v1/util/is_lcase_letter.hpp

0001 #ifndef BOOST_METAPARSE_V1_UTIL_IS_LCASE_LETTER_HPP
0002 #define BOOST_METAPARSE_V1_UTIL_IS_LCASE_LETTER_HPP
0003
0004 // Copyright Abel Sinkovics (abel@sinkovics.hu)  2009 - 2010.
0005 // Distributed under the Boost Software License, Version 1.0.
0006 //    (See accompanying file LICENSE_1_0.txt or copy at
0007 //          http://www.boost.org/LICENSE_1_0.txt)
0008
0009 #include <boost/metaparse/v1/util/in_range_c.hpp>
0010
0011 #include <boost/mpl/vector.hpp>
0012
0013 namespace boost
0014 {
0015   namespace metaparse
0016   {
0017     namespace v1
0018     {
0019       namespace util
0020       {
0021         template <class C = boost::mpl::na>
0022         struct is_lcase_letter : in_range_c<char, 'a', 'z'>::apply<C> {};
0023
0024         template <>
0025         struct is_lcase_letter<boost::mpl::na>
0026         {
0027           typedef is_lcase_letter type;
0028
0029           template <class C = boost::mpl::na>
0030           struct apply : is_lcase_letter<C> {};
0031         };
0032       }
0033     }
0034   }
0035 }
0036
0037 #endif
0038