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  25 <div class="refentry">
  26 <a name="boost.proto.transform"></a><div class="titlepage"></div>
  27 <div class="refnamediv">
  28 <h2><span class="refentrytitle">Struct template transform</span></h2>
  29 <p>boost::proto::transform &#8212; Inherit from this to make your type a <a class="link" href="../../PrimitiveTransform.html" title="Concept PrimitiveTransform">PrimitiveTransform</a>.</p>
  30 </div>
  31 <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
  32 <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../proto/reference.html#header.boost.proto.transform.impl_hpp" title="Header &lt;boost/proto/transform/impl.hpp&gt;">boost/proto/transform/impl.hpp</a>&gt;
  33
  34 </span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <a class="link" href="../../PrimitiveTransform.html" title="Concept PrimitiveTransform">PrimitiveTransform</a><span class="special">&gt;</span>
  35 <span class="keyword">struct</span> <a class="link" href="transform.html" title="Struct template transform">transform</a> <span class="special">{</span>
  36   <span class="comment">// types</span>
  37   <span class="keyword">typedef</span> <span class="identifier">PrimitiveTransform</span> <a name="boost.proto.transform.transform_type"></a><span class="identifier">transform_type</span><span class="special">;</span>
  38
  39   <span class="comment">// member classes/structs/unions</span>
  40   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> This<span class="special">,</span> <span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">&gt;</span>
  41   <span class="keyword">struct</span> <a class="link" href="transform/result_This_E_idp207219872.html" title="Struct template result&lt;This(Expr)&gt;">result</a><span class="special">&lt;</span><span class="identifier">This</span><span class="special">(</span><span class="identifier">Expr</span><span class="special">)</span><span class="special">&gt;</span> <span class="special">{</span>
  42     <span class="comment">// types</span>
  43     <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">PrimitiveTransform</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">impl</span><span class="special">&lt;</span> <span class="identifier">Expr</span><span class="special">,</span> <em class="replaceable"><code><span class="identifier">unspecified</span></code></em><span class="special">,</span> <em class="replaceable"><code><span class="identifier">unspecified</span></code></em> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">result_type</span> <a class="link" href="transform/result_This_E_idp207219872.html#boost.proto.transform.result_This(E_idp207219872.type"><span class="identifier">type</span></a><span class="special">;</span>
  44   <span class="special">}</span><span class="special">;</span>
  45   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> This<span class="special">,</span> <span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">,</span> <span class="keyword">typename</span> State<span class="special">&gt;</span>
  46   <span class="keyword">struct</span> <a class="link" href="transform/result_This_E_idp207225152.html" title="Struct template result&lt;This(Expr, State)&gt;">result</a><span class="special">&lt;</span><span class="identifier">This</span><span class="special">(</span><span class="identifier">Expr</span><span class="special">,</span> <span class="identifier">State</span><span class="special">)</span><span class="special">&gt;</span> <span class="special">{</span>
  47     <span class="comment">// types</span>
  48     <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">PrimitiveTransform</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">impl</span><span class="special">&lt;</span> <span class="identifier">Expr</span><span class="special">,</span> <span class="identifier">State</span><span class="special">,</span> <em class="replaceable"><code><span class="identifier">unspecified</span></code></em> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">result_type</span> <a class="link" href="transform/result_This_E_idp207225152.html#boost.proto.transform.result_This(E_idp207225152.type"><span class="identifier">type</span></a><span class="special">;</span>
  49   <span class="special">}</span><span class="special">;</span>
  50   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> This<span class="special">,</span> <span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">,</span> <span class="keyword">typename</span> State<span class="special">,</span> <span class="keyword">typename</span> Data<span class="special">&gt;</span>
  51   <span class="keyword">struct</span> <a class="link" href="transform/result_This_E_idp207230560.html" title="Struct template result&lt;This(Expr, State, Data)&gt;">result</a><span class="special">&lt;</span><span class="identifier">This</span><span class="special">(</span><span class="identifier">Expr</span><span class="special">,</span> <span class="identifier">State</span><span class="special">,</span> <span class="identifier">Data</span><span class="special">)</span><span class="special">&gt;</span> <span class="special">{</span>
  52     <span class="comment">// types</span>
  53     <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">PrimitiveTransform</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">impl</span><span class="special">&lt;</span> <span class="identifier">Expr</span><span class="special">,</span> <span class="identifier">State</span><span class="special">,</span> <span class="identifier">Data</span> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">result_type</span> <a class="link" href="transform/result_This_E_idp207230560.html#boost.proto.transform.result_This(E_idp207230560.type"><span class="identifier">type</span></a><span class="special">;</span>
  54   <span class="special">}</span><span class="special">;</span>
  55
  56   <span class="comment">// <a class="link" href="transform.html#idp207237264-bb">public member functions</a></span>
  57   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">&gt;</span>
  58     <span class="keyword">typename</span> <span class="identifier">PrimitiveTransform</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">impl</span><span class="special">&lt;</span><span class="identifier">Expr</span> <span class="special">&amp;</span><span class="special">,</span> <em class="replaceable"><code><span class="identifier">unspecified</span></code></em><span class="special">,</span> <em class="replaceable"><code><span class="identifier">unspecified</span></code></em><span class="special">&gt;</span><span class="special">::</span><span class="identifier">result_type</span>
