luabind/detail/most_derived.hpp

   1 // Copyright (c) 2005 Daniel Wallin and Arvid Norberg
   2
   3 // Permission is hereby granted, free of charge, to any person obtaining a
   4 // copy of this software and associated documentation files (the "Software"),
   5 // to deal in the Software without restriction, including without limitation
   6 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
   7 // and/or sell copies of the Software, and to permit persons to whom the
   8 // Software is furnished to do so, subject to the following conditions:
   9
  10 // The above copyright notice and this permission notice shall be included
  11 // in all copies or substantial portions of the Software.
  12
  13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
  14 // ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
  15 // TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
  16 // PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
  17 // SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
  18 // ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  19 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
  21 // OR OTHER DEALINGS IN THE SOFTWARE.
  22
  23 #ifndef MOST_DERIVED_051018_HPP
  24 # define MOST_DERIVED_051018_HPP
  25
  26 # include <boost/mpl/if.hpp>
  27 # include <boost/type_traits/is_base_and_derived.hpp>
  28
  29 namespace luabind { namespace detail {
  30
  31 template<class Class, class WrappedClass>
  32 struct most_derived
  33 {
  34     typedef typename boost::mpl::if_<
  35         boost::is_base_and_derived<Class, WrappedClass>
  36       , WrappedClass
  37       , Class
  38     >::type type;
  39 };
  40
  41 }} // namespace luabind::detail
  42
  43 #endif // MOST_DERIVED_051018_HPP
  44