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876f2438 SM |
1 | ;;; font-lock.el --- Electric font lock mode |
2 | ||
f9261020 | 3 | ;; Copyright (C) 1992, 93, 94, 95, 96, 97, 98, 1999, 2000, 2001 |
01b69148 | 4 | ;; Free Software Foundation, Inc. |
030f4a35 | 5 | |
0279f991 | 6 | ;; Author: jwz, then rms, then sm |
030f4a35 RS |
7 | ;; Maintainer: FSF |
8 | ;; Keywords: languages, faces | |
9 | ||
10 | ;; This file is part of GNU Emacs. | |
11 | ||
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. | |
030f4a35 | 26 | |
030f4a35 RS |
27 | ;;; Commentary: |
28 | ||
b89e1134 SM |
29 | ;; Font Lock mode is a minor mode that causes your comments to be displayed in |
30 | ;; one face, strings in another, reserved words in another, and so on. | |
030f4a35 RS |
31 | ;; |
32 | ;; Comments will be displayed in `font-lock-comment-face'. | |
33 | ;; Strings will be displayed in `font-lock-string-face'. | |
a1eb1cf1 | 34 | ;; Regexps are used to display selected patterns in other faces. |
030f4a35 | 35 | ;; |
9bfbb130 SM |
36 | ;; To make the text you type be fontified, use M-x font-lock-mode RET. |
37 | ;; When this minor mode is on, the faces of the current line are updated with | |
38 | ;; every insertion or deletion. | |
030f4a35 | 39 | ;; |
a2b8e66b | 40 | ;; To turn Font Lock mode on automatically, add this to your ~/.emacs file: |
030f4a35 | 41 | ;; |
b89e1134 | 42 | ;; (add-hook 'emacs-lisp-mode-hook 'turn-on-font-lock) |
030f4a35 | 43 | ;; |
a2b8e66b SM |
44 | ;; Or if you want to turn Font Lock mode on in many modes: |
45 | ;; | |
46 | ;; (global-font-lock-mode t) | |
47 | ;; | |
9bfbb130 SM |
48 | ;; Fontification for a particular mode may be available in a number of levels |
49 | ;; of decoration. The higher the level, the more decoration, but the more time | |
50 | ;; it takes to fontify. See the variable `font-lock-maximum-decoration', and | |
5aa29679 RS |
51 | ;; also the variable `font-lock-maximum-size'. Support modes for Font Lock |
52 | ;; mode can be used to speed up Font Lock mode. See `font-lock-support-mode'. | |
98f84f52 | 53 | \f |
56fcbd7e SM |
54 | ;;; How Font Lock mode fontifies: |
55 | ||
56 | ;; When Font Lock mode is turned on in a buffer, it (a) fontifies the entire | |
57 | ;; buffer and (b) installs one of its fontification functions on one of the | |
58 | ;; hook variables that are run by Emacs after every buffer change (i.e., an | |
59 | ;; insertion or deletion). Fontification means the replacement of `face' text | |
60 | ;; properties in a given region; Emacs displays text with these `face' text | |
61 | ;; properties appropriately. | |
62 | ;; | |
63 | ;; Fontification normally involves syntactic (i.e., strings and comments) and | |
ac6e572c SM |
64 | ;; regexp (i.e., keywords and everything else) passes. There are actually |
65 | ;; three passes; (a) the syntactic keyword pass, (b) the syntactic pass and (c) | |
66 | ;; the keyword pass. Confused? | |
67 | ;; | |
68 | ;; The syntactic keyword pass places `syntax-table' text properties in the | |
69 | ;; buffer according to the variable `font-lock-syntactic-keywords'. It is | |
70 | ;; necessary because Emacs' syntax table is not powerful enough to describe all | |
71 | ;; the different syntactic constructs required by the sort of people who decide | |
72 | ;; that a single quote can be syntactic or not depending on the time of day. | |
73 | ;; (What sort of person could decide to overload the meaning of a quote?) | |
74 | ;; Obviously the syntactic keyword pass must occur before the syntactic pass. | |
75 | ;; | |
76 | ;; The syntactic pass places `face' text properties in the buffer according to | |
77 | ;; syntactic context, i.e., according to the buffer's syntax table and buffer | |
78 | ;; text's `syntax-table' text properties. It involves using a syntax parsing | |
79 | ;; function to determine the context of different parts of a region of text. A | |
80 | ;; syntax parsing function is necessary because generally strings and/or | |
81 | ;; comments can span lines, and so the context of a given region is not | |
82 | ;; necessarily apparent from the content of that region. Because the keyword | |
83 | ;; pass only works within a given region, it is not generally appropriate for | |
84 | ;; syntactic fontification. This is the first fontification pass that makes | |
85 | ;; changes visible to the user; it fontifies strings and comments. | |
86 | ;; | |
87 | ;; The keyword pass places `face' text properties in the buffer according to | |
88 | ;; the variable `font-lock-keywords'. It involves searching for given regexps | |
89 | ;; (or calling given search functions) within the given region. This is the | |
90 | ;; second fontification pass that makes changes visible to the user; it | |
91 | ;; fontifies language reserved words, etc. | |
92 | ;; | |
93 | ;; Oh, and the answer is, "Yes, obviously just about everything should be done | |
94 | ;; in a single syntactic pass, but the only syntactic parser available | |
95 | ;; understands only strings and comments." Perhaps one day someone will write | |
96 | ;; some syntactic parsers for common languages and a son-of-font-lock.el could | |
97 | ;; use them rather then relying so heavily on the keyword (regexp) pass. | |
56fcbd7e | 98 | |
c1f2ffc8 SM |
99 | ;;; How Font Lock mode supports modes or is supported by modes: |
100 | ||
101 | ;; Modes that support Font Lock mode do so by defining one or more variables | |
102 | ;; whose values specify the fontification. Font Lock mode knows of these | |
103 | ;; variable names from (a) the buffer local variable `font-lock-defaults', if | |
104 | ;; non-nil, or (b) the global variable `font-lock-defaults-alist', if the major | |
105 | ;; mode has an entry. (Font Lock mode is set up via (a) where a mode's | |
106 | ;; patterns are distributed with the mode's package library, and (b) where a | |
107 | ;; mode's patterns are distributed with font-lock.el itself. An example of (a) | |
108 | ;; is Pascal mode, an example of (b) is Lisp mode. Normally, the mechanism is | |
109 | ;; (a); (b) is used where it is not clear which package library should contain | |
110 | ;; the pattern definitions.) Font Lock mode chooses which variable to use for | |
111 | ;; fontification based on `font-lock-maximum-decoration'. | |
56fcbd7e SM |
112 | ;; |
113 | ;; Font Lock mode fontification behaviour can be modified in a number of ways. | |
114 | ;; See the below comments and the comments distributed throughout this file. | |
c1f2ffc8 SM |
115 | |
116 | ;;; Constructing patterns: | |
117 | ||
98f84f52 SM |
118 | ;; See the documentation for the variable `font-lock-keywords'. |
119 | ;; | |
ac6e572c SM |
120 | ;; Efficient regexps for use as MATCHERs for `font-lock-keywords' and |
121 | ;; `font-lock-syntactic-keywords' can be generated via the function | |
afa18a4e | 122 | ;; `regexp-opt'. |
98f84f52 | 123 | |
c1f2ffc8 SM |
124 | ;;; Adding patterns for modes that already support Font Lock: |
125 | ||
126 | ;; Though Font Lock highlighting patterns already exist for many modes, it's | |
127 | ;; likely there's something that you want fontified that currently isn't, even | |
128 | ;; at the maximum fontification level. You can add highlighting patterns via | |
129 | ;; `font-lock-add-keywords'. For example, say in some C | |
130 | ;; header file you #define the token `and' to expand to `&&', etc., to make | |
131 | ;; your C code almost readable. In your ~/.emacs there could be: | |
98f84f52 | 132 | ;; |
c1f2ffc8 | 133 | ;; (font-lock-add-keywords 'c-mode '("\\<\\(and\\|or\\|not\\)\\>")) |
98f84f52 | 134 | ;; |
c1f2ffc8 SM |
135 | ;; Some modes provide specific ways to modify patterns based on the values of |
136 | ;; other variables. For example, additional C types can be specified via the | |
137 | ;; variable `c-font-lock-extra-types'. | |
138 | ||
139 | ;;; Adding patterns for modes that do not support Font Lock: | |
140 | ||
141 | ;; Not all modes support Font Lock mode. If you (as a user of the mode) add | |
142 | ;; patterns for a new mode, you must define in your ~/.emacs a variable or | |
143 | ;; variables that specify regexp fontification. Then, you should indicate to | |
144 | ;; Font Lock mode, via the mode hook setting `font-lock-defaults', exactly what | |
145 | ;; support is required. For example, say Foo mode should have the following | |
146 | ;; regexps fontified case-sensitively, and comments and strings should not be | |
147 | ;; fontified automagically. In your ~/.emacs there could be: | |
98f84f52 | 148 | ;; |
c1f2ffc8 SM |
149 | ;; (defvar foo-font-lock-keywords |
150 | ;; '(("\\<\\(one\\|two\\|three\\)\\>" . font-lock-keyword-face) | |
151 | ;; ("\\<\\(four\\|five\\|six\\)\\>" . font-lock-type-face)) | |
152 | ;; "Default expressions to highlight in Foo mode.") | |
98f84f52 | 153 | ;; |
c1f2ffc8 SM |
154 | ;; (add-hook 'foo-mode-hook |
155 | ;; (function (lambda () | |
156 | ;; (make-local-variable 'font-lock-defaults) | |
157 | ;; (setq font-lock-defaults '(foo-font-lock-keywords t))))) | |
158 | ||
159 | ;;; Adding Font Lock support for modes: | |
160 | ||
161 | ;; Of course, it would be better that the mode already supports Font Lock mode. | |
162 | ;; The package author would do something similar to above. The mode must | |
163 | ;; define at the top-level a variable or variables that specify regexp | |
164 | ;; fontification. Then, the mode command should indicate to Font Lock mode, | |
165 | ;; via `font-lock-defaults', exactly what support is required. For example, | |
166 | ;; say Bar mode should have the following regexps fontified case-insensitively, | |
167 | ;; and comments and strings should be fontified automagically. In bar.el there | |
168 | ;; could be: | |
98f84f52 | 169 | ;; |
c1f2ffc8 SM |
170 | ;; (defvar bar-font-lock-keywords |
171 | ;; '(("\\<\\(uno\\|due\\|tre\\)\\>" . font-lock-keyword-face) | |
172 | ;; ("\\<\\(quattro\\|cinque\\|sei\\)\\>" . font-lock-type-face)) | |
173 | ;; "Default expressions to highlight in Bar mode.") | |
98f84f52 | 174 | ;; |
c1f2ffc8 | 175 | ;; and within `bar-mode' there could be: |
98f84f52 | 176 | ;; |
c1f2ffc8 SM |
177 | ;; (make-local-variable 'font-lock-defaults) |
178 | ;; (setq font-lock-defaults '(bar-font-lock-keywords nil t)) | |
98f84f52 | 179 | \f |
9bfbb130 SM |
180 | ;; What is fontification for? You might say, "It's to make my code look nice." |
181 | ;; I think it should be for adding information in the form of cues. These cues | |
182 | ;; should provide you with enough information to both (a) distinguish between | |
183 | ;; different items, and (b) identify the item meanings, without having to read | |
184 | ;; the items and think about it. Therefore, fontification allows you to think | |
185 | ;; less about, say, the structure of code, and more about, say, why the code | |
186 | ;; doesn't work. Or maybe it allows you to think less and drift off to sleep. | |
187 | ;; | |
188 | ;; So, here are my opinions/advice/guidelines: | |
5e9e032a | 189 | ;; |
7d7d915a SM |
190 | ;; - Highlight conceptual objects, such as function and variable names, and |
191 | ;; different objects types differently, i.e., (a) and (b) above, highlight | |
192 | ;; function names differently to variable names. | |
193 | ;; - Keep the faces distinct from each other as far as possible. | |
194 | ;; i.e., (a) above. | |
9bfbb130 SM |
195 | ;; - Use the same face for the same conceptual object, across all modes. |
196 | ;; i.e., (b) above, all modes that have items that can be thought of as, say, | |
197 | ;; keywords, should be highlighted with the same face, etc. | |
9bfbb130 SM |
198 | ;; - Make the face attributes fit the concept as far as possible. |
199 | ;; i.e., function names might be a bold colour such as blue, comments might | |
200 | ;; be a bright colour such as red, character strings might be brown, because, | |
201 | ;; err, strings are brown (that was not the reason, please believe me). | |
202 | ;; - Don't use a non-nil OVERRIDE unless you have a good reason. | |
203 | ;; Only use OVERRIDE for special things that are easy to define, such as the | |
204 | ;; way `...' quotes are treated in strings and comments in Emacs Lisp mode. | |
205 | ;; Don't use it to, say, highlight keywords in commented out code or strings. | |
206 | ;; - Err, that's it. | |
a1eb1cf1 | 207 | \f |
2e6a15fc SM |
208 | ;;; Code: |
209 | ||
2273c36b | 210 | ;; Define core `font-lock' group. |
55015061 SM |
211 | (defgroup font-lock nil |
212 | "Font Lock mode text highlighting package." | |
213 | :link '(custom-manual "(emacs)Font Lock") | |
63e20d60 | 214 | :link '(custom-manual "(elisp)Font Lock Mode") |
55015061 SM |
215 | :group 'faces) |
216 | ||
2273c36b SM |
217 | (defgroup font-lock-highlighting-faces nil |
218 | "Faces for highlighting text." | |
55015061 | 219 | :prefix "font-lock-" |
2273c36b SM |
220 | :group 'font-lock) |
221 | ||
222 | (defgroup font-lock-extra-types nil | |
223 | "Extra mode-specific type names for highlighting declarations." | |
224 | :group 'font-lock) | |
225 | ||
ac6e572c | 226 | ;; Define support mode groups here to impose `font-lock' group order. |
2273c36b SM |
227 | (defgroup fast-lock nil |
228 | "Font Lock support mode to cache fontification." | |
229 | :link '(custom-manual "(emacs)Support Modes") | |
230 | :load 'fast-lock | |
231 | :group 'font-lock) | |
232 | ||
233 | (defgroup lazy-lock nil | |
234 | "Font Lock support mode to fontify lazily." | |
235 | :link '(custom-manual "(emacs)Support Modes") | |
236 | :load 'lazy-lock | |
55015061 | 237 | :group 'font-lock) |
e7f07c2c GM |
238 | |
239 | (defgroup jit-lock nil | |
240 | "Font Lock support mode to fontify just-in-time." | |
241 | :link '(custom-manual "(emacs)Support Modes") | |
63e20d60 | 242 | :version "21.1" |
faa57c0a | 243 | :load 'jit-lock |
e7f07c2c | 244 | :group 'font-lock) |
55015061 | 245 | \f |
9bfbb130 SM |
246 | ;; User variables. |
247 | ||
4fffc071 | 248 | (defcustom font-lock-maximum-size 256000 |
23a0e11b SM |
249 | "*Maximum size of a buffer for buffer fontification. |
250 | Only buffers less than this can be fontified when Font Lock mode is turned on. | |
251 | If nil, means size is irrelevant. | |
252 | If a list, each element should be a cons pair of the form (MAJOR-MODE . SIZE), | |
253 | where MAJOR-MODE is a symbol or t (meaning the default). For example: | |
254 | ((c-mode . 256000) (c++-mode . 256000) (rmail-mode . 1048576)) | |
255 | means that the maximum size is 250K for buffers in C or C++ modes, one megabyte | |
256 | for buffers in Rmail mode, and size is irrelevant otherwise." | |
257 | :type '(choice (const :tag "none" nil) | |
258 | (integer :tag "size") | |
259 | (repeat :menu-tag "mode specific" :tag "mode specific" | |
260 | :value ((t . nil)) | |
261 | (cons :tag "Instance" | |
262 | (radio :tag "Mode" | |
263 | (const :tag "all" t) | |
264 | (symbol :tag "name")) | |
265 | (radio :tag "Size" | |
266 | (const :tag "none" nil) | |
267 | (integer :tag "size"))))) | |
55015061 | 268 | :group 'font-lock) |
9bfbb130 | 269 | |
55015061 | 270 | (defcustom font-lock-maximum-decoration t |
2d9cdda8 | 271 | "*Maximum decoration level for fontification. |
9bfbb130 SM |
272 | If nil, use the default decoration (typically the minimum available). |
273 | If t, use the maximum decoration available. | |
274 | If a number, use that level of decoration (or if not available the maximum). | |
275 | If a list, each element should be a cons pair of the form (MAJOR-MODE . LEVEL), | |
276 | where MAJOR-MODE is a symbol or t (meaning the default). For example: | |
5aa29679 RS |
277 | ((c-mode . t) (c++-mode . 2) (t . 1)) |
278 | means use the maximum decoration available for buffers in C mode, level 2 | |
55015061 | 279 | decoration for buffers in C++ mode, and level 1 decoration otherwise." |
b34aa0a3 SM |
280 | :type '(choice (const :tag "default" nil) |
281 | (const :tag "maximum" t) | |
282 | (integer :tag "level" 1) | |
283 | (repeat :menu-tag "mode specific" :tag "mode specific" | |
284 | :value ((t . t)) | |
285 | (cons :tag "Instance" | |
286 | (radio :tag "Mode" | |
287 | (const :tag "all" t) | |
288 | (symbol :tag "name")) | |
289 | (radio :tag "Decoration" | |
290 | (const :tag "default" nil) | |
019f00d8 | 291 | (const :tag "maximum" t) |
b34aa0a3 | 292 | (integer :tag "level" 1))))) |
55015061 SM |
293 | :group 'font-lock) |
294 | ||
4fffc071 | 295 | (defcustom font-lock-verbose 0 |
23a0e11b SM |
296 | "*If non-nil, means show status messages for buffer fontification. |
297 | If a number, only buffers greater than this size have fontification messages." | |
298 | :type '(choice (const :tag "never" nil) | |
4fffc071 SM |
299 | (other :tag "always" t) |
300 | (integer :tag "size")) | |
55015061 | 301 | :group 'font-lock) |
9bfbb130 | 302 | \f |
1c172af4 SM |
303 | |
304 | ;; Originally these variable values were face names such as `bold' etc. | |
305 | ;; Now we create our own faces, but we keep these variables for compatibility | |
306 | ;; and they give users another mechanism for changing face appearance. | |
307 | ;; We now allow a FACENAME in `font-lock-keywords' to be any expression that | |
308 | ;; returns a face. So the easiest thing is to continue using these variables, | |
309 | ;; rather than sometimes evaling FACENAME and sometimes not. sm. | |
310 | (defvar font-lock-comment-face 'font-lock-comment-face | |
311 | "Face name to use for comments.") | |
312 | ||
313 | (defvar font-lock-string-face 'font-lock-string-face | |
314 | "Face name to use for strings.") | |
315 | ||
316 | (defvar font-lock-doc-face 'font-lock-doc-face | |
317 | "Face name to use for documentation.") | |
318 | ||
319 | (defvar font-lock-keyword-face 'font-lock-keyword-face | |
320 | "Face name to use for keywords.") | |
321 | ||
322 | (defvar font-lock-builtin-face 'font-lock-builtin-face | |
323 | "Face name to use for builtins.") | |
324 | ||
325 | (defvar font-lock-function-name-face 'font-lock-function-name-face | |
326 | "Face name to use for function names.") | |
327 | ||
328 | (defvar font-lock-variable-name-face 'font-lock-variable-name-face | |
329 | "Face name to use for variable names.") | |
330 | ||
331 | (defvar font-lock-type-face 'font-lock-type-face | |
332 | "Face name to use for type and class names.") | |
333 | ||
334 | (defvar font-lock-constant-face 'font-lock-constant-face | |
335 | "Face name to use for constant and label names.") | |
336 | ||
337 | (defvar font-lock-warning-face 'font-lock-warning-face | |
338 | "Face name to use for things that should stand out.") | |
339 | ||
340 | (defvar font-lock-reference-face 'font-lock-constant-face | |
341 | "This variable is obsolete. Use `font-lock-constant-face'.") | |
342 | ||
9bfbb130 SM |
343 | ;; Fontification variables: |
344 | ||
030f4a35 | 345 | (defvar font-lock-keywords nil |
ac6e572c | 346 | "A list of the keywords to highlight. |
caf0dd71 | 347 | Each element should have one of these forms: |
a1eb1cf1 | 348 | |
826b2925 SM |
349 | MATCHER |
350 | (MATCHER . MATCH) | |
351 | (MATCHER . FACENAME) | |
352 | (MATCHER . HIGHLIGHT) | |
353 | (MATCHER HIGHLIGHT ...) | |
a078558d | 354 | (eval . FORM) |
a1eb1cf1 | 355 | |
9bfbb130 SM |
356 | where HIGHLIGHT should be either MATCH-HIGHLIGHT or MATCH-ANCHORED. |
357 | ||
a078558d SM |
358 | FORM is an expression, whose value should be a keyword element, evaluated when |
359 | the keyword is (first) used in a buffer. This feature can be used to provide a | |
360 | keyword that can only be generated when Font Lock mode is actually turned on. | |
361 | ||
9c8de95c SM |
362 | For highlighting single items, for example each instance of the word \"foo\", |
363 | typically only MATCH-HIGHLIGHT is required. | |
d9f7b2d3 | 364 | However, if an item or (typically) items are to be highlighted following the |
9c8de95c SM |
365 | instance of another item (the anchor), for example each instance of the |
