#include <cmath>
#include <cstring>
#include <stdexcept>
#include "byte_order_changer.hpp"
#include "data_streamer.hpp"

using namespace sc::io;

byte_order_changer::byte_order_changer(data_streamer* ds, byte_order order) : _data_streamer {ds} {
	if (ds == nullptr) {
		std::cerr << "byte_order_changer: no data streamer given\n";
		return;
	}
	_saved_byte_order = _data_streamer->target_byte_order();
	_data_streamer->target_byte_order(order);
}

byte_order_changer::~byte_order_changer() {
	if (_data_streamer) {
		_data_streamer->target_byte_order(_saved_byte_order);
	}
}

byte_order_changer::byte_order_changer(byte_order_changer&& other) {
	_data_streamer = other._data_streamer;
	_saved_byte_order = other._saved_byte_order;
	other._data_streamer = nullptr;
}

byte_order_changer& byte_order_changer::operator=(byte_order_changer&& other) {
	if (&other != this) {
		_data_streamer = other._data_streamer;
		_saved_byte_order = other._saved_byte_order;
		other._data_streamer = nullptr;
	}
	return *this;
}