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<li class="navelem"><a class="el" href="dir_a62226f9e3a6c7c5a3be455e2f87ae01.html">xrpld</a></li><li class="navelem"><a class="el" href="dir_42b876eb66f74e25995e23a7c0222dc7.html">rpc</a></li> </ul>
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="preprocessor">#ifndef XRPL_RPC_BOOKCHANGES_H_INCLUDED</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="preprocessor">#define XRPL_RPC_BOOKCHANGES_H_INCLUDED</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span> </div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="preprocessor">#include &lt;xrpl/json/json_value.h&gt;</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="preprocessor">#include &lt;xrpl/protocol/LedgerFormats.h&gt;</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="preprocessor">#include &lt;xrpl/protocol/STAmount.h&gt;</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="preprocessor">#include &lt;xrpl/protocol/STObject.h&gt;</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#include &lt;xrpl/protocol/TxFormats.h&gt;</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include &lt;xrpl/protocol/jss.h&gt;</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/memory.html">memory</a>&gt;</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span> </div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceJson.html">Json</a> {</div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="keyword">class </span>Value;</div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span>}</div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> </div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceripple.html">ripple</a> {</div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="keyword">class </span>ReadView;</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="keyword">class </span>Transaction;</div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="keyword">class </span>TxMeta;</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="keyword">class </span>STTx;</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="keyword">namespace </span>RPC {</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> </div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="keyword">template</span> &lt;<span class="keyword">class</span> L&gt;</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><a class="code hl_class" href="classJson_1_1Value.html">Json::Value</a></div>
<div class="foldopen" id="foldopen00028" data-start="{" data-end="}">
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"><a class="line" href="namespaceripple_1_1RPC.html#a2e549c81edcbd0befcfa4ee871c6f27e"> 28</a></span><a class="code hl_function" href="namespaceripple_1_1RPC.html#a2e549c81edcbd0befcfa4ee871c6f27e">computeBookChanges</a>(<a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr&lt;L const&gt;</a> <span class="keyword">const</span>&amp; lpAccepted)</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span>{</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/container/map.html">std::map</a>&lt;</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a>,</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/utility/tuple.html">std::tuple</a>&lt;</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a>, <span class="comment">// side A volume</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a>, <span class="comment">// side B volume</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a>, <span class="comment">// high rate</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a>, <span class="comment">// low rate</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a>, <span class="comment">// open rate</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a>, <span class="comment">// close rate</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional&lt;uint256&gt;</a>&gt;&gt; <span class="comment">// optional: domain id</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> tally;</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> </div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span>&amp; tx : lpAccepted-&gt;txs)</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> {</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <span class="keywordflow">if</span> (!tx.first || !tx.second ||</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> !tx.first-&gt;isFieldPresent(sfTransactionType))</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="keywordflow">continue</span>;</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> </div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional&lt;uint32_t&gt;</a> offerCancel;</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> uint16_t tt = tx.first-&gt;getFieldU16(sfTransactionType);</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="keywordflow">switch</span> (tt)</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> {</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="keywordflow">case</span> ttOFFER_CANCEL:</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <span class="keywordflow">case</span> ttOFFER_CREATE: {</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <span class="keywordflow">if</span> (tx.first-&gt;isFieldPresent(sfOfferSequence))</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> offerCancel = tx.first-&gt;getFieldU32(sfOfferSequence);</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> }</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="comment">// in future if any other ways emerge to cancel an offer</span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="comment">// this switch makes them easy to add</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="keywordflow">default</span>:</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> }</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> </div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span> <span class="keyword">const</span>&amp; node : tx.second-&gt;getFieldArray(sfAffectedNodes))</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> {</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <a class="code hl_class" href="classripple_1_1SField.html">SField</a> <span class="keyword">const</span>&amp; metaType = node.getFName();</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> uint16_t nodeType = node.getFieldU16(sfLedgerEntryType);</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="comment">// we only care about ltOFFER objects being modified or</span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="comment">// deleted</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="keywordflow">if</span> (nodeType != ltOFFER || metaType == sfCreatedNode)</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="keywordflow">continue</span>;</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> </div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="comment">// if either FF or PF are missing we can&#39;t compute</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="comment">// but generally these are cancelled rather than crossed</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="comment">// so skipping them is consistent</span></div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <span class="keywordflow">if</span> (!node.isFieldPresent(sfFinalFields) ||</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> !node.isFieldPresent(sfPreviousFields))</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> <span class="keywordflow">continue</span>;</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keyword">auto</span> <span class="keyword">const</span>&amp; ffBase = node.peekAtField(sfFinalFields);</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="keyword">auto</span> <span class="keyword">const</span>&amp; finalFields = ffBase.template downcast&lt;STObject&gt;();</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keyword">auto</span> <span class="keyword">const</span>&amp; pfBase = node.peekAtField(sfPreviousFields);</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> <span class="keyword">auto</span> <span class="keyword">const</span>&amp; previousFields = pfBase.template downcast&lt;STObject&gt;();</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="comment">// defensive case that should never be hit</span></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keywordflow">if</span> (!finalFields.isFieldPresent(sfTakerGets) ||</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> !finalFields.isFieldPresent(sfTakerPays) ||</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> !previousFields.isFieldPresent(sfTakerGets) ||</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> !previousFields.isFieldPresent(sfTakerPays))</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keywordflow">continue</span>;</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> </div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <span class="comment">// filter out any offers deleted by explicit offer cancels</span></div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <span class="keywordflow">if</span> (metaType == sfDeletedNode &amp;&amp; offerCancel &amp;&amp;</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> finalFields.getFieldU32(sfSequence) == *offerCancel)</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> <span class="keywordflow">continue</span>;</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> </div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="comment">// compute the difference in gets and pays actually</span></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="comment">// affected onto the offer</span></div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a> deltaGets = finalFields.getFieldAmount(sfTakerGets) -</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> previousFields.getFieldAmount(sfTakerGets);</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a> deltaPays = finalFields.getFieldAmount(sfTakerPays) -</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> previousFields.getFieldAmount(sfTakerPays);</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> </div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> g{<a class="code hl_function" href="namespaceripple.html#ac124fe6744b7fe887dec949b56b16d50">to_string</a>(deltaGets.