366 | word \"bar\" following the word \"anchor\" then MATCH-ANCHORED may be required. | |
9bfbb130 SM |
367 | |
368 | MATCH-HIGHLIGHT should be of the form: | |
369 | ||
370 | (MATCH FACENAME OVERRIDE LAXMATCH) | |
371 | ||
caf0dd71 | 372 | where MATCHER can be either the regexp to search for, or the function name to |
844a6a46 SM |
373 | call to make the search (called with one argument, the limit of the search) and |
374 | return non-nil if it succeeds (and set `match-data' appropriately). | |
afa18a4e SM |
375 | MATCHER regexps can be generated via the function `regexp-opt'. MATCH is |
376 | the subexpression of MATCHER to be highlighted. FACENAME is an expression | |
377 | whose value is the face name to use. Face default attributes can be | |
378 | modified via \\[customize]. | |
a1eb1cf1 | 379 | |
2d63aa67 | 380 | OVERRIDE and LAXMATCH are flags. If OVERRIDE is t, existing fontification can |
9bfbb130 SM |
381 | be overwritten. If `keep', only parts not already fontified are highlighted. |
382 | If `prepend' or `append', existing fontification is merged with the new, in | |
383 | which the new or existing fontification, respectively, takes precedence. | |
d9f7b2d3 | 384 | If LAXMATCH is non-nil, no error is signaled if there is no MATCH in MATCHER. |
a1eb1cf1 | 385 | |
9bfbb130 SM |
386 | For example, an element of the form highlights (if not already highlighted): |
387 | ||
9c8de95c | 388 | \"\\\\\\=<foo\\\\\\=>\" discrete occurrences of \"foo\" in the value of the |
876f2438 | 389 | variable `font-lock-keyword-face'. |
9c8de95c | 390 | (\"fu\\\\(bar\\\\)\" . 1) substring \"bar\" within all occurrences of \"fubar\" in |
9bfbb130 SM |
391 | the value of `font-lock-keyword-face'. |
392 | (\"fubar\" . fubar-face) Occurrences of \"fubar\" in the value of `fubar-face'. | |
393 | (\"foo\\\\|bar\" 0 foo-bar-face t) | |
9c8de95c | 394 | occurrences of either \"foo\" or \"bar\" in the value |
9bfbb130 | 395 | of `foo-bar-face', even if already highlighted. |
844a6a46 | 396 | (fubar-match 1 fubar-face) |
9c8de95c | 397 | the first subexpression within all occurrences of |
844a6a46 SM |
398 | whatever the function `fubar-match' finds and matches |
399 | in the value of `fubar-face'. | |
9bfbb130 SM |
400 | |
401 | MATCH-ANCHORED should be of the form: | |
402 | ||
403 | (MATCHER PRE-MATCH-FORM POST-MATCH-FORM MATCH-HIGHLIGHT ...) | |
404 | ||
9c8de95c SM |
405 | where MATCHER is a regexp to search for or the function name to call to make |
406 | the search, as for MATCH-HIGHLIGHT above, but with one exception; see below. | |
876f2438 SM |
407 | PRE-MATCH-FORM and POST-MATCH-FORM are evaluated before the first, and after |
408 | the last, instance MATCH-ANCHORED's MATCHER is used. Therefore they can be | |
409 | used to initialise before, and cleanup after, MATCHER is used. Typically, | |
410 | PRE-MATCH-FORM is used to move to some position relative to the original | |
411 | MATCHER, before starting with MATCH-ANCHORED's MATCHER. POST-MATCH-FORM might | |
412 | be used to move, before resuming with MATCH-ANCHORED's parent's MATCHER. | |
9bfbb130 SM |
413 | |
414 | For example, an element of the form highlights (if not already highlighted): | |
415 | ||
876f2438 | 416 | (\"\\\\\\=<anchor\\\\\\=>\" (0 anchor-face) (\"\\\\\\=<item\\\\\\=>\" nil nil (0 item-face))) |
9bfbb130 | 417 | |
9c8de95c | 418 | discrete occurrences of \"anchor\" in the value of `anchor-face', and subsequent |
876f2438 SM |
419 | discrete occurrences of \"item\" (on the same line) in the value of `item-face'. |
420 | (Here PRE-MATCH-FORM and POST-MATCH-FORM are nil. Therefore \"item\" is | |
421 | initially searched for starting from the end of the match of \"anchor\", and | |
422 | searching for subsequent instance of \"anchor\" resumes from where searching | |
423 | for \"item\" concluded.) | |
9bfbb130 | 424 | |
56fcbd7e SM |
425 | The above-mentioned exception is as follows. The limit of the MATCHER search |
426 | defaults to the end of the line after PRE-MATCH-FORM is evaluated. | |
427 | However, if PRE-MATCH-FORM returns a position greater than the position after | |
428 | PRE-MATCH-FORM is evaluated, that position is used as the limit of the search. | |
429 | It is generally a bad idea to return a position greater than the end of the | |
430 | line, i.e., cause the MATCHER search to span lines. | |
431 | ||
6e1d0d15 SM |
432 | These regular expressions can match text which spans lines, although |
433 | it is better to avoid it if possible since updating them while editing | |
434 | text is slower, and it is not guaranteed to be always correct when using | |
435 | support modes like jit-lock or lazy-lock. | |
a1eb1cf1 | 436 | |
2d63aa67 SM |
437 | This variable is set by major modes via the variable `font-lock-defaults'. |
438 | Be careful when composing regexps for this list; a poorly written pattern can | |
439 | dramatically slow things down!") | |
030f4a35 | 440 | |
2e6a15fc SM |
441 | ;; This variable is used by mode packages that support Font Lock mode by |
442 | ;; defining their own keywords to use for `font-lock-keywords'. (The mode | |
443 | ;; command should make it buffer-local and set it to provide the set up.) | |
b89e1134 | 444 | (defvar font-lock-defaults nil |
2d63aa67 SM |
445 | "Defaults for Font Lock mode specified by the major mode. |
446 | Defaults should be of the form: | |
447 | ||
448 | (KEYWORDS KEYWORDS-ONLY CASE-FOLD SYNTAX-ALIST SYNTAX-BEGIN ...) | |
449 | ||
450 | KEYWORDS may be a symbol (a variable or function whose value is the keywords to | |
451 | use for fontification) or a list of symbols. If KEYWORDS-ONLY is non-nil, | |
452 | syntactic fontification (strings and comments) is not performed. | |
453 | If CASE-FOLD is non-nil, the case of the keywords is ignored when fontifying. | |
454 | If SYNTAX-ALIST is non-nil, it should be a list of cons pairs of the form | |
455 | \(CHAR-OR-STRING . STRING) used to set the local Font Lock syntax table, for | |
456 | keyword and syntactic fontification (see `modify-syntax-entry'). | |
457 | ||
458 | If SYNTAX-BEGIN is non-nil, it should be a function with no args used to move | |
459 | backwards outside any enclosing syntactic block, for syntactic fontification. | |
460 | Typical values are `beginning-of-line' (i.e., the start of the line is known to | |
461 | be outside a syntactic block), or `beginning-of-defun' for programming modes or | |
462 | `backward-paragraph' for textual modes (i.e., the mode-dependent function is | |
463 | known to move outside a syntactic block). If nil, the beginning of the buffer | |
464 | is used as a position outside of a syntactic block, in the worst case. | |
465 | ||
466 | These item elements are used by Font Lock mode to set the variables | |
467 | `font-lock-keywords', `font-lock-keywords-only', | |
468 | `font-lock-keywords-case-fold-search', `font-lock-syntax-table' and | |
469 | `font-lock-beginning-of-syntax-function', respectively. | |
470 | ||
471 | Further item elements are alists of the form (VARIABLE . VALUE) and are in no | |
472 | particular order. Each VARIABLE is made buffer-local before set to VALUE. | |
473 | ||
474 | Currently, appropriate variables include `font-lock-mark-block-function'. | |
475 | If this is non-nil, it should be a function with no args used to mark any | |
476 | enclosing block of text, for fontification via \\[font-lock-fontify-block]. | |
477 | Typical values are `mark-defun' for programming modes or `mark-paragraph' for | |
478 | textual modes (i.e., the mode-dependent function is known to put point and mark | |
479 | around a text block relevant to that mode). | |
480 | ||
79f238c9 SM |
481 | Other variables include that for syntactic keyword fontification, |
482 | `font-lock-syntactic-keywords' | |
483 | and those for buffer-specialised fontification functions, | |
2d63aa67 SM |
484 | `font-lock-fontify-buffer-function', `font-lock-unfontify-buffer-function', |
485 | `font-lock-fontify-region-function', `font-lock-unfontify-region-function', | |
55015061 | 486 | `font-lock-inhibit-thing-lock' and `font-lock-maximum-size'.") |
fd612dd9 SM |
487 | ;;;###autoload |
488 | (make-variable-buffer-local 'font-lock-defaults) | |
b89e1134 | 489 | |
2e6a15fc | 490 | ;; This variable is used where font-lock.el itself supplies the keywords. |
b89e1134 | 491 | (defvar font-lock-defaults-alist |
2e6a15fc SM |
492 | (let (;; We use `beginning-of-defun', rather than nil, for SYNTAX-BEGIN. |
493 | ;; Thus the calculation of the cache is usually faster but not | |
494 | ;; infallible, so we risk mis-fontification. sm. | |
fb512de9 | 495 | (c-mode-defaults |
9bfbb130 SM |
496 | '((c-font-lock-keywords c-font-lock-keywords-1 |
497 | c-font-lock-keywords-2 c-font-lock-keywords-3) | |
a078558d SM |
498 | nil nil ((?_ . "w")) beginning-of-defun |
499 | (font-lock-mark-block-function . mark-defun))) | |
fb512de9 | 500 | (c++-mode-defaults |
019f00d8 | 501 | '((c++-font-lock-keywords c++-font-lock-keywords-1 |
9bfbb130 | 502 | c++-font-lock-keywords-2 c++-font-lock-keywords-3) |
55015061 | 503 | nil nil ((?_ . "w")) beginning-of-defun |
a078558d | 504 | (font-lock-mark-block-function . mark-defun))) |
2e6a15fc SM |
505 | (objc-mode-defaults |
506 | '((objc-font-lock-keywords objc-font-lock-keywords-1 | |
507 | objc-font-lock-keywords-2 objc-font-lock-keywords-3) | |
508 | nil nil ((?_ . "w") (?$ . "w")) nil | |
2e6a15fc SM |
509 | (font-lock-mark-block-function . mark-defun))) |
510 | (java-mode-defaults | |
511 | '((java-font-lock-keywords java-font-lock-keywords-1 | |
512 | java-font-lock-keywords-2 java-font-lock-keywords-3) | |
68c67d1f | 513 | nil nil ((?_ . "w") (?$ . "w")) nil |
2e6a15fc | 514 | (font-lock-mark-block-function . mark-defun))) |
fb512de9 | 515 | (lisp-mode-defaults |
9bfbb130 SM |
516 | '((lisp-font-lock-keywords |
517 | lisp-font-lock-keywords-1 lisp-font-lock-keywords-2) | |
5aa29679 | 518 | nil nil (("+-*/.<>=!?$%_&~^:" . "w")) beginning-of-defun |
28a53bc1 | 519 | (font-lock-mark-block-function . mark-defun)))) |
826b2925 | 520 | (list |
d46c21ec | 521 | (cons 'c-mode c-mode-defaults) |
2e6a15fc SM |
522 | (cons 'c++-mode c++-mode-defaults) |
523 | (cons 'objc-mode objc-mode-defaults) | |
524 | (cons 'java-mode java-mode-defaults) | |
d46c21ec | 525 | (cons 'emacs-lisp-mode lisp-mode-defaults) |
d46c21ec | 526 | (cons 'lisp-mode lisp-mode-defaults) |
28a53bc1 | 527 | (cons 'lisp-interaction-mode lisp-mode-defaults))) |
2d63aa67 | 528 | "Alist of fall-back Font Lock defaults for major modes. |
1c172af4 SM |
529 | |
530 | This variable should not be used any more. | |
531 | Set the buffer-local `font-lock-keywords' in the major mode instead. | |
532 | ||
b89e1134 | 533 | Each item should be a list of the form: |
d46c21ec | 534 | |
2d63aa67 | 535 | (MAJOR-MODE . FONT-LOCK-DEFAULTS) |
a2b8e66b | 536 | |
2d63aa67 SM |
537 | where MAJOR-MODE is a symbol and FONT-LOCK-DEFAULTS is a list of default |
538 | settings. See the variable `font-lock-defaults', which takes precedence.") | |
1c172af4 | 539 | (make-obsolete-variable 'font-lock-defaults-alist 'font-lock-defaults) |
d46c21ec | 540 | |
c1f2ffc8 SM |
541 | (defvar font-lock-keywords-alist nil |
542 | "*Alist of `font-lock-keywords' local to a `major-mode'. | |
76f5e2af GM |
543 | This is normally set via `font-lock-add-keywords' and |
544 | `font-lock-remove-keywords'.") | |
545 | ||
546 | (defvar font-lock-removed-keywords-alist nil | |
547 | "*Alist of `font-lock-keywords' removed from `major-mode'. | |
548 | This is normally set via `font-lock-add-keywords' and | |
549 | `font-lock-remove-keywords'.") | |
c1f2ffc8 | 550 | |
9bfbb130 | 551 | (defvar font-lock-keywords-only nil |
d46c21ec SM |
552 | "*Non-nil means Font Lock should not fontify comments or strings. |
553 | This is normally set via `font-lock-defaults'.") | |
b89e1134 | 554 | |
030f4a35 | 555 | (defvar font-lock-keywords-case-fold-search nil |
d46c21ec SM |
556 | "*Non-nil means the patterns in `font-lock-keywords' are case-insensitive. |
557 | This is normally set via `font-lock-defaults'.") | |
030f4a35 | 558 | |
c0a6a9fe SM |
559 | (defvar font-lock-syntactically-fontified 0 |
560 | "Point up to which `font-lock-syntactic-keywords' has been applied. | |
561 | If nil, this is ignored, in which case the syntactic fontification may | |
562 | sometimes be slightly incorrect.") | |
563 | (make-variable-buffer-local 'font-lock-syntactically-fontified) | |
564 | ||
1c172af4 SM |
565 | (defvar font-lock-syntactic-face-function |
566 | (lambda (state) | |
567 | (if (nth 3 state) font-lock-string-face font-lock-comment-face)) | |
568 | "Function to determine which face to use when fontifying syntactically. | |
569 | The function is called with a single parameter (the state as returned by | |
570 | `parse-partial-sexp' at the beginning of the region to highlight) and | |
571 | should return a face.") | |
572 | ||
ac6e572c SM |
573 | (defvar font-lock-syntactic-keywords nil |
574 | "A list of the syntactic keywords to highlight. | |
575 | Can be the list or the name of a function or variable whose value is the list. | |
576 | See `font-lock-keywords' for a description of the form of this list; | |
577 | the differences are listed below. MATCH-HIGHLIGHT should be of the form: | |
578 | ||
579 | (MATCH SYNTAX OVERRIDE LAXMATCH) | |
580 | ||
5299cb8e SM |
581 | where SYNTAX can be a string (as taken by `modify-syntax-entry'), a syntax |
582 | table, a cons cell (as returned by `string-to-syntax') or an expression whose | |
583 | value is such a form. OVERRIDE cannot be `prepend' or `append'. | |
ac6e572c | 584 | |
9c8de95c SM |
585 | For example, an element of the form highlights syntactically: |
586 | ||
5299cb8e | 587 | (\"\\\\$\\\\(#\\\\)\" 1 \".\") |
9c8de95c | 588 | |
5299cb8e SM |
589 | a hash character when following a dollar character, with a SYNTAX of |
590 | \".\" (meaning punctuation syntax). Assuming that the buffer syntax table does | |
9c8de95c SM |
591 | specify hash characters to have comment start syntax, the element will only |
592 | highlight hash characters that do not follow dollar characters as comments | |
593 | syntactically. | |
594 | ||
595 | (\"\\\\('\\\\).\\\\('\\\\)\" | |
5299cb8e SM |
596 | (1 \"\\\"\") |
597 | (2 \"\\\"\")) | |
9c8de95c | 598 | |
5299cb8e SM |
599 | both single quotes which surround a single character, with a SYNTAX of |
600 | \"\\\"\" (meaning string quote syntax). Assuming that the buffer syntax table | |
9c8de95c SM |
601 | does not specify single quotes to have quote syntax, the element will only |
602 | highlight single quotes of the form 'c' as strings syntactically. | |
603 | Other forms, such as foo'bar or 'fubar', will not be highlighted as strings. | |
604 | ||
ac6e572c SM |
605 | This is normally set via `font-lock-defaults'.") |
606 | ||
b056da51 | 607 | (defvar font-lock-syntax-table nil |
799761f0 | 608 | "Non-nil means use this syntax table for fontifying. |
d46c21ec SM |
609 | If this is nil, the major mode's syntax table is used. |
610 | This is normally set via `font-lock-defaults'.") | |
611 | ||
9bfbb130 SM |
612 | ;; If this is nil, we only use the beginning of the buffer if we can't use |
613 | ;; `font-lock-cache-position' and `font-lock-cache-state'. | |
d46c21ec | 614 | (defvar font-lock-beginning-of-syntax-function nil |
9bfbb130 | 615 | "*Non-nil means use this function to move back outside of a syntactic block. |
a078558d SM |
616 | When called with no args it should leave point at the beginning of any |
617 | enclosing syntactic block. | |
9bfbb130 | 618 | If this is nil, the beginning of the buffer is used (in the worst case). |
d46c21ec | 619 | This is normally set via `font-lock-defaults'.") |
b056da51 | 620 | |
a078558d SM |
621 | (defvar font-lock-mark-block-function nil |
622 | "*Non-nil means use this function to mark a block of text. | |
623 | When called with no args it should leave point at the beginning of any | |
624 | enclosing textual block and mark at the end. | |
625 | This is normally set via `font-lock-defaults'.") | |
626 | ||
a2b8e66b SM |
627 | (defvar font-lock-fontify-buffer-function 'font-lock-default-fontify-buffer |
628 | "Function to use for fontifying the buffer. | |
629 | This is normally set via `font-lock-defaults'.") | |
630 | ||
631 | (defvar font-lock-unfontify-buffer-function 'font-lock-default-unfontify-buffer | |
632 | "Function to use for unfontifying the buffer. | |
633 | This is used when turning off Font Lock mode. | |
634 | This is normally set via `font-lock-defaults'.") | |
635 | ||
636 | (defvar font-lock-fontify-region-function 'font-lock-default-fontify-region | |
637 | "Function to use for fontifying a region. | |
638 | It should take two args, the beginning and end of the region, and an optional | |
639 | third arg VERBOSE. If non-nil, the function should print status messages. | |
640 | This is normally set via `font-lock-defaults'.") | |
641 | ||
642 | (defvar font-lock-unfontify-region-function 'font-lock-default-unfontify-region | |
643 | "Function to use for unfontifying a region. | |
644 | It should take two args, the beginning and end of the region. | |
645 | This is normally set via `font-lock-defaults'.") | |
646 | ||
647 | (defvar font-lock-inhibit-thing-lock nil | |
648 | "List of Font Lock mode related modes that should not be turned on. | |
019f00d8 | 649 | Currently, valid mode names are `fast-lock-mode', `jit-lock-mode' and |
e7f07c2c | 650 | `lazy-lock-mode'. This is normally set via `font-lock-defaults'.") |
a2b8e66b | 651 | |
f9261020 | 652 | (defvar font-lock-multiline nil |
041470d2 SM |
653 | "Whether font-lock should cater to multiline keywords. |
654 | If nil, don't try to handle multiline patterns. | |
655 | If t, always handle multiline patterns. | |
656 | If `undecided', don't try to handle multiline patterns until you see one. | |
657 | Major/minor modes can set this variable if they know which option applies.") | |
658 | ||
9bfbb130 | 659 | (defvar font-lock-fontified nil) ; Whether we have fontified the buffer. |
030f4a35 | 660 | \f |
5aa29679 RS |
661 | ;; Font Lock mode. |
662 | ||
663 | (eval-when-compile | |
2e6a15fc | 664 | ;; |
5aa29679 | 665 | ;; We don't do this at the top-level as we only use non-autoloaded macros. |
2e6a15fc SM |
666 | (require 'cl) |
667 | ;; | |
668 | ;; Borrowed from lazy-lock.el. | |
669 | ;; We use this to preserve or protect things when modifying text properties. | |
670 | (defmacro save-buffer-state (varlist &rest body) | |
671 | "Bind variables according to VARLIST and eval BODY restoring buffer state." | |
d2251bbf SM |
672 | `(let* ,(append varlist |
673 | '((modified (buffer-modified-p)) (buffer-undo-list t) | |
674 | (inhibit-read-only t) (inhibit-point-motion-hooks t) | |
15d1caef | 675 | (inhibit-modification-hooks t) |
d2251bbf SM |
676 | deactivate-mark buffer-file-name buffer-file-truename)) |
677 | ,@body | |
678 | (when (and (not modified) (buffer-modified-p)) | |
679 | (set-buffer-modified-p nil)))) | |
e0e277ff | 680 | (put 'save-buffer-state 'lisp-indent-function 1) |
afa18a4e | 681 | (def-edebug-spec save-buffer-state let) |
e0e277ff SM |
682 | ;; |
683 | ;; Shut up the byte compiler. | |
1c172af4 | 684 | (defvar font-lock-face-attributes)) ; Obsolete but respected if set. |
030f4a35 RS |
685 | |
686 | ;;;###autoload | |
1c172af4 | 687 | (define-minor-mode font-lock-mode |
e595fa35 | 688 | "Toggle Font Lock mode. |
dcc70c38 EZ |
689 | With arg, turn Font Lock mode on if and only if arg is positive, |
690 | otherwise turn it off. | |
c0a6a9fe | 691 | \(Font Lock is also known as \"syntax highlighting\".) |
030f4a35 RS |
692 | |
693 | When Font Lock mode is enabled, text is fontified as you type it: | |
694 | ||
a1eb1cf1 RS |
695 | - Comments are displayed in `font-lock-comment-face'; |
696 | - Strings are displayed in `font-lock-string-face'; | |
697 | - Certain other expressions are displayed in other faces according to the | |
698 | value of the variable `font-lock-keywords'. | |
