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030f4a35 RS |
1 | ;; Electric Font Lock Mode |
2 | ;; Copyright (C) 1992, 1993 Free Software Foundation, Inc. | |
3 | ||
4 | ;; Author: jwz, then rms | |
5 | ;; Maintainer: FSF | |
6 | ;; Keywords: languages, faces | |
7 | ||
8 | ;; This file is part of GNU Emacs. | |
9 | ||
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
11 | ;; it under the terms of the GNU General Public License as published by | |
12 | ;; the Free Software Foundation; either version 2, or (at your option) | |
13 | ;; any later version. | |
14 | ||
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
22 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
23 | ||
24 | ||
25 | ;;; Commentary: | |
26 | ||
27 | ;; Font-lock-mode is a minor mode that causes your comments to be | |
28 | ;; displayed in one face, strings in another, reserved words in another, | |
29 | ;; documentation strings in another, and so on. | |
30 | ;; | |
31 | ;; Comments will be displayed in `font-lock-comment-face'. | |
32 | ;; Strings will be displayed in `font-lock-string-face'. | |
33 | ;; Doc strings will be displayed in `font-lock-doc-string-face'. | |
34 | ;; Function and variable names (in their defining forms) will be | |
35 | ;; displayed in `font-lock-function-name-face'. | |
36 | ;; Reserved words will be displayed in `font-lock-keyword-face'. | |
37 | ;; | |
38 | ;; To make the text you type be fontified, use M-x font-lock-mode. | |
39 | ;; When this minor mode is on, the fonts of the current line are | |
40 | ;; updated with every insertion or deletion. | |
41 | ;; | |
42 | ;; To define new reserved words or other patterns to highlight, use | |
43 | ;; the `font-lock-keywords' variable. This should be mode-local. | |
44 | ;; | |
45 | ;; To turn this on automatically, add this to your .emacs file: | |
46 | ;; | |
47 | ;; (setq emacs-lisp-mode-hook '(lambda () (font-lock-mode 1))) | |
48 | ;; | |
49 | ;; On a Sparc2, the initial fontification takes about 12 seconds for a 120k | |
50 | ;; file of C code, using the default configuration. You can speed this up | |
51 | ;; substantially by removing some of the patterns that are highlighted by | |
52 | ;; default. Fontifying Lisp code is significantly faster, because Lisp has a | |
53 | ;; more regular syntax than C, so the expressions don't have to be as hairy. | |
54 | ||
55 | ;;; Code: | |
56 | ||
57 | (or (internal-find-face 'underline) | |
58 | (copy-face 'default 'underline)) | |
59 | (set-face-underline-p 'underline t) | |
60 | ||
61 | (defvar font-lock-comment-face | |
62 | 'italic | |
63 | "Face to use for comments.") | |
64 | ||
65 | (defvar font-lock-doc-string-face | |
66 | 'italic | |
67 | "Face to use for documentation strings.") | |
68 | ||
69 | (defvar font-lock-string-face | |
70 | 'underline | |
71 | "Face to use for string constants.") | |
72 | ||
313d590c | 73 | (defvar font-lock-function-name-face |
030f4a35 RS |
74 | 'bold-italic |
75 | "Face to use for function names.") | |
76 | ||
77 | (defvar font-lock-keyword-face | |
78 | 'bold | |
79 | "Face to use for keywords.") | |
80 | ||
81 | (defvar font-lock-type-face | |
82 | 'italic | |
83 | "Face to use for data types.") | |
84 | ||
85 | (make-variable-buffer-local 'font-lock-keywords) | |
86 | (defvar font-lock-keywords nil | |
87 | "*The keywords to highlight. | |
88 | If this is a list, then elements may be of the forms: | |
89 | ||
214507c7 | 90 | \"string\" ; A regexp to highlight in the |
