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Diffstat (limited to '3rdParty/Boost/src/boost/variant/detail/move.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/variant/detail/move.hpp | 127 |
1 files changed, 15 insertions, 112 deletions
diff --git a/3rdParty/Boost/src/boost/variant/detail/move.hpp b/3rdParty/Boost/src/boost/variant/detail/move.hpp index 572cfbb..24f8310 100644 --- a/3rdParty/Boost/src/boost/variant/detail/move.hpp +++ b/3rdParty/Boost/src/boost/variant/detail/move.hpp @@ -5,6 +5,7 @@ // // Copyright (c) 2002-2003 Eric Friedman // Copyright (c) 2002 by Andrei Alexandrescu +// Copyright (c) 2013 Antony Polukhin // // Use, modification and distribution are subject to the // Boost Software License, Version 1.0. (See accompanying file @@ -24,92 +25,11 @@ #include "boost/config.hpp" #include "boost/detail/workaround.hpp" -#include "boost/mpl/if.hpp" -#include "boost/type_traits/is_base_and_derived.hpp" +#include "boost/move/move.hpp" -namespace boost { -namespace detail { namespace variant { +namespace boost { namespace detail { namespace variant { -////////////////////////////////////////////////////////////////////////// -// forward declares -// -// NOTE: Incomplete until (if?) Boost.Move becomes part of Boost. -// -template <typename Deriving> class moveable; -template <typename T> class move_source; -template <typename T> class move_return; - -namespace detail { - -// (detail) moveable_tag -// -// Concrete type from which moveable<T> derives. -// -// TODO: Move into moveable_fwd.hpp and define has_move_constructor. -// -template <typename Deriving> -struct moveable_tag -{ -}; - -} // namespace detail - -////////////////////////////////////////////////////////////////////////// -// function template move -// -// Takes a T& and returns, if T derives moveable<T>, a move_source<T> for -// the object; else, returns the T&. -// - -namespace detail { - -// (detail) class template move_type -// -// Metafunction that, given moveable T, provides move_source<T>, else T&. -// -template <typename T> -struct move_type -{ -public: // metafunction result - - typedef typename mpl::if_< - is_base_and_derived<detail::moveable_tag<T>, T> - , move_source<T> - , T& - >::type type; - -}; - -} // namespace detail - -template <typename T> -inline - typename detail::move_type<T>::type -move(T& source) -{ - typedef typename detail::move_type<T>::type - move_t; - - return move_t(source); -} - -////////////////////////////////////////////////////////////////////////// -// class template return_t -// -// Metafunction that, given moveable T, provides move_return<T>, else T. -// -template <typename T> -struct return_t -{ -public: // metafunction result - - typedef typename mpl::if_< - is_base_and_derived<moveable<T>, T> - , move_return<T> - , T - >::type type; - -}; +using boost::move; ////////////////////////////////////////////////////////////////////////// // function template move_swap @@ -118,47 +38,30 @@ public: // metafunction result // 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 +namespace move_swap_fallback { -// [...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) +template <typename T1, typename T2> +inline void swap(T1& lhs, T2& rhs) { - T tmp( boost::detail::variant::move(lhs) ); + T1 tmp( boost::detail::variant::move(lhs) ); lhs = boost::detail::variant::move(rhs); rhs = boost::detail::variant::move(tmp); } -}} // namespace detail::move_swap +} // namespace move_swap_fallback template <typename T> inline void move_swap(T& lhs, T& rhs) { - using detail::move_swap::swap; - +#if defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP) + move_swap_fallback::swap(lhs, rhs); +#else + using move_swap_fallback::swap; swap(lhs, rhs); +#endif } -#endif // workaround - -}} // namespace detail::variant -} // namespace boost +}}} // namespace boost::detail::variant #endif // BOOST_VARIANT_DETAIL_MOVE_HPP |