1
| | template<class _RT, class _NT=std::string>
class ListSetMgr{
struct _RH {
_NT _NI;
_RT* _RI;
_RH( _RT* res, const _NT& name )
: _NI(name), _RI(res) {}
~_RH() { delete _RI; }
};
std::list<_RH*> _RL;
public:
~ListSetMgr() { Clear(); }
void Clear() {
std::list<_RH*>::iterator it = _RL.begin();
while( it != _RL.end() ) {
delete *it;
++it;
}
_RL.clear();
}
_RT* operator[]( unsigned hdl ) { return reinterpret_cast<_RH*>(hdl)->_RI; }
_RT* Get( unsigned hdl ) {
std::list<_RH*>::iterator it = _RL.begin();
while( it != _RL.end() )
if( reinterpret_cast<_RH*>(hdl) == *it )
return reinterpret_cast<_RH*>(hdl)->_RI;
return 0;
}
unsigned NameToHdl( const _NT& name ) {
std::list<_RH*>::iterator it = _RL.begin();
while( it != _RL.end() ) {
if( (*it)->_NI == name )
return reinterpret_cast<unsigned>(*it);
++it;
}
return 0;
}
_RT* NameToPtr( const _NT& name ) {
if( unsigned h = NameToHdl( name ) )
return operator[]( h );
}
void Delete( unsigned hdl ) { _RL.remove( reinterpret_cast<_RH*>(hdl) ); }
void Delete( const _NT& name ) {
std::list<_RH*>::iterator it = _RL.begin();
while( it != _RL.end() )
if( (*it)->_NI == name )
_RL.erase( it );
}
protected:
unsigned AddNC( _RT* newRes, const _NT& name ) {
_RH* tmp = new _RH( newRes, name );
_RL.push_back( tmp );
return reinterpret_cast<unsigned>(tmp);
}
unsigned Add( _RT* newRes, const _NT& name ) {
if( unsigned h = NameToHdl( name ) ) {
delete newRes;
return h;
}
return AddNC( newRes, name );
}
}; |
