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:

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/bits/invalid.h

lemon/bits/utility.h

140

lemon/graph_utils.h

2760

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lemon/bits/enable_if.h

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 		/* -*- 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

 		/* -*- 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.
+		 *
 		 */
 		/// \ingroup demos
 		/// \file
 		/// \brief Demo of the graph drawing function \ref graphToEps()
 		///
 		/// This demo program shows examples how to use the function \ref
 		/// graphToEps(). It takes no input but simply creates seven
 		/// <tt>.eps</tt> files demonstrating the capability of \ref
 		/// 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()
+		{
 		  Palette palette;
 		  Palette paletteW(true);
 		  // Create a small digraph
 		  ListDigraph g;
 		  typedef ListDigraph::Node Node;
 		  typedef ListDigraph::NodeIt NodeIt;
 		  typedef ListDigraph::Arc Arc;
 		  typedef dim2::Point<int> Point;
 		  Node n1=g.addNode();
 		  Node n2=g.addNode();
 		  Node n3=g.addNode();
 		  Node n4=g.addNode();
 		  Node n5=g.addNode();
 		  ListDigraph::NodeMap<Point> coords(g);
 		  ListDigraph::NodeMap<double> sizes(g);
 		  ListDigraph::NodeMap<int> colors(g);
 		  ListDigraph::NodeMap<int> shapes(g);
 		  ListDigraph::ArcMap<int> acolors(g);
 		  ListDigraph::ArcMap<int> widths(g);
 		  coords[n1]=Point(50,50);  sizes[n1]=1; colors[n1]=1; shapes[n1]=0;
 		  coords[n2]=Point(50,70);  sizes[n2]=2; colors[n2]=2; shapes[n2]=2;
 		  coords[n3]=Point(70,70);  sizes[n3]=1; colors[n3]=3; shapes[n3]=0;
 		  coords[n4]=Point(70,50);  sizes[n4]=2; colors[n4]=4; shapes[n4]=1;
 		  coords[n5]=Point(85,60);  sizes[n5]=3; colors[n5]=5; shapes[n5]=2;
 		  Arc a;
 		  a=g.addArc(n1,n2); acolors[a]=0; widths[a]=1;
 		  a=g.addArc(n2,n3); acolors[a]=0; widths[a]=1;
 		  a=g.addArc(n3,n5); acolors[a]=0; widths[a]=3;
 		  a=g.addArc(n5,n4); acolors[a]=0; widths[a]=1;
 		  a=g.addArc(n4,n1); acolors[a]=0; widths[a]=1;
 		  a=g.addArc(n2,n4); acolors[a]=1; widths[a]=2;
 		  a=g.addArc(n3,n4); acolors[a]=2; widths[a]=1;
 		  IdMap<ListDigraph,Node> id(g);
 		  // Create .eps files showing the digraph with different options
 		  cout << "Create 'graph_to_eps_demo_out_1_pure.eps'" << endl;
 		  graphToEps(g,"graph_to_eps_demo_out_1_pure.eps").
 		    coords(coords).
 		    title("Sample .eps figure").
 		    copyright("(C) 2003-2008 LEMON Project").
 		    run();
 		  cout << "Create 'graph_to_eps_demo_out_2.eps'" << endl;
 		  graphToEps(g,"graph_to_eps_demo_out_2.eps").
 		    coords(coords).
 		    title("Sample .eps figure").
 		    copyright("(C) 2003-2008 LEMON Project").
 		    absoluteNodeSizes().absoluteArcWidths().
 		    nodeScale(2).nodeSizes(sizes).
 		    nodeShapes(shapes).
 		    nodeColors(composeMap(palette,colors)).
 		    arcColors(composeMap(palette,acolors)).
 		    arcWidthScale(.4).arcWidths(widths).
 		    nodeTexts(id).nodeTextSize(3).
 		    run();
 		  cout << "Create 'graph_to_eps_demo_out_3_arr.eps'" << endl;
 		  graphToEps(g,"graph_to_eps_demo_out_3_arr.eps").
 		    title("Sample .eps figure (with arrowheads)").
 		    copyright("(C) 2003-2008 LEMON Project").
 		    absoluteNodeSizes().absoluteArcWidths().
 		    nodeColors(composeMap(palette,colors)).
 		    coords(coords).
 		    nodeScale(2).nodeSizes(sizes).
 		    nodeShapes(shapes).
 		    arcColors(composeMap(palette,acolors)).
 		    arcWidthScale(.4).arcWidths(widths).
 		    nodeTexts(id).nodeTextSize(3).
 		    drawArrows().arrowWidth(2).arrowLength(2).
 		    run();
 		  // Add more arcs to the digraph
 		  a=g.addArc(n1,n4); acolors[a]=2; widths[a]=1;
 		  a=g.addArc(n4,n1); acolors[a]=1; widths[a]=2;
 		  a=g.addArc(n1,n2); acolors[a]=1; widths[a]=1;
 		  a=g.addArc(n1,n2); acolors[a]=2; widths[a]=1;
 		  a=g.addArc(n1,n2); acolors[a]=3; widths[a]=1;
 		  a=g.addArc(n1,n2); acolors[a]=4; widths[a]=1;
 		  a=g.addArc(n1,n2); acolors[a]=5; widths[a]=1;
 		  a=g.addArc(n1,n2); acolors[a]=6; widths[a]=1;
 		  a=g.addArc(n1,n2); acolors[a]=7; widths[a]=1;
 		  cout << "Create 'graph_to_eps_demo_out_4_par.eps'" << endl;
 		  graphToEps(g,"graph_to_eps_demo_out_4_par.eps").
 		    title("Sample .eps figure (parallel arcs)").
 		    copyright("(C) 2003-2008 LEMON Project").
 		    absoluteNodeSizes().absoluteArcWidths().
 		    nodeShapes(shapes).
 		    coords(coords).
 		    nodeScale(2).nodeSizes(sizes).
 		    nodeColors(composeMap(palette,colors)).
 		    arcColors(composeMap(palette,acolors)).
 		    arcWidthScale(.4).arcWidths(widths).
 		    nodeTexts(id).nodeTextSize(3).
 		    enableParallel().parArcDist(1.5).
 		    run();
 		  cout << "Create 'graph_to_eps_demo_out_5_par_arr.eps'" << endl;
 		  graphToEps(g,"graph_to_eps_demo_out_5_par_arr.eps").
 		    title("Sample .eps figure (parallel arcs and arrowheads)").
 		    copyright("(C) 2003-2008 LEMON Project").
 		    absoluteNodeSizes().absoluteArcWidths().
 		    nodeScale(2).nodeSizes(sizes).
 		    coords(coords).
 		    nodeShapes(shapes).
 		    nodeColors(composeMap(palette,colors)).
 		    arcColors(composeMap(palette,acolors)).
 		    arcWidthScale(.3).arcWidths(widths).
 		    nodeTexts(id).nodeTextSize(3).
 		    enableParallel().parArcDist(1).
 		    drawArrows().arrowWidth(1).arrowLength(1).
 		    run();

lemon/Makefile.am

Show inline comments

 		EXTRA_DIST += \
 			lemon/lemon.pc.in \
 			lemon/CMakeLists.txt
 		pkgconfig_DATA += lemon/lemon.pc
 		lib_LTLIBRARIES += lemon/libemon.la
 		lemon_libemon_la_SOURCES = \
 		        lemon/arg_parser.cc \
 		        lemon/base.cc \
 		        lemon/color.cc \
 		        lemon/random.cc
 		lemon_libemon_la_CXXFLAGS = $(GLPK_CFLAGS) $(CPLEX_CFLAGS) $(SOPLEX_CXXFLAGS)
 		lemon_libemon_la_LDFLAGS = $(GLPK_LIBS) $(CPLEX_LIBS) $(SOPLEX_LIBS)
 		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 \
 			lemon/smart_graph.h \
 		        lemon/time_measure.h \
 		        lemon/tolerance.h \
 			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/concepts/path.h

lemon/base.cc

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.
+		 *
 		 */
 		///\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();
 		#endif
 		} //namespace lemon

lemon/bfs.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_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.
 		  ///Default traits class of Bfs class.
 		  ///\tparam GR Digraph type.
 		  template<class GR>
 		  struct BfsDefaultTraits
+		  {
 		    ///The digraph type the algorithm runs on.
 		    typedef GR Digraph;
 		    ///\brief The type of the map that stores the last
 		    ///arcs of the shortest paths.
 		    ///
 		    ///The type of the map that stores the last
 		    ///arcs of the shortest paths.
 		    ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
 		    ///
 		    typedef typename Digraph::template NodeMap<typename GR::Arc> PredMap;
 		    ///Instantiates a PredMap.
 		    ///This function instantiates a \ref PredMap.
 		    ///\param G is the digraph, to which we would like to define the PredMap.
 		    ///\todo The digraph alone may be insufficient to initialize
 		    static PredMap *createPredMap(const GR &G)
+		    {
 		      return new PredMap(G);
+		    }
 		    ///The type of the map that indicates which nodes are processed.
 		    ///The type of the map that indicates which nodes are processed.
 		    ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
 		    ///\todo named parameter to set this type, function to read and write.
 		    typedef NullMap<typename Digraph::Node,bool> ProcessedMap;
 		    ///Instantiates a ProcessedMap.
 		    ///This function instantiates a \ref ProcessedMap.
 		    ///\param g is the digraph, to which
 		    ///we would like to define the \ref ProcessedMap
 		#ifdef DOXYGEN
 		    static ProcessedMap *createProcessedMap(const GR &g)
 		#else
 		    static ProcessedMap *createProcessedMap(const GR &)
 		#endif
+		    {
 		      return new ProcessedMap();
+		    }
 		    ///The type of the map that indicates which nodes are reached.
 		    ///The type of the map that indicates which nodes are reached.
 		    ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
 		    ///\todo named parameter to set this type, function to read and write.
 		    typedef typename Digraph::template NodeMap<bool> ReachedMap;
 		    ///Instantiates a ReachedMap.
 		    ///This function instantiates a \ref ReachedMap.
 		    ///\param G is the digraph, to which
 		    ///we would like to define the \ref ReachedMap.
 		    static ReachedMap *createReachedMap(const GR &G)
+		    {
 		      return new ReachedMap(G);
+		    }
 		    ///The type of the map that stores the dists of the nodes.
 		    ///The type of the map that stores the dists of the nodes.
 		    ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
 		    ///
 		    typedef typename Digraph::template NodeMap<int> DistMap;
 		    ///Instantiates a DistMap.
 		    ///This function instantiates a \ref DistMap.
 		    ///\param G is the digraph, to which we would like to define
 		    ///the \ref DistMap
 		    static DistMap *createDistMap(const GR &G)
+		    {
 		      return new DistMap(G);
+		    }
 		  };
 		  ///%BFS algorithm class.
 		  ///\ingroup search
 		  ///This class provides an efficient implementation of the %BFS algorithm.
 		  ///
 		  ///\tparam GR The digraph type the algorithm runs on. The default value is
 		  ///\ref ListDigraph. The value of GR is not used directly by Bfs, it
 		  ///is only passed to \ref BfsDefaultTraits.
 		  ///\tparam TR Traits class to set various data types used by the algorithm.
 		  ///The default traits class is
 		  ///\ref BfsDefaultTraits "BfsDefaultTraits<GR>".
 		  ///See \ref BfsDefaultTraits for the documentation of
 		  ///a Bfs traits class.
 		#ifdef DOXYGEN
 		  template <typename GR,
 		            typename TR>
 		#else
 		  template <typename GR=ListDigraph,
 		            typename TR=BfsDefaultTraits<GR> >
 		#endif
 		  class Bfs {
 		  public:
 		    /**
 		     * \brief \ref Exception for uninitialized parameters.
+		     *
 		     * This error represents problems in the initialization
 		     * of the parameters of the algorithms.
 		     */
 		    class UninitializedParameter : public lemon::UninitializedParameter {
 		    public:
 		      virtual const char* what() const throw() {
 		        return "lemon::Bfs::UninitializedParameter";
+		      }
 		    };
 		    typedef TR Traits;
 		    ///The type of the underlying digraph.
 		    typedef typename TR::Digraph Digraph;
 		    ///\brief The type of the map that stores the last
 		    ///arcs of the shortest paths.
 		    typedef typename TR::PredMap PredMap;
 		    ///The type of the map indicating which nodes are reached.