699 | ||
3b967bed EZ |
700 | To customize the faces (colors, fonts, etc.) used by Font Lock for |
701 | fontifying different parts of buffer text, use \\[customize-face]. | |
702 | ||
a1eb1cf1 RS |
703 | You can enable Font Lock mode in any major mode automatically by turning on in |
704 | the major mode's hook. For example, put in your ~/.emacs: | |
705 | ||
706 | (add-hook 'c-mode-hook 'turn-on-font-lock) | |
707 | ||
a2b8e66b | 708 | Alternatively, you can use Global Font Lock mode to automagically turn on Font |
fd23afbe SM |
709 | Lock mode in buffers whose major mode supports it and whose major mode is one |
710 | of `font-lock-global-modes'. For example, put in your ~/.emacs: | |
a2b8e66b SM |
711 | |
712 | (global-font-lock-mode t) | |
713 | ||
fd23afbe SM |
714 | There are a number of support modes that may be used to speed up Font Lock mode |
715 | in various ways, specified via the variable `font-lock-support-mode'. Where | |
716 | major modes support different levels of fontification, you can use the variable | |
fb512de9 | 717 | `font-lock-maximum-decoration' to specify which level you generally prefer. |
b89e1134 SM |
718 | When you turn Font Lock mode on/off the buffer is fontified/defontified, though |
719 | fontification occurs only if the buffer is less than `font-lock-maximum-size'. | |
7d7d915a | 720 | |
fd23afbe SM |
721 | For example, to specify that Font Lock mode use use Lazy Lock mode as a support |
722 | mode and use maximum levels of fontification, put in your ~/.emacs: | |
723 | ||
724 | (setq font-lock-support-mode 'lazy-lock-mode) | |
725 | (setq font-lock-maximum-decoration t) | |
726 | ||
56fcbd7e SM |
727 | To add your own highlighting for some major mode, and modify the highlighting |
728 | selected automatically via the variable `font-lock-maximum-decoration', you can | |
729 | use `font-lock-add-keywords'. | |
730 | ||
7d7d915a SM |
731 | To fontify a buffer, without turning on Font Lock mode and regardless of buffer |
732 | size, you can use \\[font-lock-fontify-buffer]. | |
a078558d SM |
733 | |
734 | To fontify a block (the function or paragraph containing point, or a number of | |
735 | lines around point), perhaps because modification on the current line caused | |
fd23afbe SM |
736 | syntactic change on other lines, you can use \\[font-lock-fontify-block]. |
737 | ||
2273c36b SM |
738 | See the variable `font-lock-defaults-alist' for the Font Lock mode default |
739 | settings. You can set your own default settings for some mode, by setting a | |
740 | buffer local value for `font-lock-defaults', via its mode hook." | |
1c172af4 | 741 | nil nil nil |
a2b8e66b SM |
742 | ;; Don't turn on Font Lock mode if we don't have a display (we're running a |
743 | ;; batch job) or if the buffer is invisible (the name starts with a space). | |
1c172af4 SM |
744 | (when (or noninteractive (eq (aref (buffer-name) 0) ?\ )) |
745 | (setq font-lock-mode nil)) | |
746 | ||
747 | ;; Turn on Font Lock mode. | |
748 | (when font-lock-mode | |
749 | (add-hook 'after-change-functions 'font-lock-after-change-function nil t) | |
750 | (font-lock-set-defaults) | |
751 | (font-lock-turn-on-thing-lock) | |
752 | ;; Fontify the buffer if we have to. | |
753 | (let ((max-size (font-lock-value-in-major-mode font-lock-maximum-size))) | |
754 | (cond (font-lock-fontified | |
755 | nil) | |
756 | ((or (null max-size) (> max-size (buffer-size))) | |
757 | (font-lock-fontify-buffer)) | |
758 | (font-lock-verbose | |
759 | (message "Fontifying %s...buffer size greater than font-lock-maximum-size" | |
760 | (buffer-name)))))) | |
761 | ;; Turn off Font Lock mode. | |
762 | (unless font-lock-mode | |
763 | (remove-hook 'after-change-functions 'font-lock-after-change-function t) | |
764 | (font-lock-unfontify-buffer) | |
765 | (font-lock-turn-off-thing-lock) | |
766 | (font-lock-unset-defaults))) | |
030f4a35 | 767 | |
a1eb1cf1 RS |
768 | ;;;###autoload |
769 | (defun turn-on-font-lock () | |
1c172af4 | 770 | "Turn on Font Lock mode (only if the terminal can display it)." |
01b69148 | 771 | (unless font-lock-mode |
56fcbd7e | 772 | (font-lock-mode))) |
c1f2ffc8 SM |
773 | |
774 | ;;;###autoload | |
041470d2 SM |
775 | (defun font-lock-add-keywords (mode keywords &optional append) |
776 | "Add highlighting KEYWORDS for MODE. | |
777 | MODE should be a symbol, the major mode command name, such as `c-mode' | |
1c626aaf | 778 | or nil. If nil, highlighting keywords are added for the current buffer. |
c1f2ffc8 SM |
779 | KEYWORDS should be a list; see the variable `font-lock-keywords'. |
780 | By default they are added at the beginning of the current highlighting list. | |
781 | If optional argument APPEND is `set', they are used to replace the current | |
2d63aa67 SM |
782 | highlighting list. If APPEND is any other non-nil value, they are added at the |
783 | end of the current highlighting list. | |
c1f2ffc8 SM |
784 | |
785 | For example: | |
786 | ||
787 | (font-lock-add-keywords 'c-mode | |
788 | '((\"\\\\\\=<\\\\(FIXME\\\\):\" 1 font-lock-warning-face prepend) | |
789 | (\"\\\\\\=<\\\\(and\\\\|or\\\\|not\\\\)\\\\\\=>\" . font-lock-keyword-face))) | |
790 | ||
791 | adds two fontification patterns for C mode, to fontify `FIXME:' words, even in | |
2d63aa67 SM |
792 | comments, and to fontify `and', `or' and `not' words as keywords. |
793 | ||
794 | Note that some modes have specialised support for additional patterns, e.g., | |
795 | see the variables `c-font-lock-extra-types', `c++-font-lock-extra-types', | |
796 | `objc-font-lock-extra-types' and `java-font-lock-extra-types'." | |
041470d2 SM |
797 | (cond (mode |
798 | ;; If MODE is non-nil, add the KEYWORDS and APPEND spec to | |
c1f2ffc8 SM |
799 | ;; `font-lock-keywords-alist' so `font-lock-set-defaults' uses them. |
800 | (let ((spec (cons keywords append)) cell) | |
041470d2 | 801 | (if (setq cell (assq mode font-lock-keywords-alist)) |
76f5e2af GM |
802 | (if (eq append 'set) |
803 | (setcdr cell (list spec)) | |
804 | (setcdr cell (append (cdr cell) (list spec)))) | |
805 | (push (list mode spec) font-lock-keywords-alist))) | |
806 | ;; Make sure that `font-lock-removed-keywords-alist' does not | |
807 | ;; contain the new keywords. | |
808 | (font-lock-update-removed-keyword-alist mode keywords append)) | |
6e1d0d15 SM |
809 | (t |
810 | ;; Otherwise set or add the keywords now. | |
811 | (font-lock-set-defaults) | |
812 | (if (eq append 'set) | |
813 | (setq font-lock-keywords keywords) | |
814 | (font-lock-remove-keywords nil keywords) ;to avoid duplicates | |
c1f2ffc8 SM |
815 | (let ((old (if (eq (car-safe font-lock-keywords) t) |
816 | (cdr font-lock-keywords) | |
817 | font-lock-keywords))) | |
818 | (setq font-lock-keywords (if append | |
819 | (append old keywords) | |
820 | (append keywords old)))))))) | |
3708dfe9 | 821 | |
6e1d0d15 | 822 | (defun font-lock-update-removed-keyword-alist (mode keywords append) |
76f5e2af | 823 | ;; Update `font-lock-removed-keywords-alist' when adding new |
6e1d0d15 | 824 | ;; KEYWORDS to MODE. |
76f5e2af GM |
825 | ;; |
826 | ;; When font-lock is enabled first all keywords in the list | |
827 | ;; `font-lock-keywords-alist' are added, then all keywords in the | |
828 | ;; list `font-lock-removed-keywords-alist' are removed. If a | |
829 | ;; keyword was once added, removed, and then added again it must be | |
830 | ;; removed from the removed-keywords list. Otherwise the second add | |
831 | ;; will not take effect. | |
6e1d0d15 | 832 | (let ((cell (assq mode font-lock-removed-keywords-alist))) |
76f5e2af GM |
833 | (if cell |
834 | (if (eq append 'set) | |
835 | ;; A new set of keywords is defined. Forget all about | |
836 | ;; our old keywords that should be removed. | |
837 | (setq font-lock-removed-keywords-alist | |
838 | (delq cell font-lock-removed-keywords-alist)) | |
839 | ;; Delete all previously removed keywords. | |
840 | (dolist (kword keywords) | |
841 | (setcdr cell (delete kword (cdr cell)))) | |
6e1d0d15 | 842 | ;; Delete the mode cell if empty. |
76f5e2af GM |
843 | (if (null (cdr cell)) |
844 | (setq font-lock-removed-keywords-alist | |
845 | (delq cell font-lock-removed-keywords-alist))))))) | |
846 | ||
847 | ;; Written by Anders Lindgren <andersl@andersl.com>. | |
848 | ;; | |
849 | ;; Case study: | |
850 | ;; (I) The keywords are removed from a major mode. | |
851 | ;; In this case the keyword could be local (i.e. added earlier by | |
852 | ;; `font-lock-add-keywords'), global, or both. | |
853 | ;; | |
854 | ;; (a) In the local case we remove the keywords from the variable | |
855 | ;; `font-lock-keywords-alist'. | |
856 | ;; | |
857 | ;; (b) The actual global keywords are not known at this time. | |
858 | ;; All keywords are added to `font-lock-removed-keywords-alist', | |
859 | ;; when font-lock is enabled those keywords are removed. | |
860 | ;; | |
861 | ;; Note that added keywords are taken out of the list of removed | |
862 | ;; keywords. This ensure correct operation when the same keyword | |
863 | ;; is added and removed several times. | |
864 | ;; | |
865 | ;; (II) The keywords are removed from the current buffer. | |
3708dfe9 | 866 | ;;;###autoload |
6e1d0d15 SM |
867 | (defun font-lock-remove-keywords (mode keywords) |
868 | "Remove highlighting KEYWORDS for MODE. | |
3708dfe9 | 869 | |
6e1d0d15 | 870 | MODE should be a symbol, the major mode command name, such as `c-mode' |
76f5e2af | 871 | or nil. If nil, highlighting keywords are removed for the current buffer." |
6e1d0d15 SM |
872 | (cond (mode |
873 | ;; Remove one keyword at the time. | |
874 | (dolist (keyword keywords) | |
875 | (let ((top-cell (assq mode font-lock-keywords-alist))) | |
876 | ;; If MODE is non-nil, remove the KEYWORD from | |
76f5e2af GM |
877 | ;; `font-lock-keywords-alist'. |
878 | (when top-cell | |
879 | (dolist (keyword-list-append-pair (cdr top-cell)) | |
880 | ;; `keywords-list-append-pair' is a cons with a list of | |
881 | ;; keywords in the car top-cell and the original append | |
882 | ;; argument in the cdr top-cell. | |
883 | (setcar keyword-list-append-pair | |
884 | (delete keyword (car keyword-list-append-pair)))) | |
885 | ;; Remove keyword list/append pair when the keyword list | |
886 | ;; is empty and append doesn't specify `set'. (If it | |
887 | ;; should be deleted then previously deleted keywords | |
888 | ;; would appear again.) | |
889 | (let ((cell top-cell)) | |
890 | (while (cdr cell) | |
891 | (if (and (null (car (car (cdr cell)))) | |
892 | (not (eq (cdr (car (cdr cell))) 'set))) | |
893 | (setcdr cell (cdr (cdr cell))) | |
894 | (setq cell (cdr cell))))) | |
895 | ;; Final cleanup, remove major mode cell if last keyword | |
896 | ;; was deleted. | |
897 | (if (null (cdr top-cell)) | |
898 | (setq font-lock-keywords-alist | |
899 | (delq top-cell font-lock-keywords-alist)))) | |
900 | ;; Remember the keyword in case it is not local. | |
6e1d0d15 | 901 | (let ((cell (assq mode font-lock-removed-keywords-alist))) |
76f5e2af GM |
902 | (if cell |
903 | (unless (member keyword (cdr cell)) | |
904 | (nconc cell (list keyword))) | |
6e1d0d15 SM |
905 | (push (cons mode (list keyword)) |
906 | font-lock-removed-keywords-alist)))))) | |
907 | (t | |
908 | ;; Otherwise remove it immediately. | |
909 | (font-lock-set-defaults) | |
910 | (setq font-lock-keywords (copy-sequence font-lock-keywords)) | |
911 | (dolist (keyword keywords) | |
76f5e2af | 912 | (setq font-lock-keywords |
6e1d0d15 SM |
913 | (delete keyword |
914 | ;; The keywords might be compiled. | |
915 | (delete (font-lock-compile-keyword keyword) | |
916 | font-lock-keywords))))))) | |
a2b8e66b | 917 | \f |
2d63aa67 SM |
918 | ;;; Global Font Lock mode. |
919 | ||
a2b8e66b | 920 | ;; A few people have hassled in the past for a way to make it easier to turn on |
5aa29679 RS |
921 | ;; Font Lock mode, without the user needing to know for which modes s/he has to |
922 | ;; turn it on, perhaps the same way hilit19.el/hl319.el does. I've always | |
a2b8e66b SM |
923 | ;; balked at that way, as I see it as just re-moulding the same problem in |
924 | ;; another form. That is; some person would still have to keep track of which | |
925 | ;; modes (which may not even be distributed with Emacs) support Font Lock mode. | |
926 | ;; The list would always be out of date. And that person might have to be me. | |
927 | ||
5aa29679 RS |
928 | ;; Implementation. |
929 | ;; | |
930 | ;; In a previous discussion the following hack came to mind. It is a gross | |
931 | ;; hack, but it generally works. We use the convention that major modes start | |
932 | ;; by calling the function `kill-all-local-variables', which in turn runs | |
a2b8e66b SM |
933 | ;; functions on the hook variable `change-major-mode-hook'. We attach our |
934 | ;; function `font-lock-change-major-mode' to that hook. Of course, when this | |
935 | ;; hook is run, the major mode is in the process of being changed and we do not | |
936 | ;; know what the final major mode will be. So, `font-lock-change-major-mode' | |
937 | ;; only (a) notes the name of the current buffer, and (b) adds our function | |
5aa29679 RS |
938 | ;; `turn-on-font-lock-if-enabled' to the hook variables `find-file-hooks' and |
939 | ;; `post-command-hook' (for buffers that are not visiting files). By the time | |
940 | ;; the functions on the first of these hooks to be run are run, the new major | |
941 | ;; mode is assumed to be in place. This way we get a Font Lock function run | |
942 | ;; when a major mode is turned on, without knowing major modes or their hooks. | |
943 | ;; | |
a2b8e66b SM |
944 | ;; Naturally this requires that (a) major modes run `kill-all-local-variables', |
945 | ;; as they are supposed to do, and (b) the major mode is in place after the | |
5aa29679 RS |
946 | ;; file is visited or the command that ran `kill-all-local-variables' has |
947 | ;; finished, whichever the sooner. Arguably, any major mode that does not | |
948 | ;; follow the convension (a) is broken, and I can't think of any reason why (b) | |
949 | ;; would not be met (except `gnudoit' on non-files). However, it is not clean. | |
950 | ;; | |
a2b8e66b SM |
951 | ;; Probably the cleanest solution is to have each major mode function run some |
952 | ;; hook, e.g., `major-mode-hook', but maybe implementing that change is | |
5aa29679 RS |
953 | ;; impractical. I am personally against making `setq' a macro or be advised, |
954 | ;; or have a special function such as `set-major-mode', but maybe someone can | |
955 | ;; come up with another solution? | |
956 | ||
957 | ;; User interface. | |
958 | ;; | |
959 | ;; Although Global Font Lock mode is a pseudo-mode, I think that the user | |
960 | ;; interface should conform to the usual Emacs convention for modes, i.e., a | |
961 | ;; command to toggle the feature (`global-font-lock-mode') with a variable for | |
962 | ;; finer control of the mode's behaviour (`font-lock-global-modes'). | |
963 | ;; | |
2e6a15fc SM |
964 | ;; The feature should not be enabled by loading font-lock.el, since other |
965 | ;; mechanisms for turning on Font Lock mode, such as M-x font-lock-mode RET or | |
966 | ;; (add-hook 'c-mode-hook 'turn-on-font-lock), would cause Font Lock mode to be | |
967 | ;; turned on everywhere. That would not be intuitive or informative because | |
968 | ;; loading a file tells you nothing about the feature or how to control it. It | |
1c626aaf | 969 | ;; would also be contrary to the Principle of Least Surprise. sm. |
a2b8e66b | 970 | |
23a0e11b SM |
971 | (defcustom font-lock-global-modes t |
972 | "*Modes for which Font Lock mode is automagically turned on. | |
019f00d8 | 973 | Global Font Lock mode is controlled by the command `global-font-lock-mode'. |
23a0e11b SM |
974 | If nil, means no modes have Font Lock mode automatically turned on. |
975 | If t, all modes that support Font Lock mode have it automatically turned on. | |
976 | If a list, it should be a list of `major-mode' symbol names for which Font Lock | |
977 | mode should be automatically turned on. The sense of the list is negated if it | |
978 | begins with `not'. For example: | |
979 | (c-mode c++-mode) | |
980 | means that Font Lock mode is turned on for buffers in C and C++ modes only." | |
981 | :type '(choice (const :tag "none" nil) | |
982 | (const :tag "all" t) | |
983 | (set :menu-tag "mode specific" :tag "modes" | |
984 | :value (not) | |
985 | (const :tag "Except" not) | |
986 | (repeat :inline t (symbol :tag "mode")))) | |
987 | :group 'font-lock) | |
988 | ||
a465832f | 989 | (defun turn-on-font-lock-if-enabled () |
ba22aeff SM |
990 | (when (and (or font-lock-defaults |
991 | (assq major-mode font-lock-defaults-alist)) | |
992 | (or (eq font-lock-global-modes t) | |
993 | (if (eq (car-safe font-lock-global-modes) 'not) | |
994 | (not (memq major-mode (cdr font-lock-global-modes))) | |
995 | (memq major-mode font-lock-global-modes)))) | |
996 | (let (inhibit-quit) | |
997 | (turn-on-font-lock)))) | |
998 | ||
999 | ;;;###autoload | |
1000 | (easy-mmode-define-global-mode | |
1001 | global-font-lock-mode font-lock-mode turn-on-font-lock-if-enabled | |
1002 | :extra-args (dummy)) | |
5aa29679 | 1003 | |
2d63aa67 | 1004 | ;;; End of Global Font Lock mode. |
a2b8e66b | 1005 | \f |
2d63aa67 SM |
1006 | ;;; Font Lock Support mode. |
1007 | ||
5aa29679 RS |
1008 | ;; This is the code used to interface font-lock.el with any of its add-on |
1009 | ;; packages, and provide the user interface. Packages that have their own | |
1010 | ;; local buffer fontification functions (see below) may have to call | |
1011 | ;; `font-lock-after-fontify-buffer' and/or `font-lock-after-unfontify-buffer' | |
1012 | ;; themselves. | |
1013 | ||
5f999b0b | 1014 | (defcustom font-lock-support-mode 'jit-lock-mode |
5aa29679 RS |
1015 | "*Support mode for Font Lock mode. |
1016 | Support modes speed up Font Lock mode by being choosy about when fontification | |
e7f07c2c GM |
1017 | occurs. Known support modes are Fast Lock mode (symbol `fast-lock-mode'), |
1018 | Lazy Lock mode (symbol `lazy-lock-mode'), and Just-in-time Lock mode (symbol | |
1019 | `jit-lock-mode'. See those modes for more info. | |
5aa29679 RS |
1020 | If nil, means support for Font Lock mode is never performed. |
1021 | If a symbol, use that support mode. | |
1022 | If a list, each element should be of the form (MAJOR-MODE . SUPPORT-MODE), | |
1023 | where MAJOR-MODE is a symbol or t (meaning the default). For example: | |
1024 | ((c-mode . fast-lock-mode) (c++-mode . fast-lock-mode) (t . lazy-lock-mode)) | |
1025 | means that Fast Lock mode is used to support Font Lock mode for buffers in C or | |
1026 | C++ modes, and Lazy Lock mode is used to support Font Lock mode otherwise. | |
1027 | ||
55015061 | 1028 | The value of this variable is used when Font Lock mode is turned on." |
b34aa0a3 SM |
1029 | :type '(choice (const :tag "none" nil) |
1030 | (const :tag "fast lock" fast-lock-mode) | |
1031 | (const :tag "lazy lock" lazy-lock-mode) | |
e7f07c2c | 1032 | (const :tag "jit lock" jit-lock-mode) |
b34aa0a3 | 1033 | (repeat :menu-tag "mode specific" :tag "mode specific" |
1c172af4 | 1034 | :value ((t . jit-lock-mode)) |
b34aa0a3 SM |
1035 | (cons :tag "Instance" |
1036 | (radio :tag "Mode" | |
1037 | (const :tag "all" t) | |
1038 | (symbol :tag "name")) | |
39df451b SM |
1039 | (radio :tag "Support" |
1040 | (const :tag "none" nil) | |
b34aa0a3 | 1041 | (const :tag "fast lock" fast-lock-mode) |
e7f07c2c GM |
1042 | (const :tag "lazy lock" lazy-lock-mode) |
1043 | (const :tag "JIT lock" jit-lock-mode))) | |
b34aa0a3 | 1044 | )) |
c69e5fcd | 1045 | :version "21.1" |
55015061 | 1046 | :group 'font-lock) |
5aa29679 | 1047 | |
2e6a15fc SM |
1048 | (defvar fast-lock-mode nil) |
1049 | (defvar lazy-lock-mode nil) | |
e7f07c2c | 1050 | (defvar jit-lock-mode nil) |
2e6a15fc | 1051 | |
5aa29679 RS |
1052 | (defun font-lock-turn-on-thing-lock () |
