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  <title>rcov/ruby/1.8/gems/diff-lcs-1.1.2/lib/diff/lcs/change.rb</title>
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  <h1>Rspec Steps C0 Coverage Information - RCov</h1>
  <h2>rcov/ruby/1.8/gems/diff-lcs-1.1.2/lib/diff/lcs/change.rb</h2>

  <div class="report_table_wrapper">
    <table class='report' id='report_table'>
      <thead>
        <tr>
          <th class="left_align">Name</th>
          <th class="right_align">Total Lines</th>
          <th class="right_align">Lines of Code</th>
          <th class="left_align">Total Coverage</th>
          <th class="left_align">Code Coverage</th>
        </tr>
      </thead>
      <tbody>
        <tr>
          <td class="left_align"><a href="rcov-ruby-1_8-gems-diff-lcs-1_1_2-lib-diff-lcs-change_rb.html">rcov/ruby/1.8/gems/diff-lcs-1.1.2/lib/diff/lcs/change.rb</a></td>
          <td class='right_align'><tt>169</tt></td>
          <td class='right_align'><tt>110</tt></td>
          <td class="left_align"><div class="percent_graph_legend"><tt class=''>54.44%</tt></div>
        <div class="percent_graph">
          <div class="covered" style="width:54px"></div>
          <div class="uncovered" style="width:46px"></div>
        </div></td>
          <td class="left_align"><div class="percent_graph_legend"><tt class=''>31.82%</tt></div>
        <div class="percent_graph">
          <div class="covered" style="width:32px"></div>
          <div class="uncovered" style="width:68px"></div>
        </div></td>
        </tr>
      </tbody>
    </table>
  </div>

  <h3>Key</h3>

  <div class="key"><pre><span class='marked'>Code reported as executed by Ruby looks like this...</span><span class='marked1'>and this: this line is also marked as covered.</span><span class='inferred'>Lines considered as run by rcov, but not reported by Ruby, look like this,</span><span class='inferred1'>and this: these lines were inferred by rcov (using simple heuristics).</span><span class='uncovered'>Finally, here's a line marked as not executed.</span></pre></div>

