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61 lines
2.1 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<title>Boost: throw_exception.hpp documentation</title>
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<h1>throw_exception.hpp</h1>
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<p>
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The header <STRONG><boost/throw_exception.hpp></STRONG> defines the
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helper function <STRONG>boost::throw_exception</STRONG>. It is intended to be
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used in Boost libraries that need to throw exceptions, but support
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configurations and platforms where exceptions aren't available, as indicated by
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the presence of the <STRONG>BOOST_NO_EXCEPTIONS</STRONG> <A href="../config/config.htm#macro_ref">
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configuration macro</A>.
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</p>
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<P>When <STRONG>BOOST_NO_EXCEPTIONS</STRONG> is not defined, <tt>boost::throw_exception(e)</tt>
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is equivalent to <tt>throw e</tt>. Otherwise, the function is left undefined,
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and the user is expected to supply an appropriate definition. Callers of <tt>throw_exception</tt>
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are allowed to assume that the function never returns; therefore, if the
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user-defined <tt>throw_exception</tt> returns, the behavior is undefined.</P>
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<h3><a name="Synopsis">Synopsis</a></h3>
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<pre>
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namespace boost
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{
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#ifdef BOOST_NO_EXCEPTIONS
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void throw_exception(std::exception const & e); // user defined
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#else
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template<class E> void throw_exception(E const & e)
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{
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throw e;
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}
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#endif
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}
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</pre>
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<p><br>
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<small>Copyright © 2002 by Peter Dimov. Permission to copy, use, modify, sell and
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distribute this document is granted provided this copyright notice appears in
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all copies. This document is provided "as is" without express or implied
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warranty, and with no claim as to its suitability for any purpose.</small></p>
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