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0a688fd0 RS |
1 | ;;; imenu.el --- Framework for mode-specific buffer indexes. |
2 | ||
0272c2a4 | 3 | ;; Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc. |
0a688fd0 RS |
4 | |
5 | ;; Author: Ake Stenhoff <etxaksf@aom.ericsson.se> | |
6 | ;; Lars Lindberg <lli@sypro.cap.se> | |
e4874521 | 7 | ;; Maintainer: FSF |
0a688fd0 | 8 | ;; Created: 8 Feb 1994 |
0a688fd0 | 9 | ;; Keywords: tools |
b578f267 EN |
10 | |
11 | ;; This file is part of GNU Emacs. | |
12 | ||
13 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
0a688fd0 RS |
14 | ;; it under the terms of the GNU General Public License as published by |
15 | ;; the Free Software Foundation; either version 2, or (at your option) | |
16 | ;; any later version. | |
b578f267 EN |
17 | |
18 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
0a688fd0 RS |
19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | ;; GNU General Public License for more details. | |
b578f267 | 22 | |
0a688fd0 | 23 | ;; You should have received a copy of the GNU General Public License |
b578f267 EN |
24 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
25 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
26 | ;; Boston, MA 02111-1307, USA. | |
0a688fd0 RS |
27 | |
28 | ;;; Commentary: | |
b578f267 | 29 | |
0a688fd0 RS |
30 | ;; Purpose of this package: |
31 | ;; To present a framework for mode-specific buffer indexes. | |
32 | ;; A buffer index is an alist of names and buffer positions. | |
33 | ;; For instance all functions in a C-file and their positions. | |
34 | ;; | |
35 | ;; How it works: | |
36 | ||
37 | ;; A mode-specific function is called to generate the index. It is | |
38 | ;; then presented to the user, who can choose from this index. | |
39 | ;; | |
40 | ;; The package comes with a set of example functions for how to | |
41 | ;; utilize this package. | |
42 | ||
2d24227e RS |
43 | ;; There are *examples* for index gathering functions/regular |
44 | ;; expressions for C/C++ and Lisp/Emacs Lisp but it is easy to | |
45 | ;; customize for other modes. A function for jumping to the chosen | |
46 | ;; index position is also supplied. | |
0a688fd0 | 47 | |
26d6bb60 RS |
48 | ;;; Thanks goes to |
49 | ;; [simon] - Simon Leinen simon@lia.di.epfl.ch | |
50 | ;; [dean] - Dean Andrews ada@unison.com | |
5d3b0f18 | 51 | ;; [alon] - Alon Albert al@mercury.co.il |
7804cd27 | 52 | ;; [greg] - Greg Thompson gregt@porsche.visix.COM |
615b306c | 53 | ;; [wolfgang] - Wolfgang Bangerth zcg51122@rpool1.rus.uni-stuttgart.de |
056ab244 | 54 | ;; [kai] - Kai Grossjohann grossjoh@linus.informatik.uni-dortmund.de |
af447694 | 55 | ;; [david] - David M. Smith dsmith@stats.adelaide.edu.au |
2d24227e RS |
56 | ;; [christian] - Christian Egli Christian.Egli@hcsd.hac.com |
57 | ;; [karl] - Karl Fogel kfogel@floss.life.uiuc.edu | |
58 | ||
0a688fd0 | 59 | ;;; Code |
b578f267 | 60 | |
0ee4f8ad | 61 | (eval-when-compile (require 'cl)) |
0a688fd0 RS |
62 | |
63 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
64 | ;;; | |
65 | ;;; Customizable variables | |
66 | ;;; | |
67 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
2d24227e | 68 | |
94114394 RS |
69 | (defgroup imenu nil |
70 | "Mode-specific buffer indexes." | |
71 | :group 'matching | |
72 | :group 'frames) | |
73 | ||
74 | (defcustom imenu-use-markers t | |
e7c8378c RS |
75 | "*Non-nil means use markers instead of integers for Imenu buffer positions. |
76 | Setting this to nil makes Imenu work faster. | |
77 | ||
94114394 RS |
78 | This might not yet be honored by all index-building functions." |
79 | :type 'boolean | |
80 | :group 'imenu) | |
81 | ||
e7c8378c | 82 | |
94114394 RS |
83 | (defcustom imenu-max-item-length 60 |
84 | "*If a number, truncate Imenu entries to that length." | |
85 | :type 'integer | |
86 | :group 'imenu) | |
e7c8378c | 87 | |
9df23821 | 88 | (defcustom imenu-auto-rescan nil |
94114394 RS |
89 | "*Non-nil means Imenu should always rescan the buffers." |
90 | :type 'boolean | |
91 | :group 'imenu) | |
2d24227e | 92 | |
94114394 | 93 | (defcustom imenu-auto-rescan-maxout 60000 |
e7c8378c | 94 | "*Imenu auto-rescan is disabled in buffers larger than this size. |
94114394 RS |
95 | This variable is buffer-local." |
96 | :type 'integer | |
97 | :group 'imenu) | |
0a688fd0 | 98 | |
94114394 | 99 | (defcustom imenu-always-use-completion-buffer-p nil |
0a688fd0 RS |
100 | "*Set this to non-nil for displaying the index in a completion buffer. |
101 | ||
e7c8378c RS |
102 | `never' means never automatically display a listing of any kind. |
103 | A value of nil (the default) means display the index as a mouse menu | |
104 | if the mouse was used to invoke `imenu'. | |
94114394 RS |
105 | Another non-nil value means always display the index in a completion buffer." |
106 | :type '(choice (const :tag "On Mouse" nil) | |
107 | (const :tag "Never" never) | |
108 | (sexp :tag "Always" :format "%t\n" t)) | |
109 | :group 'imenu) | |
0a688fd0 | 110 | |
94114394 | 111 | (defcustom imenu-sort-function nil |
0a688fd0 RS |
112 | "*The function to use for sorting the index mouse-menu. |
113 | ||
114 | Affects only the mouse index menu. | |
115 | ||
116 | Set this to nil if you don't want any sorting (faster). | |
117 | The items in the menu are then presented in the order they were found | |
118 | in the buffer. | |
119 | ||
0ee4f8ad | 120 | Set it to `imenu--sort-by-name' if you want alphabetic sorting. |
