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

   1 ;;; company-ropemacs.el --- a company-mode completion back-end for pysmell.el
   2 ;;
   3 ;; Copyright (C) 2009-2010 Nikolaj Schumacher
   4 ;;
   5 ;; This file is part of company 0.4.3.
   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 (eval-when-compile (require 'cl))
  21 (require 'pymacs)
  22
  23 (unless (fboundp 'rope-completions)
  24   (pymacs-load "ropemacs" "rope-"))
  25
  26 (unless (fboundp 'rope-completions)
  27   (error "rope-completions not found, try development version of ropemacs"))
  28
  29 (defun company-ropemacs--grab-symbol ()
  30   (let ((symbol (company-grab-symbol)))
  31     (when symbol
  32       (cons symbol
  33             (save-excursion
  34               (let ((pos (point)))
  35                 (goto-char (- (point) (length symbol)))
  36                 (while (eq (char-before) ?.)
  37                   (goto-char (1- (point)))
  38                   (skip-syntax-backward "w_"))
  39                 (- pos (point))))))))
  40
  41 (defun company-ropemacs-doc-buffer (candidate)
  42   "Return buffer with docstring of CANDIDATE if it is available."
  43   (let ((doc (company-with-candidate-inserted candidate (rope-get-doc))))
  44     (when doc
  45       (with-current-buffer (company-doc-buffer)
  46         (insert doc)
  47         (current-buffer)))))
  48
  49 (defun company-ropemacs-location (candidate)
  50   "Return location of CANDIDATE in cons form (FILE . LINE) if it is available."
  51   (let ((location (company-with-candidate-inserted candidate
  52                     (rope-definition-location))))
  53     (when location
  54       (cons (elt location 0) (elt location 1)))))
  55
  56 (defun company-ropemacs (command &optional arg &rest ignored)
  57   "A `company-mode' completion back-end for ropemacs."
  58   (interactive (list 'interactive))
  59   (case command
  60     ('interactive (company-begin-backend 'company-ropemacs))
  61     ('prefix (and (derived-mode-p 'python-mode)
  62                   (not (company-in-string-or-comment))
  63                   (company-ropemacs--grab-symbol)))
  64     ('candidates (mapcar (lambda (element) (concat arg element))
  65                          (rope-completions)))
  66     ('doc-buffer (company-ropemacs-doc-buffer arg))
  67     ('location (company-ropemacs-location arg))))
  68
  69 (provide 'company-ropemacs)
  70 ;;; company-ropemacs.el ends here