<a class="code hl_function" href="classripple_1_1STAmount.html#acab76380a95d902071fd26ab3425bbe5">issue</a>())};</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> p{<a class="code hl_function" href="namespaceripple.html#ac124fe6744b7fe887dec949b56b16d50">to_string</a>(deltaPays.<a class="code hl_function" href="classripple_1_1STAmount.html#acab76380a95d902071fd26ab3425bbe5">issue</a>())};</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> </div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="keywordtype">bool</span> <span class="keyword">const</span> noswap =</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <a class="code hl_function" href="namespaceripple.html#a20d30277b9c78756b3d14493055a307c">isXRP</a>(deltaGets) ? true : (<a class="code hl_function" href="namespaceripple.html#a20d30277b9c78756b3d14493055a307c">isXRP</a>(deltaPays) ? false : (g &lt; p));</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a> first = noswap ? deltaGets : deltaPays;</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a> second = noswap ? deltaPays : deltaGets;</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> </div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> <span class="comment">// defensively programmed, should (probably) never happen</span></div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> <span class="keywordflow">if</span> (second == beast::zero)</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> <span class="keywordflow">continue</span>;</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> </div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a> rate = <a class="code hl_function" href="namespaceripple.html#a0ad557cc32ca87dcea19af8e30c63c6a">divide</a>(first, second, <a class="code hl_function" href="namespaceripple.html#a9e3dc59bb58c33f14b3c0d3070b94d98">noIssue</a>());</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> </div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> <span class="keywordflow">if</span> (first &lt; beast::zero)</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> first = -first;</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> </div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> <span class="keywordflow">if</span> (second &lt; beast::zero)</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> second = -second;</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> </div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/io/basic_stringstream.html">std::stringstream</a> ss;</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="keywordflow">if</span> (noswap)</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> ss &lt;&lt; g &lt;&lt; <span class="stringliteral">&quot;|&quot;</span> &lt;&lt; p;</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> ss &lt;&lt; p &lt;&lt; <span class="stringliteral">&quot;|&quot;</span> &lt;&lt; g;</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> </div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional&lt;uint256&gt;</a> domain = finalFields[~sfDomainID];</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> </div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> key{ss.<a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/io/basic_stringstream/str.html">str</a>()};</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> </div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> <span class="keywordflow">if</span> (tally.find(key) == tally.end())</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> tally[key] = {</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> first, <span class="comment">// side A vol</span></div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> second, <span class="comment">// side B vol</span></div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> rate, <span class="comment">// high</span></div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> rate, <span class="comment">// low</span></div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> rate, <span class="comment">// open</span></div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> rate, <span class="comment">// close</span></div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> domain};</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> {</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> <span class="comment">// increment volume</span></div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="keyword">auto</span>&amp; entry = tally[key];</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> </div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::get&lt;0&gt;</a>(entry) += first; <span class="comment">// side A vol</span></div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::get&lt;1&gt;</a>(entry) += second; <span class="comment">// side B vol</span></div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> </div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> <span class="keywordflow">if</span> (<a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::get&lt;2&gt;</a>(entry) &lt; rate) <span class="comment">// high</span></div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::get&lt;2&gt;</a>(entry) = rate;</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> </div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> <span