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基于C++ Coroutines提案 ‘Stackless Resumable Functions’编写的协程库
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  69. <div class="title">generator.h</div>  </div>

  70. </div><!--header-->

  71. <div class="contents">

  72. <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div>

  73. <div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">* Modify from &lt;experimental/generator_t.h&gt;</span></div>

  74. <div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">* Purpose: Library support of coroutines. generator_t class</span></div>

  75. <div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">* http://open-std.org/JTC1/SC22/WG21/docs/papers/2015/p0057r0.pdf</span></div>

  76. <div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">*/</span></div>

  77. <div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="preprocessor">#pragma once</span></div>

  78. <div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160; </div>

  79. <div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="preprocessor">#pragma pack(push,_CRT_PACKING)</span></div>

  80. <div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#pragma push_macro(&quot;new&quot;)</span></div>

  81. <div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#undef new</span></div>

  82. <div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160; </div>

  83. <div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="keyword">namespace </span>resumef</div>

  84. <div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;{</div>

  85. <div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;    <span class="keyword">template</span> &lt;<span class="keyword">typename</span> _Ty, <span class="keyword">typename</span> promise_type&gt;</div>

  86. <div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;    <span class="keyword">struct </span>generator_iterator;</div>

  87. <div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160; </div>

  88. <div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#ifndef DOXYGEN_SKIP_PROPERTY</span></div>

  89. <div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160; </div>

  90. <div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;    <span class="keyword">template</span>&lt;<span class="keyword">typename</span> promise_type&gt;</div>

  91. <div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;    <span class="keyword">struct </span>generator_iterator&lt;void, promise_type&gt;</div>

  92. <div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;    {</div>

  93. <div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;        <span class="keyword">typedef</span> std::input_iterator_tag iterator_category;</div>

  94. <div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;        <span class="keyword">typedef</span> ptrdiff_t difference_type;</div>

  95. <div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160; </div>

  96. <div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;        coroutine_handle&lt;promise_type&gt; _Coro;</div>

  97. <div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160; </div>

  98. <div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;        generator_iterator(std::nullptr_t) : _Coro(nullptr)</div>

  99. <div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;        {</div>

  100. <div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;        }</div>

  101. <div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160; </div>

  102. <div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;        generator_iterator(coroutine_handle&lt;promise_type&gt; _CoroArg) : _Coro(_CoroArg)</div>

  103. <div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;        {</div>

  104. <div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;        }</div>

  105. <div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160; </div>

  106. <div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;        generator_iterator&amp; operator++()</div>

  107. <div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;        {</div>

  108. <div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;            <span class="keywordflow">if</span> (_Coro.done())</div>

  109. <div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;                _Coro = <span class="keyword">nullptr</span>;</div>

  110. <div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;            <span class="keywordflow">else</span></div>

  111. <div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;                _Coro.resume();</div>

  112. <div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;            <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>

  113. <div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;        }</div>

  114. <div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160; </div>

  115. <div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;        <span class="keywordtype">void</span> operator++(<span class="keywordtype">int</span>)</div>

  116. <div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;        {</div>

  117. <div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;            <span class="comment">// This postincrement operator meets the requirements of the Ranges TS</span></div>

  118. <div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;            <span class="comment">// InputIterator concept, but not those of Standard C++ InputIterator.</span></div>

  119. <div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;            ++* <span class="keyword">this</span>;</div>

  120. <div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;        }</div>

  121. <div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160; </div>

  122. <div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;        <span class="keywordtype">bool</span> operator==(generator_iterator <span class="keyword">const</span>&amp; right_)<span class="keyword"> const</span></div>

  123. <div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="keyword">        </span>{</div>

  124. <div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;            <span class="keywordflow">return</span> _Coro == right_._Coro;</div>

  125. <div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;        }</div>

  126. <div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160; </div>

  127. <div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;        <span class="keywordtype">bool</span> operator!=(generator_iterator <span class="keyword">const</span>&amp; right_)<span class="keyword"> const</span></div>

  128. <div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="keyword">        </span>{</div>

  129. <div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;            <span class="keywordflow">return</span> !(*<span class="keyword">this</span> == right_);</div>

