FlagSet.h

#ifndef UTIL_FLAG_SET_H
#define UTIL_FLAG_SET_H

/*
* Util Package - C++ Utilities for Scientific Computation
*
* Copyright 2010 - 2017, The Regents of the University of Minnesota
* Distributed under the terms of the GNU General Public License.
*/

#include <util/global.h>
#include <string>
#include <map>

namespace Util
{

   class FlagSet 
   {

   public:
  
      FlagSet();
  
      FlagSet(std::string allowed);
  
      void setAllowed(std::string allowed);
  
      void setActualOrdered(std::string actual);
  
      bool isActive(char c) const;
  
      const std::string& allowed() const;
  
      const std::string& actual() const;
  
   private:

      typedef std::map<char, bool> MapType;

      std::string allowed_;

      std::string actual_;

      MapType map_;
 
   };

   // Inline function

   /*
   * Is this flag active?
   */
   inline 
   bool FlagSet::isActive(char c) const
   {
      MapType::const_iterator iter = map_.find(c);
      if (iter == map_.end()) {
         UTIL_THROW("Unknown character");
      } 
      return iter->second;
   }

   /*
   * Return the string of allowed characters.
   */ 
   inline 
   const std::string& FlagSet::allowed() const
   {  return allowed_; }
  
   /*
   * Return the string of actual character flags.
   */ 
   inline 
   const std::string& FlagSet::actual() const
   {  return actual_; }

}
#endif