[Lemon-commits] [lemon_svn] alpar: r988 - hugo/trunk/src/hugo/skeletons

Lemon SVN svn at lemon.cs.elte.hu
Mon Nov 6 20:42:35 CET 2006


Author: alpar
Date: Thu Jul 22 21:59:18 2004
New Revision: 988

Modified:
   hugo/trunk/src/hugo/skeletons/graph.h
   hugo/trunk/src/hugo/skeletons/maps.h

Log:
Skeletons have been simplified.
"Optional features" have been deleted.
Map skeletons have been renamed.


Modified: hugo/trunk/src/hugo/skeletons/graph.h
==============================================================================
--- hugo/trunk/src/hugo/skeletons/graph.h	(original)
+++ hugo/trunk/src/hugo/skeletons/graph.h	Thu Jul 22 21:59:18 2004
@@ -6,376 +6,365 @@
 ///\brief Declaration of GraphSkeleton.
 
 #include <hugo/invalid.h>
+#include <hugo/skeletons/maps.h>
 
 /// The namespace of HugoLib
 namespace hugo {
+  namespace skeleton {
+    
+    // @defgroup empty_graph The GraphSkeleton class
+    // @{
 
-  // @defgroup empty_graph The GraphSkeleton class
-  // @{
-
-  /// An empty graph class.
+    /// An empty static graph class.
   
-  /// This class provides all the common features of a graph structure,
-  /// however completely without implementations and real data structures
-  /// behind the interface.
-  /// All graph algorithms should compile with this class, but it will not
-  /// run properly, of course.
-  ///
-  /// It can be used for checking the interface compatibility,
-  /// or it can serve as a skeleton of a new graph structure.
-  /// 
-  /// Also, you will find here the full documentation of a certain graph
-  /// feature, the documentation of a real graph imlementation
-  /// like @ref ListGraph or
-  /// @ref SmartGraph will just refer to this structure.
-  class GraphSkeleton
-  {
-  public:
-    /// Defalult constructor.
-    GraphSkeleton() {}
-    ///Copy consructor.
-
-    ///\todo It is not clear, what we expect from a copy constructor.
-    ///E.g. How to assign the nodes/edges to each other? What about maps?
-    GraphSkeleton(const GraphSkeleton &G) {}
-
-    /// The base type of the node iterators.
-
-    /// This is the base type of each node iterators,
-    /// thus each kind of node iterator will convert to this.
-    class Node {
+    /// This class provides all the common features of a graph structure,
+    /// however completely without implementations and real data structures
+    /// behind the interface.
+    /// All graph algorithms should compile with this class, but it will not
+    /// run properly, of course.
+    ///
+    /// It can be used for checking the interface compatibility,
+    /// or it can serve as a skeleton of a new graph structure.
+    /// 
+    /// Also, you will find here the full documentation of a certain graph
+    /// feature, the documentation of a real graph imlementation
+    /// like @ref ListGraph or
+    /// @ref SmartGraph will just refer to this structure.
+    class StaticGraphSkeleton
+    {
     public:
-      /// @warning The default constructor sets the iterator
-      /// to an undefined value.
-      Node() {}   //FIXME
-      /// Invalid constructor \& conversion.
-
-      /// This constructor initializes the iterator to be invalid.
-      /// \sa Invalid for more details.
-
-      Node(Invalid) {}
-      //Node(const Node &) {}
-
-      /// Two iterators are equal if and only if they point to the
-      /// same object or both are invalid.
-      bool operator==(Node) const { return true; }
-
-      /// \sa \ref operator==(Node n)
-      ///
-      bool operator!=(Node) const { return true; }
+      /// Defalult constructor.
+      StaticGraphSkeleton() {}
+      ///Copy consructor.
+
+      ///\todo It is not clear, what we expect from a copy constructor.
+      ///E.g. How to assign the nodes/edges to each other? What about maps?
+      StaticGraphSkeleton(const StaticGraphSkeleton &G) {}
+
+      /// The base type of the node iterators.
+
+      /// This is the base type of each node iterators,
+      /// thus each kind of node iterator will convert to this.
+      class Node {
+      public:
+	/// @warning The default constructor sets the iterator
+	/// to an undefined value.
+	Node() {}   //FIXME
+	/// Invalid constructor \& conversion.
+
+	/// This constructor initializes the iterator to be invalid.
+	/// \sa Invalid for more details.
+
+	Node(Invalid) {}
+	//Node(const Node &) {}
+
+	/// Two iterators are equal if and only if they point to the
+	/// same object or both are invalid.
+	bool operator==(Node) const { return true; }
+
+	/// \sa \ref operator==(Node n)
+	///
+	bool operator!=(Node) const { return true; }
 
-      bool operator<(Node) const { return true; }
-    };
+	bool operator<(Node) const { return true; }
+      };
     
-    /// This iterator goes through each node.
+      /// This iterator goes through each node.
 
