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<a href="sched__search_8cc.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright 2010-2018 Google LLC</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">// Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// you may not use this file except in compliance with the License.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// You may obtain a copy of the License at</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment">// distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment">// See the License for the specific language governing permissions and</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment">// limitations under the License.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160; </div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#include &lt;cstring&gt;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160; </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#include &quot;absl/strings/str_format.h&quot;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="integral__types_8h.html">ortools/base/integral_types.h</a>&quot;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="base_2logging_8h.html">ortools/base/logging.h</a>&quot;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="constraint__solver_8h.html">ortools/constraint_solver/constraint_solver.h</a>&quot;</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="constraint__solveri_8h.html">ortools/constraint_solver/constraint_solveri.h</a>&quot;</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="string__array_8h.html">ortools/util/string_array.h</a>&quot;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceoperations__research.html">operations_research</a> {</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="keyword">namespace </span>{</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> ValueToIndex(<a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> <a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a>) { <span class="keywordflow">return</span> <a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a> - 1; }</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> IndexToValue(<a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) { <span class="keywordflow">return</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> + 1; }</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;} <span class="comment">// namespace</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; </div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="comment">// ----- SequenceVar -----</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="comment">// TODO(user): Add better class invariants, in particular checks</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="comment">// that ranked_first, ranked_last, and unperformed are truly disjoint.</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;SequenceVar::SequenceVar(Solver* <span class="keyword">const</span> s,</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="keyword">const</span> std::vector&lt;IntervalVar*&gt;&amp; intervals,</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; <span class="keyword">const</span> std::vector&lt;IntVar*&gt;&amp; nexts,</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="keyword">const</span> std::string&amp; <a class="code" href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a>)</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; : PropagationBaseObject(s),</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; intervals_(intervals),</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; nexts_(nexts),</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; previous_(nexts.size() + 1, -1) {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; set_name(<a class="code" href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a>);</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;}</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; </div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;SequenceVar::~SequenceVar() {}</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; </div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;IntervalVar* SequenceVar::Interval(<span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keywordflow">return</span> intervals_[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>];</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;}</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; </div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;IntVar* SequenceVar::Next(<span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> nexts_[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>]; }</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; </div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;std::string SequenceVar::DebugString()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> hmin, hmax, dmin, dmax;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; HorizonRange(&amp;hmin, &amp;hmax);</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; DurationRange(&amp;dmin, &amp;dmax);</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <span class="keywordtype">int</span> unperformed = 0;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keywordtype">int</span> ranked = 0;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="keywordtype">int</span> not_ranked = 0;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; ComputeStatistics(&amp;ranked, &amp;not_ranked, &amp;unperformed);</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keywordflow">return</span> absl::StrFormat(</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="stringliteral">&quot;%s(horizon = %d..%d, duration = %d..%d, not ranked = %d, ranked = %d, &quot;</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="stringliteral">&quot;nexts = [%s])&quot;</span>,</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <a class="code" href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a>(), hmin, hmax, dmin, dmax, not_ranked, ranked,</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <a class="code" href="namespaceoperations__research.html#a9be76edcbd5ccb982d92c8d90421a73c">JoinDebugStringPtr</a>(nexts_, <span class="stringliteral">&quot;, &quot;</span>));</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;}</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;<span class="keywordtype">void</span> SequenceVar::Accept(ModelVisitor* <span class="keyword">const</span> visitor)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; visitor-&gt;VisitSequenceVariable(<span class="keyword">this</span>);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;}</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="keywordtype">void</span> SequenceVar::DurationRange(<a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a>* <span class="keyword">const</span> dmin, <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a>* <span class="keyword">const</span> dmax)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> dur_min = 0;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> dur_max = 0;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; intervals_.size(); ++i) {</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; IntervalVar* <span class="keyword">const</span> t = intervals_[i];</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; <span class="keywordflow">if</span> (t-&gt;MayBePerformed()) {</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <span class="keywordflow">if</span> (t-&gt;MustBePerformed()) {</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; dur_min += t-&gt;DurationMin();</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; }</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; dur_max += t-&gt;DurationMax();</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; }</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; }</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; *dmin = dur_min;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; *dmax = dur_max;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;}</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; </div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;<span class="keywordtype">void</span> SequenceVar::HorizonRange(<a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a>* <span class="keyword">const</span> hmin, <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a>* <span class="keyword">const</span> hmax)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> hor_min = <a class="code" href="integral__types_8h.html#a74ea76ea27f48fb1b6e148e1577b3719">kint64max</a>;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> hor_max = <a class="code" href="integral__types_8h.html#af458164b470cbba416d5ed579e00ff60">kint64min</a>;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; intervals_.size(); ++i) {</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; IntervalVar* <span class="keyword">const</span> t = intervals_[i];</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <span class="keywordflow">if</span> (t-&gt;MayBePerformed()) {</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; IntervalVar* <span class="keyword">const</span> t = intervals_[i];</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; hor_min = <a class="code" href="alldiff__cst_8cc.html#a021e695f54a13bd809c34b2f4ca87c37">std::min</a>(hor_min, t-&gt;StartMin());</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; hor_max = <a class="code" href="alldiff__cst_8cc.html#a9d0c202d5fdd62f4fa2c613339ff168a">std::max</a>(hor_max, t-&gt;EndMax());</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; }</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; }</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; *hmin = hor_min;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; *hmax = hor_max;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;}</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; </div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;<span class="keywordtype">void</span> SequenceVar::ActiveHorizonRange(<a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a>* <span class="keyword">const</span> hmin,</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a>* <span class="keyword">const</span> hmax)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; absl::flat_hash_set&lt;int&gt; decided;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; intervals_.size(); ++i) {</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keywordflow">if</span> (intervals_[i]-&gt;CannotBePerformed()) {</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; decided.insert(i);</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; }</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; }</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; <span class="keywordtype">int</span> first = 0;</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <span class="keywordflow">while</span> (nexts_[first]-&gt;Bound()) {</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; first = nexts_[first]-&gt;Min();</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <span class="keywordflow">if</span> (first &lt; nexts_.size()) {</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; decided.insert(ValueToIndex(first));</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; }</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; }</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; <span class="keywordflow">if</span> (first != nexts_.size()) {</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; UpdatePrevious();</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; <span class="keywordtype">int</span> last = nexts_.size();</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; <span class="keywordflow">while</span> (previous_[last] != -1) {</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; last = previous_[last];</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; decided.insert(ValueToIndex(last));</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; }</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; }</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> hor_min = <a class="code" href="integral__types_8h.html#a74ea76ea27f48fb1b6e148e1577b3719">kint64max</a>;</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> hor_max = <a class="code" href="integral__types_8h.html#af458164b470cbba416d5ed579e00ff60">kint64min</a>;</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; intervals_.size(); ++i) {</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a>(decided, i)) {</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; IntervalVar* <span class="keyword">const</span> t = intervals_[i];</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; hor_min = <a class="code" href="alldiff__cst_8cc.html#a021e695f54a13bd809c34b2f4ca87c37">std::min</a>(hor_min, t-&gt;StartMin());</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; hor_max = <a class="code" href="alldiff__cst_8cc.html#a9d0c202d5fdd62f4fa2c613339ff168a">std::max</a>(hor_max, t-&gt;EndMax());</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; }</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; }</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; *hmin = hor_min;</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; *hmax = hor_max;</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;}</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;<span class="keywordtype">void</span> SequenceVar::ComputeStatistics(<span class="keywordtype">int</span>* <span class="keyword">const</span> ranked, <span class="keywordtype">int</span>* <span class="keyword">const</span> not_ranked,</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; <span class="keywordtype">int</span>* <span class="keyword">const</span> unperformed)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; *unperformed = 0;</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; intervals_.size(); ++i) {</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; <span class="keywordflow">if</span> (intervals_[i]-&gt;CannotBePerformed()) {</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; (*unperformed)++;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; }</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; }</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; *ranked = 0;</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; <span class="keywordtype">int</span> first = 0;</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; <span class="keywordflow">while</span> (first &lt; nexts_.size() &amp;&amp; nexts_[first]-&gt;Bound()) {</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; first = nexts_[first]-&gt;Min();</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; (*ranked)++;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; }</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; <span class="keywordflow">if</span> (first != nexts_.size()) {</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; UpdatePrevious();</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; <span class="keywordtype">int</span> last = nexts_.size();</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; <span class="keywordflow">while</span> (previous_[last] != -1) {</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; last = previous_[last];</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; (*ranked)++;</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; }</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; } <span class="keywordflow">else</span> { <span class="comment">// We counted the sentinel.</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; (*ranked)--;</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; }</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; *not_ranked = intervals_.size() - *ranked - *unperformed;</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;}</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; </div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160;<span class="keywordtype">int</span> SequenceVar::ComputeForwardFrontier() {</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; <span class="keywordtype">int</span> first = 0;</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; <span class="keywordflow">while</span> (first != nexts_.size() &amp;&amp; nexts_[first]-&gt;Bound()) {</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; first = nexts_[first]-&gt;Min();</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; }</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; <span class="keywordflow">return</span> first;</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160;}</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; </div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160;<span class="keywordtype">int</span> SequenceVar::ComputeBackwardFrontier() {</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; UpdatePrevious();</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; <span class="keywordtype">int</span> last = nexts_.size();</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <span class="keywordflow">while</span> (previous_[last] != -1) {</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; last = previous_[last];</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; }</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; <span class="keywordflow">return</span> last;</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;}</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160;<span class="keywordtype">void</span> SequenceVar::ComputePossibleFirstsAndLasts(</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; std::vector&lt;int&gt;* <span class="keyword">const</span> possible_firsts,</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; std::vector&lt;int&gt;* <span class="keyword">const</span> possible_lasts) {</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; possible_firsts-&gt;clear();</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; possible_lasts-&gt;clear();</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; absl::flat_hash_set&lt;int&gt; to_check;</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; intervals_.size(); ++i) {</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; <span class="keywordflow">if</span> (intervals_[i]-&gt;MayBePerformed()) {</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; to_check.insert(i);</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; }</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; }</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; <span class="keywordtype">int</span> first = 0;</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; <span class="keywordflow">while</span> (nexts_[first]-&gt;Bound()) {</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; first = nexts_[first]-&gt;Min();</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; <span class="keywordflow">if</span> (first == nexts_.size()) {</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; }</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; to_check.erase(ValueToIndex(first));</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; }</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; </div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; IntVar* <span class="keyword">const</span> forward_var = nexts_[first];</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; std::vector&lt;int&gt; candidates;</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> smallest_start_max = <a class="code" href="integral__types_8h.html#a74ea76ea27f48fb1b6e148e1577b3719">kint64max</a>;</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; <span class="keywordtype">int</span> ssm_support = -1;</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; <span class="keywordflow">for</span> (<a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> i = forward_var-&gt;Min(); i &lt;= forward_var-&gt;Max(); ++i) {</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; <span class="comment">// TODO(user): use domain iterator.</span></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; <span class="keywordflow">if</span> (i != 0 &amp;&amp; i &lt; IndexToValue(intervals_.size()) &amp;&amp;</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; intervals_[ValueToIndex(i)]-&gt;MayBePerformed() &amp;&amp;</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; forward_var-&gt;Contains(i)) {</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> candidate = ValueToIndex(i);</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; candidates.push_back(candidate);</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; <span class="keywordflow">if</span> (intervals_[candidate]-&gt;MustBePerformed()) {</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160; <span class="keywordflow">if</span> (smallest_start_max &gt; intervals_[candidate]-&gt;StartMax()) {</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160; smallest_start_max = intervals_[candidate]-&gt;StartMax();</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; ssm_support = candidate;</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160; }</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160; }</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160; }</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160; }</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; candidates.size(); ++i) {</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> candidate = candidates[i];</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; <span class="keywordflow">if</span> (candidate == ssm_support ||</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160; intervals_[candidate]-&gt;EndMin() &lt;= smallest_start_max) {</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160; possible_firsts-&gt;push_back(candidate);</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160; }</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160; }</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160; </div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160; UpdatePrevious();</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160; <span class="keywordtype">int</span> last = nexts_.size();</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160; <span class="keywordflow">while</span> (previous_[last] != -1) {</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160; last = previous_[last];</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160; to_check.erase(ValueToIndex(last));</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160; }</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160; </div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; candidates.clear();</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> biggest_end_min = <a class="code" href="integral__types_8h.html#af458164b470cbba416d5ed579e00ff60">kint64min</a>;</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160; <span class="keywordtype">int</span> bem_support = -1;</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160; <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> candidate : to_check) {</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160; <span class="keywordflow">if</span> (nexts_[IndexToValue(candidate)]-&gt;Contains(last)) {</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160; candidates.push_back(candidate);</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160; <span class="keywordflow">if</span> (intervals_[candidate]-&gt;MustBePerformed()) {</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160; <span class="keywordflow">if</span> (biggest_end_min &lt; intervals_[candidate]-&gt;EndMin()) {</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160; biggest_end_min = intervals_[candidate]-&gt;EndMin();</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160; bem_support = candidate;</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160; }</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160; }</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160; }</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160; }</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160; </div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; candidates.size(); ++i) {</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> candidate = candidates[i];</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160; <span class="keywordflow">if</span> (candidate == bem_support ||</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160; intervals_[candidate]-&gt;StartMax() &gt;= biggest_end_min) {</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160; possible_lasts-&gt;push_back(candidate);</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160; }</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160; }</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160;}</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160; </div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160;<span class="keywordtype">void</span> SequenceVar::RankSequence(<span class="keyword">const</span> std::vector&lt;int&gt;&amp; rank_first,</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160; <span class="keyword">const</span> std::vector&lt;int&gt;&amp; rank_last,</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160; <span class="keyword">const</span> std::vector&lt;int&gt;&amp; unperformed) {</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160; solver()-&gt;GetPropagationMonitor()-&gt;RankSequence(<span class="keyword">this</span>, rank_first, rank_last,</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160; unperformed);</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160; <span class="comment">// Mark unperformed.</span></div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160; <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a> : unperformed) {</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160; intervals_[<a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a>]-&gt;SetPerformed(<span class="keyword">false</span>);</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160; }</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160; <span class="comment">// Forward.</span></div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160; <span class="keywordtype">int</span> forward = 0;</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; rank_first.size(); ++i) {</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="constraint__solver_8cc.html#a395f613555f398dd389670bb4c2a4599">next</a> = 1 + rank_first[i];</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160; nexts_[forward]-&gt;SetValue(<a class="code" href="constraint__solver_8cc.html#a395f613555f398dd389670bb4c2a4599">next</a>);</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160; forward = <a class="code" href="constraint__solver_8cc.html#a395f613555f398dd389670bb4c2a4599">next</a>;</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160; }</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160; <span class="comment">// Backward.</span></div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>&#160; <span class="keywordtype">int</span> backward = IndexToValue(intervals_.size());</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; rank_last.size(); ++i) {</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="constraint__solver_8cc.html#a395f613555f398dd389670bb4c2a4599">next</a> = 1 + rank_last[i];</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160; nexts_[<a class="code" href="constraint__solver_8cc.html#a395f613555f398dd389670bb4c2a4599">next</a>]-&gt;SetValue(backward);</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>&#160; backward = <a class="code" href="constraint__solver_8cc.html#a395f613555f398dd389670bb4c2a4599">next</a>;</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>&#160; }</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160;}</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>&#160; </div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>&#160;<span class="keywordtype">void</span> SequenceVar::RankFirst(<span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) {</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>&#160; solver()-&gt;GetPropagationMonitor()-&gt;RankFirst(<span class="keyword">this</span>, <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>);</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>&#160; intervals_[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>]-&gt;SetPerformed(<span class="keyword">true</span>);</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160; <span class="keywordtype">int</span> forward_frontier = 0;</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160; <span class="keywordflow">while</span> (forward_frontier != nexts_.size() &amp;&amp;</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>&#160; nexts_[forward_frontier]-&gt;Bound()) {</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>&#160; forward_frontier = nexts_[forward_frontier]-&gt;Min();</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160; <span class="keywordflow">if</span> (forward_frontier == IndexToValue(<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>)) {</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160; <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160; }</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>&#160; }</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160; DCHECK_LT(forward_frontier, nexts_.size());</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160; nexts_[forward_frontier]-&gt;SetValue(IndexToValue(<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>));</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160;}</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160; </div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>&#160;<span class="keywordtype">void</span> SequenceVar::RankNotFirst(<span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) {</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160; solver()-&gt;GetPropagationMonitor()-&gt;RankNotFirst(<span class="keyword">this</span>, <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>);</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> forward_frontier = ComputeForwardFrontier();</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160; <span class="keywordflow">if</span> (forward_frontier &lt; nexts_.size()) {</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>&#160; nexts_[forward_frontier]-&gt;RemoveValue(IndexToValue(<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>));</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160; }</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160;}</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160; </div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160;<span class="keywordtype">void</span> SequenceVar::RankLast(<span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) {</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160; solver()-&gt;GetPropagationMonitor()-&gt;RankLast(<span class="keyword">this</span>, <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>);</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>&#160; intervals_[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>]-&gt;SetPerformed(<span class="keyword">true</span>);</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>&#160; UpdatePrevious();</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160; <span class="keywordtype">int</span> backward_frontier = nexts_.size();</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>&#160; <span class="keywordflow">while</span> (previous_[backward_frontier] != -1) {</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>&#160; backward_frontier = previous_[backward_frontier];</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160; <span class="keywordflow">if</span> (backward_frontier == IndexToValue(<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>)) {</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>&#160; <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>&#160; }</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160; }</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160; DCHECK_NE(backward_frontier, 0);</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>&#160; nexts_[IndexToValue(<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>)]-&gt;SetValue(backward_frontier);</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>&#160;}</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>&#160; </div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>&#160;<span class="keywordtype">void</span> SequenceVar::RankNotLast(<span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) {</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>&#160; solver()-&gt;GetPropagationMonitor()-&gt;RankNotLast(<span class="keyword">this</span>, <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>);</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> backward_frontier = ComputeBackwardFrontier();</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>&#160; nexts_[IndexToValue(<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>)]-&gt;RemoveValue(backward_frontier);</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>&#160;}</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>&#160; </div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>&#160;<span class="keywordtype">void</span> SequenceVar::UpdatePrevious()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; intervals_.size() + 2; ++i) {</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>&#160; previous_[i] = -1;</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>&#160; }</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nexts_.size(); ++i) {</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>&#160; <span class="keywordflow">if</span> (nexts_[i]-&gt;Bound()) {</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>&#160; previous_[nexts_[i]-&gt;Min()] = i;</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>&#160; }</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>&#160; }</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>&#160;}</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>&#160; </div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>&#160;<span class="keywordtype">void</span> SequenceVar::FillSequence(std::vector&lt;int&gt;* <span class="keyword">const</span> rank_first,</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>&#160; std::vector&lt;int&gt;* <span class="keyword">const</span> rank_last,</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>&#160; std::vector&lt;int&gt;* <span class="keyword">const</span> unperformed)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>&#160; CHECK(rank_first != <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>&#160; CHECK(rank_last != <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>&#160; CHECK(unperformed != <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>&#160; rank_first-&gt;clear();</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>&#160; rank_last-&gt;clear();</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>&#160; unperformed-&gt;clear();</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; intervals_.size(); ++i) {</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>&#160; <span class="keywordflow">if</span> (intervals_[i]-&gt;CannotBePerformed()) {</div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>&#160; unperformed-&gt;push_back(i);</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>&#160; }</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>&#160; }</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>&#160; <span