ceph/src/boost/libs/metaparse/include/boost/metaparse/v1/util/is_letter.hpp

   1 #ifndef BOOST_METAPARSE_V1_UTIL_IS_LETTER_HPP
   2 #define BOOST_METAPARSE_V1_UTIL_IS_LETTER_HPP
   3
   4 // Copyright Abel Sinkovics (abel@sinkovics.hu)  2009 - 2010.
   5 // Distributed under the Boost Software License, Version 1.0.
   6 //    (See accompanying file LICENSE_1_0.txt or copy at
   7 //          http://www.boost.org/LICENSE_1_0.txt)
   8
   9 #include <boost/metaparse/v1/util/is_ucase_letter.hpp>
  10 #include <boost/metaparse/v1/util/is_lcase_letter.hpp>
  11
  12 #include <boost/mpl/bool.hpp>
  13 #include <boost/mpl/vector.hpp>
  14
  15 namespace boost
  16 {
  17   namespace metaparse
  18   {
  19     namespace v1
  20     {
  21       namespace util
  22       {
  23         template <class C = boost::mpl::na>
  24         struct is_letter :
  25           boost::mpl::bool_<
  26             is_lcase_letter<C>::type::value || is_ucase_letter<C>::type::value
  27           >
  28         {};
  29
  30         template <>
  31         struct is_letter<boost::mpl::na>
  32         {
  33           typedef is_letter type;
  34
  35           template <class C = boost::mpl::na>
  36           struct apply : is_letter<C> {};
  37         };
  38       }
  39     }
  40   }
  41 }
  42
  43 #endif
  44