Qt 4.8
qrangeiterator.cpp
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41 
42 #include "qinteger_p.h"
43 
44 #include "qrangeiterator_p.h"
45 
47 
48 using namespace QPatternist;
49 
51  const Direction direction,
52  const xsInteger end)
53  : m_start(start),
54  m_end(end),
55  m_position(0),
56  m_count(start),
57  m_direction(direction),
58  m_increment(m_direction == Forward ? 1 : -1)
59 {
62 
63  if(m_direction == Backward)
64  {
66  m_count = m_start;
67  }
68 }
69 
71 {
72  if(m_position == -1)
73  return Item();
74  else if((m_direction == Forward && m_count > m_end) ||
76  {
77  m_position = -1;
78  m_current.reset();
79  return Item();
80  }
81  else
82  {
85  ++m_position;
86  return m_current;
87  }
88 }
89 
91 {
92  /* This complication is for handling that m_start & m_end may be reversed. */
93  xsInteger ret;
94 
95  if(m_start < m_end)
96  ret = m_end - m_start;
97  else
98  ret = m_start - m_end;
99 
100  return ret + 1;
101 }
102 
104 {
106 }
107 
109 {
110  return m_current;
111 }
112 
114 {
115  return m_position;
116 }
117 
119 {
120  if(m_direction == Backward)
122  else
124 }
125 
RangeIterator(const xsInteger start, const Direction direction, const xsInteger end)
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
qint64 xsInteger
The QExplicitlySharedDataPointer class represents a pointer to an explicitly shared object...
Definition: qshareddata.h:136
#define Q_ASSERT(cond)
Definition: qglobal.h:1823
static Item fromValue(const xsInteger num)
Definition: qinteger.cpp:52
QExplicitlySharedDataPointer< QAbstractXmlForwardIterator< Item > > Ptr
A smart pointer wrapping an instance of a QAbstractXmlForwardIterator subclass.
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
virtual xsInteger count()
Determines the number of items this QAbstractXmlForwardIterator represents.
virtual Item::Iterator::Ptr copy() const
Copies this QAbstractXmlForwardIterator and returns the copy.
The namespace for the internal API of QtXmlPatterns.
void qSwap(T &value1, T &value2)
Definition: qglobal.h:2181
virtual Item current() const
Returns the current item in the sequence.
virtual Item::Iterator::Ptr toReversed()
Returns a reverse iterator for the sequence.
Represents an item in the XPath 2.0 Data Model.
Definition: qitem_p.h:182
virtual Item next()
Returns the next item in the sequence, or a null object if the end has been reached.
virtual xsInteger position() const
Returns the current position in the sequence represented by this.
static const KeyPair *const end
Qt::LayoutDirection direction