-    /// This iterator goes through each node.
-    /// Its usage is quite simple, for example you can count the number
-    /// of nodes in graph \c G of type \c Graph like this:
-    /// \code
-    ///int count=0;
-    ///for(Graph::NodeIt n(G);G.valid(n);G.next(n)) count++;
-    /// \endcode
-    class NodeIt : public Node {
-    public:
-      /// @warning The default constructor sets the iterator
-      /// to an undefined value.
-      NodeIt() {} //FIXME
-      /// Invalid constructor \& conversion.
-
-      /// Initialize the iterator to be invalid
-      /// \sa Invalid for more details.
-      NodeIt(Invalid) {}
-      /// Sets the iterator to the first node of \c G.
-      NodeIt(const GraphSkeleton &) {}
-      /// @warning The default constructor sets the iterator
-      /// to an undefined value.
-      NodeIt(const NodeIt &n) : Node(n) {}
-    };
+      /// This iterator goes through each node.
+      /// Its usage is quite simple, for example you can count the number
+      /// of nodes in graph \c G of type \c Graph like this:
+      /// \code
+      ///int count=0;
+      ///for(Graph::NodeIt n(G);G.valid(n);G.next(n)) count++;
+      /// \endcode
+      class NodeIt : public Node {
+      public:
+	/// @warning The default constructor sets the iterator
+	/// to an undefined value.
+	NodeIt() {} //FIXME
+	/// Invalid constructor \& conversion.
+
+	/// Initialize the iterator to be invalid
+	/// \sa Invalid for more details.
+	NodeIt(Invalid) {}
+	/// Sets the iterator to the first node of \c G.
+	NodeIt(const StaticGraphSkeleton &) {}
+	/// @warning The default constructor sets the iterator
+	/// to an undefined value.
+	NodeIt(const NodeIt &n) : Node(n) {}
+      };
     
     
-    /// The base type of the edge iterators.
-    class Edge {
-    public:
-      /// @warning The default constructor sets the iterator
-      /// to an undefined value.
-      Edge() {}   //FIXME
-      /// Initialize the iterator to be invalid
-      Edge(Invalid) {}
-      /// Two iterators are equal if and only if they point to the
-      /// same object or both are invalid.
-      bool operator==(Edge) const { return true; }
-      bool operator!=(Edge) const { return true; }
-      bool operator<(Edge) const { return true; }
-    };
+      /// The base type of the edge iterators.
+      class Edge {
+      public:
+	/// @warning The default constructor sets the iterator
+	/// to an undefined value.
+	Edge() {}   //FIXME
+	/// Initialize the iterator to be invalid
+	Edge(Invalid) {}
+	/// Two iterators are equal if and only if they point to the
+	/// same object or both are invalid.
+	bool operator==(Edge) const { return true; }
+	bool operator!=(Edge) const { return true; }
+	bool operator<(Edge) const { return true; }
+      };
     
-    /// This iterator goes trough the outgoing edges of a node.
+      /// This iterator goes trough the outgoing edges of a node.
 
-    /// This iterator goes trough the \e outgoing edges of a certain node
-    /// of a graph.
-    /// Its usage is quite simple, for example you can count the number
-    /// of outgoing edges of a node \c n
-    /// in graph \c G of type \c Graph as follows.
-    /// \code
-    ///int count=0;
-    ///for(Graph::OutEdgeIt e(G,n);G.valid(e);G.next(e)) count++;
-    /// \endcode
+      /// This iterator goes trough the \e outgoing edges of a certain node
+      /// of a graph.
+      /// Its usage is quite simple, for example you can count the number
+      /// of outgoing edges of a node \c n
+      /// in graph \c G of type \c Graph as follows.
+      /// \code
+      ///int count=0;
+      ///for(Graph::OutEdgeIt e(G,n);G.valid(e);G.next(e)) count++;
+      /// \endcode
     
-    class OutEdgeIt : public Edge {
-    public:
-      /// @warning The default constructor sets the iterator
-      /// to an undefined value.
-      OutEdgeIt() {}
-      /// Initialize the iterator to be invalid
-      OutEdgeIt(Invalid) {}
-      /// This constructor sets the iterator to first outgoing edge.
+      class OutEdgeIt : public Edge {
+      public:
+	/// @warning The default constructor sets the iterator
+	/// to an undefined value.
+	OutEdgeIt() {}
+	/// Initialize the iterator to be invalid
+	OutEdgeIt(Invalid) {}
+	/// This constructor sets the iterator to first outgoing edge.
     
