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<a href="a00755.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">// Debugging support implementation -*- C++ -*-</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Copyright (C) 2003-2018 Free Software Foundation, Inc.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// This file is part of the GNU ISO C++ Library. This library is free</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// software; you can redistribute it and/or modify it under the</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// terms of the GNU General Public License as published by the</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Free Software Foundation; either version 3, or (at your option)</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// any later version.</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// This library is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// GNU General Public License for more details.</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="comment">// Under Section 7 of GPL version 3, you are granted additional</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// 3.1, as published by the Free Software Foundation.</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// You should have received a copy of the GNU General Public License and</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// <http://www.gnu.org/licenses/>.</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/** @file debug/helper_functions.h</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * This file is a GNU debug extension to the Standard C++ Library.</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> */</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#ifndef _GLIBCXX_DEBUG_HELPER_FUNCTIONS_H</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#define _GLIBCXX_DEBUG_HELPER_FUNCTIONS_H 1</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="preprocessor">#include <<a class="code" href="a00554.html">bits/stl_iterator_base_types.h</a>></span> <span class="comment">// for iterator_traits,</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="comment">// categories and _Iter_base</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include <<a class="code" href="a00311.html">bits/cpp_type_traits.h</a>></span> <span class="comment">// for __is_integer</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <<a class="code" href="a00572.html">bits/stl_pair.h</a>></span> <span class="comment">// for pair</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">namespace </span><a class="code" href="a01571.html">__gnu_debug</a></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> {<span class="comment"></span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> /** The precision to which we can calculate the distance between</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * two iterators.</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> */</span></div><div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="a01571.html#a3817879cb58c2db9f22712a634ef0b92"> 43</a></span>  <span class="keyword">enum</span> <a class="code" href="a01571.html#a3817879cb58c2db9f22712a634ef0b92">_Distance_precision</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>  __dp_none, <span class="comment">// Not even an iterator type</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  __dp_equality, <span class="comment">//< Can compare iterator equality, only</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  __dp_sign, <span class="comment">//< Can determine equality and ordering</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  __dp_exact <span class="comment">//< Can determine distance precisely</span></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> </div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Iterator,</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">typename</span> = <span class="keyword">typename</span> std::__is_integer<_Iterator>::__type></div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">struct </span>_Distance_traits</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  {</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">typedef</span></div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">typename</span> std::iterator_traits<_Iterator>::difference_type _ItDiffType;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _DiffType,</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">typename</span> = <span class="keyword">typename</span> std::__is_void<_DiffType>::__type></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keyword">struct </span>_DiffTraits</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  { <span class="keyword">typedef</span> _DiffType __type; };</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>  <span class="keyword">template</span><<span class="keyword">typename</span> _DiffType></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keyword">struct </span>_DiffTraits<_DiffType, <a class="code" href="a01541.html">std</a>::__true_type></div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  { <span class="keyword">typedef</span> std::ptrdiff_t __type; };</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _DiffTraits<_ItDiffType>::__type _DiffType;</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>  <span class="keyword">public</span>:</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">typedef</span> <a class="code" href="a07767.html">std::pair<_DiffType, _Distance_precision></a> __type;</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  };</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Integral></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">struct </span>_Distance_traits<_Integral, <a class="code" href="a01541.html">std</a>::__true_type></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  { <span class="keyword">typedef</span> <a class="code" href="a07767.html">std::pair<std::ptrdiff_t, _Distance_precision></a> __type; };</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"></span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"> /** Determine the distance between two iterators with some known</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"> * precision.