  130. <div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;        }</div>

  131. <div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    };</div>

  132. <div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160; </div>

  133. <div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    <span class="keyword">template</span> &lt;<span class="keyword">typename</span> promise_type&gt;</div>

  134. <div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    <span class="keyword">struct </span>generator_iterator&lt;std::nullptr_t, promise_type&gt; : <span class="keyword">public</span> generator_iterator&lt;void, promise_type&gt;</div>

  135. <div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    {</div>

  136. <div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;        generator_iterator(std::nullptr_t) : generator_iterator&lt;void, promise_type&gt;(nullptr)</div>

  137. <div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;        {</div>

  138. <div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;        }</div>

  139. <div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;        generator_iterator(coroutine_handle&lt;promise_type&gt; _CoroArg) : generator_iterator&lt;void, promise_type&gt;(_CoroArg)</div>

  140. <div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;        {</div>

  141. <div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;        }</div>

  142. <div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;    };</div>

  143. <div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160; </div>

  144. <div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    <span class="keyword">template</span> &lt;<span class="keyword">typename</span> _Ty, <span class="keyword">typename</span> promise_type&gt;</div>

  145. <div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    <span class="keyword">struct </span>generator_iterator : <span class="keyword">public</span> generator_iterator&lt;void, promise_type&gt;</div>

  146. <div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    {</div>

  147. <div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;        <span class="keyword">using</span> value_type = _Ty;</div>

  148. <div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;        <span class="keyword">using</span> reference = _Ty <span class="keyword">const</span>&amp;;</div>

  149. <div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        <span class="keyword">using</span> pointer = _Ty <span class="keyword">const</span>*;</div>

  150. <div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160; </div>

  151. <div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;        generator_iterator(std::nullptr_t) : generator_iterator&lt;void, promise_type&gt;(nullptr)</div>

  152. <div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;        {</div>

  153. <div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;        }</div>

  154. <div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;        generator_iterator(coroutine_handle&lt;promise_type&gt; _CoroArg) : generator_iterator&lt;void, promise_type&gt;(_CoroArg)</div>

  155. <div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;        {</div>

  156. <div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;        }</div>

  157. <div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160; </div>

  158. <div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;        reference operator*()<span class="keyword"> const</span></div>

  159. <div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="keyword">        </span>{</div>

  160. <div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;            <span class="keywordflow">return</span> *this-&gt;_Coro.promise()._CurrentValue;</div>

  161. <div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;        }</div>

  162. <div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160; </div>

  163. <div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;        pointer operator-&gt;()<span class="keyword"> const</span></div>

  164. <div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;<span class="keyword">        </span>{</div>

  165. <div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;            <span class="keywordflow">return</span> this-&gt;_Coro.promise()._CurrentValue;</div>

  166. <div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;        }</div>

  167. <div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;    };</div>

  168. <div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="preprocessor">#endif  //DOXYGEN_SKIP_PROPERTY</span></div>

  169. <div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160; </div>

  170. <div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    <span class="keyword">template</span> &lt;<span class="keyword">typename</span> _Ty, <span class="keyword">typename</span> _Alloc&gt;</div>

  171. <div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="structresumef_1_1generator__t.html">  103</a></span>&#160;    <span class="keyword">struct </span><a class="code" href="structresumef_1_1generator__t.html">generator_t</a></div>

  172. <div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;    {</div>

  173. <div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;        <span class="keyword">using</span> value_type = _Ty;</div>

  174. <div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;        <span class="keyword">using</span> <a class="code" href="structresumef_1_1state__generator__t.html">state_type</a> = <a class="code" href="structresumef_1_1state__generator__t.html">state_generator_t</a>;</div>

  175. <div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160; </div>

  176. <div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<span class="preprocessor">#ifndef DOXYGEN_SKIP_PROPERTY</span></div>

  177. <div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;        <span class="keyword">struct </span>promise_type</div>

  178. <div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;        {</div>

  179. <div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;            <span class="keyword">using</span> value_type = _Ty;</div>

  180. <div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;            <span class="keyword">using</span> <a class="code" href="structresumef_1_1state__generator__t.html">state_type</a> = <a class="code" href="structresumef_1_1state__generator__t.html">state_generator_t</a>;</div>

