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