LEMON/LEMON-official Changeset - r220:a5d8c039f218

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Changeset - r220:a5d8c039f218

« 217:b67149

221:64613d »

r220:a5d8c039f218

Tue, 15 Jul 2008 13:15:39

[Not Reviewed]

0 comments (0 inline)

deba@inf.elte.hu
deba@inf.elte.hu

Reorganize header files (Ticket #97) In addition on some places the DefaultMap<G, K, V> is replaced with ItemSetTraits<G, K>::template Map<V>::Type, to decrease the dependencies of different tools. It is obviously better solution.

3 31 2

default

36 files changed with 2937 insertions and 3005 deletions:

lemon/bits/enable_if.h

131

lemon/core.h

1851

demo/graph_to_eps_demo.cc

lemon/Makefile.am

lemon/base.cc

lemon/bfs.h

lemon/bits/alteration_notifier.h

lemon/bits/base_extender.h

lemon/bits/graph_extender.h

lemon/bits/traits.h

lemon/bits/vector_map.h

lemon/concepts/digraph.h

lemon/concepts/graph.h

lemon/concepts/graph_components.h

lemon/concepts/heap.h

lemon/concepts/maps.h

lemon/concepts/path.h

lemon/dfs.h

lemon/dijkstra.h

lemon/dim2.h

lemon/graph_to_eps.h

lemon/kruskal.h

lemon/lgf_reader.h

lemon/lgf_writer.h

lemon/list_graph.h

lemon/maps.h

921

lemon/path.h

lemon/smart_graph.h

lemon/unionfind.h

test/dijkstra_test.cc

test/graph_copy_test.cc

test/graph_test.h

test/graph_utils_test.cc

lemon/bits/invalid.h

lemon/bits/utility.h

140

lemon/graph_utils.h

2760

↑ Collapse diff ↑

lemon/bits/enable_if.h

Show inline comments

 		/* -*- mode: C++; indent-tabs-mode: nil; -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library.
+		 *
 		 * Copyright (C) 2003-2008
 		 * 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.
+		 *
 		 */
 		// This file contains a modified version of the enable_if library from BOOST.
 		// See the appropriate copyright notice below.
 		// Boost enable_if library
 		// Copyright 2003 (c) The Trustees of Indiana University.
 		// Use, modification, and distribution is subject to the Boost Software
 		// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
 		// http://www.boost.org/LICENSE_1_0.txt)
 		//    Authors: Jaakko Jarvi (jajarvi at osl.iu.edu)
 		//             Jeremiah Willcock (jewillco at osl.iu.edu)
 		//             Andrew Lumsdaine (lums at osl.iu.edu)
 		#ifndef LEMON_BITS_ENABLE_IF_H
 		#define LEMON_BITS_ENABLE_IF_H
 		///\file
 		///\brief Miscellaneous basic utilities
 		namespace lemon
+		{
 		  /// Basic type for defining "tags". A "YES" condition for \c enable_if.
 		  /// Basic type for defining "tags". A "YES" condition for \c enable_if.
 		  ///
 		  ///\sa False
 		  struct True {
 		    ///\e
 		    static const bool value = true;
 		  };
 		  /// Basic type for defining "tags". A "NO" condition for \c enable_if.
 		  /// Basic type for defining "tags". A "NO" condition for \c enable_if.
 		  ///
 		  ///\sa True
 		  struct False {
 		    ///\e
 		    static const bool value = false;
 		  };
 		  template <typename T>
 		  struct Wrap {
 		    const T &value;
 		    Wrap(const T &t) : value(t) {}
 		  };
 		  /**************** dummy class to avoid ambiguity ****************/
 		  template<int T> struct dummy { dummy(int) {} };
 		  /**************** enable_if from BOOST ****************/
 		  template <typename Type, typename T = void>
 		  struct exists {
 		    typedef T type;
 		  };
 		  template <bool B, class T = void>
 		  struct enable_if_c {
 		    typedef T type;
 		  };
 		  template <class T>
 		  struct enable_if_c<false, T> {};
 		  template <class Cond, class T = void>
 		  struct enable_if : public enable_if_c<Cond::value, T> {};
 		  template <bool B, class T>
 		  struct lazy_enable_if_c {
 		    typedef typename T::type type;
 		  };
 		  template <class T>
 		  struct lazy_enable_if_c<false, T> {};
 		  template <class Cond, class T>
 		  struct lazy_enable_if : public lazy_enable_if_c<Cond::value, T> {};
 		  template <bool B, class T = void>
 		  struct disable_if_c {
 		    typedef T type;
 		  };
 		  template <class T>
 		  struct disable_if_c<true, T> {};
 		  template <class Cond, class T = void>
 		  struct disable_if : public disable_if_c<Cond::value, T> {};
 		  template <bool B, class T>
 		  struct lazy_disable_if_c {
 		    typedef typename T::type type;
 		  };
 		  template <class T>
 		  struct lazy_disable_if_c<true, T> {};
 		  template <class Cond, class T>
 		  struct lazy_disable_if : public lazy_disable_if_c<Cond::value, T> {};
 		} // namespace lemon
 		#endif

