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Public API Reference

csBitArrayTweakable< InlinedBits, Allocator > Class Template Reference

A one-dimensional array of bits, similar to STL bitset. More...

#include <csutil/bitarray.h>

Inheritance diagram for csBitArrayTweakable< InlinedBits, Allocator >:

Inheritance graph
[legend]

List of all members.

Public Types

typedef Allocator AllocatorType
typedef
csBitArrayTweakable
< InlinedBits,
Allocator > 
ThisType

Public Member Functions

bool AllBitsFalse () const
 Returns true if all bits are false.
bool AreSomeBitsSet (size_t pos, size_t count) const
 Checks whether at least one of count bits is set starting at pos.
void Clear ()
 Set all bits to false.
void ClearBit (size_t pos)
 Set the bit at position pos to false.
 csBitArrayTweakable (const csBitArrayTweakable &that)
 Construct as duplicate of that (copy constructor).
 csBitArrayTweakable (size_t size)
 Construct with a size of size bits.
 csBitArrayTweakable ()
 Default constructor.
void Delete (size_t pos, size_t count)
 Delete from the array count bits starting at pos, making the array shorter.
csBitArrayTweakableFlipAllBits ()
 Change value of all bits.
void FlipBit (size_t pos)
 Toggle the bit at position pos.
csBitArrayStorageTypeGetArrayBits ()
 Return the full backing-store.
size_t GetSize () const
 Return the number of stored bits.
bool IsBitSet (size_t pos) const
 Returns true if the bit at position pos is true.
size_t Length () const
 Return the number of stored bits.
size_t NumBitsSet () const
 Count the number of bits that are set.
csBitArrayTweakableoperator &= (const csBitArrayTweakable &that)
 Bit-wise `and'. The arrays must be the same length.
bool operator!= (const csBitArrayTweakable &that) const
 Not equal to other array?
csBitArrayTweakableoperator= (const csBitArrayTweakable &that)
 Copy from other array.
bool operator== (const csBitArrayTweakable &that) const
 Equal to other array?
bool operator[] (size_t pos) const
 Return bit at position pos.
BitProxy operator[] (size_t pos)
 Return bit at position pos.
csBitArrayTweakable operator^= (const csBitArrayTweakable &that)
 Bit-wise `xor'. The arrays must be the same length.
csBitArrayTweakable operator|= (const csBitArrayTweakable &that)
 Bit-wise `or'. The arrays must be the same length.
csBitArrayTweakable operator~ () const
 Return complement bit array in which all bits are flipped from this one.
void Set (size_t pos, bool val=true)
 Set the bit at position pos to the given value.
void SetBit (size_t pos)
 Set the bit at position pos to true.
void SetLength (size_t newSize)
 Set the number of stored bits.
void SetSize (size_t newSize)
 Set the number of stored bits.
csBitArrayTweakable Slice (size_t pos, size_t count) const
 Return a new bit array containing a slice count bits in length from this array starting at pos.
 ~csBitArrayTweakable ()
 Destructor.

Friends

class BitProxy
class csComparatorBitArray
class csHashComputerBitArray
csBitArrayTweakable operator & (const csBitArrayTweakable &a1, const csBitArrayTweakable &a2)
 Bit-wise `and'. The arrays must be the same length.
csBitArrayTweakable operator^ (const csBitArrayTweakable &a1, const csBitArrayTweakable &a2)
 Bit-wise `xor'. The arrays must be the same length.
csBitArrayTweakable operator| (const csBitArrayTweakable &a1, const csBitArrayTweakable &a2)
 Bit-wise `or'. The arrays must be the same length.

Classes

class  BitProxy


Detailed Description

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
class csBitArrayTweakable< InlinedBits, Allocator >

A one-dimensional array of bits, similar to STL bitset.

The amount of bits is dynamic at runtime.

Internally, bits are stored in multiple values of the type csBitArrayStorageType. If the number of bits is below a certain threshold, the bits are stored in a field inside the class for more performance, above that threshold, the data is stored on the heap.

This threshold can be tweaked by changing the InlinedBits template parameter. At least InlinedBits bits will be stored inlined in the class (the actual amount is the next bigger multiple of the number of bits fitting into one csBitArrayStorageType). In scenarios where you can anticipate that the common number of stored bits is larger than the default number, you can tweak InlinedBits to gain more performance.

