<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.13"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>libstdc++: functional Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtreedata.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript">
$(document).ready(initResizable);
</script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">libstdc++
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.13 -->
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
<div id="nav-tree">
<div id="nav-tree-contents">
<div id="nav-sync" class="sync"></div>
</div>
</div>
<div id="splitbar" style="-moz-user-select:none;"
class="ui-resizable-handle">
</div>
</div>
<script type="text/javascript">
$(document).ready(function(){initNavTree('a00065_source.html','');});
</script>
<div id="doc-content">
<div class="header">
<div class="headertitle">
<div class="title">functional</div> </div>
</div><!--header-->
<div class="contents">
<a href="a00065.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> // <functional> -*- C++ -*-</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> // Copyright (C) 2001-2015 Free Software Foundation, Inc.</div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> //</div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> // This file is part of the GNU ISO C++ Library. This library is free</div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> // software; you can redistribute it and/or modify it under the</div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> // terms of the GNU General Public License as published by the</div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> // Free Software Foundation; either version 3, or (at your option)</div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> // any later version.</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> // This library is distributed in the hope that it will be useful,</div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> // but WITHOUT ANY WARRANTY; without even the implied warranty of</div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> // GNU General Public License for more details.</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> // Under Section 7 of GPL version 3, you are granted additional</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> // permissions described in the GCC Runtime Library Exception, version</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> // 3.1, as published by the Free Software Foundation.</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> // You should have received a copy of the GNU General Public License and</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> // a copy of the GCC Runtime Library Exception along with this program;</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> // <http://www.gnu.org/licenses/>.</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> /*</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  * Copyright (c) 1997</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  * Silicon Graphics Computer Systems, Inc.</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>  * Permission to use, copy, modify, distribute and sell this software</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  * and its documentation for any purpose is hereby granted without fee,</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  * provided that the above copyright notice appear in all copies and</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  * that both that copyright notice and this permission notice appear</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  * in supporting documentation. Silicon Graphics makes no</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  * representations about the suitability of this software for any</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  * purpose. It is provided "as is" without express or implied warranty.</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</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> </div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> /** @file include/functional</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  * This is a Standard C++ Library header.</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> </div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> #ifndef _GLIBCXX_FUNCTIONAL</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> #define _GLIBCXX_FUNCTIONAL 1</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> #pragma GCC system_header</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> #include <bits/c++config.h></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> #include <bits/stl_function.h></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> #if __cplusplus >= 201103L</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> #include <typeinfo></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> #include <new></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> #include <tuple></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> #include <type_traits></div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> #include <bits/functexcept.h></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> #include <bits/functional_hash.h></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> namespace std _GLIBCXX_VISIBILITY(default)</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> {</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> _GLIBCXX_BEGIN_NAMESPACE_VERSION</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>  template<typename _MemberPointer></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  class _Mem_fn;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  template<typename _Tp, typename _Class></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  _Mem_fn<_Tp _Class::*></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  mem_fn(_Tp _Class::*) noexcept;</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>  /// If we have found a result_type, extract it.</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  template<typename _Functor, typename = __void_t<>></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  struct _Maybe_get_result_type</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> </div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  template<typename _Functor></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  struct _Maybe_get_result_type<_Functor,</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  __void_t<typename _Functor::result_type>></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  { typedef typename _Functor::result_type result_type; };</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  /**</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  * Base class for any function object that has a weak result type, as</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  * defined in 20.8.2 [func.require] of C++11.</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  */</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  template<typename _Functor></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  struct _Weak_result_type_impl</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  : _Maybe_get_result_type<_Functor></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  { };</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  /// Retrieve the result type for a function type.</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  struct _Weak_result_type_impl<_Res(_ArgTypes...)></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  { typedef _Res result_type; };</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  struct _Weak_result_type_impl<_Res(_ArgTypes......)></div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  { typedef _Res result_type; };</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>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  struct _Weak_result_type_impl<_Res(_ArgTypes...) const></div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  { typedef _Res result_type; };</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  struct _Weak_result_type_impl<_Res(_ArgTypes......) const></div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  { typedef _Res result_type; };</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  struct _Weak_result_type_impl<_Res(_ArgTypes...) volatile></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  { typedef _Res result_type; };</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  struct _Weak_result_type_impl<_Res(_ArgTypes......) volatile></div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  { typedef _Res result_type; };</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  struct _Weak_result_type_impl<_Res(_ArgTypes...) const volatile></div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  { typedef _Res result_type; };</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  struct _Weak_result_type_impl<_Res(_ArgTypes......) const volatile></div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  { typedef _Res result_type; };</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  /// Retrieve the result type for a function reference.</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  struct _Weak_result_type_impl<_Res(&)(_ArgTypes...)></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  { typedef _Res result_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>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  struct _Weak_result_type_impl<_Res(&)(_ArgTypes......)></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  { typedef _Res result_type; };</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  /// Retrieve the result type for a function pointer.</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  struct _Weak_result_type_impl<_Res(*)(_ArgTypes...)></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  { typedef _Res result_type; };</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  struct _Weak_result_type_impl<_Res(*)(_ArgTypes......)></div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  { typedef _Res result_type; };</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>  /// Retrieve result type for a member function pointer.</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  template<typename _Res, typename _Class, typename... _ArgTypes></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes...)></div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  { typedef _Res result_type; };</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  template<typename _Res, typename _Class, typename... _ArgTypes></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes......)></div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  { typedef _Res result_type; };</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  /// Retrieve result type for a const member function pointer.</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  template<typename _Res, typename _Class, typename... _ArgTypes></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes...) const></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  { typedef _Res result_type; };</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>  template<typename _Res, typename _Class, typename... _ArgTypes></div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes......) const></div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  { typedef _Res result_type; };</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>  /// Retrieve result type for a volatile member function pointer.</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  template<typename _Res, typename _Class, typename... _ArgTypes></div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes...) volatile></div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  { typedef _Res result_type; };</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>  template<typename _Res, typename _Class, typename... _ArgTypes></div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes......) volatile></div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  { typedef _Res result_type; };</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>  /// Retrieve result type for a const volatile member function pointer.</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  template<typename _Res, typename _Class, typename... _ArgTypes></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes...)</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  const volatile></div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  { typedef _Res result_type; };</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>  template<typename _Res, typename _Class, typename... _ArgTypes></div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes......)</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  const volatile></div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  { typedef _Res result_type; };</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  /**</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  * Strip top-level cv-qualifiers from the function object and let</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  * _Weak_result_type_impl perform the real work.</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>  template<typename _Functor></div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  struct _Weak_result_type</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  : _Weak_result_type_impl<typename remove_cv<_Functor>::type></div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  { };</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>  /**</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  * Invoke a function object, which may be either a member pointer or a</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  * function object. The first parameter will tell which.</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  */</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  template<typename _Functor, typename... _Args></div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  inline</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  typename enable_if<</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  (!is_member_pointer<_Functor>::value</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  && !is_function<_Functor>::value</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  && !is_function<typename remove_pointer<_Functor>::type>::value),</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  typename result_of<_Functor&(_Args&&...)>::type</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  >::type</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  __invoke(_Functor& __f, _Args&&... __args)</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  {</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  return __f(std::forward<_Args>(__args)...);</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</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>  template<typename _Functor, typename... _Args></div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  inline</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  typename enable_if<</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  (is_member_pointer<_Functor>::value</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  && !is_function<_Functor>::value</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  && !is_function<typename remove_pointer<_Functor>::type>::value),</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  typename result_of<_Functor(_Args&&...)>::type</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  >::type</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  __invoke(_Functor& __f, _Args&&... __args)</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  {</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  return std::mem_fn(__f)(std::forward<_Args>(__args)...);</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  }</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span> </div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  // To pick up function references (that will become function pointers)</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  template<typename _Functor, typename... _Args></div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  inline</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  typename enable_if<</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  (is_pointer<_Functor>::value</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  && is_function<typename remove_pointer<_Functor>::type>::value),</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  typename result_of<_Functor(_Args&&...)>::type</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  >::type</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  __invoke(_Functor __f, _Args&&... __args)</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  {</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  return __f(std::forward<_Args>(__args)...);</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  }</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>  * Knowing which of unary_function and binary_function _Tp derives</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  * from, derives from the same and ensures that reference_wrapper</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  * will have a weak result type. See cases below.</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  */</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  template<bool _Unary, bool _Binary, typename _Tp></div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  struct _Reference_wrapper_base_impl;</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  // None of the nested argument types.</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  template<typename _Tp></div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  struct _Reference_wrapper_base_impl<false, false, _Tp></div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  : _Weak_result_type<_Tp></div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  { };</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span> </div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  // Nested argument_type only.</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  template<typename _Tp></div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  struct _Reference_wrapper_base_impl<true, false, _Tp></div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  : _Weak_result_type<_Tp></div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  {</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  typedef typename _Tp::argument_type argument_type;</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  };</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>  // Nested first_argument_type and second_argument_type only.</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  template<typename _Tp></div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  struct _Reference_wrapper_base_impl<false, true, _Tp></div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  : _Weak_result_type<_Tp></div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  {</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  typedef typename _Tp::first_argument_type first_argument_type;</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  typedef typename _Tp::second_argument_type second_argument_type;</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  };</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span> </div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  // All the nested argument types.</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  template<typename _Tp></div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  struct _Reference_wrapper_base_impl<true, true, _Tp></div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  : _Weak_result_type<_Tp></div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  {</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  typedef typename _Tp::argument_type argument_type;</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  typedef typename _Tp::first_argument_type first_argument_type;</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  typedef typename _Tp::second_argument_type second_argument_type;</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>  _GLIBCXX_HAS_NESTED_TYPE(argument_type)</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  _GLIBCXX_HAS_NESTED_TYPE(first_argument_type)</div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  _GLIBCXX_HAS_NESTED_TYPE(second_argument_type)</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>  /**</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  * Derives from unary_function or binary_function when it</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  * can. Specializations handle all of the easy cases. The primary</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  * template determines what to do with a class type, which may</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  * derive from both unary_function and binary_function.</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  */</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  template<typename _Tp></div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  struct _Reference_wrapper_base</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  : _Reference_wrapper_base_impl<</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  __has_argument_type<_Tp>::value,</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  __has_first_argument_type<_Tp>::value</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  && __has_second_argument_type<_Tp>::value,</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  _Tp></div><div class="line"><a name="l00288"></a><span class="lineno"> 288</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>  // - a function type (unary)</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  template<typename _Res, typename _T1></div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  struct _Reference_wrapper_base<_Res(_T1)></div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  : unary_function<_T1, _Res></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>  template<typename _Res, typename _T1></div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  struct _Reference_wrapper_base<_Res(_T1) const></div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  : unary_function<_T1, _Res></div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  { };</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>  template<typename _Res, typename _T1></div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  struct _Reference_wrapper_base<_Res(_T1) volatile></div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  : unary_function<_T1, _Res></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> </div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  template<typename _Res, typename _T1></div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  struct _Reference_wrapper_base<_Res(_T1) const volatile></div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  : unary_function<_T1, _Res></div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  { };</div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span> </div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  // - a function type (binary)</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  template<typename _Res, typename _T1, typename _T2></div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  struct _Reference_wrapper_base<_Res(_T1, _T2)></div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  : binary_function<_T1, _T2, _Res></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>  template<typename _Res, typename _T1, typename _T2></div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  struct _Reference_wrapper_base<_Res(_T1, _T2) const></div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  : binary_function<_T1, _T2, _Res></div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  { };</div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span> </div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  template<typename _Res, typename _T1, typename _T2></div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  struct _Reference_wrapper_base<_Res(_T1, _T2) volatile></div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  : binary_function<_T1, _T2, _Res></div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  { };</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>  template<typename _Res, typename _T1, typename _T2></div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  struct _Reference_wrapper_base<_Res(_T1, _T2) const volatile></div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  : binary_function<_T1, _T2, _Res></div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  { };</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span> </div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  // - a function pointer type (unary)</div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  template<typename _Res, typename _T1></div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  struct _Reference_wrapper_base<_Res(*)(_T1)></div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  : unary_function<_T1, _Res></div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  { };</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>  // - a function pointer type (binary)</div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  template<typename _Res, typename _T1, typename _T2></div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  struct _Reference_wrapper_base<_Res(*)(_T1, _T2)></div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  : binary_function<_T1, _T2, _Res></div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  { };</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>  // - a pointer to member function type (unary, no qualifiers)</div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  template<typename _Res, typename _T1></div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  struct _Reference_wrapper_base<_Res (_T1::*)()></div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  : unary_function<_T1*, _Res></div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  { };</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>  // - a pointer to member function type (binary, no qualifiers)</div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  template<typename _Res, typename _T1, typename _T2></div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  struct _Reference_wrapper_base<_Res (_T1::*)(_T2)></div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  : binary_function<_T1*, _T2, _Res></div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  { };</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>  // - a pointer to member function type (unary, const)</div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  template<typename _Res, typename _T1></div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  struct _Reference_wrapper_base<_Res (_T1::*)() const></div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  : unary_function<const _T1*, _Res></div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  { };</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>  // - a pointer to member function type (binary, const)</div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  template<typename _Res, typename _T1, typename _T2></div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  struct _Reference_wrapper_base<_Res (_T1::*)(_T2) const></div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  : binary_function<const _T1*, _T2, _Res></div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  { };</div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span> </div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  // - a pointer to member function type (unary, volatile)</div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  template<typename _Res, typename _T1></div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  struct _Reference_wrapper_base<_Res (_T1::*)() volatile></div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  : unary_function<volatile _T1*, _Res></div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  { };</div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span> </div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  // - a pointer to member function type (binary, volatile)</div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  template<typename _Res, typename _T1, typename _T2></div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  struct _Reference_wrapper_base<_Res (_T1::*)(_T2) volatile></div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  : binary_function<volatile _T1*, _T2, _Res></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>  // - a pointer to member function type (unary, const volatile)</div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  template<typename _Res, typename _T1></div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  struct _Reference_wrapper_base<_Res (_T1::*)() const volatile></div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  : unary_function<const volatile _T1*, _Res></div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  { };</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>  // - a pointer to member function type (binary, const volatile)</div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  template<typename _Res, typename _T1, typename _T2></div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  struct _Reference_wrapper_base<_Res (_T1::*)(_T2) const volatile></div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  : binary_function<const volatile _T1*, _T2, _Res></div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  { };</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>  /**</div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  * @brief Primary class template for reference_wrapper.