lemon/core.h

Show inline comments

 		/* -*- mode: C++; indent-tabs-mode: nil; -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library.
+		 *
 		 * Copyright (C) 2003-2008
 		 * 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_CORE_H
 		#define LEMON_CORE_H
 		#include <vector>
 		#include <algorithm>
 		#include <lemon/bits/enable_if.h>
 		#include <lemon/bits/traits.h>
 		///\file
 		///\brief LEMON core utilities.
 		namespace lemon {
 		  /// \brief Dummy type to make it easier to create invalid iterators.
 		  ///
 		  /// Dummy type to make it easier to create invalid iterators.
 		  /// See \ref INVALID for the usage.
 		  struct Invalid {
 		  public:
 		    bool operator==(Invalid) { return true;  }
 		    bool operator!=(Invalid) { return false; }
 		    bool operator< (Invalid) { return false; }
 		  };
 		  /// \brief Invalid iterators.
 		  ///
 		  /// \ref Invalid is a global type that converts to each iterator
 		  /// in such a way that the value of the target iterator will be invalid.
 		#ifdef LEMON_ONLY_TEMPLATES
 		  const Invalid INVALID = Invalid();
 		#else
 		  extern const Invalid INVALID;
 		#endif
 		  /// \addtogroup gutils
 		  /// @{
 		  ///Creates convenience typedefs for the digraph types and iterators
 		  ///This \c \#define creates convenience typedefs for the following types
 		  ///of \c Digraph: \c Node,  \c NodeIt, \c Arc, \c ArcIt, \c InArcIt,
 		  ///\c OutArcIt, \c BoolNodeMap, \c IntNodeMap, \c DoubleNodeMap,
 		  ///\c BoolArcMap, \c IntArcMap, \c DoubleArcMap.
 		  ///
 		  ///\note If the graph type is a dependent type, ie. the graph type depend
 		  ///on a template parameter, then use \c TEMPLATE_DIGRAPH_TYPEDEFS()
 		  ///macro.
 		#define DIGRAPH_TYPEDEFS(Digraph)                                       \
 		  typedef Digraph::Node Node;                                           \
 		  typedef Digraph::NodeIt NodeIt;                                       \
 		  typedef Digraph::Arc Arc;                                             \
 		  typedef Digraph::ArcIt ArcIt;                                         \
 		  typedef Digraph::InArcIt InArcIt;                                     \
 		  typedef Digraph::OutArcIt OutArcIt;                                   \
 		  typedef Digraph::NodeMap<bool> BoolNodeMap;                           \
 		  typedef Digraph::NodeMap<int> IntNodeMap;                             \
 		  typedef Digraph::NodeMap<double> DoubleNodeMap;                       \
 		  typedef Digraph::ArcMap<bool> BoolArcMap;                             \
 		  typedef Digraph::ArcMap<int> IntArcMap;                               \
 		  typedef Digraph::ArcMap<double> DoubleArcMap
 		  ///Creates convenience typedefs for the digraph types and iterators
 		  ///\see DIGRAPH_TYPEDEFS
 		  ///
 		  ///\note Use this macro, if the graph type is a dependent type,
 		  ///ie. the graph type depend on a template parameter.
 		#define TEMPLATE_DIGRAPH_TYPEDEFS(Digraph)                              \
 		  typedef typename Digraph::Node Node;                                  \
 		  typedef typename Digraph::NodeIt NodeIt;                              \
 		  typedef typename Digraph::Arc Arc;                                    \
 		  typedef typename Digraph::ArcIt ArcIt;                                \
 		  typedef typename Digraph::InArcIt InArcIt;                            \
 		  typedef typename Digraph::OutArcIt OutArcIt;                          \
 		  typedef typename Digraph::template NodeMap<bool> BoolNodeMap;         \
 		  typedef typename Digraph::template NodeMap<int> IntNodeMap;           \
 		  typedef typename Digraph::template NodeMap<double> DoubleNodeMap;     \
 		  typedef typename Digraph::template ArcMap<bool> BoolArcMap;           \
 		  typedef typename Digraph::template ArcMap<int> IntArcMap;             \
 		  typedef typename Digraph::template ArcMap<double> DoubleArcMap
 		  ///Creates convenience typedefs for the graph types and iterators
 		  ///This \c \#define creates the same convenience typedefs as defined
 		  ///by \ref DIGRAPH_TYPEDEFS(Graph) and six more, namely it creates
 		  ///\c Edge, \c EdgeIt, \c IncEdgeIt, \c BoolEdgeMap, \c IntEdgeMap,
 		  ///\c DoubleEdgeMap.
 		  ///
 		  ///\note If the graph type is a dependent type, ie. the graph type depend
 		  ///on a template parameter, then use \c TEMPLATE_DIGRAPH_TYPEDEFS()
 		  ///macro.
 		#define GRAPH_TYPEDEFS(Graph)                                           \
 		  DIGRAPH_TYPEDEFS(Graph);                                              \
 		  typedef Graph::Edge Edge;                                             \
 		  typedef Graph::EdgeIt EdgeIt;                                         \
 		  typedef Graph::IncEdgeIt IncEdgeIt;                                   \
 		  typedef Graph::EdgeMap<bool> BoolEdgeMap;                             \
 		  typedef Graph::EdgeMap<int> IntEdgeMap;                               \
 		  typedef Graph::EdgeMap<double> DoubleEdgeMap
 		  ///Creates convenience typedefs for the graph types and iterators
 		  ///\see GRAPH_TYPEDEFS
 		  ///
 		  ///\note Use this macro, if the graph type is a dependent type,
 		  ///ie. the graph type depend on a template parameter.
 		#define TEMPLATE_GRAPH_TYPEDEFS(Graph)                                  \
 		  TEMPLATE_DIGRAPH_TYPEDEFS(Graph);                                     \
 		  typedef typename Graph::Edge Edge;                                    \
 		  typedef typename Graph::EdgeIt EdgeIt;                                \
 		  typedef typename Graph::IncEdgeIt IncEdgeIt;                          \
 		  typedef typename Graph::template EdgeMap<bool> BoolEdgeMap;           \
 		  typedef typename Graph::template EdgeMap<int> IntEdgeMap;             \
 		  typedef typename Graph::template EdgeMap<double> DoubleEdgeMap
 		  /// \brief Function to count the items in the graph.
 		  ///
 		  /// This function counts the items (nodes, arcs etc) in the graph.
 		  /// The complexity of the function is O(n) because
 		  /// it iterates on all of the items.
 		  template <typename Graph, typename Item>
 		  inline int countItems(const Graph& g) {
 		    typedef typename ItemSetTraits<Graph, Item>::ItemIt ItemIt;
 		    int num = 0;
 		    for (ItemIt it(g); it != INVALID; ++it) {
 		      ++num;
+		    }
 		    return num;
+		  }
 		  // Node counting:
 		  namespace _core_bits {
 		    template <typename Graph, typename Enable = void>
 		    struct CountNodesSelector {
 		      static int count(const Graph &g) {
 		        return countItems<Graph, typename Graph::Node>(g);
+		      }
 		    };
 		    template <typename Graph>
 		    struct CountNodesSelector<
 		      Graph, typename
 		      enable_if<typename Graph::NodeNumTag, void>::type>
+		    {
 		      static int count(const Graph &g) {
 		        return g.nodeNum();
+		      }
 		    };
+		  }
 		  /// \brief Function to count the nodes in the graph.
 		  ///
 		  /// This function counts the nodes in the graph.
 		  /// The complexity of the function is O(n) but for some
 		  /// graph structures it is specialized to run in O(1).
 		  ///
 		  /// If the graph contains a \e nodeNum() member function and a
 		  /// \e NodeNumTag tag then this function calls directly the member
 		  /// function to query the cardinality of the node set.
 		  template <typename Graph>
 		  inline int countNodes(const Graph& g) {
 		    return _core_bits::CountNodesSelector<Graph>::count(g);
+		  }
 		  // Arc counting:
 		  namespace _core_bits {
 		    template <typename Graph, typename Enable = void>
 		    struct CountArcsSelector {
 		      static int count(const Graph &g) {
 		        return countItems<Graph, typename Graph::Arc>(g);
+		      }
 		    };
 		    template <typename Graph>
 		    struct CountArcsSelector<
 		      Graph,
 		      typename enable_if<typename Graph::ArcNumTag, void>::type>
+		    {
 		      static int count(const Graph &g) {
 		        return g.arcNum();
+		      }
 		    };
+		  }
 		  /// \brief Function to count the arcs in the graph.
 		  ///
 		  /// This function counts the arcs in the graph.
 		  /// The complexity of the function is O(e) but for some
 		  /// graph structures it is specialized to run in O(1).
 		  ///
 		  /// If the graph contains a \e arcNum() member function and a
 		  /// \e EdgeNumTag tag then this function calls directly the member
 		  /// function to query the cardinality of the arc set.
 		  template <typename Graph>
 		  inline int countArcs(const Graph& g) {
 		    return _core_bits::CountArcsSelector<Graph>::count(g);
+		  }
 		  // Edge counting:
 		  namespace _core_bits {
 		    template <typename Graph, typename Enable = void>
 		    struct CountEdgesSelector {
 		      static int count(const Graph &g) {
 		        return countItems<Graph, typename Graph::Edge>(g);
+		      }
 		    };
 		    template <typename Graph>
 		    struct CountEdgesSelector<
 		      Graph,
 		      typename enable_if<typename Graph::EdgeNumTag, void>::type>
+		    {
 		      static int count(const Graph &g) {
 		        return g.edgeNum();
+		      }
 		    };
+		  }
 		  /// \brief Function to count the edges in the graph.
 		  ///
 		  /// This function counts the edges in the graph.
 		  /// The complexity of the function is O(m) but for some
 		  /// graph structures it is specialized to run in O(1).
 		  ///
 		  /// If the graph contains a \e edgeNum() member function and a
 		  /// \e EdgeNumTag tag then this function calls directly the member
 		  /// function to query the cardinality of the edge set.
 		  template <typename Graph>
 		  inline int countEdges(const Graph& g) {
 		    return _core_bits::CountEdgesSelector<Graph>::count(g);
+		  }
 		  template <typename Graph, typename DegIt>
 		  inline int countNodeDegree(const Graph& _g, const typename Graph::Node& _n) {
 		    int num = 0;
 		    for (DegIt it(_g, _n); it != INVALID; ++it) {
 		      ++num;
+		    }
 		    return num;
+		  }
 		  /// \brief Function to count the number of the out-arcs from node \c n.
 		  ///
 		  /// This function counts the number of the out-arcs from node \c n
 		  /// in the graph.
 		  template <typename Graph>
 		  inline int countOutArcs(const Graph& _g,  const typename Graph::Node& _n) {
 		    return countNodeDegree<Graph, typename Graph::OutArcIt>(_g, _n);
+		  }
 		  /// \brief Function to count the number of the in-arcs to node \c n.
 		  ///
 		  /// This function counts the number of the in-arcs to node \c n
 		  /// in the graph.
 		  template <typename Graph>
 		  inline int countInArcs(const Graph& _g,  const typename Graph::Node& _n) {
 		    return countNodeDegree<Graph, typename Graph::InArcIt>(_g, _n);
+		  }
 		  /// \brief Function to count the number of the inc-edges to node \c n.
 		  ///
 		  /// This function counts the number of the inc-edges to node \c n
 		  /// in the graph.
 		  template <typename Graph>
 		  inline int countIncEdges(const Graph& _g,  const typename Graph::Node& _n) {
 		    return countNodeDegree<Graph, typename Graph::IncEdgeIt>(_g, _n);
+		  }
 		  namespace _core_bits {
 		    template <typename Digraph, typename Item, typename RefMap>
 		    class MapCopyBase {
 		    public:
 		      virtual void copy(const Digraph& from, const RefMap& refMap) = 0;
 		      virtual ~MapCopyBase() {}
 		    };
 		    template <typename Digraph, typename Item, typename RefMap,
 		              typename ToMap, typename FromMap>
 		    class MapCopy : public MapCopyBase<Digraph, Item, RefMap> {
 		    public:
 		      MapCopy(ToMap& tmap, const FromMap& map)
 		        : _tmap(tmap), _map(map) {}
 		      virtual void copy(const Digraph& digraph, const RefMap& refMap) {
 		        typedef typename ItemSetTraits<Digraph, Item>::ItemIt ItemIt;
 		        for (ItemIt it(digraph); it != INVALID; ++it) {
 		          _tmap.set(refMap[it], _map[it]);
+		        }
+		      }
 		    private:
 		      ToMap& _tmap;
 		      const FromMap& _map;
 		    };
 		    template <typename Digraph, typename Item, typename RefMap, typename It>
 		    class ItemCopy : public MapCopyBase<Digraph, Item, RefMap> {
 		    public:
 		      ItemCopy(It& it, const Item& item) : _it(it), _item(item) {}
 		      virtual void copy(const Digraph&, const RefMap& refMap) {
 		        _it = refMap[_item];
+		      }
 		    private:
 		      It& _it;
 		      Item _item;
 		    };
 		    template <typename Digraph, typename Item, typename RefMap, typename Ref>
 		    class RefCopy : public MapCopyBase<Digraph, Item, RefMap> {
 		    public:
 		      RefCopy(Ref& map) : _map(map) {}
 		      virtual void copy(const Digraph& digraph, const RefMap& refMap) {
 		        typedef typename ItemSetTraits<Digraph, Item>::ItemIt ItemIt;
 		        for (ItemIt it(digraph); it != INVALID; ++it) {
 		          _map.set(it, refMap[it]);
+		        }
+		      }
 		    private:
 		      Ref& _map;
 		    };
 		    template <typename Digraph, typename Item, typename RefMap,
 		              typename CrossRef>
 		    class CrossRefCopy : public MapCopyBase<Digraph, Item, RefMap> {
 		    public:
 		      CrossRefCopy(CrossRef& cmap) : _cmap(cmap) {}
 		      virtual void copy(const Digraph& digraph, const RefMap& refMap) {
 		        typedef typename ItemSetTraits<Digraph, Item>::ItemIt ItemIt;
 		        for (ItemIt it(digraph); it != INVALID; ++it) {
 		          _cmap.set(refMap[it], it);
+		        }
+		      }
 		    private:
 		      CrossRef& _cmap;
 		    };
 		    template <typename Digraph, typename Enable = void>
 		    struct DigraphCopySelector {
 		      template <typename From, typename NodeRefMap, typename ArcRefMap>
 		      static void copy(Digraph &to, const From& from,
 		                       NodeRefMap& nodeRefMap, ArcRefMap& arcRefMap) {
 		        for (typename From::NodeIt it(from); it != INVALID; ++it) {
 		          nodeRefMap[it] = to.addNode();
+		        }
 		        for (typename From::ArcIt it(from); it != INVALID; ++it) {
 		          arcRefMap[it] = to.addArc(nodeRefMap[from.source(it)],
 		                                    nodeRefMap[from.target(it)]);
+		        }
+		      }
 		    };
 		    template <typename Digraph>
 		    struct DigraphCopySelector<
 		      Digraph,
 		      typename enable_if<typename Digraph::BuildTag, void>::type>
+		    {
 		      template <typename From, typename NodeRefMap, typename ArcRefMap>
 		      static void copy(Digraph &to, const From& from,
 		                       NodeRefMap& nodeRefMap, ArcRefMap& arcRefMap) {
 		        to.build(from, nodeRefMap, arcRefMap);
+		      }
 		    };
 		    template <typename Graph, typename Enable = void>
 		    struct GraphCopySelector {
 		      template <typename From, typename NodeRefMap, typename EdgeRefMap>
 		      static void copy(Graph &to, const From& from,
 		                       NodeRefMap& nodeRefMap, EdgeRefMap& edgeRefMap) {
 		        for (typename From::NodeIt it(from); it != INVALID; ++it) {
 		          nodeRefMap[it] = to.addNode();
+		        }
 		        for (typename From::EdgeIt it(from); it != INVALID; ++it) {
 		          edgeRefMap[it] = to.addEdge(nodeRefMap[from.u(it)],
 		                                      nodeRefMap[from.v(it)]);
+		        }
+		      }
 		    };
 		    template <typename Graph>
 		    struct GraphCopySelector<
 		      Graph,
 		      typename enable_if<typename Graph::BuildTag, void>::type>
+		    {
 		      template <typename From, typename NodeRefMap, typename EdgeRefMap>
 		      static void copy(Graph &to, const From& from,
 		                       NodeRefMap& nodeRefMap, EdgeRefMap& edgeRefMap) {
 		        to.build(from, nodeRefMap, edgeRefMap);
+		      }
 		    };
+		  }
 		  /// \brief Class to copy a digraph.
 		  ///
 		  /// Class to copy a digraph to another digraph (duplicate a digraph). The
 		  /// simplest way of using it is through the \c copyDigraph() function.
 		  ///
 		  /// This class not just make a copy of a graph, but it can create
 		  /// references and cross references between the nodes and arcs of
 		  /// the two graphs, it can copy maps for use with the newly created
 		  /// graph and copy nodes and arcs.
 		  ///
 		  /// To make a copy from a graph, first an instance of DigraphCopy
 		  /// should be created, then the data belongs to the graph should
 		  /// assigned to copy. In the end, the \c run() member should be
 		  /// called.
 		  ///
 		  /// The next code copies a graph with several data:
 		  ///\code
 		  ///  DigraphCopy<NewGraph, OrigGraph> dc(new_graph, orig_graph);
 		  ///  // create a reference for the nodes
 		  ///  OrigGraph::NodeMap<NewGraph::Node> nr(orig_graph);
 		  ///  dc.nodeRef(nr);
 		  ///  // create a cross reference (inverse) for the arcs
 		  ///  NewGraph::ArcMap<OrigGraph::Arc> acr(new_graph);
 		  ///  dc.arcCrossRef(acr);
 		  ///  // copy an arc map
 		  ///  OrigGraph::ArcMap<double> oamap(orig_graph);
 		  ///  NewGraph::ArcMap<double> namap(new_graph);
 		  ///  dc.arcMap(namap, oamap);
 		  ///  // copy a node
 		  ///  OrigGraph::Node on;
 		  ///  NewGraph::Node nn;
 		  ///  dc.node(nn, on);
 		  ///  // Executions of copy
 		  ///  dc.run();
 		  ///\endcode
 		  template <typename To, typename From>
 		  class DigraphCopy {
 		  private:
 		    typedef typename From::Node Node;
 		    typedef typename From::NodeIt NodeIt;
 		    typedef typename From::Arc Arc;
 		    typedef typename From::ArcIt ArcIt;
 		    typedef typename To::Node TNode;
 		    typedef typename To::Arc TArc;
 		    typedef typename From::template NodeMap<TNode> NodeRefMap;
 		    typedef typename From::template ArcMap<TArc> ArcRefMap;
 		  public:
 		    /// \brief Constructor for the DigraphCopy.
 		    ///
 		    /// It copies the content of the \c _from digraph into the
 		    /// \c _to digraph.
 		    DigraphCopy(To& to, const From& from)
 		      : _from(from), _to(to) {}
 		    /// \brief Destructor of the DigraphCopy
 		    ///
 		    /// Destructor of the DigraphCopy
 		    ~DigraphCopy() {
 		      for (int i = 0; i < int(_node_maps.size()); ++i) {
 		        delete _node_maps[i];
+		      }
 		      for (int i = 0; i < int(_arc_maps.size()); ++i) {
 		        delete _arc_maps[i];
+		      }
+		    }
 		    /// \brief Copies the node references into the given map.
 		    ///
 		    /// Copies the node references into the given map. The parameter
 		    /// should be a map, which key type is the Node type of the source
 		    /// graph, while the value type is the Node type of the
 		    /// destination graph.
 		    template <typename NodeRef>
 		    DigraphCopy& nodeRef(NodeRef& map) {
 		      _node_maps.push_back(new _core_bits::RefCopy<From, Node,
 		                           NodeRefMap, NodeRef>(map));
 		      return *this;
+		    }
 		    /// \brief Copies the node cross references into the given map.
 		    ///
 		    ///  Copies the node cross references (reverse references) into
 		    ///  the given map. The parameter should be a map, which key type
 		    ///  is the Node type of the destination graph, while the value type is
 		    ///  the Node type of the source graph.
 		    template <typename NodeCrossRef>
 		    DigraphCopy& nodeCrossRef(NodeCrossRef& map) {
 		      _node_maps.push_back(new _core_bits::CrossRefCopy<From, Node,
 		                           NodeRefMap, NodeCrossRef>(map));
 		      return *this;
+		    }
 		    /// \brief Make copy of the given map.
 		    ///
 		    /// Makes copy of the given map for the newly created digraph.
 		    /// The new map's key type is the destination graph's node type,
 		    /// and the copied map's key type is the source graph's node type.
 		    template <typename ToMap, typename FromMap>
 		    DigraphCopy& nodeMap(ToMap& tmap, const FromMap& map) {
 		      _node_maps.push_back(new _core_bits::MapCopy<From, Node,
 		                           NodeRefMap, ToMap, FromMap>(tmap, map));
 		      return *this;
+		    }
 		    /// \brief Make a copy of the given node.
 		    ///
 		    /// Make a copy of the given node.
 		    DigraphCopy& node(TNode& tnode, const Node& snode) {
 		      _node_maps.push_back(new _core_bits::ItemCopy<From, Node,
 		                           NodeRefMap, TNode>(tnode, snode));
 		      return *this;
+		    }
 		    /// \brief Copies the arc references into the given map.
 		    ///
 		    /// Copies the arc references into the given map.
 		    template <typename ArcRef>
 		    DigraphCopy& arcRef(ArcRef& map) {
 		      _arc_maps.push_back(new _core_bits::RefCopy<From, Arc,
 		                          ArcRefMap, ArcRef>(map));
 		      return *this;
+		    }
 		    /// \brief Copies the arc cross references into the given map.
 		    ///
 		    ///  Copies the arc cross references (reverse references) into
 		    ///  the given map.
 		    template <typename ArcCrossRef>
 		    DigraphCopy& arcCrossRef(ArcCrossRef& map) {
 		      _arc_maps.push_back(new _core_bits::CrossRefCopy<From, Arc,
 		                          ArcRefMap, ArcCrossRef>(map));
 		      return *this;
+		    }
 		    /// \brief Make copy of the given map.
 		    ///
 		    /// Makes copy of the given map for the newly created digraph.
 		    /// The new map's key type is the to digraph's arc type,
 		    /// and the copied map's key type is the from digraph's arc
 		    /// type.
 		    template <typename ToMap, typename FromMap>
 		    DigraphCopy& arcMap(ToMap& tmap, const FromMap& map) {
 		      _arc_maps.push_back(new _core_bits::MapCopy<From, Arc,
 		                          ArcRefMap, ToMap, FromMap>(tmap, map));
 		      return *this;
+		    }
 		    /// \brief Make a copy of the given arc.
 		    ///
 		    /// Make a copy of the given arc.
 		    DigraphCopy& arc(TArc& tarc, const Arc& sarc) {
 		      _arc_maps.push_back(new _core_bits::ItemCopy<From, Arc,
 		                          ArcRefMap, TArc>(tarc, sarc));
 		      return *this;
+		    }
 		    /// \brief Executes the copies.
 		    ///
 		    /// Executes the copies.
 		    void run() {
 		      NodeRefMap nodeRefMap(_from);
 		      ArcRefMap arcRefMap(_from);
 		      _core_bits::DigraphCopySelector<To>::
 		        copy(_to, _from, nodeRefMap, arcRefMap);
 		      for (int i = 0; i < int(_node_maps.size()); ++i) {
 		        _node_maps[i]->copy(_from, nodeRefMap);
+		      }
 		      for (int i = 0; i < int(_arc_maps.size()); ++i) {
 		        _arc_maps[i]->copy(_from, arcRefMap);
+		      }
+		    }
 		  protected:
 		    const From& _from;
 		    To& _to;
 		    std::vector<_core_bits::MapCopyBase<From, Node, NodeRefMap>* >
 		    _node_maps;
 		    std::vector<_core_bits::MapCopyBase<From, Arc, ArcRefMap>* >
 		    _arc_maps;
 		  };
 		  /// \brief Copy a digraph to another digraph.
 		  ///
 		  /// Copy a digraph to another digraph. The complete usage of the
 		  /// function is detailed in the DigraphCopy class, but a short
 		  /// example shows a basic work:
 		  ///\code
 		  /// copyDigraph(trg, src).nodeRef(nr).arcCrossRef(ecr).run();
 		  ///\endcode
 		  ///
 		  /// After the copy the \c nr map will contain the mapping from the
 		  /// nodes of the \c from digraph to the nodes of the \c to digraph and
 		  /// \c ecr will contain the mapping from the arcs of the \c to digraph
 		  /// to the arcs of the \c from digraph.
 		  ///
 		  /// \see DigraphCopy
 		  template <typename To, typename From>
 		  DigraphCopy<To, From> copyDigraph(To& to, const From& from) {
 		    return DigraphCopy<To, From>(to, from);
+		  }
 		  /// \brief Class to copy a graph.
 		  ///
 		  /// Class to copy a graph to another graph (duplicate a graph). The
 		  /// simplest way of using it is through the \c copyGraph() function.
 		  ///
 		  /// This class not just make a copy of a graph, but it can create
 		  /// references and cross references between the nodes, edges and arcs of
 		  /// the two graphs, it can copy maps for use with the newly created
 		  /// graph and copy nodes, edges and arcs.
 		  ///
 		  /// To make a copy from a graph, first an instance of GraphCopy
 		  /// should be created, then the data belongs to the graph should
 		  /// assigned to copy. In the end, the \c run() member should be
 		  /// called.
 		  ///
 		  /// The next code copies a graph with several data:
 		  ///\code
 		  ///  GraphCopy<NewGraph, OrigGraph> dc(new_graph, orig_graph);
 		  ///  // create a reference for the nodes
 		  ///  OrigGraph::NodeMap<NewGraph::Node> nr(orig_graph);
 		  ///  dc.nodeRef(nr);
 		  ///  // create a cross reference (inverse) for the edges
 		  ///  NewGraph::EdgeMap<OrigGraph::Arc> ecr(new_graph);
 		  ///  dc.edgeCrossRef(ecr);
 		  ///  // copy an arc map
 		  ///  OrigGraph::ArcMap<double> oamap(orig_graph);
 		  ///  NewGraph::ArcMap<double> namap(new_graph);
 		  ///  dc.arcMap(namap, oamap);
 		  ///  // copy a node
 		  ///  OrigGraph::Node on;
 		  ///  NewGraph::Node nn;
 		  ///  dc.node(nn, on);
 		  ///  // Executions of copy
 		  ///  dc.run();
 		  ///\endcode
 		  template <typename To, typename From>
 		  class GraphCopy {
 		  private:
 		    typedef typename From::Node Node;
 		    typedef typename From::NodeIt NodeIt;
 		    typedef typename From::Arc Arc;
 		    typedef typename From::ArcIt ArcIt;
 		    typedef typename From::Edge Edge;
 		    typedef typename From::EdgeIt EdgeIt;
 		    typedef typename To::Node TNode;
 		    typedef typename To::Arc TArc;
 		    typedef typename To::Edge TEdge;
 		    typedef typename From::template NodeMap<TNode> NodeRefMap;
 		    typedef typename From::template EdgeMap<TEdge> EdgeRefMap;
 		    struct ArcRefMap {
 		      ArcRefMap(const To& to, const From& from,
 		                const EdgeRefMap& edge_ref, const NodeRefMap& node_ref)
 		        : _to(to), _from(from),
 		          _edge_ref(edge_ref), _node_ref(node_ref) {}
 		      typedef typename From::Arc Key;
 		      typedef typename To::Arc Value;
 		      Value operator[](const Key& key) const {
 		        bool forward = _from.u(key) != _from.v(key) ?
 		          _node_ref[_from.source(key)] ==
 		          _to.source(_to.direct(_edge_ref[key], true)) :
 		          _from.direction(key);
 		        return _to.direct(_edge_ref[key], forward);
+		      }
 		      const To& _to;
 		      const From& _from;
 		      const EdgeRefMap& _edge_ref;
 		      const NodeRefMap& _node_ref;
 		    };
 		  public:
 		    /// \brief Constructor for the GraphCopy.
 		    ///
 		    /// It copies the content of the \c _from graph into the
 		    /// \c _to graph.
 		    GraphCopy(To& to, const From& from)
 		      : _from(from), _to(to) {}
 		    /// \brief Destructor of the GraphCopy
 		    ///
 		    /// Destructor of the GraphCopy
 		    ~GraphCopy() {
 		      for (int i = 0; i < int(_node_maps.size()); ++i) {
 		        delete _node_maps[i];
+		      }
 		      for (int i = 0; i < int(_arc_maps.size()); ++i) {
 		        delete _arc_maps[i];
+		      }
 		      for (int i = 0; i < int(_edge_maps.size()); ++i) {
 		        delete _edge_maps[i];
+		      }
+		    }
 		    /// \brief Copies the node references into the given map.
 		    ///
 		    /// Copies the node references into the given map.
 		    template <typename NodeRef>
 		    GraphCopy& nodeRef(NodeRef& map) {
 		      _node_maps.push_back(new _core_bits::RefCopy<From, Node,
 		                           NodeRefMap, NodeRef>(map));
 		      return *this;
+		    }
 		    /// \brief Copies the node cross references into the given map.
 		    ///
 		    ///  Copies the node cross references (reverse references) into
 		    ///  the given map.
 		    template <typename NodeCrossRef>
 		    GraphCopy& nodeCrossRef(NodeCrossRef& map) {
 		      _node_maps.push_back(new _core_bits::CrossRefCopy<From, Node,
 		                           NodeRefMap, NodeCrossRef>(map));
 		      return *this;
+		    }
 		    /// \brief Make copy of the given map.
 		    ///
 		    /// Makes copy of the given map for the newly created graph.
 		    /// The new map's key type is the to graph's node type,
 		    /// and the copied map's key type is the from graph's node
 		    /// type.
 		    template <typename ToMap, typename FromMap>
 		    GraphCopy& nodeMap(ToMap& tmap, const FromMap& map) {
 		      _node_maps.push_back(new _core_bits::MapCopy<From, Node,
 		                           NodeRefMap, ToMap, FromMap>(tmap, map));
 		      return *this;
+		    }
 		    /// \brief Make a copy of the given node.
 		    ///
 		    /// Make a copy of the given node.
 		    GraphCopy& node(TNode& tnode, const Node& snode) {
 		      _node_maps.push_back(new _core_bits::ItemCopy<From, Node,
 		                           NodeRefMap, TNode>(tnode, snode));
 		      return *this;
+		    }
 		    /// \brief Copies the arc references into the given map.
 		    ///
 		    /// Copies the arc references into the given map.
 		    template <typename ArcRef>
 		    GraphCopy& arcRef(ArcRef& map) {
 		      _arc_maps.push_back(new _core_bits::RefCopy<From, Arc,
 		                          ArcRefMap, ArcRef>(map));
 		      return *this;
+		    }
 		    /// \brief Copies the arc cross references into the given map.
 		    ///
 		    ///  Copies the arc cross references (reverse references) into
 		    ///  the given map.
 		    template <typename ArcCrossRef>
 		    GraphCopy& arcCrossRef(ArcCrossRef& map) {
 		      _arc_maps.push_back(new _core_bits::CrossRefCopy<From, Arc,
 		                          ArcRefMap, ArcCrossRef>(map));
 		      return *this;
+		    }
 		    /// \brief Make copy of the given map.
 		    ///
 		    /// Makes copy of the given map for the newly created graph.
 		    /// The new map's key type is the to graph's arc type,
 		    /// and the copied map's key type is the from graph's arc
 		    /// type.
 		    template <typename ToMap, typename FromMap>
 		    GraphCopy& arcMap(ToMap& tmap, const FromMap& map) {
 		      _arc_maps.push_back(new _core_bits::MapCopy<From, Arc,
 		                          ArcRefMap, ToMap, FromMap>(tmap, map));
 		      return *this;
+		    }
 		    /// \brief Make a copy of the given arc.
 		    ///
 		    /// Make a copy of the given arc.
 		    GraphCopy& arc(TArc& tarc, const Arc& sarc) {
 		      _arc_maps.push_back(new _core_bits::ItemCopy<From, Arc,
 		                          ArcRefMap, TArc>(tarc, sarc));
 		      return *this;
+		    }
 		    /// \brief Copies the edge references into the given map.
 		    ///
 		    /// Copies the edge references into the given map.
 		    template <typename EdgeRef>
 		    GraphCopy& edgeRef(EdgeRef& map) {
 		      _edge_maps.push_back(new _core_bits::RefCopy<From, Edge,
 		                           EdgeRefMap, EdgeRef>(map));
 		      return *this;
+		    }
 		    /// \brief Copies the edge cross references into the given map.
 		    ///
 		    /// Copies the edge cross references (reverse
 		    /// references) into the given map.
 		    template <typename EdgeCrossRef>
 		    GraphCopy& edgeCrossRef(EdgeCrossRef& map) {
 		      _edge_maps.push_back(new _core_bits::CrossRefCopy<From,
 		                           Edge, EdgeRefMap, EdgeCrossRef>(map));
 		      return *this;
+		    }
 		    /// \brief Make copy of the given map.
 		    ///
 		    /// Makes copy of the given map for the newly created graph.
 		    /// The new map's key type is the to graph's edge type,
 		    /// and the copied map's key type is the from graph's edge
 		    /// type.
 		    template <typename ToMap, typename FromMap>
 		    GraphCopy& edgeMap(ToMap& tmap, const FromMap& map) {
 		      _edge_maps.push_back(new _core_bits::MapCopy<From, Edge,
 		                           EdgeRefMap, ToMap, FromMap>(tmap, map));
 		      return *this;
+		    }
 		    /// \brief Make a copy of the given edge.
 		    ///
 		    /// Make a copy of the given edge.
 		    GraphCopy& edge(TEdge& tedge, const Edge& sedge) {
 		      _edge_maps.push_back(new _core_bits::ItemCopy<From, Edge,
 		                           EdgeRefMap, TEdge>(tedge, sedge));
 		      return *this;
+		    }
 		    /// \brief Executes the copies.
 		    ///
 		    /// Executes the copies.
 		    void run() {
 		      NodeRefMap nodeRefMap(_from);
 		      EdgeRefMap edgeRefMap(_from);
 		      ArcRefMap arcRefMap(_to, _from, edgeRefMap, nodeRefMap);
 		      _core_bits::GraphCopySelector<To>::
 		        copy(_to, _from, nodeRefMap, edgeRefMap);
 		      for (int i = 0; i < int(_node_maps.size()); ++i) {
 		        _node_maps[i]->copy(_from, nodeRefMap);
+		      }
 		      for (int i = 0; i < int(_edge_maps.size()); ++i) {
 		        _edge_maps[i]->copy(_from, edgeRefMap);
+		      }
 		      for (int i = 0; i < int(_arc_maps.size()); ++i) {
 		        _arc_maps[i]->copy(_from, arcRefMap);
+		      }
+		    }
 		  private:
 		    const From& _from;
 		    To& _to;
 		    std::vector<_core_bits::MapCopyBase<From, Node, NodeRefMap>* >
 		    _node_maps;
 		    std::vector<_core_bits::MapCopyBase<From, Arc, ArcRefMap>* >
 		    _arc_maps;
 		    std::vector<_core_bits::MapCopyBase<From, Edge, EdgeRefMap>* >
 		    _edge_maps;
 		  };
 		  /// \brief Copy a graph to another graph.
 		  ///
 		  /// Copy a graph to another graph. The complete usage of the
 		  /// function is detailed in the GraphCopy class, but a short
 		  /// example shows a basic work:
 		  ///\code
 		  /// copyGraph(trg, src).nodeRef(nr).arcCrossRef(ecr).run();
 		  ///\endcode
 		  ///
 		  /// After the copy the \c nr map will contain the mapping from the
 		  /// nodes of the \c from graph to the nodes of the \c to graph and
 		  /// \c ecr will contain the mapping from the arcs of the \c to graph
 		  /// to the arcs of the \c from graph.
 		  ///
 		  /// \see GraphCopy
 		  template <typename To, typename From>
 		  GraphCopy<To, From>
 		  copyGraph(To& to, const From& from) {
 		    return GraphCopy<To, From>(to, from);
+		  }
 		  namespace _core_bits {
 		    template <typename Graph, typename Enable = void>
 		    struct FindArcSelector {
 		      typedef typename Graph::Node Node;
 		      typedef typename Graph::Arc Arc;
 		      static Arc find(const Graph &g, Node u, Node v, Arc e) {
 		        if (e == INVALID) {
 		          g.firstOut(e, u);
 		        } else {
 		          g.nextOut(e);
+		        }
 		        while (e != INVALID && g.target(e) != v) {
 		          g.nextOut(e);
+		        }
 		        return e;
+		      }
 		    };
 		    template <typename Graph>
 		    struct FindArcSelector<
 		      Graph,
 		      typename enable_if<typename Graph::FindEdgeTag, void>::type>
+		    {
 		      typedef typename Graph::Node Node;
 		      typedef typename Graph::Arc Arc;
 		      static Arc find(const Graph &g, Node u, Node v, Arc prev) {
 		        return g.findArc(u, v, prev);
+		      }
 		    };
+		  }
 		  /// \brief Finds an arc between two nodes of a graph.
 		  ///
 		  /// Finds an arc from node \c u to node \c v in graph \c g.
 		  ///
 		  /// If \c prev is \ref INVALID (this is the default value), then
 		  /// it finds the first arc from \c u to \c v. Otherwise it looks for
 		  /// the next arc from \c u to \c v after \c prev.
 		  /// \return The found arc or \ref INVALID if there is no such an arc.
 		  ///
 		  /// Thus you can iterate through each arc from \c u to \c v as it follows.
 		  ///\code
 		  /// for(Arc e=findArc(g,u,v);e!=INVALID;e=findArc(g,u,v,e)) {
 		  ///   ...
 		  /// }
 		  ///\endcode
 		  ///
 		  ///\sa ArcLookUp
 		  ///\sa AllArcLookUp
 		  ///\sa DynArcLookUp
 		  ///\sa ConArcIt
 		  template <typename Graph>
 		  inline typename Graph::Arc
 		  findArc(const Graph &g, typename Graph::Node u, typename Graph::Node v,
 		          typename Graph::Arc prev = INVALID) {
 		    return _core_bits::FindArcSelector<Graph>::find(g, u, v, prev);
+		  }
 		  /// \brief Iterator for iterating on arcs connected the same nodes.
 		  ///
 		  /// Iterator for iterating on arcs connected the same nodes. It is
 		  /// higher level interface for the findArc() function. You can
 		  /// use it the following way:
 		  ///\code
 		  /// for (ConArcIt<Graph> it(g, src, trg); it != INVALID; ++it) {
 		  ///   ...
 		  /// }
 		  ///\endcode
 		  ///
 		  ///\sa findArc()
 		  ///\sa ArcLookUp
 		  ///\sa AllArcLookUp
 		  ///\sa DynArcLookUp
 		  template <typename _Graph>
 		  class ConArcIt : public _Graph::Arc {
 		  public:
 		    typedef _Graph Graph;
 		    typedef typename Graph::Arc Parent;
 		    typedef typename Graph::Arc Arc;
 		    typedef typename Graph::Node Node;
 		    /// \brief Constructor.
 		    ///
 		    /// Construct a new ConArcIt iterating on the arcs which
 		    /// connects the \c u and \c v node.
 		    ConArcIt(const Graph& g, Node u, Node v) : _graph(g) {
 		      Parent::operator=(findArc(_graph, u, v));
+		    }
 		    /// \brief Constructor.
 		    ///
 		    /// Construct a new ConArcIt which continues the iterating from
 		    /// the \c e arc.
 		    ConArcIt(const Graph& g, Arc a) : Parent(a), _graph(g) {}
 		    /// \brief Increment operator.
 		    ///
 		    /// It increments the iterator and gives back the next arc.
 		    ConArcIt& operator++() {
 		      Parent::operator=(findArc(_graph, _graph.source(*this),
 		                                _graph.target(*this), *this));
 		      return *this;
+		    }
 		  private:
 		    const Graph& _graph;
 		  };
 		  namespace _core_bits {
 		    template <typename Graph, typename Enable = void>
 		    struct FindEdgeSelector {
 		      typedef typename Graph::Node Node;
 		      typedef typename Graph::Edge Edge;
 		      static Edge find(const Graph &g, Node u, Node v, Edge e) {
 		        bool b;
 		        if (u != v) {
 		          if (e == INVALID) {
 		            g.firstInc(e, b, u);
 		          } else {
 		            b = g.u(e) == u;
 		            g.nextInc(e, b);
+		          }
 		          while (e != INVALID && (b ? g.v(e) : g.u(e)) != v) {
 		            g.nextInc(e, b);
+		          }
 		        } else {
 		          if (e == INVALID) {
 		            g.firstInc(e, b, u);
 		          } else {
 		            b = true;
 		            g.nextInc(e, b);
+		          }
 		          while (e != INVALID && (!b || g.v(e) != v)) {
 		            g.nextInc(e, b);
+		          }
+		        }
 		        return e;
+		      }
 		    };
 		    template <typename Graph>
 		    struct FindEdgeSelector<
 		      Graph,
 		      typename enable_if<typename Graph::FindEdgeTag, void>::type>
+		    {
 		      typedef typename Graph::Node Node;
 		      typedef typename Graph::Edge Edge;
 		      static Edge find(const Graph &g, Node u, Node v, Edge prev) {
 		        return g.findEdge(u, v, prev);
+		      }
 		    };
+		  }
 		  /// \brief Finds an edge between two nodes of a graph.
 		  ///
 		  /// Finds an edge from node \c u to node \c v in graph \c g.
 		  /// If the node \c u and node \c v is equal then each loop edge
 		  /// will be enumerated once.
 		  ///
 		  /// If \c prev is \ref INVALID (this is the default value), then
 		  /// it finds the first arc from \c u to \c v. Otherwise it looks for
 		  /// the next arc from \c u to \c v after \c prev.
 		  /// \return The found arc or \ref INVALID if there is no such an arc.
 		  ///
 		  /// Thus you can iterate through each arc from \c u to \c v as it follows.
 		  ///\code
 		  /// for(Edge e = findEdge(g,u,v); e != INVALID;
 		  ///     e = findEdge(g,u,v,e)) {
 		  ///   ...
 		  /// }
 		  ///\endcode
 		  ///
 		  ///\sa ConEdgeIt
 		  template <typename Graph>
 		  inline typename Graph::Edge
 		  findEdge(const Graph &g, typename Graph::Node u, typename Graph::Node v,
 		            typename Graph::Edge p = INVALID) {
 		    return _core_bits::FindEdgeSelector<Graph>::find(g, u, v, p);
+		  }
 		  /// \brief Iterator for iterating on edges connected the same nodes.
 		  ///
 		  /// Iterator for iterating on edges connected the same nodes. It is
 		  /// higher level interface for the findEdge() function. You can
 		  /// use it the following way:
 		  ///\code
 		  /// for (ConEdgeIt<Graph> it(g, src, trg); it != INVALID; ++it) {
 		  ///   ...
 		  /// }
 		  ///\endcode
 		  ///
 		  ///\sa findEdge()
 		  template <typename _Graph>
 		  class ConEdgeIt : public _Graph::Edge {
 		  public:
 		    typedef _Graph Graph;
 		    typedef typename Graph::Edge Parent;
 		    typedef typename Graph::Edge Edge;
 		    typedef typename Graph::Node Node;
 		    /// \brief Constructor.
 		    ///
 		    /// Construct a new ConEdgeIt iterating on the edges which
 		    /// connects the \c u and \c v node.
 		    ConEdgeIt(const Graph& g, Node u, Node v) : _graph(g) {
 		      Parent::operator=(findEdge(_graph, u, v));
+		    }
 		    /// \brief Constructor.
 		    ///
 		    /// Construct a new ConEdgeIt which continues the iterating from
 		    /// the \c e edge.
 		    ConEdgeIt(const Graph& g, Edge e) : Parent(e), _graph(g) {}
 		    /// \brief Increment operator.
 		    ///
 		    /// It increments the iterator and gives back the next edge.
 		    ConEdgeIt& operator++() {
 		      Parent::operator=(findEdge(_graph, _graph.u(*this),
 		                                 _graph.v(*this), *this));
 		      return *this;
+		    }
 		  private:
 		    const Graph& _graph;
 		  };
 		  ///Dynamic arc look up between given endpoints.
 		  ///Using this class, you can find an arc in a digraph from a given
 		  ///source to a given target in amortized time <em>O(log d)</em>,
 		  ///where <em>d</em> is the out-degree of the source node.
 		  ///
 		  ///It is possible to find \e all parallel arcs between two nodes with
 		  ///the \c findFirst() and \c findNext() members.
 		  ///
 		  ///See the \ref ArcLookUp and \ref AllArcLookUp classes if your
 		  ///digraph is not changed so frequently.
 		  ///
 		  ///This class uses a self-adjusting binary search tree, Sleator's
 		  ///and Tarjan's Splay tree for guarantee the logarithmic amortized
 		  ///time bound for arc lookups. This class also guarantees the
 		  ///optimal time bound in a constant factor for any distribution of
 		  ///queries.
 		  ///
 		  ///\tparam G The type of the underlying digraph.
 		  ///
 		  ///\sa ArcLookUp
 		  ///\sa AllArcLookUp
 		  template<class G>
 		  class DynArcLookUp
 		    : protected ItemSetTraits<G, typename G::Arc>::ItemNotifier::ObserverBase
+		  {
 		  public:
 		    typedef typename ItemSetTraits<G, typename G::Arc>
 		    ::ItemNotifier::ObserverBase Parent;
 		    TEMPLATE_DIGRAPH_TYPEDEFS(G);
 		    typedef G Digraph;
 		  protected:
 		    class AutoNodeMap : public ItemSetTraits<G, Node>::template Map<Arc>::Type {
 		    public:
 		      typedef typename ItemSetTraits<G, Node>::template Map<Arc>::Type Parent;
 		      AutoNodeMap(const G& digraph) : Parent(digraph, INVALID) {}
 		      virtual void add(const Node& node) {
 		        Parent::add(node);
 		        Parent::set(node, INVALID);
+		      }
 		      virtual void add(const std::vector<Node>& nodes) {
 		        Parent::add(nodes);
 		        for (int i = 0; i < int(nodes.size()); ++i) {
 		          Parent::set(nodes[i], INVALID);
+		        }
+		      }
 		      virtual void build() {
 		        Parent::build();
 		        Node it;
 		        typename Parent::Notifier* nf = Parent::notifier();
 		        for (nf->first(it); it != INVALID; nf->next(it)) {
 		          Parent::set(it, INVALID);
+		        }
+		      }
 		    };
 		    const Digraph &_g;
 		    AutoNodeMap _head;
 		    typename Digraph::template ArcMap<Arc> _parent;
 		    typename Digraph::template ArcMap<Arc> _left;
 		    typename Digraph::template ArcMap<Arc> _right;
 		    class ArcLess {
 		      const Digraph &g;
 		    public:
 		      ArcLess(const Digraph &_g) : g(_g) {}
 		      bool operator()(Arc a,Arc b) const
+		      {
 		        return g.target(a)<g.target(b);
+		      }
 		    };
 		  public:
 		    ///Constructor
 		    ///Constructor.
 		    ///
 		    ///It builds up the search database.
 		    DynArcLookUp(const Digraph &g)
 		      : _g(g),_head(g),_parent(g),_left(g),_right(g)
+		    {
 		      Parent::attach(_g.notifier(typename Digraph::Arc()));
 		      refresh();
+		    }
 		  protected:
 		    virtual void add(const Arc& arc) {
 		      insert(arc);
+		    }
 		    virtual void add(const std::vector<Arc>& arcs) {
 		      for (int i = 0; i < int(arcs.size()); ++i) {
 		        insert(arcs[i]);
+		      }
+		    }
 		    virtual void erase(const Arc& arc) {
 		      remove(arc);
+		    }
 		    virtual void erase(const std::vector<Arc>& arcs) {
 		      for (int i = 0; i < int(arcs.size()); ++i) {
 		        remove(arcs[i]);
+		      }
+		    }
 		    virtual void build() {
 		      refresh();
+		    }
 		    virtual void clear() {
 		      for(NodeIt n(_g);n!=INVALID;++n) {
 		        _head.set(n, INVALID);
+		      }
+		    }
 		    void insert(Arc arc) {
 		      Node s = _g.source(arc);
 		      Node t = _g.target(arc);
 		      _left.set(arc, INVALID);
 		      _right.set(arc, INVALID);
 		      Arc e = _head[s];
 		      if (e == INVALID) {
 		        _head.set(s, arc);
 		        _parent.set(arc, INVALID);
 		        return;
+		      }
 		      while (true) {
 		        if (t < _g.target(e)) {
 		          if (_left[e] == INVALID) {
 		            _left.set(e, arc);
 		            _parent.set(arc, e);
 		            splay(arc);
 		            return;
 		          } else {
 		            e = _left[e];
+		          }
 		        } else {
 		          if (_right[e] == INVALID) {
 		            _right.set(e, arc);
 		            _parent.set(arc, e);
 		            splay(arc);
 		            return;
 		          } else {
 		            e = _right[e];
+		          }
+		        }
+		      }
+		    }
 		    void remove(Arc arc) {
 		      if (_left[arc] == INVALID) {
 		        if (_right[arc] != INVALID) {
 		          _parent.set(_right[arc], _parent[arc]);
+		        }
 		        if (_parent[arc] != INVALID) {
 		          if (_left[_parent[arc]] == arc) {
 		            _left.set(_parent[arc], _right[arc]);
 		          } else {
 		            _right.set(_parent[arc], _right[arc]);
+		          }
 		        } else {
 		          _head.set(_g.source(arc), _right[arc]);
+		        }
 		      } else if (_right[arc] == INVALID) {
 		        _parent.set(_left[arc], _parent[arc]);
 		        if (_parent[arc] != INVALID) {
 		          if (_left[_parent[arc]] == arc) {
 		            _left.set(_parent[arc], _left[arc]);
 		          } else {
 		            _right.set(_parent[arc], _left[arc]);
+		          }
 		        } else {
 		          _head.set(_g.source(arc), _left[arc]);
+		        }
 		      } else {
 		        Arc e = _left[arc];
 		        if (_right[e] != INVALID) {
 		          e = _right[e];
 		          while (_right[e] != INVALID) {
 		            e = _right[e];
+		          }
 		          Arc s = _parent[e];
 		          _right.set(_parent[e], _left[e]);
 		          if (_left[e] != INVALID) {
 		            _parent.set(_left[e], _parent[e]);
+		          }
 		          _left.set(e, _left[arc]);
 		          _parent.set(_left[arc], e);
 		          _right.set(e, _right[arc]);
 		          _parent.set(_right[arc], e);
 		          _parent.set(e, _parent[arc]);
 		          if (_parent[arc] != INVALID) {
 		            if (_left[_parent[arc]] == arc) {
 		              _left.set(_parent[arc], e);
 		            } else {
 		              _right.set(_parent[arc], e);
+		            }
+		          }
 		          splay(s);
 		        } else {
 		          _right.set(e, _right[arc]);
 		          _parent.set(_right[arc], e);
 		          if (_parent[arc] != INVALID) {
 		            if (_left[_parent[arc]] == arc) {
 		              _left.set(_parent[arc], e);
 		            } else {
 		              _right.set(_parent[arc], e);
+		            }
 		          } else {
 		            _head.set(_g.source(arc), e);
+		          }
+		        }
+		      }
+		    }
 		    Arc refreshRec(std::vector<Arc> &v,int a,int b)
+		    {
 		      int m=(a+b)/2;
 		      Arc me=v[m];
 		      if (a < m) {
 		        Arc left = refreshRec(v,a,m-1);
 		        _left.set(me, left);
 		        _parent.set(left, me);
 		      } else {
 		        _left.set(me, INVALID);
+		      }
 		      if (m < b) {
 		        Arc right = refreshRec(v,m+1,b);
 		        _right.set(me, right);
 		        _parent.set(right, me);
 		      } else {
 		        _right.set(me, INVALID);
+		      }
 		      return me;
+		    }
 		    void refresh() {
 		      for(NodeIt n(_g);n!=INVALID;++n) {
 		        std::vector<Arc> v;
 		        for(OutArcIt e(_g,n);e!=INVALID;++e) v.push_back(e);
 		        if(v.size()) {
 		          std::sort(v.begin(),v.end(),ArcLess(_g));
 		          Arc head = refreshRec(v,0,v.size()-1);
 		          _head.set(n, head);
 		          _parent.set(head, INVALID);
+		        }
 		        else _head.set(n, INVALID);
+		      }
+		    }
 		    void zig(Arc v) {
 		      Arc w = _parent[v];
 		      _parent.set(v, _parent[w]);
 		      _parent.set(w, v);
 		      _left.set(w, _right[v]);
 		      _right.set(v, w);
 		      if (_parent[v] != INVALID) {
 		        if (_right[_parent[v]] == w) {
 		          _right.set(_parent[v], v);
 		        } else {
 		          _left.set(_parent[v], v);
+		        }
+		      }
 		      if (_left[w] != INVALID){
 		        _parent.set(_left[w], w);
+		      }
+		    }
 		    void zag(Arc v) {
 		      Arc w = _parent[v];
 		      _parent.set(v, _parent[w]);
 		      _parent.set(w, v);
 		      _right.set(w, _left[v]);
 		      _left.set(v, w);
 		      if (_parent[v] != INVALID){
 		        if (_left[_parent[v]] == w) {
 		          _left.set(_parent[v], v);
 		        } else {
 		          _right.set(_parent[v], v);
+		        }
+		      }
 		      if (_right[w] != INVALID){
 		        _parent.set(_right[w], w);
+		      }
+		    }
 		    void splay(Arc v) {
 		      while (_parent[v] != INVALID) {
 		        if (v == _left[_parent[v]]) {
 		          if (_parent[_parent[v]] == INVALID) {
 		            zig(v);
 		          } else {
 		            if (_parent[v] == _left[_parent[_parent[v]]]) {
 		              zig(_parent[v]);
 		              zig(v);
 		            } else {
 		              zig(v);
 		              zag(v);
+		            }
+		          }
 		        } else {
 		          if (_parent[_parent[v]] == INVALID) {
 		            zag(v);
 		          } else {
 		            if (_parent[v] == _left[_parent[_parent[v]]]) {
 		              zag(v);
 		              zig(v);
 		            } else {
 		              zag(_parent[v]);
 		              zag(v);
+		            }
+		          }
+		        }
+		      }
 		      _head[_g.source(v)] = v;
+		    }
 		  public:
 		    ///Find an arc between two nodes.
 		    ///Find an arc between two nodes in time <em>O(</em>log<em>d)</em>, where
 		    /// <em>d</em> is the number of outgoing arcs of \c s.
 		    ///\param s The source node
 		    ///\param t The target node
 		    ///\return An arc from \c s to \c t if there exists,
 		    ///\ref INVALID otherwise.
 		    Arc operator()(Node s, Node t) const
+		    {
 		      Arc a = _head[s];
 		      while (true) {
 		        if (_g.target(a) == t) {
 		          const_cast<DynArcLookUp&>(*this).splay(a);
 		          return a;
 		        } else if (t < _g.target(a)) {
 		          if (_left[a] == INVALID) {
 		            const_cast<DynArcLookUp&>(*this).splay(a);
 		            return INVALID;
 		          } else {
 		            a = _left[a];
+		          }
 		        } else  {
 		          if (_right[a] == INVALID) {
 		            const_cast<DynArcLookUp&>(*this).splay(a);
 		            return INVALID;
 		          } else {
 		            a = _right[a];
+		          }
+		        }
+		      }
+		    }
 		    ///Find the first arc between two nodes.
 		    ///Find the first arc between two nodes in time
 		    /// <em>O(</em>log<em>d)</em>, where <em>d</em> is the number of
 		    /// outgoing arcs of \c s.
 		    ///\param s The source node
 		    ///\param t The target node
 		    ///\return An arc from \c s to \c t if there exists, \ref INVALID
 		    /// otherwise.
 		    Arc findFirst(Node s, Node t) const
+		    {
 		      Arc a = _head[s];
 		      Arc r = INVALID;
 		      while (true) {
 		        if (_g.target(a) < t) {
 		          if (_right[a] == INVALID) {
 		            const_cast<DynArcLookUp&>(*this).splay(a);
 		            return r;
 		          } else {
 		            a = _right[a];
+		          }
 		        } else {
 		          if (_g.target(a) == t) {
 		            r = a;
+		          }
 		          if (_left[a] == INVALID) {
 		            const_cast<DynArcLookUp&>(*this).splay(a);
 		            return r;
 		          } else {
 		            a = _left[a];
+		          }
+		        }
+		      }
+		    }
 		    ///Find the next arc between two nodes.
 		    ///Find the next arc between two nodes in time
 		    /// <em>O(</em>log<em>d)</em>, where <em>d</em> is the number of
 		    /// outgoing arcs of \c s.
 		    ///\param s The source node
 		    ///\param t The target node
 		    ///\return An arc from \c s to \c t if there exists, \ref INVALID
 		    /// otherwise.
 		    ///\note If \c e is not the result of the previous \c findFirst()
 		    ///operation then the amorized time bound can not be guaranteed.
 		#ifdef DOXYGEN
 		    Arc findNext(Node s, Node t, Arc a) const
 		#else
 		    Arc findNext(Node, Node t, Arc a) const
 		#endif
+		    {
 		      if (_right[a] != INVALID) {
 		        a = _right[a];
 		        while (_left[a] != INVALID) {
 		          a = _left[a];
+		        }
 		        const_cast<DynArcLookUp&>(*this).splay(a);
 		      } else {
 		        while (_parent[a] != INVALID && _right[_parent[a]] ==  a) {
 		          a = _parent[a];
+		        }
 		        if (_parent[a] == INVALID) {
 		          return INVALID;
 		        } else {
 		          a = _parent[a];
 		          const_cast<DynArcLookUp&>(*this).splay(a);
+		        }
+		      }
 		      if (_g.target(a) == t) return a;
 		      else return INVALID;
+		    }
 		  };
 		  ///Fast arc look up between given endpoints.
 		  ///Using this class, you can find an arc in a digraph from a given
 		  ///source to a given target in time <em>O(log d)</em>,
 		  ///where <em>d</em> is the out-degree of the source node.
 		  ///
 		  ///It is not possible to find \e all parallel arcs between two nodes.
 		  ///Use \ref AllArcLookUp for this purpose.
 		  ///
 		  ///\warning This class is static, so you should refresh() (or at least
 		  ///refresh(Node)) this data structure
 		  ///whenever the digraph changes. This is a time consuming (superlinearly
 		  ///proportional (<em>O(m</em>log<em>m)</em>) to the number of arcs).
 		  ///
 		  ///\tparam G The type of the underlying digraph.
 		  ///
 		  ///\sa DynArcLookUp
 		  ///\sa AllArcLookUp
 		  template<class G>
 		  class ArcLookUp
+		  {
 		  public:
 		    TEMPLATE_DIGRAPH_TYPEDEFS(G);
 		    typedef G Digraph;
 		  protected:
 		    const Digraph &_g;
 		    typename Digraph::template NodeMap<Arc> _head;
 		    typename Digraph::template ArcMap<Arc> _left;
 		    typename Digraph::template ArcMap<Arc> _right;
 		    class ArcLess {
 		      const Digraph &g;
 		    public:
 		      ArcLess(const Digraph &_g) : g(_g) {}
 		      bool operator()(Arc a,Arc b) const
+		      {
 		        return g.target(a)<g.target(b);
+		      }
 		    };
 		  public:
 		    ///Constructor
 		    ///Constructor.
 		    ///
 		    ///It builds up the search database, which remains valid until the digraph
 		    ///changes.
 		    ArcLookUp(const Digraph &g) :_g(g),_head(g),_left(g),_right(g) {refresh();}
 		  private:
 		    Arc refreshRec(std::vector<Arc> &v,int a,int b)
+		    {
 		      int m=(a+b)/2;
 		      Arc me=v[m];
 		      _left[me] = a<m?refreshRec(v,a,m-1):INVALID;
 		      _right[me] = m<b?refreshRec(v,m+1,b):INVALID;
 		      return me;
+		    }
 		  public:
 		    ///Refresh the data structure at a node.
 		    ///Build up the search database of node \c n.
 		    ///
 		    ///It runs in time <em>O(d</em>log<em>d)</em>, where <em>d</em> is
 		    ///the number of the outgoing arcs of \c n.
 		    void refresh(Node n)
+		    {
 		      std::vector<Arc> v;
 		      for(OutArcIt e(_g,n);e!=INVALID;++e) v.push_back(e);
 		      if(v.size()) {
 		        std::sort(v.begin(),v.end(),ArcLess(_g));
 		        _head[n]=refreshRec(v,0,v.size()-1);
+		      }
 		      else _head[n]=INVALID;
+		    }
 		    ///Refresh the full data structure.
 		    ///Build up the full search database. In fact, it simply calls
 		    ///\ref refresh(Node) "refresh(n)" for each node \c n.
 		    ///
 		    ///It runs in time <em>O(m</em>log<em>D)</em>, where <em>m</em> is
 		    ///the number of the arcs of \c n and <em>D</em> is the maximum
 		    ///out-degree of the digraph.
 		    void refresh()
+		    {
 		      for(NodeIt n(_g);n!=INVALID;++n) refresh(n);
+		    }
 		    ///Find an arc between two nodes.
 		    ///Find an arc between two nodes in time <em>O(</em>log<em>d)</em>, where
 		    /// <em>d</em> is the number of outgoing arcs of \c s.
 		    ///\param s The source node
 		    ///\param t The target node
 		    ///\return An arc from \c s to \c t if there exists,
 		    ///\ref INVALID otherwise.
 		    ///
 		    ///\warning If you change the digraph, refresh() must be called before using
 		    ///this operator. If you change the outgoing arcs of
 		    ///a single node \c n, then
 		    ///\ref refresh(Node) "refresh(n)" is enough.
 		    ///
 		    Arc operator()(Node s, Node t) const
+		    {
 		      Arc e;
 		      for(e=_head[s];
 		          e!=INVALID&&_g.target(e)!=t;
 		          e = t < _g.target(e)?_left[e]:_right[e]) ;
 		      return e;
+		    }
 		  };
 		  ///Fast look up of all arcs between given endpoints.
 		  ///This class is the same as \ref ArcLookUp, with the addition
 		  ///that it makes it possible to find all arcs between given endpoints.
 		  ///
 		  ///\warning This class is static, so you should refresh() (or at least
 		  ///refresh(Node)) this data structure
 		  ///whenever the digraph changes. This is a time consuming (superlinearly
 		  ///proportional (<em>O(m</em>log<em>m)</em>) to the number of arcs).
 		  ///
 		  ///\tparam G The type of the underlying digraph.
 		  ///
 		  ///\sa DynArcLookUp
 		  ///\sa ArcLookUp
 		  template<class G>
 		  class AllArcLookUp : public ArcLookUp<G>
+		  {
 		    using ArcLookUp<G>::_g;
 		    using ArcLookUp<G>::_right;
 		    using ArcLookUp<G>::_left;
 		    using ArcLookUp<G>::_head;
 		    TEMPLATE_DIGRAPH_TYPEDEFS(G);
 		    typedef G Digraph;
 		    typename Digraph::template ArcMap<Arc> _next;
 		    Arc refreshNext(Arc head,Arc next=INVALID)
+		    {
 		      if(head==INVALID) return next;
 		      else {
 		        next=refreshNext(_right[head],next);
 		//         _next[head]=next;
 		        _next[head]=( next!=INVALID && _g.target(next)==_g.target(head))
 		          ? next : INVALID;
 		        return refreshNext(_left[head],head);
+		      }
+		    }
 		    void refreshNext()
+		    {
 		      for(NodeIt n(_g);n!=INVALID;++n) refreshNext(_head[n]);
+		    }
 		  public:
 		    ///Constructor
 		    ///Constructor.
 		    ///
 		    ///It builds up the search database, which remains valid until the digraph
 		    ///changes.
 		    AllArcLookUp(const Digraph &g) : ArcLookUp<G>(g), _next(g) {refreshNext();}
 		    ///Refresh the data structure at a node.
 		    ///Build up the search database of node \c n.
 		    ///
 		    ///It runs in time <em>O(d</em>log<em>d)</em>, where <em>d</em> is
 		    ///the number of the outgoing arcs of \c n.
 		    void refresh(Node n)
+		    {
 		      ArcLookUp<G>::refresh(n);
 		      refreshNext(_head[n]);
+		    }
 		    ///Refresh the full data structure.
 		    ///Build up the full search database. In fact, it simply calls
 		    ///\ref refresh(Node) "refresh(n)" for each node \c n.
 		    ///
 		    ///It runs in time <em>O(m</em>log<em>D)</em>, where <em>m</em> is
 		    ///the number of the arcs of \c n and <em>D</em> is the maximum
 		    ///out-degree of the digraph.
 		    void refresh()
+		    {
 		      for(NodeIt n(_g);n!=INVALID;++n) refresh(_head[n]);
+		    }
 		    ///Find an arc between two nodes.
 		    ///Find an arc between two nodes.
 		    ///\param s The source node
 		    ///\param t The target node
 		    ///\param prev The previous arc between \c s and \c t. It it is INVALID or
 		    ///not given, the operator finds the first appropriate arc.
 		    ///\return An arc from \c s to \c t after \c prev or
 		    ///\ref INVALID if there is no more.
 		    ///
 		    ///For example, you can count the number of arcs from \c u to \c v in the
 		    ///following way.
 		    ///\code
 		    ///AllArcLookUp<ListDigraph> ae(g);
 		    ///...
 		    ///int n=0;
 		    ///for(Arc e=ae(u,v);e!=INVALID;e=ae(u,v,e)) n++;
 		    ///\endcode
 		    ///
 		    ///Finding the first arc take <em>O(</em>log<em>d)</em> time, where
 		    /// <em>d</em> is the number of outgoing arcs of \c s. Then, the
 		    ///consecutive arcs are found in constant time.
 		    ///
 		    ///\warning If you change the digraph, refresh() must be called before using
 		    ///this operator. If you change the outgoing arcs of
 		    ///a single node \c n, then
 		    ///\ref refresh(Node) "refresh(n)" is enough.
 		    ///
 		#ifdef DOXYGEN
 		    Arc operator()(Node s, Node t, Arc prev=INVALID) const {}
 		#else
 		    using ArcLookUp<G>::operator() ;
 		    Arc operator()(Node s, Node t, Arc prev) const
+		    {
 		      return prev==INVALID?(*this)(s,t):_next[prev];
+		    }
 		#endif
 		  };
 		  /// @}
 		} //namespace lemon
 		#endif

