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//=======================================================================
// Copyright 2002 Indiana University.
// Authors: Andrew Lumsdaine, Lie-Quan Lee, Jeremy G. Siek
//
// Distributed under 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)
//=======================================================================
#include <boost/graph/graph_as_tree.hpp>
#include <boost/graph/adjacency_list.hpp>
#include <boost/cstdlib.hpp>
#include <iostream>
class tree_printer
{
public:
template < typename Node, typename Tree > void preorder(Node, Tree&)
{
std::cout << "(";
}
template < typename Node, typename Tree > void inorder(Node n, Tree& t)
{
std::cout << get(boost::vertex_name, t)[n];
}
template < typename Node, typename Tree > void postorder(Node, Tree&)
{
std::cout << ")";
}
};
int main()
{
using namespace boost;
typedef adjacency_list< vecS, vecS, directedS,
property< vertex_name_t, std::string > >
graph_t;
typedef graph_traits< graph_t >::vertex_descriptor vertex_t;
graph_t g;
vertex_t a = add_vertex(g), b = add_vertex(g), c = add_vertex(g);
add_edge(a, b, g);
add_edge(a, c, g);
typedef property_map< graph_t, vertex_name_t >::type vertex_name_map_t;
vertex_name_map_t name = get(vertex_name, g);
name[a] = "A";
name[b] = "B";
name[c] = "C";
typedef iterator_property_map< std::vector< vertex_t >::iterator,
property_map< graph_t, vertex_index_t >::type >
parent_map_t;
std::vector< vertex_t > parent(num_vertices(g));
typedef graph_as_tree< graph_t, parent_map_t > tree_t;
tree_t t(
g, a, make_iterator_property_map(parent.begin(), get(vertex_index, g)));
tree_printer vis;
traverse_tree(a, t, vis);
return exit_success;
}
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