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<a href="TypeTraits_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> <span class="comment">/*---------------------------------------------------------------------\</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">| ____ _ __ __ ___ |</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">| |__ / \ / / . \ . \ |</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">| / / \ V /| _/ _/ |</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">| / /__ | | | | | | |</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">| /_____||_| |_| |_| |</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">| |</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">\---------------------------------------------------------------------*/</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#ifndef ZYPP_TYPETRAITS_H</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#define ZYPP_TYPETRAITS_H</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <type_traits></span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">namespace </span><a class="code" href="namespacezypp.html">zypp</a></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> {</div><div class="line"><a name="l00020"></a><span class="lineno"><a class="line" href="namespacezypp_1_1__detail.html"> 20</a></span>  <span class="keyword">namespace </span>_detail</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  {</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Tp></div><div class="line"><a name="l00023"></a><span class="lineno"><a class="line" href="structzypp_1_1__detail_1_1__has__type__const__iterator.html"> 23</a></span>  <span class="keyword">struct </span><a class="code" href="structzypp_1_1__detail_1_1__has__type__const__iterator.html">_has_type_const_iterator</a></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  {</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keyword">template</span><<span class="keyword">typename</span> C> <span class="keyword">static</span> std::true_type <a class="code" href="structzypp_1_1__detail_1_1__has__type__const__iterator.html#a2178737839affdb316839954f0761ac4">test</a>( <span class="keyword">typename</span> C::const_iterator * );</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keyword">template</span><<span class="keyword">typename</span> C> <span class="keyword">static</span> std::false_type <a class="code" href="structzypp_1_1__detail_1_1__has__type__const__iterator.html#a2178737839affdb316839954f0761ac4">test</a>(...);</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="structzypp_1_1__detail_1_1__has__type__const__iterator.html#a53e62f90646cb6e70362d94638784aa3"> 29</a></span>  <span class="keyword">static</span> constexpr <span class="keywordtype">bool</span> <a class="code" href="structzypp_1_1__detail_1_1__has__type__const__iterator.html#a53e62f90646cb6e70362d94638784aa3">value</a> = decltype(test<Tp>(<span class="keyword">nullptr</span>))::<a class="code" href="structzypp_1_1__detail_1_1__has__type__const__iterator.html#a53e62f90646cb6e70362d94638784aa3">value</a>;</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  };</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Tp></div><div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="structzypp_1_1__detail_1_1__has__container__begin__end.html"> 33</a></span>  <span class="keyword">struct </span><a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html">_has_container_begin_end</a></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  {</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> C></div><div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a40993bb55405384771dc7d3860ce2d76"> 37</a></span>  <span class="keyword">using</span> <a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a40993bb55405384771dc7d3860ce2d76">Signature</a> = <span class="keyword">typename</span> C::const_iterator(C::*)() <span class="keyword">const</span>;</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keyword">template</span><<span class="keyword">typename</span> C> <span class="keyword">static</span> std::true_type <a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a89363c1eaf3b6a2df27f471caa8b7f52">testBeg</a>( <span class="keyword">typename</span> std::enable_if<std::is_same<decltype(<span class="keyword">static_cast<</span><a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a40993bb55405384771dc7d3860ce2d76">Signature<C></a><span class="keyword">></span>(&C::begin)), <a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a40993bb55405384771dc7d3860ce2d76">Signature<C></a>>::<a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a70f91e3ffdc9f07f39fd8726fca58a67">value</a>, <span class="keywordtype">void</span>>::type* );</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keyword">template</span><<span class="keyword">typename</span> C> <span class="keyword">static</span> std::false_type <a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a89363c1eaf3b6a2df27f471caa8b7f52">testBeg</a>(...);</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keyword">template</span><<span