1 ;;; cc-fonts.el --- font lock support for CC Mode
3 ;; Copyright (C) 2002-2017 Free Software Foundation, Inc.
5 ;; Authors: 2003- Alan Mackenzie
6 ;; 2002- Martin Stjernholm
7 ;; Maintainer: bug-cc-mode@gnu.org
8 ;; Created: 07-Jan-2002
9 ;; Keywords: c languages
12 ;; This file is part of GNU Emacs.
14 ;; GNU Emacs is free software: you can redistribute it and/or modify
15 ;; it under the terms of the GNU General Public License as published by
16 ;; the Free Software Foundation, either version 3 of the License, or
17 ;; (at your option) any later version.
19 ;; GNU Emacs is distributed in the hope that it will be useful,
20 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 ;; GNU General Public License for more details.
24 ;; You should have received a copy of the GNU General Public License
25 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
29 ;; Some comments on the use of faces:
31 ;; o `c-label-face-name' is either `font-lock-constant-face' (in
32 ;; Emacs), or `font-lock-reference-face'.
34 ;; o `c-constant-face-name', `c-reference-face-name' and
35 ;; `c-doc-markup-face-name' are essentially set up like
36 ;; `c-label-face-name'.
38 ;; o `c-preprocessor-face-name' is `font-lock-preprocessor-face' in
39 ;; XEmacs and - in lack of a closer equivalent -
40 ;; `font-lock-builtin-face' or `font-lock-reference-face' in Emacs.
42 ;; o `c-doc-face-name' is `font-lock-doc-string-face' in XEmacs,
43 ;; `font-lock-doc-face' in Emacs 21 and later, or
44 ;; `font-lock-comment-face' in older Emacs (that since source
45 ;; documentation are actually comments in these languages, as opposed
48 ;; TBD: We should probably provide real faces for the above uses and
49 ;; instead initialize them from the standard faces.
53 ;; The faces that already have been put onto the text is tested in
54 ;; various places to direct further fontifications. For this to work,
55 ;; the following assumptions regarding the faces must hold (apart from
56 ;; the dependencies on the font locking order):
58 ;; o `font-lock-comment-face' and the face in `c-doc-face-name' is
59 ;; not used in anything but comments.
60 ;; o If any face (e.g. `c-doc-markup-face-name') but those above is
61 ;; used in comments, it doesn't replace them.
62 ;; o `font-lock-string-face' is not used in anything but string
63 ;; literals (single or double quoted).
64 ;; o `font-lock-keyword-face' and the face in `c-label-face-name' are
65 ;; never overlaid with other faces.
69 (if (and (boundp 'byte-compile-dest-file
)
70 (stringp byte-compile-dest-file
))
71 (cons (file-name-directory byte-compile-dest-file
) load-path
)
73 (load "cc-bytecomp" nil t
)))
76 (cc-require-when-compile 'cc-langs
)
78 (cc-require 'cc-engine
)
79 (cc-require-when-compile 'cc-awk
) ; Change from cc-require, 2003/6/18 to
80 ;; prevent cc-awk being loaded when it's not needed. There is now a (require
81 ;; 'cc-awk) in (defun awk-mode ..).
83 ;; Avoid repeated loading through the eval-after-load directive in
87 (cc-external-require 'font-lock
)
89 (cc-bytecomp-defvar parse-sexp-lookup-properties
) ; Emacs only.
91 ;; Need to declare these local symbols during compilation since
92 ;; they're referenced from lambdas in `byte-compile' calls that are
93 ;; executed at compile time. They don't need to have the proper
94 ;; definitions, though, since the generated functions aren't called
95 ;; during compilation.
96 (cc-bytecomp-defvar c-preprocessor-face-name
)
97 (cc-bytecomp-defvar c-reference-face-name
)
98 (cc-bytecomp-defun c-fontify-recorded-types-and-refs)
99 (cc-bytecomp-defun c-font-lock-declarators)
100 (cc-bytecomp-defun c-font-lock-objc-method)
101 (cc-bytecomp-defun c-font-lock-invalid-string)
104 ;; Note that font-lock in XEmacs doesn't expand face names as
105 ;; variables, so we have to use the (eval . FORM) in the font lock
106 ;; matchers wherever we use these alias variables.
108 (defconst c-preprocessor-face-name
109 (cond ((c-face-name-p 'font-lock-preprocessor-face
)
110 ;; XEmacs has a font-lock-preprocessor-face.
111 'font-lock-preprocessor-face
)
112 ((c-face-name-p 'font-lock-builtin-face
)
113 ;; In Emacs font-lock-builtin-face has traditionally been
114 ;; used for preprocessor directives.
115 'font-lock-builtin-face
)
117 'font-lock-reference-face
)))
119 (cc-bytecomp-defvar font-lock-constant-face
)
121 (defconst c-label-face-name
122 (cond ((c-face-name-p 'font-lock-label-face
)
123 ;; If it happens to occur in the future. (Well, the more
124 ;; pragmatic reason is to get unique faces for the test
126 'font-lock-label-face
)
127 ((and (c-face-name-p 'font-lock-constant-face
)
128 (eq font-lock-constant-face
'font-lock-constant-face
))
129 ;; Test both if font-lock-constant-face exists and that it's
130 ;; not an alias for something else. This is important since
131 ;; we compare already set faces in various places.
132 'font-lock-constant-face
)
134 'font-lock-reference-face
)))
136 (defconst c-constant-face-name
137 (if (and (c-face-name-p 'font-lock-constant-face
)
138 (eq font-lock-constant-face
'font-lock-constant-face
))
139 ;; This doesn't exist in some earlier versions of XEmacs 21.
140 'font-lock-constant-face
143 (defconst c-reference-face-name
145 (if (and (c-face-name-p 'font-lock-reference-face
)
146 (eq font-lock-reference-face
'font-lock-reference-face
))
147 ;; This is considered obsolete in Emacs, but it still maps well
148 ;; to this use. (Another reason to do this is to get unique
149 ;; faces for the test suite.)
150 'font-lock-reference-face
153 ;; This should not mapped to a face that also is used to fontify things
154 ;; that aren't comments or string literals.
155 (defconst c-doc-face-name
156 (cond ((c-face-name-p 'font-lock-doc-string-face
)
158 'font-lock-doc-string-face
)
159 ((c-face-name-p 'font-lock-doc-face
)
160 ;; Emacs 21 and later.
163 'font-lock-comment-face
)))
165 (defconst c-doc-markup-face-name
166 (if (c-face-name-p 'font-lock-doc-markup-face
)
167 ;; If it happens to occur in the future. (Well, the more
168 ;; pragmatic reason is to get unique faces for the test
170 'font-lock-doc-markup-face
173 (defconst c-negation-char-face-name
174 (if (c-face-name-p 'font-lock-negation-char-face
)
175 ;; Emacs 22 has a special face for negation chars.
176 'font-lock-negation-char-face
))
178 (cc-bytecomp-defun face-inverse-video-p) ; Only in Emacs.
180 (defun c-make-inverse-face (oldface newface
)
181 ;; Emacs and XEmacs have completely different face manipulation
183 (copy-face oldface newface
)
184 (cond ((fboundp 'face-inverse-video-p
)
185 ;; Emacs. This only looks at the inverse flag in the current
186 ;; frame. Other display configurations might be different,
187 ;; but it can only show if the same Emacs has frames on
188 ;; e.g. a color and a monochrome display simultaneously.
189 (unless (face-inverse-video-p oldface
)
190 (invert-face newface
)))
191 ((fboundp 'face-property-instance
)
192 ;; XEmacs. Same pitfall here.
193 (unless (face-property-instance oldface
'reverse
)
194 (invert-face newface
)))))
196 (defvar c-annotation-face
'c-annotation-face
)
198 (defface c-annotation-face
199 '((default :inherit font-lock-constant-face
))
200 "Face for highlighting annotations in Java mode and similar modes."
205 ;; We need the following definitions during compilation since they're
206 ;; used when the `c-lang-defconst' initializers are evaluated. Define
207 ;; them at runtime too for the sake of derived modes.
209 ;; This indicates the "font locking context", and is set just before
210 ;; fontification is done. If non-nil, it says, e.g., point starts
211 ;; from within a #if preprocessor construct.
212 (defvar c-font-lock-context nil
)
213 (make-variable-buffer-local 'c-font-lock-context
)
215 (defmacro c-put-font-lock-face
(from to face
)
216 ;; Put a face on a region (overriding any existing face) in the way
217 ;; font-lock would do it. In XEmacs that means putting an
218 ;; additional font-lock property, or else the font-lock package
219 ;; won't recognize it as fontified and might override it
222 ;; This function does a hidden buffer change.
223 (if (fboundp 'font-lock-set-face
)
224 ;; Note: This function has no docstring in XEmacs so it might be
225 ;; considered internal.
226 `(font-lock-set-face ,from
,to
,face
)
227 `(put-text-property ,from
,to
'face
,face
)))
229 (defmacro c-remove-font-lock-face
(from to
)
230 ;; This is the inverse of `c-put-font-lock-face'.
232 ;; This function does a hidden buffer change.
233 (if (fboundp 'font-lock-remove-face
)
234 `(font-lock-remove-face ,from
,to
)
235 `(remove-text-properties ,from
,to
'(face nil
))))
237 (defmacro c-put-font-lock-string-face
(from to
)
238 ;; Put `font-lock-string-face' on a string. The surrounding
239 ;; quotes are included in Emacs but not in XEmacs. The passed
240 ;; region should include them.
242 ;; This function does a hidden buffer change.
243 (if (featurep 'xemacs
)
244 `(c-put-font-lock-face (1+ ,from
) (1- ,to
) 'font-lock-string-face
)
245 `(c-put-font-lock-face ,from
,to
'font-lock-string-face
)))
247 (defmacro c-fontify-types-and-refs
(varlist &rest body
)
248 ;; Like `let', but additionally activates `c-record-type-identifiers'
249 ;; and `c-record-ref-identifiers', and fontifies the recorded ranges
250 ;; accordingly on exit.
252 ;; This function does hidden buffer changes.
253 `(let ((c-record-type-identifiers t
)
254 c-record-ref-identifiers
256 (prog1 (progn ,@body
)
257 (c-fontify-recorded-types-and-refs))))
258 (put 'c-fontify-types-and-refs
'lisp-indent-function
1)
260 (defun c-skip-comments-and-strings (limit)
261 ;; If the point is within a region fontified as a comment or
262 ;; string literal skip to the end of it or to LIMIT, whichever
263 ;; comes first, and return t. Otherwise return nil. The match
264 ;; data is not clobbered.
266 ;; This function might do hidden buffer changes.
267 (when (c-got-face-at (point) c-literal-faces
)
269 (goto-char (c-next-single-property-change
270 (point) 'face nil limit
))
271 (and (< (point) limit
)
272 (c-got-face-at (point) c-literal-faces
))))
275 (defun c-make-syntactic-matcher (regexp)
276 ;; Returns a byte compiled function suitable for use in place of a
277 ;; regexp string in a `font-lock-keywords' matcher, except that
278 ;; only matches outside comments and string literals count.
280 ;; This function does not do any hidden buffer changes, but the
281 ;; generated functions will. (They are however used in places
282 ;; covered by the font-lock context.)
286 (while (and (setq res
(re-search-forward ,regexp limit t
))
288 (goto-char (match-beginning 0))
289 (or (c-skip-comments-and-strings limit
)
291 (goto-char (match-end 0))
295 (defun c-make-font-lock-search-form (regexp highlights
)
296 ;; Return a lisp form which will fontify every occurrence of REGEXP
297 ;; (a regular expression, NOT a function) between POINT and `limit'
298 ;; with HIGHLIGHTS, a list of highlighters as specified on page
299 ;; "Search-based Fontification" in the elisp manual.
300 `(while (re-search-forward ,regexp limit t
)
302 (goto-char (match-beginning 0))
303 (c-skip-comments-and-strings limit
))
304 (goto-char (match-end 0))
307 (if (integerp (car highlight
))
308 ;; e.g. highlight is (1 font-lock-type-face t)
310 (unless (eq (nth 2 highlight
) t
)
312 "The override flag must currently be t in %s"
314 (when (nth 3 highlight
)
316 "The laxmatch flag may currently not be set in %s"
319 (c-put-font-lock-face
320 (match-beginning ,(car highlight
))
321 (match-end ,(car highlight
))
322 ,(elt highlight
1))))
323 ;; highlight is an "ANCHORED HIGHLIGHTER" of the form
324 ;; (ANCHORED-MATCHER PRE-FORM POST-FORM SUBEXP-HIGHLIGHTERS...)
325 (when (nth 3 highlight
)
326 (error "Match highlights currently not supported in %s"
330 (save-match-data ,(car highlight
))
331 ,(nth 2 highlight
))))
334 (defun c-make-font-lock-search-function (regexp &rest highlights
)
335 ;; This function makes a byte compiled function that works much like
336 ;; a matcher element in `font-lock-keywords'. It cuts out a little
337 ;; bit of the overhead compared to a real matcher. The main reason
338 ;; is however to pass the real search limit to the anchored
339 ;; matcher(s), since most (if not all) font-lock implementations
340 ;; arbitrarily limit anchored matchers to the same line, and also
341 ;; to insulate against various other irritating differences between
342 ;; the different (X)Emacs font-lock packages.
344 ;; REGEXP is the matcher, which must be a regexp. Only matches
345 ;; where the beginning is outside any comment or string literal are
348 ;; HIGHLIGHTS is a list of highlight specs, just like in
349 ;; `font-lock-keywords', with these limitations: The face is always
350 ;; overridden (no big disadvantage, since hits in comments etc are
351 ;; filtered anyway), there is no "laxmatch", and an anchored matcher
352 ;; is always a form which must do all the fontification directly.
353 ;; `limit' is a variable bound to the real limit in the context of
354 ;; the anchored matcher forms.
356 ;; This function does not do any hidden buffer changes, but the
357 ;; generated functions will. (They are however used in places
358 ;; covered by the font-lock context.)
360 ;; Note: Replace `byte-compile' with `eval' to debug the generated
361 ;; lambda more easily.
364 (let ( ;; The font-lock package in Emacs is known to clobber
365 ;; `parse-sexp-lookup-properties' (when it exists).
