File: labeled_graph.hpp

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// Copyright (C) 2009 Andrew Sutton

// 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)

#ifndef BOOST_GRAPH_LABELED_GRAPH_HPP
#define BOOST_GRAPH_LABELED_GRAPH_HPP

#include <boost/config.hpp>
#include <vector>
#include <map>

#include <boost/static_assert.hpp>
#include <boost/mpl/if.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/unordered_map.hpp>
#include <boost/type_traits/is_same.hpp>
#include <boost/type_traits/is_unsigned.hpp>
#include <boost/pending/container_traits.hpp>
#include <boost/graph/graph_traits.hpp>

// This file implements a utility for creating mappings from arbitrary
// identifiers to the vertices of a graph.

namespace boost {

// A type selector that denotes the use of some default value.
struct defaultS { };

/** @internal */
namespace graph_detail {
    /** Returns true if the selector is the default selector. */
    template <typename Selector>
    struct is_default
        : mpl::bool_<is_same<Selector, defaultS>::value>
    { };

    /**
     * Choose the default map instance. If Label is an unsigned integral type
     * the we can use a vector to store the information.
     */
    template <typename Label, typename Vertex>
    struct choose_default_map {
        typedef typename mpl::if_<
            is_unsigned<Label>,
            std::vector<Vertex>,
            std::map<Label, Vertex> // TODO: Should use unordered_map?
        >::type type;
    };

    /**
     * @name Generate Label Map
     * These type generators are responsible for instantiating an associative
     * container for the the labeled graph. Note that the Selector must be
     * select a pair associative container or a vecS, which is only valid if
     * Label is an integral type.
     */
    //@{
    template <typename Selector, typename Label, typename Vertex>
    struct generate_label_map { };

    template <typename Label, typename Vertex>
    struct generate_label_map<vecS, Label, Vertex>
    { typedef std::vector<Vertex> type; };

    template <typename Label, typename Vertex>
    struct generate_label_map<mapS, Label, Vertex>
    { typedef std::map<Label, Vertex> type; };

    template <typename Label, typename Vertex>
    struct generate_label_map<multimapS, Label, Vertex>
    { typedef std::multimap<Label, Vertex> type; };

    template <typename Label, typename Vertex>
    struct generate_label_map<hash_mapS, Label, Vertex>
    { typedef boost::unordered_map<Label, Vertex> type; };

    template <typename Label, typename Vertex>
    struct generate_label_map<hash_multimapS, Label, Vertex>
    { typedef boost::unordered_multimap<Label, Vertex> type; };

    template <typename Selector, typename Label, typename Vertex>
    struct choose_custom_map {
        typedef typename generate_label_map<Selector, Label, Vertex>::type type;
    };
    //@}

    /**
     * Choose and instantiate an "associative" container. Note that this can
     * also choose vector.
     */
    template <typename Selector, typename Label, typename Vertex>
    struct choose_map {
        typedef typename mpl::eval_if<
            is_default<Selector>,
            choose_default_map<Label, Vertex>,
            choose_custom_map<Selector, Label, Vertex>
        >::type type;
    };

    /** @name Insert Labeled Vertex */
    //@{
    // Tag dispatch on random access containers (i.e., vectors). This function
    // basically requires a) that Container is vector<Label> and that Label
    // is an unsigned integral value. Note that this will resize the vector
    // to accommodate indices.
    template <typename Container, typename Graph, typename Label, typename Prop>
    std::pair<typename graph_traits<Graph>::vertex_descriptor, bool>
    insert_labeled_vertex(Container& c, Graph& g, Label const& l, Prop const& p,
                          random_access_container_tag)
    {
        typedef typename graph_traits<Graph>::vertex_descriptor Vertex;

        // If the label is out of bounds, resize the vector to accommodate.
        // Resize by 2x the index so we don't cause quadratic insertions over
        // time.
        if(l >= c.size()) {
            c.resize((l + 1) * 2);
        }
        Vertex v = add_vertex(p, g);
        c[l] = v;
        return std::make_pair(c[l], true);
    }

