ceph/src/boost/boost/asio/detail/string_view.hpp

   1 //
   2 // detail/string_view.hpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2022 Christopher M. Kohlhoff (chris at kohlhoff dot com)
   6 //
   7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9 //
  10
  11 #ifndef BOOST_ASIO_DETAIL_STRING_VIEW_HPP
  12 #define BOOST_ASIO_DETAIL_STRING_VIEW_HPP
  13
  14 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  15 # pragma once
  16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  17
  18 #include <boost/asio/detail/config.hpp>
  19
  20 #if defined(BOOST_ASIO_HAS_STRING_VIEW)
  21
  22 #if defined(BOOST_ASIO_HAS_STD_STRING_VIEW)
  23 # include <string_view>
  24 #elif defined(BOOST_ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
  25 # include <experimental/string_view>
  26 #else // defined(BOOST_ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
  27 # error BOOST_ASIO_HAS_STRING_VIEW is set but no string_view is available
  28 #endif // defined(BOOST_ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
  29
  30 namespace boost {
  31 namespace asio {
  32
  33 #if defined(BOOST_ASIO_HAS_STD_STRING_VIEW)
  34 using std::basic_string_view;
  35 using std::string_view;
  36 #elif defined(BOOST_ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
  37 using std::experimental::basic_string_view;
  38 using std::experimental::string_view;
  39 #endif // defined(BOOST_ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
  40
  41 } // namespace asio
  42 } // namespace boost
  43
  44 # define BOOST_ASIO_STRING_VIEW_PARAM boost::asio::string_view
  45 #else // defined(BOOST_ASIO_HAS_STRING_VIEW)
  46 # define BOOST_ASIO_STRING_VIEW_PARAM const std::string&
  47 #endif // defined(BOOST_ASIO_HAS_STRING_VIEW)
  48
  49 #endif // BOOST_ASIO_DETAIL_STRING_VIEW_HPP