qfirstitempredicate_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_FirstItemPredicate_H
#define Patternist_FirstItemPredicate_H

#include "qsinglecontainer_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist
{
    class FirstItemPredicate : public SingleContainer
    {
    public:
        FirstItemPredicate(const Expression::Ptr &source);

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

        virtual SequenceType::List expectedOperandTypes() const;

        virtual SequenceType::Ptr staticType() const;
        virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;

        virtual Expression::Ptr compress(const StaticContext::Ptr &context);

        virtual ID id() const;
    };
}

QT_END_NAMESPACE

QT_END_HEADER

#endif