integer_sequence.hpp
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/*
* Copyright 2016-2017, Intel Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
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*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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#ifndef LIBPMEMOBJ_INTEGER_SEQUENCE_HPP
#define LIBPMEMOBJ_INTEGER_SEQUENCE_HPP
#include <stddef.h>
namespace pmem
{
namespace detail
{
/*
* Base index type template.
*/
template <typename T, T...>
struct integer_sequence {
};
/*
* Size_t specialization of the integer sequence.
*/
template <size_t... Indices>
using index_sequence = integer_sequence<size_t, Indices...>;
/*
* Empty base class.
*
* Subject of empty base optimization.
*/
template <typename T, T I, typename... Types>
struct make_integer_seq_impl;
/*
* Class ending recursive variadic template peeling.
*/
template <typename T, T I, T... Indices>
struct make_integer_seq_impl<T, I, integer_sequence<T, Indices...>> {
typedef integer_sequence<T, Indices...> type;
};
/*
* Recursively create index while peeling off the types.
*/
template <typename N, N I, N... Indices, typename T, typename... Types>
struct make_integer_seq_impl<N, I, integer_sequence<N, Indices...>, T,
Types...> {
typedef typename make_integer_seq_impl<
N, I + 1, integer_sequence<N, Indices..., I>, Types...>::type
type;
};
/*
* Make index sequence entry point.
*/
template <typename... Types>
using make_index_sequence =
make_integer_seq_impl<size_t, 0, integer_sequence<size_t>, Types...>;
} /* namespace detail */
} /* namespace pmem */
#endif /* LIBPMEMOBJ_INTEGER_SEQUENCE_HPP */
pmem
Definition: allocator.hpp:48