1053 | (let ((thing-mode (font-lock-value-in-major-mode font-lock-support-mode))) | |
1054 | (cond ((eq thing-mode 'fast-lock-mode) | |
1055 | (fast-lock-mode t)) | |
1056 | ((eq thing-mode 'lazy-lock-mode) | |
e7f07c2c GM |
1057 | (lazy-lock-mode t)) |
1058 | ((eq thing-mode 'jit-lock-mode) | |
28a53bc1 SM |
1059 | ;; Prepare for jit-lock |
1060 | (remove-hook 'after-change-functions | |
1061 | 'font-lock-after-change-function t) | |
1062 | (set (make-local-variable 'font-lock-fontify-buffer-function) | |
fd612dd9 | 1063 | 'jit-lock-refontify) |
28a53bc1 SM |
1064 | ;; Don't fontify eagerly (and don't abort is the buffer is large). |
1065 | (set (make-local-variable 'font-lock-fontified) t) | |
1066 | ;; Use jit-lock. | |
1067 | (jit-lock-register 'font-lock-fontify-region | |
1068 | (not font-lock-keywords-only)))))) | |
5aa29679 | 1069 | |
5aa29679 RS |
1070 | (defun font-lock-turn-off-thing-lock () |
1071 | (cond (fast-lock-mode | |
1c172af4 | 1072 | (fast-lock-mode -1)) |
e7f07c2c | 1073 | (jit-lock-mode |
28a53bc1 SM |
1074 | (jit-lock-unregister 'font-lock-fontify-region) |
1075 | ;; Reset local vars to the non-jit-lock case. | |
1076 | (kill-local-variable 'font-lock-fontify-buffer-function)) | |
5aa29679 | 1077 | (lazy-lock-mode |
1c172af4 | 1078 | (lazy-lock-mode -1)))) |
5aa29679 RS |
1079 | |
1080 | (defun font-lock-after-fontify-buffer () | |
1081 | (cond (fast-lock-mode | |
1082 | (fast-lock-after-fontify-buffer)) | |
13f0d185 SM |
1083 | ;; Useless now that jit-lock intercepts font-lock-fontify-buffer. -sm |
1084 | ;; (jit-lock-mode | |
1085 | ;; (jit-lock-after-fontify-buffer)) | |
5aa29679 RS |
1086 | (lazy-lock-mode |
1087 | (lazy-lock-after-fontify-buffer)))) | |
1088 | ||
1089 | (defun font-lock-after-unfontify-buffer () | |
1090 | (cond (fast-lock-mode | |
1091 | (fast-lock-after-unfontify-buffer)) | |
13f0d185 SM |
1092 | ;; Useless as well. It's only called when: |
1093 | ;; - turning off font-lock: it does not matter if we leave spurious | |
1094 | ;; `fontified' text props around since jit-lock-mode is also off. | |
1095 | ;; - font-lock-default-fontify-buffer fails: this is not run | |
1096 | ;; any more anyway. -sm | |
5e9e032a | 1097 | ;; |
13f0d185 SM |
1098 | ;; (jit-lock-mode |
1099 | ;; (jit-lock-after-unfontify-buffer)) | |
5aa29679 RS |
1100 | (lazy-lock-mode |
1101 | (lazy-lock-after-unfontify-buffer)))) | |
1102 | ||
2d63aa67 | 1103 | ;;; End of Font Lock Support mode. |
5aa29679 | 1104 | \f |
2d63aa67 | 1105 | ;;; Fontification functions. |
a1eb1cf1 | 1106 | |
56fcbd7e SM |
1107 | ;; Rather than the function, e.g., `font-lock-fontify-region' containing the |
1108 | ;; code to fontify a region, the function runs the function whose name is the | |
1109 | ;; value of the variable, e.g., `font-lock-fontify-region-function'. Normally, | |
1110 | ;; the value of this variable is, e.g., `font-lock-default-fontify-region' | |
1111 | ;; which does contain the code to fontify a region. However, the value of the | |
1112 | ;; variable could be anything and thus, e.g., `font-lock-fontify-region' could | |
1113 | ;; do anything. The indirection of the fontification functions gives major | |
1114 | ;; modes the capability of modifying the way font-lock.el fontifies. Major | |
1115 | ;; modes can modify the values of, e.g., `font-lock-fontify-region-function', | |
1116 | ;; via the variable `font-lock-defaults'. | |
1117 | ;; | |
1118 | ;; For example, Rmail mode sets the variable `font-lock-defaults' so that | |
1119 | ;; font-lock.el uses its own function for buffer fontification. This function | |
1120 | ;; makes fontification be on a message-by-message basis and so visiting an | |
1121 | ;; RMAIL file is much faster. A clever implementation of the function might | |
1122 | ;; fontify the headers differently than the message body. (It should, and | |
1123 | ;; correspondingly for Mail mode, but I can't be bothered to do the work. Can | |
1124 | ;; you?) This hints at a more interesting use... | |
1125 | ;; | |
1126 | ;; Languages that contain text normally contained in different major modes | |
1127 | ;; could define their own fontification functions that treat text differently | |
1128 | ;; depending on its context. For example, Perl mode could arrange that here | |
1129 | ;; docs are fontified differently than Perl code. Or Yacc mode could fontify | |
1130 | ;; rules one way and C code another. Neat! | |
1131 | ;; | |
1132 | ;; A further reason to use the fontification indirection feature is when the | |
1133 | ;; default syntactual fontification, or the default fontification in general, | |
1134 | ;; is not flexible enough for a particular major mode. For example, perhaps | |
55015061 SM |
1135 | ;; comments are just too hairy for `font-lock-fontify-syntactically-region' to |
1136 | ;; cope with. You need to write your own version of that function, e.g., | |
1137 | ;; `hairy-fontify-syntactically-region', and make your own version of | |
1138 | ;; `hairy-fontify-region' call that function before calling | |
56fcbd7e SM |
1139 | ;; `font-lock-fontify-keywords-region' for the normal regexp fontification |
1140 | ;; pass. And Hairy mode would set `font-lock-defaults' so that font-lock.el | |
1141 | ;; would call your region fontification function instead of its own. For | |
55015061 | 1142 | ;; example, TeX modes could fontify {\foo ...} and \bar{...} etc. multi-line |
56fcbd7e SM |
1143 | ;; directives correctly and cleanly. (It is the same problem as fontifying |
1144 | ;; multi-line strings and comments; regexps are not appropriate for the job.) | |
1145 | ||
a1eb1cf1 | 1146 | ;;;###autoload |
030f4a35 | 1147 | (defun font-lock-fontify-buffer () |
019f00d8 | 1148 | "Fontify the current buffer the way the function `font-lock-mode' would." |
030f4a35 | 1149 | (interactive) |
a2b8e66b SM |
1150 | (let ((font-lock-verbose (or font-lock-verbose (interactive-p)))) |
1151 | (funcall font-lock-fontify-buffer-function))) | |
1152 | ||
1153 | (defun font-lock-unfontify-buffer () | |
1154 | (funcall font-lock-unfontify-buffer-function)) | |
1155 | ||
1156 | (defun font-lock-fontify-region (beg end &optional loudly) | |
1157 | (funcall font-lock-fontify-region-function beg end loudly)) | |
1158 | ||
1159 | (defun font-lock-unfontify-region (beg end) | |
1160 | (funcall font-lock-unfontify-region-function beg end)) | |
1161 | ||
1162 | (defun font-lock-default-fontify-buffer () | |
5aa29679 RS |
1163 | (let ((verbose (if (numberp font-lock-verbose) |
1164 | (> (buffer-size) font-lock-verbose) | |
1165 | font-lock-verbose))) | |
79f238c9 | 1166 | (with-temp-message |
1787769b SM |
1167 | (when verbose |
1168 | (format "Fontifying %s..." (buffer-name))) | |
79f238c9 SM |
1169 | ;; Make sure we have the right `font-lock-keywords' etc. |
1170 | (unless font-lock-mode | |
1171 | (font-lock-set-defaults)) | |
1172 | ;; Make sure we fontify etc. in the whole buffer. | |
1173 | (save-restriction | |
1174 | (widen) | |
1175 | (condition-case nil | |
1176 | (save-excursion | |
1177 | (save-match-data | |
1178 | (font-lock-fontify-region (point-min) (point-max) verbose) | |
1179 | (font-lock-after-fontify-buffer) | |
1180 | (setq font-lock-fontified t))) | |
1181 | ;; We don't restore the old fontification, so it's best to unfontify. | |
1182 | (quit (font-lock-unfontify-buffer)))) | |
1183 | ;; Make sure we undo `font-lock-keywords' etc. | |
1184 | (unless font-lock-mode | |
1185 | (font-lock-unset-defaults))))) | |
7d7d915a | 1186 | |
a2b8e66b | 1187 | (defun font-lock-default-unfontify-buffer () |
56fcbd7e | 1188 | ;; Make sure we unfontify etc. in the whole buffer. |
a2b8e66b SM |
1189 | (save-restriction |
1190 | (widen) | |
1191 | (font-lock-unfontify-region (point-min) (point-max)) | |
271c888a | 1192 | (font-lock-after-unfontify-buffer) |
a2b8e66b | 1193 | (setq font-lock-fontified nil))) |
9bfbb130 | 1194 | |
a2b8e66b | 1195 | (defun font-lock-default-fontify-region (beg end loudly) |
ac6e572c SM |
1196 | (save-buffer-state |
1197 | ((parse-sexp-lookup-properties font-lock-syntactic-keywords) | |
1198 | (old-syntax-table (syntax-table))) | |
876f2438 | 1199 | (unwind-protect |
a078558d SM |
1200 | (save-restriction |
1201 | (widen) | |
876f2438 | 1202 | ;; Use the fontification syntax table, if any. |
2e6a15fc SM |
1203 | (when font-lock-syntax-table |
1204 | (set-syntax-table font-lock-syntax-table)) | |
fb0e4f8a RS |
1205 | ;; check to see if we should expand the beg/end area for |
1206 | ;; proper multiline matches | |
f9261020 GM |
1207 | (when (and font-lock-multiline |
1208 | (> beg (point-min)) | |
28a53bc1 SM |
1209 | (get-text-property (1- beg) 'font-lock-multiline)) |
1210 | ;; We are just after or in a multiline match. | |
1211 | (setq beg (or (previous-single-property-change | |
1212 | beg 'font-lock-multiline) | |
ba22aeff SM |
1213 | (point-min))) |
1214 | (goto-char beg) | |
1215 | (setq beg (line-beginning-position))) | |
111c181e GM |
1216 | (when font-lock-multiline |
1217 | (setq end (or (text-property-any end (point-max) | |
1218 | 'font-lock-multiline nil) | |
1219 | (point-max)))) | |
ba22aeff | 1220 | (goto-char end) |
724a330f | 1221 | (setq end (line-beginning-position 2)) |
876f2438 | 1222 | ;; Now do the fontification. |
2e6a15fc | 1223 | (font-lock-unfontify-region beg end) |
ac6e572c SM |
1224 | (when font-lock-syntactic-keywords |
1225 | (font-lock-fontify-syntactic-keywords-region beg end)) | |
2e6a15fc | 1226 | (unless font-lock-keywords-only |
876f2438 SM |
1227 | (font-lock-fontify-syntactically-region beg end loudly)) |
1228 | (font-lock-fontify-keywords-region beg end loudly)) | |
1229 | ;; Clean up. | |
2e6a15fc | 1230 | (set-syntax-table old-syntax-table)))) |
9bfbb130 SM |
1231 | |
1232 | ;; The following must be rethought, since keywords can override fontification. | |
1233 | ; ;; Now scan for keywords, but not if we are inside a comment now. | |
1234 | ; (or (and (not font-lock-keywords-only) | |
019f00d8 | 1235 | ; (let ((state (parse-partial-sexp beg end nil nil |
9bfbb130 SM |
1236 | ; font-lock-cache-state))) |
1237 | ; (or (nth 4 state) (nth 7 state)))) | |
1238 | ; (font-lock-fontify-keywords-region beg end)) | |
1239 | ||
a2b8e66b | 1240 | (defun font-lock-default-unfontify-region (beg end) |
2e6a15fc | 1241 | (save-buffer-state nil |
fb0e4f8a RS |
1242 | (remove-text-properties beg end |
1243 | (if font-lock-syntactic-keywords | |
1244 | '(face nil syntax-table nil font-lock-multiline nil) | |
1245 | '(face nil font-lock-multiline nil))))) | |
9bfbb130 SM |
1246 | |
1247 | ;; Called when any modification is made to buffer text. | |
1248 | (defun font-lock-after-change-function (beg end old-len) | |
46f26fcf SM |
1249 | (let ((inhibit-point-motion-hooks t)) |
1250 | (save-excursion | |
1251 | (save-match-data | |
1252 | ;; Rescan between start of lines enclosing the region. | |
1253 | (font-lock-fontify-region | |
1254 | (progn (goto-char beg) (beginning-of-line) (point)) | |
1255 | (progn (goto-char end) (forward-line 1) (point))))))) | |
a2b8e66b | 1256 | |
a078558d SM |
1257 | (defun font-lock-fontify-block (&optional arg) |
1258 | "Fontify some lines the way `font-lock-fontify-buffer' would. | |
1259 | The lines could be a function or paragraph, or a specified number of lines. | |
a078558d | 1260 | If ARG is given, fontify that many lines before and after point, or 16 lines if |
a465832f SM |
1261 | no ARG is given and `font-lock-mark-block-function' is nil. |
1262 | If `font-lock-mark-block-function' non-nil and no ARG is given, it is used to | |
1263 | delimit the region to fontify." | |
a078558d | 1264 | (interactive "P") |
46f26fcf SM |
1265 | (let ((inhibit-point-motion-hooks t) font-lock-beginning-of-syntax-function |
1266 | deactivate-mark) | |
a078558d SM |
1267 | ;; Make sure we have the right `font-lock-keywords' etc. |
1268 | (if (not font-lock-mode) (font-lock-set-defaults)) | |
a2b8e66b SM |
1269 | (save-excursion |
1270 | (save-match-data | |
1271 | (condition-case error-data | |
a078558d SM |
1272 | (if (or arg (not font-lock-mark-block-function)) |
1273 | (let ((lines (if arg (prefix-numeric-value arg) 16))) | |
1274 | (font-lock-fontify-region | |
1275 | (save-excursion (forward-line (- lines)) (point)) | |
1276 | (save-excursion (forward-line lines) (point)))) | |
1277 | (funcall font-lock-mark-block-function) | |
1278 | (font-lock-fontify-region (point) (mark))) | |
6c0fc428 | 1279 | ((error quit) (message "Fontifying block...%s" error-data))))))) |
a078558d | 1280 | |
94de9afe | 1281 | (define-key facemenu-keymap "\M-g" 'font-lock-fontify-block) |
2d63aa67 SM |
1282 | |
1283 | ;;; End of Fontification functions. | |
9bfbb130 | 1284 | \f |
9bfbb130 SM |
1285 | ;;; Additional text property functions. |
1286 | ||
1c626aaf SM |
1287 | ;; The following text property functions should be builtins. This means they |
1288 | ;; should be written in C and put with all the other text property functions. | |
1289 | ;; In the meantime, those that are used by font-lock.el are defined in Lisp | |
1290 | ;; below and given a `font-lock-' prefix. Those that are not used are defined | |
1291 | ;; in Lisp below and commented out. sm. | |
9bfbb130 | 1292 | |
1c626aaf | 1293 | (defun font-lock-prepend-text-property (start end prop value &optional object) |
9bfbb130 SM |
1294 | "Prepend to one property of the text from START to END. |
1295 | Arguments PROP and VALUE specify the property and value to prepend to the value | |
1c626aaf | 1296 | already in place. The resulting property values are always lists. |
9bfbb130 SM |
1297 | Optional argument OBJECT is the string or buffer containing the text." |
1298 | (let ((val (if (listp value) value (list value))) next prev) | |
1299 | (while (/= start end) | |
1300 | (setq next (next-single-property-change start prop object end) | |
1301 | prev (get-text-property start prop object)) | |
1c626aaf SM |
1302 | (put-text-property start next prop |
1303 | (append val (if (listp prev) prev (list prev))) | |
1304 | object) | |
9bfbb130 SM |
1305 | (setq start next)))) |
1306 | ||
1c626aaf | 1307 | (defun font-lock-append-text-property (start end prop value &optional object) |
9bfbb130 SM |
1308 | "Append to one property of the text from START to END. |
1309 | Arguments PROP and VALUE specify the property and value to append to the value | |
1c626aaf | 1310 | already in place. The resulting property values are always lists. |
9bfbb130 SM |
1311 | Optional argument OBJECT is the string or buffer containing the text." |
1312 | (let ((val (if (listp value) value (list value))) next prev) | |
1313 | (while (/= start end) | |
1314 | (setq next (next-single-property-change start prop object end) | |
1315 | prev (get-text-property start prop object)) | |
1c626aaf SM |
1316 | (put-text-property start next prop |
1317 | (append (if (listp prev) prev (list prev)) val) | |
1318 | object) | |
9bfbb130 | 1319 | (setq start next)))) |
1c626aaf SM |
1320 | |
1321 | (defun font-lock-fillin-text-property (start end prop value &optional object) | |
1322 | "Fill in one property of the text from START to END. | |
1323 | Arguments PROP and VALUE specify the property and value to put where none are | |
1324 | already in place. Therefore existing property values are not overwritten. | |
1325 | Optional argument OBJECT is the string or buffer containing the text." | |
1326 | (let ((start (text-property-any start end prop nil object)) next) | |
1327 | (while start | |
1328 | (setq next (next-single-property-change start prop object end)) | |
1329 | (put-text-property start next prop value object) | |
1330 | (setq start (text-property-any next end prop nil object))))) | |
1331 | ||
1332 | ;; For completeness: this is to `remove-text-properties' as `put-text-property' | |
1333 | ;; is to `add-text-properties', etc. | |
1334 | ;(defun remove-text-property (start end property &optional object) | |
1335 | ; "Remove a property from text from START to END. | |
1336 | ;Argument PROPERTY is the property to remove. | |
1337 | ;Optional argument OBJECT is the string or buffer containing the text. | |
1338 | ;Return t if the property was actually removed, nil otherwise." | |
1339 | ; (remove-text-properties start end (list property) object)) | |
1340 | ||
1341 | ;; For consistency: maybe this should be called `remove-single-property' like | |
1342 | ;; `next-single-property-change' (not `next-single-text-property-change'), etc. | |
1343 | ;(defun remove-single-text-property (start end prop value &optional object) | |
1344 | ; "Remove a specific property value from text from START to END. | |
1345 | ;Arguments PROP and VALUE specify the property and value to remove. The | |
1346 | ;resulting property values are not equal to VALUE nor lists containing VALUE. | |
1347 | ;Optional argument OBJECT is the string or buffer containing the text." | |
1348 | ; (let ((start (text-property-not-all start end prop nil object)) next prev) | |
1349 | ; (while start | |
1350 | ; (setq next (next-single-property-change start prop object end) | |
1351 | ; prev (get-text-property start prop object)) | |
1352 | ; (cond ((and (symbolp prev) (eq value prev)) | |
1353 | ; (remove-text-property start next prop object)) | |
1354 | ; ((and (listp prev) (memq value prev)) | |
1355 | ; (let ((new (delq value prev))) | |
1356 | ; (cond ((null new) | |
1357 | ; (remove-text-property start next prop object)) | |
1358 | ; ((= (length new) 1) | |
1359 | ; (put-text-property start next prop (car new) object)) | |
1360 | ; (t | |
1361 | ; (put-text-property start next prop new object)))))) | |
1362 | ; (setq start (text-property-not-all next end prop nil object))))) | |
2d63aa67 SM |
1363 | |
1364 | ;;; End of Additional text property functions. | |
9bfbb130 | 1365 | \f |
ac6e572c SM |
1366 | ;;; Syntactic regexp fontification functions. |
1367 | ||
1368 | ;; These syntactic keyword pass functions are identical to those keyword pass | |
1369 | ;; functions below, with the following exceptions; (a) they operate on | |
1370 | ;; `font-lock-syntactic-keywords' of course, (b) they are all `defun' as speed | |
1371 | ;; is less of an issue, (c) eval of property value does not occur JIT as speed | |
1372 | ;; is less of an issue, (d) OVERRIDE cannot be `prepend' or `append' as it | |
1373 | ;; makes no sense for `syntax-table' property values, (e) they do not do it | |
1374 | ;; LOUDLY as it is not likely to be intensive. | |
1375 | ||
1376 | (defun font-lock-apply-syntactic-highlight (highlight) | |
1377 | "Apply HIGHLIGHT following a match. | |
1378 | HIGHLIGHT should be of the form MATCH-HIGHLIGHT, | |
1379 | see `font-lock-syntactic-keywords'." | |
1380 | (let* ((match (nth 0 highlight)) | |
1381 | (start (match-beginning match)) (end (match-end match)) | |
1382 | (value (nth 1 highlight)) | |
1383 | (override (nth 2 highlight))) | |
1c172af4 SM |
1384 | (when (and (consp value) (not (numberp (car value)))) |
1385 | (setq value (eval value))) | |
1386 | (when (stringp value) (setq value (string-to-syntax value))) | |
ac6e572c SM |
1387 | (cond ((not start) |
1388 | ;; No match but we might not signal an error. | |
1389 | (or (nth 3 highlight) | |
1390 | (error "No match %d in highlight %S" match highlight))) | |
1391 | ((not override) | |
1392 | ;; Cannot override existing fontification. | |
1393 | (or (text-property-not-all start end 'syntax-table nil) | |
1394 | (put-text-property start end 'syntax-table value))) | |
1395 | ((eq override t) | |
1396 | ;; Override existing fontification. | |
1397 | (put-text-property start end 'syntax-table value)) | |
1398 | ((eq override 'keep) | |
1399 | ;; Keep existing fontification. | |
1400 | (font-lock-fillin-text-property start end 'syntax-table value))))) | |
1401 | ||
1402 | (defun font-lock-fontify-syntactic-anchored-keywords (keywords limit) | |
1403 | "Fontify according to KEYWORDS until LIMIT. | |
1404 | KEYWORDS should be of the form MATCH-ANCHORED, see `font-lock-keywords', | |
1405 | LIMIT can be modified by the value of its PRE-MATCH-FORM." | |
