diff -r 2d6c8075d9d0 -r 818510fa3d99 src/hugo/smart_graph.h
--- a/src/hugo/smart_graph.h	Wed Sep 29 14:12:26 2004 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,364 +0,0 @@
-/* -*- C++ -*-
- * src/hugo/smart_graph.h - Part of HUGOlib, a generic C++ optimization library
- *
- * Copyright (C) 2004 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
- * (Egervary Combinatorial Optimization Research Group, 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 HUGO_SMART_GRAPH_H
-#define HUGO_SMART_GRAPH_H
-
-///\ingroup graphs
-///\file
-///\brief SmartGraph and SymSmartGraph classes.
-
-#include <vector>
-#include <climits>
-
-#include <hugo/invalid.h>
-
-#include <hugo/array_map.h>
-#include <hugo/sym_map.h>
-
-#include <hugo/map_registry.h>
-
-#include <hugo/map_defines.h>
-
-namespace hugo {
-
-/// \addtogroup graphs
-/// @{
-//  class SymSmartGraph;
-
-  ///A smart graph class.
-
-  ///This is a simple and fast graph implementation.
-  ///It is also quite memory efficient, but at the price
-  ///that <b> it does not support node and edge deletion</b>.
-  ///It conforms to 
-  ///the \ref skeleton::ExtendableGraph "ExtendableGraph" concept.
-  ///\sa skeleton::ExtendableGraph.
-  ///
-  ///\todo Some member functions could be \c static.
-  ///
-  ///\todo A possibly useful functionality: a function saveState() would
-  ///give back a data sturcture X and then the function restoreState(X)
-  ///would remove the nodes and edges added after the call of saveState().
-  ///Of course it should be used as a stack. (Maybe X is not necessary.)
-  ///
-  ///\author Alpar Juttner
-  class SmartGraph {
-
-    struct NodeT 
-    {
-      int first_in,first_out;      
-      NodeT() : first_in(-1), first_out(-1) {}
-    };
-    struct EdgeT 
-    {
-      int head, tail, next_in, next_out;      
-      //FIXME: is this necessary?
-      EdgeT() : next_in(-1), next_out(-1) {}  
-    };
-
-    std::vector<NodeT> nodes;
-
-    std::vector<EdgeT> edges;
-    
-    
-  public:
-
-    typedef SmartGraph Graph;
-
-    class Node;
-    class Edge;
-
-    class NodeIt;
-    class EdgeIt;
-    class OutEdgeIt;
-    class InEdgeIt;
-    
-    // Create map registries.
-    CREATE_MAP_REGISTRIES;
-    // Create node and edge maps.
-    CREATE_MAPS(ArrayMap);
-    
-  public:
-
-    SmartGraph() : nodes(), edges() { }
-    SmartGraph(const SmartGraph &_g) : nodes(_g.nodes), edges(_g.edges) { }
-    
-    ///Number of nodes.
-    int nodeNum() const { return nodes.size(); }
-    ///Number of edges.
-    int edgeNum() const { return edges.size(); }
-
-    /// Maximum node ID.
-    
-    /// Maximum node ID.
-    ///\sa id(Node)
-    int maxNodeId() const { return nodes.size()-1; }
-    /// Maximum edge ID.
-    
-    /// Maximum edge ID.
-    ///\sa id(Edge)
-    int maxEdgeId() const { return edges.size()-1; }
-
-    Node tail(Edge e) const { return edges[e.n].tail; }
-    Node head(Edge e) const { return edges[e.n].head; }
-
-    NodeIt& first(NodeIt& v) const { 
-      v=NodeIt(*this); return v; }
-    EdgeIt& first(EdgeIt& e) const { 
-      e=EdgeIt(*this); return e; }
-    OutEdgeIt& first(OutEdgeIt& e, const Node v) const { 
-      e=OutEdgeIt(*this,v); return e; }
-    InEdgeIt& first(InEdgeIt& e, const Node v) const { 
-      e=InEdgeIt(*this,v); return e; }
-
-    /// Node ID.
-    
-    /// The ID of a valid Node is a nonnegative integer not greater than
-    /// \ref maxNodeId(). The range of the ID's is not surely continuous
-    /// and the greatest node ID can be actually less then \ref maxNodeId().