030f4a35 | 91 | ; `font-lock-keyword-face'. |
214507c7 RS |
92 | (\"string\" . N) ; Highlight subexpression N of the regexp. |
93 | (\"string\" . face-name) ; Use the named face | |
94 | (\"string\" N face-name) ; Both of the above | |
95 | (\"string\" N face-name t) ; This allows highlighting to override | |
96 | ; already-highlighted regions. | |
97 | (\"string\" N face-name keep) ; This allows highlighting to occur | |
98 | ; even if some parts of what STRING matches | |
99 | ; are already highlighted--but does not alter | |
100 | ; the existing highlighting of those parts. | |
030f4a35 RS |
101 | |
102 | These regular expressions should not match text which spans lines. | |
103 | While \\[font-lock-fontify-buffer] handles multi-line patterns correctly, | |
104 | updating when you edit the buffer does not, | |
105 | since it considers text one line at a time. | |
106 | ||
107 | Be careful composing regexps for this list; the wrong pattern can dramatically | |
108 | slow things down!") | |
109 | ||
110 | (defvar font-lock-keywords-case-fold-search nil | |
111 | "*Non-nil means the patterns in `font-lock-keywords' are case-insensitive.") | |
112 | ||
113 | (defvar font-lock-verbose t | |
114 | "*Non-nil means `font-lock-fontify-buffer' should print status messages.") | |
115 | ||
60b691e2 | 116 | ;;;###autoload |
030f4a35 RS |
117 | (defvar font-lock-mode-hook nil |
118 | "Function or functions to run on entry to Font Lock mode.") | |
119 | ||
120 | ;;; These variables record, for each buffer, | |
121 | ;;; the parse state at a particular position, always the start of a line. | |
122 | ;;; This is used to make font-lock-fontify-region faster. | |
123 | (defvar font-lock-cache-position nil) | |
124 | (defvar font-lock-cache-state nil) | |
125 | (make-variable-buffer-local 'font-lock-cache-position) | |
126 | (make-variable-buffer-local 'font-lock-cache-state) | |
127 | ||
128 | (defun font-lock-fontify-region (start end) | |
129 | "Put proper face on each string and comment between START and END." | |
130 | (save-excursion | |
131 | (goto-char start) | |
132 | (beginning-of-line) | |
133 | (setq end (min end (point-max))) | |
313d590c RS |
134 | (let ((buffer-read-only nil) |
135 | state startline prev prevstate | |
136 | (modified (buffer-modified-p))) | |
030f4a35 RS |
137 | ;; Find the state at the line-beginning before START. |
138 | (setq startline (point)) | |
139 | (if (eq (point) font-lock-cache-position) | |
140 | (setq state font-lock-cache-state) | |
141 | ;; Find outermost containing sexp. | |
142 | (beginning-of-defun) | |
143 | ;; Find the state at STARTLINE. | |
144 | (while (< (point) startline) | |
145 | (setq state (parse-partial-sexp (point) startline 0))) | |
146 | (setq font-lock-cache-state state | |
147 | font-lock-cache-position (point))) | |
148 | ;; Now find the state precisely at START. | |
149 | (setq state (parse-partial-sexp (point) start nil nil state)) | |
150 | ;; If the region starts inside a string, show the extent of it. | |
151 | (if (nth 3 state) | |
152 | (let ((beg (point))) | |
153 | (while (and (re-search-forward "\\s\"" end 'move) | |
154 | (nth 3 (parse-partial-sexp beg (point) | |
155 | nil nil state)))) | |
156 | (put-text-property beg (point) 'face font-lock-string-face) | |
157 | (setq state (parse-partial-sexp beg (point) nil nil state)))) | |
158 | ;; Likewise for a comment. | |
159 | (if (or (nth 4 state) (nth 7 state)) | |
160 | (let ((beg (point))) | |
