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| <li class="navelem"><a class="el" href="dir_8cab8f464681f7cc51cee77e79a434cd.html">3rdparty</a></li><li class="navelem"><a class="el" href="dir_82e31a22178767beedddc7597fd1ecb6.html">dmlc-core</a></li><li class="navelem"><a class="el" href="dir_7dd5b88db83ff474628c03c453739a90.html">include</a></li><li class="navelem"><a class="el" href="dir_e30967e3ab51f65ad4b50dd298ccf4e7.html">dmlc</a></li> </ul> |
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| <a href="any_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> </div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#ifndef DMLC_ANY_H_</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#define DMLC_ANY_H_</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// This code need c++11 to compile</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <typeinfo></span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <type_traits></span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <utility></span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <algorithm></span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <cstring></span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "<a class="code" href="3rdparty_2dmlc-core_2include_2dmlc_2base_8h.html">./base.h</a>"</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include "./logging.h"</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">namespace </span><a class="code" href="namespacedmlc.html">dmlc</a> {</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// forward declare any;</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">class </span>any;</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">inline</span> T& <span class="keyword">get</span>(any& src); <span class="comment">// NOLINT(*)</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="keyword">inline</span> <span class="keyword">const</span> T& <span class="keyword">get</span>(<span class="keyword">const</span> any& src);</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="keyword">inline</span> <span class="keyword">const</span> T& unsafe_get(<span class="keyword">const</span> any& src);</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="keyword">inline</span> T& unsafe_get(any& src); <span class="comment">// NOLINT(*)</span></div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="keyword">class </span>any {</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keyword">inline</span> any() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">inline</span> any(any&& other); <span class="comment">// NOLINT(*)</span></div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"></span> <span class="keyword">inline</span> any(<span class="keyword">const</span> any& other); <span class="comment">// NOLINT(*)</span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">inline</span> any(T&& other); <span class="comment">// NOLINT(*)</span></div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment"></span> <span class="keyword">inline</span> ~any();</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keyword">inline</span> any& operator=(any&& other);</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keyword">inline</span> any& operator=(<span class="keyword">const</span> any& other);</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keyword">inline</span> any& operator=(T&& other);</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keyword">inline</span> <span class="keywordtype">bool</span> empty() <span class="keyword">const</span>;</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> clear();</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> swap(any& other); <span class="comment">// NOLINT(*)</span></div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="comment"></span> <span class="keyword">inline</span> <span class="keyword">const</span> std::type_info& type() <span class="keyword">const</span>;</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span>... Args></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> construct(Args&&... args);</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="comment">// declare of helper class</span></div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keyword">class </span>TypeOnHeap;</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keyword">class </span>TypeOnStack;</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keyword">class </span>TypeInfo;</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="comment">// size of stack space, it takes 32 bytes for one any type.</span></div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> kStack = <span class="keyword">sizeof</span>(<span class="keywordtype">void</span>*) * 3;</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> kAlign = <span class="keyword">sizeof</span>(<span class="keywordtype">void</span>*);</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="comment">// container use dynamic storage only when space runs lager</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keyword">union </span>Data {</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="comment">// stack space</span></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  std::aligned_storage<kStack, kAlign>::type stack;</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="comment">// pointer to heap space</span></div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordtype">void</span>* pheap;</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  };</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="comment">// type specific information</span></div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keyword">struct </span>Type {</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="comment">// destructor function</span></div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  void (*destroy)(Data* data);</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="comment">// copy constructor</span></div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  void (*create_from_data)(Data* dst, <span class="keyword">const</span> Data& src);</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="comment">// the type info function</span></div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keyword">const</span> std::type_info* ptype_info;</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  };</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="comment">// constant to check if data can be stored on heap.