366 (parse-sexp-lookup-properties
367 (cc-eval-when-compile
368 (boundp 'parse-sexp-lookup-properties
))))
369 ,(c-make-font-lock-search-form regexp highlights
))
372 (defun c-make-font-lock-BO-decl-search-function (regexp &rest highlights
)
373 ;; This function makes a byte compiled function that first moves back
374 ;; to the beginning of the current declaration (if any), then searches
375 ;; forward for matcher elements (as in `font-lock-keywords') and
378 ;; The motivation for moving back to the declaration start is to
379 ;; establish a context for the current text when, e.g., a character
380 ;; is typed on a C++ inheritance continuation line, or a jit-lock
381 ;; chunk starts there.
383 ;; The new function works much like a matcher element in
384 ;; `font-lock-keywords'. It cuts out a little bit of the overhead
385 ;; compared to a real matcher. The main reason is however to pass the
386 ;; real search limit to the anchored matcher(s), since most (if not
387 ;; all) font-lock implementations arbitrarily limit anchored matchers
388 ;; to the same line, and also to insulate against various other
389 ;; irritating differences between the different (X)Emacs font-lock
392 ;; REGEXP is the matcher, which must be a regexp. Only matches
393 ;; where the beginning is outside any comment or string literal are
396 ;; HIGHLIGHTS is a list of highlight specs, just like in
397 ;; `font-lock-keywords', with these limitations: The face is always
398 ;; overridden (no big disadvantage, since hits in comments etc are
399 ;; filtered anyway), there is no "laxmatch", and an anchored matcher
400 ;; is always a form which must do all the fontification directly.
401 ;; `limit' is a variable bound to the real limit in the context of
402 ;; the anchored matcher forms.
404 ;; This function does not do any hidden buffer changes, but the
405 ;; generated functions will. (They are however used in places
406 ;; covered by the font-lock context.)
408 ;; Note: Replace `byte-compile' with `eval' to debug the generated
409 ;; lambda more easily.
412 (let ( ;; The font-lock package in Emacs is known to clobber
413 ;; `parse-sexp-lookup-properties' (when it exists).
414 (parse-sexp-lookup-properties
415 (cc-eval-when-compile
416 (boundp 'parse-sexp-lookup-properties
)))
418 (c-determine-limit 1000)))
420 (let ((here (point)))
421 (if (eq (car (c-beginning-of-decl-1 BOD-limit
)) 'same
)
424 ,(c-make-font-lock-search-form regexp highlights
))
427 (defun c-make-font-lock-context-search-function (normal &rest state-stanzas
)
428 ;; This function makes a byte compiled function that works much like
429 ;; a matcher element in `font-lock-keywords', with the following
430 ;; enhancement: the generated function will test for particular "font
431 ;; lock contexts" at the start of the region, i.e. is this point in
432 ;; the middle of some particular construct? if so the generated
433 ;; function will first fontify the tail of the construct, before
434 ;; going into the main loop and fontify full constructs up to limit.
436 ;; The generated function takes one parameter called `limit', and
437 ;; will fontify the region between POINT and LIMIT.
439 ;; NORMAL is a list of the form (REGEXP HIGHLIGHTS .....), and is
440 ;; used to fontify the "regular" bit of the region.
441 ;; STATE-STANZAS is list of elements of the form (STATE LIM REGEXP
442 ;; HIGHLIGHTS), each element coding one possible font lock context.
444 ;; o - REGEXP is a font-lock regular expression (NOT a function),
445 ;; o - HIGHLIGHTS is a list of zero or more highlighters as defined
446 ;; on page "Search-based Fontification" in the elisp manual. As
447 ;; yet (2009-06), they must have OVERRIDE set, and may not have
450 ;; o - STATE is the "font lock context" (e.g. in-cpp-expr) and is
452 ;; o - LIM is a lisp form whose evaluation will yield the limit
453 ;; position in the buffer for fontification by this stanza.
455 ;; This function does not do any hidden buffer changes, but the
456 ;; generated functions will. (They are however used in places
457 ;; covered by the font-lock context.)
459 ;; Note: Replace `byte-compile' with `eval' to debug the generated
460 ;; lambda more easily.
463 (let ( ;; The font-lock package in Emacs is known to clobber
464 ;; `parse-sexp-lookup-properties' (when it exists).
465 (parse-sexp-lookup-properties
466 (cc-eval-when-compile
467 (boundp 'parse-sexp-lookup-properties
))))
470 (let ((state (car stanza
))
472 (regexp (nth 2 stanza
))
473 (highlights (cdr (cddr stanza
))))
474 `(if (eq c-font-lock-context
',state
)
476 ,(c-make-font-lock-search-form
477 regexp highlights
)))))
479 ,(c-make-font-lock-search-form (car normal
) (cdr normal
))
482 ; (eval-after-load "edebug" ; 2006-07-09: def-edebug-spec is now in subr.el.
484 (def-edebug-spec c-fontify-types-and-refs let
*)
485 (def-edebug-spec c-make-syntactic-matcher t
)
486 ;; If there are literal quoted or backquoted highlight specs in
487 ;; the call to `c-make-font-lock-search-function' then let's
488 ;; instrument the forms in them.
489 (def-edebug-spec c-make-font-lock-search-function
490 (form &rest
&or
("quote" (&rest form
)) ("`" (&rest form
)) form
)));))
492 (defun c-fontify-recorded-types-and-refs ()
493 ;; Convert the ranges recorded on `c-record-type-identifiers' and
494 ;; `c-record-ref-identifiers' to fontification.
496 ;; This function does hidden buffer changes.
498 (while (consp c-record-type-identifiers
)
499 (setq elem
(car c-record-type-identifiers
)
500 c-record-type-identifiers
(cdr c-record-type-identifiers
))
501 (c-put-font-lock-face (car elem
) (cdr elem
)
502 'font-lock-type-face
))
503 (while c-record-ref-identifiers
504 (setq elem
(car c-record-ref-identifiers
)
505 c-record-ref-identifiers
(cdr c-record-ref-identifiers
))
506 ;; Note that the reference face is a variable that is
507 ;; dereferenced, since it's an alias in Emacs.
508 (c-put-font-lock-face (car elem
) (cdr elem
)
509 c-reference-face-name
))))
511 (c-lang-defconst c-cpp-matchers
512 "Font lock matchers for preprocessor directives and purely lexical
513 stuff. Used on level 1 and higher."
515 ;; Note: `c-font-lock-declarations' assumes that no matcher here
516 ;; sets `font-lock-type-face' in languages where
517 ;; `c-recognize-<>-arglists' is set.
519 t
`(,@(when (c-lang-const c-opt-cpp-prefix
)
520 (let* ((noncontinued-line-end "\\(\\=\\|\\(\\=\\|[^\\]\\)[\n\r]\\)")
521 (ncle-depth (regexp-opt-depth noncontinued-line-end
))
522 (sws-depth (c-lang-const c-syntactic-ws-depth
))
523 (nsws-depth (c-lang-const c-nonempty-syntactic-ws-depth
)))
525 `(;; The stuff after #error and #warning is a message, so
526 ;; fontify it as a string.
527 ,@(when (c-lang-const c-cpp-message-directives
)
528 (let* ((re (c-make-keywords-re 'appendable
; nil
529 (c-lang-const c-cpp-message-directives
)))
530 (re-depth (regexp-opt-depth re
)))
531 `((,(concat noncontinued-line-end
532 (c-lang-const c-opt-cpp-prefix
)
535 ,(+ ncle-depth re-depth
1) font-lock-string-face t
))))
537 ;; Fontify filenames in #include <...> as strings.
538 ,@(when (c-lang-const c-cpp-include-directives
)
539 (let* ((re (c-make-keywords-re nil
540 (c-lang-const c-cpp-include-directives
)))
541 (re-depth (regexp-opt-depth re
)))
542 ;; We used to use a font-lock "anchored matcher" here for
543 ;; the paren syntax. This failed when the ">" was at EOL,
544 ;; since `font-lock-fontify-anchored-keywords' terminated
545 ;; its loop at EOL without executing our lambda form at
547 `((,(c-make-font-lock-search-function
548 (concat noncontinued-line-end
549 (c-lang-const c-opt-cpp-prefix
)
551 (c-lang-const c-syntactic-ws
)
552 "\\(<[^>\n\r]*>?\\)")
553 `(,(+ ncle-depth re-depth sws-depth
1)
554 font-lock-string-face t
)
555 `((let ((beg (match-beginning
556 ,(+ ncle-depth re-depth sws-depth
1)))
557 (end (1- (match-end ,(+ ncle-depth re-depth
559 (if (eq (char-after end
) ?
>)
561 (c-mark-<-as-paren beg
)
562 (c-mark->-as-paren end
))
563 (c-unmark-<-
>-as-paren beg
)))
567 ,@(when (c-lang-const c-opt-cpp-macro-define
)
568 `((,(c-make-font-lock-search-function
570 noncontinued-line-end
571 (c-lang-const c-opt-cpp-prefix
)
572 (c-lang-const c-opt-cpp-macro-define
)
573 (c-lang-const c-nonempty-syntactic-ws
)
574 "\\(" (c-lang-const ; 1 + ncle + nsws
576 (concat "\\(" ; 2 + ncle + nsws + c-sym-key
577 ;; Macro with arguments - a "function".
578 "\\((\\)" ; 3 + ncle + nsws + c-sym-key
580 ;; Macro without arguments - a "variable".
583 `((if (match-beginning
584 ,(+ 3 ncle-depth nsws-depth
585 (c-lang-const c-symbol-key-depth
)))
587 ;; "Function". Fontify the name and the arguments.
589 (c-put-font-lock-face
590 (match-beginning ,(+ 1 ncle-depth nsws-depth
))
591 (match-end ,(+ 1 ncle-depth nsws-depth
))
592 'font-lock-function-name-face
)
595 ,(+ 3 ncle-depth nsws-depth
596 (c-lang-const c-symbol-key-depth
))))
598 (narrow-to-region (point-min) limit
)
601 (c-forward-syntactic-ws)
602 (looking-at c-symbol-key
))
604 (c-put-font-lock-face
605 (match-beginning 0) (match-end 0)
606 'font-lock-variable-name-face
)
607 (goto-char (match-end 0))
608 (c-forward-syntactic-ws)
609 (eq (char-after) ?
,)))
613 (c-put-font-lock-face
614 (match-beginning ,(+ 1 ncle-depth nsws-depth
))
615 (match-end ,(+ 1 ncle-depth nsws-depth
))
616 'font-lock-variable-name-face
)))))))
618 ;; Fontify cpp function names in preprocessor
619 ;; expressions in #if and #elif.
620 ,@(when (and (c-lang-const c-cpp-expr-directives
)
621 (c-lang-const c-cpp-expr-functions
))
622 (let ((ced-re (c-make-keywords-re t
623 (c-lang-const c-cpp-expr-directives
)))
624 (cef-re (c-make-keywords-re t
625 (c-lang-const c-cpp-expr-functions
))))
627 `((,(c-make-font-lock-context-search-function
628 `(,(concat noncontinued-line-end
629 (c-lang-const c-opt-cpp-prefix
)
630 ced-re
; 1 + ncle-depth
631 ;; Match the whole logical line to look
632 ;; for the functions in.
633 "\\(\\\\\\(.\\|[\n\r]\\)\\|[^\n\r]\\)*")
634 ((let ((limit (match-end 0)))
635 (while (re-search-forward ,cef-re limit
'move
)
636 (c-put-font-lock-face (match-beginning 1)
638 c-preprocessor-face-name
)))
639 (goto-char (match-end ,(1+ ncle-depth
)))))
641 (save-excursion (c-end-of-macro) (point))
643 (1 c-preprocessor-face-name t
)))))))
645 ;; Fontify the directive names.
646 (,(c-make-font-lock-search-function
647 (concat noncontinued-line-end
649 (c-lang-const c-opt-cpp-prefix
)
650 "[" (c-lang-const c-symbol-chars
) "]+"
652 `(,(1+ ncle-depth
) c-preprocessor-face-name t
)))
654 (eval .
(list ,(c-make-syntactic-matcher
655 (concat noncontinued-line-end
656 (c-lang-const c-opt-cpp-prefix
)
659 c-negation-char-face-name
663 ,@(when (c-major-mode-is 'pike-mode
)
664 ;; Recognize hashbangs in Pike.
665 `((eval .
(list "\\`#![^\n\r]*"
666 0 c-preprocessor-face-name
))))
668 ;; Make hard spaces visible through an inverted `font-lock-warning-face'.
672 (unless (c-face-name-p 'c-nonbreakable-space-face
)
673 (c-make-inverse-face 'font-lock-warning-face
674 'c-nonbreakable-space-face
))
675 ''c-nonbreakable-space-face
)))
678 (defun c-font-lock-invalid-string ()
679 ;; Assuming the point is after the opening character of a string,
680 ;; fontify that char with `font-lock-warning-face' if the string
681 ;; decidedly isn't terminated properly.
683 ;; This function does hidden buffer changes.
684 (let ((start (1- (point))))
686 (and (eq (elt (parse-partial-sexp start
(c-point 'eol
)) 8) start
)
687 (if (if (eval-when-compile (integerp ?c
))
689 (integerp c-multiline-string-start-char
)
691 (characterp c-multiline-string-start-char
))
692 ;; There's no multiline string start char before the
693 ;; string, so newlines aren't allowed.
694 (not (eq (char-before start
) c-multiline-string-start-char
))
695 ;; Multiline strings are allowed anywhere if
696 ;; c-multiline-string-start-char is t.
697 (not c-multiline-string-start-char
))
698 (if c-string-escaped-newlines
699 ;; There's no \ before the newline.
700 (not (eq (char-before (point)) ?
\\))
701 ;; Escaped newlines aren't supported.
703 (c-put-font-lock-face start
(1+ start
) 'font-lock-warning-face
)))))
705 (c-lang-defconst c-basic-matchers-before
706 "Font lock matchers for basic keywords, labels, references and various
707 other easily recognizable things that should be fontified before generic
708 casts and declarations are fontified. Used on level 2 and higher."
710 ;; Note: `c-font-lock-declarations' assumes that no matcher here
711 ;; sets `font-lock-type-face' in languages where
712 ;; `c-recognize-<>-arglists' is set.