</div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  * @ingroup functors</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>  template<typename _Tp></div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  class reference_wrapper</div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  : public _Reference_wrapper_base<typename remove_cv<_Tp>::type></div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  {</div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  _Tp* _M_data;</div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span> </div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  public:</div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  typedef _Tp type;</div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span> </div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  reference_wrapper(_Tp& __indata) noexcept</div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  : _M_data(std::__addressof(__indata))</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> </div><div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  reference_wrapper(_Tp&&) = delete;</div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span> </div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  reference_wrapper(const reference_wrapper&) = default;</div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span> </div><div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  reference_wrapper&</div><div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  operator=(const reference_wrapper&) = default;</div><div class="line"><a name="l00416"></a><span class="lineno"> 416</span> </div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  operator _Tp&() const noexcept</div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  { return this->get(); }</div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span> </div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  _Tp&</div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  get() const noexcept</div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  { return *_M_data; }</div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span> </div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  template<typename... _Args></div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  typename result_of<_Tp&(_Args&&...)>::type</div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  operator()(_Args&&... __args) const</div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  {</div><div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  return __invoke(get(), std::forward<_Args>(__args)...);</div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  }</div><div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  };</div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span> </div><div class="line"><a name="l00432"></a><span class="lineno"> 432</span> </div><div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  /// Denotes a reference should be taken to a variable.</div><div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  template<typename _Tp></div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  inline reference_wrapper<_Tp></div><div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  ref(_Tp& __t) noexcept</div><div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  { return reference_wrapper<_Tp>(__t); }</div><div class="line"><a name="l00438"></a><span class="lineno"> 438</span> </div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  /// Denotes a const reference should be taken to a variable.</div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  template<typename _Tp></div><div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  inline reference_wrapper<const _Tp></div><div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  cref(const _Tp& __t) noexcept</div><div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  { return reference_wrapper<const _Tp>(__t); }</div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span> </div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  template<typename _Tp></div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  void ref(const _Tp&&) = delete;</div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span> </div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  template<typename _Tp></div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  void cref(const _Tp&&) = delete;</div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span> </div><div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  /// std::ref overload to prevent wrapping a reference_wrapper</div><div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  template<typename _Tp></div><div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  inline reference_wrapper<_Tp></div><div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  ref(reference_wrapper<_Tp> __t) noexcept</div><div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  { return std::ref(__t.get()); }</div><div class="line"><a name="l00456"></a><span class="lineno"> 456</span> </div><div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  /// std::cref overload to prevent wrapping a reference_wrapper</div><div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  template<typename _Tp></div><div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  inline reference_wrapper<const _Tp></div><div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  cref(reference_wrapper<_Tp> __t) noexcept</div><div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  { return std::cref(__t.get()); }</div><div class="line"><a name="l00462"></a><span class="lineno"> 462</span> </div><div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  // @} group functors</div><div class="line"><a name="l00464"></a><span class="lineno"> 464</span> </div><div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  template<typename... _Types></div><div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  struct _Pack : integral_constant<size_t, sizeof...(_Types)></div><div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  { };</div><div class="line"><a name="l00468"></a><span class="lineno"> 468</span> </div><div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  template<typename _From, typename _To, bool = _From::value == _To::value></div><div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  struct _AllConvertible : false_type</div><div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  { };</div><div class="line"><a name="l00472"></a><span class="lineno"> 472</span> </div><div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  template<typename... _From, typename... _To></div><div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  struct _AllConvertible<_Pack<_From...>, _Pack<_To...>, true></div><div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  : __and_<is_convertible<_From, _To>...></div><div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  { };</div><div class="line"><a name="l00477"></a><span class="lineno"> 477</span> </div><div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  template<typename _Tp1, typename _Tp2></div><div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  using _NotSame = __not_<is_same<typename std::decay<_Tp1>::type,</div><div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  typename std::decay<_Tp2>::type>>;</div><div class="line"><a name="l00481"></a><span class="lineno"> 481</span> </div><div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  /**</div><div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  * Derives from @c unary_function or @c binary_function, or perhaps</div><div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  * nothing, depending on the number of arguments provided. The</div><div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  * primary template is the basis case, which derives nothing.</div><div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  */</div><div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  struct _Maybe_unary_or_binary_function { };</div><div class="line"><a name="l00489"></a><span class="lineno"> 489</span> </div><div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  /// Derives from @c unary_function, as appropriate.</div><div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  template<typename _Res, typename _T1></div><div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  struct _Maybe_unary_or_binary_function<_Res, _T1></div><div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  : std::unary_function<_T1, _Res> { };</div><div class="line"><a name="l00494"></a><span class="lineno"> 494</span> </div><div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  /// Derives from @c binary_function, as appropriate.</div><div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  template<typename _Res, typename _T1, typename _T2></div><div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  struct _Maybe_unary_or_binary_function<_Res, _T1, _T2></div><div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  : std::binary_function<_T1, _T2, _Res> { };</div><div class="line"><a name="l00499"></a><span class="lineno"> 499</span> </div><div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  template<typename _Signature></div><div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  struct _Mem_fn_traits;</div><div class="line"><a name="l00502"></a><span class="lineno"> 502</span> </div><div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  template<typename _Res, typename _Class, typename... _ArgTypes></div><div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  struct _Mem_fn_traits_base</div><div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  {</div><div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  using __result_type = _Res;</div><div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  using __class_type = _Class;</div><div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  using __arg_types = _Pack<_ArgTypes...>;</div><div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  using __maybe_type</div><div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  = _Maybe_unary_or_binary_function<_Res, _Class*, _ArgTypes...>;</div><div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  using __arity = integral_constant<size_t, sizeof...(_ArgTypes)>;</div><div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  };</div><div class="line"><a name="l00513"></a><span class="lineno"> 513</span> </div><div class="line"><a name="l00514"></a><span class="lineno"> 514</span> #define _GLIBCXX_MEM_FN_TRAITS2(_CV, _REF, _LVAL, _RVAL) \</div><div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  template<typename _Res, typename _Class, typename... _ArgTypes> \</div><div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes...) _CV _REF> \</div><div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  : _Mem_fn_traits_base<_Res, _CV _Class, _ArgTypes...> \</div><div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  { \</div><div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  using __pmf_type = _Res (_Class::*)(_ArgTypes...) _CV _REF; \</div><div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  using __lvalue = _LVAL; \</div><div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  using __rvalue = _RVAL; \</div><div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  using __vararg = false_type; \</div><div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  }; \</div><div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  template<typename _Res, typename _Class, typename... _ArgTypes> \</div><div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  struct _Mem_fn_traits<_Res (_Class::*)(_ArgTypes... ...) _CV _REF> \</div><div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  : _Mem_fn_traits_base<_Res, _CV _Class, _ArgTypes...> \</div><div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  { \</div><div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  using __pmf_type = _Res (_Class::*)(_ArgTypes... ...) _CV _REF; \</div><div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  using __lvalue = _LVAL; \</div><div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  using __rvalue = _RVAL; \</div><div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  using __vararg = true_type; \</div><div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  };</div><div class="line"><a name="l00533"></a><span class="lineno"> 533</span> </div><div class="line"><a name="l00534"></a><span class="lineno"> 534</span> #define _GLIBCXX_MEM_FN_TRAITS(_REF, _LVAL, _RVAL) \</div><div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  _GLIBCXX_MEM_FN_TRAITS2( , _REF, _LVAL, _RVAL) \</div><div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  _GLIBCXX_MEM_FN_TRAITS2(const , _REF, _LVAL, _RVAL) \</div><div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  _GLIBCXX_MEM_FN_TRAITS2(volatile , _REF, _LVAL, _RVAL) \</div><div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  _GLIBCXX_MEM_FN_TRAITS2(const volatile, _REF, _LVAL, _RVAL)</div><div class="line"><a name="l00539"></a><span class="lineno"> 539</span> </div><div class="line"><a name="l00540"></a><span class="lineno"> 540</span> _GLIBCXX_MEM_FN_TRAITS( , true_type, true_type)</div><div class="line"><a name="l00541"></a><span class="lineno"> 541</span> _GLIBCXX_MEM_FN_TRAITS(&, true_type, false_type)</div><div class="line"><a name="l00542"></a><span class="lineno"> 542</span> _GLIBCXX_MEM_FN_TRAITS(&&, false_type, true_type)</div><div class="line"><a name="l00543"></a><span class="lineno"> 543</span> </div><div class="line"><a name="l00544"></a><span class="lineno"> 544</span> #undef _GLIBCXX_MEM_FN_TRAITS</div><div class="line"><a name="l00545"></a><span class="lineno"> 545</span> #undef _GLIBCXX_MEM_FN_TRAITS2</div><div class="line"><a name="l00546"></a><span class="lineno"> 546</span> </div><div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  template<typename _MemFunPtr,</div><div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  bool __is_mem_fn = is_member_function_pointer<_MemFunPtr>::value></div><div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  class _Mem_fn_base</div><div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  : public _Mem_fn_traits<_MemFunPtr>::__maybe_type</div><div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  {</div><div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  using _Traits = _Mem_fn_traits<_MemFunPtr>;</div><div class="line"><a name="l00553"></a><span class="lineno"> 553</span> </div><div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  using _Class = typename _Traits::__class_type;</div><div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  using _ArgTypes = typename _Traits::__arg_types;</div><div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  using _Pmf = typename _Traits::__pmf_type;</div><div class="line"><a name="l00557"></a><span class="lineno"> 557</span> </div><div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  using _Arity = typename _Traits::__arity;</div><div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  using _Varargs = typename _Traits::__vararg;</div><div class="line"><a name="l00560"></a><span class="lineno"> 560</span> </div><div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  template<typename _Func, typename... _BoundArgs></div><div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  friend struct _Bind_check_arity;</div><div class="line"><a name="l00563"></a><span class="lineno"> 563</span> </div><div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  // for varargs functions we just check the number of arguments,</div><div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  // otherwise we also check they are convertible.</div><div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  template<typename _Args></div><div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  using _CheckArgs = typename conditional<_Varargs::value,</div><div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  __bool_constant<(_Args::value >= _ArgTypes::value)>,</div><div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  _AllConvertible<_Args, _ArgTypes></div><div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  >::type;</div><div class="line"><a name="l00571"></a><span class="lineno"> 571</span> </div><div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  public:</div><div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  using result_type = typename _Traits::__result_type;</div><div class="line"><a name="l00574"></a><span class="lineno"> 574</span> </div><div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  explicit _Mem_fn_base(_Pmf __pmf) : _M_pmf(__pmf) { }</div><div class="line"><a name="l00576"></a><span class="lineno"> 576</span> </div><div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  // Handle objects</div><div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  template<typename... _Args, typename _Req</div><div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  = _Require<typename _Traits::__lvalue,</div><div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  _CheckArgs<_Pack<_Args...>>>></div><div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  result_type</div><div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  operator()(_Class& __object, _Args&&... __args) const</div><div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  { return (__object.*_M_pmf)(std::forward<_Args>(__args)...); }</div><div class="line"><a name="l00584"></a><span class="lineno"> 584</span> </div><div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  template<typename... _Args, typename _Req</div><div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  = _Require<typename _Traits::__rvalue,</div><div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  _CheckArgs<_Pack<_Args...>>>></div><div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  result_type</div><div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  operator()(_Class&& __object, _Args&&... __args) const</div><div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  {</div><div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  return (std::move(__object).*_M_pmf)(std::forward<_Args>(__args)...);</div><div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  }</div><div class="line"><a name="l00593"></a><span class="lineno"> 593</span> </div><div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  // Handle pointers</div><div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  template<typename... _Args, typename _Req</div><div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  = _Require<typename _Traits::__lvalue,</div><div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  _CheckArgs<_Pack<_Args...>>>></div><div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  result_type</div><div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  operator()(_Class* __object, _Args&&... __args) const</div><div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  { return (__object->*_M_pmf)(std::forward<_Args>(__args)...); }</div><div class="line"><a name="l00601"></a><span class="lineno"> 601</span> </div><div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  // Handle smart pointers, references and pointers to derived</div><div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  template<typename _Tp, typename... _Args, typename _Req</div><div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  = _Require<_NotSame<_Class, _Tp>, _NotSame<_Class*, _Tp>,</div><div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  _CheckArgs<_Pack<_Args...>>>></div><div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  result_type</div><div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  operator()(_Tp&& __object, _Args&&... __args) const</div><div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  {</div><div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  return _M_call(std::forward<_Tp>(__object), &__object,</div><div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  std::forward<_Args>(__args)...);</div><div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  }</div><div class="line"><a name="l00612"></a><span class="lineno"> 612</span> </div><div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  // Handle reference wrappers</div><div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  template<typename _Tp, typename... _Args, typename _Req</div><div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  = _Require<is_base_of<_Class, _Tp>, typename _Traits::__lvalue,</div><div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  _CheckArgs<_Pack<_Args...>>>></div><div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  result_type</div><div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  operator()(reference_wrapper<_Tp> __ref, _Args&&... __args) const</div><div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  { return operator()(__ref.get(), std::forward<_Args>(__args)...); }</div><div class="line"><a name="l00620"></a><span class="lineno"> 620</span> </div><div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  private:</div><div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  template<typename _Tp, typename... _Args></div><div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  result_type</div><div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  _M_call(_Tp&& __object, const volatile _Class *,</div><div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  _Args&&... __args) const</div><div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  {</div><div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  return (std::forward<_Tp>(__object).*_M_pmf)</div><div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  (std::forward<_Args>(__args)...);</div><div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  }</div><div class="line"><a name="l00630"></a><span class="lineno"> 630</span> </div><div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  template<typename _Tp, typename... _Args></div><div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  result_type</div><div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  _M_call(_Tp&& __ptr, const volatile void *, _Args&&... __args) const</div><div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  { return ((*__ptr).*_M_pmf)(std::forward<_Args>(__args)...); }</div><div class="line"><a name="l00635"></a><span class="lineno"> 635</span> </div><div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  _Pmf _M_pmf;</div><div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  };</div><div class="line"><a name="l00638"></a><span class="lineno"> 638</span> </div><div class="line"><a name="l00639"></a><span class="lineno"> 639</span>  // Partial specialization for member object pointers.</div><div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  template<typename _Res, typename _Class></div><div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  class _Mem_fn_base<_Res _Class::*, false></div><div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  {</div><div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  using __pm_type = _Res _Class::*;</div><div class="line"><a name="l00644"></a><span class="lineno"> 644</span> </div><div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  // This bit of genius is due to Peter Dimov, improved slightly by</div><div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  // Douglas Gregor.</div><div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  // Made less elegant to support perfect forwarding and noexcept.</div><div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  template<typename _Tp></div><div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  auto</div><div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  _M_call(_Tp&& __object, const _Class *) const noexcept</div><div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  -> decltype(std::forward<_Tp>(__object).*std::declval<__pm_type&>())</div><div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  { return std::forward<_Tp>(__object).*_M_pm; }</div><div class="line"><a name="l00653"></a><span class="lineno"> 653</span> </div><div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  template<typename _Tp, typename _Up></div><div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  auto</div><div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  _M_call(_Tp&& __object, _Up * const *) const noexcept</div><div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  -> decltype((*std::forward<_Tp>(__object)).*std::declval<__pm_type&>())</div><div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  { return (*std::forward<_Tp>(__object)).*_M_pm; }</div><div class="line"><a name="l00659"></a><span class="lineno"> 659</span> </div><div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  template<typename _Tp></div><div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  auto</div><div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  _M_call(_Tp&& __ptr, const volatile void*) const</div><div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  noexcept(noexcept((*__ptr).*std::declval<__pm_type&>()))</div><div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  -> decltype((*__ptr).*std::declval<__pm_type&>())</div><div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  { return (*__ptr).*_M_pm; }</div><div class="line"><a name="l00666"></a><span class="lineno"> 666</span> </div><div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  using _Arity = integral_constant<size_t, 0>;</div><div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  using _Varargs = false_type;</div><div class="line"><a name="l00669"></a><span class="lineno"> 669</span> </div><div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  template<typename _Func, typename... _BoundArgs></div><div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  friend struct _Bind_check_arity;</div><div class="line"><a name="l00672"></a><span class="lineno"> 672</span> </div><div class="line"><a name="l00673"></a><span class="lineno"> 673</span>  public:</div><div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  explicit</div><div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  _Mem_fn_base(_Res _Class::*__pm) noexcept : _M_pm(__pm) { }</div><div class="line"><a name="l00676"></a><span class="lineno"> 676</span> </div><div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  // Handle objects</div><div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  _Res&</div><div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  operator()(_Class& __object) const noexcept</div><div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  { return __object.*_M_pm; }</div><div class="line"><a name="l00681"></a><span class="lineno"> 681</span> </div><div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  const _Res&</div><div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  operator()(const _Class& __object) const noexcept</div><div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  { return __object.*_M_pm; }</div><div class="line"><a name="l00685"></a><span class="lineno"> 685</span> </div><div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  _Res&&</div><div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  operator()(_Class&& __object) const noexcept</div><div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  { return std::forward<_Class>(__object).