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<span id="sfml">Google OR-Tools 8.2</span>
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<h2>C++ Reference</h2>
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<li><a href="../cpp_algorithms/annotated.html">Algorithms</a></li>
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<li><a href="../cpp_sat/annotated.html">CP-SAT</a></li>
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<li><a href="../cpp_graph/annotated.html">Graph</a></li>
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<h1 style="color: #145A32;">C++ Reference: Graph</h1>
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<a href="io_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2010-2018 Google LLC</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// You may obtain a copy of the License at</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// See the License for the specific language governing permissions and</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// limitations under the License.</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  </div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// A collections of i/o utilities for the Graph classes in ./graph.h.</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#ifndef UTIL_GRAPH_IO_H_</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#define UTIL_GRAPH_IO_H_</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  </div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <algorithm></span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <memory></span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <numeric></span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <string></span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <vector></span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  </div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "absl/status/status.h"</span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include "absl/status/statusor.h"</span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "absl/strings/numbers.h"</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include "absl/strings/str_cat.h"</span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "absl/strings/str_format.h"</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "absl/strings/str_join.h"</span></div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "absl/strings/str_split.h"</span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include "ortools/base/filelineiter.h"</span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include "<a class="code" href="graph_8h.html">ortools/graph/graph.h</a>"</span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  </div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">namespace </span><a class="code" href="namespaceutil.html">util</a> {</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  </div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">// Returns a string representation of a graph.</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9"> 38</a></span> <span class="keyword">enum</span> <a class="code" href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9">GraphToStringFormat</a> {</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="comment">// One arc per line, eg. "3->1".</span></div>
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<div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9a59afa9bae775818b44690c5d14cdf8d0"> 40</a></span>  <a class="code" href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9a59afa9bae775818b44690c5d14cdf8d0">PRINT_GRAPH_ARCS</a>,</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  </div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="comment">// One space-separated adjacency list per line, eg. "3: 5 1 3 1".</span></div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">// Nodes with no outgoing arc get an empty list.</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9ac932364714f74e3ca75990c8126019a1"> 44</a></span>  <a class="code" href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9ac932364714f74e3ca75990c8126019a1">PRINT_GRAPH_ADJACENCY_LISTS</a>,</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  </div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="comment">// Ditto, but the adjacency lists are sorted.</span></div>
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<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9ada36744a3f529ceb03e7c1faa842854d"> 47</a></span>  <a class="code" href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9ada36744a3f529ceb03e7c1faa842854d">PRINT_GRAPH_ADJACENCY_LISTS_SORTED</a>,</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> };</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">template</span> <<span class="keyword">class</span> Graph></div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> std::string <a class="code" href="namespaceutil.html#a372b5c94ec5d30f923449516ebc2a963">GraphToString</a>(<span class="keyword">const</span> <a class="code" href="namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478">Graph</a>& graph, <a class="code" href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9">GraphToStringFormat</a> format);</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  </div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment">// Read a graph file in the simple ".g" format: the file should be a text file</span></div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment">// containing only space-separated integers, whose first line is:</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment">// <num nodes> <num edges> [<num_colors> <index of first node with color #1></span></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment">// <index of first node with color #2> ...]</span></div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment">// and whose subsequent lines represent edges if "directed" is false, or arcs if</span></div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment">// "directed" is true:</span></div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment">// <node1> <node2>.</span></div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment">// This returns a newly created graph upon success, which the user needs to take</span></div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment">// ownership of, or a failure status. See absl/status/statusor.h.