;;; cc-cmds.el --- user level commands for CC Mode
-;; Copyright (C) 1985, 1987, 1992-2011 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 1987, 1992-2012 Free Software Foundation, Inc.
;; Authors: 2003- Alan Mackenzie
;; 1998- Martin Stjernholm
(setcar (car elem) 'label))
(setq elem (cdr elem)))
;; some language elements can only be determined by checking
- ;; the following line. Lets first look for ones that can be
+ ;; the following line. Let's first look for ones that can be
;; found when looking on the line with the colon
(setq newlines
(and c-auto-newline
;; Determine where we are with respect to functions (or other brace
;; constructs, included in the term "function" in the rest of this comment).
;; Point is assumed to be outside any macro or literal.
- ;; This is used by c-\(begining\|end\)-of-defun.
+ ;; This is used by c-\(beginning\|end\)-of-defun.
;;
;; Return one of these symbols:
;; at-header : we're at the start of a function's header.
(setq n (1- n))))
n)
+(defun c-narrow-to-most-enclosing-decl-block (&optional inclusive)
+ ;; If we are inside a decl-block (in the sense of c-looking-at-decl-block),
+ ;; i.e. something like namespace{} or extern{}, narrow to the insides of
+ ;; that block (NOT including the enclosing braces) if INCLUSIVE is nil,
+ ;; otherwise include the braces. If the closing brace is missing,
+ ;; (point-max) is used instead.
+ (let ((paren-state (c-parse-state))
+ encl-decl)
+ (setq encl-decl (and paren-state (c-most-enclosing-decl-block paren-state)))
+ (if encl-decl
+ (save-excursion
+ (narrow-to-region
+ (if inclusive
+ (progn (goto-char encl-decl)
+ (c-beginning-of-decl-1)
+ (point))
+ (1+ encl-decl))
+ (progn
+ (goto-char encl-decl)
+ (or (c-safe (forward-list)
+ (if inclusive
+ (point)
+ (1- (point))))
+ (point-max))))))))
+
+(defun c-widen-to-enclosing-decl-scope (paren-state orig-point-min orig-point-max)
+ ;; Narrow the buffer to the innermost declaration scope (e.g. a class, a
+ ;; namespace or the "whole buffer") recorded in PAREN-STATE, the bounding
+ ;; braces NOT being included in the resulting region. On no account may the
+ ;; final region exceed that bounded by ORIG-POINT-MIN, ORIG-POINT-MAX.
+ ;; PAREN-STATE is a list of buffer positions in the style of
+ ;; (c-parse-state), one of which will be that of the desired opening brace,
+ ;; if there is one.
+ ;;
+ ;; Return the position of the enclosing opening brace, or nil
+ (let (encl-decl) ; putative position of decl-scope's opening brace.
+ (save-restriction
+ (narrow-to-region orig-point-min orig-point-max)
+ (setq encl-decl (and paren-state
+ (c-most-enclosing-decl-block paren-state))))
+ (if encl-decl
+ (progn
+ (widen)
+ (narrow-to-region (1+ encl-decl)
+ (save-excursion
+ (goto-char encl-decl)
+ (or (c-safe (forward-list)
+ (1- (point)))
+ orig-point-max)))
+ encl-decl)
+ (narrow-to-region orig-point-min orig-point-max)
+ nil)))
+
+(eval-and-compile
+ (defmacro c-while-widening-to-decl-block (condition)
+ ;; Repeatedly evaluate CONDITION until it returns nil. After each
+ ;; evaluation, if `c-defun-tactic' is set appropriately, widen to innards
+ ;; of the next enclosing declaration block (e.g. namespace, class), or the
+ ;; buffer's original restriction.
+ ;;
+ ;; This is a very special purpose macro, which assumes the existence of
+ ;; several variables. It is for use only in c-beginning-of-defun and
+ ;; c-end-of-defun.
+ `(while
+ (and ,condition
+ (eq c-defun-tactic 'go-outward)
+ lim)
+ (setq paren-state (c-whack-state-after lim paren-state))
+ (setq lim (c-widen-to-enclosing-decl-scope
+ paren-state orig-point-min orig-point-max))
+ (setq where 'in-block))))
+
(defun c-beginning-of-defun (&optional arg)
"Move backward to the beginning of a defun.
