QPatternist::SingleContainer Class Reference

Base class for expressions that has exactly one operand. More...

#include <qsinglecontainer_p.h>

Inheritance diagram for QPatternist::SingleContainer:

Public Functions
virtual bool	compressOperands (const StaticContext::Ptr &)
virtual Expression::List	operands () const
virtual void	setOperands (const Expression::List &operands)
Public Functions inherited from QPatternist::Expression
virtual ExpressionVisitorResult::Ptr	accept (const ExpressionVisitor::Ptr &visitor) const =0
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 bool	evaluateEBV (const DynamicContext::Ptr &context) const
virtual Item::Iterator::Ptr	evaluateSequence (const DynamicContext::Ptr &context) const
virtual Item	evaluateSingleton (const DynamicContext::Ptr &context) const
virtual void	evaluateToSequenceReceiver (const DynamicContext::Ptr &context) const
virtual ItemType::Ptr	expectedContextItemType () const
virtual SequenceType::List	expectedOperandTypes () const =0
	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
virtual Properties	properties () const
const Expression::Ptr &	rewrite (const Expression::Ptr &to, const StaticContext::Ptr &context) const
	Rewrites this Expression to to, and return to. More...
virtual SequenceType::Ptr	staticType () const =0
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 ()

Protected Functions
	SingleContainer (const Expression::Ptr &operand)
Protected Functions inherited from QPatternist::Expression
void	typeCheckOperands (const StaticContext::Ptr &context)
Protected Functions inherited from QPatternist::CppCastingHelper< Expression >
	CppCastingHelper ()

Protected Variables
Expression::Ptr	m_operand

Additional Inherited Members
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
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

Detailed Description

Base class for expressions that has exactly one operand.

Author

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

Definition at line 69 of file qsinglecontainer_p.h.

Constructors and Destructors

SingleContainer()

SingleContainer::SingleContainer ( const Expression::Ptr &  operand )

protected

Definition at line 51 of file qsinglecontainer.cpp.

                                                             : m_operand(operand)
{
    Q_ASSERT(operand);
}

Functions

compressOperands()

bool SingleContainer::compressOperands ( const StaticContext::Ptr &  )

virtual

Returns

true if all operands are constant values of somekind, and are already evaluated. A string literal, is a typical example.

Implements QPatternist::Expression.

Definition at line 69 of file qsinglecontainer.cpp.

{
    rewrite(m_operand, m_operand->compress(context), context);

    return m_operand->isEvaluated();
}

operands()

Expression::List SingleContainer::operands ( ) const

virtual

Returns

the expression's child expressions. For example, a function's arguments is returned here.

If this Expression has no operands, an empty list should be returned.

Implements QPatternist::Expression.

Definition at line 56 of file qsinglecontainer.cpp.

{
    Expression::List list;
    list.append(m_operand);
    return list;
}

setOperands()

void SingleContainer::setOperands ( const Expression::List &  operands )

virtual

Implements QPatternist::Expression.

Definition at line 63 of file qsinglecontainer.cpp.

{
    Q_ASSERT(ops.count() == 1);
    m_operand = ops.first();
}

Properties

m_operand

Expression::Ptr QPatternist::SingleContainer::m_operand

protected

Definition at line 80 of file qsinglecontainer_p.h.