</span></div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment">// If "num_nodes_with_color_or_null" is not nullptr, it will be filled with the</span></div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment">// color information: num_nodes_with_color_or_null[i] will be the number of</span></div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment">// nodes with color #i. Furthermore, nodes are sorted by color.</span></div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment">// Examples:</span></div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment">// // Simply crash if the graph isn't successfully read from the file.</span></div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment">// typedef StaticGraph<> MyGraph; // This is just an example.</span></div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment">// std::unique_ptr<MyGraph> my_graph(</span></div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment">// ReadGraphFile<MyGraph>("graph.g", /*directed=*/ false).ValueOrDie());</span></div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment">// // More complicated error handling.</span></div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment">// absl::StatusOr<MyGraph*> error_or_graph =</span></div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment">// ReadGraphFile<MyGraph>("graph.g", /*directed=*/ false);</span></div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment">// if (!error_or_graph.ok()) {</span></div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment">// LOG(ERROR) << "Error: " << error_or_graph.status().error_message();</span></div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment">// } else {</span></div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment">// std::unique_ptr<MyGraph> my_graph(error_or_graph.ValueOrDie());</span></div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment">// ...</span></div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment">// }</span></div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="keyword">template</span> <<span class="keyword">class</span> Graph></div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> absl::StatusOr<Graph*> <a class="code" href="namespaceutil.html#ac1f20692bcd36ed6d01b970af9eb2972">ReadGraphFile</a>(</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keyword">const</span> std::string& filename, <span class="keywordtype">bool</span> directed,</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  std::vector<int>* num_nodes_with_color_or_null);</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  </div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment">// Writes a graph to the ".g" file format described above. If "directed" is</span></div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment">// true, all arcs are written to the file. If it is false, the graph is expected</span></div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment">// to be undirected (i.e. the number of arcs a->b is equal to the number of arcs</span></div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment">// b->a for all nodes a,b); and only the arcs a->b where a<=b are written. Note</span></div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment">// however that in this case, the symmetry of the graph is not fully checked</span></div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment">// (only the parity of the number of non-self arcs is).</span></div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment">// "num_nodes_with_color" is optional. If it is not empty, then the color</span></div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment">// information will be written to the header of the .g file. See ReadGraphFile.</span></div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment">// This method is the reverse of ReadGraphFile (with the same value for</span></div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment">// "directed").</span></div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">template</span> <<span class="keyword">class</span> Graph></div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> absl::Status <a class="code" href="namespaceutil.html#a45fca0c4762006176ad5622ec40dea9c">WriteGraphToFile</a>(<span class="keyword">const</span> <a class="code" href="namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478">Graph</a>& graph, <span class="keyword">const</span> std::string& filename,</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordtype">bool</span> directed,</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keyword">const</span> std::vector<int>& num_nodes_with_color);</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  </div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment">// Implementations of the templated methods.</span></div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  </div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="keyword">template</span> <<span class="keyword">class</span> Graph></div>
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<div class="line"><a name="l00107"></a><span class="lineno"><a class="line" href="namespaceutil.html#a372b5c94ec5d30f923449516ebc2a963"> 107</a></span> std::string <a class="code" href="namespaceutil.html#a372b5c94ec5d30f923449516ebc2a963">GraphToString</a>(<span class="keyword">const</span> <a class="code" href="classutil_1_1_list_graph.html">Graph</a>& graph, <a class="code" href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9">GraphToStringFormat</a> format) {</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  std::string out;</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  std::vector<typename Graph::NodeIndex> adj;</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">typename</span> <a class="code" href="classutil_1_1_base_graph.html#aec05ff3d270a5f888e1623c2a99ff2aa">Graph::NodeIndex</a> node : graph.<a class="code" href="classutil_1_1_base_graph.html#a8a40f2c75615a26ba71e94dd7d42f481">AllNodes</a>()) {</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">if</span> (format == <a class="code" href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9a59afa9bae775818b44690c5d14cdf8d0">PRINT_GRAPH_ARCS</a>) {</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">typename</span> <a class="code" href="classutil_1_1_base_graph.html#a92531459eff09455cfa63976f5024906">Graph::ArcIndex</a> arc : graph.