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39
40
41#include "qremovaliterator_p.h"
42
43QT_BEGIN_NAMESPACE
44
45using namespace QPatternist;
46
47RemovalIterator::RemovalIterator(const Item::Iterator::Ptr &target,
48 const xsInteger pos) : m_target(target),
49 m_removalPos(pos),
50 m_position(0)
51{
52 Q_ASSERT(target);
53 Q_ASSERT(pos >= 1);
54}
55
56Item RemovalIterator::next()
57{
58 if(m_position == -1)
59 return Item();
60
61 m_current = m_target->next();
62
63 if(!m_current)
64 {
65 m_position = -1;
66 m_current.reset();
67 return Item();
68 }
69
70 ++m_position;
71
72 if(m_position == m_removalPos)
73 {
74 next(); /* Recurse, return the next item. */
75 --m_position; /* Don't count the one we removed. */
76 return m_current;
77 }
78
79 return m_current;
80}
81
82xsInteger RemovalIterator::count()
83{
84 const xsInteger itc = m_target->count();
85
86 if(itc < m_removalPos)
87 return itc;
88 else
89 return itc - 1;
90}
91
92Item RemovalIterator::current() const
93{
94 return m_current;
95}
96
97xsInteger RemovalIterator::position() const
98{
99 return m_position;
100}
101
102Item::Iterator::Ptr RemovalIterator::copy() const
103{
104 return Item::Iterator::Ptr(new RemovalIterator(m_target->copy(), m_removalPos));
105}
106
107QT_END_NAMESPACE
108

source code of qtxmlpatterns/src/xmlpatterns/iterators/qremovaliterator.cpp