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Added BOOST_ASSERT_IS_VOID macro

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Ion Gaztañaga
2015-07-10 20:49:53 +02:00
parent f8a27e5e76
commit abf5a45b09
4 changed files with 151 additions and 2 deletions
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assert.html
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@@ -22,6 +22,7 @@
<a href="#BOOST_ASSERT_MSG">BOOST_ASSERT_MSG</a><br />
<a href="#BOOST_VERIFY">BOOST_VERIFY</a><br />
<a href="#BOOST_VERIFY_MSG">BOOST_VERIFY_MSG</a><br />
<a href="#BOOST_ASSERT_IS_VOID">BOOST_ASSERT_IS_VOID</a><br />
</p>
<h2><a name="BOOST_ASSERT">BOOST_ASSERT</a></h2>
@@ -113,8 +114,40 @@
defined, to <code>BOOST_ASSERT_MSG(expr,msg)</code> when it's not.</p>
<hr />
<p>
<h2><a name="BOOST_ASSERT_IS_VOID">BOOST_ASSERT_IS_VOID</a></h2>
<p>The macro <code>BOOST_ASSERT_IS_VOID</code> is defined when <code>BOOST_ASSERT</code> and <code>BOOST_ASSERT_MSG</code>, are expanded to <code>((void)0)</code>.
This macro is useful to avoid compiling and potentially running code that is only intended to prepare data to be used in the assertion.</p>
<blockquote>
<pre>
void MyContainer::erase(iterator i)
{
//Some sanity checks, data must be ordered
#ifndef BOOST_ASSERT_IS_EMPTY
if(i != c.begin()){
iterator prev = i;
--prev;
BOOST_ASSERT(*prev < *i);
}
else if(i != c.end()){
iterator next = i;
++next;
BOOST_ASSERT(*i < *next);
}
#endif
this->erase_impl(i);
}
</pre>
</blockquote>
<p>&bull; By default, <code>BOOST_ASSERT_IS_VOID</code> is defined if <code>NDEBUG</code> is defined.</p>
<p>&bull; If the macro <code>BOOST_DISABLE_ASSERTS</code> is defined <code>BOOST_ASSERT_IS_VOID</code> is always defined.</p>
<p>&bull; If the macro <code>BOOST_ENABLE_ASSERT_HANDLER</code> is defined <code>BOOST_ASSERT_IS_VOID</code> is never defined.</p>
<p>&bull; If the macro <code>BOOST_ENABLE_ASSERT_DEBUG_HANDLER</code>, then <code>BOOST_ASSERT_IS_VOID</code> is defined when <code>NDEBUG</code> is defined.</p>
<hr />
<p>
<small>Copyright © 2002, 2007, 2014 by Peter Dimov.&nbsp; Copyright © 2011
by Beman Dawes. Distributed under the Boost Software
by Beman Dawes.&nbsp; Copyright © 2015 by Ion Gaztanaga. Distributed under the Boost Software
License, Version 1.0. See accompanying file <a href="../../LICENSE_1_0.txt">LICENSE_1_0.txt</a>
or copy at <a href="http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</a>.</small></p>
</body>