-#ifndef BOOST_REF_HPP_INCLUDED
-#define BOOST_REF_HPP_INCLUDED
+/*
+ * Copyright (c) 2014 Glen Fernandes
+ *
+ * Distributed under 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)
+ */
-// MS compatible compilers support #pragma once
+#ifndef BOOST_REF_HPP
+#define BOOST_REF_HPP
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
-# pragma once
-#endif
-
-#include <boost/config.hpp>
-#include <boost/utility/addressof.hpp>
-#include <boost/mpl/bool.hpp>
-
-//
-// ref.hpp - ref/cref, useful helper functions
-//
-// Copyright (C) 1999, 2000 Jaakko Järvi (jaakko.jarvi@cs.utu.fi)
-// Copyright (C) 2001, 2002 Peter Dimov
-// Copyright (C) 2002 David Abrahams
-//
-// Permission to copy, use, modify, sell and distribute this software
-// is granted provided this copyright notice appears in all copies.
-// This software is provided "as is" without express or implied
-// warranty, and with no claim as to its suitability for any purpose.
-//
-// See http://www.boost.org/libs/bind/ref.html for documentation.
-//
-
-namespace boost
-{
-
-template<class T> class reference_wrapper
-{
-public:
- typedef T type;
+// The header file at this path is deprecated;
+// use boost/core/ref.hpp instead.
-#if defined(BOOST_MSVC) && (BOOST_MSVC < 1300)
-
- explicit reference_wrapper(T& t): t_(&t) {}
-
-#else
-
- explicit reference_wrapper(T& t): t_(boost::addressof(t)) {}
+#include <boost/core/ref.hpp>
#endif
-
- operator T& () const { return *t_; }
-
- T& get() const { return *t_; }
-
- T* get_pointer() const { return t_; }
-
-private:
-
- T* t_;
-};
-
-# if defined(__BORLANDC__) && (__BORLANDC__ <= 0x570)
-# define BOOST_REF_CONST
-# else
-# define BOOST_REF_CONST const
-# endif
-
-template<class T> inline reference_wrapper<T> BOOST_REF_CONST ref(T & t)
-{
- return reference_wrapper<T>(t);
-}
-
-template<class T> inline reference_wrapper<T const> BOOST_REF_CONST cref(T const & t)
-{
- return reference_wrapper<T const>(t);
-}
-
-# undef BOOST_REF_CONST
-
-# ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-template<typename T>
-class is_reference_wrapper
- : public mpl::false_
-{
-};
-
-template<typename T>
-class is_reference_wrapper<reference_wrapper<T> >
- : public mpl::true_
-{
-};
-
-template<typename T>
-class unwrap_reference
-{
- public:
- typedef T type;
-};
-
-template<typename T>
-class unwrap_reference<reference_wrapper<T> >
-{
- public:
- typedef T type;
-};
-# else // no partial specialization
-
-} // namespace boost
-
-#include <boost/type.hpp>
-
-namespace boost
-{
-
-namespace detail
-{
- typedef char (&yes_reference_wrapper_t)[1];
- typedef char (&no_reference_wrapper_t)[2];
-
- no_reference_wrapper_t is_reference_wrapper_test(...);
-
- template<typename T>
- yes_reference_wrapper_t is_reference_wrapper_test(type< reference_wrapper<T> >);
-
- template<bool wrapped>
- struct reference_unwrapper
- {
- template <class T>
- struct apply
- {
- typedef T type;
- };
- };
-
- template<>
- struct reference_unwrapper<true>
- {
- template <class T>
- struct apply
- {
- typedef typename T::type type;
- };
- };
-}
-
-template<typename T>
-class is_reference_wrapper
-{
- public:
- BOOST_STATIC_CONSTANT(
- bool, value = (
- sizeof(detail::is_reference_wrapper_test(type<T>()))
- == sizeof(detail::yes_reference_wrapper_t)));
-
- typedef ::boost::mpl::bool_<value> type;
-};
-
-template <typename T>
-class unwrap_reference
- : public detail::reference_unwrapper<
- is_reference_wrapper<T>::value
- >::template apply<T>
-{};
-
-# endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-
-} // namespace boost
-
-#endif // #ifndef BOOST_REF_HPP_INCLUDED