1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Create Components from Attributes (Qi and Karma)</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="../customize.html" title="Customization of Spirit's Attribute Handling"> 9<link rel="prev" href="attribute_as.html" title="Atomically Extract an Attribute Value from a Container (Karma)"> 10<link rel="next" href="auto/create_parser.html" title="Define a Custom Attribute Mapping for a Parser"> 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 align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="attribute_as.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../customize.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="auto/create_parser.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h4 class="title"> 27<a name="spirit.advanced.customize.auto"></a><a class="link" href="auto.html" title="Create Components from Attributes (Qi and Karma)">Create Components from 28 Attributes (Qi and Karma)</a> 29</h4></div></div></div> 30<div class="toc"><dl class="toc"> 31<dt><span class="section"><a href="auto/create_parser.html">Define 32 a Custom Attribute Mapping for a Parser</a></span></dt> 33<dt><span class="section"><a href="auto/create_generator.html">Define 34 a Custom Attribute Mapping for a Generator</a></span></dt> 35</dl></div> 36<p> 37 <a href="http://boost-spirit.com" target="_top">Spirit</a> supports the creation 38 of a default parser or a default generator from a given attribute type. 39 It implements a minimal set of predefined mappings from different attribute 40 types to parsers and generators (for a description of the predefined mappings 41 see <a class="link" href="../../qi/reference/auto.html#spirit.qi.reference.auto.additional_requirements">Additional 42 Attribute Requirements for Parsers</a> and <a class="link" href="../../karma/reference/auto.html#spirit.karma.reference.auto.additional_requirements">Additional 43 Attribute Requirements for Generators</a>). The customization points 44 described in this section (<a class="link" href="auto/create_parser.html" title="Define a Custom Attribute Mapping for a Parser"><code class="computeroutput"><span class="identifier">traits</span><span class="special">::</span><span class="identifier">create_parser</span></code></a> and <a class="link" href="auto/create_generator.html" title="Define a Custom Attribute Mapping for a Generator"><code class="computeroutput"><span class="identifier">traits</span><span class="special">::</span><span class="identifier">create_generator</span></code></a>) can be specialized 45 to define additional mappings for custom data types. 46 </p> 47</div> 48<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 49<td align="left"></td> 50<td align="right"><div class="copyright-footer">Copyright © 2001-2011 Joel de Guzman, Hartmut Kaiser<p> 51 Distributed under the Boost Software License, Version 1.0. (See accompanying 52 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>) 53 </p> 54</div></td> 55</tr></table> 56<hr> 57<div class="spirit-nav"> 58<a accesskey="p" href="attribute_as.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../customize.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="auto/create_parser.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> 59</div> 60</body> 61</html> 62