161 | (while (and (re-search-forward (if comment-end | |
162 | (concat "\\s>\\|" | |
163 | (regexp-quote comment-end)) | |
164 | "\\s>") | |
165 | end 'move) | |
166 | (nth 3 (parse-partial-sexp beg (point) | |
167 | nil nil state)))) | |
168 | (put-text-property beg (point) 'face font-lock-comment-face) | |
169 | (setq state (parse-partial-sexp beg (point) nil nil state)))) | |
170 | ;; Find each interesting place between here and END. | |
171 | (while (and (< (point) end) | |
172 | (setq prev (point) prevstate state) | |
d5d9ce91 RS |
173 | (re-search-forward (if comment-start-skip |
174 | (concat "\\s\"\\|" comment-start-skip) | |
175 | "\\s\"") | |
176 | end t) | |
030f4a35 RS |
177 | ;; Clear out the fonts of what we skip over. |
178 | (progn (remove-text-properties prev (point) '(face nil)) t) | |
179 | ;; Verify the state at that place | |
180 | ;; so we don't get fooled by \" or \;. | |
181 | (setq state (parse-partial-sexp prev (point) | |
182 | nil nil state))) | |
183 | (let ((here (point))) | |
184 | (if (or (nth 4 state) (nth 7 state)) | |
185 | ;; We found a real comment start. | |
186 | (let ((beg (match-beginning 0))) | |
187 | (goto-char beg) | |
188 | (save-restriction | |
189 | (narrow-to-region (point-min) end) | |
190 | (condition-case nil | |
191 | (progn | |
192 | (forward-comment 1) | |
193 | ;; forward-comment skips all whitespace, | |
194 | ;; so go back to the real end of the comment. | |
195 | (skip-chars-backward " \t")) | |
196 | (error (goto-char end)))) | |
197 | (put-text-property beg (point) 'face font-lock-comment-face) | |
198 | (setq state (parse-partial-sexp here (point) nil nil state))) | |
199 | (if (nth 3 state) | |
200 | (let ((beg (match-beginning 0))) | |
201 | (while (and (re-search-forward "\\s\"" end 'move) | |
202 | (nth 3 (parse-partial-sexp here (point) | |
203 | nil nil state)))) | |
204 | (put-text-property beg (point) 'face font-lock-string-face) | |
205 | (setq state (parse-partial-sexp here (point) nil nil state)))) | |
206 | )) | |
207 | ;; Make sure PREV is non-nil after the loop | |
208 | ;; only if it was set on the very last iteration. | |
209 | (setq prev nil)) | |
210 | (and prev | |
313d590c RS |
211 | (remove-text-properties prev end '(face nil))) |
212 | (set-buffer-modified-p modified)))) | |
030f4a35 RS |
213 | |
214 | ;; This code used to be used to show a string on reaching the end of it. | |
215 | ;; It is probably not needed due to later changes to handle strings | |
216 | ;; starting before the region in question. | |
217 | ;; (if (and (null (nth 3 state)) | |
218 | ;; (eq (char-syntax (preceding-char)) ?\") | |
219 | ;; (save-excursion | |
220 | ;; (nth 3 (parse-partial-sexp prev (1- (point)) | |
221 | ;; nil nil prevstate)))) | |
222 | ;; ;; We found the end of a string. | |
223 | ;; (save-excursion | |
224 | ;; (setq foo2 (point)) | |
225 | ;; (let ((ept (point))) | |
226 | ;; (forward-sexp -1) | |
227 | ;; ;; Highlight the string when we see the end. | |
228 | ;; ;; Doing it at the start leads to trouble: | |
229 | ;; ;; either it fails to handle multiline strings | |
230 | ;; ;; or it can run away when an unmatched " is inserted. | |
231 | ;; (put-text-property (point) ept 'face | |
232 | ;; (if (= (car state) 1) | |
233 | ;; font-lock-doc-string-face | |
234 | ;; font-lock-string-face))))) | |
235 | ||
236 | (defun font-lock-unfontify-region (beg end) | |
313d590c RS |
237 | (let ((modified (buffer-modified-p)) |
238 | (buffer-read-only nil)) | |