714 t
`(;; Put a warning face on the opener of unclosed strings that
715 ;; can't span lines. Later font
716 ;; lock packages have a `font-lock-syntactic-face-function' for
717 ;; this, but it doesn't give the control we want since any
718 ;; fontification done inside the function will be
719 ;; unconditionally overridden.
720 ,(c-make-font-lock-search-function
721 ;; Match a char before the string starter to make
722 ;; `c-skip-comments-and-strings' work correctly.
723 (concat ".\\(" c-string-limit-regexp
"\\)")
724 '((c-font-lock-invalid-string)))
726 ;; Fontify C++ raw strings.
727 ,@(when (c-major-mode-is 'c
++-mode
)
728 '(c-font-lock-raw-strings))
730 ;; Fontify keyword constants.
731 ,@(when (c-lang-const c-constant-kwds
)
732 (let ((re (c-make-keywords-re nil
(c-lang-const c-constant-kwds
))))
733 (if (c-major-mode-is 'pike-mode
)
734 ;; No symbol is a keyword after "->" in Pike.
735 `((eval .
(list ,(concat "\\(\\=.?\\|[^>]\\|[^-]>\\)"
736 "\\<\\(" re
"\\)\\>")
737 2 c-constant-face-name
)))
738 `((eval .
(list ,(concat "\\<\\(" re
"\\)\\>")
739 1 c-constant-face-name
))))))
741 ;; Fontify all keywords except the primitive types.
742 ,(if (c-major-mode-is 'pike-mode
)
743 ;; No symbol is a keyword after "->" in Pike.
744 `(,(concat "\\(\\=.?\\|[^>]\\|[^-]>\\)"
745 "\\<" (c-lang-const c-regular-keywords-regexp
))
746 2 font-lock-keyword-face
)
747 `(,(concat "\\<" (c-lang-const c-regular-keywords-regexp
))
748 1 font-lock-keyword-face
))
750 ;; Fontify leading identifiers in fully qualified names like
751 ;; "foo::bar" in languages that supports such things.
752 ,@(when (c-lang-const c-opt-identifier-concat-key
)
753 (if (c-major-mode-is 'java-mode
)
754 ;; Java needs special treatment since "." is used both to
755 ;; qualify names and in normal indexing. Here we look for
756 ;; capital characters at the beginning of an identifier to
757 ;; recognize the class. "*" is also recognized to cover
758 ;; wildcard import declarations. All preceding dot separated
759 ;; identifiers are taken as package names and therefore
760 ;; fontified as references.
761 `(,(c-make-font-lock-search-function
762 ;; Search for class identifiers preceded by ".". The
763 ;; anchored matcher takes it from there.
764 (concat (c-lang-const c-opt-identifier-concat-key
)
765 (c-lang-const c-simple-ws
) "*"
768 "[" (c-lang-const c-symbol-chars
) "]*"
773 (goto-char (1+ (match-beginning 0)))
774 (while (and (eq (char-before) ?.
)
777 (c-backward-syntactic-ws)
778 (setq id-end
(point))
779 (< (skip-chars-backward
780 ,(c-lang-const c-symbol-chars
)) 0))
781 (not (get-text-property (point) 'face
)))
782 (c-put-font-lock-face (point) id-end
783 c-reference-face-name
)
784 (c-backward-syntactic-ws)))
786 (goto-char (match-end 0)))))
789 ;; Must use a function here since we match longer than
790 ;; we want to move before doing a new search. This is
791 ;; not necessary for XEmacs since it restarts the
792 ;; search from the end of the first highlighted
793 ;; submatch (something that causes problems in other
796 (while (re-search-forward
797 ,(concat "\\(\\<" ; 1
798 "\\(" (c-lang-const c-symbol-key
) "\\)" ; 2
799 (c-lang-const c-simple-ws
) "*"
800 (c-lang-const c-opt-identifier-concat-key
)
801 (c-lang-const c-simple-ws
) "*"
804 (c-lang-const c-opt-after-id-concat-key
)
808 (goto-char (match-beginning 0))
809 (c-skip-comments-and-strings limit
))
810 (or (get-text-property (match-beginning 2) 'face
)
811 (c-put-font-lock-face (match-beginning 2)
813 c-reference-face-name
))
814 (goto-char (match-end 1))))))))))
816 ;; Fontify the special declarations in Objective-C.
817 ,@(when (c-major-mode-is 'objc-mode
)
818 `(;; Fontify class names in the beginning of message expressions.
819 ,(c-make-font-lock-search-function
821 '((c-fontify-types-and-refs ()
822 (c-forward-syntactic-ws limit
)
823 (let ((start (point)))
824 ;; In this case we accept both primitive and known types.
825 (when (eq (c-forward-type) 'known
)
827 (let ((c-promote-possible-types t
))
829 (if (> (point) limit
) (goto-char limit
)))))
831 ;; The @interface/@implementation/@protocol directives.
832 ,(c-make-font-lock-search-function
835 '("@interface" "@implementation" "@protocol")
838 '((c-fontify-types-and-refs
839 (;; The font-lock package in Emacs is known to clobber
840 ;; `parse-sexp-lookup-properties' (when it exists).
841 (parse-sexp-lookup-properties
842 (cc-eval-when-compile
843 (boundp 'parse-sexp-lookup-properties
))))
844 (c-forward-objc-directive)
846 (goto-char (match-beginning 0))))))
848 (eval .
(list "\\(!\\)[^=]" 1 c-negation-char-face-name
))
851 (defun c-font-lock-complex-decl-prepare (limit)
852 ;; This function will be called from font-lock for a region bounded by POINT
853 ;; and LIMIT, as though it were to identify a keyword for
854 ;; font-lock-keyword-face. It always returns NIL to inhibit this and
855 ;; prevent a repeat invocation. See elisp/lispref page "Search-based
858 ;; Called before any of the matchers in `c-complex-decl-matchers'.
860 ;; This function does hidden buffer changes.
862 ;;(message "c-font-lock-complex-decl-prepare %s %s" (point) limit)
864 ;; Clear the list of found types if we start from the start of the
865 ;; buffer, to make it easier to get rid of misspelled types and
866 ;; variables that have gotten recognized as types in malformed code.
868 (c-clear-found-types))
870 ;; Clear the c-type char properties which mark the region, to recalculate
871 ;; them properly. The most interesting properties are those put on the
872 ;; closest token before the region.
875 (c-backward-syntactic-ws)
876 (c-clear-char-properties
877 (if (and (not (bobp))
878 (memq (c-get-char-property (1- (point)) 'c-type
)
887 ;; Update `c-state-cache' to the beginning of the region. This will
888 ;; make `c-beginning-of-syntax' go faster when it's used later on,
889 ;; and it's near the point most of the time.
892 ;; Check if the fontified region starts inside a declarator list so
893 ;; that `c-font-lock-declarators' should be called at the start.
894 ;; The declared identifiers are font-locked correctly as types, if
895 ;; that is what they are.
896 (let ((prop (save-excursion
897 (c-backward-syntactic-ws)
899 (c-get-char-property (1- (point)) 'c-type
)))))
900 (when (memq prop
'(c-decl-id-start c-decl-type-start
))
901 (c-forward-syntactic-ws limit
)
902 (c-font-lock-declarators limit t
(eq prop
'c-decl-type-start
)
903 (c-bs-at-toplevel-p (point)))))
905 (setq c-font-lock-context
;; (c-guess-font-lock-context)
907 (if (and c-cpp-expr-intro-re
908 (c-beginning-of-macro)
909 (looking-at c-cpp-expr-intro-re
))
913 (defun c-font-lock-<>-arglists
(limit)
914 ;; This function will be called from font-lock for a region bounded by POINT
915 ;; and LIMIT, as though it were to identify a keyword for
916 ;; font-lock-keyword-face. It always returns NIL to inhibit this and
917 ;; prevent a repeat invocation. See elisp/lispref page "Search-based
920 ;; Fontify types and references in names containing angle bracket
921 ;; arglists from the point to LIMIT. Note that
922 ;; `c-font-lock-declarations' has already handled many of them.
924 ;; This function might do hidden buffer changes.
926 (let (;; The font-lock package in Emacs is known to clobber
927 ;; `parse-sexp-lookup-properties' (when it exists).
928 (parse-sexp-lookup-properties
929 (cc-eval-when-compile
930 (boundp 'parse-sexp-lookup-properties
)))
931 (c-parse-and-markup-<>-arglists t
)
932 c-restricted-
<>-arglists
933 id-start id-end id-face pos kwd-sym
)
935 (while (and (< (point) limit
)
936 (re-search-forward c-opt-
<>-arglist-start limit t
))
938 (setq id-start
(match-beginning 1)
943 (unless (c-skip-comments-and-strings limit
)
945 c-restricted-
<>-arglists nil
946 id-face
(get-text-property id-start
'face
))
949 ((eq id-face
'font-lock-type-face
)
950 ;; The identifier got the type face so it has already been
951 ;; handled in `c-font-lock-declarations'.
954 ((eq id-face
'font-lock-keyword-face
)
955 (when (looking-at c-opt-
<>-sexp-key
)
956 ;; There's a special keyword before the "<" that tells
957 ;; that it's an angle bracket arglist.
958 (setq kwd-sym
(c-keyword-sym (match-string 1)))))
961 ;; There's a normal identifier before the "<". If we're not in
962 ;; a declaration context then we set `c-restricted-<>-arglists'
963 ;; to avoid recognizing templates in function calls like "foo (a
965 (c-backward-syntactic-ws)
966 (when (and (memq (char-before) '(?\
( ?
,))
967 (not (eq (get-text-property (1- (point)) 'c-type
)
969 (setq c-restricted-
<>-arglists t
))
974 ;; Check for comment/string both at the identifier and
976 (unless (c-skip-comments-and-strings limit
)
978 (c-fontify-types-and-refs ()
979 (when (c-forward-<>-arglist
(c-keyword-member
980 kwd-sym
'c-
<>-type-kwds
))
981 (when (and c-opt-identifier-concat-key
982 (not (get-text-property id-start
'face
)))
983 (c-forward-syntactic-ws)
984 (cond ((looking-at c-opt-identifier-concat-key
)
985 (c-put-font-lock-face id-start id-end
986 c-reference-face-name
))
987 ((eq (char-after) ?\
())
988 (t (c-put-font-lock-face id-start id-end
989 'font-lock-type-face
))))))
995 (defun c-font-lock-declarators (limit list types not-top
)
996 ;; Assuming the point is at the start of a declarator in a declaration,
997 ;; fontify the identifier it declares. (If TYPES is set, it does this via
998 ;; the macro `c-fontify-types-and-refs'.)
1000 ;; If LIST is non-nil, also fontify the ids in any following declarators in
1001 ;; a comma separated list (e.g. "foo" and "*bar" in "int foo = 17, *bar;");
1002 ;; additionally, mark the commas with c-type property 'c-decl-id-start or
1003 ;; 'c-decl-type-start (according to TYPES). Stop at LIMIT.
1005 ;; If TYPES is non-nil, fontify all identifiers as types. If NOT-TOP is
1006 ;; non-nil, we are not at the top-level ("top-level" includes being directly
1007 ;; inside a class or namespace, etc.).
1009 ;; Nil is always returned. The function leaves point at the delimiter after
1010 ;; the last declarator it processes.
1012 ;; This function might do hidden buffer changes.
1014 ;;(message "c-font-lock-declarators from %s to %s" (point) limit)
1015 (c-fontify-types-and-refs
1016 ((pos (point)) next-pos id-start id-end
1019 id-face got-type got-init
1020 c-last-identifier-range
1021 (separator-prop (if types
'c-decl-type-start
'c-decl-id-start
))
1024 ;; The following `while' fontifies a single declarator id each time round.
1025 ;; It loops only when LIST is non-nil.
1027 (and pos
(setq decl-res
(c-forward-declarator limit
)))
1028 (setq next-pos
(point)
1029 id-start
(car decl-res
)
1030 id-face
(if (and (eq (char-after) ?\
()
1031 (or (not (c-major-mode-is 'c
++-mode
))
1033 (car (cddr (cddr decl-res
))) ; Id is in
1037 (c-forward-syntactic-ws)
1038 (looking-at "[*&]")))
1039 (not (car (cddr decl-res
))) ; brackets-after-id
1040 (or (not (c-major-mode-is 'c
++-mode
))
1042 (let (c-last-identifier-range)
1044 (c-forward-syntactic-ws)
1048 (if (eq (char-after) ?\
))
1049 (throw 'is-function t
))
1050 (setq got-type
(c-forward-type))
1053 (throw 'is-function nil
))
1054 ((not (eq got-type
'maybe
))
1055 (throw 'is-function t
)))
1056 (c-forward-declarator limit t
)
1057 (eq (char-after) ?
,))
1059 (c-forward-syntactic-ws))
1061 'font-lock-function-name-face
1062 'font-lock-variable-name-face
)
1063 got-init
(and (cadr (cddr decl-res
)) ; got-init
1067 ;; Register and fontify the identifier as a type.
1068 (let ((c-promote-possible-types t
))
1069 (goto-char id-start
)
1071 ;; Fontify the last symbol in the identifier if it isn't fontified
1072 ;; already. The check is necessary only in certain cases where this
1073 ;; function is used "sloppily", e.g. in `c-simple-decl-matchers'.
1074 (when (and c-last-identifier-range
1075 (not (get-text-property (car c-last-identifier-range
)
1077 (c-put-font-lock-face (car c-last-identifier-range
)
1078 (cdr c-last-identifier-range
)
1081 (goto-char next-pos
)
1082 (setq pos nil
) ; So as to terminate the enclosing `while' form.
1084 ;; Jump past any initializer or function prototype to see if
1085 ;; there's a ',' to continue at.
1086 (cond ((eq id-face
'font-lock-function-name-face
)
1087 ;; Skip a parenthesized initializer (C++) or a function
1089 (if (c-safe (c-forward-sexp 1) t
) ; over the parameter list.
1090 (c-forward-syntactic-ws limit
)
1091 (goto-char limit
))) ; unbalanced parens
1093 (got-init ; "=" sign OR opening "(", "[", or "{"
1094 ;; Skip an initializer expression. If we're at a '='
1095 ;; then accept a brace list directly after it to cope
1096 ;; with array initializers. Otherwise stop at braces
1097 ;; to avoid going past full function and class blocks.
