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<h1>node.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">//==========================================================================</span>
<a name="l00002"></a>00002 <span class="comment">//</span>
<a name="l00003"></a>00003 <span class="comment">//   node.h</span>
<a name="l00004"></a>00004 <span class="comment">//</span>
<a name="l00005"></a>00005 <span class="comment">//==========================================================================</span>
<a name="l00006"></a>00006 <span class="comment">// $Id: node.h,v 1.20 2003/11/27 13:36:56 raitner Exp $</span>
<a name="l00007"></a>00007 
<a name="l00008"></a>00008 <span class="preprocessor">#ifndef GTL_NODE_H</span>
<a name="l00009"></a>00009 <span class="preprocessor"></span><span class="preprocessor">#define GTL_NODE_H</span>
<a name="l00010"></a>00010 <span class="preprocessor"></span>
<a name="l00011"></a>00011 <span class="preprocessor">#include &lt;GTL/GTL.h&gt;</span>
<a name="l00012"></a>00012 <span class="preprocessor">#include &lt;GTL/edge.h&gt;</span>
<a name="l00013"></a>00013 
<a name="l00014"></a>00014 <span class="preprocessor">#include &lt;list&gt;</span>
<a name="l00015"></a>00015 
<a name="l00016"></a>00016 __GTL_BEGIN_NAMESPACE
<a name="l00017"></a>00017 
<a name="l00018"></a>00018 <span class="comment">//--------------------------------------------------------------------------</span>
<a name="l00019"></a>00019 <span class="comment">//   For MSVC 5.0 node.h has to be included before {node,edge}_data.h.</span>
<a name="l00020"></a>00020 <span class="comment">//   So we only declare node_data here</span>
<a name="l00021"></a>00021 <span class="comment">//--------------------------------------------------------------------------</span>
<a name="l00022"></a>00022 
<a name="l00023"></a>00023 <span class="keyword">class </span>node_data;
<a name="l00024"></a>00024 
<a name="l00025"></a>00025 <span class="comment">//--------------------------------------------------------------------------</span>
<a name="l00026"></a>00026 <span class="comment">// The first alternative is correct. The second one is a workaround</span>
<a name="l00027"></a>00027 <span class="comment">// for compilers that don't support namespaces and use the SGI STL</span>
<a name="l00028"></a>00028 <span class="comment">// (i.e. gcc/egcs)</span>
<a name="l00029"></a>00029 <span class="comment">//--------------------------------------------------------------------------</span>
<a name="l00030"></a>00030 
<a name="l00031"></a>00031 <span class="preprocessor">#ifdef __GTL_USE_NAMESPACES</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span>
<a name="l00033"></a>00033 <span class="keyword">class </span><a class="code" href="a00020.html" title="A node in a graph.">node</a>;
<a name="l00034"></a>00034 <span class="keyword">typedef</span> std::iterator&lt;std::bidirectional_iterator_tag, edge&gt; bi_iter_edge;
<a name="l00035"></a>00035 <span class="keyword">typedef</span> std::iterator&lt;std::bidirectional_iterator_tag, node&gt; bi_iter_node;
<a name="l00036"></a>00036 
<a name="l00037"></a>00037 <span class="preprocessor">#else</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span>
<a name="l00039"></a>00039 <span class="keyword">class </span><a class="code" href="a00020.html" title="A node in a graph.">node</a>;
<a name="l00040"></a>00040 <span class="keyword">typedef</span> bidirectional_iterator&lt;edge,ptrdiff_t&gt; bi_iter_edge;
<a name="l00041"></a>00041 <span class="keyword">typedef</span> bidirectional_iterator&lt;node,ptrdiff_t&gt; bi_iter_node;
<a name="l00042"></a>00042 
<a name="l00043"></a>00043 <span class="preprocessor">#endif // __GTL_USE_NAMESPACES</span>
<a name="l00044"></a>00044 <span class="preprocessor"></span>
<a name="l00045"></a>00045 <span class="comment">//--------------------------------------------------------------------------</span>
