A reference to an at variable, declared with the for-part in XQuery's FLWOR expression. More...

#include <qpositionalvariablereference_p.h>

Inheritance diagram for QPatternist::PositionalVariableReference:

Public Types
typedef QExplicitlySharedDataPointer< PositionalVariableReference >	Ptr

Public Types inherited from QPatternist::VariableReference
typedef QList< VariableReference::Ptr >	List

typedef QExplicitlySharedDataPointer< VariableReference >	Ptr

Public Types inherited from QPatternist::Expression
typedef QExplicitlySharedDataPointer< const Expression >	ConstPtr
	A smart pointer wrapping `const` Expression instances. More...

enum	ID { IDBooleanValue = 1, IDCountFN, IDEmptyFN, IDExistsFN, IDExpressionSequence, IDGeneralComparison, IDIfThenClause, IDIgnorableExpression, IDIntegerValue, IDPositionFN, IDStringValue, IDValueComparison, IDRangeVariableReference, IDContextItem, IDUserFunctionCallsite, IDExpressionVariableReference, IDAttributeConstructor, IDUpperCaseFN, IDLowerCaseFN, IDFirstItemPredicate, IDEmptySequence, IDReturnOrderBy, IDLetClause, IDForClause, IDPath, IDNamespaceConstructor, IDArgumentReference, IDGenericPredicate, IDAxisStep, IDFloat, IDCombineNodes, IDUnresolvedVariableReference, IDCardinalityVerifier }

typedef QList< Expression::Ptr >	List

typedef QFlags< Property >	Properties

enum	Property { UseContextItem = 1, DisableElimination = 1 << 1, IsEvaluated = 1 << 2, DisableTypingDeduction = 1 << 3, EmptynessFollowsChild = 1 << 4, RewriteToEmptyOnEmpty = 1 << 5, RequiresFocus = 1 << 6, AffectsOrderOnly = 1 << 7, RequiresContextItem = (1 << 8) \| RequiresFocus, CreatesFocusForLast = 1 << 9, LastOperandIsCollation = 1 << 10, DependsOnLocalVariable = (1 << 11) \| DisableElimination, EvaluationCacheRedundant = (1 << 12), IsNodeConstructor = 1 << 13, RequiresCurrentItem = 1 << 14 }

typedef QExplicitlySharedDataPointer< Expression >	Ptr
	A smart pointer wrapping mutable Expression instances. More...

typedef ::QAbstractXmlForwardIterator< Expression::Ptr >	QAbstractXmlForwardIterator

typedef QVector< Expression::Ptr >	Vector

Public Functions
virtual ExpressionVisitorResult::Ptr	accept (const ExpressionVisitor::Ptr &visitor) const

virtual bool	evaluateEBV (const DynamicContext::Ptr &context) const

virtual Item	evaluateSingleton (const DynamicContext::Ptr &context) const

	PositionalVariableReference (const VariableSlotID slot)

virtual Properties	properties () const

virtual SequenceType::Ptr	staticType () const

Public Functions inherited from QPatternist::VariableReference
VariableSlotID	slot () const

	VariableReference (const VariableSlotID slot)

Public Functions inherited from QPatternist::EmptyContainer
virtual Expression::List	operands () const

virtual void	setOperands (const Expression::List &)

Public Functions inherited from QPatternist::Expression
virtual const SourceLocationReflection *	actualReflection () const
	Returns `this`. More...

virtual void	announceFocusType (const ItemType::Ptr &itemType)

virtual Expression::Ptr	compress (const StaticContext::Ptr &context)

Properties	deepProperties () const
	Computes the union of properties for this Expression and all its descending children. More...

virtual Properties	dependencies () const

virtual QString	description () const

virtual Item::Iterator::Ptr	evaluateSequence (const DynamicContext::Ptr &context) const

virtual void	evaluateToSequenceReceiver (const DynamicContext::Ptr &context) const

virtual ItemType::Ptr	expectedContextItemType () const

	Expression ()

bool	has (const Property prop) const

bool	hasDependency (const Property prop) const

virtual ID	id () const

bool	is (const ID id) const

bool	isEvaluated () const

virtual ItemType::Ptr	newFocusType () const

virtual QList< QExplicitlySharedDataPointer< OptimizationPass > >	optimizationPasses () const

virtual PatternPriority	patternPriority () const

const Expression::Ptr &	rewrite (const Expression::Ptr &to, const StaticContext::Ptr &context) const
	Rewrites this Expression to `to`, and return `to`. More...

virtual Expression::Ptr	typeCheck (const StaticContext::Ptr &context, const SequenceType::Ptr &reqType)

virtual	~Expression ()

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...