    // Tag dispatch on multi associative containers (i.e. multimaps).
    template <typename Container, typename Graph, typename Label, typename Prop>
    std::pair<typename graph_traits<Graph>::vertex_descriptor, bool>
    insert_labeled_vertex(Container& c, Graph& g, Label const& l, Prop const& p,
                          multiple_associative_container_tag const&)
    {
        // Note that insertion always succeeds so we can add the vertex first
        // and then the mapping to the label.
        typedef typename graph_traits<Graph>::vertex_descriptor Vertex;
        Vertex v = add_vertex(p, g);
        c.insert(std::make_pair(l, v));
        return std::make_pair(v, true);
    }

    // Tag dispatch on unique associative containers (i.e. maps).
    template <typename Container, typename Graph, typename Label, typename Prop>
    std::pair<typename graph_traits<Graph>::vertex_descriptor, bool>
    insert_labeled_vertex(Container& c, Graph& g, Label const& l, Prop const& p,
                          unique_associative_container_tag)
    {
        // Here, we actually have to try the insertion first, and only add
        // the vertex if we get a new element.
        typedef typename graph_traits<Graph>::vertex_descriptor Vertex;
        typedef typename Container::iterator Iterator;
        std::pair<Iterator, bool> x = c.insert(std::make_pair(l, Vertex()));
        if(x.second) {
            x.first->second = add_vertex(g);
            put(boost::vertex_all, g, x.first->second, p);
        }
        return std::make_pair(x.first->second, x.second);
    }

    // Dispatcher
    template <typename Container, typename Graph, typename Label, typename Prop>
    std::pair<typename graph_traits<Graph>::vertex_descriptor, bool>
    insert_labeled_vertex(Container& c, Graph& g, Label const& l, Prop const& p)
    { return insert_labeled_vertex(c, g, l, p, container_category(c)); }
    //@}

    /** @name Find Labeled Vertex */
    //@{
    // Tag dispatch for sequential maps (i.e., vectors).
    template <typename Container, typename Graph, typename Label>
    typename graph_traits<Graph>::vertex_descriptor
    find_labeled_vertex(Container const& c, Graph const&, Label const& l,
                        random_access_container_tag)
    { return l < c.size() ? c[l] : graph_traits<Graph>::null_vertex(); }

    // Tag dispatch for pair associative maps (more or less).
    template <typename Container, typename Graph, typename Label>
    typename graph_traits<Graph>::vertex_descriptor
    find_labeled_vertex(Container const& c, Graph const&, Label const& l,
                        associative_container_tag)
    {
        typename Container::const_iterator i = c.find(l);
        return i != c.end() ? i->second : graph_traits<Graph>::null_vertex();
    }

    // Dispatcher
    template <typename Container, typename Graph, typename Label>
    typename graph_traits<Graph>::vertex_descriptor
    find_labeled_vertex(Container const& c, Graph const& g, Label const& l)
    { return find_labeled_vertex(c, g, l, container_category(c)); }
    //@}

    /** @name Put Vertex Label */
    //@{
    // Tag dispatch on vectors.
    template <typename Container, typename Label, typename Graph, typename Vertex>
    bool put_vertex_label(Container& c, Graph const&, Label const& l, Vertex v,
                          random_access_container_tag)
    {
        // If the element is already occupied, then we probably don't want to
        // overwrite it.
        if(c[l] == graph_traits<Graph>::null_vertex()) return false;
        c[l] = v;
        return true;
    }

    // Attempt the insertion and return its result.
    template <typename Container, typename Label, typename Graph, typename Vertex>
    bool put_vertex_label(Container& c, Graph const&, Label const& l, Vertex v,
                          unique_associative_container_tag)
    { return c.insert(std::make_pair(l, v)).second; }

    // Insert the pair and return true.
    template <typename Container, typename Label, typename Graph, typename Vertex>
    bool put_vertex_label(Container& c, Graph const&, Label const& l, Vertex v,
                          multiple_associative_container_tag)
    {
        c.insert(std::make_pair(l, v));
        return true;
    }