*_M_pm; }</div><div class="line"><a name="l00689"></a><span class="lineno"> 689</span> </div><div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  const _Res&&</div><div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  operator()(const _Class&& __object) const noexcept</div><div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  { return std::forward<const _Class>(__object).*_M_pm; }</div><div class="line"><a name="l00693"></a><span class="lineno"> 693</span> </div><div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  // Handle pointers</div><div class="line"><a name="l00695"></a><span class="lineno"> 695</span>  _Res&</div><div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  operator()(_Class* __object) const noexcept</div><div class="line"><a name="l00697"></a><span class="lineno"> 697</span>  { return __object->*_M_pm; }</div><div class="line"><a name="l00698"></a><span class="lineno"> 698</span> </div><div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  const _Res&</div><div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  operator()(const _Class* __object) const noexcept</div><div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  { return __object->*_M_pm; }</div><div class="line"><a name="l00702"></a><span class="lineno"> 702</span> </div><div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  // Handle smart pointers and derived</div><div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  template<typename _Tp, typename _Req = _Require<_NotSame<_Class*, _Tp>>></div><div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  auto</div><div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  operator()(_Tp&& __unknown) const</div><div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  noexcept(noexcept(std::declval<_Mem_fn_base*>()->_M_call</div><div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  (std::forward<_Tp>(__unknown), &__unknown)))</div><div class="line"><a name="l00709"></a><span class="lineno"> 709</span>  -> decltype(this->_M_call(std::forward<_Tp>(__unknown), &__unknown))</div><div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  { return _M_call(std::forward<_Tp>(__unknown), &__unknown); }</div><div class="line"><a name="l00711"></a><span class="lineno"> 711</span> </div><div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  template<typename _Tp, typename _Req = _Require<is_base_of<_Class, _Tp>>></div><div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  auto</div><div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  operator()(reference_wrapper<_Tp> __ref) const</div><div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  noexcept(noexcept(std::declval<_Mem_fn_base&>()(__ref.get())))</div><div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  -> decltype((*this)(__ref.get()))</div><div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  { return (*this)(__ref.get()); }</div><div class="line"><a name="l00718"></a><span class="lineno"> 718</span> </div><div class="line"><a name="l00719"></a><span class="lineno"> 719</span>  private:</div><div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  _Res _Class::*_M_pm;</div><div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  };</div><div class="line"><a name="l00722"></a><span class="lineno"> 722</span> </div><div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  template<typename _Res, typename _Class></div><div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  struct _Mem_fn<_Res _Class::*></div><div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  : _Mem_fn_base<_Res _Class::*></div><div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  {</div><div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  using _Mem_fn_base<_Res _Class::*>::_Mem_fn_base;</div><div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  };</div><div class="line"><a name="l00729"></a><span class="lineno"> 729</span> </div><div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  // _GLIBCXX_RESOLVE_LIB_DEFECTS</div><div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  // 2048. Unnecessary mem_fn overloads</div><div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  /**</div><div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  * @brief Returns a function object that forwards to the member</div><div class="line"><a name="l00734"></a><span class="lineno"> 734</span>  * pointer @a pm.</div><div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  * @ingroup functors</div><div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  */</div><div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  template<typename _Tp, typename _Class></div><div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  inline _Mem_fn<_Tp _Class::*></div><div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  mem_fn(_Tp _Class::* __pm) noexcept</div><div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  {</div><div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  return _Mem_fn<_Tp _Class::*>(__pm);</div><div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  }</div><div class="line"><a name="l00743"></a><span class="lineno"> 743</span> </div><div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  /**</div><div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  * @brief Determines if the given type _Tp is a function object</div><div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  * should be treated as a subexpression when evaluating calls to</div><div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  * function objects returned by bind(). [TR1 3.6.1]</div><div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  * @ingroup binders</div><div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  */</div><div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  template<typename _Tp></div><div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  struct is_bind_expression</div><div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  : public false_type { };</div><div class="line"><a name="l00753"></a><span class="lineno"> 753</span> </div><div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  /**</div><div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  * @brief Determines if the given type _Tp is a placeholder in a</div><div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  * bind() expression and, if so, which placeholder it is. [TR1 3.6.2]</div><div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  * @ingroup binders</div><div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  */</div><div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  template<typename _Tp></div><div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  struct is_placeholder</div><div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  : public integral_constant<int, 0></div><div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  { };</div><div class="line"><a name="l00763"></a><span class="lineno"> 763</span> </div><div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  /** @brief The type of placeholder objects defined by libstdc++.</div><div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  * @ingroup binders</div><div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  */</div><div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  template<int _Num> struct _Placeholder { };</div><div class="line"><a name="l00768"></a><span class="lineno"> 768</span> </div><div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  _GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l00770"></a><span class="lineno"> 770</span> </div><div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  /** @namespace std::placeholders</div><div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  * @brief ISO C++11 entities sub-namespace for functional.</div><div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  * @ingroup binders</div><div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  */</div><div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  namespace placeholders</div><div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  {</div><div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  _GLIBCXX_BEGIN_NAMESPACE_VERSION</div><div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  /* Define a large number of placeholders. There is no way to</div><div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  * simplify this with variadic templates, because we're introducing</div><div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  * unique names for each.</div><div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  */</div><div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  extern const _Placeholder<1> _1;</div><div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  extern const _Placeholder<2> _2;</div><div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  extern const _Placeholder<3> _3;</div><div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  extern const _Placeholder<4> _4;</div><div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  extern const _Placeholder<5> _5;</div><div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  extern const _Placeholder<6> _6;</div><div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  extern const _Placeholder<7> _7;</div><div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  extern const _Placeholder<8> _8;</div><div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  extern const _Placeholder<9> _9;</div><div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  extern const _Placeholder<10> _10;</div><div class="line"><a name="l00792"></a><span class="lineno"> 792</span>  extern const _Placeholder<11> _11;</div><div class="line"><a name="l00793"></a><span class="lineno"> 793</span>  extern const _Placeholder<12> _12;</div><div class="line"><a name="l00794"></a><span class="lineno"> 794</span>  extern const _Placeholder<13> _13;</div><div class="line"><a name="l00795"></a><span class="lineno"> 795</span>  extern const _Placeholder<14> _14;</div><div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  extern const _Placeholder<15> _15;</div><div class="line"><a name="l00797"></a><span class="lineno"> 797</span>  extern const _Placeholder<16> _16;</div><div class="line"><a name="l00798"></a><span class="lineno"> 798</span>  extern const _Placeholder<17> _17;</div><div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  extern const _Placeholder<18> _18;</div><div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  extern const _Placeholder<19> _19;</div><div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  extern const _Placeholder<20> _20;</div><div class="line"><a name="l00802"></a><span class="lineno"> 802</span>  extern const _Placeholder<21> _21;</div><div class="line"><a name="l00803"></a><span class="lineno"> 803</span>  extern const _Placeholder<22> _22;</div><div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  extern const _Placeholder<23> _23;</div><div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  extern const _Placeholder<24> _24;</div><div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  extern const _Placeholder<25> _25;</div><div class="line"><a name="l00807"></a><span class="lineno"> 807</span>  extern const _Placeholder<26> _26;</div><div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  extern const _Placeholder<27> _27;</div><div class="line"><a name="l00809"></a><span class="lineno"> 809</span>  extern const _Placeholder<28> _28;</div><div class="line"><a name="l00810"></a><span class="lineno"> 810</span>  extern const _Placeholder<29> _29;</div><div class="line"><a name="l00811"></a><span class="lineno"> 811</span>  _GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  }</div><div class="line"><a name="l00813"></a><span class="lineno"> 813</span> </div><div class="line"><a name="l00814"></a><span class="lineno"> 814</span>  _GLIBCXX_BEGIN_NAMESPACE_VERSION</div><div class="line"><a name="l00815"></a><span class="lineno"> 815</span> </div><div class="line"><a name="l00816"></a><span class="lineno"> 816</span>  /**</div><div class="line"><a name="l00817"></a><span class="lineno"> 817</span>  * Partial specialization of is_placeholder that provides the placeholder</div><div class="line"><a name="l00818"></a><span class="lineno"> 818</span>  * number for the placeholder objects defined by libstdc++.</div><div class="line"><a name="l00819"></a><span class="lineno"> 819</span>  * @ingroup binders</div><div class="line"><a name="l00820"></a><span class="lineno"> 820</span>  */</div><div class="line"><a name="l00821"></a><span class="lineno"> 821</span>  template<int _Num></div><div class="line"><a name="l00822"></a><span class="lineno"> 822</span>  struct is_placeholder<_Placeholder<_Num> ></div><div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  : public integral_constant<int, _Num></div><div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  { };</div><div class="line"><a name="l00825"></a><span class="lineno"> 825</span> </div><div class="line"><a name="l00826"></a><span class="lineno"> 826</span>  template<int _Num></div><div class="line"><a name="l00827"></a><span class="lineno"> 827</span>  struct is_placeholder<const _Placeholder<_Num> ></div><div class="line"><a name="l00828"></a><span class="lineno"> 828</span>  : public integral_constant<int, _Num></div><div class="line"><a name="l00829"></a><span class="lineno"> 829</span>  { };</div><div class="line"><a name="l00830"></a><span class="lineno"> 830</span> </div><div class="line"><a name="l00831"></a><span class="lineno"> 831</span>  /**</div><div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  * Used by _Safe_tuple_element to indicate that there is no tuple</div><div class="line"><a name="l00833"></a><span class="lineno"> 833</span>  * element at this position.</div><div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  */</div><div class="line"><a name="l00835"></a><span class="lineno"> 835</span>  struct _No_tuple_element;</div><div class="line"><a name="l00836"></a><span class="lineno"> 836</span> </div><div class="line"><a name="l00837"></a><span class="lineno"> 837</span>  /**</div><div class="line"><a name="l00838"></a><span class="lineno"> 838</span>  * Implementation helper for _Safe_tuple_element. This primary</div><div class="line"><a name="l00839"></a><span class="lineno"> 839</span>  * template handles the case where it is safe to use @c</div><div class="line"><a name="l00840"></a><span class="lineno"> 840</span>  * tuple_element.</div><div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  */</div><div class="line"><a name="l00842"></a><span class="lineno"> 842</span>  template<std::size_t __i, typename _Tuple, bool _IsSafe></div><div class="line"><a name="l00843"></a><span class="lineno"> 843</span>  struct _Safe_tuple_element_impl</div><div class="line"><a name="l00844"></a><span class="lineno"> 844</span>  : tuple_element<__i, _Tuple> { };</div><div class="line"><a name="l00845"></a><span class="lineno"> 845</span> </div><div class="line"><a name="l00846"></a><span class="lineno"> 846</span>  /**</div><div class="line"><a name="l00847"></a><span class="lineno"> 847</span>  * Implementation helper for _Safe_tuple_element. This partial</div><div class="line"><a name="l00848"></a><span class="lineno"> 848</span>  * specialization handles the case where it is not safe to use @c</div><div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  * tuple_element. We just return @c _No_tuple_element.</div><div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  */</div><div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  template<std::size_t __i, typename _Tuple></div><div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  struct _Safe_tuple_element_impl<__i, _Tuple, false></div><div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  {</div><div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  typedef _No_tuple_element type;</div><div class="line"><a name="l00855"></a><span class="lineno"> 855</span>  };</div><div class="line"><a name="l00856"></a><span class="lineno"> 856</span> </div><div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  /**</div><div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  * Like tuple_element, but returns @c _No_tuple_element when</div><div class="line"><a name="l00859"></a><span class="lineno"> 859</span>  * tuple_element would return an error.</div><div class="line"><a name="l00860"></a><span class="lineno"> 860</span>  */</div><div class="line"><a name="l00861"></a><span class="lineno"> 861</span>  template<std::size_t __i, typename _Tuple></div><div class="line"><a name="l00862"></a><span class="lineno"> 862</span>  struct _Safe_tuple_element</div><div class="line"><a name="l00863"></a><span class="lineno"> 863</span>  : _Safe_tuple_element_impl<__i, _Tuple,</div><div class="line"><a name="l00864"></a><span class="lineno"> 864</span>  (__i < tuple_size<_Tuple>::value)></div><div class="line"><a name="l00865"></a><span class="lineno"> 865</span>  { };</div><div class="line"><a name="l00866"></a><span class="lineno"> 866</span> </div><div class="line"><a name="l00867"></a><span class="lineno"> 867</span>  /**</div><div class="line"><a name="l00868"></a><span class="lineno"> 868</span>  * Maps an argument to bind() into an actual argument to the bound</div><div class="line"><a name="l00869"></a><span class="lineno"> 869</span>  * function object [TR1 3.6.3/5]. Only the first parameter should</div><div class="line"><a name="l00870"></a><span class="lineno"> 870</span>  * be specified: the rest are used to determine among the various</div><div class="line"><a name="l00871"></a><span class="lineno"> 871</span>  * implementations. Note that, although this class is a function</div><div class="line"><a name="l00872"></a><span class="lineno"> 872</span>  * object, it isn't entirely normal because it takes only two</div><div class="line"><a name="l00873"></a><span class="lineno"> 873</span>  * parameters regardless of the number of parameters passed to the</div><div class="line"><a name="l00874"></a><span class="lineno"> 874</span>  * bind expression. The first parameter is the bound argument and</div><div class="line"><a name="l00875"></a><span class="lineno"> 875</span>  * the second parameter is a tuple containing references to the</div><div class="line"><a name="l00876"></a><span class="lineno"> 876</span>  * rest of the arguments.</div><div class="line"><a name="l00877"></a><span class="lineno"> 877</span>  */</div><div class="line"><a name="l00878"></a><span class="lineno"> 878</span>  template<typename _Arg,</div><div class="line"><a name="l00879"></a><span class="lineno"> 879</span>  bool _IsBindExp = is_bind_expression<_Arg>::value,</div><div class="line"><a name="l00880"></a><span class="lineno"> 880</span>  bool _IsPlaceholder = (is_placeholder<_Arg>::value > 0)></div><div class="line"><a name="l00881"></a><span class="lineno"> 881</span>  class _Mu;</div><div class="line"><a name="l00882"></a><span class="lineno"> 882</span> </div><div class="line"><a name="l00883"></a><span class="lineno"> 883</span>  /**</div><div class="line"><a name="l00884"></a><span class="lineno"> 884</span>  * If the argument is reference_wrapper<_Tp>, returns the</div><div class="line"><a name="l00885"></a><span class="lineno"> 885</span>  * underlying reference. [TR1 3.6.3/5 bullet 1]</div><div class="line"><a name="l00886"></a><span class="lineno"> 886</span>  */</div><div class="line"><a name="l00887"></a><span class="lineno"> 887</span>  template<typename _Tp></div><div class="line"><a name="l00888"></a><span class="lineno"> 888</span>  class _Mu<reference_wrapper<_Tp>, false, false></div><div class="line"><a name="l00889"></a><span class="lineno"> 889</span>  {</div><div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  public:</div><div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  typedef _Tp& result_type;</div><div class="line"><a name="l00892"></a><span class="lineno"> 892</span> </div><div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  /* Note: This won't actually work for const volatile</div><div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  * reference_wrappers, because reference_wrapper::get() is const</div><div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  * but not volatile-qualified. This might be a defect in the TR.</div><div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  */</div><div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  template<typename _CVRef, typename _Tuple></div><div class="line"><a name="l00898"></a><span class="lineno"> 898</span>  result_type</div><div class="line"><a name="l00899"></a><span class="lineno"> 899</span>  operator()(_CVRef& __arg, _Tuple&) const volatile</div><div class="line"><a name="l00900"></a><span class="lineno"> 900</span>  { return __arg.get(); }</div><div class="line"><a name="l00901"></a><span class="lineno"> 901</span>  };</div><div class="line"><a name="l00902"></a><span class="lineno"> 902</span> </div><div class="line"><a name="l00903"></a><span class="lineno"> 903</span>  /**</div><div class="line"><a name="l00904"></a><span class="lineno"> 904</span>  * If the argument is a bind expression, we invoke the underlying</div><div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  * function object with the same cv-qualifiers as we are given and</div><div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  * pass along all of our arguments (unwrapped). [TR1 3.6.3/5 bullet 2]</div><div class="line"><a name="l00907"></a><span class="lineno"> 907</span>  */</div><div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  template<typename _Arg></div><div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  class _Mu<_Arg, true, false></div><div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  {</div><div class="line"><a name="l00911"></a><span class="lineno"> 911</span>  public:</div><div class="line"><a name="l00912"></a><span class="lineno"> 912</span>  template<typename _CVArg, typename... _Args></div><div class="line"><a name="l00913"></a><span class="lineno"> 913</span>  auto</div><div class="line"><a name="l00914"></a><span class="lineno"> 914</span>  operator()(_CVArg& __arg,</div><div class="line"><a name="l00915"></a><span class="lineno"> 915</span>  tuple<_Args...>& __tuple) const volatile</div><div class="line"><a name="l00916"></a><span class="lineno"> 916</span>  -> decltype(__arg(declval<_Args>()...))</div><div class="line"><a name="l00917"></a><span class="lineno"> 917</span>  {</div><div class="line"><a name="l00918"></a><span class="lineno"> 918</span>  // Construct an index tuple and forward to __call</div><div class="line"><a name="l00919"></a><span class="lineno"> 919</span>  typedef typename _Build_index_tuple<sizeof...(_Args)>::__type</div><div class="line"><a name="l00920"></a><span class="lineno"> 920</span>  _Indexes;</div><div class="line"><a name="l00921"></a><span class="lineno"> 921</span>  return this->__call(__arg, __tuple, _Indexes());</div><div class="line"><a name="l00922"></a><span class="lineno"> 922</span>  }</div><div class="line"><a name="l00923"></a><span class="lineno"> 923</span> </div><div class="line"><a name="l00924"></a><span class="lineno"> 924</span>  private:</div><div class="line"><a name="l00925"></a><span class="lineno"> 925</span>  // Invokes the underlying function object __arg by unpacking all</div><div class="line"><a name="l00926"></a><span class="lineno"> 926</span>  // of the arguments in the tuple.</div><div class="line"><a name="l00927"></a><span class="lineno"> 927</span>  template<typename _CVArg, typename... _Args, std::size_t... _Indexes></div><div class="line"><a name="l00928"></a><span class="lineno"> 928</span>  auto</div><div class="line"><a name="l00929"></a><span class="lineno"> 929</span>  __call(_CVArg& __arg, tuple<_Args...>& __tuple,</div><div class="line"><a name="l00930"></a><span class="lineno"> 930</span>  const _Index_tuple<_Indexes...>&) const volatile</div><div class="line"><a name="l00931"></a><span class="lineno"> 931</span>  -> decltype(__arg(declval<_Args>()...))</div><div class="line"><a name="l00932"></a><span class="lineno"> 932</span>  {</div><div class="line"><a name="l00933"></a><span class="lineno"> 933</span>  return __arg(std::forward<_Args>(std::get<_Indexes>(__tuple))...);</div><div class="line"><a name="l00934"></a><span class="lineno"> 934</span>  }</div><div class="line"><a name="l00935"></a><span class="lineno"> 935</span>  };</div><div class="line"><a name="l00936"></a><span class="lineno"> 936</span> </div><div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  /**</div><div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  * If the argument is a placeholder for the Nth argument, returns</div><div class="line"><a name="l00939"></a><span class="lineno"> 939</span>  * a reference to the Nth argument to the bind function object.</div><div class="line"><a name="l00940"></a><span class="lineno"> 940</span>  * [TR1 3.6.3/5 bullet 3]</div><div class="line"><a name="l00941"></a><span class="lineno"> 941</span>  */</div><div class="line"><a name="l00942"></a><span class="lineno"> 942</span>  template<typename _Arg></div><div class="line"><a name="l00943"></a><span class="lineno"> 943</span>  class _Mu<_Arg, false, true></div><div class="line"><a name="l00944"></a><span class="lineno"> 944</span>  {</div><div class="line"><a name="l00945"></a><span class="lineno"> 945</span>  public:</div><div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  template<typename _Signature> class result;</div><div class="line"><a name="l00947"></a><span class="lineno"> 947</span> </div><div class="line"><a name="l00948"></a><span class="lineno"> 948</span>  template<typename _CVMu, typename _CVArg, typename _Tuple></div><div class="line"><a name="l00949"></a><span class="lineno"> 949</span>  class result<_CVMu(_CVArg, _Tuple)></div><div class="line"><a name="l00950"></a><span class="lineno"> 950</span>  {</div><div class="line"><a name="l00951"></a><span class="lineno"> 951</span>  // Add a reference, if it hasn't already been done for us.</div><div class="line"><a name="l00952"></a><span class="lineno"> 952</span>  // This allows us to be a little bit sloppy in constructing</div><div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  // the tuple that we pass to result_of<...>.</div><div class="line"><a name="l00954"></a><span class="lineno"> 954</span>  typedef typename _Safe_tuple_element<(is_placeholder<_Arg>::value</div><div class="line"><a name="l00955"></a><span class="lineno"> 955</span>  - 1), _Tuple>::type</div><div class="line"><a name="l00956"></a><span class="lineno"> 956</span>  __base_type;</div><div class="line"><a name="l00957"></a><span class="lineno"> 957</span> </div><div class="line"><a name="l00958"></a><span class="lineno"> 958</span>  public:</div><div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  typedef typename add_rvalue_reference<__base_type>::type type;</div><div class="line"><a name="l00960"></a><span class="lineno"> 960</span>  };</div><div class="line"><a name="l00961"></a><span class="lineno"> 961</span> </div><div class="line"><a name="l00962"></a><span class="lineno"> 962</span>  template<typename _Tuple></div><div class="line"><a name="l00963"></a><span class="lineno"> 963</span>  typename result<_Mu(_Arg, _Tuple)>::type</div><div class="line"><a name="l00964"></a><span class="lineno"> 964</span>  operator()(const volatile _Arg&, _Tuple& __tuple) const volatile</div><div class="line"><a name="l00965"></a><span class="lineno"> 965</span>  {</div><div class="line"><a name="l00966"></a><span class="lineno"> 966</span>  return std::forward<typename result<_Mu(_Arg, _Tuple)>::type>(</div><div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  ::std::get<(is_placeholder<_Arg>::value - 1)>(__tuple));</div><div class="line"><a name="l00968"></a><span class="lineno"> 968</span>  }</div><div class="line"><a name="l00969"></a><span class="lineno"> 969</span>  };</div><div class="line"><a name="l00970"></a><span class="lineno"> 970</span> </div><div class="line"><a name="l00971"></a><span class="lineno"> 971</span>  /**</div><div class="line"><a name="l00972"></a><span class="lineno"> 972</span>  * If the argument is just a value, returns a reference to that</div><div class="line"><a name="l00973"></a><span class="lineno"> 973</span>  * value. The cv-qualifiers on the reference are the same as the</div><div class="line"><a name="l00974"></a><span class="lineno"> 974</span>  * cv-qualifiers on the _Mu object. [TR1 3.6.3/5 bullet 4]</div><div class="line"><a name="l00975"></a><span class="lineno"> 975</span>  */</div><div class="line"><a name="l00976"></a><span class="lineno"> 976</span>  template<typename _Arg></div><div class="line"><a name="l00977"></a><span class="lineno"> 977</span>  class _Mu<_Arg, false, false></div><div class="line"><a name="l00978"></a><span class="lineno"> 978</span>  {</div><div class="line"><a name="l00979"></a><span class="lineno"> 979</span>  public:</div><div class="line"><a name="l00980"></a><span class="lineno"> 980</span>  template<typename _Signature> struct result;</div><div class="line"><a name="l00981"></a><span class="lineno"> 981</span> </div><div class="line"><a name="l00982"></a><span class="lineno"> 982</span>  template<typename _CVMu, typename _CVArg, typename _Tuple></div><div class="line"><a name="l00983"></a><span class="lineno"> 983</span>  struct result<_CVMu(_CVArg, _Tuple)></div><div class="line"><a name="l00984"></a><span class="lineno"> 984</span>  {</div><div class="line"><a name="l00985"></a><span class="lineno"> 985</span>  typedef typename add_lvalue_reference<_CVArg>::type type;</div><div class="line"><a name="l00986"></a><span class="lineno"> 986</span>  };</div><div class="line"><a name="l00987"></a><span class="lineno"> 987</span> </div><div class="line"><a name="l00988"></a><span class="lineno"> 988</span>  // Pick up the cv-qualifiers of the argument</div><div class="line"><a name="l00989"></a><span class="lineno"> 989</span>  template<typename _CVArg, typename _Tuple></div><div class="line"><a name="l00990"></a><span class="lineno"> 990</span>  _CVArg&&</div><div class="line"><a name="l00991"></a><span class="lineno"> 991</span>  operator()(_CVArg&& __arg, _Tuple&) const volatile</div><div class="line"><a name="l00992"></a><span class="lineno"> 992</span>  { return std::forward<_CVArg>(__arg); }</div><div class="line"><a name="l00993"></a><span class="lineno"> 993</span>  };</div><div class="line"><a name="l00994"></a><span class="lineno"> 994</span> </div><div class="line"><a name="l00995"></a><span class="lineno"> 995</span>  /**</div><div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  * Maps member pointers into instances of _Mem_fn but leaves all</div><div class="line"><a name="l00997"></a><span class="lineno"> 997</span>  * other function objects untouched. Used by std::bind(). The</div><div class="line"><a name="l00998"></a><span class="lineno"> 998</span>  * primary template handles the non-member-pointer case.