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/**
* ValueIterator.h
*
* This is an internal helper class that is used when iterating over a
* Php::Value object - stl style.
*
* Thus, when you do c++ things like "for (auto &iter : value)", internally
* a ValueIterator object is being used.
*
* @author Emiel Bruijntjes
* @copyright 2014 Copernica BV
*/
/**
* Set up namespace
*/
namespace Php {
/**
* Forward declarations
*/
class ValueIteratorImpl;
/**
* Class definition
*/
class PHPCPP_EXPORT ValueIterator
{
public:
/**
* Constructor
* @param impl Implementation iterator
*/
ValueIterator(ValueIteratorImpl *impl);
/**
* Copy constructor
* @param that
*/
ValueIterator(const ValueIterator &that);
/**
* Destructor
*/
virtual ~ValueIterator();
/**
* Increment position (pre-increment)
* @return ValueIterator
*/
ValueIterator &operator++();
/**
* Increment position (post-increment)
* @return ValueIterator
*/
ValueIterator operator++(int)
{
// make a copy
ValueIterator copy(*this);
// increment current object
++(*this);
// and return the unchanged original
return copy;
}
/**
* Decrement position (pre-decrement)
* @return ValueIterator
*/
ValueIterator &operator--();
/**
* Increment position (post-decrement)
* @return ValueIterator
*/
ValueIterator operator--(int)
{
// make a copy
ValueIterator copy(*this);
// decrement current object
--(*this);
// and return the unchanged original
return copy;
}
/**
* Compare with other iterator
* @param that
* @return bool
*/
bool operator==(const ValueIterator &that) const;
/**
* Compare with other iterator
* @param that
* @return bool
*/
bool operator!=(const ValueIterator &that) const;
/**
* Dereference, this returns a std::pair with the current key and value
* @return std::pair
*/
const std::pair<Value,Value> &operator*() const;
/**
* Dereference, this returns a std::pair with the current key and value
* @return std::pair
*/
const std::pair<Value,Value> *operator->() const;
private:
/**
* Pointer to the actual implementation
* @var std::unique_ptr<ValueIteratorImpl>
*/
std::unique_ptr<ValueIteratorImpl> _impl;
};
/**
* End namespace
*/
}
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