QPatternist::CollationChecker Class Reference

Checks that its operand evaluates to a supported string collation. More...

#include <qcollationchecker_p.h>

Inheritance diagram for QPatternist::CollationChecker:

Public Functions
virtual ExpressionVisitorResult::Ptr	accept (const ExpressionVisitor::Ptr &visitor) const
	CollationChecker (const Expression::Ptr &source)
virtual Item	evaluateSingleton (const DynamicContext::Ptr &) const
virtual SequenceType::List	expectedOperandTypes () const
virtual SequenceType::Ptr	staticType () const
Public Functions inherited from QPatternist::SingleContainer
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 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 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
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 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
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::SingleContainer
	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 inherited from QPatternist::SingleContainer
Expression::Ptr	m_operand

Detailed Description

Checks that its operand evaluates to a supported string collation.

CollationChecker is inserted in the AST when an Expression has LastOperandIsCollation set. If the argument that CollationChecker is a string literal the CollationChecker will const-fold as usual, but otherwise will simply pipe through the value of its argument, if it's a supported collation. Otherwise it raise an error, with code ReportContext::FOCH0002.

Author

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

Definition at line 74 of file qcollationchecker_p.h.

Constructors and Destructors

CollationChecker()

CollationChecker::CollationChecker

(

const Expression::Ptr &

source

)

Definition at line 51 of file qcollationchecker.cpp.

                                                              : SingleContainer(source)
{
}

Functions

accept()

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

virtual

Implements QPatternist::Expression.

Definition at line 74 of file qcollationchecker.cpp.

{
    return visitor->visit(this);
}

evaluateSingleton()

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

virtual

Reimplemented from QPatternist::Expression.

Definition at line 55 of file qcollationchecker.cpp.

{
    const Item val(m_operand->evaluateSingleton(context));
    XPathHelper::checkCollationSupport<ReportContext::FOCH0002>(val.stringValue(), context, this);
    return val;
}

expectedOperandTypes()

SequenceType::List CollationChecker::expectedOperandTypes ( ) const

virtual

Expects exactly one string.

Implements QPatternist::Expression.

Definition at line 62 of file qcollationchecker.cpp.

{
    SequenceType::List list;
    list.append(CommonSequenceTypes::ExactlyOneString);
    return list;
}

staticType()

SequenceType::Ptr CollationChecker::staticType ( ) const

virtual

Returns

its operand's static type.

Implements QPatternist::Expression.

Definition at line 69 of file qcollationchecker.cpp.

{
    return m_operand->staticType();
}

---

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

• /src/xmlpatterns/expr/qcollationchecker_p.h
• /src/xmlpatterns/expr/qcollationchecker.cpp