-point ()
                    645:   (let ((process (get-process forth-program-name)))
                    646:     (set-buffer (process-buffer process))
                    647:     (goto-char (process-mark process))))
                    648: 
                    649: (defun forth-modeline-initialize ()
                    650:   (setq forth-mode-string "  "))
                    651: 
                    652: (defun forth-set-runlight (runlight)
                    653:   (aset forth-mode-string 0 runlight)
                    654:   (forth-modeline-redisplay))
                    655: 
                    656: (defun forth-modeline-redisplay ()
                    657:   (save-excursion (set-buffer (other-buffer)))
                    658:   (set-buffer-modified-p (buffer-modified-p))
                    659:   (sit-for 0))
                    660: 
                    661: ;;;; Process Filter Operations
                    662: 
                    663: (defun add-to-global-mode-string (x)
                    664:   (cond ((null global-mode-string)
                    665:         (setq global-mode-string (list "" x " ")))
                    666:        ((not (memq x global-mode-string))
                    667:         (setq global-mode-string
                    668:               (cons ""
                    669:                     (cons x
                    670:                           (cons " "
                    671:                                 (if (equal "" (car global-mode-string))
                    672:                                     (cdr global-mode-string)
                    673:                                     global-mode-string))))))))
                    674: 
                    675: 
                    676: ;; Misc
                    677: 
                    678: (setq auto-mode-alist (append auto-mode-alist
1.4       pazsan    679:                                '(("\\.fs$" . forth-mode))))
1.1       anton     680: 
                    681: (defun forth-split ()
                    682:   (interactive)
                    683:   (forth-split-1 "*forth*"))
                    684: 
                    685: (defun forth-split-1 (buffer)
                    686:   (if (not (eq (window-buffer) (get-buffer buffer)))
                    687:       (progn
                    688:        (delete-other-windows)
                    689:        (split-window-vertically
                    690:         (/ (* (screen-height) forth-percent-height) 100))
                    691:        (other-window 1)
                    692:        (switch-to-buffer buffer)
                    693:        (goto-char (point-max))
                    694:        (other-window 1))))
                    695:     
                    696: (defun forth-reload ()
                    697:   (interactive)
                    698:   (let ((process (get-process forth-program-name)))
                    699:     (if process (kill-process process t)))
                    700:   (sleep-for-millisecs 100)
                    701:   (forth-mode))
                    702: 
                    703: 
                    704: ;; Special section for forth-help
                    705: 
                    706: (defvar forth-help-buffer "*Forth-help*"
                    707:   "Buffer used to display the requested documentation.")
                    708: 
                    709: (defvar forth-help-load-path nil
                    710:   "List of directories to search through to find *.doc
                    711:  (forth-help-file-suffix) files. Nil means current default directory.
                    712:  The specified directories must contain at least one .doc file. If it
                    713:  does not and you still want the load-path to scan that directory, create
                    714:  an empty file dummy.doc.")
                    715: 
                    716: (defvar forth-help-file-suffix "*.doc"
                    717:   "The file names to search for in each directory.")
                    718: 
                    719: (setq forth-search-command-prefix "grep -n \"^    [^(]* ")
                    720: (defvar forth-search-command-suffix "/dev/null")
                    721: (defvar forth-grep-error-regexp ": No such file or directory")
                    722: 
                    723: (defun forth-function-called-at-point ()
                    724:   "Return the space delimited word a point."
                    725:   (save-excursion
                    726:     (save-restriction
                    727:       (narrow-to-region (max (point-min) (- (point) 1000)) (point-max))
                    728:       (skip-chars-backward "^ \t\n" (point-min))
                    729:       (if (looking-at "[ \t\n]")
                    730:          (forward-char 1))
                    731:       (let (obj (p (point)))
                    732:        (skip-chars-forward "^ \t\n")
                    733:        (buffer-substring p (point))))))
                    734: 
                    735: (defun forth-help-names-extend-comp (path-list result)
                    736:   (cond ((null path-list) result)
                    737:        ((null (car path-list))
                    738:         (forth-help-names-extend-comp (cdr path-list) 
                    739:               (concat result forth-help-file-suffix " ")))
                    740:        (t (forth-help-names-extend-comp
                    741:            (cdr path-list) (concat result
                    742:                                    (expand-file-name (car path-list)) "/"
                    743:                                    forth-help-file-suffix " ")))))
                    744: 
                    745: (defun forth-help-names-extended ()
                    746:   (if forth-help-load-path
                    747:       (forth-help-names-extend-comp forth-help-load-path "")
                    748:     (error "forth-help-load-path not specified")))
                    749: 
                    750: 
1.7       anton     751: ;(define-key forth-mode-map "\C-hf" 'forth-documentation)
1.1       anton     752: 
                    753: (defun forth-documentation (function)
                    754:   "Display the full documentation of FORTH word."