class="keywordtype">int</span> first = 0;</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>&#160; <span class="keywordflow">while</span> (nexts_[first]-&gt;Bound()) {</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>&#160; first = nexts_[first]-&gt;Min();</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>&#160; <span class="keywordflow">if</span> (first &lt; nexts_.size()) {</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>&#160; rank_first-&gt;push_back(ValueToIndex(first));</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>&#160; }</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>&#160; }</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>&#160; <span class="keywordflow">if</span> (first != nexts_.size()) {</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>&#160; UpdatePrevious();</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>&#160; <span class="keywordtype">int</span> last = nexts_.size();</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>&#160; <span class="keywordflow">while</span> (previous_[last] != -1) {</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>&#160; last = previous_[last];</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>&#160; rank_last-&gt;push_back(ValueToIndex(last));</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>&#160; }</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>&#160; }</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>&#160;}</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>&#160; </div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>&#160;<span class="comment">// ----- Decisions and DecisionBuilders on interval vars -----</span></div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>&#160; </div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>&#160;<span class="comment">// TODO(user) : treat optional intervals</span></div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>&#160;<span class="comment">// TODO(user) : Call DecisionVisitor and pass name of variable</span></div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>&#160;<span class="keyword">namespace </span>{</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>&#160;<span class="comment">// Forward scheduling.</span></div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>&#160;<span class="keyword">class </span>ScheduleOrPostpone : <span class="keyword">public</span> Decision {</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>&#160; ScheduleOrPostpone(IntervalVar* <span class="keyword">const</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> est, <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a>* <span class="keyword">const</span> marker)</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>&#160; : var_(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>), est_(est), marker_(marker) {}</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>&#160; ~ScheduleOrPostpone()<span class="keyword"> override </span>{}</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>&#160; </div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>&#160; <span class="keywordtype">void</span> Apply(Solver* <span class="keyword">const</span> s)<span class="keyword"> override </span>{</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>&#160; var_-&gt;SetPerformed(<span class="keyword">true</span>);</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>&#160; <span class="keywordflow">if</span> (est_.Value() &lt; var_-&gt;StartMin()) {</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>&#160; est_.SetValue(s, var_-&gt;StartMin());</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>&#160; }</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>&#160; var_-&gt;SetStartRange(est_.Value(), est_.Value());</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>&#160; }</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>&#160; </div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>&#160; <span class="keywordtype">void</span> Refute(Solver* <span class="keyword">const</span> s)<span class="keyword"> override </span>{</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>&#160; s-&gt;SaveAndSetValue(marker_, est_.Value());</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>&#160; }</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>&#160; </div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>&#160; <span class="keywordtype">void</span> Accept(DecisionVisitor* <span class="keyword">const</span> visitor)<span class="keyword"> const override </span>{</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>&#160; CHECK(visitor != <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>&#160; visitor-&gt;VisitScheduleOrPostpone(var_, est_.Value());</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>&#160; }</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>&#160; </div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>&#160; std::string DebugString()<span class="keyword"> const override </span>{</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>&#160; <span class="keywordflow">return</span> absl::StrFormat(<span class="stringliteral">&quot;ScheduleOrPostpone(%s at %d)&quot;</span>, var_-&gt;DebugString(),</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>&#160; est_.Value());</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>&#160; }</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>&#160; </div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>&#160; IntervalVar* <span class="keyword">const</span> var_;</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>&#160; NumericalRev&lt;int64&gt; est_;</div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a>* <span class="keyword">const</span> marker_;</div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>&#160;};</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>&#160; </div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>&#160;<span class="keyword">class </span>SetTimesForward : <span class="keyword">public</span> DecisionBuilder {</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>&#160; <span class="keyword">explicit</span> SetTimesForward(<span class="keyword">const</span> std::vector&lt;IntervalVar*&gt;&amp; vars)</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>&#160; : <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>(vars), markers_(vars.size(), <a class="code" href="integral__types_8h.html#af458164b470cbba416d5ed579e00ff60">kint64min</a>) {}</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>&#160; </div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>&#160; ~SetTimesForward()<span class="keyword"> override </span>{}</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>&#160; </div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>&#160; Decision* Next(Solver* <span class="keyword">const</span> s)<span class="keyword"> override </span>{</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> best_est = <a class="code" href="integral__types_8h.html#a74ea76ea27f48fb1b6e148e1577b3719">kint64max</a>;</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> best_lct = <a class="code" href="integral__types_8h.html#a74ea76ea27f48fb1b6e148e1577b3719">kint64max</a>;</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>&#160; <span class="keywordtype">int</span> support = -1;</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>&#160; <span class="comment">// We are looking for the interval that has the smallest start min</span></div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>&#160; <span class="comment">// (tie break with smallest end max) and is not postponed. And</span></div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>&#160; <span class="comment">// you&#39;re going to schedule that interval at its start min.</span></div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>.size(); ++i) {</div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>&#160; IntervalVar* <span class="keyword">const</span> v = <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>[i];</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>&#160; <span class="keywordflow">if</span> (v-&gt;MayBePerformed() &amp;&amp; v-&gt;StartMax() != v-&gt;StartMin() &amp;&amp;</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>&#160; !IsPostponed(i) &amp;&amp;</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>&#160; (v-&gt;StartMin() &lt; best_est ||</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>&#160; (v-&gt;StartMin() == best_est &amp;&amp; v-&gt;EndMax() &lt; best_lct))) {</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>&#160; best_est = v-&gt;StartMin();</div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>&#160; best_lct = v-&gt;EndMax();</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>&#160; support = i;</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>&#160; }</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>&#160; }</div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>&#160; <span class="comment">// TODO(user) : remove this crude quadratic loop with</span></div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>&#160; <span class="comment">// reversibles range reduction.</span></div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>&#160; <span class="keywordflow">if</span> (support == -1) { <span class="comment">// All intervals are either fixed or postponed.</span></div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>&#160; UnperformPostponedTaskBefore(<a class="code" href="integral__types_8h.html#a74ea76ea27f48fb1b6e148e1577b3719">kint64max</a>);</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>&#160; <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>&#160; }</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>&#160; UnperformPostponedTaskBefore(best_est);</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>&#160; <span class="keywordflow">return</span> s-&gt;RevAlloc(</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>&#160; <span class="keyword">new</span> ScheduleOrPostpone(vars_[support], best_est, &amp;markers_[support]));</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>&#160; }</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>&#160; </div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>&#160; std::string DebugString()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">&quot;SetTimesForward()&quot;</span>; }</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>&#160; </div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>&#160; <span class="keywordtype">void</span> Accept(ModelVisitor* <span class="keyword">const</span> visitor)<span class="keyword"> const override </span>{</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>&#160; visitor-&gt;BeginVisitExtension(ModelVisitor::kVariableGroupExtension);</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>&#160; visitor-&gt;VisitIntervalArrayArgument(ModelVisitor::kIntervalsArgument,</div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>&#160; vars_);</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>&#160; visitor-&gt;EndVisitExtension(ModelVisitor::kVariableGroupExtension);</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>&#160; }</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>&#160; </div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>&#160; <span class="keywordtype">bool</span> IsPostponed(<span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) {</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>&#160; DCHECK(vars_[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>]-&gt;MayBePerformed());</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>&#160; <span class="keywordflow">return</span> <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>]-&gt;StartMin() &lt;= markers_[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>];</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>&#160; }</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>&#160; </div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>&#160; <span class="keywordtype">void</span> UnperformPostponedTaskBefore(<a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> date) {</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>.size(); ++i) {</div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>&#160; IntervalVar* <span class="keyword">const</span> v = <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>[i];</div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>&#160; <span class="keywordflow">if</span> (v-&gt;MayBePerformed() &amp;&amp; v-&gt;StartMin() != v-&gt;StartMax() &amp;&amp;</div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>&#160; IsPostponed(i) &amp;&amp;</div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>&#160; <span class="comment">// There are two rules here:</span></div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>&#160; <span class="comment">// - v-&gt;StartMax() &lt;= date: the interval should have been scheduled</span></div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>&#160; <span class="comment">// as it cannot be scheduled later (assignment is chronological).