User:Ccw: Difference between revisions
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(Proposed solution to issue 4377) |
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=Some class constructors and destructors are too complex= | =Some class constructors and destructors are too complex= | ||
==Proposed solution to [issue http://bugs.mtasa.com/view.php?id=4377]== | |||
Move code out of constructors and destructors into functions that are called post-construction and pre-destruction respectively. | |||
==Example of solution when applied to CClientEntity and CClientColModel:== | ==Example of solution when applied to CClientEntity and CClientColModel:== | ||
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{ | { | ||
protected: | protected: | ||
CClientEntity ( | CClientEntity ( void ) {} | ||
~CClientEntity ( void ) {} | |||
void PostConstruct ( ElementID ID ); | |||
virtual void PreDestroy ( void ); | virtual void PreDestroy ( void ); | ||
public: | public: | ||
| Line 40: | Line 41: | ||
void CClientEntity::PostConstruct () | void CClientEntity::PostConstruct ( ElementID ID ) | ||
{ | { | ||
// Code from CClientEntity constructor moved here | // Code from CClientEntity constructor moved here | ||
| Line 64: | Line 65: | ||
class CClientColModel: public CClientEntity | class CClientColModel: public CClientEntity | ||
{ | { | ||
protected: | |||
CClientColModel ( | CClientColModel ( void ) {} | ||
~CClientColModel ( void ) | ~CClientColModel ( void ) {} | ||
void PostConstruct ( class CClientManager* pManager, ElementID ID ); | |||
virtual void PreDestroy ( void ); | virtual void PreDestroy ( void ); | ||
public: | public: | ||
| Line 74: | Line 75: | ||
void CClientColModel::PostConstruct () | void CClientColModel::PostConstruct ( CClientStreamer * pStreamer, ElementID ID ) | ||
{ | { | ||
CClientEntity::PostConstruct ( ID ); | |||
// Code from CClientColModel constructor moved here | // Code from CClientColModel constructor moved here | ||
} | } | ||
| Line 89: | Line 90: | ||
{ | { | ||
CClientColModel* pElement = new CClientColModel ( pStreamer, ID ); | CClientColModel* pElement = new CClientColModel ( pStreamer, ID ); | ||
pElement->PostConstruct () | pElement->PostConstruct ( pStreamer, ID ) | ||
return pElement; | return pElement; | ||
} | } | ||
| Line 102: | Line 103: | ||
delete pElement; | delete pElement; | ||
</syntaxhighlight> | </syntaxhighlight> | ||
should be replaced with | |||
<syntaxhighlight lang="lua"> | <syntaxhighlight lang="lua"> | ||
CClientColModel::NewCClientColModel ( pStreamer, ID ); | CClientColModel::NewCClientColModel ( pStreamer, ID ); | ||
pElement->Delete (); | pElement->Delete (); | ||
</syntaxhighlight> | </syntaxhighlight> | ||
Revision as of 14:59, 1 June 2009
Some class constructors and destructors are too complex
Proposed solution to [issue http://bugs.mtasa.com/view.php?id=4377]
Move code out of constructors and destructors into functions that are called post-construction and pre-destruction respectively.
Example of solution when applied to CClientEntity and CClientColModel:
Current base and concrete class declaration:
class CClientEntity
{
public:
CClientEntity ( ElementID ID );
virtual ~CClientEntity ( void );
...
class CClientColModel: public CClientEntity
{
public:
CClientColModel ( class CClientManager* pManager, ElementID ID );
~CClientColModel ( void );
...
Proposed base class declaration and definition:
class CClientEntity
{
protected:
CClientEntity ( void ) {}
~CClientEntity ( void ) {}
void PostConstruct ( ElementID ID );
virtual void PreDestroy ( void );
public:
void Delete ( void );
...
void CClientEntity::PostConstruct ( ElementID ID )
{
// Code from CClientEntity constructor moved here
}
void CClientEntity::PreDestroy ()
{
// Code from CClientEntity destructor moved here
}
void CClientEntity::Delete ( void )
{
PreDestroy ();
delete this;
}
Proposed concrete class declaration and definition:
class CClientColModel: public CClientEntity
{
protected:
CClientColModel ( void ) {}
~CClientColModel ( void ) {}
void PostConstruct ( class CClientManager* pManager, ElementID ID );
virtual void PreDestroy ( void );
public:
static CClientColModel* NewCClientColModel ( CClientStreamer * pStreamer, ElementID ID );
...
void CClientColModel::PostConstruct ( CClientStreamer * pStreamer, ElementID ID )
{
CClientEntity::PostConstruct ( ID );
// Code from CClientColModel constructor moved here
}
void CClientColModel::PreDestroy ()
{
// Code from CClientColModel destructor moved here
__super::PreDestroy ();
}
CClientColModel* CClientColModel::NewCClientColModel ( CClientStreamer * pStreamer, ElementID ID )
{
CClientColModel* pElement = new CClientColModel ( pStreamer, ID );
pElement->PostConstruct ( pStreamer, ID )
return pElement;
}
Other changes required
Any occurrence of
new CClientColModel ( pStreamer, ID ); delete pElement;
should be replaced with
CClientColModel::NewCClientColModel ( pStreamer, ID ); pElement->Delete ();
