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<div class="headertitle"><div class="title">enums.h</div></div>
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<a href="enums_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">// Copyright 2010-2021 Google LLC</span></div>
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<div class="line"><a id="l00002" 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 id="l00003" 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 id="l00004" 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 id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment">//</span></div>
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<div class="line"><a id="l00006" 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 id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">//</span></div>
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<div class="line"><a id="l00008" 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 id="l00009" 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 id="l00010" 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 id="l00011" 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 id="l00012" 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 id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment">// The MathOpt C++ API defines enums that are used in parameters and results and</span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment">// that corresponds to Proto generated enums.</span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment">//</span></div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment">// The tools in this header make sure the C++ enums provide the following</span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment">// features:</span></div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="comment">// * enumerating all enum values</span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="comment">// * bidirectional string conversion</span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="comment">// * operator<< stream support</span></div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="comment">// * bidirectional proto generated enum conversion</span></div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="comment">//</span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="comment">// Example declaration:</span></div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="comment">//</span></div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="comment">// my_file.proto:</span></div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="comment">// enum MyEnumProto {</span></div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="comment">// MY_ENUM_UNSPECIFIED = 0;</span></div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="comment">// MY_ENUM_FIRST_VALUE = 1;</span></div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="comment">// MY_ENUM_SECOND_VALUE = 2;</span></div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="comment">// }</span></div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="comment">//</span></div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="comment">// my_file.h:</span></div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="comment">// enum class MyEnum {</span></div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="comment">// kFirstValue = MY_ENUM_FIRST_VALUE,</span></div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="comment">// kSecondValue = MY_ENUM_SECOND_VALUE,</span></div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="comment">// };</span></div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="comment">//</span></div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="comment">// MATH_OPT_DEFINE_ENUM(MyEnum, MY_ENUM_UNSPECIFIED);</span></div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="comment">//</span></div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="comment">// my_file.cc:</span></div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="comment">// std::optional<absl::string_view></span></div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span><span class="comment">// Enum<MyEnum>::ToOptString(MyEnum value) {</span></div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="comment">// switch (value) {</span></div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span><span class="comment">// case MyEnum::kFirstValue:</span></div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span><span class="comment">// return "first_value";</span></div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span><span class="comment">// case MyEnum::kSecondValue:</span></div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span><span class="comment">// return "second_value";</span></div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span><span class="comment">// }</span></div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span><span class="comment">// return std::nullopt;</span></div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="comment">// }</span></div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="comment">//</span></div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="comment">// absl::Span<const MyEnum> Enum<MyEnum>::AllValues() {</span></div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="comment">// static constexpr MyEnum kMyEnumValues[] = {MyEnum::kFirstValue,</span></div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span><span class="comment">// MyEnum::kSecondValue};</span></div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span><span class="comment">// return absl::MakeConstSpan(kMyEnumValues);</span></div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span><span class="comment">// }</span></div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span><span class="comment">//</span></div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span><span class="comment">// my_file_test.cc:</span></div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span><span class="comment">// #include "ortools/math_opt/cpp/enums_testing.h"</span></div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span><span class="comment">// ...</span></div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span><span class="comment">// INSTANTIATE_TYPED_TEST_SUITE_P(MyEnum, EnumTest, MyEnum);</span></div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span><span class="comment">//</span></div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span><span class="comment">// Once this is done, the following functions are available:</span></div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span><span class="comment">// * absl::Span<MyEnum> Enum<MyEnum>::AllValues()</span></div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span><span class="comment">// * optional<MyEnum> EnumFromString<MyEnum>(string_view)</span></div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span><span class="comment">// * string_view EnumToString(MyEnum)</span></div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span><span class="comment">// * optional<string_view> EnumToOptString(MyEnum)</span></div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span><span class="comment">// * optional<MyEnum> EnumFromProto(MyEnumProto)</span></div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span><span class="comment">// * MyEnumProto EnumToProto(optional<MyEnum>)</span></div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span><span class="comment">// * MyEnumProto EnumToProto(MyEnum)</span></div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span><span class="comment">// * operator<<(MyEnum)</span></div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span><span class="comment">// * operator<<(std::optional<MyEnum>)</span></div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span><span class="comment">//</span></div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span><span class="comment">// See examples of usage in the Enum struct documentation below.