0a688fd0 RS |
121 | |
122 | The function should take two arguments and return T if the first | |
123 | element should come before the second. The arguments are cons cells; | |
94114394 RS |
124 | \(NAME . POSITION). Look at `imenu--sort-by-name' for an example." |
125 | :type 'function | |
126 | :group 'imenu) | |
0a688fd0 | 127 | |
94114394 RS |
128 | (defcustom imenu-max-items 25 |
129 | "*Maximum number of elements in a mouse menu for Imenu." | |
130 | :type 'integer | |
131 | :group 'imenu) | |
0a688fd0 | 132 | |
94114394 | 133 | (defcustom imenu-scanning-message "Scanning buffer for index (%3d%%)" |
0a688fd0 | 134 | "*Progress message during the index scanning of the buffer. |
2892dc82 | 135 | If non-nil, user gets a message during the scanning of the buffer. |
0a688fd0 RS |
136 | |
137 | Relevant only if the mode-specific function that creates the buffer | |
94114394 RS |
138 | index use `imenu-progress-message'." |
139 | :type 'string | |
140 | :group 'imenu) | |
0a688fd0 | 141 | |
94114394 | 142 | (defcustom imenu-space-replacement "^" |
0a688fd0 RS |
143 | "*The replacement string for spaces in index names. |
144 | Used when presenting the index in a completion-buffer to make the | |
94114394 RS |
145 | names work as tokens." |
146 | :type 'string | |
147 | :group 'imenu) | |
0a688fd0 | 148 | |
94114394 | 149 | (defcustom imenu-level-separator ":" |
0a688fd0 RS |
150 | "*The separator between index names of different levels. |
151 | Used for making mouse-menu titles and for flattening nested indexes | |
94114394 RS |
152 | with name concatenation." |
153 | :type 'string | |
154 | :group 'imenu) | |
0a688fd0 | 155 | |
2d24227e | 156 | ;;;###autoload |
615b306c | 157 | (defvar imenu-generic-expression nil |
2d24227e RS |
158 | "The regex pattern to use for creating a buffer index. |
159 | ||
01e980fb | 160 | If non-nil this pattern is passed to `imenu--generic-function' |
2d24227e RS |
161 | to create a buffer index. |
162 | ||
215b077e RS |
163 | The value should be an alist with elements that look like this: |
164 | (MENU-TITLE REGEXP INDEX) | |
165 | or like this: | |
166 | (MENU-TITLE REGEXP INDEX FUNCTION ARGUMENTS...) | |
167 | with zero or more ARGUMENTS. The former format creates a simple element in | |
168 | the index alist when it matches; the latter creates a special element | |
169 | of the form (NAME FUNCTION NAME POSITION-MARKER ARGUMENTS...) | |
170 | with FUNCTION and ARGUMENTS beiong copied from `imenu-generic-expression'. | |
2d24227e RS |
171 | |
172 | MENU-TITLE is a string used as the title for the submenu or nil if the | |
173 | entries are not nested. | |
174 | ||
175 | REGEXP is a regexp that should match a construct in the buffer that is | |
6c1bf12b RS |
176 | to be displayed in the menu; i.e., function or variable definitions, |
177 | etc. It contains a substring which is the name to appear in the | |
178 | menu. See the info section on Regexps for more information. | |
2d24227e RS |
179 | |
180 | INDEX points to the substring in REGEXP that contains the name (of the | |
181 | function, variable or type) that is to appear in the menu. | |
615b306c | 182 | |
2d24227e RS |
183 | For emacs-lisp-mode for example PATTERN would look like: |
184 | ||
c30c8a0c RS |
185 | '((nil \"^\\\\s-*(def\\\\(un\\\\|subst\\\\|macro\\\\|advice\\\\)\\\\s-+\\\\([-A-Za-z0-9+]+\\\\)\" 2) |
186 | (\"*Vars*\" \"^\\\\s-*(def\\\\(var\\\\|const\\\\)\\\\s-+\\\\([-A-Za-z0-9+]+\\\\)\" 2) | |
187 | (\"*Types*\" \"^\\\\s-*(def\\\\(type\\\\|struct\\\\|class\\\\|ine-condition\\\\)\\\\s-+\\\\([-A-Za-z0-9+]+\\\\)\" 2)) | |
2d24227e RS |
188 | |
189 | The variable is buffer-local.") | |
190 | ||
af5eb153 | 191 | ;;;###autoload |
6c1bf12b | 192 | (make-variable-buffer-local 'imenu-generic-expression) |
615b306c | 193 | |
0a688fd0 RS |
194 | ;;;; Hooks |
195 | ||
196 | (defvar imenu-create-index-function 'imenu-default-create-index-function | |
197 | "The function to use for creating a buffer index. | |
198 | ||
199 | It should be a function that takes no arguments and returns an index | |
215b077e RS |
200 | of the current buffer as an alist. |
201 | ||
202 | Simple elements in the alist look like (INDEX-NAME . INDEX-POSITION). | |
203 | Special elements look like (INDEX-NAME FUNCTION ARGUMENTS...). | |
204 | A nested sub-alist element looks like (INDEX-NAME SUB-ALIST). | |
205 | The function `imenu--subalist-p' tests an element and returns t | |
206 | if it is a sub-alist. | |
0a688fd0 | 207 | |
0ee4f8ad | 208 | This function is called within a `save-excursion'. |
0a688fd0 RS |
209 | |
210 | The variable is buffer-local.") | |
211 | (make-variable-buffer-local 'imenu-create-index-function) | |
212 | ||
68e01f5a | 213 | (defvar imenu-prev-index-position-function 'beginning-of-defun |
0a688fd0 RS |
214 | "Function for finding the next index position. |
215 | ||
0ee4f8ad RS |
216 | If `imenu-create-index-function' is set to |
217 | `imenu-default-create-index-function', then you must set this variable | |
0a688fd0 RS |
218 | to a function that will find the next index, looking backwards in the |
219 | file. | |
220 | ||
221 | The function should leave point at the place to be connected to the | |
6c1bf12b | 222 | index and it should return nil when it doesn't find another index.") |
68e01f5a | 223 | (make-variable-buffer-local 'imenu-prev-index-position-function) |
0a688fd0 | 224 | |
68e01f5a | 225 | (defvar imenu-extract-index-name-function nil |
0a688fd0 RS |
