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emacs/lisp/progmodes/cc-fonts.el
Alan Mackenzie 8c0e35891e progmodes/cc-fonts.el (c-font-lock-declarations): 1: Whilst checking for 
declarators, disable knr checking to speed up for normal files.  2:
Refactor, replacing a sequence of nested if forms by a cond form.
2011-06-15 18:24:25 +00:00

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;;; cc-fonts.el --- font lock support for CC Mode
;; Copyright (C) 2002-2011 Free Software Foundation, Inc.
;; Authors: 2003- Alan Mackenzie
;; 2002- Martin Stjernholm
;; Maintainer: bug-cc-mode@gnu.org
;; Created: 07-Jan-2002
;; Keywords: c languages
;; Package: cc-mode
;; 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 3 of the License, 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Some comments on the use of faces:
;;
;; o `c-label-face-name' is either `font-lock-constant-face' (in
;; Emacs), 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).
;;
;; 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-method)
(cc-bytecomp-defun c-font-lock-invalid-string)
;; 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 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 some earlier versions of XEmacs 21.
'font-lock-constant-face
c-label-face-name))
(defconst c-reference-face-name
(with-no-warnings
(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, 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-negation-char-face-name
(if (c-face-name-p 'font-lock-negation-char-face)
;; Emacs 22 has a special face for negation chars.
'font-lock-negation-char-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
(copy-face oldface newface)
(cond ((fboundp 'face-inverse-video-p)
;; Emacs. 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)))))
(defvar c-annotation-face (make-face 'c-annotation-face)
"Face used to highlight annotations in java-mode and other modes that may wish to use it.")
(set-face-foreground 'c-annotation-face "blue")
(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.
;;
;; This function does a hidden buffer change.
(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'.
;;
;; This function does a hidden buffer change.
(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.
;;
;; This function does a hidden buffer change.
(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.
;;
;; This function does hidden buffer changes.
`(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)
(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.
;;
;; This function might do hidden buffer changes.
(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-syntactic-matcher (regexp)
;; Returns a byte compiled function suitable for use in place of a
;; regexp string in a `font-lock-keywords' matcher, except that
;; only matches outside comments and string literals count.
;;
;; 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.)
(byte-compile
`(lambda (limit)
(let (res)
(while (and (setq res (re-search-forward ,regexp limit t))
(progn
(goto-char (match-beginning 0))
(or (c-skip-comments-and-strings limit)
(progn
(goto-char (match-end 0))
nil)))))
res))))
(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 limit 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 more easily.
(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))))
(while (re-search-forward ,regexp limit t)
(unless (progn
(goto-char (match-beginning 0))
(c-skip-comments-and-strings limit))
(goto-char (match-end 0))
,@(mapcar
(lambda (highlight)
(if (integerp (car highlight))
(progn
(unless (eq (nth 2 highlight) t)
(error
"The override flag must currently be t 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)))
; (eval-after-load "edebug" ; 2006-07-09: def-edebug-spec is now in subr.el.
; '(progn
(def-edebug-spec c-fontify-types-and-refs let*)
(def-edebug-spec c-make-syntactic-matcher t)
;; If there are literal quoted or backquoted highlight specs in
;; the call to `c-make-font-lock-search-function' then let's
;; instrument the forms in them.
(def-edebug-spec c-make-font-lock-search-function
(form &rest &or ("quote" (&rest form)) ("`" (&rest form)) form)));))
(defun c-fontify-recorded-types-and-refs ()
;; Convert the ranges recorded on `c-record-type-identifiers' and
;; `c-record-ref-identifiers' to fontification.
;;
;; This function does hidden buffer changes.
(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 (regexp-opt-depth noncontinued-line-end))
(sws-depth (c-lang-const c-syntactic-ws-depth))
(nsws-depth (c-lang-const c-nonempty-syntactic-ws-depth)))
`(;; The stuff after #error and #warning is a message, so
;; fontify it as a string.