lemon/bits/alteration_notifier.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_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
 		  ///
 		  /// \brief Notifier class to notify observes about alterations in
 		  /// a container.
 		  ///
 		  /// The simple graph's can be refered as two containers, one node container
 		  /// and one edge container. But they are not standard containers they
 		  /// does not store values directly they are just key continars for more
 		  /// value containers which are the node and edge maps.
 		  ///
 		  /// The graph's node and edge sets can be changed as we add or erase
 		  /// nodes and edges in the graph. Lemon would like to handle easily
 		  /// that the node and edge maps should contain values for all nodes or
 		  /// edges. If we want to check on every indicing if the map contains
 		  /// the current indicing key that cause a drawback in the performance
 		  /// in the library. We use another solution we notify all maps about
 		  /// an alteration in the graph, which cause only drawback on the
 		  /// alteration of the graph.
 		  ///
 		  /// This class provides an interface to the container. The \e first() and \e
 		  /// next() member functions make possible to iterate on the keys of the
 		  /// container. The \e id() function returns an integer id for each key.
 		  /// The \e maxId() function gives back an upper bound of the ids.
 		  ///
 		  /// For the proper functonality of this class, we should notify it
 		  /// about each alteration in the container. The alterations have four type
 		  /// as \e add(), \e erase(), \e build() and \e clear(). The \e add() and
 		  /// \e erase() signals that only one or few items added or erased to or
 		  /// from the graph. If all items are erased from the graph or from an empty
 		  /// graph a new graph is builded then it can be signaled with the
 		  /// clear() and build() members. Important rule that if we erase items
 		  /// from graph we should first signal the alteration and after that erase
 		  /// them from the container, on the other way on item addition we should
 		  /// first extend the container and just after that signal the alteration.
 		  ///
 		  /// The alteration can be observed with a class inherited from the
 		  /// \e ObserverBase nested class. The signals can be handled with
 		  /// overriding the virtual functions defined in the base class.  The
 		  /// observer base can be attached to the notifier with the
 		  /// \e attach() member and can be detached with detach() function. The
 		  /// alteration handlers should not call any function which signals
 		  /// an other alteration in the same notifier and should not
 		  /// detach any observer from the notifier.
 		  ///
 		  /// Alteration observers try to be exception safe. If an \e add() or
 		  /// a \e clear() function throws an exception then the remaining
 		  /// observeres will not be notified and the fulfilled additions will
 		  /// be rolled back by calling the \e erase() or \e clear()
 		  /// functions. Thence the \e erase() and \e clear() should not throw
 		  /// exception. Actullay, it can be throw only
 		  /// \ref AlterationObserver::ImmediateDetach ImmediateDetach
 		  /// exception which detach the observer from the notifier.
 		  ///
 		  /// There are some place when the alteration observing is not completly
 		  /// reliable. If we want to carry out the node degree in the graph
 		  /// as in the \ref InDegMap and we use the reverseEdge that cause
 		  /// unreliable functionality. Because the alteration observing signals
 		  /// only erasing and adding but not the reversing it will stores bad
 		  /// degrees. The sub graph adaptors cannot signal the alterations because
 		  /// just a setting in the filter map can modify the graph and this cannot
 		  /// be watched in any way.
 		  ///
 		  /// \param _Container The container which is observed.
 		  /// \param _Item The item type which is obserbved.
 		  template <typename _Container, typename _Item>
 		  class AlterationNotifier {
 		  public:
 		    typedef True Notifier;
 		    typedef _Container Container;
 		    typedef _Item Item;
 		    /// \brief Exception which can be called from \e clear() and
 		    /// \e erase().
 		    ///
 		    /// From the \e clear() and \e erase() function only this
 		    /// exception is allowed to throw. The exception immediatly
 		    /// detaches the current observer from the notifier. Because the
 		    /// \e clear() and \e erase() should not throw other exceptions
 		    /// it can be used to invalidate the observer.
 		    struct ImmediateDetach {};
 		    /// \brief ObserverBase is the base class for the observers.
 		    ///
 		    /// ObserverBase is the abstract base class for the observers.
 		    /// It will be notified about an item was inserted into or
 		    /// erased from the graph.
 		    ///
 		    /// The observer interface contains some pure virtual functions
 		    /// to override. The add() and erase() functions are
 		    /// to notify the oberver when one item is added or
 		    /// erased.
 		    ///
 		    /// The build() and clear() members are to notify the observer
 		    /// about the container is built from an empty container or
 		    /// is cleared to an empty container.
 		    class ObserverBase {
 		    protected:
 		      typedef AlterationNotifier Notifier;
 		      friend class AlterationNotifier;
 		      /// \brief Default constructor.
 		      ///
 		      /// Default constructor for ObserverBase.
 		      ///
 		      ObserverBase() : _notifier(0) {}
 		      /// \brief Constructor which attach the observer into notifier.
 		      ///
 		      /// Constructor which attach the observer into notifier.
 		      ObserverBase(AlterationNotifier& nf) {
 		        attach(nf);
+		      }
 		      /// \brief Constructor which attach the obserever to the same notifier.
 		      ///
 		      /// Constructor which attach the obserever to the same notifier as

lemon/bits/base_extender.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_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>
 		///\ingroup digraphbits
 		///\file
 		///\brief Extenders for the digraph types
 		namespace lemon {
 		  /// \ingroup digraphbits
 		  ///
 		  /// \brief BaseDigraph to BaseGraph extender
 		  template <typename Base>
 		  class UndirDigraphExtender : public Base {
 		  public:
 		    typedef Base Parent;
 		    typedef typename Parent::Arc Edge;
 		    typedef typename Parent::Node Node;
 		    typedef True UndirectedTag;
 		    class Arc : public Edge {
 		      friend class UndirDigraphExtender;
 		    protected:
 		      bool forward;
 		      Arc(const Edge &ue, bool _forward) :
 		        Edge(ue), forward(_forward) {}
 		    public:
 		      Arc() {}
 		      /// Invalid arc constructor
 		      Arc(Invalid i) : Edge(i), forward(true) {}
 		      bool operator==(const Arc &that) const {
 		        return forward==that.forward && Edge(*this)==Edge(that);
+		      }
 		      bool operator!=(const Arc &that) const {
 		        return forward!=that.forward || Edge(*this)!=Edge(that);
+		      }
 		      bool operator<(const Arc &that) const {
 		        return forward<that.forward ||
 		          (!(that.forward<forward) && Edge(*this)<Edge(that));
+		      }
 		    };
 		    using Parent::source;
 		    /// Source of the given Arc.
 		    Node source(const Arc &e) const {
 		      return e.forward ? Parent::source(e) : Parent::target(e);
+		    }
 		    using Parent::target;
 		    /// Target of the given Arc.
 		    Node target(const Arc &e) const {
 		      return e.forward ? Parent::target(e) : Parent::source(e);
+		    }
 		    /// \brief Directed arc from an edge.
 		    ///
 		    /// Returns a directed arc corresponding to the specified Edge.
 		    /// If the given bool is true the given edge and the
 		    /// returned arc have the same source node.
 		    static Arc direct(const Edge &ue, bool d) {
 		      return Arc(ue, d);
+		    }
 		    /// Returns whether the given directed arc is same orientation as the
 		    /// corresponding edge.
 		    ///
 		    /// \todo reference to the corresponding point of the undirected digraph
 		    /// concept. "What does the direction of an edge mean?"
 		    static bool direction(const Arc &e) { return e.forward; }
 		    using Parent::first;
 		    using Parent::next;
 		    void first(Arc &e) const {
 		      Parent::first(e);
 		      e.forward=true;
+		    }
 		    void next(Arc &e) const {
 		      if( e.forward ) {
 		        e.forward = false;
+		      }
 		      else {
 		        Parent::next(e);
 		        e.forward = true;
+		      }
+		    }
 		    void firstOut(Arc &e, const Node &n) const {
 		      Parent::firstIn(e,n);
 		      if( Edge(e) != INVALID ) {
 		        e.forward = false;
+		      }
 		      else {
 		        Parent::firstOut(e,n);
 		        e.forward = true;
+		      }
+		    }
 		    void nextOut(Arc &e) const {
 		      if( ! e.forward ) {
 		        Node n = Parent::target(e);
 		        Parent::nextIn(e);
 		        if( Edge(e) == INVALID ) {
 		          Parent::firstOut(e, n);
 		          e.forward = true;
+		        }
+		      }
 		      else {
 		        Parent::nextOut(e);
+		      }
+		    }

