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#ifndef INCLUDED_CIRQUEVECTOR_H_
#define INCLUDED_CIRQUEVECTOR_H_
#include <vector>
#include "cirque.h"
template<>
class CirQue<std::vector<int>>
{
using IntVect = std::vector<int>;
IntVect d_data;
size_t d_size;
using iterator = IntVect::iterator;
iterator d_front;
iterator d_back;
public:
using value_type = int;
using const_reference = value_type const &;
enum Exception
{
EMPTY,
FULL
};
CirQue();
CirQue(IntVect const &iv);
CirQue(CirQue<IntVect> const &other);
CirQue &operator=(CirQue<IntVect> const &other);
int &back();
int &front();
bool empty() const;
bool full() const;
size_t maxSize() const;
size_t size() const;
void pop_front();
void push_back(int const &object);
void swap(CirQue<IntVect> &other);
private:
iterator inc(iterator const &iter);
};
CirQue<std::vector<int>>::CirQue()
:
d_size(0)
{}
CirQue<std::vector<int>>::CirQue(IntVect const &iv)
:
d_data(iv),
d_size(iv.size()),
d_front(d_data.begin()),
d_back(d_data.begin())
{}
CirQue<std::vector<int>>::CirQue(CirQue<IntVect> const &other)
:
d_data(other.d_data),
d_size(other.d_size),
d_front(d_data.begin() + (other.d_front - other.d_data.begin())),
d_back(d_data.begin() + (other.d_back - other.d_data.begin()))
{}
CirQue<std::vector<int>> &CirQue<std::vector<int>>::operator=(
CirQue<IntVect> const &rhs)
{
CirQue<IntVect> tmp(rhs);
swap(tmp);
}
void CirQue<std::vector<int>>::swap(CirQue<IntVect> &other)
{
char tmp[sizeof(CirQue<IntVect>)];
memcpy(tmp, &other, sizeof(CirQue<IntVect>));
memcpy(reinterpret_cast<char *>(&other), this, sizeof(CirQue<IntVect>));
memcpy(reinterpret_cast<char *>(this), tmp, sizeof(CirQue<IntVect>));
}
void CirQue<std::vector<int>>::pop_front()
{
if (d_size == 0)
throw EMPTY;
d_front = inc(d_front);
--d_size;
}
void CirQue<std::vector<int>>::push_back(int const &object)
{
if (d_size == d_data.size())
throw FULL;
*d_back = object;
d_back = inc(d_back);
++d_size;
}
inline int &CirQue<std::vector<int>>::back()
{
return d_back == d_data.begin() ? d_data.back() : d_back[-1];
}
inline int &CirQue<std::vector<int>>::front()
{
return *d_front;
}
CirQue<std::vector<int>>::iterator CirQue<std::vector<int>>::inc(
CirQue<std::vector<int>>::iterator const &iter)
{
iterator tmp(iter + 1);
tmp = tmp == d_data.end() ? d_data.begin() : tmp;
return tmp;
}
#endif
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