</span></div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span><span class="preprocessor">#ifndef OR_TOOLS_MATH_OPT_CPP_ENUMS_H_</span></div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span><span class="preprocessor">#define OR_TOOLS_MATH_OPT_CPP_ENUMS_H_</span></div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> </div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span><span class="preprocessor">#include <optional></span></div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span><span class="preprocessor">#include <type_traits></span></div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> </div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span><span class="preprocessor">#include "absl/strings/string_view.h"</span></div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span><span class="preprocessor">#include "absl/types/span.h"</span></div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span><span class="preprocessor">#include "<a class="code" href="base_2logging_8h.html">ortools/base/logging.h</a>"</span></div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceoperations__research_1_1math__opt.html">operations_research::math_opt</a> {</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> </div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span><span class="comment">// This template is specialized for each enum in the C++ API.</span></div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span><span class="comment">//</span></div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span><span class="comment">// It provides a standard way to query properties of those enums and it is used</span></div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span><span class="comment">// by some global functions below to implement conversion from/to string or</span></div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span><span class="comment">// proto enum.</span></div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span><span class="comment">//</span></div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span><span class="comment">// Usage example:</span></div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span><span class="comment">//</span></div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span><span class="comment">// // Iterating on all enum values.</span></div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span><span class="comment">// for (const auto solver_type : Enum<SolverType>::AllValues()) {</span></div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span><span class="comment">// ...</span></div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span><span class="comment">// }</span></div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span><span class="comment">//</span></div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span><span class="comment">// // Parsing a flag as an enum.</span></div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span><span class="comment">// const std::optional<SolverType> solver_type =</span></div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span><span class="comment">// EnumFromString(absl::GetFlag(FLAGS_solver_type));</span></div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span><span class="comment">// if (!solver_type) {</span></div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span><span class="comment">// return util::InvalidArgumentErrorBuilder()</span></div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span><span class="comment">// _ << "failed to parse --solver_type value: "</span></div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span><span class="comment">// << absl::GetFlag(FLAGS_solver_type);</span></div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span><span class="comment">// }</span></div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span><span class="comment">//</span></div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span><span class="comment">// // Conversion to string.</span></div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span><span class="comment">// const SolverType solver_type = ...;</span></div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span><span class="comment">// LOG(INFO) << "solver: " << solver_type;</span></div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span><span class="comment">// absl::StrCat(EnumToString(solver_type), "_test");</span></div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span><span class="comment">// absl::StrCat(EnumToOptString(solver_type).value(), "_test");</span></div>
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|
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span><span class="comment">//</span></div>
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<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span><span class="comment">// // Conversion to Proto.</span></div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span><span class="comment">// const std::optional<SolverType> opt_solver_type = ...;</span></div>
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<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span><span class="comment">// const SolverTypeProto solver_type_proto = EnumToProto(opt_solver_type);</span></div>
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<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span><span class="comment">//</span></div>
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<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span><span class="comment">// // Conversion from Proto.</span></div>
|
|
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span><span class="comment">// const SolverTypeProto solver_type_proto = ...;</span></div>
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<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span><span class="comment">// const std::optional<SolverType> opt_solver_type =</span></div>
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|
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span><span class="comment">// EnumFromProto(solver_type_proto);</span></div>
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span><span class="comment">//</span></div>
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<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span><span class="comment">// Implementation note: don't specialize directly and instead use the</span></div>
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|
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span><span class="comment">// MATH_OPT_DEFINE_ENUM macro.</span></div>
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<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span><span class="keyword">template</span> <<span class="keyword">typename</span> E></div>
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<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_enum.html"> 128</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_enum.html">Enum</a> {</div>
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<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <span class="comment">// Must be true in all implementation. This is used with std::enable_if to</span></div>
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<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="comment">// condition the implementation of some overloads.</span></div>
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<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_enum.html#a2abd9d7ba73f85cf8682493cc58b4aec"> 131</a></span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_enum.html#a2abd9d7ba73f85cf8682493cc58b4aec">kIsImplemented</a> = <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> </div>
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|
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> <span class="comment">// The type of the Proto equivalent to this enum.</span></div>
|
|
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <span class="comment">// (Here we use int as a placeholder so that the code compiles.)</span></div>
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<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_enum.html#a299b35d9612aad2458779c28c7b2820e"> 136</a></span> <span class="keyword">using</span> <a class="code hl_typedef" href="structoperations__research_1_1math__opt_1_1_enum.html#a299b35d9612aad2458779c28c7b2820e">Proto</a> = int;</div>
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<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> </div>
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<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> <span class="comment">// The value Proto enum that represents the unspecified case.</span></div>
|
|