    // Dispatcher
    template <typename Container, typename Label, typename Graph, typename Vertex>
    bool put_vertex_label(Container& c, Graph const& g, Label const& l, Vertex v)
    { return put_vertex_label(c, g, l, v, container_category(c)); }
    //@}

} // namespace detail

struct labeled_graph_class_tag { };

/** @internal
 * This class is responsible for the deduction and declaration of type names
 * for the labeled_graph class template.
 */
template <typename Graph, typename Label, typename Selector>
struct labeled_graph_types {
    typedef Graph graph_type;

    // Label and maps
    typedef Label label_type;
    typedef typename graph_detail::choose_map<
        Selector, Label, typename graph_traits<Graph>::vertex_descriptor
    >::type map_type;
};

/**
 * The labeled_graph class is a graph adaptor that maintains a mapping between
 * vertex labels and vertex descriptors.
 *
 * @todo This class is somewhat redundant for adjacency_list<*, vecS>  if
 * the intended label is an unsigned int (and perhaps some other cases), but
 * it does avoid some weird ambiguities (i.e. adding a vertex with a label that
 * does not match its target index).
 *
 * @todo This needs to be reconciled with the named_graph, but since there is
 * no documentation or examples, its not going to happen.
 */
template <typename Graph, typename Label, typename Selector = defaultS>
class labeled_graph
    : protected labeled_graph_types<Graph, Label, Selector>
{
    typedef labeled_graph_types<Graph, Label, Selector> Base;
public:
    typedef labeled_graph_class_tag graph_tag;

    typedef typename Base::graph_type graph_type;
    typedef typename graph_traits<graph_type>::vertex_descriptor vertex_descriptor;
    typedef typename graph_traits<graph_type>::edge_descriptor edge_descriptor;
    typedef typename graph_traits<graph_type>::directed_category directed_category;
    typedef typename graph_traits<graph_type>::edge_parallel_category edge_parallel_category;
    typedef typename graph_traits<graph_type>::traversal_category traversal_category;

    typedef typename graph_traits<graph_type>::out_edge_iterator out_edge_iterator;
    typedef typename graph_traits<graph_type>::in_edge_iterator in_edge_iterator;
    typedef typename graph_traits<graph_type>::adjacency_iterator adjacency_iterator;
    typedef typename graph_traits<graph_type>::degree_size_type degree_size_type;

    typedef typename graph_traits<graph_type>::vertex_iterator vertex_iterator;
    typedef typename graph_traits<graph_type>::vertices_size_type vertices_size_type;
    typedef typename graph_traits<graph_type>::edge_iterator edge_iterator;
    typedef typename graph_traits<graph_type>::edges_size_type edges_size_type;

    typedef typename graph_type::graph_property_type graph_property_type;
    typedef typename graph_type::graph_bundled graph_bundled;

    typedef typename graph_type::vertex_property_type vertex_property_type;
    typedef typename graph_type::vertex_bundled vertex_bundled;

    typedef typename graph_type::edge_property_type edge_property_type;
    typedef typename graph_type::edge_bundled edge_bundled;

    typedef typename Base::label_type label_type;
    typedef typename Base::map_type map_type;

public:
    labeled_graph(graph_property_type const& gp = graph_property_type())
        : _graph(gp), _map()
    { }

    labeled_graph(labeled_graph const& x)
        : _graph(x._graph), _map(x._map)
    { }

    // This constructor can only be used if map_type supports positional
    // range insertion (i.e. its a vector). This is the only case where we can
    // try to guess the intended labels for graph.
    labeled_graph(vertices_size_type n,
                  graph_property_type const& gp = graph_property_type())
        : _graph(n, gp), _map()
    {
        std::pair<vertex_iterator, vertex_iterator> rng = vertices(_graph);
        _map.insert(_map.end(), rng.first, rng.second);
    }