226 | "Function for extracting the index name. |
227 | ||
0a688fd0 | 228 | This function is called after the function pointed out by |
68e01f5a RS |
229 | `imenu-prev-index-position-function'.") |
230 | (make-variable-buffer-local 'imenu-extract-index-name-function) | |
0a688fd0 | 231 | |
37954a9a RS |
232 | (defvar imenu-default-goto-function 'imenu-default-goto-function |
233 | "The default function called when selecting an Imenu item. | |
234 | The function in this variable is called when selecting a normal index-item.") | |
235 | (make-variable-buffer-local 'imenu-default-goto-function) | |
236 | ||
237 | ||
215b077e RS |
238 | (defun imenu--subalist-p (item) |
239 | (and (consp (cdr item)) (listp (cadr item)) | |
240 | (not (eq (caadr item) 'lambda)))) | |
241 | ||
615b306c KH |
242 | ;;; |
243 | ;;; Macro to display a progress message. | |
244 | ;;; RELPOS is the relative position to display. | |
245 | ;;; If RELPOS is nil, then the relative position in the buffer | |
246 | ;;; is calculated. | |
247 | ;;; PREVPOS is the variable in which we store the last position displayed. | |
248 | (defmacro imenu-progress-message (prevpos &optional relpos reverse) | |
249 | (` (and | |
250 | imenu-scanning-message | |
251 | (let ((pos (, (if relpos | |
252 | relpos | |
253 | (` (imenu--relative-position (, reverse))))))) | |
254 | (if (, (if relpos t | |
255 | (` (> pos (+ 5 (, prevpos)))))) | |
256 | (progn | |
257 | (message imenu-scanning-message pos) | |
258 | (setq (, prevpos) pos))))))) | |
259 | ||
260 | ||
261 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
262 | ;;;; | |
263 | ;;;; Some examples of functions utilizing the framework of this | |
264 | ;;;; package. | |
265 | ;;;; | |
266 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
267 | ||
e064a4f9 | 268 | ;; Return the current/previous sexp and the location of the sexp (its |
615b306c KH |
269 | ;; beginning) without moving the point. |
270 | (defun imenu-example--name-and-position () | |
271 | (save-excursion | |
272 | (forward-sexp -1) | |
e7c8378c RS |
273 | ;; [ydi] modified for imenu-use-markers |
274 | (let ((beg (if imenu-use-markers (point-marker) (point))) | |
275 | (end (progn (forward-sexp) (point)))) | |
615b306c | 276 | (cons (buffer-substring beg end) |
e7c8378c | 277 | beg)))) |
615b306c KH |
278 | |
279 | ;;; | |
280 | ;;; Lisp | |
281 | ;;; | |
282 | ||
283 | (defun imenu-example--lisp-extract-index-name () | |
284 | ;; Example of a candidate for `imenu-extract-index-name-function'. | |
285 | ;; This will generate a flat index of definitions in a lisp file. | |
286 | (save-match-data | |
287 | (and (looking-at "(def") | |
288 | (condition-case nil | |
289 | (progn | |
290 | (down-list 1) | |
291 | (forward-sexp 2) | |
292 | (let ((beg (point)) | |
293 | (end (progn (forward-sexp -1) (point)))) | |
294 | (buffer-substring beg end))) | |
295 | (error nil))))) | |
296 | ||
297 | (defun imenu-example--create-lisp-index () | |
298 | ;; Example of a candidate for `imenu-create-index-function'. | |
299 | ;; It will generate a nested index of definitions. | |
300 | (let ((index-alist '()) | |
301 | (index-var-alist '()) | |
302 | (index-type-alist '()) | |
303 | (index-unknown-alist '()) | |
304 | prev-pos) | |
305 | (goto-char (point-max)) | |
306 | (imenu-progress-message prev-pos 0) | |
307 | ;; Search for the function | |
308 | (while (beginning-of-defun) | |
309 | (imenu-progress-message prev-pos nil t) | |
310 | (save-match-data | |
311 | (and (looking-at "(def") | |
312 | (save-excursion | |
313 | (down-list 1) | |
314 | (cond | |
315 | ((looking-at "def\\(var\\|const\\)") | |
316 | (forward-sexp 2) | |
317 | (push (imenu-example--name-and-position) | |
318 | index-var-alist)) | |
319 | ((looking-at "def\\(un\\|subst\\|macro\\|advice\\)") | |
320 | (forward-sexp 2) | |
321 | (push (imenu-example--name-and-position) | |
322 | index-alist)) | |
323 | ((looking-at "def\\(type\\|struct\\|class\\|ine-condition\\)") | |
324 | (forward-sexp 2) | |
325 | (if (= (char-after (1- (point))) ?\)) | |
326 | (progn | |
327 | (forward-sexp -1) | |
328 | (down-list 1) | |
329 | (forward-sexp 1))) | |
330 | (push (imenu-example--name-and-position) | |
331 | index-type-alist)) | |
332 | (t | |
333 | (forward-sexp 2) | |
334 | (push (imenu-example--name-and-position) | |
335 | index-unknown-alist))))))) | |
336 | (imenu-progress-message prev-pos 100) | |
337 | (and index-var-alist | |
0c20ee61 | 338 | (push (cons "Variables" index-var-alist) |
615b306c KH |
339 | index-alist)) |
340 | (and index-type-alist | |
0c20ee61 | 341 | (push (cons "Types" index-type-alist) |
615b306c KH |
342 | index-alist)) |
343 | (and index-unknown-alist | |
0c20ee61 | 344 | (push (cons "Syntax-unknown" index-unknown-alist) |
615b306c KH |
345 | index-alist)) |
346 | index-alist)) | |
347 | ||
615b306c KH |
348 | ;; Regular expression to find C functions |
349 | (defvar imenu-example--function-name-regexp-c | |
350 | (concat | |
351 | "^[a-zA-Z0-9]+[ \t]?" ; type specs; there can be no | |
352 | "\\([a-zA-Z0-9_*]+[ \t]+\\)?" ; more than 3 tokens, right? | |
353 | "\\([a-zA-Z0-9_*]+[ \t]+\\)?" | |
354 | "\\([*&]+[ \t]*\\)?" ; pointer | |
355 | "\\([a-zA-Z0-9_*]+\\)[ \t]*(" ; name | |
356 | )) | |
357 | ||
358 | (defun imenu-example--create-c-index (&optional regexp) | |
359 | (let ((index-alist '()) | |
360 | prev-pos char) | |
361 | (goto-char (point-min)) | |
362 | (imenu-progress-message prev-pos 0) | |
363 | ;; Search for the function | |