</div><div class="line"><a name="l00999"></a><span class="lineno"> 999</span>  */</div><div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>  template<typename _Tp></div><div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>  struct _Maybe_wrap_member_pointer</div><div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>  {</div><div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>  typedef _Tp type;</div><div class="line"><a name="l01004"></a><span class="lineno"> 1004</span> </div><div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>  static const _Tp&</div><div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>  __do_wrap(const _Tp& __x)</div><div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>  { return __x; }</div><div class="line"><a name="l01008"></a><span class="lineno"> 1008</span> </div><div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>  static _Tp&&</div><div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>  __do_wrap(_Tp&& __x)</div><div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>  { return static_cast<_Tp&&>(__x); }</div><div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>  };</div><div class="line"><a name="l01013"></a><span class="lineno"> 1013</span> </div><div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>  /**</div><div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>  * Maps member pointers into instances of _Mem_fn but leaves all</div><div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>  * other function objects untouched. Used by std::bind(). This</div><div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>  * partial specialization handles the member pointer case.</div><div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>  */</div><div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>  template<typename _Tp, typename _Class></div><div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>  struct _Maybe_wrap_member_pointer<_Tp _Class::*></div><div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>  {</div><div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>  typedef _Mem_fn<_Tp _Class::*> type;</div><div class="line"><a name="l01023"></a><span class="lineno"> 1023</span> </div><div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>  static type</div><div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>  __do_wrap(_Tp _Class::* __pm)</div><div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>  { return type(__pm); }</div><div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>  };</div><div class="line"><a name="l01028"></a><span class="lineno"> 1028</span> </div><div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  // Specialization needed to prevent "forming reference to void" errors when</div><div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>  // bind<void>() is called, because argument deduction instantiates</div><div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>  // _Maybe_wrap_member_pointer<void> outside the immediate context where</div><div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>  // SFINAE applies.</div><div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  template<></div><div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>  struct _Maybe_wrap_member_pointer<void></div><div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>  {</div><div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>  typedef void type;</div><div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>  };</div><div class="line"><a name="l01038"></a><span class="lineno"> 1038</span> </div><div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>  // std::get<I> for volatile-qualified tuples</div><div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>  template<std::size_t _Ind, typename... _Tp></div><div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>  inline auto</div><div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>  __volget(volatile tuple<_Tp...>& __tuple)</div><div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>  -> __tuple_element_t<_Ind, tuple<_Tp...>> volatile&</div><div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>  { return std::get<_Ind>(const_cast<tuple<_Tp...>&>(__tuple)); }</div><div class="line"><a name="l01045"></a><span class="lineno"> 1045</span> </div><div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>  // std::get<I> for const-volatile-qualified tuples</div><div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>  template<std::size_t _Ind, typename... _Tp></div><div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>  inline auto</div><div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>  __volget(const volatile tuple<_Tp...>& __tuple)</div><div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>  -> __tuple_element_t<_Ind, tuple<_Tp...>> const volatile&</div><div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>  { return std::get<_Ind>(const_cast<const tuple<_Tp...>&>(__tuple)); }</div><div class="line"><a name="l01052"></a><span class="lineno"> 1052</span> </div><div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>  /// Type of the function object returned from bind().</div><div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>  template<typename _Signature></div><div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>  struct _Bind;</div><div class="line"><a name="l01056"></a><span class="lineno"> 1056</span> </div><div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>  template<typename _Functor, typename... _Bound_args></div><div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>  class _Bind<_Functor(_Bound_args...)></div><div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>  : public _Weak_result_type<_Functor></div><div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>  {</div><div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>  typedef _Bind __self_type;</div><div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>  typedef typename _Build_index_tuple<sizeof...(_Bound_args)>::__type</div><div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>  _Bound_indexes;</div><div class="line"><a name="l01064"></a><span class="lineno"> 1064</span> </div><div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>  _Functor _M_f;</div><div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>  tuple<_Bound_args...> _M_bound_args;</div><div class="line"><a name="l01067"></a><span class="lineno"> 1067</span> </div><div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>  // Call unqualified</div><div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>  template<typename _Result, typename... _Args, std::size_t... _Indexes></div><div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>  _Result</div><div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>)</div><div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  {</div><div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>  return _M_f(_Mu<_Bound_args>()</div><div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>  (std::get<_Indexes>(_M_bound_args), __args)...);</div><div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>  }</div><div class="line"><a name="l01076"></a><span class="lineno"> 1076</span> </div><div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>  // Call as const</div><div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>  template<typename _Result, typename... _Args, std::size_t... _Indexes></div><div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  _Result</div><div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>  __call_c(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>) const</div><div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>  {</div><div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>  return _M_f(_Mu<_Bound_args>()</div><div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>  (std::get<_Indexes>(_M_bound_args), __args)...);</div><div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>  }</div><div class="line"><a name="l01085"></a><span class="lineno"> 1085</span> </div><div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>  // Call as volatile</div><div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>  template<typename _Result, typename... _Args, std::size_t... _Indexes></div><div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>  _Result</div><div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>  __call_v(tuple<_Args...>&& __args,</div><div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>  _Index_tuple<_Indexes...>) volatile</div><div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>  {</div><div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>  return _M_f(_Mu<_Bound_args>()</div><div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>  (__volget<_Indexes>(_M_bound_args), __args)...);</div><div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>  }</div><div class="line"><a name="l01095"></a><span class="lineno"> 1095</span> </div><div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>  // Call as const volatile</div><div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>  template<typename _Result, typename... _Args, std::size_t... _Indexes></div><div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>  _Result</div><div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>  __call_c_v(tuple<_Args...>&& __args,</div><div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>  _Index_tuple<_Indexes...>) const volatile</div><div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>  {</div><div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>  return _M_f(_Mu<_Bound_args>()</div><div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>  (__volget<_Indexes>(_M_bound_args), __args)...);</div><div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>  }</div><div class="line"><a name="l01105"></a><span class="lineno"> 1105</span> </div><div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>  public:</div><div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>  template<typename... _Args></div><div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>  explicit _Bind(const _Functor& __f, _Args&&... __args)</div><div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>  : _M_f(__f), _M_bound_args(std::forward<_Args>(__args)...)</div><div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>  { }</div><div class="line"><a name="l01111"></a><span class="lineno"> 1111</span> </div><div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>  template<typename... _Args></div><div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>  explicit _Bind(_Functor&& __f, _Args&&... __args)</div><div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>  : _M_f(std::move(__f)), _M_bound_args(std::forward<_Args>(__args)...)</div><div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>  { }</div><div class="line"><a name="l01116"></a><span class="lineno"> 1116</span> </div><div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>  _Bind(const _Bind&) = default;</div><div class="line"><a name="l01118"></a><span class="lineno"> 1118</span> </div><div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>  _Bind(_Bind&& __b)</div><div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>  : _M_f(std::move(__b._M_f)), _M_bound_args(std::move(__b._M_bound_args))</div><div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>  { }</div><div class="line"><a name="l01122"></a><span class="lineno"> 1122</span> </div><div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>  // Call unqualified</div><div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>  template<typename... _Args, typename _Result</div><div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>  = decltype( std::declval<_Functor&>()(</div><div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>  _Mu<_Bound_args>()( std::declval<_Bound_args&>(),</div><div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>  std::declval<tuple<_Args...>&>() )... ) )></div><div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>  _Result</div><div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>  operator()(_Args&&... __args)</div><div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>  {</div><div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>  return this->__call<_Result>(</div><div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>  std::forward_as_tuple(std::forward<_Args>(__args)...),</div><div class="line"><a name="l01133"></a><span class="lineno"> 1133</span>  _Bound_indexes());</div><div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>  }</div><div class="line"><a name="l01135"></a><span class="lineno"> 1135</span> </div><div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>  // Call as const</div><div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>  template<typename... _Args, typename _Result</div><div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>  = decltype( std::declval<typename enable_if<(sizeof...(_Args) >= 0),</div><div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>  typename add_const<_Functor>::type&>::type>()(</div><div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>  _Mu<_Bound_args>()( std::declval<const _Bound_args&>(),</div><div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>  std::declval<tuple<_Args...>&>() )... ) )></div><div class="line"><a name="l01142"></a><span class="lineno"> 1142</span>  _Result</div><div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>  operator()(_Args&&... __args) const</div><div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>  {</div><div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>  return this->__call_c<_Result>(</div><div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>  std::forward_as_tuple(std::forward<_Args>(__args)...),</div><div class="line"><a name="l01147"></a><span class="lineno"> 1147</span>  _Bound_indexes());</div><div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>  }</div><div class="line"><a name="l01149"></a><span class="lineno"> 1149</span> </div><div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>  // Call as volatile</div><div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>  template<typename... _Args, typename _Result</div><div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>  = decltype( std::declval<typename enable_if<(sizeof...(_Args) >= 0),</div><div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>  typename add_volatile<_Functor>::type&>::type>()(</div><div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>  _Mu<_Bound_args>()( std::declval<volatile _Bound_args&>(),</div><div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>  std::declval<tuple<_Args...>&>() )... ) )></div><div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>  _Result</div><div class="line"><a name="l01157"></a><span class="lineno"> 1157</span>  operator()(_Args&&... __args) volatile</div><div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>  {</div><div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>  return this->__call_v<_Result>(</div><div class="line"><a name="l01160"></a><span class="lineno"> 1160</span>  std::forward_as_tuple(std::forward<_Args>(__args)...),</div><div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>  _Bound_indexes());</div><div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>  }</div><div class="line"><a name="l01163"></a><span class="lineno"> 1163</span> </div><div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>  // Call as const volatile</div><div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>  template<typename... _Args, typename _Result</div><div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>  = decltype( std::declval<typename enable_if<(sizeof...(_Args) >= 0),</div><div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>  typename add_cv<_Functor>::type&>::type>()(</div><div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>  _Mu<_Bound_args>()( std::declval<const volatile _Bound_args&>(),</div><div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>  std::declval<tuple<_Args...>&>() )... ) )></div><div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>  _Result</div><div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>  operator()(_Args&&... __args) const volatile</div><div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>  {</div><div class="line"><a name="l01173"></a><span class="lineno"> 1173</span>  return this->__call_c_v<_Result>(</div><div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>  std::forward_as_tuple(std::forward<_Args>(__args)...),</div><div class="line"><a name="l01175"></a><span class="lineno"> 1175</span>  _Bound_indexes());</div><div class="line"><a name="l01176"></a><span class="lineno"> 1176</span>  }</div><div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>  };</div><div class="line"><a name="l01178"></a><span class="lineno"> 1178</span> </div><div class="line"><a name="l01179"></a><span class="lineno"> 1179</span>  /// Type of the function object returned from bind<R>().</div><div class="line"><a name="l01180"></a><span class="lineno"> 1180</span>  template<typename _Result, typename _Signature></div><div class="line"><a name="l01181"></a><span class="lineno"> 1181</span>  struct _Bind_result;</div><div class="line"><a name="l01182"></a><span class="lineno"> 1182</span> </div><div class="line"><a name="l01183"></a><span class="lineno"> 1183</span>  template<typename _Result, typename _Functor, typename... _Bound_args></div><div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>  class _Bind_result<_Result, _Functor(_Bound_args...)></div><div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>  {</div><div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>  typedef _Bind_result __self_type;</div><div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>  typedef typename _Build_index_tuple<sizeof...(_Bound_args)>::__type</div><div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>  _Bound_indexes;</div><div class="line"><a name="l01189"></a><span class="lineno"> 1189</span> </div><div class="line"><a name="l01190"></a><span class="lineno"> 1190</span>  _Functor _M_f;</div><div class="line"><a name="l01191"></a><span class="lineno"> 1191</span>  tuple<_Bound_args...> _M_bound_args;</div><div class="line"><a name="l01192"></a><span class="lineno"> 1192</span> </div><div class="line"><a name="l01193"></a><span class="lineno"> 1193</span>  // sfinae types</div><div class="line"><a name="l01194"></a><span class="lineno"> 1194</span>  template<typename _Res></div><div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>  struct __enable_if_void : enable_if<is_void<_Res>::value, int> { };</div><div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>  template<typename _Res></div><div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>  struct __disable_if_void : enable_if<!is_void<_Res>::value, int> { };</div><div class="line"><a name="l01198"></a><span class="lineno"> 1198</span> </div><div class="line"><a name="l01199"></a><span class="lineno"> 1199</span>  // Call unqualified</div><div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>  template<typename _Res, typename... _Args, std::size_t... _Indexes></div><div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>  _Result</div><div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>,</div><div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>  typename __disable_if_void<_Res>::type = 0)</div><div class="line"><a name="l01204"></a><span class="lineno"> 1204</span>  {</div><div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>  return _M_f(_Mu<_Bound_args>()</div><div class="line"><a name="l01206"></a><span class="lineno"> 1206</span>  (std::get<_Indexes>(_M_bound_args), __args)...);</div><div class="line"><a name="l01207"></a><span class="lineno"> 1207</span>  }</div><div class="line"><a name="l01208"></a><span class="lineno"> 1208</span> </div><div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>  // Call unqualified, return void</div><div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>  template<typename _Res, typename... _Args, std::size_t... _Indexes></div><div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>  void</div><div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>,</div><div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>  typename __enable_if_void<_Res>::type = 0)</div><div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>  {</div><div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>  _M_f(_Mu<_Bound_args>()</div><div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>  (std::get<_Indexes>(_M_bound_args), __args)...);</div><div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>  }</div><div class="line"><a name="l01218"></a><span class="lineno"> 1218</span> </div><div class="line"><a name="l01219"></a><span class="lineno"> 1219</span>  // Call as const</div><div class="line"><a name="l01220"></a><span class="lineno"> 1220</span>  template<typename _Res, typename... _Args, std::size_t... _Indexes></div><div class="line"><a name="l01221"></a><span class="lineno"> 1221</span>  _Result</div><div class="line"><a name="l01222"></a><span class="lineno"> 1222</span>  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>,</div><div class="line"><a name="l01223"></a><span class="lineno"> 1223</span>  typename __disable_if_void<_Res>::type = 0) const</div><div class="line"><a name="l01224"></a><span class="lineno"> 1224</span>  {</div><div class="line"><a name="l01225"></a><span class="lineno"> 1225</span>  return _M_f(_Mu<_Bound_args>()</div><div class="line"><a name="l01226"></a><span class="lineno"> 1226</span>  (std::get<_Indexes>(_M_bound_args), __args)...);</div><div class="line"><a name="l01227"></a><span class="lineno"> 1227</span>  }</div><div class="line"><a name="l01228"></a><span class="lineno"> 1228</span> </div><div class="line"><a name="l01229"></a><span class="lineno"> 1229</span>  // Call as const, return void</div><div class="line"><a name="l01230"></a><span class="lineno"> 1230</span>  template<typename _Res, typename... _Args, std::size_t... _Indexes></div><div class="line"><a name="l01231"></a><span class="lineno"> 1231</span>  void</div><div class="line"><a name="l01232"></a><span class="lineno"> 1232</span>  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>,</div><div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>  typename __enable_if_void<_Res>::type = 0) const</div><div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>  {</div><div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>  _M_f(_Mu<_Bound_args>()</div><div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>  (std::get<_Indexes>(_M_bound_args), __args)...);</div><div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>  }</div><div class="line"><a name="l01238"></a><span class="lineno"> 1238</span> </div><div class="line"><a name="l01239"></a><span class="lineno"> 1239</span>  // Call as volatile</div><div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>  template<typename _Res, typename... _Args, std::size_t... _Indexes></div><div class="line"><a name="l01241"></a><span class="lineno"> 1241</span>  _Result</div><div class="line"><a name="l01242"></a><span class="lineno"> 1242</span>  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>,</div><div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>  typename __disable_if_void<_Res>::type = 0) volatile</div><div class="line"><a name="l01244"></a><span class="lineno"> 1244</span>  {</div><div class="line"><a name="l01245"></a><span class="lineno"> 1245</span>  return _M_f(_Mu<_Bound_args>()</div><div class="line"><a name="l01246"></a><span class="lineno"> 1246</span>  (__volget<_Indexes>(_M_bound_args), __args)...);</div><div class="line"><a name="l01247"></a><span class="lineno"> 1247</span>  }</div><div class="line"><a name="l01248"></a><span class="lineno"> 1248</span> </div><div class="line"><a name="l01249"></a><span class="lineno"> 1249</span>  // Call as volatile, return void</div><div class="line"><a name="l01250"></a><span class="lineno"> 1250</span>  template<typename _Res, typename... _Args, std::size_t... _Indexes></div><div class="line"><a name="l01251"></a><span class="lineno"> 1251</span>  void</div><div class="line"><a name="l01252"></a><span class="lineno"> 1252</span>  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>,</div><div class="line"><a name="l01253"></a><span class="lineno"> 1253</span>  typename __enable_if_void<_Res>::type = 0) volatile</div><div class="line"><a name="l01254"></a><span class="lineno"> 1254</span>  {</div><div class="line"><a name="l01255"></a><span class="lineno"> 1255</span>  _M_f(_Mu<_Bound_args>()</div><div class="line"><a name="l01256"></a><span class="lineno"> 1256</span>  (__volget<_Indexes>(_M_bound_args), __args)...);</div><div class="line"><a name="l01257"></a><span class="lineno"> 1257</span>  }</div><div class="line"><a name="l01258"></a><span class="lineno"> 1258</span> </div><div class="line"><a name="l01259"></a><span class="lineno"> 1259</span>  // Call as const volatile</div><div class="line"><a name="l01260"></a><span class="lineno"> 1260</span>  template<typename _Res, typename... _Args, std::size_t... _Indexes></div><div class="line"><a name="l01261"></a><span class="lineno"> 1261</span>  _Result</div><div class="line"><a name="l01262"></a><span class="lineno"> 1262</span>  __call(tuple<_Args...>&& __args, _Index_tuple<_Indexes...>,</div><div class="line"><a name="l01263"></a><span class="lineno"> 1263</span>  typename __disable_if_void<_Res>::type = 0) const volatile</div><div class="line"><a name="l01264"></a><span class="lineno"> 1264</span>  {</div><div class="line"><a name="l01265"></a><span class="lineno"> 1265</span>  return _M_f(_Mu<_Bound_args>()</div><div class="line"><a name="l01266"></a><span class="lineno"> 1266</span>  (__volget<_Indexes>(_M_bound_args), __args)...);</div><div class="line"><a name="l01267"></a><span class="lineno"> 1267</span>  }</div><div class="line"><a name="l01268"></a><span class="lineno"> 1268</span> </div><div class="line"><a name="l01269"></a><span class="lineno"> 1269</span>  // Call as const volatile, return void</div><div class="line"><a name="l01270"></a><span class="lineno"> 1270</span>  template<typename _Res, typename... _Args, std::size_t... _Indexes></div><div class="line"><a name="l01271"></a><span class="lineno"> 1271</span>  void</div><div class="line"><a name="l01272"></a><span class="lineno"> 1272</span>  __call(tuple<_Args...>&& __args,</div><div class="line"><a name="l01273"></a><span class="lineno"> 1273</span>  _Index_tuple<_Indexes...