class="keyword">typename</span> C> <span class="keyword">static</span> std::true_type <a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a0113cae55143dc0ba58bf55c57d6638e">testEnd</a>( <span class="keyword">typename</span> std::enable_if<std::is_same<decltype(<span class="keyword">static_cast<</span><a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a40993bb55405384771dc7d3860ce2d76">Signature<C></a><span class="keyword">></span>(&C::end)), <a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a40993bb55405384771dc7d3860ce2d76">Signature<C></a>>::<a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a70f91e3ffdc9f07f39fd8726fca58a67">value</a>, <span class="keywordtype">void</span>>::type* );</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">template</span><<span class="keyword">typename</span> C> <span class="keyword">static</span> std::false_type <a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a0113cae55143dc0ba58bf55c57d6638e">testEnd</a>(...);</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#ac3ca889a3ce90100f506d0fc34266e31"> 46</a></span>  <span class="keyword">static</span> constexpr <span class="keywordtype">bool</span> <a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#ac3ca889a3ce90100f506d0fc34266e31">beg_value</a> = decltype(testBeg<Tp>(<span class="keyword">nullptr</span>))::<a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a70f91e3ffdc9f07f39fd8726fca58a67">value</a>;</div><div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a472a4137fec982deed602ef9593a98cc"> 47</a></span>  <span class="keyword">static</span> constexpr <span class="keywordtype">bool</span> <a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a472a4137fec982deed602ef9593a98cc">end_value</a> = decltype(testEnd<Tp>(<span class="keyword">nullptr</span>))::<a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a70f91e3ffdc9f07f39fd8726fca58a67">value</a>;</div><div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a70f91e3ffdc9f07f39fd8726fca58a67"> 48</a></span>  <span class="keyword">static</span> constexpr <span class="keywordtype">bool</span> <a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a70f91e3ffdc9f07f39fd8726fca58a67">value</a> = <a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#ac3ca889a3ce90100f506d0fc34266e31">beg_value</a> && <a class="code" href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a472a4137fec982deed602ef9593a98cc">end_value</a>;</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  };</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  } <span class="comment">// namespace _detail</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"></span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Tp></div><div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="structzypp_1_1has__type__const__iterator.html"> 55</a></span>  <span class="keyword">struct </span><a class="code" href="structzypp_1_1has__type__const__iterator.html">has_type_const_iterator</a></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  : <span class="keyword">public</span> std::integral_constant<bool, _detail::has_type_const_iterator<Tp>::value></div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  {};</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Tp></div><div class="line"><a name="l00061"></a><span class="lineno"><a class="line" href="structzypp_1_1has__container__begin__end.html"> 61</a></span>  <span class="keyword">struct </span><a class="code" href="structzypp_1_1has__container__begin__end.html">has_container_begin_end</a></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  : <span class="keyword">public</span> std::integral_constant<bool, _detail::_has_container_begin_end<Tp>::value></div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  {};</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Tp></div><div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="structzypp_1_1is__container.html"> 67</a></span>  <span class="keyword">struct </span><a class="code" href="structzypp_1_1is__container.html">is_container</a></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  : <span class="keyword">public</span> std::integral_constant<bool, !std::is_same<Tp, std::string>::value && has_container_begin_end<Tp>::value></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  {};</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> } <span class="comment">// namespace zypp</span></div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"></span><span class="preprocessor">#endif // ZYPP_TYPETRAITS_H</span></div><div class="ttc" id="structzypp_1_1__detail_1_1__has__container__begin__end_html_a0113cae55143dc0ba58bf55c57d6638e"><div class="ttname"><a href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a0113cae55143dc0ba58bf55c57d6638e">zypp::_detail::_has_container_begin_end::testEnd</a></div><div class="ttdeci">static std::true_type testEnd(typename std::enable_if< std::is_same< decltype(static_cast< Signature< C >>(&C::end)), Signature< C >>::value, void >::type *)</div></div>
