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1 ;;; gud.el --- Grand Unified Debugger mode for running GDB and other debuggers
3 ;; Copyright (C) 1992-1996, 1998, 2000-2012 Free Software Foundation, Inc.
5 ;; Author: Eric S. Raymond <esr@snark.thyrsus.com>
6 ;; Maintainer: FSF
7 ;; Keywords: unix, tools
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software: you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation, either version 3 of the License, or
14 ;; (at your option) any later version.
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
24 ;;; Commentary:
26 ;; The ancestral gdb.el was by W. Schelter <wfs@rascal.ics.utexas.edu>.
27 ;; It was later rewritten by rms. Some ideas were due to Masanobu. Grand
28 ;; Unification (sdb/dbx support) by Eric S. Raymond <esr@thyrsus.com> Barry
29 ;; Warsaw <bwarsaw@cen.com> hacked the mode to use comint.el. Shane Hartman
30 ;; <shane@spr.com> added support for xdb (HPUX debugger). Rick Sladkey
31 ;; <jrs@world.std.com> wrote the GDB command completion code. Dave Love
32 ;; <d.love@dl.ac.uk> added the IRIX kluge, re-implemented the Mips-ish variant
33 ;; and added a menu. Brian D. Carlstrom <bdc@ai.mit.edu> combined the IRIX
34 ;; kluge with the gud-xdb-directories hack producing gud-dbx-directories.
35 ;; Derek L. Davies <ddavies@world.std.com> added support for jdb (Java
36 ;; debugger.)
38 ;;; Code:
57 ;; ======================================================================
58 ;; GUD commands must be visible in C buffers visited by GUD
61 "Grand Unified Debugger mode for gdb and other debuggers under Emacs.
62 Supported debuggers include gdb, sdb, dbx, xdb, perldb, pdb (Python) and jdb."
68 "Prefix of all GUD commands valid in C buffers."
91 "Return the symbol used for SYM in MINOR-MODE.
92 MINOR-MODE defaults to `gud-minor-mode'.
93 The symbol returned is `gud-<MINOR-MODE>-<SYM>'.
94 If SOFT is non-nil, returns nil if the symbol doesn't already exist."
100 "Return the value of `gud-symbol' SYM. Default to nil."
105 "Non-nil if debugged program is running.
111 ;; Use existing Info buffer, if possible.
113 "Go to relevant Emacs info node."
141 ([tooltips] menu-item "Show GUD tooltips" gud-tooltip-mode
142 :enable (and (not emacs-basic-display)
143 (display-graphic-p)
144 (fboundp 'x-show-tip))
145 :visible (memq gud-minor-mode
146 '(gdbmi dbx sdb xdb pdb))
147 :button (:toggle . gud-tooltip-mode))
148 ([refresh] "Refresh" . gud-refresh)
149 ([run] menu-item "Run" gud-run
150 :enable (not gud-running)
151 :visible (memq gud-minor-mode '(gdbmi gdb dbx jdb)))
152 ([go] menu-item (if gdb-active-process "Continue" "Run") gud-go
153 :visible (and (eq gud-minor-mode 'gdbmi)
154 (gdb-show-run-p)))
155 ([stop] menu-item "Stop" gud-stop-subjob
156 :visible (or (not (memq gud-minor-mode '(gdbmi pdb)))
157 (gdb-show-stop-p)))
158 ([until] menu-item "Continue to selection" gud-until
159 :enable (not gud-running)
160 :visible (and (memq gud-minor-mode '(gdbmi gdb perldb))
161 (gud-tool-bar-item-visible-no-fringe)))
162 ([remove] menu-item "Remove Breakpoint" gud-remove
163 :enable (not gud-running)
164 :visible (gud-tool-bar-item-visible-no-fringe))
165 ([tbreak] menu-item "Temporary Breakpoint" gud-tbreak
166 :enable (not gud-running)
167 :visible (memq gud-minor-mode
168 '(gdbmi gdb sdb xdb)))
169 ([break] menu-item "Set Breakpoint" gud-break
170 :enable (not gud-running)
171 :visible (gud-tool-bar-item-visible-no-fringe))
172 ([up] menu-item "Up Stack" gud-up
173 :enable (not gud-running)
174 :visible (memq gud-minor-mode
175 '(gdbmi gdb dbx xdb jdb pdb)))
176 ([down] menu-item "Down Stack" gud-down
177 :enable (not gud-running)
178 :visible (memq gud-minor-mode
179 '(gdbmi gdb dbx xdb jdb pdb)))
180 ([pp] menu-item "Print S-expression" gud-pp
181 :enable (and (not gud-running)
182 gdb-active-process)
183 :visible (and (string-equal
184 (buffer-local-value
185 'gud-target-name gud-comint-buffer) "emacs")
186 (eq gud-minor-mode 'gdbmi)))
187 ([print*] menu-item (if (eq gud-minor-mode 'jdb)
188 "Dump object"
189 "Print Dereference") gud-pstar
190 :enable (not gud-running)
191 :visible (memq gud-minor-mode '(gdbmi gdb jdb)))
192 ([print] menu-item "Print Expression" gud-print
193 :enable (not gud-running))
194 ([watch] menu-item "Watch Expression" gud-watch
195 :enable (not gud-running)
196 :visible (eq gud-minor-mode 'gdbmi))
197 ([finish] menu-item "Finish Function" gud-finish
198 :enable (not gud-running)
199 :visible (memq gud-minor-mode
200 '(gdbmi gdb xdb jdb pdb)))
201 ([stepi] menu-item "Step Instruction" gud-stepi
202 :enable (not gud-running)
203 :visible (memq gud-minor-mode '(gdbmi gdb dbx)))
204 ([nexti] menu-item "Next Instruction" gud-nexti
205 :enable (not gud-running)
206 :visible (memq gud-minor-mode '(gdbmi gdb dbx)))
207 ([step] menu-item "Step Line" gud-step
208 :enable (not gud-running))
209 ([next] menu-item "Next Line" gud-next
210 :enable (not gud-running))
211 ([cont] menu-item "Continue" gud-cont
212 :enable (not gud-running)
213 :visible (not (eq gud-minor-mode 'gdbmi))))
214 "Menu for `gud-mode'."
215 :name "Gud")
217 (easy-mmode-defmap gud-minor-mode-map
218 (append
219 `(([menu-bar debug] . ("Gud" . ,gud-menu-map)))
220 ;; Get tool bar like functionality from the menu bar on a text only
221 ;; terminal.
222 (unless window-system
223 `(([menu-bar down]
224 . (,(propertize "down" 'face 'font-lock-doc-face) . gud-down))
225 ([menu-bar up]
226 . (,(propertize "up" 'face 'font-lock-doc-face) . gud-up))
227 ([menu-bar finish]
228 . (,(propertize "finish" 'face 'font-lock-doc-face) . gud-finish))
229 ([menu-bar step]
230 . (,(propertize "step" 'face 'font-lock-doc-face) . gud-step))
231 ([menu-bar next]
232 . (,(propertize "next" 'face 'font-lock-doc-face) . gud-next))
233 ([menu-bar until] menu-item
234 ,(propertize "until" 'face 'font-lock-doc-face) gud-until
235 :visible (memq gud-minor-mode '(gdbmi gdb perldb)))
236 ([menu-bar cont] menu-item
237 ,(propertize "cont" 'face 'font-lock-doc-face) gud-cont
238 :visible (not (eq gud-minor-mode 'gdbmi)))
239 ([menu-bar run] menu-item
240 ,(propertize "run" 'face 'font-lock-doc-face) gud-run
241 :visible (memq gud-minor-mode '(gdbmi gdb dbx jdb)))
242 ([menu-bar go] menu-item
243 ,(propertize " go " 'face 'font-lock-doc-face) gud-go
244 :visible (and (eq gud-minor-mode 'gdbmi)
245 (gdb-show-run-p)))
246 ([menu-bar stop] menu-item
247 ,(propertize "stop" 'face 'font-lock-doc-face) gud-stop-subjob
248 :visible (or (and (eq gud-minor-mode 'gdbmi)
249 (gdb-show-stop-p))
250 (not (eq gud-minor-mode 'gdbmi))))
251 ([menu-bar print]
252 . (,(propertize "print" 'face 'font-lock-doc-face) . gud-print))
253 ([menu-bar tools] . undefined)
254 ([menu-bar buffer] . undefined)
255 ([menu-bar options] . undefined)
256 ([menu-bar edit] . undefined)
257 ([menu-bar file] . undefined))))
258 "Map used in visited files.")
260 (let ((m (assq 'gud-minor-mode minor-mode-map-alist)))
261 (if m (setcdr m gud-minor-mode-map)
262 (push (cons 'gud-minor-mode gud-minor-mode-map) minor-mode-map-alist)))
264 (defvar gud-mode-map
265 ;; Will inherit from comint-mode via define-derived-mode.
266 (make-sparse-keymap)
267 "`gud-mode' keymap.")
269 (defvar gud-tool-bar-map
270 (let ((map (make-sparse-keymap)))
271 (dolist (x '((gud-break . "gud/break")
272 (gud-remove . "gud/remove")
273 (gud-print . "gud/print")
274 (gud-pstar . "gud/pstar")
275 (gud-pp . "gud/pp")
276 (gud-watch . "gud/watch")
277 (gud-run . "gud/run")
278 (gud-go . "gud/go")
279 (gud-stop-subjob . "gud/stop")
280 (gud-cont . "gud/cont")
281 (gud-until . "gud/until")
282 (gud-next . "gud/next")
283 (gud-step . "gud/step")
284 (gud-finish . "gud/finish")
285 (gud-nexti . "gud/nexti")
286 (gud-stepi . "gud/stepi")
287 (gud-up . "gud/up")
288 (gud-down . "gud/down")
289 (gud-goto-info . "info"))
290 map)
291 (tool-bar-local-item-from-menu
292 (car x) (cdr x) map gud-minor-mode-map))))
294 (defun gud-file-name (f)
295 "Transform a relative file name to an absolute file name.
296 Uses `gud-<MINOR-MODE>-directories' to find the source files."
297 ;; When `default-directory' is a remote file name, prepend its
298 ;; remote part to f, which is the local file name. Fortunately,
299 ;; `file-remote-p' returns exactly this remote file name part (or
300 ;; nil otherwise).
301 (setq f (concat (or (file-remote-p default-directory) "") f))
302 (if (file-exists-p f) (expand-file-name f)
303 (let ((directories (gud-val 'directories))
304 (result nil))
305 (while directories
306 (let ((path (expand-file-name f (car directories))))
307 (if (file-exists-p path)
308 (setq result path
309 directories nil)))
310 (setq directories (cdr directories)))
311 result)))
313 (declare-function gdb-create-define-alist "gdb-mi" ())
315 (defun gud-find-file (file)
316 ;; Don't get confused by double slashes in the name that comes from GDB.
317 (while (string-match "//+" file)
318 (setq file (replace-match "/" t t file)))
319 (let ((minor-mode gud-minor-mode)
320 (buf (funcall (or gud-find-file 'gud-file-name) file)))
321 (when (stringp buf)
322 (setq buf (and (file-readable-p buf) (find-file-noselect buf 'nowarn))))
323 (when buf
324 ;; Copy `gud-minor-mode' to the found buffer to turn on the menu.
325 (with-current-buffer buf
326 (set (make-local-variable 'gud-minor-mode) minor-mode)
327 (set (make-local-variable 'tool-bar-map) gud-tool-bar-map)
328 (when (and gud-tooltip-mode
329 (eq gud-minor-mode 'gdbmi))
330 (make-local-variable 'gdb-define-alist)
331 (unless gdb-define-alist (gdb-create-define-alist))
332 (add-hook 'after-save-hook 'gdb-create-define-alist nil t))
333 (make-local-variable 'gud-keep-buffer))
334 buf)))
335 \f
336 ;; ======================================================================
337 ;; command definition
339 ;; This macro is used below to define some basic debugger interface commands.
340 ;; Of course you may use `gud-def' with any other debugger command, including
341 ;; user defined ones.
343 ;; A macro call like (gud-def FUNC CMD KEY DOC) expands to a form
344 ;; which defines FUNC to send the command CMD to the debugger, gives
345 ;; it the docstring DOC, and binds that function to KEY in the GUD
346 ;; major mode. The function is also bound in the global keymap with the
347 ;; GUD prefix.
349 (defmacro gud-def (func cmd key &optional doc)
350 "Define FUNC to be a command sending CMD and bound to KEY, with
351 optional doc string DOC. Certain %-escapes in the string arguments
352 are interpreted specially if present. These are:
354 %f -- Name (without directory) of current source file.
355 %F -- Name (without directory or extension) of current source file.
356 %d -- Directory of current source file.
357 %l -- Number of current source line.
358 %e -- Text of the C lvalue or function-call expression surrounding point.
359 %a -- Text of the hexadecimal address surrounding point.
360 %p -- Prefix argument to the command (if any) as a number.
361 %c -- Fully qualified class name derived from the expression
362 surrounding point (jdb only).
364 The `current' source file is the file of the current buffer (if
365 we're in a C file) or the source file current at the last break or
366 step (if we're in the GUD buffer).
367 The `current' line is that of the current buffer (if we're in a
368 source file) or the source line number at the last break or step (if
369 we're in the GUD buffer)."
370 `(progn
371 (defalias ',func (lambda (arg)
372 ,@(if doc (list doc))
373 (interactive "p")
374 (if (not gud-running)
375 ,(if (stringp cmd)
376 `(gud-call ,cmd arg)
377 cmd))))
378 ,(if key `(local-set-key ,(concat "\C-c" key) ',func))
379 ,(if key `(global-set-key (vconcat gud-key-prefix ,key) ',func))))
381 ;; Where gud-display-frame should put the debugging arrow; a cons of
382 ;; (filename . line-number). This is set by the marker-filter, which scans
383 ;; the debugger's output for indications of the current program counter.
384 (defvar gud-last-frame nil)
386 ;; Used by gud-refresh, which should cause gud-display-frame to redisplay
387 ;; the last frame, even if it's been called before and gud-last-frame has
388 ;; been set to nil.
389 (defvar gud-last-last-frame nil)
391 ;; All debugger-specific information is collected here.
392 ;; Here's how it works, in case you ever need to add a debugger to the mode.
393 ;;
394 ;; Each entry must define the following at startup:
395 ;;
396 ;;<name>
397 ;; comint-prompt-regexp
398 ;; gud-<name>-massage-args
399 ;; gud-<name>-marker-filter
400 ;; gud-<name>-find-file
401 ;;
402 ;; The job of the massage-args method is to modify the given list of
403 ;; debugger arguments before running the debugger.
404 ;;
405 ;; The job of the marker-filter method is to detect file/line markers in
406 ;; strings and set the global gud-last-frame to indicate what display
407 ;; action (if any) should be triggered by the marker. Note that only
408 ;; whatever the method *returns* is displayed in the buffer; thus, you
409 ;; can filter the debugger's output, interpreting some and passing on
410 ;; the rest.
411 ;;
412 ;; The job of the find-file method is to visit and return the buffer indicated
413 ;; by the car of gud-tag-frame. This may be a file name, a tag name, or
414 ;; something else.
415 \f
416 ;; ======================================================================
417 ;; speedbar support functions and variables.
418 (eval-when-compile (require 'speedbar)) ;For speedbar-with-attached-buffer.
420 (defvar gud-last-speedbar-stackframe nil
421 "Description of the currently displayed GUD stack.
422 The value t means that there is no stack, and we are in display-file mode.")
424 (defvar gud-speedbar-key-map nil
425 "Keymap used when in the buffers display mode.")
427 (defun gud-speedbar-item-info ()
428 "Display the data type of the watch expression element."
429 (let ((var (nth (- (line-number-at-pos (point)) 2) gdb-var-list)))
430 (if (nth 7 var)
431 (speedbar-message "%s: %s" (nth 7 var) (nth 3 var))
432 (speedbar-message "%s" (nth 3 var)))))
434 (defun gud-install-speedbar-variables ()
435 "Install those variables used by speedbar to enhance gud/gdb."
436 (if gud-speedbar-key-map
437 nil
438 (setq gud-speedbar-key-map (speedbar-make-specialized-keymap))
440 (define-key gud-speedbar-key-map "j" 'speedbar-edit-line)
441 (define-key gud-speedbar-key-map "e" 'speedbar-edit-line)
442 (define-key gud-speedbar-key-map "\C-m" 'speedbar-edit-line)
443 (define-key gud-speedbar-key-map " " 'speedbar-toggle-line-expansion)
444 (define-key gud-speedbar-key-map "D" 'gdb-var-delete)
445 (define-key gud-speedbar-key-map "p" 'gud-pp))
447 (speedbar-add-expansion-list '("GUD" gud-speedbar-menu-items
448 gud-speedbar-key-map
449 gud-expansion-speedbar-buttons))
451 (add-to-list
452 'speedbar-mode-functions-list
453 '("GUD" (speedbar-item-info . gud-speedbar-item-info)
454 (speedbar-line-directory . ignore))))
456 (defvar gud-speedbar-menu-items
457 '(["Jump to stack frame" speedbar-edit-line
458 :visible (not (eq (buffer-local-value 'gud-minor-mode gud-comint-buffer)
459 'gdbmi))]
460 ["Edit value" speedbar-edit-line
461 :visible (eq (buffer-local-value 'gud-minor-mode gud-comint-buffer)
462 'gdbmi)]
463 ["Delete expression" gdb-var-delete
464 :visible (eq (buffer-local-value 'gud-minor-mode gud-comint-buffer)
465 'gdbmi)]
466 ["Auto raise frame" gdb-speedbar-auto-raise
467 :style toggle :selected gdb-speedbar-auto-raise
468 :visible (eq (buffer-local-value 'gud-minor-mode gud-comint-buffer)
469 'gdbmi)]
470 ("Output Format"
471 :visible (eq (buffer-local-value 'gud-minor-mode gud-comint-buffer)
472 'gdbmi)
473 ["Binary" (gdb-var-set-format "binary") t]
474 ["Natural" (gdb-var-set-format "natural") t]
475 ["Hexadecimal" (gdb-var-set-format "hexadecimal") t]))
476 "Additional menu items to add to the speedbar frame.")