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_enum.html#a8d86341fe3f8d2c433be954ab5569415"> 139</a></span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <a class="code hl_typedef" href="structoperations__research_1_1math__opt_1_1_enum.html#a299b35d9612aad2458779c28c7b2820e">Proto</a> <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_enum.html#a8d86341fe3f8d2c433be954ab5569415">kProtoUnspecifiedValue</a> = {};</div>
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<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> </div>
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<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="comment">// Returns a unique string that represent the enum. Returns nullopt if the</span></div>
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|
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> <span class="comment">// input value is not a valid value of the enum.</span></div>
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|
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> <span class="comment">//</span></div>
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|
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> <span class="comment">// The returned string should not include the enum name and should be in</span></div>
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|
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="comment">// snake_case (e.g. is the enum is kNoSolutionFound, this should return</span></div>
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|
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> <span class="comment">// "no_solution_found").</span></div>
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|
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> <span class="comment">//</span></div>
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|
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="comment">// Please prefer using the global functions EnumToString() (or</span></div>
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|
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> <span class="comment">// EnumToOptString() if support for invalid values is needed) instead to</span></div>
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|
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> <span class="comment">// benefit from automatic template type deduction.</span></div>
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<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> <span class="keyword">static</span> std::optional<absl::string_view> <a class="code hl_function" href="structoperations__research_1_1math__opt_1_1_enum.html#a0c2d39b3d9fbfd4dbde5c6029b8a1ceb">ToOptString</a>(E <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div>
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|
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> </div>
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<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> <span class="comment">// Returns all possible values of the enum.</span></div>
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|
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <span class="keyword">static</span> absl::Span<const E> <a class="code hl_function" href="structoperations__research_1_1math__opt_1_1_enum.html#a4af3361a82c9a45b9fcbe2b8ab7d9719">AllValues</a>();</div>
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|
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span>};</div>
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<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> </div>
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<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1math__opt.html#a421f67b1b543745af048494865a94609"> 157</a></span><span class="keyword">using</span> <a class="code hl_typedef" href="namespaceoperations__research_1_1math__opt.html#a421f67b1b543745af048494865a94609">ProtoEnumIsValid</a> = bool (*)(int);</div>
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<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> </div>
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<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span><span class="comment">// This template is specialized for each enum in the Proto API. It</span></div>
|
|
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span><span class="comment">// defines the correspondence with the C++ enum.</span></div>
|
|
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span><span class="comment">//</span></div>
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|
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span><span class="comment">// Implementation note: don't specialize directly and instead use the</span></div>
|
|
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span><span class="comment">// MATH_OPT_DEFINE_ENUM macro.</span></div>
|
|
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span><span class="keyword">template</span> <<span class="keyword">typename</span> P></div>
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<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_enum_proto.html"> 165</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_enum_proto.html">EnumProto</a> {</div>
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|
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> <span class="comment">// The type of the C++ enum equivalent to the P proto enum.</span></div>
|
|
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> <span class="comment">//</span></div>
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|
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> <span class="comment">// (Here we use void as a placeholder so that the code compiles.)</span></div>
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<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_enum_proto.html#a1544025f8a471a50786774bf0891273f"> 169</a></span> <span class="keyword">using</span> <a class="code hl_typedef" href="structoperations__research_1_1math__opt_1_1_enum_proto.html#a1544025f8a471a50786774bf0891273f">Cpp</a> = void;</div>
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<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> </div>
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<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> <span class="comment">// The smallest valid enum value.</span></div>
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<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_enum_proto.html#a90d30ca997a99da54ab14d5b3d62020f"> 172</a></span> <span class="keyword">static</span> <span class="keyword">constexpr</span> P <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_enum_proto.html#a90d30ca997a99da54ab14d5b3d62020f">kMin</a> = {};</div>
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<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> </div>
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<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> <span class="comment">// The largest valid enum value.</span></div>
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|
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_enum_proto.html#a70d5539894b83398c84689ff38e432da"> 175</a></span> <span class="keyword">static</span> <span class="keyword">constexpr</span> P <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_enum_proto.html#a70d5539894b83398c84689ff38e432da">kMax</a> = {};</div>
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|
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> </div>
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<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> <span class="comment">// Proto function returning the true if the input integer matches a valid</span></div>
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|
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> <span class="comment">// value (some values may be missing in range [kMin, kMax]).</span></div>
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|
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"><a class="line" href="structoperations__research_1_1math__opt_1_1_enum_proto.html#a85efe4f007bdcece8febfc66c63ece7f"> 179</a></span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <a class="code hl_typedef" href="namespaceoperations__research_1_1math__opt.html#a421f67b1b543745af048494865a94609">ProtoEnumIsValid</a> <a class="code hl_variable" href="structoperations__research_1_1math__opt_1_1_enum_proto.html#a85efe4f007bdcece8febfc66c63ece7f">kIsValid</a> = <span class="keyword">nullptr</span>;</div>
