1 2 // (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000. 3 // Use, modification and distribution are subject to the Boost Software License, 4 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at 5 // http://www.boost.org/LICENSE_1_0.txt). 6 // 7 // See http://www.boost.org/libs/type_traits for most recent version including documentation. 8 9 #ifndef BOOST_TT_REMOVE_REFERENCE_HPP_INCLUDED 10 #define BOOST_TT_REMOVE_REFERENCE_HPP_INCLUDED 11 12 #include <boost/type_traits/broken_compiler_spec.hpp> 13 #include <boost/config.hpp> 14 #include <boost/detail/workaround.hpp> 15 16 #if BOOST_WORKAROUND(BOOST_MSVC,<=1300) 17 #include <boost/type_traits/msvc/remove_reference.hpp> 18 #endif 19 20 // should be the last #include 21 #include <boost/type_traits/detail/type_trait_def.hpp> 22 23 namespace boost { 24 25 #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION 26 27 namespace detail{ 28 // 29 // We can't filter out rvalue_references at the same level as 30 // references or we get ambiguities from msvc: 31 // 32 template <class T> 33 struct remove_rvalue_ref 34 { 35 typedef T type; 36 }; 37 #ifndef BOOST_NO_RVALUE_REFERENCES 38 template <class T> 39 struct remove_rvalue_ref<T&&> 40 { 41 typedef T type; 42 }; 43 #endif 44 45 } // namespace detail 46 47 BOOST_TT_AUX_TYPE_TRAIT_DEF1(remove_reference,T,typename boost::detail::remove_rvalue_ref<T>::type) 48 BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_1(typename T,remove_reference,T&,T) 49 50 #if defined(BOOST_ILLEGAL_CV_REFERENCES) 51 // these are illegal specialisations; cv-qualifies applied to 52 // references have no effect according to [8.3.2p1], 53 // C++ Builder requires them though as it treats cv-qualified 54 // references as distinct types... 55 BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_1(typename T,remove_reference,T& const,T) 56 BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_1(typename T,remove_reference,T& volatile,T) 57 BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_1(typename T,remove_reference,T& const volatile,T) 58 #endif 59 60 #elif !BOOST_WORKAROUND(BOOST_MSVC,<=1300) 61 62 BOOST_TT_AUX_TYPE_TRAIT_DEF1(remove_reference,T,typename boost::detail::remove_reference_impl<T>::type) 63 64 #endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION 65 66 } // namespace boost 67 68 #include <boost/type_traits/detail/type_trait_undef.hpp> 69 70 #endif // BOOST_TT_REMOVE_REFERENCE_HPP_INCLUDED 71