</span></div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>&#160; <span class="comment">// - v-&gt;EndMin() &lt;= date: The interval can fit before the current</span></div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>&#160; <span class="comment">// start date. In that case, it &#39;should&#39; always fit, and as it has</span></div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>&#160; <span class="comment">// not be scheduled, then we are missing it. So, as a dominance</span></div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>&#160; <span class="comment">// rule, it should be marked as unperformed.</span></div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>&#160; (v-&gt;EndMin() &lt;= date || v-&gt;StartMax() &lt;= date)) {</div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>&#160; v-&gt;SetPerformed(<span class="keyword">false</span>);</div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>&#160; }</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>&#160; }</div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>&#160; }</div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>&#160; </div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>&#160; <span class="keyword">const</span> std::vector&lt;IntervalVar*&gt; <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>;</div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>&#160; std::vector&lt;int64&gt; markers_;</div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>&#160;};</div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>&#160; </div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>&#160;<span class="comment">// Backward scheduling.</span></div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>&#160;<span class="keyword">class </span>ScheduleOrExpedite : <span class="keyword">public</span> Decision {</div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>&#160; ScheduleOrExpedite(IntervalVar* <span class="keyword">const</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> est, <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a>* <span class="keyword">const</span> marker)</div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>&#160; : var_(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>), est_(est), marker_(marker) {}</div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>&#160; ~ScheduleOrExpedite()<span class="keyword"> override </span>{}</div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>&#160; </div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>&#160; <span class="keywordtype">void</span> Apply(Solver* <span class="keyword">const</span> s)<span class="keyword"> override </span>{</div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>&#160; var_-&gt;SetPerformed(<span class="keyword">true</span>);</div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>&#160; <span class="keywordflow">if</span> (est_.Value() &gt; var_-&gt;EndMax()) {</div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>&#160; est_.SetValue(s, var_-&gt;EndMax());</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>&#160; }</div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>&#160; var_-&gt;SetEndRange(est_.Value(), est_.Value());</div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>&#160; }</div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>&#160; </div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>&#160; <span class="keywordtype">void</span> Refute(Solver* <span class="keyword">const</span> s)<span class="keyword"> override </span>{</div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>&#160; s-&gt;SaveAndSetValue(marker_, est_.Value() - 1);</div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>&#160; }</div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>&#160; </div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>&#160; <span class="keywordtype">void</span> Accept(DecisionVisitor* <span class="keyword">const</span> visitor)<span class="keyword"> const override </span>{</div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>&#160; CHECK(visitor != <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>&#160; visitor-&gt;VisitScheduleOrExpedite(var_, est_.Value());</div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>&#160; }</div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>&#160; </div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>&#160; std::string DebugString()<span class="keyword"> const override </span>{</div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>&#160; <span class="keywordflow">return</span> absl::StrFormat(<span class="stringliteral">&quot;ScheduleOrExpedite(%s at %d)&quot;</span>, var_-&gt;DebugString(),</div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>&#160; est_.Value());</div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>&#160; }</div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>&#160; </div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>&#160; IntervalVar* <span class="keyword">const</span> var_;</div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>&#160; NumericalRev&lt;int64&gt; est_;</div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a>* <span class="keyword">const</span> marker_;</div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>&#160;};</div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>&#160; </div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>&#160;<span class="keyword">class </span>SetTimesBackward : <span class="keyword">public</span> DecisionBuilder {</div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>&#160; <span class="keyword">explicit</span> SetTimesBackward(<span class="keyword">const</span> std::vector&lt;IntervalVar*&gt;&amp; vars)</div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>&#160; : <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>(vars), markers_(vars.size(), <a class="code" href="integral__types_8h.html#a74ea76ea27f48fb1b6e148e1577b3719">kint64max</a>) {}</div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>&#160; </div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>&#160; ~SetTimesBackward()<span class="keyword"> override </span>{}</div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>&#160; </div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>&#160; Decision* Next(Solver* <span class="keyword">const</span> s)<span class="keyword"> override </span>{</div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> best_end = <a class="code" href="integral__types_8h.html#af458164b470cbba416d5ed579e00ff60">kint64min</a>;</div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> best_start = <a class="code" href="integral__types_8h.html#af458164b470cbba416d5ed579e00ff60">kint64min</a>;</div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>&#160; <span class="keywordtype">int</span> support = -1;</div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>&#160; <span class="keywordtype">int</span> refuted = 0;</div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>.size(); ++i) {</div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>&#160; IntervalVar* <span class="keyword">const</span> v = <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>[i];</div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>&#160; <span class="keywordflow">if</span> (v-&gt;MayBePerformed() &amp;&amp; v-&gt;EndMax() &gt; v-&gt;EndMin()) {</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>&#160; <span class="keywordflow">if</span> (v-&gt;EndMax() &lt;= markers_[i] &amp;&amp;</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>&#160; (v-&gt;EndMax() &gt; best_end ||</div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>&#160; (v-&gt;EndMax() == best_end &amp;&amp; v-&gt;StartMin() &gt; best_start))) {</div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>&#160; best_end = v-&gt;EndMax();</div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>&#160; best_start = v-&gt;StartMin();</div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>&#160; support = i;</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>&#160; refuted++;</div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>&#160; }</div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>&#160; }</div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>&#160; }</div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>&#160; <span class="comment">// TODO(user) : remove this crude quadratic loop with</span></div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>&#160; <span class="comment">// reversibles range reduction.</span></div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>&#160; <span class="keywordflow">if</span> (support == -1) {</div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>&#160; <span class="keywordflow">if</span> (refuted == 0) {</div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>&#160; <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>&#160; s-&gt;Fail();</div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>&#160; }</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>&#160; }</div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>&#160; <span class="keywordflow">return</span> s-&gt;RevAlloc(<span class="keyword">new</span> ScheduleOrExpedite(</div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>&#160; vars_[support], vars_[support]-&gt;EndMax(), &amp;markers_[support]));</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>&#160; }</div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>&#160; </div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>&#160; std::string DebugString()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">&quot;SetTimesBackward()&quot;</span>; }</div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>&#160; </div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>&#160; <span class="keywordtype">void</span> Accept(ModelVisitor* <span class="keyword">const</span> visitor)<span class="keyword"> const override </span>{</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>&#160; visitor-&gt;BeginVisitExtension(ModelVisitor::kVariableGroupExtension);</div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>&#160; visitor-&gt;VisitIntervalArrayArgument(ModelVisitor::kIntervalsArgument,</div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>&#160; vars_);</div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>&#160; visitor-&gt;EndVisitExtension(ModelVisitor::kVariableGroupExtension);</div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>&#160; }</div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>&#160; </div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>&#160; <span class="keyword">const</span> std::vector&lt;IntervalVar*&gt; <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>;</div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>&#160; std::vector&lt;int64&gt; markers_;</div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>&#160;};</div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>&#160; </div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span>&#160;<span class="comment">// ----- Decisions and DecisionBuilders on sequences -----</span></div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>&#160; </div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span>&#160;<span class="keyword">class </span>RankFirst : <span class="keyword">public</span> Decision {</div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>&#160; RankFirst(SequenceVar* <span class="keyword">const</span> seq, <span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>)</div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>&#160; : sequence_(seq), index_(<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) {}</div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>&#160; ~RankFirst()<span class="keyword"> override </span>{}</div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>&#160; </div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>&#160; <span class="keywordtype">void</span> Apply(Solver* <span class="keyword">const</span> s)<span class="keyword"> override </span>{ sequence_-&gt;RankFirst(index_); }</div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>&#160; </div>
