qoptimizerframework_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_OptimizerFramework_H
#define Patternist_OptimizerFramework_H

#include <QSharedData>

#include "qexpression_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist
{
    class ExpressionCreator : public QSharedData
    {
    public:
        typedef QExplicitlySharedDataPointer<ExpressionCreator> Ptr;

        inline ExpressionCreator()
        {
        }

        virtual ~ExpressionCreator();
        virtual Expression::Ptr create(const Expression::List &operands,
                                       const StaticContext::Ptr &context,
                                       const SourceLocationReflection *const) const = 0;

    private:
        Q_DISABLE_COPY(ExpressionCreator)
    };

    class ExpressionIdentifier : public QSharedData
    {
    public:
        typedef QExplicitlySharedDataPointer<ExpressionIdentifier> Ptr;
        typedef QList<ExpressionIdentifier::Ptr> List;

        inline ExpressionIdentifier()
        {
        }

        virtual ~ExpressionIdentifier();
        virtual bool matches(const Expression::Ptr &expr) const = 0;

    private:
        Q_DISABLE_COPY(ExpressionIdentifier)
    };

    class OptimizationPass : public QSharedData
    {
    public:
        typedef QExplicitlySharedDataPointer<OptimizationPass> Ptr;
        typedef QList<OptimizationPass::Ptr> List;

        enum OperandsMatchMethod
        {
            Sequential = 1,

            AnyOrder
        };

        typedef QList<qint8> ExpressionMarker;

        OptimizationPass(const ExpressionIdentifier::Ptr &startID,
                         const ExpressionIdentifier::List &operandIDs,
                         const ExpressionMarker &sourceExpr,
                         const ExpressionCreator::Ptr &resultCtor = ExpressionCreator::Ptr(),
                         const OperandsMatchMethod matchMethod = Sequential);

        const ExpressionIdentifier::Ptr startIdentifier;

        const ExpressionIdentifier::List operandIdentifiers;

        const ExpressionMarker sourceExpression;

        const ExpressionCreator::Ptr resultCreator;

        const OperandsMatchMethod operandsMatchMethod;
    private:
        Q_DISABLE_COPY(OptimizationPass)
    };
}

QT_END_NAMESPACE

QT_END_HEADER

#endif