478 ;; Make sure our special speedbar mode is loaded
479 (if (featurep 'speedbar)
480 (gud-install-speedbar-variables)
481 (add-hook 'speedbar-load-hook 'gud-install-speedbar-variables))
483 (defun gud-expansion-speedbar-buttons (_directory _zero)
484 "Wrapper for call to `speedbar-add-expansion-list'.
485 DIRECTORY and ZERO are not used, but are required by the caller."
486 (gud-speedbar-buttons gud-comint-buffer))
488 (defun gud-speedbar-buttons (buffer)
489 "Create a speedbar display based on the current state of GUD.
490 If the GUD BUFFER is not running a supported debugger, then turn
491 off the specialized speedbar mode. BUFFER is not used, but is
492 required by the caller."
493 (when (and gud-comint-buffer
494 ;; gud-comint-buffer might be killed
495 (buffer-name gud-comint-buffer))
496 (let* ((minor-mode (with-current-buffer buffer gud-minor-mode))
497 (window (get-buffer-window (current-buffer) 0))
498 (start (window-start window))
499 (p (window-point window)))
500 (cond
501 ((eq minor-mode 'gdbmi)
502 (erase-buffer)
504 (let ((var-list gdb-var-list) parent)
505 (while var-list
506 (let* (char (depth 0) (start 0) (var (car var-list))
507 (varnum (car var)) (expr (nth 1 var))
508 (type (if (nth 3 var) (nth 3 var) " "))
509 (value (nth 4 var)) (status (nth 5 var))
510 (has-more (nth 6 var)))
511 (put-text-property
512 0 (length expr) 'face font-lock-variable-name-face expr)
513 (put-text-property
514 0 (length type) 'face font-lock-type-face type)
516 (setq depth (1+ depth)
517 start (1+ (match-beginning 0))))
518 (if (eq depth 0) (setq parent nil))
519 (if (and (or (not has-more) (string-equal has-more "0"))
520 (or (equal (nth 2 var) "0")
521 (and (equal (nth 2 var) "1")
523 (speedbar-make-tag-line
524 'bracket ?? nil nil
526 (if (or parent (eq status 'out-of-scope))
527 nil 'gdb-edit-value)
528 nil
529 (if gdb-show-changed-values
530 (or parent (case status
531 (changed 'font-lock-warning-face)
532 (out-of-scope 'shadow)
533 (t t)))
534 t)
535 depth)
536 (if (eq status 'out-of-scope) (setq parent 'shadow))
537 (if (and (nth 1 var-list)
539 (car (nth 1 var-list))))
540 (setq char ?-)
541 (setq char ?+))
543 (speedbar-make-tag-line
544 'bracket char
545 'gdb-speedbar-expand-node varnum
547 (if (or parent (eq status 'out-of-scope))
548 nil 'gdb-edit-value)
549 nil
550 (if gdb-show-changed-values
551 (or parent (case status
552 (changed 'font-lock-warning-face)
553 (out-of-scope 'shadow)
554 (t t)))
555 t)
556 depth)
557 (speedbar-make-tag-line
558 'bracket char
559 'gdb-speedbar-expand-node varnum
561 nil nil
562 (if (and (or parent status) gdb-show-changed-values)
563 'shadow t)
564 depth))))
565 (setq var-list (cdr var-list)))))
566 (t (unless (and (save-excursion
567 (goto-char (point-min))
568 (looking-at "Current Stack:"))
569 (equal gud-last-last-frame gud-last-speedbar-stackframe))
570 (let ((gud-frame-list
571 (cond ((eq minor-mode 'gdb)
572 (gud-gdb-get-stackframe buffer))
573 ;; Add more debuggers here!
574 (t (speedbar-remove-localized-speedbar-support buffer)
575 nil))))
576 (erase-buffer)
577 (if (not gud-frame-list)
580 (dolist (frame gud-frame-list)
582 (if (= (length frame) 2)
583 (progn
584 (speedbar-insert-button (car frame)
585 'speedbar-directory-face
586 nil nil nil t))
587 (speedbar-insert-button
588 (car frame)
589 'speedbar-file-face
590 'speedbar-highlight-face
591 (cond ((memq minor-mode '(gdbmi gdb))
592 'gud-gdb-goto-stackframe)
593 (t (error "Should never be here")))
594 frame t))))
595 (setq gud-last-speedbar-stackframe gud-last-last-frame))))
596 (set-window-start window start)
597 (set-window-point window p))))
599 \f
600 ;; ======================================================================
601 ;; gdb functions
603 ;; History of argument lists passed to gdb.
604 (defvar gud-gdb-history nil)
606 (defcustom gud-gud-gdb-command-name "gdb --fullname"
607 "Default command to run an executable under GDB in text command mode.
609 :type 'string
610 :group 'gud)
612 (defvar gud-gdb-marker-regexp
613 ;; This used to use path-separator instead of ":";
614 ;; however, we found that on both Windows 32 and MSDOS
615 ;; a colon is correct here.
619 ;; There's no guarantee that Emacs will hand the filter the entire
620 ;; marker at once; it could be broken up across several strings. We
621 ;; might even receive a big chunk with several markers in it. If we
622 ;; receive a chunk of text which looks like it might contain the
623 ;; beginning of a marker, we save it here between calls to the
624 ;; filter.
625 (defvar gud-marker-acc "")
626 (make-variable-buffer-local 'gud-marker-acc)
628 (defun gud-gdb-marker-filter (string)
629 (setq gud-marker-acc (concat gud-marker-acc string))
630 (let ((output ""))
632 ;; Process all the complete markers in this chunk.
633 (while (string-match gud-gdb-marker-regexp gud-marker-acc)
634 (setq
636 ;; Extract the frame position from the marker.
637 gud-last-frame (cons (match-string 1 gud-marker-acc)
638 (string-to-number (match-string 2 gud-marker-acc)))
640 ;; Append any text before the marker to the output we're going
641 ;; to return - we don't include the marker in this text.
642 output (concat output
643 (substring gud-marker-acc 0 (match-beginning 0)))
645 ;; Set the accumulator to the remaining text.
646 gud-marker-acc (substring gud-marker-acc (match-end 0))))
649 (setq
650 ;; Append any text before the marker to the output we're going
651 ;; to return - we don't include the marker in this text.
652 output (concat output
653 (substring gud-marker-acc 0 (match-beginning 0)))
655 ;; Set the accumulator to the remaining text.
657 gud-marker-acc (substring gud-marker-acc (match-end 0))))
659 ;; Does the remaining text look like it might end with the
660 ;; beginning of another marker? If it does, then keep it in
661 ;; gud-marker-acc until we receive the rest of it. Since we
662 ;; know the full marker regexp above failed, it's pretty simple to
663 ;; test for marker starts.
665 (progn
666 ;; Everything before the potential marker start can be output.
667 (setq output (concat output (substring gud-marker-acc
668 0 (match-beginning 0))))
670 ;; Everything after, we save, to combine with later input.
671 (setq gud-marker-acc
672 (substring gud-marker-acc (match-beginning 0))))
674 (setq output (concat output gud-marker-acc)
675 gud-marker-acc ""))
677 output))
679 (easy-mmode-defmap gud-minibuffer-local-map
680 '(("\C-i" . comint-dynamic-complete-filename))
681 "Keymap for minibuffer prompting of gud startup command."
682 :inherit minibuffer-local-map)
684 (defun gud-query-cmdline (minor-mode &optional init)
685 (let* ((hist-sym (gud-symbol 'history nil minor-mode))
686 (cmd-name (gud-val 'command-name minor-mode)))
687 (unless (boundp hist-sym) (set hist-sym nil))
688 (read-from-minibuffer
689 (format "Run %s (like this): " minor-mode)
690 (or (car-safe (symbol-value hist-sym))
691 (concat (or cmd-name (symbol-name minor-mode))
692 " "
693 (or init
694 (let ((file nil))
695 (dolist (f (directory-files default-directory) file)
696 (if (and (file-executable-p f)
697 (not (file-directory-p f))
698 (or (not file)
699 (file-newer-than-file-p f file)))
700 (setq file f)))))))
701 gud-minibuffer-local-map nil
702 hist-sym)))
704 (defvar gdb-first-prompt t)
706 (defvar gud-filter-pending-text nil
707 "Non-nil means this is text that has been saved for later in `gud-filter'.")
709 ;; If in gdb mode, gdb-mi is loaded.
710 (declare-function gdb-restore-windows "gdb-mi" ())
712 ;; The old gdb command (text command mode). The new one is in gdb-mi.el.
713 ;;;###autoload
714 (defun gud-gdb (command-line)
715 "Run gdb on program FILE in buffer *gud-FILE*.
716 The directory containing FILE becomes the initial working
717 directory and source-file directory for your debugger."
718 (interactive (list (gud-query-cmdline 'gud-gdb)))
720 (when (and gud-comint-buffer
721 (buffer-name gud-comint-buffer)
722 (get-buffer-process gud-comint-buffer)
723 (with-current-buffer gud-comint-buffer (eq gud-minor-mode 'gdbmi)))
724 (gdb-restore-windows)
725 (error
726 "Multiple debugging requires restarting in text command mode"))
728 (gud-common-init command-line nil 'gud-gdb-marker-filter)
729 (set (make-local-variable 'gud-minor-mode) 'gdb)
731 (gud-def gud-break "break %f:%l" "\C-b" "Set breakpoint at current line.")
732 (gud-def gud-tbreak "tbreak %f:%l" "\C-t"
733 "Set temporary breakpoint at current line.")
734 (gud-def gud-remove "clear %f:%l" "\C-d" "Remove breakpoint at current line")
735 (gud-def gud-step "step %p" "\C-s" "Step one source line with display.")
736 (gud-def gud-stepi "stepi %p" "\C-i" "Step one instruction with display.")
737 (gud-def gud-next "next %p" "\C-n" "Step one line (skip functions).")
738 (gud-def gud-nexti "nexti %p" nil "Step one instruction (skip functions).")
739 (gud-def gud-cont "cont" "\C-r" "Continue with display.")
740 (gud-def gud-finish "finish" "\C-f" "Finish executing current function.")
741 (gud-def gud-jump
742 (progn (gud-call "tbreak %f:%l") (gud-call "jump %f:%l"))
743 "\C-j" "Set execution address to current line.")
745 (gud-def gud-up "up %p" "<" "Up N stack frames (numeric arg).")
746 (gud-def gud-down "down %p" ">" "Down N stack frames (numeric arg).")
747 (gud-def gud-print "print %e" "\C-p" "Evaluate C expression at point.")
748 (gud-def gud-pstar "print* %e" nil
749 "Evaluate C dereferenced pointer expression at point.")
751 ;; For debugging Emacs only.
752 (gud-def gud-pv "pv %e" "\C-v" "Print the value of the lisp variable.")
754 (gud-def gud-until "until %l" "\C-u" "Continue to current line.")
755 (gud-def gud-run "run" nil "Run the program.")
757 (add-hook 'completion-at-point-functions #'gud-gdb-completion-at-point
758 nil 'local)
759 (set (make-local-variable 'gud-gdb-completion-function) 'gud-gdb-completions)
761 (local-set-key "\C-i" 'completion-at-point)
762 (setq comint-prompt-regexp "^(.*gdb[+]?) *")
763 (setq paragraph-start comint-prompt-regexp)
764 (setq gdb-first-prompt t)
765 (setq gud-running nil)
766 (setq gud-filter-pending-text nil)
767 (run-hooks 'gud-gdb-mode-hook))
769 ;; One of the nice features of GDB is its impressive support for
770 ;; context-sensitive command completion. We preserve that feature
771 ;; in the GUD buffer by using a GDB command designed just for Emacs.
773 (defvar gud-gdb-completion-function nil
774 "Completion function for GDB commands.
775 It receives two arguments: COMMAND, the prefix for which we seek
776 completion; and CONTEXT, the text before COMMAND on the line.
777 It should return a list of completion strings.")
779 ;; The completion process filter indicates when it is finished.
780 (defvar gud-gdb-fetch-lines-in-progress)
782 ;; Since output may arrive in fragments we accumulate partials strings here.
783 (defvar gud-gdb-fetch-lines-string)
785 ;; We need to know how much of the completion to chop off.
786 (defvar gud-gdb-fetch-lines-break)
788 ;; The completion list is constructed by the process filter.
789 (defvar gud-gdb-fetched-lines)
791 (defun gud-gdb-completions (context command)
792 "Completion table for GDB commands.
793 COMMAND is the prefix for which we seek completion.
794 CONTEXT is the text before COMMAND on the line."
795 (let* ((start (- (point) (field-beginning)))
796 (complete-list
797 (gud-gdb-run-command-fetch-lines (concat "complete " context command)
798 (current-buffer)
799 ;; From string-match above.
800 (length context))))
801 ;; `gud-gdb-run-command-fetch-lines' has some nasty side-effects on the
802 ;; buffer (via `gud-delete-prompt-marker'): it removes the prompt and then
803 ;; re-adds it later, thus messing up markers and overlays along the way.
804 ;; This is a problem for completion-in-region which uses an overlay to
805 ;; create a field.
806 ;; So we restore completion-in-region's field if needed.
807 ;; FIXME: change gud-gdb-run-command-fetch-lines so it doesn't modify the
808 ;; buffer at all.
809 (when (/= start (- (point) (field-beginning)))
810 (dolist (ol (overlays-at (1- (point))))
811 (when (eq (overlay-get ol 'field) 'completion)
812 (move-overlay ol (- (point) start) (overlay-end ol)))))
813 ;; Protect against old versions of GDB.
814 (and complete-list
816 (error "This version of GDB doesn't support the `complete' command"))
817 (gud-gdb-completions-1 complete-list)))
819 ;; This function is also used by `gud-gdbmi-completions'.
820 (defun gud-gdb-completions-1 (complete-list)
821 ;; Sort the list like readline.
822 (setq complete-list (sort complete-list (function string-lessp)))
823 ;; Remove duplicates.
824 (let ((first complete-list)
825 (second (cdr complete-list)))
826 (while second
827 (if (string-equal (car first) (car second))
828 (setcdr first (setq second (cdr second)))
829 (setq first second
830 second (cdr second)))))
831 ;; Add a trailing single quote if there is a unique completion
832 ;; and it contains an odd number of unquoted single quotes.
833 (and (= (length complete-list) 1)
834 (let ((str (car complete-list))
835 (pos 0)
836 (count 0))
838 (setq count (1+ count)
839 pos (match-end 0)))
840 (and (= (mod count 2) 1)
841 (setq complete-list (list (concat str "'"))))))
842 complete-list)
844 (defun gud-gdb-completion-at-point ()
845 "Return the data to complete the GDB command before point."
846 (let ((end (point))
847 (start
848 (save-excursion
849 (skip-chars-backward "^ " (comint-line-beginning-position))
850 (point))))
851 (list start end
852 (completion-table-dynamic
853 (apply-partially gud-gdb-completion-function
854 (buffer-substring (comint-line-beginning-position)
855 start))))))
857 ;; (defun gud-gdb-complete-command ()
858 ;; "Perform completion on the GDB command preceding point.
859 ;; This is implemented using the GDB `complete' command which isn't
860 ;; available with older versions of GDB."
861 ;; (interactive)
862 ;; (apply #'completion-in-region (gud-gdb-completion-at-point)))
864 ;; The completion process filter is installed temporarily to slurp the
865 ;; output of GDB up to the next prompt and build the completion list.
866 (defun gud-gdb-fetch-lines-filter (string)
867 "Filter used to read the list of lines output by a command.
868 STRING is the output to filter.
869 It is passed through `gud-gdb-marker-filter' before we look at it."
870 (setq string (gud-gdb-marker-filter string))
871 (setq string (concat gud-gdb-fetch-lines-string string))
873 (push (substring string gud-gdb-fetch-lines-break (match-beginning 0))
874 gud-gdb-fetched-lines)
875 (setq string (substring string (match-end 0))))
876 (if (string-match comint-prompt-regexp string)
877 (progn
878 (setq gud-gdb-fetch-lines-in-progress nil)
879 string)
880 (progn
881 (setq gud-gdb-fetch-lines-string string)
882 "")))
884 ;; gdb speedbar functions
886 (defun gud-gdb-goto-stackframe (_text token _indent)
887 "Goto the stackframe described by TEXT, TOKEN, and INDENT."
888 (speedbar-with-attached-buffer
889 (gud-basic-call (concat "server frame " (nth 1 token)))
890 (sit-for 1)))
892 (defvar gud-gdb-fetched-stack-frame nil
893 "Stack frames we are fetching from GDB.")
895 (defun gud-gdb-get-stackframe (buffer)
896 "Extract the current stack frame out of the GUD GDB BUFFER."
897 (let ((newlst nil)
898 (fetched-stack-frame-list
899 (gud-gdb-run-command-fetch-lines "server backtrace" buffer)))
900 (if (and (car fetched-stack-frame-list)
901 (string-match "No stack" (car fetched-stack-frame-list)))
902 ;; Go into some other mode???
