1// class template regex -*- C++ -*-
2
3// Copyright (C) 2010-2014 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
33namespace std _GLIBCXX_VISIBILITY(default)
34{
35/**
36 * @addtogroup regex
37 * @{
38 */
39
40namespace regex_constants
41{
42_GLIBCXX_BEGIN_NAMESPACE_VERSION
43
44  /**
45   * @name 5.3 Error Types
46   */
47  //@{
48
49  enum error_type
50    {
51      _S_error_collate,
52      _S_error_ctype,
53      _S_error_escape,
54      _S_error_backref,
55      _S_error_brack,
56      _S_error_paren,
57      _S_error_brace,
58      _S_error_badbrace,
59      _S_error_range,
60      _S_error_space,
61      _S_error_badrepeat,
62      _S_error_complexity,
63      _S_error_stack,
64    };
65
66  /** The expression contained an invalid collating element name. */
67  constexpr error_type error_collate(_S_error_collate);
68
69  /** The expression contained an invalid character class name. */
70  constexpr error_type error_ctype(_S_error_ctype);
71
72  /**
73   * The expression contained an invalid escaped character, or a trailing
74   * escape.
75   */
76  constexpr error_type error_escape(_S_error_escape);
77
78  /** The expression contained an invalid back reference. */
79  constexpr error_type error_backref(_S_error_backref);
80
81  /** The expression contained mismatched [ and ]. */
82  constexpr error_type error_brack(_S_error_brack);
83
84  /** The expression contained mismatched ( and ). */
85  constexpr error_type error_paren(_S_error_paren);
86
87  /** The expression contained mismatched { and } */
88  constexpr error_type error_brace(_S_error_brace);
89
90  /** The expression contained an invalid range in a {} expression. */
91  constexpr error_type error_badbrace(_S_error_badbrace);
92
93  /**
94   * The expression contained an invalid character range,
95   * such as [b-a] in most encodings.
96   */
97  constexpr error_type error_range(_S_error_range);
98
99  /**
100   * There was insufficient memory to convert the expression into a
101   * finite state machine.
102   */
103  constexpr error_type error_space(_S_error_space);
104
105  /**
106   * One of <em>*?+{</em> was not preceded by a valid regular expression.
107   */
108  constexpr error_type error_badrepeat(_S_error_badrepeat);
109
110  /**
111   * The complexity of an attempted match against a regular expression
112   * exceeded a pre-set level.
113   */
114  constexpr error_type error_complexity(_S_error_complexity);
115
116  /**
117   * There was insufficient memory to determine whether the
118   * regular expression could match the specified character sequence.
119   */
120  constexpr error_type error_stack(_S_error_stack);
121
122  //@}
123_GLIBCXX_END_NAMESPACE_VERSION
124} // namespace regex_constants
125
126_GLIBCXX_BEGIN_NAMESPACE_VERSION
127
128  // [7.8] Class regex_error
129  /**
130   * @brief A regular expression exception class.
131   * @ingroup exceptions
132   *
133   * The regular expression library throws objects of this class on error.
134   */
135  class regex_error : public std::runtime_error
136  {
137    regex_constants::error_type _M_code;
138
139  public:
140    /**
141     * @brief Constructs a regex_error object.
142     *
143     * @param __ecode the regex error code.
144     */
145    explicit
146    regex_error(regex_constants::error_type __ecode);
147
148    virtual ~regex_error() throw();
149
150    /**
151     * @brief Gets the regex error code.
152     *
153     * @returns the regex error code.
154     */
155    regex_constants::error_type
156    code() const
157    { return _M_code; }
158  };
159
160  //@} // group regex
161
162  void
163  __throw_regex_error(regex_constants::error_type __ecode);
164
165_GLIBCXX_END_NAMESPACE_VERSION
166} // namespace std
167