239 | (remove-text-properties beg end '(face nil)) | |
240 | (set-buffer-modified-p modified))) | |
030f4a35 RS |
241 | |
242 | ;; Called when any modification is made to buffer text. | |
243 | (defun font-lock-after-change-function (beg end old-len) | |
244 | (save-excursion | |
245 | (save-match-data | |
246 | (goto-char beg) | |
247 | ;; Discard the cache info if text before it has changed. | |
248 | (and font-lock-cache-position | |
249 | (> font-lock-cache-position beg) | |
250 | (setq font-lock-cache-position nil)) | |
251 | ;; Rescan till end of line. yes! | |
252 | (goto-char end) | |
253 | (end-of-line) | |
254 | (setq end (point)) | |
030f4a35 RS |
255 | (goto-char beg) |
256 | (beginning-of-line) | |
257 | (setq beg (point)) | |
1ec9e15b RS |
258 | ;; First scan for strings and comments. |
259 | ;; Must scan from line start in case of | |
260 | ;; inserting space into `intfoo () {}'. | |
261 | (font-lock-fontify-region beg (1+ end)) | |
030f4a35 RS |
262 | ;; Now scan for keywords. |
263 | (font-lock-hack-keywords beg end)))) | |
264 | \f | |
265 | ;;; Fontifying arbitrary patterns | |
266 | ||
267 | (defsubst font-lock-any-properties-p (start end) | |
214507c7 RS |
268 | (or (get-text-property start 'face) |
269 | (let ((next (next-single-property-change start 'face))) | |
030f4a35 RS |
270 | (and next (< next end))))) |
271 | ||
272 | (defun font-lock-hack-keywords (start end &optional loudly) | |
273 | (goto-char start) | |
274 | (let ((case-fold-search font-lock-keywords-case-fold-search) | |
275 | (rest font-lock-keywords) | |
276 | (count 0) | |
313d590c RS |
277 | (buffer-read-only nil) |
278 | (modified (buffer-modified-p)) | |
030f4a35 RS |
279 | first str match face s e allow-overlap-p) |
280 | (while rest | |
281 | (setq first (car rest) rest (cdr rest)) | |
282 | (goto-char start) | |
283 | (cond ((consp first) | |
284 | (setq str (car first)) | |
285 | (cond ((consp (cdr first)) | |
286 | (setq match (nth 1 first) | |
313d590c | 287 | face (eval (nth 2 first)) |
030f4a35 RS |
288 | allow-overlap-p (nth 3 first))) |
289 | ((symbolp (cdr first)) | |
290 | (setq match 0 allow-overlap-p nil | |
313d590c | 291 | face (eval (cdr first)))) |
030f4a35 RS |
292 | (t |
293 | (setq match (cdr first) | |
294 | allow-overlap-p nil | |
295 | face font-lock-keyword-face)))) | |
296 | (t | |
297 | (setq str first match 0 allow-overlap-p nil | |
298 | face font-lock-keyword-face))) | |
299 | ;(message "regexp: %s" str) | |
300 | (while (re-search-forward str end t) | |
301 | (setq s (match-beginning match) | |
302 | e (match-end match)) | |
303 | (or s (error "expression did not match subexpression %d" match)) | |
304 | ;; don't fontify this keyword if we're already in some other context. | |
305 | (or (if allow-overlap-p nil (font-lock-any-properties-p s e)) | |
214507c7 RS |
306 | (if (not (memq allow-overlap-p '(t nil))) |
307 | (save-excursion | |
308 | (goto-char s) | |
309 | (save-restriction | |
310 | (narrow-to-region s e) | |
311 | (while (not (eobp)) | |
312 | (let ((next (next-single-property-change (point) 'face))) | |
2555cdec | 313 | (if (or (null next) (> next (point-max))) |
214507c7 RS |
314 | (setq next (point-max))) |
315 | (if (not (get-text-property (point) 'face)) | |
316 | (put-text-property (point) next 'face face)) | |
317 | (goto-char next))))) | |
318 | (put-text-property s e 'face face)))) | |
030f4a35 RS |
319 | (if loudly (message "Fontifying %s... (regexps...%s)" |
320 | (buffer-name) | |
313d590c RS |