>,</div><div class="line"><a name="l01274"></a><span class="lineno"> 1274</span>  typename __enable_if_void<_Res>::type = 0) const volatile</div><div class="line"><a name="l01275"></a><span class="lineno"> 1275</span>  {</div><div class="line"><a name="l01276"></a><span class="lineno"> 1276</span>  _M_f(_Mu<_Bound_args>()</div><div class="line"><a name="l01277"></a><span class="lineno"> 1277</span>  (__volget<_Indexes>(_M_bound_args), __args)...);</div><div class="line"><a name="l01278"></a><span class="lineno"> 1278</span>  }</div><div class="line"><a name="l01279"></a><span class="lineno"> 1279</span> </div><div class="line"><a name="l01280"></a><span class="lineno"> 1280</span>  public:</div><div class="line"><a name="l01281"></a><span class="lineno"> 1281</span>  typedef _Result result_type;</div><div class="line"><a name="l01282"></a><span class="lineno"> 1282</span> </div><div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>  template<typename... _Args></div><div class="line"><a name="l01284"></a><span class="lineno"> 1284</span>  explicit _Bind_result(const _Functor& __f, _Args&&... __args)</div><div class="line"><a name="l01285"></a><span class="lineno"> 1285</span>  : _M_f(__f), _M_bound_args(std::forward<_Args>(__args)...)</div><div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>  { }</div><div class="line"><a name="l01287"></a><span class="lineno"> 1287</span> </div><div class="line"><a name="l01288"></a><span class="lineno"> 1288</span>  template<typename... _Args></div><div class="line"><a name="l01289"></a><span class="lineno"> 1289</span>  explicit _Bind_result(_Functor&& __f, _Args&&... __args)</div><div class="line"><a name="l01290"></a><span class="lineno"> 1290</span>  : _M_f(std::move(__f)), _M_bound_args(std::forward<_Args>(__args)...)</div><div class="line"><a name="l01291"></a><span class="lineno"> 1291</span>  { }</div><div class="line"><a name="l01292"></a><span class="lineno"> 1292</span> </div><div class="line"><a name="l01293"></a><span class="lineno"> 1293</span>  _Bind_result(const _Bind_result&) = default;</div><div class="line"><a name="l01294"></a><span class="lineno"> 1294</span> </div><div class="line"><a name="l01295"></a><span class="lineno"> 1295</span>  _Bind_result(_Bind_result&& __b)</div><div class="line"><a name="l01296"></a><span class="lineno"> 1296</span>  : _M_f(std::move(__b._M_f)), _M_bound_args(std::move(__b._M_bound_args))</div><div class="line"><a name="l01297"></a><span class="lineno"> 1297</span>  { }</div><div class="line"><a name="l01298"></a><span class="lineno"> 1298</span> </div><div class="line"><a name="l01299"></a><span class="lineno"> 1299</span>  // Call unqualified</div><div class="line"><a name="l01300"></a><span class="lineno"> 1300</span>  template<typename... _Args></div><div class="line"><a name="l01301"></a><span class="lineno"> 1301</span>  result_type</div><div class="line"><a name="l01302"></a><span class="lineno"> 1302</span>  operator()(_Args&&... __args)</div><div class="line"><a name="l01303"></a><span class="lineno"> 1303</span>  {</div><div class="line"><a name="l01304"></a><span class="lineno"> 1304</span>  return this->__call<_Result>(</div><div class="line"><a name="l01305"></a><span class="lineno"> 1305</span>  std::forward_as_tuple(std::forward<_Args>(__args)...),</div><div class="line"><a name="l01306"></a><span class="lineno"> 1306</span>  _Bound_indexes());</div><div class="line"><a name="l01307"></a><span class="lineno"> 1307</span>  }</div><div class="line"><a name="l01308"></a><span class="lineno"> 1308</span> </div><div class="line"><a name="l01309"></a><span class="lineno"> 1309</span>  // Call as const</div><div class="line"><a name="l01310"></a><span class="lineno"> 1310</span>  template<typename... _Args></div><div class="line"><a name="l01311"></a><span class="lineno"> 1311</span>  result_type</div><div class="line"><a name="l01312"></a><span class="lineno"> 1312</span>  operator()(_Args&&... __args) const</div><div class="line"><a name="l01313"></a><span class="lineno"> 1313</span>  {</div><div class="line"><a name="l01314"></a><span class="lineno"> 1314</span>  return this->__call<_Result>(</div><div class="line"><a name="l01315"></a><span class="lineno"> 1315</span>  std::forward_as_tuple(std::forward<_Args>(__args)...),</div><div class="line"><a name="l01316"></a><span class="lineno"> 1316</span>  _Bound_indexes());</div><div class="line"><a name="l01317"></a><span class="lineno"> 1317</span>  }</div><div class="line"><a name="l01318"></a><span class="lineno"> 1318</span> </div><div class="line"><a name="l01319"></a><span class="lineno"> 1319</span>  // Call as volatile</div><div class="line"><a name="l01320"></a><span class="lineno"> 1320</span>  template<typename... _Args></div><div class="line"><a name="l01321"></a><span class="lineno"> 1321</span>  result_type</div><div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>  operator()(_Args&&... __args) volatile</div><div class="line"><a name="l01323"></a><span class="lineno"> 1323</span>  {</div><div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>  return this->__call<_Result>(</div><div class="line"><a name="l01325"></a><span class="lineno"> 1325</span>  std::forward_as_tuple(std::forward<_Args>(__args)...),</div><div class="line"><a name="l01326"></a><span class="lineno"> 1326</span>  _Bound_indexes());</div><div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>  }</div><div class="line"><a name="l01328"></a><span class="lineno"> 1328</span> </div><div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>  // Call as const volatile</div><div class="line"><a name="l01330"></a><span class="lineno"> 1330</span>  template<typename... _Args></div><div class="line"><a name="l01331"></a><span class="lineno"> 1331</span>  result_type</div><div class="line"><a name="l01332"></a><span class="lineno"> 1332</span>  operator()(_Args&&... __args) const volatile</div><div class="line"><a name="l01333"></a><span class="lineno"> 1333</span>  {</div><div class="line"><a name="l01334"></a><span class="lineno"> 1334</span>  return this->__call<_Result>(</div><div class="line"><a name="l01335"></a><span class="lineno"> 1335</span>  std::forward_as_tuple(std::forward<_Args>(__args)...),</div><div class="line"><a name="l01336"></a><span class="lineno"> 1336</span>  _Bound_indexes());</div><div class="line"><a name="l01337"></a><span class="lineno"> 1337</span>  }</div><div class="line"><a name="l01338"></a><span class="lineno"> 1338</span>  };</div><div class="line"><a name="l01339"></a><span class="lineno"> 1339</span> </div><div class="line"><a name="l01340"></a><span class="lineno"> 1340</span>  /**</div><div class="line"><a name="l01341"></a><span class="lineno"> 1341</span>  * @brief Class template _Bind is always a bind expression.</div><div class="line"><a name="l01342"></a><span class="lineno"> 1342</span>  * @ingroup binders</div><div class="line"><a name="l01343"></a><span class="lineno"> 1343</span>  */</div><div class="line"><a name="l01344"></a><span class="lineno"> 1344</span>  template<typename _Signature></div><div class="line"><a name="l01345"></a><span class="lineno"> 1345</span>  struct is_bind_expression<_Bind<_Signature> ></div><div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>  : public true_type { };</div><div class="line"><a name="l01347"></a><span class="lineno"> 1347</span> </div><div class="line"><a name="l01348"></a><span class="lineno"> 1348</span>  /**</div><div class="line"><a name="l01349"></a><span class="lineno"> 1349</span>  * @brief Class template _Bind is always a bind expression.</div><div class="line"><a name="l01350"></a><span class="lineno"> 1350</span>  * @ingroup binders</div><div class="line"><a name="l01351"></a><span class="lineno"> 1351</span>  */</div><div class="line"><a name="l01352"></a><span class="lineno"> 1352</span>  template<typename _Signature></div><div class="line"><a name="l01353"></a><span class="lineno"> 1353</span>  struct is_bind_expression<const _Bind<_Signature> ></div><div class="line"><a name="l01354"></a><span class="lineno"> 1354</span>  : public true_type { };</div><div class="line"><a name="l01355"></a><span class="lineno"> 1355</span> </div><div class="line"><a name="l01356"></a><span class="lineno"> 1356</span>  /**</div><div class="line"><a name="l01357"></a><span class="lineno"> 1357</span>  * @brief Class template _Bind is always a bind expression.</div><div class="line"><a name="l01358"></a><span class="lineno"> 1358</span>  * @ingroup binders</div><div class="line"><a name="l01359"></a><span class="lineno"> 1359</span>  */</div><div class="line"><a name="l01360"></a><span class="lineno"> 1360</span>  template<typename _Signature></div><div class="line"><a name="l01361"></a><span class="lineno"> 1361</span>  struct is_bind_expression<volatile _Bind<_Signature> ></div><div class="line"><a name="l01362"></a><span class="lineno"> 1362</span>  : public true_type { };</div><div class="line"><a name="l01363"></a><span class="lineno"> 1363</span> </div><div class="line"><a name="l01364"></a><span class="lineno"> 1364</span>  /**</div><div class="line"><a name="l01365"></a><span class="lineno"> 1365</span>  * @brief Class template _Bind is always a bind expression.</div><div class="line"><a name="l01366"></a><span class="lineno"> 1366</span>  * @ingroup binders</div><div class="line"><a name="l01367"></a><span class="lineno"> 1367</span>  */</div><div class="line"><a name="l01368"></a><span class="lineno"> 1368</span>  template<typename _Signature></div><div class="line"><a name="l01369"></a><span class="lineno"> 1369</span>  struct is_bind_expression<const volatile _Bind<_Signature>></div><div class="line"><a name="l01370"></a><span class="lineno"> 1370</span>  : public true_type { };</div><div class="line"><a name="l01371"></a><span class="lineno"> 1371</span> </div><div class="line"><a name="l01372"></a><span class="lineno"> 1372</span>  /**</div><div class="line"><a name="l01373"></a><span class="lineno"> 1373</span>  * @brief Class template _Bind_result is always a bind expression.</div><div class="line"><a name="l01374"></a><span class="lineno"> 1374</span>  * @ingroup binders</div><div class="line"><a name="l01375"></a><span class="lineno"> 1375</span>  */</div><div class="line"><a name="l01376"></a><span class="lineno"> 1376</span>  template<typename _Result, typename _Signature></div><div class="line"><a name="l01377"></a><span class="lineno"> 1377</span>  struct is_bind_expression<_Bind_result<_Result, _Signature>></div><div class="line"><a name="l01378"></a><span class="lineno"> 1378</span>  : public true_type { };</div><div class="line"><a name="l01379"></a><span class="lineno"> 1379</span> </div><div class="line"><a name="l01380"></a><span class="lineno"> 1380</span>  /**</div><div class="line"><a name="l01381"></a><span class="lineno"> 1381</span>  * @brief Class template _Bind_result is always a bind expression.</div><div class="line"><a name="l01382"></a><span class="lineno"> 1382</span>  * @ingroup binders</div><div class="line"><a name="l01383"></a><span class="lineno"> 1383</span>  */</div><div class="line"><a name="l01384"></a><span class="lineno"> 1384</span>  template<typename _Result, typename _Signature></div><div class="line"><a name="l01385"></a><span class="lineno"> 1385</span>  struct is_bind_expression<const _Bind_result<_Result, _Signature>></div><div class="line"><a name="l01386"></a><span class="lineno"> 1386</span>  : public true_type { };</div><div class="line"><a name="l01387"></a><span class="lineno"> 1387</span> </div><div class="line"><a name="l01388"></a><span class="lineno"> 1388</span>  /**</div><div class="line"><a name="l01389"></a><span class="lineno"> 1389</span>  * @brief Class template _Bind_result is always a bind expression.</div><div class="line"><a name="l01390"></a><span class="lineno"> 1390</span>  * @ingroup binders</div><div class="line"><a name="l01391"></a><span class="lineno"> 1391</span>  */</div><div class="line"><a name="l01392"></a><span class="lineno"> 1392</span>  template<typename _Result, typename _Signature></div><div class="line"><a name="l01393"></a><span class="lineno"> 1393</span>  struct is_bind_expression<volatile _Bind_result<_Result, _Signature>></div><div class="line"><a name="l01394"></a><span class="lineno"> 1394</span>  : public true_type { };</div><div class="line"><a name="l01395"></a><span class="lineno"> 1395</span> </div><div class="line"><a name="l01396"></a><span class="lineno"> 1396</span>  /**</div><div class="line"><a name="l01397"></a><span class="lineno"> 1397</span>  * @brief Class template _Bind_result is always a bind expression.</div><div class="line"><a name="l01398"></a><span class="lineno"> 1398</span>  * @ingroup binders</div><div class="line"><a name="l01399"></a><span class="lineno"> 1399</span>  */</div><div class="line"><a name="l01400"></a><span class="lineno"> 1400</span>  template<typename _Result, typename _Signature></div><div class="line"><a name="l01401"></a><span class="lineno"> 1401</span>  struct is_bind_expression<const volatile _Bind_result<_Result, _Signature>></div><div class="line"><a name="l01402"></a><span class="lineno"> 1402</span>  : public true_type { };</div><div class="line"><a name="l01403"></a><span class="lineno"> 1403</span> </div><div class="line"><a name="l01404"></a><span class="lineno"> 1404</span>  template<typename _Func, typename... _BoundArgs></div><div class="line"><a name="l01405"></a><span class="lineno"> 1405</span>  struct _Bind_check_arity { };</div><div class="line"><a name="l01406"></a><span class="lineno"> 1406</span> </div><div class="line"><a name="l01407"></a><span class="lineno"> 1407</span>  template<typename _Ret, typename... _Args, typename... _BoundArgs></div><div class="line"><a name="l01408"></a><span class="lineno"> 1408</span>  struct _Bind_check_arity<_Ret (*)(_Args...), _BoundArgs...></div><div class="line"><a name="l01409"></a><span class="lineno"> 1409</span>  {</div><div class="line"><a name="l01410"></a><span class="lineno"> 1410</span>  static_assert(sizeof...(_BoundArgs) == sizeof...(_Args),</div><div class="line"><a name="l01411"></a><span class="lineno"> 1411</span>  "Wrong number of arguments for function");</div><div class="line"><a name="l01412"></a><span class="lineno"> 1412</span>  };</div><div class="line"><a name="l01413"></a><span class="lineno"> 1413</span> </div><div class="line"><a name="l01414"></a><span class="lineno"> 1414</span>  template<typename _Ret, typename... _Args, typename... _BoundArgs></div><div class="line"><a name="l01415"></a><span class="lineno"> 1415</span>  struct _Bind_check_arity<_Ret (*)(_Args......), _BoundArgs...></div><div class="line"><a name="l01416"></a><span class="lineno"> 1416</span>  {</div><div class="line"><a name="l01417"></a><span class="lineno"> 1417</span>  static_assert(sizeof...(_BoundArgs) >= sizeof...(_Args),</div><div class="line"><a name="l01418"></a><span class="lineno"> 1418</span>  "Wrong number of arguments for function");</div><div class="line"><a name="l01419"></a><span class="lineno"> 1419</span>  };</div><div class="line"><a name="l01420"></a><span class="lineno"> 1420</span> </div><div class="line"><a name="l01421"></a><span class="lineno"> 1421</span>  template<typename _Tp, typename _Class, typename... _BoundArgs></div><div class="line"><a name="l01422"></a><span class="lineno"> 1422</span>  struct _Bind_check_arity<_Tp _Class::*, _BoundArgs...></div><div class="line"><a name="l01423"></a><span class="lineno"> 1423</span>  {</div><div class="line"><a name="l01424"></a><span class="lineno"> 1424</span>  using _Arity = typename _Mem_fn<_Tp _Class::*>::_Arity;</div><div class="line"><a name="l01425"></a><span class="lineno"> 1425</span>  using _Varargs = typename _Mem_fn<_Tp _Class::*>::_Varargs;</div><div class="line"><a name="l01426"></a><span class="lineno"> 1426</span>  static_assert(_Varargs::value</div><div class="line"><a name="l01427"></a><span class="lineno"> 1427</span>  ? sizeof...(_BoundArgs) >= _Arity::value + 1</div><div class="line"><a name="l01428"></a><span class="lineno"> 1428</span>  : sizeof...(_BoundArgs) == _Arity::value + 1,</div><div class="line"><a name="l01429"></a><span class="lineno"> 1429</span>  "Wrong number of arguments for pointer-to-member");</div><div class="line"><a name="l01430"></a><span class="lineno"> 1430</span>  };</div><div class="line"><a name="l01431"></a><span class="lineno"> 1431</span> </div><div class="line"><a name="l01432"></a><span class="lineno"> 1432</span>  // Trait type used to remove std::bind() from overload set via SFINAE</div><div class="line"><a name="l01433"></a><span class="lineno"> 1433</span>  // when first argument has integer type, so that std::bind() will</div><div class="line"><a name="l01434"></a><span class="lineno"> 1434</span>  // not be a better match than ::bind() from the BSD Sockets API.</div><div class="line"><a name="l01435"></a><span class="lineno"> 1435</span>  template<typename _Tp, typename _Tp2 = typename decay<_Tp>::type></div><div class="line"><a name="l01436"></a><span class="lineno"> 1436</span>  using __is_socketlike = __or_<is_integral<_Tp2>, is_enum<_Tp2>>;</div><div class="line"><a name="l01437"></a><span class="lineno"> 1437</span> </div><div class="line"><a name="l01438"></a><span class="lineno"> 1438</span>  template<bool _SocketLike, typename _Func, typename... _BoundArgs></div><div class="line"><a name="l01439"></a><span class="lineno"> 1439</span>  struct _Bind_helper</div><div class="line"><a name="l01440"></a><span class="lineno"> 1440</span>  : _Bind_check_arity<typename decay<_Func>::type, _BoundArgs...></div><div class="line"><a name="l01441"></a><span class="lineno"> 1441</span>  {</div><div class="line"><a name="l01442"></a><span class="lineno"> 1442</span>  typedef _Maybe_wrap_member_pointer<typename decay<_Func>::type></div><div class="line"><a name="l01443"></a><span class="lineno"> 1443</span>  __maybe_type;</div><div class="line"><a name="l01444"></a><span class="lineno"> 1444</span>  typedef typename __maybe_type::type __func_type;</div><div class="line"><a name="l01445"></a><span class="lineno"> 1445</span>  typedef _Bind<__func_type(typename decay<_BoundArgs>::type...)> type;</div><div class="line"><a name="l01446"></a><span class="lineno"> 1446</span>  };</div><div class="line"><a name="l01447"></a><span class="lineno"> 1447</span> </div><div class="line"><a name="l01448"></a><span class="lineno"> 1448</span>  // Partial specialization for is_socketlike == true, does not define</div><div class="line"><a name="l01449"></a><span class="lineno"> 1449</span>  // nested type so std::bind() will not participate in overload resolution</div><div class="line"><a name="l01450"></a><span class="lineno"> 1450</span>  // when the first argument might be a socket file descriptor.</div><div class="line"><a name="l01451"></a><span class="lineno"> 1451</span>  template<typename _Func, typename... _BoundArgs></div><div class="line"><a name="l01452"></a><span class="lineno"> 1452</span>  struct _Bind_helper<true, _Func, _BoundArgs...></div><div class="line"><a name="l01453"></a><span class="lineno"> 1453</span>  { };</div><div class="line"><a name="l01454"></a><span class="lineno"> 1454</span> </div><div class="line"><a name="l01455"></a><span class="lineno"> 1455</span>  /**</div><div class="line"><a name="l01456"></a><span class="lineno"> 1456</span>  * @brief Function template for std::bind.</div><div class="line"><a name="l01457"></a><span class="lineno"> 1457</span>  * @ingroup binders</div><div class="line"><a name="l01458"></a><span class="lineno"> 1458</span>  */</div><div class="line"><a name="l01459"></a><span class="lineno"> 1459</span>  template<typename _Func, typename... _BoundArgs></div><div class="line"><a name="l01460"></a><span class="lineno"> 1460</span>  inline typename</div><div class="line"><a name="l01461"></a><span class="lineno"> 1461</span>  _Bind_helper<__is_socketlike<_Func>::value, _Func, _BoundArgs...>::type</div><div class="line"><a name="l01462"></a><span class="lineno"> 1462</span>  bind(_Func&& __f, _BoundArgs&&... __args)</div><div class="line"><a name="l01463"></a><span class="lineno"> 1463</span>  {</div><div class="line"><a name="l01464"></a><span class="lineno"> 1464</span>  typedef _Bind_helper<false, _Func, _BoundArgs...> __helper_type;</div><div class="line"><a name="l01465"></a><span class="lineno"> 1465</span>  typedef typename __helper_type::__maybe_type __maybe_type;</div><div class="line"><a name="l01466"></a><span class="lineno"> 1466</span>  typedef typename __helper_type::type __result_type;</div><div class="line"><a name="l01467"></a><span class="lineno"> 1467</span>  return __result_type(__maybe_type::__do_wrap(std::forward<_Func>(__f)),</div><div class="line"><a name="l01468"></a><span class="lineno"> 1468</span>  std::forward<_BoundArgs>(__args)...);</div><div class="line"><a name="l01469"></a><span class="lineno"> 1469</span>  }</div><div class="line"><a name="l01470"></a><span class="lineno"> 1470</span> </div><div class="line"><a name="l01471"></a><span class="lineno"> 1471</span>  template<typename _Result, typename _Func, typename... _BoundArgs></div><div class="line"><a name="l01472"></a><span class="lineno"> 1472</span>  struct _Bindres_helper</div><div class="line"><a name="l01473"></a><span class="lineno"> 1473</span>  : _Bind_check_arity<typename decay<_Func>::type, _BoundArgs...></div><div class="line"><a name="l01474"></a><span class="lineno"> 1474</span>  {</div><div class="line"><a name="l01475"></a><span class="lineno"> 1475</span>  typedef _Maybe_wrap_member_pointer<typename decay<_Func>::type></div><div class="line"><a name="l01476"></a><span class="lineno"> 1476</span>  __maybe_type;</div><div class="line"><a name="l01477"></a><span class="lineno"> 1477</span>  typedef typename __maybe_type::type __functor_type;</div><div class="line"><a name="l01478"></a><span class="lineno"> 1478</span>  typedef _Bind_result<_Result,</div><div class="line"><a name="l01479"></a><span class="lineno"> 1479</span>  __functor_type(typename decay<_BoundArgs>::type...)></div><div class="line"><a name="l01480"></a><span class="lineno"> 1480</span>  type;</div><div class="line"><a name="l01481"></a><span class="lineno"> 1481</span>  };</div><div class="line"><a name="l01482"></a><span class="lineno"> 1482</span> </div><div class="line"><a name="l01483"></a><span class="lineno"> 1483</span>  /**</div><div class="line"><a name="l01484"></a><span class="lineno"> 1484</span>  * @brief Function template for std::bind<R>.</div><div class="line"><a name="l01485"></a><span class="lineno"> 1485</span>  * @ingroup binders</div><div class="line"><a name="l01486"></a><span class="lineno"> 1486</span>  */</div><div class="line"><a name="l01487"></a><span class="lineno"> 1487</span>  template<typename _Result, typename _Func, typename... _BoundArgs></div><div class="line"><a name="l01488"></a><span class="lineno"> 1488</span>  inline</div><div class="line"><a name="l01489"></a><span class="lineno"> 1489</span>  typename _Bindres_helper<_Result, _Func, _BoundArgs...>::type</div><div class="line"><a name="l01490"></a><span class="lineno"> 1490</span>  bind(_Func&& __f, _BoundArgs&&... __args)</div><div class="line"><a name="l01491"></a><span class="lineno"> 1491</span>  {</div><div class="line"><a name="l01492"></a><span class="lineno"> 1492</span>  typedef _Bindres_helper<_Result, _Func, _BoundArgs...> __helper_type;</div><div class="line"><a name="l01493"></a><span class="lineno"> 1493</span>  typedef typename __helper_type::__maybe_type __maybe_type;</div><div class="line"><a name="l01494"></a><span class="lineno"> 1494</span>  typedef typename __helper_type::type __result_type;</div><div class="line"><a name="l01495"></a><span class="lineno"> 1495</span>  return __result_type(__maybe_type::__do_wrap(std::forward<_Func>(__f)),</div><div class="line"><a name="l01496"></a><span class="lineno"> 1496</span>  std::forward<_BoundArgs>(__args)...);</div><div class="line"><a name="l01497"></a><span class="lineno"> 1497</span>  }</div><div class="line"><a name="l01498"></a><span class="lineno"> 1498</span> </div><div class="line"><a name="l01499"></a><span class="lineno"> 1499</span>  template<typename _Signature></div><div class="line"><a name="l01500"></a><span class="lineno"> 1500</span>  struct _Bind_simple;</div><div class="line"><a name="l01501"></a><span class="lineno"> 1501</span> </div><div class="line"><a name="l01502"></a><span class="lineno"> 1502</span>  template<typename _Callable, typename... _Args></div><div class="line"><a name="l01503"></a><span class="lineno"> 1503</span>  struct _Bind_simple<_Callable(_Args...)></div><div class="line"><a name="l01504"></a><span class="lineno"> 1504</span>  {</div><div class="line"><a name="l01505"></a><span class="lineno"> 1505</span>  typedef typename result_of<_Callable(_Args...)>::type result_type;</div><div class="line"><a name="l01506"></a><span class="lineno"> 1506</span> </div><div class="line"><a name="l01507"></a><span class="lineno"> 1507</span>  template<typename _Tp, typename... _Up></div><div class="line"><a name="l01508"></a><span class="lineno"> 1508</span>  explicit</div><div class="line"><a name="l01509"></a><span class="lineno"> 1509</span>  _Bind_simple(_Tp&& __f, _Up&&... __args)</div><div class="line"><a name="l01510"></a><span class="lineno"> 1510</span>  : _M_bound(std::forward<_Tp>(__f), std::forward<_Up>(__args)...)</div><div class="line"><a name="l01511"></a><span class="lineno"> 1511</span>  { }</div><div class="line"><a name="l01512"></a><span class="lineno"> 1512</span> </div><div class="line"><a name="l01513"></a><span class="lineno"> 1513</span>  _Bind_simple(const _Bind_simple&) = default;</div><div class="line"><a name="l01514"></a><span class="lineno"> 1514</span>  _Bind_simple(_Bind_simple&&) = default;</div><div class="line"><a name="l01515"></a><span class="lineno"> 1515</span> </div><div class="line"><a name="l01516"></a><span class="lineno"> 1516</span>  result_type</div><div class="line"><a name="l01517"></a><span class="lineno"> 1517</span>  operator()()</div><div class="line"><a name="l01518"></a><span class="lineno"> 1518</span>  {</div><div class="line"><a name="l01519"></a><span class="lineno"> 1519</span>  typedef typename _Build_index_tuple<sizeof...(_Args)>::__type _Indices;</div><div class="line"><a name="l01520"></a><span class="lineno"> 1520</span>  return _M_invoke(_Indices());</div><div class="line"><a name="l01521"></a><span class="lineno"> 1521</span>  }</div><div class="line"><a name="l01522"></a><span class="lineno"> 1522</span> </div><div class="line"><a name="l01523"></a><span class="lineno"> 1523</span>  private:</div><div class="line"><a name="l01524"></a><span class="lineno"> 1524</span>  template<std::size_t... _Indices></div><div class="line"><a name="l01525"></a><span class="lineno"> 1525</span>  typename result_of<_Callable(_Args...)>::type</div><div class="line"><a name="l01526"></a><span class="lineno"> 1526</span>  _M_invoke(_Index_tuple<_Indices...>)</div><div class="line"><a name="l01527"></a><span class="lineno"> 1527</span>  {</div><div class="line"><a name="l01528"></a><span class="lineno"> 1528</span>  // std::bind always forwards bound arguments as lvalues,</div><div class="line"><a name="l01529"></a><span class="lineno"> 1529</span>  // but this type can call functions which only accept rvalues.</div><div class="line"><a name="l01530"></a><span class="lineno"> 1530</span>  return std::forward<_Callable>(std::get<0>(_M_bound))(</div><div class="line"><a name="l01531"></a><span class="lineno"> 1531</span>  std::forward<_Args>(std::get<_Indices+1>(_M_bound))...);</div><div class="line"><a name="l01532"></a><span class="lineno"> 1532</span>  }</div><div class="line"><a name="l01533"></a><span class="lineno"> 1533</span> </div><div class="line"><a name="l01534"></a><span class="lineno"> 1534</span>  std::tuple<_Callable, _Args...> _M_bound;</div><div class="line"><a name="l01535"></a><span class="lineno"> 1535</span>  };</div><div class="line"><a name="l01536"></a><span class="lineno"> 1536</span> </div><div class="line"><a name="l01537"></a><span class="lineno"> 1537</span>  template<typename _Func, typename... _BoundArgs></div><div class="line"><a name="l01538"></a><span class="lineno"> 1538</span>  struct _Bind_simple_helper</div><div class="line"><a name="l01539"></a><span class="lineno"> 1539</span>  : _Bind_check_arity<typename decay<_Func>::type, _BoundArgs...></div><div class="line"><a name="l01540"></a><span class="lineno"> 1540</span>  {</div><div class="line"><a name="l01541"></a><span class="lineno"> 1541</span>  typedef _Maybe_wrap_member_pointer<typename decay<_Func>::type></div><div class="line"><a name="l01542"></a><span class="lineno"> 1542</span>  __maybe_type;</div><div class="line"><a name="l01543"></a><span class="lineno"> 1543</span>  typedef typename __maybe_type::type __func_type;</div><div class="line"><a name="l01544"></a><span class="lineno"> 1544</span>  typedef _Bind_simple<__func_type(typename decay<_BoundArgs>::type...)