| ////////////////////////////////////////////////////////////////////////////// |
| // |
| // (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 |
| |
| #include <boost/move/detail/config_begin.hpp> |
| #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> |
| inline 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> |
| inline 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> |
| inline 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> |
| inline 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> |
| inline 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> |
| 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> |
| 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 |