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200ms;filter:grayscale(100%);}.pdoc .attribution:hover{opacity:1;filter:grayscale(0%);}.pdoc .attribution img{margin-left:5px;height:35px;vertical-align:middle;width:70px;transition:all 200ms;}.pdoc table{display:block;width:max-content;max-width:100%;overflow:auto;margin-bottom:1rem;}.pdoc table th{font-weight:600;}.pdoc table th, .pdoc table td{padding:6px 13px;border:1px solid var(--accent2);}</style> + <style>/*! custom.css */</style></head> +<body> + <nav class="pdoc"> + <label id="navtoggle" for="togglestate" class="pdoc-button"><svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'><path stroke-linecap='round' stroke="currentColor" stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/></svg></label> + <input id="togglestate" type="checkbox" aria-hidden="true" tabindex="-1"> + <div> <a class="pdoc-button module-list-button" href="../optimizer.html"> +<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-box-arrow-in-left" viewBox="0 0 16 16"> + <path fill-rule="evenodd" d="M10 3.5a.5.5 0 0 0-.5-.5h-8a.5.5 0 0 0-.5.5v9a.5.5 0 0 0 .5.5h8a.5.5 0 0 0 .5-.5v-2a.5.5 0 0 1 1 0v2A1.5 1.5 0 0 1 9.5 14h-8A1.5 1.5 0 0 1 0 12.5v-9A1.5 1.5 0 0 1 1.5 2h8A1.5 1.5 0 0 1 11 3.5v2a.5.5 0 0 1-1 0v-2z"/> + <path fill-rule="evenodd" d="M4.146 8.354a.5.5 0 0 1 0-.708l3-3a.5.5 0 1 1 .708.708L5.707 7.5H14.5a.5.5 0 0 1 0 1H5.707l2.147 2.146a.5.5 0 0 1-.708.708l-3-3z"/> +</svg> sqlglot.optimizer</a> + + + <input type="search" placeholder="Search..." role="searchbox" aria-label="search" + pattern=".+" required> + + + + <h2>API Documentation</h2> + <ul class="memberlist"> + <li> + <a class="function" href="#simplify">simplify</a> + </li> + <li> + <a class="function" href="#rewrite_between">rewrite_between</a> + </li> + <li> + <a class="function" href="#simplify_not">simplify_not</a> + </li> + <li> + <a class="function" href="#flatten">flatten</a> + </li> + <li> + <a class="function" href="#simplify_connectors">simplify_connectors</a> + </li> + <li> + <a class="function" href="#remove_compliments">remove_compliments</a> + </li> + <li> + <a class="function" href="#uniq_sort">uniq_sort</a> + </li> + <li> + <a class="function" href="#absorb_and_eliminate">absorb_and_eliminate</a> + </li> + <li> + <a class="function" href="#simplify_literals">simplify_literals</a> + </li> + <li> + <a class="function" href="#simplify_parens">simplify_parens</a> + </li> + <li> + <a class="function" href="#remove_where_true">remove_where_true</a> + </li> + <li> + <a class="function" href="#always_true">always_true</a> + </li> + <li> + <a class="function" href="#is_complement">is_complement</a> + </li> + <li> + <a class="function" href="#eval_boolean">eval_boolean</a> + </li> + <li> + <a class="function" href="#extract_date">extract_date</a> + </li> + <li> + <a class="function" href="#extract_interval">extract_interval</a> + </li> + <li> + <a class="function" href="#date_literal">date_literal</a> + </li> + <li> + <a class="function" href="#boolean_literal">boolean_literal</a> + </li> + </ul> + + + <footer>Copyright (c) 2023 Toby Mao</footer> + + <a class="attribution" title="pdoc: Python API documentation generator" href="https://pdoc.dev" target="_blank"> + built with <span class="visually-hidden">pdoc</span><img + alt="pdoc logo" + 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+ </a> +</div> + </nav> + <main class="pdoc"> + <section class="module-info"> + <a class="pdoc-button git-button" href="https://github.com/tobymao/sqlglot/tree/main/sqlglot/optimizer/simplify.py">Edit on GitHub</a> + <h1 class="modulename"> +<a href="./../../sqlglot.html">sqlglot</a><wbr>.<a href="./../optimizer.html">optimizer</a><wbr>.simplify </h1> + + + <input id="mod-simplify-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> + + <label class="view-source-button" for="mod-simplify-view-source"><span>View Source</span></label> + + <div class="pdoc-code codehilite"><pre><span></span><span id="L-1"><a href="#L-1"><span class="linenos"> 1</span></a><span class="kn">import</span> <span class="nn">datetime</span> +</span><span id="L-2"><a href="#L-2"><span class="linenos"> 2</span></a><span class="kn">import</span> <span class="nn">functools</span> +</span><span id="L-3"><a href="#L-3"><span class="linenos"> 3</span></a><span class="kn">import</span> <span class="nn">itertools</span> +</span><span id="L-4"><a href="#L-4"><span class="linenos"> 4</span></a><span class="kn">from</span> <span class="nn">collections</span> <span class="kn">import</span> <span class="n">deque</span> +</span><span id="L-5"><a href="#L-5"><span class="linenos"> 5</span></a><span class="kn">from</span> <span class="nn">decimal</span> <span class="kn">import</span> <span class="n">Decimal</span> +</span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a> +</span><span id="L-7"><a href="#L-7"><span class="linenos"> 7</span></a><span class="kn">from</span> <span class="nn">sqlglot</span> <span class="kn">import</span> <span class="n">exp</span> +</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a><span class="kn">from</span> <span class="nn">sqlglot.expressions</span> <span class="kn">import</span> <span class="n">FALSE</span><span class="p">,</span> <span class="n">NULL</span><span class="p">,</span> <span class="n">TRUE</span> +</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a><span class="kn">from</span> <span class="nn">sqlglot.generator</span> <span class="kn">import</span> <span class="n">Generator</span> +</span><span id="L-10"><a href="#L-10"><span class="linenos"> 10</span></a><span class="kn">from</span> <span class="nn">sqlglot.helper</span> <span class="kn">import</span> <span class="n">first</span><span class="p">,</span> <span class="n">while_changing</span> +</span><span id="L-11"><a href="#L-11"><span class="linenos"> 11</span></a> +</span><span id="L-12"><a href="#L-12"><span class="linenos"> 12</span></a><span class="n">GENERATOR</span> <span class="o">=</span> <span class="n">Generator</span><span class="p">(</span><span class="n">normalize</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">identify</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="L-13"><a href="#L-13"><span class="linenos"> 13</span></a> +</span><span id="L-14"><a href="#L-14"><span class="linenos"> 14</span></a> +</span><span id="L-15"><a href="#L-15"><span class="linenos"> 15</span></a><span class="k">def</span> <span class="nf">simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-16"><a href="#L-16"><span class="linenos"> 16</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-17"><a href="#L-17"><span class="linenos"> 17</span></a><span class="sd"> Rewrite sqlglot AST to simplify expressions.</span> +</span><span id="L-18"><a href="#L-18"><span class="linenos"> 18</span></a> +</span><span id="L-19"><a href="#L-19"><span class="linenos"> 19</span></a><span class="sd"> Example:</span> +</span><span id="L-20"><a href="#L-20"><span class="linenos"> 20</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="L-21"><a href="#L-21"><span class="linenos"> 21</span></a><span class="sd"> >>> expression = sqlglot.parse_one("TRUE AND TRUE")</span> +</span><span id="L-22"><a href="#L-22"><span class="linenos"> 22</span></a><span class="sd"> >>> simplify(expression).sql()</span> +</span><span id="L-23"><a href="#L-23"><span class="linenos"> 23</span></a><span class="sd"> 'TRUE'</span> +</span><span id="L-24"><a href="#L-24"><span class="linenos"> 24</span></a> +</span><span id="L-25"><a href="#L-25"><span class="linenos"> 25</span></a><span class="sd"> Args:</span> +</span><span id="L-26"><a href="#L-26"><span class="linenos"> 26</span></a><span class="sd"> expression (sqlglot.Expression): expression to simplify</span> +</span><span id="L-27"><a href="#L-27"><span class="linenos"> 27</span></a><span class="sd"> Returns:</span> +</span><span id="L-28"><a href="#L-28"><span class="linenos"> 28</span></a><span class="sd"> sqlglot.Expression: simplified expression</span> +</span><span id="L-29"><a href="#L-29"><span class="linenos"> 29</span></a><span class="sd"> """</span> +</span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a> +</span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a> <span class="k">def</span> <span class="nf">_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">expression</span> +</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">rewrite_between</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">uniq_sort</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">absorb_and_eliminate</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">replace_children</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">_simplify</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="kc">False</span><span class="p">))</span> +</span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_not</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">flatten</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_connectors</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">remove_compliments</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">parent</span> +</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_literals</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_parens</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="k">if</span> <span class="n">root</span><span class="p">:</span> +</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="k">return</span> <span class="n">node</span> +</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> +</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">while_changing</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify</span><span class="p">)</span> +</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="n">remove_where_true</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> +</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> +</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a><span class="k">def</span> <span class="nf">rewrite_between</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span> +</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a><span class="w"> </span><span class="sd">"""Rewrite x between y and z to x >= y AND x <= z.</span> +</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> +</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a><span class="sd"> This is done because comparison simplification is only done on lt/lte/gt/gte.</span> +</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a><span class="sd"> """</span> +</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Between</span><span class="p">):</span> +</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span> +</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"low"</span><span class="p">]),</span> +</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"high"</span><span class="p">]),</span> +</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> <span class="p">)</span> +</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> +</span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a> +</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a><span class="k">def</span> <span class="nf">simplify_not</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a><span class="sd"> Demorgan's Law</span> +</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a><span class="sd"> NOT (x OR y) -> NOT x AND NOT y</span> +</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a><span class="sd"> NOT (x AND y) -> NOT x OR NOT y</span> +</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a><span class="sd"> """</span> +</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span> +</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Null</span><span class="p">):</span> +</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">):</span> +</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> <span class="n">condition</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> +</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">):</span> +</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">left</span><span class="p">),</span> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">right</span><span class="p">))</span> +</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span> +</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">left</span><span class="p">),</span> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">right</span><span class="p">))</span> +</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Null</span><span class="p">):</span> +</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">):</span> +</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">:</span> +</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span> +</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="c1"># double negation</span> +</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="c1"># NOT NOT x -> x</span> +</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> +</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> +</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a><span class="k">def</span> <span class="nf">flatten</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a><span class="sd"> A AND (B AND C) -> A AND B AND C</span> +</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a><span class="sd"> A OR (B OR C) -> A OR B OR C</span> +</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a><span class="sd"> """</span> +</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> +</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="n">child</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> +</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">child</span><span class="p">,</span> <span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">):</span> +</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> <span class="n">node</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">child</span><span class="p">)</span> +</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a> +</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a> +</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a><span class="k">def</span> <span class="nf">simplify_connectors</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> <span class="k">def</span> <span class="nf">_simplify_connectors</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">):</span> +</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> <span class="k">if</span> <span class="n">left</span> <span class="o">==</span> <span class="n">right</span><span class="p">:</span> +</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> <span class="k">return</span> <span class="n">left</span> +</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">):</span> +</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> <span class="k">if</span> <span class="n">FALSE</span> <span class="ow">in</span> <span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">):</span> +</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="k">if</span> <span class="n">NULL</span> <span class="ow">in</span> <span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">):</span> +</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">):</span> +</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="k">return</span> <span class="n">right</span> +</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> <span class="k">return</span> <span class="n">left</span> +</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="k">return</span> <span class="n">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">)</span> +</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span> +</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">or</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="k">if</span> <span class="n">left</span> <span class="o">==</span> <span class="n">FALSE</span> <span class="ow">and</span> <span class="n">right</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">:</span> +</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="k">if</span> <span class="p">(</span> +</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="p">(</span><span class="n">left</span> <span class="o">==</span> <span class="n">NULL</span> <span class="ow">and</span> <span class="n">right</span> <span class="o">==</span> <span class="n">NULL</span><span class="p">)</span> +</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="ow">or</span> <span class="p">(</span><span class="n">left</span> <span class="o">==</span> <span class="n">NULL</span> <span class="ow">and</span> <span class="n">right</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">)</span> +</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="ow">or</span> <span class="p">(</span><span class="n">left</span> <span class="o">==</span> <span class="n">FALSE</span> <span class="ow">and</span> <span class="n">right</span> <span class="o">==</span> <span class="n">NULL</span><span class="p">)</span> +</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="p">):</span> +</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="k">if</span> <span class="n">left</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">:</span> +</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="k">return</span> <span