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//
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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) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot 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/boostorg/url
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// Official repository: https://github.com/boostorg/url
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//
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//
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#include <boost/url/detail/config.hpp>
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#include <boost/url/detail/config.hpp>
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#include <boost/url/rfc/query_rule.hpp>
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#include <boost/url/rfc/query_rule.hpp>
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#include "detail/charsets.hpp"
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#include "detail/charsets.hpp"
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#include <boost/url/error.hpp>
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#include <boost/url/error.hpp>
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#include <boost/url/grammar/hexdig_chars.hpp>
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#include <boost/url/grammar/hexdig_chars.hpp>
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namespace boost {
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namespace boost {
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namespace urls {
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namespace urls {
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auto
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auto
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implementation_defined::query_rule_t::
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implementation_defined::query_rule_t::
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parse(
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parse(
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    char const*& it,
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    char const*& it,
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    char const* end
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    char const* end
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        ) const noexcept ->
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        ) const noexcept ->
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    system::result<value_type>
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    system::result<value_type>
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{
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{
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    if(it == end)
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    if(it == end)
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    {
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    {
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        // empty string = 1 param
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        // empty string = 1 param
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        core::string_view str(it, 0);
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        core::string_view str(it, 0);
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        return params_encoded_view(
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        return params_encoded_view(
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            detail::query_ref(str, 0, 1));
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            detail::query_ref(str, 0, 1));
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    }
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    }
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    auto const it0 = it;
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    auto const it0 = it;
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    std::size_t dn = 0;
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    std::size_t dn = 0;
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    std::size_t nparam = 1;
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    std::size_t nparam = 1;
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    while(it != end)
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    while(it != end)
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    {
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    {
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        if(*it == '&')
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        if(*it == '&')
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        {
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        {
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            ++nparam;
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            ++nparam;
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            ++it;
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            ++it;
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            continue;
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            continue;
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        }
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        }
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        if(detail::query_chars(*it))
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        if(detail::query_chars(*it))
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        {
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        {
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            ++it;
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            ++it;
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            continue;
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            continue;
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        }
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        }
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        if(*it == '%')
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        if(*it == '%')
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        {
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        {
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            if(end - it < 3 ||
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            if(end - it < 3 ||
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                (!grammar::hexdig_chars(it[1]) ||
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                (!grammar::hexdig_chars(it[1]) ||
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                 !grammar::hexdig_chars(it[2])))
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                 !grammar::hexdig_chars(it[2])))
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            {
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            {
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                // missing valid HEXDIG
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                // missing valid HEXDIG
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                break;
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                break;
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            }
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            }
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            it += 3;
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            it += 3;
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            dn += 2;
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            dn += 2;
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            continue;
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            continue;
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        }
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        }
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        // got reserved character
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        // got reserved character
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        break;
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        break;
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    }
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    }
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    std::size_t const n(it - it0);
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    std::size_t const n(it - it0);
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    core::string_view str(it0, n);
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    core::string_view str(it0, n);
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    return params_encoded_view(
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    return params_encoded_view(
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        detail::query_ref(
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        detail::query_ref(
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            str, n - dn, nparam));
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            str, n - dn, nparam));
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}
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}
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} // urls
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} // urls
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} // boost
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} // boost
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