,@(when (c-lang-const c-cpp-message-directives)
(let* ((re (c-make-keywords-re 'appendable ; nil
(c-lang-const c-cpp-message-directives)))
(re-depth (regexp-opt-depth re)))
`((,(concat noncontinued-line-end
(c-lang-const c-opt-cpp-prefix)
re
"\\s +\\(.*\\)$")
,(+ ncle-depth re-depth 1) font-lock-string-face t))))
;; Fontify filenames in #include <...> as strings.
,@(when (c-lang-const c-cpp-include-directives)
(let* ((re (c-make-keywords-re nil
(c-lang-const c-cpp-include-directives)))
(re-depth (regexp-opt-depth re)))
`((,(concat noncontinued-line-end
(c-lang-const c-opt-cpp-prefix)
re
(c-lang-const c-syntactic-ws)
"\\(<[^>\n\r]*>?\\)")
(,(+ ncle-depth re-depth sws-depth 1)
font-lock-string-face)
;; Use an anchored matcher to put paren syntax
;; on the brackets.
(,(byte-compile
`(lambda (limit)
(let ((beg (match-beginning
,(+ ncle-depth re-depth sws-depth 1)))
(end (1- (match-end ,(+ ncle-depth re-depth
sws-depth 1)))))
(if (eq (char-after end) ?>)
(progn
(c-mark-<-as-paren beg)
(c-mark->-as-paren end))
;; (c-clear-char-property beg 'syntax-table)
(c-clear-char-property beg 'category)))
nil)))))))
;; #define.
,@(when (c-lang-const c-opt-cpp-macro-define)
`((,(c-make-font-lock-search-function
(concat
noncontinued-line-end
(c-lang-const c-opt-cpp-prefix)
(c-lang-const c-opt-cpp-macro-define)
(c-lang-const c-nonempty-syntactic-ws)
"\\(" (c-lang-const ; 1 + ncle + nsws
c-symbol-key) "\\)"
(concat "\\(" ; 2 + ncle + nsws + c-sym-key
;; Macro with arguments - a "function".
"\\(\(\\)" ; 3 + ncle + nsws + c-sym-key
"\\|"
;; Macro without arguments - a "variable".
"\\([^\(]\\|$\\)"
"\\)"))
`((if (match-beginning
,(+ 3 ncle-depth nsws-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 nsws-depth))
(match-end ,(+ 1 ncle-depth nsws-depth))
'font-lock-function-name-face)
(goto-char
(match-end
,(+ 3 ncle-depth nsws-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 nsws-depth))
(match-end ,(+ 1 ncle-depth nsws-depth))
'font-lock-variable-name-face)))))))
;; Fontify cpp function names in preprocessor
;; expressions in #if and #elif.
,@(when (and (c-lang-const c-cpp-expr-directives)
(c-lang-const c-cpp-expr-functions))
(let ((ced-re (c-make-keywords-re t
(c-lang-const c-cpp-expr-directives)))
(cef-re (c-make-keywords-re t
(c-lang-const c-cpp-expr-functions))))
`((,(c-make-font-lock-search-function
(concat noncontinued-line-end
(c-lang-const c-opt-cpp-prefix)
ced-re ; 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 ,cef-re 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)))
(eval . (list ,(c-make-syntactic-matcher
(concat noncontinued-line-end
(c-lang-const c-opt-cpp-prefix)
"if\\(n\\)def\\>"))
,(+ ncle-depth 1)
c-negation-char-face-name
'append))
)))
,@(when (c-major-mode-is 'pike-mode)
;; Recognize hashbangs in Pike.
`((eval . (list "\\`#![^\n\r]*"
0 c-preprocessor-face-name))))
;; Make hard spaces visible through an inverted `font-lock-warning-face'.
(eval . (list
"\240"
0 (progn
(unless (c-face-name-p 'c-nonbreakable-space-face)
(c-make-inverse-face 'font-lock-warning-face
'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 `font-lock-warning-face' if the string
;; decidedly isn't terminated properly.
;;
;; This function does hidden buffer changes.
(let ((start (1- (point))))
(save-excursion
(and (eq (elt (parse-partial-sexp start (c-point 'eol)) 8) start)
(if (integerp c-multiline-string-start-char)
;; There's no multiline string start char before the
;; string, so newlines aren't allowed.
