last_rf.hpp

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//
// Copyright (C) 2014, 2015 Ableton AG, Berlin. All rights reserved.
//
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// Software is furnished to do so, subject to the following conditions:
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#pragma once

#include <atria/estd/utility.hpp>
#include <atria/estd/type_traits.hpp>
#include <atria/prelude/tuplify.hpp>

namespace atria {
namespace xform {

constexpr struct last_rf_t
{
  template <typename StateT, typename ...InputTs>
  constexpr auto operator() (StateT&&, InputTs&& ...ins) const
    -> estd::decay_t<decltype(tuplify(std::forward<InputTs>(ins)...))>
  {
    return tuplify(std::forward<InputTs>(ins)...);
  }
} last_rf {};

} // namespace xform
} // namespace atria