/****************************************************************************

**

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** No Commercial Usage

** This file contains pre-release code and may not be distributed.

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** contained in the Technology Preview License Agreement accompanying

** this package.

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** GNU Lesser General Public License Usage

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** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

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** ensure the GNU Lesser General Public License version 2.1 requirements

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****************************************************************************/

/*

  location.h

*/

#ifndef LOCATION_H

#define LOCATION_H

#include <qstack.h>

#include "tr.h"

#define QDOC_QML

QT_BEGIN_NAMESPACE

class Config;

class QRegExp;

class Location

{

 public:

    Location();

    Location(const QString& filePath);

    Location(const Location& other);

    ~Location() { delete stk; }

    Location& operator=(const Location& other);

    void start();

    void advance(QChar ch);

    void advanceLines(int n) { stkTop->lineNo += n; stkTop->columnNo = 1; }

    void push(const QString& filePath);

    void pop();

    void setEtc(bool etc) { etcetera = etc; }

    void setLineNo(int no) { stkTop->lineNo = no; }

    void setColumnNo(int no) { stkTop->columnNo = no; }

    bool isEmpty() const { return stkDepth == 0; }

    int depth() const { return stkDepth; }

    const QString& filePath() const { return stkTop->filePath; }

    QString fileName() const;

    int lineNo() const { return stkTop->lineNo; }

    int columnNo() const { return stkTop->columnNo; }

    bool etc() const { return etcetera; }

    void warning(const QString& message, 

                 const QString& details = QString()) const;

    void error(const QString& message, 

               const QString& details = QString()) const;

    void fatal(const QString& message, 

               const QString& details = QString()) const;

    QT_STATIC_CONST Location null;

    static void initialize(const Config& config);

    static void terminate();

    static void information(const QString& message);

    static void internalError(const QString& hint);

 private:

    enum MessageType { Warning, Error };

    struct StackEntry

    {

	QString filePath;

	int lineNo;

	int columnNo;

    };

    void emitMessage(MessageType type, 

                     const QString& message,

                     const QString& details) const;

    QString toString() const;

    QString top() const;

 private:

    StackEntry stkBottom;

    QStack<StackEntry> *stk;

    StackEntry *stkTop;

    int stkDepth;

    bool etcetera;

    static int tabSize;

    static QString programName;

    static QRegExp *spuriousRegExp;

};

QT_END_NAMESPACE

#endif