-    ///
-    /// The ID of the \ref INVALID node is -1.
-    ///\return The ID of the node \c v. 
-    static int id(Node v) { return v.n; }
-    /// Edge ID.
-    
-    /// The ID of a valid Edge is a nonnegative integer not greater than
-    /// \ref maxEdgeId(). The range of the ID's is not surely continuous
-    /// and the greatest edge ID can be actually less then \ref maxEdgeId().
-    ///
-    /// The ID of the \ref INVALID edge is -1.
-    ///\return The ID of the edge \c e. 
-    static int id(Edge e) { return e.n; }
-
-    Node addNode() {
-      Node n; n.n=nodes.size();
-      nodes.push_back(NodeT()); //FIXME: Hmmm...
-
-      
-      node_maps.add(n);
-      return n;
-    }
-    
-    Edge addEdge(Node u, Node v) {
-      Edge e; e.n=edges.size(); edges.push_back(EdgeT()); //FIXME: Hmmm...
-      edges[e.n].tail=u.n; edges[e.n].head=v.n;
-      edges[e.n].next_out=nodes[u.n].first_out;
-      edges[e.n].next_in=nodes[v.n].first_in;
-      nodes[u.n].first_out=nodes[v.n].first_in=e.n;
-
-      edge_maps.add(e);
-
-      return e;
-    }
-
-    /// Finds an edge between two nodes.
-
-    /// Finds an edge from node \c u to node \c v.
-    ///
-    /// If \c prev is \ref INVALID (this is the default value), then
-    /// It finds the first edge from \c u to \c v. Otherwise it looks for
-    /// the next edge from \c u to \c v after \c prev.
-    /// \return The found edge or INVALID if there is no such an edge.
-    Edge findEdge(Node u,Node v, Edge prev = INVALID) 
-    {
-      int e = (prev.n==-1)? nodes[u.n].first_out : edges[prev.n].next_out;
-      while(e!=-1 && edges[e].tail!=v.n) e = edges[e].next_out;
-      prev.n=e;
-      return prev;
-    }
-    
-    void clear() {
-      edge_maps.clear();
-      edges.clear();
-      node_maps.clear();
-      nodes.clear();
-    }
-
-    class Node {
-      friend class SmartGraph;
-      template <typename T> friend class NodeMap;
-      
-      friend class Edge;
-      friend class OutEdgeIt;
-      friend class InEdgeIt;
-      friend class SymEdge;
-
-    protected:
-      int n;
-      friend int SmartGraph::id(Node v); 
-      Node(int nn) {n=nn;}
-    public:
-      Node() {}
-      Node (Invalid) { n=-1; }
-      bool operator==(const Node i) const {return n==i.n;}
-      bool operator!=(const Node i) const {return n!=i.n;}
-      bool operator<(const Node i) const {return n<i.n;}
-      //      ///Validity check
-      //      operator bool() { return n!=-1; }
-    };
-    
-    class NodeIt : public Node {
-      const SmartGraph *G;
-      friend class SmartGraph;
-    public:
-      NodeIt() : Node() { }
-      NodeIt(const SmartGraph& _G,Node n) : Node(n), G(&_G) { }
-      NodeIt(Invalid i) : Node(i) { }
-      NodeIt(const SmartGraph& _G) : Node(_G.nodes.size()?0:-1), G(&_G) { }
-      NodeIt &operator++() {
-	n=(n+2)%(G->nodes.size()+1)-1; 
-	return *this; 
-      }
-//       ///Validity check
-//       operator bool() { return Node::operator bool(); }      
-    };
-
-    class Edge {
-      friend class SmartGraph;
-      template <typename T> friend class EdgeMap;
-
-      friend class SymSmartGraph;
-      
-      friend class Node;
-      friend class NodeIt;
-    protected:
-      int n;
-      friend int SmartGraph::id(Edge e);
-      Edge(int nn) {n=nn;}
-    public:
-      /// An Edge with id \c n.
-
-      Edge() { }
-      Edge (Invalid) { n=-1; }
-      bool operator==(const Edge i) const {return n==i.n;}
-      bool operator!=(const Edge i) const {return n!=i.n;}
-      bool operator<(const Edge i) const {return n<i.n;}
-//       ///Validity check
-//       operator bool() { return n!=-1; }
-
-      ///Set the edge to that have ID \c ID.
