/* -*- C++ -*-

 * lemon/default_map.h - Part of LEMON, a generic C++ optimization library

 *

 * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Research Group on Combinatorial Optimization, EGRES).

 *

 * Permission to use, modify and distribute this software is granted

 * provided that this copyright notice appears in all copies. For

 * precise terms see the accompanying LICENSE file.

 *

 * This software is provided "AS IS" with no warranty of any kind,

 * express or implied, and with no claim as to its suitability for any

 * purpose.

 *

 */

#ifndef LEMON_DEFAULT_MAP_H

#define LEMON_DEFAULT_MAP_H

#include <lemon/bits/array_map.h>

#include <lemon/bits/vector_map.h>

///\ingroup graphmapfactory

///\file

///\brief Graph maps that construct and destruct

///their elements dynamically.

namespace lemon {

  template <typename _Graph, typename _Item, typename _Value>

  struct DefaultMapSelector {

    typedef ArrayMap<_Graph, _Item, _Value> Map;

  };

  // bool

  template <typename _Graph, typename _Item>

  struct DefaultMapSelector<_Graph, _Item, bool> {

    typedef VectorMap<_Graph, _Item, bool> Map;

  };

  // char

  template <typename _Graph, typename _Item>

  struct DefaultMapSelector<_Graph, _Item, char> {

    typedef VectorMap<_Graph, _Item, char> Map;

  };

  template <typename _Graph, typename _Item>

  struct DefaultMapSelector<_Graph, _Item, signed char> {

    typedef VectorMap<_Graph, _Item, signed char> Map;

  };

  template <typename _Graph, typename _Item>

  struct DefaultMapSelector<_Graph, _Item, unsigned char> {

    typedef VectorMap<_Graph, _Item, unsigned char> Map;

  };

  // int

  template <typename _Graph, typename _Item>

  struct DefaultMapSelector<_Graph, _Item, signed int> {

    typedef VectorMap<_Graph, _Item, signed int> Map;

  };

  template <typename _Graph, typename _Item>

  struct DefaultMapSelector<_Graph, _Item, unsigned int> {

    typedef VectorMap<_Graph, _Item, unsigned int> Map;

  };

  // short

  template <typename _Graph, typename _Item>

  struct DefaultMapSelector<_Graph, _Item, signed short> {

    typedef VectorMap<_Graph, _Item, signed short> Map;

  };

  template <typename _Graph, typename _Item>

  struct DefaultMapSelector<_Graph, _Item, unsigned short> {

    typedef VectorMap<_Graph, _Item, unsigned short> Map;

  };

  // long

  template <typename _Graph, typename _Item>

  struct DefaultMapSelector<_Graph, _Item, signed long> {

    typedef VectorMap<_Graph, _Item, signed long> Map;

  };

  template <typename _Graph, typename _Item>

  struct DefaultMapSelector<_Graph, _Item, unsigned long> {

    typedef VectorMap<_Graph, _Item, unsigned long> Map;

  };

  // \todo handling long long type

  // float

  template <typename _Graph, typename _Item>

  struct DefaultMapSelector<_Graph, _Item, float> {

    typedef VectorMap<_Graph, _Item, float> Map;

  };

  // double

  template <typename _Graph, typename _Item>

  struct DefaultMapSelector<_Graph, _Item, double> {

    typedef VectorMap<_Graph, _Item,  double> Map;

  };

  // long double

  template <typename _Graph, typename _Item>

  struct DefaultMapSelector<_Graph, _Item, long double> {

    typedef VectorMap<_Graph, _Item, long double> Map;

  };

  // pointer

  template <typename _Graph, typename _Item, typename _Ptr>

  struct DefaultMapSelector<_Graph, _Item, _Ptr*> {

    typedef VectorMap<_Graph, _Item, _Ptr*> Map;

  };

  /// \e

  template <

    typename _Graph, 

    typename _Item,

    typename _Value>

  class DefaultMap 

    : public DefaultMapSelector<_Graph, _Item, _Value>::Map {

  public:

    typedef typename DefaultMapSelector<_Graph, _Item, _Value>::Map Parent;

    typedef DefaultMap<_Graph, _Item, _Value> Map;

    typedef typename Parent::Graph Graph;

    typedef typename Parent::Value Value;

