src/runnable_item.h

   1 /***************************************************************************
   2  *   Copyright (C) 2008-2017 by Andrzej Rybczak                            *
   3  *   electricityispower@gmail.com                                          *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.              *
  19  ***************************************************************************/
  20
  21 #ifndef NCMPCPP_EXEC_ITEM_H
  22 #define NCMPCPP_EXEC_ITEM_H
  23
  24 #include <functional>
  25
  26 template <typename ItemT, typename FunctionT>
  27 struct RunnableItem
  28 {
  29         typedef ItemT Item;
  30         typedef std::function<FunctionT> Function;
  31
  32         RunnableItem() { }
  33         template <typename Arg1, typename Arg2>
  34         RunnableItem(Arg1 &&opt, Arg2 &&f)
  35         : m_item(std::forward<Arg1>(opt)), m_f(std::forward<Arg2>(f)) { }
  36
  37         template <typename... Args>
  38         typename Function::result_type run(Args&&... args) const
  39         {
  40                 return m_f(std::forward<Args>(args)...);
  41         }
  42
  43         Item &item() { return m_item; }
  44         const Item &item() const { return m_item; }
  45
  46 private:
  47         Item m_item;
  48         Function m_f;
  49 };
  50
  51 #endif // NCMPCPP_EXEC_ITEM_H