  181. <div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;            <span class="keyword">using</span> future_type = <a class="code" href="structresumef_1_1generator__t.html">generator_t&lt;value_type&gt;</a>;</div>

  182. <div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160; </div>

  183. <div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;            _Ty <span class="keyword">const</span>* _CurrentValue;</div>

  184. <div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160; </div>

  185. <div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;            promise_type()</div>

  186. <div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;            {</div>

  187. <div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;                get_state()-&gt;set_initial_suspend(coroutine_handle&lt;promise_type&gt;::from_promise(*<span class="keyword">this</span>));</div>

  188. <div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;            }</div>

  189. <div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;            promise_type(promise_type&amp;&amp; _Right) noexcept = <span class="keywordflow">default</span>;</div>

  190. <div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;            promise_type&amp; operator = (promise_type&amp;&amp; _Right) noexcept = <span class="keywordflow">default</span>;</div>

  191. <div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;            promise_type(<span class="keyword">const</span> promise_type&amp;) = <span class="keywordflow">default</span>;</div>

  192. <div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;            promise_type&amp; operator = (<span class="keyword">const</span> promise_type&amp;) = <span class="keywordflow">default</span>;</div>

  193. <div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160; </div>

  194. <div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;            <a class="code" href="structresumef_1_1generator__t.html">generator_t</a> get_return_object()</div>

  195. <div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;            {</div>

  196. <div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;                <span class="keywordflow">return</span> <a class="code" href="structresumef_1_1generator__t.html">generator_t</a>{ *<span class="keyword">this</span> };</div>

  197. <div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;            }</div>

  198. <div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160; </div>

  199. <div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;            suspend_always initial_suspend() noexcept</div>

  200. <div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;            {</div>

  201. <div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;                <span class="keywordflow">return</span> {};</div>

  202. <div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;            }</div>

  203. <div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160; </div>

  204. <div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;            suspend_always final_suspend() noexcept</div>

  205. <div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;            {</div>

  206. <div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;                <span class="keywordflow">return</span> {};</div>

  207. <div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;            }</div>

  208. <div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160; </div>

  209. <div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;            suspend_always yield_value(_Ty <span class="keyword">const</span>&amp; _Value) noexcept</div>

  210. <div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;            {</div>

  211. <div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;                _CurrentValue = std::addressof(_Value);</div>

  212. <div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;                <span class="keywordflow">return</span> {};</div>

  213. <div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;            }</div>

  214. <div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160; </div>

  215. <div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;            <span class="comment">//template&lt;class = std::enable_if_t&lt;!std::is_same_v&lt;_Ty, void&gt;, _Ty&gt;&gt;</span></div>

  216. <div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;            <span class="keywordtype">void</span> return_value(_Ty <span class="keyword">const</span>&amp; _Value) noexcept</div>

  217. <div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;            {</div>

  218. <div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;                _CurrentValue = std::addressof(_Value);</div>

  219. <div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;            }</div>

  220. <div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;            <span class="comment">//template&lt;class = std::enable_if_t&lt;std::is_same_v&lt;_Ty, void&gt;, _Ty&gt;&gt;</span></div>

  221. <div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;            <span class="keywordtype">void</span> return_value() noexcept</div>

  222. <div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;            {</div>

  223. <div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;                _CurrentValue = <span class="keyword">nullptr</span>;</div>

  224. <div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;            }</div>

  225. <div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160; </div>

  226. <div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;            <span class="keywordtype">void</span> set_exception(std::exception_ptr e)</div>

  227. <div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;            {</div>

  228. <div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;                (void)e;</div>

  229. <div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;                std::terminate();</div>

  230. <div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;            }</div>

  231. <div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;<span class="preprocessor">#ifdef __clang__</span></div>

  232. <div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;            <span class="keywordtype">void</span> unhandled_exception()</div>

  233. <div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;            {</div>

  234. <div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;                std::terminate();</div>

  235. <div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;            }</div>

  236. <div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;<span class="preprocessor">#endif</span></div>

  237. <div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160; </div>

  238. <div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;            <span class="keyword">template</span> &lt;<span class="keyword">typename</span> _Uty&gt;</div>

  239. <div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;            _Uty&amp;&amp; await_transform(_Uty&amp;&amp; _Whatever) noexcept</div>

