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c0274f38 | 1 | ;;; completion.el --- dynamic word-completion code |
b578f267 | 2 | |
5ff436fb | 3 | ;; Copyright (C) 1990, 1993, 1995 Free Software Foundation, Inc. |
c0274f38 | 4 | |
af4d5234 | 5 | ;; Maintainer: FSF |
e9571d2a | 6 | ;; Keywords: abbrev |
32168d16 | 7 | ;; Author: Jim Salem <alem@bbnplanet.com> of Thinking Machines Inc. |
9d0eba57 | 8 | ;; (ideas suggested by Brewster Kahle) |
d1c7011d | 9 | |
1add72b5 | 10 | ;; This file is part of GNU Emacs. |
d1c7011d | 11 | |
1add72b5 RS |
12 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
13 | ;; it under the terms of the GNU General Public License as published by | |
14 | ;; the Free Software Foundation; either version 2, or (at your option) | |
15 | ;; any later version. | |
16 | ||
17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;; GNU General Public License for more details. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
24 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
25 | ;; Boston, MA 02111-1307, USA. | |
1add72b5 RS |
26 | |
27 | ;;; Commentary: | |
b578f267 EN |
28 | |
29 | ;; What to put in .emacs | |
30 | ;;----------------------- | |
31 | ;; (load "completion") | |
32 | ;; (initialize-completions) | |
59ca07b5 | 33 | \f |
b578f267 EN |
34 | ;;--------------------------------------------------------------------------- |
35 | ;; Documentation [Slightly out of date] | |
36 | ;;--------------------------------------------------------------------------- | |
37 | ;; (also check the documentation string of the functions) | |
38 | ;; | |
39 | ;; Introduction | |
40 | ;;--------------- | |
41 | ;; | |
42 | ;; After you type a few characters, pressing the "complete" key inserts | |
43 | ;; the rest of the word you are likely to type. | |
44 | ;; | |
45 | ;; This watches all the words that you type and remembers them. When | |
46 | ;; typing a new word, pressing "complete" (meta-return) "completes" the | |
47 | ;; word by inserting the most recently used word that begins with the | |
48 | ;; same characters. If you press meta-return repeatedly, it cycles | |
49 | ;; through all the words it knows about. | |
50 | ;; | |
51 | ;; If you like the completion then just continue typing, it is as if you | |
52 | ;; entered the text by hand. If you want the inserted extra characters | |
53 | ;; to go away, type control-w or delete. More options are described below. | |
54 | ;; | |
55 | ;; The guesses are made in the order of the most recently "used". Typing | |
56 | ;; in a word and then typing a separator character (such as a space) "uses" | |
57 | ;; the word. So does moving a cursor over the word. If no words are found, | |
58 | ;; it uses an extended version of the dabbrev style completion. | |
59 | ;; | |
60 | ;; You automatically save the completions you use to a file between | |
61 | ;; sessions. | |
62 | ;; | |
63 | ;; Completion enables programmers to enter longer, more descriptive | |
64 | ;; variable names while typing fewer keystrokes than they normally would. | |
65 | ;; | |
66 | ;; | |
67 | ;; Full documentation | |
68 | ;;--------------------- | |
69 | ;; | |
70 | ;; A "word" is any string containing characters with either word or symbol | |
71 | ;; syntax. [E.G. Any alphanumeric string with hyphens, underscores, etc.] | |
72 | ;; Unless you change the constants, you must type at least three characters | |
73 | ;; for the word to be recognized. Only words longer than 6 characters are | |
74 | ;; saved. | |
75 | ;; | |
76 | ;; When you load this file, completion will be on. I suggest you use the | |
77 | ;; compiled version (because it is noticeably faster). | |
78 | ;; | |
79 | ;; M-X completion-mode toggles whether or not new words are added to the | |
80 | ;; database by changing the value of enable-completion. | |
81 | ;; | |
82 | ;; SAVING/LOADING COMPLETIONS | |
83 | ;; Completions are automatically saved from one session to another | |
84 | ;; (unless save-completions-flag or enable-completion is nil). | |
85 | ;; Loading this file (or calling initialize-completions) causes EMACS | |
86 | ;; to load a completions database for a saved completions file | |
87 | ;; (default: ~/.completions). When you exit, EMACS saves a copy of the | |
88 | ;; completions that you | |
89 | ;; often use. When you next start, EMACS loads in the saved completion file. | |
90 | ;; | |
91 | ;; The number of completions saved depends loosely on | |
92 | ;; *saved-completions-decay-factor*. Completions that have never been | |
93 | ;; inserted via "complete" are not saved. You are encouraged to experiment | |
94 | ;; with different functions (see compute-completion-min-num-uses). | |
95 | ;; | |
96 | ;; Some completions are permanent and are always saved out. These | |
97 | ;; completions have their num-uses slot set to T. Use | |
98 | ;; add-permanent-completion to do this | |
99 | ;; | |
100 | ;; Completions are saved only if enable-completion is T. The number of old | |
101 | ;; versions kept of the saved completions file is controlled by | |
102 | ;; completions-file-versions-kept. | |
103 | ;; | |
104 | ;; COMPLETE KEY OPTIONS | |
105 | ;; The complete function takes a numeric arguments. | |
106 | ;; control-u :: leave the point at the beginning of the completion rather | |
107 | ;; than the middle. | |
108 | ;; a number :: rotate through the possible completions by that amount | |
109 | ;; `-' :: same as -1 (insert previous completion) | |
110 | ;; | |
111 | ;; HOW THE DATABASE IS MAINTAINED | |
112 | ;; <write> | |
113 | ;; | |
114 | ;; UPDATING THE DATABASE MANUALLY | |
115 | ;; m-x kill-completion | |
116 | ;; kills the completion at point. | |
117 | ;; m-x add-completion | |
118 | ;; m-x add-permanent-completion | |
119 | ;; | |
120 | ;; UPDATING THE DATABASE FROM A SOURCE CODE FILE | |
121 | ;; m-x add-completions-from-buffer | |
122 | ;; Parses all the definition names from a C or LISP mode buffer and | |
123 | ;; adds them to the completion database. | |
124 | ;; | |
125 | ;; m-x add-completions-from-lisp-file | |
126 | ;; Parses all the definition names from a C or Lisp mode file and | |
127 | ;; adds them to the completion database. | |
128 | ;; | |
129 | ;; UPDATING THE DATABASE FROM A TAGS TABLE | |
130 | ;; m-x add-completions-from-tags-table | |
131 | ;; Adds completions from the current tags-table-buffer. | |
132 | ;; | |
133 | ;; HOW A COMPLETION IS FOUND | |
134 | ;; <write> | |
135 | ;; | |
136 | ;; STRING CASING | |
137 | ;; Completion is string case independent if case-fold-search has its | |
138 | ;; normal default of T. Also when the completion is inserted the case of the | |
139 | ;; entry is coerced appropriately. | |
140 | ;; [E.G. APP --> APPROPRIATELY app --> appropriately | |
141 | ;; App --> Appropriately] | |
142 | ;; | |
143 | ;; INITIALIZATION | |
144 | ;; The form `(initialize-completions)' initializes the completion system by | |
145 | ;; trying to load in the user's completions. After the first cal, further | |
146 | ;; calls have no effect so one should be careful not to put the form in a | |
147 | ;; site's standard site-init file. | |
148 | ;; | |
149 | ;;--------------------------------------------------------------------------- | |
150 | ;; | |
151 | ;; | |
59ca07b5 | 152 | \f |
b578f267 EN |
153 | ;;--------------------------------------------------------------------------- |
154 | ;; Functions you might like to call | |
155 | ;;--------------------------------------------------------------------------- | |
156 | ;; | |
157 | ;; add-completion string &optional num-uses | |
158 | ;; Adds a new string to the database | |
159 | ;; | |
160 | ;; add-permanent-completion string | |
161 | ;; Adds a new string to the database with num-uses = T | |
162 | ;; | |
163 | ||
164 | ;; kill-completion string | |
165 | ;; Kills the completion from the database. | |
166 | ;; | |
167 | ;; clear-all-completions | |
168 | ;; Clears the database | |
169 | ;; | |
170 | ;; list-all-completions | |
171 | ;; Returns a list of all completions. | |
172 | ;; | |
173 | ;; | |
174 | ;; next-completion string &optional index | |
175 | ;; Returns a completion entry that starts with string. | |
176 | ;; | |
177 | ;; find-exact-completion string | |
178 | ;; Returns a completion entry that exactly matches string. | |
179 | ;; | |
180 | ;; complete | |
181 | ;; Inserts a completion at point | |
182 | ;; | |
183 | ;; initialize-completions | |
184 | ;; Loads the completions file and sets up so that exiting emacs will | |
185 | ;; save them. | |
186 | ;; | |
187 | ;; save-completions-to-file &optional filename | |
188 | ;; load-completions-from-file &optional filename | |
189 | ;; | |
190 | ;;----------------------------------------------- | |
191 | ;; Other functions | |
192 | ;;----------------------------------------------- | |
193 | ;; | |
194 | ;; get-completion-list string | |
195 | ;; | |
196 | ;; These things are for manipulating the structure | |
197 | ;; make-completion string num-uses | |
198 | ;; completion-num-uses completion | |
199 | ;; completion-string completion | |
200 | ;; set-completion-num-uses completion num-uses | |
201 | ;; set-completion-string completion string | |
202 | ;; | |
203 | ;; | |
59ca07b5 | 204 | \f |
b578f267 EN |
205 | ;;----------------------------------------------- |
206 | ;; To Do :: (anybody ?) | |
207 | ;;----------------------------------------------- | |
208 | ;; | |
209 | ;; Implement Lookup and keyboard interface in C | |
210 | ;; Add package prefix smarts (for Common Lisp) | |
211 | ;; Add autoprompting of possible completions after every keystroke (fast | |
212 | ;; terminals only !) | |
213 | ;; Add doc. to texinfo | |
214 | ;; | |
215 | ;; | |
216 | ;;----------------------------------------------- | |
217 | ;; Change Log: | |
218 | ;;----------------------------------------------- | |
219 | ;; Sometime in '84 Brewster implemented a somewhat buggy version for | |
220 | ;; Symbolics LISPMs. | |
221 | ;; Jan. '85 Jim became enamored of the idea and implemented a faster, | |
222 | ;; more robust version. | |
223 | ;; With input from many users at TMC, (rose, craig, and gls come to mind), | |
224 | ;; the current style of interface was developed. | |
225 | ;; 9/87, Jim and Brewster took terminals home. Yuck. After | |
226 | ;; complaining for a while Brewster implemented a subset of the current | |
227 | ;; LISPM version for GNU Emacs. | |
228 | ;; 8/88 After complaining for a while (and with sufficient | |
229 | ;; promised rewards), Jim reimplemented a version of GNU completion | |
230 | ;; superior to that of the LISPM version. | |
231 | ;; | |
232 | ;;----------------------------------------------- | |
233 | ;; Acknowledgements | |
234 | ;;----------------------------------------------- | |
235 | ;; Cliff Lasser (cal@think.com), Kevin Herbert (kph@cisco.com), | |
236 | ;; eero@media-lab, kgk@cs.brown.edu, jla@ai.mit.edu, | |
237 | ;; | |
238 | ;;----------------------------------------------- | |
239 | ;; Change Log | |
240 | ;;----------------------------------------------- | |
241 | ;; From version 9 to 10 | |
242 | ;; - Allowance for non-integral *completion-version* nos. | |
243 | ;; - Fix cmpl-apply-as-top-level for keyboard macros | |
244 | ;; - Fix broken completion merging (in save-completions-to-file) | |
245 | ;; - More misc. fixes for version 19.0 of emacs | |
246 | ;; | |
247 | ;; From Version 8 to 9 | |
248 | ;; - Ported to version 19.0 of emacs (backcompatible with version 18) | |
249 | ;; - Added add-completions-from-tags-table (with thanks to eero@media-lab) | |
250 | ;; | |
251 | ;; From Version 7 to 8 | |
252 | ;; - Misc. changes to comments | |
253 | ;; - new completion key bindings: c-x o, M->, M-<, c-a, c-e | |
254 | ;; - cdabbrev now checks all the visible window buffers and the "other buffer" | |
255 | ;; - `%' is now a symbol character rather than a separator (except in C mode) | |
256 | ;; | |
257 | ;; From Version 6 to 7 | |
258 | ;; - Fixed bug with saving out .completion file the first time | |
259 | ;; | |
260 | ;; From Version 5 to 6 | |
261 | ;; - removed statistics recording | |
262 | ;; - reworked advise to handle autoloads | |
263 | ;; - Fixed fortran mode support | |
264 | ;; - Added new cursor motion triggers | |
265 | ;; | |
266 | ;; From Version 4 to 5 | |
267 | ;; - doesn't bother saving if nothing has changed | |
268 | ;; - auto-save if haven't used for a 1/2 hour | |
269 | ;; - save period extended to two weeks | |
270 | ;; - minor fix to capitalization code | |
271 | ;; - added *completion-auto-save-period* to variables recorded. | |
272 | ;; - added reenter protection to cmpl-record-statistics-filter | |
273 | ;; - added backup protection to save-completions-to-file (prevents | |
274 | ;; problems with disk full errors) | |
59ca07b5 | 275 | \f |
d1c7011d ER |
276 | ;;; Code: |
277 | ||
b578f267 EN |
278 | ;;--------------------------------------------------------------------------- |
279 | ;; User changeable parameters | |
280 | ;;--------------------------------------------------------------------------- | |
59ca07b5 | 281 | |
a7a2b1f6 RS |
282 | (defvar enable-completion t |
283 | "*Non-nil means enable recording and saving of completions. | |
284 | If nil, no new words added to the database or saved to the init file.") | |
59ca07b5 | 285 | |
a7a2b1f6 RS |
286 | (defvar save-completions-flag t |
287 | "*Non-nil means save most-used completions when exiting Emacs. | |
288 | See also `saved-completions-retention-time'.") | |
59ca07b5 | 289 | |
16b95d04 | 290 | (defvar save-completions-file-name (convert-standard-filename "~/.completions") |
59ca07b5 RS |
291 | "*The filename to save completions to.") |
292 | ||
a7a2b1f6 RS |
293 | (defvar save-completions-retention-time 336 |
294 | "*Discard a completion if unused for this many hours. | |
295 | \(1 day = 24, 1 week = 168). If this is 0, non-permanent completions | |
353ea2e6 | 296 | will not be saved unless these are used. Default is two weeks.") |
59ca07b5 | 297 | |
a7a2b1f6 RS |
298 | (defvar completion-on-separator-character nil |
299 | "*Non-nil means separator characters mark previous word as used. | |
300 | This means the word will be saved as a completion.") | |
59ca07b5 | 301 | |
a7a2b1f6 RS |
302 | (defvar completions-file-versions-kept kept-new-versions |
303 | "*Number of versions to keep for the saved completions file.") | |
59ca07b5 | 304 | |
a7a2b1f6 RS |
305 | (defvar completion-prompt-speed-threshold 4800 |
306 | "*Minimum output speed at which to display next potential completion.") | |
59ca07b5 | 307 | |
a7a2b1f6 RS |
308 | (defvar completion-cdabbrev-prompt-flag nil |
309 | "*If non-nil, the next completion prompt does a cdabbrev search. | |
59ca07b5 RS |
310 | This can be time consuming.") |
311 | ||
a7a2b1f6 RS |
312 | (defvar completion-search-distance 15000 |
313 | "*How far to search in the buffer when looking for completions. | |
314 | In number of characters. If nil, search the whole buffer.") | |
59ca07b5 | 315 | |
a7a2b1f6 RS |
316 | (defvar completions-merging-modes '(lisp c) |
317 | "*List of modes {`c' or `lisp'} for automatic completions merging. | |
318 | Definitions from visited files which have these modes | |
