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<a href="binary__extension_8hpp.html">См. документацию.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span> </div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="preprocessor">#include &quot;<a class="code" href="check_8hpp.html">check.hpp</a>&quot;</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span> </div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceeosio.html">eosio</a> {</div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">class </span>binary_extension {</div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">using</span> value_type = T;</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">constexpr</span> binary_extension() {}</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">constexpr</span> binary_extension( <span class="keyword">const</span> T&amp; ext )</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> :_has_value(true)</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> {</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> ::new (&amp;_data) T(ext);</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> <span class="keyword">constexpr</span> binary_extension( T&amp;&amp; ext )</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> :_has_value(true)</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> {</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> ::new (&amp;_data) T(std::move(ext));</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> }</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span>... Args&gt;</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">constexpr</span> binary_extension( std::in_place_t, Args&amp;&amp;... args )</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> :_has_value(true)</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> {</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> ::new (&amp;_data) T(std::forward&lt;Args&gt;(args)...);</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> </div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> <span class="keyword">constexpr</span> binary_extension( <span class="keyword">const</span> binary_extension&amp; other )</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> :_has_value(other._has_value)</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> {</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="keywordflow">if</span>( other._has_value ) ::new (&amp;_data) T( *other );</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> </div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">constexpr</span> binary_extension( binary_extension&amp;&amp; other )</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> :_has_value(other._has_value)</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">if</span>( other._has_value ) {</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> ::new (&amp;_data) T( *std::move(other) );</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> other._has_value = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> }</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> }</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> ~binary_extension() { reset(); }</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> </div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keyword">constexpr</span> binary_extension&amp; operator = (<span class="keyword">const</span> binary_extension&amp; other) {</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="keywordflow">if</span> (has_value())</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> reset();</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> <span class="keywordflow">if</span> (other.has_value()) {</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> ::new (&amp;_data) T(*other);</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> _has_value = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> }</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> }</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> </div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="keyword">constexpr</span> binary_extension&amp; operator = (binary_extension&amp;&amp; other) {</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="keywordflow">if</span> (has_value())</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> reset();</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> </div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="keywordflow">if</span> (other.has_value()) {</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> ::new (&amp;_data) T(*other);</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> _has_value = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> other._has_value = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> }</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> }</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keyword">constexpr</span> <span class="keyword">explicit</span> <span class="keyword">operator</span> bool()<span class="keyword">const </span>{ <span class="keywordflow">return</span> _has_value; }</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> has_value()<span class="keyword">const </span>{ <span class="keywordflow">return</span> _has_value; }</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> </div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keyword">constexpr</span> T&amp; value()&amp; {</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keywordflow">if</span> (!_has_value) {</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <a class="code hl_function" href="group__system_ga54ad844cfe9f99f2c7cfcc935559e633.html#ga54ad844cfe9f99f2c7cfcc935559e633">check</a>(<span class="keyword">false</span>, <span class="stringliteral">&quot;cannot get value of empty binary_extension&quot;</span>);</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> }</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> <span class="keywordflow">return</span> _get();</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> }</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> </div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> </div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="keyword">constexpr</span> <span class="keyword">const</span> T&amp; value()const &amp; {</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keywordflow">if</span> (!_has_value) {</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <a class="code hl_function" href="group__system_ga54ad844cfe9f99f2c7cfcc935559e633.html#ga54ad844cfe9f99f2c7cfcc935559e633">check</a>(<span class="keyword">false</span>, <span class="stringliteral">&quot;cannot get value of empty binary_extension&quot;</span>);</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> <span class="keywordflow">return</span> _get();</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> }</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> </div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> U&gt;</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> <span class="keyword">constexpr</span> <span class="keyword">auto</span> value_or( U&amp;&amp; def ) -&gt; std::enable_if_t&lt;std::is_convertible&lt;U, T&gt;::value, T&amp;&gt;&amp; {</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> <span class="keywordflow">if</span> (_has_value)</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> <span class="keywordflow">return</span> _get();</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> <span class="keywordflow">return</span> def;</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> }</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <span class="keyword">constexpr</span> T&amp;&amp; value_or()&amp;&amp; {</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <span class="keywordflow">if</span> (!_has_value)</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> <span class="keywordflow">return</span> std::move(T());</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> _has_value = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <span class="keywordflow">return</span> std::move(_get());</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="keyword">constexpr</span> <span class="keyword">const</span> T&amp;&amp; value_or()const&amp;&amp; {</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="keywordflow">if</span> (!