demo/graph_to_eps_demo.cc

Show inline comments

@@ -26,17 +26,16 @@
 		/// graphToEps(), and showing how to draw directed graphs,
 		/// how to handle parallel egdes, how to change the properties (like
 		/// color, shape, size, title etc.) of nodes and arcs individually
 		/// using appropriate \ref maps-page "graph maps".
 		///
 		/// \include graph_to_eps_demo.cc
 		#include<lemon/list_graph.h>
 		#include<lemon/graph_utils.h>
 		#include<lemon/graph_to_eps.h>
 		#include<lemon/math.h>
 		using namespace std;
 		using namespace lemon;
 		int main()
+		{

lemon/Makefile.am

Show inline comments

@@ -19,22 +19,22 @@
 		lemon_HEADERS += \
 		        lemon/arg_parser.h \
 			lemon/assert.h \
 		        lemon/bfs.h \
 		        lemon/bin_heap.h \
 		        lemon/color.h \
 			lemon/concept_check.h \
 		        lemon/counter.h \
 			lemon/core.h \
 		        lemon/dfs.h \
 		        lemon/dijkstra.h \
 		        lemon/dim2.h \
 			lemon/error.h \
 		        lemon/graph_to_eps.h \
 			lemon/graph_utils.h \
 			lemon/kruskal.h \
 			lemon/lgf_reader.h \
 			lemon/lgf_writer.h \
 			lemon/list_graph.h \
 			lemon/maps.h \
 			lemon/math.h \
 			lemon/path.h \
 		        lemon/random.h \
@@ -44,22 +44,21 @@
 			lemon/unionfind.h
 		bits_HEADERS += \
 			lemon/bits/alteration_notifier.h \
 			lemon/bits/array_map.h \
 			lemon/bits/base_extender.h \
 		        lemon/bits/bezier.h \
 			lemon/bits/default_map.h \
 		        lemon/bits/enable_if.h \
 			lemon/bits/graph_extender.h \
 		        lemon/bits/invalid.h \
 			lemon/bits/map_extender.h \
 			lemon/bits/path_dump.h \
 			lemon/bits/traits.h \
 		        lemon/bits/utility.h \
 			lemon/bits/vector_map.h
 		concept_HEADERS += \
 			lemon/concepts/digraph.h \
 			lemon/concepts/graph.h \
 			lemon/concepts/graph_components.h \
 			lemon/concepts/heap.h \
 			lemon/concepts/maps.h \

lemon/base.cc

Show inline comments

@@ -15,17 +15,17 @@
 		 * purpose.
+		 *
 		 */
 		///\file
 		///\brief Some basic non-inline functions and static global data.
 		#include<lemon/tolerance.h>
-		#include<lemon/bits/invalid.h>
+		#include<lemon/core.h>
 		namespace lemon {
 		  float Tolerance<float>::def_epsilon = 1e-4;
 		  double Tolerance<double>::def_epsilon = 1e-10;
 		  long double Tolerance<long double>::def_epsilon = 1e-14;
 		#ifndef LEMON_ONLY_TEMPLATES
 		  const Invalid INVALID = Invalid();

lemon/bfs.h

Show inline comments

@@ -19,19 +19,18 @@
 		#ifndef LEMON_BFS_H
 		#define LEMON_BFS_H
 		///\ingroup search
 		///\file
 		///\brief Bfs algorithm.
 		#include <lemon/list_graph.h>
 		#include <lemon/graph_utils.h>
 		#include <lemon/bits/path_dump.h>
-		#include <lemon/bits/invalid.h>
+		#include <lemon/core.h>
 		#include <lemon/error.h>
 		#include <lemon/maps.h>
 		namespace lemon {
 		  ///Default traits class of Bfs class.

lemon/bits/alteration_notifier.h

Show inline comments

@@ -17,17 +17,17 @@
 		 */
 		#ifndef LEMON_BITS_ALTERATION_NOTIFIER_H
 		#define LEMON_BITS_ALTERATION_NOTIFIER_H
 		#include <vector>
 		#include <list>
-		#include <lemon/bits/utility.h>
+		#include <lemon/core.h>
 		///\ingroup graphbits
 		///\file
 		///\brief Observer notifier for graph alteration observers.
 		namespace lemon {
 		  /// \ingroup graphbits

lemon/bits/base_extender.h

Show inline comments

@@ -14,17 +14,17 @@
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_BITS_BASE_EXTENDER_H
 		#define LEMON_BITS_BASE_EXTENDER_H
-		#include <lemon/bits/invalid.h>
+		#include <lemon/core.h>
 		#include <lemon/error.h>
 		#include <lemon/bits/map_extender.h>
 		#include <lemon/bits/default_map.h>
 		#include <lemon/concept_check.h>
 		#include <lemon/concepts/maps.h>

lemon/bits/graph_extender.h

Show inline comments

@@ -14,18 +14,17 @@
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_BITS_GRAPH_EXTENDER_H
 		#define LEMON_BITS_GRAPH_EXTENDER_H
 		#include <lemon/bits/invalid.h>
 		#include <lemon/bits/utility.h>
 		#include <lemon/core.h>
 		#include <lemon/bits/map_extender.h>
 		#include <lemon/bits/default_map.h>
 		#include <lemon/concept_check.h>
 		#include <lemon/concepts/maps.h>
 		///\ingroup graphbits

lemon/bits/traits.h

Show inline comments

@@ -14,23 +14,26 @@
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_BITS_TRAITS_H
 		#define LEMON_BITS_TRAITS_H
 		#include <lemon/bits/utility.h>
 		///\file
 		///\brief Traits for graphs and maps
 		///
 		#include <lemon/bits/enable_if.h>
 		namespace lemon {
 		  struct InvalidType {};
 		  template <typename _Graph, typename _Item>
 		  class ItemSetTraits {};
 		  template <typename Graph, typename Enable = void>
 		  struct NodeNotifierIndicator {
 		    typedef InvalidType Type;
 		  };

lemon/bits/vector_map.h

Show inline comments

@@ -17,19 +17,17 @@
 		 */
 		#ifndef LEMON_BITS_VECTOR_MAP_H
 		#define LEMON_BITS_VECTOR_MAP_H
 		#include <vector>
 		#include <algorithm>
 		#include <lemon/bits/traits.h>
 		#include <lemon/bits/utility.h>
+		#include <lemon/core.h>
 		#include <lemon/bits/alteration_notifier.h>
 		#include <lemon/concept_check.h>
 		#include <lemon/concepts/maps.h>
 		///\ingroup graphbits
 		///
 		///\file

lemon/concepts/digraph.h

Show inline comments

@@ -18,18 +18,17 @@
 		#ifndef LEMON_CONCEPT_DIGRAPH_H
 		#define LEMON_CONCEPT_DIGRAPH_H
 		///\ingroup graph_concepts
 		///\file
 		///\brief The concept of directed graphs.
 		#include <lemon/bits/invalid.h>
 		#include <lemon/bits/utility.h>
 		#include <lemon/core.h>
 		#include <lemon/concepts/maps.h>
 		#include <lemon/concept_check.h>
 		#include <lemon/concepts/graph_components.h>
 		namespace lemon {
 		  namespace concepts {
 		    /// \ingroup graph_concepts

lemon/concepts/graph.h

Show inline comments

@@ -20,17 +20,17 @@
 		///\file
 		///\brief The concept of Undirected Graphs.
 		#ifndef LEMON_CONCEPT_GRAPH_H
 		#define LEMON_CONCEPT_GRAPH_H
 		#include <lemon/concepts/graph_components.h>
 		#include <lemon/concepts/graph.h>
-		#include <lemon/bits/utility.h>
+		#include <lemon/core.h>
 		namespace lemon {
 		  namespace concepts {
 		    /// \ingroup graph_concepts
 		    ///
 		    /// \brief Class describing the concept of Undirected Graphs.
 		    ///

lemon/concepts/graph_components.h

Show inline comments

@@ -19,17 +19,17 @@
 		///\ingroup graph_concepts
 		///\file
 		///\brief The concept of graph components.
 		#ifndef LEMON_CONCEPT_GRAPH_COMPONENTS_H
 		#define LEMON_CONCEPT_GRAPH_COMPONENTS_H
-		#include <lemon/bits/invalid.h>
+		#include <lemon/core.h>
 		#include <lemon/concepts/maps.h>
 		#include <lemon/bits/alteration_notifier.h>
 		namespace lemon {
 		  namespace concepts {
 		    /// \brief Skeleton class for graph Node and Arc types

lemon/concepts/heap.h

Show inline comments

@@ -18,17 +18,17 @@
 		///\ingroup concept
 		///\file
 		///\brief The concept of heaps.
 		#ifndef LEMON_CONCEPT_HEAP_H
 		#define LEMON_CONCEPT_HEAP_H
-		#include <lemon/bits/invalid.h>
+		#include <lemon/core.h>
 		namespace lemon {
 		  namespace concepts {
 		    /// \addtogroup concept
 		    /// @{

lemon/concepts/maps.h

Show inline comments

@@ -14,17 +14,17 @@
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_CONCEPT_MAPS_H
 		#define LEMON_CONCEPT_MAPS_H
-		#include <lemon/bits/utility.h>
+		#include <lemon/core.h>
 		#include <lemon/concept_check.h>
 		///\ingroup concept
 		///\file
 		///\brief The concept of maps.
 		namespace lemon {

lemon/concepts/path.h

Show inline comments

@@ -20,18 +20,17 @@
 		///\file
 		///\brief Classes for representing paths in digraphs.
 		///
 		///\todo Iterators have obsolete style
 		#ifndef LEMON_CONCEPT_PATH_H
 		#define LEMON_CONCEPT_PATH_H
 		#include <lemon/bits/invalid.h>
 		#include <lemon/bits/utility.h>
 		#include <lemon/core.h>
 		#include <lemon/concept_check.h>
 		namespace lemon {
 		  namespace concepts {
 		    /// \addtogroup concept
 		    /// @{

lemon/dfs.h

Show inline comments

@@ -19,19 +19,18 @@
 		#ifndef LEMON_DFS_H
 		#define LEMON_DFS_H
 		///\ingroup search
 		///\file
 		///\brief Dfs algorithm.
 		#include <lemon/list_graph.h>
 		#include <lemon/graph_utils.h>
 		#include <lemon/bits/path_dump.h>
-		#include <lemon/bits/invalid.h>
+		#include <lemon/core.h>
 		#include <lemon/error.h>
 		#include <lemon/maps.h>
 		#include <lemon/concept_check.h>
 		namespace lemon {

