1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>no_exceptions_support</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.Core"> 8<link rel="up" href="../index.html" title="Chapter 1. Boost.Core"> 9<link rel="prev" href="lightweight_test.html" title="lightweight_test"> 10<link rel="next" href="noinit_adaptor.html" title="noinit_adaptor"> 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="lightweight_test.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" 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class="itemizedlist" style="list-style-type: disc; "><li class="listitem"> 35 Pavel Vozenilek 36 </li></ul></div> 37</div> 38<div class="section"> 39<div class="titlepage"><div><div><h3 class="title"> 40<a name="core.no_exceptions_support.header_boost_core_no_exceptions_"></a><a class="link" href="no_exceptions_support.html#core.no_exceptions_support.header_boost_core_no_exceptions_" title="Header <boost/core/no_exceptions_support.hpp>">Header 41 <boost/core/no_exceptions_support.hpp></a> 42</h3></div></div></div> 43<p> 44 The header <code class="computeroutput"><span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">core</span><span class="special">/</span><span class="identifier">no_exceptions_support</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code> 45 defines macros for use in code that needs to be portable to environments 46 that do not have support for C++ exceptions. 47 </p> 48<div class="section"> 49<div class="titlepage"><div><div><h4 class="title"> 50<a name="core.no_exceptions_support.header_boost_core_no_exceptions_.synopsis"></a><a class="link" href="no_exceptions_support.html#core.no_exceptions_support.header_boost_core_no_exceptions_.synopsis" title="Synopsis">Synopsis</a> 51</h4></div></div></div> 52<pre class="programlisting"><span class="preprocessor">#define</span> <span class="identifier">BOOST_TRY</span> <span class="comment">/*unspecified*/</span> 53<span class="preprocessor">#define</span> <span class="identifier">BOOST_CATCH</span><span class="special">(</span><span class="identifier">x</span><span class="special">)</span> <span class="comment">/*unspecified*/</span> 54<span class="preprocessor">#define</span> <span class="identifier">BOOST_CATCH_END</span> <span class="comment">/*unspecified*/</span> 55<span class="preprocessor">#define</span> <span class="identifier">BOOST_RETHROW</span> <span class="comment">/*unspecified*/</span> 56</pre> 57</div> 58<div class="section"> 59<div class="titlepage"><div><div><h4 class="title"> 60<a name="core.no_exceptions_support.header_boost_core_no_exceptions_.example_use"></a><a class="link" href="no_exceptions_support.html#core.no_exceptions_support.header_boost_core_no_exceptions_.example_use" title="Example Use">Example 61 Use</a> 62</h4></div></div></div> 63<pre class="programlisting"><span class="keyword">void</span> <span class="identifier">foo</span><span class="special">()</span> <span class="special">{</span> 64 <span class="identifier">BOOST_TRY</span> <span class="special">{</span> 65 <span class="special">...</span> 66 <span class="special">}</span> <span class="identifier">BOOST_CATCH</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">bad_alloc</span><span class="special">&)</span> <span class="special">{</span> 67 <span class="special">...</span> 68 <span class="identifier">BOOST_RETHROW</span> 69 <span class="special">}</span> <span class="identifier">BOOST_CATCH</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">exception</span><span class="special">&</span> <span class="identifier">e</span><span class="special">)</span> <span class="special">{</span> 70 <span class="special">...</span> 71 <span class="special">}</span> 72 <span class="identifier">BOOST_CATCH_END</span> 73<span class="special">}</span> 74</pre> 75<p> 76 With exception support enabled it will expand into: 77 </p> 78<pre class="programlisting"><span class="keyword">void</span> <span class="identifier">foo</span><span class="special">()</span> <span class="special">{</span> 79 <span class="special">{</span> <span class="keyword">try</span> <span class="special">{</span> 80 <span class="special">...</span> 81 <span class="special">}</span> <span class="keyword">catch</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">bad_alloc</span><span class="special">&)</span> <span class="special">{</span> 82 <span class="special">...</span> 83 <span class="keyword">throw</span><span class="special">;</span> 84 <span class="special">}</span> <span class="keyword">catch</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">exception</span><span class="special">&</span> <span class="identifier">e</span><span class="special">)</span> <span class="special">{</span> 85 <span class="special">...</span> 86 <span class="special">}</span> 87 <span class="special">}</span> 88<span class="special">}</span> 89</pre> 90<p> 91 With exception support disabled it will expand into: 92 </p> 93<pre class="programlisting"><span class="keyword">void</span> <span class="identifier">foo</span><span class="special">()</span> <span class="special">{</span> 94 <span class="special">{</span> <span class="keyword">if</span><span class="special">(</span><span class="keyword">true</span><span class="special">)</span> <span class="special">{</span> 95 <span class="special">...</span> 96 <span class="special">}</span> <span class="keyword">else</span> <span class="keyword">if</span> <span class="special">(</span><span class="keyword">false</span><span class="special">)</span> <span class="special">{</span> 97 <span class="special">...</span> 98 <span class="special">}</span> <span class="keyword">else</span> <span class="keyword">if</span> <span class="special">(</span><span class="keyword">false</span><span class="special">)</span> <span class="special">{</span> 99 <span class="special">...</span> 100 <span class="special">}</span> 101 <span class="special">}</span> 102<span class="special">}</span> 103</pre> 104</div> 105</div> 106</div> 107<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 108<td align="left"></td> 109<td align="right"><div class="copyright-footer">Copyright © 2014 Peter Dimov<br>Copyright © 2014 Glen Fernandes<br>Copyright © 2014 Andrey Semashev<p> 110 Distributed under the <a href="http://boost.org/LICENSE_1_0.txt" target="_top">Boost 111 Software License, Version 1.0</a>. 112 </p> 113</div></td> 114</tr></table> 115<hr> 116<div class="spirit-nav"> 117<a accesskey="p" href="lightweight_test.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../index.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="noinit_adaptor.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 118</div> 119</body> 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