QPatternist::ComparisonIdentifier Class Reference

Determines whether an Expression is a value or general comparison or both, with a certain operator. More...

#include <qoptimizerblocks_p.h>

Inheritance diagram for QPatternist::ComparisonIdentifier:

Public Functions
	ComparisonIdentifier (const QVector< Expression::ID > comparatorHosts, const AtomicComparator::Operator op)
virtual bool	matches (const Expression::Ptr &expr) const
Public Functions inherited from QPatternist::ExpressionIdentifier
	ExpressionIdentifier ()
virtual	~ExpressionIdentifier ()
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
const QVector< Expression::ID >	m_hosts
const AtomicComparator::Operator	m_op

Additional Inherited Members
Public Types inherited from QPatternist::ExpressionIdentifier
typedef QList< ExpressionIdentifier::Ptr >	List
typedef QExplicitlySharedDataPointer< ExpressionIdentifier >	Ptr
Public Variables inherited from QSharedData
QAtomicInt	ref

Detailed Description

Determines whether an Expression is a value or general comparison or both, with a certain operator.

Author

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

Definition at line 120 of file qoptimizerblocks_p.h.

Constructors and Destructors

ComparisonIdentifier()

ComparisonIdentifier::ComparisonIdentifier	(	const QVector< Expression::ID >	comparatorHosts,
		const AtomicComparator::Operator	op
	)

Parameters

comparatorHosts	the possible parent that may have the operator. This may be Expression::IDGeneralComparison or Expression::IDValueComparison. The two values may also be OR'd, meaning any of them will do.
op	the operator that the comparator host must have. For example, if op is AtomicComparator::OperatorGreatorOrEqual this ComparisonIdentifier will match operator >= in the case of IDGeneralComparison and 'ge' in the case of IDValueComparison.

Definition at line 66 of file qoptimizerblocks.cpp.

                                                                              : m_hosts(hosts),
                                                                                  m_op(op)
{
}

Functions

matches()

bool ComparisonIdentifier::matches ( const Expression::Ptr &  expr ) const

virtual

Returns

true, if expr is a ValueComparison with the operator passed in ComparisonIdentifier().

Implements QPatternist::ExpressionIdentifier.

Definition at line 72 of file qoptimizerblocks.cpp.

{
    const Expression::ID eID = e->id();

    if(eID == Expression::IDGeneralComparison)
    {
        if(m_hosts.contains(Expression::IDGeneralComparison))
            return e->as<GeneralComparison>()->operatorID() == m_op;
        else
            return false;
    }
    else if(eID == Expression::IDValueComparison)
    {
        if(m_hosts.contains(Expression::IDValueComparison))
            return e->as<ValueComparison>()->operatorID() == m_op;
        else
            return false;
    }
    else
        return false;
}

Properties

m_hosts

const QVector<Expression::ID> QPatternist::ComparisonIdentifier::m_hosts

private

Definition at line 145 of file qoptimizerblocks_p.h.

Referenced by matches().

m_op

const AtomicComparator::Operator QPatternist::ComparisonIdentifier::m_op

private

Definition at line 146 of file qoptimizerblocks_p.h.

Referenced by matches().

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

• /src/xmlpatterns/expr/qoptimizerblocks_p.h
• /src/xmlpatterns/expr/qoptimizerblocks.cpp