//
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// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail 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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// Official repository: https://github.com/boostorg/beast
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//
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#ifndef BOOST_BEAST_DETAIL_BUFFERS_RANGE_ADAPTOR_HPP
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#define BOOST_BEAST_DETAIL_BUFFERS_RANGE_ADAPTOR_HPP
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#include <boost/beast/core/buffer_traits.hpp>
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#include <iterator>
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#include <type_traits>
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namespace boost {
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namespace beast {
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namespace detail {
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template<class BufferSequence>
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class buffers_range_adaptor
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{
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BufferSequence b_;
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public:
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#if BOOST_BEAST_DOXYGEN
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using value_type = __see_below__;
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#else
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using value_type = buffers_type<BufferSequence>;
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#endif
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class const_iterator
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{
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friend class buffers_range_adaptor;
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using iter_type =
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buffers_iterator_type<BufferSequence>;
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iter_type it_{};
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const_iterator(iter_type const& it)
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: it_(it)
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{
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}
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public:
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using value_type = typename
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buffers_range_adaptor::value_type;
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using pointer = value_type const*;
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using reference = value_type;
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using difference_type = std::ptrdiff_t;
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using iterator_category =
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std::bidirectional_iterator_tag;
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const_iterator() = default;
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bool
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operator==(const_iterator const& other) const
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{
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return it_ == other.it_;
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}
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bool
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operator!=(const_iterator const& other) const
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{
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return !(*this == other);
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}
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reference
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operator*() const
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{
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return *it_;
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}
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pointer
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operator->() const = delete;
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const_iterator&
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operator++()
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{
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++it_;
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return *this;
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}
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const_iterator
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operator++(int)
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{
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auto temp = *this;
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++(*this);
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return temp;
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}
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const_iterator&
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operator--()
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{
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--it_;
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return *this;
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}
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const_iterator
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operator--(int)
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{
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auto temp = *this;
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--(*this);
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return temp;
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}
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};
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explicit
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buffers_range_adaptor(BufferSequence const& b)
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: b_(b)
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{
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}
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const_iterator
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begin() const noexcept
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{
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return {net::buffer_sequence_begin(b_)};
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}
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const_iterator
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end() const noexcept
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{
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return {net::buffer_sequence_end(b_)};
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}
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};
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} // detail
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} // beast
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} // boost
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#endif
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