1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5<title>Macro BOOST_PROTO_ASSERT_MATCHES</title> 6<link rel="stylesheet" href="../../doc/src/boostbook.css" type="text/css"> 7<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 8<link rel="home" href="index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> 9<link rel="up" href="proto/reference.html#header.boost.proto.debug_hpp" title="Header <boost/proto/debug.hpp>"> 10<link rel="prev" href="boost/proto/assert_matches_not.html" title="Function template assert_matches_not"> 11<link rel="next" href="BOOST_PROTO_A_1_3_33_5_5_4.html" title="Macro BOOST_PROTO_ASSERT_MATCHES_NOT"> 12</head> 13<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 14<table cellpadding="2" width="100%"><tr> 15<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../boost.png"></td> 16<td align="center"><a href="../../index.html">Home</a></td> 17<td align="center"><a href="../../libs/libraries.htm">Libraries</a></td> 18<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 19<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 20<td align="center"><a href="../../more/index.htm">More</a></td> 21</tr></table> 22<hr> 23<div class="spirit-nav"> 24<a accesskey="p" href="boost/proto/assert_matches_not.html"><img src="../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="proto/reference.html#header.boost.proto.debug_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_PROTO_A_1_3_33_5_5_4.html"><img src="../../doc/src/images/next.png" alt="Next"></a> 25</div> 26<div class="refentry"> 27<a name="BOOST_PROTO_ASSERT_MATCHES"></a><div class="titlepage"></div> 28<div class="refnamediv"> 29<h2><span class="refentrytitle">Macro BOOST_PROTO_ASSERT_MATCHES</span></h2> 30<p>BOOST_PROTO_ASSERT_MATCHES — 31 Assert at compile time that a particular expression 32 matches the specified grammar. 33 </p> 34</div> 35<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> 36<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="proto/reference.html#header.boost.proto.debug_hpp" title="Header <boost/proto/debug.hpp>">boost/proto/debug.hpp</a>> 37 38</span>BOOST_PROTO_ASSERT_MATCHES(expr, Grammar)</pre></div> 39<div class="refsect1"> 40<a name="id-1.3.33.5.7.9.4"></a><h2>Description</h2> 41<p> 42 Use <code class="computeroutput">BOOST_PROTO_ASSERT_MATCHES()</code> to assert at compile-time that 43 an expression matches a grammar. 44 </p> 45<p> 46 <span class="bold"><strong>Example:</strong></span></p> 47<pre class="programlisting"><span class="keyword">typedef</span> <a class="link" href="boost/proto/plus.html" title="Struct template plus">proto::plus</a><span class="special"><</span> <a class="link" href="boost/proto/terminal.html" title="Struct template terminal">proto::terminal</a><span class="special"><</span> <span class="keyword">int</span> <span class="special">></span><span class="special">,</span> <a class="link" href="boost/proto/terminal.html" title="Struct template terminal">proto::terminal</a><span class="special"><</span> <span class="keyword">int</span> <span class="special">></span> <span class="special">></span> <span class="identifier">PlusInts</span><span class="special">;</span> 48 49<span class="identifier">BOOST_PROTO_ASSERT_MATCHES</span><span class="special">(</span> <a class="link" href="boost/proto/lit.html" title="Function lit">proto::lit</a><span class="special">(</span><span class="number">1</span><span class="special">)</span> <span class="special">+</span> <span class="number">42</span><span class="special">,</span> <span class="identifier">PlusInts</span> <span class="special">)</span><span class="special">;</span></pre> 50<p> 51 </p> 52<p> 53 See also: 54 </p> 55<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "> 56<li class="listitem"><code class="computeroutput"><a class="link" href="boost/proto/assert_matches.html" title="Function template assert_matches">proto::assert_matches</a>()</code></li> 57<li class="listitem"><code class="computeroutput"><a class="link" href="boost/proto/assert_matches_not.html" title="Function template assert_matches_not">proto::assert_matches_not</a>()</code></li> 58<li class="listitem"><code class="computeroutput"><a class="link" href="BOOST_PROTO_A_1_3_33_5_5_4.html" title="Macro BOOST_PROTO_ASSERT_MATCHES_NOT">BOOST_PROTO_ASSERT_MATCHES_NOT</a>()</code></li> 59</ul></div> 60<p> 61 </p> 62</div> 63</div> 64<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 65<td align="left"></td> 66<td align="right"><div class="copyright-footer">Copyright © 2008 Eric Niebler<p> 67 Distributed under the Boost Software License, Version 1.0. (See accompanying 68 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>) 69 </p> 70</div></td> 71</tr></table> 72<hr> 73<div class="spirit-nav"> 74<a accesskey="p" href="boost/proto/assert_matches_not.html"><img src="../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="proto/reference.html#header.boost.proto.debug_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_PROTO_A_1_3_33_5_5_4.html"><img src="../../doc/src/images/next.png" alt="Next"></a> 75</div> 76</body> 77</html> 78
