code.delx.au - gnu-emacs-elpa/blob - company-dabbrev-code.el

   1 ;;; company-dabbrev-code.el --- a dabbrev-like company-mode back-end for code
   2 ;;
   3 ;; Copyright (C) 2009 Nikolaj Schumacher
   4 ;;
   5 ;; This file is part of company 0.3.1.
   6 ;;
   7 ;; This program is free software; you can redistribute it and/or
   8 ;; modify it under the terms of the GNU General Public License
   9 ;; as published by the Free Software Foundation; either version 2
  10 ;; of the License, or (at your option) any later version.
  11 ;;
  12 ;; This program is distributed in the hope that it will be useful,
  13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 ;; GNU General Public License for more details.
  16 ;;
  17 ;; You should have received a copy of the GNU General Public License
  18 ;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 (require 'company)
  21 (eval-when-compile (require 'cl))
  22
  23 (defcustom company-dabbrev-code-modes
  24   '(asm-mode batch-file-mode c++-mode c-mode cperl-mode csharp-mode css-mode
  25     emacs-lisp-mode erlang-mode espresso-mode f90-mode fortran-mode
  26     haskell-mode java-mode javascript-mode jde-mode js2-mode lisp-mode
  27     lua-mode objc-mode perl-mode php-mode python-mode ruby-mode scheme-mode
  28     shell-script-mode)
  29   "*Modes that use `company-dabbrev-code'.
  30 In all these modes `company-dabbrev-code' will complete only symbols, not text
  31 in comments or strings.  In other modes `company-dabbrev-code' will pass control
  32 to other back-ends \(e.g. `company-dabbrev'\)"
  33   :group 'company
  34   :type '(repeat (symbol :tag "Major mode")))
  35
  36 (defun company-dabbrev-code--buffer-symbols (prefix)
  37   (save-excursion
  38     (goto-char (point-min))
  39     (let ((regexp (concat "\\_<" (if (equal prefix "")
  40                                      "\\([a-zA-Z]\\|\\s_\\)"
  41                                    (regexp-quote prefix))
  42                           "\\(\\sw\\|\\s_\\)*\\_>"))
  43            match symbols)
  44       (while (re-search-forward regexp nil t)
  45         (setq match (match-string-no-properties 0))
  46         (unless (company-in-string-or-comment)
  47           (add-to-list 'symbols match)))
  48       symbols)))
  49
  50 ;;;###autoload
  51 (defun company-dabbrev-code (command &optional arg &rest ignored)
  52   "A dabbrev-like `company-mode' back-end for code.
  53 The back-end looks for all symbols in the current buffer that aren't in
  54 comments or strings."
  55   (interactive (list 'interactive))
  56   (case command
  57     ('interactive (company-begin-backend 'company-dabbrev-code))
  58     ('prefix (and (apply 'derived-mode-p company-dabbrev-code-modes)
  59                   (not (company-in-string-or-comment))
  60                   (or (company-grab-symbol) 'stop)))
  61     ('candidates (let ((case-fold-search nil))
  62                    (company-dabbrev-code--buffer-symbols arg)))))
  63
  64 (provide 'company-dabbrev-code)
  65 ;;; company-dabbrev-code.el ends here