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TDereferencer Class Reference

class TDereferencer

This class is useful when you want to dereference character data This class check for buffer overflow This is much faster than stream classes provided by symbian During the ETM traces we found that those classes are 3 FPS less than these utility classes This class won't be checking for data alignment.

Public Member Functions
	TDereferencer ( TUint8 *, TInt )
	TDereferencer (const TDesC8 &)
TInt16	DerefInt16L ( TInt )
TInt32	DerefInt32L ( TInt )
TUint8 *	DerefInt8ArrayL ( TInt , TInt )
TInt8	DerefInt8L ( TInt )
TReal32	DerefReal32L ( TInt )
TReal64	DerefReal64L ( TInt )
TInt	GetLength ()
TPtr8	GetPtr ()
TInt	GetReadingPos ()
void	IsSafeL ( TInt , TInt )
void	SkipL ( TInt )
	operator TInt16 ()
	operator TInt32 ()
	operator TInt8 ()
	operator TReal32 ()
	operator TReal64 ()

Private Member Functions
void	CheckOutOfBoundL ( TInt )

Private Attributes
TInt	iDataLength
TUint8 *	iReadStream
TInt	iTotalRead

Constructor & Destructor Documentation

TDereferencer(TUint8 *, TInt)

TDereferencer	(	TUint8 *	aBuf,
		TInt	aLength
	)	[inline]

Parameters

TUint8 * aBuf
TInt aLength

TDereferencer(const TDesC8 &)

TDereferencer

(

const TDesC8 &

aBuf

)

[inline]

Parameters

const TDesC8 & aBuf

Member Functions Documentation

CheckOutOfBoundL(TInt)

void

CheckOutOfBoundL

(

TInt

aLength

)

[private, inline]

Parameters

TInt aLength

DerefInt16L(TInt)

TInt16

DerefInt16L

(

TInt

aAt = 0

)

[inline]

Parameters

TInt aAt = 0

DerefInt32L(TInt)

TInt32

DerefInt32L

(

TInt

aAt = 0

)

[inline]

Parameters

TInt aAt = 0

DerefInt8ArrayL(TInt, TInt)

TUint8 *	DerefInt8ArrayL	(	TInt	aLength,
			TInt	aAt = 0
		)	[inline]

Parameters

TInt aLength
TInt aAt = 0

DerefInt8L(TInt)

TInt8

DerefInt8L

(

TInt

aAt = 0

)

[inline]

Parameters

TInt aAt = 0

DerefReal32L(TInt)

TReal32

DerefReal32L

(

TInt

aAt = 0

)

[inline]

Parameters

TInt aAt = 0

DerefReal64L(TInt)

TReal64

DerefReal64L

(

TInt

aAt = 0

)

[inline]

Parameters

TInt aAt = 0

GetLength()

TInt

GetLength

(

)

[inline]

Retrieves the silze of the buffer

GetPtr()

TPtr8

GetPtr

(

)

[inline]

Retrieves the ptr to the data stream

GetReadingPos()

TInt

GetReadingPos

(

)

[inline]

Returns current reading position

IsSafeL(TInt, TInt)

void	IsSafeL	(	TInt	aLength,
			TInt	aAt = 0
		)	[inline]

Parameters

TInt aLength
TInt aAt = 0

SkipL(TInt)

void

SkipL

(

TInt

aLength

)

[inline]

Parameters

TInt aLength

operator TInt16()

operator TInt16

(

)

[inline]

operator TInt32()

operator TInt32

(

)

[inline]

operator TInt8()

operator TInt8

(

)

[inline]

operator TReal32()

operator TReal32

(

)

[inline]

operator TReal64()

operator TReal64

(

)

[inline]

Member Data Documentation

TInt iDataLength

TInt

iDataLength

[private]

TUint8 * iReadStream

TUint8 *

iReadStream

[private]

TInt iTotalRead

TInt

iTotalRead

[private]