319 | are automatically added to the completion database.") | |
59ca07b5 | 320 | |
b578f267 EN |
321 | ;;(defvar *record-cmpl-statistics-p* nil |
322 | ;; "*If non-nil, record completion statistics.") | |
59ca07b5 | 323 | |
b578f267 EN |
324 | ;;(defvar *completion-auto-save-period* 1800 |
325 | ;; "*The period in seconds to wait for emacs to be idle before autosaving | |
326 | ;;the completions. Default is a 1/2 hour.") | |
59ca07b5 | 327 | |
a7a2b1f6 | 328 | (defconst completion-min-length nil ;; defined below in eval-when |
59ca07b5 RS |
329 | "*The minimum length of a stored completion. |
330 | DON'T CHANGE WITHOUT RECOMPILING ! This is used by macros.") | |
331 | ||
a7a2b1f6 | 332 | (defconst completion-max-length nil ;; defined below in eval-when |
59ca07b5 RS |
333 | "*The maximum length of a stored completion. |
334 | DON'T CHANGE WITHOUT RECOMPILING ! This is used by macros.") | |
335 | ||
a7a2b1f6 | 336 | (defconst completion-prefix-min-length nil ;; defined below in eval-when |
59ca07b5 RS |
337 | "The minimum length of a completion search string. |
338 | DON'T CHANGE WITHOUT RECOMPILING ! This is used by macros.") | |
339 | ||
340 | (defmacro eval-when-compile-load-eval (&rest body) | |
341 | ;; eval everything before expanding | |
342 | (mapcar 'eval body) | |
353ea2e6 | 343 | (cons 'progn body)) |
59ca07b5 | 344 | |
136f8f67 RS |
345 | (eval-when-compile |
346 | (defvar completion-gensym-counter 0) | |
347 | (defun completion-gensym (&optional arg) | |
348 | "Generate a new uninterned symbol. | |
349 | The name is made by appending a number to PREFIX, default \"G\"." | |
350 | (let ((prefix (if (stringp arg) arg "G")) | |
351 | (num (if (integerp arg) arg | |
352 | (prog1 completion-gensym-counter | |
353 | (setq completion-gensym-counter (1+ completion-gensym-counter)))))) | |
354 | (make-symbol (format "%s%d" prefix num))))) | |
355 | ||
356 | (defmacro completion-dolist (spec &rest body) | |
357 | "(completion-dolist (VAR LIST [RESULT]) BODY...): loop over a list. | |
358 | Evaluate BODY with VAR bound to each `car' from LIST, in turn. | |
359 | Then evaluate RESULT to get return value, default nil." | |
360 | (let ((temp (completion-gensym "--dolist-temp--"))) | |
361 | (append (list 'let (list (list temp (nth 1 spec)) (car spec)) | |
362 | (append (list 'while temp | |
363 | (list 'setq (car spec) (list 'car temp))) | |
364 | body (list (list 'setq temp | |
365 | (list 'cdr temp))))) | |
366 | (if (cdr (cdr spec)) | |
367 | (cons (list 'setq (car spec) nil) (cdr (cdr spec))) | |
368 | '(nil))))) | |
369 | ||
59ca07b5 RS |
370 | (defun completion-eval-when () |
371 | (eval-when-compile-load-eval | |
372 | ;; These vars. are defined at both compile and load time. | |
a7a2b1f6 RS |
373 | (setq completion-min-length 6) |
374 | (setq completion-max-length 200) | |
375 | (setq completion-prefix-min-length 3))) | |
59ca07b5 RS |
376 | |
377 | (completion-eval-when) | |
378 | ||
b578f267 EN |
379 | ;;--------------------------------------------------------------------------- |
380 | ;; Internal Variables | |
381 | ;;--------------------------------------------------------------------------- | |
59ca07b5 RS |
382 | |
383 | (defvar cmpl-initialized-p nil | |
a7a2b1f6 RS |
384 | "Set to t when the completion system is initialized. |
385 | Indicates that the old completion file has been read in.") | |
59ca07b5 RS |
386 | |
387 | (defvar cmpl-completions-accepted-p nil | |
a7a2b1f6 RS |
388 | "Set to t as soon as the first completion has been accepted. |
389 | Used to decide whether to save completions.") | |
59ca07b5 | 390 | |
136f8f67 | 391 | (defvar cmpl-preceding-syntax) |
438c6ef0 RS |
392 | |
393 | (defvar completion-string) | |
59ca07b5 | 394 | \f |
b578f267 EN |
395 | ;;--------------------------------------------------------------------------- |
396 | ;; Low level tools | |
397 | ;;--------------------------------------------------------------------------- | |
59ca07b5 | 398 | |
b578f267 EN |
399 | ;;----------------------------------------------- |
400 | ;; Misc. | |
401 | ;;----------------------------------------------- | |
59ca07b5 | 402 | |
59ca07b5 RS |
403 | (defun minibuffer-window-selected-p () |
404 | "True iff the current window is the minibuffer." | |
a7a2b1f6 | 405 | (window-minibuffer-p (selected-window))) |
59ca07b5 | 406 | |
46f950ca | 407 | ;; This used to be `(eval form)'. Eval FORM at run time now. |
a7a2b1f6 | 408 | (defmacro cmpl-read-time-eval (form) |
46f950ca | 409 | form) |
59ca07b5 | 410 | |
b578f267 EN |
411 | ;;----------------------------------------------- |
412 | ;; String case coercion | |
413 | ;;----------------------------------------------- | |
59ca07b5 RS |
414 | |
415 | (defun cmpl-string-case-type (string) | |
416 | "Returns :capitalized, :up, :down, :mixed, or :neither." | |
417 | (let ((case-fold-search nil)) | |
418 | (cond ((string-match "[a-z]" string) | |
419 | (cond ((string-match "[A-Z]" string) | |
420 | (cond ((and (> (length string) 1) | |
421 | (null (string-match "[A-Z]" string 1))) | |
422 | ':capitalized) | |
423 | (t | |
424 | ':mixed))) | |
425 | (t ':down))) | |
426 | (t | |
427 | (cond ((string-match "[A-Z]" string) | |
428 | ':up) | |
429 | (t ':neither)))) | |
430 | )) | |
431 | ||
b578f267 EN |
432 | ;; Tests - |
433 | ;; (cmpl-string-case-type "123ABCDEF456") --> :up | |
434 | ;; (cmpl-string-case-type "123abcdef456") --> :down | |
435 | ;; (cmpl-string-case-type "123aBcDeF456") --> :mixed | |
436 | ;; (cmpl-string-case-type "123456") --> :neither | |
437 | ;; (cmpl-string-case-type "Abcde123") --> :capitalized | |
59ca07b5 RS |
438 | |
439 | (defun cmpl-coerce-string-case (string case-type) | |
440 | (cond ((eq case-type ':down) (downcase string)) | |
441 | ((eq case-type ':up) (upcase string)) | |
442 | ((eq case-type ':capitalized) | |
443 | (setq string (downcase string)) | |
444 | (aset string 0 (logand ?\337 (aref string 0))) | |
445 | string) | |
446 | (t string) | |
447 | )) | |
448 | ||
449 | (defun cmpl-merge-string-cases (string-to-coerce given-string) | |
450 | (let ((string-case-type (cmpl-string-case-type string-to-coerce)) | |
451 | ) | |
452 | (cond ((memq string-case-type '(:down :up :capitalized)) | |
453 | ;; Found string is in a standard case. Coerce to a type based on | |
454 | ;; the given string | |
455 | (cmpl-coerce-string-case string-to-coerce | |
456 | (cmpl-string-case-type given-string)) | |
457 | ) | |
458 | (t | |
459 | ;; If the found string is in some unusual case, just insert it | |
460 | ;; as is | |
461 | string-to-coerce) | |
462 | ))) | |
463 | ||
b578f267 EN |
464 | ;; Tests - |
465 | ;; (cmpl-merge-string-cases "AbCdEf456" "abc") --> AbCdEf456 | |
466 | ;; (cmpl-merge-string-cases "abcdef456" "ABC") --> ABCDEF456 | |
467 | ;; (cmpl-merge-string-cases "ABCDEF456" "Abc") --> Abcdef456 | |
468 | ;; (cmpl-merge-string-cases "ABCDEF456" "abc") --> abcdef456 | |
59ca07b5 RS |
469 | |
470 | \f | |
a7a2b1f6 RS |
471 | (defun cmpl-hours-since-origin () |
472 | (let ((time (current-time))) | |
46f950ca RS |
473 | (truncate |
474 | (+ (* (/ (car time) 3600.0) (lsh 1 16)) | |
475 | (/ (nth 2 time) 3600.0))))) | |
59ca07b5 | 476 | \f |
b578f267 EN |
477 | ;;--------------------------------------------------------------------------- |
478 | ;; "Symbol" parsing functions | |
479 | ;;--------------------------------------------------------------------------- | |
480 | ;; The functions symbol-before-point, symbol-under-point, etc. quickly return | |
481 | ;; an appropriate symbol string. The strategy is to temporarily change | |
482 | ;; the syntax table to enable fast symbol searching. There are three classes | |
483 | ;; of syntax in these "symbol" syntax tables :: | |
484 | ;; | |
485 | ;; syntax (?_) - "symbol" chars (e.g. alphanumerics) | |
486 | ;; syntax (?w) - symbol chars to ignore at end of words (e.g. period). | |
487 | ;; syntax (? ) - everything else | |
488 | ;; | |
489 | ;; Thus by judicious use of scan-sexps and forward-word, we can get | |
490 | ;; the word we want relatively fast and without consing. | |
491 | ;; | |
492 | ;; Why do we need a separate category for "symbol chars to ignore at ends" ? | |
493 | ;; For example, in LISP we want starting :'s trimmed | |
494 | ;; so keyword argument specifiers also define the keyword completion. And, | |
495 | ;; for example, in C we want `.' appearing in a structure ref. to | |
496 | ;; be kept intact in order to store the whole structure ref.; however, if | |
497 | ;; it appears at the end of a symbol it should be discarded because it is | |
498 | ;; probably used as a period. | |
499 | ||
500 | ;; Here is the default completion syntax :: | |
501 | ;; Symbol chars :: A-Z a-z 0-9 @ / \ * + ~ $ < > % | |
502 | ;; Symbol chars to ignore at ends :: _ : . - | |
503 | ;; Separator chars. :: <tab> <space> ! ^ & ( ) = ` | { } [ ] ; " ' # | |
504 | ;; , ? <Everything else> | |
505 | ||
506 | ;; Mode specific differences and notes :: | |
507 | ;; LISP diffs -> | |
508 | ;; Symbol chars :: ! & ? = ^ | |
509 | ;; | |
510 | ;; C diffs -> | |
511 | ;; Separator chars :: + * / : % | |
512 | ;; A note on the hyphen (`-'). Perhaps the hyphen should also be a separator | |
513 | ;; char., however, we wanted to have completion symbols include pointer | |
514 | ;; references. For example, "foo->bar" is a symbol as far as completion is | |
515 | ;; concerned. | |
516 | ;; | |
517 | ;; FORTRAN diffs -> | |
518 | ;; Separator chars :: + - * / : | |
519 | ;; | |
520 | ;; Pathname diffs -> | |
521 | ;; Symbol chars :: . | |
522 | ;; Of course there is no pathname "mode" and in fact we have not implemented | |
523 | ;; this table. However, if there was such a mode, this is what it would look | |
524 | ;; like. | |
525 | ||
526 | ;;----------------------------------------------- | |
527 | ;; Table definitions | |
528 | ;;----------------------------------------------- | |
59ca07b5 | 529 | |
a7a2b1f6 | 530 | (defun cmpl-make-standard-completion-syntax-table () |
32168d16 | 531 | (let ((table (make-syntax-table)) ;; default syntax is whitespace |
136f8f67 | 532 | i) |
59ca07b5 | 533 | ;; alpha chars |
136f8f67 RS |
534 | (setq i 0) |
535 | (while (< i 26) | |
59ca07b5 | 536 | (modify-syntax-entry (+ ?a i) "_" table) |
136f8f67 RS |
537 | (modify-syntax-entry (+ ?A i) "_" table) |
538 | (setq i (1+ i))) | |
59ca07b5 | 539 | ;; digit chars. |
136f8f67 RS |
540 | (setq i 0) |
541 | (while (< i 10) | |
542 | (modify-syntax-entry (+ ?0 i) "_" table) | |
543 | (setq i (1+ i))) | |
59ca07b5 RS |
544 | ;; Other ones |
545 | (let ((symbol-chars '(?@ ?/ ?\\ ?* ?+ ?~ ?$ ?< ?> ?%)) | |
546 | (symbol-chars-ignore '(?_ ?- ?: ?.)) | |
547 | ) | |
136f8f67 | 548 | (completion-dolist (char symbol-chars) |
59ca07b5 | 549 | (modify-syntax-entry char "_" table)) |
136f8f67 | 550 | (completion-dolist (char symbol-chars-ignore) |
59ca07b5 RS |
551 | (modify-syntax-entry char "w" table) |
552 | ) | |
553 | ) | |
554 | table)) | |
555 | ||
a7a2b1f6 | 556 | (defconst cmpl-standard-syntax-table (cmpl-make-standard-completion-syntax-table)) |
59ca07b5 | 557 | |
a7a2b1f6 | 558 | (defun cmpl-make-lisp-completion-syntax-table () |
59ca07b5 RS |
559 | (let ((table (copy-syntax-table cmpl-standard-syntax-table)) |
560 | (symbol-chars '(?! ?& ?? ?= ?^)) | |
561 | ) | |
136f8f67 | 562 | (completion-dolist (char symbol-chars) |
59ca07b5 RS |
563 | (modify-syntax-entry char "_" table)) |
564 | table)) | |
565 | ||
a7a2b1f6 | 566 | (defun cmpl-make-c-completion-syntax-table () |
59ca07b5 RS |
567 | (let ((table (copy-syntax-table cmpl-standard-syntax-table)) |
568 | (separator-chars '(?+ ?* ?/ ?: ?%)) | |
569 | ) | |
136f8f67 | 570 | (completion-dolist (char separator-chars) |
59ca07b5 RS |
571 | (modify-syntax-entry char " " table)) |
572 | table)) | |
573 | ||
a7a2b1f6 | 574 | (defun cmpl-make-fortran-completion-syntax-table () |
59ca07b5 RS |
575 | (let ((table (copy-syntax-table cmpl-standard-syntax-table)) |
576 | (separator-chars '(?+ ?- ?* ?/ ?:)) | |
577 | ) | |
136f8f67 | 578 | (completion-dolist (char separator-chars) |
59ca07b5 RS |
579 | (modify-syntax-entry char " " table)) |
580 | table)) | |
581 | ||
a7a2b1f6 RS |
582 | (defconst cmpl-lisp-syntax-table (cmpl-make-lisp-completion-syntax-table)) |
583 | (defconst cmpl-c-syntax-table (cmpl-make-c-completion-syntax-table)) | |
584 | (defconst cmpl-fortran-syntax-table (cmpl-make-fortran-completion-syntax-table)) | |
59ca07b5 RS |
585 | |
586 | (defvar cmpl-syntax-table cmpl-standard-syntax-table | |
587 | "This variable holds the current completion syntax table.") | |
588 | (make-variable-buffer-local 'cmpl-syntax-table) | |
589 | ||
b578f267 EN |
590 | ;;----------------------------------------------- |
591 | ;; Installing the appropriate mode tables | |
592 | ;;----------------------------------------------- | |
59ca07b5 | 593 | |
a7a2b1f6 RS |
594 | (add-hook 'lisp-mode-hook |
595 | '(lambda () | |
596 | (setq cmpl-syntax-table cmpl-lisp-syntax-table))) | |
59ca07b5 | 597 | |
a7a2b1f6 RS |
598 | (add-hook 'c-mode-hook |
599 | '(lambda () | |
600 | (setq cmpl-syntax-table cmpl-c-syntax-table))) | |
59ca07b5 | 601 | |
a7a2b1f6 RS |
602 | (add-hook 'fortran-mode-hook |
603 | '(lambda () | |
604 | (setq cmpl-syntax-table cmpl-fortran-syntax-table) | |
605 | (completion-setup-fortran-mode))) | |
59ca07b5 | 606 | |
b578f267 EN |
607 | ;;----------------------------------------------- |
608 | ;; Symbol functions | |
609 | ;;----------------------------------------------- | |
59ca07b5 | 610 | (defvar cmpl-symbol-start nil |
a7a2b1f6 | 611 | "Holds first character of symbol, after any completion symbol function.") |
59ca07b5 | 612 | (defvar cmpl-symbol-end nil |
a7a2b1f6 | 613 | "Holds last character of symbol, after any completion symbol function.") |
b578f267 EN |
614 | ;; These are temp. vars. we use to avoid using let. |
615 | ;; Why ? Small speed improvement. | |
59ca07b5 RS |
616 | (defvar cmpl-saved-syntax nil) |
617 | (defvar cmpl-saved-point nil) | |
618 | ||
619 | (defun symbol-under-point () | |
a7a2b1f6 RS |
620 | "Returns the symbol that the point is currently on. |
621 | But only if it is longer than `completion-min-length'." | |
59ca07b5 | 622 | (setq cmpl-saved-syntax (syntax-table)) |
6f71c5cd KH |
623 | (unwind-protect |
624 | (progn | |
625 | (set-syntax-table cmpl-syntax-table) | |
626 | (cond | |
627 | ;; Cursor is on following-char and after preceding-char | |
628 | ((memq (char-syntax (following-char)) '(?w ?_)) | |
629 | (setq cmpl-saved-point (point) | |
630 | cmpl-symbol-start (scan-sexps (1+ cmpl-saved-point) -1) | |
631 | cmpl-symbol-end (scan-sexps cmpl-saved-point 1)) | |
632 | ;; Remove chars to ignore at the start. | |
633 | (cond ((= (char-syntax (char-after cmpl-symbol-start)) ?w) | |
634 | (goto-char cmpl-symbol-start) | |
635 | (forward-word 1) | |
636 | (setq cmpl-symbol-start (point)) | |
637 | (goto-char cmpl-saved-point) | |
638 | )) | |
639 | ;; Remove chars to ignore at the end. | |
640 | (cond ((= (char-syntax (char-after (1- cmpl-symbol-end))) ?w) | |
641 | (goto-char cmpl-symbol-end) | |
642 | (forward-word -1) | |
643 | (setq cmpl-symbol-end (point)) | |
644 | (goto-char cmpl-saved-point) | |
645 | )) | |
