cc-mode / cc-fonts.el

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;;; cc-fonts.el --- font lock support for CC Mode

;; Copyright (C) 2002, 03 Free Software Foundation, Inc.

;; Authors:    2003- Alan Mackenzie
;;             2002- Martin Stjernholm
;; Maintainer: bug-cc-mode@gnu.org
;; Created:    07-Jan-2002
;; Version:    See cc-mode.el
;; Keywords:   c languages oop

;; This file is part of GNU Emacs.

;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with this program; see the file COPYING.  If not, write to
;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;;; Commentary:

;; Some comments on the use of faces:
;;
;; o  `c-label-face-name' is either `font-lock-constant-face' (in Emacs
;;    20 and later), or `font-lock-reference-face'.
;;
;; o  `c-constant-face-name', `c-reference-face-name' and
;;    `c-doc-markup-face-name' are essentially set up like
;;    `c-label-face-name'.
;;
;; o  `c-preprocessor-face-name' is `font-lock-preprocessor-face' in
;;    XEmacs and - in lack of a closer equivalent -
;;    `font-lock-builtin-face' or `font-lock-reference-face' in Emacs.
;;
;; o  `c-doc-face-name' is `font-lock-doc-string-face' in XEmacs,
;;    `font-lock-doc-face' in Emacs 21 and later, or
;;    `font-lock-comment-face' in older Emacs (that since source
;;    documentation are actually comments in these languages, as opposed
;;    to elisp).
;;
;; o  `c-invalid-face-name' is `font-lock-warning-face' in Emacs.  In
;;    older XEmacs there's no corresponding standard face, so there
;;    it's mapped to a special `c-invalid-face'.
;;
;; TBD: We should probably provide real faces for the above uses and
;; instead initialize them from the standard faces.

;;; Code:

;; The faces that already have been put onto the text is tested in
;; various places to direct further fontifications.  For this to work,
;; the following assumptions regarding the faces must hold (apart from
;; the dependencies on the font locking order):
;;
;; o  `font-lock-comment-face' and the face in `c-doc-face-name' is
;;    not used in anything but comments.
;; o  If any face (e.g. `c-doc-markup-face-name') but those above is
;;    used in comments, it doesn't replace them.
;; o  `font-lock-string-face' is not used in anything but string
;;    literals (single or double quoted).
;; o  `font-lock-keyword-face' and the face in `c-label-face-name' are
;;    never overlaid with other faces.

(eval-when-compile
  (let ((load-path
	 (if (and (boundp 'byte-compile-dest-file)
		  (stringp byte-compile-dest-file))
	     (cons (file-name-directory byte-compile-dest-file) load-path)
	   load-path)))
    (load "cc-bytecomp" nil t)))

(cc-require 'cc-defs)
(cc-require-when-compile 'cc-langs)
(cc-require 'cc-vars)
(cc-require 'cc-engine)
(cc-require-when-compile 'cc-awk) ; Change from cc-require, 2003/6/18 to
;; prevent cc-awk being loaded when it's not needed.  There is now a (require
;; 'cc-awk) in (defun awk-mode ..).

;; Avoid repeated loading through the eval-after-load directive in
;; cc-mode.el.
(provide 'cc-fonts)

(cc-external-require 'font-lock)

(cc-bytecomp-defvar parse-sexp-lookup-properties) ; Emacs only.

;; Need to declare these local symbols during compilation since
;; they're referenced from lambdas in `byte-compile' calls that are
;; executed at compile time.  They don't need to have the proper
;; definitions, though, since the generated functions aren't called
;; during compilation.
(cc-bytecomp-defvar c-preprocessor-face-name)
(cc-bytecomp-defvar c-reference-face-name)
(cc-bytecomp-defun c-fontify-recorded-types-and-refs)
(cc-bytecomp-defun c-font-lock-declarators)
(cc-bytecomp-defun c-font-lock-objc-iip-decl)
(cc-bytecomp-defun c-font-lock-objc-method)
(cc-bytecomp-defun c-font-lock-invalid-string)

;; Emacs 19 doesn't have `defface'.  This "replacement" leaves a lot
;; to be wished for but at least it avoids any errors.
(cc-eval-when-compile
  (or (fboundp 'defface)
      (cc-bytecomp-defmacro defface (face spec doc &rest args)
	`(make-face ',face))))


;; Note that font-lock in XEmacs doesn't expand face names as
;; variables, so we have to use the (eval . FORM) in the font lock
;; matchers wherever we use these alias variables.

(defconst c-preprocessor-face-name
  (cond ((c-face-name-p 'font-lock-preprocessor-face)
	 ;; XEmacs has a font-lock-preprocessor-face.
	 'font-lock-preprocessor-face)
	((c-face-name-p 'font-lock-builtin-face)
	 ;; In Emacs 20 and later font-lock-builtin-face has
	 ;; traditionally been used for preprocessor directives.
	 'font-lock-builtin-face)
	(t
	 'font-lock-reference-face)))

(cc-bytecomp-defvar font-lock-constant-face)

(defconst c-label-face-name
  (cond ((c-face-name-p 'font-lock-label-face)
	 ;; If it happens to occur in the future.  (Well, the more
	 ;; pragmatic reason is to get unique faces for the test
	 ;; suite.)
	 'font-lock-label-face)
	((and (c-face-name-p 'font-lock-constant-face)
	      (eq font-lock-constant-face 'font-lock-constant-face))
	 ;; Test both if font-lock-constant-face exists and that it's
	 ;; not an alias for something else.  This is important since
	 ;; we compare already set faces in various places.
	 'font-lock-constant-face)
	(t
	 'font-lock-reference-face)))

(defconst c-constant-face-name
  (if (and (c-face-name-p 'font-lock-constant-face)
	   (eq font-lock-constant-face 'font-lock-constant-face))
      ;; This doesn't exist in XEmacs <= 20 and some earlier versions
      ;; of XEmacs 21.
      'font-lock-constant-face
    c-label-face-name))

(defconst c-reference-face-name
  (if (and (c-face-name-p 'font-lock-reference-face)
	   (eq font-lock-reference-face 'font-lock-reference-face))
      ;; This is considered obsolete in Emacs 20 and later, but it
      ;; still maps well to this use.  (Another reason to do this is
      ;; to get unique faces for the test suite.)
      'font-lock-reference-face
    c-label-face-name))

;; This should not mapped to a face that also is used to fontify things
;; that aren't comments or string literals.
(defconst c-doc-face-name
  (cond ((c-face-name-p 'font-lock-doc-string-face)
	 ;; XEmacs.
	 'font-lock-doc-string-face)
	((c-face-name-p 'font-lock-doc-face)
	 ;; Emacs 21 and later.
	 'font-lock-doc-face)
	(t
	 'font-lock-comment-face)))

(defconst c-doc-markup-face-name
  (if (c-face-name-p 'font-lock-doc-markup-face)
	 ;; If it happens to occur in the future.  (Well, the more
	 ;; pragmatic reason is to get unique faces for the test
	 ;; suite.)
	 'font-lock-doc-markup-face
    c-label-face-name))

(defconst c-invalid-face-name
  (if (c-face-name-p 'font-lock-warning-face)
      ;; Emacs >= 20 and XEmacs >= 21 has a font-lock-warning-face.
      'font-lock-warning-face
    ;; Otherwise we provide a face.
    'c-invalid-face))

(unless (c-face-name-p c-invalid-face-name)
  (defconst c-invalid-face 'c-invalid-face) ; Necessary in Emacs 19.
  (defface c-invalid-face
    '((((class color) (background light)) (:foreground "red"))
      (((class color)) (:foreground "hotpink"))
      (t (:inverse-video t)))
    "Face used to highlight invalid syntax."
    :group 'c-fonts))

;; To make hard spaces visible an inverted version of
;; `c-invalid-face-name' is used.  Since font-lock in Emacs expands
;; all face names in `font-lock-keywords' as variables we need to have
;; a variable for it that resolves to its own name.
(defconst c-nonbreakable-space-face 'c-nonbreakable-space-face)

(cc-bytecomp-defun face-inverse-video-p) ; Only in Emacs.
(cc-bytecomp-defun face-property-instance) ; Only in XEmacs.

(defun c-make-inverse-face (oldface newface)
  ;; Emacs and XEmacs have completely different face manipulation
  ;; routines. :P
  ;;
  ;; This function does not do any hidden buffer changes
  (copy-face oldface newface)
  (cond ((fboundp 'face-inverse-video-p)
	 ;; Emacs 20 and later.  This only looks at the inverse flag
	 ;; in the current frame.  Other display configurations might
	 ;; be different, but it can only show if the same Emacs has
	 ;; frames on e.g. a color and a monochrome display
	 ;; simultaneously.
	 (unless (face-inverse-video-p oldface)
	   (invert-face newface)))
	((fboundp 'face-property-instance)
	 ;; XEmacs.  Same pitfall here.
	 (unless (face-property-instance oldface 'reverse)
	   (invert-face newface)))
	(t
	 ;; Emacs 19 has no inverse flag at all.  Just inverse the
	 ;; face and hope it wasn't inversed already.
	 (invert-face newface))))

(eval-and-compile
  ;; We need the following functions during compilation since they're
  ;; called when the `c-lang-defconst' initializers are evaluated.
  ;; Define them at runtime too for the sake of derived modes.

  (defmacro c-put-font-lock-face (from to face)
    ;; Put a face on a region (overriding any existing face) in the way
    ;; font-lock would do it.  In XEmacs that means putting an
    ;; additional font-lock property, or else the font-lock package
    ;; won't recognize it as fontified and might override it
    ;; incorrectly.
    (if (fboundp 'font-lock-set-face)
	;; Note: This function has no docstring in XEmacs so it might be
	;; considered internal.
	`(font-lock-set-face ,from ,to ,face)
      `(put-text-property ,from ,to 'face ,face)))

  (defmacro c-remove-font-lock-face (from to)
    ;; This is the inverse of `c-put-font-lock-face'.
    (if (fboundp 'font-lock-remove-face)
	`(font-lock-remove-face ,from ,to)
      `(remove-text-properties ,from ,to '(face nil))))

  (defmacro c-put-font-lock-string-face (from to)
    ;; Put `font-lock-string-face' on a string.  The surrounding
    ;; quotes are included in Emacs but not in XEmacs.  The passed
    ;; region should include them.
    (if (featurep 'xemacs)
	`(c-put-font-lock-face (1+ ,from) (1- ,to) 'font-lock-string-face)
      `(c-put-font-lock-face ,from ,to 'font-lock-string-face)))

  (defmacro c-fontify-types-and-refs (varlist &rest body)
    ;; Like `let', but additionally activates `c-record-type-identifiers'
    ;; and `c-record-ref-identifiers', and fontifies the recorded ranges
    ;; accordingly on exit.
    `(let ((c-record-type-identifiers t)
	   c-record-ref-identifiers
	   ,@varlist)
       (prog1 (progn ,@body)
	 (c-fontify-recorded-types-and-refs))))
  (put 'c-fontify-types-and-refs 'lisp-indent-function 1)
  (eval-after-load "edebug" '(def-edebug-spec c-fontify-types-and-refs let*))

  (defun c-skip-comments-and-strings (limit)
    ;; If the point is within a region fontified as a comment or
    ;; string literal skip to the end of it or to LIMIT, whichever
    ;; comes first, and return t.  Otherwise return nil.  The match
    ;; data is not clobbered.
    (when (c-got-face-at (point) c-literal-faces)
      (while (progn
	       (goto-char (next-single-property-change
			   (point) 'face nil limit))
	       (and (< (point) limit)
		    (c-got-face-at (point) c-literal-faces))))
      t))

  (defun c-make-font-lock-search-function (regexp &rest highlights)
    ;; This function makes a byte compiled function that works much like
    ;; a matcher element in `font-lock-keywords'.  It cuts out a little
    ;; bit of the overhead compared to a real matcher.  The main reason
    ;; is however to pass the real search limit to the anchored
    ;; matcher(s), since most (if not all) font-lock implementations
    ;; arbitrarily limits anchored matchers to the same line, and also
    ;; to insulate against various other irritating differences between
    ;; the different (X)Emacs font-lock packages.
    ;;
    ;; REGEXP is the matcher, which must be a regexp.  Only matches
    ;; where the beginning is outside any comment or string literal are
    ;; significant.
    ;;
    ;; HIGHLIGHTS is a list of highlight specs, just like in
    ;; `font-lock-keywords', with these limitations: The face is always
    ;; overridden (no big disadvantage, since hits in comments etc are
    ;; filtered anyway), there is no "laxmatch", and an anchored matcher
    ;; is always a form which must do all the fontification directly.
    ;; `limit' is a variable bound to the real limit in the context of
    ;; the anchored matcher forms.
    ;;
    ;; This function does not do any hidden buffer changes, but the
    ;; generated functions will.  They are however used in places
    ;; covered by the font-lock context.

    ;; Note: Replace `byte-compile' with `eval' to debug the generated
    ;; lambda easier.
    (byte-compile
     `(lambda (limit)
	(let (-match-end-pos-
	      ;; The font-lock package in Emacs is known to clobber
	      ;; `parse-sexp-lookup-properties' (when it exists).
	      (parse-sexp-lookup-properties
	       (cc-eval-when-compile
		 (boundp 'parse-sexp-lookup-properties))))
	  (while (re-search-forward ,regexp limit t)
	    (setq -match-end-pos- (point))
	    (unless (progn
		      (goto-char (match-beginning 0))
		      (c-skip-comments-and-strings limit))
	      (goto-char -match-end-pos-)
	      ,@(mapcar
		 (lambda (highlight)
		   (if (integerp (car highlight))
		       (progn
			 (unless (nth 2 highlight)
			   (error
			    "The override flag must currently be set in %s"
			    highlight))
			 (when (nth 3 highlight)
			   (error
			    "The laxmatch flag may currently not be set in %s"
			    highlight))
			 `(save-match-data
			    (c-put-font-lock-face
			     (match-beginning ,(car highlight))
			     (match-end ,(car highlight))
			     ,(elt highlight 1))))
		     (when (nth 3 highlight)
		       (error "Match highlights currently not supported in %s"
			      highlight))
		     `(progn
			,(nth 1 highlight)
			(save-match-data ,(car highlight))
			,(nth 2 highlight))))
		 highlights))))
	nil))))

(defun c-fontify-recorded-types-and-refs ()
  ;; Converts the ranges recorded on `c-record-type-identifiers' and
  ;; `c-record-ref-identifiers' to fontification.
  (let (elem)
    (while (consp c-record-type-identifiers)
      (setq elem (car c-record-type-identifiers)
	    c-record-type-identifiers (cdr c-record-type-identifiers))
      (c-put-font-lock-face (car elem) (cdr elem)
			    'font-lock-type-face))
    (while c-record-ref-identifiers
      (setq elem (car c-record-ref-identifiers)
	    c-record-ref-identifiers (cdr c-record-ref-identifiers))
      ;; Note that the reference face is a variable that is
      ;; dereferenced, since it's an alias in Emacs.
      (c-put-font-lock-face (car elem) (cdr elem)
			    c-reference-face-name))))

(c-lang-defconst c-cpp-matchers
  "Font lock matchers for preprocessor directives and purely lexical
stuff.  Used on level 1 and higher."

