qgenericpredicate_p.h

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//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.

#ifndef Patternist_GenericPredicate_H
#define Patternist_GenericPredicate_H

#include "qpaircontainer_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist
{
    class GenericPredicate : public PairContainer
    {
    public:

        static Expression::Ptr create(const Expression::Ptr &sourceExpression,
                                      const Expression::Ptr &predicateExpression,
                                      const StaticContext::Ptr &context,
                                      const QSourceLocation &location);

        static Expression::Ptr createFirstItem(const Expression::Ptr &sourceExpression);

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

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

        inline Item mapToItem(const Item &subject,
                                   const DynamicContext::Ptr &) const;

        virtual SequenceType::List expectedOperandTypes() const;
        virtual SequenceType::Ptr staticType() const;
        virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
        virtual ID id() const;

        virtual Properties properties() const;

        virtual QString description() const;

    protected:

        GenericPredicate(const Expression::Ptr &sourceExpression,
                         const Expression::Ptr &predicate);

        virtual ItemType::Ptr newFocusType() const;

    private:
        typedef QExplicitlySharedDataPointer<const GenericPredicate> ConstPtr;
    };
}

QT_END_NAMESPACE

QT_END_HEADER

#endif