  240. <div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;            {</div>

  241. <div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;                static_assert(std::is_same_v&lt;_Uty, void&gt;,</div>

  242. <div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;                    <span class="stringliteral">&quot;co_await is not supported in coroutines of type std::experiemental::generator_t&quot;</span>);</div>

  243. <div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;                <span class="keywordflow">return</span> std::forward&lt;_Uty&gt;(_Whatever);</div>

  244. <div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;            }</div>

  245. <div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160; </div>

  246. <div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;            <a class="code" href="structresumef_1_1state__generator__t.html">state_type</a>* get_state() noexcept</div>

  247. <div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;            {</div>

  248. <div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;<span class="preprocessor">#if RESUMEF_INLINE_STATE</span></div>

  249. <div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;                <span class="keywordtype">size_t</span> _State_size = _Align_size&lt;state_type&gt;();</div>

  250. <div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;<span class="preprocessor">#if defined(__clang__)</span></div>

  251. <div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;                <span class="keyword">auto</span> h = coroutine_handle&lt;promise_type&gt;::from_promise(*<span class="keyword">this</span>);</div>

  252. <div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;                <span class="keywordtype">char</span>* ptr = <span class="keyword">reinterpret_cast&lt;</span><span class="keywordtype">char</span>*<span class="keyword">&gt;</span>(h.address()) - _State_size;</div>

  253. <div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;                <span class="keywordflow">return</span> <span class="keyword">reinterpret_cast&lt;</span><a class="code" href="structresumef_1_1state__generator__t.html">state_type</a>*<span class="keyword">&gt;</span>(ptr);</div>

  254. <div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;<span class="preprocessor">#elif defined(_MSC_VER)</span></div>

  255. <div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;                <span class="keywordtype">char</span>* ptr = <span class="keyword">reinterpret_cast&lt;</span><span class="keywordtype">char</span>*<span class="keyword">&gt;</span>(<span class="keyword">this</span>) - _State_size;</div>

  256. <div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;                <span class="keywordflow">return</span> <span class="keyword">reinterpret_cast&lt;</span><a class="code" href="structresumef_1_1state__generator__t.html">state_type</a>*<span class="keyword">&gt;</span>(ptr);</div>

  257. <div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;<span class="preprocessor">#else</span></div>

  258. <div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;<span class="preprocessor">#error &quot;Unknown compiler&quot;</span></div>

  259. <div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;<span class="preprocessor">#endif</span></div>

  260. <div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;<span class="preprocessor">#else</span></div>

  261. <div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;                <span class="keywordflow">return</span> _state.get();</div>

  262. <div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;<span class="preprocessor">#endif</span></div>

  263. <div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;            }</div>

  264. <div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160; </div>

  265. <div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;            <span class="keyword">using</span> _Alloc_char = <span class="keyword">typename</span> std::allocator_traits&lt;_Alloc&gt;::template rebind_alloc&lt;char&gt;;</div>

  266. <div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;            static_assert(std::is_same_v&lt;<span class="keywordtype">char</span>*, <span class="keyword">typename</span> std::allocator_traits&lt;_Alloc_char&gt;::pointer&gt;,</div>

  267. <div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;                <span class="stringliteral">&quot;generator_t does not support allocators with fancy pointer types&quot;</span>);</div>

  268. <div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;            static_assert(std::allocator_traits&lt;_Alloc_char&gt;::is_always_equal::value,</div>

  269. <div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;                <span class="stringliteral">&quot;generator_t only supports stateless allocators&quot;</span>);</div>

  270. <div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160; </div>

  271. <div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;            <span class="keywordtype">void</span>* <span class="keyword">operator</span> <span class="keyword">new</span>(<span class="keywordtype">size_t</span> _Size)</div>

  272. <div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;            {</div>

  273. <div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;                _Alloc_char _Al;</div>

  274. <div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;<span class="preprocessor">#if RESUMEF_INLINE_STATE</span></div>

  275. <div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;                <span class="keywordtype">size_t</span> _State_size = _Align_size&lt;state_type&gt;();</div>

  276. <div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;                assert(_Size &gt;= <span class="keyword">sizeof</span>(uint32_t) &amp;&amp; _Size &lt; (std::numeric_limits&lt;uint32_t&gt;::max)() - <span class="keyword">sizeof</span>(_State_size));</div>