    // Construct a graph over n vertices, each of which receives a label from
    // the range [l, l + n). Note that the graph is not directly constructed
    // over the n vertices, but added sequentially. This constructor is
    // necessarily slower than the underlying counterpart.
    template <typename LabelIter>
    labeled_graph(vertices_size_type n, LabelIter l,
                  graph_property_type const& gp = graph_property_type())
        : _graph(gp)
    { while(n-- > 0) add_vertex(*l++); }

    // Construct the graph over n vertices each of which has a label in the
    // range [l, l + n) and a property in the range [p, p + n).
    template <typename LabelIter, typename PropIter>
    labeled_graph(vertices_size_type n, LabelIter l, PropIter p,
                  graph_property_type const& gp = graph_property_type())
        : _graph(gp)
    { while(n-- > 0) add_vertex(*l++, *p++); }

    labeled_graph& operator=(labeled_graph const& x) {
        _graph = x._graph;
        _map = x._map;
        return *this;
    }

    /** @name Graph Accessors */
    //@{
    graph_type& graph() { return _graph; }
    graph_type const& graph() const { return _graph; }
    //@}

    /**
     * Create a new label for the given vertex, returning false, if the label
     * cannot be created.
     */
    bool label_vertex(vertex_descriptor v, Label const& l)
    { return graph_detail::put_vertex_label(_map, _graph, l, v); }

    /** @name Add Vertex
     * Add a vertex to the graph, returning the descriptor. If the vertices
     * are uniquely labeled and the label already exists within the graph,
     * then no vertex is added, and the returned descriptor refers to the
     * existing vertex. A vertex property can be given as a parameter, if
     * needed.
     */
    //@{
    vertex_descriptor add_vertex(Label const& l) {
        return graph_detail::insert_labeled_vertex(
            _map, _graph, l, vertex_property_type()
            ).first;
    }

    vertex_descriptor add_vertex(Label const& l, vertex_property_type const& p)
    { return graph_detail::insert_labeled_vertex(_map, _graph, l, p).first; }
    //@}

    /** @name Insert Vertex
     * Insert a vertex into the graph, returning a pair containing the
     * descriptor of a vertex and a boolean value that describes whether or not
     * a new vertex was inserted. If vertices are not uniquely labeled, then
     * insertion will always succeed.
     */
    //@{
    std::pair<vertex_descriptor, bool> insert_vertex(Label const& l) {
        return graph_detail::insert_labeled_vertex(
            _map, _graph, l, vertex_property_type()
        );
    }

    std::pair<vertex_descriptor, bool>
    insert_vertex(Label const& l, vertex_property_type const& p)
    { return graph_detail::insert_labeled_vertex(_map, _graph, l, p); }
    //@}

    /** Remove the vertex with the given label. */
    void remove_vertex(Label const& l)
    { return boost::remove_vertex(vertex(l), _graph); }

    /** Return a descriptor for the given label. */
    vertex_descriptor vertex(Label const& l) const
    { return graph_detail::find_labeled_vertex(_map, _graph, l); }

#ifndef BOOST_GRAPH_NO_BUNDLED_PROPERTIES
    /** @name Bundled Properties */
    //@{
    // Lookup the requested vertex and return the bundle.
    vertex_bundled& operator[](Label const& l)
    { return _graph[vertex(l)]; }

    vertex_bundled const& operator[](Label const& l) const
    { return _graph[vertex(l)]; }

    // Delegate edge lookup to the underlying graph.
    edge_bundled& operator[](edge_descriptor e)
    { return _graph[e]; }

    edge_bundled const& operator[](edge_descriptor e) const
    { return _graph[e]; }
    //@}
#endif

    /** Return a null descriptor */
    static vertex_descriptor null_vertex()
    { return graph_traits<graph_type>::null_vertex(); }

private:
    graph_type _graph;
    map_type _map;
};

