*/
template <typename ContainerType, typename ElementType, typename ContainerOperations>
class random_access_container_wrapper {
+ template <typename IteratorContainerType, typename IteratorElementType>
class _iterator : public std::iterator<std::random_access_iterator_tag, std::size_t> {
public:
- explicit _iterator(const random_access_container_wrapper& container,
- std::size_t start_index = 0) :
+ explicit _iterator(IteratorContainerType& container, std::size_t start_index = 0) :
_container(container), _index(start_index)
{
}
return !(*this == other);
}
- typename std::conditional<std::is_pointer<ElementType>::value,
- ElementType,
- ElementType&>::type
+ typename std::conditional<std::is_pointer<IteratorElementType>::value,
+ IteratorElementType,
+ IteratorElementType&>::type
operator*() const noexcept
{
return _container[_index];
}
private:
- const random_access_container_wrapper& _container;
+ IteratorContainerType& _container;
std::size_t _index;
};
- using iterator = _iterator;
+ using iterator = _iterator<random_access_container_wrapper, ElementType>;
+ using const_iterator = _iterator<const random_access_container_wrapper, const ElementType>;
public:
- explicit random_access_container_wrapper(ContainerType container) : _container{ container }
+ explicit random_access_container_wrapper(ContainerType container) :
+ _container{ std::move(container) }
{
}
return iterator(*this, ContainerOperations::size(_container));
}
+ const_iterator begin() const noexcept
+ {
+ return const_iterator(*this);
+ }
+
+ const_iterator end() const noexcept
+ {
+ return const_iterator(*this, ContainerOperations::size(_container));
+ }
+
std::size_t size() const noexcept
{
return ContainerOperations::size(_container);
return ContainerOperations::get(_container, index);
}
-private:
+protected:
ContainerType _container;
};
} /* namespace utils */