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