1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Macro BOOST_CONTRACT_STATIC_INVARIANT</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="Chapter 1. Boost.Contract 1.0.0"> 8<link rel="up" href="reference.html#header.boost.contract_macro_hpp" title="Header <boost/contract_macro.hpp>"> 9<link rel="prev" href="BOOST_CO_idm46268584447792.html" title="Macro BOOST_CONTRACT_INVARIANT_VOLATILE"> 10<link rel="next" href="BOOST_CONTRACT_CONSTRUCTOR.html" title="Macro BOOST_CONTRACT_CONSTRUCTOR"> 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="BOOST_CO_idm46268584447792.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="reference.html#header.boost.contract_macro_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_CONTRACT_CONSTRUCTOR.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="refentry"> 26<a name="BOOST_CO_idm46268584433936"></a><div class="titlepage"></div> 27<div class="refnamediv"> 28<h2><span class="refentrytitle">Macro BOOST_CONTRACT_STATIC_INVARIANT</span></h2> 29<p>BOOST_CONTRACT_STATIC_INVARIANT — Program static class invariants that can be completely disabled at compile-time. </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_macro_hpp" title="Header <boost/contract_macro.hpp>">boost/contract_macro.hpp</a>> 33 34</span>BOOST_CONTRACT_STATIC_INVARIANT(...)</pre></div> 35<div class="refsect1"> 36<a name="idm45988675405584"></a><h2>Description</h2> 37<p><code class="computeroutput">BOOST_CONTRACT_STATIC_INVARIANT</code>({ ... }) expands to code equivalent to the following (note that no code is generated when <code class="computeroutput"><a class="link" href="BOOST_CO_idm46268585434496.html" title="Macro BOOST_CONTRACT_NO_INVARIANTS">BOOST_CONTRACT_NO_INVARIANTS</a></code> is defined):</p> 38<pre class="programlisting"><span class="preprocessor">#ifndef</span> <span class="identifier">BOOST_CONTRACT_NO_INVARIANTS</span> 39 <span class="keyword">static</span> <span class="keyword">void</span> <span class="identifier">BOOST_CONTRACT_STATIC_INVARIANT_FUNC</span><span class="special">(</span><span class="special">)</span> <span class="special">{</span> 40 <span class="special">...</span> 41 <span class="special">}</span> 42<span class="preprocessor">#endif</span> 43</pre> 44<p>Where:</p> 45<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p><span class="bold"><strong>{ ... }</strong></span> is the definition of the function that checks class invariants for static public functions (see <code class="computeroutput"><a class="link" href="BOOST_CONTRACT_INVARIANT.html" title="Macro BOOST_CONTRACT_INVARIANT">BOOST_CONTRACT_INVARIANT</a></code> and <code class="computeroutput"><a class="link" href="BOOST_CO_idm46268584447792.html" title="Macro BOOST_CONTRACT_INVARIANT_VOLATILE">BOOST_CONTRACT_INVARIANT_VOLATILE</a></code>). The curly parenthesis are mandatory. Assertions within this function are usually programmed using <code class="computeroutput"><a class="link" href="BOOST_CONTRACT_ASSERT.html" title="Macro BOOST_CONTRACT_ASSERT">BOOST_CONTRACT_ASSERT</a></code>, but any exception thrown by a call to this function indicates a contract assertion failure (and will result in this library calling either <code class="computeroutput"><a class="link" href="boost/contract/entry_invariant_failure.html" title="Function entry_invariant_failure">boost::contract::entry_invariant_failure</a></code> or <code class="computeroutput"><a class="link" href="boost/contract/exit_invariant_failure.html" title="Function exit_invariant_failure">boost::contract::exit_invariant_failure</a></code>). (This is a variadic macro parameter so it can contain commas not protected by round parenthesis.)</p></li></ul></div> 46<p> 47</p> 48<p><span class="bold"><strong>See Also:</strong></span></p> 49<p> <a class="link" href="boost_contract/extras.html#boost_contract.extras.disable_contract_compilation__macro_interface_" title="Disable Contract Compilation (Macro Interface)"> 50 Disable Contract Compilation</a>, <a class="link" href="boost_contract/tutorial.html#boost_contract.tutorial.class_invariants" title="Class Invariants"> Class Invariants</a> </p> 51<p> 52</p> 53<p> 54</p> 55</div> 56</div> 57<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 58<td align="left"></td> 59<td align="right"><div class="copyright-footer">Copyright © 2008-2019 Lorenzo Caminiti<p> 60 Distributed under the Boost Software License, Version 1.0 (see accompanying 61 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>) 62 </p> 63</div></td> 64</tr></table> 65<hr> 66<div class="spirit-nav"> 67<a accesskey="p" href="BOOST_CO_idm46268584447792.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="reference.html#header.boost.contract_macro_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_CONTRACT_CONSTRUCTOR.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 68</div> 69</body> 70</html> 71