  ;; Note: `c-font-lock-declarations' assumes that no matcher here
  ;; sets `font-lock-type-face' in languages where
  ;; `c-recognize-<>-arglists' is set.

  t `(,@(when (c-lang-const c-opt-cpp-prefix)
	  (let* ((noncontinued-line-end "\\(\\=\\|\\(\\=\\|[^\\]\\)[\n\r]\\)")
		 (ncle-depth (c-regexp-opt-depth noncontinued-line-end))
		 (sws-depth (c-lang-const c-syntactic-ws-depth)))
	    `(;; The stuff after #error and #warning is a message, so
	      ;; fontify it as a string.
	      (,(concat noncontinued-line-end
			(c-lang-const c-opt-cpp-prefix)
			"\\(error\\|warning\\)\\>\\s *\\(.*\\)$")
	       ,(+ ncle-depth 2) font-lock-string-face)

	      ;; Fontify filenames in #include <...> as strings.
	      (,(concat noncontinued-line-end
			(c-lang-const c-opt-cpp-prefix)
			"\\(import\\|include\\)\\>"
			(c-lang-const c-syntactic-ws)
			"\\(<[^>\n\r]*>?\\)")
	       (,(+ ncle-depth sws-depth 2)
		font-lock-string-face)

	       ;; Use an anchored matcher to put paren syntax on the brackets.
	       (,(byte-compile
		  `(lambda (limit)
		     (let ((beg-pos
			    (match-beginning ,(+ ncle-depth sws-depth 2)))
			   (end-pos
			    (1- (match-end ,(+ ncle-depth sws-depth 2)))))
		       (if (eq (char-after end-pos) ?>)
			   (progn
			     (c-mark-<-as-paren beg-pos)
			     (c-mark->-as-paren end-pos))
			 (c-clear-char-property beg-pos 'syntax-table)))
		     nil))))

	      ;; #define.
	      (,(c-make-font-lock-search-function
		 (concat
		  noncontinued-line-end
		  (c-lang-const c-opt-cpp-prefix)
		  "define\\>"
		  (c-lang-const c-syntactic-ws)
		  "\\(" (c-lang-const c-symbol-key) "\\)" ; 1 + ncle + sws
		  (concat "\\("		; 2 + ncle + sws + c-sym-key
			  ;; Macro with arguments - a "function".
			  "\\(\(\\)"	; 3 + ncle + sws + c-sym-key
			  "\\|"
			  ;; Macro without arguments - a "variable".
			  "\\([^\(]\\|$\\)"
			  "\\)"))
		 `((if (match-beginning ,(+ 3 ncle-depth sws-depth
					    (c-lang-const c-symbol-key-depth)))
		       ;; "Function".  Fontify the name and the arguments.
		       (save-restriction
			 (c-put-font-lock-face
			  (match-beginning ,(+ 1 ncle-depth sws-depth))
			  (match-end ,(+ 1 ncle-depth sws-depth))
			  'font-lock-function-name-face)
			 (goto-char (match-end
				     ,(+ 3 ncle-depth sws-depth
					 (c-lang-const c-symbol-key-depth))))

			 (narrow-to-region (point-min) limit)
			 (while (and
				 (progn
				   (c-forward-syntactic-ws)
				   (looking-at c-symbol-key))
				 (progn
				   (c-put-font-lock-face
				    (match-beginning 0) (match-end 0)
				    'font-lock-variable-name-face)
				   (goto-char (match-end 0))
				   (c-forward-syntactic-ws)
				   (eq (char-after) ?,)))
			   (forward-char)))

		     ;; "Variable".
		     (c-put-font-lock-face
		      (match-beginning ,(+ 1 ncle-depth sws-depth))
		      (match-end ,(+ 1 ncle-depth sws-depth))
		      'font-lock-variable-name-face)))))

	      ;; Fontify cpp function names in preprocessor
	      ;; expressions in #if and #elif.
	      ,(when (c-lang-const c-cpp-defined-fns)
		 `(,(c-make-font-lock-search-function
		     (concat noncontinued-line-end
			     (c-lang-const c-opt-cpp-prefix)
			     "\\(if\\|elif\\)\\>" ; 1 + ncle-depth
			     ;; Match the whole logical line to look
			     ;; for the functions in.
			     "\\(\\\\\\(.\\|[\n\r]\\)\\|[^\n\r]\\)*")
		     `((let ((limit (match-end 0)))
			 (while (re-search-forward
				 ,(concat "\\<\\("
					  (c-regexp-opt
					   (c-lang-const c-cpp-defined-fns)
					   nil)
					  "\\)\\>"
					  "\\s *\(?")
				 limit 'move)
			   (c-put-font-lock-face (match-beginning 1)
						 (match-end 1)
						 c-preprocessor-face-name)))
		       (goto-char (match-end ,(1+ ncle-depth)))))))

	      ;; Fontify the directive names.
	      (,(c-make-font-lock-search-function
		 (concat noncontinued-line-end
			 "\\("
			 (c-lang-const c-opt-cpp-prefix)
			 "[" (c-lang-const c-symbol-chars) "]+"
			 "\\)")
		 `(,(1+ ncle-depth) c-preprocessor-face-name t)))
	      )))

      ,@(when (c-major-mode-is 'pike-mode)
	  `((eval . (list "\\`#![^\n\r]*"
			  0 c-preprocessor-face-name))))

      ;; Make hard spaces visible through an inverted `c-invalid-face-name'.
      (eval . (list
	       "\240"
	       0 (progn
		   (unless (c-face-name-p 'c-nonbreakable-space-face)
		     (c-make-inverse-face c-invalid-face-name
					  'c-nonbreakable-space-face))
		   'c-nonbreakable-space-face)))
      ))

(defun c-font-lock-invalid-string ()
  ;; Assuming the point is after the opening character of a string,
  ;; fontify that char with `c-invalid-face-name' if the string
  ;; decidedly isn't terminated properly.
  (let ((start (1- (point))))
    (save-excursion
      (and (nth 3 (parse-partial-sexp start (c-point 'eol)))
	   (if (c-major-mode-is '(c-mode c++-mode objc-mode pike-mode))
	       ;; There's no \ before the newline.
	       (not (eq (char-before (point)) ?\\))
	     ;; Quoted newlines aren't supported.
	     t)
	   (if (c-major-mode-is 'pike-mode)
	       ;; There's no # before the string, so newlines
	       ;; aren't allowed.
	       (not (eq (char-before start) ?#))
	     t)
	   (c-put-font-lock-face start (1+ start) c-invalid-face-name)))))

(c-lang-defconst c-basic-matchers-before
  "Font lock matchers for basic keywords, labels, references and various
other easily recognizable things that should be fontified before generic
casts and declarations are fontified.  Used on level 2 and higher."

  ;; Note: `c-font-lock-declarations' assumes that no matcher here
  ;; sets `font-lock-type-face' in languages where
  ;; `c-recognize-<>-arglists' is set.

  t `(;; Put a warning face on the opener of unclosed strings that
      ;; can't span lines.  Later font
      ;; lock packages have a `font-lock-syntactic-face-function' for
      ;; this, but it doesn't give the control we want since any
      ;; fontification done inside the function will be
      ;; unconditionally overridden.
      ,(c-make-font-lock-search-function
	;; Match a char before the string starter to make
	;; `c-skip-comments-and-strings' work correctly.
	(concat ".\\(" c-string-limit-regexp "\\)")
	'((c-font-lock-invalid-string)))

      ;; Fontify keyword constants.
      ,@(when (c-lang-const c-constant-kwds)
	  (let ((re (c-make-keywords-re nil (c-lang-const c-constant-kwds))))
	    (if (c-major-mode-is 'pike-mode)
		;; No symbol is a keyword after "->" in Pike.
		`((eval . (list ,(concat "\\(\\=\\|\\(\\=\\|[^-]\\)[^>]\\)"
					 "\\<\\(" re "\\)\\>")
				3 c-constant-face-name)))
	      `((eval . (list ,(concat "\\<\\(" re "\\)\\>")
			      1 c-constant-face-name))))))

      ;; Fontify all keywords except the primitive types.
      ,(if (c-major-mode-is 'pike-mode)
	   ;; No symbol is a keyword after "->" in Pike.
	   `(,(concat "\\(\\=\\|\\(\\=\\|[^-]\\)[^>]\\)"
		      "\\<" (c-lang-const c-regular-keywords-regexp))
	     3 font-lock-keyword-face)
	 `(,(concat "\\<" (c-lang-const c-regular-keywords-regexp))
	   1 font-lock-keyword-face))

      ;; Fontify leading identifiers in fully qualified names like
      ;; "foo::bar" in languages that supports such things.
      ,@(when (c-lang-const c-opt-identifier-concat-key)
	  `((,(byte-compile
	       ;; Must use a function here since we match longer
	       ;; than we want to move before doing a new search.
	       ;; This is not necessary for XEmacs >= 20 since it
	       ;; restarts the search from the end of the first
	       ;; highlighted submatch (something that causes
	       ;; problems in other places).
	       `(lambda (limit)
		  (while (re-search-forward
			  ,(concat "\\(\\<" ; 1
				   "\\(" (c-lang-const c-symbol-key) "\\)" ; 2
				   "[ \t\n\r\f\v]*"
				   (c-lang-const c-opt-identifier-concat-key)
				   "[ \t\n\r\f\v]*"
				   "\\)"
				   "\\("
				   (c-lang-const c-opt-after-id-concat-key)
				   "\\)")
			  limit t)
		    (unless (progn
			      (goto-char (match-beginning 0))
			      (c-skip-comments-and-strings limit))
		      (or (get-text-property (match-beginning 2) 'face)
			  (c-put-font-lock-face (match-beginning 2)
						(match-end 2)
						c-reference-face-name))
		      (goto-char (match-end 1)))))))))

      ;; Fontify the special declarations in Objective-C.
      ,@(when (c-major-mode-is 'objc-mode)
	  `(;; Fontify class names in the beginning of message expressions.
	    ,(c-make-font-lock-search-function
	      "\\["
	      '((c-fontify-types-and-refs ()
		  (c-forward-syntactic-ws limit)
		  (let ((start (point)))
		    ;; In this case we accept both primitive and known types.
		    (when (eq (c-forward-type) 'known)
		      (goto-char start)
		      (let ((c-promote-possible-types t))
			(c-forward-type))))
		  (if (> (point) limit) (goto-char limit)))))

	    ;; The @interface/@implementation/@protocol directives.
	    (,(concat "\\<"
		      (c-regexp-opt
		       '("@interface" "@implementation" "@protocol")
		       t)
		      "\\>")
	     (,(byte-compile
		(lambda (limit)
		  (let (;; The font-lock package in Emacs is known to clobber
			;; `parse-sexp-lookup-properties' (when it exists).
			(parse-sexp-lookup-properties
			 (cc-eval-when-compile
			   (boundp 'parse-sexp-lookup-properties))))
		    (save-restriction
		      (narrow-to-region (point-min) limit)
		      (c-font-lock-objc-iip-decl)))
		  nil))))))
      ))

(defun c-font-lock-complex-decl-prepare (limit)
  ;; Called before any of the matchers in `c-complex-decl-matchers'.
  ;; Nil is always returned.

  ;;(message "c-font-lock-complex-decl-prepare %s %s" (point) limit)

  ;; Clear the list of found types if we start from the start of the
  ;; buffer, to make it easier to get rid of misspelled types and
  ;; variables that has gotten recognized as types in malformed code.
  (when (bobp)
    (c-clear-found-types))

  ;; Clear the c-type char properties in the region to recalculate
  ;; them properly. This is necessary e.g. to handle constructs that
  ;; might been required as declarations temporarily during editing.
  ;; The interesting properties are anyway those put on the closest
  ;; token before the region.
  (c-clear-char-properties (point) limit 'c-type)

  ;; Update `c-state-cache' to the beginning of the region.  This will
  ;; make `c-beginning-of-syntax' go faster when it's used later on,
  ;; and it's near the point most of the time.
  (c-parse-state)

  ;; Check if the fontified region starts inside a declarator list so
  ;; that `c-font-lock-declarators' should be called at the start.
  (let ((prop (save-excursion
		(c-backward-syntactic-ws)
		(unless (bobp)
		  (c-get-char-property (1- (point)) 'c-type)))))
    (when (memq prop '(c-decl-id-start c-decl-type-start))
      (c-forward-syntactic-ws limit)
      (c-font-lock-declarators limit t (eq prop 'c-decl-type-start))))

  nil)

(defun c-font-lock-<>-arglists (limit)
  ;; Fontify types and references in names containing angle bracket
  ;; arglists from the point to LIMIT.  This will also fontify cases
  ;; like normal function calls on the form "foo (a < b, c > d)", but
  ;; `c-font-lock-declarations' will undo that later.  Nil is always
  ;; returned.

