libstdc++
regex_error.h
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1 // class template regex -*- C++ -*-
2 
3 // Copyright (C) 2010-2020 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 _GLIBCXX_BEGIN_NAMESPACE_VERSION
36 
37 /**
38  * @addtogroup regex
39  * @{
40  */
41 
42 namespace regex_constants
43 {
44  /**
45  * @name 5.3 Error Types
46  */
47  ///@{
48 
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 } // namespace regex_constants
124 
125  // [7.8] Class regex_error
126  /**
127  * @brief A regular expression exception class.
128  * @ingroup exceptions
129  *
130  * The regular expression library throws objects of this class on error.
131  */
133  {
135 
136  public:
137  /**
138  * @brief Constructs a regex_error object.
139  *
140  * @param __ecode the regex error code.
141  */
142  explicit
144 
145  virtual ~regex_error() throw();
146 
147  /**
148  * @brief Gets the regex error code.
149  *
150  * @returns the regex error code.
151  */
152  regex_constants::error_type
153  code() const
154  { return _M_code; }
155 
156  private:
157  regex_error(regex_constants::error_type __ecode, const char* __what)
158  : std::runtime_error(__what), _M_code(__ecode)
159  { }
160 
161  friend void __throw_regex_error(regex_constants::error_type, const char*);
162  };
163 
164  ///@} // group regex
165 
166  void
167  __throw_regex_error(regex_constants::error_type __ecode);
168 
169  inline void
170  __throw_regex_error(regex_constants::error_type __ecode, const char* __what)
171  { _GLIBCXX_THROW_OR_ABORT(regex_error(__ecode, __what)); }
172 
173 _GLIBCXX_END_NAMESPACE_VERSION
174 } // namespace std
ISO C++ entities toplevel namespace is std.
constexpr error_type error_space(_S_error_space)
constexpr error_type error_ctype(_S_error_ctype)
constexpr error_type error_brace(_S_error_brace)
constexpr error_type error_badbrace(_S_error_badbrace)
constexpr error_type error_escape(_S_error_escape)
constexpr error_type error_range(_S_error_range)
constexpr error_type error_badrepeat(_S_error_badrepeat)
constexpr error_type error_paren(_S_error_paren)
constexpr error_type error_stack(_S_error_stack)
constexpr error_type error_brack(_S_error_brack)
constexpr error_type error_backref(_S_error_backref)
constexpr error_type error_complexity(_S_error_complexity)
constexpr error_type error_collate(_S_error_collate)
One of two subclasses of exception.
Definition: stdexcept:220
A regular expression exception class.
Definition: regex_error.h:133
regex_constants::error_type code() const
Gets the regex error code.
Definition: regex_error.h:153
regex_error(regex_constants::error_type __ecode)
Constructs a regex_error object.