x3/char/char_parser.hpp

0001 /*=============================================================================
0002     Copyright (c) 2001-2014 Joel de Guzman
0003
0004     Distributed under the Boost Software License, Version 1.0. (See accompanying
0005     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0006 ==============================================================================*/
0007 #if !defined(BOOST_SPIRIT_X3_CHAR_PARSER_APR_16_2006_0906AM)
0008 #define BOOST_SPIRIT_X3_CHAR_PARSER_APR_16_2006_0906AM
0009
0010 #include <boost/spirit/home/x3/core/parser.hpp>
0011 #include <boost/spirit/home/x3/core/skip_over.hpp>
0012 #include <boost/spirit/home/x3/support/traits/move_to.hpp>
0013 #include <boost/spirit/home/x3/support/no_case.hpp>
0014
0015 namespace boost { namespace spirit { namespace x3
0016 {
0017     ///////////////////////////////////////////////////////////////////////////
0018     // The base char_parser
0019     ///////////////////////////////////////////////////////////////////////////
0020     template <typename Derived>
0021     struct char_parser : parser<Derived>
0022     {
0023         template <typename Iterator, typename Context, typename Attribute>
0024         bool parse(
0025             Iterator& first, Iterator const& last
0026           , Context const& context, unused_type, Attribute& attr) const
0027         {
0028             x3::skip_over(first, last, context);
0029             if (first != last && this->derived().test(*first, context))
0030             {
0031                 x3::traits::move_to(*first, attr);
0032                 ++first;
0033                 return true;
0034             }
0035             return false;
0036         }
0037     };
0038 }}}
0039
0040 #endif