boost/type_traits/add_cv.hpp

   1
   2 //  (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes, Howard
   3 //  Hinnant & John Maddock 2000.
   4 //  Use, modification and distribution are subject to the Boost Software License,
   5 //  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   6 //  http://www.boost.org/LICENSE_1_0.txt).
   7 //
   8 //  See http://www.boost.org/libs/type_traits for most recent version including documentation.
   9
  10
  11 #ifndef BOOST_TT_ADD_CV_HPP_INCLUDED
  12 #define BOOST_TT_ADD_CV_HPP_INCLUDED
  13
  14 #include <boost/config.hpp>
  15
  16 // should be the last #include
  17 #include <boost/type_traits/detail/type_trait_def.hpp>
  18
  19 namespace boost {
  20
  21 // * convert a type T to a const volatile type - add_cv<T>
  22 // this is not required since the result is always
  23 // the same as "T const volatile", but it does suppress warnings
  24 // from some compilers:
  25
  26 #if defined(BOOST_MSVC)
  27 // This bogus warning will appear when add_volatile is applied to a
  28 // const volatile reference because we can't detect const volatile
  29 // references with MSVC6.
  30 #   pragma warning(push)
  31 #   pragma warning(disable:4181) // warning C4181: qualifier applied to reference type ignored
  32 #endif
  33
  34 BOOST_TT_AUX_TYPE_TRAIT_DEF1(add_cv,T,T const volatile)
  35
  36 #if defined(BOOST_MSVC)
  37 #   pragma warning(pop)
  38 #endif
  39
  40 #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
  41 BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_1(typename T,add_cv,T&,T&)
  42 #endif
  43
  44 } // namespace boost
  45
  46 #include <boost/type_traits/detail/type_trait_undef.hpp>
  47
  48 #endif // BOOST_TT_ADD_CV_HPP_INCLUDED