-      /// This constructor set the iterator to the first outgoing edge of
-      /// node
-      ///@param n the node
-      ///@param G the graph
-      OutEdgeIt(const GraphSkeleton &, Node) {}
-    };
-
-    /// This iterator goes trough the incoming edges of a node.
-
-    /// This iterator goes trough the \e incoming edges of a certain node
-    /// of a graph.
-    /// Its usage is quite simple, for example you can count the number
-    /// of outgoing edges of a node \c n
-    /// in graph \c G of type \c Graph as follows.
-    /// \code
-    ///int count=0;
-    ///for(Graph::InEdgeIt e(G,n);G.valid(e);G.next(e)) count++;
-    /// \endcode
+	/// This constructor set the iterator to the first outgoing edge of
+	/// node
+	///@param n the node
+	///@param G the graph
+	OutEdgeIt(const StaticGraphSkeleton &, Node) {}
+      };
+
+      /// This iterator goes trough the incoming edges of a node.
+
+      /// This iterator goes trough the \e incoming edges of a certain node
+      /// of a graph.
+      /// Its usage is quite simple, for example you can count the number
+      /// of outgoing edges of a node \c n
+      /// in graph \c G of type \c Graph as follows.
+      /// \code
+      ///int count=0;
+      ///for(Graph::InEdgeIt e(G,n);G.valid(e);G.next(e)) count++;
+      /// \endcode
+
+      class InEdgeIt : public Edge {
+      public:
+	/// @warning The default constructor sets the iterator
+	/// to an undefined value.
+	InEdgeIt() {}
+	/// Initialize the iterator to be invalid
+	InEdgeIt(Invalid) {}
+	InEdgeIt(const StaticGraphSkeleton &, Node) {}    
+      };
+      //  class SymEdgeIt : public Edge {};
+
+      /// This iterator goes through each edge.
+
+      /// This iterator goes through each edge of a graph.
+      /// Its usage is quite simple, for example you can count the number
+      /// of edges in a graph \c G of type \c Graph as follows:
+      /// \code
+      ///int count=0;
+      ///for(Graph::EdgeIt e(G);G.valid(e);G.next(e)) count++;
+      /// \endcode
+      class EdgeIt : public Edge {
+      public:
+	/// @warning The default constructor sets the iterator
+	/// to an undefined value.
+	EdgeIt() {}
+	/// Initialize the iterator to be invalid
+	EdgeIt(Invalid) {}
+	EdgeIt(const StaticGraphSkeleton &) {}
+      };
 
-    class InEdgeIt : public Edge {
-    public:
-      /// @warning The default constructor sets the iterator
-      /// to an undefined value.
-      InEdgeIt() {}
-      /// Initialize the iterator to be invalid
-      InEdgeIt(Invalid) {}
-      InEdgeIt(const GraphSkeleton &, Node) {}    
-    };
-    //  class SymEdgeIt : public Edge {};
+      /// First node of the graph.
 
-    /// This iterator goes through each edge.
+      /// \retval i the first node.
+      /// \return the first node.
+      ///
+      NodeIt &first(NodeIt &i) const { return i;}
 