646 | ;; Return completion if the length is reasonable. | |
647 | (if (and (<= (cmpl-read-time-eval completion-min-length) | |
648 | (- cmpl-symbol-end cmpl-symbol-start)) | |
649 | (<= (- cmpl-symbol-end cmpl-symbol-start) | |
650 | (cmpl-read-time-eval completion-max-length))) | |
651 | (buffer-substring cmpl-symbol-start cmpl-symbol-end))))) | |
652 | (set-syntax-table cmpl-saved-syntax))) | |
59ca07b5 | 653 | |
b578f267 EN |
654 | ;; tests for symbol-under-point |
655 | ;; `^' indicates cursor pos. where value is returned | |
656 | ;; simple-word-test | |
657 | ;; ^^^^^^^^^^^^^^^^ --> simple-word-test | |
658 | ;; _harder_word_test_ | |
659 | ;; ^^^^^^^^^^^^^^^^^^ --> harder_word_test | |
660 | ;; .___.______. | |
661 | ;; --> nil | |
662 | ;; /foo/bar/quux.hello | |
663 | ;; ^^^^^^^^^^^^^^^^^^^ --> /foo/bar/quux.hello | |
664 | ;; | |
59ca07b5 RS |
665 | |
666 | (defun symbol-before-point () | |
a7a2b1f6 RS |
667 | "Returns a string of the symbol immediately before point. |
668 | Returns nil if there isn't one longer than `completion-min-length'." | |
59ca07b5 RS |
669 | ;; This is called when a word separator is typed so it must be FAST ! |
670 | (setq cmpl-saved-syntax (syntax-table)) | |
6f71c5cd KH |
671 | (unwind-protect |
672 | (progn | |
673 | (set-syntax-table cmpl-syntax-table) | |
674 | ;; Cursor is on following-char and after preceding-char | |
675 | (cond ((= (setq cmpl-preceding-syntax (char-syntax (preceding-char))) ?_) | |
676 | ;; Number of chars to ignore at end. | |
677 | (setq cmpl-symbol-end (point) | |
678 | cmpl-symbol-start (scan-sexps cmpl-symbol-end -1) | |
679 | ) | |
680 | ;; Remove chars to ignore at the start. | |
681 | (cond ((= (char-syntax (char-after cmpl-symbol-start)) ?w) | |
682 | (goto-char cmpl-symbol-start) | |
683 | (forward-word 1) | |
684 | (setq cmpl-symbol-start (point)) | |
685 | (goto-char cmpl-symbol-end) | |
686 | )) | |
687 | ;; Return value if long enough. | |
688 | (if (>= cmpl-symbol-end | |
689 | (+ cmpl-symbol-start | |
690 | (cmpl-read-time-eval completion-min-length))) | |
691 | (buffer-substring cmpl-symbol-start cmpl-symbol-end)) | |
59ca07b5 | 692 | ) |
6f71c5cd KH |
693 | ((= cmpl-preceding-syntax ?w) |
694 | ;; chars to ignore at end | |
695 | (setq cmpl-saved-point (point) | |
696 | cmpl-symbol-start (scan-sexps cmpl-saved-point -1)) | |
697 | ;; take off chars. from end | |
698 | (forward-word -1) | |
699 | (setq cmpl-symbol-end (point)) | |
700 | ;; remove chars to ignore at the start | |
701 | (cond ((= (char-syntax (char-after cmpl-symbol-start)) ?w) | |
702 | (goto-char cmpl-symbol-start) | |
703 | (forward-word 1) | |
704 | (setq cmpl-symbol-start (point)) | |
705 | )) | |
706 | ;; Restore state. | |
707 | (goto-char cmpl-saved-point) | |
708 | ;; Return completion if the length is reasonable | |
709 | (if (and (<= (cmpl-read-time-eval completion-min-length) | |
710 | (- cmpl-symbol-end cmpl-symbol-start)) | |
711 | (<= (- cmpl-symbol-end cmpl-symbol-start) | |
712 | (cmpl-read-time-eval completion-max-length))) | |
713 | (buffer-substring cmpl-symbol-start cmpl-symbol-end))))) | |
714 | (set-syntax-table cmpl-saved-syntax))) | |
59ca07b5 | 715 | |
b578f267 EN |
716 | ;; tests for symbol-before-point |
717 | ;; `^' indicates cursor pos. where value is returned | |
718 | ;; simple-word-test | |
719 | ;; ^ --> nil | |
720 | ;; ^ --> nil | |
721 | ;; ^ --> simple-w | |
722 | ;; ^ --> simple-word-test | |
723 | ;; _harder_word_test_ | |
724 | ;; ^ --> harder_word_test | |
725 | ;; ^ --> harder_word_test | |
726 | ;; ^ --> harder | |
727 | ;; .___.... | |
728 | ;; --> nil | |
59ca07b5 RS |
729 | |
730 | (defun symbol-under-or-before-point () | |
b578f267 EN |
731 | ;; This could be made slightly faster but it is better to avoid |
732 | ;; copying all the code. | |
733 | ;; However, it is only used by the completion string prompter. | |
734 | ;; If it comes into common use, it could be rewritten. | |
6f71c5cd KH |
735 | (cond ((memq (progn |
736 | (setq cmpl-saved-syntax (syntax-table)) | |
737 | (unwind-protect | |
738 | (progn | |
739 | (set-syntax-table cmpl-syntax-table) | |
740 | (char-syntax (following-char))) | |
741 | (set-syntax-table cmpl-saved-syntax))) | |
742 | '(?w ?_)) | |
59ca07b5 RS |
743 | (symbol-under-point)) |
744 | (t | |
6f71c5cd | 745 | (symbol-before-point)))) |
59ca07b5 RS |
746 | |
747 | ||
748 | (defun symbol-before-point-for-complete () | |
749 | ;; "Returns a string of the symbol immediately before point | |
750 | ;; or nil if there isn't one. Like symbol-before-point but doesn't trim the | |
751 | ;; end chars." | |
752 | ;; Cursor is on following-char and after preceding-char | |
753 | (setq cmpl-saved-syntax (syntax-table)) | |
6f71c5cd KH |
754 | (unwind-protect |
755 | (progn | |
756 | (set-syntax-table cmpl-syntax-table) | |
757 | (cond ((memq (setq cmpl-preceding-syntax (char-syntax (preceding-char))) | |
758 | '(?_ ?w)) | |
759 | (setq cmpl-symbol-end (point) | |
760 | cmpl-symbol-start (scan-sexps cmpl-symbol-end -1) | |
761 | ) | |
762 | ;; Remove chars to ignore at the start. | |
763 | (cond ((= (char-syntax (char-after cmpl-symbol-start)) ?w) | |
764 | (goto-char cmpl-symbol-start) | |
765 | (forward-word 1) | |
766 | (setq cmpl-symbol-start (point)) | |
767 | (goto-char cmpl-symbol-end) | |
768 | )) | |
769 | ;; Return completion if the length is reasonable. | |
770 | (if (and (<= (cmpl-read-time-eval | |
771 | completion-prefix-min-length) | |
772 | (- cmpl-symbol-end cmpl-symbol-start)) | |
773 | (<= (- cmpl-symbol-end cmpl-symbol-start) | |
774 | (cmpl-read-time-eval completion-max-length))) | |
775 | (buffer-substring cmpl-symbol-start cmpl-symbol-end))))) | |
776 | ;; Restore syntax table. | |
777 | (set-syntax-table cmpl-saved-syntax))) | |
59ca07b5 | 778 | |
b578f267 EN |
779 | ;; tests for symbol-before-point-for-complete |
780 | ;; `^' indicates cursor pos. where value is returned | |
781 | ;; simple-word-test | |
782 | ;; ^ --> nil | |
783 | ;; ^ --> nil | |
784 | ;; ^ --> simple-w | |
785 | ;; ^ --> simple-word-test | |
786 | ;; _harder_word_test_ | |
787 | ;; ^ --> harder_word_test | |
788 | ;; ^ --> harder_word_test_ | |
789 | ;; ^ --> harder_ | |
790 | ;; .___.... | |
791 | ;; --> nil | |
59ca07b5 RS |
792 | |
793 | ||
794 | \f | |
b578f267 EN |
795 | ;;--------------------------------------------------------------------------- |
796 | ;; Statistics Recording | |
797 | ;;--------------------------------------------------------------------------- | |
59ca07b5 | 798 | |
b578f267 EN |
799 | ;; Note that the guts of this has been turned off. The guts |
800 | ;; are in completion-stats.el. | |
59ca07b5 | 801 | |
b578f267 EN |
802 | ;;----------------------------------------------- |
803 | ;; Conditionalizing code on *record-cmpl-statistics-p* | |
804 | ;;----------------------------------------------- | |
805 | ;; All statistics code outside this block should use this | |
a7a2b1f6 | 806 | (defmacro cmpl-statistics-block (&rest body)) |
b578f267 EN |
807 | ;; "Only executes body if we are recording statistics." |
808 | ;; (list 'cond | |
809 | ;; (list* '*record-cmpl-statistics-p* body) | |
810 | ;; )) | |
59ca07b5 | 811 | |
b578f267 EN |
812 | ;;----------------------------------------------- |
813 | ;; Completion Sources | |
814 | ;;----------------------------------------------- | |
59ca07b5 RS |
815 | |
816 | ;; ID numbers | |
817 | (defconst cmpl-source-unknown 0) | |
818 | (defconst cmpl-source-init-file 1) | |
819 | (defconst cmpl-source-file-parsing 2) | |
820 | (defconst cmpl-source-separator 3) | |
821 | (defconst cmpl-source-cursor-moves 4) | |
822 | (defconst cmpl-source-interactive 5) | |
823 | (defconst cmpl-source-cdabbrev 6) | |
824 | (defconst num-cmpl-sources 7) | |
825 | (defvar current-completion-source cmpl-source-unknown) | |
826 | ||
827 | ||
828 | \f | |
b578f267 EN |
829 | ;;--------------------------------------------------------------------------- |
830 | ;; Completion Method #2: dabbrev-expand style | |
831 | ;;--------------------------------------------------------------------------- | |
832 | ;; | |
833 | ;; This method is used if there are no useful stored completions. It is | |
834 | ;; based on dabbrev-expand with these differences : | |
835 | ;; 1) Faster (we don't use regexps) | |
836 | ;; 2) case coercion handled correctly | |
837 | ;; This is called cdabbrev to differentiate it. | |
838 | ;; We simply search backwards through the file looking for words which | |
839 | ;; start with the same letters we are trying to complete. | |
840 | ;; | |
59ca07b5 RS |
841 | |
842 | (defvar cdabbrev-completions-tried nil) | |
b578f267 | 843 | ;; "A list of all the cdabbrev completions since the last reset.") |
59ca07b5 RS |
844 | |
845 | (defvar cdabbrev-current-point 0) | |
b578f267 | 846 | ;; "The current point position the cdabbrev search is at.") |
59ca07b5 RS |
847 | |
848 | (defvar cdabbrev-current-window nil) | |
b578f267 EN |
849 | ;; "The current window we are looking for cdabbrevs in. T if looking in |
850 | ;; (other-buffer), NIL if no more cdabbrevs.") | |
59ca07b5 RS |
851 | |
852 | (defvar cdabbrev-wrapped-p nil) | |
b578f267 | 853 | ;; "T if the cdabbrev search has wrapped around the file.") |
59ca07b5 RS |
854 | |
855 | (defvar cdabbrev-abbrev-string "") | |
856 | (defvar cdabbrev-start-point 0) | |
136f8f67 | 857 | (defvar cdabbrev-stop-point) |
59ca07b5 | 858 | |
b578f267 EN |
859 | ;; Test strings for cdabbrev |
860 | ;; cdat-upcase ;;same namestring | |
861 | ;; CDAT-UPCASE ;;ok | |
862 | ;; cdat2 ;;too short | |
863 | ;; cdat-1-2-3-4 ;;ok | |
864 | ;; a-cdat-1 ;;doesn't start correctly | |
865 | ;; cdat-simple ;;ok | |
59ca07b5 RS |
866 | |
867 | ||
868 | (defun reset-cdabbrev (abbrev-string &optional initial-completions-tried) | |
869 | "Resets the cdabbrev search to search for abbrev-string. | |
a7a2b1f6 | 870 | INITIAL-COMPLETIONS-TRIED is a list of downcased strings to ignore |
59ca07b5 RS |
871 | during the search." |
872 | (setq cdabbrev-abbrev-string abbrev-string | |
873 | cdabbrev-completions-tried | |
874 | (cons (downcase abbrev-string) initial-completions-tried) | |
875 | ) | |
876 | (reset-cdabbrev-window t) | |
877 | ) | |
878 | ||
879 | (defun set-cdabbrev-buffer () | |
880 | ;; cdabbrev-current-window must not be NIL | |
881 | (set-buffer (if (eq cdabbrev-current-window t) | |
882 | (other-buffer) | |
883 | (window-buffer cdabbrev-current-window))) | |
884 | ) | |
885 | ||
886 | ||
887 | (defun reset-cdabbrev-window (&optional initializep) | |
a7a2b1f6 | 888 | "Resets the cdabbrev search to search for abbrev-string." |
59ca07b5 RS |
889 | ;; Set the window |
890 | (cond (initializep | |
891 | (setq cdabbrev-current-window (selected-window)) | |
892 | ) | |
893 | ((eq cdabbrev-current-window t) | |
894 | ;; Everything has failed | |
895 | (setq cdabbrev-current-window nil)) | |
896 | (cdabbrev-current-window | |
897 | (setq cdabbrev-current-window (next-window cdabbrev-current-window)) | |
898 | (if (eq cdabbrev-current-window (selected-window)) | |
899 | ;; No more windows, try other buffer. | |
900 | (setq cdabbrev-current-window t))) | |
901 | ) | |
136f8f67 RS |
902 | (if cdabbrev-current-window |
903 | (save-excursion | |
904 | (set-cdabbrev-buffer) | |
905 | (setq cdabbrev-current-point (point) | |
906 | cdabbrev-start-point cdabbrev-current-point | |
907 | cdabbrev-stop-point | |
908 | (if completion-search-distance | |
909 | (max (point-min) | |
910 | (- cdabbrev-start-point completion-search-distance)) | |
911 | (point-min)) | |
912 | cdabbrev-wrapped-p nil) | |
913 | ))) | |
59ca07b5 RS |
914 | |
915 | (defun next-cdabbrev () | |
916 | "Return the next possible cdabbrev expansion or nil if there isn't one. | |
a7a2b1f6 RS |
917 | `reset-cdabbrev' must've been called already. |
918 | This is sensitive to `case-fold-search'." | |
59ca07b5 RS |
919 | ;; note that case-fold-search affects the behavior of this function |
920 | ;; Bug: won't pick up an expansion that starts at the top of buffer | |
136f8f67 RS |
921 | (if cdabbrev-current-window |
922 | (let (saved-point | |
923 | saved-syntax | |
924 | (expansion nil) | |
925 | downcase-expansion tried-list syntax saved-point-2) | |
926 | (save-excursion | |
927 | (unwind-protect | |
928 | (progn | |
929 | ;; Switch to current completion buffer | |
930 | (set-cdabbrev-buffer) | |
931 | ;; Save current buffer state | |
932 | (setq saved-point (point) | |
933 | saved-syntax (syntax-table)) | |
934 | ;; Restore completion state | |
935 | (set-syntax-table cmpl-syntax-table) | |
936 | (goto-char cdabbrev-current-point) | |
937 | ;; Loop looking for completions | |
938 | (while | |
939 | ;; This code returns t if it should loop again | |
940 | (cond | |
941 | (;; search for the string | |
942 | (search-backward cdabbrev-abbrev-string cdabbrev-stop-point t) | |
943 | ;; return nil if the completion is valid | |
944 | (not | |
945 | (and | |
946 | ;; does it start with a separator char ? | |
947 | (or (= (setq syntax (char-syntax (preceding-char))) ? ) | |
948 | (and (= syntax ?w) | |
949 | ;; symbol char to ignore at end. Are we at end ? | |
950 | (progn | |
951 | (setq saved-point-2 (point)) | |
952 | (forward-word -1) | |
953 | (prog1 | |
954 | (= (char-syntax (preceding-char)) ? ) | |
955 | (goto-char saved-point-2) | |
956 | )))) | |
957 | ;; is the symbol long enough ? | |
958 | (setq expansion (symbol-under-point)) | |
959 | ;; have we not tried this one before | |
960 | (progn | |
961 | ;; See if we've already used it | |
962 | (setq tried-list cdabbrev-completions-tried | |
963 | downcase-expansion (downcase expansion)) | |
964 | (while (and tried-list | |
965 | (not (string-equal downcase-expansion | |
966 | (car tried-list)))) | |
967 | ;; Already tried, don't choose this one | |
968 | (setq tried-list (cdr tried-list)) | |
969 | ) | |
970 | ;; at this point tried-list will be nil if this | |
971 | ;; expansion has not yet been tried | |
972 | (if tried-list | |
973 | (setq expansion nil) | |
974 | t) | |
975 | )))) | |
976 | ;; search failed | |
977 | (cdabbrev-wrapped-p | |
978 | ;; If already wrapped, then we've failed completely | |
979 | nil) | |
980 | (t | |
981 | ;; need to wrap | |
982 | (goto-char (setq cdabbrev-current-point | |
983 | (if completion-search-distance | |
984 | (min (point-max) (+ cdabbrev-start-point completion-search-distance)) | |
985 | (point-max)))) | |
986 | ||
987 | (setq cdabbrev-wrapped-p t)) | |
988 | )) | |
989 | ;; end of while loop | |
990 | (cond (expansion | |
991 | ;; successful | |
992 | (setq cdabbrev-completions-tried | |
993 | (cons downcase-expansion cdabbrev-completions-tried) | |
994 | cdabbrev-current-point (point)))) | |
995 | ) | |
996 | (set-syntax-table saved-syntax) | |
997 | (goto-char saved-point) | |
998 | )) | |
999 | ;; If no expansion, go to next window | |
1000 | (cond (expansion) | |
1001 | (t (reset-cdabbrev-window) | |
1002 | (next-cdabbrev)))))) | |
59ca07b5 | 1003 | |
b578f267 EN |
1004 | ;; The following must be eval'd in the minibuffer :: |
1005 | ;; (reset-cdabbrev "cdat") | |
1006 | ;; (next-cdabbrev) --> "cdat-simple" | |
1007 | ;; (next-cdabbrev) --> "cdat-1-2-3-4" | |
1008 | ;; (next-cdabbrev) --> "CDAT-UPCASE" | |
