Mercurial > hg > vamp-build-and-test
diff DEPENDENCIES/generic/include/boost/variant/detail/move.hpp @ 16:2665513ce2d3
Add boost headers
author | Chris Cannam |
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date | Tue, 05 Aug 2014 11:11:38 +0100 |
parents | |
children | c530137014c0 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DEPENDENCIES/generic/include/boost/variant/detail/move.hpp Tue Aug 05 11:11:38 2014 +0100 @@ -0,0 +1,86 @@ +//----------------------------------------------------------------------------- +// boost variant/detail/move.hpp header file +// See http://www.boost.org for updates, documentation, and revision history. +//----------------------------------------------------------------------------- +// +// Copyright (c) 2002-2003 Eric Friedman +// Copyright (c) 2002 by Andrei Alexandrescu +// +// 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) +// +// This file derivative of MoJO. Much thanks to Andrei for his initial work. +// See <http://www.cuj.com/experts/2102/alexandr.htm> for information on MOJO. +// Re-issued here under the Boost Software License, with permission of the original +// author (Andrei Alexandrescu). + + +#ifndef BOOST_VARIANT_DETAIL_MOVE_HPP +#define BOOST_VARIANT_DETAIL_MOVE_HPP + +#include <iterator> // for iterator_traits +#include <new> // for placement new + +#include "boost/config.hpp" +#include "boost/detail/workaround.hpp" +#include "boost/move/move.hpp" + +namespace boost { +namespace detail { namespace variant { + +using boost::move; + +////////////////////////////////////////////////////////////////////////// +// function template move_swap +// +// Swaps using Koenig lookup but falls back to move-swap for primitive +// types and on non-conforming compilers. +// + +#if defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP) \ + || BOOST_WORKAROUND(__GNUC__, BOOST_TESTED_AT(2)) + +// [Indicate that move_swap by overload is disabled...] +#define BOOST_NO_MOVE_SWAP_BY_OVERLOAD + +// [...and provide straight swap-by-move implementation:] +template <typename T> +inline void move_swap(T& lhs, T& rhs) +{ + T tmp( boost::detail::variant::move(lhs) ); + lhs = boost::detail::variant::move(rhs); + rhs = boost::detail::variant::move(tmp); +} + +#else// !workaround + +namespace detail { namespace move_swap { + +template <typename T> +inline void swap(T& lhs, T& rhs) +{ + T tmp( boost::detail::variant::move(lhs) ); + lhs = boost::detail::variant::move(rhs); + rhs = boost::detail::variant::move(tmp); +} + +}} // namespace detail::move_swap + +template <typename T> +inline void move_swap(T& lhs, T& rhs) +{ + using detail::move_swap::swap; + + swap(lhs, rhs); +} + +#endif // workaround + +}} // namespace detail::variant +} // namespace boost + +#endif // BOOST_VARIANT_DETAIL_MOVE_HPP + + +