A reference to a template parameter declared with xsl:param. More...

#include <qtemplateparameterreference_p.h>

Inheritance diagram for QPatternist::TemplateParameterReference:

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

const Expression::Ptr &	sourceExpression () const

virtual SequenceType::Ptr	staticType () const

	TemplateParameterReference (const VariableDeclaration *varDecl)

const VariableDeclaration *	variableDeclaration () const

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 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 ()

Properties
const VariableDeclaration *	m_varDecl

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

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 a template parameter declared with xsl:param.

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

Since: 4.5

Definition at line 70 of file qtemplateparameterreference_p.h.

Constructors and Destructors

◆ TemplateParameterReference()

TemplateParameterReference::TemplateParameterReference ( const VariableDeclaration * varDecl )

Definition at line 50 of file qtemplateparameterreference.cpp.

                                                                                          : m_varDecl(varDecl)
 {
 }

Functions

◆ accept()

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

virtual

Implements QPatternist::Expression.

Definition at line 71 of file qtemplateparameterreference.cpp.

 {
     return visitor->visit(this);
 }

◆ evaluateEBV()

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

virtual

Determines the Effective Boolean Value of the expression.

The Effective Boolean Value of a value is not necessarily the same as converting the value to a new value of type xs:boolean.

Note that this function cannot return the empty sequence, evaluateSingleton() must be overridden in order to be able to do that.

The default implementation results in a type error. Hence, this function must be overridden if such behavior is not of interest.

See also: XML Path Language (XPath) 2.0, 2.4.3 Effective Boolean Value

Reimplemented from QPatternist::Expression.

Definition at line 54 of file qtemplateparameterreference.cpp.

 {
     return context->templateParameterStore()[m_varDecl->name]->evaluateEBV(context);
 }

◆ evaluateSequence()

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

virtual

Evaluate this Expression by iterating over it. This is a central function for evaluating expressions.

Expressions must always always return a valid QAbstractXmlForwardIterator and may never return 0. If an empty result is of interest to be returned, the EmptyIterator should be returned.

The default implementation returns a SingletonIterator over the item returned from evaluateSingleton().

Note: This function may raise an exception when calling, not only when QAbstractXmlForwardIterator::next() is called on the return value. This is because in some cases evaluateSingleton() is called directly.

Reimplemented from QPatternist::Expression.

Definition at line 64 of file qtemplateparameterreference.cpp.

 {
     Q_ASSERT(!m_varDecl->name.isNull());
     Q_ASSERT(context->templateParameterStore()[m_varDecl->name]);
     return context->templateParameterStore()[m_varDecl->name]->evaluateSequence(context);
 }

◆ evaluateSingleton()

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

virtual

Reimplemented from QPatternist::Expression.

Definition at line 59 of file qtemplateparameterreference.cpp.

 {
     return context->templateParameterStore()[m_varDecl->name]->evaluateSingleton(context);
 }

◆ properties()

Expression::Properties TemplateParameterReference::properties ( ) const

virtual

Returns: a bitwise OR'd value of properties, describing the characteristics of the expression. These properties affects how this Expression is treated in for example type checking stages.

The default implementation returns 0. Override and let the function return a different value, if that's of interest.

An important decision when re-implementing properties() is whether to OR in the properties() of ones operands. For instance, if an operand has RequiresFocus set, that flag nost likely applies to the apparent as well, since it depends on its operand.

See also: deepProperties()

Returns: Expression::None, meaning no special properties

Reimplemented from QPatternist::Expression.

Definition at line 76 of file qtemplateparameterreference.cpp.

 {
     return DisableElimination;
 }

◆ sourceExpression()

const Expression::Ptr & QPatternist::TemplateParameterReference::sourceExpression ( ) const

inline

Definition at line 90 of file qtemplateparameterreference_p.h.

     {
         return m_varDecl->expression();
     }

◆ staticType()

SequenceType::Ptr TemplateParameterReference::staticType ( ) const

virtual

Returns: the static type of this Expression. For example, an 'and' expression have as static type xs:boolean

Implements QPatternist::Expression.

Definition at line 81 of file qtemplateparameterreference.cpp.

 {
     /* We can't use m_varDecl->expression()'s static type here, because
      * it's the default argument. */
     if(!m_varDecl->sequenceType)
         return CommonSequenceTypes::ZeroOrMoreItems;
     else
         return m_varDecl->sequenceType;
 }

◆ variableDeclaration()

const VariableDeclaration * QPatternist::TemplateParameterReference::variableDeclaration ( ) const

inline

Definition at line 95 of file qtemplateparameterreference_p.h.

     {
         return m_varDecl;
     }

Properties

◆ m_varDecl

const VariableDeclaration* QPatternist::TemplateParameterReference::m_varDecl

private

Definition at line 87 of file qtemplateparameterreference_p.h.

Referenced by evaluateEBV(), evaluateSequence(), evaluateSingleton(), sourceExpression(), staticType(), and variableDeclaration().

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

/src/xmlpatterns/expr/qtemplateparameterreference_p.h
/src/xmlpatterns/expr/qtemplateparameterreference.cpp

Public Functions

Properties

Additional Inherited Members

Detailed Description

Constructors and Destructors

◆ TemplateParameterReference()

Functions

◆ accept()

◆ evaluateEBV()

◆ evaluateSequence()

◆ evaluateSingleton()

◆ properties()

◆ sourceExpression()

◆ staticType()

◆ variableDeclaration()

Properties

◆ m_varDecl