lemon/bits/graph_extender.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_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
 		///\file
 		///\brief Extenders for the digraph types
 		namespace lemon {
 		  /// \ingroup graphbits
 		  ///
 		  /// \brief Extender for the Digraphs
 		  template <typename Base>
 		  class DigraphExtender : public Base {
 		  public:
 		    typedef Base Parent;
 		    typedef DigraphExtender Digraph;
 		    // Base extensions
 		    typedef typename Parent::Node Node;
 		    typedef typename Parent::Arc Arc;
 		    int maxId(Node) const {
 		      return Parent::maxNodeId();
+		    }
 		    int maxId(Arc) const {
 		      return Parent::maxArcId();
+		    }
 		    Node fromId(int id, Node) const {
 		      return Parent::nodeFromId(id);
+		    }
 		    Arc fromId(int id, Arc) const {
 		      return Parent::arcFromId(id);
+		    }
 		    Node oppositeNode(const Node &node, const Arc &arc) const {
 		      if (node == Parent::source(arc))
 		        return Parent::target(arc);
 		      else if(node == Parent::target(arc))
 		        return Parent::source(arc);
 		      else
 		        return INVALID;
+		    }
 		    // Alterable extension
 		    typedef AlterationNotifier<DigraphExtender, Node> NodeNotifier;
 		    typedef AlterationNotifier<DigraphExtender, Arc> ArcNotifier;
 		  protected:
 		    mutable NodeNotifier node_notifier;
 		    mutable ArcNotifier arc_notifier;
 		  public:
 		    NodeNotifier& notifier(Node) const {
 		      return node_notifier;
+		    }
 		    ArcNotifier& notifier(Arc) const {
 		      return arc_notifier;
+		    }
 		    class NodeIt : public Node {
 		      const Digraph* _digraph;
 		    public:
 		      NodeIt() {}
 		      NodeIt(Invalid i) : Node(i) { }
 		      explicit NodeIt(const Digraph& digraph) : _digraph(&digraph) {
 		        _digraph->first(static_cast<Node&>(*this));
+		      }
 		      NodeIt(const Digraph& digraph, const Node& node)
 		        : Node(node), _digraph(&digraph) {}
 		      NodeIt& operator++() {
 		        _digraph->next(*this);
 		        return *this;
+		      }
 		    };
 		    class ArcIt : public Arc {
 		      const Digraph* _digraph;
 		    public:
 		      ArcIt() { }
 		      ArcIt(Invalid i) : Arc(i) { }
 		      explicit ArcIt(const Digraph& digraph) : _digraph(&digraph) {
 		        _digraph->first(static_cast<Arc&>(*this));
+		      }
 		      ArcIt(const Digraph& digraph, const Arc& arc) :
 		        Arc(arc), _digraph(&digraph) { }
 		      ArcIt& operator++() {
 		        _digraph->next(*this);
 		        return *this;
+		      }
 		    };
 		    class OutArcIt : public Arc {
 		      const Digraph* _digraph;
 		    public:
 		      OutArcIt() { }
 		      OutArcIt(Invalid i) : Arc(i) { }
 		      OutArcIt(const Digraph& digraph, const Node& node)

lemon/bits/traits.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_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;
 		  };
 		  template <typename Graph>
 		  struct NodeNotifierIndicator<
 		    Graph,
 		    typename enable_if<typename Graph::NodeNotifier::Notifier, void>::type
 		  > {
 		    typedef typename Graph::NodeNotifier Type;
 		  };
 		  template <typename _Graph>
 		  class ItemSetTraits<_Graph, typename _Graph::Node> {
 		  public:
 		    typedef _Graph Graph;
 		    typedef typename Graph::Node Item;
 		    typedef typename Graph::NodeIt ItemIt;
 		    typedef typename NodeNotifierIndicator<Graph>::Type ItemNotifier;
 		    template <typename _Value>
 		    class Map : public Graph::template NodeMap<_Value> {
 		    public:
 		      typedef typename Graph::template NodeMap<_Value> Parent;
 		      typedef typename Graph::template NodeMap<_Value> Type;
 		      typedef typename Parent::Value Value;
 		      Map(const Graph& _digraph) : Parent(_digraph) {}
 		      Map(const Graph& _digraph, const Value& _value)
 		        : Parent(_digraph, _value) {}
 		     };
 		  };
 		  template <typename Graph, typename Enable = void>
 		  struct ArcNotifierIndicator {
 		    typedef InvalidType Type;
 		  };
 		  template <typename Graph>
 		  struct ArcNotifierIndicator<
 		    Graph,
 		    typename enable_if<typename Graph::ArcNotifier::Notifier, void>::type
 		  > {
 		    typedef typename Graph::ArcNotifier Type;
 		  };
 		  template <typename _Graph>
 		  class ItemSetTraits<_Graph, typename _Graph::Arc> {
 		  public:
 		    typedef _Graph Graph;
 		    typedef typename Graph::Arc Item;
 		    typedef typename Graph::ArcIt ItemIt;
 		    typedef typename ArcNotifierIndicator<Graph>::Type ItemNotifier;
 		    template <typename _Value>
 		    class Map : public Graph::template ArcMap<_Value> {
 		    public:
 		      typedef typename Graph::template ArcMap<_Value> Parent;
 		      typedef typename Graph::template ArcMap<_Value> Type;
 		      typedef typename Parent::Value Value;
 		      Map(const Graph& _digraph) : Parent(_digraph) {}
 		      Map(const Graph& _digraph, const Value& _value)
 		        : Parent(_digraph, _value) {}
 		    };
 		  };
 		  template <typename Graph, typename Enable = void>
 		  struct EdgeNotifierIndicator {
 		    typedef InvalidType Type;
 		  };
 		  template <typename Graph>
 		  struct EdgeNotifierIndicator<
 		    Graph,
 		    typename enable_if<typename Graph::EdgeNotifier::Notifier, void>::type
 		  > {
 		    typedef typename Graph::EdgeNotifier Type;
 		  };
 		  template <typename _Graph>
 		  class ItemSetTraits<_Graph, typename _Graph::Edge> {
 		  public:
 		    typedef _Graph Graph;
 		    typedef typename Graph::Edge Item;
 		    typedef typename Graph::EdgeIt ItemIt;
 		    typedef typename EdgeNotifierIndicator<Graph>::Type ItemNotifier;
 		    template <typename _Value>
 		    class Map : public Graph::template EdgeMap<_Value> {
 		    public:
 		      typedef typename Graph::template EdgeMap<_Value> Parent;
 		      typedef typename Graph::template EdgeMap<_Value> Type;
 		      typedef typename Parent::Value Value;
 		      Map(const Graph& _digraph) : Parent(_digraph) {}
 		      Map(const Graph& _digraph, const Value& _value)
 		        : Parent(_digraph, _value) {}
 		    };
 		  };
 		  template <typename Map, typename Enable = void>
 		  struct MapTraits {
 		    typedef False ReferenceMapTag;
 		    typedef typename Map::Key Key;
 		    typedef typename Map::Value Value;
 		    typedef Value ConstReturnValue;
 		    typedef Value ReturnValue;
 		  };
 		  template <typename Map>

lemon/bits/vector_map.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_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
 		///\brief Vector based graph maps.
 		namespace lemon {
 		  /// \ingroup graphbits
 		  ///
 		  /// \brief Graph map based on the std::vector storage.
 		  ///
 		  /// The VectorMap template class is graph map structure what
 		  /// automatically updates the map when a key is added to or erased from
 		  /// the map. This map type uses the std::vector to store the values.
 		  ///
 		  /// \tparam _Notifier The AlterationNotifier that will notify this map.
 		  /// \tparam _Item The item type of the graph items.
 		  /// \tparam _Value The value type of the map.
 		  /// \todo Fix the doc: there is _Graph parameter instead of _Notifier.
 		  template <typename _Graph, typename _Item, typename _Value>
 		  class VectorMap
 		    : public ItemSetTraits<_Graph, _Item>::ItemNotifier::ObserverBase {
 		  private:
 		    /// The container type of the map.
 		    typedef std::vector<_Value> Container;
 		  public:
 		    /// The graph type of the map.
 		    typedef _Graph Graph;
 		    /// The item type of the map.
 		    typedef _Item Item;
 		    /// The reference map tag.
 		    typedef True ReferenceMapTag;
 		    /// The key type of the map.
 		    typedef _Item Key;
 		    /// The value type of the map.
 		    typedef _Value Value;
 		    /// The notifier type.
 		    typedef typename ItemSetTraits<_Graph, _Item>::ItemNotifier Notifier;
 		    /// The map type.
 		    typedef VectorMap Map;
 		    /// The base class of the map.
 		    typedef typename Notifier::ObserverBase Parent;
 		    /// The reference type of the map;
 		    typedef typename Container::reference Reference;
 		    /// The const reference type of the map;
 		    typedef typename Container::const_reference ConstReference;
 		    /// \brief Constructor to attach the new map into the notifier.
 		    ///
 		    /// It constructs a map and attachs it into the notifier.
 		    /// It adds all the items of the graph to the map.
 		    VectorMap(const Graph& graph) {
 		      Parent::attach(graph.notifier(Item()));
 		      container.resize(Parent::notifier()->maxId() + 1);
+		    }
 		    /// \brief Constructor uses given value to initialize the map.
 		    ///
 		    /// It constructs a map uses a given value to initialize the map.
 		    /// It adds all the items of the graph to the map.
 		    VectorMap(const Graph& graph, const Value& value) {
 		      Parent::attach(graph.notifier(Item()));
 		      container.resize(Parent::notifier()->maxId() + 1, value);
+		    }
 		    /// \brief Copy constructor
 		    ///
 		    /// Copy constructor.
 		    VectorMap(const VectorMap& _copy) : Parent() {
 		      if (_copy.attached()) {
 		        Parent::attach(*_copy.notifier());
 		        container = _copy.container;
+		      }
+		    }
 		    /// \brief Assign operator.
 		    ///
 		    /// This operator assigns for each item in the map the
 		    /// value mapped to the same item in the copied map.
 		    /// The parameter map should be indiced with the same
 		    /// itemset because this assign operator does not change
 		    /// the container of the map.
 		    VectorMap& operator=(const VectorMap& cmap) {
 		      return operator=<VectorMap>(cmap);
+		    }
 		    /// \brief Template assign operator.
 		    ///
 		    /// The given parameter should be conform to the ReadMap
 		    /// concecpt and could be indiced by the current item set of
 		    /// the NodeMap. In this case the value for each item
 		    /// is assigned by the value of the given ReadMap.
 		    template <typename CMap>
 		    VectorMap& operator=(const CMap& cmap) {
 		      checkConcept<concepts::ReadMap<Key, _Value>, CMap>();
 		      const typename Parent::Notifier* nf = Parent::notifier();
 		      Item it;
 		      for (nf->first(it); it != INVALID; nf->next(it)) {
 		        set(it, cmap[it]);
+		      }
 		      return *this;
+		    }
 		  public:
 		    /// \brief The subcript operator.
 		    ///
 		    /// The subscript operator. The map can be subscripted by the
 		    /// actual items of the graph.
 		    Reference operator[](const Key& key) {
 		      return container[Parent::notifier()->id(key)];
+		    }
 		    /// \brief The const subcript operator.
 		    ///

