mirror of
https://github.com/boostorg/gil.git
synced 2026-01-24 05:52:13 +00:00
237 lines
35 KiB
HTML
237 lines
35 KiB
HTML
<!-- HTML header for doxygen 1.8.13-->
|
|
<!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 1.8.6"/>
|
|
<meta name="viewport" content="width=device-width, initial-scale=1"/>
|
|
<title>Generic Image Library: variant.hpp 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="doxygen.css" rel="stylesheet" type="text/css" />
|
|
<link href="doxygen-boost.css" rel="stylesheet" type="text/css"/>
|
|
</head>
|
|
<body>
|
|
<div class="boost-header">
|
|
<table border="0" cellpadding="7" cellspacing="0" width="100%" summary="header">
|
|
<tr>
|
|
<td valign="top" width="300">
|
|
<h3><a href="../index.html"><img alt="Boost GIL" src="../_static/gil.png" border="0"></a></h3>
|
|
</td>
|
|
<td ><h1 align="center"><a href="../index.html"></a></h1></td>
|
|
<td></td>
|
|
</tr>
|
|
</table>
|
|
</div>
|
|
<hr/>
|
|
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
|
|
<!-- Generated by Doxygen 1.8.6 -->
|
|
<div id="navrow1" class="tabs">
|
|
<ul class="tablist">
|
|
<li><a href="index.html"><span>Main Page</span></a></li>
|
|
<li><a href="modules.html"><span>Modules</span></a></li>
|
|
<li><a href="annotated.html"><span>Classes</span></a></li>
|
|
<li class="current"><a href="files.html"><span>Files</span></a></li>
|
|
</ul>
|
|
</div>
|
|
<div id="navrow2" class="tabs2">
|
|
<ul class="tablist">
|
|
<li><a href="files.html"><span>File List</span></a></li>
|
|
</ul>
|
|
</div>
|
|
<div id="nav-path" class="navpath">
|
|
<ul>
|
|
<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_1878a3f4746a95c6aad317458cc7ef80.html">boost</a></li><li class="navelem"><a class="el" href="dir_df4750f408086f9b9c1b5ee4251365ff.html">gil</a></li><li class="navelem"><a class="el" href="dir_0f86d4ff96b1aea424a4a0f509d03bc0.html">extension</a></li><li class="navelem"><a class="el" href="dir_1a56ea1a3a929887046b273f6b45aa06.html">dynamic_image</a></li> </ul>
|
|
</div>
|
|
</div><!-- top -->
|
|
<div class="header">
|
|
<div class="headertitle">
|
|
<div class="title">variant.hpp</div> </div>
|
|
</div><!--header-->
|
|
<div class="contents">
|
|
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Copyright 2005-2007 Adobe Systems Incorporated</span></div>
|
|
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// Distributed under the Boost Software License, Version 1.0</span></div>
|
|
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// See accompanying file LICENSE_1_0.txt or copy at</span></div>
|
|
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// http://www.boost.org/LICENSE_1_0.txt</span></div>
|
|
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#ifndef BOOST_GIL_EXTENSION_DYNAMIC_IMAGE_VARIANT_HPP</span></div>
|
|
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor"></span><span class="preprocessor">#define BOOST_GIL_EXTENSION_DYNAMIC_IMAGE_VARIANT_HPP</span></div>
|
|
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor"></span></div>
|
|
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// TODO: Replace with C++17 std::variant?</span></div>
|
|
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div>
|
|
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <boost/gil/utilities.hpp></span></div>
|
|
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div>
|
|
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <boost/bind.hpp></span></div>
|
|
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <boost/mpl/at.hpp></span></div>
|
|
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <boost/mpl/bool.hpp></span></div>
|
|
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include <boost/mpl/fold.hpp></span></div>
|
|
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <boost/mpl/max.hpp></span></div>
|
|
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <boost/mpl/size.hpp></span></div>
|
|
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <boost/mpl/sizeof.hpp></span></div>
|
|
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <boost/mpl/transform.hpp></span></div>
|
|
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <boost/utility/enable_if.hpp></span></div>
|
|
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div>
|
|
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <algorithm></span></div>
|
|
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <cassert></span></div>
|
|
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <cstddef></span></div>
|
|
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <typeinfo></span></div>
|
|
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div>
|
|
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {</div>
|
|
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div>
|
|
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">// Support for run-time instantiated types</span></div>
|
|
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div>
|
|
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">namespace </span>detail {</div>
|
|
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Types, <span class="keyword">typename</span> T> <span class="keyword">struct </span>type_to_index;</div>
