/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
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** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
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** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
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** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QDECLARATIVEREWRITE_P_H
#define QDECLARATIVEREWRITE_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <private/textwriter_p.h>
#include <private/qdeclarativejslexer_p.h>
#include <private/qdeclarativejsparser_p.h>
#include <private/qdeclarativejsmemorypool_p.h>

QT_BEGIN_NAMESPACE

namespace QDeclarativeRewrite {
using namespace QDeclarativeJS;

class SharedBindingTester : protected AST::Visitor
{
    bool _sharable;
public:
    bool isSharable(const QString &code);
    bool isSharable(AST::Node *Node);
    
    virtual bool visit(AST::FunctionDeclaration *) { _sharable = false; return false; }
    virtual bool visit(AST::FunctionExpression *) { _sharable = false; return false; }
    virtual bool visit(AST::CallExpression *) { _sharable = false; return false; }
};

class RewriteBinding: protected AST::Visitor
{
    unsigned _position;
    TextWriter *_writer;
    QString _name;
    const QString *_code;

public:
    QString operator()(const QString &code, bool *ok = 0, bool *sharable = 0);
    QString operator()(QDeclarativeJS::AST::Node *node, const QString &code, bool *sharable = 0);

    //name of the function:  used for the debugger
    void setName(const QString &name) { _name = name; }

protected:
    using AST::Visitor::visit;

    void accept(AST::Node *node);
    QString rewrite(QString code, unsigned position, AST::Statement *node);
    void rewriteCaseStatements(AST::StatementList *statements, bool rewriteTheLastStatement);

    virtual bool visit(AST::StringLiteral *ast);
    virtual bool visit(AST::Block *ast);
    virtual bool visit(AST::ExpressionStatement *ast);

    virtual bool visit(AST::DoWhileStatement *ast);
    virtual void endVisit(AST::DoWhileStatement *ast);

    virtual bool visit(AST::WhileStatement *ast);
    virtual void endVisit(AST::WhileStatement *ast);

    virtual bool visit(AST::ForStatement *ast);
    virtual void endVisit(AST::ForStatement *ast);

    virtual bool visit(AST::LocalForStatement *ast);
    virtual void endVisit(AST::LocalForStatement *ast);

    virtual bool visit(AST::ForEachStatement *ast);
    virtual void endVisit(AST::ForEachStatement *ast);

    virtual bool visit(AST::LocalForEachStatement *ast);
    virtual void endVisit(AST::LocalForEachStatement *ast);

    virtual bool visit(AST::CaseBlock *ast);

private:
    int _inLoop;
};

class RewriteSignalHandler: protected AST::Visitor
{
    QList<int> _strStarts;
    QList<int> _strLens;
    int _position;

public:
    QString operator()(QDeclarativeJS::AST::Node *node, const QString &code, const QString &name);

protected:
    void rewriteMultilineStrings(QString &code);

    using AST::Visitor::visit;
    void accept(AST::Node *node);
    virtual bool visit(AST::StringLiteral *ast);
};

} // namespace QDeclarativeRewrite

QT_END_NAMESPACE

#endif // QDECLARATIVEREWRITE_P_H