    DefaultMap(const Graph& _g) : Parent(_g) {}

    DefaultMap(const Graph& _g, const Value& _v) : Parent(_g, _v) {}

  };

  /// \e

  template <typename _Base> 

  class MappableGraphExtender : public _Base {

  public:

    typedef MappableGraphExtender<_Base> Graph;

    typedef _Base Parent;

    typedef typename Parent::Node Node;

    typedef typename Parent::NodeIt NodeIt;

    typedef typename Parent::Edge Edge;

    typedef typename Parent::EdgeIt EdgeIt;

    template <typename _Value>

    class NodeMap 

      : public IterableMapExtender<DefaultMap<Graph, Node, _Value> > {

    public:

      typedef MappableGraphExtender Graph;

      typedef IterableMapExtender<DefaultMap<Graph, Node, _Value> > Parent;

      NodeMap(const Graph& _g) 

	: Parent(_g) {}

      NodeMap(const Graph& _g, const _Value& _v) 

	: Parent(_g, _v) {}

      NodeMap& operator=(const NodeMap& cmap) {

	return operator=<NodeMap>(cmap);

      }

      /// \brief Template assign operator.

      ///

      /// The given parameter should be conform to the ReadMap

      /// concecpt and could be indiced by the current item set of

      /// the NodeMap. In this case the value for each item

      /// is assigned by the value of the given ReadMap. 

      template <typename CMap>

      NodeMap& operator=(const CMap& cmap) {

	checkConcept<concept::ReadMap<Node, _Value>, CMap>();

	const typename Parent::Graph* graph = Parent::getGraph();

	Node it;

	for (graph->first(it); it != INVALID; graph->next(it)) {

	  Parent::set(it, cmap[it]);

	}

	return *this;

      }

    };

    template <typename _Value>

    class EdgeMap 

      : public IterableMapExtender<DefaultMap<Graph, Edge, _Value> > {

    public:

      typedef MappableGraphExtender Graph;

      typedef IterableMapExtender<DefaultMap<Graph, Edge, _Value> > Parent;

      EdgeMap(const Graph& _g) 

	: Parent(_g) {}

      EdgeMap(const Graph& _g, const _Value& _v) 

	: Parent(_g, _v) {}

      EdgeMap& operator=(const EdgeMap& cmap) {

	return operator=<EdgeMap>(cmap);

      }

      template <typename CMap>

      EdgeMap& operator=(const CMap& cmap) {

	checkConcept<concept::ReadMap<Edge, _Value>, CMap>();

	const typename Parent::Graph* graph = Parent::getGraph();

	Edge it;

	for (graph->first(it); it != INVALID; graph->next(it)) {

	  Parent::set(it, cmap[it]);

	}

	return *this;

      }

    };

  };

  /// \e

  template <typename _Base> 

  class MappableUndirGraphExtender : 

    public MappableGraphExtender<_Base> {

  public:

    typedef MappableUndirGraphExtender Graph;

    typedef MappableGraphExtender<_Base> Parent;

    typedef typename Parent::UndirEdge UndirEdge;

    template <typename _Value>

    class UndirEdgeMap 

      : public IterableMapExtender<DefaultMap<Graph, UndirEdge, _Value> > {

    public:

      typedef MappableUndirGraphExtender Graph;

      typedef IterableMapExtender<

	DefaultMap<Graph, UndirEdge, _Value> > Parent;

      UndirEdgeMap(const Graph& _g) 

	: Parent(_g) {}

      UndirEdgeMap(const Graph& _g, const _Value& _v) 

	: Parent(_g, _v) {}

      UndirEdgeMap& operator=(const UndirEdgeMap& cmap) {

	return operator=<UndirEdgeMap>(cmap);

      }

      template <typename CMap>

      UndirEdgeMap& operator=(const CMap& cmap) {

	checkConcept<concept::ReadMap<UndirEdge, _Value>, CMap>();

	const typename Parent::Graph* graph = Parent::getGraph();

	UndirEdge it;

	for (graph->first(it); it != INVALID; graph->next(it)) {

	  Parent::set(it, cmap[it]);

	}

	return *this;

      }

    };