</span></div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment"> */</span></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Iterator></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keyword">inline</span> <span class="keyword">typename</span> _Distance_traits<_Iterator>::__type</div><div class="line"><a name="l00083"></a><span class="lineno"><a class="line" href="a01571.html#a4c63b948ffb4aedd8656ab735dbe1f72"> 83</a></span>  <a class="code" href="a01571.html#a4c63b948ffb4aedd8656ab735dbe1f72">__get_distance</a>(<span class="keyword">const</span> _Iterator& __lhs, <span class="keyword">const</span> _Iterator& __rhs,</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <a class="code" href="a07671.html">std::random_access_iterator_tag</a>)</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  { <span class="keywordflow">return</span> <a class="code" href="a01480.html#ga0409e288f07b697cb6885d1002df0bd6">std::make_pair</a>(__rhs - __lhs, __dp_exact); }</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Iterator></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keyword">inline</span> <span class="keyword">typename</span> _Distance_traits<_Iterator>::__type</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <a class="code" href="a01571.html#a4c63b948ffb4aedd8656ab735dbe1f72">__get_distance</a>(<span class="keyword">const</span> _Iterator& __lhs, <span class="keyword">const</span> _Iterator& __rhs,</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <a class="code" href="a07655.html">std::input_iterator_tag</a>)</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  {</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">if</span> (__lhs == __rhs)</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">return</span> <a class="code" href="a01480.html#ga0409e288f07b697cb6885d1002df0bd6">std::make_pair</a>(0, __dp_exact);</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">return</span> <a class="code" href="a01480.html#ga0409e288f07b697cb6885d1002df0bd6">std::make_pair</a>(1, __dp_equality);</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  }</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Iterator></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">inline</span> <span class="keyword">typename</span> _Distance_traits<_Iterator>::__type</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <a class="code" href="a01571.html#a4c63b948ffb4aedd8656ab735dbe1f72">__get_distance</a>(<span class="keyword">const</span> _Iterator& __lhs, <span class="keyword">const</span> _Iterator& __rhs)</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  { <span class="keywordflow">return</span> <a class="code" href="a01571.html#a4c63b948ffb4aedd8656ab735dbe1f72">__get_distance</a>(__lhs, __rhs, <a class="code" href="a01507.html#ga89d3a7d239086516917bb7f6f9da213c">std::__iterator_category</a>(__lhs)); }</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"></span></div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"> /** We say that integral types for a valid range, and defer to other</span></div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"> * routines to realize what to do with integral types instead of</span></div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> * iterators.</span></div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"> */</span></div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Integral></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00109"></a><span class="lineno"><a class="line" href="a01571.html#a15b54d516d12b7abf066429f395236e6"> 109</a></span>  <a class="code" href="a01571.html#a15b54d516d12b7abf066429f395236e6">__valid_range_aux</a>(<span class="keyword">const</span> _Integral&, <span class="keyword">const</span> _Integral&,</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">typename</span> <a class="code" href="a07767.html">_Distance_traits<_Integral>::__type</a>& __dist,</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  std::__true_type)</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  {</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  __dist = <a class="code" href="a01480.html#ga0409e288f07b697cb6885d1002df0bd6">std::make_pair</a>(0, __dp_none);</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  }</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment"></span></div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"> /** We have iterators, so figure out what kind of iterators that are</span></div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"> * to see if we can check the range ahead of time.</span></div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment"> */</span></div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _InputIterator></div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00122"></a><span class="lineno"><a class="line" href="a01571.html#a7b7e692f12ebca32b03312c06d712a6d"> 122</a></span>  <a class="code" href="a01571.html#a15b54d516d12b7abf066429f395236e6">__valid_range_aux</a>(<span class="keyword">const</span> _InputIterator& __first,</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keyword">const</span> _InputIterator& __last,</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keyword">typename</span> <a class="code" href="a07767.html">_Distance_traits<_InputIterator>::__type</a>& __dist,</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  std::__false_type)</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  {</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  __dist = <a class="code" href="a01571.html#a4c63b948ffb4aedd8656ab735dbe1f72">__get_distance</a>(__first, __last);</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">switch</span> (__dist.