class="n">right</span> +</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="k">if</span> <span class="n">right</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">:</span> +</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> <span class="k">return</span> <span class="n">left</span> +</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="k">return</span> <span class="n">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">,</span> <span class="n">or_</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> +</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> <span class="k">return</span> <span class="n">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify_connectors</span><span class="p">)</span> +</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> +</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> +</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a><span class="n">LT_LTE</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">)</span> +</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a><span class="n">GT_GTE</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">)</span> +</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> +</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a><span class="n">COMPARISONS</span> <span class="o">=</span> <span class="p">(</span> +</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="o">*</span><span class="n">LT_LTE</span><span class="p">,</span> +</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="o">*</span><span class="n">GT_GTE</span><span class="p">,</span> +</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">,</span> +</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">,</span> +</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a><span class="p">)</span> +</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> +</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a><span class="n">INVERSE_COMPARISONS</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">,</span> +</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">,</span> +</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">,</span> +</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">,</span> +</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a><span class="p">}</span> +</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> +</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a> +</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a><span class="k">def</span> <span class="nf">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">,</span> <span class="n">or_</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">COMPARISONS</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">right</span><span class="p">,</span> <span class="n">COMPARISONS</span><span class="p">):</span> +</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> <span class="n">ll</span><span class="p">,</span> <span class="n">lr</span> <span class="o">=</span> <span class="n">left</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> +</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> <span class="n">rl</span><span class="p">,</span> <span class="n">rr</span> <span class="o">=</span> <span class="n">right</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> +</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a> +</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> <span class="n">largs</span> <span class="o">=</span> <span class="p">{</span><span class="n">ll</span><span class="p">,</span> <span class="n">lr</span><span class="p">}</span> +</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="n">rargs</span> <span class="o">=</span> <span class="p">{</span><span class="n">rl</span><span class="p">,</span> <span class="n">rr</span><span class="p">}</span> +</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a> +</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> <span class="n">matching</span> <span class="o">=</span> <span class="n">largs</span> <span class="o">&</span> <span class="n">rargs</span> +</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">m</span> <span class="k">for</span> <span class="n">m</span> <span class="ow">in</span> <span class="n">matching</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">m</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">)}</span> +</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> +</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> <span class="k">if</span> <span class="n">matching</span> <span class="ow">and</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> <span class="k">try</span><span class="p">:</span> +</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> <span class="n">l</span> <span class="o">=</span> <span class="n">first</span><span class="p">(</span><span class="n">largs</span> <span class="o">-</span> <span class="n">columns</span><span class="p">)</span> +</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a> <span class="n">r</span> <span class="o">=</span> <span class="n">first</span><span class="p">(</span><span class="n">rargs</span> <span class="o">-</span> <span class="n">columns</span><span class="p">)</span> +</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="k">except</span> <span class="ne">StopIteration</span><span class="p">:</span> +</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> +</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> <span class="c1"># make sure the comparison is always of the form x > 1 instead of 1 < x</span> +</span><span id="L-182"><a href="#L-182"><span class="linenos">182</span></a> <span class="k">if</span> <span class="n">left</span><span class="o">.</span><span class="vm">__class__</span> <span class="ow">in</span> <span class="n">INVERSE_COMPARISONS</span> <span class="ow">and</span> <span class="n">l</span> <span class="o">==</span> <span class="n">ll</span><span class="p">:</span> +</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="n">left</span> <span class="o">=</span> <span class="n">INVERSE_COMPARISONS</span><span class="p">[</span><span class="n">left</span><span class="o">.</span><span class="vm">__class__</span><span class="p">](</span><span class="n">this</span><span class="o">=</span><span class="n">lr</span><span class="p">,</span> <span class="n">expression</span><span class="o">=</span><span class="n">ll</span><span class="p">)</span> +</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> <span class="k">if</span> <span class="n">right</span><span class="o">.</span><span class="vm">__class__</span> <span class="ow">in</span> <span class="n">INVERSE_COMPARISONS</span> <span class="ow">and</span> <span class="n">r</span> <span class="o">==</span> <span class="n">rl</span><span class="p">:</span> +</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> <span class="n">right</span> <span class="o">=</span> <span class="n">INVERSE_COMPARISONS</span><span class="p">[</span><span class="n">right</span><span class="o">.</span><span class="vm">__class__</span><span class="p">](</span><span class="n">this</span><span class="o">=</span><span class="n">rr</span><span class="p">,</span> <span class="n">expression</span><span class="o">=</span><span class="n">rl</span><span class="p">)</span> +</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> +</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> <span class="k">if</span> <span class="n">l</span><span class="o">.</span><span class="n">is_number</span> <span class="ow">and</span> <span class="n">r</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span> +</span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> <span class="n">l</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="n">l</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> <span class="n">r</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="n">r</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a> <span class="k">elif</span> <span class="n">l</span><span class="o">.</span><span class="n">is_string</span> <span class="ow">and</span> <span class="n">r</span><span class="o">.</span><span class="n">is_string</span><span class="p">:</span> +</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a> <span class="n">l</span> <span class="o">=</span> <span class="n">l</span><span class="o">.</span><span class="n">name</span> +</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a> <span class="n">r</span> <span class="o">=</span> <span class="n">r</span><span class="o">.</span><span class="n">name</span> +</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-195"><a href="#L-195"><span class="linenos">195</span></a> +</span><span id="L-196"><a href="#L-196"><span class="linenos">196</span></a> <span class="k">for</span> <span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">av</span><span class="p">),</span> <span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">bv</span><span class="p">)</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(((</span><span class="n">left</span><span class="p">,</span> <span class="n">l</span><span class="p">),</span> <span class="p">(</span><span class="n">right</span><span class="p">,</span> <span class="n">r</span><span class="p">))):</span> +</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">LT_LTE</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">LT_LTE</span><span class="p">):</span> +</span><span id="L-198"><a href="#L-198"><span class="linenos">198</span></a> <span class="k">return</span> <span class="n">left</span> <span class="k">if</span> <span class="p">(</span><span class="n">av</span> <span class="o">></span> <span class="n">bv</span> <span class="k">if</span> <span class="n">or_</span> <span class="k">else</span> <span class="n">av</span> <span class="o"><=</span> <span class="n">bv</span><span class="p">)</span> <span class="k">else</span> <span class="n">right</span> +</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">GT_GTE</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">GT_GTE</span><span class="p">):</span> +</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a> <span class="k">return</span> <span class="n">left</span> <span class="k">if</span> <span class="p">(</span><span class="n">av</span> <span class="o"><</span> <span class="n">bv</span> <span class="k">if</span> <span class="n">or_</span> <span class="k">else</span> <span class="n">av</span> <span class="o">>=</span> <span class="n">bv</span><span class="p">)</span> <span class="k">else</span> <span class="n">right</span> +</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a> +</span><span id="L-202"><a href="#L-202"><span class="linenos">202</span></a> <span class="c1"># we can't ever shortcut to true because the column could be null</span> +</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">GT_GTE</span><span class="p">):</span> +</span><span id="L-204"><a href="#L-204"><span class="linenos">204</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">or_</span> <span class="ow">and</span> <span class="n">av</span> <span class="o"><=</span> <span class="n">bv</span><span class="p">:</span> +</span><span id="L-205"><a href="#L-205"><span class="linenos">205</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="L-206"><a href="#L-206"><span class="linenos">206</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">LT_LTE</span><span class="p">):</span> +</span><span id="L-207"><a href="#L-207"><span class="linenos">207</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">or_</span> <span class="ow">and</span> <span class="n">av</span> <span class="o">>=</span> <span class="n">bv</span><span class="p">:</span> +</span><span id="L-208"><a href="#L-208"><span class="linenos">208</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="L-209"><a href="#L-209"><span class="linenos">209</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">):</span> +</span><span id="L-210"><a href="#L-210"><span class="linenos">210</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">):</span> +</span><span id="L-211"><a href="#L-211"><span class="linenos">211</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o">>=</span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span> +</span><span id="L-212"><a href="#L-212"><span class="linenos">212</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">):</span> +</span><span id="L-213"><a href="#L-213"><span class="linenos">213</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o">></span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span> +</span><span id="L-214"><a href="#L-214"><span class="linenos">214</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">):</span> +</span><span id="L-215"><a href="#L-215"><span class="linenos">215</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o"><=</span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span> +</span><span id="L-216"><a href="#L-216"><span class="linenos">216</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">):</span> +</span><span id="L-217"><a href="#L-217"><span class="linenos">217</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o"><</span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span> +</span><span id="L-218"><a href="#L-218"><span class="linenos">218</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">):</span> +</span><span id="L-219"><a href="#L-219"><span class="linenos">219</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o">==</span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span> +</span><span id="L-220"><a href="#L-220"><span class="linenos">220</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-221"><a href="#L-221"><span class="linenos">221</span></a> +</span><span id="L-222"><a href="#L-222"><span class="linenos">222</span></a> +</span><span id="L-223"><a href="#L-223"><span class="linenos">223</span></a><span class="k">def</span> <span class="nf">remove_compliments</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-224"><a href="#L-224"><span class="linenos">224</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-225"><a href="#L-225"><span class="linenos">225</span></a><span class="sd"> Removing compliments.</span> +</span><span id="L-226"><a href="#L-226"><span class="linenos">226</span></a> +</span><span id="L-227"><a href="#L-227"><span class="linenos">227</span></a><span class="sd"> A AND NOT A -> FALSE</span> +</span><span id="L-228"><a href="#L-228"><span class="linenos">228</span></a><span class="sd"> A OR NOT A -> TRUE</span> +</span><span id="L-229"><a href="#L-229"><span class="linenos">229</span></a><span class="sd"> """</span> +</span><span id="L-230"><a href="#L-230"><span class="linenos">230</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="L-231"><a href="#L-231"><span class="linenos">231</span></a> <span class="n">compliment</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="L-232"><a href="#L-232"><span class="linenos">232</span></a> +</span><span id="L-233"><a href="#L-233"><span class="linenos">233</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="mi">2</span><span class="p">):</span> +</span><span id="L-234"><a href="#L-234"><span class="linenos">234</span></a> <span class="k">if</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> +</span><span id="L-235"><a href="#L-235"><span class="linenos">235</span></a> <span class="k">return</span> <span class="n">compliment</span> +</span><span id="L-236"><a href="#L-236"><span class="linenos">236</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-237"><a href="#L-237"><span class="linenos">237</span></a> +</span><span id="L-238"><a href="#L-238"><span class="linenos">238</span></a> +</span><span id="L-239"><a href="#L-239"><span class="linenos">239</span></a><span class="k">def</span> <span class="nf">uniq_sort</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-240"><a href="#L-240"><span class="linenos">240</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-241"><a href="#L-241"><span class="linenos">241</span></a><span class="sd"> Uniq and sort a connector.</span> +</span><span id="L-242"><a href="#L-242"><span class="linenos">242</span></a> +</span><span id="L-243"><a href="#L-243"><span class="linenos">243</span></a><span class="sd"> C AND A AND B AND B -> A AND B AND C</span> +</span><span id="L-244"><a href="#L-244"><span class="linenos">244</span></a><span class="sd"> """</span> +</span><span id="L-245"><a href="#L-245"><span class="linenos">245</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="L-246"><a href="#L-246"><span class="linenos">246</span></a> <span class="n">result_func</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span> +</span><span id="L-247"><a href="#L-247"><span class="linenos">247</span></a> <span class="n">flattened</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">())</span> +</span><span id="L-248"><a href="#L-248"><span class="linenos">248</span></a> <span class="n">deduped</span> <span class="o">=</span> <span class="p">{</span><span class="n">GENERATOR</span><span class="o">.