<a name="l00046"></a>00046 <span class="comment">//   nodes</span>
<a name="l00047"></a>00047 <span class="comment">//--------------------------------------------------------------------------</span>
<a name="l00048"></a>00048 
<a name="l00052"></a><a class="code" href="a00020.html">00052</a> <span class="keyword">class </span>GTL_EXTERN <a class="code" href="a00020.html" title="A node in a graph.">node</a>
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054 <span class="keyword">public</span>:
<a name="l00068"></a>00068     <a class="code" href="a00020.html" title="A node in a graph.">node</a>();
<a name="l00069"></a>00069 
<a name="l00074"></a>00074     <span class="keywordtype">int</span> degree() <span class="keyword">const</span>;
<a name="l00075"></a>00075 
<a name="l00079"></a>00079     <span class="keywordtype">int</span> outdeg() <span class="keyword">const</span>;
<a name="l00080"></a>00080 
<a name="l00084"></a>00084     <span class="keywordtype">int</span> indeg() <span class="keyword">const</span>;
<a name="l00085"></a>00085 
<a name="l00089"></a>00089     <span class="keywordtype">int</span> id() <span class="keyword">const</span>;
<a name="l00090"></a>00090     
<a name="l00096"></a>00096     <span class="keyword">const</span> <a class="code" href="a00020.html" title="A node in a graph.">node</a>&amp; opposite(<a class="code" href="a00010.html" title="An edge in a graph.">edge</a> e) <span class="keyword">const</span>;
<a name="l00097"></a>00097     
<a name="l00101"></a>00101     list&lt;node&gt; opposites(<a class="code" href="a00010.html" title="An edge in a graph.">edge</a>) <span class="keyword">const</span>;
<a name="l00102"></a>00102 
<a name="l00110"></a>00110     <span class="keywordtype">bool</span> is_hidden () <span class="keyword">const</span>;
<a name="l00111"></a>00111 
<a name="l00118"></a>00118     <span class="keywordtype">int</span> excentricity() <span class="keyword">const</span>;
<a name="l00119"></a>00119     
<a name="l00120"></a>00120     <span class="comment">//================================================== Iterator types</span>
<a name="l00121"></a>00121 
<a name="l00125"></a>00125     <span class="keyword">typedef</span> list&lt;edge&gt;::const_iterator in_edges_iterator;
<a name="l00129"></a>00129     <span class="keyword">typedef</span> list&lt;edge&gt;::const_iterator out_edges_iterator;
<a name="l00130"></a>00130     
<a name="l00134"></a>00134     <span class="keyword">class </span>inout_edges_iterator;
<a name="l00135"></a>00135 
<a name="l00139"></a>00139     <span class="keyword">class </span>adj_nodes_iterator;
<a name="l00140"></a>00140 
<a name="l00144"></a>00144     <span class="keyword">class </span>adj_edges_iterator;
<a name="l00145"></a>00145 
<a name="l00146"></a>00146     <span class="comment">//================================================== Iterators</span>
<a name="l00147"></a>00147 
<a name="l00153"></a>00153     adj_nodes_iterator adj_nodes_begin() <span class="keyword">const</span>;
<a name="l00154"></a>00154 
<a name="l00160"></a>00160     adj_nodes_iterator adj_nodes_end() <span class="keyword">const</span>;
<a name="l00161"></a>00161 
<a name="l00167"></a>00167     adj_edges_iterator adj_edges_begin() <span class="keyword">const</span>;
<a name="l00168"></a>00168 
<a name="l00174"></a>00174     adj_edges_iterator adj_edges_end() <span class="keyword">const</span>;
<a name="l00175"></a>00175 
<a name="l00181"></a>00181     in_edges_iterator in_edges_begin() <span class="keyword">const</span>;
<a name="l00182"></a>00182 
<a name="l00188"></a>00188     in_edges_iterator in_edges_end() <span class="keyword">const</span>;
<a name="l00189"></a>00189 
<a name="l00195"></a>00195     out_edges_iterator out_edges_begin() <span class="keyword">const</span>;
<a name="l00196"></a>00196 
<a name="l00202"></a>00202     out_edges_iterator out_edges_end() <span class="keyword">const</span>;
<a name="l00203"></a>00203 
