3rdparty/boost/boost/detail/is_xxx.hpp

   1 // Copyright David Abrahams 2005. Distributed under the Boost
   2 // Software License, Version 1.0. (See accompanying
   3 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   4 #ifndef BOOST_DETAIL_IS_XXX_DWA20051011_HPP
   5 # define BOOST_DETAIL_IS_XXX_DWA20051011_HPP
   6
   7 # include <boost/config.hpp>
   8 # include <boost/mpl/bool.hpp>
   9 # include <boost/preprocessor/enum_params.hpp>
  10
  11
  12 #  define BOOST_DETAIL_IS_XXX_DEF(name, qualified_name, nargs)  \
  13 template <class T>                                              \
  14 struct is_##name : mpl::false_                                  \
  15 {                                                               \
  16 };                                                              \
  17                                                                 \
  18 template < BOOST_PP_ENUM_PARAMS_Z(1, nargs, class T) >          \
  19 struct is_##name<                                               \
  20    qualified_name< BOOST_PP_ENUM_PARAMS_Z(1, nargs, T) >        \
  21 >                                                               \
  22    : mpl::true_                                                 \
  23 {                                                               \
  24 };
  25
  26
  27 #endif // BOOST_DETAIL_IS_XXX_DWA20051011_HPP