321 | (make-string (setq count (1+ count)) ?.)))) |
322 | (set-buffer-modified-p modified))) | |
030f4a35 RS |
323 | \f |
324 | ;; The user level functions | |
325 | ||
326 | (defvar font-lock-mode nil) ; for modeline | |
327 | (or (assq 'font-lock-mode minor-mode-alist) | |
328 | (setq minor-mode-alist | |
329 | (append minor-mode-alist | |
330 | '((font-lock-mode " Font"))))) | |
331 | ||
332 | (defvar font-lock-fontified nil) ; whether we have hacked this buffer | |
333 | (put 'font-lock-fontified 'permanent-local t) | |
334 | ||
335 | ;;;###autoload | |
336 | (defun font-lock-mode (&optional arg) | |
337 | "Toggle Font Lock mode. | |
338 | With arg, turn Font Lock mode on if and only if arg is positive. | |
339 | ||
340 | When Font Lock mode is enabled, text is fontified as you type it: | |
341 | ||
342 | - comments are displayed in `font-lock-comment-face'; | |
343 | (That is a variable whose value should be a face name.) | |
344 | - strings are displayed in `font-lock-string-face'; | |
345 | - documentation strings are displayed in `font-lock-doc-string-face'; | |
346 | - function and variable names in their defining forms are displayed | |
347 | in `font-lock-function-name-face'; | |
348 | - and certain other expressions are displayed in other faces | |
349 | according to the value of the variable `font-lock-keywords'. | |
350 | ||
351 | When you turn Font Lock mode on/off, the buffer is fontified/defontified. | |
352 | To fontify a buffer without having newly typed text become fontified, you | |
353 | can use \\[font-lock-fontify-buffer]." | |
354 | (interactive "P") | |
355 | (let ((on-p (if (null arg) | |
356 | (not font-lock-mode) | |
357 | (> (prefix-numeric-value arg) 0)))) | |
358 | (if (equal (buffer-name) " *Compiler Input*") ; hack for bytecomp... | |
359 | (setq on-p nil)) | |
360 | (or (memq after-change-function | |
361 | '(nil font-lock-after-change-function)) | |
362 | (error "after-change-function is %s" after-change-function)) | |
363 | (set (make-local-variable 'after-change-function) | |
364 | (if on-p 'font-lock-after-change-function nil)) | |
365 | (set (make-local-variable 'font-lock-mode) on-p) | |
366 | (cond (on-p | |
367 | (font-lock-set-defaults) | |
368 | (run-hooks 'font-lock-mode-hook) | |
369 | (or font-lock-fontified (font-lock-fontify-buffer))) | |
370 | (font-lock-fontified | |
371 | (setq font-lock-fontified nil) | |
372 | (font-lock-unfontify-region (point-min) (point-max)))) | |
373 | (force-mode-line-update))) | |
374 | ||
375 | ||
376 | (defun font-lock-fontify-buffer () | |
377 | "Fontify the current buffer the way `font-lock-mode' would: | |
378 | ||
379 | - comments are displayed in `font-lock-comment-face'; | |
380 | - strings are displayed in `font-lock-string-face'; | |
381 | - documentation strings are displayed in `font-lock-doc-string-face'; | |
382 | - function and variable names in their defining forms are displayed | |
383 | in `font-lock-function-name-face'; | |
384 | - and certain other expressions are displayed in other faces | |
385 | according to the value of the variable `font-lock-keywords'. | |
386 | ||
387 | This can take a while for large buffers." | |
388 | (interactive) | |
389 | (let ((was-on font-lock-mode) | |
390 | (font-lock-verbose (or font-lock-verbose (interactive-p)))) | |
391 | (if font-lock-verbose (message "Fontifying %s..." (buffer-name))) | |
392 | ;; Turn it on to run hooks and get the right font-lock-keywords. | |
366b3ecc | 393 | (or was-on (font-lock-set-defaults)) |