  277. <div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160; </div>

  278. <div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;                <span class="keywordtype">char</span>* ptr = _Al.allocate(_Size + _State_size);</div>

  279. <div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;                <span class="keywordtype">char</span>* _Rptr = ptr + _State_size;</div>

  280. <div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;<span class="preprocessor">#if RESUMEF_DEBUG_COUNTER</span></div>

  281. <div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;                std::cout &lt;&lt; <span class="stringliteral">&quot;  generator_promise::new, alloc size=&quot;</span> &lt;&lt; (_Size + _State_size) &lt;&lt; std::endl;</div>

  282. <div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;                std::cout &lt;&lt; <span class="stringliteral">&quot;  generator_promise::new, alloc ptr=&quot;</span> &lt;&lt; (<span class="keywordtype">void</span>*)ptr &lt;&lt; std::endl;</div>

  283. <div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;                std::cout &lt;&lt; <span class="stringliteral">&quot;  generator_promise::new, return ptr=&quot;</span> &lt;&lt; (<span class="keywordtype">void</span>*)_Rptr &lt;&lt; std::endl;</div>

  284. <div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;<span class="preprocessor">#endif</span></div>

  285. <div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160; </div>

  286. <div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;                <span class="comment">//在初始地址上构造state</span></div>

  287. <div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;                {</div>

  288. <div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;                    <a class="code" href="structresumef_1_1state__generator__t.html">state_type</a>* st = state_type::_Construct(ptr);</div>

  289. <div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;                    st-&gt;lock();</div>

  290. <div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;                }</div>

  291. <div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160; </div>

  292. <div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;                <span class="keywordflow">return</span> _Rptr;</div>

  293. <div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;<span class="preprocessor">#else</span></div>

  294. <div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;                <span class="keywordtype">char</span>* ptr = _Al.allocate(_Size);</div>

  295. <div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;<span class="preprocessor">#if RESUMEF_DEBUG_COUNTER</span></div>

  296. <div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;                std::cout &lt;&lt; <span class="stringliteral">&quot;  generator_promise::new, alloc size=&quot;</span> &lt;&lt; _Size &lt;&lt; std::endl;</div>

  297. <div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;                std::cout &lt;&lt; <span class="stringliteral">&quot;  generator_promise::new, alloc ptr=&quot;</span> &lt;&lt; (<span class="keywordtype">void</span>*)ptr &lt;&lt; std::endl;</div>

  298. <div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;                std::cout &lt;&lt; <span class="stringliteral">&quot;  generator_promise::new, return ptr=&quot;</span> &lt;&lt; (<span class="keywordtype">void</span>*)ptr &lt;&lt; std::endl;</div>

  299. <div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;<span class="preprocessor">#endif</span></div>

  300. <div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160; </div>

  301. <div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;                <span class="keywordflow">return</span> ptr;</div>

  302. <div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;<span class="preprocessor">#endif</span></div>

  303. <div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;            }</div>

  304. <div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160; </div>

  305. <div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;            <span class="keywordtype">void</span> <span class="keyword">operator</span> <span class="keyword">delete</span>(<span class="keywordtype">void</span>* _Ptr, <span class="keywordtype">size_t</span> _Size)</div>

  306. <div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;            {</div>

  307. <div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;<span class="preprocessor">#if RESUMEF_INLINE_STATE</span></div>

  308. <div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;                <span class="keywordtype">size_t</span> _State_size = _Align_size&lt;state_type&gt;();</div>

  309. <div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;                assert(_Size &gt;= <span class="keyword">sizeof</span>(uint32_t) &amp;&amp; _Size &lt; (std::numeric_limits&lt;uint32_t&gt;::max)() - <span class="keyword">sizeof</span>(_State_size));</div>

  310. <div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160; </div>

  311. <div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;                *<span class="keyword">reinterpret_cast&lt;</span>uint32_t*<span class="keyword">&gt;</span>(_Ptr) = <span class="keyword">static_cast&lt;</span>uint32_t<span class="keyword">&gt;</span>(_Size + _State_size);</div>

