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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="headertitle"><div class="title">CTID.h</div></div>
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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_CTID_H_INCLUDED</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="preprocessor">#define XRPL_RPC_CTID_H_INCLUDED</span></div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span> </div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="preprocessor">#include <boost/regex.hpp></span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span> </div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/optional.html">optional</a>></span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/regex.html">regex</a>></span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/sstream.html">sstream</a>></span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span> </div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespacexrpl.html">xrpl</a> {</div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span> </div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="keyword">namespace </span>RPC {</div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment">// CTID stands for Concise Transaction ID.</span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment">//</span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment">// The CTID comes from XLS-15d: Concise Transaction Identifier #34</span></div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment">//</span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment">// https://github.com/XRPLF/XRPL-Standards/discussions/34</span></div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="comment">//</span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="comment">// The Concise Transaction ID provides a way to identify a transaction</span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="comment">// that includes which network the transaction was submitted to.</span></div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> </div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="keyword">inline</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional<std::string></a></div>
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<div class="foldopen" id="foldopen00034" data-start="{" data-end="}">
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"><a class="line" href="namespacexrpl_1_1RPC.html#a06a08835183fbd9d9ece0de5094a2741"> 34</a></span><a class="code hl_function" href="namespacexrpl_1_1RPC.html#a06a08835183fbd9d9ece0de5094a2741">encodeCTID</a>(uint32_t ledgerSeq, uint32_t txnIndex, uint32_t networkID) <span class="keyword">noexcept</span></div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span>{</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">constexpr</span> uint32_t maxLedgerSeq = 0x0FFF'FFFF;</div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">constexpr</span> uint32_t maxTxnIndex = 0xFFFF;</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">constexpr</span> uint32_t maxNetworkID = 0xFFFF;</div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> </div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="keywordflow">if</span> (ledgerSeq > maxLedgerSeq || txnIndex > maxTxnIndex ||</div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> networkID > maxNetworkID)</div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <span class="keywordflow">return</span> <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::nullopt</a>;</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> </div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> uint64_t ctidValue =</div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> ((0xC000'0000ULL + <span class="keyword">static_cast<</span>uint64_t<span class="keyword">></span>(ledgerSeq)) << 32) |</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> ((<span class="keyword">static_cast<</span>uint64_t<span class="keyword">></span>(txnIndex) << 16) | networkID);</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> </div>
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<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/io/basic_stringstream.html">std::stringstream</a> buffer;</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> buffer << <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/io/manip/hex.html">std::hex</a> << <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/io/manip/uppercase.html">std::uppercase</a> << <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/io/manip/setfill.html">std::setfill</a>(<span class="charliteral">'0'</span>) << <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/io/manip/setw.html">std::setw</a>(16)</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> << ctidValue;</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="keywordflow">return</span> buffer.<a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/io/basic_stringstream/str.html">str</a>();</div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span>}</div>
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</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> </div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span><span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span><span class="keyword">inline</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/utility/optional.html">std::optional<std::tuple<uint32_t, uint16_t, uint16_t></a>></div>
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<div class="foldopen" id="foldopen00064" data-start="{" data-end="}">
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"><a class="line" href="namespacexrpl_1_1RPC.html#ac67959639d055543cb96464ae3e40998"> 64</a></span><a class="code hl_function" href="namespacexrpl_1_1RPC.html#ac67959639d055543cb96464ae3e40998">decodeCTID</a>(T <span class="keyword">const</span> ctid) <span class="keyword">noexcept</span></div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span>{</div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> uint64_t ctidValue = 0;</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> </div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="keywordflow">if</span> <span class="keyword">constexpr</span> (</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::is_same_v<T, std::string></a> || <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::is_same_v<T, std::string_view></a> ||</div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::is_same_v<T, char*></a> || <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::is_same_v<T, char const*></a>)</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> {</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <span class="keyword">const</span> ctidString(ctid);</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> </div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="keywordflow">if</span> (ctidString.<a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/string/basic_string/size.html">size</a>() != 16)</div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="keywordflow">return</span> <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::nullopt</a>;</div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> </div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <span class="keyword">static</span> boost::regex <span class="keyword">const</span> hexRegex(<span class="stringliteral">"^[0-9A-Fa-f]{16}$"</span>);</div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="keywordflow">if</span> (!boost::regex_match(ctidString, hexRegex))</div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> <span class="keywordflow">return</span> <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::nullopt</a>;</div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keywordflow">try</span></div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> {</div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> ctidValue = <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/string/basic_string/stoul.html">std::stoull</a>(ctidString, <span class="keyword">nullptr</span>, 16);</div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> }</div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <span class="comment">// LCOV_EXCL_START</span></div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keywordflow">catch</span> (...)