</span><span class="n">generate</span><span class="p">(</span><span class="n">e</span><span class="p">):</span> <span class="n">e</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">flattened</span><span class="p">}</span> +</span><span id="L-249"><a href="#L-249"><span class="linenos">249</span></a> <span class="n">arr</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">deduped</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> +</span><span id="L-250"><a href="#L-250"><span class="linenos">250</span></a> +</span><span id="L-251"><a href="#L-251"><span class="linenos">251</span></a> <span class="c1"># check if the operands are already sorted, if not sort them</span> +</span><span id="L-252"><a href="#L-252"><span class="linenos">252</span></a> <span class="c1"># A AND C AND B -> A AND B AND C</span> +</span><span id="L-253"><a href="#L-253"><span class="linenos">253</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">sql</span><span class="p">,</span> <span class="n">e</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">arr</span><span class="p">[</span><span class="mi">1</span><span class="p">:]):</span> +</span><span id="L-254"><a href="#L-254"><span class="linenos">254</span></a> <span class="k">if</span> <span class="n">sql</span> <span class="o"><</span> <span class="n">arr</span><span class="p">[</span><span class="n">i</span><span class="p">][</span><span class="mi">0</span><span class="p">]:</span> +</span><span id="L-255"><a href="#L-255"><span class="linenos">255</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">result_func</span><span class="p">(</span><span class="o">*</span><span class="p">(</span><span class="n">deduped</span><span class="p">[</span><span class="n">sql</span><span class="p">]</span> <span class="k">for</span> <span class="n">sql</span> <span class="ow">in</span> <span class="nb">sorted</span><span class="p">(</span><span class="n">deduped</span><span class="p">)))</span> +</span><span id="L-256"><a href="#L-256"><span class="linenos">256</span></a> <span class="k">break</span> +</span><span id="L-257"><a href="#L-257"><span class="linenos">257</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-258"><a href="#L-258"><span class="linenos">258</span></a> <span class="c1"># we didn't have to sort but maybe we need to dedup</span> +</span><span id="L-259"><a href="#L-259"><span class="linenos">259</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">deduped</span><span class="p">)</span> <span class="o"><</span> <span class="nb">len</span><span class="p">(</span><span class="n">flattened</span><span class="p">):</span> +</span><span id="L-260"><a href="#L-260"><span class="linenos">260</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">result_func</span><span class="p">(</span><span class="o">*</span><span class="n">deduped</span><span class="o">.</span><span class="n">values</span><span class="p">())</span> +</span><span id="L-261"><a href="#L-261"><span class="linenos">261</span></a> +</span><span id="L-262"><a href="#L-262"><span class="linenos">262</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-263"><a href="#L-263"><span class="linenos">263</span></a> +</span><span id="L-264"><a href="#L-264"><span class="linenos">264</span></a> +</span><span id="L-265"><a href="#L-265"><span class="linenos">265</span></a><span class="k">def</span> <span class="nf">absorb_and_eliminate</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-266"><a href="#L-266"><span class="linenos">266</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-267"><a href="#L-267"><span class="linenos">267</span></a><span class="sd"> absorption:</span> +</span><span id="L-268"><a href="#L-268"><span class="linenos">268</span></a><span class="sd"> A AND (A OR B) -> A</span> +</span><span id="L-269"><a href="#L-269"><span class="linenos">269</span></a><span class="sd"> A OR (A AND B) -> A</span> +</span><span id="L-270"><a href="#L-270"><span class="linenos">270</span></a><span class="sd"> A AND (NOT A OR B) -> A AND B</span> +</span><span id="L-271"><a href="#L-271"><span class="linenos">271</span></a><span class="sd"> A OR (NOT A AND B) -> A OR B</span> +</span><span id="L-272"><a href="#L-272"><span class="linenos">272</span></a><span class="sd"> elimination:</span> +</span><span id="L-273"><a href="#L-273"><span class="linenos">273</span></a><span class="sd"> (A AND B) OR (A AND NOT B) -> A</span> +</span><span id="L-274"><a href="#L-274"><span class="linenos">274</span></a><span class="sd"> (A OR B) AND (A OR NOT B) -> A</span> +</span><span id="L-275"><a href="#L-275"><span class="linenos">275</span></a><span class="sd"> """</span> +</span><span id="L-276"><a href="#L-276"><span class="linenos">276</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="L-277"><a href="#L-277"><span class="linenos">277</span></a> <span class="n">kind</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> +</span><span id="L-278"><a href="#L-278"><span class="linenos">278</span></a> +</span><span id="L-279"><a href="#L-279"><span class="linenos">279</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="mi">2</span><span class="p">):</span> +</span><span id="L-280"><a href="#L-280"><span class="linenos">280</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">kind</span><span class="p">):</span> +</span><span id="L-281"><a href="#L-281"><span class="linenos">281</span></a> <span class="n">aa</span><span class="p">,</span> <span class="n">ab</span> <span class="o">=</span> <span class="n">a</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> +</span><span id="L-282"><a href="#L-282"><span class="linenos">282</span></a> +</span><span id="L-283"><a href="#L-283"><span class="linenos">283</span></a> <span class="c1"># absorb</span> +</span><span id="L-284"><a href="#L-284"><span class="linenos">284</span></a> <span class="k">if</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">aa</span><span class="p">):</span> +</span><span id="L-285"><a href="#L-285"><span class="linenos">285</span></a> <span class="n">aa</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">())</span> +</span><span id="L-286"><a href="#L-286"><span class="linenos">286</span></a> <span class="k">elif</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">ab</span><span class="p">):</span> +</span><span id="L-287"><a href="#L-287"><span class="linenos">287</span></a> <span class="n">ab</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">())</span> +</span><span id="L-288"><a href="#L-288"><span class="linenos">288</span></a> <span class="k">elif</span> <span class="p">(</span><span class="nb">set</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">flatten</span><span class="p">())</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">kind</span><span class="p">)</span> <span class="k">else</span> <span class="p">{</span><span class="n">b</span><span class="p">})</span> <span class="o"><</span> <span class="nb">set</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">flatten</span><span class="p">()):</span> +</span><span id="L-289"><a href="#L-289"><span class="linenos">289</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> +</span><span id="L-290"><a href="#L-290"><span class="linenos">290</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">kind</span><span class="p">):</span> +</span><span id="L-291"><a href="#L-291"><span class="linenos">291</span></a> <span class="c1"># eliminate</span> +</span><span id="L-292"><a href="#L-292"><span class="linenos">292</span></a> <span class="n">rhs</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> +</span><span id="L-293"><a href="#L-293"><span class="linenos">293</span></a> <span class="n">ba</span><span class="p">,</span> <span class="n">bb</span> <span class="o">=</span> <span class="n">rhs</span> +</span><span id="L-294"><a href="#L-294"><span class="linenos">294</span></a> +</span><span id="L-295"><a href="#L-295"><span class="linenos">295</span></a> <span class="k">if</span> <span class="n">aa</span> <span class="ow">in</span> <span class="n">rhs</span> <span class="ow">and</span> <span class="p">(</span><span class="n">is_complement</span><span class="p">(</span><span class="n">ab</span><span class="p">,</span> <span class="n">ba</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">ab</span><span class="p">,</span> <span class="n">bb</span><span class="p">)):</span> +</span><span id="L-296"><a href="#L-296"><span class="linenos">296</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">aa</span><span class="p">)</span> +</span><span id="L-297"><a href="#L-297"><span class="linenos">297</span></a> <span class="n">b</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">aa</span><span class="p">)</span> +</span><span id="L-298"><a href="#L-298"><span class="linenos">298</span></a> <span class="k">elif</span> <span class="n">ab</span> <span class="ow">in</span> <span class="n">rhs</span> <span class="ow">and</span> <span class="p">(</span><span class="n">is_complement</span><span class="p">(</span><span class="n">aa</span><span class="p">,</span> <span class="n">ba</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">aa</span><span class="p">,</span> <span class="n">bb</span><span class="p">)):</span> +</span><span id="L-299"><a href="#L-299"><span class="linenos">299</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span> +</span><span id="L-300"><a href="#L-300"><span class="linenos">300</span></a> <span class="n">b</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span> +</span><span id="L-301"><a href="#L-301"><span class="linenos">301</span></a> +</span><span id="L-302"><a href="#L-302"><span class="linenos">302</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-303"><a href="#L-303"><span class="linenos">303</span></a> +</span><span id="L-304"><a href="#L-304"><span class="linenos">304</span></a> +</span><span id="L-305"><a href="#L-305"><span class="linenos">305</span></a><span class="k">def</span> <span class="nf">simplify_literals</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-306"><a href="#L-306"><span class="linenos">306</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">):</span> +</span><span id="L-307"><a href="#L-307"><span class="linenos">307</span></a> <span class="k">return</span> <span class="n">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify_binary</span><span class="p">)</span> +</span><span id="L-308"><a href="#L-308"><span class="linenos">308</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Neg</span><span class="p">):</span> +</span><span id="L-309"><a href="#L-309"><span class="linenos">309</span></a> <span class="n">this</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-310"><a href="#L-310"><span class="linenos">310</span></a> <span class="k">if</span> <span class="n">this</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span> +</span><span id="L-311"><a href="#L-311"><span class="linenos">311</span></a> <span class="n">value</span> <span class="o">=</span> <span class="n">this</span><span class="o">.</span><span class="n">name</span> +</span><span id="L-312"><a href="#L-312"><span class="linenos">312</span></a> <span class="k">if</span> <span class="n">value</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="s2">"-"</span><span class="p">:</span> +</span><span id="L-313"><a href="#L-313"><span class="linenos">313</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">value</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span> +</span><span id="L-314"><a href="#L-314"><span class="linenos">314</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="sa">f</span><span class="s2">"-</span><span class="si">{</span><span class="n">value</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a> +</span><span id="L-316"><a href="#L-316"><span class="linenos">316</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-317"><a href="#L-317"><span class="linenos">317</span></a> +</span><span id="L-318"><a href="#L-318"><span class="linenos">318</span></a> +</span><span id="L-319"><a href="#L-319"><span class="linenos">319</span></a><span class="k">def</span> <span class="nf">_simplify_binary</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> +</span><span id="L-320"><a href="#L-320"><span class="linenos">320</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">):</span> +</span><span id="L-321"><a href="#L-321"><span class="linenos">321</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span> +</span><span id="L-322"><a href="#L-322"><span class="linenos">322</span></a> <span class="n">c</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-323"><a href="#L-323"><span class="linenos">323</span></a> <span class="n">not_</span> <span class="o">=</span> <span class="kc">True</span> +</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a> <span class="n">c</span> <span class="o">=</span> <span class="n">b</span> +</span><span id="L-326"><a href="#L-326"><span class="linenos">326</span></a> <span class="n">not_</span> <span class="o">=</span> <span class="kc">False</span> +</span><span id="L-327"><a href="#L-327"><span class="linenos">327</span></a> +</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a> <span class="k">if</span> <span class="n">c</span> <span class="o">==</span> <span class="n">NULL</span><span class="p">:</span> +</span><span id="L-329"><a href="#L-329"><span class="linenos">329</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">):</span> +</span><span id="L-330"><a href="#L-330"><span class="linenos">330</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">not_</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="L-331"><a href="#L-331"><span class="linenos">331</span></a> <span class="k">if</span> <span class="n">a</span> <span class="o">==</span> <span class="n">NULL</span><span class="p">:</span> +</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">not_</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">NullSafeEQ</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">NullSafeNEQ</span><span class="p">)):</span> +</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a> <span class="k">elif</span> <span class="n">NULL</span> <span class="ow">in</span> <span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> +</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="L-337"><a href="#L-337"><span class="linenos">337</span></a> +</span><span id="L-338"><a href="#L-338"><span class="linenos">338</span></a> <span class="k">if</span> <span class="n">a</span><span class="o">.</span><span class="n">is_number</span> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span> +</span><span id="L-339"><a href="#L-339"><span class="linenos">339</span></a> <span class="n">a</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> <span class="k">if</span> <span class="n">a</span><span class="o">.</span><span class="n">is_int</span> <span class="k">else</span> <span class="n">Decimal</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-340"><a href="#L-340"><span class="linenos">340</span></a> <span class="n">b</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> <span class="k">if</span> <span class="n">b</span><span class="o">.</span><span class="n">is_int</span> <span class="k">else</span> <span class="n">Decimal</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a> +</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">):</span> +</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">+</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Sub</span><span class="p">):</span> +</span><span id="L-345"><a href="#L-345"><span class="linenos">345</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">-</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-346"><a href="#L-346"><span class="linenos">346</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Mul</span><span class="p">):</span> +</span><span id="L-347"><a href="#L-347"><span class="linenos">347</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">*</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Div</span><span class="p">):</span> +</span><span id="L-349"><a href="#L-349"><span class="linenos">349</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="nb">int</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="nb">int</span><span class="p">):</span> +</span><span id="L-350"><a href="#L-350"><span class="linenos">350</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">//</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-351"><a href="#L-351"><span class="linenos">351</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">/</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a> +</span><span id="L-353"><a href="#L-353"><span class="linenos">353</span></a> <span class="n">boolean</span> <span class="o">=</span> <span class="n">eval_boolean</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-354"><a href="#L-354"><span class="linenos">354</span></a> +</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a> <span class="k">if</span> <span class="n">boolean</span><span class="p">:</span> +</span><span id="L-356"><a href="#L-356"><span class="linenos">356</span></a> <span class="k">return</span> <span class="n">boolean</span> +</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a> <span class="k">elif</span> <span class="n">a</span><span class="o">.