1098 (and (if (and (eq got-init ?
=)
1099 (= (c-forward-token-2 1 nil limit
) 0)
1101 (c-safe (c-forward-sexp) t
) ; over { .... }
1104 ;; FIXME: Should look for c-decl-end markers here;
1105 ;; we might go far into the following declarations
1106 ;; in e.g. ObjC mode (see e.g. methods-4.m).
1107 (c-syntactic-re-search-forward "[;,{]" limit
'move t
)
1110 (t (c-forward-syntactic-ws limit
)))
1112 ;; If a ',' is found we set pos to the next declarator and iterate.
1113 (when (and (< (point) limit
) (looking-at ","))
1114 (c-put-char-property (point) 'c-type separator-prop
)
1116 (c-forward-syntactic-ws limit
)
1117 (setq pos
(point)))))) ; acts to make the `while' form continue.
1120 (defun c-font-lock-declarations (limit)
1121 ;; Fontify all the declarations, casts and labels from the point to LIMIT.
1122 ;; Assumes that strings and comments have been fontified already.
1124 ;; This function will be called from font-lock for a region bounded by POINT
1125 ;; and LIMIT, as though it were to identify a keyword for
1126 ;; font-lock-keyword-face. It always returns NIL to inhibit this and
1127 ;; prevent a repeat invocation. See elisp/lispref page "Search-based
1130 ;; This function might do hidden buffer changes.
1132 ;;(message "c-font-lock-declarations search from %s to %s" (point) limit)
1135 (let (;; The position where `c-find-decl-spots' last stopped.
1137 ;; o - 'decl if we're in an arglist containing declarations
1138 ;; (but if `c-recognize-paren-inits' is set it might also be
1139 ;; an initializer arglist);
1140 ;; o - '<> if the arglist is of angle bracket type;
1141 ;; o - 'arglist if it's some other arglist;
1142 ;; o - nil, if not in an arglist at all. This includes the
1143 ;; parenthesized condition which follows "if", "while", etc.
1145 ;; A list of starting positions of possible type declarations, or of
1146 ;; the typedef preceding one, if any.
1148 ;; The result from `c-forward-decl-or-cast-1'.
1150 ;; The maximum of the end positions of all the checked type
1151 ;; decl expressions in the successfully identified
1152 ;; declarations. The position might be either before or
1153 ;; after the syntactic whitespace following the last token
1154 ;; in the type decl expression.
1155 (max-type-decl-end 0)
1156 ;; Same as `max-type-decl-*', but used when we're before
1158 (max-type-decl-end-before-token 0)
1159 ;; End of <..> construct which has had c-<>-arg-sep c-type
1160 ;; properties set within it.
1162 ;; Set according to the context to direct the heuristics for
1163 ;; recognizing C++ templates.
1164 c-restricted-
<>-arglists
1165 ;; Turn on recording of identifier ranges in
1166 ;; `c-forward-decl-or-cast-1' and `c-forward-label' for
1167 ;; later fontification.
1168 (c-record-type-identifiers t
)
1170 c-record-ref-identifiers
1171 ;; Make `c-forward-type' calls mark up template arglists if
1172 ;; it finds any. That's necessary so that we later will
1173 ;; stop inside them to fontify types there.
1174 (c-parse-and-markup-<>-arglists t
)
1175 lbrace
; position of some {.
1176 ;; The font-lock package in Emacs is known to clobber
1177 ;; `parse-sexp-lookup-properties' (when it exists).
1178 (parse-sexp-lookup-properties
1179 (cc-eval-when-compile
1180 (boundp 'parse-sexp-lookup-properties
))
1183 ;; Below we fontify a whole declaration even when it crosses the limit,
1184 ;; to avoid gaps when jit/lazy-lock fontifies the file a block at a
1185 ;; time. That is however annoying during editing, e.g. the following is
1186 ;; a common situation while the first line is being written:
1189 ;; some_other_variable = 0;
1191 ;; font-lock will put the limit at the beginning of the second line
1192 ;; here, and if we go past it we'll fontify "my_variable" as a type and
1193 ;; "some_other_variable" as an identifier, and the latter will not
1194 ;; correct itself until the second line is changed. To avoid that we
1195 ;; narrow to the limit if the region to fontify is a single line.
1196 (if (<= limit
(c-point 'bonl
))
1200 ;; Narrow after any operator chars following the limit though,
1201 ;; since those characters can be useful in recognizing a
1202 ;; declaration (in particular the '{' that opens a function body
1203 ;; after the header).
1205 (skip-chars-forward c-nonsymbol-chars
)
1211 (eval c-maybe-decl-faces
)
1213 (lambda (match-pos inside-macro
&optional toplev
)
1214 ;; Note to maintainers: don't use `limit' inside this lambda form;
1215 ;; c-find-decl-spots sometimes narrows to less than `limit'.
1216 (setq start-pos
(point))
1218 ;; The result of the form below is true when we don't recognize a
1219 ;; declaration or cast, and we don't recognize a "non-decl",
1220 ;; typically a brace list.
1221 (if (or (and (eq (get-text-property (point) 'face
)
1222 'font-lock-keyword-face
)
1223 (looking-at c-not-decl-init-keywords
))
1224 (and c-macro-with-semi-re
1225 (looking-at c-macro-with-semi-re
))) ; 2008-11-04
1226 ;; Don't do anything more if we're looking at a keyword that
1227 ;; can't start a declaration.
1230 ;; Set `context' and `c-restricted-<>-arglists'. Look for
1231 ;; "<" for the sake of C++-style template arglists.
1232 ;; Ignore "(" when it's part of a control flow construct
1234 (let ((type (and (> match-pos
(point-min))
1235 (c-get-char-property (1- match-pos
) 'c-type
))))
1236 (cond ((not (memq (char-before match-pos
) '(?\
( ?
, ?\
[ ?
< ?
{)))
1237 (setq context
(and toplev
'top
)
1238 c-restricted-
<>-arglists nil
))
1239 ;; A control flow expression or a decltype
1240 ((and (eq (char-before match-pos
) ?\
()
1242 (goto-char match-pos
)
1244 (c-backward-token-2)
1245 (or (looking-at c-block-stmt-2-key
)
1246 (looking-at c-block-stmt-1-2-key
)
1247 (looking-at c-typeof-key
))))
1249 c-restricted-
<>-arglists t
))
1251 ((<= match-pos
(point-min))
1252 (setq context
'arglist
1253 c-restricted-
<>-arglists t
))
1254 ;; Got a cached hit in a declaration arglist.
1255 ((eq type
'c-decl-arg-start
)
1257 c-restricted-
<>-arglists nil
))
1258 ;; We're inside (probably) a brace list.
1259 ((eq type
'c-not-decl
)
1260 (setq context
'not-decl
1261 c-restricted-
<>-arglists nil
))
1262 ;; Inside a C++11 lambda function arglist.
1263 ((and (c-major-mode-is 'c
++-mode
)
1264 (eq (char-before match-pos
) ?\
()
1266 (goto-char match-pos
)
1267 (c-backward-token-2)
1269 (c-safe (goto-char (scan-sexps (point) -
1)))
1270 (c-looking-at-c++-lambda-capture-list
))))
1272 c-restricted-
<>-arglists nil
)
1273 (c-put-char-property (1- match-pos
) 'c-type
1275 ;; We're inside a brace list.
1276 ((and (eq (char-before match-pos
) ?
{)
1278 (goto-char (1- match-pos
))
1280 (c-looking-at-or-maybe-in-bracelist))))
1281 (setq context
'not-decl
1282 c-restricted-
<>-arglists nil
)
1283 (c-put-char-property (1- match-pos
) 'c-type
1285 ;; We're inside an "ordinary" open brace.
1286 ((eq (char-before match-pos
) ?
{)
1287 (setq context
(and toplev
'top
)
1288 c-restricted-
<>-arglists nil
))
1289 ;; Inside an angle bracket arglist.
1290 ((or (eq type
'c-
<>-arg-sep
)
1291 (eq (char-before match-pos
) ?
<))
1293 c-restricted-
<>-arglists nil
))
1294 ;; Got a cached hit in some other type of arglist.
1296 (setq context
'arglist
1297 c-restricted-
<>-arglists t
))
1299 (< match-pos max-type-decl-end-before-token
)
1300 (< match-pos max-type-decl-end
))
1301 ;; The point is within the range of a previously
1302 ;; encountered type decl expression, so the arglist
1303 ;; is probably one that contains declarations.
1304 ;; However, if `c-recognize-paren-inits' is set it
1305 ;; might also be an initializer arglist.
1307 c-restricted-
<>-arglists nil
)
1308 ;; The result of this check is cached with a char
1309 ;; property on the match token, so that we can look
1310 ;; it up again when refontifying single lines in a
1311 ;; multiline declaration.
1312 (c-put-char-property (1- match-pos
)
1313 'c-type
'c-decl-arg-start
))
1314 ;; Got an open paren preceded by an arith operator.
1315 ((and (eq (char-before match-pos
) ?\
()
1317 (and (zerop (c-backward-token-2 2))
1318 (looking-at c-arithmetic-op-regexp
))))
1320 c-restricted-
<>-arglists nil
))
1321 (t (setq context
'arglist
1322 c-restricted-
<>-arglists t
))))
1324 ;; Check we haven't missed a preceding "typedef".
1325 (when (not (looking-at c-typedef-key
))
1326 (c-backward-syntactic-ws)
1327 (c-backward-token-2)
1328 (or (looking-at c-typedef-key
)
1329 (goto-char start-pos
)))
1331 ;; In QT, "more" is an irritating keyword that expands to nothing.
1332 ;; We skip over it to prevent recognition of "more slots: <symbol>"
1333 ;; as a bitfield declaration.
1334 (when (and (c-major-mode-is 'c
++-mode
)
1336 (concat "\\(more\\)\\([^" c-symbol-chars
"]\\|$\\)")))
1337 (goto-char (match-end 1))
1338 (c-forward-syntactic-ws))
1340 ;; Now analyze the construct.
1341 (if (eq context
'not-decl
)
1343 (setq decl-or-cast nil
)
1344 (if (c-syntactic-re-search-forward
1345 "," (min limit
(point-max)) 'at-limit t
)
1346 (c-put-char-property (1- (point)) 'c-type
'c-not-decl
))
1349 (c-forward-decl-or-cast-1
1350 match-pos context last-cast-end
))
1352 ;; Ensure that c-<>-arg-sep c-type properties are in place on the
1353 ;; commas separating the arguments inside template/generic <..>s.
1354 (when (and (eq (char-before match-pos
) ?
<)
1355 (> match-pos max-
<>-end
))
1357 (goto-char match-pos
)
1358 (c-backward-token-2)
1360 (eq (char-after) ?
<)
1361 (let ((c-restricted-<>-arglists
1363 (c-backward-token-2)
1365 (not (looking-at c-opt-
<>-sexp-key
))
1366 (progn (c-backward-syntactic-ws)
1367 (memq (char-before) '(?\
( ?
,)))
1368 (not (eq (c-get-char-property (1- (point))
1370 'c-decl-arg-start
))))))
1371 (c-forward-<>-arglist nil
)))
1372 (setq max-
<>-end
(point)))))
1375 ((eq decl-or-cast
'cast
)
1376 ;; Save the position after the previous cast so we can feed
1377 ;; it to `c-forward-decl-or-cast-1' in the next round. That
1378 ;; helps it discover cast chains like "(a) (b) c".
1379 (setq last-cast-end
(point))
1380 (c-fontify-recorded-types-and-refs)
1384 ;; We've found a declaration.
1386 ;; Set `max-type-decl-end' or `max-type-decl-end-before-token'
1387 ;; under the assumption that we're after the first type decl
1388 ;; expression in the declaration now. That's not really true;
1389 ;; we could also be after a parenthesized initializer
1390 ;; expression in C++, but this is only used as a last resort
1391 ;; to slant ambiguous expression/declarations, and overall
1392 ;; it's worth the risk to occasionally fontify an expression
1393 ;; as a declaration in an initializer expression compared to
1394 ;; getting ambiguous things in normal function prototypes
1395 ;; fontified as expressions.
1397 (when (> (point) max-type-decl-end-before-token
)
1398 (setq max-type-decl-end-before-token
(point)))
1399 (when (> (point) max-type-decl-end
)
1400 (setq max-type-decl-end
(point))))
1402 ;; Do we have an expression as the second or third clause of
1403 ;; a "for" paren expression?
1406 (car (cddr decl-or-cast
)) ; maybe-expression flag.
1407 (goto-char start-pos
)
1408 (c-go-up-list-backward)
1409 (eq (char-after) ?\
()
1410 (progn (c-backward-syntactic-ws)
1411 (c-simple-skip-symbol-backward))
1412 (looking-at c-paren-stmt-key
)
1413 (progn (goto-char match-pos
)
1414 (while (and (eq (char-before) ?\
))
1415 (c-go-list-backward))
1416 (c-backward-syntactic-ws))
1417 (eq (char-before) ?\
;))))
1418 ;; We've got an expression in "for" parens. Remove the
1419 ;; "type" that would spuriously get fontified.
1420 (let ((elt (and (consp c-record-type-identifiers
)
1421 (assq (cadr (cddr decl-or-cast
))
1422 c-record-type-identifiers
))))
1424 (setq c-record-type-identifiers
1425 (c-delq-from-dotted-list
1426 elt c-record-type-identifiers
)))
1428 ;; Back up to the type to fontify the declarator(s).
1429 (goto-char (car decl-or-cast
))
1432 (if (not (memq context
'(nil top
)))
1433 ;; Should normally not fontify a list of
1434 ;; declarators inside an arglist, but the first
1435 ;; argument in the ';' separated list of a "for"
1436 ;; statement is an exception.
1437 (when (eq (char-before match-pos
) ?\
()
1439 (goto-char (1- match-pos
))
1440 (c-backward-syntactic-ws)
1441 (and (c-simple-skip-symbol-backward)
1442 (looking-at c-paren-stmt-key
))))
1445 ;; Fix the `c-decl-id-start' or `c-decl-type-start' property
1446 ;; before the first declarator if it's a list.
1447 ;; `c-font-lock-declarators' handles the rest.
