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/**
* @file circular.hpp
* @brief Small utility for filling a buffer in a circular manner.
*
* Copyright (C) 2021 Clyne Sullivan
*
* Distributed under the GNU GPL v3 or later. You should have received a copy of
* the GNU General Public License along with this program.
* If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef CIRCULAR_HPP
#define CIRCULAR_HPP
#include <iterator>
template<template<typename> class Container, typename T>
class CircularBuffer
{
public:
CircularBuffer(Container<T>& container) :
m_begin(std::begin(container)),
m_end(std::end(container)),
m_current(m_begin) {}
void put(const T& value) noexcept {
*m_current = value;
if (++m_current == m_end)
m_current = m_begin;
}
std::size_t size() const noexcept {
return std::distance(m_begin, m_end);
}
void reset(const T& fill) noexcept {
std::fill(m_begin, m_end, fill);
m_current = m_begin;
}
private:
Container<T>::iterator m_begin;
Container<T>::iterator m_end;
Container<T>::iterator m_current;
};
#endif // CIRCULAR_HPP
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