A memory-efficient bit mask. More...

#include <BitMask.h>

Classes
struct	Iterator
	The bit mask iterator. More...

Public Member Functions
int32	Num () const
	The current number of meaningful bits in the mask. More...

	FBitMask ()
	Construct a new empty bit mask. More...

	FBitMask (const FBitMask &InBitMask)
	Copy-construct the bit mask. More...

	FBitMask (FBitMask &&InBitMask)
	Move-construct the bit mask. More...

	FBitMask (const int32 Capacity)
	Initialize a new instance of a mask with bit capacity. More...

bool	At (const int32 Index) const
	Get the bit flag at the specified index. More...

bool	operator[] (const int32 Index) const
	Get a bit element by its index. More...

void	SetAt (const int32 Index, const bool Value)
	Set a bit at a specific index. More...

bool	IsNonZero () const
	Check if there are any non-zero bits in the mask. More...

EApparatusStatus	Trim () const
	Trim the meaningless high groups. More...

bool	IsAllZeroes () const
	Check if all of the bits in the mask are zeroes or none. More...

int32	CountNonZeroGroups () const
	Get the number of meaningful (non-zero) bit groups. More...

EApparatusStatus	Set (FBitMask &&InBitMask)
	Move the bit mask to this bit mask. More...

EApparatusStatus	Set (const FBitMask &InBitMask)
	Set this bit mask equal to another bit mask. More...

FBitMask &	operator= (FBitMask &&InBitMask)
	Move the bit mask. More...

FBitMask &	operator= (const FBitMask &InBitMask)
	Set this bit mask equal to another bit mask. More...

int32	DifferencesCount (const FBitMask &BitMask) const
	Get the number of different bits in two masks. More...

int32	InclusionsCount (const FBitMask &BitMask) const
	Get the number of included bits in two masks. More...

bool	Includes (const FBitMask &BitMask) const
	Does the mask has all of the bits set in the supplied mask. More...

bool	IncludesPartially (const FBitMask &BitMask) const
	Check if the mask has any of the bits set in the supplied mask. More...

bool	Contains (const bool bit) const
	Does a bit mask contain the specified bit? More...

Iterator	begin ()

Iterator	end ()

int32	IndexOf (const bool bit) const
	Get the index of the first matching bit in the mask. More...

void	EnsureGroupsNum (int32 InGroupsCount)
	Ensure a bit group count. More...

void	EnsureGroupsForBitAt (const int32 BitIndex)
	Ensure that there is enough bit groups for an index. More...

int32	Max () const
	Get the current maximum number of bits that can be stored without any additional allocations. More...

void	Reserve (const int32 BitCapacity)
	Reserve space for a given number of bits. More...

void	Add (const bool Bit)
	Add a bit to the end of the mask. More...

void	Empty (const int32 Slack=0)
	Empties the array. More...

void	Reset (const int32 NewSize=0)
	Same as empty, but doesn't change memory allocations, unless the new size is larger than the current array. More...

void	SetMasked (const FBitMask &Mask, const bool State)
	Set the bits based on a mask. More...

void	CopyTo (bool *Array, int32 Offset) const
	Copy the bits to an array, with a specified offset. More...

void	Insert (const int32 Index, const bool Bit)
	Insert a bit at the specified index. More...

void	Remove (const bool Bit)
	Remove the first occurrence of the specified bit from the mask. More...

void	RemoveAt (const int32 Index)
	Remove the bit at the specified index. More...

void	Erase (const int32 Index)
	Remove an element at the specified index. More...

void	CopyTo (TArray< bool > &OutArray, const int32 Offset=0)
	Copy to an array with a supplied offset. More...

FBitMask &	AndWith (const FBitMask &InMask)
	And the bitmask with a given mask. More...

FBitMask &	operator&= (const FBitMask &InMask)
	And the bitmask with a given mask. More...

FBitMask &	OrWith (const FBitMask &InMask)
	Or the bitmask with a given mask. More...

FBitMask &	operator\|= (const FBitMask &InMask)
	Or the bitmask with a given mask. More...

FString	ToString () const
	Convert the bit mask to a string representation. More...

uint32	CalcHash () const
	Calculate the bit mask hash. More...

Public Attributes
friend	Iterator

Friends
class	StaticConstructor

uint32	GetTypeHash (const FBitMask &bm)

std::ostream &	operator<< (std::ostream &Str, const FBitMask &v)

bool	operator== (const FBitMask &a, const FBitMask &b)

bool	operator!= (const FBitMask &a, const FBitMask &b)

FBitMask	operator& (const FBitMask &a, const FBitMask &b)

FBitMask	operator\| (const FBitMask &a, const FBitMask &b)

Detailed Description

A memory-efficient bit mask.

