Qt 4.8
qfocus.cpp
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41 
42 #include "qdaytimeduration_p.h"
43 
44 #include "qfocus_p.h"
45 
47 
48 using namespace QPatternist;
49 
50 Focus::Focus(const DynamicContext::Ptr &prevContext) : DelegatingDynamicContext(prevContext),
51  m_contextSizeCached(-1)
52 {
53  Q_ASSERT(prevContext);
54  Q_ASSERT(prevContext != this);
55 }
56 
58 {
60  return m_focusIterator->position();
61 }
62 
64 {
66  return m_focusIterator->current();
67 }
68 
70 {
72  if(m_contextSizeCached == -1)
73  m_contextSizeCached = m_focusIterator->copy()->count();
74 
76  "If our cache is not the same as the real count, something is wrong.");
77 
78  return m_contextSizeCached;
79 }
80 
82 {
83  Q_ASSERT(it);
85 }
86 
88 {
89  return m_focusIterator;
90 }
91 
93 {
94  /* In the case that there is no top level expression that creates a focus,
95  * fn:current() should return the focus. This logic achieves this.
96  * Effectively we traverse up our "context stack" through recursion, and
97  * start returning when we've found the top most focus. */
98 
99  const Item current(m_prevContext->currentItem());
100 
101  if(current.isNull())
102  return m_focusIterator->current();
103  else
104  return current;
105 }
106 
virtual Item contextItem() const
Definition: qfocus.cpp:63
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
#define it(className, varName)
qint64 xsInteger
virtual Item::Iterator::Ptr focusIterator() const
Definition: qfocus.cpp:87
virtual void setFocusIterator(const Item::Iterator::Ptr &it)
Definition: qfocus.cpp:81
#define Q_ASSERT(cond)
Definition: qglobal.h:1823
virtual xsInteger contextSize()
Definition: qfocus.cpp:69
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
Base class for dynamic contexts that are created from an existing one.
Item::Iterator::Ptr m_focusIterator
Definition: qfocus_p.h:94
The namespace for the internal API of QtXmlPatterns.
xsInteger m_contextSizeCached
Definition: qfocus_p.h:95
virtual xsInteger contextPosition() const
Definition: qfocus.cpp:57
#define Q_ASSERT_X(cond, where, what)
Definition: qglobal.h:1837
Represents an item in the XPath 2.0 Data Model.
Definition: qitem_p.h:182
Focus(const DynamicContext::Ptr &prevContext)
Definition: qfocus.cpp:50
virtual Item currentItem() const
Definition: qfocus.cpp:92
virtual Item currentItem() const =0
Returns the item that fn:current() returns.
#define Q_FUNC_INFO
Definition: qglobal.h:1871