<a class="code" href="classutil_1_1_list_graph.html#ad7db584fc1fe14ce9296131fda625994">OutgoingArcs</a>(node)) {</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">if</span> (!out.empty()) out += <span class="charliteral">'\n'</span>;</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  absl::StrAppend(&out, node, <span class="stringliteral">"->"</span>, graph.<a class="code" href="classutil_1_1_list_graph.html#aceb0938bcb2e8e5f37986d4cf8e3a955">Head</a>(arc));</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  }</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  } <span class="keywordflow">else</span> { <span class="comment">// PRINT_GRAPH_ADJACENCY_LISTS[_SORTED]</span></div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  adj.clear();</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">typename</span> <a class="code" href="classutil_1_1_base_graph.html#a92531459eff09455cfa63976f5024906">Graph::ArcIndex</a> arc : graph.<a class="code" href="classutil_1_1_list_graph.html#ad7db584fc1fe14ce9296131fda625994">OutgoingArcs</a>(node)) {</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  adj.push_back(graph.<a class="code" href="classutil_1_1_list_graph.html#aceb0938bcb2e8e5f37986d4cf8e3a955">Head</a>(arc));</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  }</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordflow">if</span> (format == <a class="code" href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9ada36744a3f529ceb03e7c1faa842854d">PRINT_GRAPH_ADJACENCY_LISTS_SORTED</a>) {</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  std::sort(adj.begin(), adj.end());</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  }</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">if</span> (node != 0) out += <span class="charliteral">'\n'</span>;</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  absl::StrAppend(&out, node, <span class="stringliteral">": "</span>, absl::StrJoin(adj, <span class="stringliteral">" "</span>));</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  }</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  }</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">return</span> out;</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> }</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  </div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="keyword">template</span> <<span class="keyword">class</span> Graph></div>
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<div class="line"><a name="l00132"></a><span class="lineno"><a class="line" href="namespaceutil.html#ac1f20692bcd36ed6d01b970af9eb2972"> 132</a></span> absl::StatusOr<Graph*> <a class="code" href="namespaceutil.html#ac1f20692bcd36ed6d01b970af9eb2972">ReadGraphFile</a>(</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keyword">const</span> std::string& filename, <span class="keywordtype">bool</span> directed,</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  std::vector<int>* num_nodes_with_color_or_null) {</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  std::unique_ptr<Graph> graph;</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  int64 num_nodes = -1;</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  int64 num_expected_lines = -1;</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  int64 num_lines_read = 0;</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> std::string& line : FileLines(filename)) {</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  ++num_lines_read;</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordflow">if</span> (num_lines_read == 1) {</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  std::vector<int64> header_ints;</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="comment">// if (!SplitStringAndParse(line, " ", &strings::safe_strto64,</span></div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="comment">// &header_ints) ||</span></div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="comment">// header_ints.size() < 2 || header_ints[0] < 0 || header_ints[1] < 0)</span></div>
|
|
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="comment">// {</span></div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="comment">// return absl::Status(</span></div>
|
|
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="comment">// absl::StatusCode::kInvalidArgument,</span></div>
|
|
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="comment">// absl::StrCat("First line of '", filename,</span></div>
|
|
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="comment">// "' should be at least two nonnegative integers."));</span></div>
|
|
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="comment">// }</span></div>
|
|
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  num_nodes = header_ints[0];</div>
|
|
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  num_expected_lines = header_ints[1];</div>
|
|
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">if</span> (num_nodes_with_color_or_null != <span class="keyword">nullptr</span>) {</div>
|
|
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  num_nodes_with_color_or_null->clear();</div>
|
|
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">if</span> (header_ints.size() == 2) {</div>
|
|
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="comment">// No coloring: all the nodes have the same color.</span></div>
|
|
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  num_nodes_with_color_or_null->push_back(num_nodes);</div>
|
|
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_colors = header_ints[2];</div>
|
|
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">if</span> (header_ints.size() != num_colors + 2) {</div>
|
|
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">return</span> absl::Status(</div>
|
|
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  absl::StatusCode::kInvalidArgument,</div>
|
|
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  absl::StrCat(</div>
|
|
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="stringliteral">"There should be num_colors-1 color cardinalities in the"</span></div>
