47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
//
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// Copyright (c) 2019-2024 Ruben Perez Hidalgo (rubenperez038 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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#ifndef BOOST_MYSQL_IMPL_INTERNAL_PROTOCOL_STATIC_BUFFER_HPP
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#define BOOST_MYSQL_IMPL_INTERNAL_PROTOCOL_STATIC_BUFFER_HPP
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// A very simplified variable-length buffer with fixed max-size
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#include <boost/assert.hpp>
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#include <boost/core/span.hpp>
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#include <array>
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#include <cstring>
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namespace boost {
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namespace mysql {
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namespace detail {
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template <std::size_t max_size>
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class static_buffer
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{
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std::array<std::uint8_t, max_size> buffer_{};
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std::size_t size_{};
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public:
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static_buffer() noexcept = default;
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span<const std::uint8_t> to_span() const noexcept { return {buffer_.data(), size_}; }
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void append(const void* data, std::size_t data_size) noexcept
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{
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std::size_t new_size = size_ + data_size;
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BOOST_ASSERT(new_size <= max_size);
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std::memcpy(buffer_.data() + size_, data, data_size);
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size_ = new_size;
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}
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void clear() noexcept { size_ = 0; }
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};
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} // namespace detail
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} // namespace mysql
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} // namespace boost
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#endif
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