00001 // 00002 // ******************************************************************** 00003 // * License and Disclaimer * 00004 // * * 00005 // * The Geant4 software is copyright of the Copyright Holders of * 00006 // * the Geant4 Collaboration. It is provided under the terms and * 00007 // * conditions of the Geant4 Software License, included in the file * 00008 // * LICENSE and available at http://cern.ch/geant4/license . These * 00009 // * include a list of copyright holders. * 00010 // * * 00011 // * Neither the authors of this software system, nor their employing * 00012 // * institutes,nor the agencies providing financial support for this * 00013 // * work make any representation or warranty, express or implied, * 00014 // * regarding this software system or assume any liability for its * 00015 // * use. Please see the license in the file LICENSE and URL above * 00016 // * for the full disclaimer and the limitation of liability. * 00017 // * * 00018 // * This code implementation is the result of the scientific and * 00019 // * technical work of the GEANT4 collaboration. * 00020 // * By using, copying, modifying or distributing the software (or * 00021 // * any work based on the software) you agree to acknowledge its * 00022 // * use in resulting scientific publications, and indicate your * 00023 // * acceptance of all terms of the Geant4 Software license. * 00024 // ******************************************************************** 00025 // 00026 #ifndef G4CrossSectionFactory_h 00027 #define G4CrossSectionFactory_h 1 00028 00029 00030 #include "globals.hh" 00031 #include "G4CrossSectionDataSetRegistry.hh" 00032 #include "G4VCrossSectionDataSet.hh" 00033 00034 class G4VBaseXSFactory 00035 { 00036 00037 public: 00038 00039 virtual G4VCrossSectionDataSet* Instantiate() = 0; 00040 00041 }; 00042 00043 00044 template <typename T> class G4CrossSectionFactory : public G4VBaseXSFactory 00045 { 00046 public: 00047 00048 G4CrossSectionFactory(const G4String& name) 00049 { 00050 G4CrossSectionDataSetRegistry::Instance()->AddFactory(name, this); 00051 } 00052 00053 virtual G4VCrossSectionDataSet* Instantiate() 00054 { 00055 return new T(); 00056 } 00057 }; 00058 00059 00060 #define G4_DECLARE_XS_FACTORY(cross_section) \ 00061 const G4CrossSectionFactory<cross_section>& cross_section##Factory = G4CrossSectionFactory<cross_section>(cross_section::Default_Name()) 00062 00063 #define G4_REFERENCE_XS_FACTORY(cross_section) \ 00064 class cross_section; \ 00065 extern const G4CrossSectionFactory<cross_section>& cross_section##Factory; \ 00066 const G4CrossSectionFactory<cross_section>& cross_section##FactoryRef = cross_section##Factory 00067 00068 00069 #endif