(not (eq (char-before start) c-multiline-string-start-char))
;; Multiline strings are allowed anywhere if
;; c-multiline-string-start-char is t.
(not c-multiline-string-start-char))
(if c-string-escaped-newlines
;; There's no \ before the newline.
(not (eq (char-before (point)) ?\\))
;; Escaped newlines aren't supported.
t)
(c-put-font-lock-face start (1+ start) 'font-lock-warning-face)))))
(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 "\\)\\>")
2 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))
2 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)
(if (c-major-mode-is 'java-mode)
;; Java needs special treatment since "." is used both to
;; qualify names and in normal indexing. Here we look for
;; capital characters at the beginning of an identifier to
;; recognize the class. "*" is also recognized to cover
;; wildcard import declarations. All preceding dot separated
;; identifiers are taken as package names and therefore
;; fontified as references.
`(,(c-make-font-lock-search-function
;; Search for class identifiers preceded by ".". The
;; anchored matcher takes it from there.
(concat (c-lang-const c-opt-identifier-concat-key)
(c-lang-const c-simple-ws) "*"
(concat "\\("
"[" c-upper "]"
"[" (c-lang-const c-symbol-chars) "]*"
"\\|"
"\\*"
"\\)"))
`((let (id-end)
(goto-char (1+ (match-beginning 0)))
(while (and (eq (char-before) ?.)
(progn
(backward-char)
(c-backward-syntactic-ws)
(setq id-end (point))
(< (skip-chars-backward
,(c-lang-const c-symbol-chars)) 0))
(not (get-text-property (point) 'face)))
(c-put-font-lock-face (point) id-end
c-reference-face-name)
(c-backward-syntactic-ws)))
nil
(goto-char (match-end 0)))))
`((,(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 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
(c-lang-const c-simple-ws) "*"
(c-lang-const c-opt-identifier-concat-key)
(c-lang-const c-simple-ws) "*"
"\\)"
"\\("
(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.
,(c-make-font-lock-search-function
(concat "\\<"
(regexp-opt
'("@interface" "@implementation" "@protocol")
t)
"\\>")
'((c-fontify-types-and-refs
(;; 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-objc-directive)
nil)
(goto-char (match-beginning 0))))))
(eval . (list "\\(!\\)[^=]" 1 c-negation-char-face-name))
))
(defun c-font-lock-complex-decl-prepare (limit)
;; This function will be called from font-lock for a region bounded by POINT
;; and LIMIT, as though it were to identify a keyword for
;; font-lock-keyword-face. It always returns NIL to inhibit this and
;; prevent a repeat invocation. See elisp/lispref page "Search-based
;; Fontification".
;;
;; Called before any of the matchers in `c-complex-decl-matchers'.
;;
;; This function does hidden buffer changes.
;;(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 have gotten recognized as types in malformed code.
(when (bobp)
(c-clear-found-types))
;; Clear the c-type char properties which mark the region, to recalculate
;; them properly. The most interesting properties are those put on the
;; closest token before the region.
(save-excursion
(let ((pos (point)))
(c-backward-syntactic-ws)
(c-clear-char-properties
(if (and (not (bobp))
(memq (c-get-char-property (1- (point)) 'c-type)
'(c-decl-arg-start
c-decl-end
c-decl-id-start
c-decl-type-start)))
(1- (point))
pos)
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.
;; The declared identifiers are font-locked correctly as types, if
;; that is what they are.
(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)
;; This function will be called from font-lock for a region bounded by POINT
;; and LIMIT, as though it were to identify a keyword for
;; font-lock-keyword-face. It always returns NIL to inhibit this and
;; prevent a repeat invocation. See elisp/lispref page "Search-based
;; Fontification".
;;
;; Fontify types and references in names containing angle bracket
;; arglists from the point to LIMIT. Note that
;; `c-font-lock-declarations' already has handled many of them.
;;
;; This function might do hidden buffer changes.
