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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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// Copyright (c) 2023 Alan de Freitas (alandefreitas@gmail.com)
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// Copyright (c) 2023 Alan de Freitas (alandefreitas@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/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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#ifndef BOOST_URL_GRAMMAR_IMPL_DEC_OCTET_RULE_HPP
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#ifndef BOOST_URL_GRAMMAR_IMPL_DEC_OCTET_RULE_HPP
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#define BOOST_URL_GRAMMAR_IMPL_DEC_OCTET_RULE_HPP
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#define BOOST_URL_GRAMMAR_IMPL_DEC_OCTET_RULE_HPP
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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/grammar/charset.hpp>
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#include <boost/url/grammar/charset.hpp>
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#include <boost/url/grammar/digit_chars.hpp>
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#include <boost/url/grammar/digit_chars.hpp>
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#include <boost/url/grammar/error.hpp>
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#include <boost/url/grammar/error.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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namespace grammar {
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namespace grammar {
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namespace implementation_defined {
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namespace implementation_defined {
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BOOST_URL_CXX20_CONSTEXPR_OR_INLINE
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BOOST_URL_CXX20_CONSTEXPR_OR_INLINE
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auto
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auto
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dec_octet_rule_t::
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dec_octet_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* const end
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    char const* 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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        // end
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        // end
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        BOOST_URL_CONSTEXPR_RETURN_EC(
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        BOOST_URL_CONSTEXPR_RETURN_EC(
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            error::mismatch);
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            error::mismatch);
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    }
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    }
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    if(! digit_chars(*it))
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    if(! digit_chars(*it))
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    {
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    {
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        // expected DIGIT
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        // expected DIGIT
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        BOOST_URL_CONSTEXPR_RETURN_EC(
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        BOOST_URL_CONSTEXPR_RETURN_EC(
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            error::mismatch);
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            error::mismatch);
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    }
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    }
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    unsigned v = *it - '0';
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    unsigned v = *it - '0';
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    ++it;
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    ++it;
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    if( it == end ||
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    if( it == end ||
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        ! digit_chars(*it))
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        ! digit_chars(*it))
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    {
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    {
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        return static_cast<
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        return static_cast<
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            value_type>(v);
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            value_type>(v);
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    }
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    }
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    if(v == 0)
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    if(v == 0)
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    {
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    {
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        // leading '0'
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        // leading '0'
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        BOOST_URL_CONSTEXPR_RETURN_EC(
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        BOOST_URL_CONSTEXPR_RETURN_EC(
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            error::invalid);
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            error::invalid);
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    }
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    }
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    v = (10 * v) + *it - '0';
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    v = (10 * v) + *it - '0';
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    ++it;
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    ++it;
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    if( it == end ||
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    if( it == end ||
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        ! digit_chars(*it))
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        ! digit_chars(*it))
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    {
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    {
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        return static_cast<
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        return static_cast<
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            value_type>(v);
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            value_type>(v);
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    }
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    }
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    if(v > 25)
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    if(v > 25)
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    {
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    {
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        // integer overflow
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        // integer overflow
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        BOOST_URL_CONSTEXPR_RETURN_EC(
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        BOOST_URL_CONSTEXPR_RETURN_EC(
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            error::invalid);
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            error::invalid);
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    }
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    }
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    v = (10 * v) + *it - '0';
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    v = (10 * v) + *it - '0';
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    if(v > 255)
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    if(v > 255)
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    {
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    {
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        // integer overflow
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        // integer overflow
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        BOOST_URL_CONSTEXPR_RETURN_EC(
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        BOOST_URL_CONSTEXPR_RETURN_EC(
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            error::invalid);
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            error::invalid);
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    }
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    }
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    ++it;
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    ++it;
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    if( it != end &&
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    if( it != end &&
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        digit_chars(*it))
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        digit_chars(*it))
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    {
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    {
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        // integer overflow
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        // integer overflow
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        BOOST_URL_CONSTEXPR_RETURN_EC(
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        BOOST_URL_CONSTEXPR_RETURN_EC(
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            error::invalid);
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            error::invalid);
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    }
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    }
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    return static_cast<
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    return static_cast<
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        value_type>(v);
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        value_type>(v);
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}
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}
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} // implementation_defined
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} // implementation_defined
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} // grammar
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} // grammar
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} // urls
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} // urls
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} // boost
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} // boost
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#endif
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#endif