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

   1 ;;; company-dabbrev-code.el --- dabbrev-like company-mode back-end for code
   2
   3 ;; Copyright (C) 2009, 2011  Free Software Foundation, Inc.
   4
   5 ;; Author: Nikolaj Schumacher
   6
   7 ;; This file is part of GNU Emacs.
   8
   9 ;; GNU Emacs is free software: you can redistribute it and/or modify
  10 ;; it under the terms of the GNU General Public License as published by
  11 ;; the Free Software Foundation, either version 3 of the License, or
  12 ;; (at your option) any later version.
  13
  14 ;; GNU Emacs is distributed in the hope that it will be useful,
  15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 ;; GNU General Public License for more details.
  18
  19 ;; You should have received a copy of the GNU General Public License
  20 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  21
  22
  23 ;;; Commentary:
  24 ;;
  25
  26 ;;; Code:
  27
  28 (require 'company)
  29 (require 'company-dabbrev)
  30 (eval-when-compile (require 'cl))
  31
  32 (defgroup company-dabbrev-code nil
  33   "dabbrev-like completion back-end for code."
  34   :group 'company)
  35
  36 (defcustom company-dabbrev-code-modes
  37   '(asm-mode batch-file-mode c++-mode c-mode cperl-mode csharp-mode css-mode
  38     emacs-lisp-mode erlang-mode espresso-mode f90-mode fortran-mode
  39     haskell-mode java-mode javascript-mode jde-mode js2-mode lisp-mode
  40     lua-mode objc-mode perl-mode php-mode python-mode ruby-mode scheme-mode
  41     shell-script-mode)
  42   "Modes that use `company-dabbrev-code'.
  43 In all these modes `company-dabbrev-code' will complete only symbols, not text
  44 in comments or strings.  In other modes `company-dabbrev-code' will pass control
  45 to other back-ends \(e.g. `company-dabbrev'\).
  46 Value t means complete in all modes."
  47   :type '(choice (repeat (symbol :tag "Major mode"))
  48                  (const tag "All modes" t)))
  49
  50 (defcustom company-dabbrev-code-other-buffers t
  51   "Determines whether `company-dabbrev-code' should search other buffers.
  52 If `all', search all other buffers.  If t, search buffers with the same
  53 major mode.
  54 See also `company-dabbrev-code-time-limit'."
  55   :type '(choice (const :tag "Off" nil)
  56                  (const :tag "Same major mode" t)
  57                  (const :tag "All" all)))
  58
  59 (defcustom company-dabbrev-code-time-limit .5
  60   "Determines how long `company-dabbrev-code' should look for matches."
  61   :type '(choice (const :tag "Off" nil)
  62                  (number :tag "Seconds")))
  63
  64 (defsubst company-dabbrev-code--make-regexp (prefix)
  65   (concat "\\_<" (if (equal prefix "")
  66                      "\\([a-zA-Z]\\|\\s_\\)"
  67                    (regexp-quote prefix))
  68           "\\(\\sw\\|\\s_\\)*\\_>"))
  69
  70 ;;;###autoload
  71 (defun company-dabbrev-code (command &optional arg &rest ignored)
  72   "dabbrev-like `company-mode' back-end for code.
  73 The back-end looks for all symbols in the current buffer that aren't in
  74 comments or strings."
  75   (interactive (list 'interactive))
  76   (case command
  77     (interactive (company-begin-backend 'company-dabbrev-code))
  78     (prefix (and (or (eq t company-dabbrev-code-modes)
  79                      (apply 'derived-mode-p company-dabbrev-code-modes))
  80                  (not (company-in-string-or-comment))
  81                  (or (company-grab-symbol) 'stop)))
  82     (candidates (let ((case-fold-search nil))
  83                   (company-dabbrev--search
  84                    (company-dabbrev-code--make-regexp arg)
  85                    company-dabbrev-code-time-limit
  86                    company-dabbrev-code-other-buffers t)))
  87     (duplicates t)))
  88
  89 (provide 'company-dabbrev-code)
  90 ;;; company-dabbrev-code.el ends here