lemon/dijkstra.h

Show inline comments

@@ -22,17 +22,17 @@
 		///\ingroup shortest_path
 		///\file
 		///\brief Dijkstra algorithm.
 		#include <limits>
 		#include <lemon/list_graph.h>
 		#include <lemon/bin_heap.h>
 		#include <lemon/bits/path_dump.h>
-		#include <lemon/bits/invalid.h>
+		#include <lemon/core.h>
 		#include <lemon/error.h>
 		#include <lemon/maps.h>
 		namespace lemon {
 		  /// \brief Default OperationTraits for the Dijkstra algorithm class.
 		  ///
 		  /// It defines all computational operations and constants which are

lemon/dim2.h

Show inline comments

@@ -15,17 +15,17 @@
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_DIM2_H
 		#define LEMON_DIM2_H
 		#include <iostream>
-		#include <lemon/bits/utility.h>
+		#include <lemon/core.h>
 		///\ingroup misc
 		///\file
 		///\brief A simple two dimensional vector and a bounding box implementation
 		///
 		/// The class \ref lemon::dim2::Point "dim2::Point" implements
 		/// a two dimensional vector with the usual operations.
 		///

lemon/graph_to_eps.h

Show inline comments

@@ -30,17 +30,17 @@
 		#include<ctime>
 		#else
 		#define WIN32_LEAN_AND_MEAN
 		#define NOMINMAX
 		#include<windows.h>
 		#endif
 		#include<lemon/math.h>
-		#include<lemon/bits/invalid.h>
+		#include<lemon/core.h>
 		#include<lemon/dim2.h>
 		#include<lemon/maps.h>
 		#include<lemon/color.h>
 		#include<lemon/bits/bezier.h>
 		///\ingroup eps_io
 		///\file

lemon/kruskal.h

Show inline comments

@@ -17,22 +17,19 @@
 		 */
 		#ifndef LEMON_KRUSKAL_H
 		#define LEMON_KRUSKAL_H
 		#include <algorithm>
 		#include <vector>
 		#include <lemon/unionfind.h>
 		// #include <lemon/graph_utils.h>
 		#include <lemon/maps.h>
 		// #include <lemon/radix_sort.h>
-		#include <lemon/bits/utility.h>
+		#include <lemon/core.h>
 		#include <lemon/bits/traits.h>
 		///\ingroup spantree
 		///\file
 		///\brief Kruskal's algorithm to compute a minimum cost spanning tree
 		///
 		///Kruskal's algorithm to compute a minimum cost spanning tree.
 		///

lemon/lgf_reader.h

Show inline comments

@@ -27,17 +27,17 @@
 		#include <iostream>
 		#include <fstream>
 		#include <sstream>
 		#include <set>
 		#include <map>
 		#include <lemon/assert.h>
-		#include <lemon/graph_utils.h>
+		#include <lemon/core.h>
 		#include <lemon/lgf_writer.h>
 		#include <lemon/concept_check.h>
 		#include <lemon/concepts/maps.h>
 		namespace lemon {

lemon/lgf_writer.h

Show inline comments

@@ -29,17 +29,18 @@
 		#include <sstream>
 		#include <algorithm>
 		#include <vector>
 		#include <functional>
 		#include <lemon/assert.h>
-		#include <lemon/graph_utils.h>
+		#include <lemon/core.h>
 		#include <lemon/maps.h>
 		namespace lemon {
 		  namespace _writer_bits {
 		    template <typename Value>
 		    struct DefaultConverter {
 		      std::string operator()(const Value& value) {

lemon/list_graph.h

Show inline comments

@@ -18,16 +18,18 @@
 		#ifndef LEMON_LIST_GRAPH_H
 		#define LEMON_LIST_GRAPH_H
 		///\ingroup graphs
 		///\file
 		///\brief ListDigraph, ListGraph classes.
 		#include <lemon/core.h>
 		#include <lemon/error.h>
 		#include <lemon/bits/graph_extender.h>
 		#include <vector>
 		#include <list>
 		namespace lemon {
 		  class ListDigraphBase {

lemon/maps.h

Show inline comments

@@ -18,18 +18,17 @@
 		#ifndef LEMON_MAPS_H
 		#define LEMON_MAPS_H
 		#include <iterator>
 		#include <functional>
 		#include <vector>
 		#include <lemon/bits/utility.h>
 		#include <lemon/bits/traits.h>
 		#include <lemon/core.h>
 		///\file
 		///\ingroup maps
 		///\brief Miscellaneous property maps
 		#include <map>
 		namespace lemon {
@@ -1775,12 +1774,932 @@
 		  /// \c ReachedMap for \ref Bfs, \ref Dfs and \ref Dijkstra algorithms.
 		  ///
 		  /// \relates LoggerBoolMap
 		  template<typename Iterator>
 		  inline LoggerBoolMap<Iterator> loggerBoolMap(Iterator it) {
 		    return LoggerBoolMap<Iterator>(it);
+		  }
 		  /// Provides an immutable and unique id for each item in the graph.
 		  /// The IdMap class provides a unique and immutable id for each item of the
 		  /// same type (e.g. node) in the graph. This id is <ul><li>\b unique:
 		  /// different items (nodes) get different ids <li>\b immutable: the id of an
 		  /// item (node) does not change (even if you delete other nodes).  </ul>
 		  /// Through this map you get access (i.e. can read) the inner id values of
 		  /// the items stored in the graph. This map can be inverted with its member
 		  /// class \c InverseMap or with the \c operator() member.
 		  ///
 		  template <typename _Graph, typename _Item>
 		  class IdMap {
 		  public:
 		    typedef _Graph Graph;
 		    typedef int Value;
 		    typedef _Item Item;
 		    typedef _Item Key;
 		    /// \brief Constructor.
 		    ///
 		    /// Constructor of the map.
 		    explicit IdMap(const Graph& graph) : _graph(&graph) {}
 		    /// \brief Gives back the \e id of the item.
 		    ///
 		    /// Gives back the immutable and unique \e id of the item.
 		    int operator[](const Item& item) const { return _graph->id(item);}
 		    /// \brief Gives back the item by its id.
 		    ///
 		    /// Gives back the item by its id.
 		    Item operator()(int id) { return _graph->fromId(id, Item()); }
 		  private:
 		    const Graph* _graph;
 		  public:
 		    /// \brief The class represents the inverse of its owner (IdMap).
 		    ///
 		    /// The class represents the inverse of its owner (IdMap).
 		    /// \see inverse()
 		    class InverseMap {
 		    public:
 		      /// \brief Constructor.
 		      ///
 		      /// Constructor for creating an id-to-item map.
 		      explicit InverseMap(const Graph& graph) : _graph(&graph) {}
 		      /// \brief Constructor.
 		      ///
 		      /// Constructor for creating an id-to-item map.
 		      explicit InverseMap(const IdMap& map) : _graph(map._graph) {}
 		      /// \brief Gives back the given item from its id.
 		      ///
 		      /// Gives back the given item from its id.
 		      ///
 		      Item operator[](int id) const { return _graph->fromId(id, Item());}
 		    private:
 		      const Graph* _graph;
 		    };
 		    /// \brief Gives back the inverse of the map.
 		    ///
 		    /// Gives back the inverse of the IdMap.
 		    InverseMap inverse() const { return InverseMap(*_graph);}
 		  };
 		  /// \brief General invertable graph-map type.
 		  /// This type provides simple invertable graph-maps.
 		  /// The InvertableMap wraps an arbitrary ReadWriteMap
 		  /// and if a key is set to a new value then store it
 		  /// in the inverse map.
 		  ///
 		  /// The values of the map can be accessed
 		  /// with stl compatible forward iterator.
 		  ///
 		  /// \tparam _Graph The graph type.
 		  /// \tparam _Item The item type of the graph.
 		  /// \tparam _Value The value type of the map.
 		  ///
 		  /// \see IterableValueMap
 		  template <typename _Graph, typename _Item, typename _Value>
 		  class InvertableMap
 		    : protected ItemSetTraits<_Graph, _Item>::template Map<_Value>::Type {
 		  private:
 		    typedef typename ItemSetTraits<_Graph, _Item>::
 		    template Map<_Value>::Type Map;
 		    typedef _Graph Graph;
 		    typedef std::map<_Value, _Item> Container;
 		    Container _inv_map;
 		  public:
 		    /// The key type of InvertableMap (Node, Arc, Edge).
 		    typedef typename Map::Key Key;
 		    /// The value type of the InvertableMap.
 		    typedef typename Map::Value Value;
 		    /// \brief Constructor.
 		    ///
 		    /// Construct a new InvertableMap for the graph.
 		    ///
 		    explicit InvertableMap(const Graph& graph) : Map(graph) {}
 		    /// \brief Forward iterator for values.
 		    ///
 		    /// This iterator is an stl compatible forward
 		    /// iterator on the values of the map. The values can
 		    /// be accessed in the [beginValue, endValue) range.
 		    ///
 		    class ValueIterator
 		      : public std::iterator<std::forward_iterator_tag, Value> {
 		      friend class InvertableMap;
 		    private:
 		      ValueIterator(typename Container::const_iterator _it)
 		        : it(_it) {}
 		    public:
 		      ValueIterator() {}
 		      ValueIterator& operator++() { ++it; return *this; }
 		      ValueIterator operator++(int) {
 		        ValueIterator tmp(*this);
 		        operator++();
 		        return tmp;
+		      }
 		      const Value& operator*() const { return it->first; }
 		      const Value* operator->() const { return &(it->first); }
 		      bool operator==(ValueIterator jt) const { return it == jt.it; }
 		      bool operator!=(ValueIterator jt) const { return it != jt.it; }
 		    private:
 		      typename Container::const_iterator it;
 		    };
 		    /// \brief Returns an iterator to the first value.
 		    ///
 		    /// Returns an stl compatible iterator to the
 		    /// first value of the map. The values of the
 		    /// map can be accessed in the [beginValue, endValue)
 		    /// range.
 		    ValueIterator beginValue() const {
 		      return ValueIterator(_inv_map.begin());
+		    }
 		    /// \brief Returns an iterator after the last value.
 		    ///
 		    /// Returns an stl compatible iterator after the
 		    /// last value of the map. The values of the
 		    /// map can be accessed in the [beginValue, endValue)
 		    /// range.
 		    ValueIterator endValue() const {
 		      return ValueIterator(_inv_map.end());
+		    }
 		    /// \brief The setter function of the map.
 		    ///
 		    /// Sets the mapped value.
 		    void set(const Key& key, const Value& val) {
 		      Value oldval = Map::operator[](key);
 		      typename Container::iterator it = _inv_map.find(oldval);
 		      if (it != _inv_map.end() && it->second == key) {
 		        _inv_map.erase(it);
+		      }
 		      _inv_map.insert(make_pair(val, key));
 		      Map::set(key, val);
+		    }
 		    /// \brief The getter function of the map.
 		    ///
 		    /// It gives back the value associated with the key.
 		    typename MapTraits<Map>::ConstReturnValue
 		    operator[](const Key& key) const {
 		      return Map::operator[](key);
+		    }
 		    /// \brief Gives back the item by its value.
 		    ///
 		    /// Gives back the item by its value.
 		    Key operator()(const Value& key) const {
 		      typename Container::const_iterator it = _inv_map.find(key);
 		      return it != _inv_map.end() ? it->second : INVALID;
+		    }
 		  protected:
 		    /// \brief Erase the key from the map.
 		    ///
 		    /// Erase the key to the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void erase(const Key& key) {
 		      Value val = Map::operator[](key);
 		      typename Container::iterator it = _inv_map.find(val);
 		      if (it != _inv_map.end() && it->second == key) {
 		        _inv_map.erase(it);
+		      }
 		      Map::erase(key);
+		    }
 		    /// \brief Erase more keys from the map.
 		    ///
 		    /// Erase more keys from the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void erase(const std::vector<Key>& keys) {
 		      for (int i = 0; i < int(keys.size()); ++i) {
 		        Value val = Map::operator[](keys[i]);
 		        typename Container::iterator it = _inv_map.find(val);
 		        if (it != _inv_map.end() && it->second == keys[i]) {
 		          _inv_map.erase(it);
+		        }
+		      }
 		      Map::erase(keys);
+		    }
 		    /// \brief Clear the keys from the map and inverse map.
 		    ///
 		    /// Clear the keys from the map and inverse map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void clear() {
 		      _inv_map.clear();
 		      Map::clear();
+		    }
 		  public:
 		    /// \brief The inverse map type.
 		    ///
 		    /// The inverse of this map. The subscript operator of the map
 		    /// gives back always the item what was last assigned to the value.
 		    class InverseMap {
 		    public:
 		      /// \brief Constructor of the InverseMap.
 		      ///
 		      /// Constructor of the InverseMap.
 		      explicit InverseMap(const InvertableMap& inverted)
 		        : _inverted(inverted) {}
 		      /// The value type of the InverseMap.
 		      typedef typename InvertableMap::Key Value;
 		      /// The key type of the InverseMap.
 		      typedef typename InvertableMap::Value Key;
 		      /// \brief Subscript operator.
 		      ///
 		      /// Subscript operator. It gives back always the item
 		      /// what was last assigned to the value.
 		      Value operator[](const Key& key) const {
 		        return _inverted(key);
+		      }
 		    private:
 		      const InvertableMap& _inverted;
 		    };
 		    /// \brief It gives back the just readable inverse map.
 		    ///
 		    /// It gives back the just readable inverse map.
 		    InverseMap inverse() const {
 		      return InverseMap(*this);
+		    }
 		  };
 		  /// \brief Provides a mutable, continuous and unique descriptor for each
 		  /// item in the graph.
 		  ///
 		  /// The DescriptorMap class provides a unique and continuous (but mutable)
 		  /// descriptor (id) for each item of the same type (e.g. node) in the
 		  /// graph. This id is <ul><li>\b unique: different items (nodes) get
 		  /// different ids <li>\b continuous: the range of the ids is the set of
 		  /// integers between 0 and \c n-1, where \c n is the number of the items of
 		  /// this type (e.g. nodes) (so the id of a node can change if you delete an
 		  /// other node, i.e. this id is mutable).  </ul> This map can be inverted
 		  /// with its member class \c InverseMap, or with the \c operator() member.
 		  ///
 		  /// \tparam _Graph The graph class the \c DescriptorMap belongs to.
 		  /// \tparam _Item The Item is the Key of the Map. It may be Node, Arc or
 		  /// Edge.
 		  template <typename _Graph, typename _Item>
 		  class DescriptorMap
 		    : protected ItemSetTraits<_Graph, _Item>::template Map<int>::Type {
 		    typedef _Item Item;
 		    typedef typename ItemSetTraits<_Graph, _Item>::template Map<int>::Type Map;
 		  public:
 		    /// The graph class of DescriptorMap.
 		    typedef _Graph Graph;
 		    /// The key type of DescriptorMap (Node, Arc, Edge).
 		    typedef typename Map::Key Key;
 		    /// The value type of DescriptorMap.
 		    typedef typename Map::Value Value;
 		    /// \brief Constructor.
 		    ///
 		    /// Constructor for descriptor map.
 		    explicit DescriptorMap(const Graph& _graph) : Map(_graph) {
 		      Item it;
 		      const typename Map::Notifier* nf = Map::notifier();
 		      for (nf->first(it); it != INVALID; nf->next(it)) {
 		        Map::set(it, _inv_map.size());
 		        _inv_map.push_back(it);
+		      }
+		    }
 		  protected:
 		    /// \brief Add a new key to the map.
 		    ///
 		    /// Add a new key to the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void add(const Item& item) {
 		      Map::add(item);
 		      Map::set(item, _inv_map.size());
 		      _inv_map.push_back(item);
+		    }
 		    /// \brief Add more new keys to the map.
 		    ///
 		    /// Add more new keys to the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void add(const std::vector<Item>& items) {
 		      Map::add(items);
 		      for (int i = 0; i < int(items.size()); ++i) {
 		        Map::set(items[i], _inv_map.size());
 		        _inv_map.push_back(items[i]);
+		      }
+		    }
 		    /// \brief Erase the key from the map.
 		    ///
 		    /// Erase the key from the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void erase(const Item& item) {
 		      Map::set(_inv_map.back(), Map::operator[](item));
 		      _inv_map[Map::operator[](item)] = _inv_map.back();
 		      _inv_map.pop_back();
 		      Map::erase(item);
+		    }
 		    /// \brief Erase more keys from the map.
 		    ///
 		    /// Erase more keys from the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void erase(const std::vector<Item>& items) {
 		      for (int i = 0; i < int(items.size()); ++i) {
 		        Map::set(_inv_map.back(), Map::operator[](items[i]));
 		        _inv_map[Map::operator[](items[i])] = _inv_map.back();
 		        _inv_map.pop_back();
+		      }
 		      Map::erase(items);
+		    }
 		    /// \brief Build the unique map.
 		    ///
 		    /// Build the unique map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void build() {
 		      Map::build();
 		      Item it;
 		      const typename Map::Notifier* nf = Map::notifier();
 		      for (nf->first(it); it != INVALID; nf->next(it)) {
 		        Map::set(it, _inv_map.size());
 		        _inv_map.push_back(it);
+		      }
+		    }
 		    /// \brief Clear the keys from the map.
 		    ///
 		    /// Clear the keys from the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void clear() {
 		      _inv_map.clear();
 		      Map::clear();
+		    }
 		  public:
 		    /// \brief Returns the maximal value plus one.
 		    ///
 		    /// Returns the maximal value plus one in the map.
 		    unsigned int size() const {
 		      return _inv_map.size();
+		    }
 		    /// \brief Swaps the position of the two items in the map.
 		    ///
 		    /// Swaps the position of the two items in the map.
 		    void swap(const Item& p, const Item& q) {
 		      int pi = Map::operator[](p);
 		      int qi = Map::operator[](q);
 		      Map::set(p, qi);
 		      _inv_map[qi] = p;
 		      Map::set(q, pi);
 		      _inv_map[pi] = q;
+		    }
 		    /// \brief Gives back the \e descriptor of the item.
 		    ///
 		    /// Gives back the mutable and unique \e descriptor of the map.
 		    int operator[](const Item& item) const {
 		      return Map::operator[](item);
+		    }
 		    /// \brief Gives back the item by its descriptor.
 		    ///
 		    /// Gives back th item by its descriptor.
 		    Item operator()(int id) const {
 		      return _inv_map[id];
+		    }
 		  private:
 		    typedef std::vector<Item> Container;
 		    Container _inv_map;
 		  public:
 		    /// \brief The inverse map type of DescriptorMap.
 		    ///
 		    /// The inverse map type of DescriptorMap.
 		    class InverseMap {
 		    public:
 		      /// \brief Constructor of the InverseMap.
 		      ///
 		      /// Constructor of the InverseMap.
 		      explicit InverseMap(const DescriptorMap& inverted)
 		        : _inverted(inverted) {}
 		      /// The value type of the InverseMap.
 		      typedef typename DescriptorMap::Key Value;
 		      /// The key type of the InverseMap.
 		      typedef typename DescriptorMap::Value Key;
 		      /// \brief Subscript operator.
 		      ///
 		      /// Subscript operator. It gives back the item
 		      /// that the descriptor belongs to currently.
 		      Value operator[](const Key& key) const {
 		        return _inverted(key);
+		      }
 		      /// \brief Size of the map.
 		      ///
 		      /// Returns the size of the map.
 		      unsigned int size() const {
 		        return _inverted.size();
+		      }
 		    private:
 		      const DescriptorMap& _inverted;
 		    };
 		    /// \brief Gives back the inverse of the map.
 		    ///
 		    /// Gives back the inverse of the map.
 		    const InverseMap inverse() const {
 		      return InverseMap(*this);
+		    }
 		  };
 		  /// \brief Returns the source of the given arc.
 		  ///
 		  /// The SourceMap gives back the source Node of the given arc.
 		  /// \see TargetMap
 		  template <typename Digraph>
 		  class SourceMap {
 		  public:
 		    typedef typename Digraph::Node Value;
 		    typedef typename Digraph::Arc Key;
 		    /// \brief Constructor
 		    ///
 		    /// Constructor
 		    /// \param _digraph The digraph that the map belongs to.
 		    explicit SourceMap(const Digraph& digraph) : _digraph(digraph) {}
 		    /// \brief The subscript operator.
 		    ///
 		    /// The subscript operator.
 		    /// \param arc The arc
 		    /// \return The source of the arc
 		    Value operator[](const Key& arc) const {
 		      return _digraph.source(arc);
+		    }
 		  private:
 		    const Digraph& _digraph;
 		  };
 		  /// \brief Returns a \ref SourceMap class.
 		  ///
 		  /// This function just returns an \ref SourceMap class.
 		  /// \relates SourceMap
 		  template <typename Digraph>
 		  inline SourceMap<Digraph> sourceMap(const Digraph& digraph) {
 		    return SourceMap<Digraph>(digraph);
+		  }
 		  /// \brief Returns the target of the given arc.
 		  ///
 		  /// The TargetMap gives back the target Node of the given arc.
 		  /// \see SourceMap
 		  template <typename Digraph>
 		  class TargetMap {
 		  public:
 		    typedef typename Digraph::Node Value;
 		    typedef typename Digraph::Arc Key;
 		    /// \brief Constructor
 		    ///
 		    /// Constructor
 		    /// \param _digraph The digraph that the map belongs to.
 		    explicit TargetMap(const Digraph& digraph) : _digraph(digraph) {}
 		    /// \brief The subscript operator.
 		    ///
 		    /// The subscript operator.
 		    /// \param e The arc
 		    /// \return The target of the arc
 		    Value operator[](const Key& e) const {
 		      return _digraph.target(e);
+		    }
 		  private:
 		    const Digraph& _digraph;
 		  };
 		  /// \brief Returns a \ref TargetMap class.
 		  ///
 		  /// This function just returns a \ref TargetMap class.
 		  /// \relates TargetMap
 		  template <typename Digraph>
 		  inline TargetMap<Digraph> targetMap(const Digraph& digraph) {
 		    return TargetMap<Digraph>(digraph);
+		  }
 		  /// \brief Returns the "forward" directed arc view of an edge.
 		  ///
 		  /// Returns the "forward" directed arc view of an edge.
 		  /// \see BackwardMap
 		  template <typename Graph>
 		  class ForwardMap {
 		  public:
 		    typedef typename Graph::Arc Value;
 		    typedef typename Graph::Edge Key;
 		    /// \brief Constructor
 		    ///
 		    /// Constructor
 		    /// \param _graph The graph that the map belongs to.
 		    explicit ForwardMap(const Graph& graph) : _graph(graph) {}
 		    /// \brief The subscript operator.
 		    ///
 		    /// The subscript operator.
 		    /// \param key An edge
 		    /// \return The "forward" directed arc view of edge
 		    Value operator[](const Key& key) const {
 		      return _graph.direct(key, true);
+		    }
 		  private:
 		    const Graph& _graph;
 		  };
 		  /// \brief Returns a \ref ForwardMap class.
 		  ///
 		  /// This function just returns an \ref ForwardMap class.
 		  /// \relates ForwardMap
 		  template <typename Graph>
 		  inline ForwardMap<Graph> forwardMap(const Graph& graph) {
 		    return ForwardMap<Graph>(graph);
+		  }
 		  /// \brief Returns the "backward" directed arc view of an edge.
 		  ///
 		  /// Returns the "backward" directed arc view of an edge.
 		  /// \see ForwardMap
 		  template <typename Graph>
 		  class BackwardMap {
 		  public:
 		    typedef typename Graph::Arc Value;
 		    typedef typename Graph::Edge Key;
 		    /// \brief Constructor
 		    ///
 		    /// Constructor
 		    /// \param _graph The graph that the map belongs to.
 		    explicit BackwardMap(const Graph& graph) : _graph(graph) {}
 		    /// \brief The subscript operator.
 		    ///
 		    /// The subscript operator.
 		    /// \param key An edge
 		    /// \return The "backward" directed arc view of edge
 		    Value operator[](const Key& key) const {
 		      return _graph.direct(key, false);
+		    }
 		  private:
 		    const Graph& _graph;
 		  };
 		  /// \brief Returns a \ref BackwardMap class
 		  /// This function just returns a \ref BackwardMap class.
 		  /// \relates BackwardMap
 		  template <typename Graph>
 		  inline BackwardMap<Graph> backwardMap(const Graph& graph) {
 		    return BackwardMap<Graph>(graph);
+		  }
 		  /// \brief Potential difference map
 		  ///
 		  /// If there is an potential map on the nodes then we
 		  /// can get an arc map as we get the substraction of the
 		  /// values of the target and source.
 		  template <typename Digraph, typename NodeMap>
 		  class PotentialDifferenceMap {
 		  public:
 		    typedef typename Digraph::Arc Key;
 		    typedef typename NodeMap::Value Value;
 		    /// \brief Constructor
 		    ///
 		    /// Contructor of the map
 		    explicit PotentialDifferenceMap(const Digraph& digraph,
 		                                    const NodeMap& potential)
 		      : _digraph(digraph), _potential(potential) {}
 		    /// \brief Const subscription operator
 		    ///
 		    /// Const subscription operator
 		    Value operator[](const Key& arc) const {
 		      return _potential[_digraph.target(arc)] -
 		        _potential[_digraph.source(arc)];
+		    }
 		  private:
 		    const Digraph& _digraph;
 		    const NodeMap& _potential;
 		  };
 		  /// \brief Returns a PotentialDifferenceMap.
 		  ///
 		  /// This function just returns a PotentialDifferenceMap.
 		  /// \relates PotentialDifferenceMap
 		  template <typename Digraph, typename NodeMap>
 		  PotentialDifferenceMap<Digraph, NodeMap>
 		  potentialDifferenceMap(const Digraph& digraph, const NodeMap& potential) {
 		    return PotentialDifferenceMap<Digraph, NodeMap>(digraph, potential);
+		  }
 		  /// \brief Map of the node in-degrees.
 		  ///
 		  /// This map returns the in-degree of a node. Once it is constructed,
 		  /// the degrees are stored in a standard NodeMap, so each query is done
 		  /// in constant time. On the other hand, the values are updated automatically
 		  /// whenever the digraph changes.
 		  ///
 		  /// \warning Besides addNode() and addArc(), a digraph structure may provide
 		  /// alternative ways to modify the digraph. The correct behavior of InDegMap
 		  /// is not guarantied if these additional features are used. For example
 		  /// the functions \ref ListDigraph::changeSource() "changeSource()",
 		  /// \ref ListDigraph::changeTarget() "changeTarget()" and
 		  /// \ref ListDigraph::reverseArc() "reverseArc()"
 		  /// of \ref ListDigraph will \e not update the degree values correctly.
 		  ///
 		  /// \sa OutDegMap
 		  template <typename _Digraph>
 		  class InDegMap
 		    : protected ItemSetTraits<_Digraph, typename _Digraph::Arc>
 		      ::ItemNotifier::ObserverBase {
 		  public:
 		    typedef _Digraph Digraph;
 		    typedef int Value;
 		    typedef typename Digraph::Node Key;
 		    typedef typename ItemSetTraits<Digraph, typename Digraph::Arc>
 		    ::ItemNotifier::ObserverBase Parent;
 		  private:
 		    class AutoNodeMap
 		      : public ItemSetTraits<Digraph, Key>::template Map<int>::Type {
 		    public:
 		      typedef typename ItemSetTraits<Digraph, Key>::
 		      template Map<int>::Type Parent;
 		      AutoNodeMap(const Digraph& digraph) : Parent(digraph, 0) {}
 		      virtual void add(const Key& key) {
 		        Parent::add(key);
 		        Parent::set(key, 0);
+		      }
 		      virtual void add(const std::vector<Key>& keys) {
 		        Parent::add(keys);
 		        for (int i = 0; i < int(keys.size()); ++i) {
 		          Parent::set(keys[i], 0);
+		        }
+		      }
 		      virtual void build() {
 		        Parent::build();
 		        Key it;
 		        typename Parent::Notifier* nf = Parent::notifier();
 		        for (nf->first(it); it != INVALID; nf->next(it)) {
 		          Parent::set(it, 0);
+		        }
+		      }
 		    };
 		  public:
 		    /// \brief Constructor.
 		    ///
 		    /// Constructor for creating in-degree map.
 		    explicit InDegMap(const Digraph& digraph)
 		      : _digraph(digraph), _deg(digraph) {
 		      Parent::attach(_digraph.notifier(typename Digraph::Arc()));
 		      for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
 		        _deg[it] = countInArcs(_digraph, it);
+		      }
+		    }
 		    /// Gives back the in-degree of a Node.
 		    int operator[](const Key& key) const {
 		      return _deg[key];
+		    }
 		  protected:
 		    typedef typename Digraph::Arc Arc;
 		    virtual void add(const Arc& arc) {
 		      ++_deg[_digraph.target(arc)];
+		    }
 		    virtual void add(const std::vector<Arc>& arcs) {
 		      for (int i = 0; i < int(arcs.size()); ++i) {
 		        ++_deg[_digraph.target(arcs[i])];
+		      }
+		    }
 		    virtual void erase(const Arc& arc) {
 		      --_deg[_digraph.target(arc)];
+		    }
 		    virtual void erase(const std::vector<Arc>& arcs) {
 		      for (int i = 0; i < int(arcs.size()); ++i) {
 		        --_deg[_digraph.target(arcs[i])];
+		      }
+		    }
 		    virtual void build() {
 		      for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
 		        _deg[it] = countInArcs(_digraph, it);
+		      }
+		    }
 		    virtual void clear() {
 		      for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
 		        _deg[it] = 0;
+		      }
+		    }
 		  private:
 		    const Digraph& _digraph;
 		    AutoNodeMap _deg;
 		  };
 		  /// \brief Map of the node out-degrees.
 		  ///
 		  /// This map returns the out-degree of a node. Once it is constructed,
 		  /// the degrees are stored in a standard NodeMap, so each query is done
 		  /// in constant time. On the other hand, the values are updated automatically
 		  /// whenever the digraph changes.
 		  ///
 		  /// \warning Besides addNode() and addArc(), a digraph structure may provide
 		  /// alternative ways to modify the digraph. The correct behavior of OutDegMap
 		  /// is not guarantied if these additional features are used. For example
 		  /// the functions \ref ListDigraph::changeSource() "changeSource()",
 		  /// \ref ListDigraph::changeTarget() "changeTarget()" and
 		  /// \ref ListDigraph::reverseArc() "reverseArc()"
 		  /// of \ref ListDigraph will \e not update the degree values correctly.
 		  ///
 		  /// \sa InDegMap
 		  template <typename _Digraph>
 		  class OutDegMap
 		    : protected ItemSetTraits<_Digraph, typename _Digraph::Arc>
 		      ::ItemNotifier::ObserverBase {
 		  public:
 		    typedef _Digraph Digraph;
 		    typedef int Value;
 		    typedef typename Digraph::Node Key;
 		    typedef typename ItemSetTraits<Digraph, typename Digraph::Arc>
 		    ::ItemNotifier::ObserverBase Parent;
 		  private:
 		    class AutoNodeMap
 		      : public ItemSetTraits<Digraph, Key>::template Map<int>::Type {
 		    public:
 		      typedef typename ItemSetTraits<Digraph, Key>::
 		      template Map<int>::Type Parent;
 		      AutoNodeMap(const Digraph& digraph) : Parent(digraph, 0) {}
 		      virtual void add(const Key& key) {
 		        Parent::add(key);
 		        Parent::set(key, 0);
+		      }
 		      virtual void add(const std::vector<Key>& keys) {
 		        Parent::add(keys);
 		        for (int i = 0; i < int(keys.size()); ++i) {
 		          Parent::set(keys[i], 0);
+		        }
+		      }
 		      virtual void build() {
 		        Parent::build();
 		        Key it;
 		        typename Parent::Notifier* nf = Parent::notifier();
 		        for (nf->first(it); it != INVALID; nf->next(it)) {
 		          Parent::set(it, 0);
+		        }
+		      }
 		    };
 		  public:
 		    /// \brief Constructor.
 		    ///
 		    /// Constructor for creating out-degree map.
 		    explicit OutDegMap(const Digraph& digraph)
 		      : _digraph(digraph), _deg(digraph) {
 		      Parent::attach(_digraph.notifier(typename Digraph::Arc()));
 		      for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
 		        _deg[it] = countOutArcs(_digraph, it);
+		      }
+		    }
 		    /// Gives back the out-degree of a Node.
 		    int operator[](const Key& key) const {
 		      return _deg[key];
+		    }
 		  protected:
 		    typedef typename Digraph::Arc Arc;
 		    virtual void add(const Arc& arc) {
 		      ++_deg[_digraph.source(arc)];
+		    }
 		    virtual void add(const std::vector<Arc>& arcs) {
 		      for (int i = 0; i < int(arcs.size()); ++i) {
 		        ++_deg[_digraph.source(arcs[i])];
+		      }
+		    }
 		    virtual void erase(const Arc& arc) {
 		      --_deg[_digraph.source(arc)];
+		    }
 		    virtual void erase(const std::vector<Arc>& arcs) {
 		      for (int i = 0; i < int(arcs.size()); ++i) {
 		        --_deg[_digraph.source(arcs[i])];
+		      }
+		    }
 		    virtual void build() {
 		      for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
 		        _deg[it] = countOutArcs(_digraph, it);
+		      }
+		    }
 		    virtual void clear() {
 		      for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
 		        _deg[it] = 0;
+		      }
+		    }
 		  private:
 		    const Digraph& _digraph;
 		    AutoNodeMap _deg;
 		  };
 		  /// @}
+		}
 		#endif // LEMON_MAPS_H