1450 (c-backward-syntactic-ws)
1452 (c-put-char-property (1- (point)) 'c-type
1453 (if (cadr decl-or-cast
)
1455 'c-decl-id-start
)))))
1457 (c-font-lock-declarators
1458 (min limit
(point-max)) decl-list
1459 (cadr decl-or-cast
) (not toplev
)))
1461 ;; A declaration has been successfully identified, so do all the
1462 ;; fontification of types and refs that've been recorded.
1463 (c-fontify-recorded-types-and-refs)
1468 ;; It was a false alarm. Check if we're in a label (or other
1469 ;; construct with `:' except bitfield) instead.
1470 (goto-char start-pos
)
1471 (when (setq label-type
(c-forward-label t match-pos nil
))
1472 ;; Can't use `c-fontify-types-and-refs' here since we
1473 ;; use the label face at times.
1474 (cond ((eq label-type
'goto-target
)
1475 (c-put-font-lock-face (caar c-record-ref-identifiers
)
1476 (cdar c-record-ref-identifiers
)
1478 ((eq label-type
'qt-1kwd-colon
)
1479 (c-put-font-lock-face (caar c-record-ref-identifiers
)
1480 (cdar c-record-ref-identifiers
)
1481 'font-lock-keyword-face
))
1482 ((eq label-type
'qt-2kwds-colon
)
1485 (c-put-font-lock-face (car kwd
) (cdr kwd
)
1486 'font-lock-keyword-face
))
1487 c-record-ref-identifiers
)))
1488 (setq c-record-ref-identifiers nil
)
1489 ;; `c-forward-label' has probably added a `c-decl-end'
1490 ;; marker, so return t to `c-find-decl-spots' to signal
1496 (defun c-font-lock-enum-body (limit)
1497 ;; Fontify the identifiers of each enum we find by searching forward.
1499 ;; This function will be called from font-lock for a region bounded by POINT
1500 ;; and LIMIT, as though it were to identify a keyword for
1501 ;; font-lock-keyword-face. It always returns NIL to inhibit this and
1502 ;; prevent a repeat invocation. See elisp/lispref page "Search-based
1504 (while (search-forward-regexp c-enum-clause-introduction-re limit t
)
1505 (when (save-excursion
1507 (c-backward-over-enum-header))
1508 (c-forward-syntactic-ws)
1509 (c-font-lock-declarators limit t nil t
)))
1512 (defun c-font-lock-enum-tail (limit)
1513 ;; Fontify an enum's identifiers when POINT is within the enum's brace
1516 ;; This function will be called from font-lock for a region bounded by POINT
1517 ;; and LIMIT, as though it were to identify a keyword for
1518 ;; font-lock-keyword-face. It always returns NIL to inhibit this and
1519 ;; prevent a repeat invocation. See elisp/lispref page "Search-based
1522 ;; Note that this function won't attempt to fontify beyond the end of the
1523 ;; current enum block, if any.
1524 (let* ((paren-state (c-parse-state))
1525 (encl-pos (c-most-enclosing-brace paren-state
)))
1528 (eq (char-after encl-pos
) ?\
{)
1530 (goto-char encl-pos
)
1531 (c-backward-over-enum-header)))
1532 (c-syntactic-skip-backward "^{," nil t
)
1533 (c-put-char-property (1- (point)) 'c-type
'c-decl-id-start
)
1535 (c-forward-syntactic-ws)
1536 (c-font-lock-declarators limit t nil t
)))
1539 (defun c-font-lock-cut-off-declarators (limit)
1540 ;; Fontify any declarators "cut off" from their declaring type at the start
1541 ;; of the region being fontified.
1543 ;; This function will be called from font-lock- for a region bounded by
1544 ;; POINT and LIMIT, as though it were to identify a keyword for
1545 ;; font-lock-keyword-face. It always returns NIL to inhibit this and
1546 ;; prevent a repeat invocation. See elisp/lispref page "Search-based
1548 (let ((decl-search-lim (c-determine-limit 1000))
1549 paren-state bod-res is-typedef encl-pos
1551 c-recognize-knr-p
) ; Strictly speaking, bogus, but it
1552 ; speeds up lisp.h tremendously.
1554 (when (not (c-back-over-member-initializers))
1556 (looking-at "\\s(\\|\\s)"))
1558 (c-syntactic-skip-backward "^;{}" decl-search-lim t
)
1559 (when (eq (char-before) ?
})
1560 (c-go-list-backward) ; brace block of struct, etc.?
1561 (c-syntactic-skip-backward "^;{}" decl-search-lim t
))
1563 (memq (char-before) '(?\
; ?{ ?})))
1564 (c-forward-syntactic-ws)
1565 ;; We're now putatively at the declaration.
1566 (setq paren-state
(c-parse-state))
1567 ;; At top level or inside a "{"?
1568 (if (or (not (setq encl-pos
1569 (c-most-enclosing-brace paren-state
)))
1570 (eq (char-after encl-pos
) ?\
{))
1572 (when (looking-at c-typedef-key
) ; "typedef"
1574 (goto-char (match-end 0))
1575 (c-forward-syntactic-ws))
1576 ;; At a real declaration?
1577 (if (memq (c-forward-type t
) '(t known found decltype
))
1578 (c-font-lock-declarators
1579 limit t is-typedef
(not (c-bs-at-toplevel-p here
)))))))))
1582 (defun c-font-lock-enclosing-decls (limit)
1583 ;; Fontify the declarators of (nested) declarations we're in the middle of.
1584 ;; This is mainly for when a jit-lock etc. chunk starts inside the brace
1585 ;; block of a struct/union/class, etc.
1587 ;; This function will be called from font-lock for a region bounded by POINT
1588 ;; and LIMIT, as though it were to identify a keyword for
1589 ;; font-lock-keyword-face. It always returns NIL to inhibit this and
1590 ;; prevent a repeat invocation. See elisp/lispref page "Search-based
1592 (let* ((paren-state (c-parse-state))
1593 (decl-search-lim (c-determine-limit 1000))
1595 ;; Are we in any nested struct/union/class/etc. braces?
1597 (setq ps-elt
(car paren-state
)
1598 paren-state
(cdr paren-state
))
1599 (when (and (atom ps-elt
)
1600 (eq (char-after ps-elt
) ?\
{))
1602 (c-syntactic-skip-backward "^;{}" decl-search-lim
)
1604 (memq (char-before) '(?\
; ?})))
1605 (c-forward-syntactic-ws)
1606 (setq in-typedef
(looking-at c-typedef-key
))
1607 (if in-typedef
(c-forward-token-2))
1608 (when (and c-opt-block-decls-with-vars-key
1609 (looking-at c-opt-block-decls-with-vars-key
))
1611 (when (c-safe (c-forward-sexp))
1612 (c-forward-syntactic-ws)
1613 (c-font-lock-declarators limit t in-typedef
1614 (not (c-bs-at-toplevel-p (point)))))))))))
1616 (defun c-font-lock-raw-strings (limit)
1617 ;; Fontify C++ raw strings.
1619 ;; This function will be called from font-lock for a region bounded by POINT
1620 ;; and LIMIT, as though it were to identify a keyword for
1621 ;; font-lock-keyword-face. It always returns NIL to inhibit this and
1622 ;; prevent a repeat invocation. See elisp/lispref page "Search-based
1624 (let* ((state (c-state-semi-pp-to-literal (point)))
1625 (string-start (and (eq (cadr state
) 'string
)
1626 (car (cddr state
))))
1627 (raw-id (and string-start
1629 (goto-char string-start
)
1630 (and (eq (char-before) ?R
)
1631 (looking-at "\"\\([^ ()\\\n\r\t]\\{0,16\\}\\)(")
1632 (match-string-no-properties 1))))))
1633 (while (< (point) limit
)
1636 (if (search-forward-regexp (concat ")\\(" (regexp-quote raw-id
) "\\)\"")
1638 (c-put-font-lock-face (match-beginning 1) (point) 'default
))
1641 (when (search-forward-regexp
1642 "R\\(\"\\)\\([^ ()\\\n\r\t]\\{0,16\\}\\)(" limit
'limit
)
1645 (eq (c-get-char-property (1- (point)) 'face
)
1646 'font-lock-warning-face
))
1647 (eq (c-get-char-property (point) 'face
) 'font-lock-string-face
)
1648 (and (equal (c-get-char-property (match-end 2) 'syntax-table
) '(1))
1649 (equal (c-get-char-property (match-beginning 1) 'syntax-table
)
1651 (let ((paren-prop (c-get-char-property (1- (point)) 'syntax-table
)))
1654 (c-put-font-lock-face (match-beginning 0) (match-end 0)
1655 'font-lock-warning-face
)
1658 (equal paren-prop
'(15))
1659 (not (c-search-forward-char-property 'syntax-table
'(15) limit
)))
1661 (c-put-font-lock-face (match-beginning 1) (match-end 2) 'default
)
1662 (setq raw-id
(match-string-no-properties 2)))))))))
1665 (defun c-font-lock-c++-lambda-captures
(limit)
1666 ;; Fontify the lambda capture component of C++ lambda declarations.
1668 ;; This function will be called from font-lock for a region bounded by POINT
1669 ;; and LIMIT, as though it were to identify a keyword for
1670 ;; font-lock-keyword-face. It always returns NIL to inhibit this and
1671 ;; prevent a repeat invocation. See elisp/lispref page "Search-based
1673 (let (mode capture-default id-start id-end declaration sub-begin sub-end
)
1674 (while (and (< (point) limit
)
1675 (search-forward "[" limit t
))
1676 (when (progn (backward-char)
1678 (c-looking-at-c++-lambda-capture-list
)
1680 (c-forward-syntactic-ws)
1681 (setq mode
(and (memq (char-after) '(?
= ?
&))
1683 ;; Is the first element of the list a bare "=" or "&"?
1686 (c-forward-syntactic-ws)
1687 (if (memq (char-after) '(?
, ?\
]))
1689 (setq capture-default mode
)
1690 (when (eq (char-after) ?
,)
1692 (c-forward-syntactic-ws)))
1693 (c-backward-token-2)))
1695 ;; Go round the following loop once per captured item. We use "\\s)"
1696 ;; rather than "\\]" here to avoid infinite looping in this situation:
1697 ;; "unsigned items [] { [ }". The second "[" triggers this function,
1698 ;; but if we don't match the "}" with an "\\s)", the
1699 ;; `c-syntactic-re-search-forward' at the end of the loop fails to
1700 ;; move forward over it, leaving point stuck at the "}".
1701 (while (and (not (looking-at "\\s)"))
1703 (if (eq (char-after) ?
&)
1704 (progn (setq mode ?
&)
1706 (c-forward-syntactic-ws))
1708 (if (c-on-identifier)
1710 (setq id-start
(point))
1712 (c-end-of-current-token)
1713 (setq id-end
(point))
1714 (c-forward-syntactic-ws)
1716 (setq declaration
(eq (char-after) ?
=))
1718 (forward-char) ; over "="
1719 (c-forward-syntactic-ws)
1720 (setq sub-begin
(point)))
1721 (if (or (and (< (point) limit
)
1722 (c-syntactic-re-search-forward "," limit t t
))
1723 (and (c-go-up-list-forward nil limit
)
1724 (eq (char-before) ?\
])))
1729 (setq sub-end
(point))
1730 (goto-char sub-begin
)
1731 (c-font-lock-c++-lambda-captures sub-end
)))
1733 (c-put-font-lock-face id-start id-end
1736 'font-lock-variable-name-face
)
1737 ((and capture-default
1738 (eq mode capture-default
))
1739 'font-lock-warning-face
)
1740 ((eq mode ?
=) font-lock-constant-face
)
1741 (t 'font-lock-variable-name-face
))))
1742 (c-syntactic-re-search-forward "," limit
'bound t
))
1744 (c-forward-syntactic-ws)
1745 (when (eq (char-after) ?
,)
1747 (c-forward-syntactic-ws)))
1749 (setq capture-default nil
)
1750 (if (< (point) limit
)
1751 (forward-char))))) ; over the terminating "]" or other close paren.
1755 (c-lang-defconst c-simple-decl-matchers
1756 "Simple font lock matchers for types and declarations. These are used
1757 on level 2 only and so aren't combined with `c-complex-decl-matchers'."
1759 t
`(;; Objective-C methods.
1760 ,@(when (c-major-mode-is 'objc-mode
)
1761 `((,(c-lang-const c-opt-method-key
)
1764 (let (;; The font-lock package in Emacs is known to clobber
1765 ;; `parse-sexp-lookup-properties' (when it exists).
1766 (parse-sexp-lookup-properties
1767 (cc-eval-when-compile
1768 (boundp 'parse-sexp-lookup-properties
))))
1770 (narrow-to-region (point-min) limit
)
1771 (c-font-lock-objc-method)))
1773 (goto-char (match-end 1))))))
1775 ;; Fontify all type names and the identifiers in the
1776 ;; declarations they might start. Use eval here since
1777 ;; `c-known-type-key' gets its value from
1778 ;; `*-font-lock-extra-types' on mode init.
1779 (eval .
(list ,(c-make-font-lock-search-function
1781 '(1 'font-lock-type-face t
)
1782 '((c-font-lock-declarators limit t nil nil
)
1784 (goto-char (match-end 1))
1785 (c-forward-syntactic-ws))
1786 (goto-char (match-end 1))))))
1788 ;; Fontify types preceded by `c-type-prefix-kwds' and the
1789 ;; identifiers in the declarations they might start.
1790 ,@(when (c-lang-const c-type-prefix-kwds
)
1791 (let* ((prefix-re (c-make-keywords-re nil
1792 (c-lang-const c-type-prefix-kwds
)))
1794 (regexp-opt-depth prefix-re
)
1795 (c-lang-const c-simple-ws-depth
))))
1796 `((,(c-make-font-lock-search-function
1797 (concat "\\<\\(" prefix-re
"\\)" ; 1
1798 (c-lang-const c-simple-ws
) "+"
1799 (concat "\\(" ; 2 + prefix-re + c-simple-ws
1800 (c-lang-const c-symbol-key
)
1803 'font-lock-type-face t
)
1804 `((c-font-lock-declarators limit t nil nil
)
1806 (goto-char (match-end ,type-match
))
1807 (c-forward-syntactic-ws))
1808 (goto-char (match-end ,type-match
))))))))
1810 ;; Fontify special declarations that lacks a type.