|
|
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="stringliteral">" header of '"</span>,</div>
|
|
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  filename, <span class="stringliteral">"' (where num_colors="</span>, num_colors,</div>
|
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="stringliteral">"): the last color cardinality should be"</span>, <span class="stringliteral">" skipped."</span>));</div>
|
|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  }</div>
|
|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  num_nodes_with_color_or_null->reserve(num_colors);</div>
|
|
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordtype">int</span> num_nodes_left = num_nodes;</div>
|
|
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 3; i < header_ints.size(); ++i) {</div>
|
|
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  num_nodes_with_color_or_null->push_back(header_ints[i]);</div>
|
|
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  num_nodes_left -= header_ints[i];</div>
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">if</span> (header_ints[i] <= 0 || num_nodes_left <= 0) {</div>
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keywordflow">return</span> absl::Status(</div>
|
|
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  absl::StatusCode::kInvalidArgument,</div>
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  absl::StrCat(</div>
|
|
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="stringliteral">"The color cardinalities in the header of '"</span>, filename,</div>
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="stringliteral">" should always be >0 and add up to less than the"</span></div>
|
|
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="stringliteral">" total number of nodes."</span>));</div>
|
|
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  }</div>
|
|
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  }</div>
|
|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  num_nodes_with_color_or_null->push_back(num_nodes_left);</div>
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  }</div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  }</div>
|
|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keyword">const</span> int64 num_arcs = (directed ? 1 : 2) * num_expected_lines;</div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  graph.reset(<span class="keyword">new</span> <a class="code" href="namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478">Graph</a>(num_nodes, num_arcs));</div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  }</div>
|
|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  int64_t node1 = -1;</div>
|
|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  int64_t node2 = -1;</div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordflow">if</span> (sscanf(line.c_str(), <span class="stringliteral">"%ld %ld"</span>, &node1, &node2) != 2 || node1 < 0 ||</div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  node2 < 0 || node1 >= num_nodes || node2 >= num_nodes) {</div>
|
|
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordflow">return</span> absl::Status(</div>
|
|
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  absl::StatusCode::kInvalidArgument,</div>
|
|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  absl::StrCat(<span class="stringliteral">"In '"</span>, filename, <span class="stringliteral">"', line "</span>, num_lines_read,</div>
|
|
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="stringliteral">": Expected two"</span>, <span class="stringliteral">" integers in the range [0, "</span>,</div>
|
|
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  num_nodes, <span class="stringliteral">")."</span>));</div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  }</div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="comment">// We don't add superfluous arcs to the graph, but we still keep reading</span></div>
|
|
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="comment">// the file, to get better error messages: we want to know the actual</span></div>
|
|
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="comment">// number of lines, and also want to check the validity of the superfluous</span></div>
|
|
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="comment">// arcs (i.e. that their src/dst nodes are ok).</span></div>
|
|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordflow">if</span> (num_lines_read > num_expected_lines + 1) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  graph->AddArc(node1, node2);</div>
|
|
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">if</span> (!directed && node1 != node2) graph->AddArc(node2, node1);</div>
|
|
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  }</div>
|
|
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordflow">if</span> (num_lines_read == 0) {</div>
|
|
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">return</span> absl::Status(absl::StatusCode::kInvalidArgument,</div>
|
|
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="stringliteral">"Unknown or empty file"</span>);</div>
|
|
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  }</div>
|
|
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordflow">if</span> (num_lines_read != num_expected_lines + 1) {</div>
|
|
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keywordflow">return</span> absl::Status(absl::StatusCode::kInvalidArgument,</div>
|
|
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  absl::StrCat(<span class="stringliteral">"The number of arcs/edges in '"</span>, filename,</div>
|
|
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="stringliteral">"' ("</span>, num_lines_read - 1,</div>
|
|
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="stringliteral">" does not match the value announced in"</span>,</div>
|
|
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="stringliteral">" the header ("</span>, num_expected_lines, <span class="stringliteral">")"</span>));</div>
|
|
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  }</div>
|
|
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  graph->Build();</div>
|
|
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordflow">return</span> graph.release();</div>