903 nil
904 (dolist (e fetched-stack-frame-list)
905 (let ((name nil) (num nil))
906 (if (not (or
909 (if (not (string-match
911 nil
912 (setcar newlst
913 (list (nth 0 (car newlst))
914 (nth 1 (car newlst))
915 (match-string 1 e)
916 (match-string 2 e))))
917 (setq num (match-string 1 e)
918 name (match-string 2 e))
919 (setq newlst
920 (cons
921 (if (string-match
923 (list name num (match-string 1 e)
924 (match-string 2 e))
925 (list name num))
926 newlst)))))
927 (nreverse newlst))))
929 ;(defun gud-gdb-selected-frame-info (buffer)
930 ; "Learn GDB information for the currently selected stack frame in BUFFER."
931 ; )
933 (defun gud-gdb-run-command-fetch-lines (command buffer &optional skip)
934 "Run COMMAND, and return the list of lines it outputs.
935 BUFFER is the current buffer which may be the GUD buffer in which to run.
936 SKIP is the number of chars to skip on each line, it defaults to 0."
937 (with-current-buffer gud-comint-buffer
938 (unless (and (eq gud-comint-buffer buffer)
939 (save-excursion
940 (goto-char (point-max))
941 (forward-line 0)
942 (not (looking-at comint-prompt-regexp))))
943 (let ((gud-gdb-fetch-lines-in-progress t)
944 (gud-gdb-fetched-lines nil)
945 (gud-gdb-fetch-lines-string nil)
946 (gud-gdb-fetch-lines-break (or skip 0))
947 (gud-marker-filter #'gud-gdb-fetch-lines-filter))
948 ;; Issue the command to GDB.
949 (gud-basic-call command)
950 ;; Slurp the output.
951 (while gud-gdb-fetch-lines-in-progress
952 (accept-process-output (get-buffer-process gud-comint-buffer)))
953 (nreverse gud-gdb-fetched-lines)))))
955 \f
956 ;; ======================================================================
957 ;; sdb functions
959 ;; History of argument lists passed to sdb.
960 (defvar gud-sdb-history nil)
962 (defvar gud-sdb-needs-tags (not (file-exists-p "/var"))
963 "If nil, we're on a System V Release 4 and don't need the tags hack.")
965 (defvar gud-sdb-lastfile nil)
967 (defun gud-sdb-marker-filter (string)
968 (setq gud-marker-acc
969 (if gud-marker-acc (concat gud-marker-acc string) string))
970 (let (start)
971 ;; Process all complete markers in this chunk
972 (while
973 (cond
974 ;; System V Release 3.2 uses this format
976 gud-marker-acc start)
977 (setq gud-last-frame
978 (cons (match-string 3 gud-marker-acc)
979 (string-to-number (match-string 4 gud-marker-acc)))))
980 ;; System V Release 4.0 quite often clumps two lines together
981 ((string-match "^\\(BREAKPOINT\\|STEPPED\\) process [0-9]+ function [^ ]+ in \\(.+\\)\n\\([0-9]+\\):"
982 gud-marker-acc start)
983 (setq gud-sdb-lastfile (match-string 2 gud-marker-acc))
984 (setq gud-last-frame
985 (cons gud-sdb-lastfile
986 (string-to-number (match-string 3 gud-marker-acc)))))
987 ;; System V Release 4.0
989 gud-marker-acc start)
990 (setq gud-sdb-lastfile (match-string 2 gud-marker-acc)))
992 gud-marker-acc start))
993 (setq gud-last-frame
994 (cons gud-sdb-lastfile
995 (string-to-number (match-string 1 gud-marker-acc)))))
996 (t
997 (setq gud-sdb-lastfile nil)))
998 (setq start (match-end 0)))
1000 ;; Search for the last incomplete line in this chunk
1002 (setq start (match-end 0)))
1004 ;; If we have an incomplete line, store it in gud-marker-acc.
1005 (setq gud-marker-acc (substring gud-marker-acc (or start 0))))
1006 string)
1008 (defun gud-sdb-find-file (f)
1009 (if gud-sdb-needs-tags (find-tag-noselect f) (find-file-noselect f)))
1011 ;;;###autoload
1012 (defun sdb (command-line)
1013 "Run sdb on program FILE in buffer *gud-FILE*.
1014 The directory containing FILE becomes the initial working directory
1015 and source-file directory for your debugger."
1016 (interactive (list (gud-query-cmdline 'sdb)))
1018 (if gud-sdb-needs-tags (require 'etags))
1019 (if (and gud-sdb-needs-tags
1020 (not (and (boundp 'tags-file-name)
1021 (stringp tags-file-name)
1022 (file-exists-p tags-file-name))))
1023 (error "The sdb support requires a valid tags table to work"))
1025 (gud-common-init command-line nil 'gud-sdb-marker-filter 'gud-sdb-find-file)
1026 (set (make-local-variable 'gud-minor-mode) 'sdb)
1028 (gud-def gud-break "%l b" "\C-b" "Set breakpoint at current line.")
1029 (gud-def gud-tbreak "%l c" "\C-t" "Set temporary breakpoint at current line.")
1030 (gud-def gud-remove "%l d" "\C-d" "Remove breakpoint at current line")
1031 (gud-def gud-step "s %p" "\C-s" "Step one source line with display.")
1032 (gud-def gud-stepi "i %p" "\C-i" "Step one instruction with display.")
1033 (gud-def gud-next "S %p" "\C-n" "Step one line (skip functions).")
1034 (gud-def gud-cont "c" "\C-r" "Continue with display.")
1035 (gud-def gud-print "%e/" "\C-p" "Evaluate C expression at point.")
1038 (setq paragraph-start comint-prompt-regexp)
1039 (run-hooks 'sdb-mode-hook)
1040 )
1041 \f
1042 ;; ======================================================================
1043 ;; dbx functions
1045 ;; History of argument lists passed to dbx.
1046 (defvar gud-dbx-history nil)
1048 (defcustom gud-dbx-directories nil
1049 "*A list of directories that dbx should search for source code.
1050 If nil, only source files in the program directory
1051 will be known to dbx.
1053 The file names should be absolute, or relative to the directory
1054 containing the executable being debugged."
1055 :type '(choice (const :tag "Current Directory" nil)
1056 (repeat :value ("")
1057 directory))
1058 :group 'gud)
1060 (defun gud-dbx-massage-args (_file args)
1061 (nconc (let ((directories gud-dbx-directories)
1062 (result nil))
1063 (while directories
1064 (setq result (cons (car directories) (cons "-I" result)))
1065 (setq directories (cdr directories)))
1066 (nreverse result))
1067 args))
1069 (defun gud-dbx-marker-filter (string)
1070 (setq gud-marker-acc (if gud-marker-acc (concat gud-marker-acc string) string))
1072 (let (start)
1073 ;; Process all complete markers in this chunk.
1074 (while (or (string-match
1076 gud-marker-acc start)
1077 (string-match
1079 gud-marker-acc start))
1080 (setq gud-last-frame
1081 (cons (match-string 2 gud-marker-acc)
1082 (string-to-number (match-string 1 gud-marker-acc)))
1083 start (match-end 0)))
1085 ;; Search for the last incomplete line in this chunk
1087 (setq start (match-end 0)))
1089 ;; If the incomplete line APPEARS to begin with another marker, keep it
1090 ;; in the accumulator. Otherwise, clear the accumulator to avoid an
1091 ;; unnecessary concat during the next call.
1092 (setq gud-marker-acc
1094 (substring gud-marker-acc (match-beginning 0))
1095 nil)))
1096 string)
1098 ;; Functions for Mips-style dbx. Given the option `-emacs', documented in
1099 ;; OSF1, not necessarily elsewhere, it produces markers similar to gdb's.
1100 (defvar gud-mips-p
1101 (or (string-match "^mips-[^-]*-ultrix" system-configuration)
1102 ;; We haven't tested gud on this system:
1103 (string-match "^mips-[^-]*-riscos" system-configuration)
1104 ;; It's documented on OSF/1.3
1105 (string-match "^mips-[^-]*-osf1" system-configuration)
1106 (string-match "^alpha[^-]*-[^-]*-osf" system-configuration))
1107 "Non-nil to assume the MIPS/OSF dbx conventions (argument `-emacs').")
1109 (defvar gud-dbx-command-name
1110 (concat "dbx" (if gud-mips-p " -emacs")))
1112 ;; This is just like the gdb one except for the regexps since we need to cope
1113 ;; with an optional breakpoint number in [] before the ^Z^Z
1114 (defun gud-mipsdbx-marker-filter (string)
1115 (setq gud-marker-acc (concat gud-marker-acc string))
1116 (let ((output ""))
1118 ;; Process all the complete markers in this chunk.
1119 (while (string-match
1120 ;; This is like th gdb marker but with an optional
1121 ;; leading break point number like `[1] '
1123 gud-marker-acc)
1124 (setq
1126 ;; Extract the frame position from the marker.
1127 gud-last-frame
1128 (cons (match-string 1 gud-marker-acc)
1129 (string-to-number (match-string 2 gud-marker-acc)))
1131 ;; Append any text before the marker to the output we're going
1132 ;; to return - we don't include the marker in this text.
1133 output (concat output
1134 (substring gud-marker-acc 0 (match-beginning 0)))
1136 ;; Set the accumulator to the remaining text.
1137 gud-marker-acc (substring gud-marker-acc (match-end 0))))
1139 ;; Does the remaining text look like it might end with the
1140 ;; beginning of another marker? If it does, then keep it in
1141 ;; gud-marker-acc until we receive the rest of it. Since we
1142 ;; know the full marker regexp above failed, it's pretty simple to
1143 ;; test for marker starts.
1145 (progn
1146 ;; Everything before the potential marker start can be output.
1147 (setq output (concat output (substring gud-marker-acc
1148 0 (match-beginning 0))))
1150 ;; Everything after, we save, to combine with later input.
1151 (setq gud-marker-acc
1152 (substring gud-marker-acc (match-beginning 0))))
1154 (setq output (concat output gud-marker-acc)
1155 gud-marker-acc ""))
1157 output))
1159 ;; The dbx in IRIX is a pain. It doesn't print the file name when
1160 ;; stopping at a breakpoint (but you do get it from the `up' and
1161 ;; `down' commands...). The only way to extract the information seems
1162 ;; to be with a `file' command, although the current line number is
1163 ;; available in $curline. Thus we have to look for output which
1164 ;; appears to indicate a breakpoint. Then we prod the dbx sub-process
1165 ;; to output the information we want with a combination of the
1166 ;; `printf' and `file' commands as a pseudo marker which we can
1167 ;; recognize next time through the marker-filter. This would be like
1168 ;; the gdb marker but you can't get the file name without a newline...
1169 ;; Note that gud-remove won't work since Irix dbx expects a breakpoint
1170 ;; number rather than a line number etc. Maybe this could be made to
1171 ;; work by listing all the breakpoints and picking the one(s) with the
1172 ;; correct line number, but life's too short.
1173 ;; d.love@dl.ac.uk (Dave Love) can be blamed for this
1175 (defvar gud-irix-p
1176 (and (string-match "^mips-[^-]*-irix" system-configuration)
1178 "Non-nil to assume the interface appropriate for IRIX dbx.
1179 This works in IRIX 4, 5 and 6, but `gud-dbx-use-stopformat-p' provides
1180 a better solution in 6.1 upwards.")
1181 (defvar gud-dbx-use-stopformat-p
1183 "Non-nil to use the dbx feature present at least from Irix 6.1
1184 whereby $stopformat=1 produces an output format compatible with
1185 `gud-dbx-marker-filter'.")
1186 ;; [Irix dbx seems to be a moving target. The dbx output changed
1187 ;; subtly sometime between OS v4.0.5 and v5.2 so that, for instance,
1188 ;; the output from `up' is no longer spotted by gud (and it's probably
1189 ;; not distinctive enough to try to match it -- use C-<, C->
1190 ;; exclusively) . For 5.3 and 6.0, the $curline variable changed to
1191 ;; `long long'(why?!), so the printf stuff needed changing. The line
1192 ;; number was cast to `long' as a compromise between the new `long
1193 ;; long' and the original `int'. This is reported not to work in 6.2,
1194 ;; so it's changed back to int -- don't make your sources too long.
1195 ;; From Irix6.1 (but not 6.0?) dbx supports an undocumented feature
1196 ;; whereby `set $stopformat=1' reportedly produces output compatible
1197 ;; with `gud-dbx-marker-filter', which we prefer.
1199 ;; The process filter is also somewhat
1200 ;; unreliable, sometimes not spotting the markers; I don't know
1201 ;; whether there's anything that can be done about that. It would be
1202 ;; much better if SGI could be persuaded to (re?)instate the MIPS
1203 ;; -emacs flag for gdb-like output (which ought to be possible as most
1204 ;; of the communication I've had over it has been from sgi.com).]
1206 ;; this filter is influenced by the xdb one rather than the gdb one
1207 (defun gud-irixdbx-marker-filter (string)
1208 (let (result (case-fold-search nil))
1209 (if (or (string-match comint-prompt-regexp string)
1211 (setq result (concat gud-marker-acc string)
1212 gud-marker-acc "")
1213 (setq gud-marker-acc (concat gud-marker-acc string)))
1214 (if result
1215 (cond
1216 ;; look for breakpoint or signal indication e.g.:
1217 ;; [2] Process 1267 (pplot) stopped at [params:338 ,0x400ec0]
1218 ;; Process 1281 (pplot) stopped at [params:339 ,0x400ec8]
1219 ;; Process 1270 (pplot) Floating point exception [._read._read:16 ,0x452188]
1220 ((string-match
1222 result)
1223 ;; prod dbx into printing out the line number and file
1224 ;; name in a form we can grok as below
1225 (process-send-string (get-buffer-process gud-comint-buffer)
1227 ;; look for result of, say, "up" e.g.:
1228 ;; .pplot.pplot(0x800) ["src/pplot.f":261, 0x400c7c]
1229 ;; (this will also catch one of the lines printed by "where")
1230 ((string-match
1232 result)
1233 (let ((file (match-string 1 result)))
1234 (if (file-exists-p file)
1235 (setq gud-last-frame
1236 (cons (match-string 1 result)
1237 (string-to-number (match-string 2 result))))))
1238 result)
1239 ((string-match ; kluged-up marker as above
1241 (let ((file (gud-file-name (match-string 2 result))))
1242 (if (and file (file-exists-p file))
1243 (setq gud-last-frame
1244 (cons file
1245 (string-to-number (match-string 1 result))))))
1246 (setq result (substring result 0 (match-beginning 0))))))
1247 (or result "")))
1249 ;; There are a couple of differences between DG's dbx output and normal
1250 ;; dbx output which make it nontrivial to integrate this into the
1251 ;; standard dbx-marker-filter (mainly, there are a different number of
1252 ;; backreferences). The markers look like:
1253 ;;
1254 ;; (0) Stopped at line 10, routine main(argc=1, argv=0xeffff0e0), file t.c
1255 ;;
1256 ;; from breakpoints (the `(0)' there isn't constant, it's the breakpoint
1257 ;; number), and
1258 ;;
1259 ;; Stopped at line 13, routine main(argc=1, argv=0xeffff0e0), file t.c
1260 ;;
1261 ;; from signals and
1262 ;;
1263 ;; Frame 21, line 974, routine command_loop(), file keyboard.c
1264 ;;
1265 ;; from up/down/where.
1267 (defun gud-dguxdbx-marker-filter (string)
1268 (setq gud-marker-acc (if gud-marker-acc
1269 (concat gud-marker-acc string)
1270 string))
1273 start)
1274 ;; Process all complete markers in this chunk.
1275 (while (string-match re gud-marker-acc start)
1276 (setq gud-last-frame
1277 (cons (match-string 4 gud-marker-acc)
1278 (string-to-number (match-string 3 gud-marker-acc)))
1279 start (match-end 0)))
1281 ;; Search for the last incomplete line in this chunk
1283 (setq start (match-end 0)))
1285 ;; If the incomplete line APPEARS to begin with another marker, keep it
1286 ;; in the accumulator. Otherwise, clear the accumulator to avoid an
1287 ;; unnecessary concat during the next call.
1288 (setq gud-marker-acc
1290 (substring gud-marker-acc (match-beginning 0))
1291 nil)))
1292 string)
1294 ;;;###autoload
1295 (defun dbx (command-line)
1296 "Run dbx on program FILE in buffer *gud-FILE*.
1297 The directory containing FILE becomes the initial working directory
1298 and source-file directory for your debugger."
1299 (interactive (list (gud-query-cmdline 'dbx)))
1301 (cond
1302 (gud-mips-p
1303 (gud-common-init command-line nil 'gud-mipsdbx-marker-filter))
1304 (gud-irix-p
1305 (gud-common-init command-line 'gud-dbx-massage-args
1306 'gud-irixdbx-marker-filter))
1307 (t
1308 (gud-common-init command-line 'gud-dbx-massage-args
1309 'gud-dbx-marker-filter)))
1311 (set (make-local-variable 'gud-minor-mode) 'dbx)
1313 (cond
1314 (gud-mips-p
1315 (gud-def gud-up "up %p" "<" "Up (numeric arg) stack frames.")
1316 (gud-def gud-down "down %p" ">" "Down (numeric arg) stack frames.")
1318 "\C-b" "Set breakpoint at current line.")
1319 (gud-def gud-finish "return" "\C-f" "Finish executing current function."))
1320 (gud-irix-p
1322 "\C-b" "Set breakpoint at current line.")
1323 (gud-def gud-finish "return" "\C-f" "Finish executing current function.")
1325 "<" "Up (numeric arg) stack frames.")
1327 ">" "Down (numeric arg) stack frames.")
