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22<div class="spirit-nav"> 23<a accesskey="p" href="BOOST_CONTRACT_MAX_ARGS.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="reference.html#header.boost.contract.core.config_hpp"><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="BOOST_CO_idm46268585536960.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="refentry"> 26<a name="BOOST_CO_idm46268585544864"></a><div class="titlepage"></div> 27<div class="refnamediv"> 28<h2><span class="refentrytitle">Macro BOOST_CONTRACT_BASES_TYPEDEF</span></h2> 29<p>BOOST_CONTRACT_BASES_TYPEDEF — Define the name of the base type <code class="computeroutput">typedef</code> (<code class="computeroutput">base_types</code> by default). </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: <<a class="link" href="reference.html#header.boost.contract.core.config_hpp" title="Header <boost/contract/core/config.hpp>">boost/contract/core/config.hpp</a>> 33 34</span>BOOST_CONTRACT_BASES_TYPEDEF</pre></div> 35<div class="refsect1"> 36<a name="idm45988679745072"></a><h2>Description</h2> 37<p>This macro expands to the name of the <code class="computeroutput">typedef</code> that lists the base classes for subcontracting via <code class="computeroutput"><a class="link" href="BOOST_CONTRACT_BASE_TYPES.html" title="Macro BOOST_CONTRACT_BASE_TYPES">BOOST_CONTRACT_BASE_TYPES</a></code>:</p> 38<pre class="programlisting"><span class="keyword">class</span> <span class="identifier">u</span> 39 <span class="preprocessor">#define</span> <span class="identifier">BASES</span> <span class="keyword">public</span> <span class="identifier">b</span><span class="special">,</span> <span class="keyword">private</span> <span class="identifier">w</span> 40 <span class="special">:</span> <span class="identifier">BASES</span> 41<span class="special">{</span> 42 <span class="keyword">friend</span> <span class="keyword">class</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">contract</span><span class="special">:</span><span class="identifier">access</span><span class="special">;</span> 43 44 <span class="keyword">typedef</span> <span class="identifier">BOOST_CONTRACT_BASE_TYPES</span><span class="special">(</span><span class="identifier">BASES</span><span class="special">)</span> <span class="identifier">BOOST_CONTRACT_TYPEDEF</span><span class="special">;</span> 45 <span class="preprocessor">#undef</span> <span class="identifier">BASES</span> 46 47 <span class="special">...</span> 48<span class="special">}</span><span class="special">;</span> 49</pre> 50<p>When used this way, users can redefine this macro if the <code class="computeroutput">typedef</code> must have a name different from <code class="computeroutput">base_types</code> (because of name clashes in user code, etc.).</p> 51<p><span class="bold"><strong>See Also:</strong></span></p> 52<p> <a class="link" href="boost_contract/tutorial.html#boost_contract.tutorial.base_classes__subcontracting_" title="Base Classes (Subcontracting)"> Base Classes</a> </p> 53<p> 54</p> 55<p> 56</p> 57</div> 58</div> 59<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 60<td align="left"></td> 61<td align="right"><div class="copyright-footer">Copyright © 2008-2019 Lorenzo Caminiti<p> 62 Distributed under the Boost Software License, Version 1.0 (see accompanying 63 file LICENSE_1_0.txt or a copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) 64 </p> 65</div></td> 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