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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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//
 
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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_RFC_DETAIL_FRAGMENT_PART_RULE_HPP
 
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#define BOOST_URL_RFC_DETAIL_FRAGMENT_PART_RULE_HPP
 
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#include "boost/url/rfc/pct_encoded_rule.hpp"
 
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#include "charsets.hpp"
 
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#include "boost/url/grammar/parse.hpp"
 
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namespace boost {
 
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namespace urls {
 
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namespace detail {
 
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/** Rule for fragment-part
 
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    @par BNF
 
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    @code
 
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    fragment-part   = [ "#" fragment ]
 
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    fragment        = *( pchar / "/" / "?" )
 
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    @endcode
 
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    @par Specification
 
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    @li <a href="https://datatracker.ietf.org/doc/html/rfc3986#section-3.5"
 
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        >3.5. Fragment (rfc3986)</a>
 
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*/
 
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struct fragment_part_rule_t
 
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{
 
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    struct value_type
 
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    {
 
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        pct_string_view fragment;
 
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        bool has_fragment = false;
 
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    };
 
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    system::result<value_type>
 
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    parse(
 
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        char const*& it,
 
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        char const* end
 
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            ) const noexcept
 
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    {
 
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        if( it == end ||
 
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            *it != '#')
 
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            return {};
 
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        ++it;
 
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        auto rv = grammar::parse(
 
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            it, end, pct_encoded_rule(
 
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                fragment_chars));
 
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        if(! rv)
 
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            return rv.error();
 
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        value_type t;
 
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        t.fragment = *rv;
 
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        t.has_fragment = true;
 
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        return t;
 
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    }
 
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};
 
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constexpr fragment_part_rule_t fragment_part_rule{};
 
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} // detail
 
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} // urls
 
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} // boost
 
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#endif