boost/boost/spirit/home/x3/char/char_parser.hpp

/*=============================================================================
    Copyright (c) 2001-2014 Joel de Guzman

    Distributed under the Boost Software License, Version 1.0. (See accompanying
    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
==============================================================================*/
#if !defined(BOOST_SPIRIT_X3_CHAR_PARSER_APR_16_2006_0906AM)
#define BOOST_SPIRIT_X3_CHAR_PARSER_APR_16_2006_0906AM

#if defined(_MSC_VER)
#pragma once
#endif

#include <boost/spirit/home/x3/core/parser.hpp>
#include <boost/spirit/home/x3/core/skip_over.hpp>
#include <boost/spirit/home/x3/support/traits/move_to.hpp>

namespace boost { namespace spirit { namespace x3
{
    ///////////////////////////////////////////////////////////////////////////
    // The base char_parser
    ///////////////////////////////////////////////////////////////////////////
    template <typename Derived>
    struct char_parser : parser<Derived>
    {
        template <typename Iterator, typename Context, typename Attribute>
        bool parse(
            Iterator& first, Iterator const& last
          , Context const& context, unused_type, Attribute& attr) const
        {
            x3::skip_over(first, last, context);

            if (first != last && this->derived().test(*first, context))
            {
                x3::traits::move_to(*first, attr);
                ++first;
                return true;
            }
            return false;
        }
    };
}}}

#endif