RhodeCode

 * 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_STATIC_GRAPH_H

#define LEMON_STATIC_GRAPH_H

///\ingroup graphs

///\file

///\brief StaticDigraph class.

#include <lemon/core.h>

#include <lemon/bits/graph_extender.h>

namespace lemon {

  class StaticDigraphBase {

  public:

    StaticDigraphBase() 

        node_first_out(NULL), node_first_in(NULL),

        arc_source(NULL), arc_target(NULL), 

        arc_next_in(NULL), arc_next_out(NULL) {}

    ~StaticDigraphBase() {

        delete[] node_first_out;

        delete[] node_first_in;

        delete[] arc_source;

        delete[] arc_target;

        delete[] arc_next_out;

        delete[] arc_next_in;

      }

    }

    class Node {

      friend class StaticDigraphBase;

    protected:

      int id;

      Node(int _id) : id(_id) {}

    public:

      Node() {}

      Node (Invalid) : id(-1) {}

      bool operator==(const Node& node) const { return id == node.id; }

      bool operator!=(const Node& node) const { return id != node.id; }

      bool operator<(const Node& node) const { return id < node.id; }

    };

    class Arc {

      friend class StaticDigraphBase;      

    int arcNum() const { return arc_num; }

  private:

    template <typename Digraph, typename NodeRefMap>

    class ArcLess {

    public:

      typedef typename Digraph::Arc Arc;

      ArcLess(const Digraph &_graph, const NodeRefMap& _nodeRef) 

        : digraph(_graph), nodeRef(_nodeRef) {}

      bool operator()(const Arc& left, const Arc& right) const {

	return nodeRef[digraph.target(left)] < nodeRef[digraph.target(right)];

      }

    private:

      const Digraph& digraph;

      const NodeRefMap& nodeRef;

    };

  public:

    typedef True BuildTag;

        delete[] node_first_out;

        delete[] node_first_in;

        delete[] arc_source;

        delete[] arc_target;

        delete[] arc_next_out;

        delete[] arc_next_in;

      }

      typedef typename Digraph::Node GNode;

      typedef typename Digraph::Arc GArc;

      node_num = countNodes(digraph);

      arc_num = countArcs(digraph);

      node_first_out = new int[node_num + 1];

      node_first_in = new int[node_num];

      arc_source = new int[arc_num];

      arc_target = new int[arc_num];

      arc_next_out = new int[arc_num];

      arc_next_in = new int[arc_num];

      int node_index = 0;

      for (typename Digraph::NodeIt n(digraph); n != INVALID; ++n) {

        nodeRef[n] = Node(node_index);

        node_first_in[node_index] = -1;

        ++node_index;

      }

      ArcLess<Digraph, NodeRefMap> arcLess(digraph, nodeRef);

      int arc_index = 0;

      for (typename Digraph::NodeIt n(digraph); n != INVALID; ++n) {

        int source = nodeRef[n].id;

        std::vector<GArc> arcs;

            arc_next_out[arc_index] = arc_index + 1;

            ++arc_index;

          }

          arc_next_out[arc_index - 1] = -1;

        } else {

          node_first_out[source] = arc_index;

        }

      }

      node_first_out[node_num] = arc_num;

    }

  protected:

    void fastFirstOut(Arc& e, const Node& n) const {

      e.id = node_first_out[n.id];

    }

    static void fastNextOut(Arc& e) {

      ++e.id;

    }

    void fastLastOut(Arc& e, const Node& n) const {

      e.id = node_first_out[n.id + 1];

    }

    int node_num;

    int arc_num;

    int *node_first_out;

    int *node_first_in;

    int *arc_source;

    int *arc_target;

    int *arc_next_in;

    int *arc_next_out;

  };

  typedef DigraphExtender<StaticDigraphBase> ExtendedStaticDigraphBase;

  class StaticDigraph : public ExtendedStaticDigraphBase {

  public:

    typedef ExtendedStaticDigraphBase Parent;

  protected:

    using Parent::fastFirstOut;

    using Parent::fastNextOut;

    using Parent::fastLastOut;

  public:

    class OutArcIt : public Arc {

    public:

      OutArcIt() { }

      OutArcIt(Invalid i) : Arc(i) { }

      OutArcIt(const StaticDigraph& digraph, const Node& node) {

	digraph.fastFirstOut(*this, node);

	digraph.fastLastOut(last, node);

        if (last == *this) *this = INVALID;

      }

      OutArcIt(const StaticDigraph& digraph, const Arc& arc) : Arc(arc) {

        if (arc != INVALID) {

          digraph.fastLastOut(last, digraph.source(arc));

        }

      }

      OutArcIt& operator++() { 

        StaticDigraph::fastNextOut(*this);

        if (last == *this) *this = INVALID;

        return *this; 

      }

    private:

      Arc last;

    };

  };

}

#endif

/* -*- mode: C++; indent-tabs-mode: nil; -*-

 *

 * This file is a part of LEMON, a generic C++ optimization library.

 *

 * Copyright (C) 2003-2009

 * 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.