1009 | ;; (next-cdabbrev) --> "cdat-wrapping" | |
1010 | ;; (next-cdabbrev) --> "cdat_start_sym" | |
1011 | ;; (next-cdabbrev) --> nil | |
1012 | ;; (next-cdabbrev) --> nil | |
1013 | ;; (next-cdabbrev) --> nil | |
59ca07b5 | 1014 | |
b578f267 EN |
1015 | ;; _cdat_start_sym |
1016 | ;; cdat-wrapping | |
59ca07b5 RS |
1017 | |
1018 | \f | |
b578f267 EN |
1019 | ;;--------------------------------------------------------------------------- |
1020 | ;; Completion Database | |
1021 | ;;--------------------------------------------------------------------------- | |
1022 | ||
1023 | ;; We use two storage modes for the two search types :: | |
1024 | ;; 1) Prefix {cmpl-prefix-obarray} for looking up possible completions | |
1025 | ;; Used by search-completion-next | |
1026 | ;; the value of the symbol is nil or a cons of head and tail pointers | |
1027 | ;; 2) Interning {cmpl-obarray} to see if it's in the database | |
1028 | ;; Used by find-exact-completion, completion-in-database-p | |
1029 | ;; The value of the symbol is the completion entry | |
1030 | ||
1031 | ;; bad things may happen if this length is changed due to the way | |
1032 | ;; GNU implements obarrays | |
59ca07b5 RS |
1033 | (defconst cmpl-obarray-length 511) |
1034 | ||
1035 | (defvar cmpl-prefix-obarray (make-vector cmpl-obarray-length 0) | |
eb8c3be9 | 1036 | "An obarray used to store the downcased completion prefixes. |
59ca07b5 RS |
1037 | Each symbol is bound to a list of completion entries.") |
1038 | ||
1039 | (defvar cmpl-obarray (make-vector cmpl-obarray-length 0) | |
1040 | "An obarray used to store the downcased completions. | |
1041 | Each symbol is bound to a single completion entry.") | |
1042 | ||
b578f267 EN |
1043 | ;;----------------------------------------------- |
1044 | ;; Completion Entry Structure Definition | |
1045 | ;;----------------------------------------------- | |
59ca07b5 | 1046 | |
b578f267 EN |
1047 | ;; A completion entry is a LIST of string, prefix-symbol num-uses, and |
1048 | ;; last-use-time (the time the completion was last used) | |
1049 | ;; last-use-time is T if the string should be kept permanently | |
1050 | ;; num-uses is incremented every time the completion is used. | |
59ca07b5 | 1051 | |
b578f267 EN |
1052 | ;; We chose lists because (car foo) is faster than (aref foo 0) and the |
1053 | ;; creation time is about the same. | |
59ca07b5 | 1054 | |
b578f267 | 1055 | ;; READER MACROS |
59ca07b5 RS |
1056 | |
1057 | (defmacro completion-string (completion-entry) | |
1058 | (list 'car completion-entry)) | |
1059 | ||
1060 | (defmacro completion-num-uses (completion-entry) | |
1061 | ;; "The number of times it has used. Used to decide whether to save | |
1062 | ;; it." | |
1063 | (list 'car (list 'cdr completion-entry))) | |
1064 | ||
1065 | (defmacro completion-last-use-time (completion-entry) | |
a7a2b1f6 | 1066 | ;; "The time it was last used. In hours since origin. Used to decide |
59ca07b5 RS |
1067 | ;; whether to save it. T if one should always save it." |
1068 | (list 'nth 2 completion-entry)) | |
1069 | ||
1070 | (defmacro completion-source (completion-entry) | |
1071 | (list 'nth 3 completion-entry)) | |
1072 | ||
b578f267 | 1073 | ;; WRITER MACROS |
59ca07b5 RS |
1074 | (defmacro set-completion-string (completion-entry string) |
1075 | (list 'setcar completion-entry string)) | |
1076 | ||
1077 | (defmacro set-completion-num-uses (completion-entry num-uses) | |
1078 | (list 'setcar (list 'cdr completion-entry) num-uses)) | |
1079 | ||
1080 | (defmacro set-completion-last-use-time (completion-entry last-use-time) | |
1081 | (list 'setcar (list 'cdr (list 'cdr completion-entry)) last-use-time)) | |
1082 | ||
b578f267 | 1083 | ;; CONSTRUCTOR |
59ca07b5 RS |
1084 | (defun make-completion (string) |
1085 | "Returns a list of a completion entry." | |
1086 | (list (list string 0 nil current-completion-source))) | |
1087 | ||
1088 | ;; Obsolete | |
1089 | ;;(defmacro cmpl-prefix-entry-symbol (completion-entry) | |
1090 | ;; (list 'car (list 'cdr completion-entry))) | |
1091 | ||
1092 | ||
1093 | \f | |
b578f267 EN |
1094 | ;;----------------------------------------------- |
1095 | ;; Prefix symbol entry definition | |
1096 | ;;----------------------------------------------- | |
1097 | ;; A cons of (head . tail) | |
59ca07b5 | 1098 | |
b578f267 | 1099 | ;; READER Macros |
59ca07b5 RS |
1100 | |
1101 | (defmacro cmpl-prefix-entry-head (prefix-entry) | |
1102 | (list 'car prefix-entry)) | |
1103 | ||
1104 | (defmacro cmpl-prefix-entry-tail (prefix-entry) | |
1105 | (list 'cdr prefix-entry)) | |
1106 | ||
b578f267 | 1107 | ;; WRITER Macros |
59ca07b5 RS |
1108 | |
1109 | (defmacro set-cmpl-prefix-entry-head (prefix-entry new-head) | |
1110 | (list 'setcar prefix-entry new-head)) | |
1111 | ||
1112 | (defmacro set-cmpl-prefix-entry-tail (prefix-entry new-tail) | |
1113 | (list 'setcdr prefix-entry new-tail)) | |
1114 | ||
b578f267 | 1115 | ;; Constructor |
59ca07b5 RS |
1116 | |
1117 | (defun make-cmpl-prefix-entry (completion-entry-list) | |
1118 | "Makes a new prefix entry containing only completion-entry." | |
1119 | (cons completion-entry-list completion-entry-list)) | |
1120 | ||
b578f267 EN |
1121 | ;;----------------------------------------------- |
1122 | ;; Completion Database - Utilities | |
1123 | ;;----------------------------------------------- | |
59ca07b5 RS |
1124 | |
1125 | (defun clear-all-completions () | |
1126 | "Initializes the completion storage. All existing completions are lost." | |
1127 | (interactive) | |
1128 | (setq cmpl-prefix-obarray (make-vector cmpl-obarray-length 0)) | |
1129 | (setq cmpl-obarray (make-vector cmpl-obarray-length 0)) | |
1130 | (cmpl-statistics-block | |
1131 | (record-clear-all-completions)) | |
1132 | ) | |
1133 | ||
136f8f67 RS |
1134 | (defvar completions-list-return-value) |
1135 | ||
59ca07b5 RS |
1136 | (defun list-all-completions () |
1137 | "Returns a list of all the known completion entries." | |
136f8f67 | 1138 | (let ((completions-list-return-value nil)) |
59ca07b5 | 1139 | (mapatoms 'list-all-completions-1 cmpl-prefix-obarray) |
136f8f67 | 1140 | completions-list-return-value)) |
59ca07b5 RS |
1141 | |
1142 | (defun list-all-completions-1 (prefix-symbol) | |
1143 | (if (boundp prefix-symbol) | |
136f8f67 | 1144 | (setq completions-list-return-value |
59ca07b5 | 1145 | (append (cmpl-prefix-entry-head (symbol-value prefix-symbol)) |
136f8f67 | 1146 | completions-list-return-value)))) |
59ca07b5 RS |
1147 | |
1148 | (defun list-all-completions-by-hash-bucket () | |
a7a2b1f6 | 1149 | "Return list of lists of known completion entries, organized by hash bucket." |
136f8f67 | 1150 | (let ((completions-list-return-value nil)) |
59ca07b5 | 1151 | (mapatoms 'list-all-completions-by-hash-bucket-1 cmpl-prefix-obarray) |
136f8f67 | 1152 | completions-list-return-value)) |
59ca07b5 RS |
1153 | |
1154 | (defun list-all-completions-by-hash-bucket-1 (prefix-symbol) | |
1155 | (if (boundp prefix-symbol) | |
136f8f67 | 1156 | (setq completions-list-return-value |
59ca07b5 | 1157 | (cons (cmpl-prefix-entry-head (symbol-value prefix-symbol)) |
136f8f67 | 1158 | completions-list-return-value)))) |
59ca07b5 RS |
1159 | |
1160 | \f | |
b578f267 EN |
1161 | ;;----------------------------------------------- |
1162 | ;; Updating the database | |
1163 | ;;----------------------------------------------- | |
1164 | ;; | |
1165 | ;; These are the internal functions used to update the datebase | |
1166 | ;; | |
1167 | ;; | |
59ca07b5 RS |
1168 | (defvar completion-to-accept nil) |
1169 | ;;"Set to a string that is pending its acceptance." | |
1170 | ;; this checked by the top level reading functions | |
1171 | ||
1172 | (defvar cmpl-db-downcase-string nil) | |
1173 | ;; "Setup by find-exact-completion, etc. The given string, downcased." | |
1174 | (defvar cmpl-db-symbol nil) | |
1175 | ;; "The interned symbol corresponding to cmpl-db-downcase-string. | |
1176 | ;; Set up by cmpl-db-symbol." | |
1177 | (defvar cmpl-db-prefix-symbol nil) | |
1178 | ;; "The interned prefix symbol corresponding to cmpl-db-downcase-string." | |
1179 | (defvar cmpl-db-entry nil) | |
1180 | (defvar cmpl-db-debug-p nil | |
1181 | "Set to T if you want to debug the database.") | |
1182 | ||
b578f267 | 1183 | ;; READS |
59ca07b5 RS |
1184 | (defun find-exact-completion (string) |
1185 | "Returns the completion entry for string or nil. | |
a7a2b1f6 | 1186 | Sets up `cmpl-db-downcase-string' and `cmpl-db-symbol'." |
59ca07b5 RS |
1187 | (and (boundp (setq cmpl-db-symbol |
1188 | (intern (setq cmpl-db-downcase-string (downcase string)) | |
1189 | cmpl-obarray))) | |
1190 | (symbol-value cmpl-db-symbol) | |
1191 | )) | |
1192 | ||
1193 | (defun find-cmpl-prefix-entry (prefix-string) | |
c2ced5d8 | 1194 | "Returns the prefix entry for string. |
a7a2b1f6 RS |
1195 | Sets `cmpl-db-prefix-symbol'. |
1196 | Prefix-string must be exactly `completion-prefix-min-length' long | |
1197 | and downcased. Sets up `cmpl-db-prefix-symbol'." | |
59ca07b5 RS |
1198 | (and (boundp (setq cmpl-db-prefix-symbol |
1199 | (intern prefix-string cmpl-prefix-obarray))) | |
1200 | (symbol-value cmpl-db-prefix-symbol))) | |
1201 | ||
1202 | (defvar inside-locate-completion-entry nil) | |
1203 | ;; used to trap lossage in silent error correction | |
1204 | ||
1205 | (defun locate-completion-entry (completion-entry prefix-entry) | |
c2ced5d8 CZ |
1206 | "Locates the completion entry. |
1207 | Returns a pointer to the element before the completion entry or nil if | |
1208 | the completion entry is at the head. | |
a7a2b1f6 | 1209 | Must be called after `find-exact-completion'." |
59ca07b5 RS |
1210 | (let ((prefix-list (cmpl-prefix-entry-head prefix-entry)) |
1211 | next-prefix-list | |
1212 | ) | |
1213 | (cond | |
1214 | ((not (eq (car prefix-list) completion-entry)) | |
1215 | ;; not already at head | |
1216 | (while (and prefix-list | |
1217 | (not (eq completion-entry | |
1218 | (car (setq next-prefix-list (cdr prefix-list))) | |
1219 | ))) | |
1220 | (setq prefix-list next-prefix-list)) | |
1221 | (cond (;; found | |
1222 | prefix-list) | |
1223 | ;; Didn't find it. Database is messed up. | |
1224 | (cmpl-db-debug-p | |
1225 | ;; not found, error if debug mode | |
1226 | (error "Completion entry exists but not on prefix list - %s" | |
136f8f67 | 1227 | completion-string)) |
59ca07b5 RS |
1228 | (inside-locate-completion-entry |
1229 | ;; recursive error: really scrod | |
1230 | (locate-completion-db-error)) | |
1231 | (t | |
1232 | ;; Patch out | |
1233 | (set cmpl-db-symbol nil) | |
1234 | ;; Retry | |
1235 | (locate-completion-entry-retry completion-entry) | |
1236 | )))))) | |
1237 | ||
1238 | (defun locate-completion-entry-retry (old-entry) | |
1239 | (let ((inside-locate-completion-entry t)) | |
1240 | (add-completion (completion-string old-entry) | |
1241 | (completion-num-uses old-entry) | |
1242 | (completion-last-use-time old-entry)) | |
136f8f67 RS |
1243 | (let* ((cmpl-entry (find-exact-completion (completion-string old-entry))) |
1244 | (pref-entry | |
1245 | (if cmpl-entry | |
1246 | (find-cmpl-prefix-entry | |
1247 | (substring cmpl-db-downcase-string | |
1248 | 0 completion-prefix-min-length)))) | |
59ca07b5 RS |
1249 | ) |
1250 | (if (and cmpl-entry pref-entry) | |
1251 | ;; try again | |
1252 | (locate-completion-entry cmpl-entry pref-entry) | |
1253 | ;; still losing | |
1254 | (locate-completion-db-error)) | |
1255 | ))) | |
1256 | ||
1257 | (defun locate-completion-db-error () | |
1258 | ;; recursive error: really scrod | |
1259 | (error "Completion database corrupted. Try M-x clear-all-completions. Send bug report.") | |
1260 | ) | |
1261 | ||
b578f267 | 1262 | ;; WRITES |
59ca07b5 | 1263 | (defun add-completion-to-tail-if-new (string) |
c2ced5d8 | 1264 | "If STRING is not in the database add it to appropriate prefix list. |
eb8c3be9 | 1265 | STRING is added to the end of the appropriate prefix list with |
c2ced5d8 | 1266 | num-uses = 0. The database is unchanged if it is there. STRING must be |
a7a2b1f6 | 1267 | longer than `completion-prefix-min-length'. |
59ca07b5 RS |
1268 | This must be very fast. |
1269 | Returns the completion entry." | |
1270 | (or (find-exact-completion string) | |
1271 | ;; not there | |
1272 | (let (;; create an entry | |
1273 | (entry (make-completion string)) | |
1274 | ;; setup the prefix | |
1275 | (prefix-entry (find-cmpl-prefix-entry | |
1276 | (substring cmpl-db-downcase-string 0 | |
a7a2b1f6 RS |
1277 | (cmpl-read-time-eval |
1278 | completion-prefix-min-length)))) | |
59ca07b5 RS |
1279 | ) |
1280 | ;; The next two forms should happen as a unit (atomically) but | |
1281 | ;; no fatal errors should result if that is not the case. | |
1282 | (cond (prefix-entry | |
1283 | ;; These two should be atomic, but nothing fatal will happen | |
1284 | ;; if they're not. | |
1285 | (setcdr (cmpl-prefix-entry-tail prefix-entry) entry) | |
1286 | (set-cmpl-prefix-entry-tail prefix-entry entry)) | |
1287 | (t | |
1288 | (set cmpl-db-prefix-symbol (make-cmpl-prefix-entry entry)) | |
1289 | )) | |
1290 | ;; statistics | |
1291 | (cmpl-statistics-block | |
1292 | (note-added-completion)) | |
1293 | ;; set symbol | |
1294 | (set cmpl-db-symbol (car entry)) | |
1295 | ))) | |
1296 | ||
136f8f67 RS |
1297 | (defun add-completion-to-head (completion-string) |
1298 | "If COMPLETION-STRING is not in the database, add it to prefix list. | |
1299 | We add COMPLETION-STRING to the head of the appropriate prefix list, | |
1300 | or it to the head of the list. | |
1301 | COMPLETION-STRING must be longer than `completion-prefix-min-length'. | |
59ca07b5 RS |
1302 | Updates the saved string with the supplied string. |
1303 | This must be very fast. | |
1304 | Returns the completion entry." | |
1305 | ;; Handle pending acceptance | |
1306 | (if completion-to-accept (accept-completion)) | |
1307 | ;; test if already in database | |
136f8f67 | 1308 | (if (setq cmpl-db-entry (find-exact-completion completion-string)) |
59ca07b5 RS |
1309 | ;; found |
1310 | (let* ((prefix-entry (find-cmpl-prefix-entry | |
1311 | (substring cmpl-db-downcase-string 0 | |
a7a2b1f6 RS |
1312 | (cmpl-read-time-eval |
1313 | completion-prefix-min-length)))) | |
59ca07b5 RS |
1314 | (splice-ptr (locate-completion-entry cmpl-db-entry prefix-entry)) |
1315 | (cmpl-ptr (cdr splice-ptr)) | |
1316 | ) | |
1317 | ;; update entry | |
136f8f67 | 1318 | (set-completion-string cmpl-db-entry completion-string) |
59ca07b5 RS |
1319 | ;; move to head (if necessary) |
1320 | (cond (splice-ptr | |
1321 | ;; These should all execute atomically but it is not fatal if | |
1322 | ;; they don't. | |
1323 | ;; splice it out | |
1324 | (or (setcdr splice-ptr (cdr cmpl-ptr)) | |
1325 | ;; fix up tail if necessary | |
1326 | (set-cmpl-prefix-entry-tail prefix-entry splice-ptr)) | |
1327 | ;; splice in at head | |
1328 | (setcdr cmpl-ptr (cmpl-prefix-entry-head prefix-entry)) | |
1329 | (set-cmpl-prefix-entry-head prefix-entry cmpl-ptr) | |
1330 | )) | |
1331 | cmpl-db-entry) | |
1332 | ;; not there | |
1333 | (let (;; create an entry | |
136f8f67 | 1334 | (entry (make-completion completion-string)) |
59ca07b5 RS |
1335 | ;; setup the prefix |
1336 | (prefix-entry (find-cmpl-prefix-entry | |