364 | (save-match-data | |
365 | (while (re-search-forward | |
366 | (or regexp imenu-example--function-name-regexp-c) | |
367 | nil t) | |
368 | (imenu-progress-message prev-pos) | |
369 | (backward-up-list 1) | |
370 | (save-excursion | |
371 | (goto-char (scan-sexps (point) 1)) | |
372 | (setq char (following-char))) | |
373 | ;; Skip this function name if it is a prototype declaration. | |
374 | (if (not (eq char ?\;)) | |
375 | (push (imenu-example--name-and-position) index-alist)))) | |
376 | (imenu-progress-message prev-pos 100) | |
377 | (nreverse index-alist))) | |
378 | ||
2d24227e | 379 | |
0a688fd0 RS |
380 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
381 | ;;; | |
382 | ;;; Internal variables | |
383 | ;;; | |
384 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
385 | ||
386 | ;; The item to use in the index for rescanning the buffer. | |
387 | (defconst imenu--rescan-item '("*Rescan*" . -99)) | |
388 | ||
389 | ;; The latest buffer index. | |
390 | ;; Buffer local. | |
391 | (defvar imenu--index-alist nil) | |
392 | (make-variable-buffer-local 'imenu--index-alist) | |
393 | ||
0a8e8bc6 KH |
394 | ;; The latest buffer index used to update the menu bar menu. |
395 | (defvar imenu--last-menubar-index-alist nil) | |
396 | (make-variable-buffer-local 'imenu--last-menubar-index-alist) | |
397 | ||
0a688fd0 | 398 | ;; History list for 'jump-to-function-in-buffer'. |
6c1bf12b | 399 | ;; Making this buffer local caused it not to work! |
0a688fd0 | 400 | (defvar imenu--history-list nil) |
0a688fd0 RS |
401 | |
402 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
403 | ;;; | |
404 | ;;; Internal support functions | |
405 | ;;; | |
406 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
407 | ||
408 | ;;; | |
409 | ;;; Sort function | |
410 | ;;; Sorts the items depending on their index name. | |
411 | ;;; An item look like (NAME . POSITION). | |
412 | ;;; | |
413 | (defun imenu--sort-by-name (item1 item2) | |
414 | (string-lessp (car item1) (car item2))) | |
415 | ||
416 | (defun imenu--relative-position (&optional reverse) | |
417 | ;; Support function to calculate relative position in buffer | |
418 | ;; Beginning of buffer is 0 and end of buffer is 100 | |
419 | ;; If REVERSE is non-nil then the beginning is 100 and the end is 0. | |
420 | (let ((pos (point)) | |
421 | (total (buffer-size))) | |
422 | (and reverse (setq pos (- total pos))) | |
423 | (if (> total 50000) | |
424 | ;; Avoid overflow from multiplying by 100! | |
425 | (/ (1- pos) (max (/ total 100) 1)) | |
426 | (/ (* 100 (1- pos)) (max total 1))))) | |
427 | ||
0a688fd0 RS |
428 | ;; Split LIST into sublists of max length N. |
429 | ;; Example (imenu--split '(1 2 3 4 5 6 7 8) 3)-> '((1 2 3) (4 5 6) (7 8)) | |
430 | (defun imenu--split (list n) | |
431 | (let ((remain list) | |
432 | (result '()) | |
433 | (sublist '()) | |
434 | (i 0)) | |
435 | (while remain | |
436 | (push (pop remain) sublist) | |
437 | (incf i) | |
438 | (and (= i n) | |
439 | ;; We have finished a sublist | |
440 | (progn (push (nreverse sublist) result) | |
441 | (setq i 0) | |
442 | (setq sublist '())))) | |
443 | ;; There might be a sublist (if the length of LIST mod n is != 0) | |
444 | ;; that has to be added to the result list. | |
445 | (and sublist | |
446 | (push (nreverse sublist) result)) | |
447 | (nreverse result))) | |
448 | ||
0c20ee61 RS |
449 | ;;; Split the alist MENULIST into a nested alist, if it is long enough. |
450 | ;;; In any case, add TITLE to the front of the alist. | |
0a688fd0 | 451 | (defun imenu--split-menu (menulist title) |
7ebea144 RS |
452 | (let (keep-at-top tail) |
453 | (if (memq imenu--rescan-item menulist) | |
454 | (setq keep-at-top (cons imenu--rescan-item nil) | |
455 | menulist (delq imenu--rescan-item menulist))) | |
456 | (setq tail menulist) | |
457 | (while tail | |
458 | (if (imenu--subalist-p (car tail)) | |
459 | (setq keep-at-top (cons (car tail) keep-at-top) | |
460 | menulist (delq (car tail) menulist))) | |
461 | (setq tail (cdr tail))) | |
462 | (if imenu-sort-function | |
463 | (setq menulist | |
464 | (sort | |
465 | (let ((res nil) | |
466 | (oldlist menulist)) | |
467 | ;; Copy list method from the cl package `copy-list' | |
468 | (while (consp oldlist) (push (pop oldlist) res)) | |
469 | (prog1 (nreverse res) (setcdr res oldlist))) | |
470 | imenu-sort-function))) | |
471 | (if (> (length menulist) imenu-max-items) | |
472 | (let ((count 0)) | |
473 | (setq menulist | |
474 | (mapcar | |
475 | (function | |
476 | (lambda (menu) | |
477 | (cons (format "From: %s" (caar menu)) menu))) | |
478 | (imenu--split menulist imenu-max-items))))) | |
479 | (cons title | |
480 | (nconc (nreverse keep-at-top) menulist)))) | |
0c20ee61 RS |
481 | |
482 | ;;; Split up each long alist that are nested within ALIST | |
483 | ;;; into nested alists. | |
484 | (defun imenu--split-submenus (alist) | |
485 | (mapcar (function (lambda (elt) | |
486 | (if (and (consp elt) | |
487 | (stringp (car elt)) | |
488 | (listp (cdr elt))) | |
489 | (imenu--split-menu (cdr elt) (car elt)) | |
490 | elt))) | |
491 | alist)) | |
0a688fd0 | 492 | |
e7c8378c RS |
493 | ;;; Truncate all strings in MENULIST to imenu-max-item-length |
494 | (defun imenu--truncate-items (menulist) | |
495 | (mapcar (function | |
496 | (lambda (item) | |
497 | (cond | |
498 | ((consp (cdr item)) | |
499 | (imenu--truncate-items (cdr item))) | |
500 | (t | |
501 | ;; truncate if necessary | |
