Chris@16: //
Chris@16: // placeholders.hpp
Chris@16: // ~~~~~~~~~~~~~~~~
Chris@16: //
Chris@101: // Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: 
Chris@16: #ifndef BOOST_ASIO_PLACEHOLDERS_HPP
Chris@16: #define BOOST_ASIO_PLACEHOLDERS_HPP
Chris@16: 
Chris@16: #if defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: # pragma once
Chris@16: #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: 
Chris@16: #include <boost/asio/detail/config.hpp>
Chris@16: 
Chris@16: #if defined(BOOST_ASIO_HAS_BOOST_BIND)
Chris@16: # include <boost/bind/arg.hpp>
Chris@16: #endif // defined(BOOST_ASIO_HAS_BOOST_BIND)
Chris@16: 
Chris@16: #include <boost/asio/detail/push_options.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace asio {
Chris@16: namespace placeholders {
Chris@16: 
Chris@16: #if defined(GENERATING_DOCUMENTATION)
Chris@16: 
Chris@16: /// An argument placeholder, for use with boost::bind(), that corresponds to
Chris@16: /// the error argument of a handler for any of the asynchronous functions.
Chris@16: unspecified error;
Chris@16: 
Chris@16: /// An argument placeholder, for use with boost::bind(), that corresponds to
Chris@16: /// the bytes_transferred argument of a handler for asynchronous functions such
Chris@16: /// as boost::asio::basic_stream_socket::async_write_some or
Chris@16: /// boost::asio::async_write.
Chris@16: unspecified bytes_transferred;
Chris@16: 
Chris@16: /// An argument placeholder, for use with boost::bind(), that corresponds to
Chris@16: /// the iterator argument of a handler for asynchronous functions such as
Chris@16: /// boost::asio::basic_resolver::async_resolve.
Chris@16: unspecified iterator;
Chris@16: 
Chris@16: /// An argument placeholder, for use with boost::bind(), that corresponds to
Chris@16: /// the signal_number argument of a handler for asynchronous functions such as
Chris@16: /// boost::asio::signal_set::async_wait.
Chris@16: unspecified signal_number;
Chris@16: 
Chris@16: #elif defined(BOOST_ASIO_HAS_BOOST_BIND)
Chris@16: # if defined(__BORLANDC__) || defined(__GNUC__)
Chris@16: 
Chris@16: inline boost::arg<1> error()
Chris@16: {
Chris@16:   return boost::arg<1>();
Chris@16: }
Chris@16: 
Chris@16: inline boost::arg<2> bytes_transferred()
Chris@16: {
Chris@16:   return boost::arg<2>();
Chris@16: }
Chris@16: 
Chris@16: inline boost::arg<2> iterator()
Chris@16: {
Chris@16:   return boost::arg<2>();
Chris@16: }
Chris@16: 
Chris@16: inline boost::arg<2> signal_number()
Chris@16: {
Chris@16:   return boost::arg<2>();
Chris@16: }
Chris@16: 
Chris@16: # else
Chris@16: 
Chris@16: namespace detail
Chris@16: {
Chris@16:   template <int Number>
Chris@16:   struct placeholder
Chris@16:   {
Chris@16:     static boost::arg<Number>& get()
Chris@16:     {
Chris@16:       static boost::arg<Number> result;
Chris@16:       return result;
Chris@16:     }
Chris@16:   };
Chris@16: }
Chris@16: 
Chris@16: #  if defined(BOOST_ASIO_MSVC) && (BOOST_ASIO_MSVC < 1400)
Chris@16: 
Chris@16: static boost::arg<1>& error
Chris@16:   = boost::asio::placeholders::detail::placeholder<1>::get();
Chris@16: static boost::arg<2>& bytes_transferred
Chris@16:   = boost::asio::placeholders::detail::placeholder<2>::get();
Chris@16: static boost::arg<2>& iterator
Chris@16:   = boost::asio::placeholders::detail::placeholder<2>::get();
Chris@16: static boost::arg<2>& signal_number
Chris@16:   = boost::asio::placeholders::detail::placeholder<2>::get();
Chris@16: 
Chris@16: #  else
Chris@16: 
Chris@16: namespace
Chris@16: {
Chris@16:   boost::arg<1>& error
Chris@16:     = boost::asio::placeholders::detail::placeholder<1>::get();
Chris@16:   boost::arg<2>& bytes_transferred
Chris@16:     = boost::asio::placeholders::detail::placeholder<2>::get();
Chris@16:   boost::arg<2>& iterator
Chris@16:     = boost::asio::placeholders::detail::placeholder<2>::get();
Chris@16:   boost::arg<2>& signal_number
Chris@16:     = boost::asio::placeholders::detail::placeholder<2>::get();
Chris@16: } // namespace
Chris@16: 
Chris@16: #  endif
Chris@16: # endif
Chris@16: #endif
Chris@16: 
Chris@16: } // namespace placeholders
Chris@16: } // namespace asio
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #include <boost/asio/detail/pop_options.hpp>
Chris@16: 
Chris@16: #endif // BOOST_ASIO_PLACEHOLDERS_HPP