1337 | (substring cmpl-db-downcase-string 0 | |
a7a2b1f6 RS |
1338 | (cmpl-read-time-eval |
1339 | completion-prefix-min-length)))) | |
59ca07b5 RS |
1340 | ) |
1341 | (cond (prefix-entry | |
1342 | ;; Splice in at head | |
1343 | (setcdr entry (cmpl-prefix-entry-head prefix-entry)) | |
1344 | (set-cmpl-prefix-entry-head prefix-entry entry)) | |
1345 | (t | |
1346 | ;; Start new prefix entry | |
1347 | (set cmpl-db-prefix-symbol (make-cmpl-prefix-entry entry)) | |
1348 | )) | |
1349 | ;; statistics | |
1350 | (cmpl-statistics-block | |
1351 | (note-added-completion)) | |
1352 | ;; Add it to the symbol | |
1353 | (set cmpl-db-symbol (car entry)) | |
1354 | ))) | |
1355 | ||
136f8f67 | 1356 | (defun delete-completion (completion-string) |
c2ced5d8 | 1357 | "Deletes the completion from the database. |
a7a2b1f6 | 1358 | String must be longer than `completion-prefix-min-length'." |
59ca07b5 RS |
1359 | ;; Handle pending acceptance |
1360 | (if completion-to-accept (accept-completion)) | |
136f8f67 | 1361 | (if (setq cmpl-db-entry (find-exact-completion completion-string)) |
59ca07b5 RS |
1362 | ;; found |
1363 | (let* ((prefix-entry (find-cmpl-prefix-entry | |
1364 | (substring cmpl-db-downcase-string 0 | |
a7a2b1f6 RS |
1365 | (cmpl-read-time-eval |
1366 | completion-prefix-min-length)))) | |
59ca07b5 RS |
1367 | (splice-ptr (locate-completion-entry cmpl-db-entry prefix-entry)) |
1368 | ) | |
1369 | ;; delete symbol reference | |
1370 | (set cmpl-db-symbol nil) | |
1371 | ;; remove from prefix list | |
1372 | (cond (splice-ptr | |
1373 | ;; not at head | |
1374 | (or (setcdr splice-ptr (cdr (cdr splice-ptr))) | |
1375 | ;; fix up tail if necessary | |
1376 | (set-cmpl-prefix-entry-tail prefix-entry splice-ptr)) | |
1377 | ) | |
1378 | (t | |
1379 | ;; at head | |
1380 | (or (set-cmpl-prefix-entry-head | |
1381 | prefix-entry (cdr (cmpl-prefix-entry-head prefix-entry))) | |
1382 | ;; List is now empty | |
1383 | (set cmpl-db-prefix-symbol nil)) | |
1384 | )) | |
1385 | (cmpl-statistics-block | |
1386 | (note-completion-deleted)) | |
1387 | ) | |
136f8f67 | 1388 | (error "Unknown completion `%s'" completion-string) |
59ca07b5 RS |
1389 | )) |
1390 | ||
b578f267 EN |
1391 | ;; Tests -- |
1392 | ;; - Add and Find - | |
1393 | ;; (add-completion-to-head "banana") --> ("banana" 0 nil 0) | |
1394 | ;; (find-exact-completion "banana") --> ("banana" 0 nil 0) | |
1395 | ;; (find-exact-completion "bana") --> nil | |
1396 | ;; (car (find-cmpl-prefix-entry "ban")) --> (("banana" ...)) | |
1397 | ;; (cdr (find-cmpl-prefix-entry "ban")) --> (("banana" ...)) | |
1398 | ;; (add-completion-to-head "banish") --> ("banish" 0 nil 0) | |
1399 | ;; (find-exact-completion "banish") --> ("banish" 0 nil 0) | |
1400 | ;; (car (find-cmpl-prefix-entry "ban")) --> (("banish" ...) ("banana" ...)) | |
1401 | ;; (cdr (find-cmpl-prefix-entry "ban")) --> (("banana" ...)) | |
1402 | ;; (add-completion-to-head "banana") --> ("banana" 0 nil 0) | |
1403 | ;; (car (find-cmpl-prefix-entry "ban")) --> (("banana" ...) ("banish" ...)) | |
1404 | ;; (cdr (find-cmpl-prefix-entry "ban")) --> (("banish" ...)) | |
1405 | ;; | |
1406 | ;; - Deleting - | |
1407 | ;; (add-completion-to-head "banner") --> ("banner" 0 nil 0) | |
1408 | ;; (delete-completion "banner") | |
1409 | ;; (find-exact-completion "banner") --> nil | |
1410 | ;; (car (find-cmpl-prefix-entry "ban")) --> (("banana" ...) ("banish" ...)) | |
1411 | ;; (cdr (find-cmpl-prefix-entry "ban")) --> (("banish" ...)) | |
1412 | ;; (add-completion-to-head "banner") --> ("banner" 0 nil 0) | |
1413 | ;; (delete-completion "banana") | |
1414 | ;; (car (find-cmpl-prefix-entry "ban")) --> (("banner" ...) ("banish" ...)) | |
1415 | ;; (cdr (find-cmpl-prefix-entry "ban")) --> (("banish" ...)) | |
1416 | ;; (delete-completion "banner") | |
1417 | ;; (delete-completion "banish") | |
1418 | ;; (find-cmpl-prefix-entry "ban") --> nil | |
1419 | ;; (delete-completion "banner") --> error | |
1420 | ;; | |
1421 | ;; - Tail - | |
1422 | ;; (add-completion-to-tail-if-new "banana") --> ("banana" 0 nil 0) | |
1423 | ;; (car (find-cmpl-prefix-entry "ban")) --> (("banana" ...)) | |
1424 | ;; (cdr (find-cmpl-prefix-entry "ban")) --> (("banana" ...)) | |
1425 | ;; (add-completion-to-tail-if-new "banish") --> ("banish" 0 nil 0) | |
1426 | ;; (car (find-cmpl-prefix-entry "ban")) -->(("banana" ...) ("banish" ...)) | |
1427 | ;; (cdr (find-cmpl-prefix-entry "ban")) -->(("banish" ...)) | |
1428 | ;; | |
59ca07b5 RS |
1429 | |
1430 | \f | |
b578f267 EN |
1431 | ;;--------------------------------------------------------------------------- |
1432 | ;; Database Update :: Interface level routines | |
1433 | ;;--------------------------------------------------------------------------- | |
1434 | ;; | |
1435 | ;; These lie on top of the database ref. functions but below the standard | |
1436 | ;; user interface level | |
59ca07b5 RS |
1437 | |
1438 | ||
1439 | (defun interactive-completion-string-reader (prompt) | |
1440 | (let* ((default (symbol-under-or-before-point)) | |
1441 | (new-prompt | |
1442 | (if default | |
1443 | (format "%s: (default: %s) " prompt default) | |
1444 | (format "%s: " prompt)) | |
1445 | ) | |
1446 | (read (completing-read new-prompt cmpl-obarray)) | |
1447 | ) | |
1448 | (if (zerop (length read)) (setq read (or default ""))) | |
1449 | (list read) | |
1450 | )) | |
1451 | ||
1452 | (defun check-completion-length (string) | |
a7a2b1f6 | 1453 | (if (< (length string) completion-min-length) |
136f8f67 | 1454 | (error "The string `%s' is too short to be saved as a completion" |
59ca07b5 RS |
1455 | string) |
1456 | (list string))) | |
1457 | ||
1458 | (defun add-completion (string &optional num-uses last-use-time) | |
a7a2b1f6 | 1459 | "Add STRING to completion list, or move it to head of list. |
59ca07b5 RS |
1460 | The completion is altered appropriately if num-uses and/or last-use-time is |
1461 | specified." | |
1462 | (interactive (interactive-completion-string-reader "Completion to add")) | |
1463 | (check-completion-length string) | |
1464 | (let* ((current-completion-source (if (interactive-p) | |
1465 | cmpl-source-interactive | |
1466 | current-completion-source)) | |
1467 | (entry (add-completion-to-head string))) | |
1468 | ||
1469 | (if num-uses (set-completion-num-uses entry num-uses)) | |
1470 | (if last-use-time | |
1471 | (set-completion-last-use-time entry last-use-time)) | |
1472 | )) | |
1473 | ||
1474 | (defun add-permanent-completion (string) | |
a7a2b1f6 | 1475 | "Add STRING if it isn't already listed, and mark it permanent." |
59ca07b5 RS |
1476 | (interactive |
1477 | (interactive-completion-string-reader "Completion to add permanently")) | |
1478 | (let ((current-completion-source (if (interactive-p) | |
1479 | cmpl-source-interactive | |
1480 | current-completion-source)) | |
1481 | ) | |
1482 | (add-completion string nil t) | |
1483 | )) | |
1484 | ||
1485 | (defun kill-completion (string) | |
1486 | (interactive (interactive-completion-string-reader "Completion to kill")) | |
1487 | (check-completion-length string) | |
1488 | (delete-completion string) | |
1489 | ) | |
1490 | ||
1491 | (defun accept-completion () | |
a7a2b1f6 RS |
1492 | "Accepts the pending completion in `completion-to-accept'. |
1493 | This bumps num-uses. Called by `add-completion-to-head' and | |
1494 | `completion-search-reset'." | |
59ca07b5 RS |
1495 | (let ((string completion-to-accept) |
1496 | ;; if this is added afresh here, then it must be a cdabbrev | |
1497 | (current-completion-source cmpl-source-cdabbrev) | |
1498 | entry | |
1499 | ) | |
1500 | (setq completion-to-accept nil) | |
1501 | (setq entry (add-completion-to-head string)) | |
1502 | (set-completion-num-uses entry (1+ (completion-num-uses entry))) | |
1503 | (setq cmpl-completions-accepted-p t) | |
1504 | )) | |
1505 | ||
1506 | (defun use-completion-under-point () | |
a7a2b1f6 RS |
1507 | "Add the completion symbol underneath the point into the completion buffer." |
1508 | (let ((string (and enable-completion (symbol-under-point))) | |
59ca07b5 RS |
1509 | (current-completion-source cmpl-source-cursor-moves)) |
1510 | (if string (add-completion-to-head string)))) | |
1511 | ||
1512 | (defun use-completion-before-point () | |
a7a2b1f6 RS |
1513 | "Add the completion symbol before point into the completion buffer." |
1514 | (let ((string (and enable-completion (symbol-before-point))) | |
59ca07b5 RS |
1515 | (current-completion-source cmpl-source-cursor-moves)) |
1516 | (if string (add-completion-to-head string)))) | |
1517 | ||
1518 | (defun use-completion-under-or-before-point () | |
a7a2b1f6 RS |
1519 | "Add the completion symbol before point into the completion buffer." |
1520 | (let ((string (and enable-completion (symbol-under-or-before-point))) | |
59ca07b5 RS |
1521 | (current-completion-source cmpl-source-cursor-moves)) |
1522 | (if string (add-completion-to-head string)))) | |
1523 | ||
1524 | (defun use-completion-before-separator () | |
a7a2b1f6 | 1525 | "Add the completion symbol before point into the completion buffer. |
c2ced5d8 | 1526 | Completions added this way will automatically be saved if |
a7a2b1f6 RS |
1527 | `completion-on-separator-character' is non-nil." |
1528 | (let ((string (and enable-completion (symbol-before-point))) | |
59ca07b5 RS |
1529 | (current-completion-source cmpl-source-separator) |
1530 | entry) | |
1531 | (cmpl-statistics-block | |
1532 | (note-separator-character string) | |
1533 | ) | |
1534 | (cond (string | |
1535 | (setq entry (add-completion-to-head string)) | |
136f8f67 | 1536 | (if (and completion-on-separator-character |
59ca07b5 | 1537 | (zerop (completion-num-uses entry))) |
136f8f67 RS |
1538 | (progn |
1539 | (set-completion-num-uses entry 1) | |
1540 | (setq cmpl-completions-accepted-p t))))) | |
59ca07b5 RS |
1541 | )) |
1542 | ||
b578f267 EN |
1543 | ;; Tests -- |
1544 | ;; - Add and Find - | |
1545 | ;; (add-completion "banana" 5 10) | |
1546 | ;; (find-exact-completion "banana") --> ("banana" 5 10 0) | |
1547 | ;; (add-completion "banana" 6) | |
1548 | ;; (find-exact-completion "banana") --> ("banana" 6 10 0) | |
1549 | ;; (add-completion "banish") | |
1550 | ;; (car (find-cmpl-prefix-entry "ban")) --> (("banish" ...) ("banana" ...)) | |
1551 | ;; | |
1552 | ;; - Accepting - | |
1553 | ;; (setq completion-to-accept "banana") | |
1554 | ;; (accept-completion) | |
1555 | ;; (find-exact-completion "banana") --> ("banana" 7 10) | |
1556 | ;; (car (find-cmpl-prefix-entry "ban")) --> (("banana" ...) ("banish" ...)) | |
1557 | ;; (setq completion-to-accept "banish") | |
1558 | ;; (add-completion "banner") | |
1559 | ;; (car (find-cmpl-prefix-entry "ban")) | |
1560 | ;; --> (("banner" ...) ("banish" 1 ...) ("banana" 7 ...)) | |
1561 | ;; | |
1562 | ;; - Deleting - | |
1563 | ;; (kill-completion "banish") | |
1564 | ;; (car (find-cmpl-prefix-entry "ban")) --> (("banner" ...) ("banana" ...)) | |
59ca07b5 RS |
1565 | |
1566 | \f | |
b578f267 EN |
1567 | ;;--------------------------------------------------------------------------- |
1568 | ;; Searching the database | |
1569 | ;;--------------------------------------------------------------------------- | |
1570 | ;; Functions outside this block must call completion-search-reset followed | |
1571 | ;; by calls to completion-search-next or completion-search-peek | |
1572 | ;; | |
1573 | ||
1574 | ;; Status variables | |
59ca07b5 RS |
1575 | ;; Commented out to improve loading speed |
1576 | (defvar cmpl-test-string "") | |
1577 | ;; "The current string used by completion-search-next." | |
1578 | (defvar cmpl-test-regexp "") | |
1579 | ;; "The current regexp used by completion-search-next. | |
1580 | ;; (derived from cmpl-test-string)" | |
1581 | (defvar cmpl-last-index 0) | |
1582 | ;; "The last index that completion-search-next was called with." | |
1583 | (defvar cmpl-cdabbrev-reset-p nil) | |
1584 | ;; "Set to t when cdabbrevs have been reset." | |
1585 | (defvar cmpl-next-possibilities nil) | |
1586 | ;; "A pointer to the element BEFORE the next set of possible completions. | |
1587 | ;; cadr of this is the cmpl-next-possibility" | |
1588 | (defvar cmpl-starting-possibilities nil) | |
1589 | ;; "The initial list of starting possibilities." | |
1590 | (defvar cmpl-next-possibility nil) | |
1591 | ;; "The cached next possibility." | |
1592 | (defvar cmpl-tried-list nil) | |
1593 | ;; "A downcased list of all the completions we have tried." | |
1594 | ||
1595 | ||
1596 | (defun completion-search-reset (string) | |
a7a2b1f6 RS |
1597 | "Set up the for completion searching for STRING. |
1598 | STRING must be longer than `completion-prefix-min-length'." | |
59ca07b5 RS |
1599 | (if completion-to-accept (accept-completion)) |
1600 | (setq cmpl-starting-possibilities | |
1601 | (cmpl-prefix-entry-head | |
46f950ca RS |
1602 | (find-cmpl-prefix-entry |
1603 | (downcase (substring string 0 completion-prefix-min-length)))) | |
59ca07b5 RS |
1604 | cmpl-test-string string |
1605 | cmpl-test-regexp (concat (regexp-quote string) ".")) | |
1606 | (completion-search-reset-1) | |
1607 | ) | |
1608 | ||
1609 | (defun completion-search-reset-1 () | |
1610 | (setq cmpl-next-possibilities cmpl-starting-possibilities | |
1611 | cmpl-next-possibility nil | |
1612 | cmpl-cdabbrev-reset-p nil | |
1613 | cmpl-last-index -1 | |
1614 | cmpl-tried-list nil | |
1615 | )) | |
1616 | ||
1617 | (defun completion-search-next (index) | |
a7a2b1f6 RS |
1618 | "Return the next completion entry. |
1619 | If INDEX is out of sequence, reset and start from the top. | |
1620 | If there are no more entries, try cdabbrev and returns only a string." | |
59ca07b5 RS |
1621 | (cond |
1622 | ((= index (setq cmpl-last-index (1+ cmpl-last-index))) | |
1623 | (completion-search-peek t)) | |
136f8f67 | 1624 | ((< index 0) |
59ca07b5 RS |
1625 | (completion-search-reset-1) |
1626 | (setq cmpl-last-index index) | |
1627 | ;; reverse the possibilities list | |
1628 | (setq cmpl-next-possibilities (reverse cmpl-starting-possibilities)) | |
1629 | ;; do a "normal" search | |
1630 | (while (and (completion-search-peek nil) | |
136f8f67 | 1631 | (< (setq index (1+ index)) 0)) |
59ca07b5 RS |
1632 | (setq cmpl-next-possibility nil) |
1633 | ) | |
1634 | (cond ((not cmpl-next-possibilities)) | |
1635 | ;; If no more possibilities, leave it that way | |
1636 | ((= -1 cmpl-last-index) | |
1637 | ;; next completion is at index 0. reset next-possibility list | |
1638 | ;; to start at beginning | |
1639 | (setq cmpl-next-possibilities cmpl-starting-possibilities)) | |
1640 | (t | |
1641 | ;; otherwise point to one before current | |
1642 | (setq cmpl-next-possibilities | |
1643 | (nthcdr (- (length cmpl-starting-possibilities) | |
1644 | (length cmpl-next-possibilities)) | |
1645 | cmpl-starting-possibilities)) | |
1646 | ))) | |
1647 | (t | |
1648 | ;; non-negative index, reset and search | |
1649 | ;;(prin1 'reset) | |
1650 | (completion-search-reset-1) | |
1651 | (setq cmpl-last-index index) | |
1652 | (while (and (completion-search-peek t) | |
136f8f67 | 1653 | (not (< (setq index (1- index)) 0))) |
59ca07b5 RS |
1654 | (setq cmpl-next-possibility nil) |
1655 | )) | |
1656 | ) | |
1657 | (prog1 | |
1658 | cmpl-next-possibility | |
