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| <div class="headertitle"><div class="title">conditional_forward.hpp</div></div> |
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| <div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div> |
| <div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one</span></div> |
| <div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> * or more contributor license agreements. See the NOTICE file</span></div> |
| <div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> * distributed with this work for additional information</span></div> |
| <div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> * regarding copyright ownership. The ASF licenses this file</span></div> |
| <div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> * to you under the Apache License, Version 2.0 (the</span></div> |
| <div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> * "License"); you may not use this file except in compliance</span></div> |
| <div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> * with the License. You may obtain a copy of the License at</span></div> |
| <div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"> *</span></div> |
| <div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div> |
| <div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> *</span></div> |
| <div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment"> * Unless required by applicable law or agreed to in writing,</span></div> |
| <div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment"> * software distributed under the License is distributed on an</span></div> |
| <div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div> |
| <div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment"> * KIND, either express or implied. See the License for the</span></div> |
| <div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"> * specific language governing permissions and limitations</span></div> |
| <div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment"> * under the License.</span></div> |
| <div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment"> */</span></div> |
| <div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div> |
| <div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#ifndef CONDITIONAL_FORWARD_HPP_</span></div> |
| <div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#define CONDITIONAL_FORWARD_HPP_</span></div> |
| <div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> </div> |
| <div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include <type_traits></span></div> |
| <div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> </div> |
| <div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespacedatasketches.html">datasketches</a> {</div> |
| <div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> </div> |
| <div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="comment">// Forward type T2 as rvalue reference if type T1 is rvalue reference</span></div> |
| <div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> </div> |
| <div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="keyword">template</span><<span class="keyword">typename</span> T1, <span class="keyword">typename</span> T2></div> |
| <div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="keyword">using </span>fwd_type = <span class="keyword">typename</span> std::conditional<std::is_lvalue_reference<T1>::value,</div> |
| <div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> T2, <span class="keyword">typename</span> std::remove_reference<T2>::type&&>::type;</div> |
| <div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> </div> |
| <div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="keyword">template</span><<span class="keyword">typename</span> T1, <span class="keyword">typename</span> T2></div> |
| <div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span>fwd_type<T1, T2> conditional_forward(T2&& value) {</div> |
| <div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> <span class="keywordflow">return</span> std::forward<fwd_type<T1, T2>>(std::forward<T2>(value));</div> |
| <div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span>}</div> |
| <div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> </div> |
| <div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="comment">// Forward container as iterators</span></div> |
| <div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> </div> |
| <div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="keyword">template</span><<span class="keyword">typename</span> Container></div> |
| <div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="keyword">auto</span> forward_begin(Container&& c) -> <span class="keyword">typename</span> std::enable_if<</div> |
| <div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> std::is_lvalue_reference<Container>::value ||</div> |
| <div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> std::is_same<typename std::remove_reference<Container>::type::const_iterator, <span class="keyword">decltype</span>(c.begin())>::value,</div> |
| <div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">decltype</span>(c.begin())</div> |
| <div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span>>::type</div> |
| <div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span>{</div> |
| <div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="keywordflow">return</span> c.begin();</div> |
| <div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span>}</div> |
| <div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> </div> |
| <div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span><span class="keyword">template</span><<span class="keyword">typename</span> Container></div> |
| <div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="keyword">auto</span> forward_begin(Container&& c) -> <span class="keyword">typename</span> std::enable_if<</div> |
| <div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> !std::is_lvalue_reference<Container>::value &&</div> |
| <div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> !std::is_same<typename std::remove_reference<Container>::type::const_iterator, <span class="keyword">decltype</span>(c.begin())>::value,</div> |
| <div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <span class="keyword">decltype</span>(std::make_move_iterator(c.begin()))</div> |
| <div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span>>::type</div> |
| <div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span>{</div> |
| <div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <span class="keywordflow">return</span> std::make_move_iterator(c.begin());</div> |
| <div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span>}</div> |
| <div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> </div> |
| <div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span><span class="keyword">template</span><<span class="keyword">typename</span> Container></div> |
| <div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span><span class="keyword">auto</span> forward_end(Container&& c) -> <span class="keyword">typename</span> std::enable_if<</div> |
| <div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> std::is_lvalue_reference<Container>::value ||</div> |
| <div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> std::is_same<typename std::remove_reference<Container>::type::const_iterator, <span class="keyword">decltype</span>(c.begin())>::value,</div> |
| <div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="keyword">decltype</span>(c.end())</div> |
| <div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span>>::type</div> |
| <div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span>{</div> |
| <div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="keywordflow">return</span> c.end();</div> |
| <div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span>}</div> |
| <div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> </div> |
| <div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span><span class="keyword">template</span><<span class="keyword">typename</span> Container></div> |
| <div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span><span class="keyword">auto</span> forward_end(Container&& c) -> <span class="keyword">typename</span> std::enable_if<</div> |
| <div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> !std::is_lvalue_reference<Container>::value &&</div> |
| <div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> !std::is_same<typename std::remove_reference<Container>::type::const_iterator, <span class="keyword">decltype</span>(c.begin())>::value,</div> |
| <div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="keyword">decltype</span>(std::make_move_iterator(c.end()))</div> |
| <div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span>>::type</div> |
| <div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span>{</div> |
| <div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <span class="keywordflow">return</span> std::make_move_iterator(c.end());</div> |
| <div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span>}</div> |
| <div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> </div> |
| <div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span>} <span class="comment">/* namespace datasketches */</span></div> |
| <div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> </div> |
| <div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span><span class="preprocessor">#endif</span></div> |
| <div class="ttc" id="anamespacedatasketches_html"><div class="ttname"><a href="namespacedatasketches.html">datasketches</a></div><div class="ttdoc">DataSketches namespace.</div><div class="ttdef"><b>Definition</b> binomial_bounds.hpp:38</div></div> |
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