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<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span>};</div>
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<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> </div>
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<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span><span class="comment">// Returns the Proto enum that matches the input C++ proto, returns</span></div>
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|
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span><span class="comment">// Enum<E>::kProtoUnspecifiedValue if the input is std::nullopt.</span></div>
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<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span><span class="keyword">template</span> <<span class="keyword">typename</span> E></div>
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<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span><span class="keyword">typename</span> <a class="code hl_typedef" href="structoperations__research_1_1math__opt_1_1_enum.html#a299b35d9612aad2458779c28c7b2820e">Enum<E>::Proto</a> <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#afd93f2315e9dc6bea76df7e7d0d853d1">EnumToProto</a>(<span class="keyword">const</span> std::optional<E> <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div>
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<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> </div>
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<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span><span class="comment">// Returns the Proto enum that matches the input C++ proto.</span></div>
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|
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span><span class="comment">//</span></div>
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|
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span><span class="comment">// Implementation note: this overload is necessary for EnumToProto(Xxx::kXxx)</span></div>
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<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span><span class="comment">// since C++ won't deduce E in std::optional<E> with the other overload.</span></div>
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|
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span><span class="keyword">template</span> <<span class="keyword">typename</span> E></div>
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<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span><span class="keyword">typename</span> <a class="code hl_typedef" href="structoperations__research_1_1math__opt_1_1_enum.html#a299b35d9612aad2458779c28c7b2820e">Enum<E>::Proto</a> <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#afd93f2315e9dc6bea76df7e7d0d853d1">EnumToProto</a>(<span class="keyword">const</span> E <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div>
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<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> </div>
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<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span><span class="comment">// Returns the C++ enum that matches the input Proto enum, returns</span></div>
|
|
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span><span class="comment">// std::nullopt if the input is kProtoUnspecifiedValue.</span></div>
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<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span><span class="keyword">template</span> <<span class="keyword">typename</span> P></div>
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<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span>std::optional<typename EnumProto<P>::Cpp> <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#acd8f963e2ba6b11aafb05a134bcdb7d7">EnumFromProto</a>(<span class="keyword">const</span> P proto_value);</div>
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<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> </div>
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<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span><span class="comment">// Returns a unique string that represent the enum.</span></div>
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<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span><span class="comment">//</span></div>
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<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span><span class="comment">// It CHECKs that the input is a valid enum value. For most users this should</span></div>
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<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span><span class="comment">// always be the case since MathOpt don't generates invalid data.</span></div>
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<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span><span class="comment">//</span></div>
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<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span><span class="comment">// Prefer using operator<< when possible though. As a side benefice it does not</span></div>
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<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span><span class="comment">// CHECK but instead prints the integer value of the invalid input.</span></div>
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<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span><span class="keyword">template</span> <<span class="keyword">typename</span> E></div>
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<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span>absl::string_view <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#a0f53152d02871cc3d74708a98798108e">EnumToString</a>(<span class="keyword">const</span> E <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div>
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<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> </div>
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<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span><span class="comment">// Returns a unique string that represent the enum. Returns nullopt if the input</span></div>
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<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span><span class="comment">// value is not a valid value of the enum.</span></div>
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<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span><span class="keyword">template</span> <<span class="keyword">typename</span> E></div>
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<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span>std::optional<absl::string_view> <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#ab9534b6743126afe27e4982249abcbf4">EnumToOptString</a>(<span class="keyword">const</span> E <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div>
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<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> </div>
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<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span><span class="comment">// Returns the enum value that corresponds to the input string or nullopt if no</span></div>
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|
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span><span class="comment">// enum matches.</span></div>
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<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span><span class="comment">//</span></div>
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|
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span><span class="comment">// The expected strings are the one returned by EnumToString().</span></div>
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<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span><span class="comment">//</span></div>
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<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span><span class="comment">// This is O(n) in complexity so use with care.</span></div>
