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IdRegisteredClass.cpp
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IdRegisteredClass.cpp
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#include "IdRegisteredClass.h"
bool isSpecialId(IdType id)
{
return id >= firstSpecialId && id <= invalidId;
}
BadIdException::BadIdException(const char * what)
: std::runtime_error(what)
{
}
/*-------------,
| IdRegister |
`-------------*/
IdRegister::IdRegister(bool freeEverythingAtDestroy)
: nextid(1), freeEverythingAtDestroyVal(freeEverythingAtDestroy)
{
}
IdRegister::~IdRegister()
{
auto ircs = hashmap.values();
if (freeEverythingAtDestroyVal){
for (IdRegisteredClass* irc : ircs)
delete irc;
} else {
for (IdRegisteredClass* irc : ircs)
unregister(irc);
}
}
IdType IdRegister::registerObject(IdRegisteredClass * ptr, IdType wantedId)
{
if (!ptr) return invalidId;
IdType id;
if (wantedId == anyId){
do
id = nextid++;
while (hashmap.contains(id));
} else {
if(isSpecialId(wantedId) || hashmap.contains(wantedId))
throw BadIdException("Id already in use");
id = wantedId;
}
hashmap.insert(id, ptr);
return id;
}
IdRegisteredClass &IdRegister::operator [](IdType id) const
{
return ref(id);
}
IdRegisteredClass &IdRegister::ref(IdType id) const
{
IdRegisteredClass *ptr = hashmap.value(id, 0);
if (!ptr) throw BadIdException("No object under id");
return *ptr;
}
IdRegisteredClass *IdRegister::ptr(IdType id) const
{
return hashmap.value(id, 0);
}
bool IdRegister::freeEverythingAtDestroy() const
{
return freeEverythingAtDestroyVal;
}
void IdRegister::setFreeEverythingAtDestroy(bool b)
{
freeEverythingAtDestroyVal = b;
}
void IdRegister::unregister(IdType id)
{
unregister(ptr(id));
}
void IdRegister::unregister(IdRegisteredClass *obj)
{
if (!obj || (&obj->registeredIn()) != this) return;
IdType id = obj->id();
obj->idVal = invalidId;
obj->registeredInVal = 0;
hashmap.remove(id);
}
/*--------------------,
| IdRegisteredClass |
`--------------------*/
IdRegisteredClass::IdRegisteredClass()
: idVal(invalidId), registeredInVal(0)
{
}
IdRegisteredClass::IdRegisteredClass(IdRegister ®, IdType id)
: idVal(reg.registerObject(this, id)), registeredInVal(®)
{
}
IdRegisteredClass::~IdRegisteredClass()
{
if (registeredInVal) registeredInVal->unregister(this);
}
IdType IdRegisteredClass::id() const
{
return idVal;
}
IdRegister &IdRegisteredClass::registeredIn() const
{
// a co jesli registeredInVal jest nullem?
return *registeredInVal;
}
void IdRegisteredClass::registerIn(Reg ®, IdType id)
{
if (registeredInVal) registeredInVal->unregister(this);
idVal = reg.registerObject(this, id);
registeredInVal = ®
}