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  27 <a name="core.no_exceptions_support"></a><a class="link" href="no_exceptions_support.html" title="no_exceptions_support">no_exceptions_support</a>
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  29 <div class="toc"><dl class="toc"><dt><span class="section"><a href="no_exceptions_support.html#core.no_exceptions_support.header_boost_core_no_exceptions_">Header
  30       &lt;boost/core/no_exceptions_support.hpp&gt;</a></span></dt></dl></div>
  31 <div class="simplesect">
  32 <div class="titlepage"><div><div><h3 class="title">
  33 <a name="idm46687074985360"></a>Authors</h3></div></div></div>
  34 <div class="itemizedlist"><ul 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 &lt;boost/core/no_exceptions_support.hpp&gt;">Header
  41       &lt;boost/core/no_exceptions_support.hpp&gt;</a>
  42 </h3></div></div></div>
  43 <p>
  44         The header <code class="computeroutput"><span class="special">&lt;</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">&gt;</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">&amp;)</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">&amp;</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">&amp;)</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">&amp;</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>
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 110         Distributed under the <a href="http://boost.org/LICENSE_1_0.txt" target="_top">Boost
 111         Software License, Version 1.0</a>.
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