view base/Debug.h @ 1163:d094598f84bd

Better error reporting for transform load (from RDF and XML)

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2010-2011 Chris Cannam and QMUL.
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef SV_DEBUG_H
#define SV_DEBUG_H

#include <QDebug>
#include <QTextStream>

#include "RealTime.h"

#include <string>
#include <iostream>
#include <fstream>

class QString;
class QUrl;

QDebug &operator<<(QDebug &, const std::string &);
std::ostream &operator<<(std::ostream &, const QString &);
std::ostream &operator<<(std::ostream &, const QUrl &);

using std::cout;
using std::cerr;
using std::endl;

#ifndef NDEBUG

class SVDebug {
public:
    SVDebug();
    ~SVDebug();

    template <typename T>
    inline SVDebug &operator<<(const T &t) {
        if (m_ok) {
            if (m_eol) {
                m_stream << m_prefix << " ";
            }
            m_stream << t;
            m_eol = false;
        }
        return *this;
    }

    inline SVDebug &operator<<(QTextStreamFunction) {
        m_stream << std::endl;
        m_eol = true;
        return *this;
    }

private:
    std::fstream m_stream;
    char *m_prefix;
    bool m_ok;
    bool m_eol;
};

extern SVDebug &getSVDebug();

#define SVDEBUG getSVDebug()

#else

class NoDebug
{
public:
    inline NoDebug() {}
    inline ~NoDebug(){}

    template <typename T>
    inline NoDebug &operator<<(const T &) { return *this; }

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

#define SVDEBUG NoDebug()

#endif /* !NDEBUG */

#endif /* !_DEBUG_H_ */