030f4a35 RS |
394 | (font-lock-unfontify-region (point-min) (point-max)) |
395 | (if font-lock-verbose (message "Fontifying %s... (syntactically...)" | |
396 | (buffer-name))) | |
397 | ;; (buffer-syntactic-context-flush-cache) | |
398 | (save-excursion | |
399 | (font-lock-fontify-region (point-min) (point-max)) | |
400 | (if font-lock-verbose (message "Fontifying %s... (regexps...)" | |
401 | (buffer-name))) | |
402 | (font-lock-hack-keywords (point-min) (point-max) font-lock-verbose)) | |
030f4a35 RS |
403 | (set (make-local-variable 'font-lock-fontified) t) |
404 | (if font-lock-verbose (message "Fontifying %s... done." (buffer-name))) | |
405 | )) | |
406 | ||
407 | \f | |
408 | ;;; Various mode-specific information. | |
409 | ||
410 | (defun font-lock-set-defaults () | |
214507c7 | 411 | "Set `font-lock-keywords' to something appropriate for this mode." |
030f4a35 RS |
412 | (setq font-lock-keywords |
413 | (cond ((eq major-mode 'lisp-mode) lisp-font-lock-keywords) | |
414 | ((eq major-mode 'emacs-lisp-mode) lisp-font-lock-keywords) | |
415 | ((eq major-mode 'c-mode) c-font-lock-keywords) | |
416 | ((eq major-mode 'c++-c-mode) c-font-lock-keywords) | |
417 | ((eq major-mode 'c++-mode) c++-font-lock-keywords) | |
418 | ((eq major-mode 'perl-mode) perl-font-lock-keywords) | |
419 | ((eq major-mode 'tex-mode) tex-font-lock-keywords) | |
420 | ((eq major-mode 'texinfo-mode) texi-font-lock-keywords) | |
421 | (t nil)))) | |
422 | ||
423 | (defconst lisp-font-lock-keywords-1 | |
424 | '(;; | |
425 | ;; highlight defining forms. This doesn't work too nicely for | |
426 | ;; (defun (setf foo) ...) but it does work for (defvar foo) which | |
427 | ;; is more important. | |
428 | ("^(def[-a-z]+\\s +\\([^ \t\n\)]+\\)" 1 font-lock-function-name-face) | |
429 | ;; | |
430 | ;; highlight CL keywords | |
431 | ("\\s :\\(\\(\\sw\\|\\s_\\)+\\)\\>" . 1) | |
432 | ;; | |
433 | ;; this is highlights things like (def* (setf foo) (bar baz)), but may | |
434 | ;; be slower (I haven't really thought about it) | |
435 | ; ("^(def[-a-z]+\\s +\\(\\s(\\S)*\\s)\\|\\S(\\S *\\)" | |
436 | ; 1 font-lock-function-name-face) | |
437 | ) | |
438 | "For consideration as a value of `lisp-font-lock-keywords'. | |
439 | This does fairly subdued highlighting.") | |
440 | ||
441 | (defconst lisp-font-lock-keywords-2 | |
442 | (append | |
443 | lisp-font-lock-keywords-1 | |
444 | '(;; | |
445 | ;; Highlight control structures | |
446 | ("(\\(cond\\|if\\|when\\|unless\\|[ec]?\\(type\\)?case\\)[ \t\n]" . 1) | |
447 | ("(\\(while\\|do\\|let*?\\|flet\\|labels\\|prog[nv12*]?\\)[ \t\n]" . 1) | |
448 | ("(\\(catch\\|\\throw\\|block\\|return\\|return-from\\)[ \t\n]" . 1) | |
449 | ("(\\(save-restriction\\|save-window-restriction\\)[ \t\n]" . 1) | |
450 | ("(\\(save-excursion\\|unwind-protect\\|condition-case\\)[ \t\n]" . 1) | |
451 | ;; | |
452 | ;; highlight function names in emacs-lisp docstrings (in the syntax | |
453 | ;; that substitute-command-keys understands.) | |
454 | ("\\\\\\\\\\[\\([^]\\\n]+\\)]" 1 font-lock-keyword-face t) | |
455 | ;; | |
456 | ;; highlight words inside `' which tend to be function names | |
457 | ("`\\([-a-zA-Z0-9_][-a-zA-Z0-9_][-a-zA-Z0-9_.]+\\)'" | |
458 | 1 font-lock-keyword-face t) | |
459 | )) | |
460 | "For consideration as a value of `lisp-font-lock-keywords'. | |
461 | This does a lot more highlighting.") | |
462 | ||
463 | ;; default to the gaudier variety? | |
464 | ;(defvar lisp-font-lock-keywords lisp-font-lock-keywords-2 | |
