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

   1 ;;; company-ropemacs.el --- company-mode completion back-end for ropemacs
   2
   3 ;; Copyright (C) 2009-2011, 2013  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 (eval-when-compile (require 'cl))
  29
  30 (defun company-ropemacs--grab-symbol ()
  31   (let ((symbol (company-grab-symbol)))
  32     (when symbol
  33       (cons symbol
  34             (save-excursion
  35               (let ((pos (point)))
  36                 (goto-char (- (point) (length symbol)))
  37                 (while (eq (char-before) ?.)
  38                   (goto-char (1- (point)))
  39                   (skip-syntax-backward "w_"))
  40                 (- pos (point))))))))
  41
  42 (defun company-ropemacs-doc-buffer (candidate)
  43   "Return buffer with docstring of CANDIDATE if it is available."
  44   (let ((doc (company-with-candidate-inserted candidate (rope-get-doc))))
  45     (when doc
  46       (company-doc-buffer doc))))
  47
  48 (defun company-ropemacs-location (candidate)
  49   "Return location of CANDIDATE in cons form (FILE . LINE) if it is available."
  50   (let ((location (company-with-candidate-inserted candidate
  51                     (rope-definition-location))))
  52     (when location
  53       (cons (elt location 0) (elt location 1)))))
  54
  55 (defun company-ropemacs (command &optional arg &rest ignored)
  56   "`company-mode' completion back-end for ropemacs.
  57
  58 Depends on third-party code: Pymacs (both Python and Emacs packages),
  59 rope, ropemacs and ropemode."
  60   (interactive (list 'interactive))
  61   (case command
  62     (init (when (and (derived-mode-p 'python-mode)
  63                      (not (fboundp 'rope-completions)))
  64             (require 'pymacs)
  65             (pymacs-load "ropemacs" "rope-")))
  66     (interactive (company-begin-backend 'company-ropemacs))
  67     (prefix (and (derived-mode-p 'python-mode)
  68                  (not (company-in-string-or-comment))
  69                  (company-ropemacs--grab-symbol)))
  70     (candidates (mapcar (lambda (element) (concat arg element))
  71                         (rope-completions)))
  72     (doc-buffer (company-ropemacs-doc-buffer arg))
  73     (location (company-ropemacs-location arg))))
  74
  75 (provide 'company-ropemacs)
  76 ;;; company-ropemacs.el ends here