1406 | (let ((matcher (nth 0 keywords)) (lowdarks (nthcdr 3 keywords)) highlights | |
1407 | ;; Evaluate PRE-MATCH-FORM. | |
1408 | (pre-match-value (eval (nth 1 keywords)))) | |
1409 | ;; Set LIMIT to value of PRE-MATCH-FORM or the end of line. | |
1410 | (if (and (numberp pre-match-value) (> pre-match-value (point))) | |
1411 | (setq limit pre-match-value) | |
6e1d0d15 | 1412 | (setq limit (line-end-position))) |
ac6e572c SM |
1413 | (save-match-data |
1414 | ;; Find an occurrence of `matcher' before `limit'. | |
1415 | (while (if (stringp matcher) | |
1416 | (re-search-forward matcher limit t) | |
1417 | (funcall matcher limit)) | |
1418 | ;; Apply each highlight to this instance of `matcher'. | |
1419 | (setq highlights lowdarks) | |
1420 | (while highlights | |
1421 | (font-lock-apply-syntactic-highlight (car highlights)) | |
1422 | (setq highlights (cdr highlights))))) | |
1423 | ;; Evaluate POST-MATCH-FORM. | |
1424 | (eval (nth 2 keywords)))) | |
1425 | ||
1426 | (defun font-lock-fontify-syntactic-keywords-region (start end) | |
1427 | "Fontify according to `font-lock-syntactic-keywords' between START and END. | |
1428 | START should be at the beginning of a line." | |
c0a6a9fe SM |
1429 | ;; Ensure the beginning of the file is properly syntactic-fontified. |
1430 | (when (and font-lock-syntactically-fontified | |
1431 | (< font-lock-syntactically-fontified start)) | |
1432 | (setq start (max font-lock-syntactically-fontified (point-min))) | |
1433 | (setq font-lock-syntactically-fontified end)) | |
ac6e572c SM |
1434 | ;; If `font-lock-syntactic-keywords' is a symbol, get the real keywords. |
1435 | (when (symbolp font-lock-syntactic-keywords) | |
1436 | (setq font-lock-syntactic-keywords (font-lock-eval-keywords | |
1437 | font-lock-syntactic-keywords))) | |
1438 | ;; If `font-lock-syntactic-keywords' is not compiled, compile it. | |
1439 | (unless (eq (car font-lock-syntactic-keywords) t) | |
1440 | (setq font-lock-syntactic-keywords (font-lock-compile-keywords | |
1441 | font-lock-syntactic-keywords))) | |
1442 | ;; Get down to business. | |
1443 | (let ((case-fold-search font-lock-keywords-case-fold-search) | |
1444 | (keywords (cdr font-lock-syntactic-keywords)) | |
1445 | keyword matcher highlights) | |
1446 | (while keywords | |
1447 | ;; Find an occurrence of `matcher' from `start' to `end'. | |
1448 | (setq keyword (car keywords) matcher (car keyword)) | |
1449 | (goto-char start) | |
1450 | (while (if (stringp matcher) | |
1451 | (re-search-forward matcher end t) | |
1452 | (funcall matcher end)) | |
1453 | ;; Apply each highlight to this instance of `matcher', which may be | |
1454 | ;; specific highlights or more keywords anchored to `matcher'. | |
1455 | (setq highlights (cdr keyword)) | |
1456 | (while highlights | |
1457 | (if (numberp (car (car highlights))) | |
1458 | (font-lock-apply-syntactic-highlight (car highlights)) | |
1459 | (font-lock-fontify-syntactic-anchored-keywords (car highlights) | |
1460 | end)) | |
1461 | (setq highlights (cdr highlights)))) | |
1462 | (setq keywords (cdr keywords))))) | |
1463 | ||
1464 | ;;; End of Syntactic regexp fontification functions. | |
1465 | \f | |
1466 | ;;; Syntactic fontification functions. | |
1467 | ||
1468 | ;; These record the parse state at a particular position, always the start of a | |
1469 | ;; line. Used to make `font-lock-fontify-syntactically-region' faster. | |
1470 | ;; Previously, `font-lock-cache-position' was just a buffer position. However, | |
1471 | ;; under certain situations, this occasionally resulted in mis-fontification. | |
1472 | ;; I think the "situations" were deletion with Lazy Lock mode's deferral. sm. | |
1473 | (defvar font-lock-cache-state nil) | |
1474 | (defvar font-lock-cache-position nil) | |
1475 | ||
1476 | (defun font-lock-fontify-syntactically-region (start end &optional loudly) | |
1477 | "Put proper face on each string and comment between START and END. | |
1478 | START should be at the beginning of a line." | |
1479 | (let ((cache (marker-position font-lock-cache-position)) | |
1c172af4 | 1480 | state face beg) |
ac6e572c SM |
1481 | (if loudly (message "Fontifying %s... (syntactically...)" (buffer-name))) |
1482 | (goto-char start) | |
1483 | ;; | |
1484 | ;; Find the state at the `beginning-of-line' before `start'. | |
1485 | (if (eq start cache) | |
1486 | ;; Use the cache for the state of `start'. | |
1487 | (setq state font-lock-cache-state) | |
1488 | ;; Find the state of `start'. | |
1489 | (if (null font-lock-beginning-of-syntax-function) | |
1490 | ;; Use the state at the previous cache position, if any, or | |
1491 | ;; otherwise calculate from `point-min'. | |
1492 | (if (or (null cache) (< start cache)) | |
1493 | (setq state (parse-partial-sexp (point-min) start)) | |
1494 | (setq state (parse-partial-sexp cache start nil nil | |
1495 | font-lock-cache-state))) | |
1496 | ;; Call the function to move outside any syntactic block. | |
1497 | (funcall font-lock-beginning-of-syntax-function) | |
1498 | (setq state (parse-partial-sexp (point) start))) | |
1499 | ;; Cache the state and position of `start'. | |
1500 | (setq font-lock-cache-state state) | |
1501 | (set-marker font-lock-cache-position start)) | |
1502 | ;; | |
1503 | ;; If the region starts inside a string or comment, show the extent of it. | |
1504 | (when (or (nth 3 state) (nth 4 state)) | |
1c172af4 | 1505 | (setq face (funcall font-lock-syntactic-face-function state) beg (point)) |
ac6e572c | 1506 | (setq state (parse-partial-sexp (point) end nil nil state 'syntax-table)) |
1c172af4 | 1507 | (put-text-property beg (point) 'face face)) |
ac6e572c SM |
1508 | ;; |
1509 | ;; Find each interesting place between here and `end'. | |
1510 | (while (and (< (point) end) | |
1511 | (progn | |
1512 | (setq state (parse-partial-sexp (point) end nil nil state | |
1513 | 'syntax-table)) | |
1514 | (or (nth 3 state) (nth 4 state)))) | |
1c172af4 SM |
1515 | (setq face (funcall font-lock-syntactic-face-function state) |
1516 | beg (nth 8 state)) | |
ac6e572c | 1517 | (setq state (parse-partial-sexp (point) end nil nil state 'syntax-table)) |
1c172af4 | 1518 | (put-text-property beg (point) 'face face)))) |
ac6e572c SM |
1519 | |
1520 | ;;; End of Syntactic fontification functions. | |
1521 | \f | |
1522 | ;;; Keyword regexp fontification functions. | |
9bfbb130 SM |
1523 | |
1524 | (defsubst font-lock-apply-highlight (highlight) | |
1525 | "Apply HIGHLIGHT following a match. | |
1526 | HIGHLIGHT should be of the form MATCH-HIGHLIGHT, see `font-lock-keywords'." | |
1527 | (let* ((match (nth 0 highlight)) | |
1528 | (start (match-beginning match)) (end (match-end match)) | |
1529 | (override (nth 2 highlight))) | |
1530 | (cond ((not start) | |
1531 | ;; No match but we might not signal an error. | |
1532 | (or (nth 3 highlight) | |
1533 | (error "No match %d in highlight %S" match highlight))) | |
1534 | ((not override) | |
1535 | ;; Cannot override existing fontification. | |
1536 | (or (text-property-not-all start end 'face nil) | |
1537 | (put-text-property start end 'face (eval (nth 1 highlight))))) | |
1538 | ((eq override t) | |
1539 | ;; Override existing fontification. | |
1540 | (put-text-property start end 'face (eval (nth 1 highlight)))) | |
9bfbb130 SM |
1541 | ((eq override 'prepend) |
1542 | ;; Prepend to existing fontification. | |
1c626aaf | 1543 | (font-lock-prepend-text-property start end 'face (eval (nth 1 highlight)))) |
9bfbb130 SM |
1544 | ((eq override 'append) |
1545 | ;; Append to existing fontification. | |
1c626aaf | 1546 | (font-lock-append-text-property start end 'face (eval (nth 1 highlight)))) |
c1f2ffc8 SM |
1547 | ((eq override 'keep) |
1548 | ;; Keep existing fontification. | |
1c626aaf | 1549 | (font-lock-fillin-text-property start end 'face (eval (nth 1 highlight))))))) |
9bfbb130 SM |
1550 | |
1551 | (defsubst font-lock-fontify-anchored-keywords (keywords limit) | |
1552 | "Fontify according to KEYWORDS until LIMIT. | |
56fcbd7e SM |
1553 | KEYWORDS should be of the form MATCH-ANCHORED, see `font-lock-keywords', |
1554 | LIMIT can be modified by the value of its PRE-MATCH-FORM." | |
1555 | (let ((matcher (nth 0 keywords)) (lowdarks (nthcdr 3 keywords)) highlights | |
fb0e4f8a | 1556 | (lead-start (match-beginning 0)) |
56fcbd7e SM |
1557 | ;; Evaluate PRE-MATCH-FORM. |
1558 | (pre-match-value (eval (nth 1 keywords)))) | |
1559 | ;; Set LIMIT to value of PRE-MATCH-FORM or the end of line. | |
fb0e4f8a | 1560 | (if (not (and (numberp pre-match-value) (> pre-match-value (point)))) |
6e1d0d15 | 1561 | (setq limit (line-end-position)) |
fb0e4f8a | 1562 | (setq limit pre-match-value) |
ba22aeff | 1563 | (when (and font-lock-multiline (>= limit (line-beginning-position 2))) |
fb0e4f8a | 1564 | ;; this is a multiline anchored match |
ba22aeff SM |
1565 | ;; (setq font-lock-multiline t) |
1566 | (put-text-property (if (= limit (line-beginning-position 2)) | |
1567 | (1- limit) | |
1568 | (min lead-start (point))) | |
1569 | limit | |
28a53bc1 | 1570 | 'font-lock-multiline t))) |
9bfbb130 | 1571 | (save-match-data |
876f2438 | 1572 | ;; Find an occurrence of `matcher' before `limit'. |
afa18a4e SM |
1573 | (while (and (< (point) limit) |
1574 | (if (stringp matcher) | |
1575 | (re-search-forward matcher limit t) | |
1576 | (funcall matcher limit))) | |
876f2438 | 1577 | ;; Apply each highlight to this instance of `matcher'. |
9bfbb130 SM |
1578 | (setq highlights lowdarks) |
1579 | (while highlights | |
1580 | (font-lock-apply-highlight (car highlights)) | |
1581 | (setq highlights (cdr highlights))))) | |
876f2438 | 1582 | ;; Evaluate POST-MATCH-FORM. |
9bfbb130 SM |
1583 | (eval (nth 2 keywords)))) |
1584 | ||
1585 | (defun font-lock-fontify-keywords-region (start end &optional loudly) | |
1586 | "Fontify according to `font-lock-keywords' between START and END. | |
1587 | START should be at the beginning of a line." | |
ac6e572c | 1588 | (unless (eq (car font-lock-keywords) t) |
55015061 | 1589 | (setq font-lock-keywords (font-lock-compile-keywords font-lock-keywords))) |
9bfbb130 | 1590 | (let ((case-fold-search font-lock-keywords-case-fold-search) |
55015061 | 1591 | (keywords (cdr font-lock-keywords)) |
9bfbb130 | 1592 | (bufname (buffer-name)) (count 0) |
876f2438 SM |
1593 | keyword matcher highlights) |
1594 | ;; | |
1595 | ;; Fontify each item in `font-lock-keywords' from `start' to `end'. | |
1596 | (while keywords | |
1597 | (if loudly (message "Fontifying %s... (regexps..%s)" bufname | |
2e6a15fc | 1598 | (make-string (incf count) ?.))) |
9bfbb130 | 1599 | ;; |
876f2438 SM |
1600 | ;; Find an occurrence of `matcher' from `start' to `end'. |
1601 | (setq keyword (car keywords) matcher (car keyword)) | |
1602 | (goto-char start) | |
e7f07c2c GM |
1603 | (while (and (< (point) end) |
1604 | (if (stringp matcher) | |
1605 | (re-search-forward matcher end t) | |
1606 | (funcall matcher end))) | |
041470d2 SM |
1607 | (when (and font-lock-multiline |
1608 | (match-beginning 0) | |
ba22aeff SM |
1609 | (>= (point) |
1610 | (save-excursion (goto-char (match-beginning 0)) | |
1611 | (forward-line 1) (point)))) | |
fb0e4f8a | 1612 | ;; this is a multiline regexp match |
ba22aeff SM |
1613 | ;; (setq font-lock-multiline t) |
1614 | (put-text-property (if (= (point) | |
1615 | (save-excursion | |
1616 | (goto-char (match-beginning 0)) | |
1617 | (forward-line 1) (point))) | |
1618 | (1- (point)) | |
1619 | (match-beginning 0)) | |
1620 | (point) | |
fb0e4f8a | 1621 | 'font-lock-multiline t)) |
876f2438 SM |
1622 | ;; Apply each highlight to this instance of `matcher', which may be |
1623 | ;; specific highlights or more keywords anchored to `matcher'. | |
1624 | (setq highlights (cdr keyword)) | |
1625 | (while highlights | |
1626 | (if (numberp (car (car highlights))) | |
1627 | (font-lock-apply-highlight (car highlights)) | |
1628 | (font-lock-fontify-anchored-keywords (car highlights) end)) | |
1629 | (setq highlights (cdr highlights)))) | |
1630 | (setq keywords (cdr keywords))))) | |
2d63aa67 | 1631 | |
ac6e572c | 1632 | ;;; End of Keyword regexp fontification functions. |
9bfbb130 SM |
1633 | \f |
1634 | ;; Various functions. | |
1635 | ||
55015061 | 1636 | (defun font-lock-compile-keywords (keywords) |
019f00d8 DL |
1637 | "Compile KEYWORDS into the form (t KEYWORD ...). |
1638 | Here KEYWORD is of the form (MATCHER HIGHLIGHT ...) as shown in the | |
1639 | `font-lock-keywords' doc string." | |
55015061 SM |
1640 | (if (eq (car-safe keywords) t) |
1641 | keywords | |
1642 | (cons t (mapcar 'font-lock-compile-keyword keywords)))) | |
a2b8e66b SM |
1643 | |
1644 | (defun font-lock-compile-keyword (keyword) | |
c1f2ffc8 | 1645 | (cond ((nlistp keyword) ; MATCHER |
a2b8e66b | 1646 | (list keyword '(0 font-lock-keyword-face))) |
c1f2ffc8 | 1647 | ((eq (car keyword) 'eval) ; (eval . FORM) |
a2b8e66b | 1648 | (font-lock-compile-keyword (eval (cdr keyword)))) |
c1f2ffc8 SM |
1649 | ((eq (car-safe (cdr keyword)) 'quote) ; (MATCHER . 'FORM) |
1650 | ;; If FORM is a FACENAME then quote it. Otherwise ignore the quote. | |
1651 | (if (symbolp (nth 2 keyword)) | |
1652 | (list (car keyword) (list 0 (cdr keyword))) | |
1653 | (font-lock-compile-keyword (cons (car keyword) (nth 2 keyword))))) | |
1654 | ((numberp (cdr keyword)) ; (MATCHER . MATCH) | |
a2b8e66b | 1655 | (list (car keyword) (list (cdr keyword) 'font-lock-keyword-face))) |
c1f2ffc8 | 1656 | ((symbolp (cdr keyword)) ; (MATCHER . FACENAME) |
a2b8e66b | 1657 | (list (car keyword) (list 0 (cdr keyword)))) |
c1f2ffc8 | 1658 | ((nlistp (nth 1 keyword)) ; (MATCHER . HIGHLIGHT) |
a2b8e66b | 1659 | (list (car keyword) (cdr keyword))) |
c1f2ffc8 | 1660 | (t ; (MATCHER HIGHLIGHT ...) |
a2b8e66b | 1661 | keyword))) |
d46c21ec | 1662 | |
ac6e572c | 1663 | (defun font-lock-eval-keywords (keywords) |
019f00d8 | 1664 | "Evalulate KEYWORDS if a function (funcall) or variable (eval) name." |
46f26fcf SM |
1665 | (if (listp keywords) |
1666 | keywords | |
1667 | (font-lock-eval-keywords (if (fboundp keywords) | |
1668 | (funcall keywords) | |
1669 | (eval keywords))))) | |
ac6e572c | 1670 | |
343204bd | 1671 | (defun font-lock-value-in-major-mode (alist) |
019f00d8 DL |
1672 | "Return value in ALIST for `major-mode', or ALIST if it is not an alist. |
1673 | Structure is ((MAJOR-MODE . VALUE) ...) where MAJOR-MODE may be t." | |
343204bd SM |
1674 | (if (consp alist) |
1675 | (cdr (or (assq major-mode alist) (assq t alist))) | |
1676 | alist)) | |
1677 | ||
d46c21ec | 1678 | (defun font-lock-choose-keywords (keywords level) |
019f00d8 DL |
1679 | "Return LEVELth element of KEYWORDS. |
1680 | A LEVEL of nil is equal to a LEVEL of 0, a LEVEL of t is equal to | |
1681 | \(1- (length KEYWORDS))." | |
fd612dd9 | 1682 | (cond ((not (and (listp keywords) (symbolp (car keywords)))) |
343204bd SM |
1683 | keywords) |
1684 | ((numberp level) | |
1685 | (or (nth level keywords) (car (reverse keywords)))) | |
1686 | ((eq level t) | |
1687 | (car (reverse keywords))) | |
1688 | (t | |
1689 | (car keywords)))) | |
d46c21ec | 1690 | |
2e6a15fc SM |
1691 | (defvar font-lock-set-defaults nil) ; Whether we have set up defaults. |
1692 | ||
d46c21ec SM |
1693 | (defun font-lock-set-defaults () |
1694 | "Set fontification defaults appropriately for this mode. | |
a2b8e66b SM |
1695 | Sets various variables using `font-lock-defaults' (or, if nil, using |
1696 | `font-lock-defaults-alist') and `font-lock-maximum-decoration'." | |
6e1d0d15 | 1697 | ;; Set fontification defaults iff not previously set. |
2e6a15fc SM |
1698 | (unless font-lock-set-defaults |
1699 | (set (make-local-variable 'font-lock-set-defaults) t) | |
1700 | (set (make-local-variable 'font-lock-cache-state) nil) | |
1701 | (set (make-local-variable 'font-lock-cache-position) (make-marker)) | |
6e1d0d15 SM |
1702 | (make-local-variable 'font-lock-fontified) |
1703 | (make-local-variable 'font-lock-multiline) | |
2e6a15fc SM |
1704 | (let* ((defaults (or font-lock-defaults |
1705 | (cdr (assq major-mode font-lock-defaults-alist)))) | |
1706 | (keywords | |
1707 | (font-lock-choose-keywords (nth 0 defaults) | |
c1f2ffc8 | 1708 | (font-lock-value-in-major-mode font-lock-maximum-decoration))) |
76f5e2af GM |
1709 | (local (cdr (assq major-mode font-lock-keywords-alist))) |
1710 | (removed-keywords | |
1711 | (cdr-safe (assq major-mode font-lock-removed-keywords-alist)))) | |
2e6a15fc | 1712 | ;; Regexp fontification? |
2d63aa67 | 1713 | (set (make-local-variable 'font-lock-keywords) |
ac6e572c | 1714 | (font-lock-compile-keywords (font-lock-eval-keywords keywords))) |
c1f2ffc8 SM |
1715 | ;; Local fontification? |
1716 | (while local | |
1717 | (font-lock-add-keywords nil (car (car local)) (cdr (car local))) | |
1718 | (setq local (cdr local))) | |
76f5e2af GM |
1719 | (when removed-keywords |
1720 | (font-lock-remove-keywords nil removed-keywords)) | |
2e6a15fc SM |
1721 | ;; Syntactic fontification? |
1722 | (when (nth 1 defaults) | |
1723 | (set (make-local-variable 'font-lock-keywords-only) t)) | |
1724 | ;; Case fold during regexp fontification? | |
1725 | (when (nth 2 defaults) | |
1726 | (set (make-local-variable 'font-lock-keywords-case-fold-search) t)) | |
1727 | ;; Syntax table for regexp and syntactic fontification? | |
1728 | (when (nth 3 defaults) | |
1729 | (let ((slist (nth 3 defaults))) | |
1730 | (set (make-local-variable 'font-lock-syntax-table) | |
1731 | (copy-syntax-table (syntax-table))) | |
1732 | (while slist | |
1733 | ;; The character to modify may be a single CHAR or a STRING. | |
1734 | (let ((chars (if (numberp (car (car slist))) | |
1735 | (list (car (car slist))) | |
1736 | (mapcar 'identity (car (car slist))))) | |
1737 | (syntax (cdr (car slist)))) | |
1738 | (while chars | |
68c67d1f | 1739 | (modify-syntax-entry (car chars) syntax font-lock-syntax-table) |
2e6a15fc SM |
1740 | (setq chars (cdr chars))) |
1741 | (setq slist (cdr slist)))))) | |
1742 | ;; Syntax function for syntactic fontification? | |
1743 | (when (nth 4 defaults) | |
1744 | (set (make-local-variable 'font-lock-beginning-of-syntax-function) | |
1745 | (nth 4 defaults))) | |
1746 | ;; Variable alist? | |
724a330f SM |
1747 | (dolist (x (nthcdr 5 defaults)) |
1748 | (let ((variable (car x)) (value (cdr x))) | |
1749 | (unless (boundp variable) | |
1750 | (set variable nil)) ;why ? | |
1751 | (set (make-local-variable variable) value)))))) | |
a2b8e66b SM |
1752 | |
1753 | (defun font-lock-unset-defaults () | |
019f00d8 | 1754 | "Unset fontification defaults. See function `font-lock-set-defaults'." |
2e6a15fc SM |
1755 | (setq font-lock-set-defaults nil |
1756 | font-lock-keywords nil | |
a2b8e66b SM |
1757 | font-lock-keywords-only nil |
1758 | font-lock-keywords-case-fold-search nil | |
1759 | font-lock-syntax-table nil | |
a078558d SM |
1760 | font-lock-beginning-of-syntax-function nil) |
1761 | (let* ((defaults (or font-lock-defaults | |
1762 | (cdr (assq major-mode font-lock-defaults-alist)))) | |
1763 | (alist (nthcdr 5 defaults))) | |
1764 | (while alist | |
1765 | (set (car (car alist)) (default-value (car (car alist)))) | |
1766 | (setq alist (cdr alist))))) | |
030f4a35 | 1767 | \f |
2d63aa67 | 1768 | ;;; Colour etc. support. |
9bfbb130 | 1769 | |
2273c36b | 1770 | ;; Originally face attributes were specified via `font-lock-face-attributes'. |
23a0e11b | 1771 | ;; Users then changed the default face attributes by setting that variable. |
2273c36b SM |
1772 | ;; However, we try and be back-compatible and respect its value if set except |
1773 | ;; for faces where M-x customize has been used to save changes for the face. | |
1774 | (when (boundp 'font-lock-face-attributes) | |
1775 | (let ((face-attributes font-lock-face-attributes)) | |
1776 | (while face-attributes | |
1777 | (let* ((face-attribute (pop face-attributes)) | |
1778 | (face (car face-attribute))) | |
1779 | ;; Rustle up a `defface' SPEC from a `font-lock-face-attributes' entry. | |
