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24</div>
25<div class="section">
26<div class="titlepage"><div><div><h3 class="title">
27<a name="boost_regex.ref.error_type"></a><a class="link" href="error_type.html" title="error_type">error_type</a>
28</h3></div></div></div>
29<h5>
30<a name="boost_regex.ref.error_type.h0"></a>
31 <span class="phrase"><a name="boost_regex.ref.error_type.synopsis"></a></span><a class="link" href="error_type.html#boost_regex.ref.error_type.synopsis">Synopsis</a>
32 </h5>
33<p>
34 Type error type represents the different types of errors that can be raised
35 by the library when parsing a regular expression.
36 </p>
37<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>
38
39<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>
40
41<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>
42<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>
43<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>
44<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>
45<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>
46<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>
47<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>
48<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>
49<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>
50<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>
51<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>
52<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>
53<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>
54<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>
55
56<span class="special">}</span> <span class="comment">// namespace regex_constants</span>
57<span class="special">}</span> <span class="comment">// namespace boost</span>
58</pre>
59<h5>
60<a name="boost_regex.ref.error_type.h1"></a>
61 <span class="phrase"><a name="boost_regex.ref.error_type.description"></a></span><a class="link" href="error_type.html#boost_regex.ref.error_type.description">Description</a>
62 </h5>
63<p>
64 The type <code class="computeroutput"><span class="identifier">error_type</span></code> is an
65 implementation-specific enumeration type that may take one of the following
66 values:
67 </p>
68<div class="informaltable"><table class="table">
69<colgroup>
70<col>
71<col>
72</colgroup>
73<thead><tr>
74<th>
75 <p>
76 Constant
77 </p>
78 </th>
79<th>
80 <p>
81 Meaning
82 </p>
83 </th>
84</tr></thead>
85<tbody>
86<tr>
87<td>
88 <p>
89 error_collate
90 </p>
91 </td>
92<td>
93 <p>
94 An invalid collating element was specified in a [[.name.]] block.
95 </p>
96 </td>
97</tr>
98<tr>
99<td>
100 <p>
101 error_ctype
102 </p>
103 </td>
104<td>
105 <p>
106 An invalid character class name was specified in a [[:name:]] block.
107 </p>
108 </td>
109</tr>
110<tr>
111<td>
112 <p>
113 error_escape
114 </p>
115 </td>
116<td>
117 <p>
118 An invalid or trailing escape was encountered.
119 </p>
120 </td>
121</tr>
122<tr>
123<td>
124 <p>
125 error_backref
126 </p>
127 </td>
128<td>
129 <p>
130 A back-reference to a non-existant marked sub-expression was encountered.
131 </p>
132 </td>
133</tr>
134<tr>
135<td>
136 <p>
137 error_brack
138 </p>
139 </td>
140<td>
141 <p>
142 An invalid character set [...] was encountered.
143 </p>
144 </td>
145</tr>
146<tr>
147<td>
148 <p>
149 error_paren
150 </p>
151 </td>
152<td>
153 <p>
154 Mismatched '(' and ')'.
155 </p>
156 </td>
157</tr>
158<tr>
159<td>
160 <p>
161 error_brace
162 </p>
163 </td>
164<td>
165 <p>
166 Mismatched '{' and '}'.
167 </p>
168 </td>
169</tr>
170<tr>
171<td>
172 <p>
173 error_badbrace
174 </p>
175 </td>
176<td>
177 <p>
178 Invalid contents of a {...} block.
179 </p>
180 </td>
181</tr>
182<tr>
183<td>
184 <p>
185 error_range
186 </p>
187 </td>
188<td>
189 <p>
190 A character range was invalid, for example [d-a].
191 </p>
192 </td>
193</tr>
194<tr>
195<td>
196 <p>
197 error_space
198 </p>
199 </td>
200<td>
201 <p>
202 Out of memory.
203 </p>
204 </td>
205</tr>
206<tr>
207<td>
208 <p>
209 error_badrepeat
210 </p>
211 </td>
212<td>
213 <p>
214 An attempt to repeat something that can not be repeated - for example
215 a*+
216 </p>
217 </td>
218</tr>
219<tr>
220<td>
221 <p>
222 error_complexity
223 </p>
224 </td>
225<td>
226 <p>
227 The expression became too complex to handle.
228 </p>
229 </td>
230</tr>
231<tr>
232<td>
233 <p>
234 error_stack
235 </p>
236 </td>
237<td>
238 <p>
239 Out of program stack space.
240 </p>
241 </td>
242</tr>
243<tr>
244<td>
245 <p>
246 error_bad_pattern
247 </p>
248 </td>
249<td>
250 <p>
251 Other unspecified errors.
252 </p>
253 </td>
254</tr>
255</tbody>
256</table></div>
257</div>
258<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
259<td align="left"></td>
260<td align="right"><div class="copyright-footer">Copyright &#169; 1998-2013 John Maddock<p>
261 Distributed under the Boost Software License, Version 1.0. (See accompanying
262 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>)
263 </p>
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