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<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span><span class="keyword">template</span> <<span class="keyword">typename</span> E></div>
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<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span>std::optional<E> <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#a00d8499c8f5baa9ecd7b24d34d7b25a2">EnumFromString</a>(<span class="keyword">const</span> absl::string_view str);</div>
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<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> </div>
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<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span><span class="comment">// Overload of operator<< for enum types that implements Enum<E>.</span></div>
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<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span><span class="comment">//</span></div>
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<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span><span class="comment">// It calls EnumToOptString(), printing the returned value if not nullopt. When</span></div>
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<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span><span class="comment">// nullopt it prints the enum numeric value instead.</span></div>
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<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span><span class="keyword">template</span> <<span class="keyword">typename</span> E,</div>
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<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> <span class="comment">// We must use enable_if here to prevent this overload to be selected</span></div>
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<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> <span class="comment">// for other types than ones that implement Enum<E>.</span></div>
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<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> <span class="keyword">typename</span> = std::enable_if_t<Enum<E>::kIsImplemented>></div>
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<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1math__opt.html#a2e76538efbebc3745c913d17d09bfa68"> 231</a></span>std::ostream& <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#a2e76538efbebc3745c913d17d09bfa68">operator<<</a>(std::ostream& out, <span class="keyword">const</span> E <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) {</div>
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<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> <span class="keyword">const</span> std::optional<absl::string_view> opt_str = <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#ab9534b6743126afe27e4982249abcbf4">EnumToOptString</a>(<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div>
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<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> <span class="keywordflow">if</span> (opt_str.has_value()) {</div>
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<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> out << *opt_str;</div>
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<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span> out << <span class="stringliteral">"<invalid enum ("</span> << <span class="keyword">static_cast<</span>std::underlying_type_t<E><span class="keyword">></span>(<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>)</div>
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<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> << <span class="stringliteral">")>"</span>;</div>
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<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span> }</div>
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<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span> <span class="keywordflow">return</span> out;</div>
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<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span>}</div>
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<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span> </div>
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<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span><span class="comment">// Overload of operator<< for std::optional<E> when Enum<E> is implemented.</span></div>
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<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span><span class="comment">//</span></div>
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<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span><span class="comment">// When the value is nullopt, it prints "<unspecified>", else it prints the enum</span></div>
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<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span><span class="comment">// value.</span></div>
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<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span><span class="keyword">template</span> <<span class="keyword">typename</span> E,</div>
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<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span> <span class="comment">// We must use enable_if here to prevent this overload to be selected</span></div>
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<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span> <span class="comment">// for other types than ones that implement Enum<E>.</span></div>
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<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span> <span class="keyword">typename</span> = std::enable_if_t<Enum<E>::kIsImplemented>></div>
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<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1math__opt.html#a2d5fc713961a16f62654a672dc55346e"> 250</a></span>std::ostream& <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#a2e76538efbebc3745c913d17d09bfa68">operator<<</a>(std::ostream& out, <span class="keyword">const</span> std::optional<E> opt_value) {</div>
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<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span> <span class="keywordflow">if</span> (opt_value.has_value()) {</div>
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<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span> out << *opt_value;</div>
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<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> out << <span class="stringliteral">"<unspecified>"</span>;</div>
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<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span> }</div>
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<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span> <span class="keywordflow">return</span> out;</div>
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<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span>}</div>
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<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> </div>
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<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span><span class="comment">// Template functions implementations after this point.</span></div>
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<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span><span class="comment"></span> </div>
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<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span><span class="keyword">template</span> <<span class="keyword">typename</span> E></div>
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<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1math__opt.html#afd93f2315e9dc6bea76df7e7d0d853d1"> 264</a></span><span class="keyword">typename</span> <a class="code hl_typedef" href="structoperations__research_1_1math__opt_1_1_enum.html#a299b35d9612aad2458779c28c7b2820e">Enum<E>::Proto</a> <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#afd93f2315e9dc6bea76df7e7d0d853d1">EnumToProto</a>(<span class="keyword">const</span> std::optional<E> <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) {</div>