|
|
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> }</div>
|
|
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  </div>
|
|
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> <span class="keyword">template</span> <<span class="keyword">class</span> Graph></div>
|
|
<div class="line"><a name="l00225"></a><span class="lineno"><a class="line" href="namespaceutil.html#a45fca0c4762006176ad5622ec40dea9c"> 225</a></span> absl::Status <a class="code" href="namespaceutil.html#a45fca0c4762006176ad5622ec40dea9c">WriteGraphToFile</a>(<span class="keyword">const</span> <a class="code" href="classutil_1_1_list_graph.html">Graph</a>& graph, <span class="keyword">const</span> std::string& filename,</div>
|
|
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordtype">bool</span> directed,</div>
|
|
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keyword">const</span> std::vector<int>& num_nodes_with_color) {</div>
|
|
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  FILE* f = fopen(filename.c_str(), <span class="stringliteral">"w"</span>);</div>
|
|
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordflow">if</span> (f == <span class="keyword">nullptr</span>) {</div>
|
|
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keywordflow">return</span> absl::Status(absl::StatusCode::kInvalidArgument,</div>
|
|
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="stringliteral">"Could not open file: '"</span> + filename + <span class="stringliteral">"'"</span>);</div>
|
|
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  }</div>
|
|
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="comment">// In undirected mode, we must count the self-arcs separately. All other arcs</span></div>
|
|
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="comment">// should be duplicated.</span></div>
|
|
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordtype">int</span> num_self_arcs = 0;</div>
|
|
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keywordflow">if</span> (!directed) {</div>
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<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">typename</span> <a class="code" href="classutil_1_1_base_graph.html#aec05ff3d270a5f888e1623c2a99ff2aa">Graph::NodeIndex</a> node : graph.<a class="code" href="classutil_1_1_base_graph.html#a8a40f2c75615a26ba71e94dd7d42f481">AllNodes</a>()) {</div>
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<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">typename</span> <a class="code" href="classutil_1_1_base_graph.html#a92531459eff09455cfa63976f5024906">Graph::ArcIndex</a> arc : graph.<a class="code" href="classutil_1_1_list_graph.html#ad7db584fc1fe14ce9296131fda625994">OutgoingArcs</a>(node)) {</div>
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<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">if</span> (graph.<a class="code" href="classutil_1_1_list_graph.html#aceb0938bcb2e8e5f37986d4cf8e3a955">Head</a>(arc) == node) ++num_self_arcs;</div>
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<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  }</div>
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<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  }</div>
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<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordflow">if</span> ((graph.<a class="code" href="classutil_1_1_base_graph.html#a4d3fc55a2fe209a908470199437cec9a">num_arcs</a>() - num_self_arcs) % 2 != 0) {</div>
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<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  fclose(f);</div>
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<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordflow">return</span> absl::Status(absl::StatusCode::kInvalidArgument,</div>
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<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="stringliteral">"WriteGraphToFile() called with directed=false"</span></div>
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<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="stringliteral">" and with a graph with an odd number of (non-self)"</span></div>
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<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="stringliteral">" arcs!"</span>);</div>
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<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  }</div>
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<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  }</div>
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<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  absl::FPrintF(</div>
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<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  f, <span class="stringliteral">"%d %d"</span>, <span class="keyword">static_cast<</span>int64<span class="keyword">></span>(graph.<a class="code" href="classutil_1_1_base_graph.html#a6a2df5042167b234f6dc3aed4acfa6c9">num_nodes</a>()),</div>
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<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keyword">static_cast<</span>int64<span class="keyword">></span>(directed ? graph.<a class="code" href="classutil_1_1_base_graph.html#a4d3fc55a2fe209a908470199437cec9a">num_arcs</a>()</div>
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<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  : (graph.<a class="code" href="classutil_1_1_base_graph.html#a4d3fc55a2fe209a908470199437cec9a">num_arcs</a>() + num_self_arcs) / 2));</div>
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<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordflow">if</span> (!num_nodes_with_color.empty()) {</div>
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<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="keywordflow">if</span> (std::accumulate(num_nodes_with_color.begin(),</div>
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<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  num_nodes_with_color.end(), 0) != graph.<a class="code" href="classutil_1_1_base_graph.html#a6a2df5042167b234f6dc3aed4acfa6c9">num_nodes</a>() ||</div>
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<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  *std::min_element(num_nodes_with_color.begin(),</div>
