dart::common::sub_ptr< T > Class Template Reference

sub_ptr is a pointer to a Subject. More...

#include <sub_ptr.hpp>

Inheritance diagram for dart::common::sub_ptr< T >:

Public Member Functions
	sub_ptr ()
	Default constructor. More...
	sub_ptr (T *_ptr)
	Alternative constructor. More...
sub_ptr &	operator= (const sub_ptr &_sp)
	Change the Subject of this sub_ptr. More...
sub_ptr &	operator= (T *_ptr)
	Change the Subject of this sub_ptr. More...
	operator T* () const
	Implicit conversion to pointer type. More...
T &	operator* () const
	Dereferencing operator. More...
T *	operator-> () const
	Dereferencing operation. More...
T *	get () const
	Get the Subject of this sub_ptr. More...
void	set (T *_ptr)
	Set the subject of this sub_ptr. More...
bool	valid ()
	True if and only if this sub_ptr still points to a valid Subject. More...

Protected Member Functions
void	handleDestructionNotification (const Subject *_subject) override
	Called by receiveDestructionNotification(). More...
void	receiveDestructionNotification (const Subject *_subject)
	Called whenever a Subject is destroyed (or sends out a destruction notification). More...
void	addSubject (const Subject *_subject)
	Add a Subject for this Observer. More...
void	removeSubject (const Subject *_subject)
	Remove a Subject from this Observer. More...
void	removeAllSubjects ()
	Remove all Subjects from this Observer. More...

Protected Attributes
T *	mT
	Store the pointer to the full object. More...
Subject *	mSubjectBase
	Store the pointer to the virtual Subject base. More...
std::set< const Subject * >	mSubjects
	List of current Subjects for this Observer. More...

Detailed Description

template<class T>
class dart::common::sub_ptr< T >

sub_ptr is a pointer to a Subject.

It can be used as a pointer to any class that publicly inherits Subject. If the instance that it is pointing to is ever destroyed, the sub_ptr class will start pointing to a nullptr. You can check the return of sub_ptr::valid() to see if the pointer is still valid.

Constructor & Destructor Documentation

sub_ptr() [1/2]

template<class T >

dart::common::sub_ptr< T >::sub_ptr

Default constructor.

sub_ptr() [2/2]

template<class T >

dart::common::sub_ptr< T >::sub_ptr

(

T *

_ptr

)

Alternative constructor.

_ptr must be a valid pointer when passed to this constructor.

Member Function Documentation

addSubject()

void dart::common::Observer::addSubject ( const Subject *  _subject )

protectedinherited

Add a Subject for this Observer.

get()

template<class T >

T * dart::common::sub_ptr< T >::get

Get the Subject of this sub_ptr.

handleDestructionNotification()

template<class T >

void dart::common::sub_ptr< T >::handleDestructionNotification ( const Subject *  _subject )

overrideprotectedvirtual

Called by receiveDestructionNotification().

Override this function to customize your class's response to destruction notifications.

Reimplemented from dart::common::Observer.

operator T*()

template<class T >

dart::common::sub_ptr< T >::operator T*

Implicit conversion to pointer type.

operator*()

template<class T >

T & dart::common::sub_ptr< T >::operator*

Dereferencing operator.

operator->()

template<class T >

T * dart::common::sub_ptr< T >::operator->

Dereferencing operation.

operator=() [1/2]

template<class T >

sub_ptr< T > & dart::common::sub_ptr< T >::operator=

(

const sub_ptr< T > &

_sp

)

Change the Subject of this sub_ptr.

operator=() [2/2]

template<class T >

sub_ptr< T > & dart::common::sub_ptr< T >::operator=

(

T *

_ptr

)

Change the Subject of this sub_ptr.

receiveDestructionNotification()

void dart::common::Observer::receiveDestructionNotification ( const Subject *  _subject )

protectedinherited

Called whenever a Subject is destroyed (or sends out a destruction notification).

Override handleDestructionNotification() in order to customize your class's response to destruction notifications.

removeAllSubjects()

void dart::common::Observer::removeAllSubjects ( )

protectedinherited

Remove all Subjects from this Observer.

removeSubject()

void dart::common::Observer::removeSubject ( const Subject *  _subject )

protectedinherited

Remove a Subject from this Observer.

set()

template<class T >

void dart::common::sub_ptr< T >::set

(

T *

_ptr

)

Set the subject of this sub_ptr.

valid()

template<class T >

bool dart::common::sub_ptr< T >::valid

True if and only if this sub_ptr still points to a valid Subject.

Member Data Documentation

mSubjectBase

template<class T >

Subject* dart::common::sub_ptr< T >::mSubjectBase

protected

Store the pointer to the virtual Subject base.

mSubjects

std::set<const Subject*> dart::common::Observer::mSubjects

protectedinherited

List of current Subjects for this Observer.

mT

template<class T >

T* dart::common::sub_ptr< T >::mT

protected

Store the pointer to the full object.