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

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtCore module of the Qt Toolkit.

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** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

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

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, 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

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**

** If you have questions regarding the use of this file, please contact

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** $QT_END_LICENSE$

**

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

#ifndef QDEBUG_H

#define QDEBUG_H

#include <QtCore/qalgorithms.h>

#include <QtCore/qhash.h>

#include <QtCore/qlist.h>

#include <QtCore/qmap.h>

#include <QtCore/qpair.h>

#include <QtCore/qtextstream.h>

#include <QtCore/qstring.h>

#include <QtCore/qvector.h>

#include <QtCore/qset.h>

#include <QtCore/qcontiguouscache.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Core)

class Q_CORE_EXPORT QDebug

{

    struct Stream {

        Stream(QIODevice *device) : ts(device), ref(1), type(QtDebugMsg), space(true), message_output(false) {}

        Stream(QString *string) : ts(string, QIODevice::WriteOnly), ref(1), type(QtDebugMsg), space(true), message_output(false) {}

        Stream(QtMsgType t) : ts(&buffer, QIODevice::WriteOnly), ref(1), type(t), space(true), message_output(true) {}

        QTextStream ts;

        QString buffer;

        int ref;

        QtMsgType type;

        bool space;

        bool message_output;

    } *stream;

public:

    inline QDebug(QIODevice *device) : stream(new Stream(device)) {}

    inline QDebug(QString *string) : stream(new Stream(string)) {}

    inline QDebug(QtMsgType t) : stream(new Stream(t)) {}

    inline QDebug(const QDebug &o):stream(o.stream) { ++stream->ref; }

    inline QDebug &operator=(const QDebug &other);

    inline ~QDebug() {

        if (!--stream->ref) {

            if(stream->message_output) {

                QT_TRY {

                    qt_message_output(stream->type, stream->buffer.toLocal8Bit().data());

                } QT_CATCH(std::bad_alloc&) { /* We're out of memory - give up. */ }

            }

            delete stream;

        }

    }

    inline QDebug &space() { stream->space = true; stream->ts << ' '; return *this; }

    inline QDebug &nospace() { stream->space = false; return *this; }

    inline QDebug &maybeSpace() { if (stream->space) stream->ts << ' '; return *this; }

    inline QDebug &operator<<(QChar t) { stream->ts << '\'' << t << '\''; return maybeSpace(); }

    inline QDebug &operator<<(QBool t) { stream->ts << (bool(t != 0) ? "true" : "false"); return maybeSpace(); }

    inline QDebug &operator<<(bool t) { stream->ts << (t ? "true" : "false"); return maybeSpace(); }

    inline QDebug &operator<<(char t) { stream->ts << t; return maybeSpace(); }

    inline QDebug &operator<<(signed short t) { stream->ts << t; return maybeSpace(); }

    inline QDebug &operator<<(unsigned short t) { stream->ts << t; return maybeSpace(); }

    inline QDebug &operator<<(signed int t) { stream->ts << t; return maybeSpace(); }

    inline QDebug &operator<<(unsigned int t) { stream->ts << t; return maybeSpace(); }

    inline QDebug &operator<<(signed long t) { stream->ts << t; return maybeSpace(); }

    inline QDebug &operator<<(unsigned long t) { stream->ts << t; return maybeSpace(); }

    inline QDebug &operator<<(qint64 t)

        { stream->ts << QString::number(t); return maybeSpace(); }

    inline QDebug &operator<<(quint64 t)

        { stream->ts << QString::number(t); return maybeSpace(); }

    inline QDebug &operator<<(float t) { stream->ts << t; return maybeSpace(); }

    inline QDebug &operator<<(double t) { stream->ts << t; return maybeSpace(); }

    inline QDebug &operator<<(const char* t) { stream->ts << QString::fromAscii(t); return maybeSpace(); }

    inline QDebug &operator<<(const QString & t) { stream->ts << '\"' << t  << '\"'; return maybeSpace(); }

    inline QDebug &operator<<(const QStringRef & t) { return operator<<(t.toString()); }

    inline QDebug &operator<<(const QLatin1String &t) { stream->ts << '\"'  << t.latin1() << '\"'; return maybeSpace(); }

    inline QDebug &operator<<(const QByteArray & t) { stream->ts  << '\"' << t << '\"'; return maybeSpace(); }

    inline QDebug &operator<<(const void * t) { stream->ts << t; return maybeSpace(); }

    inline QDebug &operator<<(QTextStreamFunction f) {

        stream->ts << f;

        return *this;

    }

    inline QDebug &operator<<(QTextStreamManipulator m)