_has_value)</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <span class="keywordflow">return</span> std::move(T());</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> _has_value = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="keywordflow">return</span> std::move(_get());</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> }</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <span class="keyword">constexpr</span> T value_or()&amp; {</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="keywordflow">if</span> (!_has_value)</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> <span class="keywordflow">return</span> T();</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <span class="keywordflow">return</span> _get();</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> <span class="keyword">constexpr</span> T value_or()const&amp; {</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <span class="keywordflow">if</span> (!_has_value)</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> <span class="keywordflow">return</span> T();</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="keywordflow">return</span> _get();</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> }</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> <span class="keyword">constexpr</span> T* operator-&gt;() {</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="keywordflow">return</span> &amp;_get();</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> }</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> <span class="keyword">constexpr</span> <span class="keyword">const</span> T* operator-&gt;()<span class="keyword">const </span>{</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> <span class="keywordflow">return</span> &amp;_get();</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</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="keyword">constexpr</span> T&amp; operator*()&amp; {</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="keywordflow">return</span> _get();</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> <span class="keyword">constexpr</span> <span class="keyword">const</span> T&amp; operator*()const&amp; {</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> <span class="keywordflow">return</span> _get();</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="keyword">constexpr</span> <span class="keyword">const</span> T&amp;&amp; operator*()const&amp;&amp; {</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <span class="keywordflow">return</span> std::move(_get());</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="keyword">constexpr</span> T&amp;&amp; operator*()&amp;&amp; {</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <span class="keywordflow">return</span> std::move(_get());</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> </div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> <span class="keyword">template</span>&lt;<span class="keyword">typename</span> ...Args&gt;</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> T&amp; emplace(Args&amp;&amp; ... args)&amp; {</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> <span class="keywordflow">if</span> (_has_value) {</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> reset();</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> </div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> ::new (&amp;_data) T( std::forward&lt;Args&gt;(args)... );</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> _has_value = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> </div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> <span class="keywordflow">return</span> _get();</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> }</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> </div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> <span class="keywordtype">void</span> reset() {</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> <span class="keywordflow">if</span>( _has_value ) {</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> _get().~value_type();</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> _has_value = <span class="keyword">false</span>;</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> }</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> </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> <span class="keyword">private</span>:</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> <span class="keywordtype">bool</span> _has_value = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> <span class="keyword">typename</span> std::aligned_storage&lt;<span class="keyword">sizeof</span>(T), <span class="keyword">alignof</span>(T)&gt;::type _data;</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> </div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> <span class="keyword">constexpr</span> T&amp; _get() {</div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> <span class="keywordflow">return</span> *<span class="keyword">reinterpret_cast&lt;</span>T*<span class="keyword">&gt;</span>(&amp;_data);</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> }</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> <span class="keyword">constexpr</span> <span class="keyword">const</span> T&amp; _get()<span class="keyword">const </span>{</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> <span class="keywordflow">return</span> *<span class="keyword">reinterpret_cast&lt;</span><span class="keyword">const </span>T*<span class="keyword">&gt;</span>(&amp;_data);</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> }</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> };</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> </div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> </div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> <span class="keyword">template</span>&lt;<span class="keyword">typename</span> DataStream, <span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> <span class="keyword">inline</span> DataStream&amp; <a class="code hl_function" href="namespaceeosio_ac9f0396ed775d5fe67df4b29bc7fc61f.html#ac9f0396ed775d5fe67df4b29bc7fc61f">operator&lt;&lt;</a>(DataStream&amp; ds, <span class="keyword">const</span> eosio::binary_extension&lt;T&gt;&amp; be) {</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> ds &lt;&lt; be.value_or();</div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> <span class="keywordflow">return</span> ds;</div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> }</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> </div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> <span class="keyword">template</span>&lt;<span class="keyword">typename</span> DataStream, <span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> <span class="keyword">inline</span> DataStream&amp; <a class="code hl_function" href="namespaceeosio_a0071f0e52a33e72d2b0da6fb69fd5a01.html#a0071f0e52a33e72d2b0da6fb69fd5a01">operator&gt;&gt;</a>(DataStream&amp; ds, eosio::binary_extension&lt;T&gt;&amp; be) {</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> <span class="keywordflow">if</span>( ds.remaining() ) {</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> T val;</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> ds &gt;&gt; val;</div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> be.emplace(val);</div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> }</div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> <span class="keywordflow">return</span> ds;</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> }</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span> </div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> </div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span>} <span class="comment">// namespace eosio</span></div>
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