1659 | (setq cmpl-next-possibility nil) | |
1660 | )) | |
1661 | ||
1662 | ||
1663 | (defun completion-search-peek (use-cdabbrev) | |
1664 | "Returns the next completion entry without actually moving the pointers. | |
a7a2b1f6 RS |
1665 | Calling this again or calling `completion-search-next' results in the same |
1666 | string being returned. Depends on `case-fold-search'. | |
1667 | If there are no more entries, try cdabbrev and then return only a string." | |
59ca07b5 RS |
1668 | (cond |
1669 | ;; return the cached value if we have it | |
1670 | (cmpl-next-possibility) | |
1671 | ((and cmpl-next-possibilities | |
1672 | ;; still a few possibilities left | |
1673 | (progn | |
1674 | (while | |
1675 | (and (not (eq 0 (string-match cmpl-test-regexp | |
1676 | (completion-string (car cmpl-next-possibilities))))) | |
1677 | (setq cmpl-next-possibilities (cdr cmpl-next-possibilities)) | |
1678 | )) | |
1679 | cmpl-next-possibilities | |
1680 | )) | |
1681 | ;; successful match | |
1682 | (setq cmpl-next-possibility (car cmpl-next-possibilities) | |
1683 | cmpl-tried-list (cons (downcase (completion-string cmpl-next-possibility)) | |
1684 | cmpl-tried-list) | |
1685 | cmpl-next-possibilities (cdr cmpl-next-possibilities) | |
1686 | ) | |
1687 | cmpl-next-possibility) | |
1688 | (use-cdabbrev | |
1689 | ;; unsuccessful, use cdabbrev | |
1690 | (cond ((not cmpl-cdabbrev-reset-p) | |
1691 | (reset-cdabbrev cmpl-test-string cmpl-tried-list) | |
1692 | (setq cmpl-cdabbrev-reset-p t) | |
1693 | )) | |
1694 | (setq cmpl-next-possibility (next-cdabbrev)) | |
1695 | ) | |
1696 | ;; Completely unsuccessful, return nil | |
1697 | )) | |
1698 | ||
b578f267 EN |
1699 | ;; Tests -- |
1700 | ;; - Add and Find - | |
1701 | ;; (add-completion "banana") | |
1702 | ;; (completion-search-reset "ban") | |
1703 | ;; (completion-search-next 0) --> "banana" | |
1704 | ;; | |
1705 | ;; - Discrimination - | |
1706 | ;; (add-completion "cumberland") | |
1707 | ;; (add-completion "cumberbund") | |
1708 | ;; cumbering | |
1709 | ;; (completion-search-reset "cumb") | |
1710 | ;; (completion-search-peek t) --> "cumberbund" | |
1711 | ;; (completion-search-next 0) --> "cumberbund" | |
1712 | ;; (completion-search-peek t) --> "cumberland" | |
1713 | ;; (completion-search-next 1) --> "cumberland" | |
1714 | ;; (completion-search-peek nil) --> nil | |
1715 | ;; (completion-search-next 2) --> "cumbering" {cdabbrev} | |
1716 | ;; (completion-search-next 3) --> nil or "cumming"{depends on context} | |
1717 | ;; (completion-search-next 1) --> "cumberland" | |
1718 | ;; (completion-search-peek t) --> "cumbering" {cdabbrev} | |
1719 | ;; | |
1720 | ;; - Accepting - | |
1721 | ;; (completion-search-next 1) --> "cumberland" | |
1722 | ;; (setq completion-to-accept "cumberland") | |
1723 | ;; (completion-search-reset "foo") | |
1724 | ;; (completion-search-reset "cum") | |
1725 | ;; (completion-search-next 0) --> "cumberland" | |
1726 | ;; | |
1727 | ;; - Deleting - | |
1728 | ;; (kill-completion "cumberland") | |
1729 | ;; cummings | |
1730 | ;; (completion-search-reset "cum") | |
1731 | ;; (completion-search-next 0) --> "cumberbund" | |
1732 | ;; (completion-search-next 1) --> "cummings" | |
1733 | ;; | |
1734 | ;; - Ignoring Capitalization - | |
1735 | ;; (completion-search-reset "CuMb") | |
1736 | ;; (completion-search-next 0) --> "cumberbund" | |
59ca07b5 RS |
1737 | |
1738 | ||
1739 | \f | |
b578f267 EN |
1740 | ;;----------------------------------------------- |
1741 | ;; COMPLETE | |
1742 | ;;----------------------------------------------- | |
59ca07b5 RS |
1743 | |
1744 | (defun completion-mode () | |
a7a2b1f6 | 1745 | "Toggles whether or not to add new words to the completion database." |
59ca07b5 | 1746 | (interactive) |
a7a2b1f6 RS |
1747 | (setq enable-completion (not enable-completion)) |
1748 | (message "Completion mode is now %s." (if enable-completion "ON" "OFF")) | |
59ca07b5 RS |
1749 | ) |
1750 | ||
1751 | (defvar cmpl-current-index 0) | |
1752 | (defvar cmpl-original-string nil) | |
1753 | (defvar cmpl-last-insert-location -1) | |
1754 | (defvar cmpl-leave-point-at-start nil) | |
1755 | ||
1756 | (defun complete (&optional arg) | |
a7a2b1f6 | 1757 | "Fill out a completion of the word before point. |
eb8c3be9 | 1758 | Point is left at end. Consecutive calls rotate through all possibilities. |
59ca07b5 RS |
1759 | Prefix args :: |
1760 | control-u :: leave the point at the beginning of the completion rather | |
1761 | than at the end. | |
1762 | a number :: rotate through the possible completions by that amount | |
1763 | `-' :: same as -1 (insert previous completion) | |
a7a2b1f6 | 1764 | {See the comments at the top of `completion.el' for more info.}" |
59ca07b5 RS |
1765 | (interactive "*p") |
1766 | ;;; Set up variables | |
1767 | (cond ((eq last-command this-command) | |
1768 | ;; Undo last one | |
1769 | (delete-region cmpl-last-insert-location (point)) | |
1770 | ;; get next completion | |
1771 | (setq cmpl-current-index (+ cmpl-current-index (or arg 1))) | |
1772 | ) | |
1773 | (t | |
1774 | (if (not cmpl-initialized-p) | |
1775 | (initialize-completions)) ;; make sure everything's loaded | |
1776 | (cond ((consp current-prefix-arg) ;; control-u | |
1777 | (setq arg 0) | |
1778 | (setq cmpl-leave-point-at-start t) | |
1779 | ) | |
1780 | (t | |
1781 | (setq cmpl-leave-point-at-start nil) | |
1782 | )) | |
1783 | ;; get string | |
1784 | (setq cmpl-original-string (symbol-before-point-for-complete)) | |
1785 | (cond ((not cmpl-original-string) | |
1786 | (setq this-command 'failed-complete) | |
136f8f67 | 1787 | (error "To complete, point must be after a symbol at least %d character long" |
a7a2b1f6 | 1788 | completion-prefix-min-length))) |
59ca07b5 RS |
1789 | ;; get index |
1790 | (setq cmpl-current-index (if current-prefix-arg arg 0)) | |
1791 | ;; statistics | |
1792 | (cmpl-statistics-block | |
1793 | (note-complete-entered-afresh cmpl-original-string)) | |
1794 | ;; reset database | |
1795 | (completion-search-reset cmpl-original-string) | |
1796 | ;; erase what we've got | |
1797 | (delete-region cmpl-symbol-start cmpl-symbol-end) | |
1798 | )) | |
1799 | ||
1800 | ;; point is at the point to insert the new symbol | |
1801 | ;; Get the next completion | |
1802 | (let* ((print-status-p | |
a7a2b1f6 | 1803 | (and (>= baud-rate completion-prompt-speed-threshold) |
59ca07b5 RS |
1804 | (not (minibuffer-window-selected-p)))) |
1805 | (insert-point (point)) | |
1806 | (entry (completion-search-next cmpl-current-index)) | |
1807 | string | |
1808 | ) | |
1809 | ;; entry is either a completion entry or a string (if cdabbrev) | |
1810 | ||
1811 | ;; If found, insert | |
1812 | (cond (entry | |
1813 | ;; Setup for proper case | |
1814 | (setq string (if (stringp entry) | |
1815 | entry (completion-string entry))) | |
1816 | (setq string (cmpl-merge-string-cases | |
1817 | string cmpl-original-string)) | |
1818 | ;; insert | |
1819 | (insert string) | |
1820 | ;; accept it | |
1821 | (setq completion-to-accept string) | |
1822 | ;; fixup and cache point | |
1823 | (cond (cmpl-leave-point-at-start | |
1824 | (setq cmpl-last-insert-location (point)) | |
1825 | (goto-char insert-point)) | |
1826 | (t;; point at end, | |
1827 | (setq cmpl-last-insert-location insert-point)) | |
1828 | ) | |
1829 | ;; statistics | |
1830 | (cmpl-statistics-block | |
1831 | (note-complete-inserted entry cmpl-current-index)) | |
1832 | ;; Done ! cmpl-stat-complete-successful | |
1833 | ;;display the next completion | |
1834 | (cond | |
1835 | ((and print-status-p | |
1836 | ;; This updates the display and only prints if there | |
1837 | ;; is no typeahead | |
a7a2b1f6 | 1838 | (sit-for 0) |
59ca07b5 RS |
1839 | (setq entry |
1840 | (completion-search-peek | |
a7a2b1f6 | 1841 | completion-cdabbrev-prompt-flag))) |
59ca07b5 RS |
1842 | (setq string (if (stringp entry) |
1843 | entry (completion-string entry))) | |
1844 | (setq string (cmpl-merge-string-cases | |
1845 | string cmpl-original-string)) | |
1846 | (message "Next completion: %s" string) | |
1847 | )) | |
1848 | ) | |
1849 | (t;; none found, insert old | |
1850 | (insert cmpl-original-string) | |
1851 | ;; Don't accept completions | |
1852 | (setq completion-to-accept nil) | |
1853 | ;; print message | |
23b97eb9 RS |
1854 | ;; This used to call cmpl19-sit-for, an undefined function. |
1855 | ;; I hope that sit-for does the right thing; I don't know -- rms. | |
1856 | (if (and print-status-p (sit-for 0)) | |
59ca07b5 RS |
1857 | (message "No %scompletions." |
1858 | (if (eq this-command last-command) "more " ""))) | |
1859 | ;; statistics | |
1860 | (cmpl-statistics-block | |
1861 | (record-complete-failed cmpl-current-index)) | |
1862 | ;; Pretend that we were never here | |
1863 | (setq this-command 'failed-complete) | |
1864 | )))) | |
1865 | ||
b578f267 EN |
1866 | ;;----------------------------------------------- |
1867 | ;; "Complete" Key Keybindings | |
1868 | ;;----------------------------------------------- | |
59ca07b5 | 1869 | |
59ca07b5 | 1870 | (global-set-key "\M-\r" 'complete) |
a7a2b1f6 RS |
1871 | (global-set-key [?\C-\r] 'complete) |
1872 | (define-key function-key-map [C-return] [?\C-\r]) | |
59ca07b5 | 1873 | |
b578f267 EN |
1874 | ;; Tests - |
1875 | ;; (add-completion "cumberland") | |
1876 | ;; (add-completion "cumberbund") | |
1877 | ;; cum | |
1878 | ;; Cumber | |
1879 | ;; cumbering | |
1880 | ;; cumb | |
59ca07b5 RS |
1881 | |
1882 | \f | |
b578f267 EN |
1883 | ;;--------------------------------------------------------------------------- |
1884 | ;; Parsing definitions from files into the database | |
1885 | ;;--------------------------------------------------------------------------- | |
59ca07b5 | 1886 | |
b578f267 EN |
1887 | ;;----------------------------------------------- |
1888 | ;; Top Level functions :: | |
1889 | ;;----------------------------------------------- | |
59ca07b5 | 1890 | |
b578f267 | 1891 | ;; User interface |
59ca07b5 | 1892 | (defun add-completions-from-file (file) |
a7a2b1f6 | 1893 | "Parse possible completions from a file and add them to data base." |
59ca07b5 | 1894 | (interactive "fFile: ") |
a7a2b1f6 | 1895 | (setq file (expand-file-name file)) |
59ca07b5 RS |
1896 | (let* ((buffer (get-file-buffer file)) |
1897 | (buffer-already-there-p buffer) | |
1898 | ) | |
136f8f67 RS |
1899 | (if (not buffer-already-there-p) |
1900 | (let ((completions-merging-modes nil)) | |
1901 | (setq buffer (find-file-noselect file)))) | |
59ca07b5 RS |
1902 | (unwind-protect |
1903 | (save-excursion | |
1904 | (set-buffer buffer) | |
1905 | (add-completions-from-buffer) | |
1906 | ) | |
136f8f67 RS |
1907 | (if (not buffer-already-there-p) |
1908 | (kill-buffer buffer))))) | |
59ca07b5 RS |
1909 | |
1910 | (defun add-completions-from-buffer () | |
1911 | (interactive) | |
1912 | (let ((current-completion-source cmpl-source-file-parsing) | |
1913 | (start-num | |
1914 | (cmpl-statistics-block | |
1915 | (aref completion-add-count-vector cmpl-source-file-parsing))) | |
1916 | mode | |
1917 | ) | |
1918 | (cond ((memq major-mode '(emacs-lisp-mode lisp-mode)) | |
1919 | (add-completions-from-lisp-buffer) | |
1920 | (setq mode 'lisp) | |
1921 | ) | |
1922 | ((memq major-mode '(c-mode)) | |
1923 | (add-completions-from-c-buffer) | |
1924 | (setq mode 'c) | |
1925 | ) | |
1926 | (t | |
136f8f67 | 1927 | (error "Cannot parse completions in %s buffers" |
59ca07b5 RS |
1928 | major-mode) |
1929 | )) | |
1930 | (cmpl-statistics-block | |
1931 | (record-cmpl-parse-file | |
1932 | mode (point-max) | |
1933 | (- (aref completion-add-count-vector cmpl-source-file-parsing) | |
1934 | start-num))) | |
1935 | )) | |
1936 | ||
b578f267 | 1937 | ;; Find file hook |
59ca07b5 | 1938 | (defun cmpl-find-file-hook () |
a7a2b1f6 | 1939 | (cond (enable-completion |
59ca07b5 | 1940 | (cond ((and (memq major-mode '(emacs-lisp-mode lisp-mode)) |
a7a2b1f6 | 1941 | (memq 'lisp completions-merging-modes) |
59ca07b5 RS |
1942 | ) |
1943 | (add-completions-from-buffer)) | |
1944 | ((and (memq major-mode '(c-mode)) | |
a7a2b1f6 | 1945 | (memq 'c completions-merging-modes) |
59ca07b5 RS |
1946 | ) |
1947 | (add-completions-from-buffer) | |
1948 | ))) | |
1949 | )) | |
1950 | ||
136f8f67 | 1951 | (add-hook 'find-file-hooks 'cmpl-find-file-hook) |
59ca07b5 | 1952 | |
b578f267 EN |
1953 | ;;----------------------------------------------- |
1954 | ;; Tags Table Completions | |
1955 | ;;----------------------------------------------- | |
59ca07b5 RS |
1956 | |
1957 | (defun add-completions-from-tags-table () | |
1958 | ;; Inspired by eero@media-lab.media.mit.edu | |
a7a2b1f6 | 1959 | "Add completions from the current tags table." |
59ca07b5 RS |
1960 | (interactive) |
1961 | (visit-tags-table-buffer) ;this will prompt if no tags-table | |
1962 | (save-excursion | |
1963 | (goto-char (point-min)) | |
1964 | (let (string) | |
1965 | (condition-case e | |
1966 | (while t | |
1967 | (search-forward "\177") | |
1968 | (backward-char 3) | |
1969 | (and (setq string (symbol-under-point)) | |
1970 | (add-completion-to-tail-if-new string)) | |
1971 | (forward-char 3) | |
1972 | ) | |
1973 | (search-failed) | |
1974 | )))) | |
1975 | ||
1976 | \f | |
b578f267 EN |
1977 | ;;----------------------------------------------- |
1978 | ;; Lisp File completion parsing | |
1979 | ;;----------------------------------------------- | |
1980 | ;; This merely looks for phrases beginning with (def.... or | |
1981 | ;; (package:def ... and takes the next word. | |
1982 | ;; | |
1983 | ;; We tried using forward-lines and explicit searches but the regexp technique | |
1984 | ;; was faster. (About 100K characters per second) | |
1985 | ;; | |
59ca07b5 RS |
1986 | (defconst *lisp-def-regexp* |
1987 | "\n(\\(\\w*:\\)?def\\(\\w\\|\\s_\\)*\\s +(*" | |
1988 | "A regexp that searches for lisp definition form." | |
1989 | ) | |
1990 | ||
b578f267 EN |
1991 | ;; Tests - |
1992 | ;; (and (string-match *lisp-def-regexp* "\n(defun foo") (match-end 0)) -> 8 | |
1993 | ;; (and (string-match *lisp-def-regexp* "\n(si:def foo") (match-end 0)) -> 9 | |
1994 | ;; (and (string-match *lisp-def-regexp* "\n(def-bar foo")(match-end 0)) -> 10 | |
1995 | ;; (and (string-match *lisp-def-regexp* "\n(defun (foo") (match-end 0)) -> 9 | |
59ca07b5 | 1996 | |
b578f267 EN |
1997 | ;; Parses all the definition names from a Lisp mode buffer and adds them to |
1998 | ;; the completion database. | |
59ca07b5 | 1999 | (defun add-completions-from-lisp-buffer () |
59ca07b5 RS |
2000 | ;;; Benchmarks |
2001 | ;;; Sun-3/280 - 1500 to 3000 lines of lisp code per second | |
2002 | (let (string) | |
2003 | (save-excursion | |
2004 | (goto-char (point-min)) | |
2005 | (condition-case e | |
2006 | (while t | |
2007 | (re-search-forward *lisp-def-regexp*) | |
2008 | (and (setq string (symbol-under-point)) | |
2009 | (add-completion-to-tail-if-new string)) | |
2010 | ) | |
2011 | (search-failed) | |
2012 | )))) | |
2013 | ||
2014 | \f | |
b578f267 EN |
2015 | ;;----------------------------------------------- |
2016 | ;; C file completion parsing | |
2017 | ;;----------------------------------------------- | |
2018 | ;; C : | |
2019 | ;; Looks for #define or [<storage class>] [<type>] <name>{,<name>} | |
