Squashed 'third_party/boostorg/move/' content from commit d503fbe
Change-Id: I5f8ac37161a1044b02ffb1f59cf15622fc6acd17
git-subtree-dir: third_party/boostorg/move
git-subtree-split: d503fbe1c8334fa8885e67cb83c96aeaf3938555
diff --git a/include/boost/move/utility.hpp b/include/boost/move/utility.hpp
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+++ b/include/boost/move/utility.hpp
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+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2012-2012.
+// 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)
+//
+// See http://www.boost.org/libs/move for documentation.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//! \file
+//! This header includes core utilities from <tt><boost/move/utility_core.hpp></tt> and defines
+//! some more advanced utilities such as:
+
+#ifndef BOOST_MOVE_MOVE_UTILITY_HPP
+#define BOOST_MOVE_MOVE_UTILITY_HPP
+
+#ifndef BOOST_CONFIG_HPP
+# include <boost/config.hpp>
+#endif
+#
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+# pragma once
+#endif
+
+#include <boost/move/detail/config_begin.hpp>
+#include <boost/move/detail/workaround.hpp> //forceinline
+#include <boost/move/utility_core.hpp>
+#include <boost/move/traits.hpp>
+
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && !defined(BOOST_MOVE_DOXYGEN_INVOKED)
+
+ namespace boost {
+
+ //////////////////////////////////////////////////////////////////////////////
+ //
+ // move_if_noexcept()
+ //
+ //////////////////////////////////////////////////////////////////////////////
+
+ template <class T>
+ BOOST_MOVE_FORCEINLINE typename ::boost::move_detail::enable_if_c
+ < enable_move_utility_emulation<T>::value && !has_move_emulation_enabled<T>::value
+ , typename ::boost::move_detail::add_const<T>::type &
+ >::type
+ move_if_noexcept(T& x) BOOST_NOEXCEPT
+ {
+ return x;
+ }
+
+ template <class T>
+ BOOST_MOVE_FORCEINLINE typename ::boost::move_detail::enable_if_c
+ < enable_move_utility_emulation<T>::value && has_move_emulation_enabled<T>::value
+ && ::boost::move_detail::is_nothrow_move_constructible_or_uncopyable<T>::value, rv<T>&>::type
+ move_if_noexcept(T& x) BOOST_NOEXCEPT
+ {
+ return *static_cast<rv<T>* >(::boost::move_detail::addressof(x));
+ }
+
+ template <class T>
+ BOOST_MOVE_FORCEINLINE typename ::boost::move_detail::enable_if_c
+ < enable_move_utility_emulation<T>::value && has_move_emulation_enabled<T>::value
+ && ::boost::move_detail::is_nothrow_move_constructible_or_uncopyable<T>::value
+ , rv<T>&
+ >::type
+ move_if_noexcept(rv<T>& x) BOOST_NOEXCEPT
+ {
+ return x;
+ }
+
+ template <class T>
+ BOOST_MOVE_FORCEINLINE typename ::boost::move_detail::enable_if_c
+ < enable_move_utility_emulation<T>::value && has_move_emulation_enabled<T>::value
+ && !::boost::move_detail::is_nothrow_move_constructible_or_uncopyable<T>::value
+ , typename ::boost::move_detail::add_const<T>::type &
+ >::type
+ move_if_noexcept(T& x) BOOST_NOEXCEPT
+ {
+ return x;
+ }
+
+ template <class T>
+ BOOST_MOVE_FORCEINLINE typename ::boost::move_detail::enable_if_c
+ < enable_move_utility_emulation<T>::value && has_move_emulation_enabled<T>::value
+ && !::boost::move_detail::is_nothrow_move_constructible_or_uncopyable<T>::value
+ , typename ::boost::move_detail::add_const<T>::type &
+ >::type
+ move_if_noexcept(rv<T>& x) BOOST_NOEXCEPT
+ {
+ return x;
+ }
+
+ } //namespace boost
+
+#else //#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && !defined(BOOST_MOVE_DOXYGEN_INVOKED)
+
+ #if defined(BOOST_MOVE_USE_STANDARD_LIBRARY_MOVE)
+ #include <utility>
+
+ namespace boost{
+
+ using ::std::move_if_noexcept;
+
+ } //namespace boost
+
+ #else //!BOOST_MOVE_USE_STANDARD_LIBRARY_MOVE
+
+ namespace boost {
+
+ //////////////////////////////////////////////////////////////////////////////
+ //
+ // move_if_noexcept()
+ //
+ //////////////////////////////////////////////////////////////////////////////
+ #if defined(BOOST_MOVE_DOXYGEN_INVOKED)
+ //! This function provides a way to convert a reference into a rvalue reference
+ //! in compilers with rvalue references. For other compilers converts T & into
+ //! <i>::boost::rv<T> &</i> so that move emulation is activated. Reference
+ //! would be converted to rvalue reference only if input type is nothrow move
+ //! constructible or if it has no copy constructor. In all other cases const
+ //! reference would be returned
+ template <class T>
+ rvalue_reference_or_const_lvalue_reference move_if_noexcept(input_reference) noexcept;
+
+ #else //BOOST_MOVE_DOXYGEN_INVOKED
+
+ template <class T>
+ BOOST_MOVE_FORCEINLINE typename ::boost::move_detail::enable_if_c
+ < ::boost::move_detail::is_nothrow_move_constructible_or_uncopyable<T>::value, T&&>::type
+ move_if_noexcept(T& x) BOOST_NOEXCEPT
+ { return ::boost::move(x); }
+
+ template <class T>
+ BOOST_MOVE_FORCEINLINE typename ::boost::move_detail::enable_if_c
+ < !::boost::move_detail::is_nothrow_move_constructible_or_uncopyable<T>::value, const T&>::type
+ move_if_noexcept(T& x) BOOST_NOEXCEPT
+ { return x; }
+
+ #endif //BOOST_MOVE_DOXYGEN_INVOKED
+
+ } //namespace boost {
+
+ #endif //#if defined(BOOST_MOVE_USE_STANDARD_LIBRARY_MOVE)
+
+#endif //BOOST_NO_CXX11_RVALUE_REFERENCES
+
+#include <boost/move/detail/config_end.hpp>
+
+#endif //#ifndef BOOST_MOVE_MOVE_UTILITY_HPP