<a name="l00209"></a>00209     inout_edges_iterator inout_edges_begin() <span class="keyword">const</span>;
<a name="l00210"></a>00210 
<a name="l00216"></a>00216     inout_edges_iterator inout_edges_end() <span class="keyword">const</span>;
<a name="l00217"></a>00217 
<a name="l00218"></a>00218     <span class="comment">//================================================== Implementation</span>
<a name="l00219"></a>00219     
<a name="l00220"></a>00220 <span class="keyword">private</span>:
<a name="l00221"></a>00221     node_data *data;
<a name="l00222"></a>00222     
<a name="l00223"></a>00223     <span class="keywordtype">bool</span> is_directed() <span class="keyword">const</span>;
<a name="l00224"></a>00224     <span class="keywordtype">bool</span> is_undirected() <span class="keyword">const</span>;
<a name="l00225"></a>00225 
<a name="l00226"></a>00226     <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="a00014.html" title="A directed or undirected graph.">graph</a>;
<a name="l00227"></a>00227     <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="a00010.html" title="An edge in a graph.">edge</a>;
<a name="l00228"></a>00228     <span class="keyword">friend</span> <span class="keyword">class </span>adj_edges_iterator;
<a name="l00229"></a>00229 
<a name="l00230"></a>00230     GTL_EXTERN <span class="keyword">friend</span> <span class="keywordtype">bool</span> operator==(<a class="code" href="a00020.html" title="A node in a graph.">node</a>, <a class="code" href="a00020.html" title="A node in a graph.">node</a>);
<a name="l00231"></a>00231     GTL_EXTERN <span class="keyword">friend</span> <span class="keywordtype">bool</span> operator!=(<a class="code" href="a00020.html" title="A node in a graph.">node</a>, <a class="code" href="a00020.html" title="A node in a graph.">node</a>);
<a name="l00232"></a>00232     GTL_EXTERN <span class="keyword">friend</span> <span class="keywordtype">bool</span> operator&lt;(<a class="code" href="a00020.html" title="A node in a graph.">node</a>, <a class="code" href="a00020.html" title="A node in a graph.">node</a>);
<a name="l00233"></a>00233     GTL_EXTERN <span class="keyword">friend</span> ostream&amp; operator&lt;&lt; (ostream&amp; os, <span class="keyword">const</span> <a class="code" href="a00020.html" title="A node in a graph.">node</a>&amp; n);
<a name="l00234"></a>00234 };
<a name="l00235"></a>00235 
<a name="l00236"></a>00236 
<a name="l00240"></a>00240 <span class="keyword">class </span>GTL_EXTERN <a class="code" href="a00020.html" title="A node in a graph.">node</a>::adj_edges_iterator : <span class="keyword">public</span> bi_iter_edge
<a name="l00241"></a>00241 {
<a name="l00242"></a>00242 <span class="keyword">public</span>:
<a name="l00243"></a>00243         
<a name="l00244"></a>00244     <span class="comment">// constructor</span>
<a name="l00245"></a>00245     adj_edges_iterator();
<a name="l00246"></a>00246     adj_edges_iterator(<a class="code" href="a00020.html" title="A node in a graph.">node</a>, <span class="keywordtype">bool</span>);
<a name="l00247"></a>00247 
<a name="l00248"></a>00248     <span class="comment">// comparibility</span>
<a name="l00249"></a>00249     <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> adj_edges_iterator&amp;) <span class="keyword">const</span>;
<a name="l00250"></a>00250     <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> adj_edges_iterator&amp;) <span class="keyword">const</span>;
<a name="l00251"></a>00251 
<a name="l00252"></a>00252     <span class="comment">// operators</span>
<a name="l00253"></a>00253     adj_edges_iterator &amp;operator++();
<a name="l00254"></a>00254     adj_edges_iterator operator++(<span class="keywordtype">int</span>);
<a name="l00255"></a>00255     adj_edges_iterator &amp;operator--();
<a name="l00256"></a>00256     adj_edges_iterator operator--(<span class="keywordtype">int</span>);
<a name="l00257"></a>00257 
<a name="l00258"></a>00258     <span class="comment">// dereferencing</span>