lemon/concepts/digraph.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_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
 		    ///
 		    /// \brief Class describing the concept of directed graphs.
 		    ///
 		    /// This class describes the \ref concept "concept" of the
 		    /// immutable directed digraphs.
 		    ///
 		    /// Note that actual digraph implementation like @ref ListDigraph or
 		    /// @ref SmartDigraph may have several additional functionality.
 		    ///
 		    /// \sa concept
 		    class Digraph {
 		    private:
 		      ///Digraphs are \e not copy constructible. Use DigraphCopy() instead.
 		      ///Digraphs are \e not copy constructible. Use DigraphCopy() instead.
 		      ///
 		      Digraph(const Digraph &) {};
 		      ///\brief Assignment of \ref Digraph "Digraph"s to another ones are
 		      ///\e not allowed. Use DigraphCopy() instead.
 		      ///Assignment of \ref Digraph "Digraph"s to another ones are
 		      ///\e not allowed.  Use DigraphCopy() instead.
 		      void operator=(const Digraph &) {}
 		    public:
 		      ///\e
 		      /// Defalult constructor.
 		      /// Defalult constructor.
 		      ///
 		      Digraph() { }
 		      /// Class for identifying a node of the digraph
 		      /// This class identifies a node of the digraph. It also serves
 		      /// as a base class of the node iterators,
 		      /// thus they will convert to this type.
 		      class Node {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        Node() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        Node(const Node&) { }
 		        /// Invalid constructor \& conversion.
 		        /// This constructor initializes the iterator to be invalid.
 		        /// \sa Invalid for more details.
 		        Node(Invalid) { }
 		        /// Equality operator
 		        /// Two iterators are equal if and only if they point to the
 		        /// same object or both are invalid.
 		        bool operator==(Node) const { return true; }
 		        /// Inequality operator
 		        /// \sa operator==(Node n)
 		        ///
 		        bool operator!=(Node) const { return true; }
 		        /// Artificial ordering operator.
 		        /// To allow the use of digraph descriptors as key type in std::map or
 		        /// similar associative container we require this.
 		        ///
 		        /// \note This operator only have to define some strict ordering of
 		        /// the items; this order has nothing to do with the iteration
 		        /// ordering of the items.
 		        bool operator<(Node) const { return false; }
 		      };
 		      /// This iterator goes through each node.
 		      /// This iterator goes through each node.
 		      /// Its usage is quite simple, for example you can count the number
 		      /// of nodes in digraph \c g of type \c Digraph like this:
 		      ///\code
 		      /// int count=0;
 		      /// for (Digraph::NodeIt n(g); n!=INVALID; ++n) ++count;
 		      ///\endcode
 		      class NodeIt : public Node {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        NodeIt() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        NodeIt(const NodeIt& n) : Node(n) { }
 		        /// Invalid constructor \& conversion.
 		        /// Initialize the iterator to be invalid.
 		        /// \sa Invalid for more details.
 		        NodeIt(Invalid) { }
 		        /// Sets the iterator to the first node.
 		        /// Sets the iterator to the first node of \c g.
 		        ///
 		        NodeIt(const Digraph&) { }
 		        /// Node -> NodeIt conversion.
 		        /// Sets the iterator to the node of \c the digraph pointed by
 		        /// the trivial iterator.
 		        /// This feature necessitates that each time we
 		        /// iterate the arc-set, the iteration order is the same.
 		        NodeIt(const Digraph&, const Node&) { }
 		        /// Next node.
 		        /// Assign the iterator to the next node.

lemon/concepts/graph.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.
+		 *
 		 */
 		///\ingroup graph_concepts
 		///\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.
 		    ///
 		    /// This class describes the common interface of all Undirected
 		    /// Graphs.
 		    ///
 		    /// As all concept describing classes it provides only interface
 		    /// without any sensible implementation. So any algorithm for
 		    /// undirected graph should compile with this class, but it will not
 		    /// run properly, of course.
 		    ///
 		    /// The LEMON undirected graphs also fulfill the concept of
 		    /// directed graphs (\ref lemon::concepts::Digraph "Digraph
 		    /// Concept"). Each edges can be seen as two opposite
 		    /// directed arc and consequently the undirected graph can be
 		    /// seen as the direceted graph of these directed arcs. The
 		    /// Graph has the Edge inner class for the edges and
 		    /// the Arc type for the directed arcs. The Arc type is
 		    /// convertible to Edge or inherited from it so from a directed
 		    /// arc we can get the represented edge.
 		    ///
 		    /// In the sense of the LEMON each edge has a default
 		    /// direction (it should be in every computer implementation,
 		    /// because the order of edge's nodes defines an
 		    /// orientation). With the default orientation we can define that
 		    /// the directed arc is forward or backward directed. With the \c
 		    /// direction() and \c direct() function we can get the direction
 		    /// of the directed arc and we can direct an edge.
 		    ///
 		    /// The EdgeIt is an iterator for the edges. We can use
 		    /// the EdgeMap to map values for the edges. The InArcIt and
 		    /// OutArcIt iterates on the same edges but with opposite
 		    /// direction. The IncEdgeIt iterates also on the same edges
 		    /// as the OutArcIt and InArcIt but it is not convertible to Arc just
 		    /// to Edge.
 		    class Graph {
 		    public:
 		      /// \brief The undirected graph should be tagged by the
 		      /// UndirectedTag.
 		      ///
 		      /// The undirected graph should be tagged by the UndirectedTag. This
 		      /// tag helps the enable_if technics to make compile time
 		      /// specializations for undirected graphs.
 		      typedef True UndirectedTag;
 		      /// \brief The base type of node iterators,
 		      /// or in other words, the trivial node iterator.
 		      ///
 		      /// This is the base type of each node iterator,
 		      /// thus each kind of node iterator converts to this.
 		      /// More precisely each kind of node iterator should be inherited
 		      /// from the trivial node iterator.
 		      class Node {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        Node() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        Node(const Node&) { }
 		        /// Invalid constructor \& conversion.
 		        /// This constructor initializes the iterator to be invalid.
 		        /// \sa Invalid for more details.
 		        Node(Invalid) { }
 		        /// Equality operator
 		        /// Two iterators are equal if and only if they point to the
 		        /// same object or both are invalid.
 		        bool operator==(Node) const { return true; }
 		        /// Inequality operator
 		        /// \sa operator==(Node n)
 		        ///
 		        bool operator!=(Node) const { return true; }
 		        /// Artificial ordering operator.
 		        /// To allow the use of graph descriptors as key type in std::map or
 		        /// similar associative container we require this.
 		        ///
 		        /// \note This operator only have to define some strict ordering of
 		        /// the items; this order has nothing to do with the iteration
 		        /// ordering of the items.
 		        bool operator<(Node) const { return false; }
 		      };
 		      /// This iterator goes through each node.
 		      /// This iterator goes through each node.
 		      /// Its usage is quite simple, for example you can count the number
 		      /// of nodes in graph \c g of type \c Graph like this:
 		      ///\code
 		      /// int count=0;
 		      /// for (Graph::NodeIt n(g); n!=INVALID; ++n) ++count;
 		      ///\endcode
 		      class NodeIt : public Node {
 		      public:
 		        /// Default constructor
 		        /// @warning The default constructor sets the iterator
 		        /// to an undefined value.
 		        NodeIt() { }
 		        /// Copy constructor.
 		        /// Copy constructor.
 		        ///
 		        NodeIt(const NodeIt& n) : Node(n) { }
 		        /// Invalid constructor \& conversion.
 		        /// Initialize the iterator to be invalid.
 		        /// \sa Invalid for more details.
 		        NodeIt(Invalid) { }
 		        /// Sets the iterator to the first node.
 		        /// Sets the iterator to the first node of \c g.