  };

  template <typename _Base>

  class MappableUndirBipartiteGraphExtender : public _Base {

  public:

    typedef _Base Parent;

    typedef MappableUndirBipartiteGraphExtender Graph;

    typedef typename Parent::Node Node;

    typedef typename Parent::UpperNode UpperNode;

    typedef typename Parent::LowerNode LowerNode;

    typedef typename Parent::Edge Edge;

    typedef typename Parent::UndirEdge UndirEdge;

    template <typename _Value>

    class UpperNodeMap 

      : public IterableMapExtender<DefaultMap<Graph, UpperNode, _Value> > {

    public:

      typedef MappableUndirBipartiteGraphExtender Graph;

      typedef IterableMapExtender<DefaultMap<Graph, UpperNode, _Value> > 

      Parent;

      UpperNodeMap(const Graph& _g) 

	: Parent(_g) {}

      UpperNodeMap(const Graph& _g, const _Value& _v) 

	: Parent(_g, _v) {}

      UpperNodeMap& operator=(const UpperNodeMap& cmap) {

	return operator=<UpperNodeMap>(cmap);

      }

      /// \brief Template assign operator.

      ///

      /// The given parameter should be conform to the ReadMap

      /// concept and could be indiced by the current item set of

      /// the UpperNodeMap. In this case the value for each item

      /// is assigned by the value of the given ReadMap. 

      template <typename CMap>

      UpperNodeMap& operator=(const CMap& cmap) {

	checkConcept<concept::ReadMap<UpperNode, _Value>, CMap>();

	const typename Parent::Graph* graph = Parent::getGraph();

	UpperNode it;

	for (graph->first(it); it != INVALID; graph->next(it)) {

	  Parent::set(it, cmap[it]);

	}

	return *this;

      }

    };

    template <typename _Value>

    class LowerNodeMap 

      : public IterableMapExtender<DefaultMap<Graph, LowerNode, _Value> > {

    public:

      typedef MappableUndirBipartiteGraphExtender Graph;

      typedef IterableMapExtender<DefaultMap<Graph, LowerNode, _Value> > 

      Parent;

      LowerNodeMap(const Graph& _g) 

	: Parent(_g) {}

      LowerNodeMap(const Graph& _g, const _Value& _v) 

	: Parent(_g, _v) {}

      LowerNodeMap& operator=(const LowerNodeMap& cmap) {

	return operator=<LowerNodeMap>(cmap);

      }

      /// \brief Template assign operator.

      ///

      /// The given parameter should be conform to the ReadMap

      /// concept and could be indiced by the current item set of

      /// the LowerNodeMap. In this case the value for each item

      /// is assigned by the value of the given ReadMap. 

      template <typename CMap>

      LowerNodeMap& operator=(const CMap& cmap) {

	checkConcept<concept::ReadMap<LowerNode, _Value>, CMap>();

	const typename Parent::Graph* graph = Parent::getGraph();

	LowerNode it;

	for (graph->first(it); it != INVALID; graph->next(it)) {

	  Parent::set(it, cmap[it]);

	}

	return *this;

      }

    };

  protected:

    template <typename _Value>

    class NodeMapBase : public Parent::NodeNotifier::ObserverBase {

    public:

      typedef MappableUndirBipartiteGraphExtender Graph;

      typedef Node Key;

      typedef _Value Value;

      /// The reference type of the map;

      typedef typename LowerNodeMap<_Value>::Reference Reference;

      /// The pointer type of the map;

      typedef typename LowerNodeMap<_Value>::Pointer Pointer;

      /// The const value type of the map.

      typedef const Value ConstValue;

      /// The const reference type of the map;

      typedef typename LowerNodeMap<_Value>::ConstReference ConstReference;

      /// The pointer type of the map;

      typedef typename LowerNodeMap<_Value>::ConstPointer ConstPointer;

      typedef True ReferenceMapTag;

      NodeMapBase(const Graph& _g) 

	: graph(&_g), lowerMap(_g), upperMap(_g) {

	Parent::NodeNotifier::ObserverBase::attach(_g.getNotifier(Node()));

      }

      NodeMapBase(const Graph& _g, const _Value& _v) 

	: graph(&_g), lowerMap(_g, _v), 

	  upperMap(_g, _v) {

	Parent::NodeNotifier::ObserverBase::attach(_g.getNotifier(Node()));