</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> {</div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <span class="comment">// should be impossible to hit given the length/regex check</span></div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="keywordflow">return</span> <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::nullopt</a>;</div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> }</div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="comment">// LCOV_EXCL_STOP</span></div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> }</div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <span class="keywordflow">else</span> <span class="keywordflow">if</span> <span class="keyword">constexpr</span> (<a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::is_integral_v<T></a>)</div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> {</div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> ctidValue = <span class="keyword">static_cast<</span>uint64_t<span class="keyword">></span>(ctid);</div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> }</div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="keywordflow">else</span></div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> {</div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keywordflow">return</span> <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::nullopt</a>;</div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> }</div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> </div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="comment">// Validate CTID prefix.</span></div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="keyword">constexpr</span> uint64_t ctidPrefixMask = 0xF000'0000'0000'0000ULL;</div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="keyword">constexpr</span> uint64_t ctidPrefix = 0xC000'0000'0000'0000ULL;</div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <span class="keywordflow">if</span> ((ctidValue & ctidPrefixMask) != ctidPrefix)</div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <span class="keywordflow">return</span> <a class="code hl_variableRef" href="http://en.cppreference.com/w/cpp/types/is_same.html">std::nullopt</a>;</div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> </div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> uint32_t ledgerSeq = <span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>((ctidValue >> 32) & 0x0FFF'FFFF);</div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> uint16_t txnIndex = <span class="keyword">static_cast<</span>uint16_t<span class="keyword">></span>((ctidValue >> 16) & 0xFFFF);</div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> uint16_t networkID = <span class="keyword">static_cast<</span>uint16_t<span class="keyword">></span>(ctidValue & 0xFFFF);</div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> </div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> <span class="keywordflow">return</span> <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/utility/tuple/make_tuple.html">std::make_tuple</a>(ledgerSeq, txnIndex, networkID);</div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span>}</div>
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</div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> </div>
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<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span>} <span class="comment">// namespace RPC</span></div>
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<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span>} <span class="comment">// namespace xrpl</span></div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> </div>
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<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span><span class="preprocessor">#endif</span></div>
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<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>
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<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>
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<div class="ttc" id="ahex_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/manip/hex.html">std::hex</a></div><div class="ttdeci">T hex(T... args)</div></div>
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<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="amake_tuple_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/utility/tuple/make_tuple.html">std::make_tuple</a></div><div class="ttdeci">T make_tuple(T... args)</div></div>
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<div class="ttc" id="anamespacexrpl_1_1RPC_html_a06a08835183fbd9d9ece0de5094a2741"><div class="ttname"><a href="namespacexrpl_1_1RPC.html#a06a08835183fbd9d9ece0de5094a2741">xrpl::RPC::encodeCTID</a></div><div class="ttdeci">std::optional< std::string > encodeCTID(uint32_t ledgerSeq, uint32_t txnIndex, uint32_t networkID) noexcept</div><div class="ttdoc">Encodes ledger sequence, transaction index, and network ID into a CTID string.</div><div class="ttdef"><b>Definition</b> <a href="CTID_8h_source.html#l00034">CTID.h:34</a></div></div>
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<div class="ttc" id="anamespacexrpl_1_1RPC_html_ac67959639d055543cb96464ae3e40998"><div class="ttname"><a href="namespacexrpl_1_1RPC.html#ac67959639d055543cb96464ae3e40998">xrpl::RPC::decodeCTID</a></div><div class="ttdeci">std::optional< std::tuple< uint32_t, uint16_t, uint16_t > > decodeCTID(T const ctid) noexcept</div><div class="ttdoc">Decodes a CTID string or integer into its component parts.</div><div class="ttdef"><b>Definition</b> <a href="CTID_8h_source.html#l00064">CTID.h:64</a></div></div>
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<div class="ttc" id="anamespacexrpl_html"><div class="ttname"><a href="namespacexrpl.html">xrpl</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>
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<div class="ttc" id="aoptional_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/optional.html">optional</a></div></div>
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<div class="ttc" id="aregex_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/regex.html">regex</a></div></div>
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<div class="ttc" id="asetfill_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/manip/setfill.html">std::setfill</a></div><div class="ttdeci">T setfill(T... args)</div></div>
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<div class="ttc" id="asetw_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/manip/setw.html">std::setw</a></div><div class="ttdeci">T setw(T... args)</div></div>
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<div class="ttc" id="asize_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string/size.html">std::string::size</a></div><div class="ttdeci">T size(T... args)</div></div>
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<div class="ttc" id="asstream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/sstream.html">sstream</a></div></div>
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<div class="ttc" id="astoul_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string/stoul.html">std::stoull</a></div><div class="ttdeci">T stoull(T... args)</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>
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<div class="ttc" id="auppercase_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/manip/uppercase.html">std::uppercase</a></div><div class="ttdeci">T uppercase(T... args)</div></div>
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