| Geant4 Cross Reference |
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
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17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
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24 // ********************************************************************
25 //
26 #ifndef G4PhysListStamper_h
27 #define G4PhysListStamper_h 1
28
29
30 #include "globals.hh"
31 #include "G4PhysListRegistry.hh"
32 #include "G4VModularPhysicsList.hh"
33
34 class G4VBasePhysListStamper
35 {
36
37 public:
38
39 virtual G4VModularPhysicsList* Instantiate(G4int /* verbose */) = 0;
40
41 };
42
43
44 template <typename T> class G4PhysListStamper : public G4VBasePhysListStamper
45 {
46 public:
47
48 G4PhysListStamper(const G4String& name)
49 {
50 G4PhysListRegistry::Instance()->AddFactory(name, this);
51 }
52
53 virtual G4VModularPhysicsList* Instantiate(G4int verbose)
54 {
55 return new T(verbose);
56 }
57 };
58
59 #define G4_DECLARE_PHYSLIST_FACTORY(physics_list) \
60 const G4PhysListStamper<physics_list>& physics_list##Factory = G4PhysListStamper<physics_list>(#physics_list)
61
62 // support for physics list defined within a namespace
63 // a bit tricky because cpp macro expansion doesn't like "::"
64 // ala G4_DECLARE_PHYSLIST_FACTORY_NS(myns::MyPL,myns,MyPL);
65 #define G4_DECLARE_PHYSLIST_FACTORY_NS( physics_list , nsname , plbase ) \
66 namespace nsname { \
67 const G4PhysListStamper<physics_list>& plbase##Factory = G4PhysListStamper<physics_list>(#physics_list); \
68 } \
69 typedef int xyzzy__LINE__
70 // eat trailing semicolon using silly typedef
71
72 // REFERENCE (rather than DECLARE) when the physics list if it is part
73 // of a static library. No need to include the header (DECLARE needs this
74 // to build the code), we just need to make a reference in order to pull
75 // the compilation unit static variable from the library and cause it
76 // to be initialized (and thus self-register)
77
78 // this is _very_ much complicated because of the templating of these lists
79
80 #define G4_REFERENCE_PHYSLIST_FACTORY(physics_list) \
81 class G4VModularPhysicsList; \
82 template <class T> class T##physics_list; \
83 typedef T##physics_list<G4VModularPhysicsList> physics_list; \
84 extern const G4PhysListStamper<physics_list>& physics_list##Factory; \
85 const G4PhysListStamper<physics_list>& physics_list##FactoryRef = physics_list##Factory
86
87 #define G4_REFERENCE_PHYSLIST_FACTORY_NS(physics_list, nsname, plbase ) \
88 class G4VModularPhysicsList; \
89 namespace nsname { \
90 template <class T> class T##plbase; \
91 typedef T##plbase<G4VModularPhysicsList> plbase; \
92 extern const G4PhysListStamper<plbase>& plbase##Factory; \
93 const G4PhysListStamper<plbase>& plbase##FactoryRef = plbase##Factory; \
94 } \
95 typedef int xyzzy__LINE__
96 // eat trailing semicolon using silly typedef
97
98 #endif
99
100