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>&#160; <span class="keywordtype">void</span> Refute(Solver* <span class="keyword">const</span> s)<span class="keyword"> override </span>{ sequence_-&gt;RankNotFirst(index_); }</div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>&#160; </div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>&#160; <span class="keywordtype">void</span> Accept(DecisionVisitor* <span class="keyword">const</span> visitor)<span class="keyword"> const override </span>{</div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>&#160; CHECK(visitor != <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>&#160; visitor-&gt;VisitRankFirstInterval(sequence_, index_);</div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>&#160; }</div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>&#160; </div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>&#160; std::string DebugString()<span class="keyword"> const override </span>{</div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>&#160; <span class="keywordflow">return</span> absl::StrFormat(<span class="stringliteral">&quot;RankFirst(%s, %d)&quot;</span>, sequence_-&gt;DebugString(),</div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>&#160; index_);</div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>&#160; }</div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>&#160; </div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>&#160; SequenceVar* <span class="keyword">const</span> sequence_;</div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> index_;</div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>&#160;};</div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>&#160; </div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>&#160;<span class="keyword">class </span>RankLast : <span class="keyword">public</span> Decision {</div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>&#160; RankLast(SequenceVar* <span class="keyword">const</span> seq, <span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) : sequence_(seq), index_(<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) {}</div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>&#160; ~RankLast()<span class="keyword"> override </span>{}</div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>&#160; </div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>&#160; <span class="keywordtype">void</span> Apply(Solver* <span class="keyword">const</span> s)<span class="keyword"> override </span>{ sequence_-&gt;RankLast(index_); }</div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>&#160; </div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>&#160; <span class="keywordtype">void</span> Refute(Solver* <span class="keyword">const</span> s)<span class="keyword"> override </span>{ sequence_-&gt;RankNotLast(index_); }</div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>&#160; </div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>&#160; <span class="keywordtype">void</span> Accept(DecisionVisitor* <span class="keyword">const</span> visitor)<span class="keyword"> const override </span>{</div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>&#160; CHECK(visitor != <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>&#160; visitor-&gt;VisitRankLastInterval(sequence_, index_);</div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>&#160; }</div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>&#160; </div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>&#160; std::string DebugString()<span class="keyword"> const override </span>{</div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>&#160; <span class="keywordflow">return</span> absl::StrFormat(<span class="stringliteral">&quot;RankLast(%s, %d)&quot;</span>, sequence_-&gt;DebugString(),</div>
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>&#160; index_);</div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>&#160; }</div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>&#160; </div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>&#160; SequenceVar* <span class="keyword">const</span> sequence_;</div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> index_;</div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>&#160;};</div>
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span>&#160; </div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>&#160;<span class="keyword">class </span>RankFirstIntervalVars : <span class="keyword">public</span> DecisionBuilder {</div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>&#160; RankFirstIntervalVars(<span class="keyword">const</span> std::vector&lt;SequenceVar*&gt;&amp; sequences,</div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>&#160; Solver::SequenceStrategy str)</div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span>&#160; : sequences_(sequences), strategy_(str) {}</div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>&#160; </div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span>&#160; ~RankFirstIntervalVars()<span class="keyword"> override </span>{}</div>
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span>&#160; </div>
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>&#160; Decision* Next(Solver* <span class="keyword">const</span> s)<span class="keyword"> override </span>{</div>
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>&#160; SequenceVar* best_sequence = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span>&#160; best_possible_firsts_.clear();</div>
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span>&#160; <span class="keywordflow">while</span> (<span class="keyword">true</span>) {</div>
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span>&#160; <span class="keywordflow">if</span> (FindSequenceVar(s, &amp;best_sequence)) {</div>
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>&#160; <span class="comment">// No not create a choice point if it is not needed.</span></div>
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span>&#160; DCHECK(best_sequence != <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span>&#160; <span class="keywordflow">if</span> (best_possible_firsts_.size() == 1 &amp;&amp;</div>
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span>&#160; best_sequence-&gt;Interval(best_possible_firsts_.back())</div>
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span>&#160; -&gt;MustBePerformed()) {</div>
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span>&#160; best_sequence-&gt;RankFirst(best_possible_firsts_.back());</div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>&#160; <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>&#160; }</div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span>&#160; <span class="keywordtype">int</span> best_interval = -1;</div>
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span>&#160; <span class="keywordflow">if</span> (!FindIntervalVar(s, best_sequence, &amp;best_interval)) {</div>
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span>&#160; s-&gt;Fail();</div>
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span>&#160; }</div>
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>&#160; CHECK_NE(-1, best_interval);</div>
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span>&#160; <span class="keywordflow">return</span> s-&gt;RevAlloc(<span class="keyword">new</span> RankFirst(best_sequence, best_interval));</div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>&#160; <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span>&#160; }</div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span>&#160; }</div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>&#160; }</div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span>&#160; </div>
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span>&#160; <span class="keywordtype">void</span> Accept(ModelVisitor* <span class="keyword">const</span> visitor)<span class="keyword"> const override </span>{</div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span>&#160; visitor-&gt;BeginVisitExtension(ModelVisitor::kVariableGroupExtension);</div>
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>&#160; visitor-&gt;VisitSequenceArrayArgument(ModelVisitor::kSequencesArgument,</div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>&#160; sequences_);</div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>&#160; visitor-&gt;EndVisitExtension(ModelVisitor::kVariableGroupExtension);</div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span>&#160; }</div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span>&#160; </div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span>&#160; <span class="comment">// Selects the interval var to rank.</span></div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span>&#160; <span class="keywordtype">bool</span> FindIntervalVarOnStartMin(Solver* <span class="keyword">const</span> s,</div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span>&#160; SequenceVar* <span class="keyword">const</span> best_sequence,</div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>&#160; <span class="keywordtype">int</span>* <span class="keyword">const</span> best_interval_index) {</div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>&#160; <span class="keywordtype">int</span> best_interval = -1;</div>
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> best_start_min = <a class="code" href="integral__types_8h.html#a74ea76ea27f48fb1b6e148e1577b3719">kint64max</a>;</div>
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> = 0; <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> &lt; best_possible_firsts_.size(); ++<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) {</div>
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> candidate = best_possible_firsts_[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>];</div>
