;;; cc-mode.el --- major mode for editing C and similar languages
;; Copyright (C) 1985, 1987, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-;; 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
-;; Free Software Foundation, Inc.
+;; 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
+;; 2010 Free Software Foundation, Inc.
;; Authors: 2003- Alan Mackenzie
;; 1998- Martin Stjernholm
;; 1985 Richard M. Stallman
;; Maintainer: bug-cc-mode@gnu.org
;; Created: a long, long, time ago. adapted from the original c-mode.el
-;; Keywords: c languages oop
+;; Keywords: c languages
;; This file is part of GNU Emacs.
(cc-bytecomp-defvar adaptive-fill-first-line-regexp) ; Emacs
(cc-bytecomp-defun set-keymap-parents) ; XEmacs
(cc-bytecomp-defun run-mode-hooks) ; Emacs 21.1
-(cc-bytecomp-obsolete-fun make-local-hook) ; Marked obsolete in Emacs 21.1.
;; We set these variables during mode init, yet we don't require
;; font-lock.
(when (or c-recognize-<>-arglists
(c-major-mode-is 'awk-mode)
- (c-major-mode-is '(c-mode c++-mode objc-mode)))
+ (c-major-mode-is '(java-mode c-mode c++-mode objc-mode)))
;; We'll use the syntax-table text property to change the syntax
;; of some chars for this language, so do the necessary setup for
;; that.
(make-local-variable 'lookup-syntax-properties)
(setq lookup-syntax-properties t)))
- ;; Use this in Emacs 21 to avoid meddling with the rear-nonsticky
+ ;; Use this in Emacs 21+ to avoid meddling with the rear-nonsticky
;; property on each character.
(when (boundp 'text-property-default-nonsticky)
(make-local-variable 'text-property-default-nonsticky)
- (let ((elem (assq 'syntax-table text-property-default-nonsticky)))
- (if elem
- (setcdr elem t)
- (setq text-property-default-nonsticky
- (cons '(syntax-table . t)
- text-property-default-nonsticky))))
- (setq text-property-default-nonsticky
- (cons '(c-type . t)
- text-property-default-nonsticky)))
+ (mapc (lambda (tprop)
+ (unless (assq tprop text-property-default-nonsticky)
+ (setq text-property-default-nonsticky
+ (cons `(,tprop . t) text-property-default-nonsticky))))
+ '(syntax-table category c-type)))
;; In Emacs 21 and later it's possible to turn off the ad-hoc
;; heuristic that open parens in column 0 are defun starters. Since
;; Install the functions that ensure that various internal caches
;; don't become invalid due to buffer changes.
- (make-local-hook 'before-change-functions)
+ (when (featurep 'xemacs)
+ (make-local-hook 'before-change-functions)
+ (make-local-hook 'after-change-functions))
(add-hook 'before-change-functions 'c-before-change nil t)
- (make-local-hook 'after-change-functions)
(add-hook 'after-change-functions 'c-after-change nil t)
(set (make-local-variable 'font-lock-extend-after-change-region-function)
'c-extend-after-change-region)) ; Currently (2009-05) used by all
(font-lock-mode 0)
(font-lock-mode 1)))
+;; Buffer local variables defining the region to be fontified by a font lock
+;; after-change function. They are set in c-after-change to
+;; after-change-function's BEG and END, and may be modified by a
+;; `c-before-font-lock-function'.
+(defvar c-new-BEG 0)
+(make-variable-buffer-local 'c-new-BEG)
+(defvar c-new-END 0)
+(make-variable-buffer-local 'c-new-END)
+
(defun c-common-init (&optional mode)
"Common initialization for all CC Mode modes.
In addition to the work done by `c-basic-common-init' and
;; Starting a mode is a sort of "change". So call the change functions...
(save-restriction
(widen)
+ (setq c-new-BEG (point-min))
+ (setq c-new-END (point-max))
(save-excursion
- (if c-get-state-before-change-function
- (funcall c-get-state-before-change-function (point-min) (point-max)))
+ (if c-get-state-before-change-functions
+ (mapc (lambda (fn)
+ (funcall fn (point-min) (point-max)))
+ c-get-state-before-change-functions))
(if c-before-font-lock-function
(funcall c-before-font-lock-function (point-min) (point-max)
(- (point-max) (point-min))))))
(and (cdr rfn)
(setq require-final-newline mode-require-final-newline)))))
+(defun c-count-cfss (lv-alist)
+ ;; LV-ALIST is an alist like `file-local-variables-alist'. Count how many
+ ;; elements with the key `c-file-style' there are in it.
+ (let ((elt-ptr lv-alist) elt (cownt 0))
+ (while elt-ptr
+ (setq elt (car elt-ptr)
+ elt-ptr (cdr elt-ptr))
+ (when (eq (car elt) 'c-file-style)
+ (setq cownt (1+ cownt))))
+ cownt))
+
(defun c-before-hack-hook ()
"Set the CC Mode style and \"offsets\" when in the buffer's local variables.
They are set only when, respectively, the pseudo variables
This function is called from the hook `before-hack-local-variables-hook'."
(when c-buffer-is-cc-mode
- (let ((stile (cdr (assq 'c-file-style file-local-variables-alist)))
+ (let ((mode-cons (assq 'mode file-local-variables-alist))
+ (stile (cdr (assq 'c-file-style file-local-variables-alist)))
(offsets (cdr (assq 'c-file-offsets file-local-variables-alist))))
+ (when mode-cons
+ (hack-one-local-variable (car mode-cons) (cdr mode-cons))
+ (setq file-local-variables-alist
+ (delq mode-cons file-local-variables-alist)))
(when stile
(or (stringp stile) (error "c-file-style is not a string"))
- (c-set-style stile))
+ (if (boundp 'dir-local-variables-alist)
+ ;; Determine whether `c-file-style' was set in the file's local
+ ;; variables or in a .dir-locals.el (a directory setting).
