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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/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/grammar/error.hpp>
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#include <boost/url/grammar/error.hpp>
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#include <boost/url/grammar/literal_rule.hpp>
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#include <boost/url/grammar/literal_rule.hpp>
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#include <boost/assert.hpp>
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#include <boost/assert.hpp>
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#include <cstring>
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#include <cstring>
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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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auto
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auto
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literal_rule::
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literal_rule::
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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) const noexcept ->
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    char const* end) 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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    // Can't have a literal
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    // Can't have a literal
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    // with an empty string!
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    // with an empty string!
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    BOOST_ASSERT(n_ > 0);
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    BOOST_ASSERT(n_ > 0);
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    std::size_t n = end - it;
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    std::size_t n = end - it;
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    if(n >= n_)
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    if(n >= n_)
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    {
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    {
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        if(std::memcmp(
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        if(std::memcmp(
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            it, s_, n_) != 0)
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            it, s_, n_) != 0)
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        {
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        {
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            // non-match
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            // non-match
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            BOOST_URL_RETURN_EC(
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            BOOST_URL_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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        it += n_;
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        it += n_;
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        return core::string_view(
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        return core::string_view(
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            it - n_, it);
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            it - n_, it);
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    }
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    }
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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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        // short input
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        // short input
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        if(std::memcmp(
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        if(std::memcmp(
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            it, s_, n) != 0)
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            it, s_, n) != 0)
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        {
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        {
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            // non-match
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            // non-match
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            BOOST_URL_RETURN_EC(
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            BOOST_URL_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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        // prefix matches
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        // prefix matches
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        BOOST_URL_RETURN_EC(
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        BOOST_URL_RETURN_EC(
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            error::need_more);
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            error::need_more);
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    }
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    }
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    // end
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    // end
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    BOOST_URL_RETURN_EC(
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    BOOST_URL_RETURN_EC(
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        error::need_more);
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        error::need_more);
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}
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}
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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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