2020 | ;; or structure, array or pointer defs. | |
2021 | ;; It gets most of the definition names. | |
2022 | ;; | |
2023 | ;; As you might suspect by now, we use some symbol table hackery | |
2024 | ;; | |
2025 | ;; Symbol separator chars (have whitespace syntax) --> , ; * = ( | |
2026 | ;; Opening char --> [ { | |
2027 | ;; Closing char --> ] } | |
2028 | ;; opening and closing must be skipped over | |
2029 | ;; Whitespace chars (have symbol syntax) | |
2030 | ;; Everything else has word syntax | |
59ca07b5 | 2031 | |
a7a2b1f6 | 2032 | (defun cmpl-make-c-def-completion-syntax-table () |
32168d16 | 2033 | (let ((table (make-syntax-table)) |
59ca07b5 | 2034 | (whitespace-chars '(? ?\n ?\t ?\f ?\v ?\r)) |
eb8c3be9 | 2035 | ;; unfortunately the ?( causes the parens to appear unbalanced |
59ca07b5 RS |
2036 | (separator-chars '(?, ?* ?= ?\( ?\; |
2037 | )) | |
136f8f67 | 2038 | i) |
59ca07b5 | 2039 | ;; default syntax is whitespace |
136f8f67 RS |
2040 | (setq i 0) |
2041 | (while (< i 256) | |
2042 | (modify-syntax-entry i "w" table) | |
2043 | (setq i (1+ i))) | |
2044 | (completion-dolist (char whitespace-chars) | |
59ca07b5 | 2045 | (modify-syntax-entry char "_" table)) |
136f8f67 | 2046 | (completion-dolist (char separator-chars) |
59ca07b5 RS |
2047 | (modify-syntax-entry char " " table)) |
2048 | (modify-syntax-entry ?\[ "(]" table) | |
2049 | (modify-syntax-entry ?\{ "(}" table) | |
2050 | (modify-syntax-entry ?\] ")[" table) | |
2051 | (modify-syntax-entry ?\} "){" table) | |
2052 | table)) | |
2053 | ||
a7a2b1f6 | 2054 | (defconst cmpl-c-def-syntax-table (cmpl-make-c-def-completion-syntax-table)) |
59ca07b5 | 2055 | |
b578f267 | 2056 | ;; Regexps |
59ca07b5 RS |
2057 | (defconst *c-def-regexp* |
2058 | ;; This stops on lines with possible definitions | |
2059 | "\n[_a-zA-Z#]" | |
2060 | ;; This stops after the symbol to add. | |
2061 | ;;"\n\\(#define\\s +.\\|\\(\\(\\w\\|\\s_\\)+\\b\\s *\\)+[(;,[*{=]\\)" | |
2062 | ;; This stops before the symbol to add. {Test cases in parens. below} | |
2063 | ;;"\n\\(\\(\\w\\|\\s_\\)+\\s *(\\|\\(\\(#define\\|auto\\|extern\\|register\\|static\\|int\\|long\\|short\\|unsigned\\|char\\|void\\|float\\|double\\|enum\\|struct\\|union\\|typedef\\)\\s +\\)+\\)" | |
2064 | ;; this simple version picks up too much extraneous stuff | |
2065 | ;; "\n\\(\\w\\|\\s_\\|#\\)\\B" | |
2066 | "A regexp that searches for a definition form." | |
2067 | ) | |
2068 | ; | |
2069 | ;(defconst *c-cont-regexp* | |
2070 | ; "\\(\\w\\|\\s_\\)+\\b\\s *\\({\\|\\(\\[[0-9\t ]*\\]\\s *\\)*,\\(*\\|\\s \\)*\\b\\)" | |
2071 | ; "This regexp should be used in a looking-at to parse for lists of variables.") | |
2072 | ; | |
2073 | ;(defconst *c-struct-regexp* | |
2074 | ; "\\(*\\|\\s \\)*\\b" | |
2075 | ; "This regexp should be used to test whether a symbol follows a structure definition.") | |
2076 | ||
2077 | ;(defun test-c-def-regexp (regexp string) | |
2078 | ; (and (eq 0 (string-match regexp string)) (match-end 0)) | |
2079 | ; ) | |
2080 | ||
b578f267 EN |
2081 | ;; Tests - |
2082 | ;; (test-c-def-regexp *c-def-regexp* "\n#define foo") -> 10 (9) | |
2083 | ;; (test-c-def-regexp *c-def-regexp* "\nfoo (x, y) {") -> 6 (6) | |
2084 | ;; (test-c-def-regexp *c-def-regexp* "\nint foo (x, y)") -> 10 (5) | |
2085 | ;; (test-c-def-regexp *c-def-regexp* "\n int foo (x, y)") -> nil | |
2086 | ;; (test-c-def-regexp *c-cont-regexp* "oo, bar") -> 4 | |
2087 | ;; (test-c-def-regexp *c-cont-regexp* "oo, *bar") -> 5 | |
2088 | ;; (test-c-def-regexp *c-cont-regexp* "a [5][6], bar") -> 10 | |
2089 | ;; (test-c-def-regexp *c-cont-regexp* "oo(x,y)") -> nil | |
2090 | ;; (test-c-def-regexp *c-cont-regexp* "a [6] ,\t bar") -> 9 | |
2091 | ;; (test-c-def-regexp *c-cont-regexp* "oo {trout =1} my_carp;") -> 14 | |
2092 | ;; (test-c-def-regexp *c-cont-regexp* "truct_p complex foon") -> nil | |
2093 | ||
2094 | ;; Parses all the definition names from a C mode buffer and adds them to the | |
2095 | ;; completion database. | |
59ca07b5 | 2096 | (defun add-completions-from-c-buffer () |
59ca07b5 RS |
2097 | ;; Benchmark -- |
2098 | ;; Sun 3/280-- 1250 lines/sec. | |
2099 | ||
2100 | (let (string next-point char | |
2101 | (saved-syntax (syntax-table)) | |
2102 | ) | |
2103 | (save-excursion | |
2104 | (goto-char (point-min)) | |
2105 | (catch 'finish-add-completions | |
2106 | (unwind-protect | |
2107 | (while t | |
2108 | ;; we loop here only when scan-sexps fails | |
2109 | ;; (i.e. unbalance exps.) | |
2110 | (set-syntax-table cmpl-c-def-syntax-table) | |
2111 | (condition-case e | |
2112 | (while t | |
2113 | (re-search-forward *c-def-regexp*) | |
2114 | (cond | |
2115 | ((= (preceding-char) ?#) | |
2116 | ;; preprocessor macro, see if it's one we handle | |
2117 | (setq string (buffer-substring (point) (+ (point) 6))) | |
2118 | (cond ((or (string-equal string "define") | |
2119 | (string-equal string "ifdef ") | |
2120 | ) | |
2121 | ;; skip forward over definition symbol | |
2122 | ;; and add it to database | |
2123 | (and (forward-word 2) | |
2124 | (setq string (symbol-before-point)) | |
2125 | ;;(push string foo) | |
2126 | (add-completion-to-tail-if-new string) | |
2127 | )))) | |
2128 | (t | |
2129 | ;; C definition | |
2130 | (setq next-point (point)) | |
2131 | (while (and | |
2132 | next-point | |
2133 | ;; scan to next separator char. | |
2134 | (setq next-point (scan-sexps next-point 1)) | |
2135 | ) | |
2136 | ;; position the point on the word we want to add | |
2137 | (goto-char next-point) | |
2138 | (while (= (setq char (following-char)) ?*) | |
2139 | ;; handle pointer ref | |
2140 | ;; move to next separator char. | |
2141 | (goto-char | |
2142 | (setq next-point (scan-sexps (point) 1))) | |
2143 | ) | |
2144 | (forward-word -1) | |
2145 | ;; add to database | |
2146 | (if (setq string (symbol-under-point)) | |
2147 | ;; (push string foo) | |
2148 | (add-completion-to-tail-if-new string) | |
2149 | ;; Local TMC hack (useful for parsing paris.h) | |
2150 | (if (and (looking-at "_AP") ;; "ansi prototype" | |
2151 | (progn | |
2152 | (forward-word -1) | |
2153 | (setq string | |
2154 | (symbol-under-point)) | |
2155 | )) | |
2156 | (add-completion-to-tail-if-new string) | |
2157 | ) | |
2158 | ) | |
2159 | ;; go to next | |
2160 | (goto-char next-point) | |
2161 | ;; (push (format "%c" (following-char)) foo) | |
2162 | (if (= (char-syntax char) ?\() | |
2163 | ;; if on an opening delimiter, go to end | |
2164 | (while (= (char-syntax char) ?\() | |
2165 | (setq next-point (scan-sexps next-point 1) | |
2166 | char (char-after next-point)) | |
2167 | ) | |
2168 | (or (= char ?,) | |
2169 | ;; Current char is an end char. | |
2170 | (setq next-point nil) | |
2171 | )) | |
2172 | )))) | |
2173 | (search-failed ;;done | |
2174 | (throw 'finish-add-completions t) | |
2175 | ) | |
2176 | (error | |
2177 | ;; Check for failure in scan-sexps | |
136f8f67 | 2178 | (if (or (string-equal (nth 1 e) |
59ca07b5 | 2179 | "Containing expression ends prematurely") |
136f8f67 | 2180 | (string-equal (nth 1 e) "Unbalanced parentheses")) |
59ca07b5 RS |
2181 | ;; unbalanced paren., keep going |
2182 | ;;(ding) | |
2183 | (forward-line 1) | |
136f8f67 | 2184 | (message "Error parsing C buffer for completions--please send bug report") |
59ca07b5 RS |
2185 | (throw 'finish-add-completions t) |
2186 | )) | |
2187 | )) | |
2188 | (set-syntax-table saved-syntax) | |
2189 | ))))) | |
2190 | ||
2191 | \f | |
b578f267 EN |
2192 | ;;--------------------------------------------------------------------------- |
2193 | ;; Init files | |
2194 | ;;--------------------------------------------------------------------------- | |
59ca07b5 | 2195 | |
b578f267 | 2196 | ;; The version of save-completions-to-file called at kill-emacs time. |
59ca07b5 | 2197 | (defun kill-emacs-save-completions () |
136f8f67 RS |
2198 | (if (and save-completions-flag enable-completion cmpl-initialized-p) |
2199 | (cond | |
2200 | ((not cmpl-completions-accepted-p) | |
2201 | (message "Completions database has not changed - not writing.")) | |
2202 | (t | |
2203 | (save-completions-to-file))))) | |
59ca07b5 | 2204 | |
1add72b5 RS |
2205 | ;; There is no point bothering to change this again |
2206 | ;; unless the package changes so much that it matters | |
2207 | ;; for people that have saved completions. | |
2208 | (defconst completion-version "11") | |
2209 | ||
59ca07b5 RS |
2210 | (defconst saved-cmpl-file-header |
2211 | ";;; Completion Initialization file. | |
b578f267 EN |
2212 | ;; Version = %s |
2213 | ;; Format is (<string> . <last-use-time>) | |
2214 | ;; <string> is the completion | |
2215 | ;; <last-use-time> is the time the completion was last used | |
2216 | ;; If it is t, the completion will never be pruned from the file. | |
2217 | ;; Otherwise it is in hours since origin. | |
59ca07b5 RS |
2218 | \n") |
2219 | ||
2220 | (defun completion-backup-filename (filename) | |
2221 | (concat filename ".BAK")) | |
2222 | ||
2223 | (defun save-completions-to-file (&optional filename) | |
a7a2b1f6 RS |
2224 | "Save completions in init file FILENAME. |
2225 | If file name is not specified, use `save-completions-file-name'." | |
59ca07b5 | 2226 | (interactive) |
a7a2b1f6 | 2227 | (setq filename (expand-file-name (or filename save-completions-file-name))) |
136f8f67 RS |
2228 | (if (file-writable-p filename) |
2229 | (progn | |
2230 | (if (not cmpl-initialized-p) | |
2231 | (initialize-completions));; make sure everything's loaded | |
2232 | (message "Saving completions to file %s" filename) | |
2233 | ||
2234 | (let* ((delete-old-versions t) | |
2235 | (kept-old-versions 0) | |
2236 | (kept-new-versions completions-file-versions-kept) | |
2237 | last-use-time | |
2238 | (current-time (cmpl-hours-since-origin)) | |
2239 | (total-in-db 0) | |
2240 | (total-perm 0) | |
2241 | (total-saved 0) | |
2242 | (backup-filename (completion-backup-filename filename)) | |
2243 | ) | |
59ca07b5 | 2244 | |
136f8f67 RS |
2245 | (save-excursion |
2246 | (get-buffer-create " *completion-save-buffer*") | |
2247 | (set-buffer " *completion-save-buffer*") | |
2248 | (setq buffer-file-name filename) | |
2249 | ||
2250 | (if (not (verify-visited-file-modtime (current-buffer))) | |
2251 | (progn | |
2252 | ;; file has changed on disk. Bring us up-to-date | |
2253 | (message "Completion file has changed. Merging. . .") | |
2254 | (load-completions-from-file filename t) | |
2255 | (message "Merging finished. Saving completions to file %s" filename))) | |
2256 | ||
2257 | ;; prepare the buffer to be modified | |
2258 | (clear-visited-file-modtime) | |
2259 | (erase-buffer) | |
2260 | ;; (/ 1 0) | |
2261 | (insert (format saved-cmpl-file-header completion-version)) | |
2262 | (completion-dolist (completion (list-all-completions)) | |
2263 | (setq total-in-db (1+ total-in-db)) | |
2264 | (setq last-use-time (completion-last-use-time completion)) | |
2265 | ;; Update num uses and maybe write completion to a file | |
2266 | (cond ((or;; Write to file if | |
2267 | ;; permanent | |
2268 | (and (eq last-use-time t) | |
2269 | (setq total-perm (1+ total-perm))) | |
2270 | ;; or if | |
2271 | (if (> (completion-num-uses completion) 0) | |
2272 | ;; it's been used | |
2273 | (setq last-use-time current-time) | |
2274 | ;; or it was saved before and | |
2275 | (and last-use-time | |
2276 | ;; save-completions-retention-time is nil | |
2277 | (or (not save-completions-retention-time) | |
2278 | ;; or time since last use is < ...retention-time* | |
2279 | (< (- current-time last-use-time) | |
2280 | save-completions-retention-time)) | |
2281 | ))) | |
2282 | ;; write to file | |
2283 | (setq total-saved (1+ total-saved)) | |
2284 | (insert (prin1-to-string (cons (completion-string completion) | |
2285 | last-use-time)) "\n") | |
2286 | ))) | |
59ca07b5 | 2287 | |
136f8f67 RS |
2288 | ;; write the buffer |
2289 | (condition-case e | |
2290 | (let ((file-exists-p (file-exists-p filename))) | |
2291 | (if file-exists-p | |
2292 | (progn | |
2293 | ;; If file exists . . . | |
2294 | ;; Save a backup(so GNU doesn't screw us when we're out of disk) | |
2295 | ;; (GNU leaves a 0 length file if it gets a disk full error!) | |
59ca07b5 | 2296 | |
136f8f67 RS |
2297 | ;; If backup doesn't exit, Rename current to backup |
2298 | ;; {If backup exists the primary file is probably messed up} | |
2299 | (or (file-exists-p backup-filename) | |
2300 | (rename-file filename backup-filename)) | |
2301 | ;; Copy the backup back to the current name | |
2302 | ;; (so versioning works) | |
2303 | (copy-file backup-filename filename t))) | |
2304 | ;; Save it | |
2305 | (save-buffer) | |
2306 | (if file-exists-p | |
2307 | ;; If successful, remove backup | |
2308 | (delete-file backup-filename))) | |
2309 | (error | |
2310 | (set-buffer-modified-p nil) | |
2311 | (message "Couldn't save completion file `%s'" filename) | |
2312 | )) | |
2313 | ;; Reset accepted-p flag | |
2314 | (setq cmpl-completions-accepted-p nil) | |
2315 | ) | |
2316 | (cmpl-statistics-block | |
2317 | (record-save-completions total-in-db total-perm total-saved)) | |
2318 | )))) | |
59ca07b5 | 2319 | |
b578f267 EN |
2320 | ;;(defun autosave-completions () |
2321 | ;; (if (and save-completions-flag enable-completion cmpl-initialized-p | |
2322 | ;; *completion-auto-save-period* | |
2323 | ;; (> cmpl-emacs-idle-time *completion-auto-save-period*) | |
2324 | ;; cmpl-completions-accepted-p) | |
2325 | ;; (save-completions-to-file))) | |
59ca07b5 | 2326 | |
b578f267 | 2327 | ;;(add-hook 'cmpl-emacs-idle-time-hooks 'autosave-completions) |
59ca07b5 RS |
2328 | |
2329 | (defun load-completions-from-file (&optional filename no-message-p) | |
a7a2b1f6 RS |
2330 | "Loads a completion init file FILENAME. |
2331 | If file is not specified, then use `save-completions-file-name'." | |
59ca07b5 | 2332 | (interactive) |
a7a2b1f6 | 2333 | (setq filename (expand-file-name (or filename save-completions-file-name))) |
59ca07b5 RS |
2334 | (let* ((backup-filename (completion-backup-filename filename)) |
2335 | (backup-readable-p (file-readable-p backup-filename)) | |
2336 | ) | |
136f8f67 RS |
2337 | (if backup-readable-p (setq filename backup-filename)) |
2338 | (if (file-readable-p filename) | |
2339 | (progn | |
2340 | (if (not no-message-p) | |
2341 | (message "Loading completions from %sfile %s . . ." | |
2342 | (if backup-readable-p "backup " "") filename)) | |
2343 | (save-excursion | |
2344 | (get-buffer-create " *completion-save-buffer*") | |
2345 | (set-buffer " *completion-save-buffer*") | |
2346 | (setq buffer-file-name filename) | |
2347 | ;; prepare the buffer to be modified | |
2348 | (clear-visited-file-modtime) | |
2349 | (erase-buffer) | |
59ca07b5 | 2350 | |
136f8f67 RS |
2351 | (let ((insert-okay-p nil) |
2352 | (buffer (current-buffer)) | |
2353 | (current-time (cmpl-hours-since-origin)) | |
2354 | string num-uses entry last-use-time | |
2355 | cmpl-entry cmpl-last-use-time | |
2356 | (current-completion-source cmpl-source-init-file) | |
2357 | (start-num | |
2358 | (cmpl-statistics-block | |
2359 | (aref completion-add-count-vector cmpl-source-file-parsing))) | |
2360 | (total-in-file 0) (total-perm 0) | |
2361 | ) | |
2362 | ;; insert the file into a buffer | |