</span><span class="n">is_string</span> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">is_string</span><span class="p">:</span> +</span><span id="L-358"><a href="#L-358"><span class="linenos">358</span></a> <span class="n">boolean</span> <span class="o">=</span> <span class="n">eval_boolean</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a> +</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a> <span class="k">if</span> <span class="n">boolean</span><span class="p">:</span> +</span><span id="L-361"><a href="#L-361"><span class="linenos">361</span></a> <span class="k">return</span> <span class="n">boolean</span> +</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Cast</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Interval</span><span class="p">):</span> +</span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="o">=</span> <span class="n">extract_date</span><span class="p">(</span><span class="n">a</span><span class="p">),</span> <span class="n">extract_interval</span><span class="p">(</span><span class="n">b</span><span class="p">)</span> +</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a> <span class="k">if</span> <span class="n">a</span> <span class="ow">and</span> <span class="n">b</span><span class="p">:</span> +</span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">):</span> +</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a> <span class="k">return</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">+</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-367"><a href="#L-367"><span class="linenos">367</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Sub</span><span class="p">):</span> +</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a> <span class="k">return</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">-</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Interval</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Cast</span><span class="p">):</span> +</span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="o">=</span> <span class="n">extract_interval</span><span class="p">(</span><span class="n">a</span><span class="p">),</span> <span class="n">extract_date</span><span class="p">(</span><span class="n">b</span><span class="p">)</span> +</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a> <span class="c1"># you cannot subtract a date from an interval</span> +</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a> <span class="k">if</span> <span class="n">a</span> <span class="ow">and</span> <span class="n">b</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">):</span> +</span><span id="L-373"><a href="#L-373"><span class="linenos">373</span></a> <span class="k">return</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">+</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-374"><a href="#L-374"><span class="linenos">374</span></a> +</span><span id="L-375"><a href="#L-375"><span class="linenos">375</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-376"><a href="#L-376"><span class="linenos">376</span></a> +</span><span id="L-377"><a href="#L-377"><span class="linenos">377</span></a> +</span><span id="L-378"><a href="#L-378"><span class="linenos">378</span></a><span class="k">def</span> <span class="nf">simplify_parens</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-379"><a href="#L-379"><span class="linenos">379</span></a> <span class="k">if</span> <span class="p">(</span> +</span><span id="L-380"><a href="#L-380"><span class="linenos">380</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">)</span> +</span><span id="L-381"><a href="#L-381"><span class="linenos">381</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">)</span> +</span><span id="L-382"><a href="#L-382"><span class="linenos">382</span></a> <span class="ow">and</span> <span class="p">(</span> +</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">))</span> +</span><span id="L-384"><a href="#L-384"><span class="linenos">384</span></a> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Like</span><span class="p">))</span> +</span><span id="L-385"><a href="#L-385"><span class="linenos">385</span></a> <span class="ow">or</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">)</span> +</span><span id="L-386"><a href="#L-386"><span class="linenos">386</span></a> <span class="p">)</span> +</span><span id="L-387"><a href="#L-387"><span class="linenos">387</span></a> <span class="p">):</span> +</span><span id="L-388"><a href="#L-388"><span class="linenos">388</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-389"><a href="#L-389"><span class="linenos">389</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-390"><a href="#L-390"><span class="linenos">390</span></a> +</span><span id="L-391"><a href="#L-391"><span class="linenos">391</span></a> +</span><span id="L-392"><a href="#L-392"><span class="linenos">392</span></a><span class="k">def</span> <span class="nf">remove_where_true</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-393"><a href="#L-393"><span class="linenos">393</span></a> <span class="k">for</span> <span class="n">where</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Where</span><span class="p">):</span> +</span><span id="L-394"><a href="#L-394"><span class="linenos">394</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">):</span> +</span><span id="L-395"><a href="#L-395"><span class="linenos">395</span></a> <span class="n">where</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"where"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="L-396"><a href="#L-396"><span class="linenos">396</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">):</span> +</span><span id="L-397"><a href="#L-397"><span class="linenos">397</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)):</span> +</span><span id="L-398"><a href="#L-398"><span class="linenos">398</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"kind"</span><span class="p">,</span> <span class="s2">"CROSS"</span><span class="p">)</span> +</span><span id="L-399"><a href="#L-399"><span class="linenos">399</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"on"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="L-400"><a href="#L-400"><span class="linenos">400</span></a> +</span><span id="L-401"><a href="#L-401"><span class="linenos">401</span></a> +</span><span id="L-402"><a href="#L-402"><span class="linenos">402</span></a><span class="k">def</span> <span class="nf">always_true</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-403"><a href="#L-403"><span class="linenos">403</span></a> <span class="k">return</span> <span class="n">expression</span> <span class="o">==</span> <span class="n">TRUE</span> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">)</span> +</span><span id="L-404"><a href="#L-404"><span class="linenos">404</span></a> +</span><span id="L-405"><a href="#L-405"><span class="linenos">405</span></a> +</span><span id="L-406"><a href="#L-406"><span class="linenos">406</span></a><span class="k">def</span> <span class="nf">is_complement</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> +</span><span id="L-407"><a href="#L-407"><span class="linenos">407</span></a> <span class="k">return</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">)</span> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">a</span> +</span><span id="L-408"><a href="#L-408"><span class="linenos">408</span></a> +</span><span id="L-409"><a href="#L-409"><span class="linenos">409</span></a> +</span><span id="L-410"><a href="#L-410"><span class="linenos">410</span></a><span class="k">def</span> <span class="nf">eval_boolean</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> +</span><span id="L-411"><a href="#L-411"><span class="linenos">411</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">)):</span> +</span><span id="L-412"><a href="#L-412"><span class="linenos">412</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">==</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-413"><a href="#L-413"><span class="linenos">413</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">):</span> +</span><span id="L-414"><a href="#L-414"><span class="linenos">414</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">!=</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-415"><a href="#L-415"><span class="linenos">415</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">):</span> +</span><span id="L-416"><a href="#L-416"><span class="linenos">416</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">></span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-417"><a href="#L-417"><span class="linenos">417</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">):</span> +</span><span id="L-418"><a href="#L-418"><span class="linenos">418</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">>=</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-419"><a href="#L-419"><span class="linenos">419</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">):</span> +</span><span id="L-420"><a href="#L-420"><span class="linenos">420</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o"><</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-421"><a href="#L-421"><span class="linenos">421</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">):</span> +</span><span id="L-422"><a href="#L-422"><span class="linenos">422</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o"><=</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-423"><a href="#L-423"><span class="linenos">423</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-424"><a href="#L-424"><span class="linenos">424</span></a> +</span><span id="L-425"><a href="#L-425"><span class="linenos">425</span></a> +</span><span id="L-426"><a href="#L-426"><span class="linenos">426</span></a><span class="k">def</span> <span class="nf">extract_date</span><span class="p">(</span><span class="n">cast</span><span class="p">):</span> +</span><span id="L-427"><a href="#L-427"><span class="linenos">427</span></a> <span class="c1"># The "fromisoformat" conversion could fail if the cast is used on an identifier,</span> +</span><span id="L-428"><a href="#L-428"><span class="linenos">428</span></a> <span class="c1"># so in that case we can't extract the date.</span> +</span><span id="L-429"><a href="#L-429"><span class="linenos">429</span></a> <span class="k">try</span><span class="p">:</span> +</span><span id="L-430"><a href="#L-430"><span class="linenos">430</span></a> <span class="k">if</span> <span class="n">cast</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"to"</span><span class="p">]</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">:</span> +</span><span id="L-431"><a href="#L-431"><span class="linenos">431</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="o">.</span><span class="n">fromisoformat</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-432"><a href="#L-432"><span class="linenos">432</span></a> <span class="k">if</span> <span class="n">cast</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"to"</span><span class="p">]</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">:</span> +</span><span id="L-433"><a href="#L-433"><span class="linenos">433</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="o">.</span><span class="n">fromisoformat</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-434"><a href="#L-434"><span class="linenos">434</span></a> <span class="k">except</span> <span class="ne">ValueError</span><span class="p">:</span> +</span><span id="L-435"><a href="#L-435"><span class="linenos">435</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-436"><a href="#L-436"><span class="linenos">436</span></a> +</span><span id="L-437"><a href="#L-437"><span class="linenos">437</span></a> +</span><span id="L-438"><a href="#L-438"><span class="linenos">438</span></a><span class="k">def</span> <span class="nf">extract_interval</span><span class="p">(</span><span class="n">interval</span><span class="p">):</span> +</span><span id="L-439"><a href="#L-439"><span class="linenos">439</span></a> <span class="k">try</span><span class="p">:</span> +</span><span id="L-440"><a href="#L-440"><span class="linenos">440</span></a> <span class="kn">from</span> <span class="nn">dateutil.relativedelta</span> <span class="kn">import</span> <span class="n">relativedelta</span> <span class="c1"># type: ignore</span> +</span><span id="L-441"><a href="#L-441"><span class="linenos">441</span></a> <span class="k">except</span> <span class="ne">ModuleNotFoundError</span><span class="p">:</span> +</span><span id="L-442"><a href="#L-442"><span class="linenos">442</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-443"><a href="#L-443"><span class="linenos">443</span></a> +</span><span id="L-444"><a href="#L-444"><span class="linenos">444</span></a> <span class="n">n</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">interval</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-445"><a href="#L-445"><span class="linenos">445</span></a> <span class="n">unit</span> <span class="o">=</span> <span class="n">interval</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">"unit"</span><span class="p">)</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> +</span><span id="L-446"><a href="#L-446"><span class="linenos">446</span></a> +</span><span id="L-447"><a href="#L-447"><span class="linenos">447</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"year"</span><span class="p">:</span> +</span><span id="L-448"><a href="#L-448"><span class="linenos">448</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">years</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> +</span><span id="L-449"><a href="#L-449"><span class="linenos">449</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"month"</span><span class="p">:</span> +</span><span id="L-450"><a href="#L-450"><span class="linenos">450</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">months</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> +</span><span id="L-451"><a href="#L-451"><span class="linenos">451</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"week"</span><span class="p">:</span> +</span><span id="L-452"><a href="#L-452"><span class="linenos">452</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">weeks</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> +</span><span id="L-453"><a href="#L-453"><span class="linenos">453</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"day"</span><span class="p">:</span> +</span><span id="L-454"><a href="#L-454"><span class="linenos">454</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">days</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> +</span><span id="L-455"><a href="#L-455"><span class="linenos">455</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-456"><a href="#L-456"><span class="linenos">456</span></a> +</span><span id="L-457"><a href="#L-457"><span class="linenos">457</span></a> +</span><span id="L-458"><a href="#L-458"><span class="linenos">458</span></a><span class="k">def</span> <span class="nf">date_literal</span><span class="p">(</span><span class="n">date</span><span class="p">):</span> +</span><span id="L-459"><a href="#L-459"><span class="linenos">459</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span> +</span><span id="L-460"><a href="#L-460"><span class="linenos">460</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">string</span><span class="p">(</span><span class="n">date</span><span class="p">),</span> +</span><span id="L-461"><a href="#L-461"><span class="linenos">461</span></a> <span class="s2">"DATETIME"</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">date</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">)</span> <span class="k">else</span> <span class="s2">"DATE"</span><span class="p">,</span> +</span><span id="L-462"><a href="#L-462"><span class="linenos">462</span></a> <span class="p">)</span> +</span><span id="L-463"><a href="#L-463"><span class="linenos">463</span></a> +</span><span id="L-464"><a href="#L-464"><span class="linenos">464</span></a> +</span><span id="L-465"><a href="#L-465"><span class="linenos">465</span></a><span class="k">def</span> <span class="nf">boolean_literal</span><span class="p">(</span><span class="n">condition</span><span class="p">):</span> +</span><span id="L-466"><a href="#L-466"><span class="linenos">466</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">condition</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="L-467"><a href="#L-467"><span class="linenos">467</span></a> +</span><span id="L-468"><a href="#L-468"><span class="linenos">468</span></a> +</span><span id="L-469"><a href="#L-469"><span class="linenos">469</span></a><span class="k">def</span> <span class="nf">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">simplifier</span><span class="p">):</span> +</span><span id="L-470"><a href="#L-470"><span class="linenos">470</span></a> <span class="n">operands</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-471"><a href="#L-471"><span class="linenos">471</span></a> <span class="n">queue</span> <span class="o">=</span> <span class="n">deque</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(</span><span class="n">unnest</span><span class="o">=</span><span class="kc">False</span><span class="p">))</span> +</span><span id="L-472"><a href="#L-472"><span class="linenos">472</span></a> <span class="n">size</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">queue</span><span class="p">)</span> +</span><span id="L-473"><a href="#L-473"><span class="linenos">473</span></a> +</span><span id="L-474"><a href="#L-474"><span class="linenos">474</span></a> <span class="k">while</span> <span class="n">queue</span><span class="p">:</span> +</span><span id="L-475"><a href="#L-475"><span class="linenos">475</span></a> <span class="n">a</span> <span class="o">=</span> <span class="n">queue</span><span class="o">.