Qt 4.8
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xmlpatterns
environment
qfocus.cpp
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** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
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** This file is part of the QtXmlPatterns module of the Qt Toolkit.
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****************************************************************************/
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#include "
qdaytimeduration_p.h
"
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#include "
qfocus_p.h
"
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QT_BEGIN_NAMESPACE
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using namespace
QPatternist
;
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Focus::Focus
(
const
DynamicContext::Ptr
&prevContext) :
DelegatingDynamicContext
(prevContext),
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m_contextSizeCached(-1)
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{
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Q_ASSERT
(prevContext);
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Q_ASSERT
(prevContext !=
this
);
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}
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xsInteger
Focus::contextPosition
()
const
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{
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Q_ASSERT
(
m_focusIterator
);
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return
m_focusIterator
->position();
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}
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Item
Focus::contextItem
()
const
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{
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Q_ASSERT
(
m_focusIterator
);
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return
m_focusIterator
->current();
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}
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xsInteger
Focus::contextSize
()
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{
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Q_ASSERT
(
m_focusIterator
);
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if
(
m_contextSizeCached
== -1)
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m_contextSizeCached
=
m_focusIterator
->copy()->count();
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Q_ASSERT_X
(
m_contextSizeCached
==
m_focusIterator
->copy()->count(),
Q_FUNC_INFO
,
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"If our cache is not the same as the real count, something is wrong."
);
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return
m_contextSizeCached
;
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}
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void
Focus::setFocusIterator
(
const
Item::Iterator::Ptr
&
it
)
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{
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Q_ASSERT
(it);
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m_focusIterator
=
it
;
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}
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Item::Iterator::Ptr
Focus::focusIterator
()
const
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{
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return
m_focusIterator
;
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}
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Item
Focus::currentItem
()
const
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{
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/* In the case that there is no top level expression that creates a focus,
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* fn:current() should return the focus. This logic achieves this.
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* Effectively we traverse up our "context stack" through recursion, and
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* start returning when we've found the top most focus. */
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const
Item
current(
m_prevContext
->
currentItem
());
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if
(current.isNull())
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return
m_focusIterator
->current();
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else
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return
current;
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}
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QT_END_NAMESPACE
QPatternist::Focus::contextItem
virtual Item contextItem() const
Definition:
qfocus.cpp:63
QT_END_NAMESPACE
#define QT_END_NAMESPACE
This macro expands to.
Definition:
qglobal.h:90
it
#define it(className, varName)
Definition:
qbuiltintypes.cpp:95
qfocus_p.h
QPatternist::xsInteger
qint64 xsInteger
Definition:
qprimitives_p.h:130
QExplicitlySharedDataPointer< DynamicContext >
QPatternist::Focus::focusIterator
virtual Item::Iterator::Ptr focusIterator() const
Definition:
qfocus.cpp:87
QPatternist::Focus::setFocusIterator
virtual void setFocusIterator(const Item::Iterator::Ptr &it)
Definition:
qfocus.cpp:81
Q_ASSERT
#define Q_ASSERT(cond)
Definition:
qglobal.h:1823
QPatternist::Focus::contextSize
virtual xsInteger contextSize()
Definition:
qfocus.cpp:69
qdaytimeduration_p.h
QT_BEGIN_NAMESPACE
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition:
qglobal.h:89
QPatternist::DelegatingDynamicContext
Base class for dynamic contexts that are created from an existing one.
Definition:
qdelegatingdynamiccontext_p.h:75
QPatternist::Focus::m_focusIterator
Item::Iterator::Ptr m_focusIterator
Definition:
qfocus_p.h:94
QPatternist
The namespace for the internal API of QtXmlPatterns.
Definition:
qacceliterators_p.h:62
QPatternist::Focus::m_contextSizeCached
xsInteger m_contextSizeCached
Definition:
qfocus_p.h:95
QPatternist::Focus::contextPosition
virtual xsInteger contextPosition() const
Definition:
qfocus.cpp:57
Q_ASSERT_X
#define Q_ASSERT_X(cond, where, what)
Definition:
qglobal.h:1837
QPatternist::Item
Represents an item in the XPath 2.0 Data Model.
Definition:
qitem_p.h:182
QPatternist::Focus::Focus
Focus(const DynamicContext::Ptr &prevContext)
Definition:
qfocus.cpp:50
QPatternist::Focus::currentItem
virtual Item currentItem() const
Definition:
qfocus.cpp:92
QPatternist::DynamicContext::currentItem
virtual Item currentItem() const =0
Returns the item that fn:current() returns.
QPatternist::DelegatingDynamicContext::m_prevContext
const DynamicContext::Ptr m_prevContext
Definition:
qdelegatingdynamiccontext_p.h:122
Q_FUNC_INFO
#define Q_FUNC_INFO
Definition:
qglobal.h:1871
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