<a name="l00259"></a>00259     <span class="keyword">const</span> <a class="code" href="a00010.html" title="An edge in a graph.">edge</a>&amp; operator*() <span class="keyword">const</span>;
<a name="l00260"></a>00260     <span class="keyword">const</span> <a class="code" href="a00010.html" title="An edge in a graph.">edge</a>* operator-&gt;() <span class="keyword">const</span>;
<a name="l00261"></a>00261 
<a name="l00262"></a>00262 <span class="keyword">private</span>:
<a name="l00263"></a>00263     in_edges_iterator akt_edge[2], last_edge[2], begin_edge[2];
<a name="l00264"></a>00264     <span class="keywordtype">int</span> inout;     <span class="comment">// in=0, out=1</span>
<a name="l00265"></a>00265     <span class="keywordtype">bool</span> directed; <span class="comment">// graph directed ??</span>
<a name="l00266"></a>00266 };
<a name="l00267"></a>00267     
<a name="l00271"></a>00271 <span class="keyword">class </span>GTL_EXTERN <a class="code" href="a00020.html" title="A node in a graph.">node</a>::inout_edges_iterator : <span class="keyword">public</span> bi_iter_edge
<a name="l00272"></a>00272 {
<a name="l00273"></a>00273 <span class="keyword">public</span>:
<a name="l00274"></a>00274 
<a name="l00275"></a>00275     <span class="comment">// constructor</span>
<a name="l00276"></a>00276     inout_edges_iterator();
<a name="l00277"></a>00277     inout_edges_iterator(<a class="code" href="a00020.html" title="A node in a graph.">node</a> n, <span class="keywordtype">bool</span> start);
<a name="l00278"></a>00278 
<a name="l00279"></a>00279     <span class="comment">// comparibility</span>
<a name="l00280"></a>00280     <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> inout_edges_iterator&amp;) <span class="keyword">const</span>;
<a name="l00281"></a>00281     <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> inout_edges_iterator&amp;) <span class="keyword">const</span>;
<a name="l00282"></a>00282 
<a name="l00283"></a>00283     <span class="comment">// operators</span>
<a name="l00284"></a>00284     inout_edges_iterator &amp;operator++();
<a name="l00285"></a>00285     inout_edges_iterator operator++(<span class="keywordtype">int</span>);
<a name="l00286"></a>00286     inout_edges_iterator &amp;operator--();
<a name="l00287"></a>00287     inout_edges_iterator operator--(<span class="keywordtype">int</span>);
<a name="l00288"></a>00288 
<a name="l00289"></a>00289     <span class="comment">// dereferencing</span>
<a name="l00290"></a>00290     <span class="keyword">const</span> <a class="code" href="a00010.html" title="An edge in a graph.">edge</a>&amp; operator*() <span class="keyword">const</span>;
<a name="l00291"></a>00291     <span class="keyword">const</span> <a class="code" href="a00010.html" title="An edge in a graph.">edge</a>* operator-&gt;() <span class="keyword">const</span>;
<a name="l00292"></a>00292         
<a name="l00293"></a>00293 <span class="keyword">private</span>:
<a name="l00294"></a>00294     in_edges_iterator akt_edge[2], last_edge, begin_edge;
<a name="l00295"></a>00295     <span class="keywordtype">int</span> inout;     <span class="comment">// in=0, out=1</span>
<a name="l00296"></a>00296 };
<a name="l00297"></a>00297 
<a name="l00301"></a>00301 <span class="keyword">class </span>GTL_EXTERN <a class="code" href="a00020.html" title="A node in a graph.">node</a>::adj_nodes_iterator : <span class="keyword">public</span> bi_iter_node
<a name="l00302"></a>00302 {
<a name="l00303"></a>00303 <span class="keyword">public</span>:
<a name="l00304"></a>00304 
<a name="l00305"></a>00305     <span class="comment">// constructor</span>
<a name="l00306"></a>00306     adj_nodes_iterator();
<a name="l00307"></a>00307     adj_nodes_iterator(<span class="keyword">const</span> <a class="code" href="a00020.html" title="A node in a graph.">node</a>&amp;, <span class="keywordtype">bool</span>);
<a name="l00308"></a>00308 