  (let (;; The font-lock package in Emacs is known to clobber
	;; `parse-sexp-lookup-properties' (when it exists).
	(parse-sexp-lookup-properties
	 (cc-eval-when-compile
	   (boundp 'parse-sexp-lookup-properties)))
	id-start id-end pos kwd-sym)

    (while (and (< (point) limit)
		(re-search-forward c-opt-<>-arglist-start limit t))

      (setq id-start (match-beginning 1)
	    id-end (match-end 1)
	    pos (point))

      (goto-char id-start)
      (unless (c-skip-comments-and-strings limit)
	(setq kwd-sym nil)
	(if (or (not (eq (get-text-property id-start 'face)
			 'font-lock-keyword-face))
		(when (looking-at c-opt-<>-sexp-key)
		  (setq kwd-sym (c-keyword-sym (match-string 1)))))
	    (progn
	      (goto-char (1- pos))
	      ;; Check for comment/string both at the identifier and
	      ;; at the "<".
	      (unless (c-skip-comments-and-strings limit)

		(when (c-forward-<>-arglist (c-keyword-member kwd-sym
							      'c-<>-type-kwds)
					    t)
		  (when (and c-opt-identifier-concat-key
			     (not (get-text-property id-start 'face)))
		    (c-forward-syntactic-ws)
		    (if (looking-at c-opt-identifier-concat-key)
			(c-put-font-lock-face id-start id-end
					      c-reference-face-name)
		      (c-put-font-lock-face id-start id-end
					    'font-lock-type-face))))

		(goto-char pos)))
	  (goto-char pos)))))
  nil)

(defun c-font-lock-declarators (limit list types)
  ;; Assuming the point is at the start of a declarator in a
  ;; declaration, fontify it.  If LIST is non-nil, fontify also all
  ;; following declarators in a comma separated list (e.g.  "foo" and
  ;; "bar" in "int foo = 17, bar;").  Stop at LIMIT.  If TYPES is
  ;; non-nil, fontify all identifiers as types.  Nil is always
  ;; returned.

  ;;(message "c-font-lock-declarators from %s to %s" (point) limit)
  (c-fontify-types-and-refs
      ((pos (point)) next-pos id-start id-end
       paren-depth
       id-face got-init
       c-last-identifier-range
       (separator-prop (if types 'c-decl-type-start 'c-decl-id-start)))

    (while (and
	    pos
	    (< (point) limit)

	    (let (got-identifier)
	      (setq paren-depth 0)
	      ;; Skip over type decl prefix operators.  (Note similar
	      ;; code in `c-font-lock-declarations'.)
	      (while (and (looking-at c-type-decl-prefix-key)
			  (if (and (c-major-mode-is 'c++-mode)
				   (match-beginning 2))
			      ;; If the second submatch matches in C++ then
			      ;; we're looking at an identifier that's a
			      ;; prefix only if it specifies a member pointer.
			      (progn
				(setq id-start (point))
				(c-forward-name)
				(if (looking-at "\\(::\\)")
				    ;; We only check for a trailing "::" and
				    ;; let the "*" that should follow be
				    ;; matched in the next round.
				    t
				  ;; It turned out to be the real identifier,
				  ;; so flag that and stop.
				  (setq got-identifier t)
				  nil))
			    t))
		(if (eq (char-after) ?\()
		    (progn
		      (setq paren-depth (1+ paren-depth))
		      (forward-char))
		  (goto-char (match-end 1)))
		(c-forward-syntactic-ws))

	      ;; If we didn't pass the identifier above already, do it now.
	      (unless got-identifier
		(setq id-start (point))
		(c-forward-name))
	      (setq id-end (point))

	      (/= id-end pos))

	    ;; Skip out of the parens surrounding the identifier.
	    (or (= paren-depth 0)
		(c-safe (goto-char (scan-lists (point) 1 paren-depth))))

	    (<= (point) limit)

	    ;; Search syntactically to the end of the declarator (";",
	    ;; ",", ")", ">" (for <> arglists), eob etc) or to the
	    ;; beginning of an initializer or function prototype ("="
	    ;; or "\\s\(").
	    (c-syntactic-re-search-forward
	     "[\];,\{\}\[\)>]\\|\\'\\|\\(=\\|\\(\\s\(\\)\\)" limit t t))

      (setq next-pos (match-beginning 0)
	    id-face (if (match-beginning 2)
			'font-lock-function-name-face
		      'font-lock-variable-name-face)
	    got-init (match-beginning 1))

      (if types
	  ;; Register and fontify the identifer as a type.
	  (let ((c-promote-possible-types t))
	    (goto-char id-start)
	    (c-forward-type))
	;; Fontify the last symbol in the identifier if it isn't fontified
	;; already.  The check is necessary only in certain cases where this
	;; function is used "sloppily", e.g. in `c-simple-decl-matchers'.
	(when (and c-last-identifier-range
		   (not (get-text-property (car c-last-identifier-range)
					   'face)))
	  (c-put-font-lock-face (car c-last-identifier-range)
				(cdr c-last-identifier-range)
				id-face)))

      (goto-char next-pos)
      (setq pos nil)
      (when list
	;; Jump past any initializer or function prototype to see if
	;; there's a ',' to continue at.

	(cond ((eq id-face 'font-lock-function-name-face)
	       ;; Skip a parenthesized initializer (C++) or a function
	       ;; prototype.
	       (if (c-safe (c-forward-sexp 1) t)
		   (c-forward-syntactic-ws limit)
		 (goto-char limit)))

	      (got-init
	       ;; Skip an initializer expression.
	       (if (c-syntactic-re-search-forward "[;,]" limit 'move t)
		   (backward-char)))

	      (t (c-forward-syntactic-ws limit)))

	;; If a ',' is found we set pos to the next declarator and iterate.
	(when (and (< (point) limit) (looking-at ","))
	  (c-put-char-property (point) 'c-type separator-prop)
	  (forward-char)
	  (c-forward-syntactic-ws limit)
	  (setq pos (point))))))
  nil)

(defconst c-font-lock-maybe-decl-faces
  ;; List of faces that might be put at the start of a type when
  ;; `c-font-lock-declarations' runs.  This needs to be evaluated to
  ;; ensure that face name aliases in Emacs are resolved.
  (list nil
	font-lock-type-face
	c-reference-face-name
	font-lock-keyword-face))

;; Macro used inside `c-font-lock-declarations'.  It ought to be a
;; defsubst or perhaps even a defun, but it contains lots of free
;; variables that refer to things inside `c-font-lock-declarations'.
(defmacro c-fl-shift-type-backward (&optional short)
  ;; `c-font-lock-declarations' can consume an arbitrary length list
  ;; of types when parsing a declaration, which means that it
  ;; sometimes consumes the identifier in the declaration as a type.
  ;; This is used to "backtrack" and make the last type be treated
  ;; as an identifier instead.
  `(progn
     ,(unless short
	;; These identifiers are bound only in the inner let.
	'(setq identifier-type at-type
	       identifier-start type-start
	       identifier-end type-end))
     (if (setq at-type (if (eq prev-at-type 'prefix)
			   t
			 prev-at-type))
	 (setq type-start prev-type-start
	       type-end prev-type-end)
       (setq type-start start-pos
	     type-end start-pos))
     ,(unless short
	;; These identifiers are bound only in the inner let.
	'(setq start type-end
	       got-parens nil
	       got-identifier t
	       got-suffix t
	       got-suffix-after-parens t
	       paren-depth 0))))

(defun c-font-lock-declarations (limit)
  ;; Fontify all the declarations and casts from the point to LIMIT.
  ;; Assumes that strings and comments have been fontified already.
  ;; Nil is always returned.
  ;;
  ;; This function can make hidden buffer changes, but the font-lock
  ;; context covers that.

  ;;(message "c-font-lock-declarations search from %s to %s" (point) limit)

  (save-restriction
    (let (start-pos
	  c-disallow-comma-in-<>-arglists
	  ;; Nonzero if the `c-decl-prefix-re' match is in an arglist context,
	  ;; as opposed to a statement-level context.  The major difference is
	  ;; that "," works as declaration delimiter in an arglist context,
	  ;; whereas it only separates declarators in the same declaration in
	  ;; a statement context.  If it's nonzero then the value is the
	  ;; matched char, e.g. ?\( or ?,.
	  arglist-match
	  ;; 'decl if we're in an arglist containing declarations (but if
	  ;; `c-recognize-paren-inits' is set it might also be an initializer
	  ;; arglist), '<> if the arglist is of angle bracket type, 'other if
	  ;; it's some other arglist, or nil if not in an arglist at all.
	  arglist-type
	  ;; Set to the result of `c-forward-type'.
	  at-type
	  ;; These record the start and end of the type or possible type found
	  ;; by `c-forward-type'.  `type-start' is at the start of the first
	  ;; type token, and `type-end' is at the start of the first token
	  ;; after the type (and after any specifiers).
	  type-start type-end
	  ;; These store `at-type', `type-start' and `type-end' of the
	  ;; identifier before the one in those variables.  The previous
	  ;; identifier might turn out to be the real type in a declaration if
	  ;; the last one has to be the declarator in it.  If `prev-at-type'
	  ;; is nil then the other variables have undefined values.
	  prev-at-type prev-type-start prev-type-end
	  ;; Whether we've found a declaration or a cast.  We might know this
	  ;; before we've found the type in it.
	  at-decl-or-cast
	  ;; Set when we need to back up to parse this as a declaration but
	  ;; not as a cast.
	  backup-if-not-cast
	  ;; Set if we've found a "typedef" specifier.  The identifiers in the
	  ;; declaration are then fontified as types.
	  at-typedef
	  ;; Set if we've found a specifier that can start a declaration where
	  ;; there's no type.
	  maybe-typeless
	  ;; The position of the next token after the closing paren of the
	  ;; last fontified cast.
	  last-cast-end
	  ;; The same for the currently investigated cast.
	  cast-end
	  ;; The maximum of the end positions of all the checked type decl
	  ;; expressions in the successfully identified declarations.  The
	  ;; position might be either before or after the syntactic whitespace
	  ;; following the last token in the type decl expression.
	  (max-type-decl-end 0)
	  ;; Same as `max-type-decl-*', but used when we're before
	  ;; `token-pos'.
	  (max-type-decl-end-before-token 0)
	  ;; Allow recording of identifier ranges in `c-forward-type' etc for
	  ;; later fontification.  Not using `c-fontify-types-and-refs' here
	  ;; since the ranges should be fontified selectively only when a
	  ;; declaration or cast has been successfully recognized.
	  c-record-type-identifiers
	  c-record-ref-identifiers
	  ;; The font-lock package in Emacs is known to clobber
	  ;; `parse-sexp-lookup-properties' (when it exists).
	  (parse-sexp-lookup-properties
	   (cc-eval-when-compile
	     (boundp 'parse-sexp-lookup-properties))))

      ;; Below we fontify a whole declaration even when it crosses the limit,
      ;; to avoid gaps when lazy-lock fontifies the file a screenful at a
      ;; time.  That is however annoying during editing, e.g. the following is
      ;; a common situation while the first line is being written:
      ;;
      ;;     my_variable
      ;;     some_other_variable = 0;
      ;;
      ;; font-lock will put the limit at the beginning of the second line
      ;; here, and if we go past it we'll fontify "my_variable" as a type and
      ;; "some_other_variable" as an identifier, and the latter will not
      ;; correct itself until the second line is changed.  To avoid that we
      ;; narrow to the limit if the region to fontify is a single line.
      (when (<= limit (c-point 'bonl))
	(narrow-to-region
	 (point-min)
	 (save-excursion
	   ;; Narrow after any operator chars following the limit though, since
	   ;; those characters can be useful in recognizing a declaration (in
	   ;; particular the '{' that opens a function body after the header).
	   (goto-char limit)
	   (skip-chars-forward c-nonsymbol-chars)
	   (point))))

      (c-find-decl-spots
       limit
       c-identifier-start
       c-font-lock-maybe-decl-faces

       (lambda (match-pos inside-macro)
	 (catch 'false-alarm
	   ;; Don't do anything more if we're looking at a keyword
	   ;; that can't start a declaration.
	   (when (and (eq (get-text-property (point) 'face)
			  'font-lock-keyword-face)
		      (looking-at c-not-decl-init-keywords))
	     (throw 'false-alarm t))

	   ;; Set `arglist-match' and `arglist-type'.  Look for "<" for the
	   ;; sake of C++-style template arglists.
	   (setq arglist-match (char-before match-pos))
	   (if (memq arglist-match '(?\( ?, ?\[ ?<))

	       ;; Find out the type of the arglist.
	       (if (<= match-pos (point-min))
		   (setq arglist-type 'other)
		 (let ((type (c-get-char-property (1- match-pos) 'c-type)))
		   (cond ((eq type 'c-decl-arg-start)
			  ;; Got a cached hit in a declaration arglist.
			  (setq arglist-type 'decl))
			 ((or (eq type 'c-<>-arg-sep)
			      (eq arglist-match ?<))
			  ;; Inside an angle bracket arglist.
			  (setq arglist-type '<>))
			 (type
			  ;; Got a cached hit in some other type of arglist.
			  (setq arglist-type 'other))
			 ((if inside-macro
			      (< match-pos max-type-decl-end-before-token)
			    (< match-pos max-type-decl-end))
			  ;; The point is within the range of a previously
			  ;; encountered type decl expression, so the arglist
			  ;; is probably one that contains declarations.
			  ;; However, if `c-recognize-paren-inits' is set it
			  ;; might also be an initializer arglist.
			  (setq arglist-type 'decl)
			  ;; The result of this check is cached with a char
			  ;; property on the match token, so that we can look
			  ;; it up again when refontifying single lines in a
			  ;; multiline declaration.
			  (c-put-char-property (1- match-pos)
					       'c-type 'c-decl-arg-start))
			 (t
			  (setq arglist-type 'other)))))

	     (setq arglist-match nil
		   arglist-type nil))

	   (setq at-type nil
		 at-decl-or-cast nil
		 backup-if-not-cast nil
		 at-typedef nil
		 maybe-typeless nil
		 c-record-type-identifiers t
		 c-record-ref-identifiers nil
		 ;; `start-pos' is used below to point to the start of the
		 ;; first type, i.e. after any leading specifiers.  It might
		 ;; also point at the beginning of the preceding syntactic
		 ;; whitespace.
		 start-pos (point)
		 ;; If we're in a normal arglist context we don't want to
		 ;; recognize commas in nested angle bracket arglists since
		 ;; those commas could be part of our own arglist.
		 c-disallow-comma-in-<>-arglists
		 (and c-recognize-<>-arglists
		      (eq arglist-type 'other)))

	   (when (and c-disallow-comma-in-<>-arglists
		      (/= arglist-match ?,))
	     ;; We're standing at the start of a normal arglist so remove any
	     ;; angle bracket arglists containing commas that's been
	     ;; recognized inside it by the preceding slightly opportunistic
	     ;; scan in `c-font-lock-<>-arglists'.
	     (while (and (c-syntactic-re-search-forward
			  c-opt-<>-arglist-start-in-paren nil t t)
			 (match-beginning 1))
	       (backward-char)
	       (when (save-match-data
		       (and (c-get-char-property (point) 'syntax-table)
			    (not (c-forward-<>-arglist nil t))))
		 (c-remove-font-lock-face (match-beginning 2) (match-end 2))))
	     (goto-char start-pos))

	   ;; Check for a type, but be prepared to skip over leading
	   ;; specifiers like "static".  Unknown symbols are treated as
	   ;; possible types, but they could also be specifiers disguised
	   ;; through macros like __INLINE__, so we recognize both types and
	   ;; known specifiers after them too.
	   (while (let ((start (point))
			(res (unless (eq at-type t)
			       ;; Don't look for a type if we already found a
			       ;; positive one; we only loop for the
			       ;; `c-specifier-key' check then.
			       (c-forward-type))))

		    (when res
		      ;; Found a known or possible type or a prefix of a known
		      ;; type.

