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company-ropemacs.el
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company-ropemacs.el
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;;; company-ropemacs.el --- company-mode completion back-end for ropemacs
;; Copyright (C) 2009-2011, 2013-2014 Free Software Foundation, Inc.
;; Author: Nikolaj Schumacher
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;;; Code:
(require 'cl-lib)
(defun company-ropemacs--grab-symbol ()
(let ((symbol (company-grab-symbol)))
(when symbol
(cons symbol
(save-excursion
(let ((pos (point)))
(goto-char (- (point) (length symbol)))
(while (eq (char-before) ?.)
(goto-char (1- (point)))
(skip-syntax-backward "w_"))
(- pos (point))))))))
(defun company-ropemacs-doc-buffer (candidate)
"Return buffer with docstring of CANDIDATE if it is available."
(let ((doc (company-with-candidate-inserted candidate (rope-get-doc))))
(when doc
(company-doc-buffer doc))))
(defun company-ropemacs-location (candidate)
"Return location of CANDIDATE in cons form (FILE . LINE) if it is available."
(let ((location (company-with-candidate-inserted candidate
(rope-definition-location))))
(when location
(cons (elt location 0) (elt location 1)))))
(defun company-ropemacs (command &optional arg &rest ignored)
"`company-mode' completion back-end for ropemacs.
Depends on third-party code: Pymacs (both Python and Emacs packages),
rope, ropemacs and ropemode. Requires `ropemacs-mode' to be on."
(interactive (list 'interactive))
(cl-case command
(interactive (company-begin-backend 'company-ropemacs))
(prefix (and (bound-and-true-p ropemacs-mode)
(not (company-in-string-or-comment))
(company-ropemacs--grab-symbol)))
(candidates (mapcar (lambda (element) (concat arg element))
(rope-completions)))
(doc-buffer (company-ropemacs-doc-buffer arg))
(location (company-ropemacs-location arg))))
(provide 'company-ropemacs)
;;; company-ropemacs.el ends here