</span><span class="n">popleft</span><span class="p">()</span> +</span><span id="L-476"><a href="#L-476"><span class="linenos">476</span></a> +</span><span id="L-477"><a href="#L-477"><span class="linenos">477</span></a> <span class="k">for</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">queue</span><span class="p">:</span> +</span><span id="L-478"><a href="#L-478"><span class="linenos">478</span></a> <span class="n">result</span> <span class="o">=</span> <span class="n">simplifier</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-479"><a href="#L-479"><span class="linenos">479</span></a> +</span><span id="L-480"><a href="#L-480"><span class="linenos">480</span></a> <span class="k">if</span> <span class="n">result</span><span class="p">:</span> +</span><span id="L-481"><a href="#L-481"><span class="linenos">481</span></a> <span class="n">queue</span><span class="o">.</span><span class="n">remove</span><span class="p">(</span><span class="n">b</span><span class="p">)</span> +</span><span id="L-482"><a href="#L-482"><span class="linenos">482</span></a> <span class="n">queue</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">result</span><span class="p">)</span> +</span><span id="L-483"><a href="#L-483"><span class="linenos">483</span></a> <span class="k">break</span> +</span><span id="L-484"><a href="#L-484"><span class="linenos">484</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-485"><a href="#L-485"><span class="linenos">485</span></a> <span class="n">operands</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> +</span><span id="L-486"><a href="#L-486"><span class="linenos">486</span></a> +</span><span id="L-487"><a href="#L-487"><span class="linenos">487</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">operands</span><span class="p">)</span> <span class="o"><</span> <span class="n">size</span><span class="p">:</span> +</span><span id="L-488"><a href="#L-488"><span class="linenos">488</span></a> <span class="k">return</span> <span class="n">functools</span><span class="o">.</span><span class="n">reduce</span><span class="p">(</span><span class="k">lambda</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">:</span> <span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">a</span><span class="p">,</span> <span class="n">expression</span><span class="o">=</span><span class="n">b</span><span class="p">),</span> <span class="n">operands</span><span class="p">)</span> +</span><span id="L-489"><a href="#L-489"><span class="linenos">489</span></a> <span class="k">return</span> <span class="n">expression</span> +</span></pre></div> + + + </section> + <section id="simplify"> + <input id="simplify-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">simplify</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="simplify-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#simplify"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="simplify-16"><a href="#simplify-16"><span class="linenos">16</span></a><span class="k">def</span> <span class="nf">simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="simplify-17"><a href="#simplify-17"><span class="linenos">17</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="simplify-18"><a href="#simplify-18"><span class="linenos">18</span></a><span class="sd"> Rewrite sqlglot AST to simplify expressions.</span> +</span><span id="simplify-19"><a href="#simplify-19"><span class="linenos">19</span></a> +</span><span id="simplify-20"><a href="#simplify-20"><span class="linenos">20</span></a><span class="sd"> Example:</span> +</span><span id="simplify-21"><a href="#simplify-21"><span class="linenos">21</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="simplify-22"><a href="#simplify-22"><span class="linenos">22</span></a><span class="sd"> >>> expression = sqlglot.parse_one("TRUE AND TRUE")</span> +</span><span id="simplify-23"><a href="#simplify-23"><span class="linenos">23</span></a><span class="sd"> >>> simplify(expression).sql()</span> +</span><span id="simplify-24"><a href="#simplify-24"><span class="linenos">24</span></a><span class="sd"> 'TRUE'</span> +</span><span id="simplify-25"><a href="#simplify-25"><span class="linenos">25</span></a> +</span><span id="simplify-26"><a href="#simplify-26"><span class="linenos">26</span></a><span class="sd"> Args:</span> +</span><span id="simplify-27"><a href="#simplify-27"><span class="linenos">27</span></a><span class="sd"> expression (sqlglot.Expression): expression to simplify</span> +</span><span id="simplify-28"><a href="#simplify-28"><span class="linenos">28</span></a><span class="sd"> Returns:</span> +</span><span id="simplify-29"><a href="#simplify-29"><span class="linenos">29</span></a><span class="sd"> sqlglot.Expression: simplified expression</span> +</span><span id="simplify-30"><a href="#simplify-30"><span class="linenos">30</span></a><span class="sd"> """</span> +</span><span id="simplify-31"><a href="#simplify-31"><span class="linenos">31</span></a> +</span><span id="simplify-32"><a href="#simplify-32"><span class="linenos">32</span></a> <span class="k">def</span> <span class="nf">_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="simplify-33"><a href="#simplify-33"><span class="linenos">33</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">expression</span> +</span><span id="simplify-34"><a href="#simplify-34"><span class="linenos">34</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">rewrite_between</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="simplify-35"><a href="#simplify-35"><span class="linenos">35</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">uniq_sort</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="simplify-36"><a href="#simplify-36"><span class="linenos">36</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">absorb_and_eliminate</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="simplify-37"><a href="#simplify-37"><span class="linenos">37</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">replace_children</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">_simplify</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="kc">False</span><span class="p">))</span> +</span><span id="simplify-38"><a href="#simplify-38"><span class="linenos">38</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_not</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="simplify-39"><a href="#simplify-39"><span class="linenos">39</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">flatten</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="simplify-40"><a href="#simplify-40"><span class="linenos">40</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_connectors</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="simplify-41"><a href="#simplify-41"><span class="linenos">41</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">remove_compliments</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="simplify-42"><a href="#simplify-42"><span class="linenos">42</span></a> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">parent</span> +</span><span id="simplify-43"><a href="#simplify-43"><span class="linenos">43</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_literals</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="simplify-44"><a href="#simplify-44"><span class="linenos">44</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_parens</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="simplify-45"><a href="#simplify-45"><span class="linenos">45</span></a> <span class="k">if</span> <span class="n">root</span><span class="p">:</span> +</span><span id="simplify-46"><a href="#simplify-46"><span class="linenos">46</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="simplify-47"><a href="#simplify-47"><span class="linenos">47</span></a> <span class="k">return</span> <span class="n">node</span> +</span><span id="simplify-48"><a href="#simplify-48"><span class="linenos">48</span></a> +</span><span id="simplify-49"><a href="#simplify-49"><span class="linenos">49</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">while_changing</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify</span><span class="p">)</span> +</span><span id="simplify-50"><a href="#simplify-50"><span class="linenos">50</span></a> <span class="n">remove_where_true</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="simplify-51"><a href="#simplify-51"><span class="linenos">51</span></a> <span class="k">return</span> <span class="n">expression</span> +</span></pre></div> + + + <div class="docstring"><p>Rewrite sqlglot AST to simplify expressions.</p> + +<h6 id="example">Example:</h6> + +<blockquote> + <div class="pdoc-code codehilite"> +<pre><span></span><code><span class="gp">>>> </span><span class="kn">import</span> <span class="nn">sqlglot</span> +<span class="gp">>>> </span><span class="n">expression</span> <span class="o">=</span> <span class="n"><a href="../../sqlglot.html#parse_one">sqlglot.parse_one</a></span><span class="p">(</span><span class="s2">"TRUE AND TRUE"</span><span class="p">)</span> +<span class="gp">>>> </span><span class="n">simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span> +<span class="go">'TRUE'</span> +</code></pre> + </div> +</blockquote> + +<h6 id="arguments">Arguments:</h6> + +<ul> +<li><strong>expression (sqlglot.Expression):</strong> expression to simplify</li> +</ul> + +<h6 id="returns">Returns:</h6> + +<blockquote> + <p>sqlglot.Expression: simplified expression</p> +</blockquote> +</div> + + + </section> + <section id="rewrite_between"> + <input id="rewrite_between-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">rewrite_between</span><span class="signature pdoc-code multiline">(<span class="param"> <span class="n">expression</span><span class="p">:</span> <span class="n"><a href="../expressions.html#Expression">sqlglot.expressions.Expression</a></span></span><span class="return-annotation">) -> <span class="n"><a href="../expressions.html#Expression">sqlglot.expressions.Expression</a></span>:</span></span> + + <label class="view-source-button" for="rewrite_between-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#rewrite_between"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="rewrite_between-54"><a href="#rewrite_between-54"><span class="linenos">54</span></a><span class="k">def</span> <span class="nf">rewrite_between</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span> +</span><span id="rewrite_between-55"><a href="#rewrite_between-55"><span class="linenos">55</span></a><span class="w"> </span><span class="sd">"""Rewrite x between y and z to x >= y AND x <= z.</span> +</span><span id="rewrite_between-56"><a href="#rewrite_between-56"><span class="linenos">56</span></a> +</span><span id="rewrite_between-57"><a href="#rewrite_between-57"><span class="linenos">57</span></a><span class="sd"> This is done because comparison simplification is only done on lt/lte/gt/gte.</span> +</span><span id="rewrite_between-58"><a href="#rewrite_between-58"><span class="linenos">58</span></a><span class="sd"> """</span> +</span><span id="rewrite_between-59"><a href="#rewrite_between-59"><span class="linenos">59</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Between</span><span class="p">):</span> +</span><span id="rewrite_between-60"><a href="#rewrite_between-60"><span class="linenos">60</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span> +</span><span id="rewrite_between-61"><a href="#rewrite_between-61"><span class="linenos">61</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"low"</span><span class="p">]),</span> +</span><span id="rewrite_between-62"><a href="#rewrite_between-62"><span class="linenos">62</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"high"</span><span class="p">]),</span> +</span><span id="rewrite_between-63"><a href="#rewrite_between-63"><span class="linenos">63</span></a> <span class="p">)</span> +</span><span id="rewrite_between-64"><a href="#rewrite_between-64"><span class="linenos">64</span></a> <span class="k">return</span> <span class="n">expression</span> +</span></pre></div> + + + <div class="docstring"><p>Rewrite x between y and z to x >= y AND x <= z.</p> + +<p>This is done because comparison simplification is only done on lt/lte/gt/gte.</p> +</div> + + + </section> + <section id="simplify_not"> + <input id="simplify_not-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">simplify_not</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="simplify_not-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#simplify_not"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="simplify_not-67"><a href="#simplify_not-67"><span class="linenos">67</span></a><span class="k">def</span> <span class="nf">simplify_not</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="simplify_not-68"><a href="#simplify_not-68"><span class="linenos">68</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="simplify_not-69"><a href="#simplify_not-69"><span class="linenos">69</span></a><span class="sd"> Demorgan's Law</span> +</span><span id="simplify_not-70"><a href="#simplify_not-70"><span class="linenos">70</span></a><span class="sd"> NOT (x OR y) -> NOT x AND NOT y</span> +</span><span id="simplify_not-71"><a href="#simplify_not-71"><span class="linenos">71</span></a><span class="sd"> NOT (x AND y) -> NOT x OR NOT y</span> +</span><span id="simplify_not-72"><a href="#simplify_not-72"><span class="linenos">72</span></a><span class="sd"> """</span> +</span><span id="simplify_not-73"><a href="#simplify_not-73"><span class="linenos">73</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span> +</span><span id="simplify_not-74"><a href="#simplify_not-74"><span class="linenos">74</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Null</span><span class="p">):</span> +</span><span id="simplify_not-75"><a href="#simplify_not-75"><span class="linenos">75</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="simplify_not-76"><a href="#simplify_not-76"><span class="linenos">76</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">):</span> +</span><span id="simplify_not-77"><a href="#simplify_not-77"><span class="linenos">77</span></a> <span class="n">condition</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> +</span><span id="simplify_not-78"><a href="#simplify_not-78"><span class="linenos">78</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">):</span> +</span><span id="simplify_not-79"><a href="#simplify_not-79"><span class="linenos">79</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">left</span><span class="p">),</span> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">right</span><span class="p">))</span> +</span><span id="simplify_not-80"><a href="#simplify_not-80"><span class="linenos">80</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span> +</span><span id="simplify_not-81"><a href="#simplify_not-81"><span class="linenos">81</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">left</span><span class="p">),</span> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">right</span><span class="p">))</span> +</span><span id="simplify_not-82"><a href="#simplify_not-82"><span class="linenos">82</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Null</span><span class="p">):</span> +</span><span id="simplify_not-83"><a href="#simplify_not-83"><span class="linenos">83</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="simplify_not-84"><a href="#simplify_not-84"><span class="linenos">84</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">):</span> +</span><span id="simplify_not-85"><a href="#simplify_not-85"><span class="linenos">85</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="simplify_not-86"><a href="#simplify_not-86"><span class="linenos">86</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">:</span> +</span><span id="simplify_not-87"><a href="#simplify_not-87"><span class="linenos">87</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="simplify_not-88"><a href="#simplify_not-88"><span class="linenos">88</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span> +</span><span id="simplify_not-89"><a href="#simplify_not-89"><span class="linenos">89</span></a> <span class="c1"># double negation</span> +</span><span id="simplify_not-90"><a href="#simplify_not-90"><span class="linenos">90</span></a> <span class="c1"># NOT NOT x -> x</span> +</span><span id="simplify_not-91"><a href="#simplify_not-91"><span class="linenos">91</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">this</span> +</span><span id="simplify_not-92"><a