lemon/concepts/graph_components.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.
+		 *
 		 */
 		///\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
 		    ///
 		    /// This class describes the interface of Node and Arc (and Edge
 		    /// in undirected graphs) subtypes of graph types.
 		    ///
 		    /// \note This class is a template class so that we can use it to
 		    /// create graph skeleton classes. The reason for this is than Node
 		    /// and Arc types should \em not derive from the same base class.
 		    /// For Node you should instantiate it with character 'n' and for Arc
 		    /// with 'a'.
 		#ifndef DOXYGEN
 		    template <char _selector = '0'>
 		#endif
 		    class GraphItem {
 		    public:
 		      /// \brief Default constructor.
 		      ///
 		      /// \warning The default constructor is not required to set
 		      /// the item to some well-defined value. So you should consider it
 		      /// as uninitialized.
 		      GraphItem() {}
 		      /// \brief Copy constructor.
 		      ///
 		      /// Copy constructor.
 		      ///
 		      GraphItem(const GraphItem &) {}
 		      /// \brief Invalid constructor \& conversion.
 		      ///
 		      /// This constructor initializes the item to be invalid.
 		      /// \sa Invalid for more details.
 		      GraphItem(Invalid) {}
 		      /// \brief Assign operator for nodes.
 		      ///
 		      /// The nodes are assignable.
 		      ///
 		      GraphItem& operator=(GraphItem const&) { return *this; }
 		      /// \brief Equality operator.
 		      ///
 		      /// Two iterators are equal if and only if they represents the
 		      /// same node in the graph or both are invalid.
 		      bool operator==(GraphItem) const { return false; }
 		      /// \brief Inequality operator.
 		      ///
 		      /// \sa operator==(const Node& n)
 		      ///
 		      bool operator!=(GraphItem) const { return false; }
 		      /// \brief Artificial ordering operator.
 		      ///
 		      /// To allow the use of graph descriptors as key type in std::map or
 		      /// similar associative container we require this.
 		      ///
 		      /// \note This operator only have to define some strict ordering of
 		      /// the items; this order has nothing to do with the iteration
 		      /// ordering of the items.
 		      bool operator<(GraphItem) const { return false; }
 		      template<typename _GraphItem>
 		      struct Constraints {
 		        void constraints() {
 		          _GraphItem i1;
 		          _GraphItem i2 = i1;
 		          _GraphItem i3 = INVALID;
 		          i1 = i2 = i3;
 		          bool b;
 		          //          b = (ia == ib) && (ia != ib) && (ia < ib);
 		          b = (ia == ib) && (ia != ib);
 		          b = (ia == INVALID) && (ib != INVALID);
 		          b = (ia < ib);
+		        }
 		        const _GraphItem &ia;
 		        const _GraphItem &ib;
 		      };
 		    };
 		    /// \brief An empty base directed graph class.
 		    ///
 		    /// This class provides the minimal set of features needed for a
 		    /// directed graph structure. All digraph concepts have to be
 		    /// conform to this base directed graph. It just provides types
 		    /// for nodes and arcs and functions to get the source and the
 		    /// target of the arcs.
 		    class BaseDigraphComponent {
 		    public:
 		      typedef BaseDigraphComponent Digraph;
 		      /// \brief Node class of the digraph.
 		      ///
 		      /// This class represents the Nodes of the digraph.
 		      ///
 		      typedef GraphItem<'n'> Node;
 		      /// \brief Arc class of the digraph.
 		      ///
 		      /// This class represents the Arcs of the digraph.
 		      ///
 		      typedef GraphItem<'e'> Arc;
 		      /// \brief Gives back the target node of an arc.
 		      ///
 		      /// Gives back the target node of an arc.
 		      ///
 		      Node target(const Arc&) const { return INVALID;}
 		      /// \brief Gives back the source node of an arc.
 		      ///
 		      /// Gives back the source node of an arc.
 		      ///
 		      Node source(const Arc&) const { return INVALID;}
 		      /// \brief Gives back the opposite node on the given arc.
 		      ///
 		      /// Gives back the opposite node on the given arc.
 		      Node oppositeNode(const Node&, const Arc&) const {
 		        return INVALID;
+		      }

lemon/concepts/heap.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.
+		 *
 		 */
 		///\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
 		    /// @{
 		    /// \brief The heap concept.
 		    ///
 		    /// Concept class describing the main interface of heaps.
 		    template <typename Priority, typename ItemIntMap>
 		    class Heap {
 		    public:
 		      /// Type of the items stored in the heap.
 		      typedef typename ItemIntMap::Key Item;
 		      /// Type of the priorities.
 		      typedef Priority Prio;
 		      /// \brief Type to represent the states of the items.
 		      ///
 		      /// Each item has a state associated to it. It can be "in heap",
 		      /// "pre heap" or "post heap". The later two are indifferent
 		      /// from the point of view of the heap, but may be useful for
 		      /// the user.
 		      ///
 		      /// The \c ItemIntMap must be initialized in such a way, that it
 		      /// assigns \c PRE_HEAP (<tt>-1</tt>) to every item.
 		      enum State {
 		        IN_HEAP = 0,
 		        PRE_HEAP = -1,
 		        POST_HEAP = -2
 		      };
 		      /// \brief The constructor.
 		      ///
 		      /// The constructor.
 		      /// \param map A map that assigns \c int values to keys of type
 		      /// \c Item. It is used internally by the heap implementations to
 		      /// handle the cross references. The assigned value must be
 		      /// \c PRE_HEAP (<tt>-1</tt>) for every item.
 		      explicit Heap(ItemIntMap &map) {}
 		      /// \brief The number of items stored in the heap.
 		      ///
 		      /// Returns the number of items stored in the heap.
 		      int size() const { return 0; }
 		      /// \brief Checks if the heap is empty.
 		      ///
 		      /// Returns \c true if the heap is empty.
 		      bool empty() const { return false; }
 		      /// \brief Makes the heap empty.
 		      ///
 		      /// Makes the heap empty.
 		      void clear();
 		      /// \brief Inserts an item into the heap with the given priority.
 		      ///
 		      /// Inserts the given item into the heap with the given priority.
 		      /// \param i The item to insert.
 		      /// \param p The priority of the item.
 		      void push(const Item &i, const Prio &p) {}
 		      /// \brief Returns the item having minimum priority.
 		      ///
 		      /// Returns the item having minimum priority.
 		      /// \pre The heap must be non-empty.
 		      Item top() const {}
 		      /// \brief The minimum priority.
 		      ///
 		      /// Returns the minimum priority.
 		      /// \pre The heap must be non-empty.
 		      Prio prio() const {}
 		      /// \brief Removes the item having minimum priority.
 		      ///
 		      /// Removes the item having minimum priority.
 		      /// \pre The heap must be non-empty.
 		      void pop() {}
 		      /// \brief Removes an item from the heap.
 		      ///
 		      /// Removes the given item from the heap if it is already stored.
 		      /// \param i The item to delete.
 		      void erase(const Item &i) {}
 		      /// \brief The priority of an item.
 		      ///
 		      /// Returns the priority of the given item.
 		      /// \pre \c i must be in the heap.
 		      /// \param i The item.
 		      Prio operator[](const Item &i) const {}
 		      /// \brief Sets the priority of an item or inserts it, if it is
 		      /// not stored in the heap.
 		      ///
 		      /// This method sets the priority of the given item if it is
 		      /// already stored in the heap.
 		      /// Otherwise it inserts the given item with the given priority.
 		      ///
 		      /// It may throw an \ref UnderflowPriorityException.
 		      /// \param i The item.
 		      /// \param p The priority.
 		      void set(const Item &i, const Prio &p) {}
 		      /// \brief Decreases the priority of an item to the given value.
 		      ///
 		      /// Decreases the priority of an item to the given value.
 		      /// \pre \c i must be stored in the heap with priority at least \c p.
 		      /// \param i The item.
 		      /// \param p The priority.
 		      void decrease(const Item &i, const Prio &p) {}
 		      /// \brief Increases the priority of an item to the given value.
 		      ///
 		      /// Increases the priority of an item to the given value.
 		      /// \pre \c i must be stored in the heap with priority at most \c p.
 		      /// \param i The item.
 		      /// \param p The priority.
 		      void increase(const Item &i, const Prio &p) {}
 		      /// \brief Returns if an item is in, has already been in, or has
 		      /// never been in the heap.

lemon/concepts/maps.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_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 {
 		  namespace concepts {
 		    /// \addtogroup concept
 		    /// @{
 		    /// Readable map concept
 		    /// Readable map concept.
 		    ///
 		    template<typename K, typename T>
 		    class ReadMap
+		    {
 		    public:
 		      /// The key type of the map.
 		      typedef K Key;
 		      /// \brief The value type of the map.
 		      /// (The type of objects associated with the keys).
 		      typedef T Value;
 		      /// Returns the value associated with the given key.
 		      Value operator[](const Key &) const {
 		        return *static_cast<Value *>(0);
+		      }
 		      template<typename _ReadMap>
 		      struct Constraints {
 		        void constraints() {
 		          Value val = m[key];
 		          val = m[key];
 		          typename _ReadMap::Value own_val = m[own_key];
 		          own_val = m[own_key];
 		          ignore_unused_variable_warning(key);
 		          ignore_unused_variable_warning(val);
 		          ignore_unused_variable_warning(own_key);
 		          ignore_unused_variable_warning(own_val);
+		        }
 		        const Key& key;
 		        const typename _ReadMap::Key& own_key;
 		        const _ReadMap& m;
 		      };
 		    };
 		    /// Writable map concept
 		    /// Writable map concept.
 		    ///
 		    template<typename K, typename T>
 		    class WriteMap
+		    {
 		    public:
 		      /// The key type of the map.
 		      typedef K Key;
 		      /// \brief The value type of the map.
 		      /// (The type of objects associated with the keys).
 		      typedef T Value;
 		      /// Sets the value associated with the given key.
 		      void set(const Key &, const Value &) {}
 		      /// Default constructor.
 		      WriteMap() {}
 		      template <typename _WriteMap>
 		      struct Constraints {
 		        void constraints() {
 		          m.set(key, val);
 		          m.set(own_key, own_val);
 		          ignore_unused_variable_warning(key);
 		          ignore_unused_variable_warning(val);
 		          ignore_unused_variable_warning(own_key);
 		          ignore_unused_variable_warning(own_val);
+		        }
 		        const Key& key;
 		        const Value& val;
 		        const typename _WriteMap::Key& own_key;
 		        const typename _WriteMap::Value& own_val;
 		        _WriteMap& m;
 		      };
 		    };
 		    /// Read/writable map concept
 		    /// Read/writable map concept.
 		    ///
 		    template<typename K, typename T>
 		    class ReadWriteMap : public ReadMap<K,T>,
 		                         public WriteMap<K,T>
+		    {
 		    public:
 		      /// The key type of the map.
 		      typedef K Key;
 		      /// \brief The value type of the map.
 		      /// (The type of objects associated with the keys).
 		      typedef T Value;
 		      /// Returns the value associated with the given key.
 		      Value operator[](const Key &) const {
 		        return *static_cast<Value *>(0);
+		      }
 		      /// Sets the value associated with the given key.
 		      void set(const Key &, const Value &) {}
 		      template<typename _ReadWriteMap>
 		      struct Constraints {
 		        void constraints() {
 		          checkConcept<ReadMap<K, T>, _ReadWriteMap >();
 		          checkConcept<WriteMap<K, T>, _ReadWriteMap >();
+		        }
 		      };
 		    };
 		    /// Dereferable map concept
 		    /// Dereferable map concept.