1328 ;; Make dbx give out the source location info that we need.
1329 (process-send-string (get-buffer-process gud-comint-buffer)
1331 (t
1332 (gud-def gud-up "up %p" "<" "Up (numeric arg) stack frames.")
1333 (gud-def gud-down "down %p" ">" "Down (numeric arg) stack frames.")
1335 "\C-b" "Set breakpoint at current line.")
1336 (if gud-dbx-use-stopformat-p
1337 (process-send-string (get-buffer-process gud-comint-buffer)
1340 (gud-def gud-remove "clear %l" "\C-d" "Remove breakpoint at current line")
1341 (gud-def gud-step "step %p" "\C-s" "Step one line with display.")
1342 (gud-def gud-stepi "stepi %p" "\C-i" "Step one instruction with display.")
1343 (gud-def gud-next "next %p" "\C-n" "Step one line (skip functions).")
1344 (gud-def gud-nexti "nexti %p" nil "Step one instruction (skip functions).")
1345 (gud-def gud-cont "cont" "\C-r" "Continue with display.")
1346 (gud-def gud-print "print %e" "\C-p" "Evaluate C expression at point.")
1347 (gud-def gud-run "run" nil "Run the program.")
1350 (setq paragraph-start comint-prompt-regexp)
1351 (run-hooks 'dbx-mode-hook)
1352 )
1353 \f
1354 ;; ======================================================================
1355 ;; xdb (HP PARISC debugger) functions
1357 ;; History of argument lists passed to xdb.
1358 (defvar gud-xdb-history nil)
1360 (defcustom gud-xdb-directories nil
1361 "*A list of directories that xdb should search for source code.
1362 If nil, only source files in the program directory
1363 will be known to xdb.
1365 The file names should be absolute, or relative to the directory
1366 containing the executable being debugged."
1367 :type '(choice (const :tag "Current Directory" nil)
1368 (repeat :value ("")
1369 directory))
1370 :group 'gud)
1372 (defun gud-xdb-massage-args (_file args)
1373 (nconc (let ((directories gud-xdb-directories)
1374 (result nil))
1375 (while directories
1376 (setq result (cons (car directories) (cons "-d" result)))
1377 (setq directories (cdr directories)))
1378 (nreverse result))
1379 args))
1381 ;; xdb does not print the lines all at once, so we have to accumulate them
1382 (defun gud-xdb-marker-filter (string)
1383 (let (result)
1384 (if (or (string-match comint-prompt-regexp string)
1386 (setq result (concat gud-marker-acc string)
1387 gud-marker-acc "")
1388 (setq gud-marker-acc (concat gud-marker-acc string)))
1389 (if result
1391 result)
1393 result))
1394 (let ((line (string-to-number (match-string 2 result)))
1395 (file (gud-file-name (match-string 1 result))))
1396 (if file
1397 (setq gud-last-frame (cons file line))))))
1398 (or result "")))
1400 ;;;###autoload
1401 (defun xdb (command-line)
1402 "Run xdb on program FILE in buffer *gud-FILE*.
1403 The directory containing FILE becomes the initial working directory
1404 and source-file directory for your debugger.
1406 You can set the variable `gud-xdb-directories' to a list of program source
1407 directories if your program contains sources from more than one directory."
1408 (interactive (list (gud-query-cmdline 'xdb)))
1410 (gud-common-init command-line 'gud-xdb-massage-args
1411 'gud-xdb-marker-filter)
1412 (set (make-local-variable 'gud-minor-mode) 'xdb)
1414 (gud-def gud-break "b %f:%l" "\C-b" "Set breakpoint at current line.")
1416 "Set temporary breakpoint at current line.")
1417 (gud-def gud-remove "db" "\C-d" "Remove breakpoint at current line")
1418 (gud-def gud-step "s %p" "\C-s" "Step one line with display.")
1419 (gud-def gud-next "S %p" "\C-n" "Step one line (skip functions).")
1420 (gud-def gud-cont "c" "\C-r" "Continue with display.")
1421 (gud-def gud-up "up %p" "<" "Up (numeric arg) stack frames.")
1422 (gud-def gud-down "down %p" ">" "Down (numeric arg) stack frames.")
1424 (gud-def gud-print "p %e" "\C-p" "Evaluate C expression at point.")
1426 (setq comint-prompt-regexp "^>")
1427 (setq paragraph-start comint-prompt-regexp)
1428 (run-hooks 'xdb-mode-hook))
1429 \f
1430 ;; ======================================================================
1431 ;; perldb functions
1433 ;; History of argument lists passed to perldb.
1434 (defvar gud-perldb-history nil)
1436 (defun gud-perldb-massage-args (_file args)
1437 "Convert a command line as would be typed normally to run perldb
1438 into one that invokes an Emacs-enabled debugging session.
1440 ;; FIXME: what if the command is `make perldb' and doesn't accept those extra
1441 ;; arguments ?
1442 (let* ((new-args nil)
1443 (seen-e nil)
1444 (shift (lambda () (push (pop args) new-args))))
1446 ;; Pass all switches and -e scripts through.
1447 (while (and args
1448 (string-match "^-" (car args))
1449 (not (equal "-" (car args)))
1450 (not (equal "--" (car args))))
1451 (when (equal "-e" (car args))
1452 ;; -e goes with the next arg, so shift one extra.
1453 (or (funcall shift)
1454 ;; -e as the last arg is an error in Perl.
1455 (error "No code specified for -e"))
1456 (setq seen-e t))
1457 (funcall shift))
1459 (unless seen-e
1460 (if (or (not args)
1461 (string-match "^-" (car args)))
1462 (error "Can't use stdin as the script to debug"))
1463 ;; This is the program name.
1464 (funcall shift))
1466 ;; If -e specified, make sure there is a -- so -emacs is not taken
1467 ;; as -e macs.
1468 (if (and args (equal "--" (car args)))
1469 (funcall shift)
1470 (and seen-e (push "--" new-args)))
1472 (push "-emacs" new-args)
1473 (while args
1474 (funcall shift))
1476 (nreverse new-args)))
1478 ;; There's no guarantee that Emacs will hand the filter the entire
1479 ;; marker at once; it could be broken up across several strings. We
1480 ;; might even receive a big chunk with several markers in it. If we
1481 ;; receive a chunk of text which looks like it might contain the
1482 ;; beginning of a marker, we save it here between calls to the
1483 ;; filter.
1484 (defun gud-perldb-marker-filter (string)
1485 (setq gud-marker-acc (concat gud-marker-acc string))
1486 (let ((output ""))
1488 ;; Process all the complete markers in this chunk.
1490 gud-marker-acc)
1491 (setq
1493 ;; Extract the frame position from the marker.
1494 gud-last-frame
1495 (cons (match-string 1 gud-marker-acc)
1496 (string-to-number (match-string 3 gud-marker-acc)))
1498 ;; Append any text before the marker to the output we're going
1499 ;; to return - we don't include the marker in this text.
1500 output (concat output
1501 (substring gud-marker-acc 0 (match-beginning 0)))
1503 ;; Set the accumulator to the remaining text.
1504 gud-marker-acc (substring gud-marker-acc (match-end 0))))
1506 ;; Does the remaining text look like it might end with the
1507 ;; beginning of another marker? If it does, then keep it in
1508 ;; gud-marker-acc until we receive the rest of it. Since we
1509 ;; know the full marker regexp above failed, it's pretty simple to
1510 ;; test for marker starts.
1512 (progn
1513 ;; Everything before the potential marker start can be output.
1514 (setq output (concat output (substring gud-marker-acc
1515 0 (match-beginning 0))))
1517 ;; Everything after, we save, to combine with later input.
1518 (setq gud-marker-acc
1519 (substring gud-marker-acc (match-beginning 0))))
1521 (setq output (concat output gud-marker-acc)
1522 gud-marker-acc ""))
1524 output))
1526 (defcustom gud-perldb-command-name "perl -d"
1527 "Default command to execute a Perl script under debugger."
1528 :type 'string
1529 :group 'gud)
1531 ;;;###autoload
1532 (defun perldb (command-line)
1533 "Run perldb on program FILE in buffer *gud-FILE*.
1534 The directory containing FILE becomes the initial working directory
1535 and source-file directory for your debugger."
1536 (interactive
1537 (list (gud-query-cmdline 'perldb
1538 (concat (or (buffer-file-name) "-e 0") " "))))
1540 (gud-common-init command-line 'gud-perldb-massage-args
1541 'gud-perldb-marker-filter)
1542 (set (make-local-variable 'gud-minor-mode) 'perldb)
1544 (gud-def gud-break "b %l" "\C-b" "Set breakpoint at current line.")
1545 (gud-def gud-remove "B %l" "\C-d" "Remove breakpoint at current line")
1546 (gud-def gud-step "s" "\C-s" "Step one source line with display.")
1547 (gud-def gud-next "n" "\C-n" "Step one line (skip functions).")
1548 (gud-def gud-cont "c" "\C-r" "Continue with display.")
1549 ; (gud-def gud-finish "finish" "\C-f" "Finish executing current function.")
1550 ; (gud-def gud-up "up %p" "<" "Up N stack frames (numeric arg).")
1551 ; (gud-def gud-down "down %p" ">" "Down N stack frames (numeric arg).")
1552 (gud-def gud-print "p %e" "\C-p" "Evaluate perl expression at point.")
1553 (gud-def gud-until "c %l" "\C-u" "Continue to current line.")
1556 (setq comint-prompt-regexp "^ DB<+[0-9]+>+ ")
1557 (setq paragraph-start comint-prompt-regexp)
1558 (run-hooks 'perldb-mode-hook))
1559 \f
1560 ;; ======================================================================
1561 ;; pdb (Python debugger) functions
1563 ;; History of argument lists passed to pdb.
1564 (defvar gud-pdb-history nil)
1566 ;; Last group is for return value, e.g. "> test.py(2)foo()->None"
1567 ;; Either file or function name may be omitted: "> <string>(0)?()"
1568 (defvar gud-pdb-marker-regexp
1569 "^> \\([-a-zA-Z0-9_/.:\\]*\\|<string>\\)(\\([0-9]+\\))\\([a-zA-Z0-9_]*\\|\\?\\|<module>\\)()\\(->[^\n\r]*\\)?[\n\r]")
1571 (defvar gud-pdb-marker-regexp-file-group 1)
1572 (defvar gud-pdb-marker-regexp-line-group 2)
1573 (defvar gud-pdb-marker-regexp-fnname-group 3)
1575 (defvar gud-pdb-marker-regexp-start "^> ")
1577 ;; There's no guarantee that Emacs will hand the filter the entire
1578 ;; marker at once; it could be broken up across several strings. We
1579 ;; might even receive a big chunk with several markers in it. If we
1580 ;; receive a chunk of text which looks like it might contain the
1581 ;; beginning of a marker, we save it here between calls to the
1582 ;; filter.
1583 (defun gud-pdb-marker-filter (string)
1584 (setq gud-marker-acc (concat gud-marker-acc string))
1585 (let ((output ""))
1587 ;; Process all the complete markers in this chunk.
1588 (while (string-match gud-pdb-marker-regexp gud-marker-acc)
1589 (setq
1591 ;; Extract the frame position from the marker.
1592 gud-last-frame
1593 (let ((file (match-string gud-pdb-marker-regexp-file-group
1594 gud-marker-acc))
1595 (line (string-to-number
1596 (match-string gud-pdb-marker-regexp-line-group
1597 gud-marker-acc))))
1598 (if (string-equal file "<string>")
1599 gud-last-frame
1600 (cons file line)))
1602 ;; Output everything instead of the below
1603 output (concat output (substring gud-marker-acc 0 (match-end 0)))
1604 ;; ;; Append any text before the marker to the output we're going
1605 ;; ;; to return - we don't include the marker in this text.
1606 ;; output (concat output
1607 ;; (substring gud-marker-acc 0 (match-beginning 0)))
1609 ;; Set the accumulator to the remaining text.
1610 gud-marker-acc (substring gud-marker-acc (match-end 0))))
1612 ;; Does the remaining text look like it might end with the
1613 ;; beginning of another marker? If it does, then keep it in
1614 ;; gud-marker-acc until we receive the rest of it. Since we
1615 ;; know the full marker regexp above failed, it's pretty simple to
1616 ;; test for marker starts.
1617 (if (string-match gud-pdb-marker-regexp-start gud-marker-acc)
1618 (progn
1619 ;; Everything before the potential marker start can be output.
1620 (setq output (concat output (substring gud-marker-acc
1621 0 (match-beginning 0))))
1623 ;; Everything after, we save, to combine with later input.
1624 (setq gud-marker-acc
1625 (substring gud-marker-acc (match-beginning 0))))
1627 (setq output (concat output gud-marker-acc)
1628 gud-marker-acc ""))
1630 output))
1632 (defcustom gud-pdb-command-name "pdb"
1633 "File name for executing the Python debugger.
1634 This should be an executable on your path, or an absolute file name."
1635 :type 'string
1636 :group 'gud)
1638 ;;;###autoload
1639 (defun pdb (command-line)
1640 "Run pdb on program FILE in buffer `*gud-FILE*'.
1641 The directory containing FILE becomes the initial working directory
1642 and source-file directory for your debugger."
1643 (interactive
1644 (list (gud-query-cmdline 'pdb)))
1646 (gud-common-init command-line nil 'gud-pdb-marker-filter)
1647 (set (make-local-variable 'gud-minor-mode) 'pdb)
1649 (gud-def gud-break "break %d%f:%l" "\C-b" "Set breakpoint at current line.")
1650 (gud-def gud-remove "clear %d%f:%l" "\C-d" "Remove breakpoint at current line")
1651 (gud-def gud-step "step" "\C-s" "Step one source line with display.")
1652 (gud-def gud-next "next" "\C-n" "Step one line (skip functions).")
1653 (gud-def gud-cont "continue" "\C-r" "Continue with display.")
1654 (gud-def gud-finish "return" "\C-f" "Finish executing current function.")
1655 (gud-def gud-up "up" "<" "Up one stack frame.")
1656 (gud-def gud-down "down" ">" "Down one stack frame.")
1657 (gud-def gud-print "p %e" "\C-p" "Evaluate Python expression at point.")
1658 ;; Is this right?
1659 (gud-def gud-statement "! %e" "\C-e" "Execute Python statement at point.")
1661 ;; (setq comint-prompt-regexp "^(.*pdb[+]?) *")
1662 (setq comint-prompt-regexp "^(Pdb) *")
1663 (setq paragraph-start comint-prompt-regexp)
1664 (run-hooks 'pdb-mode-hook))
1665 \f
1666 ;; ======================================================================
1667 ;;
1668 ;; JDB support.
1669 ;;
1670 ;; AUTHOR: Derek Davies <ddavies@world.std.com>
1671 ;; Zoltan Kemenczy <zoltan@ieee.org;zkemenczy@rim.net>
1672 ;;
1673 ;; CREATED: Sun Feb 22 10:46:38 1998 Derek Davies.
1674 ;; UPDATED: Nov 11, 2001 Zoltan Kemenczy
1675 ;; Dec 10, 2002 Zoltan Kemenczy - added nested class support
1676 ;;
1677 ;; INVOCATION NOTES:
1678 ;;
1679 ;; You invoke jdb-mode with:
1680 ;;
1681 ;; M-x jdb <enter>
1682 ;;
1683 ;; It responds with:
1684 ;;
1685 ;; Run jdb (like this): jdb
1686 ;;
1687 ;; type any jdb switches followed by the name of the class you'd like to debug.
1688 ;; Supply a fully qualified classname (these don't have the ".class" extension)
1689 ;; for the name of the class to debug (e.g. "COM.the-kind.ddavies.CoolClass").
1690 ;; See the known problems section below for restrictions when specifying jdb
1691 ;; command line switches (search forward for '-classpath').
1692 ;;
1693 ;; You should see something like the following:
1694 ;;
1695 ;; Current directory is ~/src/java/hello/
1696 ;; Initializing jdb...
1697 ;; 0xed2f6628:class(hello)
1698 ;; >
1699 ;;
1700 ;; To set an initial breakpoint try:
1701 ;;
1702 ;; > stop in hello.main
1703 ;; Breakpoint set in hello.main
1704 ;; >
1705 ;;
1706 ;; To execute the program type:
1707 ;;
1708 ;; > run
1709 ;; run hello
1710 ;;
1711 ;; Breakpoint hit: running ...
1712 ;; hello.main (hello:12)
1713 ;;
1714 ;; Type M-n to step over the current line and M-s to step into it. That,
1715 ;; along with the JDB 'help' command should get you started. The 'quit'
1716 ;; JDB command will get out out of the debugger. There is some truly
1717 ;; pathetic JDB documentation available at:
1718 ;;
1719 ;; http://java.sun.com/products/jdk/1.1/debugging/
1720 ;;
1721 ;; KNOWN PROBLEMS AND FIXME's:
1722 ;;
1723 ;; Not sure what happens with inner classes ... haven't tried them.
1724 ;;
1725 ;; Does not grok UNICODE id's. Only ASCII id's are supported.
1726 ;;
1727 ;; You must not put whitespace between "-classpath" and the path to
1728 ;; search for java classes even though it is required when invoking jdb
1729 ;; from the command line. See gud-jdb-massage-args for details.
1730 ;; The same applies for "-sourcepath".
1731 ;;
1732 ;; Note: The following applies only if `gud-jdb-use-classpath' is nil;
1733 ;; refer to the documentation of `gud-jdb-use-classpath' and
1734 ;; `gud-jdb-classpath',`gud-jdb-sourcepath' variables for information
1735 ;; on using the classpath for locating java source files.
