A DynamicContext that maintains the focus, a sequence of items. More...

#include <qfocus_p.h>

Inheritance diagram for QPatternist::Focus:

Public Functions
virtual Item	contextItem () const

virtual xsInteger	contextPosition () const

virtual xsInteger	contextSize ()

virtual Item	currentItem () const

	Focus (const DynamicContext::Ptr &prevContext)

virtual Item::Iterator::Ptr	focusIterator () const

virtual void	setFocusIterator (const Item::Iterator::Ptr &it)

Public Functions inherited from QPatternist::DelegatingDynamicContext
virtual void	addNodeModel (const QAbstractXmlNodeModel::Ptr &nm)

virtual QDateTime	currentDateTime () const

virtual QExplicitlySharedDataPointer< TemplateMode >	currentTemplateMode () const
	Returns the current template mode that is in effect. More...

virtual Expression::Ptr	expressionVariable (const VariableSlotID slotNumber) const

virtual ExternalVariableLoader::Ptr	externalVariableLoader () const

virtual ItemCacheCell &	globalItemCacheCell (const VariableSlotID slot)

virtual ItemSequenceCacheCell::Vector &	globalItemSequenceCacheCells (const VariableSlotID slot)

virtual QExplicitlySharedDataPointer< DayTimeDuration >	implicitTimezone () const

virtual ItemCacheCell &	itemCacheCell (const VariableSlotID slot)

virtual ItemSequenceCacheCell::Vector &	itemSequenceCacheCells (const VariableSlotID slot)

virtual QSourceLocation	locationFor (const SourceLocationReflection *const reflection) const
	Returns the source location applying for `reflection`. More...

virtual QAbstractMessageHandler *	messageHandler () const

virtual NamePool::Ptr	namePool () const

virtual NodeBuilder::Ptr	nodeBuilder (const QUrl &baseURI) const

virtual QAbstractXmlReceiver *	outputReceiver () const

virtual Item::Iterator::Ptr	positionIterator (const VariableSlotID slot) const

virtual DynamicContext::Ptr	previousContext () const
	Returns the previous DynamicContext. If this context is the top-level one, `null` is returned. More...

virtual Item	rangeVariable (const VariableSlotID slotNumber) const

virtual ResourceLoader::Ptr	resourceLoader () const

virtual void	setExpressionVariable (const VariableSlotID slotNumber, const Expression::Ptr &newValue)

virtual void	setPositionIterator (const VariableSlotID slot, const Item::Iterator::Ptr &newValue)

virtual void	setRangeVariable (const VariableSlotID slotNumber, const Item &newValue)

virtual TemplateParameterHash &	templateParameterStore ()
	When a template is called, this member carries the template parameters. More...

virtual const QAbstractUriResolver *	uriResolver () const
	The URI resolver in use. More...

Public Functions inherited from QPatternist::DynamicContext
DynamicContext::Ptr	createFocus ()

DynamicContext::Ptr	createReceiverContext (QAbstractXmlReceiver *const receiver)

DynamicContext::Ptr	createStack ()

virtual void	setExpressionVariable (const VariableSlotID slot, const QExplicitlySharedDataPointer< Expression > &newValue)=0

virtual void	setFocusIterator (const Item::Iterator::Ptr &it)=0

virtual void	setPositionIterator (const VariableSlotID slot, const Item::Iterator::Ptr &newValue)=0

virtual	~DynamicContext ()

Public Functions inherited from QPatternist::ReportContext
void	error (const QString &message, const ReportContext::ErrorCode errorCode, const QSourceLocation &sourceLocation)

void	error (const QString &message, const ReportContext::ErrorCode errorCode, const SourceLocationReflection *const reflection)

void	error (const QString &message, const QXmlName qName, const SourceLocationReflection *const r)

	ReportContext ()
	Default constructors. More...

QUrl	resolveURI (const QUrl &relative, const QUrl &baseURI) const

void	warning (const QString &message, const QSourceLocation &sourceLocation=QSourceLocation())

virtual	~ReportContext ()

Public Functions inherited from QSharedData
	QSharedData ()
	Constructs a QSharedData object with a reference count of 0. More...

	QSharedData (const QSharedData &)
	Constructs a QSharedData object with reference count 0. More...

Properties
xsInteger	m_contextSizeCached

Item::Iterator::Ptr	m_focusIterator

Additional Inherited Members
Public Types inherited from QPatternist::DynamicContext
typedef QExplicitlySharedDataPointer< DynamicContext >	Ptr

typedef QHash< QXmlName, QExplicitlySharedDataPointer< Expression > >	TemplateParameterHash
	Carries template parameters at runtime. More...

