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

   1 ;;; company-pysmell.el --- company-mode completion back-end for pysmell.el
   2
   3 ;; Copyright (C) 2009-2011, 2013-2014  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 ;; The main problem with using this backend is installing Pysmell.
  26 ;; I couldn't manage to do that. --Dmitry
  27
  28 ;;; Code:
  29
  30 (if t (require 'pysmell))               ;Don't load during compilation.
  31 (require 'company)
  32 (require 'cl-lib)
  33
  34 (defvar-local company-pysmell--available-p 'unknown)
  35
  36 (defun company-pysmell--available-p ()
  37   (if (eq company-pysmell--available-p 'unknown)
  38       (setq company-pysmell--available-p
  39             (locate-dominating-file buffer-file-name "PYSMELLTAGS"))
  40     company-pysmell--available-p))
  41
  42 (defun company-pysmell--grab-symbol ()
  43   (let ((symbol (company-grab-symbol)))
  44     (when symbol
  45       (cons symbol
  46             (save-excursion
  47               (let ((pos (point)))
  48                 (goto-char (- (point) (length symbol)))
  49                 (while (eq (char-before) ?.)
  50                   (goto-char (1- (point)))
  51                   (skip-syntax-backward "w_"))
  52                 (- pos (point))))))))
  53
  54 ;;;###autoload
  55 (defun company-pysmell (command &optional arg &rest ignored)
  56   "`company-mode' completion back-end for pysmell.
  57 This requires pysmell.el and pymacs.el."
  58   (interactive (list 'interactive))
  59   (cl-case command
  60     (interactive (company-begin-backend 'company-pysmell))
  61     (prefix (and (derived-mode-p 'python-mode)
  62                  buffer-file-name
  63                  (not (company-in-string-or-comment))
  64                  (company-pysmell--available-p)
  65                  (company-pysmell--grab-symbol)))
  66     (candidates (delete "" (pysmell-get-all-completions)))))
  67
  68 (provide 'company-pysmell)
  69 ;;; company-pysmell.el ends here