<a name="l00309"></a>00309     <span class="comment">// comparibility</span>
<a name="l00310"></a>00310     <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> adj_nodes_iterator&amp;) <span class="keyword">const</span>;
<a name="l00311"></a>00311     <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> adj_nodes_iterator&amp;) <span class="keyword">const</span>;
<a name="l00312"></a>00312 
<a name="l00313"></a>00313     <span class="comment">// operators</span>
<a name="l00314"></a>00314     adj_nodes_iterator &amp;operator++();
<a name="l00315"></a>00315     adj_nodes_iterator operator++(<span class="keywordtype">int</span>);
<a name="l00316"></a>00316     adj_nodes_iterator &amp;operator--();
<a name="l00317"></a>00317     adj_nodes_iterator operator--(<span class="keywordtype">int</span>);
<a name="l00318"></a>00318 
<a name="l00319"></a>00319     <span class="comment">// dereferencing</span>
<a name="l00320"></a>00320     <span class="keyword">const</span> <a class="code" href="a00020.html" title="A node in a graph.">node</a>&amp; operator*() <span class="keyword">const</span>;
<a name="l00321"></a>00321     <span class="keyword">const</span> <a class="code" href="a00020.html" title="A node in a graph.">node</a>* operator-&gt;() <span class="keyword">const</span>;
<a name="l00322"></a>00322 
<a name="l00323"></a>00323 <span class="keyword">private</span>:
<a name="l00324"></a>00324     adj_edges_iterator akt_edge;
<a name="l00325"></a>00325     <a class="code" href="a00020.html" title="A node in a graph.">node</a> int_node;
<a name="l00326"></a>00326 };
<a name="l00327"></a>00327 
<a name="l00328"></a>00328 
<a name="l00329"></a>00329 __GTL_END_NAMESPACE
<a name="l00330"></a>00330 
<a name="l00331"></a>00331 <span class="comment">//--------------------------------------------------------------------------</span>
<a name="l00332"></a>00332 <span class="comment">//   Iteration</span>
<a name="l00333"></a>00333 <span class="comment">//--------------------------------------------------------------------------</span>
<a name="l00334"></a>00334 
<a name="l00335"></a>00335 <span class="comment">// #define forall_adj_nodes(v,w)        GTL_FORALL(v,w,node::adj_nodes_iterator,adj_nodes_)</span>
<a name="l00336"></a>00336 <span class="preprocessor">#define forall_out_edges(e,v)   GTL_FORALL(e,v,node::out_edges_iterator,out_edges_)</span>
<a name="l00337"></a>00337 <span class="preprocessor"></span><span class="preprocessor">#define forall_in_edges(e,v)    GTL_FORALL(e,v,node::in_edges_iterator,in_edges_)</span>
<a name="l00338"></a>00338 <span class="preprocessor"></span><span class="preprocessor">#define forall_inout_edges(e,v) GTL_FORALL(e,v,node::inout_edges_iterator,inout_edges_)</span>
<a name="l00339"></a>00339 <span class="preprocessor"></span><span class="preprocessor">#define forall_adj_edges(e,v)   GTL_FORALL(e,v,node::adj_edges_iterator,adj_edges_)</span>
<a name="l00340"></a>00340 <span class="preprocessor"></span>    
<a name="l00341"></a>00341 <span class="preprocessor">#endif // GTL_NODE_H</span>
<a name="l00342"></a>00342 <span class="preprocessor"></span>
<a name="l00343"></a>00343 <span class="comment">//--------------------------------------------------------------------------</span>
<a name="l00344"></a>00344 <span class="comment">//   end of file</span>
<a name="l00345"></a>00345 <span class="comment">//--------------------------------------------------------------------------</span>
</pre></div>    <p class="links">
      <a href="http://www.uni-passau.de/">University of Passau</a>
      &nbsp;-&nbsp;
      <a href="http://www.fmi.uni-passau.de/">FMI</a>
      &nbsp;-&nbsp;
      <a href="http://www.fmi.uni-passau.de/fmi/lehrstuehle/brandenburg/">Theoretical
	Computer Science</a>
    </p>
  <div class="copyright">
      Design &copy; 2002, 2003 <a href="mailto:raitner@fmi.uni-passau.de">Marcus Raitner</a>,  University of Passau 
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