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<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  num_nodes_with_color.end()) <= 0) {</div>
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<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="keywordflow">return</span> absl::Status(absl::StatusCode::kInvalidArgument,</div>
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<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="stringliteral">"WriteGraphToFile() called with invalid coloring."</span>);</div>
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<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  }</div>
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<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  fprintf(f, <span class="stringliteral">" %lu"</span>, num_nodes_with_color.size());</div>
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<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < num_nodes_with_color.size() - 1; ++i) {</div>
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<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  absl::FPrintF(f, <span class="stringliteral">" %d"</span>, <span class="keyword">static_cast<</span>int64<span class="keyword">></span>(num_nodes_with_color[i]));</div>
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<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  }</div>
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<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  }</div>
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<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  fprintf(f, <span class="stringliteral">"\n"</span>);</div>
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<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  </div>
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<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">typename</span> <a class="code" href="classutil_1_1_base_graph.html#aec05ff3d270a5f888e1623c2a99ff2aa">Graph::NodeIndex</a> node : graph.<a class="code" href="classutil_1_1_base_graph.html#a8a40f2c75615a26ba71e94dd7d42f481">AllNodes</a>()) {</div>
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<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">typename</span> <a class="code" href="classutil_1_1_base_graph.html#a92531459eff09455cfa63976f5024906">Graph::ArcIndex</a> arc : graph.<a class="code" href="classutil_1_1_list_graph.html#ad7db584fc1fe14ce9296131fda625994">OutgoingArcs</a>(node)) {</div>
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<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="keyword">const</span> <span class="keyword">typename</span> <a class="code" href="classutil_1_1_base_graph.html#aec05ff3d270a5f888e1623c2a99ff2aa">Graph::NodeIndex</a> head = graph.<a class="code" href="classutil_1_1_list_graph.html#aceb0938bcb2e8e5f37986d4cf8e3a955">Head</a>(arc);</div>
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<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keywordflow">if</span> (directed || head >= node) {</div>
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<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  absl::FPrintF(f, <span class="stringliteral">"%d %d\n"</span>, <span class="keyword">static_cast<</span>int64<span class="keyword">></span>(node),</div>
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<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keyword">static_cast<</span>uint64<span class="keyword">></span>(head));</div>
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<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  }</div>
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<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  }</div>
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<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  }</div>
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<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <span class="keywordflow">if</span> (fclose(f) != 0) {</div>
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|
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keywordflow">return</span> absl::Status(absl::StatusCode::kInternal,</div>
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<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="stringliteral">"Could not close file '"</span> + filename + <span class="stringliteral">"'"</span>);</div>
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|
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  }</div>
|
|
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  return ::absl::OkStatus();</div>
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|
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> }</div>
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<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  </div>
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<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> } <span class="comment">// namespace util</span></div>
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<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  </div>
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<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="preprocessor">#endif </span><span class="comment">// UTIL_GRAPH_IO_H_</span></div>
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<div class="ttc" id="aclassutil_1_1_base_graph_html_a4d3fc55a2fe209a908470199437cec9a"><div class="ttname"><a href="classutil_1_1_base_graph.html#a4d3fc55a2fe209a908470199437cec9a">util::BaseGraph::num_arcs</a></div><div class="ttdeci">ArcIndexType num_arcs() const</div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l00204">graph.h:204</a></div></div>
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<div class="ttc" id="aclassutil_1_1_base_graph_html_a6a2df5042167b234f6dc3aed4acfa6c9"><div class="ttname"><a href="classutil_1_1_base_graph.html#a6a2df5042167b234f6dc3aed4acfa6c9">util::BaseGraph::num_nodes</a></div><div class="ttdeci">NodeIndexType num_nodes() const</div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l00201">graph.h:201</a></div></div>
