DoubleBuffer

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#pragma once

#include <stdint.h>

template<typename T>
class DoubleBuffer
{
	T _buffer[2];
	uint8_t index;
    
public:
	DoubleBuffer() : index(0) { }
	DoubleBuffer(T const &data) : index(0) { _buffer[index] = data; }

	T const &get() const { return _buffer[index]; }
	T &get() { return _buffer[index]; }

	T const *operator->() const { return &get(); }
	T *operator->() { return &get(); }

	T const &buffer() const { return _buffer[!index]; }
	T &buffer() { return _buffer[!index]; }

	void commit() { index ^= 1; }
};