CWE-ou-minkata/Sources/Plasma/NucleusLib/pnKeyedObject/hsKeyedObject.cpp

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
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*==LICENSE==*/
#include "hsKeyedObject.h"
#include "plKeyImp.h"
#include "hsResMgr.h"
#include "pnDispatch/plDispatch.h"
#include "pnMessage/plSelfDestructMsg.h"

void hsKeyedObject::SetKey(plKey k)              
{
	if (fpKey != nil)
	{
		hsAssert(k == nil || k == fpKey, "Changing an object's key is not allowed");
		((plKeyImp*)fpKey)->SetObjectPtr(nil); 
	}

	fpKey = k;

	if (fpKey != nil)
		((plKeyImp*)fpKey)->SetObjectPtr(this); 
}	

hsBool hsKeyedObject::SendRef(plRefMsg* refMsg, plRefFlags::Type flags)
{
	plKey key = GetKey();		// for linux build
	return hsgResMgr::SendRef(key, refMsg, flags);
}

const char*	hsKeyedObject::GetKeyName() const
{
	if (fpKey)
		return fpKey->GetName();
	else
		return "(unknown)";
}

hsKeyedObject::~hsKeyedObject()
{ 
	if( fpKey && fpKey->ObjectIsLoaded() )
	{
		// If our key is pointing to an object (presumably back to us),
		// then UnRegister will call SetObjectPtr(nil) will unregister the key (and us), which will
		// decrement our RefCnt. Unfortunately, we are here because of a call
		// to our destructor, in which case we don't want to go back into our
		// destructor again. So we'll just up the RefCnt, plKey::UnRegister will dec it back to 1.
		hsRefCnt_SafeRef(fpKey->ObjectIsLoaded());
	}
	UnRegister(); 
}

void hsKeyedObject::UnRegister()
{
	if (fpKey)
	{
		if (plgDispatch::Dispatch())
			plgDispatch::Dispatch()->UnRegisterAll(fpKey);
		
		((plKeyImp *)fpKey)->SetObjectPtr(nil);
	}
}

plKey hsKeyedObject::RegisterAs(plFixedKeyId fixedKey)
{
	plUoid meUoid(fixedKey);

	hsAssert(meUoid.GetClassType() == ClassIndex(), "Registering as wrong type!");
	plKey key = hsgResMgr::ResMgr()->FindKey(meUoid);
	if (key == nil)
	{
		key = hsgResMgr::ResMgr()->NewKey(meUoid, this);
	}
	else
	{
		SetKey(key);
	}

	return key;
}


void hsKeyedObject::UnRegisterAs(plFixedKeyId fixedKey)
{
	plUoid uoid(fixedKey);
	UnRegisterAsManual(uoid);
}

plKey hsKeyedObject::RegisterAsManual(plUoid& meUoid, const char* p)
{
	hsAssert(meUoid.GetClassType() == ClassIndex(),"Registering as wrong type!");
	// Really should be a NewKey() call just for fixed keys, so change this once player rooms behave
	plKey pkey = hsgResMgr::ResMgr()->ReRegister(p,meUoid);

	if (pkey)
		SetKey(pkey);
	return pkey;
}


void hsKeyedObject::UnRegisterAsManual(plUoid& inUoid)
{
	if (fpKey)
	{
		plUoid myUoid = fpKey->GetUoid();
		if (!(inUoid == myUoid))
		{
#if !HS_BUILD_FOR_UNIX		// disable for unix servers
			char inStr[255], myStr[255];
			inUoid.StringIze(inStr);
			myUoid.StringIze(myStr);
			hsAssert(false,
				xtl::format("Request to Unregister wrong FixedKey, keyName=%s, inUoid=%s, myUoid=%s",
				fpKey->GetName() ? fpKey->GetName() : "?", inStr, myStr).c_str());
#endif
		}
		((plKeyImp*)fpKey)->UnRegister();
	}
}

void hsKeyedObject::Validate()
{
	const char* msg = "KeyedObject invalid!";

    if (fpKey)
    {
        hsAssert(fpKey->GetObjectPtr() == this, msg);
    }
}

void hsKeyedObject::Read(hsStream* s, hsResMgr* mgr)
{
	plKey pK = mgr->ReadKey(s);
	SetKey(pK);
}

void hsKeyedObject::Write(hsStream* s, hsResMgr* mgr)
{
	hsAssert(GetKey(),"hsKeyedObject:Must have a key!");
	mgr->WriteKey(s, fpKey);
}

hsBool hsKeyedObject::MsgReceive(plMessage* msg)
{
	plSelfDestructMsg* nuke = plSelfDestructMsg::ConvertNoRef(msg);
	if (nuke)
	{
		hsAssert(RefCnt() == 1, "Trying to selfdestruct with bogus refcnt");
		hsRefCnt_SafeUnRef(this); 

		return true;
	}
	return plReceiver::MsgReceive(msg);
}