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      <dt style="clear: both; float: left; font-weight: bold; width: 8em">Author</dt>
      <dd style="margin-left: 8.5em">Kouhei Sutou &lt;kou****@clear*****&gt;</dd>
      <dt style="clear: both; float: left; font-weight: bold; width: 8em">Date</dt>
      <dd style="margin-left: 8.5em">2015-04-02 13:19:08 +0900 (Thu, 02 Apr 2015)</dd>
      <dt style="clear: both; float: left; font-weight: bold; width: 8em">New Revision</dt>
      <dd style="margin-left: 8.5em"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1">147c4af55627c4cf7cdfc9c95f00aa057de6b9f1</a></dd>
      <dt style="clear: both; float: left; font-weight: bold; width: 8em">Message</dt>
      <dd style="margin-left: 8.5em"><pre style="border: 1px solid #aaa; font-family: Consolas, Menlo, &quot;Liberation Mono&quot;, Courier, monospace; line-height: 1.2; padding: 0.5em; width: auto">mruby: support regexp pattern for estimating size</pre></dd>
      <dt style="clear: both; float: left; font-weight: bold; width: 8em">Modified files</dt>
      <dd style="margin-left: 8.5em">
        <ul>
          <li><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#diff-0">lib/mrb/scripts/expression_size_estimator.rb</a></li>
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<pre style="border: 0; font-family: Consolas, Menlo, &quot;Liberation Mono&quot;, Courier, monospace; line-height: 1.2; margin: 0; padding: 0.5em; white-space: normal; width: auto"><span class="diff-header" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre">  Modified: lib/mrb/scripts/expression_size_estimator.rb (+14 -0)</span>
<span class="diff-header-mark" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre">===================================================================</span>
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<pre style="border: 0; font-family: Consolas, Menlo, &quot;Liberation Mono&quot;, Courier, monospace; line-height: 1.2; margin: 0; padding: 0.5em; white-space: normal; width: auto"><span class="diff-line-number-hunk-header" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0L54">...</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0L55">55</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0L56">56</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0L57">57</a></span>
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<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0L58">58</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0L59">59</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0L60">60</a></span>
<span class="diff-line-number-hunk-header" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0L81">...</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0L82">82</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0L83">83</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0L84">84</a></span>
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<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0L85">85</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0L86">86</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0L87">87</a></span>
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<pre style="border: 0; font-family: Consolas, Menlo, &quot;Liberation Mono&quot;, Courier, monospace; line-height: 1.2; margin: 0; padding: 0.5em; white-space: normal; width: auto"><span class="diff-line-number-hunk-header" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R54">...</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R55">55</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R56">56</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R57">57</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R58">58</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R59">59</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R60">60</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R61">61</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R62">62</a></span>
<span class="diff-line-number-hunk-header" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R83">...</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R84">84</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R85">85</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R86">86</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R87">87</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R88">88</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R89">89</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R90">90</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R91">91</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R92">92</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R93">93</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R94">94</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R95">95</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R96">96</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R97">97</a></span>
<span class="diff-line-number-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R98">98</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R99">99</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R100">100</a></span>
<span class="diff-line-number-not-changed" style="display: block; white-space: pre"><a href="https://github.com/groonga/groonga/commit/147c4af55627c4cf7cdfc9c95f00aa057de6b9f1#L0R101">101</a></span>
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<pre style="border: 0; font-family: Consolas, Menlo, &quot;Liberation Mono&quot;, Courier, monospace; line-height: 1.2; margin: 0; padding: 0.5em; white-space: normal; width: auto"><span class="diff-hunk-header" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre">@@ -55,6 +55,8 @@ <span class="diff-context" style="background-color: #ffffaa; color: #000000">module Groonga</span></span>
<span class="diff-not-changed" style="display: block; white-space: pre">         case data.op</span>
<span class="diff-not-changed" style="display: block; white-space: pre">         when Operator::MATCH</span>
<span class="diff-not-changed" style="display: block; white-space: pre">           size = estimate_match(data, search_index)</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+        when Operator::REGEXP</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+          size = estimate_regexp(data, search_index)</span>
<span class="diff-not-changed" style="display: block; white-space: pre">         when Operator::EQUAL</span>
<span class="diff-not-changed" style="display: block; white-space: pre">           size = estimate_equal(data, search_index)</span>
<span class="diff-not-changed" style="display: block; white-space: pre">         when Operator::LESS,</span>
<span class="diff-hunk-header" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre">@@ -82,6 +84,18 @@ <span class="diff-context" style="background-color: #ffffaa; color: #000000">module Groonga</span></span>
<span class="diff-not-changed" style="display: block; white-space: pre">       index_column.estimate_size(:query =&gt; data.query.value)</span>
<span class="diff-not-changed" style="display: block; white-space: pre">     end</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    def estimate_regexp(data, search_index)</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+      index_column = search_index.index_column</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+      while index_column.is_a?(Accessor)</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+        index_info = index_column.find_index(Operator::REGEXP)</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+        return nil if index_info.nil?</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+        index_column = index_info.index</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+      end</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+      index_column.estimate_size(:query =&gt; data.query.value,</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+                                 :mode =&gt; Operator::REGEXP)</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+    end</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+</span>
<span class="diff-not-changed" style="display: block; white-space: pre">     def estimate_equal(data, search_index)</span>
<span class="diff-not-changed" style="display: block; white-space: pre">       index_column = search_index.index_column</span>
<span class="diff-not-changed" style="display: block; white-space: pre">       if index_column.is_a?(Accessor)</span>
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