lemon/path.h

Show inline comments

@@ -23,17 +23,17 @@
 		#ifndef LEMON_PATH_H
 		#define LEMON_PATH_H
 		#include <vector>
 		#include <algorithm>
 		#include <lemon/error.h>
-		#include <lemon/bits/invalid.h>
+		#include <lemon/core.h>
 		#include <lemon/concepts/path.h>
 		namespace lemon {
 		  /// \addtogroup paths
 		  /// @{

lemon/smart_graph.h

Show inline comments

@@ -20,24 +20,18 @@
 		#define LEMON_SMART_GRAPH_H
 		///\ingroup graphs
 		///\file
 		///\brief SmartDigraph and SmartGraph classes.
 		#include <vector>
 		#include <lemon/bits/invalid.h>
 		#include <lemon/bits/base_extender.h>
 		#include <lemon/bits/graph_extender.h>
 		#include <lemon/bits/utility.h>
 		#include <lemon/core.h>
 		#include <lemon/error.h>
 		#include <lemon/bits/graph_extender.h>
 		namespace lemon {
 		  class SmartDigraph;
 		  ///Base of SmartDigraph
 		  ///Base of SmartDigraph

lemon/unionfind.h

Show inline comments

@@ -25,17 +25,17 @@
 		//!
 		#include <vector>
 		#include <list>
 		#include <utility>
 		#include <algorithm>
 		#include <functional>
-		#include <lemon/bits/invalid.h>
+		#include <lemon/core.h>
 		namespace lemon {
 		  /// \ingroup auxdat
 		  ///
 		  /// \brief A \e Union-Find data structure implementation
 		  ///
 		  /// The class implements the \e Union-Find data structure.

test/dijkstra_test.cc

Show inline comments

@@ -14,17 +14,16 @@
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#include <lemon/concepts/digraph.h>
 		#include <lemon/smart_graph.h>
 		#include <lemon/list_graph.h>
 		#include <lemon/graph_utils.h>
 		#include <lemon/dijkstra.h>
 		#include <lemon/path.h>
 		#include "graph_test.h"
 		#include "test_tools.h"
 		using namespace lemon;

test/graph_copy_test.cc

Show inline comments

@@ -14,17 +14,16 @@
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#include <lemon/smart_graph.h>
 		#include <lemon/list_graph.h>
 		#include <lemon/lgf_reader.h>
 		#include <lemon/graph_utils.h>
 		#include <lemon/error.h>
 		#include "test_tools.h"
 		using namespace std;
 		using namespace lemon;
 		void digraph_copy_test() {

test/graph_test.h

Show inline comments

@@ -14,17 +14,17 @@
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#ifndef LEMON_TEST_GRAPH_TEST_H
 		#define LEMON_TEST_GRAPH_TEST_H
-		#include <lemon/graph_utils.h>
+		#include <lemon/core.h>
 		#include "test_tools.h"
 		namespace lemon {
 		  template<class Graph>
 		  void checkGraphNodeList(const Graph &G, int cnt)
+		  {
 		    typename Graph::NodeIt n(G);

test/graph_utils_test.cc

Show inline comments

@@ -15,19 +15,19 @@
 		 * purpose.
+		 *
 		 */
 		#include <cstdlib>
 		#include <ctime>
 		#include <lemon/random.h>
 		#include <lemon/graph_utils.h>
 		#include <lemon/list_graph.h>
 		#include <lemon/smart_graph.h>
 		#include <lemon/maps.h>
 		#include "graph_test.h"
 		#include "test_tools.h"
 		using namespace lemon;
 		template <typename Digraph>
 		void checkFindArcs() {

lemon/bits/invalid.h

Show inline comments

 		/* -*- mode: C++; indent-tabs-mode: nil; -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library.
+		 *
 		 * Copyright (C) 2003-2008
 		 * 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_BITS_INVALID_H
 		#define LEMON_BITS_INVALID_H
 		///\file
 		///\brief Definition of INVALID.
 		namespace lemon {
 		  /// \brief Dummy type to make it easier to create invalid iterators.
 		  ///
 		  /// Dummy type to make it easier to create invalid iterators.
 		  /// See \ref INVALID for the usage.
 		  struct Invalid {
 		  public:
 		    bool operator==(Invalid) { return true;  }
 		    bool operator!=(Invalid) { return false; }
 		    bool operator< (Invalid) { return false; }
 		  };
 		  /// \brief Invalid iterators.
 		  ///
 		  /// \ref Invalid is a global type that converts to each iterator
 		  /// in such a way that the value of the target iterator will be invalid.
 		  //Some people didn't like this:
 		  //const Invalid &INVALID = *(Invalid *)0;
 		#ifdef LEMON_ONLY_TEMPLATES
 		  const Invalid INVALID = Invalid();
 		#else
 		  extern const Invalid INVALID;
 		#endif
 		} //namespace lemon
 		#endif

lemon/bits/utility.h

Show inline comments

 		/* -*- mode: C++; indent-tabs-mode: nil; -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library.
+		 *
 		 * Copyright (C) 2003-2008
 		 * 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.
+		 *
 		 */
 		// This file contains a modified version of the enable_if library from BOOST.
 		// See the appropriate copyright notice below.
 		// Boost enable_if library
 		// Copyright 2003 (c) The Trustees of Indiana University.
 		// Use, modification, and distribution is subject to the Boost Software
 		// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
 		// http://www.boost.org/LICENSE_1_0.txt)
 		//    Authors: Jaakko Jarvi (jajarvi at osl.iu.edu)
 		//             Jeremiah Willcock (jewillco at osl.iu.edu)
 		//             Andrew Lumsdaine (lums at osl.iu.edu)
 		#ifndef LEMON_BITS_UTILITY_H
 		#define LEMON_BITS_UTILITY_H
 		///\file
 		///\brief Miscellaneous basic utilities
 		///
 		///\todo Please rethink the organisation of the basic files like this.
 		///E.g. this file might be merged with invalid.h.
 		namespace lemon
+		{
 		  /// Basic type for defining "tags". A "YES" condition for \c enable_if.
 		  /// Basic type for defining "tags". A "YES" condition for \c enable_if.
 		  ///
 		  ///\sa False
 		  ///
 		  /// \todo This should go to a separate "basic_types.h" (or something)
 		  /// file.
 		  struct True {
 		    ///\e
 		    static const bool value = true;
 		  };
 		  /// Basic type for defining "tags". A "NO" condition for \c enable_if.
 		  /// Basic type for defining "tags". A "NO" condition for \c enable_if.
 		  ///
 		  ///\sa True
 		  struct False {
 		    ///\e
 		    static const bool value = false;
 		  };
 		  struct InvalidType {
 		  };
 		  template <typename T>
 		  struct Wrap {
 		    const T &value;
 		    Wrap(const T &t) : value(t) {}
 		  };
 		  /**************** dummy class to avoid ambiguity ****************/
 		  template<int T> struct dummy { dummy(int) {} };
 		  /**************** enable_if from BOOST ****************/
 		  template <typename Type, typename T = void>
 		  struct exists {
 		    typedef T type;
 		  };
 		  template <bool B, class T = void>
 		  struct enable_if_c {
 		    typedef T type;
 		  };
 		  template <class T>
 		  struct enable_if_c<false, T> {};
 		  template <class Cond, class T = void>
 		  struct enable_if : public enable_if_c<Cond::value, T> {};
 		  template <bool B, class T>
 		  struct lazy_enable_if_c {
 		    typedef typename T::type type;
 		  };
 		  template <class T>
 		  struct lazy_enable_if_c<false, T> {};
 		  template <class Cond, class T>
 		  struct lazy_enable_if : public lazy_enable_if_c<Cond::value, T> {};
 		  template <bool B, class T = void>
 		  struct disable_if_c {
 		    typedef T type;
 		  };
 		  template <class T>
 		  struct disable_if_c<true, T> {};
 		  template <class Cond, class T = void>
 		  struct disable_if : public disable_if_c<Cond::value, T> {};
 		  template <bool B, class T>
 		  struct lazy_disable_if_c {
 		    typedef typename T::type type;
 		  };
 		  template <class T>
 		  struct lazy_disable_if_c<true, T> {};
 		  template <class Cond, class T>
 		  struct lazy_disable_if : public lazy_disable_if_c<Cond::value, T> {};
 		} // namespace lemon
 		#endif