(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-parse-and-markup-<>-arglists t)
c-restricted-<>-arglists
id-start id-end id-face 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
c-restricted-<>-arglists nil
id-face (get-text-property id-start 'face))
(if (cond
((eq id-face 'font-lock-type-face)
;; The identifier got the type face so it has already been
;; handled in `c-font-lock-declarations'.
nil)
((eq id-face 'font-lock-keyword-face)
(when (looking-at c-opt-<>-sexp-key)
;; There's a special keyword before the "<" that tells
;; that it's an angle bracket arglist.
(setq kwd-sym (c-keyword-sym (match-string 1)))))
(t
;; There's a normal identifier before the "<". If we're not in
;; a declaration context then we set `c-restricted-<>-arglists'
;; to avoid recognizing templates in function calls like "foo (a
;; < b, c > d)".
(c-backward-syntactic-ws)
(when (and (memq (char-before) '(?\( ?,))
(not (eq (get-text-property (1- (point)) 'c-type)
'c-decl-arg-start)))
(setq c-restricted-<>-arglists t))
t))
(progn
(goto-char (1- pos))
;; Check for comment/string both at the identifier and
;; at the "<".
(unless (c-skip-comments-and-strings limit)
(c-fontify-types-and-refs ()
(when (c-forward-<>-arglist (c-keyword-member
kwd-sym 'c-<>-type-kwds))
(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 the identifier it declares. (If TYPES is set, it does this via
;; the macro `c-fontify-types-and-refs'.)
;;
;; If LIST is non-nil, also fontify the ids in any following declarators in
;; a comma separated list (e.g. "foo" and "*bar" in "int foo = 17, *bar;");
;; additionally, mark the commas with c-type property 'c-decl-id-start or
;; 'c-decl-type-start (according to TYPES). Stop at LIMIT.
;;
;; If TYPES is non-nil, fontify all identifiers as types.
;;
;; Nil is always returned. The function leaves point at the delimiter after
;; the last declarator it processes.
;;
;; This function might do hidden buffer changes.
;;(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)))
;; The following `while' fontifies a single declarator id each time round.
;; It loops only when LIST is non-nil.
(while
;; Inside the following "condition form", we move forward over the
;; declarator's identifier up as far as any opening bracket (for array
;; size) or paren (for parameters of function-type) or brace (for
;; array/struct initialisation) or "=" or terminating delimiter
;; (e.g. "," or ";" or "}").
(and
pos
(< (point) limit)
;; The following form moves forward over the declarator's
;; identifier (and what precedes it), returning t. If there
;; wasn't one, it returns nil, terminating the `while'.
(let (got-identifier)
(setq paren-depth 0)
;; Skip over type decl prefix operators, one for each iteration
;; of the while. These are, e.g. "*" in "int *foo" or "(" and
;; "*" in "int (*foo) (void)" (Note similar code in
;; `c-forward-decl-or-cast-1'.)
(while (and (looking-at c-type-decl-prefix-key)
(if (and (c-major-mode-is 'c++-mode)
(match-beginning 3))
;; If the third 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 haven't passed the identifier 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. If closing
;; parens are missing, this form returns nil.
(or (= paren-depth 0)
(c-safe (goto-char (scan-lists (point) 1 paren-depth))))
(<= (point) limit)
;; Skip over any trailing bit, such as "__attribute__".
(progn
(when (looking-at c-decl-hangon-key)
(c-forward-keyword-clause 1))
(<= (point) limit))
;; Search syntactically to the end of the declarator (";",
;; ",", a closen paren, eob etc) or to the beginning of an
;; initializer or function prototype ("=" or "\\s\(").
;; Note that the open paren will match array specs in
;; square brackets, and we treat them as initializers too.
(c-syntactic-re-search-forward
"[;,]\\|\\s)\\|\\'\\|\\(=\\|\\s(\\)" limit t t))
(setq next-pos (match-beginning 0)
id-face (if (and (eq (char-after next-pos) ?\()
(let (c-last-identifier-range)
(save-excursion
(goto-char next-pos)
(c-at-toplevel-p))))
'font-lock-function-name-face
'font-lock-variable-name-face)
got-init (and (match-beginning 1)
(char-after (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) ; So as to terminate the enclosing `while' form.