The Allocator template allocator allows you to override the logic to allocate bits from the heap.

Definition at line 128 of file bitarray.h.


Constructor & Destructor Documentation

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
csBitArrayTweakable< InlinedBits, Allocator >::csBitArrayTweakable (  )  [inline]

Default constructor.

Definition at line 255 of file bitarray.h.

Referenced by csBitArrayTweakable< >::operator~().

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
csBitArrayTweakable< InlinedBits, Allocator >::csBitArrayTweakable ( size_t  size  )  [inline, explicit]

Construct with a size of size bits.

Definition at line 263 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
csBitArrayTweakable< InlinedBits, Allocator >::csBitArrayTweakable ( const csBitArrayTweakable< InlinedBits, Allocator > &  that  )  [inline]

Construct as duplicate of that (copy constructor).

Definition at line 271 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
csBitArrayTweakable< InlinedBits, Allocator >::~csBitArrayTweakable (  )  [inline]

Destructor.

Definition at line 277 of file bitarray.h.


Member Function Documentation

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
bool csBitArrayTweakable< InlinedBits, Allocator >::AllBitsFalse (  )  const [inline]

Returns true if all bits are false.

Definition at line 538 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
bool csBitArrayTweakable< InlinedBits, Allocator >::AreSomeBitsSet ( size_t  pos,
size_t  count 
) const [inline]

Checks whether at least one of count bits is set starting at pos.

Definition at line 517 of file bitarray.h.

Referenced by csFixedSizeAllocator< sizeof(T), Allocator >::Compact().

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
void csBitArrayTweakable< InlinedBits, Allocator >::Clear (  )  [inline]

Set all bits to false.

Definition at line 473 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
void csBitArrayTweakable< InlinedBits, Allocator >::ClearBit ( size_t  pos  )  [inline]

Set the bit at position pos to false.

Definition at line 486 of file bitarray.h.

Referenced by csBitArrayTweakable< >::Set().

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
void csBitArrayTweakable< InlinedBits, Allocator >::Delete ( size_t  pos,
size_t  count 
) [inline]

Delete from the array count bits starting at pos, making the array shorter.

Definition at line 585 of file bitarray.h.

Referenced by csFixedSizeAllocator< sizeof(T), Allocator >::Compact().

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
csBitArrayTweakable& csBitArrayTweakable< InlinedBits, Allocator >::FlipAllBits (  )  [inline]

Change value of all bits.

Definition at line 548 of file bitarray.h.

Referenced by csFixedSizeAllocator< sizeof(T), Allocator >::GetAllocationMap().

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
void csBitArrayTweakable< InlinedBits, Allocator >::FlipBit ( size_t  pos  )  [inline]

Toggle the bit at position pos.

Definition at line 493 of file bitarray.h.

Referenced by csBitArrayTweakable< InlinedBits, Allocator >::BitProxy::Flip().

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
csBitArrayStorageType* csBitArrayTweakable< InlinedBits, Allocator >::GetArrayBits (  )  [inline]

Return the full backing-store.

Definition at line 614 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
size_t csBitArrayTweakable< InlinedBits, Allocator >::GetSize (  )  const [inline]

Return the number of stored bits.

Definition at line 284 of file bitarray.h.

Referenced by csBitArrayTweakable< >::Length().

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
bool csBitArrayTweakable< InlinedBits, Allocator >::IsBitSet ( size_t  pos  )  const [inline]

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
size_t csBitArrayTweakable< InlinedBits, Allocator >::Length (  )  const [inline]

Return the number of stored bits.

Deprecated:
Use GetSize() instead.

Definition at line 294 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
size_t csBitArrayTweakable< InlinedBits, Allocator >::NumBitsSet (  )  const [inline]

Count the number of bits that are set.

Definition at line 558 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
csBitArrayTweakable& csBitArrayTweakable< InlinedBits, Allocator >::operator &= ( const csBitArrayTweakable< InlinedBits, Allocator > &  that  )  [inline]

Bit-wise `and'. The arrays must be the same length.

Definition at line 409 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
bool csBitArrayTweakable< InlinedBits, Allocator >::operator!= ( const csBitArrayTweakable< InlinedBits, Allocator > &  that  )  const [inline]

Not equal to other array?