</span></div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keyword">struct </span>data_on_stack {</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> value = <span class="keyword">alignof</span>(T) <= kAlign && <span class="keyword">sizeof</span>(T) <= kStack;</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  };</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="comment">// declare friend with</span></div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keyword">friend</span> T& <span class="keyword">get</span>(any& src); <span class="comment">// NOLINT(*)</span></div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keyword">friend</span> <span class="keyword">const</span> T& <span class="keyword">get</span>(<span class="keyword">const</span> any& src);</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keyword">friend</span> T& unsafe_get(any& src); <span class="comment">// NOLINT(*)</span></div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keyword">friend</span> <span class="keyword">const</span> T& unsafe_get(<span class="keyword">const</span> any& src);</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="comment">// internal construct function</span></div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> construct(any&& other);</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="comment">// internal construct function</span></div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> construct(<span class="keyword">const</span> any& other);</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="comment">// internal function to check if type is correct.</span></div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> check_type() <span class="keyword">const</span>;</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> check_type_by_name() <span class="keyword">const</span>;</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="comment">// internal type specific information</span></div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keyword">const</span> Type* type_{<span class="keyword">nullptr</span>};</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="comment">// internal data</span></div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  Data data_;</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span> };</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span> </div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="keyword">inline</span> any::any(T&& other) {</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> std::decay<T>::type DT;</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keywordflow">if</span> (std::is_same<DT, any>::value) {</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  this->construct(std::forward<T>(other));</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  static_assert(std::is_copy_constructible<DT>::value,</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="stringliteral">"Any can only hold value that is copy constructable"</span>);</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  type_ = TypeInfo<DT>::get_type();</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">if</span> (data_on_stack<DT>::value) {</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="preprocessor">#pragma GCC diagnostic push</span></div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span> <span class="preprocessor">#if 6 <= __GNUC__</span></div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span> <span class="preprocessor">#pragma GCC diagnostic ignored "-Wplacement-new"</span></div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keyword">new</span> (&(data_.stack)) DT(std::forward<T>(other));</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span> <span class="preprocessor">#pragma GCC diagnostic pop</span></div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  data_.pheap = <span class="keyword">new</span> DT(std::forward<T>(other));</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  }</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  }</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span> }</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span> </div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="keyword">inline</span> any::any(any&& other) {</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  this->construct(std::move(other));</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span> }</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span> </div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="keyword">inline</span> any::any(<span class="keyword">const</span> any& other) {</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  this->construct(other);</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span> }</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span> </div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> any::construct(any&& other) {</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  type_ = other.type_;</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  data_ = other.data_;</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  other.type_ = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span> }</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span> </div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> any::construct(<span class="keyword">const</span> any& other) {</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  type_ = other.type_;</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordflow">if</span> (type_ != <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  type_->create_from_data(&data_, other.data_);</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  }</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span> }</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span>... Args></div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> any::construct(Args&&... args) {</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  clear();</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> std::decay<T>::type DT;</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  type_ = TypeInfo<DT>::get_type();</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="keywordflow">if</span> (data_on_stack<DT>::value) {</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="preprocessor">#pragma GCC diagnostic push</span></div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="preprocessor">#if 6 <= __GNUC__</span></div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="preprocessor">#pragma GCC diagnostic ignored "-Wplacement-new"</span></div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="keyword">new</span> (&(data_.stack)) DT(std::forward<Args>(args)...);</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span> <span class="preprocessor">#pragma GCC diagnostic pop</span></div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  data_.pheap = <span class="keyword">new</span> DT(std::forward<Args>(args)...);</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  }</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span> }</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span> </div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="keyword">inline</span> any::~any() {</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  this->clear();</div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span> }</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span> </div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span> <span class="keyword">inline</span> any& any::operator=(any&& other) {</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  any(std::move(other)).swap(*<span