Teuchos_map.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
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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
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// Questions? Contact Michael A. Heroux (maherou@sandia.gov) 
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#ifndef TEUCHOS_MAP_H
#define TEUCHOS_MAP_H

#include "Teuchos_ConfigDefs.hpp"

namespace Teuchos {

#ifdef TFLOP

template<class Key, class T>
class map {
public:
  typedef Key key_type;
  typedef T mapped_type;
  typedef std::pair<Key,T>  value_type;
  typedef std::list<value_type>  list_t;
  typedef typename list_t::iterator  iterator;
  typedef typename list_t::const_iterator  const_iterator;


    map() {}

    map( const map<Key,T>& map_in ) : list_( map_in.list_ ) {}

    virtual ~map() {}


    iterator begin() { return list_.begin(); }

    const_iterator begin() const { return list_.begin(); }

    iterator end() { return list_.end(); }

    const_iterator end() const { return list_.end(); }
      

    mapped_type& operator[]( const key_type& k )
    {
      iterator itr = find(k);
      if(itr != end()) return (*itr).second;
      list_.push_back( value_type( k, T() ) );
      return list_.back().second;
    }

  

    iterator find(const key_type& k)
    {
      for( iterator itr = begin(); itr != end(); ++itr ) {
        if( (*itr).first == k ) {
          return itr;
        }
      }
      return end();
    }


    const_iterator find(const key_type& k) const
    {
      for( const_iterator itr = begin(); itr != end(); ++itr ) {
        if( (*itr).first == k ) {
          return itr;
        }
      }
      return end();
    }

    bool empty() const { return list_.empty(); }

private:
  list_t list_;
};

#else

using std::map;

#endif

} // namespace Teuchos

#endif // TEUCHOS_MAP_H

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