  312. <div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160; </div>

  313. <div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;                <a class="code" href="structresumef_1_1state__generator__t.html">state_type</a>* st = <span class="keyword">reinterpret_cast&lt;</span><a class="code" href="structresumef_1_1state__generator__t.html">state_type</a>*<span class="keyword">&gt;</span>(<span class="keyword">static_cast&lt;</span><span class="keywordtype">char</span>*<span class="keyword">&gt;</span>(_Ptr) - _State_size);</div>

  314. <div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;                st-&gt;unlock();</div>

  315. <div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;<span class="preprocessor">#else</span></div>

  316. <div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;                _Alloc_char _Al;</div>

  317. <div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;                <span class="keywordflow">return</span> _Al.deallocate(<span class="keyword">reinterpret_cast&lt;</span><span class="keywordtype">char</span> *<span class="keyword">&gt;</span>(_Ptr), _Size);</div>

  318. <div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;<span class="preprocessor">#endif</span></div>

  319. <div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;            }</div>

  320. <div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;<span class="preprocessor">#if !RESUMEF_INLINE_STATE</span></div>

  321. <div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;        <span class="keyword">private</span>:</div>

  322. <div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;            <a class="code" href="structresumef_1_1counted__ptr.html">counted_ptr&lt;state_type&gt;</a> _state = state_generator_t::_Alloc_state();</div>

  323. <div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;<span class="preprocessor">#endif</span></div>

  324. <div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;        };</div>

  325. <div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;<span class="preprocessor">#endif  //DOXYGEN_SKIP_PROPERTY</span></div>

  326. <div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160; </div>

  327. <div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;        <span class="keyword">using</span> iterator = generator_iterator&lt;_Ty, promise_type&gt;;</div>

  328. <div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160; </div>

  329. <div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;        iterator begin()</div>

  330. <div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;        {</div>

  331. <div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;            <span class="keywordflow">if</span> (_Coro)</div>

  332. <div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;            {</div>

  333. <div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;                _Coro.resume();</div>

  334. <div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;                <span class="keywordflow">if</span> (_Coro.done())</div>

  335. <div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;                    <span class="keywordflow">return</span>{ <span class="keyword">nullptr</span> };</div>

  336. <div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;            }</div>

  337. <div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;            <span class="keywordflow">return</span> { _Coro };</div>

  338. <div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;        }</div>

  339. <div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160; </div>

  340. <div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;        iterator end()</div>

  341. <div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;        {</div>

  342. <div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;            <span class="keywordflow">return</span>{ <span class="keyword">nullptr</span> };</div>

  343. <div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;        }</div>

  344. <div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160; </div>

  345. <div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;        <span class="keyword">explicit</span> <a class="code" href="structresumef_1_1generator__t.html">generator_t</a>(promise_type&amp; _Prom)</div>

  346. <div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;            : _Coro(coroutine_handle&lt;promise_type&gt;::from_promise(_Prom))</div>

  347. <div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;        {</div>

  348. <div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;        }</div>

  349. <div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160; </div>

  350. <div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;        <a class="code" href="structresumef_1_1generator__t.html">generator_t</a>() = <span class="keywordflow">default</span>;</div>

  351. <div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160; </div>

  352. <div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;        <a class="code" href="structresumef_1_1generator__t.html">generator_t</a>(<a class="code" href="structresumef_1_1generator__t.html">generator_t</a> <span class="keyword">const</span>&amp;) = <span class="keyword">delete</span>;</div>

  353. <div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;        <a class="code" href="structresumef_1_1generator__t.html">generator_t</a>&amp; operator=(<a class="code" href="structresumef_1_1generator__t.html">generator_t</a> <span class="keyword">const</span>&amp;) = <span class="keyword">delete</span>;</div>

  354. <div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160; </div>

  355. <div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;        <a class="code" href="structresumef_1_1generator__t.html">generator_t</a>(<a class="code" href="structresumef_1_1generator__t.html">generator_t</a>&amp;&amp; right_) noexcept</div>

  356. <div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;            : _Coro(right_._Coro)</div>

  357. <div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;        {</div>

  358. <div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;            right_._Coro = <span class="keyword">nullptr</span>;</div>

