/*

* Copyright (c) 2006-2007 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:   Interface of debugging utilities.

*

*/

#ifndef RUBYDEBUG_H

#define RUBYDEBUG_H

#include "rubydebugcfg.h"

//  INCLUDES

#include <e32svr.h> // For RDebug

#ifndef RUBY_DISABLE_FUNCTION_NAMES

    // No sense to store function name longer, than can be printed

    // 0x100 is the internal RDebug limit

    const TInt __K_RUBY_FUNCTION_NAME_LENGTH = 0x50;    

    // Prepares function name for printing

    #define __RUBY_PREPARE_FUNCTION_NAME \

    TBuf<__K_RUBY_FUNCTION_NAME_LENGTH> __ruby_function_name__;\

    __ruby_function_name__.Copy( TPtrC8( (TText8*)&__PRETTY_FUNCTION__ ).Left( __K_RUBY_FUNCTION_NAME_LENGTH ) ); \

    // Token to paste the function name into

    #define __K_RUBY_FUNCTION_NAME_TOKEN "%S "

    // Comma and function name

    #define __RUBY_FUNCTION_NAME __ruby_function_name__

    // A wrapper that prepares and supplies the function name as __ruby_function_name__

    #define __RUBY_FUNCTION_NAMED( text ) \

	    {\

	    __RUBY_PREPARE_FUNCTION_NAME;\

	    text;\

	    }

	#define __RUBY_FUNCTION_NAME_POINTER8 (TText8*)&__PRETTY_FUNCTION__

#else  // RUBY_DISABLE_FUNCTION_NAMES

    #define __RUBY_PREPARE_FUNCTION_NAME

    // Don't print the function name

    #define __K_RUBY_FUNCTION_NAME_TOKEN ""

    // exclude the whole token, with the comma

    #define __RUBY_FUNCTION_NAME KNullDesC

    // no wrapping

    #define __RUBY_FUNCTION_NAMED( text ) text

    #define __RUBY_FUNCTION_NAME_POINTER8 NULL

#endif // RUBY_DISABLE_FUNCTION_NAMES

// Macro for printing filename both in unicode and non-unicode builds

#ifdef _UNICODE

	#define __RUBY_WIDEN2(x) L ## x

	#define __RUBY_WIDEN(x) __RUBY_WIDEN2(x)

	#define __RUBY_DBG_FILE__ __RUBY_WIDEN(__FILE__)

#else

	#define __RUBY_DBG_FILE__ __FILE__

#endif//_UNICODE

// Debugging is enabled only in _DEBUG builds

//#ifdef _DEBUG 

// Select the debug output method

#ifndef __RUBY_DEBUG_TRACES_TO_FILE

#define RUBY_DEBUG_METHOD RDebug::Print

#else

#define RUBY_DEBUG_METHOD RRubyDebug::PrintToFile

#endif // __RUBY_DEBUG_TRACES_TO_FILE

//#endif // _DEBUG

#if defined(_DEBUG) && !defined(__RUBY_DEBUG_DISABLED)

//	#define RUBY_DEBUG_BLOCK(text) \

//  	RRubyDebug trace_trace( _S(text), _S("" ## __RUBY_DBG_FILE__) , __LINE__, EFalse ); \

//  	CleanupReleasePushL( trace_trace )

//  	#define RUBY_DEBUG_BLOCKL(text) \

//  	RRubyDebug trace_trace( _S(text), _S("" ## __RUBY_DBG_FILE__), __LINE__, ETrue ); \

//  	CleanupReleasePushL( trace_trace )

// A temporary fix to cope with builds on RVCT 530. It didn't compile with _RUBY_DBG_FILE

	#define RUBY_DEBUG_BLOCK(text) \

  	RRubyDebug trace_trace( _S(text), _S("") , __LINE__, EFalse, __RUBY_FUNCTION_NAME_POINTER8 ); \

  	CleanupReleasePushL( trace_trace )

