libstdc++
regex_error.h
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1 // class template regex -*- C++ -*-
2 
3 // Copyright (C) 2010, 2011 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
9 // any later version.
10 
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
15 
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
19 
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
24 
25 /**
26  * @file bits/regex_error.h
27  * @brief Error and exception objects for the std regex library.
28  *
29  * This is an internal header file, included by other library headers.
30  * Do not attempt to use it directly. @headername{regex}
31  */
32 
33 namespace std _GLIBCXX_VISIBILITY(default)
34 {
35 namespace regex_constants
36 {
37 _GLIBCXX_BEGIN_NAMESPACE_VERSION
38 
39  /**
40  * @name 5.3 Error Types
41  */
42  //@{
43 
44  enum error_type
45  {
46  _S_error_collate,
47  _S_error_ctype,
48  _S_error_escape,
49  _S_error_backref,
50  _S_error_brack,
51  _S_error_paren,
52  _S_error_brace,
53  _S_error_badbrace,
54  _S_error_range,
55  _S_error_space,
56  _S_error_badrepeat,
57  _S_error_complexity,
58  _S_error_stack,
59  _S_error_last
60  };
61 
62  /** The expression contained an invalid collating element name. */
63  static constexpr error_type error_collate(_S_error_collate);
64 
65  /** The expression contained an invalid character class name. */
66  static constexpr error_type error_ctype(_S_error_ctype);
67 
68  /**
69  * The expression contained an invalid escaped character, or a trailing
70  * escape.
71  */
72  static constexpr error_type error_escape(_S_error_escape);
73 
74  /** The expression contained an invalid back reference. */
75  static constexpr error_type error_backref(_S_error_backref);
76 
77  /** The expression contained mismatched [ and ]. */
78  static constexpr error_type error_brack(_S_error_brack);
79 
80  /** The expression contained mismatched ( and ). */
81  static constexpr error_type error_paren(_S_error_paren);
82 
83  /** The expression contained mismatched { and } */
84  static constexpr error_type error_brace(_S_error_brace);
85 
86  /** The expression contained an invalid range in a {} expression. */
87  static constexpr error_type error_badbrace(_S_error_badbrace);
88 
89  /**
90  * The expression contained an invalid character range,
91  * such as [b-a] in most encodings.
92  */
93  static constexpr error_type error_range(_S_error_range);
94 
95  /**
96  * There was insufficient memory to convert the expression into a
97  * finite state machine.
98  */
99  static constexpr error_type error_space(_S_error_space);
100 
101  /**
102  * One of <em>*?+{</em> was not preceded by a valid regular expression.
103  */
104  static constexpr error_type error_badrepeat(_S_error_badrepeat);
105 
106  /**
107  * The complexity of an attempted match against a regular expression
108  * exceeded a pre-set level.
109  */
110  static constexpr error_type error_complexity(_S_error_complexity);
111 
112  /**
113  * There was insufficient memory to determine whether the
114  * regular expression could match the specified character sequence.
115  */
116  static constexpr error_type error_stack(_S_error_stack);
117 
118  //@}
119 _GLIBCXX_END_NAMESPACE_VERSION
120 } // namespace regex_constants
121 
122 _GLIBCXX_BEGIN_NAMESPACE_VERSION
123 
124  // [7.8] Class regex_error
125  /**
126  * @brief A regular expression exception class.
127  * @ingroup exceptions
128  *
129  * The regular expression library throws objects of this class on error.
130  */
131  class regex_error : public std::runtime_error
132  {
133  regex_constants::error_type _M_code;
134 
135  public:
136  /**
137  * @brief Constructs a regex_error object.
138  *
139  * @param __ecode the regex error code.
140  */
141  explicit
142  regex_error(regex_constants::error_type __ecode);
143 
144  virtual ~regex_error() throw();
145 
146  /**
147  * @brief Gets the regex error code.
148  *
149  * @returns the regex error code.
150  */
151  regex_constants::error_type
152  code() const
153  { return _M_code; }
154  };
155 
156 
157  void
158  __throw_regex_error(regex_constants::error_type __ecode);
159 
160 _GLIBCXX_END_NAMESPACE_VERSION
161 } // namespace std