lemon/graph_utils.h

Show inline comments

 		/* -*- mode: C++; indent-tabs-mode: nil; -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library.
+		 *
 		 * Copyright (C) 2003-2008
 		 * 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_GRAPH_UTILS_H
 		#define LEMON_GRAPH_UTILS_H
 		#include <iterator>
 		#include <vector>
 		#include <map>
 		#include <cmath>
 		#include <algorithm>
 		#include <lemon/bits/invalid.h>
 		#include <lemon/bits/utility.h>
 		#include <lemon/maps.h>
 		#include <lemon/bits/traits.h>
 		#include <lemon/bits/alteration_notifier.h>
 		#include <lemon/bits/default_map.h>
 		///\ingroup gutils
 		///\file
 		///\brief Graph utilities.
 		namespace lemon {
 		  /// \addtogroup gutils
 		  /// @{
 		  ///Creates convenience typedefs for the digraph types and iterators
 		  ///This \c \#define creates convenience typedefs for the following types
 		  ///of \c Digraph: \c Node,  \c NodeIt, \c Arc, \c ArcIt, \c InArcIt,
 		  ///\c OutArcIt, \c BoolNodeMap, \c IntNodeMap, \c DoubleNodeMap,
 		  ///\c BoolArcMap, \c IntArcMap, \c DoubleArcMap.
 		  ///
 		  ///\note If the graph type is a dependent type, ie. the graph type depend
 		  ///on a template parameter, then use \c TEMPLATE_DIGRAPH_TYPEDEFS()
 		  ///macro.
 		#define DIGRAPH_TYPEDEFS(Digraph)                                       \
 		  typedef Digraph::Node Node;                                           \
 		  typedef Digraph::NodeIt NodeIt;                                       \
 		  typedef Digraph::Arc Arc;                                             \
 		  typedef Digraph::ArcIt ArcIt;                                         \
 		  typedef Digraph::InArcIt InArcIt;                                     \
 		  typedef Digraph::OutArcIt OutArcIt;                                   \
 		  typedef Digraph::NodeMap<bool> BoolNodeMap;                           \
 		  typedef Digraph::NodeMap<int> IntNodeMap;                             \
 		  typedef Digraph::NodeMap<double> DoubleNodeMap;                       \
 		  typedef Digraph::ArcMap<bool> BoolArcMap;                             \
 		  typedef Digraph::ArcMap<int> IntArcMap;                               \
 		  typedef Digraph::ArcMap<double> DoubleArcMap
 		  ///Creates convenience typedefs for the digraph types and iterators
 		  ///\see DIGRAPH_TYPEDEFS
 		  ///
 		  ///\note Use this macro, if the graph type is a dependent type,
 		  ///ie. the graph type depend on a template parameter.
 		#define TEMPLATE_DIGRAPH_TYPEDEFS(Digraph)                              \
 		  typedef typename Digraph::Node Node;                                  \
 		  typedef typename Digraph::NodeIt NodeIt;                              \
 		  typedef typename Digraph::Arc Arc;                                    \
 		  typedef typename Digraph::ArcIt ArcIt;                                \
 		  typedef typename Digraph::InArcIt InArcIt;                            \
 		  typedef typename Digraph::OutArcIt OutArcIt;                          \
 		  typedef typename Digraph::template NodeMap<bool> BoolNodeMap;         \
 		  typedef typename Digraph::template NodeMap<int> IntNodeMap;           \
 		  typedef typename Digraph::template NodeMap<double> DoubleNodeMap;     \
 		  typedef typename Digraph::template ArcMap<bool> BoolArcMap;           \
 		  typedef typename Digraph::template ArcMap<int> IntArcMap;             \
 		  typedef typename Digraph::template ArcMap<double> DoubleArcMap
 		  ///Creates convenience typedefs for the graph types and iterators
 		  ///This \c \#define creates the same convenience typedefs as defined
 		  ///by \ref DIGRAPH_TYPEDEFS(Graph) and six more, namely it creates
 		  ///\c Edge, \c EdgeIt, \c IncEdgeIt, \c BoolEdgeMap, \c IntEdgeMap,
 		  ///\c DoubleEdgeMap.
 		  ///
 		  ///\note If the graph type is a dependent type, ie. the graph type depend
 		  ///on a template parameter, then use \c TEMPLATE_DIGRAPH_TYPEDEFS()
 		  ///macro.
 		#define GRAPH_TYPEDEFS(Graph)                                           \
 		  DIGRAPH_TYPEDEFS(Graph);                                              \
 		  typedef Graph::Edge Edge;                                             \
 		  typedef Graph::EdgeIt EdgeIt;                                         \
 		  typedef Graph::IncEdgeIt IncEdgeIt;                                   \
 		  typedef Graph::EdgeMap<bool> BoolEdgeMap;                             \
 		  typedef Graph::EdgeMap<int> IntEdgeMap;                               \
 		  typedef Graph::EdgeMap<double> DoubleEdgeMap
 		  ///Creates convenience typedefs for the graph types and iterators
 		  ///\see GRAPH_TYPEDEFS
 		  ///
 		  ///\note Use this macro, if the graph type is a dependent type,
 		  ///ie. the graph type depend on a template parameter.
 		#define TEMPLATE_GRAPH_TYPEDEFS(Graph)                                  \
 		  TEMPLATE_DIGRAPH_TYPEDEFS(Graph);                                     \
 		  typedef typename Graph::Edge Edge;                                    \
 		  typedef typename Graph::EdgeIt EdgeIt;                                \
 		  typedef typename Graph::IncEdgeIt IncEdgeIt;                          \
 		  typedef typename Graph::template EdgeMap<bool> BoolEdgeMap;           \
 		  typedef typename Graph::template EdgeMap<int> IntEdgeMap;             \
 		  typedef typename Graph::template EdgeMap<double> DoubleEdgeMap
 		  /// \brief Function to count the items in the graph.
 		  ///
 		  /// This function counts the items (nodes, arcs etc) in the graph.
 		  /// The complexity of the function is O(n) because
 		  /// it iterates on all of the items.
 		  template <typename Graph, typename Item>
 		  inline int countItems(const Graph& g) {
 		    typedef typename ItemSetTraits<Graph, Item>::ItemIt ItemIt;
 		    int num = 0;
 		    for (ItemIt it(g); it != INVALID; ++it) {
 		      ++num;
+		    }
 		    return num;
+		  }
 		  // Node counting:
 		  namespace _graph_utils_bits {
 		    template <typename Graph, typename Enable = void>
 		    struct CountNodesSelector {
 		      static int count(const Graph &g) {
 		        return countItems<Graph, typename Graph::Node>(g);
+		      }
 		    };
 		    template <typename Graph>
 		    struct CountNodesSelector<
 		      Graph, typename
 		      enable_if<typename Graph::NodeNumTag, void>::type>
+		    {
 		      static int count(const Graph &g) {
 		        return g.nodeNum();
+		      }
 		    };
+		  }
 		  /// \brief Function to count the nodes in the graph.
 		  ///
 		  /// This function counts the nodes in the graph.
 		  /// The complexity of the function is O(n) but for some
 		  /// graph structures it is specialized to run in O(1).
 		  ///
 		  /// If the graph contains a \e nodeNum() member function and a
 		  /// \e NodeNumTag tag then this function calls directly the member
 		  /// function to query the cardinality of the node set.
 		  template <typename Graph>
 		  inline int countNodes(const Graph& g) {
 		    return _graph_utils_bits::CountNodesSelector<Graph>::count(g);
+		  }
 		  // Arc counting:
 		  namespace _graph_utils_bits {
 		    template <typename Graph, typename Enable = void>
 		    struct CountArcsSelector {
 		      static int count(const Graph &g) {
 		        return countItems<Graph, typename Graph::Arc>(g);
+		      }
 		    };
 		    template <typename Graph>
 		    struct CountArcsSelector<
 		      Graph,
 		      typename enable_if<typename Graph::ArcNumTag, void>::type>
+		    {
 		      static int count(const Graph &g) {
 		        return g.arcNum();
+		      }
 		    };
+		  }
 		  /// \brief Function to count the arcs in the graph.
 		  ///
 		  /// This function counts the arcs in the graph.
 		  /// The complexity of the function is O(e) but for some
 		  /// graph structures it is specialized to run in O(1).
 		  ///
 		  /// If the graph contains a \e arcNum() member function and a
 		  /// \e EdgeNumTag tag then this function calls directly the member
 		  /// function to query the cardinality of the arc set.
 		  template <typename Graph>
 		  inline int countArcs(const Graph& g) {
 		    return _graph_utils_bits::CountArcsSelector<Graph>::count(g);
+		  }
 		  // Edge counting:
 		  namespace _graph_utils_bits {
 		    template <typename Graph, typename Enable = void>
 		    struct CountEdgesSelector {
 		      static int count(const Graph &g) {
 		        return countItems<Graph, typename Graph::Edge>(g);
+		      }
 		    };
 		    template <typename Graph>
 		    struct CountEdgesSelector<
 		      Graph,
 		      typename enable_if<typename Graph::EdgeNumTag, void>::type>
+		    {
 		      static int count(const Graph &g) {
 		        return g.edgeNum();
+		      }
 		    };
+		  }
 		  /// \brief Function to count the edges in the graph.
 		  ///
 		  /// This function counts the edges in the graph.
 		  /// The complexity of the function is O(m) but for some
 		  /// graph structures it is specialized to run in O(1).
 		  ///
 		  /// If the graph contains a \e edgeNum() member function and a
 		  /// \e EdgeNumTag tag then this function calls directly the member
 		  /// function to query the cardinality of the edge set.
 		  template <typename Graph>
 		  inline int countEdges(const Graph& g) {
 		    return _graph_utils_bits::CountEdgesSelector<Graph>::count(g);
+		  }
 		  template <typename Graph, typename DegIt>
 		  inline int countNodeDegree(const Graph& _g, const typename Graph::Node& _n) {
 		    int num = 0;
 		    for (DegIt it(_g, _n); it != INVALID; ++it) {
 		      ++num;
+		    }
 		    return num;
+		  }
 		  /// \brief Function to count the number of the out-arcs from node \c n.
 		  ///
 		  /// This function counts the number of the out-arcs from node \c n
 		  /// in the graph.
 		  template <typename Graph>
 		  inline int countOutArcs(const Graph& _g,  const typename Graph::Node& _n) {
 		    return countNodeDegree<Graph, typename Graph::OutArcIt>(_g, _n);
+		  }
 		  /// \brief Function to count the number of the in-arcs to node \c n.
 		  ///
 		  /// This function counts the number of the in-arcs to node \c n
 		  /// in the graph.
 		  template <typename Graph>
 		  inline int countInArcs(const Graph& _g,  const typename Graph::Node& _n) {
 		    return countNodeDegree<Graph, typename Graph::InArcIt>(_g, _n);
+		  }
 		  /// \brief Function to count the number of the inc-edges to node \c n.
 		  ///
 		  /// This function counts the number of the inc-edges to node \c n
 		  /// in the graph.
 		  template <typename Graph>
 		  inline int countIncEdges(const Graph& _g,  const typename Graph::Node& _n) {
 		    return countNodeDegree<Graph, typename Graph::IncEdgeIt>(_g, _n);
+		  }
 		  namespace _graph_utils_bits {
 		    template <typename Graph, typename Enable = void>
 		    struct FindArcSelector {
 		      typedef typename Graph::Node Node;
 		      typedef typename Graph::Arc Arc;
 		      static Arc find(const Graph &g, Node u, Node v, Arc e) {
 		        if (e == INVALID) {
 		          g.firstOut(e, u);
 		        } else {
 		          g.nextOut(e);
+		        }
 		        while (e != INVALID && g.target(e) != v) {
 		          g.nextOut(e);
+		        }
 		        return e;
+		      }
 		    };
 		    template <typename Graph>
 		    struct FindArcSelector<
 		      Graph,
 		      typename enable_if<typename Graph::FindEdgeTag, void>::type>
+		    {
 		      typedef typename Graph::Node Node;
 		      typedef typename Graph::Arc Arc;
 		      static Arc find(const Graph &g, Node u, Node v, Arc prev) {
 		        return g.findArc(u, v, prev);
+		      }
 		    };
+		  }
 		  /// \brief Finds an arc between two nodes of a graph.
 		  ///
 		  /// Finds an arc from node \c u to node \c v in graph \c g.
 		  ///
 		  /// If \c prev is \ref INVALID (this is the default value), then
 		  /// it finds the first arc from \c u to \c v. Otherwise it looks for
 		  /// the next arc from \c u to \c v after \c prev.
 		  /// \return The found arc or \ref INVALID if there is no such an arc.
 		  ///
 		  /// Thus you can iterate through each arc from \c u to \c v as it follows.
 		  ///\code
 		  /// for(Arc e=findArc(g,u,v);e!=INVALID;e=findArc(g,u,v,e)) {
 		  ///   ...
 		  /// }
 		  ///\endcode
 		  ///
 		  ///\sa ArcLookUp
 		  ///\sa AllArcLookUp
 		  ///\sa DynArcLookUp
 		  ///\sa ConArcIt
 		  template <typename Graph>
 		  inline typename Graph::Arc
 		  findArc(const Graph &g, typename Graph::Node u, typename Graph::Node v,
 		           typename Graph::Arc prev = INVALID) {
 		    return _graph_utils_bits::FindArcSelector<Graph>::find(g, u, v, prev);
+		  }
 		  /// \brief Iterator for iterating on arcs connected the same nodes.
 		  ///
 		  /// Iterator for iterating on arcs connected the same nodes. It is
 		  /// higher level interface for the findArc() function. You can
 		  /// use it the following way:
 		  ///\code
 		  /// for (ConArcIt<Graph> it(g, src, trg); it != INVALID; ++it) {
 		  ///   ...
 		  /// }
 		  ///\endcode
 		  ///
 		  ///\sa findArc()
 		  ///\sa ArcLookUp
 		  ///\sa AllArcLookUp
 		  ///\sa DynArcLookUp
 		  template <typename _Graph>
 		  class ConArcIt : public _Graph::Arc {
 		  public:
 		    typedef _Graph Graph;
 		    typedef typename Graph::Arc Parent;
 		    typedef typename Graph::Arc Arc;
 		    typedef typename Graph::Node Node;
 		    /// \brief Constructor.
 		    ///
 		    /// Construct a new ConArcIt iterating on the arcs which
 		    /// connects the \c u and \c v node.
 		    ConArcIt(const Graph& g, Node u, Node v) : _graph(g) {
 		      Parent::operator=(findArc(_graph, u, v));
+		    }
 		    /// \brief Constructor.
 		    ///
 		    /// Construct a new ConArcIt which continues the iterating from
 		    /// the \c e arc.
 		    ConArcIt(const Graph& g, Arc a) : Parent(a), _graph(g) {}
 		    /// \brief Increment operator.
 		    ///
 		    /// It increments the iterator and gives back the next arc.
 		    ConArcIt& operator++() {
 		      Parent::operator=(findArc(_graph, _graph.source(*this),
 		                                _graph.target(*this), *this));
 		      return *this;
+		    }
 		  private:
 		    const Graph& _graph;
 		  };
 		  namespace _graph_utils_bits {
 		    template <typename Graph, typename Enable = void>
 		    struct FindEdgeSelector {
 		      typedef typename Graph::Node Node;
 		      typedef typename Graph::Edge Edge;
 		      static Edge find(const Graph &g, Node u, Node v, Edge e) {
 		        bool b;
 		        if (u != v) {
 		          if (e == INVALID) {
 		            g.firstInc(e, b, u);
 		          } else {
 		            b = g.u(e) == u;
 		            g.nextInc(e, b);
+		          }
 		          while (e != INVALID && (b ? g.v(e) : g.u(e)) != v) {
 		            g.nextInc(e, b);
+		          }
 		        } else {
 		          if (e == INVALID) {
 		            g.firstInc(e, b, u);
 		          } else {
 		            b = true;
 		            g.nextInc(e, b);
+		          }
 		          while (e != INVALID && (!b || g.v(e) != v)) {
 		            g.nextInc(e, b);
+		          }
+		        }
 		        return e;
+		      }
 		    };
 		    template <typename Graph>
 		    struct FindEdgeSelector<
 		      Graph,
 		      typename enable_if<typename Graph::FindEdgeTag, void>::type>
+		    {
 		      typedef typename Graph::Node Node;
 		      typedef typename Graph::Edge Edge;
 		      static Edge find(const Graph &g, Node u, Node v, Edge prev) {
 		        return g.findEdge(u, v, prev);
+		      }
 		    };
+		  }
 		  /// \brief Finds an edge between two nodes of a graph.
 		  ///
 		  /// Finds an edge from node \c u to node \c v in graph \c g.
 		  /// If the node \c u and node \c v is equal then each loop edge
 		  /// will be enumerated once.
 		  ///
 		  /// If \c prev is \ref INVALID (this is the default value), then
 		  /// it finds the first arc from \c u to \c v. Otherwise it looks for
 		  /// the next arc from \c u to \c v after \c prev.
 		  /// \return The found arc or \ref INVALID if there is no such an arc.
 		  ///
 		  /// Thus you can iterate through each arc from \c u to \c v as it follows.
 		  ///\code
 		  /// for(Edge e = findEdge(g,u,v); e != INVALID;
 		  ///     e = findEdge(g,u,v,e)) {
 		  ///   ...
 		  /// }
 		  ///\endcode
 		  ///
 		  ///\sa ConEdgeIt
 		  template <typename Graph>
 		  inline typename Graph::Edge
 		  findEdge(const Graph &g, typename Graph::Node u, typename Graph::Node v,
 		            typename Graph::Edge p = INVALID) {
 		    return _graph_utils_bits::FindEdgeSelector<Graph>::find(g, u, v, p);
+		  }
 		  /// \brief Iterator for iterating on edges connected the same nodes.
 		  ///
 		  /// Iterator for iterating on edges connected the same nodes. It is
 		  /// higher level interface for the findEdge() function. You can
 		  /// use it the following way:
 		  ///\code
 		  /// for (ConEdgeIt<Graph> it(g, src, trg); it != INVALID; ++it) {
 		  ///   ...
 		  /// }
 		  ///\endcode
 		  ///
 		  ///\sa findEdge()
 		  template <typename _Graph>
 		  class ConEdgeIt : public _Graph::Edge {
 		  public:
 		    typedef _Graph Graph;
 		    typedef typename Graph::Edge Parent;
 		    typedef typename Graph::Edge Edge;
 		    typedef typename Graph::Node Node;
 		    /// \brief Constructor.
 		    ///
 		    /// Construct a new ConEdgeIt iterating on the edges which
 		    /// connects the \c u and \c v node.
 		    ConEdgeIt(const Graph& g, Node u, Node v) : _graph(g) {
 		      Parent::operator=(findEdge(_graph, u, v));
+		    }
 		    /// \brief Constructor.
 		    ///
 		    /// Construct a new ConEdgeIt which continues the iterating from
 		    /// the \c e edge.
 		    ConEdgeIt(const Graph& g, Edge e) : Parent(e), _graph(g) {}
 		    /// \brief Increment operator.
 		    ///
 		    /// It increments the iterator and gives back the next edge.
 		    ConEdgeIt& operator++() {
 		      Parent::operator=(findEdge(_graph, _graph.u(*this),
 		                                 _graph.v(*this), *this));
 		      return *this;
+		    }
 		  private:
 		    const Graph& _graph;
 		  };
 		  namespace _graph_utils_bits {
 		    template <typename Digraph, typename Item, typename RefMap>
 		    class MapCopyBase {
 		    public:
 		      virtual void copy(const Digraph& from, const RefMap& refMap) = 0;
 		      virtual ~MapCopyBase() {}
 		    };
 		    template <typename Digraph, typename Item, typename RefMap,
 		              typename ToMap, typename FromMap>
 		    class MapCopy : public MapCopyBase<Digraph, Item, RefMap> {
 		    public:
 		      MapCopy(ToMap& tmap, const FromMap& map)
 		        : _tmap(tmap), _map(map) {}
 		      virtual void copy(const Digraph& digraph, const RefMap& refMap) {
 		        typedef typename ItemSetTraits<Digraph, Item>::ItemIt ItemIt;
 		        for (ItemIt it(digraph); it != INVALID; ++it) {
 		          _tmap.set(refMap[it], _map[it]);
+		        }
+		      }
 		    private:
 		      ToMap& _tmap;
 		      const FromMap& _map;
 		    };
 		    template <typename Digraph, typename Item, typename RefMap, typename It>
 		    class ItemCopy : public MapCopyBase<Digraph, Item, RefMap> {
 		    public:
 		      ItemCopy(It& it, const Item& item) : _it(it), _item(item) {}
 		      virtual void copy(const Digraph&, const RefMap& refMap) {
 		        _it = refMap[_item];
+		      }
 		    private:
 		      It& _it;
 		      Item _item;
 		    };
 		    template <typename Digraph, typename Item, typename RefMap, typename Ref>
 		    class RefCopy : public MapCopyBase<Digraph, Item, RefMap> {
 		    public:
 		      RefCopy(Ref& map) : _map(map) {}
 		      virtual void copy(const Digraph& digraph, const RefMap& refMap) {
 		        typedef typename ItemSetTraits<Digraph, Item>::ItemIt ItemIt;
 		        for (ItemIt it(digraph); it != INVALID; ++it) {
 		          _map.set(it, refMap[it]);
+		        }
+		      }
 		    private:
 		      Ref& _map;
 		    };
 		    template <typename Digraph, typename Item, typename RefMap,
 		              typename CrossRef>
 		    class CrossRefCopy : public MapCopyBase<Digraph, Item, RefMap> {
 		    public:
 		      CrossRefCopy(CrossRef& cmap) : _cmap(cmap) {}
 		      virtual void copy(const Digraph& digraph, const RefMap& refMap) {
 		        typedef typename ItemSetTraits<Digraph, Item>::ItemIt ItemIt;
 		        for (ItemIt it(digraph); it != INVALID; ++it) {
 		          _cmap.set(refMap[it], it);
+		        }
+		      }
 		    private:
 		      CrossRef& _cmap;
 		    };
 		    template <typename Digraph, typename Enable = void>
 		    struct DigraphCopySelector {
 		      template <typename From, typename NodeRefMap, typename ArcRefMap>
 		      static void copy(Digraph &to, const From& from,
 		                       NodeRefMap& nodeRefMap, ArcRefMap& arcRefMap) {
 		        for (typename From::NodeIt it(from); it != INVALID; ++it) {
 		          nodeRefMap[it] = to.addNode();
+		        }
 		        for (typename From::ArcIt it(from); it != INVALID; ++it) {
 		          arcRefMap[it] = to.addArc(nodeRefMap[from.source(it)],
 		                                    nodeRefMap[from.target(it)]);
+		        }
+		      }
 		    };
 		    template <typename Digraph>
 		    struct DigraphCopySelector<
 		      Digraph,
 		      typename enable_if<typename Digraph::BuildTag, void>::type>
+		    {
 		      template <typename From, typename NodeRefMap, typename ArcRefMap>
 		      static void copy(Digraph &to, const From& from,
 		                       NodeRefMap& nodeRefMap, ArcRefMap& arcRefMap) {
 		        to.build(from, nodeRefMap, arcRefMap);
+		      }
 		    };
 		    template <typename Graph, typename Enable = void>
 		    struct GraphCopySelector {
 		      template <typename From, typename NodeRefMap, typename EdgeRefMap>
 		      static void copy(Graph &to, const From& from,
 		                       NodeRefMap& nodeRefMap, EdgeRefMap& edgeRefMap) {
 		        for (typename From::NodeIt it(from); it != INVALID; ++it) {
 		          nodeRefMap[it] = to.addNode();
+		        }
 		        for (typename From::EdgeIt it(from); it != INVALID; ++it) {
 		          edgeRefMap[it] = to.addEdge(nodeRefMap[from.u(it)],
 		                                      nodeRefMap[from.v(it)]);
+		        }
+		      }
 		    };
 		    template <typename Graph>
 		    struct GraphCopySelector<
 		      Graph,
 		      typename enable_if<typename Graph::BuildTag, void>::type>
+		    {
 		      template <typename From, typename NodeRefMap, typename EdgeRefMap>
 		      static void copy(Graph &to, const From& from,
 		                       NodeRefMap& nodeRefMap, EdgeRefMap& edgeRefMap) {
 		        to.build(from, nodeRefMap, edgeRefMap);
+		      }
 		    };
+		  }
 		  /// \brief Class to copy a digraph.
 		  ///
 		  /// Class to copy a digraph to another digraph (duplicate a digraph). The
 		  /// simplest way of using it is through the \c copyDigraph() function.
 		  ///
 		  /// This class not just make a copy of a graph, but it can create
 		  /// references and cross references between the nodes and arcs of
 		  /// the two graphs, it can copy maps for use with the newly created
 		  /// graph and copy nodes and arcs.
 		  ///
 		  /// To make a copy from a graph, first an instance of DigraphCopy
 		  /// should be created, then the data belongs to the graph should
 		  /// assigned to copy. In the end, the \c run() member should be
 		  /// called.
 		  ///
 		  /// The next code copies a graph with several data:
 		  ///\code
 		  ///  DigraphCopy<NewGraph, OrigGraph> dc(new_graph, orig_graph);
 		  ///  // create a reference for the nodes
 		  ///  OrigGraph::NodeMap<NewGraph::Node> nr(orig_graph);
 		  ///  dc.nodeRef(nr);
 		  ///  // create a cross reference (inverse) for the arcs
 		  ///  NewGraph::ArcMap<OrigGraph::Arc> acr(new_graph);
 		  ///  dc.arcCrossRef(acr);
 		  ///  // copy an arc map
 		  ///  OrigGraph::ArcMap<double> oamap(orig_graph);
 		  ///  NewGraph::ArcMap<double> namap(new_graph);
 		  ///  dc.arcMap(namap, oamap);
 		  ///  // copy a node
 		  ///  OrigGraph::Node on;
 		  ///  NewGraph::Node nn;
 		  ///  dc.node(nn, on);
 		  ///  // Executions of copy
 		  ///  dc.run();
 		  ///\endcode
 		  template <typename To, typename From>
 		  class DigraphCopy {
 		  private:
 		    typedef typename From::Node Node;
 		    typedef typename From::NodeIt NodeIt;
 		    typedef typename From::Arc Arc;
 		    typedef typename From::ArcIt ArcIt;
 		    typedef typename To::Node TNode;
 		    typedef typename To::Arc TArc;
 		    typedef typename From::template NodeMap<TNode> NodeRefMap;
 		    typedef typename From::template ArcMap<TArc> ArcRefMap;
 		  public:
 		    /// \brief Constructor for the DigraphCopy.
 		    ///
 		    /// It copies the content of the \c _from digraph into the
 		    /// \c _to digraph.
 		    DigraphCopy(To& to, const From& from)
 		      : _from(from), _to(to) {}
 		    /// \brief Destructor of the DigraphCopy
 		    ///
 		    /// Destructor of the DigraphCopy
 		    ~DigraphCopy() {
 		      for (int i = 0; i < int(_node_maps.size()); ++i) {
 		        delete _node_maps[i];
+		      }
 		      for (int i = 0; i < int(_arc_maps.size()); ++i) {
 		        delete _arc_maps[i];
+		      }
+		    }
 		    /// \brief Copies the node references into the given map.
 		    ///
 		    /// Copies the node references into the given map. The parameter
 		    /// should be a map, which key type is the Node type of the source
 		    /// graph, while the value type is the Node type of the
 		    /// destination graph.
 		    template <typename NodeRef>
 		    DigraphCopy& nodeRef(NodeRef& map) {
 		      _node_maps.push_back(new _graph_utils_bits::RefCopy<From, Node,
 		                           NodeRefMap, NodeRef>(map));
 		      return *this;
+		    }
 		    /// \brief Copies the node cross references into the given map.
 		    ///
 		    ///  Copies the node cross references (reverse references) into
 		    ///  the given map. The parameter should be a map, which key type
 		    ///  is the Node type of the destination graph, while the value type is
 		    ///  the Node type of the source graph.
 		    template <typename NodeCrossRef>
 		    DigraphCopy& nodeCrossRef(NodeCrossRef& map) {
 		      _node_maps.push_back(new _graph_utils_bits::CrossRefCopy<From, Node,
 		                           NodeRefMap, NodeCrossRef>(map));
 		      return *this;
+		    }
 		    /// \brief Make copy of the given map.
 		    ///
 		    /// Makes copy of the given map for the newly created digraph.
 		    /// The new map's key type is the destination graph's node type,
 		    /// and the copied map's key type is the source graph's node type.
 		    template <typename ToMap, typename FromMap>
 		    DigraphCopy& nodeMap(ToMap& tmap, const FromMap& map) {
 		      _node_maps.push_back(new _graph_utils_bits::MapCopy<From, Node,
 		                           NodeRefMap, ToMap, FromMap>(tmap, map));
 		      return *this;
+		    }
 		    /// \brief Make a copy of the given node.
 		    ///
 		    /// Make a copy of the given node.
 		    DigraphCopy& node(TNode& tnode, const Node& snode) {
 		      _node_maps.push_back(new _graph_utils_bits::ItemCopy<From, Node,
 		                           NodeRefMap, TNode>(tnode, snode));
 		      return *this;
+		    }
 		    /// \brief Copies the arc references into the given map.
 		    ///
 		    /// Copies the arc references into the given map.
 		    template <typename ArcRef>
 		    DigraphCopy& arcRef(ArcRef& map) {
 		      _arc_maps.push_back(new _graph_utils_bits::RefCopy<From, Arc,
 		                          ArcRefMap, ArcRef>(map));
 		      return *this;
+		    }
 		    /// \brief Copies the arc cross references into the given map.
 		    ///
 		    ///  Copies the arc cross references (reverse references) into
 		    ///  the given map.
 		    template <typename ArcCrossRef>
 		    DigraphCopy& arcCrossRef(ArcCrossRef& map) {
 		      _arc_maps.push_back(new _graph_utils_bits::CrossRefCopy<From, Arc,
 		                          ArcRefMap, ArcCrossRef>(map));
 		      return *this;
+		    }
 		    /// \brief Make copy of the given map.
 		    ///
 		    /// Makes copy of the given map for the newly created digraph.
 		    /// The new map's key type is the to digraph's arc type,
 		    /// and the copied map's key type is the from digraph's arc
 		    /// type.
 		    template <typename ToMap, typename FromMap>
 		    DigraphCopy& arcMap(ToMap& tmap, const FromMap& map) {
 		      _arc_maps.push_back(new _graph_utils_bits::MapCopy<From, Arc,
 		                          ArcRefMap, ToMap, FromMap>(tmap, map));
 		      return *this;
+		    }
 		    /// \brief Make a copy of the given arc.
 		    ///
 		    /// Make a copy of the given arc.
 		    DigraphCopy& arc(TArc& tarc, const Arc& sarc) {
 		      _arc_maps.push_back(new _graph_utils_bits::ItemCopy<From, Arc,
 		                          ArcRefMap, TArc>(tarc, sarc));
 		      return *this;
+		    }
 		    /// \brief Executes the copies.
 		    ///
 		    /// Executes the copies.
 		    void run() {
 		      NodeRefMap nodeRefMap(_from);
 		      ArcRefMap arcRefMap(_from);
 		      _graph_utils_bits::DigraphCopySelector<To>::
 		        copy(_to, _from, nodeRefMap, arcRefMap);
 		      for (int i = 0; i < int(_node_maps.size()); ++i) {
 		        _node_maps[i]->copy(_from, nodeRefMap);
+		      }
 		      for (int i = 0; i < int(_arc_maps.size()); ++i) {
 		        _arc_maps[i]->copy(_from, arcRefMap);
+		      }
+		    }
 		  protected:
 		    const From& _from;
 		    To& _to;
 		    std::vector<_graph_utils_bits::MapCopyBase<From, Node, NodeRefMap>* >
 		    _node_maps;
 		    std::vector<_graph_utils_bits::MapCopyBase<From, Arc, ArcRefMap>* >
 		    _arc_maps;
 		  };
 		  /// \brief Copy a digraph to another digraph.
 		  ///
 		  /// Copy a digraph to another digraph. The complete usage of the