Please, not that this is not a bit array and serves different purposes.

Constructor & Destructor Documentation

◆ FBitMask() [1/4]

FBitMask::FBitMask ( )

inline

Construct a new empty bit mask.

◆ FBitMask() [2/4]

FBitMask::FBitMask ( const FBitMask & InBitMask )

inline

Copy-construct the bit mask.

◆ FBitMask() [3/4]

FBitMask::FBitMask ( FBitMask && InBitMask )

inline

Move-construct the bit mask.

◆ FBitMask() [4/4]

FBitMask::FBitMask ( const int32 Capacity )

inline

Initialize a new instance of a mask with bit capacity.

Member Function Documentation

◆ Add()

void FBitMask::Add ( const bool Bit )

Add a bit to the end of the mask.

◆ AndWith()

FBitMask& FBitMask::AndWith ( const FBitMask & InMask )

inline

And the bitmask with a given mask.

◆ At()

bool FBitMask::At ( const int32 Index ) const

inline

Get the bit flag at the specified index.

Parameters

Index The index of the bit to get. If it's out of the number of elements, false is returned.

Returns: The state of the bit at the specified index.

◆ begin()

Iterator FBitMask::begin ( )

inline

◆ CalcHash()

uint32 FBitMask::CalcHash ( ) const

inline

Calculate the bit mask hash.

◆ Contains()

bool FBitMask::Contains ( const bool bit ) const

Does a bit mask contain the specified bit?

◆ CopyTo() [1/2]

void FBitMask::CopyTo	(	bool *	Array,
		int32	Offset
	)		const

inline

Copy the bits to an array, with a specified offset.

◆ CopyTo() [2/2]

void FBitMask::CopyTo	(	TArray< bool > &	OutArray,
		const int32	Offset = `0`
	)

inline

Copy to an array with a supplied offset.

◆ CountNonZeroGroups()

int32 FBitMask::CountNonZeroGroups ( ) const

inline

Get the number of meaningful (non-zero) bit groups.

◆ DifferencesCount()

int32 FBitMask::DifferencesCount ( const FBitMask & BitMask ) const

Get the number of different bits in two masks.

◆ Empty()

void FBitMask::Empty ( const int32 Slack = 0 )

inline

Empties the array.

It calls the destructors on held flags if needed.

Parameters

Slack (Optional) The expected usage size in bits after empty operation. Default is 0.

◆ end()

Iterator FBitMask::end ( )

inline

◆ EnsureGroupsForBitAt()

void FBitMask::EnsureGroupsForBitAt ( const int32 BitIndex )

inline

Ensure that there is enough bit groups for an index.

◆ EnsureGroupsNum()

void FBitMask::EnsureGroupsNum ( int32 InGroupsCount )

inline

Ensure a bit group count.

◆ Erase()

void FBitMask::Erase ( const int32 Index )

inline

Remove an element at the specified index.

Parameters

index An index of the element to erase.

◆ Includes()

bool FBitMask::Includes ( const FBitMask & BitMask ) const

inline

Does the mask has all of the bits set in the supplied mask.

The same as a bitwise A & B == B.

◆ IncludesPartially()

bool FBitMask::IncludesPartially ( const FBitMask & BitMask ) const

inline

Check if the mask has any of the bits set in the supplied mask.

The same as a bitwise A & B != 0.

◆ InclusionsCount()

int32 FBitMask::InclusionsCount ( const FBitMask & BitMask ) const

Get the number of included bits in two masks.

◆ IndexOf()

int32 FBitMask::IndexOf ( const bool bit ) const

Get the index of the first matching bit in the mask.

◆ Insert()

void FBitMask::Insert	(	const int32	Index,
		const bool	Bit
	)

Insert a bit at the specified index.

◆ IsAllZeroes()

bool FBitMask::IsAllZeroes ( ) const

inline

Check if all of the bits in the mask are zeroes or none.

◆ IsNonZero()

bool FBitMask::IsNonZero ( ) const

inline

Check if there are any non-zero bits in the mask.

◆ Max()

int32 FBitMask::Max ( ) const

inline

Get the current maximum number of bits that can be stored without any additional allocations.

◆ Num()

int32 FBitMask::Num ( ) const

inline

The current number of meaningful bits in the mask.

This value doesn't play any role when comparing the masks.

◆ operator&=()

FBitMask& FBitMask::operator&= ( const FBitMask & InMask )

inline

And the bitmask with a given mask.

◆ operator=() [1/2]

FBitMask& FBitMask::operator= ( const FBitMask & InBitMask )

inline

Set this bit mask equal to another bit mask.