-    /// This iterator goes through each edge of a graph.
-    /// Its usage is quite simple, for example you can count the number
-    /// of edges in a graph \c G of type \c Graph as follows:
-    /// \code
-    ///int count=0;
-    ///for(Graph::EdgeIt e(G);G.valid(e);G.next(e)) count++;
-    /// \endcode
-    class EdgeIt : public Edge {
-    public:
-      /// @warning The default constructor sets the iterator
-      /// to an undefined value.
-      EdgeIt() {}
-      /// Initialize the iterator to be invalid
-      EdgeIt(Invalid) {}
-      EdgeIt(const GraphSkeleton &) {}
-    };
+      /// The first incoming edge.
+      InEdgeIt &first(InEdgeIt &i, Node) const { return i;}
+      /// The first outgoing edge.
+      OutEdgeIt &first(OutEdgeIt &i, Node) const { return i;}
+      //  SymEdgeIt &first(SymEdgeIt &, Node) const { return i;}
+      /// The first edge of the Graph.
+      EdgeIt &first(EdgeIt &i) const { return i;}
+
+      //     Node getNext(Node) const {}
+      //     InEdgeIt getNext(InEdgeIt) const {}
+      //     OutEdgeIt getNext(OutEdgeIt) const {}
+      //     //SymEdgeIt getNext(SymEdgeIt) const {}
+      //     EdgeIt getNext(EdgeIt) const {}
+
+      /// Go to the next node.
+      NodeIt &next(NodeIt &i) const { return i;}
+      /// Go to the next incoming edge.
+      InEdgeIt &next(InEdgeIt &i) const { return i;}
+      /// Go to the next outgoing edge.
+      OutEdgeIt &next(OutEdgeIt &i) const { return i;}
+      //SymEdgeIt &next(SymEdgeIt &) const {}
+      /// Go to the next edge.
+      EdgeIt &next(EdgeIt &i) const { return i;}
+
+      ///Gives back the head node of an edge.
+      Node head(Edge) const { return INVALID; }
+      ///Gives back the tail node of an edge.
+      Node tail(Edge) const { return INVALID; }
+  
+      //   Node aNode(InEdgeIt) const {}
+      //   Node aNode(OutEdgeIt) const {}
+      //   Node aNode(SymEdgeIt) const {}
 
-    /// First node of the graph.
+      //   Node bNode(InEdgeIt) const {}
+      //   Node bNode(OutEdgeIt) const {}
+      //   Node bNode(SymEdgeIt) const {}
 
-    /// \retval i the first node.
-    /// \return the first node.
-    ///
-    NodeIt &first(NodeIt &i) const { return i;}
+      /// Checks if a node iterator is valid
 
-    /// The first incoming edge.
-    InEdgeIt &first(InEdgeIt &i, Node) const { return i;}
-    /// The first outgoing edge.
-    OutEdgeIt &first(OutEdgeIt &i, Node) const { return i;}
-    //  SymEdgeIt &first(SymEdgeIt &, Node) const { return i;}
-    /// The first edge of the Graph.
-    EdgeIt &first(EdgeIt &i) const { return i;}
-
-//     Node getNext(Node) const {}
-//     InEdgeIt getNext(InEdgeIt) const {}
-//     OutEdgeIt getNext(OutEdgeIt) const {}
-//     //SymEdgeIt getNext(SymEdgeIt) const {}
-//     EdgeIt getNext(EdgeIt) const {}
-
-    /// Go to the next node.
-    NodeIt &next(NodeIt &i) const { return i;}
-    /// Go to the next incoming edge.
-    InEdgeIt &next(InEdgeIt &i) const { return i;}
-    /// Go to the next outgoing edge.
-    OutEdgeIt &next(OutEdgeIt &i) const { return i;}
-    //SymEdgeIt &next(SymEdgeIt &) const {}
-    /// Go to the next edge.
-    EdgeIt &next(EdgeIt &i) const { return i;}
-
-    ///Gives back the head node of an edge.
-    Node head(Edge) const { return INVALID; }
-    ///Gives back the tail node of an edge.
-    Node tail(Edge) const { return INVALID; }
-  
-    //   Node aNode(InEdgeIt) const {}
-    //   Node aNode(OutEdgeIt) const {}
-    //   Node aNode(SymEdgeIt) const {}
+      ///\todo Maybe, it would be better if iterator converted to
+      ///bool directly, as Jacint prefers.
+      bool valid(const Node&) const { return true;}
+      /// Checks if an edge iterator is valid
 
-    //   Node bNode(InEdgeIt) const {}
-    //   Node bNode(OutEdgeIt) const {}
-    //   Node bNode(SymEdgeIt) const {}
+      ///\todo Maybe, it would be better if iterator converted to
+      ///bool directly, as Jacint prefers.
+      bool valid(const Edge&) const { return true;}
 
-    /// Checks if a node iterator is valid
+      ///Gives back the \e id of a node.
 