		      (when at-type
			;; Got two identifiers with nothing but whitespace
			;; between them.  That can only happen in
			;; declarations.
			(setq at-decl-or-cast t)

			(when (eq at-type 'found)
			  ;; If the previous identifier is a found type we
			  ;; record it as a real one; it might be some sort of
			  ;; alias for a prefix like "unsigned".
			  (save-excursion
			    (goto-char type-start)
			    (let ((c-promote-possible-types t))
			      (c-forward-type)))))

		      (setq prev-at-type at-type
			    prev-type-start type-start
			    prev-type-end type-end
			    at-type res
			    type-start start
			    type-end (point))

		      ;; If the type isn't known we continue so that we'll
		      ;; jump over all specifiers and type identifiers.  The
		      ;; reason to do this for a known type prefix is to make
		      ;; things like "unsigned INT16" work.
		      (setq res (not (eq res t))))

		    (if (looking-at c-specifier-key)
			;; Found a known specifier keyword.  The specifier
			;; keywords are restrictive, so we check for them
			;; anywhere inside or around the type(s).  We thereby
			;; avoid having special cases for specifiers like MSVC
			;; '__declspec' which can come after the type.
			(progn
			  (setq at-decl-or-cast t)
			  (let ((kwd-sym (c-keyword-sym (match-string 1))))
			    (when (c-keyword-member
				   kwd-sym 'c-typedef-decl-kwds)
			      (setq at-typedef t))
			    (when (c-keyword-member
				   kwd-sym 'c-typeless-decl-kwds)
			      (setq maybe-typeless t)))
			  (c-forward-keyword-clause)
			  ;; Move type-end forward if we've passed a type,
			  ;; otherwise move start-pos forward.
			  (if at-type
			      (setq type-end (point))
			    (setq start-pos (point))))

		      res)))

	   (cond
	    ((eq at-type 'prefix)
	     ;; A prefix type is itself a primitive type when it's not
	     ;; followed by another type.
	     (setq at-type t))

	    ((not at-type)
	     ;; Got no type but set things up to continue anyway to handle the
	     ;; various cases when a declaration doesn't start with a type.
	     (setq type-end start-pos))

	    ((and (eq at-type 'maybe)
		  (c-major-mode-is 'c++-mode))
	     ;; If it's C++ then check if the last "type" ends on the form
	     ;; "foo::foo" or "foo::~foo", i.e. if it's the name of a
	     ;; (con|de)structor.
	     (save-excursion
	       (let (name end-2 end-1)
		 (goto-char type-end)
		 (c-backward-syntactic-ws)
		 (setq end-2 (point))
		 (when (and
			(c-simple-skip-symbol-backward)
			(progn
			  (setq name
				(buffer-substring-no-properties (point) end-2))
			  ;; Cheating in the handling of syntactic ws below.
			  (< (skip-chars-backward ":~ \t\n\r\v\f") 0))
			(progn
			  (setq end-1 (point))
			  (c-simple-skip-symbol-backward))
			(>= (point) type-start)
			(equal (buffer-substring-no-properties (point) end-1)
			       name))
		   ;; It is a (con|de)structor name.  In that case the
		   ;; declaration is typeless so zap out any preceding
		   ;; identifier(s) that we might have taken as types.
		   (goto-char type-start)
		   (setq at-type nil
			 prev-at-type nil
			 type-end type-start))))))

	   ;; Check for and step over a type decl expression after the thing
	   ;; that is or might be a type.  This can't be skipped since we need
	   ;; the correct end position of the declarator for
	   ;; `max-type-decl-end-*'.
	   (let ((start (point)) (paren-depth 0) pos
		 ;; True if there's a non-open-paren match of
		 ;; `c-type-decl-prefix-key'.
		 got-prefix
		 ;; True if the declarator is surrounded by a parenthesis pair.
		 got-parens
		 ;; True if there is an identifier in the declarator.
		 got-identifier
		 ;; True if there's a non-close-paren match of
		 ;; `c-type-decl-suffix-key'.
		 got-suffix
		 ;; True if there's a prefix or suffix match outside the
		 ;; outermost paren pair that surrounds the declarator.
		 got-prefix-before-parens
		 got-suffix-after-parens
		 ;; True if we've parsed the type decl to a token that
		 ;; is known to end declarations in this context.
		 at-decl-end
		 ;; The earlier values of `at-type', `type-start' and
		 ;; `type-end' if we've shifted the type backwards.
		 identifier-type identifier-start identifier-end)
	     (goto-char type-end)

	     ;; Skip over type decl prefix operators.  (Note similar code in
	     ;; `c-font-lock-declarators'.)
	     (while (and (looking-at c-type-decl-prefix-key)
			 (if (and (c-major-mode-is 'c++-mode)
				  (match-beginning 2))
			     ;; If the second submatch matches in C++ then
			     ;; we're looking at an identifier that's a prefix
			     ;; only if it specifies a member pointer.
			     (when (setq got-identifier (c-forward-name))
			       (if (looking-at "\\(::\\)")
				   ;; We only check for a trailing "::" and
				   ;; let the "*" that should follow be
				   ;; matched in the next round.
				   (progn (setq got-identifier nil) t)
				 ;; It turned out to be the real identifier,
				 ;; so stop.
				 nil))
			   t))
	       (if (eq (char-after) ?\()
		   (progn
		     (setq paren-depth (1+ paren-depth))
		     (forward-char))
		 (unless got-prefix-before-parens
		   (setq got-prefix-before-parens (= paren-depth 0)))
		 (setq got-prefix t)
		 (goto-char (match-end 1)))
	       (c-forward-syntactic-ws))
	     (setq got-parens (> paren-depth 0))

	     ;; Skip over an identifier.
	     (or got-identifier
		 (and (looking-at c-identifier-start)
		      (setq got-identifier (c-forward-name))))

	     ;; Skip over type decl suffix operators.
	     (while (if (looking-at c-type-decl-suffix-key)
			(if (eq (char-after) ?\))
			    (when (> paren-depth 0)
			      (setq paren-depth (1- paren-depth))
			      (forward-char)
			      t)
			  (when (if (save-match-data (looking-at "\\s\("))
				    (c-safe (c-forward-sexp 1) t)
				  (goto-char (match-end 1))
				  t)
			    (unless got-suffix-after-parens
			      (setq got-suffix-after-parens (= paren-depth 0)))
			    (setq got-suffix t)))
		      ;; No suffix matched.  We might have matched the
		      ;; identifier as a type and the open paren of a function
		      ;; arglist as a type decl prefix.  In that case we
		      ;; should "backtrack": Reinterpret the last type as the
		      ;; identifier, move out of the arglist and continue
		      ;; searching for suffix operators.
		      ;;
		      ;; Do this even if there's no preceding type, to cope
		      ;; with old style function declarations in K&R C,
		      ;; (con|de)structors in C++ and `c-typeless-decl-kwds'
		      ;; style declarations.  That isn't applicable in an
		      ;; arglist context, though.
		      (when (and (= paren-depth 1)
				 (not got-prefix-before-parens)
				 (not (eq at-type t))
				 (or prev-at-type
				     maybe-typeless
				     (when c-recognize-typeless-decls
				       (not arglist-type)))
				 (setq pos (c-up-list-forward (point)))
				 (eq (char-before pos) ?\)))
			(c-fl-shift-type-backward)
			(goto-char pos)
			t))
	       (c-forward-syntactic-ws))

	     (when (and maybe-typeless
			(not got-identifier)
			(not got-prefix)
			at-type
			(not (eq at-type t)))
	       ;; Have found no identifier but `c-typeless-decl-kwds' has
	       ;; matched so we know we're inside a declaration.  The
	       ;; preceding type must be the identifier instead.
	       (c-fl-shift-type-backward))

	     (setq
	      at-decl-or-cast
	      (catch 'at-decl-or-cast

		(when (> paren-depth 0)
		  ;; Encountered something inside parens that isn't matched by
		  ;; the `c-type-decl-*' regexps, so it's not a type decl
		  ;; expression.  Try to skip out to the same paren depth to
		  ;; not confuse the cast check below.
		  (c-safe (goto-char (scan-lists (point) 1 paren-depth)))
		  (throw 'at-decl-or-cast nil))

		(setq at-decl-end
		      (looking-at (cond ((eq arglist-type '<>) "[,>]")
					(arglist-type "[,\)]")
					(t "[,;]"))))

		;; Now we've collected info about various characteristics of
		;; the construct we're looking at.  Below follows a decision
		;; tree based on that.  It's ordered to check more certain
		;; signs before less certain ones.

		(if got-identifier
		    (progn

		      (when (and (or at-type maybe-typeless)
				 (not (or got-prefix got-parens)))
			;; Got another identifier directly after the type, so
			;; it's a declaration.
			(throw 'at-decl-or-cast t))

		      (when (and got-parens
				 (not got-prefix)
				 (not got-suffix-after-parens)
				 (or prev-at-type maybe-typeless))
			;; Got a declaration of the form "foo bar (gnu);"
			;; where we've recognized "bar" as the type and "gnu"
			;; as the declarator.  In this case it's however more
			;; likely that "bar" is the declarator and "gnu" a
			;; function argument or initializer (if
			;; `c-recognize-paren-inits' is set), since the parens
			;; around "gnu" would be superfluous if it's a
			;; declarator.  Shift the type one step backward.
			(c-fl-shift-type-backward)))

		  ;; Found no identifier.

		  (if prev-at-type
		      (when (or (= (point) start)
				(and got-suffix
				     (not got-prefix)
				     (not got-parens)))
			;; Got two types after each other, so if this isn't a
			;; cast then the latter probably is the identifier and
			;; we should back up to the previous type.
			(setq backup-if-not-cast t)
			(throw 'at-decl-or-cast t))

		    (when (eq at-type t)
		      ;; If the type is known we know that there can't be any
		      ;; identifier somewhere else, and it's only in
		      ;; declarations in e.g. function prototypes and in casts
		      ;; that the identifier may be left out.
		      (throw 'at-decl-or-cast t))

		    (when (= (point) start)
		      ;; Only got a single identifier (parsed as a type so
		      ;; far).
		      (if (and
			   ;; Check that the identifier isn't at the start of
			   ;; an expression.
			   at-decl-end
			   (cond
			    ((eq arglist-type 'decl)
			     ;; Inside an arglist that contains declarations.
			     ;; If K&R style declarations and parenthesis
			     ;; style initializers aren't allowed then the
			     ;; single identifier must be a type, else we
			     ;; require that it's known or found (primitive
			     ;; types are handled above).
			     (or (and (not c-recognize-knr-p)
				      (not c-recognize-paren-inits))
				 (memq at-type '(known found))))
			    ((eq arglist-type '<>)
			     ;; Inside a template arglist.  Accept known and
			     ;; found types; other identifiers could just as
			     ;; well be constants in C++.
			     (memq at-type '(known found)))))
			  (throw 'at-decl-or-cast t)
			(throw 'at-decl-or-cast nil))))

		  (if (and
		       got-parens
		       (not got-prefix)
		       (not arglist-type)
		       (not (eq at-type t))
		       (or
			prev-at-type
			maybe-typeless
			(when c-recognize-typeless-decls
			  (or (not got-suffix)
			      (not (looking-at
				    c-after-suffixed-type-maybe-decl-key))))))
		      ;; Got an empty paren pair and a preceding type that
		      ;; probably really is the identifier.  Shift the type
		      ;; backwards to make the last one the identifier.  This
		      ;; is analogous to the "backtracking" done inside the
		      ;; `c-type-decl-suffix-key' loop above.
		      ;;
		      ;; Exception: In addition to the conditions in that
		      ;; "backtracking" code, do not shift backward if we're
		      ;; not looking at either `c-after-suffixed-type-decl-key'
		      ;; or "[;,]".  Since there's no preceding type, the
		      ;; shift would mean that the declaration is typeless.
		      ;; But if the regexp doesn't match then we will simply
		      ;; fall through in the tests below and not recognize it
		      ;; at all, so it's better to try it as an abstract
		      ;; declarator instead.
		      (c-fl-shift-type-backward)

		    ;; Still no identifier.

		    (when (and got-prefix (or got-parens got-suffix))
		      ;; Require `got-prefix' together with either
		      ;; `got-parens' or `got-suffix' to recognize it as an
		      ;; abstract declarator: `got-parens' only is probably an
		      ;; empty function call.  `got-suffix' only can build an
		      ;; ordinary expression together with the preceding
		      ;; identifier which we've taken as a type.  We could
		      ;; actually accept on `got-prefix' only, but that can
		      ;; easily occur temporarily while writing an expression
		      ;; so we avoid that case anyway.  We could do a better
		      ;; job if we knew the point when the fontification was
		      ;; invoked.
		      (throw 'at-decl-or-cast t))))

		(when at-decl-or-cast
		  ;; By now we've located the type in the declaration that we
		  ;; know we're in.
		  (throw 'at-decl-or-cast t))

		(when (and got-identifier
			   (not arglist-type)
			   (looking-at c-after-suffixed-type-decl-key)
			   (if (and got-parens
				    (not got-prefix)
				    (not got-suffix)
				    (not (eq at-type t)))
			       ;; Shift the type backward in the case that
			       ;; there's a single identifier inside parens.
			       ;; That can only occur in K&R style function
			       ;; declarations so it's more likely that it
			       ;; really is a function call.  Therefore we
			       ;; only do this after
			       ;; `c-after-suffixed-type-decl-key' has
			       ;; matched.
			       (progn (c-fl-shift-type-backward) t)
			     got-suffix-after-parens))
		  ;; A declaration according to
		  ;; `c-after-suffixed-type-decl-key'.
		  (throw 'at-decl-or-cast t))

		(when (and (or got-prefix (not got-parens))
			   (memq at-type '(t known)))
		  ;; It's a declaration if a known type precedes it and it
		  ;; can't be a function call.
		  (throw 'at-decl-or-cast t))

		;; If we get here we can't tell if this is a type decl or a
		;; normal expression by looking at it alone.  (That's under
		;; the assumption that normal expressions always can look like
		;; type decl expressions, which isn't really true but the
		;; cases where it doesn't hold are so uncommon (e.g. some
		;; placements of "const" in C++) it's not worth the effort to
		;; look for them.)