lemon/concepts/path.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.
+		 *
 		 */
 		///\ingroup concept
 		///\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
 		    /// @{
 		    /// \brief A skeleton structure for representing directed paths in
 		    /// a digraph.
 		    ///
 		    /// A skeleton structure for representing directed paths in a
 		    /// digraph.
 		    /// \tparam _Digraph The digraph type in which the path is.
 		    ///
 		    /// In a sense, the path can be treated as a list of arcs. The
 		    /// lemon path type stores just this list. As a consequence it
 		    /// cannot enumerate the nodes in the path and the zero length
 		    /// paths cannot store the source.
 		    ///
 		    template <typename _Digraph>
 		    class Path {
 		    public:
 		      /// Type of the underlying digraph.
 		      typedef _Digraph Digraph;
 		      /// Arc type of the underlying digraph.
 		      typedef typename Digraph::Arc Arc;
 		      class ArcIt;
 		      /// \brief Default constructor
 		      Path() {}
 		      /// \brief Template constructor
 		      template <typename CPath>
 		      Path(const CPath& cpath) {}
 		      /// \brief Template assigment
 		      template <typename CPath>
 		      Path& operator=(const CPath& cpath) {}
 		      /// Length of the path ie. the number of arcs in the path.
 		      int length() const { return 0;}
 		      /// Returns whether the path is empty.
 		      bool empty() const { return true;}
 		      /// Resets the path to an empty path.
 		      void clear() {}
 		      /// \brief Lemon style iterator for path arcs
 		      ///
 		      /// This class is used to iterate on the arcs of the paths.
 		      class ArcIt {
 		      public:
 		        /// Default constructor
 		        ArcIt() {}
 		        /// Invalid constructor
 		        ArcIt(Invalid) {}
 		        /// Constructor for first arc
 		        ArcIt(const Path &) {}
 		        /// Conversion to Arc
 		        operator Arc() const { return INVALID; }
 		        /// Next arc
 		        ArcIt& operator++() {return *this;}
 		        /// Comparison operator
 		        bool operator==(const ArcIt&) const {return true;}
 		        /// Comparison operator
 		        bool operator!=(const ArcIt&) const {return true;}
 		        /// Comparison operator
 		        bool operator<(const ArcIt&) const {return false;}
 		      };
 		      template <typename _Path>
 		      struct Constraints {
 		        void constraints() {
 		          Path<Digraph> pc;
 		          _Path p, pp(pc);
 		          int l = p.length();
 		          int e = p.empty();
 		          p.clear();
 		          p = pc;
 		          typename _Path::ArcIt id, ii(INVALID), i(p);
 		          ++i;
 		          typename Digraph::Arc ed = i;
 		          e = (i == ii);
 		          e = (i != ii);
 		          e = (i < ii);
 		          ignore_unused_variable_warning(l);
 		          ignore_unused_variable_warning(pp);
 		          ignore_unused_variable_warning(e);
 		          ignore_unused_variable_warning(id);
 		          ignore_unused_variable_warning(ii);
 		          ignore_unused_variable_warning(ed);
+		        }
 		      };
 		    };
 		    namespace _path_bits {
 		      template <typename _Digraph, typename _Path, typename RevPathTag = void>
 		      struct PathDumperConstraints {
 		        void constraints() {
 		          int l = p.length();
 		          int e = p.empty();
 		          typename _Path::ArcIt id, i(p);
 		          ++i;
 		          typename _Digraph::Arc ed = i;
 		          e = (i == INVALID);
 		          e = (i != INVALID);
 		          ignore_unused_variable_warning(l);
 		          ignore_unused_variable_warning(e);
 		          ignore_unused_variable_warning(id);

lemon/dfs.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_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 {
 		  ///Default traits class of Dfs class.
 		  ///Default traits class of Dfs class.
 		  ///\tparam GR Digraph type.
 		  template<class GR>
 		  struct DfsDefaultTraits
+		  {
 		    ///The digraph type the algorithm runs on.
 		    typedef GR Digraph;
 		    ///\brief The type of the map that stores the last
 		    ///arcs of the %DFS paths.
 		    ///
 		    ///The type of the map that stores the last
 		    ///arcs of the %DFS paths.
 		    ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
 		    ///
 		    typedef typename Digraph::template NodeMap<typename GR::Arc> PredMap;
 		    ///Instantiates a PredMap.
 		    ///This function instantiates a \ref PredMap.
 		    ///\param G is the digraph, to which we would like to define the PredMap.
 		    ///\todo The digraph alone may be insufficient to initialize
 		    static PredMap *createPredMap(const GR &G)
+		    {
 		      return new PredMap(G);
+		    }
 		    ///The type of the map that indicates which nodes are processed.
 		    ///The type of the map that indicates which nodes are processed.
 		    ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
 		    ///\todo named parameter to set this type, function to read and write.
 		    typedef NullMap<typename Digraph::Node,bool> ProcessedMap;
 		    ///Instantiates a ProcessedMap.
 		    ///This function instantiates a \ref ProcessedMap.
 		    ///\param g is the digraph, to which
 		    ///we would like to define the \ref ProcessedMap
 		#ifdef DOXYGEN
 		    static ProcessedMap *createProcessedMap(const GR &g)
 		#else
 		    static ProcessedMap *createProcessedMap(const GR &)
 		#endif
+		    {
 		      return new ProcessedMap();
+		    }
 		    ///The type of the map that indicates which nodes are reached.
 		    ///The type of the map that indicates which nodes are reached.
 		    ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
 		    ///\todo named parameter to set this type, function to read and write.
 		    typedef typename Digraph::template NodeMap<bool> ReachedMap;
 		    ///Instantiates a ReachedMap.
 		    ///This function instantiates a \ref ReachedMap.
 		    ///\param G is the digraph, to which
 		    ///we would like to define the \ref ReachedMap.
 		    static ReachedMap *createReachedMap(const GR &G)
+		    {
 		      return new ReachedMap(G);
+		    }
 		    ///The type of the map that stores the dists of the nodes.
 		    ///The type of the map that stores the dists of the nodes.
 		    ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
 		    ///
 		    typedef typename Digraph::template NodeMap<int> DistMap;
 		    ///Instantiates a DistMap.
 		    ///This function instantiates a \ref DistMap.
 		    ///\param G is the digraph, to which we would like to define
 		    ///the \ref DistMap
 		    static DistMap *createDistMap(const GR &G)
+		    {
 		      return new DistMap(G);
+		    }
 		  };
 		  ///%DFS algorithm class.
 		  ///\ingroup search
 		  ///This class provides an efficient implementation of the %DFS algorithm.
 		  ///
 		  ///\tparam GR The digraph type the algorithm runs on. The default value is
 		  ///\ref ListDigraph. The value of GR is not used directly by Dfs, it
 		  ///is only passed to \ref DfsDefaultTraits.
 		  ///\tparam TR Traits class to set various data types used by the algorithm.
 		  ///The default traits class is
 		  ///\ref DfsDefaultTraits "DfsDefaultTraits<GR>".
 		  ///See \ref DfsDefaultTraits for the documentation of
 		  ///a Dfs traits class.
 		#ifdef DOXYGEN
 		  template <typename GR,
 		            typename TR>
 		#else
 		  template <typename GR=ListDigraph,
 		            typename TR=DfsDefaultTraits<GR> >
 		#endif
 		  class Dfs {
 		  public:
 		    /**
 		     * \brief \ref Exception for uninitialized parameters.
+		     *
 		     * This error represents problems in the initialization
 		     * of the parameters of the algorithms.
 		     */
 		    class UninitializedParameter : public lemon::UninitializedParameter {
 		    public:
 		      virtual const char* what() const throw() {
 		        return "lemon::Dfs::UninitializedParameter";
+		      }
 		    };
 		    typedef TR Traits;
 		    ///The type of the underlying digraph.
 		    typedef typename TR::Digraph Digraph;
 		    ///\e
 		    typedef typename Digraph::Node Node;
 		    ///\e
 		    typedef typename Digraph::NodeIt NodeIt;

lemon/dijkstra.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_DIJKSTRA_H
 		#define LEMON_DIJKSTRA_H
 		///\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
 		  /// used in the Dijkstra algorithm.
 		  template <typename Value>
 		  struct DijkstraDefaultOperationTraits {
 		    /// \brief Gives back the zero value of the type.
 		    static Value zero() {
 		      return static_cast<Value>(0);
+		    }
 		    /// \brief Gives back the sum of the given two elements.
 		    static Value plus(const Value& left, const Value& right) {
 		      return left + right;
+		    }
 		    /// \brief Gives back true only if the first value less than the second.
 		    static bool less(const Value& left, const Value& right) {
 		      return left < right;
+		    }
 		  };
 		  /// \brief Widest path OperationTraits for the Dijkstra algorithm class.
 		  ///
 		  /// It defines all computational operations and constants which are
 		  /// used in the Dijkstra algorithm for widest path computation.
 		  template <typename Value>
 		  struct DijkstraWidestPathOperationTraits {
 		    /// \brief Gives back the maximum value of the type.
 		    static Value zero() {
 		      return std::numeric_limits<Value>::max();
+		    }
 		    /// \brief Gives back the minimum of the given two elements.
 		    static Value plus(const Value& left, const Value& right) {
 		      return std::min(left, right);
+		    }
 		    /// \brief Gives back true only if the first value less than the second.
 		    static bool less(const Value& left, const Value& right) {
 		      return left < right;
+		    }
 		  };
 		  ///Default traits class of Dijkstra class.
 		  ///Default traits class of Dijkstra class.
 		  ///\tparam GR Digraph type.
 		  ///\tparam LM Type of length map.
 		  template<class GR, class LM>
 		  struct DijkstraDefaultTraits
+		  {
 		    ///The digraph type the algorithm runs on.
 		    typedef GR Digraph;
 		    ///The type of the map that stores the arc lengths.
 		    ///The type of the map that stores the arc lengths.
 		    ///It must meet the \ref concepts::ReadMap "ReadMap" concept.
 		    typedef LM LengthMap;
 		    //The type of the length of the arcs.
 		    typedef typename LM::Value Value;
 		    /// Operation traits for Dijkstra algorithm.
 		    /// It defines the used operation by the algorithm.
 		    /// \see DijkstraDefaultOperationTraits
 		    typedef DijkstraDefaultOperationTraits<Value> OperationTraits;
 		    /// The cross reference type used by heap.
 		    /// The cross reference type used by heap.
 		    /// Usually it is \c Digraph::NodeMap<int>.
 		    typedef typename Digraph::template NodeMap<int> HeapCrossRef;
 		    ///Instantiates a HeapCrossRef.
 		    ///This function instantiates a \c HeapCrossRef.
 		    /// \param G is the digraph, to which we would like to define the
 		    /// HeapCrossRef.
 		    static HeapCrossRef *createHeapCrossRef(const GR &G)
+		    {
 		      return new HeapCrossRef(G);
+		    }
 		    ///The heap type used by Dijkstra algorithm.
 		    ///The heap type used by Dijkstra algorithm.
 		    ///
 		    ///\sa BinHeap
 		    ///\sa Dijkstra
 		    typedef BinHeap<typename LM::Value, HeapCrossRef, std::less<Value> > Heap;
 		    static Heap *createHeap(HeapCrossRef& R)
+		    {
 		      return new Heap(R);
+		    }
 		    ///\brief The type of the map that stores the last
 		    ///arcs of the shortest paths.
 		    ///
 		    ///The type of the map that stores the last
 		    ///arcs of the shortest paths.
 		    ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
 		    ///
 		    typedef typename Digraph::template NodeMap<typename GR::Arc> PredMap;
 		    ///Instantiates a PredMap.
 		    ///This function instantiates a \c PredMap.
 		    ///\param G is the digraph, to which we would like to define the PredMap.
 		    ///\todo The digraph alone may be insufficient for the initialization
 		    static PredMap *createPredMap(const GR &G)
+		    {
 		      return new PredMap(G);
+		    }
 		    ///The type of the map that stores whether a nodes is processed.
 		    ///The type of the map that stores whether a nodes is processed.
 		    ///It must meet the \ref concepts::WriteMap "WriteMap" concept.
 		    ///By default it is a NullMap.
 		    ///\todo If it is set to a real map,
 		    ///Dijkstra::processed() should read this.
 		    ///\todo named parameter to set this type, function to read and write.
 		    typedef NullMap<typename Digraph::Node,bool> ProcessedMap;
 		    ///Instantiates a ProcessedMap.
 		    ///This function instantiates a \c ProcessedMap.
 		    ///\param g is the digraph, to which
 		    ///we would like to define the \c ProcessedMap

