This template class maps the PAbstractArray to a specific element type. More...

#include <array.h>

Inheritance diagram for PBaseArray< T >:

Collaboration diagram for PBaseArray< T >:

Public Member Functions
Construction
	PBaseArray (PINDEX initialSize=0)
	Construct a new dynamic array of elements of the specified type. More...

	PBaseArray (T const *buffer, PINDEX length, PBoolean dynamic=true)
	Construct a new dynamic array of elements of the specified type. More...

Overrides from class PObject
virtual PObject *	Clone () const
	Clone the object. More...

Overrides from class PContainer
PBoolean	SetAt (PINDEX index, T val)
	Set the specific element in the array. More...

T	GetAt (PINDEX index) const
	Get a value from the array. More...

void	Attach (const T *buffer, PINDEX bufferSize)
	Attach a pointer to a static block to the base array type. More...

T *	GetPointer (PINDEX minSize=0)
	Get a pointer to the internal array and assure that it is of at least the specified size. More...

New functions for class
T	operator[] (PINDEX index) const
	Get a value from the array. More...

T &	operator[] (PINDEX index)
	Get a reference to value from the array. More...

	operator T const * () const
	Get a pointer to the internal array. More...

PBoolean	Concatenate (const PBaseArray &array)
	Concatenate one array to the end of this array. More...

Public Member Functions inherited from PAbstractArray
	PAbstractArray (PINDEX elementSizeInBytes, PINDEX initialSize=0)
	Create a new dynamic array of `initalSize` elements of `elementSizeInBytes` bytes each. More...

	PAbstractArray (PINDEX elementSizeInBytes, const void *buffer, PINDEX bufferSizeInElements, PBoolean dynamicAllocation)
	Create a new dynamic array of `bufferSizeInElements` elements of `elementSizeInBytes` bytes each. More...

virtual void	PrintOn (ostream &strm) const
	Output the contents of the object to the stream. More...

virtual void	ReadFrom (istream &strm)
	Input the contents of the object from the stream. More...

virtual Comparison	Compare (const PObject &obj) const
	Get the relative rank of the two arrays. More...

virtual PBoolean	SetSize (PINDEX newSize)
	Set the size of the array in elements. More...

void	Attach (const void *buffer, PINDEX bufferSize)
	Attach a pointer to a static block to the base array type. More...

void *	GetPointer (PINDEX minSize=1)
	Get a pointer to the internal array and assure that it is of at least the specified size. More...

const void *	GetPointer () const

virtual PINDEX	GetLength () const
	Retrun the length in bytes for the array. More...

PBoolean	Concatenate (const PAbstractArray &array)
	Concatenate one array to the end of this array. More...

Public Member Functions inherited from PContainer
	PContainer (PINDEX initialSize=0)
	Create a new unique container. More...

	PContainer (const PContainer &cont)
	Create a new refernce to container. More...

PContainer &	operator= (const PContainer &cont)
	Assign one container reference to another. More...

virtual	~PContainer ()
	Destroy the container class. More...

virtual PINDEX	GetSize () const
	Get the current size of the container. More...

__inline size_t	size () const

PBoolean	SetMinSize (PINDEX minSize)
	Set the minimum size of container. More...

virtual PBoolean	IsEmpty () const
	Determine if the container is empty. More...

__inline bool	empty () const

PBoolean	IsUnique () const
	Determine if container is unique reference. More...

virtual PBoolean	MakeUnique ()
	Make this instance to be the one and only reference to the container contents. More...

Public Member Functions inherited from PObject
__inline unsigned	GetTraceContextIdentifier () const
	Get PTRACE context identifier. More...

__inline void	SetTraceContextIdentifier (unsigned id)

__inline void	SetTraceContextIdentifier (const PObject &obj)

__inline void	SetTraceContextIdentifier (const PObject *obj)

__inline void	CopyTraceContextIdentifier (PObject &obj) const

__inline void	CopyTraceContextIdentifier (PObject *obj) const

virtual	~PObject ()

__inline const char *	GetClass () const

__inline bool	IsClass (const char *name) const

__inline const PObject *	PTraceObjectInstance () const

template<class CLS >
CLS *	CloneAs () const
	As for Clone() but converts to specified type. More...

virtual PINDEX	HashFunction () const
	This function yields a hash value required by the `PDictionary` class. More...

virtual Comparison	CompareObjectMemoryDirect (const PObject &obj) const
	Determine the byte wise comparison of two objects. More...

bool	operator== (const PObject &obj) const
	Compare the two objects. More...

bool	operator!= (const PObject &obj) const
	Compare the two objects. More...

bool	operator< (const PObject &obj) const
	Compare the two objects. More...

bool	operator> (const PObject &obj) const
	Compare the two objects. More...

bool	operator<= (const PObject &obj) const
	Compare the two objects. More...

bool	operator>= (const PObject &obj) const
	Compare the two objects. More...