Every top level declaration that contains a brace paren block is
(c-save-buffer-state
(beginning-of-defun-function end-of-defun-function
(start (point))
- where paren-state pos)
-
- ;; Move back out of any macro/comment/string we happen to be in.
- (c-beginning-of-macro)
- (setq pos (c-literal-limits))
- (if pos (goto-char (car pos)))
-
- (setq where (c-where-wrt-brace-construct))
-
- (if (< arg 0)
- ;; Move forward to the closing brace of a function.
- (progn
- (if (memq where '(at-function-end outwith-function))
- (setq arg (1+ arg)))
- (if (< arg 0)
- (setq arg (c-forward-to-nth-EOF-} (- arg) where)))
- ;; Move forward to the next opening brace....
- (when (and (= arg 0)
- (c-syntactic-re-search-forward "{" nil 'eob))
- (backward-char)
- ;; ... and backward to the function header.
- (c-beginning-of-decl-1)
- t))
+ (paren-state (copy-tree (c-parse-state))) ; This must not share list
+ ; structure with other users of c-state-cache.
+ (orig-point-min (point-min)) (orig-point-max (point-max))
+ lim ; Position of { which has been widened to.
+ where pos)
- ;; Move backward to the opening brace of a function.
- (when (and (> arg 0)
- (eq (setq arg (c-backward-to-nth-BOF-{ arg where)) 0))
+ (save-restriction
+ (if (eq c-defun-tactic 'go-outward)
+ (setq lim (c-widen-to-enclosing-decl-scope ; e.g. class, namespace.
+ paren-state orig-point-min orig-point-max)))
- ;; Go backward to this function's header.
- (c-beginning-of-decl-1)
+ ;; Move back out of any macro/comment/string we happen to be in.
+ (c-beginning-of-macro)
+ (setq pos (c-literal-limits))
+ (if pos (goto-char (car pos)))
- (setq pos (point))
- ;; We're now there, modulo comments and whitespace.
- ;; Try to be line oriented; position point at the closest
- ;; preceding boi that isn't inside a comment, but if we hit
- ;; the previous declaration then we use the current point
- ;; instead.
- (while (and (/= (point) (c-point 'boi))
- (c-backward-single-comment)))
- (if (/= (point) (c-point 'boi))
- (goto-char pos)))
+ (setq where (c-where-wrt-brace-construct))
- (c-keep-region-active)
- (= arg 0))))
+ (if (< arg 0)
+ ;; Move forward to the closing brace of a function.
+ (progn
+ (if (memq where '(at-function-end outwith-function))
+ (setq arg (1+ arg)))
+ (if (< arg 0)
+ (c-while-widening-to-decl-block
+ (< (setq arg (- (c-forward-to-nth-EOF-} (- arg) where))) 0)))
+ ;; Move forward to the next opening brace....
+ (when (and (= arg 0)
+ (progn
+ (c-while-widening-to-decl-block
+ (not (c-syntactic-re-search-forward "{" nil 'eob)))
+ (eq (char-before) ?{)))
+ (backward-char)
+ ;; ... and backward to the function header.
+ (c-beginning-of-decl-1)
+ t))
+
+ ;; Move backward to the opening brace of a function, making successively
+ ;; larger portions of the buffer visible as necessary.
+ (when (> arg 0)
+ (c-while-widening-to-decl-block
+ (> (setq arg (c-backward-to-nth-BOF-{ arg where)) 0)))
+
+ (when (eq arg 0)
+ ;; Go backward to this function's header.
+ (c-beginning-of-decl-1)
+
+ (setq pos (point))
+ ;; We're now there, modulo comments and whitespace.
+ ;; Try to be line oriented; position point at the closest
+ ;; preceding boi that isn't inside a comment, but if we hit
+ ;; the previous declaration then we use the current point
+ ;; instead.
+ (while (and (/= (point) (c-point 'boi))
+ (c-backward-single-comment)))
+ (if (/= (point) (c-point 'boi))
+ (goto-char pos)))
+
+ (c-keep-region-active)
+ (= arg 0)))))
(defun c-forward-to-nth-EOF-} (n where)
;; Skip to the closing brace of the Nth function after point. If
(c-save-buffer-state
(beginning-of-defun-function end-of-defun-function
(start (point))
- where paren-state pos)
+ (paren-state (copy-tree (c-parse-state))) ; This must not share list
+ ; structure with other users of c-state-cache.
