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//
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//
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// Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)
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// Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)
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//
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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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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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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//
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// Official repository: https://github.com/CPPAlliance/http
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// Official repository: https://github.com/CPPAlliance/http
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//
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//
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#ifndef BOOST_HTTP_DETAIL_NUMBER_STRING_HPP
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#ifndef BOOST_HTTP_DETAIL_NUMBER_STRING_HPP
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#define BOOST_HTTP_DETAIL_NUMBER_STRING_HPP
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#define BOOST_HTTP_DETAIL_NUMBER_STRING_HPP
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#include <boost/http/detail/config.hpp>
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#include <boost/http/detail/config.hpp>
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#include <boost/core/detail/string_view.hpp>
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#include <boost/core/detail/string_view.hpp>
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#include <cstdint>
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#include <cstdint>
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namespace boost {
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namespace boost {
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namespace http {
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namespace http {
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namespace detail {
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namespace detail {
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// Convert integer to decimal
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// Convert integer to decimal
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// string using in-place storage
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// string using in-place storage
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class number_string
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class number_string
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{
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{
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    static constexpr unsigned buf_size = 18;
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    static constexpr unsigned buf_size = 18;
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    char buf_[buf_size + 1];
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    char buf_[buf_size + 1];
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    std::size_t size_ = 0;
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    std::size_t size_ = 0;
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    void
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    void
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    construct_unsigned(
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    construct_unsigned(
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        std::uint64_t n) noexcept
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        std::uint64_t n) noexcept
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    {
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    {
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        buf_[buf_size] = '\0';
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        buf_[buf_size] = '\0';
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        auto const end =
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        auto const end =
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            &buf_[buf_size];
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            &buf_[buf_size];
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        auto p = end;
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        auto p = end;
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        if(n == 0)
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        if(n == 0)
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        {
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        {
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            *--p = '0';
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            *--p = '0';
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        }
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        }
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        else
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        else
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        {
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        {
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            while(n > 0)
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            while(n > 0)
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            {
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            {
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                *--p = '0' + (n%10);
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                *--p = '0' + (n%10);
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                n /= 10;
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                n /= 10;
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            }
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            }
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        }
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        }
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        size_ = end - p;
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        size_ = end - p;
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    }
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    }
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public:
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public:
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    number_string() = default;
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    number_string() = default;
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    number_string(
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    number_string(
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        number_string const&) = default;
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        number_string const&) = default;
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    number_string& operator=
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    number_string& operator=
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        (number_string const&) = default;
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        (number_string const&) = default;
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    explicit
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    explicit
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    number_string(
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    number_string(
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        std::uint64_t n) noexcept
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        std::uint64_t n) noexcept
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    {
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    {
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        construct_unsigned(n);
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        construct_unsigned(n);
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    }
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    }
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    char const*
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    char const*
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    data() const noexcept
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    data() const noexcept
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    {
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    {
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        return &buf_[
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        return &buf_[
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            buf_size] - size_;
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            buf_size] - size_;
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    }
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    }
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    std::size_t
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    std::size_t
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    size() const noexcept
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    size() const noexcept
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    {
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    {
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        return size_;
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        return size_;
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    }
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    }
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    core::string_view
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    core::string_view
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    str() const noexcept
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    str() const noexcept
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    {
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    {
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        return core::string_view(
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        return core::string_view(
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            data(), size());
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            data(), size());
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    }
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    }
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    operator
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    operator
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    core::string_view() const noexcept
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    core::string_view() const noexcept
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    {
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    {
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        return str();
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        return str();
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    }
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    }
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};
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};
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} // detail
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} // detail
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} // http
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} // http
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} // boost
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} // boost
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#endif
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#endif