language/duchain

duchainregister.h

00001 /* This file is part of KDevelop
00002     Copyright 2008 David Nolden <david.nolden.kdevelop@art-master.de>
00003 
00004    This library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Library General Public
00006    License version 2 as published by the Free Software Foundation.
00007 
00008    This library is distributed in the hope that it will be useful,
00009    but WITHOUT ANY WARRANTY; without even the implied warranty of
00010    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00011    Library General Public License for more details.
00012 
00013    You should have received a copy of the GNU Library General Public License
00014    along with this library; see the file COPYING.LIB.  If not, write to
00015    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00016    Boston, MA 02110-1301, USA.
00017 */
00018 
00019 #ifndef DUCHAINREGISTER_H
00020 #define DUCHAINREGISTER_H
00021 
00022 #include "duchainbase.h"
00023 
00024 namespace KDevelop {
00025 class DUChainBase;
00026 class DUChainBaseData;
00027 
00031 class KDEVPLATFORMLANGUAGE_EXPORT DUChainBaseFactory {
00032   public:
00033   virtual DUChainBase* create(DUChainBaseData* data) const = 0;
00034   virtual void callDestructor(DUChainBaseData* data) const = 0;
00035   virtual void freeDynamicData(DUChainBaseData* data) const = 0;
00036   virtual void copy(const DUChainBaseData& from, DUChainBaseData& to, bool constant) const = 0;
00037   virtual DUChainBaseData* cloneData(const DUChainBaseData& data) const = 0;
00038   virtual uint dynamicSize(const DUChainBaseData& data) const = 0;
00039 
00040   virtual ~DUChainBaseFactory() {
00041   }
00042 };
00043 
00045 template<class T, class Data>
00046 class DUChainItemFactory : public DUChainBaseFactory {
00047   public:
00048   DUChainBase* create(DUChainBaseData* data) const {
00049     return new T(*static_cast<Data*>(data));
00050   }
00051   
00052   void copy(const DUChainBaseData& from, DUChainBaseData& to, bool constant) const {
00053     Q_ASSERT(from.classId == T::Identity);
00054 
00055     bool previousConstant = DUChainBaseData::shouldCreateConstantData();
00056     DUChainBaseData::setShouldCreateConstantData(constant);
00057     
00058     new (&to) Data(static_cast<const Data&>(from)); //Call the copy constructor to initialize the target
00059     
00060     DUChainBaseData::setShouldCreateConstantData(previousConstant);
00061   }
00062   
00063   void callDestructor(DUChainBaseData* data) const {
00064     Q_ASSERT(data->classId == T::Identity);
00065     static_cast<Data*>(data)->~Data();
00066   }
00067 
00068   void freeDynamicData(DUChainBaseData* data) const {
00069     Q_ASSERT(data->classId == T::Identity);
00070     static_cast<Data*>(data)->freeDynamicData();
00071   }
00072 
00073   uint dynamicSize(const DUChainBaseData& data) const {
00074     Q_ASSERT(data.classId == T::Identity);
00075     return static_cast<const Data&>(data).dynamicSize();
00076   }
00077   
00078    DUChainBaseData* cloneData(const DUChainBaseData& data) const {
00079      Q_ASSERT(data.classId == T::Identity);
00080      return new Data(static_cast<const Data&>(data));
00081    }
00082 };
00083 
00090 class KDEVPLATFORMLANGUAGE_EXPORT DUChainItemSystem {
00091   public:
00095     template<class T, class Data>
00096     void registerTypeClass() {
00097       if(m_factories.size() <= T::Identity) {
00098         m_factories.resize(T::Identity+1);
00099         m_dataClassSizes.resize(T::Identity+1);
00100       }
00101 
00102       Q_ASSERT(!m_factories[T::Identity]);
00103       m_factories[T::Identity] = new DUChainItemFactory<T, Data>();
00104       m_dataClassSizes[T::Identity] = sizeof(Data);
00105     }
00106 
00110     template<class T, class Data>
00111     void unregisterTypeClass() {
00112       Q_ASSERT(m_factories.size() > T::Identity);
00113       Q_ASSERT(m_factories[T::Identity]);
00114       delete m_factories[T::Identity];
00115       m_factories[T::Identity] = 0;
00116       m_dataClassSizes[T::Identity] = 0;
00117     }
00118 
00123     DUChainBase* create(DUChainBaseData* data) const;
00124 
00126     DUChainBaseData* cloneData(const DUChainBaseData& data) const;
00127     
00132     void copy(const DUChainBaseData& from, DUChainBaseData& to, bool constant) const;
00133 
00135     uint dynamicSize(const DUChainBaseData& data) const;
00136 
00139     size_t dataClassSize(const DUChainBaseData& data) const;
00140 
00143     void callDestructor(DUChainBaseData* data) const;
00144 
00147     void freeDynamicData(DUChainBaseData* data) const;
00148     
00150     static DUChainItemSystem& self();
00151 
00152   private:
00153     QVector<DUChainBaseFactory*> m_factories;
00154     QVector<size_t> m_dataClassSizes;
00155 };
00156 
00160 template<class T, class Data>
00161 struct DUChainItemRegistrator {
00162   DUChainItemRegistrator() {
00163     DUChainItemSystem::self().registerTypeClass<T, Data>();
00164   }
00165   ~DUChainItemRegistrator() {
00166     DUChainItemSystem::self().unregisterTypeClass<T, Data>();
00167   }
00168 };
00169 
00173 #define REGISTER_DUCHAIN_ITEM(Class) KDevelop::DUChainItemRegistrator<Class, Class ## Data> register ## Class
00174 #define REGISTER_DUCHAIN_ITEM_WITH_DATA(Class, Data) KDevelop::DUChainItemRegistrator<Class, Data> register ## Class
00175 
00176 }
00177 
00178 #endif
language/duchain

duchainregister.h

language/duchain

KDevelop Platform Libraries
