/**
 * ScopedDebugTimer.h
 * Copyright (c) 2013 ROBLOX Corp. All Rights Reserved.
 */

#include <QTime>
#include <QString>

#pragma once

/**
 * Time a block of code.
 *  Note that the code will be in a new block/scope!
 * 
 *  Example usage:
 * 
 *  TIME_CODE
 *  (
 *      "Total Run Time: %1\n",
 *      SomeLongMethod();
 *  );
 */
#define TIME_CODE(message,code)         \
{                                       \
    ScopedDebugTimer timer(message);    \
    code;                               \
}

/**
 * Outputs time between construction and destruction of object.
 */
class ScopedDebugTimer
{
    public:

        /**
         * Start scoped timer.
         * 
         * @param   message add a %1 to the location in the message you want the time printed
         */
        ScopedDebugTimer(const QString& message)
            : m_Message(message)
        { 
            m_Time.start(); 
        }

        /**
         * Outputs time of object life.
         */
        ~ScopedDebugTimer()
        {
#ifdef Q_WS_WIN32
            OutputDebugString(qPrintable(m_Message.arg(m_Time.elapsed())));
#else
            printf("%s",qPrintable(m_Message.arg(m_Time.elapsed())));
#endif
        }

    private:

        QString m_Message;
        QTime   m_Time;
};