1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Primitive Lexer Components</title> 5<link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../../index.html" title="Spirit 2.5.8"> 8<link rel="up" href="../quick_reference.html" title="Quick Reference"> 9<link rel="prev" href="common_notation.html" title="Common Notation"> 10<link rel="next" href="semantic_actions.html" title="Semantic Actions"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../../../libs/libraries.htm">Libraries</a></td> 17<td 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29</h4></div></div></div> 30<div class="informaltable"><table class="table"> 31<colgroup> 32<col> 33<col> 34<col> 35</colgroup> 36<thead><tr> 37<th> 38 <p> 39 Expression 40 </p> 41 </th> 42<th> 43 <p> 44 Attribute 45 </p> 46 </th> 47<th> 48 <p> 49 Description 50 </p> 51 </th> 52</tr></thead> 53<tbody> 54<tr> 55<td> 56 <p> 57 <code class="computeroutput"><span class="identifier">ch</span></code> 58 </p> 59 </td> 60<td> 61 <p> 62 n/a 63 </p> 64 </td> 65<td> 66 <p> 67 Matches <code class="computeroutput"><span class="identifier">ch</span></code> 68 </p> 69 </td> 70</tr> 71<tr> 72<td> 73 <p> 74 <code class="computeroutput"><span class="identifier">char_</span><span class="special">(</span><span class="identifier">ch</span><span class="special">)</span></code> 75 </p> 76 </td> 77<td> 78 <p> 79 n/a 80 </p> 81 </td> 82<td> 83 <p> 84 Matches <code class="computeroutput"><span class="identifier">ch</span></code> 85 </p> 86 </td> 87</tr> 88<tr> 89<td> 90 <p> 91 <code class="computeroutput"><span class="identifier">str</span></code> 92 </p> 93 </td> 94<td> 95 <p> 96 n/a 97 </p> 98 </td> 99<td> 100 <p> 101 Matches regular expression <code class="computeroutput"><span class="identifier">str</span></code> 102 </p> 103 </td> 104</tr> 105<tr> 106<td> 107 <p> 108 <code class="computeroutput"><span class="identifier">string</span><span class="special">(</span><span class="identifier">str</span><span class="special">)</span></code> 109 </p> 110 </td> 111<td> 112 <p> 113 n/a 114 </p> 115 </td> 116<td> 117 <p> 118 Matches regular expression <code class="computeroutput"><span class="identifier">str</span></code> 119 </p> 120 </td> 121</tr> 122<tr> 123<td> 124 <p> 125 <code class="computeroutput"><span class="identifier">token_def</span><span class="special"><</span><span class="identifier">Attrib</span><span class="special">></span></code> 126 </p> 127 </td> 128<td> 129 <p> 130 <code class="computeroutput"><span class="identifier">Attrib</span></code> 131 </p> 132 </td> 133<td> 134 <p> 135 Matches the immediate argument 136 </p> 137 </td> 138</tr> 139<tr> 140<td> 141 <p> 142 <code class="computeroutput"><span class="identifier">a</span> <span class="special">|</span> 143 <span class="identifier">b</span></code> 144 </p> 145 </td> 146<td> 147 <p> 148 n/a 149 </p> 150 </td> 151<td> 152 <p> 153 Matches any of the expressions <code class="computeroutput"><span class="identifier">a</span></code> 154 or <code class="computeroutput"><span class="identifier">b</span></code> 155 </p> 156 </td> 157</tr> 158<tr> 159<td> 160 <p> 161 <code class="computeroutput"><span class="identifier">l</span><span class="special">[</span><span class="identifier">fa</span><span class="special">]</span></code> 162 </p> 163 </td> 164<td> 165 <p> 166 Attribute of <code class="computeroutput"><span class="identifier">l</span></code> 167 </p> 168 </td> 169<td> 170 <p> 171 Call semantic action <code class="computeroutput"><span class="identifier">fa</span></code> 172 (after matching <code class="computeroutput"><span class="identifier">l</span></code>). 173 </p> 174 </td> 175</tr> 176</tbody> 177</table></div> 178<div class="note"><table border="0" summary="Note"> 179<tr> 180<td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../images/note.png"></td> 181<th align="left">Note</th> 182</tr> 183<tr><td align="left" valign="top"><p> 184 The column <span class="emphasis"><em>Attribute</em></span> in the table above lists the 185 parser attribute exposed by the lexer component if it is used as a parser 186 (see Attribute). A 'n/a' in this columns means the lexer component is 187 not usable as a parser. 188 </p></td></tr> 189</table></div> 190</div> 191<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 192<td align="left"></td> 193<td align="right"><div class="copyright-footer">Copyright © 2001-2011 Joel de Guzman, Hartmut Kaiser<p> 194 Distributed under the Boost Software License, Version 1.0. (See accompanying 195 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>) 196 </p> 197</div></td> 198</tr></table> 199<hr> 200<div class="spirit-nav"> 201<a accesskey="p" href="common_notation.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../quick_reference.html"><img src="../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="semantic_actions.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> 202</div> 203</body> 204</html> 205
