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//
 
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// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
 
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// Copyright (c) 2022 Alan de Freitas (alandefreitas@gmail.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/url
 
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//
 
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#ifndef BOOST_URL_DETAIL_FNV_1A_HPP
 
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#define BOOST_URL_DETAIL_FNV_1A_HPP
 
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#include <boost/url/detail/config.hpp>
 
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#include <boost/core/detail/string_view.hpp>
 
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#include <cstddef>
 
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namespace boost {
 
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namespace urls {
 
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namespace detail {
 
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class fnv_1a
 
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{
 
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public:
 
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    using digest_type = std::size_t;
 
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#if BOOST_URL_ARCH == 64
 
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    static constexpr std::size_t const prime =
 
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        static_cast<std::size_t>(0x100000001B3ULL);
 
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    static constexpr std::size_t init_hash  =
 
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        static_cast<std::size_t>(0xcbf29ce484222325ULL);
 
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#else
 
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    static constexpr std::size_t const prime =
 
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        static_cast<std::size_t>(0x01000193UL);
 
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    static constexpr std::size_t init_hash  =
 
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        static_cast<std::size_t>(0x811C9DC5UL);
 
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#endif
 
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    explicit
 
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    fnv_1a(std::size_t salt) noexcept
 
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    : h_(init_hash + salt)
 
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    {
 
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    }
 
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    void
 
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    put(char c) noexcept
 
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    {
 
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        h_ ^= c;
 
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        h_ *= prime;
 
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    }
 
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    void
 
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    put(core::string_view s) noexcept
 
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    {
 
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        for (char c: s)
 
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        {
 
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            put(c);
 
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        }
 
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    }
 
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    digest_type
 
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    digest() const noexcept
 
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    {
 
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        return h_;
 
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    }
 
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private:
 
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    std::size_t h_;
 
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};
 
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} // detail
 
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} // urls
 
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} // boost
 
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#endif