/usr/include/caf/detail/pseudo_tuple.hpp is in libcaf-dev 0.13.2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* ____ _ _____ *
* / ___| / \ | ___| C++ *
* | | / _ \ | |_ Actor *
* | |___ / ___ \| _| Framework *
* \____/_/ \_|_| *
* *
* Copyright (C) 2011 - 2015 *
* Dominik Charousset <dominik.charousset (at) haw-hamburg.de> *
* *
* Distributed under the terms and conditions of the BSD 3-Clause License or *
* (at your option) under the terms and conditions of the Boost Software *
* License 1.0. See accompanying files LICENSE and LICENSE_ALTERNATIVE. *
* *
* If you did not receive a copy of the license files, see *
* http://opensource.org/licenses/BSD-3-Clause and *
* http://www.boost.org/LICENSE_1_0.txt. *
******************************************************************************/
#ifndef CAF_PSEUDO_TUPLE_HPP
#define CAF_PSEUDO_TUPLE_HPP
#include <cstddef>
#include "caf/detail/type_traits.hpp"
namespace caf {
namespace detail {
// tuple-like access to an array of void pointers
template <class... T>
struct pseudo_tuple {
using pointer = void*;
using const_pointer = const void*;
pointer data[sizeof...(T) > 0 ? sizeof...(T) : 1];
inline const_pointer at(size_t p) const { return data[p]; }
inline pointer mutable_at(size_t p) { return data[p]; }
inline pointer& operator[](size_t p) { return data[p]; }
};
template <size_t N, class... Ts>
const typename detail::type_at<N, Ts...>::type&
get(const detail::pseudo_tuple<Ts...>& tv) {
static_assert(N < sizeof...(Ts), "N >= tv.size()");
auto vp = tv.at(N);
CAF_ASSERT(vp != nullptr);
return *reinterpret_cast<const typename detail::type_at<N, Ts...>::type*>(vp);
}
template <size_t N, class... Ts>
typename detail::type_at<N, Ts...>::type& get(detail::pseudo_tuple<Ts...>& tv) {
static_assert(N < sizeof...(Ts), "N >= tv.size()");
auto vp = tv.mutable_at(N);
CAF_ASSERT(vp != nullptr);
return *reinterpret_cast<typename detail::type_at<N, Ts...>::type*>(vp);
}
} // namespace detail
} // namespace caf
#endif // CAF_PSEUDO_TUPLE_HPP
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