class="keywordflow">if</span> (<a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::get&lt;3&gt;</a>(entry) &gt; rate) <span class="comment">// low</span></div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::get&lt;3&gt;</a>(entry) = rate;</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> </div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::get&lt;5&gt;</a>(entry) = rate; <span class="comment">// close</span></div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::get&lt;6&gt;</a>(entry) = domain; <span class="comment">// domain</span></div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> }</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> }</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> }</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> </div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> <a class="code hl_class" href="classJson_1_1Value.html">Json::Value</a> jvObj(<a class="code hl_enumvalue" href="namespaceJson.html#a7d654b75c16a57007925868e38212b4eae8386dcfc36d1ae897745f7b4f77a1f6">Json::objectValue</a>);</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> jvObj[jss::type] = <span class="stringliteral">&quot;bookChanges&quot;</span>;</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> <span class="comment">// retrieve validated information from LedgerHeader class</span></div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> jvObj[jss::validated] = lpAccepted-&gt;info().validated;</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> jvObj[jss::ledger_index] = lpAccepted-&gt;info().seq;</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> jvObj[jss::ledger_hash] = <a class="code hl_function" href="namespaceripple.html#ac124fe6744b7fe887dec949b56b16d50">to_string</a>(lpAccepted-&gt;info().hash);</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> jvObj[jss::ledger_time] = <a class="code hl_typedef" href="classJson_1_1Value.html#a10794060631f3e5f895739cfd2cc98b2">Json::Value::UInt</a>(</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> lpAccepted-&gt;info().closeTime.time_since_epoch().count());</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> </div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> jvObj[jss::changes] = <a class="code hl_enumvalue" href="namespaceJson.html#a7d654b75c16a57007925868e38212b4eadc8f264f36b55b063c78126b335415f4">Json::arrayValue</a>;</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> </div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span> <span class="keyword">const</span>&amp; entry : tally)</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> {</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> <a class="code hl_class" href="classJson_1_1Value.html">Json::Value</a>&amp; inner = jvObj[jss::changes].<a class="code hl_function" href="classJson_1_1Value.html#a21526b61dea2a1771030473e6248621e">append</a>(<a class="code hl_enumvalue" href="namespaceJson.html#a7d654b75c16a57007925868e38212b4eae8386dcfc36d1ae897745f7b4f77a1f6">Json::objectValue</a>);</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> </div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a> volA = <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::get&lt;0&gt;</a>(entry.second);</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a> volB = <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::get&lt;1&gt;</a>(entry.second);</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> </div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> inner[jss::currency_a] =</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> (<a class="code hl_function" href="namespaceripple.html#a20d30277b9c78756b3d14493055a307c">isXRP</a>(volA) ? <span class="stringliteral">&quot;XRP_drops&quot;</span> : <a class="code hl_function" href="namespaceripple.html#ac124fe6744b7fe887dec949b56b16d50">to_string</a>(volA.<a class="code hl_function" href="classripple_1_1STAmount.html#acab76380a95d902071fd26ab3425bbe5">issue</a>()));</div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> inner[jss::currency_b] =</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> (<a class="code hl_function" href="namespaceripple.html#a20d30277b9c78756b3d14493055a307c">isXRP</a>(volB) ? <span class="stringliteral">&quot;XRP_drops&quot;</span> : <a class="code hl_function" href="namespaceripple.html#ac124fe6744b7fe887dec949b56b16d50">to_string</a>(volB.<a class="code hl_function" href="classripple_1_1STAmount.html#acab76380a95d902071fd26ab3425bbe5">issue</a>()));</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> </div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> inner[jss::volume_a] =</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> (<a class="code hl_function" href="namespaceripple.html#a20d30277b9c78756b3d14493055a307c">isXRP</a>(volA) ? <a class="code hl_function" href="namespaceripple.html#ac124fe6744b7fe887dec949b56b16d50">to_string</a>(volA.<a class="code hl_function" href="classripple_1_1STAmount.html#a6c2ca92e9c91e2a34493d61e02d79ebf">xrp</a>()) : <a class="code hl_function" href="namespaceripple.html#ac124fe6744b7fe887dec949b56b16d50">to_string</a>(volA.