predicate.h

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/*
    Copyright 2006 Kevin Ottens <ervin@kde.org>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) version 3, or any
    later version accepted by the membership of KDE e.V. (or its
    successor approved by the membership of KDE e.V.), which shall
    act as a proxy defined in Section 6 of version 3 of the license.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef SOLID_PREDICATE_H
#define SOLID_PREDICATE_H

#include <QtCore/QVariant>
#include <QtCore/QSet>

#include <solid/solid_export.h>

#include <solid/deviceinterface.h>

namespace Solid
{
    class Device;

    class SOLID_EXPORT Predicate
    {
    public:
        enum ComparisonOperator { Equals, Mask };

        enum Type { PropertyCheck, Conjunction, Disjunction, InterfaceCheck };

        Predicate();

        Predicate(const Predicate &other);

        Predicate(const DeviceInterface::Type &ifaceType,
                   const QString &property, const QVariant &value,
                   ComparisonOperator compOperator = Equals);

        Predicate(const QString &ifaceName,
                   const QString &property, const QVariant &value,
                   ComparisonOperator compOperator = Equals);

        explicit Predicate(const DeviceInterface::Type &ifaceType);

        explicit Predicate(const QString &ifaceName);

        ~Predicate();


        Predicate &operator=(const Predicate &other);


        Predicate operator &(const Predicate &other);

        Predicate &operator &=(const Predicate &other);

        Predicate operator|(const Predicate &other);

        Predicate &operator|=(const Predicate &other);

        bool isValid() const;

        bool matches(const Device &device) const;

        QSet<DeviceInterface::Type> usedTypes() const;

        QString toString() const;

        static Predicate fromString(const QString &predicate);

        Type type() const;

        DeviceInterface::Type interfaceType() const;

        QString propertyName() const;

        QVariant matchingValue() const;

        ComparisonOperator comparisonOperator() const;

        Predicate firstOperand() const;

        Predicate secondOperand() const;

    private:
        class Private;
        Private * const d;
    };
}

#endif