lemon/dim2.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_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.
 		///
 		/// The class \ref lemon::dim2::BoundingBox "dim2::BoundingBox"
 		/// can be used to determine
 		/// the rectangular bounding box of a set of
 		/// \ref lemon::dim2::Point "dim2::Point"'s.
 		namespace lemon {
 		  ///Tools for handling two dimensional coordinates
 		  ///This namespace is a storage of several
 		  ///tools for handling two dimensional coordinates
 		  namespace dim2 {
 		  /// \addtogroup misc
 		  /// @{
 		  /// A simple two dimensional vector (plainvector) implementation
 		  /// A simple two dimensional vector (plainvector) implementation
 		  /// with the usual vector operations.
 		  template<typename T>
 		    class Point {
 		    public:
 		      typedef T Value;
 		      ///First coordinate
 		      T x;
 		      ///Second coordinate
 		      T y;
 		      ///Default constructor
 		      Point() {}
 		      ///Construct an instance from coordinates
 		      Point(T a, T b) : x(a), y(b) { }
 		      ///Returns the dimension of the vector (i.e. returns 2).
 		      ///The dimension of the vector.
 		      ///This function always returns 2.
 		      int size() const { return 2; }
 		      ///Subscripting operator
 		      ///\c p[0] is \c p.x and \c p[1] is \c p.y
 		      ///
 		      T& operator[](int idx) { return idx == 0 ? x : y; }
 		      ///Const subscripting operator
 		      ///\c p[0] is \c p.x and \c p[1] is \c p.y
 		      ///
 		      const T& operator[](int idx) const { return idx == 0 ? x : y; }
 		      ///Conversion constructor
 		      template<class TT> Point(const Point<TT> &p) : x(p.x), y(p.y) {}
 		      ///Give back the square of the norm of the vector
 		      T normSquare() const {
 		        return x*x+y*y;
+		      }
 		      ///Increment the left hand side by \c u
 		      Point<T>& operator +=(const Point<T>& u) {
 		        x += u.x;
 		        y += u.y;
 		        return *this;
+		      }
 		      ///Decrement the left hand side by \c u
 		      Point<T>& operator -=(const Point<T>& u) {
 		        x -= u.x;
 		        y -= u.y;
 		        return *this;
+		      }
 		      ///Multiply the left hand side with a scalar
 		      Point<T>& operator *=(const T &u) {
 		        x *= u;
 		        y *= u;
 		        return *this;
+		      }
 		      ///Divide the left hand side by a scalar
 		      Point<T>& operator /=(const T &u) {
 		        x /= u;
 		        y /= u;
 		        return *this;
+		      }
 		      ///Return the scalar product of two vectors
 		      T operator *(const Point<T>& u) const {
 		        return x*u.x+y*u.y;
+		      }
 		      ///Return the sum of two vectors
 		      Point<T> operator+(const Point<T> &u) const {
 		        Point<T> b=*this;
 		        return b+=u;
+		      }
 		      ///Return the negative of the vector
 		      Point<T> operator-() const {
 		        Point<T> b=*this;
 		        b.x=-b.x; b.y=-b.y;
 		        return b;
+		      }
 		      ///Return the difference of two vectors
 		      Point<T> operator-(const Point<T> &u) const {
 		        Point<T> b=*this;
 		        return b-=u;
+		      }
 		      ///Return a vector multiplied by a scalar
 		      Point<T> operator*(const T &u) const {
 		        Point<T> b=*this;
 		        return b*=u;

lemon/graph_to_eps.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_TO_EPS_H
 		#define LEMON_GRAPH_TO_EPS_H
 		#include<iostream>
 		#include<fstream>
 		#include<sstream>
 		#include<algorithm>
 		#include<vector>
 		#ifndef WIN32
 		#include<sys/time.h>
 		#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
 		///\brief A well configurable tool for visualizing graphs
 		namespace lemon {
 		  namespace _graph_to_eps_bits {
 		    template<class MT>
 		    class _NegY {
 		    public:
 		      typedef typename MT::Key Key;
 		      typedef typename MT::Value Value;
 		      const MT &map;
 		      int yscale;
 		      _NegY(const MT &m,bool b) : map(m), yscale(1-b*2) {}
 		      Value operator[](Key n) { return Value(map[n].x,map[n].y*yscale);}
 		    };
+		  }
 		///Default traits class of \ref GraphToEps
 		///Default traits class of \ref GraphToEps.
 		///
 		///\c G is the type of the underlying graph.
 		template<class G>
 		struct DefaultGraphToEpsTraits
+		{
 		  typedef G Graph;
 		  typedef typename Graph::Node Node;
 		  typedef typename Graph::NodeIt NodeIt;
 		  typedef typename Graph::Arc Arc;
 		  typedef typename Graph::ArcIt ArcIt;
 		  typedef typename Graph::InArcIt InArcIt;
 		  typedef typename Graph::OutArcIt OutArcIt;
 		  const Graph &g;
 		  std::ostream& os;
 		  typedef ConstMap<typename Graph::Node,dim2::Point<double> > CoordsMapType;
 		  CoordsMapType _coords;
 		  ConstMap<typename Graph::Node,double > _nodeSizes;
 		  ConstMap<typename Graph::Node,int > _nodeShapes;
 		  ConstMap<typename Graph::Node,Color > _nodeColors;
 		  ConstMap<typename Graph::Arc,Color > _arcColors;
 		  ConstMap<typename Graph::Arc,double > _arcWidths;
 		  double _arcWidthScale;
 		  double _nodeScale;
 		  double _xBorder, _yBorder;
 		  double _scale;
 		  double _nodeBorderQuotient;
 		  bool _drawArrows;
 		  double _arrowLength, _arrowWidth;
 		  bool _showNodes, _showArcs;
 		  bool _enableParallel;
 		  double _parArcDist;
 		  bool _showNodeText;
 		  ConstMap<typename Graph::Node,bool > _nodeTexts;
 		  double _nodeTextSize;
 		  bool _showNodePsText;
 		  ConstMap<typename Graph::Node,bool > _nodePsTexts;
 		  char *_nodePsTextsPreamble;
 		  bool _undirected;
 		  bool _pleaseRemoveOsStream;
 		  bool _scaleToA4;
 		  std::string _title;
 		  std::string _copyright;
 		  enum NodeTextColorType
 		    { DIST_COL=0, DIST_BW=1, CUST_COL=2, SAME_COL=3 } _nodeTextColorType;
 		  ConstMap<typename Graph::Node,Color > _nodeTextColors;
 		  bool _autoNodeScale;
 		  bool _autoArcWidthScale;
 		  bool _absoluteNodeSizes;
 		  bool _absoluteArcWidths;
 		  bool _negY;
 		  bool _preScale;
 		  ///Constructor
 		  ///Constructor
 		  ///\param _g  Reference to the graph to be printed.
 		  ///\param _os Reference to the output stream.
 		  ///\param _os Reference to the output stream.
 		  ///By default it is <tt>std::cout</tt>.
 		  ///\param _pros If it is \c true, then the \c ostream referenced by \c _os
 		  ///will be explicitly deallocated by the destructor.
 		  DefaultGraphToEpsTraits(const G &_g,std::ostream& _os=std::cout,
 		                          bool _pros=false) :
 		    g(_g), os(_os),
 		    _coords(dim2::Point<double>(1,1)), _nodeSizes(1), _nodeShapes(0),
 		    _nodeColors(WHITE), _arcColors(BLACK),
 		    _arcWidths(1.0), _arcWidthScale(0.003),
 		    _nodeScale(.01), _xBorder(10), _yBorder(10), _scale(1.0),
 		    _nodeBorderQuotient(.1),
 		    _drawArrows(false), _arrowLength(1), _arrowWidth(0.3),
 		    _showNodes(true), _showArcs(true),
 		    _enableParallel(false), _parArcDist(1),
 		    _showNodeText(false), _nodeTexts(false), _nodeTextSize(1),
 		    _showNodePsText(false), _nodePsTexts(false), _nodePsTextsPreamble(0),
 		    _undirected(lemon::UndirectedTagIndicator<G>::value),
 		    _pleaseRemoveOsStream(_pros), _scaleToA4(false),
 		    _nodeTextColorType(SAME_COL), _nodeTextColors(BLACK),
 		    _autoNodeScale(false),
 		    _autoArcWidthScale(false),

