#ifndef BOOST_ASIO_DETAIL_STRING_VIEW_HPP
#define BOOST_ASIO_DETAIL_STRING_VIEW_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif
#include <boost/asio/detail/config.hpp>
#if defined(BOOST_ASIO_HAS_STRING_VIEW)
#if defined(BOOST_ASIO_HAS_STD_STRING_VIEW)
# include <string_view>
#elif defined(BOOST_ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
# include <experimental/string_view>
#else
# error BOOST_ASIO_HAS_STRING_VIEW is set but no string_view is available
#endif
namespace boost {
namespace asio {
#if defined(BOOST_ASIO_HAS_STD_STRING_VIEW)
using std::basic_string_view;
using std::string_view;
#elif defined(BOOST_ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
using std::experimental::basic_string_view;
using std::experimental::string_view;
#endif
} }
# define BOOST_ASIO_STRING_VIEW_PARAM boost::asio::string_view
#else
# define BOOST_ASIO_STRING_VIEW_PARAM const std::string&
#endif
#endif