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** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
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** This file is part of Qt Creator.
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****************************************************************************/

#ifndef MOVEOBJECTBEFOREOBJECTVISITOR_H
#define MOVEOBJECTBEFOREOBJECTVISITOR_H

#include "qmlrewriter.h"

#include <QStack>

namespace QmlDesigner {
namespace Internal {

class MoveObjectBeforeObjectVisitor: public QMLRewriter
{
public:
    MoveObjectBeforeObjectVisitor(QmlDesigner::TextModifier &modifier,
                                  quint32 movingObjectLocation,
                                  bool inDefaultProperty);
    MoveObjectBeforeObjectVisitor(QmlDesigner::TextModifier &modifier,
                                  quint32 movingObjectLocation,
                                  quint32 beforeObjectLocation,
                                  bool inDefaultProperty);

    bool operator ()(QmlJS::AST::UiProgram *ast);

protected:
    virtual bool preVisit(QmlJS::AST::Node *ast);
    virtual void postVisit(QmlJS::AST::Node *ast);

    virtual bool visit(QmlJS::AST::UiObjectDefinition *ast);

private:
    bool foundEverything() const
    { return movingObject != 0 && !movingObjectParents.isEmpty() && (toEnd || beforeObject != 0); }

    void doMove();

    QmlJS::AST::Node *movingObjectParent() const;
    QmlJS::AST::SourceLocation lastParentLocation() const;

private:
    QStack<QmlJS::AST::Node *> parents;
    quint32 movingObjectLocation;
    bool inDefaultProperty;
    bool toEnd;
    quint32 beforeObjectLocation;

    QmlJS::AST::UiObjectDefinition *movingObject;
    QmlJS::AST::UiObjectDefinition *beforeObject;
    ASTPath movingObjectParents;
};

} // namespace Internal
} // namespace QmlDesigner

#endif // MOVEOBJECTBEFOREOBJECTVISITOR_H