I can not write copy constructor. How to fix the error?
Tried to fix it like that:
template<typename T, typename A>
vector<T, A>::vector(const vector<T, A> &other)
{
this->allocator_ = other.allocator_;
this->size_ = other.size_;
this->space_ = other.space_;
this->data_ = other.allocator_.allocate(other.space_);
std::copy(other.data_, other.data_ + other.size_, this->data_);
}
template <typename T, typename A = std::allocator<T>>
struct vector_base
{
A allocator_;
int size_;
int space_;
T* data_;
vector_base(A const& alloc, int n)
:allocator_(alloc)
{
if (n > 1)
{
data_ = allocator_.allocate(n); size_ = 0, space_ = n;
}
else
{
data_ = allocator_.allocate(8); size_ = 0, space_ = 8;
}
}
~vector_base() {allocator_.deallocate(data_, space_);}
};
class vector : protected vector_base<T, A>
{
vector(vector<T, A> const &v);
vector<T, A>& operator=(vector<T, A> const &v);
};
template<typename T, typename A>
vector<T, A>::vector(const vector<T, A> &other)
: allocator_(other.allocator_), size_(other.size_), space_(other.space_), data_(other.allocator_.allocate(other.space_))
{
std::copy(other.data_, other.data_ + other.size_, this->data_);
}
template<typename T, typename A>
vector<T, A> &vector<T, A>::operator=(vector<T, A> const &v)
{
if (this != &v)
{
vector<T, A> copy_vector(v);
copy_vector.swap(*this);
}
return *this;
}
error: class ‘vector’ does not have any field named ‘allocator_’ : allocator_(other.allocator_), size_(other.size_), space_(other.space_), data_(other.allocator_.allocate(other.space_))
