Collapse all Symbian^3 Application Developer Library

ContentAccess::CBitset Class Reference

class ContentAccess::CBitset : public CBase

A container of bits.

The bits may be retrieved, set, and unset.

Inherits from

ContentAccess::CBitset
- CBase

Public Member Functions
	~CBitset ()
IMPORT_C void	ExternalizeL ( RWriteStream &)
IMPORT_C void	InternalizeL ( RReadStream &)
IMPORT_C void	Invert ()
IMPORT_C TBool	IsSet ( TInt )
IMPORT_C TBool	IsSetList ( TInt , ...)
IMPORT_C TInt	MaxBits ()
IMPORT_C CBitset *	NewL ( TInt )
IMPORT_C CBitset *	NewL (const CBitset &)
IMPORT_C CBitset *	NewLC ( TInt )
IMPORT_C CBitset *	NewLC (const CBitset &)
IMPORT_C void	Reset ()
IMPORT_C void	Set ( TInt )
IMPORT_C void	SetAll ()
IMPORT_C void	SetListL ( TInt , ...)
IMPORT_C void	Unset ( TInt )
TBool	operator!= (const CBitset &)
IMPORT_C CBitset &	operator= (const CBitset &)
IMPORT_C TBool	operator== (const CBitset &)

Private Member Functions
	CBitset ()
	CBitset (const CBitset &)
void	ConstructL ( TInt )
void	ConstructL (const CBitset &)
void	IdentifyBit ( TInt , TInt &, TInt &)
TBool	ValidBit ( TInt )

Inherited Functions
	CBase::CBase()
	CBase::Delete(CBase *)
	CBase::Extension_(TUint,TAny &,TAny )
	CBase::operator new(TUint)
	CBase::operator new(TUint,TAny *)
	CBase::operator new(TUint,TLeave)
	CBase::operator new(TUint,TLeave,TUint)
	CBase::operator new(TUint,TUint)
	CBase::~CBase()

Private Attributes
TUint8 *	iBitSet
TInt	iMaxBits
TInt	iWidth

Constructor & Destructor Documentation

CBitset()

CBitset

(

)

[private]

CBitset(const CBitset &)

CBitset

(

const CBitset &

aSource

)

[private]

Parameters

const CBitset & aSource

~CBitset()

~CBitset

(

)

[virtual]

Member Functions Documentation

ConstructL(TInt)

void

ConstructL

(

TInt

aMaxId

)

[private]

Parameters

TInt aMaxId

ConstructL(const CBitset &)

void

ConstructL

(

const CBitset &

aSource

)

[private]

Parameters

const CBitset & aSource

ExternalizeL(RWriteStream &)

IMPORT_C void

ExternalizeL

(

RWriteStream &

aStream

)

const

Externalisation function that allows this object to be marshalled prior to being shipped over a client-server interface by related glue-code.

Parameters

RWriteStream & aStream

On return, the .....

IdentifyBit(TInt, TInt &, TInt &)

void	IdentifyBit	(	TInt	aBitId,
			TInt &	aByte,
			TInt &	aBitInByte
		)	const [private]

Converts from a bit ID to a byte and bit within one of the bit-field sets.

Parameters

TInt aBitId	The bit ID being mapped.
TInt & aByte	Modified to contain the resultant byte number.
TInt & aBitInByte	Modified to contain the resultant bit number within the byte.

InternalizeL(RReadStream &)

IMPORT_C void

InternalizeL

(

RReadStream &

aStream

)

Internalisation function that allows this object to to be unmarshalled after transfer across a client-server interface.

Parameters

RReadStream & aStream

On return, the .....

Invert()

IMPORT_C void

Invert

(

)

Inverts all bits in the set.

IsSet(TInt)

IMPORT_C TBool

IsSet

(

TInt

aBit

)

const

Queries the single bit of the set.

panic: CafUtils 0 if aBit is out of range

Parameters

TInt aBit

The bit that requires testing.

IsSetList(TInt, ...)

IMPORT_C TBool	IsSetList	(	TInt	aItems,
			...
		)	const

Allows a caller to query multiple bits in the bitset.

Parameters

TInt aItems	The number of items following in the parameter list.
...

MaxBits()

IMPORT_C TInt

MaxBits

(

)

const

Gets the maximum number of settable/gettable bits.

NewL(TInt)

IMPORT_C CBitset *

NewL

(

TInt

aMaxBits

)

[static]

Constructs a new bitset object with a maximum number of bits.

Parameters

TInt aMaxBits

The maximum number of bits this object may contain.

NewL(const CBitset &)

IMPORT_C CBitset *

NewL

(

const CBitset &

aSource

)

[static]

Copy constructor

Parameters

const CBitset & aSource

The object to be copied from.

NewLC(TInt)

IMPORT_C CBitset *

NewLC

(

TInt

aMaxBits

)

[static]

CBitset::NewL(TInt aMaxBits)

Parameters

TInt aMaxBits

NewLC(const CBitset &)

IMPORT_C CBitset *

NewLC

(

const CBitset &

aSource

)

[static]

CBitset::NewL(const CBitset& aSource)

Parameters

const CBitset & aSource

Reset()

IMPORT_C void

Reset

(

)

Resets the entire bitset to zero.

Set(TInt)

IMPORT_C void

Set

(

TInt

aBit

)

Sets the 'aBit'th bit of the set.

panic: CafUtils 0 if aBit is out of range

Parameters

TInt aBit

the bit to set

SetAll()

IMPORT_C void

SetAll

(

)

Sets all bits in the set to one.

SetListL(TInt, ...)

IMPORT_C void	SetListL	(	TInt	aItems,
			...
		)

Allows a caller to set multiple bits in the bitset by allowing a variable-length parameter list.

Parameters

TInt aItems	The number of items following in the parameter list.
...

Unset(TInt)

IMPORT_C void

Unset

(

TInt

aBit

)

Clears the 'aBit'th bit of the set.

panic: CafUtils 0 if aBit is out of range

Parameters

TInt aBit

the bit to clear

ValidBit(TInt)

TBool

ValidBit

(

TInt

aAttributeId

)

const [private, inline]

Tests whether the bit value is valid for this bitset.

Parameters

TInt aAttributeId

The .....

operator!=(const CBitset &)

TBool

operator!=

(

const CBitset &

aSource

)

const [inline]

Parameters

const CBitset & aSource

operator=(const CBitset &)

IMPORT_C CBitset &

operator=

(

const CBitset &

aSource

)

Assignment of a bitset.

Note that an assignment of a longer bitset to a shorter bitset will result in the shorter bitset being expanded. This function may leave.

Parameters

const CBitset & aSource

The bitset ......

operator==(const CBitset &)

IMPORT_C TBool

operator==

(

const CBitset &

aSource

)

const

Allows comparisons of CBitsets.

Note that it is possible to compare a longer bitset with a shorter one. However, only the relevant (low-order) bits are compared.

Parameters

const CBitset & aSource

The bitset .....

Member Data Documentation

TUint8 * iBitSet

TUint8 *

iBitSet

[private]

The actual set of bits

TInt iMaxBits

TInt

iMaxBits

[private]

The maximum number of bits in this bitset

TInt iWidth

TInt

iWidth

[private]

The number of bytes required to allow for maxbits