  	#define RUBY_DEBUG_BLOCKL(text) \

  	RRubyDebug trace_trace( _S(text), _S(""), __LINE__, ETrue, __RUBY_FUNCTION_NAME_POINTER8 ); \

  	CleanupReleasePushL( trace_trace )

	#define RUBY_DEBUG0(text) \

        __RUBY_FUNCTION_NAMED( RUBY_DEBUG_METHOD( _L("%S %S "L##text L## " [L:%d]"), &__K_RUBY_HEADER, &__RUBY_FUNCTION_NAME, __LINE__ ) )

    #define RUBY_DEBUG1(text, p1) \

        __RUBY_FUNCTION_NAMED( RUBY_DEBUG_METHOD( _L("%S %S "L##text L## " [L:%d]"), &__K_RUBY_HEADER, &__RUBY_FUNCTION_NAME, p1, __LINE__ ) )

    #define RUBY_DEBUG2(text, p1, p2) \

        __RUBY_FUNCTION_NAMED( RUBY_DEBUG_METHOD( _L("%S %S "L##text L## " [L:%d]"), &__K_RUBY_HEADER, &__RUBY_FUNCTION_NAME, p1, p2, __LINE__ ) )

    #define RUBY_DEBUG3(text, p1, p2, p3) \

        __RUBY_FUNCTION_NAMED( RUBY_DEBUG_METHOD( _L("%S %S "L##text L## " [L:%d]"), &__K_RUBY_HEADER, &__RUBY_FUNCTION_NAME, p1, p2, p3, __LINE__ ) )

#else // Debugging disabled

	// Macros expand to nothing:

	#define RUBY_DEBUG_BLOCK(text)

	#define RUBY_DEBUG0(text)    

	#define RUBY_DEBUG1(text, p1)

	#define RUBY_DEBUG2(text, p1, p2)

    #define RUBY_DEBUG3(text, p1, p2, p3)

	#define RUBY_DEBUG_BLOCKL(text)

#endif // defined(_DEBUG) && !defined(__RUBY_DEBUG_DISABLED)

#if !defined(RUBY_DISABLE_ERRORS) || defined(_DEBUG)

	// if error messages are allowed (even for UREL)

	#define RUBY_ERROR0(text) \

	__RUBY_FUNCTION_NAMED( \

	    RUBY_DEBUG_METHOD( _L("%S[Error!] %S "L##text L## " [F:%s][L:%d][TId:%d]"), &__K_RUBY_HEADER, &__RUBY_FUNCTION_NAME, __RUBY_DBG_FILE__, __LINE__, TUint(RThread().Id()) )\

	)

	#define RUBY_ERROR1(text, p1) \

	__RUBY_FUNCTION_NAMED( \

	RUBY_DEBUG_METHOD( _L("%S[Error!] %S "L##text L## " [F:%s][L:%d][TId:%d]"), &__K_RUBY_HEADER, &__RUBY_FUNCTION_NAME, p1, __RUBY_DBG_FILE__, __LINE__, TUint(RThread().Id()) )\

	)

	#define RUBY_ERROR2(text, p1, p2) \

	__RUBY_FUNCTION_NAMED( \

	RUBY_DEBUG_METHOD( _L("%S[Error!] %S "L##text L## " [F:%s][L:%d][TId:%d]"), &__K_RUBY_HEADER, &__RUBY_FUNCTION_NAME, p1, p2, __RUBY_DBG_FILE__, __LINE__, TUint(RThread().Id()) )\

	)

#else

	// error reporting disabled

	// Macros expand to nothing:

	#define RUBY_ERROR_BLOCK(text)

	#define RUBY_ERROR0(text)    

	#define RUBY_ERROR1(text, p1)

	#define RUBY_ERROR2(text, p1, p2)

#endif  // !defined(RUBY_DISABLE_ERRORS)