 		  /// function is detailed in the DigraphCopy class, but a short
 		  /// example shows a basic work:
 		  ///\code
 		  /// copyDigraph(trg, src).nodeRef(nr).arcCrossRef(ecr).run();
 		  ///\endcode
 		  ///
 		  /// After the copy the \c nr map will contain the mapping from the
 		  /// nodes of the \c from digraph to the nodes of the \c to digraph and
 		  /// \c ecr will contain the mapping from the arcs of the \c to digraph
 		  /// to the arcs of the \c from digraph.
 		  ///
 		  /// \see DigraphCopy
 		  template <typename To, typename From>
 		  DigraphCopy<To, From> copyDigraph(To& to, const From& from) {
 		    return DigraphCopy<To, From>(to, from);
+		  }
 		  /// \brief Class to copy a graph.
 		  ///
 		  /// Class to copy a graph to another graph (duplicate a graph). The
 		  /// simplest way of using it is through the \c copyGraph() function.
 		  ///
 		  /// This class not just make a copy of a graph, but it can create
 		  /// references and cross references between the nodes, edges and arcs of
 		  /// the two graphs, it can copy maps for use with the newly created
 		  /// graph and copy nodes, edges and arcs.
 		  ///
 		  /// To make a copy from a graph, first an instance of GraphCopy
 		  /// should be created, then the data belongs to the graph should
 		  /// assigned to copy. In the end, the \c run() member should be
 		  /// called.
 		  ///
 		  /// The next code copies a graph with several data:
 		  ///\code
 		  ///  GraphCopy<NewGraph, OrigGraph> dc(new_graph, orig_graph);
 		  ///  // create a reference for the nodes
 		  ///  OrigGraph::NodeMap<NewGraph::Node> nr(orig_graph);
 		  ///  dc.nodeRef(nr);
 		  ///  // create a cross reference (inverse) for the edges
 		  ///  NewGraph::EdgeMap<OrigGraph::Arc> ecr(new_graph);
 		  ///  dc.edgeCrossRef(ecr);
 		  ///  // copy an arc map
 		  ///  OrigGraph::ArcMap<double> oamap(orig_graph);
 		  ///  NewGraph::ArcMap<double> namap(new_graph);
 		  ///  dc.arcMap(namap, oamap);
 		  ///  // copy a node
 		  ///  OrigGraph::Node on;
 		  ///  NewGraph::Node nn;
 		  ///  dc.node(nn, on);
 		  ///  // Executions of copy
 		  ///  dc.run();
 		  ///\endcode
 		  template <typename To, typename From>
 		  class GraphCopy {
 		  private:
 		    typedef typename From::Node Node;
 		    typedef typename From::NodeIt NodeIt;
 		    typedef typename From::Arc Arc;
 		    typedef typename From::ArcIt ArcIt;
 		    typedef typename From::Edge Edge;
 		    typedef typename From::EdgeIt EdgeIt;
 		    typedef typename To::Node TNode;
 		    typedef typename To::Arc TArc;
 		    typedef typename To::Edge TEdge;
 		    typedef typename From::template NodeMap<TNode> NodeRefMap;
 		    typedef typename From::template EdgeMap<TEdge> EdgeRefMap;
 		    struct ArcRefMap {
 		      ArcRefMap(const To& to, const From& from,
 		                const EdgeRefMap& edge_ref, const NodeRefMap& node_ref)
 		        : _to(to), _from(from),
 		          _edge_ref(edge_ref), _node_ref(node_ref) {}
 		      typedef typename From::Arc Key;
 		      typedef typename To::Arc Value;
 		      Value operator[](const Key& key) const {
 		        bool forward = _from.u(key) != _from.v(key) ?
 		          _node_ref[_from.source(key)] ==
 		          _to.source(_to.direct(_edge_ref[key], true)) :
 		          _from.direction(key);
 		        return _to.direct(_edge_ref[key], forward);
+		      }
 		      const To& _to;
 		      const From& _from;
 		      const EdgeRefMap& _edge_ref;
 		      const NodeRefMap& _node_ref;
 		    };
 		  public:
 		    /// \brief Constructor for the GraphCopy.
 		    ///
 		    /// It copies the content of the \c _from graph into the
 		    /// \c _to graph.
 		    GraphCopy(To& to, const From& from)
 		      : _from(from), _to(to) {}
 		    /// \brief Destructor of the GraphCopy
 		    ///
 		    /// Destructor of the GraphCopy
 		    ~GraphCopy() {
 		      for (int i = 0; i < int(_node_maps.size()); ++i) {
 		        delete _node_maps[i];
+		      }
 		      for (int i = 0; i < int(_arc_maps.size()); ++i) {
 		        delete _arc_maps[i];
+		      }
 		      for (int i = 0; i < int(_edge_maps.size()); ++i) {
 		        delete _edge_maps[i];
+		      }
+		    }
 		    /// \brief Copies the node references into the given map.
 		    ///
 		    /// Copies the node references into the given map.
 		    template <typename NodeRef>
 		    GraphCopy& nodeRef(NodeRef& map) {
 		      _node_maps.push_back(new _graph_utils_bits::RefCopy<From, Node,
 		                           NodeRefMap, NodeRef>(map));
 		      return *this;
+		    }
 		    /// \brief Copies the node cross references into the given map.
 		    ///
 		    ///  Copies the node cross references (reverse references) into
 		    ///  the given map.
 		    template <typename NodeCrossRef>
 		    GraphCopy& nodeCrossRef(NodeCrossRef& map) {
 		      _node_maps.push_back(new _graph_utils_bits::CrossRefCopy<From, Node,
 		                           NodeRefMap, NodeCrossRef>(map));
 		      return *this;
+		    }
 		    /// \brief Make copy of the given map.
 		    ///
 		    /// Makes copy of the given map for the newly created graph.
 		    /// The new map's key type is the to graph's node type,
 		    /// and the copied map's key type is the from graph's node
 		    /// type.
 		    template <typename ToMap, typename FromMap>
 		    GraphCopy& nodeMap(ToMap& tmap, const FromMap& map) {
 		      _node_maps.push_back(new _graph_utils_bits::MapCopy<From, Node,
 		                           NodeRefMap, ToMap, FromMap>(tmap, map));
 		      return *this;
+		    }
 		    /// \brief Make a copy of the given node.
 		    ///
 		    /// Make a copy of the given node.
 		    GraphCopy& node(TNode& tnode, const Node& snode) {
 		      _node_maps.push_back(new _graph_utils_bits::ItemCopy<From, Node,
 		                           NodeRefMap, TNode>(tnode, snode));
 		      return *this;
+		    }
 		    /// \brief Copies the arc references into the given map.
 		    ///
 		    /// Copies the arc references into the given map.
 		    template <typename ArcRef>
 		    GraphCopy& arcRef(ArcRef& map) {
 		      _arc_maps.push_back(new _graph_utils_bits::RefCopy<From, Arc,
 		                          ArcRefMap, ArcRef>(map));
 		      return *this;
+		    }
 		    /// \brief Copies the arc cross references into the given map.
 		    ///
 		    ///  Copies the arc cross references (reverse references) into
 		    ///  the given map.
 		    template <typename ArcCrossRef>
 		    GraphCopy& arcCrossRef(ArcCrossRef& map) {
 		      _arc_maps.push_back(new _graph_utils_bits::CrossRefCopy<From, Arc,
 		                          ArcRefMap, ArcCrossRef>(map));
 		      return *this;
+		    }
 		    /// \brief Make copy of the given map.
 		    ///
 		    /// Makes copy of the given map for the newly created graph.
 		    /// The new map's key type is the to graph's arc type,
 		    /// and the copied map's key type is the from graph's arc
 		    /// type.
 		    template <typename ToMap, typename FromMap>
 		    GraphCopy& arcMap(ToMap& tmap, const FromMap& map) {
 		      _arc_maps.push_back(new _graph_utils_bits::MapCopy<From, Arc,
 		                          ArcRefMap, ToMap, FromMap>(tmap, map));
 		      return *this;
+		    }
 		    /// \brief Make a copy of the given arc.
 		    ///
 		    /// Make a copy of the given arc.
 		    GraphCopy& arc(TArc& tarc, const Arc& sarc) {
 		      _arc_maps.push_back(new _graph_utils_bits::ItemCopy<From, Arc,
 		                          ArcRefMap, TArc>(tarc, sarc));
 		      return *this;
+		    }
 		    /// \brief Copies the edge references into the given map.
 		    ///
 		    /// Copies the edge references into the given map.
 		    template <typename EdgeRef>
 		    GraphCopy& edgeRef(EdgeRef& map) {
 		      _edge_maps.push_back(new _graph_utils_bits::RefCopy<From, Edge,
 		                           EdgeRefMap, EdgeRef>(map));
 		      return *this;
+		    }
 		    /// \brief Copies the edge cross references into the given map.
 		    ///
 		    /// Copies the edge cross references (reverse
 		    /// references) into the given map.
 		    template <typename EdgeCrossRef>
 		    GraphCopy& edgeCrossRef(EdgeCrossRef& map) {
 		      _edge_maps.push_back(new _graph_utils_bits::CrossRefCopy<From,
 		                           Edge, EdgeRefMap, EdgeCrossRef>(map));
 		      return *this;
+		    }
 		    /// \brief Make copy of the given map.
 		    ///
 		    /// Makes copy of the given map for the newly created graph.
 		    /// The new map's key type is the to graph's edge type,
 		    /// and the copied map's key type is the from graph's edge
 		    /// type.
 		    template <typename ToMap, typename FromMap>
 		    GraphCopy& edgeMap(ToMap& tmap, const FromMap& map) {
 		      _edge_maps.push_back(new _graph_utils_bits::MapCopy<From, Edge,
 		                           EdgeRefMap, ToMap, FromMap>(tmap, map));
 		      return *this;
+		    }
 		    /// \brief Make a copy of the given edge.
 		    ///
 		    /// Make a copy of the given edge.
 		    GraphCopy& edge(TEdge& tedge, const Edge& sedge) {
 		      _edge_maps.push_back(new _graph_utils_bits::ItemCopy<From, Edge,
 		                           EdgeRefMap, TEdge>(tedge, sedge));
 		      return *this;
+		    }
 		    /// \brief Executes the copies.
 		    ///
 		    /// Executes the copies.
 		    void run() {
 		      NodeRefMap nodeRefMap(_from);
 		      EdgeRefMap edgeRefMap(_from);
 		      ArcRefMap arcRefMap(_to, _from, edgeRefMap, nodeRefMap);
 		      _graph_utils_bits::GraphCopySelector<To>::
 		        copy(_to, _from, nodeRefMap, edgeRefMap);
 		      for (int i = 0; i < int(_node_maps.size()); ++i) {
 		        _node_maps[i]->copy(_from, nodeRefMap);
+		      }
 		      for (int i = 0; i < int(_edge_maps.size()); ++i) {
 		        _edge_maps[i]->copy(_from, edgeRefMap);
+		      }
 		      for (int i = 0; i < int(_arc_maps.size()); ++i) {
 		        _arc_maps[i]->copy(_from, arcRefMap);
+		      }
+		    }
 		  private:
 		    const From& _from;
 		    To& _to;
 		    std::vector<_graph_utils_bits::MapCopyBase<From, Node, NodeRefMap>* >
 		    _node_maps;
 		    std::vector<_graph_utils_bits::MapCopyBase<From, Arc, ArcRefMap>* >
 		    _arc_maps;
 		    std::vector<_graph_utils_bits::MapCopyBase<From, Edge, EdgeRefMap>* >
 		    _edge_maps;
 		  };
 		  /// \brief Copy a graph to another graph.
 		  ///
 		  /// Copy a graph to another graph. The complete usage of the
 		  /// function is detailed in the GraphCopy class, but a short
 		  /// example shows a basic work:
 		  ///\code
 		  /// copyGraph(trg, src).nodeRef(nr).arcCrossRef(ecr).run();
 		  ///\endcode
 		  ///
 		  /// After the copy the \c nr map will contain the mapping from the
 		  /// nodes of the \c from graph to the nodes of the \c to graph and
 		  /// \c ecr will contain the mapping from the arcs of the \c to graph
 		  /// to the arcs of the \c from graph.
 		  ///
 		  /// \see GraphCopy
 		  template <typename To, typename From>
 		  GraphCopy<To, From>
 		  copyGraph(To& to, const From& from) {
 		    return GraphCopy<To, From>(to, from);
+		  }
 		  /// @}
 		  /// \addtogroup graph_maps
 		  /// @{
 		  /// Provides an immutable and unique id for each item in the graph.
 		  /// The IdMap class provides a unique and immutable id for each item of the
 		  /// same type (e.g. node) in the graph. This id is <ul><li>\b unique:
 		  /// different items (nodes) get different ids <li>\b immutable: the id of an
 		  /// item (node) does not change (even if you delete other nodes).  </ul>
 		  /// Through this map you get access (i.e. can read) the inner id values of
 		  /// the items stored in the graph. This map can be inverted with its member
 		  /// class \c InverseMap or with the \c operator() member.
 		  ///
 		  template <typename _Graph, typename _Item>
 		  class IdMap {
 		  public:
 		    typedef _Graph Graph;
 		    typedef int Value;
 		    typedef _Item Item;
 		    typedef _Item Key;
 		    /// \brief Constructor.
 		    ///
 		    /// Constructor of the map.
 		    explicit IdMap(const Graph& graph) : _graph(&graph) {}
 		    /// \brief Gives back the \e id of the item.
 		    ///
 		    /// Gives back the immutable and unique \e id of the item.
 		    int operator[](const Item& item) const { return _graph->id(item);}
 		    /// \brief Gives back the item by its id.
 		    ///
 		    /// Gives back the item by its id.
 		    Item operator()(int id) { return _graph->fromId(id, Item()); }
 		  private:
 		    const Graph* _graph;
 		  public:
 		    /// \brief The class represents the inverse of its owner (IdMap).
 		    ///
 		    /// The class represents the inverse of its owner (IdMap).
 		    /// \see inverse()
 		    class InverseMap {
 		    public:
 		      /// \brief Constructor.
 		      ///
 		      /// Constructor for creating an id-to-item map.
 		      explicit InverseMap(const Graph& graph) : _graph(&graph) {}
 		      /// \brief Constructor.
 		      ///
 		      /// Constructor for creating an id-to-item map.
 		      explicit InverseMap(const IdMap& map) : _graph(map._graph) {}
 		      /// \brief Gives back the given item from its id.
 		      ///
 		      /// Gives back the given item from its id.
 		      ///
 		      Item operator[](int id) const { return _graph->fromId(id, Item());}
 		    private:
 		      const Graph* _graph;
 		    };
 		    /// \brief Gives back the inverse of the map.
 		    ///
 		    /// Gives back the inverse of the IdMap.
 		    InverseMap inverse() const { return InverseMap(*_graph);}
 		  };
 		  /// \brief General invertable graph-map type.
 		  /// This type provides simple invertable graph-maps.
 		  /// The InvertableMap wraps an arbitrary ReadWriteMap
 		  /// and if a key is set to a new value then store it
 		  /// in the inverse map.
 		  ///
 		  /// The values of the map can be accessed
 		  /// with stl compatible forward iterator.
 		  ///
 		  /// \tparam _Graph The graph type.
 		  /// \tparam _Item The item type of the graph.
 		  /// \tparam _Value The value type of the map.
 		  ///
 		  /// \see IterableValueMap
 		  template <typename _Graph, typename _Item, typename _Value>
 		  class InvertableMap : protected DefaultMap<_Graph, _Item, _Value> {
 		  private:
 		    typedef DefaultMap<_Graph, _Item, _Value> Map;
 		    typedef _Graph Graph;
 		    typedef std::map<_Value, _Item> Container;
 		    Container _inv_map;
 		  public:
 		    /// The key type of InvertableMap (Node, Arc, Edge).
 		    typedef typename Map::Key Key;
 		    /// The value type of the InvertableMap.
 		    typedef typename Map::Value Value;
 		    /// \brief Constructor.
 		    ///
 		    /// Construct a new InvertableMap for the graph.
 		    ///
 		    explicit InvertableMap(const Graph& graph) : Map(graph) {}
 		    /// \brief Forward iterator for values.
 		    ///
 		    /// This iterator is an stl compatible forward
 		    /// iterator on the values of the map. The values can
 		    /// be accessed in the [beginValue, endValue) range.
 		    ///
 		    class ValueIterator
 		      : public std::iterator<std::forward_iterator_tag, Value> {
 		      friend class InvertableMap;
 		    private:
 		      ValueIterator(typename Container::const_iterator _it)
 		        : it(_it) {}
 		    public:
 		      ValueIterator() {}
 		      ValueIterator& operator++() { ++it; return *this; }
 		      ValueIterator operator++(int) {
 		        ValueIterator tmp(*this);
 		        operator++();
 		        return tmp;
+		      }
 		      const Value& operator*() const { return it->first; }
 		      const Value* operator->() const { return &(it->first); }
 		      bool operator==(ValueIterator jt) const { return it == jt.it; }
 		      bool operator!=(ValueIterator jt) const { return it != jt.it; }
 		    private:
 		      typename Container::const_iterator it;
 		    };
 		    /// \brief Returns an iterator to the first value.
 		    ///
 		    /// Returns an stl compatible iterator to the
 		    /// first value of the map. The values of the
 		    /// map can be accessed in the [beginValue, endValue)
 		    /// range.
 		    ValueIterator beginValue() const {
 		      return ValueIterator(_inv_map.begin());
+		    }
 		    /// \brief Returns an iterator after the last value.
 		    ///
 		    /// Returns an stl compatible iterator after the
 		    /// last value of the map. The values of the
 		    /// map can be accessed in the [beginValue, endValue)
 		    /// range.
 		    ValueIterator endValue() const {
 		      return ValueIterator(_inv_map.end());
+		    }
 		    /// \brief The setter function of the map.
 		    ///
 		    /// Sets the mapped value.
 		    void set(const Key& key, const Value& val) {
 		      Value oldval = Map::operator[](key);
 		      typename Container::iterator it = _inv_map.find(oldval);
 		      if (it != _inv_map.end() && it->second == key) {
 		        _inv_map.erase(it);
+		      }
 		      _inv_map.insert(make_pair(val, key));
 		      Map::set(key, val);
+		    }
 		    /// \brief The getter function of the map.
 		    ///
 		    /// It gives back the value associated with the key.
 		    typename MapTraits<Map>::ConstReturnValue
 		    operator[](const Key& key) const {
 		      return Map::operator[](key);
+		    }
 		    /// \brief Gives back the item by its value.
 		    ///
 		    /// Gives back the item by its value.
 		    Key operator()(const Value& key) const {
 		      typename Container::const_iterator it = _inv_map.find(key);
 		      return it != _inv_map.end() ? it->second : INVALID;
+		    }
 		  protected:
 		    /// \brief Erase the key from the map.
 		    ///
 		    /// Erase the key to the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void erase(const Key& key) {
 		      Value val = Map::operator[](key);
 		      typename Container::iterator it = _inv_map.find(val);
 		      if (it != _inv_map.end() && it->second == key) {
 		        _inv_map.erase(it);
+		      }
 		      Map::erase(key);
+		    }
 		    /// \brief Erase more keys from the map.
 		    ///
 		    /// Erase more keys from the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void erase(const std::vector<Key>& keys) {
 		      for (int i = 0; i < int(keys.size()); ++i) {
 		        Value val = Map::operator[](keys[i]);
 		        typename Container::iterator it = _inv_map.find(val);
 		        if (it != _inv_map.end() && it->second == keys[i]) {
 		          _inv_map.erase(it);
+		        }
+		      }
 		      Map::erase(keys);
+		    }
 		    /// \brief Clear the keys from the map and inverse map.
 		    ///
 		    /// Clear the keys from the map and inverse map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void clear() {
 		      _inv_map.clear();
 		      Map::clear();
+		    }
 		  public:
 		    /// \brief The inverse map type.
 		    ///
 		    /// The inverse of this map. The subscript operator of the map
 		    /// gives back always the item what was last assigned to the value.
 		    class InverseMap {
 		    public:
 		      /// \brief Constructor of the InverseMap.
 		      ///
 		      /// Constructor of the InverseMap.
 		      explicit InverseMap(const InvertableMap& inverted)
 		        : _inverted(inverted) {}
 		      /// The value type of the InverseMap.
 		      typedef typename InvertableMap::Key Value;
 		      /// The key type of the InverseMap.
 		      typedef typename InvertableMap::Value Key;
 		      /// \brief Subscript operator.
 		      ///
 		      /// Subscript operator. It gives back always the item
 		      /// what was last assigned to the value.
 		      Value operator[](const Key& key) const {
 		        return _inverted(key);
+		      }
 		    private:
 		      const InvertableMap& _inverted;
 		    };
 		    /// \brief It gives back the just readable inverse map.
 		    ///
 		    /// It gives back the just readable inverse map.
 		    InverseMap inverse() const {
 		      return InverseMap(*this);
+		    }
 		  };
 		  /// \brief Provides a mutable, continuous and unique descriptor for each
 		  /// item in the graph.
 		  ///
 		  /// The DescriptorMap class provides a unique and continuous (but mutable)
 		  /// descriptor (id) for each item of the same type (e.g. node) in the
 		  /// graph. This id is <ul><li>\b unique: different items (nodes) get
 		  /// different ids <li>\b continuous: the range of the ids is the set of
 		  /// integers between 0 and \c n-1, where \c n is the number of the items of
 		  /// this type (e.g. nodes) (so the id of a node can change if you delete an
 		  /// other node, i.e. this id is mutable).  </ul> This map can be inverted
 		  /// with its member class \c InverseMap, or with the \c operator() member.
 		  ///
 		  /// \tparam _Graph The graph class the \c DescriptorMap belongs to.
 		  /// \tparam _Item The Item is the Key of the Map. It may be Node, Arc or
 		  /// Edge.
 		  template <typename _Graph, typename _Item>
 		  class DescriptorMap : protected DefaultMap<_Graph, _Item, int> {
 		    typedef _Item Item;
 		    typedef DefaultMap<_Graph, _Item, int> Map;
 		  public:
 		    /// The graph class of DescriptorMap.
 		    typedef _Graph Graph;
 		    /// The key type of DescriptorMap (Node, Arc, Edge).
 		    typedef typename Map::Key Key;
 		    /// The value type of DescriptorMap.
 		    typedef typename Map::Value Value;
 		    /// \brief Constructor.
 		    ///
 		    /// Constructor for descriptor map.
 		    explicit DescriptorMap(const Graph& _graph) : Map(_graph) {
 		      Item it;
 		      const typename Map::Notifier* nf = Map::notifier();
 		      for (nf->first(it); it != INVALID; nf->next(it)) {
 		        Map::set(it, _inv_map.size());
 		        _inv_map.push_back(it);
+		      }
+		    }
 		  protected:
 		    /// \brief Add a new key to the map.
 		    ///
 		    /// Add a new key to the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void add(const Item& item) {
 		      Map::add(item);
 		      Map::set(item, _inv_map.size());
 		      _inv_map.push_back(item);
+		    }
 		    /// \brief Add more new keys to the map.
 		    ///
 		    /// Add more new keys to the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void add(const std::vector<Item>& items) {
 		      Map::add(items);
 		      for (int i = 0; i < int(items.size()); ++i) {
 		        Map::set(items[i], _inv_map.size());
 		        _inv_map.push_back(items[i]);
+		      }
+		    }
 		    /// \brief Erase the key from the map.
 		    ///
 		    /// Erase the key from the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void erase(const Item& item) {
 		      Map::set(_inv_map.back(), Map::operator[](item));
 		      _inv_map[Map::operator[](item)] = _inv_map.back();
 		      _inv_map.pop_back();
 		      Map::erase(item);
+		    }
 		    /// \brief Erase more keys from the map.
 		    ///
 		    /// Erase more keys from the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void erase(const std::vector<Item>& items) {
 		      for (int i = 0; i < int(items.size()); ++i) {
 		        Map::set(_inv_map.back(), Map::operator[](items[i]));
 		        _inv_map[Map::operator[](items[i])] = _inv_map.back();
 		        _inv_map.pop_back();
+		      }
 		      Map::erase(items);
+		    }
 		    /// \brief Build the unique map.
 		    ///
 		    /// Build the unique map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void build() {
 		      Map::build();
 		      Item it;
 		      const typename Map::Notifier* nf = Map::notifier();
 		      for (nf->first(it); it != INVALID; nf->next(it)) {
 		        Map::set(it, _inv_map.size());
 		        _inv_map.push_back(it);
+		      }
+		    }
 		    /// \brief Clear the keys from the map.
 		    ///
 		    /// Clear the keys from the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void clear() {
 		      _inv_map.clear();
 		      Map::clear();
+		    }
 		  public:
 		    /// \brief Returns the maximal value plus one.
 		    ///
 		    /// Returns the maximal value plus one in the map.
 		    unsigned int size() const {
 		      return _inv_map.size();
+		    }
 		    /// \brief Swaps the position of the two items in the map.
 		    ///
 		    /// Swaps the position of the two items in the map.
 		    void swap(const Item& p, const Item& q) {
 		      int pi = Map::operator[](p);
 		      int qi = Map::operator[](q);
 		      Map::set(p, qi);
 		      _inv_map[qi] = p;
 		      Map::set(q, pi);
 		      _inv_map[pi] = q;
+		    }
 		    /// \brief Gives back the \e descriptor of the item.
 		    ///
 		    /// Gives back the mutable and unique \e descriptor of the map.
 		    int operator[](const Item& item) const {
 		      return Map::operator[](item);
+		    }
 		    /// \brief Gives back the item by its descriptor.
 		    ///
 		    /// Gives back th item by its descriptor.
 		    Item operator()(int id) const {
 		      return _inv_map[id];
+		    }
 		  private:
 		    typedef std::vector<Item> Container;
 		    Container _inv_map;
 		  public:
 		    /// \brief The inverse map type of DescriptorMap.
 		    ///
 		    /// The inverse map type of DescriptorMap.
 		    class InverseMap {
 		    public:
 		      /// \brief Constructor of the InverseMap.
 		      ///
 		      /// Constructor of the InverseMap.
 		      explicit InverseMap(const DescriptorMap& inverted)
 		        : _inverted(inverted) {}
 		      /// The value type of the InverseMap.
 		      typedef typename DescriptorMap::Key Value;
 		      /// The key type of the InverseMap.
 		      typedef typename DescriptorMap::Value Key;
 		      /// \brief Subscript operator.
 		      ///
 		      /// Subscript operator. It gives back the item
 		      /// that the descriptor belongs to currently.
 		      Value operator[](const Key& key) const {
 		        return _inverted(key);
+		      }
 		      /// \brief Size of the map.
 		      ///
 		      /// Returns the size of the map.
 		      unsigned int size() const {
 		        return _inverted.size();
+		      }
 		    private:
 		      const DescriptorMap& _inverted;
 		    };
 		    /// \brief Gives back the inverse of the map.
 		    ///
 		    /// Gives back the inverse of the map.
 		    const InverseMap inverse() const {
 		      return InverseMap(*this);
+		    }
 		  };
 		  /// \brief Returns the source of the given arc.
 		  ///
 		  /// The SourceMap gives back the source Node of the given arc.
 		  /// \see TargetMap
 		  template <typename Digraph>
 		  class SourceMap {
 		  public:
 		    typedef typename Digraph::Node Value;
 		    typedef typename Digraph::Arc Key;
 		    /// \brief Constructor
 		    ///
 		    /// Constructor
 		    /// \param _digraph The digraph that the map belongs to.
 		    explicit SourceMap(const Digraph& digraph) : _digraph(digraph) {}
 		    /// \brief The subscript operator.
 		    ///
 		    /// The subscript operator.
 		    /// \param arc The arc
 		    /// \return The source of the arc
 		    Value operator[](const Key& arc) const {
 		      return _digraph.source(arc);
+		    }
 		  private:
 		    const Digraph& _digraph;
 		  };
 		  /// \brief Returns a \ref SourceMap class.
 		  ///
 		  /// This function just returns an \ref SourceMap class.
 		  /// \relates SourceMap
 		  template <typename Digraph>
 		  inline SourceMap<Digraph> sourceMap(const Digraph& digraph) {
 		    return SourceMap<Digraph>(digraph);
+		  }
 		  /// \brief Returns the target of the given arc.
 		  ///
 		  /// The TargetMap gives back the target Node of the given arc.
 		  /// \see SourceMap
 		  template <typename Digraph>
 		  class TargetMap {
 		  public:
 		    typedef typename Digraph::Node Value;
 		    typedef typename Digraph::Arc Key;
 		    /// \brief Constructor
 		    ///
 		    /// Constructor
 		    /// \param _digraph The digraph that the map belongs to.
 		    explicit TargetMap(const Digraph& digraph) : _digraph(digraph) {}
 		    /// \brief The subscript operator.
 		    ///
 		    /// The subscript operator.
 		    /// \param e The arc
 		    /// \return The target of the arc
 		    Value operator[](const Key& e) const {
 		      return _digraph.target(e);
+		    }
 		  private:
 		    const Digraph& _digraph;
 		  };
 		  /// \brief Returns a \ref TargetMap class.
 		  ///
 		  /// This function just returns a \ref TargetMap class.
 		  /// \relates TargetMap
 		  template <typename Digraph>
 		  inline TargetMap<Digraph> targetMap(const Digraph& digraph) {
 		    return TargetMap<Digraph>(digraph);
+		  }
 		  /// \brief Returns the "forward" directed arc view of an edge.
 		  ///
 		  /// Returns the "forward" directed arc view of an edge.
 		  /// \see BackwardMap
 		  template <typename Graph>
 		  class ForwardMap {
 		  public:
 		    typedef typename Graph::Arc Value;
 		    typedef typename Graph::Edge Key;
 		    /// \brief Constructor
 		    ///
 		    /// Constructor
 		    /// \param _graph The graph that the map belongs to.
 		    explicit ForwardMap(const Graph& graph) : _graph(graph) {}
 		    /// \brief The subscript operator.
 		    ///
 		    /// The subscript operator.
 		    /// \param key An edge
 		    /// \return The "forward" directed arc view of edge
 		    Value operator[](const Key& key) const {
 		      return _graph.direct(key, true);
+		    }
 		  private:
 		    const Graph& _graph;
 		  };
 		  /// \brief Returns a \ref ForwardMap class.
 		  ///
 		  /// This function just returns an \ref ForwardMap class.
 		  /// \relates ForwardMap
 		  template <typename Graph>
 		  inline ForwardMap<Graph> forwardMap(const Graph& graph) {
 		    return ForwardMap<Graph>(graph);
+		  }
 		  /// \brief Returns the "backward" directed arc view of an edge.
 		  ///
 		  /// Returns the "backward" directed arc view of an edge.
 		  /// \see ForwardMap
 		  template <typename Graph>
 		  class BackwardMap {
 		  public:
 		    typedef typename Graph::Arc Value;
 		    typedef typename Graph::Edge Key;
 		    /// \brief Constructor
