00001 // @(#)root/meta:$Id: TIsAProxy.h 20882 2007-11-19 11:31:26Z rdm $ 00002 // Author: Markus Frank 20/05/2005 00003 00004 /************************************************************************* 00005 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. * 00006 * All rights reserved. * 00007 * * 00008 * For the licensing terms see $ROOTSYS/LICENSE. * 00009 * For the list of contributors see $ROOTSYS/README/CREDITS. * 00010 *************************************************************************/ 00011 00012 #ifndef ROOT_TIsAProxy 00013 #define ROOT_TIsAProxy 00014 00015 #ifndef ROOT_TVirtualIsAProxy 00016 #include "TVirtualIsAProxy.h" 00017 #endif 00018 #ifndef ROOT_Rtypes 00019 #include "Rtypes.h" 00020 #endif 00021 00022 00023 class TClass; 00024 00025 ////////////////////////////////////////////////////////////////////////// 00026 // // 00027 // TIsAProxy implementation class. // 00028 // // 00029 ////////////////////////////////////////////////////////////////////////// 00030 class TIsAProxy : public TVirtualIsAProxy { 00031 00032 private: 00033 const type_info *fType; //Actual typeid of the proxy 00034 const type_info *fLastType; //Last used subtype 00035 TClass *fClass; //Actual TClass 00036 TClass *fLastClass; //Last used TClass 00037 Char_t fSubTypes[72]; //map of known sub-types 00038 Bool_t fVirtual; //Flag if class is virtual 00039 void *fContext; //Optional user contex 00040 Bool_t fInit; //Initialization flag 00041 00042 protected: 00043 TIsAProxy(const TIsAProxy&); 00044 TIsAProxy& operator=(const TIsAProxy&); 00045 00046 public: 00047 // Standard initializing constructor 00048 TIsAProxy(const type_info &typ, void *ctxt = 0); 00049 // Standard destructor 00050 virtual ~TIsAProxy(); 00051 // Callbacl to set the class 00052 virtual void SetClass(TClass *cl); 00053 // IsA callback 00054 virtual TClass* operator()(const void *obj); 00055 }; 00056 00057 ////////////////////////////////////////////////////////////////////////// 00058 // // 00059 // TInstrumentedIsAProxy implementation class. // 00060 // // 00061 ////////////////////////////////////////////////////////////////////////// 00062 template <class T> class TInstrumentedIsAProxy : public TVirtualIsAProxy { 00063 00064 private: 00065 TClass *fClass; //Actual TClass 00066 00067 protected: 00068 TInstrumentedIsAProxy(const TInstrumentedIsAProxy& iip) : 00069 TVirtualIsAProxy(iip), fClass(iip.fClass) { } 00070 TInstrumentedIsAProxy& operator=(const TInstrumentedIsAProxy& iip) 00071 {if(this!=&iip) {TVirtualIsAProxy::operator=(iip); fClass=iip.fClass;} 00072 return *this;} 00073 00074 public: 00075 // Standard initializing constructor 00076 TInstrumentedIsAProxy(TClass *cl) : fClass(cl) {} 00077 // Standard destructor 00078 virtual ~TInstrumentedIsAProxy() {} 00079 // Callbacl to set the class 00080 virtual void SetClass(TClass *cl) { fClass = cl; } 00081 // IsA callback 00082 virtual TClass* operator()(const void *obj) { 00083 return obj==0 ? fClass : ((T*)obj)->IsA(); 00084 } 00085 }; 00086 00087 #endif // ROOT_TIsAProxy
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