></div><div class="line"><a name="l01545"></a><span class="lineno"> 1545</span>  __type;</div><div class="line"><a name="l01546"></a><span class="lineno"> 1546</span>  };</div><div class="line"><a name="l01547"></a><span class="lineno"> 1547</span> </div><div class="line"><a name="l01548"></a><span class="lineno"> 1548</span>  // Simplified version of std::bind for internal use, without support for</div><div class="line"><a name="l01549"></a><span class="lineno"> 1549</span>  // unbound arguments, placeholders or nested bind expressions.</div><div class="line"><a name="l01550"></a><span class="lineno"> 1550</span>  template<typename _Callable, typename... _Args></div><div class="line"><a name="l01551"></a><span class="lineno"> 1551</span>  typename _Bind_simple_helper<_Callable, _Args...>::__type</div><div class="line"><a name="l01552"></a><span class="lineno"> 1552</span>  __bind_simple(_Callable&& __callable, _Args&&... __args)</div><div class="line"><a name="l01553"></a><span class="lineno"> 1553</span>  {</div><div class="line"><a name="l01554"></a><span class="lineno"> 1554</span>  typedef _Bind_simple_helper<_Callable, _Args...> __helper_type;</div><div class="line"><a name="l01555"></a><span class="lineno"> 1555</span>  typedef typename __helper_type::__maybe_type __maybe_type;</div><div class="line"><a name="l01556"></a><span class="lineno"> 1556</span>  typedef typename __helper_type::__type __result_type;</div><div class="line"><a name="l01557"></a><span class="lineno"> 1557</span>  return __result_type(</div><div class="line"><a name="l01558"></a><span class="lineno"> 1558</span>  __maybe_type::__do_wrap( std::forward<_Callable>(__callable)),</div><div class="line"><a name="l01559"></a><span class="lineno"> 1559</span>  std::forward<_Args>(__args)...);</div><div class="line"><a name="l01560"></a><span class="lineno"> 1560</span>  }</div><div class="line"><a name="l01561"></a><span class="lineno"> 1561</span> </div><div class="line"><a name="l01562"></a><span class="lineno"> 1562</span>  /**</div><div class="line"><a name="l01563"></a><span class="lineno"> 1563</span>  * @brief Exception class thrown when class template function's</div><div class="line"><a name="l01564"></a><span class="lineno"> 1564</span>  * operator() is called with an empty target.</div><div class="line"><a name="l01565"></a><span class="lineno"> 1565</span>  * @ingroup exceptions</div><div class="line"><a name="l01566"></a><span class="lineno"> 1566</span>  */</div><div class="line"><a name="l01567"></a><span class="lineno"> 1567</span>  class bad_function_call : public std::exception</div><div class="line"><a name="l01568"></a><span class="lineno"> 1568</span>  {</div><div class="line"><a name="l01569"></a><span class="lineno"> 1569</span>  public:</div><div class="line"><a name="l01570"></a><span class="lineno"> 1570</span>  virtual ~bad_function_call() noexcept;</div><div class="line"><a name="l01571"></a><span class="lineno"> 1571</span> </div><div class="line"><a name="l01572"></a><span class="lineno"> 1572</span>  const char* what() const noexcept;</div><div class="line"><a name="l01573"></a><span class="lineno"> 1573</span>  };</div><div class="line"><a name="l01574"></a><span class="lineno"> 1574</span> </div><div class="line"><a name="l01575"></a><span class="lineno"> 1575</span>  /**</div><div class="line"><a name="l01576"></a><span class="lineno"> 1576</span>  * Trait identifying "location-invariant" types, meaning that the</div><div class="line"><a name="l01577"></a><span class="lineno"> 1577</span>  * address of the object (or any of its members) will not escape.</div><div class="line"><a name="l01578"></a><span class="lineno"> 1578</span>  * Trivially copyable types are location-invariant and users can</div><div class="line"><a name="l01579"></a><span class="lineno"> 1579</span>  * specialize this trait for other types.</div><div class="line"><a name="l01580"></a><span class="lineno"> 1580</span>  */</div><div class="line"><a name="l01581"></a><span class="lineno"> 1581</span>  template<typename _Tp></div><div class="line"><a name="l01582"></a><span class="lineno"> 1582</span>  struct __is_location_invariant</div><div class="line"><a name="l01583"></a><span class="lineno"> 1583</span>  : is_trivially_copyable<_Tp>::type</div><div class="line"><a name="l01584"></a><span class="lineno"> 1584</span>  { };</div><div class="line"><a name="l01585"></a><span class="lineno"> 1585</span> </div><div class="line"><a name="l01586"></a><span class="lineno"> 1586</span>  class _Undefined_class;</div><div class="line"><a name="l01587"></a><span class="lineno"> 1587</span> </div><div class="line"><a name="l01588"></a><span class="lineno"> 1588</span>  union _Nocopy_types</div><div class="line"><a name="l01589"></a><span class="lineno"> 1589</span>  {</div><div class="line"><a name="l01590"></a><span class="lineno"> 1590</span>  void* _M_object;</div><div class="line"><a name="l01591"></a><span class="lineno"> 1591</span>  const void* _M_const_object;</div><div class="line"><a name="l01592"></a><span class="lineno"> 1592</span>  void (*_M_function_pointer)();</div><div class="line"><a name="l01593"></a><span class="lineno"> 1593</span>  void (_Undefined_class::*_M_member_pointer)();</div><div class="line"><a name="l01594"></a><span class="lineno"> 1594</span>  };</div><div class="line"><a name="l01595"></a><span class="lineno"> 1595</span> </div><div class="line"><a name="l01596"></a><span class="lineno"> 1596</span>  union [[gnu::may_alias]] _Any_data</div><div class="line"><a name="l01597"></a><span class="lineno"> 1597</span>  {</div><div class="line"><a name="l01598"></a><span class="lineno"> 1598</span>  void* _M_access() { return &_M_pod_data[0]; }</div><div class="line"><a name="l01599"></a><span class="lineno"> 1599</span>  const void* _M_access() const { return &_M_pod_data[0]; }</div><div class="line"><a name="l01600"></a><span class="lineno"> 1600</span> </div><div class="line"><a name="l01601"></a><span class="lineno"> 1601</span>  template<typename _Tp></div><div class="line"><a name="l01602"></a><span class="lineno"> 1602</span>  _Tp&</div><div class="line"><a name="l01603"></a><span class="lineno"> 1603</span>  _M_access()</div><div class="line"><a name="l01604"></a><span class="lineno"> 1604</span>  { return *static_cast<_Tp*>(_M_access()); }</div><div class="line"><a name="l01605"></a><span class="lineno"> 1605</span> </div><div class="line"><a name="l01606"></a><span class="lineno"> 1606</span>  template<typename _Tp></div><div class="line"><a name="l01607"></a><span class="lineno"> 1607</span>  const _Tp&</div><div class="line"><a name="l01608"></a><span class="lineno"> 1608</span>  _M_access() const</div><div class="line"><a name="l01609"></a><span class="lineno"> 1609</span>  { return *static_cast<const _Tp*>(_M_access()); }</div><div class="line"><a name="l01610"></a><span class="lineno"> 1610</span> </div><div class="line"><a name="l01611"></a><span class="lineno"> 1611</span>  _Nocopy_types _M_unused;</div><div class="line"><a name="l01612"></a><span class="lineno"> 1612</span>  char _M_pod_data[sizeof(_Nocopy_types)];</div><div class="line"><a name="l01613"></a><span class="lineno"> 1613</span>  };</div><div class="line"><a name="l01614"></a><span class="lineno"> 1614</span> </div><div class="line"><a name="l01615"></a><span class="lineno"> 1615</span>  enum _Manager_operation</div><div class="line"><a name="l01616"></a><span class="lineno"> 1616</span>  {</div><div class="line"><a name="l01617"></a><span class="lineno"> 1617</span>  __get_type_info,</div><div class="line"><a name="l01618"></a><span class="lineno"> 1618</span>  __get_functor_ptr,</div><div class="line"><a name="l01619"></a><span class="lineno"> 1619</span>  __clone_functor,</div><div class="line"><a name="l01620"></a><span class="lineno"> 1620</span>  __destroy_functor</div><div class="line"><a name="l01621"></a><span class="lineno"> 1621</span>  };</div><div class="line"><a name="l01622"></a><span class="lineno"> 1622</span> </div><div class="line"><a name="l01623"></a><span class="lineno"> 1623</span>  // Simple type wrapper that helps avoid annoying const problems</div><div class="line"><a name="l01624"></a><span class="lineno"> 1624</span>  // when casting between void pointers and pointers-to-pointers.</div><div class="line"><a name="l01625"></a><span class="lineno"> 1625</span>  template<typename _Tp></div><div class="line"><a name="l01626"></a><span class="lineno"> 1626</span>  struct _Simple_type_wrapper</div><div class="line"><a name="l01627"></a><span class="lineno"> 1627</span>  {</div><div class="line"><a name="l01628"></a><span class="lineno"> 1628</span>  _Simple_type_wrapper(_Tp __value) : __value(__value) { }</div><div class="line"><a name="l01629"></a><span class="lineno"> 1629</span> </div><div class="line"><a name="l01630"></a><span class="lineno"> 1630</span>  _Tp __value;</div><div class="line"><a name="l01631"></a><span class="lineno"> 1631</span>  };</div><div class="line"><a name="l01632"></a><span class="lineno"> 1632</span> </div><div class="line"><a name="l01633"></a><span class="lineno"> 1633</span>  template<typename _Tp></div><div class="line"><a name="l01634"></a><span class="lineno"> 1634</span>  struct __is_location_invariant<_Simple_type_wrapper<_Tp> ></div><div class="line"><a name="l01635"></a><span class="lineno"> 1635</span>  : __is_location_invariant<_Tp></div><div class="line"><a name="l01636"></a><span class="lineno"> 1636</span>  { };</div><div class="line"><a name="l01637"></a><span class="lineno"> 1637</span> </div><div class="line"><a name="l01638"></a><span class="lineno"> 1638</span>  // Converts a reference to a function object into a callable</div><div class="line"><a name="l01639"></a><span class="lineno"> 1639</span>  // function object.</div><div class="line"><a name="l01640"></a><span class="lineno"> 1640</span>  template<typename _Functor></div><div class="line"><a name="l01641"></a><span class="lineno"> 1641</span>  inline _Functor&</div><div class="line"><a name="l01642"></a><span class="lineno"> 1642</span>  __callable_functor(_Functor& __f)</div><div class="line"><a name="l01643"></a><span class="lineno"> 1643</span>  { return __f; }</div><div class="line"><a name="l01644"></a><span class="lineno"> 1644</span> </div><div class="line"><a name="l01645"></a><span class="lineno"> 1645</span>  template<typename _Member, typename _Class></div><div class="line"><a name="l01646"></a><span class="lineno"> 1646</span>  inline _Mem_fn<_Member _Class::*></div><div class="line"><a name="l01647"></a><span class="lineno"> 1647</span>  __callable_functor(_Member _Class::* &__p)</div><div class="line"><a name="l01648"></a><span class="lineno"> 1648</span>  { return std::mem_fn(__p); }</div><div class="line"><a name="l01649"></a><span class="lineno"> 1649</span> </div><div class="line"><a name="l01650"></a><span class="lineno"> 1650</span>  template<typename _Member, typename _Class></div><div class="line"><a name="l01651"></a><span class="lineno"> 1651</span>  inline _Mem_fn<_Member _Class::*></div><div class="line"><a name="l01652"></a><span class="lineno"> 1652</span>  __callable_functor(_Member _Class::* const &__p)</div><div class="line"><a name="l01653"></a><span class="lineno"> 1653</span>  { return std::mem_fn(__p); }</div><div class="line"><a name="l01654"></a><span class="lineno"> 1654</span> </div><div class="line"><a name="l01655"></a><span class="lineno"> 1655</span>  template<typename _Member, typename _Class></div><div class="line"><a name="l01656"></a><span class="lineno"> 1656</span>  inline _Mem_fn<_Member _Class::*></div><div class="line"><a name="l01657"></a><span class="lineno"> 1657</span>  __callable_functor(_Member _Class::* volatile &__p)</div><div class="line"><a name="l01658"></a><span class="lineno"> 1658</span>  { return std::mem_fn(__p); }</div><div class="line"><a name="l01659"></a><span class="lineno"> 1659</span> </div><div class="line"><a name="l01660"></a><span class="lineno"> 1660</span>  template<typename _Member, typename _Class></div><div class="line"><a name="l01661"></a><span class="lineno"> 1661</span>  inline _Mem_fn<_Member _Class::*></div><div class="line"><a name="l01662"></a><span class="lineno"> 1662</span>  __callable_functor(_Member _Class::* const volatile &__p)</div><div class="line"><a name="l01663"></a><span class="lineno"> 1663</span>  { return std::mem_fn(__p); }</div><div class="line"><a name="l01664"></a><span class="lineno"> 1664</span> </div><div class="line"><a name="l01665"></a><span class="lineno"> 1665</span>  template<typename _Signature></div><div class="line"><a name="l01666"></a><span class="lineno"> 1666</span>  class function;</div><div class="line"><a name="l01667"></a><span class="lineno"> 1667</span> </div><div class="line"><a name="l01668"></a><span class="lineno"> 1668</span>  /// Base class of all polymorphic function object wrappers.</div><div class="line"><a name="l01669"></a><span class="lineno"> 1669</span>  class _Function_base</div><div class="line"><a name="l01670"></a><span class="lineno"> 1670</span>  {</div><div class="line"><a name="l01671"></a><span class="lineno"> 1671</span>  public:</div><div class="line"><a name="l01672"></a><span class="lineno"> 1672</span>  static const std::size_t _M_max_size = sizeof(_Nocopy_types);</div><div class="line"><a name="l01673"></a><span class="lineno"> 1673</span>  static const std::size_t _M_max_align = __alignof__(_Nocopy_types);</div><div class="line"><a name="l01674"></a><span class="lineno"> 1674</span> </div><div class="line"><a name="l01675"></a><span class="lineno"> 1675</span>  template<typename _Functor></div><div class="line"><a name="l01676"></a><span class="lineno"> 1676</span>  class _Base_manager</div><div class="line"><a name="l01677"></a><span class="lineno"> 1677</span>  {</div><div class="line"><a name="l01678"></a><span class="lineno"> 1678</span>  protected:</div><div class="line"><a name="l01679"></a><span class="lineno"> 1679</span>  static const bool __stored_locally =</div><div class="line"><a name="l01680"></a><span class="lineno"> 1680</span>  (__is_location_invariant<_Functor>::value</div><div class="line"><a name="l01681"></a><span class="lineno"> 1681</span>  && sizeof(_Functor) <= _M_max_size</div><div class="line"><a name="l01682"></a><span class="lineno"> 1682</span>  && __alignof__(_Functor) <= _M_max_align</div><div class="line"><a name="l01683"></a><span class="lineno"> 1683</span>  && (_M_max_align % __alignof__(_Functor) == 0));</div><div class="line"><a name="l01684"></a><span class="lineno"> 1684</span> </div><div class="line"><a name="l01685"></a><span class="lineno"> 1685</span>  typedef integral_constant<bool, __stored_locally> _Local_storage;</div><div class="line"><a name="l01686"></a><span class="lineno"> 1686</span> </div><div class="line"><a name="l01687"></a><span class="lineno"> 1687</span>  // Retrieve a pointer to the function object</div><div class="line"><a name="l01688"></a><span class="lineno"> 1688</span>  static _Functor*</div><div class="line"><a name="l01689"></a><span class="lineno"> 1689</span>  _M_get_pointer(const _Any_data& __source)</div><div class="line"><a name="l01690"></a><span class="lineno"> 1690</span>  {</div><div class="line"><a name="l01691"></a><span class="lineno"> 1691</span>  const _Functor* __ptr =</div><div class="line"><a name="l01692"></a><span class="lineno"> 1692</span>  __stored_locally? std::__addressof(__source._M_access<_Functor>())</div><div class="line"><a name="l01693"></a><span class="lineno"> 1693</span>  /* have stored a pointer */ : __source._M_access<_Functor*>();</div><div class="line"><a name="l01694"></a><span class="lineno"> 1694</span>  return const_cast<_Functor*>(__ptr);</div><div class="line"><a name="l01695"></a><span class="lineno"> 1695</span>  }</div><div class="line"><a name="l01696"></a><span class="lineno"> 1696</span> </div><div class="line"><a name="l01697"></a><span class="lineno"> 1697</span>  // Clone a location-invariant function object that fits within</div><div class="line"><a name="l01698"></a><span class="lineno"> 1698</span>  // an _Any_data structure.</div><div class="line"><a name="l01699"></a><span class="lineno"> 1699</span>  static void</div><div class="line"><a name="l01700"></a><span class="lineno"> 1700</span>  _M_clone(_Any_data& __dest, const _Any_data& __source, true_type)</div><div class="line"><a name="l01701"></a><span class="lineno"> 1701</span>  {</div><div class="line"><a name="l01702"></a><span class="lineno"> 1702</span>  ::new (__dest._M_access()) _Functor(__source._M_access<_Functor>());</div><div class="line"><a name="l01703"></a><span class="lineno"> 1703</span>  }</div><div class="line"><a name="l01704"></a><span class="lineno"> 1704</span> </div><div class="line"><a name="l01705"></a><span class="lineno"> 1705</span>  // Clone a function object that is not location-invariant or</div><div class="line"><a name="l01706"></a><span class="lineno"> 1706</span>  // that cannot fit into an _Any_data structure.</div><div class="line"><a name="l01707"></a><span class="lineno"> 1707</span>  static void</div><div class="line"><a name="l01708"></a><span class="lineno"> 1708</span>  _M_clone(_Any_data& __dest, const _Any_data& __source, false_type)</div><div class="line"><a name="l01709"></a><span class="lineno"> 1709</span>  {</div><div class="line"><a name="l01710"></a><span class="lineno"> 1710</span>  __dest._M_access<_Functor*>() =</div><div class="line"><a name="l01711"></a><span class="lineno"> 1711</span>  new _Functor(*__source._M_access<_Functor*>());</div><div class="line"><a name="l01712"></a><span class="lineno"> 1712</span>  }</div><div class="line"><a name="l01713"></a><span class="lineno"> 1713</span> </div><div class="line"><a name="l01714"></a><span class="lineno"> 1714</span>  // Destroying a location-invariant object may still require</div><div class="line"><a name="l01715"></a><span class="lineno"> 1715</span>  // destruction.</div><div class="line"><a name="l01716"></a><span class="lineno"> 1716</span>  static void</div><div class="line"><a name="l01717"></a><span class="lineno"> 1717</span>  _M_destroy(_Any_data& __victim, true_type)</div><div class="line"><a name="l01718"></a><span class="lineno"> 1718</span>  {</div><div class="line"><a name="l01719"></a><span class="lineno"> 1719</span>  __victim._M_access<_Functor>().~_Functor();</div><div class="line"><a name="l01720"></a><span class="lineno"> 1720</span>  }</div><div class="line"><a name="l01721"></a><span class="lineno"> 1721</span> </div><div class="line"><a name="l01722"></a><span class="lineno"> 1722</span>  // Destroying an object located on the heap.</div><div class="line"><a name="l01723"></a><span class="lineno"> 1723</span>  static void</div><div class="line"><a name="l01724"></a><span class="lineno"> 1724</span>  _M_destroy(_Any_data& __victim, false_type)</div><div class="line"><a name="l01725"></a><span class="lineno"> 1725</span>  {</div><div class="line"><a name="l01726"></a><span class="lineno"> 1726</span>  delete __victim._M_access<_Functor*>();</div><div class="line"><a name="l01727"></a><span class="lineno"> 1727</span>  }</div><div class="line"><a name="l01728"></a><span class="lineno"> 1728</span> </div><div class="line"><a name="l01729"></a><span class="lineno"> 1729</span>  public:</div><div class="line"><a name="l01730"></a><span class="lineno"> 1730</span>  static bool</div><div class="line"><a name="l01731"></a><span class="lineno"> 1731</span>  _M_manager(_Any_data& __dest, const _Any_data& __source,</div><div class="line"><a name="l01732"></a><span class="lineno"> 1732</span>  _Manager_operation __op)</div><div class="line"><a name="l01733"></a><span class="lineno"> 1733</span>  {</div><div class="line"><a name="l01734"></a><span class="lineno"> 1734</span>  switch (__op)</div><div class="line"><a name="l01735"></a><span class="lineno"> 1735</span>  {</div><div class="line"><a name="l01736"></a><span class="lineno"> 1736</span> #if __cpp_rtti</div><div class="line"><a name="l01737"></a><span class="lineno"> 1737</span>  case __get_type_info:</div><div class="line"><a name="l01738"></a><span class="lineno"> 1738</span>  __dest._M_access<const type_info*>() = &typeid(_Functor);</div><div class="line"><a name="l01739"></a><span class="lineno"> 1739</span>  break;</div><div class="line"><a name="l01740"></a><span class="lineno"> 1740</span> #endif</div><div class="line"><a name="l01741"></a><span class="lineno"> 1741</span>  case __get_functor_ptr:</div><div class="line"><a name="l01742"></a><span class="lineno"> 1742</span>  __dest._M_access<_Functor*>() = _M_get_pointer(__source);</div><div class="line"><a name="l01743"></a><span class="lineno"> 1743</span>  break;</div><div class="line"><a name="l01744"></a><span class="lineno"> 1744</span> </div><div class="line"><a name="l01745"></a><span class="lineno"> 1745</span>  case __clone_functor:</div><div class="line"><a name="l01746"></a><span class="lineno"> 1746</span>  _M_clone(__dest, __source, _Local_storage());</div><div class="line"><a name="l01747"></a><span class="lineno"> 1747</span>  break;</div><div class="line"><a name="l01748"></a><span class="lineno"> 1748</span> </div><div class="line"><a name="l01749"></a><span class="lineno"> 1749</span>  case __destroy_functor:</div><div class="line"><a name="l01750"></a><span class="lineno"> 1750</span>  _M_destroy(__dest, _Local_storage());</div><div class="line"><a name="l01751"></a><span class="lineno"> 1751</span>  break;</div><div class="line"><a name="l01752"></a><span class="lineno"> 1752</span>  }</div><div class="line"><a name="l01753"></a><span class="lineno"> 1753</span>  return false;</div><div class="line"><a name="l01754"></a><span class="lineno"> 1754</span>  }</div><div class="line"><a name="l01755"></a><span class="lineno"> 1755</span> </div><div class="line"><a name="l01756"></a><span class="lineno"> 1756</span>  static void</div><div class="line"><a name="l01757"></a><span class="lineno"> 1757</span>  _M_init_functor(_Any_data& __functor, _Functor&& __f)</div><div class="line"><a name="l01758"></a><span class="lineno"> 1758</span>  { _M_init_functor(__functor, std::move(__f), _Local_storage()); }</div><div class="line"><a name="l01759"></a><span class="lineno"> 1759</span> </div><div class="line"><a name="l01760"></a><span class="lineno"> 1760</span>  template<typename _Signature></div><div class="line"><a name="l01761"></a><span class="lineno"> 1761</span>  static bool</div><div class="line"><a name="l01762"></a><span class="lineno"> 1762</span>  _M_not_empty_function(const function<_Signature>& __f)</div><div class="line"><a name="l01763"></a><span class="lineno"> 1763</span>  { return static_cast<bool>(__f); }</div><div class="line"><a name="l01764"></a><span class="lineno"> 1764</span> </div><div class="line"><a name="l01765"></a><span class="lineno"> 1765</span>  template<typename _Tp></div><div class="line"><a name="l01766"></a><span class="lineno"> 1766</span>  static bool</div><div class="line"><a name="l01767"></a><span class="lineno"> 1767</span>  _M_not_empty_function(_Tp* __fp)</div><div class="line"><a name="l01768"></a><span class="lineno"> 1768</span>  { return __fp != nullptr; }</div><div class="line"><a name="l01769"></a><span class="lineno"> 1769</span> </div><div class="line"><a name="l01770"></a><span class="lineno"> 1770</span>  template<typename _Class, typename _Tp></div><div class="line"><a name="l01771"></a><span class="lineno"> 1771</span>  static bool</div><div class="line"><a name="l01772"></a><span class="lineno"> 1772</span>  _M_not_empty_function(_Tp _Class::* __mp)</div><div class="line"><a name="l01773"></a><span class="lineno"> 1773</span>  { return __mp != nullptr; }</div><div class="line"><a name="l01774"></a><span class="lineno"> 1774</span> </div><div class="line"><a name="l01775"></a><span class="lineno"> 1775</span>  template<typename _Tp></div><div class="line"><a name="l01776"></a><span class="lineno"> 1776</span>  static bool</div><div class="line"><a name="l01777"></a><span class="lineno"> 1777</span>  _M_not_empty_function(const _Tp&)</div><div class="line"><a name="l01778"></a><span class="lineno"> 1778</span>  { return true; }</div><div class="line"><a name="l01779"></a><span class="lineno"> 1779</span> </div><div class="line"><a name="l01780"></a><span class="lineno"> 1780</span>  private:</div><div class="line"><a name="l01781"></a><span class="lineno"> 1781</span>  static void</div><div class="line"><a name="l01782"></a><span class="lineno"> 1782</span>  _M_init_functor(_Any_data& __functor, _Functor&& __f, true_type)</div><div class="line"><a name="l01783"></a><span class="lineno"> 1783</span>  { ::new (__functor._M_access()) _Functor(std::move(__f)); }</div><div class="line"><a name="l01784"></a><span class="lineno"> 1784</span> </div><div class="line"><a name="l01785"></a><span class="lineno"> 1785</span>  static void</div><div class="line"><a name="l01786"></a><span class="lineno"> 1786</span>  _M_init_functor(_Any_data& __functor, _Functor&& __f, false_type)</div><div class="line"><a name="l01787"></a><span class="lineno"> 1787</span>  { __functor._M_access<_Functor*>() = new _Functor(std::move(__f)); }</div><div class="line"><a name="l01788"></a><span class="lineno"> 1788</span>  };</div><div class="line"><a name="l01789"></a><span class="lineno"> 1789</span> </div><div class="line"><a name="l01790"></a><span class="lineno"> 1790</span>  template<typename _Functor></div><div class="line"><a name="l01791"></a><span class="lineno"> 1791</span>  class _Ref_manager : public _Base_manager<_Functor*></div><div class="line"><a name="l01792"></a><span class="lineno"> 1792</span>  {</div><div class="line"><a name="l01793"></a><span class="lineno"> 1793</span>  typedef _Function_base::_Base_manager<_Functor*> _Base;</div><div class="line"><a name="l01794"></a><span class="lineno"> 1794</span> </div><div class="line"><a name="l01795"></a><span class="lineno"> 1795</span>  public:</div><div class="line"><a name="l01796"></a><span class="lineno"> 1796</span>  static bool</div><div class="line"><a name="l01797"></a><span class="lineno"> 1797</span>  _M_manager(_Any_data& __dest, const _Any_data& __source,</div><div class="line"><a name="l01798"></a><span class="lineno"> 1798</span>  _Manager_operation __op)</div><div class="line"><a name="l01799"></a><span class="lineno"> 1799</span>  {</div><div class="line"><a name="l01800"></a><span class="lineno"> 1800</span>  switch (__op)</div><div class="line"><a name="l01801"></a><span class="lineno"> 1801</span>  {</div><div class="line"><a name="l01802"></a><span class="lineno"> 1802</span> #if __cpp_rtti</div><div class="line"><a name="l01803"></a><span class="lineno"> 1803</span>  case __get_type_info:</div><div class="line"><a name="l01804"></a><span class="lineno"> 1804</span>  __dest._M_access<const type_info*>() = &typeid(_Functor);</div><div class="line"><a name="l01805"></a><span class="lineno"> 1805</span>  break;</div><div class="line"><a name="l01806"></a><span class="lineno"> 1806</span> #endif</div><div class="line"><a name="l01807"></a><span class="lineno"> 1807</span>  case __get_functor_ptr:</div><div class="line"><a name="l01808"></a><span class="lineno"> 1808</span>  __dest._M_access<_Functor*>() = *_Base::_M_get_pointer(__source);</div><div class="line"><a name="l01809"></a><span class="lineno"> 1809</span>  return is_const<_Functor>::value;</div><div class="line"><a name="l01810"></a><span class="lineno"> 1810</span>  break;</div><div class="line"><a name="l01811"></a><span class="lineno"> 1811</span> </div><div class="line"><a name="l01812"></a><span class="lineno"> 1812</span>  default:</div><div class="line"><a name="l01813"></a><span class="lineno"> 1813</span>  _Base::_M_manager(__dest, __source, __op);</div><div class="line"><a name="l01814"></a><span class="lineno"> 1814</span>  }</div><div class="line"><a name="l01815"></a><span class="lineno"> 1815</span>  return false;</div><div class="line"><a name="l01816"></a><span class="lineno"> 1816</span>  }</div><div class="line"><a name="l01817"></a><span class="lineno"> 1817</span> </div><div class="line"><a name="l01818"></a><span class="lineno"> 1818</span>  static void</div><div class="line"><a name="l01819"></a><span class="lineno"> 1819</span>  _M_init_functor(_Any_data& __functor, reference_wrapper<_Functor> __f)</div><div class="line"><a name="l01820"></a><span class="lineno"> 1820</span>  {</div><div class="line"><a name="l01821"></a><span class="lineno"> 1821</span>  _Base::_M_init_functor(__functor, std::__addressof(__f.get()));</div><div class="line"><a name="l01822"></a><span class="lineno"> 1822</span>  }</div><div class="line"><a name="l01823"></a><span class="lineno"> 1823</span>  };</div><div class="line"><a name="l01824"></a><span class="lineno"> 1824</span> </div><div class="line"><a name="l01825"></a><span class="lineno"> 1825</span>  _Function_base() : _M_manager(nullptr) { }</div><div class="line"><a name="l01826"></a><span class="lineno"> 1826</span> </div><div class="line"><a name="l01827"></a><span class="lineno"> 1827</span>  ~_Function_base()</div><div class="line"><a name="l01828"></a><span class="lineno"> 1828</span>  {</div><div class="line"><a name="l01829"></a><span class="lineno"> 1829</span>  if (_M_manager)</div><div class="line"><a name="l01830"></a><span class="lineno"> 1830</span>  _M_manager(_M_functor, _M_functor, __destroy_functor);</div><div class="line"><a name="l01831"></a><span class="lineno"> 1831</span>  }</div><div class="line"><a name="l01832"></a><span class="lineno"> 1832</span> </div><div class="line"><a name="l01833"></a><span class="lineno"> 1833</span> </div><div class="line"><a name="l01834"></a><span class="lineno"> 1834</span>  bool _M_empty() const { return !