class="keyword">this</span>);</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span> }</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span> </div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="keyword">inline</span> any& any::operator=(<span class="keyword">const</span> any& other) {</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  any(other).swap(*<span class="keyword">this</span>);</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span> }</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span> </div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="keyword">inline</span> any& any::operator=(T&& other) {</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  any(std::forward<T>(other)).swap(*<span class="keyword">this</span>);</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span> }</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span> </div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> any::swap(any& other) { <span class="comment">// NOLINT(*)</span></div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  std::swap(type_, other.type_);</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  std::swap(data_, other.data_);</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span> }</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span> </div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> any::clear() {</div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keywordflow">if</span> (type_ != <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keywordflow">if</span> (type_->destroy != <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  type_->destroy(&data_);</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  }</div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  type_ = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  }</div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span> }</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span> </div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> any::empty()<span class="keyword"> const </span>{</div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="keywordflow">return</span> type_ == <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span> }</div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span> </div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span> <span class="keyword">inline</span> <span class="keyword">const</span> std::type_info& any::type()<span class="keyword"> const </span>{</div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keywordflow">if</span> (type_ != <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="keywordflow">return</span> *(type_->ptype_info);</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="keywordflow">return</span> <span class="keyword">typeid</span>(void);</div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  }</div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span> }</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span> </div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> any::check_type()<span class="keyword"> const </span>{</div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  CHECK(type_ != <span class="keyword">nullptr</span>)</div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  << <span class="stringliteral">"The any container is empty"</span></div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  << <span class="stringliteral">" requested="</span> << <span class="keyword">typeid</span>(T).name();</div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  CHECK(*(type_->ptype_info) == <span class="keyword">typeid</span>(T))</div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  << <span class="stringliteral">"The stored type mismatch"</span></div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  << <span class="stringliteral">" stored="</span> << type_->ptype_info->name()</div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  << <span class="stringliteral">" requested="</span> << <span class="keyword">typeid</span>(T).name();</div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span> }</div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span> </div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> any::check_type_by_name()<span class="keyword"> const </span>{</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  CHECK(type_ != <span class="keyword">nullptr</span>)</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  << <span class="stringliteral">"The any container is empty"</span></div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  << <span class="stringliteral">" requested="</span> << <span class="keyword">typeid</span>(T).name();</div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  CHECK(strcmp(type_->ptype_info->name(), <span class="keyword">typeid</span>(T).name()) == 0)</div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  << <span class="stringliteral">"The stored type name mismatch"</span></div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  << <span class="stringliteral">" stored="</span> << type_->ptype_info->name()</div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  << <span class="stringliteral">" requested="</span> << <span class="keyword">typeid</span>(T).name();</div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span> }</div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span> </div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span> <span class="keyword">inline</span> <span class="keyword">const</span> T& <span class="keyword">get</span>(<span class="keyword">const</span> any& src) {</div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  src.check_type<T>();</div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <span class="keywordflow">return</span> *any::TypeInfo<T>::get_ptr(&(src.data_));</div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span> }</div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span> </div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span> <span class="keyword">inline</span> T& <span class="keyword">get</span>(any& src) { <span class="comment">// NOLINT(*)</span></div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  src.check_type<T>();</div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="keywordflow">return</span> *any::TypeInfo<T>::get_ptr(&(src.data_));</div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span> }</div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span> </div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span> <span class="keyword">inline</span> <span class="keyword">const</span> T& unsafe_get(<span class="keyword">const</span> any& src) {</div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  src.check_type_by_name<T>();</div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="keywordflow">return</span> *any::TypeInfo<T>::get_ptr(&(src.data_));</div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span> }</div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span> </div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span> <span