		(unless (or at-decl-end (looking-at "=[^=]"))
		  ;; If this is a declaration it should end here or its
		  ;; initializer(*) should start here, so check for allowed
		  ;; separation tokens.  Note that this rule doesn't work
		  ;; e.g. with a K&R arglist after a function header.
		  ;;
		  ;; *) Don't check for C++ style initializers using parens
		  ;; since those already have been matched as suffixes.
		  (throw 'at-decl-or-cast nil))

		;; Below are tests that only should be applied when we're
		;; certain to not have parsed halfway through an expression.

		(when (memq at-type '(t known))
		  ;; The expression starts with a known type so treat it as a
		  ;; declaration.
		  (throw 'at-decl-or-cast t))

		(when (and (c-major-mode-is 'c++-mode)
			   ;; In C++ we check if the identifier is a known
			   ;; type, since (con|de)structors use the class name
			   ;; as identifier.  We've always shifted over the
			   ;; identifier as a type and then backed up again in
			   ;; this case.
			   identifier-type
			   (or (memq identifier-type '(found known))
			       (and (eq (char-after identifier-start) ?~)
				    ;; `at-type' probably won't be 'found for
				    ;; destructors since the "~" is then part
				    ;; of the type name being checked against
				    ;; the list of known types, so do a check
				    ;; without that operator.
				    (or (save-excursion
					  (goto-char (1+ identifier-start))
					  (c-forward-syntactic-ws)
					  (c-with-syntax-table
					      c-identifier-syntax-table
					    (looking-at c-known-type-key)))
					(c-check-type (1+ identifier-start)
						      identifier-end)))))
		  (throw 'at-decl-or-cast t))

		(if got-identifier
		    (progn
		      (when (and got-prefix-before-parens
				 at-type
				 (or at-decl-end (looking-at "=[^=]"))
				 (not arglist-type)
				 (not got-suffix))
			;; Got something like "foo * bar;".  Since we're not
			;; inside an arglist it would be a meaningless
			;; expression because the result isn't used.  We
			;; therefore choose to recognize it as a declaration.
			;; Do not allow a suffix since it could then be a
			;; function call.
			(throw 'at-decl-or-cast t))

		      (when (and (or got-suffix-after-parens
				     (looking-at "=[^=]"))
				 (eq at-type 'found)
				 (not (eq arglist-type 'other)))
			;; Got something like "a (*b) (c);" or "a (b) = c;".
			;; It could be an odd expression or it could be a
			;; declaration.  Treat it as a declaration if "a" has
			;; been used as a type somewhere else (if it's a known
			;; type we won't get here).
			(throw 'at-decl-or-cast t)))

		  (when (and arglist-type
			     (or got-prefix
				 (and (eq arglist-type 'decl)
				      (not c-recognize-paren-inits)
				      (or got-parens got-suffix))))
		    ;; Got a type followed by an abstract declarator.  If
		    ;; `got-prefix' is set it's something like "a *" without
		    ;; anything after it.  If `got-parens' or `got-suffix' is
		    ;; set it's "a()", "a[]", "a()[]", or similar, which we
		    ;; accept only if the context rules out expressions.
		    (throw 'at-decl-or-cast t)))

		;; If we had a complete symbol table here (which rules out
		;; `c-found-types') we should return t due to the
		;; disambiguation rule (in at least C++) that anything that
		;; can be parsed as a declaration is a declaration.  Now we're
		;; being more defensive and prefer to highlight things like
		;; "foo (bar);" as a declaration only if we're inside an
		;; arglist that contains declarations.
		(eq arglist-type 'decl))))

	   ;; Point is now after the type decl expression.

	   (cond
	    ;; Check for a cast.
	    ((save-excursion
	       (and
		c-cast-parens

		;; Should be the first type/identifier in a cast paren.
		(memq arglist-match c-cast-parens)

		;; The closing paren should follow.
		(progn
		  (c-forward-syntactic-ws)
		  (looking-at "\\s\)"))

		;; There should be a primary expression after it.
		(let (pos)
		  (forward-char)
		  (c-forward-syntactic-ws)
		  (setq cast-end (point))
		  (and (looking-at c-primary-expr-regexp)
		       (progn
			 (setq pos (match-end 0))
			 (or
			  ;; Check if the expression begins with a prefix
			  ;; keyword.
			  (match-beginning 2)
			  (if (match-beginning 1)
			      ;; Expression begins with an ambiguous operator.
			      ;; Treat it as a cast if it's a type decl or if
			      ;; we've recognized the type somewhere else.
			      (or at-decl-or-cast
				  (memq at-type '(t known found)))
			    ;; Unless it's a keyword, it's the beginning of a
			    ;; primary expression.
			    (not (looking-at c-keywords-regexp)))))
		       ;; If `c-primary-expr-regexp' matched a nonsymbol
		       ;; token, check that it matched a whole one so that we
		       ;; don't e.g. confuse the operator '-' with '->'.  It's
		       ;; ok if it matches further, though, since it e.g. can
		       ;; match the float '.5' while the operator regexp only
		       ;; matches '.'.
		       (or (not (looking-at c-nonsymbol-token-regexp))
			   (<= (match-end 0) pos))))

		;; There should either be a cast before it or something that
		;; isn't an identifier or close paren.
		(/= match-pos 0)
		(progn
		  (goto-char (1- match-pos))
		  (or (eq (point) last-cast-end)
		      (progn
			(c-backward-syntactic-ws)
			(if (< (skip-syntax-backward "w_") 0)
			    ;; It's a symbol.  Accept it only if it's one of
			    ;; the keywords that can precede an expression
			    ;; (without surrounding parens).
			    (looking-at c-simple-stmt-key)
			  (and
			   ;; Check that it isn't a close paren (block close
			   ;; is ok, though).
			   (not (memq (char-before) '(?\) ?\])))
			   ;; Check that it isn't a nonsymbol identifier.
			   (not (c-on-identifier)))))))))

	     ;; Handle the cast.
	     (setq last-cast-end cast-end)
	     (when (and at-type (not (eq at-type t)))
	       (let ((c-promote-possible-types t))
		 (goto-char type-start)
		 (c-forward-type))))

	    (at-decl-or-cast
	     ;; We're at a declaration.  Highlight the type and the following
	     ;; declarators.

	     (when backup-if-not-cast
	       (c-fl-shift-type-backward t))

	     (when (and (eq arglist-type 'decl) (looking-at ","))
	       ;; Make sure to propagate the `c-decl-arg-start' property to
	       ;; the next argument if it's set in this one, to cope with
	       ;; interactive refontification.
	       (c-put-char-property (point) 'c-type 'c-decl-arg-start))

	     ;; Set `max-type-decl-end' or `max-type-decl-end-before-token'
	     ;; under the assumption that we're after the first type decl
	     ;; expression in the declaration now.  That's not really true; we
	     ;; could also be after a parenthesized initializer expression in
	     ;; C++, but this is only used as a last resort to slant ambiguous
	     ;; expression/declarations, and overall it's worth the risk to
	     ;; occasionally fontify an expression as a declaration in an
	     ;; initializer expression compared to getting ambiguous things in
	     ;; normal function prototypes fontified as expressions.
	     (if inside-macro
		 (when (> (point) max-type-decl-end-before-token)
		   (setq max-type-decl-end-before-token (point)))
	       (when (> (point) max-type-decl-end)
		 (setq max-type-decl-end (point))))

	     (when (and at-type (not (eq at-type t)))
	       (let ((c-promote-possible-types t))
		 (goto-char type-start)
		 (c-forward-type)))

	     (goto-char type-end)

	     (let ((decl-list
		    (if arglist-type
			;; Should normally not fontify a list of declarators
			;; inside an arglist, but the first argument in the
			;; ';' separated list of a "for" statement is an
			;; exception.
			(when (and (eq arglist-match ?\() (/= match-pos 0))
			  (save-excursion
			    (goto-char (1- match-pos))
			    (c-backward-syntactic-ws)
			    (and (c-simple-skip-symbol-backward)
				 (looking-at c-paren-stmt-key))))
		      t)))

	       ;; Fix the `c-decl-id-start' or `c-decl-type-start' property
	       ;; before the first declarator if it's a list.
	       ;; `c-font-lock-declarators' handles the rest.
	       (when decl-list
		 (save-excursion
		   (c-backward-syntactic-ws)
		   (unless (bobp)
		     (c-put-char-property (1- (point)) 'c-type
					  (if at-typedef
					      'c-decl-type-start
					    'c-decl-id-start)))))

	       (c-font-lock-declarators (point-max) decl-list at-typedef)))

	    (t
	     ;; False alarm.  Skip the fontification done below.
	     (throw 'false-alarm t)))

	   ;; A cast or declaration has been successfully identified, so do
	   ;; all the fontification of types and refs that's been recorded by
	   ;; the calls to `c-forward-type' and `c-forward-name' above.
	   (c-fontify-recorded-types-and-refs)
	   nil)))

      nil)))

(c-lang-defconst c-simple-decl-matchers
  "Simple font lock matchers for types and declarations.  These are used
on level 2 only and so aren't combined with `c-complex-decl-matchers'."

  t `(;; Objective-C methods.
      ,@(when (c-major-mode-is 'objc-mode)
	  `((,(c-lang-const c-opt-method-key)
	     (,(byte-compile
		(lambda (limit)
		  (let (;; The font-lock package in Emacs is known to clobber
			;; `parse-sexp-lookup-properties' (when it exists).
			(parse-sexp-lookup-properties
			 (cc-eval-when-compile
			   (boundp 'parse-sexp-lookup-properties))))
		    (save-restriction
		      (narrow-to-region (point-min) limit)
		      (c-font-lock-objc-method)))
		  nil))
	      (goto-char (match-end 1))))))

      ;; Fontify all type names and the identifiers in the
      ;; declarations they might start.  Use eval here since
      ;; `c-known-type-key' gets its value from
      ;; `*-font-lock-extra-types' on mode init.
      (eval . (list ,(c-make-font-lock-search-function
		      'c-known-type-key
		      '(1 'font-lock-type-face t)
		      '((c-font-lock-declarators limit t nil)
			(save-match-data
			  (goto-char (match-end 1))
			  (c-forward-syntactic-ws))
			(goto-char (match-end 1))))))

      ;; Fontify types preceded by `c-type-prefix-kwds' and the
      ;; identifiers in the declarations they might start.
      ,@(when (c-lang-const c-type-prefix-kwds)
	  (let ((prefix-re (c-make-keywords-re nil
			     (c-lang-const c-type-prefix-kwds))))
	    `((,(c-make-font-lock-search-function
		 (concat "\\<\\(" prefix-re "\\)"
			 "[ \t\n\r\f\v]+"
			 "\\(" (c-lang-const c-symbol-key) "\\)")
		 `(,(+ (c-regexp-opt-depth prefix-re) 2)
		   'font-lock-type-face t)
		 '((c-font-lock-declarators limit t nil)
		   (save-match-data
		     (goto-char (match-end 2))
		     (c-forward-syntactic-ws))
		   (goto-char (match-end 2))))))))

      ;; Fontify special declarations that lacks a type.
      ,@(when (c-lang-const c-typeless-decl-kwds)
	  `((,(c-make-font-lock-search-function
	       (concat "\\<\\("
		       (c-regexp-opt (c-lang-const c-typeless-decl-kwds))
		       "\\)\\>")
	       '((c-font-lock-declarators limit t nil)
		 (save-match-data
		   (goto-char (match-end 1))
		   (c-forward-syntactic-ws))
		 (goto-char (match-end 1)))))))
      ))

(c-lang-defconst c-complex-decl-matchers
  "Complex font lock matchers for types and declarations.  Used on level
3 and higher."

  t `(;; Initialize some things before the search functions below.
      c-font-lock-complex-decl-prepare

      ;; Fontify angle bracket arglists like templates in C++.
      ,@(when (c-lang-const c-recognize-<>-arglists)
	  `(c-font-lock-<>-arglists))

      ,@(if (c-major-mode-is 'objc-mode)
	    ;; Fontify method declarations in Objective-C, but first
	    ;; we have to put the `c-decl-end' `c-type' property on
	    ;; all the @-style directives that haven't been handled in
	    ;; `c-basic-matchers-before'.
	    `(,(c-make-font-lock-search-function
		(c-make-keywords-re t
		  ;; Exclude "@class" since that directive ends with a
		  ;; semicolon anyway.
		  (delete "@class"
			  (append (c-lang-const c-protection-kwds)
				  (c-lang-const c-other-decl-kwds)
				  nil)))
		'((c-put-char-property (1- (match-end 1))
				       'c-type 'c-decl-end)))

	      c-font-lock-objc-methods)

	  (when (c-lang-const c-opt-access-key)
	    `(,(c-make-font-lock-search-function
		(c-lang-const c-opt-access-key)
		'((c-put-char-property (1- (match-end 0))
				       'c-type 'c-decl-end))))))

      ;; Fontify all declarations and casts.
      c-font-lock-declarations

      ;; The first two rules here mostly find occurences that
      ;; `c-font-lock-declarations' has found already, but not
      ;; declarations containing blocks in the type (see note below).
      ;; It's also useful to fontify these everywhere to show e.g. when
      ;; a type keyword is accidentally used as an identifier.