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<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> <span class="keywordflow">return</span> <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> ? <span class="keyword">static_cast<</span>typename <a class="code hl_typedef" href="structoperations__research_1_1math__opt_1_1_enum.html#a299b35d9612aad2458779c28c7b2820e">Enum<E>::Proto</a><span class="keyword">></span>(*value)</div>
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<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span> : <a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_enum.html">Enum<E>::kProtoUnspecifiedValue</a>;</div>
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<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span>}</div>
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<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span> </div>
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<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span><span class="keyword">template</span> <<span class="keyword">typename</span> E></div>
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<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1math__opt.html#a86f945abbc696d74a9dc599130fdbd6d"> 270</a></span><span class="keyword">typename</span> <a class="code hl_typedef" href="structoperations__research_1_1math__opt_1_1_enum.html#a299b35d9612aad2458779c28c7b2820e">Enum<E>::Proto</a> <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#afd93f2315e9dc6bea76df7e7d0d853d1">EnumToProto</a>(<span class="keyword">const</span> E <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) {</div>
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<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#afd93f2315e9dc6bea76df7e7d0d853d1">EnumToProto</a>(std::make_optional(<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>));</div>
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<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span>}</div>
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<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> </div>
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<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span><span class="keyword">template</span> <<span class="keyword">typename</span> P></div>
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<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1math__opt.html#acd8f963e2ba6b11aafb05a134bcdb7d7"> 275</a></span>std::optional<typename EnumProto<P>::Cpp> <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#acd8f963e2ba6b11aafb05a134bcdb7d7">EnumFromProto</a>(<span class="keyword">const</span> P proto_value) {</div>
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<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> <span class="keywordflow">if</span> (proto_value == <a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_enum.html">Enum</a><<span class="keyword">typename</span> <a class="code hl_typedef" href="structoperations__research_1_1math__opt_1_1_enum_proto.html#a1544025f8a471a50786774bf0891273f">EnumProto<P>::Cpp</a>>::kProtoUnspecifiedValue) {</div>
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<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span> <span class="keywordflow">return</span> std::nullopt;</div>
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<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> }</div>
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<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span> <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>typename <a class="code hl_typedef" href="structoperations__research_1_1math__opt_1_1_enum_proto.html#a1544025f8a471a50786774bf0891273f">EnumProto<P>::Cpp</a><span class="keyword">></span>(proto_value);</div>
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<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span>}</div>
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<div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span> </div>
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<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span><span class="keyword">template</span> <<span class="keyword">typename</span> E></div>
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<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1math__opt.html#a0f53152d02871cc3d74708a98798108e"> 283</a></span>absl::string_view <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#a0f53152d02871cc3d74708a98798108e">EnumToString</a>(<span class="keyword">const</span> E <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) {</div>
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<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span> std::optional<absl::string_view> opt_str = <a class="code hl_function" href="structoperations__research_1_1math__opt_1_1_enum.html#a0c2d39b3d9fbfd4dbde5c6029b8a1ceb">Enum<E>::ToOptString</a>(<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div>
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<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span> <a class="code hl_define" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(opt_str.has_value())</div>
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<div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span> << <span class="stringliteral">"invalid value: "</span> << <span class="keyword">static_cast<</span>std::underlying_type_t<E><span class="keyword">></span>(<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div>
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<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span> <span class="keywordflow">return</span> *opt_str;</div>
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<div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span>}</div>
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<div class="line"><a id="l00289" name="l00289"></a><span class="lineno"> 289</span> </div>
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<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span><span class="keyword">template</span> <<span class="keyword">typename</span> E></div>
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<div class="line"><a id="l00291" name="l00291"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1math__opt.html#ab9534b6743126afe27e4982249abcbf4"> 291</a></span>std::optional<absl::string_view> <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#ab9534b6743126afe27e4982249abcbf4">EnumToOptString</a>(<span class="keyword">const</span> E <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) {</div>
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<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span> <span class="keywordflow">return</span> <a class="code hl_function" href="structoperations__research_1_1math__opt_1_1_enum.html#a0c2d39b3d9fbfd4dbde5c6029b8a1ceb">Enum<E>::ToOptString</a>(<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div>
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<div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span>}</div>
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<div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span> </div>
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<div class="line"><a id="l00295" name="l00295"></a><span class="lineno"> 295</span><span class="keyword">template</span> <<span class="keyword">typename</span> E></div>
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<div class="line"><a id="l00296" name="l00296"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1math__opt.html#a00d8499c8f5baa9ecd7b24d34d7b25a2"> 296</a></span>std::optional<E> <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#a00d8499c8f5baa9ecd7b24d34d7b25a2">EnumFromString</a>(<span class="keyword">const</span> absl::string_view str) {</div>
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<div class="line"><a id="l00297" name="l00297"></a><span class="lineno"> 297</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> E <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> : <a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_enum.html">Enum<E>::AllValues</a>()) {</div>
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<div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span> <span class="keywordflow">if</span> (<a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#ab9534b6743126afe27e4982249abcbf4">EnumToOptString</a>(<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) == str) {</div>