<a class="code" href="a07767.html#a91179413226db12e66346d3673b7835f">second</a>)</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  {</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordflow">case</span> __dp_none:</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">case</span> __dp_equality:</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordflow">if</span> (__dist.<a class="code" href="a07767.html#a198b03cffc037835dc1dc01c926ce251">first</a> == 0)</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">case</span> __dp_sign:</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">case</span> __dp_exact:</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">return</span> __dist.<a class="code" href="a07767.html#a198b03cffc037835dc1dc01c926ce251">first</a> >= 0;</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="comment">// Can't tell so assume it is fine.</span></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  }</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment"></span></div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="comment"> /** Don't know what these iterators are, or if they are even</span></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment"> * iterators (we may get an integral type for InputIterator), so</span></div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="comment"> * see if they are integral and pass them on to the next phase</span></div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="comment"> * otherwise.</span></div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="comment"> */</span></div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _InputIterator></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00152"></a><span class="lineno"><a class="line" href="a01571.html#a7a57c826c2512395af4b96c7024a1ec2"> 152</a></span>  <a class="code" href="a01571.html#a7a57c826c2512395af4b96c7024a1ec2">__valid_range</a>(<span class="keyword">const</span> _InputIterator& __first, <span class="keyword">const</span> _InputIterator& __last,</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keyword">typename</span> <a class="code" href="a07767.html">_Distance_traits<_InputIterator>::__type</a>& __dist)</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  {</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> std::__is_integer<_InputIterator>::__type _Integral;</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">return</span> <a class="code" href="a01571.html#a15b54d516d12b7abf066429f395236e6">__valid_range_aux</a>(__first, __last, __dist, _Integral());</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  }</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _InputIterator></div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <a class="code" href="a01571.html#a7a57c826c2512395af4b96c7024a1ec2">__valid_range</a>(<span class="keyword">const</span> _InputIterator& __first, <span class="keyword">const</span> _InputIterator& __last)</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  {</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keyword">typename</span> _Distance_traits<_InputIterator>::__type __dist;</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordflow">return</span> <a class="code" href="a01571.html#a7a57c826c2512395af4b96c7024a1ec2">__valid_range</a>(__first, __last, __dist);</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  }</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="preprocessor">#if __cplusplus < 201103L</span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="comment">// Helper struct to detect random access safe iterators.</span></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Iterator></div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keyword">struct </span>__is_safe_random_iterator</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  {</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keyword">enum</span> { __value = 0 };</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keyword">typedef</span> std::__false_type __type;</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  };</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Iterator></div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keyword">struct </span>_Siter_base</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  : std::_Iter_base<_Iterator, __is_safe_random_iterator<_Iterator>::__value></div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  { };</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="comment"></span></div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="comment"> /** Helper function to extract base iterator of random access safe iterator</span></div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="comment"> in order to reduce performance impact of debug mode. Limited to random</span></div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="comment"> access iterator because it is the only category for which it is possible</span></div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="comment"> to check for correct iterators order in the __valid_range function</span></div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="comment"> thanks to the < operator.