_M_manager; }</div><div class="line"><a name="l01835"></a><span class="lineno"> 1835</span> </div><div class="line"><a name="l01836"></a><span class="lineno"> 1836</span>  typedef bool (*_Manager_type)(_Any_data&, const _Any_data&,</div><div class="line"><a name="l01837"></a><span class="lineno"> 1837</span>  _Manager_operation);</div><div class="line"><a name="l01838"></a><span class="lineno"> 1838</span> </div><div class="line"><a name="l01839"></a><span class="lineno"> 1839</span>  _Any_data _M_functor;</div><div class="line"><a name="l01840"></a><span class="lineno"> 1840</span>  _Manager_type _M_manager;</div><div class="line"><a name="l01841"></a><span class="lineno"> 1841</span>  };</div><div class="line"><a name="l01842"></a><span class="lineno"> 1842</span> </div><div class="line"><a name="l01843"></a><span class="lineno"> 1843</span>  template<typename _Signature, typename _Functor></div><div class="line"><a name="l01844"></a><span class="lineno"> 1844</span>  class _Function_handler;</div><div class="line"><a name="l01845"></a><span class="lineno"> 1845</span> </div><div class="line"><a name="l01846"></a><span class="lineno"> 1846</span>  template<typename _Res, typename _Functor, typename... _ArgTypes></div><div class="line"><a name="l01847"></a><span class="lineno"> 1847</span>  class _Function_handler<_Res(_ArgTypes...), _Functor></div><div class="line"><a name="l01848"></a><span class="lineno"> 1848</span>  : public _Function_base::_Base_manager<_Functor></div><div class="line"><a name="l01849"></a><span class="lineno"> 1849</span>  {</div><div class="line"><a name="l01850"></a><span class="lineno"> 1850</span>  typedef _Function_base::_Base_manager<_Functor> _Base;</div><div class="line"><a name="l01851"></a><span class="lineno"> 1851</span> </div><div class="line"><a name="l01852"></a><span class="lineno"> 1852</span>  public:</div><div class="line"><a name="l01853"></a><span class="lineno"> 1853</span>  static _Res</div><div class="line"><a name="l01854"></a><span class="lineno"> 1854</span>  _M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)</div><div class="line"><a name="l01855"></a><span class="lineno"> 1855</span>  {</div><div class="line"><a name="l01856"></a><span class="lineno"> 1856</span>  return (*_Base::_M_get_pointer(__functor))(</div><div class="line"><a name="l01857"></a><span class="lineno"> 1857</span>  std::forward<_ArgTypes>(__args)...);</div><div class="line"><a name="l01858"></a><span class="lineno"> 1858</span>  }</div><div class="line"><a name="l01859"></a><span class="lineno"> 1859</span>  };</div><div class="line"><a name="l01860"></a><span class="lineno"> 1860</span> </div><div class="line"><a name="l01861"></a><span class="lineno"> 1861</span>  template<typename _Functor, typename... _ArgTypes></div><div class="line"><a name="l01862"></a><span class="lineno"> 1862</span>  class _Function_handler<void(_ArgTypes...), _Functor></div><div class="line"><a name="l01863"></a><span class="lineno"> 1863</span>  : public _Function_base::_Base_manager<_Functor></div><div class="line"><a name="l01864"></a><span class="lineno"> 1864</span>  {</div><div class="line"><a name="l01865"></a><span class="lineno"> 1865</span>  typedef _Function_base::_Base_manager<_Functor> _Base;</div><div class="line"><a name="l01866"></a><span class="lineno"> 1866</span> </div><div class="line"><a name="l01867"></a><span class="lineno"> 1867</span>  public:</div><div class="line"><a name="l01868"></a><span class="lineno"> 1868</span>  static void</div><div class="line"><a name="l01869"></a><span class="lineno"> 1869</span>  _M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)</div><div class="line"><a name="l01870"></a><span class="lineno"> 1870</span>  {</div><div class="line"><a name="l01871"></a><span class="lineno"> 1871</span>  (*_Base::_M_get_pointer(__functor))(</div><div class="line"><a name="l01872"></a><span class="lineno"> 1872</span>  std::forward<_ArgTypes>(__args)...);</div><div class="line"><a name="l01873"></a><span class="lineno"> 1873</span>  }</div><div class="line"><a name="l01874"></a><span class="lineno"> 1874</span>  };</div><div class="line"><a name="l01875"></a><span class="lineno"> 1875</span> </div><div class="line"><a name="l01876"></a><span class="lineno"> 1876</span>  template<typename _Res, typename _Functor, typename... _ArgTypes></div><div class="line"><a name="l01877"></a><span class="lineno"> 1877</span>  class _Function_handler<_Res(_ArgTypes...), reference_wrapper<_Functor> ></div><div class="line"><a name="l01878"></a><span class="lineno"> 1878</span>  : public _Function_base::_Ref_manager<_Functor></div><div class="line"><a name="l01879"></a><span class="lineno"> 1879</span>  {</div><div class="line"><a name="l01880"></a><span class="lineno"> 1880</span>  typedef _Function_base::_Ref_manager<_Functor> _Base;</div><div class="line"><a name="l01881"></a><span class="lineno"> 1881</span> </div><div class="line"><a name="l01882"></a><span class="lineno"> 1882</span>  public:</div><div class="line"><a name="l01883"></a><span class="lineno"> 1883</span>  static _Res</div><div class="line"><a name="l01884"></a><span class="lineno"> 1884</span>  _M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)</div><div class="line"><a name="l01885"></a><span class="lineno"> 1885</span>  {</div><div class="line"><a name="l01886"></a><span class="lineno"> 1886</span>  return std::__callable_functor(**_Base::_M_get_pointer(__functor))(</div><div class="line"><a name="l01887"></a><span class="lineno"> 1887</span>  std::forward<_ArgTypes>(__args)...);</div><div class="line"><a name="l01888"></a><span class="lineno"> 1888</span>  }</div><div class="line"><a name="l01889"></a><span class="lineno"> 1889</span>  };</div><div class="line"><a name="l01890"></a><span class="lineno"> 1890</span> </div><div class="line"><a name="l01891"></a><span class="lineno"> 1891</span>  template<typename _Functor, typename... _ArgTypes></div><div class="line"><a name="l01892"></a><span class="lineno"> 1892</span>  class _Function_handler<void(_ArgTypes...), reference_wrapper<_Functor> ></div><div class="line"><a name="l01893"></a><span class="lineno"> 1893</span>  : public _Function_base::_Ref_manager<_Functor></div><div class="line"><a name="l01894"></a><span class="lineno"> 1894</span>  {</div><div class="line"><a name="l01895"></a><span class="lineno"> 1895</span>  typedef _Function_base::_Ref_manager<_Functor> _Base;</div><div class="line"><a name="l01896"></a><span class="lineno"> 1896</span> </div><div class="line"><a name="l01897"></a><span class="lineno"> 1897</span>  public:</div><div class="line"><a name="l01898"></a><span class="lineno"> 1898</span>  static void</div><div class="line"><a name="l01899"></a><span class="lineno"> 1899</span>  _M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)</div><div class="line"><a name="l01900"></a><span class="lineno"> 1900</span>  {</div><div class="line"><a name="l01901"></a><span class="lineno"> 1901</span>  std::__callable_functor(**_Base::_M_get_pointer(__functor))(</div><div class="line"><a name="l01902"></a><span class="lineno"> 1902</span>  std::forward<_ArgTypes>(__args)...);</div><div class="line"><a name="l01903"></a><span class="lineno"> 1903</span>  }</div><div class="line"><a name="l01904"></a><span class="lineno"> 1904</span>  };</div><div class="line"><a name="l01905"></a><span class="lineno"> 1905</span> </div><div class="line"><a name="l01906"></a><span class="lineno"> 1906</span>  template<typename _Class, typename _Member, typename _Res,</div><div class="line"><a name="l01907"></a><span class="lineno"> 1907</span>  typename... _ArgTypes></div><div class="line"><a name="l01908"></a><span class="lineno"> 1908</span>  class _Function_handler<_Res(_ArgTypes...), _Member _Class::*></div><div class="line"><a name="l01909"></a><span class="lineno"> 1909</span>  : public _Function_handler<void(_ArgTypes...), _Member _Class::*></div><div class="line"><a name="l01910"></a><span class="lineno"> 1910</span>  {</div><div class="line"><a name="l01911"></a><span class="lineno"> 1911</span>  typedef _Function_handler<void(_ArgTypes...), _Member _Class::*></div><div class="line"><a name="l01912"></a><span class="lineno"> 1912</span>  _Base;</div><div class="line"><a name="l01913"></a><span class="lineno"> 1913</span> </div><div class="line"><a name="l01914"></a><span class="lineno"> 1914</span>  public:</div><div class="line"><a name="l01915"></a><span class="lineno"> 1915</span>  static _Res</div><div class="line"><a name="l01916"></a><span class="lineno"> 1916</span>  _M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)</div><div class="line"><a name="l01917"></a><span class="lineno"> 1917</span>  {</div><div class="line"><a name="l01918"></a><span class="lineno"> 1918</span>  return std::mem_fn(_Base::_M_get_pointer(__functor)->__value)(</div><div class="line"><a name="l01919"></a><span class="lineno"> 1919</span>  std::forward<_ArgTypes>(__args)...);</div><div class="line"><a name="l01920"></a><span class="lineno"> 1920</span>  }</div><div class="line"><a name="l01921"></a><span class="lineno"> 1921</span>  };</div><div class="line"><a name="l01922"></a><span class="lineno"> 1922</span> </div><div class="line"><a name="l01923"></a><span class="lineno"> 1923</span>  template<typename _Class, typename _Member, typename... _ArgTypes></div><div class="line"><a name="l01924"></a><span class="lineno"> 1924</span>  class _Function_handler<void(_ArgTypes...), _Member _Class::*></div><div class="line"><a name="l01925"></a><span class="lineno"> 1925</span>  : public _Function_base::_Base_manager<</div><div class="line"><a name="l01926"></a><span class="lineno"> 1926</span>  _Simple_type_wrapper< _Member _Class::* > ></div><div class="line"><a name="l01927"></a><span class="lineno"> 1927</span>  {</div><div class="line"><a name="l01928"></a><span class="lineno"> 1928</span>  typedef _Member _Class::* _Functor;</div><div class="line"><a name="l01929"></a><span class="lineno"> 1929</span>  typedef _Simple_type_wrapper<_Functor> _Wrapper;</div><div class="line"><a name="l01930"></a><span class="lineno"> 1930</span>  typedef _Function_base::_Base_manager<_Wrapper> _Base;</div><div class="line"><a name="l01931"></a><span class="lineno"> 1931</span> </div><div class="line"><a name="l01932"></a><span class="lineno"> 1932</span>  public:</div><div class="line"><a name="l01933"></a><span class="lineno"> 1933</span>  static bool</div><div class="line"><a name="l01934"></a><span class="lineno"> 1934</span>  _M_manager(_Any_data& __dest, const _Any_data& __source,</div><div class="line"><a name="l01935"></a><span class="lineno"> 1935</span>  _Manager_operation __op)</div><div class="line"><a name="l01936"></a><span class="lineno"> 1936</span>  {</div><div class="line"><a name="l01937"></a><span class="lineno"> 1937</span>  switch (__op)</div><div class="line"><a name="l01938"></a><span class="lineno"> 1938</span>  {</div><div class="line"><a name="l01939"></a><span class="lineno"> 1939</span> #if __cpp_rtti</div><div class="line"><a name="l01940"></a><span class="lineno"> 1940</span>  case __get_type_info:</div><div class="line"><a name="l01941"></a><span class="lineno"> 1941</span>  __dest._M_access<const type_info*>() = &typeid(_Functor);</div><div class="line"><a name="l01942"></a><span class="lineno"> 1942</span>  break;</div><div class="line"><a name="l01943"></a><span class="lineno"> 1943</span> #endif</div><div class="line"><a name="l01944"></a><span class="lineno"> 1944</span>  case __get_functor_ptr:</div><div class="line"><a name="l01945"></a><span class="lineno"> 1945</span>  __dest._M_access<_Functor*>() =</div><div class="line"><a name="l01946"></a><span class="lineno"> 1946</span>  &_Base::_M_get_pointer(__source)->__value;</div><div class="line"><a name="l01947"></a><span class="lineno"> 1947</span>  break;</div><div class="line"><a name="l01948"></a><span class="lineno"> 1948</span> </div><div class="line"><a name="l01949"></a><span class="lineno"> 1949</span>  default:</div><div class="line"><a name="l01950"></a><span class="lineno"> 1950</span>  _Base::_M_manager(__dest, __source, __op);</div><div class="line"><a name="l01951"></a><span class="lineno"> 1951</span>  }</div><div class="line"><a name="l01952"></a><span class="lineno"> 1952</span>  return false;</div><div class="line"><a name="l01953"></a><span class="lineno"> 1953</span>  }</div><div class="line"><a name="l01954"></a><span class="lineno"> 1954</span> </div><div class="line"><a name="l01955"></a><span class="lineno"> 1955</span>  static void</div><div class="line"><a name="l01956"></a><span class="lineno"> 1956</span>  _M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)</div><div class="line"><a name="l01957"></a><span class="lineno"> 1957</span>  {</div><div class="line"><a name="l01958"></a><span class="lineno"> 1958</span>  std::mem_fn(_Base::_M_get_pointer(__functor)->__value)(</div><div class="line"><a name="l01959"></a><span class="lineno"> 1959</span>  std::forward<_ArgTypes>(__args)...);</div><div class="line"><a name="l01960"></a><span class="lineno"> 1960</span>  }</div><div class="line"><a name="l01961"></a><span class="lineno"> 1961</span>  };</div><div class="line"><a name="l01962"></a><span class="lineno"> 1962</span> </div><div class="line"><a name="l01963"></a><span class="lineno"> 1963</span>  template<typename _From, typename _To></div><div class="line"><a name="l01964"></a><span class="lineno"> 1964</span>  using __check_func_return_type</div><div class="line"><a name="l01965"></a><span class="lineno"> 1965</span>  = __or_<is_void<_To>, is_convertible<_From, _To>>;</div><div class="line"><a name="l01966"></a><span class="lineno"> 1966</span> </div><div class="line"><a name="l01967"></a><span class="lineno"> 1967</span>  /**</div><div class="line"><a name="l01968"></a><span class="lineno"> 1968</span>  * @brief Primary class template for std::function.</div><div class="line"><a name="l01969"></a><span class="lineno"> 1969</span>  * @ingroup functors</div><div class="line"><a name="l01970"></a><span class="lineno"> 1970</span>  *</div><div class="line"><a name="l01971"></a><span class="lineno"> 1971</span>  * Polymorphic function wrapper.</div><div class="line"><a name="l01972"></a><span class="lineno"> 1972</span>  */</div><div class="line"><a name="l01973"></a><span class="lineno"> 1973</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l01974"></a><span class="lineno"> 1974</span>  class function<_Res(_ArgTypes...)></div><div class="line"><a name="l01975"></a><span class="lineno"> 1975</span>  : public _Maybe_unary_or_binary_function<_Res, _ArgTypes...>,</div><div class="line"><a name="l01976"></a><span class="lineno"> 1976</span>  private _Function_base</div><div class="line"><a name="l01977"></a><span class="lineno"> 1977</span>  {</div><div class="line"><a name="l01978"></a><span class="lineno"> 1978</span>  typedef _Res _Signature_type(_ArgTypes...);</div><div class="line"><a name="l01979"></a><span class="lineno"> 1979</span> </div><div class="line"><a name="l01980"></a><span class="lineno"> 1980</span>  template<typename _Func,</div><div class="line"><a name="l01981"></a><span class="lineno"> 1981</span>  typename _Res2 = typename result_of<_Func&(_ArgTypes...)>::type></div><div class="line"><a name="l01982"></a><span class="lineno"> 1982</span>  struct _Callable : __check_func_return_type<_Res2, _Res> { };</div><div class="line"><a name="l01983"></a><span class="lineno"> 1983</span> </div><div class="line"><a name="l01984"></a><span class="lineno"> 1984</span>  // Used so the return type convertibility checks aren't done when</div><div class="line"><a name="l01985"></a><span class="lineno"> 1985</span>  // performing overload resolution for copy construction/assignment.</div><div class="line"><a name="l01986"></a><span class="lineno"> 1986</span>  template<typename _Tp></div><div class="line"><a name="l01987"></a><span class="lineno"> 1987</span>  struct _Callable<function, _Tp> : false_type { };</div><div class="line"><a name="l01988"></a><span class="lineno"> 1988</span> </div><div class="line"><a name="l01989"></a><span class="lineno"> 1989</span>  template<typename _Cond, typename _Tp></div><div class="line"><a name="l01990"></a><span class="lineno"> 1990</span>  using _Requires = typename enable_if<_Cond::value, _Tp>::type;</div><div class="line"><a name="l01991"></a><span class="lineno"> 1991</span> </div><div class="line"><a name="l01992"></a><span class="lineno"> 1992</span>  public:</div><div class="line"><a name="l01993"></a><span class="lineno"> 1993</span>  typedef _Res result_type;</div><div class="line"><a name="l01994"></a><span class="lineno"> 1994</span> </div><div class="line"><a name="l01995"></a><span class="lineno"> 1995</span>  // [3.7.2.1] construct/copy/destroy</div><div class="line"><a name="l01996"></a><span class="lineno"> 1996</span> </div><div class="line"><a name="l01997"></a><span class="lineno"> 1997</span>  /**</div><div class="line"><a name="l01998"></a><span class="lineno"> 1998</span>  * @brief Default construct creates an empty function call wrapper.</div><div class="line"><a name="l01999"></a><span class="lineno"> 1999</span>  * @post @c !(bool)*this</div><div class="line"><a name="l02000"></a><span class="lineno"> 2000</span>  */</div><div class="line"><a name="l02001"></a><span class="lineno"> 2001</span>  function() noexcept</div><div class="line"><a name="l02002"></a><span class="lineno"> 2002</span>  : _Function_base() { }</div><div class="line"><a name="l02003"></a><span class="lineno"> 2003</span> </div><div class="line"><a name="l02004"></a><span class="lineno"> 2004</span>  /**</div><div class="line"><a name="l02005"></a><span class="lineno"> 2005</span>  * @brief Creates an empty function call wrapper.</div><div class="line"><a name="l02006"></a><span class="lineno"> 2006</span>  * @post @c !(bool)*this</div><div class="line"><a name="l02007"></a><span class="lineno"> 2007</span>  */</div><div class="line"><a name="l02008"></a><span class="lineno"> 2008</span>  function(nullptr_t) noexcept</div><div class="line"><a name="l02009"></a><span class="lineno"> 2009</span>  : _Function_base() { }</div><div class="line"><a name="l02010"></a><span class="lineno"> 2010</span> </div><div class="line"><a name="l02011"></a><span class="lineno"> 2011</span>  /**</div><div class="line"><a name="l02012"></a><span class="lineno"> 2012</span>  * @brief %Function copy constructor.</div><div class="line"><a name="l02013"></a><span class="lineno"> 2013</span>  * @param __x A %function object with identical call signature.</div><div class="line"><a name="l02014"></a><span class="lineno"> 2014</span>  * @post @c bool(*this) == bool(__x)</div><div class="line"><a name="l02015"></a><span class="lineno"> 2015</span>  *</div><div class="line"><a name="l02016"></a><span class="lineno"> 2016</span>  * The newly-created %function contains a copy of the target of @a</div><div class="line"><a name="l02017"></a><span class="lineno"> 2017</span>  * __x (if it has one).</div><div class="line"><a name="l02018"></a><span class="lineno"> 2018</span>  */</div><div class="line"><a name="l02019"></a><span class="lineno"> 2019</span>  function(const function& __x);</div><div class="line"><a name="l02020"></a><span class="lineno"> 2020</span> </div><div class="line"><a name="l02021"></a><span class="lineno"> 2021</span>  /**</div><div class="line"><a name="l02022"></a><span class="lineno"> 2022</span>  * @brief %Function move constructor.</div><div class="line"><a name="l02023"></a><span class="lineno"> 2023</span>  * @param __x A %function object rvalue with identical call signature.</div><div class="line"><a name="l02024"></a><span class="lineno"> 2024</span>  *</div><div class="line"><a name="l02025"></a><span class="lineno"> 2025</span>  * The newly-created %function contains the target of @a __x</div><div class="line"><a name="l02026"></a><span class="lineno"> 2026</span>  * (if it has one).</div><div class="line"><a name="l02027"></a><span class="lineno"> 2027</span>  */</div><div class="line"><a name="l02028"></a><span class="lineno"> 2028</span>  function(function&& __x) noexcept : _Function_base()</div><div class="line"><a name="l02029"></a><span class="lineno"> 2029</span>  {</div><div class="line"><a name="l02030"></a><span class="lineno"> 2030</span>  __x.swap(*this);</div><div class="line"><a name="l02031"></a><span class="lineno"> 2031</span>  }</div><div class="line"><a name="l02032"></a><span class="lineno"> 2032</span> </div><div class="line"><a name="l02033"></a><span class="lineno"> 2033</span>  // TODO: needs allocator_arg_t</div><div class="line"><a name="l02034"></a><span class="lineno"> 2034</span> </div><div class="line"><a name="l02035"></a><span class="lineno"> 2035</span>  /**</div><div class="line"><a name="l02036"></a><span class="lineno"> 2036</span>  * @brief Builds a %function that targets a copy of the incoming</div><div class="line"><a name="l02037"></a><span class="lineno"> 2037</span>  * function object.</div><div class="line"><a name="l02038"></a><span class="lineno"> 2038</span>  * @param __f A %function object that is callable with parameters of</div><div class="line"><a name="l02039"></a><span class="lineno"> 2039</span>  * type @c T1, @c T2, ..., @c TN and returns a value convertible</div><div class="line"><a name="l02040"></a><span class="lineno"> 2040</span>  * to @c Res.</div><div class="line"><a name="l02041"></a><span class="lineno"> 2041</span>  *</div><div class="line"><a name="l02042"></a><span class="lineno"> 2042</span>  * The newly-created %function object will target a copy of </div><div class="line"><a name="l02043"></a><span class="lineno"> 2043</span>  * @a __f. If @a __f is @c reference_wrapper<F>, then this function</div><div class="line"><a name="l02044"></a><span class="lineno"> 2044</span>  * object will contain a reference to the function object @c</div><div class="line"><a name="l02045"></a><span class="lineno"> 2045</span>  * __f.get(). If @a __f is a NULL function pointer or NULL</div><div class="line"><a name="l02046"></a><span class="lineno"> 2046</span>  * pointer-to-member, the newly-created object will be empty.</div><div class="line"><a name="l02047"></a><span class="lineno"> 2047</span>  *</div><div class="line"><a name="l02048"></a><span class="lineno"> 2048</span>  * If @a __f is a non-NULL function pointer or an object of type @c</div><div class="line"><a name="l02049"></a><span class="lineno"> 2049</span>  * reference_wrapper<F>, this function will not throw.</div><div class="line"><a name="l02050"></a><span class="lineno"> 2050</span>  */</div><div class="line"><a name="l02051"></a><span class="lineno"> 2051</span>  template<typename _Functor,</div><div class="line"><a name="l02052"></a><span class="lineno"> 2052</span>  typename = _Requires<__not_<is_same<_Functor, function>>, void>,</div><div class="line"><a name="l02053"></a><span class="lineno"> 2053</span>  typename = _Requires<_Callable<_Functor>, void>></div><div class="line"><a name="l02054"></a><span class="lineno"> 2054</span>  function(_Functor);</div><div class="line"><a name="l02055"></a><span class="lineno"> 2055</span> </div><div class="line"><a name="l02056"></a><span class="lineno"> 2056</span>  /**</div><div class="line"><a name="l02057"></a><span class="lineno"> 2057</span>  * @brief %Function assignment operator.</div><div class="line"><a name="l02058"></a><span class="lineno"> 2058</span>  * @param __x A %function with identical call signature.</div><div class="line"><a name="l02059"></a><span class="lineno"> 2059</span>  * @post @c (bool)*this == (bool)x</div><div class="line"><a name="l02060"></a><span class="lineno"> 2060</span>  * @returns @c *this</div><div class="line"><a name="l02061"></a><span class="lineno"> 2061</span>  *</div><div class="line"><a name="l02062"></a><span class="lineno"> 2062</span>  * The target of @a __x is copied to @c *this. If @a __x has no</div><div class="line"><a name="l02063"></a><span class="lineno"> 2063</span>  * target, then @c *this will be empty.</div><div class="line"><a name="l02064"></a><span class="lineno"> 2064</span>  *</div><div class="line"><a name="l02065"></a><span class="lineno"> 2065</span>  * If @a __x targets a function pointer or a reference to a function</div><div class="line"><a name="l02066"></a><span class="lineno"> 2066</span>  * object, then this operation will not throw an %exception.</div><div class="line"><a name="l02067"></a><span class="lineno"> 2067</span>  */</div><div class="line"><a name="l02068"></a><span class="lineno"> 2068</span>  function&</div><div class="line"><a name="l02069"></a><span class="lineno"> 2069</span>  operator=(const function& __x)</div><div class="line"><a name="l02070"></a><span class="lineno"> 2070</span>  {</div><div class="line"><a name="l02071"></a><span class="lineno"> 2071</span>  function(__x).swap(*this);</div><div class="line"><a name="l02072"></a><span class="lineno"> 2072</span>  return *this;</div><div class="line"><a name="l02073"></a><span class="lineno"> 2073</span>  }</div><div class="line"><a name="l02074"></a><span class="lineno"> 2074</span> </div><div class="line"><a name="l02075"></a><span class="lineno"> 2075</span>  /**</div><div class="line"><a name="l02076"></a><span class="lineno"> 2076</span>  * @brief %Function move-assignment operator.</div><div class="line"><a name="l02077"></a><span class="lineno"> 2077</span>  * @param __x A %function rvalue with identical call signature.</div><div class="line"><a name="l02078"></a><span class="lineno"> 2078</span>  * @returns @c *this</div><div class="line"><a name="l02079"></a><span class="lineno"> 2079</span>  *</div><div class="line"><a name="l02080"></a><span class="lineno"> 2080</span>  * The target of @a __x is moved to @c *this. If @a __x has no</div><div class="line"><a name="l02081"></a><span class="lineno"> 2081</span>  * target, then @c *this will be empty.</div><div class="line"><a name="l02082"></a><span class="lineno"> 2082</span>  *</div><div class="line"><a name="l02083"></a><span class="lineno"> 2083</span>  * If @a __x targets a function pointer or a reference to a function</div><div class="line"><a name="l02084"></a><span class="lineno"> 2084</span>  * object, then this operation will not throw an %exception.</div><div class="line"><a name="l02085"></a><span class="lineno"> 2085</span>  */</div><div class="line"><a name="l02086"></a><span class="lineno"> 2086</span>  function&</div><div class="line"><a name="l02087"></a><span class="lineno"> 2087</span>  operator=(function&& __x) noexcept</div><div class="line"><a name="l02088"></a><span class="lineno"> 2088</span>  {</div><div class="line"><a name="l02089"></a><span class="lineno"> 2089</span>  function(std::move(__x)).swap(*this);</div><div class="line"><a name="l02090"></a><span class="lineno"> 2090</span>  return *this;</div><div class="line"><a name="l02091"></a><span class="lineno"> 2091</span>  }</div><div class="line"><a name="l02092"></a><span class="lineno"> 2092</span> </div><div class="line"><a name="l02093"></a><span class="lineno"> 2093</span>  /**</div><div class="line"><a name="l02094"></a><span class="lineno"> 2094</span>  * @brief %Function assignment to zero.</div><div class="line"><a name="l02095"></a><span class="lineno"> 2095</span>  * @post @c !(bool)*this</div><div class="line"><a name="l02096"></a><span class="lineno"> 2096</span>  * @returns @c *this</div><div class="line"><a name="l02097"></a><span class="lineno"> 2097</span>  *</div><div class="line"><a name="l02098"></a><span class="lineno"> 2098</span>  * The target of @c *this is deallocated, leaving it empty.