1736 ;;
1737 ;; If any of the source files in the directories listed in
1738 ;; gud-jdb-directories won't parse you'll have problems. Make sure
1739 ;; every file ending in ".java" in these directories parses without error.
1740 ;;
1741 ;; All the .java files in the directories in gud-jdb-directories are
1742 ;; syntactically analyzed each time gud jdb is invoked. It would be
1743 ;; nice to keep as much information as possible between runs. It would
1744 ;; be really nice to analyze the files only as necessary (when the
1745 ;; source needs to be displayed.) I'm not sure to what extent the former
1746 ;; can be accomplished and I'm not sure the latter can be done at all
1747 ;; since I don't know of any general way to tell which .class files are
1748 ;; defined by which .java file without analyzing all the .java files.
1749 ;; If anyone knows why JavaSoft didn't put the source file names in
1750 ;; debuggable .class files please clue me in so I find something else
1751 ;; to be spiteful and bitter about.
1752 ;;
1753 ;; ======================================================================
1754 ;; gud jdb variables and functions
1756 (defcustom gud-jdb-command-name "jdb"
1757 "Command that executes the Java debugger."
1758 :type 'string
1759 :group 'gud)
1761 (defcustom gud-jdb-use-classpath t
1762 "If non-nil, search for Java source files in classpath directories.
1763 The list of directories to search is the value of `gud-jdb-classpath'.
1764 The file pathname is obtained by converting the fully qualified
1765 class information output by jdb to a relative pathname and appending
1766 it to `gud-jdb-classpath' element by element until a match is found.
1768 This method has a significant jdb startup time reduction advantage
1769 since it does not require the scanning of all `gud-jdb-directories'
1770 and parsing all Java files for class information.
1772 Set to nil to use `gud-jdb-directories' to scan java sources for
1773 class information on jdb startup (original method)."
1774 :type 'boolean
1775 :group 'gud)
1777 (defvar gud-jdb-classpath nil
1778 "Java/jdb classpath directories list.
1779 If `gud-jdb-use-classpath' is non-nil, gud-jdb derives the `gud-jdb-classpath'
1780 list automatically using the following methods in sequence
1781 \(with subsequent successful steps overriding the results of previous
1782 steps):
1784 1) Read the CLASSPATH environment variable,
1786 or detected in jdb output (e.g. if jdb is run by a script
1787 that echoes the actual jdb command before starting jdb),
1790 an already running VM) argument (This case typically does not
1792 to the VM when it is started).
1794 Note that method 3 cannot be used with oldjdb (or Java 1 jdb) since
1795 those debuggers do not support the classpath command. Use 1) or 2).")
1797 (defvar gud-jdb-sourcepath nil
1799 This list is prepended to `gud-jdb-classpath' to form the complete
1800 list of directories searched for source files.")
1802 (defvar gud-marker-acc-max-length 4000
1803 "Maximum number of debugger output characters to keep.
1804 This variable limits the size of `gud-marker-acc' which holds
1805 the most recent debugger output history while searching for
1806 source file information.")
1808 (defvar gud-jdb-history nil
1809 "History of argument lists passed to jdb.")
1812 ;; List of Java source file directories.
1813 (defvar gud-jdb-directories (list ".")
1814 "*A list of directories that gud jdb should search for source code.
1815 The file names should be absolute, or relative to the current
1816 directory.
1818 The set of .java files residing in the directories listed are
1819 syntactically analyzed to determine the classes they define and the
1820 packages in which these classes belong. In this way gud jdb maps the
1821 package-qualified class names output by the jdb debugger to the source
1822 file from which the class originated. This allows gud mode to keep
1823 the source code display in sync with the debugging session.")
1825 (defvar gud-jdb-source-files nil
1826 "List of the java source files for this debugging session.")
1828 ;; Association list of fully qualified class names (package + class name)
1829 ;; and their source files.
1830 (defvar gud-jdb-class-source-alist nil
1831 "Association list of fully qualified class names and source files.")
1833 ;; This is used to hold a source file during analysis.
1834 (defvar gud-jdb-analysis-buffer nil)
1836 (defvar gud-jdb-classpath-string nil
1837 "Holds temporary classpath values.")
1839 (defun gud-jdb-build-source-files-list (path extn)
1840 "Return a list of java source files (absolute paths).
1841 PATH gives the directories in which to search for files with
1842 extension EXTN. Normally EXTN is given as the regular expression
1844 (apply 'nconc (mapcar (lambda (d)
1845 (when (file-directory-p d)
1846 (directory-files d t extn nil)))
1847 path)))
1849 ;; Move point past whitespace.
1850 (defun gud-jdb-skip-whitespace ()
1853 ;; Move point past a "// <eol>" type of comment.
1854 (defun gud-jdb-skip-single-line-comment ()
1855 (end-of-line))
1857 ;; Move point past a "/* */" or "/** */" type of comment.
1858 (defun gud-jdb-skip-traditional-or-documentation-comment ()
1859 (forward-char 2)
1860 (catch 'break
1861 (while (not (eobp))
1862 (if (eq (following-char) ?*)
1863 (progn
1864 (forward-char)
1865 (if (not (eobp))
1866 (if (eq (following-char) ?/)
1867 (progn
1868 (forward-char)
1869 (throw 'break nil)))))
1870 (forward-char)))))
1872 ;; Move point past any number of consecutive whitespace chars and/or comments.
1873 (defun gud-jdb-skip-whitespace-and-comments ()
1874 (gud-jdb-skip-whitespace)
1875 (catch 'done
1876 (while t
1877 (cond
1878 ((looking-at "//")
1879 (gud-jdb-skip-single-line-comment)
1880 (gud-jdb-skip-whitespace))
1882 (gud-jdb-skip-traditional-or-documentation-comment)
1883 (gud-jdb-skip-whitespace))
1884 (t (throw 'done nil))))))
1886 ;; Move point past things that are id-like. The intent is to skip regular
1887 ;; id's, such as class or interface names as well as package and interface
1888 ;; names.
1889 (defun gud-jdb-skip-id-ish-thing ()
1892 ;; Move point past a string literal.
1893 (defun gud-jdb-skip-string-literal ()
1894 (forward-char)
1895 (while (not (cond
1897 (forward-char))
1899 (forward-char))
1900 (forward-char))
1902 ;; Move point past a character literal.
1903 (defun gud-jdb-skip-character-literal ()
1904 (forward-char)
1905 (while
1906 (progn
1908 (forward-char 2))
1910 (forward-char))
1911 (forward-char))
1913 ;; Move point past the following block. There may be (legal) cruft before
1914 ;; the block's opening brace. There must be a block or it's the end of life
1915 ;; in petticoat junction.
1916 (defun gud-jdb-skip-block ()
1918 ;; Find the beginning of the block.
1919 (while
1920 (not (eq (following-char) ?{))
1922 ;; Skip any constructs that can harbor literal block delimiter
1923 ;; characters and/or the delimiters for the constructs themselves.
1924 (cond
1925 ((looking-at "//")
1926 (gud-jdb-skip-single-line-comment))
1928 (gud-jdb-skip-traditional-or-documentation-comment))
1930 (gud-jdb-skip-string-literal))
1932 (gud-jdb-skip-character-literal))
1933 (t (forward-char))))
1935 ;; Now at the beginning of the block.
1936 (forward-char)
1938 ;; Skip over the body of the block as well as the final brace.
1939 (let ((open-level 1))
1940 (while (not (eq open-level 0))
1941 (cond
1942 ((looking-at "//")
1943 (gud-jdb-skip-single-line-comment))
1945 (gud-jdb-skip-traditional-or-documentation-comment))
1947 (gud-jdb-skip-string-literal))
1949 (gud-jdb-skip-character-literal))
1950 ((eq (following-char) ?{)
1951 (setq open-level (+ open-level 1))
1952 (forward-char))
1953 ((eq (following-char) ?})
1954 (setq open-level (- open-level 1))
1955 (forward-char))
1956 (t (forward-char))))))
1958 ;; Find the package and class definitions in Java source file FILE. Assumes
1959 ;; that FILE contains a legal Java program. BUF is a scratch buffer used
1960 ;; to hold the source during analysis.
1961 (defun gud-jdb-analyze-source (buf file)
1962 (let ((l nil))
1963 (set-buffer buf)
1964 (insert-file-contents file nil nil nil t)
1965 (goto-char 0)
1966 (catch 'abort
1967 (let ((p ""))
1968 (while (progn
1969 (gud-jdb-skip-whitespace)
1970 (not (eobp)))
1971 (cond
1973 ;; Any number of semi's following a block is legal. Move point
1974 ;; past them. Note that comments and whitespace may be
1975 ;; interspersed as well.
1977 (forward-char))
1979 ;; Move point past a single line comment.
1980 ((looking-at "//")
1981 (gud-jdb-skip-single-line-comment))
1983 ;; Move point past a traditional or documentation comment.
1985 (gud-jdb-skip-traditional-or-documentation-comment))
1987 ;; Move point past a package statement, but save the PackageName.
1988 ((looking-at "package")
1989 (forward-char 7)
1990 (gud-jdb-skip-whitespace-and-comments)
1991 (let ((s (point)))
1992 (gud-jdb-skip-id-ish-thing)
1993 (setq p (concat (buffer-substring s (point)) "."))
1994 (gud-jdb-skip-whitespace-and-comments)
1996 (forward-char))))
1998 ;; Move point past an import statement.
1999 ((looking-at "import")
2000 (forward-char 6)
2001 (gud-jdb-skip-whitespace-and-comments)
2002 (gud-jdb-skip-id-ish-thing)
2003 (gud-jdb-skip-whitespace-and-comments)
2005 (forward-char)))
2007 ;; Move point past the various kinds of ClassModifiers.
2008 ((looking-at "public")
2009 (forward-char 6))
2010 ((looking-at "abstract")
2011 (forward-char 8))
2012 ((looking-at "final")
2013 (forward-char 5))
2015 ;; Move point past a ClassDeclaration, but save the class
2016 ;; Identifier.
2017 ((looking-at "class")
2018 (forward-char 5)
2019 (gud-jdb-skip-whitespace-and-comments)
2020 (let ((s (point)))
2021 (gud-jdb-skip-id-ish-thing)
2022 (setq
2023 l (nconc l (list (concat p (buffer-substring s (point)))))))
2024 (gud-jdb-skip-block))
2026 ;; Move point past an interface statement.
2027 ((looking-at "interface")
2028 (forward-char 9)
2029 (gud-jdb-skip-block))
2031 ;; Anything else means the input is invalid.
2032 (t
2033 (message "Error parsing file %s." file)
2034 (throw 'abort nil))))))
2035 l))
2037 (defun gud-jdb-build-class-source-alist-for-file (file)
2038 (mapcar
2039 (lambda (c)
2040 (cons c file))
2041 (gud-jdb-analyze-source gud-jdb-analysis-buffer file)))
2043 ;; Return an alist of fully qualified classes and the source files
2044 ;; holding their definitions. SOURCES holds a list of all the source
2045 ;; files to examine.
2046 (defun gud-jdb-build-class-source-alist (sources)
2047 (setq gud-jdb-analysis-buffer (get-buffer-create " *gud-jdb-scratch*"))
2048 (prog1
2049 (apply
2050 'nconc
2051 (mapcar
2052 'gud-jdb-build-class-source-alist-for-file
2053 sources))
2054 (kill-buffer gud-jdb-analysis-buffer)
2055 (setq gud-jdb-analysis-buffer nil)))
2057 ;; Change what was given in the minibuffer to something that can be used to
2058 ;; invoke the debugger.
2059 (defun gud-jdb-massage-args (_file args)
2060 ;; The jdb executable must have whitespace between "-classpath" and
2061 ;; its value while gud-common-init expects all switch values to
2062 ;; follow the switch keyword without intervening whitespace. We
2063 ;; require that when the user enters the "-classpath" switch in the
2064 ;; EMACS minibuffer that they do so without the intervening
2065 ;; whitespace. This function adds it back (it's called after
2066 ;; gud-common-init). There are more switches like this (for
2067 ;; instance "-host" and "-password") but I don't care about them
2068 ;; yet.
2069 (if args
2070 (let (massaged-args user-error)
2072 (while (and args (not user-error))
2073 (cond
2074 ((setq user-error (string-match "-classpath$" (car args))))
2075 ((setq user-error (string-match "-sourcepath$" (car args))))
2077 (setq massaged-args
2078 (append massaged-args
2079 (list "-classpath"
2080 (setq gud-jdb-classpath-string
2081 (match-string 1 (car args)))))))
2083 (setq massaged-args
2084 (append massaged-args
2085 (list "-sourcepath"
2086 (setq gud-jdb-sourcepath
2087 (match-string 1 (car args)))))))
2088 (t (setq massaged-args (append massaged-args (list (car args))))))
2089 (setq args (cdr args)))
2091 ;; By this point the current directory is all screwed up. Maybe we
2092 ;; could fix things and re-invoke gud-common-init, but for now I think
2093 ;; issuing the error is good enough.
2094 (if user-error
2095 (progn
2096 (kill-buffer (current-buffer))
2097 (error "Error: Omit whitespace between '-classpath or -sourcepath' and its value")))
2098 massaged-args)))
2100 ;; Search for an association with P, a fully qualified class name, in
2101 ;; gud-jdb-class-source-alist. The association gives the fully
2102 ;; qualified file name of the source file which produced the class.
2103 (defun gud-jdb-find-source-file (p)
2104 (cdr (assoc p gud-jdb-class-source-alist)))
2106 ;; Note: Reset to this value every time a prompt is seen
2107 (defvar gud-jdb-lowest-stack-level 999)
2109 (defun gud-jdb-find-source-using-classpath (p)
2110 "Find source file corresponding to fully qualified class P.
2111 Convert P from jdb's output, converted to a pathname
2112 relative to a classpath directory."
2113 (save-match-data
2114 (let
2115 (;; Replace dots with slashes and append ".java" to generate file
2116 ;; name relative to classpath
2117 (filename
2118 (concat
2119 (mapconcat 'identity
2120 (split-string
2121 ;; Eliminate any subclass references in the class
2122 ;; name string. These start with a "$"
2123 ((lambda (x)
2124 (if (string-match "$.*" x)
2125 (replace-match "" t t x) p))
2126 p)
2128 ".java"))
2129 (cplist (append gud-jdb-sourcepath gud-jdb-classpath))
2130 found-file)
2131 (while (and cplist
2132 (not (setq found-file
2133 (file-readable-p
2134 (concat (car cplist) "/" filename)))))
2135 (setq cplist (cdr cplist)))
2136 (if found-file (concat (car cplist) "/" filename)))))
2138 (defun gud-jdb-find-source (_string)
2139 "Alias for function used to locate source files.
2140 Set to `gud-jdb-find-source-using-classpath' or `gud-jdb-find-source-file'
2141 during jdb initialization depending on the value of
2142 `gud-jdb-use-classpath'."
2143 nil)
2145 (defun gud-jdb-parse-classpath-string (string)
2146 "Parse the classpath list and convert each item to an absolute pathname."
2148 (replace-match "" nil nil s) s))
2149 (mapcar 'file-truename
2150 (split-string
2151 string
2154 ;; See commentary for other debugger's marker filters - there you will find
2155 ;; important notes about STRING.
2156 (defun gud-jdb-marker-filter (string)
2158 ;; Build up the accumulator.
2159 (setq gud-marker-acc
2160 (if gud-marker-acc
2161 (concat gud-marker-acc string)
2162 string))
2164 ;; Look for classpath information until gud-jdb-classpath-string is found
2165 ;; (interactive, multiple settings of classpath from jdb
2166 ;; not supported/followed)
2167 (if (and gud-jdb-use-classpath
2168 (not gud-jdb-classpath-string)
2171 (setq gud-jdb-classpath
2172 (gud-jdb-parse-classpath-string
2173 (setq gud-jdb-classpath-string
2174 (match-string 1 gud-marker-acc)))))
2176 ;; We process STRING from left to right. Each time through the
2177 ;; following loop we process at most one marker. After we've found a
2178 ;; marker, delete gud-marker-acc up to and including the match
2179 (let (file-found)
2180 ;; Process each complete marker in the input.
2181 (while
2183 ;; Do we see a marker?
2184 (string-match
2185 ;; jdb puts out a string of the following form when it
2186 ;; hits a breakpoint:
2187 ;;
2188 ;; <fully-qualified-class><method> (<class>:<line-number>)
2189 ;;
2190 ;; <fully-qualified-class>'s are composed of Java ID's
2191 ;; separated by periods. <method> and <class> are
2192 ;; also Java ID's. <method> begins with a period and
2193 ;; may contain less-than and greater-than (constructors,
2194 ;; for instance, are called <init> in the symbol table.)
2195 ;; Java ID's begin with a letter followed by letters
2196 ;; and/or digits. The set of letters includes underscore
2197 ;; and dollar sign.
2198 ;;
2199 ;; The first group matches <fully-qualified-class>,
2200 ;; the second group matches <class> and the third group
2201 ;; matches <line-number>. We don't care about using
2202 ;; <method> so we don't "group" it.
2203 ;;
2204 ;; FIXME: Java ID's are UNICODE strings, this matches ASCII
2205 ;; ID's only.
2206 ;;
2207 ;; The ".," in the last square-bracket are necessary because
2208 ;; of Sun's total disrespect for backwards compatibility in
2209 ;; reported line numbers from jdb - starting in 1.4.0 they
2210 ;; print line numbers using LOCALE, inserting a comma or a
2211 ;; period at the thousands positions (how ingenious!).