href="#simplify_not-92"><span class="linenos">92</span></a> <span class="k">return</span> <span class="n">expression</span> +</span></pre></div> + + + <div class="docstring"><p>Demorgan's Law +NOT (x OR y) -> NOT x AND NOT y +NOT (x AND y) -> NOT x OR NOT y</p> +</div> + + + </section> + <section id="flatten"> + <input id="flatten-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">flatten</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="flatten-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#flatten"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="flatten-95"><a href="#flatten-95"><span class="linenos"> 95</span></a><span class="k">def</span> <span class="nf">flatten</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="flatten-96"><a href="#flatten-96"><span class="linenos"> 96</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="flatten-97"><a href="#flatten-97"><span class="linenos"> 97</span></a><span class="sd"> A AND (B AND C) -> A AND B AND C</span> +</span><span id="flatten-98"><a href="#flatten-98"><span class="linenos"> 98</span></a><span class="sd"> A OR (B OR C) -> A OR B OR C</span> +</span><span id="flatten-99"><a href="#flatten-99"><span class="linenos"> 99</span></a><span class="sd"> """</span> +</span><span id="flatten-100"><a href="#flatten-100"><span class="linenos">100</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="flatten-101"><a href="#flatten-101"><span class="linenos">101</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> +</span><span id="flatten-102"><a href="#flatten-102"><span class="linenos">102</span></a> <span class="n">child</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> +</span><span id="flatten-103"><a href="#flatten-103"><span class="linenos">103</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">child</span><span class="p">,</span> <span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">):</span> +</span><span id="flatten-104"><a href="#flatten-104"><span class="linenos">104</span></a> <span class="n">node</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">child</span><span class="p">)</span> +</span><span id="flatten-105"><a href="#flatten-105"><span class="linenos">105</span></a> <span class="k">return</span> <span class="n">expression</span> +</span></pre></div> + + + <div class="docstring"><p>A AND (B AND C) -> A AND B AND C +A OR (B OR C) -> A OR B OR C</p> +</div> + + + </section> + <section id="simplify_connectors"> + <input id="simplify_connectors-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">simplify_connectors</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="simplify_connectors-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#simplify_connectors"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="simplify_connectors-108"><a href="#simplify_connectors-108"><span class="linenos">108</span></a><span class="k">def</span> <span class="nf">simplify_connectors</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="simplify_connectors-109"><a href="#simplify_connectors-109"><span class="linenos">109</span></a> <span class="k">def</span> <span class="nf">_simplify_connectors</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">):</span> +</span><span id="simplify_connectors-110"><a href="#simplify_connectors-110"><span class="linenos">110</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="simplify_connectors-111"><a href="#simplify_connectors-111"><span class="linenos">111</span></a> <span class="k">if</span> <span class="n">left</span> <span class="o">==</span> <span class="n">right</span><span class="p">:</span> +</span><span id="simplify_connectors-112"><a href="#simplify_connectors-112"><span class="linenos">112</span></a> <span class="k">return</span> <span class="n">left</span> +</span><span id="simplify_connectors-113"><a href="#simplify_connectors-113"><span class="linenos">113</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">):</span> +</span><span id="simplify_connectors-114"><a href="#simplify_connectors-114"><span class="linenos">114</span></a> <span class="k">if</span> <span class="n">FALSE</span> <span class="ow">in</span> <span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">):</span> +</span><span id="simplify_connectors-115"><a href="#simplify_connectors-115"><span class="linenos">115</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="simplify_connectors-116"><a href="#simplify_connectors-116"><span class="linenos">116</span></a> <span class="k">if</span> <span class="n">NULL</span> <span class="ow">in</span> <span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">):</span> +</span><span id="simplify_connectors-117"><a href="#simplify_connectors-117"><span class="linenos">117</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="simplify_connectors-118"><a href="#simplify_connectors-118"><span class="linenos">118</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="simplify_connectors-119"><a href="#simplify_connectors-119"><span class="linenos">119</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="simplify_connectors-120"><a href="#simplify_connectors-120"><span class="linenos">120</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">):</span> +</span><span id="simplify_connectors-121"><a href="#simplify_connectors-121"><span class="linenos">121</span></a> <span class="k">return</span> <span class="n">right</span> +</span><span id="simplify_connectors-122"><a href="#simplify_connectors-122"><span class="linenos">122</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="simplify_connectors-123"><a href="#simplify_connectors-123"><span class="linenos">123</span></a> <span class="k">return</span> <span class="n">left</span> +</span><span id="simplify_connectors-124"><a href="#simplify_connectors-124"><span class="linenos">124</span></a> <span class="k">return</span> <span class="n">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">)</span> +</span><span id="simplify_connectors-125"><a href="#simplify_connectors-125"><span class="linenos">125</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span> +</span><span id="simplify_connectors-126"><a href="#simplify_connectors-126"><span class="linenos">126</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">or</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="simplify_connectors-127"><a href="#simplify_connectors-127"><span class="linenos">127</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="simplify_connectors-128"><a href="#simplify_connectors-128"><span class="linenos">128</span></a> <span class="k">if</span> <span class="n">left</span> <span class="o">==</span> <span class="n">FALSE</span> <span class="ow">and</span> <span class="n">right</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">:</span> +</span><span id="simplify_connectors-129"><a href="#simplify_connectors-129"><span class="linenos">129</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="simplify_connectors-130"><a href="#simplify_connectors-130"><span class="linenos">130</span></a> <span class="k">if</span> <span class="p">(</span> +</span><span id="simplify_connectors-131"><a href="#simplify_connectors-131"><span class="linenos">131</span></a> <span class="p">(</span><span class="n">left</span> <span class="o">==</span> <span class="n">NULL</span> <span class="ow">and</span> <span class="n">right</span> <span class="o">==</span> <span class="n">NULL</span><span class="p">)</span> +</span><span id="simplify_connectors-132"><a href="#simplify_connectors-132"><span class="linenos">132</span></a> <span class="ow">or</span> <span class="p">(</span><span class="n">left</span> <span class="o">==</span> <span class="n">NULL</span> <span class="ow">and</span> <span class="n">right</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">)</span> +</span><span id="simplify_connectors-133"><a href="#simplify_connectors-133"><span class="linenos">133</span></a> <span class="ow">or</span> <span class="p">(</span><span class="n">left</span> <span class="o">==</span> <span class="n">FALSE</span> <span class="ow">and</span> <span class="n">right</span> <span class="o">==</span> <span class="n">NULL</span><span class="p">)</span> +</span><span id="simplify_connectors-134"><a href="#simplify_connectors-134"><span class="linenos">134</span></a> <span class="p">):</span> +</span><span id="simplify_connectors-135"><a href="#simplify_connectors-135"><span class="linenos">135</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="simplify_connectors-136"><a href="#simplify_connectors-136"><span class="linenos">136</span></a> <span class="k">if</span> <span class="n">left</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">:</span> +</span><span id="simplify_connectors-137"><a href="#simplify_connectors-137"><span class="linenos">137</span></a> <span class="k">return</span> <span class="n">right</span> +</span><span id="simplify_connectors-138"><a href="#simplify_connectors-138"><span class="linenos">138</span></a> <span class="k">if</span> <span class="n">right</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">:</span> +</span><span id="simplify_connectors-139"><a href="#simplify_connectors-139"><span class="linenos">139</span></a> <span class="k">return</span> <span class="n">left</span> +</span><span id="simplify_connectors-140"><a href="#simplify_connectors-140"><span class="linenos">140</span></a> <span class="k">return</span> <span class="n">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">,</span> <span class="n">or_</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="simplify_connectors-141"><a href="#simplify_connectors-141"><span class="linenos">141</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="simplify_connectors-142"><a href="#simplify_connectors-142"><span class="linenos">142</span></a> +</span><span id="simplify_connectors-143"><a href="#simplify_connectors-143"><span class="linenos">143</span></a> <span class="k">return</span> <span class="n">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify_connectors</span><span class="p">)</span> +</span></pre></div> + + + + + </section> + <section id="remove_compliments"> + <input id="remove_compliments-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">remove_compliments</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="remove_compliments-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#remove_compliments"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="remove_compliments-224"><a href="#remove_compliments-224"><span class="linenos">224</span></a><span class="k">def</span> <span class="nf">remove_compliments</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="remove_compliments-225"><a href="#remove_compliments-225"><span class="linenos">225</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="remove_compliments-226"><a href="#remove_compliments-226"><span class="linenos">226</span></a><span class="sd"> Removing compliments.</span> +</span><span id="remove_compliments-227"><a href="#remove_compliments-227"><span class="linenos">227</span></a> +</span><span id="remove_compliments-228"><a href="#remove_compliments-228"><span class="linenos">228</span></a><span class="sd"> A AND NOT A -> FALSE</span> +</span><span id="remove_compliments-229"><a href="#remove_compliments-229"><span class="linenos">229</span></a><span class="sd"> A OR NOT A -> TRUE</span> +</span><span id="remove_compliments-230"><a href="#remove_compliments-230"><span class="linenos">230</span></a><span class="sd"> """</span> +</span><span id="remove_compliments-231"><a href="#remove_compliments-231"><span class="linenos">231</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="remove_compliments-232"><a href="#remove_compliments-232"><span class="linenos">232</span></a> <span class="n">compliment</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="remove_compliments-233"><a href="#remove_compliments-233"><span class="linenos">233</span></a> +</span><span id="remove_compliments-234"><a href="#remove_compliments-234"><span class="linenos">234</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="mi">2</span><span class="p">):</span> +</span><span id="remove_compliments-235"><a href="#remove_compliments-235"><span class="linenos">235</span></a> <span class="k">if</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> +</span><span id="remove_compliments-236"><a href="#remove_compliments-236"><span class="linenos">236</span></a> <span class="k">return</span> <span class="n">compliment</span> +</span><span id="remove_compliments-237"><a href="#remove_compliments-237"><span class="linenos">237</span></a> <span class="k">return</span> <span class="n">expression</span> +</span></pre></div> + + + <div class="docstring"><p>Removing compliments.</p> + +<p>A AND NOT A -> FALSE +A OR NOT A -> TRUE</p> +</div> + + + </section> + <section id="uniq_sort"> + <input id="uniq_sort-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">uniq_sort</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="uniq_sort-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#uniq_sort"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="uniq_sort-240"><a href="#uniq_sort-240"><span class="linenos">240</span></a><span class="k">def</span> <span class="nf">uniq_sort</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="uniq_sort-241"><a href="#uniq_sort-241"><span class="linenos">241</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="uniq_sort-242"><a href="#uniq_sort-242"><span class="linenos">242</span></a><span class="sd"> Uniq and sort a connector.</span> +</span><span id="uniq_sort-243"><a href="#uniq_sort-243"><span class="linenos">243</span></a> +</span><span id="uniq_sort-244"><a href="#uniq_sort-244"><span class="linenos">244</span></a><span class="sd"> C AND A AND B AND B -> A AND B AND C</span> +</span><span id="uniq_sort-245"><a href="#uniq_sort-245"><span class="linenos">245</span></a><span class="sd"> """</span> +</span><span id="uniq_sort-246"><a href="#uniq_sort-246"><span class="linenos">246</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="uniq_sort-247"><a href="#uniq_sort-247"><span class="linenos">247</span></a> <span class="n">result_func</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span> +</span><span id="uniq_sort-248"><a href="#uniq_sort-248"><span class="linenos">248</span></a> <span class="n">flattened</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">())</span> +</span><span id="uniq_sort-249"><a href="#uniq_sort-249"><span class="linenos">249</span></a> <span class="n">deduped</span> <span class="o">=</span> <span class="p">{</span><span class="n">GENERATOR</span><span class="o">.</span><span class="n">generate</span><span class="p">(</span><span class="n">e</span><span class="p">):</span> <span class="n">e</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">flattened</span><span class="p">}</span> +</span><span id="uniq_sort-250"><a href="#uniq_sort-250"><span class="linenos">250</span></a> <span class="n">arr</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">deduped</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> +</span><span id="uniq_sort-251"><a href="#uniq_sort-251"><span class="linenos">251</span></a> +</span><span id="uniq_sort-252"><a href="#uniq_sort-252"><span class="linenos">252</span></a> <span class="c1"># check if the operands are already sorted, if not sort them</span> +</span><span id="uniq_sort-253"><a href="#uniq_sort-253"><span class="linenos">253</span></a> <span class="c1"># A AND C AND B -> A AND B AND C</span> +</span><span id="uniq_sort-254"><a href="#uniq_sort-254"><span class="linenos">254</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">sql</span><span class="p">,</span> <span class="n">e</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">arr</span><span class="p">[</span><span class="mi">1</span><span class="p">:]):</span> +</span><span id="uniq_sort-255"><a href="#uniq_sort-255"><span class="linenos">255</span></a> <span class="k">if</span> <span class="n">sql</span> <span class="o"><</span> <span class="n">arr</span><span class="p">[</span><span class="n">i</span><span class="p">][</span><span class="mi">0</span><span class="p">]:</span> +</span><span id="uniq_sort-256"><a href="#uniq_sort-256"><span class="linenos">256</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">result_func</span><span class="p">(</span><span class="o">*</span><span class="p">(</span><span class="n">deduped</span><span class="p">[</span><span class="n">sql</span><span class="p">]</span> <span class="k">for</span> <span class="n">sql</span> <span class="ow">in</span> <span class="nb">sorted</span><span class="p">(</span><span class="n">deduped</span><span class="p">)))</span> +</span><span id="uniq_sort-257"><a href="#uniq_sort-257"><span class="linenos">257</span></a> <span class="k">break</span> +</span><span id="uniq_sort-258"><a href="#uniq_sort-258"><span class="linenos">258</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="uniq_sort-259"><a href="#uniq_sort-259"><span class="linenos">259</span></a> <span class="c1"># we didn't have to sort but maybe we need to dedup</span> +</span><span id="uniq_sort-260"><a href="#uniq_sort-260"><span class="linenos">260</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">deduped</span><span class="p">)</span> <span class="o"><</span> <span class="nb">len</span><span class="p">(</span><span class="n">flattened</span><span class="p">):</span> +</span><span id="uniq_sort-261"><a href="#uniq_sort-261"><span class="linenos">261</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">result_func</span><span class="p">(</span><span class="o">*</span><span class="n">deduped</span><span class="o">.