Public Types inherited from QPatternist::ReportContext
enum	ErrorCode { XSDError, XPST0001, XPDY0002, XPST0003, XPTY0004, XPST0005, XPTY0006, XPTY0007, XPST0008, XQST0009, XPST0010, XQST0012, XQST0013, XQST0014, XQST0015, XQST0016, XPST0017, XPTY0018, XPTY0019, XPTY0020, XPDY0021, XQST0022, XQTY0023, XQTY0024, XQDY0025, XQDY0026, XQDY0027, XQTY0028, XQDY0029, XQTY0030, XQST0031, XQST0032, XQST0033, XQST0034, XQST0035, XQST0036, XQST0037, XQST0038, XQST0039, XQST0040, XQDY0041, XQST0042, XQST0043, XQDY0044, XQST0045, XQST0046, XQST0047, XQST0048, XQST0049, XPDY0050, XPST0051, XQDY0052, XQST0053, XQST0054, XQST0055, XQST0056, XQST0057, XQST0058, XQST0059, XQST0060, XQDY0061, XQDY0062, XQST0063, XQDY0064, XQST0065, XQST0066, XQST0067, XQST0068, XQST0069, XQST0070, XQST0071, XQDY0072, XQST0073, XQDY0074, XQST0075, XQST0076, XQST0077, XQST0078, XQST0079, XPST0080, XPST0081, XQST0082, XPST0083, XQDY0084, XQST0085, XQTY0086, XQST0087, XQST0088, XQST0089, XQST0090, XQDY0091, XQDY0092, XQST0093, FOER0000, FOAR0001, FOAR0002, FOCA0001, FOCA0002, FOCA0003, FOCA0005, FOCA0006, FOCH0001, FOCH0002, FOCH0003, FOCH0004, FODC0001, FODC0002, FODC0003, FODC0004, FODC0005, FODT0001, FODT0002, FODT0003, FONS0004, FONS0005, FORG0001, FORG0002, FORG0003, FORG0004, FORG0005, FORG0006, FORG0008, FORG0009, FORX0001, FORX0002, FORX0003, FORX0004, FOTY0012, SENR0001, SERE0003, SEPM0004, SERE0005, SERE0006, SESU0007, SERE0008, SEPM0009, SEPM0010, SESU0011, SERE0012, SESU0013, SERE0014, SERE0015, SEPM0016, XTSE0010, XTSE0020, XTSE0080, XTSE0090, XTSE0110, XTSE0120, XTSE0125, XTSE0130, XTSE0150, XTSE0165, XTSE0170, XTSE0180, XTSE0190, XTSE0200, XTSE0210, XTSE0215, XTSE0220, XTSE0260, XTSE0265, XTSE0280, XTSE0340, XTSE0350, XTSE0370, XTSE0500, XTSE0530, XTSE0550, XTSE0580, XTSE0620, XTSE0630, XTSE0650, XTSE0660, XTSE0670, XTSE0680, XTSE0690, XTSE0710, XTSE0720, XTSE0740, XTSE0760, XTSE0770, XTSE0805, XTSE0808, XTSE0809, XTSE0810, XTSE0812, XTSE0840, XTSE0870, XTSE0880, XTSE0910, XTSE0940, XTTE0950, XTSE0975, XTSE1015, XTSE1017, XTSE1040, XTSE1060, XTSE1070, XTSE1080, XTSE1090, XTSE1130, XTSE1205, XTSE1210, XTSE1220, XTSE1290, XTSE1295, XTSE1300, XTSE1430, XTSE1505, XTSE1520, XTSE1530, XTSE1560, XTSE1570, XTSE1580, XTSE1590, XTSE1600, XTSE1650, XTSE1660, XTTE0505, XTTE0510, XTTE0520, XTTE0570, XTTE0590, XTTE0600, XTTE0780, XTTE0790, XTTE0990, XTTE1000, XTTE1020, XTTE1100, XTTE1120, XTTE1510, XTTE1512, XTTE1515, XTTE1540, XTTE1545, XTTE1550, XTTE1555, XTDE0030, XTDE0040, XTDE0045, XTDE0047, XTDE0050, XTDE0060, XTDE0160, XTRE0270, XTDE0290, XTDE0410, XTDE0420, XTDE0430, XTDE0440, XTDE0485, XTRE0540, XTDE0560, XTDE0610, XTDE0640, XTDE0700, XTRE0795, XTDE0820, XTDE0830, XTDE0835, XTDE0850, XTDE0855, XTDE0860, XTDE0865, XTDE0890, XTDE0905, XTDE0920, XTDE0925, XTDE0930, XTDE0980, XTDE1030, XTDE1035, XTDE1110, XTDE1140, XTDE1145, XTDE1150, XTRE1160, XTDE1170, XTDE1190, XTDE1200, XTDE1260, XTDE1270, XTDE1280, XTDE1310, XTDE1340, XTDE1350, XTDE1360, XTDE1370, XTDE1380, XTDE1390, XTMM9000, XTDE1400, XTDE1420, XTDE1425, XTDE1428, XTDE1440, XTDE1450, XTDE1460, XTDE1480, XTDE1490, XTRE1495, XTRE1500, XTRE1620, XTRE1630, XTDE1665 }

typedef QHash< const SourceLocationReflection *, QSourceLocation >	LocationHash

typedef QExplicitlySharedDataPointer< ReportContext >	Ptr

Static Public Functions inherited from QPatternist::ReportContext
static QString	codeFromURI (const QString &typeURI, QString &uri)

static QString	codeToString (const ReportContext::ErrorCode errorCode)

