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Diffstat (limited to 'src/third_party/boost-1.69.0/boost/type_traits/remove_reference.hpp')
-rw-r--r-- | src/third_party/boost-1.69.0/boost/type_traits/remove_reference.hpp | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/third_party/boost-1.69.0/boost/type_traits/remove_reference.hpp b/src/third_party/boost-1.69.0/boost/type_traits/remove_reference.hpp new file mode 100644 index 00000000000..70949fbb2a9 --- /dev/null +++ b/src/third_party/boost-1.69.0/boost/type_traits/remove_reference.hpp @@ -0,0 +1,59 @@ + +// (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000. +// Use, modification and distribution are subject to the Boost Software License, +// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt). +// +// See http://www.boost.org/libs/type_traits for most recent version including documentation. + +#ifndef BOOST_TT_REMOVE_REFERENCE_HPP_INCLUDED +#define BOOST_TT_REMOVE_REFERENCE_HPP_INCLUDED + +#include <boost/config.hpp> +#include <boost/detail/workaround.hpp> + +namespace boost { + + +namespace detail{ +// +// We can't filter out rvalue_references at the same level as +// references or we get ambiguities from msvc: +// +template <class T> +struct remove_rvalue_ref +{ + typedef T type; +}; +#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES +template <class T> +struct remove_rvalue_ref<T&&> +{ + typedef T type; +}; +#endif + +} // namespace detail + +template <class T> struct remove_reference{ typedef typename boost::detail::remove_rvalue_ref<T>::type type; }; +template <class T> struct remove_reference<T&>{ typedef T type; }; + +#if defined(BOOST_ILLEGAL_CV_REFERENCES) +// these are illegal specialisations; cv-qualifies applied to +// references have no effect according to [8.3.2p1], +// C++ Builder requires them though as it treats cv-qualified +// references as distinct types... +template <class T> struct remove_reference<T&const>{ typedef T type; }; +template <class T> struct remove_reference<T&volatile>{ typedef T type; }; +template <class T> struct remove_reference<T&const volatile>{ typedef T type; }; +#endif + +#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES) + + template <class T> using remove_reference_t = typename remove_reference<T>::type; + +#endif + +} // namespace boost + +#endif // BOOST_TT_REMOVE_REFERENCE_HPP_INCLUDED |