|
|
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Op, <span class="keyword">typename</span> T> <span class="keyword">struct </span>reduce;</div>
|
|
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keyword">struct </span>destructor_op {</div>
|
|
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keyword">typedef</span> <span class="keywordtype">void</span> result_type;</div>
|
|
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T> result_type operator()(<span class="keyword">const</span> T& t)<span class="keyword"> const </span>{ t.~T(); }</div>
|
|
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  };</div>
|
|
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T, <span class="keyword">typename</span> Bits> <span class="keywordtype">void</span> copy_construct_in_place(<span class="keyword">const</span> T& t, Bits& bits);</div>
|
|
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Bits> <span class="keyword">struct </span>copy_construct_in_place_fn;</div>
|
|
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Types> <span class="keyword">struct </span>type_to_index_fn;</div>
|
|
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> }</div>
|
|
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="keyword">template</span> <<span class="keyword">typename</span> Types> <span class="comment">// models MPL Random Access Container</span></div>
|
|
<div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1variant.html"> 80</a></span> <span class="keyword">class </span><a class="code" href="classboost_1_1gil_1_1variant.html">variant</a> {</div>
|
|
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// size in bytes of the largest type in Types</span></div>
|
|
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keyword">static</span> <span class="keyword">const</span> std::size_t MAX_SIZE = mpl::fold<Types, mpl::size_t<0>, mpl::max<mpl::_1, mpl::sizeof_<mpl::_2> > >::type::value;</div>
|
|
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keyword">static</span> <span class="keyword">const</span> std::size_t NUM_TYPES = mpl::size<Types>::value;</div>
|
|
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="keyword">public</span>:</div>
|
|
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">typedef</span> Types types_t;</div>
|
|
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div>
|
|
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keyword">typedef</span> <span class="keyword">struct </span>{ <span class="keywordtype">char</span> data[MAX_SIZE]; } base_t; <span class="comment">// empty space equal to the size of the largest type in Types</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>  <span class="comment">// Default constructor - default construct the first type</span></div>
|
|
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <a class="code" href="classboost_1_1gil_1_1variant.html">variant</a>() : _index(0) { <span class="keyword">new</span>(&_bits) <span class="keyword">typename</span> mpl::at_c<Types,0>::type(); }</div>
|
|
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keyword">virtual</span> ~<a class="code" href="classboost_1_1gil_1_1variant.html">variant</a>() { apply_operation(*<span class="keyword">this</span>, detail::destructor_op()); }</div>
|
|
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div>
|
|
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// Throws std::bad_cast if T is not in Types</span></div>
|
|
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T> <span class="keyword">explicit</span> <a class="code" href="classboost_1_1gil_1_1variant.html">variant</a>(<span class="keyword">const</span> T& obj){ _index=type_id<T>(); <span class="keywordflow">if</span> (_index==NUM_TYPES) <span class="keywordflow">throw</span> std::bad_cast(); detail::copy_construct_in_place(obj, _bits); }</div>
|
|
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
|
|
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Types2> <span class="keyword">explicit</span> <a class="code" href="classboost_1_1gil_1_1variant.html">variant</a>(<span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1variant.html">variant<Types2></a>& obj) : _index(apply_operation(obj,detail::type_to_index_fn<Types>())) {</div>
|
|
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">if</span> (_index==NUM_TYPES) <span class="keywordflow">throw</span> std::bad_cast();</div>
|
|
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  apply_operation(obj, detail::copy_construct_in_place_fn<base_t>(_bits));</div>
|
|
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  }</div>
|
|
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div>
|
|
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">// When doSwap is true, swaps obj with the contents of the variant. obj will contain default-constructed instance after the call</span></div>
|
|
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T> <span class="keyword">explicit</span> <a class="code" href="classboost_1_1gil_1_1variant.html">variant</a>(T& obj, <span class="keywordtype">bool</span> do_swap);</div>
|
|
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
|
