Defer.h

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// Copyright 2015 Sensics, Inc.
// TypePack is part of OSVR-Core.
//
// Incorporates code from "meta":
// Copyright Eric Niebler 2014-2015
//
// Use, modification and distribution is 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)
//
// Project home: https://github.com/ericniebler/meta
//

#ifndef INCLUDED_Defer_h_GUID_FB817A3F_C608_43B7_BE11_2E81132DE2E0
#define INCLUDED_Defer_h_GUID_FB817A3F_C608_43B7_BE11_2E81132DE2E0

// Internal Includes
#include "List.h"

// Library/third-party includes
// - none

// Standard includes
// - none

namespace osvr {
namespace typepack {

    namespace detail {

        template <template <typename...> class, typename> struct defer_ {};

        template <template <typename...> class C, typename... Ts>
        struct defer_<C, list<Ts...>> {
            using type = C<Ts...>;
        };
    } // namespace detail

    // defer
    template <template <typename...> class C, typename... Ts>
    struct defer : detail::defer_<C, list<Ts...>> {};

} // namespace typepack
} // namespace osvr
#endif // INCLUDED_Defer_h_GUID_FB817A3F_C608_43B7_BE11_2E81132DE2E0