Public Functions inherited from QPatternist::CppCastingHelper< Expression >
const TCastTarget *	as () const

TCastTarget *	as ()

Public Functions inherited from QPatternist::SourceLocationReflection
virtual QSourceLocation	sourceLocation () const

	SourceLocationReflection ()

virtual	~SourceLocationReflection ()

Additional Inherited Members
Static Public Functions inherited from QPatternist::Expression
static void	rewrite (Expression::Ptr &old, const Expression::Ptr &New, const StaticContext::Ptr &context)

Public Variables inherited from QSharedData
QAtomicInt	ref

Protected Functions inherited from QPatternist::EmptyContainer
virtual bool	compressOperands (const StaticContext::Ptr &context)

virtual SequenceType::List	expectedOperandTypes () const

Protected Functions inherited from QPatternist::Expression
void	typeCheckOperands (const StaticContext::Ptr &context)

Protected Functions inherited from QPatternist::CppCastingHelper< Expression >
	CppCastingHelper ()

Detailed Description

A reference to an at variable, declared with the for-part in XQuery's FLWOR expression.

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

Definition at line 70 of file qpositionalvariablereference_p.h.

Typedefs

◆ Ptr

typedef QExplicitlySharedDataPointer<PositionalVariableReference> QPatternist::PositionalVariableReference::Ptr

Definition at line 73 of file qpositionalvariablereference_p.h.

Constructors and Destructors

◆ PositionalVariableReference()

PositionalVariableReference::PositionalVariableReference ( const VariableSlotID slot )

Definition at line 51 of file qpositionalvariablereference.cpp.

                                                                                : VariableReference(s)
 {
 }

Functions

◆ accept()

ExpressionVisitorResult::Ptr PositionalVariableReference::accept ( const ExpressionVisitor::Ptr & visitor ) const

virtual

Implements QPatternist::Expression.

Definition at line 79 of file qpositionalvariablereference.cpp.

 {
     return visitor->visit(this);
 }

◆ evaluateEBV()

bool PositionalVariableReference::evaluateEBV ( const DynamicContext::Ptr & context ) const

virtual

Returns always true, since a positional variable is always one or more, and the Effective Boolean Value for that range is always true.

Returns: always true

Reimplemented from QPatternist::Expression.

Definition at line 62 of file qpositionalvariablereference.cpp.

 {
     return true;
 }

◆ evaluateSingleton()

Item PositionalVariableReference::evaluateSingleton ( const DynamicContext::Ptr & context ) const

virtual

Reimplemented from QPatternist::Expression.

Definition at line 55 of file qpositionalvariablereference.cpp.

 {
     Q_ASSERT(context);
     Q_ASSERT(context->positionIterator(slot()));
     return Integer::fromValue(context->positionIterator(slot())->position());
 }

◆ properties()

Expression::Properties PositionalVariableReference::properties ( ) const

virtual

Returns: DisableElimination

Reimplemented from QPatternist::VariableReference.

Definition at line 72 of file qpositionalvariablereference.cpp.

 {
     return DependsOnLocalVariable;
 }

◆ staticType()

SequenceType::Ptr PositionalVariableReference::staticType ( ) const

virtual

Returns: always CommonSequenceTypes::ExactlyOneInteger

Implements QPatternist::Expression.

Definition at line 67 of file qpositionalvariablereference.cpp.

 {
     return CommonSequenceTypes::ExactlyOneInteger;
 }

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

/src/xmlpatterns/expr/qpositionalvariablereference_p.h
/src/xmlpatterns/expr/qpositionalvariablereference.cpp

Public Types

Public Functions

Additional Inherited Members

Detailed Description

Typedefs

◆ Ptr

Constructors and Destructors

◆ PositionalVariableReference()

Functions

◆ accept()

◆ evaluateEBV()

◆ evaluateSingleton()

◆ properties()

◆ staticType()