<a class="code hl_function" href="classripple_1_1STAmount.html#a094bda660d23e258021a2c63112ebc9a">iou</a>()));</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> inner[jss::volume_b] =</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> (<a class="code hl_function" href="namespaceripple.html#a20d30277b9c78756b3d14493055a307c">isXRP</a>(volB) ? <a class="code hl_function" href="namespaceripple.html#ac124fe6744b7fe887dec949b56b16d50">to_string</a>(volB.<a class="code hl_function" href="classripple_1_1STAmount.html#a6c2ca92e9c91e2a34493d61e02d79ebf">xrp</a>()) : <a class="code hl_function" href="namespaceripple.html#ac124fe6744b7fe887dec949b56b16d50">to_string</a>(volB.<a class="code hl_function" href="classripple_1_1STAmount.html#a094bda660d23e258021a2c63112ebc9a">iou</a>()));</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> </div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> inner[jss::high] = <a class="code hl_function" href="namespaceripple.html#ac124fe6744b7fe887dec949b56b16d50">to_string</a>(<a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::get&lt;2&gt;</a>(entry.second).iou());</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> inner[jss::low] = <a class="code hl_function" href="namespaceripple.html#ac124fe6744b7fe887dec949b56b16d50">to_string</a>(<a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::get&lt;3&gt;</a>(entry.second).iou());</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> inner[jss::open] = <a class="code hl_function" href="namespaceripple.html#ac124fe6744b7fe887dec949b56b16d50">to_string</a>(<a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::get&lt;4&gt;</a>(entry.second).iou());</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> inner[jss::close] = <a class="code hl_function" href="namespaceripple.html#ac124fe6744b7fe887dec949b56b16d50">to_string</a>(<a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::get&lt;5&gt;</a>(entry.second).iou());</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> </div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional&lt;uint256&gt;</a> <span class="keyword">const</span> domain = <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::get&lt;6&gt;</a>(entry.second);</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> <span class="keywordflow">if</span> (domain)</div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> inner[jss::domain] = <a class="code hl_function" href="namespaceripple.html#ac124fe6744b7fe887dec949b56b16d50">to_string</a>(*domain);</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> }</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> </div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> <span class="keywordflow">return</span> jvObj;</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span>}</div>
</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> </div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span>} <span class="comment">// namespace RPC</span></div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span>} <span class="comment">// namespace ripple</span></div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> </div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span><span class="preprocessor">#endif</span></div>
<div class="ttc" id="abasic_string_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div></div>
<div class="ttc" id="abasic_stringstream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_stringstream.html">std::stringstream</a></div></div>
<div class="ttc" id="aclassJson_1_1Value_html"><div class="ttname"><a href="classJson_1_1Value.html">Json::Value</a></div><div class="ttdoc">Represents a JSON value.</div><div class="ttdef"><b>Definition</b> <a href="json__value_8h_source.html#l00130">json_value.h:131</a></div></div>
<div class="ttc" id="aclassJson_1_1Value_html_a10794060631f3e5f895739cfd2cc98b2"><div class="ttname"><a href="classJson_1_1Value.html#a10794060631f3e5f895739cfd2cc98b2">Json::Value::UInt</a></div><div class="ttdeci">Json::UInt UInt</div><div class="ttdef"><b>Definition</b> <a href="json__value_8h_source.html#l00138">json_value.h:138</a></div></div>
<div class="ttc" id="aclassJson_1_1Value_html_a21526b61dea2a1771030473e6248621e"><div class="ttname"><a href="classJson_1_1Value.html#a21526b61dea2a1771030473e6248621e">Json::Value::append</a></div><div class="ttdeci">Value &amp; append(Value const &amp;value)</div><div class="ttdoc">Append value to array at the end.</div><div class="ttdef"><b>Definition</b> <a href="json__value_8cpp_source.html#l00978">json_value.cpp:978</a></div></div>
<div class="ttc" id="aclassripple_1_1SField_html"><div class="ttname"><a href="classripple_1_1SField.html">ripple::SField</a></div><div class="ttdoc">Identifies fields.</div><div class="ttdef"><b>Definition</b> <a href="SField_8h_source.html#l00126">SField.h:127</a></div></div>
<div class="ttc" id="aclassripple_1_1STAmount_html"><div class="ttname"><a href="classripple_1_1STAmount.html">ripple::STAmount</a></div><div class="ttdef"><b>Definition</b> <a href="STAmount_8h_source.html#l00030">STAmount.h:31</a></div></div>
<div class="ttc" id="aclassripple_1_1STAmount_html_a094bda660d23e258021a2c63112ebc9a"><div class="ttname"><a href="classripple_1_1STAmount.html#a094bda660d23e258021a2c63112ebc9a">ripple::STAmount::iou</a></div><div class="ttdeci">IOUAmount iou() const</div><div class="ttdef"><b>Definition</b> <a href="STAmount_8cpp_source.html#l00280">STAmount.cpp:280</a></div></div>