1780 | (unless (get face 'saved-face) | |
1781 | (let ((foreground (nth 1 face-attribute)) | |
1782 | (background (nth 2 face-attribute)) | |
1783 | (bold-p (nth 3 face-attribute)) | |
1784 | (italic-p (nth 4 face-attribute)) | |
1785 | (underline-p (nth 5 face-attribute)) | |
1786 | face-spec) | |
1787 | (when foreground | |
1788 | (setq face-spec (cons ':foreground (cons foreground face-spec)))) | |
1789 | (when background | |
1790 | (setq face-spec (cons ':background (cons background face-spec)))) | |
1791 | (when bold-p | |
1792 | (setq face-spec (append '(:bold t) face-spec))) | |
1793 | (when italic-p | |
1794 | (setq face-spec (append '(:italic t) face-spec))) | |
1795 | (when underline-p | |
1796 | (setq face-spec (append '(:underline t) face-spec))) | |
1797 | (custom-declare-face face (list (list t face-spec)) nil))))))) | |
1798 | ||
1799 | ;; But now we do it the custom way. Note that `defface' will not overwrite any | |
1800 | ;; faces declared above via `custom-declare-face'. | |
55015061 | 1801 | (defface font-lock-comment-face |
8379c868 EZ |
1802 | '((((type tty pc) (class color) (background light)) (:foreground "red")) |
1803 | (((type tty pc) (class color) (background dark)) (:foreground "lightred")) | |
e7f07c2c | 1804 | (((class grayscale) (background light)) |
55015061 SM |
1805 | (:foreground "DimGray" :bold t :italic t)) |
1806 | (((class grayscale) (background dark)) | |
1807 | (:foreground "LightGray" :bold t :italic t)) | |
1808 | (((class color) (background light)) (:foreground "Firebrick")) | |
86b7fcbb | 1809 | (((class color) (background dark)) (:foreground "chocolate1")) |
55015061 SM |
1810 | (t (:bold t :italic t))) |
1811 | "Font Lock mode face used to highlight comments." | |
2273c36b | 1812 | :group 'font-lock-highlighting-faces) |
55015061 SM |
1813 | |
1814 | (defface font-lock-string-face | |
e7f07c2c GM |
1815 | '((((type tty) (class color)) (:foreground "green")) |
1816 | (((class grayscale) (background light)) (:foreground "DimGray" :italic t)) | |
55015061 SM |
1817 | (((class grayscale) (background dark)) (:foreground "LightGray" :italic t)) |
1818 | (((class color) (background light)) (:foreground "RosyBrown")) | |
1819 | (((class color) (background dark)) (:foreground "LightSalmon")) | |
1820 | (t (:italic t))) | |
1821 | "Font Lock mode face used to highlight strings." | |
2273c36b | 1822 | :group 'font-lock-highlighting-faces) |
55015061 | 1823 | |
1c172af4 SM |
1824 | (defface font-lock-doc-face |
1825 | '((t :inherit font-lock-string-face)) | |
1826 | "Font Lock mode face used to highlight documentation." | |
1827 | :group 'font-lock-highlighting-faces) | |
1828 | ||
55015061 | 1829 | (defface font-lock-keyword-face |
e7f07c2c GM |
1830 | '((((type tty) (class color)) (:foreground "cyan" :weight bold)) |
1831 | (((class grayscale) (background light)) (:foreground "LightGray" :bold t)) | |
55015061 SM |
1832 | (((class grayscale) (background dark)) (:foreground "DimGray" :bold t)) |
1833 | (((class color) (background light)) (:foreground "Purple")) | |
1834 | (((class color) (background dark)) (:foreground "Cyan")) | |
1835 | (t (:bold t))) | |
1836 | "Font Lock mode face used to highlight keywords." | |
2273c36b | 1837 | :group 'font-lock-highlighting-faces) |
55015061 SM |
1838 | |
1839 | (defface font-lock-builtin-face | |
e7f07c2c GM |
1840 | '((((type tty) (class color)) (:foreground "blue" :weight light)) |
1841 | (((class grayscale) (background light)) (:foreground "LightGray" :bold t)) | |
55015061 SM |
1842 | (((class grayscale) (background dark)) (:foreground "DimGray" :bold t)) |
1843 | (((class color) (background light)) (:foreground "Orchid")) | |
1844 | (((class color) (background dark)) (:foreground "LightSteelBlue")) | |
1845 | (t (:bold t))) | |
1846 | "Font Lock mode face used to highlight builtins." | |
2273c36b | 1847 | :group 'font-lock-highlighting-faces) |
55015061 SM |
1848 | |
1849 | (defface font-lock-function-name-face | |
e7f07c2c GM |
1850 | '((((type tty) (class color)) (:foreground "blue" :weight bold)) |
1851 | (((class color) (background light)) (:foreground "Blue")) | |
55015061 | 1852 | (((class color) (background dark)) (:foreground "LightSkyBlue")) |
ac6e572c | 1853 | (t (:inverse-video t :bold t))) |
55015061 | 1854 | "Font Lock mode face used to highlight function names." |
2273c36b | 1855 | :group 'font-lock-highlighting-faces) |
55015061 SM |
1856 | |
1857 | (defface font-lock-variable-name-face | |
e7f07c2c GM |
1858 | '((((type tty) (class color)) (:foreground "yellow" :weight light)) |
1859 | (((class grayscale) (background light)) | |
55015061 SM |
1860 | (:foreground "Gray90" :bold t :italic t)) |
1861 | (((class grayscale) (background dark)) | |
1862 | (:foreground "DimGray" :bold t :italic t)) | |
1863 | (((class color) (background light)) (:foreground "DarkGoldenrod")) | |
1864 | (((class color) (background dark)) (:foreground "LightGoldenrod")) | |
1865 | (t (:bold t :italic t))) | |
1866 | "Font Lock mode face used to highlight variable names." | |
2273c36b | 1867 | :group 'font-lock-highlighting-faces) |
55015061 SM |
1868 | |
1869 | (defface font-lock-type-face | |
e7f07c2c GM |
1870 | '((((type tty) (class color)) (:foreground "green")) |
1871 | (((class grayscale) (background light)) (:foreground "Gray90" :bold t)) | |
55015061 | 1872 | (((class grayscale) (background dark)) (:foreground "DimGray" :bold t)) |
46f26fcf | 1873 | (((class color) (background light)) (:foreground "ForestGreen")) |
55015061 SM |
1874 | (((class color) (background dark)) (:foreground "PaleGreen")) |
1875 | (t (:bold t :underline t))) | |
8acf2292 | 1876 | "Font Lock mode face used to highlight type and classes." |
2273c36b | 1877 | :group 'font-lock-highlighting-faces) |
55015061 | 1878 | |
8acf2292 | 1879 | (defface font-lock-constant-face |
e7f07c2c GM |
1880 | '((((type tty) (class color)) (:foreground "magenta")) |
1881 | (((class grayscale) (background light)) | |
55015061 SM |
1882 | (:foreground "LightGray" :bold t :underline t)) |
1883 | (((class grayscale) (background dark)) | |
1884 | (:foreground "Gray50" :bold t :underline t)) | |
1885 | (((class color) (background light)) (:foreground "CadetBlue")) | |
1886 | (((class color) (background dark)) (:foreground "Aquamarine")) | |
1887 | (t (:bold t :underline t))) | |
8acf2292 | 1888 | "Font Lock mode face used to highlight constants and labels." |
2273c36b | 1889 | :group 'font-lock-highlighting-faces) |
55015061 SM |
1890 | |
1891 | (defface font-lock-warning-face | |
e7f07c2c GM |
1892 | '((((type tty) (class color)) (:foreground "red")) |
1893 | (((class color) (background light)) (:foreground "Red" :bold t)) | |
55015061 | 1894 | (((class color) (background dark)) (:foreground "Pink" :bold t)) |
ac6e572c | 1895 | (t (:inverse-video t :bold t))) |
55015061 | 1896 | "Font Lock mode face used to highlight warnings." |
2273c36b | 1897 | :group 'font-lock-highlighting-faces) |
2d63aa67 SM |
1898 | |
1899 | ;;; End of Colour etc. support. | |
9bfbb130 | 1900 | \f |
56fcbd7e SM |
1901 | ;;; Menu support. |
1902 | ||
1903 | ;; This section of code is commented out because Emacs does not have real menu | |
1904 | ;; buttons. (We can mimic them by putting "( ) " or "(X) " at the beginning of | |
1905 | ;; the menu entry text, but with Xt it looks both ugly and embarrassingly | |
1906 | ;; amateur.) If/When Emacs gets real menus buttons, put in menu-bar.el after | |
1907 | ;; the entry for "Text Properties" something like: | |
1908 | ;; | |
1909 | ;; (define-key menu-bar-edit-menu [font-lock] | |
9c8de95c | 1910 | ;; (cons "Syntax Highlighting" font-lock-menu)) |
56fcbd7e SM |
1911 | ;; |
1912 | ;; and remove a single ";" from the beginning of each line in the rest of this | |
1913 | ;; section. Probably the mechanism for telling the menu code what are menu | |
1914 | ;; buttons and when they are on or off needs tweaking. I have assumed that the | |
1915 | ;; mechanism is via `menu-toggle' and `menu-selected' symbol properties. sm. | |
1916 | ||
1917 | ;;;;###autoload | |
1918 | ;(progn | |
1919 | ; ;; Make the Font Lock menu. | |
1920 | ; (defvar font-lock-menu (make-sparse-keymap "Syntax Highlighting")) | |
1921 | ; ;; Add the menu items in reverse order. | |
1922 | ; (define-key font-lock-menu [fontify-less] | |
1923 | ; '("Less In Current Buffer" . font-lock-fontify-less)) | |
1924 | ; (define-key font-lock-menu [fontify-more] | |
1925 | ; '("More In Current Buffer" . font-lock-fontify-more)) | |
1926 | ; (define-key font-lock-menu [font-lock-sep] | |
1927 | ; '("--")) | |
1928 | ; (define-key font-lock-menu [font-lock-mode] | |
1929 | ; '("In Current Buffer" . font-lock-mode)) | |
1930 | ; (define-key font-lock-menu [global-font-lock-mode] | |
1931 | ; '("In All Buffers" . global-font-lock-mode))) | |
1932 | ; | |
1933 | ;;;;###autoload | |
1934 | ;(progn | |
1935 | ; ;; We put the appropriate `menu-enable' etc. symbol property values on when | |
1936 | ; ;; font-lock.el is loaded, so we don't need to autoload the three variables. | |
1937 | ; (put 'global-font-lock-mode 'menu-toggle t) | |
1938 | ; (put 'font-lock-mode 'menu-toggle t) | |
1939 | ; (put 'font-lock-fontify-more 'menu-enable '(identity)) | |
1940 | ; (put 'font-lock-fontify-less 'menu-enable '(identity))) | |
1941 | ; | |
1942 | ;;; Put the appropriate symbol property values on now. See above. | |
9c8de95c | 1943 | ;(put 'global-font-lock-mode 'menu-selected 'global-font-lock-mode) |
56fcbd7e SM |
1944 | ;(put 'font-lock-mode 'menu-selected 'font-lock-mode) |
1945 | ;(put 'font-lock-fontify-more 'menu-enable '(nth 2 font-lock-fontify-level)) | |
1946 | ;(put 'font-lock-fontify-less 'menu-enable '(nth 1 font-lock-fontify-level)) | |
1947 | ; | |
1948 | ;(defvar font-lock-fontify-level nil) ; For less/more fontification. | |
1949 | ; | |
1950 | ;(defun font-lock-fontify-level (level) | |
1951 | ; (let ((font-lock-maximum-decoration level)) | |
1952 | ; (when font-lock-mode | |
1953 | ; (font-lock-mode)) | |
1954 | ; (font-lock-mode) | |
1955 | ; (when font-lock-verbose | |
1956 | ; (message "Fontifying %s... level %d" (buffer-name) level)))) | |
1957 | ; | |
1958 | ;(defun font-lock-fontify-less () | |
1959 | ; "Fontify the current buffer with less decoration. | |
1960 | ;See `font-lock-maximum-decoration'." | |
1961 | ; (interactive) | |
1962 | ; ;; Check in case we get called interactively. | |
1963 | ; (if (nth 1 font-lock-fontify-level) | |
1964 | ; (font-lock-fontify-level (1- (car font-lock-fontify-level))) | |
1965 | ; (error "No less decoration"))) | |
1966 | ; | |
1967 | ;(defun font-lock-fontify-more () | |
1968 | ; "Fontify the current buffer with more decoration. | |
1969 | ;See `font-lock-maximum-decoration'." | |
1970 | ; (interactive) | |
1971 | ; ;; Check in case we get called interactively. | |
1972 | ; (if (nth 2 font-lock-fontify-level) | |
1973 | ; (font-lock-fontify-level (1+ (car font-lock-fontify-level))) | |
1974 | ; (error "No more decoration"))) | |
1975 | ; | |
1976 | ;;; This should be called by `font-lock-set-defaults'. | |
1977 | ;(defun font-lock-set-menu () | |
1978 | ; ;; Activate less/more fontification entries if there are multiple levels for | |
1979 | ; ;; the current buffer. Sets `font-lock-fontify-level' to be of the form | |
1980 | ; ;; (CURRENT-LEVEL IS-LOWER-LEVEL-P IS-HIGHER-LEVEL-P) for menu activation. | |
1981 | ; (let ((keywords (or (nth 0 font-lock-defaults) | |
1982 | ; (nth 1 (assq major-mode font-lock-defaults-alist)))) | |
1983 | ; (level (font-lock-value-in-major-mode font-lock-maximum-decoration))) | |
1984 | ; (make-local-variable 'font-lock-fontify-level) | |
1985 | ; (if (or (symbolp keywords) (= (length keywords) 1)) | |
1986 | ; (font-lock-unset-menu) | |
1987 | ; (cond ((eq level t) | |
1988 | ; (setq level (1- (length keywords)))) | |
1989 | ; ((or (null level) (zerop level)) | |
1990 | ; ;; The default level is usually, but not necessarily, level 1. | |
1991 | ; (setq level (- (length keywords) | |
1992 | ; (length (member (eval (car keywords)) | |
1993 | ; (mapcar 'eval (cdr keywords)))))))) | |
1994 | ; (setq font-lock-fontify-level (list level (> level 1) | |
1995 | ; (< level (1- (length keywords)))))))) | |
1996 | ; | |
1997 | ;;; This should be called by `font-lock-unset-defaults'. | |
1998 | ;(defun font-lock-unset-menu () | |
1999 | ; ;; Deactivate less/more fontification entries. | |
2000 | ; (setq font-lock-fontify-level nil)) | |
2d63aa67 SM |
2001 | |
2002 | ;;; End of Menu support. | |
56fcbd7e | 2003 | \f |
9bfbb130 | 2004 | ;;; Various regexp information shared by several modes. |
a1eb1cf1 | 2005 | ;;; Information specific to a single mode should go in its load library. |
030f4a35 | 2006 | |
1c626aaf | 2007 | ;; Font Lock support for C, C++, Objective-C and Java modes will one day be in |
56fcbd7e SM |
2008 | ;; some cc-font.el (and required by cc-mode.el). However, the below function |
2009 | ;; should stay in font-lock.el, since it is used by other libraries. sm. | |
2e6a15fc | 2010 | |
c1f2ffc8 | 2011 | (defun font-lock-match-c-style-declaration-item-and-skip-to-next (limit) |
2e6a15fc | 2012 | "Match, and move over, any declaration/definition item after point. |
c1f2ffc8 SM |
2013 | Matches after point, but ignores leading whitespace and `*' characters. |
2014 | Does not move further than LIMIT. | |
2015 | ||
ac6e572c SM |
2016 | The expected syntax of a declaration/definition item is `word' (preceded by |
2017 | optional whitespace and `*' characters and proceeded by optional whitespace) | |
2018 | optionally followed by a `('. Everything following the item (but belonging to | |
2019 | it) is expected to by skip-able by `scan-sexps', and items are expected to be | |
2020 | separated with a `,' and to be terminated with a `;'. | |
c1f2ffc8 SM |
2021 | |
2022 | Thus the regexp matches after point: word ( | |
2023 | ^^^^ ^ | |
2024 | Where the match subexpressions are: 1 2 | |
2025 | ||
2026 | The item is delimited by (match-beginning 1) and (match-end 1). | |
2027 | If (match-beginning 2) is non-nil, the item is followed by a `('. | |
2028 | ||
2029 | This function could be MATCHER in a MATCH-ANCHORED `font-lock-keywords' item." | |
2030 | (when (looking-at "[ \t*]*\\(\\sw+\\)[ \t]*\\((\\)?") | |
2e6a15fc SM |
2031 | (save-match-data |
2032 | (condition-case nil | |
2033 | (save-restriction | |
2034 | ;; Restrict to the end of line, currently guaranteed to be LIMIT. | |
2035 | (narrow-to-region (point-min) limit) | |
2036 | (goto-char (match-end 1)) | |
2037 | ;; Move over any item value, etc., to the next item. | |
2038 | (while (not (looking-at "[ \t]*\\(\\(,\\)\\|;\\|$\\)")) | |
2039 | (goto-char (or (scan-sexps (point) 1) (point-max)))) | |
2040 | (goto-char (match-end 2))) | |
2041 | (error t))))) | |
46f26fcf SM |
2042 | \f |
2043 | ;; Lisp. | |
2e6a15fc | 2044 | |
030f4a35 | 2045 | (defconst lisp-font-lock-keywords-1 |
2e6a15fc SM |
2046 | (eval-when-compile |
2047 | (list | |
2d63aa67 | 2048 | ;; |
55015061 SM |
2049 | ;; Definitions. |
2050 | (list (concat "(\\(def\\(" | |
2051 | ;; Function declarations. | |
9c8de95c | 2052 | "\\(advice\\|alias\\|generic\\|macro\\*?\\|method\\|" |
4fffc071 | 2053 | "setf\\|subst\\*?\\|un\\*?\\|" |
1a5c5f2e | 2054 | "ine-\\(condition\\|\\(?:derived\\|minor\\)-mode\\|" |
4fffc071 | 2055 | "method-combination\\|setf-expander\\|skeleton\\|widget\\|" |
1a5c5f2e | 2056 | "function\\|\\(compiler\\|modify\\|symbol\\)-macro\\)\\)\\|" |
2e6a15fc | 2057 | ;; Variable declarations. |
4fffc071 | 2058 | "\\(const\\(ant\\)?\\|custom\\|face\\|parameter\\|var\\)\\|" |
2e6a15fc | 2059 | ;; Structure declarations. |
5bbc1cf7 | 2060 | "\\(class\\|group\\|package\\|struct\\|type\\)" |
2e6a15fc | 2061 | "\\)\\)\\>" |
55015061 | 2062 | ;; Any whitespace and defined object. |
2e6a15fc | 2063 | "[ \t'\(]*" |
11b42ef4 | 2064 | "\\(setf[ \t]+\\sw+)\\|\\sw+\\)?") |
2e6a15fc | 2065 | '(1 font-lock-keyword-face) |
ae659ad5 | 2066 | '(9 (cond ((match-beginning 3) font-lock-function-name-face) |
aaa15488 | 2067 | ((match-beginning 6) font-lock-variable-name-face) |
55015061 | 2068 | (t font-lock-type-face)) |
2e6a15fc | 2069 | nil t)) |
2d63aa67 SM |
2070 | ;; |
2071 | ;; Emacs Lisp autoload cookies. | |
731dd885 | 2072 | '("^;;;###\\(autoload\\)" 1 font-lock-warning-face prepend) |
2e6a15fc | 2073 | )) |
56fcbd7e | 2074 | "Subdued level highlighting for Lisp modes.") |
030f4a35 RS |
2075 | |
2076 | (defconst lisp-font-lock-keywords-2 | |
799761f0 | 2077 | (append lisp-font-lock-keywords-1 |
2e6a15fc SM |
2078 | (eval-when-compile |
2079 | (list | |
2080 | ;; | |
2d63aa67 | 2081 | ;; Control structures. Emacs Lisp forms. |
ac6e572c SM |
2082 | (cons (concat |
2083 | "(" (regexp-opt | |
4fffc071 | 2084 | '("cond" "if" "while" "let" "let*" |
ac6e572c | 2085 | "prog" "progn" "progv" "prog1" "prog2" "prog*" |
4fffc071 | 2086 | "inline" "lambda" "save-restriction" "save-excursion" |
ac6e572c SM |
2087 | "save-window-excursion" "save-selected-window" |
2088 | "save-match-data" "save-current-buffer" "unwind-protect" | |
9c8de95c | 2089 | "condition-case" "track-mouse" |
ac6e572c | 2090 | "eval-after-load" "eval-and-compile" "eval-when-compile" |
4fffc071 | 2091 | "eval-when" |
844a6a46 SM |
2092 | "with-current-buffer" "with-electric-help" |
2093 | "with-output-to-string" "with-output-to-temp-buffer" | |
79f238c9 | 2094 | "with-temp-buffer" "with-temp-file" "with-temp-message" |
844a6a46 | 2095 | "with-timeout") t) |
ac6e572c | 2096 | "\\>") |
2e6a15fc SM |
2097 | 1) |
2098 | ;; | |
2d63aa67 | 2099 | ;; Control structures. Common Lisp forms. |
ac6e572c SM |
2100 | (cons (concat |
2101 | "(" (regexp-opt | |
2102 | '("when" "unless" "case" "ecase" "typecase" "etypecase" | |
aaa15488 | 2103 | "ccase" "ctypecase" "handler-case" "handler-bind" |
ae659ad5 | 2104 | "restart-bind" "restart-case" "in-package" |
4fffc071 | 2105 | "cerror" "break" "ignore-errors" |
ae659ad5 | 2106 | "loop" "do" "do*" "dotimes" "dolist" "the" "locally" |
aaa15488 RS |
2107 | "proclaim" "declaim" "declare" "symbol-macrolet" |
2108 | "lexical-let" "lexical-let*" "flet" "labels" "compiler-let" | |
2109 | "destructuring-bind" "macrolet" "tagbody" "block" | |
ac6e572c SM |
2110 | "return" "return-from") t) |
2111 | "\\>") | |
2d63aa67 SM |
2112 | 1) |
2113 | ;; | |
4fffc071 SM |
2114 | ;; Exit/Feature symbols as constants. |
2115 | (list (concat "(\\(catch\\|throw\\|featurep\\|provide\\|require\\)\\>" | |
2116 | "[ \t']*\\(\\sw+\\)?") | |
2117 | '(1 font-lock-keyword-face) | |
2118 | '(2 font-lock-constant-face nil t)) | |
2119 | ;; | |
2120 | ;; Erroneous structures. | |
2121 | '("(\\(abort\\|assert\\|error\\|signal\\)\\>" 1 font-lock-warning-face) | |
2e6a15fc SM |
2122 | ;; |
2123 | ;; Words inside \\[] tend to be for `substitute-command-keys'. | |
8acf2292 | 2124 | '("\\\\\\\\\\[\\(\\sw+\\)]" 1 font-lock-constant-face prepend) |
2e6a15fc SM |
2125 | ;; |
2126 | ;; Words inside `' tend to be symbol names. | |
8acf2292 | 2127 | '("`\\(\\sw\\sw+\\)'" 1 font-lock-constant-face prepend) |
2e6a15fc | 2128 | ;; |
9c8de95c | 2129 | ;; Constant values. |
c1f2ffc8 | 2130 | '("\\<:\\sw\\sw+\\>" 0 font-lock-builtin-face) |
2e6a15fc SM |
2131 | ;; |
2132 | ;; ELisp and CLisp `&' keywords as types. | |
f56f1421 | 2133 | '("\\&\\sw+\\>" . font-lock-type-face) |
5e9e032a SS |
2134 | ;; |
2135 | ;; CL `with-' and `do-' constructs | |
2136 | '("(\\(\\(do-\\|with-\\)\\(\\s_\\|\\w\\)*\\)" 1 font-lock-keyword-face) | |
2e6a15fc | 2137 | ))) |
fb512de9 | 2138 | "Gaudy level highlighting for Lisp modes.") |
030f4a35 | 2139 | |
fb512de9 SM |
2140 | (defvar lisp-font-lock-keywords lisp-font-lock-keywords-1 |
2141 | "Default expressions to highlight in Lisp modes.") | |
46f26fcf | 2142 | \f |
2e6a15fc | 2143 | ;;; User choices. |
030f4a35 | 2144 | |
c1f2ffc8 SM |
2145 | ;; These provide a means to fontify types not defined by the language. Those |
2146 | ;; types might be the user's own or they might be generally accepted and used. | |