                    755:   (interactive
                    756:    (let ((fn (forth-function-called-at-point))
                    757:         (enable-recursive-minibuffers t)            
                    758:         search-list
                    759:         val)
                    760:      (setq val (read-string (format "Describe forth word (default %s): " fn)))
                    761:      (list (if (equal val "") fn val))))
                    762:   (forth-get-doc (concat forth-search-command-prefix
                    763:                         (grep-regexp-quote (concat function " ("))
                    764:                         "[^)]*\-\-\" " (forth-help-names-extended)
                    765:                         forth-search-command-suffix))
                    766:   (message "C-x C-m switches back to the forth interaction window"))
                    767: 
                    768: (defun forth-get-doc (command)
                    769:   "Display the full documentation of command."
                    770:   (let ((curwin (get-buffer-window (window-buffer)))
                    771:        reswin
                    772:        pointmax)
                    773:     (with-output-to-temp-buffer forth-help-buffer
                    774:       (progn
                    775:        (call-process "sh" nil forth-help-buffer t "-c" command)
                    776:        (setq reswin (get-buffer-window forth-help-buffer))))
                    777:     (setq reswin (get-buffer-window forth-help-buffer))
                    778:     (select-window reswin)
                    779:     (save-excursion
                    780:       (goto-char (setq pointmax (point-max)))
                    781:       (insert "--------------------\n\n"))
                    782:     (let (fd doc) 
                    783:       (while (setq fd (forth-get-file-data pointmax))
                    784:        (setq doc (forth-get-doc-string fd))
                    785:        (save-excursion
                    786:          (goto-char (point-max))
                    787:          (insert (substring (car fd) (string-match "[^/]*$" (car fd)))
                    788:                  ":\n\n" doc "\n")))
                    789:       (if (not doc)
                    790:          (progn (goto-char (point-max)) (insert "Not found"))))
                    791:     (select-window curwin)))
                    792:   
                    793: (defun forth-skip-error-lines ()
                    794:   (let ((lines 0))
                    795:     (save-excursion
                    796:       (while (re-search-forward forth-grep-error-regexp nil t)
                    797:        (beginning-of-line)
                    798:        (forward-line 1)
                    799:        (setq lines (1+ lines))))
                    800:     (forward-line lines)))
                    801: 
                    802: (defun forth-get-doc-string (fd)
                    803:   "Find file (car fd) and extract documentation from line (nth 1 fd)."
                    804:   (let (result)
                    805:     (save-window-excursion
                    806:       (find-file (car fd))
                    807:       (goto-line (nth 1 fd))
                    808:       (if (not (eq (nth 1 fd) (1+ (count-lines (point-min) (point)))))
                    809:          (error "forth-get-doc-string: serious error"))
                    810:       (if (not (re-search-backward "\n[\t ]*\n" nil t))
                    811:          (goto-char (point-min))
                    812:        (goto-char (match-end 0)))
                    813:       (let ((p (point)))
                    814:        (if (not (re-search-forward "\n[\t ]*\n" nil t))
                    815:            (goto-char (point-max)))
                    816:        (setq result (buffer-substring p (point))))
                    817:       (bury-buffer (current-buffer)))
                    818:     result))
                    819: 
                    820: (defun forth-get-file-data (limit)
                    821:   "Parse grep output and return '(filename line#) list. Return nil when
                    822:  passing limit."
                    823:   (forth-skip-error-lines)
                    824:   (if (< (point) limit)
                    825:       (let ((result (forth-get-file-data-cont limit)))
                    826:        (forward-line 1)
                    827:        (beginning-of-line)
                    828:        result)))
                    829: 
                    830: (defun forth-get-file-data-cont (limit)
                    831:   (let (result)
                    832:     (let ((p (point)))
                    833:       (skip-chars-forward "^:")
                    834:       (setq result (buffer-substring p (point))))
                    835:     (if (< (point) limit)
                    836:        (let ((p (1+ (point))))
                    837:          (forward-char 1)
                    838:          (skip-chars-forward "^:")
                    839:          (list result (string-to-int (buffer-substring p (point))))))))
                    840: 
                    841: (defun grep-regexp-quote (str)
                    842:   (let ((i 0) (m 1) (res ""))
                    843:     (while (/= m 0)
                    844:       (setq m (string-to-char (substring str i)))
                    845:       (if (/= m 0)
                    846:          (progn
                    847:            (setq i (1+ i))
                    848:            (if (string-match (regexp-quote (char-to-string m))
                    849:                              ".*\\^$[]")
                    850:                (setq res (concat res "\\")))
                    851:            (setq res (concat res (char-to-string m))))))
                    852:     res))
                    853: 
                    854: 
1.9     ! anton     855: (define-key forth-mode-map "\C-x\C-e" 'compile)
1.1       anton     856: (define-key forth-mode-map "\C-x\C-n" 'next-error)
                    857: (require 'compile "compile")
                    858: 
1.6       anton     859: (defvar forth-compile-command "gforth ")
1.9     ! anton     860: ;(defvar forth-compilation-window-percent-height 30)
1.1       anton     861: 
                    862: (defun forth-compile (command)
                    863:   (interactive (list (setq forth-compile-command (read-string "Compile command: " forth-compile-command))))
                    864:   (forth-split-1 "*compilation*")
                    865:   (setq ctools-compile-command command)
                    866:   (compile1 ctools-compile-command "No more errors"))
                    867: 
                    868: 

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