#ifndef NBTMODIFIER_ABSTRACTTAG_H
#define NBTMODIFIER_ABSTRACTTAG_H

#include <QtGlobal>

class QDataStream;

/**
 * Interface for all NBT tags
 */
class AbstractTag {
public:
    virtual inline ~AbstractTag () {};

    const quint8 id () const;

    static const quint8 extractId (const QByteArray &data);
    static AbstractTag *extractEmptyTag (const QByteArray &data);

    friend QDataStream &operator << (QDataStream &data, const AbstractTag &tag);
    friend QDataStream &operator >> (QDataStream &data, AbstractTag &tag);

protected:
    /**
     * Create a new tag
     *
     * @param id
     */
    explicit AbstractTag (const quint8 id);

    /**
     * Read a tag from a data stream
     *
     * @param data The data stream
     *
     * @return True if read is success, otherwise false
     */
    virtual void readFromData (QDataStream &data) = 0;
    /**
     * Write a tag to a data stream
     *
     * @param data The data stream
     *
     * @return True if write is success, otherwise false
     */
    virtual void writeToData (QDataStream &data) const = 0;

private:
    /**
     * The tag's ID
     */
    const quint8 m_id;
};

#endif //NBTMODIFIER_ABSTRACTTAG_H