    { stream->ts << m; return *this; }

};

class QNoDebug

{

public:

    inline QNoDebug(){}

    inline QNoDebug(const QDebug &){}

    inline ~QNoDebug(){}

#if !defined( QT_NO_TEXTSTREAM )

    inline QNoDebug &operator<<(QTextStreamFunction) { return *this; }

    inline QNoDebug &operator<<(QTextStreamManipulator) { return *this; }

#endif

    inline QNoDebug &space() { return *this; }

    inline QNoDebug &nospace() { return *this; }

    inline QNoDebug &maybeSpace() { return *this; }

#ifndef QT_NO_MEMBER_TEMPLATES

    template<typename T>

    inline QNoDebug &operator<<(const T &) { return *this; }

#endif

};

Q_CORE_EXPORT_INLINE QDebug qCritical() { return QDebug(QtCriticalMsg); }

inline QDebug &QDebug::operator=(const QDebug &other)

{

    if (this != &other) {

        QDebug copy(other);

        qSwap(stream, copy.stream);

    }

    return *this;

}

#if defined(FORCE_UREF)

template <class T>

inline QDebug &operator<<(QDebug debug, const QList<T> &list)

#else

template <class T>

inline QDebug operator<<(QDebug debug, const QList<T> &list)

#endif

{

    debug.nospace() << '(';

    for (Q_TYPENAME QList<T>::size_type i = 0; i < list.count(); ++i) {

        if (i)

            debug << ", ";

        debug << list.at(i);

    }

    debug << ')';

    return debug.space();

}

#if defined(FORCE_UREF)

template <typename T>

inline QDebug &operator<<(QDebug debug, const QVector<T> &vec)

#else

template <typename T>

inline QDebug operator<<(QDebug debug, const QVector<T> &vec)

#endif

{

    debug.nospace() << "QVector";

    return operator<<(debug, vec.toList());

}

#if defined(FORCE_UREF)

template <class aKey, class aT>

inline QDebug &operator<<(QDebug debug, const QMap<aKey, aT> &map)

#else

template <class aKey, class aT>

inline QDebug operator<<(QDebug debug, const QMap<aKey, aT> &map)

#endif

{

    debug.nospace() << "QMap(";

    for (typename QMap<aKey, aT>::const_iterator it = map.constBegin();

         it != map.constEnd(); ++it) {

        debug << '(' << it.key() << ", " << it.value() << ')';

    }

    debug << ')';

    return debug.space();

}

#if defined(FORCE_UREF)

template <class aKey, class aT>

inline QDebug &operator<<(QDebug debug, const QHash<aKey, aT> &hash)

#else

template <class aKey, class aT>

inline QDebug operator<<(QDebug debug, const QHash<aKey, aT> &hash)

#endif

{

    debug.nospace() << "QHash(";

    for (typename QHash<aKey, aT>::const_iterator it = hash.constBegin();

            it != hash.constEnd(); ++it)

        debug << '(' << it.key() << ", " << it.value() << ')';

    debug << ')';

    return debug.space();

}

#if defined(FORCE_UREF)

template <class T1, class T2>

inline QDebug &operator<<(QDebug debug, const QPair<T1, T2> &pair)

#else

template <class T1, class T2>

inline QDebug operator<<(QDebug debug, const QPair<T1, T2> &pair)

#endif

{

    debug.nospace() << "QPair(" << pair.first << ',' << pair.second << ')';

    return debug.space();

}

template <typename T>

inline QDebug operator<<(QDebug debug, const QSet<T> &set)

{

    debug.nospace() << "QSet";

    return operator<<(debug, set.toList());

}

#if defined(FORCE_UREF)

template <class T>

inline QDebug &operator<<(QDebug debug, const QContiguousCache<T> &cache)

#else

template <class T>

inline QDebug operator<<(QDebug debug, const QContiguousCache<T> &cache)

#endif

{

    debug.nospace() << "QContiguousCache(";

    for (int i = cache.firstIndex(); i <= cache.lastIndex(); ++i) {

        debug << cache[i];

        if (i != cache.lastIndex())

            debug << ", ";

    }

    debug << ')';

    return debug.space();

}

#if !defined(QT_NO_DEBUG_STREAM)

Q_CORE_EXPORT_INLINE QDebug qDebug() { return QDebug(QtDebugMsg); }

#else // QT_NO_DEBUG_STREAM

#undef qDebug

inline QNoDebug qDebug() { return QNoDebug(); }

#define qDebug QT_NO_QDEBUG_MACRO

#ifdef QT_NO_MEMBER_TEMPLATES

template<typename T>

inline QNoDebug operator<<(QNoDebug debug, const T &) { return debug; }

#endif

#endif

#if !defined(QT_NO_WARNING_OUTPUT)

Q_CORE_EXPORT_INLINE QDebug qWarning() { return QDebug(QtWarningMsg); }

#else

#undef qWarning

inline QNoDebug qWarning() { return QNoDebug(); }

#define qWarning QT_NO_QWARNING_MACRO

#endif

QT_END_NAMESPACE

QT_END_HEADER

#endif // QDEBUG_H