lemon/kruskal.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_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.
 		///
 		namespace lemon {
 		  namespace _kruskal_bits {
 		    // Kruskal for directed graphs.
 		    template <typename Digraph, typename In, typename Out>
 		    typename disable_if<lemon::UndirectedTagIndicator<Digraph>,
 		                       typename In::value_type::second_type >::type
 		    kruskal(const Digraph& digraph, const In& in, Out& out,dummy<0> = 0) {
 		      typedef typename In::value_type::second_type Value;
 		      typedef typename Digraph::template NodeMap<int> IndexMap;
 		      typedef typename Digraph::Node Node;
 		      IndexMap index(digraph);
 		      UnionFind<IndexMap> uf(index);
 		      for (typename Digraph::NodeIt it(digraph); it != INVALID; ++it) {
 		        uf.insert(it);
+		      }
 		      Value tree_value = 0;
 		      for (typename In::const_iterator it = in.begin(); it != in.end(); ++it) {
 		        if (uf.join(digraph.target(it->first),digraph.source(it->first))) {
 		          out.set(it->first, true);
 		          tree_value += it->second;
+		        }
 		        else {
 		          out.set(it->first, false);
+		        }
+		      }
 		      return tree_value;
+		    }
 		    // Kruskal for undirected graphs.
 		    template <typename Graph, typename In, typename Out>
 		    typename enable_if<lemon::UndirectedTagIndicator<Graph>,
 		                       typename In::value_type::second_type >::type
 		    kruskal(const Graph& graph, const In& in, Out& out,dummy<1> = 1) {
 		      typedef typename In::value_type::second_type Value;
 		      typedef typename Graph::template NodeMap<int> IndexMap;
 		      typedef typename Graph::Node Node;
 		      IndexMap index(graph);
 		      UnionFind<IndexMap> uf(index);
 		      for (typename Graph::NodeIt it(graph); it != INVALID; ++it) {
 		        uf.insert(it);
+		      }
 		      Value tree_value = 0;
 		      for (typename In::const_iterator it = in.begin(); it != in.end(); ++it) {
 		        if (uf.join(graph.u(it->first),graph.v(it->first))) {
 		          out.set(it->first, true);
 		          tree_value += it->second;
+		        }
 		        else {
 		          out.set(it->first, false);
+		        }
+		      }
 		      return tree_value;
+		    }
 		    template <typename Sequence>
 		    struct PairComp {
 		      typedef typename Sequence::value_type Value;
 		      bool operator()(const Value& left, const Value& right) {
 		        return left.second < right.second;
+		      }
 		    };
 		    template <typename In, typename Enable = void>
 		    struct SequenceInputIndicator {
 		      static const bool value = false;
 		    };
 		    template <typename In>
 		    struct SequenceInputIndicator<In,
 		      typename exists<typename In::value_type::first_type>::type> {
 		      static const bool value = true;
 		    };
 		    template <typename In, typename Enable = void>
 		    struct MapInputIndicator {
 		      static const bool value = false;
 		    };
 		    template <typename In>
 		    struct MapInputIndicator<In,
 		      typename exists<typename In::Value>::type> {
 		      static const bool value = true;
 		    };
 		    template <typename In, typename Enable = void>
 		    struct SequenceOutputIndicator {
 		      static const bool value = false;
 		    };
 		    template <typename Out>
 		    struct SequenceOutputIndicator<Out,
 		      typename exists<typename Out::value_type>::type> {
 		      static const bool value = true;
 		    };
 		    template <typename Out, typename Enable = void>
 		    struct MapOutputIndicator {
 		      static const bool value = false;
 		    };
 		    template <typename Out>
 		    struct MapOutputIndicator<Out,
 		      typename exists<typename Out::Value>::type> {
 		      static const bool value = true;
 		    };
 		    template <typename In, typename InEnable = void>
 		    struct KruskalValueSelector {};
 		    template <typename In>
@@ -175,158 +172,158 @@
 		    template <typename Graph, typename In, typename Out,
 		              typename InEnable = void>
 		    struct KruskalOutputSelector {};
 		    template <typename Graph, typename In, typename Out>
 		    struct KruskalInputSelector<Graph, In, Out,
 		      typename enable_if<SequenceInputIndicator<In>, void>::type >
+		    {
 		      typedef typename In::value_type::second_type Value;
 		      static Value kruskal(const Graph& graph, const In& in, Out& out) {
 		        return KruskalOutputSelector<Graph, In, Out>::
 		          kruskal(graph, in, out);
+		      }
 		    };
 		    template <typename Graph, typename In, typename Out>
 		    struct KruskalInputSelector<Graph, In, Out,
 		      typename enable_if<MapInputIndicator<In>, void>::type >
+		    {
 		      typedef typename In::Value Value;
 		      static Value kruskal(const Graph& graph, const In& in, Out& out) {
 		        typedef typename In::Key MapArc;
 		        typedef typename In::Value Value;
 		        typedef typename ItemSetTraits<Graph, MapArc>::ItemIt MapArcIt;
 		        typedef std::vector<std::pair<MapArc, Value> > Sequence;
 		        Sequence seq;
 		        for (MapArcIt it(graph); it != INVALID; ++it) {
 		          seq.push_back(std::make_pair(it, in[it]));
+		        }
 		        std::sort(seq.begin(), seq.end(), PairComp<Sequence>());
 		        return KruskalOutputSelector<Graph, Sequence, Out>::
 		          kruskal(graph, seq, out);
+		      }
 		    };
 		    template <typename T>
 		    struct RemoveConst {
 		      typedef T type;
 		    };
 		    template <typename T>
 		    struct RemoveConst<const T> {
 		      typedef T type;
 		    };
 		    template <typename Graph, typename In, typename Out>
 		    struct KruskalOutputSelector<Graph, In, Out,
 		      typename enable_if<SequenceOutputIndicator<Out>, void>::type >
+		    {
 		      typedef typename In::value_type::second_type Value;
 		      static Value kruskal(const Graph& graph, const In& in, Out& out) {
 		        typedef LoggerBoolMap<typename RemoveConst<Out>::type> Map;
 		        Map map(out);
 		        return _kruskal_bits::kruskal(graph, in, map);
+		      }
 		    };
 		    template <typename Graph, typename In, typename Out>
 		    struct KruskalOutputSelector<Graph, In, Out,
 		      typename enable_if<MapOutputIndicator<Out>, void>::type >
+		    {
 		      typedef typename In::value_type::second_type Value;
 		      static Value kruskal(const Graph& graph, const In& in, Out& out) {
 		        return _kruskal_bits::kruskal(graph, in, out);
+		      }
 		    };
+		  }
 		  /// \ingroup spantree
 		  ///
 		  /// \brief Kruskal algorithm to find a minimum cost spanning tree of
 		  /// a graph.
 		  ///
 		  /// This function runs Kruskal's algorithm to find a minimum cost
 		  /// spanning tree.
 		  /// Due to some C++ hacking, it accepts various input and output types.
 		  ///
 		  /// \param g The graph the algorithm runs on.
 		  /// It can be either \ref concepts::Digraph "directed" or
 		  /// \ref concepts::Graph "undirected".
 		  /// If the graph is directed, the algorithm consider it to be
 		  /// undirected by disregarding the direction of the arcs.
 		  ///
 		  /// \param in This object is used to describe the arc/edge costs.
 		  /// It can be one of the following choices.
 		  /// - An STL compatible 'Forward Container' with
 		  /// <tt>std::pair<GR::Arc,X></tt> or
 		  /// <tt>std::pair<GR::Edge,X></tt> as its <tt>value_type</tt>, where
 		  /// \c X is the type of the costs. The pairs indicates the arcs/edges
 		  /// along with the assigned cost. <em>They must be in a
 		  /// cost-ascending order.</em>
 		  /// - Any readable arc/edge map. The values of the map indicate the
 		  /// arc/edge costs.
 		  ///
 		  /// \retval out Here we also have a choice.
 		  /// - It can be a writable \c bool arc/edge map. After running the
 		  /// algorithm it will contain the found minimum cost spanning
 		  /// tree: the value of an arc/edge will be set to \c true if it belongs
 		  /// to the tree, otherwise it will be set to \c false. The value of
 		  /// each arc/edge will be set exactly once.
 		  /// - It can also be an iteraror of an STL Container with
 		  /// <tt>GR::Arc</tt> or <tt>GR::Edge</tt> as its
 		  /// <tt>value_type</tt>.  The algorithm copies the elements of the
 		  /// found tree into this sequence.  For example, if we know that the
 		  /// spanning tree of the graph \c g has say 53 arcs, then we can
 		  /// put its arcs into an STL vector \c tree with a code like this.
 		  ///\code
 		  /// std::vector<Arc> tree(53);
 		  /// kruskal(g,cost,tree.begin());
 		  ///\endcode
 		  /// Or if we don't know in advance the size of the tree, we can
 		  /// write this.
 		  ///\code
 		  /// std::vector<Arc> tree;
 		  /// kruskal(g,cost,std::back_inserter(tree));
 		  ///\endcode
 		  ///
 		  /// \return The total cost of the found spanning tree.
 		  ///
-		  /// \note If the input graph is not (weakly) connected, a spanning
 		  /// \note If the input graph is not (weakly) connected, a spanning
 		  /// forest is calculated instead of a spanning tree.
 		#ifdef DOXYGEN
 		  template <class Graph, class In, class Out>
 		  Value kruskal(GR const& g, const In& in, Out& out)
 		#else
 		  template <class Graph, class In, class Out>
 		  inline typename _kruskal_bits::KruskalValueSelector<In>::Value
 		  kruskal(const Graph& graph, const In& in, Out& out)
 		#endif
+		  {
 		    return _kruskal_bits::KruskalInputSelector<Graph, In, Out>::
 		      kruskal(graph, in, out);
+		  }
 		  template <class Graph, class In, class Out>
 		  inline typename _kruskal_bits::KruskalValueSelector<In>::Value
 		  kruskal(const Graph& graph, const In& in, const Out& out)
+		  {
 		    return _kruskal_bits::KruskalInputSelector<Graph, In, const Out>::
 		      kruskal(graph, in, out);
+		  }
 		} //namespace lemon
 		#endif //LEMON_KRUSKAL_H

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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