Chris@16: //-----------------------------------------------------------------------------
Chris@16: // boost variant/detail/over_sequence.hpp header file
Chris@16: // See http://www.boost.org for updates, documentation, and revision history.
Chris@16: //-----------------------------------------------------------------------------
Chris@16: //
Chris@16: // Copyright (c) 2003
Chris@16: // Eric Friedman
Chris@16: //
Chris@16: // Portions Copyright (C) 2002 David Abrahams
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See
Chris@16: // accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: #ifndef BOOST_VARIANT_DETAIL_OVER_SEQUENCE_HPP
Chris@16: #define BOOST_VARIANT_DETAIL_OVER_SEQUENCE_HPP
Chris@16: 
Chris@16: #include "boost/mpl/aux_/config/ctps.hpp"
Chris@16: 
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace detail { namespace variant {
Chris@16: 
Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: // (detail) class over_sequence
Chris@16: //
Chris@16: // Wrapper used to indicate bounded types for variant are from type sequence.
Chris@16: //
Chris@16: template <typename Types>
Chris@16: struct over_sequence
Chris@16: {
Chris@16:     typedef Types type;
Chris@16: };
Chris@16: 
Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: // (detail) metafunction is_over_sequence (modeled on code by David Abrahams)
Chris@16: //
Chris@16: // Indicates whether the specified type is of form over_sequence<...> or not.
Chris@16: //
Chris@16: 
Chris@16: 
Chris@16: template <typename T>
Chris@16: struct is_over_sequence
Chris@16:     : mpl::false_
Chris@16: {
Chris@16: };
Chris@16: 
Chris@16: template <typename Types>
Chris@16: struct is_over_sequence< over_sequence<Types> >
Chris@16:     : mpl::true_
Chris@16: {
Chris@16: };
Chris@16: 
Chris@16: 
Chris@16: }} // namespace detail::variant
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif // BOOST_VARIANT_DETAIL_OVER_SEQUENCE_HPP