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#ifndef PROITEMS_H

#define PROITEMS_H

#include <QtCore/QString>

#include <QtCore/QList>

QT_BEGIN_NAMESPACE

struct AbstractProItemVisitor;

class ProItem

{

public:

    enum ProItemKind {

        ValueKind,

        FunctionKind,

        ConditionKind,

        OperatorKind,

        BlockKind

    };

    enum ProItemReturn {

        ReturnFalse,

        ReturnTrue,

        ReturnBreak,

        ReturnNext,

        ReturnLoop,

        ReturnSkip,

        ReturnReturn

   };

    ProItem() : m_lineNumber(0) {}

    virtual ~ProItem() {}

    virtual ProItemKind kind() const = 0;

    void setComment(const QString &comment);

    QString comment() const;

    virtual ProItemReturn Accept(AbstractProItemVisitor *visitor) = 0;

    int lineNumber() const { return m_lineNumber; }

    void setLineNumber(int lineNumber) { m_lineNumber = lineNumber; }

private:

    QString m_comment;

    int m_lineNumber;

};

class ProBlock : public ProItem

{

public:

    enum ProBlockKind {

        NormalKind          = 0x00,

        ScopeKind           = 0x01,

        ScopeContentsKind   = 0x02,

        VariableKind        = 0x04,

        ProFileKind         = 0x08,

        FunctionBodyKind    = 0x10,

        SingleLine          = 0x80

    };

    ProBlock(ProBlock *parent);

    ~ProBlock();

    void appendItem(ProItem *proitem);

    void setItems(const QList<ProItem *> &proitems);

    QList<ProItem *> items() const;

    void setBlockKind(int blockKind);

    int blockKind() const;

    void setParent(ProBlock *parent);

    ProBlock *parent() const;

    void ref() { ++m_refCount; }

    void deref() { if (!--m_refCount) delete this; }

    ProItem::ProItemKind kind() const;

    virtual ProItemReturn Accept(AbstractProItemVisitor *visitor);

protected:

    QList<ProItem *> m_proitems;

private:

    ProBlock *m_parent;

    int m_blockKind;

    int m_refCount;

};

class ProVariable : public ProBlock

{

public:

    enum VariableOperator {

        AddOperator         = 0,

        RemoveOperator      = 1,

        ReplaceOperator     = 2,

        SetOperator         = 3,

        UniqueAddOperator   = 4

    };

    ProVariable(const QString &name, ProBlock *parent);

    void setVariableOperator(VariableOperator variableKind);

    VariableOperator variableOperator() const;

    void setVariable(const QString &name);

    QString variable() const;

    virtual ProItemReturn Accept(AbstractProItemVisitor *visitor);

private:

    VariableOperator m_variableKind;

    QString m_variable;

};

class ProValue : public ProItem

{

public:

    ProValue(const QString &value, ProVariable *variable);

    void setValue(const QString &value);

    QString value() const;

    void setVariable(ProVariable *variable);

    ProVariable *variable() const;

    ProItem::ProItemKind kind() const;

    virtual ProItemReturn Accept(AbstractProItemVisitor *visitor);

private:

    QString m_value;

    ProVariable *m_variable;

};

class ProFunction : public ProItem

{

public:

    explicit ProFunction(const QString &text);

    void setText(const QString &text);

    QString text() const;

    ProItem::ProItemKind kind() const;

    virtual ProItemReturn Accept(AbstractProItemVisitor *visitor);

private:

    QString m_text;

};

class ProCondition : public ProItem

{

public:

    explicit ProCondition(const QString &text);

    void setText(const QString &text);

    QString text() const;

    ProItem::ProItemKind kind() const;

    virtual ProItemReturn Accept(AbstractProItemVisitor *visitor);

private:

    QString m_text;

};

class ProOperator : public ProItem

{

public:

    enum OperatorKind {

        OrOperator      = 1,

        NotOperator     = 2

    };

    explicit ProOperator(OperatorKind operatorKind);

    void setOperatorKind(OperatorKind operatorKind);

    OperatorKind operatorKind() const;

    ProItem::ProItemKind kind() const;

    virtual ProItemReturn Accept(AbstractProItemVisitor *visitor);

private:

    OperatorKind m_operatorKind;

};

class ProFile : public ProBlock

{

public:

    explicit ProFile(const QString &fileName);

    ~ProFile();

    QString displayFileName() const;

    QString fileName() const;

    QString directoryName() const;

    void setModified(bool modified);

    bool isModified() const;

    virtual ProItemReturn Accept(AbstractProItemVisitor *visitor);

private:

    QString m_fileName;

    QString m_displayFileName;

    QString m_directoryName;

    bool m_modified;

};

QT_END_NAMESPACE

#endif // PROITEMS_H