/**
 * The partial specialization over graph pointers allows the construction
 * of temporary labeled graph objects. In this case, the labels are destructed
 * when the wrapper goes out of scope.
 */
template <typename Graph, typename Label, typename Selector>
class labeled_graph<Graph*, Label, Selector>
    : protected labeled_graph_types<Graph, Label, Selector>
{
    typedef labeled_graph_types<Graph, Label, Selector> Base;
public:
    typedef labeled_graph_class_tag graph_tag;

    typedef typename Base::graph_type graph_type;
    typedef typename graph_traits<graph_type>::vertex_descriptor vertex_descriptor;
    typedef typename graph_traits<graph_type>::edge_descriptor edge_descriptor;
    typedef typename graph_traits<graph_type>::directed_category directed_category;
    typedef typename graph_traits<graph_type>::edge_parallel_category edge_parallel_category;
    typedef typename graph_traits<graph_type>::traversal_category traversal_category;

    typedef typename graph_traits<graph_type>::out_edge_iterator out_edge_iterator;
    typedef typename graph_traits<graph_type>::in_edge_iterator in_edge_iterator;
    typedef typename graph_traits<graph_type>::adjacency_iterator adjacency_iterator;
    typedef typename graph_traits<graph_type>::degree_size_type degree_size_type;

    typedef typename graph_traits<graph_type>::vertex_iterator vertex_iterator;
    typedef typename graph_traits<graph_type>::vertices_size_type vertices_size_type;
    typedef typename graph_traits<graph_type>::edge_iterator edge_iterator;
    typedef typename graph_traits<graph_type>::edges_size_type edges_size_type;

    typedef typename graph_type::vertex_property_type vertex_property_type;
    typedef typename graph_type::edge_property_type edge_property_type;
    typedef typename graph_type::graph_property_type graph_property_type;
    typedef typename graph_type::vertex_bundled vertex_bundled;
    typedef typename graph_type::edge_bundled edge_bundled;

    typedef typename Base::label_type label_type;
    typedef typename Base::map_type map_type;

    labeled_graph(graph_type* g)
        : _graph(g)
    { }

    /** @name Graph Access */
    //@{
    graph_type& graph() { return *_graph; }
    graph_type const& graph() const { return *_graph; }
    //@}

    /**
     * Create a new label for the given vertex, returning false, if the label
     * cannot be created.
     */
    bool label_vertex(vertex_descriptor v, Label const& l)
    { return graph_detail::put_vertex_label(_map, *_graph, l, v); }

    /** @name Add Vertex */
    //@{
    vertex_descriptor add_vertex(Label const& l) {
        return graph_detail::insert_labeled_vertex(
            _map, *_graph, l, vertex_property_type()
            ).first;
    }

    vertex_descriptor add_vertex(Label const& l, vertex_property_type const& p)
    { return graph_detail::insert_labeled_vertex(_map, *_graph, l, p).first; }

    std::pair<vertex_descriptor, bool> insert_vertex(Label const& l) {
        return graph_detail::insert_labeled_vertex(
            _map, *_graph, l, vertex_property_type()
        );
    }
    //@}

    /** Try to insert a vertex with the given label. */
    std::pair<vertex_descriptor, bool>
    insert_vertex(Label const& l, vertex_property_type const& p)
    { return graph_detail::insert_labeled_vertex(_map, *_graph, l, p); }

    /** Remove the vertex with the given label. */
    void remove_vertex(Label const& l)
    { return boost::remove_vertex(vertex(l), *_graph); }

    /** Return a descriptor for the given label. */
    vertex_descriptor vertex(Label const& l) const
    { return graph_detail::find_labeled_vertex(_map, *_graph, l); }

#ifndef BOOST_GRAPH_NO_BUNDLED_PROPERTIES
    /** @name Bundled Properties */
    //@{
    // Lookup the requested vertex and return the bundle.
    vertex_bundled& operator[](Label const& l)
    { return (*_graph)[vertex(l)]; }

    vertex_bundled const& operator[](Label const& l) const
    { return (*_graph)[vertex(l)]; }