Protected Member Functions
virtual void	PrintElementOn (ostream &stream, PINDEX index) const

	PBaseArray (PContainerReference &reference_)

Protected Member Functions inherited from PAbstractArray
PBoolean	InternalSetSize (PINDEX newSize, PBoolean force)

virtual void	ReadElementFrom (istream &stream, PINDEX index)

	PAbstractArray (PContainerReference &reference, PINDEX elementSizeInBytes)

Protected Member Functions inherited from PContainer
	PContainer (int dummy, const PContainer *cont)
	Constructor used in support of the Clone() function. More...

	PContainer (PContainerReference &reference)
	Construct using static PContainerReference. More...

virtual void	DestroyContents ()=0
	Destroy the container contents. More...

virtual void	AssignContents (const PContainer &c)
	Copy the container contents. More...

void	CopyContents (const PContainer &c)
	Copy the container contents. More...

void	CloneContents (const PContainer *src)
	Create a duplicate of the container contents. More...

void	Destruct ()
	Internal function called from container destructors. More...

virtual void	DestroyReference ()
	Destroy the PContainerReference instance. More...

Protected Member Functions inherited from PObject
	PObject ()
	Constructor for PObject, made protected so cannot ever create one on its own. More...

Additional Inherited Members
Public Types inherited from PObject
enum	Comparison { LessThan = -1, EqualTo = 0, GreaterThan = 1 }
	Result of the comparison operation performed by the `Compare()` function. More...

Static Public Member Functions inherited from PObject
static __inline void	CopyTraceContextIdentifier (PObject &to, const PObject &from)

static __inline void	CopyTraceContextIdentifier (PObject &to, const PObject *from)

static __inline void	CopyTraceContextIdentifier (PObject *to, const PObject &from)

static __inline void	CopyTraceContextIdentifier (PObject to, const PObject from)

static __inline const char *	Class ()

static __inline const PObject *	PTraceObjectInstance (const char *)

static __inline const PObject *	PTraceObjectInstance (const PObject *obj)

template<typename T >
static Comparison	Compare2 (T v1, T v2)
	Compare two types, returning Comparison type. More...

static Comparison	InternalCompareObjectMemoryDirect (const PObject obj1, const PObject obj2, PINDEX size)
	Internal function caled from CompareObjectMemoryDirect() More...

Protected Attributes inherited from PAbstractArray
PINDEX	elementSize
	Size of an element in bytes. More...

char *	theArray
	Pointer to the allocated block of memory. More...

PBoolean	allocatedDynamically
	Flag indicating the array was allocated on the heap. More...

Protected Attributes inherited from PContainer
PContainerReference *	reference

Protected Attributes inherited from PObject
unsigned	m_traceContextIdentifier

Detailed Description

template<class T>
class PBaseArray< T >

This template class maps the PAbstractArray to a specific element type.

The functions in this class primarily do all the appropriate casting of types.

Note that if templates are not used the PBASEARRAY macro will simulate the template instantiation.

The following classes are instantiated automatically for the basic scalar types:

PCharArray
PBYTEArray
PShortArray
PWORDArray
PIntArray
PUnsignedArray
PLongArray
PDWORDArray

Constructor & Destructor Documentation

template<class T>

PBaseArray< T >::PBaseArray ( PINDEX initialSize = 0 )

inline

Construct a new dynamic array of elements of the specified type.

The array is initialised to all zero bytes. Note that this may not be logically equivalent to the zero value for the type, though this would be very rare.

Parameters

initialSize Initial number of elements in the array.

template<class T>

PBaseArray< T >::PBaseArray	(	T const *	buffer,
		PINDEX	length,
		PBoolean	dynamic = `true`
	)

inline

Construct a new dynamic array of elements of the specified type.

