/*

* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:   

*

*/

#ifndef __TTRACER_H__

#define __TTRACER_H__

#include <e32std.h>

#include <e32svr.h>

#include <f32file.h>

//#ifdef _DEBUG

#define TRACER_ENABLED

//#else

//#undef TRACER_ENABLED

//#endif

/** Macro to initialise the tracer. Set the indentation level to zero. */

#ifdef TRACER_ENABLED

#define INITTRACE TTracer t

#else

#define INITTRACE

#endif

/** Macro to trace the function calls.

  * @param a Text to display. Usually class::function */

#ifdef TRACER_ENABLED

#define TRACE(a) TTracer t(_L(a))

#else

#define TRACE(a)

#endif

/** Macro to print a string to the trace window.

  * @param a Text to print.

  */

#ifdef TRACER_ENABLED

#define TRACESTR(a) TTracer::Print(_L(a))

#else

#define TRACESTR

#endif

/** 

 * @ingroup group_xnutils

 * 

 * Class for tracing function calls. Indentation shows the call tree.

 * Also the entry and leave points are time labeled, show timing info is available. 

 */

class TTracer

{

public:

	/** Initialising constructor. */

	IMPORT_C TTracer();

	/** Tracing constructor.

	  * Writes time lable and "Enter: " + the given string.

	  */

	IMPORT_C TTracer(TPtrC aString);

	/** Destructor.

	  * Writes time lable and "Leave: " + the given string.

	  */

	IMPORT_C ~TTracer();

	/** Prints the given string to the trace window.

	  * @param a Text to print.

	  */

    IMPORT_C static void Print(TPtrC aString);

//    static TInt Print(TRefByValue<const TDesC> aFmt,...);

private:

    RFs iFs;

	TBuf<255> iString;

//	RFileLogger iFLogger;

};

#endif // __TTRACER_H__