StringToEnumValue.h

Go to the documentation of this file.

#ifndef _CommonTools_Utils_StringToEnumValue_h_
#define _CommonTools_Utils_StringToEnumValue_h_


#include "FWCore/Utilities/interface/Exception.h"
#include <Reflex/Reflex.h>
#include <string>
#include <sstream>
#include <vector>


template <class MyType> 
int StringToEnumValue(const std::string & enumName){
  
  using namespace ROOT::Reflex;
  
  Reflex::Type rflxType = Reflex::Type::ByTypeInfo(typeid(MyType));
  Reflex::Member member = rflxType.MemberByName(enumName);

  if (!member) {
    std::ostringstream err;
    err<<"StringToEnumValue Failure trying to convert " << enumName << " to int value";
    throw cms::Exception("ConversionError",err.str());
  }

  if (member.TypeOf().TypeInfo() != typeid(int)) {
    
    std::ostringstream err;
    err << "Type "<<  member.TypeOf().Name() << " is not Enum";
    throw cms::Exception("ConversionError",err.str());
  }
  return Object_Cast<int>(member.Get());

} // 


template <class MyType> 
std::vector<int> StringToEnumValue(const std::vector<std::string> & enumNames){
  
  using namespace ROOT::Reflex;
  using std::vector;
  using std::string;

  vector<int> ret;
  vector<string>::const_iterator str=enumNames.begin();
  for (;str!=enumNames.end();++str){
    ret.push_back( StringToEnumValue<MyType>(*str));
  }
  return ret;

} // 

#endif