ceph/src/boost/boost/metaparse/v1/cpp11/impl/at_c.hpp

   1 #ifndef BOOST_METAPARSE_V1_CPP11_IMPL_AT_C_HPP
   2 #define BOOST_METAPARSE_V1_CPP11_IMPL_AT_C_HPP
   3
   4 // Copyright Abel Sinkovics (abel@sinkovics.hu)  2013.
   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/cpp11/fwd/string.hpp>
  10
  11 #include <boost/mpl/char.hpp>
  12
  13 namespace boost
  14 {
  15   namespace metaparse
  16   {
  17     namespace v1
  18     {
  19       namespace impl
  20       {
  21         template <class S, int N>
  22         struct at_c;
  23
  24         template <char C, char... Cs, int N>
  25         struct at_c<string<C, Cs...>, N> : at_c<string<Cs...>, N - 1> {};
  26
  27         template <char C, char... Cs>
  28         struct at_c<string<C, Cs...>, 0> : boost::mpl::char_<C> {};
  29       }
  30     }
  31   }
  32 }
  33
  34 #endif
  35