55 lines
1.7 KiB
Plaintext
55 lines
1.7 KiB
Plaintext
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// (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt).
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//
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// See http://www.boost.org/libs/type_traits for most recent version including documentation.
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#ifndef BOOST_TT_REMOVE_REFERENCE_HPP_INCLUDED
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#define BOOST_TT_REMOVE_REFERENCE_HPP_INCLUDED
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#include <boost/config.hpp>
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#include <boost/detail/workaround.hpp>
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namespace boost {
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namespace detail{
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//
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// We can't filter out rvalue_references at the same level as
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// references or we get ambiguities from msvc:
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//
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template <class T>
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struct remove_rvalue_ref
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{
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typedef T type;
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};
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#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
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template <class T>
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struct remove_rvalue_ref<T&&>
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{
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typedef T type;
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};
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#endif
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} // namespace detail
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template <class T> struct remove_reference{ typedef typename boost::detail::remove_rvalue_ref<T>::type type; };
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template <class T> struct remove_reference<T&>{ typedef T type; };
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#if defined(BOOST_ILLEGAL_CV_REFERENCES)
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// these are illegal specialisations; cv-qualifies applied to
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// references have no effect according to [8.3.2p1],
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// C++ Builder requires them though as it treats cv-qualified
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// references as distinct types...
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template <class T> struct remove_reference<T&const>{ typedef T type; };
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template <class T> struct remove_reference<T&volatile>{ typedef T type; };
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template <class T> struct remove_reference<T&const volatile>{ typedef T type; };
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#endif
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} // namespace boost
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#endif // BOOST_TT_REMOVE_REFERENCE_HPP_INCLUDED
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