  359. <div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;        }</div>

  360. <div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160; </div>

  361. <div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;        <a class="code" href="structresumef_1_1generator__t.html">generator_t</a>&amp; operator=(<a class="code" href="structresumef_1_1generator__t.html">generator_t</a>&amp;&amp; right_) noexcept</div>

  362. <div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;        {</div>

  363. <div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;            <span class="keywordflow">if</span> (<span class="keyword">this</span> != std::addressof(right_)) {</div>

  364. <div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;                _Coro = right_._Coro;</div>

  365. <div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;                right_._Coro = <span class="keyword">nullptr</span>;</div>

  366. <div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;            }</div>

  367. <div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;            <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>

  368. <div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;        }</div>

  369. <div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160; </div>

  370. <div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;        ~<a class="code" href="structresumef_1_1generator__t.html">generator_t</a>()</div>

  371. <div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;        {</div>

  372. <div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;            <span class="keywordflow">if</span> (_Coro) {</div>

  373. <div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;                _Coro.destroy();</div>

  374. <div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;            }</div>

  375. <div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;        }</div>

  376. <div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160; </div>

  377. <div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;        <a class="code" href="structresumef_1_1state__generator__t.html">state_type</a>* detach_state()</div>

  378. <div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;        {</div>

  379. <div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;            <span class="keyword">auto</span> t = _Coro;</div>

  380. <div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;            _Coro = <span class="keyword">nullptr</span>;</div>

  381. <div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;            <span class="keywordflow">return</span> t.promise().get_state();</div>

  382. <div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;        }</div>

  383. <div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160; </div>

  384. <div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;    <span class="keyword">private</span>:</div>

  385. <div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;        coroutine_handle&lt;promise_type&gt; _Coro = <span class="keyword">nullptr</span>;</div>

  386. <div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;    };</div>

  387. <div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160; </div>

  388. <div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;} <span class="comment">// namespace resumef</span></div>

  389. <div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160; </div>

  390. <div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;<span class="preprocessor">#pragma pop_macro(&quot;new&quot;)</span></div>

  391. <div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;<span class="preprocessor">#pragma pack(pop)</span></div>

  392. <div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160; </div>

  393. <div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;<span class="preprocessor">#ifndef DOXYGEN_SKIP_PROPERTY</span></div>

  394. <div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160; </div>

  395. <div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;<span class="keyword">namespace </span>std {</div>

  396. <div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;    <span class="keyword">namespace </span>experimental {</div>

  397. <div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;        </div>

  398. <div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;        <span class="keyword">template</span> &lt;<span class="keyword">typename</span> _Ty, <span class="keyword">typename</span> _Alloc, <span class="keyword">typename</span>... Args&gt;</div>

  399. <div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;        <span class="keyword">struct </span>coroutine_traits&lt;resumef::generator_t&lt;_Ty, _Alloc&gt;, Args...&gt;</div>

  400. <div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;        {</div>

  401. <div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;            <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="structresumef_1_1generator__t.html">resumef::generator_t&lt;_Ty, _Alloc&gt;::promise_type</a> promise_type;</div>

  402. <div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;        };</div>

  403. <div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;    }</div>

  404. <div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;} <span class="comment">// namespace std::experimental</span></div>

  405. <div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160; </div>

  406. <div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;<span class="preprocessor">#endif  //DOXYGEN_SKIP_PROPERTY</span></div>

  407. </div><!-- fragment --></div><!-- contents -->

  408. <div class="ttc" id="astructresumef_1_1counted__ptr_html"><div class="ttname"><a href="structresumef_1_1counted__ptr.html">resumef::counted_ptr&lt; state_type &gt;</a></div></div>

  409. <div class="ttc" id="astructresumef_1_1state__generator__t_html"><div class="ttname"><a href="structresumef_1_1state__generator__t.html">resumef::state_generator_t</a></div><div class="ttdoc">专用于generator_t&lt;&gt;的state类。</div><div class="ttdef"><b>Definition:</b> state.h:70</div></div>

  410. <div class="ttc" id="astructresumef_1_1generator__t_html"><div class="ttname"><a href="structresumef_1_1generator__t.html">resumef::generator_t</a></div><div class="ttdoc">专用于co_yield函数。</div><div class="ttdef"><b>Definition:</b> generator.h:103</div></div>

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  415. </a> 1.8.17

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