Parameters

buffer	Pointer to an array of the elements of type T.
length	Number of elements pointed to by `buffer`.
dynamic	Buffer is copied and dynamically allocated.

template<class T>

PBaseArray< T >::PBaseArray ( PContainerReference & reference_ )

inlineprotected

Member Function Documentation

template<class T>

void PBaseArray< T >::Attach	(	const T *	buffer,
		PINDEX	bufferSize
	)

inline

Attach a pointer to a static block to the base array type.

The pointer is used directly and will not be copied to a dynamically allocated buffer. If the SetSize() function is used to change the size of the buffer, the object will be converted to a dynamic form with the contents of the static buffer copied to the allocated buffer.

Any dynamically allocated buffer will be freed.

Parameters

buffer	Pointer to an array of elements.
bufferSize	Number of elements pointed to by buffer.

template<class T>

virtual PObject* PBaseArray< T >::Clone ( ) const

inlinevirtual

Clone the object.

Reimplemented from PObject.

Reimplemented in PCaselessString, PBitArray, PBYTEArray, PCharArray, PString, and PHashTableInfo.

template<class T>

PBoolean PBaseArray< T >::Concatenate ( const PBaseArray< T > & array )

inline

Concatenate one array to the end of this array.

This function will allocate a new array large enough for the existing contents and the contents of the parameter. The paramters contents is then copied to the end of the existing array.

Note this does nothing and returns false if the target array is not dynamically allocated.

Returns: true if the memory allocation succeeded.

Parameters

array Other array to concatenate

template<class T>

T PBaseArray< T >::GetAt ( PINDEX index ) const

inline

Get a value from the array.

If the index is beyond the end of the allocated array then a zero value is returned.

Returns: Value at the array position.

Parameters

index Position on the array to get value from.

Referenced by PBaseArray< PHashTableList >::operator[](), and PBaseArray< PHashTableList >::PrintElementOn().

template<class T>

T* PBaseArray< T >::GetPointer ( PINDEX minSize = 0 )

inline

Get a pointer to the internal array and assure that it is of at least the specified size.

This is useful when the array contents are being set by some external or system function eg file read.

It is unsafe to assume that the pointer is valid for very long after return from this function. The array may be resized or otherwise changed and the pointer returned invalidated. It should be used for simple calls to atomic functions, or very careful examination of the program logic must be performed.

Returns: Pointer to the array memory.

Parameters

minSize Minimum size for returned buffer pointer.

Referenced by P_WXWINDOWS_DEVICE_CLASS::FrameComplete().

template<class T>

PBaseArray< T >::operator T const * ( ) const

inline

Get a pointer to the internal array.

The user may not modify the contents of this pointer. This is useful when the array contents are required by some external or system function eg file write.

It is unsafe to assume that the pointer is valid for very long after return from this function. The array may be resized or otherwise changed and the pointer returned invalidated. It should be used for simple calls to atomic functions, or very careful examination of the program logic must be performed.

Returns: Constant pointer to the array memory.

template<class T>

T PBaseArray< T >::operator[] ( PINDEX index ) const

inline

Get a value from the array.

If the index is beyond the end of the allocated array then a zero value is returned.

This is functionally identical to the PContainer::GetAt() function.

Returns: Value at the array position.

Parameters

index Position on the array to get value from.

template<class T>

T& PBaseArray< T >::operator[] ( PINDEX index )

inline

Get a reference to value from the array.

If index is beyond the end of the allocated array then the array is expanded. If a memory allocation failure occurs the function asserts.

This is functionally similar to the SetAt() function and allows the array subscript to be an lvalue.

Returns: Reference to value at the array position.

Parameters

index Position on the array to get value from.

template<class T>

virtual void PBaseArray< T >::PrintElementOn	(	ostream &	stream,
		PINDEX	index
	)		const

inlineprotectedvirtual

Reimplemented from PAbstractArray.

template<class T>

PBoolean PBaseArray< T >::SetAt	(	PINDEX	index,
		T	val
	)

inline

Set the specific element in the array.

The array will automatically expand, if necessary, to fit the new element in.

Returns: true if new memory for the array was successfully allocated.

Parameters

index	Position in the array to set the new value.
val	Value to set in the array.

Referenced by PScalarArray< DWORD >::ReadElementFrom().

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

array.h

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

template<class T> class PBaseArray< T >

Constructor & Destructor Documentation

Member Function Documentation

template<class T>
class PBaseArray< T >