- (beginning-of-line)
- ;; See if we are in the beginning part of a function,
- ;; before the open brace. If so, advance forward.
- (while (not (looking-at "{\\|\\(\\s *$\\)"))
- (forward-line 1))
- (or (eobp)
- (forward-char 1))
- (let (maybe-beg)
- ;; Try to find the containing defun.
- (beginning-of-defun)
- (end-of-defun)
- ;; If the defun we found ends before the desired position,
- ;; see if there's a DEFUN construct
- ;; between that end and the desired position.
- (when (save-excursion
- (and (> location (point))
- (re-search-forward "^DEFUN"
- (save-excursion
- (goto-char location)
- (line-end-position))
- t)
- (re-search-forward "^{" nil t)
- (setq maybe-beg (point))))
- ;; If so, go to the end of that instead.
- (goto-char maybe-beg)
- (end-of-defun)))
- ;; If the desired position is within the defun we found,
- ;; find the function name.
- (when (< location (point))
- (backward-sexp 1)
- (let (beg tem)
-
- (forward-line -1)
- ;; Skip back over typedefs of arglist.
- (while (and (not (bobp))
- (looking-at "[ \t\n]"))
- (forward-line -1))
- ;; See if this is using the DEFUN macro used in Emacs,
- ;; or the DEFUN macro used by the C library:
- (if (condition-case nil
- (and (save-excursion
- (end-of-line)
- (while (= (preceding-char) ?\\)
- (end-of-line 2))
- (backward-sexp 1)
- (beginning-of-line)
- (setq tem (point))
- (looking-at "DEFUN\\b"))
- (>= location tem))
- (error nil))
- ;; DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, ...) ==> Ffile_name_directory
- ;; DEFUN(POSIX::STREAM-LOCK, stream lockp &key BLOCK SHARED START LENGTH) ==> POSIX::STREAM-LOCK
- (progn
- (goto-char tem)
- (down-list 1)
- (when (= (char-after (point)) ?\")
- (forward-sexp 1)
- (search-forward ","))
- (skip-syntax-forward " ")
- (buffer-substring-no-properties
- (point)
- (progn (search-forward ",")
- (forward-char -1)
- (skip-syntax-backward " ")
- (point))))
- (if (looking-at "^[+-]")
- (change-log-get-method-definition)
- ;; Ordinary C function syntax.
- (setq beg (point))
- (if (and
- ;; Protect against "Unbalanced parens" error.
- (condition-case nil
- (progn
- (down-list 1) ; into arglist
- (backward-up-list 1)
- (skip-chars-backward " \t")
- t)
- (error nil))
- ;; Verify initial pos was after
- ;; real start of function.
- (save-excursion
- (goto-char beg)
- ;; For this purpose, include the line
- ;; that has the decl keywords. This
- ;; may also include some of the
- ;; comments before the function.
- (while (and (not (bobp))
- (save-excursion
- (forward-line -1)
- (looking-at "[^\n\f]")))
- (forward-line -1))
- (>= location (point)))
- ;; Consistency check: going down and up
- ;; shouldn't take us back before BEG.
- (> (point) beg))
- (let (end middle)
- ;; Don't include any final whitespace
- ;; in the name we use.
- (skip-chars-backward " \t\n")
- (setq end (point))
- (backward-sexp 1)
- ;; Now find the right beginning of the name.
- ;; Include certain keywords if they
- ;; precede the name.
- (setq middle (point))
- (forward-word -1)
- ;; Ignore these subparts of a class decl
- ;; and move back to the class name itself.
- (while (looking-at "public \\|private ")
- (skip-chars-backward " \t:")
- (setq end (point))
- (backward-sexp 1)
- (setq middle (point))
- (forward-word -1))
- (and (bolp)
- (looking-at
- "enum \\|struct \\|union \\|class ")
- (setq middle (point)))
- (goto-char end)
- (when (eq (preceding-char) ?=)
- (forward-char -1)
- (skip-chars-backward " \t")
- (setq end (point)))
- (buffer-substring-no-properties
- middle end))))))))