+ (orig-point-min (point-min)) (orig-point-max (point-max))
+ lim
+ where pos)
+ (save-restriction
+ (if (eq c-defun-tactic 'go-outward)
+ (setq lim (c-widen-to-enclosing-decl-scope ; e.g. class, namespace
+ paren-state orig-point-min orig-point-max)))
- ;; Move back out of any macro/comment/string we happen to be in.
- (c-beginning-of-macro)
- (setq pos (c-literal-limits))
- (if pos (goto-char (car pos)))
+ ;; Move back out of any macro/comment/string we happen to be in.
+ (c-beginning-of-macro)
+ (setq pos (c-literal-limits))
+ (if pos (goto-char (car pos)))
- (setq where (c-where-wrt-brace-construct))
+ (setq where (c-where-wrt-brace-construct))
- (if (< arg 0)
- ;; Move backwards to the } of a function
- (progn
- (if (memq where '(at-header outwith-function))
- (setq arg (1+ arg)))
- (if (< arg 0)
- (setq arg (c-backward-to-nth-BOF-{ (- arg) where)))
- (if (= arg 0)
- (c-syntactic-skip-backward "^}")))
-
- ;; Move forward to the } of a function
- (if (> arg 0)
- (setq arg (c-forward-to-nth-EOF-} arg where))))
-
- ;; Do we need to move forward from the brace to the semicolon?
- (when (eq arg 0)
- (if (c-in-function-trailer-p) ; after "}" of struct/enum, etc.
- (c-syntactic-re-search-forward ";"))
-
- (setq pos (point))
- ;; We're there now, modulo comments and whitespace.
- ;; Try to be line oriented; position point after the next
- ;; newline that isn't inside a comment, but if we hit the
- ;; next declaration then we use the current point instead.
- (while (and (not (bolp))
- (not (looking-at "\\s *$"))
- (c-forward-single-comment)))
- (cond ((bolp))
- ((looking-at "\\s *$")
- (forward-line 1))
- (t
- (goto-char pos))))
+ (if (< arg 0)
+ ;; Move backwards to the } of a function
+ (progn
+ (if (memq where '(at-header outwith-function))
+ (setq arg (1+ arg)))
+ (if (< arg 0)
+ (c-while-widening-to-decl-block
+ (< (setq arg (- (c-backward-to-nth-BOF-{ (- arg) where))) 0)))
+ (if (= arg 0)
+ (c-while-widening-to-decl-block
+ (progn (c-syntactic-skip-backward "^}")
+ (not (eq (char-before) ?}))))))
+
+ ;; Move forward to the } of a function
+ (if (> arg 0)
+ (c-while-widening-to-decl-block
+ (> (setq arg (c-forward-to-nth-EOF-} arg where)) 0))))
+
+ ;; Do we need to move forward from the brace to the semicolon?
+ (when (eq arg 0)
+ (if (c-in-function-trailer-p) ; after "}" of struct/enum, etc.
+ (c-syntactic-re-search-forward ";"))
- (c-keep-region-active)
- (= arg 0)))
+ (setq pos (point))
+ ;; We're there now, modulo comments and whitespace.
+ ;; Try to be line oriented; position point after the next
+ ;; newline that isn't inside a comment, but if we hit the
+ ;; next declaration then we use the current point instead.
+ (while (and (not (bolp))
+ (not (looking-at "\\s *$"))
+ (c-forward-single-comment)))
+ (cond ((bolp))
+ ((looking-at "\\s *$")
+ (forward-line 1))
+ (t
+ (goto-char pos))))
+
+ (c-keep-region-active)
+ (= arg 0))))
(defun c-defun-name ()
"Return the name of the current defun, or NIL if there isn't one.
;;
;; This function might do hidden buffer changes.
(save-excursion
+ (save-restriction
+ (when (eq c-defun-tactic 'go-outward)
+ (c-narrow-to-most-enclosing-decl-block t) ; e.g. class, namespace
+ (or (save-restriction
+ (c-narrow-to-most-enclosing-decl-block nil)
;; Note: Some code duplication in `c-beginning-of-defun' and
;; `c-end-of-defun'.
lim pos end-pos)
(unless (c-safe
(goto-char (c-least-enclosing-brace paren-state))
- ;; If we moved to the outermost enclosing paren then we
- ;; can use c-safe-position to set the limit. Can't do
- ;; that otherwise since the earlier paren pair on
- ;; paren-state might very well be part of the
- ;; declaration we should go to.
