//======================================================================= // Copyright 1997, 1998, 1999, 2000 University of Notre Dame. // 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/config.hpp> #include <iostream> #include <functional> #include <string> #include <boost/graph/adjacency_list.hpp> #include <boost/graph/properties.hpp> /* Sample output: 0 --chandler--> 1 --joe--> 1 1 --chandler--> 0 --joe--> 0 --curly--> 2 --dick--> 3 --dick--> 3 2 --curly--> 1 --tom--> 4 3 --dick--> 1 --dick--> 1 --harry--> 4 4 --tom--> 2 --harry--> 3 name(0,1) = chandler name(0,1) = chandler name(0,1) = joe */ template <class StoredEdge> struct order_by_name : public std::binary_function<StoredEdge,StoredEdge,bool> { bool operator()(const StoredEdge& e1, const StoredEdge& e2) const { // Order by target vertex, then by name. // std::pair's operator< does a nice job of implementing // lexicographical compare on tuples. return std::make_pair(e1.get_target(), boost::get(boost::edge_name, e1)) < std::make_pair(e2.get_target(), boost::get(boost::edge_name, e2)); } }; #if !defined BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION struct ordered_set_by_nameS { }; namespace boost { template <class ValueType> struct container_gen<ordered_set_by_nameS, ValueType> { typedef std::multiset<ValueType, order_by_name<ValueType> > type; }; } #else struct ordered_set_by_nameS { template <class T> struct bind_ { typedef std::multiset<T, order_by_name<T> > type; }; }; namespace boost { template <> struct container_selector<ordered_set_by_nameS> { typedef ordered_set_by_nameS type; }; } #endif namespace boost { template <> struct parallel_edge_traits<ordered_set_by_nameS> { typedef allow_parallel_edge_tag type; }; } int main() { #ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION std::cout << "This program requires partial specialization" << std::endl; #else using namespace boost; typedef property<edge_name_t, std::string> EdgeProperty; typedef adjacency_list<ordered_set_by_nameS, vecS, undirectedS, no_property, EdgeProperty> graph_type; graph_type g; add_edge(0, 1, EdgeProperty("joe"), g); add_edge(1, 2, EdgeProperty("curly"), g); add_edge(1, 3, EdgeProperty("dick"), g); add_edge(1, 3, EdgeProperty("dick"), g); add_edge(2, 4, EdgeProperty("tom"), g); add_edge(3, 4, EdgeProperty("harry"), g); add_edge(0, 1, EdgeProperty("chandler"), g); property_map<graph_type, vertex_index_t>::type id = get(vertex_index, g); property_map<graph_type, edge_name_t>::type name = get(edge_name, g); graph_traits<graph_type>::vertex_iterator i, end; graph_traits<graph_type>::out_edge_iterator ei, edge_end; for (boost::tie(i, end) = vertices(g); i != end; ++i) { std::cout << id[*i] << " "; for (boost::tie(ei, edge_end) = out_edges(*i, g); ei != edge_end; ++ei) std::cout << " --" << name[*ei] << "--> " << id[target(*ei, g)] << " "; std::cout << std::endl; } std::cout << std::endl; bool found; typedef graph_traits<graph_type> Traits; Traits::edge_descriptor e; Traits::out_edge_iterator e_first, e_last; tie(e, found) = edge(0, 1, g); if (found) std::cout << "name(0,1) = " << name[e] << std::endl; else std::cout << "not found" << std::endl; std::cout << std::endl; tie(e_first, e_last) = edge_range(0, 1, g); while (e_first != e_last) std::cout << "name(0,1) = " << name[*e_first++] << std::endl; #endif return 0; }