|
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T> <a class="code" href="classboost_1_1gil_1_1variant.html">variant</a>& operator=(<span class="keyword">const</span> T& obj) { <a class="code" href="classboost_1_1gil_1_1variant.html">variant</a> tmp(obj); swap(*<span class="keyword">this</span>,tmp); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
|
|
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <a class="code" href="classboost_1_1gil_1_1variant.html">variant</a>& operator=(<span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1variant.html">variant</a>& v) { <a class="code" href="classboost_1_1gil_1_1variant.html">variant</a> tmp(v ); swap(*<span class="keyword">this</span>,tmp); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
|
|
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div>
|
|
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <a class="code" href="classboost_1_1gil_1_1variant.html">variant</a>(<span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1variant.html">variant</a>& v) : _index(v._index) { apply_operation(v, detail::copy_construct_in_place_fn<base_t>(_bits)); }</div>
|
|
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T> <span class="keywordtype">void</span> move_in(T& obj) { <a class="code" href="classboost_1_1gil_1_1variant.html">variant</a> tmp(obj, <span class="keyword">true</span>); swap(*<span class="keyword">this</span>,tmp); }</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>  <span class="keyword">template</span> <<span class="keyword">typename</span> TS> <span class="keyword">friend</span> <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1variant.html">variant<TS></a>& x, <span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1variant.html">variant<TS></a>& y);</div>
|
|
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> TS> <span class="keyword">friend</span> <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1variant.html">variant<TS></a>& x, <span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1variant.html">variant<TS></a>& y);</div>
|
|
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div>
|
|
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T> <span class="keyword">static</span> <span class="keywordtype">bool</span> has_type() { <span class="keywordflow">return</span> type_id<T>()!=NUM_TYPES; }</div>
|
|
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div>
|
|
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T> <span class="keyword">const</span> T& _dynamic_cast()<span class="keyword"> const </span>{ <span class="keywordflow">if</span> (!current_type_is<T>()) <span class="keywordflow">throw</span> std::bad_cast(); <span class="keywordflow">return</span> *gil_reinterpret_cast_c<const T*>(&_bits); }</div>
|
|
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T> T& _dynamic_cast() { <span class="keywordflow">if</span> (!current_type_is<T>()) <span class="keywordflow">throw</span> std::bad_cast(); <span class="keywordflow">return</span> *gil_reinterpret_cast < T*>(&_bits); }</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>  <span class="keyword">template</span> <<span class="keyword">typename</span> T> <span class="keywordtype">bool</span> current_type_is()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> type_id<T>()==_index; }</div>
|
|
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div>
|
|
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  base_t bits()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _bits; }</div>
|
|
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  std::size_t index()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _index; }</div>
|
|
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div>
|
|
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="keyword">private</span>:</div>
|
|
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T> <span class="keyword">static</span> std::size_t type_id() { <span class="keywordflow">return</span> <a class="code" href="structboost_1_1gil_1_1detail_1_1type__to__index.html">detail::type_to_index<Types,T>::value</a>; }</div>
|
|
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div>
|
|
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Cs> <span class="keyword">friend</span> <span class="keywordtype">void</span> swap(<a class="code" href="classboost_1_1gil_1_1variant.html">variant<Cs></a>& x, <a class="code" href="classboost_1_1gil_1_1variant.html">variant<Cs></a>& y);</div>
|
|
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Types2, <span class="keyword">typename</span> UnaryOp> <span class="keyword">friend</span> <span class="keyword">typename</span> UnaryOp::result_type apply_operation(<a class="code" href="classboost_1_1gil_1_1variant.html">variant<Types2></a>& var, UnaryOp op);</div>
|
|
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Types2, <span class="keyword">typename</span> UnaryOp> <span class="keyword">friend</span> <span class="keyword">typename</span> UnaryOp::result_type apply_operation(<span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1variant.html">variant<Types2></a>& var, UnaryOp op);</div>
|
|
