ceph/src/boost/libs/context/include/boost/context/detail/disable_overload.hpp

   1
   2 //          Copyright Oliver Kowalke 2014.
   3 // Distributed under the Boost Software License, Version 1.0.
   4 //    (See accompanying file LICENSE_1_0.txt or copy at
   5 //          http://www.boost.org/LICENSE_1_0.txt)
   6
   7 #ifndef BOOST_CONTEXT_DETAIL_DISABLE_OVERLOAD_H
   8 #define BOOST_CONTEXT_DETAIL_DISABLE_OVERLOAD_H
   9
  10 #include <type_traits>
  11
  12 #include <boost/config.hpp>
  13
  14 #include <boost/context/detail/config.hpp>
  15
  16 #ifdef BOOST_HAS_ABI_HEADERS
  17 # include BOOST_ABI_PREFIX
  18 #endif
  19
  20 namespace boost {
  21 namespace context {
  22 namespace detail {
  23
  24 // http://ericniebler.com/2013/08/07/universal-references-and-the-copy-constructo/
  25 template< typename X, typename Y >
  26 using disable_overload =
  27     typename std::enable_if<
  28         ! std::is_base_of<
  29             X,
  30             typename std::decay< Y >::type
  31         >::value
  32     >::type;
  33
  34 }}}
  35
  36 #ifdef BOOST_HAS_ABI_HEADERS
  37 #include BOOST_ABI_SUFFIX
  38 #endif
  39
  40 #endif // BOOST_CONTEXT_DETAIL_DISABLE_OVERLOAD_H