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<a href="decision__engine_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*****************************************************************************/</span><span class="comment"></span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">/*!</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * \file decision_engine.h</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * </span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * Author: Clark Barrett</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * </span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * Created: Fri Jul 11 13:04:25 2003</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * <hr></span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * License to use, copy, modify, sell and/or distribute this software</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * and its documentation for any purpose is hereby granted without</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * royalty, subject to the terms and conditions defined in the \ref</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * LICENSE file provided with this distribution.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * </span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * <hr></span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * </span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">/*****************************************************************************/</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#ifndef _cvc3__search__decision_engine_h_</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor"></span><span class="preprocessor">#define _cvc3__search__decision_engine_h_</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "<a class="code" href="statistics_8h.html" title="Description: Counters and flags for collecting run-time statistics.">statistics.h</a>"</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "<a class="code" href="search__fast_8h.html">search_fast.h</a>"</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">namespace </span>CVC3 {</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div>
<div class="line"><a name="l00029"></a><span class="lineno"><a class="code" href="classCVC3_1_1DecisionEngine.html"> 29</a></span> <span class="keyword">class </span><a class="code" href="classCVC3_1_1DecisionEngine.html">DecisionEngine</a> {</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="comment">/***************************************************************************/</span><span class="comment"></span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> /*!</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> *\defgroup DE Decision Engine</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> *\brief Decision Engine, used by Search Engine</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> *\ingroup SE</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> *@{</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="comment">/***************************************************************************/</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00041"></a><span class="lineno"><a class="code" href="group__DE.html#gaea6842e7db1a4cb203d8a6da726b52ed"> 41</a></span>  <a class="code" href="classCVC3_1_1TheoryCore.html" title="This theory handles the built-in logical connectives plus equality. It also handles the registration ...">TheoryCore</a>* <a class="code" href="group__DE.html#gaea6842e7db1a4cb203d8a6da726b52ed" title="Pointer to core theory.">d_core</a>; <span class="comment">//!< Pointer to core theory</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"><a class="code" href="group__DE.html#ga11d61d4a7d9938dd4c72ffe564dc9cb7"> 42</a></span> <span class="comment"></span> <a class="code" href="classCVC3_1_1SearchImplBase.html" title="API to to a generic proof search engine (a.k.a. SAT solver)">SearchImplBase</a>* <a class="code" href="group__DE.html#ga11d61d4a7d9938dd4c72ffe564dc9cb7" title="Pointer to search engine.">d_se</a>; <span class="comment">//!< Pointer to search engine</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"></span><span class="comment"></span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> //! List of currently active splitters</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"><a class="code" href="group__DE.html#gaf662ad88359f7ce623ffe35ebc6d74ef"> 45</a></span> <span class="comment"></span> <a class="code" href="classCVC3_1_1CDList.html">CDList<Expr></a> <a class="code" href="group__DE.html#gaf662ad88359f7ce623ffe35ebc6d74ef" title="List of currently active splitters.">d_splitters</a>;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"></span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> //! Total number of splitters</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"><a class="code" href="group__DE.html#gae9092ccb020b756b56556eb57a7af5ab"> 48</a></span> <span class="comment"></span> <a class="code" href="classCVC3_1_1StatCounter.html">StatCounter</a> <a class="code" href="group__DE.html#gae9092ccb020b756b56556eb57a7af5ab" title="Total number of splitters.">d_splitterCount</a>;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div>
<div class="line"><a name="l00050"></a><span class="lineno"><a class="code" href="group__DE.html#ga922651f82bf5dec8e9f6d7211507a6fd"> 50</a></span>  <a class="code" href="classCVC3_1_1ExprMap.html">ExprMap<Expr></a> <a class="code" href="group__DE.html#ga922651f82bf5dec8e9f6d7211507a6fd">d_bestByExpr</a>;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"></span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"> //! Visited cache for findSplitterRec traversal. </span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"></span><span class="comment"> /*! Must be emptied in every findSplitter() call. */</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"><a class="code" href="group__DE.html#gab9a86f01371ea2ef051119f0e414727b"> 54</a></span>  <a class="code" href="classCVC3_1_1ExprMap.html">ExprMap<Expr></a> <a class="code" href="group__DE.html#gab9a86f01371ea2ef051119f0e414727b" title="Visited cache for findSplitterRec traversal.">d_visited</a>;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> <a class="code" href="group__DE.html#ga5974aad82f7244de1ce9a49969b2d57d">findSplitterRec</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e);</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code" href="group__DE.html#gaaa431eec1b04f02c8a7573d34616158b">isBetter</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e1, <span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e2) = 0;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <a class="code" href="group__DE.html#gae0864ba9d167d33e9d1c1ed4416a76fd">DecisionEngine</a>(<a class="code" href="classCVC3_1_1TheoryCore.html" title="This theory handles the built-in logical connectives plus equality. It also handles the registration ...">TheoryCore</a>* core, <a class="code" href="classCVC3_1_1SearchImplBase.html" title="API to to a generic proof search engine (a.k.a. SAT solver)">SearchImplBase</a>* se);</div>
<div class="line"><a name="l00061"></a><span class="lineno"><a class="code" href="group__DE.html#ga55c5dee7b559b90e9d0c3fd8aa7c70b2"> 61</a></span>  <span class="keyword">virtual</span> <a class="code" href="group__DE.html#ga55c5dee7b559b90e9d0c3fd8aa7c70b2">~DecisionEngine</a>() { }</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"></span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"> /*! @brief Finds a splitter inside a non const expression.</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> The expression passed in must not be a boolean constant,</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> otherwise a DebugAssert will occur. \return Null Expr if passed</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"> in a Null Expr. */</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">virtual</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> <a class="code" href="group__DE.html#ga6f191a7f4edb645e8df7c1f005a50bf8" title="Finds a splitter inside a non const expression. The expression passed in must not be a boolean consta...">findSplitter</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e) = 0;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"></span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> //! Push context and record the splitter</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="group__DE.html#ga03a83031c2361cce4e8ce952842973be" title="Push context and record the splitter.">pushDecision</a>(<a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> splitter, <span class="keywordtype">bool</span> whichCase=<span class="keyword">true</span>);<span class="comment"></span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"> //! Pop last decision (and context)</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="group__DE.html#ga96c0e5c796d102da129381dd12595e8a" title="Pop last decision (and context)">popDecision</a>();<span class="comment"></span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> //! Pop to given scope</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="group__DE.html#ga90d2e881c4cc004754708ee579682d85" title="Pop to given scope.">popTo</a>(<span class="keywordtype">int</span> dl);</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"></span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"> //! Return the last known splitter.</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"></span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> <a class="code" href="group__DE.html#ga5b67011c3ea03780faf2071d5085a544" title="Return the last known splitter.">lastSplitter</a>();</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"></span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"> //! Search should call this when it derives 'false'</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="group__DE.html#ga7910d09d94bd27c02f53a3f7e0a9af00" title="Search should call this when it derives 'false'.">goalSatisfied</a>() = 0;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"></span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"> /*@}*/</span> <span class="comment">// End of DE group</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> };</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> }</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="preprocessor">#endif</span></div>
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