<div class="ttc" id="structzypp_1_1is__container_html"><div class="ttname"><a href="structzypp_1_1is__container.html">zypp::is_container</a></div><div class="ttdoc">Whether Tp is a container (begin/end iterabel, but not plain std::string)</div><div class="ttdef"><b>Definition:</b> <a href="TypeTraits_8h_source.html#l00067">TypeTraits.h:67</a></div></div>
<div class="ttc" id="structzypp_1_1__detail_1_1__has__type__const__iterator_html_a2178737839affdb316839954f0761ac4"><div class="ttname"><a href="structzypp_1_1__detail_1_1__has__type__const__iterator.html#a2178737839affdb316839954f0761ac4">zypp::_detail::_has_type_const_iterator::test</a></div><div class="ttdeci">static std::true_type test(typename C::const_iterator *)</div></div>
<div class="ttc" id="structzypp_1_1__detail_1_1__has__container__begin__end_html_a89363c1eaf3b6a2df27f471caa8b7f52"><div class="ttname"><a href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a89363c1eaf3b6a2df27f471caa8b7f52">zypp::_detail::_has_container_begin_end::testBeg</a></div><div class="ttdeci">static std::true_type testBeg(typename std::enable_if< std::is_same< decltype(static_cast< Signature< C >>(&C::begin)), Signature< C >>::value, void >::type *)</div></div>
<div class="ttc" id="structzypp_1_1__detail_1_1__has__type__const__iterator_html_a53e62f90646cb6e70362d94638784aa3"><div class="ttname"><a href="structzypp_1_1__detail_1_1__has__type__const__iterator.html#a53e62f90646cb6e70362d94638784aa3">zypp::_detail::_has_type_const_iterator::value</a></div><div class="ttdeci">static constexpr bool value</div><div class="ttdef"><b>Definition:</b> <a href="TypeTraits_8h_source.html#l00029">TypeTraits.h:29</a></div></div>
<div class="ttc" id="structzypp_1_1has__type__const__iterator_html"><div class="ttname"><a href="structzypp_1_1has__type__const__iterator.html">zypp::has_type_const_iterator</a></div><div class="ttdoc">Whether Tp defines type Tp::const_iterator.</div><div class="ttdef"><b>Definition:</b> <a href="TypeTraits_8h_source.html#l00055">TypeTraits.h:55</a></div></div>
<div class="ttc" id="structzypp_1_1__detail_1_1__has__container__begin__end_html_ac3ca889a3ce90100f506d0fc34266e31"><div class="ttname"><a href="structzypp_1_1__detail_1_1__has__container__begin__end.html#ac3ca889a3ce90100f506d0fc34266e31">zypp::_detail::_has_container_begin_end::beg_value</a></div><div class="ttdeci">static constexpr bool beg_value</div><div class="ttdef"><b>Definition:</b> <a href="TypeTraits_8h_source.html#l00046">TypeTraits.h:46</a></div></div>
<div class="ttc" id="structzypp_1_1has__container__begin__end_html"><div class="ttname"><a href="structzypp_1_1has__container__begin__end.html">zypp::has_container_begin_end</a></div><div class="ttdoc">Whether Tp defines methods Tp::const_iterator begin/end() const</div><div class="ttdef"><b>Definition:</b> <a href="TypeTraits_8h_source.html#l00061">TypeTraits.h:61</a></div></div>
<div class="ttc" id="structzypp_1_1__detail_1_1__has__container__begin__end_html_a472a4137fec982deed602ef9593a98cc"><div class="ttname"><a href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a472a4137fec982deed602ef9593a98cc">zypp::_detail::_has_container_begin_end::end_value</a></div><div class="ttdeci">static constexpr bool end_value</div><div class="ttdef"><b>Definition:</b> <a href="TypeTraits_8h_source.html#l00047">TypeTraits.h:47</a></div></div>
<div class="ttc" id="structzypp_1_1__detail_1_1__has__container__begin__end_html_a70f91e3ffdc9f07f39fd8726fca58a67"><div class="ttname"><a href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a70f91e3ffdc9f07f39fd8726fca58a67">zypp::_detail::_has_container_begin_end::value</a></div><div class="ttdeci">static constexpr bool value</div><div class="ttdef"><b>Definition:</b> <a href="TypeTraits_8h_source.html#l00048">TypeTraits.h:48</a></div></div>
<div class="ttc" id="structzypp_1_1__detail_1_1__has__container__begin__end_html_a40993bb55405384771dc7d3860ce2d76"><div class="ttname"><a href="structzypp_1_1__detail_1_1__has__container__begin__end.html#a40993bb55405384771dc7d3860ce2d76">zypp::_detail::_has_container_begin_end::Signature</a></div><div class="ttdeci">typename C::const_iterator(C::*)() const Signature</div><div class="ttdef"><b>Definition:</b> <a href="TypeTraits_8h_source.html#l00037">TypeTraits.h:37</a></div></div>
<div class="ttc" id="structzypp_1_1__detail_1_1__has__container__begin__end_html"><div class="ttname"><a href="structzypp_1_1__detail_1_1__has__container__begin__end.html">zypp::_detail::_has_container_begin_end</a></div><div class="ttdef"><b>Definition:</b> <a href="TypeTraits_8h_source.html#l00033">TypeTraits.h:33</a></div></div>
<div class="ttc" id="namespacezypp_html"><div class="ttname"><a href="namespacezypp.html">zypp</a></div><div class="ttdoc">Easy-to use interface to the ZYPP dependency resolver.</div><div class="ttdef"><b>Definition:</b> <a href="CodePitfalls_8doc_source.html#l00001">CodePitfalls.doc:1</a></div></div>
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