</span><span class="n">values</span><span class="p">())</span> +</span><span id="uniq_sort-262"><a href="#uniq_sort-262"><span class="linenos">262</span></a> +</span><span id="uniq_sort-263"><a href="#uniq_sort-263"><span class="linenos">263</span></a> <span class="k">return</span> <span class="n">expression</span> +</span></pre></div> + + + <div class="docstring"><p>Uniq and sort a connector.</p> + +<p>C AND A AND B AND B -> A AND B AND C</p> +</div> + + + </section> + <section id="absorb_and_eliminate"> + <input id="absorb_and_eliminate-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">absorb_and_eliminate</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="absorb_and_eliminate-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#absorb_and_eliminate"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="absorb_and_eliminate-266"><a href="#absorb_and_eliminate-266"><span class="linenos">266</span></a><span class="k">def</span> <span class="nf">absorb_and_eliminate</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="absorb_and_eliminate-267"><a href="#absorb_and_eliminate-267"><span class="linenos">267</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="absorb_and_eliminate-268"><a href="#absorb_and_eliminate-268"><span class="linenos">268</span></a><span class="sd"> absorption:</span> +</span><span id="absorb_and_eliminate-269"><a href="#absorb_and_eliminate-269"><span class="linenos">269</span></a><span class="sd"> A AND (A OR B) -> A</span> +</span><span id="absorb_and_eliminate-270"><a href="#absorb_and_eliminate-270"><span class="linenos">270</span></a><span class="sd"> A OR (A AND B) -> A</span> +</span><span id="absorb_and_eliminate-271"><a href="#absorb_and_eliminate-271"><span class="linenos">271</span></a><span class="sd"> A AND (NOT A OR B) -> A AND B</span> +</span><span id="absorb_and_eliminate-272"><a href="#absorb_and_eliminate-272"><span class="linenos">272</span></a><span class="sd"> A OR (NOT A AND B) -> A OR B</span> +</span><span id="absorb_and_eliminate-273"><a href="#absorb_and_eliminate-273"><span class="linenos">273</span></a><span class="sd"> elimination:</span> +</span><span id="absorb_and_eliminate-274"><a href="#absorb_and_eliminate-274"><span class="linenos">274</span></a><span class="sd"> (A AND B) OR (A AND NOT B) -> A</span> +</span><span id="absorb_and_eliminate-275"><a href="#absorb_and_eliminate-275"><span class="linenos">275</span></a><span class="sd"> (A OR B) AND (A OR NOT B) -> A</span> +</span><span id="absorb_and_eliminate-276"><a href="#absorb_and_eliminate-276"><span class="linenos">276</span></a><span class="sd"> """</span> +</span><span id="absorb_and_eliminate-277"><a href="#absorb_and_eliminate-277"><span class="linenos">277</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="absorb_and_eliminate-278"><a href="#absorb_and_eliminate-278"><span class="linenos">278</span></a> <span class="n">kind</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> +</span><span id="absorb_and_eliminate-279"><a href="#absorb_and_eliminate-279"><span class="linenos">279</span></a> +</span><span id="absorb_and_eliminate-280"><a href="#absorb_and_eliminate-280"><span class="linenos">280</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="mi">2</span><span class="p">):</span> +</span><span id="absorb_and_eliminate-281"><a href="#absorb_and_eliminate-281"><span class="linenos">281</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">kind</span><span class="p">):</span> +</span><span id="absorb_and_eliminate-282"><a href="#absorb_and_eliminate-282"><span class="linenos">282</span></a> <span class="n">aa</span><span class="p">,</span> <span class="n">ab</span> <span class="o">=</span> <span class="n">a</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> +</span><span id="absorb_and_eliminate-283"><a href="#absorb_and_eliminate-283"><span class="linenos">283</span></a> +</span><span id="absorb_and_eliminate-284"><a href="#absorb_and_eliminate-284"><span class="linenos">284</span></a> <span class="c1"># absorb</span> +</span><span id="absorb_and_eliminate-285"><a href="#absorb_and_eliminate-285"><span class="linenos">285</span></a> <span class="k">if</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">aa</span><span class="p">):</span> +</span><span id="absorb_and_eliminate-286"><a href="#absorb_and_eliminate-286"><span class="linenos">286</span></a> <span class="n">aa</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">())</span> +</span><span id="absorb_and_eliminate-287"><a href="#absorb_and_eliminate-287"><span class="linenos">287</span></a> <span class="k">elif</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">ab</span><span class="p">):</span> +</span><span id="absorb_and_eliminate-288"><a href="#absorb_and_eliminate-288"><span class="linenos">288</span></a> <span class="n">ab</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">())</span> +</span><span id="absorb_and_eliminate-289"><a href="#absorb_and_eliminate-289"><span class="linenos">289</span></a> <span class="k">elif</span> <span class="p">(</span><span class="nb">set</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">flatten</span><span class="p">())</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">kind</span><span class="p">)</span> <span class="k">else</span> <span class="p">{</span><span class="n">b</span><span class="p">})</span> <span class="o"><</span> <span class="nb">set</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">flatten</span><span class="p">()):</span> +</span><span id="absorb_and_eliminate-290"><a href="#absorb_and_eliminate-290"><span class="linenos">290</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> +</span><span id="absorb_and_eliminate-291"><a href="#absorb_and_eliminate-291"><span class="linenos">291</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">kind</span><span class="p">):</span> +</span><span id="absorb_and_eliminate-292"><a href="#absorb_and_eliminate-292"><span class="linenos">292</span></a> <span class="c1"># eliminate</span> +</span><span id="absorb_and_eliminate-293"><a href="#absorb_and_eliminate-293"><span class="linenos">293</span></a> <span class="n">rhs</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> +</span><span id="absorb_and_eliminate-294"><a href="#absorb_and_eliminate-294"><span class="linenos">294</span></a> <span class="n">ba</span><span class="p">,</span> <span class="n">bb</span> <span class="o">=</span> <span class="n">rhs</span> +</span><span id="absorb_and_eliminate-295"><a href="#absorb_and_eliminate-295"><span class="linenos">295</span></a> +</span><span id="absorb_and_eliminate-296"><a href="#absorb_and_eliminate-296"><span class="linenos">296</span></a> <span class="k">if</span> <span class="n">aa</span> <span class="ow">in</span> <span class="n">rhs</span> <span class="ow">and</span> <span class="p">(</span><span class="n">is_complement</span><span class="p">(</span><span class="n">ab</span><span class="p">,</span> <span class="n">ba</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">ab</span><span class="p">,</span> <span class="n">bb</span><span class="p">)):</span> +</span><span id="absorb_and_eliminate-297"><a href="#absorb_and_eliminate-297"><span class="linenos">297</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">aa</span><span class="p">)</span> +</span><span id="absorb_and_eliminate-298"><a href="#absorb_and_eliminate-298"><span class="linenos">298</span></a> <span class="n">b</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">aa</span><span class="p">)</span> +</span><span id="absorb_and_eliminate-299"><a href="#absorb_and_eliminate-299"><span class="linenos">299</span></a> <span class="k">elif</span> <span class="n">ab</span> <span class="ow">in</span> <span class="n">rhs</span> <span class="ow">and</span> <span class="p">(</span><span class="n">is_complement</span><span class="p">(</span><span class="n">aa</span><span class="p">,</span> <span class="n">ba</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">aa</span><span class="p">,</span> <span class="n">bb</span><span class="p">)):</span> +</span><span id="absorb_and_eliminate-300"><a href="#absorb_and_eliminate-300"><span class="linenos">300</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span> +</span><span id="absorb_and_eliminate-301"><a href="#absorb_and_eliminate-301"><span class="linenos">301</span></a> <span class="n">b</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span> +</span><span id="absorb_and_eliminate-302"><a href="#absorb_and_eliminate-302"><span class="linenos">302</span></a> +</span><span id="absorb_and_eliminate-303"><a href="#absorb_and_eliminate-303"><span class="linenos">303</span></a> <span class="k">return</span> <span class="n">expression</span> +</span></pre></div> + + + <div class="docstring"><p>absorption: + A AND (A OR B) -> A + A OR (A AND B) -> A + A AND (NOT A OR B) -> A AND B + A OR (NOT A AND B) -> A OR B +elimination: + (A AND B) OR (A AND NOT B) -> A + (A OR B) AND (A OR NOT B) -> A</p> +</div> + + + </section> + <section id="simplify_literals"> + <input id="simplify_literals-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">simplify_literals</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="simplify_literals-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#simplify_literals"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="simplify_literals-306"><a href="#simplify_literals-306"><span class="linenos">306</span></a><span class="k">def</span> <span class="nf">simplify_literals</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="simplify_literals-307"><a href="#simplify_literals-307"><span class="linenos">307</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">):</span> +</span><span id="simplify_literals-308"><a href="#simplify_literals-308"><span class="linenos">308</span></a> <span class="k">return</span> <span class="n">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify_binary</span><span class="p">)</span> +</span><span id="simplify_literals-309"><a href="#simplify_literals-309"><span class="linenos">309</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Neg</span><span class="p">):</span> +</span><span id="simplify_literals-310"><a href="#simplify_literals-310"><span class="linenos">310</span></a> <span class="n">this</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span> +</span><span id="simplify_literals-311"><a href="#simplify_literals-311"><span class="linenos">311</span></a> <span class="k">if</span> <span class="n">this</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span> +</span><span id="simplify_literals-312"><a href="#simplify_literals-312"><span class="linenos">312</span></a> <span class="n">value</span> <span class="o">=</span> <span class="n">this</span><span class="o">.</span><span class="n">name</span> +</span><span id="simplify_literals-313"><a href="#simplify_literals-313"><span class="linenos">313</span></a> <span class="k">if</span> <span class="n">value</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="s2">"-"</span><span class="p">:</span> +</span><span id="simplify_literals-314"><a href="#simplify_literals-314"><span class="linenos">314</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">value</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span> +</span><span id="simplify_literals-315"><a href="#simplify_literals-315"><span class="linenos">315</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="sa">f</span><span class="s2">"-</span><span class="si">{</span><span class="n">value</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="simplify_literals-316"><a href="#simplify_literals-316"><span class="linenos">316</span></a> +</span><span id="simplify_literals-317"><a href="#simplify_literals-317"><span class="linenos">317</span></a> <span class="k">return</span> <span class="n">expression</span> +</span></pre></div> + + + + + </section> + <section id="simplify_parens"> + <input id="simplify_parens-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">simplify_parens</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="simplify_parens-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#simplify_parens"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="simplify_parens-379"><a href="#simplify_parens-379"><span class="linenos">379</span></a><span class="k">def</span> <span class="nf">simplify_parens</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="simplify_parens-380"><a href="#simplify_parens-380"><span class="linenos">380</span></a> <span class="k">if</span> <span class="p">(</span> +</span><span id="simplify_parens-381"><a href="#simplify_parens-381"><span class="linenos">381</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">)</span> +</span><span id="simplify_parens-382"><a href="#simplify_parens-382"><span class="linenos">382</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">)</span> +</span><span id="simplify_parens-383"><a href="#simplify_parens-383"><span class="linenos">383</span></a> <span class="ow">and</span> <span class="p">(</span> +</span><span id="simplify_parens-384"><a href="#simplify_parens-384"><span class="linenos">384</span></a> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">))</span> +</span><span id="simplify_parens-385"><a href="#simplify_parens-385"><span class="linenos">385</span></a> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Like</span><span class="p">))</span> +</span><span id="simplify_parens-386"><a href="#simplify_parens-386"><span class="linenos">386</span></a> <span class="ow">or</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">)</span> +</span><span id="simplify_parens-387"><a href="#simplify_parens-387"><span class="linenos">387</span></a> <span class="p">)</span> +</span><span id="simplify_parens-388"><a href="#simplify_parens-388"><span class="linenos">388</span></a> <span class="p">):</span> +</span><span id="simplify_parens-389"><a href="#simplify_parens-389"><span class="linenos">389</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span> +</span><span id="simplify_parens-390"><a href="#simplify_parens-390"><span class="linenos">390</span></a> <span class="k">return</span> <span class="n">expression</span> +</span></pre></div> + + + + + </section> + <section id="remove_where_true"> + <input id="remove_where_true-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">remove_where_true</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="remove_where_true-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#remove_where_true"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="remove_where_true-393"><a href="#remove_where_true-393"><span class="linenos">393</span></a><span class="k">def</span> <span class="nf">remove_where_true</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="remove_where_true-394"><a href="#remove_where_true-394"><span class="linenos">394</span></a> <span class="k">for</span> <span class="n">where</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Where</span><span class="p">):</span> +</span><span id="remove_where_true-395"><a href="#remove_where_true-395"><span class="linenos">395</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">):</span> +</span><span id="remove_where_true-396"><a href="#remove_where_true-396"><span class="linenos">396</span></a> <span class="n">where</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"where"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="remove_where_true-397"><a href="#remove_where_true-397"><span class="linenos">397</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">):</span> +</span><span id="remove_where_true-398"><a href="#remove_where_true-398"><span class="linenos">398</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)):</span> +</span><span id="remove_where_true-399"><a href="#remove_where_true-399"><span class="linenos">399</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"kind"</span><span class="p">,</span> <span class="s2">"CROSS"</span><span class="p">)</span> +</span><span id="remove_where_true-400"><a href="#remove_where_true-400"><span class="linenos">400</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"on"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span></pre></div> + + + + + </section> + <section id="always_true"> + <input id="always_true-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">always_true</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="always_true-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#always_true"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="always_true-403"><a href="#always_true-403"><span class="linenos">403</span></a><span class="k">def</span> <span class="nf">always_true</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="always_true-404"><a href="#always_true-404"><span class="linenos">404</span></a> <span class="k">return</span> <span class="n">expression</span> <span class="o">==</span> <span class="n">TRUE</span> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">)</span> +</span></pre></div> + + + + + </section> + <section id="is_complement"> + <input id="is_complement-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">is_complement</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">a</span>, </span><span class="param"><span class="n">b</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="is_complement-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#is_complement"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="is_complement-407"><a href="#is_complement-407"><span class="linenos">407</span></a><span class="k">def</span> <span class="nf">is_complement</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> +</span><span id="is_complement-408"><a href="#is_complement-408"><span class="linenos">408</span></a> <span class="k">return</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">)</span> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">a</span> +</span></pre></div> + + + + + </section> + <section id="eval_boolean"> + <input id="eval_boolean-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">eval_boolean</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="n">a</span>, </span><span class="param"><span class="n">b</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="eval_boolean-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#eval_boolean"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="eval_boolean-411"><a href="#eval_boolean-411"><span class="linenos">411</span></a><span class="k">def</span> <span class="nf">eval_boolean</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> +</span><span id="eval_boolean-412"><a href="#eval_boolean-412"><span class="linenos">412</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">)):</span> +</span><span id="eval_boolean-413"><a href="#eval_boolean-413"><span class="linenos">413</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">==</span> <span class="n">b</span><span class="p">)</span> +</span><span id="eval_boolean-414"><a href="#eval_boolean-414"><span class="linenos">414</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">):</span> +</span><span id="eval_boolean-415"><a href="#eval_boolean-415"><span class="linenos">415</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">!