1811 ,@(when (c-lang-const c-typeless-decl-kwds
)
1812 `((,(c-make-font-lock-search-function
1814 (regexp-opt (c-lang-const c-typeless-decl-kwds
))
1816 '((c-font-lock-declarators limit t nil nil
)
1818 (goto-char (match-end 1))
1819 (c-forward-syntactic-ws))
1820 (goto-char (match-end 1)))))))
1822 ;; Fontify generic colon labels in languages that support them.
1823 ,@(when (c-lang-const c-recognize-colon-labels
)
1824 `(c-font-lock-labels))))
1826 (c-lang-defconst c-complex-decl-matchers
1827 "Complex font lock matchers for types and declarations. Used on level
1830 ;; Note: This code in this form dumps a number of functions into the
1831 ;; resulting constant, `c-matchers-3'. At run time, font lock will call
1832 ;; each of them as a "FUNCTION" (see Elisp page "Search-based
1833 ;; Fontification"). The font lock region is delimited by POINT and the
1834 ;; single parameter, LIMIT. Each of these functions returns NIL (thus
1835 ;; inhibiting spurious font-lock-keyword-face highlighting and another
1838 t
`(;; Initialize some things before the search functions below.
1839 c-font-lock-complex-decl-prepare
1841 ,@(if (c-major-mode-is 'objc-mode
)
1842 ;; Fontify method declarations in Objective-C, but first
1843 ;; we have to put the `c-decl-end' `c-type' property on
1844 ;; all the @-style directives that haven't been handled in
1845 ;; `c-basic-matchers-before'.
1846 `(,(c-make-font-lock-search-function
1847 (c-make-keywords-re t
1848 ;; Exclude "@class" since that directive ends with a
1849 ;; semicolon anyway.
1851 (append (c-lang-const c-protection-kwds
)
1852 (c-lang-const c-other-decl-kwds
)
1854 '((c-put-char-property (1- (match-end 1))
1855 'c-type
'c-decl-end
)))
1856 c-font-lock-objc-methods
))
1858 ;; Fontify declarators which have been cut off from their declaring
1859 ;; types at the start of the region.
1860 c-font-lock-cut-off-declarators
1862 ;; Fontify all declarations, casts and normal labels.
1863 c-font-lock-declarations
1865 ;; Fontify declarators when POINT is within their declaration.
1866 c-font-lock-enclosing-decls
1868 ;; Fontify angle bracket arglists like templates in C++.
1869 ,@(when (c-lang-const c-recognize-
<>-arglists
)
1870 `(c-font-lock-<>-arglists
))
1872 ,@(when (c-major-mode-is 'c
++-mode
)
1873 `(c-font-lock-c++-lambda-captures
))
1875 ;; The first two rules here mostly find occurrences that
1876 ;; `c-font-lock-declarations' has found already, but not
1877 ;; declarations containing blocks in the type (see note below).
1878 ;; It's also useful to fontify these everywhere to show e.g. when
1879 ;; a type keyword is accidentally used as an identifier.
1881 ;; Fontify basic types.
1882 ,(let ((re (c-make-keywords-re nil
1883 (c-lang-const c-primitive-type-kwds
))))
1884 (if (c-major-mode-is 'pike-mode
)
1885 ;; No symbol is a keyword after "->" in Pike.
1886 `(,(concat "\\(\\=.?\\|[^>]\\|[^-]>\\)"
1887 "\\<\\(" re
"\\)\\>")
1888 2 font-lock-type-face
)
1889 `(,(concat "\\<\\(" re
"\\)\\>")
1890 1 'font-lock-type-face
)))
1892 ;; Fontify types preceded by `c-type-prefix-kwds' (e.g. "struct").
1893 ,@(when (c-lang-const c-type-prefix-kwds
)
1896 (c-fontify-types-and-refs
1897 ((c-promote-possible-types t
)
1898 ;; The font-lock package in Emacs is known to clobber
1899 ;; `parse-sexp-lookup-properties' (when it exists).
1900 (parse-sexp-lookup-properties
1901 (cc-eval-when-compile
1902 (boundp 'parse-sexp-lookup-properties
))))
1904 ;; Narrow to avoid going past the limit in
1905 ;; `c-forward-type'.
1906 (narrow-to-region (point) limit
)
1907 (while (re-search-forward
1909 (c-make-keywords-re nil
1910 (c-lang-const c-type-prefix-kwds
))
1913 (unless (c-skip-comments-and-strings limit
)
1914 (c-forward-syntactic-ws)
1915 ;; Handle prefix declaration specifiers.
1918 (when (or (looking-at c-prefix-spec-kwds-re
)
1919 (and (c-major-mode-is 'java-mode
)
1920 (looking-at "@[A-Za-z0-9]+")))
1921 (c-forward-keyword-clause 1)
1923 (when (and c-opt-cpp-prefix
1925 c-noise-macro-with-parens-name-re
))
1926 (c-forward-noise-clause)
1928 ,(if (c-major-mode-is 'c
++-mode
)
1929 `(when (and (c-forward-type)
1930 (eq (char-after) ?
=))
1931 ;; In C++ we additionally check for a "class
1932 ;; X = Y" construct which is used in
1933 ;; templates, to fontify Y as a type.
1935 (c-forward-syntactic-ws)
1940 ;; Fontify symbols after closing braces as declaration
1941 ;; identifiers under the assumption that they are part of
1942 ;; declarations like "class Foo { ... } foo;". It's too
1943 ;; expensive to check this accurately by skipping past the
1944 ;; brace block, so we use the heuristic that it's such a
1945 ;; declaration if the first identifier is on the same line as
1946 ;; the closing brace. `c-font-lock-declarations' will later
1947 ;; override it if it turns out to be an new declaration, but
1948 ;; it will be wrong if it's an expression (see the test
1950 ;; ,@(when (c-lang-const c-opt-block-decls-with-vars-key)
1951 ;; `((,(c-make-font-lock-search-function
1953 ;; (c-lang-const c-single-line-syntactic-ws)
1954 ;; "\\(" ; 1 + c-single-line-syntactic-ws-depth
1955 ;; (c-lang-const c-type-decl-prefix-key)
1957 ;; (c-lang-const c-symbol-key)
1959 ;; `((c-font-lock-declarators limit t nil) ; That nil says use `font-lock-variable-name-face';
1960 ;; ; t would mean `font-lock-function-name-face'.
1962 ;; (c-put-char-property (match-beginning 0) 'c-type
1963 ;; 'c-decl-id-start)
1964 ;; ; 'c-decl-type-start)
1965 ;; (goto-char (match-beginning
1966 ;; ,(1+ (c-lang-const
1967 ;; c-single-line-syntactic-ws-depth)))))
1968 ;; (goto-char (match-end 0)))))))
1970 ;; Fontify the type in C++ "new" expressions.
1971 ,@(when (c-major-mode-is 'c
++-mode
)
1972 ;; This pattern is a probably a "(MATCHER . ANCHORED-HIGHLIGHTER)"
1973 ;; (see Elisp page "Search-based Fontification").
1975 (c-font-lock-c++-new
))))
1978 (defun c-font-lock-labels (limit)
1979 ;; Fontify all statement labels from the point to LIMIT. Assumes
1980 ;; that strings and comments have been fontified already. Nil is
1983 ;; Note: This function is only used on decoration level 2; this is
1984 ;; taken care of directly by the gargantuan
1985 ;; `c-font-lock-declarations' on higher levels.
1987 ;; This function might do hidden buffer changes.
1989 (let (continue-pos id-start
1990 ;; The font-lock package in Emacs is known to clobber
1991 ;; `parse-sexp-lookup-properties' (when it exists).
1992 (parse-sexp-lookup-properties
1993 (cc-eval-when-compile
1994 (boundp 'parse-sexp-lookup-properties
))))
1996 (while (re-search-forward ":[^:]" limit t
)
1997 (setq continue-pos
(point))
1998 (goto-char (match-beginning 0))
1999 (unless (c-skip-comments-and-strings limit
)
2001 (c-backward-syntactic-ws)
2002 (and (setq id-start
(c-on-identifier))
2004 (not (get-text-property id-start
'face
))
2007 (goto-char id-start
)
2008 (c-backward-syntactic-ws)
2010 ;; Check for a char that precedes a statement.
2011 (memq (char-before) '(?\
} ?\
{ ?\
;))
2012 ;; Check for a preceding label. We exploit the font
2013 ;; locking made earlier by this function.
2014 (and (eq (char-before) ?
:)
2017 (c-backward-syntactic-ws)
2019 (eq (get-text-property (1- (point)) 'face
)
2021 ;; Check for a keyword that precedes a statement.
2022 (c-after-conditional)))
2026 (goto-char id-start
)
2027 (looking-at c-symbol-key
)
2028 (c-put-font-lock-face (match-beginning 0) (match-end 0)
2029 c-label-face-name
)))
2031 (goto-char continue-pos
))))
2034 (c-lang-defconst c-basic-matchers-after
2035 "Font lock matchers for various things that should be fontified after
2036 generic casts and declarations are fontified. Used on level 2 and
2039 t
`(,@(when (c-lang-const c-brace-list-decl-kwds
)
2040 ;; Fontify the remaining identifiers inside an enum list when we start
2042 `(c-font-lock-enum-tail
2043 ;; Fontify the identifiers inside enum lists. (The enum type
2044 ;; name is handled by `c-simple-decl-matchers' or
2045 ;; `c-complex-decl-matchers' below.
2046 c-font-lock-enum-body
))
2048 ;; Fontify labels after goto etc.
2049 ,@(when (c-lang-const c-before-label-kwds
)
2050 `(;; (Got three different interpretation levels here,
2051 ;; which makes it a bit complicated: 1) The backquote
2052 ;; stuff is expanded when compiled or loaded, 2) the
2053 ;; eval form is evaluated at font-lock setup (to
2054 ;; substitute c-label-face-name correctly), and 3) the
2055 ;; resulting structure is interpreted during
2058 .
,(let* ((c-before-label-re
2059 (c-make-keywords-re nil
2060 (c-lang-const c-before-label-kwds
))))
2062 ,(concat "\\<\\(" c-before-label-re
"\\)\\>"
2064 "\\(" ; identifier-offset
2065 (c-lang-const c-symbol-key
)
2067 (list ,(+ (regexp-opt-depth c-before-label-re
) 2)
2068 c-label-face-name nil t
))))))
2070 ;; Fontify the clauses after various keywords.
2071 ,@(when (or (c-lang-const c-type-list-kwds
)
2072 (c-lang-const c-ref-list-kwds
)
2073 (c-lang-const c-colon-type-list-kwds
))
2074 `((,(c-make-font-lock-BO-decl-search-function
2076 (c-make-keywords-re nil
2077 (append (c-lang-const c-type-list-kwds
)
2078 (c-lang-const c-ref-list-kwds
)
2079 (c-lang-const c-colon-type-list-kwds
)))
2081 '((c-fontify-types-and-refs ((c-promote-possible-types t
))
2082 (c-forward-keyword-clause 1)
2083 (if (> (point) limit
) (goto-char limit
))))))))
2085 ,@(when (c-lang-const c-paren-type-kwds
)
2086 `((,(c-make-font-lock-search-function
2088 (c-make-keywords-re nil
2089 (c-lang-const c-paren-type-kwds
))
2091 '((c-fontify-types-and-refs ((c-promote-possible-types t
))
2092 (c-forward-keyword-clause 1)
2093 (if (> (point) limit
) (goto-char limit
))))))))
2095 ,@(when (c-major-mode-is 'java-mode
)
2096 `((eval .
(list "\\<\\(@[a-zA-Z0-9]+\\)\\>" 1 c-annotation-face
))))
2099 (c-lang-defconst c-matchers-1
2100 t
(c-lang-const c-cpp-matchers
))
2102 (c-lang-defconst c-matchers-2
2103 t
(append (c-lang-const c-matchers-1
)
2104 (c-lang-const c-basic-matchers-before
)
2105 (c-lang-const c-simple-decl-matchers
)
2106 (c-lang-const c-basic-matchers-after
)))
2108 (c-lang-defconst c-matchers-3
2109 t
(append (c-lang-const c-matchers-1
)
2110 (c-lang-const c-basic-matchers-before
)
2111 (c-lang-const c-complex-decl-matchers
)
2112 (c-lang-const c-basic-matchers-after
)))
2114 (defun c-compose-keywords-list (base-list)
2115 ;; Incorporate the font lock keyword lists according to
2116 ;; `c-doc-comment-style' on the given keyword list and return it.
2117 ;; This is used in the function bindings of the
2118 ;; `*-font-lock-keywords-*' symbols since we have to build the list
2119 ;; when font-lock is initialized.
2121 (unless (memq c-doc-face-name c-literal-faces
)
2122 (setq c-literal-faces
(cons c-doc-face-name c-literal-faces
)))
2124 (let* ((doc-keywords
2125 (if (consp (car-safe c-doc-comment-style
))
2126 (cdr-safe (or (assq c-buffer-is-cc-mode c-doc-comment-style
)
2127 (assq 'other c-doc-comment-style
)))
2128 c-doc-comment-style
))
2129 (list (nconc (c--mapcan
2132 (concat (symbol-name doc-style
)
2133 "-font-lock-keywords"))))
2134 (cond ((fboundp sym
)
2137 (append (eval sym
) nil
)))))
2138 (if (listp doc-keywords
)
2140 (list doc-keywords
)))
2143 ;; Kludge: If `c-font-lock-complex-decl-prepare' is on the list we
2144 ;; move it first since the doc comment font lockers might add
2145 ;; `c-type' text properties, so they have to be cleared before that.
2146 (when (memq 'c-font-lock-complex-decl-prepare list
)
2147 (setq list
(cons 'c-font-lock-complex-decl-prepare
2148 (delq 'c-font-lock-complex-decl-prepare
2149 (append list nil
)))))
2153 (defun c-override-default-keywords (def-var)
2154 ;; This is used to override the value on a `*-font-lock-keywords'
2155 ;; variable only if it's nil or has the same value as one of the
2156 ;; `*-font-lock-keywords-*' variables. Older font-lock packages
2157 ;; define a default value for `*-font-lock-keywords' which we want
2158 ;; to override, but we should otoh avoid clobbering a user setting.