Referenced by QPatternist::EBVExtractor::actualReflection(), QPatternist::DynamicContextStore::actualReflection(), QPatternist::Atomizer::actualReflection(), QPatternist::ItemVerifier::actualReflection(), QPatternist::CurrentItemStore::actualReflection(), QPatternist::CardinalityVerifier::actualReflection(), QPatternist::UntypedAtomicConverter::actualReflection(), QPatternist::EvaluationCache< IsForGlobal >::actualReflection(), QPatternist::QNameConstructor::actualReflection(), QPatternist::CastAs::castToQName(), QPatternist::NodeSortExpression::compress(), QPatternist::CurrentItemStore::compress(), QPatternist::InstanceOf::compress(), QPatternist::SimpleContentConstructor::compress(), QPatternist::CastableAs::compress(), QPatternist::CardinalityVerifier::compress(), QPatternist::FirstItemPredicate::compress(), QPatternist::CopyOf::compress(), QPatternist::EvaluationCache< IsForGlobal >::compress(), QPatternist::CastAs::compress(), QPatternist::OrderBy::compress(), compressOperands(), QPatternist::CommentConstructor::evaluateContent(), QPatternist::CurrentItemStore::evaluateEBV(), QPatternist::DynamicContextStore::evaluateEBV(), QPatternist::EBVExtractor::evaluateEBV(), QPatternist::InstanceOf::evaluateEBV(), QPatternist::CastableAs::evaluateEBV(), QPatternist::NodeSortExpression::evaluateSequence(), QPatternist::CurrentItemStore::evaluateSequence(), QPatternist::DynamicContextStore::evaluateSequence(), QPatternist::CardinalityVerifier::evaluateSequence(), QPatternist::ItemVerifier::evaluateSequence(), QPatternist::Atomizer::evaluateSequence(), QPatternist::ArgumentConverter::evaluateSequence(), QPatternist::UntypedAtomicConverter::evaluateSequence(), QPatternist::EvaluationCache< IsForGlobal >::evaluateSequence(), QPatternist::OrderBy::evaluateSequence(), QPatternist::XSLTSimpleContentConstructor::evaluateSingleton(), QPatternist::TextNodeConstructor::evaluateSingleton(), QPatternist::CurrentItemStore::evaluateSingleton(), QPatternist::DynamicContextStore::evaluateSingleton(), QPatternist::CollationChecker::evaluateSingleton(), QPatternist::DocumentConstructor::evaluateSingleton(), QPatternist::ItemVerifier::evaluateSingleton(), QPatternist::CardinalityVerifier::evaluateSingleton(), QPatternist::AttributeNameValidator::evaluateSingleton(), QPatternist::Atomizer::evaluateSingleton(), QPatternist::SimpleContentConstructor::evaluateSingleton(), QPatternist::NCNameConstructor::evaluateSingleton(), QPatternist::QNameConstructor::evaluateSingleton(), QPatternist::FirstItemPredicate::evaluateSingleton(), QPatternist::ArgumentConverter::evaluateSingleton(), QPatternist::UntypedAtomicConverter::evaluateSingleton(), QPatternist::CastAs::evaluateSingleton(), QPatternist::EvaluationCache< IsForGlobal >::evaluateSingleton(), QPatternist::TextNodeConstructor::evaluateToSequenceReceiver(), QPatternist::DocumentConstructor::evaluateToSequenceReceiver(), QPatternist::CopyOf::evaluateToSequenceReceiver(), QPatternist::CopyOf::expectedContextItemType(), operands(), QPatternist::CurrentItemStore::properties(), QPatternist::CopyOf::properties(), QPatternist::EvaluationCache< IsForGlobal >::properties(), QPatternist::OrderBy::properties(), setOperands(), QPatternist::NodeSortExpression::staticType(), QPatternist::TextNodeConstructor::staticType(), QPatternist::StaticCompatibilityStore::staticType(), QPatternist::ItemVerifier::staticType(), QPatternist::CardinalityVerifier::staticType(), QPatternist::StaticBaseURIStore::staticType(), QPatternist::Atomizer::staticType(), QPatternist::DynamicContextStore::staticType(), QPatternist::SimpleContentConstructor::staticType(), QPatternist::AttributeNameValidator::staticType(), QPatternist::CollationChecker::staticType(), QPatternist::CurrentItemStore::staticType(), QPatternist::UntypedAtomicConverter::staticType(), QPatternist::CopyOf::staticType(), QPatternist::FirstItemPredicate::staticType(), QPatternist::EvaluationCache< IsForGlobal >::staticType(), QPatternist::CastAs::staticType(), QPatternist::OrderBy::staticType(), QPatternist::StaticCompatibilityStore::typeCheck(), QPatternist::StaticBaseURIStore::typeCheck(), QPatternist::NCNameConstructor::typeCheck(), QPatternist::CastableAs::typeCheck(), QPatternist::Atomizer::typeCheck(), QPatternist::TreatAs::typeCheck(), QPatternist::UntypedAtomicConverter::typeCheck(), QPatternist::CastAs::typeCheck(), and QPatternist::EvaluationCache< IsForGlobal >::typeCheck().

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

• /src/xmlpatterns/expr/qsinglecontainer_p.h
• /src/xmlpatterns/expr/qsinglecontainer.cpp