+ (let ((cfs-in-file-and-dir-count
+ (c-count-cfss file-local-variables-alist))
+ (cfs-in-dir-count (c-count-cfss dir-local-variables-alist)))
+ (c-set-style stile
+ (= cfs-in-file-and-dir-count cfs-in-dir-count)))
+ (c-set-style stile)))
(when offsets
(mapc
(lambda (langentry)
(defmacro c-run-mode-hooks (&rest hooks)
;; Emacs 21.1 has introduced a system with delayed mode hooks that
- ;; require the use of the new function `run-mode-hooks'.
+ ;; requires the use of the new function `run-mode-hooks'.
(if (cc-bytecomp-fboundp 'run-mode-hooks)
`(run-mode-hooks ,@hooks)
`(progn ,@(mapcar (lambda (hook) `(run-hooks ,hook)) hooks))))
\f
;;; Change hooks, linking with Font Lock.
-;; Buffer local variables defining the region to be fontified by a font lock
-;; after-change function. They are set in c-after-change to
-;; after-change-function's BEG and END, and may be modified by a
-;; `c-before-font-lock-function'.
-(defvar c-new-BEG 0)
-(make-variable-buffer-local 'c-new-BEG)
-(defvar c-new-END 0)
-(make-variable-buffer-local 'c-new-END)
-
;; Buffer local variables recording Beginning/End-of-Macro position before a
;; change, when a macro straddles, respectively, the BEG or END (or both) of
;; the change region. Otherwise these have the values BEG/END.
;; has already been widened, and match-data saved. The return value is
;; meaningless.
;;
- ;; This function is the C/C++/ObjC value of
- ;; `c-get-state-before-change-function' and is called exclusively as a
+ ;; This function is in the C/C++/ObjC values of
+ ;; `c-get-state-before-change-functions' and is called exclusively as a
;; before change function.
(goto-char beg)
(c-beginning-of-macro)
(setq c-old-BOM (point))
(goto-char end)
- (if (c-beginning-of-macro)
- (c-end-of-macro))
+ (when (c-beginning-of-macro)
+ (c-end-of-macro)
+ (or (eobp) (forward-char))) ; Over the terminating NL which may be marked
+ ; with a c-cpp-delimiter category property
(setq c-old-EOM (point)))
(defun c-neutralize-CPP-line (beg end)
;; inside a string, comment, or macro.
(goto-char c-old-BOM) ; already set to old start of macro or begg.
(setq c-new-BEG
- (if (setq limits (c-state-literal-at (point)))
- (cdr limits) ; go forward out of any string or comment.
- (point)))
+ (min c-new-BEG
+ (if (setq limits (c-state-literal-at (point)))
+ (cdr limits) ; go forward out of any string or comment.
+ (point))))
(goto-char endd)
(if (setq limits (c-state-literal-at (point)))
(goto-char (car limits))) ; go backward out of any string or comment.
(if (c-beginning-of-macro)
(c-end-of-macro))
- (setq c-new-END (max (+ (- c-old-EOM old-len) (- endd begg))
- (point)))
+ (setq c-new-END (max c-new-END
+ (+ (- c-old-EOM old-len) (- endd begg))
+ (point)))
;; Clear all old relevant properties.
(c-clear-char-property-with-value c-new-BEG c-new-END 'syntax-table '(1))
)))))
(defun c-before-change (beg end)
- ;; Function to be put on `before-change-function'. Primarily, this calls
- ;; the language dependent `c-get-state-before-change-function'. It is
+ ;; Function to be put on `before-change-functions'. Primarily, this calls
+ ;; the language dependent `c-get-state-before-change-functions'. It is
;; otherwise used only to remove stale entries from the `c-found-types'
;; cache, and to record entries which a `c-after-change' function might
;; confirm as stale.
;; larger than (beg end).
(setq c-new-BEG beg
c-new-END end)
- (if c-get-state-before-change-function
- (funcall c-get-state-before-change-function beg end))
+ (if c-get-state-before-change-functions
+ (mapc (lambda (fn)
+ (funcall fn beg end))
+ c-get-state-before-change-functions))
))))
(defun c-after-change (beg end old-len)
(when (> beg end)
(setq beg end)))
+ ;; C-y is capable of spuriously converting category properties
+ ;; c-</>-as-paren-syntax into hard syntax-table properties. Remove
+ ;; these when it happens.
+ (c-clear-char-property-with-value beg end 'syntax-table
+ c-<-as-paren-syntax)
+ (c-clear-char-property-with-value beg end 'syntax-table
+ c->-as-paren-syntax)
+
(c-trim-found-types beg end old-len) ; maybe we don't need all of these.
(c-invalidate-sws-region-after beg end)
(c-invalidate-state-cache beg)
c-beginning-of-syntax
(font-lock-mark-block-function
. c-mark-function)))
-
- (make-local-hook 'font-lock-mode-hook)
+ (if (featurep 'xemacs)
+ (make-local-hook 'font-lock-mode-hook))
(add-hook 'font-lock-mode-hook 'c-after-font-lock-init nil t))
(defun c-extend-after-change-region (beg end old-len)
HCoop / bpt / emacs.git / blobdiff