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>&#160; IntervalVar* <span class="keyword">const</span> <a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a> = best_sequence-&gt;Interval(candidate);</div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>-&gt;StartMin() &lt; best_start_min) {</div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span>&#160; best_interval = candidate;</div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span>&#160; best_start_min = <a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>-&gt;StartMin();</div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>&#160; }</div>
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span>&#160; }</div>
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>&#160; <span class="keywordflow">if</span> (best_interval == -1) {</div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span>&#160; *best_interval_index = best_interval;</div>
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span>&#160; }</div>
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span>&#160; }</div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span>&#160; </div>
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span>&#160; <span class="keywordtype">bool</span> FindIntervalVarRandomly(Solver* <span class="keyword">const</span> s,</div>
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span>&#160; SequenceVar* <span class="keyword">const</span> best_sequence,</div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>&#160; <span class="keywordtype">int</span>* <span class="keyword">const</span> best_interval_index) {</div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>&#160; DCHECK(!best_possible_firsts_.empty());</div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> = s-&gt;Rand32(best_possible_firsts_.size());</div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>&#160; *best_interval_index = best_possible_firsts_[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>];</div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>&#160; }</div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>&#160; </div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span>&#160; <span class="keywordtype">bool</span> FindIntervalVar(Solver* <span class="keyword">const</span> s, SequenceVar* <span class="keyword">const</span> best_sequence,</div>
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>&#160; <span class="keywordtype">int</span>* <span class="keyword">const</span> best_interval_index) {</div>
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span>&#160; <span class="keywordflow">switch</span> (strategy_) {</div>
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>&#160; <span class="keywordflow">case</span> Solver::SEQUENCE_DEFAULT:</div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>&#160; <span class="keywordflow">case</span> Solver::SEQUENCE_SIMPLE:</div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>&#160; <span class="keywordflow">case</span> Solver::CHOOSE_MIN_SLACK_RANK_FORWARD:</div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span>&#160; <span class="keywordflow">return</span> FindIntervalVarOnStartMin(s, best_sequence, best_interval_index);</div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>&#160; <span class="keywordflow">case</span> Solver::CHOOSE_RANDOM_RANK_FORWARD:</div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>&#160; <span class="keywordflow">return</span> FindIntervalVarRandomly(s, best_sequence, best_interval_index);</div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span>&#160; LOG(FATAL) &lt;&lt; <span class="stringliteral">&quot;Unknown strategy &quot;</span> &lt;&lt; strategy_;</div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span>&#160; }</div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>&#160; }</div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span>&#160; </div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>&#160; <span class="comment">// Selects the sequence var to start ranking.</span></div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>&#160; <span class="keywordtype">bool</span> FindSequenceVarOnSlack(Solver* <span class="keyword">const</span> s,</div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>&#160; SequenceVar** <span class="keyword">const</span> best_sequence) {</div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> best_slack = <a class="code" href="integral__types_8h.html#a74ea76ea27f48fb1b6e148e1577b3719">kint64max</a>;</div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> best_ahmin = <a class="code" href="integral__types_8h.html#a74ea76ea27f48fb1b6e148e1577b3719">kint64max</a>;</div>
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span>&#160; *best_sequence = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span>&#160; best_possible_firsts_.clear();</div>
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; sequences_.size(); ++i) {</div>
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span>&#160; SequenceVar* <span class="keyword">const</span> candidate_sequence = sequences_[i];</div>
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span>&#160; <span class="keywordtype">int</span> ranked = 0;</div>
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span>&#160; <span class="keywordtype">int</span> not_ranked = 0;</div>
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>&#160; <span class="keywordtype">int</span> unperformed = 0;</div>
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span>&#160; candidate_sequence-&gt;ComputeStatistics(&amp;ranked, &amp;not_ranked, &amp;unperformed);</div>
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span>&#160; <span class="keywordflow">if</span> (not_ranked &gt; 0) {</div>
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span>&#160; candidate_possible_firsts_.clear();</div>
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span>&#160; candidate_possible_lasts_.clear();</div>
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>&#160; candidate_sequence-&gt;ComputePossibleFirstsAndLasts(</div>
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>&#160; &amp;candidate_possible_firsts_, &amp;candidate_possible_lasts_);</div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>&#160; <span class="comment">// No possible first, failing.</span></div>
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>&#160; <span class="keywordflow">if</span> (candidate_possible_firsts_.empty()) {</div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>&#160; s-&gt;Fail();</div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>&#160; }</div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>&#160; <span class="comment">// Only 1 candidate, and non optional: ranking without branching.</span></div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>&#160; <span class="keywordflow">if</span> (candidate_possible_firsts_.size() == 1 &amp;&amp;</div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>&#160; candidate_sequence-&gt;Interval(candidate_possible_firsts_.back())</div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>&#160; -&gt;MustBePerformed()) {</div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>&#160; *best_sequence = candidate_sequence;</div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>&#160; best_possible_firsts_ = candidate_possible_firsts_;</div>
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>&#160; }</div>
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>&#160; </div>
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span>&#160; <span class="comment">// Evaluating the sequence.</span></div>
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> hmin, hmax, dmin, dmax;</div>
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>&#160; candidate_sequence-&gt;HorizonRange(&amp;hmin, &amp;hmax);</div>
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>&#160; candidate_sequence-&gt;DurationRange(&amp;dmin, &amp;dmax);</div>
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> ahmin, ahmax;</div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>&#160; candidate_sequence-&gt;ActiveHorizonRange(&amp;ahmin, &amp;ahmax);</div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>&#160; <span class="keyword">const</span> <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> current_slack = (hmax - hmin - dmax);</div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>&#160; <span class="keywordflow">if</span> (current_slack &lt; best_slack ||</div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>&#160; (current_slack == best_slack &amp;&amp; ahmin &lt; best_ahmin)) {</div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span>&#160; best_slack = current_slack;</div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>&#160; *best_sequence = candidate_sequence;</div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span>&#160; best_possible_firsts_ = candidate_possible_firsts_;</div>
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span>&#160; best_ahmin = ahmin;</div>
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>&#160; }</div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>&#160; }</div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>&#160; }</div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>&#160; <span class="keywordflow">return</span> *best_sequence != <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span>&#160; }</div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span>&#160; </div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span>&#160; <span class="keywordtype">bool</span> FindSequenceVarRandomly(Solver* <span class="keyword">const</span> s,</div>
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span>&#160; SequenceVar** <span class="keyword">const</span> best_sequence) {</div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>&#160; std::vector&lt;SequenceVar*&gt; all_candidates;</div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>&#160; std::vector&lt;std::vector&lt;int&gt;&gt; all_possible_firsts;</div>
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; sequences_.size(); ++i) {</div>
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span>&#160; SequenceVar* <span class="keyword">const</span> candidate_sequence = sequences_[i];</div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>&#160; <span class="keywordtype">int</span> ranked = 0;</div>
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>&#160; <span class="keywordtype">int</span> not_ranked = 0;</div>
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>&#160; <span class="keywordtype">int</span> unperformed = 0;</div>
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>&#160; candidate_sequence-&gt;ComputeStatistics(&amp;ranked, &amp;not_ranked, &amp;unperformed);</div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span>&#160; <span class="keywordflow">if</span> (not_ranked &gt; 0) {</div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>&#160; candidate_possible_firsts_.clear();</div>
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>&#160; candidate_possible_lasts_.clear();</div>
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span>&#160; candidate_sequence-&gt;ComputePossibleFirstsAndLasts(</div>
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span>&#160; &amp;candidate_possible_firsts_, &amp;candidate_possible_lasts_);</div>
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>&#160; <span class="comment">// No possible first, failing.</span></div>
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>&#160; <span class="keywordflow">if</span> (candidate_possible_firsts_.empty()) {</div>
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span>&#160; s-&gt;Fail();</div>
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>&#160; }</div>
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span>&#160; <span class="comment">// Only 1 candidate, and non optional: ranking without branching.</span></div>
