;;; company-tempo.el --- a company-mode completion back-end for tempo
;;
;; Copyright (C) 2009 Nikolaj Schumacher
;;
;; This file is part of company 0.3.
;;
;; This program 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 2
;; of the License, or (at your option) any later version.
;;
;; This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.

(require 'company)
(eval-when-compile (require 'cl))
(require 'tempo)

(defsubst company-tempo-lookup (match)
  (cdr (assoc match (tempo-build-collection))))

(defun company-tempo-insert (match)
  "Replace MATCH with the expanded tempo template."
  (search-backward match)
  (goto-char (match-beginning 0))
  (replace-match "")
  (call-interactively (company-tempo-lookup match)))

(defsubst company-tempo-meta (match)
  (let ((templ (company-tempo-lookup match))
        doc)
    (and templ
         (setq doc (documentation templ t))
         (car (split-string doc "\n" t)))))

;;;###autoload
(defun company-tempo (command &optional arg &rest ignored)
  "A `company-mode' completion back-end for tempo."
  (interactive (list 'interactive))
  (case command
    ('interactive (company-begin-backend 'company-tempo
                                         'company-tempo-insert))
    ('prefix (or (car (tempo-find-match-string tempo-match-finder)) ""))
    ('candidates (all-completions arg (tempo-build-collection)))
    ('meta (company-tempo-meta arg))
    ('require-match t)
    ('sorted t)))

(provide 'company-tempo)
;;; company-tempo.el ends here