-    ///\todo Maybe, it would be better if iterator converted to
-    ///bool directly, as Jacint prefers.
-    bool valid(const Node&) const { return true;}
-    /// Checks if an edge iterator is valid
+      ///\warning Not all graph structures provide this feature.
+      ///
+      int id(const Node&) const { return 0;}
+      ///Gives back the \e id of an edge.
 
-    ///\todo Maybe, it would be better if iterator converted to
-    ///bool directly, as Jacint prefers.
-    bool valid(const Edge&) const { return true;}
+      ///\warning Not all graph structures provide this feature.
+      ///
+      int id(const Edge&) const { return 0;}
 
-    ///Gives back the \e id of a node.
+      /// Resets the graph.
 
-    ///\warning Not all graph structures provide this feature.
-    ///
-    int id(const Node&) const { return 0;}
-    ///Gives back the \e id of an edge.
+      /// This function deletes all edges and nodes of the graph.
+      /// It also frees the memory allocated to store them.
+      void clear() {}
 
-    ///\warning Not all graph structures provide this feature.
-    ///
-    int id(const Edge&) const { return 0;}
+      int nodeNum() const { return 0;}
+      int edgeNum() const { return 0;}
 
-    //void setInvalid(Node &) const {};
-    //void setInvalid(Edge &) const {};
-  
-    ///Add a new node to the graph.
 
-    /// \return the new node.
-    ///
-    Node addNode() { return INVALID;}
-    ///Add a new edge to the graph.
 
-    ///Add a new edge to the graph with tail node \c tail
-    ///and head node \c head.
-    ///\return the new edge.
-    Edge addEdge(Node, Node) { return INVALID;}
-    
-    /// Resets the graph.
+      ///Reference map of the nodes to type \c T.
 
-    /// This function deletes all edges and nodes of the graph.
-    /// It also frees the memory allocated to store them.
-    void clear() {}
-
-    int nodeNum() const { return 0;}
-    int edgeNum() const { return 0;}
-
-    ///Read/write/reference map of the nodes to type \c T.
-
-    ///Read/write/reference map of the nodes to type \c T.
-    /// \sa MemoryMapSkeleton
-    /// \todo We may need copy constructor
-    /// \todo We may need conversion from other nodetype
-    /// \todo We may need operator=
-    /// \warning Making maps that can handle bool type (NodeMap<bool>)
-    /// needs extra attention!
+      ///Reference map of the nodes to type \c T.
+      /// \sa ReferenceSkeleton
+      /// \warning Making maps that can handle bool type (NodeMap<bool>)
+      /// needs extra attention!
 
-    template<class T> class NodeMap
-    {
-    public:
-      typedef T ValueType;
-      typedef Node KeyType;
+      template<class T> class NodeMap
+	: public ReferenceMap< Node, T >
+      {
+      public:
 
-      NodeMap(const GraphSkeleton &) {}
-      NodeMap(const GraphSkeleton &, T) {}
+	class ReferenceMap<Node,T>;
 
-      template<typename TT> NodeMap(const NodeMap<TT> &) {}
+	NodeMap(const StaticGraphSkeleton &) {}
+	NodeMap(const StaticGraphSkeleton &, T) {}
 
-      /// Sets the value of a node.
+	///Copy constructor
+	template<typename TT> NodeMap(const NodeMap<TT> &) {}
+	///Assignment operator
+	template<typename TT> NodeMap &operator=(const NodeMap<TT> &)
+	{return *this;}
+      };
 
-      /// Sets the value associated with node \c i to the value \c t.
-      ///
-      void set(Node, T) {}
-      // Gets the value of a node.
-      //T get(Node i) const {return *(T*)0;}  //FIXME: Is it necessary?
-      T &operator[](Node) {return *(T*)0;}
-      const T &operator[](Node) const {return *(T*)0;}
+      ///Reference map of the edges to type \c T.
 
-      /// Updates the map if the graph has been changed
+      ///Reference map of the edges to type \c T.
+      /// \sa ReferenceSkeleton
+      /// \warning Making maps that can handle bool type (EdgeMap<bool>)
+      /// needs extra attention!
+      template<class T> class EdgeMap
+	: public ReferenceMap<Edge,T>
+      {
+      public:
+	typedef T ValueType;
+	typedef Edge KeyType;
 
-      /// \todo Do we need this?
-      ///
-      void update() {}
-      void update(T a) {}   //FIXME: Is it necessary
+	EdgeMap(const StaticGraphSkeleton &) {}
+	EdgeMap(const StaticGraphSkeleton &, T ) {}
+    
+	///Copy constructor
+	template<typename TT> EdgeMap(const EdgeMap<TT> &) {}
+	///Assignment operator
+	template<typename TT> EdgeMap &operator=(const EdgeMap<TT> &)
+	{return *this;}
+      };
     };
 
-    ///Read/write/reference map of the edges to type \c T.
 