      ;; Fontify basic types.
      ,(let ((re (c-make-keywords-re nil
		   (c-lang-const c-primitive-type-kwds))))
	 (if (c-major-mode-is 'pike-mode)
	     ;; No symbol is a keyword after "->" in Pike.
	     `(,(concat "\\(\\=\\|\\(\\=\\|[^-]\\)[^>]\\)"
			"\\<\\(" re "\\)\\>")
	       3 font-lock-type-face)
	   `(,(concat "\\<\\(" re "\\)\\>")
	     1 'font-lock-type-face)))

      ;; Fontify types preceded by `c-type-prefix-kwds'.
      ,@(when (c-lang-const c-type-prefix-kwds)
	  `((,(byte-compile
	       `(lambda (limit)
		  (c-fontify-types-and-refs
		      ((c-promote-possible-types t)
		       ;; The font-lock package in Emacs is known to clobber
		       ;; `parse-sexp-lookup-properties' (when it exists).
		       (parse-sexp-lookup-properties
			(cc-eval-when-compile
			  (boundp 'parse-sexp-lookup-properties))))
		    (save-restriction
		      ;; Narrow to avoid going past the limit in
		      ;; `c-forward-type'.
		      (narrow-to-region (point) limit)
		      (while (re-search-forward
			      ,(concat "\\<\\("
				       (c-make-keywords-re nil
					 (c-lang-const c-type-prefix-kwds))
				       "\\)\\>")
			      limit t)
			(unless (c-skip-comments-and-strings limit)
			  (c-forward-syntactic-ws)
			  ;; Handle prefix declaration specifiers.
			  (when (looking-at c-specifier-key)
			    (c-forward-keyword-clause))
			  ,(if (c-major-mode-is 'c++-mode)
			       `(when (and (c-forward-type)
					   (eq (char-after) ?=))
				  ;; In C++ we additionally check for a "class
				  ;; X = Y" construct which is used in
				  ;; templates, to fontify Y as a type.
				  (forward-char)
				  (c-forward-syntactic-ws)
				  (c-forward-type))
			     `(c-forward-type))
			  )))))))))

      ;; Fontify symbols after closing braces as declaration
      ;; identifiers under the assumption that they are part of
      ;; declarations like "class Foo { ... } foo;".  It's too
      ;; expensive to check this accurately by skipping past the
      ;; brace block, so we use the heuristic that it's such a
      ;; declaration if the first identifier is on the same line as
      ;; the closing brace.  `c-font-lock-declarations' will later
      ;; override it if it turns out to be an new declaration, but
      ;; it will be wrong if it's an expression (see the test
      ;; decls-8.cc).
      ,@(when (c-lang-const c-opt-block-decls-with-vars-key)
	  `((,(c-make-font-lock-search-function
	       (concat "}"
		       (c-lang-const c-single-line-syntactic-ws)
		       "\\("		; 1 + c-single-line-syntactic-ws-depth
		       (c-lang-const c-type-decl-prefix-key)
		       "\\|"
		       (c-lang-const c-symbol-key)
		       "\\)")
	       `((c-font-lock-declarators limit t nil)
		 (progn
		   (c-put-char-property (match-beginning 0) 'c-type
					'c-decl-id-start)
		   (goto-char (match-beginning
			       ,(1+ (c-lang-const
				     c-single-line-syntactic-ws-depth)))))
		 (goto-char (match-end 0)))))))

      ;; Fontify the type in C++ "new" expressions.
      ,@(when (c-major-mode-is 'c++-mode)
	  `(("\\<new\\>"
	     (c-font-lock-c++-new))))
      ))

(defun c-font-lock-labels (limit)
  ;; Fontify all the declarations from the point to LIMIT.  Assumes
  ;; that strings and comments have been fontified already.  Nil is
  ;; always returned.
  ;;
  ;; This function can make hidden buffer changes, but the font-lock
  ;; context covers that.

  (let (continue-pos id-start
	;; The font-lock package in Emacs is known to clobber
	;; `parse-sexp-lookup-properties' (when it exists).
	(parse-sexp-lookup-properties
	 (cc-eval-when-compile
	   (boundp 'parse-sexp-lookup-properties))))

    (while (re-search-forward ":[^:]" limit t)
      (setq continue-pos (point))
      (goto-char (match-beginning 0))
      (unless (c-skip-comments-and-strings limit)

	(c-backward-syntactic-ws)
	(and (setq id-start (c-on-identifier))

	     (not (get-text-property id-start 'face))

	     (progn
	       (goto-char id-start)
	       (c-backward-syntactic-ws)
	       (or
		;; Check for a char that precedes a statement.
		(memq (char-before) '(?\} ?\{ ?\;))
		;; Check for a preceding label.  We exploit the font
		;; locking made earlier by this function.
		(and (eq (char-before) ?:)
		     (progn
		       (backward-char)
		       (c-backward-syntactic-ws)
		       (not (bobp)))
		     (eq (get-text-property (1- (point)) 'face)
			 c-label-face-name))
		;; Check for a keyword that precedes a statement.
		(c-after-conditional)))

	     (progn
	       ;; Got a label.
	       (goto-char id-start)
	       (looking-at c-symbol-key)
	       (c-put-font-lock-face (match-beginning 0) (match-end 0)
				     c-label-face-name)))

	(goto-char continue-pos))))
  nil)

(c-lang-defconst c-basic-matchers-after
  "Font lock matchers for various things that should be fontified after
generic casts and declarations are fontified.  Used on level 2 and
higher."

  t `(;; Fontify the identifiers inside enum lists.  (The enum type
      ;; name is handled by `c-simple-decl-matchers' or
      ;; `c-complex-decl-matchers' below.
      ,@(when (c-lang-const c-brace-id-list-kwds)
	  `((,(c-make-font-lock-search-function
	       (concat
		"\\<\\("
		(c-make-keywords-re nil (c-lang-const c-brace-id-list-kwds))
		"\\)\\>"
		;; Disallow various common punctuation chars that can't come
		;; before the '{' of the enum list, to avoid searching too far.
		"[^\]\[{}();,/#=]*"
		"{")
	       '((c-font-lock-declarators limit t nil)
		 (save-match-data
		   (goto-char (match-end 0))
		   (c-put-char-property (1- (point)) 'c-type
					'c-decl-id-start)
		   (c-forward-syntactic-ws))
		 (goto-char (match-end 0)))))))

      ;; Fontify labels in languages that supports them.
      ,@(when (c-lang-const c-label-key)

	  `(;; Fontify labels after goto etc.
	    ;; (Got three different interpretation levels here,
	    ;; which makes it a bit complicated: 1) The backquote
	    ;; stuff is expanded when compiled or loaded, 2) the
	    ;; eval form is evaluated at font-lock setup (to
	    ;; substitute c-label-face-name correctly), and 3) the
	    ;; resulting structure is interpreted during
	    ;; fontification.)
	    (eval
	     . ,(let* ((c-before-label-re
			(c-make-keywords-re nil
			  (c-lang-const c-before-label-kwds))))
		  `(list
		    ,(concat "\\<\\(" c-before-label-re "\\)\\>"
			     "\\s *"
			     "\\("	; identifier-offset
			     (c-lang-const c-symbol-key)
			     "\\)")
		    (list ,(+ (c-regexp-opt-depth c-before-label-re) 2)
			  c-label-face-name nil t))))

	    ;; Fontify normal labels.
	    c-font-lock-labels))

      ;; Fontify the clauses after various keywords.
      ,@(when (or (c-lang-const c-type-list-kwds)
		  (c-lang-const c-ref-list-kwds)
		  (c-lang-const c-colon-type-list-kwds)
		  (c-lang-const c-paren-type-kwds))
	  `((,(c-make-font-lock-search-function
	       (concat "\\<\\("
		       (c-make-keywords-re nil
			 (append (c-lang-const c-type-list-kwds)
				 (c-lang-const c-ref-list-kwds)
				 (c-lang-const c-colon-type-list-kwds)
				 (c-lang-const c-paren-type-kwds)))
		       "\\)\\>")
	       '((c-fontify-types-and-refs ((c-promote-possible-types t))
		   (c-forward-keyword-clause)
		   (if (> (point) limit) (goto-char limit))))))))
      ))

(c-lang-defconst c-matchers-1
  t (c-lang-const c-cpp-matchers))

(c-lang-defconst c-matchers-2
  t (append (c-lang-const c-matchers-1)
	    (c-lang-const c-basic-matchers-before)
	    (c-lang-const c-simple-decl-matchers)
	    (c-lang-const c-basic-matchers-after)))

(c-lang-defconst c-matchers-3
  t (append (c-lang-const c-matchers-1)
	    (c-lang-const c-basic-matchers-before)
	    (c-lang-const c-complex-decl-matchers)
	    (c-lang-const c-basic-matchers-after)))

(defun c-compose-keywords-list (base-list)
  ;; Incorporate the font lock keyword lists according to
  ;; `c-doc-comment-style' on the given keyword list and return it.
  ;; This is used in the function bindings of the
  ;; `*-font-lock-keywords-*' symbols since we have to build the list
  ;; when font-lock is initialized.

  (unless (memq c-doc-face-name c-literal-faces)
    (setq c-literal-faces (cons c-doc-face-name c-literal-faces)))

  (let* ((doc-keywords
	  (if (consp (car-safe c-doc-comment-style))
	      (cdr-safe (or (assq c-buffer-is-cc-mode c-doc-comment-style)
			    (assq 'other c-doc-comment-style)))
	    c-doc-comment-style))
	 (list (nconc (apply 'nconc
			     (mapcar
			      (lambda (doc-style)
				(let ((sym (intern
					    (concat (symbol-name doc-style)
						    "-font-lock-keywords"))))
				  (cond ((fboundp sym)
					 (funcall sym))
					((boundp sym)
					 (append (eval sym) nil)))))
			      (if (listp doc-keywords)
				  doc-keywords
				(list doc-keywords))))
		      base-list)))

    ;; Kludge: If `c-font-lock-complex-decl-prepare' is on the list we
    ;; move it first since the doc comment font lockers might add
    ;; `c-type' text properties, so they have to be cleared before that.
    (when (memq 'c-font-lock-complex-decl-prepare list)
      (setq list (cons 'c-font-lock-complex-decl-prepare
		       (delq 'c-font-lock-complex-decl-prepare
			     (append list nil)))))

    list))

(defun c-override-default-keywords (def-var)
  ;; This is used to override the value on a `*-font-lock-keywords'
  ;; variable only if it's nil or has the same value as one of the
  ;; `*-font-lock-keywords-*' variables.  Older font-lock packages
  ;; define a default value for `*-font-lock-keywords' which we want
  ;; to override, but we should otoh avoid clobbering a user setting.
  ;; This heuristic for that isn't perfect, but I can't think of any
  ;; better. /mast
  ;;
  ;; This function does not do any hidden buffer changes.
  (when (and (boundp def-var)
	     (memq (symbol-value def-var)
		   (cons nil
			 (mapcar
			  (lambda (suffix)
			    (let ((sym (intern (concat (symbol-name def-var)
						       suffix))))
			      (and (boundp sym) (symbol-value sym))))
			  '("-1" "-2" "-3")))))
    ;; The overriding is done by unbinding the variable so that the normal
    ;; defvar will install its default value later on.
    (makunbound def-var)))


;;; C.

(c-override-default-keywords 'c-font-lock-keywords)

(defconst c-font-lock-keywords-1 (c-lang-const c-matchers-1 c)
  "Minimal font locking for C mode.
Fontifies only preprocessor directives (in addition to the syntactic
fontification of strings and comments).")

(defconst c-font-lock-keywords-2 (c-lang-const c-matchers-2 c)
  "Fast normal font locking for C mode.
In addition to `c-font-lock-keywords-1', this adds fontification of
keywords, simple types, declarations that are easy to recognize, the
user defined types on `c-font-lock-extra-types', and the doc comment
styles specified by `c-doc-comment-style'.")

(defconst c-font-lock-keywords-3 (c-lang-const c-matchers-3 c)
  "Accurate normal font locking for C mode.
Like `c-font-lock-keywords-2' but detects declarations in a more
accurate way that works in most cases for arbitrary types without the
need for `c-font-lock-extra-types'.")

(defvar c-font-lock-keywords c-font-lock-keywords-3
  "Default expressions to highlight in C mode.")

(defun c-font-lock-keywords-2 ()
  (c-compose-keywords-list c-font-lock-keywords-2))
(defun c-font-lock-keywords-3 ()
  (c-compose-keywords-list c-font-lock-keywords-3))
(defun c-font-lock-keywords ()
  (c-compose-keywords-list c-font-lock-keywords))


;;; C++.

(defun c-font-lock-c++-new (limit)
  ;; Assuming point is after a "new" word, check that it isn't inside
  ;; a string or comment, and if so try to fontify the type in the
  ;; allocation expression.  Nil is always returned.
  ;;
  ;; As usual, C++ takes the prize in coming up with a hard to parse
  ;; syntax. :P

  (unless (c-skip-comments-and-strings limit)
    (save-excursion
      (catch 'false-alarm
	;; A "new" keyword is followed by one to three expressions, where
	;; the type is the middle one, and the only required part.
	(let (expr1-pos expr2-pos
	      ;; Enable recording of identifier ranges in `c-forward-type'
	      ;; etc for later fontification.  Not using
	      ;; `c-fontify-types-and-refs' here since the ranges should
	      ;; be fontified selectively only when an allocation
	      ;; expression is successfully recognized.
	      (c-record-type-identifiers t)
	      c-record-ref-identifiers
	      ;; The font-lock package in Emacs is known to clobber
	      ;; `parse-sexp-lookup-properties' (when it exists).
	      (parse-sexp-lookup-properties
	       (cc-eval-when-compile
		 (boundp 'parse-sexp-lookup-properties))))
	  (c-forward-syntactic-ws)

	  ;; The first placement arglist is always parenthesized, if it
	  ;; exists.
	  (when (eq (char-after) ?\()
	    (setq expr1-pos (1+ (point)))
	    (condition-case nil
		(c-forward-sexp)
	      (scan-error (throw 'false-alarm t)))
	    (c-forward-syntactic-ws))

	  ;; The second expression is either a type followed by some "*" or
	  ;; "[...]" or similar, or a parenthesized type followed by a full
	  ;; identifierless declarator.
	  (setq expr2-pos (1+ (point)))
	  (cond ((eq (char-after) ?\())
		((let ((c-promote-possible-types t))
		   (c-forward-type)))
		(t (setq expr2-pos nil)))

	  (when expr1-pos
	    (cond
	     ((not expr2-pos)
	      ;; No second expression, so the first has to be a
	      ;; parenthesized type.
	      (goto-char expr1-pos)
	      (let ((c-promote-possible-types t))
		(c-forward-type)))

	     ((eq (char-before expr2-pos) ?\()
	      ;; Got two parenthesized expressions, so we have to look
	      ;; closer at them to decide which is the type.  No need to
	      ;; handle `c-record-ref-identifiers' since all references
	      ;; has already been handled by other fontification rules.
	      (let (expr1-res expr2-res)