(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) ; over the parameter list.
(c-forward-syntactic-ws limit)
(goto-char limit))) ; unbalanced parens
(got-init ; "=" sign OR opening "(", "[", or "{"
;; Skip an initializer expression. If we're at a '='
;; then accept a brace list directly after it to cope
;; with array initializers. Otherwise stop at braces
;; to avoid going past full function and class blocks.
(and (if (and (eq got-init ?=)
(= (c-forward-token-2 1 nil limit) 0)
(looking-at "{"))
(c-safe (c-forward-sexp) t) ; over { .... }
t)
;; FIXME: Should look for c-decl-end markers here;
;; we might go far into the following declarations
;; in e.g. ObjC mode (see e.g. methods-4.m).
(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)))))) ; acts to make the `while' form continue.
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))
(defun c-font-lock-declarations (limit)
;; Fontify all the declarations, casts and labels from the point to LIMIT.
;; Assumes that strings and comments have been fontified already.
;;
;; This function will be called from font-lock for a region bounded by POINT
;; and LIMIT, as though it were to identify a keyword for
;; font-lock-keyword-face. It always returns NIL to inhibit this and
;; prevent a repeat invocation. See elisp/lispref page "Search-based
;; Fontification".
;;
;; This function might do hidden buffer changes.
;;(message "c-font-lock-declarations search from %s to %s" (point) limit)
(save-restriction
(let (;; The position where `c-find-decl-spots' last stopped.
start-pos
;; o - 'decl if we're in an arglist containing declarations
;; (but if `c-recognize-paren-inits' is set it might also be
;; an initializer arglist);
;; o - '<> if the arglist is of angle bracket type;
;; o - 'arglist if it's some other arglist;
;; o - nil, if not in an arglist at all. This includes the
;; parenthesised condition which follows "if", "while", etc.
context
;; The position of the next token after the closing paren of
;; the last detected cast.
last-cast-end
;; The result from `c-forward-decl-or-cast-1'.
decl-or-cast
;; 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)
;; Set according to the context to direct the heuristics for
;; recognizing C++ templates.
c-restricted-<>-arglists
;; Turn on recording of identifier ranges in
;; `c-forward-decl-or-cast-1' and `c-forward-label' for
;; later fontification.
(c-record-type-identifiers t)
label-type
c-record-ref-identifiers
;; Make `c-forward-type' calls mark up template arglists if
;; it finds any. That's necessary so that we later will
;; stop inside them to fontify types there.
(c-parse-and-markup-<>-arglists 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))))
;; Below we fontify a whole declaration even when it crosses the limit,
;; to avoid gaps when jit/lazy-lock fontifies the file a block 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.
(if (<= 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-decl-start-re
c-font-lock-maybe-decl-faces
(lambda (match-pos inside-macro)
(setq start-pos (point))
(when
;; The result of the form below is true when we don't recognize a
;; declaration or cast.
(if (and (eq (get-text-property (point) 'face)
'font-lock-keyword-face)
(looking-at c-not-decl-init-keywords))
;; Don't do anything more if we're looking at a keyword that
;; can't start a declaration.
t
;; Set `context' and `c-restricted-<>-arglists'. Look for
;; "<" for the sake of C++-style template arglists.
;; Ignore "(" when it's part of a control flow construct
;; (e.g. "for (").
(let ((type (and (> match-pos (point-min))
(c-get-char-property (1- match-pos) 'c-type))))
(cond ((not (memq (char-before match-pos) '(?\( ?, ?\[ ?<)))
(setq context nil
c-restricted-<>-arglists nil))
;; A control flow expression
((and (eq (char-before match-pos) ?\()
(save-excursion
(goto-char match-pos)
(backward-char)
(c-backward-token-2)
(looking-at c-block-stmt-2-key)))
(setq context nil
c-restricted-<>-arglists t))
;; Near BOB.
((<= match-pos (point-min))
(setq context 'arglist
c-restricted-<>-arglists t))
;; Got a cached hit in a declaration arglist.
