---

stltools.Map.h

/*----------------------------------------------------------------------------
  SWORD 2000 - Software With Objects for Rapid Development
  Copyright (C) 2003 Eric NICOLAS
  ----------------------------------------------------------------------------
  SWORD 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 of the License, or
  (at your option) any later version.

  SWORD 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 SWORD; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  --------------------------------------------------------------------------*/
#ifndef _SWORD_STLTOOLS_MAP_
#define _SWORD_STLTOOLS_MAP_

#include <map>
#include "sword/streams.OStream.h"
#include "sword/streams.IStream.h"

namespace std {

        // Implementation for : "cout << map<IDX,T>"

        template<class IDX, class T>
        ostream& operator<<(ostream& lhs, const std::map<IDX,T>& rhs)
        {
                if (rhs.empty()) lhs << "<empty>";
                else
                {
                        lhs << "<";
                        for(std::map<IDX,T>::const_iterator i=rhs.begin();i!=rhs.end();++i)
                        {
                                if (i!=rhs.begin()) lhs << ", ";
                                lhs << i->first << "=>" << i->second;
                        }
                        lhs << ">";
                }
                return lhs;
        }

        // Implementation for : "OStream << map<IDX,T>"

        template<class K, class V>
  sword::OStream& operator<<(sword::OStream& lhs, std::map<K, V>& rhs)
        {
                lhs << rhs.size();
                for (std::map<K, V>::const_iterator it = rhs.begin(); it != rhs.end(); ++it)
                {
                        lhs << it->first;
                        lhs << it->second;
                }
                return lhs;
        }

        // Implementation for : "IStream << map<IDX,T>"

        template<class K, class V>
        sword::IStream& operator>>(sword::IStream& lhs, std::map<K, V>& rhs)
        {
                size_t size;
                lhs >> size;
                for(size_t i=0; i<size; ++i)
                {
                        K key;
                        V value;
                        lhs >> key;
                        lhs >> value;
                        rhs[key] = value;
                }
                return lhs;
        }

  // in<> on std::map

        template<class K, class V>
  bool in(const K& value, const std::map<K, V>& v)
  {
    return v.find(value) != v.end();
  }

} // namespace std

#endif // _SWORD_STLTOOLS_MAP_

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