502 | (if (and (numberp imenu-max-item-length) | |
503 | (> (length (car item)) imenu-max-item-length)) | |
504 | (setcar item (substring (car item) 0 imenu-max-item-length))))))) | |
505 | menulist)) | |
506 | ||
507 | ||
0a8e8bc6 | 508 | (defun imenu--make-index-alist (&optional noerror) |
7e563e04 RS |
509 | "Create an index-alist for the definitions in the current buffer. |
510 | ||
511 | Simple elements in the alist look like (INDEX-NAME . INDEX-POSITION). | |
512 | Special elements look like (INDEX-NAME FUNCTION ARGUMENTS...). | |
513 | A nested sub-alist element looks like (INDEX-NAME SUB-ALIST). | |
514 | The function `imenu--subalist-p' tests an element and returns t | |
515 | if it is a sub-alist. | |
516 | ||
517 | There is one simple element with negative POSITION; that's intended | |
518 | as a way for the user to ask to recalculate the buffer's index alist." | |
2d24227e RS |
519 | (or (and imenu--index-alist |
520 | (or (not imenu-auto-rescan) | |
521 | (and imenu-auto-rescan | |
522 | (> (buffer-size) imenu-auto-rescan-maxout)))) | |
e7c8378c RS |
523 | ;; Get the index; truncate if necessary |
524 | (progn | |
525 | (setq imenu--index-alist | |
526 | (save-excursion | |
527 | (save-restriction | |
528 | (widen) | |
529 | (funcall imenu-create-index-function)))) | |
530 | (imenu--truncate-items imenu--index-alist))) | |
0a8e8bc6 | 531 | (or imenu--index-alist noerror |
6c1bf12b | 532 | (error "No items suitable for an index found in this buffer")) |
0a8e8bc6 KH |
533 | (or imenu--index-alist |
534 | (setq imenu--index-alist (list nil))) | |
0a688fd0 RS |
535 | ;; Add a rescan option to the index. |
536 | (cons imenu--rescan-item imenu--index-alist)) | |
79e098ca | 537 | |
5d3b0f18 RS |
538 | ;;; Find all markers in alist and makes |
539 | ;;; them point nowhere. | |
79e098ca RS |
540 | ;;; The top-level call uses nil as the argument; |
541 | ;;; non-nil arguments are in recursivecalls. | |
542 | (defvar imenu--cleanup-seen) | |
543 | ||
5d3b0f18 | 544 | (defun imenu--cleanup (&optional alist) |
79e098ca RS |
545 | ;; If alist is provided use that list. |
546 | ;; If not, empty the table of lists already seen | |
547 | ;; and use imenu--index-alist. | |
548 | (if alist | |
549 | (setq imenu--cleanup-seen (cons alist imenu--cleanup-seen)) | |
550 | (setq alist imenu--index-alist imenu--cleanup-seen (list alist))) | |
551 | ||
4818d210 | 552 | (and alist |
7804cd27 | 553 | (mapcar |
5d3b0f18 RS |
554 | (function |
555 | (lambda (item) | |
556 | (cond | |
557 | ((markerp (cdr item)) | |
558 | (set-marker (cdr item) nil)) | |
79e098ca RS |
559 | ;; Don't process one alist twice. |
560 | ((memq (cdr item) imenu--cleanup-seen)) | |
215b077e | 561 | ((imenu--subalist-p item) |
5d3b0f18 | 562 | (imenu--cleanup (cdr item)))))) |
4818d210 | 563 | alist) |
615b306c KH |
564 | t)) |
565 | ||
0a8e8bc6 | 566 | (defun imenu--create-keymap-2 (alist counter &optional commands) |
2d24227e RS |
567 | (let ((map nil)) |
568 | (mapcar | |
569 | (function | |
570 | (lambda (item) | |
571 | (cond | |
215b077e | 572 | ((imenu--subalist-p item) |
fc0ac20d KH |
573 | (append (list (setq counter (1+ counter)) |
574 | (car item) 'keymap (car item)) | |
0a8e8bc6 | 575 | (imenu--create-keymap-2 (cdr item) (+ counter 10) commands))) |
2d24227e | 576 | (t |
fc0ac20d KH |
577 | (let ((end (if commands `(lambda () (interactive) |
578 | (imenu--menubar-select ',item)) | |
32c1a22e | 579 | (cons '(nil) item)))) |
2d24227e RS |
580 | (cons (car item) |
581 | (cons (car item) end)))) | |
582 | ))) | |
583 | alist))) | |
584 | ||
0a8e8bc6 KH |
585 | ;; If COMMANDS is non-nil, make a real keymap |
586 | ;; with a real command used as the definition. | |
587 | ;; If it is nil, make something suitable for x-popup-menu. | |
588 | (defun imenu--create-keymap-1 (title alist &optional commands) | |
589 | (append (list 'keymap title) (imenu--create-keymap-2 alist 0 commands))) | |
2d24227e RS |
590 | |
591 | ||
592 | (defun imenu--in-alist (str alist) | |
593 | "Check whether the string STR is contained in multi-level ALIST." | |
594 | (let (elt head tail res) | |
595 | (setq res nil) | |
596 | (while alist | |
597 | (setq elt (car alist) | |
598 | tail (cdr elt) | |
599 | alist (cdr alist) | |
600 | head (car elt)) | |
8396299d RS |
601 | ;; A nested ALIST element looks like |
602 | ;; (INDEX-NAME (INDEX-NAME . INDEX-POSITION) ...) | |
603 | ;; while a bottom-level element looks like | |
604 | ;; (INDEX-NAME . INDEX-POSITION) | |
605 | ;; We are only interested in the bottom-level elements, so we need to | |
606 | ;; recurse if TAIL is a list. | |
607 | (cond ((listp tail) | |
608 | (if (setq res (imenu--in-alist str tail)) | |
609 | (setq alist nil))) | |
610 | ((string= str head) | |
611 | (setq alist nil res elt)))) | |
2d24227e RS |
612 | res)) |
613 | ||
0a688fd0 RS |
614 | (defun imenu-default-create-index-function () |
615 | "*Wrapper for index searching functions. | |
616 | ||
617 | Moves point to end of buffer and then repeatedly calls | |
68e01f5a | 618 | `imenu-prev-index-position-function' and `imenu-extract-index-name-function'. |
0a688fd0 | 619 | Their results are gathered into an index alist." |
3e062f78 RS |
620 | ;; These should really be done by setting imenu-create-index-function |
621 | ;; in these major modes. But save that change for later. | |
e536ef56 KH |
622 | (cond ((and imenu-prev-index-position-function |
623 | imenu-extract-index-name-function) | |