Definition at line 403 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
csBitArrayTweakable& csBitArrayTweakable< InlinedBits, Allocator >::operator= ( const csBitArrayTweakable< InlinedBits, Allocator > &  that  )  [inline]

Copy from other array.

Definition at line 364 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
bool csBitArrayTweakable< InlinedBits, Allocator >::operator== ( const csBitArrayTweakable< InlinedBits, Allocator > &  that  )  const [inline]

Equal to other array?

Definition at line 389 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
bool csBitArrayTweakable< InlinedBits, Allocator >::operator[] ( size_t  pos  )  const [inline]

Return bit at position pos.

Definition at line 383 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
BitProxy csBitArrayTweakable< InlinedBits, Allocator >::operator[] ( size_t  pos  )  [inline]

Return bit at position pos.

Definition at line 376 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
csBitArrayTweakable csBitArrayTweakable< InlinedBits, Allocator >::operator^= ( const csBitArrayTweakable< InlinedBits, Allocator > &  that  )  [inline]

Bit-wise `xor'. The arrays must be the same length.

Definition at line 431 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
csBitArrayTweakable csBitArrayTweakable< InlinedBits, Allocator >::operator|= ( const csBitArrayTweakable< InlinedBits, Allocator > &  that  )  [inline]

Bit-wise `or'. The arrays must be the same length.

Definition at line 420 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
csBitArrayTweakable csBitArrayTweakable< InlinedBits, Allocator >::operator~ (  )  const [inline]

Return complement bit array in which all bits are flipped from this one.

Definition at line 442 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
void csBitArrayTweakable< InlinedBits, Allocator >::Set ( size_t  pos,
bool  val = true 
) [inline]

Set the bit at position pos to the given value.

Definition at line 500 of file bitarray.h.

Referenced by csBitArrayTweakable< >::Delete(), and csBitArrayTweakable< InlinedBits, Allocator >::BitProxy::operator=().

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
void csBitArrayTweakable< InlinedBits, Allocator >::SetBit ( size_t  pos  )  [inline]

Set the bit at position pos to true.

Definition at line 479 of file bitarray.h.

Referenced by csBitArrayTweakable< >::Set(), and csBitArrayTweakable< >::Slice().

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
void csBitArrayTweakable< InlinedBits, Allocator >::SetLength ( size_t  newSize  )  [inline]

Set the number of stored bits.

Deprecated:
Use SetSize() instead.

Definition at line 304 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
void csBitArrayTweakable< InlinedBits, Allocator >::SetSize ( size_t  newSize  )  [inline]

Set the number of stored bits.

Remarks:
If the new size is larger than the old size, the newly added bits are cleared.

Definition at line 314 of file bitarray.h.

Referenced by csBitArrayTweakable< >::csBitArrayTweakable(), csBitArrayTweakable< >::Delete(), csBitArrayTweakable< >::operator=(), and csBitArrayTweakable< >::SetLength().

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
csBitArrayTweakable csBitArrayTweakable< InlinedBits, Allocator >::Slice ( size_t  pos,
size_t  count 
) const [inline]

Return a new bit array containing a slice count bits in length from this array starting at pos.

Does not modify this array.

Definition at line 603 of file bitarray.h.


Friends And Related Function Documentation

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
csBitArrayTweakable operator & ( const csBitArrayTweakable< InlinedBits, Allocator > &  a1,
const csBitArrayTweakable< InlinedBits, Allocator > &  a2 
) [friend]

Bit-wise `and'. The arrays must be the same length.

Definition at line 448 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
csBitArrayTweakable operator^ ( const csBitArrayTweakable< InlinedBits, Allocator > &  a1,
const csBitArrayTweakable< InlinedBits, Allocator > &  a2 
) [friend]

Bit-wise `xor'. The arrays must be the same length.

Definition at line 462 of file bitarray.h.

template<int InlinedBits = csBitArrayDefaultInlineBits, typename Allocator = CS::Memory::AllocatorMalloc>
csBitArrayTweakable operator| ( const csBitArrayTweakable< InlinedBits, Allocator > &  a1,
const csBitArrayTweakable< InlinedBits, Allocator > &  a2 
) [friend]

Bit-wise `or'. The arrays must be the same length.

Definition at line 455 of file bitarray.h.


The documentation for this class was generated from the following file:
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