</span></div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="comment"> */</span></div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Iterator></div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keyword">inline</span> <span class="keyword">typename</span> _Siter_base<_Iterator>::iterator_type</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  __base(_Iterator __it)</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  { <span class="keywordflow">return</span> _Siter_base<_Iterator>::_S_base(__it); }</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="preprocessor">#else</span></div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Iterator></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keyword">inline</span> _Iterator</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  __base(_Iterator __it)</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  { <span class="keywordflow">return</span> __it; }</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="preprocessor">#if __cplusplus < 201103L</span></div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Iterator></div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keyword">struct </span>_Unsafe_type</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  { <span class="keyword">typedef</span> _Iterator _Type; };</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span> </div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="comment">/* Remove debug mode safe iterator layer, if any. */</span></div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Iterator></div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keyword">inline</span> _Iterator</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  __unsafe(_Iterator __it)</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  { <span class="keywordflow">return</span> __it; }</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="preprocessor">#endif</span></div><div class="ttc" id="a01571_html_a15b54d516d12b7abf066429f395236e6"><div class="ttname"><a href="a01571.html#a15b54d516d12b7abf066429f395236e6">__gnu_debug::__valid_range_aux</a></div><div class="ttdeci">bool __valid_range_aux(const _Integral &, const _Integral &, typename _Distance_traits< _Integral >::__type &__dist, std::__true_type)</div><div class="ttdef"><b>Definition:</b> <a href="a00755_source.html#l00109">helper_functions.h:109</a></div></div>
<div class="ttc" id="a07767_html"><div class="ttname"><a href="a07767.html">std::pair</a></div><div class="ttdoc">Struct holding two objects of arbitrary type.</div><div class="ttdef"><b>Definition:</b> <a href="a00572_source.html#l00208">stl_pair.h:208</a></div></div>
<div class="ttc" id="a07655_html"><div class="ttname"><a href="a07655.html">std::input_iterator_tag</a></div><div class="ttdoc">Marking input iterators.</div><div class="ttdef"><b>Definition:</b> <a href="a00554_source.html#l00089">stl_iterator_base_types.h:89</a></div></div>
<div class="ttc" id="a01571_html"><div class="ttname"><a href="a01571.html">__gnu_debug</a></div><div class="ttdoc">GNU debug classes for public use.</div></div>
<div class="ttc" id="a01480_html_ga0409e288f07b697cb6885d1002df0bd6"><div class="ttname"><a href="a01480.html#ga0409e288f07b697cb6885d1002df0bd6">std::make_pair</a></div><div class="ttdeci">constexpr pair< typename __decay_and_strip< _T1 >::__type, typename __decay_and_strip< _T2 >::__type > make_pair(_T1 &&__x, _T2 &&__y)</div><div class="ttdoc">A convenience wrapper for creating a pair from two objects.</div><div class="ttdef"><b>Definition:</b> <a href="a00572_source.html#l00524">stl_pair.h:524</a></div></div>
<div class="ttc" id="a01571_html_a3817879cb58c2db9f22712a634ef0b92"><div class="ttname"><a href="a01571.html#a3817879cb58c2db9f22712a634ef0b92">__gnu_debug::_Distance_precision</a></div><div class="ttdeci">_Distance_precision</div><div class="ttdef"><b>Definition:</b> <a href="a00755_source.html#l00043">helper_functions.h:43</a></div></div>
<div class="ttc" id="a01541_html"><div class="ttname"><a href="a01541.html">std</a></div><div class="ttdoc">ISO C++ entities toplevel namespace is std.</div></div>
<div class="ttc" id="a01571_html_a4c63b948ffb4aedd8656ab735dbe1f72"><div class="ttname"><a href="a01571.html#a4c63b948ffb4aedd8656ab735dbe1f72">__gnu_debug::__get_distance</a></div><div class="ttdeci">_Distance_traits< _Iterator >::__type __get_distance(const _Iterator &__lhs, const _Iterator &__rhs, std::random_access_iterator_tag)</div><div class="ttdef"><b>Definition:</b> <a href="a00755_source.html#l00083">helper_functions.h:83</a></div></div>
<div class="ttc" id="a01507_html_ga89d3a7d239086516917bb7f6f9da213c"><div class="ttname"><a href="a01507.html#ga89d3a7d239086516917bb7f6f9da213c">std::__iterator_category</a></div><div class="ttdeci">constexpr iterator_traits< _Iter >::iterator_category __iterator_category(const _Iter &)</div><div class="ttdef"><b>Definition:</b> <a href="a00554_source.html#l00205">stl_iterator_base_types.h:205</a></div></div>
<div class="ttc" id="a01571_html_a7a57c826c2512395af4b96c7024a1ec2"><div class="ttname"><a href="a01571.html#a7a57c826c2512395af4b96c7024a1ec2">__gnu_debug::__valid_range</a></div><div class="ttdeci">bool __valid_range(const _InputIterator &__first, const _InputIterator &__last, typename _Distance_traits< _InputIterator >::__type &__dist)</div><div class="ttdef"><b>Definition:</b> <a href="a00755_source.html#l00152">helper_functions.h:152</a></div></div>
<div class="ttc" id="a00554_html"><div class="ttname"><a href="a00554.html">stl_iterator_base_types.h</a></div></div>
<div class="ttc" id="a00311_html"><div class="ttname"><a href="a00311.html">cpp_type_traits.h</a></div></div>
<div class="ttc" id="a07671_html"><div class="ttname"><a href="a07671.html">std::random_access_iterator_tag</a></div><div class="ttdoc">Random-access iterators support a superset of bidirectional iterator operations.</div><div class="ttdef"><b>Definition:</b> <a href="a00554_source.html#l00103">stl_iterator_base_types.h:103</a></div></div>
<div class="ttc" id="a00572_html"><div class="ttname"><a href="a00572.html">stl_pair.h</a></div></div>
<div class="ttc" id="a07767_html_a198b03cffc037835dc1dc01c926ce251"><div class="ttname"><a href="a07767.html#a198b03cffc037835dc1dc01c926ce251">std::pair::first</a></div><div class="ttdeci">_T1 first</div><div class="ttdoc">second_type is the second bound type</div><div class="ttdef"><b>Definition:</b> <a href="a00572_source.html#l00214">stl_pair.h:214</a></div></div>
<div class="ttc" id="a07767_html_a91179413226db12e66346d3673b7835f"><div class="ttname"><a href="a07767.html#a91179413226db12e66346d3673b7835f">std::pair::second</a></div><div class="ttdeci">_T2 second</div><div class="ttdoc">first is a copy of the first object</div><div class="ttdef"><b>Definition:</b> <a href="a00572_source.html#l00215">stl_pair.h:215</a></div></div>
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