3e062f78 | 624 | (let ((index-alist '()) |
615b306c | 625 | prev-pos name) |
3e062f78 | 626 | (goto-char (point-max)) |
7dea4e70 | 627 | (imenu-progress-message prev-pos 0 t) |
3e062f78 RS |
628 | ;; Search for the function |
629 | (while (funcall imenu-prev-index-position-function) | |
7dea4e70 | 630 | (imenu-progress-message prev-pos nil t) |
3e062f78 RS |
631 | (save-excursion |
632 | (setq name (funcall imenu-extract-index-name-function))) | |
633 | (and (stringp name) | |
e7c8378c RS |
634 | ;; [ydi] updated for imenu-use-markers |
635 | (push (cons name (if imenu-use-markers (point-marker) (point))) | |
636 | index-alist))) | |
7dea4e70 | 637 | (imenu-progress-message prev-pos 100 t) |
615b306c KH |
638 | index-alist)) |
639 | ;; Use generic expression if possible. | |
640 | ((and imenu-generic-expression) | |
e064a4f9 | 641 | (imenu--generic-function imenu-generic-expression)) |
615b306c | 642 | (t |
e7c8378c | 643 | (error "This buffer cannot use `imenu-default-create-index-function'")))) |
0a688fd0 RS |
644 | |
645 | (defun imenu--replace-spaces (name replacement) | |
646 | ;; Replace all spaces in NAME with REPLACEMENT. | |
647 | ;; That second argument should be a string. | |
648 | (mapconcat | |
649 | (function | |
650 | (lambda (ch) | |
651 | (if (char-equal ch ?\ ) | |
652 | replacement | |
653 | (char-to-string ch)))) | |
654 | name | |
655 | "")) | |
656 | ||
657 | (defun imenu--flatten-index-alist (index-alist &optional concat-names prefix) | |
658 | ;; Takes a nested INDEX-ALIST and returns a flat index alist. | |
659 | ;; If optional CONCAT-NAMES is non-nil, then a nested index has its | |
660 | ;; name and a space concatenated to the names of the children. | |
661 | ;; Third argument PREFIX is for internal use only. | |
662 | (mapcan | |
663 | (function | |
664 | (lambda (item) | |
665 | (let* ((name (car item)) | |
666 | (pos (cdr item)) | |
667 | (new-prefix (and concat-names | |
668 | (if prefix | |
669 | (concat prefix imenu-level-separator name) | |
670 | name)))) | |
671 | (cond | |
5d3b0f18 | 672 | ((or (markerp pos) (numberp pos)) |
0a688fd0 RS |
673 | (list (cons new-prefix pos))) |
674 | (t | |
675 | (imenu--flatten-index-alist pos new-prefix)))))) | |
676 | index-alist)) | |
677 | ||
615b306c KH |
678 | ;;; |
679 | ;;; Generic index gathering function. | |
680 | ;;; | |
2d24227e RS |
681 | |
682 | (defun imenu--generic-function (patterns) | |
683 | ;; Built on some ideas that Erik Naggum <erik@naggum.no> once posted | |
684 | ;; to comp.emacs | |
685 | "Return an index of the current buffer as an alist. | |
686 | ||
687 | PATTERN is an alist with elements that look like this: (MENU-TITLE | |
6c1bf12b | 688 | REGEXP INDEX). |
2d24227e RS |
689 | |
690 | MENU-TITLE is a string used as the title for the submenu or nil if the | |
691 | entries are not nested. | |
692 | ||
693 | REGEXP is a regexp that should match a construct in the buffer that is | |
6c1bf12b RS |
694 | to be displayed in the menu; i.e., function or variable definitions, |
695 | etc. It contains a substring which is the name to appear in the | |
696 | menu. See the info section on Regexps for more information. | |
2d24227e RS |
697 | |
698 | INDEX points to the substring in REGEXP that contains the name (of the | |
699 | function, variable or type) that is to appear in the menu. | |
700 | ||
701 | For emacs-lisp-mode for example PATTERN would look like: | |
702 | ||
c30c8a0c RS |
703 | '((nil \"^\\\\s-*(def\\\\(un\\\\|subst\\\\|macro\\\\|advice\\\\)\\\\s-+\\\\([-A-Za-z0-9]+\\\\)\" 2) |
704 | (\"*Vars*\" \"^\\\\s-*(def\\\\(var\\\\|const\\\\)\\\\s-+\\\\([-A-Za-z0-9]+\\\\)\" 2) | |
705 | (\"*Types*\" \"^\\\\s-*(def\\\\(type\\\\|struct\\\\|class\\\\|ine-condition\\\\)\\\\s-+\\\\([-A-Za-z0-9]+\\\\)\" 2))' | |
2d24227e | 706 | |
6c1bf12b RS |
707 | Returns an index of the current buffer as an alist. The elements in |
708 | the alist look like: (INDEX-NAME . INDEX-POSITION). They may also be | |
2d24227e RS |
709 | nested index lists like (INDEX-NAME . INDEX-ALIST) depending on |
710 | pattern. | |
711 | ||
712 | \(imenu--generic-function PATTERN\)." | |
713 | ||
714 | (let ((index-alist (list 'dummy)) | |
715 | (found nil) | |
716 | (global-regexp | |
717 | (concat "\\(" | |
718 | (mapconcat | |
719 | (function (lambda (pattern) (identity (cadr pattern)))) | |
720 | patterns "\\)\\|\\(") | |
721 | "\\)")) | |
722 | prev-pos) | |
723 | ||
615b306c KH |
724 | (goto-char (point-max)) |
725 | (imenu-progress-message prev-pos 0 t) | |
2d24227e RS |
726 | (save-match-data |
727 | (while (re-search-backward global-regexp nil t) | |
728 | (imenu-progress-message prev-pos nil t) | |
729 | (setq found nil) | |
730 | (save-excursion | |
731 | (goto-char (match-beginning 0)) | |
732 | (mapcar | |
733 | (function | |
734 | (lambda (pat) | |
735 | (let ((menu-title (car pat)) | |
736 | (regexp (cadr pat)) | |
215b077e RS |
737 | (index (caddr pat)) |
738 | (function (cadddr pat)) | |
739 | (rest (cddddr pat))) | |
740 | (if (and (not found) ; Only allow one entry; | |
741 | (looking-at regexp)) | |
e7c8378c | 742 | (let ((beg (match-beginning index)) |
215b077e | 743 | (end (match-end index))) |
215b077e RS |
744 | (setq found t) |
745 | (push | |
746 | (let ((name | |
747 | (buffer-substring-no-properties beg end))) | |
e7c8378c RS |
748 | ;; [ydi] updated for imenu-use-markers |
749 | (if imenu-use-markers | |
750 | (setq beg (set-marker (make-marker) beg))) | |
215b077e | 751 | (if function |
