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48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
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//
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// detail/string_view.hpp
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// ~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2022 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef ASIO_DETAIL_STRING_VIEW_HPP
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#define ASIO_DETAIL_STRING_VIEW_HPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include "asio/detail/config.hpp"
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#if defined(ASIO_HAS_STRING_VIEW)
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#if defined(ASIO_HAS_STD_STRING_VIEW)
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# include <string_view>
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#elif defined(ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
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# include <experimental/string_view>
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#else // defined(ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
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# error ASIO_HAS_STRING_VIEW is set but no string_view is available
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#endif // defined(ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
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namespace asio {
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#if defined(ASIO_HAS_STD_STRING_VIEW)
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using std::basic_string_view;
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using std::string_view;
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#elif defined(ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
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using std::experimental::basic_string_view;
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using std::experimental::string_view;
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#endif // defined(ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
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} // namespace asio
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# define ASIO_STRING_VIEW_PARAM asio::string_view
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#else // defined(ASIO_HAS_STRING_VIEW)
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# define ASIO_STRING_VIEW_PARAM const std::string&
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#endif // defined(ASIO_HAS_STRING_VIEW)
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#endif // ASIO_DETAIL_STRING_VIEW_HPP
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