Public Variables inherited from QSharedData
QAtomicInt	ref

Protected Functions inherited from QPatternist::DelegatingDynamicContext
	DelegatingDynamicContext (const DynamicContext::Ptr &prevContext)

Protected Variables inherited from QPatternist::DelegatingDynamicContext
const DynamicContext::Ptr	m_prevContext

Related Functions inherited from QPatternist::ReportContext
typedef bool	Exception
	This is the class type that is being thrown when a query error occur. More...

Detailed Description

A DynamicContext that maintains the focus, a sequence of items.

Focus implements both the outer and inner focus. The focus is one of the things that characterizes the XPath language. The focus is what's iterated over in a predicate, whose current item can be received via the context item expression, .(the dot), and whose size is retrievable via the function fn:last().

Author: Frans Englich frans.nosp@m..eng.nosp@m.lich@.nosp@m.noki.nosp@m.a.com

Definition at line 75 of file qfocus_p.h.

Constructors and Destructors

◆ Focus()

Focus::Focus ( const DynamicContext::Ptr & prevContext )

Definition at line 50 of file qfocus.cpp.

                                                  : DelegatingDynamicContext(prevContext),
                                                        m_contextSizeCached(-1)
 {
     Q_ASSERT(prevContext);
     Q_ASSERT(prevContext != this);
 }

Functions

◆ contextItem()

Item Focus::contextItem ( ) const

virtual

Reimplemented from QPatternist::DelegatingDynamicContext.

Definition at line 63 of file qfocus.cpp.

 {
     Q_ASSERT(m_focusIterator);
     return m_focusIterator->current();
 }

◆ contextPosition()

xsInteger Focus::contextPosition ( ) const

virtual

Reimplemented from QPatternist::DelegatingDynamicContext.

Definition at line 57 of file qfocus.cpp.

 {
     Q_ASSERT(m_focusIterator);
     return m_focusIterator->position();
 }

◆ contextSize()

xsInteger Focus::contextSize ( )

virtual

Reimplemented from QPatternist::DelegatingDynamicContext.

Definition at line 69 of file qfocus.cpp.

 {
     Q_ASSERT(m_focusIterator);
     if(m_contextSizeCached == -1)
         m_contextSizeCached = m_focusIterator->copy()->count();
 
     Q_ASSERT_X(m_contextSizeCached == m_focusIterator->copy()->count(), Q_FUNC_INFO,
                "If our cache is not the same as the real count, something is wrong.");
 
     return m_contextSizeCached;
 }

◆ currentItem()

Item Focus::currentItem ( ) const

virtual

If there is no top level expression that sets the current item, the focus should be used. This implementation ensures that.

Reimplemented from QPatternist::DelegatingDynamicContext.

Definition at line 92 of file qfocus.cpp.

 {
     /* In the case that there is no top level expression that creates a focus,
      * fn:current() should return the focus. This logic achieves this.
      * Effectively we traverse up our "context stack" through recursion, and
      * start returning when we've found the top most focus. */
 
     const Item current(m_prevContext->currentItem());
 
     if(current.isNull())
         return m_focusIterator->current();
     else
         return current;
 }

◆ focusIterator()

Item::Iterator::Ptr Focus::focusIterator ( ) const

virtual

Reimplemented from QPatternist::DelegatingDynamicContext.

Definition at line 87 of file qfocus.cpp.

 {
     return m_focusIterator;
 }

◆ setFocusIterator()

void Focus::setFocusIterator ( const Item::Iterator::Ptr & it )

virtual

Reimplemented from QPatternist::DelegatingDynamicContext.

Definition at line 81 of file qfocus.cpp.

 {
     Q_ASSERT(it);
     m_focusIterator = it;
 }

Properties

◆ m_contextSizeCached

xsInteger QPatternist::Focus::m_contextSizeCached

private

Definition at line 95 of file qfocus_p.h.

Referenced by contextSize().

◆ m_focusIterator

Item::Iterator::Ptr QPatternist::Focus::m_focusIterator

private

Definition at line 94 of file qfocus_p.h.

Referenced by contextItem(), contextPosition(), contextSize(), currentItem(), focusIterator(), and setFocusIterator().

The documentation for this class was generated from the following files:

/src/xmlpatterns/environment/qfocus_p.h
/src/xmlpatterns/environment/qfocus.cpp

Public Functions

Properties

Additional Inherited Members

Detailed Description

Constructors and Destructors

◆ Focus()

Functions

◆ contextItem()

◆ contextPosition()

◆ contextSize()

◆ currentItem()

◆ focusIterator()

◆ setFocusIterator()

Properties

◆ m_contextSizeCached

◆ m_focusIterator