55015061 | 2147 | ;; Generally accepted types are used to provide default variable values. |
c1f2ffc8 | 2148 | |
2273c36b SM |
2149 | (define-widget 'font-lock-extra-types-widget 'radio |
2150 | "Widget `:type' for members of the custom group `font-lock-extra-types'. | |
2151 | Members should `:load' the package `font-lock' to use this widget." | |
2152 | :args '((const :tag "none" nil) | |
46f26fcf | 2153 | (repeat :tag "types" regexp))) |
2273c36b | 2154 | |
31b482ee | 2155 | (defcustom c-font-lock-extra-types '("FILE" "\\sw+_t" "Lisp_Object") |
2e6a15fc | 2156 | "*List of extra types to fontify in C mode. |
55015061 | 2157 | Each list item should be a regexp not containing word-delimiters. |
c1f2ffc8 | 2158 | For example, a value of (\"FILE\" \"\\\\sw+_t\") means the word FILE and words |
55015061 SM |
2159 | ending in _t are treated as type names. |
2160 | ||
2273c36b SM |
2161 | The value of this variable is used when Font Lock mode is turned on." |
2162 | :type 'font-lock-extra-types-widget | |
2163 | :group 'font-lock-extra-types) | |
9bfbb130 | 2164 | |
b9dd672d | 2165 | (defcustom c++-font-lock-extra-types |
4fffc071 SM |
2166 | '("\\sw+_t" |
2167 | "\\([iof]\\|str\\)+stream\\(buf\\)?" "ios" | |
b9dd672d SM |
2168 | "string" "rope" |
2169 | "list" "slist" | |
2170 | "deque" "vector" "bit_vector" | |
2171 | "set" "multiset" | |
2172 | "map" "multimap" | |
2173 | "hash\\(_\\(m\\(ap\\|ulti\\(map\\|set\\)\\)\\|set\\)\\)?" | |
2174 | "stack" "queue" "priority_queue" | |
9dc09247 | 2175 | "type_info" |
4fffc071 SM |
2176 | "iterator" "const_iterator" "reverse_iterator" "const_reverse_iterator" |
2177 | "reference" "const_reference") | |
2e6a15fc | 2178 | "*List of extra types to fontify in C++ mode. |
55015061 | 2179 | Each list item should be a regexp not containing word-delimiters. |
b9dd672d SM |
2180 | For example, a value of (\"string\") means the word string is treated as a type |
2181 | name. | |
55015061 | 2182 | |
2273c36b SM |
2183 | The value of this variable is used when Font Lock mode is turned on." |
2184 | :type 'font-lock-extra-types-widget | |
2185 | :group 'font-lock-extra-types) | |
030f4a35 | 2186 | |
2273c36b | 2187 | (defcustom objc-font-lock-extra-types '("Class" "BOOL" "IMP" "SEL") |
2e6a15fc | 2188 | "*List of extra types to fontify in Objective-C mode. |
55015061 | 2189 | Each list item should be a regexp not containing word-delimiters. |
c1f2ffc8 | 2190 | For example, a value of (\"Class\" \"BOOL\" \"IMP\" \"SEL\") means the words |
55015061 SM |
2191 | Class, BOOL, IMP and SEL are treated as type names. |
2192 | ||
2273c36b SM |
2193 | The value of this variable is used when Font Lock mode is turned on." |
2194 | :type 'font-lock-extra-types-widget | |
2195 | :group 'font-lock-extra-types) | |
1bd50840 | 2196 | |
68c67d1f SM |
2197 | (defcustom java-font-lock-extra-types |
2198 | '("[A-Z\300-\326\330-\337]\\sw*[a-z]\\sw*") | |
2e6a15fc | 2199 | "*List of extra types to fontify in Java mode. |
55015061 | 2200 | Each list item should be a regexp not containing word-delimiters. |
68c67d1f | 2201 | For example, a value of (\"[A-Z\300-\326\330-\337]\\\\sw*[a-z]\\\\sw*\") means capitalised |
55015061 SM |
2202 | words (and words conforming to the Java id spec) are treated as type names. |
2203 | ||
2273c36b SM |
2204 | The value of this variable is used when Font Lock mode is turned on." |
2205 | :type 'font-lock-extra-types-widget | |
2206 | :group 'font-lock-extra-types) | |
2e6a15fc SM |
2207 | \f |
2208 | ;;; C. | |
c1f2ffc8 SM |
2209 | |
2210 | ;; [Murmur murmur murmur] Maestro, drum-roll please... [Murmur murmur murmur.] | |
2211 | ;; Ahem. [Murmur murmur murmur] Lay-dees an Gennel-men. [Murmur murmur shhh!] | |
2212 | ;; I am most proud and humbly honoured today [murmur murmur cough] to present | |
2213 | ;; to you good people, the winner of the Second Millennium Award for The Most | |
2214 | ;; Hairy Language Syntax. [Ahhh!] All rise please. [Shuffle shuffle | |
2215 | ;; shuffle.] And a round of applause please. For... The C Language! [Roar.] | |
2216 | ;; | |
2217 | ;; Thank you... You are too kind... It is with a feeling of great privilege | |
2218 | ;; and indeed emotion [sob] that I accept this award. It has been a long hard | |
2219 | ;; road. But we know our destiny. And our future. For we must not rest. | |
2220 | ;; There are more tokens to overload, more shoehorn, more methodologies. But | |
2221 | ;; more is a plus! [Ha ha ha.] And more means plus! [Ho ho ho.] The future | |
1c626aaf | 2222 | ;; is C++! [Ohhh!] The Third Millennium Award... Will be ours! [Roar.] |
c1f2ffc8 | 2223 | |
2e6a15fc SM |
2224 | (defconst c-font-lock-keywords-1 nil |
2225 | "Subdued level highlighting for C mode.") | |
9bfbb130 | 2226 | |
2e6a15fc SM |
2227 | (defconst c-font-lock-keywords-2 nil |
2228 | "Medium level highlighting for C mode. | |
2229 | See also `c-font-lock-extra-types'.") | |
1bd50840 | 2230 | |
2e6a15fc SM |
2231 | (defconst c-font-lock-keywords-3 nil |
2232 | "Gaudy level highlighting for C mode. | |
2233 | See also `c-font-lock-extra-types'.") | |
9bfbb130 | 2234 | |
2d63aa67 | 2235 | (let* ((c-keywords |
ac6e572c SM |
2236 | (eval-when-compile |
2237 | (regexp-opt '("break" "continue" "do" "else" "for" "if" "return" | |
4fffc071 SM |
2238 | "switch" "while" "sizeof" |
2239 | ;; Type related, but we don't do anything special. | |
2240 | "typedef" "extern" "auto" "register" "static" | |
336911a1 SM |
2241 | "volatile" "const" |
2242 | ;; Dan Nicolaescu <done@gnu.org> says this is new. | |
fd612dd9 | 2243 | "restrict")))) |
4fffc071 SM |
2244 | (c-type-specs |
2245 | (eval-when-compile | |
fd612dd9 | 2246 | (regexp-opt '("enum" "struct" "union")))) |
4fffc071 SM |
2247 | (c-type-specs-depth |
2248 | (regexp-opt-depth c-type-specs)) | |
2249 | (c-type-names | |
2d63aa67 | 2250 | `(mapconcat 'identity |
019f00d8 | 2251 | (cons |
d2251bbf SM |
2252 | ,(eval-when-compile |
2253 | (regexp-opt | |
2254 | '("char" "short" "int" "long" "signed" "unsigned" | |
2255 | "float" "double" "void" "complex"))) | |
2d63aa67 SM |
2256 | c-font-lock-extra-types) |
2257 | "\\|")) | |
4fffc071 | 2258 | (c-type-names-depth |
d2251bbf | 2259 | `(regexp-opt-depth ,c-type-names)) |
76f5e2af GM |
2260 | (c-preprocessor-directives |
2261 | (eval-when-compile | |
2262 | (regexp-opt | |
2263 | '("define" "elif" "else" "endif" "error" "file" "if" "ifdef" | |
2264 | "ifndef" "include" "line" "pragma" "undef")))) | |
2265 | (c-preprocessor-directives-depth | |
d2251bbf | 2266 | (regexp-opt-depth c-preprocessor-directives))) |
f60f18ae KH |
2267 | (setq c-font-lock-keywords-1 |
2268 | (list | |
f60f18ae | 2269 | ;; |
9bfbb130 | 2270 | ;; These are all anchored at the beginning of line for speed. |
2e6a15fc | 2271 | ;; Note that `c++-font-lock-keywords-1' depends on `c-font-lock-keywords-1'. |
9bfbb130 SM |
2272 | ;; |
2273 | ;; Fontify function name definitions (GNU style; without type on line). | |
c1f2ffc8 SM |
2274 | '("^\\(\\sw+\\)[ \t]*(" 1 font-lock-function-name-face) |
2275 | ;; | |
2276 | ;; Fontify error directives. | |
2277 | '("^#[ \t]*error[ \t]+\\(.+\\)" 1 font-lock-warning-face prepend) | |
9bfbb130 SM |
2278 | ;; |
2279 | ;; Fontify filenames in #include <...> preprocessor directives as strings. | |
9c8de95c | 2280 | '("^#[ \t]*\\(import\\|include\\)[ \t]*\\(<[^>\"\n]*>?\\)" |
2e6a15fc | 2281 | 2 font-lock-string-face) |
f60f18ae | 2282 | ;; |
a1eb1cf1 | 2283 | ;; Fontify function macro names. |
7d7d915a | 2284 | '("^#[ \t]*define[ \t]+\\(\\sw+\\)(" 1 font-lock-function-name-face) |
f60f18ae | 2285 | ;; |
5aa29679 RS |
2286 | ;; Fontify symbol names in #elif or #if ... defined preprocessor directives. |
2287 | '("^#[ \t]*\\(elif\\|if\\)\\>" | |
9bfbb130 | 2288 | ("\\<\\(defined\\)\\>[ \t]*(?\\(\\sw+\\)?" nil nil |
b9dd672d | 2289 | (1 font-lock-builtin-face) (2 font-lock-variable-name-face nil t))) |
9bfbb130 | 2290 | ;; |
a1eb1cf1 | 2291 | ;; Fontify otherwise as symbol names, and the preprocessor directive names. |
76f5e2af GM |
2292 | (list |
2293 | (concat "^#[ \t]*\\(" c-preprocessor-directives | |
2294 | "\\)\\>[ \t!]*\\(\\sw+\\)?") | |
2295 | '(1 font-lock-builtin-face) | |
2296 | (list (+ 2 c-preprocessor-directives-depth) | |
d2251bbf | 2297 | 'font-lock-variable-name-face nil t)))) |
f60f18ae KH |
2298 | |
2299 | (setq c-font-lock-keywords-2 | |
2300 | (append c-font-lock-keywords-1 | |
030f4a35 | 2301 | (list |
030f4a35 | 2302 | ;; |
9bfbb130 | 2303 | ;; Simple regexps for speed. |
b89e1134 | 2304 | ;; |
4fffc071 | 2305 | ;; Fontify all type names. |
c1f2ffc8 | 2306 | `(eval . |
d2251bbf | 2307 | (cons (concat "\\<\\(" ,c-type-names "\\)\\>") 'font-lock-type-face)) |
030f4a35 | 2308 | ;; |
b89e1134 | 2309 | ;; Fontify all builtin keywords (except case, default and goto; see below). |
4fffc071 | 2310 | (concat "\\<\\(" c-keywords "\\|" c-type-specs "\\)\\>") |
030f4a35 | 2311 | ;; |
9bfbb130 | 2312 | ;; Fontify case/goto keywords and targets, and case default/goto tags. |
76f5e2af GM |
2313 | '("\\<\\(case\\|goto\\)\\>" |
2314 | (1 font-lock-keyword-face) | |
2315 | ("\\(-[0-9]+\\|\\sw+\\)" | |
2316 | ;; Return limit of search. | |
2317 | (save-excursion (skip-chars-forward "^:\n") (point)) | |
2318 | nil | |
2319 | (1 font-lock-constant-face nil t))) | |
68c67d1f SM |
2320 | ;; Anders Lindgren <andersl@andersl.com> points out that it is quicker to |
2321 | ;; use MATCH-ANCHORED to effectively anchor the regexp on the left. | |
e0e277ff | 2322 | ;; This must come after the one for keywords and targets. |
4d80b2cc | 2323 | '(":" ("^[ \t]*\\(\\sw+\\)[ \t]*:[ \t]*$" |
2e6a15fc | 2324 | (beginning-of-line) (end-of-line) |
8acf2292 | 2325 | (1 font-lock-constant-face))) |
f60f18ae | 2326 | ))) |
1bd50840 | 2327 | |
9bfbb130 SM |
2328 | (setq c-font-lock-keywords-3 |
2329 | (append c-font-lock-keywords-2 | |
2330 | ;; | |
2331 | ;; More complicated regexps for more complete highlighting for types. | |
2332 | ;; We still have to fontify type specifiers individually, as C is so hairy. | |
2333 | (list | |
2334 | ;; | |
4fffc071 | 2335 | ;; Fontify all storage types, plus their items. |
c1f2ffc8 | 2336 | `(eval . |
d2251bbf | 2337 | (list (concat "\\<\\(" ,c-type-names "\\)\\>" |
c1f2ffc8 SM |
2338 | "\\([ \t*&]+\\sw+\\>\\)*") |
2339 | ;; Fontify each declaration item. | |
2d63aa67 SM |
2340 | (list 'font-lock-match-c-style-declaration-item-and-skip-to-next |
2341 | ;; Start with point after all type specifiers. | |
4fffc071 SM |
2342 | (list 'goto-char (list 'or |
2343 | (list 'match-beginning | |
d2251bbf | 2344 | (+ ,c-type-names-depth 2)) |
2d63aa67 SM |
2345 | '(match-end 1))) |
2346 | ;; Finish with point after first type specifier. | |
2347 | '(goto-char (match-end 1)) | |
2348 | ;; Fontify as a variable or function name. | |
2349 | '(1 (if (match-beginning 2) | |
2350 | font-lock-function-name-face | |
2351 | font-lock-variable-name-face))))) | |
9bfbb130 | 2352 | ;; |
4fffc071 SM |
2353 | ;; Fontify all storage specs and types, plus their items. |
2354 | `(eval . | |
d2251bbf | 2355 | (list (concat "\\<\\(" ,c-type-specs "\\)\\>" |
4fffc071 SM |
2356 | "[ \t]*\\(\\sw+\\)?") |
2357 | (list 1 'font-lock-keyword-face) | |
d2251bbf | 2358 | (list ,(+ c-type-specs-depth 2) 'font-lock-type-face nil t) |
4fffc071 SM |
2359 | (list 'font-lock-match-c-style-declaration-item-and-skip-to-next |
2360 | nil nil | |
2361 | ;; Fontify as a variable or function name. | |
2362 | '(1 (if (match-beginning 2) | |
2363 | font-lock-function-name-face | |
2364 | font-lock-variable-name-face) nil t)))) | |
2365 | ;; | |
9bfbb130 SM |
2366 | ;; Fontify structures, or typedef names, plus their items. |
2367 | '("\\(}\\)[ \t*]*\\sw" | |
c1f2ffc8 | 2368 | (font-lock-match-c-style-declaration-item-and-skip-to-next |
9bfbb130 | 2369 | (goto-char (match-end 1)) nil |
4fffc071 | 2370 | (1 font-lock-type-face))) |
9bfbb130 SM |
2371 | ;; |
2372 | ;; Fontify anything at beginning of line as a declaration or definition. | |
2373 | '("^\\(\\sw+\\)\\>\\([ \t*]+\\sw+\\>\\)*" | |
2374 | (1 font-lock-type-face) | |
c1f2ffc8 | 2375 | (font-lock-match-c-style-declaration-item-and-skip-to-next |
9bfbb130 | 2376 | (goto-char (or (match-beginning 2) (match-end 1))) nil |
c1f2ffc8 | 2377 | (1 (if (match-beginning 2) |
9bfbb130 SM |
2378 | font-lock-function-name-face |
2379 | font-lock-variable-name-face)))) | |
2380 | ))) | |
2e6a15fc SM |
2381 | ) |
2382 | ||
2383 | (defvar c-font-lock-keywords c-font-lock-keywords-1 | |
2384 | "Default expressions to highlight in C mode. | |
2385 | See also `c-font-lock-extra-types'.") | |
2386 | \f | |
2387 | ;;; C++. | |
2388 | ||
2389 | (defconst c++-font-lock-keywords-1 nil | |
2390 | "Subdued level highlighting for C++ mode.") | |
2391 | ||
2392 | (defconst c++-font-lock-keywords-2 nil | |
2393 | "Medium level highlighting for C++ mode. | |
2394 | See also `c++-font-lock-extra-types'.") | |
2395 | ||
2396 | (defconst c++-font-lock-keywords-3 nil | |
2397 | "Gaudy level highlighting for C++ mode. | |
2398 | See also `c++-font-lock-extra-types'.") | |
9bfbb130 | 2399 | |
c1f2ffc8 SM |
2400 | (defun font-lock-match-c++-style-declaration-item-and-skip-to-next (limit) |
2401 | ;; Regexp matches after point: word<word>::word ( | |
2402 | ;; ^^^^ ^^^^ ^^^^ ^ | |
2403 | ;; Where the match subexpressions are: 1 3 5 6 | |
2404 | ;; | |
2405 | ;; Item is delimited by (match-beginning 1) and (match-end 1). | |
2406 | ;; If (match-beginning 3) is non-nil, that part of the item incloses a `<>'. | |
2407 | ;; If (match-beginning 5) is non-nil, that part of the item follows a `::'. | |
2408 | ;; If (match-beginning 6) is non-nil, the item is followed by a `('. | |
2409 | (when (looking-at (eval-when-compile | |
55015061 SM |
2410 | (concat |
2411 | ;; Skip any leading whitespace. | |
2412 | "[ \t*&]*" | |
2413 | ;; This is `c++-type-spec' from below. (Hint hint!) | |
2414 | "\\(\\sw+\\)" ; The instance? | |
ac6e572c | 2415 | "\\([ \t]*<\\([^>\n]+\\)[ \t*&]*>\\)?" ; Or template? |
844a6a46 | 2416 | "\\([ \t]*::[ \t*~]*\\(\\sw+\\)\\)*" ; Or member? |
55015061 SM |
2417 | ;; Match any trailing parenthesis. |
2418 | "[ \t]*\\((\\)?"))) | |
c1f2ffc8 SM |
2419 | (save-match-data |
2420 | (condition-case nil | |
2421 | (save-restriction | |
2422 | ;; Restrict to the end of line, currently guaranteed to be LIMIT. | |
2423 | (narrow-to-region (point-min) limit) | |
2424 | (goto-char (match-end 1)) | |
2425 | ;; Move over any item value, etc., to the next item. | |
2426 | (while (not (looking-at "[ \t]*\\(\\(,\\)\\|;\\|$\\)")) | |
2427 | (goto-char (or (scan-sexps (point) 1) (point-max)))) | |
2428 | (goto-char (match-end 2))) | |
2429 | (error t))))) | |
2430 | ||
76f5e2af GM |
2431 | (defun font-lock-match-c++-structor-declaration (limit) |
2432 | ;; Match C++ constructors and destructors inside class declarations. | |
2433 | (let ((res nil) | |
2434 | (regexp (concat "^\\s-+\\(\\(virtual\\|explicit\\)\\s-+\\)*~?\\(\\<" | |
2435 | (mapconcat 'identity | |
2436 | c++-font-lock-extra-types "\\|") | |
2437 | "\\>\\)\\s-*(" | |
2438 | ;; Don't match function pointer declarations, e.g.: | |
2439 | ;; Foo (*fptr)(); | |
2440 | "\\s-*[^*( \t]"))) | |
2441 | (while (progn (setq res (re-search-forward regexp limit t)) | |
2442 | (and res | |
2443 | (save-excursion | |
2444 | (beginning-of-line) | |
2445 | (save-match-data | |
2446 | (not (vectorp (c-at-toplevel-p)))))))) | |
2447 | res)) | |
2448 | ||
c1f2ffc8 | 2449 | (let* ((c++-keywords |
ac6e572c SM |
2450 | (eval-when-compile |
2451 | (regexp-opt | |
2452 | '("break" "continue" "do" "else" "for" "if" "return" "switch" | |
e0e277ff | 2453 | "while" "asm" "catch" "delete" "new" "sizeof" "this" "throw" "try" |
5d8b66eb | 2454 | "typeid" |
4fffc071 SM |
2455 | ;; Branko Cibej <branko.cibej@hermes.si> says this is new. |
2456 | "export" | |
2457 | ;; Mark Mitchell <mmitchell@usa.net> says these are new. | |
2458 | "mutable" "explicit" | |
2459 | ;; Alain Picard <ap@abelard.apana.org.au> suggests treating these | |
2460 | ;; as keywords not types. | |
2461 | "typedef" "template" | |
2462 | "extern" "auto" "register" "const" "volatile" "static" | |
fd612dd9 | 2463 | "inline" "friend" "virtual")))) |
c1f2ffc8 | 2464 | (c++-operators |
23a0e11b SM |
2465 | (eval-when-compile |
2466 | (regexp-opt | |
2467 | ;; Taken from Stroustrup, minus keywords otherwise fontified. | |
2468 | '("+" "-" "*" "/" "%" "^" "&" "|" "~" "!" "=" "<" ">" "+=" "-=" | |
2469 | "*=" "/=" "%=" "^=" "&=" "|=" "<<" ">>" ">>=" "<<=" "==" "!=" | |
2470 | "<=" ">=" "&&" "||" "++" "--" "->*" "," "->" "[]" "()")))) | |
4fffc071 SM |
2471 | (c++-type-specs |
2472 | (eval-when-compile | |
2473 | (regexp-opt | |
2474 | '("class" "public" "private" "protected" "typename" | |
2475 | "struct" "union" "enum" "namespace" "using" | |
2476 | ;; Eric Hopper <hopper@omnifarious.mn.org> says these are new. | |
2477 | "static_cast" "dynamic_cast" "const_cast" "reinterpret_cast") t))) | |
2478 | (c++-type-specs-depth | |
2479 | (regexp-opt-depth c++-type-specs)) | |
2480 | (c++-type-names | |
c1f2ffc8 | 2481 | `(mapconcat 'identity |
019f00d8 | 2482 | (cons |
d2251bbf SM |
2483 | ,(eval-when-compile |
2484 | (regexp-opt | |
2485 | '("signed" "unsigned" "short" "long" | |
2486 | "int" "char" "float" "double" "void" | |
2487 | "bool" "complex"))) | |
c1f2ffc8 SM |
2488 | c++-font-lock-extra-types) |
2489 | "\\|")) | |
d2251bbf | 2490 | (c++-type-names-depth `(regexp-opt-depth ,c++-type-names)) |
55015061 SM |
2491 | ;; |
2492 | ;; A brave attempt to match templates following a type and/or match | |
2493 | ;; class membership. See and sync the above function | |
2494 | ;; `font-lock-match-c++-style-declaration-item-and-skip-to-next'. | |
ac6e572c | 2495 | (c++-type-suffix (concat "\\([ \t]*<\\([^>\n]+\\)[ \t*&]*>\\)?" |
844a6a46 | 2496 | "\\([ \t]*::[ \t*~]*\\(\\sw+\\)\\)*")) |
4fffc071 | 2497 | (c++-type-suffix-depth (regexp-opt-depth c++-type-suffix)) |
55015061 SM |
2498 | ;; If the string is a type, it may be followed by the cruft above. |
2499 | (c++-type-spec (concat "\\(\\sw+\\)\\>" c++-type-suffix)) | |
4fffc071 | 2500 | (c++-type-spec-depth (regexp-opt-depth c++-type-spec)) |
55015061 SM |
2501 | ;; |
2502 | ;; Parenthesis depth of user-defined types not forgetting their cruft. | |
ac6e572c | 2503 | (c++-type-depth `(regexp-opt-depth |
d2251bbf | 2504 | (concat ,c++-type-names ,c++-type-suffix))) |
2d63aa67 | 2505 | ) |
9bfbb130 SM |
2506 | (setq c++-font-lock-keywords-1 |
2507 | (append | |
2508 | ;; | |
2509 | ;; The list `c-font-lock-keywords-1' less that for function names. | |
2510 | (cdr c-font-lock-keywords-1) | |
9bfbb130 | 2511 | (list |
2e6a15fc | 2512 | ;; |
c1f2ffc8 SM |
2513 | ;; Fontify function name definitions, possibly incorporating class names. |
2514 | (list (concat "^" c++-type-spec "[ \t]*(") | |
2515 | '(1 (if (or (match-beginning 2) (match-beginning 4)) | |
2516 | font-lock-type-face | |
2517 | font-lock-function-name-face)) | |
4fffc071 | 2518 | '(3 font-lock-type-face nil t) |
c1f2ffc8 | 2519 | '(5 font-lock-function-name-face nil t)) |
9bfbb130 SM |
2520 | ))) |
2521 | ||
1bd50840 | 2522 | (setq c++-font-lock-keywords-2 |
b89e1134 | 2523 | (append c++-font-lock-keywords-1 |
a1eb1cf1 | 2524 | (list |
9bfbb130 SM |
2525 | ;; |
2526 | ;; The list `c-font-lock-keywords-2' for C++ plus operator overloading. | |
c1f2ffc8 | 2527 | `(eval . |
d2251bbf | 2528 | (cons (concat "\\<\\(" ,c++-type-names "\\)\\>") |
c1f2ffc8 | 2529 | 'font-lock-type-face)) |
9bfbb130 | 2530 | ;; |
c1f2ffc8 SM |
2531 | ;; Fontify operator overloading. |
2532 | (list (concat "\\<\\(operator\\)\\>[ \t]*\\(" c++-operators "\\)?") | |
2533 | '(1 font-lock-keyword-face) | |
2534 | '(2 font-lock-builtin-face nil t)) | |
9bfbb130 SM |
2535 | ;; |
2536 | ;; Fontify case/goto keywords and targets, and case default/goto tags. | |
76f5e2af GM |
2537 | '("\\<\\(case\\|goto\\)\\>" |
2538 | (1 font-lock-keyword-face) | |
2539 | ("\\(-[0-9]+\\|\\sw+\\)[ \t]*\\(::\\)?" | |
