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65 lines
1.7 KiB
C++
65 lines
1.7 KiB
C++
/**
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* Copyright 2013-2021 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#ifndef SRSLTE_CIRCULAR_ARRAY_H
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#define SRSLTE_CIRCULAR_ARRAY_H
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#include <array>
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/**
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*
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* @file circular_array.h
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*
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* @brief Helper class to safely access elements of a std::array
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*
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* Protects from out-of-bounds access by applying modulo of it's length
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* when using the [] operator for element access.
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*
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* This is useful for circular data structures, like TTIs or SNs.
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*/
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namespace srslte {
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template <typename T, std::size_t N>
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class circular_array
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{
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std::array<T, N> data{};
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public:
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using iterator = T*;
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using const_iterator = const T*;
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T& operator[](std::size_t pos) { return data[pos % N]; }
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const T& operator[](std::size_t pos) const { return data[pos % N]; }
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T* begin() { return data.begin(); }
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const T* begin() const { return data.begin(); }
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T* end() { return data.end(); }
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const T* end() const { return data.end(); }
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size_t size() const { return N; }
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};
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} // namespace srslte
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#endif // SRSLTE_CIRCULAR_ARRAY_H
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