2215 gud-marker-acc)
2217 ;; A good marker is one that:
2218 ;; 1) does not have a "[n] " prefix (not part of a stack backtrace)
2219 ;; 2) does have an "[n] " prefix and n is the lowest prefix seen
2220 ;; since the last prompt
2221 ;; Figure out the line on which to position the debugging arrow.
2222 ;; Return the info as a cons of the form:
2223 ;;
2224 ;; (<file-name> . <line-number>) .
2225 (if (if (match-beginning 1)
2226 (let (n)
2227 (setq n (string-to-number (substring
2228 gud-marker-acc
2229 (1+ (match-beginning 1))
2230 (- (match-end 1) 2))))
2231 (if (< n gud-jdb-lowest-stack-level)
2232 (progn (setq gud-jdb-lowest-stack-level n) t)))
2233 t)
2234 (if (setq file-found
2235 (gud-jdb-find-source (match-string 2 gud-marker-acc)))
2236 (setq gud-last-frame
2237 (cons file-found
2238 (string-to-number
2239 (let
2240 ((numstr (match-string 4 gud-marker-acc)))
2241 (if (string-match "[.,]" numstr)
2242 (replace-match "" nil nil numstr)
2243 numstr)))))
2244 (message "Could not find source file.")))
2246 ;; Set the accumulator to the remaining text.
2247 (setq gud-marker-acc (substring gud-marker-acc (match-end 0))))
2249 (if (string-match comint-prompt-regexp gud-marker-acc)
2250 (setq gud-jdb-lowest-stack-level 999)))
2252 ;; Do not allow gud-marker-acc to grow without bound. If the source
2253 ;; file information is not within the last 3/4
2254 ;; gud-marker-acc-max-length characters, well,...
2255 (if (> (length gud-marker-acc) gud-marker-acc-max-length)
2256 (setq gud-marker-acc
2257 (substring gud-marker-acc
2258 (- (/ (* gud-marker-acc-max-length 3) 4)))))
2260 ;; We don't filter any debugger output so just return what we were given.
2261 string)
2263 (defvar gud-jdb-command-name "jdb" "Command that executes the Java debugger.")
2265 ;;;###autoload
2266 (defun jdb (command-line)
2267 "Run jdb with command line COMMAND-LINE in a buffer.
2270 switch is given, omit all whitespace between it and its value.
2272 See `gud-jdb-use-classpath' and `gud-jdb-classpath' documentation for
2273 information on how jdb accesses source files. Alternatively (if
2274 `gud-jdb-use-classpath' is nil), see `gud-jdb-directories' for the
2275 original source file access method.
2277 For general information about commands available to control jdb from
2278 gud, see `gud-mode'."
2279 (interactive
2280 (list (gud-query-cmdline 'jdb)))
2281 (setq gud-jdb-classpath nil)
2282 (setq gud-jdb-sourcepath nil)
2284 ;; Set gud-jdb-classpath from the CLASSPATH environment variable,
2285 ;; if CLASSPATH is set.
2286 (setq gud-jdb-classpath-string (or (getenv "CLASSPATH") "."))
2287 (if gud-jdb-classpath-string
2288 (setq gud-jdb-classpath
2289 (gud-jdb-parse-classpath-string gud-jdb-classpath-string)))
2290 (setq gud-jdb-classpath-string nil) ; prepare for next
2292 (gud-common-init command-line 'gud-jdb-massage-args
2293 'gud-jdb-marker-filter)
2294 (set (make-local-variable 'gud-minor-mode) 'jdb)
2296 ;; If a -classpath option was provided, set gud-jdb-classpath
2297 (if gud-jdb-classpath-string
2298 (setq gud-jdb-classpath
2299 (gud-jdb-parse-classpath-string gud-jdb-classpath-string)))
2300 (setq gud-jdb-classpath-string nil) ; prepare for next
2301 ;; If a -sourcepath option was provided, parse it
2302 (if gud-jdb-sourcepath
2303 (setq gud-jdb-sourcepath
2304 (gud-jdb-parse-classpath-string gud-jdb-sourcepath)))
2306 (gud-def gud-break "stop at %c:%l" "\C-b" "Set breakpoint at current line.")
2307 (gud-def gud-remove "clear %c:%l" "\C-d" "Remove breakpoint at current line")
2308 (gud-def gud-step "step" "\C-s" "Step one source line with display.")
2309 (gud-def gud-next "next" "\C-n" "Step one line (skip functions).")
2310 (gud-def gud-cont "cont" "\C-r" "Continue with display.")
2311 (gud-def gud-finish "step up" "\C-f" "Continue until current method returns.")
2312 (gud-def gud-up "up\C-Mwhere" "<" "Up one stack frame.")
2313 (gud-def gud-down "down\C-Mwhere" ">" "Up one stack frame.")
2314 (gud-def gud-run "run" nil "Run the program.") ;if VM start using jdb
2315 (gud-def gud-print "print %e" "\C-p" "Print value of expression at point.")
2316 (gud-def gud-pstar "dump %e" nil "Print all object information at point.")
2319 (setq paragraph-start comint-prompt-regexp)
2320 (run-hooks 'jdb-mode-hook)
2322 (if gud-jdb-use-classpath
2323 ;; Get the classpath information from the debugger
2324 (progn
2325 (if (string-match "-attach" command-line)
2326 (gud-call "classpath"))
2327 (fset 'gud-jdb-find-source
2328 'gud-jdb-find-source-using-classpath))
2330 ;; Else create and bind the class/source association list as well
2331 ;; as the source file list.
2332 (setq gud-jdb-class-source-alist
2333 (gud-jdb-build-class-source-alist
2334 (setq gud-jdb-source-files
2335 (gud-jdb-build-source-files-list gud-jdb-directories
2337 (fset 'gud-jdb-find-source 'gud-jdb-find-source-file)))
2339 ;;
2340 ;; End of debugger-specific information
2341 ;;
2343 \f
2344 ;; When we send a command to the debugger via gud-call, it's annoying
2345 ;; to see the command and the new prompt inserted into the debugger's
2346 ;; buffer; we have other ways of knowing the command has completed.
2347 ;;
2348 ;; If the buffer looks like this:
2349 ;; --------------------
2350 ;; (gdb) set args foo bar
2351 ;; (gdb) -!-
2352 ;; --------------------
2353 ;; (the -!- marks the location of point), and we type `C-x SPC' in a
2354 ;; source file to set a breakpoint, we want the buffer to end up like
2355 ;; this:
2356 ;; --------------------
2357 ;; (gdb) set args foo bar
2358 ;; Breakpoint 1 at 0x92: file make-docfile.c, line 49.
2359 ;; (gdb) -!-
2360 ;; --------------------
2361 ;; Essentially, the old prompt is deleted, and the command's output
2362 ;; and the new prompt take its place.
2363 ;;
2364 ;; Not echoing the command is easy enough; you send it directly using
2365 ;; process-send-string, and it never enters the buffer. However,
2366 ;; getting rid of the old prompt is trickier; you don't want to do it
2367 ;; when you send the command, since that will result in an annoying
2368 ;; flicker as the prompt is deleted, redisplay occurs while Emacs
2369 ;; waits for a response from the debugger, and the new prompt is
2370 ;; inserted. Instead, we'll wait until we actually get some output
2371 ;; from the subprocess before we delete the prompt. If the command
2372 ;; produced no output other than a new prompt, that prompt will most
2373 ;; likely be in the first chunk of output received, so we will delete
2374 ;; the prompt and then replace it with an identical one. If the
2375 ;; command produces output, the prompt is moving anyway, so the
2376 ;; flicker won't be annoying.
2377 ;;
2378 ;; So - when we want to delete the prompt upon receipt of the next
2379 ;; chunk of debugger output, we position gud-delete-prompt-marker at
2380 ;; the start of the prompt; the process filter will notice this, and
2381 ;; delete all text between it and the process output marker. If
2382 ;; gud-delete-prompt-marker points nowhere, we leave the current
2383 ;; prompt alone.
2384 (defvar gud-delete-prompt-marker nil)
2386 \f
2387 (put 'gud-mode 'mode-class 'special)
2389 (define-derived-mode gud-mode comint-mode "Debugger"
2390 "Major mode for interacting with an inferior debugger process.
2392 You start it up with one of the commands M-x gdb, M-x sdb, M-x dbx,
2393 M-x perldb, M-x xdb, or M-x jdb. Each entry point finishes by executing a
2394 hook; `gdb-mode-hook', `sdb-mode-hook', `dbx-mode-hook',
2395 `perldb-mode-hook', `xdb-mode-hook', or `jdb-mode-hook' respectively.
2397 After startup, the following commands are available in both the GUD
2398 interaction buffer and any source buffer GUD visits due to a breakpoint stop
2399 or step operation:
2402 GUD buffer, the current file and line are those of the last breakpoint or
2403 step. In a source buffer, they are the buffer's file and current line.
2408 in the gud buffer.
2411 step-one-line (not entering function calls), and step-one-instruction
2412 and then update the source window with the current file and position.
2416 around point, and sends it to the debugger for value display.
2418 The above commands are common to all supported debuggers except xdb which
2419 does not support stepping instructions.
2422 except that the breakpoint is temporary; that is, it is removed when
2423 execution stops on it.
2429 the current function and stops.
2431 All the keystrokes above are accessible in the GUD buffer
2432 with the prefix C-c, and in all buffers through the prefix C-x C-a.
2434 All pre-defined functions for which the concept make sense repeat
2435 themselves the appropriate number of times if you give a prefix
2436 argument.
2438 You may use the `gud-def' macro in the initialization hook to define other
2439 commands.
2441 Other commands for interacting with the debugger process are inherited from
2442 comint mode, which see."
2443 (setq mode-line-process '(":%s"))
2444 (define-key (current-local-map) "\C-c\C-l" 'gud-refresh)
2445 (set (make-local-variable 'gud-last-frame) nil)
2446 (set (make-local-variable 'tool-bar-map) gud-tool-bar-map)
2447 (make-local-variable 'comint-prompt-regexp)
2448 ;; Don't put repeated commands in command history many times.
2449 (set (make-local-variable 'comint-input-ignoredups) t)
2450 (make-local-variable 'paragraph-start)
2451 (set (make-local-variable 'gud-delete-prompt-marker) (make-marker))
2452 (add-hook 'kill-buffer-hook 'gud-kill-buffer-hook nil t))
2454 (defcustom gud-chdir-before-run t
2455 "Non-nil if GUD should `cd' to the debugged executable."
2456 :group 'gud
2457 :type 'boolean)
2459 (declare-function tramp-file-name-localname "tramp" (vec))
2460 (declare-function tramp-dissect-file-name "tramp" (name &optional nodefault))
2462 ;; Perform initializations common to all debuggers.
2463 ;; The first arg is the specified command line,
2464 ;; which starts with the program to debug.
2465 ;; The other three args specify the values to use
2466 ;; for local variables in the debugger buffer.
2467 (defun gud-common-init (command-line massage-args marker-filter
2468 &optional find-file)
2469 (let* ((words (split-string-and-unquote command-line))
2470 (program (car words))
2471 (dir default-directory)
2472 ;; Extract the file name from WORDS
2473 ;; and put t in its place.
2474 ;; Later on we will put the modified file name arg back there.
2475 (file-word (let ((w (cdr words)))
2476 (while (and w (= ?- (aref (car w) 0)))
2477 (setq w (cdr w)))
2478 (and w
2479 (prog1 (car w)
2480 (setcar w t)))))
2481 (file-subst
2482 (and file-word (substitute-in-file-name file-word)))
2483 (args (cdr words))
2484 ;; If a directory was specified, expand the file name.
2485 ;; Otherwise, don't expand it, so GDB can use the PATH.
2486 ;; A file name without directory is literally valid
2487 ;; only if the file exists in ., and in that case,
2488 ;; omitting the expansion here has no visible effect.
2489 (file (and file-word
2490 (if (file-name-directory file-subst)
2491 (expand-file-name file-subst)
2492 file-subst)))
2493 (filepart (and file-word (concat "-" (file-name-nondirectory file))))
2494 (existing-buffer (get-buffer (concat "*gud" filepart "*"))))
2495 (switch-to-buffer (concat "*gud" filepart "*"))
2496 (when (and existing-buffer (get-buffer-process existing-buffer))
2497 (error "This program is already being debugged"))
2498 ;; Set the dir, in case the buffer already existed with a different dir.
2499 (setq default-directory dir)
2500 ;; Set default-directory to the file's directory.
2501 (and file-word
2502 gud-chdir-before-run
2503 ;; Don't set default-directory if no directory was specified.
2504 ;; In that case, either the file is found in the current directory,
2505 ;; in which case this setq is a no-op,
2506 ;; or it is found by searching PATH,
2507 ;; in which case we don't know what directory it was found in.
2508 (file-name-directory file)
2509 (setq default-directory (file-name-directory file)))
2510 (or (bolp) (newline))
2512 ;; Put the substituted and expanded file name back in its place.
2513 (let ((w args))
2514 (while (and w (not (eq (car w) t)))
2515 (setq w (cdr w)))
2516 (if w
2517 (setcar w
2518 (if (file-remote-p file)
2519 ;; Tramp has already been loaded if we are here.
2520 (setq file (tramp-file-name-localname
2521 (tramp-dissect-file-name file)))
2522 file))))
2523 (apply 'make-comint (concat "gud" filepart) program nil
2524 (if massage-args (funcall massage-args file args) args))
2525 ;; Since comint clobbered the mode, we don't set it until now.
2526 (gud-mode)
2527 (set (make-local-variable 'gud-target-name)
2528 (and file-word (file-name-nondirectory file))))
2529 (set (make-local-variable 'gud-marker-filter) marker-filter)
2530 (if find-file (set (make-local-variable 'gud-find-file) find-file))
2531 (setq gud-last-last-frame nil)
2533 (set-process-filter (get-buffer-process (current-buffer)) 'gud-filter)
2534 (set-process-sentinel (get-buffer-process (current-buffer)) 'gud-sentinel)
2535 (gud-set-buffer))
2537 (defun gud-set-buffer ()
2538 (when (derived-mode-p 'gud-mode)
2539 (setq gud-comint-buffer (current-buffer))))
2541 (defvar gud-filter-defer-flag nil
2542 "Non-nil means don't process anything from the debugger right now.
2543 It is saved for when this flag is not set.")
2545 ;; These functions are responsible for inserting output from your debugger
2546 ;; into the buffer. The hard work is done by the method that is
2547 ;; the value of gud-marker-filter.
2549 (defun gud-filter (proc string)
2550 ;; Here's where the actual buffer insertion is done
2551 (let (output process-window)
2552 (if (buffer-name (process-buffer proc))
2553 (if gud-filter-defer-flag
2554 ;; If we can't process any text now,
2555 ;; save it for later.
2556 (setq gud-filter-pending-text
2557 (concat (or gud-filter-pending-text "") string))
2559 ;; If we have to ask a question during the processing,
2560 ;; defer any additional text that comes from the debugger
2561 ;; during that time.
2562 (let ((gud-filter-defer-flag t))
2563 ;; Process now any text we previously saved up.
2564 (if gud-filter-pending-text
2565 (setq string (concat gud-filter-pending-text string)
2566 gud-filter-pending-text nil))
2568 (with-current-buffer (process-buffer proc)
2569 ;; If we have been so requested, delete the debugger prompt.
2570 (save-restriction
2571 (widen)
2572 (if (marker-buffer gud-delete-prompt-marker)
2573 (let ((inhibit-read-only t))
2574 (delete-region (process-mark proc)
2575 gud-delete-prompt-marker)
2576 (comint-update-fence)
2577 (set-marker gud-delete-prompt-marker nil)))
2578 ;; Save the process output, checking for source file markers.
2579 (setq output (gud-marker-filter string))
2580 ;; Check for a filename-and-line number.
2581 ;; Don't display the specified file
2582 ;; unless (1) point is at or after the position where output appears
2583 ;; and (2) this buffer is on the screen.
2584 (setq process-window
2585 (and gud-last-frame
2586 (>= (point) (process-mark proc))
2587 (get-buffer-window (current-buffer)))))
2589 ;; Let the comint filter do the actual insertion.
2590 ;; That lets us inherit various comint features.
2591 (comint-output-filter proc output))
2593 ;; Put the arrow on the source line.
2594 ;; This must be outside of the save-excursion
2595 ;; in case the source file is our current buffer.
2596 (if process-window
2597 (with-selected-window process-window
2598 (gud-display-frame))
2599 ;; We have to be in the proper buffer, (process-buffer proc),
2600 ;; but not in a save-excursion, because that would restore point.
2601 (with-current-buffer (process-buffer proc)
2602 (gud-display-frame))))
2604 ;; If we deferred text that arrived during this processing,
2605 ;; handle it now.
2606 (if gud-filter-pending-text
2607 (gud-filter proc ""))))))
2609 (defvar gud-minor-mode-type nil)
2610 (defvar gud-overlay-arrow-position nil)
2611 (add-to-list 'overlay-arrow-variable-list 'gud-overlay-arrow-position)
2613 (declare-function gdb-reset "gdb-mi" ())
2615 (defun gud-sentinel (proc msg)
2616 (cond ((null (buffer-name (process-buffer proc)))
2617 ;; buffer killed
2618 ;; Stop displaying an arrow in a source file.
2619 (setq gud-overlay-arrow-position nil)
2620 (set-process-buffer proc nil)
2621 (if (and (boundp 'speedbar-frame)
2622 (string-equal speedbar-initial-expansion-list-name "GUD"))
2623 (speedbar-change-initial-expansion-list
2624 speedbar-previously-used-expansion-list-name))
2625 (if (eq gud-minor-mode-type 'gdbmi)
2626 (gdb-reset)
2627 (gud-reset)))
2628 ((memq (process-status proc) '(signal exit))
2629 ;; Stop displaying an arrow in a source file.