    // Delegate edge lookup to the underlying graph.
    edge_bundled& operator[](edge_descriptor e)
    { return (*_graph)[e]; }

    edge_bundled const& operator[](edge_descriptor e) const
    { return (*_graph)[e]; }
    //@}
#endif

    static vertex_descriptor null_vertex()
    { return graph_traits<graph_type>::null_vertex(); }

private:
    graph_type* _graph;
    map_type _map;
};

#define LABELED_GRAPH_PARAMS typename G, typename L, typename S
#define LABELED_GRAPH labeled_graph<G,L,S>

/** @name Labeled Graph */
//@{
template <LABELED_GRAPH_PARAMS>
inline bool label_vertex(typename LABELED_GRAPH::vertex_descriptor v,
                         typename LABELED_GRAPH::label_type const l,
                         LABELED_GRAPH& g)
{ return g.label_vertex(v, l); }

template <LABELED_GRAPH_PARAMS>
inline typename LABELED_GRAPH::vertex_descriptor
vertex_by_label(typename LABELED_GRAPH::label_type const l,
                LABELED_GRAPH& g)
{ return g.vertex(l); }
//@}

/** @name Graph */
//@{
template <LABELED_GRAPH_PARAMS>
inline std::pair<typename LABELED_GRAPH::edge_descriptor, bool>
edge(typename LABELED_GRAPH::vertex_descriptor const& u,
     typename LABELED_GRAPH::vertex_descriptor const& v,
     LABELED_GRAPH const& g)
{ return edge(u, v, g.graph()); }

// Labeled Extensions
template <LABELED_GRAPH_PARAMS>
inline std::pair<typename LABELED_GRAPH::edge_descriptor, bool>
edge_by_label(typename LABELED_GRAPH::label_type const& u,
              typename LABELED_GRAPH::label_type const& v,
              LABELED_GRAPH const& g)
{ return edge(g.vertex(u), g.vertex(v), g); }
//@}

/** @name Incidence Graph */
//@{
template <LABELED_GRAPH_PARAMS>
inline std::pair<
    typename LABELED_GRAPH::out_edge_iterator,
    typename LABELED_GRAPH::out_edge_iterator>
out_edges(typename LABELED_GRAPH::vertex_descriptor v, LABELED_GRAPH const& g)
{ return out_edges(v, g.graph()); }

template <LABELED_GRAPH_PARAMS>
inline typename LABELED_GRAPH::degree_size_type
out_degree(typename LABELED_GRAPH::vertex_descriptor v, LABELED_GRAPH const& g)
{ return out_degree(v, g.graph()); }

template <LABELED_GRAPH_PARAMS>
inline typename LABELED_GRAPH::vertex_descriptor
source(typename LABELED_GRAPH::edge_descriptor e, LABELED_GRAPH const& g)
{ return source(e, g.graph()); }

template <LABELED_GRAPH_PARAMS>
inline typename LABELED_GRAPH::vertex_descriptor
target(typename LABELED_GRAPH::edge_descriptor e, LABELED_GRAPH const& g)
{ return target(e, g.graph()); }
//@}

/** @name Bidirectional Graph */
//@{
template <LABELED_GRAPH_PARAMS>
inline std::pair<
    typename LABELED_GRAPH::in_edge_iterator,
    typename LABELED_GRAPH::in_edge_iterator>
in_edges(typename LABELED_GRAPH::vertex_descriptor v, LABELED_GRAPH const& g)
{ return in_edges(v, g.graph()); }

template <LABELED_GRAPH_PARAMS>
inline typename LABELED_GRAPH::degree_size_type
in_degree(typename LABELED_GRAPH::vertex_descriptor v, LABELED_GRAPH const& g)
{ return in_degree(v, g.graph()); }

template <LABELED_GRAPH_PARAMS>
inline typename LABELED_GRAPH::degree_size_type
degree(typename LABELED_GRAPH::vertex_descriptor v, LABELED_GRAPH const& g)
{ return degree(v, g.graph()); }
//@}