  59     <a class="link" href="transform.html#idp207237824-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">Expr</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  60   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">,</span> <span class="keyword">typename</span> State<span class="special">&gt;</span>
  61     <span class="keyword">typename</span> <span class="identifier">PrimitiveTransform</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">impl</span><span class="special">&lt;</span><span class="identifier">Expr</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">State</span> <span class="special">&amp;</span><span class="special">,</span> <em class="replaceable"><code><span class="identifier">unspecified</span></code></em><span class="special">&gt;</span><span class="special">::</span><span class="identifier">result_type</span>
  62     <a class="link" href="transform.html#idp207245104-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">Expr</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">State</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  63   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">,</span> <span class="keyword">typename</span> State<span class="special">&gt;</span>
  64     <span class="keyword">typename</span> <span class="identifier">PrimitiveTransform</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">impl</span><span class="special">&lt;</span><span class="identifier">Expr</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">State</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <em class="replaceable"><code><span class="identifier">unspecified</span></code></em><span class="special">&gt;</span><span class="special">::</span><span class="identifier">result_type</span>
  65     <a class="link" href="transform.html#idp207252800-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">Expr</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">State</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  66   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">,</span> <span class="keyword">typename</span> State<span class="special">,</span> <span class="keyword">typename</span> Data<span class="special">&gt;</span>
  67     <span class="keyword">typename</span> <span class="identifier">PrimitiveTransform</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">impl</span><span class="special">&lt;</span><span class="identifier">Expr</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">State</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">Data</span> <span class="special">&amp;</span><span class="special">&gt;</span><span class="special">::</span><span class="identifier">result_type</span>
  68     <a class="link" href="transform.html#idp207260496-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">Expr</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">State</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">Data</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  69   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">,</span> <span class="keyword">typename</span> State<span class="special">,</span> <span class="keyword">typename</span> Data<span class="special">&gt;</span>
  70     <span class="keyword">typename</span> <span class="identifier">PrimitiveTransform</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">impl</span><span class="special">&lt;</span><span class="identifier">Expr</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">State</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">Data</span> <span class="special">&amp;</span><span class="special">&gt;</span><span class="special">::</span><span class="identifier">result_type</span>
  71     <a class="link" href="transform.html#idp207268640-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">Expr</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">State</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">Data</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  72 <span class="special">}</span><span class="special">;</span></pre></div>
  73 <div class="refsect1">
  74 <a name="idp390110592"></a><h2>Description</h2>
  75 <div class="refsect2">
  76 <a name="idp390111008"></a><h3>
  77 <a name="idp207237264-bb"></a><code class="computeroutput">transform</code> public member functions</h3>
  78 <div class="orderedlist"><ol class="orderedlist" type="1">
  79 <li class="listitem">
  80 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">&gt;</span>
  81   <span class="keyword">typename</span> <span class="identifier">PrimitiveTransform</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">impl</span><span class="special">&lt;</span><span class="identifier">Expr</span> <span class="special">&amp;</span><span class="special">,</span> <em class="replaceable"><code><span class="identifier">unspecified</span></code></em><span class="special">,</span> <em class="replaceable"><code><span class="identifier">unspecified</span></code></em><span class="special">&gt;</span><span class="special">::</span><span class="identifier">result_type</span>
  82   <a name="idp207237824-bb"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">Expr</span> <span class="special">&amp;</span> expr<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
  83 <div class="variablelist"><table border="0" class="variablelist compact">
  84 <colgroup>
  85 <col align="left" valign="top">
  86 <col>
  87 </colgroup>
  88 <tbody><tr>
  89 <td><p><span class="term">Returns:</span></p></td>
  90 <td><code class="computeroutput">
  91                 typename PrimitiveTransform::template impl&lt;Expr &amp;, <em class="replaceable"><code>unspecified</code></em>, <em class="replaceable"><code>unspecified</code></em>&gt;()(expr, <em class="replaceable"><code>unspecified</code></em>, <em class="replaceable"><code>unspecified</code></em>)
  92               </code></td>
  93 </tr></tbody>
  94 </table></div>
  95 </li>
  96 <li class="listitem">
  97 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">,</span> <span class="keyword">typename</span> State<span class="special">&gt;</span>
  98   <span class="keyword">typename</span> <span class="identifier">PrimitiveTransform</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">impl</span><span class="special">&lt;</span><span class="identifier">Expr</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">State</span> <span class="special">&amp;</span><span class="special">,</span> <em class="replaceable"><code><span class="identifier">unspecified</span></code></em><span class="special">&gt;</span><span class="special">::</span><span class="identifier">result_type</span>