((eq type 'c-decl-arg-start)
(setq context 'decl
c-restricted-<>-arglists nil))
;; Inside an angle bracket arglist.
((or (eq type 'c-<>-arg-sep)
(eq (char-before match-pos) ?<))
(setq context '<>
c-restricted-<>-arglists nil))
;; Got a cached hit in some other type of arglist.
(type
(setq context 'arglist
c-restricted-<>-arglists t))
((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 context 'decl
c-restricted-<>-arglists nil)
;; 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 context 'arglist
c-restricted-<>-arglists t))))
;; Check we haven't missed a preceding "typedef".
(when (not (looking-at c-typedef-key))
(c-backward-syntactic-ws)
(c-backward-token-2)
(or (looking-at c-typedef-key)
(goto-char start-pos)))
;; Now analyze the construct.
(setq decl-or-cast (c-forward-decl-or-cast-1
match-pos context last-cast-end))
(cond
((eq decl-or-cast 'cast)
;; Save the position after the previous cast so we can feed
;; it to `c-forward-decl-or-cast-1' in the next round. That
;; helps it discover cast chains like "(a) (b) c".
(setq last-cast-end (point))
(c-fontify-recorded-types-and-refs)
nil)
(decl-or-cast
;; We've found a declaration.
;; 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))))
;; Back up to the type to fontify the declarator(s).
(goto-char (car decl-or-cast))
(let ((decl-list
(if context
;; 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 (eq (char-before match-pos) ?\()
(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 (cdr decl-or-cast)
'c-decl-type-start
'c-decl-id-start)))))
(c-font-lock-declarators
(point-max) decl-list (cdr decl-or-cast)))
;; A declaration has been successfully identified, so do all the
;; fontification of types and refs that've been recorded.
(c-fontify-recorded-types-and-refs)
nil)
(t
;; Are we at a declarator? Try to go back to the declaration
;; to check this. If we get there, check whether a "typedef"
;; is there, then fontify the declarators accordingly.
(let ((decl-search-lim (max (- (point) 50000) (point-min)))
paren-state bod-res encl-pos is-typedef
c-recognize-knr-p) ; Strictly speaking, bogus, but it
; speeds up lisp.h tremendously.
(save-excursion
(setq bod-res (car (c-beginning-of-decl-1 decl-search-lim)))
(if (and (eq bod-res 'same)
(progn
(c-backward-syntactic-ws)
(eq (char-before) ?\})))
(c-beginning-of-decl-1 decl-search-lim))
;; We're now putatively at the declaration.
(setq paren-state (c-parse-state))
;; At top level or inside a "{"?
(if (or (not (setq encl-pos
(c-most-enclosing-brace paren-state)))
(eq (char-after encl-pos) ?\{))
(progn
(when (looking-at c-typedef-key) ; "typedef"
(setq is-typedef t)
(goto-char (match-end 0))
(c-forward-syntactic-ws))
;; At a real declaration?
(if (memq (c-forward-type t) '(t known found))
(progn
(c-font-lock-declarators limit t is-typedef)
nil)
;; False alarm. Return t to go on to the next check.
(goto-char start-pos)
t))
t))))))
;; It was a false alarm. Check if we're in a label (or other
;; construct with `:' except bitfield) instead.
(goto-char start-pos)
(when (setq label-type (c-forward-label t match-pos nil))
;; Can't use `c-fontify-types-and-refs' here since we
;; use the label face at times.
(cond ((eq label-type 'goto-target)
(c-put-font-lock-face (caar c-record-ref-identifiers)
(cdar c-record-ref-identifiers)
c-label-face-name))
((eq label-type 'qt-1kwd-colon)
(c-put-font-lock-face (caar c-record-ref-identifiers)
(cdar c-record-ref-identifiers)
'font-lock-keyword-face))
((eq label-type 'qt-2kwds-colon)
(mapc
(lambda (kwd)
(c-put-font-lock-face (car kwd) (cdr kwd)
'font-lock-keyword-face))
c-record-ref-identifiers)))
(setq c-record-ref-identifiers nil)
;; `c-forward-label' has probably added a `c-decl-end'
;; marker, so return t to `c-find-decl-spots' to signal
;; that.
t))))
nil)))
(defun c-font-lock-enum-tail (limit)
;; Fontify an enum's identifiers when POINT is within the enum's brace
;; block.
