/***************************************************************************
 * script.h
 * This file is part of the KDE project
 * copyright (C)2004-2006 by Sebastian Sauer (mail@dipe.org)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 * This program 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
 * Library General Public License for more details.
 * You should have received a copy of the GNU Library General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 ***************************************************************************/

#ifndef KROSS_SCRIPT_H
#define KROSS_SCRIPT_H

#include "errorinterface.h"

#include <QStringList>
#include <QVariant>
#include <QObject>

namespace Kross
{

// Forward declarations.
class Interpreter;
class Action;

/**
 * Base class for interpreter dependent functionality
 * each script provides.
 *
 * Each \a Action holds a pointer to a class
 * that implements the \a Script functionality for the
 * defined \a Interpreter .
 */
class KROSSCORE_EXPORT Script : public QObject, public ErrorInterface
{
    Q_OBJECT
public:

    /**
     * Constructor.
     *
     * \param interpreter The \a Interpreter instance that
     *        was used to created this \a Script instance.
     * \param Action The \a Action instance this script is
     *        associated with.
     */
    Script(Interpreter *interpreter, Action *action);

    /**
     * Destructor.
     */
    virtual ~Script();

public Q_SLOTS:

    /**
     * \return the \a Interpreter instance that was used to created
     * this \a Script .
     */
    Interpreter *interpreter() const;

    /**
     * \return the \a Action instance associated with this \a Script .
     */
    Action *action() const;

    /**
     * Execute the script.
     */
    virtual void execute() = 0;

    /**
     * \return the list of functionnames.
     */
    virtual QStringList functionNames() = 0;

    /**
     * Call a function in the script.
     *
     * \param name The name of the function which should be called.
     * \param args The optional list of arguments.
     */
    virtual QVariant callFunction(const QString &name, const QVariantList &args = QVariantList()) = 0;

    /**
     * Evaluate some scripting code.
     *
     * \param code The scripting code to evaluate.
     * \return The return value of the evaluation.
     */
    virtual QVariant evaluate(const QByteArray &code) = 0;

private:
    /// \internal d-pointer class.
    class Private;
    /// \internal d-pointer instance.
    Private *const d;
};

}

#endif

