OptionVars.h
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00001 /*
00002  * OptionVars.h
00003  *
00004  *  Created on: Apr 21, 2010
00005  *      Author: Erik Schuitema
00006  *
00007  *  A COptionVar keeps track of whether it has been assigned or not.
00008  *
00009  *  Example:
00010            configSection.get("steptime", &mOptionDbl);
00011            logNoticeLn(CLog2("temp"), "After reading steptime, isSet() = " << mOptionDbl.isSet() << ", value = " << mOptionDbl);
00012            mOptionDbl.reset();
00013            configSection.get("nonexistent", &mOptionDbl);
00014            logNoticeLn(CLog2("temp"), "After reading rubbish, isSet() = " << mOptionDbl.isSet() << ", value = " << mOptionDbl);
00015 
00016         Output:
00017            [temp] NTC: After reading steptime, isSet() = 1, value = 0.0133333
00018            [temp] NTC: After reading rubbish, isSet() = 0, value = 0.0133333
00019  *
00020  */
00021 
00022 #ifndef OPTIONVARS_H_
00023 #define OPTIONVARS_H_
00024 
00025 template<class T>
00026 class COptionVar
00027 {
00028         protected:
00029                 bool    mSet;
00030                 T               mValue;
00031 
00032         public:
00033                 COptionVar()                                                                    {mValue = 0; mSet=false;}
00034 
00035                 bool isSet()                                                                    {return mSet;}
00036                 void reset()                                                                    {mSet=false;}
00037                 // The object can be cast to a const reference of its native type T
00038                 operator const T&()                                                             {return mValue;}
00039                 // Assignment of a value of its native type T
00040                 COptionVar<T>& operator =(const T& newValue)    {mValue = newValue; mSet = true; return *this;}
00041 };
00042 
00043 typedef COptionVar<bool>                        COptionBool;
00044 typedef COptionVar<int>                         COptionInt;
00045 typedef COptionVar<double>                      COptionDouble;
00046 typedef COptionVar<char>                        COptionChar;
00047 typedef COptionVar<unsigned char>       COptionByte;
00048 typedef COptionVar<unsigned short>      COptionWord;
00049 
00050 #endif /* OPTIONVARS_H_ */


threemxl
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autogenerated on Thu Jun 6 2019 21:10:52