projects / ceph.git / blame
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1 | <HTML> |
| 2 | <!-- | |
| 3 | Copyright (c) Jeremy Siek, Lie-Quan Lee, and Andrew Lumsdaine 2000 | |
| 4 | ||
| 5 | Distributed under the Boost Software License, Version 1.0. | |
| 6 | (See accompanying file LICENSE_1_0.txt or copy at | |
| 7 | http://www.boost.org/LICENSE_1_0.txt) | |
| 8 | --> | |
| 9 | <Head> | |
| 10 | <Title>Boost Graph Library: bfs_visitor</Title> | |
| 11 | <BODY BGCOLOR="#ffffff" LINK="#0000ee" TEXT="#000000" VLINK="#551a8b" | |
| 12 | ALINK="#ff0000"> | |
| 13 | <IMG SRC="../../../boost.png" | |
| 14 | ALT="C++ Boost" width="277" height="86"> | |
| 15 | ||
| 16 | <BR Clear> | |
| 17 | ||
| 18 | <H1> | |
| 19 | <pre> | |
| 20 | bfs_visitor<EventVisitorList> | |
| 21 | </pre> | |
| 22 | </H1> | |
| 23 | ||
| 24 | This class is an adapter that converts a list of <a | |
| 25 | href="./EventVisitor.html">EventVisitor</a>s (constructed using | |
| 26 | <tt>std::pair</tt>) into a <a href="./BFSVisitor.html">BFSVisitor</a>. | |
| 27 | ||
| 28 | ||
| 29 | <h3>Example</h3> | |
| 30 | ||
| 31 | This is an excerpt from <a | |
| 32 | href="../example/bfs.cpp"><tt>examples/bfs.cpp</tt></a> where three | |
| 33 | event-visitors are combined to make a BFS visitor. The functions | |
| 34 | <tt>boost::record_distances</tt>, <tt>boost::record_predecessors</tt>, | |
| 35 | and <tt>copy_graph</tt> are all functions that create an event | |
| 36 | visitor. | |
| 37 | ||
| 38 | <pre> | |
| 39 | // Construct graph G and obtain the source vertex s ... | |
| 40 | ||
| 41 | boost::breadth_first_search(G, s, | |
| 42 | boost::make_bfs_visitor( | |
| 43 | std::make_pair(boost::record_distances(d, boost::on_tree_edge()), | |
| 44 | std::make_pair(boost::record_predecessors(p.begin(), | |
| 45 | boost::on_tree_edge()), | |
| 46 | copy_graph(G_copy, boost::on_examine_edge())))) ); | |
| 47 | </pre> | |
| 48 | ||
| 49 | ||
| 50 | <h3>Model of</h3> | |
| 51 | ||
| 52 | <a href="./BFSVisitor.html">BFSVisitor</a> | |
| 53 | ||
| 54 | <H3>Template Parameters</H3> | |
| 55 | ||
| 56 | <P> | |
| 57 | <TABLE border> | |
| 58 | <TR> | |
| 59 | <th>Parameter</th><th>Description</th><th>Default</th> | |
| 60 | </tr> | |
| 61 | ||
| 62 | <TR><TD><TT>EventVisitorList</TT></TD> | |
| 63 | <TD> | |
| 64 | A list of <a href="./EventVisitor.html">EventVisitor</a>'s created | |
| 65 | with <tt>std::pair</tt>. | |
| 66 | </TD> | |
| 67 | <TD><a href="./null_visitor.html"><tt>null_visitor</tt></a></TD> | |
| 68 | </TR> | |
| 69 | ||
| 70 | </table> | |
| 71 | ||
| 72 | <H3>Where Defined</H3> | |
| 73 | ||
| 74 | <P> | |
| 75 | <a href="../../../boost/graph/breadth_first_search.hpp"> | |
| 76 | <TT>boost/graph/breadth_first_search.hpp</TT></a> | |
| 77 | ||
| 78 | <h3>Member Functions</h3> | |
| 79 | ||
| 80 | This class implements all of the member functions required by <a | |
| 81 | href="./BFSVisitor.html">BFSVisitor</a>. In each function the | |
| 82 | appropriate event is dispatched to the <a | |
| 83 | href="./EventVisitor.html">EventVisitor</a> in the EventVisitorList. | |
| 84 | ||
| 85 | <h3>Non-Member Functions</h3> | |
| 86 | ||
| 87 | <table border> | |
| 88 | <tr> | |
| 89 | <th>Function</th><th>Description</th> | |
| 90 | </tr> | |
| 91 | ||
| 92 | <tr><td><tt> | |
| 93 | template <class EventVisitorList><br> | |
| 94 | bfs_visitor<EventVisitorList><br> | |
| 95 | make_bfs_visitor(EventVisitorList ev_list); | |
| 96 | </tt></td><td> | |
| 97 | Returns the event visitor list adapted to be a BFS visitor. | |
| 98 | </td></tr> | |
| 99 | ||
| 100 | </table> | |
| 101 | ||
| 102 | <h3>See Also</h3> | |
| 103 | ||
| 104 | <a href="./visitor_concepts.html">Visitor concepts</a> | |
| 105 | <p> | |
| 106 | The following are event visitors: <a | |
| 107 | href="./predecessor_recorder.html"><tt>predecessor_recorder</tt></a>, | |
| 108 | <a href="./distance_recorder.html"><tt>distance_recorder</tt></a>, | |
| 109 | <a href="./time_stamper.html"><tt>time_stamper</tt></a>, | |
| 110 | and <a href="./property_writer.html"><tt>property_writer</tt></a>. | |
| 111 | ||
| 112 | ||
| 113 | <br> | |
| 114 | <HR> | |
| 115 | <TABLE> | |
| 116 | <TR valign=top> | |
| 117 | <TD nowrap>Copyright © 2000-2001</TD><TD> | |
| 118 | <A HREF="http://www.boost.org/people/jeremy_siek.htm">Jeremy Siek</A>, | |
| 119 | Indiana University (<A | |
| 120 | HREF="mailto:jsiek@osl.iu.edu">jsiek@osl.iu.edu</A>)<br> | |
| 121 | <A HREF="http://www.boost.org/people/liequan_lee.htm">Lie-Quan Lee</A>, Indiana University (<A HREF="mailto:llee@cs.indiana.edu">llee@cs.indiana.edu</A>)<br> | |
| 122 | <A HREF="http://www.osl.iu.edu/~lums">Andrew Lumsdaine</A>, | |
| 123 | Indiana University (<A | |
| 124 | HREF="mailto:lums@osl.iu.edu">lums@osl.iu.edu</A>) | |
| 125 | </TD></TR></TABLE> | |
| 126 | ||
| 127 | </BODY> | |
| 128 | </HTML> |