◆ operator=() [2/2]

FBitMask& FBitMask::operator= ( FBitMask && InBitMask )

inline

Move the bit mask.

◆ operator[]()

bool FBitMask::operator[] ( const int32 Index ) const

inline

Get a bit element by its index.

◆ operator|=()

FBitMask& FBitMask::operator|= ( const FBitMask & InMask )

inline

Or the bitmask with a given mask.

◆ OrWith()

FBitMask& FBitMask::OrWith ( const FBitMask & InMask )

inline

Or the bitmask with a given mask.

◆ Remove()

void FBitMask::Remove ( const bool Bit )

Remove the first occurrence of the specified bit from the mask.

◆ RemoveAt()

void FBitMask::RemoveAt ( const int32 Index )

Remove the bit at the specified index.

Parameters

Index The index of the bit to remove.

◆ Reserve()

void FBitMask::Reserve ( const int32 BitCapacity )

inline

Reserve space for a given number of bits.

◆ Reset()

void FBitMask::Reset ( const int32 NewSize = 0 )

inline

Same as empty, but doesn't change memory allocations, unless the new size is larger than the current array.

Parameters

NewSize The expected usage size in bits after calling this function.

◆ Set() [1/2]

EApparatusStatus FBitMask::Set ( const FBitMask & InBitMask )

inline

Set this bit mask equal to another bit mask.

◆ Set() [2/2]

EApparatusStatus FBitMask::Set ( FBitMask && InBitMask )

inline

Move the bit mask to this bit mask.

◆ SetAt()

void FBitMask::SetAt	(	const int32	Index,
		const bool	Value
	)

inline

Set a bit at a specific index.

◆ SetMasked()

void FBitMask::SetMasked	(	const FBitMask &	Mask,
		const bool	State
	)

inline

Set the bits based on a mask.

Parameters

Mask	The mask to use.
State	The state to set.

◆ ToString()

FString FBitMask::ToString ( ) const

inline

Convert the bit mask to a string representation.

◆ Trim()

EApparatusStatus FBitMask::Trim ( ) const

inline

Trim the meaningless high groups.

Friends And Related Function Documentation

◆ GetTypeHash

uint32 GetTypeHash ( const FBitMask & bm )

friend

◆ operator!=

bool operator!=	(	const FBitMask &	a,
		const FBitMask &	b
	)

friend

◆ operator&

FBitMask operator&	(	const FBitMask &	a,
		const FBitMask &	b
	)

friend

◆ operator<<

std::ostream& operator<<	(	std::ostream &	Str,
		const FBitMask &	v
	)

friend

◆ operator==

bool operator==	(	const FBitMask &	a,
		const FBitMask &	b
	)

friend

◆ operator|

FBitMask operator\|	(	const FBitMask &	a,
		const FBitMask &	b
	)

friend

◆ StaticConstructor

friend class StaticConstructor

friend

Member Data Documentation

◆ Iterator

friend FBitMask::Iterator

The documentation for this struct was generated from the following files:

D:/ApparatusPlatformer/Plugins/Apparatus/Source/ApparatusRuntime/Public/BitMask.h
D:/ApparatusPlatformer/Plugins/Apparatus/Source/ApparatusRuntime/Private/BitMask.cpp

Classes

Public Member Functions

Public Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ FBitMask() [1/4]

◆ FBitMask() [2/4]

◆ FBitMask() [3/4]

◆ FBitMask() [4/4]

Member Function Documentation

◆ Add()

◆ AndWith()

◆ At()

◆ begin()

◆ CalcHash()

◆ Contains()

◆ CopyTo() [1/2]

◆ CopyTo() [2/2]

◆ CountNonZeroGroups()

◆ DifferencesCount()

◆ Empty()

◆ end()

◆ EnsureGroupsForBitAt()

◆ EnsureGroupsNum()

◆ Erase()

◆ Includes()

◆ IncludesPartially()

◆ InclusionsCount()

◆ IndexOf()

◆ Insert()

◆ IsAllZeroes()

◆ IsNonZero()

◆ Max()

◆ Num()

◆ operator&=()

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ operator[]()

◆ operator|=()

◆ OrWith()

◆ Remove()

◆ RemoveAt()

◆ Reserve()

◆ Reset()

◆ Set() [1/2]

◆ Set() [2/2]

◆ SetAt()

◆ SetMasked()

◆ ToString()

◆ Trim()

Friends And Related Function Documentation

◆ GetTypeHash

◆ operator!=

◆ operator&

◆ operator<<

◆ operator==

◆ operator|

◆ StaticConstructor

Member Data Documentation

◆ Iterator