ceph/src/boost/boost/metaparse/v1/impl/is_any.hpp

   1 #ifndef BOOST_METAPARSE_V1_IMPL_IS_ANY_HPP
   2 #define BOOST_METAPARSE_V1_IMPL_IS_ANY_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/limit_one_char_except_size.hpp>
  10
  11 #include <boost/mpl/eval_if.hpp>
  12 #include <boost/mpl/bool.hpp>
  13
  14 #include <boost/preprocessor/cat.hpp>
  15 #include <boost/preprocessor/arithmetic/dec.hpp>
  16 #include <boost/preprocessor/repetition/enum_params.hpp>
  17 #include <boost/preprocessor/repetition/repeat_from_to.hpp>
  18
  19 namespace boost
  20 {
  21   namespace metaparse
  22   {
  23     namespace v1
  24     {
  25       namespace impl
  26       {
  27         template <class Stub = int>
  28         struct is_any0
  29         {
  30           template <class C>
  31           struct apply : boost::mpl::true_ {};
  32         };
  33
  34         #ifdef BOOST_METAPARSE_DEFINE_IS_ANY
  35         #  error BOOST_METAPARSE_DEFINE_IS_ANY already defined
  36         #endif
  37         #define BOOST_METAPARSE_DEFINE_IS_ANY(z, n, unused) \
  38           template <BOOST_PP_ENUM_PARAMS(n, class T)> \
  39           struct BOOST_PP_CAT(is_any, n) \
  40           { \
  41             template <class C> \
  42             struct apply : \
  43               boost::mpl::eval_if< \
  44                 boost::mpl::bool_< \
  45                   C::type::value \
  46                   == BOOST_PP_CAT(T, BOOST_PP_DEC(n))::type::value \
  47                 >, \
  48                 boost::mpl::false_, \
  49                 typename BOOST_PP_CAT(is_any, BOOST_PP_DEC(n))< \
  50                   BOOST_PP_ENUM_PARAMS(BOOST_PP_DEC(n), T) \
  51                 >::template apply<C> \
  52               > \
  53             {}; \
  54           };
  55
  56         BOOST_PP_REPEAT_FROM_TO(
  57           1,
  58           BOOST_METAPARSE_LIMIT_ONE_CHAR_EXCEPT_SIZE,
  59           BOOST_METAPARSE_DEFINE_IS_ANY,
  60           ~
  61         )
  62
  63         #undef BOOST_METAPARSE_DEFINE_IS_ANY
  64       }
  65     }
  66   }
  67 }
  68
  69 #endif
  70