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<div class="ttc" id="aclassutil_1_1_base_graph_html_a8a40f2c75615a26ba71e94dd7d42f481"><div class="ttname"><a href="classutil_1_1_base_graph.html#a8a40f2c75615a26ba71e94dd7d42f481">util::BaseGraph::AllNodes</a></div><div class="ttdeci">IntegerRange< NodeIndex > AllNodes() const</div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l00929">graph.h:929</a></div></div>
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<div class="ttc" id="aclassutil_1_1_base_graph_html_a92531459eff09455cfa63976f5024906"><div class="ttname"><a href="classutil_1_1_base_graph.html#a92531459eff09455cfa63976f5024906">util::BaseGraph< int32, int32, false >::ArcIndex</a></div><div class="ttdeci">int32 ArcIndex</div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l00190">graph.h:190</a></div></div>
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<div class="ttc" id="aclassutil_1_1_base_graph_html_aec05ff3d270a5f888e1623c2a99ff2aa"><div class="ttname"><a href="classutil_1_1_base_graph.html#aec05ff3d270a5f888e1623c2a99ff2aa">util::BaseGraph< int32, int32, false >::NodeIndex</a></div><div class="ttdeci">int32 NodeIndex</div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l00189">graph.h:189</a></div></div>
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<div class="ttc" id="aclassutil_1_1_list_graph_html"><div class="ttname"><a href="classutil_1_1_list_graph.html">util::ListGraph</a></div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l00297">graph.h:297</a></div></div>
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<div class="ttc" id="aclassutil_1_1_list_graph_html_aceb0938bcb2e8e5f37986d4cf8e3a955"><div class="ttname"><a href="classutil_1_1_list_graph.html#aceb0938bcb2e8e5f37986d4cf8e3a955">util::ListGraph::Head</a></div><div class="ttdeci">NodeIndexType Head(ArcIndexType arc) const</div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l01111">graph.h:1111</a></div></div>
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<div class="ttc" id="aclassutil_1_1_list_graph_html_ad7db584fc1fe14ce9296131fda625994"><div class="ttname"><a href="classutil_1_1_list_graph.html#ad7db584fc1fe14ce9296131fda625994">util::ListGraph::OutgoingArcs</a></div><div class="ttdeci">BeginEndWrapper< OutgoingArcIterator > OutgoingArcs(NodeIndexType node) const</div></div>
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<div class="ttc" id="agraph_8h_html"><div class="ttname"><a href="graph_8h.html">graph.h</a></div></div>
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<div class="ttc" id="anamespaceutil_html"><div class="ttname"><a href="namespaceutil.html">util</a></div><div class="ttdef"><b>Definition:</b> <a href="connected__components_8h_source.html#l00056">connected_components.h:56</a></div></div>
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<div class="ttc" id="anamespaceutil_html_a2d1e9c029dfaa2e8dfd58862836440b9"><div class="ttname"><a href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9">util::GraphToStringFormat</a></div><div class="ttdeci">GraphToStringFormat</div><div class="ttdef"><b>Definition:</b> <a href="io_8h_source.html#l00038">io.h:38</a></div></div>
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<div class="ttc" id="anamespaceutil_html_a2d1e9c029dfaa2e8dfd58862836440b9a59afa9bae775818b44690c5d14cdf8d0"><div class="ttname"><a href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9a59afa9bae775818b44690c5d14cdf8d0">util::PRINT_GRAPH_ARCS</a></div><div class="ttdeci">@ PRINT_GRAPH_ARCS</div><div class="ttdef"><b>Definition:</b> <a href="io_8h_source.html#l00040">io.h:40</a></div></div>
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<div class="ttc" id="anamespaceutil_html_a2d1e9c029dfaa2e8dfd58862836440b9ac932364714f74e3ca75990c8126019a1"><div class="ttname"><a href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9ac932364714f74e3ca75990c8126019a1">util::PRINT_GRAPH_ADJACENCY_LISTS</a></div><div class="ttdeci">@ PRINT_GRAPH_ADJACENCY_LISTS</div><div class="ttdef"><b>Definition:</b> <a href="io_8h_source.html#l00044">io.h:44</a></div></div>
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<div class="ttc" id="anamespaceutil_html_a2d1e9c029dfaa2e8dfd58862836440b9ada36744a3f529ceb03e7c1faa842854d"><div class="ttname"><a href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9ada36744a3f529ceb03e7c1faa842854d">util::PRINT_GRAPH_ADJACENCY_LISTS_SORTED</a></div><div class="ttdeci">@ PRINT_GRAPH_ADJACENCY_LISTS_SORTED</div><div class="ttdef"><b>Definition:</b> <a href="io_8h_source.html#l00047">io.h:47</a></div></div>
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<div class="ttc" id="anamespaceutil_html_a2f76166dbe0c4055a1f256235ad00478"><div class="ttname"><a href="namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478">util::Graph</a></div><div class="ttdeci">ListGraph Graph</div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l02354">graph.h:2354</a></div></div>
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<div class="ttc" id="anamespaceutil_html_a372b5c94ec5d30f923449516ebc2a963"><div class="ttname"><a href="namespaceutil.html#a372b5c94ec5d30f923449516ebc2a963">util::GraphToString</a></div><div class="ttdeci">std::string GraphToString(const Graph &graph, GraphToStringFormat format)</div><div class="ttdef"><b>Definition:</b> <a href="io_8h_source.html#l00107">io.h:107</a></div></div>
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<div class="ttc" id="anamespaceutil_html_a45fca0c4762006176ad5622ec40dea9c"><div class="ttname"><a href="namespaceutil.html#a45fca0c4762006176ad5622ec40dea9c">util::WriteGraphToFile</a></div><div class="ttdeci">absl::Status WriteGraphToFile(const Graph &graph, const std::string &filename, bool directed, const std::vector< int > &num_nodes_with_color)</div><div class="ttdef"><b>Definition:</b> <a href="io_8h_source.html#l00225">io.h:225</a></div></div>
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<div class="ttc" id="anamespaceutil_html_ac1f20692bcd36ed6d01b970af9eb2972"><div class="ttname"><a href="namespaceutil.html#ac1f20692bcd36ed6d01b970af9eb2972">util::ReadGraphFile</a></div><div class="ttdeci">absl::StatusOr< Graph * > ReadGraphFile(const std::string &filename, bool directed, std::vector< int > *num_nodes_with_color_or_null)</div><div class="ttdef"><b>Definition:</b> <a href="io_8h_source.html#l00132">io.h:132</a></div></div>
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