2540 | ;; Return limit of search. | |
2541 | (save-excursion | |
2542 | (while (progn | |
2543 | (skip-chars-forward "^:\n") | |
2544 | (looking-at "::")) | |
2545 | (forward-char 2)) | |
2546 | (point)) | |
2547 | nil | |
2548 | (1 (if (match-beginning 2) | |
2549 | font-lock-type-face | |
2550 | font-lock-constant-face) nil t))) | |
e0e277ff | 2551 | ;; This must come after the one for keywords and targets. |
2e6a15fc SM |
2552 | '(":" ("^[ \t]*\\(\\sw+\\)[ \t]*:\\($\\|[^:]\\)" |
2553 | (beginning-of-line) (end-of-line) | |
8acf2292 | 2554 | (1 font-lock-constant-face))) |
9bfbb130 SM |
2555 | ;; |
2556 | ;; Fontify other builtin keywords. | |
4fffc071 | 2557 | (concat "\\<\\(" c++-keywords "\\|" c++-type-specs "\\)\\>") |
2e6a15fc SM |
2558 | ;; |
2559 | ;; Eric Hopper <hopper@omnifarious.mn.org> says `true' and `false' are new. | |
8acf2292 | 2560 | '("\\<\\(false\\|true\\)\\>" . font-lock-constant-face) |
9bfbb130 SM |
2561 | ))) |
2562 | ||
2563 | (setq c++-font-lock-keywords-3 | |
2564 | (append c++-font-lock-keywords-2 | |
2565 | ;; | |
2566 | ;; More complicated regexps for more complete highlighting for types. | |
2567 | (list | |
2568 | ;; | |
2569 | ;; Fontify all storage classes and type specifiers, plus their items. | |
c1f2ffc8 | 2570 | `(eval . |
d2251bbf SM |
2571 | (list (concat "\\<\\(" ,c++-type-names "\\)\\>" ,c++-type-suffix |
2572 | "\\([ \t*&]+" ,c++-type-spec "\\)*") | |
4fffc071 | 2573 | ;; The name of any template type. |
d2251bbf | 2574 | (list (+ ,c++-type-names-depth 3) 'font-lock-type-face nil t) |
c1f2ffc8 | 2575 | ;; Fontify each declaration item. |
2d63aa67 SM |
2576 | (list 'font-lock-match-c++-style-declaration-item-and-skip-to-next |
2577 | ;; Start with point after all type specifiers. | |
2578 | (list 'goto-char (list 'or (list 'match-beginning | |
d2251bbf | 2579 | (+ ,c++-type-depth 2)) |
2d63aa67 SM |
2580 | '(match-end 1))) |
2581 | ;; Finish with point after first type specifier. | |
2582 | '(goto-char (match-end 1)) | |
2583 | ;; Fontify as a variable or function name. | |
2584 | '(1 (cond ((or (match-beginning 2) (match-beginning 4)) | |
2585 | font-lock-type-face) | |
68c67d1f SM |
2586 | ((and (match-beginning 6) (c-at-toplevel-p)) |
2587 | font-lock-function-name-face) | |
2588 | (t | |
2589 | font-lock-variable-name-face))) | |
4fffc071 | 2590 | '(3 font-lock-type-face nil t) |
2d63aa67 SM |
2591 | '(5 (if (match-beginning 6) |
2592 | font-lock-function-name-face | |
2593 | font-lock-variable-name-face) nil t)))) | |
9bfbb130 | 2594 | ;; |
4fffc071 SM |
2595 | ;; Fontify all storage specs and types, plus their items. |
2596 | `(eval . | |
d2251bbf SM |
2597 | (list (concat "\\<" ,c++-type-specs "\\>" ,c++-type-suffix |
2598 | "[ \t]*\\(" ,c++-type-spec "\\)?") | |
4fffc071 | 2599 | ;; The name of any template type. |
d2251bbf | 2600 | (list ,(+ c++-type-specs-depth 2) 'font-lock-type-face nil t) |
4fffc071 | 2601 | ;; The name of any type. |
d2251bbf | 2602 | (list (+ ,c++-type-specs-depth ,c++-type-suffix-depth 2) |
4fffc071 SM |
2603 | 'font-lock-type-face nil t) |
2604 | ;; Fontify each declaration item. | |
2605 | (list 'font-lock-match-c++-style-declaration-item-and-skip-to-next | |
2606 | ;; Start with point after all type specifiers. | |
2607 | nil | |
2608 | ;; Finish with point after first type specifier. | |
2609 | nil | |
2610 | ;; Fontify as a variable or function name. | |
2611 | '(1 (cond ((or (match-beginning 2) (match-beginning 4)) | |
2612 | font-lock-type-face) | |
68c67d1f SM |
2613 | ((and (match-beginning 6) (c-at-toplevel-p)) |
2614 | font-lock-function-name-face) | |
2615 | (t | |
2616 | font-lock-variable-name-face))) | |
4fffc071 SM |
2617 | '(3 font-lock-type-face nil t) |
2618 | '(5 (if (match-beginning 6) | |
2619 | font-lock-function-name-face | |
2620 | font-lock-variable-name-face) nil t)) | |
2621 | )) | |
2622 | ;; | |
9bfbb130 SM |
2623 | ;; Fontify structures, or typedef names, plus their items. |
2624 | '("\\(}\\)[ \t*]*\\sw" | |
2625 | (font-lock-match-c++-style-declaration-item-and-skip-to-next | |
2626 | (goto-char (match-end 1)) nil | |
4fffc071 | 2627 | (1 font-lock-type-face))) |
9bfbb130 SM |
2628 | ;; |
2629 | ;; Fontify anything at beginning of line as a declaration or definition. | |
c1f2ffc8 SM |
2630 | (list (concat "^\\(" c++-type-spec "[ \t*&]*\\)+") |
2631 | '(font-lock-match-c++-style-declaration-item-and-skip-to-next | |
2632 | (goto-char (match-beginning 1)) | |
2633 | (goto-char (match-end 1)) | |
2634 | (1 (cond ((or (match-beginning 2) (match-beginning 4)) | |
2635 | font-lock-type-face) | |
2636 | ((match-beginning 6) font-lock-function-name-face) | |
2637 | (t font-lock-variable-name-face))) | |
4fffc071 | 2638 | (3 font-lock-type-face nil t) |
c1f2ffc8 SM |
2639 | (5 (if (match-beginning 6) |
2640 | font-lock-function-name-face | |
2641 | font-lock-variable-name-face) nil t))) | |
76f5e2af GM |
2642 | ;; |
2643 | ;; Fontify constructors and destructors inside class declarations. | |
2644 | '(font-lock-match-c++-structor-declaration | |
2645 | (3 font-lock-function-name-face t)) | |
9bfbb130 | 2646 | ))) |
f60f18ae | 2647 | ) |
030f4a35 | 2648 | |
fb512de9 | 2649 | (defvar c++-font-lock-keywords c++-font-lock-keywords-1 |
2e6a15fc SM |
2650 | "Default expressions to highlight in C++ mode. |
2651 | See also `c++-font-lock-extra-types'.") | |
2652 | \f | |
2653 | ;;; Objective-C. | |
2654 | ||
2655 | (defconst objc-font-lock-keywords-1 nil | |
2656 | "Subdued level highlighting for Objective-C mode.") | |
2657 | ||
2658 | (defconst objc-font-lock-keywords-2 nil | |
2659 | "Medium level highlighting for Objective-C mode. | |
2660 | See also `objc-font-lock-extra-types'.") | |
2661 | ||
2662 | (defconst objc-font-lock-keywords-3 nil | |
2663 | "Gaudy level highlighting for Objective-C mode. | |
2664 | See also `objc-font-lock-extra-types'.") | |
2665 | ||
2666 | ;; Regexps written with help from Stephen Peters <speters@us.oracle.com> and | |
2667 | ;; Jacques Duthen Prestataire <duthen@cegelec-red.fr>. | |
2d63aa67 | 2668 | (let* ((objc-keywords |
ac6e572c SM |
2669 | (eval-when-compile |
2670 | (regexp-opt '("break" "continue" "do" "else" "for" "if" "return" | |
4fffc071 SM |
2671 | "switch" "while" "sizeof" "self" "super" |
2672 | "typedef" "auto" "extern" "static" | |
fd612dd9 | 2673 | "volatile" "const")))) |
4fffc071 SM |
2674 | (objc-type-specs |
2675 | (eval-when-compile | |
2676 | (regexp-opt | |
2677 | '("register" "struct" "union" "enum" | |
2678 | "oneway" "in" "out" "inout" "bycopy" "byref") t))) | |
2679 | (objc-type-specs-depth | |
2680 | (regexp-opt-depth objc-type-specs)) | |
2681 | (objc-type-names | |
2d63aa67 SM |
2682 | `(mapconcat 'identity |
2683 | (cons | |
d2251bbf SM |
2684 | ,(eval-when-compile |
2685 | (regexp-opt | |
2686 | '("signed" "unsigned" "short" "long" | |
2687 | "int" "char" "float" "double" "void" | |
2688 | "id"))) | |
2d63aa67 SM |
2689 | objc-font-lock-extra-types) |
2690 | "\\|")) | |
4fffc071 | 2691 | (objc-type-names-depth |
d2251bbf | 2692 | `(regexp-opt-depth ,objc-type-names)) |
2d63aa67 | 2693 | ) |
2e6a15fc SM |
2694 | (setq objc-font-lock-keywords-1 |
2695 | (append | |
2696 | ;; | |
2697 | ;; The list `c-font-lock-keywords-1' less that for function names. | |
2698 | (cdr c-font-lock-keywords-1) | |
2699 | (list | |
2700 | ;; | |
2701 | ;; Fontify compiler directives. | |
c1f2ffc8 SM |
2702 | '("@\\(\\sw+\\)\\>" |
2703 | (1 font-lock-keyword-face) | |
4fffc071 SM |
2704 | ("\\=[ \t:<,]*\\(\\sw+\\)" nil nil |
2705 | (1 font-lock-type-face))) | |
2e6a15fc SM |
2706 | ;; |
2707 | ;; Fontify method names and arguments. Oh Lordy! | |
2708 | ;; First, on the same line as the function declaration. | |
4fffc071 SM |
2709 | '("^[+-][ \t]*\\(PRIVATE\\>\\)?[ \t]*\\(([^)\n]+)\\)?[ \t]*\\(\\sw+\\)" |
2710 | (1 font-lock-keyword-face nil t) | |
2711 | (3 font-lock-function-name-face) | |
2712 | ("\\=[ \t]*\\(\\sw+\\)?:[ \t]*\\(([^)\n]+)\\)?[ \t]*\\(\\sw+\\)" | |
2e6a15fc SM |
2713 | nil nil |
2714 | (1 font-lock-function-name-face nil t) | |
4fffc071 | 2715 | (3 font-lock-variable-name-face))) |
2e6a15fc | 2716 | ;; Second, on lines following the function declaration. |
4fffc071 | 2717 | '(":" ("^[ \t]*\\(\\sw+\\)?:[ \t]*\\(([^)\n]+)\\)?[ \t]*\\(\\sw+\\)" |
2e6a15fc SM |
2718 | (beginning-of-line) (end-of-line) |
2719 | (1 font-lock-function-name-face nil t) | |
4fffc071 | 2720 | (3 font-lock-variable-name-face))) |
2e6a15fc | 2721 | ))) |
030f4a35 | 2722 | |
2e6a15fc SM |
2723 | (setq objc-font-lock-keywords-2 |
2724 | (append objc-font-lock-keywords-1 | |
2725 | (list | |
2726 | ;; | |
2727 | ;; Simple regexps for speed. | |
2728 | ;; | |
2729 | ;; Fontify all type specifiers. | |
c1f2ffc8 | 2730 | `(eval . |
d2251bbf | 2731 | (cons (concat "\\<\\(" ,objc-type-names "\\)\\>") |
c1f2ffc8 | 2732 | 'font-lock-type-face)) |
2e6a15fc SM |
2733 | ;; |
2734 | ;; Fontify all builtin keywords (except case, default and goto; see below). | |
4fffc071 | 2735 | (concat "\\<\\(" objc-keywords "\\|" objc-type-specs "\\)\\>") |
2e6a15fc SM |
2736 | ;; |
2737 | ;; Fontify case/goto keywords and targets, and case default/goto tags. | |
56fcbd7e | 2738 | '("\\<\\(case\\|goto\\)\\>[ \t]*\\(-?\\sw+\\)?" |
8acf2292 | 2739 | (1 font-lock-keyword-face) (2 font-lock-constant-face nil t)) |
2e6a15fc | 2740 | ;; Fontify tags iff sole statement on line, otherwise we detect selectors. |
e0e277ff | 2741 | ;; This must come after the one for keywords and targets. |
2e6a15fc SM |
2742 | '(":" ("^[ \t]*\\(\\sw+\\)[ \t]*:[ \t]*$" |
2743 | (beginning-of-line) (end-of-line) | |
8acf2292 | 2744 | (1 font-lock-constant-face))) |
2e6a15fc SM |
2745 | ;; |
2746 | ;; Fontify null object pointers. | |
8acf2292 | 2747 | '("\\<[Nn]il\\>" . font-lock-constant-face) |
2e6a15fc | 2748 | ))) |
d46c21ec | 2749 | |
2e6a15fc SM |
2750 | (setq objc-font-lock-keywords-3 |
2751 | (append objc-font-lock-keywords-2 | |
2752 | ;; | |
2753 | ;; More complicated regexps for more complete highlighting for types. | |
2754 | ;; We still have to fontify type specifiers individually, as C is so hairy. | |
2755 | (list | |
2756 | ;; | |
2757 | ;; Fontify all storage classes and type specifiers, plus their items. | |
c1f2ffc8 | 2758 | `(eval . |
d2251bbf | 2759 | (list (concat "\\<\\(" ,objc-type-names "\\)\\>" |
c1f2ffc8 SM |
2760 | "\\([ \t*&]+\\sw+\\>\\)*") |
2761 | ;; Fontify each declaration item. | |
2d63aa67 SM |
2762 | (list 'font-lock-match-c-style-declaration-item-and-skip-to-next |
2763 | ;; Start with point after all type specifiers. | |
4fffc071 SM |
2764 | (list 'goto-char |
2765 | (list 'or (list 'match-beginning | |
d2251bbf | 2766 | (+ ,objc-type-names-depth 2)) |
4fffc071 | 2767 | '(match-end 1))) |
2d63aa67 SM |
2768 | ;; Finish with point after first type specifier. |
2769 | '(goto-char (match-end 1)) | |
2770 | ;; Fontify as a variable or function name. | |
2771 | '(1 (if (match-beginning 2) | |
2772 | font-lock-function-name-face | |
2773 | font-lock-variable-name-face))))) | |
2e6a15fc | 2774 | ;; |
4fffc071 SM |
2775 | ;; Fontify all storage specs and types, plus their items. |
2776 | `(eval . | |
d2251bbf | 2777 | (list (concat "\\<\\(" ,objc-type-specs "[ \t]*\\)+\\>" |
4fffc071 SM |
2778 | "[ \t]*\\(\\sw+\\)?") |
2779 | ;; The name of any type. | |
d2251bbf | 2780 | (list ,(+ objc-type-specs-depth 2) 'font-lock-type-face nil t) |
4fffc071 SM |
2781 | ;; Fontify each declaration item. |
2782 | (list 'font-lock-match-c++-style-declaration-item-and-skip-to-next | |
2783 | nil nil | |
2784 | ;; Fontify as a variable or function name. | |
2785 | '(1 (if (match-beginning 2) | |
2786 | font-lock-function-name-face | |
2787 | font-lock-variable-name-face))) | |
2788 | )) | |
2789 | ;; | |
2e6a15fc SM |
2790 | ;; Fontify structures, or typedef names, plus their items. |
2791 | '("\\(}\\)[ \t*]*\\sw" | |
c1f2ffc8 | 2792 | (font-lock-match-c-style-declaration-item-and-skip-to-next |
2e6a15fc | 2793 | (goto-char (match-end 1)) nil |
4fffc071 | 2794 | (1 font-lock-type-face))) |
2e6a15fc SM |
2795 | ;; |
2796 | ;; Fontify anything at beginning of line as a declaration or definition. | |
2797 | '("^\\(\\sw+\\)\\>\\([ \t*]+\\sw+\\>\\)*" | |
2798 | (1 font-lock-type-face) | |
c1f2ffc8 | 2799 | (font-lock-match-c-style-declaration-item-and-skip-to-next |
2e6a15fc | 2800 | (goto-char (or (match-beginning 2) (match-end 1))) nil |
c1f2ffc8 | 2801 | (1 (if (match-beginning 2) |
2e6a15fc SM |
2802 | font-lock-function-name-face |
2803 | font-lock-variable-name-face)))) | |
2804 | ))) | |
2805 | ) | |
2806 | ||
2807 | (defvar objc-font-lock-keywords objc-font-lock-keywords-1 | |
2808 | "Default expressions to highlight in Objective-C mode. | |
2809 | See also `objc-font-lock-extra-types'.") | |
2810 | \f | |
2811 | ;;; Java. | |
2812 | ||
2813 | (defconst java-font-lock-keywords-1 nil | |
2814 | "Subdued level highlighting for Java mode.") | |
2815 | ||
2816 | (defconst java-font-lock-keywords-2 nil | |
2817 | "Medium level highlighting for Java mode. | |
2818 | See also `java-font-lock-extra-types'.") | |
2819 | ||
2820 | (defconst java-font-lock-keywords-3 nil | |
2821 | "Gaudy level highlighting for Java mode. | |
2822 | See also `java-font-lock-extra-types'.") | |
2823 | ||
4d80b2cc SM |
2824 | ;; Regexps written with help from Fred White <fwhite@bbn.com>, |
2825 | ;; Anders Lindgren <andersl@andersl.com> and Carl Manning <caroma@ai.mit.edu>. | |
2d63aa67 | 2826 | (let* ((java-keywords |
ac6e572c SM |
2827 | (eval-when-compile |
2828 | (regexp-opt | |
2829 | '("catch" "do" "else" "super" "this" "finally" "for" "if" | |
68c67d1f | 2830 | ;; Anders Lindgren <andersl@andersl.com> says these have gone. |
ac6e572c SM |
2831 | ;; "cast" "byvalue" "future" "generic" "operator" "var" |
2832 | ;; "inner" "outer" "rest" | |
68c67d1f | 2833 | "implements" "extends" "throws" "instanceof" "new" |
fd612dd9 | 2834 | "interface" "return" "switch" "throw" "try" "while")))) |
2d63aa67 | 2835 | ;; |
68c67d1f SM |
2836 | ;; Classes immediately followed by an object name. |
2837 | (java-type-names | |
2838 | `(mapconcat 'identity | |
019f00d8 | 2839 | (cons |
d2251bbf SM |
2840 | ,(eval-when-compile |
2841 | (regexp-opt '("boolean" "char" "byte" "short" "int" "long" | |
2842 | "float" "double" "void"))) | |
68c67d1f SM |
2843 | java-font-lock-extra-types) |
2844 | "\\|")) | |
d2251bbf | 2845 | (java-type-names-depth `(regexp-opt-depth ,java-type-names)) |
2d63aa67 SM |
2846 | ;; |
2847 | ;; These are eventually followed by an object name. | |
68c67d1f | 2848 | (java-type-specs |
ac6e572c SM |
2849 | (eval-when-compile |
2850 | (regexp-opt | |
2851 | '("abstract" "const" "final" "synchronized" "transient" "static" | |
68c67d1f | 2852 | ;; Anders Lindgren <andersl@andersl.com> says this has gone. |
ac6e572c | 2853 | ;; "threadsafe" |
b09f207a SM |
2854 | "volatile" "public" "private" "protected" "native" |
2855 | ;; Carl Manning <caroma@ai.mit.edu> says this is new. | |
2856 | "strictfp")))) | |
ac6e572c | 2857 | ) |
2e6a15fc SM |
2858 | (setq java-font-lock-keywords-1 |
2859 | (list | |
2860 | ;; | |
2861 | ;; Fontify class names. | |
2862 | '("\\<\\(class\\)\\>[ \t]*\\(\\sw+\\)?" | |
4d80b2cc | 2863 | (1 font-lock-keyword-face) (2 font-lock-type-face nil t)) |
2e6a15fc SM |
2864 | ;; |
2865 | ;; Fontify package names in import directives. | |
2866 | '("\\<\\(import\\|package\\)\\>[ \t]*\\(\\sw+\\)?" | |
68c67d1f SM |
2867 | (1 font-lock-keyword-face) |
2868 | (2 font-lock-constant-face nil t) | |
2869 | ("\\=\\.\\(\\*\\|\\sw+\\)" nil nil | |
2870 | (1 font-lock-constant-face nil t))) | |
2e6a15fc SM |
2871 | )) |
2872 | ||
2873 | (setq java-font-lock-keywords-2 | |
2874 | (append java-font-lock-keywords-1 | |
2875 | (list | |
2876 | ;; | |
68c67d1f SM |
2877 | ;; Fontify class names. |
2878 | `(eval . | |
d2251bbf | 2879 | (cons (concat "\\<\\(" ,java-type-names "\\)\\>[^.]") |
4d80b2cc | 2880 | '(1 font-lock-type-face))) |
2e6a15fc SM |
2881 | ;; |
2882 | ;; Fontify all builtin keywords (except below). | |
68c67d1f | 2883 | (concat "\\<\\(" java-keywords "\\|" java-type-specs "\\)\\>") |
2e6a15fc SM |
2884 | ;; |
2885 | ;; Fontify keywords and targets, and case default/goto tags. | |
56fcbd7e | 2886 | (list "\\<\\(break\\|case\\|continue\\|goto\\)\\>[ \t]*\\(-?\\sw+\\)?" |
8acf2292 | 2887 | '(1 font-lock-keyword-face) '(2 font-lock-constant-face nil t)) |
e0e277ff | 2888 | ;; This must come after the one for keywords and targets. |
4d80b2cc | 2889 | '(":" ("^[ \t]*\\(\\sw+\\)[ \t]*:[ \t]*$" |
2e6a15fc | 2890 | (beginning-of-line) (end-of-line) |
8acf2292 | 2891 | (1 font-lock-constant-face))) |
2e6a15fc | 2892 | ;; |
2e6a15fc | 2893 | ;; Fontify all constants. |
8acf2292 | 2894 | '("\\<\\(false\\|null\\|true\\)\\>" . font-lock-constant-face) |
2e6a15fc SM |
2895 | ;; |
2896 | ;; Javadoc tags within comments. | |
32038c7a GM |
2897 | (list |
2898 | (concat "@\\(" | |
2899 | "author\\|deprecated\\|exception" | |
2900 | "\\|link\\|return\\|see\\|serial\\|serialData\\|serialField" | |
2901 | "\\|since\\|throws" | |
2902 | "\\|version" | |
1bc7654a GM |
2903 | "\\)\\>") |
2904 | '(1 font-lock-constant-face prepend)) | |
2e6a15fc | 2905 | '("@\\(param\\)\\>[ \t]*\\(\\sw+\\)?" |
8acf2292 | 2906 | (1 font-lock-constant-face prepend) |
2e6a15fc | 2907 | (2 font-lock-variable-name-face prepend t)) |
340fe50f GM |
2908 | '("@\\(exception\\|throws\\)\\>[ \t]*\\(\\S-+\\)?" |
2909 | (1 font-lock-constant-face prepend) | |
2910 | (2 font-lock-type-face prepend t)) | |
2e6a15fc SM |
2911 | ))) |
2912 | ||
2913 | (setq java-font-lock-keywords-3 | |
2914 | (append java-font-lock-keywords-2 | |
2915 | ;; | |
2916 | ;; More complicated regexps for more complete highlighting for types. | |
2917 | ;; We still have to fontify type specifiers individually, as Java is hairy. | |
2918 | (list | |
2919 | ;; | |
2e6a15fc | 2920 | ;; Fontify random types immediately followed by an item or items. |
c1f2ffc8 | 2921 | `(eval . |
d2251bbf | 2922 | (list (concat "\\<\\(" ,java-type-names "\\)\\>" |
c1f2ffc8 SM |
2923 | "\\([ \t]*\\[[ \t]*\\]\\)*" |
2924 | "\\([ \t]*\\sw\\)") | |
2925 | ;; Fontify each declaration item. | |
2d63aa67 SM |
2926 | (list 'font-lock-match-c-style-declaration-item-and-skip-to-next |
2927 | ;; Start and finish with point after the type specifier. | |
2928 | (list 'goto-char (list 'match-beginning | |
d2251bbf | 2929 | (+ ,java-type-names-depth 3))) |
2d63aa67 | 2930 | (list 'goto-char (list 'match-beginning |
d2251bbf | 2931 | (+ ,java-type-names-depth 3))) |
2d63aa67 SM |
2932 | ;; Fontify as a variable or function name. |
2933 | '(1 (if (match-beginning 2) | |
2934 | font-lock-function-name-face | |
2935 | font-lock-variable-name-face))))) | |
2e6a15fc | 2936 | ;; |
2e6a15fc | 2937 | ;; Fontify those that are eventually followed by an item or items. |
68c67d1f | 2938 | (list (concat "\\<\\(" java-type-specs "\\)\\>" |
2e6a15fc SM |
2939 | "\\([ \t]+\\sw+\\>" |
2940 | "\\([ \t]*\\[[ \t]*\\]\\)*" | |
2941 | "\\)*") | |
2942 | ;; Fontify each declaration item. | |
c1f2ffc8 | 2943 | '(font-lock-match-c-style-declaration-item-and-skip-to-next |
2e6a15fc | 2944 | ;; Start with point after all type specifiers. |
2d63aa67 | 2945 | (goto-char (or (match-beginning 5) (match-end 1))) |
2e6a15fc SM |
2946 | ;; Finish with point after first type specifier. |
2947 | (goto-char (match-end 1)) | |
2948 | ;; Fontify as a variable or function name. | |
c1f2ffc8 | 2949 | (1 (if (match-beginning 2) |
2e6a15fc SM |
2950 | font-lock-function-name-face |
2951 | font-lock-variable-name-face)))) | |
2952 | ))) | |
2953 | ) | |
2954 | ||
2955 | (defvar java-font-lock-keywords java-font-lock-keywords-1 | |
2956 | "Default expressions to highlight in Java mode. | |
2957 | See also `java-font-lock-extra-types'.") | |
d46c21ec | 2958 | \f |
a1eb1cf1 | 2959 | ;; Provide ourselves: |
8f261d40 | 2960 | |
030f4a35 | 2961 | (provide 'font-lock) |
8e5b2bfe | 2962 | (require 'jit-lock) |
030f4a35 RS |
2963 | |
2964 | ;;; font-lock.el ends here |