Qt 4.8
qexceptiterator.cpp
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41 
42 #include "qitem_p.h"
43 
44 #include "qexceptiterator_p.h"
45 
47 
48 using namespace QPatternist;
49 
51  const Item::Iterator::Ptr &it2) : m_it1(it1)
52  , m_it2(it2)
53  , m_position(0)
54  , m_node1(m_it1->next())
55  , m_node2(m_it2->next())
56 {
57  Q_ASSERT(m_it1);
58  Q_ASSERT(m_it2);
59 }
60 
62 {
63  ++m_position;
65  m_node1 = m_it1->next();
66 
67  return m_current;
68 }
69 
71 {
72  while(true)
73  {
74  if(!m_node1)
75  {
76  m_position = -1;
77  m_current = Item();
78  return Item();
79  }
80  else if(!m_node2)
81  return fromFirstOperand();
82 
83  if(m_node1.asNode().model() != m_node2.asNode().model())
84  return fromFirstOperand();
85 
87  {
89  return fromFirstOperand();
91  {
92  m_node2 = m_it2->next();
93  if(m_node2)
94  continue;
95  else
96  return fromFirstOperand();
97  }
98  default:
99  {
100  m_node1 = m_it1->next();
101  m_node2 = m_it2->next();
102  }
103  }
104  }
105 }
106 
108 {
109  return m_current;
110 }
111 
113 {
114  return m_position;
115 }
116 
118 {
119  return Item::Iterator::Ptr(new ExceptIterator(m_it1->copy(), m_it2->copy()));
120 }
121 
ExceptIterator(const Item::Iterator::Ptr &it1, const Item::Iterator::Ptr &it2)
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
DocumentOrder compareOrder(const QXmlNodeModelIndex &other) const
Definition: qitem_p.h:481
qint64 xsInteger
const Item::Iterator::Ptr m_it2
Due to strong interdependencies, this file contains the definitions for the classes Item...
The QExplicitlySharedDataPointer class represents a pointer to an explicitly shared object...
Definition: qshareddata.h:136
virtual xsInteger position() const
Returns the current position in the sequence represented by this.
#define Q_ASSERT(cond)
Definition: qglobal.h:1823
virtual Item next()
Returns the next item in the sequence, or a null object if the end has been reached.
QExplicitlySharedDataPointer< QAbstractXmlForwardIterator< Item > > Ptr
A smart pointer wrapping an instance of a QAbstractXmlForwardIterator subclass.
virtual Item::Iterator::Ptr copy() const
Copies this QAbstractXmlForwardIterator and returns the copy.
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
The namespace for the internal API of QtXmlPatterns.
const QAbstractXmlNodeModel * model() const
Returns the QAbstractXmlNodeModel that this node index refers to.
const QXmlNodeModelIndex & asNode() const
Definition: qitem_p.h:379
Represents an item in the XPath 2.0 Data Model.
Definition: qitem_p.h:182
const Item::Iterator::Ptr m_it1
virtual Item current() const
Returns the current item in the sequence.