2159 ;; This heuristic for that isn't perfect, but I can't think of any
2161 (when (and (boundp def-var
)
2162 (memq (symbol-value def-var
)
2166 (let ((sym (intern (concat (symbol-name def-var
)
2168 (and (boundp sym
) (symbol-value sym
))))
2169 '("-1" "-2" "-3")))))
2170 ;; The overriding is done by unbinding the variable so that the normal
2171 ;; defvar will install its default value later on.
2172 (makunbound def-var
)))
2177 (c-override-default-keywords 'c-font-lock-keywords
)
2179 (defconst c-font-lock-keywords-1
(c-lang-const c-matchers-1 c
)
2180 "Minimal font locking for C mode.
2181 Fontifies only preprocessor directives (in addition to the syntactic
2182 fontification of strings and comments).")
2184 (defconst c-font-lock-keywords-2
(c-lang-const c-matchers-2 c
)
2185 "Fast normal font locking for C mode.
2186 In addition to `c-font-lock-keywords-1', this adds fontification of
2187 keywords, simple types, declarations that are easy to recognize, the
2188 user defined types on `c-font-lock-extra-types', and the doc comment
2189 styles specified by `c-doc-comment-style'.")
2191 (defconst c-font-lock-keywords-3
(c-lang-const c-matchers-3 c
)
2192 "Accurate normal font locking for C mode.
2193 Like the variable `c-font-lock-keywords-2' but detects declarations in a more
2194 accurate way that works in most cases for arbitrary types without the
2195 need for `c-font-lock-extra-types'.")
2197 (defvar c-font-lock-keywords c-font-lock-keywords-3
2198 "Default expressions to highlight in C mode.")
2200 (defun c-font-lock-keywords-2 ()
2201 (c-compose-keywords-list c-font-lock-keywords-2
))
2202 (defun c-font-lock-keywords-3 ()
2203 (c-compose-keywords-list c-font-lock-keywords-3
))
2204 (defun c-font-lock-keywords ()
2205 (c-compose-keywords-list c-font-lock-keywords
))
2210 (defun c-font-lock-c++-new
(limit)
2211 ;; FIXME!!! Put in a comment about the context of this function's
2212 ;; invocation. I think it's called as an ANCHORED-MATCHER within an
2213 ;; ANCHORED-HIGHLIGHTER. (2007/2/10).
2215 ;; Assuming point is after a "new" word, check that it isn't inside
2216 ;; a string or comment, and if so try to fontify the type in the
2217 ;; allocation expression. Nil is always returned.
2219 ;; As usual, C++ takes the prize in coming up with a hard to parse
2222 ;; This function might do hidden buffer changes.
2224 (unless (c-skip-comments-and-strings limit
)
2227 ;; A "new" keyword is followed by one to three expressions, where
2228 ;; the type is the middle one, and the only required part.
2229 (let (expr1-pos expr2-pos
2230 ;; Enable recording of identifier ranges in `c-forward-type'
2231 ;; etc for later fontification. Not using
2232 ;; `c-fontify-types-and-refs' here since the ranges should
2233 ;; be fontified selectively only when an allocation
2234 ;; expression is successfully recognized.
2235 (c-record-type-identifiers t
)
2236 c-record-ref-identifiers
2237 ;; The font-lock package in Emacs is known to clobber
2238 ;; `parse-sexp-lookup-properties' (when it exists).
2239 (parse-sexp-lookup-properties
2240 (cc-eval-when-compile
2241 (boundp 'parse-sexp-lookup-properties
))))
2242 (c-forward-syntactic-ws)
2244 ;; The first placement arglist is always parenthesized, if it
2246 (when (eq (char-after) ?\
()
2247 (setq expr1-pos
(1+ (point)))
2250 (scan-error (throw 'false-alarm t
)))
2251 (c-forward-syntactic-ws))
2253 ;; The second expression is either a type followed by some "*" or
2254 ;; "[...]" or similar, or a parenthesized type followed by a full
2255 ;; identifierless declarator.
2256 (setq expr2-pos
(1+ (point)))
2257 (cond ((eq (char-after) ?\
())
2258 ((let ((c-promote-possible-types t
))
2260 (t (setq expr2-pos nil
)))
2265 ;; No second expression, so the first has to be a
2266 ;; parenthesized type.
2267 (goto-char expr1-pos
)
2268 (let ((c-promote-possible-types t
))
2271 ((eq (char-before expr2-pos
) ?\
()
2272 ;; Got two parenthesized expressions, so we have to look
2273 ;; closer at them to decide which is the type. No need to
2274 ;; handle `c-record-ref-identifiers' since all references
2275 ;; have already been handled by other fontification rules.
2276 (let (expr1-res expr2-res
)
2278 (goto-char expr1-pos
)
2279 (when (setq expr1-res
(c-forward-type))
2281 (cc-eval-when-compile
2282 (concat (c-lang-const c-symbol-start c
++)
2284 ;; There's something after the would-be type that
2285 ;; can't be there, so this is a placement arglist.
2286 (setq expr1-res nil
)))
2288 (goto-char expr2-pos
)
2289 (when (setq expr2-res
(c-forward-type))
2291 (cc-eval-when-compile
2292 (concat (c-lang-const c-symbol-start c
++)
2294 ;; There's something after the would-be type that can't
2295 ;; be there, so this is an initialization expression.
2296 (setq expr2-res nil
))
2297 (when (and (c-go-up-list-forward)
2298 (progn (c-forward-syntactic-ws)
2299 (eq (char-after) ?\
()))
2300 ;; If there's a third initialization expression
2301 ;; then the second one is the type, so demote the
2303 (setq expr1-res nil
)))
2305 ;; We fontify the most likely type, with a preference for
2306 ;; the first argument since a placement arglist is more
2307 ;; unusual than an initializer.
2308 (cond ((memq expr1-res
'(t known prefix
)))
2309 ((memq expr2-res
'(t known prefix
)))
2310 ;; Presumably 'decltype's will be fontified elsewhere.
2311 ((eq expr1-res
'decltype
))
2312 ((eq expr2-res
'decltype
))
2313 ((eq expr1-res
'found
)
2314 (let ((c-promote-possible-types t
))
2315 (goto-char expr1-pos
)
2317 ((eq expr2-res
'found
)
2318 (let ((c-promote-possible-types t
))
2319 (goto-char expr2-pos
)
2321 ((and (eq expr1-res
'maybe
) (not expr2-res
))
2322 (let ((c-promote-possible-types t
))
2323 (goto-char expr1-pos
)
2325 ((and (not expr1-res
) (eq expr2-res
'maybe
))
2326 (let ((c-promote-possible-types t
))
2327 (goto-char expr2-pos
)
2329 ;; If both type matches are 'maybe then we're
2330 ;; too uncertain to promote either of them.
2333 ;; Fontify the type that now is recorded in
2334 ;; `c-record-type-identifiers', if any.
2335 (c-fontify-recorded-types-and-refs)))))
2338 (c-override-default-keywords 'c
++-font-lock-keywords
)
2340 (defconst c
++-font-lock-keywords-1
(c-lang-const c-matchers-1 c
++)
2341 "Minimal font locking for C++ mode.
2342 Fontifies only preprocessor directives (in addition to the syntactic
2343 fontification of strings and comments).")
2345 (defconst c
++-font-lock-keywords-2
(c-lang-const c-matchers-2 c
++)
2346 "Fast normal font locking for C++ mode.
2347 In addition to `c++-font-lock-keywords-1', this adds fontification of
2348 keywords, simple types, declarations that are easy to recognize, the
2349 user defined types on `c++-font-lock-extra-types', and the doc comment
2350 styles specified by `c-doc-comment-style'.")
2352 (defconst c
++-font-lock-keywords-3
(c-lang-const c-matchers-3 c
++)
2353 "Accurate normal font locking for C++ mode.
2354 Like the variable `c++-font-lock-keywords-2' but detects declarations in a more
2355 accurate way that works in most cases for arbitrary types without the
2356 need for `c++-font-lock-extra-types'.")
2358 (defvar c
++-font-lock-keywords c
++-font-lock-keywords-3
2359 "Default expressions to highlight in C++ mode.")
2361 (defun c++-font-lock-keywords-2
()
2362 (c-compose-keywords-list c
++-font-lock-keywords-2
))
2363 (defun c++-font-lock-keywords-3
()
2364 (c-compose-keywords-list c
++-font-lock-keywords-3
))
2365 (defun c++-font-lock-keywords
()
2366 (c-compose-keywords-list c
++-font-lock-keywords
))
2371 (defun c-font-lock-objc-method ()
2372 ;; Assuming the point is after the + or - that starts an Objective-C
2373 ;; method declaration, fontify it. This must be done before normal
2374 ;; casts, declarations and labels are fontified since they will get
2375 ;; false matches in these things.
2377 ;; This function might do hidden buffer changes.
2379 (c-fontify-types-and-refs
2381 (c-promote-possible-types t
))
2385 (c-forward-syntactic-ws)
2387 ;; An optional method type.
2388 (if (eq (char-after) ?\
()
2391 (c-forward-syntactic-ws)
2393 (prog1 (c-go-up-list-forward)
2394 (c-forward-syntactic-ws)))
2397 ;; The name. The first time it's the first part of
2398 ;; the function name, the rest of the time it's an
2400 (looking-at c-symbol-key
)
2402 (goto-char (match-end 0))
2403 (c-put-font-lock-face (match-beginning 0)
2406 'font-lock-function-name-face
2407 'font-lock-variable-name-face
))
2408 (c-forward-syntactic-ws)
2410 ;; Another optional part of the function name.
2411 (when (looking-at c-symbol-key
)
2412 (goto-char (match-end 0))
2413 (c-put-font-lock-face (match-beginning 0)
2415 'font-lock-function-name-face
)
2416 (c-forward-syntactic-ws))
2418 ;; There's another argument if a colon follows.
2419 (eq (char-after) ?
:)))
2423 (defun c-font-lock-objc-methods (limit)
2424 ;; Fontify method declarations in Objective-C. Nil is always
2427 ;; This function might do hidden buffer changes.
2429 (let (;; The font-lock package in Emacs is known to clobber
2430 ;; `parse-sexp-lookup-properties' (when it exists).
2431 (parse-sexp-lookup-properties
2432 (cc-eval-when-compile
2433 (boundp 'parse-sexp-lookup-properties
))))
2439 (lambda (match-pos inside-macro
&optional top-level
)
2441 (c-font-lock-objc-method))))
2444 (c-override-default-keywords 'objc-font-lock-keywords
)
2446 (defconst objc-font-lock-keywords-1
(c-lang-const c-matchers-1 objc
)
2447 "Minimal font locking for Objective-C mode.
2448 Fontifies only compiler directives (in addition to the syntactic
2449 fontification of strings and comments).")
2451 (defconst objc-font-lock-keywords-2
(c-lang-const c-matchers-2 objc
)
2452 "Fast normal font locking for Objective-C mode.
2453 In addition to `objc-font-lock-keywords-1', this adds fontification of
2454 keywords, simple types, declarations that are easy to recognize, the
2455 user defined types on `objc-font-lock-extra-types', and the doc
2456 comment styles specified by `c-doc-comment-style'.")
2458 (defconst objc-font-lock-keywords-3
(c-lang-const c-matchers-3 objc
)
2459 "Accurate normal font locking for Objective-C mode.
2460 Like the variable `objc-font-lock-keywords-2' but detects declarations in a more
2461 accurate way that works in most cases for arbitrary types without the
2462 need for `objc-font-lock-extra-types'.")
2464 (defvar objc-font-lock-keywords objc-font-lock-keywords-3
2465 "Default expressions to highlight in Objective-C mode.")
2467 (defun objc-font-lock-keywords-2 ()
2468 (c-compose-keywords-list objc-font-lock-keywords-2
))
2469 (defun objc-font-lock-keywords-3 ()
2470 (c-compose-keywords-list objc-font-lock-keywords-3
))
2471 (defun objc-font-lock-keywords ()
2472 (c-compose-keywords-list objc-font-lock-keywords
))
2474 ;; Kludge to override the default value that
2475 ;; `objc-font-lock-extra-types' might have gotten from the font-lock
2476 ;; package. The value replaced here isn't relevant now anyway since
2477 ;; those types are builtin and therefore listed directly in
2478 ;; `c-primitive-type-kwds'.
2479 (when (equal (sort (append objc-font-lock-extra-types nil
) 'string-lessp
)
2480 '("BOOL" "Class" "IMP" "SEL"))
2481 (setq objc-font-lock-extra-types
2482 (cc-eval-when-compile (list (concat "[" c-upper
"]\\sw*")))))
2487 (c-override-default-keywords 'java-font-lock-keywords
)
2489 (defconst java-font-lock-keywords-1
(c-lang-const c-matchers-1 java
)
2490 "Minimal font locking for Java mode.
2491 Fontifies nothing except the syntactic fontification of strings and
2494 (defconst java-font-lock-keywords-2
(c-lang-const c-matchers-2 java
)
2495 "Fast normal font locking for Java mode.
2496 In addition to `java-font-lock-keywords-1', this adds fontification of
2497 keywords, simple types, declarations that are easy to recognize, the
2498 user defined types on `java-font-lock-extra-types', and the doc
2499 comment styles specified by `c-doc-comment-style'.")
2501 (defconst java-font-lock-keywords-3
(c-lang-const c-matchers-3 java
)
2502 "Accurate normal font locking for Java mode.
2503 Like variable `java-font-lock-keywords-2' but detects declarations in a more
2504 accurate way that works in most cases for arbitrary types without the
2505 need for `java-font-lock-extra-types'.")
2507 (defvar java-font-lock-keywords java-font-lock-keywords-3
2508 "Default expressions to highlight in Java mode.")
2510 (defun java-font-lock-keywords-2 ()
2511 (c-compose-keywords-list java-font-lock-keywords-2
))
2512 (defun java-font-lock-keywords-3 ()
2513 (c-compose-keywords-list java-font-lock-keywords-3
))
2514 (defun java-font-lock-keywords ()
2515 (c-compose-keywords-list java-font-lock-keywords
))
2520 (c-override-default-keywords 'idl-font-lock-keywords
)
2522 (defconst idl-font-lock-keywords-1
(c-lang-const c-matchers-1 idl
)
2523 "Minimal font locking for CORBA IDL mode.
