text: //
  // detail/date_time_fwd.hpp
  // ~~~~~~~~~~~~~~~~~~~~~~~~
  //
  // Copyright (c) 2003-2017 Christopher M. Kohlhoff (chris at kohlhoff dot com)
  //
  // Distributed under the Boost Software License, Version 1.0. (See accompanying
  // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  //
  
  #ifndef BOOST_ASIO_DETAIL_DATE_TIME_FWD_HPP
  #define BOOST_ASIO_DETAIL_DATE_TIME_FWD_HPP
  
  #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  # pragma once
  #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  
  #include <boost/asio/detail/config.hpp>
  
  namespace boost {
  namespace date_time {
  
  template<class T, class TimeSystem>
  class base_time;
  
  } // namespace date_time
  namespace posix_time {
  
  class ptime;
  
  } // namespace posix_time
  } // namespace boost
  
  #endif // BOOST_ASIO_DETAIL_DATE_TIME_FWD_HPP
  