  99   <a name="idp207245104-bb"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">Expr</span> <span class="special">&amp;</span> expr<span class="special">,</span> <span class="identifier">State</span> <span class="special">&amp;</span> state<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 100 <div class="variablelist"><table border="0" class="variablelist compact">
 101 <colgroup>
 102 <col align="left" valign="top">
 103 <col>
 104 </colgroup>
 105 <tbody><tr>
 106 <td><p><span class="term">Returns:</span></p></td>
 107 <td><code class="computeroutput">
 108                 typename PrimitiveTransform::template impl&lt;Expr &amp;, State &amp;, <em class="replaceable"><code>unspecified</code></em>&gt;()(expr, state, <em class="replaceable"><code>unspecified</code></em>)
 109               </code></td>
 110 </tr></tbody>
 111 </table></div>
 112 </li>
 113 <li class="listitem">
 114 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">,</span> <span class="keyword">typename</span> State<span class="special">&gt;</span>
 115   <span class="keyword">typename</span> <span class="identifier">PrimitiveTransform</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">impl</span><span class="special">&lt;</span><span class="identifier">Expr</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">State</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <em class="replaceable"><code><span class="identifier">unspecified</span></code></em><span class="special">&gt;</span><span class="special">::</span><span class="identifier">result_type</span>
 116   <a name="idp207252800-bb"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">Expr</span> <span class="special">&amp;</span> expr<span class="special">,</span> <span class="identifier">State</span> <span class="keyword">const</span> <span class="special">&amp;</span> state<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 117 <div class="variablelist"><table border="0" class="variablelist compact">
 118 <colgroup>
 119 <col align="left" valign="top">
 120 <col>
 121 </colgroup>
 122 <tbody><tr>
 123 <td><p><span class="term">Returns:</span></p></td>
 124 <td><code class="computeroutput">
 125                 typename PrimitiveTransform::template impl&lt;Expr &amp;, State const &amp;, <em class="replaceable"><code>unspecified</code></em>&gt;()(expr, state, <em class="replaceable"><code>unspecified</code></em>)
 126               </code></td>
 127 </tr></tbody>
 128 </table></div>
 129 </li>
 130 <li class="listitem">
 131 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">,</span> <span class="keyword">typename</span> State<span class="special">,</span> <span class="keyword">typename</span> Data<span class="special">&gt;</span>
 132   <span class="keyword">typename</span> <span class="identifier">PrimitiveTransform</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">impl</span><span class="special">&lt;</span><span class="identifier">Expr</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">State</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">Data</span> <span class="special">&amp;</span><span class="special">&gt;</span><span class="special">::</span><span class="identifier">result_type</span>
 133   <a name="idp207260496-bb"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">Expr</span> <span class="special">&amp;</span> expr<span class="special">,</span> <span class="identifier">State</span> <span class="special">&amp;</span> state<span class="special">,</span> <span class="identifier">Data</span> <span class="special">&amp;</span> data<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 134 <div class="variablelist"><table border="0" class="variablelist compact">
 135 <colgroup>
 136 <col align="left" valign="top">
 137 <col>
 138 </colgroup>
 139 <tbody><tr>
 140 <td><p><span class="term">Returns:</span></p></td>
 141 <td><code class="computeroutput">
 142                 typename PrimitiveTransform::template impl&lt;Expr &amp;, State &amp;, Data &amp;&gt;()(expr, state, data)
 143               </code></td>
 144 </tr></tbody>
 145 </table></div>
 146 </li>
 147 <li class="listitem">
 148 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">,</span> <span class="keyword">typename</span> State<span class="special">,</span> <span class="keyword">typename</span> Data<span class="special">&gt;</span>
 149   <span class="keyword">typename</span> <span class="identifier">PrimitiveTransform</span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">impl</span><span class="special">&lt;</span><span class="identifier">Expr</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">State</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">Data</span> <span class="special">&amp;</span><span class="special">&gt;</span><span class="special">::</span><span class="identifier">result_type</span>
 150   <a name="idp207268640-bb"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">Expr</span> <span class="special">&amp;</span> expr<span class="special">,</span> <span class="identifier">State</span> <span class="keyword">const</span> <span class="special">&amp;</span> state<span class="special">,</span> <span class="identifier">Data</span> <span class="special">&amp;</span> data<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
 151 <div class="variablelist"><table border="0" class="variablelist compact">
 152 <colgroup>
 153 <col align="left" valign="top">
 154 <col>
 155 </colgroup>
 156 <tbody><tr>
 157 <td><p><span class="term">Returns:</span></p></td>
 158 <td><code class="computeroutput">
 159                 typename PrimitiveTransform::template impl&lt;Expr &amp;, State const &amp;, Data &amp;&gt;()(expr, state, data)
 160               </code></td>
 161 </tr></tbody>
 162 </table></div>
 163 </li>
 164 </ol></div>
 165 </div>
 166 </div>
 167 </div>
 168 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 169 <td align="left"></td>
 170 <td align="right"><div class="copyright-footer">Copyright &#169; 2008 Eric Niebler<p>
 171         Distributed under the Boost Software License, Version 1.0. (See accompanying
 172         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
 173       </p>
 174 </div></td>
 175 </tr></table>
 176 <hr>
 177 <div class="spirit-nav">
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