2630 (setq gud-overlay-arrow-position nil)
2631 (if (eq (buffer-local-value 'gud-minor-mode gud-comint-buffer)
2632 'gdbmi)
2633 (gdb-reset)
2634 (gud-reset))
2635 (let* ((obuf (current-buffer)))
2636 ;; save-excursion isn't the right thing if
2637 ;; process-buffer is current-buffer
2638 (unwind-protect
2639 (progn
2640 ;; Write something in the GUD buffer and hack its mode line,
2641 (set-buffer (process-buffer proc))
2642 ;; Fix the mode line.
2643 (setq mode-line-process
2644 (concat ":"
2645 (symbol-name (process-status proc))))
2646 (force-mode-line-update)
2647 (if (eobp)
2649 (save-excursion
2650 (goto-char (point-max))
2652 ;; If buffer and mode line will show that the process
2653 ;; is dead, we can delete it now. Otherwise it
2654 ;; will stay around until M-x list-processes.
2655 (delete-process proc))
2656 ;; Restore old buffer, but don't restore old point
2657 ;; if obuf is the gud buffer.
2658 (set-buffer obuf))))))
2660 (defun gud-kill-buffer-hook ()
2661 (setq gud-minor-mode-type gud-minor-mode)
2662 (condition-case nil
2663 (progn
2664 (kill-process (get-buffer-process (current-buffer)))
2665 (delete-process (get-process "gdb-inferior")))
2666 (error nil)))
2668 (defun gud-reset ()
2669 (dolist (buffer (buffer-list))
2670 (unless (eq buffer gud-comint-buffer)
2671 (with-current-buffer buffer
2672 (when gud-minor-mode
2673 (setq gud-minor-mode nil)
2674 (kill-local-variable 'tool-bar-map))))))
2676 (defun gud-display-frame ()
2677 "Find and obey the last filename-and-line marker from the debugger.
2678 Obeying it means displaying in another window the specified file and line."
2679 (interactive)
2680 (when gud-last-frame
2681 (gud-set-buffer)
2682 (gud-display-line (car gud-last-frame) (cdr gud-last-frame))
2683 (setq gud-last-last-frame gud-last-frame
2684 gud-last-frame nil)))
2686 (declare-function global-hl-line-highlight "hl-line" ())
2687 (declare-function hl-line-highlight "hl-line" ())
2688 (declare-function gdb-display-source-buffer "gdb-mi" (buffer))
2689 (declare-function gdb-display-buffer "gdb-mi" (buf dedicated &optional size))
2691 ;; Make sure the file named TRUE-FILE is in a buffer that appears on the screen
2692 ;; and that its line LINE is visible.
2693 ;; Put the overlay-arrow on the line LINE in that buffer.
2694 ;; Most of the trickiness in here comes from wanting to preserve the current
2695 ;; region-restriction if that's possible. We use an explicit display-buffer
2696 ;; to get around the fact that this is called inside a save-excursion.
2698 (defun gud-display-line (true-file line)
2699 (let* ((last-nonmenu-event t) ; Prevent use of dialog box for questions.
2700 (buffer
2701 (with-current-buffer gud-comint-buffer
2702 (gud-find-file true-file)))
2703 (window (and buffer
2704 (or (get-buffer-window buffer)
2705 (if (eq gud-minor-mode 'gdbmi)
2706 (or (if (get-buffer-window buffer 'visible)
2707 (display-buffer buffer nil 'visible))
2708 (unless (gdb-display-source-buffer buffer)
2709 (gdb-display-buffer buffer nil 'visible))))
2710 (display-buffer buffer))))
2711 (pos))
2712 (if buffer
2713 (progn
2714 (with-current-buffer buffer
2715 (unless (or (verify-visited-file-modtime buffer) gud-keep-buffer)
2716 (if (yes-or-no-p
2717 (format "File %s changed on disk. Reread from disk? "
2718 (buffer-name)))
2719 (revert-buffer t t)
2720 (setq gud-keep-buffer t)))
2721 (save-restriction
2722 (widen)
2723 (goto-char (point-min))
2724 (forward-line (1- line))
2725 (setq pos (point))
2726 (or gud-overlay-arrow-position
2727 (setq gud-overlay-arrow-position (make-marker)))
2728 (set-marker gud-overlay-arrow-position (point) (current-buffer))
2729 ;; If they turned on hl-line, move the hl-line highlight to
2730 ;; the arrow's line.
2731 (when (featurep 'hl-line)
2732 (cond
2733 (global-hl-line-mode
2734 (global-hl-line-highlight))
2735 ((and hl-line-mode hl-line-sticky-flag)
2736 (hl-line-highlight)))))
2737 (cond ((or (< pos (point-min)) (> pos (point-max)))
2738 (widen)
2739 (goto-char pos))))
2740 (when window
2741 (set-window-point window gud-overlay-arrow-position)
2742 (if (eq gud-minor-mode 'gdbmi)
2743 (setq gdb-source-window window)))))))
2745 ;; The gud-call function must do the right thing whether its invoking
2746 ;; keystroke is from the GUD buffer itself (via major-mode binding)
2747 ;; or a C buffer. In the former case, we want to supply data from
2748 ;; gud-last-frame. Here's how we do it:
2750 (defun gud-format-command (str arg)
2751 (let ((insource (not (eq (current-buffer) gud-comint-buffer)))
2752 (frame (or gud-last-frame gud-last-last-frame))
2753 result)
2754 (while (and str
2755 (let ((case-fold-search nil))
2757 (let ((key (string-to-char (match-string 2 str)))
2758 subst)
2759 (cond
2760 ((eq key ?f)
2761 (setq subst (file-name-nondirectory (if insource
2762 (buffer-file-name)
2763 (car frame)))))
2764 ((eq key ?F)
2765 (setq subst (file-name-sans-extension
2766 (file-name-nondirectory (if insource
2767 (buffer-file-name)
2768 (car frame))))))
2769 ((eq key ?d)
2770 (setq subst (file-name-directory (if insource
2771 (buffer-file-name)
2772 (car frame)))))
2773 ((eq key ?l)
2774 (setq subst (int-to-string
2775 (if insource
2776 (save-restriction
2777 (widen)
2778 (+ (count-lines (point-min) (point))
2779 (if (bolp) 1 0)))
2780 (cdr frame)))))
2781 ((eq key ?e)
2782 (setq subst (gud-find-expr)))
2783 ((eq key ?a)
2784 (setq subst (gud-read-address)))
2785 ((eq key ?c)
2786 (setq subst
2787 (gud-find-class
2788 (if insource
2789 (buffer-file-name)
2790 (car frame))
2791 (if insource
2792 (save-restriction
2793 (widen)
2794 (+ (count-lines (point-min) (point))
2795 (if (bolp) 1 0)))
2796 (cdr frame)))))
2797 ((eq key ?p)
2798 (setq subst (if arg (int-to-string arg)))))
2799 (setq result (concat result (match-string 1 str) subst)))
2800 (setq str (substring str (match-end 2))))
2801 ;; There might be text left in STR when the loop ends.
2802 (concat result str)))
2804 (defun gud-read-address ()
2805 "Return a string containing the core-address found in the buffer at point."
2806 (save-match-data
2807 (save-excursion
2808 (let ((pt (point)) found begin)
2809 (setq found (if (search-backward "0x" (- pt 7) t) (point)))
2810 (cond
2811 (found (forward-char 2)
2812 (buffer-substring found
2813 (progn (re-search-forward "[^0-9a-f]")
2814 (forward-char -1)
2815 (point))))
2816 (t (setq begin (progn (re-search-backward "[^0-9]")
2817 (forward-char 1)
2818 (point)))
2819 (forward-char 1)
2820 (re-search-forward "[^0-9]")
2821 (forward-char -1)
2822 (buffer-substring begin (point))))))))
2824 (defun gud-call (fmt &optional arg)
2825 (let ((msg (gud-format-command fmt arg)))
2826 (message "Command: %s" msg)
2827 (sit-for 0)
2828 (gud-basic-call msg)))
2830 (defun gud-basic-call (command)
2831 "Invoke the debugger COMMAND displaying source in other window."
2832 (interactive)
2833 (gud-set-buffer)
2834 (let ((proc (get-buffer-process gud-comint-buffer)))
2835 (or proc (error "Current buffer has no process"))
2836 ;; Arrange for the current prompt to get deleted.
2837 (with-current-buffer gud-comint-buffer
2838 (save-excursion
2839 (save-restriction
2840 (widen)
2841 (if (marker-position gud-delete-prompt-marker)
2842 ;; We get here when printing an expression.
2843 (goto-char gud-delete-prompt-marker)
2844 (goto-char (process-mark proc))
2845 (forward-line 0))
2846 (if (looking-at comint-prompt-regexp)
2847 (set-marker gud-delete-prompt-marker (point)))
2848 (if (eq gud-minor-mode 'gdbmi)
2849 (apply comint-input-sender (list proc command))
2852 (defun gud-refresh (&optional arg)
2853 "Fix up a possibly garbled display, and redraw the arrow."
2854 (interactive "P")
2855 (or gud-last-frame (setq gud-last-frame gud-last-last-frame))
2856 (gud-display-frame)
2857 (recenter arg))
2858 \f
2859 ;; Code for parsing expressions out of C or Fortran code. The single entry
2860 ;; point is gud-find-expr, which tries to return an lvalue expression from
2861 ;; around point.
2863 (defvar gud-find-expr-function 'gud-find-c-expr)
2865 (defun gud-find-expr (&rest args)
2866 (let ((expr (if (and transient-mark-mode mark-active)
2867 (buffer-substring (region-beginning) (region-end))
2868 (apply gud-find-expr-function args))))
2869 (save-match-data
2871 (error "Expression must not include a newline"))
2872 (with-current-buffer gud-comint-buffer
2873 (save-excursion
2874 (goto-char (process-mark (get-buffer-process gud-comint-buffer)))
2875 (forward-line 0)
2876 (when (looking-at comint-prompt-regexp)
2877 (set-marker gud-delete-prompt-marker (point))
2878 (set-marker-insertion-type gud-delete-prompt-marker t))
2879 (unless (eq (buffer-local-value 'gud-minor-mode gud-comint-buffer)
2880 'jdb)
2881 (insert (concat expr " = "))))))
2882 expr))
2884 ;; The next eight functions are hacked from gdbsrc.el by
2885 ;; Debby Ayers <ayers@asc.slb.com>,
2886 ;; Rich Schaefer <schaefer@asc.slb.com> Schlumberger, Austin, Tx.
2888 (defun gud-find-c-expr ()
2889 "Returns the expr that surrounds point."
2890 (interactive)
2891 (save-excursion
2892 (let ((p (point))
2893 (expr (gud-innermost-expr))
2894 (test-expr (gud-prev-expr)))
2895 (while (and test-expr (gud-expr-compound test-expr expr))
2896 (let ((prev-expr expr))
2897 (setq expr (cons (car test-expr) (cdr expr)))
2898 (goto-char (car expr))
2899 (setq test-expr (gud-prev-expr))
2900 ;; If we just pasted on the condition of an if or while,
2901 ;; throw it away again.
2902 (if (member (buffer-substring (car test-expr) (cdr test-expr))
2903 '("if" "while" "for"))
2904 (setq test-expr nil
2905 expr prev-expr))))
2906 (goto-char p)
2907 (setq test-expr (gud-next-expr))
2908 (while (gud-expr-compound expr test-expr)
2909 (setq expr (cons (car expr) (cdr test-expr)))
2910 (setq test-expr (gud-next-expr)))
2911 (buffer-substring (car expr) (cdr expr)))))
2913 (defun gud-innermost-expr ()
2914 "Returns the smallest expr that point is in; move point to beginning of it.
2915 The expr is represented as a cons cell, where the car specifies the point in
2916 the current buffer that marks the beginning of the expr and the cdr specifies
2917 the character after the end of the expr."
2918 (let ((p (point)) begin end)
2919 (gud-backward-sexp)
2920 (setq begin (point))
2921 (gud-forward-sexp)
2922 (setq end (point))
2923 (if (>= p end)
2924 (progn
2925 (setq begin p)
2926 (goto-char p)
2927 (gud-forward-sexp)
2928 (setq end (point)))
2929 )
2930 (goto-char begin)
2931 (cons begin end)))
2933 (defun gud-backward-sexp ()
2934 "Version of `backward-sexp' that catches errors."
2935 (condition-case nil
2936 (backward-sexp)
2937 (error t)))
2939 (defun gud-forward-sexp ()
2940 "Version of `forward-sexp' that catches errors."
2941 (condition-case nil
2942 (forward-sexp)
2943 (error t)))
2945 (defun gud-prev-expr ()
2946 "Returns the previous expr, point is set to beginning of that expr.
2947 The expr is represented as a cons cell, where the car specifies the point in
2948 the current buffer that marks the beginning of the expr and the cdr specifies
2949 the character after the end of the expr"
2950 (let ((begin) (end))
2951 (gud-backward-sexp)
2952 (setq begin (point))
2953 (gud-forward-sexp)
2954 (setq end (point))
2955 (goto-char begin)
2956 (cons begin end)))
2958 (defun gud-next-expr ()
2959 "Returns the following expr, point is set to beginning of that expr.
2960 The expr is represented as a cons cell, where the car specifies the point in
2961 the current buffer that marks the beginning of the expr and the cdr specifies
2962 the character after the end of the expr."
2963 (let ((begin) (end))
2964 (gud-forward-sexp)
2965 (gud-forward-sexp)
2966 (setq end (point))
2967 (gud-backward-sexp)
2968 (setq begin (point))
2969 (cons begin end)))
2971 (defun gud-expr-compound-sep (span-start span-end)
2972 "Scan from SPAN-START to SPAN-END for punctuation characters.
2973 If `->' is found, return `?.'. If `.' is found, return `?.'.
2974 If any other punctuation is found, return `??'.
2975 If no punctuation is found, return `? '."
2976 (let ((result ?\s)
2977 (syntax))
2978 (while (< span-start span-end)
2979 (setq syntax (char-syntax (char-after span-start)))
2980 (cond
2981 ((= syntax ?\s) t)
2982 ((= syntax ?.) (setq syntax (char-after span-start))
2983 (cond
2984 ((= syntax ?.) (setq result ?.))
2985 ((and (= syntax ?-) (= (char-after (+ span-start 1)) ?>))
2986 (setq result ?.)
2987 (setq span-start (+ span-start 1)))
2988 (t (setq span-start span-end)
2989 (setq result ??)))))
2990 (setq span-start (+ span-start 1)))
2991 result))
2993 (defun gud-expr-compound (first second)
2994 "Non-nil if concatenating FIRST and SECOND makes a single C expression.
2995 The two exprs are represented as a cons cells, where the car
2996 specifies the point in the current buffer that marks the beginning of the
2997 expr and the cdr specifies the character after the end of the expr.
2998 Link exprs of the form:
2999 Expr -> Expr
3000 Expr . Expr
3001 Expr (Expr)
3002 Expr [Expr]
3003 (Expr) Expr
3004 [Expr] Expr"
3005 (let ((span-start (cdr first))
3006 (span-end (car second))
3007 (syntax))
3008 (setq syntax (gud-expr-compound-sep span-start span-end))
3009 (cond
3010 ((= (car first) (car second)) nil)
3011 ((= (cdr first) (cdr second)) nil)
3012 ((= syntax ?.) t)
3013 ((= syntax ?\s)
3014 (setq span-start (char-after (- span-start 1)))
3015 (setq span-end (char-after span-end))
3016 (cond
3017 ((= span-start ?)) t)
3018 ((= span-start ?]) t)
3019 ((= span-end ?() t)
3020 ((= span-end ?[) t)
3021 (t nil)))
3022 (t nil))))
3025 (declare-function c-langelem-sym "cc-defs" (langelem))
3026 (declare-function c-langelem-pos "cc-defs" (langelem))
3028 (defun gud-find-class (f _line)
3029 "Find fully qualified class in file F at line LINE.
3030 This function uses the `gud-jdb-classpath' (and optional
3031 `gud-jdb-sourcepath') list(s) to derive a file
3032 pathname relative to its classpath directory. The values in
3033 `gud-jdb-classpath' are assumed to have been converted to absolute
3034 pathname standards using file-truename.
3035 If F is visited by a buffer and its mode is CC-mode(Java),
3036 syntactic information of LINE is used to find the enclosing (nested)
3037 class string which is appended to the top level
3038 class of the file (using s to separate nested class ids)."
3039 ;; Convert f to a standard representation and remove suffix
3040 (if (and gud-jdb-use-classpath (or gud-jdb-classpath gud-jdb-sourcepath))
3041 (save-match-data
3042 (let ((cplist (append gud-jdb-sourcepath gud-jdb-classpath))
3043 (fbuffer (get-file-buffer f))
3044 class-found
3045 ;; Syntax-symbol returns the symbol of the *first* element
3046 ;; in the syntactical analysis result list, syntax-point
3047 ;; returns the buffer position of same
3048 (syntax-symbol (lambda (x) (c-langelem-sym (car x))))
3049 (syntax-point (lambda (x) (c-langelem-pos (car x)))))
3050 (setq f (file-name-sans-extension (file-truename f)))
3051 ;; Search through classpath list for an entry that is
3052 ;; contained in f
3053 (while (and cplist (not class-found))
3054 (if (string-match (car cplist) f)
3055 (setq class-found
3056 (mapconcat 'identity
3057 (split-string
3058 (substring f (+ (match-end 0) 1))
3059 "/") ".")))