</div><div class="line"><a name="l02099"></a><span class="lineno"> 2099</span>  */</div><div class="line"><a name="l02100"></a><span class="lineno"> 2100</span>  function&</div><div class="line"><a name="l02101"></a><span class="lineno"> 2101</span>  operator=(nullptr_t) noexcept</div><div class="line"><a name="l02102"></a><span class="lineno"> 2102</span>  {</div><div class="line"><a name="l02103"></a><span class="lineno"> 2103</span>  if (_M_manager)</div><div class="line"><a name="l02104"></a><span class="lineno"> 2104</span>  {</div><div class="line"><a name="l02105"></a><span class="lineno"> 2105</span>  _M_manager(_M_functor, _M_functor, __destroy_functor);</div><div class="line"><a name="l02106"></a><span class="lineno"> 2106</span>  _M_manager = nullptr;</div><div class="line"><a name="l02107"></a><span class="lineno"> 2107</span>  _M_invoker = nullptr;</div><div class="line"><a name="l02108"></a><span class="lineno"> 2108</span>  }</div><div class="line"><a name="l02109"></a><span class="lineno"> 2109</span>  return *this;</div><div class="line"><a name="l02110"></a><span class="lineno"> 2110</span>  }</div><div class="line"><a name="l02111"></a><span class="lineno"> 2111</span> </div><div class="line"><a name="l02112"></a><span class="lineno"> 2112</span>  /**</div><div class="line"><a name="l02113"></a><span class="lineno"> 2113</span>  * @brief %Function assignment to a new target.</div><div class="line"><a name="l02114"></a><span class="lineno"> 2114</span>  * @param __f A %function object that is callable with parameters of</div><div class="line"><a name="l02115"></a><span class="lineno"> 2115</span>  * type @c T1, @c T2, ..., @c TN and returns a value convertible</div><div class="line"><a name="l02116"></a><span class="lineno"> 2116</span>  * to @c Res.</div><div class="line"><a name="l02117"></a><span class="lineno"> 2117</span>  * @return @c *this</div><div class="line"><a name="l02118"></a><span class="lineno"> 2118</span>  *</div><div class="line"><a name="l02119"></a><span class="lineno"> 2119</span>  * This %function object wrapper will target a copy of @a</div><div class="line"><a name="l02120"></a><span class="lineno"> 2120</span>  * __f. If @a __f is @c reference_wrapper<F>, then this function</div><div class="line"><a name="l02121"></a><span class="lineno"> 2121</span>  * object will contain a reference to the function object @c</div><div class="line"><a name="l02122"></a><span class="lineno"> 2122</span>  * __f.get(). If @a __f is a NULL function pointer or NULL</div><div class="line"><a name="l02123"></a><span class="lineno"> 2123</span>  * pointer-to-member, @c this object will be empty.</div><div class="line"><a name="l02124"></a><span class="lineno"> 2124</span>  *</div><div class="line"><a name="l02125"></a><span class="lineno"> 2125</span>  * If @a __f is a non-NULL function pointer or an object of type @c</div><div class="line"><a name="l02126"></a><span class="lineno"> 2126</span>  * reference_wrapper<F>, this function will not throw.</div><div class="line"><a name="l02127"></a><span class="lineno"> 2127</span>  */</div><div class="line"><a name="l02128"></a><span class="lineno"> 2128</span>  template<typename _Functor></div><div class="line"><a name="l02129"></a><span class="lineno"> 2129</span>  _Requires<_Callable<typename decay<_Functor>::type>, function&></div><div class="line"><a name="l02130"></a><span class="lineno"> 2130</span>  operator=(_Functor&& __f)</div><div class="line"><a name="l02131"></a><span class="lineno"> 2131</span>  {</div><div class="line"><a name="l02132"></a><span class="lineno"> 2132</span>  function(std::forward<_Functor>(__f)).swap(*this);</div><div class="line"><a name="l02133"></a><span class="lineno"> 2133</span>  return *this;</div><div class="line"><a name="l02134"></a><span class="lineno"> 2134</span>  }</div><div class="line"><a name="l02135"></a><span class="lineno"> 2135</span> </div><div class="line"><a name="l02136"></a><span class="lineno"> 2136</span>  /// @overload</div><div class="line"><a name="l02137"></a><span class="lineno"> 2137</span>  template<typename _Functor></div><div class="line"><a name="l02138"></a><span class="lineno"> 2138</span>  function&</div><div class="line"><a name="l02139"></a><span class="lineno"> 2139</span>  operator=(reference_wrapper<_Functor> __f) noexcept</div><div class="line"><a name="l02140"></a><span class="lineno"> 2140</span>  {</div><div class="line"><a name="l02141"></a><span class="lineno"> 2141</span>  function(__f).swap(*this);</div><div class="line"><a name="l02142"></a><span class="lineno"> 2142</span>  return *this;</div><div class="line"><a name="l02143"></a><span class="lineno"> 2143</span>  }</div><div class="line"><a name="l02144"></a><span class="lineno"> 2144</span> </div><div class="line"><a name="l02145"></a><span class="lineno"> 2145</span>  // [3.7.2.2] function modifiers</div><div class="line"><a name="l02146"></a><span class="lineno"> 2146</span> </div><div class="line"><a name="l02147"></a><span class="lineno"> 2147</span>  /**</div><div class="line"><a name="l02148"></a><span class="lineno"> 2148</span>  * @brief Swap the targets of two %function objects.</div><div class="line"><a name="l02149"></a><span class="lineno"> 2149</span>  * @param __x A %function with identical call signature.</div><div class="line"><a name="l02150"></a><span class="lineno"> 2150</span>  *</div><div class="line"><a name="l02151"></a><span class="lineno"> 2151</span>  * Swap the targets of @c this function object and @a __f. This</div><div class="line"><a name="l02152"></a><span class="lineno"> 2152</span>  * function will not throw an %exception.</div><div class="line"><a name="l02153"></a><span class="lineno"> 2153</span>  */</div><div class="line"><a name="l02154"></a><span class="lineno"> 2154</span>  void swap(function& __x) noexcept</div><div class="line"><a name="l02155"></a><span class="lineno"> 2155</span>  {</div><div class="line"><a name="l02156"></a><span class="lineno"> 2156</span>  std::swap(_M_functor, __x._M_functor);</div><div class="line"><a name="l02157"></a><span class="lineno"> 2157</span>  std::swap(_M_manager, __x._M_manager);</div><div class="line"><a name="l02158"></a><span class="lineno"> 2158</span>  std::swap(_M_invoker, __x._M_invoker);</div><div class="line"><a name="l02159"></a><span class="lineno"> 2159</span>  }</div><div class="line"><a name="l02160"></a><span class="lineno"> 2160</span> </div><div class="line"><a name="l02161"></a><span class="lineno"> 2161</span>  // TODO: needs allocator_arg_t</div><div class="line"><a name="l02162"></a><span class="lineno"> 2162</span>  /*</div><div class="line"><a name="l02163"></a><span class="lineno"> 2163</span>  template<typename _Functor, typename _Alloc></div><div class="line"><a name="l02164"></a><span class="lineno"> 2164</span>  void</div><div class="line"><a name="l02165"></a><span class="lineno"> 2165</span>  assign(_Functor&& __f, const _Alloc& __a)</div><div class="line"><a name="l02166"></a><span class="lineno"> 2166</span>  {</div><div class="line"><a name="l02167"></a><span class="lineno"> 2167</span>  function(allocator_arg, __a,</div><div class="line"><a name="l02168"></a><span class="lineno"> 2168</span>  std::forward<_Functor>(__f)).swap(*this);</div><div class="line"><a name="l02169"></a><span class="lineno"> 2169</span>  }</div><div class="line"><a name="l02170"></a><span class="lineno"> 2170</span>  */</div><div class="line"><a name="l02171"></a><span class="lineno"> 2171</span> </div><div class="line"><a name="l02172"></a><span class="lineno"> 2172</span>  // [3.7.2.3] function capacity</div><div class="line"><a name="l02173"></a><span class="lineno"> 2173</span> </div><div class="line"><a name="l02174"></a><span class="lineno"> 2174</span>  /**</div><div class="line"><a name="l02175"></a><span class="lineno"> 2175</span>  * @brief Determine if the %function wrapper has a target.</div><div class="line"><a name="l02176"></a><span class="lineno"> 2176</span>  *</div><div class="line"><a name="l02177"></a><span class="lineno"> 2177</span>  * @return @c true when this %function object contains a target,</div><div class="line"><a name="l02178"></a><span class="lineno"> 2178</span>  * or @c false when it is empty.</div><div class="line"><a name="l02179"></a><span class="lineno"> 2179</span>  *</div><div class="line"><a name="l02180"></a><span class="lineno"> 2180</span>  * This function will not throw an %exception.</div><div class="line"><a name="l02181"></a><span class="lineno"> 2181</span>  */</div><div class="line"><a name="l02182"></a><span class="lineno"> 2182</span>  explicit operator bool() const noexcept</div><div class="line"><a name="l02183"></a><span class="lineno"> 2183</span>  { return !_M_empty(); }</div><div class="line"><a name="l02184"></a><span class="lineno"> 2184</span> </div><div class="line"><a name="l02185"></a><span class="lineno"> 2185</span>  // [3.7.2.4] function invocation</div><div class="line"><a name="l02186"></a><span class="lineno"> 2186</span> </div><div class="line"><a name="l02187"></a><span class="lineno"> 2187</span>  /**</div><div class="line"><a name="l02188"></a><span class="lineno"> 2188</span>  * @brief Invokes the function targeted by @c *this.</div><div class="line"><a name="l02189"></a><span class="lineno"> 2189</span>  * @returns the result of the target.</div><div class="line"><a name="l02190"></a><span class="lineno"> 2190</span>  * @throws bad_function_call when @c !(bool)*this</div><div class="line"><a name="l02191"></a><span class="lineno"> 2191</span>  *</div><div class="line"><a name="l02192"></a><span class="lineno"> 2192</span>  * The function call operator invokes the target function object</div><div class="line"><a name="l02193"></a><span class="lineno"> 2193</span>  * stored by @c this.</div><div class="line"><a name="l02194"></a><span class="lineno"> 2194</span>  */</div><div class="line"><a name="l02195"></a><span class="lineno"> 2195</span>  _Res operator()(_ArgTypes... __args) const;</div><div class="line"><a name="l02196"></a><span class="lineno"> 2196</span> </div><div class="line"><a name="l02197"></a><span class="lineno"> 2197</span> #if __cpp_rtti</div><div class="line"><a name="l02198"></a><span class="lineno"> 2198</span>  // [3.7.2.5] function target access</div><div class="line"><a name="l02199"></a><span class="lineno"> 2199</span>  /**</div><div class="line"><a name="l02200"></a><span class="lineno"> 2200</span>  * @brief Determine the type of the target of this function object</div><div class="line"><a name="l02201"></a><span class="lineno"> 2201</span>  * wrapper.</div><div class="line"><a name="l02202"></a><span class="lineno"> 2202</span>  *</div><div class="line"><a name="l02203"></a><span class="lineno"> 2203</span>  * @returns the type identifier of the target function object, or</div><div class="line"><a name="l02204"></a><span class="lineno"> 2204</span>  * @c typeid(void) if @c !(bool)*this.</div><div class="line"><a name="l02205"></a><span class="lineno"> 2205</span>  *</div><div class="line"><a name="l02206"></a><span class="lineno"> 2206</span>  * This function will not throw an %exception.</div><div class="line"><a name="l02207"></a><span class="lineno"> 2207</span>  */</div><div class="line"><a name="l02208"></a><span class="lineno"> 2208</span>  const type_info& target_type() const noexcept;</div><div class="line"><a name="l02209"></a><span class="lineno"> 2209</span> </div><div class="line"><a name="l02210"></a><span class="lineno"> 2210</span>  /**</div><div class="line"><a name="l02211"></a><span class="lineno"> 2211</span>  * @brief Access the stored target function object.</div><div class="line"><a name="l02212"></a><span class="lineno"> 2212</span>  *</div><div class="line"><a name="l02213"></a><span class="lineno"> 2213</span>  * @return Returns a pointer to the stored target function object,</div><div class="line"><a name="l02214"></a><span class="lineno"> 2214</span>  * if @c typeid(Functor).equals(target_type()); otherwise, a NULL</div><div class="line"><a name="l02215"></a><span class="lineno"> 2215</span>  * pointer.</div><div class="line"><a name="l02216"></a><span class="lineno"> 2216</span>  *</div><div class="line"><a name="l02217"></a><span class="lineno"> 2217</span>  * This function will not throw an %exception.</div><div class="line"><a name="l02218"></a><span class="lineno"> 2218</span>  */</div><div class="line"><a name="l02219"></a><span class="lineno"> 2219</span>  template<typename _Functor> _Functor* target() noexcept;</div><div class="line"><a name="l02220"></a><span class="lineno"> 2220</span> </div><div class="line"><a name="l02221"></a><span class="lineno"> 2221</span>  /// @overload</div><div class="line"><a name="l02222"></a><span class="lineno"> 2222</span>  template<typename _Functor> const _Functor* target() const noexcept;</div><div class="line"><a name="l02223"></a><span class="lineno"> 2223</span> #endif</div><div class="line"><a name="l02224"></a><span class="lineno"> 2224</span> </div><div class="line"><a name="l02225"></a><span class="lineno"> 2225</span>  private:</div><div class="line"><a name="l02226"></a><span class="lineno"> 2226</span>  using _Invoker_type = _Res (*)(const _Any_data&, _ArgTypes&&...);</div><div class="line"><a name="l02227"></a><span class="lineno"> 2227</span>  _Invoker_type _M_invoker;</div><div class="line"><a name="l02228"></a><span class="lineno"> 2228</span>  };</div><div class="line"><a name="l02229"></a><span class="lineno"> 2229</span> </div><div class="line"><a name="l02230"></a><span class="lineno"> 2230</span>  // Out-of-line member definitions.</div><div class="line"><a name="l02231"></a><span class="lineno"> 2231</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l02232"></a><span class="lineno"> 2232</span>  function<_Res(_ArgTypes...)>::</div><div class="line"><a name="l02233"></a><span class="lineno"> 2233</span>  function(const function& __x)</div><div class="line"><a name="l02234"></a><span class="lineno"> 2234</span>  : _Function_base()</div><div class="line"><a name="l02235"></a><span class="lineno"> 2235</span>  {</div><div class="line"><a name="l02236"></a><span class="lineno"> 2236</span>  if (static_cast<bool>(__x))</div><div class="line"><a name="l02237"></a><span class="lineno"> 2237</span>  {</div><div class="line"><a name="l02238"></a><span class="lineno"> 2238</span>  __x._M_manager(_M_functor, __x._M_functor, __clone_functor);</div><div class="line"><a name="l02239"></a><span class="lineno"> 2239</span>  _M_invoker = __x._M_invoker;</div><div class="line"><a name="l02240"></a><span class="lineno"> 2240</span>  _M_manager = __x._M_manager;</div><div class="line"><a name="l02241"></a><span class="lineno"> 2241</span>  }</div><div class="line"><a name="l02242"></a><span class="lineno"> 2242</span>  }</div><div class="line"><a name="l02243"></a><span class="lineno"> 2243</span> </div><div class="line"><a name="l02244"></a><span class="lineno"> 2244</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l02245"></a><span class="lineno"> 2245</span>  template<typename _Functor, typename, typename></div><div class="line"><a name="l02246"></a><span class="lineno"> 2246</span>  function<_Res(_ArgTypes...)>::</div><div class="line"><a name="l02247"></a><span class="lineno"> 2247</span>  function(_Functor __f)</div><div class="line"><a name="l02248"></a><span class="lineno"> 2248</span>  : _Function_base()</div><div class="line"><a name="l02249"></a><span class="lineno"> 2249</span>  {</div><div class="line"><a name="l02250"></a><span class="lineno"> 2250</span>  typedef _Function_handler<_Signature_type, _Functor> _My_handler;</div><div class="line"><a name="l02251"></a><span class="lineno"> 2251</span> </div><div class="line"><a name="l02252"></a><span class="lineno"> 2252</span>  if (_My_handler::_M_not_empty_function(__f))</div><div class="line"><a name="l02253"></a><span class="lineno"> 2253</span>  {</div><div class="line"><a name="l02254"></a><span class="lineno"> 2254</span>  _My_handler::_M_init_functor(_M_functor, std::move(__f));</div><div class="line"><a name="l02255"></a><span class="lineno"> 2255</span>  _M_invoker = &_My_handler::_M_invoke;</div><div class="line"><a name="l02256"></a><span class="lineno"> 2256</span>  _M_manager = &_My_handler::_M_manager;</div><div class="line"><a name="l02257"></a><span class="lineno"> 2257</span>  }</div><div class="line"><a name="l02258"></a><span class="lineno"> 2258</span>  }</div><div class="line"><a name="l02259"></a><span class="lineno"> 2259</span> </div><div class="line"><a name="l02260"></a><span class="lineno"> 2260</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l02261"></a><span class="lineno"> 2261</span>  _Res</div><div class="line"><a name="l02262"></a><span class="lineno"> 2262</span>  function<_Res(_ArgTypes...)>::</div><div class="line"><a name="l02263"></a><span class="lineno"> 2263</span>  operator()(_ArgTypes... __args) const</div><div class="line"><a name="l02264"></a><span class="lineno"> 2264</span>  {</div><div class="line"><a name="l02265"></a><span class="lineno"> 2265</span>  if (_M_empty())</div><div class="line"><a name="l02266"></a><span class="lineno"> 2266</span>  __throw_bad_function_call();</div><div class="line"><a name="l02267"></a><span class="lineno"> 2267</span>  return _M_invoker(_M_functor, std::forward<_ArgTypes>(__args)...);</div><div class="line"><a name="l02268"></a><span class="lineno"> 2268</span>  }</div><div class="line"><a name="l02269"></a><span class="lineno"> 2269</span> </div><div class="line"><a name="l02270"></a><span class="lineno"> 2270</span> #if __cpp_rtti</div><div class="line"><a name="l02271"></a><span class="lineno"> 2271</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l02272"></a><span class="lineno"> 2272</span>  const type_info&</div><div class="line"><a name="l02273"></a><span class="lineno"> 2273</span>  function<_Res(_ArgTypes...)>::</div><div class="line"><a name="l02274"></a><span class="lineno"> 2274</span>  target_type() const noexcept</div><div class="line"><a name="l02275"></a><span class="lineno"> 2275</span>  {</div><div class="line"><a name="l02276"></a><span class="lineno"> 2276</span>  if (_M_manager)</div><div class="line"><a name="l02277"></a><span class="lineno"> 2277</span>  {</div><div class="line"><a name="l02278"></a><span class="lineno"> 2278</span>  _Any_data __typeinfo_result;</div><div class="line"><a name="l02279"></a><span class="lineno"> 2279</span>  _M_manager(__typeinfo_result, _M_functor, __get_type_info);</div><div class="line"><a name="l02280"></a><span class="lineno"> 2280</span>  return *__typeinfo_result._M_access<const type_info*>();</div><div class="line"><a name="l02281"></a><span class="lineno"> 2281</span>  }</div><div class="line"><a name="l02282"></a><span class="lineno"> 2282</span>  else</div><div class="line"><a name="l02283"></a><span class="lineno"> 2283</span>  return typeid(void);</div><div class="line"><a name="l02284"></a><span class="lineno"> 2284</span>  }</div><div class="line"><a name="l02285"></a><span class="lineno"> 2285</span> </div><div class="line"><a name="l02286"></a><span class="lineno"> 2286</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l02287"></a><span class="lineno"> 2287</span>  template<typename _Functor></div><div class="line"><a name="l02288"></a><span class="lineno"> 2288</span>  _Functor*</div><div class="line"><a name="l02289"></a><span class="lineno"> 2289</span>  function<_Res(_ArgTypes...)>::</div><div class="line"><a name="l02290"></a><span class="lineno"> 2290</span>  target() noexcept</div><div class="line"><a name="l02291"></a><span class="lineno"> 2291</span>  {</div><div class="line"><a name="l02292"></a><span class="lineno"> 2292</span>  if (typeid(_Functor) == target_type() && _M_manager)</div><div class="line"><a name="l02293"></a><span class="lineno"> 2293</span>  {</div><div class="line"><a name="l02294"></a><span class="lineno"> 2294</span>  _Any_data __ptr;</div><div class="line"><a name="l02295"></a><span class="lineno"> 2295</span>  if (_M_manager(__ptr, _M_functor, __get_functor_ptr)</div><div class="line"><a name="l02296"></a><span class="lineno"> 2296</span>  && !is_const<_Functor>::value)</div><div class="line"><a name="l02297"></a><span class="lineno"> 2297</span>  return 0;</div><div class="line"><a name="l02298"></a><span class="lineno"> 2298</span>  else</div><div class="line"><a name="l02299"></a><span class="lineno"> 2299</span>  return __ptr._M_access<_Functor*>();</div><div class="line"><a name="l02300"></a><span class="lineno"> 2300</span>  }</div><div class="line"><a name="l02301"></a><span class="lineno"> 2301</span>  else</div><div class="line"><a name="l02302"></a><span class="lineno"> 2302</span>  return 0;</div><div class="line"><a name="l02303"></a><span class="lineno"> 2303</span>  }</div><div class="line"><a name="l02304"></a><span class="lineno"> 2304</span> </div><div class="line"><a name="l02305"></a><span class="lineno"> 2305</span>  template<typename _Res, typename... _ArgTypes></div><div class="line"><a name="l02306"></a><span class="lineno"> 2306</span>  template<typename _Functor></div><div class="line"><a name="l02307"></a><span class="lineno"> 2307</span>  const _Functor*</div><div class="line"><a name="l02308"></a><span class="lineno"> 2308</span>  function<_Res(_ArgTypes...)>::</div><div class="line"><a name="l02309"></a><span class="lineno"> 2309</span>  target() const noexcept</div><div class="line"><a name="l02310"></a><span class="lineno"> 2310</span>  {</div><div class="line"><a name="l02311"></a><span class="lineno"> 2311</span>  if (typeid(_Functor) == target_type() && _M_manager)</div><div class="line"><a name="l02312"></a><span class="lineno"> 2312</span>  {</div><div class="line"><a name="l02313"></a><span class="lineno"> 2313</span>  _Any_data __ptr;</div><div class="line"><a name="l02314"></a><span class="lineno"> 2314</span>  _M_manager(__ptr, _M_functor, __get_functor_ptr);</div><div class="line"><a name="l02315"></a><span class="lineno"> 2315</span>  return __ptr._M_access<const _Functor*>();</div><div class="line"><a name="l02316"></a><span class="lineno"> 2316</span>  }</div><div class="line"><a name="l02317"></a><span class="lineno"> 2317</span>  else</div><div class="line"><a name="l02318"></a><span class="lineno"> 2318</span>  return 0;</div><div class="line"><a name="l02319"></a><span class="lineno"> 2319</span>  }</div><div class="line"><a name="l02320"></a><span class="lineno"> 2320</span> #endif</div><div class="line"><a name="l02321"></a><span class="lineno"> 2321</span> </div><div class="line"><a name="l02322"></a><span class="lineno"> 2322</span>  // [20.7.15.2.6] null pointer comparisons</div><div class="line"><a name="l02323"></a><span class="lineno"> 2323</span> </div><div class="line"><a name="l02324"></a><span class="lineno"> 2324</span>  /**</div><div class="line"><a name="l02325"></a><span class="lineno"> 2325</span>  * @brief Compares a polymorphic function object wrapper against 0</div><div class="line"><a name="l02326"></a><span class="lineno"> 2326</span>  * (the NULL pointer).</div><div class="line"><a name="l02327"></a><span class="lineno"> 2327</span>  * @returns @c true if the wrapper has no target, @c false otherwise</div><div class="line"><a name="l02328"></a><span class="lineno"> 2328</span>  *</div><div class="line"><a name="l02329"></a><span class="lineno"> 2329</span>  * This function will not throw an %exception.</div><div class="line"><a name="l02330"></a><span class="lineno"> 2330</span>  */</div><div class="line"><a name="l02331"></a><span class="lineno"> 2331</span>  template<typename _Res, typename... _Args></div><div class="line"><a name="l02332"></a><span class="lineno"> 2332</span>  inline bool</div><div class="line"><a name="l02333"></a><span class="lineno"> 2333</span>  operator==(const function<_Res(_Args...)>& __f, nullptr_t) noexcept</div><div class="line"><a name="l02334"></a><span class="lineno"> 2334</span>  { return !static_cast<bool>(__f); }</div><div class="line"><a name="l02335"></a><span class="lineno"> 2335</span> </div><div class="line"><a name="l02336"></a><span class="lineno"> 2336</span>  /// @overload</div><div class="line"><a name="l02337"></a><span class="lineno"> 2337</span>  template<typename _Res, typename... _Args></div><div class="line"><a name="l02338"></a><span class="lineno"> 2338</span>  inline bool</div><div class="line"><a name="l02339"></a><span class="lineno"> 2339</span>  operator==(nullptr_t, const function<_Res(_Args...)>& __f) noexcept</div><div class="line"><a name="l02340"></a><span class="lineno"> 2340</span>  { return !static_cast<bool>(__f); }</div><div class="line"><a name="l02341"></a><span class="lineno"> 2341</span> </div><div class="line"><a name="l02342"></a><span class="lineno"> 2342</span>  /**</div><div class="line"><a name="l02343"></a><span class="lineno"> 2343</span>  * @brief Compares a polymorphic function object wrapper against 0</div><div class="line"><a name="l02344"></a><span class="lineno"> 2344</span>  * (the NULL pointer).</div><div class="line"><a name="l02345"></a><span class="lineno"> 2345</span>  * @returns @c false if the wrapper has no target, @c true otherwise</div><div class="line"><a name="l02346"></a><span class="lineno"> 2346</span>  *</div><div class="line"><a name="l02347"></a><span class="lineno"> 2347</span>  * This function will not throw an %exception.</div><div class="line"><a name="l02348"></a><span class="lineno"> 2348</span>  */</div><div class="line"><a name="l02349"></a><span class="lineno"> 2349</span>  template<typename _Res, typename... _Args></div><div class="line"><a name="l02350"></a><span class="lineno"> 2350</span>  inline bool</div><div class="line"><a name="l02351"></a><span class="lineno"> 2351</span>  operator!=(const function<_Res(_Args...)>& __f, nullptr_t) noexcept</div><div class="line"><a name="l02352"></a><span class="lineno"> 2352</span>  { return static_cast<bool>(__f); }</div><div class="line"><a name="l02353"></a><span class="lineno"> 2353</span> </div><div class="line"><a name="l02354"></a><span class="lineno"> 2354</span>  /// @overload</div><div class="line"><a name="l02355"></a><span class="lineno"> 2355</span>  template<typename _Res, typename... _Args></div><div class="line"><a name="l02356"></a><span class="lineno"> 2356</span>  inline bool</div><div class="line"><a name="l02357"></a><span class="lineno"> 2357</span>  operator!=(nullptr_t, const function<_Res(_Args...)>& __f) noexcept</div><div class="line"><a name="l02358"></a><span class="lineno"> 2358</span>  { return static_cast<bool>(__f); }</div><div class="line"><a name="l02359"></a><span class="lineno"> 2359</span> </div><div class="line"><a name="l02360"></a><span class="lineno"> 2360</span>  // [20.7.15.2.7] specialized algorithms</div><div class="line"><a name="l02361"></a><span class="lineno"> 2361</span> </div><div class="line"><a name="l02362"></a><span class="lineno"> 2362</span>  /**</div><div class="line"><a name="l02363"></a><span class="lineno"> 2363</span>  * @brief Swap the targets of two polymorphic function object wrappers.</div><div class="line"><a name="l02364"></a><span class="lineno"> 2364</span>  *</div><div class="line"><a name="l02365"></a><span class="lineno"> 2365</span>  * This function will not throw an %exception.</div><div class="line"><a name="l02366"></a><span class="lineno"> 2366</span>  */</div><div class="line"><a name="l02367"></a><span class="lineno"> 2367</span>  // _GLIBCXX_RESOLVE_LIB_DEFECTS</div><div class="line"><a name="l02368"></a><span class="lineno"> 2368</span>  // 2062. Effect contradictions w/o no-throw guarantee of std::function swaps</div><div class="line"><a name="l02369"></a><span class="lineno"> 2369</span>  template<typename _Res, typename... _Args></div><div class="line"><a name="l02370"></a><span class="lineno"> 2370</span>  inline void</div><div class="line"><a name="l02371"></a><span class="lineno"> 2371</span>  swap(function<_Res(_Args...)>& __x, function<_Res(_Args...)>& __y) noexcept</div><div class="line"><a name="l02372"></a><span class="lineno"> 2372</span>  { __x.swap(__y); }</div><div class="line"><a name="l02373"></a><span class="lineno"> 2373</span> </div><div class="line"><a name="l02374"></a><span class="lineno"> 2374</span> _GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l02375"></a><span class="lineno"> 2375</span> } // namespace std</div><div class="line"><a name="l02376"></a><span class="lineno"> 2376</span> </div><div class="line"><a name="l02377"></a><span class="lineno"> 2377</span> #endif // C++11</div><div class="line"><a name="l02378"></a><span class="lineno"> 2378</span> </div><div class="line"><a name="l02379"></a><span class="lineno"> 2379</span> #endif // _GLIBCXX_FUNCTIONAL</div></div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
<ul>
<li class="navelem"><a class="el" href="dir_3a83f109ff04170a1f8448445d1bdcba.html">include</a></li><li class="navelem"><a class="el" href="a00065.html">functional</a></li>
<li class="footer">Generated by
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.13 </li>
</ul>
</div>
</body>
</html>