2363 | (condition-case e | |
2364 | (progn (insert-file-contents filename t) | |
2365 | (setq insert-okay-p t)) | |
2366 | ||
2367 | (file-error | |
2368 | (message "File error trying to load completion file %s." | |
2369 | filename))) | |
2370 | ;; parse it | |
2371 | (if insert-okay-p | |
2372 | (progn | |
2373 | (goto-char (point-min)) | |
2374 | ||
2375 | (condition-case e | |
2376 | (while t | |
2377 | (setq entry (read buffer)) | |
2378 | (setq total-in-file (1+ total-in-file)) | |
2379 | (cond | |
2380 | ((and (consp entry) | |
2381 | (stringp (setq string (car entry))) | |
2382 | (cond | |
2383 | ((eq (setq last-use-time (cdr entry)) 'T) | |
2384 | ;; handle case sensitivity | |
2385 | (setq total-perm (1+ total-perm)) | |
2386 | (setq last-use-time t)) | |
2387 | ((eq last-use-time t) | |
2388 | (setq total-perm (1+ total-perm))) | |
2389 | ((integerp last-use-time)) | |
2390 | )) | |
2391 | ;; Valid entry | |
2392 | ;; add it in | |
2393 | (setq cmpl-last-use-time | |
2394 | (completion-last-use-time | |
2395 | (setq cmpl-entry | |
2396 | (add-completion-to-tail-if-new string)) | |
59ca07b5 | 2397 | )) |
136f8f67 RS |
2398 | (if (or (eq last-use-time t) |
2399 | (and (> last-use-time 1000);;backcompatibility | |
2400 | (not (eq cmpl-last-use-time t)) | |
2401 | (or (not cmpl-last-use-time) | |
2402 | ;; more recent | |
2403 | (> last-use-time cmpl-last-use-time)) | |
2404 | )) | |
2405 | ;; update last-use-time | |
2406 | (set-completion-last-use-time cmpl-entry last-use-time) | |
2407 | )) | |
2408 | (t | |
2409 | ;; Bad format | |
2410 | (message "Error: invalid saved completion - %s" | |
2411 | (prin1-to-string entry)) | |
2412 | ;; try to get back in sync | |
2413 | (search-forward "\n(") | |
2414 | ))) | |
2415 | (search-failed | |
2416 | (message "End of file while reading completions.") | |
2417 | ) | |
2418 | (end-of-file | |
2419 | (if (= (point) (point-max)) | |
2420 | (if (not no-message-p) | |
2421 | (message "Loading completions from file %s . . . Done." | |
2422 | filename)) | |
2423 | (message "End of file while reading completions.") | |
2424 | )) | |
59ca07b5 | 2425 | ))) |
59ca07b5 | 2426 | |
136f8f67 RS |
2427 | (cmpl-statistics-block |
2428 | (record-load-completions | |
2429 | total-in-file total-perm | |
2430 | (- (aref completion-add-count-vector cmpl-source-init-file) | |
2431 | start-num))) | |
59ca07b5 | 2432 | |
136f8f67 | 2433 | )))))) |
59ca07b5 RS |
2434 | |
2435 | (defun initialize-completions () | |
a7a2b1f6 | 2436 | "Load the default completions file. |
c2ced5d8 | 2437 | Also sets up so that exiting emacs will automatically save the file." |
59ca07b5 RS |
2438 | (interactive) |
2439 | (cond ((not cmpl-initialized-p) | |
2440 | (load-completions-from-file) | |
2441 | )) | |
59ca07b5 RS |
2442 | (setq cmpl-initialized-p t) |
2443 | ) | |
2444 | ||
2445 | ||
b578f267 EN |
2446 | ;;----------------------------------------------- |
2447 | ;; Kill EMACS patch | |
2448 | ;;----------------------------------------------- | |
59ca07b5 | 2449 | |
a7a2b1f6 RS |
2450 | (add-hook 'kill-emacs-hook |
2451 | '(lambda () | |
2452 | (kill-emacs-save-completions) | |
2453 | (cmpl-statistics-block | |
2454 | (record-cmpl-kill-emacs)))) | |
59ca07b5 | 2455 | \f |
b578f267 EN |
2456 | ;;----------------------------------------------- |
2457 | ;; Kill region patch | |
2458 | ;;----------------------------------------------- | |
59ca07b5 | 2459 | |
a7a2b1f6 | 2460 | (defun completion-kill-region (&optional beg end) |
59ca07b5 RS |
2461 | "Kill between point and mark. |
2462 | The text is deleted but saved in the kill ring. | |
2463 | The command \\[yank] can retrieve it from there. | |
2464 | /(If you want to kill and then yank immediately, use \\[copy-region-as-kill].) | |
2465 | ||
2466 | This is the primitive for programs to kill text (as opposed to deleting it). | |
2467 | Supply two arguments, character numbers indicating the stretch of text | |
2468 | to be killed. | |
2469 | Any command that calls this function is a \"kill command\". | |
2470 | If the previous command was also a kill command, | |
2471 | the text killed this time appends to the text killed last time | |
2472 | to make one entry in the kill ring. | |
2473 | Patched to remove the most recent completion." | |
a7a2b1f6 RS |
2474 | (interactive "r") |
2475 | (cond ((eq last-command 'complete) | |
59ca07b5 RS |
2476 | (delete-region (point) cmpl-last-insert-location) |
2477 | (insert cmpl-original-string) | |
2478 | (setq completion-to-accept nil) | |
2479 | (cmpl-statistics-block | |
a7a2b1f6 | 2480 | (record-complete-failed))) |
59ca07b5 | 2481 | (t |
a7a2b1f6 | 2482 | (kill-region beg end)))) |
59ca07b5 | 2483 | |
a7a2b1f6 RS |
2484 | (global-set-key "\C-w" 'completion-kill-region) |
2485 | \f | |
b578f267 EN |
2486 | ;;----------------------------------------------- |
2487 | ;; Patches to self-insert-command. | |
2488 | ;;----------------------------------------------- | |
59ca07b5 | 2489 | |
b578f267 EN |
2490 | ;; Need 2 versions: generic separator chars. and space (to get auto fill |
2491 | ;; to work) | |
59ca07b5 | 2492 | |
b578f267 EN |
2493 | ;; All common separators (eg. space "(" ")" """) characters go through a |
2494 | ;; function to add new words to the list of words to complete from: | |
2495 | ;; COMPLETION-SEPARATOR-SELF-INSERT-COMMAND (arg). | |
2496 | ;; If the character before this was an alpha-numeric then this adds the | |
2497 | ;; symbol before point to the completion list (using ADD-COMPLETION). | |
59ca07b5 RS |
2498 | |
2499 | (defun completion-separator-self-insert-command (arg) | |
2500 | (interactive "p") | |
2501 | (use-completion-before-separator) | |
2502 | (self-insert-command arg) | |
2503 | ) | |
2504 | ||
2505 | (defun completion-separator-self-insert-autofilling (arg) | |
2506 | (interactive "p") | |
2507 | (use-completion-before-separator) | |
2508 | (self-insert-command arg) | |
a7263218 | 2509 | (and auto-fill-function |
e5d77022 | 2510 | (funcall auto-fill-function)) |
59ca07b5 RS |
2511 | ) |
2512 | ||
b578f267 EN |
2513 | ;;----------------------------------------------- |
2514 | ;; Wrapping Macro | |
2515 | ;;----------------------------------------------- | |
59ca07b5 | 2516 | |
b578f267 EN |
2517 | ;; Note that because of the way byte compiling works, none of |
2518 | ;; the functions defined with this macro get byte compiled. | |
59ca07b5 RS |
2519 | |
2520 | (defmacro def-completion-wrapper (function-name type &optional new-name) | |
c2ced5d8 CZ |
2521 | "Add a call to update the completion database before function execution. |
2522 | TYPE is the type of the wrapper to be added. Can be :before or :under." | |
a7a2b1f6 RS |
2523 | (cond ((eq type ':separator) |
2524 | (list 'put (list 'quote function-name) ''completion-function | |
2525 | ''use-completion-before-separator)) | |
2526 | ((eq type ':before) | |
2527 | (list 'put (list 'quote function-name) ''completion-function | |
2528 | ''use-completion-before-point)) | |
2529 | ((eq type ':backward-under) | |
2530 | (list 'put (list 'quote function-name) ''completion-function | |
2531 | ''use-completion-backward-under)) | |
2532 | ((eq type ':backward) | |
2533 | (list 'put (list 'quote function-name) ''completion-function | |
2534 | ''use-completion-backward)) | |
2535 | ((eq type ':under) | |
2536 | (list 'put (list 'quote function-name) ''completion-function | |
2537 | ''use-completion-under-point)) | |
2538 | ((eq type ':under-or-before) | |
2539 | (list 'put (list 'quote function-name) ''completion-function | |
2540 | ''use-completion-under-or-before-point)) | |
2541 | ((eq type ':minibuffer-separator) | |
2542 | (list 'put (list 'quote function-name) ''completion-function | |
2543 | ''use-completion-minibuffer-separator)))) | |
2544 | ||
2545 | (defun use-completion-minibuffer-separator () | |
2546 | (let ((cmpl-syntax-table cmpl-standard-syntax-table)) | |
2547 | (use-completion-before-separator))) | |
2548 | ||
2549 | (defun use-completion-backward-under () | |
2550 | (use-completion-under-point) | |
2551 | (if (eq last-command 'complete) | |
2552 | ;; probably a failed completion if you have to back up | |
2553 | (cmpl-statistics-block (record-complete-failed)))) | |
2554 | ||
2555 | (defun use-completion-backward () | |
2556 | (if (eq last-command 'complete) | |
2557 | ;; probably a failed completion if you have to back up | |
2558 | (cmpl-statistics-block (record-complete-failed)))) | |
2559 | ||
2560 | (defun completion-before-command () | |
76e91049 RS |
2561 | (funcall (or (and (symbolp this-command) |
2562 | (get this-command 'completion-function)) | |
a7a2b1f6 | 2563 | 'use-completion-under-or-before-point))) |
649ddbf5 | 2564 | (add-hook 'pre-command-hook 'completion-before-command) |
59ca07b5 RS |
2565 | |
2566 | ||
b578f267 EN |
2567 | ;;--------------------------------------------------------------------------- |
2568 | ;; Patches to standard keymaps insert completions | |
2569 | ;;--------------------------------------------------------------------------- | |
59ca07b5 | 2570 | |
b578f267 EN |
2571 | ;;----------------------------------------------- |
2572 | ;; Separators | |
2573 | ;;----------------------------------------------- | |
2574 | ;; We've used the completion syntax table given as a guide. | |
2575 | ;; | |
2576 | ;; Global separator chars. | |
2577 | ;; We left out <tab> because there are too many special cases for it. Also, | |
2578 | ;; in normal coding it's rarely typed after a word. | |
59ca07b5 RS |
2579 | (global-set-key " " 'completion-separator-self-insert-autofilling) |
2580 | (global-set-key "!" 'completion-separator-self-insert-command) | |
2581 | (global-set-key "%" 'completion-separator-self-insert-command) | |
2582 | (global-set-key "^" 'completion-separator-self-insert-command) | |
2583 | (global-set-key "&" 'completion-separator-self-insert-command) | |
2584 | (global-set-key "(" 'completion-separator-self-insert-command) | |
2585 | (global-set-key ")" 'completion-separator-self-insert-command) | |
2586 | (global-set-key "=" 'completion-separator-self-insert-command) | |
2587 | (global-set-key "`" 'completion-separator-self-insert-command) | |
2588 | (global-set-key "|" 'completion-separator-self-insert-command) | |
2589 | (global-set-key "{" 'completion-separator-self-insert-command) | |
2590 | (global-set-key "}" 'completion-separator-self-insert-command) | |
2591 | (global-set-key "[" 'completion-separator-self-insert-command) | |
2592 | (global-set-key "]" 'completion-separator-self-insert-command) | |
2593 | (global-set-key ";" 'completion-separator-self-insert-command) | |
2594 | (global-set-key "\"" 'completion-separator-self-insert-command) | |
2595 | (global-set-key "'" 'completion-separator-self-insert-command) | |
2596 | (global-set-key "#" 'completion-separator-self-insert-command) | |
2597 | (global-set-key "," 'completion-separator-self-insert-command) | |
2598 | (global-set-key "?" 'completion-separator-self-insert-command) | |
2599 | ||
b578f267 EN |
2600 | ;; We include period and colon even though they are symbol chars because : |
2601 | ;; - in text we want to pick up the last word in a sentence. | |
2602 | ;; - in C pointer refs. we want to pick up the first symbol | |
2603 | ;; - it won't make a difference for lisp mode (package names are short) | |
59ca07b5 RS |
2604 | (global-set-key "." 'completion-separator-self-insert-command) |
2605 | (global-set-key ":" 'completion-separator-self-insert-command) | |
2606 | ||
b578f267 | 2607 | ;; Lisp Mode diffs |
59ca07b5 RS |
2608 | (define-key lisp-mode-map "!" 'self-insert-command) |
2609 | (define-key lisp-mode-map "&" 'self-insert-command) | |
2610 | (define-key lisp-mode-map "%" 'self-insert-command) | |
2611 | (define-key lisp-mode-map "?" 'self-insert-command) | |
2612 | (define-key lisp-mode-map "=" 'self-insert-command) | |
2613 | (define-key lisp-mode-map "^" 'self-insert-command) | |
2614 | ||
b578f267 | 2615 | ;; C mode diffs. |
32168d16 RS |
2616 | (defun completion-c-mode-hook () |
2617 | (def-completion-wrapper electric-c-semi :separator) | |
2618 | (define-key c-mode-map "+" 'completion-separator-self-insert-command) | |
2619 | (define-key c-mode-map "*" 'completion-separator-self-insert-command) | |
2620 | (define-key c-mode-map "/" 'completion-separator-self-insert-command)) | |
2621 | ;; Do this either now or whenever C mode is loaded. | |
2622 | (if (featurep 'cc-mode) | |
2623 | (completion-c-mode-hook) | |
2624 | (add-hook 'c-mode-hook 'completion-c-mode-hook)) | |
59ca07b5 | 2625 | |
b578f267 | 2626 | ;; FORTRAN mode diffs. (these are defined when fortran is called) |
59ca07b5 RS |
2627 | (defun completion-setup-fortran-mode () |
2628 | (define-key fortran-mode-map "+" 'completion-separator-self-insert-command) | |
2629 | (define-key fortran-mode-map "-" 'completion-separator-self-insert-command) | |
2630 | (define-key fortran-mode-map "*" 'completion-separator-self-insert-command) | |
2631 | (define-key fortran-mode-map "/" 'completion-separator-self-insert-command) | |
2632 | ) | |
2633 | ||
b578f267 EN |
2634 | ;;----------------------------------------------- |
2635 | ;; End of line chars. | |
2636 | ;;----------------------------------------------- | |
59ca07b5 RS |
2637 | (def-completion-wrapper newline :separator) |
2638 | (def-completion-wrapper newline-and-indent :separator) | |
27c26a08 | 2639 | (def-completion-wrapper comint-send-input :separator) |
59ca07b5 RS |
2640 | (def-completion-wrapper exit-minibuffer :minibuffer-separator) |
2641 | (def-completion-wrapper eval-print-last-sexp :separator) | |
2642 | (def-completion-wrapper eval-last-sexp :separator) | |
2643 | ;;(def-completion-wrapper minibuffer-complete-and-exit :minibuffer) | |
2644 | ||
b578f267 EN |
2645 | ;;----------------------------------------------- |
2646 | ;; Cursor movement | |
2647 | ;;----------------------------------------------- | |
59ca07b5 RS |
2648 | |
2649 | (def-completion-wrapper next-line :under-or-before) | |
2650 | (def-completion-wrapper previous-line :under-or-before) | |
2651 | (def-completion-wrapper beginning-of-buffer :under-or-before) | |
2652 | (def-completion-wrapper end-of-buffer :under-or-before) | |
a7a2b1f6 RS |
2653 | (def-completion-wrapper beginning-of-line :under-or-before) |
2654 | (def-completion-wrapper end-of-line :under-or-before) | |
2655 | (def-completion-wrapper forward-char :under-or-before) | |
2656 | (def-completion-wrapper forward-word :under-or-before) | |
2657 | (def-completion-wrapper forward-sexp :under-or-before) | |
2658 | (def-completion-wrapper backward-char :backward-under) | |
2659 | (def-completion-wrapper backward-word :backward-under) | |
2660 | (def-completion-wrapper backward-sexp :backward-under) | |
2661 | ||
2662 | (def-completion-wrapper delete-backward-char :backward) | |
2663 | (def-completion-wrapper delete-backward-char-untabify :backward) | |
59ca07b5 | 2664 | |
b578f267 EN |
2665 | ;; Tests -- |
2666 | ;; foobarbiz | |
2667 | ;; foobar | |
2668 | ;; fooquux | |
2669 | ;; fooper | |
59ca07b5 RS |
2670 | |
2671 | (cmpl-statistics-block | |
2672 | (record-completion-file-loaded)) | |
c0274f38 ER |
2673 | |
2674 | ;;; completion.el ends here |