      }

      virtual ~NodeMapBase() {      

	if (Parent::NodeNotifier::ObserverBase::attached()) {

	  Parent::NodeNotifier::ObserverBase::detach();

	}

      }

      ConstReference operator[](const Key& node) const {

	if (Parent::upper(node)) {

	  return upperMap[node];

	} else {

	  return lowerMap[node];

	}

      } 

      Reference operator[](const Key& node) {

	if (Parent::upper(node)) {

	  return upperMap[node];

	} else {

	  return lowerMap[node];

	}

      }

      void set(const Key& node, const Value& value) {

	if (Parent::upper(node)) {

	  upperMap.set(node, value);

	} else {

	  lowerMap.set(node, value);

	}

      }

    protected:

      virtual void add(const Node&) {}

      virtual void erase(const Node&) {}

      virtual void clear() {}

      virtual void build() {}

      const Graph* getGraph() const { return graph; }

    private:

      const Graph* graph;

      LowerNodeMap<_Value> lowerMap;

      UpperNodeMap<_Value> upperMap;

    };

  public:

    template <typename _Value>

    class NodeMap 

      : public IterableMapExtender<NodeMapBase<_Value> > {

    public:

      typedef MappableUndirBipartiteGraphExtender Graph;

      typedef IterableMapExtender< NodeMapBase<_Value> > Parent;

      NodeMap(const Graph& _g) 

	: Parent(_g) {}

      NodeMap(const Graph& _g, const _Value& _v) 

	: Parent(_g, _v) {}

      NodeMap& operator=(const NodeMap& cmap) {

	return operator=<NodeMap>(cmap);

      }

      /// \brief Template assign operator.

      ///

      /// The given parameter should be conform to the ReadMap

      /// concept and could be indiced by the current item set of

      /// the NodeMap. In this case the value for each item

      /// is assigned by the value of the given ReadMap. 

      template <typename CMap>

      NodeMap& operator=(const CMap& cmap) {

	checkConcept<concept::ReadMap<Node, _Value>, CMap>();

	const typename Parent::Graph* graph = Parent::getGraph();

	Node it;

	for (graph->first(it); it != INVALID; graph->next(it)) {

	  Parent::set(it, cmap[it]);

	}

	return *this;

      }

    };

    template <typename _Value>

    class EdgeMap 

      : public IterableMapExtender<DefaultMap<Graph, Edge, _Value> > {

    public:

      typedef MappableUndirBipartiteGraphExtender Graph;

      typedef IterableMapExtender<DefaultMap<Graph, Edge, _Value> > Parent;

      EdgeMap(const Graph& _g) 

	: Parent(_g) {}

      EdgeMap(const Graph& _g, const _Value& _v) 

	: Parent(_g, _v) {}

      EdgeMap& operator=(const EdgeMap& cmap) {

	return operator=<EdgeMap>(cmap);

      }

      template <typename CMap>

      EdgeMap& operator=(const CMap& cmap) {

	checkConcept<concept::ReadMap<Edge, _Value>, CMap>();

	const typename Parent::Graph* graph = Parent::getGraph();

	Edge it;

	for (graph->first(it); it != INVALID; graph->next(it)) {

	  Parent::set(it, cmap[it]);

	}

	return *this;

      }

    };

    template <typename _Value>

    class UndirEdgeMap 

      : public IterableMapExtender<DefaultMap<Graph, UndirEdge, _Value> > {

    public:

      typedef MappableUndirBipartiteGraphExtender Graph;

      typedef IterableMapExtender<DefaultMap<Graph, UndirEdge, _Value> > 

      Parent;

      UndirEdgeMap(const Graph& _g) 

	: Parent(_g) {}

      UndirEdgeMap(const Graph& _g, const _Value& _v) 

	: Parent(_g, _v) {}

      UndirEdgeMap& operator=(const UndirEdgeMap& cmap) {

	return operator=<UndirEdgeMap>(cmap);

      }

      template <typename CMap>

      UndirEdgeMap& operator=(const CMap& cmap) {

	checkConcept<concept::ReadMap<UndirEdge, _Value>, CMap>();

	const typename Parent::Graph* graph = Parent::getGraph();

	UndirEdge it;

	for (graph->first(it); it != INVALID; graph->next(it)) {

	  Parent::set(it, cmap[it]);

	}

	return *this;

      }

    };

  };

}

#endif