EnumCast.h

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/********************************************************************
 *  Copyright (C) 2010 by Federico Marulli                          *
 *  federico.marulli3@unibo.it                                      *
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#ifndef __ENUMCAST__
#define __ENUMCAST__ 
 
namespace cbl {
 
  template<typename T, typename std::enable_if<std::is_enum<T>::value>::type* = nullptr>
    T castFromValue (const int i) { return static_cast<T>(i); }
 
  template<typename T, typename std::enable_if<std::is_enum<T>::value>::type* = nullptr>
    T castFromName (const std::string name, const std::vector<std::string> list) { 
    std::vector<std::string>::const_iterator it = std::find(list.begin(), list.end(), name);
    
    if (it!=list.end()) 
      return castFromValue<T>(int(it-list.begin()));
    
    else {
      std::cerr << par::col_red << std::endl <<"*** Error in castFromName of EnumCast.h! The name does not correspond to any element in list ***" << std::endl << par::col_default << std::endl;
      exit(1);
    }
    
  }
 
  template<typename T, typename std::enable_if<std::is_enum<T>::value>::type* = nullptr>
    std::vector<T> castFromValues (const std::vector<int> ii) 
    {
      std::vector<T> en(ii.size());
      for (size_t i=0; i<ii.size(); i++)
    en[i] = castFromValue<T>(ii[i]);
      return en;
    }
 
  template<typename T, typename std::enable_if<std::is_enum<T>::value>::type* = nullptr>
    std::vector<T> castFromNames (const std::vector<std::string> names, const std::vector<std::string> list) 
    {
      std::vector<T> en(names.size());
 
      for (size_t i=0; i<names.size(); i++)
    en[i] = castFromName<T>(names[i], list);
 
      return en;
    }
 
}
 
#endif