;;
;; This function will be called from font-lock for a region bounded by POINT
;; and LIMIT, as though it were to identify a keyword for
;; font-lock-keyword-face. It always returns NIL to inhibit this and
;; prevent a repeat invocation. See elisp/lispref page "Search-based
;; Fontification".
;;
;; Note that this function won't attempt to fontify beyond the end of the
;; current enum block, if any.
(let* ((paren-state (c-parse-state))
(encl-pos (c-most-enclosing-brace paren-state))
(start (point))
)
(when (and
encl-pos
(eq (char-after encl-pos) ?\{)
(save-excursion
(goto-char encl-pos)
(c-backward-syntactic-ws)
(c-simple-skip-symbol-backward)
(or (looking-at c-brace-list-key) ; "enum"
(progn (c-backward-syntactic-ws)
(c-simple-skip-symbol-backward)
(looking-at c-brace-list-key)))))
(c-syntactic-skip-backward "^{," nil t)
(c-put-char-property (1- (point)) 'c-type 'c-decl-id-start)
(c-forward-syntactic-ws)
(c-font-lock-declarators limit t 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)))
(type-match (+ 2
(regexp-opt-depth prefix-re)
(c-lang-const c-simple-ws-depth))))
`((,(c-make-font-lock-search-function
(concat "\\<\\(" prefix-re "\\)" ; 1
(c-lang-const c-simple-ws) "+"
(concat "\\(" ; 2 + prefix-re + c-simple-ws
(c-lang-const c-symbol-key)
"\\)"))
`(,type-match
'font-lock-type-face t)
`((c-font-lock-declarators limit t nil)
(save-match-data
(goto-char (match-end ,type-match))
(c-forward-syntactic-ws))
(goto-char (match-end ,type-match))))))))
;; Fontify special declarations that lacks a type.
,@(when (c-lang-const c-typeless-decl-kwds)
`((,(c-make-font-lock-search-function
(concat "\\<\\("
(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)))))))
;; Fontify generic colon labels in languages that support them.
,@(when (c-lang-const c-recognize-colon-labels)
`(c-font-lock-labels))))
(c-lang-defconst c-complex-decl-matchers
"Complex font lock matchers for types and declarations. Used on level
3 and higher."
;; Note: This code in this form dumps a number of functions into the
;; resulting constant, `c-matchers-3'. At run time, font lock will call
;; each of them as a "FUNCTION" (see Elisp page "Search-based
;; Fontification"). The font lock region is delimited by POINT and the
;; single parameter, LIMIT. Each of these functions returns NIL (thus
;; inhibiting spurious font-lock-keyword-face highlighting and another
;; call).
t `(;; Initialize some things before the search functions below.
c-font-lock-complex-decl-prepare
,@(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))
;; Fontify all declarations, casts and normal labels.
c-font-lock-declarations
;; Fontify angle bracket arglists like templates in C++.
,@(when (c-lang-const c-recognize-<>-arglists)
`(c-font-lock-<>-arglists))
;; The first two rules here mostly find occurrences 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 "\\)\\>")
2 font-lock-type-face)
`(,(concat "\\<\\(" re "\\)\\>")
1 'font-lock-type-face)))
;; Fontify types preceded by `c-type-prefix-kwds' (e.g. "struct").
,@(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-prefix-spec-kwds-re)
(c-forward-keyword-clause 1))
,(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) ; That `nil' says use `font-lock-variable-name-face';
;; ; `t' would mean `font-lock-function-name-face'.
;; (progn
;; (c-put-char-property (match-beginning 0) 'c-type
;; 'c-decl-id-start)
;; ; 'c-decl-type-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)
;; This pattern is a probably a "(MATCHER . ANCHORED-HIGHLIGHTER)"
;; (see Elisp page "Search-based Fontification").