 *

 */

#include <lemon/concepts/digraph.h>

#include <lemon/list_graph.h>

#include <lemon/smart_graph.h>

#include <lemon/full_graph.h>

#include "test_tools.h"

#include "graph_test.h"

using namespace lemon;

using namespace lemon::concepts;

template <class Digraph>

void checkDigraphBuild() {

  TEMPLATE_DIGRAPH_TYPEDEFS(Digraph);

  Digraph G;

  checkGraphNodeList(G, 0);

  checkGraphArcList(G, 0);

  Node

    n1 = G.addNode(),

    n2 = G.addNode(),

    n3 = G.addNode();

  checkGraphNodeList(G, 3);

  checkGraphArcList(G, 0);

  Arc a1 = G.addArc(n1, n2);

      IDableDigraphComponent<> >();

    checkConcept<IterableDigraphComponent<>,

      IterableDigraphComponent<> >();

    checkConcept<MappableDigraphComponent<>,

      MappableDigraphComponent<> >();

  }

  { // Checking skeleton digraph

    checkConcept<Digraph, Digraph>();

  }

  { // Checking ListDigraph

    checkConcept<Digraph, ListDigraph>();

    checkConcept<AlterableDigraphComponent<>, ListDigraph>();

    checkConcept<ExtendableDigraphComponent<>, ListDigraph>();

    checkConcept<ClearableDigraphComponent<>, ListDigraph>();

    checkConcept<ErasableDigraphComponent<>, ListDigraph>();

  }

  { // Checking SmartDigraph

    checkConcept<Digraph, SmartDigraph>();

    checkConcept<AlterableDigraphComponent<>, SmartDigraph>();

    checkConcept<ExtendableDigraphComponent<>, SmartDigraph>();

    checkConcept<ClearableDigraphComponent<>, SmartDigraph>();

  }

  { // Checking FullDigraph

    checkConcept<Digraph, FullDigraph>();

  }

}

template <typename Digraph>

void checkDigraphValidity() {

  TEMPLATE_DIGRAPH_TYPEDEFS(Digraph);

  Digraph g;

  Node

    n1 = g.addNode(),

    n2 = g.addNode(),

    n3 = g.addNode();

  Arc

    e1 = g.addArc(n1, n2),

    e2 = g.addArc(n2, n3);

  check(g.valid(n1), "Wrong validity check");

  check(g.valid(e1), "Wrong validity check");

  check(!g.valid(g.nodeFromId(-1)), "Wrong validity check");

  check(!g.valid(g.arcFromId(-1)), "Wrong validity check");

  Node

    n1 = g.addNode(),

    n2 = g.addNode(),

    n3 = g.addNode();

  Arc

    e1 = g.addArc(n1, n2),

    e2 = g.addArc(n2, n3);

  check(g.valid(n1), "Wrong validity check");

  check(g.valid(e1), "Wrong validity check");

  g.erase(n1);

  check(!g.valid(n1), "Wrong validity check");

  check(g.valid(n2), "Wrong validity check");

  check(g.valid(n3), "Wrong validity check");

  check(!g.valid(e1), "Wrong validity check");

  check(g.valid(e2), "Wrong validity check");

  check(!g.valid(g.nodeFromId(-1)), "Wrong validity check");

  check(!g.valid(g.arcFromId(-1)), "Wrong validity check");

}

void checkFullDigraph(int num) {

  typedef FullDigraph Digraph;

  DIGRAPH_TYPEDEFS(Digraph);

  Digraph G(num);

  checkGraphNodeList(G, num);

  checkGraphArcList(G, num * num);

  for (NodeIt n(G); n != INVALID; ++n) {

    checkGraphOutArcList(G, n, num);

    checkGraphInArcList(G, n, num);

  }

  checkGraphConArcList(G, num * num);

  checkNodeIds(G);

  checkArcIds(G);

  checkGraphNodeMap(G);

  checkGraphArcMap(G);

  for (int i = 0; i < G.nodeNum(); ++i) {

    check(G.index(G(i)) == i, "Wrong index");

  }

  for (NodeIt s(G); s != INVALID; ++s) {

    for (NodeIt t(G); t != INVALID; ++t) {

      Arc a = G.arc(s, t);

      check(G.source(a) == s && G.target(a) == t, "Wrong arc lookup");

    }

  }

}

void checkDigraphs() {

  { // Checking ListDigraph

    checkDigraphBuild<ListDigraph>();

    checkDigraphSplit<ListDigraph>();

    checkDigraphAlter<ListDigraph>();

    checkDigraphErase<ListDigraph>();

    checkDigraphSnapshot<ListDigraph>();

    checkDigraphValidityErase<ListDigraph>();

  }

  { // Checking SmartDigraph

    checkDigraphBuild<SmartDigraph>();

    checkDigraphSplit<SmartDigraph>();

    checkDigraphSnapshot<SmartDigraph>();

    checkDigraphValidity<SmartDigraph>();

  }

  { // Checking FullDigraph

    checkFullDigraph(8);

  }

}

int main() {

  checkDigraphs();

  checkConcepts();

  return 0;

}