168 lines
4.7 KiB
C++
168 lines
4.7 KiB
C++
// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef AI_FACTORY_H
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#define AI_FACTORY_H
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#include <nel/misc/types_nl.h>
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#include <map>
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template <class BaseClass>
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class IAiFactory
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:public NLMISC::CDbgRefCount<IAiFactory<BaseClass> >
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{
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public:
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virtual BaseClass *createObject(const typename BaseClass::CtorParam& ctorParam) = 0;
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};
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template <class BaseClass, class KeyType = std::string>
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class CAiFactoryContainer
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{
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typedef std::map<KeyType, NLMISC::CDbgPtr<IAiFactory<BaseClass> > > TRegisterCont;
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public:
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static CAiFactoryContainer &instance()
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{
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if (!_Instance)
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{
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_Instance = new CAiFactoryContainer();
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}
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return *_Instance;
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}
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virtual ~CAiFactoryContainer()
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{
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}
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void release()
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{
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delete this;
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_Instance = NULL;
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}
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void registerFactory(const KeyType &key, IAiFactory<BaseClass> *factoryRegister)
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{
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nlassert(_FactoryRegisters.find(key) == _FactoryRegisters.end());
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_FactoryRegisters.insert(std::make_pair(key, factoryRegister));
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}
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IAiFactory<BaseClass>* getFactory (const KeyType &key)
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{
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typename TRegisterCont::iterator it (_FactoryRegisters.find(key));
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if (it!=_FactoryRegisters.end())
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return it->second;
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return NULL;
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}
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protected:
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static CAiFactoryContainer *_Instance;
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private:
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TRegisterCont _FactoryRegisters;
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};
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template <class BaseClass, class SpecializedClass>
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class CAiFactory : public IAiFactory<BaseClass>
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{
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public:
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CAiFactory ()
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{
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}
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BaseClass *createObject(const typename BaseClass::CtorParam& ctorParam)
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{
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return new SpecializedClass(ctorParam);
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}
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};
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/////////////////////////////////////////////////////////
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// Factory indirect
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template <class BaseFactoryClass>
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class IAiFactoryIndirectRegister
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{
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public:
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virtual BaseFactoryClass *getFactory() = 0;
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};
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template <class BaseFactoryClass, class KeyType = std::string>
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class CAiFactoryIndirect
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{
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typedef std::map<KeyType, IAiFactoryIndirectRegister<BaseFactoryClass>*> TRegisterCont;
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public:
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static CAiFactoryIndirect &instance()
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{
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if (!_Instance)
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{
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_Instance = new CAiFactoryIndirect();
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}
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return *_Instance;
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}
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void registerClass(const KeyType &key, IAiFactoryIndirectRegister<BaseFactoryClass> *factoryRegister)
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{
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nlassert(_FactoryRegisters.find(key) == _FactoryRegisters.end());
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_FactoryRegisters.insert(std::make_pair(key, factoryRegister));
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}
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BaseFactoryClass *getFactory(const KeyType &key)
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{
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typename TRegisterCont::const_iterator it (_FactoryRegisters.find(key));
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if (it == _FactoryRegisters.end())
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return NULL;
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else
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return it->second->getFactory();
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}
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private:
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static CAiFactoryIndirect *_Instance;
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TRegisterCont _FactoryRegisters;
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};
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template <class IndirectFactoryClass, class BaseFactoryClass, class SpecializedFactoryClass, class KeyType>
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class CAiFactoryIndirectRegister : public IAiFactoryIndirectRegister<BaseFactoryClass>
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{
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SpecializedFactoryClass _FactoryClass;
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public:
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CAiFactoryIndirectRegister(const KeyType &key)
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{
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IndirectFactoryClass::instance().registerClass(key, this);
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}
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BaseFactoryClass *getFactory()
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{
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return &_FactoryClass;
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}
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};
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#define RYAI_IMPLEMENT_FACTORY_INDIRECT(baseFactoryClass, keyType) template <> CAiFactoryIndirect<baseFactoryClass, keyType> *CAiFactoryIndirect<baseFactoryClass, keyType>::_Instance = NULL
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#define RYAI_REGISTER_FACTORY(baseFactoryClass, specializedFactoryClass, keyType, keyValue) CAiFactoryIndirectRegister<CAiFactoryIndirect<baseFactoryClass, keyType>, baseFactoryClass, specializedFactoryClass, keyType> RegisterIndirect##specializedFactoryClass(keyValue)
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#define RYAI_DECLARE_FACTORY(baseFactoryClass, specializedFactoryClass, keyType) extern CAiFactoryIndirectRegister<CAiFactoryIndirect<baseFactoryClass, keyType>, baseFactoryClass, specializedFactoryClass, keyType> RegisterIndirect##specializedFactoryClass
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#define RYAI_GET_FACTORY(specializedFactoryClass) RegisterIndirect##specializedFactoryClass.getFactory()
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#endif // FACTORY_H
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