Teuchos_StringToIntMap.hpp

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// ***********************************************************************
//
//                    Teuchos: Common Tools Package
//                 Copyright (2004) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
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// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
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#ifndef TEUCHOS_STRING_TO_INT_MAP_HPP
#define TEUCHOS_STRING_TO_INT_MAP_HPP

#include "Teuchos_TestForException.hpp"

namespace Teuchos {

class StringToIntMap {
public:

  class AlreadyExists : public std::logic_error
  {public: AlreadyExists(const std::string& what_arg) : std::logic_error(what_arg) {}};

  class DoesNotExist : public std::logic_error
  {public: DoesNotExist(const std::string& what_arg) : std::logic_error(what_arg) {}};

  StringToIntMap( const std::string& defaultGroupName, int n, const char* strings[] );

  int get( const std::string& option, const std::string& groupName = "" ) const;

  template<class EnumType>
  EnumType get( const std::string& option, const std::string& groupName = "" ) const;

  const std::string& defaultGroupName() const;

private:

  typedef std::map< std::string, int > map_t;  // all share implementation.
  std::string defaultGroupName_;
  map_t map_;

  std::string validSelections() const;

  // not defined and not to be called.
  StringToIntMap();

};  // end class StringToIntMap

template<class EnumType>
inline
EnumType get(
  StringToIntMap const& theMap
  ,std::string const& option
  ,std::string const& groupName = ""
  )
{
  return static_cast<EnumType>(theMap.get(option,groupName));
}

// ////////////////////////////////////////////
// Inline declarations

template<class EnumType>
inline
EnumType StringToIntMap::get( const std::string& option, const std::string& groupName ) const
{
  return static_cast<EnumType>(get(option,groupName));
}

inline
const std::string& StringToIntMap::defaultGroupName() const
{
  return defaultGroupName_;
}

}  // end namespace Teuchos

#endif  // TEUCHOS_STRING_TO_INT_MAP_HPP