--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/stdcpp/tsrc/Boost_test/graph/src/dfs.cpp Fri Jun 04 16:20:51 2010 +0100
@@ -0,0 +1,183 @@
+//=======================================================================
+// Copyright 2001 University of Notre Dame.
+// Author: 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)
+//=======================================================================
+/*
+ * © Portions copyright (c) 2006-2007 Nokia Corporation. All rights reserved.
+*/
+
+#include <boost/config.hpp>
+#include <boost/test/minimal.hpp>
+#include <stdlib.h>
+
+#include <boost/graph/depth_first_search.hpp>
+#include <boost/graph/adjacency_list.hpp>
+#include <boost/graph/graph_archetypes.hpp>
+#include <boost/graph/graph_utility.hpp>
+#include <boost/graph/random.hpp>
+
+#include <boost/random/mersenne_twister.hpp>
+#ifdef __SYMBIAN32__
+#include "std_log_result.h"
+#define LOG_FILENAME_LINE __FILE__, __LINE__
+#endif
+template <typename ColorMap, typename ParentMap,
+ typename DiscoverTimeMap, typename FinishTimeMap>
+class dfs_test_visitor {
+ typedef typename boost::property_traits<ColorMap>::value_type ColorValue;
+ typedef typename boost::color_traits<ColorValue> Color;
+public:
+ dfs_test_visitor(ColorMap color, ParentMap p, DiscoverTimeMap d,
+ FinishTimeMap f)
+ : m_color(color), m_parent(p),
+ m_discover_time(d), m_finish_time(f), m_time(0) { }
+
+ template <class Vertex, class Graph>
+ void initialize_vertex(Vertex u, Graph& g) {
+ BOOST_CHECK( boost::get(m_color, u) == Color::white() );
+ }
+ template <class Vertex, class Graph>
+ void start_vertex(Vertex u, Graph& g) {
+ BOOST_CHECK( boost::get(m_color, u) == Color::white() );
+ }
+ template <class Vertex, class Graph>
+ void discover_vertex(Vertex u, Graph& g) {
+ using namespace boost;
+ BOOST_CHECK( get(m_color, u) == Color::gray() );
+ BOOST_CHECK( get(m_color, get(m_parent, u)) == Color::gray() );
+
+ put(m_discover_time, u, m_time++);
+ }
+ template <class Edge, class Graph>
+ void examine_edge(Edge e, Graph& g) {
+ using namespace boost;
+ BOOST_CHECK( get(m_color, source(e, g)) == Color::gray() );
+ }
+ template <class Edge, class Graph>
+ void tree_edge(Edge e, Graph& g) {
+ using namespace boost;
+ BOOST_CHECK( get(m_color, target(e, g)) == Color::white() );
+
+ put(m_parent, target(e, g), source(e, g));
+ }
+ template <class Edge, class Graph>
+ void back_edge(Edge e, Graph& g) {
+ using namespace boost;
+ BOOST_CHECK( get(m_color, target(e, g)) == Color::gray() );
+ }
+ template <class Edge, class Graph>
+ void forward_or_cross_edge(Edge e, Graph& g) {
+ using namespace boost;
+ BOOST_CHECK( get(m_color, target(e, g)) == Color::black() );
+ }
+ template <class Vertex, class Graph>
+ void finish_vertex(Vertex u, Graph& g) {
+ using namespace boost;
+ BOOST_CHECK( get(m_color, u) == Color::black() );
+
+ put(m_finish_time, u, m_time++);
+ }
+private:
+ ColorMap m_color;
+ ParentMap m_parent;
+ DiscoverTimeMap m_discover_time;
+ FinishTimeMap m_finish_time;
+ typename boost::property_traits<DiscoverTimeMap>::value_type m_time;
+};
+
+template <typename Graph>
+struct dfs_test
+{
+ typedef boost::graph_traits<Graph> Traits;
+ typedef typename Traits::vertices_size_type
+ vertices_size_type;
+
+ static void go(vertices_size_type max_V) {
+ using namespace boost;
+ typedef typename Traits::vertex_descriptor vertex_descriptor;
+ typedef typename boost::property_map<Graph,
+ boost::vertex_color_t>::type ColorMap;
+ typedef typename boost::property_traits<ColorMap>::value_type ColorValue;
+ typedef typename boost::color_traits<ColorValue> Color;
+
+ vertices_size_type i, k;
+ typename Traits::edges_size_type j;
+ typename Traits::vertex_iterator vi, vi_end, ui, ui_end;
+
+ boost::mt19937 gen;
+
+ for (i = 0; i < max_V; ++i)
+ for (j = 0; j < i*i; ++j) {
+ Graph g;
+ generate_random_graph(g, i, j, gen);
+
+ ColorMap color = get(boost::vertex_color, g);
+ std::vector<vertex_descriptor> parent(num_vertices(g));
+ for (k = 0; k < num_vertices(g); ++k)
+ parent[k] = k;
+ std::vector<int> discover_time(num_vertices(g)),
+ finish_time(num_vertices(g));
+
+ dfs_test_visitor<ColorMap, vertex_descriptor*,
+ int*, int*> vis(color, &parent[0],
+ &discover_time[0], &finish_time[0]);
+
+ boost::depth_first_search(g, visitor(vis).color_map(color));
+
+ // all vertices should be black
+ for (boost::tie(vi, vi_end) = vertices(g); vi != vi_end; ++vi)
+ BOOST_CHECK(get(color, *vi) == Color::black());
+
+ // check parenthesis structure of discover/finish times
+ // See CLR p.480
+ for (boost::tie(ui, ui_end) = vertices(g); ui != ui_end; ++ui)
+ for (boost::tie(vi, vi_end) = vertices(g); vi != vi_end; ++vi) {
+ vertex_descriptor u = *ui, v = *vi;
+ if (u != v) {
+ BOOST_CHECK( finish_time[u] < discover_time[v]
+ || finish_time[v] < discover_time[u]
+ || (discover_time[v] < discover_time[u]
+ && finish_time[u] < finish_time[v]
+ && boost::is_descendant(u, v, &parent[0]))
+ || (discover_time[u] < discover_time[v]
+ && finish_time[v] < finish_time[u]
+ && boost::is_descendant(v, u, &parent[0]))
+ );
+ }
+ }
+ }
+
+ }
+};
+
+
+// usage: dfs.exe [max-vertices=15]
+
+int test_main(int argc, char* argv[])
+{
+ int max_V = 7;
+ if (argc > 1)
+ max_V = atoi(argv[1]);
+
+ // Test directed graphs.
+ dfs_test< boost::adjacency_list<boost::vecS, boost::vecS, boost::directedS,
+ boost::property<boost::vertex_color_t, boost::default_color_type> >
+ >::go(max_V);
+ // Test undirected graphs.
+ dfs_test< boost::adjacency_list<boost::vecS, boost::vecS, boost::undirectedS,
+ boost::property<boost::vertex_color_t, boost::default_color_type> >
+ >::go(max_V);
+
+ #ifdef __SYMBIAN32__
+ std_log(LOG_FILENAME_LINE,"[End Test Case ]");
+
+ testResultXml("dfs");
+ close_log_file();
+#endif
+ return 0;
+}
+