3060 (setq cplist (cdr cplist)))
3061 ;; if f is visited by a java(cc-mode) buffer, walk up the
3062 ;; syntactic information chain and collect any 'inclass
3063 ;; symbols until 'topmost-intro is reached to find out if
3064 ;; point is within a nested class
3065 ;; FIXME: Yuck!!! cc-mode should provide a function instead.
3066 (if (and fbuffer (equal (symbol-file 'java-mode) "cc-mode"))
3067 (with-current-buffer fbuffer
3068 (let ((nclass) (syntax))
3069 ;; While the c-syntactic information does not start
3070 ;; with the 'topmost-intro symbol, there may be
3071 ;; nested classes...
3072 (while (not (eq 'topmost-intro
3073 (funcall syntax-symbol (c-guess-basic-syntax))))
3074 ;; Check if the current position c-syntactic
3075 ;; analysis has 'inclass
3076 (setq syntax (c-guess-basic-syntax))
3077 (while
3078 (and (not (eq 'inclass (funcall syntax-symbol syntax)))
3079 (cdr syntax))
3080 (setq syntax (cdr syntax)))
3081 (if (eq 'inclass (funcall syntax-symbol syntax))
3082 (progn
3083 (goto-char (funcall syntax-point syntax))
3084 ;; Now we're at the beginning of a class
3085 ;; definition. Find class name
3086 (looking-at
3088 (setq nclass
3089 (append (list (match-string-no-properties 1))
3090 nclass)))
3091 (setq syntax (c-guess-basic-syntax))
3092 (while (and (not (funcall syntax-point syntax)) (cdr syntax))
3093 (setq syntax (cdr syntax)))
3094 (goto-char (funcall syntax-point syntax))
3095 ))
3096 (string-match (concat (car nclass) "$") class-found)
3097 (setq class-found
3098 (replace-match (mapconcat 'identity nclass "$")
3099 t t class-found)))))
3100 (if (not class-found)
3101 (message "gud-find-class: class for file %s not found!" f))
3102 class-found))
3103 ;; Not using classpath - try class/source association list
3104 (let ((class-found (rassoc f gud-jdb-class-source-alist)))
3105 (if class-found
3106 (car class-found)
3107 (message "gud-find-class: class for file %s not found in gud-jdb-class-source-alist!" f)
3108 nil))))
3110 \f
3111 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3112 ;;; GDB script mode ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3113 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3115 (defvar gdb-script-mode-syntax-table
3116 (let ((st (make-syntax-table)))
3118 (modify-syntax-entry ?# "<" st)
3120 st))
3122 (defvar gdb-script-font-lock-keywords
3127 (defconst gdb-script-syntax-propertize-function
3128 (syntax-propertize-rules
3131 (1 (ignore
3132 (when (and (> (match-beginning 0) (point-min))
3133 (eq 1 (nth 7 (save-excursion
3134 (syntax-ppss (1- (match-beginning 0)))))))
3137 ;; both the beginning and the end of the docstring, which can't be
3138 ;; expressed in syntax-tables. Instead, we place the "> b" after
3139 ;; placing the "< b", so the start marker is overwritten by the
3140 ;; termination marker and in the end Emacs simply considers that
3141 ;; there's no docstring at all, which is fine.
3142 (put-text-property (1- (match-beginning 0)) (match-beginning 0)
3143 'syntax-table (eval-when-compile
3144 (string-to-syntax "> b")))
3145 ;; Make sure that rehighlighting the previous line won't erase our
3146 ;; syntax-table property and that modifying `end' will.
3147 (put-text-property (1- (match-beginning 0)) (match-end 0)
3148 'syntax-multiline t)))))))
3150 (defun gdb-script-font-lock-syntactic-face (state)
3151 (cond
3152 ((nth 3 state) font-lock-string-face)
3153 ((nth 7 state) font-lock-doc-face)
3154 (t font-lock-comment-face)))
3156 (defvar gdb-script-basic-indent 2)
3158 (defun gdb-script-skip-to-head ()
3159 "We're just in front of an `end' and we need to go to its head."
3160 (while (and (re-search-backward "^\\s-*\\(\\(end\\)\\|define\\|document\\|if\\|while\\|commands\\)\\>" nil 'move)
3161 (match-end 2))
3162 (gdb-script-skip-to-head)))
3164 (defun gdb-script-calculate-indentation ()
3165 (cond
3167 (gdb-script-skip-to-head)
3168 (current-indentation))
3171 (match-end 2))
3172 (gdb-script-skip-to-head))
3173 (current-indentation))
3174 (t
3175 (forward-comment (- (point-max)))
3176 (forward-line 0)
3178 (+ (current-indentation)
3180 gdb-script-basic-indent 0)))))
3182 (defun gdb-script-indent-line ()
3183 "Indent current line of GDB script."
3184 (interactive)
3185 (if (and (eq (get-text-property (point) 'face) font-lock-doc-face)
3186 (save-excursion
3187 (forward-line 0)
3190 'noindent
3191 (let* ((savep (point))
3192 (indent (condition-case nil
3193 (save-excursion
3194 (forward-line 0)
3196 (if (>= (point) savep) (setq savep nil))
3197 (max (gdb-script-calculate-indentation) 0))
3198 (error 0))))
3199 (if savep
3200 (save-excursion (indent-line-to indent))
3201 (indent-line-to indent)))))
3203 ;; Derived from cfengine.el.
3204 (defun gdb-script-beginning-of-defun ()
3205 "`beginning-of-defun' function for Gdb script mode.
3206 Treats actions as defuns."
3207 (unless (<= (current-column) (current-indentation))
3208 (end-of-line))
3210 (beginning-of-line)
3211 (goto-char (point-min)))
3212 t)
3214 ;; Derived from cfengine.el.
3215 (defun gdb-script-end-of-defun ()
3216 "`end-of-defun' function for Gdb script mode.
3217 Treats actions as defuns."
3218 (end-of-line)
3219 (if (re-search-forward "^end" nil t)
3220 (beginning-of-line)
3221 (goto-char (point-max)))
3222 t)
3224 ;;;###autoload
3225 (define-derived-mode gdb-script-mode prog-mode "GDB-Script"
3226 "Major mode for editing GDB scripts."
3227 (set (make-local-variable 'comment-start) "#")
3230 (set (make-local-variable 'imenu-generic-expression)
3232 (set (make-local-variable 'indent-line-function) 'gdb-script-indent-line)
3233 (set (make-local-variable 'beginning-of-defun-function)
3234 #'gdb-script-beginning-of-defun)
3235 (set (make-local-variable 'end-of-defun-function)
3236 #'gdb-script-end-of-defun)
3237 (set (make-local-variable 'font-lock-defaults)
3238 '(gdb-script-font-lock-keywords nil nil ((?_ . "w")) nil
3239 (font-lock-syntactic-face-function
3240 . gdb-script-font-lock-syntactic-face)))
3241 ;; Recognize docstrings.
3242 (set (make-local-variable 'syntax-propertize-function)
3243 gdb-script-syntax-propertize-function)
3244 (add-hook 'syntax-propertize-extend-region-functions
3245 #'syntax-propertize-multiline 'append 'local))
3247 \f
3248 ;;; tooltips for GUD
3250 ;;; Customizable settings
3252 ;;;###autoload
3253 (define-minor-mode gud-tooltip-mode
3254 "Toggle the display of GUD tooltips.
3255 With a prefix argument ARG, enable the feature if ARG is
3256 positive, and disable it otherwise. If called from Lisp, enable
3257 it if ARG is omitted or nil."
3258 :global t
3259 :group 'gud
3260 :group 'tooltip
3261 (require 'tooltip)
3262 (if gud-tooltip-mode
3263 (progn
3264 (add-hook 'change-major-mode-hook 'gud-tooltip-change-major-mode)
3265 (add-hook 'pre-command-hook 'tooltip-hide)
3266 (add-hook 'tooltip-functions 'gud-tooltip-tips)
3267 (define-key global-map [mouse-movement] 'gud-tooltip-mouse-motion))
3268 (unless tooltip-mode (remove-hook 'pre-command-hook 'tooltip-hide)
3269 (remove-hook 'change-major-mode-hook 'gud-tooltip-change-major-mode)
3270 (remove-hook 'tooltip-functions 'gud-tooltip-tips)
3271 (define-key global-map [mouse-movement] 'ignore)))
3272 (gud-tooltip-activate-mouse-motions-if-enabled)
3273 (if (and gud-comint-buffer
3274 (buffer-name gud-comint-buffer); gud-comint-buffer might be killed
3275 (eq (buffer-local-value 'gud-minor-mode gud-comint-buffer)
3276 'gdbmi))
3277 (if gud-tooltip-mode
3278 (progn
3279 (dolist (buffer (buffer-list))
3280 (unless (eq buffer gud-comint-buffer)
3281 (with-current-buffer buffer
3282 (when (and (eq gud-minor-mode 'gdbmi)
3284 (buffer-name))))
3285 (make-local-variable 'gdb-define-alist)
3286 (gdb-create-define-alist)
3287 (add-hook 'after-save-hook
3288 'gdb-create-define-alist nil t))))))
3289 (kill-local-variable 'gdb-define-alist)
3290 (remove-hook 'after-save-hook 'gdb-create-define-alist t))))
3292 (define-obsolete-variable-alias 'tooltip-gud-modes
3293 'gud-tooltip-modes "22.1")
3295 (defcustom gud-tooltip-modes '(gud-mode c-mode c++-mode fortran-mode
3296 python-mode)
3297 "List of modes for which to enable GUD tooltips."
3298 :type 'sexp
3299 :group 'gud
3300 :group 'tooltip)
3302 (define-obsolete-variable-alias 'tooltip-gud-display
3303 'gud-tooltip-display "22.1")
3305 (defcustom gud-tooltip-display
3306 '((eq (tooltip-event-buffer gud-tooltip-event)
3307 (marker-buffer gud-overlay-arrow-position)))
3308 "List of forms determining where GUD tooltips are displayed.
3310 Forms in the list are combined with AND. The default is to display
3311 only tooltips in the buffer containing the overlay arrow."
3312 :type 'sexp
3313 :group 'gud
3314 :group 'tooltip)
3316 (defcustom gud-tooltip-echo-area nil
3317 "Use the echo area instead of frames for GUD tooltips."
3318 :type 'boolean
3319 :group 'gud
3320 :group 'tooltip)
3322 ;;; Reacting on mouse movements
3324 (defun gud-tooltip-change-major-mode ()
3325 "Function added to `change-major-mode-hook' when tooltip mode is on."
3326 (add-hook 'post-command-hook 'gud-tooltip-activate-mouse-motions-if-enabled))
3328 (defun gud-tooltip-activate-mouse-motions-if-enabled ()
3329 "Reconsider for all buffers whether mouse motion events are desired."
3330 (remove-hook 'post-command-hook
3331 'gud-tooltip-activate-mouse-motions-if-enabled)
3332 (dolist (buffer (buffer-list))
3333 (with-current-buffer buffer
3334 (if (and gud-tooltip-mode
3335 (memq major-mode gud-tooltip-modes))
3336 (gud-tooltip-activate-mouse-motions t)
3337 (gud-tooltip-activate-mouse-motions nil)))))
3339 (defvar gud-tooltip-mouse-motions-active nil
3340 "Locally t in a buffer if tooltip processing of mouse motion is enabled.")
3342 ;; We don't set track-mouse globally because this is a big redisplay
3343 ;; problem in buffers having a pre-command-hook or such installed,
3344 ;; which does a set-buffer, like the summary buffer of Gnus. Calling
3345 ;; set-buffer prevents redisplay optimizations, so every mouse motion
3346 ;; would be accompanied by a full redisplay.
3348 (defun gud-tooltip-activate-mouse-motions (activatep)
3349 "Activate/deactivate mouse motion events for the current buffer.
3350 ACTIVATEP non-nil means activate mouse motion events."
3351 (if activatep
3352 (progn
3353 (set (make-local-variable 'gud-tooltip-mouse-motions-active) t)
3354 (set (make-local-variable 'track-mouse) t))
3355 (when gud-tooltip-mouse-motions-active
3356 (kill-local-variable 'gud-tooltip-mouse-motions-active)
3357 (kill-local-variable 'track-mouse))))
3359 (defvar tooltip-last-mouse-motion-event)
3360 (declare-function tooltip-hide "tooltip" (&optional ignored-arg))
3361 (declare-function tooltip-start-delayed-tip "tooltip" ())
3363 (defun gud-tooltip-mouse-motion (event)
3364 "Command handler for mouse movement events in `global-map'."
3365 (interactive "e")
3366 (tooltip-hide)
3367 (when (car (mouse-pixel-position))
3368 (setq tooltip-last-mouse-motion-event (copy-sequence event))
3369 (tooltip-start-delayed-tip)))
3371 ;;; Tips for `gud'
3373 (defvar gud-tooltip-original-filter nil
3374 "Process filter to restore after GUD output has been received.")
3376 (defvar gud-tooltip-dereference nil
3377 "Non-nil means print expressions with a `*' in front of them.
3378 For C this would dereference a pointer expression.")
3380 (defvar gud-tooltip-event nil
3381 "The mouse movement event that led to a tooltip display.
3382 This event can be examined by forms in `gud-tooltip-display'.")
3384 (defun gud-tooltip-dereference (&optional arg)
3385 "Toggle whether tooltips should show `* expr' or `expr'.
3386 With arg, dereference expr if ARG is positive, otherwise do not dereference."
3387 (interactive "P")
3388 (setq gud-tooltip-dereference
3389 (if (null arg)
3390 (not gud-tooltip-dereference)
3391 (> (prefix-numeric-value arg) 0)))
3392 (message "Dereferencing is now %s."
3393 (if gud-tooltip-dereference "on" "off")))
3395 (define-obsolete-function-alias 'tooltip-gud-toggle-dereference
3396 'gud-tooltip-dereference "22.1")
3397 (defvar tooltip-use-echo-area)
3398 (declare-function tooltip-show "tooltip" (text &optional use-echo-area))
3399 (declare-function tooltip-strip-prompt "tooltip" (process output))
3401 ; This will only display data that comes in one chunk.
3402 ; Larger arrays (say 400 elements) are displayed in
3403 ; the tooltip incompletely and spill over into the gud buffer.
3404 ; Switching the process-filter creates timing problems and
3405 ; it may be difficult to do better. Using GDB/MI as in
3406 ; gdb-mi.el gets round this problem.
3407 (defun gud-tooltip-process-output (process output)
3408 "Process debugger output and show it in a tooltip window."
3409 (set-process-filter process gud-tooltip-original-filter)
3410 (tooltip-show (tooltip-strip-prompt process output)
3411 (or gud-tooltip-echo-area tooltip-use-echo-area)))
3413 (defun gud-tooltip-print-command (expr)
3414 "Return a suitable command to print the expression EXPR."
3415 (case gud-minor-mode
3416 (gdbmi (concat "-data-evaluate-expression " expr))
3417 (dbx (concat "print " expr))
3418 ((xdb pdb) (concat "p " expr))
3419 (sdb (concat expr "/"))))
3421 (declare-function gdb-input "gdb-mi" (command handler))
3422 (declare-function tooltip-expr-to-print "tooltip" (event))
3423 (declare-function tooltip-event-buffer "tooltip" (event))
3425 (defun gud-tooltip-tips (event)
3426 "Show tip for identifier or selection under the mouse.
3427 The mouse must either point at an identifier or inside a selected
3428 region for the tip window to be shown. If `gud-tooltip-dereference' is t,
3429 add a `*' in front of the printed expression. In the case of a C program
3430 controlled by GDB, show the associated #define directives when program is
3431 not executing.
3433 This function must return nil if it doesn't handle EVENT."
3434 (let (process)
3435 (when (and (eventp event)
3436 gud-tooltip-mode
3437 gud-comint-buffer
3438 (buffer-name gud-comint-buffer); might be killed
3439 (setq process (get-buffer-process gud-comint-buffer))
3440 (posn-point (event-end event))
3441 (or (and (eq gud-minor-mode 'gdbmi) (not gdb-active-process))
3442 (progn (setq gud-tooltip-event event)
3443 (eval (cons 'and gud-tooltip-display)))))
3444 (let ((expr (tooltip-expr-to-print event)))
3445 (when expr
3446 (if (and (eq gud-minor-mode 'gdbmi)
3447 (not gdb-active-process))
3448 (progn
3449 (with-current-buffer (tooltip-event-buffer event)
3450 (let ((define-elt (assoc expr gdb-define-alist)))
3451 (unless (null define-elt)
3452 (tooltip-show
3453 (cdr define-elt)
3454 (or gud-tooltip-echo-area tooltip-use-echo-area))
3455 expr))))
3456 (when gud-tooltip-dereference
3457 (setq expr (concat "*" expr)))
3458 (let ((cmd (gud-tooltip-print-command expr)))
3459 (when (and gud-tooltip-mode (eq gud-minor-mode 'gdb))
3460 (gud-tooltip-mode -1)
3462 so they have been disabled."))
3463 (unless (null cmd) ; CMD can be nil if unknown debugger
3464 (if (eq gud-minor-mode 'gdbmi)
3465 (if gdb-macro-info
3466 (gdb-input
3467 (concat
3469 `(lambda () (gdb-tooltip-print-1 ,expr)))
3470 (gdb-input
3472 `(lambda () (gdb-tooltip-print ,expr))))
3473 (setq gud-tooltip-original-filter (process-filter process))
3474 (set-process-filter process 'gud-tooltip-process-output)
3475 (gud-basic-call cmd))
3476 expr))))))))
3478 (provide 'gud)
3480 ;;; gud.el ends here