ceph/src/boost/boost/parameter/aux_/tag.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_PARAMETER_AUX_TAG_DWA2005610_HPP
   5 # define BOOST_PARAMETER_AUX_TAG_DWA2005610_HPP
   6
   7 # include <boost/parameter/aux_/unwrap_cv_reference.hpp>
   8 # include <boost/parameter/aux_/tagged_argument.hpp>
   9
  10 namespace boost { namespace parameter { namespace aux {
  11
  12 template <class Keyword, class ActualArg
  13 #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
  14         , class = typename is_cv_reference_wrapper<ActualArg>::type
  15 #endif
  16           >
  17 struct tag
  18 {
  19     typedef tagged_argument<
  20         Keyword
  21       , typename unwrap_cv_reference<ActualArg>::type
  22     > type;
  23 };
  24
  25 #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
  26 template <class Keyword, class ActualArg>
  27 struct tag<Keyword,ActualArg,mpl::false_>
  28 {
  29     typedef tagged_argument<
  30         Keyword
  31       , ActualArg
  32     > type;
  33 };
  34 #endif
  35
  36 }}} // namespace boost::parameter::aux_
  37
  38 #endif // BOOST_PARAMETER_AUX_TAG_DWA2005610_HPP