37954a9a | 752 | (nconc (list name beg function) |
215b077e RS |
753 | rest) |
754 | (cons name beg))) | |
755 | (cdr | |
756 | (or (assoc menu-title index-alist) | |
757 | (car (push | |
758 | (cons menu-title '()) | |
759 | index-alist)))))))))) | |
0c20ee61 RS |
760 | patterns)))) |
761 | (imenu-progress-message prev-pos 100 t) | |
762 | (let ((main-element (assq nil index-alist))) | |
7ebea144 RS |
763 | (nconc (delq main-element (delq 'dummy index-alist)) |
764 | (cdr main-element))))) | |
615b306c | 765 | |
0a688fd0 RS |
766 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
767 | ;;; | |
768 | ;;; The main functions for this package! | |
769 | ;;; | |
770 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
771 | ||
772 | (defun imenu--completion-buffer (index-alist &optional prompt) | |
773 | "Let the user select from INDEX-ALIST in a completion buffer with PROMPT. | |
774 | ||
775 | Returns t for rescan and otherwise a position number." | |
776 | ;; Create a list for this buffer only when needed. | |
777 | (let (name choice | |
615b306c KH |
778 | (prepared-index-alist |
779 | (mapcar | |
780 | (function | |
781 | (lambda (item) | |
782 | (cons (imenu--replace-spaces (car item) imenu-space-replacement) | |
783 | (cdr item)))) | |
784 | index-alist))) | |
af447694 RS |
785 | (if (eq imenu-always-use-completion-buffer-p 'never) |
786 | (setq name (completing-read (or prompt "Index item: ") | |
787 | prepared-index-alist | |
788 | nil t nil 'imenu--history-list)) | |
789 | (save-window-excursion | |
790 | ;; Display the completion buffer | |
791 | (with-output-to-temp-buffer "*Completions*" | |
792 | (display-completion-list | |
793 | (all-completions "" prepared-index-alist ))) | |
794 | (let ((minibuffer-setup-hook | |
795 | (function (lambda () | |
796 | (let ((buffer (current-buffer))) | |
797 | (save-excursion | |
798 | (set-buffer "*Completions*") | |
799 | (setq completion-reference-buffer buffer))))))) | |
800 | ;; Make a completion question | |
801 | (setq name (completing-read (or prompt "Index item: ") | |
802 | prepared-index-alist | |
803 | nil t nil 'imenu--history-list))))) | |
3e062f78 RS |
804 | (cond ((not (stringp name)) |
805 | nil) | |
806 | ((string= name (car imenu--rescan-item)) | |
807 | t) | |
808 | (t | |
809 | (setq choice (assoc name prepared-index-alist)) | |
215b077e | 810 | (if (imenu--subalist-p choice) |
3e062f78 RS |
811 | (imenu--completion-buffer (cdr choice) prompt) |
812 | choice))))) | |
68e01f5a | 813 | |
0a688fd0 RS |
814 | (defun imenu--mouse-menu (index-alist event &optional title) |
815 | "Let the user select from a buffer index from a mouse menu. | |
816 | ||
817 | INDEX-ALIST is the buffer index and EVENT is a mouse event. | |
818 | ||
32c1a22e | 819 | Returns t for rescan and otherwise an element or subelement of INDEX-ALIST." |
0c20ee61 | 820 | (setq index-alist (imenu--split-submenus index-alist)) |
32c1a22e | 821 | (let* ((menu (imenu--split-menu index-alist |
0a688fd0 RS |
822 | (or title (buffer-name)))) |
823 | position) | |
fdbf0fc7 RS |
824 | (setq menu (imenu--create-keymap-1 (car menu) |
825 | (if (< 1 (length (cdr menu))) | |
826 | (cdr menu) | |
32c1a22e | 827 | (cdr (car (cdr menu)))))) |
0a688fd0 | 828 | (setq position (x-popup-menu event menu)) |
32c1a22e RS |
829 | (cond ((eq position nil) |
830 | position) | |
831 | ;; If one call to x-popup-menu handled the nested menus, | |
832 | ;; find the result by looking down the menus here. | |
833 | ((and (listp position) | |
27f94c9b RS |
834 | (numberp (car position)) |
835 | (stringp (nth (1- (length position)) position))) | |
32c1a22e RS |
836 | (let ((final menu)) |
837 | (while position | |
838 | (setq final (assoc (car position) final)) | |
839 | (setq position (cdr position))) | |
b8c44b29 RS |
840 | (or (string= (car final) (car imenu--rescan-item)) |
841 | (cdr (cdr (cdr final)))))) | |
32c1a22e RS |
842 | ;; If x-popup-menu went just one level and found a leaf item, |
843 | ;; return the INDEX-ALIST element for that. | |
844 | ((and (consp position) | |
845 | (stringp (car position)) | |
27f94c9b | 846 | (null (cdr position))) |
32c1a22e RS |
847 | (or (string= (car position) (car imenu--rescan-item)) |
848 | (assq (car position) index-alist))) | |
849 | ;; If x-popup-menu went just one level | |
850 | ;; and found a non-leaf item (a submenu), | |
851 | ;; recurse to handle the rest. | |
27f94c9b RS |
852 | ((listp position) |
853 | (imenu--mouse-menu position event | |
854 | (if title | |
855 | (concat title imenu-level-separator | |
856 | (car (rassq position index-alist))) | |
32c1a22e | 857 | (car (rassq position index-alist)))))))) |
0a688fd0 | 858 | |
26d6bb60 | 859 | (defun imenu-choose-buffer-index (&optional prompt alist) |
0a688fd0 RS |
860 | "Let the user select from a buffer index and return the chosen index. |
861 | ||
862 | If the user originally activated this function with the mouse, a mouse | |
0a688fd0 RS |
863 | menu is used. Otherwise a completion buffer is used and the user is |
864 | prompted with PROMPT. | |
865 | ||
26d6bb60 RS |
866 | If you call this function with index alist ALIST, then it lets the user |
867 | select from ALIST. | |
868 | ||
0ee4f8ad | 869 | With no index alist ALIST, it calls `imenu--make-index-alist' to |
26d6bb60 RS |
870 | create the index alist. |
871 | ||
0ee4f8ad | 872 | If `imenu-always-use-completion-buffer-p' is non-nil, then the |
0a688fd0 RS |