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<div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span> <span class="keywordflow">return</span> <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>;</div>
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<div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span> }</div>
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<div class="line"><a id="l00301" name="l00301"></a><span class="lineno"> 301</span> }</div>
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<div class="line"><a id="l00302" name="l00302"></a><span class="lineno"> 302</span> <span class="keywordflow">return</span> std::nullopt;</div>
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<div class="line"><a id="l00303" name="l00303"></a><span class="lineno"> 303</span>}</div>
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<div class="line"><a id="l00304" name="l00304"></a><span class="lineno"> 304</span> </div>
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<div class="line"><a id="l00305" name="l00305"></a><span class="lineno"> 305</span><span class="comment">// Macros that defines the templates specializations for Enum and EnumProto.</span></div>
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<div class="line"><a id="l00306" name="l00306"></a><span class="lineno"> 306</span><span class="comment">//</span></div>
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<div class="line"><a id="l00307" name="l00307"></a><span class="lineno"> 307</span><span class="comment">// The CppEnum parameter is the name of the C++ enum class which values are the</span></div>
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<div class="line"><a id="l00308" name="l00308"></a><span class="lineno"> 308</span><span class="comment">// Proto enum values. The C++ enum must contain a value for each value of the</span></div>
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<div class="line"><a id="l00309" name="l00309"></a><span class="lineno"> 309</span><span class="comment">// Proto enum but the UNSPECIFIED one. The proto_unspecified_value is the</span></div>
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<div class="line"><a id="l00310" name="l00310"></a><span class="lineno"> 310</span><span class="comment">// UNSPECIFIED one.</span></div>
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<div class="line"><a id="l00311" name="l00311"></a><span class="lineno"> 311</span><span class="comment">//</span></div>
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<div class="line"><a id="l00312" name="l00312"></a><span class="lineno"> 312</span><span class="comment">// It leaves two functions to be implemented in the .cc file:</span></div>
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<div class="line"><a id="l00313" name="l00313"></a><span class="lineno"> 313</span><span class="comment">//</span></div>
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<div class="line"><a id="l00314" name="l00314"></a><span class="lineno"> 314</span><span class="comment">// absl::string_view Enum<CppEnum>::ToOptString(CppEnum value) {</span></div>
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<div class="line"><a id="l00315" name="l00315"></a><span class="lineno"> 315</span><span class="comment">// absl::Span<const CppEnum> Enum<CppEnum>::AllValues();</span></div>
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<div class="line"><a id="l00316" name="l00316"></a><span class="lineno"> 316</span><span class="comment">//</span></div>
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<div class="line"><a id="l00317" name="l00317"></a><span class="lineno"> 317</span><span class="comment">// See the comment at the top of this file for an example. See the comment on</span></div>
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<div class="line"><a id="l00318" name="l00318"></a><span class="lineno"> 318</span><span class="comment">// Enum struct for the functions that can then be used on enums.</span></div>
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<div class="line"><a id="l00319" name="l00319"></a><span class="lineno"><a class="line" href="enums_8h.html#af602afafd0a177b2dcab54c32c999d81"> 319</a></span><span class="preprocessor">#define MATH_OPT_DEFINE_ENUM(CppEnum, proto_unspecified_value) \</span></div>
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<div class="line"><a id="l00320" name="l00320"></a><span class="lineno"> 320</span><span class="preprocessor"> template <> \</span></div>
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<div class="line"><a id="l00321" name="l00321"></a><span class="lineno"> 321</span><span class="preprocessor"> struct Enum<CppEnum> { \</span></div>
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<div class="line"><a id="l00322" name="l00322"></a><span class="lineno"> 322</span><span class="preprocessor"> static constexpr bool kIsImplemented = true; \</span></div>
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<div class="line"><a id="l00323" name="l00323"></a><span class="lineno"> 323</span><span class="preprocessor"> using Proto = CppEnum##Proto; \</span></div>
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<div class="line"><a id="l00324" name="l00324"></a><span class="lineno"> 324</span><span class="preprocessor"> static constexpr Proto kProtoUnspecifiedValue = proto_unspecified_value; \</span></div>
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<div class="line"><a id="l00325" name="l00325"></a><span class="lineno"> 325</span><span class="preprocessor"> static std::optional<absl::string_view> ToOptString(CppEnum value); \</span></div>
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<div class="line"><a id="l00326" name="l00326"></a><span class="lineno"> 326</span><span class="preprocessor"> static absl::Span<const CppEnum> AllValues(); \</span></div>
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<div class="line"><a id="l00327" name="l00327"></a><span class="lineno"> 327</span><span class="preprocessor"> }; \</span></div>
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<div class="line"><a id="l00328" name="l00328"></a><span class="lineno"> 328</span><span class="preprocessor"> \</span></div>
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<div class="line"><a id="l00329" name="l00329"></a><span class="lineno"> 329</span><span class="preprocessor"> template <> \</span></div>
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<div class="line"><a id="l00330" name="l00330"></a><span class="lineno"> 330</span><span class="preprocessor"> struct EnumProto<CppEnum##Proto> { \</span></div>
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<div class="line"><a id="l00331" name="l00331"></a><span class="lineno"> 331</span><span class="preprocessor"> using Cpp = CppEnum; \</span></div>
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<div class="line"><a id="l00332" name="l00332"></a><span class="lineno"> 332</span><span class="preprocessor"> static constexpr CppEnum##Proto kMin = CppEnum##Proto##_MIN; \</span></div>
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<div class="line"><a id="l00333" name="l00333"></a><span class="lineno"> 333</span><span class="preprocessor"> static constexpr CppEnum##Proto kMax = CppEnum##Proto##_MAX; \</span></div>
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<div class="line"><a id="l00334" name="l00334"></a><span class="lineno"> 334</span><span class="preprocessor"> static constexpr ProtoEnumIsValid kIsValid = CppEnum##Proto##_IsValid; \</span></div>
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<div class="line"><a id="l00335" name="l00335"></a><span class="lineno"> 335</span><span class="preprocessor"> } </span><span class="comment">/* missing semicolon to force adding it at the invocation site */</span><span class="preprocessor"></span></div>
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<div class="line"><a id="l00336" name="l00336"></a><span class="lineno"> 336</span> </div>
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<div class="line"><a id="l00337" name="l00337"></a><span class="lineno"> 337</span>} <span class="comment">// namespace operations_research::math_opt</span></div>
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<div class="line"><a id="l00338" name="l00338"></a><span class="lineno"> 338</span> </div>