class="keyword">inline</span> T& unsafe_get(any& src) { <span class="comment">// NOLINT(*)</span></div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  src.check_type_by_name<T>();</div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="keywordflow">return</span> *any::TypeInfo<T>::get_ptr(&(src.data_));</div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span> }</div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span> </div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span> <span class="keyword">class </span>any::TypeOnHeap {</div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="keyword">inline</span> <span class="keyword">static</span> T* get_ptr(any::Data* data) {</div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>T*<span class="keyword">></span>(data->pheap);</div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  }</div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="keyword">inline</span> <span class="keyword">static</span> <span class="keyword">const</span> T* get_ptr(<span class="keyword">const</span> any::Data* data) {</div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><span class="keyword">const </span>T*<span class="keyword">></span>(data->pheap);</div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  }</div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <span class="keyword">inline</span> <span class="keyword">static</span> <span class="keywordtype">void</span> create_from_data(any::Data* dst, <span class="keyword">const</span> any::Data& data) {</div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  dst->pheap = <span class="keyword">new</span> T(*get_ptr(&data));</div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  }</div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="keyword">inline</span> <span class="keyword">static</span> <span class="keywordtype">void</span> destroy(Data* data) {</div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="keyword">delete</span> <span class="keyword">static_cast<</span>T*<span class="keyword">></span>(data->pheap);</div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  }</div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span> };</div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span> </div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span> <span class="keyword">class </span>any::TypeOnStack {</div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="keyword">inline</span> <span class="keyword">static</span> T* get_ptr(any::Data* data) {</div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keywordflow">return</span> <span class="keyword">reinterpret_cast<</span>T*<span class="keyword">></span>(&(data->stack));</div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  }</div><div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="keyword">inline</span> <span class="keyword">static</span> <span class="keyword">const</span> T* get_ptr(<span class="keyword">const</span> any::Data* data) {</div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="keywordflow">return</span> <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span>T*<span class="keyword">></span>(&(data->stack));</div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  }</div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="keyword">inline</span> <span class="keyword">static</span> <span class="keywordtype">void</span> create_from_data(any::Data* dst, <span class="keyword">const</span> any::Data& data) {</div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="keyword">new</span> (&(dst->stack)) T(*get_ptr(&data));</div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  }</div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  <span class="keyword">inline</span> <span class="keyword">static</span> <span class="keywordtype">void</span> destroy(Data* data) {</div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  T* dptr = <span class="keyword">reinterpret_cast<</span>T*<span class="keyword">></span>(&(data->stack));</div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  dptr->~T();</div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  }</div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span> };</div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span> </div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span> <span class="keyword">class </span>any::TypeInfo</div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  : <span class="keyword">public</span> std::conditional<any::data_on_stack<T>::value,</div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  any::TypeOnStack<T>,</div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  any::TypeOnHeap<T> >::type {</div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <span class="keyword">inline</span> <span class="keyword">static</span> <span class="keyword">const</span> Type* get_type() {</div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  <span class="keyword">static</span> TypeInfo<T> tp;</div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <span class="keywordflow">return</span> &(tp.type_);</div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  }</div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span> </div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <span class="comment">// local type</span></div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  Type type_;</div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <span class="comment">// constructor</span></div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  TypeInfo() {</div><div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="keywordflow">if</span> (std::is_pod<T>::value && data_on_stack<T>::value) {</div><div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  type_.destroy = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  type_.destroy = TypeInfo<T>::destroy;</div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  }</div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  type_.create_from_data = TypeInfo<T>::create_from_data;</div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  type_.ptype_info = &<span class="keyword">typeid</span>(T);</div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  }</div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span> };</div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span> </div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span> } <span class="comment">// namespace dmlc</span></div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span> </div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span> <span class="preprocessor">#endif // DMLC_ANY_H_</span></div><div class="ttc" id="namespacedmlc_html"><div class="ttname"><a href="namespacedmlc.html">dmlc</a></div><div class="ttdoc">namespace for dmlc </div><div class="ttdef"><b>Definition:</b> array_view.h:12</div></div> |
| <div class="ttc" id="3rdparty_2dmlc-core_2include_2dmlc_2base_8h_html"><div class="ttname"><a href="3rdparty_2dmlc-core_2include_2dmlc_2base_8h.html">base.h</a></div></div> |
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