-      void setToId(int id) { n=id; }
-   };
-    
-    class EdgeIt : public Edge {
-      const SmartGraph *G;
-      friend class SmartGraph;
-    public:
-      EdgeIt(const SmartGraph& _G) : Edge(_G.edges.size()-1), G(&_G) { }
-      EdgeIt(const SmartGraph& _G, Edge e) : Edge(e), G(&_G) { }
-      EdgeIt (Invalid i) : Edge(i) { }
-      EdgeIt() : Edge() { }
-      EdgeIt &operator++() { --n; return *this; }
-//       ///Validity check
-//       operator bool() { return Edge::operator bool(); }      
-    };
-    
-    class OutEdgeIt : public Edge {
-      const SmartGraph *G;
-      friend class SmartGraph;
-    public: 
-      OutEdgeIt() : Edge() { }
-      OutEdgeIt(const SmartGraph& _G, Edge e) : Edge(e), G(&_G) { }
-      OutEdgeIt (Invalid i) : Edge(i) { }
-
-      OutEdgeIt(const SmartGraph& _G,const Node v)
-	: Edge(_G.nodes[v.n].first_out), G(&_G) {}
-      OutEdgeIt &operator++() { n=G->edges[n].next_out; return *this; }
-//       ///Validity check
-//       operator bool() { return Edge::operator bool(); }      
-    };
-    
-    class InEdgeIt : public Edge {
-      const SmartGraph *G;
-      friend class SmartGraph;
-    public: 
-      InEdgeIt() : Edge() { }
-      InEdgeIt(const SmartGraph& _G, Edge e) : Edge(e), G(&_G) { }
-      InEdgeIt (Invalid i) : Edge(i) { }
-      InEdgeIt(const SmartGraph& _G,Node v)
-	: Edge(_G.nodes[v.n].first_in), G(&_G) { }
-      InEdgeIt &operator++() { n=G->edges[n].next_in; return *this; }
-//       ///Validity check
-//       operator bool() { return Edge::operator bool(); }      
-    };
-
-  };
-
-  ///Graph for bidirectional edges.
-
-  ///The purpose of this graph structure is to handle graphs
-  ///having bidirectional edges. Here the function \c addEdge(u,v) adds a pair
-  ///of oppositely directed edges.
-  ///There is a new edge map type called
-  ///\ref SymSmartGraph::SymEdgeMap "SymEdgeMap"
-  ///that complements this
-  ///feature by
-  ///storing shared values for the edge pairs. The usual
-  ///\ref Graph::EdgeMap "EdgeMap"
-  ///can be used
-  ///as well.
-  ///
-  ///The oppositely directed edge can also be obtained easily
-  ///using \ref opposite.
-  ///\warning It shares the similarity with \ref SmartGraph that
-  ///it is not possible to delete edges or nodes from the graph.
-  //\sa SmartGraph.
-
-  class SymSmartGraph : public SmartGraph
-  {
-  public:
-    typedef SymSmartGraph Graph;
-
-    // Create symmetric map registry.
-    CREATE_SYM_EDGE_MAP_REGISTRY;
-    // Create symmetric edge map.
-    CREATE_SYM_EDGE_MAP(ArrayMap);
-
-
-    SymSmartGraph() : SmartGraph() { }
-    SymSmartGraph(const SmartGraph &_g) : SmartGraph(_g) { }
-    ///Adds a pair of oppositely directed edges to the graph.
-    Edge addEdge(Node u, Node v)
-    {
-      Edge e = SmartGraph::addEdge(u,v);
-      Edge f = SmartGraph::addEdge(v,u);
-      sym_edge_maps.add(e);
-      sym_edge_maps.add(f);
-      return e;
-    }
-
-    ///The oppositely directed edge.
-
-    ///Returns the oppositely directed
-    ///pair of the edge \c e.
-    static Edge opposite(Edge e)
-    {
-      Edge f;
-      f.n = e.n - 2*(e.n%2) + 1;
-      return f;
-    }
-    
-
-  };
-  
-  /// @}  
-} //namespace hugo
-
-
-
-
-#endif //HUGO_SMART_GRAPH_H