		(goto-char expr1-pos)
		(when (setq expr1-res (c-forward-type))
		  (unless (looking-at
			   (cc-eval-when-compile
			     (concat (c-lang-const c-symbol-start c++)
				     "\\|[*:\)\[]")))
		    ;; There's something after the would-be type that
		    ;; can't be there, so this is a placement arglist.
		    (setq expr1-res nil)))

		(goto-char expr2-pos)
		(when (setq expr2-res (c-forward-type))
		  (unless (looking-at
			   (cc-eval-when-compile
			     (concat (c-lang-const c-symbol-start c++)
				     "\\|[*:\)\[]")))
		    ;; There's something after the would-be type that can't
		    ;; be there, so this is an initialization expression.
		    (setq expr2-res nil))
		  (when (and (c-go-up-list-forward)
			     (progn (c-forward-syntactic-ws)
				    (eq (char-after) ?\()))
		    ;; If there's a third initialization expression
		    ;; then the second one is the type, so demote the
		    ;; first match.
		    (setq expr1-res nil)))

		;; We fontify the most likely type, with a preference for
		;; the first argument since a placement arglist is more
		;; unusual than an initializer.
		(cond ((memq expr1-res '(t known prefix)))
		      ((memq expr2-res '(t known prefix)))
		      ((eq expr1-res 'found)
		       (let ((c-promote-possible-types t))
			 (goto-char expr1-pos)
			 (c-forward-type)))
		      ((eq expr2-res 'found)
		       (let ((c-promote-possible-types t))
			 (goto-char expr2-pos)
			 (c-forward-type)))
		      ((and (eq expr1-res 'maybe) (not expr2-res))
		       (let ((c-promote-possible-types t))
			 (goto-char expr1-pos)
			 (c-forward-type)))
		      ((and (not expr1-res) (eq expr2-res 'maybe))
		       (let ((c-promote-possible-types t))
			 (goto-char expr2-pos)
			 (c-forward-type)))
		      ;; If both type matches are 'maybe then we're
		      ;; too uncertain to promote either of them.
		      )))))

	  ;; Fontify the type that now is recorded in
	  ;; `c-record-type-identifiers', if any.
	  (c-fontify-recorded-types-and-refs)))))
  nil)

(c-override-default-keywords 'c++-font-lock-keywords)

(defconst c++-font-lock-keywords-1 (c-lang-const c-matchers-1 c++)
  "Minimal font locking for C++ mode.
Fontifies only preprocessor directives (in addition to the syntactic
fontification of strings and comments).")

(defconst c++-font-lock-keywords-2 (c-lang-const c-matchers-2 c++)
  "Fast normal font locking for C++ mode.
In addition to `c++-font-lock-keywords-1', this adds fontification of
keywords, simple types, declarations that are easy to recognize, the
user defined types on `c++-font-lock-extra-types', and the doc comment
styles specified by `c-doc-comment-style'.")

(defconst c++-font-lock-keywords-3 (c-lang-const c-matchers-3 c++)
  "Accurate normal font locking for C++ mode.
Like `c++-font-lock-keywords-2' but detects declarations in a more
accurate way that works in most cases for arbitrary types without the
need for `c++-font-lock-extra-types'.")

(defvar c++-font-lock-keywords c++-font-lock-keywords-3
  "Default expressions to highlight in C++ mode.")

(defun c++-font-lock-keywords-2 ()
  (c-compose-keywords-list c++-font-lock-keywords-2))
(defun c++-font-lock-keywords-3 ()
  (c-compose-keywords-list c++-font-lock-keywords-3))
(defun c++-font-lock-keywords ()
  (c-compose-keywords-list c++-font-lock-keywords))


;;; Objective-C.

(defun c-font-lock-objc-iip-decl ()
  ;; Assuming the point is after an "@interface", "@implementation",
  ;; "@protocol" declaration, fontify all the types in the directive.
  ;; Return t if the directive was fully recognized.  Point will then
  ;; be at the end of it.

  (c-fontify-types-and-refs
      (start-char
       (c-promote-possible-types t)
       ;; Turn off recognition of angle bracket arglists while parsing
       ;; types here since the protocol reference list might then be
       ;; considered part of the preceding name or superclass-name.
       c-recognize-<>-arglists)
    (catch 'break

      ;; Handle the name of the class itself.
      (c-forward-syntactic-ws)
      (unless (c-forward-type) (throw 'break nil))

      ;; Look for ": superclass-name" or "( category-name )".
      (when (looking-at "[:\(]")
	(setq start-char (char-after))
	(forward-char)
	(c-forward-syntactic-ws)
	(unless (c-forward-type) (throw 'break nil))
	(when (eq start-char ?\()
	  (unless (eq (char-after) ?\)) (throw 'break nil))
	  (forward-char)
	  (c-forward-syntactic-ws)))

      ;; Look for a protocol reference list.
      (when (if (eq (char-after) ?<)
		(progn
		  (setq c-recognize-<>-arglists t)
		  (c-forward-<>-arglist t t))
	      t)
	(c-put-char-property (1- (point)) 'c-type 'c-decl-end)
	t))))

(defun c-font-lock-objc-method ()
  ;; Assuming the point is after the + or - that starts an Objective-C
  ;; method declaration, fontify it.  This must be done before normal
  ;; casts, declarations and labels are fontified since they will get
  ;; false matches in these things.

  (c-fontify-types-and-refs
      ((first t)
       (c-promote-possible-types t))

    (while (and
	    (progn
	      (c-forward-syntactic-ws)

	      ;; An optional method type.
	      (if (eq (char-after) ?\()
		  (progn
		    (forward-char)
		    (c-forward-syntactic-ws)
		    (c-forward-type)
		    (prog1 (c-go-up-list-forward)
		      (c-forward-syntactic-ws)))
		t))

	    ;; The name.  The first time it's the first part of
	    ;; the function name, the rest of the time it's an
	    ;; argument name.
	    (looking-at c-symbol-key)
	    (progn
	      (goto-char (match-end 0))
	      (c-put-font-lock-face (match-beginning 0)
				    (point)
				    (if first
					'font-lock-function-name-face
				      'font-lock-variable-name-face))
	      (c-forward-syntactic-ws)

	      ;; Another optional part of the function name.
	      (when (looking-at c-symbol-key)
		(goto-char (match-end 0))
		(c-put-font-lock-face (match-beginning 0)
				      (point)
				      'font-lock-function-name-face)
		(c-forward-syntactic-ws))

	      ;; There's another argument if a colon follows.
	      (eq (char-after) ?:)))
      (forward-char)
      (setq first nil))))

(defun c-font-lock-objc-methods (limit)
  ;; Fontify method declarations in Objective-C.  Nil is always
  ;; returned.

  (let (;; The font-lock package in Emacs is known to clobber
	;; `parse-sexp-lookup-properties' (when it exists).
	(parse-sexp-lookup-properties
	 (cc-eval-when-compile
	   (boundp 'parse-sexp-lookup-properties))))

    (c-find-decl-spots
     limit
     "[-+]"
     nil
     (lambda (match-pos inside-macro)
       (forward-char)
       (c-font-lock-objc-method))))
  nil)

(c-override-default-keywords 'objc-font-lock-keywords)

(defconst objc-font-lock-keywords-1 (c-lang-const c-matchers-1 objc)
  "Minimal font locking for Objective-C mode.
Fontifies only compiler directives (in addition to the syntactic
fontification of strings and comments).")

(defconst objc-font-lock-keywords-2 (c-lang-const c-matchers-2 objc)
  "Fast normal font locking for Objective-C mode.
In addition to `objc-font-lock-keywords-1', this adds fontification of
keywords, simple types, declarations that are easy to recognize, the
user defined types on `objc-font-lock-extra-types', and the doc
comment styles specified by `c-doc-comment-style'.")

(defconst objc-font-lock-keywords-3 (c-lang-const c-matchers-3 objc)
  "Accurate normal font locking for Objective-C mode.
Like `objc-font-lock-keywords-2' but detects declarations in a more
accurate way that works in most cases for arbitrary types without the
need for `objc-font-lock-extra-types'.")

(defvar objc-font-lock-keywords objc-font-lock-keywords-3
  "Default expressions to highlight in Objective-C mode.")

(defun objc-font-lock-keywords-2 ()
  (c-compose-keywords-list objc-font-lock-keywords-2))
(defun objc-font-lock-keywords-3 ()
  (c-compose-keywords-list objc-font-lock-keywords-3))
(defun objc-font-lock-keywords ()
  (c-compose-keywords-list objc-font-lock-keywords))

;; Kludge to override the default value that
;; `objc-font-lock-extra-types' might have gotten from the font-lock
;; package.  The value replaced here isn't relevant now anyway since
;; those types are builtin and therefore listed directly in
;; `c-primitive-type-kwds'.
(when (equal (sort (append objc-font-lock-extra-types nil) 'string-lessp)
	     '("BOOL" "Class" "IMP" "SEL"))
  (setq objc-font-lock-extra-types
	(cc-eval-when-compile (list (concat "[" c-upper "]\\sw*")))))


;;; Java.

(c-override-default-keywords 'java-font-lock-keywords)

(defconst java-font-lock-keywords-1 (c-lang-const c-matchers-1 java)
  "Minimal font locking for Java mode.
Fontifies nothing except the syntactic fontification of strings and
comments.")

(defconst java-font-lock-keywords-2 (c-lang-const c-matchers-2 java)
  "Fast normal font locking for Java mode.
In addition to `java-font-lock-keywords-1', this adds fontification of
keywords, simple types, declarations that are easy to recognize, the
user defined types on `java-font-lock-extra-types', and the doc
comment styles specified by `c-doc-comment-style'.")

(defconst java-font-lock-keywords-3 (c-lang-const c-matchers-3 java)
  "Accurate normal font locking for Java mode.
Like `java-font-lock-keywords-2' but detects declarations in a more
accurate way that works in most cases for arbitrary types without the
need for `java-font-lock-extra-types'.")

(defvar java-font-lock-keywords java-font-lock-keywords-3
  "Default expressions to highlight in Java mode.")

(defun java-font-lock-keywords-2 ()
  (c-compose-keywords-list java-font-lock-keywords-2))
(defun java-font-lock-keywords-3 ()
  (c-compose-keywords-list java-font-lock-keywords-3))
(defun java-font-lock-keywords ()
  (c-compose-keywords-list java-font-lock-keywords))


;;; CORBA IDL.

(c-override-default-keywords 'idl-font-lock-keywords)

(defconst idl-font-lock-keywords-1 (c-lang-const c-matchers-1 idl)
  "Minimal font locking for CORBA IDL mode.
Fontifies nothing except the syntactic fontification of strings and
comments.")

(defconst idl-font-lock-keywords-2 (c-lang-const c-matchers-2 idl)
  "Fast normal font locking for CORBA IDL mode.
In addition to `idl-font-lock-keywords-1', this adds fontification of
keywords, simple types, declarations that are easy to recognize, the
user defined types on `idl-font-lock-extra-types', and the doc comment
styles specified by `c-doc-comment-style'.")

(defconst idl-font-lock-keywords-3 (c-lang-const c-matchers-3 idl)
  "Accurate normal font locking for CORBA IDL mode.
Like `idl-font-lock-keywords-2' but detects declarations in a more
accurate way that works in most cases for arbitrary types without the
need for `idl-font-lock-extra-types'.")

(defvar idl-font-lock-keywords idl-font-lock-keywords-3
  "Default expressions to highlight in CORBA IDL mode.")

(defun idl-font-lock-keywords-2 ()
  (c-compose-keywords-list idl-font-lock-keywords-2))
(defun idl-font-lock-keywords-3 ()
  (c-compose-keywords-list idl-font-lock-keywords-3))
(defun idl-font-lock-keywords ()
  (c-compose-keywords-list idl-font-lock-keywords))


;;; Pike.

(c-override-default-keywords 'pike-font-lock-keywords)

(defconst pike-font-lock-keywords-1 (c-lang-const c-matchers-1 pike)
  "Minimal font locking for Pike mode.
Fontifies only preprocessor directives (in addition to the syntactic
fontification of strings and comments).")

(defconst pike-font-lock-keywords-2 (c-lang-const c-matchers-2 pike)
  "Fast normal font locking for Pike mode.
In addition to `pike-font-lock-keywords-1', this adds fontification of
keywords, simple types, declarations that are easy to recognize, the
user defined types on `pike-font-lock-extra-types', and the doc
comment styles specified by `c-doc-comment-style'.")

(defconst pike-font-lock-keywords-3 (c-lang-const c-matchers-3 pike)
  "Accurate normal font locking for Pike mode.
Like `pike-font-lock-keywords-2' but detects declarations in a more
accurate way that works in most cases for arbitrary types without the
need for `pike-font-lock-extra-types'.")

(defvar pike-font-lock-keywords pike-font-lock-keywords-3
  "Default expressions to highlight in Pike mode.")

(defun pike-font-lock-keywords-2 ()
  (c-compose-keywords-list pike-font-lock-keywords-2))
(defun pike-font-lock-keywords-3 ()
  (c-compose-keywords-list pike-font-lock-keywords-3))
(defun pike-font-lock-keywords ()
  (c-compose-keywords-list pike-font-lock-keywords))


;;; Doc comments.

(defun c-font-lock-doc-comments (prefix limit keywords)
  ;; Fontify the comments between the point and LIMIT whose start
  ;; matches PREFIX with `c-doc-face-name'.  Assumes comments have been
  ;; fontified with `font-lock-comment-face' already.  nil is always
  ;; returned.
  ;;
  ;; After the fontification of a matching comment, fontification
  ;; according to KEYWORDS is applied inside it.  It's a list like
  ;; `font-lock-keywords' except that anchored matches and eval
  ;; clauses aren't supported and that some abbreviated forms can't be
  ;; used.  The buffer is narrowed to the comment while KEYWORDS is
  ;; applied; leading comment starters are included but trailing
  ;; comment enders for block comment are not.
  ;;
  ;; Note that faces added through KEYWORDS should never replace the
  ;; existing `c-doc-face-name' face since the existence of that face
  ;; is used as a flag in other code to skip comments.