`(("\\<new\\>"
(c-font-lock-c++-new))))
))
(defun c-font-lock-labels (limit)
;; Fontify all statement labels from the point to LIMIT. Assumes
;; that strings and comments have been fontified already. Nil is
;; always returned.
;;
;; Note: This function is only used on decoration level 2; this is
;; taken care of directly by the gargantuan
;; `c-font-lock-declarations' on higher levels.
;;
;; This function might do hidden buffer changes.
(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 `(,@(when (c-lang-const c-brace-id-list-kwds)
;; Fontify the remaining identifiers inside an enum list when we start
;; inside it.
`(c-font-lock-enum-tail
;; Fontify the identifiers inside enum lists. (The enum type
;; name is handled by `c-simple-decl-matchers' or
;; `c-complex-decl-matchers' below.
(,(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 after goto etc.
,@(when (c-lang-const c-before-label-kwds)
`(;; (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 ,(+ (regexp-opt-depth c-before-label-re) 2)
c-label-face-name nil t))))))
;; 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 1)
(if (> (point) limit) (goto-char limit))))))))
,@(when (c-major-mode-is 'java-mode)
`((eval . (list "\\<\\(@[a-zA-Z0-9]+\\)\\>" 1 c-annotation-face))))
))
(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
(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)
;; FIXME!!! Put in a comment about the context of this function's
;; invocation. I think it's called as an ANCHORED-MATCHER within an
;; ANCHORED-HIGHLIGHTER. (2007/2/10).
;;
;; 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
;;
;; This function might do hidden buffer changes.
(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-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.
;;
;; This function might do hidden buffer changes.
(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.
;;
;; This function might do hidden buffer changes.
(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.
;;
;; This function might do hidden buffer changes.
(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 occurrence 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.
;;
;; This function might do hidden buffer changes.
(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)))
;; GtkDoc patterns contributed by Masatake YAMATO <jet@gyve.org>.
(defconst gtkdoc-font-lock-doc-comments
(let ((symbol "[a-zA-Z0-9_]+")
(header "^ \\* "))
`((,(concat header "\\(" symbol "\\):[ \t]*$")
1 ,c-doc-markup-face-name prepend nil)
(,(concat symbol "()")
0 ,c-doc-markup-face-name prepend nil)
(,(concat header "\\(" "@" symbol "\\):")
1 ,c-doc-markup-face-name prepend nil)
(,(concat "[#%@]" symbol)
0 ,c-doc-markup-face-name prepend nil))
))
(defconst gtkdoc-font-lock-doc-protection
`(("< \\(public\\|private\\|protected\\) >"
1 ,c-doc-markup-face-name prepend nil)))
(defconst gtkdoc-font-lock-keywords
`((,(lambda (limit)
(c-font-lock-doc-comments "/\\*\\*$" limit
gtkdoc-font-lock-doc-comments)
(c-font-lock-doc-comments "/\\*< " limit
gtkdoc-font-lock-doc-protection)
))))
;; Javadoc.
(defconst javadoc-font-lock-doc-comments
`(("{@[a-z]+[^}\n\r]*}" ; "{@foo ...}" markup.
0 ,c-doc-markup-face-name prepend nil)
("^\\(/\\*\\)?\\(\\s \\|\\*\\)*\\(@[a-z]+\\)" ; "@foo ..." markup.
3 ,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 'font-lock-warning-face prepend nil)))
(defconst javadoc-font-lock-keywords
`((,(lambda (limit)
(c-font-lock-doc-comments "/\\*\\*" limit
javadoc-font-lock-doc-comments)))))
;; Pike autodoc.
(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.
;;
;; This function might do hidden buffer changes.
(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-syntax-forward " ")
(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-syntax-forward " ")
(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 'font-lock-warning-face prepend nil)
))
(defun autodoc-font-lock-keywords ()
;; Note that we depend on that `c-current-comment-prefix' has got
;; its proper value here.
;;
;; This function might do hidden buffer changes.
;; 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)))))
;; 2006-07-10: awk-font-lock-keywords has been moved back to cc-awk.el.
(cc-provide 'cc-fonts)
;;; cc-fonts.el ends here
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