+ ;; If we moved to the outermost enclosing paren
+ ;; then we can use c-safe-position to set the
+ ;; limit. Can't do that otherwise since the
+ ;; earlier paren pair on paren-state might very
+ ;; well be part of the declaration we should go
+ ;; to.
(setq lim (c-safe-position (point) paren-state))
t)
;; At top level. Make sure we aren't inside a literal.
(forward-line 1)
(point))
(t
- pos)))))
- ))))
+ pos))))))))
+ (and (not near)
+ (goto-char (point-min))
+ (c-forward-decl-or-cast-1 -1 nil nil)
+ (eq (char-after) ?\{)
+ (cons (point-min) (point-max))))))))
(defun c-mark-function ()
"Put mark at end of the current top-level declaration or macro, point at beginning.
(c-narrow-to-comment-innards range) ; This may move point back.
(let* ((here (point))
last
- (here-filler ; matches WS and comment-prefices at point.
+ (here-filler ; matches WS and comment-prefixes at point.
(concat "\\=\\(^[ \t]*\\(" c-current-comment-prefix "\\)"
"\\|[ \t\n\r\f]\\)*"))
(prefix-at-bol-here ; matches WS and prefix at BOL, just before point
;; Now seek successively earlier sentence ends between PAR-BEG and
;; HERE, until the "start of sentence" following it is earlier than
- ;; HERE, or we hit PAR-BEG. Beware of comment prefices!
+ ;; HERE, or we hit PAR-BEG. Beware of comment prefixes!
(while (and (re-search-backward (c-sentence-end) par-beg 'limit)
(setq last (point))
(goto-char (match-end 0)) ; tentative beginning of sentence
(end (1- (cdr range)))
(here-filler ; matches WS and escaped newlines at point.
"\\=\\([ \t\n\r\f]\\|\\\\[\n\r]\\)*")
- ;; Enhance paragraph-start and paragraph-separate also to recognise
+ ;; Enhance paragraph-start and paragraph-separate also to recognize
;; blank lines terminated by escaped EOLs. IT MAY WELL BE that
;; these values should be customizable user options, or something.
(paragraph-start c-string-par-start)
(save-match-data
(let* ((here (point))
last
- ;; Enhance paragraph-start and paragraph-separate to recognise
+ ;; Enhance paragraph-start and paragraph-separate to recognize
;; blank lines terminated by escaped EOLs.
(paragraph-start c-string-par-start)
(paragraph-separate c-string-par-separate)
(defun c-after-statement-terminator-p () ; Should we pass in LIM here?
;; Does point immediately follow a statement "terminator"? A virtual
- ;; semicolon is regarded here as such. So is a an opening brace ;-)
+ ;; semicolon is regarded here as such. So is an opening brace ;-)
;;
;; This function might do hidden buffer changes.
(or (save-excursion
;; Are we about to move backwards into or out of a
;; preprocessor command? If so, locate its beginning.
(when (eq (cdr res) 'macro-boundary)
- (setq macro-fence
- (save-excursion
- (if macro-fence
- (progn
- (end-of-line)
- (and (not (eobp))
- (progn (c-skip-ws-forward)
- (c-beginning-of-macro))
- (progn (c-end-of-macro)
- (point))))
- (and (not (eobp))
- (c-beginning-of-macro)
- (progn (c-end-of-macro) (point)))))))
+ (save-excursion
+ (beginning-of-line)
+ (setq macro-fence
+ (and (not (bobp))
+ (progn (c-skip-ws-backward) (c-beginning-of-macro))
+ (point)))))
;; Are we about to move backwards into a literal?
(when (memq (cdr res) '(macro-boundary literal))
(setq range (c-ascertain-preceding-literal)))
move backward across a preprocessor conditional.
If there aren't enough conditionals after \(or before) point, an
-error is signalled.
+error is signaled.
\"#elif\" is treated like \"#else\" followed by \"#if\", except that
the nesting level isn't changed when tracking subconditionals.
; (or (<= (- (cdr c-lit-limits) 2) (point))
; 2010-10-17 Construct removed.
; (or (< (- (cdr c-lit-limits) 2) (point))
- (and
+ (and
(search-forward-regexp
(concat "\\=[ \t]*\\(" c-current-comment-prefix "\\)")
(- (cdr c-lit-limits) 2) t)
HCoop / bpt / emacs.git / blobdiff