boost/type_traits/remove_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_REMOVE_CV_HPP_INCLUDED
  12 #define BOOST_TT_REMOVE_CV_HPP_INCLUDED
  13
  14 #include <boost/type_traits/broken_compiler_spec.hpp>
  15 #include <boost/type_traits/detail/cv_traits_impl.hpp>
  16 #include <boost/config.hpp>
  17 #include <boost/detail/workaround.hpp>
  18
  19 #include <cstddef>
  20
  21 #if BOOST_WORKAROUND(BOOST_MSVC,<=1300)
  22 #include <boost/type_traits/msvc/remove_cv.hpp>
  23 #endif
  24
  25 // should be the last #include
  26 #include <boost/type_traits/detail/type_trait_def.hpp>
  27
  28 namespace boost {
  29
  30 #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
  31
  32 namespace detail{
  33
  34 template <class T>
  35 struct rvalue_ref_filter_rem_cv
  36 {
  37    typedef typename boost::detail::cv_traits_imp<T*>::unqualified_type type;
  38 };
  39
  40 #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
  41 //
  42 // We can't filter out rvalue_references at the same level as
  43 // references or we get ambiguities from msvc:
  44 //
  45 template <class T>
  46 struct rvalue_ref_filter_rem_cv<T&&>
  47 {
  48    typedef T&& type;
  49 };
  50 #endif
  51
  52 }
  53
  54
  55 //  convert a type T to a non-cv-qualified type - remove_cv<T>
  56 BOOST_TT_AUX_TYPE_TRAIT_DEF1(remove_cv,T,typename boost::detail::rvalue_ref_filter_rem_cv<T>::type)
  57 BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_1(typename T,remove_cv,T&,T&)
  58 #if !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS)
  59 BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_2(typename T,std::size_t N,remove_cv,T const[N],T type[N])
  60 BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_2(typename T,std::size_t N,remove_cv,T volatile[N],T type[N])
  61 BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_2(typename T,std::size_t N,remove_cv,T const volatile[N],T type[N])
  62 #endif
  63
  64 #elif !BOOST_WORKAROUND(BOOST_MSVC,<=1300)
  65
  66 namespace detail {
  67 template <typename T>
  68 struct remove_cv_impl
  69 {
  70     typedef typename remove_volatile_impl<
  71           typename remove_const_impl<T>::type
  72         >::type type;
  73 };
  74 }
  75
  76 BOOST_TT_AUX_TYPE_TRAIT_DEF1(remove_cv,T,typename boost::detail::remove_cv_impl<T>::type)
  77
  78 #endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
  79
  80 } // namespace boost
  81
  82 #include <boost/type_traits/detail/type_trait_undef.hpp>
  83
  84 #endif // BOOST_TT_REMOVE_CV_HPP_INCLUDED