-    ///Read/write/reference map of the edges to type \c T.
-    ///It behaves exactly in the same way as \ref NodeMap.
-    /// \sa NodeMap
-    /// \sa MemoryMapSkeleton
-    /// \todo We may need copy constructor
-    /// \todo We may need conversion from other edgetype
-    /// \todo We may need operator=
-    template<class T> class EdgeMap
+  
+    /// An empty graph class.
+
+    /// This class provides everything that \c StaticGraphSkeleton
+    /// with additional functionality which enables to build a
+    /// graph from scratch.
+    class GraphSkeleton : public StaticGraphSkeleton
     {
     public:
-      typedef T ValueType;
-      typedef Edge KeyType;
+      /// Defalult constructor.
+      GraphSkeleton() {}
+      ///Copy consructor.
 
-      EdgeMap(const GraphSkeleton &) {}
-      EdgeMap(const GraphSkeleton &, T ) {}
-    
-      ///\todo It can copy between different types.
+      ///\todo It is not clear, what we expect from a copy constructor.
+      ///E.g. How to assign the nodes/edges to each other? What about maps?
+      GraphSkeleton(const GraphSkeleton &G) {}
+
+      ///Add a new node to the graph.
+
+      /// \return the new node.
       ///
-      template<typename TT> EdgeMap(const EdgeMap<TT> &) {}
+      Node addNode() { return INVALID;}
+      ///Add a new edge to the graph.
 
-      void set(Edge, T) {}
-      //T get(Edge) const {return *(T*)0;}
-      T &operator[](Edge) {return *(T*)0;}
-      const T &operator[](Edge) const {return *(T*)0;}
+      ///Add a new edge to the graph with tail node \c tail
+      ///and head node \c head.
+      ///\return the new edge.
+      Edge addEdge(Node, Node) { return INVALID;}
     
-      void update() {}
-      void update(T a) {}   //FIXME: Is it necessary
+      /// Resets the graph.
+
+      /// This function deletes all edges and nodes of the graph.
+      /// It also frees the memory allocated to store them.
+      /// \todo It might belong to \c EraseableGraphSkeleton.
+      void clear() {}
     };
-  };
 
-  /// An empty eraseable graph class.
+    /// An empty eraseable graph class.
   
-  /// This class provides all the common features of an \e eraseable graph
-  /// structure,
-  /// however completely without implementations and real data structures
-  /// behind the interface.
-  /// All graph algorithms should compile with this class, but it will not
-  /// run properly, of course.
-  ///
-  /// \todo This blabla could be replaced by a sepatate description about
-  /// Skeletons.
-  ///
-  /// It can be used for checking the interface compatibility,
-  /// or it can serve as a skeleton of a new graph structure.
-  /// 
-  /// Also, you will find here the full documentation of a certain graph
-  /// feature, the documentation of a real graph imlementation
-  /// like @ref ListGraph or
-  /// @ref SmartGraph will just refer to this structure.
-  class EraseableGraphSkeleton : public GraphSkeleton
-  {
-  public:
-    /// Deletes a node.
-    void erase(Node n) {}
-    /// Deletes an edge.
-    void erase(Edge e) {}
-
-    /// Defalult constructor.
-    EraseableGraphSkeleton() {}
-    ///Copy consructor.
-    EraseableGraphSkeleton(const GraphSkeleton &G) {}
-  };
+    /// This class is an extension of \c GraphSkeleton. It also makes it
+    /// possible to erase edges or nodes.
+    class EraseableGraphSkeleton : public GraphSkeleton
+    {
+    public:
+      /// Deletes a node.
+      void erase(Node n) {}
+      /// Deletes an edge.
+      void erase(Edge e) {}
+
+      /// Defalult constructor.
+      EraseableGraphSkeleton() {}
+      ///Copy consructor.
+      EraseableGraphSkeleton(const GraphSkeleton &G) {}
+    };
 
+    // @}
+  } //namespace skeleton
   
-  // @}
-
 } //namespace hugo
 
 

