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<div class="title">iterator.hpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="preprocessor">#ifndef ENTT_ENTITY_ITERATOR_HPP</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="preprocessor">#define ENTT_ENTITY_ITERATOR_HPP</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160; </div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160; </div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="preprocessor">#include &lt;array&gt;</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="preprocessor">#include &lt;cstddef&gt;</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="preprocessor">#include &lt;iterator&gt;</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor">#include &lt;tuple&gt;</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#include &lt;utility&gt;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &quot;../config/config.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &quot;entity.hpp&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &quot;sparse_set.hpp&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160; </div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160; </div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceentt.html">entt</a> {</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160; </div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160; </div>
<div class="line"><a name="l00019"></a><span class="lineno"><a class="line" href="structentt_1_1stable__storage__policy.html"> 19</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structentt_1_1stable__storage__policy.html">stable_storage_policy</a> {</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Entity&gt;</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; [[nodiscard]] <span class="keyword">static</span> constexpr <span class="keywordtype">bool</span> accept(<span class="keyword">const</span> Entity <a class="code" href="namespaceentt.html#a0b54e231d069e8a231e14b223388808a">entity</a>) ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceentt.html#a0b54e231d069e8a231e14b223388808a">entity</a> != <a class="code" href="namespaceentt.html#a674269102fdfe3fd6d7766210a828862">tombstone</a>;</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160; }</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;};</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; </div>
<div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="structentt_1_1packed__storage__policy.html"> 36</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structentt_1_1packed__storage__policy.html">packed_storage_policy</a> {</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Entity&gt;</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; [[nodiscard]] <span class="keyword">static</span> constexpr <span class="keywordtype">bool</span> accept(<span class="keyword">const</span> Entity) ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; }</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;};</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; </div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Policy, <span class="keyword">typename</span> It, std::<span class="keywordtype">size_t</span> AllOf, std::<span class="keywordtype">size_t</span> NoneOf&gt;</div>
<div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="classentt_1_1view__iterator.html"> 53</a></span>&#160;<span class="keyword">class </span><a class="code" href="classentt_1_1view__iterator.html">view_iterator</a> final {</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <span class="keyword">using</span> <a class="code" href="classentt_1_1basic__sparse__set.html">basic_common_type</a> = <a class="code" href="classentt_1_1basic__sparse__set.html">basic_sparse_set&lt;typename std::iterator_traits&lt;It&gt;::value_type</a>&gt;;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; </div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; [[nodiscard]] <span class="keywordtype">bool</span> valid()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keyword">const</span> <span class="keyword">auto</span> <a class="code" href="namespaceentt.html">entt</a> = *it;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keywordflow">return</span> Policy::accept(<a class="code" href="namespaceentt.html">entt</a>)</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; &amp;&amp; std::apply([<a class="code" href="namespaceentt.html">entt</a>](<span class="keyword">const</span> <span class="keyword">auto</span> *... curr) { <span class="keywordflow">return</span> (curr-&gt;contains(<a class="code" href="namespaceentt.html">entt</a>) &amp;&amp; ...); }, pools)</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; &amp;&amp; std::apply([<a class="code" href="namespaceentt.html">entt</a>](<span class="keyword">const</span> <span class="keyword">auto</span> *... curr) { <span class="keywordflow">return</span> (!curr-&gt;contains(<a class="code" href="namespaceentt.html">entt</a>) &amp;&amp; ...); }, filter);</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; }</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keyword">using</span> difference_type = <span class="keyword">typename</span> std::iterator_traits&lt;It&gt;::difference_type;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="keyword">using</span> value_type = <span class="keyword">typename</span> std::iterator_traits&lt;It&gt;::value_type;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keyword">using</span> pointer = <span class="keyword">typename</span> std::iterator_traits&lt;It&gt;::pointer;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="keyword">using</span> reference = <span class="keyword">typename</span> std::iterator_traits&lt;It&gt;::reference;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keyword">using</span> iterator_category = std::bidirectional_iterator_tag;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <a class="code" href="classentt_1_1view__iterator.html">view_iterator</a>() ENTT_NOEXCEPT</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; : first{},</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; last{},</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; it{},</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; pools{},</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; filter{}</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; {}</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <a class="code" href="classentt_1_1view__iterator.html">view_iterator</a>(It from, It to, It curr, std::array&lt;const basic_common_type *, AllOf&gt; all_of, std::array&lt;const basic_common_type *, NoneOf&gt; none_of) ENTT_NOEXCEPT</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; : first{std::move(from)},</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; last{std::move(to)},</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; it{std::move(curr)},</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; pools{all_of},</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; filter{none_of}</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; {</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <span class="keywordflow">if</span>(it != last &amp;&amp; !valid()) {</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; ++(*this);</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; }</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; }</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; </div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <a class="code" href="classentt_1_1view__iterator.html">view_iterator</a> &amp; operator++() ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="keywordflow">while</span>(++it != last &amp;&amp; !valid());</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; }</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; </div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; <a class="code" href="classentt_1_1view__iterator.html">view_iterator</a> operator++(<span class="keywordtype">int</span>) ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <a class="code" href="classentt_1_1view__iterator.html">view_iterator</a> orig = *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <span class="keywordflow">return</span> ++(*this), orig;</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; }</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; </div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <a class="code" href="classentt_1_1view__iterator.html">view_iterator</a> &amp; operator--() ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="keywordflow">while</span>(--it != first &amp;&amp; !valid());</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; }</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <a class="code" href="classentt_1_1view__iterator.html">view_iterator</a> operator--(<span class="keywordtype">int</span>) ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <a class="code" href="classentt_1_1view__iterator.html">view_iterator</a> orig = *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <span class="keywordflow">return</span> operator--(), orig;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; }</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; </div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; [[nodiscard]] <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code" href="classentt_1_1view__iterator.html">view_iterator</a> &amp;other) <span class="keyword">const</span> ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <span class="keywordflow">return</span> other.it == it;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; }</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; [[nodiscard]] <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> <a class="code" href="classentt_1_1view__iterator.html">view_iterator</a> &amp;other) <span class="keyword">const</span> ENTT_NOEXCEPT {</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <span class="keywordflow">return</span> !(*<span class="keyword">this</span> == other);</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; }</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; [[nodiscard]] pointer operator-&gt;()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; <span class="keywordflow">return</span> &amp;*it;</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; }</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; </div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; [[nodiscard]] reference operator*()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; <span class="keywordflow">return</span> *operator-&gt;();</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; }</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; </div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; It first;</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; It last;</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; It it;</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; std::array&lt;const basic_common_type *, AllOf&gt; pools;</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; std::array&lt;const basic_common_type *, NoneOf&gt; filter;</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;};</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; </div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; </div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> It&gt;</div>
<div class="line"><a name="l00136"></a><span class="lineno"><a class="line" href="classentt_1_1view__iterator_3_01packed__storage__policy_00_01It_00_010u_00_010u_01_4.html"> 136</a></span>&#160;<span class="keyword">class </span><a class="code" href="classentt_1_1view__iterator.html">view_iterator</a>&lt;<a class="code" href="structentt_1_1packed__storage__policy.html">packed_storage_policy</a>, It, 0u, 0u&gt; final: <span class="keyword">public</span> It {</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; <span class="keyword">using</span> It::It;</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; <a class="code" href="classentt_1_1view__iterator.html">view_iterator</a>(It it)</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; : It{std::move(it)}</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; {}</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;};</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; </div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;}</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; </div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; </div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="ttc" id="aclassentt_1_1basic__sparse__set_html"><div class="ttname"><a href="classentt_1_1basic__sparse__set.html">entt::basic_sparse_set</a></div><div class="ttdoc">Basic sparse set implementation.</div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00053">sparse_set.hpp:53</a></div></div>
<div class="ttc" id="aclassentt_1_1view__iterator_html"><div class="ttname"><a href="classentt_1_1view__iterator.html">entt::view_iterator</a></div><div class="ttdef"><b>Definition:</b> <a href="iterator_8hpp_source.html#l00053">iterator.hpp:53</a></div></div>
<div class="ttc" id="anamespaceentt_html"><div class="ttname"><a href="namespaceentt.html">entt</a></div><div class="ttdoc">EnTT default namespace.</div><div class="ttdef"><b>Definition:</b> <a href="algorithm_8hpp_source.html#l00013">algorithm.hpp:13</a></div></div>
<div class="ttc" id="anamespaceentt_html_a0b54e231d069e8a231e14b223388808a"><div class="ttname"><a href="namespaceentt.html#a0b54e231d069e8a231e14b223388808a">entt::entity</a></div><div class="ttdeci">entity</div><div class="ttdoc">Default entity identifier.</div><div class="ttdef"><b>Definition:</b> <a href="entity_2fwd_8hpp_source.html#l00061">fwd.hpp:61</a></div></div>
<div class="ttc" id="anamespaceentt_html_a674269102fdfe3fd6d7766210a828862"><div class="ttname"><a href="namespaceentt.html#a674269102fdfe3fd6d7766210a828862">entt::tombstone</a></div><div class="ttdeci">constexpr tombstone_t tombstone</div><div class="ttdoc">Compile-time constant for tombstone entities.</div><div class="ttdef"><b>Definition:</b> <a href="entity_8hpp_source.html#l00345">entity.hpp:345</a></div></div>
<div class="ttc" id="astructentt_1_1packed__storage__policy_html"><div class="ttname"><a href="structentt_1_1packed__storage__policy.html">entt::packed_storage_policy</a></div><div class="ttdoc">Packed storage policy, aimed at faster linear iteration.</div><div class="ttdef"><b>Definition:</b> <a href="iterator_8hpp_source.html#l00036">iterator.hpp:36</a></div></div>
<div class="ttc" id="astructentt_1_1stable__storage__policy_html"><div class="ttname"><a href="structentt_1_1stable__storage__policy.html">entt::stable_storage_policy</a></div><div class="ttdoc">Stable storage policy, aimed at pointer stability.</div><div class="ttdef"><b>Definition:</b> <a href="iterator_8hpp_source.html#l00019">iterator.hpp:19</a></div></div>
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