873 | completion buffer is always used, no matter if the mouse was used or |
874 | not. | |
875 | ||
7e563e04 | 876 | The returned value is of the form (INDEX-NAME . INDEX-POSITION)." |
0a688fd0 | 877 | (let (index-alist |
7dea4e70 | 878 | (mouse-triggered (listp last-nonmenu-event)) |
0a688fd0 RS |
879 | (result t) ) |
880 | ;; If selected by mouse, see to that the window where the mouse is | |
881 | ;; really is selected. | |
882 | (and mouse-triggered | |
4cde72b4 | 883 | (not (equal last-nonmenu-event '(menu-bar))) |
7dea4e70 | 884 | (let ((window (posn-window (event-start last-nonmenu-event)))) |
4a840d8b | 885 | (or (framep window) (null window) (select-window window)))) |
0a688fd0 RS |
886 | ;; Create a list for this buffer only when needed. |
887 | (while (eq result t) | |
26d6bb60 | 888 | (setq index-alist (if alist alist (imenu--make-index-alist))) |
0a688fd0 RS |
889 | (setq result |
890 | (if (and mouse-triggered | |
891 | (not imenu-always-use-completion-buffer-p)) | |
7dea4e70 | 892 | (imenu--mouse-menu index-alist last-nonmenu-event) |
0a688fd0 RS |
893 | (imenu--completion-buffer index-alist prompt))) |
894 | (and (eq result t) | |
5d3b0f18 | 895 | (imenu--cleanup) |
0a688fd0 RS |
896 | (setq imenu--index-alist nil))) |
897 | result)) | |
898 | ||
2d24227e | 899 | ;;;###autoload |
5d3b0f18 | 900 | (defun imenu-add-to-menubar (name) |
d1757026 | 901 | "Adds an `imenu' entry to the menu bar for the current buffer. |
0a8e8bc6 | 902 | NAME is a string used to name the menu bar item. |
d1757026 | 903 | See the command `imenu' for more information." |
0a8e8bc6 | 904 | (interactive "sImenu menu item name: ") |
e536ef56 KH |
905 | (if (or (and imenu-prev-index-position-function |
906 | imenu-extract-index-name-function) | |
907 | imenu-generic-expression | |
908 | (not (eq imenu-create-index-function | |
909 | 'imenu-default-create-index-function))) | |
910 | (let ((newmap (make-sparse-keymap)) | |
911 | (menu-bar (lookup-key (current-local-map) [menu-bar]))) | |
912 | (define-key newmap [menu-bar] | |
913 | (append (make-sparse-keymap) menu-bar)) | |
914 | (define-key newmap [menu-bar index] | |
915 | (cons name (nconc (make-sparse-keymap "Imenu") | |
916 | (make-sparse-keymap)))) | |
917 | (use-local-map (append newmap (current-local-map))) | |
918 | (add-hook 'menu-bar-update-hook 'imenu-update-menubar)) | |
37954a9a | 919 | (error "The mode `%s' does not support Imenu" mode-name))) |
0a8e8bc6 | 920 | |
6d7a4832 KH |
921 | (defvar imenu-buffer-menubar nil) |
922 | ||
0a8e8bc6 KH |
923 | (defun imenu-update-menubar () |
924 | (and (current-local-map) | |
925 | (keymapp (lookup-key (current-local-map) [menu-bar index])) | |
926 | (let ((index-alist (imenu--make-index-alist t))) | |
927 | ;; Don't bother updating if the index-alist has not changed | |
928 | ;; since the last time we did it. | |
929 | (or (equal index-alist imenu--last-menubar-index-alist) | |
930 | (let (menu menu1 old) | |
931 | (setq imenu--last-menubar-index-alist index-alist) | |
0c20ee61 | 932 | (setq index-alist (imenu--split-submenus index-alist)) |
32c1a22e | 933 | (setq menu (imenu--split-menu index-alist |
0a8e8bc6 KH |
934 | (buffer-name))) |
935 | (setq menu1 (imenu--create-keymap-1 (car menu) | |
936 | (if (< 1 (length (cdr menu))) | |
937 | (cdr menu) | |
938 | (cdr (car (cdr menu)))) | |
939 | t)) | |
940 | (setq old (lookup-key (current-local-map) [menu-bar index])) | |
5d43dca8 | 941 | (setcdr old (cdr menu1))))))) |
0a8e8bc6 KH |
942 | |
943 | (defun imenu--menubar-select (item) | |
944 | "Use Imenu to select the function or variable named in this menu item." | |
37954a9a | 945 | (if (equal item imenu--rescan-item) |
e63679b8 RS |
946 | (progn |
947 | (imenu--cleanup) | |
948 | (setq imenu--index-alist nil) | |
949 | (imenu-update-menubar)) | |
950 | (imenu item))) | |
5d3b0f18 | 951 | |
37954a9a | 952 | (defun imenu-default-goto-function (name position &optional rest) |
e7c8378c | 953 | "This function is used for moving the point to POSITION. |
37954a9a RS |
954 | The NAME and REST parameters are not used, they are here just to make |
955 | this function have the same interface as a function placed in a special | |
e7c8378c RS |
956 | index-item." |
957 | (if (or (< position (point-min)) | |
958 | (> position (point-max))) | |
37954a9a RS |
959 | ;; widen if outside narrowing |
960 | (widen)) | |
e7c8378c | 961 | (goto-char position)) |
37954a9a | 962 | |
68e01f5a | 963 | ;;;###autoload |
6c1bf12b | 964 | (defun imenu (index-item) |
68e01f5a | 965 | "Jump to a place in the buffer chosen using a buffer menu or mouse menu. |
0ee4f8ad | 966 | See `imenu-choose-buffer-index' for more information." |
01e980fb | 967 | (interactive (list (imenu-choose-buffer-index))) |
0a8e8bc6 KH |
968 | ;; Convert a string to an alist element. |
969 | (if (stringp index-item) | |
970 | (setq index-item (assoc index-item (imenu--make-index-alist)))) | |
6c1bf12b RS |
971 | (and index-item |
972 | (progn | |
973 | (push-mark) | |
37954a9a RS |
974 | (let* ((is-special-item (listp (cdr index-item))) |
975 | (function | |
976 | (if is-special-item | |
977 | (caddr index-item) imenu-default-goto-function)) | |
978 | (position (if is-special-item | |
979 | (cadr index-item) (cdr index-item))) | |
980 | (rest (if is-special-item (cddr index-item)))) | |
981 | (apply function (car index-item) position rest))))) | |
5d3b0f18 | 982 | |
0a688fd0 RS |
983 | (provide 'imenu) |
984 | ||
985 | ;;; imenu.el ends here |