465 | ; "Additional expressions to highlight in Lisp modes.") | |
466 | (defvar lisp-font-lock-keywords lisp-font-lock-keywords-1 | |
467 | "Additional expressions to highlight in Lisp modes.") | |
468 | ||
469 | ||
470 | (defconst c-font-lock-keywords-1 nil | |
471 | "For consideration as a value of `c-font-lock-keywords'. | |
472 | This does fairly subdued highlighting.") | |
473 | ||
474 | (defconst c-font-lock-keywords-2 nil | |
475 | "For consideration as a value of `c-font-lock-keywords'. | |
476 | This does a lot more highlighting.") | |
477 | ||
478 | (let ((storage "auto\\|extern\\|register\\|static\\|volatile") | |
479 | (prefixes "unsigned\\|short\\|long") | |
480 | (types (concat "int\\|char\\|float\\|double\\|void\\|struct\\|" | |
481 | "union\\|enum\\|typedef")) | |
482 | (ctoken "[a-zA-Z0-9_:~*]+") | |
483 | ) | |
484 | (setq c-font-lock-keywords-1 | |
485 | (list | |
486 | ;; fontify preprocessor directives as comments. | |
487 | '("^#[ \t]*[a-z]+" . font-lock-comment-face) | |
488 | ;; | |
489 | ;; fontify names being defined. | |
490 | '("^#[ \t]*\\(define\\|undef\\)[ \t]+\\(\\(\\sw\\|\\s_\\)+\\)" 2 | |
491 | font-lock-function-name-face) | |
492 | ;; | |
493 | ;; fontify other preprocessor lines. | |
214507c7 RS |
494 | '("^#[ \t]*\\(if\\)[ \t]+\\([^\n]+\\)" |
495 | 2 font-lock-function-name-face keep) | |
496 | '("^#[ \t]*\\(endif\\|else\\)[ \t]+\\([^\n]+\\)" | |
497 | 2 font-lock-function-name-face keep) | |
498 | '("^#[ \t]*\\(ifn?def\\)[ \t]+\\([^ \t\n]+\\)" | |
030f4a35 RS |
499 | 2 font-lock-function-name-face t) |
500 | ;; | |
501 | ;; fontify the filename in #include <...> | |
502 | ;; don't need to do this for #include "..." because those were | |
503 | ;; already fontified as strings by the syntactic pass. | |
504 | '("^#[ \t]*include[ \t]+\\(<[^>\"\n]+>\\)" 1 font-lock-string-face) | |
505 | ;; | |
506 | ;; fontify the names of functions being defined. | |
507 | (list (concat | |
508 | "^\\(" ctoken "[ \t]+\\)?" ; type specs; there can be no | |
509 | "\\(" ctoken "[ \t]+\\)?" ; more than 3 tokens, right? | |
510 | "\\(" ctoken "[ \t]+\\)?" | |
1ec9e15b | 511 | "\\([*&]+[ \t]*\\)?" ; pointer |
030f4a35 RS |
512 | "\\(" ctoken "\\)[ \t]*(") ; name |
513 | 5 'font-lock-function-name-face) | |
514 | ;; | |
515 | ;; | |
516 | ;; Fontify structure names (in structure definition form). | |
517 | (list (concat "^\\(typedef[ \t]+struct\\|struct\\|static[ \t]+struct\\)" | |
518 | "[ \t]+\\(" ctoken "\\)[ \t]*\\(\{\\|$\\)") | |
519 | 2 'font-lock-function-name-face) | |
520 | ;; | |
521 | ;; Fontify case clauses. This is fast because its anchored on the left. | |
522 | '("case[ \t]+\\(\\(\\sw\\|\\s_\\)+\\):". 1) | |
523 | '("\\<\\(default\\):". 1) | |
524 | )) | |
525 | ||
526 | (setq c-font-lock-keywords-2 | |
527 | (append c-font-lock-keywords-1 | |
528 | (list | |
529 | ;; | |
530 | ;; fontify all storage classes and type specifiers | |
531 | (cons (concat "\\<\\(" storage "\\)\\>") 'font-lock-type-face) | |
532 | (cons (concat "\\<\\(" types "\\)\\>") 'font-lock-type-face) | |
533 | (cons (concat "\\<\\(" prefixes "[ \t]+" types "\\)\\>") | |
534 | 'font-lock-type-face) | |
535 | ;; | |
536 | ;; fontify all builtin tokens | |
537 | (cons (concat | |
538 | "[ \t]\\(" | |
539 | (mapconcat 'identity | |
540 | '("for" "while" "do" "return" "goto" "case" "break" "switch" | |
541 | "if" "then" "else if" "else" "return" "default" "continue" | |
542 | "default" | |
543 | ) | |