/** @name Adjacency Graph */
//@{
template <LABELED_GRAPH_PARAMS>
inline std::pair<
    typename LABELED_GRAPH::adjacency_iterator,
    typename LABELED_GRAPH::adjacency_iterator>
adjacenct_vertices(typename LABELED_GRAPH::vertex_descriptor v, LABELED_GRAPH const& g)
{ return adjacent_vertices(v, g.graph()); }
//@}

/** @name VertexListGraph */
//@{
template <LABELED_GRAPH_PARAMS>
inline std::pair<
    typename LABELED_GRAPH::vertex_iterator,
    typename LABELED_GRAPH::vertex_iterator>
vertices(LABELED_GRAPH const& g)
{ return vertices(g.graph()); }

template <LABELED_GRAPH_PARAMS>
inline typename LABELED_GRAPH::vertices_size_type
num_vertices(LABELED_GRAPH const& g)
{ return num_vertices(g.graph()); }
//@}

/** @name EdgeListGraph */
//@{
template <LABELED_GRAPH_PARAMS>
inline std::pair<
    typename LABELED_GRAPH::edge_iterator,
    typename LABELED_GRAPH::edge_iterator>
edges(LABELED_GRAPH const& g)
{ return edges(g.graph()); }

template <LABELED_GRAPH_PARAMS>
inline typename LABELED_GRAPH::edges_size_type
num_edges(LABELED_GRAPH const& g)
{ return num_edges(g.graph()); }
//@}

/** @internal @name Property Lookup */
//@{
namespace graph_detail {
    struct labeled_graph_vertex_property_selector {
        template <class LabeledGraph, class Property, class Tag>
        struct bind_ {
            typedef typename LabeledGraph::graph_type Graph;
            typedef property_map<Graph, Tag> PropertyMap;
            typedef typename PropertyMap::type type;
            typedef typename PropertyMap::const_type const_type;
        };
    };

    struct labeled_graph_edge_property_selector {
        template <class LabeledGraph, class Property, class Tag>
        struct bind_ {
            typedef typename LabeledGraph::graph_type Graph;
            typedef property_map<Graph, Tag> PropertyMap;
            typedef typename PropertyMap::type type;
            typedef typename PropertyMap::const_type const_type;
        };
    };
}

template <>
struct vertex_property_selector<labeled_graph_class_tag> {
    typedef graph_detail::labeled_graph_vertex_property_selector type;
};

template <>
struct edge_property_selector<labeled_graph_class_tag> {
    typedef graph_detail::labeled_graph_edge_property_selector type;
};
//@}

/** @name Property Graph */
//@{
template <LABELED_GRAPH_PARAMS, typename Prop>
inline typename property_map<LABELED_GRAPH, Prop>::type
get(Prop p, LABELED_GRAPH& g)
{ return get(p, g.graph()); }

template <LABELED_GRAPH_PARAMS, typename Prop>
inline typename property_map<LABELED_GRAPH, Prop>::const_type
get(Prop p, LABELED_GRAPH const& g)
{ return get(p, g.graph()); }

template <LABELED_GRAPH_PARAMS, typename Prop, typename Key>
inline typename property_traits<
    typename property_map<typename LABELED_GRAPH::graph_type, Prop>::const_type
>::value_type
get(Prop p, LABELED_GRAPH const& g, const Key& k)
{ return get(p, g.graph(), k); }

template <LABELED_GRAPH_PARAMS, typename Prop, typename Key, typename Value>
inline void
put(Prop p, LABELED_GRAPH& g, Key const& k, Value const& v)
{ put(p, g.graph(), k, v); }
//@}