Modified: hugo/trunk/src/hugo/skeletons/maps.h
==============================================================================
--- hugo/trunk/src/hugo/skeletons/maps.h	(original)
+++ hugo/trunk/src/hugo/skeletons/maps.h	Thu Jul 22 21:59:18 2004
@@ -12,7 +12,7 @@
   
     /// Readable map concept
     template<typename K, typename T>
-    class ReadableMap
+    class ReadMap
     {
     public:
       /// Map's key type.
@@ -23,18 +23,14 @@
       /// Returns the value associated with a key.
       ValueType operator[](const KeyType &k) const {return ValueType();}
 
-      /// Copy contsructor. (optional)
-      ReadableMap(const ReadableMap&) {}
-      /// Assignment operator. (optional)
-      ReadableMap& operator=(const ReadableMap&) {return *this;}
-
-      ReadableMap() {}
+      ///Default constructor
+      ReadMap() {}
     };
 
 
     /// Writable map concept
     template<typename K, typename T>
-    class WritableMap
+    class WriteMap
     {
     public:
       /// Map's key type.
@@ -45,13 +41,14 @@
       /// Sets the value associated with a key.
       void set(const KeyType &k,const ValueType &t) {}
 
-      WritableMap() {}
+      ///Default constructor
+      WriteMap() {}
     };
 
     ///Read/Writeable map concept
     template<typename K, typename T>
-    class ReadWritableMap : public ReadableMap<K,T>,
-			    public WritableMap<K,T>
+    class ReadWriteMap : public ReadMap<K,T>,
+			    public WriteMap<K,T>
     {
     public:
       /// Map's key type.
@@ -64,67 +61,39 @@
       /// Sets the value associated with a key.
       void set(const KeyType &k,const ValueType &t) {}
 
-      /// Copy contsructor. (optional)
-      ReadWritableMap(const ReadWritableMap&) {}
-      /// Assignment operator. (optional)
-      ReadWritableMap& operator=(const ReadWritableMap&) {return *this;}
-
-      /// Facility to define a map with an other value type (optional)
-      template<typename T1>
-      struct rebind {
-	/// The type of a map with the given value type
-	typedef ReadWritableMap<K,T1> other;
-      };
-      /// @brief Constructor that copies all keys from the other map and
-      /// assigns to them a default value (optional)
-      template<typename T1>
-      ReadWritableMap(const ReadWritableMap<K,T1> &map, const ValueType &v) {}
-
-      ReadWritableMap() {}
+      ///Default constructor
+      ReadWriteMap() {}
     };
   
   
     ///Dereferable map concept
     template<typename K, typename T>
-    class DereferableMap : public ReadWritableMap<K,T>
+    class ReferenceMap : public ReadWriteMap<K,T>
     {
     public:
       /// Map's key type.
       typedef K KeyType;    
       /// Map's value type. (The type of objects associated with the keys).
       typedef T ValueType;
-      /// Map's reference type. (Reference to an object associated with a key)
+
+    protected:
+      ValueType tmp;
+    public:
       typedef ValueType& ReferenceType;
       /// Map's const reference type.
       typedef const ValueType& ConstReferenceType;
 
       ///Returns a reference to the value associated to a key.
-      ReferenceType operator[](const KeyType &i);
+      ReferenceType operator[](const KeyType &i) { return tmp; }
       ///Returns a const reference to the value associated to a key.
-      ConstReferenceType operator[](const KeyType &i) const;
+      ConstReferenceType operator[](const KeyType &i) const
+      { return tmp; }
       /// Sets the value associated with a key.
       void set(const KeyType &k,const ValueType &t) { operator[](k)=t; }
 
-      /// Copy contsructor. (optional)
-      DereferableMap(const DereferableMap&) {}
-      /// Assignment operator. (optional)
-      DereferableMap& operator=(const DereferableMap&) {return *this;}
-
-      /// Facility to define a map with an other value type (optional)
-      template<typename T1>
-      struct rebind {
-	/// The type of a map with the given value type
-	typedef DereferableMap<K,T1> other;
-      };
-      /// @brief Constructor that copies all keys from the other map and
-      /// assigns to them a default value (optional)
-      template<typename T1>
-      DereferableMap(const DereferableMap<K,T1> &map, const ValueType &v) {}
-
-      DereferableMap() {}
+      ///Default constructor
+      ReferenceMap() {}
     };
-
-
-  }
-}
+  } //namespace skeleton
+} //namespace hugo
 #endif // HUGO_MAPSKELETON_H



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