=</span> <span class="n">b</span><span class="p">)</span> +</span><span id="eval_boolean-416"><a href="#eval_boolean-416"><span class="linenos">416</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">):</span> +</span><span id="eval_boolean-417"><a href="#eval_boolean-417"><span class="linenos">417</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">></span> <span class="n">b</span><span class="p">)</span> +</span><span id="eval_boolean-418"><a href="#eval_boolean-418"><span class="linenos">418</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">):</span> +</span><span id="eval_boolean-419"><a href="#eval_boolean-419"><span class="linenos">419</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">>=</span> <span class="n">b</span><span class="p">)</span> +</span><span id="eval_boolean-420"><a href="#eval_boolean-420"><span class="linenos">420</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">):</span> +</span><span id="eval_boolean-421"><a href="#eval_boolean-421"><span class="linenos">421</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o"><</span> <span class="n">b</span><span class="p">)</span> +</span><span id="eval_boolean-422"><a href="#eval_boolean-422"><span class="linenos">422</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">):</span> +</span><span id="eval_boolean-423"><a href="#eval_boolean-423"><span class="linenos">423</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o"><=</span> <span class="n">b</span><span class="p">)</span> +</span><span id="eval_boolean-424"><a href="#eval_boolean-424"><span class="linenos">424</span></a> <span class="k">return</span> <span class="kc">None</span> +</span></pre></div> + + + + + </section> + <section id="extract_date"> + <input id="extract_date-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">extract_date</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">cast</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="extract_date-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#extract_date"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="extract_date-427"><a href="#extract_date-427"><span class="linenos">427</span></a><span class="k">def</span> <span class="nf">extract_date</span><span class="p">(</span><span class="n">cast</span><span class="p">):</span> +</span><span id="extract_date-428"><a href="#extract_date-428"><span class="linenos">428</span></a> <span class="c1"># The "fromisoformat" conversion could fail if the cast is used on an identifier,</span> +</span><span id="extract_date-429"><a href="#extract_date-429"><span class="linenos">429</span></a> <span class="c1"># so in that case we can't extract the date.</span> +</span><span id="extract_date-430"><a href="#extract_date-430"><span class="linenos">430</span></a> <span class="k">try</span><span class="p">:</span> +</span><span id="extract_date-431"><a href="#extract_date-431"><span class="linenos">431</span></a> <span class="k">if</span> <span class="n">cast</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"to"</span><span class="p">]</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">:</span> +</span><span id="extract_date-432"><a href="#extract_date-432"><span class="linenos">432</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="o">.</span><span class="n">fromisoformat</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="extract_date-433"><a href="#extract_date-433"><span class="linenos">433</span></a> <span class="k">if</span> <span class="n">cast</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"to"</span><span class="p">]</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">:</span> +</span><span id="extract_date-434"><a href="#extract_date-434"><span class="linenos">434</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="o">.</span><span class="n">fromisoformat</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="extract_date-435"><a href="#extract_date-435"><span class="linenos">435</span></a> <span class="k">except</span> <span class="ne">ValueError</span><span class="p">:</span> +</span><span id="extract_date-436"><a href="#extract_date-436"><span class="linenos">436</span></a> <span class="k">return</span> <span class="kc">None</span> +</span></pre></div> + + + + + </section> + <section id="extract_interval"> + <input id="extract_interval-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">extract_interval</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">interval</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="extract_interval-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#extract_interval"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="extract_interval-439"><a href="#extract_interval-439"><span class="linenos">439</span></a><span class="k">def</span> <span class="nf">extract_interval</span><span class="p">(</span><span class="n">interval</span><span class="p">):</span> +</span><span id="extract_interval-440"><a href="#extract_interval-440"><span class="linenos">440</span></a> <span class="k">try</span><span class="p">:</span> +</span><span id="extract_interval-441"><a href="#extract_interval-441"><span class="linenos">441</span></a> <span class="kn">from</span> <span class="nn">dateutil.relativedelta</span> <span class="kn">import</span> <span class="n">relativedelta</span> <span class="c1"># type: ignore</span> +</span><span id="extract_interval-442"><a href="#extract_interval-442"><span class="linenos">442</span></a> <span class="k">except</span> <span class="ne">ModuleNotFoundError</span><span class="p">:</span> +</span><span id="extract_interval-443"><a href="#extract_interval-443"><span class="linenos">443</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="extract_interval-444"><a href="#extract_interval-444"><span class="linenos">444</span></a> +</span><span id="extract_interval-445"><a href="#extract_interval-445"><span class="linenos">445</span></a> <span class="n">n</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">interval</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="extract_interval-446"><a href="#extract_interval-446"><span class="linenos">446</span></a> <span class="n">unit</span> <span class="o">=</span> <span class="n">interval</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">"unit"</span><span class="p">)</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> +</span><span id="extract_interval-447"><a href="#extract_interval-447"><span class="linenos">447</span></a> +</span><span id="extract_interval-448"><a href="#extract_interval-448"><span class="linenos">448</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"year"</span><span class="p">:</span> +</span><span id="extract_interval-449"><a href="#extract_interval-449"><span class="linenos">449</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">years</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> +</span><span id="extract_interval-450"><a href="#extract_interval-450"><span class="linenos">450</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"month"</span><span class="p">:</span> +</span><span id="extract_interval-451"><a href="#extract_interval-451"><span class="linenos">451</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">months</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> +</span><span id="extract_interval-452"><a href="#extract_interval-452"><span class="linenos">452</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"week"</span><span class="p">:</span> +</span><span id="extract_interval-453"><a href="#extract_interval-453"><span class="linenos">453</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">weeks</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> +</span><span id="extract_interval-454"><a href="#extract_interval-454"><span class="linenos">454</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"day"</span><span class="p">:</span> +</span><span id="extract_interval-455"><a href="#extract_interval-455"><span class="linenos">455</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">days</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> +</span><span id="extract_interval-456"><a href="#extract_interval-456"><span class="linenos">456</span></a> <span class="k">return</span> <span class="kc">None</span> +</span></pre></div> + + + + + </section> + <section id="date_literal"> + <input id="date_literal-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">date_literal</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">date</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="date_literal-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#date_literal"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="date_literal-459"><a href="#date_literal-459"><span class="linenos">459</span></a><span class="k">def</span> <span class="nf">date_literal</span><span class="p">(</span><span class="n">date</span><span class="p">):</span> +</span><span id="date_literal-460"><a href="#date_literal-460"><span class="linenos">460</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span> +</span><span id="date_literal-461"><a href="#date_literal-461"><span class="linenos">461</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">string</span><span class="p">(</span><span class="n">date</span><span class="p">),</span> +</span><span id="date_literal-462"><a href="#date_literal-462"><span class="linenos">462</span></a> <span class="s2">"DATETIME"</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">date</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">)</span> <span class="k">else</span> <span class="s2">"DATE"</span><span class="p">,</span> +</span><span id="date_literal-463"><a href="#date_literal-463"><span class="linenos">463</span></a> <span class="p">)</span> +</span></pre></div> + + + + + </section> + <section id="boolean_literal"> + <input id="boolean_literal-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">boolean_literal</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">condition</span></span><span class="return-annotation">):</span></span> + + <label class="view-source-button" for="boolean_literal-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#boolean_literal"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="boolean_literal-466"><a href="#boolean_literal-466"><span class="linenos">466</span></a><span class="k">def</span> <span class="nf">boolean_literal</span><span class="p">(</span><span class="n">condition</span><span class="p">):</span> +</span><span id="boolean_literal-467"><a href="#boolean_literal-467"><span class="linenos">467</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">condition</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span></pre></div> + + + + + </section> + </main> +<script> + function escapeHTML(html) { + return document.createElement('div').appendChild(document.createTextNode(html)).parentNode.innerHTML; + } + + const originalContent = document.querySelector("main.pdoc"); + let currentContent = originalContent; + + function setContent(innerHTML) { + let elem; + if (innerHTML) { + elem = document.createElement("main"); + elem.classList.add("pdoc"); + elem.innerHTML = innerHTML; + } else { + elem = originalContent; + } + if (currentContent !== elem) { + currentContent.replaceWith(elem); + currentContent = elem; + 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fetch pdoc search index"); + searchErr = "Cannot fetch search index."; + } + onInput(); + + document.querySelector("nav.pdoc").addEventListener("click", e => { + if (e.target.hash) { + searchBox.value = ""; + searchBox.dispatchEvent(new Event("input")); + } + }); + } + + function onInput() { + setContent((() => { + const term = getSearchTerm(); + if (!term) { + return null + } + if (searchErr) { + return `<h3>Error: ${searchErr}</h3>` + } + if (!search) { + return "<h3>Searching...</h3>" + } + + window.scrollTo({top: 0, left: 0, behavior: 'auto'}); + + const results = search(term); + + let html; + if (results.length === 0) { + html = `No search results for '${escapeHTML(term)}'.` + } else { + html = `<h4>${results.length} search result${results.length > 1 ? "s" : ""} for '${escapeHTML(term)}'.</h4>`; + } + for (let result of results.slice(0, 10)) { + let doc = result.doc; + let url = `../../${doc.modulename.replaceAll(".", "/")}.html`; + if (doc.qualname) { + url += `#${doc.qualname}`; + } + + let heading; + switch (result.doc.kind) { + case "function": + if (doc.fullname.endsWith(".__init__")) { + heading = `<span class="name">${doc.fullname.replace(/\.__init__$/, "")}</span>${doc.signature}`; + } else { + heading = `<span class="def">${doc.funcdef}</span> <span class="name">${doc.fullname}</span>${doc.signature}`; + } + break; + case "class": + heading = `<span class="def">class</span> <span class="name">${doc.fullname}</span>`; + if (doc.bases) + heading += `<wbr>(<span class="base">${doc.bases}</span>)`; + heading += `:`; + break; + case "variable": + heading = `<span class="name">${doc.fullname}</span>`; + if (doc.annotation) + heading += `<span class="annotation">${doc.annotation}</span>`; + if (doc.default_value) + heading += `<span class="default_value">${doc.default_value}</span>`; + break; + default: + heading = `<span class="name">${doc.fullname}</span>`; + break; + } + html += ` + <section class="search-result"> + <a href="${url}" class="attr ${doc.kind}">${heading}</a> + <div class="docstring">${doc.doc}</div> + </section> + `; + + } + return html; + })()); + } + + if (getSearchTerm()) { + initialize(); + searchBox.value = getSearchTerm(); + onInput(); + } else { + searchBox.addEventListener("focus", initialize, {once: true}); + } + + searchBox.addEventListener("keydown", e => { + if (["ArrowDown", "ArrowUp", "Enter"].includes(e.key)) { + let focused = currentContent.querySelector(".search-result.focused"); + if (!focused) { + currentContent.querySelector(".search-result").classList.add("focused"); + } else if ( + e.key === "ArrowDown" + && focused.nextElementSibling + && focused.nextElementSibling.classList.contains("search-result") + ) { + focused.classList.remove("focused"); + focused.nextElementSibling.classList.add("focused"); + focused.nextElementSibling.scrollIntoView({ + behavior: "smooth", + block: "nearest", + inline: "nearest" + }); + } else if ( + e.key === "ArrowUp" + && focused.previousElementSibling + && focused.previousElementSibling.classList.contains("search-result") + ) { + focused.classList.remove("focused"); + focused.previousElementSibling.classList.add("focused"); + focused.previousElementSibling.scrollIntoView({ + behavior: "smooth", + block: "nearest", + inline: "nearest" + }); + } else if ( + e.key === "Enter" + ) { + focused.querySelector("a").click(); + } + } + }); +</script></body> +</html>
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