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<div class="titlepage"><div><div><h3 class="title">
<a name="boost_regex.ref.error_type"></a><a class="link" href="error_type.html" title="error_type"> error_type</a>
</h3></div></div></div>
<a name="boost_regex.ref.error_type.synopsis"></a><h5>
<a name="id1131081"></a>
<a class="link" href="error_type.html#boost_regex.ref.error_type.synopsis">Synopsis</a>
</h5>
<p>
Type error type represents the different types of errors that can be raised
by the library when parsing a regular expression.
</p>
<pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">{</span> <span class="keyword">namespace</span> <span class="identifier">regex_constants</span><span class="special">{</span>
<span class="keyword">typedef</span> <span class="identifier">implementation</span><span class="special">-</span><span class="identifier">specific</span><span class="special">-</span><span class="identifier">type</span> <span class="identifier">error_type</span><span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">error_type</span> <span class="identifier">error_collate</span><span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">error_type</span> <span class="identifier">error_ctype</span><span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">error_type</span> <span class="identifier">error_escape</span><span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">error_type</span> <span class="identifier">error_backref</span><span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">error_type</span> <span class="identifier">error_brack</span><span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">error_type</span> <span class="identifier">error_paren</span><span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">error_type</span> <span class="identifier">error_brace</span><span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">error_type</span> <span class="identifier">error_badbrace</span><span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">error_type</span> <span class="identifier">error_range</span><span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">error_type</span> <span class="identifier">error_space</span><span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">error_type</span> <span class="identifier">error_badrepeat</span><span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">error_type</span> <span class="identifier">error_complexity</span><span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">error_type</span> <span class="identifier">error_stack</span><span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">error_type</span> <span class="identifier">error_bad_pattern</span><span class="special">;</span>
<span class="special">}</span> <span class="comment">// namespace regex_constants
</span><span class="special">}</span> <span class="comment">// namespace boost
</span></pre>
<a name="boost_regex.ref.error_type.description"></a><h5>
<a name="id1131496"></a>
<a class="link" href="error_type.html#boost_regex.ref.error_type.description">Description</a>
</h5>
<p>
The type <code class="computeroutput"><span class="identifier">error_type</span></code> is an
implementation-specific enumeration type that may take one of the following
values:
</p>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Constant
</p>
</th>
<th>
<p>
Meaning
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
error_collate
</p>
</td>
<td>
<p>
An invalid collating element was specified in a [[.name.]] block.
</p>
</td>
</tr>
<tr>
<td>
<p>
error_ctype
</p>
</td>
<td>
<p>
An invalid character class name was specified in a [[:name:]] block.
</p>
</td>
</tr>
<tr>
<td>
<p>
error_escape
</p>
</td>
<td>
<p>
An invalid or trailing escape was encountered.
</p>
</td>
</tr>
<tr>
<td>
<p>
error_backref
</p>
</td>
<td>
<p>
A back-reference to a non-existant marked sub-expression was encountered.
</p>
</td>
</tr>
<tr>
<td>
<p>
error_brack
</p>
</td>
<td>
<p>
An invalid character set [...] was encountered.
</p>
</td>
</tr>
<tr>
<td>
<p>
error_paren
</p>
</td>
<td>
<p>
Mismatched '(' and ')'.
</p>
</td>
</tr>
<tr>
<td>
<p>
error_brace
</p>
</td>
<td>
<p>
Mismatched '{' and '}'.
</p>
</td>
</tr>
<tr>
<td>
<p>
error_badbrace
</p>
</td>
<td>
<p>
Invalid contents of a {...} block.
</p>
</td>
</tr>
<tr>
<td>
<p>
error_range
</p>
</td>
<td>
<p>
A character range was invalid, for example [d-a].
</p>
</td>
</tr>
<tr>
<td>
<p>
error_space
</p>
</td>
<td>
<p>
Out of memory.
</p>
</td>
</tr>
<tr>
<td>
<p>
error_badrepeat
</p>
</td>
<td>
<p>
An attempt to repeat something that can not be repeated - for example
a*+
</p>
</td>
</tr>
<tr>
<td>
<p>
error_complexity
</p>
</td>
<td>
<p>
The expression became too complex to handle.
</p>
</td>
</tr>
<tr>
<td>
<p>
error_stack
</p>
</td>
<td>
<p>
Out of program stack space.
</p>
</td>
</tr>
<tr>
<td>
<p>
error_bad_pattern
</p>
</td>
<td>
<p>
Other unspecified errors.
</p>
</td>
</tr>
</tbody>
</table></div>
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<td align="right"><div class="copyright-footer">Copyright © 1998 -2007 John Maddock<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
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>)
</p>
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