/** @name Mutable Graph */
//@{
template <LABELED_GRAPH_PARAMS>
inline std::pair<typename LABELED_GRAPH::edge_descriptor, bool>
add_edge(typename LABELED_GRAPH::vertex_descriptor const& u,
         typename LABELED_GRAPH::vertex_descriptor const& v,
         LABELED_GRAPH& g)
{ return add_edge(u, v, g.graph()); }

template <LABELED_GRAPH_PARAMS>
inline std::pair<typename LABELED_GRAPH::edge_descriptor, bool>
add_edge(typename LABELED_GRAPH::vertex_descriptor const& u,
         typename LABELED_GRAPH::vertex_descriptor const& v,
         typename LABELED_GRAPH::edge_property_type const& p,
         LABELED_GRAPH& g)
{ return add_edge(u, v, p, g.graph()); }

template <LABELED_GRAPH_PARAMS>
inline void
clear_vertex(typename LABELED_GRAPH::vertex_descriptor v, LABELED_GRAPH& g)
{ return clear_vertex(v, g.graph()); }

template <LABELED_GRAPH_PARAMS>
inline void
remove_edge(typename LABELED_GRAPH::edge_descriptor e, LABELED_GRAPH& g)
{ return remove_edge(e, g.graph()); }

template <LABELED_GRAPH_PARAMS>
inline void
remove_edge(typename LABELED_GRAPH::vertex_descriptor u,
            typename LABELED_GRAPH::vertex_descriptor v,
            LABELED_GRAPH& g)
{ return remove_edge(u, v, g.graph()); }

// Labeled extensions
template <LABELED_GRAPH_PARAMS>
inline std::pair<typename LABELED_GRAPH::edge_descriptor, bool>
add_edge_by_label(typename LABELED_GRAPH::label_type const& u,
                  typename LABELED_GRAPH::label_type const& v,
                  LABELED_GRAPH& g)
{ return add_edge(g.vertex(u), g.vertex(v), g); }

template <LABELED_GRAPH_PARAMS>
inline std::pair<typename LABELED_GRAPH::edge_descriptor, bool>
add_edge_by_label(typename LABELED_GRAPH::label_type const& u,
                  typename LABELED_GRAPH::label_type const& v,
                  typename LABELED_GRAPH::edge_property_type const& p,
                  LABELED_GRAPH& g)
{ return add_edge(g.vertex(u), g.vertex(v), p, g); }

template <LABELED_GRAPH_PARAMS>
inline void
clear_vertex_by_label(typename LABELED_GRAPH::label_type const& l, LABELED_GRAPH& g)
{ clear_vertex(g.vertex(l), g.graph()); }

template <LABELED_GRAPH_PARAMS>
inline void
remove_edge_by_label(typename LABELED_GRAPH::label_type const& u,
                     typename LABELED_GRAPH::label_type const& v,
                     LABELED_GRAPH& g)
{ remove_edge(g.vertex(u), g.vertex(v), g.graph()); }
//@}

/** @name Labeled Mutable Graph
 * The labeled mutable graph hides the add_ and remove_ vertex functions from
 * the mutable graph concept. Note that the remove_vertex is hidden because
 * removing the vertex without its key could leave a dangling reference in
 * the map.
 */
//@{
template <LABELED_GRAPH_PARAMS>
inline typename LABELED_GRAPH::vertex_descriptor
add_vertex(typename LABELED_GRAPH::label_type const& l,
           LABELED_GRAPH& g)
{ return g.add_vertex(l); }

// MutableLabeledPropertyGraph::add_vertex(l, vp, g)
template <LABELED_GRAPH_PARAMS>
inline typename LABELED_GRAPH::vertex_descriptor
add_vertex(typename LABELED_GRAPH::label_type const& l,
           typename LABELED_GRAPH::vertex_property_type const& p,
           LABELED_GRAPH& g)
{ return g.add_vertex(l, p); }

template <LABELED_GRAPH_PARAMS>
inline void
remove_vertex(typename LABELED_GRAPH::label_type const& l, LABELED_GRAPH& g)
{ g.remove_vertex(l); }
//@}

#undef LABELED_GRAPH_PARAMS
#undef LABELED_GRAPH

} // namespace boost

// Pull the labeled graph traits
#include <boost/graph/detail/labeled_graph_traits.hpp>

#endif // BOOST_GRAPH_LABELED_GRAPH_HPP