// Copyright (C) 1996 DIMACS Center, Rutgers, The State University of New Jersey
// Author(s): Jonathan Berry
// This software is copyrighted by the DIMACS Center at Rutgers, The State
// University of New Jersey.  IT IS PROVIDED AS IS, AND THE AUTHORS, DIMACS, AND
// RUTGERS, THE STATE UNIVERSITY OF NEW JERSEY  DISCLAIM
// ALL LIABILITY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
// DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY
// DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
// THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.  THIS SOFTWARE
// IS PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE
// NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
// MODIFICATIONS.
// The authors hereby grant permission to use, copy, modify, distribute,
// and license this software and its documentation for any purpose, provided
// that existing copyright notices are retained in all copies and that this
// notice is included verbatim in any distributions. No written agreement,
// license, or royalty fee is required for any of the authorized uses.
// Modifications to this software may be copyrighted by their authors
// and need not follow the licensing terms described here, provided that
// the new terms are clearly indicated on the first page of each file where
// they apply.
// Last File Update: 7-Aug-1997
// 
#ifndef AttributeElementOps_h
#define AttributeElementOps_h
#include <iostream.h>

template <class Item>
class AttributeElementOps {
public:
	ostream& displayItem(ostream& os,  const Item& i) const;
};
//***********************************************************************
// Specializations of this class are found in graphTemplate.cpp
// and graphSpecializations.cpp
//***********************************************************************

//#ifdef DEFINE_AttributeElementOps_TEMPLATE
#include <LINK/graph/AttributeElementOps.cpp>
//#endif

// *****************************************************************
// EVERYTHING BELOW CAN GO WHEN VC++ SUPPORTS PARTIAL SPECIALIZATION
// *****************************************************************
class VertexInfo;
class Vertex;
class Edge;
template <class T> class Attribute;
template <class T> class AttributeElementOps;

typedef int CutState[2][2];
typedef char *String;
typedef CutState* _CutStatePtr;
typedef VertexInfo* _VertexInfoPtr;
typedef Vertex* VertexPtr;
typedef Edge* EdgePtr;

ostream& AttributeElementOps<float>::displayItem(ostream& os,
                                        const float&) const;
ostream& AttributeElementOps<double>::displayItem(ostream& os,
                                        const double&) const;
ostream& AttributeElementOps<String>::displayItem(ostream& os,
                                        const String&) const;
ostream& AttributeElementOps<VertexPtr>::displayItem(ostream& os,
                                        const VertexPtr&) const;
ostream& AttributeElementOps<EdgePtr>::displayItem(ostream& os,
                                        const EdgePtr&) const;

ostream& AttributeElementOps<_CutStatePtr>::displayItem(ostream& os,
                                        const _CutStatePtr& e) const;
ostream& AttributeElementOps<_VertexInfoPtr>::displayItem(ostream& os,
                                        const _VertexInfoPtr& e) const;

#endif