#if !defined(RUBY_DISABLE_ASSERT_DEBUG) || defined(_DEBUG)

	#define RUBY_ASSERT_DEBUG(condition, action) \

	  __RUBY_FUNCTION_NAMED(\

		__ASSERT_ALWAYS( condition, RUBY_DEBUG_METHOD(  _L("%S[Error!] %S [Assert failed!] "L###condition L## " [F:%s][L:%d][TId:%d]"), &__K_RUBY_HEADER, &__RUBY_FUNCTION_NAME, __RUBY_DBG_FILE__, __LINE__, TUint(RThread().Id())) ); \

		__ASSERT_DEBUG( (condition), (action) )\

	  );

#else

	// Macro expands to default:

	#define RUBY_ASSERT_DEBUG(condition, action) __ASSERT_DEBUG(condition,action)

#endif

// Same as TRAP_IGNORE, but in case of leave, prints the leave code via RUBY_ERROR

// Can be disabled by RUBY_DISABLE_TRAP_IGNORE or RUBY_DISABLE_ERRORS

// If disabled, is equivalent to TRAP_IGNORE

// @see rubydebugcfg.h

#ifndef RUBY_DISABLE_TRAP_IGNORE 

    #define RUBY_TRAP_IGNORE( s ) \

        {\

        TRAPD( err, s );\

        if( err != KErrNone )\

            {\

            RUBY_ERROR1( "RUBY_TRAP_IGNORE leaves with [%d]", err );\

            }\

        }

#else  // RUBY_DISABLE_TRAP_IGNORE 

    #define RUBY_TRAP_IGNORE( s ) TRAP_IGNORE( s )

#endif  // RUBY_DISABLE_TRAP_IGNORE 

// DATA TYPES

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

// CLASS DECLARATION

/**

*  Debug class for printing START, EXIT and LEAVE messages to RDebug in every 

*  code block. Must be placed in the very beginning of a code block and the

*  code block cannot leave items in the cleanup stack (like NewLC). 

*

*  @since Series 60 2.8

*

*  @note If this object is not the topmost item when a code block is exited, 

*        E32USER-CBase 90 panic is raised (@see CleanupStack::Pop( TAny* )).

*/

class RRubyDebug

    {

    public:

        /**

        * C++ constructor.

        * @since Series 60 2.8

        * @param aMsg Debug message.

        * @param aCalledFromL ETrue if called from RUBY_DEBUG_BLOCK_L

        */

        inline RRubyDebug( const TText* aMsg, const TText* aFileName, const TInt aLine, TBool aCalledFromL,

                           const TText8* aFunctionName = NULL );

        /**

        * Destructor.

        */

        inline ~RRubyDebug();

        /**

        * Destructor for Cleanup support. Called when a method leaves.

        */

        inline void Release();

        /**

        * Support for writing traces to file.

        */

        static void PrintToFile( TRefByValue<const TDesC> aFmt, ... );

    private:

        /**

        *  Class for truncating debug messages if they are too long.

        *  @since Series 60 2.8

        */

        class TTruncateOverflow : public TDesOverflow

            {

            public: // Methods from TDesOverflow

                inline void Overflow( TDes& aDes );

            };

    private:

        // A pointer to the debug message

        TPtrC iMsg;

        // A pointer to the filename where RUBY_DEBUG_BLOCK is written

        TPtrC iFileName;

        // Number of the line where RUBY_DEBUG_BLOCK is written

        TInt iLine;

		// ETrue if we are called from RUBY_DEBUG_BLOCKL

        TBool iCalledFromL;

        // Flag that is set when a leave occurs

        TBool iLeave;

	#ifndef RUBY_DISABLE_FUNCTION_NAMES        

        // Used only if aFunctionName is defined in constructor

        HBufC* iFunctionName;

   	#endif  // RUBY_DISABLE_FUNCTION_NAMES

    };

#include "rubydebug.inl"

#endif      // RUBYDEBUG_H

// End of File