544 | "\\|") | |
545 | "\\)[ \t\n(){};,]") | |
546 | 1) | |
547 | ;; | |
548 | ;; fontify case targets and goto-tags. This is slow because the | |
549 | ;; expression is anchored on the right. | |
550 | "\\(\\(\\sw\\|\\s_\\)+\\):" | |
551 | ;; | |
552 | ;; Fontify variables declared with structures, or typedef names. | |
553 | '("}[ \t*]*\\(\\(\\sw\\|\\s_\\)+\\)[ \t]*[,;]" | |
554 | 1 font-lock-function-name-face) | |
555 | ;; | |
556 | ;; Fontify global variables without a type. | |
557 | ; '("^\\([_a-zA-Z0-9:~*]+\\)[ \t]*[[;={]" 1 font-lock-function-name-face) | |
558 | ||
559 | ))) | |
560 | ) | |
561 | ||
562 | ; default to the gaudier variety? | |
563 | ;(defvar c-font-lock-keywords c-font-lock-keywords-2 | |
564 | ; "Additional expressions to highlight in C mode.") | |
565 | (defvar c-font-lock-keywords c-font-lock-keywords-1 | |
566 | "Additional expressions to highlight in C mode.") | |
567 | ||
568 | (defvar c++-font-lock-keywords c-font-lock-keywords | |
569 | "Additional expressions to highlight in C++ mode.") | |
570 | ||
571 | ||
572 | (defvar perl-font-lock-keywords | |
573 | (list | |
313d590c RS |
574 | (cons (concat "[ \n\t{]*\\(" |
575 | (mapconcat 'identity | |
576 | '("if" "until" "while" "elsif" "else" "unless" "for" | |
577 | "foreach" "continue" "exit" "die" "last" "goto" "next" | |
578 | "redo" "return" "local" "exec") | |
579 | "\\|") | |
580 | "\\)[ \n\t;(]") 1) | |
030f4a35 RS |
581 | (mapconcat 'identity |
582 | '("#endif" "#else" "#ifdef" "#ifndef" "#if" "#include" | |
583 | "#define" "#undef") | |
584 | "\\|") | |
1ec9e15b RS |
585 | '("^[ \n\t]*sub[ \t]+\\([^ \t{]+\\)[ \t]*[{]" 1 font-lock-function-name-face) |
586 | '("[ \n\t{]*\\(eval\\)[ \n\t(;]" 1 font-lock-function-name-face) | |
030f4a35 RS |
587 | '("\\(--- .* ---\\|=== .* ===\\)" . font-lock-doc-string-face) |
588 | ) | |
589 | "Additional expressions to highlight in Perl mode.") | |
590 | ||
591 | (defvar tex-font-lock-keywords | |
592 | (list | |
593 | '("\\(\\\\\\w+\\)" 1 font-lock-keyword-face t) | |
594 | '("{\\\\em\\([^}]+\\)}" 1 font-lock-comment-face t) | |
595 | '("{\\\\bf\\([^}]+\\)}" 1 font-lock-keyword-face t) | |
596 | '("^[ \t\n]*\\\\def[\\\\@]\\(\\w+\\)" 1 font-lock-function-name-face t) | |
597 | '("\\\\\\(begin\\|end\\){\\([a-zA-Z0-9\\*]+\\)}" | |
598 | 2 font-lock-function-name-face t) | |
599 | '("[^\\\\]\\$\\([^$]*\\)\\$" 1 font-lock-string-face t) | |
600 | ; '("\\$\\([^$]*\\)\\$" 1 font-lock-string-face t) | |
601 | ) | |
602 | "Additional expressions to highlight in TeX mode.") | |
603 | ||
604 | (defvar texi-font-lock-keywords | |
605 | (list | |
606 | "@\\(@\\|[^}\t \n{]+\\)" ;commands | |
607 | '("^\\(@c\\|@comment\\)[ \t].*$" . font-lock-comment-face) ;comments | |
608 | '("^\\(*.*\\)[\t ]*$" 1 font-lock-function-name-face t) ;menu items | |
609 | '("@\\(emph\\|strong\\|b\\|i\\){\\([^}]+\\)" 2 font-lock-comment-face t) | |
610 | '("@\\(file\\|kbd\\|key\\){\\([^}]+\\)" 2 font-lock-string-face t) | |
611 | '("@\\(samp\\|code\\|var\\){\\([^}]+\\)" 2 font-lock-function-name-face t) | |
612 | '("@\\(xref\\|pxref\\){\\([^}]+\\)" 2 font-lock-keyword-face t) | |
613 | '("@end *\\([a-zA-Z0-9]+\\)[ \t]*$" 1 font-lock-function-name-face t) | |
614 | '("@item \\(.*\\)$" 1 font-lock-function-name-face t) | |
615 | '("\\$\\([^$]*\\)\\$" 1 font-lock-string-face t) | |
616 | ) | |
617 | "Additional expressions to highlight in TeXinfo mode.") | |
618 | ||
619 | (provide 'font-lock) | |
620 | ||
621 | ;;; font-lock.el ends here |