 		    ///
 		    /// Constructor
 		    /// \param _graph The graph that the map belongs to.
 		    explicit BackwardMap(const Graph& graph) : _graph(graph) {}
 		    /// \brief The subscript operator.
 		    ///
 		    /// The subscript operator.
 		    /// \param key An edge
 		    /// \return The "backward" directed arc view of edge
 		    Value operator[](const Key& key) const {
 		      return _graph.direct(key, false);
+		    }
 		  private:
 		    const Graph& _graph;
 		  };
 		  /// \brief Returns a \ref BackwardMap class
 		  /// This function just returns a \ref BackwardMap class.
 		  /// \relates BackwardMap
 		  template <typename Graph>
 		  inline BackwardMap<Graph> backwardMap(const Graph& graph) {
 		    return BackwardMap<Graph>(graph);
+		  }
 		  /// \brief Potential difference map
 		  ///
 		  /// If there is an potential map on the nodes then we
 		  /// can get an arc map as we get the substraction of the
 		  /// values of the target and source.
 		  template <typename Digraph, typename NodeMap>
 		  class PotentialDifferenceMap {
 		  public:
 		    typedef typename Digraph::Arc Key;
 		    typedef typename NodeMap::Value Value;
 		    /// \brief Constructor
 		    ///
 		    /// Contructor of the map
 		    explicit PotentialDifferenceMap(const Digraph& digraph,
 		                                    const NodeMap& potential)
 		      : _digraph(digraph), _potential(potential) {}
 		    /// \brief Const subscription operator
 		    ///
 		    /// Const subscription operator
 		    Value operator[](const Key& arc) const {
 		      return _potential[_digraph.target(arc)] -
 		        _potential[_digraph.source(arc)];
+		    }
 		  private:
 		    const Digraph& _digraph;
 		    const NodeMap& _potential;
 		  };
 		  /// \brief Returns a PotentialDifferenceMap.
 		  ///
 		  /// This function just returns a PotentialDifferenceMap.
 		  /// \relates PotentialDifferenceMap
 		  template <typename Digraph, typename NodeMap>
 		  PotentialDifferenceMap<Digraph, NodeMap>
 		  potentialDifferenceMap(const Digraph& digraph, const NodeMap& potential) {
 		    return PotentialDifferenceMap<Digraph, NodeMap>(digraph, potential);
+		  }
 		  /// \brief Map of the node in-degrees.
 		  ///
 		  /// This map returns the in-degree of a node. Once it is constructed,
 		  /// the degrees are stored in a standard NodeMap, so each query is done
 		  /// in constant time. On the other hand, the values are updated automatically
 		  /// whenever the digraph changes.
 		  ///
 		  /// \warning Besides addNode() and addArc(), a digraph structure may provide
 		  /// alternative ways to modify the digraph. The correct behavior of InDegMap
 		  /// is not guarantied if these additional features are used. For example
 		  /// the functions \ref ListDigraph::changeSource() "changeSource()",
 		  /// \ref ListDigraph::changeTarget() "changeTarget()" and
 		  /// \ref ListDigraph::reverseArc() "reverseArc()"
 		  /// of \ref ListDigraph will \e not update the degree values correctly.
 		  ///
 		  /// \sa OutDegMap
 		  template <typename _Digraph>
 		  class InDegMap
 		    : protected ItemSetTraits<_Digraph, typename _Digraph::Arc>
 		      ::ItemNotifier::ObserverBase {
 		  public:
 		    typedef _Digraph Digraph;
 		    typedef int Value;
 		    typedef typename Digraph::Node Key;
 		    typedef typename ItemSetTraits<Digraph, typename Digraph::Arc>
 		    ::ItemNotifier::ObserverBase Parent;
 		  private:
 		    class AutoNodeMap : public DefaultMap<Digraph, Key, int> {
 		    public:
 		      typedef DefaultMap<Digraph, Key, int> Parent;
 		      AutoNodeMap(const Digraph& digraph) : Parent(digraph, 0) {}
 		      virtual void add(const Key& key) {
 		        Parent::add(key);
 		        Parent::set(key, 0);
+		      }
 		      virtual void add(const std::vector<Key>& keys) {
 		        Parent::add(keys);
 		        for (int i = 0; i < int(keys.size()); ++i) {
 		          Parent::set(keys[i], 0);
+		        }
+		      }
 		      virtual void build() {
 		        Parent::build();
 		        Key it;
 		        typename Parent::Notifier* nf = Parent::notifier();
 		        for (nf->first(it); it != INVALID; nf->next(it)) {
 		          Parent::set(it, 0);
+		        }
+		      }
 		    };
 		  public:
 		    /// \brief Constructor.
 		    ///
 		    /// Constructor for creating in-degree map.
 		    explicit InDegMap(const Digraph& digraph)
 		      : _digraph(digraph), _deg(digraph) {
 		      Parent::attach(_digraph.notifier(typename Digraph::Arc()));
 		      for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
 		        _deg[it] = countInArcs(_digraph, it);
+		      }
+		    }
 		    /// Gives back the in-degree of a Node.
 		    int operator[](const Key& key) const {
 		      return _deg[key];
+		    }
 		  protected:
 		    typedef typename Digraph::Arc Arc;
 		    virtual void add(const Arc& arc) {
 		      ++_deg[_digraph.target(arc)];
+		    }
 		    virtual void add(const std::vector<Arc>& arcs) {
 		      for (int i = 0; i < int(arcs.size()); ++i) {
 		        ++_deg[_digraph.target(arcs[i])];
+		      }
+		    }
 		    virtual void erase(const Arc& arc) {
 		      --_deg[_digraph.target(arc)];
+		    }
 		    virtual void erase(const std::vector<Arc>& arcs) {
 		      for (int i = 0; i < int(arcs.size()); ++i) {
 		        --_deg[_digraph.target(arcs[i])];
+		      }
+		    }
 		    virtual void build() {
 		      for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
 		        _deg[it] = countInArcs(_digraph, it);
+		      }
+		    }
 		    virtual void clear() {
 		      for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
 		        _deg[it] = 0;
+		      }
+		    }
 		  private:
 		    const Digraph& _digraph;
 		    AutoNodeMap _deg;
 		  };
 		  /// \brief Map of the node out-degrees.
 		  ///
 		  /// This map returns the out-degree of a node. Once it is constructed,
 		  /// the degrees are stored in a standard NodeMap, so each query is done
 		  /// in constant time. On the other hand, the values are updated automatically
 		  /// whenever the digraph changes.
 		  ///
 		  /// \warning Besides addNode() and addArc(), a digraph structure may provide
 		  /// alternative ways to modify the digraph. The correct behavior of OutDegMap
 		  /// is not guarantied if these additional features are used. For example
 		  /// the functions \ref ListDigraph::changeSource() "changeSource()",
 		  /// \ref ListDigraph::changeTarget() "changeTarget()" and
 		  /// \ref ListDigraph::reverseArc() "reverseArc()"
 		  /// of \ref ListDigraph will \e not update the degree values correctly.
 		  ///
 		  /// \sa InDegMap
 		  template <typename _Digraph>
 		  class OutDegMap
 		    : protected ItemSetTraits<_Digraph, typename _Digraph::Arc>
 		      ::ItemNotifier::ObserverBase {
 		  public:
 		    typedef _Digraph Digraph;
 		    typedef int Value;
 		    typedef typename Digraph::Node Key;
 		    typedef typename ItemSetTraits<Digraph, typename Digraph::Arc>
 		    ::ItemNotifier::ObserverBase Parent;
 		  private:
 		    class AutoNodeMap : public DefaultMap<Digraph, Key, int> {
 		    public:
 		      typedef DefaultMap<Digraph, Key, int> Parent;
 		      AutoNodeMap(const Digraph& digraph) : Parent(digraph, 0) {}
 		      virtual void add(const Key& key) {
 		        Parent::add(key);
 		        Parent::set(key, 0);
+		      }
 		      virtual void add(const std::vector<Key>& keys) {
 		        Parent::add(keys);
 		        for (int i = 0; i < int(keys.size()); ++i) {
 		          Parent::set(keys[i], 0);
+		        }
+		      }
 		      virtual void build() {
 		        Parent::build();
 		        Key it;
 		        typename Parent::Notifier* nf = Parent::notifier();
 		        for (nf->first(it); it != INVALID; nf->next(it)) {
 		          Parent::set(it, 0);
+		        }
+		      }
 		    };
 		  public:
 		    /// \brief Constructor.
 		    ///
 		    /// Constructor for creating out-degree map.
 		    explicit OutDegMap(const Digraph& digraph)
 		      : _digraph(digraph), _deg(digraph) {
 		      Parent::attach(_digraph.notifier(typename Digraph::Arc()));
 		      for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
 		        _deg[it] = countOutArcs(_digraph, it);
+		      }
+		    }
 		    /// Gives back the out-degree of a Node.
 		    int operator[](const Key& key) const {
 		      return _deg[key];
+		    }
 		  protected:
 		    typedef typename Digraph::Arc Arc;
 		    virtual void add(const Arc& arc) {
 		      ++_deg[_digraph.source(arc)];
+		    }
 		    virtual void add(const std::vector<Arc>& arcs) {
 		      for (int i = 0; i < int(arcs.size()); ++i) {
 		        ++_deg[_digraph.source(arcs[i])];
+		      }
+		    }
 		    virtual void erase(const Arc& arc) {
 		      --_deg[_digraph.source(arc)];
+		    }
 		    virtual void erase(const std::vector<Arc>& arcs) {
 		      for (int i = 0; i < int(arcs.size()); ++i) {
 		        --_deg[_digraph.source(arcs[i])];
+		      }
+		    }
 		    virtual void build() {
 		      for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
 		        _deg[it] = countOutArcs(_digraph, it);
+		      }
+		    }
 		    virtual void clear() {
 		      for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
 		        _deg[it] = 0;
+		      }
+		    }
 		  private:
 		    const Digraph& _digraph;
 		    AutoNodeMap _deg;
 		  };
 		  ///Dynamic arc look up between given endpoints.
 		  ///\ingroup gutils
 		  ///Using this class, you can find an arc in a digraph from a given
 		  ///source to a given target in amortized time <em>O(log d)</em>,
 		  ///where <em>d</em> is the out-degree of the source node.
 		  ///
 		  ///It is possible to find \e all parallel arcs between two nodes with
 		  ///the \c findFirst() and \c findNext() members.
 		  ///
 		  ///See the \ref ArcLookUp and \ref AllArcLookUp classes if your
 		  ///digraph is not changed so frequently.
 		  ///
 		  ///This class uses a self-adjusting binary search tree, Sleator's
 		  ///and Tarjan's Splay tree for guarantee the logarithmic amortized
 		  ///time bound for arc lookups. This class also guarantees the
 		  ///optimal time bound in a constant factor for any distribution of
 		  ///queries.
 		  ///
 		  ///\tparam G The type of the underlying digraph.
 		  ///
 		  ///\sa ArcLookUp
 		  ///\sa AllArcLookUp
 		  template<class G>
 		  class DynArcLookUp
 		    : protected ItemSetTraits<G, typename G::Arc>::ItemNotifier::ObserverBase
+		  {
 		  public:
 		    typedef typename ItemSetTraits<G, typename G::Arc>
 		    ::ItemNotifier::ObserverBase Parent;
 		    TEMPLATE_DIGRAPH_TYPEDEFS(G);
 		    typedef G Digraph;
 		  protected:
 		    class AutoNodeMap : public DefaultMap<G, Node, Arc> {
 		    public:
 		      typedef DefaultMap<G, Node, Arc> Parent;
 		      AutoNodeMap(const G& digraph) : Parent(digraph, INVALID) {}
 		      virtual void add(const Node& node) {
 		        Parent::add(node);
 		        Parent::set(node, INVALID);
+		      }
 		      virtual void add(const std::vector<Node>& nodes) {
 		        Parent::add(nodes);
 		        for (int i = 0; i < int(nodes.size()); ++i) {
 		          Parent::set(nodes[i], INVALID);
+		        }
+		      }
 		      virtual void build() {
 		        Parent::build();
 		        Node it;
 		        typename Parent::Notifier* nf = Parent::notifier();
 		        for (nf->first(it); it != INVALID; nf->next(it)) {
 		          Parent::set(it, INVALID);
+		        }
+		      }
 		    };
 		    const Digraph &_g;
 		    AutoNodeMap _head;
 		    typename Digraph::template ArcMap<Arc> _parent;
 		    typename Digraph::template ArcMap<Arc> _left;
 		    typename Digraph::template ArcMap<Arc> _right;
 		    class ArcLess {
 		      const Digraph &g;
 		    public:
 		      ArcLess(const Digraph &_g) : g(_g) {}
 		      bool operator()(Arc a,Arc b) const
+		      {
 		        return g.target(a)<g.target(b);
+		      }
 		    };
 		  public:
 		    ///Constructor
 		    ///Constructor.
 		    ///
 		    ///It builds up the search database.
 		    DynArcLookUp(const Digraph &g)
 		      : _g(g),_head(g),_parent(g),_left(g),_right(g)
+		    {
 		      Parent::attach(_g.notifier(typename Digraph::Arc()));
 		      refresh();
+		    }
 		  protected:
 		    virtual void add(const Arc& arc) {
 		      insert(arc);
+		    }
 		    virtual void add(const std::vector<Arc>& arcs) {
 		      for (int i = 0; i < int(arcs.size()); ++i) {
 		        insert(arcs[i]);
+		      }
+		    }
 		    virtual void erase(const Arc& arc) {
 		      remove(arc);
+		    }
 		    virtual void erase(const std::vector<Arc>& arcs) {
 		      for (int i = 0; i < int(arcs.size()); ++i) {
 		        remove(arcs[i]);
+		      }
+		    }
 		    virtual void build() {
 		      refresh();
+		    }
 		    virtual void clear() {
 		      for(NodeIt n(_g);n!=INVALID;++n) {
 		        _head.set(n, INVALID);
+		      }
+		    }
 		    void insert(Arc arc) {
 		      Node s = _g.source(arc);
 		      Node t = _g.target(arc);
 		      _left.set(arc, INVALID);
 		      _right.set(arc, INVALID);
 		      Arc e = _head[s];
 		      if (e == INVALID) {
 		        _head.set(s, arc);
 		        _parent.set(arc, INVALID);
 		        return;
+		      }
 		      while (true) {
 		        if (t < _g.target(e)) {
 		          if (_left[e] == INVALID) {
 		            _left.set(e, arc);
 		            _parent.set(arc, e);
 		            splay(arc);
 		            return;
 		          } else {
 		            e = _left[e];
+		          }
 		        } else {
 		          if (_right[e] == INVALID) {
 		            _right.set(e, arc);
 		            _parent.set(arc, e);
 		            splay(arc);
 		            return;
 		          } else {
 		            e = _right[e];
+		          }
+		        }
+		      }
+		    }
 		    void remove(Arc arc) {
 		      if (_left[arc] == INVALID) {
 		        if (_right[arc] != INVALID) {
 		          _parent.set(_right[arc], _parent[arc]);
+		        }
 		        if (_parent[arc] != INVALID) {
 		          if (_left[_parent[arc]] == arc) {
 		            _left.set(_parent[arc], _right[arc]);
 		          } else {
 		            _right.set(_parent[arc], _right[arc]);
+		          }
 		        } else {
 		          _head.set(_g.source(arc), _right[arc]);
+		        }
 		      } else if (_right[arc] == INVALID) {
 		        _parent.set(_left[arc], _parent[arc]);
 		        if (_parent[arc] != INVALID) {
 		          if (_left[_parent[arc]] == arc) {
 		            _left.set(_parent[arc], _left[arc]);
 		          } else {
 		            _right.set(_parent[arc], _left[arc]);
+		          }
 		        } else {
 		          _head.set(_g.source(arc), _left[arc]);
+		        }
 		      } else {
 		        Arc e = _left[arc];
 		        if (_right[e] != INVALID) {
 		          e = _right[e];
 		          while (_right[e] != INVALID) {
 		            e = _right[e];
+		          }
 		          Arc s = _parent[e];
 		          _right.set(_parent[e], _left[e]);
 		          if (_left[e] != INVALID) {
 		            _parent.set(_left[e], _parent[e]);
+		          }
 		          _left.set(e, _left[arc]);
 		          _parent.set(_left[arc], e);
 		          _right.set(e, _right[arc]);
 		          _parent.set(_right[arc], e);
 		          _parent.set(e, _parent[arc]);
 		          if (_parent[arc] != INVALID) {
 		            if (_left[_parent[arc]] == arc) {
 		              _left.set(_parent[arc], e);
 		            } else {
 		              _right.set(_parent[arc], e);
+		            }
+		          }
 		          splay(s);
 		        } else {
 		          _right.set(e, _right[arc]);
 		          _parent.set(_right[arc], e);
 		          if (_parent[arc] != INVALID) {
 		            if (_left[_parent[arc]] == arc) {
 		              _left.set(_parent[arc], e);
 		            } else {
 		              _right.set(_parent[arc], e);
+		            }
 		          } else {
 		            _head.set(_g.source(arc), e);
+		          }
+		        }
+		      }
+		    }
 		    Arc refreshRec(std::vector<Arc> &v,int a,int b)
+		    {
 		      int m=(a+b)/2;
 		      Arc me=v[m];
 		      if (a < m) {
 		        Arc left = refreshRec(v,a,m-1);
 		        _left.set(me, left);
 		        _parent.set(left, me);
 		      } else {
 		        _left.set(me, INVALID);
+		      }
 		      if (m < b) {
 		        Arc right = refreshRec(v,m+1,b);
 		        _right.set(me, right);
 		        _parent.set(right, me);
 		      } else {
 		        _right.set(me, INVALID);
+		      }
 		      return me;
+		    }
 		    void refresh() {
 		      for(NodeIt n(_g);n!=INVALID;++n) {
 		        std::vector<Arc> v;
 		        for(OutArcIt e(_g,n);e!=INVALID;++e) v.push_back(e);
 		        if(v.size()) {
 		          std::sort(v.begin(),v.end(),ArcLess(_g));
 		          Arc head = refreshRec(v,0,v.size()-1);
 		          _head.set(n, head);
 		          _parent.set(head, INVALID);
+		        }
 		        else _head.set(n, INVALID);
+		      }
+		    }
 		    void zig(Arc v) {
 		      Arc w = _parent[v];
 		      _parent.set(v, _parent[w]);
 		      _parent.set(w, v);
 		      _left.set(w, _right[v]);
 		      _right.set(v, w);
 		      if (_parent[v] != INVALID) {
 		        if (_right[_parent[v]] == w) {
 		          _right.set(_parent[v], v);
 		        } else {
 		          _left.set(_parent[v], v);
+		        }
+		      }
 		      if (_left[w] != INVALID){
 		        _parent.set(_left[w], w);
+		      }
+		    }
 		    void zag(Arc v) {
 		      Arc w = _parent[v];
 		      _parent.set(v, _parent[w]);
 		      _parent.set(w, v);
 		      _right.set(w, _left[v]);
 		      _left.set(v, w);
 		      if (_parent[v] != INVALID){
 		        if (_left[_parent[v]] == w) {
 		          _left.set(_parent[v], v);
 		        } else {
 		          _right.set(_parent[v], v);
+		        }
+		      }
 		      if (_right[w] != INVALID){
 		        _parent.set(_right[w], w);
+		      }
+		    }
 		    void splay(Arc v) {
 		      while (_parent[v] != INVALID) {
 		        if (v == _left[_parent[v]]) {
 		          if (_parent[_parent[v]] == INVALID) {
 		            zig(v);
 		          } else {
 		            if (_parent[v] == _left[_parent[_parent[v]]]) {
 		              zig(_parent[v]);
 		              zig(v);
 		            } else {
 		              zig(v);
 		              zag(v);
+		            }
+		          }
 		        } else {
 		          if (_parent[_parent[v]] == INVALID) {
 		            zag(v);
 		          } else {
 		            if (_parent[v] == _left[_parent[_parent[v]]]) {
 		              zag(v);
 		              zig(v);
 		            } else {
 		              zag(_parent[v]);
 		              zag(v);
+		            }
+		          }
+		        }
+		      }
 		      _head[_g.source(v)] = v;
+		    }
 		  public:
 		    ///Find an arc between two nodes.
 		    ///Find an arc between two nodes in time <em>O(</em>log<em>d)</em>, where
 		    /// <em>d</em> is the number of outgoing arcs of \c s.
 		    ///\param s The source node
 		    ///\param t The target node
 		    ///\return An arc from \c s to \c t if there exists,
 		    ///\ref INVALID otherwise.
 		    Arc operator()(Node s, Node t) const
+		    {
 		      Arc a = _head[s];
 		      while (true) {
 		        if (_g.target(a) == t) {
 		          const_cast<DynArcLookUp&>(*this).splay(a);
 		          return a;
 		        } else if (t < _g.target(a)) {
 		          if (_left[a] == INVALID) {
 		            const_cast<DynArcLookUp&>(*this).splay(a);
 		            return INVALID;
 		          } else {
 		            a = _left[a];
+		          }
 		        } else  {
 		          if (_right[a] == INVALID) {
 		            const_cast<DynArcLookUp&>(*this).splay(a);
 		            return INVALID;
 		          } else {
 		            a = _right[a];
+		          }
+		        }
+		      }
+		    }
 		    ///Find the first arc between two nodes.
 		    ///Find the first arc between two nodes in time
 		    /// <em>O(</em>log<em>d)</em>, where <em>d</em> is the number of
 		    /// outgoing arcs of \c s.
 		    ///\param s The source node
 		    ///\param t The target node
 		    ///\return An arc from \c s to \c t if there exists, \ref INVALID
 		    /// otherwise.
 		    Arc findFirst(Node s, Node t) const
+		    {
 		      Arc a = _head[s];
 		      Arc r = INVALID;
 		      while (true) {
 		        if (_g.target(a) < t) {
 		          if (_right[a] == INVALID) {
 		            const_cast<DynArcLookUp&>(*this).splay(a);
 		            return r;
 		          } else {
 		            a = _right[a];
+		          }
 		        } else {
 		          if (_g.target(a) == t) {
 		            r = a;
+		          }
 		          if (_left[a] == INVALID) {
 		            const_cast<DynArcLookUp&>(*this).splay(a);
 		            return r;
 		          } else {
 		            a = _left[a];
+		          }
+		        }
+		      }
+		    }
 		    ///Find the next arc between two nodes.
 		    ///Find the next arc between two nodes in time
 		    /// <em>O(</em>log<em>d)</em>, where <em>d</em> is the number of
 		    /// outgoing arcs of \c s.
 		    ///\param s The source node
 		    ///\param t The target node
 		    ///\return An arc from \c s to \c t if there exists, \ref INVALID
 		    /// otherwise.
 		    ///\note If \c e is not the result of the previous \c findFirst()
 		    ///operation then the amorized time bound can not be guaranteed.
 		#ifdef DOXYGEN
 		    Arc findNext(Node s, Node t, Arc a) const
 		#else
 		    Arc findNext(Node, Node t, Arc a) const
 		#endif
+		    {
 		      if (_right[a] != INVALID) {
 		        a = _right[a];
 		        while (_left[a] != INVALID) {
 		          a = _left[a];
+		        }
 		        const_cast<DynArcLookUp&>(*this).splay(a);
 		      } else {
 		        while (_parent[a] != INVALID && _right[_parent[a]] ==  a) {
 		          a = _parent[a];
+		        }
 		        if (_parent[a] == INVALID) {
 		          return INVALID;
 		        } else {
 		          a = _parent[a];
 		          const_cast<DynArcLookUp&>(*this).splay(a);
+		        }
+		      }
 		      if (_g.target(a) == t) return a;
 		      else return INVALID;
+		    }
 		  };
 		  ///Fast arc look up between given endpoints.
 		  ///\ingroup gutils
 		  ///Using this class, you can find an arc in a digraph from a given
 		  ///source to a given target in time <em>O(log d)</em>,
 		  ///where <em>d</em> is the out-degree of the source node.
 		  ///
 		  ///It is not possible to find \e all parallel arcs between two nodes.
 		  ///Use \ref AllArcLookUp for this purpose.
 		  ///
 		  ///\warning This class is static, so you should refresh() (or at least
 		  ///refresh(Node)) this data structure
 		  ///whenever the digraph changes. This is a time consuming (superlinearly
 		  ///proportional (<em>O(m</em>log<em>m)</em>) to the number of arcs).
 		  ///
 		  ///\tparam G The type of the underlying digraph.
 		  ///
 		  ///\sa DynArcLookUp
 		  ///\sa AllArcLookUp
 		  template<class G>
 		  class ArcLookUp
+		  {
 		  public:
 		    TEMPLATE_DIGRAPH_TYPEDEFS(G);
 		    typedef G Digraph;
 		  protected:
 		    const Digraph &_g;
 		    typename Digraph::template NodeMap<Arc> _head;
 		    typename Digraph::template ArcMap<Arc> _left;
 		    typename Digraph::template ArcMap<Arc> _right;
 		    class ArcLess {
 		      const Digraph &g;
 		    public:
 		      ArcLess(const Digraph &_g) : g(_g) {}
 		      bool operator()(Arc a,Arc b) const
+		      {
 		        return g.target(a)<g.target(b);
+		      }
 		    };
 		  public:
 		    ///Constructor
 		    ///Constructor.
 		    ///
 		    ///It builds up the search database, which remains valid until the digraph
 		    ///changes.
 		    ArcLookUp(const Digraph &g) :_g(g),_head(g),_left(g),_right(g) {refresh();}
 		  private:
 		    Arc refreshRec(std::vector<Arc> &v,int a,int b)
+		    {
 		      int m=(a+b)/2;
 		      Arc me=v[m];
 		      _left[me] = a<m?refreshRec(v,a,m-1):INVALID;
 		      _right[me] = m<b?refreshRec(v,m+1,b):INVALID;
 		      return me;
+		    }
 		  public:
 		    ///Refresh the data structure at a node.
 		    ///Build up the search database of node \c n.
 		    ///
 		    ///It runs in time <em>O(d</em>log<em>d)</em>, where <em>d</em> is
 		    ///the number of the outgoing arcs of \c n.
 		    void refresh(Node n)
+		    {
 		      std::vector<Arc> v;
 		      for(OutArcIt e(_g,n);e!=INVALID;++e) v.push_back(e);
 		      if(v.size()) {
 		        std::sort(v.begin(),v.end(),ArcLess(_g));
 		        _head[n]=refreshRec(v,0,v.size()-1);
+		      }
 		      else _head[n]=INVALID;
+		    }
 		    ///Refresh the full data structure.
 		    ///Build up the full search database. In fact, it simply calls
 		    ///\ref refresh(Node) "refresh(n)" for each node \c n.
 		    ///
 		    ///It runs in time <em>O(m</em>log<em>D)</em>, where <em>m</em> is
 		    ///the number of the arcs of \c n and <em>D</em> is the maximum
 		    ///out-degree of the digraph.
 		    void refresh()
+		    {
 		      for(NodeIt n(_g);n!=INVALID;++n) refresh(n);
+		    }
 		    ///Find an arc between two nodes.
 		    ///Find an arc between two nodes in time <em>O(</em>log<em>d)</em>, where
 		    /// <em>d</em> is the number of outgoing arcs of \c s.
 		    ///\param s The source node
 		    ///\param t The target node
 		    ///\return An arc from \c s to \c t if there exists,
 		    ///\ref INVALID otherwise.
 		    ///
 		    ///\warning If you change the digraph, refresh() must be called before using
 		    ///this operator. If you change the outgoing arcs of
 		    ///a single node \c n, then
 		    ///\ref refresh(Node) "refresh(n)" is enough.
 		    ///
 		    Arc operator()(Node s, Node t) const
+		    {
 		      Arc e;
 		      for(e=_head[s];
 		          e!=INVALID&&_g.target(e)!=t;
 		          e = t < _g.target(e)?_left[e]:_right[e]) ;
 		      return e;
+		    }
 		  };
 		  ///Fast look up of all arcs between given endpoints.
 		  ///\ingroup gutils
 		  ///This class is the same as \ref ArcLookUp, with the addition
 		  ///that it makes it possible to find all arcs between given endpoints.
 		  ///
 		  ///\warning This class is static, so you should refresh() (or at least
 		  ///refresh(Node)) this data structure
 		  ///whenever the digraph changes. This is a time consuming (superlinearly
 		  ///proportional (<em>O(m</em>log<em>m)</em>) to the number of arcs).
 		  ///
 		  ///\tparam G The type of the underlying digraph.
 		  ///
 		  ///\sa DynArcLookUp
 		  ///\sa ArcLookUp
 		  template<class G>
 		  class AllArcLookUp : public ArcLookUp<G>
+		  {
 		    using ArcLookUp<G>::_g;
 		    using ArcLookUp<G>::_right;
 		    using ArcLookUp<G>::_left;
 		    using ArcLookUp<G>::_head;
 		    TEMPLATE_DIGRAPH_TYPEDEFS(G);
 		    typedef G Digraph;
 		    typename Digraph::template ArcMap<Arc> _next;
 		    Arc refreshNext(Arc head,Arc next=INVALID)
+		    {
 		      if(head==INVALID) return next;
 		      else {
 		        next=refreshNext(_right[head],next);
 		//         _next[head]=next;
 		        _next[head]=( next!=INVALID && _g.target(next)==_g.target(head))
 		          ? next : INVALID;
 		        return refreshNext(_left[head],head);
+		      }
+		    }
 		    void refreshNext()
+		    {
 		      for(NodeIt n(_g);n!=INVALID;++n) refreshNext(_head[n]);
+		    }
 		  public:
 		    ///Constructor
 		    ///Constructor.
 		    ///
 		    ///It builds up the search database, which remains valid until the digraph
 		    ///changes.
 		    AllArcLookUp(const Digraph &g) : ArcLookUp<G>(g), _next(g) {refreshNext();}
 		    ///Refresh the data structure at a node.
 		    ///Build up the search database of node \c n.
 		    ///
 		    ///It runs in time <em>O(d</em>log<em>d)</em>, where <em>d</em> is
 		    ///the number of the outgoing arcs of \c n.
 		    void refresh(Node n)
+		    {
 		      ArcLookUp<G>::refresh(n);
 		      refreshNext(_head[n]);
+		    }
 		    ///Refresh the full data structure.
 		    ///Build up the full search database. In fact, it simply calls
 		    ///\ref refresh(Node) "refresh(n)" for each node \c n.
 		    ///
 		    ///It runs in time <em>O(m</em>log<em>D)</em>, where <em>m</em> is
 		    ///the number of the arcs of \c n and <em>D</em> is the maximum
 		    ///out-degree of the digraph.
 		    void refresh()
+		    {
 		      for(NodeIt n(_g);n!=INVALID;++n) refresh(_head[n]);
+		    }
 		    ///Find an arc between two nodes.
 		    ///Find an arc between two nodes.
 		    ///\param s The source node
 		    ///\param t The target node
 		    ///\param prev The previous arc between \c s and \c t. It it is INVALID or
 		    ///not given, the operator finds the first appropriate arc.
 		    ///\return An arc from \c s to \c t after \c prev or
 		    ///\ref INVALID if there is no more.
 		    ///
 		    ///For example, you can count the number of arcs from \c u to \c v in the
 		    ///following way.
 		    ///\code
 		    ///AllArcLookUp<ListDigraph> ae(g);
 		    ///...
 		    ///int n=0;
 		    ///for(Arc e=ae(u,v);e!=INVALID;e=ae(u,v,e)) n++;
 		    ///\endcode
 		    ///
 		    ///Finding the first arc take <em>O(</em>log<em>d)</em> time, where
 		    /// <em>d</em> is the number of outgoing arcs of \c s. Then, the
 		    ///consecutive arcs are found in constant time.
 		    ///
 		    ///\warning If you change the digraph, refresh() must be called before using
 		    ///this operator. If you change the outgoing arcs of
 		    ///a single node \c n, then
 		    ///\ref refresh(Node) "refresh(n)" is enough.
 		    ///
 		#ifdef DOXYGEN
 		    Arc operator()(Node s, Node t, Arc prev=INVALID) const {}
 		#else
 		    using ArcLookUp<G>::operator() ;
 		    Arc operator()(Node s, Node t, Arc prev) const
+		    {
 		      return prev==INVALID?(*this)(s,t):_next[prev];
+		    }
 		#endif
 		  };
 		  /// @}
 		} //END OF NAMESPACE LEMON
 		#endif

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