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<div class="line"><a id="l00339" name="l00339"></a><span class="lineno"> 339</span><span class="preprocessor">#endif </span><span class="comment">// OR_TOOLS_MATH_OPT_CPP_ENUMS_H_</span></div>
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<div class="ttc" id="abase_2logging_8h_html"><div class="ttname"><a href="base_2logging_8h.html">logging.h</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_a3e1cfef60e774a81f30eaddf26a3a274"><div class="ttname"><a href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a></div><div class="ttdeci">#define CHECK(condition)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00495">base/logging.h:495</a></div></div>
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<div class="ttc" id="ademon__profiler_8cc_html_ac072af30c4ffbc834bb4c681f6ecb514"><div class="ttname"><a href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a></div><div class="ttdeci">int64_t value</div><div class="ttdef"><b>Definition:</b> <a href="demon__profiler_8cc_source.html#l00044">demon_profiler.cc:44</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html">operations_research::math_opt</a></div><div class="ttdef"><b>Definition:</b> <a href="arrow__operator__proxy_8h_source.html#l00020">arrow_operator_proxy.h:20</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html_a00d8499c8f5baa9ecd7b24d34d7b25a2"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html#a00d8499c8f5baa9ecd7b24d34d7b25a2">operations_research::math_opt::EnumFromString</a></div><div class="ttdeci">std::optional< E > EnumFromString(const absl::string_view str)</div><div class="ttdef"><b>Definition:</b> <a href="enums_8h_source.html#l00296">enums.h:296</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html_a0f53152d02871cc3d74708a98798108e"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html#a0f53152d02871cc3d74708a98798108e">operations_research::math_opt::EnumToString</a></div><div class="ttdeci">absl::string_view EnumToString(const E value)</div><div class="ttdef"><b>Definition:</b> <a href="enums_8h_source.html#l00283">enums.h:283</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html_a2e76538efbebc3745c913d17d09bfa68"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html#a2e76538efbebc3745c913d17d09bfa68">operations_research::math_opt::operator<<</a></div><div class="ttdeci">std::ostream & operator<<(std::ostream &out, const E value)</div><div class="ttdef"><b>Definition:</b> <a href="enums_8h_source.html#l00231">enums.h:231</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html_a421f67b1b543745af048494865a94609"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html#a421f67b1b543745af048494865a94609">operations_research::math_opt::ProtoEnumIsValid</a></div><div class="ttdeci">bool(*)(int) ProtoEnumIsValid</div><div class="ttdef"><b>Definition:</b> <a href="enums_8h_source.html#l00157">enums.h:157</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html_ab9534b6743126afe27e4982249abcbf4"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html#ab9534b6743126afe27e4982249abcbf4">operations_research::math_opt::EnumToOptString</a></div><div class="ttdeci">std::optional< absl::string_view > EnumToOptString(const E value)</div><div class="ttdef"><b>Definition:</b> <a href="enums_8h_source.html#l00291">enums.h:291</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html_acd8f963e2ba6b11aafb05a134bcdb7d7"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html#acd8f963e2ba6b11aafb05a134bcdb7d7">operations_research::math_opt::EnumFromProto</a></div><div class="ttdeci">std::optional< typename EnumProto< P >::Cpp > EnumFromProto(const P proto_value)</div><div class="ttdef"><b>Definition:</b> <a href="enums_8h_source.html#l00275">enums.h:275</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html_afd93f2315e9dc6bea76df7e7d0d853d1"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html#afd93f2315e9dc6bea76df7e7d0d853d1">operations_research::math_opt::EnumToProto</a></div><div class="ttdeci">Enum< E >::Proto EnumToProto(const std::optional< E > value)</div><div class="ttdef"><b>Definition:</b> <a href="enums_8h_source.html#l00264">enums.h:264</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_enum_html"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_enum.html">operations_research::math_opt::Enum</a></div><div class="ttdef"><b>Definition:</b> <a href="enums_8h_source.html#l00128">enums.h:128</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_enum_html_a0c2d39b3d9fbfd4dbde5c6029b8a1ceb"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_enum.html#a0c2d39b3d9fbfd4dbde5c6029b8a1ceb">operations_research::math_opt::Enum::ToOptString</a></div><div class="ttdeci">static std::optional< absl::string_view > ToOptString(E value)</div><div class="ttdef"><b>Definition:</b> <a href="callback_8cc_source.html#l00075">callback.cc:75</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_enum_html_a299b35d9612aad2458779c28c7b2820e"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_enum.html#a299b35d9612aad2458779c28c7b2820e">operations_research::math_opt::Enum::Proto</a></div><div class="ttdeci">int Proto</div><div class="ttdef"><b>Definition:</b> <a href="enums_8h_source.html#l00136">enums.h:136</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_enum_html_a2abd9d7ba73f85cf8682493cc58b4aec"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_enum.html#a2abd9d7ba73f85cf8682493cc58b4aec">operations_research::math_opt::Enum::kIsImplemented</a></div><div class="ttdeci">static constexpr bool kIsImplemented</div><div class="ttdef"><b>Definition:</b> <a href="enums_8h_source.html#l00131">enums.h:131</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_enum_html_a4af3361a82c9a45b9fcbe2b8ab7d9719"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_enum.html#a4af3361a82c9a45b9fcbe2b8ab7d9719">operations_research::math_opt::Enum::AllValues</a></div><div class="ttdeci">static absl::Span< const E > AllValues()</div><div class="ttdef"><b>Definition:</b> <a href="callback_8cc_source.html#l00094">callback.cc:94</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_enum_html_a8d86341fe3f8d2c433be954ab5569415"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_enum.html#a8d86341fe3f8d2c433be954ab5569415">operations_research::math_opt::Enum::kProtoUnspecifiedValue</a></div><div class="ttdeci">static constexpr Proto kProtoUnspecifiedValue</div><div class="ttdef"><b>Definition:</b> <a href="enums_8h_source.html#l00139">enums.h:139</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_enum_proto_html"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_enum_proto.html">operations_research::math_opt::EnumProto</a></div><div class="ttdef"><b>Definition:</b> <a href="enums_8h_source.html#l00165">enums.h:165</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_enum_proto_html_a1544025f8a471a50786774bf0891273f"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_enum_proto.html#a1544025f8a471a50786774bf0891273f">operations_research::math_opt::EnumProto::Cpp</a></div><div class="ttdeci">void Cpp</div><div class="ttdef"><b>Definition:</b> <a href="enums_8h_source.html#l00169">enums.h:169</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_enum_proto_html_a70d5539894b83398c84689ff38e432da"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_enum_proto.html#a70d5539894b83398c84689ff38e432da">operations_research::math_opt::EnumProto::kMax</a></div><div class="ttdeci">static constexpr P kMax</div><div class="ttdef"><b>Definition:</b> <a href="enums_8h_source.html#l00175">enums.h:175</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_enum_proto_html_a85efe4f007bdcece8febfc66c63ece7f"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_enum_proto.html#a85efe4f007bdcece8febfc66c63ece7f">operations_research::math_opt::EnumProto::kIsValid</a></div><div class="ttdeci">static constexpr ProtoEnumIsValid kIsValid</div><div class="ttdef"><b>Definition:</b> <a href="enums_8h_source.html#l00179">enums.h:179</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_enum_proto_html_a90d30ca997a99da54ab14d5b3d62020f"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_enum_proto.html#a90d30ca997a99da54ab14d5b3d62020f">operations_research::math_opt::EnumProto::kMin</a></div><div class="ttdeci">static constexpr P kMin</div><div class="ttdef"><b>Definition:</b> <a href="enums_8h_source.html#l00172">enums.h:172</a></div></div>
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