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Types1, <span class="keyword">typename</span> Types2, <span class="keyword">typename</span> BinaryOp> <span class="keyword">friend</span> <span class="keyword">typename</span> BinaryOp::result_type apply_operation(<span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1variant.html">variant<Types1></a>& arg1, <span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1variant.html">variant<Types2></a>& arg2, BinaryOp op);</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>  base_t _bits;</div>
|
|
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  std::size_t _index;</div>
|
|
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> };</div>
|
|
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div>
|
|
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="keyword">namespace </span>detail {</div>
|
|
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div>
|
|
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T, <span class="keyword">typename</span> Bits></div>
|
|
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordtype">void</span> copy_construct_in_place(<span class="keyword">const</span> T& t, Bits& bits) {</div>
|
|
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  T& b=*gil_reinterpret_cast<T*>(&bits);</div>
|
|
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keyword">new</span>(&b)T(t); <span class="comment">// default-construct</span></div>
|
|
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  }</div>
|
|
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div>
|
|
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Bits></div>
|
|
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keyword">struct </span>copy_construct_in_place_fn {</div>
|
|
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keyword">typedef</span> <span class="keywordtype">void</span> result_type;</div>
|
|
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  Bits& _dst;</div>
|
|
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  copy_construct_in_place_fn(Bits& dst) : _dst(dst) {}</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>  <span class="keyword">template</span> <<span class="keyword">typename</span> T> <span class="keywordtype">void</span> operator()(<span class="keyword">const</span> T& src)<span class="keyword"> const </span>{ copy_construct_in_place(src,_dst); }</div>
|
|
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  };</div>
|
|
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> </div>
|
|
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Bits></div>
|
|
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keyword">struct </span>equal_to_fn {</div>
|
|
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keyword">const</span> Bits& _dst;</div>
|
|
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  equal_to_fn(<span class="keyword">const</span> Bits& dst) : _dst(dst) {}</div>
|
|
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> </div>
|
|
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keyword">typedef</span> <span class="keywordtype">bool</span> result_type;</div>
|
|
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T> result_type operator()(<span class="keyword">const</span> T& x)<span class="keyword"> const </span>{</div>
|
|
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">return</span> x==*gil_reinterpret_cast_c<const T*>(&_dst);</div>
|
|
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  }</div>
|
|
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  };</div>
|
|
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> </div>
|
|
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Types></div>
|
|
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keyword">struct </span>type_to_index_fn {</div>
|
|
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keyword">typedef</span> std::size_t 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>  <span class="keyword">template</span> <<span class="keyword">typename</span> T> result_type operator()(<span class="keyword">const</span> T&)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> detail::type_to_index<Types,T>::value; }</div>
|
|
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  };</div>
|
|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> }</div>
|
|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div>
|
|
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="comment">// When doSwap is true, swaps obj with the contents of the variant. obj will contain default-constructed instance after the call</span></div>
|
|
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="keyword">template</span> <<span class="keyword">typename</span> Types></div>
|
|
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T> variant<Types>::variant(T& obj, <span class="keywordtype">bool</span> do_swap) {</div>
|
|
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  _index=type_id<T>();</div>
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">if</span> (_index==NUM_TYPES) <span class="keywordflow">throw</span> std::bad_cast();</div>
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> </div>
|
|