<div class="ttc" id="aclassripple_1_1STAmount_html_a6c2ca92e9c91e2a34493d61e02d79ebf"><div class="ttname"><a href="classripple_1_1STAmount.html#a6c2ca92e9c91e2a34493d61e02d79ebf">ripple::STAmount::xrp</a></div><div class="ttdeci">XRPAmount xrp() const</div><div class="ttdef"><b>Definition</b> <a href="STAmount_8cpp_source.html#l00264">STAmount.cpp:264</a></div></div>
<div class="ttc" id="aclassripple_1_1STAmount_html_acab76380a95d902071fd26ab3425bbe5"><div class="ttname"><a href="classripple_1_1STAmount.html#acab76380a95d902071fd26ab3425bbe5">ripple::STAmount::issue</a></div><div class="ttdeci">Issue const &amp; issue() const</div><div class="ttdef"><b>Definition</b> <a href="STAmount_8h_source.html#l00477">STAmount.h:477</a></div></div>
<div class="ttc" id="ais_same_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/is_same.html">std::is_same_v</a></div><div class="ttdeci">T is_same_v</div></div>
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<div class="ttc" id="anamespaceJson_html"><div class="ttname"><a href="namespaceJson.html">Json</a></div><div class="ttdoc">JSON (JavaScript Object Notation).</div><div class="ttdef"><b>Definition</b> <a href="json__errors_8h_source.html#l00006">json_errors.h:6</a></div></div>
<div class="ttc" id="anamespaceJson_html_a7d654b75c16a57007925868e38212b4eadc8f264f36b55b063c78126b335415f4"><div class="ttname"><a href="namespaceJson.html#a7d654b75c16a57007925868e38212b4eadc8f264f36b55b063c78126b335415f4">Json::arrayValue</a></div><div class="ttdeci">@ arrayValue</div><div class="ttdoc">array value (ordered list)</div><div class="ttdef"><b>Definition</b> <a href="json__value_8h_source.html#l00026">json_value.h:26</a></div></div>
<div class="ttc" id="anamespaceJson_html_a7d654b75c16a57007925868e38212b4eae8386dcfc36d1ae897745f7b4f77a1f6"><div class="ttname"><a href="namespaceJson.html#a7d654b75c16a57007925868e38212b4eae8386dcfc36d1ae897745f7b4f77a1f6">Json::objectValue</a></div><div class="ttdeci">@ objectValue</div><div class="ttdoc">object value (collection of name/value pairs).</div><div class="ttdef"><b>Definition</b> <a href="json__value_8h_source.html#l00028">json_value.h:27</a></div></div>
<div class="ttc" id="anamespaceripple_1_1RPC_html_a2e549c81edcbd0befcfa4ee871c6f27e"><div class="ttname"><a href="namespaceripple_1_1RPC.html#a2e549c81edcbd0befcfa4ee871c6f27e">ripple::RPC::computeBookChanges</a></div><div class="ttdeci">Json::Value computeBookChanges(std::shared_ptr&lt; L const &gt; const &amp;lpAccepted)</div><div class="ttdef"><b>Definition</b> <a href="BookChanges_8h_source.html#l00028">BookChanges.h:28</a></div></div>
<div class="ttc" id="anamespaceripple_html"><div class="ttname"><a href="namespaceripple.html">ripple</a></div><div class="ttdoc">Use hash_* containers for keys that do not need a cryptographically secure hashing algorithm.</div><div class="ttdef"><b>Definition</b> <a href="algorithm_8h_source.html#l00006">algorithm.h:6</a></div></div>
<div class="ttc" id="anamespaceripple_html_a0ad557cc32ca87dcea19af8e30c63c6a"><div class="ttname"><a href="namespaceripple.html#a0ad557cc32ca87dcea19af8e30c63c6a">ripple::divide</a></div><div class="ttdeci">STAmount divide(STAmount const &amp;amount, Rate const &amp;rate)</div><div class="ttdef"><b>Definition</b> <a href="Rate2_8cpp_source.html#l00074">Rate2.cpp:74</a></div></div>
<div class="ttc" id="anamespaceripple_html_a20d30277b9c78756b3d14493055a307c"><div class="ttname"><a href="namespaceripple.html#a20d30277b9c78756b3d14493055a307c">ripple::isXRP</a></div><div class="ttdeci">bool isXRP(AccountID const &amp;c)</div><div class="ttdef"><b>Definition</b> <a href="AccountID_8h_source.html#l00071">AccountID.h:71</a></div></div>
<div class="ttc" id="anamespaceripple_html_a9e3dc59bb58c33f14b3c0d3070b94d98"><div class="ttname"><a href="namespaceripple.html#a9e3dc59bb58c33f14b3c0d3070b94d98">ripple::noIssue</a></div><div class="ttdeci">Issue const &amp; noIssue()</div><div class="ttdoc">Returns an asset specifier that represents no account and currency.</div><div class="ttdef"><b>Definition</b> <a href="Issue_8h_source.html#l00104">Issue.h:104</a></div></div>
<div class="ttc" id="anamespaceripple_html_ac124fe6744b7fe887dec949b56b16d50"><div class="ttname"><a href="namespaceripple.html#ac124fe6744b7fe887dec949b56b16d50">ripple::to_string</a></div><div class="ttdeci">std::string to_string(base_uint&lt; Bits, Tag &gt; const &amp;a)</div><div class="ttdef"><b>Definition</b> <a href="base__uint_8h_source.html#l00611">base_uint.h:611</a></div></div>
<div class="ttc" id="aoptional_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional</a></div></div>
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<div class="ttc" id="astr_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_stringstream/str.html">std::stringstream::str</a></div><div class="ttdeci">T str(T... args)</div></div>
<div class="ttc" id="atuple_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/utility/tuple.html">std::tuple</a></div></div>
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