  (let (comment-beg region-beg)
    (if (eq (get-text-property (point) 'face)
	    'font-lock-comment-face)
	;; Handle the case when the fontified region starts inside a
	;; comment.
	(let ((range (c-literal-limits)))
	  (setq region-beg (point))
	  (when range
	    (goto-char (car range)))
	  (when (looking-at prefix)
	    (setq comment-beg (point)))))

    (while (or
	    comment-beg

	    ;; Search for the prefix until a match is found at the start
	    ;; of a comment.
	    (while (when (re-search-forward prefix limit t)
		     (setq comment-beg (match-beginning 0))
		     (or (not (c-got-face-at comment-beg
					     c-literal-faces))
			 (and (/= comment-beg (point-min))
			      (c-got-face-at (1- comment-beg)
					     c-literal-faces))))
	      (setq comment-beg nil))
	    (setq region-beg comment-beg))

      (if (eq (elt (parse-partial-sexp comment-beg (+ comment-beg 2)) 7) t)
	  ;; Collect a sequence of doc style line comments.
	  (progn
	    (goto-char comment-beg)
	    (while (and (progn
			  (c-forward-single-comment)
			  (skip-syntax-forward " ")
			  (< (point) limit))
			(looking-at prefix))))
	(goto-char comment-beg)
	(c-forward-single-comment))
      (if (> (point) limit) (goto-char limit))
      (setq comment-beg nil)

      (let ((region-end (point))
	    (keylist keywords) keyword matcher highlights)
	(c-put-font-lock-face region-beg region-end c-doc-face-name)
	(save-restriction
	  ;; Narrow to the doc comment.  Among other things, this
	  ;; helps by making "^" match at the start of the comment.
	  ;; Do not include a trailing block comment ender, though.
	  (and (> region-end (1+ region-beg))
	       (progn (goto-char region-end)
		      (backward-char 2)
		      (looking-at "\\*/"))
	       (setq region-end (point)))
	  (narrow-to-region region-beg region-end)

	  (while keylist
	    (setq keyword (car keylist)
		  keylist (cdr keylist)
		  matcher (car keyword))
	    (goto-char region-beg)
	    (while (if (stringp matcher)
		       (re-search-forward matcher region-end t)
		     (funcall matcher region-end))
	      (setq highlights (cdr keyword))
	      (if (consp (car highlights))
		  (while highlights
		    (font-lock-apply-highlight (car highlights))
		    (setq highlights (cdr highlights)))
		(font-lock-apply-highlight highlights))))

	  (goto-char region-end)))))
  nil)
(put 'c-font-lock-doc-comments 'lisp-indent-function 2)

(defun c-find-invalid-doc-markup (regexp limit)
  ;; Used to fontify invalid markup in doc comments after the correct
  ;; ones have been fontified: Find the first occurence of REGEXP
  ;; between the point and LIMIT that only is fontified with
  ;; `c-doc-face-name'.  If a match is found then submatch 0 surrounds
  ;; the first char and t is returned, otherwise nil is returned.
  (let (start)
    (while (if (re-search-forward regexp limit t)
	       (not (eq (get-text-property
			 (setq start (match-beginning 0)) 'face)
			c-doc-face-name))
	     (setq start nil)))
    (when start
      (store-match-data (list (copy-marker start)
			      (copy-marker (1+ start))))
      t)))

(defconst javadoc-font-lock-doc-comments
  `(("{@[a-z]+[^}\n\r]*}"		; "{@foo ...}" markup.
     0 ,c-doc-markup-face-name prepend nil)
    ("^\\(/\\*\\)?[ \t*]*\\(@[a-z]+\\)" ; "@foo ..." markup.
     2 ,c-doc-markup-face-name prepend nil)
    (,(concat "</?\\sw"			; HTML tags.
	      "\\("
	      (concat "\\sw\\|\\s \\|[=\n\r*.:]\\|"
		      "\"[^\"]*\"\\|'[^']*'")
	      "\\)*>")
     0 ,c-doc-markup-face-name prepend nil)
    ("&\\(\\sw\\|[.:]\\)+;"		; HTML entities.
     0 ,c-doc-markup-face-name prepend nil)
    ;; Fontify remaining markup characters as invalid.  Note
    ;; that the Javadoc spec is hazy about when "@" is
    ;; allowed in non-markup use.
    (,(lambda (limit)
	(c-find-invalid-doc-markup "[<>&]\\|{@" limit))
     0 ,c-invalid-face-name prepend nil)))

(defconst javadoc-font-lock-keywords
  `((,(lambda (limit)
	(c-font-lock-doc-comments "/\\*\\*" limit
	  javadoc-font-lock-doc-comments)))))

(defconst autodoc-decl-keywords
  ;; Adorned regexp matching the keywords that introduce declarations
  ;; in Pike Autodoc.
  (cc-eval-when-compile
    (c-make-keywords-re t '("@decl" "@elem" "@index" "@member") 'pike-mode)))

(defconst autodoc-decl-type-keywords
  ;; Adorned regexp matching the keywords that are followed by a type.
  (cc-eval-when-compile
    (c-make-keywords-re t '("@elem" "@member") 'pike-mode)))

(defun autodoc-font-lock-line-markup (limit)
  ;; Fontify all line oriented keywords between the point and LIMIT.
  ;; Nil is always returned.

  (let ((line-re (concat "^\\(\\(/\\*!\\|\\s *\\("
			 c-current-comment-prefix
			 "\\)\\)\\s *\\)@[A-Za-z_-]+\\(\\s \\|$\\)"))
	(markup-faces (list c-doc-markup-face-name c-doc-face-name)))

    (while (re-search-forward line-re limit t)
      (goto-char (match-end 1))

      (if (looking-at autodoc-decl-keywords)
	  (let* ((kwd-pos (point))
		 (start (match-end 1))
		 (pos start)
		 end)

	    (c-put-font-lock-face (point) pos markup-faces)

	    ;; Put a declaration end mark at the markup keyword and
	    ;; remove the faces from the rest of the line so that it
	    ;; gets refontified as a declaration later on by
	    ;; `c-font-lock-declarations'.
	    (c-put-char-property (1- pos) 'c-type 'c-decl-end)
	    (goto-char pos)
	    (while (progn
		     (end-of-line)
		     (setq end (point))
		     (and (eq (char-before) ?@)
			  (not (eobp))
			  (progn (forward-char)
				 (skip-chars-forward " \t")
				 (looking-at c-current-comment-prefix))))
	      (goto-char (match-end 0))
	      (c-remove-font-lock-face pos (1- end))
	      (c-put-font-lock-face (1- end) end markup-faces)
	      (setq pos (point)))

	    ;; Include the final newline in the removed area.  This
	    ;; has no visual effect but it avoids some tricky special
	    ;; cases in the testsuite wrt the differences in string
	    ;; fontification in Emacs vs XEmacs.
	    (c-remove-font-lock-face pos (min (1+ (point)) (point-max)))

	    ;; Must handle string literals explicitly inside the declaration.
	    (goto-char start)
	    (while (re-search-forward
		    "\"\\([^\\\"]\\|\\\\.\\)*\"\\|'\\([^\\']\\|\\\\.\\)*'"
		    end 'move)
	      (c-put-font-lock-string-face (match-beginning 0)
					   (point)))

	    ;; Fontify types after keywords that always are followed
	    ;; by them.
	    (goto-char kwd-pos)
	    (when (looking-at autodoc-decl-type-keywords)
	      (c-fontify-types-and-refs ((c-promote-possible-types t))
		(goto-char start)
		(c-forward-syntactic-ws)
		(c-forward-type))))

	;; Mark each whole line as markup, as long as the logical line
	;; continues.
	(while (progn
		 (c-put-font-lock-face (point)
				       (progn (end-of-line) (point))
				       markup-faces)
		 (and (eq (char-before) ?@)
		      (not (eobp))
		      (progn (forward-char)
			     (skip-chars-forward " \t")
			     (looking-at c-current-comment-prefix))))
	  (goto-char (match-end 0))))))

  nil)

(defconst autodoc-font-lock-doc-comments
  `(("@\\(\\w+{\\|\\[\\([^\]@\n\r]\\|@@\\)*\\]\\|[@}]\\|$\\)"
     ;; In-text markup.
     0 ,c-doc-markup-face-name prepend nil)
    (autodoc-font-lock-line-markup)
    ;; Fontify remaining markup characters as invalid.
    (,(lambda (limit)
	(c-find-invalid-doc-markup "@" limit))
     0 ,c-invalid-face-name prepend nil)
    ))

(defun autodoc-font-lock-keywords ()
  ;; Note that we depend on that `c-current-comment-prefix' has got
  ;; its proper value here.

  ;; The `c-type' text property with `c-decl-end' is used to mark the
  ;; end of the `autodoc-decl-keywords' occurrences to fontify the
  ;; following declarations.
  (setq c-type-decl-end-used t)

  `((,(lambda (limit)
	(c-font-lock-doc-comments "/[*/]!" limit
	  autodoc-font-lock-doc-comments)))))


;; AWK.

;; Awk regexps written with help from Peter Galbraith
;; <galbraith@mixing.qc.dfo.ca>.
;; Take GNU Emacs's 'words out of the following regexp-opts.  They dont work
;; in Xemacs 21.4.4.  acm 2002/9/19.
(eval-after-load "cc-awk"               ; Evaluate while loading cc-fonts
  `(defconst awk-font-lock-keywords     ; Evaluate after loading cc-awk
     ',(eval-when-compile               ; Evaluate while compiling cc-fonts
	 (list
	  ;; Function names.
	  '("^[ \t]*\\(func\\(tion\\)?\\)\\>[ \t]*\\(\\sw+\\)?"
	    (1 font-lock-keyword-face) (3 font-lock-function-name-face nil t))
	  ;;
	  ;; Variable names.
	  (cons
	   (concat "\\<"
		   (c-regexp-opt
		    '("ARGC" "ARGIND" "ARGV" "BINMODE" "CONVFMT" "ENVIRON"
		      "ERRNO" "FIELDWIDTHS" "FILENAME" "FNR" "FS" "IGNORECASE"
		      "LINT" "NF" "NR" "OFMT" "OFS" "ORS" "PROCINFO" "RLENGTH"
		      "RS" "RSTART" "RT" "SUBSEP" "TEXTDOMAIN") t) "\\>")
	   'font-lock-variable-name-face)

	  ;; Special file names.  (acm, 2002/7/22)
	  ;; The following regexp was created by first evaluating this in GNU Emacs 21.1:
	  ;; (c-regexp-opt '("/dev/stdin" "/dev/stdout" "/dev/stderr" "/dev/fd/n" "/dev/pid"
	  ;;                 "/dev/ppid" "/dev/pgrpid" "/dev/user") 'words)
	  ;; , removing the "?:" from each "\\(?:" (for backward compatibility with older Emacsen)
	  ;; , replacing the "n" in "dev/fd/n" with "[0-9]+"
	  ;; , removing the unwanted \\< at the beginning, and finally filling out the
	  ;; regexp so that a " must come before, and either a " or heuristic stuff after.
	  ;; The surrounding quotes are fontified along with the filename, since, semantically,
	  ;; they are an indivisible unit.
	  '("\\(\"/dev/\\(fd/[0-9]+\\|p\\(\\(\\(gr\\)?p\\)?id\\)\\|\
std\\(err\\|in\\|out\\)\\|user\\)\\)\\>\
\\(\\(\"\\)\\|\\([^\"/\n\r][^\"\n\r]*\\)?$\\)"
	    (1 font-lock-variable-name-face t)
	    (8 font-lock-variable-name-face t t))
	  ;; Do the same (almost) with
	  ;; (c-regexp-opt '("/inet/tcp/lport/rhost/rport" "/inet/udp/lport/rhost/rport"
	  ;;                 "/inet/raw/lport/rhost/rport") 'words)
	  ;; This cannot be combined with the above pattern, because the match number
	  ;; for the (optional) closing \" would then exceed 9.
	  '("\\(\"/inet/\\(\\(raw\\|\\(tc\\|ud\\)p\\)/lport/rhost/rport\\)\\)\\>\
\\(\\(\"\\)\\|\\([^\"/\n\r][^\"\n\r]*\\)?$\\)"
	    (1 font-lock-variable-name-face t)
	    (6 font-lock-variable-name-face t t))

	  ;; Keywords.
	  (concat "\\<"
		  (c-regexp-opt
		   '("BEGIN" "END" "break" "continue" "delete" "do" "else"
		     "exit" "for" "getline" "if" "in" "next" "nextfile"
		     "return" "while")
		   t) "\\>")

	  ;; Builtins.
	  `(eval . (list
		    ,(concat
		      "\\<"
		      (c-regexp-opt
		       '("adump" "and" "asort" "atan2" "bindtextdomain" "close"
			 "compl" "cos" "dcgettext" "exp" "extension" "fflush"
			 "gensub" "gsub" "index" "int" "length" "log" "lshift"
			 "match" "mktime" "or" "print" "printf" "rand" "rshift"
			 "sin" "split" "sprintf" "sqrt" "srand" "stopme"
			 "strftime" "strtonum" "sub" "substr"  "system"
			 "systime" "tolower" "toupper" "xor") t)
		      "\\>")
		    0 c-preprocessor-face-name))

	  ;; gawk debugging keywords.  (acm, 2002/7/21)
	  ;; (Removed, 2003/6/6.  These functions are now fontified as built-ins)
;;	(list (concat "\\<" (c-regexp-opt '("adump" "stopme") t) "\\>")
;;	   0 'font-lock-warning-face)

	  ;; User defined functions with an apparent spurious space before the
	  ;; opening parenthesis.  acm, 2002/5/30.
	  `(,(concat "\\(\\w\\|_\\)" c-awk-escaped-nls* "[ \t]"
		     c-awk-escaped-nls*-with-space* "(")
	    (0 'font-lock-warning-face))

	  ;; Space after \ in what looks like an escaped newline.  2002/5/31
	  '("\\\\[ \t]+$" 0 font-lock-warning-face t)

	  ;; Unbalanced string (") or regexp (/) delimiters.  2002/02/16.
	  '("\\s|" 0 font-lock-warning-face t nil)
	  ;; gawk 3.1 localizable strings ( _"translate me!").  2002/5/21
	  '("\\(_\\)\\s|" 1 font-lock-warning-face)
	  '("\\(_\\)\\s\"" 1 font-lock-string-face) ; FIXME! not for XEmacs. 2002/10/6
	  ))
     "Default expressions to highlight in AWK mode."))


(cc-provide 'cc-fonts)

;;; cc-fonts.el ends here
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