  <h3>Coverage Details</h3>

  <table class="details">
    <tbody>

        <tr class="inferred">
          <td><pre><a name="line1">1</a> #! /usr/env/bin ruby</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line2">2</a> #--</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line3">3</a> # Copyright 2004 Austin Ziegler &lt;diff-lcs@halostatue.ca&gt;</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line4">4</a> #   adapted from:</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line5">5</a> #     Algorithm::Diff (Perl) by Ned Konz &lt;perl@bike-nomad.com&gt;</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line6">6</a> #     Smalltalk by Mario I. Wolczko &lt;mario@wolczko.com&gt;</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line7">7</a> #   implements McIlroy-Hunt diff algorithm</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line8">8</a> #</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line9">9</a> # This program is free software. It may be redistributed and/or modified under</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line10">10</a> # the terms of the GPL version 2 (or later), the Perl Artistic licence, or the</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line11">11</a> # Ruby licence.</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line12">12</a> # </pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line13">13</a> # $Id: change.rb,v 1.4 2004/08/08 20:33:09 austin Exp $</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line14">14</a> #++</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line15">15</a> # Provides Diff::LCS::Change and Diff::LCS::ContextChange.</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line16">16</a> </pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line17">17</a>   # Centralises the change test code in Diff::LCS::Change and</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line18">18</a>   # Diff::LCS::ContextChange, since it's the same for both classes.</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line19">19</a> module Diff::LCS::ChangeTypeTests</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line20">20</a>   def deleting?</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line21">21</a>     @action == '-'</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line22">22</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line23">23</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line24">24</a>   def adding?</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line25">25</a>     @action == '+'</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line26">26</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line27">27</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line28">28</a>   def unchanged?</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line29">29</a>     @action == '='</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line30">30</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line31">31</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line32">32</a>   def changed?</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line33">33</a>     @changed == '!'</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line34">34</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line35">35</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line36">36</a>   def finished_a?</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line37">37</a>     @changed == '&gt;'</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line38">38</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line39">39</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line40">40</a>   def finished_b?</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line41">41</a>     @changed == '&lt;'</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line42">42</a>   end</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line43">43</a> end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line44">44</a> </pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line45">45</a>   # Represents a simplistic (non-contextual) change. Represents the removal or</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line46">46</a>   # addition of an element from either the old or the new sequenced enumerable.</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line47">47</a> class Diff::LCS::Change</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line48">48</a>     # Returns the action this Change represents. Can be '+' (#adding?), '-'</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line49">49</a>     # (#deleting?), '=' (#unchanged?), # or '!' (#changed?). When created by</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line50">50</a>     # Diff::LCS#diff or Diff::LCS#sdiff, it may also be '&gt;' (#finished_a?) or</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line51">51</a>     # '&lt;' (#finished_b?).</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line52">52</a>   attr_reader :action</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line53">53</a>   attr_reader :position</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line54">54</a>   attr_reader :element</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line55">55</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line56">56</a>   include Comparable</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line57">57</a>   def ==(other)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line58">58</a>     (self.action == other.action) and</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line59">59</a>     (self.position == other.position) and</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line60">60</a>     (self.element == other.element)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line61">61</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line62">62</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line63">63</a>   def &lt;=&gt;(other)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line64">64</a>     r = self.action &lt;=&gt; other.action</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line65">65</a>     r = self.position &lt;=&gt; other.position if r.zero?</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line66">66</a>     r = self.element &lt;=&gt; other.element if r.zero?</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line67">67</a>     r</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line68">68</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line69">69</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line70">70</a>   def initialize(action, position, element)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line71">71</a>     @action = action</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line72">72</a>     @position = position</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line73">73</a>     @element = element</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line74">74</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line75">75</a> </pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line76">76</a>     # Creates a Change from an array produced by Change#to_a.</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line77">77</a>   def to_a</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line78">78</a>     [@action, @position, @element]</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line79">79</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line80">80</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line81">81</a>   def self.from_a(arr)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line82">82</a>     Diff::LCS::Change.new(arr[0], arr[1], arr[2])</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line83">83</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line84">84</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line85">85</a>   include Diff::LCS::ChangeTypeTests</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line86">86</a> end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line87">87</a> </pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line88">88</a>   # Represents a contextual change. Contains the position and values of the</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line89">89</a>   # elements in the old and the new sequenced enumerables as well as the action</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line90">90</a>   # taken.</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line91">91</a> class Diff::LCS::ContextChange</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line92">92</a>     # Returns the action this Change represents. Can be '+' (#adding?), '-'</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line93">93</a>     # (#deleting?), '=' (#unchanged?), # or '!' (#changed?). When</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line94">94</a>     # created by Diff::LCS#diff or Diff::LCS#sdiff, it may also be '&gt;'</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line95">95</a>     # (#finished_a?) or '&lt;' (#finished_b?).</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line96">96</a>   attr_reader :action</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line97">97</a>   attr_reader :old_position</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line98">98</a>   attr_reader :old_element</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line99">99</a>   attr_reader :new_position</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line100">100</a>   attr_reader :new_element</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line101">101</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line102">102</a>   include Comparable</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line103">103</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line104">104</a>   def ==(other)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line105">105</a>     (@action == other.action) and</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line106">106</a>     (@old_position == other.old_position) and</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line107">107</a>     (@new_position == other.new_position) and</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line108">108</a>     (@old_element == other.old_element) and</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line109">109</a>     (@new_element == other.new_element)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line110">110</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line111">111</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line112">112</a>   def inspect(*args)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line113">113</a>     %Q(#&lt;#{self.class.name}:#{__id__} @action=#{action} positions=#{old_position},#{new_position} elements=#{old_element.inspect},#{new_element.inspect}&gt;)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line114">114</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line115">115</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line116">116</a>   def &lt;=&gt;(other)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line117">117</a>     r = @action &lt;=&gt; other.action</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line118">118</a>     r = @old_position &lt;=&gt; other.old_position if r.zero?</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line119">119</a>     r = @new_position &lt;=&gt; other.new_position if r.zero?</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line120">120</a>     r = @old_element &lt;=&gt; other.old_element if r.zero?</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line121">121</a>     r = @new_element &lt;=&gt; other.new_element if r.zero?</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line122">122</a>     r</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line123">123</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line124">124</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line125">125</a>   def initialize(action, old_position, old_element, new_position, new_element)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line126">126</a>     @action = action</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line127">127</a>     @old_position = old_position</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line128">128</a>     @old_element = old_element</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line129">129</a>     @new_position = new_position</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line130">130</a>     @new_element = new_element</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line131">131</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line132">132</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line133">133</a>   def to_a</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line134">134</a>     [@action, [@old_position, @old_element], [@new_position, @new_element]]</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line135">135</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line136">136</a> </pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line137">137</a>     # Creates a ContextChange from an array produced by ContextChange#to_a.</pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line138">138</a>   def self.from_a(arr)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line139">139</a>     if arr.size == 5</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line140">140</a>       Diff::LCS::ContextChange.new(arr[0], arr[1], arr[2], arr[3], arr[4])</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line141">141</a>     else</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line142">142</a>       Diff::LCS::ContextChange.new(arr[0], arr[1][0], arr[1][1], arr[2][0],</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line143">143</a>                                    arr[2][1])</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line144">144</a>     end</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line145">145</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line146">146</a> </pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line147">147</a>     # Simplifies a context change for use in some diff callbacks. '&lt;' actions</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line148">148</a>     # are converted to '-' and '&gt;' actions are converted to '+'. </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line149">149</a>   def self.simplify(event)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line150">150</a>     ea = event.to_a</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line151">151</a> </pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line152">152</a>     case ea[0]</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line153">153</a>     when '-'</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line154">154</a>       ea[2][1] = nil</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line155">155</a>     when '&lt;'</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line156">156</a>       ea[0] = '-'</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line157">157</a>       ea[2][1] = nil</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line158">158</a>     when '+'</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line159">159</a>       ea[1][1] = nil</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line160">160</a>     when '&gt;'</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line161">161</a>       ea[0] = '+'</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line162">162</a>       ea[1][1] = nil</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line163">163</a>     end</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line164">164</a> </pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line165">165</a>     Diff::LCS::ContextChange.from_a(ea)</pre></td>
        </tr>

        <tr class="uncovered">
          <td><pre><a name="line166">166</a>   end</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line167">167</a> </pre></td>
        </tr>

        <tr class="marked">
          <td><pre><a name="line168">168</a>   include Diff::LCS::ChangeTypeTests</pre></td>
        </tr>

        <tr class="inferred">
          <td><pre><a name="line169">169</a> end</pre></td>
        </tr>

    </tbody>
  </table>

  <p>Generated on Fri Apr 22 17:22:41 -0700 2011 with <a href="http://github.com/relevance/rcov">rcov 0.9.8</a></p>

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