2524 Fontifies nothing except the syntactic fontification of strings and
2527 (defconst idl-font-lock-keywords-2
(c-lang-const c-matchers-2 idl
)
2528 "Fast normal font locking for CORBA IDL mode.
2529 In addition to `idl-font-lock-keywords-1', this adds fontification of
2530 keywords, simple types, declarations that are easy to recognize, the
2531 user defined types on `idl-font-lock-extra-types', and the doc comment
2532 styles specified by `c-doc-comment-style'.")
2534 (defconst idl-font-lock-keywords-3
(c-lang-const c-matchers-3 idl
)
2535 "Accurate normal font locking for CORBA IDL mode.
2536 Like the variable `idl-font-lock-keywords-2' but detects declarations in a more
2537 accurate way that works in most cases for arbitrary types without the
2538 need for `idl-font-lock-extra-types'.")
2540 (defvar idl-font-lock-keywords idl-font-lock-keywords-3
2541 "Default expressions to highlight in CORBA IDL mode.")
2543 (defun idl-font-lock-keywords-2 ()
2544 (c-compose-keywords-list idl-font-lock-keywords-2
))
2545 (defun idl-font-lock-keywords-3 ()
2546 (c-compose-keywords-list idl-font-lock-keywords-3
))
2547 (defun idl-font-lock-keywords ()
2548 (c-compose-keywords-list idl-font-lock-keywords
))
2553 (c-override-default-keywords 'pike-font-lock-keywords
)
2555 (defconst pike-font-lock-keywords-1
(c-lang-const c-matchers-1 pike
)
2556 "Minimal font locking for Pike mode.
2557 Fontifies only preprocessor directives (in addition to the syntactic
2558 fontification of strings and comments).")
2560 (defconst pike-font-lock-keywords-2
(c-lang-const c-matchers-2 pike
)
2561 "Fast normal font locking for Pike mode.
2562 In addition to `pike-font-lock-keywords-1', this adds fontification of
2563 keywords, simple types, declarations that are easy to recognize, the
2564 user defined types on `pike-font-lock-extra-types', and the doc
2565 comment styles specified by `c-doc-comment-style'.")
2567 (defconst pike-font-lock-keywords-3
(c-lang-const c-matchers-3 pike
)
2568 "Accurate normal font locking for Pike mode.
2569 Like the variable `pike-font-lock-keywords-2' but detects declarations in a more
2570 accurate way that works in most cases for arbitrary types without the
2571 need for `pike-font-lock-extra-types'.")
2573 (defvar pike-font-lock-keywords pike-font-lock-keywords-3
2574 "Default expressions to highlight in Pike mode.")
2576 (defun pike-font-lock-keywords-2 ()
2577 (c-compose-keywords-list pike-font-lock-keywords-2
))
2578 (defun pike-font-lock-keywords-3 ()
2579 (c-compose-keywords-list pike-font-lock-keywords-3
))
2580 (defun pike-font-lock-keywords ()
2581 (c-compose-keywords-list pike-font-lock-keywords
))
2586 (defun c-font-lock-doc-comments (prefix limit keywords
)
2587 ;; Fontify the comments between the point and LIMIT whose start
2588 ;; matches PREFIX with `c-doc-face-name'. Assumes comments have been
2589 ;; fontified with `font-lock-comment-face' already. nil is always
2592 ;; After the fontification of a matching comment, fontification
2593 ;; according to KEYWORDS is applied inside it. It's a list like
2594 ;; `font-lock-keywords' except that anchored matches and eval
2595 ;; clauses aren't supported and that some abbreviated forms can't be
2596 ;; used. The buffer is narrowed to the comment while KEYWORDS is
2597 ;; applied; leading comment starters are included but trailing
2598 ;; comment enders for block comment are not.
2600 ;; Note that faces added through KEYWORDS should never replace the
2601 ;; existing `c-doc-face-name' face since the existence of that face
2602 ;; is used as a flag in other code to skip comments.
2604 ;; This function might do hidden buffer changes.
2606 (let (comment-beg region-beg
)
2607 (if (eq (get-text-property (point) 'face
)
2608 'font-lock-comment-face
)
2609 ;; Handle the case when the fontified region starts inside a
2611 (let ((start (c-literal-start)))
2612 (setq region-beg
(point))
2615 (when (looking-at prefix
)
2616 (setq comment-beg
(point)))))
2621 ;; Search for the prefix until a match is found at the start
2623 (while (when (re-search-forward prefix limit t
)
2624 (setq comment-beg
(match-beginning 0))
2625 (or (not (c-got-face-at comment-beg
2627 (and (/= comment-beg
(point-min))
2628 (c-got-face-at (1- comment-beg
)
2630 (setq comment-beg nil
))
2631 (setq region-beg comment-beg
))
2633 (if (elt (parse-partial-sexp comment-beg
(+ comment-beg
2)) 7)
2634 ;; Collect a sequence of doc style line comments.
2636 (goto-char comment-beg
)
2638 (c-forward-single-comment)
2639 (skip-syntax-forward " ")
2641 (looking-at prefix
))))
2642 (goto-char comment-beg
)
2643 (c-forward-single-comment))
2644 (if (> (point) limit
) (goto-char limit
))
2645 (setq comment-beg nil
)
2647 (let ((region-end (point))
2648 (keylist keywords
) keyword matcher highlights
)
2649 (c-put-font-lock-face region-beg region-end c-doc-face-name
)
2651 ;; Narrow to the doc comment. Among other things, this
2652 ;; helps by making "^" match at the start of the comment.
2653 ;; Do not include a trailing block comment ender, though.
2654 (and (> region-end
(1+ region-beg
))
2655 (progn (goto-char region-end
)
2657 (looking-at "\\*/"))
2658 (setq region-end
(point)))
2659 (narrow-to-region region-beg region-end
)
2662 (setq keyword
(car keylist
)
2663 keylist
(cdr keylist
)
2664 matcher
(car keyword
))
2665 (goto-char region-beg
)
2666 (while (if (stringp matcher
)
2667 (re-search-forward matcher region-end t
)
2668 (funcall matcher region-end
))
2669 (setq highlights
(cdr keyword
))
2670 (if (consp (car highlights
))
2672 (font-lock-apply-highlight (car highlights
))
2673 (setq highlights
(cdr highlights
)))
2674 (font-lock-apply-highlight highlights
))))
2676 (goto-char region-end
)))))
2678 (put 'c-font-lock-doc-comments
'lisp-indent-function
2)
2680 (defun c-find-invalid-doc-markup (regexp limit
)
2681 ;; Used to fontify invalid markup in doc comments after the correct
2682 ;; ones have been fontified: Find the first occurrence of REGEXP
2683 ;; between the point and LIMIT that only is fontified with
2684 ;; `c-doc-face-name'. If a match is found then submatch 0 surrounds
2685 ;; the first char and t is returned, otherwise nil is returned.
2687 ;; This function might do hidden buffer changes.
2689 (while (if (re-search-forward regexp limit t
)
2690 (not (eq (get-text-property
2691 (setq start
(match-beginning 0)) 'face
)
2695 (store-match-data (list (copy-marker start
)
2696 (copy-marker (1+ start
))))
2699 ;; GtkDoc patterns contributed by Masatake YAMATO <jet@gyve.org>.
2701 (defconst gtkdoc-font-lock-doc-comments
2702 (let ((symbol "[a-zA-Z0-9_]+")
2704 `((,(concat header
"\\(" symbol
"\\):[ \t]*$")
2705 1 ,c-doc-markup-face-name prepend nil
)
2706 (,(concat symbol
"()")
2707 0 ,c-doc-markup-face-name prepend nil
)
2708 (,(concat header
"\\(" "@" symbol
"\\):")
2709 1 ,c-doc-markup-face-name prepend nil
)
2710 (,(concat "[#%@]" symbol
)
2711 0 ,c-doc-markup-face-name prepend nil
))
2714 (defconst gtkdoc-font-lock-doc-protection
2715 `(("< \\(public\\|private\\|protected\\) >"
2716 1 ,c-doc-markup-face-name prepend nil
)))
2718 (defconst gtkdoc-font-lock-keywords
2720 (c-font-lock-doc-comments "/\\*\\*$" limit
2721 gtkdoc-font-lock-doc-comments
)
2722 (c-font-lock-doc-comments "/\\*< " limit
2723 gtkdoc-font-lock-doc-protection
)
2728 (defconst javadoc-font-lock-doc-comments
2729 `(("{@[a-z]+[^}\n\r]*}" ; "{@foo ...}" markup.
2730 0 ,c-doc-markup-face-name prepend nil
)
2731 ("^\\(/\\*\\)?\\(\\s \\|\\*\\)*\\(@[a-z]+\\)" ; "@foo ..." markup.
2732 3 ,c-doc-markup-face-name prepend nil
)
2733 (,(concat "</?\\sw" ; HTML tags.
2735 (concat "\\sw\\|\\s \\|[=\n\r*.:]\\|"
2736 "\"[^\"]*\"\\|'[^']*'")
2738 0 ,c-doc-markup-face-name prepend nil
)
2739 ("&\\(\\sw\\|[.:]\\)+;" ; HTML entities.
2740 0 ,c-doc-markup-face-name prepend nil
)
2741 ;; Fontify remaining markup characters as invalid. Note
2742 ;; that the Javadoc spec is hazy about when "@" is
2743 ;; allowed in non-markup use.
2745 (c-find-invalid-doc-markup "[<>&]\\|{@" limit
))
2746 0 'font-lock-warning-face prepend nil
)))
2748 (defconst javadoc-font-lock-keywords
2750 (c-font-lock-doc-comments "/\\*\\*" limit
2751 javadoc-font-lock-doc-comments
)))))
2755 (defconst autodoc-decl-keywords
2756 ;; Adorned regexp matching the keywords that introduce declarations
2758 (cc-eval-when-compile
2759 (c-make-keywords-re t
'("@decl" "@elem" "@index" "@member") 'pike-mode
)))
2761 (defconst autodoc-decl-type-keywords
2762 ;; Adorned regexp matching the keywords that are followed by a type.
2763 (cc-eval-when-compile
2764 (c-make-keywords-re t
'("@elem" "@member") 'pike-mode
)))
2766 (defun autodoc-font-lock-line-markup (limit)
2767 ;; Fontify all line oriented keywords between the point and LIMIT.
2768 ;; Nil is always returned.
2770 ;; This function might do hidden buffer changes.
2772 (let ((line-re (concat "^\\(\\(/\\*!\\|\\s *\\("
2773 c-current-comment-prefix
2774 "\\)\\)\\s *\\)@[A-Za-z_-]+\\(\\s \\|$\\)"))
2775 (markup-faces (list c-doc-markup-face-name c-doc-face-name
)))
2777 (while (re-search-forward line-re limit t
)
2778 (goto-char (match-end 1))
2780 (if (looking-at autodoc-decl-keywords
)
2781 (let* ((kwd-pos (point))
2782 (start (match-end 1))
2786 (c-put-font-lock-face (point) pos markup-faces
)
2788 ;; Put a declaration end mark at the markup keyword and
2789 ;; remove the faces from the rest of the line so that it
2790 ;; gets refontified as a declaration later on by
2791 ;; `c-font-lock-declarations'.
2792 (c-put-char-property (1- pos
) 'c-type
'c-decl-end
)
2797 (and (eq (char-before) ?
@)
2799 (progn (forward-char)
2800 (skip-syntax-forward " ")
2801 (looking-at c-current-comment-prefix
))))
2802 (goto-char (match-end 0))
2803 (c-remove-font-lock-face pos
(1- end
))
2804 (c-put-font-lock-face (1- end
) end markup-faces
)
2807 ;; Include the final newline in the removed area. This
2808 ;; has no visual effect but it avoids some tricky special
2809 ;; cases in the testsuite wrt the differences in string
2810 ;; fontification in Emacs vs XEmacs.
2811 (c-remove-font-lock-face pos
(min (1+ (point)) (point-max)))
2813 ;; Must handle string literals explicitly inside the declaration.
2815 (while (re-search-forward
2816 "\"\\([^\\\"]\\|\\\\.\\)*\"\\|'\\([^\\']\\|\\\\.\\)*'"
2818 (c-put-font-lock-string-face (match-beginning 0)
2821 ;; Fontify types after keywords that always are followed
2824 (when (looking-at autodoc-decl-type-keywords
)
2825 (c-fontify-types-and-refs ((c-promote-possible-types t
))
2827 (c-forward-syntactic-ws)
2830 ;; Mark each whole line as markup, as long as the logical line
2833 (c-put-font-lock-face (point)
2834 (progn (end-of-line) (point))
2836 (and (eq (char-before) ?
@)
2838 (progn (forward-char)
2839 (skip-syntax-forward " ")
2840 (looking-at c-current-comment-prefix
))))
2841 (goto-char (match-end 0))))))
2845 (defconst autodoc-font-lock-doc-comments
2846 `(("@\\(\\w+{\\|\\[\\([^]@\n\r]\\|@@\\)*\\]\\|[@}]\\|$\\)"
2848 0 ,c-doc-markup-face-name prepend nil
)
2849 (autodoc-font-lock-line-markup)
2850 ;; Fontify remaining markup characters as invalid.
2852 (c-find-invalid-doc-markup "@" limit
))
2853 0 'font-lock-warning-face prepend nil
)
2856 (defun autodoc-font-lock-keywords ()
2857 ;; Note that we depend on that `c-current-comment-prefix' has got
2858 ;; its proper value here.
2860 ;; This function might do hidden buffer changes.
2862 ;; The `c-type' text property with `c-decl-end' is used to mark the
2863 ;; end of the `autodoc-decl-keywords' occurrences to fontify the
2864 ;; following declarations.
2865 (setq c-type-decl-end-used t
)
2868 (c-font-lock-doc-comments "/[*/]!" limit
2869 autodoc-font-lock-doc-comments
)))))
2872 ;; 2006-07-10: awk-font-lock-keywords has been moved back to cc-awk.el.
2873 (cc-provide 'cc-fonts
)
2876 ;; indent-tabs-mode: t
2879 ;;; cc-fonts.el ends here