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46 // This file is not part of the Qt API. It exists purely as an
47 // implementation detail. This header file may change from version to
48 // version without notice, or even be removed.
52 #ifndef Patternist_UnionIterator_H
53 #define Patternist_UnionIterator_H
64 * @short Implements the @c except operator. That is, the computation
65 * of the sequence of nodes from one sequence, that doesn't appear in the
68 * @ingroup Patternist_iterators
70 class UnionIterator : public Item::Iterator
74 * It is assumed that @p it1 and @p it2 are in document order and
77 UnionIterator(const Item::Iterator::Ptr &it1,
78 const Item::Iterator::Ptr &it2);
81 virtual Item current() const;
82 virtual xsInteger position() const;
83 virtual Item::Iterator::Ptr copy() const;
86 inline Item nextFromFirstOperand()
90 m_node1 = m_it1->next();
94 const Item::Iterator::Ptr m_it1;
95 const Item::Iterator::Ptr m_it2;