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// // Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail 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) // // Official repository: https://github.com/boostorg/beast // #ifndef BOOST_BEAST_DETAIL_BUFFERS_REF_HPP #define BOOST_BEAST_DETAIL_BUFFERS_REF_HPP #include <boost/beast/core/buffer_traits.hpp> #include <iterator> #include <memory> namespace boost { namespace beast { namespace detail { // A very lightweight reference to a buffer sequence template<class BufferSequence> class buffers_ref { BufferSequence const* buffers_; public: using const_iterator = buffers_iterator_type<BufferSequence>; using value_type = typename std::iterator_traits<const_iterator>::value_type; buffers_ref(buffers_ref const&) = default; buffers_ref& operator=(buffers_ref const&) = default; explicit buffers_ref(BufferSequence const& buffers) : buffers_(std::addressof(buffers)) { } const_iterator begin() const { return net::buffer_sequence_begin(*buffers_); } const_iterator end() const { return net::buffer_sequence_end(*buffers_); } }; // Return a reference to a buffer sequence template<class BufferSequence> buffers_ref<BufferSequence> make_buffers_ref(BufferSequence const& buffers) { static_assert( is_const_buffer_sequence<BufferSequence>::value, "BufferSequence type requirements not met"); return buffers_ref<BufferSequence>(buffers); } } // detail } // beast } // boost #endif