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">if</span> (do_swap) {</div>
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keyword">new</span>(&_bits) T(); <span class="comment">// default construct</span></div>
|
|
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <a class="code" href="group___packed_channel_reference_model.html#gaa0bd7927a859ab0e44df1df898b68e7c">swap</a>(obj, *gil_reinterpret_cast<T*>(&_bits));</div>
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  } <span class="keywordflow">else</span></div>
|
|
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  detail::copy_construct_in_place(const_cast<const T&>(obj), _bits);</div>
|
|
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> }</div>
|
|
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> </div>
|
|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="keyword">template</span> <<span class="keyword">typename</span> Types></div>
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="keywordtype">void</span> <a class="code" href="group___packed_channel_reference_model.html#gaa0bd7927a859ab0e44df1df898b68e7c">swap</a>(variant<Types>& x, variant<Types>& y) {</div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <a class="code" href="group___packed_channel_reference_model.html#gaa0bd7927a859ab0e44df1df898b68e7c">std::swap</a>(x._bits,y._bits);</div>
|
|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <a class="code" href="group___packed_channel_reference_model.html#gaa0bd7927a859ab0e44df1df898b68e7c">std::swap</a>(x._index, y._index);</div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> }</div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> </div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="keyword">template</span> <<span class="keyword">typename</span> Types></div>
|
|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> variant<Types>& x, <span class="keyword">const</span> variant<Types>& y) {</div>
|
|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">return</span> x._index==y._index && <a class="code" href="group___variant.html#ga8ffab42c2958f3a64c262d4db56a8ae1">apply_operation</a>(x,detail::equal_to_fn<<span class="keyword">typename</span> variant<Types>::base_t>(y._bits));</div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> }</div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> </div>
|
|
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="keyword">template</span> <<span class="keyword">typename</span> C></div>
|
|
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> variant<C>& x, <span class="keyword">const</span> variant<C>& y) {</div>
|
|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">return</span> !(x==y);</div>
|
|
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> }</div>
|
|
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> </div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> } } <span class="comment">// namespace boost::gil</span></div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> </div>
|
|
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="preprocessor">#endif</span></div>
|
|
<div class="ttc" id="group___packed_channel_reference_model_html_gaa0bd7927a859ab0e44df1df898b68e7c"><div class="ttname"><a href="group___packed_channel_reference_model.html#gaa0bd7927a859ab0e44df1df898b68e7c">std::swap</a></div><div class="ttdeci">void swap(const boost::gil::packed_channel_reference< BF, FB, NB, M > x, R &y)</div><div class="ttdoc">swap for packed_channel_reference </div><div class="ttdef"><b>Definition:</b> channel.hpp:480</div></div>
|
|
<div class="ttc" id="group___variant_html_ga8ffab42c2958f3a64c262d4db56a8ae1"><div class="ttname"><a href="group___variant.html#ga8ffab42c2958f3a64c262d4db56a8ae1">boost::gil::apply_operation</a></div><div class="ttdeci">BOOST_FORCEINLINE UnaryOp::result_type apply_operation(variant< Types > &arg, UnaryOp op)</div><div class="ttdoc">Invokes a generic mutable operation (represented as a unary function object) on a variant...</div><div class="ttdef"><b>Definition:</b> apply_operation.hpp:31</div></div>
|
|
<div class="ttc" id="classboost_1_1gil_1_1variant_html"><div class="ttname"><a href="classboost_1_1gil_1_1variant.html">boost::gil::variant</a></div><div class="ttdoc">Represents a concrete instance of a run-time specified type from a set of typesA concept is typically...</div><div class="ttdef"><b>Definition:</b> variant.hpp:80</div></div>
|
|
<div class="ttc" id="structboost_1_1gil_1_1detail_1_1type__to__index_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1type__to__index.html">boost::gil::detail::type_to_index</a></div><div class="ttdoc">Returns the index corresponding to the first occurrance of a given given type in. ...</div><div class="ttdef"><b>Definition:</b> utilities.hpp:233</div></div>
|
|
</div><!-- fragment --></div><!-- contents -->
|
|
<!-- HTML footer for doxygen 1.8.13-->
|
|
<!-- start footer part -->
|
|
<hr class="footer"/>
|
|
<address class="footer">
|
|
<small>
|
|
Generated on Wed Oct 24 2018 19:21:36 for Generic Image Library by  <a href="http://www.doxygen.org/index.html">doxygen</a> 1.8.6
|
|
</small>
|
|
</address>
|
|
</body>
|
|
</html>
|