<div class="line"><a name="l00792"></a><span class="lineno"> 792</span>&#160; <span class="keywordflow">if</span> (candidate_possible_firsts_.size() == 1 &amp;&amp;</div>
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span>&#160; candidate_sequence-&gt;Interval(candidate_possible_firsts_.back())</div>
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span>&#160; -&gt;MustBePerformed()) {</div>
<div class="line"><a name="l00795"></a><span class="lineno"> 795</span>&#160; *best_sequence = candidate_sequence;</div>
<div class="line"><a name="l00796"></a><span class="lineno"> 796</span>&#160; best_possible_firsts_ = candidate_possible_firsts_;</div>
<div class="line"><a name="l00797"></a><span class="lineno"> 797</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00798"></a><span class="lineno"> 798</span>&#160; }</div>
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span>&#160; </div>
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span>&#160; all_candidates.push_back(candidate_sequence);</div>
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span>&#160; all_possible_firsts.push_back(candidate_possible_firsts_);</div>
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span>&#160; }</div>
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span>&#160; }</div>
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>&#160; <span class="keywordflow">if</span> (all_candidates.empty()) {</div>
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>&#160; }</div>
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> chosen = s-&gt;Rand32(all_candidates.size());</div>
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span>&#160; *best_sequence = all_candidates[chosen];</div>
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span>&#160; best_possible_firsts_ = all_possible_firsts[chosen];</div>
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span>&#160; }</div>
<div class="line"><a name="l00812"></a><span class="lineno"> 812</span>&#160; </div>
<div class="line"><a name="l00813"></a><span class="lineno"> 813</span>&#160; <span class="keywordtype">bool</span> FindSequenceVar(Solver* <span class="keyword">const</span> s, SequenceVar** <span class="keyword">const</span> best_sequence) {</div>
<div class="line"><a name="l00814"></a><span class="lineno"> 814</span>&#160; <span class="keywordflow">switch</span> (strategy_) {</div>
<div class="line"><a name="l00815"></a><span class="lineno"> 815</span>&#160; <span class="keywordflow">case</span> Solver::SEQUENCE_DEFAULT:</div>
<div class="line"><a name="l00816"></a><span class="lineno"> 816</span>&#160; <span class="keywordflow">case</span> Solver::SEQUENCE_SIMPLE:</div>
<div class="line"><a name="l00817"></a><span class="lineno"> 817</span>&#160; <span class="keywordflow">case</span> Solver::CHOOSE_MIN_SLACK_RANK_FORWARD:</div>
<div class="line"><a name="l00818"></a><span class="lineno"> 818</span>&#160; <span class="keywordflow">return</span> FindSequenceVarOnSlack(s, best_sequence);</div>
<div class="line"><a name="l00819"></a><span class="lineno"> 819</span>&#160; <span class="keywordflow">case</span> Solver::CHOOSE_RANDOM_RANK_FORWARD:</div>
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span>&#160; <span class="keywordflow">return</span> FindSequenceVarRandomly(s, best_sequence);</div>
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span>&#160; LOG(FATAL) &lt;&lt; <span class="stringliteral">&quot;Unknown strategy &quot;</span> &lt;&lt; strategy_;</div>
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>&#160; }</div>
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span>&#160; }</div>
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>&#160; </div>
<div class="line"><a name="l00826"></a><span class="lineno"> 826</span>&#160; <span class="keyword">const</span> std::vector&lt;SequenceVar*&gt; sequences_;</div>
<div class="line"><a name="l00827"></a><span class="lineno"> 827</span>&#160; <span class="keyword">const</span> Solver::SequenceStrategy strategy_;</div>
<div class="line"><a name="l00828"></a><span class="lineno"> 828</span>&#160; std::vector&lt;int&gt; best_possible_firsts_;</div>
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span>&#160; std::vector&lt;int&gt; candidate_possible_firsts_;</div>
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>&#160; std::vector&lt;int&gt; candidate_possible_lasts_;</div>
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>&#160;};</div>
<div class="line"><a name="l00832"></a><span class="lineno"> 832</span>&#160;} <span class="comment">// namespace</span></div>
<div class="line"><a name="l00833"></a><span class="lineno"> 833</span>&#160; </div>
<div class="line"><a name="l00834"></a><span class="lineno"> 834</span>&#160;Decision* Solver::MakeScheduleOrPostpone(IntervalVar* <span class="keyword">const</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> est,</div>
<div class="line"><a name="l00835"></a><span class="lineno"> 835</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a>* <span class="keyword">const</span> marker) {</div>
<div class="line"><a name="l00836"></a><span class="lineno"> 836</span>&#160; CHECK(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> != <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00837"></a><span class="lineno"> 837</span>&#160; CHECK(marker != <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00838"></a><span class="lineno"> 838</span>&#160; <span class="keywordflow">return</span> RevAlloc(<span class="keyword">new</span> ScheduleOrPostpone(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, est, marker));</div>
<div class="line"><a name="l00839"></a><span class="lineno"> 839</span>&#160;}</div>
<div class="line"><a name="l00840"></a><span class="lineno"> 840</span>&#160; </div>
<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>&#160;Decision* Solver::MakeScheduleOrExpedite(IntervalVar* <span class="keyword">const</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> est,</div>
<div class="line"><a name="l00842"></a><span class="lineno"> 842</span>&#160; <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a>* <span class="keyword">const</span> marker) {</div>
<div class="line"><a name="l00843"></a><span class="lineno"> 843</span>&#160; CHECK(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> != <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span>&#160; CHECK(marker != <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span>&#160; <span class="keywordflow">return</span> RevAlloc(<span class="keyword">new</span> ScheduleOrExpedite(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, est, marker));</div>
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span>&#160;}</div>
<div class="line"><a name="l00847"></a><span class="lineno"> 847</span>&#160; </div>
<div class="line"><a name="l00848"></a><span class="lineno"> 848</span>&#160;DecisionBuilder* Solver::MakePhase(<span class="keyword">const</span> std::vector&lt;IntervalVar*&gt;&amp; intervals,</div>
<div class="line"><a name="l00849"></a><span class="lineno"> 849</span>&#160; IntervalStrategy str) {</div>
<div class="line"><a name="l00850"></a><span class="lineno"> 850</span>&#160; <span class="keywordflow">switch</span> (str) {</div>
<div class="line"><a name="l00851"></a><span class="lineno"> 851</span>&#160; <span class="keywordflow">case</span> Solver::INTERVAL_DEFAULT:</div>
<div class="line"><a name="l00852"></a><span class="lineno"> 852</span>&#160; <span class="keywordflow">case</span> Solver::INTERVAL_SIMPLE:</div>
<div class="line"><a name="l00853"></a><span class="lineno"> 853</span>&#160; <span class="keywordflow">case</span> Solver::INTERVAL_SET_TIMES_FORWARD:</div>
<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>&#160; <span class="keywordflow">return</span> RevAlloc(<span class="keyword">new</span> SetTimesForward(intervals));</div>
<div class="line"><a name="l00855"></a><span class="lineno"> 855</span>&#160; <span class="keywordflow">case</span> Solver::INTERVAL_SET_TIMES_BACKWARD:</div>
<div class="line"><a name="l00856"></a><span class="lineno"> 856</span>&#160; <span class="keywordflow">return</span> RevAlloc(<span class="keyword">new</span> SetTimesBackward(intervals));</div>
<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>&#160; LOG(FATAL) &lt;&lt; <span class="stringliteral">&quot;Unknown strategy &quot;</span> &lt;&lt; str;</div>
<div class="line"><a name="l00859"></a><span class="lineno"> 859</span>&#160; }</div>
<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>&#160;}</div>
<div class="line"><a name="l00861"></a><span class="lineno"> 861</span>&#160; </div>
<div class="line"><a name="l00862"></a><span class="lineno"> 862</span>&#160;Decision* Solver::MakeRankFirstInterval(SequenceVar* <span class="keyword">const</span> sequence,</div>
<div class="line"><a name="l00863"></a><span class="lineno"> 863</span>&#160; <span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) {</div>
<div class="line"><a name="l00864"></a><span class="lineno"> 864</span>&#160; CHECK(sequence != <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00865"></a><span class="lineno"> 865</span>&#160; <span class="keywordflow">return</span> RevAlloc(<span class="keyword">new</span> RankFirst(sequence, <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>));</div>
<div class="line"><a name="l00866"></a><span class="lineno"> 866</span>&#160;}</div>
<div class="line"><a name="l00867"></a><span class="lineno"> 867</span>&#160; </div>
<div class="line"><a name="l00868"></a><span class="lineno"> 868</span>&#160;Decision* Solver::MakeRankLastInterval(SequenceVar* <span class="keyword">const</span> sequence, <span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) {</div>
<div class="line"><a name="l00869"></a><span class="lineno"> 869</span>&#160; CHECK(sequence != <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00870"></a><span class="lineno"> 870</span>&#160; <span class="keywordflow">return</span> RevAlloc(<span class="keyword">new</span> RankLast(sequence, <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>));</div>
<div class="line"><a name="l00871"></a><span class="lineno"> 871</span>&#160;}</div>
<div class="line"><a name="l00872"></a><span class="lineno"> 872</span>&#160; </div>
<div class="line"><a name="l00873"></a><span class="lineno"> 873</span>&#160;DecisionBuilder* Solver::MakePhase(<span class="keyword">const</span> std::vector&lt;SequenceVar*&gt;&amp; sequences,</div>
<div class="line"><a name="l00874"></a><span class="lineno"> 874</span>&#160; SequenceStrategy str) {</div>
<div class="line"><a name="l00875"></a><span class="lineno"> 875</span>&#160; <span class="keywordflow">return</span> RevAlloc(<span class="keyword">new</span> RankFirstIntervalVars(sequences, str));</div>
<div class="line"><a name="l00876"></a><span class="lineno"> 876</span>&#160;}</div>
<div class="line"><a name="l00877"></a><span class="lineno"> 877</span>&#160; </div>
<div class="line"><a name="l00878"></a><span class="lineno"> 878</span>&#160;} <span class="comment">// namespace operations_research</span></div>
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<div class="ttc" id="anamespaceoperations__research_html"><div class="ttname"><a href="namespaceoperations__research.html">operations_research</a></div><div class="ttdoc">The vehicle routing library lets one model and solve generic vehicle routing problems ranging from th...</div><div class="ttdef"><b>Definition:</b> <a href="dense__doubly__linked__list_8h_source.html#l00021">dense_doubly_linked_list.h:21</a></div></div>
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<div class="ttc" id="adefault__search_8cc_html_ac673bc430bdc3fdaa09f7becf98ef267"><div class="ttname"><a href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a></div><div class="ttdeci">const std::string name</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l00807">default_search.cc:807</a></div></div>
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